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edd16368 SC |
1 | /* |
2 | * Disk Array driver for HP Smart Array SAS controllers | |
3 | * Copyright 2000, 2009 Hewlett-Packard Development Company, L.P. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; version 2 of the License. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
12 | * NON INFRINGEMENT. See the GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
17 | * | |
18 | * Questions/Comments/Bugfixes to iss_storagedev@hp.com | |
19 | * | |
20 | */ | |
21 | ||
22 | #include <linux/module.h> | |
23 | #include <linux/interrupt.h> | |
24 | #include <linux/types.h> | |
25 | #include <linux/pci.h> | |
26 | #include <linux/kernel.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/delay.h> | |
29 | #include <linux/fs.h> | |
30 | #include <linux/timer.h> | |
31 | #include <linux/seq_file.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/spinlock.h> | |
34 | #include <linux/smp_lock.h> | |
35 | #include <linux/compat.h> | |
36 | #include <linux/blktrace_api.h> | |
37 | #include <linux/uaccess.h> | |
38 | #include <linux/io.h> | |
39 | #include <linux/dma-mapping.h> | |
40 | #include <linux/completion.h> | |
41 | #include <linux/moduleparam.h> | |
42 | #include <scsi/scsi.h> | |
43 | #include <scsi/scsi_cmnd.h> | |
44 | #include <scsi/scsi_device.h> | |
45 | #include <scsi/scsi_host.h> | |
46 | #include <linux/cciss_ioctl.h> | |
47 | #include <linux/string.h> | |
48 | #include <linux/bitmap.h> | |
49 | #include <asm/atomic.h> | |
50 | #include <linux/kthread.h> | |
51 | #include "hpsa_cmd.h" | |
52 | #include "hpsa.h" | |
53 | ||
54 | /* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */ | |
55 | #define HPSA_DRIVER_VERSION "1.0.0" | |
56 | #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")" | |
57 | ||
58 | /* How long to wait (in milliseconds) for board to go into simple mode */ | |
59 | #define MAX_CONFIG_WAIT 30000 | |
60 | #define MAX_IOCTL_CONFIG_WAIT 1000 | |
61 | ||
62 | /*define how many times we will try a command because of bus resets */ | |
63 | #define MAX_CMD_RETRIES 3 | |
64 | ||
65 | /* Embedded module documentation macros - see modules.h */ | |
66 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
67 | MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \ | |
68 | HPSA_DRIVER_VERSION); | |
69 | MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers"); | |
70 | MODULE_VERSION(HPSA_DRIVER_VERSION); | |
71 | MODULE_LICENSE("GPL"); | |
72 | ||
73 | static int hpsa_allow_any; | |
74 | module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR); | |
75 | MODULE_PARM_DESC(hpsa_allow_any, | |
76 | "Allow hpsa driver to access unknown HP Smart Array hardware"); | |
77 | ||
78 | /* define the PCI info for the cards we can control */ | |
79 | static const struct pci_device_id hpsa_pci_device_id[] = { | |
edd16368 SC |
80 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, |
81 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, | |
82 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, | |
83 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, | |
84 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, | |
85 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324a}, | |
86 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324b}, | |
f8b01eb9 MM |
87 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233}, |
88 | #define PCI_DEVICE_ID_HP_CISSF 0x333f | |
89 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x333F}, | |
edd16368 SC |
90 | {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, |
91 | PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, | |
92 | {0,} | |
93 | }; | |
94 | ||
95 | MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id); | |
96 | ||
97 | /* board_id = Subsystem Device ID & Vendor ID | |
98 | * product = Marketing Name for the board | |
99 | * access = Address of the struct of function pointers | |
100 | */ | |
101 | static struct board_type products[] = { | |
edd16368 SC |
102 | {0x3241103C, "Smart Array P212", &SA5_access}, |
103 | {0x3243103C, "Smart Array P410", &SA5_access}, | |
104 | {0x3245103C, "Smart Array P410i", &SA5_access}, | |
105 | {0x3247103C, "Smart Array P411", &SA5_access}, | |
106 | {0x3249103C, "Smart Array P812", &SA5_access}, | |
107 | {0x324a103C, "Smart Array P712m", &SA5_access}, | |
108 | {0x324b103C, "Smart Array P711m", &SA5_access}, | |
f8b01eb9 MM |
109 | {0x3233103C, "StorageWorks P1210m", &SA5_access}, |
110 | {0x333F103C, "StorageWorks P1210m", &SA5_access}, | |
edd16368 SC |
111 | {0xFFFF103C, "Unknown Smart Array", &SA5_access}, |
112 | }; | |
113 | ||
114 | static int number_of_controllers; | |
115 | ||
116 | static irqreturn_t do_hpsa_intr(int irq, void *dev_id); | |
117 | static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg); | |
118 | static void start_io(struct ctlr_info *h); | |
119 | ||
120 | #ifdef CONFIG_COMPAT | |
121 | static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg); | |
122 | #endif | |
123 | ||
124 | static void cmd_free(struct ctlr_info *h, struct CommandList *c); | |
125 | static void cmd_special_free(struct ctlr_info *h, struct CommandList *c); | |
126 | static struct CommandList *cmd_alloc(struct ctlr_info *h); | |
127 | static struct CommandList *cmd_special_alloc(struct ctlr_info *h); | |
01a02ffc SC |
128 | static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, |
129 | void *buff, size_t size, u8 page_code, unsigned char *scsi3addr, | |
edd16368 SC |
130 | int cmd_type); |
131 | ||
132 | static int hpsa_scsi_queue_command(struct scsi_cmnd *cmd, | |
133 | void (*done)(struct scsi_cmnd *)); | |
134 | ||
135 | static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd); | |
136 | static int hpsa_slave_alloc(struct scsi_device *sdev); | |
137 | static void hpsa_slave_destroy(struct scsi_device *sdev); | |
138 | ||
139 | static ssize_t raid_level_show(struct device *dev, | |
140 | struct device_attribute *attr, char *buf); | |
141 | static ssize_t lunid_show(struct device *dev, | |
142 | struct device_attribute *attr, char *buf); | |
143 | static ssize_t unique_id_show(struct device *dev, | |
144 | struct device_attribute *attr, char *buf); | |
145 | static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno); | |
146 | static ssize_t host_store_rescan(struct device *dev, | |
147 | struct device_attribute *attr, const char *buf, size_t count); | |
148 | static int check_for_unit_attention(struct ctlr_info *h, | |
149 | struct CommandList *c); | |
150 | static void check_ioctl_unit_attention(struct ctlr_info *h, | |
151 | struct CommandList *c); | |
303932fd DB |
152 | /* performant mode helper functions */ |
153 | static void calc_bucket_map(int *bucket, int num_buckets, | |
154 | int nsgs, int *bucket_map); | |
155 | static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h); | |
156 | static inline u32 next_command(struct ctlr_info *h); | |
edd16368 SC |
157 | |
158 | static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL); | |
159 | static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL); | |
160 | static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL); | |
161 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); | |
162 | ||
163 | static struct device_attribute *hpsa_sdev_attrs[] = { | |
164 | &dev_attr_raid_level, | |
165 | &dev_attr_lunid, | |
166 | &dev_attr_unique_id, | |
167 | NULL, | |
168 | }; | |
169 | ||
170 | static struct device_attribute *hpsa_shost_attrs[] = { | |
171 | &dev_attr_rescan, | |
172 | NULL, | |
173 | }; | |
174 | ||
175 | static struct scsi_host_template hpsa_driver_template = { | |
176 | .module = THIS_MODULE, | |
177 | .name = "hpsa", | |
178 | .proc_name = "hpsa", | |
179 | .queuecommand = hpsa_scsi_queue_command, | |
edd16368 SC |
180 | .this_id = -1, |
181 | .sg_tablesize = MAXSGENTRIES, | |
edd16368 SC |
182 | .use_clustering = ENABLE_CLUSTERING, |
183 | .eh_device_reset_handler = hpsa_eh_device_reset_handler, | |
184 | .ioctl = hpsa_ioctl, | |
185 | .slave_alloc = hpsa_slave_alloc, | |
186 | .slave_destroy = hpsa_slave_destroy, | |
187 | #ifdef CONFIG_COMPAT | |
188 | .compat_ioctl = hpsa_compat_ioctl, | |
189 | #endif | |
190 | .sdev_attrs = hpsa_sdev_attrs, | |
191 | .shost_attrs = hpsa_shost_attrs, | |
192 | }; | |
193 | ||
194 | static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev) | |
195 | { | |
196 | unsigned long *priv = shost_priv(sdev->host); | |
197 | return (struct ctlr_info *) *priv; | |
198 | } | |
199 | ||
200 | static struct task_struct *hpsa_scan_thread; | |
201 | static DEFINE_MUTEX(hpsa_scan_mutex); | |
202 | static LIST_HEAD(hpsa_scan_q); | |
203 | static int hpsa_scan_func(void *data); | |
204 | ||
205 | /** | |
206 | * add_to_scan_list() - add controller to rescan queue | |
207 | * @h: Pointer to the controller. | |
208 | * | |
209 | * Adds the controller to the rescan queue if not already on the queue. | |
210 | * | |
211 | * returns 1 if added to the queue, 0 if skipped (could be on the | |
212 | * queue already, or the controller could be initializing or shutting | |
213 | * down). | |
214 | **/ | |
215 | static int add_to_scan_list(struct ctlr_info *h) | |
216 | { | |
217 | struct ctlr_info *test_h; | |
218 | int found = 0; | |
219 | int ret = 0; | |
220 | ||
221 | if (h->busy_initializing) | |
222 | return 0; | |
223 | ||
224 | /* | |
225 | * If we don't get the lock, it means the driver is unloading | |
226 | * and there's no point in scheduling a new scan. | |
227 | */ | |
228 | if (!mutex_trylock(&h->busy_shutting_down)) | |
229 | return 0; | |
230 | ||
231 | mutex_lock(&hpsa_scan_mutex); | |
232 | list_for_each_entry(test_h, &hpsa_scan_q, scan_list) { | |
233 | if (test_h == h) { | |
234 | found = 1; | |
235 | break; | |
236 | } | |
237 | } | |
238 | if (!found && !h->busy_scanning) { | |
239 | INIT_COMPLETION(h->scan_wait); | |
240 | list_add_tail(&h->scan_list, &hpsa_scan_q); | |
241 | ret = 1; | |
242 | } | |
243 | mutex_unlock(&hpsa_scan_mutex); | |
244 | mutex_unlock(&h->busy_shutting_down); | |
245 | ||
246 | return ret; | |
247 | } | |
248 | ||
249 | /** | |
250 | * remove_from_scan_list() - remove controller from rescan queue | |
251 | * @h: Pointer to the controller. | |
252 | * | |
253 | * Removes the controller from the rescan queue if present. Blocks if | |
254 | * the controller is currently conducting a rescan. The controller | |
255 | * can be in one of three states: | |
256 | * 1. Doesn't need a scan | |
257 | * 2. On the scan list, but not scanning yet (we remove it) | |
258 | * 3. Busy scanning (and not on the list). In this case we want to wait for | |
259 | * the scan to complete to make sure the scanning thread for this | |
260 | * controller is completely idle. | |
261 | **/ | |
262 | static void remove_from_scan_list(struct ctlr_info *h) | |
263 | { | |
264 | struct ctlr_info *test_h, *tmp_h; | |
265 | ||
266 | mutex_lock(&hpsa_scan_mutex); | |
267 | list_for_each_entry_safe(test_h, tmp_h, &hpsa_scan_q, scan_list) { | |
268 | if (test_h == h) { /* state 2. */ | |
269 | list_del(&h->scan_list); | |
270 | complete_all(&h->scan_wait); | |
271 | mutex_unlock(&hpsa_scan_mutex); | |
272 | return; | |
273 | } | |
274 | } | |
275 | if (h->busy_scanning) { /* state 3. */ | |
276 | mutex_unlock(&hpsa_scan_mutex); | |
277 | wait_for_completion(&h->scan_wait); | |
278 | } else { /* state 1, nothing to do. */ | |
279 | mutex_unlock(&hpsa_scan_mutex); | |
280 | } | |
281 | } | |
282 | ||
283 | /* hpsa_scan_func() - kernel thread used to rescan controllers | |
284 | * @data: Ignored. | |
285 | * | |
286 | * A kernel thread used scan for drive topology changes on | |
287 | * controllers. The thread processes only one controller at a time | |
288 | * using a queue. Controllers are added to the queue using | |
289 | * add_to_scan_list() and removed from the queue either after done | |
290 | * processing or using remove_from_scan_list(). | |
291 | * | |
292 | * returns 0. | |
293 | **/ | |
294 | static int hpsa_scan_func(__attribute__((unused)) void *data) | |
295 | { | |
296 | struct ctlr_info *h; | |
297 | int host_no; | |
298 | ||
299 | while (1) { | |
300 | set_current_state(TASK_INTERRUPTIBLE); | |
301 | schedule(); | |
302 | if (kthread_should_stop()) | |
303 | break; | |
304 | ||
305 | while (1) { | |
306 | mutex_lock(&hpsa_scan_mutex); | |
307 | if (list_empty(&hpsa_scan_q)) { | |
308 | mutex_unlock(&hpsa_scan_mutex); | |
309 | break; | |
310 | } | |
311 | h = list_entry(hpsa_scan_q.next, struct ctlr_info, | |
312 | scan_list); | |
313 | list_del(&h->scan_list); | |
314 | h->busy_scanning = 1; | |
315 | mutex_unlock(&hpsa_scan_mutex); | |
316 | host_no = h->scsi_host ? h->scsi_host->host_no : -1; | |
317 | hpsa_update_scsi_devices(h, host_no); | |
318 | complete_all(&h->scan_wait); | |
319 | mutex_lock(&hpsa_scan_mutex); | |
320 | h->busy_scanning = 0; | |
321 | mutex_unlock(&hpsa_scan_mutex); | |
322 | } | |
323 | } | |
324 | return 0; | |
325 | } | |
326 | ||
327 | static int check_for_unit_attention(struct ctlr_info *h, | |
328 | struct CommandList *c) | |
329 | { | |
330 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) | |
331 | return 0; | |
332 | ||
333 | switch (c->err_info->SenseInfo[12]) { | |
334 | case STATE_CHANGED: | |
335 | dev_warn(&h->pdev->dev, "hpsa%d: a state change " | |
336 | "detected, command retried\n", h->ctlr); | |
337 | break; | |
338 | case LUN_FAILED: | |
339 | dev_warn(&h->pdev->dev, "hpsa%d: LUN failure " | |
340 | "detected, action required\n", h->ctlr); | |
341 | break; | |
342 | case REPORT_LUNS_CHANGED: | |
343 | dev_warn(&h->pdev->dev, "hpsa%d: report LUN data " | |
344 | "changed\n", h->ctlr); | |
345 | /* | |
346 | * Here, we could call add_to_scan_list and wake up the scan thread, | |
347 | * except that it's quite likely that we will get more than one | |
348 | * REPORT_LUNS_CHANGED condition in quick succession, which means | |
349 | * that those which occur after the first one will likely happen | |
350 | * *during* the hpsa_scan_thread's rescan. And the rescan code is not | |
351 | * robust enough to restart in the middle, undoing what it has already | |
352 | * done, and it's not clear that it's even possible to do this, since | |
353 | * part of what it does is notify the SCSI mid layer, which starts | |
354 | * doing it's own i/o to read partition tables and so on, and the | |
355 | * driver doesn't have visibility to know what might need undoing. | |
356 | * In any event, if possible, it is horribly complicated to get right | |
357 | * so we just don't do it for now. | |
358 | * | |
359 | * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012. | |
360 | */ | |
361 | break; | |
362 | case POWER_OR_RESET: | |
363 | dev_warn(&h->pdev->dev, "hpsa%d: a power on " | |
364 | "or device reset detected\n", h->ctlr); | |
365 | break; | |
366 | case UNIT_ATTENTION_CLEARED: | |
367 | dev_warn(&h->pdev->dev, "hpsa%d: unit attention " | |
368 | "cleared by another initiator\n", h->ctlr); | |
369 | break; | |
370 | default: | |
371 | dev_warn(&h->pdev->dev, "hpsa%d: unknown " | |
372 | "unit attention detected\n", h->ctlr); | |
373 | break; | |
374 | } | |
375 | return 1; | |
376 | } | |
377 | ||
378 | static ssize_t host_store_rescan(struct device *dev, | |
379 | struct device_attribute *attr, | |
380 | const char *buf, size_t count) | |
381 | { | |
382 | struct ctlr_info *h; | |
383 | struct Scsi_Host *shost = class_to_shost(dev); | |
384 | unsigned long *priv = shost_priv(shost); | |
385 | h = (struct ctlr_info *) *priv; | |
386 | if (add_to_scan_list(h)) { | |
387 | wake_up_process(hpsa_scan_thread); | |
388 | wait_for_completion_interruptible(&h->scan_wait); | |
389 | } | |
390 | return count; | |
391 | } | |
392 | ||
393 | /* Enqueuing and dequeuing functions for cmdlists. */ | |
394 | static inline void addQ(struct hlist_head *list, struct CommandList *c) | |
395 | { | |
396 | hlist_add_head(&c->list, list); | |
397 | } | |
398 | ||
303932fd DB |
399 | static inline u32 next_command(struct ctlr_info *h) |
400 | { | |
401 | u32 a; | |
402 | ||
403 | if (unlikely(h->transMethod != CFGTBL_Trans_Performant)) | |
404 | return h->access.command_completed(h); | |
405 | ||
406 | if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) { | |
407 | a = *(h->reply_pool_head); /* Next cmd in ring buffer */ | |
408 | (h->reply_pool_head)++; | |
409 | h->commands_outstanding--; | |
410 | } else { | |
411 | a = FIFO_EMPTY; | |
412 | } | |
413 | /* Check for wraparound */ | |
414 | if (h->reply_pool_head == (h->reply_pool + h->max_commands)) { | |
415 | h->reply_pool_head = h->reply_pool; | |
416 | h->reply_pool_wraparound ^= 1; | |
417 | } | |
418 | return a; | |
419 | } | |
420 | ||
421 | /* set_performant_mode: Modify the tag for cciss performant | |
422 | * set bit 0 for pull model, bits 3-1 for block fetch | |
423 | * register number | |
424 | */ | |
425 | static void set_performant_mode(struct ctlr_info *h, struct CommandList *c) | |
426 | { | |
427 | if (likely(h->transMethod == CFGTBL_Trans_Performant)) | |
428 | c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); | |
429 | } | |
430 | ||
edd16368 SC |
431 | static void enqueue_cmd_and_start_io(struct ctlr_info *h, |
432 | struct CommandList *c) | |
433 | { | |
434 | unsigned long flags; | |
303932fd DB |
435 | |
436 | set_performant_mode(h, c); | |
edd16368 SC |
437 | spin_lock_irqsave(&h->lock, flags); |
438 | addQ(&h->reqQ, c); | |
439 | h->Qdepth++; | |
440 | start_io(h); | |
441 | spin_unlock_irqrestore(&h->lock, flags); | |
442 | } | |
443 | ||
444 | static inline void removeQ(struct CommandList *c) | |
445 | { | |
446 | if (WARN_ON(hlist_unhashed(&c->list))) | |
447 | return; | |
448 | hlist_del_init(&c->list); | |
449 | } | |
450 | ||
451 | static inline int is_hba_lunid(unsigned char scsi3addr[]) | |
452 | { | |
453 | return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0; | |
454 | } | |
455 | ||
456 | static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[]) | |
457 | { | |
458 | return (scsi3addr[3] & 0xC0) == 0x40; | |
459 | } | |
460 | ||
339b2b14 SC |
461 | static inline int is_scsi_rev_5(struct ctlr_info *h) |
462 | { | |
463 | if (!h->hba_inquiry_data) | |
464 | return 0; | |
465 | if ((h->hba_inquiry_data[2] & 0x07) == 5) | |
466 | return 1; | |
467 | return 0; | |
468 | } | |
469 | ||
edd16368 SC |
470 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
471 | "UNKNOWN" | |
472 | }; | |
473 | #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1) | |
474 | ||
475 | static ssize_t raid_level_show(struct device *dev, | |
476 | struct device_attribute *attr, char *buf) | |
477 | { | |
478 | ssize_t l = 0; | |
82a72c0a | 479 | unsigned char rlevel; |
edd16368 SC |
480 | struct ctlr_info *h; |
481 | struct scsi_device *sdev; | |
482 | struct hpsa_scsi_dev_t *hdev; | |
483 | unsigned long flags; | |
484 | ||
485 | sdev = to_scsi_device(dev); | |
486 | h = sdev_to_hba(sdev); | |
487 | spin_lock_irqsave(&h->lock, flags); | |
488 | hdev = sdev->hostdata; | |
489 | if (!hdev) { | |
490 | spin_unlock_irqrestore(&h->lock, flags); | |
491 | return -ENODEV; | |
492 | } | |
493 | ||
494 | /* Is this even a logical drive? */ | |
495 | if (!is_logical_dev_addr_mode(hdev->scsi3addr)) { | |
496 | spin_unlock_irqrestore(&h->lock, flags); | |
497 | l = snprintf(buf, PAGE_SIZE, "N/A\n"); | |
498 | return l; | |
499 | } | |
500 | ||
501 | rlevel = hdev->raid_level; | |
502 | spin_unlock_irqrestore(&h->lock, flags); | |
82a72c0a | 503 | if (rlevel > RAID_UNKNOWN) |
edd16368 SC |
504 | rlevel = RAID_UNKNOWN; |
505 | l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]); | |
506 | return l; | |
507 | } | |
508 | ||
509 | static ssize_t lunid_show(struct device *dev, | |
510 | struct device_attribute *attr, char *buf) | |
511 | { | |
512 | struct ctlr_info *h; | |
513 | struct scsi_device *sdev; | |
514 | struct hpsa_scsi_dev_t *hdev; | |
515 | unsigned long flags; | |
516 | unsigned char lunid[8]; | |
517 | ||
518 | sdev = to_scsi_device(dev); | |
519 | h = sdev_to_hba(sdev); | |
520 | spin_lock_irqsave(&h->lock, flags); | |
521 | hdev = sdev->hostdata; | |
522 | if (!hdev) { | |
523 | spin_unlock_irqrestore(&h->lock, flags); | |
524 | return -ENODEV; | |
525 | } | |
526 | memcpy(lunid, hdev->scsi3addr, sizeof(lunid)); | |
527 | spin_unlock_irqrestore(&h->lock, flags); | |
528 | return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
529 | lunid[0], lunid[1], lunid[2], lunid[3], | |
530 | lunid[4], lunid[5], lunid[6], lunid[7]); | |
531 | } | |
532 | ||
533 | static ssize_t unique_id_show(struct device *dev, | |
534 | struct device_attribute *attr, char *buf) | |
535 | { | |
536 | struct ctlr_info *h; | |
537 | struct scsi_device *sdev; | |
538 | struct hpsa_scsi_dev_t *hdev; | |
539 | unsigned long flags; | |
540 | unsigned char sn[16]; | |
541 | ||
542 | sdev = to_scsi_device(dev); | |
543 | h = sdev_to_hba(sdev); | |
544 | spin_lock_irqsave(&h->lock, flags); | |
545 | hdev = sdev->hostdata; | |
546 | if (!hdev) { | |
547 | spin_unlock_irqrestore(&h->lock, flags); | |
548 | return -ENODEV; | |
549 | } | |
550 | memcpy(sn, hdev->device_id, sizeof(sn)); | |
551 | spin_unlock_irqrestore(&h->lock, flags); | |
552 | return snprintf(buf, 16 * 2 + 2, | |
553 | "%02X%02X%02X%02X%02X%02X%02X%02X" | |
554 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", | |
555 | sn[0], sn[1], sn[2], sn[3], | |
556 | sn[4], sn[5], sn[6], sn[7], | |
557 | sn[8], sn[9], sn[10], sn[11], | |
558 | sn[12], sn[13], sn[14], sn[15]); | |
559 | } | |
560 | ||
561 | static int hpsa_find_target_lun(struct ctlr_info *h, | |
562 | unsigned char scsi3addr[], int bus, int *target, int *lun) | |
563 | { | |
564 | /* finds an unused bus, target, lun for a new physical device | |
565 | * assumes h->devlock is held | |
566 | */ | |
567 | int i, found = 0; | |
568 | DECLARE_BITMAP(lun_taken, HPSA_MAX_SCSI_DEVS_PER_HBA); | |
569 | ||
570 | memset(&lun_taken[0], 0, HPSA_MAX_SCSI_DEVS_PER_HBA >> 3); | |
571 | ||
572 | for (i = 0; i < h->ndevices; i++) { | |
573 | if (h->dev[i]->bus == bus && h->dev[i]->target != -1) | |
574 | set_bit(h->dev[i]->target, lun_taken); | |
575 | } | |
576 | ||
577 | for (i = 0; i < HPSA_MAX_SCSI_DEVS_PER_HBA; i++) { | |
578 | if (!test_bit(i, lun_taken)) { | |
579 | /* *bus = 1; */ | |
580 | *target = i; | |
581 | *lun = 0; | |
582 | found = 1; | |
583 | break; | |
584 | } | |
585 | } | |
586 | return !found; | |
587 | } | |
588 | ||
589 | /* Add an entry into h->dev[] array. */ | |
590 | static int hpsa_scsi_add_entry(struct ctlr_info *h, int hostno, | |
591 | struct hpsa_scsi_dev_t *device, | |
592 | struct hpsa_scsi_dev_t *added[], int *nadded) | |
593 | { | |
594 | /* assumes h->devlock is held */ | |
595 | int n = h->ndevices; | |
596 | int i; | |
597 | unsigned char addr1[8], addr2[8]; | |
598 | struct hpsa_scsi_dev_t *sd; | |
599 | ||
600 | if (n >= HPSA_MAX_SCSI_DEVS_PER_HBA) { | |
601 | dev_err(&h->pdev->dev, "too many devices, some will be " | |
602 | "inaccessible.\n"); | |
603 | return -1; | |
604 | } | |
605 | ||
606 | /* physical devices do not have lun or target assigned until now. */ | |
607 | if (device->lun != -1) | |
608 | /* Logical device, lun is already assigned. */ | |
609 | goto lun_assigned; | |
610 | ||
611 | /* If this device a non-zero lun of a multi-lun device | |
612 | * byte 4 of the 8-byte LUN addr will contain the logical | |
613 | * unit no, zero otherise. | |
614 | */ | |
615 | if (device->scsi3addr[4] == 0) { | |
616 | /* This is not a non-zero lun of a multi-lun device */ | |
617 | if (hpsa_find_target_lun(h, device->scsi3addr, | |
618 | device->bus, &device->target, &device->lun) != 0) | |
619 | return -1; | |
620 | goto lun_assigned; | |
621 | } | |
622 | ||
623 | /* This is a non-zero lun of a multi-lun device. | |
624 | * Search through our list and find the device which | |
625 | * has the same 8 byte LUN address, excepting byte 4. | |
626 | * Assign the same bus and target for this new LUN. | |
627 | * Use the logical unit number from the firmware. | |
628 | */ | |
629 | memcpy(addr1, device->scsi3addr, 8); | |
630 | addr1[4] = 0; | |
631 | for (i = 0; i < n; i++) { | |
632 | sd = h->dev[i]; | |
633 | memcpy(addr2, sd->scsi3addr, 8); | |
634 | addr2[4] = 0; | |
635 | /* differ only in byte 4? */ | |
636 | if (memcmp(addr1, addr2, 8) == 0) { | |
637 | device->bus = sd->bus; | |
638 | device->target = sd->target; | |
639 | device->lun = device->scsi3addr[4]; | |
640 | break; | |
641 | } | |
642 | } | |
643 | if (device->lun == -1) { | |
644 | dev_warn(&h->pdev->dev, "physical device with no LUN=0," | |
645 | " suspect firmware bug or unsupported hardware " | |
646 | "configuration.\n"); | |
647 | return -1; | |
648 | } | |
649 | ||
650 | lun_assigned: | |
651 | ||
652 | h->dev[n] = device; | |
653 | h->ndevices++; | |
654 | added[*nadded] = device; | |
655 | (*nadded)++; | |
656 | ||
657 | /* initially, (before registering with scsi layer) we don't | |
658 | * know our hostno and we don't want to print anything first | |
659 | * time anyway (the scsi layer's inquiries will show that info) | |
660 | */ | |
661 | /* if (hostno != -1) */ | |
662 | dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d added.\n", | |
663 | scsi_device_type(device->devtype), hostno, | |
664 | device->bus, device->target, device->lun); | |
665 | return 0; | |
666 | } | |
667 | ||
668 | /* Remove an entry from h->dev[] array. */ | |
669 | static void hpsa_scsi_remove_entry(struct ctlr_info *h, int hostno, int entry, | |
670 | struct hpsa_scsi_dev_t *removed[], int *nremoved) | |
671 | { | |
672 | /* assumes h->devlock is held */ | |
673 | int i; | |
674 | struct hpsa_scsi_dev_t *sd; | |
675 | ||
b2ed4f79 | 676 | BUG_ON(entry < 0 || entry >= HPSA_MAX_SCSI_DEVS_PER_HBA); |
edd16368 SC |
677 | |
678 | sd = h->dev[entry]; | |
679 | removed[*nremoved] = h->dev[entry]; | |
680 | (*nremoved)++; | |
681 | ||
682 | for (i = entry; i < h->ndevices-1; i++) | |
683 | h->dev[i] = h->dev[i+1]; | |
684 | h->ndevices--; | |
685 | dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d removed.\n", | |
686 | scsi_device_type(sd->devtype), hostno, sd->bus, sd->target, | |
687 | sd->lun); | |
688 | } | |
689 | ||
690 | #define SCSI3ADDR_EQ(a, b) ( \ | |
691 | (a)[7] == (b)[7] && \ | |
692 | (a)[6] == (b)[6] && \ | |
693 | (a)[5] == (b)[5] && \ | |
694 | (a)[4] == (b)[4] && \ | |
695 | (a)[3] == (b)[3] && \ | |
696 | (a)[2] == (b)[2] && \ | |
697 | (a)[1] == (b)[1] && \ | |
698 | (a)[0] == (b)[0]) | |
699 | ||
700 | static void fixup_botched_add(struct ctlr_info *h, | |
701 | struct hpsa_scsi_dev_t *added) | |
702 | { | |
703 | /* called when scsi_add_device fails in order to re-adjust | |
704 | * h->dev[] to match the mid layer's view. | |
705 | */ | |
706 | unsigned long flags; | |
707 | int i, j; | |
708 | ||
709 | spin_lock_irqsave(&h->lock, flags); | |
710 | for (i = 0; i < h->ndevices; i++) { | |
711 | if (h->dev[i] == added) { | |
712 | for (j = i; j < h->ndevices-1; j++) | |
713 | h->dev[j] = h->dev[j+1]; | |
714 | h->ndevices--; | |
715 | break; | |
716 | } | |
717 | } | |
718 | spin_unlock_irqrestore(&h->lock, flags); | |
719 | kfree(added); | |
720 | } | |
721 | ||
722 | static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1, | |
723 | struct hpsa_scsi_dev_t *dev2) | |
724 | { | |
725 | if ((is_logical_dev_addr_mode(dev1->scsi3addr) || | |
726 | (dev1->lun != -1 && dev2->lun != -1)) && | |
727 | dev1->devtype != 0x0C) | |
728 | return (memcmp(dev1, dev2, sizeof(*dev1)) == 0); | |
729 | ||
730 | /* we compare everything except lun and target as these | |
731 | * are not yet assigned. Compare parts likely | |
732 | * to differ first | |
733 | */ | |
734 | if (memcmp(dev1->scsi3addr, dev2->scsi3addr, | |
735 | sizeof(dev1->scsi3addr)) != 0) | |
736 | return 0; | |
737 | if (memcmp(dev1->device_id, dev2->device_id, | |
738 | sizeof(dev1->device_id)) != 0) | |
739 | return 0; | |
740 | if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0) | |
741 | return 0; | |
742 | if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0) | |
743 | return 0; | |
744 | if (memcmp(dev1->revision, dev2->revision, sizeof(dev1->revision)) != 0) | |
745 | return 0; | |
746 | if (dev1->devtype != dev2->devtype) | |
747 | return 0; | |
748 | if (dev1->raid_level != dev2->raid_level) | |
749 | return 0; | |
750 | if (dev1->bus != dev2->bus) | |
751 | return 0; | |
752 | return 1; | |
753 | } | |
754 | ||
755 | /* Find needle in haystack. If exact match found, return DEVICE_SAME, | |
756 | * and return needle location in *index. If scsi3addr matches, but not | |
757 | * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle | |
758 | * location in *index. If needle not found, return DEVICE_NOT_FOUND. | |
759 | */ | |
760 | static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle, | |
761 | struct hpsa_scsi_dev_t *haystack[], int haystack_size, | |
762 | int *index) | |
763 | { | |
764 | int i; | |
765 | #define DEVICE_NOT_FOUND 0 | |
766 | #define DEVICE_CHANGED 1 | |
767 | #define DEVICE_SAME 2 | |
768 | for (i = 0; i < haystack_size; i++) { | |
769 | if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) { | |
770 | *index = i; | |
771 | if (device_is_the_same(needle, haystack[i])) | |
772 | return DEVICE_SAME; | |
773 | else | |
774 | return DEVICE_CHANGED; | |
775 | } | |
776 | } | |
777 | *index = -1; | |
778 | return DEVICE_NOT_FOUND; | |
779 | } | |
780 | ||
4967bd3e | 781 | static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno, |
edd16368 SC |
782 | struct hpsa_scsi_dev_t *sd[], int nsds) |
783 | { | |
784 | /* sd contains scsi3 addresses and devtypes, and inquiry | |
785 | * data. This function takes what's in sd to be the current | |
786 | * reality and updates h->dev[] to reflect that reality. | |
787 | */ | |
788 | int i, entry, device_change, changes = 0; | |
789 | struct hpsa_scsi_dev_t *csd; | |
790 | unsigned long flags; | |
791 | struct hpsa_scsi_dev_t **added, **removed; | |
792 | int nadded, nremoved; | |
793 | struct Scsi_Host *sh = NULL; | |
794 | ||
795 | added = kzalloc(sizeof(*added) * HPSA_MAX_SCSI_DEVS_PER_HBA, | |
796 | GFP_KERNEL); | |
797 | removed = kzalloc(sizeof(*removed) * HPSA_MAX_SCSI_DEVS_PER_HBA, | |
798 | GFP_KERNEL); | |
799 | ||
800 | if (!added || !removed) { | |
801 | dev_warn(&h->pdev->dev, "out of memory in " | |
802 | "adjust_hpsa_scsi_table\n"); | |
803 | goto free_and_out; | |
804 | } | |
805 | ||
806 | spin_lock_irqsave(&h->devlock, flags); | |
807 | ||
808 | /* find any devices in h->dev[] that are not in | |
809 | * sd[] and remove them from h->dev[], and for any | |
810 | * devices which have changed, remove the old device | |
811 | * info and add the new device info. | |
812 | */ | |
813 | i = 0; | |
814 | nremoved = 0; | |
815 | nadded = 0; | |
816 | while (i < h->ndevices) { | |
817 | csd = h->dev[i]; | |
818 | device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry); | |
819 | if (device_change == DEVICE_NOT_FOUND) { | |
820 | changes++; | |
821 | hpsa_scsi_remove_entry(h, hostno, i, | |
822 | removed, &nremoved); | |
823 | continue; /* remove ^^^, hence i not incremented */ | |
824 | } else if (device_change == DEVICE_CHANGED) { | |
825 | changes++; | |
826 | hpsa_scsi_remove_entry(h, hostno, i, | |
827 | removed, &nremoved); | |
828 | (void) hpsa_scsi_add_entry(h, hostno, sd[entry], | |
829 | added, &nadded); | |
830 | /* add can't fail, we just removed one. */ | |
831 | sd[entry] = NULL; /* prevent it from being freed */ | |
832 | } | |
833 | i++; | |
834 | } | |
835 | ||
836 | /* Now, make sure every device listed in sd[] is also | |
837 | * listed in h->dev[], adding them if they aren't found | |
838 | */ | |
839 | ||
840 | for (i = 0; i < nsds; i++) { | |
841 | if (!sd[i]) /* if already added above. */ | |
842 | continue; | |
843 | device_change = hpsa_scsi_find_entry(sd[i], h->dev, | |
844 | h->ndevices, &entry); | |
845 | if (device_change == DEVICE_NOT_FOUND) { | |
846 | changes++; | |
847 | if (hpsa_scsi_add_entry(h, hostno, sd[i], | |
848 | added, &nadded) != 0) | |
849 | break; | |
850 | sd[i] = NULL; /* prevent from being freed later. */ | |
851 | } else if (device_change == DEVICE_CHANGED) { | |
852 | /* should never happen... */ | |
853 | changes++; | |
854 | dev_warn(&h->pdev->dev, | |
855 | "device unexpectedly changed.\n"); | |
856 | /* but if it does happen, we just ignore that device */ | |
857 | } | |
858 | } | |
859 | spin_unlock_irqrestore(&h->devlock, flags); | |
860 | ||
861 | /* Don't notify scsi mid layer of any changes the first time through | |
862 | * (or if there are no changes) scsi_scan_host will do it later the | |
863 | * first time through. | |
864 | */ | |
865 | if (hostno == -1 || !changes) | |
866 | goto free_and_out; | |
867 | ||
868 | sh = h->scsi_host; | |
869 | /* Notify scsi mid layer of any removed devices */ | |
870 | for (i = 0; i < nremoved; i++) { | |
871 | struct scsi_device *sdev = | |
872 | scsi_device_lookup(sh, removed[i]->bus, | |
873 | removed[i]->target, removed[i]->lun); | |
874 | if (sdev != NULL) { | |
875 | scsi_remove_device(sdev); | |
876 | scsi_device_put(sdev); | |
877 | } else { | |
878 | /* We don't expect to get here. | |
879 | * future cmds to this device will get selection | |
880 | * timeout as if the device was gone. | |
881 | */ | |
882 | dev_warn(&h->pdev->dev, "didn't find c%db%dt%dl%d " | |
883 | " for removal.", hostno, removed[i]->bus, | |
884 | removed[i]->target, removed[i]->lun); | |
885 | } | |
886 | kfree(removed[i]); | |
887 | removed[i] = NULL; | |
888 | } | |
889 | ||
890 | /* Notify scsi mid layer of any added devices */ | |
891 | for (i = 0; i < nadded; i++) { | |
892 | if (scsi_add_device(sh, added[i]->bus, | |
893 | added[i]->target, added[i]->lun) == 0) | |
894 | continue; | |
895 | dev_warn(&h->pdev->dev, "scsi_add_device c%db%dt%dl%d failed, " | |
896 | "device not added.\n", hostno, added[i]->bus, | |
897 | added[i]->target, added[i]->lun); | |
898 | /* now we have to remove it from h->dev, | |
899 | * since it didn't get added to scsi mid layer | |
900 | */ | |
901 | fixup_botched_add(h, added[i]); | |
902 | } | |
903 | ||
904 | free_and_out: | |
905 | kfree(added); | |
906 | kfree(removed); | |
edd16368 SC |
907 | } |
908 | ||
909 | /* | |
910 | * Lookup bus/target/lun and retrun corresponding struct hpsa_scsi_dev_t * | |
911 | * Assume's h->devlock is held. | |
912 | */ | |
913 | static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h, | |
914 | int bus, int target, int lun) | |
915 | { | |
916 | int i; | |
917 | struct hpsa_scsi_dev_t *sd; | |
918 | ||
919 | for (i = 0; i < h->ndevices; i++) { | |
920 | sd = h->dev[i]; | |
921 | if (sd->bus == bus && sd->target == target && sd->lun == lun) | |
922 | return sd; | |
923 | } | |
924 | return NULL; | |
925 | } | |
926 | ||
927 | /* link sdev->hostdata to our per-device structure. */ | |
928 | static int hpsa_slave_alloc(struct scsi_device *sdev) | |
929 | { | |
930 | struct hpsa_scsi_dev_t *sd; | |
931 | unsigned long flags; | |
932 | struct ctlr_info *h; | |
933 | ||
934 | h = sdev_to_hba(sdev); | |
935 | spin_lock_irqsave(&h->devlock, flags); | |
936 | sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev), | |
937 | sdev_id(sdev), sdev->lun); | |
938 | if (sd != NULL) | |
939 | sdev->hostdata = sd; | |
940 | spin_unlock_irqrestore(&h->devlock, flags); | |
941 | return 0; | |
942 | } | |
943 | ||
944 | static void hpsa_slave_destroy(struct scsi_device *sdev) | |
945 | { | |
bcc44255 | 946 | /* nothing to do. */ |
edd16368 SC |
947 | } |
948 | ||
949 | static void hpsa_scsi_setup(struct ctlr_info *h) | |
950 | { | |
951 | h->ndevices = 0; | |
952 | h->scsi_host = NULL; | |
953 | spin_lock_init(&h->devlock); | |
edd16368 SC |
954 | } |
955 | ||
956 | static void complete_scsi_command(struct CommandList *cp, | |
01a02ffc | 957 | int timeout, u32 tag) |
edd16368 SC |
958 | { |
959 | struct scsi_cmnd *cmd; | |
960 | struct ctlr_info *h; | |
961 | struct ErrorInfo *ei; | |
962 | ||
963 | unsigned char sense_key; | |
964 | unsigned char asc; /* additional sense code */ | |
965 | unsigned char ascq; /* additional sense code qualifier */ | |
966 | ||
967 | ei = cp->err_info; | |
968 | cmd = (struct scsi_cmnd *) cp->scsi_cmd; | |
969 | h = cp->h; | |
970 | ||
971 | scsi_dma_unmap(cmd); /* undo the DMA mappings */ | |
972 | ||
973 | cmd->result = (DID_OK << 16); /* host byte */ | |
974 | cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ | |
975 | cmd->result |= (ei->ScsiStatus << 1); | |
976 | ||
977 | /* copy the sense data whether we need to or not. */ | |
978 | memcpy(cmd->sense_buffer, ei->SenseInfo, | |
979 | ei->SenseLen > SCSI_SENSE_BUFFERSIZE ? | |
980 | SCSI_SENSE_BUFFERSIZE : | |
981 | ei->SenseLen); | |
982 | scsi_set_resid(cmd, ei->ResidualCnt); | |
983 | ||
984 | if (ei->CommandStatus == 0) { | |
985 | cmd->scsi_done(cmd); | |
986 | cmd_free(h, cp); | |
987 | return; | |
988 | } | |
989 | ||
990 | /* an error has occurred */ | |
991 | switch (ei->CommandStatus) { | |
992 | ||
993 | case CMD_TARGET_STATUS: | |
994 | if (ei->ScsiStatus) { | |
995 | /* Get sense key */ | |
996 | sense_key = 0xf & ei->SenseInfo[2]; | |
997 | /* Get additional sense code */ | |
998 | asc = ei->SenseInfo[12]; | |
999 | /* Get addition sense code qualifier */ | |
1000 | ascq = ei->SenseInfo[13]; | |
1001 | } | |
1002 | ||
1003 | if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) { | |
1004 | if (check_for_unit_attention(h, cp)) { | |
1005 | cmd->result = DID_SOFT_ERROR << 16; | |
1006 | break; | |
1007 | } | |
1008 | if (sense_key == ILLEGAL_REQUEST) { | |
1009 | /* | |
1010 | * SCSI REPORT_LUNS is commonly unsupported on | |
1011 | * Smart Array. Suppress noisy complaint. | |
1012 | */ | |
1013 | if (cp->Request.CDB[0] == REPORT_LUNS) | |
1014 | break; | |
1015 | ||
1016 | /* If ASC/ASCQ indicate Logical Unit | |
1017 | * Not Supported condition, | |
1018 | */ | |
1019 | if ((asc == 0x25) && (ascq == 0x0)) { | |
1020 | dev_warn(&h->pdev->dev, "cp %p " | |
1021 | "has check condition\n", cp); | |
1022 | break; | |
1023 | } | |
1024 | } | |
1025 | ||
1026 | if (sense_key == NOT_READY) { | |
1027 | /* If Sense is Not Ready, Logical Unit | |
1028 | * Not ready, Manual Intervention | |
1029 | * required | |
1030 | */ | |
1031 | if ((asc == 0x04) && (ascq == 0x03)) { | |
edd16368 SC |
1032 | dev_warn(&h->pdev->dev, "cp %p " |
1033 | "has check condition: unit " | |
1034 | "not ready, manual " | |
1035 | "intervention required\n", cp); | |
1036 | break; | |
1037 | } | |
1038 | } | |
1d3b3609 MG |
1039 | if (sense_key == ABORTED_COMMAND) { |
1040 | /* Aborted command is retryable */ | |
1041 | dev_warn(&h->pdev->dev, "cp %p " | |
1042 | "has check condition: aborted command: " | |
1043 | "ASC: 0x%x, ASCQ: 0x%x\n", | |
1044 | cp, asc, ascq); | |
1045 | cmd->result = DID_SOFT_ERROR << 16; | |
1046 | break; | |
1047 | } | |
edd16368 SC |
1048 | /* Must be some other type of check condition */ |
1049 | dev_warn(&h->pdev->dev, "cp %p has check condition: " | |
1050 | "unknown type: " | |
1051 | "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, " | |
1052 | "Returning result: 0x%x, " | |
1053 | "cmd=[%02x %02x %02x %02x %02x " | |
1054 | "%02x %02x %02x %02x %02x]\n", | |
1055 | cp, sense_key, asc, ascq, | |
1056 | cmd->result, | |
1057 | cmd->cmnd[0], cmd->cmnd[1], | |
1058 | cmd->cmnd[2], cmd->cmnd[3], | |
1059 | cmd->cmnd[4], cmd->cmnd[5], | |
1060 | cmd->cmnd[6], cmd->cmnd[7], | |
1061 | cmd->cmnd[8], cmd->cmnd[9]); | |
1062 | break; | |
1063 | } | |
1064 | ||
1065 | ||
1066 | /* Problem was not a check condition | |
1067 | * Pass it up to the upper layers... | |
1068 | */ | |
1069 | if (ei->ScsiStatus) { | |
1070 | dev_warn(&h->pdev->dev, "cp %p has status 0x%x " | |
1071 | "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, " | |
1072 | "Returning result: 0x%x\n", | |
1073 | cp, ei->ScsiStatus, | |
1074 | sense_key, asc, ascq, | |
1075 | cmd->result); | |
1076 | } else { /* scsi status is zero??? How??? */ | |
1077 | dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. " | |
1078 | "Returning no connection.\n", cp), | |
1079 | ||
1080 | /* Ordinarily, this case should never happen, | |
1081 | * but there is a bug in some released firmware | |
1082 | * revisions that allows it to happen if, for | |
1083 | * example, a 4100 backplane loses power and | |
1084 | * the tape drive is in it. We assume that | |
1085 | * it's a fatal error of some kind because we | |
1086 | * can't show that it wasn't. We will make it | |
1087 | * look like selection timeout since that is | |
1088 | * the most common reason for this to occur, | |
1089 | * and it's severe enough. | |
1090 | */ | |
1091 | ||
1092 | cmd->result = DID_NO_CONNECT << 16; | |
1093 | } | |
1094 | break; | |
1095 | ||
1096 | case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ | |
1097 | break; | |
1098 | case CMD_DATA_OVERRUN: | |
1099 | dev_warn(&h->pdev->dev, "cp %p has" | |
1100 | " completed with data overrun " | |
1101 | "reported\n", cp); | |
1102 | break; | |
1103 | case CMD_INVALID: { | |
1104 | /* print_bytes(cp, sizeof(*cp), 1, 0); | |
1105 | print_cmd(cp); */ | |
1106 | /* We get CMD_INVALID if you address a non-existent device | |
1107 | * instead of a selection timeout (no response). You will | |
1108 | * see this if you yank out a drive, then try to access it. | |
1109 | * This is kind of a shame because it means that any other | |
1110 | * CMD_INVALID (e.g. driver bug) will get interpreted as a | |
1111 | * missing target. */ | |
1112 | cmd->result = DID_NO_CONNECT << 16; | |
1113 | } | |
1114 | break; | |
1115 | case CMD_PROTOCOL_ERR: | |
1116 | dev_warn(&h->pdev->dev, "cp %p has " | |
1117 | "protocol error \n", cp); | |
1118 | break; | |
1119 | case CMD_HARDWARE_ERR: | |
1120 | cmd->result = DID_ERROR << 16; | |
1121 | dev_warn(&h->pdev->dev, "cp %p had hardware error\n", cp); | |
1122 | break; | |
1123 | case CMD_CONNECTION_LOST: | |
1124 | cmd->result = DID_ERROR << 16; | |
1125 | dev_warn(&h->pdev->dev, "cp %p had connection lost\n", cp); | |
1126 | break; | |
1127 | case CMD_ABORTED: | |
1128 | cmd->result = DID_ABORT << 16; | |
1129 | dev_warn(&h->pdev->dev, "cp %p was aborted with status 0x%x\n", | |
1130 | cp, ei->ScsiStatus); | |
1131 | break; | |
1132 | case CMD_ABORT_FAILED: | |
1133 | cmd->result = DID_ERROR << 16; | |
1134 | dev_warn(&h->pdev->dev, "cp %p reports abort failed\n", cp); | |
1135 | break; | |
1136 | case CMD_UNSOLICITED_ABORT: | |
5f0325ab | 1137 | cmd->result = DID_RESET << 16; |
edd16368 SC |
1138 | dev_warn(&h->pdev->dev, "cp %p aborted do to an unsolicited " |
1139 | "abort\n", cp); | |
1140 | break; | |
1141 | case CMD_TIMEOUT: | |
1142 | cmd->result = DID_TIME_OUT << 16; | |
1143 | dev_warn(&h->pdev->dev, "cp %p timedout\n", cp); | |
1144 | break; | |
1145 | default: | |
1146 | cmd->result = DID_ERROR << 16; | |
1147 | dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n", | |
1148 | cp, ei->CommandStatus); | |
1149 | } | |
1150 | cmd->scsi_done(cmd); | |
1151 | cmd_free(h, cp); | |
1152 | } | |
1153 | ||
1154 | static int hpsa_scsi_detect(struct ctlr_info *h) | |
1155 | { | |
1156 | struct Scsi_Host *sh; | |
1157 | int error; | |
1158 | ||
1159 | sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h)); | |
1160 | if (sh == NULL) | |
1161 | goto fail; | |
1162 | ||
1163 | sh->io_port = 0; | |
1164 | sh->n_io_port = 0; | |
1165 | sh->this_id = -1; | |
1166 | sh->max_channel = 3; | |
1167 | sh->max_cmd_len = MAX_COMMAND_SIZE; | |
1168 | sh->max_lun = HPSA_MAX_LUN; | |
1169 | sh->max_id = HPSA_MAX_LUN; | |
303932fd DB |
1170 | sh->can_queue = h->nr_cmds; |
1171 | sh->cmd_per_lun = h->nr_cmds; | |
edd16368 SC |
1172 | h->scsi_host = sh; |
1173 | sh->hostdata[0] = (unsigned long) h; | |
303932fd | 1174 | sh->irq = h->intr[PERF_MODE_INT]; |
edd16368 SC |
1175 | sh->unique_id = sh->irq; |
1176 | error = scsi_add_host(sh, &h->pdev->dev); | |
1177 | if (error) | |
1178 | goto fail_host_put; | |
1179 | scsi_scan_host(sh); | |
1180 | return 0; | |
1181 | ||
1182 | fail_host_put: | |
1183 | dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_add_host" | |
1184 | " failed for controller %d\n", h->ctlr); | |
1185 | scsi_host_put(sh); | |
ecd9aad4 | 1186 | return error; |
edd16368 SC |
1187 | fail: |
1188 | dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_host_alloc" | |
1189 | " failed for controller %d\n", h->ctlr); | |
ecd9aad4 | 1190 | return -ENOMEM; |
edd16368 SC |
1191 | } |
1192 | ||
1193 | static void hpsa_pci_unmap(struct pci_dev *pdev, | |
1194 | struct CommandList *c, int sg_used, int data_direction) | |
1195 | { | |
1196 | int i; | |
1197 | union u64bit addr64; | |
1198 | ||
1199 | for (i = 0; i < sg_used; i++) { | |
1200 | addr64.val32.lower = c->SG[i].Addr.lower; | |
1201 | addr64.val32.upper = c->SG[i].Addr.upper; | |
1202 | pci_unmap_single(pdev, (dma_addr_t) addr64.val, c->SG[i].Len, | |
1203 | data_direction); | |
1204 | } | |
1205 | } | |
1206 | ||
1207 | static void hpsa_map_one(struct pci_dev *pdev, | |
1208 | struct CommandList *cp, | |
1209 | unsigned char *buf, | |
1210 | size_t buflen, | |
1211 | int data_direction) | |
1212 | { | |
01a02ffc | 1213 | u64 addr64; |
edd16368 SC |
1214 | |
1215 | if (buflen == 0 || data_direction == PCI_DMA_NONE) { | |
1216 | cp->Header.SGList = 0; | |
1217 | cp->Header.SGTotal = 0; | |
1218 | return; | |
1219 | } | |
1220 | ||
01a02ffc | 1221 | addr64 = (u64) pci_map_single(pdev, buf, buflen, data_direction); |
edd16368 | 1222 | cp->SG[0].Addr.lower = |
01a02ffc | 1223 | (u32) (addr64 & (u64) 0x00000000FFFFFFFF); |
edd16368 | 1224 | cp->SG[0].Addr.upper = |
01a02ffc | 1225 | (u32) ((addr64 >> 32) & (u64) 0x00000000FFFFFFFF); |
edd16368 | 1226 | cp->SG[0].Len = buflen; |
01a02ffc SC |
1227 | cp->Header.SGList = (u8) 1; /* no. SGs contig in this cmd */ |
1228 | cp->Header.SGTotal = (u16) 1; /* total sgs in this cmd list */ | |
edd16368 SC |
1229 | } |
1230 | ||
1231 | static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h, | |
1232 | struct CommandList *c) | |
1233 | { | |
1234 | DECLARE_COMPLETION_ONSTACK(wait); | |
1235 | ||
1236 | c->waiting = &wait; | |
1237 | enqueue_cmd_and_start_io(h, c); | |
1238 | wait_for_completion(&wait); | |
1239 | } | |
1240 | ||
1241 | static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h, | |
1242 | struct CommandList *c, int data_direction) | |
1243 | { | |
1244 | int retry_count = 0; | |
1245 | ||
1246 | do { | |
1247 | memset(c->err_info, 0, sizeof(c->err_info)); | |
1248 | hpsa_scsi_do_simple_cmd_core(h, c); | |
1249 | retry_count++; | |
1250 | } while (check_for_unit_attention(h, c) && retry_count <= 3); | |
1251 | hpsa_pci_unmap(h->pdev, c, 1, data_direction); | |
1252 | } | |
1253 | ||
1254 | static void hpsa_scsi_interpret_error(struct CommandList *cp) | |
1255 | { | |
1256 | struct ErrorInfo *ei; | |
1257 | struct device *d = &cp->h->pdev->dev; | |
1258 | ||
1259 | ei = cp->err_info; | |
1260 | switch (ei->CommandStatus) { | |
1261 | case CMD_TARGET_STATUS: | |
1262 | dev_warn(d, "cmd %p has completed with errors\n", cp); | |
1263 | dev_warn(d, "cmd %p has SCSI Status = %x\n", cp, | |
1264 | ei->ScsiStatus); | |
1265 | if (ei->ScsiStatus == 0) | |
1266 | dev_warn(d, "SCSI status is abnormally zero. " | |
1267 | "(probably indicates selection timeout " | |
1268 | "reported incorrectly due to a known " | |
1269 | "firmware bug, circa July, 2001.)\n"); | |
1270 | break; | |
1271 | case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ | |
1272 | dev_info(d, "UNDERRUN\n"); | |
1273 | break; | |
1274 | case CMD_DATA_OVERRUN: | |
1275 | dev_warn(d, "cp %p has completed with data overrun\n", cp); | |
1276 | break; | |
1277 | case CMD_INVALID: { | |
1278 | /* controller unfortunately reports SCSI passthru's | |
1279 | * to non-existent targets as invalid commands. | |
1280 | */ | |
1281 | dev_warn(d, "cp %p is reported invalid (probably means " | |
1282 | "target device no longer present)\n", cp); | |
1283 | /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0); | |
1284 | print_cmd(cp); */ | |
1285 | } | |
1286 | break; | |
1287 | case CMD_PROTOCOL_ERR: | |
1288 | dev_warn(d, "cp %p has protocol error \n", cp); | |
1289 | break; | |
1290 | case CMD_HARDWARE_ERR: | |
1291 | /* cmd->result = DID_ERROR << 16; */ | |
1292 | dev_warn(d, "cp %p had hardware error\n", cp); | |
1293 | break; | |
1294 | case CMD_CONNECTION_LOST: | |
1295 | dev_warn(d, "cp %p had connection lost\n", cp); | |
1296 | break; | |
1297 | case CMD_ABORTED: | |
1298 | dev_warn(d, "cp %p was aborted\n", cp); | |
1299 | break; | |
1300 | case CMD_ABORT_FAILED: | |
1301 | dev_warn(d, "cp %p reports abort failed\n", cp); | |
1302 | break; | |
1303 | case CMD_UNSOLICITED_ABORT: | |
1304 | dev_warn(d, "cp %p aborted due to an unsolicited abort\n", cp); | |
1305 | break; | |
1306 | case CMD_TIMEOUT: | |
1307 | dev_warn(d, "cp %p timed out\n", cp); | |
1308 | break; | |
1309 | default: | |
1310 | dev_warn(d, "cp %p returned unknown status %x\n", cp, | |
1311 | ei->CommandStatus); | |
1312 | } | |
1313 | } | |
1314 | ||
1315 | static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr, | |
1316 | unsigned char page, unsigned char *buf, | |
1317 | unsigned char bufsize) | |
1318 | { | |
1319 | int rc = IO_OK; | |
1320 | struct CommandList *c; | |
1321 | struct ErrorInfo *ei; | |
1322 | ||
1323 | c = cmd_special_alloc(h); | |
1324 | ||
1325 | if (c == NULL) { /* trouble... */ | |
1326 | dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); | |
ecd9aad4 | 1327 | return -ENOMEM; |
edd16368 SC |
1328 | } |
1329 | ||
1330 | fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, page, scsi3addr, TYPE_CMD); | |
1331 | hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); | |
1332 | ei = c->err_info; | |
1333 | if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { | |
1334 | hpsa_scsi_interpret_error(c); | |
1335 | rc = -1; | |
1336 | } | |
1337 | cmd_special_free(h, c); | |
1338 | return rc; | |
1339 | } | |
1340 | ||
1341 | static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr) | |
1342 | { | |
1343 | int rc = IO_OK; | |
1344 | struct CommandList *c; | |
1345 | struct ErrorInfo *ei; | |
1346 | ||
1347 | c = cmd_special_alloc(h); | |
1348 | ||
1349 | if (c == NULL) { /* trouble... */ | |
1350 | dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); | |
1351 | return -1; | |
1352 | } | |
1353 | ||
1354 | fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, scsi3addr, TYPE_MSG); | |
1355 | hpsa_scsi_do_simple_cmd_core(h, c); | |
1356 | /* no unmap needed here because no data xfer. */ | |
1357 | ||
1358 | ei = c->err_info; | |
1359 | if (ei->CommandStatus != 0) { | |
1360 | hpsa_scsi_interpret_error(c); | |
1361 | rc = -1; | |
1362 | } | |
1363 | cmd_special_free(h, c); | |
1364 | return rc; | |
1365 | } | |
1366 | ||
1367 | static void hpsa_get_raid_level(struct ctlr_info *h, | |
1368 | unsigned char *scsi3addr, unsigned char *raid_level) | |
1369 | { | |
1370 | int rc; | |
1371 | unsigned char *buf; | |
1372 | ||
1373 | *raid_level = RAID_UNKNOWN; | |
1374 | buf = kzalloc(64, GFP_KERNEL); | |
1375 | if (!buf) | |
1376 | return; | |
1377 | rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0xC1, buf, 64); | |
1378 | if (rc == 0) | |
1379 | *raid_level = buf[8]; | |
1380 | if (*raid_level > RAID_UNKNOWN) | |
1381 | *raid_level = RAID_UNKNOWN; | |
1382 | kfree(buf); | |
1383 | return; | |
1384 | } | |
1385 | ||
1386 | /* Get the device id from inquiry page 0x83 */ | |
1387 | static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr, | |
1388 | unsigned char *device_id, int buflen) | |
1389 | { | |
1390 | int rc; | |
1391 | unsigned char *buf; | |
1392 | ||
1393 | if (buflen > 16) | |
1394 | buflen = 16; | |
1395 | buf = kzalloc(64, GFP_KERNEL); | |
1396 | if (!buf) | |
1397 | return -1; | |
1398 | rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0x83, buf, 64); | |
1399 | if (rc == 0) | |
1400 | memcpy(device_id, &buf[8], buflen); | |
1401 | kfree(buf); | |
1402 | return rc != 0; | |
1403 | } | |
1404 | ||
1405 | static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical, | |
1406 | struct ReportLUNdata *buf, int bufsize, | |
1407 | int extended_response) | |
1408 | { | |
1409 | int rc = IO_OK; | |
1410 | struct CommandList *c; | |
1411 | unsigned char scsi3addr[8]; | |
1412 | struct ErrorInfo *ei; | |
1413 | ||
1414 | c = cmd_special_alloc(h); | |
1415 | if (c == NULL) { /* trouble... */ | |
1416 | dev_err(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); | |
1417 | return -1; | |
1418 | } | |
e89c0ae7 SC |
1419 | /* address the controller */ |
1420 | memset(scsi3addr, 0, sizeof(scsi3addr)); | |
edd16368 SC |
1421 | fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h, |
1422 | buf, bufsize, 0, scsi3addr, TYPE_CMD); | |
1423 | if (extended_response) | |
1424 | c->Request.CDB[1] = extended_response; | |
1425 | hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); | |
1426 | ei = c->err_info; | |
1427 | if (ei->CommandStatus != 0 && | |
1428 | ei->CommandStatus != CMD_DATA_UNDERRUN) { | |
1429 | hpsa_scsi_interpret_error(c); | |
1430 | rc = -1; | |
1431 | } | |
1432 | cmd_special_free(h, c); | |
1433 | return rc; | |
1434 | } | |
1435 | ||
1436 | static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h, | |
1437 | struct ReportLUNdata *buf, | |
1438 | int bufsize, int extended_response) | |
1439 | { | |
1440 | return hpsa_scsi_do_report_luns(h, 0, buf, bufsize, extended_response); | |
1441 | } | |
1442 | ||
1443 | static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h, | |
1444 | struct ReportLUNdata *buf, int bufsize) | |
1445 | { | |
1446 | return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0); | |
1447 | } | |
1448 | ||
1449 | static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device, | |
1450 | int bus, int target, int lun) | |
1451 | { | |
1452 | device->bus = bus; | |
1453 | device->target = target; | |
1454 | device->lun = lun; | |
1455 | } | |
1456 | ||
1457 | static int hpsa_update_device_info(struct ctlr_info *h, | |
1458 | unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device) | |
1459 | { | |
1460 | #define OBDR_TAPE_INQ_SIZE 49 | |
ea6d3bc3 | 1461 | unsigned char *inq_buff; |
edd16368 | 1462 | |
ea6d3bc3 | 1463 | inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); |
edd16368 SC |
1464 | if (!inq_buff) |
1465 | goto bail_out; | |
1466 | ||
edd16368 SC |
1467 | /* Do an inquiry to the device to see what it is. */ |
1468 | if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff, | |
1469 | (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) { | |
1470 | /* Inquiry failed (msg printed already) */ | |
1471 | dev_err(&h->pdev->dev, | |
1472 | "hpsa_update_device_info: inquiry failed\n"); | |
1473 | goto bail_out; | |
1474 | } | |
1475 | ||
1476 | /* As a side effect, record the firmware version number | |
1477 | * if we happen to be talking to the RAID controller. | |
1478 | */ | |
1479 | if (is_hba_lunid(scsi3addr)) | |
1480 | memcpy(h->firm_ver, &inq_buff[32], 4); | |
1481 | ||
1482 | this_device->devtype = (inq_buff[0] & 0x1f); | |
1483 | memcpy(this_device->scsi3addr, scsi3addr, 8); | |
1484 | memcpy(this_device->vendor, &inq_buff[8], | |
1485 | sizeof(this_device->vendor)); | |
1486 | memcpy(this_device->model, &inq_buff[16], | |
1487 | sizeof(this_device->model)); | |
1488 | memcpy(this_device->revision, &inq_buff[32], | |
1489 | sizeof(this_device->revision)); | |
1490 | memset(this_device->device_id, 0, | |
1491 | sizeof(this_device->device_id)); | |
1492 | hpsa_get_device_id(h, scsi3addr, this_device->device_id, | |
1493 | sizeof(this_device->device_id)); | |
1494 | ||
1495 | if (this_device->devtype == TYPE_DISK && | |
1496 | is_logical_dev_addr_mode(scsi3addr)) | |
1497 | hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level); | |
1498 | else | |
1499 | this_device->raid_level = RAID_UNKNOWN; | |
1500 | ||
1501 | kfree(inq_buff); | |
1502 | return 0; | |
1503 | ||
1504 | bail_out: | |
1505 | kfree(inq_buff); | |
1506 | return 1; | |
1507 | } | |
1508 | ||
1509 | static unsigned char *msa2xxx_model[] = { | |
1510 | "MSA2012", | |
1511 | "MSA2024", | |
1512 | "MSA2312", | |
1513 | "MSA2324", | |
1514 | NULL, | |
1515 | }; | |
1516 | ||
1517 | static int is_msa2xxx(struct ctlr_info *h, struct hpsa_scsi_dev_t *device) | |
1518 | { | |
1519 | int i; | |
1520 | ||
1521 | for (i = 0; msa2xxx_model[i]; i++) | |
1522 | if (strncmp(device->model, msa2xxx_model[i], | |
1523 | strlen(msa2xxx_model[i])) == 0) | |
1524 | return 1; | |
1525 | return 0; | |
1526 | } | |
1527 | ||
1528 | /* Helper function to assign bus, target, lun mapping of devices. | |
1529 | * Puts non-msa2xxx logical volumes on bus 0, msa2xxx logical | |
1530 | * volumes on bus 1, physical devices on bus 2. and the hba on bus 3. | |
1531 | * Logical drive target and lun are assigned at this time, but | |
1532 | * physical device lun and target assignment are deferred (assigned | |
1533 | * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.) | |
1534 | */ | |
1535 | static void figure_bus_target_lun(struct ctlr_info *h, | |
01a02ffc | 1536 | u8 *lunaddrbytes, int *bus, int *target, int *lun, |
edd16368 SC |
1537 | struct hpsa_scsi_dev_t *device) |
1538 | { | |
01a02ffc | 1539 | u32 lunid; |
edd16368 SC |
1540 | |
1541 | if (is_logical_dev_addr_mode(lunaddrbytes)) { | |
1542 | /* logical device */ | |
339b2b14 SC |
1543 | if (unlikely(is_scsi_rev_5(h))) { |
1544 | /* p1210m, logical drives lun assignments | |
1545 | * match SCSI REPORT LUNS data. | |
1546 | */ | |
1547 | lunid = le32_to_cpu(*((__le32 *) lunaddrbytes)); | |
edd16368 | 1548 | *bus = 0; |
339b2b14 SC |
1549 | *target = 0; |
1550 | *lun = (lunid & 0x3fff) + 1; | |
1551 | } else { | |
1552 | /* not p1210m... */ | |
1553 | lunid = le32_to_cpu(*((__le32 *) lunaddrbytes)); | |
1554 | if (is_msa2xxx(h, device)) { | |
1555 | /* msa2xxx way, put logicals on bus 1 | |
1556 | * and match target/lun numbers box | |
1557 | * reports. | |
1558 | */ | |
1559 | *bus = 1; | |
1560 | *target = (lunid >> 16) & 0x3fff; | |
1561 | *lun = lunid & 0x00ff; | |
1562 | } else { | |
1563 | /* Traditional smart array way. */ | |
1564 | *bus = 0; | |
1565 | *lun = 0; | |
1566 | *target = lunid & 0x3fff; | |
1567 | } | |
edd16368 SC |
1568 | } |
1569 | } else { | |
1570 | /* physical device */ | |
1571 | if (is_hba_lunid(lunaddrbytes)) | |
339b2b14 SC |
1572 | if (unlikely(is_scsi_rev_5(h))) { |
1573 | *bus = 0; /* put p1210m ctlr at 0,0,0 */ | |
1574 | *target = 0; | |
1575 | *lun = 0; | |
1576 | return; | |
1577 | } else | |
1578 | *bus = 3; /* traditional smartarray */ | |
edd16368 | 1579 | else |
339b2b14 | 1580 | *bus = 2; /* physical disk */ |
edd16368 SC |
1581 | *target = -1; |
1582 | *lun = -1; /* we will fill these in later. */ | |
1583 | } | |
1584 | } | |
1585 | ||
1586 | /* | |
1587 | * If there is no lun 0 on a target, linux won't find any devices. | |
1588 | * For the MSA2xxx boxes, we have to manually detect the enclosure | |
1589 | * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report | |
1590 | * it for some reason. *tmpdevice is the target we're adding, | |
1591 | * this_device is a pointer into the current element of currentsd[] | |
1592 | * that we're building up in update_scsi_devices(), below. | |
1593 | * lunzerobits is a bitmap that tracks which targets already have a | |
1594 | * lun 0 assigned. | |
1595 | * Returns 1 if an enclosure was added, 0 if not. | |
1596 | */ | |
1597 | static int add_msa2xxx_enclosure_device(struct ctlr_info *h, | |
1598 | struct hpsa_scsi_dev_t *tmpdevice, | |
01a02ffc | 1599 | struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes, |
edd16368 SC |
1600 | int bus, int target, int lun, unsigned long lunzerobits[], |
1601 | int *nmsa2xxx_enclosures) | |
1602 | { | |
1603 | unsigned char scsi3addr[8]; | |
1604 | ||
1605 | if (test_bit(target, lunzerobits)) | |
1606 | return 0; /* There is already a lun 0 on this target. */ | |
1607 | ||
1608 | if (!is_logical_dev_addr_mode(lunaddrbytes)) | |
1609 | return 0; /* It's the logical targets that may lack lun 0. */ | |
1610 | ||
1611 | if (!is_msa2xxx(h, tmpdevice)) | |
1612 | return 0; /* It's only the MSA2xxx that have this problem. */ | |
1613 | ||
1614 | if (lun == 0) /* if lun is 0, then obviously we have a lun 0. */ | |
1615 | return 0; | |
1616 | ||
1617 | if (is_hba_lunid(scsi3addr)) | |
1618 | return 0; /* Don't add the RAID controller here. */ | |
1619 | ||
339b2b14 SC |
1620 | if (is_scsi_rev_5(h)) |
1621 | return 0; /* p1210m doesn't need to do this. */ | |
1622 | ||
edd16368 SC |
1623 | #define MAX_MSA2XXX_ENCLOSURES 32 |
1624 | if (*nmsa2xxx_enclosures >= MAX_MSA2XXX_ENCLOSURES) { | |
1625 | dev_warn(&h->pdev->dev, "Maximum number of MSA2XXX " | |
1626 | "enclosures exceeded. Check your hardware " | |
1627 | "configuration."); | |
1628 | return 0; | |
1629 | } | |
1630 | ||
1631 | memset(scsi3addr, 0, 8); | |
1632 | scsi3addr[3] = target; | |
1633 | if (hpsa_update_device_info(h, scsi3addr, this_device)) | |
1634 | return 0; | |
1635 | (*nmsa2xxx_enclosures)++; | |
1636 | hpsa_set_bus_target_lun(this_device, bus, target, 0); | |
1637 | set_bit(target, lunzerobits); | |
1638 | return 1; | |
1639 | } | |
1640 | ||
1641 | /* | |
1642 | * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev, | |
1643 | * logdev. The number of luns in physdev and logdev are returned in | |
1644 | * *nphysicals and *nlogicals, respectively. | |
1645 | * Returns 0 on success, -1 otherwise. | |
1646 | */ | |
1647 | static int hpsa_gather_lun_info(struct ctlr_info *h, | |
1648 | int reportlunsize, | |
01a02ffc SC |
1649 | struct ReportLUNdata *physdev, u32 *nphysicals, |
1650 | struct ReportLUNdata *logdev, u32 *nlogicals) | |
edd16368 SC |
1651 | { |
1652 | if (hpsa_scsi_do_report_phys_luns(h, physdev, reportlunsize, 0)) { | |
1653 | dev_err(&h->pdev->dev, "report physical LUNs failed.\n"); | |
1654 | return -1; | |
1655 | } | |
6df1e954 | 1656 | *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 8; |
edd16368 SC |
1657 | if (*nphysicals > HPSA_MAX_PHYS_LUN) { |
1658 | dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded." | |
1659 | " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, | |
1660 | *nphysicals - HPSA_MAX_PHYS_LUN); | |
1661 | *nphysicals = HPSA_MAX_PHYS_LUN; | |
1662 | } | |
1663 | if (hpsa_scsi_do_report_log_luns(h, logdev, reportlunsize)) { | |
1664 | dev_err(&h->pdev->dev, "report logical LUNs failed.\n"); | |
1665 | return -1; | |
1666 | } | |
6df1e954 | 1667 | *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8; |
edd16368 SC |
1668 | /* Reject Logicals in excess of our max capability. */ |
1669 | if (*nlogicals > HPSA_MAX_LUN) { | |
1670 | dev_warn(&h->pdev->dev, | |
1671 | "maximum logical LUNs (%d) exceeded. " | |
1672 | "%d LUNs ignored.\n", HPSA_MAX_LUN, | |
1673 | *nlogicals - HPSA_MAX_LUN); | |
1674 | *nlogicals = HPSA_MAX_LUN; | |
1675 | } | |
1676 | if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) { | |
1677 | dev_warn(&h->pdev->dev, | |
1678 | "maximum logical + physical LUNs (%d) exceeded. " | |
1679 | "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, | |
1680 | *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN); | |
1681 | *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals; | |
1682 | } | |
1683 | return 0; | |
1684 | } | |
1685 | ||
339b2b14 SC |
1686 | u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position, int i, |
1687 | int nphysicals, int nlogicals, struct ReportLUNdata *physdev_list, | |
1688 | struct ReportLUNdata *logdev_list) | |
1689 | { | |
1690 | /* Helper function, figure out where the LUN ID info is coming from | |
1691 | * given index i, lists of physical and logical devices, where in | |
1692 | * the list the raid controller is supposed to appear (first or last) | |
1693 | */ | |
1694 | ||
1695 | int logicals_start = nphysicals + (raid_ctlr_position == 0); | |
1696 | int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0); | |
1697 | ||
1698 | if (i == raid_ctlr_position) | |
1699 | return RAID_CTLR_LUNID; | |
1700 | ||
1701 | if (i < logicals_start) | |
1702 | return &physdev_list->LUN[i - (raid_ctlr_position == 0)][0]; | |
1703 | ||
1704 | if (i < last_device) | |
1705 | return &logdev_list->LUN[i - nphysicals - | |
1706 | (raid_ctlr_position == 0)][0]; | |
1707 | BUG(); | |
1708 | return NULL; | |
1709 | } | |
1710 | ||
edd16368 SC |
1711 | static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno) |
1712 | { | |
1713 | /* the idea here is we could get notified | |
1714 | * that some devices have changed, so we do a report | |
1715 | * physical luns and report logical luns cmd, and adjust | |
1716 | * our list of devices accordingly. | |
1717 | * | |
1718 | * The scsi3addr's of devices won't change so long as the | |
1719 | * adapter is not reset. That means we can rescan and | |
1720 | * tell which devices we already know about, vs. new | |
1721 | * devices, vs. disappearing devices. | |
1722 | */ | |
1723 | struct ReportLUNdata *physdev_list = NULL; | |
1724 | struct ReportLUNdata *logdev_list = NULL; | |
1725 | unsigned char *inq_buff = NULL; | |
01a02ffc SC |
1726 | u32 nphysicals = 0; |
1727 | u32 nlogicals = 0; | |
1728 | u32 ndev_allocated = 0; | |
edd16368 SC |
1729 | struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice; |
1730 | int ncurrent = 0; | |
1731 | int reportlunsize = sizeof(*physdev_list) + HPSA_MAX_PHYS_LUN * 8; | |
1732 | int i, nmsa2xxx_enclosures, ndevs_to_allocate; | |
1733 | int bus, target, lun; | |
339b2b14 | 1734 | int raid_ctlr_position; |
edd16368 SC |
1735 | DECLARE_BITMAP(lunzerobits, HPSA_MAX_TARGETS_PER_CTLR); |
1736 | ||
1737 | currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_SCSI_DEVS_PER_HBA, | |
1738 | GFP_KERNEL); | |
1739 | physdev_list = kzalloc(reportlunsize, GFP_KERNEL); | |
1740 | logdev_list = kzalloc(reportlunsize, GFP_KERNEL); | |
1741 | inq_buff = kmalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); | |
1742 | tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL); | |
1743 | ||
1744 | if (!currentsd || !physdev_list || !logdev_list || | |
1745 | !inq_buff || !tmpdevice) { | |
1746 | dev_err(&h->pdev->dev, "out of memory\n"); | |
1747 | goto out; | |
1748 | } | |
1749 | memset(lunzerobits, 0, sizeof(lunzerobits)); | |
1750 | ||
1751 | if (hpsa_gather_lun_info(h, reportlunsize, physdev_list, &nphysicals, | |
1752 | logdev_list, &nlogicals)) | |
1753 | goto out; | |
1754 | ||
1755 | /* We might see up to 32 MSA2xxx enclosures, actually 8 of them | |
1756 | * but each of them 4 times through different paths. The plus 1 | |
1757 | * is for the RAID controller. | |
1758 | */ | |
1759 | ndevs_to_allocate = nphysicals + nlogicals + MAX_MSA2XXX_ENCLOSURES + 1; | |
1760 | ||
1761 | /* Allocate the per device structures */ | |
1762 | for (i = 0; i < ndevs_to_allocate; i++) { | |
1763 | currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL); | |
1764 | if (!currentsd[i]) { | |
1765 | dev_warn(&h->pdev->dev, "out of memory at %s:%d\n", | |
1766 | __FILE__, __LINE__); | |
1767 | goto out; | |
1768 | } | |
1769 | ndev_allocated++; | |
1770 | } | |
1771 | ||
339b2b14 SC |
1772 | if (unlikely(is_scsi_rev_5(h))) |
1773 | raid_ctlr_position = 0; | |
1774 | else | |
1775 | raid_ctlr_position = nphysicals + nlogicals; | |
1776 | ||
edd16368 SC |
1777 | /* adjust our table of devices */ |
1778 | nmsa2xxx_enclosures = 0; | |
1779 | for (i = 0; i < nphysicals + nlogicals + 1; i++) { | |
01a02ffc | 1780 | u8 *lunaddrbytes; |
edd16368 SC |
1781 | |
1782 | /* Figure out where the LUN ID info is coming from */ | |
339b2b14 SC |
1783 | lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position, |
1784 | i, nphysicals, nlogicals, physdev_list, logdev_list); | |
edd16368 | 1785 | /* skip masked physical devices. */ |
339b2b14 SC |
1786 | if (lunaddrbytes[3] & 0xC0 && |
1787 | i < nphysicals + (raid_ctlr_position == 0)) | |
edd16368 SC |
1788 | continue; |
1789 | ||
1790 | /* Get device type, vendor, model, device id */ | |
1791 | if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice)) | |
1792 | continue; /* skip it if we can't talk to it. */ | |
1793 | figure_bus_target_lun(h, lunaddrbytes, &bus, &target, &lun, | |
1794 | tmpdevice); | |
1795 | this_device = currentsd[ncurrent]; | |
1796 | ||
1797 | /* | |
1798 | * For the msa2xxx boxes, we have to insert a LUN 0 which | |
1799 | * doesn't show up in CCISS_REPORT_PHYSICAL data, but there | |
1800 | * is nonetheless an enclosure device there. We have to | |
1801 | * present that otherwise linux won't find anything if | |
1802 | * there is no lun 0. | |
1803 | */ | |
1804 | if (add_msa2xxx_enclosure_device(h, tmpdevice, this_device, | |
1805 | lunaddrbytes, bus, target, lun, lunzerobits, | |
1806 | &nmsa2xxx_enclosures)) { | |
1807 | ncurrent++; | |
1808 | this_device = currentsd[ncurrent]; | |
1809 | } | |
1810 | ||
1811 | *this_device = *tmpdevice; | |
1812 | hpsa_set_bus_target_lun(this_device, bus, target, lun); | |
1813 | ||
1814 | switch (this_device->devtype) { | |
1815 | case TYPE_ROM: { | |
1816 | /* We don't *really* support actual CD-ROM devices, | |
1817 | * just "One Button Disaster Recovery" tape drive | |
1818 | * which temporarily pretends to be a CD-ROM drive. | |
1819 | * So we check that the device is really an OBDR tape | |
1820 | * device by checking for "$DR-10" in bytes 43-48 of | |
1821 | * the inquiry data. | |
1822 | */ | |
1823 | char obdr_sig[7]; | |
1824 | #define OBDR_TAPE_SIG "$DR-10" | |
1825 | strncpy(obdr_sig, &inq_buff[43], 6); | |
1826 | obdr_sig[6] = '\0'; | |
1827 | if (strncmp(obdr_sig, OBDR_TAPE_SIG, 6) != 0) | |
1828 | /* Not OBDR device, ignore it. */ | |
1829 | break; | |
1830 | } | |
1831 | ncurrent++; | |
1832 | break; | |
1833 | case TYPE_DISK: | |
1834 | if (i < nphysicals) | |
1835 | break; | |
1836 | ncurrent++; | |
1837 | break; | |
1838 | case TYPE_TAPE: | |
1839 | case TYPE_MEDIUM_CHANGER: | |
1840 | ncurrent++; | |
1841 | break; | |
1842 | case TYPE_RAID: | |
1843 | /* Only present the Smartarray HBA as a RAID controller. | |
1844 | * If it's a RAID controller other than the HBA itself | |
1845 | * (an external RAID controller, MSA500 or similar) | |
1846 | * don't present it. | |
1847 | */ | |
1848 | if (!is_hba_lunid(lunaddrbytes)) | |
1849 | break; | |
1850 | ncurrent++; | |
1851 | break; | |
1852 | default: | |
1853 | break; | |
1854 | } | |
1855 | if (ncurrent >= HPSA_MAX_SCSI_DEVS_PER_HBA) | |
1856 | break; | |
1857 | } | |
1858 | adjust_hpsa_scsi_table(h, hostno, currentsd, ncurrent); | |
1859 | out: | |
1860 | kfree(tmpdevice); | |
1861 | for (i = 0; i < ndev_allocated; i++) | |
1862 | kfree(currentsd[i]); | |
1863 | kfree(currentsd); | |
1864 | kfree(inq_buff); | |
1865 | kfree(physdev_list); | |
1866 | kfree(logdev_list); | |
edd16368 SC |
1867 | } |
1868 | ||
1869 | /* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci | |
1870 | * dma mapping and fills in the scatter gather entries of the | |
1871 | * hpsa command, cp. | |
1872 | */ | |
1873 | static int hpsa_scatter_gather(struct pci_dev *pdev, | |
1874 | struct CommandList *cp, | |
1875 | struct scsi_cmnd *cmd) | |
1876 | { | |
1877 | unsigned int len; | |
1878 | struct scatterlist *sg; | |
01a02ffc | 1879 | u64 addr64; |
edd16368 SC |
1880 | int use_sg, i; |
1881 | ||
1882 | BUG_ON(scsi_sg_count(cmd) > MAXSGENTRIES); | |
1883 | ||
1884 | use_sg = scsi_dma_map(cmd); | |
1885 | if (use_sg < 0) | |
1886 | return use_sg; | |
1887 | ||
1888 | if (!use_sg) | |
1889 | goto sglist_finished; | |
1890 | ||
1891 | scsi_for_each_sg(cmd, sg, use_sg, i) { | |
01a02ffc | 1892 | addr64 = (u64) sg_dma_address(sg); |
edd16368 SC |
1893 | len = sg_dma_len(sg); |
1894 | cp->SG[i].Addr.lower = | |
01a02ffc | 1895 | (u32) (addr64 & (u64) 0x00000000FFFFFFFF); |
edd16368 | 1896 | cp->SG[i].Addr.upper = |
01a02ffc | 1897 | (u32) ((addr64 >> 32) & (u64) 0x00000000FFFFFFFF); |
edd16368 SC |
1898 | cp->SG[i].Len = len; |
1899 | cp->SG[i].Ext = 0; /* we are not chaining */ | |
1900 | } | |
1901 | ||
1902 | sglist_finished: | |
1903 | ||
01a02ffc SC |
1904 | cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */ |
1905 | cp->Header.SGTotal = (u16) use_sg; /* total sgs in this cmd list */ | |
edd16368 SC |
1906 | return 0; |
1907 | } | |
1908 | ||
1909 | ||
1910 | static int hpsa_scsi_queue_command(struct scsi_cmnd *cmd, | |
1911 | void (*done)(struct scsi_cmnd *)) | |
1912 | { | |
1913 | struct ctlr_info *h; | |
1914 | struct hpsa_scsi_dev_t *dev; | |
1915 | unsigned char scsi3addr[8]; | |
1916 | struct CommandList *c; | |
1917 | unsigned long flags; | |
1918 | ||
1919 | /* Get the ptr to our adapter structure out of cmd->host. */ | |
1920 | h = sdev_to_hba(cmd->device); | |
1921 | dev = cmd->device->hostdata; | |
1922 | if (!dev) { | |
1923 | cmd->result = DID_NO_CONNECT << 16; | |
1924 | done(cmd); | |
1925 | return 0; | |
1926 | } | |
1927 | memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr)); | |
1928 | ||
1929 | /* Need a lock as this is being allocated from the pool */ | |
1930 | spin_lock_irqsave(&h->lock, flags); | |
1931 | c = cmd_alloc(h); | |
1932 | spin_unlock_irqrestore(&h->lock, flags); | |
1933 | if (c == NULL) { /* trouble... */ | |
1934 | dev_err(&h->pdev->dev, "cmd_alloc returned NULL!\n"); | |
1935 | return SCSI_MLQUEUE_HOST_BUSY; | |
1936 | } | |
1937 | ||
1938 | /* Fill in the command list header */ | |
1939 | ||
1940 | cmd->scsi_done = done; /* save this for use by completion code */ | |
1941 | ||
1942 | /* save c in case we have to abort it */ | |
1943 | cmd->host_scribble = (unsigned char *) c; | |
1944 | ||
1945 | c->cmd_type = CMD_SCSI; | |
1946 | c->scsi_cmd = cmd; | |
1947 | c->Header.ReplyQueue = 0; /* unused in simple mode */ | |
1948 | memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8); | |
303932fd DB |
1949 | c->Header.Tag.lower = (c->cmdindex << DIRECT_LOOKUP_SHIFT); |
1950 | c->Header.Tag.lower |= DIRECT_LOOKUP_BIT; | |
edd16368 SC |
1951 | |
1952 | /* Fill in the request block... */ | |
1953 | ||
1954 | c->Request.Timeout = 0; | |
1955 | memset(c->Request.CDB, 0, sizeof(c->Request.CDB)); | |
1956 | BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB)); | |
1957 | c->Request.CDBLen = cmd->cmd_len; | |
1958 | memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len); | |
1959 | c->Request.Type.Type = TYPE_CMD; | |
1960 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1961 | switch (cmd->sc_data_direction) { | |
1962 | case DMA_TO_DEVICE: | |
1963 | c->Request.Type.Direction = XFER_WRITE; | |
1964 | break; | |
1965 | case DMA_FROM_DEVICE: | |
1966 | c->Request.Type.Direction = XFER_READ; | |
1967 | break; | |
1968 | case DMA_NONE: | |
1969 | c->Request.Type.Direction = XFER_NONE; | |
1970 | break; | |
1971 | case DMA_BIDIRECTIONAL: | |
1972 | /* This can happen if a buggy application does a scsi passthru | |
1973 | * and sets both inlen and outlen to non-zero. ( see | |
1974 | * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() ) | |
1975 | */ | |
1976 | ||
1977 | c->Request.Type.Direction = XFER_RSVD; | |
1978 | /* This is technically wrong, and hpsa controllers should | |
1979 | * reject it with CMD_INVALID, which is the most correct | |
1980 | * response, but non-fibre backends appear to let it | |
1981 | * slide by, and give the same results as if this field | |
1982 | * were set correctly. Either way is acceptable for | |
1983 | * our purposes here. | |
1984 | */ | |
1985 | ||
1986 | break; | |
1987 | ||
1988 | default: | |
1989 | dev_err(&h->pdev->dev, "unknown data direction: %d\n", | |
1990 | cmd->sc_data_direction); | |
1991 | BUG(); | |
1992 | break; | |
1993 | } | |
1994 | ||
1995 | if (hpsa_scatter_gather(h->pdev, c, cmd) < 0) { /* Fill SG list */ | |
1996 | cmd_free(h, c); | |
1997 | return SCSI_MLQUEUE_HOST_BUSY; | |
1998 | } | |
1999 | enqueue_cmd_and_start_io(h, c); | |
2000 | /* the cmd'll come back via intr handler in complete_scsi_command() */ | |
2001 | return 0; | |
2002 | } | |
2003 | ||
2004 | static void hpsa_unregister_scsi(struct ctlr_info *h) | |
2005 | { | |
2006 | /* we are being forcibly unloaded, and may not refuse. */ | |
2007 | scsi_remove_host(h->scsi_host); | |
2008 | scsi_host_put(h->scsi_host); | |
2009 | h->scsi_host = NULL; | |
2010 | } | |
2011 | ||
2012 | static int hpsa_register_scsi(struct ctlr_info *h) | |
2013 | { | |
2014 | int rc; | |
2015 | ||
2016 | hpsa_update_scsi_devices(h, -1); | |
2017 | rc = hpsa_scsi_detect(h); | |
2018 | if (rc != 0) | |
2019 | dev_err(&h->pdev->dev, "hpsa_register_scsi: failed" | |
2020 | " hpsa_scsi_detect(), rc is %d\n", rc); | |
2021 | return rc; | |
2022 | } | |
2023 | ||
2024 | static int wait_for_device_to_become_ready(struct ctlr_info *h, | |
2025 | unsigned char lunaddr[]) | |
2026 | { | |
2027 | int rc = 0; | |
2028 | int count = 0; | |
2029 | int waittime = 1; /* seconds */ | |
2030 | struct CommandList *c; | |
2031 | ||
2032 | c = cmd_special_alloc(h); | |
2033 | if (!c) { | |
2034 | dev_warn(&h->pdev->dev, "out of memory in " | |
2035 | "wait_for_device_to_become_ready.\n"); | |
2036 | return IO_ERROR; | |
2037 | } | |
2038 | ||
2039 | /* Send test unit ready until device ready, or give up. */ | |
2040 | while (count < HPSA_TUR_RETRY_LIMIT) { | |
2041 | ||
2042 | /* Wait for a bit. do this first, because if we send | |
2043 | * the TUR right away, the reset will just abort it. | |
2044 | */ | |
2045 | msleep(1000 * waittime); | |
2046 | count++; | |
2047 | ||
2048 | /* Increase wait time with each try, up to a point. */ | |
2049 | if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS) | |
2050 | waittime = waittime * 2; | |
2051 | ||
2052 | /* Send the Test Unit Ready */ | |
2053 | fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, lunaddr, TYPE_CMD); | |
2054 | hpsa_scsi_do_simple_cmd_core(h, c); | |
2055 | /* no unmap needed here because no data xfer. */ | |
2056 | ||
2057 | if (c->err_info->CommandStatus == CMD_SUCCESS) | |
2058 | break; | |
2059 | ||
2060 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && | |
2061 | c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION && | |
2062 | (c->err_info->SenseInfo[2] == NO_SENSE || | |
2063 | c->err_info->SenseInfo[2] == UNIT_ATTENTION)) | |
2064 | break; | |
2065 | ||
2066 | dev_warn(&h->pdev->dev, "waiting %d secs " | |
2067 | "for device to become ready.\n", waittime); | |
2068 | rc = 1; /* device not ready. */ | |
2069 | } | |
2070 | ||
2071 | if (rc) | |
2072 | dev_warn(&h->pdev->dev, "giving up on device.\n"); | |
2073 | else | |
2074 | dev_warn(&h->pdev->dev, "device is ready.\n"); | |
2075 | ||
2076 | cmd_special_free(h, c); | |
2077 | return rc; | |
2078 | } | |
2079 | ||
2080 | /* Need at least one of these error handlers to keep ../scsi/hosts.c from | |
2081 | * complaining. Doing a host- or bus-reset can't do anything good here. | |
2082 | */ | |
2083 | static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) | |
2084 | { | |
2085 | int rc; | |
2086 | struct ctlr_info *h; | |
2087 | struct hpsa_scsi_dev_t *dev; | |
2088 | ||
2089 | /* find the controller to which the command to be aborted was sent */ | |
2090 | h = sdev_to_hba(scsicmd->device); | |
2091 | if (h == NULL) /* paranoia */ | |
2092 | return FAILED; | |
2093 | dev_warn(&h->pdev->dev, "resetting drive\n"); | |
2094 | ||
2095 | dev = scsicmd->device->hostdata; | |
2096 | if (!dev) { | |
2097 | dev_err(&h->pdev->dev, "hpsa_eh_device_reset_handler: " | |
2098 | "device lookup failed.\n"); | |
2099 | return FAILED; | |
2100 | } | |
2101 | /* send a reset to the SCSI LUN which the command was sent to */ | |
2102 | rc = hpsa_send_reset(h, dev->scsi3addr); | |
2103 | if (rc == 0 && wait_for_device_to_become_ready(h, dev->scsi3addr) == 0) | |
2104 | return SUCCESS; | |
2105 | ||
2106 | dev_warn(&h->pdev->dev, "resetting device failed.\n"); | |
2107 | return FAILED; | |
2108 | } | |
2109 | ||
2110 | /* | |
2111 | * For operations that cannot sleep, a command block is allocated at init, | |
2112 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track | |
2113 | * which ones are free or in use. Lock must be held when calling this. | |
2114 | * cmd_free() is the complement. | |
2115 | */ | |
2116 | static struct CommandList *cmd_alloc(struct ctlr_info *h) | |
2117 | { | |
2118 | struct CommandList *c; | |
2119 | int i; | |
2120 | union u64bit temp64; | |
2121 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
2122 | ||
2123 | do { | |
2124 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); | |
2125 | if (i == h->nr_cmds) | |
2126 | return NULL; | |
2127 | } while (test_and_set_bit | |
2128 | (i & (BITS_PER_LONG - 1), | |
2129 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
2130 | c = h->cmd_pool + i; | |
2131 | memset(c, 0, sizeof(*c)); | |
2132 | cmd_dma_handle = h->cmd_pool_dhandle | |
2133 | + i * sizeof(*c); | |
2134 | c->err_info = h->errinfo_pool + i; | |
2135 | memset(c->err_info, 0, sizeof(*c->err_info)); | |
2136 | err_dma_handle = h->errinfo_pool_dhandle | |
2137 | + i * sizeof(*c->err_info); | |
2138 | h->nr_allocs++; | |
2139 | ||
2140 | c->cmdindex = i; | |
2141 | ||
2142 | INIT_HLIST_NODE(&c->list); | |
01a02ffc SC |
2143 | c->busaddr = (u32) cmd_dma_handle; |
2144 | temp64.val = (u64) err_dma_handle; | |
edd16368 SC |
2145 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
2146 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
2147 | c->ErrDesc.Len = sizeof(*c->err_info); | |
2148 | ||
2149 | c->h = h; | |
2150 | return c; | |
2151 | } | |
2152 | ||
2153 | /* For operations that can wait for kmalloc to possibly sleep, | |
2154 | * this routine can be called. Lock need not be held to call | |
2155 | * cmd_special_alloc. cmd_special_free() is the complement. | |
2156 | */ | |
2157 | static struct CommandList *cmd_special_alloc(struct ctlr_info *h) | |
2158 | { | |
2159 | struct CommandList *c; | |
2160 | union u64bit temp64; | |
2161 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
2162 | ||
2163 | c = pci_alloc_consistent(h->pdev, sizeof(*c), &cmd_dma_handle); | |
2164 | if (c == NULL) | |
2165 | return NULL; | |
2166 | memset(c, 0, sizeof(*c)); | |
2167 | ||
2168 | c->cmdindex = -1; | |
2169 | ||
2170 | c->err_info = pci_alloc_consistent(h->pdev, sizeof(*c->err_info), | |
2171 | &err_dma_handle); | |
2172 | ||
2173 | if (c->err_info == NULL) { | |
2174 | pci_free_consistent(h->pdev, | |
2175 | sizeof(*c), c, cmd_dma_handle); | |
2176 | return NULL; | |
2177 | } | |
2178 | memset(c->err_info, 0, sizeof(*c->err_info)); | |
2179 | ||
2180 | INIT_HLIST_NODE(&c->list); | |
01a02ffc SC |
2181 | c->busaddr = (u32) cmd_dma_handle; |
2182 | temp64.val = (u64) err_dma_handle; | |
edd16368 SC |
2183 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
2184 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
2185 | c->ErrDesc.Len = sizeof(*c->err_info); | |
2186 | ||
2187 | c->h = h; | |
2188 | return c; | |
2189 | } | |
2190 | ||
2191 | static void cmd_free(struct ctlr_info *h, struct CommandList *c) | |
2192 | { | |
2193 | int i; | |
2194 | ||
2195 | i = c - h->cmd_pool; | |
2196 | clear_bit(i & (BITS_PER_LONG - 1), | |
2197 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
2198 | h->nr_frees++; | |
2199 | } | |
2200 | ||
2201 | static void cmd_special_free(struct ctlr_info *h, struct CommandList *c) | |
2202 | { | |
2203 | union u64bit temp64; | |
2204 | ||
2205 | temp64.val32.lower = c->ErrDesc.Addr.lower; | |
2206 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
2207 | pci_free_consistent(h->pdev, sizeof(*c->err_info), | |
2208 | c->err_info, (dma_addr_t) temp64.val); | |
2209 | pci_free_consistent(h->pdev, sizeof(*c), | |
2210 | c, (dma_addr_t) c->busaddr); | |
2211 | } | |
2212 | ||
2213 | #ifdef CONFIG_COMPAT | |
2214 | ||
2215 | static int do_ioctl(struct scsi_device *dev, int cmd, void *arg) | |
2216 | { | |
2217 | int ret; | |
2218 | ||
2219 | lock_kernel(); | |
2220 | ret = hpsa_ioctl(dev, cmd, arg); | |
2221 | unlock_kernel(); | |
2222 | return ret; | |
2223 | } | |
2224 | ||
2225 | static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, void *arg); | |
2226 | static int hpsa_ioctl32_big_passthru(struct scsi_device *dev, | |
2227 | int cmd, void *arg); | |
2228 | ||
2229 | static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg) | |
2230 | { | |
2231 | switch (cmd) { | |
2232 | case CCISS_GETPCIINFO: | |
2233 | case CCISS_GETINTINFO: | |
2234 | case CCISS_SETINTINFO: | |
2235 | case CCISS_GETNODENAME: | |
2236 | case CCISS_SETNODENAME: | |
2237 | case CCISS_GETHEARTBEAT: | |
2238 | case CCISS_GETBUSTYPES: | |
2239 | case CCISS_GETFIRMVER: | |
2240 | case CCISS_GETDRIVVER: | |
2241 | case CCISS_REVALIDVOLS: | |
2242 | case CCISS_DEREGDISK: | |
2243 | case CCISS_REGNEWDISK: | |
2244 | case CCISS_REGNEWD: | |
2245 | case CCISS_RESCANDISK: | |
2246 | case CCISS_GETLUNINFO: | |
2247 | return do_ioctl(dev, cmd, arg); | |
2248 | ||
2249 | case CCISS_PASSTHRU32: | |
2250 | return hpsa_ioctl32_passthru(dev, cmd, arg); | |
2251 | case CCISS_BIG_PASSTHRU32: | |
2252 | return hpsa_ioctl32_big_passthru(dev, cmd, arg); | |
2253 | ||
2254 | default: | |
2255 | return -ENOIOCTLCMD; | |
2256 | } | |
2257 | } | |
2258 | ||
2259 | static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, void *arg) | |
2260 | { | |
2261 | IOCTL32_Command_struct __user *arg32 = | |
2262 | (IOCTL32_Command_struct __user *) arg; | |
2263 | IOCTL_Command_struct arg64; | |
2264 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
2265 | int err; | |
2266 | u32 cp; | |
2267 | ||
2268 | err = 0; | |
2269 | err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
2270 | sizeof(arg64.LUN_info)); | |
2271 | err |= copy_from_user(&arg64.Request, &arg32->Request, | |
2272 | sizeof(arg64.Request)); | |
2273 | err |= copy_from_user(&arg64.error_info, &arg32->error_info, | |
2274 | sizeof(arg64.error_info)); | |
2275 | err |= get_user(arg64.buf_size, &arg32->buf_size); | |
2276 | err |= get_user(cp, &arg32->buf); | |
2277 | arg64.buf = compat_ptr(cp); | |
2278 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
2279 | ||
2280 | if (err) | |
2281 | return -EFAULT; | |
2282 | ||
2283 | err = do_ioctl(dev, CCISS_PASSTHRU, (void *)p); | |
2284 | if (err) | |
2285 | return err; | |
2286 | err |= copy_in_user(&arg32->error_info, &p->error_info, | |
2287 | sizeof(arg32->error_info)); | |
2288 | if (err) | |
2289 | return -EFAULT; | |
2290 | return err; | |
2291 | } | |
2292 | ||
2293 | static int hpsa_ioctl32_big_passthru(struct scsi_device *dev, | |
2294 | int cmd, void *arg) | |
2295 | { | |
2296 | BIG_IOCTL32_Command_struct __user *arg32 = | |
2297 | (BIG_IOCTL32_Command_struct __user *) arg; | |
2298 | BIG_IOCTL_Command_struct arg64; | |
2299 | BIG_IOCTL_Command_struct __user *p = | |
2300 | compat_alloc_user_space(sizeof(arg64)); | |
2301 | int err; | |
2302 | u32 cp; | |
2303 | ||
2304 | err = 0; | |
2305 | err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
2306 | sizeof(arg64.LUN_info)); | |
2307 | err |= copy_from_user(&arg64.Request, &arg32->Request, | |
2308 | sizeof(arg64.Request)); | |
2309 | err |= copy_from_user(&arg64.error_info, &arg32->error_info, | |
2310 | sizeof(arg64.error_info)); | |
2311 | err |= get_user(arg64.buf_size, &arg32->buf_size); | |
2312 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
2313 | err |= get_user(cp, &arg32->buf); | |
2314 | arg64.buf = compat_ptr(cp); | |
2315 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
2316 | ||
2317 | if (err) | |
2318 | return -EFAULT; | |
2319 | ||
2320 | err = do_ioctl(dev, CCISS_BIG_PASSTHRU, (void *)p); | |
2321 | if (err) | |
2322 | return err; | |
2323 | err |= copy_in_user(&arg32->error_info, &p->error_info, | |
2324 | sizeof(arg32->error_info)); | |
2325 | if (err) | |
2326 | return -EFAULT; | |
2327 | return err; | |
2328 | } | |
2329 | #endif | |
2330 | ||
2331 | static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp) | |
2332 | { | |
2333 | struct hpsa_pci_info pciinfo; | |
2334 | ||
2335 | if (!argp) | |
2336 | return -EINVAL; | |
2337 | pciinfo.domain = pci_domain_nr(h->pdev->bus); | |
2338 | pciinfo.bus = h->pdev->bus->number; | |
2339 | pciinfo.dev_fn = h->pdev->devfn; | |
2340 | pciinfo.board_id = h->board_id; | |
2341 | if (copy_to_user(argp, &pciinfo, sizeof(pciinfo))) | |
2342 | return -EFAULT; | |
2343 | return 0; | |
2344 | } | |
2345 | ||
2346 | static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp) | |
2347 | { | |
2348 | DriverVer_type DriverVer; | |
2349 | unsigned char vmaj, vmin, vsubmin; | |
2350 | int rc; | |
2351 | ||
2352 | rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu", | |
2353 | &vmaj, &vmin, &vsubmin); | |
2354 | if (rc != 3) { | |
2355 | dev_info(&h->pdev->dev, "driver version string '%s' " | |
2356 | "unrecognized.", HPSA_DRIVER_VERSION); | |
2357 | vmaj = 0; | |
2358 | vmin = 0; | |
2359 | vsubmin = 0; | |
2360 | } | |
2361 | DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin; | |
2362 | if (!argp) | |
2363 | return -EINVAL; | |
2364 | if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type))) | |
2365 | return -EFAULT; | |
2366 | return 0; | |
2367 | } | |
2368 | ||
2369 | static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp) | |
2370 | { | |
2371 | IOCTL_Command_struct iocommand; | |
2372 | struct CommandList *c; | |
2373 | char *buff = NULL; | |
2374 | union u64bit temp64; | |
2375 | ||
2376 | if (!argp) | |
2377 | return -EINVAL; | |
2378 | if (!capable(CAP_SYS_RAWIO)) | |
2379 | return -EPERM; | |
2380 | if (copy_from_user(&iocommand, argp, sizeof(iocommand))) | |
2381 | return -EFAULT; | |
2382 | if ((iocommand.buf_size < 1) && | |
2383 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
2384 | return -EINVAL; | |
2385 | } | |
2386 | if (iocommand.buf_size > 0) { | |
2387 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
2388 | if (buff == NULL) | |
2389 | return -EFAULT; | |
2390 | } | |
2391 | if (iocommand.Request.Type.Direction == XFER_WRITE) { | |
2392 | /* Copy the data into the buffer we created */ | |
2393 | if (copy_from_user(buff, iocommand.buf, iocommand.buf_size)) { | |
2394 | kfree(buff); | |
2395 | return -EFAULT; | |
2396 | } | |
2397 | } else | |
2398 | memset(buff, 0, iocommand.buf_size); | |
2399 | c = cmd_special_alloc(h); | |
2400 | if (c == NULL) { | |
2401 | kfree(buff); | |
2402 | return -ENOMEM; | |
2403 | } | |
2404 | /* Fill in the command type */ | |
2405 | c->cmd_type = CMD_IOCTL_PEND; | |
2406 | /* Fill in Command Header */ | |
2407 | c->Header.ReplyQueue = 0; /* unused in simple mode */ | |
2408 | if (iocommand.buf_size > 0) { /* buffer to fill */ | |
2409 | c->Header.SGList = 1; | |
2410 | c->Header.SGTotal = 1; | |
2411 | } else { /* no buffers to fill */ | |
2412 | c->Header.SGList = 0; | |
2413 | c->Header.SGTotal = 0; | |
2414 | } | |
2415 | memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN)); | |
2416 | /* use the kernel address the cmd block for tag */ | |
2417 | c->Header.Tag.lower = c->busaddr; | |
2418 | ||
2419 | /* Fill in Request block */ | |
2420 | memcpy(&c->Request, &iocommand.Request, | |
2421 | sizeof(c->Request)); | |
2422 | ||
2423 | /* Fill in the scatter gather information */ | |
2424 | if (iocommand.buf_size > 0) { | |
2425 | temp64.val = pci_map_single(h->pdev, buff, | |
2426 | iocommand.buf_size, PCI_DMA_BIDIRECTIONAL); | |
2427 | c->SG[0].Addr.lower = temp64.val32.lower; | |
2428 | c->SG[0].Addr.upper = temp64.val32.upper; | |
2429 | c->SG[0].Len = iocommand.buf_size; | |
2430 | c->SG[0].Ext = 0; /* we are not chaining*/ | |
2431 | } | |
2432 | hpsa_scsi_do_simple_cmd_core(h, c); | |
2433 | hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL); | |
2434 | check_ioctl_unit_attention(h, c); | |
2435 | ||
2436 | /* Copy the error information out */ | |
2437 | memcpy(&iocommand.error_info, c->err_info, | |
2438 | sizeof(iocommand.error_info)); | |
2439 | if (copy_to_user(argp, &iocommand, sizeof(iocommand))) { | |
2440 | kfree(buff); | |
2441 | cmd_special_free(h, c); | |
2442 | return -EFAULT; | |
2443 | } | |
2444 | ||
2445 | if (iocommand.Request.Type.Direction == XFER_READ) { | |
2446 | /* Copy the data out of the buffer we created */ | |
2447 | if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) { | |
2448 | kfree(buff); | |
2449 | cmd_special_free(h, c); | |
2450 | return -EFAULT; | |
2451 | } | |
2452 | } | |
2453 | kfree(buff); | |
2454 | cmd_special_free(h, c); | |
2455 | return 0; | |
2456 | } | |
2457 | ||
2458 | static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp) | |
2459 | { | |
2460 | BIG_IOCTL_Command_struct *ioc; | |
2461 | struct CommandList *c; | |
2462 | unsigned char **buff = NULL; | |
2463 | int *buff_size = NULL; | |
2464 | union u64bit temp64; | |
2465 | BYTE sg_used = 0; | |
2466 | int status = 0; | |
2467 | int i; | |
01a02ffc SC |
2468 | u32 left; |
2469 | u32 sz; | |
edd16368 SC |
2470 | BYTE __user *data_ptr; |
2471 | ||
2472 | if (!argp) | |
2473 | return -EINVAL; | |
2474 | if (!capable(CAP_SYS_RAWIO)) | |
2475 | return -EPERM; | |
2476 | ioc = (BIG_IOCTL_Command_struct *) | |
2477 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
2478 | if (!ioc) { | |
2479 | status = -ENOMEM; | |
2480 | goto cleanup1; | |
2481 | } | |
2482 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
2483 | status = -EFAULT; | |
2484 | goto cleanup1; | |
2485 | } | |
2486 | if ((ioc->buf_size < 1) && | |
2487 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
2488 | status = -EINVAL; | |
2489 | goto cleanup1; | |
2490 | } | |
2491 | /* Check kmalloc limits using all SGs */ | |
2492 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
2493 | status = -EINVAL; | |
2494 | goto cleanup1; | |
2495 | } | |
2496 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
2497 | status = -EINVAL; | |
2498 | goto cleanup1; | |
2499 | } | |
2500 | buff = kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
2501 | if (!buff) { | |
2502 | status = -ENOMEM; | |
2503 | goto cleanup1; | |
2504 | } | |
2505 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), GFP_KERNEL); | |
2506 | if (!buff_size) { | |
2507 | status = -ENOMEM; | |
2508 | goto cleanup1; | |
2509 | } | |
2510 | left = ioc->buf_size; | |
2511 | data_ptr = ioc->buf; | |
2512 | while (left) { | |
2513 | sz = (left > ioc->malloc_size) ? ioc->malloc_size : left; | |
2514 | buff_size[sg_used] = sz; | |
2515 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
2516 | if (buff[sg_used] == NULL) { | |
2517 | status = -ENOMEM; | |
2518 | goto cleanup1; | |
2519 | } | |
2520 | if (ioc->Request.Type.Direction == XFER_WRITE) { | |
2521 | if (copy_from_user(buff[sg_used], data_ptr, sz)) { | |
2522 | status = -ENOMEM; | |
2523 | goto cleanup1; | |
2524 | } | |
2525 | } else | |
2526 | memset(buff[sg_used], 0, sz); | |
2527 | left -= sz; | |
2528 | data_ptr += sz; | |
2529 | sg_used++; | |
2530 | } | |
2531 | c = cmd_special_alloc(h); | |
2532 | if (c == NULL) { | |
2533 | status = -ENOMEM; | |
2534 | goto cleanup1; | |
2535 | } | |
2536 | c->cmd_type = CMD_IOCTL_PEND; | |
2537 | c->Header.ReplyQueue = 0; | |
2538 | ||
2539 | if (ioc->buf_size > 0) { | |
2540 | c->Header.SGList = sg_used; | |
2541 | c->Header.SGTotal = sg_used; | |
2542 | } else { | |
2543 | c->Header.SGList = 0; | |
2544 | c->Header.SGTotal = 0; | |
2545 | } | |
2546 | memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN)); | |
2547 | c->Header.Tag.lower = c->busaddr; | |
2548 | memcpy(&c->Request, &ioc->Request, sizeof(c->Request)); | |
2549 | if (ioc->buf_size > 0) { | |
2550 | int i; | |
2551 | for (i = 0; i < sg_used; i++) { | |
2552 | temp64.val = pci_map_single(h->pdev, buff[i], | |
2553 | buff_size[i], PCI_DMA_BIDIRECTIONAL); | |
2554 | c->SG[i].Addr.lower = temp64.val32.lower; | |
2555 | c->SG[i].Addr.upper = temp64.val32.upper; | |
2556 | c->SG[i].Len = buff_size[i]; | |
2557 | /* we are not chaining */ | |
2558 | c->SG[i].Ext = 0; | |
2559 | } | |
2560 | } | |
2561 | hpsa_scsi_do_simple_cmd_core(h, c); | |
2562 | hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL); | |
2563 | check_ioctl_unit_attention(h, c); | |
2564 | /* Copy the error information out */ | |
2565 | memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info)); | |
2566 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
2567 | cmd_special_free(h, c); | |
2568 | status = -EFAULT; | |
2569 | goto cleanup1; | |
2570 | } | |
2571 | if (ioc->Request.Type.Direction == XFER_READ) { | |
2572 | /* Copy the data out of the buffer we created */ | |
2573 | BYTE __user *ptr = ioc->buf; | |
2574 | for (i = 0; i < sg_used; i++) { | |
2575 | if (copy_to_user(ptr, buff[i], buff_size[i])) { | |
2576 | cmd_special_free(h, c); | |
2577 | status = -EFAULT; | |
2578 | goto cleanup1; | |
2579 | } | |
2580 | ptr += buff_size[i]; | |
2581 | } | |
2582 | } | |
2583 | cmd_special_free(h, c); | |
2584 | status = 0; | |
2585 | cleanup1: | |
2586 | if (buff) { | |
2587 | for (i = 0; i < sg_used; i++) | |
2588 | kfree(buff[i]); | |
2589 | kfree(buff); | |
2590 | } | |
2591 | kfree(buff_size); | |
2592 | kfree(ioc); | |
2593 | return status; | |
2594 | } | |
2595 | ||
2596 | static void check_ioctl_unit_attention(struct ctlr_info *h, | |
2597 | struct CommandList *c) | |
2598 | { | |
2599 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && | |
2600 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) | |
2601 | (void) check_for_unit_attention(h, c); | |
2602 | } | |
2603 | /* | |
2604 | * ioctl | |
2605 | */ | |
2606 | static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg) | |
2607 | { | |
2608 | struct ctlr_info *h; | |
2609 | void __user *argp = (void __user *)arg; | |
2610 | ||
2611 | h = sdev_to_hba(dev); | |
2612 | ||
2613 | switch (cmd) { | |
2614 | case CCISS_DEREGDISK: | |
2615 | case CCISS_REGNEWDISK: | |
2616 | case CCISS_REGNEWD: | |
2617 | hpsa_update_scsi_devices(h, dev->host->host_no); | |
2618 | return 0; | |
2619 | case CCISS_GETPCIINFO: | |
2620 | return hpsa_getpciinfo_ioctl(h, argp); | |
2621 | case CCISS_GETDRIVVER: | |
2622 | return hpsa_getdrivver_ioctl(h, argp); | |
2623 | case CCISS_PASSTHRU: | |
2624 | return hpsa_passthru_ioctl(h, argp); | |
2625 | case CCISS_BIG_PASSTHRU: | |
2626 | return hpsa_big_passthru_ioctl(h, argp); | |
2627 | default: | |
2628 | return -ENOTTY; | |
2629 | } | |
2630 | } | |
2631 | ||
01a02ffc SC |
2632 | static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, |
2633 | void *buff, size_t size, u8 page_code, unsigned char *scsi3addr, | |
edd16368 SC |
2634 | int cmd_type) |
2635 | { | |
2636 | int pci_dir = XFER_NONE; | |
2637 | ||
2638 | c->cmd_type = CMD_IOCTL_PEND; | |
2639 | c->Header.ReplyQueue = 0; | |
2640 | if (buff != NULL && size > 0) { | |
2641 | c->Header.SGList = 1; | |
2642 | c->Header.SGTotal = 1; | |
2643 | } else { | |
2644 | c->Header.SGList = 0; | |
2645 | c->Header.SGTotal = 0; | |
2646 | } | |
2647 | c->Header.Tag.lower = c->busaddr; | |
2648 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); | |
2649 | ||
2650 | c->Request.Type.Type = cmd_type; | |
2651 | if (cmd_type == TYPE_CMD) { | |
2652 | switch (cmd) { | |
2653 | case HPSA_INQUIRY: | |
2654 | /* are we trying to read a vital product page */ | |
2655 | if (page_code != 0) { | |
2656 | c->Request.CDB[1] = 0x01; | |
2657 | c->Request.CDB[2] = page_code; | |
2658 | } | |
2659 | c->Request.CDBLen = 6; | |
2660 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2661 | c->Request.Type.Direction = XFER_READ; | |
2662 | c->Request.Timeout = 0; | |
2663 | c->Request.CDB[0] = HPSA_INQUIRY; | |
2664 | c->Request.CDB[4] = size & 0xFF; | |
2665 | break; | |
2666 | case HPSA_REPORT_LOG: | |
2667 | case HPSA_REPORT_PHYS: | |
2668 | /* Talking to controller so It's a physical command | |
2669 | mode = 00 target = 0. Nothing to write. | |
2670 | */ | |
2671 | c->Request.CDBLen = 12; | |
2672 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2673 | c->Request.Type.Direction = XFER_READ; | |
2674 | c->Request.Timeout = 0; | |
2675 | c->Request.CDB[0] = cmd; | |
2676 | c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ | |
2677 | c->Request.CDB[7] = (size >> 16) & 0xFF; | |
2678 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
2679 | c->Request.CDB[9] = size & 0xFF; | |
2680 | break; | |
2681 | ||
2682 | case HPSA_READ_CAPACITY: | |
2683 | c->Request.CDBLen = 10; | |
2684 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2685 | c->Request.Type.Direction = XFER_READ; | |
2686 | c->Request.Timeout = 0; | |
2687 | c->Request.CDB[0] = cmd; | |
2688 | break; | |
2689 | case HPSA_CACHE_FLUSH: | |
2690 | c->Request.CDBLen = 12; | |
2691 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2692 | c->Request.Type.Direction = XFER_WRITE; | |
2693 | c->Request.Timeout = 0; | |
2694 | c->Request.CDB[0] = BMIC_WRITE; | |
2695 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
2696 | break; | |
2697 | case TEST_UNIT_READY: | |
2698 | c->Request.CDBLen = 6; | |
2699 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2700 | c->Request.Type.Direction = XFER_NONE; | |
2701 | c->Request.Timeout = 0; | |
2702 | break; | |
2703 | default: | |
2704 | dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd); | |
2705 | BUG(); | |
2706 | return; | |
2707 | } | |
2708 | } else if (cmd_type == TYPE_MSG) { | |
2709 | switch (cmd) { | |
2710 | ||
2711 | case HPSA_DEVICE_RESET_MSG: | |
2712 | c->Request.CDBLen = 16; | |
2713 | c->Request.Type.Type = 1; /* It is a MSG not a CMD */ | |
2714 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2715 | c->Request.Type.Direction = XFER_NONE; | |
2716 | c->Request.Timeout = 0; /* Don't time out */ | |
2717 | c->Request.CDB[0] = 0x01; /* RESET_MSG is 0x01 */ | |
2718 | c->Request.CDB[1] = 0x03; /* Reset target above */ | |
2719 | /* If bytes 4-7 are zero, it means reset the */ | |
2720 | /* LunID device */ | |
2721 | c->Request.CDB[4] = 0x00; | |
2722 | c->Request.CDB[5] = 0x00; | |
2723 | c->Request.CDB[6] = 0x00; | |
2724 | c->Request.CDB[7] = 0x00; | |
2725 | break; | |
2726 | ||
2727 | default: | |
2728 | dev_warn(&h->pdev->dev, "unknown message type %d\n", | |
2729 | cmd); | |
2730 | BUG(); | |
2731 | } | |
2732 | } else { | |
2733 | dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type); | |
2734 | BUG(); | |
2735 | } | |
2736 | ||
2737 | switch (c->Request.Type.Direction) { | |
2738 | case XFER_READ: | |
2739 | pci_dir = PCI_DMA_FROMDEVICE; | |
2740 | break; | |
2741 | case XFER_WRITE: | |
2742 | pci_dir = PCI_DMA_TODEVICE; | |
2743 | break; | |
2744 | case XFER_NONE: | |
2745 | pci_dir = PCI_DMA_NONE; | |
2746 | break; | |
2747 | default: | |
2748 | pci_dir = PCI_DMA_BIDIRECTIONAL; | |
2749 | } | |
2750 | ||
2751 | hpsa_map_one(h->pdev, c, buff, size, pci_dir); | |
2752 | ||
2753 | return; | |
2754 | } | |
2755 | ||
2756 | /* | |
2757 | * Map (physical) PCI mem into (virtual) kernel space | |
2758 | */ | |
2759 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2760 | { | |
2761 | ulong page_base = ((ulong) base) & PAGE_MASK; | |
2762 | ulong page_offs = ((ulong) base) - page_base; | |
2763 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
2764 | ||
2765 | return page_remapped ? (page_remapped + page_offs) : NULL; | |
2766 | } | |
2767 | ||
2768 | /* Takes cmds off the submission queue and sends them to the hardware, | |
2769 | * then puts them on the queue of cmds waiting for completion. | |
2770 | */ | |
2771 | static void start_io(struct ctlr_info *h) | |
2772 | { | |
2773 | struct CommandList *c; | |
2774 | ||
2775 | while (!hlist_empty(&h->reqQ)) { | |
2776 | c = hlist_entry(h->reqQ.first, struct CommandList, list); | |
2777 | /* can't do anything if fifo is full */ | |
2778 | if ((h->access.fifo_full(h))) { | |
2779 | dev_warn(&h->pdev->dev, "fifo full\n"); | |
2780 | break; | |
2781 | } | |
2782 | ||
2783 | /* Get the first entry from the Request Q */ | |
2784 | removeQ(c); | |
2785 | h->Qdepth--; | |
2786 | ||
2787 | /* Tell the controller execute command */ | |
2788 | h->access.submit_command(h, c); | |
2789 | ||
2790 | /* Put job onto the completed Q */ | |
2791 | addQ(&h->cmpQ, c); | |
2792 | } | |
2793 | } | |
2794 | ||
2795 | static inline unsigned long get_next_completion(struct ctlr_info *h) | |
2796 | { | |
2797 | return h->access.command_completed(h); | |
2798 | } | |
2799 | ||
900c5440 | 2800 | static inline bool interrupt_pending(struct ctlr_info *h) |
edd16368 SC |
2801 | { |
2802 | return h->access.intr_pending(h); | |
2803 | } | |
2804 | ||
2805 | static inline long interrupt_not_for_us(struct ctlr_info *h) | |
2806 | { | |
303932fd DB |
2807 | return !(h->msi_vector || h->msix_vector) && |
2808 | ((h->access.intr_pending(h) == 0) || | |
2809 | (h->interrupts_enabled == 0)); | |
edd16368 SC |
2810 | } |
2811 | ||
01a02ffc SC |
2812 | static inline int bad_tag(struct ctlr_info *h, u32 tag_index, |
2813 | u32 raw_tag) | |
edd16368 SC |
2814 | { |
2815 | if (unlikely(tag_index >= h->nr_cmds)) { | |
2816 | dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); | |
2817 | return 1; | |
2818 | } | |
2819 | return 0; | |
2820 | } | |
2821 | ||
01a02ffc | 2822 | static inline void finish_cmd(struct CommandList *c, u32 raw_tag) |
edd16368 SC |
2823 | { |
2824 | removeQ(c); | |
2825 | if (likely(c->cmd_type == CMD_SCSI)) | |
2826 | complete_scsi_command(c, 0, raw_tag); | |
2827 | else if (c->cmd_type == CMD_IOCTL_PEND) | |
2828 | complete(c->waiting); | |
2829 | } | |
2830 | ||
a104c99f SC |
2831 | static inline u32 hpsa_tag_contains_index(u32 tag) |
2832 | { | |
303932fd | 2833 | #define DIRECT_LOOKUP_BIT 0x10 |
a104c99f SC |
2834 | return tag & DIRECT_LOOKUP_BIT; |
2835 | } | |
2836 | ||
2837 | static inline u32 hpsa_tag_to_index(u32 tag) | |
2838 | { | |
303932fd | 2839 | #define DIRECT_LOOKUP_SHIFT 5 |
a104c99f SC |
2840 | return tag >> DIRECT_LOOKUP_SHIFT; |
2841 | } | |
2842 | ||
2843 | static inline u32 hpsa_tag_discard_error_bits(u32 tag) | |
2844 | { | |
2845 | #define HPSA_ERROR_BITS 0x03 | |
2846 | return tag & ~HPSA_ERROR_BITS; | |
2847 | } | |
2848 | ||
303932fd DB |
2849 | /* process completion of an indexed ("direct lookup") command */ |
2850 | static inline u32 process_indexed_cmd(struct ctlr_info *h, | |
2851 | u32 raw_tag) | |
2852 | { | |
2853 | u32 tag_index; | |
2854 | struct CommandList *c; | |
2855 | ||
2856 | tag_index = hpsa_tag_to_index(raw_tag); | |
2857 | if (bad_tag(h, tag_index, raw_tag)) | |
2858 | return next_command(h); | |
2859 | c = h->cmd_pool + tag_index; | |
2860 | finish_cmd(c, raw_tag); | |
2861 | return next_command(h); | |
2862 | } | |
2863 | ||
2864 | /* process completion of a non-indexed command */ | |
2865 | static inline u32 process_nonindexed_cmd(struct ctlr_info *h, | |
2866 | u32 raw_tag) | |
2867 | { | |
2868 | u32 tag; | |
2869 | struct CommandList *c = NULL; | |
2870 | struct hlist_node *tmp; | |
2871 | ||
2872 | tag = hpsa_tag_discard_error_bits(raw_tag); | |
2873 | hlist_for_each_entry(c, tmp, &h->cmpQ, list) { | |
2874 | if ((c->busaddr & 0xFFFFFFE0) == (tag & 0xFFFFFFE0)) { | |
2875 | finish_cmd(c, raw_tag); | |
2876 | return next_command(h); | |
2877 | } | |
2878 | } | |
2879 | bad_tag(h, h->nr_cmds + 1, raw_tag); | |
2880 | return next_command(h); | |
2881 | } | |
2882 | ||
edd16368 SC |
2883 | static irqreturn_t do_hpsa_intr(int irq, void *dev_id) |
2884 | { | |
2885 | struct ctlr_info *h = dev_id; | |
edd16368 | 2886 | unsigned long flags; |
303932fd | 2887 | u32 raw_tag; |
edd16368 SC |
2888 | |
2889 | if (interrupt_not_for_us(h)) | |
2890 | return IRQ_NONE; | |
2891 | spin_lock_irqsave(&h->lock, flags); | |
303932fd DB |
2892 | raw_tag = get_next_completion(h); |
2893 | while (raw_tag != FIFO_EMPTY) { | |
2894 | if (hpsa_tag_contains_index(raw_tag)) | |
2895 | raw_tag = process_indexed_cmd(h, raw_tag); | |
2896 | else | |
2897 | raw_tag = process_nonindexed_cmd(h, raw_tag); | |
edd16368 SC |
2898 | } |
2899 | spin_unlock_irqrestore(&h->lock, flags); | |
2900 | return IRQ_HANDLED; | |
2901 | } | |
2902 | ||
303932fd | 2903 | /* Send a message CDB to the firmwart. */ |
edd16368 SC |
2904 | static __devinit int hpsa_message(struct pci_dev *pdev, unsigned char opcode, |
2905 | unsigned char type) | |
2906 | { | |
2907 | struct Command { | |
2908 | struct CommandListHeader CommandHeader; | |
2909 | struct RequestBlock Request; | |
2910 | struct ErrDescriptor ErrorDescriptor; | |
2911 | }; | |
2912 | struct Command *cmd; | |
2913 | static const size_t cmd_sz = sizeof(*cmd) + | |
2914 | sizeof(cmd->ErrorDescriptor); | |
2915 | dma_addr_t paddr64; | |
2916 | uint32_t paddr32, tag; | |
2917 | void __iomem *vaddr; | |
2918 | int i, err; | |
2919 | ||
2920 | vaddr = pci_ioremap_bar(pdev, 0); | |
2921 | if (vaddr == NULL) | |
2922 | return -ENOMEM; | |
2923 | ||
2924 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the | |
2925 | * CCISS commands, so they must be allocated from the lower 4GiB of | |
2926 | * memory. | |
2927 | */ | |
2928 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); | |
2929 | if (err) { | |
2930 | iounmap(vaddr); | |
2931 | return -ENOMEM; | |
2932 | } | |
2933 | ||
2934 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); | |
2935 | if (cmd == NULL) { | |
2936 | iounmap(vaddr); | |
2937 | return -ENOMEM; | |
2938 | } | |
2939 | ||
2940 | /* This must fit, because of the 32-bit consistent DMA mask. Also, | |
2941 | * although there's no guarantee, we assume that the address is at | |
2942 | * least 4-byte aligned (most likely, it's page-aligned). | |
2943 | */ | |
2944 | paddr32 = paddr64; | |
2945 | ||
2946 | cmd->CommandHeader.ReplyQueue = 0; | |
2947 | cmd->CommandHeader.SGList = 0; | |
2948 | cmd->CommandHeader.SGTotal = 0; | |
2949 | cmd->CommandHeader.Tag.lower = paddr32; | |
2950 | cmd->CommandHeader.Tag.upper = 0; | |
2951 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); | |
2952 | ||
2953 | cmd->Request.CDBLen = 16; | |
2954 | cmd->Request.Type.Type = TYPE_MSG; | |
2955 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; | |
2956 | cmd->Request.Type.Direction = XFER_NONE; | |
2957 | cmd->Request.Timeout = 0; /* Don't time out */ | |
2958 | cmd->Request.CDB[0] = opcode; | |
2959 | cmd->Request.CDB[1] = type; | |
2960 | memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */ | |
2961 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(*cmd); | |
2962 | cmd->ErrorDescriptor.Addr.upper = 0; | |
2963 | cmd->ErrorDescriptor.Len = sizeof(struct ErrorInfo); | |
2964 | ||
2965 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); | |
2966 | ||
2967 | for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) { | |
2968 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); | |
a104c99f | 2969 | if (hpsa_tag_discard_error_bits(tag) == paddr32) |
edd16368 SC |
2970 | break; |
2971 | msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS); | |
2972 | } | |
2973 | ||
2974 | iounmap(vaddr); | |
2975 | ||
2976 | /* we leak the DMA buffer here ... no choice since the controller could | |
2977 | * still complete the command. | |
2978 | */ | |
2979 | if (i == HPSA_MSG_SEND_RETRY_LIMIT) { | |
2980 | dev_err(&pdev->dev, "controller message %02x:%02x timed out\n", | |
2981 | opcode, type); | |
2982 | return -ETIMEDOUT; | |
2983 | } | |
2984 | ||
2985 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); | |
2986 | ||
2987 | if (tag & HPSA_ERROR_BIT) { | |
2988 | dev_err(&pdev->dev, "controller message %02x:%02x failed\n", | |
2989 | opcode, type); | |
2990 | return -EIO; | |
2991 | } | |
2992 | ||
2993 | dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n", | |
2994 | opcode, type); | |
2995 | return 0; | |
2996 | } | |
2997 | ||
2998 | #define hpsa_soft_reset_controller(p) hpsa_message(p, 1, 0) | |
2999 | #define hpsa_noop(p) hpsa_message(p, 3, 0) | |
3000 | ||
3001 | static __devinit int hpsa_reset_msi(struct pci_dev *pdev) | |
3002 | { | |
3003 | /* the #defines are stolen from drivers/pci/msi.h. */ | |
3004 | #define msi_control_reg(base) (base + PCI_MSI_FLAGS) | |
3005 | #define PCI_MSIX_FLAGS_ENABLE (1 << 15) | |
3006 | ||
3007 | int pos; | |
3008 | u16 control = 0; | |
3009 | ||
3010 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSI); | |
3011 | if (pos) { | |
3012 | pci_read_config_word(pdev, msi_control_reg(pos), &control); | |
3013 | if (control & PCI_MSI_FLAGS_ENABLE) { | |
3014 | dev_info(&pdev->dev, "resetting MSI\n"); | |
3015 | pci_write_config_word(pdev, msi_control_reg(pos), | |
3016 | control & ~PCI_MSI_FLAGS_ENABLE); | |
3017 | } | |
3018 | } | |
3019 | ||
3020 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); | |
3021 | if (pos) { | |
3022 | pci_read_config_word(pdev, msi_control_reg(pos), &control); | |
3023 | if (control & PCI_MSIX_FLAGS_ENABLE) { | |
3024 | dev_info(&pdev->dev, "resetting MSI-X\n"); | |
3025 | pci_write_config_word(pdev, msi_control_reg(pos), | |
3026 | control & ~PCI_MSIX_FLAGS_ENABLE); | |
3027 | } | |
3028 | } | |
3029 | ||
3030 | return 0; | |
3031 | } | |
3032 | ||
3033 | /* This does a hard reset of the controller using PCI power management | |
3034 | * states. | |
3035 | */ | |
3036 | static __devinit int hpsa_hard_reset_controller(struct pci_dev *pdev) | |
3037 | { | |
3038 | u16 pmcsr, saved_config_space[32]; | |
3039 | int i, pos; | |
3040 | ||
3041 | dev_info(&pdev->dev, "using PCI PM to reset controller\n"); | |
3042 | ||
3043 | /* This is very nearly the same thing as | |
3044 | * | |
3045 | * pci_save_state(pci_dev); | |
3046 | * pci_set_power_state(pci_dev, PCI_D3hot); | |
3047 | * pci_set_power_state(pci_dev, PCI_D0); | |
3048 | * pci_restore_state(pci_dev); | |
3049 | * | |
3050 | * but we can't use these nice canned kernel routines on | |
3051 | * kexec, because they also check the MSI/MSI-X state in PCI | |
3052 | * configuration space and do the wrong thing when it is | |
3053 | * set/cleared. Also, the pci_save/restore_state functions | |
3054 | * violate the ordering requirements for restoring the | |
3055 | * configuration space from the CCISS document (see the | |
3056 | * comment below). So we roll our own .... | |
3057 | */ | |
3058 | ||
3059 | for (i = 0; i < 32; i++) | |
3060 | pci_read_config_word(pdev, 2*i, &saved_config_space[i]); | |
3061 | ||
3062 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); | |
3063 | if (pos == 0) { | |
3064 | dev_err(&pdev->dev, | |
3065 | "hpsa_reset_controller: PCI PM not supported\n"); | |
3066 | return -ENODEV; | |
3067 | } | |
3068 | ||
3069 | /* Quoting from the Open CISS Specification: "The Power | |
3070 | * Management Control/Status Register (CSR) controls the power | |
3071 | * state of the device. The normal operating state is D0, | |
3072 | * CSR=00h. The software off state is D3, CSR=03h. To reset | |
3073 | * the controller, place the interface device in D3 then to | |
3074 | * D0, this causes a secondary PCI reset which will reset the | |
3075 | * controller." | |
3076 | */ | |
3077 | ||
3078 | /* enter the D3hot power management state */ | |
3079 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); | |
3080 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
3081 | pmcsr |= PCI_D3hot; | |
3082 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
3083 | ||
3084 | msleep(500); | |
3085 | ||
3086 | /* enter the D0 power management state */ | |
3087 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
3088 | pmcsr |= PCI_D0; | |
3089 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
3090 | ||
3091 | msleep(500); | |
3092 | ||
3093 | /* Restore the PCI configuration space. The Open CISS | |
3094 | * Specification says, "Restore the PCI Configuration | |
3095 | * Registers, offsets 00h through 60h. It is important to | |
3096 | * restore the command register, 16-bits at offset 04h, | |
3097 | * last. Do not restore the configuration status register, | |
3098 | * 16-bits at offset 06h." Note that the offset is 2*i. | |
3099 | */ | |
3100 | for (i = 0; i < 32; i++) { | |
3101 | if (i == 2 || i == 3) | |
3102 | continue; | |
3103 | pci_write_config_word(pdev, 2*i, saved_config_space[i]); | |
3104 | } | |
3105 | wmb(); | |
3106 | pci_write_config_word(pdev, 4, saved_config_space[2]); | |
3107 | ||
3108 | return 0; | |
3109 | } | |
3110 | ||
3111 | /* | |
3112 | * We cannot read the structure directly, for portability we must use | |
3113 | * the io functions. | |
3114 | * This is for debug only. | |
3115 | */ | |
3116 | #ifdef HPSA_DEBUG | |
3117 | static void print_cfg_table(struct device *dev, struct CfgTable *tb) | |
3118 | { | |
3119 | int i; | |
3120 | char temp_name[17]; | |
3121 | ||
3122 | dev_info(dev, "Controller Configuration information\n"); | |
3123 | dev_info(dev, "------------------------------------\n"); | |
3124 | for (i = 0; i < 4; i++) | |
3125 | temp_name[i] = readb(&(tb->Signature[i])); | |
3126 | temp_name[4] = '\0'; | |
3127 | dev_info(dev, " Signature = %s\n", temp_name); | |
3128 | dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence))); | |
3129 | dev_info(dev, " Transport methods supported = 0x%x\n", | |
3130 | readl(&(tb->TransportSupport))); | |
3131 | dev_info(dev, " Transport methods active = 0x%x\n", | |
3132 | readl(&(tb->TransportActive))); | |
3133 | dev_info(dev, " Requested transport Method = 0x%x\n", | |
3134 | readl(&(tb->HostWrite.TransportRequest))); | |
3135 | dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n", | |
3136 | readl(&(tb->HostWrite.CoalIntDelay))); | |
3137 | dev_info(dev, " Coalesce Interrupt Count = 0x%x\n", | |
3138 | readl(&(tb->HostWrite.CoalIntCount))); | |
3139 | dev_info(dev, " Max outstanding commands = 0x%d\n", | |
3140 | readl(&(tb->CmdsOutMax))); | |
3141 | dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
3142 | for (i = 0; i < 16; i++) | |
3143 | temp_name[i] = readb(&(tb->ServerName[i])); | |
3144 | temp_name[16] = '\0'; | |
3145 | dev_info(dev, " Server Name = %s\n", temp_name); | |
3146 | dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n", | |
3147 | readl(&(tb->HeartBeat))); | |
3148 | } | |
3149 | #endif /* HPSA_DEBUG */ | |
3150 | ||
3151 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) | |
3152 | { | |
3153 | int i, offset, mem_type, bar_type; | |
3154 | ||
3155 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ | |
3156 | return 0; | |
3157 | offset = 0; | |
3158 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { | |
3159 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
3160 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) | |
3161 | offset += 4; | |
3162 | else { | |
3163 | mem_type = pci_resource_flags(pdev, i) & | |
3164 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; | |
3165 | switch (mem_type) { | |
3166 | case PCI_BASE_ADDRESS_MEM_TYPE_32: | |
3167 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
3168 | offset += 4; /* 32 bit */ | |
3169 | break; | |
3170 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
3171 | offset += 8; | |
3172 | break; | |
3173 | default: /* reserved in PCI 2.2 */ | |
3174 | dev_warn(&pdev->dev, | |
3175 | "base address is invalid\n"); | |
3176 | return -1; | |
3177 | break; | |
3178 | } | |
3179 | } | |
3180 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) | |
3181 | return i + 1; | |
3182 | } | |
3183 | return -1; | |
3184 | } | |
3185 | ||
3186 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on | |
3187 | * controllers that are capable. If not, we use IO-APIC mode. | |
3188 | */ | |
3189 | ||
3190 | static void __devinit hpsa_interrupt_mode(struct ctlr_info *h, | |
01a02ffc | 3191 | struct pci_dev *pdev, u32 board_id) |
edd16368 SC |
3192 | { |
3193 | #ifdef CONFIG_PCI_MSI | |
3194 | int err; | |
3195 | struct msix_entry hpsa_msix_entries[4] = { {0, 0}, {0, 1}, | |
3196 | {0, 2}, {0, 3} | |
3197 | }; | |
3198 | ||
3199 | /* Some boards advertise MSI but don't really support it */ | |
3200 | if ((board_id == 0x40700E11) || | |
3201 | (board_id == 0x40800E11) || | |
3202 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) | |
3203 | goto default_int_mode; | |
3204 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { | |
3205 | dev_info(&pdev->dev, "MSIX\n"); | |
3206 | err = pci_enable_msix(pdev, hpsa_msix_entries, 4); | |
3207 | if (!err) { | |
3208 | h->intr[0] = hpsa_msix_entries[0].vector; | |
3209 | h->intr[1] = hpsa_msix_entries[1].vector; | |
3210 | h->intr[2] = hpsa_msix_entries[2].vector; | |
3211 | h->intr[3] = hpsa_msix_entries[3].vector; | |
3212 | h->msix_vector = 1; | |
3213 | return; | |
3214 | } | |
3215 | if (err > 0) { | |
3216 | dev_warn(&pdev->dev, "only %d MSI-X vectors " | |
3217 | "available\n", err); | |
3218 | goto default_int_mode; | |
3219 | } else { | |
3220 | dev_warn(&pdev->dev, "MSI-X init failed %d\n", | |
3221 | err); | |
3222 | goto default_int_mode; | |
3223 | } | |
3224 | } | |
3225 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { | |
3226 | dev_info(&pdev->dev, "MSI\n"); | |
3227 | if (!pci_enable_msi(pdev)) | |
3228 | h->msi_vector = 1; | |
3229 | else | |
3230 | dev_warn(&pdev->dev, "MSI init failed\n"); | |
3231 | } | |
3232 | default_int_mode: | |
3233 | #endif /* CONFIG_PCI_MSI */ | |
3234 | /* if we get here we're going to use the default interrupt mode */ | |
303932fd | 3235 | h->intr[PERF_MODE_INT] = pdev->irq; |
edd16368 SC |
3236 | } |
3237 | ||
3238 | static int hpsa_pci_init(struct ctlr_info *h, struct pci_dev *pdev) | |
3239 | { | |
3240 | ushort subsystem_vendor_id, subsystem_device_id, command; | |
01a02ffc SC |
3241 | u32 board_id, scratchpad = 0; |
3242 | u64 cfg_offset; | |
3243 | u32 cfg_base_addr; | |
3244 | u64 cfg_base_addr_index; | |
303932fd | 3245 | u32 trans_offset; |
edd16368 SC |
3246 | int i, prod_index, err; |
3247 | ||
3248 | subsystem_vendor_id = pdev->subsystem_vendor; | |
3249 | subsystem_device_id = pdev->subsystem_device; | |
01a02ffc | 3250 | board_id = (((u32) (subsystem_device_id << 16) & 0xffff0000) | |
edd16368 SC |
3251 | subsystem_vendor_id); |
3252 | ||
3253 | for (i = 0; i < ARRAY_SIZE(products); i++) | |
3254 | if (board_id == products[i].board_id) | |
3255 | break; | |
3256 | ||
3257 | prod_index = i; | |
3258 | ||
3259 | if (prod_index == ARRAY_SIZE(products)) { | |
3260 | prod_index--; | |
3261 | if (subsystem_vendor_id != PCI_VENDOR_ID_HP || | |
3262 | !hpsa_allow_any) { | |
3263 | dev_warn(&pdev->dev, "unrecognized board ID:" | |
3264 | " 0x%08lx, ignoring.\n", | |
3265 | (unsigned long) board_id); | |
3266 | return -ENODEV; | |
3267 | } | |
3268 | } | |
3269 | /* check to see if controller has been disabled | |
3270 | * BEFORE trying to enable it | |
3271 | */ | |
3272 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); | |
3273 | if (!(command & 0x02)) { | |
3274 | dev_warn(&pdev->dev, "controller appears to be disabled\n"); | |
3275 | return -ENODEV; | |
3276 | } | |
3277 | ||
3278 | err = pci_enable_device(pdev); | |
3279 | if (err) { | |
3280 | dev_warn(&pdev->dev, "unable to enable PCI device\n"); | |
3281 | return err; | |
3282 | } | |
3283 | ||
3284 | err = pci_request_regions(pdev, "hpsa"); | |
3285 | if (err) { | |
3286 | dev_err(&pdev->dev, "cannot obtain PCI resources, aborting\n"); | |
3287 | return err; | |
3288 | } | |
3289 | ||
3290 | /* If the kernel supports MSI/MSI-X we will try to enable that, | |
3291 | * else we use the IO-APIC interrupt assigned to us by system ROM. | |
3292 | */ | |
3293 | hpsa_interrupt_mode(h, pdev, board_id); | |
3294 | ||
3295 | /* find the memory BAR */ | |
3296 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { | |
3297 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) | |
3298 | break; | |
3299 | } | |
3300 | if (i == DEVICE_COUNT_RESOURCE) { | |
3301 | dev_warn(&pdev->dev, "no memory BAR found\n"); | |
3302 | err = -ENODEV; | |
3303 | goto err_out_free_res; | |
3304 | } | |
3305 | ||
3306 | h->paddr = pci_resource_start(pdev, i); /* addressing mode bits | |
3307 | * already removed | |
3308 | */ | |
3309 | ||
3310 | h->vaddr = remap_pci_mem(h->paddr, 0x250); | |
3311 | ||
3312 | /* Wait for the board to become ready. */ | |
3313 | for (i = 0; i < HPSA_BOARD_READY_ITERATIONS; i++) { | |
3314 | scratchpad = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); | |
3315 | if (scratchpad == HPSA_FIRMWARE_READY) | |
3316 | break; | |
3317 | msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS); | |
3318 | } | |
3319 | if (scratchpad != HPSA_FIRMWARE_READY) { | |
3320 | dev_warn(&pdev->dev, "board not ready, timed out.\n"); | |
3321 | err = -ENODEV; | |
3322 | goto err_out_free_res; | |
3323 | } | |
3324 | ||
3325 | /* get the address index number */ | |
3326 | cfg_base_addr = readl(h->vaddr + SA5_CTCFG_OFFSET); | |
01a02ffc | 3327 | cfg_base_addr &= (u32) 0x0000ffff; |
edd16368 SC |
3328 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); |
3329 | if (cfg_base_addr_index == -1) { | |
3330 | dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n"); | |
3331 | err = -ENODEV; | |
3332 | goto err_out_free_res; | |
3333 | } | |
3334 | ||
3335 | cfg_offset = readl(h->vaddr + SA5_CTMEM_OFFSET); | |
3336 | h->cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
3337 | cfg_base_addr_index) + cfg_offset, | |
3338 | sizeof(h->cfgtable)); | |
303932fd DB |
3339 | /* Find performant mode table. */ |
3340 | trans_offset = readl(&(h->cfgtable->TransMethodOffset)); | |
3341 | h->transtable = remap_pci_mem(pci_resource_start(pdev, | |
3342 | cfg_base_addr_index)+cfg_offset+trans_offset, | |
3343 | sizeof(*h->transtable)); | |
edd16368 | 3344 | |
303932fd DB |
3345 | h->board_id = board_id; |
3346 | h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); | |
edd16368 SC |
3347 | h->product_name = products[prod_index].product_name; |
3348 | h->access = *(products[prod_index].access); | |
3349 | /* Allow room for some ioctls */ | |
3350 | h->nr_cmds = h->max_commands - 4; | |
3351 | ||
3352 | if ((readb(&h->cfgtable->Signature[0]) != 'C') || | |
3353 | (readb(&h->cfgtable->Signature[1]) != 'I') || | |
3354 | (readb(&h->cfgtable->Signature[2]) != 'S') || | |
3355 | (readb(&h->cfgtable->Signature[3]) != 'S')) { | |
3356 | dev_warn(&pdev->dev, "not a valid CISS config table\n"); | |
3357 | err = -ENODEV; | |
3358 | goto err_out_free_res; | |
3359 | } | |
3360 | #ifdef CONFIG_X86 | |
3361 | { | |
3362 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ | |
01a02ffc | 3363 | u32 prefetch; |
edd16368 SC |
3364 | prefetch = readl(&(h->cfgtable->SCSI_Prefetch)); |
3365 | prefetch |= 0x100; | |
3366 | writel(prefetch, &(h->cfgtable->SCSI_Prefetch)); | |
3367 | } | |
3368 | #endif | |
3369 | ||
3370 | /* Disabling DMA prefetch for the P600 | |
3371 | * An ASIC bug may result in a prefetch beyond | |
3372 | * physical memory. | |
3373 | */ | |
3374 | if (board_id == 0x3225103C) { | |
01a02ffc | 3375 | u32 dma_prefetch; |
edd16368 SC |
3376 | dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG); |
3377 | dma_prefetch |= 0x8000; | |
3378 | writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG); | |
3379 | } | |
3380 | ||
3381 | h->max_commands = readl(&(h->cfgtable->CmdsOutMax)); | |
3382 | /* Update the field, and then ring the doorbell */ | |
3383 | writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest)); | |
3384 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); | |
3385 | ||
3386 | /* under certain very rare conditions, this can take awhile. | |
3387 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
3388 | * as we enter this code.) | |
3389 | */ | |
3390 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { | |
3391 | if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) | |
3392 | break; | |
3393 | /* delay and try again */ | |
3394 | msleep(10); | |
3395 | } | |
3396 | ||
3397 | #ifdef HPSA_DEBUG | |
3398 | print_cfg_table(&pdev->dev, h->cfgtable); | |
3399 | #endif /* HPSA_DEBUG */ | |
3400 | ||
3401 | if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { | |
3402 | dev_warn(&pdev->dev, "unable to get board into simple mode\n"); | |
3403 | err = -ENODEV; | |
3404 | goto err_out_free_res; | |
3405 | } | |
3406 | return 0; | |
3407 | ||
3408 | err_out_free_res: | |
3409 | /* | |
3410 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3411 | * Smart Array controllers that pci_enable_device does not undo | |
3412 | */ | |
3413 | pci_release_regions(pdev); | |
3414 | return err; | |
3415 | } | |
3416 | ||
339b2b14 SC |
3417 | static void __devinit hpsa_hba_inquiry(struct ctlr_info *h) |
3418 | { | |
3419 | int rc; | |
3420 | ||
3421 | #define HBA_INQUIRY_BYTE_COUNT 64 | |
3422 | h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL); | |
3423 | if (!h->hba_inquiry_data) | |
3424 | return; | |
3425 | rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0, | |
3426 | h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT); | |
3427 | if (rc != 0) { | |
3428 | kfree(h->hba_inquiry_data); | |
3429 | h->hba_inquiry_data = NULL; | |
3430 | } | |
3431 | } | |
3432 | ||
edd16368 SC |
3433 | static int __devinit hpsa_init_one(struct pci_dev *pdev, |
3434 | const struct pci_device_id *ent) | |
3435 | { | |
ecd9aad4 | 3436 | int i, rc; |
edd16368 SC |
3437 | int dac; |
3438 | struct ctlr_info *h; | |
3439 | ||
3440 | if (number_of_controllers == 0) | |
3441 | printk(KERN_INFO DRIVER_NAME "\n"); | |
3442 | if (reset_devices) { | |
3443 | /* Reset the controller with a PCI power-cycle */ | |
3444 | if (hpsa_hard_reset_controller(pdev) || hpsa_reset_msi(pdev)) | |
3445 | return -ENODEV; | |
3446 | ||
3447 | /* Some devices (notably the HP Smart Array 5i Controller) | |
3448 | need a little pause here */ | |
3449 | msleep(HPSA_POST_RESET_PAUSE_MSECS); | |
3450 | ||
3451 | /* Now try to get the controller to respond to a no-op */ | |
3452 | for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) { | |
3453 | if (hpsa_noop(pdev) == 0) | |
3454 | break; | |
3455 | else | |
3456 | dev_warn(&pdev->dev, "no-op failed%s\n", | |
3457 | (i < 11 ? "; re-trying" : "")); | |
3458 | } | |
3459 | } | |
3460 | ||
303932fd DB |
3461 | /* Command structures must be aligned on a 32-byte boundary because |
3462 | * the 5 lower bits of the address are used by the hardware. and by | |
3463 | * the driver. See comments in hpsa.h for more info. | |
3464 | */ | |
3465 | #define COMMANDLIST_ALIGNMENT 32 | |
3466 | BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT); | |
edd16368 SC |
3467 | h = kzalloc(sizeof(*h), GFP_KERNEL); |
3468 | if (!h) | |
ecd9aad4 | 3469 | return -ENOMEM; |
edd16368 SC |
3470 | |
3471 | h->busy_initializing = 1; | |
3472 | INIT_HLIST_HEAD(&h->cmpQ); | |
3473 | INIT_HLIST_HEAD(&h->reqQ); | |
3474 | mutex_init(&h->busy_shutting_down); | |
3475 | init_completion(&h->scan_wait); | |
ecd9aad4 SC |
3476 | rc = hpsa_pci_init(h, pdev); |
3477 | if (rc != 0) | |
edd16368 SC |
3478 | goto clean1; |
3479 | ||
3480 | sprintf(h->devname, "hpsa%d", number_of_controllers); | |
3481 | h->ctlr = number_of_controllers; | |
3482 | number_of_controllers++; | |
3483 | h->pdev = pdev; | |
3484 | ||
3485 | /* configure PCI DMA stuff */ | |
ecd9aad4 SC |
3486 | rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); |
3487 | if (rc == 0) { | |
edd16368 | 3488 | dac = 1; |
ecd9aad4 SC |
3489 | } else { |
3490 | rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); | |
3491 | if (rc == 0) { | |
3492 | dac = 0; | |
3493 | } else { | |
3494 | dev_err(&pdev->dev, "no suitable DMA available\n"); | |
3495 | goto clean1; | |
3496 | } | |
edd16368 SC |
3497 | } |
3498 | ||
3499 | /* make sure the board interrupts are off */ | |
3500 | h->access.set_intr_mask(h, HPSA_INTR_OFF); | |
303932fd DB |
3501 | rc = request_irq(h->intr[PERF_MODE_INT], do_hpsa_intr, |
3502 | IRQF_DISABLED, h->devname, h); | |
ecd9aad4 | 3503 | if (rc) { |
edd16368 | 3504 | dev_err(&pdev->dev, "unable to get irq %d for %s\n", |
303932fd | 3505 | h->intr[PERF_MODE_INT], h->devname); |
edd16368 SC |
3506 | goto clean2; |
3507 | } | |
3508 | ||
303932fd DB |
3509 | dev_info(&pdev->dev, "%s: <0x%x> at IRQ %d%s using DAC\n", |
3510 | h->devname, pdev->device, | |
3511 | h->intr[PERF_MODE_INT], dac ? "" : " not"); | |
edd16368 SC |
3512 | |
3513 | h->cmd_pool_bits = | |
3514 | kmalloc(((h->nr_cmds + BITS_PER_LONG - | |
3515 | 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL); | |
3516 | h->cmd_pool = pci_alloc_consistent(h->pdev, | |
3517 | h->nr_cmds * sizeof(*h->cmd_pool), | |
3518 | &(h->cmd_pool_dhandle)); | |
3519 | h->errinfo_pool = pci_alloc_consistent(h->pdev, | |
3520 | h->nr_cmds * sizeof(*h->errinfo_pool), | |
3521 | &(h->errinfo_pool_dhandle)); | |
3522 | if ((h->cmd_pool_bits == NULL) | |
3523 | || (h->cmd_pool == NULL) | |
3524 | || (h->errinfo_pool == NULL)) { | |
3525 | dev_err(&pdev->dev, "out of memory"); | |
ecd9aad4 | 3526 | rc = -ENOMEM; |
edd16368 SC |
3527 | goto clean4; |
3528 | } | |
3529 | spin_lock_init(&h->lock); | |
3530 | ||
3531 | pci_set_drvdata(pdev, h); | |
3532 | memset(h->cmd_pool_bits, 0, | |
3533 | ((h->nr_cmds + BITS_PER_LONG - | |
3534 | 1) / BITS_PER_LONG) * sizeof(unsigned long)); | |
3535 | ||
3536 | hpsa_scsi_setup(h); | |
3537 | ||
3538 | /* Turn the interrupts on so we can service requests */ | |
3539 | h->access.set_intr_mask(h, HPSA_INTR_ON); | |
3540 | ||
303932fd | 3541 | hpsa_put_ctlr_into_performant_mode(h); |
339b2b14 | 3542 | hpsa_hba_inquiry(h); |
edd16368 SC |
3543 | hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */ |
3544 | h->busy_initializing = 0; | |
3545 | return 1; | |
3546 | ||
3547 | clean4: | |
3548 | kfree(h->cmd_pool_bits); | |
3549 | if (h->cmd_pool) | |
3550 | pci_free_consistent(h->pdev, | |
3551 | h->nr_cmds * sizeof(struct CommandList), | |
3552 | h->cmd_pool, h->cmd_pool_dhandle); | |
3553 | if (h->errinfo_pool) | |
3554 | pci_free_consistent(h->pdev, | |
3555 | h->nr_cmds * sizeof(struct ErrorInfo), | |
3556 | h->errinfo_pool, | |
3557 | h->errinfo_pool_dhandle); | |
303932fd | 3558 | free_irq(h->intr[PERF_MODE_INT], h); |
edd16368 SC |
3559 | clean2: |
3560 | clean1: | |
3561 | h->busy_initializing = 0; | |
3562 | kfree(h); | |
ecd9aad4 | 3563 | return rc; |
edd16368 SC |
3564 | } |
3565 | ||
3566 | static void hpsa_flush_cache(struct ctlr_info *h) | |
3567 | { | |
3568 | char *flush_buf; | |
3569 | struct CommandList *c; | |
3570 | ||
3571 | flush_buf = kzalloc(4, GFP_KERNEL); | |
3572 | if (!flush_buf) | |
3573 | return; | |
3574 | ||
3575 | c = cmd_special_alloc(h); | |
3576 | if (!c) { | |
3577 | dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); | |
3578 | goto out_of_memory; | |
3579 | } | |
3580 | fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0, | |
3581 | RAID_CTLR_LUNID, TYPE_CMD); | |
3582 | hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_TODEVICE); | |
3583 | if (c->err_info->CommandStatus != 0) | |
3584 | dev_warn(&h->pdev->dev, | |
3585 | "error flushing cache on controller\n"); | |
3586 | cmd_special_free(h, c); | |
3587 | out_of_memory: | |
3588 | kfree(flush_buf); | |
3589 | } | |
3590 | ||
3591 | static void hpsa_shutdown(struct pci_dev *pdev) | |
3592 | { | |
3593 | struct ctlr_info *h; | |
3594 | ||
3595 | h = pci_get_drvdata(pdev); | |
3596 | /* Turn board interrupts off and send the flush cache command | |
3597 | * sendcmd will turn off interrupt, and send the flush... | |
3598 | * To write all data in the battery backed cache to disks | |
3599 | */ | |
3600 | hpsa_flush_cache(h); | |
3601 | h->access.set_intr_mask(h, HPSA_INTR_OFF); | |
303932fd | 3602 | free_irq(h->intr[PERF_MODE_INT], h); |
edd16368 SC |
3603 | #ifdef CONFIG_PCI_MSI |
3604 | if (h->msix_vector) | |
3605 | pci_disable_msix(h->pdev); | |
3606 | else if (h->msi_vector) | |
3607 | pci_disable_msi(h->pdev); | |
3608 | #endif /* CONFIG_PCI_MSI */ | |
3609 | } | |
3610 | ||
3611 | static void __devexit hpsa_remove_one(struct pci_dev *pdev) | |
3612 | { | |
3613 | struct ctlr_info *h; | |
3614 | ||
3615 | if (pci_get_drvdata(pdev) == NULL) { | |
3616 | dev_err(&pdev->dev, "unable to remove device \n"); | |
3617 | return; | |
3618 | } | |
3619 | h = pci_get_drvdata(pdev); | |
3620 | mutex_lock(&h->busy_shutting_down); | |
3621 | remove_from_scan_list(h); | |
3622 | hpsa_unregister_scsi(h); /* unhook from SCSI subsystem */ | |
3623 | hpsa_shutdown(pdev); | |
3624 | iounmap(h->vaddr); | |
3625 | pci_free_consistent(h->pdev, | |
3626 | h->nr_cmds * sizeof(struct CommandList), | |
3627 | h->cmd_pool, h->cmd_pool_dhandle); | |
3628 | pci_free_consistent(h->pdev, | |
3629 | h->nr_cmds * sizeof(struct ErrorInfo), | |
3630 | h->errinfo_pool, h->errinfo_pool_dhandle); | |
303932fd DB |
3631 | pci_free_consistent(h->pdev, h->reply_pool_size, |
3632 | h->reply_pool, h->reply_pool_dhandle); | |
edd16368 | 3633 | kfree(h->cmd_pool_bits); |
303932fd | 3634 | kfree(h->blockFetchTable); |
339b2b14 | 3635 | kfree(h->hba_inquiry_data); |
edd16368 SC |
3636 | /* |
3637 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3638 | * Smart Array controllers that pci_enable_device does not undo | |
3639 | */ | |
3640 | pci_release_regions(pdev); | |
3641 | pci_set_drvdata(pdev, NULL); | |
3642 | mutex_unlock(&h->busy_shutting_down); | |
3643 | kfree(h); | |
3644 | } | |
3645 | ||
3646 | static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev, | |
3647 | __attribute__((unused)) pm_message_t state) | |
3648 | { | |
3649 | return -ENOSYS; | |
3650 | } | |
3651 | ||
3652 | static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev) | |
3653 | { | |
3654 | return -ENOSYS; | |
3655 | } | |
3656 | ||
3657 | static struct pci_driver hpsa_pci_driver = { | |
3658 | .name = "hpsa", | |
3659 | .probe = hpsa_init_one, | |
3660 | .remove = __devexit_p(hpsa_remove_one), | |
3661 | .id_table = hpsa_pci_device_id, /* id_table */ | |
3662 | .shutdown = hpsa_shutdown, | |
3663 | .suspend = hpsa_suspend, | |
3664 | .resume = hpsa_resume, | |
3665 | }; | |
3666 | ||
303932fd DB |
3667 | /* Fill in bucket_map[], given nsgs (the max number of |
3668 | * scatter gather elements supported) and bucket[], | |
3669 | * which is an array of 8 integers. The bucket[] array | |
3670 | * contains 8 different DMA transfer sizes (in 16 | |
3671 | * byte increments) which the controller uses to fetch | |
3672 | * commands. This function fills in bucket_map[], which | |
3673 | * maps a given number of scatter gather elements to one of | |
3674 | * the 8 DMA transfer sizes. The point of it is to allow the | |
3675 | * controller to only do as much DMA as needed to fetch the | |
3676 | * command, with the DMA transfer size encoded in the lower | |
3677 | * bits of the command address. | |
3678 | */ | |
3679 | static void calc_bucket_map(int bucket[], int num_buckets, | |
3680 | int nsgs, int *bucket_map) | |
3681 | { | |
3682 | int i, j, b, size; | |
3683 | ||
3684 | /* even a command with 0 SGs requires 4 blocks */ | |
3685 | #define MINIMUM_TRANSFER_BLOCKS 4 | |
3686 | #define NUM_BUCKETS 8 | |
3687 | /* Note, bucket_map must have nsgs+1 entries. */ | |
3688 | for (i = 0; i <= nsgs; i++) { | |
3689 | /* Compute size of a command with i SG entries */ | |
3690 | size = i + MINIMUM_TRANSFER_BLOCKS; | |
3691 | b = num_buckets; /* Assume the biggest bucket */ | |
3692 | /* Find the bucket that is just big enough */ | |
3693 | for (j = 0; j < 8; j++) { | |
3694 | if (bucket[j] >= size) { | |
3695 | b = j; | |
3696 | break; | |
3697 | } | |
3698 | } | |
3699 | /* for a command with i SG entries, use bucket b. */ | |
3700 | bucket_map[i] = b; | |
3701 | } | |
3702 | } | |
3703 | ||
3704 | static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) | |
3705 | { | |
3706 | u32 trans_support; | |
3707 | u64 trans_offset; | |
3708 | /* 5 = 1 s/g entry or 4k | |
3709 | * 6 = 2 s/g entry or 8k | |
3710 | * 8 = 4 s/g entry or 16k | |
3711 | * 10 = 6 s/g entry or 24k | |
3712 | */ | |
3713 | int bft[8] = {5, 6, 8, 10, 12, 20, 28, 35}; /* for scatter/gathers */ | |
3714 | int i = 0; | |
3715 | int l = 0; | |
3716 | unsigned long register_value; | |
3717 | ||
3718 | trans_support = readl(&(h->cfgtable->TransportSupport)); | |
3719 | if (!(trans_support & PERFORMANT_MODE)) | |
3720 | return; | |
3721 | ||
3722 | h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); | |
3723 | h->max_sg_entries = 32; | |
3724 | /* Performant mode ring buffer and supporting data structures */ | |
3725 | h->reply_pool_size = h->max_commands * sizeof(u64); | |
3726 | h->reply_pool = pci_alloc_consistent(h->pdev, h->reply_pool_size, | |
3727 | &(h->reply_pool_dhandle)); | |
3728 | ||
3729 | /* Need a block fetch table for performant mode */ | |
3730 | h->blockFetchTable = kmalloc(((h->max_sg_entries+1) * | |
3731 | sizeof(u32)), GFP_KERNEL); | |
3732 | ||
3733 | if ((h->reply_pool == NULL) | |
3734 | || (h->blockFetchTable == NULL)) | |
3735 | goto clean_up; | |
3736 | ||
3737 | h->reply_pool_wraparound = 1; /* spec: init to 1 */ | |
3738 | ||
3739 | /* Controller spec: zero out this buffer. */ | |
3740 | memset(h->reply_pool, 0, h->reply_pool_size); | |
3741 | h->reply_pool_head = h->reply_pool; | |
3742 | ||
3743 | trans_offset = readl(&(h->cfgtable->TransMethodOffset)); | |
3744 | bft[7] = h->max_sg_entries + 4; | |
3745 | calc_bucket_map(bft, ARRAY_SIZE(bft), 32, h->blockFetchTable); | |
3746 | for (i = 0; i < 8; i++) | |
3747 | writel(bft[i], &h->transtable->BlockFetch[i]); | |
3748 | ||
3749 | /* size of controller ring buffer */ | |
3750 | writel(h->max_commands, &h->transtable->RepQSize); | |
3751 | writel(1, &h->transtable->RepQCount); | |
3752 | writel(0, &h->transtable->RepQCtrAddrLow32); | |
3753 | writel(0, &h->transtable->RepQCtrAddrHigh32); | |
3754 | writel(h->reply_pool_dhandle, &h->transtable->RepQAddr0Low32); | |
3755 | writel(0, &h->transtable->RepQAddr0High32); | |
3756 | writel(CFGTBL_Trans_Performant, | |
3757 | &(h->cfgtable->HostWrite.TransportRequest)); | |
3758 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); | |
3759 | /* under certain very rare conditions, this can take awhile. | |
3760 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
3761 | * as we enter this code.) */ | |
3762 | for (l = 0; l < MAX_CONFIG_WAIT; l++) { | |
3763 | register_value = readl(h->vaddr + SA5_DOORBELL); | |
3764 | if (!(register_value & CFGTBL_ChangeReq)) | |
3765 | break; | |
3766 | /* delay and try again */ | |
3767 | set_current_state(TASK_INTERRUPTIBLE); | |
3768 | schedule_timeout(10); | |
3769 | } | |
3770 | register_value = readl(&(h->cfgtable->TransportActive)); | |
3771 | if (!(register_value & CFGTBL_Trans_Performant)) { | |
3772 | dev_warn(&h->pdev->dev, "unable to get board into" | |
3773 | " performant mode\n"); | |
3774 | return; | |
3775 | } | |
3776 | ||
3777 | /* Change the access methods to the performant access methods */ | |
3778 | h->access = SA5_performant_access; | |
3779 | h->transMethod = CFGTBL_Trans_Performant; | |
3780 | ||
3781 | return; | |
3782 | ||
3783 | clean_up: | |
3784 | if (h->reply_pool) | |
3785 | pci_free_consistent(h->pdev, h->reply_pool_size, | |
3786 | h->reply_pool, h->reply_pool_dhandle); | |
3787 | kfree(h->blockFetchTable); | |
3788 | } | |
3789 | ||
edd16368 SC |
3790 | /* |
3791 | * This is it. Register the PCI driver information for the cards we control | |
3792 | * the OS will call our registered routines when it finds one of our cards. | |
3793 | */ | |
3794 | static int __init hpsa_init(void) | |
3795 | { | |
3796 | int err; | |
3797 | /* Start the scan thread */ | |
3798 | hpsa_scan_thread = kthread_run(hpsa_scan_func, NULL, "hpsa_scan"); | |
3799 | if (IS_ERR(hpsa_scan_thread)) { | |
3800 | err = PTR_ERR(hpsa_scan_thread); | |
3801 | return -ENODEV; | |
3802 | } | |
3803 | err = pci_register_driver(&hpsa_pci_driver); | |
3804 | if (err) | |
3805 | kthread_stop(hpsa_scan_thread); | |
3806 | return err; | |
3807 | } | |
3808 | ||
3809 | static void __exit hpsa_cleanup(void) | |
3810 | { | |
3811 | pci_unregister_driver(&hpsa_pci_driver); | |
3812 | kthread_stop(hpsa_scan_thread); | |
3813 | } | |
3814 | ||
3815 | module_init(hpsa_init); | |
3816 | module_exit(hpsa_cleanup); |