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1 /*
2 * Disk Array driver for HP Smart Array SAS controllers
3 * Copyright 2016 Microsemi Corporation
4 * Copyright 2014-2015 PMC-Sierra, Inc.
5 * Copyright 2000,2009-2015 Hewlett-Packard Development Company, L.P.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
14 * NON INFRINGEMENT. See the GNU General Public License for more details.
15 *
16 * Questions/Comments/Bugfixes to esc.storagedev@microsemi.com
17 *
18 */
19 #ifndef HPSA_H
20 #define HPSA_H
21
22 #include <scsi/scsicam.h>
23
24 #define IO_OK 0
25 #define IO_ERROR 1
26
27 struct ctlr_info;
28
29 struct access_method {
30 void (*submit_command)(struct ctlr_info *h,
31 struct CommandList *c);
32 void (*set_intr_mask)(struct ctlr_info *h, unsigned long val);
33 bool (*intr_pending)(struct ctlr_info *h);
34 unsigned long (*command_completed)(struct ctlr_info *h, u8 q);
35 };
36
37 /* for SAS hosts and SAS expanders */
38 struct hpsa_sas_node {
39 struct device *parent_dev;
40 struct list_head port_list_head;
41 };
42
43 struct hpsa_sas_port {
44 struct list_head port_list_entry;
45 u64 sas_address;
46 struct sas_port *port;
47 int next_phy_index;
48 struct list_head phy_list_head;
49 struct hpsa_sas_node *parent_node;
50 struct sas_rphy *rphy;
51 };
52
53 struct hpsa_sas_phy {
54 struct list_head phy_list_entry;
55 struct sas_phy *phy;
56 struct hpsa_sas_port *parent_port;
57 bool added_to_port;
58 };
59
60 #define EXTERNAL_QD 7
61 struct hpsa_scsi_dev_t {
62 unsigned int devtype;
63 int bus, target, lun; /* as presented to the OS */
64 unsigned char scsi3addr[8]; /* as presented to the HW */
65 u8 physical_device : 1;
66 u8 expose_device;
67 u8 removed : 1; /* device is marked for death */
68 #define RAID_CTLR_LUNID "\0\0\0\0\0\0\0\0"
69 unsigned char device_id[16]; /* from inquiry pg. 0x83 */
70 u64 sas_address;
71 unsigned char vendor[8]; /* bytes 8-15 of inquiry data */
72 unsigned char model[16]; /* bytes 16-31 of inquiry data */
73 unsigned char rev; /* byte 2 of inquiry data */
74 unsigned char raid_level; /* from inquiry page 0xC1 */
75 unsigned char volume_offline; /* discovered via TUR or VPD */
76 u16 queue_depth; /* max queue_depth for this device */
77 atomic_t reset_cmds_out; /* Count of commands to-be affected */
78 atomic_t ioaccel_cmds_out; /* Only used for physical devices
79 * counts commands sent to physical
80 * device via "ioaccel" path.
81 */
82 u32 ioaccel_handle;
83 u8 active_path_index;
84 u8 path_map;
85 u8 bay;
86 u8 box[8];
87 u16 phys_connector[8];
88 int offload_config; /* I/O accel RAID offload configured */
89 int offload_enabled; /* I/O accel RAID offload enabled */
90 int offload_to_be_enabled;
91 int hba_ioaccel_enabled;
92 int offload_to_mirror; /* Send next I/O accelerator RAID
93 * offload request to mirror drive
94 */
95 struct raid_map_data raid_map; /* I/O accelerator RAID map */
96
97 /*
98 * Pointers from logical drive map indices to the phys drives that
99 * make those logical drives. Note, multiple logical drives may
100 * share physical drives. You can have for instance 5 physical
101 * drives with 3 logical drives each using those same 5 physical
102 * disks. We need these pointers for counting i/o's out to physical
103 * devices in order to honor physical device queue depth limits.
104 */
105 struct hpsa_scsi_dev_t *phys_disk[RAID_MAP_MAX_ENTRIES];
106 int nphysical_disks;
107 int supports_aborts;
108 struct hpsa_sas_port *sas_port;
109 int external; /* 1-from external array 0-not <0-unknown */
110 };
111
112 struct reply_queue_buffer {
113 u64 *head;
114 size_t size;
115 u8 wraparound;
116 u32 current_entry;
117 dma_addr_t busaddr;
118 };
119
120 #pragma pack(1)
121 struct bmic_controller_parameters {
122 u8 led_flags;
123 u8 enable_command_list_verification;
124 u8 backed_out_write_drives;
125 u16 stripes_for_parity;
126 u8 parity_distribution_mode_flags;
127 u16 max_driver_requests;
128 u16 elevator_trend_count;
129 u8 disable_elevator;
130 u8 force_scan_complete;
131 u8 scsi_transfer_mode;
132 u8 force_narrow;
133 u8 rebuild_priority;
134 u8 expand_priority;
135 u8 host_sdb_asic_fix;
136 u8 pdpi_burst_from_host_disabled;
137 char software_name[64];
138 char hardware_name[32];
139 u8 bridge_revision;
140 u8 snapshot_priority;
141 u32 os_specific;
142 u8 post_prompt_timeout;
143 u8 automatic_drive_slamming;
144 u8 reserved1;
145 u8 nvram_flags;
146 u8 cache_nvram_flags;
147 u8 drive_config_flags;
148 u16 reserved2;
149 u8 temp_warning_level;
150 u8 temp_shutdown_level;
151 u8 temp_condition_reset;
152 u8 max_coalesce_commands;
153 u32 max_coalesce_delay;
154 u8 orca_password[4];
155 u8 access_id[16];
156 u8 reserved[356];
157 };
158 #pragma pack()
159
160 struct ctlr_info {
161 int ctlr;
162 char devname[8];
163 char *product_name;
164 struct pci_dev *pdev;
165 u32 board_id;
166 u64 sas_address;
167 void __iomem *vaddr;
168 unsigned long paddr;
169 int nr_cmds; /* Number of commands allowed on this controller */
170 #define HPSA_CMDS_RESERVED_FOR_ABORTS 2
171 #define HPSA_CMDS_RESERVED_FOR_DRIVER 1
172 struct CfgTable __iomem *cfgtable;
173 int interrupts_enabled;
174 int max_commands;
175 atomic_t commands_outstanding;
176 # define PERF_MODE_INT 0
177 # define DOORBELL_INT 1
178 # define SIMPLE_MODE_INT 2
179 # define MEMQ_MODE_INT 3
180 unsigned int msix_vectors;
181 int intr_mode; /* either PERF_MODE_INT or SIMPLE_MODE_INT */
182 struct access_method access;
183
184 /* queue and queue Info */
185 unsigned int Qdepth;
186 unsigned int maxSG;
187 spinlock_t lock;
188 int maxsgentries;
189 u8 max_cmd_sg_entries;
190 int chainsize;
191 struct SGDescriptor **cmd_sg_list;
192 struct ioaccel2_sg_element **ioaccel2_cmd_sg_list;
193
194 /* pointers to command and error info pool */
195 struct CommandList *cmd_pool;
196 dma_addr_t cmd_pool_dhandle;
197 struct io_accel1_cmd *ioaccel_cmd_pool;
198 dma_addr_t ioaccel_cmd_pool_dhandle;
199 struct io_accel2_cmd *ioaccel2_cmd_pool;
200 dma_addr_t ioaccel2_cmd_pool_dhandle;
201 struct ErrorInfo *errinfo_pool;
202 dma_addr_t errinfo_pool_dhandle;
203 unsigned long *cmd_pool_bits;
204 int scan_finished;
205 u8 scan_waiting : 1;
206 spinlock_t scan_lock;
207 wait_queue_head_t scan_wait_queue;
208
209 struct Scsi_Host *scsi_host;
210 spinlock_t devlock; /* to protect hba[ctlr]->dev[]; */
211 int ndevices; /* number of used elements in .dev[] array. */
212 struct hpsa_scsi_dev_t *dev[HPSA_MAX_DEVICES];
213 /*
214 * Performant mode tables.
215 */
216 u32 trans_support;
217 u32 trans_offset;
218 struct TransTable_struct __iomem *transtable;
219 unsigned long transMethod;
220
221 /* cap concurrent passthrus at some reasonable maximum */
222 #define HPSA_MAX_CONCURRENT_PASSTHRUS (10)
223 atomic_t passthru_cmds_avail;
224
225 /*
226 * Performant mode completion buffers
227 */
228 size_t reply_queue_size;
229 struct reply_queue_buffer reply_queue[MAX_REPLY_QUEUES];
230 u8 nreply_queues;
231 u32 *blockFetchTable;
232 u32 *ioaccel1_blockFetchTable;
233 u32 *ioaccel2_blockFetchTable;
234 u32 __iomem *ioaccel2_bft2_regs;
235 unsigned char *hba_inquiry_data;
236 u32 driver_support;
237 u32 fw_support;
238 int ioaccel_support;
239 int ioaccel_maxsg;
240 u64 last_intr_timestamp;
241 u32 last_heartbeat;
242 u64 last_heartbeat_timestamp;
243 u32 heartbeat_sample_interval;
244 atomic_t firmware_flash_in_progress;
245 u32 __percpu *lockup_detected;
246 struct delayed_work monitor_ctlr_work;
247 struct delayed_work rescan_ctlr_work;
248 struct delayed_work event_monitor_work;
249 int remove_in_progress;
250 /* Address of h->q[x] is passed to intr handler to know which queue */
251 u8 q[MAX_REPLY_QUEUES];
252 char intrname[MAX_REPLY_QUEUES][16]; /* "hpsa0-msix00" names */
253 u32 TMFSupportFlags; /* cache what task mgmt funcs are supported. */
254 #define HPSATMF_BITS_SUPPORTED (1 << 0)
255 #define HPSATMF_PHYS_LUN_RESET (1 << 1)
256 #define HPSATMF_PHYS_NEX_RESET (1 << 2)
257 #define HPSATMF_PHYS_TASK_ABORT (1 << 3)
258 #define HPSATMF_PHYS_TSET_ABORT (1 << 4)
259 #define HPSATMF_PHYS_CLEAR_ACA (1 << 5)
260 #define HPSATMF_PHYS_CLEAR_TSET (1 << 6)
261 #define HPSATMF_PHYS_QRY_TASK (1 << 7)
262 #define HPSATMF_PHYS_QRY_TSET (1 << 8)
263 #define HPSATMF_PHYS_QRY_ASYNC (1 << 9)
264 #define HPSATMF_IOACCEL_ENABLED (1 << 15)
265 #define HPSATMF_MASK_SUPPORTED (1 << 16)
266 #define HPSATMF_LOG_LUN_RESET (1 << 17)
267 #define HPSATMF_LOG_NEX_RESET (1 << 18)
268 #define HPSATMF_LOG_TASK_ABORT (1 << 19)
269 #define HPSATMF_LOG_TSET_ABORT (1 << 20)
270 #define HPSATMF_LOG_CLEAR_ACA (1 << 21)
271 #define HPSATMF_LOG_CLEAR_TSET (1 << 22)
272 #define HPSATMF_LOG_QRY_TASK (1 << 23)
273 #define HPSATMF_LOG_QRY_TSET (1 << 24)
274 #define HPSATMF_LOG_QRY_ASYNC (1 << 25)
275 u32 events;
276 #define CTLR_STATE_CHANGE_EVENT (1 << 0)
277 #define CTLR_ENCLOSURE_HOT_PLUG_EVENT (1 << 1)
278 #define CTLR_STATE_CHANGE_EVENT_PHYSICAL_DRV (1 << 4)
279 #define CTLR_STATE_CHANGE_EVENT_LOGICAL_DRV (1 << 5)
280 #define CTLR_STATE_CHANGE_EVENT_REDUNDANT_CNTRL (1 << 6)
281 #define CTLR_STATE_CHANGE_EVENT_AIO_ENABLED_DISABLED (1 << 30)
282 #define CTLR_STATE_CHANGE_EVENT_AIO_CONFIG_CHANGE (1 << 31)
283
284 #define RESCAN_REQUIRED_EVENT_BITS \
285 (CTLR_ENCLOSURE_HOT_PLUG_EVENT | \
286 CTLR_STATE_CHANGE_EVENT_PHYSICAL_DRV | \
287 CTLR_STATE_CHANGE_EVENT_LOGICAL_DRV | \
288 CTLR_STATE_CHANGE_EVENT_AIO_ENABLED_DISABLED | \
289 CTLR_STATE_CHANGE_EVENT_AIO_CONFIG_CHANGE)
290 spinlock_t offline_device_lock;
291 struct list_head offline_device_list;
292 int acciopath_status;
293 int drv_req_rescan;
294 int raid_offload_debug;
295 int discovery_polling;
296 struct ReportLUNdata *lastlogicals;
297 int needs_abort_tags_swizzled;
298 struct workqueue_struct *resubmit_wq;
299 struct workqueue_struct *rescan_ctlr_wq;
300 atomic_t abort_cmds_available;
301 wait_queue_head_t event_sync_wait_queue;
302 struct mutex reset_mutex;
303 u8 reset_in_progress;
304 struct hpsa_sas_node *sas_host;
305 spinlock_t reset_lock;
306 };
307
308 struct offline_device_entry {
309 unsigned char scsi3addr[8];
310 struct list_head offline_list;
311 };
312
313 #define HPSA_ABORT_MSG 0
314 #define HPSA_DEVICE_RESET_MSG 1
315 #define HPSA_RESET_TYPE_CONTROLLER 0x00
316 #define HPSA_RESET_TYPE_BUS 0x01
317 #define HPSA_RESET_TYPE_LUN 0x04
318 #define HPSA_PHYS_TARGET_RESET 0x99 /* not defined by cciss spec */
319 #define HPSA_MSG_SEND_RETRY_LIMIT 10
320 #define HPSA_MSG_SEND_RETRY_INTERVAL_MSECS (10000)
321
322 /* Maximum time in seconds driver will wait for command completions
323 * when polling before giving up.
324 */
325 #define HPSA_MAX_POLL_TIME_SECS (20)
326
327 /* During SCSI error recovery, HPSA_TUR_RETRY_LIMIT defines
328 * how many times to retry TEST UNIT READY on a device
329 * while waiting for it to become ready before giving up.
330 * HPSA_MAX_WAIT_INTERVAL_SECS is the max wait interval
331 * between sending TURs while waiting for a device
332 * to become ready.
333 */
334 #define HPSA_TUR_RETRY_LIMIT (20)
335 #define HPSA_MAX_WAIT_INTERVAL_SECS (30)
336
337 /* HPSA_BOARD_READY_WAIT_SECS is how long to wait for a board
338 * to become ready, in seconds, before giving up on it.
339 * HPSA_BOARD_READY_POLL_INTERVAL_MSECS * is how long to wait
340 * between polling the board to see if it is ready, in
341 * milliseconds. HPSA_BOARD_READY_POLL_INTERVAL and
342 * HPSA_BOARD_READY_ITERATIONS are derived from those.
343 */
344 #define HPSA_BOARD_READY_WAIT_SECS (120)
345 #define HPSA_BOARD_NOT_READY_WAIT_SECS (100)
346 #define HPSA_BOARD_READY_POLL_INTERVAL_MSECS (100)
347 #define HPSA_BOARD_READY_POLL_INTERVAL \
348 ((HPSA_BOARD_READY_POLL_INTERVAL_MSECS * HZ) / 1000)
349 #define HPSA_BOARD_READY_ITERATIONS \
350 ((HPSA_BOARD_READY_WAIT_SECS * 1000) / \
351 HPSA_BOARD_READY_POLL_INTERVAL_MSECS)
352 #define HPSA_BOARD_NOT_READY_ITERATIONS \
353 ((HPSA_BOARD_NOT_READY_WAIT_SECS * 1000) / \
354 HPSA_BOARD_READY_POLL_INTERVAL_MSECS)
355 #define HPSA_POST_RESET_PAUSE_MSECS (3000)
356 #define HPSA_POST_RESET_NOOP_RETRIES (12)
357
358 /* Defining the diffent access_menthods */
359 /*
360 * Memory mapped FIFO interface (SMART 53xx cards)
361 */
362 #define SA5_DOORBELL 0x20
363 #define SA5_REQUEST_PORT_OFFSET 0x40
364 #define SA5_REQUEST_PORT64_LO_OFFSET 0xC0
365 #define SA5_REQUEST_PORT64_HI_OFFSET 0xC4
366 #define SA5_REPLY_INTR_MASK_OFFSET 0x34
367 #define SA5_REPLY_PORT_OFFSET 0x44
368 #define SA5_INTR_STATUS 0x30
369 #define SA5_SCRATCHPAD_OFFSET 0xB0
370
371 #define SA5_CTCFG_OFFSET 0xB4
372 #define SA5_CTMEM_OFFSET 0xB8
373
374 #define SA5_INTR_OFF 0x08
375 #define SA5B_INTR_OFF 0x04
376 #define SA5_INTR_PENDING 0x08
377 #define SA5B_INTR_PENDING 0x04
378 #define FIFO_EMPTY 0xffffffff
379 #define HPSA_FIRMWARE_READY 0xffff0000 /* value in scratchpad register */
380
381 #define HPSA_ERROR_BIT 0x02
382
383 /* Performant mode flags */
384 #define SA5_PERF_INTR_PENDING 0x04
385 #define SA5_PERF_INTR_OFF 0x05
386 #define SA5_OUTDB_STATUS_PERF_BIT 0x01
387 #define SA5_OUTDB_CLEAR_PERF_BIT 0x01
388 #define SA5_OUTDB_CLEAR 0xA0
389 #define SA5_OUTDB_CLEAR_PERF_BIT 0x01
390 #define SA5_OUTDB_STATUS 0x9C
391
392
393 #define HPSA_INTR_ON 1
394 #define HPSA_INTR_OFF 0
395
396 /*
397 * Inbound Post Queue offsets for IO Accelerator Mode 2
398 */
399 #define IOACCEL2_INBOUND_POSTQ_32 0x48
400 #define IOACCEL2_INBOUND_POSTQ_64_LOW 0xd0
401 #define IOACCEL2_INBOUND_POSTQ_64_HI 0xd4
402
403 #define HPSA_PHYSICAL_DEVICE_BUS 0
404 #define HPSA_RAID_VOLUME_BUS 1
405 #define HPSA_EXTERNAL_RAID_VOLUME_BUS 2
406 #define HPSA_HBA_BUS 0
407 #define HPSA_LEGACY_HBA_BUS 3
408
409 /*
410 Send the command to the hardware
411 */
412 static void SA5_submit_command(struct ctlr_info *h,
413 struct CommandList *c)
414 {
415 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
416 (void) readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
417 }
418
419 static void SA5_submit_command_no_read(struct ctlr_info *h,
420 struct CommandList *c)
421 {
422 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
423 }
424
425 static void SA5_submit_command_ioaccel2(struct ctlr_info *h,
426 struct CommandList *c)
427 {
428 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
429 }
430
431 /*
432 * This card is the opposite of the other cards.
433 * 0 turns interrupts on...
434 * 0x08 turns them off...
435 */
436 static void SA5_intr_mask(struct ctlr_info *h, unsigned long val)
437 {
438 if (val) { /* Turn interrupts on */
439 h->interrupts_enabled = 1;
440 writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
441 (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
442 } else { /* Turn them off */
443 h->interrupts_enabled = 0;
444 writel(SA5_INTR_OFF,
445 h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
446 (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
447 }
448 }
449
450 static void SA5_performant_intr_mask(struct ctlr_info *h, unsigned long val)
451 {
452 if (val) { /* turn on interrupts */
453 h->interrupts_enabled = 1;
454 writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
455 (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
456 } else {
457 h->interrupts_enabled = 0;
458 writel(SA5_PERF_INTR_OFF,
459 h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
460 (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
461 }
462 }
463
464 static unsigned long SA5_performant_completed(struct ctlr_info *h, u8 q)
465 {
466 struct reply_queue_buffer *rq = &h->reply_queue[q];
467 unsigned long register_value = FIFO_EMPTY;
468
469 /* msi auto clears the interrupt pending bit. */
470 if (unlikely(!(h->pdev->msi_enabled || h->msix_vectors))) {
471 /* flush the controller write of the reply queue by reading
472 * outbound doorbell status register.
473 */
474 (void) readl(h->vaddr + SA5_OUTDB_STATUS);
475 writel(SA5_OUTDB_CLEAR_PERF_BIT, h->vaddr + SA5_OUTDB_CLEAR);
476 /* Do a read in order to flush the write to the controller
477 * (as per spec.)
478 */
479 (void) readl(h->vaddr + SA5_OUTDB_STATUS);
480 }
481
482 if ((((u32) rq->head[rq->current_entry]) & 1) == rq->wraparound) {
483 register_value = rq->head[rq->current_entry];
484 rq->current_entry++;
485 atomic_dec(&h->commands_outstanding);
486 } else {
487 register_value = FIFO_EMPTY;
488 }
489 /* Check for wraparound */
490 if (rq->current_entry == h->max_commands) {
491 rq->current_entry = 0;
492 rq->wraparound ^= 1;
493 }
494 return register_value;
495 }
496
497 /*
498 * returns value read from hardware.
499 * returns FIFO_EMPTY if there is nothing to read
500 */
501 static unsigned long SA5_completed(struct ctlr_info *h,
502 __attribute__((unused)) u8 q)
503 {
504 unsigned long register_value
505 = readl(h->vaddr + SA5_REPLY_PORT_OFFSET);
506
507 if (register_value != FIFO_EMPTY)
508 atomic_dec(&h->commands_outstanding);
509
510 #ifdef HPSA_DEBUG
511 if (register_value != FIFO_EMPTY)
512 dev_dbg(&h->pdev->dev, "Read %lx back from board\n",
513 register_value);
514 else
515 dev_dbg(&h->pdev->dev, "FIFO Empty read\n");
516 #endif
517
518 return register_value;
519 }
520 /*
521 * Returns true if an interrupt is pending..
522 */
523 static bool SA5_intr_pending(struct ctlr_info *h)
524 {
525 unsigned long register_value =
526 readl(h->vaddr + SA5_INTR_STATUS);
527 return register_value & SA5_INTR_PENDING;
528 }
529
530 static bool SA5_performant_intr_pending(struct ctlr_info *h)
531 {
532 unsigned long register_value = readl(h->vaddr + SA5_INTR_STATUS);
533
534 if (!register_value)
535 return false;
536
537 /* Read outbound doorbell to flush */
538 register_value = readl(h->vaddr + SA5_OUTDB_STATUS);
539 return register_value & SA5_OUTDB_STATUS_PERF_BIT;
540 }
541
542 #define SA5_IOACCEL_MODE1_INTR_STATUS_CMP_BIT 0x100
543
544 static bool SA5_ioaccel_mode1_intr_pending(struct ctlr_info *h)
545 {
546 unsigned long register_value = readl(h->vaddr + SA5_INTR_STATUS);
547
548 return (register_value & SA5_IOACCEL_MODE1_INTR_STATUS_CMP_BIT) ?
549 true : false;
550 }
551
552 #define IOACCEL_MODE1_REPLY_QUEUE_INDEX 0x1A0
553 #define IOACCEL_MODE1_PRODUCER_INDEX 0x1B8
554 #define IOACCEL_MODE1_CONSUMER_INDEX 0x1BC
555 #define IOACCEL_MODE1_REPLY_UNUSED 0xFFFFFFFFFFFFFFFFULL
556
557 static unsigned long SA5_ioaccel_mode1_completed(struct ctlr_info *h, u8 q)
558 {
559 u64 register_value;
560 struct reply_queue_buffer *rq = &h->reply_queue[q];
561
562 BUG_ON(q >= h->nreply_queues);
563
564 register_value = rq->head[rq->current_entry];
565 if (register_value != IOACCEL_MODE1_REPLY_UNUSED) {
566 rq->head[rq->current_entry] = IOACCEL_MODE1_REPLY_UNUSED;
567 if (++rq->current_entry == rq->size)
568 rq->current_entry = 0;
569 /*
570 * @todo
571 *
572 * Don't really need to write the new index after each command,
573 * but with current driver design this is easiest.
574 */
575 wmb();
576 writel((q << 24) | rq->current_entry, h->vaddr +
577 IOACCEL_MODE1_CONSUMER_INDEX);
578 atomic_dec(&h->commands_outstanding);
579 }
580 return (unsigned long) register_value;
581 }
582
583 static struct access_method SA5_access = {
584 .submit_command = SA5_submit_command,
585 .set_intr_mask = SA5_intr_mask,
586 .intr_pending = SA5_intr_pending,
587 .command_completed = SA5_completed,
588 };
589
590 static struct access_method SA5_ioaccel_mode1_access = {
591 .submit_command = SA5_submit_command,
592 .set_intr_mask = SA5_performant_intr_mask,
593 .intr_pending = SA5_ioaccel_mode1_intr_pending,
594 .command_completed = SA5_ioaccel_mode1_completed,
595 };
596
597 static struct access_method SA5_ioaccel_mode2_access = {
598 .submit_command = SA5_submit_command_ioaccel2,
599 .set_intr_mask = SA5_performant_intr_mask,
600 .intr_pending = SA5_performant_intr_pending,
601 .command_completed = SA5_performant_completed,
602 };
603
604 static struct access_method SA5_performant_access = {
605 .submit_command = SA5_submit_command,
606 .set_intr_mask = SA5_performant_intr_mask,
607 .intr_pending = SA5_performant_intr_pending,
608 .command_completed = SA5_performant_completed,
609 };
610
611 static struct access_method SA5_performant_access_no_read = {
612 .submit_command = SA5_submit_command_no_read,
613 .set_intr_mask = SA5_performant_intr_mask,
614 .intr_pending = SA5_performant_intr_pending,
615 .command_completed = SA5_performant_completed,
616 };
617
618 struct board_type {
619 u32 board_id;
620 char *product_name;
621 struct access_method *access;
622 };
623
624 #endif /* HPSA_H */
625