1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Linux MegaRAID driver for SAS based RAID controllers
4 *
5 * Copyright (c) 2003-2013 LSI Corporation
6 * Copyright (c) 2013-2016 Avago Technologies
7 * Copyright (c) 2016-2018 Broadcom Inc.
8 *
9 * Authors: Broadcom Inc.
10 * Sreenivas Bagalkote
11 * Sumant Patro
12 * Bo Yang
13 * Adam Radford
14 * Kashyap Desai <[email protected]>
15 * Sumit Saxena <[email protected]>
16 *
17 * Send feedback to: [email protected]
18 */
19
20 #include <linux/kernel.h>
21 #include <linux/types.h>
22 #include <linux/pci.h>
23 #include <linux/list.h>
24 #include <linux/moduleparam.h>
25 #include <linux/module.h>
26 #include <linux/spinlock.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29 #include <linux/uio.h>
30 #include <linux/slab.h>
31 #include <linux/uaccess.h>
32 #include <linux/unaligned.h>
33 #include <linux/fs.h>
34 #include <linux/compat.h>
35 #include <linux/blkdev.h>
36 #include <linux/mutex.h>
37 #include <linux/poll.h>
38 #include <linux/vmalloc.h>
39 #include <linux/irq_poll.h>
40
41 #include <scsi/scsi.h>
42 #include <scsi/scsi_cmnd.h>
43 #include <scsi/scsi_device.h>
44 #include <scsi/scsi_host.h>
45 #include <scsi/scsi_tcq.h>
46 #include <scsi/scsi_dbg.h>
47 #include "megaraid_sas_fusion.h"
48 #include "megaraid_sas.h"
49
50 /*
51 * Number of sectors per IO command
52 * Will be set in megasas_init_mfi if user does not provide
53 */
54 static unsigned int max_sectors;
55 module_param_named(max_sectors, max_sectors, int, 0444);
56 MODULE_PARM_DESC(max_sectors,
57 "Maximum number of sectors per IO command");
58
59 static int msix_disable;
60 module_param(msix_disable, int, 0444);
61 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
62
63 static unsigned int msix_vectors;
64 module_param(msix_vectors, int, 0444);
65 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
66
67 static int allow_vf_ioctls;
68 module_param(allow_vf_ioctls, int, 0444);
69 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
70
71 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
72 module_param(throttlequeuedepth, int, 0444);
73 MODULE_PARM_DESC(throttlequeuedepth,
74 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
75
76 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
77 module_param(resetwaittime, int, 0444);
78 MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s");
79
80 static int smp_affinity_enable = 1;
81 module_param(smp_affinity_enable, int, 0444);
82 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)");
83
84 static int rdpq_enable = 1;
85 module_param(rdpq_enable, int, 0444);
86 MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)");
87
88 unsigned int dual_qdepth_disable;
89 module_param(dual_qdepth_disable, int, 0444);
90 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
91
92 static unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
93 module_param(scmd_timeout, int, 0444);
94 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
95
96 int perf_mode = -1;
97 module_param(perf_mode, int, 0444);
98 MODULE_PARM_DESC(perf_mode, "Performance mode (only for Aero adapters), options:\n\t\t"
99 "0 - balanced: High iops and low latency queues are allocated &\n\t\t"
100 "interrupt coalescing is enabled only on high iops queues\n\t\t"
101 "1 - iops: High iops queues are not allocated &\n\t\t"
102 "interrupt coalescing is enabled on all queues\n\t\t"
103 "2 - latency: High iops queues are not allocated &\n\t\t"
104 "interrupt coalescing is disabled on all queues\n\t\t"
105 "default mode is 'balanced'"
106 );
107
108 int event_log_level = MFI_EVT_CLASS_CRITICAL;
109 module_param(event_log_level, int, 0644);
110 MODULE_PARM_DESC(event_log_level, "Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL)");
111
112 unsigned int enable_sdev_max_qd;
113 module_param(enable_sdev_max_qd, int, 0444);
114 MODULE_PARM_DESC(enable_sdev_max_qd, "Enable sdev max qd as can_queue. Default: 0");
115
116 int poll_queues;
117 module_param(poll_queues, int, 0444);
118 MODULE_PARM_DESC(poll_queues, "Number of queues to be use for io_uring poll mode.\n\t\t"
119 "This parameter is effective only if host_tagset_enable=1 &\n\t\t"
120 "It is not applicable for MFI_SERIES. &\n\t\t"
121 "Driver will work in latency mode. &\n\t\t"
122 "High iops queues are not allocated &\n\t\t"
123 );
124
125 int host_tagset_enable = 1;
126 module_param(host_tagset_enable, int, 0444);
127 MODULE_PARM_DESC(host_tagset_enable, "Shared host tagset enable/disable Default: enable(1)");
128
129 MODULE_LICENSE("GPL");
130 MODULE_VERSION(MEGASAS_VERSION);
131 MODULE_AUTHOR("[email protected]");
132 MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver");
133
134 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
135 static int megasas_get_pd_list(struct megasas_instance *instance);
136 static int megasas_ld_list_query(struct megasas_instance *instance,
137 u8 query_type);
138 static int megasas_issue_init_mfi(struct megasas_instance *instance);
139 static int megasas_register_aen(struct megasas_instance *instance,
140 u32 seq_num, u32 class_locale_word);
141 static void megasas_get_pd_info(struct megasas_instance *instance,
142 struct scsi_device *sdev);
143 static void
144 megasas_set_ld_removed_by_fw(struct megasas_instance *instance);
145
146 /*
147 * PCI ID table for all supported controllers
148 */
149 static const struct pci_device_id megasas_pci_table[] = {
150
151 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
152 /* xscale IOP */
153 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
154 /* ppc IOP */
155 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
156 /* ppc IOP */
157 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
158 /* gen2*/
159 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
160 /* gen2*/
161 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
162 /* skinny*/
163 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
164 /* skinny*/
165 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
166 /* xscale IOP, vega */
167 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
168 /* xscale IOP */
169 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
170 /* Fusion */
171 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
172 /* Plasma */
173 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
174 /* Invader */
175 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
176 /* Fury */
177 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
178 /* Intruder */
179 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
180 /* Intruder 24 port*/
181 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
182 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
183 /* VENTURA */
184 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
185 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
186 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
187 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
188 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
189 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
190 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)},
191 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
192 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
193 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
194 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)},
195 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)},
196 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)},
197 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)},
198 {}
199 };
200
201 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
202
203 static int megasas_mgmt_majorno;
204 struct megasas_mgmt_info megasas_mgmt_info;
205 static struct fasync_struct *megasas_async_queue;
206 static DEFINE_MUTEX(megasas_async_queue_mutex);
207
208 static int megasas_poll_wait_aen;
209 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
210 static u32 support_poll_for_event;
211 u32 megasas_dbg_lvl;
212 static u32 support_device_change;
213 static bool support_nvme_encapsulation;
214 static bool support_pci_lane_margining;
215
216 /* define lock for aen poll */
217 static DEFINE_SPINLOCK(poll_aen_lock);
218
219 extern struct dentry *megasas_debugfs_root;
220 extern int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num);
221
222 void
223 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
224 u8 alt_status);
225 static u32
226 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance);
227 static int
228 megasas_adp_reset_gen2(struct megasas_instance *instance,
229 struct megasas_register_set __iomem *reg_set);
230 static irqreturn_t megasas_isr(int irq, void *devp);
231 static u32
232 megasas_init_adapter_mfi(struct megasas_instance *instance);
233 u32
234 megasas_build_and_issue_cmd(struct megasas_instance *instance,
235 struct scsi_cmnd *scmd);
236 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
237 int
238 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
239 int seconds);
240 void megasas_fusion_ocr_wq(struct work_struct *work);
241 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
242 int initial);
243 static int
244 megasas_set_dma_mask(struct megasas_instance *instance);
245 static int
246 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
247 static inline void
248 megasas_free_ctrl_mem(struct megasas_instance *instance);
249 static inline int
250 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
251 static inline void
252 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
253 static inline void
254 megasas_init_ctrl_params(struct megasas_instance *instance);
255
megasas_readl(struct megasas_instance * instance,const volatile void __iomem * addr)256 u32 megasas_readl(struct megasas_instance *instance,
257 const volatile void __iomem *addr)
258 {
259 u32 i = 0, ret_val;
260 /*
261 * Due to a HW errata in Aero controllers, reads to certain
262 * Fusion registers could intermittently return all zeroes.
263 * This behavior is transient in nature and subsequent reads will
264 * return valid value. As a workaround in driver, retry readl for
265 * up to thirty times until a non-zero value is read.
266 */
267 if (instance->adapter_type == AERO_SERIES) {
268 do {
269 ret_val = readl(addr);
270 i++;
271 } while (ret_val == 0 && i < 30);
272 return ret_val;
273 } else {
274 return readl(addr);
275 }
276 }
277
278 /**
279 * megasas_set_dma_settings - Populate DMA address, length and flags for DCMDs
280 * @instance: Adapter soft state
281 * @dcmd: DCMD frame inside MFI command
282 * @dma_addr: DMA address of buffer to be passed to FW
283 * @dma_len: Length of DMA buffer to be passed to FW
284 * @return: void
285 */
megasas_set_dma_settings(struct megasas_instance * instance,struct megasas_dcmd_frame * dcmd,dma_addr_t dma_addr,u32 dma_len)286 void megasas_set_dma_settings(struct megasas_instance *instance,
287 struct megasas_dcmd_frame *dcmd,
288 dma_addr_t dma_addr, u32 dma_len)
289 {
290 if (instance->consistent_mask_64bit) {
291 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
292 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
293 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
294
295 } else {
296 dcmd->sgl.sge32[0].phys_addr =
297 cpu_to_le32(lower_32_bits(dma_addr));
298 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
299 dcmd->flags = cpu_to_le16(dcmd->flags);
300 }
301 }
302
303 static void
megasas_issue_dcmd(struct megasas_instance * instance,struct megasas_cmd * cmd)304 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
305 {
306 instance->instancet->fire_cmd(instance,
307 cmd->frame_phys_addr, 0, instance->reg_set);
308 return;
309 }
310
311 /**
312 * megasas_get_cmd - Get a command from the free pool
313 * @instance: Adapter soft state
314 *
315 * Returns a free command from the pool
316 */
megasas_get_cmd(struct megasas_instance * instance)317 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
318 *instance)
319 {
320 unsigned long flags;
321 struct megasas_cmd *cmd = NULL;
322
323 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
324
325 if (!list_empty(&instance->cmd_pool)) {
326 cmd = list_entry((&instance->cmd_pool)->next,
327 struct megasas_cmd, list);
328 list_del_init(&cmd->list);
329 } else {
330 dev_err(&instance->pdev->dev, "Command pool empty!\n");
331 }
332
333 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
334 return cmd;
335 }
336
337 /**
338 * megasas_return_cmd - Return a cmd to free command pool
339 * @instance: Adapter soft state
340 * @cmd: Command packet to be returned to free command pool
341 */
342 void
megasas_return_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)343 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
344 {
345 unsigned long flags;
346 u32 blk_tags;
347 struct megasas_cmd_fusion *cmd_fusion;
348 struct fusion_context *fusion = instance->ctrl_context;
349
350 /* This flag is used only for fusion adapter.
351 * Wait for Interrupt for Polled mode DCMD
352 */
353 if (cmd->flags & DRV_DCMD_POLLED_MODE)
354 return;
355
356 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
357
358 if (fusion) {
359 blk_tags = instance->max_scsi_cmds + cmd->index;
360 cmd_fusion = fusion->cmd_list[blk_tags];
361 megasas_return_cmd_fusion(instance, cmd_fusion);
362 }
363 cmd->scmd = NULL;
364 cmd->frame_count = 0;
365 cmd->flags = 0;
366 memset(cmd->frame, 0, instance->mfi_frame_size);
367 cmd->frame->io.context = cpu_to_le32(cmd->index);
368 if (!fusion && reset_devices)
369 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
370 list_add(&cmd->list, (&instance->cmd_pool)->next);
371
372 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
373
374 }
375
376 static const char *
format_timestamp(uint32_t timestamp)377 format_timestamp(uint32_t timestamp)
378 {
379 static char buffer[32];
380
381 if ((timestamp & 0xff000000) == 0xff000000)
382 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
383 0x00ffffff);
384 else
385 snprintf(buffer, sizeof(buffer), "%us", timestamp);
386 return buffer;
387 }
388
389 static const char *
format_class(int8_t class)390 format_class(int8_t class)
391 {
392 static char buffer[6];
393
394 switch (class) {
395 case MFI_EVT_CLASS_DEBUG:
396 return "debug";
397 case MFI_EVT_CLASS_PROGRESS:
398 return "progress";
399 case MFI_EVT_CLASS_INFO:
400 return "info";
401 case MFI_EVT_CLASS_WARNING:
402 return "WARN";
403 case MFI_EVT_CLASS_CRITICAL:
404 return "CRIT";
405 case MFI_EVT_CLASS_FATAL:
406 return "FATAL";
407 case MFI_EVT_CLASS_DEAD:
408 return "DEAD";
409 default:
410 snprintf(buffer, sizeof(buffer), "%d", class);
411 return buffer;
412 }
413 }
414
415 /**
416 * megasas_decode_evt: Decode FW AEN event and print critical event
417 * for information.
418 * @instance: Adapter soft state
419 */
420 static void
megasas_decode_evt(struct megasas_instance * instance)421 megasas_decode_evt(struct megasas_instance *instance)
422 {
423 struct megasas_evt_detail *evt_detail = instance->evt_detail;
424 union megasas_evt_class_locale class_locale;
425 class_locale.word = le32_to_cpu(evt_detail->cl.word);
426
427 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
428 (event_log_level > MFI_EVT_CLASS_DEAD)) {
429 printk(KERN_WARNING "megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
430 event_log_level = MFI_EVT_CLASS_CRITICAL;
431 }
432
433 if (class_locale.members.class >= event_log_level)
434 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
435 le32_to_cpu(evt_detail->seq_num),
436 format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
437 (class_locale.members.locale),
438 format_class(class_locale.members.class),
439 evt_detail->description);
440
441 if (megasas_dbg_lvl & LD_PD_DEBUG)
442 dev_info(&instance->pdev->dev,
443 "evt_detail.args.ld.target_id/index %d/%d\n",
444 evt_detail->args.ld.target_id, evt_detail->args.ld.ld_index);
445
446 }
447
448 /*
449 * The following functions are defined for xscale
450 * (deviceid : 1064R, PERC5) controllers
451 */
452
453 /**
454 * megasas_enable_intr_xscale - Enables interrupts
455 * @instance: Adapter soft state
456 */
457 static inline void
megasas_enable_intr_xscale(struct megasas_instance * instance)458 megasas_enable_intr_xscale(struct megasas_instance *instance)
459 {
460 struct megasas_register_set __iomem *regs;
461
462 regs = instance->reg_set;
463 writel(0, &(regs)->outbound_intr_mask);
464
465 /* Dummy readl to force pci flush */
466 readl(®s->outbound_intr_mask);
467 }
468
469 /**
470 * megasas_disable_intr_xscale -Disables interrupt
471 * @instance: Adapter soft state
472 */
473 static inline void
megasas_disable_intr_xscale(struct megasas_instance * instance)474 megasas_disable_intr_xscale(struct megasas_instance *instance)
475 {
476 struct megasas_register_set __iomem *regs;
477 u32 mask = 0x1f;
478
479 regs = instance->reg_set;
480 writel(mask, ®s->outbound_intr_mask);
481 /* Dummy readl to force pci flush */
482 readl(®s->outbound_intr_mask);
483 }
484
485 /**
486 * megasas_read_fw_status_reg_xscale - returns the current FW status value
487 * @instance: Adapter soft state
488 */
489 static u32
megasas_read_fw_status_reg_xscale(struct megasas_instance * instance)490 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)
491 {
492 return readl(&instance->reg_set->outbound_msg_0);
493 }
494 /**
495 * megasas_clear_intr_xscale - Check & clear interrupt
496 * @instance: Adapter soft state
497 */
498 static int
megasas_clear_intr_xscale(struct megasas_instance * instance)499 megasas_clear_intr_xscale(struct megasas_instance *instance)
500 {
501 u32 status;
502 u32 mfiStatus = 0;
503 struct megasas_register_set __iomem *regs;
504 regs = instance->reg_set;
505
506 /*
507 * Check if it is our interrupt
508 */
509 status = readl(®s->outbound_intr_status);
510
511 if (status & MFI_OB_INTR_STATUS_MASK)
512 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
513 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
514 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
515
516 /*
517 * Clear the interrupt by writing back the same value
518 */
519 if (mfiStatus)
520 writel(status, ®s->outbound_intr_status);
521
522 /* Dummy readl to force pci flush */
523 readl(®s->outbound_intr_status);
524
525 return mfiStatus;
526 }
527
528 /**
529 * megasas_fire_cmd_xscale - Sends command to the FW
530 * @instance: Adapter soft state
531 * @frame_phys_addr : Physical address of cmd
532 * @frame_count : Number of frames for the command
533 * @regs : MFI register set
534 */
535 static inline void
megasas_fire_cmd_xscale(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)536 megasas_fire_cmd_xscale(struct megasas_instance *instance,
537 dma_addr_t frame_phys_addr,
538 u32 frame_count,
539 struct megasas_register_set __iomem *regs)
540 {
541 unsigned long flags;
542
543 spin_lock_irqsave(&instance->hba_lock, flags);
544 writel((frame_phys_addr >> 3)|(frame_count),
545 &(regs)->inbound_queue_port);
546 spin_unlock_irqrestore(&instance->hba_lock, flags);
547 }
548
549 /**
550 * megasas_adp_reset_xscale - For controller reset
551 * @instance: Adapter soft state
552 * @regs: MFI register set
553 */
554 static int
megasas_adp_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)555 megasas_adp_reset_xscale(struct megasas_instance *instance,
556 struct megasas_register_set __iomem *regs)
557 {
558 u32 i;
559 u32 pcidata;
560
561 writel(MFI_ADP_RESET, ®s->inbound_doorbell);
562
563 for (i = 0; i < 3; i++)
564 msleep(1000); /* sleep for 3 secs */
565 pcidata = 0;
566 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
567 dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
568 if (pcidata & 0x2) {
569 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
570 pcidata &= ~0x2;
571 pci_write_config_dword(instance->pdev,
572 MFI_1068_PCSR_OFFSET, pcidata);
573
574 for (i = 0; i < 2; i++)
575 msleep(1000); /* need to wait 2 secs again */
576
577 pcidata = 0;
578 pci_read_config_dword(instance->pdev,
579 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
580 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
581 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
582 dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
583 pcidata = 0;
584 pci_write_config_dword(instance->pdev,
585 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
586 }
587 }
588 return 0;
589 }
590
591 /**
592 * megasas_check_reset_xscale - For controller reset check
593 * @instance: Adapter soft state
594 * @regs: MFI register set
595 */
596 static int
megasas_check_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)597 megasas_check_reset_xscale(struct megasas_instance *instance,
598 struct megasas_register_set __iomem *regs)
599 {
600 if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
601 (le32_to_cpu(*instance->consumer) ==
602 MEGASAS_ADPRESET_INPROG_SIGN))
603 return 1;
604 return 0;
605 }
606
607 static struct megasas_instance_template megasas_instance_template_xscale = {
608
609 .fire_cmd = megasas_fire_cmd_xscale,
610 .enable_intr = megasas_enable_intr_xscale,
611 .disable_intr = megasas_disable_intr_xscale,
612 .clear_intr = megasas_clear_intr_xscale,
613 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
614 .adp_reset = megasas_adp_reset_xscale,
615 .check_reset = megasas_check_reset_xscale,
616 .service_isr = megasas_isr,
617 .tasklet = megasas_complete_cmd_dpc,
618 .init_adapter = megasas_init_adapter_mfi,
619 .build_and_issue_cmd = megasas_build_and_issue_cmd,
620 .issue_dcmd = megasas_issue_dcmd,
621 };
622
623 /*
624 * This is the end of set of functions & definitions specific
625 * to xscale (deviceid : 1064R, PERC5) controllers
626 */
627
628 /*
629 * The following functions are defined for ppc (deviceid : 0x60)
630 * controllers
631 */
632
633 /**
634 * megasas_enable_intr_ppc - Enables interrupts
635 * @instance: Adapter soft state
636 */
637 static inline void
megasas_enable_intr_ppc(struct megasas_instance * instance)638 megasas_enable_intr_ppc(struct megasas_instance *instance)
639 {
640 struct megasas_register_set __iomem *regs;
641
642 regs = instance->reg_set;
643 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
644
645 writel(~0x80000000, &(regs)->outbound_intr_mask);
646
647 /* Dummy readl to force pci flush */
648 readl(®s->outbound_intr_mask);
649 }
650
651 /**
652 * megasas_disable_intr_ppc - Disable interrupt
653 * @instance: Adapter soft state
654 */
655 static inline void
megasas_disable_intr_ppc(struct megasas_instance * instance)656 megasas_disable_intr_ppc(struct megasas_instance *instance)
657 {
658 struct megasas_register_set __iomem *regs;
659 u32 mask = 0xFFFFFFFF;
660
661 regs = instance->reg_set;
662 writel(mask, ®s->outbound_intr_mask);
663 /* Dummy readl to force pci flush */
664 readl(®s->outbound_intr_mask);
665 }
666
667 /**
668 * megasas_read_fw_status_reg_ppc - returns the current FW status value
669 * @instance: Adapter soft state
670 */
671 static u32
megasas_read_fw_status_reg_ppc(struct megasas_instance * instance)672 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)
673 {
674 return readl(&instance->reg_set->outbound_scratch_pad_0);
675 }
676
677 /**
678 * megasas_clear_intr_ppc - Check & clear interrupt
679 * @instance: Adapter soft state
680 */
681 static int
megasas_clear_intr_ppc(struct megasas_instance * instance)682 megasas_clear_intr_ppc(struct megasas_instance *instance)
683 {
684 u32 status, mfiStatus = 0;
685 struct megasas_register_set __iomem *regs;
686 regs = instance->reg_set;
687
688 /*
689 * Check if it is our interrupt
690 */
691 status = readl(®s->outbound_intr_status);
692
693 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
694 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
695
696 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
697 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
698
699 /*
700 * Clear the interrupt by writing back the same value
701 */
702 writel(status, ®s->outbound_doorbell_clear);
703
704 /* Dummy readl to force pci flush */
705 readl(®s->outbound_doorbell_clear);
706
707 return mfiStatus;
708 }
709
710 /**
711 * megasas_fire_cmd_ppc - Sends command to the FW
712 * @instance: Adapter soft state
713 * @frame_phys_addr: Physical address of cmd
714 * @frame_count: Number of frames for the command
715 * @regs: MFI register set
716 */
717 static inline void
megasas_fire_cmd_ppc(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)718 megasas_fire_cmd_ppc(struct megasas_instance *instance,
719 dma_addr_t frame_phys_addr,
720 u32 frame_count,
721 struct megasas_register_set __iomem *regs)
722 {
723 unsigned long flags;
724
725 spin_lock_irqsave(&instance->hba_lock, flags);
726 writel((frame_phys_addr | (frame_count<<1))|1,
727 &(regs)->inbound_queue_port);
728 spin_unlock_irqrestore(&instance->hba_lock, flags);
729 }
730
731 /**
732 * megasas_check_reset_ppc - For controller reset check
733 * @instance: Adapter soft state
734 * @regs: MFI register set
735 */
736 static int
megasas_check_reset_ppc(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)737 megasas_check_reset_ppc(struct megasas_instance *instance,
738 struct megasas_register_set __iomem *regs)
739 {
740 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
741 return 1;
742
743 return 0;
744 }
745
746 static struct megasas_instance_template megasas_instance_template_ppc = {
747
748 .fire_cmd = megasas_fire_cmd_ppc,
749 .enable_intr = megasas_enable_intr_ppc,
750 .disable_intr = megasas_disable_intr_ppc,
751 .clear_intr = megasas_clear_intr_ppc,
752 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
753 .adp_reset = megasas_adp_reset_xscale,
754 .check_reset = megasas_check_reset_ppc,
755 .service_isr = megasas_isr,
756 .tasklet = megasas_complete_cmd_dpc,
757 .init_adapter = megasas_init_adapter_mfi,
758 .build_and_issue_cmd = megasas_build_and_issue_cmd,
759 .issue_dcmd = megasas_issue_dcmd,
760 };
761
762 /**
763 * megasas_enable_intr_skinny - Enables interrupts
764 * @instance: Adapter soft state
765 */
766 static inline void
megasas_enable_intr_skinny(struct megasas_instance * instance)767 megasas_enable_intr_skinny(struct megasas_instance *instance)
768 {
769 struct megasas_register_set __iomem *regs;
770
771 regs = instance->reg_set;
772 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
773
774 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
775
776 /* Dummy readl to force pci flush */
777 readl(®s->outbound_intr_mask);
778 }
779
780 /**
781 * megasas_disable_intr_skinny - Disables interrupt
782 * @instance: Adapter soft state
783 */
784 static inline void
megasas_disable_intr_skinny(struct megasas_instance * instance)785 megasas_disable_intr_skinny(struct megasas_instance *instance)
786 {
787 struct megasas_register_set __iomem *regs;
788 u32 mask = 0xFFFFFFFF;
789
790 regs = instance->reg_set;
791 writel(mask, ®s->outbound_intr_mask);
792 /* Dummy readl to force pci flush */
793 readl(®s->outbound_intr_mask);
794 }
795
796 /**
797 * megasas_read_fw_status_reg_skinny - returns the current FW status value
798 * @instance: Adapter soft state
799 */
800 static u32
megasas_read_fw_status_reg_skinny(struct megasas_instance * instance)801 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)
802 {
803 return readl(&instance->reg_set->outbound_scratch_pad_0);
804 }
805
806 /**
807 * megasas_clear_intr_skinny - Check & clear interrupt
808 * @instance: Adapter soft state
809 */
810 static int
megasas_clear_intr_skinny(struct megasas_instance * instance)811 megasas_clear_intr_skinny(struct megasas_instance *instance)
812 {
813 u32 status;
814 u32 mfiStatus = 0;
815 struct megasas_register_set __iomem *regs;
816 regs = instance->reg_set;
817
818 /*
819 * Check if it is our interrupt
820 */
821 status = readl(®s->outbound_intr_status);
822
823 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
824 return 0;
825 }
826
827 /*
828 * Check if it is our interrupt
829 */
830 if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) ==
831 MFI_STATE_FAULT) {
832 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
833 } else
834 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
835
836 /*
837 * Clear the interrupt by writing back the same value
838 */
839 writel(status, ®s->outbound_intr_status);
840
841 /*
842 * dummy read to flush PCI
843 */
844 readl(®s->outbound_intr_status);
845
846 return mfiStatus;
847 }
848
849 /**
850 * megasas_fire_cmd_skinny - Sends command to the FW
851 * @instance: Adapter soft state
852 * @frame_phys_addr: Physical address of cmd
853 * @frame_count: Number of frames for the command
854 * @regs: MFI register set
855 */
856 static inline void
megasas_fire_cmd_skinny(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)857 megasas_fire_cmd_skinny(struct megasas_instance *instance,
858 dma_addr_t frame_phys_addr,
859 u32 frame_count,
860 struct megasas_register_set __iomem *regs)
861 {
862 unsigned long flags;
863
864 spin_lock_irqsave(&instance->hba_lock, flags);
865 writel(upper_32_bits(frame_phys_addr),
866 &(regs)->inbound_high_queue_port);
867 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
868 &(regs)->inbound_low_queue_port);
869 spin_unlock_irqrestore(&instance->hba_lock, flags);
870 }
871
872 /**
873 * megasas_check_reset_skinny - For controller reset check
874 * @instance: Adapter soft state
875 * @regs: MFI register set
876 */
877 static int
megasas_check_reset_skinny(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)878 megasas_check_reset_skinny(struct megasas_instance *instance,
879 struct megasas_register_set __iomem *regs)
880 {
881 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
882 return 1;
883
884 return 0;
885 }
886
887 static struct megasas_instance_template megasas_instance_template_skinny = {
888
889 .fire_cmd = megasas_fire_cmd_skinny,
890 .enable_intr = megasas_enable_intr_skinny,
891 .disable_intr = megasas_disable_intr_skinny,
892 .clear_intr = megasas_clear_intr_skinny,
893 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
894 .adp_reset = megasas_adp_reset_gen2,
895 .check_reset = megasas_check_reset_skinny,
896 .service_isr = megasas_isr,
897 .tasklet = megasas_complete_cmd_dpc,
898 .init_adapter = megasas_init_adapter_mfi,
899 .build_and_issue_cmd = megasas_build_and_issue_cmd,
900 .issue_dcmd = megasas_issue_dcmd,
901 };
902
903
904 /*
905 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
906 * controllers
907 */
908
909 /**
910 * megasas_enable_intr_gen2 - Enables interrupts
911 * @instance: Adapter soft state
912 */
913 static inline void
megasas_enable_intr_gen2(struct megasas_instance * instance)914 megasas_enable_intr_gen2(struct megasas_instance *instance)
915 {
916 struct megasas_register_set __iomem *regs;
917
918 regs = instance->reg_set;
919 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
920
921 /* write ~0x00000005 (4 & 1) to the intr mask*/
922 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
923
924 /* Dummy readl to force pci flush */
925 readl(®s->outbound_intr_mask);
926 }
927
928 /**
929 * megasas_disable_intr_gen2 - Disables interrupt
930 * @instance: Adapter soft state
931 */
932 static inline void
megasas_disable_intr_gen2(struct megasas_instance * instance)933 megasas_disable_intr_gen2(struct megasas_instance *instance)
934 {
935 struct megasas_register_set __iomem *regs;
936 u32 mask = 0xFFFFFFFF;
937
938 regs = instance->reg_set;
939 writel(mask, ®s->outbound_intr_mask);
940 /* Dummy readl to force pci flush */
941 readl(®s->outbound_intr_mask);
942 }
943
944 /**
945 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
946 * @instance: Adapter soft state
947 */
948 static u32
megasas_read_fw_status_reg_gen2(struct megasas_instance * instance)949 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)
950 {
951 return readl(&instance->reg_set->outbound_scratch_pad_0);
952 }
953
954 /**
955 * megasas_clear_intr_gen2 - Check & clear interrupt
956 * @instance: Adapter soft state
957 */
958 static int
megasas_clear_intr_gen2(struct megasas_instance * instance)959 megasas_clear_intr_gen2(struct megasas_instance *instance)
960 {
961 u32 status;
962 u32 mfiStatus = 0;
963 struct megasas_register_set __iomem *regs;
964 regs = instance->reg_set;
965
966 /*
967 * Check if it is our interrupt
968 */
969 status = readl(®s->outbound_intr_status);
970
971 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
972 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
973 }
974 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
975 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
976 }
977
978 /*
979 * Clear the interrupt by writing back the same value
980 */
981 if (mfiStatus)
982 writel(status, ®s->outbound_doorbell_clear);
983
984 /* Dummy readl to force pci flush */
985 readl(®s->outbound_intr_status);
986
987 return mfiStatus;
988 }
989
990 /**
991 * megasas_fire_cmd_gen2 - Sends command to the FW
992 * @instance: Adapter soft state
993 * @frame_phys_addr: Physical address of cmd
994 * @frame_count: Number of frames for the command
995 * @regs: MFI register set
996 */
997 static inline void
megasas_fire_cmd_gen2(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)998 megasas_fire_cmd_gen2(struct megasas_instance *instance,
999 dma_addr_t frame_phys_addr,
1000 u32 frame_count,
1001 struct megasas_register_set __iomem *regs)
1002 {
1003 unsigned long flags;
1004
1005 spin_lock_irqsave(&instance->hba_lock, flags);
1006 writel((frame_phys_addr | (frame_count<<1))|1,
1007 &(regs)->inbound_queue_port);
1008 spin_unlock_irqrestore(&instance->hba_lock, flags);
1009 }
1010
1011 /**
1012 * megasas_adp_reset_gen2 - For controller reset
1013 * @instance: Adapter soft state
1014 * @reg_set: MFI register set
1015 */
1016 static int
megasas_adp_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * reg_set)1017 megasas_adp_reset_gen2(struct megasas_instance *instance,
1018 struct megasas_register_set __iomem *reg_set)
1019 {
1020 u32 retry = 0 ;
1021 u32 HostDiag;
1022 u32 __iomem *seq_offset = ®_set->seq_offset;
1023 u32 __iomem *hostdiag_offset = ®_set->host_diag;
1024
1025 if (instance->instancet == &megasas_instance_template_skinny) {
1026 seq_offset = ®_set->fusion_seq_offset;
1027 hostdiag_offset = ®_set->fusion_host_diag;
1028 }
1029
1030 writel(0, seq_offset);
1031 writel(4, seq_offset);
1032 writel(0xb, seq_offset);
1033 writel(2, seq_offset);
1034 writel(7, seq_offset);
1035 writel(0xd, seq_offset);
1036
1037 msleep(1000);
1038
1039 HostDiag = (u32)readl(hostdiag_offset);
1040
1041 while (!(HostDiag & DIAG_WRITE_ENABLE)) {
1042 msleep(100);
1043 HostDiag = (u32)readl(hostdiag_offset);
1044 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
1045 retry, HostDiag);
1046
1047 if (retry++ >= 100)
1048 return 1;
1049
1050 }
1051
1052 dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
1053
1054 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
1055
1056 ssleep(10);
1057
1058 HostDiag = (u32)readl(hostdiag_offset);
1059 while (HostDiag & DIAG_RESET_ADAPTER) {
1060 msleep(100);
1061 HostDiag = (u32)readl(hostdiag_offset);
1062 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
1063 retry, HostDiag);
1064
1065 if (retry++ >= 1000)
1066 return 1;
1067
1068 }
1069 return 0;
1070 }
1071
1072 /**
1073 * megasas_check_reset_gen2 - For controller reset check
1074 * @instance: Adapter soft state
1075 * @regs: MFI register set
1076 */
1077 static int
megasas_check_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)1078 megasas_check_reset_gen2(struct megasas_instance *instance,
1079 struct megasas_register_set __iomem *regs)
1080 {
1081 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1082 return 1;
1083
1084 return 0;
1085 }
1086
1087 static struct megasas_instance_template megasas_instance_template_gen2 = {
1088
1089 .fire_cmd = megasas_fire_cmd_gen2,
1090 .enable_intr = megasas_enable_intr_gen2,
1091 .disable_intr = megasas_disable_intr_gen2,
1092 .clear_intr = megasas_clear_intr_gen2,
1093 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1094 .adp_reset = megasas_adp_reset_gen2,
1095 .check_reset = megasas_check_reset_gen2,
1096 .service_isr = megasas_isr,
1097 .tasklet = megasas_complete_cmd_dpc,
1098 .init_adapter = megasas_init_adapter_mfi,
1099 .build_and_issue_cmd = megasas_build_and_issue_cmd,
1100 .issue_dcmd = megasas_issue_dcmd,
1101 };
1102
1103 /*
1104 * This is the end of set of functions & definitions
1105 * specific to gen2 (deviceid : 0x78, 0x79) controllers
1106 */
1107
1108 /*
1109 * Template added for TB (Fusion)
1110 */
1111 extern struct megasas_instance_template megasas_instance_template_fusion;
1112
1113 /**
1114 * megasas_issue_polled - Issues a polling command
1115 * @instance: Adapter soft state
1116 * @cmd: Command packet to be issued
1117 *
1118 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1119 */
1120 int
megasas_issue_polled(struct megasas_instance * instance,struct megasas_cmd * cmd)1121 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1122 {
1123 struct megasas_header *frame_hdr = &cmd->frame->hdr;
1124
1125 frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1126 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1127
1128 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1129 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1130 __func__, __LINE__);
1131 return DCMD_INIT;
1132 }
1133
1134 instance->instancet->issue_dcmd(instance, cmd);
1135
1136 return wait_and_poll(instance, cmd, instance->requestorId ?
1137 MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1138 }
1139
1140 /**
1141 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
1142 * @instance: Adapter soft state
1143 * @cmd: Command to be issued
1144 * @timeout: Timeout in seconds
1145 *
1146 * This function waits on an event for the command to be returned from ISR.
1147 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1148 * Used to issue ioctl commands.
1149 */
1150 int
megasas_issue_blocked_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,int timeout)1151 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1152 struct megasas_cmd *cmd, int timeout)
1153 {
1154 int ret = 0;
1155 cmd->cmd_status_drv = DCMD_INIT;
1156
1157 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1158 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1159 __func__, __LINE__);
1160 return DCMD_INIT;
1161 }
1162
1163 instance->instancet->issue_dcmd(instance, cmd);
1164
1165 if (timeout) {
1166 ret = wait_event_timeout(instance->int_cmd_wait_q,
1167 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1168 if (!ret) {
1169 dev_err(&instance->pdev->dev,
1170 "DCMD(opcode: 0x%x) is timed out, func:%s\n",
1171 cmd->frame->dcmd.opcode, __func__);
1172 return DCMD_TIMEOUT;
1173 }
1174 } else
1175 wait_event(instance->int_cmd_wait_q,
1176 cmd->cmd_status_drv != DCMD_INIT);
1177
1178 return cmd->cmd_status_drv;
1179 }
1180
1181 /**
1182 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
1183 * @instance: Adapter soft state
1184 * @cmd_to_abort: Previously issued cmd to be aborted
1185 * @timeout: Timeout in seconds
1186 *
1187 * MFI firmware can abort previously issued AEN comamnd (automatic event
1188 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1189 * cmd and waits for return status.
1190 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1191 */
1192 static int
megasas_issue_blocked_abort_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd_to_abort,int timeout)1193 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1194 struct megasas_cmd *cmd_to_abort, int timeout)
1195 {
1196 struct megasas_cmd *cmd;
1197 struct megasas_abort_frame *abort_fr;
1198 int ret = 0;
1199 u32 opcode;
1200
1201 cmd = megasas_get_cmd(instance);
1202
1203 if (!cmd)
1204 return -1;
1205
1206 abort_fr = &cmd->frame->abort;
1207
1208 /*
1209 * Prepare and issue the abort frame
1210 */
1211 abort_fr->cmd = MFI_CMD_ABORT;
1212 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1213 abort_fr->flags = cpu_to_le16(0);
1214 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1215 abort_fr->abort_mfi_phys_addr_lo =
1216 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1217 abort_fr->abort_mfi_phys_addr_hi =
1218 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1219
1220 cmd->sync_cmd = 1;
1221 cmd->cmd_status_drv = DCMD_INIT;
1222
1223 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1224 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1225 __func__, __LINE__);
1226 return DCMD_INIT;
1227 }
1228
1229 instance->instancet->issue_dcmd(instance, cmd);
1230
1231 if (timeout) {
1232 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1233 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1234 if (!ret) {
1235 opcode = cmd_to_abort->frame->dcmd.opcode;
1236 dev_err(&instance->pdev->dev,
1237 "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n",
1238 opcode, __func__);
1239 return DCMD_TIMEOUT;
1240 }
1241 } else
1242 wait_event(instance->abort_cmd_wait_q,
1243 cmd->cmd_status_drv != DCMD_INIT);
1244
1245 cmd->sync_cmd = 0;
1246
1247 megasas_return_cmd(instance, cmd);
1248 return cmd->cmd_status_drv;
1249 }
1250
1251 /**
1252 * megasas_make_sgl32 - Prepares 32-bit SGL
1253 * @instance: Adapter soft state
1254 * @scp: SCSI command from the mid-layer
1255 * @mfi_sgl: SGL to be filled in
1256 *
1257 * If successful, this function returns the number of SG elements. Otherwise,
1258 * it returnes -1.
1259 */
1260 static int
megasas_make_sgl32(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1261 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1262 union megasas_sgl *mfi_sgl)
1263 {
1264 int i;
1265 int sge_count;
1266 struct scatterlist *os_sgl;
1267
1268 sge_count = scsi_dma_map(scp);
1269 BUG_ON(sge_count < 0);
1270
1271 if (sge_count) {
1272 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1273 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1274 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1275 }
1276 }
1277 return sge_count;
1278 }
1279
1280 /**
1281 * megasas_make_sgl64 - Prepares 64-bit SGL
1282 * @instance: Adapter soft state
1283 * @scp: SCSI command from the mid-layer
1284 * @mfi_sgl: SGL to be filled in
1285 *
1286 * If successful, this function returns the number of SG elements. Otherwise,
1287 * it returnes -1.
1288 */
1289 static int
megasas_make_sgl64(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1290 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1291 union megasas_sgl *mfi_sgl)
1292 {
1293 int i;
1294 int sge_count;
1295 struct scatterlist *os_sgl;
1296
1297 sge_count = scsi_dma_map(scp);
1298 BUG_ON(sge_count < 0);
1299
1300 if (sge_count) {
1301 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1302 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1303 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1304 }
1305 }
1306 return sge_count;
1307 }
1308
1309 /**
1310 * megasas_make_sgl_skinny - Prepares IEEE SGL
1311 * @instance: Adapter soft state
1312 * @scp: SCSI command from the mid-layer
1313 * @mfi_sgl: SGL to be filled in
1314 *
1315 * If successful, this function returns the number of SG elements. Otherwise,
1316 * it returnes -1.
1317 */
1318 static int
megasas_make_sgl_skinny(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1319 megasas_make_sgl_skinny(struct megasas_instance *instance,
1320 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1321 {
1322 int i;
1323 int sge_count;
1324 struct scatterlist *os_sgl;
1325
1326 sge_count = scsi_dma_map(scp);
1327
1328 if (sge_count) {
1329 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1330 mfi_sgl->sge_skinny[i].length =
1331 cpu_to_le32(sg_dma_len(os_sgl));
1332 mfi_sgl->sge_skinny[i].phys_addr =
1333 cpu_to_le64(sg_dma_address(os_sgl));
1334 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1335 }
1336 }
1337 return sge_count;
1338 }
1339
1340 /**
1341 * megasas_get_frame_count - Computes the number of frames
1342 * @frame_type : type of frame- io or pthru frame
1343 * @sge_count : number of sg elements
1344 *
1345 * Returns the number of frames required for numnber of sge's (sge_count)
1346 */
1347
megasas_get_frame_count(struct megasas_instance * instance,u8 sge_count,u8 frame_type)1348 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1349 u8 sge_count, u8 frame_type)
1350 {
1351 int num_cnt;
1352 int sge_bytes;
1353 u32 sge_sz;
1354 u32 frame_count = 0;
1355
1356 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1357 sizeof(struct megasas_sge32);
1358
1359 if (instance->flag_ieee) {
1360 sge_sz = sizeof(struct megasas_sge_skinny);
1361 }
1362
1363 /*
1364 * Main frame can contain 2 SGEs for 64-bit SGLs and
1365 * 3 SGEs for 32-bit SGLs for ldio &
1366 * 1 SGEs for 64-bit SGLs and
1367 * 2 SGEs for 32-bit SGLs for pthru frame
1368 */
1369 if (unlikely(frame_type == PTHRU_FRAME)) {
1370 if (instance->flag_ieee == 1) {
1371 num_cnt = sge_count - 1;
1372 } else if (IS_DMA64)
1373 num_cnt = sge_count - 1;
1374 else
1375 num_cnt = sge_count - 2;
1376 } else {
1377 if (instance->flag_ieee == 1) {
1378 num_cnt = sge_count - 1;
1379 } else if (IS_DMA64)
1380 num_cnt = sge_count - 2;
1381 else
1382 num_cnt = sge_count - 3;
1383 }
1384
1385 if (num_cnt > 0) {
1386 sge_bytes = sge_sz * num_cnt;
1387
1388 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1389 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1390 }
1391 /* Main frame */
1392 frame_count += 1;
1393
1394 if (frame_count > 7)
1395 frame_count = 8;
1396 return frame_count;
1397 }
1398
1399 /**
1400 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1401 * @instance: Adapter soft state
1402 * @scp: SCSI command
1403 * @cmd: Command to be prepared in
1404 *
1405 * This function prepares CDB commands. These are typcially pass-through
1406 * commands to the devices.
1407 */
1408 static int
megasas_build_dcdb(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1409 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1410 struct megasas_cmd *cmd)
1411 {
1412 u32 is_logical;
1413 u32 device_id;
1414 u16 flags = 0;
1415 struct megasas_pthru_frame *pthru;
1416
1417 is_logical = MEGASAS_IS_LOGICAL(scp->device);
1418 device_id = MEGASAS_DEV_INDEX(scp);
1419 pthru = (struct megasas_pthru_frame *)cmd->frame;
1420
1421 if (scp->sc_data_direction == DMA_TO_DEVICE)
1422 flags = MFI_FRAME_DIR_WRITE;
1423 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1424 flags = MFI_FRAME_DIR_READ;
1425 else if (scp->sc_data_direction == DMA_NONE)
1426 flags = MFI_FRAME_DIR_NONE;
1427
1428 if (instance->flag_ieee == 1) {
1429 flags |= MFI_FRAME_IEEE;
1430 }
1431
1432 /*
1433 * Prepare the DCDB frame
1434 */
1435 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1436 pthru->cmd_status = 0x0;
1437 pthru->scsi_status = 0x0;
1438 pthru->target_id = device_id;
1439 pthru->lun = scp->device->lun;
1440 pthru->cdb_len = scp->cmd_len;
1441 pthru->timeout = 0;
1442 pthru->pad_0 = 0;
1443 pthru->flags = cpu_to_le16(flags);
1444 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1445
1446 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1447
1448 /*
1449 * If the command is for the tape device, set the
1450 * pthru timeout to the os layer timeout value.
1451 */
1452 if (scp->device->type == TYPE_TAPE) {
1453 if (scsi_cmd_to_rq(scp)->timeout / HZ > 0xFFFF)
1454 pthru->timeout = cpu_to_le16(0xFFFF);
1455 else
1456 pthru->timeout = cpu_to_le16(scsi_cmd_to_rq(scp)->timeout / HZ);
1457 }
1458
1459 /*
1460 * Construct SGL
1461 */
1462 if (instance->flag_ieee == 1) {
1463 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1464 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1465 &pthru->sgl);
1466 } else if (IS_DMA64) {
1467 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1468 pthru->sge_count = megasas_make_sgl64(instance, scp,
1469 &pthru->sgl);
1470 } else
1471 pthru->sge_count = megasas_make_sgl32(instance, scp,
1472 &pthru->sgl);
1473
1474 if (pthru->sge_count > instance->max_num_sge) {
1475 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1476 pthru->sge_count);
1477 return 0;
1478 }
1479
1480 /*
1481 * Sense info specific
1482 */
1483 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1484 pthru->sense_buf_phys_addr_hi =
1485 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1486 pthru->sense_buf_phys_addr_lo =
1487 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1488
1489 /*
1490 * Compute the total number of frames this command consumes. FW uses
1491 * this number to pull sufficient number of frames from host memory.
1492 */
1493 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1494 PTHRU_FRAME);
1495
1496 return cmd->frame_count;
1497 }
1498
1499 /**
1500 * megasas_build_ldio - Prepares IOs to logical devices
1501 * @instance: Adapter soft state
1502 * @scp: SCSI command
1503 * @cmd: Command to be prepared
1504 *
1505 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1506 */
1507 static int
megasas_build_ldio(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1508 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1509 struct megasas_cmd *cmd)
1510 {
1511 u32 device_id;
1512 u8 sc = scp->cmnd[0];
1513 u16 flags = 0;
1514 struct megasas_io_frame *ldio;
1515
1516 device_id = MEGASAS_DEV_INDEX(scp);
1517 ldio = (struct megasas_io_frame *)cmd->frame;
1518
1519 if (scp->sc_data_direction == DMA_TO_DEVICE)
1520 flags = MFI_FRAME_DIR_WRITE;
1521 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1522 flags = MFI_FRAME_DIR_READ;
1523
1524 if (instance->flag_ieee == 1) {
1525 flags |= MFI_FRAME_IEEE;
1526 }
1527
1528 /*
1529 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1530 */
1531 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1532 ldio->cmd_status = 0x0;
1533 ldio->scsi_status = 0x0;
1534 ldio->target_id = device_id;
1535 ldio->timeout = 0;
1536 ldio->reserved_0 = 0;
1537 ldio->pad_0 = 0;
1538 ldio->flags = cpu_to_le16(flags);
1539 ldio->start_lba_hi = 0;
1540 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1541
1542 /*
1543 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1544 */
1545 if (scp->cmd_len == 6) {
1546 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1547 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1548 ((u32) scp->cmnd[2] << 8) |
1549 (u32) scp->cmnd[3]);
1550
1551 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1552 }
1553
1554 /*
1555 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1556 */
1557 else if (scp->cmd_len == 10) {
1558 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1559 ((u32) scp->cmnd[7] << 8));
1560 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1561 ((u32) scp->cmnd[3] << 16) |
1562 ((u32) scp->cmnd[4] << 8) |
1563 (u32) scp->cmnd[5]);
1564 }
1565
1566 /*
1567 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1568 */
1569 else if (scp->cmd_len == 12) {
1570 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1571 ((u32) scp->cmnd[7] << 16) |
1572 ((u32) scp->cmnd[8] << 8) |
1573 (u32) scp->cmnd[9]);
1574
1575 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1576 ((u32) scp->cmnd[3] << 16) |
1577 ((u32) scp->cmnd[4] << 8) |
1578 (u32) scp->cmnd[5]);
1579 }
1580
1581 /*
1582 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1583 */
1584 else if (scp->cmd_len == 16) {
1585 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1586 ((u32) scp->cmnd[11] << 16) |
1587 ((u32) scp->cmnd[12] << 8) |
1588 (u32) scp->cmnd[13]);
1589
1590 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1591 ((u32) scp->cmnd[7] << 16) |
1592 ((u32) scp->cmnd[8] << 8) |
1593 (u32) scp->cmnd[9]);
1594
1595 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1596 ((u32) scp->cmnd[3] << 16) |
1597 ((u32) scp->cmnd[4] << 8) |
1598 (u32) scp->cmnd[5]);
1599
1600 }
1601
1602 /*
1603 * Construct SGL
1604 */
1605 if (instance->flag_ieee) {
1606 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1607 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1608 &ldio->sgl);
1609 } else if (IS_DMA64) {
1610 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1611 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1612 } else
1613 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1614
1615 if (ldio->sge_count > instance->max_num_sge) {
1616 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1617 ldio->sge_count);
1618 return 0;
1619 }
1620
1621 /*
1622 * Sense info specific
1623 */
1624 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1625 ldio->sense_buf_phys_addr_hi = 0;
1626 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1627
1628 /*
1629 * Compute the total number of frames this command consumes. FW uses
1630 * this number to pull sufficient number of frames from host memory.
1631 */
1632 cmd->frame_count = megasas_get_frame_count(instance,
1633 ldio->sge_count, IO_FRAME);
1634
1635 return cmd->frame_count;
1636 }
1637
1638 /**
1639 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD
1640 * and whether it's RW or non RW
1641 * @cmd: SCSI command
1642 *
1643 */
megasas_cmd_type(struct scsi_cmnd * cmd)1644 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1645 {
1646 int ret;
1647
1648 switch (cmd->cmnd[0]) {
1649 case READ_10:
1650 case WRITE_10:
1651 case READ_12:
1652 case WRITE_12:
1653 case READ_6:
1654 case WRITE_6:
1655 case READ_16:
1656 case WRITE_16:
1657 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1658 READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1659 break;
1660 default:
1661 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1662 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1663 }
1664 return ret;
1665 }
1666
1667 /**
1668 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1669 * in FW
1670 * @instance: Adapter soft state
1671 */
1672 static inline void
megasas_dump_pending_frames(struct megasas_instance * instance)1673 megasas_dump_pending_frames(struct megasas_instance *instance)
1674 {
1675 struct megasas_cmd *cmd;
1676 int i,n;
1677 union megasas_sgl *mfi_sgl;
1678 struct megasas_io_frame *ldio;
1679 struct megasas_pthru_frame *pthru;
1680 u32 sgcount;
1681 u16 max_cmd = instance->max_fw_cmds;
1682
1683 dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1684 dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1685 if (IS_DMA64)
1686 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1687 else
1688 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1689
1690 dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1691 for (i = 0; i < max_cmd; i++) {
1692 cmd = instance->cmd_list[i];
1693 if (!cmd->scmd)
1694 continue;
1695 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1696 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1697 ldio = (struct megasas_io_frame *)cmd->frame;
1698 mfi_sgl = &ldio->sgl;
1699 sgcount = ldio->sge_count;
1700 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1701 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1702 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1703 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1704 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1705 } else {
1706 pthru = (struct megasas_pthru_frame *) cmd->frame;
1707 mfi_sgl = &pthru->sgl;
1708 sgcount = pthru->sge_count;
1709 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1710 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1711 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1712 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1713 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1714 }
1715 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1716 for (n = 0; n < sgcount; n++) {
1717 if (IS_DMA64)
1718 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1719 le32_to_cpu(mfi_sgl->sge64[n].length),
1720 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1721 else
1722 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1723 le32_to_cpu(mfi_sgl->sge32[n].length),
1724 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1725 }
1726 }
1727 } /*for max_cmd*/
1728 dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1729 for (i = 0; i < max_cmd; i++) {
1730
1731 cmd = instance->cmd_list[i];
1732
1733 if (cmd->sync_cmd == 1)
1734 dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1735 }
1736 dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1737 }
1738
1739 u32
megasas_build_and_issue_cmd(struct megasas_instance * instance,struct scsi_cmnd * scmd)1740 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1741 struct scsi_cmnd *scmd)
1742 {
1743 struct megasas_cmd *cmd;
1744 u32 frame_count;
1745
1746 cmd = megasas_get_cmd(instance);
1747 if (!cmd)
1748 return SCSI_MLQUEUE_HOST_BUSY;
1749
1750 /*
1751 * Logical drive command
1752 */
1753 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1754 frame_count = megasas_build_ldio(instance, scmd, cmd);
1755 else
1756 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1757
1758 if (!frame_count)
1759 goto out_return_cmd;
1760
1761 cmd->scmd = scmd;
1762 megasas_priv(scmd)->cmd_priv = cmd;
1763
1764 /*
1765 * Issue the command to the FW
1766 */
1767 atomic_inc(&instance->fw_outstanding);
1768
1769 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1770 cmd->frame_count-1, instance->reg_set);
1771
1772 return 0;
1773 out_return_cmd:
1774 megasas_return_cmd(instance, cmd);
1775 return SCSI_MLQUEUE_HOST_BUSY;
1776 }
1777
1778
1779 /**
1780 * megasas_queue_command - Queue entry point
1781 * @shost: adapter SCSI host
1782 * @scmd: SCSI command to be queued
1783 */
1784 static int
megasas_queue_command(struct Scsi_Host * shost,struct scsi_cmnd * scmd)1785 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1786 {
1787 struct megasas_instance *instance;
1788 struct MR_PRIV_DEVICE *mr_device_priv_data;
1789 u32 ld_tgt_id;
1790
1791 instance = (struct megasas_instance *)
1792 scmd->device->host->hostdata;
1793
1794 if (instance->unload == 1) {
1795 scmd->result = DID_NO_CONNECT << 16;
1796 scsi_done(scmd);
1797 return 0;
1798 }
1799
1800 if (instance->issuepend_done == 0)
1801 return SCSI_MLQUEUE_HOST_BUSY;
1802
1803
1804 /* Check for an mpio path and adjust behavior */
1805 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1806 if (megasas_check_mpio_paths(instance, scmd) ==
1807 (DID_REQUEUE << 16)) {
1808 return SCSI_MLQUEUE_HOST_BUSY;
1809 } else {
1810 scmd->result = DID_NO_CONNECT << 16;
1811 scsi_done(scmd);
1812 return 0;
1813 }
1814 }
1815
1816 mr_device_priv_data = scmd->device->hostdata;
1817 if (!mr_device_priv_data ||
1818 (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)) {
1819 scmd->result = DID_NO_CONNECT << 16;
1820 scsi_done(scmd);
1821 return 0;
1822 }
1823
1824 if (MEGASAS_IS_LOGICAL(scmd->device)) {
1825 ld_tgt_id = MEGASAS_TARGET_ID(scmd->device);
1826 if (instance->ld_tgtid_status[ld_tgt_id] == LD_TARGET_ID_DELETED) {
1827 scmd->result = DID_NO_CONNECT << 16;
1828 scsi_done(scmd);
1829 return 0;
1830 }
1831 }
1832
1833 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1834 return SCSI_MLQUEUE_HOST_BUSY;
1835
1836 if (mr_device_priv_data->tm_busy)
1837 return SCSI_MLQUEUE_DEVICE_BUSY;
1838
1839
1840 scmd->result = 0;
1841
1842 if (MEGASAS_IS_LOGICAL(scmd->device) &&
1843 (scmd->device->id >= instance->fw_supported_vd_count ||
1844 scmd->device->lun)) {
1845 scmd->result = DID_BAD_TARGET << 16;
1846 goto out_done;
1847 }
1848
1849 if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1850 MEGASAS_IS_LOGICAL(scmd->device) &&
1851 (!instance->fw_sync_cache_support)) {
1852 scmd->result = DID_OK << 16;
1853 goto out_done;
1854 }
1855
1856 return instance->instancet->build_and_issue_cmd(instance, scmd);
1857
1858 out_done:
1859 scsi_done(scmd);
1860 return 0;
1861 }
1862
megasas_lookup_instance(u16 host_no)1863 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1864 {
1865 int i;
1866
1867 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1868
1869 if ((megasas_mgmt_info.instance[i]) &&
1870 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1871 return megasas_mgmt_info.instance[i];
1872 }
1873
1874 return NULL;
1875 }
1876
1877 /*
1878 * megasas_set_dynamic_target_properties -
1879 * Device property set by driver may not be static and it is required to be
1880 * updated after OCR
1881 *
1882 * set tm_capable.
1883 * set dma alignment (only for eedp protection enable vd).
1884 *
1885 * @sdev: OS provided scsi device
1886 *
1887 * Returns void
1888 */
megasas_set_dynamic_target_properties(struct scsi_device * sdev,struct queue_limits * lim,bool is_target_prop)1889 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1890 struct queue_limits *lim, bool is_target_prop)
1891 {
1892 u16 pd_index = 0, ld;
1893 u32 device_id;
1894 struct megasas_instance *instance;
1895 struct fusion_context *fusion;
1896 struct MR_PRIV_DEVICE *mr_device_priv_data;
1897 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1898 struct MR_LD_RAID *raid;
1899 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1900
1901 instance = megasas_lookup_instance(sdev->host->host_no);
1902 fusion = instance->ctrl_context;
1903 mr_device_priv_data = sdev->hostdata;
1904
1905 if (!fusion || !mr_device_priv_data)
1906 return;
1907
1908 if (MEGASAS_IS_LOGICAL(sdev)) {
1909 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1910 + sdev->id;
1911 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1912 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1913 if (ld >= instance->fw_supported_vd_count)
1914 return;
1915 raid = MR_LdRaidGet(ld, local_map_ptr);
1916
1917 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
1918 if (lim)
1919 lim->dma_alignment = 0x7;
1920 }
1921
1922 mr_device_priv_data->is_tm_capable =
1923 raid->capability.tmCapable;
1924
1925 if (!raid->flags.isEPD)
1926 sdev->no_write_same = 1;
1927
1928 } else if (instance->use_seqnum_jbod_fp) {
1929 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1930 sdev->id;
1931 pd_sync = (void *)fusion->pd_seq_sync
1932 [(instance->pd_seq_map_id - 1) & 1];
1933 mr_device_priv_data->is_tm_capable =
1934 pd_sync->seq[pd_index].capability.tmCapable;
1935 }
1936
1937 if (is_target_prop && instance->tgt_prop->reset_tmo) {
1938 /*
1939 * If FW provides a target reset timeout value, driver will use
1940 * it. If not set, fallback to default values.
1941 */
1942 mr_device_priv_data->target_reset_tmo =
1943 min_t(u8, instance->max_reset_tmo,
1944 instance->tgt_prop->reset_tmo);
1945 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1946 } else {
1947 mr_device_priv_data->target_reset_tmo =
1948 MEGASAS_DEFAULT_TM_TIMEOUT;
1949 mr_device_priv_data->task_abort_tmo =
1950 MEGASAS_DEFAULT_TM_TIMEOUT;
1951 }
1952 }
1953
1954 /*
1955 * megasas_set_nvme_device_properties -
1956 * set nomerges=2
1957 * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1958 * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1959 *
1960 * MR firmware provides value in KB. Caller of this function converts
1961 * kb into bytes.
1962 *
1963 * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1964 * MR firmware provides value 128 as (32 * 4K) = 128K.
1965 *
1966 * @sdev: scsi device
1967 * @max_io_size: maximum io transfer size
1968 *
1969 */
1970 static inline void
megasas_set_nvme_device_properties(struct scsi_device * sdev,struct queue_limits * lim,u32 max_io_size)1971 megasas_set_nvme_device_properties(struct scsi_device *sdev,
1972 struct queue_limits *lim, u32 max_io_size)
1973 {
1974 struct megasas_instance *instance;
1975 u32 mr_nvme_pg_size;
1976
1977 instance = (struct megasas_instance *)sdev->host->hostdata;
1978 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1979 MR_DEFAULT_NVME_PAGE_SIZE);
1980
1981 lim->max_hw_sectors = max_io_size / 512;
1982 lim->virt_boundary_mask = mr_nvme_pg_size - 1;
1983 }
1984
1985 /*
1986 * megasas_set_fw_assisted_qd -
1987 * set device queue depth to can_queue
1988 * set device queue depth to fw assisted qd
1989 *
1990 * @sdev: scsi device
1991 * @is_target_prop true, if fw provided target properties.
1992 */
megasas_set_fw_assisted_qd(struct scsi_device * sdev,bool is_target_prop)1993 static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,
1994 bool is_target_prop)
1995 {
1996 u8 interface_type;
1997 u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1998 u32 tgt_device_qd;
1999 struct megasas_instance *instance;
2000 struct MR_PRIV_DEVICE *mr_device_priv_data;
2001
2002 instance = megasas_lookup_instance(sdev->host->host_no);
2003 mr_device_priv_data = sdev->hostdata;
2004 interface_type = mr_device_priv_data->interface_type;
2005
2006 switch (interface_type) {
2007 case SAS_PD:
2008 device_qd = MEGASAS_SAS_QD;
2009 break;
2010 case SATA_PD:
2011 device_qd = MEGASAS_SATA_QD;
2012 break;
2013 case NVME_PD:
2014 device_qd = MEGASAS_NVME_QD;
2015 break;
2016 }
2017
2018 if (is_target_prop) {
2019 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
2020 if (tgt_device_qd)
2021 device_qd = min(instance->host->can_queue,
2022 (int)tgt_device_qd);
2023 }
2024
2025 if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)
2026 device_qd = instance->host->can_queue;
2027
2028 scsi_change_queue_depth(sdev, device_qd);
2029 }
2030
2031 /*
2032 * megasas_set_static_target_properties -
2033 * Device property set by driver are static and it is not required to be
2034 * updated after OCR.
2035 *
2036 * set io timeout
2037 * set device queue depth
2038 * set nvme device properties. see - megasas_set_nvme_device_properties
2039 *
2040 * @sdev: scsi device
2041 * @is_target_prop true, if fw provided target properties.
2042 */
megasas_set_static_target_properties(struct scsi_device * sdev,struct queue_limits * lim,bool is_target_prop)2043 static void megasas_set_static_target_properties(struct scsi_device *sdev,
2044 struct queue_limits *lim, bool is_target_prop)
2045 {
2046 u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
2047 struct megasas_instance *instance;
2048
2049 instance = megasas_lookup_instance(sdev->host->host_no);
2050
2051 /*
2052 * The RAID firmware may require extended timeouts.
2053 */
2054 blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
2055
2056 /* max_io_size_kb will be set to non zero for
2057 * nvme based vd and syspd.
2058 */
2059 if (is_target_prop)
2060 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
2061
2062 if (instance->nvme_page_size && max_io_size_kb)
2063 megasas_set_nvme_device_properties(sdev, lim,
2064 max_io_size_kb << 10);
2065
2066 megasas_set_fw_assisted_qd(sdev, is_target_prop);
2067 }
2068
2069
megasas_sdev_configure(struct scsi_device * sdev,struct queue_limits * lim)2070 static int megasas_sdev_configure(struct scsi_device *sdev,
2071 struct queue_limits *lim)
2072 {
2073 u16 pd_index = 0;
2074 struct megasas_instance *instance;
2075 int ret_target_prop = DCMD_FAILED;
2076 bool is_target_prop = false;
2077
2078 instance = megasas_lookup_instance(sdev->host->host_no);
2079 if (instance->pd_list_not_supported) {
2080 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2081 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2082 sdev->id;
2083 if (instance->pd_list[pd_index].driveState !=
2084 MR_PD_STATE_SYSTEM)
2085 return -ENXIO;
2086 }
2087 }
2088
2089 mutex_lock(&instance->reset_mutex);
2090 /* Send DCMD to Firmware and cache the information */
2091 if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2092 megasas_get_pd_info(instance, sdev);
2093
2094 /* Some ventura firmware may not have instance->nvme_page_size set.
2095 * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2096 */
2097 if ((instance->tgt_prop) && (instance->nvme_page_size))
2098 ret_target_prop = megasas_get_target_prop(instance, sdev);
2099
2100 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2101 megasas_set_static_target_properties(sdev, lim, is_target_prop);
2102
2103 /* This sdev property may change post OCR */
2104 megasas_set_dynamic_target_properties(sdev, lim, is_target_prop);
2105
2106 if (!MEGASAS_IS_LOGICAL(sdev))
2107 sdev->no_vpd_size = 1;
2108
2109 mutex_unlock(&instance->reset_mutex);
2110
2111 return 0;
2112 }
2113
megasas_sdev_init(struct scsi_device * sdev)2114 static int megasas_sdev_init(struct scsi_device *sdev)
2115 {
2116 u16 pd_index = 0, ld_tgt_id;
2117 struct megasas_instance *instance ;
2118 struct MR_PRIV_DEVICE *mr_device_priv_data;
2119
2120 instance = megasas_lookup_instance(sdev->host->host_no);
2121 if (!MEGASAS_IS_LOGICAL(sdev)) {
2122 /*
2123 * Open the OS scan to the SYSTEM PD
2124 */
2125 pd_index =
2126 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2127 sdev->id;
2128 if ((instance->pd_list_not_supported ||
2129 instance->pd_list[pd_index].driveState ==
2130 MR_PD_STATE_SYSTEM)) {
2131 goto scan_target;
2132 }
2133 return -ENXIO;
2134 } else if (!MEGASAS_IS_LUN_VALID(sdev)) {
2135 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2136 return -ENXIO;
2137 }
2138
2139 scan_target:
2140 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2141 GFP_KERNEL);
2142 if (!mr_device_priv_data)
2143 return -ENOMEM;
2144
2145 if (MEGASAS_IS_LOGICAL(sdev)) {
2146 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2147 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_ACTIVE;
2148 if (megasas_dbg_lvl & LD_PD_DEBUG)
2149 sdev_printk(KERN_INFO, sdev, "LD target ID %d created.\n", ld_tgt_id);
2150 }
2151
2152 sdev->hostdata = mr_device_priv_data;
2153
2154 atomic_set(&mr_device_priv_data->r1_ldio_hint,
2155 instance->r1_ldio_hint_default);
2156 return 0;
2157 }
2158
megasas_sdev_destroy(struct scsi_device * sdev)2159 static void megasas_sdev_destroy(struct scsi_device *sdev)
2160 {
2161 u16 ld_tgt_id;
2162 struct megasas_instance *instance;
2163
2164 instance = megasas_lookup_instance(sdev->host->host_no);
2165
2166 if (MEGASAS_IS_LOGICAL(sdev)) {
2167 if (!MEGASAS_IS_LUN_VALID(sdev)) {
2168 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2169 return;
2170 }
2171 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2172 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_DELETED;
2173 if (megasas_dbg_lvl & LD_PD_DEBUG)
2174 sdev_printk(KERN_INFO, sdev,
2175 "LD target ID %d removed from OS stack\n", ld_tgt_id);
2176 }
2177
2178 kfree(sdev->hostdata);
2179 sdev->hostdata = NULL;
2180 }
2181
2182 /*
2183 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2184 * kill adapter
2185 * @instance: Adapter soft state
2186 *
2187 */
megasas_complete_outstanding_ioctls(struct megasas_instance * instance)2188 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2189 {
2190 int i;
2191 struct megasas_cmd *cmd_mfi;
2192 struct megasas_cmd_fusion *cmd_fusion;
2193 struct fusion_context *fusion = instance->ctrl_context;
2194
2195 /* Find all outstanding ioctls */
2196 if (fusion) {
2197 for (i = 0; i < instance->max_fw_cmds; i++) {
2198 cmd_fusion = fusion->cmd_list[i];
2199 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2200 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2201 if (cmd_mfi->sync_cmd &&
2202 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2203 cmd_mfi->frame->hdr.cmd_status =
2204 MFI_STAT_WRONG_STATE;
2205 megasas_complete_cmd(instance,
2206 cmd_mfi, DID_OK);
2207 }
2208 }
2209 }
2210 } else {
2211 for (i = 0; i < instance->max_fw_cmds; i++) {
2212 cmd_mfi = instance->cmd_list[i];
2213 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2214 MFI_CMD_ABORT)
2215 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2216 }
2217 }
2218 }
2219
2220
megaraid_sas_kill_hba(struct megasas_instance * instance)2221 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2222 {
2223 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2224 dev_warn(&instance->pdev->dev,
2225 "Adapter already dead, skipping kill HBA\n");
2226 return;
2227 }
2228
2229 /* Set critical error to block I/O & ioctls in case caller didn't */
2230 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2231 /* Wait 1 second to ensure IO or ioctls in build have posted */
2232 msleep(1000);
2233 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2234 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2235 (instance->adapter_type != MFI_SERIES)) {
2236 if (!instance->requestorId) {
2237 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2238 /* Flush */
2239 readl(&instance->reg_set->doorbell);
2240 }
2241 if (instance->requestorId && instance->peerIsPresent)
2242 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2243 } else {
2244 writel(MFI_STOP_ADP,
2245 &instance->reg_set->inbound_doorbell);
2246 }
2247 /* Complete outstanding ioctls when adapter is killed */
2248 megasas_complete_outstanding_ioctls(instance);
2249 }
2250
2251 /**
2252 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2253 * restored to max value
2254 * @instance: Adapter soft state
2255 *
2256 */
2257 void
megasas_check_and_restore_queue_depth(struct megasas_instance * instance)2258 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2259 {
2260 unsigned long flags;
2261
2262 if (instance->flag & MEGASAS_FW_BUSY
2263 && time_after(jiffies, instance->last_time + 5 * HZ)
2264 && atomic_read(&instance->fw_outstanding) <
2265 instance->throttlequeuedepth + 1) {
2266
2267 spin_lock_irqsave(instance->host->host_lock, flags);
2268 instance->flag &= ~MEGASAS_FW_BUSY;
2269
2270 instance->host->can_queue = instance->cur_can_queue;
2271 spin_unlock_irqrestore(instance->host->host_lock, flags);
2272 }
2273 }
2274
2275 /**
2276 * megasas_complete_cmd_dpc - Returns FW's controller structure
2277 * @instance_addr: Address of adapter soft state
2278 *
2279 * Tasklet to complete cmds
2280 */
megasas_complete_cmd_dpc(unsigned long instance_addr)2281 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2282 {
2283 u32 producer;
2284 u32 consumer;
2285 u32 context;
2286 struct megasas_cmd *cmd;
2287 struct megasas_instance *instance =
2288 (struct megasas_instance *)instance_addr;
2289 unsigned long flags;
2290
2291 /* If we have already declared adapter dead, donot complete cmds */
2292 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2293 return;
2294
2295 spin_lock_irqsave(&instance->completion_lock, flags);
2296
2297 producer = le32_to_cpu(*instance->producer);
2298 consumer = le32_to_cpu(*instance->consumer);
2299
2300 while (consumer != producer) {
2301 context = le32_to_cpu(instance->reply_queue[consumer]);
2302 if (context >= instance->max_fw_cmds) {
2303 dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2304 context);
2305 BUG();
2306 }
2307
2308 cmd = instance->cmd_list[context];
2309
2310 megasas_complete_cmd(instance, cmd, DID_OK);
2311
2312 consumer++;
2313 if (consumer == (instance->max_fw_cmds + 1)) {
2314 consumer = 0;
2315 }
2316 }
2317
2318 *instance->consumer = cpu_to_le32(producer);
2319
2320 spin_unlock_irqrestore(&instance->completion_lock, flags);
2321
2322 /*
2323 * Check if we can restore can_queue
2324 */
2325 megasas_check_and_restore_queue_depth(instance);
2326 }
2327
2328 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2329
2330 /**
2331 * megasas_start_timer - Initializes sriov heartbeat timer object
2332 * @instance: Adapter soft state
2333 *
2334 */
megasas_start_timer(struct megasas_instance * instance)2335 void megasas_start_timer(struct megasas_instance *instance)
2336 {
2337 struct timer_list *timer = &instance->sriov_heartbeat_timer;
2338
2339 timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2340 timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2341 add_timer(timer);
2342 }
2343
2344 static void
2345 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2346
2347 static void
2348 process_fw_state_change_wq(struct work_struct *work);
2349
megasas_do_ocr(struct megasas_instance * instance)2350 static void megasas_do_ocr(struct megasas_instance *instance)
2351 {
2352 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2353 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2354 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2355 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2356 }
2357 instance->instancet->disable_intr(instance);
2358 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2359 instance->issuepend_done = 0;
2360
2361 atomic_set(&instance->fw_outstanding, 0);
2362 megasas_internal_reset_defer_cmds(instance);
2363 process_fw_state_change_wq(&instance->work_init);
2364 }
2365
megasas_get_ld_vf_affiliation_111(struct megasas_instance * instance,int initial)2366 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2367 int initial)
2368 {
2369 struct megasas_cmd *cmd;
2370 struct megasas_dcmd_frame *dcmd;
2371 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2372 dma_addr_t new_affiliation_111_h;
2373 int ld, retval = 0;
2374 u8 thisVf;
2375
2376 cmd = megasas_get_cmd(instance);
2377
2378 if (!cmd) {
2379 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2380 "Failed to get cmd for scsi%d\n",
2381 instance->host->host_no);
2382 return -ENOMEM;
2383 }
2384
2385 dcmd = &cmd->frame->dcmd;
2386
2387 if (!instance->vf_affiliation_111) {
2388 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2389 "affiliation for scsi%d\n", instance->host->host_no);
2390 megasas_return_cmd(instance, cmd);
2391 return -ENOMEM;
2392 }
2393
2394 if (initial)
2395 memset(instance->vf_affiliation_111, 0,
2396 sizeof(struct MR_LD_VF_AFFILIATION_111));
2397 else {
2398 new_affiliation_111 =
2399 dma_alloc_coherent(&instance->pdev->dev,
2400 sizeof(struct MR_LD_VF_AFFILIATION_111),
2401 &new_affiliation_111_h, GFP_KERNEL);
2402 if (!new_affiliation_111) {
2403 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2404 "memory for new affiliation for scsi%d\n",
2405 instance->host->host_no);
2406 megasas_return_cmd(instance, cmd);
2407 return -ENOMEM;
2408 }
2409 }
2410
2411 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2412
2413 dcmd->cmd = MFI_CMD_DCMD;
2414 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2415 dcmd->sge_count = 1;
2416 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2417 dcmd->timeout = 0;
2418 dcmd->pad_0 = 0;
2419 dcmd->data_xfer_len =
2420 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2421 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2422
2423 if (initial)
2424 dcmd->sgl.sge32[0].phys_addr =
2425 cpu_to_le32(instance->vf_affiliation_111_h);
2426 else
2427 dcmd->sgl.sge32[0].phys_addr =
2428 cpu_to_le32(new_affiliation_111_h);
2429
2430 dcmd->sgl.sge32[0].length = cpu_to_le32(
2431 sizeof(struct MR_LD_VF_AFFILIATION_111));
2432
2433 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2434 "scsi%d\n", instance->host->host_no);
2435
2436 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2437 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2438 " failed with status 0x%x for scsi%d\n",
2439 dcmd->cmd_status, instance->host->host_no);
2440 retval = 1; /* Do a scan if we couldn't get affiliation */
2441 goto out;
2442 }
2443
2444 if (!initial) {
2445 thisVf = new_affiliation_111->thisVf;
2446 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2447 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2448 new_affiliation_111->map[ld].policy[thisVf]) {
2449 dev_warn(&instance->pdev->dev, "SR-IOV: "
2450 "Got new LD/VF affiliation for scsi%d\n",
2451 instance->host->host_no);
2452 memcpy(instance->vf_affiliation_111,
2453 new_affiliation_111,
2454 sizeof(struct MR_LD_VF_AFFILIATION_111));
2455 retval = 1;
2456 goto out;
2457 }
2458 }
2459 out:
2460 if (new_affiliation_111) {
2461 dma_free_coherent(&instance->pdev->dev,
2462 sizeof(struct MR_LD_VF_AFFILIATION_111),
2463 new_affiliation_111,
2464 new_affiliation_111_h);
2465 }
2466
2467 megasas_return_cmd(instance, cmd);
2468
2469 return retval;
2470 }
2471
megasas_get_ld_vf_affiliation_12(struct megasas_instance * instance,int initial)2472 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2473 int initial)
2474 {
2475 struct megasas_cmd *cmd;
2476 struct megasas_dcmd_frame *dcmd;
2477 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2478 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2479 dma_addr_t new_affiliation_h;
2480 int i, j, retval = 0, found = 0, doscan = 0;
2481 u8 thisVf;
2482
2483 cmd = megasas_get_cmd(instance);
2484
2485 if (!cmd) {
2486 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2487 "Failed to get cmd for scsi%d\n",
2488 instance->host->host_no);
2489 return -ENOMEM;
2490 }
2491
2492 dcmd = &cmd->frame->dcmd;
2493
2494 if (!instance->vf_affiliation) {
2495 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2496 "affiliation for scsi%d\n", instance->host->host_no);
2497 megasas_return_cmd(instance, cmd);
2498 return -ENOMEM;
2499 }
2500
2501 if (initial)
2502 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2503 sizeof(struct MR_LD_VF_AFFILIATION));
2504 else {
2505 new_affiliation =
2506 dma_alloc_coherent(&instance->pdev->dev,
2507 (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2508 &new_affiliation_h, GFP_KERNEL);
2509 if (!new_affiliation) {
2510 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2511 "memory for new affiliation for scsi%d\n",
2512 instance->host->host_no);
2513 megasas_return_cmd(instance, cmd);
2514 return -ENOMEM;
2515 }
2516 }
2517
2518 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2519
2520 dcmd->cmd = MFI_CMD_DCMD;
2521 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2522 dcmd->sge_count = 1;
2523 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2524 dcmd->timeout = 0;
2525 dcmd->pad_0 = 0;
2526 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2527 sizeof(struct MR_LD_VF_AFFILIATION));
2528 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2529
2530 if (initial)
2531 dcmd->sgl.sge32[0].phys_addr =
2532 cpu_to_le32(instance->vf_affiliation_h);
2533 else
2534 dcmd->sgl.sge32[0].phys_addr =
2535 cpu_to_le32(new_affiliation_h);
2536
2537 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2538 sizeof(struct MR_LD_VF_AFFILIATION));
2539
2540 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2541 "scsi%d\n", instance->host->host_no);
2542
2543
2544 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2545 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2546 " failed with status 0x%x for scsi%d\n",
2547 dcmd->cmd_status, instance->host->host_no);
2548 retval = 1; /* Do a scan if we couldn't get affiliation */
2549 goto out;
2550 }
2551
2552 if (!initial) {
2553 if (!new_affiliation->ldCount) {
2554 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2555 "affiliation for passive path for scsi%d\n",
2556 instance->host->host_no);
2557 retval = 1;
2558 goto out;
2559 }
2560 newmap = new_affiliation->map;
2561 savedmap = instance->vf_affiliation->map;
2562 thisVf = new_affiliation->thisVf;
2563 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2564 found = 0;
2565 for (j = 0; j < instance->vf_affiliation->ldCount;
2566 j++) {
2567 if (newmap->ref.targetId ==
2568 savedmap->ref.targetId) {
2569 found = 1;
2570 if (newmap->policy[thisVf] !=
2571 savedmap->policy[thisVf]) {
2572 doscan = 1;
2573 goto out;
2574 }
2575 }
2576 savedmap = (struct MR_LD_VF_MAP *)
2577 ((unsigned char *)savedmap +
2578 savedmap->size);
2579 }
2580 if (!found && newmap->policy[thisVf] !=
2581 MR_LD_ACCESS_HIDDEN) {
2582 doscan = 1;
2583 goto out;
2584 }
2585 newmap = (struct MR_LD_VF_MAP *)
2586 ((unsigned char *)newmap + newmap->size);
2587 }
2588
2589 newmap = new_affiliation->map;
2590 savedmap = instance->vf_affiliation->map;
2591
2592 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2593 found = 0;
2594 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2595 if (savedmap->ref.targetId ==
2596 newmap->ref.targetId) {
2597 found = 1;
2598 if (savedmap->policy[thisVf] !=
2599 newmap->policy[thisVf]) {
2600 doscan = 1;
2601 goto out;
2602 }
2603 }
2604 newmap = (struct MR_LD_VF_MAP *)
2605 ((unsigned char *)newmap +
2606 newmap->size);
2607 }
2608 if (!found && savedmap->policy[thisVf] !=
2609 MR_LD_ACCESS_HIDDEN) {
2610 doscan = 1;
2611 goto out;
2612 }
2613 savedmap = (struct MR_LD_VF_MAP *)
2614 ((unsigned char *)savedmap +
2615 savedmap->size);
2616 }
2617 }
2618 out:
2619 if (doscan) {
2620 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2621 "affiliation for scsi%d\n", instance->host->host_no);
2622 memcpy(instance->vf_affiliation, new_affiliation,
2623 new_affiliation->size);
2624 retval = 1;
2625 }
2626
2627 if (new_affiliation)
2628 dma_free_coherent(&instance->pdev->dev,
2629 (MAX_LOGICAL_DRIVES + 1) *
2630 sizeof(struct MR_LD_VF_AFFILIATION),
2631 new_affiliation, new_affiliation_h);
2632 megasas_return_cmd(instance, cmd);
2633
2634 return retval;
2635 }
2636
2637 /* This function will get the current SR-IOV LD/VF affiliation */
megasas_get_ld_vf_affiliation(struct megasas_instance * instance,int initial)2638 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2639 int initial)
2640 {
2641 int retval;
2642
2643 if (instance->PlasmaFW111)
2644 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2645 else
2646 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2647 return retval;
2648 }
2649
2650 /* This function will tell FW to start the SR-IOV heartbeat */
megasas_sriov_start_heartbeat(struct megasas_instance * instance,int initial)2651 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2652 int initial)
2653 {
2654 struct megasas_cmd *cmd;
2655 struct megasas_dcmd_frame *dcmd;
2656 int retval = 0;
2657
2658 cmd = megasas_get_cmd(instance);
2659
2660 if (!cmd) {
2661 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2662 "Failed to get cmd for scsi%d\n",
2663 instance->host->host_no);
2664 return -ENOMEM;
2665 }
2666
2667 dcmd = &cmd->frame->dcmd;
2668
2669 if (initial) {
2670 instance->hb_host_mem =
2671 dma_alloc_coherent(&instance->pdev->dev,
2672 sizeof(struct MR_CTRL_HB_HOST_MEM),
2673 &instance->hb_host_mem_h,
2674 GFP_KERNEL);
2675 if (!instance->hb_host_mem) {
2676 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2677 " memory for heartbeat host memory for scsi%d\n",
2678 instance->host->host_no);
2679 retval = -ENOMEM;
2680 goto out;
2681 }
2682 }
2683
2684 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2685
2686 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2687 dcmd->cmd = MFI_CMD_DCMD;
2688 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2689 dcmd->sge_count = 1;
2690 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2691 dcmd->timeout = 0;
2692 dcmd->pad_0 = 0;
2693 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2694 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2695
2696 megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2697 sizeof(struct MR_CTRL_HB_HOST_MEM));
2698
2699 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2700 instance->host->host_no);
2701
2702 if ((instance->adapter_type != MFI_SERIES) &&
2703 !instance->mask_interrupts)
2704 retval = megasas_issue_blocked_cmd(instance, cmd,
2705 MEGASAS_ROUTINE_WAIT_TIME_VF);
2706 else
2707 retval = megasas_issue_polled(instance, cmd);
2708
2709 if (retval) {
2710 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2711 "_MEM_ALLOC DCMD %s for scsi%d\n",
2712 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2713 "timed out" : "failed", instance->host->host_no);
2714 retval = 1;
2715 }
2716
2717 out:
2718 megasas_return_cmd(instance, cmd);
2719
2720 return retval;
2721 }
2722
2723 /* Handler for SR-IOV heartbeat */
megasas_sriov_heartbeat_handler(struct timer_list * t)2724 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2725 {
2726 struct megasas_instance *instance =
2727 from_timer(instance, t, sriov_heartbeat_timer);
2728
2729 if (instance->hb_host_mem->HB.fwCounter !=
2730 instance->hb_host_mem->HB.driverCounter) {
2731 instance->hb_host_mem->HB.driverCounter =
2732 instance->hb_host_mem->HB.fwCounter;
2733 mod_timer(&instance->sriov_heartbeat_timer,
2734 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2735 } else {
2736 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2737 "completed for scsi%d\n", instance->host->host_no);
2738 schedule_work(&instance->work_init);
2739 }
2740 }
2741
2742 /**
2743 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2744 * @instance: Adapter soft state
2745 *
2746 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2747 * complete all its outstanding commands. Returns error if one or more IOs
2748 * are pending after this time period. It also marks the controller dead.
2749 */
megasas_wait_for_outstanding(struct megasas_instance * instance)2750 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2751 {
2752 int i, sl, outstanding;
2753 u32 reset_index;
2754 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2755 unsigned long flags;
2756 struct list_head clist_local;
2757 struct megasas_cmd *reset_cmd;
2758 u32 fw_state;
2759
2760 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2761 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2762 __func__, __LINE__);
2763 return FAILED;
2764 }
2765
2766 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2767
2768 INIT_LIST_HEAD(&clist_local);
2769 spin_lock_irqsave(&instance->hba_lock, flags);
2770 list_splice_init(&instance->internal_reset_pending_q,
2771 &clist_local);
2772 spin_unlock_irqrestore(&instance->hba_lock, flags);
2773
2774 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2775 for (i = 0; i < wait_time; i++) {
2776 msleep(1000);
2777 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2778 break;
2779 }
2780
2781 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2782 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2783 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2784 return FAILED;
2785 }
2786
2787 reset_index = 0;
2788 while (!list_empty(&clist_local)) {
2789 reset_cmd = list_entry((&clist_local)->next,
2790 struct megasas_cmd, list);
2791 list_del_init(&reset_cmd->list);
2792 if (reset_cmd->scmd) {
2793 reset_cmd->scmd->result = DID_REQUEUE << 16;
2794 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2795 reset_index, reset_cmd,
2796 reset_cmd->scmd->cmnd[0]);
2797
2798 scsi_done(reset_cmd->scmd);
2799 megasas_return_cmd(instance, reset_cmd);
2800 } else if (reset_cmd->sync_cmd) {
2801 dev_notice(&instance->pdev->dev, "%p synch cmds"
2802 "reset queue\n",
2803 reset_cmd);
2804
2805 reset_cmd->cmd_status_drv = DCMD_INIT;
2806 instance->instancet->fire_cmd(instance,
2807 reset_cmd->frame_phys_addr,
2808 0, instance->reg_set);
2809 } else {
2810 dev_notice(&instance->pdev->dev, "%p unexpected"
2811 "cmds lst\n",
2812 reset_cmd);
2813 }
2814 reset_index++;
2815 }
2816
2817 return SUCCESS;
2818 }
2819
2820 for (i = 0; i < resetwaittime; i++) {
2821 outstanding = atomic_read(&instance->fw_outstanding);
2822
2823 if (!outstanding)
2824 break;
2825
2826 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2827 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2828 "commands to complete\n",i,outstanding);
2829 /*
2830 * Call cmd completion routine. Cmd to be
2831 * be completed directly without depending on isr.
2832 */
2833 megasas_complete_cmd_dpc((unsigned long)instance);
2834 }
2835
2836 msleep(1000);
2837 }
2838
2839 i = 0;
2840 outstanding = atomic_read(&instance->fw_outstanding);
2841 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2842
2843 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2844 goto no_outstanding;
2845
2846 if (instance->disableOnlineCtrlReset)
2847 goto kill_hba_and_failed;
2848 do {
2849 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2850 dev_info(&instance->pdev->dev,
2851 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2852 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2853 if (i == 3)
2854 goto kill_hba_and_failed;
2855 megasas_do_ocr(instance);
2856
2857 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2858 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2859 __func__, __LINE__);
2860 return FAILED;
2861 }
2862 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2863 __func__, __LINE__);
2864
2865 for (sl = 0; sl < 10; sl++)
2866 msleep(500);
2867
2868 outstanding = atomic_read(&instance->fw_outstanding);
2869
2870 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2871 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2872 goto no_outstanding;
2873 }
2874 i++;
2875 } while (i <= 3);
2876
2877 no_outstanding:
2878
2879 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2880 __func__, __LINE__);
2881 return SUCCESS;
2882
2883 kill_hba_and_failed:
2884
2885 /* Reset not supported, kill adapter */
2886 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2887 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2888 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2889 atomic_read(&instance->fw_outstanding));
2890 megasas_dump_pending_frames(instance);
2891 megaraid_sas_kill_hba(instance);
2892
2893 return FAILED;
2894 }
2895
2896 /**
2897 * megasas_generic_reset - Generic reset routine
2898 * @scmd: Mid-layer SCSI command
2899 *
2900 * This routine implements a generic reset handler for device, bus and host
2901 * reset requests. Device, bus and host specific reset handlers can use this
2902 * function after they do their specific tasks.
2903 */
megasas_generic_reset(struct scsi_cmnd * scmd)2904 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2905 {
2906 int ret_val;
2907 struct megasas_instance *instance;
2908
2909 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2910
2911 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2912 scmd->cmnd[0], scmd->retries);
2913
2914 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2915 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2916 return FAILED;
2917 }
2918
2919 ret_val = megasas_wait_for_outstanding(instance);
2920 if (ret_val == SUCCESS)
2921 dev_notice(&instance->pdev->dev, "reset successful\n");
2922 else
2923 dev_err(&instance->pdev->dev, "failed to do reset\n");
2924
2925 return ret_val;
2926 }
2927
2928 /**
2929 * megasas_reset_timer - quiesce the adapter if required
2930 * @scmd: scsi cmnd
2931 *
2932 * Sets the FW busy flag and reduces the host->can_queue if the
2933 * cmd has not been completed within the timeout period.
2934 */
megasas_reset_timer(struct scsi_cmnd * scmd)2935 static enum scsi_timeout_action megasas_reset_timer(struct scsi_cmnd *scmd)
2936 {
2937 struct megasas_instance *instance;
2938 unsigned long flags;
2939
2940 if (time_after(jiffies, scmd->jiffies_at_alloc +
2941 (scmd_timeout * 2) * HZ)) {
2942 return SCSI_EH_NOT_HANDLED;
2943 }
2944
2945 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2946 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2947 /* FW is busy, throttle IO */
2948 spin_lock_irqsave(instance->host->host_lock, flags);
2949
2950 instance->host->can_queue = instance->throttlequeuedepth;
2951 instance->last_time = jiffies;
2952 instance->flag |= MEGASAS_FW_BUSY;
2953
2954 spin_unlock_irqrestore(instance->host->host_lock, flags);
2955 }
2956 return SCSI_EH_RESET_TIMER;
2957 }
2958
2959 /**
2960 * megasas_dump - This function will print hexdump of provided buffer.
2961 * @buf: Buffer to be dumped
2962 * @sz: Size in bytes
2963 * @format: Different formats of dumping e.g. format=n will
2964 * cause only 'n' 32 bit words to be dumped in a single
2965 * line.
2966 */
2967 inline void
megasas_dump(void * buf,int sz,int format)2968 megasas_dump(void *buf, int sz, int format)
2969 {
2970 int i;
2971 __le32 *buf_loc = (__le32 *)buf;
2972
2973 for (i = 0; i < (sz / sizeof(__le32)); i++) {
2974 if ((i % format) == 0) {
2975 if (i != 0)
2976 printk(KERN_CONT "\n");
2977 printk(KERN_CONT "%08x: ", (i * 4));
2978 }
2979 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2980 }
2981 printk(KERN_CONT "\n");
2982 }
2983
2984 /**
2985 * megasas_dump_reg_set - This function will print hexdump of register set
2986 * @reg_set: Register set to be dumped
2987 */
2988 inline void
megasas_dump_reg_set(void __iomem * reg_set)2989 megasas_dump_reg_set(void __iomem *reg_set)
2990 {
2991 unsigned int i, sz = 256;
2992 u32 __iomem *reg = (u32 __iomem *)reg_set;
2993
2994 for (i = 0; i < (sz / sizeof(u32)); i++)
2995 printk("%08x: %08x\n", (i * 4), readl(®[i]));
2996 }
2997
2998 /**
2999 * megasas_dump_fusion_io - This function will print key details
3000 * of SCSI IO
3001 * @scmd: SCSI command pointer of SCSI IO
3002 */
3003 void
megasas_dump_fusion_io(struct scsi_cmnd * scmd)3004 megasas_dump_fusion_io(struct scsi_cmnd *scmd)
3005 {
3006 struct megasas_cmd_fusion *cmd = megasas_priv(scmd)->cmd_priv;
3007 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3008 struct megasas_instance *instance;
3009
3010 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3011
3012 scmd_printk(KERN_INFO, scmd,
3013 "scmd: (0x%p) retries: 0x%x allowed: 0x%x\n",
3014 scmd, scmd->retries, scmd->allowed);
3015 scsi_print_command(scmd);
3016
3017 if (cmd) {
3018 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
3019 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
3020 scmd_printk(KERN_INFO, scmd,
3021 "RequestFlags:0x%x MSIxIndex:0x%x SMID:0x%x LMID:0x%x DevHandle:0x%x\n",
3022 req_desc->SCSIIO.RequestFlags,
3023 req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
3024 req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
3025
3026 printk(KERN_INFO "IO request frame:\n");
3027 megasas_dump(cmd->io_request,
3028 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
3029 printk(KERN_INFO "Chain frame:\n");
3030 megasas_dump(cmd->sg_frame,
3031 instance->max_chain_frame_sz, 8);
3032 }
3033
3034 }
3035
3036 /*
3037 * megasas_dump_sys_regs - This function will dump system registers through
3038 * sysfs.
3039 * @reg_set: Pointer to System register set.
3040 * @buf: Buffer to which output is to be written.
3041 * @return: Number of bytes written to buffer.
3042 */
3043 static inline ssize_t
megasas_dump_sys_regs(void __iomem * reg_set,char * buf)3044 megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
3045 {
3046 unsigned int i, sz = 256;
3047 int bytes_wrote = 0;
3048 char *loc = (char *)buf;
3049 u32 __iomem *reg = (u32 __iomem *)reg_set;
3050
3051 for (i = 0; i < sz / sizeof(u32); i++) {
3052 bytes_wrote += scnprintf(loc + bytes_wrote,
3053 PAGE_SIZE - bytes_wrote,
3054 "%08x: %08x\n", (i * 4),
3055 readl(®[i]));
3056 }
3057 return bytes_wrote;
3058 }
3059
3060 /**
3061 * megasas_reset_bus_host - Bus & host reset handler entry point
3062 * @scmd: Mid-layer SCSI command
3063 */
megasas_reset_bus_host(struct scsi_cmnd * scmd)3064 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
3065 {
3066 int ret;
3067 struct megasas_instance *instance;
3068
3069 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3070
3071 scmd_printk(KERN_INFO, scmd,
3072 "OCR is requested due to IO timeout!!\n");
3073
3074 scmd_printk(KERN_INFO, scmd,
3075 "SCSI host state: %d SCSI host busy: %d FW outstanding: %d\n",
3076 scmd->device->host->shost_state,
3077 scsi_host_busy(scmd->device->host),
3078 atomic_read(&instance->fw_outstanding));
3079 /*
3080 * First wait for all commands to complete
3081 */
3082 if (instance->adapter_type == MFI_SERIES) {
3083 ret = megasas_generic_reset(scmd);
3084 } else {
3085 megasas_dump_fusion_io(scmd);
3086 ret = megasas_reset_fusion(scmd->device->host,
3087 SCSIIO_TIMEOUT_OCR);
3088 }
3089
3090 return ret;
3091 }
3092
3093 /**
3094 * megasas_task_abort - Issues task abort request to firmware
3095 * (supported only for fusion adapters)
3096 * @scmd: SCSI command pointer
3097 */
megasas_task_abort(struct scsi_cmnd * scmd)3098 static int megasas_task_abort(struct scsi_cmnd *scmd)
3099 {
3100 int ret;
3101 struct megasas_instance *instance;
3102
3103 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3104
3105 if (instance->adapter_type != MFI_SERIES)
3106 ret = megasas_task_abort_fusion(scmd);
3107 else {
3108 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3109 ret = FAILED;
3110 }
3111
3112 return ret;
3113 }
3114
3115 /**
3116 * megasas_reset_target: Issues target reset request to firmware
3117 * (supported only for fusion adapters)
3118 * @scmd: SCSI command pointer
3119 */
megasas_reset_target(struct scsi_cmnd * scmd)3120 static int megasas_reset_target(struct scsi_cmnd *scmd)
3121 {
3122 int ret;
3123 struct megasas_instance *instance;
3124
3125 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3126
3127 if (instance->adapter_type != MFI_SERIES)
3128 ret = megasas_reset_target_fusion(scmd);
3129 else {
3130 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3131 ret = FAILED;
3132 }
3133
3134 return ret;
3135 }
3136
3137 /**
3138 * megasas_bios_param - Returns disk geometry for a disk
3139 * @sdev: device handle
3140 * @bdev: block device
3141 * @capacity: drive capacity
3142 * @geom: geometry parameters
3143 */
3144 static int
megasas_bios_param(struct scsi_device * sdev,struct block_device * bdev,sector_t capacity,int geom[])3145 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
3146 sector_t capacity, int geom[])
3147 {
3148 int heads;
3149 int sectors;
3150 sector_t cylinders;
3151 unsigned long tmp;
3152
3153 /* Default heads (64) & sectors (32) */
3154 heads = 64;
3155 sectors = 32;
3156
3157 tmp = heads * sectors;
3158 cylinders = capacity;
3159
3160 sector_div(cylinders, tmp);
3161
3162 /*
3163 * Handle extended translation size for logical drives > 1Gb
3164 */
3165
3166 if (capacity >= 0x200000) {
3167 heads = 255;
3168 sectors = 63;
3169 tmp = heads*sectors;
3170 cylinders = capacity;
3171 sector_div(cylinders, tmp);
3172 }
3173
3174 geom[0] = heads;
3175 geom[1] = sectors;
3176 geom[2] = cylinders;
3177
3178 return 0;
3179 }
3180
megasas_map_queues(struct Scsi_Host * shost)3181 static void megasas_map_queues(struct Scsi_Host *shost)
3182 {
3183 struct megasas_instance *instance;
3184 int qoff = 0, offset;
3185 struct blk_mq_queue_map *map;
3186
3187 instance = (struct megasas_instance *)shost->hostdata;
3188
3189 if (shost->nr_hw_queues == 1)
3190 return;
3191
3192 offset = instance->low_latency_index_start;
3193
3194 /* Setup Default hctx */
3195 map = &shost->tag_set.map[HCTX_TYPE_DEFAULT];
3196 map->nr_queues = instance->msix_vectors - offset;
3197 map->queue_offset = 0;
3198 blk_mq_map_hw_queues(map, &instance->pdev->dev, offset);
3199 qoff += map->nr_queues;
3200 offset += map->nr_queues;
3201
3202 /* we never use READ queue, so can't cheat blk-mq */
3203 shost->tag_set.map[HCTX_TYPE_READ].nr_queues = 0;
3204
3205 /* Setup Poll hctx */
3206 map = &shost->tag_set.map[HCTX_TYPE_POLL];
3207 map->nr_queues = instance->iopoll_q_count;
3208 if (map->nr_queues) {
3209 /*
3210 * The poll queue(s) doesn't have an IRQ (and hence IRQ
3211 * affinity), so use the regular blk-mq cpu mapping
3212 */
3213 map->queue_offset = qoff;
3214 blk_mq_map_queues(map);
3215 }
3216 }
3217
3218 static void megasas_aen_polling(struct work_struct *work);
3219
3220 /**
3221 * megasas_service_aen - Processes an event notification
3222 * @instance: Adapter soft state
3223 * @cmd: AEN command completed by the ISR
3224 *
3225 * For AEN, driver sends a command down to FW that is held by the FW till an
3226 * event occurs. When an event of interest occurs, FW completes the command
3227 * that it was previously holding.
3228 *
3229 * This routines sends SIGIO signal to processes that have registered with the
3230 * driver for AEN.
3231 */
3232 static void
megasas_service_aen(struct megasas_instance * instance,struct megasas_cmd * cmd)3233 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3234 {
3235 unsigned long flags;
3236
3237 /*
3238 * Don't signal app if it is just an aborted previously registered aen
3239 */
3240 if ((!cmd->abort_aen) && (instance->unload == 0)) {
3241 spin_lock_irqsave(&poll_aen_lock, flags);
3242 megasas_poll_wait_aen = 1;
3243 spin_unlock_irqrestore(&poll_aen_lock, flags);
3244 wake_up(&megasas_poll_wait);
3245 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3246 }
3247 else
3248 cmd->abort_aen = 0;
3249
3250 instance->aen_cmd = NULL;
3251
3252 megasas_return_cmd(instance, cmd);
3253
3254 if ((instance->unload == 0) &&
3255 ((instance->issuepend_done == 1))) {
3256 struct megasas_aen_event *ev;
3257
3258 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3259 if (!ev) {
3260 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3261 } else {
3262 ev->instance = instance;
3263 instance->ev = ev;
3264 INIT_DELAYED_WORK(&ev->hotplug_work,
3265 megasas_aen_polling);
3266 schedule_delayed_work(&ev->hotplug_work, 0);
3267 }
3268 }
3269 }
3270
3271 static ssize_t
fw_crash_buffer_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3272 fw_crash_buffer_store(struct device *cdev,
3273 struct device_attribute *attr, const char *buf, size_t count)
3274 {
3275 struct Scsi_Host *shost = class_to_shost(cdev);
3276 struct megasas_instance *instance =
3277 (struct megasas_instance *) shost->hostdata;
3278 int val = 0;
3279
3280 if (kstrtoint(buf, 0, &val) != 0)
3281 return -EINVAL;
3282
3283 mutex_lock(&instance->crashdump_lock);
3284 instance->fw_crash_buffer_offset = val;
3285 mutex_unlock(&instance->crashdump_lock);
3286 return strlen(buf);
3287 }
3288
3289 static ssize_t
fw_crash_buffer_show(struct device * cdev,struct device_attribute * attr,char * buf)3290 fw_crash_buffer_show(struct device *cdev,
3291 struct device_attribute *attr, char *buf)
3292 {
3293 struct Scsi_Host *shost = class_to_shost(cdev);
3294 struct megasas_instance *instance =
3295 (struct megasas_instance *) shost->hostdata;
3296 u32 size;
3297 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3298 unsigned long chunk_left_bytes;
3299 unsigned long src_addr;
3300 u32 buff_offset;
3301
3302 mutex_lock(&instance->crashdump_lock);
3303 buff_offset = instance->fw_crash_buffer_offset;
3304 if (!instance->crash_dump_buf ||
3305 !((instance->fw_crash_state == AVAILABLE) ||
3306 (instance->fw_crash_state == COPYING))) {
3307 dev_err(&instance->pdev->dev,
3308 "Firmware crash dump is not available\n");
3309 mutex_unlock(&instance->crashdump_lock);
3310 return -EINVAL;
3311 }
3312
3313 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3314 dev_err(&instance->pdev->dev,
3315 "Firmware crash dump offset is out of range\n");
3316 mutex_unlock(&instance->crashdump_lock);
3317 return 0;
3318 }
3319
3320 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3321 chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3322 size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3323 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3324
3325 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3326 (buff_offset % dmachunk);
3327 memcpy(buf, (void *)src_addr, size);
3328 mutex_unlock(&instance->crashdump_lock);
3329
3330 return size;
3331 }
3332
3333 static ssize_t
fw_crash_buffer_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3334 fw_crash_buffer_size_show(struct device *cdev,
3335 struct device_attribute *attr, char *buf)
3336 {
3337 struct Scsi_Host *shost = class_to_shost(cdev);
3338 struct megasas_instance *instance =
3339 (struct megasas_instance *) shost->hostdata;
3340
3341 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3342 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3343 }
3344
3345 static ssize_t
fw_crash_state_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3346 fw_crash_state_store(struct device *cdev,
3347 struct device_attribute *attr, const char *buf, size_t count)
3348 {
3349 struct Scsi_Host *shost = class_to_shost(cdev);
3350 struct megasas_instance *instance =
3351 (struct megasas_instance *) shost->hostdata;
3352 int val = 0;
3353
3354 if (kstrtoint(buf, 0, &val) != 0)
3355 return -EINVAL;
3356
3357 if ((val <= AVAILABLE || val > COPY_ERROR)) {
3358 dev_err(&instance->pdev->dev, "application updates invalid "
3359 "firmware crash state\n");
3360 return -EINVAL;
3361 }
3362
3363 instance->fw_crash_state = val;
3364
3365 if ((val == COPIED) || (val == COPY_ERROR)) {
3366 mutex_lock(&instance->crashdump_lock);
3367 megasas_free_host_crash_buffer(instance);
3368 mutex_unlock(&instance->crashdump_lock);
3369 if (val == COPY_ERROR)
3370 dev_info(&instance->pdev->dev, "application failed to "
3371 "copy Firmware crash dump\n");
3372 else
3373 dev_info(&instance->pdev->dev, "Firmware crash dump "
3374 "copied successfully\n");
3375 }
3376 return strlen(buf);
3377 }
3378
3379 static ssize_t
fw_crash_state_show(struct device * cdev,struct device_attribute * attr,char * buf)3380 fw_crash_state_show(struct device *cdev,
3381 struct device_attribute *attr, char *buf)
3382 {
3383 struct Scsi_Host *shost = class_to_shost(cdev);
3384 struct megasas_instance *instance =
3385 (struct megasas_instance *) shost->hostdata;
3386
3387 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3388 }
3389
3390 static ssize_t
page_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3391 page_size_show(struct device *cdev,
3392 struct device_attribute *attr, char *buf)
3393 {
3394 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3395 }
3396
3397 static ssize_t
ldio_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3398 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3399 char *buf)
3400 {
3401 struct Scsi_Host *shost = class_to_shost(cdev);
3402 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3403
3404 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3405 }
3406
3407 static ssize_t
fw_cmds_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3408 fw_cmds_outstanding_show(struct device *cdev,
3409 struct device_attribute *attr, char *buf)
3410 {
3411 struct Scsi_Host *shost = class_to_shost(cdev);
3412 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3413
3414 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3415 }
3416
3417 static ssize_t
enable_sdev_max_qd_show(struct device * cdev,struct device_attribute * attr,char * buf)3418 enable_sdev_max_qd_show(struct device *cdev,
3419 struct device_attribute *attr, char *buf)
3420 {
3421 struct Scsi_Host *shost = class_to_shost(cdev);
3422 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3423
3424 return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd);
3425 }
3426
3427 static ssize_t
enable_sdev_max_qd_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3428 enable_sdev_max_qd_store(struct device *cdev,
3429 struct device_attribute *attr, const char *buf, size_t count)
3430 {
3431 struct Scsi_Host *shost = class_to_shost(cdev);
3432 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3433 u32 val = 0;
3434 bool is_target_prop;
3435 int ret_target_prop = DCMD_FAILED;
3436 struct scsi_device *sdev;
3437
3438 if (kstrtou32(buf, 0, &val) != 0) {
3439 pr_err("megasas: could not set enable_sdev_max_qd\n");
3440 return -EINVAL;
3441 }
3442
3443 mutex_lock(&instance->reset_mutex);
3444 if (val)
3445 instance->enable_sdev_max_qd = true;
3446 else
3447 instance->enable_sdev_max_qd = false;
3448
3449 shost_for_each_device(sdev, shost) {
3450 ret_target_prop = megasas_get_target_prop(instance, sdev);
3451 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
3452 megasas_set_fw_assisted_qd(sdev, is_target_prop);
3453 }
3454 mutex_unlock(&instance->reset_mutex);
3455
3456 return strlen(buf);
3457 }
3458
3459 static ssize_t
dump_system_regs_show(struct device * cdev,struct device_attribute * attr,char * buf)3460 dump_system_regs_show(struct device *cdev,
3461 struct device_attribute *attr, char *buf)
3462 {
3463 struct Scsi_Host *shost = class_to_shost(cdev);
3464 struct megasas_instance *instance =
3465 (struct megasas_instance *)shost->hostdata;
3466
3467 return megasas_dump_sys_regs(instance->reg_set, buf);
3468 }
3469
3470 static ssize_t
raid_map_id_show(struct device * cdev,struct device_attribute * attr,char * buf)3471 raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3472 char *buf)
3473 {
3474 struct Scsi_Host *shost = class_to_shost(cdev);
3475 struct megasas_instance *instance =
3476 (struct megasas_instance *)shost->hostdata;
3477
3478 return snprintf(buf, PAGE_SIZE, "%ld\n",
3479 (unsigned long)instance->map_id);
3480 }
3481
3482 static DEVICE_ATTR_RW(fw_crash_buffer);
3483 static DEVICE_ATTR_RO(fw_crash_buffer_size);
3484 static DEVICE_ATTR_RW(fw_crash_state);
3485 static DEVICE_ATTR_RO(page_size);
3486 static DEVICE_ATTR_RO(ldio_outstanding);
3487 static DEVICE_ATTR_RO(fw_cmds_outstanding);
3488 static DEVICE_ATTR_RW(enable_sdev_max_qd);
3489 static DEVICE_ATTR_RO(dump_system_regs);
3490 static DEVICE_ATTR_RO(raid_map_id);
3491
3492 static struct attribute *megaraid_host_attrs[] = {
3493 &dev_attr_fw_crash_buffer_size.attr,
3494 &dev_attr_fw_crash_buffer.attr,
3495 &dev_attr_fw_crash_state.attr,
3496 &dev_attr_page_size.attr,
3497 &dev_attr_ldio_outstanding.attr,
3498 &dev_attr_fw_cmds_outstanding.attr,
3499 &dev_attr_enable_sdev_max_qd.attr,
3500 &dev_attr_dump_system_regs.attr,
3501 &dev_attr_raid_map_id.attr,
3502 NULL,
3503 };
3504
3505 ATTRIBUTE_GROUPS(megaraid_host);
3506
3507 /*
3508 * Scsi host template for megaraid_sas driver
3509 */
3510 static const struct scsi_host_template megasas_template = {
3511
3512 .module = THIS_MODULE,
3513 .name = "Avago SAS based MegaRAID driver",
3514 .proc_name = "megaraid_sas",
3515 .sdev_configure = megasas_sdev_configure,
3516 .sdev_init = megasas_sdev_init,
3517 .sdev_destroy = megasas_sdev_destroy,
3518 .queuecommand = megasas_queue_command,
3519 .eh_target_reset_handler = megasas_reset_target,
3520 .eh_abort_handler = megasas_task_abort,
3521 .eh_host_reset_handler = megasas_reset_bus_host,
3522 .eh_timed_out = megasas_reset_timer,
3523 .shost_groups = megaraid_host_groups,
3524 .bios_param = megasas_bios_param,
3525 .map_queues = megasas_map_queues,
3526 .mq_poll = megasas_blk_mq_poll,
3527 .change_queue_depth = scsi_change_queue_depth,
3528 .max_segment_size = 0xffffffff,
3529 .cmd_size = sizeof(struct megasas_cmd_priv),
3530 };
3531
3532 /**
3533 * megasas_complete_int_cmd - Completes an internal command
3534 * @instance: Adapter soft state
3535 * @cmd: Command to be completed
3536 *
3537 * The megasas_issue_blocked_cmd() function waits for a command to complete
3538 * after it issues a command. This function wakes up that waiting routine by
3539 * calling wake_up() on the wait queue.
3540 */
3541 static void
megasas_complete_int_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)3542 megasas_complete_int_cmd(struct megasas_instance *instance,
3543 struct megasas_cmd *cmd)
3544 {
3545 if (cmd->cmd_status_drv == DCMD_INIT)
3546 cmd->cmd_status_drv =
3547 (cmd->frame->io.cmd_status == MFI_STAT_OK) ?
3548 DCMD_SUCCESS : DCMD_FAILED;
3549
3550 wake_up(&instance->int_cmd_wait_q);
3551 }
3552
3553 /**
3554 * megasas_complete_abort - Completes aborting a command
3555 * @instance: Adapter soft state
3556 * @cmd: Cmd that was issued to abort another cmd
3557 *
3558 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3559 * after it issues an abort on a previously issued command. This function
3560 * wakes up all functions waiting on the same wait queue.
3561 */
3562 static void
megasas_complete_abort(struct megasas_instance * instance,struct megasas_cmd * cmd)3563 megasas_complete_abort(struct megasas_instance *instance,
3564 struct megasas_cmd *cmd)
3565 {
3566 if (cmd->sync_cmd) {
3567 cmd->sync_cmd = 0;
3568 cmd->cmd_status_drv = DCMD_SUCCESS;
3569 wake_up(&instance->abort_cmd_wait_q);
3570 }
3571 }
3572
3573 static void
megasas_set_ld_removed_by_fw(struct megasas_instance * instance)3574 megasas_set_ld_removed_by_fw(struct megasas_instance *instance)
3575 {
3576 uint i;
3577
3578 for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) {
3579 if (instance->ld_ids_prev[i] != 0xff &&
3580 instance->ld_ids_from_raidmap[i] == 0xff) {
3581 if (megasas_dbg_lvl & LD_PD_DEBUG)
3582 dev_info(&instance->pdev->dev,
3583 "LD target ID %d removed from RAID map\n", i);
3584 instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED;
3585 }
3586 }
3587 }
3588
3589 /**
3590 * megasas_complete_cmd - Completes a command
3591 * @instance: Adapter soft state
3592 * @cmd: Command to be completed
3593 * @alt_status: If non-zero, use this value as status to
3594 * SCSI mid-layer instead of the value returned
3595 * by the FW. This should be used if caller wants
3596 * an alternate status (as in the case of aborted
3597 * commands)
3598 */
3599 void
megasas_complete_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,u8 alt_status)3600 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3601 u8 alt_status)
3602 {
3603 int exception = 0;
3604 struct megasas_header *hdr = &cmd->frame->hdr;
3605 unsigned long flags;
3606 struct fusion_context *fusion = instance->ctrl_context;
3607 u32 opcode, status;
3608
3609 /* flag for the retry reset */
3610 cmd->retry_for_fw_reset = 0;
3611
3612 if (cmd->scmd)
3613 megasas_priv(cmd->scmd)->cmd_priv = NULL;
3614
3615 switch (hdr->cmd) {
3616 case MFI_CMD_INVALID:
3617 /* Some older 1068 controller FW may keep a pended
3618 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3619 when booting the kdump kernel. Ignore this command to
3620 prevent a kernel panic on shutdown of the kdump kernel. */
3621 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3622 "completed\n");
3623 dev_warn(&instance->pdev->dev, "If you have a controller "
3624 "other than PERC5, please upgrade your firmware\n");
3625 break;
3626 case MFI_CMD_PD_SCSI_IO:
3627 case MFI_CMD_LD_SCSI_IO:
3628
3629 /*
3630 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3631 * issued either through an IO path or an IOCTL path. If it
3632 * was via IOCTL, we will send it to internal completion.
3633 */
3634 if (cmd->sync_cmd) {
3635 cmd->sync_cmd = 0;
3636 megasas_complete_int_cmd(instance, cmd);
3637 break;
3638 }
3639 fallthrough;
3640
3641 case MFI_CMD_LD_READ:
3642 case MFI_CMD_LD_WRITE:
3643
3644 if (alt_status) {
3645 cmd->scmd->result = alt_status << 16;
3646 exception = 1;
3647 }
3648
3649 if (exception) {
3650
3651 atomic_dec(&instance->fw_outstanding);
3652
3653 scsi_dma_unmap(cmd->scmd);
3654 scsi_done(cmd->scmd);
3655 megasas_return_cmd(instance, cmd);
3656
3657 break;
3658 }
3659
3660 switch (hdr->cmd_status) {
3661
3662 case MFI_STAT_OK:
3663 cmd->scmd->result = DID_OK << 16;
3664 break;
3665
3666 case MFI_STAT_SCSI_IO_FAILED:
3667 case MFI_STAT_LD_INIT_IN_PROGRESS:
3668 if (hdr->scsi_status == 0xf0)
3669 cmd->scmd->result = (DID_ERROR << 16) | SAM_STAT_CHECK_CONDITION;
3670 else
3671 cmd->scmd->result = (DID_ERROR << 16) | hdr->scsi_status;
3672 break;
3673
3674 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3675
3676 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3677
3678 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3679 memset(cmd->scmd->sense_buffer, 0,
3680 SCSI_SENSE_BUFFERSIZE);
3681 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3682 hdr->sense_len);
3683 }
3684
3685 break;
3686
3687 case MFI_STAT_LD_OFFLINE:
3688 case MFI_STAT_DEVICE_NOT_FOUND:
3689 cmd->scmd->result = DID_BAD_TARGET << 16;
3690 break;
3691
3692 default:
3693 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3694 hdr->cmd_status);
3695 cmd->scmd->result = DID_ERROR << 16;
3696 break;
3697 }
3698
3699 atomic_dec(&instance->fw_outstanding);
3700
3701 scsi_dma_unmap(cmd->scmd);
3702 scsi_done(cmd->scmd);
3703 megasas_return_cmd(instance, cmd);
3704
3705 break;
3706
3707 case MFI_CMD_SMP:
3708 case MFI_CMD_STP:
3709 case MFI_CMD_NVME:
3710 case MFI_CMD_TOOLBOX:
3711 megasas_complete_int_cmd(instance, cmd);
3712 break;
3713
3714 case MFI_CMD_DCMD:
3715 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3716 /* Check for LD map update */
3717 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3718 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3719 fusion->fast_path_io = 0;
3720 spin_lock_irqsave(instance->host->host_lock, flags);
3721 status = cmd->frame->hdr.cmd_status;
3722 instance->map_update_cmd = NULL;
3723 if (status != MFI_STAT_OK) {
3724 if (status != MFI_STAT_NOT_FOUND)
3725 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3726 cmd->frame->hdr.cmd_status);
3727 else {
3728 megasas_return_cmd(instance, cmd);
3729 spin_unlock_irqrestore(
3730 instance->host->host_lock,
3731 flags);
3732 break;
3733 }
3734 }
3735
3736 megasas_return_cmd(instance, cmd);
3737
3738 /*
3739 * Set fast path IO to ZERO.
3740 * Validate Map will set proper value.
3741 * Meanwhile all IOs will go as LD IO.
3742 */
3743 if (status == MFI_STAT_OK &&
3744 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3745 instance->map_id++;
3746 fusion->fast_path_io = 1;
3747 } else {
3748 fusion->fast_path_io = 0;
3749 }
3750
3751 if (instance->adapter_type >= INVADER_SERIES)
3752 megasas_set_ld_removed_by_fw(instance);
3753
3754 megasas_sync_map_info(instance);
3755 spin_unlock_irqrestore(instance->host->host_lock,
3756 flags);
3757
3758 break;
3759 }
3760 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3761 opcode == MR_DCMD_CTRL_EVENT_GET) {
3762 spin_lock_irqsave(&poll_aen_lock, flags);
3763 megasas_poll_wait_aen = 0;
3764 spin_unlock_irqrestore(&poll_aen_lock, flags);
3765 }
3766
3767 /* FW has an updated PD sequence */
3768 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3769 (cmd->frame->dcmd.mbox.b[0] == 1)) {
3770
3771 spin_lock_irqsave(instance->host->host_lock, flags);
3772 status = cmd->frame->hdr.cmd_status;
3773 instance->jbod_seq_cmd = NULL;
3774 megasas_return_cmd(instance, cmd);
3775
3776 if (status == MFI_STAT_OK) {
3777 instance->pd_seq_map_id++;
3778 /* Re-register a pd sync seq num cmd */
3779 if (megasas_sync_pd_seq_num(instance, true))
3780 instance->use_seqnum_jbod_fp = false;
3781 } else
3782 instance->use_seqnum_jbod_fp = false;
3783
3784 spin_unlock_irqrestore(instance->host->host_lock, flags);
3785 break;
3786 }
3787
3788 /*
3789 * See if got an event notification
3790 */
3791 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3792 megasas_service_aen(instance, cmd);
3793 else
3794 megasas_complete_int_cmd(instance, cmd);
3795
3796 break;
3797
3798 case MFI_CMD_ABORT:
3799 /*
3800 * Cmd issued to abort another cmd returned
3801 */
3802 megasas_complete_abort(instance, cmd);
3803 break;
3804
3805 default:
3806 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3807 hdr->cmd);
3808 megasas_complete_int_cmd(instance, cmd);
3809 break;
3810 }
3811 }
3812
3813 /**
3814 * megasas_issue_pending_cmds_again - issue all pending cmds
3815 * in FW again because of the fw reset
3816 * @instance: Adapter soft state
3817 */
3818 static inline void
megasas_issue_pending_cmds_again(struct megasas_instance * instance)3819 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3820 {
3821 struct megasas_cmd *cmd;
3822 struct list_head clist_local;
3823 union megasas_evt_class_locale class_locale;
3824 unsigned long flags;
3825 u32 seq_num;
3826
3827 INIT_LIST_HEAD(&clist_local);
3828 spin_lock_irqsave(&instance->hba_lock, flags);
3829 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3830 spin_unlock_irqrestore(&instance->hba_lock, flags);
3831
3832 while (!list_empty(&clist_local)) {
3833 cmd = list_entry((&clist_local)->next,
3834 struct megasas_cmd, list);
3835 list_del_init(&cmd->list);
3836
3837 if (cmd->sync_cmd || cmd->scmd) {
3838 dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3839 "detected to be pending while HBA reset\n",
3840 cmd, cmd->scmd, cmd->sync_cmd);
3841
3842 cmd->retry_for_fw_reset++;
3843
3844 if (cmd->retry_for_fw_reset == 3) {
3845 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3846 "was tried multiple times during reset."
3847 "Shutting down the HBA\n",
3848 cmd, cmd->scmd, cmd->sync_cmd);
3849 instance->instancet->disable_intr(instance);
3850 atomic_set(&instance->fw_reset_no_pci_access, 1);
3851 megaraid_sas_kill_hba(instance);
3852 return;
3853 }
3854 }
3855
3856 if (cmd->sync_cmd == 1) {
3857 if (cmd->scmd) {
3858 dev_notice(&instance->pdev->dev, "unexpected"
3859 "cmd attached to internal command!\n");
3860 }
3861 dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3862 "on the internal reset queue,"
3863 "issue it again.\n", cmd);
3864 cmd->cmd_status_drv = DCMD_INIT;
3865 instance->instancet->fire_cmd(instance,
3866 cmd->frame_phys_addr,
3867 0, instance->reg_set);
3868 } else if (cmd->scmd) {
3869 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3870 "detected on the internal queue, issue again.\n",
3871 cmd, cmd->scmd->cmnd[0]);
3872
3873 atomic_inc(&instance->fw_outstanding);
3874 instance->instancet->fire_cmd(instance,
3875 cmd->frame_phys_addr,
3876 cmd->frame_count-1, instance->reg_set);
3877 } else {
3878 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3879 "internal reset defer list while re-issue!!\n",
3880 cmd);
3881 }
3882 }
3883
3884 if (instance->aen_cmd) {
3885 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3886 megasas_return_cmd(instance, instance->aen_cmd);
3887
3888 instance->aen_cmd = NULL;
3889 }
3890
3891 /*
3892 * Initiate AEN (Asynchronous Event Notification)
3893 */
3894 seq_num = instance->last_seq_num;
3895 class_locale.members.reserved = 0;
3896 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3897 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3898
3899 megasas_register_aen(instance, seq_num, class_locale.word);
3900 }
3901
3902 /*
3903 * Move the internal reset pending commands to a deferred queue.
3904 *
3905 * We move the commands pending at internal reset time to a
3906 * pending queue. This queue would be flushed after successful
3907 * completion of the internal reset sequence. if the internal reset
3908 * did not complete in time, the kernel reset handler would flush
3909 * these commands.
3910 */
3911 static void
megasas_internal_reset_defer_cmds(struct megasas_instance * instance)3912 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3913 {
3914 struct megasas_cmd *cmd;
3915 int i;
3916 u16 max_cmd = instance->max_fw_cmds;
3917 u32 defer_index;
3918 unsigned long flags;
3919
3920 defer_index = 0;
3921 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3922 for (i = 0; i < max_cmd; i++) {
3923 cmd = instance->cmd_list[i];
3924 if (cmd->sync_cmd == 1 || cmd->scmd) {
3925 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3926 "on the defer queue as internal\n",
3927 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3928
3929 if (!list_empty(&cmd->list)) {
3930 dev_notice(&instance->pdev->dev, "ERROR while"
3931 " moving this cmd:%p, %d %p, it was"
3932 "discovered on some list?\n",
3933 cmd, cmd->sync_cmd, cmd->scmd);
3934
3935 list_del_init(&cmd->list);
3936 }
3937 defer_index++;
3938 list_add_tail(&cmd->list,
3939 &instance->internal_reset_pending_q);
3940 }
3941 }
3942 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3943 }
3944
3945
3946 static void
process_fw_state_change_wq(struct work_struct * work)3947 process_fw_state_change_wq(struct work_struct *work)
3948 {
3949 struct megasas_instance *instance =
3950 container_of(work, struct megasas_instance, work_init);
3951 u32 wait;
3952 unsigned long flags;
3953
3954 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3955 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3956 atomic_read(&instance->adprecovery));
3957 return ;
3958 }
3959
3960 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3961 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3962 "state, restarting it...\n");
3963
3964 instance->instancet->disable_intr(instance);
3965 atomic_set(&instance->fw_outstanding, 0);
3966
3967 atomic_set(&instance->fw_reset_no_pci_access, 1);
3968 instance->instancet->adp_reset(instance, instance->reg_set);
3969 atomic_set(&instance->fw_reset_no_pci_access, 0);
3970
3971 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3972 "initiating next stage...\n");
3973
3974 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3975 "state 2 starting...\n");
3976
3977 /* waiting for about 20 second before start the second init */
3978 for (wait = 0; wait < 30; wait++) {
3979 msleep(1000);
3980 }
3981
3982 if (megasas_transition_to_ready(instance, 1)) {
3983 dev_notice(&instance->pdev->dev, "adapter not ready\n");
3984
3985 atomic_set(&instance->fw_reset_no_pci_access, 1);
3986 megaraid_sas_kill_hba(instance);
3987 return ;
3988 }
3989
3990 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3991 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3992 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3993 ) {
3994 *instance->consumer = *instance->producer;
3995 } else {
3996 *instance->consumer = 0;
3997 *instance->producer = 0;
3998 }
3999
4000 megasas_issue_init_mfi(instance);
4001
4002 spin_lock_irqsave(&instance->hba_lock, flags);
4003 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4004 spin_unlock_irqrestore(&instance->hba_lock, flags);
4005 instance->instancet->enable_intr(instance);
4006
4007 megasas_issue_pending_cmds_again(instance);
4008 instance->issuepend_done = 1;
4009 }
4010 }
4011
4012 /**
4013 * megasas_deplete_reply_queue - Processes all completed commands
4014 * @instance: Adapter soft state
4015 * @alt_status: Alternate status to be returned to
4016 * SCSI mid-layer instead of the status
4017 * returned by the FW
4018 * Note: this must be called with hba lock held
4019 */
4020 static int
megasas_deplete_reply_queue(struct megasas_instance * instance,u8 alt_status)4021 megasas_deplete_reply_queue(struct megasas_instance *instance,
4022 u8 alt_status)
4023 {
4024 u32 mfiStatus;
4025 u32 fw_state;
4026
4027 if (instance->instancet->check_reset(instance, instance->reg_set) == 1)
4028 return IRQ_HANDLED;
4029
4030 mfiStatus = instance->instancet->clear_intr(instance);
4031 if (mfiStatus == 0) {
4032 /* Hardware may not set outbound_intr_status in MSI-X mode */
4033 if (!instance->msix_vectors)
4034 return IRQ_NONE;
4035 }
4036
4037 instance->mfiStatus = mfiStatus;
4038
4039 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
4040 fw_state = instance->instancet->read_fw_status_reg(
4041 instance) & MFI_STATE_MASK;
4042
4043 if (fw_state != MFI_STATE_FAULT) {
4044 dev_notice(&instance->pdev->dev, "fw state:%x\n",
4045 fw_state);
4046 }
4047
4048 if ((fw_state == MFI_STATE_FAULT) &&
4049 (instance->disableOnlineCtrlReset == 0)) {
4050 dev_notice(&instance->pdev->dev, "wait adp restart\n");
4051
4052 if ((instance->pdev->device ==
4053 PCI_DEVICE_ID_LSI_SAS1064R) ||
4054 (instance->pdev->device ==
4055 PCI_DEVICE_ID_DELL_PERC5) ||
4056 (instance->pdev->device ==
4057 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
4058
4059 *instance->consumer =
4060 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
4061 }
4062
4063
4064 instance->instancet->disable_intr(instance);
4065 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4066 instance->issuepend_done = 0;
4067
4068 atomic_set(&instance->fw_outstanding, 0);
4069 megasas_internal_reset_defer_cmds(instance);
4070
4071 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
4072 fw_state, atomic_read(&instance->adprecovery));
4073
4074 schedule_work(&instance->work_init);
4075 return IRQ_HANDLED;
4076
4077 } else {
4078 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
4079 fw_state, instance->disableOnlineCtrlReset);
4080 }
4081 }
4082
4083 tasklet_schedule(&instance->isr_tasklet);
4084 return IRQ_HANDLED;
4085 }
4086
4087 /**
4088 * megasas_isr - isr entry point
4089 * @irq: IRQ number
4090 * @devp: IRQ context address
4091 */
megasas_isr(int irq,void * devp)4092 static irqreturn_t megasas_isr(int irq, void *devp)
4093 {
4094 struct megasas_irq_context *irq_context = devp;
4095 struct megasas_instance *instance = irq_context->instance;
4096 unsigned long flags;
4097 irqreturn_t rc;
4098
4099 if (atomic_read(&instance->fw_reset_no_pci_access))
4100 return IRQ_HANDLED;
4101
4102 spin_lock_irqsave(&instance->hba_lock, flags);
4103 rc = megasas_deplete_reply_queue(instance, DID_OK);
4104 spin_unlock_irqrestore(&instance->hba_lock, flags);
4105
4106 return rc;
4107 }
4108
4109 /**
4110 * megasas_transition_to_ready - Move the FW to READY state
4111 * @instance: Adapter soft state
4112 * @ocr: Adapter reset state
4113 *
4114 * During the initialization, FW passes can potentially be in any one of
4115 * several possible states. If the FW in operational, waiting-for-handshake
4116 * states, driver must take steps to bring it to ready state. Otherwise, it
4117 * has to wait for the ready state.
4118 */
4119 int
megasas_transition_to_ready(struct megasas_instance * instance,int ocr)4120 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
4121 {
4122 int i;
4123 u8 max_wait;
4124 u32 fw_state;
4125 u32 abs_state, curr_abs_state;
4126
4127 abs_state = instance->instancet->read_fw_status_reg(instance);
4128 fw_state = abs_state & MFI_STATE_MASK;
4129
4130 if (fw_state != MFI_STATE_READY)
4131 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
4132 " state\n");
4133
4134 while (fw_state != MFI_STATE_READY) {
4135
4136 switch (fw_state) {
4137
4138 case MFI_STATE_FAULT:
4139 dev_printk(KERN_ERR, &instance->pdev->dev,
4140 "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
4141 abs_state & MFI_STATE_FAULT_CODE,
4142 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4143 if (ocr) {
4144 max_wait = MEGASAS_RESET_WAIT_TIME;
4145 break;
4146 } else {
4147 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4148 megasas_dump_reg_set(instance->reg_set);
4149 return -ENODEV;
4150 }
4151
4152 case MFI_STATE_WAIT_HANDSHAKE:
4153 /*
4154 * Set the CLR bit in inbound doorbell
4155 */
4156 if ((instance->pdev->device ==
4157 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4158 (instance->pdev->device ==
4159 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4160 (instance->adapter_type != MFI_SERIES))
4161 writel(
4162 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4163 &instance->reg_set->doorbell);
4164 else
4165 writel(
4166 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4167 &instance->reg_set->inbound_doorbell);
4168
4169 max_wait = MEGASAS_RESET_WAIT_TIME;
4170 break;
4171
4172 case MFI_STATE_BOOT_MESSAGE_PENDING:
4173 if ((instance->pdev->device ==
4174 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4175 (instance->pdev->device ==
4176 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4177 (instance->adapter_type != MFI_SERIES))
4178 writel(MFI_INIT_HOTPLUG,
4179 &instance->reg_set->doorbell);
4180 else
4181 writel(MFI_INIT_HOTPLUG,
4182 &instance->reg_set->inbound_doorbell);
4183
4184 max_wait = MEGASAS_RESET_WAIT_TIME;
4185 break;
4186
4187 case MFI_STATE_OPERATIONAL:
4188 /*
4189 * Bring it to READY state; assuming max wait 10 secs
4190 */
4191 instance->instancet->disable_intr(instance);
4192 if ((instance->pdev->device ==
4193 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4194 (instance->pdev->device ==
4195 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4196 (instance->adapter_type != MFI_SERIES)) {
4197 writel(MFI_RESET_FLAGS,
4198 &instance->reg_set->doorbell);
4199
4200 if (instance->adapter_type != MFI_SERIES) {
4201 for (i = 0; i < (10 * 1000); i += 20) {
4202 if (megasas_readl(
4203 instance,
4204 &instance->
4205 reg_set->
4206 doorbell) & 1)
4207 msleep(20);
4208 else
4209 break;
4210 }
4211 }
4212 } else
4213 writel(MFI_RESET_FLAGS,
4214 &instance->reg_set->inbound_doorbell);
4215
4216 max_wait = MEGASAS_RESET_WAIT_TIME;
4217 break;
4218
4219 case MFI_STATE_UNDEFINED:
4220 /*
4221 * This state should not last for more than 2 seconds
4222 */
4223 max_wait = MEGASAS_RESET_WAIT_TIME;
4224 break;
4225
4226 case MFI_STATE_BB_INIT:
4227 max_wait = MEGASAS_RESET_WAIT_TIME;
4228 break;
4229
4230 case MFI_STATE_FW_INIT:
4231 max_wait = MEGASAS_RESET_WAIT_TIME;
4232 break;
4233
4234 case MFI_STATE_FW_INIT_2:
4235 max_wait = MEGASAS_RESET_WAIT_TIME;
4236 break;
4237
4238 case MFI_STATE_DEVICE_SCAN:
4239 max_wait = MEGASAS_RESET_WAIT_TIME;
4240 break;
4241
4242 case MFI_STATE_FLUSH_CACHE:
4243 max_wait = MEGASAS_RESET_WAIT_TIME;
4244 break;
4245
4246 default:
4247 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4248 fw_state);
4249 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4250 megasas_dump_reg_set(instance->reg_set);
4251 return -ENODEV;
4252 }
4253
4254 /*
4255 * The cur_state should not last for more than max_wait secs
4256 */
4257 for (i = 0; i < max_wait * 50; i++) {
4258 curr_abs_state = instance->instancet->
4259 read_fw_status_reg(instance);
4260
4261 if (abs_state == curr_abs_state) {
4262 msleep(20);
4263 } else
4264 break;
4265 }
4266
4267 /*
4268 * Return error if fw_state hasn't changed after max_wait
4269 */
4270 if (curr_abs_state == abs_state) {
4271 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4272 "in %d secs\n", fw_state, max_wait);
4273 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4274 megasas_dump_reg_set(instance->reg_set);
4275 return -ENODEV;
4276 }
4277
4278 abs_state = curr_abs_state;
4279 fw_state = curr_abs_state & MFI_STATE_MASK;
4280 }
4281 dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4282
4283 return 0;
4284 }
4285
4286 /**
4287 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
4288 * @instance: Adapter soft state
4289 */
megasas_teardown_frame_pool(struct megasas_instance * instance)4290 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4291 {
4292 int i;
4293 u16 max_cmd = instance->max_mfi_cmds;
4294 struct megasas_cmd *cmd;
4295
4296 if (!instance->frame_dma_pool)
4297 return;
4298
4299 /*
4300 * Return all frames to pool
4301 */
4302 for (i = 0; i < max_cmd; i++) {
4303
4304 cmd = instance->cmd_list[i];
4305
4306 if (cmd->frame)
4307 dma_pool_free(instance->frame_dma_pool, cmd->frame,
4308 cmd->frame_phys_addr);
4309
4310 if (cmd->sense)
4311 dma_pool_free(instance->sense_dma_pool, cmd->sense,
4312 cmd->sense_phys_addr);
4313 }
4314
4315 /*
4316 * Now destroy the pool itself
4317 */
4318 dma_pool_destroy(instance->frame_dma_pool);
4319 dma_pool_destroy(instance->sense_dma_pool);
4320
4321 instance->frame_dma_pool = NULL;
4322 instance->sense_dma_pool = NULL;
4323 }
4324
4325 /**
4326 * megasas_create_frame_pool - Creates DMA pool for cmd frames
4327 * @instance: Adapter soft state
4328 *
4329 * Each command packet has an embedded DMA memory buffer that is used for
4330 * filling MFI frame and the SG list that immediately follows the frame. This
4331 * function creates those DMA memory buffers for each command packet by using
4332 * PCI pool facility.
4333 */
megasas_create_frame_pool(struct megasas_instance * instance)4334 static int megasas_create_frame_pool(struct megasas_instance *instance)
4335 {
4336 int i;
4337 u16 max_cmd;
4338 u32 frame_count;
4339 struct megasas_cmd *cmd;
4340
4341 max_cmd = instance->max_mfi_cmds;
4342
4343 /*
4344 * For MFI controllers.
4345 * max_num_sge = 60
4346 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
4347 * Total 960 byte (15 MFI frame of 64 byte)
4348 *
4349 * Fusion adapter require only 3 extra frame.
4350 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4351 * max_sge_sz = 12 byte (sizeof megasas_sge64)
4352 * Total 192 byte (3 MFI frame of 64 byte)
4353 */
4354 frame_count = (instance->adapter_type == MFI_SERIES) ?
4355 (15 + 1) : (3 + 1);
4356 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4357 /*
4358 * Use DMA pool facility provided by PCI layer
4359 */
4360 instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4361 &instance->pdev->dev,
4362 instance->mfi_frame_size, 256, 0);
4363
4364 if (!instance->frame_dma_pool) {
4365 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4366 return -ENOMEM;
4367 }
4368
4369 instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4370 &instance->pdev->dev, 128,
4371 4, 0);
4372
4373 if (!instance->sense_dma_pool) {
4374 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4375
4376 dma_pool_destroy(instance->frame_dma_pool);
4377 instance->frame_dma_pool = NULL;
4378
4379 return -ENOMEM;
4380 }
4381
4382 /*
4383 * Allocate and attach a frame to each of the commands in cmd_list.
4384 * By making cmd->index as the context instead of the &cmd, we can
4385 * always use 32bit context regardless of the architecture
4386 */
4387 for (i = 0; i < max_cmd; i++) {
4388
4389 cmd = instance->cmd_list[i];
4390
4391 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4392 GFP_KERNEL, &cmd->frame_phys_addr);
4393
4394 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4395 GFP_KERNEL, &cmd->sense_phys_addr);
4396
4397 /*
4398 * megasas_teardown_frame_pool() takes care of freeing
4399 * whatever has been allocated
4400 */
4401 if (!cmd->frame || !cmd->sense) {
4402 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4403 megasas_teardown_frame_pool(instance);
4404 return -ENOMEM;
4405 }
4406
4407 cmd->frame->io.context = cpu_to_le32(cmd->index);
4408 cmd->frame->io.pad_0 = 0;
4409 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4410 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4411 }
4412
4413 return 0;
4414 }
4415
4416 /**
4417 * megasas_free_cmds - Free all the cmds in the free cmd pool
4418 * @instance: Adapter soft state
4419 */
megasas_free_cmds(struct megasas_instance * instance)4420 void megasas_free_cmds(struct megasas_instance *instance)
4421 {
4422 int i;
4423
4424 /* First free the MFI frame pool */
4425 megasas_teardown_frame_pool(instance);
4426
4427 /* Free all the commands in the cmd_list */
4428 for (i = 0; i < instance->max_mfi_cmds; i++)
4429
4430 kfree(instance->cmd_list[i]);
4431
4432 /* Free the cmd_list buffer itself */
4433 kfree(instance->cmd_list);
4434 instance->cmd_list = NULL;
4435
4436 INIT_LIST_HEAD(&instance->cmd_pool);
4437 }
4438
4439 /**
4440 * megasas_alloc_cmds - Allocates the command packets
4441 * @instance: Adapter soft state
4442 *
4443 * Each command that is issued to the FW, whether IO commands from the OS or
4444 * internal commands like IOCTLs, are wrapped in local data structure called
4445 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4446 * the FW.
4447 *
4448 * Each frame has a 32-bit field called context (tag). This context is used
4449 * to get back the megasas_cmd from the frame when a frame gets completed in
4450 * the ISR. Typically the address of the megasas_cmd itself would be used as
4451 * the context. But we wanted to keep the differences between 32 and 64 bit
4452 * systems to the mininum. We always use 32 bit integers for the context. In
4453 * this driver, the 32 bit values are the indices into an array cmd_list.
4454 * This array is used only to look up the megasas_cmd given the context. The
4455 * free commands themselves are maintained in a linked list called cmd_pool.
4456 */
megasas_alloc_cmds(struct megasas_instance * instance)4457 int megasas_alloc_cmds(struct megasas_instance *instance)
4458 {
4459 int i;
4460 int j;
4461 u16 max_cmd;
4462 struct megasas_cmd *cmd;
4463
4464 max_cmd = instance->max_mfi_cmds;
4465
4466 /*
4467 * instance->cmd_list is an array of struct megasas_cmd pointers.
4468 * Allocate the dynamic array first and then allocate individual
4469 * commands.
4470 */
4471 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4472
4473 if (!instance->cmd_list) {
4474 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4475 return -ENOMEM;
4476 }
4477
4478 for (i = 0; i < max_cmd; i++) {
4479 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4480 GFP_KERNEL);
4481
4482 if (!instance->cmd_list[i]) {
4483
4484 for (j = 0; j < i; j++)
4485 kfree(instance->cmd_list[j]);
4486
4487 kfree(instance->cmd_list);
4488 instance->cmd_list = NULL;
4489
4490 return -ENOMEM;
4491 }
4492 }
4493
4494 for (i = 0; i < max_cmd; i++) {
4495 cmd = instance->cmd_list[i];
4496 memset(cmd, 0, sizeof(struct megasas_cmd));
4497 cmd->index = i;
4498 cmd->scmd = NULL;
4499 cmd->instance = instance;
4500
4501 list_add_tail(&cmd->list, &instance->cmd_pool);
4502 }
4503
4504 /*
4505 * Create a frame pool and assign one frame to each cmd
4506 */
4507 if (megasas_create_frame_pool(instance)) {
4508 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4509 megasas_free_cmds(instance);
4510 return -ENOMEM;
4511 }
4512
4513 return 0;
4514 }
4515
4516 /*
4517 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state.
4518 * @instance: Adapter soft state
4519 *
4520 * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4521 * or FW is not under OCR.
4522 */
4523 inline int
dcmd_timeout_ocr_possible(struct megasas_instance * instance)4524 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4525
4526 if (instance->adapter_type == MFI_SERIES)
4527 return KILL_ADAPTER;
4528 else if (instance->unload ||
4529 test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE,
4530 &instance->reset_flags))
4531 return IGNORE_TIMEOUT;
4532 else
4533 return INITIATE_OCR;
4534 }
4535
4536 static void
megasas_get_pd_info(struct megasas_instance * instance,struct scsi_device * sdev)4537 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4538 {
4539 int ret;
4540 struct megasas_cmd *cmd;
4541 struct megasas_dcmd_frame *dcmd;
4542
4543 struct MR_PRIV_DEVICE *mr_device_priv_data;
4544 u16 device_id = 0;
4545
4546 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4547 cmd = megasas_get_cmd(instance);
4548
4549 if (!cmd) {
4550 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4551 return;
4552 }
4553
4554 dcmd = &cmd->frame->dcmd;
4555
4556 memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4557 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4558
4559 dcmd->mbox.s[0] = cpu_to_le16(device_id);
4560 dcmd->cmd = MFI_CMD_DCMD;
4561 dcmd->cmd_status = 0xFF;
4562 dcmd->sge_count = 1;
4563 dcmd->flags = MFI_FRAME_DIR_READ;
4564 dcmd->timeout = 0;
4565 dcmd->pad_0 = 0;
4566 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4567 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4568
4569 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4570 sizeof(struct MR_PD_INFO));
4571
4572 if ((instance->adapter_type != MFI_SERIES) &&
4573 !instance->mask_interrupts)
4574 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4575 else
4576 ret = megasas_issue_polled(instance, cmd);
4577
4578 switch (ret) {
4579 case DCMD_SUCCESS:
4580 mr_device_priv_data = sdev->hostdata;
4581 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4582 mr_device_priv_data->interface_type =
4583 instance->pd_info->state.ddf.pdType.intf;
4584 break;
4585
4586 case DCMD_TIMEOUT:
4587
4588 switch (dcmd_timeout_ocr_possible(instance)) {
4589 case INITIATE_OCR:
4590 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4591 mutex_unlock(&instance->reset_mutex);
4592 megasas_reset_fusion(instance->host,
4593 MFI_IO_TIMEOUT_OCR);
4594 mutex_lock(&instance->reset_mutex);
4595 break;
4596 case KILL_ADAPTER:
4597 megaraid_sas_kill_hba(instance);
4598 break;
4599 case IGNORE_TIMEOUT:
4600 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4601 __func__, __LINE__);
4602 break;
4603 }
4604
4605 break;
4606 }
4607
4608 if (ret != DCMD_TIMEOUT)
4609 megasas_return_cmd(instance, cmd);
4610
4611 return;
4612 }
4613 /*
4614 * megasas_get_pd_list_info - Returns FW's pd_list structure
4615 * @instance: Adapter soft state
4616 * @pd_list: pd_list structure
4617 *
4618 * Issues an internal command (DCMD) to get the FW's controller PD
4619 * list structure. This information is mainly used to find out SYSTEM
4620 * supported by the FW.
4621 */
4622 static int
megasas_get_pd_list(struct megasas_instance * instance)4623 megasas_get_pd_list(struct megasas_instance *instance)
4624 {
4625 int ret = 0, pd_index = 0;
4626 struct megasas_cmd *cmd;
4627 struct megasas_dcmd_frame *dcmd;
4628 struct MR_PD_LIST *ci;
4629 struct MR_PD_ADDRESS *pd_addr;
4630
4631 if (instance->pd_list_not_supported) {
4632 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4633 "not supported by firmware\n");
4634 return ret;
4635 }
4636
4637 ci = instance->pd_list_buf;
4638
4639 cmd = megasas_get_cmd(instance);
4640
4641 if (!cmd) {
4642 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4643 return -ENOMEM;
4644 }
4645
4646 dcmd = &cmd->frame->dcmd;
4647
4648 memset(ci, 0, sizeof(*ci));
4649 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4650
4651 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4652 dcmd->mbox.b[1] = 0;
4653 dcmd->cmd = MFI_CMD_DCMD;
4654 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4655 dcmd->sge_count = 1;
4656 dcmd->flags = MFI_FRAME_DIR_READ;
4657 dcmd->timeout = 0;
4658 dcmd->pad_0 = 0;
4659 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4660 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4661
4662 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4663 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4664
4665 if ((instance->adapter_type != MFI_SERIES) &&
4666 !instance->mask_interrupts)
4667 ret = megasas_issue_blocked_cmd(instance, cmd,
4668 MFI_IO_TIMEOUT_SECS);
4669 else
4670 ret = megasas_issue_polled(instance, cmd);
4671
4672 switch (ret) {
4673 case DCMD_FAILED:
4674 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4675 "failed/not supported by firmware\n");
4676
4677 if (instance->adapter_type != MFI_SERIES)
4678 megaraid_sas_kill_hba(instance);
4679 else
4680 instance->pd_list_not_supported = 1;
4681 break;
4682 case DCMD_TIMEOUT:
4683
4684 switch (dcmd_timeout_ocr_possible(instance)) {
4685 case INITIATE_OCR:
4686 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4687 /*
4688 * DCMD failed from AEN path.
4689 * AEN path already hold reset_mutex to avoid PCI access
4690 * while OCR is in progress.
4691 */
4692 mutex_unlock(&instance->reset_mutex);
4693 megasas_reset_fusion(instance->host,
4694 MFI_IO_TIMEOUT_OCR);
4695 mutex_lock(&instance->reset_mutex);
4696 break;
4697 case KILL_ADAPTER:
4698 megaraid_sas_kill_hba(instance);
4699 break;
4700 case IGNORE_TIMEOUT:
4701 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4702 __func__, __LINE__);
4703 break;
4704 }
4705
4706 break;
4707
4708 case DCMD_SUCCESS:
4709 pd_addr = ci->addr;
4710 if (megasas_dbg_lvl & LD_PD_DEBUG)
4711 dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n",
4712 __func__, le32_to_cpu(ci->count));
4713
4714 if ((le32_to_cpu(ci->count) >
4715 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4716 break;
4717
4718 memset(instance->local_pd_list, 0,
4719 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4720
4721 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4722 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
4723 le16_to_cpu(pd_addr->deviceId);
4724 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
4725 pd_addr->scsiDevType;
4726 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
4727 MR_PD_STATE_SYSTEM;
4728 if (megasas_dbg_lvl & LD_PD_DEBUG)
4729 dev_info(&instance->pdev->dev,
4730 "PD%d: targetID: 0x%03x deviceType:0x%x\n",
4731 pd_index, le16_to_cpu(pd_addr->deviceId),
4732 pd_addr->scsiDevType);
4733 pd_addr++;
4734 }
4735
4736 memcpy(instance->pd_list, instance->local_pd_list,
4737 sizeof(instance->pd_list));
4738 break;
4739
4740 }
4741
4742 if (ret != DCMD_TIMEOUT)
4743 megasas_return_cmd(instance, cmd);
4744
4745 return ret;
4746 }
4747
4748 /*
4749 * megasas_get_ld_list_info - Returns FW's ld_list structure
4750 * @instance: Adapter soft state
4751 * @ld_list: ld_list structure
4752 *
4753 * Issues an internal command (DCMD) to get the FW's controller PD
4754 * list structure. This information is mainly used to find out SYSTEM
4755 * supported by the FW.
4756 */
4757 static int
megasas_get_ld_list(struct megasas_instance * instance)4758 megasas_get_ld_list(struct megasas_instance *instance)
4759 {
4760 int ret = 0, ld_index = 0, ids = 0;
4761 struct megasas_cmd *cmd;
4762 struct megasas_dcmd_frame *dcmd;
4763 struct MR_LD_LIST *ci;
4764 dma_addr_t ci_h = 0;
4765 u32 ld_count;
4766
4767 ci = instance->ld_list_buf;
4768 ci_h = instance->ld_list_buf_h;
4769
4770 cmd = megasas_get_cmd(instance);
4771
4772 if (!cmd) {
4773 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4774 return -ENOMEM;
4775 }
4776
4777 dcmd = &cmd->frame->dcmd;
4778
4779 memset(ci, 0, sizeof(*ci));
4780 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4781
4782 if (instance->supportmax256vd)
4783 dcmd->mbox.b[0] = 1;
4784 dcmd->cmd = MFI_CMD_DCMD;
4785 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4786 dcmd->sge_count = 1;
4787 dcmd->flags = MFI_FRAME_DIR_READ;
4788 dcmd->timeout = 0;
4789 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4790 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4791 dcmd->pad_0 = 0;
4792
4793 megasas_set_dma_settings(instance, dcmd, ci_h,
4794 sizeof(struct MR_LD_LIST));
4795
4796 if ((instance->adapter_type != MFI_SERIES) &&
4797 !instance->mask_interrupts)
4798 ret = megasas_issue_blocked_cmd(instance, cmd,
4799 MFI_IO_TIMEOUT_SECS);
4800 else
4801 ret = megasas_issue_polled(instance, cmd);
4802
4803 ld_count = le32_to_cpu(ci->ldCount);
4804
4805 switch (ret) {
4806 case DCMD_FAILED:
4807 megaraid_sas_kill_hba(instance);
4808 break;
4809 case DCMD_TIMEOUT:
4810
4811 switch (dcmd_timeout_ocr_possible(instance)) {
4812 case INITIATE_OCR:
4813 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4814 /*
4815 * DCMD failed from AEN path.
4816 * AEN path already hold reset_mutex to avoid PCI access
4817 * while OCR is in progress.
4818 */
4819 mutex_unlock(&instance->reset_mutex);
4820 megasas_reset_fusion(instance->host,
4821 MFI_IO_TIMEOUT_OCR);
4822 mutex_lock(&instance->reset_mutex);
4823 break;
4824 case KILL_ADAPTER:
4825 megaraid_sas_kill_hba(instance);
4826 break;
4827 case IGNORE_TIMEOUT:
4828 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4829 __func__, __LINE__);
4830 break;
4831 }
4832
4833 break;
4834
4835 case DCMD_SUCCESS:
4836 if (megasas_dbg_lvl & LD_PD_DEBUG)
4837 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4838 __func__, ld_count);
4839
4840 if (ld_count > instance->fw_supported_vd_count)
4841 break;
4842
4843 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4844
4845 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4846 if (ci->ldList[ld_index].state != 0) {
4847 ids = ci->ldList[ld_index].ref.targetId;
4848 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4849 if (megasas_dbg_lvl & LD_PD_DEBUG)
4850 dev_info(&instance->pdev->dev,
4851 "LD%d: targetID: 0x%03x\n",
4852 ld_index, ids);
4853 }
4854 }
4855
4856 break;
4857 }
4858
4859 if (ret != DCMD_TIMEOUT)
4860 megasas_return_cmd(instance, cmd);
4861
4862 return ret;
4863 }
4864
4865 /**
4866 * megasas_ld_list_query - Returns FW's ld_list structure
4867 * @instance: Adapter soft state
4868 * @query_type: ld_list structure type
4869 *
4870 * Issues an internal command (DCMD) to get the FW's controller PD
4871 * list structure. This information is mainly used to find out SYSTEM
4872 * supported by the FW.
4873 */
4874 static int
megasas_ld_list_query(struct megasas_instance * instance,u8 query_type)4875 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4876 {
4877 int ret = 0, ld_index = 0, ids = 0;
4878 struct megasas_cmd *cmd;
4879 struct megasas_dcmd_frame *dcmd;
4880 struct MR_LD_TARGETID_LIST *ci;
4881 dma_addr_t ci_h = 0;
4882 u32 tgtid_count;
4883
4884 ci = instance->ld_targetid_list_buf;
4885 ci_h = instance->ld_targetid_list_buf_h;
4886
4887 cmd = megasas_get_cmd(instance);
4888
4889 if (!cmd) {
4890 dev_warn(&instance->pdev->dev,
4891 "megasas_ld_list_query: Failed to get cmd\n");
4892 return -ENOMEM;
4893 }
4894
4895 dcmd = &cmd->frame->dcmd;
4896
4897 memset(ci, 0, sizeof(*ci));
4898 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4899
4900 dcmd->mbox.b[0] = query_type;
4901 if (instance->supportmax256vd)
4902 dcmd->mbox.b[2] = 1;
4903
4904 dcmd->cmd = MFI_CMD_DCMD;
4905 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4906 dcmd->sge_count = 1;
4907 dcmd->flags = MFI_FRAME_DIR_READ;
4908 dcmd->timeout = 0;
4909 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4910 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4911 dcmd->pad_0 = 0;
4912
4913 megasas_set_dma_settings(instance, dcmd, ci_h,
4914 sizeof(struct MR_LD_TARGETID_LIST));
4915
4916 if ((instance->adapter_type != MFI_SERIES) &&
4917 !instance->mask_interrupts)
4918 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4919 else
4920 ret = megasas_issue_polled(instance, cmd);
4921
4922 switch (ret) {
4923 case DCMD_FAILED:
4924 dev_info(&instance->pdev->dev,
4925 "DCMD not supported by firmware - %s %d\n",
4926 __func__, __LINE__);
4927 ret = megasas_get_ld_list(instance);
4928 break;
4929 case DCMD_TIMEOUT:
4930 switch (dcmd_timeout_ocr_possible(instance)) {
4931 case INITIATE_OCR:
4932 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4933 /*
4934 * DCMD failed from AEN path.
4935 * AEN path already hold reset_mutex to avoid PCI access
4936 * while OCR is in progress.
4937 */
4938 mutex_unlock(&instance->reset_mutex);
4939 megasas_reset_fusion(instance->host,
4940 MFI_IO_TIMEOUT_OCR);
4941 mutex_lock(&instance->reset_mutex);
4942 break;
4943 case KILL_ADAPTER:
4944 megaraid_sas_kill_hba(instance);
4945 break;
4946 case IGNORE_TIMEOUT:
4947 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4948 __func__, __LINE__);
4949 break;
4950 }
4951
4952 break;
4953 case DCMD_SUCCESS:
4954 tgtid_count = le32_to_cpu(ci->count);
4955
4956 if (megasas_dbg_lvl & LD_PD_DEBUG)
4957 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4958 __func__, tgtid_count);
4959
4960 if ((tgtid_count > (instance->fw_supported_vd_count)))
4961 break;
4962
4963 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4964 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4965 ids = ci->targetId[ld_index];
4966 instance->ld_ids[ids] = ci->targetId[ld_index];
4967 if (megasas_dbg_lvl & LD_PD_DEBUG)
4968 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n",
4969 ld_index, ci->targetId[ld_index]);
4970 }
4971
4972 break;
4973 }
4974
4975 if (ret != DCMD_TIMEOUT)
4976 megasas_return_cmd(instance, cmd);
4977
4978 return ret;
4979 }
4980
4981 /**
4982 * megasas_host_device_list_query
4983 * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET
4984 * dcmd.mbox - reserved
4985 * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure
4986 * Desc: This DCMD will return the combined device list
4987 * Status: MFI_STAT_OK - List returned successfully
4988 * MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4989 * disabled
4990 * @instance: Adapter soft state
4991 * @is_probe: Driver probe check
4992 * Return: 0 if DCMD succeeded
4993 * non-zero if failed
4994 */
4995 static int
megasas_host_device_list_query(struct megasas_instance * instance,bool is_probe)4996 megasas_host_device_list_query(struct megasas_instance *instance,
4997 bool is_probe)
4998 {
4999 int ret, i, target_id;
5000 struct megasas_cmd *cmd;
5001 struct megasas_dcmd_frame *dcmd;
5002 struct MR_HOST_DEVICE_LIST *ci;
5003 u32 count;
5004 dma_addr_t ci_h;
5005
5006 ci = instance->host_device_list_buf;
5007 ci_h = instance->host_device_list_buf_h;
5008
5009 cmd = megasas_get_cmd(instance);
5010
5011 if (!cmd) {
5012 dev_warn(&instance->pdev->dev,
5013 "%s: failed to get cmd\n",
5014 __func__);
5015 return -ENOMEM;
5016 }
5017
5018 dcmd = &cmd->frame->dcmd;
5019
5020 memset(ci, 0, sizeof(*ci));
5021 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5022
5023 dcmd->mbox.b[0] = is_probe ? 0 : 1;
5024 dcmd->cmd = MFI_CMD_DCMD;
5025 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5026 dcmd->sge_count = 1;
5027 dcmd->flags = MFI_FRAME_DIR_READ;
5028 dcmd->timeout = 0;
5029 dcmd->pad_0 = 0;
5030 dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
5031 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
5032
5033 megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
5034
5035 if (!instance->mask_interrupts) {
5036 ret = megasas_issue_blocked_cmd(instance, cmd,
5037 MFI_IO_TIMEOUT_SECS);
5038 } else {
5039 ret = megasas_issue_polled(instance, cmd);
5040 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5041 }
5042
5043 switch (ret) {
5044 case DCMD_SUCCESS:
5045 /* Fill the internal pd_list and ld_ids array based on
5046 * targetIds returned by FW
5047 */
5048 count = le32_to_cpu(ci->count);
5049
5050 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
5051 break;
5052
5053 if (megasas_dbg_lvl & LD_PD_DEBUG)
5054 dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
5055 __func__, count);
5056
5057 memset(instance->local_pd_list, 0,
5058 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
5059 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
5060 for (i = 0; i < count; i++) {
5061 target_id = le16_to_cpu(ci->host_device_list[i].target_id);
5062 if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
5063 instance->local_pd_list[target_id].tid = target_id;
5064 instance->local_pd_list[target_id].driveType =
5065 ci->host_device_list[i].scsi_type;
5066 instance->local_pd_list[target_id].driveState =
5067 MR_PD_STATE_SYSTEM;
5068 if (megasas_dbg_lvl & LD_PD_DEBUG)
5069 dev_info(&instance->pdev->dev,
5070 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n",
5071 i, target_id, ci->host_device_list[i].scsi_type);
5072 } else {
5073 instance->ld_ids[target_id] = target_id;
5074 if (megasas_dbg_lvl & LD_PD_DEBUG)
5075 dev_info(&instance->pdev->dev,
5076 "Device %d: LD targetID: 0x%03x\n",
5077 i, target_id);
5078 }
5079 }
5080
5081 memcpy(instance->pd_list, instance->local_pd_list,
5082 sizeof(instance->pd_list));
5083 break;
5084
5085 case DCMD_TIMEOUT:
5086 switch (dcmd_timeout_ocr_possible(instance)) {
5087 case INITIATE_OCR:
5088 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5089 mutex_unlock(&instance->reset_mutex);
5090 megasas_reset_fusion(instance->host,
5091 MFI_IO_TIMEOUT_OCR);
5092 mutex_lock(&instance->reset_mutex);
5093 break;
5094 case KILL_ADAPTER:
5095 megaraid_sas_kill_hba(instance);
5096 break;
5097 case IGNORE_TIMEOUT:
5098 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5099 __func__, __LINE__);
5100 break;
5101 }
5102 break;
5103 case DCMD_FAILED:
5104 dev_err(&instance->pdev->dev,
5105 "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
5106 __func__);
5107 break;
5108 }
5109
5110 if (ret != DCMD_TIMEOUT)
5111 megasas_return_cmd(instance, cmd);
5112
5113 return ret;
5114 }
5115
5116 /*
5117 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
5118 * instance : Controller's instance
5119 */
megasas_update_ext_vd_details(struct megasas_instance * instance)5120 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
5121 {
5122 struct fusion_context *fusion;
5123 u32 ventura_map_sz = 0;
5124
5125 fusion = instance->ctrl_context;
5126 /* For MFI based controllers return dummy success */
5127 if (!fusion)
5128 return;
5129
5130 instance->supportmax256vd =
5131 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
5132 /* Below is additional check to address future FW enhancement */
5133 if (instance->ctrl_info_buf->max_lds > 64)
5134 instance->supportmax256vd = 1;
5135
5136 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
5137 * MEGASAS_MAX_DEV_PER_CHANNEL;
5138 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
5139 * MEGASAS_MAX_DEV_PER_CHANNEL;
5140 if (instance->supportmax256vd) {
5141 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
5142 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5143 } else {
5144 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5145 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5146 }
5147
5148 dev_info(&instance->pdev->dev,
5149 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
5150 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
5151 instance->ctrl_info_buf->max_lds);
5152
5153 if (instance->max_raid_mapsize) {
5154 ventura_map_sz = instance->max_raid_mapsize *
5155 MR_MIN_MAP_SIZE; /* 64k */
5156 fusion->current_map_sz = ventura_map_sz;
5157 fusion->max_map_sz = ventura_map_sz;
5158 } else {
5159 fusion->old_map_sz =
5160 struct_size_t(struct MR_FW_RAID_MAP, ldSpanMap,
5161 instance->fw_supported_vd_count);
5162 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
5163
5164 fusion->max_map_sz =
5165 max(fusion->old_map_sz, fusion->new_map_sz);
5166
5167 if (instance->supportmax256vd)
5168 fusion->current_map_sz = fusion->new_map_sz;
5169 else
5170 fusion->current_map_sz = fusion->old_map_sz;
5171 }
5172 /* irrespective of FW raid maps, driver raid map is constant */
5173 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
5174 }
5175
5176 /*
5177 * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
5178 * dcmd.hdr.length - number of bytes to read
5179 * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES
5180 * Desc: Fill in snapdump properties
5181 * Status: MFI_STAT_OK- Command successful
5182 */
megasas_get_snapdump_properties(struct megasas_instance * instance)5183 void megasas_get_snapdump_properties(struct megasas_instance *instance)
5184 {
5185 int ret = 0;
5186 struct megasas_cmd *cmd;
5187 struct megasas_dcmd_frame *dcmd;
5188 struct MR_SNAPDUMP_PROPERTIES *ci;
5189 dma_addr_t ci_h = 0;
5190
5191 ci = instance->snapdump_prop;
5192 ci_h = instance->snapdump_prop_h;
5193
5194 if (!ci)
5195 return;
5196
5197 cmd = megasas_get_cmd(instance);
5198
5199 if (!cmd) {
5200 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
5201 return;
5202 }
5203
5204 dcmd = &cmd->frame->dcmd;
5205
5206 memset(ci, 0, sizeof(*ci));
5207 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5208
5209 dcmd->cmd = MFI_CMD_DCMD;
5210 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5211 dcmd->sge_count = 1;
5212 dcmd->flags = MFI_FRAME_DIR_READ;
5213 dcmd->timeout = 0;
5214 dcmd->pad_0 = 0;
5215 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
5216 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
5217
5218 megasas_set_dma_settings(instance, dcmd, ci_h,
5219 sizeof(struct MR_SNAPDUMP_PROPERTIES));
5220
5221 if (!instance->mask_interrupts) {
5222 ret = megasas_issue_blocked_cmd(instance, cmd,
5223 MFI_IO_TIMEOUT_SECS);
5224 } else {
5225 ret = megasas_issue_polled(instance, cmd);
5226 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5227 }
5228
5229 switch (ret) {
5230 case DCMD_SUCCESS:
5231 instance->snapdump_wait_time =
5232 min_t(u8, ci->trigger_min_num_sec_before_ocr,
5233 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
5234 break;
5235
5236 case DCMD_TIMEOUT:
5237 switch (dcmd_timeout_ocr_possible(instance)) {
5238 case INITIATE_OCR:
5239 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5240 mutex_unlock(&instance->reset_mutex);
5241 megasas_reset_fusion(instance->host,
5242 MFI_IO_TIMEOUT_OCR);
5243 mutex_lock(&instance->reset_mutex);
5244 break;
5245 case KILL_ADAPTER:
5246 megaraid_sas_kill_hba(instance);
5247 break;
5248 case IGNORE_TIMEOUT:
5249 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5250 __func__, __LINE__);
5251 break;
5252 }
5253 }
5254
5255 if (ret != DCMD_TIMEOUT)
5256 megasas_return_cmd(instance, cmd);
5257 }
5258
5259 /**
5260 * megasas_get_ctrl_info - Returns FW's controller structure
5261 * @instance: Adapter soft state
5262 *
5263 * Issues an internal command (DCMD) to get the FW's controller structure.
5264 * This information is mainly used to find out the maximum IO transfer per
5265 * command supported by the FW.
5266 */
5267 int
megasas_get_ctrl_info(struct megasas_instance * instance)5268 megasas_get_ctrl_info(struct megasas_instance *instance)
5269 {
5270 int ret = 0;
5271 struct megasas_cmd *cmd;
5272 struct megasas_dcmd_frame *dcmd;
5273 struct megasas_ctrl_info *ci;
5274 dma_addr_t ci_h = 0;
5275
5276 ci = instance->ctrl_info_buf;
5277 ci_h = instance->ctrl_info_buf_h;
5278
5279 cmd = megasas_get_cmd(instance);
5280
5281 if (!cmd) {
5282 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
5283 return -ENOMEM;
5284 }
5285
5286 dcmd = &cmd->frame->dcmd;
5287
5288 memset(ci, 0, sizeof(*ci));
5289 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5290
5291 dcmd->cmd = MFI_CMD_DCMD;
5292 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5293 dcmd->sge_count = 1;
5294 dcmd->flags = MFI_FRAME_DIR_READ;
5295 dcmd->timeout = 0;
5296 dcmd->pad_0 = 0;
5297 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
5298 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
5299 dcmd->mbox.b[0] = 1;
5300
5301 megasas_set_dma_settings(instance, dcmd, ci_h,
5302 sizeof(struct megasas_ctrl_info));
5303
5304 if ((instance->adapter_type != MFI_SERIES) &&
5305 !instance->mask_interrupts) {
5306 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5307 } else {
5308 ret = megasas_issue_polled(instance, cmd);
5309 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5310 }
5311
5312 switch (ret) {
5313 case DCMD_SUCCESS:
5314 /* Save required controller information in
5315 * CPU endianness format.
5316 */
5317 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
5318 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
5319 le32_to_cpus((u32 *)&ci->adapterOperations2);
5320 le32_to_cpus((u32 *)&ci->adapterOperations3);
5321 le16_to_cpus((u16 *)&ci->adapter_operations4);
5322 le32_to_cpus((u32 *)&ci->adapter_operations5);
5323
5324 /* Update the latest Ext VD info.
5325 * From Init path, store current firmware details.
5326 * From OCR path, detect any firmware properties changes.
5327 * in case of Firmware upgrade without system reboot.
5328 */
5329 megasas_update_ext_vd_details(instance);
5330 instance->support_seqnum_jbod_fp =
5331 ci->adapterOperations3.useSeqNumJbodFP;
5332 instance->support_morethan256jbod =
5333 ci->adapter_operations4.support_pd_map_target_id;
5334 instance->support_nvme_passthru =
5335 ci->adapter_operations4.support_nvme_passthru;
5336 instance->support_pci_lane_margining =
5337 ci->adapter_operations5.support_pci_lane_margining;
5338 instance->task_abort_tmo = ci->TaskAbortTO;
5339 instance->max_reset_tmo = ci->MaxResetTO;
5340
5341 /*Check whether controller is iMR or MR */
5342 instance->is_imr = (ci->memory_size ? 0 : 1);
5343
5344 instance->snapdump_wait_time =
5345 (ci->properties.on_off_properties2.enable_snap_dump ?
5346 MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
5347
5348 instance->enable_fw_dev_list =
5349 ci->properties.on_off_properties2.enable_fw_dev_list;
5350
5351 dev_info(&instance->pdev->dev,
5352 "controller type\t: %s(%dMB)\n",
5353 instance->is_imr ? "iMR" : "MR",
5354 le16_to_cpu(ci->memory_size));
5355
5356 instance->disableOnlineCtrlReset =
5357 ci->properties.OnOffProperties.disableOnlineCtrlReset;
5358 instance->secure_jbod_support =
5359 ci->adapterOperations3.supportSecurityonJBOD;
5360 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
5361 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
5362 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
5363 instance->secure_jbod_support ? "Yes" : "No");
5364 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
5365 instance->support_nvme_passthru ? "Yes" : "No");
5366 dev_info(&instance->pdev->dev,
5367 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5368 instance->task_abort_tmo, instance->max_reset_tmo);
5369 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n",
5370 instance->support_seqnum_jbod_fp ? "Yes" : "No");
5371 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n",
5372 instance->support_pci_lane_margining ? "Yes" : "No");
5373
5374 break;
5375
5376 case DCMD_TIMEOUT:
5377 switch (dcmd_timeout_ocr_possible(instance)) {
5378 case INITIATE_OCR:
5379 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5380 mutex_unlock(&instance->reset_mutex);
5381 megasas_reset_fusion(instance->host,
5382 MFI_IO_TIMEOUT_OCR);
5383 mutex_lock(&instance->reset_mutex);
5384 break;
5385 case KILL_ADAPTER:
5386 megaraid_sas_kill_hba(instance);
5387 break;
5388 case IGNORE_TIMEOUT:
5389 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5390 __func__, __LINE__);
5391 break;
5392 }
5393 break;
5394 case DCMD_FAILED:
5395 megaraid_sas_kill_hba(instance);
5396 break;
5397
5398 }
5399
5400 if (ret != DCMD_TIMEOUT)
5401 megasas_return_cmd(instance, cmd);
5402
5403 return ret;
5404 }
5405
5406 /*
5407 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
5408 * to firmware
5409 *
5410 * @instance: Adapter soft state
5411 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
5412 MR_CRASH_BUF_TURN_OFF = 0
5413 MR_CRASH_BUF_TURN_ON = 1
5414 * @return 0 on success non-zero on failure.
5415 * Issues an internal command (DCMD) to set parameters for crash dump feature.
5416 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5417 * that driver supports crash dump feature. This DCMD will be sent only if
5418 * crash dump feature is supported by the FW.
5419 *
5420 */
megasas_set_crash_dump_params(struct megasas_instance * instance,u8 crash_buf_state)5421 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5422 u8 crash_buf_state)
5423 {
5424 int ret = 0;
5425 struct megasas_cmd *cmd;
5426 struct megasas_dcmd_frame *dcmd;
5427
5428 cmd = megasas_get_cmd(instance);
5429
5430 if (!cmd) {
5431 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5432 return -ENOMEM;
5433 }
5434
5435
5436 dcmd = &cmd->frame->dcmd;
5437
5438 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5439 dcmd->mbox.b[0] = crash_buf_state;
5440 dcmd->cmd = MFI_CMD_DCMD;
5441 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5442 dcmd->sge_count = 1;
5443 dcmd->flags = MFI_FRAME_DIR_NONE;
5444 dcmd->timeout = 0;
5445 dcmd->pad_0 = 0;
5446 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5447 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5448
5449 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5450 CRASH_DMA_BUF_SIZE);
5451
5452 if ((instance->adapter_type != MFI_SERIES) &&
5453 !instance->mask_interrupts)
5454 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5455 else
5456 ret = megasas_issue_polled(instance, cmd);
5457
5458 if (ret == DCMD_TIMEOUT) {
5459 switch (dcmd_timeout_ocr_possible(instance)) {
5460 case INITIATE_OCR:
5461 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5462 megasas_reset_fusion(instance->host,
5463 MFI_IO_TIMEOUT_OCR);
5464 break;
5465 case KILL_ADAPTER:
5466 megaraid_sas_kill_hba(instance);
5467 break;
5468 case IGNORE_TIMEOUT:
5469 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5470 __func__, __LINE__);
5471 break;
5472 }
5473 } else
5474 megasas_return_cmd(instance, cmd);
5475
5476 return ret;
5477 }
5478
5479 /**
5480 * megasas_issue_init_mfi - Initializes the FW
5481 * @instance: Adapter soft state
5482 *
5483 * Issues the INIT MFI cmd
5484 */
5485 static int
megasas_issue_init_mfi(struct megasas_instance * instance)5486 megasas_issue_init_mfi(struct megasas_instance *instance)
5487 {
5488 __le32 context;
5489 struct megasas_cmd *cmd;
5490 struct megasas_init_frame *init_frame;
5491 struct megasas_init_queue_info *initq_info;
5492 dma_addr_t init_frame_h;
5493 dma_addr_t initq_info_h;
5494
5495 /*
5496 * Prepare a init frame. Note the init frame points to queue info
5497 * structure. Each frame has SGL allocated after first 64 bytes. For
5498 * this frame - since we don't need any SGL - we use SGL's space as
5499 * queue info structure
5500 *
5501 * We will not get a NULL command below. We just created the pool.
5502 */
5503 cmd = megasas_get_cmd(instance);
5504
5505 init_frame = (struct megasas_init_frame *)cmd->frame;
5506 initq_info = (struct megasas_init_queue_info *)
5507 ((unsigned long)init_frame + 64);
5508
5509 init_frame_h = cmd->frame_phys_addr;
5510 initq_info_h = init_frame_h + 64;
5511
5512 context = init_frame->context;
5513 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5514 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5515 init_frame->context = context;
5516
5517 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5518 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5519
5520 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5521 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5522
5523 init_frame->cmd = MFI_CMD_INIT;
5524 init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5525 init_frame->queue_info_new_phys_addr_lo =
5526 cpu_to_le32(lower_32_bits(initq_info_h));
5527 init_frame->queue_info_new_phys_addr_hi =
5528 cpu_to_le32(upper_32_bits(initq_info_h));
5529
5530 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5531
5532 /*
5533 * disable the intr before firing the init frame to FW
5534 */
5535 instance->instancet->disable_intr(instance);
5536
5537 /*
5538 * Issue the init frame in polled mode
5539 */
5540
5541 if (megasas_issue_polled(instance, cmd)) {
5542 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5543 megasas_return_cmd(instance, cmd);
5544 goto fail_fw_init;
5545 }
5546
5547 megasas_return_cmd(instance, cmd);
5548
5549 return 0;
5550
5551 fail_fw_init:
5552 return -EINVAL;
5553 }
5554
5555 static u32
megasas_init_adapter_mfi(struct megasas_instance * instance)5556 megasas_init_adapter_mfi(struct megasas_instance *instance)
5557 {
5558 u32 context_sz;
5559 u32 reply_q_sz;
5560
5561 /*
5562 * Get various operational parameters from status register
5563 */
5564 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5565 /*
5566 * Reduce the max supported cmds by 1. This is to ensure that the
5567 * reply_q_sz (1 more than the max cmd that driver may send)
5568 * does not exceed max cmds that the FW can support
5569 */
5570 instance->max_fw_cmds = instance->max_fw_cmds-1;
5571 instance->max_mfi_cmds = instance->max_fw_cmds;
5572 instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5573 0x10;
5574 /*
5575 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5576 * are reserved for IOCTL + driver's internal DCMDs.
5577 */
5578 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5579 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5580 instance->max_scsi_cmds = (instance->max_fw_cmds -
5581 MEGASAS_SKINNY_INT_CMDS);
5582 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5583 } else {
5584 instance->max_scsi_cmds = (instance->max_fw_cmds -
5585 MEGASAS_INT_CMDS);
5586 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5587 }
5588
5589 instance->cur_can_queue = instance->max_scsi_cmds;
5590 /*
5591 * Create a pool of commands
5592 */
5593 if (megasas_alloc_cmds(instance))
5594 goto fail_alloc_cmds;
5595
5596 /*
5597 * Allocate memory for reply queue. Length of reply queue should
5598 * be _one_ more than the maximum commands handled by the firmware.
5599 *
5600 * Note: When FW completes commands, it places corresponding contex
5601 * values in this circular reply queue. This circular queue is a fairly
5602 * typical producer-consumer queue. FW is the producer (of completed
5603 * commands) and the driver is the consumer.
5604 */
5605 context_sz = sizeof(u32);
5606 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5607
5608 instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5609 reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5610
5611 if (!instance->reply_queue) {
5612 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5613 goto fail_reply_queue;
5614 }
5615
5616 if (megasas_issue_init_mfi(instance))
5617 goto fail_fw_init;
5618
5619 if (megasas_get_ctrl_info(instance)) {
5620 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5621 "Fail from %s %d\n", instance->unique_id,
5622 __func__, __LINE__);
5623 goto fail_fw_init;
5624 }
5625
5626 instance->fw_support_ieee = 0;
5627 instance->fw_support_ieee =
5628 (instance->instancet->read_fw_status_reg(instance) &
5629 0x04000000);
5630
5631 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5632 instance->fw_support_ieee);
5633
5634 if (instance->fw_support_ieee)
5635 instance->flag_ieee = 1;
5636
5637 return 0;
5638
5639 fail_fw_init:
5640
5641 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5642 instance->reply_queue, instance->reply_queue_h);
5643 fail_reply_queue:
5644 megasas_free_cmds(instance);
5645
5646 fail_alloc_cmds:
5647 return 1;
5648 }
5649
5650 static
megasas_setup_irq_poll(struct megasas_instance * instance)5651 void megasas_setup_irq_poll(struct megasas_instance *instance)
5652 {
5653 struct megasas_irq_context *irq_ctx;
5654 u32 count, i;
5655
5656 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5657
5658 /* Initialize IRQ poll */
5659 for (i = 0; i < count; i++) {
5660 irq_ctx = &instance->irq_context[i];
5661 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i);
5662 irq_ctx->irq_poll_scheduled = false;
5663 irq_poll_init(&irq_ctx->irqpoll,
5664 instance->threshold_reply_count,
5665 megasas_irqpoll);
5666 }
5667 }
5668
5669 /*
5670 * megasas_setup_irqs_ioapic - register legacy interrupts.
5671 * @instance: Adapter soft state
5672 *
5673 * Do not enable interrupt, only setup ISRs.
5674 *
5675 * Return 0 on success.
5676 */
5677 static int
megasas_setup_irqs_ioapic(struct megasas_instance * instance)5678 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5679 {
5680 struct pci_dev *pdev;
5681
5682 pdev = instance->pdev;
5683 instance->irq_context[0].instance = instance;
5684 instance->irq_context[0].MSIxIndex = 0;
5685 snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u",
5686 "megasas", instance->host->host_no);
5687 if (request_irq(pci_irq_vector(pdev, 0),
5688 instance->instancet->service_isr, IRQF_SHARED,
5689 instance->irq_context->name, &instance->irq_context[0])) {
5690 dev_err(&instance->pdev->dev,
5691 "Failed to register IRQ from %s %d\n",
5692 __func__, __LINE__);
5693 return -1;
5694 }
5695 instance->perf_mode = MR_LATENCY_PERF_MODE;
5696 instance->low_latency_index_start = 0;
5697 return 0;
5698 }
5699
5700 /**
5701 * megasas_setup_irqs_msix - register MSI-x interrupts.
5702 * @instance: Adapter soft state
5703 * @is_probe: Driver probe check
5704 *
5705 * Do not enable interrupt, only setup ISRs.
5706 *
5707 * Return 0 on success.
5708 */
5709 static int
megasas_setup_irqs_msix(struct megasas_instance * instance,u8 is_probe)5710 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5711 {
5712 int i, j;
5713 struct pci_dev *pdev;
5714
5715 pdev = instance->pdev;
5716
5717 /* Try MSI-x */
5718 for (i = 0; i < instance->msix_vectors; i++) {
5719 instance->irq_context[i].instance = instance;
5720 instance->irq_context[i].MSIxIndex = i;
5721 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u",
5722 "megasas", instance->host->host_no, i);
5723 if (request_irq(pci_irq_vector(pdev, i),
5724 instance->instancet->service_isr, 0, instance->irq_context[i].name,
5725 &instance->irq_context[i])) {
5726 dev_err(&instance->pdev->dev,
5727 "Failed to register IRQ for vector %d.\n", i);
5728 for (j = 0; j < i; j++) {
5729 if (j < instance->low_latency_index_start)
5730 irq_update_affinity_hint(
5731 pci_irq_vector(pdev, j), NULL);
5732 free_irq(pci_irq_vector(pdev, j),
5733 &instance->irq_context[j]);
5734 }
5735 /* Retry irq register for IO_APIC*/
5736 instance->msix_vectors = 0;
5737 instance->msix_load_balance = false;
5738 if (is_probe) {
5739 pci_free_irq_vectors(instance->pdev);
5740 return megasas_setup_irqs_ioapic(instance);
5741 } else {
5742 return -1;
5743 }
5744 }
5745 }
5746
5747 return 0;
5748 }
5749
5750 /*
5751 * megasas_destroy_irqs- unregister interrupts.
5752 * @instance: Adapter soft state
5753 * return: void
5754 */
5755 static void
megasas_destroy_irqs(struct megasas_instance * instance)5756 megasas_destroy_irqs(struct megasas_instance *instance) {
5757
5758 int i;
5759 int count;
5760 struct megasas_irq_context *irq_ctx;
5761
5762 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5763 if (instance->adapter_type != MFI_SERIES) {
5764 for (i = 0; i < count; i++) {
5765 irq_ctx = &instance->irq_context[i];
5766 irq_poll_disable(&irq_ctx->irqpoll);
5767 }
5768 }
5769
5770 if (instance->msix_vectors)
5771 for (i = 0; i < instance->msix_vectors; i++) {
5772 if (i < instance->low_latency_index_start)
5773 irq_update_affinity_hint(
5774 pci_irq_vector(instance->pdev, i), NULL);
5775 free_irq(pci_irq_vector(instance->pdev, i),
5776 &instance->irq_context[i]);
5777 }
5778 else
5779 free_irq(pci_irq_vector(instance->pdev, 0),
5780 &instance->irq_context[0]);
5781 }
5782
5783 /**
5784 * megasas_setup_jbod_map - setup jbod map for FP seq_number.
5785 * @instance: Adapter soft state
5786 *
5787 * Return 0 on success.
5788 */
5789 void
megasas_setup_jbod_map(struct megasas_instance * instance)5790 megasas_setup_jbod_map(struct megasas_instance *instance)
5791 {
5792 int i;
5793 struct fusion_context *fusion = instance->ctrl_context;
5794 size_t pd_seq_map_sz;
5795
5796 pd_seq_map_sz = struct_size_t(struct MR_PD_CFG_SEQ_NUM_SYNC, seq,
5797 MAX_PHYSICAL_DEVICES);
5798
5799 instance->use_seqnum_jbod_fp =
5800 instance->support_seqnum_jbod_fp;
5801 if (reset_devices || !fusion ||
5802 !instance->support_seqnum_jbod_fp) {
5803 dev_info(&instance->pdev->dev,
5804 "JBOD sequence map is disabled %s %d\n",
5805 __func__, __LINE__);
5806 instance->use_seqnum_jbod_fp = false;
5807 return;
5808 }
5809
5810 if (fusion->pd_seq_sync[0])
5811 goto skip_alloc;
5812
5813 for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5814 fusion->pd_seq_sync[i] = dma_alloc_coherent
5815 (&instance->pdev->dev, pd_seq_map_sz,
5816 &fusion->pd_seq_phys[i], GFP_KERNEL);
5817 if (!fusion->pd_seq_sync[i]) {
5818 dev_err(&instance->pdev->dev,
5819 "Failed to allocate memory from %s %d\n",
5820 __func__, __LINE__);
5821 if (i == 1) {
5822 dma_free_coherent(&instance->pdev->dev,
5823 pd_seq_map_sz, fusion->pd_seq_sync[0],
5824 fusion->pd_seq_phys[0]);
5825 fusion->pd_seq_sync[0] = NULL;
5826 }
5827 instance->use_seqnum_jbod_fp = false;
5828 return;
5829 }
5830 }
5831
5832 skip_alloc:
5833 if (!megasas_sync_pd_seq_num(instance, false) &&
5834 !megasas_sync_pd_seq_num(instance, true))
5835 instance->use_seqnum_jbod_fp = true;
5836 else
5837 instance->use_seqnum_jbod_fp = false;
5838 }
5839
megasas_setup_reply_map(struct megasas_instance * instance)5840 static void megasas_setup_reply_map(struct megasas_instance *instance)
5841 {
5842 const struct cpumask *mask;
5843 unsigned int queue, cpu, low_latency_index_start;
5844
5845 low_latency_index_start = instance->low_latency_index_start;
5846
5847 for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) {
5848 mask = pci_irq_get_affinity(instance->pdev, queue);
5849 if (!mask)
5850 goto fallback;
5851
5852 for_each_cpu(cpu, mask)
5853 instance->reply_map[cpu] = queue;
5854 }
5855 return;
5856
5857 fallback:
5858 queue = low_latency_index_start;
5859 for_each_possible_cpu(cpu) {
5860 instance->reply_map[cpu] = queue;
5861 if (queue == (instance->msix_vectors - 1))
5862 queue = low_latency_index_start;
5863 else
5864 queue++;
5865 }
5866 }
5867
5868 /**
5869 * megasas_get_device_list - Get the PD and LD device list from FW.
5870 * @instance: Adapter soft state
5871 * @return: Success or failure
5872 *
5873 * Issue DCMDs to Firmware to get the PD and LD list.
5874 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5875 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5876 */
5877 static
megasas_get_device_list(struct megasas_instance * instance)5878 int megasas_get_device_list(struct megasas_instance *instance)
5879 {
5880 if (instance->enable_fw_dev_list) {
5881 if (megasas_host_device_list_query(instance, true))
5882 return FAILED;
5883 } else {
5884 if (megasas_get_pd_list(instance) < 0) {
5885 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5886 return FAILED;
5887 }
5888
5889 if (megasas_ld_list_query(instance,
5890 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5891 dev_err(&instance->pdev->dev, "failed to get LD list\n");
5892 return FAILED;
5893 }
5894 }
5895
5896 return SUCCESS;
5897 }
5898
5899 /**
5900 * megasas_set_high_iops_queue_affinity_and_hint - Set affinity and hint
5901 * for high IOPS queues
5902 * @instance: Adapter soft state
5903 * return: void
5904 */
5905 static inline void
megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance * instance)5906 megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance *instance)
5907 {
5908 int i;
5909 unsigned int irq;
5910 const struct cpumask *mask;
5911
5912 if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5913 mask = cpumask_of_node(dev_to_node(&instance->pdev->dev));
5914
5915 for (i = 0; i < instance->low_latency_index_start; i++) {
5916 irq = pci_irq_vector(instance->pdev, i);
5917 irq_set_affinity_and_hint(irq, mask);
5918 }
5919 }
5920 }
5921
5922 static int
__megasas_alloc_irq_vectors(struct megasas_instance * instance)5923 __megasas_alloc_irq_vectors(struct megasas_instance *instance)
5924 {
5925 int i, irq_flags;
5926 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5927 struct irq_affinity *descp = &desc;
5928
5929 irq_flags = PCI_IRQ_MSIX;
5930
5931 if (instance->smp_affinity_enable)
5932 irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES;
5933 else
5934 descp = NULL;
5935
5936 /* Do not allocate msix vectors for poll_queues.
5937 * msix_vectors is always within a range of FW supported reply queue.
5938 */
5939 i = pci_alloc_irq_vectors_affinity(instance->pdev,
5940 instance->low_latency_index_start,
5941 instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp);
5942
5943 return i;
5944 }
5945
5946 /**
5947 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors
5948 * @instance: Adapter soft state
5949 * return: void
5950 */
5951 static void
megasas_alloc_irq_vectors(struct megasas_instance * instance)5952 megasas_alloc_irq_vectors(struct megasas_instance *instance)
5953 {
5954 int i;
5955 unsigned int num_msix_req;
5956
5957 instance->iopoll_q_count = 0;
5958 if ((instance->adapter_type != MFI_SERIES) &&
5959 poll_queues) {
5960
5961 instance->perf_mode = MR_LATENCY_PERF_MODE;
5962 instance->low_latency_index_start = 1;
5963
5964 /* reserve for default and non-mananged pre-vector. */
5965 if (instance->msix_vectors > (poll_queues + 2))
5966 instance->iopoll_q_count = poll_queues;
5967 else
5968 instance->iopoll_q_count = 0;
5969
5970 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5971 instance->msix_vectors = min(num_msix_req,
5972 instance->msix_vectors);
5973
5974 }
5975
5976 i = __megasas_alloc_irq_vectors(instance);
5977
5978 if (((instance->perf_mode == MR_BALANCED_PERF_MODE)
5979 || instance->iopoll_q_count) &&
5980 (i != (instance->msix_vectors - instance->iopoll_q_count))) {
5981 if (instance->msix_vectors)
5982 pci_free_irq_vectors(instance->pdev);
5983 /* Disable Balanced IOPS mode and try realloc vectors */
5984 instance->perf_mode = MR_LATENCY_PERF_MODE;
5985 instance->low_latency_index_start = 1;
5986 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5987
5988 instance->msix_vectors = min(num_msix_req,
5989 instance->msix_vectors);
5990
5991 instance->iopoll_q_count = 0;
5992 i = __megasas_alloc_irq_vectors(instance);
5993
5994 }
5995
5996 dev_info(&instance->pdev->dev,
5997 "requested/available msix %d/%d poll_queue %d\n",
5998 instance->msix_vectors - instance->iopoll_q_count,
5999 i, instance->iopoll_q_count);
6000
6001 if (i > 0)
6002 instance->msix_vectors = i;
6003 else
6004 instance->msix_vectors = 0;
6005
6006 if (instance->smp_affinity_enable)
6007 megasas_set_high_iops_queue_affinity_and_hint(instance);
6008 }
6009
6010 /**
6011 * megasas_init_fw - Initializes the FW
6012 * @instance: Adapter soft state
6013 *
6014 * This is the main function for initializing firmware
6015 */
6016
megasas_init_fw(struct megasas_instance * instance)6017 static int megasas_init_fw(struct megasas_instance *instance)
6018 {
6019 u32 max_sectors_1;
6020 u32 max_sectors_2, tmp_sectors, msix_enable;
6021 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
6022 resource_size_t base_addr;
6023 void *base_addr_phys;
6024 struct megasas_ctrl_info *ctrl_info = NULL;
6025 unsigned long bar_list;
6026 int i, j, loop;
6027 struct IOV_111 *iovPtr;
6028 struct fusion_context *fusion;
6029 bool intr_coalescing;
6030 unsigned int num_msix_req;
6031 u16 lnksta, speed;
6032
6033 fusion = instance->ctrl_context;
6034
6035 /* Find first memory bar */
6036 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
6037 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
6038 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
6039 "megasas: LSI")) {
6040 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
6041 return -EBUSY;
6042 }
6043
6044 base_addr = pci_resource_start(instance->pdev, instance->bar);
6045 instance->reg_set = ioremap(base_addr, 8192);
6046
6047 if (!instance->reg_set) {
6048 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
6049 goto fail_ioremap;
6050 }
6051
6052 base_addr_phys = &base_addr;
6053 dev_printk(KERN_DEBUG, &instance->pdev->dev,
6054 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n",
6055 instance->bar, base_addr_phys, instance->reg_set);
6056
6057 if (instance->adapter_type != MFI_SERIES)
6058 instance->instancet = &megasas_instance_template_fusion;
6059 else {
6060 switch (instance->pdev->device) {
6061 case PCI_DEVICE_ID_LSI_SAS1078R:
6062 case PCI_DEVICE_ID_LSI_SAS1078DE:
6063 instance->instancet = &megasas_instance_template_ppc;
6064 break;
6065 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
6066 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
6067 instance->instancet = &megasas_instance_template_gen2;
6068 break;
6069 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
6070 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
6071 instance->instancet = &megasas_instance_template_skinny;
6072 break;
6073 case PCI_DEVICE_ID_LSI_SAS1064R:
6074 case PCI_DEVICE_ID_DELL_PERC5:
6075 default:
6076 instance->instancet = &megasas_instance_template_xscale;
6077 instance->pd_list_not_supported = 1;
6078 break;
6079 }
6080 }
6081
6082 if (megasas_transition_to_ready(instance, 0)) {
6083 dev_info(&instance->pdev->dev,
6084 "Failed to transition controller to ready from %s!\n",
6085 __func__);
6086 if (instance->adapter_type != MFI_SERIES) {
6087 status_reg = instance->instancet->read_fw_status_reg(
6088 instance);
6089 if (status_reg & MFI_RESET_ADAPTER) {
6090 if (megasas_adp_reset_wait_for_ready
6091 (instance, true, 0) == FAILED)
6092 goto fail_ready_state;
6093 } else {
6094 goto fail_ready_state;
6095 }
6096 } else {
6097 atomic_set(&instance->fw_reset_no_pci_access, 1);
6098 instance->instancet->adp_reset
6099 (instance, instance->reg_set);
6100 atomic_set(&instance->fw_reset_no_pci_access, 0);
6101
6102 /*waiting for about 30 second before retry*/
6103 ssleep(30);
6104
6105 if (megasas_transition_to_ready(instance, 0))
6106 goto fail_ready_state;
6107 }
6108
6109 dev_info(&instance->pdev->dev,
6110 "FW restarted successfully from %s!\n",
6111 __func__);
6112 }
6113
6114 megasas_init_ctrl_params(instance);
6115
6116 if (megasas_set_dma_mask(instance))
6117 goto fail_ready_state;
6118
6119 if (megasas_alloc_ctrl_mem(instance))
6120 goto fail_alloc_dma_buf;
6121
6122 if (megasas_alloc_ctrl_dma_buffers(instance))
6123 goto fail_alloc_dma_buf;
6124
6125 fusion = instance->ctrl_context;
6126
6127 if (instance->adapter_type >= VENTURA_SERIES) {
6128 scratch_pad_2 =
6129 megasas_readl(instance,
6130 &instance->reg_set->outbound_scratch_pad_2);
6131 instance->max_raid_mapsize = ((scratch_pad_2 >>
6132 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
6133 MR_MAX_RAID_MAP_SIZE_MASK);
6134 }
6135
6136 instance->enable_sdev_max_qd = enable_sdev_max_qd;
6137
6138 switch (instance->adapter_type) {
6139 case VENTURA_SERIES:
6140 fusion->pcie_bw_limitation = true;
6141 break;
6142 case AERO_SERIES:
6143 fusion->r56_div_offload = true;
6144 break;
6145 default:
6146 break;
6147 }
6148
6149 /* Check if MSI-X is supported while in ready state */
6150 msix_enable = (instance->instancet->read_fw_status_reg(instance) &
6151 0x4000000) >> 0x1a;
6152 if (msix_enable && !msix_disable) {
6153
6154 scratch_pad_1 = megasas_readl
6155 (instance, &instance->reg_set->outbound_scratch_pad_1);
6156 /* Check max MSI-X vectors */
6157 if (fusion) {
6158 if (instance->adapter_type == THUNDERBOLT_SERIES) {
6159 /* Thunderbolt Series*/
6160 instance->msix_vectors = (scratch_pad_1
6161 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
6162 } else {
6163 instance->msix_vectors = ((scratch_pad_1
6164 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
6165 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
6166
6167 /*
6168 * For Invader series, > 8 MSI-x vectors
6169 * supported by FW/HW implies combined
6170 * reply queue mode is enabled.
6171 * For Ventura series, > 16 MSI-x vectors
6172 * supported by FW/HW implies combined
6173 * reply queue mode is enabled.
6174 */
6175 switch (instance->adapter_type) {
6176 case INVADER_SERIES:
6177 if (instance->msix_vectors > 8)
6178 instance->msix_combined = true;
6179 break;
6180 case AERO_SERIES:
6181 case VENTURA_SERIES:
6182 if (instance->msix_vectors > 16)
6183 instance->msix_combined = true;
6184 break;
6185 }
6186
6187 if (rdpq_enable)
6188 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
6189 1 : 0;
6190
6191 if (instance->adapter_type >= INVADER_SERIES &&
6192 !instance->msix_combined) {
6193 instance->msix_load_balance = true;
6194 instance->smp_affinity_enable = false;
6195 }
6196
6197 /* Save 1-15 reply post index address to local memory
6198 * Index 0 is already saved from reg offset
6199 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
6200 */
6201 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
6202 instance->reply_post_host_index_addr[loop] =
6203 (u32 __iomem *)
6204 ((u8 __iomem *)instance->reg_set +
6205 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
6206 + (loop * 0x10));
6207 }
6208 }
6209
6210 dev_info(&instance->pdev->dev,
6211 "firmware supports msix\t: (%d)",
6212 instance->msix_vectors);
6213 if (msix_vectors)
6214 instance->msix_vectors = min(msix_vectors,
6215 instance->msix_vectors);
6216 } else /* MFI adapters */
6217 instance->msix_vectors = 1;
6218
6219
6220 /*
6221 * For Aero (if some conditions are met), driver will configure a
6222 * few additional reply queues with interrupt coalescing enabled.
6223 * These queues with interrupt coalescing enabled are called
6224 * High IOPS queues and rest of reply queues (based on number of
6225 * logical CPUs) are termed as Low latency queues.
6226 *
6227 * Total Number of reply queues = High IOPS queues + low latency queues
6228 *
6229 * For rest of fusion adapters, 1 additional reply queue will be
6230 * reserved for management commands, rest of reply queues
6231 * (based on number of logical CPUs) will be used for IOs and
6232 * referenced as IO queues.
6233 * Total Number of reply queues = 1 + IO queues
6234 *
6235 * MFI adapters supports single MSI-x so single reply queue
6236 * will be used for IO and management commands.
6237 */
6238
6239 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
6240 true : false;
6241 if (intr_coalescing &&
6242 (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6243 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6244 instance->perf_mode = MR_BALANCED_PERF_MODE;
6245 else
6246 instance->perf_mode = MR_LATENCY_PERF_MODE;
6247
6248
6249 if (instance->adapter_type == AERO_SERIES) {
6250 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6251 speed = lnksta & PCI_EXP_LNKSTA_CLS;
6252
6253 /*
6254 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6255 * in latency perf mode and enable R1 PCI bandwidth algorithm
6256 */
6257 if (speed < 0x4) {
6258 instance->perf_mode = MR_LATENCY_PERF_MODE;
6259 fusion->pcie_bw_limitation = true;
6260 }
6261
6262 /*
6263 * Performance mode settings provided through module parameter-perf_mode will
6264 * take affect only for:
6265 * 1. Aero family of adapters.
6266 * 2. When user sets module parameter- perf_mode in range of 0-2.
6267 */
6268 if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6269 (perf_mode <= MR_LATENCY_PERF_MODE))
6270 instance->perf_mode = perf_mode;
6271 /*
6272 * If intr coalescing is not supported by controller FW, then IOPS
6273 * and Balanced modes are not feasible.
6274 */
6275 if (!intr_coalescing)
6276 instance->perf_mode = MR_LATENCY_PERF_MODE;
6277
6278 }
6279
6280 if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6281 instance->low_latency_index_start =
6282 MR_HIGH_IOPS_QUEUE_COUNT;
6283 else
6284 instance->low_latency_index_start = 1;
6285
6286 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
6287
6288 instance->msix_vectors = min(num_msix_req,
6289 instance->msix_vectors);
6290
6291 megasas_alloc_irq_vectors(instance);
6292 if (!instance->msix_vectors)
6293 instance->msix_load_balance = false;
6294 }
6295 /*
6296 * MSI-X host index 0 is common for all adapter.
6297 * It is used for all MPT based Adapters.
6298 */
6299 if (instance->msix_combined) {
6300 instance->reply_post_host_index_addr[0] =
6301 (u32 *)((u8 *)instance->reg_set +
6302 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6303 } else {
6304 instance->reply_post_host_index_addr[0] =
6305 (u32 *)((u8 *)instance->reg_set +
6306 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6307 }
6308
6309 if (!instance->msix_vectors) {
6310 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_INTX);
6311 if (i < 0)
6312 goto fail_init_adapter;
6313 }
6314
6315 megasas_setup_reply_map(instance);
6316
6317 dev_info(&instance->pdev->dev,
6318 "current msix/online cpus\t: (%d/%d)\n",
6319 instance->msix_vectors, (unsigned int)num_online_cpus());
6320 dev_info(&instance->pdev->dev,
6321 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6322
6323 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6324 (unsigned long)instance);
6325
6326 /*
6327 * Below are default value for legacy Firmware.
6328 * non-fusion based controllers
6329 */
6330 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6331 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6332 /* Get operational params, sge flags, send init cmd to controller */
6333 if (instance->instancet->init_adapter(instance))
6334 goto fail_init_adapter;
6335
6336 if (instance->adapter_type >= VENTURA_SERIES) {
6337 scratch_pad_3 =
6338 megasas_readl(instance,
6339 &instance->reg_set->outbound_scratch_pad_3);
6340 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6341 MR_DEFAULT_NVME_PAGE_SHIFT)
6342 instance->nvme_page_size =
6343 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6344
6345 dev_info(&instance->pdev->dev,
6346 "NVME page size\t: (%d)\n", instance->nvme_page_size);
6347 }
6348
6349 if (instance->msix_vectors ?
6350 megasas_setup_irqs_msix(instance, 1) :
6351 megasas_setup_irqs_ioapic(instance))
6352 goto fail_init_adapter;
6353
6354 if (instance->adapter_type != MFI_SERIES)
6355 megasas_setup_irq_poll(instance);
6356
6357 instance->instancet->enable_intr(instance);
6358
6359 dev_info(&instance->pdev->dev, "INIT adapter done\n");
6360
6361 megasas_setup_jbod_map(instance);
6362
6363 if (megasas_get_device_list(instance) != SUCCESS) {
6364 dev_err(&instance->pdev->dev,
6365 "%s: megasas_get_device_list failed\n",
6366 __func__);
6367 goto fail_get_ld_pd_list;
6368 }
6369
6370 /* stream detection initialization */
6371 if (instance->adapter_type >= VENTURA_SERIES) {
6372 fusion->stream_detect_by_ld =
6373 kcalloc(MAX_LOGICAL_DRIVES_EXT,
6374 sizeof(struct LD_STREAM_DETECT *),
6375 GFP_KERNEL);
6376 if (!fusion->stream_detect_by_ld) {
6377 dev_err(&instance->pdev->dev,
6378 "unable to allocate stream detection for pool of LDs\n");
6379 goto fail_get_ld_pd_list;
6380 }
6381 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6382 fusion->stream_detect_by_ld[i] =
6383 kzalloc(sizeof(struct LD_STREAM_DETECT),
6384 GFP_KERNEL);
6385 if (!fusion->stream_detect_by_ld[i]) {
6386 dev_err(&instance->pdev->dev,
6387 "unable to allocate stream detect by LD\n");
6388 for (j = 0; j < i; ++j)
6389 kfree(fusion->stream_detect_by_ld[j]);
6390 kfree(fusion->stream_detect_by_ld);
6391 fusion->stream_detect_by_ld = NULL;
6392 goto fail_get_ld_pd_list;
6393 }
6394 fusion->stream_detect_by_ld[i]->mru_bit_map
6395 = MR_STREAM_BITMAP;
6396 }
6397 }
6398
6399 /*
6400 * Compute the max allowed sectors per IO: The controller info has two
6401 * limits on max sectors. Driver should use the minimum of these two.
6402 *
6403 * 1 << stripe_sz_ops.min = max sectors per strip
6404 *
6405 * Note that older firmwares ( < FW ver 30) didn't report information
6406 * to calculate max_sectors_1. So the number ended up as zero always.
6407 */
6408 tmp_sectors = 0;
6409 ctrl_info = instance->ctrl_info_buf;
6410
6411 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6412 le16_to_cpu(ctrl_info->max_strips_per_io);
6413 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6414
6415 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6416
6417 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6418 instance->passive = ctrl_info->cluster.passive;
6419 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6420 instance->UnevenSpanSupport =
6421 ctrl_info->adapterOperations2.supportUnevenSpans;
6422 if (instance->UnevenSpanSupport) {
6423 struct fusion_context *fusion = instance->ctrl_context;
6424 if (MR_ValidateMapInfo(instance, instance->map_id))
6425 fusion->fast_path_io = 1;
6426 else
6427 fusion->fast_path_io = 0;
6428
6429 }
6430 if (ctrl_info->host_interface.SRIOV) {
6431 instance->requestorId = ctrl_info->iov.requestorId;
6432 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6433 if (!ctrl_info->adapterOperations2.activePassive)
6434 instance->PlasmaFW111 = 1;
6435
6436 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6437 instance->PlasmaFW111 ? "1.11" : "new");
6438
6439 if (instance->PlasmaFW111) {
6440 iovPtr = (struct IOV_111 *)
6441 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6442 instance->requestorId = iovPtr->requestorId;
6443 }
6444 }
6445 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6446 instance->requestorId);
6447 }
6448
6449 instance->crash_dump_fw_support =
6450 ctrl_info->adapterOperations3.supportCrashDump;
6451 instance->crash_dump_drv_support =
6452 (instance->crash_dump_fw_support &&
6453 instance->crash_dump_buf);
6454 if (instance->crash_dump_drv_support)
6455 megasas_set_crash_dump_params(instance,
6456 MR_CRASH_BUF_TURN_OFF);
6457
6458 else {
6459 if (instance->crash_dump_buf)
6460 dma_free_coherent(&instance->pdev->dev,
6461 CRASH_DMA_BUF_SIZE,
6462 instance->crash_dump_buf,
6463 instance->crash_dump_h);
6464 instance->crash_dump_buf = NULL;
6465 }
6466
6467 if (instance->snapdump_wait_time) {
6468 megasas_get_snapdump_properties(instance);
6469 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6470 instance->snapdump_wait_time);
6471 }
6472
6473 dev_info(&instance->pdev->dev,
6474 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6475 le16_to_cpu(ctrl_info->pci.vendor_id),
6476 le16_to_cpu(ctrl_info->pci.device_id),
6477 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6478 le16_to_cpu(ctrl_info->pci.sub_device_id));
6479 dev_info(&instance->pdev->dev, "unevenspan support : %s\n",
6480 instance->UnevenSpanSupport ? "yes" : "no");
6481 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n",
6482 instance->crash_dump_drv_support ? "yes" : "no");
6483 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n",
6484 instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6485
6486 instance->max_sectors_per_req = instance->max_num_sge *
6487 SGE_BUFFER_SIZE / 512;
6488 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6489 instance->max_sectors_per_req = tmp_sectors;
6490
6491 /* Check for valid throttlequeuedepth module parameter */
6492 if (throttlequeuedepth &&
6493 throttlequeuedepth <= instance->max_scsi_cmds)
6494 instance->throttlequeuedepth = throttlequeuedepth;
6495 else
6496 instance->throttlequeuedepth =
6497 MEGASAS_THROTTLE_QUEUE_DEPTH;
6498
6499 if ((resetwaittime < 1) ||
6500 (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6501 resetwaittime = MEGASAS_RESET_WAIT_TIME;
6502
6503 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6504 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6505
6506 /* Launch SR-IOV heartbeat timer */
6507 if (instance->requestorId) {
6508 if (!megasas_sriov_start_heartbeat(instance, 1)) {
6509 megasas_start_timer(instance);
6510 } else {
6511 instance->skip_heartbeat_timer_del = 1;
6512 goto fail_get_ld_pd_list;
6513 }
6514 }
6515
6516 /*
6517 * Create and start watchdog thread which will monitor
6518 * controller state every 1 sec and trigger OCR when
6519 * it enters fault state
6520 */
6521 if (instance->adapter_type != MFI_SERIES)
6522 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6523 goto fail_start_watchdog;
6524
6525 return 0;
6526
6527 fail_start_watchdog:
6528 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6529 del_timer_sync(&instance->sriov_heartbeat_timer);
6530 fail_get_ld_pd_list:
6531 instance->instancet->disable_intr(instance);
6532 megasas_destroy_irqs(instance);
6533 fail_init_adapter:
6534 if (instance->msix_vectors)
6535 pci_free_irq_vectors(instance->pdev);
6536 instance->msix_vectors = 0;
6537 fail_alloc_dma_buf:
6538 megasas_free_ctrl_dma_buffers(instance);
6539 megasas_free_ctrl_mem(instance);
6540 fail_ready_state:
6541 iounmap(instance->reg_set);
6542
6543 fail_ioremap:
6544 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6545
6546 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6547 __func__, __LINE__);
6548 return -EINVAL;
6549 }
6550
6551 /**
6552 * megasas_release_mfi - Reverses the FW initialization
6553 * @instance: Adapter soft state
6554 */
megasas_release_mfi(struct megasas_instance * instance)6555 static void megasas_release_mfi(struct megasas_instance *instance)
6556 {
6557 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6558
6559 if (instance->reply_queue)
6560 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6561 instance->reply_queue, instance->reply_queue_h);
6562
6563 megasas_free_cmds(instance);
6564
6565 iounmap(instance->reg_set);
6566
6567 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6568 }
6569
6570 /**
6571 * megasas_get_seq_num - Gets latest event sequence numbers
6572 * @instance: Adapter soft state
6573 * @eli: FW event log sequence numbers information
6574 *
6575 * FW maintains a log of all events in a non-volatile area. Upper layers would
6576 * usually find out the latest sequence number of the events, the seq number at
6577 * the boot etc. They would "read" all the events below the latest seq number
6578 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6579 * number), they would subsribe to AEN (asynchronous event notification) and
6580 * wait for the events to happen.
6581 */
6582 static int
megasas_get_seq_num(struct megasas_instance * instance,struct megasas_evt_log_info * eli)6583 megasas_get_seq_num(struct megasas_instance *instance,
6584 struct megasas_evt_log_info *eli)
6585 {
6586 struct megasas_cmd *cmd;
6587 struct megasas_dcmd_frame *dcmd;
6588 struct megasas_evt_log_info *el_info;
6589 dma_addr_t el_info_h = 0;
6590 int ret;
6591
6592 cmd = megasas_get_cmd(instance);
6593
6594 if (!cmd) {
6595 return -ENOMEM;
6596 }
6597
6598 dcmd = &cmd->frame->dcmd;
6599 el_info = dma_alloc_coherent(&instance->pdev->dev,
6600 sizeof(struct megasas_evt_log_info),
6601 &el_info_h, GFP_KERNEL);
6602 if (!el_info) {
6603 megasas_return_cmd(instance, cmd);
6604 return -ENOMEM;
6605 }
6606
6607 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6608
6609 dcmd->cmd = MFI_CMD_DCMD;
6610 dcmd->cmd_status = 0x0;
6611 dcmd->sge_count = 1;
6612 dcmd->flags = MFI_FRAME_DIR_READ;
6613 dcmd->timeout = 0;
6614 dcmd->pad_0 = 0;
6615 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6616 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6617
6618 megasas_set_dma_settings(instance, dcmd, el_info_h,
6619 sizeof(struct megasas_evt_log_info));
6620
6621 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6622 if (ret != DCMD_SUCCESS) {
6623 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6624 __func__, __LINE__);
6625 goto dcmd_failed;
6626 }
6627
6628 /*
6629 * Copy the data back into callers buffer
6630 */
6631 eli->newest_seq_num = el_info->newest_seq_num;
6632 eli->oldest_seq_num = el_info->oldest_seq_num;
6633 eli->clear_seq_num = el_info->clear_seq_num;
6634 eli->shutdown_seq_num = el_info->shutdown_seq_num;
6635 eli->boot_seq_num = el_info->boot_seq_num;
6636
6637 dcmd_failed:
6638 dma_free_coherent(&instance->pdev->dev,
6639 sizeof(struct megasas_evt_log_info),
6640 el_info, el_info_h);
6641
6642 megasas_return_cmd(instance, cmd);
6643
6644 return ret;
6645 }
6646
6647 /**
6648 * megasas_register_aen - Registers for asynchronous event notification
6649 * @instance: Adapter soft state
6650 * @seq_num: The starting sequence number
6651 * @class_locale_word: Class of the event
6652 *
6653 * This function subscribes for AEN for events beyond the @seq_num. It requests
6654 * to be notified if and only if the event is of type @class_locale
6655 */
6656 static int
megasas_register_aen(struct megasas_instance * instance,u32 seq_num,u32 class_locale_word)6657 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6658 u32 class_locale_word)
6659 {
6660 int ret_val;
6661 struct megasas_cmd *cmd;
6662 struct megasas_dcmd_frame *dcmd;
6663 union megasas_evt_class_locale curr_aen;
6664 union megasas_evt_class_locale prev_aen;
6665
6666 /*
6667 * If there an AEN pending already (aen_cmd), check if the
6668 * class_locale of that pending AEN is inclusive of the new
6669 * AEN request we currently have. If it is, then we don't have
6670 * to do anything. In other words, whichever events the current
6671 * AEN request is subscribing to, have already been subscribed
6672 * to.
6673 *
6674 * If the old_cmd is _not_ inclusive, then we have to abort
6675 * that command, form a class_locale that is superset of both
6676 * old and current and re-issue to the FW
6677 */
6678
6679 curr_aen.word = class_locale_word;
6680
6681 if (instance->aen_cmd) {
6682
6683 prev_aen.word =
6684 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6685
6686 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6687 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6688 dev_info(&instance->pdev->dev,
6689 "%s %d out of range class %d send by application\n",
6690 __func__, __LINE__, curr_aen.members.class);
6691 return 0;
6692 }
6693
6694 /*
6695 * A class whose enum value is smaller is inclusive of all
6696 * higher values. If a PROGRESS (= -1) was previously
6697 * registered, then a new registration requests for higher
6698 * classes need not be sent to FW. They are automatically
6699 * included.
6700 *
6701 * Locale numbers don't have such hierarchy. They are bitmap
6702 * values
6703 */
6704 if ((prev_aen.members.class <= curr_aen.members.class) &&
6705 !((prev_aen.members.locale & curr_aen.members.locale) ^
6706 curr_aen.members.locale)) {
6707 /*
6708 * Previously issued event registration includes
6709 * current request. Nothing to do.
6710 */
6711 return 0;
6712 } else {
6713 curr_aen.members.locale |= prev_aen.members.locale;
6714
6715 if (prev_aen.members.class < curr_aen.members.class)
6716 curr_aen.members.class = prev_aen.members.class;
6717
6718 instance->aen_cmd->abort_aen = 1;
6719 ret_val = megasas_issue_blocked_abort_cmd(instance,
6720 instance->
6721 aen_cmd, 30);
6722
6723 if (ret_val) {
6724 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6725 "previous AEN command\n");
6726 return ret_val;
6727 }
6728 }
6729 }
6730
6731 cmd = megasas_get_cmd(instance);
6732
6733 if (!cmd)
6734 return -ENOMEM;
6735
6736 dcmd = &cmd->frame->dcmd;
6737
6738 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6739
6740 /*
6741 * Prepare DCMD for aen registration
6742 */
6743 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6744
6745 dcmd->cmd = MFI_CMD_DCMD;
6746 dcmd->cmd_status = 0x0;
6747 dcmd->sge_count = 1;
6748 dcmd->flags = MFI_FRAME_DIR_READ;
6749 dcmd->timeout = 0;
6750 dcmd->pad_0 = 0;
6751 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6752 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6753 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6754 instance->last_seq_num = seq_num;
6755 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6756
6757 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6758 sizeof(struct megasas_evt_detail));
6759
6760 if (instance->aen_cmd != NULL) {
6761 megasas_return_cmd(instance, cmd);
6762 return 0;
6763 }
6764
6765 /*
6766 * Store reference to the cmd used to register for AEN. When an
6767 * application wants us to register for AEN, we have to abort this
6768 * cmd and re-register with a new EVENT LOCALE supplied by that app
6769 */
6770 instance->aen_cmd = cmd;
6771
6772 /*
6773 * Issue the aen registration frame
6774 */
6775 instance->instancet->issue_dcmd(instance, cmd);
6776
6777 return 0;
6778 }
6779
6780 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6781 *
6782 * This DCMD will fetch few properties of LD/system PD defined
6783 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6784 *
6785 * DCMD send by drivers whenever new target is added to the OS.
6786 *
6787 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP
6788 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD.
6789 * 0 = system PD, 1 = LD.
6790 * dcmd.mbox.s[1] - TargetID for LD/system PD.
6791 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES.
6792 *
6793 * @instance: Adapter soft state
6794 * @sdev: OS provided scsi device
6795 *
6796 * Returns 0 on success non-zero on failure.
6797 */
6798 int
megasas_get_target_prop(struct megasas_instance * instance,struct scsi_device * sdev)6799 megasas_get_target_prop(struct megasas_instance *instance,
6800 struct scsi_device *sdev)
6801 {
6802 int ret;
6803 struct megasas_cmd *cmd;
6804 struct megasas_dcmd_frame *dcmd;
6805 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6806 sdev->id;
6807
6808 cmd = megasas_get_cmd(instance);
6809
6810 if (!cmd) {
6811 dev_err(&instance->pdev->dev,
6812 "Failed to get cmd %s\n", __func__);
6813 return -ENOMEM;
6814 }
6815
6816 dcmd = &cmd->frame->dcmd;
6817
6818 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6819 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6820 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6821
6822 dcmd->mbox.s[1] = cpu_to_le16(targetId);
6823 dcmd->cmd = MFI_CMD_DCMD;
6824 dcmd->cmd_status = 0xFF;
6825 dcmd->sge_count = 1;
6826 dcmd->flags = MFI_FRAME_DIR_READ;
6827 dcmd->timeout = 0;
6828 dcmd->pad_0 = 0;
6829 dcmd->data_xfer_len =
6830 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6831 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6832
6833 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6834 sizeof(struct MR_TARGET_PROPERTIES));
6835
6836 if ((instance->adapter_type != MFI_SERIES) &&
6837 !instance->mask_interrupts)
6838 ret = megasas_issue_blocked_cmd(instance,
6839 cmd, MFI_IO_TIMEOUT_SECS);
6840 else
6841 ret = megasas_issue_polled(instance, cmd);
6842
6843 switch (ret) {
6844 case DCMD_TIMEOUT:
6845 switch (dcmd_timeout_ocr_possible(instance)) {
6846 case INITIATE_OCR:
6847 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6848 mutex_unlock(&instance->reset_mutex);
6849 megasas_reset_fusion(instance->host,
6850 MFI_IO_TIMEOUT_OCR);
6851 mutex_lock(&instance->reset_mutex);
6852 break;
6853 case KILL_ADAPTER:
6854 megaraid_sas_kill_hba(instance);
6855 break;
6856 case IGNORE_TIMEOUT:
6857 dev_info(&instance->pdev->dev,
6858 "Ignore DCMD timeout: %s %d\n",
6859 __func__, __LINE__);
6860 break;
6861 }
6862 break;
6863
6864 default:
6865 megasas_return_cmd(instance, cmd);
6866 }
6867 if (ret != DCMD_SUCCESS)
6868 dev_err(&instance->pdev->dev,
6869 "return from %s %d return value %d\n",
6870 __func__, __LINE__, ret);
6871
6872 return ret;
6873 }
6874
6875 /**
6876 * megasas_start_aen - Subscribes to AEN during driver load time
6877 * @instance: Adapter soft state
6878 */
megasas_start_aen(struct megasas_instance * instance)6879 static int megasas_start_aen(struct megasas_instance *instance)
6880 {
6881 struct megasas_evt_log_info eli;
6882 union megasas_evt_class_locale class_locale;
6883
6884 /*
6885 * Get the latest sequence number from FW
6886 */
6887 memset(&eli, 0, sizeof(eli));
6888
6889 if (megasas_get_seq_num(instance, &eli))
6890 return -1;
6891
6892 /*
6893 * Register AEN with FW for latest sequence number plus 1
6894 */
6895 class_locale.members.reserved = 0;
6896 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6897 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6898
6899 return megasas_register_aen(instance,
6900 le32_to_cpu(eli.newest_seq_num) + 1,
6901 class_locale.word);
6902 }
6903
6904 /**
6905 * megasas_io_attach - Attaches this driver to SCSI mid-layer
6906 * @instance: Adapter soft state
6907 */
megasas_io_attach(struct megasas_instance * instance)6908 static int megasas_io_attach(struct megasas_instance *instance)
6909 {
6910 struct Scsi_Host *host = instance->host;
6911
6912 /*
6913 * Export parameters required by SCSI mid-layer
6914 */
6915 host->unique_id = instance->unique_id;
6916 host->can_queue = instance->max_scsi_cmds;
6917 host->this_id = instance->init_id;
6918 host->sg_tablesize = instance->max_num_sge;
6919
6920 if (instance->fw_support_ieee)
6921 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6922
6923 /*
6924 * Check if the module parameter value for max_sectors can be used
6925 */
6926 if (max_sectors && max_sectors < instance->max_sectors_per_req)
6927 instance->max_sectors_per_req = max_sectors;
6928 else {
6929 if (max_sectors) {
6930 if (((instance->pdev->device ==
6931 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6932 (instance->pdev->device ==
6933 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6934 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6935 instance->max_sectors_per_req = max_sectors;
6936 } else {
6937 dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6938 "and <= %d (or < 1MB for GEN2 controller)\n",
6939 instance->max_sectors_per_req);
6940 }
6941 }
6942 }
6943
6944 host->max_sectors = instance->max_sectors_per_req;
6945 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6946 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6947 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6948 host->max_lun = MEGASAS_MAX_LUN;
6949 host->max_cmd_len = 16;
6950
6951 /* Use shared host tagset only for fusion adaptors
6952 * if there are managed interrupts (smp affinity enabled case).
6953 * Single msix_vectors in kdump, so shared host tag is also disabled.
6954 */
6955
6956 host->host_tagset = 0;
6957 host->nr_hw_queues = 1;
6958
6959 if ((instance->adapter_type != MFI_SERIES) &&
6960 (instance->msix_vectors > instance->low_latency_index_start) &&
6961 host_tagset_enable &&
6962 instance->smp_affinity_enable) {
6963 host->host_tagset = 1;
6964 host->nr_hw_queues = instance->msix_vectors -
6965 instance->low_latency_index_start + instance->iopoll_q_count;
6966 if (instance->iopoll_q_count)
6967 host->nr_maps = 3;
6968 } else {
6969 instance->iopoll_q_count = 0;
6970 }
6971
6972 dev_info(&instance->pdev->dev,
6973 "Max firmware commands: %d shared with default "
6974 "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds,
6975 host->nr_hw_queues - instance->iopoll_q_count,
6976 instance->iopoll_q_count);
6977 /*
6978 * Notify the mid-layer about the new controller
6979 */
6980 if (scsi_add_host(host, &instance->pdev->dev)) {
6981 dev_err(&instance->pdev->dev,
6982 "Failed to add host from %s %d\n",
6983 __func__, __LINE__);
6984 return -ENODEV;
6985 }
6986
6987 return 0;
6988 }
6989
6990 /**
6991 * megasas_set_dma_mask - Set DMA mask for supported controllers
6992 *
6993 * @instance: Adapter soft state
6994 * Description:
6995 *
6996 * For Ventura, driver/FW will operate in 63bit DMA addresses.
6997 *
6998 * For invader-
6999 * By default, driver/FW will operate in 32bit DMA addresses
7000 * for consistent DMA mapping but if 32 bit consistent
7001 * DMA mask fails, driver will try with 63 bit consistent
7002 * mask provided FW is true 63bit DMA capable
7003 *
7004 * For older controllers(Thunderbolt and MFI based adapters)-
7005 * driver/FW will operate in 32 bit consistent DMA addresses.
7006 */
7007 static int
megasas_set_dma_mask(struct megasas_instance * instance)7008 megasas_set_dma_mask(struct megasas_instance *instance)
7009 {
7010 u64 consistent_mask;
7011 struct pci_dev *pdev;
7012 u32 scratch_pad_1;
7013
7014 pdev = instance->pdev;
7015 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
7016 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
7017
7018 if (IS_DMA64) {
7019 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
7020 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7021 goto fail_set_dma_mask;
7022
7023 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
7024 (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
7025 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
7026 /*
7027 * If 32 bit DMA mask fails, then try for 64 bit mask
7028 * for FW capable of handling 64 bit DMA.
7029 */
7030 scratch_pad_1 = megasas_readl
7031 (instance, &instance->reg_set->outbound_scratch_pad_1);
7032
7033 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
7034 goto fail_set_dma_mask;
7035 else if (dma_set_mask_and_coherent(&pdev->dev,
7036 DMA_BIT_MASK(63)))
7037 goto fail_set_dma_mask;
7038 }
7039 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7040 goto fail_set_dma_mask;
7041
7042 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
7043 instance->consistent_mask_64bit = false;
7044 else
7045 instance->consistent_mask_64bit = true;
7046
7047 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
7048 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
7049 (instance->consistent_mask_64bit ? "63" : "32"));
7050
7051 return 0;
7052
7053 fail_set_dma_mask:
7054 dev_err(&pdev->dev, "Failed to set DMA mask\n");
7055 return -1;
7056
7057 }
7058
7059 /*
7060 * megasas_set_adapter_type - Set adapter type.
7061 * Supported controllers can be divided in
7062 * different categories-
7063 * enum MR_ADAPTER_TYPE {
7064 * MFI_SERIES = 1,
7065 * THUNDERBOLT_SERIES = 2,
7066 * INVADER_SERIES = 3,
7067 * VENTURA_SERIES = 4,
7068 * AERO_SERIES = 5,
7069 * };
7070 * @instance: Adapter soft state
7071 * return: void
7072 */
megasas_set_adapter_type(struct megasas_instance * instance)7073 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
7074 {
7075 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
7076 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
7077 instance->adapter_type = MFI_SERIES;
7078 } else {
7079 switch (instance->pdev->device) {
7080 case PCI_DEVICE_ID_LSI_AERO_10E1:
7081 case PCI_DEVICE_ID_LSI_AERO_10E2:
7082 case PCI_DEVICE_ID_LSI_AERO_10E5:
7083 case PCI_DEVICE_ID_LSI_AERO_10E6:
7084 instance->adapter_type = AERO_SERIES;
7085 break;
7086 case PCI_DEVICE_ID_LSI_VENTURA:
7087 case PCI_DEVICE_ID_LSI_CRUSADER:
7088 case PCI_DEVICE_ID_LSI_HARPOON:
7089 case PCI_DEVICE_ID_LSI_TOMCAT:
7090 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
7091 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
7092 instance->adapter_type = VENTURA_SERIES;
7093 break;
7094 case PCI_DEVICE_ID_LSI_FUSION:
7095 case PCI_DEVICE_ID_LSI_PLASMA:
7096 instance->adapter_type = THUNDERBOLT_SERIES;
7097 break;
7098 case PCI_DEVICE_ID_LSI_INVADER:
7099 case PCI_DEVICE_ID_LSI_INTRUDER:
7100 case PCI_DEVICE_ID_LSI_INTRUDER_24:
7101 case PCI_DEVICE_ID_LSI_CUTLASS_52:
7102 case PCI_DEVICE_ID_LSI_CUTLASS_53:
7103 case PCI_DEVICE_ID_LSI_FURY:
7104 instance->adapter_type = INVADER_SERIES;
7105 break;
7106 default: /* For all other supported controllers */
7107 instance->adapter_type = MFI_SERIES;
7108 break;
7109 }
7110 }
7111 }
7112
megasas_alloc_mfi_ctrl_mem(struct megasas_instance * instance)7113 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
7114 {
7115 instance->producer = dma_alloc_coherent(&instance->pdev->dev,
7116 sizeof(u32), &instance->producer_h, GFP_KERNEL);
7117 instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
7118 sizeof(u32), &instance->consumer_h, GFP_KERNEL);
7119
7120 if (!instance->producer || !instance->consumer) {
7121 dev_err(&instance->pdev->dev,
7122 "Failed to allocate memory for producer, consumer\n");
7123 return -1;
7124 }
7125
7126 *instance->producer = 0;
7127 *instance->consumer = 0;
7128 return 0;
7129 }
7130
7131 /**
7132 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data
7133 * structures which are not common across MFI
7134 * adapters and fusion adapters.
7135 * For MFI based adapters, allocate producer and
7136 * consumer buffers. For fusion adapters, allocate
7137 * memory for fusion context.
7138 * @instance: Adapter soft state
7139 * return: 0 for SUCCESS
7140 */
megasas_alloc_ctrl_mem(struct megasas_instance * instance)7141 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
7142 {
7143 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
7144 GFP_KERNEL);
7145 if (!instance->reply_map)
7146 return -ENOMEM;
7147
7148 switch (instance->adapter_type) {
7149 case MFI_SERIES:
7150 if (megasas_alloc_mfi_ctrl_mem(instance))
7151 return -ENOMEM;
7152 break;
7153 case AERO_SERIES:
7154 case VENTURA_SERIES:
7155 case THUNDERBOLT_SERIES:
7156 case INVADER_SERIES:
7157 if (megasas_alloc_fusion_context(instance))
7158 return -ENOMEM;
7159 break;
7160 }
7161
7162 return 0;
7163 }
7164
7165 /*
7166 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and
7167 * producer, consumer buffers for MFI adapters
7168 *
7169 * @instance - Adapter soft instance
7170 *
7171 */
megasas_free_ctrl_mem(struct megasas_instance * instance)7172 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
7173 {
7174 kfree(instance->reply_map);
7175 if (instance->adapter_type == MFI_SERIES) {
7176 if (instance->producer)
7177 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7178 instance->producer,
7179 instance->producer_h);
7180 if (instance->consumer)
7181 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7182 instance->consumer,
7183 instance->consumer_h);
7184 } else {
7185 megasas_free_fusion_context(instance);
7186 }
7187 }
7188
7189 /**
7190 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during
7191 * driver load time
7192 *
7193 * @instance: Adapter soft instance
7194 *
7195 * @return: O for SUCCESS
7196 */
7197 static inline
megasas_alloc_ctrl_dma_buffers(struct megasas_instance * instance)7198 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
7199 {
7200 struct pci_dev *pdev = instance->pdev;
7201 struct fusion_context *fusion = instance->ctrl_context;
7202
7203 instance->evt_detail = dma_alloc_coherent(&pdev->dev,
7204 sizeof(struct megasas_evt_detail),
7205 &instance->evt_detail_h, GFP_KERNEL);
7206
7207 if (!instance->evt_detail) {
7208 dev_err(&instance->pdev->dev,
7209 "Failed to allocate event detail buffer\n");
7210 return -ENOMEM;
7211 }
7212
7213 if (fusion) {
7214 fusion->ioc_init_request =
7215 dma_alloc_coherent(&pdev->dev,
7216 sizeof(struct MPI2_IOC_INIT_REQUEST),
7217 &fusion->ioc_init_request_phys,
7218 GFP_KERNEL);
7219
7220 if (!fusion->ioc_init_request) {
7221 dev_err(&pdev->dev,
7222 "Failed to allocate ioc init request\n");
7223 return -ENOMEM;
7224 }
7225
7226 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
7227 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7228 &instance->snapdump_prop_h, GFP_KERNEL);
7229
7230 if (!instance->snapdump_prop)
7231 dev_err(&pdev->dev,
7232 "Failed to allocate snapdump properties buffer\n");
7233
7234 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
7235 HOST_DEVICE_LIST_SZ,
7236 &instance->host_device_list_buf_h,
7237 GFP_KERNEL);
7238
7239 if (!instance->host_device_list_buf) {
7240 dev_err(&pdev->dev,
7241 "Failed to allocate targetid list buffer\n");
7242 return -ENOMEM;
7243 }
7244
7245 }
7246
7247 instance->pd_list_buf =
7248 dma_alloc_coherent(&pdev->dev,
7249 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7250 &instance->pd_list_buf_h, GFP_KERNEL);
7251
7252 if (!instance->pd_list_buf) {
7253 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
7254 return -ENOMEM;
7255 }
7256
7257 instance->ctrl_info_buf =
7258 dma_alloc_coherent(&pdev->dev,
7259 sizeof(struct megasas_ctrl_info),
7260 &instance->ctrl_info_buf_h, GFP_KERNEL);
7261
7262 if (!instance->ctrl_info_buf) {
7263 dev_err(&pdev->dev,
7264 "Failed to allocate controller info buffer\n");
7265 return -ENOMEM;
7266 }
7267
7268 instance->ld_list_buf =
7269 dma_alloc_coherent(&pdev->dev,
7270 sizeof(struct MR_LD_LIST),
7271 &instance->ld_list_buf_h, GFP_KERNEL);
7272
7273 if (!instance->ld_list_buf) {
7274 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7275 return -ENOMEM;
7276 }
7277
7278 instance->ld_targetid_list_buf =
7279 dma_alloc_coherent(&pdev->dev,
7280 sizeof(struct MR_LD_TARGETID_LIST),
7281 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7282
7283 if (!instance->ld_targetid_list_buf) {
7284 dev_err(&pdev->dev,
7285 "Failed to allocate LD targetid list buffer\n");
7286 return -ENOMEM;
7287 }
7288
7289 if (!reset_devices) {
7290 instance->system_info_buf =
7291 dma_alloc_coherent(&pdev->dev,
7292 sizeof(struct MR_DRV_SYSTEM_INFO),
7293 &instance->system_info_h, GFP_KERNEL);
7294 instance->pd_info =
7295 dma_alloc_coherent(&pdev->dev,
7296 sizeof(struct MR_PD_INFO),
7297 &instance->pd_info_h, GFP_KERNEL);
7298 instance->tgt_prop =
7299 dma_alloc_coherent(&pdev->dev,
7300 sizeof(struct MR_TARGET_PROPERTIES),
7301 &instance->tgt_prop_h, GFP_KERNEL);
7302 instance->crash_dump_buf =
7303 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7304 &instance->crash_dump_h, GFP_KERNEL);
7305
7306 if (!instance->system_info_buf)
7307 dev_err(&instance->pdev->dev,
7308 "Failed to allocate system info buffer\n");
7309
7310 if (!instance->pd_info)
7311 dev_err(&instance->pdev->dev,
7312 "Failed to allocate pd_info buffer\n");
7313
7314 if (!instance->tgt_prop)
7315 dev_err(&instance->pdev->dev,
7316 "Failed to allocate tgt_prop buffer\n");
7317
7318 if (!instance->crash_dump_buf)
7319 dev_err(&instance->pdev->dev,
7320 "Failed to allocate crash dump buffer\n");
7321 }
7322
7323 return 0;
7324 }
7325
7326 /*
7327 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated
7328 * during driver load time
7329 *
7330 * @instance- Adapter soft instance
7331 *
7332 */
7333 static inline
megasas_free_ctrl_dma_buffers(struct megasas_instance * instance)7334 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7335 {
7336 struct pci_dev *pdev = instance->pdev;
7337 struct fusion_context *fusion = instance->ctrl_context;
7338
7339 if (instance->evt_detail)
7340 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7341 instance->evt_detail,
7342 instance->evt_detail_h);
7343
7344 if (fusion && fusion->ioc_init_request)
7345 dma_free_coherent(&pdev->dev,
7346 sizeof(struct MPI2_IOC_INIT_REQUEST),
7347 fusion->ioc_init_request,
7348 fusion->ioc_init_request_phys);
7349
7350 if (instance->pd_list_buf)
7351 dma_free_coherent(&pdev->dev,
7352 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7353 instance->pd_list_buf,
7354 instance->pd_list_buf_h);
7355
7356 if (instance->ld_list_buf)
7357 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7358 instance->ld_list_buf,
7359 instance->ld_list_buf_h);
7360
7361 if (instance->ld_targetid_list_buf)
7362 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7363 instance->ld_targetid_list_buf,
7364 instance->ld_targetid_list_buf_h);
7365
7366 if (instance->ctrl_info_buf)
7367 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7368 instance->ctrl_info_buf,
7369 instance->ctrl_info_buf_h);
7370
7371 if (instance->system_info_buf)
7372 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7373 instance->system_info_buf,
7374 instance->system_info_h);
7375
7376 if (instance->pd_info)
7377 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7378 instance->pd_info, instance->pd_info_h);
7379
7380 if (instance->tgt_prop)
7381 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7382 instance->tgt_prop, instance->tgt_prop_h);
7383
7384 if (instance->crash_dump_buf)
7385 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7386 instance->crash_dump_buf,
7387 instance->crash_dump_h);
7388
7389 if (instance->snapdump_prop)
7390 dma_free_coherent(&pdev->dev,
7391 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7392 instance->snapdump_prop,
7393 instance->snapdump_prop_h);
7394
7395 if (instance->host_device_list_buf)
7396 dma_free_coherent(&pdev->dev,
7397 HOST_DEVICE_LIST_SZ,
7398 instance->host_device_list_buf,
7399 instance->host_device_list_buf_h);
7400
7401 }
7402
7403 /*
7404 * megasas_init_ctrl_params - Initialize controller's instance
7405 * parameters before FW init
7406 * @instance - Adapter soft instance
7407 * @return - void
7408 */
megasas_init_ctrl_params(struct megasas_instance * instance)7409 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7410 {
7411 instance->fw_crash_state = UNAVAILABLE;
7412
7413 megasas_poll_wait_aen = 0;
7414 instance->issuepend_done = 1;
7415 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7416
7417 /*
7418 * Initialize locks and queues
7419 */
7420 INIT_LIST_HEAD(&instance->cmd_pool);
7421 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7422
7423 atomic_set(&instance->fw_outstanding, 0);
7424 atomic64_set(&instance->total_io_count, 0);
7425
7426 init_waitqueue_head(&instance->int_cmd_wait_q);
7427 init_waitqueue_head(&instance->abort_cmd_wait_q);
7428
7429 mutex_init(&instance->crashdump_lock);
7430 spin_lock_init(&instance->mfi_pool_lock);
7431 spin_lock_init(&instance->hba_lock);
7432 spin_lock_init(&instance->stream_lock);
7433 spin_lock_init(&instance->completion_lock);
7434
7435 mutex_init(&instance->reset_mutex);
7436
7437 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7438 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7439 instance->flag_ieee = 1;
7440
7441 instance->flag = 0;
7442 instance->unload = 1;
7443 instance->last_time = 0;
7444 instance->disableOnlineCtrlReset = 1;
7445 instance->UnevenSpanSupport = 0;
7446 instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7447 instance->msix_load_balance = false;
7448
7449 if (instance->adapter_type != MFI_SERIES)
7450 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7451 else
7452 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7453 }
7454
7455 /**
7456 * megasas_probe_one - PCI hotplug entry point
7457 * @pdev: PCI device structure
7458 * @id: PCI ids of supported hotplugged adapter
7459 */
megasas_probe_one(struct pci_dev * pdev,const struct pci_device_id * id)7460 static int megasas_probe_one(struct pci_dev *pdev,
7461 const struct pci_device_id *id)
7462 {
7463 int rval, pos;
7464 struct Scsi_Host *host;
7465 struct megasas_instance *instance;
7466 u16 control = 0;
7467
7468 switch (pdev->device) {
7469 case PCI_DEVICE_ID_LSI_AERO_10E0:
7470 case PCI_DEVICE_ID_LSI_AERO_10E3:
7471 case PCI_DEVICE_ID_LSI_AERO_10E4:
7472 case PCI_DEVICE_ID_LSI_AERO_10E7:
7473 dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7474 return 1;
7475 case PCI_DEVICE_ID_LSI_AERO_10E1:
7476 case PCI_DEVICE_ID_LSI_AERO_10E5:
7477 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7478 break;
7479 }
7480
7481 /* Reset MSI-X in the kdump kernel */
7482 if (reset_devices) {
7483 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7484 if (pos) {
7485 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7486 &control);
7487 if (control & PCI_MSIX_FLAGS_ENABLE) {
7488 dev_info(&pdev->dev, "resetting MSI-X\n");
7489 pci_write_config_word(pdev,
7490 pos + PCI_MSIX_FLAGS,
7491 control &
7492 ~PCI_MSIX_FLAGS_ENABLE);
7493 }
7494 }
7495 }
7496
7497 /*
7498 * PCI prepping: enable device set bus mastering and dma mask
7499 */
7500 rval = pci_enable_device_mem(pdev);
7501
7502 if (rval) {
7503 return rval;
7504 }
7505
7506 pci_set_master(pdev);
7507
7508 host = scsi_host_alloc(&megasas_template,
7509 sizeof(struct megasas_instance));
7510
7511 if (!host) {
7512 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7513 goto fail_alloc_instance;
7514 }
7515
7516 instance = (struct megasas_instance *)host->hostdata;
7517 memset(instance, 0, sizeof(*instance));
7518 atomic_set(&instance->fw_reset_no_pci_access, 0);
7519
7520 /*
7521 * Initialize PCI related and misc parameters
7522 */
7523 instance->pdev = pdev;
7524 instance->host = host;
7525 instance->unique_id = pci_dev_id(pdev);
7526 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7527
7528 megasas_set_adapter_type(instance);
7529
7530 /*
7531 * Initialize MFI Firmware
7532 */
7533 if (megasas_init_fw(instance))
7534 goto fail_init_mfi;
7535
7536 if (instance->requestorId) {
7537 if (instance->PlasmaFW111) {
7538 instance->vf_affiliation_111 =
7539 dma_alloc_coherent(&pdev->dev,
7540 sizeof(struct MR_LD_VF_AFFILIATION_111),
7541 &instance->vf_affiliation_111_h,
7542 GFP_KERNEL);
7543 if (!instance->vf_affiliation_111)
7544 dev_warn(&pdev->dev, "Can't allocate "
7545 "memory for VF affiliation buffer\n");
7546 } else {
7547 instance->vf_affiliation =
7548 dma_alloc_coherent(&pdev->dev,
7549 (MAX_LOGICAL_DRIVES + 1) *
7550 sizeof(struct MR_LD_VF_AFFILIATION),
7551 &instance->vf_affiliation_h,
7552 GFP_KERNEL);
7553 if (!instance->vf_affiliation)
7554 dev_warn(&pdev->dev, "Can't allocate "
7555 "memory for VF affiliation buffer\n");
7556 }
7557 }
7558
7559 /*
7560 * Store instance in PCI softstate
7561 */
7562 pci_set_drvdata(pdev, instance);
7563
7564 /*
7565 * Add this controller to megasas_mgmt_info structure so that it
7566 * can be exported to management applications
7567 */
7568 megasas_mgmt_info.count++;
7569 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7570 megasas_mgmt_info.max_index++;
7571
7572 /*
7573 * Register with SCSI mid-layer
7574 */
7575 if (megasas_io_attach(instance))
7576 goto fail_io_attach;
7577
7578 instance->unload = 0;
7579 /*
7580 * Trigger SCSI to scan our drives
7581 */
7582 if (!instance->enable_fw_dev_list ||
7583 (instance->host_device_list_buf->count > 0))
7584 scsi_scan_host(host);
7585
7586 /*
7587 * Initiate AEN (Asynchronous Event Notification)
7588 */
7589 if (megasas_start_aen(instance)) {
7590 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7591 goto fail_start_aen;
7592 }
7593
7594 megasas_setup_debugfs(instance);
7595
7596 /* Get current SR-IOV LD/VF affiliation */
7597 if (instance->requestorId)
7598 megasas_get_ld_vf_affiliation(instance, 1);
7599
7600 return 0;
7601
7602 fail_start_aen:
7603 instance->unload = 1;
7604 scsi_remove_host(instance->host);
7605 fail_io_attach:
7606 megasas_mgmt_info.count--;
7607 megasas_mgmt_info.max_index--;
7608 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7609
7610 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7611 del_timer_sync(&instance->sriov_heartbeat_timer);
7612
7613 instance->instancet->disable_intr(instance);
7614 megasas_destroy_irqs(instance);
7615
7616 if (instance->adapter_type != MFI_SERIES)
7617 megasas_release_fusion(instance);
7618 else
7619 megasas_release_mfi(instance);
7620
7621 if (instance->msix_vectors)
7622 pci_free_irq_vectors(instance->pdev);
7623 instance->msix_vectors = 0;
7624
7625 if (instance->fw_crash_state != UNAVAILABLE)
7626 megasas_free_host_crash_buffer(instance);
7627
7628 if (instance->adapter_type != MFI_SERIES)
7629 megasas_fusion_stop_watchdog(instance);
7630 fail_init_mfi:
7631 scsi_host_put(host);
7632 fail_alloc_instance:
7633 pci_disable_device(pdev);
7634
7635 return -ENODEV;
7636 }
7637
7638 /**
7639 * megasas_flush_cache - Requests FW to flush all its caches
7640 * @instance: Adapter soft state
7641 */
megasas_flush_cache(struct megasas_instance * instance)7642 static void megasas_flush_cache(struct megasas_instance *instance)
7643 {
7644 struct megasas_cmd *cmd;
7645 struct megasas_dcmd_frame *dcmd;
7646
7647 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7648 return;
7649
7650 cmd = megasas_get_cmd(instance);
7651
7652 if (!cmd)
7653 return;
7654
7655 dcmd = &cmd->frame->dcmd;
7656
7657 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7658
7659 dcmd->cmd = MFI_CMD_DCMD;
7660 dcmd->cmd_status = 0x0;
7661 dcmd->sge_count = 0;
7662 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7663 dcmd->timeout = 0;
7664 dcmd->pad_0 = 0;
7665 dcmd->data_xfer_len = 0;
7666 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7667 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7668
7669 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7670 != DCMD_SUCCESS) {
7671 dev_err(&instance->pdev->dev,
7672 "return from %s %d\n", __func__, __LINE__);
7673 return;
7674 }
7675
7676 megasas_return_cmd(instance, cmd);
7677 }
7678
7679 /**
7680 * megasas_shutdown_controller - Instructs FW to shutdown the controller
7681 * @instance: Adapter soft state
7682 * @opcode: Shutdown/Hibernate
7683 */
megasas_shutdown_controller(struct megasas_instance * instance,u32 opcode)7684 static void megasas_shutdown_controller(struct megasas_instance *instance,
7685 u32 opcode)
7686 {
7687 struct megasas_cmd *cmd;
7688 struct megasas_dcmd_frame *dcmd;
7689
7690 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7691 return;
7692
7693 cmd = megasas_get_cmd(instance);
7694
7695 if (!cmd)
7696 return;
7697
7698 if (instance->aen_cmd)
7699 megasas_issue_blocked_abort_cmd(instance,
7700 instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7701 if (instance->map_update_cmd)
7702 megasas_issue_blocked_abort_cmd(instance,
7703 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7704 if (instance->jbod_seq_cmd)
7705 megasas_issue_blocked_abort_cmd(instance,
7706 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7707
7708 dcmd = &cmd->frame->dcmd;
7709
7710 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7711
7712 dcmd->cmd = MFI_CMD_DCMD;
7713 dcmd->cmd_status = 0x0;
7714 dcmd->sge_count = 0;
7715 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7716 dcmd->timeout = 0;
7717 dcmd->pad_0 = 0;
7718 dcmd->data_xfer_len = 0;
7719 dcmd->opcode = cpu_to_le32(opcode);
7720
7721 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7722 != DCMD_SUCCESS) {
7723 dev_err(&instance->pdev->dev,
7724 "return from %s %d\n", __func__, __LINE__);
7725 return;
7726 }
7727
7728 megasas_return_cmd(instance, cmd);
7729 }
7730
7731 /**
7732 * megasas_suspend - driver suspend entry point
7733 * @dev: Device structure
7734 */
7735 static int __maybe_unused
megasas_suspend(struct device * dev)7736 megasas_suspend(struct device *dev)
7737 {
7738 struct megasas_instance *instance;
7739
7740 instance = dev_get_drvdata(dev);
7741
7742 if (!instance)
7743 return 0;
7744
7745 instance->unload = 1;
7746
7747 dev_info(dev, "%s is called\n", __func__);
7748
7749 /* Shutdown SR-IOV heartbeat timer */
7750 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7751 del_timer_sync(&instance->sriov_heartbeat_timer);
7752
7753 /* Stop the FW fault detection watchdog */
7754 if (instance->adapter_type != MFI_SERIES)
7755 megasas_fusion_stop_watchdog(instance);
7756
7757 megasas_flush_cache(instance);
7758 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7759
7760 /* cancel the delayed work if this work still in queue */
7761 if (instance->ev != NULL) {
7762 struct megasas_aen_event *ev = instance->ev;
7763 cancel_delayed_work_sync(&ev->hotplug_work);
7764 instance->ev = NULL;
7765 }
7766
7767 tasklet_kill(&instance->isr_tasklet);
7768
7769 pci_set_drvdata(instance->pdev, instance);
7770 instance->instancet->disable_intr(instance);
7771
7772 megasas_destroy_irqs(instance);
7773
7774 if (instance->msix_vectors)
7775 pci_free_irq_vectors(instance->pdev);
7776
7777 return 0;
7778 }
7779
7780 /**
7781 * megasas_resume- driver resume entry point
7782 * @dev: Device structure
7783 */
7784 static int __maybe_unused
megasas_resume(struct device * dev)7785 megasas_resume(struct device *dev)
7786 {
7787 int rval;
7788 struct Scsi_Host *host;
7789 struct megasas_instance *instance;
7790 u32 status_reg;
7791
7792 instance = dev_get_drvdata(dev);
7793
7794 if (!instance)
7795 return 0;
7796
7797 host = instance->host;
7798
7799 dev_info(dev, "%s is called\n", __func__);
7800
7801 /*
7802 * We expect the FW state to be READY
7803 */
7804
7805 if (megasas_transition_to_ready(instance, 0)) {
7806 dev_info(&instance->pdev->dev,
7807 "Failed to transition controller to ready from %s!\n",
7808 __func__);
7809 if (instance->adapter_type != MFI_SERIES) {
7810 status_reg =
7811 instance->instancet->read_fw_status_reg(instance);
7812 if (!(status_reg & MFI_RESET_ADAPTER) ||
7813 ((megasas_adp_reset_wait_for_ready
7814 (instance, true, 0)) == FAILED))
7815 goto fail_ready_state;
7816 } else {
7817 atomic_set(&instance->fw_reset_no_pci_access, 1);
7818 instance->instancet->adp_reset
7819 (instance, instance->reg_set);
7820 atomic_set(&instance->fw_reset_no_pci_access, 0);
7821
7822 /* waiting for about 30 seconds before retry */
7823 ssleep(30);
7824
7825 if (megasas_transition_to_ready(instance, 0))
7826 goto fail_ready_state;
7827 }
7828
7829 dev_info(&instance->pdev->dev,
7830 "FW restarted successfully from %s!\n",
7831 __func__);
7832 }
7833 if (megasas_set_dma_mask(instance))
7834 goto fail_set_dma_mask;
7835
7836 /*
7837 * Initialize MFI Firmware
7838 */
7839
7840 atomic_set(&instance->fw_outstanding, 0);
7841 atomic_set(&instance->ldio_outstanding, 0);
7842
7843 /* Now re-enable MSI-X */
7844 if (instance->msix_vectors)
7845 megasas_alloc_irq_vectors(instance);
7846
7847 if (!instance->msix_vectors) {
7848 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1,
7849 PCI_IRQ_INTX);
7850 if (rval < 0)
7851 goto fail_reenable_msix;
7852 }
7853
7854 megasas_setup_reply_map(instance);
7855
7856 if (instance->adapter_type != MFI_SERIES) {
7857 megasas_reset_reply_desc(instance);
7858 if (megasas_ioc_init_fusion(instance)) {
7859 megasas_free_cmds(instance);
7860 megasas_free_cmds_fusion(instance);
7861 goto fail_init_mfi;
7862 }
7863 if (!megasas_get_map_info(instance))
7864 megasas_sync_map_info(instance);
7865 } else {
7866 *instance->producer = 0;
7867 *instance->consumer = 0;
7868 if (megasas_issue_init_mfi(instance))
7869 goto fail_init_mfi;
7870 }
7871
7872 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7873 goto fail_init_mfi;
7874
7875 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7876 (unsigned long)instance);
7877
7878 if (instance->msix_vectors ?
7879 megasas_setup_irqs_msix(instance, 0) :
7880 megasas_setup_irqs_ioapic(instance))
7881 goto fail_init_mfi;
7882
7883 if (instance->adapter_type != MFI_SERIES)
7884 megasas_setup_irq_poll(instance);
7885
7886 /* Re-launch SR-IOV heartbeat timer */
7887 if (instance->requestorId) {
7888 if (!megasas_sriov_start_heartbeat(instance, 0))
7889 megasas_start_timer(instance);
7890 else {
7891 instance->skip_heartbeat_timer_del = 1;
7892 goto fail_init_mfi;
7893 }
7894 }
7895
7896 instance->instancet->enable_intr(instance);
7897 megasas_setup_jbod_map(instance);
7898 instance->unload = 0;
7899
7900 /*
7901 * Initiate AEN (Asynchronous Event Notification)
7902 */
7903 if (megasas_start_aen(instance))
7904 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7905
7906 /* Re-launch FW fault watchdog */
7907 if (instance->adapter_type != MFI_SERIES)
7908 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7909 goto fail_start_watchdog;
7910
7911 return 0;
7912
7913 fail_start_watchdog:
7914 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7915 del_timer_sync(&instance->sriov_heartbeat_timer);
7916 fail_init_mfi:
7917 megasas_free_ctrl_dma_buffers(instance);
7918 megasas_free_ctrl_mem(instance);
7919 scsi_host_put(host);
7920
7921 fail_reenable_msix:
7922 fail_set_dma_mask:
7923 fail_ready_state:
7924
7925 return -ENODEV;
7926 }
7927
7928 static inline int
megasas_wait_for_adapter_operational(struct megasas_instance * instance)7929 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7930 {
7931 int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7932 int i;
7933 u8 adp_state;
7934
7935 for (i = 0; i < wait_time; i++) {
7936 adp_state = atomic_read(&instance->adprecovery);
7937 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7938 (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7939 break;
7940
7941 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7942 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7943
7944 msleep(1000);
7945 }
7946
7947 if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7948 dev_info(&instance->pdev->dev,
7949 "%s HBA failed to become operational, adp_state %d\n",
7950 __func__, adp_state);
7951 return 1;
7952 }
7953
7954 return 0;
7955 }
7956
7957 /**
7958 * megasas_detach_one - PCI hot"un"plug entry point
7959 * @pdev: PCI device structure
7960 */
megasas_detach_one(struct pci_dev * pdev)7961 static void megasas_detach_one(struct pci_dev *pdev)
7962 {
7963 int i;
7964 struct Scsi_Host *host;
7965 struct megasas_instance *instance;
7966 struct fusion_context *fusion;
7967 size_t pd_seq_map_sz;
7968
7969 instance = pci_get_drvdata(pdev);
7970
7971 if (!instance)
7972 return;
7973
7974 host = instance->host;
7975 fusion = instance->ctrl_context;
7976
7977 /* Shutdown SR-IOV heartbeat timer */
7978 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7979 del_timer_sync(&instance->sriov_heartbeat_timer);
7980
7981 /* Stop the FW fault detection watchdog */
7982 if (instance->adapter_type != MFI_SERIES)
7983 megasas_fusion_stop_watchdog(instance);
7984
7985 if (instance->fw_crash_state != UNAVAILABLE)
7986 megasas_free_host_crash_buffer(instance);
7987 scsi_remove_host(instance->host);
7988 instance->unload = 1;
7989
7990 if (megasas_wait_for_adapter_operational(instance))
7991 goto skip_firing_dcmds;
7992
7993 megasas_flush_cache(instance);
7994 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7995
7996 skip_firing_dcmds:
7997 /* cancel the delayed work if this work still in queue*/
7998 if (instance->ev != NULL) {
7999 struct megasas_aen_event *ev = instance->ev;
8000 cancel_delayed_work_sync(&ev->hotplug_work);
8001 instance->ev = NULL;
8002 }
8003
8004 /* cancel all wait events */
8005 wake_up_all(&instance->int_cmd_wait_q);
8006
8007 tasklet_kill(&instance->isr_tasklet);
8008
8009 /*
8010 * Take the instance off the instance array. Note that we will not
8011 * decrement the max_index. We let this array be sparse array
8012 */
8013 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8014 if (megasas_mgmt_info.instance[i] == instance) {
8015 megasas_mgmt_info.count--;
8016 megasas_mgmt_info.instance[i] = NULL;
8017
8018 break;
8019 }
8020 }
8021
8022 instance->instancet->disable_intr(instance);
8023
8024 megasas_destroy_irqs(instance);
8025
8026 if (instance->msix_vectors)
8027 pci_free_irq_vectors(instance->pdev);
8028
8029 if (instance->adapter_type >= VENTURA_SERIES) {
8030 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
8031 kfree(fusion->stream_detect_by_ld[i]);
8032 kfree(fusion->stream_detect_by_ld);
8033 fusion->stream_detect_by_ld = NULL;
8034 }
8035
8036
8037 if (instance->adapter_type != MFI_SERIES) {
8038 megasas_release_fusion(instance);
8039 pd_seq_map_sz =
8040 struct_size_t(struct MR_PD_CFG_SEQ_NUM_SYNC,
8041 seq, MAX_PHYSICAL_DEVICES);
8042 for (i = 0; i < 2 ; i++) {
8043 if (fusion->ld_map[i])
8044 dma_free_coherent(&instance->pdev->dev,
8045 fusion->max_map_sz,
8046 fusion->ld_map[i],
8047 fusion->ld_map_phys[i]);
8048 if (fusion->ld_drv_map[i]) {
8049 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
8050 vfree(fusion->ld_drv_map[i]);
8051 else
8052 free_pages((ulong)fusion->ld_drv_map[i],
8053 fusion->drv_map_pages);
8054 }
8055
8056 if (fusion->pd_seq_sync[i])
8057 dma_free_coherent(&instance->pdev->dev,
8058 pd_seq_map_sz,
8059 fusion->pd_seq_sync[i],
8060 fusion->pd_seq_phys[i]);
8061 }
8062 } else {
8063 megasas_release_mfi(instance);
8064 }
8065
8066 if (instance->vf_affiliation)
8067 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
8068 sizeof(struct MR_LD_VF_AFFILIATION),
8069 instance->vf_affiliation,
8070 instance->vf_affiliation_h);
8071
8072 if (instance->vf_affiliation_111)
8073 dma_free_coherent(&pdev->dev,
8074 sizeof(struct MR_LD_VF_AFFILIATION_111),
8075 instance->vf_affiliation_111,
8076 instance->vf_affiliation_111_h);
8077
8078 if (instance->hb_host_mem)
8079 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
8080 instance->hb_host_mem,
8081 instance->hb_host_mem_h);
8082
8083 megasas_free_ctrl_dma_buffers(instance);
8084
8085 megasas_free_ctrl_mem(instance);
8086
8087 megasas_destroy_debugfs(instance);
8088
8089 scsi_host_put(host);
8090
8091 pci_disable_device(pdev);
8092 }
8093
8094 /**
8095 * megasas_shutdown - Shutdown entry point
8096 * @pdev: PCI device structure
8097 */
megasas_shutdown(struct pci_dev * pdev)8098 static void megasas_shutdown(struct pci_dev *pdev)
8099 {
8100 struct megasas_instance *instance = pci_get_drvdata(pdev);
8101
8102 if (!instance)
8103 return;
8104
8105 instance->unload = 1;
8106
8107 if (megasas_wait_for_adapter_operational(instance))
8108 goto skip_firing_dcmds;
8109
8110 megasas_flush_cache(instance);
8111 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
8112
8113 skip_firing_dcmds:
8114 instance->instancet->disable_intr(instance);
8115 megasas_destroy_irqs(instance);
8116
8117 if (instance->msix_vectors)
8118 pci_free_irq_vectors(instance->pdev);
8119 }
8120
8121 /*
8122 * megasas_mgmt_open - char node "open" entry point
8123 * @inode: char node inode
8124 * @filep: char node file
8125 */
megasas_mgmt_open(struct inode * inode,struct file * filep)8126 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
8127 {
8128 /*
8129 * Allow only those users with admin rights
8130 */
8131 if (!capable(CAP_SYS_ADMIN))
8132 return -EACCES;
8133
8134 return 0;
8135 }
8136
8137 /*
8138 * megasas_mgmt_fasync - Async notifier registration from applications
8139 * @fd: char node file descriptor number
8140 * @filep: char node file
8141 * @mode: notifier on/off
8142 *
8143 * This function adds the calling process to a driver global queue. When an
8144 * event occurs, SIGIO will be sent to all processes in this queue.
8145 */
megasas_mgmt_fasync(int fd,struct file * filep,int mode)8146 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
8147 {
8148 int rc;
8149
8150 mutex_lock(&megasas_async_queue_mutex);
8151
8152 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
8153
8154 mutex_unlock(&megasas_async_queue_mutex);
8155
8156 if (rc >= 0) {
8157 /* For sanity check when we get ioctl */
8158 filep->private_data = filep;
8159 return 0;
8160 }
8161
8162 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
8163
8164 return rc;
8165 }
8166
8167 /*
8168 * megasas_mgmt_poll - char node "poll" entry point
8169 * @filep: char node file
8170 * @wait: Events to poll for
8171 */
megasas_mgmt_poll(struct file * file,poll_table * wait)8172 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
8173 {
8174 __poll_t mask;
8175 unsigned long flags;
8176
8177 poll_wait(file, &megasas_poll_wait, wait);
8178 spin_lock_irqsave(&poll_aen_lock, flags);
8179 if (megasas_poll_wait_aen)
8180 mask = (EPOLLIN | EPOLLRDNORM);
8181 else
8182 mask = 0;
8183 megasas_poll_wait_aen = 0;
8184 spin_unlock_irqrestore(&poll_aen_lock, flags);
8185 return mask;
8186 }
8187
8188 /*
8189 * megasas_set_crash_dump_params_ioctl:
8190 * Send CRASH_DUMP_MODE DCMD to all controllers
8191 * @cmd: MFI command frame
8192 */
8193
megasas_set_crash_dump_params_ioctl(struct megasas_cmd * cmd)8194 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
8195 {
8196 struct megasas_instance *local_instance;
8197 int i, error = 0;
8198 int crash_support;
8199
8200 crash_support = cmd->frame->dcmd.mbox.w[0];
8201
8202 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8203 local_instance = megasas_mgmt_info.instance[i];
8204 if (local_instance && local_instance->crash_dump_drv_support) {
8205 if ((atomic_read(&local_instance->adprecovery) ==
8206 MEGASAS_HBA_OPERATIONAL) &&
8207 !megasas_set_crash_dump_params(local_instance,
8208 crash_support)) {
8209 local_instance->crash_dump_app_support =
8210 crash_support;
8211 dev_info(&local_instance->pdev->dev,
8212 "Application firmware crash "
8213 "dump mode set success\n");
8214 error = 0;
8215 } else {
8216 dev_info(&local_instance->pdev->dev,
8217 "Application firmware crash "
8218 "dump mode set failed\n");
8219 error = -1;
8220 }
8221 }
8222 }
8223 return error;
8224 }
8225
8226 /**
8227 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
8228 * @instance: Adapter soft state
8229 * @user_ioc: User's ioctl packet
8230 * @ioc: ioctl packet
8231 */
8232 static int
megasas_mgmt_fw_ioctl(struct megasas_instance * instance,struct megasas_iocpacket __user * user_ioc,struct megasas_iocpacket * ioc)8233 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
8234 struct megasas_iocpacket __user * user_ioc,
8235 struct megasas_iocpacket *ioc)
8236 {
8237 struct megasas_sge64 *kern_sge64 = NULL;
8238 struct megasas_sge32 *kern_sge32 = NULL;
8239 struct megasas_cmd *cmd;
8240 void *kbuff_arr[MAX_IOCTL_SGE];
8241 dma_addr_t buf_handle = 0;
8242 int error = 0, i;
8243 void *sense = NULL;
8244 dma_addr_t sense_handle;
8245 void *sense_ptr;
8246 u32 opcode = 0;
8247 int ret = DCMD_SUCCESS;
8248
8249 memset(kbuff_arr, 0, sizeof(kbuff_arr));
8250
8251 if (ioc->sge_count > MAX_IOCTL_SGE) {
8252 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n",
8253 ioc->sge_count, MAX_IOCTL_SGE);
8254 return -EINVAL;
8255 }
8256
8257 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
8258 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
8259 !instance->support_nvme_passthru) ||
8260 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
8261 !instance->support_pci_lane_margining)) {
8262 dev_err(&instance->pdev->dev,
8263 "Received invalid ioctl command 0x%x\n",
8264 ioc->frame.hdr.cmd);
8265 return -ENOTSUPP;
8266 }
8267
8268 cmd = megasas_get_cmd(instance);
8269 if (!cmd) {
8270 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
8271 return -ENOMEM;
8272 }
8273
8274 /*
8275 * User's IOCTL packet has 2 frames (maximum). Copy those two
8276 * frames into our cmd's frames. cmd->frame's context will get
8277 * overwritten when we copy from user's frames. So set that value
8278 * alone separately
8279 */
8280 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
8281 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
8282 cmd->frame->hdr.pad_0 = 0;
8283
8284 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8285
8286 if (instance->consistent_mask_64bit)
8287 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8288 MFI_FRAME_SENSE64));
8289 else
8290 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8291 MFI_FRAME_SENSE64));
8292
8293 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8294 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8295
8296 if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8297 mutex_lock(&instance->reset_mutex);
8298 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8299 megasas_return_cmd(instance, cmd);
8300 mutex_unlock(&instance->reset_mutex);
8301 return -1;
8302 }
8303 mutex_unlock(&instance->reset_mutex);
8304 }
8305
8306 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8307 error = megasas_set_crash_dump_params_ioctl(cmd);
8308 megasas_return_cmd(instance, cmd);
8309 return error;
8310 }
8311
8312 /*
8313 * The management interface between applications and the fw uses
8314 * MFI frames. E.g, RAID configuration changes, LD property changes
8315 * etc are accomplishes through different kinds of MFI frames. The
8316 * driver needs to care only about substituting user buffers with
8317 * kernel buffers in SGLs. The location of SGL is embedded in the
8318 * struct iocpacket itself.
8319 */
8320 if (instance->consistent_mask_64bit)
8321 kern_sge64 = (struct megasas_sge64 *)
8322 ((unsigned long)cmd->frame + ioc->sgl_off);
8323 else
8324 kern_sge32 = (struct megasas_sge32 *)
8325 ((unsigned long)cmd->frame + ioc->sgl_off);
8326
8327 /*
8328 * For each user buffer, create a mirror buffer and copy in
8329 */
8330 for (i = 0; i < ioc->sge_count; i++) {
8331 if (!ioc->sgl[i].iov_len)
8332 continue;
8333
8334 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8335 ioc->sgl[i].iov_len,
8336 &buf_handle, GFP_KERNEL);
8337 if (!kbuff_arr[i]) {
8338 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8339 "kernel SGL buffer for IOCTL\n");
8340 error = -ENOMEM;
8341 goto out;
8342 }
8343
8344 /*
8345 * We don't change the dma_coherent_mask, so
8346 * dma_alloc_coherent only returns 32bit addresses
8347 */
8348 if (instance->consistent_mask_64bit) {
8349 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8350 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8351 } else {
8352 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8353 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8354 }
8355
8356 /*
8357 * We created a kernel buffer corresponding to the
8358 * user buffer. Now copy in from the user buffer
8359 */
8360 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8361 (u32) (ioc->sgl[i].iov_len))) {
8362 error = -EFAULT;
8363 goto out;
8364 }
8365 }
8366
8367 if (ioc->sense_len) {
8368 /* make sure the pointer is part of the frame */
8369 if (ioc->sense_off >
8370 (sizeof(union megasas_frame) - sizeof(__le64))) {
8371 error = -EINVAL;
8372 goto out;
8373 }
8374
8375 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8376 &sense_handle, GFP_KERNEL);
8377 if (!sense) {
8378 error = -ENOMEM;
8379 goto out;
8380 }
8381
8382 /* always store 64 bits regardless of addressing */
8383 sense_ptr = (void *)cmd->frame + ioc->sense_off;
8384 put_unaligned_le64(sense_handle, sense_ptr);
8385 }
8386
8387 /*
8388 * Set the sync_cmd flag so that the ISR knows not to complete this
8389 * cmd to the SCSI mid-layer
8390 */
8391 cmd->sync_cmd = 1;
8392
8393 ret = megasas_issue_blocked_cmd(instance, cmd, 0);
8394 switch (ret) {
8395 case DCMD_INIT:
8396 case DCMD_BUSY:
8397 cmd->sync_cmd = 0;
8398 dev_err(&instance->pdev->dev,
8399 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8400 __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8401 cmd->cmd_status_drv);
8402 error = -EBUSY;
8403 goto out;
8404 }
8405
8406 cmd->sync_cmd = 0;
8407
8408 if (instance->unload == 1) {
8409 dev_info(&instance->pdev->dev, "Driver unload is in progress "
8410 "don't submit data to application\n");
8411 goto out;
8412 }
8413 /*
8414 * copy out the kernel buffers to user buffers
8415 */
8416 for (i = 0; i < ioc->sge_count; i++) {
8417 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8418 ioc->sgl[i].iov_len)) {
8419 error = -EFAULT;
8420 goto out;
8421 }
8422 }
8423
8424 /*
8425 * copy out the sense
8426 */
8427 if (ioc->sense_len) {
8428 void __user *uptr;
8429 /*
8430 * sense_ptr points to the location that has the user
8431 * sense buffer address
8432 */
8433 sense_ptr = (void *)ioc->frame.raw + ioc->sense_off;
8434 if (in_compat_syscall())
8435 uptr = compat_ptr(get_unaligned((compat_uptr_t *)
8436 sense_ptr));
8437 else
8438 uptr = get_unaligned((void __user **)sense_ptr);
8439
8440 if (copy_to_user(uptr, sense, ioc->sense_len)) {
8441 dev_err(&instance->pdev->dev, "Failed to copy out to user "
8442 "sense data\n");
8443 error = -EFAULT;
8444 goto out;
8445 }
8446 }
8447
8448 /*
8449 * copy the status codes returned by the fw
8450 */
8451 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8452 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8453 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8454 error = -EFAULT;
8455 }
8456
8457 out:
8458 if (sense) {
8459 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8460 sense, sense_handle);
8461 }
8462
8463 for (i = 0; i < ioc->sge_count; i++) {
8464 if (kbuff_arr[i]) {
8465 if (instance->consistent_mask_64bit)
8466 dma_free_coherent(&instance->pdev->dev,
8467 le32_to_cpu(kern_sge64[i].length),
8468 kbuff_arr[i],
8469 le64_to_cpu(kern_sge64[i].phys_addr));
8470 else
8471 dma_free_coherent(&instance->pdev->dev,
8472 le32_to_cpu(kern_sge32[i].length),
8473 kbuff_arr[i],
8474 le32_to_cpu(kern_sge32[i].phys_addr));
8475 kbuff_arr[i] = NULL;
8476 }
8477 }
8478
8479 megasas_return_cmd(instance, cmd);
8480 return error;
8481 }
8482
8483 static struct megasas_iocpacket *
megasas_compat_iocpacket_get_user(void __user * arg)8484 megasas_compat_iocpacket_get_user(void __user *arg)
8485 {
8486 struct megasas_iocpacket *ioc;
8487 struct compat_megasas_iocpacket __user *cioc = arg;
8488 size_t size;
8489 int err = -EFAULT;
8490 int i;
8491
8492 ioc = kzalloc(sizeof(*ioc), GFP_KERNEL);
8493 if (!ioc)
8494 return ERR_PTR(-ENOMEM);
8495 size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame);
8496 if (copy_from_user(ioc, arg, size))
8497 goto out;
8498
8499 for (i = 0; i < MAX_IOCTL_SGE; i++) {
8500 compat_uptr_t iov_base;
8501
8502 if (get_user(iov_base, &cioc->sgl[i].iov_base) ||
8503 get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len))
8504 goto out;
8505
8506 ioc->sgl[i].iov_base = compat_ptr(iov_base);
8507 }
8508
8509 return ioc;
8510 out:
8511 kfree(ioc);
8512 return ERR_PTR(err);
8513 }
8514
megasas_mgmt_ioctl_fw(struct file * file,unsigned long arg)8515 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8516 {
8517 struct megasas_iocpacket __user *user_ioc =
8518 (struct megasas_iocpacket __user *)arg;
8519 struct megasas_iocpacket *ioc;
8520 struct megasas_instance *instance;
8521 int error;
8522
8523 if (in_compat_syscall())
8524 ioc = megasas_compat_iocpacket_get_user(user_ioc);
8525 else
8526 ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket));
8527
8528 if (IS_ERR(ioc))
8529 return PTR_ERR(ioc);
8530
8531 instance = megasas_lookup_instance(ioc->host_no);
8532 if (!instance) {
8533 error = -ENODEV;
8534 goto out_kfree_ioc;
8535 }
8536
8537 /* Block ioctls in VF mode */
8538 if (instance->requestorId && !allow_vf_ioctls) {
8539 error = -ENODEV;
8540 goto out_kfree_ioc;
8541 }
8542
8543 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8544 dev_err(&instance->pdev->dev, "Controller in crit error\n");
8545 error = -ENODEV;
8546 goto out_kfree_ioc;
8547 }
8548
8549 if (instance->unload == 1) {
8550 error = -ENODEV;
8551 goto out_kfree_ioc;
8552 }
8553
8554 if (down_interruptible(&instance->ioctl_sem)) {
8555 error = -ERESTARTSYS;
8556 goto out_kfree_ioc;
8557 }
8558
8559 if (megasas_wait_for_adapter_operational(instance)) {
8560 error = -ENODEV;
8561 goto out_up;
8562 }
8563
8564 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8565 out_up:
8566 up(&instance->ioctl_sem);
8567
8568 out_kfree_ioc:
8569 kfree(ioc);
8570 return error;
8571 }
8572
megasas_mgmt_ioctl_aen(struct file * file,unsigned long arg)8573 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8574 {
8575 struct megasas_instance *instance;
8576 struct megasas_aen aen;
8577 int error;
8578
8579 if (file->private_data != file) {
8580 printk(KERN_DEBUG "megasas: fasync_helper was not "
8581 "called first\n");
8582 return -EINVAL;
8583 }
8584
8585 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8586 return -EFAULT;
8587
8588 instance = megasas_lookup_instance(aen.host_no);
8589
8590 if (!instance)
8591 return -ENODEV;
8592
8593 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8594 return -ENODEV;
8595 }
8596
8597 if (instance->unload == 1) {
8598 return -ENODEV;
8599 }
8600
8601 if (megasas_wait_for_adapter_operational(instance))
8602 return -ENODEV;
8603
8604 mutex_lock(&instance->reset_mutex);
8605 error = megasas_register_aen(instance, aen.seq_num,
8606 aen.class_locale_word);
8607 mutex_unlock(&instance->reset_mutex);
8608 return error;
8609 }
8610
8611 /**
8612 * megasas_mgmt_ioctl - char node ioctl entry point
8613 * @file: char device file pointer
8614 * @cmd: ioctl command
8615 * @arg: ioctl command arguments address
8616 */
8617 static long
megasas_mgmt_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8618 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8619 {
8620 switch (cmd) {
8621 case MEGASAS_IOC_FIRMWARE:
8622 return megasas_mgmt_ioctl_fw(file, arg);
8623
8624 case MEGASAS_IOC_GET_AEN:
8625 return megasas_mgmt_ioctl_aen(file, arg);
8626 }
8627
8628 return -ENOTTY;
8629 }
8630
8631 #ifdef CONFIG_COMPAT
8632 static long
megasas_mgmt_compat_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8633 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8634 unsigned long arg)
8635 {
8636 switch (cmd) {
8637 case MEGASAS_IOC_FIRMWARE32:
8638 return megasas_mgmt_ioctl_fw(file, arg);
8639 case MEGASAS_IOC_GET_AEN:
8640 return megasas_mgmt_ioctl_aen(file, arg);
8641 }
8642
8643 return -ENOTTY;
8644 }
8645 #endif
8646
8647 /*
8648 * File operations structure for management interface
8649 */
8650 static const struct file_operations megasas_mgmt_fops = {
8651 .owner = THIS_MODULE,
8652 .open = megasas_mgmt_open,
8653 .fasync = megasas_mgmt_fasync,
8654 .unlocked_ioctl = megasas_mgmt_ioctl,
8655 .poll = megasas_mgmt_poll,
8656 #ifdef CONFIG_COMPAT
8657 .compat_ioctl = megasas_mgmt_compat_ioctl,
8658 #endif
8659 .llseek = noop_llseek,
8660 };
8661
8662 static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume);
8663
8664 /*
8665 * PCI hotplug support registration structure
8666 */
8667 static struct pci_driver megasas_pci_driver = {
8668
8669 .name = "megaraid_sas",
8670 .id_table = megasas_pci_table,
8671 .probe = megasas_probe_one,
8672 .remove = megasas_detach_one,
8673 .driver.pm = &megasas_pm_ops,
8674 .shutdown = megasas_shutdown,
8675 };
8676
8677 /*
8678 * Sysfs driver attributes
8679 */
version_show(struct device_driver * dd,char * buf)8680 static ssize_t version_show(struct device_driver *dd, char *buf)
8681 {
8682 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8683 MEGASAS_VERSION);
8684 }
8685 static DRIVER_ATTR_RO(version);
8686
release_date_show(struct device_driver * dd,char * buf)8687 static ssize_t release_date_show(struct device_driver *dd, char *buf)
8688 {
8689 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8690 MEGASAS_RELDATE);
8691 }
8692 static DRIVER_ATTR_RO(release_date);
8693
support_poll_for_event_show(struct device_driver * dd,char * buf)8694 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8695 {
8696 return sprintf(buf, "%u\n", support_poll_for_event);
8697 }
8698 static DRIVER_ATTR_RO(support_poll_for_event);
8699
support_device_change_show(struct device_driver * dd,char * buf)8700 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8701 {
8702 return sprintf(buf, "%u\n", support_device_change);
8703 }
8704 static DRIVER_ATTR_RO(support_device_change);
8705
dbg_lvl_show(struct device_driver * dd,char * buf)8706 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8707 {
8708 return sprintf(buf, "%u\n", megasas_dbg_lvl);
8709 }
8710
dbg_lvl_store(struct device_driver * dd,const char * buf,size_t count)8711 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8712 size_t count)
8713 {
8714 int retval = count;
8715
8716 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8717 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8718 retval = -EINVAL;
8719 }
8720 return retval;
8721 }
8722 static DRIVER_ATTR_RW(dbg_lvl);
8723
8724 static ssize_t
support_nvme_encapsulation_show(struct device_driver * dd,char * buf)8725 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8726 {
8727 return sprintf(buf, "%u\n", support_nvme_encapsulation);
8728 }
8729
8730 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8731
8732 static ssize_t
support_pci_lane_margining_show(struct device_driver * dd,char * buf)8733 support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8734 {
8735 return sprintf(buf, "%u\n", support_pci_lane_margining);
8736 }
8737
8738 static DRIVER_ATTR_RO(support_pci_lane_margining);
8739
megasas_remove_scsi_device(struct scsi_device * sdev)8740 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8741 {
8742 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8743 scsi_remove_device(sdev);
8744 scsi_device_put(sdev);
8745 }
8746
8747 /**
8748 * megasas_update_device_list - Update the PD and LD device list from FW
8749 * after an AEN event notification
8750 * @instance: Adapter soft state
8751 * @event_type: Indicates type of event (PD or LD event)
8752 *
8753 * @return: Success or failure
8754 *
8755 * Issue DCMDs to Firmware to update the internal device list in driver.
8756 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8757 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8758 */
8759 static
megasas_update_device_list(struct megasas_instance * instance,int event_type)8760 int megasas_update_device_list(struct megasas_instance *instance,
8761 int event_type)
8762 {
8763 int dcmd_ret;
8764
8765 if (instance->enable_fw_dev_list) {
8766 return megasas_host_device_list_query(instance, false);
8767 } else {
8768 if (event_type & SCAN_PD_CHANNEL) {
8769 dcmd_ret = megasas_get_pd_list(instance);
8770 if (dcmd_ret != DCMD_SUCCESS)
8771 return dcmd_ret;
8772 }
8773
8774 if (event_type & SCAN_VD_CHANNEL) {
8775 if (!instance->requestorId ||
8776 megasas_get_ld_vf_affiliation(instance, 0)) {
8777 return megasas_ld_list_query(instance,
8778 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8779 }
8780 }
8781 }
8782 return DCMD_SUCCESS;
8783 }
8784
8785 /**
8786 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8787 * after an AEN event notification
8788 * @instance: Adapter soft state
8789 * @scan_type: Indicates type of devices (PD/LD) to add
8790 * @return void
8791 */
8792 static
megasas_add_remove_devices(struct megasas_instance * instance,int scan_type)8793 void megasas_add_remove_devices(struct megasas_instance *instance,
8794 int scan_type)
8795 {
8796 int i, j;
8797 u16 pd_index = 0;
8798 u16 ld_index = 0;
8799 u16 channel = 0, id = 0;
8800 struct Scsi_Host *host;
8801 struct scsi_device *sdev1;
8802 struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8803 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8804
8805 host = instance->host;
8806
8807 if (instance->enable_fw_dev_list) {
8808 targetid_list = instance->host_device_list_buf;
8809 for (i = 0; i < targetid_list->count; i++) {
8810 targetid_entry = &targetid_list->host_device_list[i];
8811 if (targetid_entry->flags.u.bits.is_sys_pd) {
8812 channel = le16_to_cpu(targetid_entry->target_id) /
8813 MEGASAS_MAX_DEV_PER_CHANNEL;
8814 id = le16_to_cpu(targetid_entry->target_id) %
8815 MEGASAS_MAX_DEV_PER_CHANNEL;
8816 } else {
8817 channel = MEGASAS_MAX_PD_CHANNELS +
8818 (le16_to_cpu(targetid_entry->target_id) /
8819 MEGASAS_MAX_DEV_PER_CHANNEL);
8820 id = le16_to_cpu(targetid_entry->target_id) %
8821 MEGASAS_MAX_DEV_PER_CHANNEL;
8822 }
8823 sdev1 = scsi_device_lookup(host, channel, id, 0);
8824 if (!sdev1) {
8825 scsi_add_device(host, channel, id, 0);
8826 } else {
8827 scsi_device_put(sdev1);
8828 }
8829 }
8830 }
8831
8832 if (scan_type & SCAN_PD_CHANNEL) {
8833 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8834 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8835 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8836 sdev1 = scsi_device_lookup(host, i, j, 0);
8837 if (instance->pd_list[pd_index].driveState ==
8838 MR_PD_STATE_SYSTEM) {
8839 if (!sdev1)
8840 scsi_add_device(host, i, j, 0);
8841 else
8842 scsi_device_put(sdev1);
8843 } else {
8844 if (sdev1)
8845 megasas_remove_scsi_device(sdev1);
8846 }
8847 }
8848 }
8849 }
8850
8851 if (scan_type & SCAN_VD_CHANNEL) {
8852 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8853 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8854 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8855 sdev1 = scsi_device_lookup(host,
8856 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8857 if (instance->ld_ids[ld_index] != 0xff) {
8858 if (!sdev1)
8859 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8860 else
8861 scsi_device_put(sdev1);
8862 } else {
8863 if (sdev1)
8864 megasas_remove_scsi_device(sdev1);
8865 }
8866 }
8867 }
8868 }
8869
8870 }
8871
8872 static void
megasas_aen_polling(struct work_struct * work)8873 megasas_aen_polling(struct work_struct *work)
8874 {
8875 struct megasas_aen_event *ev =
8876 container_of(work, struct megasas_aen_event, hotplug_work.work);
8877 struct megasas_instance *instance = ev->instance;
8878 union megasas_evt_class_locale class_locale;
8879 int event_type = 0;
8880 u32 seq_num;
8881 u16 ld_target_id;
8882 int error;
8883 u8 dcmd_ret = DCMD_SUCCESS;
8884 struct scsi_device *sdev1;
8885
8886 if (!instance) {
8887 printk(KERN_ERR "invalid instance!\n");
8888 kfree(ev);
8889 return;
8890 }
8891
8892 /* Don't run the event workqueue thread if OCR is running */
8893 mutex_lock(&instance->reset_mutex);
8894
8895 instance->ev = NULL;
8896 if (instance->evt_detail) {
8897 megasas_decode_evt(instance);
8898
8899 switch (le32_to_cpu(instance->evt_detail->code)) {
8900
8901 case MR_EVT_PD_INSERTED:
8902 case MR_EVT_PD_REMOVED:
8903 event_type = SCAN_PD_CHANNEL;
8904 break;
8905
8906 case MR_EVT_LD_OFFLINE:
8907 case MR_EVT_LD_DELETED:
8908 ld_target_id = instance->evt_detail->args.ld.target_id;
8909 sdev1 = scsi_device_lookup(instance->host,
8910 MEGASAS_MAX_PD_CHANNELS +
8911 (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL),
8912 (ld_target_id % MEGASAS_MAX_DEV_PER_CHANNEL),
8913 0);
8914 if (sdev1) {
8915 mutex_unlock(&instance->reset_mutex);
8916 megasas_remove_scsi_device(sdev1);
8917 mutex_lock(&instance->reset_mutex);
8918 }
8919
8920 event_type = SCAN_VD_CHANNEL;
8921 break;
8922 case MR_EVT_LD_CREATED:
8923 event_type = SCAN_VD_CHANNEL;
8924 break;
8925
8926 case MR_EVT_CFG_CLEARED:
8927 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8928 case MR_EVT_FOREIGN_CFG_IMPORTED:
8929 case MR_EVT_LD_STATE_CHANGE:
8930 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8931 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8932 instance->host->host_no);
8933 break;
8934
8935 case MR_EVT_CTRL_PROP_CHANGED:
8936 dcmd_ret = megasas_get_ctrl_info(instance);
8937 if (dcmd_ret == DCMD_SUCCESS &&
8938 instance->snapdump_wait_time) {
8939 megasas_get_snapdump_properties(instance);
8940 dev_info(&instance->pdev->dev,
8941 "Snap dump wait time\t: %d\n",
8942 instance->snapdump_wait_time);
8943 }
8944 break;
8945 default:
8946 event_type = 0;
8947 break;
8948 }
8949 } else {
8950 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8951 mutex_unlock(&instance->reset_mutex);
8952 kfree(ev);
8953 return;
8954 }
8955
8956 if (event_type)
8957 dcmd_ret = megasas_update_device_list(instance, event_type);
8958
8959 mutex_unlock(&instance->reset_mutex);
8960
8961 if (event_type && dcmd_ret == DCMD_SUCCESS)
8962 megasas_add_remove_devices(instance, event_type);
8963
8964 if (dcmd_ret == DCMD_SUCCESS)
8965 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8966 else
8967 seq_num = instance->last_seq_num;
8968
8969 /* Register AEN with FW for latest sequence number plus 1 */
8970 class_locale.members.reserved = 0;
8971 class_locale.members.locale = MR_EVT_LOCALE_ALL;
8972 class_locale.members.class = MR_EVT_CLASS_DEBUG;
8973
8974 if (instance->aen_cmd != NULL) {
8975 kfree(ev);
8976 return;
8977 }
8978
8979 mutex_lock(&instance->reset_mutex);
8980 error = megasas_register_aen(instance, seq_num,
8981 class_locale.word);
8982 if (error)
8983 dev_err(&instance->pdev->dev,
8984 "register aen failed error %x\n", error);
8985
8986 mutex_unlock(&instance->reset_mutex);
8987 kfree(ev);
8988 }
8989
8990 /**
8991 * megasas_init - Driver load entry point
8992 */
megasas_init(void)8993 static int __init megasas_init(void)
8994 {
8995 int rval;
8996
8997 /*
8998 * Booted in kdump kernel, minimize memory footprints by
8999 * disabling few features
9000 */
9001 if (reset_devices) {
9002 msix_vectors = 1;
9003 rdpq_enable = 0;
9004 dual_qdepth_disable = 1;
9005 poll_queues = 0;
9006 }
9007
9008 /*
9009 * Announce driver version and other information
9010 */
9011 pr_info("megasas: %s\n", MEGASAS_VERSION);
9012
9013 megasas_dbg_lvl = 0;
9014 support_poll_for_event = 2;
9015 support_device_change = 1;
9016 support_nvme_encapsulation = true;
9017 support_pci_lane_margining = true;
9018
9019 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
9020
9021 /*
9022 * Register character device node
9023 */
9024 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
9025
9026 if (rval < 0) {
9027 printk(KERN_DEBUG "megasas: failed to open device node\n");
9028 return rval;
9029 }
9030
9031 megasas_mgmt_majorno = rval;
9032
9033 megasas_init_debugfs();
9034
9035 /*
9036 * Register ourselves as PCI hotplug module
9037 */
9038 rval = pci_register_driver(&megasas_pci_driver);
9039
9040 if (rval) {
9041 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
9042 goto err_pcidrv;
9043 }
9044
9045 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
9046 (event_log_level > MFI_EVT_CLASS_DEAD)) {
9047 pr_warn("megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
9048 event_log_level = MFI_EVT_CLASS_CRITICAL;
9049 }
9050
9051 rval = driver_create_file(&megasas_pci_driver.driver,
9052 &driver_attr_version);
9053 if (rval)
9054 goto err_dcf_attr_ver;
9055
9056 rval = driver_create_file(&megasas_pci_driver.driver,
9057 &driver_attr_release_date);
9058 if (rval)
9059 goto err_dcf_rel_date;
9060
9061 rval = driver_create_file(&megasas_pci_driver.driver,
9062 &driver_attr_support_poll_for_event);
9063 if (rval)
9064 goto err_dcf_support_poll_for_event;
9065
9066 rval = driver_create_file(&megasas_pci_driver.driver,
9067 &driver_attr_dbg_lvl);
9068 if (rval)
9069 goto err_dcf_dbg_lvl;
9070 rval = driver_create_file(&megasas_pci_driver.driver,
9071 &driver_attr_support_device_change);
9072 if (rval)
9073 goto err_dcf_support_device_change;
9074
9075 rval = driver_create_file(&megasas_pci_driver.driver,
9076 &driver_attr_support_nvme_encapsulation);
9077 if (rval)
9078 goto err_dcf_support_nvme_encapsulation;
9079
9080 rval = driver_create_file(&megasas_pci_driver.driver,
9081 &driver_attr_support_pci_lane_margining);
9082 if (rval)
9083 goto err_dcf_support_pci_lane_margining;
9084
9085 return rval;
9086
9087 err_dcf_support_pci_lane_margining:
9088 driver_remove_file(&megasas_pci_driver.driver,
9089 &driver_attr_support_nvme_encapsulation);
9090
9091 err_dcf_support_nvme_encapsulation:
9092 driver_remove_file(&megasas_pci_driver.driver,
9093 &driver_attr_support_device_change);
9094
9095 err_dcf_support_device_change:
9096 driver_remove_file(&megasas_pci_driver.driver,
9097 &driver_attr_dbg_lvl);
9098 err_dcf_dbg_lvl:
9099 driver_remove_file(&megasas_pci_driver.driver,
9100 &driver_attr_support_poll_for_event);
9101 err_dcf_support_poll_for_event:
9102 driver_remove_file(&megasas_pci_driver.driver,
9103 &driver_attr_release_date);
9104 err_dcf_rel_date:
9105 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9106 err_dcf_attr_ver:
9107 pci_unregister_driver(&megasas_pci_driver);
9108 err_pcidrv:
9109 megasas_exit_debugfs();
9110 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9111 return rval;
9112 }
9113
9114 /**
9115 * megasas_exit - Driver unload entry point
9116 */
megasas_exit(void)9117 static void __exit megasas_exit(void)
9118 {
9119 driver_remove_file(&megasas_pci_driver.driver,
9120 &driver_attr_dbg_lvl);
9121 driver_remove_file(&megasas_pci_driver.driver,
9122 &driver_attr_support_poll_for_event);
9123 driver_remove_file(&megasas_pci_driver.driver,
9124 &driver_attr_support_device_change);
9125 driver_remove_file(&megasas_pci_driver.driver,
9126 &driver_attr_release_date);
9127 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9128 driver_remove_file(&megasas_pci_driver.driver,
9129 &driver_attr_support_nvme_encapsulation);
9130 driver_remove_file(&megasas_pci_driver.driver,
9131 &driver_attr_support_pci_lane_margining);
9132
9133 pci_unregister_driver(&megasas_pci_driver);
9134 megasas_exit_debugfs();
9135 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9136 }
9137
9138 module_init(megasas_init);
9139 module_exit(megasas_exit);
9140