Commit | Line | Data |
---|---|---|
8722ff8c | 1 | /* |
2 | * Filename: core.c | |
3 | * | |
4 | * | |
5 | * Authors: Joshua Morris <josh.h.morris@us.ibm.com> | |
6 | * Philip Kelleher <pjk1939@linux.vnet.ibm.com> | |
7 | * | |
8 | * (C) Copyright 2013 IBM Corporation | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License as | |
12 | * published by the Free Software Foundation; either version 2 of the | |
13 | * License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software Foundation, | |
22 | * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | */ | |
24 | ||
25 | #include <linux/kernel.h> | |
26 | #include <linux/init.h> | |
27 | #include <linux/interrupt.h> | |
28 | #include <linux/module.h> | |
29 | #include <linux/pci.h> | |
30 | #include <linux/reboot.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/bitops.h> | |
c95246c3 | 33 | #include <linux/delay.h> |
36f988e9 PK |
34 | #include <linux/debugfs.h> |
35 | #include <linux/seq_file.h> | |
8722ff8c | 36 | |
37 | #include <linux/genhd.h> | |
38 | #include <linux/idr.h> | |
39 | ||
40 | #include "rsxx_priv.h" | |
41 | #include "rsxx_cfg.h" | |
42 | ||
43 | #define NO_LEGACY 0 | |
fb065cd9 | 44 | #define SYNC_START_TIMEOUT (10 * 60) /* 10 minutes */ |
8722ff8c | 45 | |
f730e3dc | 46 | MODULE_DESCRIPTION("IBM Flash Adapter 900GB Full Height Device Driver"); |
9bb3c446 | 47 | MODULE_AUTHOR("Joshua Morris/Philip Kelleher, IBM"); |
8722ff8c | 48 | MODULE_LICENSE("GPL"); |
49 | MODULE_VERSION(DRIVER_VERSION); | |
50 | ||
51 | static unsigned int force_legacy = NO_LEGACY; | |
52 | module_param(force_legacy, uint, 0444); | |
53 | MODULE_PARM_DESC(force_legacy, "Force the use of legacy type PCI interrupts"); | |
54 | ||
fb065cd9 PK |
55 | static unsigned int sync_start = 1; |
56 | module_param(sync_start, uint, 0444); | |
57 | MODULE_PARM_DESC(sync_start, "On by Default: Driver load will not complete " | |
58 | "until the card startup has completed."); | |
59 | ||
8722ff8c | 60 | static DEFINE_IDA(rsxx_disk_ida); |
61 | static DEFINE_SPINLOCK(rsxx_ida_lock); | |
62 | ||
36f988e9 PK |
63 | /* --------------------Debugfs Setup ------------------- */ |
64 | ||
36f988e9 PK |
65 | static int rsxx_attr_pci_regs_show(struct seq_file *m, void *p) |
66 | { | |
67 | struct rsxx_cardinfo *card = m->private; | |
68 | ||
69 | seq_printf(m, "HWID 0x%08x\n", | |
70 | ioread32(card->regmap + HWID)); | |
71 | seq_printf(m, "SCRATCH 0x%08x\n", | |
72 | ioread32(card->regmap + SCRATCH)); | |
73 | seq_printf(m, "IER 0x%08x\n", | |
74 | ioread32(card->regmap + IER)); | |
75 | seq_printf(m, "IPR 0x%08x\n", | |
76 | ioread32(card->regmap + IPR)); | |
77 | seq_printf(m, "CREG_CMD 0x%08x\n", | |
78 | ioread32(card->regmap + CREG_CMD)); | |
79 | seq_printf(m, "CREG_ADD 0x%08x\n", | |
80 | ioread32(card->regmap + CREG_ADD)); | |
81 | seq_printf(m, "CREG_CNT 0x%08x\n", | |
82 | ioread32(card->regmap + CREG_CNT)); | |
83 | seq_printf(m, "CREG_STAT 0x%08x\n", | |
84 | ioread32(card->regmap + CREG_STAT)); | |
85 | seq_printf(m, "CREG_DATA0 0x%08x\n", | |
86 | ioread32(card->regmap + CREG_DATA0)); | |
87 | seq_printf(m, "CREG_DATA1 0x%08x\n", | |
88 | ioread32(card->regmap + CREG_DATA1)); | |
89 | seq_printf(m, "CREG_DATA2 0x%08x\n", | |
90 | ioread32(card->regmap + CREG_DATA2)); | |
91 | seq_printf(m, "CREG_DATA3 0x%08x\n", | |
92 | ioread32(card->regmap + CREG_DATA3)); | |
93 | seq_printf(m, "CREG_DATA4 0x%08x\n", | |
94 | ioread32(card->regmap + CREG_DATA4)); | |
95 | seq_printf(m, "CREG_DATA5 0x%08x\n", | |
96 | ioread32(card->regmap + CREG_DATA5)); | |
97 | seq_printf(m, "CREG_DATA6 0x%08x\n", | |
98 | ioread32(card->regmap + CREG_DATA6)); | |
99 | seq_printf(m, "CREG_DATA7 0x%08x\n", | |
100 | ioread32(card->regmap + CREG_DATA7)); | |
101 | seq_printf(m, "INTR_COAL 0x%08x\n", | |
102 | ioread32(card->regmap + INTR_COAL)); | |
103 | seq_printf(m, "HW_ERROR 0x%08x\n", | |
104 | ioread32(card->regmap + HW_ERROR)); | |
105 | seq_printf(m, "DEBUG0 0x%08x\n", | |
106 | ioread32(card->regmap + PCI_DEBUG0)); | |
107 | seq_printf(m, "DEBUG1 0x%08x\n", | |
108 | ioread32(card->regmap + PCI_DEBUG1)); | |
109 | seq_printf(m, "DEBUG2 0x%08x\n", | |
110 | ioread32(card->regmap + PCI_DEBUG2)); | |
111 | seq_printf(m, "DEBUG3 0x%08x\n", | |
112 | ioread32(card->regmap + PCI_DEBUG3)); | |
113 | seq_printf(m, "DEBUG4 0x%08x\n", | |
114 | ioread32(card->regmap + PCI_DEBUG4)); | |
115 | seq_printf(m, "DEBUG5 0x%08x\n", | |
116 | ioread32(card->regmap + PCI_DEBUG5)); | |
117 | seq_printf(m, "DEBUG6 0x%08x\n", | |
118 | ioread32(card->regmap + PCI_DEBUG6)); | |
119 | seq_printf(m, "DEBUG7 0x%08x\n", | |
120 | ioread32(card->regmap + PCI_DEBUG7)); | |
121 | seq_printf(m, "RECONFIG 0x%08x\n", | |
122 | ioread32(card->regmap + PCI_RECONFIG)); | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
127 | static int rsxx_attr_stats_show(struct seq_file *m, void *p) | |
128 | { | |
129 | struct rsxx_cardinfo *card = m->private; | |
130 | int i; | |
131 | ||
132 | for (i = 0; i < card->n_targets; i++) { | |
133 | seq_printf(m, "Ctrl %d CRC Errors = %d\n", | |
134 | i, card->ctrl[i].stats.crc_errors); | |
135 | seq_printf(m, "Ctrl %d Hard Errors = %d\n", | |
136 | i, card->ctrl[i].stats.hard_errors); | |
137 | seq_printf(m, "Ctrl %d Soft Errors = %d\n", | |
138 | i, card->ctrl[i].stats.soft_errors); | |
139 | seq_printf(m, "Ctrl %d Writes Issued = %d\n", | |
140 | i, card->ctrl[i].stats.writes_issued); | |
141 | seq_printf(m, "Ctrl %d Writes Failed = %d\n", | |
142 | i, card->ctrl[i].stats.writes_failed); | |
143 | seq_printf(m, "Ctrl %d Reads Issued = %d\n", | |
144 | i, card->ctrl[i].stats.reads_issued); | |
145 | seq_printf(m, "Ctrl %d Reads Failed = %d\n", | |
146 | i, card->ctrl[i].stats.reads_failed); | |
147 | seq_printf(m, "Ctrl %d Reads Retried = %d\n", | |
148 | i, card->ctrl[i].stats.reads_retried); | |
149 | seq_printf(m, "Ctrl %d Discards Issued = %d\n", | |
150 | i, card->ctrl[i].stats.discards_issued); | |
151 | seq_printf(m, "Ctrl %d Discards Failed = %d\n", | |
152 | i, card->ctrl[i].stats.discards_failed); | |
153 | seq_printf(m, "Ctrl %d DMA SW Errors = %d\n", | |
154 | i, card->ctrl[i].stats.dma_sw_err); | |
155 | seq_printf(m, "Ctrl %d DMA HW Faults = %d\n", | |
156 | i, card->ctrl[i].stats.dma_hw_fault); | |
157 | seq_printf(m, "Ctrl %d DMAs Cancelled = %d\n", | |
158 | i, card->ctrl[i].stats.dma_cancelled); | |
159 | seq_printf(m, "Ctrl %d SW Queue Depth = %d\n", | |
160 | i, card->ctrl[i].stats.sw_q_depth); | |
161 | seq_printf(m, "Ctrl %d HW Queue Depth = %d\n", | |
162 | i, atomic_read(&card->ctrl[i].stats.hw_q_depth)); | |
163 | } | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
168 | static int rsxx_attr_stats_open(struct inode *inode, struct file *file) | |
169 | { | |
170 | return single_open(file, rsxx_attr_stats_show, inode->i_private); | |
171 | } | |
172 | ||
173 | static int rsxx_attr_pci_regs_open(struct inode *inode, struct file *file) | |
174 | { | |
175 | return single_open(file, rsxx_attr_pci_regs_show, inode->i_private); | |
176 | } | |
177 | ||
178 | static ssize_t rsxx_cram_read(struct file *fp, char __user *ubuf, | |
179 | size_t cnt, loff_t *ppos) | |
180 | { | |
8e3fb059 | 181 | struct rsxx_cardinfo *card = file_inode(fp)->i_private; |
36f988e9 | 182 | char *buf; |
8e3fb059 | 183 | ssize_t st; |
36f988e9 | 184 | |
8e3fb059 | 185 | buf = kzalloc(cnt, GFP_KERNEL); |
36f988e9 PK |
186 | if (!buf) |
187 | return -ENOMEM; | |
188 | ||
8e3fb059 AV |
189 | st = rsxx_creg_read(card, CREG_ADD_CRAM + (u32)*ppos, cnt, buf, 1); |
190 | if (!st) | |
191 | st = copy_to_user(ubuf, buf, cnt); | |
192 | kfree(buf); | |
36f988e9 PK |
193 | if (st) |
194 | return st; | |
8e3fb059 | 195 | *ppos += cnt; |
36f988e9 PK |
196 | return cnt; |
197 | } | |
198 | ||
199 | static ssize_t rsxx_cram_write(struct file *fp, const char __user *ubuf, | |
200 | size_t cnt, loff_t *ppos) | |
201 | { | |
8e3fb059 | 202 | struct rsxx_cardinfo *card = file_inode(fp)->i_private; |
36f988e9 | 203 | char *buf; |
8e3fb059 | 204 | ssize_t st; |
36f988e9 | 205 | |
820351f0 AV |
206 | buf = memdup_user(ubuf, cnt); |
207 | if (IS_ERR(buf)) | |
208 | return PTR_ERR(buf); | |
36f988e9 | 209 | |
820351f0 | 210 | st = rsxx_creg_write(card, CREG_ADD_CRAM + (u32)*ppos, cnt, buf, 1); |
8e3fb059 | 211 | kfree(buf); |
36f988e9 PK |
212 | if (st) |
213 | return st; | |
8e3fb059 | 214 | *ppos += cnt; |
36f988e9 PK |
215 | return cnt; |
216 | } | |
217 | ||
36f988e9 PK |
218 | static const struct file_operations debugfs_cram_fops = { |
219 | .owner = THIS_MODULE, | |
36f988e9 PK |
220 | .read = rsxx_cram_read, |
221 | .write = rsxx_cram_write, | |
36f988e9 PK |
222 | }; |
223 | ||
224 | static const struct file_operations debugfs_stats_fops = { | |
225 | .owner = THIS_MODULE, | |
226 | .open = rsxx_attr_stats_open, | |
227 | .read = seq_read, | |
228 | .llseek = seq_lseek, | |
229 | .release = single_release, | |
230 | }; | |
231 | ||
232 | static const struct file_operations debugfs_pci_regs_fops = { | |
233 | .owner = THIS_MODULE, | |
234 | .open = rsxx_attr_pci_regs_open, | |
235 | .read = seq_read, | |
236 | .llseek = seq_lseek, | |
237 | .release = single_release, | |
238 | }; | |
239 | ||
240 | static void rsxx_debugfs_dev_new(struct rsxx_cardinfo *card) | |
241 | { | |
242 | struct dentry *debugfs_stats; | |
243 | struct dentry *debugfs_pci_regs; | |
244 | struct dentry *debugfs_cram; | |
245 | ||
246 | card->debugfs_dir = debugfs_create_dir(card->gendisk->disk_name, NULL); | |
247 | if (IS_ERR_OR_NULL(card->debugfs_dir)) | |
248 | goto failed_debugfs_dir; | |
249 | ||
250 | debugfs_stats = debugfs_create_file("stats", S_IRUGO, | |
251 | card->debugfs_dir, card, | |
252 | &debugfs_stats_fops); | |
253 | if (IS_ERR_OR_NULL(debugfs_stats)) | |
254 | goto failed_debugfs_stats; | |
255 | ||
256 | debugfs_pci_regs = debugfs_create_file("pci_regs", S_IRUGO, | |
257 | card->debugfs_dir, card, | |
258 | &debugfs_pci_regs_fops); | |
259 | if (IS_ERR_OR_NULL(debugfs_pci_regs)) | |
260 | goto failed_debugfs_pci_regs; | |
261 | ||
262 | debugfs_cram = debugfs_create_file("cram", S_IRUGO | S_IWUSR, | |
263 | card->debugfs_dir, card, | |
264 | &debugfs_cram_fops); | |
265 | if (IS_ERR_OR_NULL(debugfs_cram)) | |
266 | goto failed_debugfs_cram; | |
267 | ||
268 | return; | |
269 | failed_debugfs_cram: | |
270 | debugfs_remove(debugfs_pci_regs); | |
271 | failed_debugfs_pci_regs: | |
272 | debugfs_remove(debugfs_stats); | |
273 | failed_debugfs_stats: | |
274 | debugfs_remove(card->debugfs_dir); | |
275 | failed_debugfs_dir: | |
276 | card->debugfs_dir = NULL; | |
277 | } | |
278 | ||
8722ff8c | 279 | /*----------------- Interrupt Control & Handling -------------------*/ |
c95246c3 PK |
280 | |
281 | static void rsxx_mask_interrupts(struct rsxx_cardinfo *card) | |
282 | { | |
283 | card->isr_mask = 0; | |
284 | card->ier_mask = 0; | |
285 | } | |
286 | ||
8722ff8c | 287 | static void __enable_intr(unsigned int *mask, unsigned int intr) |
288 | { | |
289 | *mask |= intr; | |
290 | } | |
291 | ||
292 | static void __disable_intr(unsigned int *mask, unsigned int intr) | |
293 | { | |
294 | *mask &= ~intr; | |
295 | } | |
296 | ||
297 | /* | |
298 | * NOTE: Disabling the IER will disable the hardware interrupt. | |
299 | * Disabling the ISR will disable the software handling of the ISR bit. | |
300 | * | |
301 | * Enable/Disable interrupt functions assume the card->irq_lock | |
302 | * is held by the caller. | |
303 | */ | |
304 | void rsxx_enable_ier(struct rsxx_cardinfo *card, unsigned int intr) | |
305 | { | |
c95246c3 PK |
306 | if (unlikely(card->halt) || |
307 | unlikely(card->eeh_state)) | |
8722ff8c | 308 | return; |
309 | ||
310 | __enable_intr(&card->ier_mask, intr); | |
311 | iowrite32(card->ier_mask, card->regmap + IER); | |
312 | } | |
313 | ||
314 | void rsxx_disable_ier(struct rsxx_cardinfo *card, unsigned int intr) | |
315 | { | |
c95246c3 PK |
316 | if (unlikely(card->eeh_state)) |
317 | return; | |
318 | ||
8722ff8c | 319 | __disable_intr(&card->ier_mask, intr); |
320 | iowrite32(card->ier_mask, card->regmap + IER); | |
321 | } | |
322 | ||
323 | void rsxx_enable_ier_and_isr(struct rsxx_cardinfo *card, | |
324 | unsigned int intr) | |
325 | { | |
c95246c3 PK |
326 | if (unlikely(card->halt) || |
327 | unlikely(card->eeh_state)) | |
8722ff8c | 328 | return; |
329 | ||
330 | __enable_intr(&card->isr_mask, intr); | |
331 | __enable_intr(&card->ier_mask, intr); | |
332 | iowrite32(card->ier_mask, card->regmap + IER); | |
333 | } | |
334 | void rsxx_disable_ier_and_isr(struct rsxx_cardinfo *card, | |
335 | unsigned int intr) | |
336 | { | |
c95246c3 PK |
337 | if (unlikely(card->eeh_state)) |
338 | return; | |
339 | ||
8722ff8c | 340 | __disable_intr(&card->isr_mask, intr); |
341 | __disable_intr(&card->ier_mask, intr); | |
342 | iowrite32(card->ier_mask, card->regmap + IER); | |
343 | } | |
344 | ||
c206c709 | 345 | static irqreturn_t rsxx_isr(int irq, void *pdata) |
8722ff8c | 346 | { |
c206c709 | 347 | struct rsxx_cardinfo *card = pdata; |
8722ff8c | 348 | unsigned int isr; |
349 | int handled = 0; | |
350 | int reread_isr; | |
351 | int i; | |
352 | ||
353 | spin_lock(&card->irq_lock); | |
354 | ||
355 | do { | |
356 | reread_isr = 0; | |
357 | ||
c95246c3 PK |
358 | if (unlikely(card->eeh_state)) |
359 | break; | |
360 | ||
8722ff8c | 361 | isr = ioread32(card->regmap + ISR); |
362 | if (isr == 0xffffffff) { | |
363 | /* | |
364 | * A few systems seem to have an intermittent issue | |
365 | * where PCI reads return all Fs, but retrying the read | |
366 | * a little later will return as expected. | |
367 | */ | |
368 | dev_info(CARD_TO_DEV(card), | |
369 | "ISR = 0xFFFFFFFF, retrying later\n"); | |
370 | break; | |
371 | } | |
372 | ||
373 | isr &= card->isr_mask; | |
374 | if (!isr) | |
375 | break; | |
376 | ||
377 | for (i = 0; i < card->n_targets; i++) { | |
378 | if (isr & CR_INTR_DMA(i)) { | |
379 | if (card->ier_mask & CR_INTR_DMA(i)) { | |
380 | rsxx_disable_ier(card, CR_INTR_DMA(i)); | |
381 | reread_isr = 1; | |
382 | } | |
383 | queue_work(card->ctrl[i].done_wq, | |
384 | &card->ctrl[i].dma_done_work); | |
385 | handled++; | |
386 | } | |
387 | } | |
388 | ||
389 | if (isr & CR_INTR_CREG) { | |
a3299ab1 PK |
390 | queue_work(card->creg_ctrl.creg_wq, |
391 | &card->creg_ctrl.done_work); | |
8722ff8c | 392 | handled++; |
393 | } | |
394 | ||
395 | if (isr & CR_INTR_EVENT) { | |
a3299ab1 | 396 | queue_work(card->event_wq, &card->event_work); |
8722ff8c | 397 | rsxx_disable_ier_and_isr(card, CR_INTR_EVENT); |
398 | handled++; | |
399 | } | |
400 | } while (reread_isr); | |
401 | ||
402 | spin_unlock(&card->irq_lock); | |
403 | ||
404 | return handled ? IRQ_HANDLED : IRQ_NONE; | |
405 | } | |
406 | ||
407 | /*----------------- Card Event Handler -------------------*/ | |
f3791203 | 408 | static const char * const rsxx_card_state_to_str(unsigned int state) |
c206c709 | 409 | { |
f3791203 | 410 | static const char * const state_strings[] = { |
c206c709 PK |
411 | "Unknown", "Shutdown", "Starting", "Formatting", |
412 | "Uninitialized", "Good", "Shutting Down", | |
413 | "Fault", "Read Only Fault", "dStroying" | |
414 | }; | |
415 | ||
416 | return state_strings[ffs(state)]; | |
417 | } | |
418 | ||
8722ff8c | 419 | static void card_state_change(struct rsxx_cardinfo *card, |
420 | unsigned int new_state) | |
421 | { | |
422 | int st; | |
423 | ||
424 | dev_info(CARD_TO_DEV(card), | |
425 | "card state change detected.(%s -> %s)\n", | |
426 | rsxx_card_state_to_str(card->state), | |
427 | rsxx_card_state_to_str(new_state)); | |
428 | ||
429 | card->state = new_state; | |
430 | ||
431 | /* Don't attach DMA interfaces if the card has an invalid config */ | |
432 | if (!card->config_valid) | |
433 | return; | |
434 | ||
435 | switch (new_state) { | |
436 | case CARD_STATE_RD_ONLY_FAULT: | |
437 | dev_crit(CARD_TO_DEV(card), | |
438 | "Hardware has entered read-only mode!\n"); | |
439 | /* | |
440 | * Fall through so the DMA devices can be attached and | |
441 | * the user can attempt to pull off their data. | |
442 | */ | |
443 | case CARD_STATE_GOOD: | |
444 | st = rsxx_get_card_size8(card, &card->size8); | |
445 | if (st) | |
446 | dev_err(CARD_TO_DEV(card), | |
447 | "Failed attaching DMA devices\n"); | |
448 | ||
449 | if (card->config_valid) | |
450 | set_capacity(card->gendisk, card->size8 >> 9); | |
451 | break; | |
452 | ||
453 | case CARD_STATE_FAULT: | |
454 | dev_crit(CARD_TO_DEV(card), | |
455 | "Hardware Fault reported!\n"); | |
456 | /* Fall through. */ | |
457 | ||
458 | /* Everything else, detach DMA interface if it's attached. */ | |
459 | case CARD_STATE_SHUTDOWN: | |
460 | case CARD_STATE_STARTING: | |
461 | case CARD_STATE_FORMATTING: | |
462 | case CARD_STATE_UNINITIALIZED: | |
463 | case CARD_STATE_SHUTTING_DOWN: | |
464 | /* | |
465 | * dStroy is a term coined by marketing to represent the low level | |
466 | * secure erase. | |
467 | */ | |
468 | case CARD_STATE_DSTROYING: | |
469 | set_capacity(card->gendisk, 0); | |
470 | break; | |
471 | } | |
472 | } | |
473 | ||
474 | static void card_event_handler(struct work_struct *work) | |
475 | { | |
476 | struct rsxx_cardinfo *card; | |
477 | unsigned int state; | |
478 | unsigned long flags; | |
479 | int st; | |
480 | ||
481 | card = container_of(work, struct rsxx_cardinfo, event_work); | |
482 | ||
483 | if (unlikely(card->halt)) | |
484 | return; | |
485 | ||
486 | /* | |
487 | * Enable the interrupt now to avoid any weird race conditions where a | |
488 | * state change might occur while rsxx_get_card_state() is | |
489 | * processing a returned creg cmd. | |
490 | */ | |
491 | spin_lock_irqsave(&card->irq_lock, flags); | |
492 | rsxx_enable_ier_and_isr(card, CR_INTR_EVENT); | |
493 | spin_unlock_irqrestore(&card->irq_lock, flags); | |
494 | ||
495 | st = rsxx_get_card_state(card, &state); | |
496 | if (st) { | |
497 | dev_info(CARD_TO_DEV(card), | |
498 | "Failed reading state after event.\n"); | |
499 | return; | |
500 | } | |
501 | ||
502 | if (card->state != state) | |
503 | card_state_change(card, state); | |
504 | ||
505 | if (card->creg_ctrl.creg_stats.stat & CREG_STAT_LOG_PENDING) | |
506 | rsxx_read_hw_log(card); | |
507 | } | |
508 | ||
8722ff8c | 509 | /*----------------- Card Operations -------------------*/ |
510 | static int card_shutdown(struct rsxx_cardinfo *card) | |
511 | { | |
512 | unsigned int state; | |
513 | signed long start; | |
514 | const int timeout = msecs_to_jiffies(120000); | |
515 | int st; | |
516 | ||
517 | /* We can't issue a shutdown if the card is in a transition state */ | |
518 | start = jiffies; | |
519 | do { | |
520 | st = rsxx_get_card_state(card, &state); | |
521 | if (st) | |
522 | return st; | |
523 | } while (state == CARD_STATE_STARTING && | |
524 | (jiffies - start < timeout)); | |
525 | ||
526 | if (state == CARD_STATE_STARTING) | |
527 | return -ETIMEDOUT; | |
528 | ||
529 | /* Only issue a shutdown if we need to */ | |
530 | if ((state != CARD_STATE_SHUTTING_DOWN) && | |
531 | (state != CARD_STATE_SHUTDOWN)) { | |
532 | st = rsxx_issue_card_cmd(card, CARD_CMD_SHUTDOWN); | |
533 | if (st) | |
534 | return st; | |
535 | } | |
536 | ||
537 | start = jiffies; | |
538 | do { | |
539 | st = rsxx_get_card_state(card, &state); | |
540 | if (st) | |
541 | return st; | |
542 | } while (state != CARD_STATE_SHUTDOWN && | |
543 | (jiffies - start < timeout)); | |
544 | ||
545 | if (state != CARD_STATE_SHUTDOWN) | |
546 | return -ETIMEDOUT; | |
547 | ||
548 | return 0; | |
549 | } | |
550 | ||
4dcaf472 | 551 | static int rsxx_eeh_frozen(struct pci_dev *dev) |
c95246c3 PK |
552 | { |
553 | struct rsxx_cardinfo *card = pci_get_drvdata(dev); | |
554 | int i; | |
4dcaf472 | 555 | int st; |
c95246c3 | 556 | |
f730e3dc | 557 | dev_warn(&dev->dev, "IBM Flash Adapter PCI: preparing for slot reset.\n"); |
c95246c3 PK |
558 | |
559 | card->eeh_state = 1; | |
560 | rsxx_mask_interrupts(card); | |
561 | ||
562 | /* | |
563 | * We need to guarantee that the write for eeh_state and masking | |
564 | * interrupts does not become reordered. This will prevent a possible | |
565 | * race condition with the EEH code. | |
566 | */ | |
567 | wmb(); | |
568 | ||
569 | pci_disable_device(dev); | |
570 | ||
4dcaf472 PK |
571 | st = rsxx_eeh_save_issued_dmas(card); |
572 | if (st) | |
573 | return st; | |
c95246c3 PK |
574 | |
575 | rsxx_eeh_save_issued_creg(card); | |
576 | ||
577 | for (i = 0; i < card->n_targets; i++) { | |
578 | if (card->ctrl[i].status.buf) | |
579 | pci_free_consistent(card->dev, STATUS_BUFFER_SIZE8, | |
580 | card->ctrl[i].status.buf, | |
581 | card->ctrl[i].status.dma_addr); | |
582 | if (card->ctrl[i].cmd.buf) | |
583 | pci_free_consistent(card->dev, COMMAND_BUFFER_SIZE8, | |
584 | card->ctrl[i].cmd.buf, | |
585 | card->ctrl[i].cmd.dma_addr); | |
586 | } | |
4dcaf472 PK |
587 | |
588 | return 0; | |
c95246c3 PK |
589 | } |
590 | ||
591 | static void rsxx_eeh_failure(struct pci_dev *dev) | |
592 | { | |
593 | struct rsxx_cardinfo *card = pci_get_drvdata(dev); | |
594 | int i; | |
0ab4743e | 595 | int cnt = 0; |
c95246c3 | 596 | |
f730e3dc | 597 | dev_err(&dev->dev, "IBM Flash Adapter PCI: disabling failed card.\n"); |
c95246c3 PK |
598 | |
599 | card->eeh_state = 1; | |
0ab4743e | 600 | card->halt = 1; |
c95246c3 | 601 | |
0ab4743e PK |
602 | for (i = 0; i < card->n_targets; i++) { |
603 | spin_lock_bh(&card->ctrl[i].queue_lock); | |
604 | cnt = rsxx_cleanup_dma_queue(&card->ctrl[i], | |
e5feab22 PK |
605 | &card->ctrl[i].queue, |
606 | COMPLETE_DMA); | |
0ab4743e PK |
607 | spin_unlock_bh(&card->ctrl[i].queue_lock); |
608 | ||
609 | cnt += rsxx_dma_cancel(&card->ctrl[i]); | |
c95246c3 | 610 | |
0ab4743e PK |
611 | if (cnt) |
612 | dev_info(CARD_TO_DEV(card), | |
613 | "Freed %d queued DMAs on channel %d\n", | |
614 | cnt, card->ctrl[i].id); | |
615 | } | |
c95246c3 PK |
616 | } |
617 | ||
618 | static int rsxx_eeh_fifo_flush_poll(struct rsxx_cardinfo *card) | |
619 | { | |
620 | unsigned int status; | |
621 | int iter = 0; | |
622 | ||
623 | /* We need to wait for the hardware to reset */ | |
624 | while (iter++ < 10) { | |
625 | status = ioread32(card->regmap + PCI_RECONFIG); | |
626 | ||
627 | if (status & RSXX_FLUSH_BUSY) { | |
628 | ssleep(1); | |
629 | continue; | |
630 | } | |
631 | ||
632 | if (status & RSXX_FLUSH_TIMEOUT) | |
633 | dev_warn(CARD_TO_DEV(card), "HW: flash controller timeout\n"); | |
634 | return 0; | |
635 | } | |
636 | ||
637 | /* Hardware failed resetting itself. */ | |
638 | return -1; | |
639 | } | |
640 | ||
641 | static pci_ers_result_t rsxx_error_detected(struct pci_dev *dev, | |
642 | enum pci_channel_state error) | |
643 | { | |
4dcaf472 PK |
644 | int st; |
645 | ||
c95246c3 PK |
646 | if (dev->revision < RSXX_EEH_SUPPORT) |
647 | return PCI_ERS_RESULT_NONE; | |
648 | ||
649 | if (error == pci_channel_io_perm_failure) { | |
650 | rsxx_eeh_failure(dev); | |
651 | return PCI_ERS_RESULT_DISCONNECT; | |
652 | } | |
653 | ||
4dcaf472 PK |
654 | st = rsxx_eeh_frozen(dev); |
655 | if (st) { | |
656 | dev_err(&dev->dev, "Slot reset setup failed\n"); | |
657 | rsxx_eeh_failure(dev); | |
658 | return PCI_ERS_RESULT_DISCONNECT; | |
659 | } | |
660 | ||
c95246c3 PK |
661 | return PCI_ERS_RESULT_NEED_RESET; |
662 | } | |
663 | ||
664 | static pci_ers_result_t rsxx_slot_reset(struct pci_dev *dev) | |
665 | { | |
666 | struct rsxx_cardinfo *card = pci_get_drvdata(dev); | |
667 | unsigned long flags; | |
668 | int i; | |
669 | int st; | |
670 | ||
671 | dev_warn(&dev->dev, | |
f730e3dc | 672 | "IBM Flash Adapter PCI: recovering from slot reset.\n"); |
c95246c3 PK |
673 | |
674 | st = pci_enable_device(dev); | |
675 | if (st) | |
676 | goto failed_hw_setup; | |
677 | ||
678 | pci_set_master(dev); | |
679 | ||
680 | st = rsxx_eeh_fifo_flush_poll(card); | |
681 | if (st) | |
682 | goto failed_hw_setup; | |
683 | ||
684 | rsxx_dma_queue_reset(card); | |
685 | ||
686 | for (i = 0; i < card->n_targets; i++) { | |
687 | st = rsxx_hw_buffers_init(dev, &card->ctrl[i]); | |
688 | if (st) | |
689 | goto failed_hw_buffers_init; | |
690 | } | |
691 | ||
692 | if (card->config_valid) | |
693 | rsxx_dma_configure(card); | |
694 | ||
695 | /* Clears the ISR register from spurious interrupts */ | |
696 | st = ioread32(card->regmap + ISR); | |
697 | ||
698 | card->eeh_state = 0; | |
699 | ||
c95246c3 PK |
700 | spin_lock_irqsave(&card->irq_lock, flags); |
701 | if (card->n_targets & RSXX_MAX_TARGETS) | |
702 | rsxx_enable_ier_and_isr(card, CR_INTR_ALL_G); | |
703 | else | |
704 | rsxx_enable_ier_and_isr(card, CR_INTR_ALL_C); | |
705 | spin_unlock_irqrestore(&card->irq_lock, flags); | |
706 | ||
707 | rsxx_kick_creg_queue(card); | |
708 | ||
709 | for (i = 0; i < card->n_targets; i++) { | |
710 | spin_lock(&card->ctrl[i].queue_lock); | |
711 | if (list_empty(&card->ctrl[i].queue)) { | |
712 | spin_unlock(&card->ctrl[i].queue_lock); | |
713 | continue; | |
714 | } | |
715 | spin_unlock(&card->ctrl[i].queue_lock); | |
716 | ||
717 | queue_work(card->ctrl[i].issue_wq, | |
718 | &card->ctrl[i].issue_dma_work); | |
719 | } | |
720 | ||
f730e3dc | 721 | dev_info(&dev->dev, "IBM Flash Adapter PCI: recovery complete.\n"); |
c95246c3 PK |
722 | |
723 | return PCI_ERS_RESULT_RECOVERED; | |
724 | ||
725 | failed_hw_buffers_init: | |
c95246c3 PK |
726 | for (i = 0; i < card->n_targets; i++) { |
727 | if (card->ctrl[i].status.buf) | |
728 | pci_free_consistent(card->dev, | |
729 | STATUS_BUFFER_SIZE8, | |
730 | card->ctrl[i].status.buf, | |
731 | card->ctrl[i].status.dma_addr); | |
732 | if (card->ctrl[i].cmd.buf) | |
733 | pci_free_consistent(card->dev, | |
734 | COMMAND_BUFFER_SIZE8, | |
735 | card->ctrl[i].cmd.buf, | |
736 | card->ctrl[i].cmd.dma_addr); | |
737 | } | |
738 | failed_hw_setup: | |
739 | rsxx_eeh_failure(dev); | |
740 | return PCI_ERS_RESULT_DISCONNECT; | |
741 | ||
742 | } | |
743 | ||
8722ff8c | 744 | /*----------------- Driver Initialization & Setup -------------------*/ |
745 | /* Returns: 0 if the driver is compatible with the device | |
746 | -1 if the driver is NOT compatible with the device */ | |
747 | static int rsxx_compatibility_check(struct rsxx_cardinfo *card) | |
748 | { | |
749 | unsigned char pci_rev; | |
750 | ||
751 | pci_read_config_byte(card->dev, PCI_REVISION_ID, &pci_rev); | |
752 | ||
753 | if (pci_rev > RS70_PCI_REV_SUPPORTED) | |
754 | return -1; | |
755 | return 0; | |
756 | } | |
757 | ||
82bed4d5 | 758 | static int rsxx_pci_probe(struct pci_dev *dev, |
8722ff8c | 759 | const struct pci_device_id *id) |
760 | { | |
761 | struct rsxx_cardinfo *card; | |
8722ff8c | 762 | int st; |
fb065cd9 | 763 | unsigned int sync_timeout; |
8722ff8c | 764 | |
765 | dev_info(&dev->dev, "PCI-Flash SSD discovered\n"); | |
766 | ||
767 | card = kzalloc(sizeof(*card), GFP_KERNEL); | |
768 | if (!card) | |
769 | return -ENOMEM; | |
770 | ||
771 | card->dev = dev; | |
772 | pci_set_drvdata(dev, card); | |
773 | ||
774 | do { | |
775 | if (!ida_pre_get(&rsxx_disk_ida, GFP_KERNEL)) { | |
776 | st = -ENOMEM; | |
777 | goto failed_ida_get; | |
778 | } | |
779 | ||
780 | spin_lock(&rsxx_ida_lock); | |
781 | st = ida_get_new(&rsxx_disk_ida, &card->disk_id); | |
782 | spin_unlock(&rsxx_ida_lock); | |
783 | } while (st == -EAGAIN); | |
784 | ||
785 | if (st) | |
786 | goto failed_ida_get; | |
787 | ||
788 | st = pci_enable_device(dev); | |
789 | if (st) | |
790 | goto failed_enable; | |
791 | ||
792 | pci_set_master(dev); | |
793 | pci_set_dma_max_seg_size(dev, RSXX_HW_BLK_SIZE); | |
794 | ||
795 | st = pci_set_dma_mask(dev, DMA_BIT_MASK(64)); | |
796 | if (st) { | |
797 | dev_err(CARD_TO_DEV(card), | |
798 | "No usable DMA configuration,aborting\n"); | |
799 | goto failed_dma_mask; | |
800 | } | |
801 | ||
802 | st = pci_request_regions(dev, DRIVER_NAME); | |
803 | if (st) { | |
804 | dev_err(CARD_TO_DEV(card), | |
805 | "Failed to request memory region\n"); | |
806 | goto failed_request_regions; | |
807 | } | |
808 | ||
809 | if (pci_resource_len(dev, 0) == 0) { | |
810 | dev_err(CARD_TO_DEV(card), "BAR0 has length 0!\n"); | |
811 | st = -ENOMEM; | |
812 | goto failed_iomap; | |
813 | } | |
814 | ||
815 | card->regmap = pci_iomap(dev, 0, 0); | |
816 | if (!card->regmap) { | |
817 | dev_err(CARD_TO_DEV(card), "Failed to map BAR0\n"); | |
818 | st = -ENOMEM; | |
819 | goto failed_iomap; | |
820 | } | |
821 | ||
822 | spin_lock_init(&card->irq_lock); | |
823 | card->halt = 0; | |
c95246c3 | 824 | card->eeh_state = 0; |
8722ff8c | 825 | |
c206c709 | 826 | spin_lock_irq(&card->irq_lock); |
8722ff8c | 827 | rsxx_disable_ier_and_isr(card, CR_INTR_ALL); |
c206c709 | 828 | spin_unlock_irq(&card->irq_lock); |
8722ff8c | 829 | |
830 | if (!force_legacy) { | |
831 | st = pci_enable_msi(dev); | |
832 | if (st) | |
833 | dev_warn(CARD_TO_DEV(card), | |
834 | "Failed to enable MSI\n"); | |
835 | } | |
836 | ||
baf37812 | 837 | st = request_irq(dev->irq, rsxx_isr, IRQF_SHARED, |
8722ff8c | 838 | DRIVER_NAME, card); |
839 | if (st) { | |
840 | dev_err(CARD_TO_DEV(card), | |
841 | "Failed requesting IRQ%d\n", dev->irq); | |
842 | goto failed_irq; | |
843 | } | |
844 | ||
845 | /************* Setup Processor Command Interface *************/ | |
a3299ab1 PK |
846 | st = rsxx_creg_setup(card); |
847 | if (st) { | |
848 | dev_err(CARD_TO_DEV(card), "Failed to setup creg interface.\n"); | |
849 | goto failed_creg_setup; | |
850 | } | |
8722ff8c | 851 | |
c206c709 | 852 | spin_lock_irq(&card->irq_lock); |
8722ff8c | 853 | rsxx_enable_ier_and_isr(card, CR_INTR_CREG); |
c206c709 | 854 | spin_unlock_irq(&card->irq_lock); |
8722ff8c | 855 | |
856 | st = rsxx_compatibility_check(card); | |
857 | if (st) { | |
858 | dev_warn(CARD_TO_DEV(card), | |
859 | "Incompatible driver detected. Please update the driver.\n"); | |
860 | st = -EINVAL; | |
861 | goto failed_compatiblity_check; | |
862 | } | |
863 | ||
864 | /************* Load Card Config *************/ | |
865 | st = rsxx_load_config(card); | |
866 | if (st) | |
867 | dev_err(CARD_TO_DEV(card), | |
868 | "Failed loading card config\n"); | |
869 | ||
870 | /************* Setup DMA Engine *************/ | |
871 | st = rsxx_get_num_targets(card, &card->n_targets); | |
872 | if (st) | |
873 | dev_info(CARD_TO_DEV(card), | |
874 | "Failed reading the number of DMA targets\n"); | |
875 | ||
876 | card->ctrl = kzalloc(card->n_targets * sizeof(*card->ctrl), GFP_KERNEL); | |
877 | if (!card->ctrl) { | |
878 | st = -ENOMEM; | |
879 | goto failed_dma_setup; | |
880 | } | |
881 | ||
882 | st = rsxx_dma_setup(card); | |
883 | if (st) { | |
884 | dev_info(CARD_TO_DEV(card), | |
885 | "Failed to setup DMA engine\n"); | |
886 | goto failed_dma_setup; | |
887 | } | |
888 | ||
889 | /************* Setup Card Event Handler *************/ | |
a3299ab1 PK |
890 | card->event_wq = create_singlethread_workqueue(DRIVER_NAME"_event"); |
891 | if (!card->event_wq) { | |
892 | dev_err(CARD_TO_DEV(card), "Failed card event setup.\n"); | |
893 | goto failed_event_handler; | |
894 | } | |
895 | ||
8722ff8c | 896 | INIT_WORK(&card->event_work, card_event_handler); |
897 | ||
898 | st = rsxx_setup_dev(card); | |
899 | if (st) | |
900 | goto failed_create_dev; | |
901 | ||
902 | rsxx_get_card_state(card, &card->state); | |
903 | ||
904 | dev_info(CARD_TO_DEV(card), | |
905 | "card state: %s\n", | |
906 | rsxx_card_state_to_str(card->state)); | |
907 | ||
908 | /* | |
909 | * Now that the DMA Engine and devices have been setup, | |
910 | * we can enable the event interrupt(it kicks off actions in | |
911 | * those layers so we couldn't enable it right away.) | |
912 | */ | |
c206c709 | 913 | spin_lock_irq(&card->irq_lock); |
8722ff8c | 914 | rsxx_enable_ier_and_isr(card, CR_INTR_EVENT); |
c206c709 | 915 | spin_unlock_irq(&card->irq_lock); |
8722ff8c | 916 | |
917 | if (card->state == CARD_STATE_SHUTDOWN) { | |
918 | st = rsxx_issue_card_cmd(card, CARD_CMD_STARTUP); | |
919 | if (st) | |
920 | dev_crit(CARD_TO_DEV(card), | |
921 | "Failed issuing card startup\n"); | |
fb065cd9 PK |
922 | if (sync_start) { |
923 | sync_timeout = SYNC_START_TIMEOUT; | |
924 | ||
925 | dev_info(CARD_TO_DEV(card), | |
926 | "Waiting for card to startup\n"); | |
927 | ||
928 | do { | |
929 | ssleep(1); | |
930 | sync_timeout--; | |
931 | ||
932 | rsxx_get_card_state(card, &card->state); | |
933 | } while (sync_timeout && | |
934 | (card->state == CARD_STATE_STARTING)); | |
935 | ||
936 | if (card->state == CARD_STATE_STARTING) { | |
937 | dev_warn(CARD_TO_DEV(card), | |
938 | "Card startup timed out\n"); | |
939 | card->size8 = 0; | |
940 | } else { | |
941 | dev_info(CARD_TO_DEV(card), | |
942 | "card state: %s\n", | |
943 | rsxx_card_state_to_str(card->state)); | |
944 | st = rsxx_get_card_size8(card, &card->size8); | |
945 | if (st) | |
946 | card->size8 = 0; | |
947 | } | |
948 | } | |
8722ff8c | 949 | } else if (card->state == CARD_STATE_GOOD || |
950 | card->state == CARD_STATE_RD_ONLY_FAULT) { | |
951 | st = rsxx_get_card_size8(card, &card->size8); | |
952 | if (st) | |
953 | card->size8 = 0; | |
954 | } | |
955 | ||
956 | rsxx_attach_dev(card); | |
957 | ||
36f988e9 PK |
958 | /************* Setup Debugfs *************/ |
959 | rsxx_debugfs_dev_new(card); | |
960 | ||
8722ff8c | 961 | return 0; |
962 | ||
963 | failed_create_dev: | |
a3299ab1 PK |
964 | destroy_workqueue(card->event_wq); |
965 | card->event_wq = NULL; | |
966 | failed_event_handler: | |
8722ff8c | 967 | rsxx_dma_destroy(card); |
968 | failed_dma_setup: | |
969 | failed_compatiblity_check: | |
a3299ab1 PK |
970 | destroy_workqueue(card->creg_ctrl.creg_wq); |
971 | card->creg_ctrl.creg_wq = NULL; | |
972 | failed_creg_setup: | |
c206c709 | 973 | spin_lock_irq(&card->irq_lock); |
8722ff8c | 974 | rsxx_disable_ier_and_isr(card, CR_INTR_ALL); |
c206c709 | 975 | spin_unlock_irq(&card->irq_lock); |
8722ff8c | 976 | free_irq(dev->irq, card); |
977 | if (!force_legacy) | |
978 | pci_disable_msi(dev); | |
979 | failed_irq: | |
980 | pci_iounmap(dev, card->regmap); | |
981 | failed_iomap: | |
982 | pci_release_regions(dev); | |
983 | failed_request_regions: | |
984 | failed_dma_mask: | |
985 | pci_disable_device(dev); | |
986 | failed_enable: | |
987 | spin_lock(&rsxx_ida_lock); | |
988 | ida_remove(&rsxx_disk_ida, card->disk_id); | |
989 | spin_unlock(&rsxx_ida_lock); | |
990 | failed_ida_get: | |
991 | kfree(card); | |
992 | ||
993 | return st; | |
994 | } | |
995 | ||
82bed4d5 | 996 | static void rsxx_pci_remove(struct pci_dev *dev) |
8722ff8c | 997 | { |
998 | struct rsxx_cardinfo *card = pci_get_drvdata(dev); | |
999 | unsigned long flags; | |
1000 | int st; | |
1001 | int i; | |
1002 | ||
1003 | if (!card) | |
1004 | return; | |
1005 | ||
1006 | dev_info(CARD_TO_DEV(card), | |
1007 | "Removing PCI-Flash SSD.\n"); | |
1008 | ||
1009 | rsxx_detach_dev(card); | |
1010 | ||
1011 | for (i = 0; i < card->n_targets; i++) { | |
1012 | spin_lock_irqsave(&card->irq_lock, flags); | |
1013 | rsxx_disable_ier_and_isr(card, CR_INTR_DMA(i)); | |
1014 | spin_unlock_irqrestore(&card->irq_lock, flags); | |
1015 | } | |
1016 | ||
1017 | st = card_shutdown(card); | |
1018 | if (st) | |
1019 | dev_crit(CARD_TO_DEV(card), "Shutdown failed!\n"); | |
1020 | ||
1021 | /* Sync outstanding event handlers. */ | |
1022 | spin_lock_irqsave(&card->irq_lock, flags); | |
1023 | rsxx_disable_ier_and_isr(card, CR_INTR_EVENT); | |
1024 | spin_unlock_irqrestore(&card->irq_lock, flags); | |
1025 | ||
8722ff8c | 1026 | cancel_work_sync(&card->event_work); |
1027 | ||
1028 | rsxx_destroy_dev(card); | |
1029 | rsxx_dma_destroy(card); | |
1030 | ||
1031 | spin_lock_irqsave(&card->irq_lock, flags); | |
1032 | rsxx_disable_ier_and_isr(card, CR_INTR_ALL); | |
1033 | spin_unlock_irqrestore(&card->irq_lock, flags); | |
1ebfd109 PK |
1034 | |
1035 | /* Prevent work_structs from re-queuing themselves. */ | |
1036 | card->halt = 1; | |
1037 | ||
36f988e9 PK |
1038 | debugfs_remove_recursive(card->debugfs_dir); |
1039 | ||
8722ff8c | 1040 | free_irq(dev->irq, card); |
1041 | ||
1042 | if (!force_legacy) | |
1043 | pci_disable_msi(dev); | |
1044 | ||
1045 | rsxx_creg_destroy(card); | |
1046 | ||
1047 | pci_iounmap(dev, card->regmap); | |
1048 | ||
1049 | pci_disable_device(dev); | |
1050 | pci_release_regions(dev); | |
1051 | ||
1052 | kfree(card); | |
1053 | } | |
1054 | ||
1055 | static int rsxx_pci_suspend(struct pci_dev *dev, pm_message_t state) | |
1056 | { | |
1057 | /* We don't support suspend at this time. */ | |
1058 | return -ENOSYS; | |
1059 | } | |
1060 | ||
1061 | static void rsxx_pci_shutdown(struct pci_dev *dev) | |
1062 | { | |
1063 | struct rsxx_cardinfo *card = pci_get_drvdata(dev); | |
1064 | unsigned long flags; | |
1065 | int i; | |
1066 | ||
1067 | if (!card) | |
1068 | return; | |
1069 | ||
1070 | dev_info(CARD_TO_DEV(card), "Shutting down PCI-Flash SSD.\n"); | |
1071 | ||
1072 | rsxx_detach_dev(card); | |
1073 | ||
1074 | for (i = 0; i < card->n_targets; i++) { | |
1075 | spin_lock_irqsave(&card->irq_lock, flags); | |
1076 | rsxx_disable_ier_and_isr(card, CR_INTR_DMA(i)); | |
1077 | spin_unlock_irqrestore(&card->irq_lock, flags); | |
1078 | } | |
1079 | ||
1080 | card_shutdown(card); | |
1081 | } | |
1082 | ||
c95246c3 PK |
1083 | static const struct pci_error_handlers rsxx_err_handler = { |
1084 | .error_detected = rsxx_error_detected, | |
1085 | .slot_reset = rsxx_slot_reset, | |
1086 | }; | |
1087 | ||
9baa3c34 | 1088 | static const struct pci_device_id rsxx_pci_ids[] = { |
9bb3c446 PK |
1089 | {PCI_DEVICE(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_FS70_FLASH)}, |
1090 | {PCI_DEVICE(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_FS80_FLASH)}, | |
8722ff8c | 1091 | {0,}, |
1092 | }; | |
1093 | ||
1094 | MODULE_DEVICE_TABLE(pci, rsxx_pci_ids); | |
1095 | ||
1096 | static struct pci_driver rsxx_pci_driver = { | |
1097 | .name = DRIVER_NAME, | |
1098 | .id_table = rsxx_pci_ids, | |
1099 | .probe = rsxx_pci_probe, | |
82bed4d5 | 1100 | .remove = rsxx_pci_remove, |
8722ff8c | 1101 | .suspend = rsxx_pci_suspend, |
1102 | .shutdown = rsxx_pci_shutdown, | |
c95246c3 | 1103 | .err_handler = &rsxx_err_handler, |
8722ff8c | 1104 | }; |
1105 | ||
1106 | static int __init rsxx_core_init(void) | |
1107 | { | |
1108 | int st; | |
1109 | ||
1110 | st = rsxx_dev_init(); | |
1111 | if (st) | |
1112 | return st; | |
1113 | ||
1114 | st = rsxx_dma_init(); | |
1115 | if (st) | |
1116 | goto dma_init_failed; | |
1117 | ||
1118 | st = rsxx_creg_init(); | |
1119 | if (st) | |
1120 | goto creg_init_failed; | |
1121 | ||
1122 | return pci_register_driver(&rsxx_pci_driver); | |
1123 | ||
1124 | creg_init_failed: | |
1125 | rsxx_dma_cleanup(); | |
1126 | dma_init_failed: | |
1127 | rsxx_dev_cleanup(); | |
1128 | ||
1129 | return st; | |
1130 | } | |
1131 | ||
1132 | static void __exit rsxx_core_cleanup(void) | |
1133 | { | |
1134 | pci_unregister_driver(&rsxx_pci_driver); | |
1135 | rsxx_creg_cleanup(); | |
1136 | rsxx_dma_cleanup(); | |
1137 | rsxx_dev_cleanup(); | |
1138 | } | |
1139 | ||
1140 | module_init(rsxx_core_init); | |
1141 | module_exit(rsxx_core_cleanup); |