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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); | |
900c5440 | 35 | bool (*intr_pending)(struct ctlr_info *h); |
254f796b | 36 | unsigned long (*command_completed)(struct ctlr_info *h, u8 q); |
edd16368 SC |
37 | }; |
38 | ||
39 | struct hpsa_scsi_dev_t { | |
40 | int devtype; | |
41 | int bus, target, lun; /* as presented to the OS */ | |
42 | unsigned char scsi3addr[8]; /* as presented to the HW */ | |
43 | #define RAID_CTLR_LUNID "\0\0\0\0\0\0\0\0" | |
44 | unsigned char device_id[16]; /* from inquiry pg. 0x83 */ | |
45 | unsigned char vendor[8]; /* bytes 8-15 of inquiry data */ | |
46 | unsigned char model[16]; /* bytes 16-31 of inquiry data */ | |
edd16368 | 47 | unsigned char raid_level; /* from inquiry page 0xC1 */ |
9846590e | 48 | unsigned char volume_offline; /* discovered via TUR or VPD */ |
03383736 DB |
49 | u16 queue_depth; /* max queue_depth for this device */ |
50 | atomic_t ioaccel_cmds_out; /* Only used for physical devices | |
51 | * counts commands sent to physical | |
52 | * device via "ioaccel" path. | |
53 | */ | |
e1f7de0c | 54 | u32 ioaccel_handle; |
283b4a9b SC |
55 | int offload_config; /* I/O accel RAID offload configured */ |
56 | int offload_enabled; /* I/O accel RAID offload enabled */ | |
41ce4c35 | 57 | int offload_to_be_enabled; |
283b4a9b SC |
58 | int offload_to_mirror; /* Send next I/O accelerator RAID |
59 | * offload request to mirror drive | |
60 | */ | |
61 | struct raid_map_data raid_map; /* I/O accelerator RAID map */ | |
62 | ||
03383736 DB |
63 | /* |
64 | * Pointers from logical drive map indices to the phys drives that | |
65 | * make those logical drives. Note, multiple logical drives may | |
66 | * share physical drives. You can have for instance 5 physical | |
67 | * drives with 3 logical drives each using those same 5 physical | |
68 | * disks. We need these pointers for counting i/o's out to physical | |
69 | * devices in order to honor physical device queue depth limits. | |
70 | */ | |
71 | struct hpsa_scsi_dev_t *phys_disk[RAID_MAP_MAX_ENTRIES]; | |
41ce4c35 SC |
72 | #define HPSA_DO_NOT_EXPOSE 0x0 |
73 | #define HPSA_SG_ATTACH 0x1 | |
74 | #define HPSA_ULD_ATTACH 0x2 | |
75 | #define HPSA_SCSI_ADD (HPSA_SG_ATTACH | HPSA_ULD_ATTACH) | |
76 | u8 expose_state; | |
edd16368 SC |
77 | }; |
78 | ||
072b0518 | 79 | struct reply_queue_buffer { |
254f796b MG |
80 | u64 *head; |
81 | size_t size; | |
82 | u8 wraparound; | |
83 | u32 current_entry; | |
072b0518 | 84 | dma_addr_t busaddr; |
254f796b MG |
85 | }; |
86 | ||
316b221a SC |
87 | #pragma pack(1) |
88 | struct bmic_controller_parameters { | |
89 | u8 led_flags; | |
90 | u8 enable_command_list_verification; | |
91 | u8 backed_out_write_drives; | |
92 | u16 stripes_for_parity; | |
93 | u8 parity_distribution_mode_flags; | |
94 | u16 max_driver_requests; | |
95 | u16 elevator_trend_count; | |
96 | u8 disable_elevator; | |
97 | u8 force_scan_complete; | |
98 | u8 scsi_transfer_mode; | |
99 | u8 force_narrow; | |
100 | u8 rebuild_priority; | |
101 | u8 expand_priority; | |
102 | u8 host_sdb_asic_fix; | |
103 | u8 pdpi_burst_from_host_disabled; | |
104 | char software_name[64]; | |
105 | char hardware_name[32]; | |
106 | u8 bridge_revision; | |
107 | u8 snapshot_priority; | |
108 | u32 os_specific; | |
109 | u8 post_prompt_timeout; | |
110 | u8 automatic_drive_slamming; | |
111 | u8 reserved1; | |
112 | u8 nvram_flags; | |
6e8e8088 | 113 | #define HBA_MODE_ENABLED_FLAG (1 << 3) |
316b221a SC |
114 | u8 cache_nvram_flags; |
115 | u8 drive_config_flags; | |
116 | u16 reserved2; | |
117 | u8 temp_warning_level; | |
118 | u8 temp_shutdown_level; | |
119 | u8 temp_condition_reset; | |
120 | u8 max_coalesce_commands; | |
121 | u32 max_coalesce_delay; | |
122 | u8 orca_password[4]; | |
123 | u8 access_id[16]; | |
124 | u8 reserved[356]; | |
125 | }; | |
126 | #pragma pack() | |
127 | ||
edd16368 SC |
128 | struct ctlr_info { |
129 | int ctlr; | |
130 | char devname[8]; | |
131 | char *product_name; | |
edd16368 | 132 | struct pci_dev *pdev; |
01a02ffc | 133 | u32 board_id; |
edd16368 SC |
134 | void __iomem *vaddr; |
135 | unsigned long paddr; | |
136 | int nr_cmds; /* Number of commands allowed on this controller */ | |
d54c5c24 SC |
137 | #define HPSA_CMDS_RESERVED_FOR_ABORTS 2 |
138 | #define HPSA_CMDS_RESERVED_FOR_DRIVER 1 | |
edd16368 SC |
139 | struct CfgTable __iomem *cfgtable; |
140 | int interrupts_enabled; | |
edd16368 | 141 | int max_commands; |
33811026 | 142 | int last_allocation; |
0cbf768e | 143 | atomic_t commands_outstanding; |
303932fd DB |
144 | # define PERF_MODE_INT 0 |
145 | # define DOORBELL_INT 1 | |
edd16368 SC |
146 | # define SIMPLE_MODE_INT 2 |
147 | # define MEMQ_MODE_INT 3 | |
254f796b | 148 | unsigned int intr[MAX_REPLY_QUEUES]; |
edd16368 SC |
149 | unsigned int msix_vector; |
150 | unsigned int msi_vector; | |
a9a3a273 | 151 | int intr_mode; /* either PERF_MODE_INT or SIMPLE_MODE_INT */ |
edd16368 | 152 | struct access_method access; |
316b221a | 153 | char hba_mode_enabled; |
edd16368 SC |
154 | |
155 | /* queue and queue Info */ | |
edd16368 | 156 | unsigned int Qdepth; |
edd16368 SC |
157 | unsigned int maxSG; |
158 | spinlock_t lock; | |
33a2ffce SC |
159 | int maxsgentries; |
160 | u8 max_cmd_sg_entries; | |
161 | int chainsize; | |
162 | struct SGDescriptor **cmd_sg_list; | |
edd16368 SC |
163 | |
164 | /* pointers to command and error info pool */ | |
165 | struct CommandList *cmd_pool; | |
166 | dma_addr_t cmd_pool_dhandle; | |
e1f7de0c MG |
167 | struct io_accel1_cmd *ioaccel_cmd_pool; |
168 | dma_addr_t ioaccel_cmd_pool_dhandle; | |
aca9012a SC |
169 | struct io_accel2_cmd *ioaccel2_cmd_pool; |
170 | dma_addr_t ioaccel2_cmd_pool_dhandle; | |
edd16368 SC |
171 | struct ErrorInfo *errinfo_pool; |
172 | dma_addr_t errinfo_pool_dhandle; | |
173 | unsigned long *cmd_pool_bits; | |
a08a8471 SC |
174 | int scan_finished; |
175 | spinlock_t scan_lock; | |
176 | wait_queue_head_t scan_wait_queue; | |
edd16368 SC |
177 | |
178 | struct Scsi_Host *scsi_host; | |
179 | spinlock_t devlock; /* to protect hba[ctlr]->dev[]; */ | |
180 | int ndevices; /* number of used elements in .dev[] array. */ | |
cfe5badc | 181 | struct hpsa_scsi_dev_t *dev[HPSA_MAX_DEVICES]; |
303932fd DB |
182 | /* |
183 | * Performant mode tables. | |
184 | */ | |
185 | u32 trans_support; | |
186 | u32 trans_offset; | |
42a91641 | 187 | struct TransTable_struct __iomem *transtable; |
303932fd DB |
188 | unsigned long transMethod; |
189 | ||
0390f0c0 | 190 | /* cap concurrent passthrus at some reasonable maximum */ |
45fcb86e | 191 | #define HPSA_MAX_CONCURRENT_PASSTHRUS (10) |
34f0c627 | 192 | atomic_t passthru_cmds_avail; |
0390f0c0 | 193 | |
303932fd | 194 | /* |
254f796b | 195 | * Performant mode completion buffers |
303932fd | 196 | */ |
072b0518 SC |
197 | size_t reply_queue_size; |
198 | struct reply_queue_buffer reply_queue[MAX_REPLY_QUEUES]; | |
254f796b | 199 | u8 nreply_queues; |
303932fd | 200 | u32 *blockFetchTable; |
e1f7de0c | 201 | u32 *ioaccel1_blockFetchTable; |
aca9012a | 202 | u32 *ioaccel2_blockFetchTable; |
42a91641 | 203 | u32 __iomem *ioaccel2_bft2_regs; |
339b2b14 | 204 | unsigned char *hba_inquiry_data; |
283b4a9b SC |
205 | u32 driver_support; |
206 | u32 fw_support; | |
207 | int ioaccel_support; | |
208 | int ioaccel_maxsg; | |
a0c12413 SC |
209 | u64 last_intr_timestamp; |
210 | u32 last_heartbeat; | |
211 | u64 last_heartbeat_timestamp; | |
e85c5974 SC |
212 | u32 heartbeat_sample_interval; |
213 | atomic_t firmware_flash_in_progress; | |
42a91641 | 214 | u32 __percpu *lockup_detected; |
8a98db73 | 215 | struct delayed_work monitor_ctlr_work; |
6636e7f4 | 216 | struct delayed_work rescan_ctlr_work; |
8a98db73 | 217 | int remove_in_progress; |
254f796b MG |
218 | /* Address of h->q[x] is passed to intr handler to know which queue */ |
219 | u8 q[MAX_REPLY_QUEUES]; | |
75167d2c SC |
220 | u32 TMFSupportFlags; /* cache what task mgmt funcs are supported. */ |
221 | #define HPSATMF_BITS_SUPPORTED (1 << 0) | |
222 | #define HPSATMF_PHYS_LUN_RESET (1 << 1) | |
223 | #define HPSATMF_PHYS_NEX_RESET (1 << 2) | |
224 | #define HPSATMF_PHYS_TASK_ABORT (1 << 3) | |
225 | #define HPSATMF_PHYS_TSET_ABORT (1 << 4) | |
226 | #define HPSATMF_PHYS_CLEAR_ACA (1 << 5) | |
227 | #define HPSATMF_PHYS_CLEAR_TSET (1 << 6) | |
228 | #define HPSATMF_PHYS_QRY_TASK (1 << 7) | |
229 | #define HPSATMF_PHYS_QRY_TSET (1 << 8) | |
230 | #define HPSATMF_PHYS_QRY_ASYNC (1 << 9) | |
231 | #define HPSATMF_MASK_SUPPORTED (1 << 16) | |
232 | #define HPSATMF_LOG_LUN_RESET (1 << 17) | |
233 | #define HPSATMF_LOG_NEX_RESET (1 << 18) | |
234 | #define HPSATMF_LOG_TASK_ABORT (1 << 19) | |
235 | #define HPSATMF_LOG_TSET_ABORT (1 << 20) | |
236 | #define HPSATMF_LOG_CLEAR_ACA (1 << 21) | |
237 | #define HPSATMF_LOG_CLEAR_TSET (1 << 22) | |
238 | #define HPSATMF_LOG_QRY_TASK (1 << 23) | |
239 | #define HPSATMF_LOG_QRY_TSET (1 << 24) | |
240 | #define HPSATMF_LOG_QRY_ASYNC (1 << 25) | |
76438d08 | 241 | u32 events; |
faff6ee0 SC |
242 | #define CTLR_STATE_CHANGE_EVENT (1 << 0) |
243 | #define CTLR_ENCLOSURE_HOT_PLUG_EVENT (1 << 1) | |
244 | #define CTLR_STATE_CHANGE_EVENT_PHYSICAL_DRV (1 << 4) | |
245 | #define CTLR_STATE_CHANGE_EVENT_LOGICAL_DRV (1 << 5) | |
246 | #define CTLR_STATE_CHANGE_EVENT_REDUNDANT_CNTRL (1 << 6) | |
247 | #define CTLR_STATE_CHANGE_EVENT_AIO_ENABLED_DISABLED (1 << 30) | |
248 | #define CTLR_STATE_CHANGE_EVENT_AIO_CONFIG_CHANGE (1 << 31) | |
249 | ||
250 | #define RESCAN_REQUIRED_EVENT_BITS \ | |
7b2c46ee | 251 | (CTLR_ENCLOSURE_HOT_PLUG_EVENT | \ |
faff6ee0 SC |
252 | CTLR_STATE_CHANGE_EVENT_PHYSICAL_DRV | \ |
253 | CTLR_STATE_CHANGE_EVENT_LOGICAL_DRV | \ | |
faff6ee0 SC |
254 | CTLR_STATE_CHANGE_EVENT_AIO_ENABLED_DISABLED | \ |
255 | CTLR_STATE_CHANGE_EVENT_AIO_CONFIG_CHANGE) | |
9846590e SC |
256 | spinlock_t offline_device_lock; |
257 | struct list_head offline_device_list; | |
da0697bd | 258 | int acciopath_status; |
2ba8bfc8 | 259 | int raid_offload_debug; |
080ef1cc | 260 | struct workqueue_struct *resubmit_wq; |
6636e7f4 | 261 | struct workqueue_struct *rescan_ctlr_wq; |
edd16368 | 262 | }; |
9846590e SC |
263 | |
264 | struct offline_device_entry { | |
265 | unsigned char scsi3addr[8]; | |
266 | struct list_head offline_list; | |
267 | }; | |
268 | ||
edd16368 SC |
269 | #define HPSA_ABORT_MSG 0 |
270 | #define HPSA_DEVICE_RESET_MSG 1 | |
64670ac8 SC |
271 | #define HPSA_RESET_TYPE_CONTROLLER 0x00 |
272 | #define HPSA_RESET_TYPE_BUS 0x01 | |
273 | #define HPSA_RESET_TYPE_TARGET 0x03 | |
274 | #define HPSA_RESET_TYPE_LUN 0x04 | |
edd16368 | 275 | #define HPSA_MSG_SEND_RETRY_LIMIT 10 |
516fda49 | 276 | #define HPSA_MSG_SEND_RETRY_INTERVAL_MSECS (10000) |
edd16368 SC |
277 | |
278 | /* Maximum time in seconds driver will wait for command completions | |
279 | * when polling before giving up. | |
280 | */ | |
281 | #define HPSA_MAX_POLL_TIME_SECS (20) | |
282 | ||
283 | /* During SCSI error recovery, HPSA_TUR_RETRY_LIMIT defines | |
284 | * how many times to retry TEST UNIT READY on a device | |
285 | * while waiting for it to become ready before giving up. | |
286 | * HPSA_MAX_WAIT_INTERVAL_SECS is the max wait interval | |
287 | * between sending TURs while waiting for a device | |
288 | * to become ready. | |
289 | */ | |
290 | #define HPSA_TUR_RETRY_LIMIT (20) | |
291 | #define HPSA_MAX_WAIT_INTERVAL_SECS (30) | |
292 | ||
293 | /* HPSA_BOARD_READY_WAIT_SECS is how long to wait for a board | |
294 | * to become ready, in seconds, before giving up on it. | |
295 | * HPSA_BOARD_READY_POLL_INTERVAL_MSECS * is how long to wait | |
296 | * between polling the board to see if it is ready, in | |
297 | * milliseconds. HPSA_BOARD_READY_POLL_INTERVAL and | |
298 | * HPSA_BOARD_READY_ITERATIONS are derived from those. | |
299 | */ | |
300 | #define HPSA_BOARD_READY_WAIT_SECS (120) | |
2ed7127b | 301 | #define HPSA_BOARD_NOT_READY_WAIT_SECS (100) |
edd16368 SC |
302 | #define HPSA_BOARD_READY_POLL_INTERVAL_MSECS (100) |
303 | #define HPSA_BOARD_READY_POLL_INTERVAL \ | |
304 | ((HPSA_BOARD_READY_POLL_INTERVAL_MSECS * HZ) / 1000) | |
305 | #define HPSA_BOARD_READY_ITERATIONS \ | |
306 | ((HPSA_BOARD_READY_WAIT_SECS * 1000) / \ | |
307 | HPSA_BOARD_READY_POLL_INTERVAL_MSECS) | |
fe5389c8 SC |
308 | #define HPSA_BOARD_NOT_READY_ITERATIONS \ |
309 | ((HPSA_BOARD_NOT_READY_WAIT_SECS * 1000) / \ | |
310 | HPSA_BOARD_READY_POLL_INTERVAL_MSECS) | |
edd16368 SC |
311 | #define HPSA_POST_RESET_PAUSE_MSECS (3000) |
312 | #define HPSA_POST_RESET_NOOP_RETRIES (12) | |
313 | ||
314 | /* Defining the diffent access_menthods */ | |
315 | /* | |
316 | * Memory mapped FIFO interface (SMART 53xx cards) | |
317 | */ | |
318 | #define SA5_DOORBELL 0x20 | |
319 | #define SA5_REQUEST_PORT_OFFSET 0x40 | |
281a7fd0 WS |
320 | #define SA5_REQUEST_PORT64_LO_OFFSET 0xC0 |
321 | #define SA5_REQUEST_PORT64_HI_OFFSET 0xC4 | |
edd16368 SC |
322 | #define SA5_REPLY_INTR_MASK_OFFSET 0x34 |
323 | #define SA5_REPLY_PORT_OFFSET 0x44 | |
324 | #define SA5_INTR_STATUS 0x30 | |
325 | #define SA5_SCRATCHPAD_OFFSET 0xB0 | |
326 | ||
327 | #define SA5_CTCFG_OFFSET 0xB4 | |
328 | #define SA5_CTMEM_OFFSET 0xB8 | |
329 | ||
330 | #define SA5_INTR_OFF 0x08 | |
331 | #define SA5B_INTR_OFF 0x04 | |
332 | #define SA5_INTR_PENDING 0x08 | |
333 | #define SA5B_INTR_PENDING 0x04 | |
334 | #define FIFO_EMPTY 0xffffffff | |
335 | #define HPSA_FIRMWARE_READY 0xffff0000 /* value in scratchpad register */ | |
336 | ||
337 | #define HPSA_ERROR_BIT 0x02 | |
edd16368 | 338 | |
303932fd DB |
339 | /* Performant mode flags */ |
340 | #define SA5_PERF_INTR_PENDING 0x04 | |
341 | #define SA5_PERF_INTR_OFF 0x05 | |
342 | #define SA5_OUTDB_STATUS_PERF_BIT 0x01 | |
343 | #define SA5_OUTDB_CLEAR_PERF_BIT 0x01 | |
344 | #define SA5_OUTDB_CLEAR 0xA0 | |
345 | #define SA5_OUTDB_CLEAR_PERF_BIT 0x01 | |
346 | #define SA5_OUTDB_STATUS 0x9C | |
347 | ||
348 | ||
edd16368 SC |
349 | #define HPSA_INTR_ON 1 |
350 | #define HPSA_INTR_OFF 0 | |
b66cc250 MM |
351 | |
352 | /* | |
353 | * Inbound Post Queue offsets for IO Accelerator Mode 2 | |
354 | */ | |
355 | #define IOACCEL2_INBOUND_POSTQ_32 0x48 | |
356 | #define IOACCEL2_INBOUND_POSTQ_64_LOW 0xd0 | |
357 | #define IOACCEL2_INBOUND_POSTQ_64_HI 0xd4 | |
358 | ||
edd16368 SC |
359 | /* |
360 | Send the command to the hardware | |
361 | */ | |
362 | static void SA5_submit_command(struct ctlr_info *h, | |
363 | struct CommandList *c) | |
364 | { | |
edd16368 | 365 | writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); |
fec62c36 | 366 | (void) readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); |
edd16368 SC |
367 | } |
368 | ||
b3a52e79 SC |
369 | static void SA5_submit_command_no_read(struct ctlr_info *h, |
370 | struct CommandList *c) | |
371 | { | |
372 | writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); | |
373 | } | |
374 | ||
c349775e ST |
375 | static void SA5_submit_command_ioaccel2(struct ctlr_info *h, |
376 | struct CommandList *c) | |
377 | { | |
c05e8866 | 378 | writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); |
c349775e ST |
379 | } |
380 | ||
edd16368 SC |
381 | /* |
382 | * This card is the opposite of the other cards. | |
383 | * 0 turns interrupts on... | |
384 | * 0x08 turns them off... | |
385 | */ | |
386 | static void SA5_intr_mask(struct ctlr_info *h, unsigned long val) | |
387 | { | |
388 | if (val) { /* Turn interrupts on */ | |
389 | h->interrupts_enabled = 1; | |
390 | writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
8cd21da7 | 391 | (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); |
edd16368 SC |
392 | } else { /* Turn them off */ |
393 | h->interrupts_enabled = 0; | |
394 | writel(SA5_INTR_OFF, | |
395 | h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
8cd21da7 | 396 | (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); |
edd16368 SC |
397 | } |
398 | } | |
303932fd DB |
399 | |
400 | static void SA5_performant_intr_mask(struct ctlr_info *h, unsigned long val) | |
401 | { | |
402 | if (val) { /* turn on interrupts */ | |
403 | h->interrupts_enabled = 1; | |
404 | writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
8cd21da7 | 405 | (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); |
303932fd DB |
406 | } else { |
407 | h->interrupts_enabled = 0; | |
408 | writel(SA5_PERF_INTR_OFF, | |
409 | h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
8cd21da7 | 410 | (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); |
303932fd DB |
411 | } |
412 | } | |
413 | ||
254f796b | 414 | static unsigned long SA5_performant_completed(struct ctlr_info *h, u8 q) |
303932fd | 415 | { |
072b0518 | 416 | struct reply_queue_buffer *rq = &h->reply_queue[q]; |
0cbf768e | 417 | unsigned long register_value = FIFO_EMPTY; |
303932fd | 418 | |
303932fd | 419 | /* msi auto clears the interrupt pending bit. */ |
bee266a6 | 420 | if (unlikely(!(h->msi_vector || h->msix_vector))) { |
2c17d2da SC |
421 | /* flush the controller write of the reply queue by reading |
422 | * outbound doorbell status register. | |
423 | */ | |
bee266a6 | 424 | (void) readl(h->vaddr + SA5_OUTDB_STATUS); |
303932fd DB |
425 | writel(SA5_OUTDB_CLEAR_PERF_BIT, h->vaddr + SA5_OUTDB_CLEAR); |
426 | /* Do a read in order to flush the write to the controller | |
427 | * (as per spec.) | |
428 | */ | |
bee266a6 | 429 | (void) readl(h->vaddr + SA5_OUTDB_STATUS); |
303932fd DB |
430 | } |
431 | ||
bee266a6 | 432 | if ((((u32) rq->head[rq->current_entry]) & 1) == rq->wraparound) { |
254f796b MG |
433 | register_value = rq->head[rq->current_entry]; |
434 | rq->current_entry++; | |
0cbf768e | 435 | atomic_dec(&h->commands_outstanding); |
303932fd DB |
436 | } else { |
437 | register_value = FIFO_EMPTY; | |
438 | } | |
439 | /* Check for wraparound */ | |
254f796b MG |
440 | if (rq->current_entry == h->max_commands) { |
441 | rq->current_entry = 0; | |
442 | rq->wraparound ^= 1; | |
303932fd | 443 | } |
303932fd DB |
444 | return register_value; |
445 | } | |
446 | ||
edd16368 SC |
447 | /* |
448 | * returns value read from hardware. | |
449 | * returns FIFO_EMPTY if there is nothing to read | |
450 | */ | |
254f796b MG |
451 | static unsigned long SA5_completed(struct ctlr_info *h, |
452 | __attribute__((unused)) u8 q) | |
edd16368 SC |
453 | { |
454 | unsigned long register_value | |
455 | = readl(h->vaddr + SA5_REPLY_PORT_OFFSET); | |
456 | ||
0cbf768e SC |
457 | if (register_value != FIFO_EMPTY) |
458 | atomic_dec(&h->commands_outstanding); | |
edd16368 SC |
459 | |
460 | #ifdef HPSA_DEBUG | |
461 | if (register_value != FIFO_EMPTY) | |
84ca0be2 | 462 | dev_dbg(&h->pdev->dev, "Read %lx back from board\n", |
edd16368 SC |
463 | register_value); |
464 | else | |
f79cfec6 | 465 | dev_dbg(&h->pdev->dev, "FIFO Empty read\n"); |
edd16368 SC |
466 | #endif |
467 | ||
468 | return register_value; | |
469 | } | |
470 | /* | |
471 | * Returns true if an interrupt is pending.. | |
472 | */ | |
900c5440 | 473 | static bool SA5_intr_pending(struct ctlr_info *h) |
edd16368 SC |
474 | { |
475 | unsigned long register_value = | |
476 | readl(h->vaddr + SA5_INTR_STATUS); | |
900c5440 | 477 | return register_value & SA5_INTR_PENDING; |
edd16368 SC |
478 | } |
479 | ||
303932fd DB |
480 | static bool SA5_performant_intr_pending(struct ctlr_info *h) |
481 | { | |
482 | unsigned long register_value = readl(h->vaddr + SA5_INTR_STATUS); | |
483 | ||
484 | if (!register_value) | |
485 | return false; | |
486 | ||
303932fd DB |
487 | /* Read outbound doorbell to flush */ |
488 | register_value = readl(h->vaddr + SA5_OUTDB_STATUS); | |
489 | return register_value & SA5_OUTDB_STATUS_PERF_BIT; | |
490 | } | |
edd16368 | 491 | |
e1f7de0c MG |
492 | #define SA5_IOACCEL_MODE1_INTR_STATUS_CMP_BIT 0x100 |
493 | ||
494 | static bool SA5_ioaccel_mode1_intr_pending(struct ctlr_info *h) | |
495 | { | |
496 | unsigned long register_value = readl(h->vaddr + SA5_INTR_STATUS); | |
497 | ||
498 | return (register_value & SA5_IOACCEL_MODE1_INTR_STATUS_CMP_BIT) ? | |
499 | true : false; | |
500 | } | |
501 | ||
502 | #define IOACCEL_MODE1_REPLY_QUEUE_INDEX 0x1A0 | |
503 | #define IOACCEL_MODE1_PRODUCER_INDEX 0x1B8 | |
504 | #define IOACCEL_MODE1_CONSUMER_INDEX 0x1BC | |
505 | #define IOACCEL_MODE1_REPLY_UNUSED 0xFFFFFFFFFFFFFFFFULL | |
506 | ||
283b4a9b | 507 | static unsigned long SA5_ioaccel_mode1_completed(struct ctlr_info *h, u8 q) |
e1f7de0c MG |
508 | { |
509 | u64 register_value; | |
072b0518 | 510 | struct reply_queue_buffer *rq = &h->reply_queue[q]; |
e1f7de0c MG |
511 | |
512 | BUG_ON(q >= h->nreply_queues); | |
513 | ||
514 | register_value = rq->head[rq->current_entry]; | |
515 | if (register_value != IOACCEL_MODE1_REPLY_UNUSED) { | |
516 | rq->head[rq->current_entry] = IOACCEL_MODE1_REPLY_UNUSED; | |
517 | if (++rq->current_entry == rq->size) | |
518 | rq->current_entry = 0; | |
283b4a9b SC |
519 | /* |
520 | * @todo | |
521 | * | |
522 | * Don't really need to write the new index after each command, | |
523 | * but with current driver design this is easiest. | |
524 | */ | |
525 | wmb(); | |
526 | writel((q << 24) | rq->current_entry, h->vaddr + | |
527 | IOACCEL_MODE1_CONSUMER_INDEX); | |
0cbf768e | 528 | atomic_dec(&h->commands_outstanding); |
e1f7de0c MG |
529 | } |
530 | return (unsigned long) register_value; | |
531 | } | |
532 | ||
edd16368 SC |
533 | static struct access_method SA5_access = { |
534 | SA5_submit_command, | |
535 | SA5_intr_mask, | |
edd16368 SC |
536 | SA5_intr_pending, |
537 | SA5_completed, | |
538 | }; | |
539 | ||
e1f7de0c MG |
540 | static struct access_method SA5_ioaccel_mode1_access = { |
541 | SA5_submit_command, | |
542 | SA5_performant_intr_mask, | |
e1f7de0c MG |
543 | SA5_ioaccel_mode1_intr_pending, |
544 | SA5_ioaccel_mode1_completed, | |
545 | }; | |
546 | ||
c349775e ST |
547 | static struct access_method SA5_ioaccel_mode2_access = { |
548 | SA5_submit_command_ioaccel2, | |
549 | SA5_performant_intr_mask, | |
c349775e ST |
550 | SA5_performant_intr_pending, |
551 | SA5_performant_completed, | |
552 | }; | |
553 | ||
303932fd DB |
554 | static struct access_method SA5_performant_access = { |
555 | SA5_submit_command, | |
556 | SA5_performant_intr_mask, | |
303932fd DB |
557 | SA5_performant_intr_pending, |
558 | SA5_performant_completed, | |
559 | }; | |
560 | ||
b3a52e79 SC |
561 | static struct access_method SA5_performant_access_no_read = { |
562 | SA5_submit_command_no_read, | |
563 | SA5_performant_intr_mask, | |
b3a52e79 SC |
564 | SA5_performant_intr_pending, |
565 | SA5_performant_completed, | |
566 | }; | |
567 | ||
edd16368 | 568 | struct board_type { |
01a02ffc | 569 | u32 board_id; |
edd16368 SC |
570 | char *product_name; |
571 | struct access_method *access; | |
572 | }; | |
573 | ||
edd16368 SC |
574 | #endif /* HPSA_H */ |
575 |