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edd16368 SC |
1 | /* |
2 | * Disk Array driver for HP Smart Array SAS controllers | |
3 | * Copyright 2000, 2009 Hewlett-Packard Development Company, L.P. | |
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 SC |
48 | unsigned char raid_level; /* from inquiry page 0xC1 */ |
49 | }; | |
50 | ||
254f796b MG |
51 | struct reply_pool { |
52 | u64 *head; | |
53 | size_t size; | |
54 | u8 wraparound; | |
55 | u32 current_entry; | |
56 | }; | |
57 | ||
edd16368 SC |
58 | struct ctlr_info { |
59 | int ctlr; | |
60 | char devname[8]; | |
61 | char *product_name; | |
edd16368 | 62 | struct pci_dev *pdev; |
01a02ffc | 63 | u32 board_id; |
edd16368 SC |
64 | void __iomem *vaddr; |
65 | unsigned long paddr; | |
66 | int nr_cmds; /* Number of commands allowed on this controller */ | |
67 | struct CfgTable __iomem *cfgtable; | |
68 | int interrupts_enabled; | |
69 | int major; | |
70 | int max_commands; | |
71 | int commands_outstanding; | |
72 | int max_outstanding; /* Debug */ | |
73 | int usage_count; /* number of opens all all minor devices */ | |
303932fd DB |
74 | # define PERF_MODE_INT 0 |
75 | # define DOORBELL_INT 1 | |
edd16368 SC |
76 | # define SIMPLE_MODE_INT 2 |
77 | # define MEMQ_MODE_INT 3 | |
254f796b | 78 | unsigned int intr[MAX_REPLY_QUEUES]; |
edd16368 SC |
79 | unsigned int msix_vector; |
80 | unsigned int msi_vector; | |
a9a3a273 | 81 | int intr_mode; /* either PERF_MODE_INT or SIMPLE_MODE_INT */ |
edd16368 SC |
82 | struct access_method access; |
83 | ||
84 | /* queue and queue Info */ | |
9e0fc764 SC |
85 | struct list_head reqQ; |
86 | struct list_head cmpQ; | |
edd16368 | 87 | unsigned int Qdepth; |
edd16368 SC |
88 | unsigned int maxSG; |
89 | spinlock_t lock; | |
33a2ffce SC |
90 | int maxsgentries; |
91 | u8 max_cmd_sg_entries; | |
92 | int chainsize; | |
93 | struct SGDescriptor **cmd_sg_list; | |
edd16368 SC |
94 | |
95 | /* pointers to command and error info pool */ | |
96 | struct CommandList *cmd_pool; | |
97 | dma_addr_t cmd_pool_dhandle; | |
98 | struct ErrorInfo *errinfo_pool; | |
99 | dma_addr_t errinfo_pool_dhandle; | |
100 | unsigned long *cmd_pool_bits; | |
a08a8471 SC |
101 | int scan_finished; |
102 | spinlock_t scan_lock; | |
103 | wait_queue_head_t scan_wait_queue; | |
edd16368 SC |
104 | |
105 | struct Scsi_Host *scsi_host; | |
106 | spinlock_t devlock; /* to protect hba[ctlr]->dev[]; */ | |
107 | int ndevices; /* number of used elements in .dev[] array. */ | |
cfe5badc | 108 | struct hpsa_scsi_dev_t *dev[HPSA_MAX_DEVICES]; |
303932fd DB |
109 | /* |
110 | * Performant mode tables. | |
111 | */ | |
112 | u32 trans_support; | |
113 | u32 trans_offset; | |
114 | struct TransTable_struct *transtable; | |
115 | unsigned long transMethod; | |
116 | ||
0390f0c0 SC |
117 | /* cap concurrent passthrus at some reasonable maximum */ |
118 | #define HPSA_MAX_CONCURRENT_PASSTHRUS (20) | |
119 | spinlock_t passthru_count_lock; /* protects passthru_count */ | |
120 | int passthru_count; | |
121 | ||
303932fd | 122 | /* |
254f796b | 123 | * Performant mode completion buffers |
303932fd DB |
124 | */ |
125 | u64 *reply_pool; | |
303932fd | 126 | size_t reply_pool_size; |
254f796b MG |
127 | struct reply_pool reply_queue[MAX_REPLY_QUEUES]; |
128 | u8 nreply_queues; | |
129 | dma_addr_t reply_pool_dhandle; | |
303932fd | 130 | u32 *blockFetchTable; |
339b2b14 | 131 | unsigned char *hba_inquiry_data; |
a0c12413 SC |
132 | u64 last_intr_timestamp; |
133 | u32 last_heartbeat; | |
134 | u64 last_heartbeat_timestamp; | |
e85c5974 SC |
135 | u32 heartbeat_sample_interval; |
136 | atomic_t firmware_flash_in_progress; | |
a0c12413 SC |
137 | u32 lockup_detected; |
138 | struct list_head lockup_list; | |
396883e2 | 139 | u32 fifo_recently_full; |
254f796b MG |
140 | /* Address of h->q[x] is passed to intr handler to know which queue */ |
141 | u8 q[MAX_REPLY_QUEUES]; | |
75167d2c SC |
142 | u32 TMFSupportFlags; /* cache what task mgmt funcs are supported. */ |
143 | #define HPSATMF_BITS_SUPPORTED (1 << 0) | |
144 | #define HPSATMF_PHYS_LUN_RESET (1 << 1) | |
145 | #define HPSATMF_PHYS_NEX_RESET (1 << 2) | |
146 | #define HPSATMF_PHYS_TASK_ABORT (1 << 3) | |
147 | #define HPSATMF_PHYS_TSET_ABORT (1 << 4) | |
148 | #define HPSATMF_PHYS_CLEAR_ACA (1 << 5) | |
149 | #define HPSATMF_PHYS_CLEAR_TSET (1 << 6) | |
150 | #define HPSATMF_PHYS_QRY_TASK (1 << 7) | |
151 | #define HPSATMF_PHYS_QRY_TSET (1 << 8) | |
152 | #define HPSATMF_PHYS_QRY_ASYNC (1 << 9) | |
153 | #define HPSATMF_MASK_SUPPORTED (1 << 16) | |
154 | #define HPSATMF_LOG_LUN_RESET (1 << 17) | |
155 | #define HPSATMF_LOG_NEX_RESET (1 << 18) | |
156 | #define HPSATMF_LOG_TASK_ABORT (1 << 19) | |
157 | #define HPSATMF_LOG_TSET_ABORT (1 << 20) | |
158 | #define HPSATMF_LOG_CLEAR_ACA (1 << 21) | |
159 | #define HPSATMF_LOG_CLEAR_TSET (1 << 22) | |
160 | #define HPSATMF_LOG_QRY_TASK (1 << 23) | |
161 | #define HPSATMF_LOG_QRY_TSET (1 << 24) | |
162 | #define HPSATMF_LOG_QRY_ASYNC (1 << 25) | |
edd16368 SC |
163 | }; |
164 | #define HPSA_ABORT_MSG 0 | |
165 | #define HPSA_DEVICE_RESET_MSG 1 | |
64670ac8 SC |
166 | #define HPSA_RESET_TYPE_CONTROLLER 0x00 |
167 | #define HPSA_RESET_TYPE_BUS 0x01 | |
168 | #define HPSA_RESET_TYPE_TARGET 0x03 | |
169 | #define HPSA_RESET_TYPE_LUN 0x04 | |
edd16368 | 170 | #define HPSA_MSG_SEND_RETRY_LIMIT 10 |
516fda49 | 171 | #define HPSA_MSG_SEND_RETRY_INTERVAL_MSECS (10000) |
edd16368 SC |
172 | |
173 | /* Maximum time in seconds driver will wait for command completions | |
174 | * when polling before giving up. | |
175 | */ | |
176 | #define HPSA_MAX_POLL_TIME_SECS (20) | |
177 | ||
178 | /* During SCSI error recovery, HPSA_TUR_RETRY_LIMIT defines | |
179 | * how many times to retry TEST UNIT READY on a device | |
180 | * while waiting for it to become ready before giving up. | |
181 | * HPSA_MAX_WAIT_INTERVAL_SECS is the max wait interval | |
182 | * between sending TURs while waiting for a device | |
183 | * to become ready. | |
184 | */ | |
185 | #define HPSA_TUR_RETRY_LIMIT (20) | |
186 | #define HPSA_MAX_WAIT_INTERVAL_SECS (30) | |
187 | ||
188 | /* HPSA_BOARD_READY_WAIT_SECS is how long to wait for a board | |
189 | * to become ready, in seconds, before giving up on it. | |
190 | * HPSA_BOARD_READY_POLL_INTERVAL_MSECS * is how long to wait | |
191 | * between polling the board to see if it is ready, in | |
192 | * milliseconds. HPSA_BOARD_READY_POLL_INTERVAL and | |
193 | * HPSA_BOARD_READY_ITERATIONS are derived from those. | |
194 | */ | |
195 | #define HPSA_BOARD_READY_WAIT_SECS (120) | |
2ed7127b | 196 | #define HPSA_BOARD_NOT_READY_WAIT_SECS (100) |
edd16368 SC |
197 | #define HPSA_BOARD_READY_POLL_INTERVAL_MSECS (100) |
198 | #define HPSA_BOARD_READY_POLL_INTERVAL \ | |
199 | ((HPSA_BOARD_READY_POLL_INTERVAL_MSECS * HZ) / 1000) | |
200 | #define HPSA_BOARD_READY_ITERATIONS \ | |
201 | ((HPSA_BOARD_READY_WAIT_SECS * 1000) / \ | |
202 | HPSA_BOARD_READY_POLL_INTERVAL_MSECS) | |
fe5389c8 SC |
203 | #define HPSA_BOARD_NOT_READY_ITERATIONS \ |
204 | ((HPSA_BOARD_NOT_READY_WAIT_SECS * 1000) / \ | |
205 | HPSA_BOARD_READY_POLL_INTERVAL_MSECS) | |
edd16368 SC |
206 | #define HPSA_POST_RESET_PAUSE_MSECS (3000) |
207 | #define HPSA_POST_RESET_NOOP_RETRIES (12) | |
208 | ||
209 | /* Defining the diffent access_menthods */ | |
210 | /* | |
211 | * Memory mapped FIFO interface (SMART 53xx cards) | |
212 | */ | |
213 | #define SA5_DOORBELL 0x20 | |
214 | #define SA5_REQUEST_PORT_OFFSET 0x40 | |
215 | #define SA5_REPLY_INTR_MASK_OFFSET 0x34 | |
216 | #define SA5_REPLY_PORT_OFFSET 0x44 | |
217 | #define SA5_INTR_STATUS 0x30 | |
218 | #define SA5_SCRATCHPAD_OFFSET 0xB0 | |
219 | ||
220 | #define SA5_CTCFG_OFFSET 0xB4 | |
221 | #define SA5_CTMEM_OFFSET 0xB8 | |
222 | ||
223 | #define SA5_INTR_OFF 0x08 | |
224 | #define SA5B_INTR_OFF 0x04 | |
225 | #define SA5_INTR_PENDING 0x08 | |
226 | #define SA5B_INTR_PENDING 0x04 | |
227 | #define FIFO_EMPTY 0xffffffff | |
228 | #define HPSA_FIRMWARE_READY 0xffff0000 /* value in scratchpad register */ | |
229 | ||
230 | #define HPSA_ERROR_BIT 0x02 | |
edd16368 | 231 | |
303932fd DB |
232 | /* Performant mode flags */ |
233 | #define SA5_PERF_INTR_PENDING 0x04 | |
234 | #define SA5_PERF_INTR_OFF 0x05 | |
235 | #define SA5_OUTDB_STATUS_PERF_BIT 0x01 | |
236 | #define SA5_OUTDB_CLEAR_PERF_BIT 0x01 | |
237 | #define SA5_OUTDB_CLEAR 0xA0 | |
238 | #define SA5_OUTDB_CLEAR_PERF_BIT 0x01 | |
239 | #define SA5_OUTDB_STATUS 0x9C | |
240 | ||
241 | ||
edd16368 SC |
242 | #define HPSA_INTR_ON 1 |
243 | #define HPSA_INTR_OFF 0 | |
244 | /* | |
245 | Send the command to the hardware | |
246 | */ | |
247 | static void SA5_submit_command(struct ctlr_info *h, | |
248 | struct CommandList *c) | |
249 | { | |
303932fd DB |
250 | dev_dbg(&h->pdev->dev, "Sending %x, tag = %x\n", c->busaddr, |
251 | c->Header.Tag.lower); | |
edd16368 | 252 | writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); |
fec62c36 | 253 | (void) readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); |
edd16368 SC |
254 | } |
255 | ||
256 | /* | |
257 | * This card is the opposite of the other cards. | |
258 | * 0 turns interrupts on... | |
259 | * 0x08 turns them off... | |
260 | */ | |
261 | static void SA5_intr_mask(struct ctlr_info *h, unsigned long val) | |
262 | { | |
263 | if (val) { /* Turn interrupts on */ | |
264 | h->interrupts_enabled = 1; | |
265 | writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
8cd21da7 | 266 | (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); |
edd16368 SC |
267 | } else { /* Turn them off */ |
268 | h->interrupts_enabled = 0; | |
269 | writel(SA5_INTR_OFF, | |
270 | h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
8cd21da7 | 271 | (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); |
edd16368 SC |
272 | } |
273 | } | |
303932fd DB |
274 | |
275 | static void SA5_performant_intr_mask(struct ctlr_info *h, unsigned long val) | |
276 | { | |
277 | if (val) { /* turn on interrupts */ | |
278 | h->interrupts_enabled = 1; | |
279 | writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
8cd21da7 | 280 | (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); |
303932fd DB |
281 | } else { |
282 | h->interrupts_enabled = 0; | |
283 | writel(SA5_PERF_INTR_OFF, | |
284 | h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
8cd21da7 | 285 | (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); |
303932fd DB |
286 | } |
287 | } | |
288 | ||
254f796b | 289 | static unsigned long SA5_performant_completed(struct ctlr_info *h, u8 q) |
303932fd | 290 | { |
254f796b | 291 | struct reply_pool *rq = &h->reply_queue[q]; |
e16a33ad | 292 | unsigned long flags, register_value = FIFO_EMPTY; |
303932fd | 293 | |
303932fd DB |
294 | /* msi auto clears the interrupt pending bit. */ |
295 | if (!(h->msi_vector || h->msix_vector)) { | |
2c17d2da SC |
296 | /* flush the controller write of the reply queue by reading |
297 | * outbound doorbell status register. | |
298 | */ | |
299 | register_value = readl(h->vaddr + SA5_OUTDB_STATUS); | |
303932fd DB |
300 | writel(SA5_OUTDB_CLEAR_PERF_BIT, h->vaddr + SA5_OUTDB_CLEAR); |
301 | /* Do a read in order to flush the write to the controller | |
302 | * (as per spec.) | |
303 | */ | |
304 | register_value = readl(h->vaddr + SA5_OUTDB_STATUS); | |
305 | } | |
306 | ||
254f796b MG |
307 | if ((rq->head[rq->current_entry] & 1) == rq->wraparound) { |
308 | register_value = rq->head[rq->current_entry]; | |
309 | rq->current_entry++; | |
e16a33ad | 310 | spin_lock_irqsave(&h->lock, flags); |
303932fd | 311 | h->commands_outstanding--; |
e16a33ad | 312 | spin_unlock_irqrestore(&h->lock, flags); |
303932fd DB |
313 | } else { |
314 | register_value = FIFO_EMPTY; | |
315 | } | |
316 | /* Check for wraparound */ | |
254f796b MG |
317 | if (rq->current_entry == h->max_commands) { |
318 | rq->current_entry = 0; | |
319 | rq->wraparound ^= 1; | |
303932fd | 320 | } |
303932fd DB |
321 | return register_value; |
322 | } | |
323 | ||
edd16368 SC |
324 | /* |
325 | * Returns true if fifo is full. | |
326 | * | |
327 | */ | |
328 | static unsigned long SA5_fifo_full(struct ctlr_info *h) | |
329 | { | |
330 | if (h->commands_outstanding >= h->max_commands) | |
331 | return 1; | |
332 | else | |
333 | return 0; | |
334 | ||
335 | } | |
336 | /* | |
337 | * returns value read from hardware. | |
338 | * returns FIFO_EMPTY if there is nothing to read | |
339 | */ | |
254f796b MG |
340 | static unsigned long SA5_completed(struct ctlr_info *h, |
341 | __attribute__((unused)) u8 q) | |
edd16368 SC |
342 | { |
343 | unsigned long register_value | |
344 | = readl(h->vaddr + SA5_REPLY_PORT_OFFSET); | |
e16a33ad | 345 | unsigned long flags; |
edd16368 | 346 | |
e16a33ad MG |
347 | if (register_value != FIFO_EMPTY) { |
348 | spin_lock_irqsave(&h->lock, flags); | |
edd16368 | 349 | h->commands_outstanding--; |
e16a33ad MG |
350 | spin_unlock_irqrestore(&h->lock, flags); |
351 | } | |
edd16368 SC |
352 | |
353 | #ifdef HPSA_DEBUG | |
354 | if (register_value != FIFO_EMPTY) | |
84ca0be2 | 355 | dev_dbg(&h->pdev->dev, "Read %lx back from board\n", |
edd16368 SC |
356 | register_value); |
357 | else | |
f79cfec6 | 358 | dev_dbg(&h->pdev->dev, "FIFO Empty read\n"); |
edd16368 SC |
359 | #endif |
360 | ||
361 | return register_value; | |
362 | } | |
363 | /* | |
364 | * Returns true if an interrupt is pending.. | |
365 | */ | |
900c5440 | 366 | static bool SA5_intr_pending(struct ctlr_info *h) |
edd16368 SC |
367 | { |
368 | unsigned long register_value = | |
369 | readl(h->vaddr + SA5_INTR_STATUS); | |
84ca0be2 | 370 | dev_dbg(&h->pdev->dev, "intr_pending %lx\n", register_value); |
900c5440 | 371 | return register_value & SA5_INTR_PENDING; |
edd16368 SC |
372 | } |
373 | ||
303932fd DB |
374 | static bool SA5_performant_intr_pending(struct ctlr_info *h) |
375 | { | |
376 | unsigned long register_value = readl(h->vaddr + SA5_INTR_STATUS); | |
377 | ||
378 | if (!register_value) | |
379 | return false; | |
380 | ||
381 | if (h->msi_vector || h->msix_vector) | |
382 | return true; | |
383 | ||
384 | /* Read outbound doorbell to flush */ | |
385 | register_value = readl(h->vaddr + SA5_OUTDB_STATUS); | |
386 | return register_value & SA5_OUTDB_STATUS_PERF_BIT; | |
387 | } | |
edd16368 SC |
388 | |
389 | static struct access_method SA5_access = { | |
390 | SA5_submit_command, | |
391 | SA5_intr_mask, | |
392 | SA5_fifo_full, | |
393 | SA5_intr_pending, | |
394 | SA5_completed, | |
395 | }; | |
396 | ||
303932fd DB |
397 | static struct access_method SA5_performant_access = { |
398 | SA5_submit_command, | |
399 | SA5_performant_intr_mask, | |
400 | SA5_fifo_full, | |
401 | SA5_performant_intr_pending, | |
402 | SA5_performant_completed, | |
403 | }; | |
404 | ||
edd16368 | 405 | struct board_type { |
01a02ffc | 406 | u32 board_id; |
edd16368 SC |
407 | char *product_name; |
408 | struct access_method *access; | |
409 | }; | |
410 | ||
edd16368 SC |
411 | #endif /* HPSA_H */ |
412 |