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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / scsi / myrs.c
blob5c5666491c2ee87f895363298abd34f2b8d07fbe
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Linux Driver for Mylex DAC960/AcceleRAID/eXtremeRAID PCI RAID Controllers
4 *
5 * This driver supports the newer, SCSI-based firmware interface only.
6 *
7 * Copyright 2017 Hannes Reinecke, SUSE Linux GmbH <hare@suse.com>
8 *
9 * Based on the original DAC960 driver, which has
10 * Copyright 1998-2001 by Leonard N. Zubkoff <lnz@dandelion.com>
11 * Portions Copyright 2002 by Mylex (An IBM Business Unit)
12 */
13
14 #include <linux/module.h>
15 #include <linux/types.h>
16 #include <linux/delay.h>
17 #include <linux/interrupt.h>
18 #include <linux/pci.h>
19 #include <linux/raid_class.h>
20 #include <asm/unaligned.h>
21 #include <scsi/scsi.h>
22 #include <scsi/scsi_host.h>
23 #include <scsi/scsi_device.h>
24 #include <scsi/scsi_cmnd.h>
25 #include <scsi/scsi_tcq.h>
26 #include "myrs.h"
27
28 static struct raid_template *myrs_raid_template;
29
30 static struct myrs_devstate_name_entry {
31 enum myrs_devstate state;
32 char *name;
33 } myrs_devstate_name_list[] = {
34 { MYRS_DEVICE_UNCONFIGURED, "Unconfigured" },
35 { MYRS_DEVICE_ONLINE, "Online" },
36 { MYRS_DEVICE_REBUILD, "Rebuild" },
37 { MYRS_DEVICE_MISSING, "Missing" },
38 { MYRS_DEVICE_SUSPECTED_CRITICAL, "SuspectedCritical" },
39 { MYRS_DEVICE_OFFLINE, "Offline" },
40 { MYRS_DEVICE_CRITICAL, "Critical" },
41 { MYRS_DEVICE_SUSPECTED_DEAD, "SuspectedDead" },
42 { MYRS_DEVICE_COMMANDED_OFFLINE, "CommandedOffline" },
43 { MYRS_DEVICE_STANDBY, "Standby" },
44 { MYRS_DEVICE_INVALID_STATE, "Invalid" },
45 };
46
47 static char *myrs_devstate_name(enum myrs_devstate state)
48 {
49 struct myrs_devstate_name_entry *entry = myrs_devstate_name_list;
50 int i;
51
52 for (i = 0; i < ARRAY_SIZE(myrs_devstate_name_list); i++) {
53 if (entry[i].state == state)
54 return entry[i].name;
55 }
56 return NULL;
57 }
58
59 static struct myrs_raid_level_name_entry {
60 enum myrs_raid_level level;
61 char *name;
62 } myrs_raid_level_name_list[] = {
63 { MYRS_RAID_LEVEL0, "RAID0" },
64 { MYRS_RAID_LEVEL1, "RAID1" },
65 { MYRS_RAID_LEVEL3, "RAID3 right asymmetric parity" },
66 { MYRS_RAID_LEVEL5, "RAID5 right asymmetric parity" },
67 { MYRS_RAID_LEVEL6, "RAID6" },
68 { MYRS_RAID_JBOD, "JBOD" },
69 { MYRS_RAID_NEWSPAN, "New Mylex SPAN" },
70 { MYRS_RAID_LEVEL3F, "RAID3 fixed parity" },
71 { MYRS_RAID_LEVEL3L, "RAID3 left symmetric parity" },
72 { MYRS_RAID_SPAN, "Mylex SPAN" },
73 { MYRS_RAID_LEVEL5L, "RAID5 left symmetric parity" },
74 { MYRS_RAID_LEVELE, "RAIDE (concatenation)" },
75 { MYRS_RAID_PHYSICAL, "Physical device" },
76 };
77
78 static char *myrs_raid_level_name(enum myrs_raid_level level)
79 {
80 struct myrs_raid_level_name_entry *entry = myrs_raid_level_name_list;
81 int i;
82
83 for (i = 0; i < ARRAY_SIZE(myrs_raid_level_name_list); i++) {
84 if (entry[i].level == level)
85 return entry[i].name;
86 }
87 return NULL;
88 }
89
90 /**
91 * myrs_reset_cmd - clears critical fields in struct myrs_cmdblk
92 */
93 static inline void myrs_reset_cmd(struct myrs_cmdblk *cmd_blk)
94 {
95 union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
96
97 memset(mbox, 0, sizeof(union myrs_cmd_mbox));
98 cmd_blk->status = 0;
99 }
100
101 /**
102 * myrs_qcmd - queues Command for DAC960 V2 Series Controllers.
103 */
104 static void myrs_qcmd(struct myrs_hba *cs, struct myrs_cmdblk *cmd_blk)
105 {
106 void __iomem *base = cs->io_base;
107 union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
108 union myrs_cmd_mbox *next_mbox = cs->next_cmd_mbox;
109
110 cs->write_cmd_mbox(next_mbox, mbox);
111
112 if (cs->prev_cmd_mbox1->words[0] == 0 ||
113 cs->prev_cmd_mbox2->words[0] == 0)
114 cs->get_cmd_mbox(base);
115
116 cs->prev_cmd_mbox2 = cs->prev_cmd_mbox1;
117 cs->prev_cmd_mbox1 = next_mbox;
118
119 if (++next_mbox > cs->last_cmd_mbox)
120 next_mbox = cs->first_cmd_mbox;
121
122 cs->next_cmd_mbox = next_mbox;
123 }
124
125 /**
126 * myrs_exec_cmd - executes V2 Command and waits for completion.
127 */
128 static void myrs_exec_cmd(struct myrs_hba *cs,
129 struct myrs_cmdblk *cmd_blk)
130 {
131 DECLARE_COMPLETION_ONSTACK(complete);
132 unsigned long flags;
133
134 cmd_blk->complete = &complete;
135 spin_lock_irqsave(&cs->queue_lock, flags);
136 myrs_qcmd(cs, cmd_blk);
137 spin_unlock_irqrestore(&cs->queue_lock, flags);
138
139 WARN_ON(in_interrupt());
140 wait_for_completion(&complete);
141 }
142
143 /**
144 * myrs_report_progress - prints progress message
145 */
146 static void myrs_report_progress(struct myrs_hba *cs, unsigned short ldev_num,
147 unsigned char *msg, unsigned long blocks,
148 unsigned long size)
149 {
150 shost_printk(KERN_INFO, cs->host,
151 "Logical Drive %d: %s in Progress: %d%% completed\n",
152 ldev_num, msg,
153 (100 * (int)(blocks >> 7)) / (int)(size >> 7));
154 }
155
156 /**
157 * myrs_get_ctlr_info - executes a Controller Information IOCTL Command
158 */
159 static unsigned char myrs_get_ctlr_info(struct myrs_hba *cs)
160 {
161 struct myrs_cmdblk *cmd_blk = &cs->dcmd_blk;
162 union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
163 dma_addr_t ctlr_info_addr;
164 union myrs_sgl *sgl;
165 unsigned char status;
166 unsigned short ldev_present, ldev_critical, ldev_offline;
167
168 ldev_present = cs->ctlr_info->ldev_present;
169 ldev_critical = cs->ctlr_info->ldev_critical;
170 ldev_offline = cs->ctlr_info->ldev_offline;
171
172 ctlr_info_addr = dma_map_single(&cs->pdev->dev, cs->ctlr_info,
173 sizeof(struct myrs_ctlr_info),
174 DMA_FROM_DEVICE);
175 if (dma_mapping_error(&cs->pdev->dev, ctlr_info_addr))
176 return MYRS_STATUS_FAILED;
177
178 mutex_lock(&cs->dcmd_mutex);
179 myrs_reset_cmd(cmd_blk);
180 mbox->ctlr_info.id = MYRS_DCMD_TAG;
181 mbox->ctlr_info.opcode = MYRS_CMD_OP_IOCTL;
182 mbox->ctlr_info.control.dma_ctrl_to_host = true;
183 mbox->ctlr_info.control.no_autosense = true;
184 mbox->ctlr_info.dma_size = sizeof(struct myrs_ctlr_info);
185 mbox->ctlr_info.ctlr_num = 0;
186 mbox->ctlr_info.ioctl_opcode = MYRS_IOCTL_GET_CTLR_INFO;
187 sgl = &mbox->ctlr_info.dma_addr;
188 sgl->sge[0].sge_addr = ctlr_info_addr;
189 sgl->sge[0].sge_count = mbox->ctlr_info.dma_size;
190 dev_dbg(&cs->host->shost_gendev, "Sending GetControllerInfo\n");
191 myrs_exec_cmd(cs, cmd_blk);
192 status = cmd_blk->status;
193 mutex_unlock(&cs->dcmd_mutex);
194 dma_unmap_single(&cs->pdev->dev, ctlr_info_addr,
195 sizeof(struct myrs_ctlr_info), DMA_FROM_DEVICE);
196 if (status == MYRS_STATUS_SUCCESS) {
197 if (cs->ctlr_info->bg_init_active +
198 cs->ctlr_info->ldev_init_active +
199 cs->ctlr_info->pdev_init_active +
200 cs->ctlr_info->cc_active +
201 cs->ctlr_info->rbld_active +
202 cs->ctlr_info->exp_active != 0)
203 cs->needs_update = true;
204 if (cs->ctlr_info->ldev_present != ldev_present ||
205 cs->ctlr_info->ldev_critical != ldev_critical ||
206 cs->ctlr_info->ldev_offline != ldev_offline)
207 shost_printk(KERN_INFO, cs->host,
208 "Logical drive count changes (%d/%d/%d)\n",
209 cs->ctlr_info->ldev_critical,
210 cs->ctlr_info->ldev_offline,
211 cs->ctlr_info->ldev_present);
212 }
213
214 return status;
215 }
216
217 /**
218 * myrs_get_ldev_info - executes a Logical Device Information IOCTL Command
219 */
220 static unsigned char myrs_get_ldev_info(struct myrs_hba *cs,
221 unsigned short ldev_num, struct myrs_ldev_info *ldev_info)
222 {
223 struct myrs_cmdblk *cmd_blk = &cs->dcmd_blk;
224 union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
225 dma_addr_t ldev_info_addr;
226 struct myrs_ldev_info ldev_info_orig;
227 union myrs_sgl *sgl;
228 unsigned char status;
229
230 memcpy(&ldev_info_orig, ldev_info, sizeof(struct myrs_ldev_info));
231 ldev_info_addr = dma_map_single(&cs->pdev->dev, ldev_info,
232 sizeof(struct myrs_ldev_info),
233 DMA_FROM_DEVICE);
234 if (dma_mapping_error(&cs->pdev->dev, ldev_info_addr))
235 return MYRS_STATUS_FAILED;
236
237 mutex_lock(&cs->dcmd_mutex);
238 myrs_reset_cmd(cmd_blk);
239 mbox->ldev_info.id = MYRS_DCMD_TAG;
240 mbox->ldev_info.opcode = MYRS_CMD_OP_IOCTL;
241 mbox->ldev_info.control.dma_ctrl_to_host = true;
242 mbox->ldev_info.control.no_autosense = true;
243 mbox->ldev_info.dma_size = sizeof(struct myrs_ldev_info);
244 mbox->ldev_info.ldev.ldev_num = ldev_num;
245 mbox->ldev_info.ioctl_opcode = MYRS_IOCTL_GET_LDEV_INFO_VALID;
246 sgl = &mbox->ldev_info.dma_addr;
247 sgl->sge[0].sge_addr = ldev_info_addr;
248 sgl->sge[0].sge_count = mbox->ldev_info.dma_size;
249 dev_dbg(&cs->host->shost_gendev,
250 "Sending GetLogicalDeviceInfoValid for ldev %d\n", ldev_num);
251 myrs_exec_cmd(cs, cmd_blk);
252 status = cmd_blk->status;
253 mutex_unlock(&cs->dcmd_mutex);
254 dma_unmap_single(&cs->pdev->dev, ldev_info_addr,
255 sizeof(struct myrs_ldev_info), DMA_FROM_DEVICE);
256 if (status == MYRS_STATUS_SUCCESS) {
257 unsigned short ldev_num = ldev_info->ldev_num;
258 struct myrs_ldev_info *new = ldev_info;
259 struct myrs_ldev_info *old = &ldev_info_orig;
260 unsigned long ldev_size = new->cfg_devsize;
261
262 if (new->dev_state != old->dev_state) {
263 const char *name;
264
265 name = myrs_devstate_name(new->dev_state);
266 shost_printk(KERN_INFO, cs->host,
267 "Logical Drive %d is now %s\n",
268 ldev_num, name ? name : "Invalid");
269 }
270 if ((new->soft_errs != old->soft_errs) ||
271 (new->cmds_failed != old->cmds_failed) ||
272 (new->deferred_write_errs != old->deferred_write_errs))
273 shost_printk(KERN_INFO, cs->host,
274 "Logical Drive %d Errors: Soft = %d, Failed = %d, Deferred Write = %d\n",
275 ldev_num, new->soft_errs,
276 new->cmds_failed,
277 new->deferred_write_errs);
278 if (new->bg_init_active)
279 myrs_report_progress(cs, ldev_num,
280 "Background Initialization",
281 new->bg_init_lba, ldev_size);
282 else if (new->fg_init_active)
283 myrs_report_progress(cs, ldev_num,
284 "Foreground Initialization",
285 new->fg_init_lba, ldev_size);
286 else if (new->migration_active)
287 myrs_report_progress(cs, ldev_num,
288 "Data Migration",
289 new->migration_lba, ldev_size);
290 else if (new->patrol_active)
291 myrs_report_progress(cs, ldev_num,
292 "Patrol Operation",
293 new->patrol_lba, ldev_size);
294 if (old->bg_init_active && !new->bg_init_active)
295 shost_printk(KERN_INFO, cs->host,
296 "Logical Drive %d: Background Initialization %s\n",
297 ldev_num,
298 (new->ldev_control.ldev_init_done ?
299 "Completed" : "Failed"));
300 }
301 return status;
302 }
303
304 /**
305 * myrs_get_pdev_info - executes a "Read Physical Device Information" Command
306 */
307 static unsigned char myrs_get_pdev_info(struct myrs_hba *cs,
308 unsigned char channel, unsigned char target, unsigned char lun,
309 struct myrs_pdev_info *pdev_info)
310 {
311 struct myrs_cmdblk *cmd_blk = &cs->dcmd_blk;
312 union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
313 dma_addr_t pdev_info_addr;
314 union myrs_sgl *sgl;
315 unsigned char status;
316
317 pdev_info_addr = dma_map_single(&cs->pdev->dev, pdev_info,
318 sizeof(struct myrs_pdev_info),
319 DMA_FROM_DEVICE);
320 if (dma_mapping_error(&cs->pdev->dev, pdev_info_addr))
321 return MYRS_STATUS_FAILED;
322
323 mutex_lock(&cs->dcmd_mutex);
324 myrs_reset_cmd(cmd_blk);
325 mbox->pdev_info.opcode = MYRS_CMD_OP_IOCTL;
326 mbox->pdev_info.id = MYRS_DCMD_TAG;
327 mbox->pdev_info.control.dma_ctrl_to_host = true;
328 mbox->pdev_info.control.no_autosense = true;
329 mbox->pdev_info.dma_size = sizeof(struct myrs_pdev_info);
330 mbox->pdev_info.pdev.lun = lun;
331 mbox->pdev_info.pdev.target = target;
332 mbox->pdev_info.pdev.channel = channel;
333 mbox->pdev_info.ioctl_opcode = MYRS_IOCTL_GET_PDEV_INFO_VALID;
334 sgl = &mbox->pdev_info.dma_addr;
335 sgl->sge[0].sge_addr = pdev_info_addr;
336 sgl->sge[0].sge_count = mbox->pdev_info.dma_size;
337 dev_dbg(&cs->host->shost_gendev,
338 "Sending GetPhysicalDeviceInfoValid for pdev %d:%d:%d\n",
339 channel, target, lun);
340 myrs_exec_cmd(cs, cmd_blk);
341 status = cmd_blk->status;
342 mutex_unlock(&cs->dcmd_mutex);
343 dma_unmap_single(&cs->pdev->dev, pdev_info_addr,
344 sizeof(struct myrs_pdev_info), DMA_FROM_DEVICE);
345 return status;
346 }
347
348 /**
349 * myrs_dev_op - executes a "Device Operation" Command
350 */
351 static unsigned char myrs_dev_op(struct myrs_hba *cs,
352 enum myrs_ioctl_opcode opcode, enum myrs_opdev opdev)
353 {
354 struct myrs_cmdblk *cmd_blk = &cs->dcmd_blk;
355 union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
356 unsigned char status;
357
358 mutex_lock(&cs->dcmd_mutex);
359 myrs_reset_cmd(cmd_blk);
360 mbox->dev_op.opcode = MYRS_CMD_OP_IOCTL;
361 mbox->dev_op.id = MYRS_DCMD_TAG;
362 mbox->dev_op.control.dma_ctrl_to_host = true;
363 mbox->dev_op.control.no_autosense = true;
364 mbox->dev_op.ioctl_opcode = opcode;
365 mbox->dev_op.opdev = opdev;
366 myrs_exec_cmd(cs, cmd_blk);
367 status = cmd_blk->status;
368 mutex_unlock(&cs->dcmd_mutex);
369 return status;
370 }
371
372 /**
373 * myrs_translate_pdev - translates a Physical Device Channel and
374 * TargetID into a Logical Device.
375 */
376 static unsigned char myrs_translate_pdev(struct myrs_hba *cs,
377 unsigned char channel, unsigned char target, unsigned char lun,
378 struct myrs_devmap *devmap)
379 {
380 struct pci_dev *pdev = cs->pdev;
381 dma_addr_t devmap_addr;
382 struct myrs_cmdblk *cmd_blk;
383 union myrs_cmd_mbox *mbox;
384 union myrs_sgl *sgl;
385 unsigned char status;
386
387 memset(devmap, 0x0, sizeof(struct myrs_devmap));
388 devmap_addr = dma_map_single(&pdev->dev, devmap,
389 sizeof(struct myrs_devmap),
390 DMA_FROM_DEVICE);
391 if (dma_mapping_error(&pdev->dev, devmap_addr))
392 return MYRS_STATUS_FAILED;
393
394 mutex_lock(&cs->dcmd_mutex);
395 cmd_blk = &cs->dcmd_blk;
396 mbox = &cmd_blk->mbox;
397 mbox->pdev_info.opcode = MYRS_CMD_OP_IOCTL;
398 mbox->pdev_info.control.dma_ctrl_to_host = true;
399 mbox->pdev_info.control.no_autosense = true;
400 mbox->pdev_info.dma_size = sizeof(struct myrs_devmap);
401 mbox->pdev_info.pdev.target = target;
402 mbox->pdev_info.pdev.channel = channel;
403 mbox->pdev_info.pdev.lun = lun;
404 mbox->pdev_info.ioctl_opcode = MYRS_IOCTL_XLATE_PDEV_TO_LDEV;
405 sgl = &mbox->pdev_info.dma_addr;
406 sgl->sge[0].sge_addr = devmap_addr;
407 sgl->sge[0].sge_count = mbox->pdev_info.dma_size;
408
409 myrs_exec_cmd(cs, cmd_blk);
410 status = cmd_blk->status;
411 mutex_unlock(&cs->dcmd_mutex);
412 dma_unmap_single(&pdev->dev, devmap_addr,
413 sizeof(struct myrs_devmap), DMA_FROM_DEVICE);
414 return status;
415 }
416
417 /**
418 * myrs_get_event - executes a Get Event Command
419 */
420 static unsigned char myrs_get_event(struct myrs_hba *cs,
421 unsigned int event_num, struct myrs_event *event_buf)
422 {
423 struct pci_dev *pdev = cs->pdev;
424 dma_addr_t event_addr;
425 struct myrs_cmdblk *cmd_blk = &cs->mcmd_blk;
426 union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
427 union myrs_sgl *sgl;
428 unsigned char status;
429
430 event_addr = dma_map_single(&pdev->dev, event_buf,
431 sizeof(struct myrs_event), DMA_FROM_DEVICE);
432 if (dma_mapping_error(&pdev->dev, event_addr))
433 return MYRS_STATUS_FAILED;
434
435 mbox->get_event.opcode = MYRS_CMD_OP_IOCTL;
436 mbox->get_event.dma_size = sizeof(struct myrs_event);
437 mbox->get_event.evnum_upper = event_num >> 16;
438 mbox->get_event.ctlr_num = 0;
439 mbox->get_event.ioctl_opcode = MYRS_IOCTL_GET_EVENT;
440 mbox->get_event.evnum_lower = event_num & 0xFFFF;
441 sgl = &mbox->get_event.dma_addr;
442 sgl->sge[0].sge_addr = event_addr;
443 sgl->sge[0].sge_count = mbox->get_event.dma_size;
444 myrs_exec_cmd(cs, cmd_blk);
445 status = cmd_blk->status;
446 dma_unmap_single(&pdev->dev, event_addr,
447 sizeof(struct myrs_event), DMA_FROM_DEVICE);
448
449 return status;
450 }
451
452 /*
453 * myrs_get_fwstatus - executes a Get Health Status Command
454 */
455 static unsigned char myrs_get_fwstatus(struct myrs_hba *cs)
456 {
457 struct myrs_cmdblk *cmd_blk = &cs->mcmd_blk;
458 union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
459 union myrs_sgl *sgl;
460 unsigned char status = cmd_blk->status;
461
462 myrs_reset_cmd(cmd_blk);
463 mbox->common.opcode = MYRS_CMD_OP_IOCTL;
464 mbox->common.id = MYRS_MCMD_TAG;
465 mbox->common.control.dma_ctrl_to_host = true;
466 mbox->common.control.no_autosense = true;
467 mbox->common.dma_size = sizeof(struct myrs_fwstat);
468 mbox->common.ioctl_opcode = MYRS_IOCTL_GET_HEALTH_STATUS;
469 sgl = &mbox->common.dma_addr;
470 sgl->sge[0].sge_addr = cs->fwstat_addr;
471 sgl->sge[0].sge_count = mbox->ctlr_info.dma_size;
472 dev_dbg(&cs->host->shost_gendev, "Sending GetHealthStatus\n");
473 myrs_exec_cmd(cs, cmd_blk);
474 status = cmd_blk->status;
475
476 return status;
477 }
478
479 /**
480 * myrs_enable_mmio_mbox - enables the Memory Mailbox Interface
481 */
482 static bool myrs_enable_mmio_mbox(struct myrs_hba *cs,
483 enable_mbox_t enable_mbox_fn)
484 {
485 void __iomem *base = cs->io_base;
486 struct pci_dev *pdev = cs->pdev;
487 union myrs_cmd_mbox *cmd_mbox;
488 struct myrs_stat_mbox *stat_mbox;
489 union myrs_cmd_mbox *mbox;
490 dma_addr_t mbox_addr;
491 unsigned char status = MYRS_STATUS_FAILED;
492
493 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)))
494 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
495 dev_err(&pdev->dev, "DMA mask out of range\n");
496 return false;
497 }
498
499 /* Temporary dma mapping, used only in the scope of this function */
500 mbox = dma_alloc_coherent(&pdev->dev, sizeof(union myrs_cmd_mbox),
501 &mbox_addr, GFP_KERNEL);
502 if (dma_mapping_error(&pdev->dev, mbox_addr))
503 return false;
504
505 /* These are the base addresses for the command memory mailbox array */
506 cs->cmd_mbox_size = MYRS_MAX_CMD_MBOX * sizeof(union myrs_cmd_mbox);
507 cmd_mbox = dma_alloc_coherent(&pdev->dev, cs->cmd_mbox_size,
508 &cs->cmd_mbox_addr, GFP_KERNEL);
509 if (dma_mapping_error(&pdev->dev, cs->cmd_mbox_addr)) {
510 dev_err(&pdev->dev, "Failed to map command mailbox\n");
511 goto out_free;
512 }
513 cs->first_cmd_mbox = cmd_mbox;
514 cmd_mbox += MYRS_MAX_CMD_MBOX - 1;
515 cs->last_cmd_mbox = cmd_mbox;
516 cs->next_cmd_mbox = cs->first_cmd_mbox;
517 cs->prev_cmd_mbox1 = cs->last_cmd_mbox;
518 cs->prev_cmd_mbox2 = cs->last_cmd_mbox - 1;
519
520 /* These are the base addresses for the status memory mailbox array */
521 cs->stat_mbox_size = MYRS_MAX_STAT_MBOX * sizeof(struct myrs_stat_mbox);
522 stat_mbox = dma_alloc_coherent(&pdev->dev, cs->stat_mbox_size,
523 &cs->stat_mbox_addr, GFP_KERNEL);
524 if (dma_mapping_error(&pdev->dev, cs->stat_mbox_addr)) {
525 dev_err(&pdev->dev, "Failed to map status mailbox\n");
526 goto out_free;
527 }
528
529 cs->first_stat_mbox = stat_mbox;
530 stat_mbox += MYRS_MAX_STAT_MBOX - 1;
531 cs->last_stat_mbox = stat_mbox;
532 cs->next_stat_mbox = cs->first_stat_mbox;
533
534 cs->fwstat_buf = dma_alloc_coherent(&pdev->dev,
535 sizeof(struct myrs_fwstat),
536 &cs->fwstat_addr, GFP_KERNEL);
537 if (dma_mapping_error(&pdev->dev, cs->fwstat_addr)) {
538 dev_err(&pdev->dev, "Failed to map firmware health buffer\n");
539 cs->fwstat_buf = NULL;
540 goto out_free;
541 }
542 cs->ctlr_info = kzalloc(sizeof(struct myrs_ctlr_info),
543 GFP_KERNEL | GFP_DMA);
544 if (!cs->ctlr_info)
545 goto out_free;
546
547 cs->event_buf = kzalloc(sizeof(struct myrs_event),
548 GFP_KERNEL | GFP_DMA);
549 if (!cs->event_buf)
550 goto out_free;
551
552 /* Enable the Memory Mailbox Interface. */
553 memset(mbox, 0, sizeof(union myrs_cmd_mbox));
554 mbox->set_mbox.id = 1;
555 mbox->set_mbox.opcode = MYRS_CMD_OP_IOCTL;
556 mbox->set_mbox.control.no_autosense = true;
557 mbox->set_mbox.first_cmd_mbox_size_kb =
558 (MYRS_MAX_CMD_MBOX * sizeof(union myrs_cmd_mbox)) >> 10;
559 mbox->set_mbox.first_stat_mbox_size_kb =
560 (MYRS_MAX_STAT_MBOX * sizeof(struct myrs_stat_mbox)) >> 10;
561 mbox->set_mbox.second_cmd_mbox_size_kb = 0;
562 mbox->set_mbox.second_stat_mbox_size_kb = 0;
563 mbox->set_mbox.sense_len = 0;
564 mbox->set_mbox.ioctl_opcode = MYRS_IOCTL_SET_MEM_MBOX;
565 mbox->set_mbox.fwstat_buf_size_kb = 1;
566 mbox->set_mbox.fwstat_buf_addr = cs->fwstat_addr;
567 mbox->set_mbox.first_cmd_mbox_addr = cs->cmd_mbox_addr;
568 mbox->set_mbox.first_stat_mbox_addr = cs->stat_mbox_addr;
569 status = enable_mbox_fn(base, mbox_addr);
570
571 out_free:
572 dma_free_coherent(&pdev->dev, sizeof(union myrs_cmd_mbox),
573 mbox, mbox_addr);
574 if (status != MYRS_STATUS_SUCCESS)
575 dev_err(&pdev->dev, "Failed to enable mailbox, status %X\n",
576 status);
577 return (status == MYRS_STATUS_SUCCESS);
578 }
579
580 /**
581 * myrs_get_config - reads the Configuration Information
582 */
583 static int myrs_get_config(struct myrs_hba *cs)
584 {
585 struct myrs_ctlr_info *info = cs->ctlr_info;
586 struct Scsi_Host *shost = cs->host;
587 unsigned char status;
588 unsigned char model[20];
589 unsigned char fw_version[12];
590 int i, model_len;
591
592 /* Get data into dma-able area, then copy into permanent location */
593 mutex_lock(&cs->cinfo_mutex);
594 status = myrs_get_ctlr_info(cs);
595 mutex_unlock(&cs->cinfo_mutex);
596 if (status != MYRS_STATUS_SUCCESS) {
597 shost_printk(KERN_ERR, shost,
598 "Failed to get controller information\n");
599 return -ENODEV;
600 }
601
602 /* Initialize the Controller Model Name and Full Model Name fields. */
603 model_len = sizeof(info->ctlr_name);
604 if (model_len > sizeof(model)-1)
605 model_len = sizeof(model)-1;
606 memcpy(model, info->ctlr_name, model_len);
607 model_len--;
608 while (model[model_len] == ' ' || model[model_len] == '\0')
609 model_len--;
610 model[++model_len] = '\0';
611 strcpy(cs->model_name, "DAC960 ");
612 strcat(cs->model_name, model);
613 /* Initialize the Controller Firmware Version field. */
614 sprintf(fw_version, "%d.%02d-%02d",
615 info->fw_major_version, info->fw_minor_version,
616 info->fw_turn_number);
617 if (info->fw_major_version == 6 &&
618 info->fw_minor_version == 0 &&
619 info->fw_turn_number < 1) {
620 shost_printk(KERN_WARNING, shost,
621 "FIRMWARE VERSION %s DOES NOT PROVIDE THE CONTROLLER\n"
622 "STATUS MONITORING FUNCTIONALITY NEEDED BY THIS DRIVER.\n"
623 "PLEASE UPGRADE TO VERSION 6.00-01 OR ABOVE.\n",
624 fw_version);
625 return -ENODEV;
626 }
627 /* Initialize the Controller Channels and Targets. */
628 shost->max_channel = info->physchan_present + info->virtchan_present;
629 shost->max_id = info->max_targets[0];
630 for (i = 1; i < 16; i++) {
631 if (!info->max_targets[i])
632 continue;
633 if (shost->max_id < info->max_targets[i])
634 shost->max_id = info->max_targets[i];
635 }
636
637 /*
638 * Initialize the Controller Queue Depth, Driver Queue Depth,
639 * Logical Drive Count, Maximum Blocks per Command, Controller
640 * Scatter/Gather Limit, and Driver Scatter/Gather Limit.
641 * The Driver Queue Depth must be at most three less than
642 * the Controller Queue Depth; tag '1' is reserved for
643 * direct commands, and tag '2' for monitoring commands.
644 */
645 shost->can_queue = info->max_tcq - 3;
646 if (shost->can_queue > MYRS_MAX_CMD_MBOX - 3)
647 shost->can_queue = MYRS_MAX_CMD_MBOX - 3;
648 shost->max_sectors = info->max_transfer_size;
649 shost->sg_tablesize = info->max_sge;
650 if (shost->sg_tablesize > MYRS_SG_LIMIT)
651 shost->sg_tablesize = MYRS_SG_LIMIT;
652
653 shost_printk(KERN_INFO, shost,
654 "Configuring %s PCI RAID Controller\n", model);
655 shost_printk(KERN_INFO, shost,
656 " Firmware Version: %s, Channels: %d, Memory Size: %dMB\n",
657 fw_version, info->physchan_present, info->mem_size_mb);
658
659 shost_printk(KERN_INFO, shost,
660 " Controller Queue Depth: %d, Maximum Blocks per Command: %d\n",
661 shost->can_queue, shost->max_sectors);
662
663 shost_printk(KERN_INFO, shost,
664 " Driver Queue Depth: %d, Scatter/Gather Limit: %d of %d Segments\n",
665 shost->can_queue, shost->sg_tablesize, MYRS_SG_LIMIT);
666 for (i = 0; i < info->physchan_max; i++) {
667 if (!info->max_targets[i])
668 continue;
669 shost_printk(KERN_INFO, shost,
670 " Device Channel %d: max %d devices\n",
671 i, info->max_targets[i]);
672 }
673 shost_printk(KERN_INFO, shost,
674 " Physical: %d/%d channels, %d disks, %d devices\n",
675 info->physchan_present, info->physchan_max,
676 info->pdisk_present, info->pdev_present);
677
678 shost_printk(KERN_INFO, shost,
679 " Logical: %d/%d channels, %d disks\n",
680 info->virtchan_present, info->virtchan_max,
681 info->ldev_present);
682 return 0;
683 }
684
685 /**
686 * myrs_log_event - prints a Controller Event message
687 */
688 static struct {
689 int ev_code;
690 unsigned char *ev_msg;
691 } myrs_ev_list[] = {
692 /* Physical Device Events (0x0000 - 0x007F) */
693 { 0x0001, "P Online" },
694 { 0x0002, "P Standby" },
695 { 0x0005, "P Automatic Rebuild Started" },
696 { 0x0006, "P Manual Rebuild Started" },
697 { 0x0007, "P Rebuild Completed" },
698 { 0x0008, "P Rebuild Cancelled" },
699 { 0x0009, "P Rebuild Failed for Unknown Reasons" },
700 { 0x000A, "P Rebuild Failed due to New Physical Device" },
701 { 0x000B, "P Rebuild Failed due to Logical Drive Failure" },
702 { 0x000C, "S Offline" },
703 { 0x000D, "P Found" },
704 { 0x000E, "P Removed" },
705 { 0x000F, "P Unconfigured" },
706 { 0x0010, "P Expand Capacity Started" },
707 { 0x0011, "P Expand Capacity Completed" },
708 { 0x0012, "P Expand Capacity Failed" },
709 { 0x0013, "P Command Timed Out" },
710 { 0x0014, "P Command Aborted" },
711 { 0x0015, "P Command Retried" },
712 { 0x0016, "P Parity Error" },
713 { 0x0017, "P Soft Error" },
714 { 0x0018, "P Miscellaneous Error" },
715 { 0x0019, "P Reset" },
716 { 0x001A, "P Active Spare Found" },
717 { 0x001B, "P Warm Spare Found" },
718 { 0x001C, "S Sense Data Received" },
719 { 0x001D, "P Initialization Started" },
720 { 0x001E, "P Initialization Completed" },
721 { 0x001F, "P Initialization Failed" },
722 { 0x0020, "P Initialization Cancelled" },
723 { 0x0021, "P Failed because Write Recovery Failed" },
724 { 0x0022, "P Failed because SCSI Bus Reset Failed" },
725 { 0x0023, "P Failed because of Double Check Condition" },
726 { 0x0024, "P Failed because Device Cannot Be Accessed" },
727 { 0x0025, "P Failed because of Gross Error on SCSI Processor" },
728 { 0x0026, "P Failed because of Bad Tag from Device" },
729 { 0x0027, "P Failed because of Command Timeout" },
730 { 0x0028, "P Failed because of System Reset" },
731 { 0x0029, "P Failed because of Busy Status or Parity Error" },
732 { 0x002A, "P Failed because Host Set Device to Failed State" },
733 { 0x002B, "P Failed because of Selection Timeout" },
734 { 0x002C, "P Failed because of SCSI Bus Phase Error" },
735 { 0x002D, "P Failed because Device Returned Unknown Status" },
736 { 0x002E, "P Failed because Device Not Ready" },
737 { 0x002F, "P Failed because Device Not Found at Startup" },
738 { 0x0030, "P Failed because COD Write Operation Failed" },
739 { 0x0031, "P Failed because BDT Write Operation Failed" },
740 { 0x0039, "P Missing at Startup" },
741 { 0x003A, "P Start Rebuild Failed due to Physical Drive Too Small" },
742 { 0x003C, "P Temporarily Offline Device Automatically Made Online" },
743 { 0x003D, "P Standby Rebuild Started" },
744 /* Logical Device Events (0x0080 - 0x00FF) */
745 { 0x0080, "M Consistency Check Started" },
746 { 0x0081, "M Consistency Check Completed" },
747 { 0x0082, "M Consistency Check Cancelled" },
748 { 0x0083, "M Consistency Check Completed With Errors" },
749 { 0x0084, "M Consistency Check Failed due to Logical Drive Failure" },
750 { 0x0085, "M Consistency Check Failed due to Physical Device Failure" },
751 { 0x0086, "L Offline" },
752 { 0x0087, "L Critical" },
753 { 0x0088, "L Online" },
754 { 0x0089, "M Automatic Rebuild Started" },
755 { 0x008A, "M Manual Rebuild Started" },
756 { 0x008B, "M Rebuild Completed" },
757 { 0x008C, "M Rebuild Cancelled" },
758 { 0x008D, "M Rebuild Failed for Unknown Reasons" },
759 { 0x008E, "M Rebuild Failed due to New Physical Device" },
760 { 0x008F, "M Rebuild Failed due to Logical Drive Failure" },
761 { 0x0090, "M Initialization Started" },
762 { 0x0091, "M Initialization Completed" },
763 { 0x0092, "M Initialization Cancelled" },
764 { 0x0093, "M Initialization Failed" },
765 { 0x0094, "L Found" },
766 { 0x0095, "L Deleted" },
767 { 0x0096, "M Expand Capacity Started" },
768 { 0x0097, "M Expand Capacity Completed" },
769 { 0x0098, "M Expand Capacity Failed" },
770 { 0x0099, "L Bad Block Found" },
771 { 0x009A, "L Size Changed" },
772 { 0x009B, "L Type Changed" },
773 { 0x009C, "L Bad Data Block Found" },
774 { 0x009E, "L Read of Data Block in BDT" },
775 { 0x009F, "L Write Back Data for Disk Block Lost" },
776 { 0x00A0, "L Temporarily Offline RAID-5/3 Drive Made Online" },
777 { 0x00A1, "L Temporarily Offline RAID-6/1/0/7 Drive Made Online" },
778 { 0x00A2, "L Standby Rebuild Started" },
779 /* Fault Management Events (0x0100 - 0x017F) */
780 { 0x0140, "E Fan %d Failed" },
781 { 0x0141, "E Fan %d OK" },
782 { 0x0142, "E Fan %d Not Present" },
783 { 0x0143, "E Power Supply %d Failed" },
784 { 0x0144, "E Power Supply %d OK" },
785 { 0x0145, "E Power Supply %d Not Present" },
786 { 0x0146, "E Temperature Sensor %d Temperature Exceeds Safe Limit" },
787 { 0x0147, "E Temperature Sensor %d Temperature Exceeds Working Limit" },
788 { 0x0148, "E Temperature Sensor %d Temperature Normal" },
789 { 0x0149, "E Temperature Sensor %d Not Present" },
790 { 0x014A, "E Enclosure Management Unit %d Access Critical" },
791 { 0x014B, "E Enclosure Management Unit %d Access OK" },
792 { 0x014C, "E Enclosure Management Unit %d Access Offline" },
793 /* Controller Events (0x0180 - 0x01FF) */
794 { 0x0181, "C Cache Write Back Error" },
795 { 0x0188, "C Battery Backup Unit Found" },
796 { 0x0189, "C Battery Backup Unit Charge Level Low" },
797 { 0x018A, "C Battery Backup Unit Charge Level OK" },
798 { 0x0193, "C Installation Aborted" },
799 { 0x0195, "C Battery Backup Unit Physically Removed" },
800 { 0x0196, "C Memory Error During Warm Boot" },
801 { 0x019E, "C Memory Soft ECC Error Corrected" },
802 { 0x019F, "C Memory Hard ECC Error Corrected" },
803 { 0x01A2, "C Battery Backup Unit Failed" },
804 { 0x01AB, "C Mirror Race Recovery Failed" },
805 { 0x01AC, "C Mirror Race on Critical Drive" },
806 /* Controller Internal Processor Events */
807 { 0x0380, "C Internal Controller Hung" },
808 { 0x0381, "C Internal Controller Firmware Breakpoint" },
809 { 0x0390, "C Internal Controller i960 Processor Specific Error" },
810 { 0x03A0, "C Internal Controller StrongARM Processor Specific Error" },
811 { 0, "" }
812 };
813
814 static void myrs_log_event(struct myrs_hba *cs, struct myrs_event *ev)
815 {
816 unsigned char msg_buf[MYRS_LINE_BUFFER_SIZE];
817 int ev_idx = 0, ev_code;
818 unsigned char ev_type, *ev_msg;
819 struct Scsi_Host *shost = cs->host;
820 struct scsi_device *sdev;
821 struct scsi_sense_hdr sshdr = {0};
822 unsigned char sense_info[4];
823 unsigned char cmd_specific[4];
824
825 if (ev->ev_code == 0x1C) {
826 if (!scsi_normalize_sense(ev->sense_data, 40, &sshdr)) {
827 memset(&sshdr, 0x0, sizeof(sshdr));
828 memset(sense_info, 0x0, sizeof(sense_info));
829 memset(cmd_specific, 0x0, sizeof(cmd_specific));
830 } else {
831 memcpy(sense_info, &ev->sense_data[3], 4);
832 memcpy(cmd_specific, &ev->sense_data[7], 4);
833 }
834 }
835 if (sshdr.sense_key == VENDOR_SPECIFIC &&
836 (sshdr.asc == 0x80 || sshdr.asc == 0x81))
837 ev->ev_code = ((sshdr.asc - 0x80) << 8 | sshdr.ascq);
838 while (true) {
839 ev_code = myrs_ev_list[ev_idx].ev_code;
840 if (ev_code == ev->ev_code || ev_code == 0)
841 break;
842 ev_idx++;
843 }
844 ev_type = myrs_ev_list[ev_idx].ev_msg[0];
845 ev_msg = &myrs_ev_list[ev_idx].ev_msg[2];
846 if (ev_code == 0) {
847 shost_printk(KERN_WARNING, shost,
848 "Unknown Controller Event Code %04X\n",
849 ev->ev_code);
850 return;
851 }
852 switch (ev_type) {
853 case 'P':
854 sdev = scsi_device_lookup(shost, ev->channel,
855 ev->target, 0);
856 sdev_printk(KERN_INFO, sdev, "event %d: Physical Device %s\n",
857 ev->ev_seq, ev_msg);
858 if (sdev && sdev->hostdata &&
859 sdev->channel < cs->ctlr_info->physchan_present) {
860 struct myrs_pdev_info *pdev_info = sdev->hostdata;
861
862 switch (ev->ev_code) {
863 case 0x0001:
864 case 0x0007:
865 pdev_info->dev_state = MYRS_DEVICE_ONLINE;
866 break;
867 case 0x0002:
868 pdev_info->dev_state = MYRS_DEVICE_STANDBY;
869 break;
870 case 0x000C:
871 pdev_info->dev_state = MYRS_DEVICE_OFFLINE;
872 break;
873 case 0x000E:
874 pdev_info->dev_state = MYRS_DEVICE_MISSING;
875 break;
876 case 0x000F:
877 pdev_info->dev_state = MYRS_DEVICE_UNCONFIGURED;
878 break;
879 }
880 }
881 break;
882 case 'L':
883 shost_printk(KERN_INFO, shost,
884 "event %d: Logical Drive %d %s\n",
885 ev->ev_seq, ev->lun, ev_msg);
886 cs->needs_update = true;
887 break;
888 case 'M':
889 shost_printk(KERN_INFO, shost,
890 "event %d: Logical Drive %d %s\n",
891 ev->ev_seq, ev->lun, ev_msg);
892 cs->needs_update = true;
893 break;
894 case 'S':
895 if (sshdr.sense_key == NO_SENSE ||
896 (sshdr.sense_key == NOT_READY &&
897 sshdr.asc == 0x04 && (sshdr.ascq == 0x01 ||
898 sshdr.ascq == 0x02)))
899 break;
900 shost_printk(KERN_INFO, shost,
901 "event %d: Physical Device %d:%d %s\n",
902 ev->ev_seq, ev->channel, ev->target, ev_msg);
903 shost_printk(KERN_INFO, shost,
904 "Physical Device %d:%d Sense Key = %X, ASC = %02X, ASCQ = %02X\n",
905 ev->channel, ev->target,
906 sshdr.sense_key, sshdr.asc, sshdr.ascq);
907 shost_printk(KERN_INFO, shost,
908 "Physical Device %d:%d Sense Information = %02X%02X%02X%02X %02X%02X%02X%02X\n",
909 ev->channel, ev->target,
910 sense_info[0], sense_info[1],
911 sense_info[2], sense_info[3],
912 cmd_specific[0], cmd_specific[1],
913 cmd_specific[2], cmd_specific[3]);
914 break;
915 case 'E':
916 if (cs->disable_enc_msg)
917 break;
918 sprintf(msg_buf, ev_msg, ev->lun);
919 shost_printk(KERN_INFO, shost, "event %d: Enclosure %d %s\n",
920 ev->ev_seq, ev->target, msg_buf);
921 break;
922 case 'C':
923 shost_printk(KERN_INFO, shost, "event %d: Controller %s\n",
924 ev->ev_seq, ev_msg);
925 break;
926 default:
927 shost_printk(KERN_INFO, shost,
928 "event %d: Unknown Event Code %04X\n",
929 ev->ev_seq, ev->ev_code);
930 break;
931 }
932 }
933
934 /*
935 * SCSI sysfs interface functions
936 */
937 static ssize_t raid_state_show(struct device *dev,
938 struct device_attribute *attr, char *buf)
939 {
940 struct scsi_device *sdev = to_scsi_device(dev);
941 struct myrs_hba *cs = shost_priv(sdev->host);
942 int ret;
943
944 if (!sdev->hostdata)
945 return snprintf(buf, 16, "Unknown\n");
946
947 if (sdev->channel >= cs->ctlr_info->physchan_present) {
948 struct myrs_ldev_info *ldev_info = sdev->hostdata;
949 const char *name;
950
951 name = myrs_devstate_name(ldev_info->dev_state);
952 if (name)
953 ret = snprintf(buf, 32, "%s\n", name);
954 else
955 ret = snprintf(buf, 32, "Invalid (%02X)\n",
956 ldev_info->dev_state);
957 } else {
958 struct myrs_pdev_info *pdev_info;
959 const char *name;
960
961 pdev_info = sdev->hostdata;
962 name = myrs_devstate_name(pdev_info->dev_state);
963 if (name)
964 ret = snprintf(buf, 32, "%s\n", name);
965 else
966 ret = snprintf(buf, 32, "Invalid (%02X)\n",
967 pdev_info->dev_state);
968 }
969 return ret;
970 }
971
972 static ssize_t raid_state_store(struct device *dev,
973 struct device_attribute *attr, const char *buf, size_t count)
974 {
975 struct scsi_device *sdev = to_scsi_device(dev);
976 struct myrs_hba *cs = shost_priv(sdev->host);
977 struct myrs_cmdblk *cmd_blk;
978 union myrs_cmd_mbox *mbox;
979 enum myrs_devstate new_state;
980 unsigned short ldev_num;
981 unsigned char status;
982
983 if (!strncmp(buf, "offline", 7) ||
984 !strncmp(buf, "kill", 4))
985 new_state = MYRS_DEVICE_OFFLINE;
986 else if (!strncmp(buf, "online", 6))
987 new_state = MYRS_DEVICE_ONLINE;
988 else if (!strncmp(buf, "standby", 7))
989 new_state = MYRS_DEVICE_STANDBY;
990 else
991 return -EINVAL;
992
993 if (sdev->channel < cs->ctlr_info->physchan_present) {
994 struct myrs_pdev_info *pdev_info = sdev->hostdata;
995 struct myrs_devmap *pdev_devmap =
996 (struct myrs_devmap *)&pdev_info->rsvd13;
997
998 if (pdev_info->dev_state == new_state) {
999 sdev_printk(KERN_INFO, sdev,
1000 "Device already in %s\n",
1001 myrs_devstate_name(new_state));
1002 return count;
1003 }
1004 status = myrs_translate_pdev(cs, sdev->channel, sdev->id,
1005 sdev->lun, pdev_devmap);
1006 if (status != MYRS_STATUS_SUCCESS)
1007 return -ENXIO;
1008 ldev_num = pdev_devmap->ldev_num;
1009 } else {
1010 struct myrs_ldev_info *ldev_info = sdev->hostdata;
1011
1012 if (ldev_info->dev_state == new_state) {
1013 sdev_printk(KERN_INFO, sdev,
1014 "Device already in %s\n",
1015 myrs_devstate_name(new_state));
1016 return count;
1017 }
1018 ldev_num = ldev_info->ldev_num;
1019 }
1020 mutex_lock(&cs->dcmd_mutex);
1021 cmd_blk = &cs->dcmd_blk;
1022 myrs_reset_cmd(cmd_blk);
1023 mbox = &cmd_blk->mbox;
1024 mbox->common.opcode = MYRS_CMD_OP_IOCTL;
1025 mbox->common.id = MYRS_DCMD_TAG;
1026 mbox->common.control.dma_ctrl_to_host = true;
1027 mbox->common.control.no_autosense = true;
1028 mbox->set_devstate.ioctl_opcode = MYRS_IOCTL_SET_DEVICE_STATE;
1029 mbox->set_devstate.state = new_state;
1030 mbox->set_devstate.ldev.ldev_num = ldev_num;
1031 myrs_exec_cmd(cs, cmd_blk);
1032 status = cmd_blk->status;
1033 mutex_unlock(&cs->dcmd_mutex);
1034 if (status == MYRS_STATUS_SUCCESS) {
1035 if (sdev->channel < cs->ctlr_info->physchan_present) {
1036 struct myrs_pdev_info *pdev_info = sdev->hostdata;
1037
1038 pdev_info->dev_state = new_state;
1039 } else {
1040 struct myrs_ldev_info *ldev_info = sdev->hostdata;
1041
1042 ldev_info->dev_state = new_state;
1043 }
1044 sdev_printk(KERN_INFO, sdev,
1045 "Set device state to %s\n",
1046 myrs_devstate_name(new_state));
1047 return count;
1048 }
1049 sdev_printk(KERN_INFO, sdev,
1050 "Failed to set device state to %s, status 0x%02x\n",
1051 myrs_devstate_name(new_state), status);
1052 return -EINVAL;
1053 }
1054 static DEVICE_ATTR_RW(raid_state);
1055
1056 static ssize_t raid_level_show(struct device *dev,
1057 struct device_attribute *attr, char *buf)
1058 {
1059 struct scsi_device *sdev = to_scsi_device(dev);
1060 struct myrs_hba *cs = shost_priv(sdev->host);
1061 const char *name = NULL;
1062
1063 if (!sdev->hostdata)
1064 return snprintf(buf, 16, "Unknown\n");
1065
1066 if (sdev->channel >= cs->ctlr_info->physchan_present) {
1067 struct myrs_ldev_info *ldev_info;
1068
1069 ldev_info = sdev->hostdata;
1070 name = myrs_raid_level_name(ldev_info->raid_level);
1071 if (!name)
1072 return snprintf(buf, 32, "Invalid (%02X)\n",
1073 ldev_info->dev_state);
1074
1075 } else
1076 name = myrs_raid_level_name(MYRS_RAID_PHYSICAL);
1077
1078 return snprintf(buf, 32, "%s\n", name);
1079 }
1080 static DEVICE_ATTR_RO(raid_level);
1081
1082 static ssize_t rebuild_show(struct device *dev,
1083 struct device_attribute *attr, char *buf)
1084 {
1085 struct scsi_device *sdev = to_scsi_device(dev);
1086 struct myrs_hba *cs = shost_priv(sdev->host);
1087 struct myrs_ldev_info *ldev_info;
1088 unsigned short ldev_num;
1089 unsigned char status;
1090
1091 if (sdev->channel < cs->ctlr_info->physchan_present)
1092 return snprintf(buf, 32, "physical device - not rebuilding\n");
1093
1094 ldev_info = sdev->hostdata;
1095 ldev_num = ldev_info->ldev_num;
1096 status = myrs_get_ldev_info(cs, ldev_num, ldev_info);
1097 if (status != MYRS_STATUS_SUCCESS) {
1098 sdev_printk(KERN_INFO, sdev,
1099 "Failed to get device information, status 0x%02x\n",
1100 status);
1101 return -EIO;
1102 }
1103 if (ldev_info->rbld_active) {
1104 return snprintf(buf, 32, "rebuilding block %zu of %zu\n",
1105 (size_t)ldev_info->rbld_lba,
1106 (size_t)ldev_info->cfg_devsize);
1107 } else
1108 return snprintf(buf, 32, "not rebuilding\n");
1109 }
1110
1111 static ssize_t rebuild_store(struct device *dev,
1112 struct device_attribute *attr, const char *buf, size_t count)
1113 {
1114 struct scsi_device *sdev = to_scsi_device(dev);
1115 struct myrs_hba *cs = shost_priv(sdev->host);
1116 struct myrs_ldev_info *ldev_info;
1117 struct myrs_cmdblk *cmd_blk;
1118 union myrs_cmd_mbox *mbox;
1119 unsigned short ldev_num;
1120 unsigned char status;
1121 int rebuild, ret;
1122
1123 if (sdev->channel < cs->ctlr_info->physchan_present)
1124 return -EINVAL;
1125
1126 ldev_info = sdev->hostdata;
1127 if (!ldev_info)
1128 return -ENXIO;
1129 ldev_num = ldev_info->ldev_num;
1130
1131 ret = kstrtoint(buf, 0, &rebuild);
1132 if (ret)
1133 return ret;
1134
1135 status = myrs_get_ldev_info(cs, ldev_num, ldev_info);
1136 if (status != MYRS_STATUS_SUCCESS) {
1137 sdev_printk(KERN_INFO, sdev,
1138 "Failed to get device information, status 0x%02x\n",
1139 status);
1140 return -EIO;
1141 }
1142
1143 if (rebuild && ldev_info->rbld_active) {
1144 sdev_printk(KERN_INFO, sdev,
1145 "Rebuild Not Initiated; already in progress\n");
1146 return -EALREADY;
1147 }
1148 if (!rebuild && !ldev_info->rbld_active) {
1149 sdev_printk(KERN_INFO, sdev,
1150 "Rebuild Not Cancelled; no rebuild in progress\n");
1151 return count;
1152 }
1153
1154 mutex_lock(&cs->dcmd_mutex);
1155 cmd_blk = &cs->dcmd_blk;
1156 myrs_reset_cmd(cmd_blk);
1157 mbox = &cmd_blk->mbox;
1158 mbox->common.opcode = MYRS_CMD_OP_IOCTL;
1159 mbox->common.id = MYRS_DCMD_TAG;
1160 mbox->common.control.dma_ctrl_to_host = true;
1161 mbox->common.control.no_autosense = true;
1162 if (rebuild) {
1163 mbox->ldev_info.ldev.ldev_num = ldev_num;
1164 mbox->ldev_info.ioctl_opcode = MYRS_IOCTL_RBLD_DEVICE_START;
1165 } else {
1166 mbox->ldev_info.ldev.ldev_num = ldev_num;
1167 mbox->ldev_info.ioctl_opcode = MYRS_IOCTL_RBLD_DEVICE_STOP;
1168 }
1169 myrs_exec_cmd(cs, cmd_blk);
1170 status = cmd_blk->status;
1171 mutex_unlock(&cs->dcmd_mutex);
1172 if (status) {
1173 sdev_printk(KERN_INFO, sdev,
1174 "Rebuild Not %s, status 0x%02x\n",
1175 rebuild ? "Initiated" : "Cancelled", status);
1176 ret = -EIO;
1177 } else {
1178 sdev_printk(KERN_INFO, sdev, "Rebuild %s\n",
1179 rebuild ? "Initiated" : "Cancelled");
1180 ret = count;
1181 }
1182
1183 return ret;
1184 }
1185 static DEVICE_ATTR_RW(rebuild);
1186
1187 static ssize_t consistency_check_show(struct device *dev,
1188 struct device_attribute *attr, char *buf)
1189 {
1190 struct scsi_device *sdev = to_scsi_device(dev);
1191 struct myrs_hba *cs = shost_priv(sdev->host);
1192 struct myrs_ldev_info *ldev_info;
1193 unsigned short ldev_num;
1194 unsigned char status;
1195
1196 if (sdev->channel < cs->ctlr_info->physchan_present)
1197 return snprintf(buf, 32, "physical device - not checking\n");
1198
1199 ldev_info = sdev->hostdata;
1200 if (!ldev_info)
1201 return -ENXIO;
1202 ldev_num = ldev_info->ldev_num;
1203 status = myrs_get_ldev_info(cs, ldev_num, ldev_info);
1204 if (ldev_info->cc_active)
1205 return snprintf(buf, 32, "checking block %zu of %zu\n",
1206 (size_t)ldev_info->cc_lba,
1207 (size_t)ldev_info->cfg_devsize);
1208 else
1209 return snprintf(buf, 32, "not checking\n");
1210 }
1211
1212 static ssize_t consistency_check_store(struct device *dev,
1213 struct device_attribute *attr, const char *buf, size_t count)
1214 {
1215 struct scsi_device *sdev = to_scsi_device(dev);
1216 struct myrs_hba *cs = shost_priv(sdev->host);
1217 struct myrs_ldev_info *ldev_info;
1218 struct myrs_cmdblk *cmd_blk;
1219 union myrs_cmd_mbox *mbox;
1220 unsigned short ldev_num;
1221 unsigned char status;
1222 int check, ret;
1223
1224 if (sdev->channel < cs->ctlr_info->physchan_present)
1225 return -EINVAL;
1226
1227 ldev_info = sdev->hostdata;
1228 if (!ldev_info)
1229 return -ENXIO;
1230 ldev_num = ldev_info->ldev_num;
1231
1232 ret = kstrtoint(buf, 0, &check);
1233 if (ret)
1234 return ret;
1235
1236 status = myrs_get_ldev_info(cs, ldev_num, ldev_info);
1237 if (status != MYRS_STATUS_SUCCESS) {
1238 sdev_printk(KERN_INFO, sdev,
1239 "Failed to get device information, status 0x%02x\n",
1240 status);
1241 return -EIO;
1242 }
1243 if (check && ldev_info->cc_active) {
1244 sdev_printk(KERN_INFO, sdev,
1245 "Consistency Check Not Initiated; "
1246 "already in progress\n");
1247 return -EALREADY;
1248 }
1249 if (!check && !ldev_info->cc_active) {
1250 sdev_printk(KERN_INFO, sdev,
1251 "Consistency Check Not Cancelled; "
1252 "check not in progress\n");
1253 return count;
1254 }
1255
1256 mutex_lock(&cs->dcmd_mutex);
1257 cmd_blk = &cs->dcmd_blk;
1258 myrs_reset_cmd(cmd_blk);
1259 mbox = &cmd_blk->mbox;
1260 mbox->common.opcode = MYRS_CMD_OP_IOCTL;
1261 mbox->common.id = MYRS_DCMD_TAG;
1262 mbox->common.control.dma_ctrl_to_host = true;
1263 mbox->common.control.no_autosense = true;
1264 if (check) {
1265 mbox->cc.ldev.ldev_num = ldev_num;
1266 mbox->cc.ioctl_opcode = MYRS_IOCTL_CC_START;
1267 mbox->cc.restore_consistency = true;
1268 mbox->cc.initialized_area_only = false;
1269 } else {
1270 mbox->cc.ldev.ldev_num = ldev_num;
1271 mbox->cc.ioctl_opcode = MYRS_IOCTL_CC_STOP;
1272 }
1273 myrs_exec_cmd(cs, cmd_blk);
1274 status = cmd_blk->status;
1275 mutex_unlock(&cs->dcmd_mutex);
1276 if (status != MYRS_STATUS_SUCCESS) {
1277 sdev_printk(KERN_INFO, sdev,
1278 "Consistency Check Not %s, status 0x%02x\n",
1279 check ? "Initiated" : "Cancelled", status);
1280 ret = -EIO;
1281 } else {
1282 sdev_printk(KERN_INFO, sdev, "Consistency Check %s\n",
1283 check ? "Initiated" : "Cancelled");
1284 ret = count;
1285 }
1286
1287 return ret;
1288 }
1289 static DEVICE_ATTR_RW(consistency_check);
1290
1291 static struct device_attribute *myrs_sdev_attrs[] = {
1292 &dev_attr_consistency_check,
1293 &dev_attr_rebuild,
1294 &dev_attr_raid_state,
1295 &dev_attr_raid_level,
1296 NULL,
1297 };
1298
1299 static ssize_t serial_show(struct device *dev,
1300 struct device_attribute *attr, char *buf)
1301 {
1302 struct Scsi_Host *shost = class_to_shost(dev);
1303 struct myrs_hba *cs = shost_priv(shost);
1304 char serial[17];
1305
1306 memcpy(serial, cs->ctlr_info->serial_number, 16);
1307 serial[16] = '\0';
1308 return snprintf(buf, 16, "%s\n", serial);
1309 }
1310 static DEVICE_ATTR_RO(serial);
1311
1312 static ssize_t ctlr_num_show(struct device *dev,
1313 struct device_attribute *attr, char *buf)
1314 {
1315 struct Scsi_Host *shost = class_to_shost(dev);
1316 struct myrs_hba *cs = shost_priv(shost);
1317
1318 return snprintf(buf, 20, "%d\n", cs->host->host_no);
1319 }
1320 static DEVICE_ATTR_RO(ctlr_num);
1321
1322 static struct myrs_cpu_type_tbl {
1323 enum myrs_cpu_type type;
1324 char *name;
1325 } myrs_cpu_type_names[] = {
1326 { MYRS_CPUTYPE_i960CA, "i960CA" },
1327 { MYRS_CPUTYPE_i960RD, "i960RD" },
1328 { MYRS_CPUTYPE_i960RN, "i960RN" },
1329 { MYRS_CPUTYPE_i960RP, "i960RP" },
1330 { MYRS_CPUTYPE_NorthBay, "NorthBay" },
1331 { MYRS_CPUTYPE_StrongArm, "StrongARM" },
1332 { MYRS_CPUTYPE_i960RM, "i960RM" },
1333 };
1334
1335 static ssize_t processor_show(struct device *dev,
1336 struct device_attribute *attr, char *buf)
1337 {
1338 struct Scsi_Host *shost = class_to_shost(dev);
1339 struct myrs_hba *cs = shost_priv(shost);
1340 struct myrs_cpu_type_tbl *tbl;
1341 const char *first_processor = NULL;
1342 const char *second_processor = NULL;
1343 struct myrs_ctlr_info *info = cs->ctlr_info;
1344 ssize_t ret;
1345 int i;
1346
1347 if (info->cpu[0].cpu_count) {
1348 tbl = myrs_cpu_type_names;
1349 for (i = 0; i < ARRAY_SIZE(myrs_cpu_type_names); i++) {
1350 if (tbl[i].type == info->cpu[0].cpu_type) {
1351 first_processor = tbl[i].name;
1352 break;
1353 }
1354 }
1355 }
1356 if (info->cpu[1].cpu_count) {
1357 tbl = myrs_cpu_type_names;
1358 for (i = 0; i < ARRAY_SIZE(myrs_cpu_type_names); i++) {
1359 if (tbl[i].type == info->cpu[1].cpu_type) {
1360 second_processor = tbl[i].name;
1361 break;
1362 }
1363 }
1364 }
1365 if (first_processor && second_processor)
1366 ret = snprintf(buf, 64, "1: %s (%s, %d cpus)\n"
1367 "2: %s (%s, %d cpus)\n",
1368 info->cpu[0].cpu_name,
1369 first_processor, info->cpu[0].cpu_count,
1370 info->cpu[1].cpu_name,
1371 second_processor, info->cpu[1].cpu_count);
1372 else if (first_processor && !second_processor)
1373 ret = snprintf(buf, 64, "1: %s (%s, %d cpus)\n2: absent\n",
1374 info->cpu[0].cpu_name,
1375 first_processor, info->cpu[0].cpu_count);
1376 else if (!first_processor && second_processor)
1377 ret = snprintf(buf, 64, "1: absent\n2: %s (%s, %d cpus)\n",
1378 info->cpu[1].cpu_name,
1379 second_processor, info->cpu[1].cpu_count);
1380 else
1381 ret = snprintf(buf, 64, "1: absent\n2: absent\n");
1382
1383 return ret;
1384 }
1385 static DEVICE_ATTR_RO(processor);
1386
1387 static ssize_t model_show(struct device *dev,
1388 struct device_attribute *attr, char *buf)
1389 {
1390 struct Scsi_Host *shost = class_to_shost(dev);
1391 struct myrs_hba *cs = shost_priv(shost);
1392
1393 return snprintf(buf, 28, "%s\n", cs->model_name);
1394 }
1395 static DEVICE_ATTR_RO(model);
1396
1397 static ssize_t ctlr_type_show(struct device *dev,
1398 struct device_attribute *attr, char *buf)
1399 {
1400 struct Scsi_Host *shost = class_to_shost(dev);
1401 struct myrs_hba *cs = shost_priv(shost);
1402
1403 return snprintf(buf, 4, "%d\n", cs->ctlr_info->ctlr_type);
1404 }
1405 static DEVICE_ATTR_RO(ctlr_type);
1406
1407 static ssize_t cache_size_show(struct device *dev,
1408 struct device_attribute *attr, char *buf)
1409 {
1410 struct Scsi_Host *shost = class_to_shost(dev);
1411 struct myrs_hba *cs = shost_priv(shost);
1412
1413 return snprintf(buf, 8, "%d MB\n", cs->ctlr_info->cache_size_mb);
1414 }
1415 static DEVICE_ATTR_RO(cache_size);
1416
1417 static ssize_t firmware_show(struct device *dev,
1418 struct device_attribute *attr, char *buf)
1419 {
1420 struct Scsi_Host *shost = class_to_shost(dev);
1421 struct myrs_hba *cs = shost_priv(shost);
1422
1423 return snprintf(buf, 16, "%d.%02d-%02d\n",
1424 cs->ctlr_info->fw_major_version,
1425 cs->ctlr_info->fw_minor_version,
1426 cs->ctlr_info->fw_turn_number);
1427 }
1428 static DEVICE_ATTR_RO(firmware);
1429
1430 static ssize_t discovery_store(struct device *dev,
1431 struct device_attribute *attr, const char *buf, size_t count)
1432 {
1433 struct Scsi_Host *shost = class_to_shost(dev);
1434 struct myrs_hba *cs = shost_priv(shost);
1435 struct myrs_cmdblk *cmd_blk;
1436 union myrs_cmd_mbox *mbox;
1437 unsigned char status;
1438
1439 mutex_lock(&cs->dcmd_mutex);
1440 cmd_blk = &cs->dcmd_blk;
1441 myrs_reset_cmd(cmd_blk);
1442 mbox = &cmd_blk->mbox;
1443 mbox->common.opcode = MYRS_CMD_OP_IOCTL;
1444 mbox->common.id = MYRS_DCMD_TAG;
1445 mbox->common.control.dma_ctrl_to_host = true;
1446 mbox->common.control.no_autosense = true;
1447 mbox->common.ioctl_opcode = MYRS_IOCTL_START_DISCOVERY;
1448 myrs_exec_cmd(cs, cmd_blk);
1449 status = cmd_blk->status;
1450 mutex_unlock(&cs->dcmd_mutex);
1451 if (status != MYRS_STATUS_SUCCESS) {
1452 shost_printk(KERN_INFO, shost,
1453 "Discovery Not Initiated, status %02X\n",
1454 status);
1455 return -EINVAL;
1456 }
1457 shost_printk(KERN_INFO, shost, "Discovery Initiated\n");
1458 cs->next_evseq = 0;
1459 cs->needs_update = true;
1460 queue_delayed_work(cs->work_q, &cs->monitor_work, 1);
1461 flush_delayed_work(&cs->monitor_work);
1462 shost_printk(KERN_INFO, shost, "Discovery Completed\n");
1463
1464 return count;
1465 }
1466 static DEVICE_ATTR_WO(discovery);
1467
1468 static ssize_t flush_cache_store(struct device *dev,
1469 struct device_attribute *attr, const char *buf, size_t count)
1470 {
1471 struct Scsi_Host *shost = class_to_shost(dev);
1472 struct myrs_hba *cs = shost_priv(shost);
1473 unsigned char status;
1474
1475 status = myrs_dev_op(cs, MYRS_IOCTL_FLUSH_DEVICE_DATA,
1476 MYRS_RAID_CONTROLLER);
1477 if (status == MYRS_STATUS_SUCCESS) {
1478 shost_printk(KERN_INFO, shost, "Cache Flush Completed\n");
1479 return count;
1480 }
1481 shost_printk(KERN_INFO, shost,
1482 "Cache Flush failed, status 0x%02x\n", status);
1483 return -EIO;
1484 }
1485 static DEVICE_ATTR_WO(flush_cache);
1486
1487 static ssize_t disable_enclosure_messages_show(struct device *dev,
1488 struct device_attribute *attr, char *buf)
1489 {
1490 struct Scsi_Host *shost = class_to_shost(dev);
1491 struct myrs_hba *cs = shost_priv(shost);
1492
1493 return snprintf(buf, 3, "%d\n", cs->disable_enc_msg);
1494 }
1495
1496 static ssize_t disable_enclosure_messages_store(struct device *dev,
1497 struct device_attribute *attr, const char *buf, size_t count)
1498 {
1499 struct scsi_device *sdev = to_scsi_device(dev);
1500 struct myrs_hba *cs = shost_priv(sdev->host);
1501 int value, ret;
1502
1503 ret = kstrtoint(buf, 0, &value);
1504 if (ret)
1505 return ret;
1506
1507 if (value > 2)
1508 return -EINVAL;
1509
1510 cs->disable_enc_msg = value;
1511 return count;
1512 }
1513 static DEVICE_ATTR_RW(disable_enclosure_messages);
1514
1515 static struct device_attribute *myrs_shost_attrs[] = {
1516 &dev_attr_serial,
1517 &dev_attr_ctlr_num,
1518 &dev_attr_processor,
1519 &dev_attr_model,
1520 &dev_attr_ctlr_type,
1521 &dev_attr_cache_size,
1522 &dev_attr_firmware,
1523 &dev_attr_discovery,
1524 &dev_attr_flush_cache,
1525 &dev_attr_disable_enclosure_messages,
1526 NULL,
1527 };
1528
1529 /*
1530 * SCSI midlayer interface
1531 */
1532 int myrs_host_reset(struct scsi_cmnd *scmd)
1533 {
1534 struct Scsi_Host *shost = scmd->device->host;
1535 struct myrs_hba *cs = shost_priv(shost);
1536
1537 cs->reset(cs->io_base);
1538 return SUCCESS;
1539 }
1540
1541 static void myrs_mode_sense(struct myrs_hba *cs, struct scsi_cmnd *scmd,
1542 struct myrs_ldev_info *ldev_info)
1543 {
1544 unsigned char modes[32], *mode_pg;
1545 bool dbd;
1546 size_t mode_len;
1547
1548 dbd = (scmd->cmnd[1] & 0x08) == 0x08;
1549 if (dbd) {
1550 mode_len = 24;
1551 mode_pg = &modes[4];
1552 } else {
1553 mode_len = 32;
1554 mode_pg = &modes[12];
1555 }
1556 memset(modes, 0, sizeof(modes));
1557 modes[0] = mode_len - 1;
1558 modes[2] = 0x10; /* Enable FUA */
1559 if (ldev_info->ldev_control.wce == MYRS_LOGICALDEVICE_RO)
1560 modes[2] |= 0x80;
1561 if (!dbd) {
1562 unsigned char *block_desc = &modes[4];
1563
1564 modes[3] = 8;
1565 put_unaligned_be32(ldev_info->cfg_devsize, &block_desc[0]);
1566 put_unaligned_be32(ldev_info->devsize_bytes, &block_desc[5]);
1567 }
1568 mode_pg[0] = 0x08;
1569 mode_pg[1] = 0x12;
1570 if (ldev_info->ldev_control.rce == MYRS_READCACHE_DISABLED)
1571 mode_pg[2] |= 0x01;
1572 if (ldev_info->ldev_control.wce == MYRS_WRITECACHE_ENABLED ||
1573 ldev_info->ldev_control.wce == MYRS_INTELLIGENT_WRITECACHE_ENABLED)
1574 mode_pg[2] |= 0x04;
1575 if (ldev_info->cacheline_size) {
1576 mode_pg[2] |= 0x08;
1577 put_unaligned_be16(1 << ldev_info->cacheline_size,
1578 &mode_pg[14]);
1579 }
1580
1581 scsi_sg_copy_from_buffer(scmd, modes, mode_len);
1582 }
1583
1584 static int myrs_queuecommand(struct Scsi_Host *shost,
1585 struct scsi_cmnd *scmd)
1586 {
1587 struct myrs_hba *cs = shost_priv(shost);
1588 struct myrs_cmdblk *cmd_blk = scsi_cmd_priv(scmd);
1589 union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
1590 struct scsi_device *sdev = scmd->device;
1591 union myrs_sgl *hw_sge;
1592 dma_addr_t sense_addr;
1593 struct scatterlist *sgl;
1594 unsigned long flags, timeout;
1595 int nsge;
1596
1597 if (!scmd->device->hostdata) {
1598 scmd->result = (DID_NO_CONNECT << 16);
1599 scmd->scsi_done(scmd);
1600 return 0;
1601 }
1602
1603 switch (scmd->cmnd[0]) {
1604 case REPORT_LUNS:
1605 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
1606 0x20, 0x0);
1607 scmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
1608 scmd->scsi_done(scmd);
1609 return 0;
1610 case MODE_SENSE:
1611 if (scmd->device->channel >= cs->ctlr_info->physchan_present) {
1612 struct myrs_ldev_info *ldev_info = sdev->hostdata;
1613
1614 if ((scmd->cmnd[2] & 0x3F) != 0x3F &&
1615 (scmd->cmnd[2] & 0x3F) != 0x08) {
1616 /* Illegal request, invalid field in CDB */
1617 scsi_build_sense_buffer(0, scmd->sense_buffer,
1618 ILLEGAL_REQUEST, 0x24, 0);
1619 scmd->result = (DRIVER_SENSE << 24) |
1620 SAM_STAT_CHECK_CONDITION;
1621 } else {
1622 myrs_mode_sense(cs, scmd, ldev_info);
1623 scmd->result = (DID_OK << 16);
1624 }
1625 scmd->scsi_done(scmd);
1626 return 0;
1627 }
1628 break;
1629 }
1630
1631 myrs_reset_cmd(cmd_blk);
1632 cmd_blk->sense = dma_pool_alloc(cs->sense_pool, GFP_ATOMIC,
1633 &sense_addr);
1634 if (!cmd_blk->sense)
1635 return SCSI_MLQUEUE_HOST_BUSY;
1636 cmd_blk->sense_addr = sense_addr;
1637
1638 timeout = scmd->request->timeout;
1639 if (scmd->cmd_len <= 10) {
1640 if (scmd->device->channel >= cs->ctlr_info->physchan_present) {
1641 struct myrs_ldev_info *ldev_info = sdev->hostdata;
1642
1643 mbox->SCSI_10.opcode = MYRS_CMD_OP_SCSI_10;
1644 mbox->SCSI_10.pdev.lun = ldev_info->lun;
1645 mbox->SCSI_10.pdev.target = ldev_info->target;
1646 mbox->SCSI_10.pdev.channel = ldev_info->channel;
1647 mbox->SCSI_10.pdev.ctlr = 0;
1648 } else {
1649 mbox->SCSI_10.opcode = MYRS_CMD_OP_SCSI_10_PASSTHRU;
1650 mbox->SCSI_10.pdev.lun = sdev->lun;
1651 mbox->SCSI_10.pdev.target = sdev->id;
1652 mbox->SCSI_10.pdev.channel = sdev->channel;
1653 }
1654 mbox->SCSI_10.id = scmd->request->tag + 3;
1655 mbox->SCSI_10.control.dma_ctrl_to_host =
1656 (scmd->sc_data_direction == DMA_FROM_DEVICE);
1657 if (scmd->request->cmd_flags & REQ_FUA)
1658 mbox->SCSI_10.control.fua = true;
1659 mbox->SCSI_10.dma_size = scsi_bufflen(scmd);
1660 mbox->SCSI_10.sense_addr = cmd_blk->sense_addr;
1661 mbox->SCSI_10.sense_len = MYRS_SENSE_SIZE;
1662 mbox->SCSI_10.cdb_len = scmd->cmd_len;
1663 if (timeout > 60) {
1664 mbox->SCSI_10.tmo.tmo_scale = MYRS_TMO_SCALE_MINUTES;
1665 mbox->SCSI_10.tmo.tmo_val = timeout / 60;
1666 } else {
1667 mbox->SCSI_10.tmo.tmo_scale = MYRS_TMO_SCALE_SECONDS;
1668 mbox->SCSI_10.tmo.tmo_val = timeout;
1669 }
1670 memcpy(&mbox->SCSI_10.cdb, scmd->cmnd, scmd->cmd_len);
1671 hw_sge = &mbox->SCSI_10.dma_addr;
1672 cmd_blk->dcdb = NULL;
1673 } else {
1674 dma_addr_t dcdb_dma;
1675
1676 cmd_blk->dcdb = dma_pool_alloc(cs->dcdb_pool, GFP_ATOMIC,
1677 &dcdb_dma);
1678 if (!cmd_blk->dcdb) {
1679 dma_pool_free(cs->sense_pool, cmd_blk->sense,
1680 cmd_blk->sense_addr);
1681 cmd_blk->sense = NULL;
1682 cmd_blk->sense_addr = 0;
1683 return SCSI_MLQUEUE_HOST_BUSY;
1684 }
1685 cmd_blk->dcdb_dma = dcdb_dma;
1686 if (scmd->device->channel >= cs->ctlr_info->physchan_present) {
1687 struct myrs_ldev_info *ldev_info = sdev->hostdata;
1688
1689 mbox->SCSI_255.opcode = MYRS_CMD_OP_SCSI_256;
1690 mbox->SCSI_255.pdev.lun = ldev_info->lun;
1691 mbox->SCSI_255.pdev.target = ldev_info->target;
1692 mbox->SCSI_255.pdev.channel = ldev_info->channel;
1693 mbox->SCSI_255.pdev.ctlr = 0;
1694 } else {
1695 mbox->SCSI_255.opcode = MYRS_CMD_OP_SCSI_255_PASSTHRU;
1696 mbox->SCSI_255.pdev.lun = sdev->lun;
1697 mbox->SCSI_255.pdev.target = sdev->id;
1698 mbox->SCSI_255.pdev.channel = sdev->channel;
1699 }
1700 mbox->SCSI_255.id = scmd->request->tag + 3;
1701 mbox->SCSI_255.control.dma_ctrl_to_host =
1702 (scmd->sc_data_direction == DMA_FROM_DEVICE);
1703 if (scmd->request->cmd_flags & REQ_FUA)
1704 mbox->SCSI_255.control.fua = true;
1705 mbox->SCSI_255.dma_size = scsi_bufflen(scmd);
1706 mbox->SCSI_255.sense_addr = cmd_blk->sense_addr;
1707 mbox->SCSI_255.sense_len = MYRS_SENSE_SIZE;
1708 mbox->SCSI_255.cdb_len = scmd->cmd_len;
1709 mbox->SCSI_255.cdb_addr = cmd_blk->dcdb_dma;
1710 if (timeout > 60) {
1711 mbox->SCSI_255.tmo.tmo_scale = MYRS_TMO_SCALE_MINUTES;
1712 mbox->SCSI_255.tmo.tmo_val = timeout / 60;
1713 } else {
1714 mbox->SCSI_255.tmo.tmo_scale = MYRS_TMO_SCALE_SECONDS;
1715 mbox->SCSI_255.tmo.tmo_val = timeout;
1716 }
1717 memcpy(cmd_blk->dcdb, scmd->cmnd, scmd->cmd_len);
1718 hw_sge = &mbox->SCSI_255.dma_addr;
1719 }
1720 if (scmd->sc_data_direction == DMA_NONE)
1721 goto submit;
1722 nsge = scsi_dma_map(scmd);
1723 if (nsge == 1) {
1724 sgl = scsi_sglist(scmd);
1725 hw_sge->sge[0].sge_addr = (u64)sg_dma_address(sgl);
1726 hw_sge->sge[0].sge_count = (u64)sg_dma_len(sgl);
1727 } else {
1728 struct myrs_sge *hw_sgl;
1729 dma_addr_t hw_sgl_addr;
1730 int i;
1731
1732 if (nsge > 2) {
1733 hw_sgl = dma_pool_alloc(cs->sg_pool, GFP_ATOMIC,
1734 &hw_sgl_addr);
1735 if (WARN_ON(!hw_sgl)) {
1736 if (cmd_blk->dcdb) {
1737 dma_pool_free(cs->dcdb_pool,
1738 cmd_blk->dcdb,
1739 cmd_blk->dcdb_dma);
1740 cmd_blk->dcdb = NULL;
1741 cmd_blk->dcdb_dma = 0;
1742 }
1743 dma_pool_free(cs->sense_pool,
1744 cmd_blk->sense,
1745 cmd_blk->sense_addr);
1746 cmd_blk->sense = NULL;
1747 cmd_blk->sense_addr = 0;
1748 return SCSI_MLQUEUE_HOST_BUSY;
1749 }
1750 cmd_blk->sgl = hw_sgl;
1751 cmd_blk->sgl_addr = hw_sgl_addr;
1752 if (scmd->cmd_len <= 10)
1753 mbox->SCSI_10.control.add_sge_mem = true;
1754 else
1755 mbox->SCSI_255.control.add_sge_mem = true;
1756 hw_sge->ext.sge0_len = nsge;
1757 hw_sge->ext.sge0_addr = cmd_blk->sgl_addr;
1758 } else
1759 hw_sgl = hw_sge->sge;
1760
1761 scsi_for_each_sg(scmd, sgl, nsge, i) {
1762 if (WARN_ON(!hw_sgl)) {
1763 scsi_dma_unmap(scmd);
1764 scmd->result = (DID_ERROR << 16);
1765 scmd->scsi_done(scmd);
1766 return 0;
1767 }
1768 hw_sgl->sge_addr = (u64)sg_dma_address(sgl);
1769 hw_sgl->sge_count = (u64)sg_dma_len(sgl);
1770 hw_sgl++;
1771 }
1772 }
1773 submit:
1774 spin_lock_irqsave(&cs->queue_lock, flags);
1775 myrs_qcmd(cs, cmd_blk);
1776 spin_unlock_irqrestore(&cs->queue_lock, flags);
1777
1778 return 0;
1779 }
1780
1781 static unsigned short myrs_translate_ldev(struct myrs_hba *cs,
1782 struct scsi_device *sdev)
1783 {
1784 unsigned short ldev_num;
1785 unsigned int chan_offset =
1786 sdev->channel - cs->ctlr_info->physchan_present;
1787
1788 ldev_num = sdev->id + chan_offset * sdev->host->max_id;
1789
1790 return ldev_num;
1791 }
1792
1793 static int myrs_slave_alloc(struct scsi_device *sdev)
1794 {
1795 struct myrs_hba *cs = shost_priv(sdev->host);
1796 unsigned char status;
1797
1798 if (sdev->channel > sdev->host->max_channel)
1799 return 0;
1800
1801 if (sdev->channel >= cs->ctlr_info->physchan_present) {
1802 struct myrs_ldev_info *ldev_info;
1803 unsigned short ldev_num;
1804
1805 if (sdev->lun > 0)
1806 return -ENXIO;
1807
1808 ldev_num = myrs_translate_ldev(cs, sdev);
1809
1810 ldev_info = kzalloc(sizeof(*ldev_info), GFP_KERNEL|GFP_DMA);
1811 if (!ldev_info)
1812 return -ENOMEM;
1813
1814 status = myrs_get_ldev_info(cs, ldev_num, ldev_info);
1815 if (status != MYRS_STATUS_SUCCESS) {
1816 sdev->hostdata = NULL;
1817 kfree(ldev_info);
1818 } else {
1819 enum raid_level level;
1820
1821 dev_dbg(&sdev->sdev_gendev,
1822 "Logical device mapping %d:%d:%d -> %d\n",
1823 ldev_info->channel, ldev_info->target,
1824 ldev_info->lun, ldev_info->ldev_num);
1825
1826 sdev->hostdata = ldev_info;
1827 switch (ldev_info->raid_level) {
1828 case MYRS_RAID_LEVEL0:
1829 level = RAID_LEVEL_LINEAR;
1830 break;
1831 case MYRS_RAID_LEVEL1:
1832 level = RAID_LEVEL_1;
1833 break;
1834 case MYRS_RAID_LEVEL3:
1835 case MYRS_RAID_LEVEL3F:
1836 case MYRS_RAID_LEVEL3L:
1837 level = RAID_LEVEL_3;
1838 break;
1839 case MYRS_RAID_LEVEL5:
1840 case MYRS_RAID_LEVEL5L:
1841 level = RAID_LEVEL_5;
1842 break;
1843 case MYRS_RAID_LEVEL6:
1844 level = RAID_LEVEL_6;
1845 break;
1846 case MYRS_RAID_LEVELE:
1847 case MYRS_RAID_NEWSPAN:
1848 case MYRS_RAID_SPAN:
1849 level = RAID_LEVEL_LINEAR;
1850 break;
1851 case MYRS_RAID_JBOD:
1852 level = RAID_LEVEL_JBOD;
1853 break;
1854 default:
1855 level = RAID_LEVEL_UNKNOWN;
1856 break;
1857 }
1858 raid_set_level(myrs_raid_template,
1859 &sdev->sdev_gendev, level);
1860 if (ldev_info->dev_state != MYRS_DEVICE_ONLINE) {
1861 const char *name;
1862
1863 name = myrs_devstate_name(ldev_info->dev_state);
1864 sdev_printk(KERN_DEBUG, sdev,
1865 "logical device in state %s\n",
1866 name ? name : "Invalid");
1867 }
1868 }
1869 } else {
1870 struct myrs_pdev_info *pdev_info;
1871
1872 pdev_info = kzalloc(sizeof(*pdev_info), GFP_KERNEL|GFP_DMA);
1873 if (!pdev_info)
1874 return -ENOMEM;
1875
1876 status = myrs_get_pdev_info(cs, sdev->channel,
1877 sdev->id, sdev->lun,
1878 pdev_info);
1879 if (status != MYRS_STATUS_SUCCESS) {
1880 sdev->hostdata = NULL;
1881 kfree(pdev_info);
1882 return -ENXIO;
1883 }
1884 sdev->hostdata = pdev_info;
1885 }
1886 return 0;
1887 }
1888
1889 static int myrs_slave_configure(struct scsi_device *sdev)
1890 {
1891 struct myrs_hba *cs = shost_priv(sdev->host);
1892 struct myrs_ldev_info *ldev_info;
1893
1894 if (sdev->channel > sdev->host->max_channel)
1895 return -ENXIO;
1896
1897 if (sdev->channel < cs->ctlr_info->physchan_present) {
1898 /* Skip HBA device */
1899 if (sdev->type == TYPE_RAID)
1900 return -ENXIO;
1901 sdev->no_uld_attach = 1;
1902 return 0;
1903 }
1904 if (sdev->lun != 0)
1905 return -ENXIO;
1906
1907 ldev_info = sdev->hostdata;
1908 if (!ldev_info)
1909 return -ENXIO;
1910 if (ldev_info->ldev_control.wce == MYRS_WRITECACHE_ENABLED ||
1911 ldev_info->ldev_control.wce == MYRS_INTELLIGENT_WRITECACHE_ENABLED)
1912 sdev->wce_default_on = 1;
1913 sdev->tagged_supported = 1;
1914 return 0;
1915 }
1916
1917 static void myrs_slave_destroy(struct scsi_device *sdev)
1918 {
1919 kfree(sdev->hostdata);
1920 }
1921
1922 struct scsi_host_template myrs_template = {
1923 .module = THIS_MODULE,
1924 .name = "DAC960",
1925 .proc_name = "myrs",
1926 .queuecommand = myrs_queuecommand,
1927 .eh_host_reset_handler = myrs_host_reset,
1928 .slave_alloc = myrs_slave_alloc,
1929 .slave_configure = myrs_slave_configure,
1930 .slave_destroy = myrs_slave_destroy,
1931 .cmd_size = sizeof(struct myrs_cmdblk),
1932 .shost_attrs = myrs_shost_attrs,
1933 .sdev_attrs = myrs_sdev_attrs,
1934 .this_id = -1,
1935 };
1936
1937 static struct myrs_hba *myrs_alloc_host(struct pci_dev *pdev,
1938 const struct pci_device_id *entry)
1939 {
1940 struct Scsi_Host *shost;
1941 struct myrs_hba *cs;
1942
1943 shost = scsi_host_alloc(&myrs_template, sizeof(struct myrs_hba));
1944 if (!shost)
1945 return NULL;
1946
1947 shost->max_cmd_len = 16;
1948 shost->max_lun = 256;
1949 cs = shost_priv(shost);
1950 mutex_init(&cs->dcmd_mutex);
1951 mutex_init(&cs->cinfo_mutex);
1952 cs->host = shost;
1953
1954 return cs;
1955 }
1956
1957 /*
1958 * RAID template functions
1959 */
1960
1961 /**
1962 * myrs_is_raid - return boolean indicating device is raid volume
1963 * @dev the device struct object
1964 */
1965 static int
1966 myrs_is_raid(struct device *dev)
1967 {
1968 struct scsi_device *sdev = to_scsi_device(dev);
1969 struct myrs_hba *cs = shost_priv(sdev->host);
1970
1971 return (sdev->channel >= cs->ctlr_info->physchan_present) ? 1 : 0;
1972 }
1973
1974 /**
1975 * myrs_get_resync - get raid volume resync percent complete
1976 * @dev the device struct object
1977 */
1978 static void
1979 myrs_get_resync(struct device *dev)
1980 {
1981 struct scsi_device *sdev = to_scsi_device(dev);
1982 struct myrs_hba *cs = shost_priv(sdev->host);
1983 struct myrs_ldev_info *ldev_info = sdev->hostdata;
1984 u64 percent_complete = 0;
1985 u8 status;
1986
1987 if (sdev->channel < cs->ctlr_info->physchan_present || !ldev_info)
1988 return;
1989 if (ldev_info->rbld_active) {
1990 unsigned short ldev_num = ldev_info->ldev_num;
1991
1992 status = myrs_get_ldev_info(cs, ldev_num, ldev_info);
1993 percent_complete = ldev_info->rbld_lba * 100;
1994 do_div(percent_complete, ldev_info->cfg_devsize);
1995 }
1996 raid_set_resync(myrs_raid_template, dev, percent_complete);
1997 }
1998
1999 /**
2000 * myrs_get_state - get raid volume status
2001 * @dev the device struct object
2002 */
2003 static void
2004 myrs_get_state(struct device *dev)
2005 {
2006 struct scsi_device *sdev = to_scsi_device(dev);
2007 struct myrs_hba *cs = shost_priv(sdev->host);
2008 struct myrs_ldev_info *ldev_info = sdev->hostdata;
2009 enum raid_state state = RAID_STATE_UNKNOWN;
2010
2011 if (sdev->channel < cs->ctlr_info->physchan_present || !ldev_info)
2012 state = RAID_STATE_UNKNOWN;
2013 else {
2014 switch (ldev_info->dev_state) {
2015 case MYRS_DEVICE_ONLINE:
2016 state = RAID_STATE_ACTIVE;
2017 break;
2018 case MYRS_DEVICE_SUSPECTED_CRITICAL:
2019 case MYRS_DEVICE_CRITICAL:
2020 state = RAID_STATE_DEGRADED;
2021 break;
2022 case MYRS_DEVICE_REBUILD:
2023 state = RAID_STATE_RESYNCING;
2024 break;
2025 case MYRS_DEVICE_UNCONFIGURED:
2026 case MYRS_DEVICE_INVALID_STATE:
2027 state = RAID_STATE_UNKNOWN;
2028 break;
2029 default:
2030 state = RAID_STATE_OFFLINE;
2031 }
2032 }
2033 raid_set_state(myrs_raid_template, dev, state);
2034 }
2035
2036 struct raid_function_template myrs_raid_functions = {
2037 .cookie = &myrs_template,
2038 .is_raid = myrs_is_raid,
2039 .get_resync = myrs_get_resync,
2040 .get_state = myrs_get_state,
2041 };
2042
2043 /*
2044 * PCI interface functions
2045 */
2046 void myrs_flush_cache(struct myrs_hba *cs)
2047 {
2048 myrs_dev_op(cs, MYRS_IOCTL_FLUSH_DEVICE_DATA, MYRS_RAID_CONTROLLER);
2049 }
2050
2051 static void myrs_handle_scsi(struct myrs_hba *cs, struct myrs_cmdblk *cmd_blk,
2052 struct scsi_cmnd *scmd)
2053 {
2054 unsigned char status;
2055
2056 if (!cmd_blk)
2057 return;
2058
2059 scsi_dma_unmap(scmd);
2060 status = cmd_blk->status;
2061 if (cmd_blk->sense) {
2062 if (status == MYRS_STATUS_FAILED && cmd_blk->sense_len) {
2063 unsigned int sense_len = SCSI_SENSE_BUFFERSIZE;
2064
2065 if (sense_len > cmd_blk->sense_len)
2066 sense_len = cmd_blk->sense_len;
2067 memcpy(scmd->sense_buffer, cmd_blk->sense, sense_len);
2068 }
2069 dma_pool_free(cs->sense_pool, cmd_blk->sense,
2070 cmd_blk->sense_addr);
2071 cmd_blk->sense = NULL;
2072 cmd_blk->sense_addr = 0;
2073 }
2074 if (cmd_blk->dcdb) {
2075 dma_pool_free(cs->dcdb_pool, cmd_blk->dcdb,
2076 cmd_blk->dcdb_dma);
2077 cmd_blk->dcdb = NULL;
2078 cmd_blk->dcdb_dma = 0;
2079 }
2080 if (cmd_blk->sgl) {
2081 dma_pool_free(cs->sg_pool, cmd_blk->sgl,
2082 cmd_blk->sgl_addr);
2083 cmd_blk->sgl = NULL;
2084 cmd_blk->sgl_addr = 0;
2085 }
2086 if (cmd_blk->residual)
2087 scsi_set_resid(scmd, cmd_blk->residual);
2088 if (status == MYRS_STATUS_DEVICE_NON_RESPONSIVE ||
2089 status == MYRS_STATUS_DEVICE_NON_RESPONSIVE2)
2090 scmd->result = (DID_BAD_TARGET << 16);
2091 else
2092 scmd->result = (DID_OK << 16) | status;
2093 scmd->scsi_done(scmd);
2094 }
2095
2096 static void myrs_handle_cmdblk(struct myrs_hba *cs, struct myrs_cmdblk *cmd_blk)
2097 {
2098 if (!cmd_blk)
2099 return;
2100
2101 if (cmd_blk->complete) {
2102 complete(cmd_blk->complete);
2103 cmd_blk->complete = NULL;
2104 }
2105 }
2106
2107 static void myrs_monitor(struct work_struct *work)
2108 {
2109 struct myrs_hba *cs = container_of(work, struct myrs_hba,
2110 monitor_work.work);
2111 struct Scsi_Host *shost = cs->host;
2112 struct myrs_ctlr_info *info = cs->ctlr_info;
2113 unsigned int epoch = cs->fwstat_buf->epoch;
2114 unsigned long interval = MYRS_PRIMARY_MONITOR_INTERVAL;
2115 unsigned char status;
2116
2117 dev_dbg(&shost->shost_gendev, "monitor tick\n");
2118
2119 status = myrs_get_fwstatus(cs);
2120
2121 if (cs->needs_update) {
2122 cs->needs_update = false;
2123 mutex_lock(&cs->cinfo_mutex);
2124 status = myrs_get_ctlr_info(cs);
2125 mutex_unlock(&cs->cinfo_mutex);
2126 }
2127 if (cs->fwstat_buf->next_evseq - cs->next_evseq > 0) {
2128 status = myrs_get_event(cs, cs->next_evseq,
2129 cs->event_buf);
2130 if (status == MYRS_STATUS_SUCCESS) {
2131 myrs_log_event(cs, cs->event_buf);
2132 cs->next_evseq++;
2133 interval = 1;
2134 }
2135 }
2136
2137 if (time_after(jiffies, cs->secondary_monitor_time
2138 + MYRS_SECONDARY_MONITOR_INTERVAL))
2139 cs->secondary_monitor_time = jiffies;
2140
2141 if (info->bg_init_active +
2142 info->ldev_init_active +
2143 info->pdev_init_active +
2144 info->cc_active +
2145 info->rbld_active +
2146 info->exp_active != 0) {
2147 struct scsi_device *sdev;
2148
2149 shost_for_each_device(sdev, shost) {
2150 struct myrs_ldev_info *ldev_info;
2151 int ldev_num;
2152
2153 if (sdev->channel < info->physchan_present)
2154 continue;
2155 ldev_info = sdev->hostdata;
2156 if (!ldev_info)
2157 continue;
2158 ldev_num = ldev_info->ldev_num;
2159 myrs_get_ldev_info(cs, ldev_num, ldev_info);
2160 }
2161 cs->needs_update = true;
2162 }
2163 if (epoch == cs->epoch &&
2164 cs->fwstat_buf->next_evseq == cs->next_evseq &&
2165 (cs->needs_update == false ||
2166 time_before(jiffies, cs->primary_monitor_time
2167 + MYRS_PRIMARY_MONITOR_INTERVAL))) {
2168 interval = MYRS_SECONDARY_MONITOR_INTERVAL;
2169 }
2170
2171 if (interval > 1)
2172 cs->primary_monitor_time = jiffies;
2173 queue_delayed_work(cs->work_q, &cs->monitor_work, interval);
2174 }
2175
2176 static bool myrs_create_mempools(struct pci_dev *pdev, struct myrs_hba *cs)
2177 {
2178 struct Scsi_Host *shost = cs->host;
2179 size_t elem_size, elem_align;
2180
2181 elem_align = sizeof(struct myrs_sge);
2182 elem_size = shost->sg_tablesize * elem_align;
2183 cs->sg_pool = dma_pool_create("myrs_sg", &pdev->dev,
2184 elem_size, elem_align, 0);
2185 if (cs->sg_pool == NULL) {
2186 shost_printk(KERN_ERR, shost,
2187 "Failed to allocate SG pool\n");
2188 return false;
2189 }
2190
2191 cs->sense_pool = dma_pool_create("myrs_sense", &pdev->dev,
2192 MYRS_SENSE_SIZE, sizeof(int), 0);
2193 if (cs->sense_pool == NULL) {
2194 dma_pool_destroy(cs->sg_pool);
2195 cs->sg_pool = NULL;
2196 shost_printk(KERN_ERR, shost,
2197 "Failed to allocate sense data pool\n");
2198 return false;
2199 }
2200
2201 cs->dcdb_pool = dma_pool_create("myrs_dcdb", &pdev->dev,
2202 MYRS_DCDB_SIZE,
2203 sizeof(unsigned char), 0);
2204 if (!cs->dcdb_pool) {
2205 dma_pool_destroy(cs->sg_pool);
2206 cs->sg_pool = NULL;
2207 dma_pool_destroy(cs->sense_pool);
2208 cs->sense_pool = NULL;
2209 shost_printk(KERN_ERR, shost,
2210 "Failed to allocate DCDB pool\n");
2211 return false;
2212 }
2213
2214 snprintf(cs->work_q_name, sizeof(cs->work_q_name),
2215 "myrs_wq_%d", shost->host_no);
2216 cs->work_q = create_singlethread_workqueue(cs->work_q_name);
2217 if (!cs->work_q) {
2218 dma_pool_destroy(cs->dcdb_pool);
2219 cs->dcdb_pool = NULL;
2220 dma_pool_destroy(cs->sg_pool);
2221 cs->sg_pool = NULL;
2222 dma_pool_destroy(cs->sense_pool);
2223 cs->sense_pool = NULL;
2224 shost_printk(KERN_ERR, shost,
2225 "Failed to create workqueue\n");
2226 return false;
2227 }
2228
2229 /* Initialize the Monitoring Timer. */
2230 INIT_DELAYED_WORK(&cs->monitor_work, myrs_monitor);
2231 queue_delayed_work(cs->work_q, &cs->monitor_work, 1);
2232
2233 return true;
2234 }
2235
2236 static void myrs_destroy_mempools(struct myrs_hba *cs)
2237 {
2238 cancel_delayed_work_sync(&cs->monitor_work);
2239 destroy_workqueue(cs->work_q);
2240
2241 dma_pool_destroy(cs->sg_pool);
2242 dma_pool_destroy(cs->dcdb_pool);
2243 dma_pool_destroy(cs->sense_pool);
2244 }
2245
2246 static void myrs_unmap(struct myrs_hba *cs)
2247 {
2248 kfree(cs->event_buf);
2249 kfree(cs->ctlr_info);
2250 if (cs->fwstat_buf) {
2251 dma_free_coherent(&cs->pdev->dev, sizeof(struct myrs_fwstat),
2252 cs->fwstat_buf, cs->fwstat_addr);
2253 cs->fwstat_buf = NULL;
2254 }
2255 if (cs->first_stat_mbox) {
2256 dma_free_coherent(&cs->pdev->dev, cs->stat_mbox_size,
2257 cs->first_stat_mbox, cs->stat_mbox_addr);
2258 cs->first_stat_mbox = NULL;
2259 }
2260 if (cs->first_cmd_mbox) {
2261 dma_free_coherent(&cs->pdev->dev, cs->cmd_mbox_size,
2262 cs->first_cmd_mbox, cs->cmd_mbox_addr);
2263 cs->first_cmd_mbox = NULL;
2264 }
2265 }
2266
2267 static void myrs_cleanup(struct myrs_hba *cs)
2268 {
2269 struct pci_dev *pdev = cs->pdev;
2270
2271 /* Free the memory mailbox, status, and related structures */
2272 myrs_unmap(cs);
2273
2274 if (cs->mmio_base) {
2275 cs->disable_intr(cs);
2276 iounmap(cs->mmio_base);
2277 }
2278 if (cs->irq)
2279 free_irq(cs->irq, cs);
2280 if (cs->io_addr)
2281 release_region(cs->io_addr, 0x80);
2282 iounmap(cs->mmio_base);
2283 pci_set_drvdata(pdev, NULL);
2284 pci_disable_device(pdev);
2285 scsi_host_put(cs->host);
2286 }
2287
2288 static struct myrs_hba *myrs_detect(struct pci_dev *pdev,
2289 const struct pci_device_id *entry)
2290 {
2291 struct myrs_privdata *privdata =
2292 (struct myrs_privdata *)entry->driver_data;
2293 irq_handler_t irq_handler = privdata->irq_handler;
2294 unsigned int mmio_size = privdata->mmio_size;
2295 struct myrs_hba *cs = NULL;
2296
2297 cs = myrs_alloc_host(pdev, entry);
2298 if (!cs) {
2299 dev_err(&pdev->dev, "Unable to allocate Controller\n");
2300 return NULL;
2301 }
2302 cs->pdev = pdev;
2303
2304 if (pci_enable_device(pdev))
2305 goto Failure;
2306
2307 cs->pci_addr = pci_resource_start(pdev, 0);
2308
2309 pci_set_drvdata(pdev, cs);
2310 spin_lock_init(&cs->queue_lock);
2311 /* Map the Controller Register Window. */
2312 if (mmio_size < PAGE_SIZE)
2313 mmio_size = PAGE_SIZE;
2314 cs->mmio_base = ioremap(cs->pci_addr & PAGE_MASK, mmio_size);
2315 if (cs->mmio_base == NULL) {
2316 dev_err(&pdev->dev,
2317 "Unable to map Controller Register Window\n");
2318 goto Failure;
2319 }
2320
2321 cs->io_base = cs->mmio_base + (cs->pci_addr & ~PAGE_MASK);
2322 if (privdata->hw_init(pdev, cs, cs->io_base))
2323 goto Failure;
2324
2325 /* Acquire shared access to the IRQ Channel. */
2326 if (request_irq(pdev->irq, irq_handler, IRQF_SHARED, "myrs", cs) < 0) {
2327 dev_err(&pdev->dev,
2328 "Unable to acquire IRQ Channel %d\n", pdev->irq);
2329 goto Failure;
2330 }
2331 cs->irq = pdev->irq;
2332 return cs;
2333
2334 Failure:
2335 dev_err(&pdev->dev,
2336 "Failed to initialize Controller\n");
2337 myrs_cleanup(cs);
2338 return NULL;
2339 }
2340
2341 /**
2342 * myrs_err_status reports Controller BIOS Messages passed through
2343 the Error Status Register when the driver performs the BIOS handshaking.
2344 It returns true for fatal errors and false otherwise.
2345 */
2346
2347 static bool myrs_err_status(struct myrs_hba *cs, unsigned char status,
2348 unsigned char parm0, unsigned char parm1)
2349 {
2350 struct pci_dev *pdev = cs->pdev;
2351
2352 switch (status) {
2353 case 0x00:
2354 dev_info(&pdev->dev,
2355 "Physical Device %d:%d Not Responding\n",
2356 parm1, parm0);
2357 break;
2358 case 0x08:
2359 dev_notice(&pdev->dev, "Spinning Up Drives\n");
2360 break;
2361 case 0x30:
2362 dev_notice(&pdev->dev, "Configuration Checksum Error\n");
2363 break;
2364 case 0x60:
2365 dev_notice(&pdev->dev, "Mirror Race Recovery Failed\n");
2366 break;
2367 case 0x70:
2368 dev_notice(&pdev->dev, "Mirror Race Recovery In Progress\n");
2369 break;
2370 case 0x90:
2371 dev_notice(&pdev->dev, "Physical Device %d:%d COD Mismatch\n",
2372 parm1, parm0);
2373 break;
2374 case 0xA0:
2375 dev_notice(&pdev->dev, "Logical Drive Installation Aborted\n");
2376 break;
2377 case 0xB0:
2378 dev_notice(&pdev->dev, "Mirror Race On A Critical Logical Drive\n");
2379 break;
2380 case 0xD0:
2381 dev_notice(&pdev->dev, "New Controller Configuration Found\n");
2382 break;
2383 case 0xF0:
2384 dev_err(&pdev->dev, "Fatal Memory Parity Error\n");
2385 return true;
2386 default:
2387 dev_err(&pdev->dev, "Unknown Initialization Error %02X\n",
2388 status);
2389 return true;
2390 }
2391 return false;
2392 }
2393
2394 /*
2395 * Hardware-specific functions
2396 */
2397
2398 /*
2399 * DAC960 GEM Series Controllers.
2400 */
2401
2402 static inline void DAC960_GEM_hw_mbox_new_cmd(void __iomem *base)
2403 {
2404 __le32 val = cpu_to_le32(DAC960_GEM_IDB_HWMBOX_NEW_CMD << 24);
2405
2406 writel(val, base + DAC960_GEM_IDB_READ_OFFSET);
2407 }
2408
2409 static inline void DAC960_GEM_ack_hw_mbox_status(void __iomem *base)
2410 {
2411 __le32 val = cpu_to_le32(DAC960_GEM_IDB_HWMBOX_ACK_STS << 24);
2412
2413 writel(val, base + DAC960_GEM_IDB_CLEAR_OFFSET);
2414 }
2415
2416 static inline void DAC960_GEM_gen_intr(void __iomem *base)
2417 {
2418 __le32 val = cpu_to_le32(DAC960_GEM_IDB_GEN_IRQ << 24);
2419
2420 writel(val, base + DAC960_GEM_IDB_READ_OFFSET);
2421 }
2422
2423 static inline void DAC960_GEM_reset_ctrl(void __iomem *base)
2424 {
2425 __le32 val = cpu_to_le32(DAC960_GEM_IDB_CTRL_RESET << 24);
2426
2427 writel(val, base + DAC960_GEM_IDB_READ_OFFSET);
2428 }
2429
2430 static inline void DAC960_GEM_mem_mbox_new_cmd(void __iomem *base)
2431 {
2432 __le32 val = cpu_to_le32(DAC960_GEM_IDB_HWMBOX_NEW_CMD << 24);
2433
2434 writel(val, base + DAC960_GEM_IDB_READ_OFFSET);
2435 }
2436
2437 static inline bool DAC960_GEM_hw_mbox_is_full(void __iomem *base)
2438 {
2439 __le32 val;
2440
2441 val = readl(base + DAC960_GEM_IDB_READ_OFFSET);
2442 return (le32_to_cpu(val) >> 24) & DAC960_GEM_IDB_HWMBOX_FULL;
2443 }
2444
2445 static inline bool DAC960_GEM_init_in_progress(void __iomem *base)
2446 {
2447 __le32 val;
2448
2449 val = readl(base + DAC960_GEM_IDB_READ_OFFSET);
2450 return (le32_to_cpu(val) >> 24) & DAC960_GEM_IDB_INIT_IN_PROGRESS;
2451 }
2452
2453 static inline void DAC960_GEM_ack_hw_mbox_intr(void __iomem *base)
2454 {
2455 __le32 val = cpu_to_le32(DAC960_GEM_ODB_HWMBOX_ACK_IRQ << 24);
2456
2457 writel(val, base + DAC960_GEM_ODB_CLEAR_OFFSET);
2458 }
2459
2460 static inline void DAC960_GEM_ack_mem_mbox_intr(void __iomem *base)
2461 {
2462 __le32 val = cpu_to_le32(DAC960_GEM_ODB_MMBOX_ACK_IRQ << 24);
2463
2464 writel(val, base + DAC960_GEM_ODB_CLEAR_OFFSET);
2465 }
2466
2467 static inline void DAC960_GEM_ack_intr(void __iomem *base)
2468 {
2469 __le32 val = cpu_to_le32((DAC960_GEM_ODB_HWMBOX_ACK_IRQ |
2470 DAC960_GEM_ODB_MMBOX_ACK_IRQ) << 24);
2471
2472 writel(val, base + DAC960_GEM_ODB_CLEAR_OFFSET);
2473 }
2474
2475 static inline bool DAC960_GEM_hw_mbox_status_available(void __iomem *base)
2476 {
2477 __le32 val;
2478
2479 val = readl(base + DAC960_GEM_ODB_READ_OFFSET);
2480 return (le32_to_cpu(val) >> 24) & DAC960_GEM_ODB_HWMBOX_STS_AVAIL;
2481 }
2482
2483 static inline bool DAC960_GEM_mem_mbox_status_available(void __iomem *base)
2484 {
2485 __le32 val;
2486
2487 val = readl(base + DAC960_GEM_ODB_READ_OFFSET);
2488 return (le32_to_cpu(val) >> 24) & DAC960_GEM_ODB_MMBOX_STS_AVAIL;
2489 }
2490
2491 static inline void DAC960_GEM_enable_intr(void __iomem *base)
2492 {
2493 __le32 val = cpu_to_le32((DAC960_GEM_IRQMASK_HWMBOX_IRQ |
2494 DAC960_GEM_IRQMASK_MMBOX_IRQ) << 24);
2495 writel(val, base + DAC960_GEM_IRQMASK_CLEAR_OFFSET);
2496 }
2497
2498 static inline void DAC960_GEM_disable_intr(void __iomem *base)
2499 {
2500 __le32 val = 0;
2501
2502 writel(val, base + DAC960_GEM_IRQMASK_READ_OFFSET);
2503 }
2504
2505 static inline bool DAC960_GEM_intr_enabled(void __iomem *base)
2506 {
2507 __le32 val;
2508
2509 val = readl(base + DAC960_GEM_IRQMASK_READ_OFFSET);
2510 return !((le32_to_cpu(val) >> 24) &
2511 (DAC960_GEM_IRQMASK_HWMBOX_IRQ |
2512 DAC960_GEM_IRQMASK_MMBOX_IRQ));
2513 }
2514
2515 static inline void DAC960_GEM_write_cmd_mbox(union myrs_cmd_mbox *mem_mbox,
2516 union myrs_cmd_mbox *mbox)
2517 {
2518 memcpy(&mem_mbox->words[1], &mbox->words[1],
2519 sizeof(union myrs_cmd_mbox) - sizeof(unsigned int));
2520 /* Barrier to avoid reordering */
2521 wmb();
2522 mem_mbox->words[0] = mbox->words[0];
2523 /* Barrier to force PCI access */
2524 mb();
2525 }
2526
2527 static inline void DAC960_GEM_write_hw_mbox(void __iomem *base,
2528 dma_addr_t cmd_mbox_addr)
2529 {
2530 dma_addr_writeql(cmd_mbox_addr, base + DAC960_GEM_CMDMBX_OFFSET);
2531 }
2532
2533 static inline unsigned short DAC960_GEM_read_cmd_ident(void __iomem *base)
2534 {
2535 return readw(base + DAC960_GEM_CMDSTS_OFFSET);
2536 }
2537
2538 static inline unsigned char DAC960_GEM_read_cmd_status(void __iomem *base)
2539 {
2540 return readw(base + DAC960_GEM_CMDSTS_OFFSET + 2);
2541 }
2542
2543 static inline bool
2544 DAC960_GEM_read_error_status(void __iomem *base, unsigned char *error,
2545 unsigned char *param0, unsigned char *param1)
2546 {
2547 __le32 val;
2548
2549 val = readl(base + DAC960_GEM_ERRSTS_READ_OFFSET);
2550 if (!((le32_to_cpu(val) >> 24) & DAC960_GEM_ERRSTS_PENDING))
2551 return false;
2552 *error = val & ~(DAC960_GEM_ERRSTS_PENDING << 24);
2553 *param0 = readb(base + DAC960_GEM_CMDMBX_OFFSET + 0);
2554 *param1 = readb(base + DAC960_GEM_CMDMBX_OFFSET + 1);
2555 writel(0x03000000, base + DAC960_GEM_ERRSTS_CLEAR_OFFSET);
2556 return true;
2557 }
2558
2559 static inline unsigned char
2560 DAC960_GEM_mbox_init(void __iomem *base, dma_addr_t mbox_addr)
2561 {
2562 unsigned char status;
2563
2564 while (DAC960_GEM_hw_mbox_is_full(base))
2565 udelay(1);
2566 DAC960_GEM_write_hw_mbox(base, mbox_addr);
2567 DAC960_GEM_hw_mbox_new_cmd(base);
2568 while (!DAC960_GEM_hw_mbox_status_available(base))
2569 udelay(1);
2570 status = DAC960_GEM_read_cmd_status(base);
2571 DAC960_GEM_ack_hw_mbox_intr(base);
2572 DAC960_GEM_ack_hw_mbox_status(base);
2573
2574 return status;
2575 }
2576
2577 static int DAC960_GEM_hw_init(struct pci_dev *pdev,
2578 struct myrs_hba *cs, void __iomem *base)
2579 {
2580 int timeout = 0;
2581 unsigned char status, parm0, parm1;
2582
2583 DAC960_GEM_disable_intr(base);
2584 DAC960_GEM_ack_hw_mbox_status(base);
2585 udelay(1000);
2586 while (DAC960_GEM_init_in_progress(base) &&
2587 timeout < MYRS_MAILBOX_TIMEOUT) {
2588 if (DAC960_GEM_read_error_status(base, &status,
2589 &parm0, &parm1) &&
2590 myrs_err_status(cs, status, parm0, parm1))
2591 return -EIO;
2592 udelay(10);
2593 timeout++;
2594 }
2595 if (timeout == MYRS_MAILBOX_TIMEOUT) {
2596 dev_err(&pdev->dev,
2597 "Timeout waiting for Controller Initialisation\n");
2598 return -ETIMEDOUT;
2599 }
2600 if (!myrs_enable_mmio_mbox(cs, DAC960_GEM_mbox_init)) {
2601 dev_err(&pdev->dev,
2602 "Unable to Enable Memory Mailbox Interface\n");
2603 DAC960_GEM_reset_ctrl(base);
2604 return -EAGAIN;
2605 }
2606 DAC960_GEM_enable_intr(base);
2607 cs->write_cmd_mbox = DAC960_GEM_write_cmd_mbox;
2608 cs->get_cmd_mbox = DAC960_GEM_mem_mbox_new_cmd;
2609 cs->disable_intr = DAC960_GEM_disable_intr;
2610 cs->reset = DAC960_GEM_reset_ctrl;
2611 return 0;
2612 }
2613
2614 static irqreturn_t DAC960_GEM_intr_handler(int irq, void *arg)
2615 {
2616 struct myrs_hba *cs = arg;
2617 void __iomem *base = cs->io_base;
2618 struct myrs_stat_mbox *next_stat_mbox;
2619 unsigned long flags;
2620
2621 spin_lock_irqsave(&cs->queue_lock, flags);
2622 DAC960_GEM_ack_intr(base);
2623 next_stat_mbox = cs->next_stat_mbox;
2624 while (next_stat_mbox->id > 0) {
2625 unsigned short id = next_stat_mbox->id;
2626 struct scsi_cmnd *scmd = NULL;
2627 struct myrs_cmdblk *cmd_blk = NULL;
2628
2629 if (id == MYRS_DCMD_TAG)
2630 cmd_blk = &cs->dcmd_blk;
2631 else if (id == MYRS_MCMD_TAG)
2632 cmd_blk = &cs->mcmd_blk;
2633 else {
2634 scmd = scsi_host_find_tag(cs->host, id - 3);
2635 if (scmd)
2636 cmd_blk = scsi_cmd_priv(scmd);
2637 }
2638 if (cmd_blk) {
2639 cmd_blk->status = next_stat_mbox->status;
2640 cmd_blk->sense_len = next_stat_mbox->sense_len;
2641 cmd_blk->residual = next_stat_mbox->residual;
2642 } else
2643 dev_err(&cs->pdev->dev,
2644 "Unhandled command completion %d\n", id);
2645
2646 memset(next_stat_mbox, 0, sizeof(struct myrs_stat_mbox));
2647 if (++next_stat_mbox > cs->last_stat_mbox)
2648 next_stat_mbox = cs->first_stat_mbox;
2649
2650 if (cmd_blk) {
2651 if (id < 3)
2652 myrs_handle_cmdblk(cs, cmd_blk);
2653 else
2654 myrs_handle_scsi(cs, cmd_blk, scmd);
2655 }
2656 }
2657 cs->next_stat_mbox = next_stat_mbox;
2658 spin_unlock_irqrestore(&cs->queue_lock, flags);
2659 return IRQ_HANDLED;
2660 }
2661
2662 struct myrs_privdata DAC960_GEM_privdata = {
2663 .hw_init = DAC960_GEM_hw_init,
2664 .irq_handler = DAC960_GEM_intr_handler,
2665 .mmio_size = DAC960_GEM_mmio_size,
2666 };
2667
2668 /*
2669 * DAC960 BA Series Controllers.
2670 */
2671
2672 static inline void DAC960_BA_hw_mbox_new_cmd(void __iomem *base)
2673 {
2674 writeb(DAC960_BA_IDB_HWMBOX_NEW_CMD, base + DAC960_BA_IDB_OFFSET);
2675 }
2676
2677 static inline void DAC960_BA_ack_hw_mbox_status(void __iomem *base)
2678 {
2679 writeb(DAC960_BA_IDB_HWMBOX_ACK_STS, base + DAC960_BA_IDB_OFFSET);
2680 }
2681
2682 static inline void DAC960_BA_gen_intr(void __iomem *base)
2683 {
2684 writeb(DAC960_BA_IDB_GEN_IRQ, base + DAC960_BA_IDB_OFFSET);
2685 }
2686
2687 static inline void DAC960_BA_reset_ctrl(void __iomem *base)
2688 {
2689 writeb(DAC960_BA_IDB_CTRL_RESET, base + DAC960_BA_IDB_OFFSET);
2690 }
2691
2692 static inline void DAC960_BA_mem_mbox_new_cmd(void __iomem *base)
2693 {
2694 writeb(DAC960_BA_IDB_MMBOX_NEW_CMD, base + DAC960_BA_IDB_OFFSET);
2695 }
2696
2697 static inline bool DAC960_BA_hw_mbox_is_full(void __iomem *base)
2698 {
2699 u8 val;
2700
2701 val = readb(base + DAC960_BA_IDB_OFFSET);
2702 return !(val & DAC960_BA_IDB_HWMBOX_EMPTY);
2703 }
2704
2705 static inline bool DAC960_BA_init_in_progress(void __iomem *base)
2706 {
2707 u8 val;
2708
2709 val = readb(base + DAC960_BA_IDB_OFFSET);
2710 return !(val & DAC960_BA_IDB_INIT_DONE);
2711 }
2712
2713 static inline void DAC960_BA_ack_hw_mbox_intr(void __iomem *base)
2714 {
2715 writeb(DAC960_BA_ODB_HWMBOX_ACK_IRQ, base + DAC960_BA_ODB_OFFSET);
2716 }
2717
2718 static inline void DAC960_BA_ack_mem_mbox_intr(void __iomem *base)
2719 {
2720 writeb(DAC960_BA_ODB_MMBOX_ACK_IRQ, base + DAC960_BA_ODB_OFFSET);
2721 }
2722
2723 static inline void DAC960_BA_ack_intr(void __iomem *base)
2724 {
2725 writeb(DAC960_BA_ODB_HWMBOX_ACK_IRQ | DAC960_BA_ODB_MMBOX_ACK_IRQ,
2726 base + DAC960_BA_ODB_OFFSET);
2727 }
2728
2729 static inline bool DAC960_BA_hw_mbox_status_available(void __iomem *base)
2730 {
2731 u8 val;
2732
2733 val = readb(base + DAC960_BA_ODB_OFFSET);
2734 return val & DAC960_BA_ODB_HWMBOX_STS_AVAIL;
2735 }
2736
2737 static inline bool DAC960_BA_mem_mbox_status_available(void __iomem *base)
2738 {
2739 u8 val;
2740
2741 val = readb(base + DAC960_BA_ODB_OFFSET);
2742 return val & DAC960_BA_ODB_MMBOX_STS_AVAIL;
2743 }
2744
2745 static inline void DAC960_BA_enable_intr(void __iomem *base)
2746 {
2747 writeb(~DAC960_BA_IRQMASK_DISABLE_IRQ, base + DAC960_BA_IRQMASK_OFFSET);
2748 }
2749
2750 static inline void DAC960_BA_disable_intr(void __iomem *base)
2751 {
2752 writeb(0xFF, base + DAC960_BA_IRQMASK_OFFSET);
2753 }
2754
2755 static inline bool DAC960_BA_intr_enabled(void __iomem *base)
2756 {
2757 u8 val;
2758
2759 val = readb(base + DAC960_BA_IRQMASK_OFFSET);
2760 return !(val & DAC960_BA_IRQMASK_DISABLE_IRQ);
2761 }
2762
2763 static inline void DAC960_BA_write_cmd_mbox(union myrs_cmd_mbox *mem_mbox,
2764 union myrs_cmd_mbox *mbox)
2765 {
2766 memcpy(&mem_mbox->words[1], &mbox->words[1],
2767 sizeof(union myrs_cmd_mbox) - sizeof(unsigned int));
2768 /* Barrier to avoid reordering */
2769 wmb();
2770 mem_mbox->words[0] = mbox->words[0];
2771 /* Barrier to force PCI access */
2772 mb();
2773 }
2774
2775
2776 static inline void DAC960_BA_write_hw_mbox(void __iomem *base,
2777 dma_addr_t cmd_mbox_addr)
2778 {
2779 dma_addr_writeql(cmd_mbox_addr, base + DAC960_BA_CMDMBX_OFFSET);
2780 }
2781
2782 static inline unsigned short DAC960_BA_read_cmd_ident(void __iomem *base)
2783 {
2784 return readw(base + DAC960_BA_CMDSTS_OFFSET);
2785 }
2786
2787 static inline unsigned char DAC960_BA_read_cmd_status(void __iomem *base)
2788 {
2789 return readw(base + DAC960_BA_CMDSTS_OFFSET + 2);
2790 }
2791
2792 static inline bool
2793 DAC960_BA_read_error_status(void __iomem *base, unsigned char *error,
2794 unsigned char *param0, unsigned char *param1)
2795 {
2796 u8 val;
2797
2798 val = readb(base + DAC960_BA_ERRSTS_OFFSET);
2799 if (!(val & DAC960_BA_ERRSTS_PENDING))
2800 return false;
2801 val &= ~DAC960_BA_ERRSTS_PENDING;
2802 *error = val;
2803 *param0 = readb(base + DAC960_BA_CMDMBX_OFFSET + 0);
2804 *param1 = readb(base + DAC960_BA_CMDMBX_OFFSET + 1);
2805 writeb(0xFF, base + DAC960_BA_ERRSTS_OFFSET);
2806 return true;
2807 }
2808
2809 static inline unsigned char
2810 DAC960_BA_mbox_init(void __iomem *base, dma_addr_t mbox_addr)
2811 {
2812 unsigned char status;
2813
2814 while (DAC960_BA_hw_mbox_is_full(base))
2815 udelay(1);
2816 DAC960_BA_write_hw_mbox(base, mbox_addr);
2817 DAC960_BA_hw_mbox_new_cmd(base);
2818 while (!DAC960_BA_hw_mbox_status_available(base))
2819 udelay(1);
2820 status = DAC960_BA_read_cmd_status(base);
2821 DAC960_BA_ack_hw_mbox_intr(base);
2822 DAC960_BA_ack_hw_mbox_status(base);
2823
2824 return status;
2825 }
2826
2827 static int DAC960_BA_hw_init(struct pci_dev *pdev,
2828 struct myrs_hba *cs, void __iomem *base)
2829 {
2830 int timeout = 0;
2831 unsigned char status, parm0, parm1;
2832
2833 DAC960_BA_disable_intr(base);
2834 DAC960_BA_ack_hw_mbox_status(base);
2835 udelay(1000);
2836 while (DAC960_BA_init_in_progress(base) &&
2837 timeout < MYRS_MAILBOX_TIMEOUT) {
2838 if (DAC960_BA_read_error_status(base, &status,
2839 &parm0, &parm1) &&
2840 myrs_err_status(cs, status, parm0, parm1))
2841 return -EIO;
2842 udelay(10);
2843 timeout++;
2844 }
2845 if (timeout == MYRS_MAILBOX_TIMEOUT) {
2846 dev_err(&pdev->dev,
2847 "Timeout waiting for Controller Initialisation\n");
2848 return -ETIMEDOUT;
2849 }
2850 if (!myrs_enable_mmio_mbox(cs, DAC960_BA_mbox_init)) {
2851 dev_err(&pdev->dev,
2852 "Unable to Enable Memory Mailbox Interface\n");
2853 DAC960_BA_reset_ctrl(base);
2854 return -EAGAIN;
2855 }
2856 DAC960_BA_enable_intr(base);
2857 cs->write_cmd_mbox = DAC960_BA_write_cmd_mbox;
2858 cs->get_cmd_mbox = DAC960_BA_mem_mbox_new_cmd;
2859 cs->disable_intr = DAC960_BA_disable_intr;
2860 cs->reset = DAC960_BA_reset_ctrl;
2861 return 0;
2862 }
2863
2864 static irqreturn_t DAC960_BA_intr_handler(int irq, void *arg)
2865 {
2866 struct myrs_hba *cs = arg;
2867 void __iomem *base = cs->io_base;
2868 struct myrs_stat_mbox *next_stat_mbox;
2869 unsigned long flags;
2870
2871 spin_lock_irqsave(&cs->queue_lock, flags);
2872 DAC960_BA_ack_intr(base);
2873 next_stat_mbox = cs->next_stat_mbox;
2874 while (next_stat_mbox->id > 0) {
2875 unsigned short id = next_stat_mbox->id;
2876 struct scsi_cmnd *scmd = NULL;
2877 struct myrs_cmdblk *cmd_blk = NULL;
2878
2879 if (id == MYRS_DCMD_TAG)
2880 cmd_blk = &cs->dcmd_blk;
2881 else if (id == MYRS_MCMD_TAG)
2882 cmd_blk = &cs->mcmd_blk;
2883 else {
2884 scmd = scsi_host_find_tag(cs->host, id - 3);
2885 if (scmd)
2886 cmd_blk = scsi_cmd_priv(scmd);
2887 }
2888 if (cmd_blk) {
2889 cmd_blk->status = next_stat_mbox->status;
2890 cmd_blk->sense_len = next_stat_mbox->sense_len;
2891 cmd_blk->residual = next_stat_mbox->residual;
2892 } else
2893 dev_err(&cs->pdev->dev,
2894 "Unhandled command completion %d\n", id);
2895
2896 memset(next_stat_mbox, 0, sizeof(struct myrs_stat_mbox));
2897 if (++next_stat_mbox > cs->last_stat_mbox)
2898 next_stat_mbox = cs->first_stat_mbox;
2899
2900 if (cmd_blk) {
2901 if (id < 3)
2902 myrs_handle_cmdblk(cs, cmd_blk);
2903 else
2904 myrs_handle_scsi(cs, cmd_blk, scmd);
2905 }
2906 }
2907 cs->next_stat_mbox = next_stat_mbox;
2908 spin_unlock_irqrestore(&cs->queue_lock, flags);
2909 return IRQ_HANDLED;
2910 }
2911
2912 struct myrs_privdata DAC960_BA_privdata = {
2913 .hw_init = DAC960_BA_hw_init,
2914 .irq_handler = DAC960_BA_intr_handler,
2915 .mmio_size = DAC960_BA_mmio_size,
2916 };
2917
2918 /*
2919 * DAC960 LP Series Controllers.
2920 */
2921
2922 static inline void DAC960_LP_hw_mbox_new_cmd(void __iomem *base)
2923 {
2924 writeb(DAC960_LP_IDB_HWMBOX_NEW_CMD, base + DAC960_LP_IDB_OFFSET);
2925 }
2926
2927 static inline void DAC960_LP_ack_hw_mbox_status(void __iomem *base)
2928 {
2929 writeb(DAC960_LP_IDB_HWMBOX_ACK_STS, base + DAC960_LP_IDB_OFFSET);
2930 }
2931
2932 static inline void DAC960_LP_gen_intr(void __iomem *base)
2933 {
2934 writeb(DAC960_LP_IDB_GEN_IRQ, base + DAC960_LP_IDB_OFFSET);
2935 }
2936
2937 static inline void DAC960_LP_reset_ctrl(void __iomem *base)
2938 {
2939 writeb(DAC960_LP_IDB_CTRL_RESET, base + DAC960_LP_IDB_OFFSET);
2940 }
2941
2942 static inline void DAC960_LP_mem_mbox_new_cmd(void __iomem *base)
2943 {
2944 writeb(DAC960_LP_IDB_MMBOX_NEW_CMD, base + DAC960_LP_IDB_OFFSET);
2945 }
2946
2947 static inline bool DAC960_LP_hw_mbox_is_full(void __iomem *base)
2948 {
2949 u8 val;
2950
2951 val = readb(base + DAC960_LP_IDB_OFFSET);
2952 return val & DAC960_LP_IDB_HWMBOX_FULL;
2953 }
2954
2955 static inline bool DAC960_LP_init_in_progress(void __iomem *base)
2956 {
2957 u8 val;
2958
2959 val = readb(base + DAC960_LP_IDB_OFFSET);
2960 return val & DAC960_LP_IDB_INIT_IN_PROGRESS;
2961 }
2962
2963 static inline void DAC960_LP_ack_hw_mbox_intr(void __iomem *base)
2964 {
2965 writeb(DAC960_LP_ODB_HWMBOX_ACK_IRQ, base + DAC960_LP_ODB_OFFSET);
2966 }
2967
2968 static inline void DAC960_LP_ack_mem_mbox_intr(void __iomem *base)
2969 {
2970 writeb(DAC960_LP_ODB_MMBOX_ACK_IRQ, base + DAC960_LP_ODB_OFFSET);
2971 }
2972
2973 static inline void DAC960_LP_ack_intr(void __iomem *base)
2974 {
2975 writeb(DAC960_LP_ODB_HWMBOX_ACK_IRQ | DAC960_LP_ODB_MMBOX_ACK_IRQ,
2976 base + DAC960_LP_ODB_OFFSET);
2977 }
2978
2979 static inline bool DAC960_LP_hw_mbox_status_available(void __iomem *base)
2980 {
2981 u8 val;
2982
2983 val = readb(base + DAC960_LP_ODB_OFFSET);
2984 return val & DAC960_LP_ODB_HWMBOX_STS_AVAIL;
2985 }
2986
2987 static inline bool DAC960_LP_mem_mbox_status_available(void __iomem *base)
2988 {
2989 u8 val;
2990
2991 val = readb(base + DAC960_LP_ODB_OFFSET);
2992 return val & DAC960_LP_ODB_MMBOX_STS_AVAIL;
2993 }
2994
2995 static inline void DAC960_LP_enable_intr(void __iomem *base)
2996 {
2997 writeb(~DAC960_LP_IRQMASK_DISABLE_IRQ, base + DAC960_LP_IRQMASK_OFFSET);
2998 }
2999
3000 static inline void DAC960_LP_disable_intr(void __iomem *base)
3001 {
3002 writeb(0xFF, base + DAC960_LP_IRQMASK_OFFSET);
3003 }
3004
3005 static inline bool DAC960_LP_intr_enabled(void __iomem *base)
3006 {
3007 u8 val;
3008
3009 val = readb(base + DAC960_LP_IRQMASK_OFFSET);
3010 return !(val & DAC960_LP_IRQMASK_DISABLE_IRQ);
3011 }
3012
3013 static inline void DAC960_LP_write_cmd_mbox(union myrs_cmd_mbox *mem_mbox,
3014 union myrs_cmd_mbox *mbox)
3015 {
3016 memcpy(&mem_mbox->words[1], &mbox->words[1],
3017 sizeof(union myrs_cmd_mbox) - sizeof(unsigned int));
3018 /* Barrier to avoid reordering */
3019 wmb();
3020 mem_mbox->words[0] = mbox->words[0];
3021 /* Barrier to force PCI access */
3022 mb();
3023 }
3024
3025 static inline void DAC960_LP_write_hw_mbox(void __iomem *base,
3026 dma_addr_t cmd_mbox_addr)
3027 {
3028 dma_addr_writeql(cmd_mbox_addr, base + DAC960_LP_CMDMBX_OFFSET);
3029 }
3030
3031 static inline unsigned short DAC960_LP_read_cmd_ident(void __iomem *base)
3032 {
3033 return readw(base + DAC960_LP_CMDSTS_OFFSET);
3034 }
3035
3036 static inline unsigned char DAC960_LP_read_cmd_status(void __iomem *base)
3037 {
3038 return readw(base + DAC960_LP_CMDSTS_OFFSET + 2);
3039 }
3040
3041 static inline bool
3042 DAC960_LP_read_error_status(void __iomem *base, unsigned char *error,
3043 unsigned char *param0, unsigned char *param1)
3044 {
3045 u8 val;
3046
3047 val = readb(base + DAC960_LP_ERRSTS_OFFSET);
3048 if (!(val & DAC960_LP_ERRSTS_PENDING))
3049 return false;
3050 val &= ~DAC960_LP_ERRSTS_PENDING;
3051 *error = val;
3052 *param0 = readb(base + DAC960_LP_CMDMBX_OFFSET + 0);
3053 *param1 = readb(base + DAC960_LP_CMDMBX_OFFSET + 1);
3054 writeb(0xFF, base + DAC960_LP_ERRSTS_OFFSET);
3055 return true;
3056 }
3057
3058 static inline unsigned char
3059 DAC960_LP_mbox_init(void __iomem *base, dma_addr_t mbox_addr)
3060 {
3061 unsigned char status;
3062
3063 while (DAC960_LP_hw_mbox_is_full(base))
3064 udelay(1);
3065 DAC960_LP_write_hw_mbox(base, mbox_addr);
3066 DAC960_LP_hw_mbox_new_cmd(base);
3067 while (!DAC960_LP_hw_mbox_status_available(base))
3068 udelay(1);
3069 status = DAC960_LP_read_cmd_status(base);
3070 DAC960_LP_ack_hw_mbox_intr(base);
3071 DAC960_LP_ack_hw_mbox_status(base);
3072
3073 return status;
3074 }
3075
3076 static int DAC960_LP_hw_init(struct pci_dev *pdev,
3077 struct myrs_hba *cs, void __iomem *base)
3078 {
3079 int timeout = 0;
3080 unsigned char status, parm0, parm1;
3081
3082 DAC960_LP_disable_intr(base);
3083 DAC960_LP_ack_hw_mbox_status(base);
3084 udelay(1000);
3085 while (DAC960_LP_init_in_progress(base) &&
3086 timeout < MYRS_MAILBOX_TIMEOUT) {
3087 if (DAC960_LP_read_error_status(base, &status,
3088 &parm0, &parm1) &&
3089 myrs_err_status(cs, status, parm0, parm1))
3090 return -EIO;
3091 udelay(10);
3092 timeout++;
3093 }
3094 if (timeout == MYRS_MAILBOX_TIMEOUT) {
3095 dev_err(&pdev->dev,
3096 "Timeout waiting for Controller Initialisation\n");
3097 return -ETIMEDOUT;
3098 }
3099 if (!myrs_enable_mmio_mbox(cs, DAC960_LP_mbox_init)) {
3100 dev_err(&pdev->dev,
3101 "Unable to Enable Memory Mailbox Interface\n");
3102 DAC960_LP_reset_ctrl(base);
3103 return -ENODEV;
3104 }
3105 DAC960_LP_enable_intr(base);
3106 cs->write_cmd_mbox = DAC960_LP_write_cmd_mbox;
3107 cs->get_cmd_mbox = DAC960_LP_mem_mbox_new_cmd;
3108 cs->disable_intr = DAC960_LP_disable_intr;
3109 cs->reset = DAC960_LP_reset_ctrl;
3110
3111 return 0;
3112 }
3113
3114 static irqreturn_t DAC960_LP_intr_handler(int irq, void *arg)
3115 {
3116 struct myrs_hba *cs = arg;
3117 void __iomem *base = cs->io_base;
3118 struct myrs_stat_mbox *next_stat_mbox;
3119 unsigned long flags;
3120
3121 spin_lock_irqsave(&cs->queue_lock, flags);
3122 DAC960_LP_ack_intr(base);
3123 next_stat_mbox = cs->next_stat_mbox;
3124 while (next_stat_mbox->id > 0) {
3125 unsigned short id = next_stat_mbox->id;
3126 struct scsi_cmnd *scmd = NULL;
3127 struct myrs_cmdblk *cmd_blk = NULL;
3128
3129 if (id == MYRS_DCMD_TAG)
3130 cmd_blk = &cs->dcmd_blk;
3131 else if (id == MYRS_MCMD_TAG)
3132 cmd_blk = &cs->mcmd_blk;
3133 else {
3134 scmd = scsi_host_find_tag(cs->host, id - 3);
3135 if (scmd)
3136 cmd_blk = scsi_cmd_priv(scmd);
3137 }
3138 if (cmd_blk) {
3139 cmd_blk->status = next_stat_mbox->status;
3140 cmd_blk->sense_len = next_stat_mbox->sense_len;
3141 cmd_blk->residual = next_stat_mbox->residual;
3142 } else
3143 dev_err(&cs->pdev->dev,
3144 "Unhandled command completion %d\n", id);
3145
3146 memset(next_stat_mbox, 0, sizeof(struct myrs_stat_mbox));
3147 if (++next_stat_mbox > cs->last_stat_mbox)
3148 next_stat_mbox = cs->first_stat_mbox;
3149
3150 if (cmd_blk) {
3151 if (id < 3)
3152 myrs_handle_cmdblk(cs, cmd_blk);
3153 else
3154 myrs_handle_scsi(cs, cmd_blk, scmd);
3155 }
3156 }
3157 cs->next_stat_mbox = next_stat_mbox;
3158 spin_unlock_irqrestore(&cs->queue_lock, flags);
3159 return IRQ_HANDLED;
3160 }
3161
3162 struct myrs_privdata DAC960_LP_privdata = {
3163 .hw_init = DAC960_LP_hw_init,
3164 .irq_handler = DAC960_LP_intr_handler,
3165 .mmio_size = DAC960_LP_mmio_size,
3166 };
3167
3168 /*
3169 * Module functions
3170 */
3171 static int
3172 myrs_probe(struct pci_dev *dev, const struct pci_device_id *entry)
3173 {
3174 struct myrs_hba *cs;
3175 int ret;
3176
3177 cs = myrs_detect(dev, entry);
3178 if (!cs)
3179 return -ENODEV;
3180
3181 ret = myrs_get_config(cs);
3182 if (ret < 0) {
3183 myrs_cleanup(cs);
3184 return ret;
3185 }
3186
3187 if (!myrs_create_mempools(dev, cs)) {
3188 ret = -ENOMEM;
3189 goto failed;
3190 }
3191
3192 ret = scsi_add_host(cs->host, &dev->dev);
3193 if (ret) {
3194 dev_err(&dev->dev, "scsi_add_host failed with %d\n", ret);
3195 myrs_destroy_mempools(cs);
3196 goto failed;
3197 }
3198 scsi_scan_host(cs->host);
3199 return 0;
3200 failed:
3201 myrs_cleanup(cs);
3202 return ret;
3203 }
3204
3205
3206 static void myrs_remove(struct pci_dev *pdev)
3207 {
3208 struct myrs_hba *cs = pci_get_drvdata(pdev);
3209
3210 if (cs == NULL)
3211 return;
3212
3213 shost_printk(KERN_NOTICE, cs->host, "Flushing Cache...");
3214 myrs_flush_cache(cs);
3215 myrs_destroy_mempools(cs);
3216 myrs_cleanup(cs);
3217 }
3218
3219
3220 static const struct pci_device_id myrs_id_table[] = {
3221 {
3222 PCI_DEVICE_SUB(PCI_VENDOR_ID_MYLEX,
3223 PCI_DEVICE_ID_MYLEX_DAC960_GEM,
3224 PCI_VENDOR_ID_MYLEX, PCI_ANY_ID),
3225 .driver_data = (unsigned long) &DAC960_GEM_privdata,
3226 },
3227 {
3228 PCI_DEVICE_DATA(MYLEX, DAC960_BA, &DAC960_BA_privdata),
3229 },
3230 {
3231 PCI_DEVICE_DATA(MYLEX, DAC960_LP, &DAC960_LP_privdata),
3232 },
3233 {0, },
3234 };
3235
3236 MODULE_DEVICE_TABLE(pci, myrs_id_table);
3237
3238 static struct pci_driver myrs_pci_driver = {
3239 .name = "myrs",
3240 .id_table = myrs_id_table,
3241 .probe = myrs_probe,
3242 .remove = myrs_remove,
3243 };
3244
3245 static int __init myrs_init_module(void)
3246 {
3247 int ret;
3248
3249 myrs_raid_template = raid_class_attach(&myrs_raid_functions);
3250 if (!myrs_raid_template)
3251 return -ENODEV;
3252
3253 ret = pci_register_driver(&myrs_pci_driver);
3254 if (ret)
3255 raid_class_release(myrs_raid_template);
3256
3257 return ret;
3258 }
3259
3260 static void __exit myrs_cleanup_module(void)
3261 {
3262 pci_unregister_driver(&myrs_pci_driver);
3263 raid_class_release(myrs_raid_template);
3264 }
3265
3266 module_init(myrs_init_module);
3267 module_exit(myrs_cleanup_module);
3268
3269 MODULE_DESCRIPTION("Mylex DAC960/AcceleRAID/eXtremeRAID driver (SCSI Interface)");
3270 MODULE_AUTHOR("Hannes Reinecke <hare@suse.com>");
3271 MODULE_LICENSE("GPL");
Linux with added FPC-III support