1 /*
2 * Copyright © 2016 Broadcom
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 #ifndef V3D_CHIP_H
25 #define V3D_CHIP_H
26
27 #include <stdbool.h>
28 #include <stdint.h>
29
30 /**
31 * Struct for tracking features of the V3D chip across driver and compiler.
32 */
33 struct v3d_device_info {
34 /** Simple V3D version: major * 10 + minor */
35 uint8_t ver;
36
37 /** V3D revision number */
38 uint8_t rev;
39
40 /** V3D compatitiblity revision number */
41 uint8_t compat_rev;
42
43 /** Maximum number of performance counters for a given V3D version **/
44 uint8_t max_perfcnt;
45
46 /** Size of the VPM, in bytes. */
47 int vpm_size;
48
49 /** NSLC * QUPS from the core's IDENT registers. */
50 int qpu_count;
51
52 /** If the hw has accumulator registers */
53 bool has_accumulators;
54
55 /** Granularity for the Clipper XY Scaling */
56 float clipper_xy_granularity;
57
58 /** The Control List Executor (CLE) pre-fetches V3D_CLE_READAHEAD
59 * bytes from the Control List buffer. The usage of these last bytes
60 * should be avoided or the CLE would pre-fetch the data after the
61 * end of the CL buffer, reporting the kernel "MMU error from client
62 * CLE".
63 */
64 uint32_t cle_readahead;
65
66 /** Minimum size for a buffer storing the Control List Executor (CLE) */
67 uint32_t cle_buffer_min_size;
68 };
69
70 typedef int (*v3d_ioctl_fun)(int fd, unsigned long request, void *arg);
71
72 bool
73 v3d_get_device_info(int fd, struct v3d_device_info* devinfo, v3d_ioctl_fun fun);
74
75 static inline bool
v3d_device_has_draw_index(struct v3d_device_info * devinfo)76 v3d_device_has_draw_index(struct v3d_device_info *devinfo)
77 {
78 return devinfo->ver > 71 || (devinfo->ver == 71 && devinfo->rev >= 10);
79 }
80
81 #endif
82