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edd16368 SC |
1 | /* |
2 | * Disk Array driver for HP Smart Array SAS controllers | |
51c35139 | 3 | * Copyright 2000, 2014 Hewlett-Packard Development Company, L.P. |
edd16368 SC |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; version 2 of the License. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
12 | * NON INFRINGEMENT. See the GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
17 | * | |
18 | * Questions/Comments/Bugfixes to iss_storagedev@hp.com | |
19 | * | |
20 | */ | |
21 | #ifndef HPSA_H | |
22 | #define HPSA_H | |
23 | ||
24 | #include <scsi/scsicam.h> | |
25 | ||
26 | #define IO_OK 0 | |
27 | #define IO_ERROR 1 | |
28 | ||
29 | struct ctlr_info; | |
30 | ||
31 | struct access_method { | |
32 | void (*submit_command)(struct ctlr_info *h, | |
33 | struct CommandList *c); | |
34 | void (*set_intr_mask)(struct ctlr_info *h, unsigned long val); | |
35 | unsigned long (*fifo_full)(struct ctlr_info *h); | |
900c5440 | 36 | bool (*intr_pending)(struct ctlr_info *h); |
254f796b | 37 | unsigned long (*command_completed)(struct ctlr_info *h, u8 q); |
edd16368 SC |
38 | }; |
39 | ||
40 | struct hpsa_scsi_dev_t { | |
41 | int devtype; | |
42 | int bus, target, lun; /* as presented to the OS */ | |
43 | unsigned char scsi3addr[8]; /* as presented to the HW */ | |
44 | #define RAID_CTLR_LUNID "\0\0\0\0\0\0\0\0" | |
45 | unsigned char device_id[16]; /* from inquiry pg. 0x83 */ | |
46 | unsigned char vendor[8]; /* bytes 8-15 of inquiry data */ | |
47 | unsigned char model[16]; /* bytes 16-31 of inquiry data */ | |
edd16368 | 48 | unsigned char raid_level; /* from inquiry page 0xC1 */ |
9846590e | 49 | unsigned char volume_offline; /* discovered via TUR or VPD */ |
e1f7de0c | 50 | u32 ioaccel_handle; |
283b4a9b SC |
51 | int offload_config; /* I/O accel RAID offload configured */ |
52 | int offload_enabled; /* I/O accel RAID offload enabled */ | |
53 | int offload_to_mirror; /* Send next I/O accelerator RAID | |
54 | * offload request to mirror drive | |
55 | */ | |
56 | struct raid_map_data raid_map; /* I/O accelerator RAID map */ | |
57 | ||
edd16368 SC |
58 | }; |
59 | ||
254f796b MG |
60 | struct reply_pool { |
61 | u64 *head; | |
62 | size_t size; | |
63 | u8 wraparound; | |
64 | u32 current_entry; | |
65 | }; | |
66 | ||
edd16368 SC |
67 | struct ctlr_info { |
68 | int ctlr; | |
69 | char devname[8]; | |
70 | char *product_name; | |
edd16368 | 71 | struct pci_dev *pdev; |
01a02ffc | 72 | u32 board_id; |
edd16368 SC |
73 | void __iomem *vaddr; |
74 | unsigned long paddr; | |
75 | int nr_cmds; /* Number of commands allowed on this controller */ | |
76 | struct CfgTable __iomem *cfgtable; | |
77 | int interrupts_enabled; | |
78 | int major; | |
79 | int max_commands; | |
80 | int commands_outstanding; | |
81 | int max_outstanding; /* Debug */ | |
82 | int usage_count; /* number of opens all all minor devices */ | |
303932fd DB |
83 | # define PERF_MODE_INT 0 |
84 | # define DOORBELL_INT 1 | |
edd16368 SC |
85 | # define SIMPLE_MODE_INT 2 |
86 | # define MEMQ_MODE_INT 3 | |
254f796b | 87 | unsigned int intr[MAX_REPLY_QUEUES]; |
edd16368 SC |
88 | unsigned int msix_vector; |
89 | unsigned int msi_vector; | |
a9a3a273 | 90 | int intr_mode; /* either PERF_MODE_INT or SIMPLE_MODE_INT */ |
edd16368 SC |
91 | struct access_method access; |
92 | ||
93 | /* queue and queue Info */ | |
9e0fc764 SC |
94 | struct list_head reqQ; |
95 | struct list_head cmpQ; | |
edd16368 | 96 | unsigned int Qdepth; |
edd16368 SC |
97 | unsigned int maxSG; |
98 | spinlock_t lock; | |
33a2ffce SC |
99 | int maxsgentries; |
100 | u8 max_cmd_sg_entries; | |
101 | int chainsize; | |
102 | struct SGDescriptor **cmd_sg_list; | |
edd16368 SC |
103 | |
104 | /* pointers to command and error info pool */ | |
105 | struct CommandList *cmd_pool; | |
106 | dma_addr_t cmd_pool_dhandle; | |
e1f7de0c MG |
107 | struct io_accel1_cmd *ioaccel_cmd_pool; |
108 | dma_addr_t ioaccel_cmd_pool_dhandle; | |
aca9012a SC |
109 | struct io_accel2_cmd *ioaccel2_cmd_pool; |
110 | dma_addr_t ioaccel2_cmd_pool_dhandle; | |
edd16368 SC |
111 | struct ErrorInfo *errinfo_pool; |
112 | dma_addr_t errinfo_pool_dhandle; | |
113 | unsigned long *cmd_pool_bits; | |
a08a8471 SC |
114 | int scan_finished; |
115 | spinlock_t scan_lock; | |
116 | wait_queue_head_t scan_wait_queue; | |
edd16368 SC |
117 | |
118 | struct Scsi_Host *scsi_host; | |
119 | spinlock_t devlock; /* to protect hba[ctlr]->dev[]; */ | |
120 | int ndevices; /* number of used elements in .dev[] array. */ | |
cfe5badc | 121 | struct hpsa_scsi_dev_t *dev[HPSA_MAX_DEVICES]; |
303932fd DB |
122 | /* |
123 | * Performant mode tables. | |
124 | */ | |
125 | u32 trans_support; | |
126 | u32 trans_offset; | |
127 | struct TransTable_struct *transtable; | |
128 | unsigned long transMethod; | |
129 | ||
0390f0c0 SC |
130 | /* cap concurrent passthrus at some reasonable maximum */ |
131 | #define HPSA_MAX_CONCURRENT_PASSTHRUS (20) | |
132 | spinlock_t passthru_count_lock; /* protects passthru_count */ | |
133 | int passthru_count; | |
134 | ||
303932fd | 135 | /* |
254f796b | 136 | * Performant mode completion buffers |
303932fd DB |
137 | */ |
138 | u64 *reply_pool; | |
303932fd | 139 | size_t reply_pool_size; |
254f796b MG |
140 | struct reply_pool reply_queue[MAX_REPLY_QUEUES]; |
141 | u8 nreply_queues; | |
142 | dma_addr_t reply_pool_dhandle; | |
303932fd | 143 | u32 *blockFetchTable; |
e1f7de0c | 144 | u32 *ioaccel1_blockFetchTable; |
aca9012a | 145 | u32 *ioaccel2_blockFetchTable; |
b9af4937 | 146 | u32 *ioaccel2_bft2_regs; |
339b2b14 | 147 | unsigned char *hba_inquiry_data; |
283b4a9b SC |
148 | u32 driver_support; |
149 | u32 fw_support; | |
150 | int ioaccel_support; | |
151 | int ioaccel_maxsg; | |
a0c12413 SC |
152 | u64 last_intr_timestamp; |
153 | u32 last_heartbeat; | |
154 | u64 last_heartbeat_timestamp; | |
e85c5974 SC |
155 | u32 heartbeat_sample_interval; |
156 | atomic_t firmware_flash_in_progress; | |
a0c12413 | 157 | u32 lockup_detected; |
8a98db73 SC |
158 | struct delayed_work monitor_ctlr_work; |
159 | int remove_in_progress; | |
396883e2 | 160 | u32 fifo_recently_full; |
254f796b MG |
161 | /* Address of h->q[x] is passed to intr handler to know which queue */ |
162 | u8 q[MAX_REPLY_QUEUES]; | |
75167d2c SC |
163 | u32 TMFSupportFlags; /* cache what task mgmt funcs are supported. */ |
164 | #define HPSATMF_BITS_SUPPORTED (1 << 0) | |
165 | #define HPSATMF_PHYS_LUN_RESET (1 << 1) | |
166 | #define HPSATMF_PHYS_NEX_RESET (1 << 2) | |
167 | #define HPSATMF_PHYS_TASK_ABORT (1 << 3) | |
168 | #define HPSATMF_PHYS_TSET_ABORT (1 << 4) | |
169 | #define HPSATMF_PHYS_CLEAR_ACA (1 << 5) | |
170 | #define HPSATMF_PHYS_CLEAR_TSET (1 << 6) | |
171 | #define HPSATMF_PHYS_QRY_TASK (1 << 7) | |
172 | #define HPSATMF_PHYS_QRY_TSET (1 << 8) | |
173 | #define HPSATMF_PHYS_QRY_ASYNC (1 << 9) | |
174 | #define HPSATMF_MASK_SUPPORTED (1 << 16) | |
175 | #define HPSATMF_LOG_LUN_RESET (1 << 17) | |
176 | #define HPSATMF_LOG_NEX_RESET (1 << 18) | |
177 | #define HPSATMF_LOG_TASK_ABORT (1 << 19) | |
178 | #define HPSATMF_LOG_TSET_ABORT (1 << 20) | |
179 | #define HPSATMF_LOG_CLEAR_ACA (1 << 21) | |
180 | #define HPSATMF_LOG_CLEAR_TSET (1 << 22) | |
181 | #define HPSATMF_LOG_QRY_TASK (1 << 23) | |
182 | #define HPSATMF_LOG_QRY_TSET (1 << 24) | |
183 | #define HPSATMF_LOG_QRY_ASYNC (1 << 25) | |
76438d08 | 184 | u32 events; |
faff6ee0 SC |
185 | #define CTLR_STATE_CHANGE_EVENT (1 << 0) |
186 | #define CTLR_ENCLOSURE_HOT_PLUG_EVENT (1 << 1) | |
187 | #define CTLR_STATE_CHANGE_EVENT_PHYSICAL_DRV (1 << 4) | |
188 | #define CTLR_STATE_CHANGE_EVENT_LOGICAL_DRV (1 << 5) | |
189 | #define CTLR_STATE_CHANGE_EVENT_REDUNDANT_CNTRL (1 << 6) | |
190 | #define CTLR_STATE_CHANGE_EVENT_AIO_ENABLED_DISABLED (1 << 30) | |
191 | #define CTLR_STATE_CHANGE_EVENT_AIO_CONFIG_CHANGE (1 << 31) | |
192 | ||
193 | #define RESCAN_REQUIRED_EVENT_BITS \ | |
194 | (CTLR_STATE_CHANGE_EVENT | \ | |
195 | CTLR_ENCLOSURE_HOT_PLUG_EVENT | \ | |
196 | CTLR_STATE_CHANGE_EVENT_PHYSICAL_DRV | \ | |
197 | CTLR_STATE_CHANGE_EVENT_LOGICAL_DRV | \ | |
198 | CTLR_STATE_CHANGE_EVENT_REDUNDANT_CNTRL | \ | |
199 | CTLR_STATE_CHANGE_EVENT_AIO_ENABLED_DISABLED | \ | |
200 | CTLR_STATE_CHANGE_EVENT_AIO_CONFIG_CHANGE) | |
9846590e SC |
201 | spinlock_t offline_device_lock; |
202 | struct list_head offline_device_list; | |
da0697bd | 203 | int acciopath_status; |
e863d68e | 204 | int drv_req_rescan; /* flag for driver to request rescan event */ |
2ba8bfc8 | 205 | int raid_offload_debug; |
edd16368 | 206 | }; |
9846590e SC |
207 | |
208 | struct offline_device_entry { | |
209 | unsigned char scsi3addr[8]; | |
210 | struct list_head offline_list; | |
211 | }; | |
212 | ||
edd16368 SC |
213 | #define HPSA_ABORT_MSG 0 |
214 | #define HPSA_DEVICE_RESET_MSG 1 | |
64670ac8 SC |
215 | #define HPSA_RESET_TYPE_CONTROLLER 0x00 |
216 | #define HPSA_RESET_TYPE_BUS 0x01 | |
217 | #define HPSA_RESET_TYPE_TARGET 0x03 | |
218 | #define HPSA_RESET_TYPE_LUN 0x04 | |
edd16368 | 219 | #define HPSA_MSG_SEND_RETRY_LIMIT 10 |
516fda49 | 220 | #define HPSA_MSG_SEND_RETRY_INTERVAL_MSECS (10000) |
edd16368 SC |
221 | |
222 | /* Maximum time in seconds driver will wait for command completions | |
223 | * when polling before giving up. | |
224 | */ | |
225 | #define HPSA_MAX_POLL_TIME_SECS (20) | |
226 | ||
227 | /* During SCSI error recovery, HPSA_TUR_RETRY_LIMIT defines | |
228 | * how many times to retry TEST UNIT READY on a device | |
229 | * while waiting for it to become ready before giving up. | |
230 | * HPSA_MAX_WAIT_INTERVAL_SECS is the max wait interval | |
231 | * between sending TURs while waiting for a device | |
232 | * to become ready. | |
233 | */ | |
234 | #define HPSA_TUR_RETRY_LIMIT (20) | |
235 | #define HPSA_MAX_WAIT_INTERVAL_SECS (30) | |
236 | ||
237 | /* HPSA_BOARD_READY_WAIT_SECS is how long to wait for a board | |
238 | * to become ready, in seconds, before giving up on it. | |
239 | * HPSA_BOARD_READY_POLL_INTERVAL_MSECS * is how long to wait | |
240 | * between polling the board to see if it is ready, in | |
241 | * milliseconds. HPSA_BOARD_READY_POLL_INTERVAL and | |
242 | * HPSA_BOARD_READY_ITERATIONS are derived from those. | |
243 | */ | |
244 | #define HPSA_BOARD_READY_WAIT_SECS (120) | |
2ed7127b | 245 | #define HPSA_BOARD_NOT_READY_WAIT_SECS (100) |
edd16368 SC |
246 | #define HPSA_BOARD_READY_POLL_INTERVAL_MSECS (100) |
247 | #define HPSA_BOARD_READY_POLL_INTERVAL \ | |
248 | ((HPSA_BOARD_READY_POLL_INTERVAL_MSECS * HZ) / 1000) | |
249 | #define HPSA_BOARD_READY_ITERATIONS \ | |
250 | ((HPSA_BOARD_READY_WAIT_SECS * 1000) / \ | |
251 | HPSA_BOARD_READY_POLL_INTERVAL_MSECS) | |
fe5389c8 SC |
252 | #define HPSA_BOARD_NOT_READY_ITERATIONS \ |
253 | ((HPSA_BOARD_NOT_READY_WAIT_SECS * 1000) / \ | |
254 | HPSA_BOARD_READY_POLL_INTERVAL_MSECS) | |
edd16368 SC |
255 | #define HPSA_POST_RESET_PAUSE_MSECS (3000) |
256 | #define HPSA_POST_RESET_NOOP_RETRIES (12) | |
257 | ||
258 | /* Defining the diffent access_menthods */ | |
259 | /* | |
260 | * Memory mapped FIFO interface (SMART 53xx cards) | |
261 | */ | |
262 | #define SA5_DOORBELL 0x20 | |
263 | #define SA5_REQUEST_PORT_OFFSET 0x40 | |
264 | #define SA5_REPLY_INTR_MASK_OFFSET 0x34 | |
265 | #define SA5_REPLY_PORT_OFFSET 0x44 | |
266 | #define SA5_INTR_STATUS 0x30 | |
267 | #define SA5_SCRATCHPAD_OFFSET 0xB0 | |
268 | ||
269 | #define SA5_CTCFG_OFFSET 0xB4 | |
270 | #define SA5_CTMEM_OFFSET 0xB8 | |
271 | ||
272 | #define SA5_INTR_OFF 0x08 | |
273 | #define SA5B_INTR_OFF 0x04 | |
274 | #define SA5_INTR_PENDING 0x08 | |
275 | #define SA5B_INTR_PENDING 0x04 | |
276 | #define FIFO_EMPTY 0xffffffff | |
277 | #define HPSA_FIRMWARE_READY 0xffff0000 /* value in scratchpad register */ | |
278 | ||
279 | #define HPSA_ERROR_BIT 0x02 | |
edd16368 | 280 | |
303932fd DB |
281 | /* Performant mode flags */ |
282 | #define SA5_PERF_INTR_PENDING 0x04 | |
283 | #define SA5_PERF_INTR_OFF 0x05 | |
284 | #define SA5_OUTDB_STATUS_PERF_BIT 0x01 | |
285 | #define SA5_OUTDB_CLEAR_PERF_BIT 0x01 | |
286 | #define SA5_OUTDB_CLEAR 0xA0 | |
287 | #define SA5_OUTDB_CLEAR_PERF_BIT 0x01 | |
288 | #define SA5_OUTDB_STATUS 0x9C | |
289 | ||
290 | ||
edd16368 SC |
291 | #define HPSA_INTR_ON 1 |
292 | #define HPSA_INTR_OFF 0 | |
b66cc250 MM |
293 | |
294 | /* | |
295 | * Inbound Post Queue offsets for IO Accelerator Mode 2 | |
296 | */ | |
297 | #define IOACCEL2_INBOUND_POSTQ_32 0x48 | |
298 | #define IOACCEL2_INBOUND_POSTQ_64_LOW 0xd0 | |
299 | #define IOACCEL2_INBOUND_POSTQ_64_HI 0xd4 | |
300 | ||
edd16368 SC |
301 | /* |
302 | Send the command to the hardware | |
303 | */ | |
304 | static void SA5_submit_command(struct ctlr_info *h, | |
305 | struct CommandList *c) | |
306 | { | |
303932fd DB |
307 | dev_dbg(&h->pdev->dev, "Sending %x, tag = %x\n", c->busaddr, |
308 | c->Header.Tag.lower); | |
edd16368 | 309 | writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); |
fec62c36 | 310 | (void) readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); |
edd16368 SC |
311 | } |
312 | ||
c349775e ST |
313 | static void SA5_submit_command_ioaccel2(struct ctlr_info *h, |
314 | struct CommandList *c) | |
315 | { | |
316 | dev_dbg(&h->pdev->dev, "Sending %x, tag = %x\n", c->busaddr, | |
317 | c->Header.Tag.lower); | |
318 | if (c->cmd_type == CMD_IOACCEL2) | |
319 | writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32); | |
320 | else | |
321 | writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); | |
322 | (void) readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); | |
323 | } | |
324 | ||
edd16368 SC |
325 | /* |
326 | * This card is the opposite of the other cards. | |
327 | * 0 turns interrupts on... | |
328 | * 0x08 turns them off... | |
329 | */ | |
330 | static void SA5_intr_mask(struct ctlr_info *h, unsigned long val) | |
331 | { | |
332 | if (val) { /* Turn interrupts on */ | |
333 | h->interrupts_enabled = 1; | |
334 | writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
8cd21da7 | 335 | (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); |
edd16368 SC |
336 | } else { /* Turn them off */ |
337 | h->interrupts_enabled = 0; | |
338 | writel(SA5_INTR_OFF, | |
339 | h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
8cd21da7 | 340 | (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); |
edd16368 SC |
341 | } |
342 | } | |
303932fd DB |
343 | |
344 | static void SA5_performant_intr_mask(struct ctlr_info *h, unsigned long val) | |
345 | { | |
346 | if (val) { /* turn on interrupts */ | |
347 | h->interrupts_enabled = 1; | |
348 | writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
8cd21da7 | 349 | (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); |
303932fd DB |
350 | } else { |
351 | h->interrupts_enabled = 0; | |
352 | writel(SA5_PERF_INTR_OFF, | |
353 | h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
8cd21da7 | 354 | (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); |
303932fd DB |
355 | } |
356 | } | |
357 | ||
254f796b | 358 | static unsigned long SA5_performant_completed(struct ctlr_info *h, u8 q) |
303932fd | 359 | { |
254f796b | 360 | struct reply_pool *rq = &h->reply_queue[q]; |
e16a33ad | 361 | unsigned long flags, register_value = FIFO_EMPTY; |
303932fd | 362 | |
303932fd DB |
363 | /* msi auto clears the interrupt pending bit. */ |
364 | if (!(h->msi_vector || h->msix_vector)) { | |
2c17d2da SC |
365 | /* flush the controller write of the reply queue by reading |
366 | * outbound doorbell status register. | |
367 | */ | |
368 | register_value = readl(h->vaddr + SA5_OUTDB_STATUS); | |
303932fd DB |
369 | writel(SA5_OUTDB_CLEAR_PERF_BIT, h->vaddr + SA5_OUTDB_CLEAR); |
370 | /* Do a read in order to flush the write to the controller | |
371 | * (as per spec.) | |
372 | */ | |
373 | register_value = readl(h->vaddr + SA5_OUTDB_STATUS); | |
374 | } | |
375 | ||
254f796b MG |
376 | if ((rq->head[rq->current_entry] & 1) == rq->wraparound) { |
377 | register_value = rq->head[rq->current_entry]; | |
378 | rq->current_entry++; | |
e16a33ad | 379 | spin_lock_irqsave(&h->lock, flags); |
303932fd | 380 | h->commands_outstanding--; |
e16a33ad | 381 | spin_unlock_irqrestore(&h->lock, flags); |
303932fd DB |
382 | } else { |
383 | register_value = FIFO_EMPTY; | |
384 | } | |
385 | /* Check for wraparound */ | |
254f796b MG |
386 | if (rq->current_entry == h->max_commands) { |
387 | rq->current_entry = 0; | |
388 | rq->wraparound ^= 1; | |
303932fd | 389 | } |
303932fd DB |
390 | return register_value; |
391 | } | |
392 | ||
edd16368 SC |
393 | /* |
394 | * Returns true if fifo is full. | |
395 | * | |
396 | */ | |
397 | static unsigned long SA5_fifo_full(struct ctlr_info *h) | |
398 | { | |
399 | if (h->commands_outstanding >= h->max_commands) | |
400 | return 1; | |
401 | else | |
402 | return 0; | |
403 | ||
404 | } | |
405 | /* | |
406 | * returns value read from hardware. | |
407 | * returns FIFO_EMPTY if there is nothing to read | |
408 | */ | |
254f796b MG |
409 | static unsigned long SA5_completed(struct ctlr_info *h, |
410 | __attribute__((unused)) u8 q) | |
edd16368 SC |
411 | { |
412 | unsigned long register_value | |
413 | = readl(h->vaddr + SA5_REPLY_PORT_OFFSET); | |
e16a33ad | 414 | unsigned long flags; |
edd16368 | 415 | |
e16a33ad MG |
416 | if (register_value != FIFO_EMPTY) { |
417 | spin_lock_irqsave(&h->lock, flags); | |
edd16368 | 418 | h->commands_outstanding--; |
e16a33ad MG |
419 | spin_unlock_irqrestore(&h->lock, flags); |
420 | } | |
edd16368 SC |
421 | |
422 | #ifdef HPSA_DEBUG | |
423 | if (register_value != FIFO_EMPTY) | |
84ca0be2 | 424 | dev_dbg(&h->pdev->dev, "Read %lx back from board\n", |
edd16368 SC |
425 | register_value); |
426 | else | |
f79cfec6 | 427 | dev_dbg(&h->pdev->dev, "FIFO Empty read\n"); |
edd16368 SC |
428 | #endif |
429 | ||
430 | return register_value; | |
431 | } | |
432 | /* | |
433 | * Returns true if an interrupt is pending.. | |
434 | */ | |
900c5440 | 435 | static bool SA5_intr_pending(struct ctlr_info *h) |
edd16368 SC |
436 | { |
437 | unsigned long register_value = | |
438 | readl(h->vaddr + SA5_INTR_STATUS); | |
84ca0be2 | 439 | dev_dbg(&h->pdev->dev, "intr_pending %lx\n", register_value); |
900c5440 | 440 | return register_value & SA5_INTR_PENDING; |
edd16368 SC |
441 | } |
442 | ||
303932fd DB |
443 | static bool SA5_performant_intr_pending(struct ctlr_info *h) |
444 | { | |
445 | unsigned long register_value = readl(h->vaddr + SA5_INTR_STATUS); | |
446 | ||
447 | if (!register_value) | |
448 | return false; | |
449 | ||
450 | if (h->msi_vector || h->msix_vector) | |
451 | return true; | |
452 | ||
453 | /* Read outbound doorbell to flush */ | |
454 | register_value = readl(h->vaddr + SA5_OUTDB_STATUS); | |
455 | return register_value & SA5_OUTDB_STATUS_PERF_BIT; | |
456 | } | |
edd16368 | 457 | |
e1f7de0c MG |
458 | #define SA5_IOACCEL_MODE1_INTR_STATUS_CMP_BIT 0x100 |
459 | ||
460 | static bool SA5_ioaccel_mode1_intr_pending(struct ctlr_info *h) | |
461 | { | |
462 | unsigned long register_value = readl(h->vaddr + SA5_INTR_STATUS); | |
463 | ||
464 | return (register_value & SA5_IOACCEL_MODE1_INTR_STATUS_CMP_BIT) ? | |
465 | true : false; | |
466 | } | |
467 | ||
468 | #define IOACCEL_MODE1_REPLY_QUEUE_INDEX 0x1A0 | |
469 | #define IOACCEL_MODE1_PRODUCER_INDEX 0x1B8 | |
470 | #define IOACCEL_MODE1_CONSUMER_INDEX 0x1BC | |
471 | #define IOACCEL_MODE1_REPLY_UNUSED 0xFFFFFFFFFFFFFFFFULL | |
472 | ||
283b4a9b | 473 | static unsigned long SA5_ioaccel_mode1_completed(struct ctlr_info *h, u8 q) |
e1f7de0c MG |
474 | { |
475 | u64 register_value; | |
476 | struct reply_pool *rq = &h->reply_queue[q]; | |
477 | unsigned long flags; | |
478 | ||
479 | BUG_ON(q >= h->nreply_queues); | |
480 | ||
481 | register_value = rq->head[rq->current_entry]; | |
482 | if (register_value != IOACCEL_MODE1_REPLY_UNUSED) { | |
483 | rq->head[rq->current_entry] = IOACCEL_MODE1_REPLY_UNUSED; | |
484 | if (++rq->current_entry == rq->size) | |
485 | rq->current_entry = 0; | |
283b4a9b SC |
486 | /* |
487 | * @todo | |
488 | * | |
489 | * Don't really need to write the new index after each command, | |
490 | * but with current driver design this is easiest. | |
491 | */ | |
492 | wmb(); | |
493 | writel((q << 24) | rq->current_entry, h->vaddr + | |
494 | IOACCEL_MODE1_CONSUMER_INDEX); | |
e1f7de0c MG |
495 | spin_lock_irqsave(&h->lock, flags); |
496 | h->commands_outstanding--; | |
497 | spin_unlock_irqrestore(&h->lock, flags); | |
e1f7de0c MG |
498 | } |
499 | return (unsigned long) register_value; | |
500 | } | |
501 | ||
edd16368 SC |
502 | static struct access_method SA5_access = { |
503 | SA5_submit_command, | |
504 | SA5_intr_mask, | |
505 | SA5_fifo_full, | |
506 | SA5_intr_pending, | |
507 | SA5_completed, | |
508 | }; | |
509 | ||
e1f7de0c MG |
510 | static struct access_method SA5_ioaccel_mode1_access = { |
511 | SA5_submit_command, | |
512 | SA5_performant_intr_mask, | |
513 | SA5_fifo_full, | |
514 | SA5_ioaccel_mode1_intr_pending, | |
515 | SA5_ioaccel_mode1_completed, | |
516 | }; | |
517 | ||
c349775e ST |
518 | static struct access_method SA5_ioaccel_mode2_access = { |
519 | SA5_submit_command_ioaccel2, | |
520 | SA5_performant_intr_mask, | |
521 | SA5_fifo_full, | |
522 | SA5_performant_intr_pending, | |
523 | SA5_performant_completed, | |
524 | }; | |
525 | ||
303932fd DB |
526 | static struct access_method SA5_performant_access = { |
527 | SA5_submit_command, | |
528 | SA5_performant_intr_mask, | |
529 | SA5_fifo_full, | |
530 | SA5_performant_intr_pending, | |
531 | SA5_performant_completed, | |
532 | }; | |
533 | ||
edd16368 | 534 | struct board_type { |
01a02ffc | 535 | u32 board_id; |
edd16368 SC |
536 | char *product_name; |
537 | struct access_method *access; | |
538 | }; | |
539 | ||
edd16368 SC |
540 | #endif /* HPSA_H */ |
541 |