7  * Copyright (c) 2003-2016 Cavium, Inc.
14  * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
47  * Bytes offset below assume worst-case of a 64-bit system.
50 	/** Bytes 1-8.  Pointer to network device private structure. */
53 	/** Bytes 9-16.  Pointer to sk_buff. */
56 	/** Bytes 17-24.  Pointer to gather list. */
59 	/** Bytes 25-32. Physical address of skb->data or gather list. */
62 	/** Bytes 33-47. Piggybacked soft command, if any */
66 /* BQL-related functions */
83 		blocks--;  in octeon_swap_8B_data()
95 	dev_dbg(&oct->pci_dev->dev, "Freeing PCI mapped regions for Bar%d\n",  in octeon_unmap_pci_barx()
98 	if (oct->mmio[baridx].done)  in octeon_unmap_pci_barx()
99 		iounmap(oct->mmio[baridx].hw_addr);  in octeon_unmap_pci_barx()
101 	if (oct->mmio[baridx].start)  in octeon_unmap_pci_barx()
102 		pci_release_region(oct->pci_dev, baridx * 2);  in octeon_unmap_pci_barx()
116 	if (pci_request_region(oct->pci_dev, baridx * 2, DRV_NAME)) {  in octeon_map_pci_barx()
117 		dev_err(&oct->pci_dev->dev, "pci_request_region failed for bar %d\n",  in octeon_map_pci_barx()
122 	oct->mmio[baridx].start = pci_resource_start(oct->pci_dev, baridx * 2);  in octeon_map_pci_barx()
123 	oct->mmio[baridx].len = pci_resource_len(oct->pci_dev, baridx * 2);  in octeon_map_pci_barx()
125 	mapped_len = oct->mmio[baridx].len;  in octeon_map_pci_barx()
132 	oct->mmio[baridx].hw_addr =  in octeon_map_pci_barx()
133 		ioremap(oct->mmio[baridx].start, mapped_len);  in octeon_map_pci_barx()
134 	oct->mmio[baridx].mapped_len = mapped_len;  in octeon_map_pci_barx()
136 	dev_dbg(&oct->pci_dev->dev, "BAR%d start: 0x%llx mapped %u of %u bytes\n",  in octeon_map_pci_barx()
137 		baridx, oct->mmio[baridx].start, mapped_len,  in octeon_map_pci_barx()
138 		oct->mmio[baridx].len);  in octeon_map_pci_barx()
140 	if (!oct->mmio[baridx].hw_addr) {  in octeon_map_pci_barx()
141 		dev_err(&oct->pci_dev->dev, "error ioremap for bar %d\n",  in octeon_map_pci_barx()
145 	oct->mmio[baridx].done = 1;  in octeon_map_pci_barx()
150 	pci_release_region(oct->pci_dev, baridx * 2);  in octeon_map_pci_barx()
156  * timeout: milli sec which an application wants to wait for the
159  *	       from the firmware within LIO_SC_MAX_TMO_MS milli sec.
161  *	       LIO_SC_MAX_TMO_MS milli sec, lio_process_ordered_list()
166  * errno -EINTR: user abort the command.
167  * errno -ETIME: user spefified timeout value has been expired.
168  * errno -EBUSY: the response of the request does not return in
173  * A request with non-zero return value, the sc->caller_is_done
176  *  should mark sc->caller_is_done with 1 after examing the
180  * This is to fix the possible race condition of both timeout process
187 			       unsigned long timeout)  in wait_for_sc_completion_timeout()  argument
192 	if (timeout)  in wait_for_sc_completion_timeout()
193 		timeout_jiff = msecs_to_jiffies(timeout);  in wait_for_sc_completion_timeout()
198 		wait_for_completion_interruptible_timeout(&sc->complete,  in wait_for_sc_completion_timeout()
201 		dev_err(&oct_dev->pci_dev->dev, "%s: sc is timeout\n",  in wait_for_sc_completion_timeout()
203 		WRITE_ONCE(sc->caller_is_done, true);  in wait_for_sc_completion_timeout()
204 		errno = -ETIME;  in wait_for_sc_completion_timeout()
205 	} else if (timeout_jiff == -ERESTARTSYS) {  in wait_for_sc_completion_timeout()
206 		dev_err(&oct_dev->pci_dev->dev, "%s: sc is interrupted\n",  in wait_for_sc_completion_timeout()
208 		WRITE_ONCE(sc->caller_is_done, true);  in wait_for_sc_completion_timeout()
209 		errno = -EINTR;  in wait_for_sc_completion_timeout()
210 	} else  if (sc->sc_status == OCTEON_REQUEST_TIMEOUT) {  in wait_for_sc_completion_timeout()
211 		dev_err(&oct_dev->pci_dev->dev, "%s: sc has fatal timeout\n",  in wait_for_sc_completion_timeout()
213 		WRITE_ONCE(sc->caller_is_done, true);  in wait_for_sc_completion_timeout()
214 		errno = -EBUSY;  in wait_for_sc_completion_timeout()