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 | ||
65 | struct rsxx_cram { | |
66 | u32 f_pos; | |
67 | u32 offset; | |
68 | void *i_private; | |
69 | }; | |
70 | ||
71 | static int rsxx_attr_pci_regs_show(struct seq_file *m, void *p) | |
72 | { | |
73 | struct rsxx_cardinfo *card = m->private; | |
74 | ||
75 | seq_printf(m, "HWID 0x%08x\n", | |
76 | ioread32(card->regmap + HWID)); | |
77 | seq_printf(m, "SCRATCH 0x%08x\n", | |
78 | ioread32(card->regmap + SCRATCH)); | |
79 | seq_printf(m, "IER 0x%08x\n", | |
80 | ioread32(card->regmap + IER)); | |
81 | seq_printf(m, "IPR 0x%08x\n", | |
82 | ioread32(card->regmap + IPR)); | |
83 | seq_printf(m, "CREG_CMD 0x%08x\n", | |
84 | ioread32(card->regmap + CREG_CMD)); | |
85 | seq_printf(m, "CREG_ADD 0x%08x\n", | |
86 | ioread32(card->regmap + CREG_ADD)); | |
87 | seq_printf(m, "CREG_CNT 0x%08x\n", | |
88 | ioread32(card->regmap + CREG_CNT)); | |
89 | seq_printf(m, "CREG_STAT 0x%08x\n", | |
90 | ioread32(card->regmap + CREG_STAT)); | |
91 | seq_printf(m, "CREG_DATA0 0x%08x\n", | |
92 | ioread32(card->regmap + CREG_DATA0)); | |
93 | seq_printf(m, "CREG_DATA1 0x%08x\n", | |
94 | ioread32(card->regmap + CREG_DATA1)); | |
95 | seq_printf(m, "CREG_DATA2 0x%08x\n", | |
96 | ioread32(card->regmap + CREG_DATA2)); | |
97 | seq_printf(m, "CREG_DATA3 0x%08x\n", | |
98 | ioread32(card->regmap + CREG_DATA3)); | |
99 | seq_printf(m, "CREG_DATA4 0x%08x\n", | |
100 | ioread32(card->regmap + CREG_DATA4)); | |
101 | seq_printf(m, "CREG_DATA5 0x%08x\n", | |
102 | ioread32(card->regmap + CREG_DATA5)); | |
103 | seq_printf(m, "CREG_DATA6 0x%08x\n", | |
104 | ioread32(card->regmap + CREG_DATA6)); | |
105 | seq_printf(m, "CREG_DATA7 0x%08x\n", | |
106 | ioread32(card->regmap + CREG_DATA7)); | |
107 | seq_printf(m, "INTR_COAL 0x%08x\n", | |
108 | ioread32(card->regmap + INTR_COAL)); | |
109 | seq_printf(m, "HW_ERROR 0x%08x\n", | |
110 | ioread32(card->regmap + HW_ERROR)); | |
111 | seq_printf(m, "DEBUG0 0x%08x\n", | |
112 | ioread32(card->regmap + PCI_DEBUG0)); | |
113 | seq_printf(m, "DEBUG1 0x%08x\n", | |
114 | ioread32(card->regmap + PCI_DEBUG1)); | |
115 | seq_printf(m, "DEBUG2 0x%08x\n", | |
116 | ioread32(card->regmap + PCI_DEBUG2)); | |
117 | seq_printf(m, "DEBUG3 0x%08x\n", | |
118 | ioread32(card->regmap + PCI_DEBUG3)); | |
119 | seq_printf(m, "DEBUG4 0x%08x\n", | |
120 | ioread32(card->regmap + PCI_DEBUG4)); | |
121 | seq_printf(m, "DEBUG5 0x%08x\n", | |
122 | ioread32(card->regmap + PCI_DEBUG5)); | |
123 | seq_printf(m, "DEBUG6 0x%08x\n", | |
124 | ioread32(card->regmap + PCI_DEBUG6)); | |
125 | seq_printf(m, "DEBUG7 0x%08x\n", | |
126 | ioread32(card->regmap + PCI_DEBUG7)); | |
127 | seq_printf(m, "RECONFIG 0x%08x\n", | |
128 | ioread32(card->regmap + PCI_RECONFIG)); | |
129 | ||
130 | return 0; | |
131 | } | |
132 | ||
133 | static int rsxx_attr_stats_show(struct seq_file *m, void *p) | |
134 | { | |
135 | struct rsxx_cardinfo *card = m->private; | |
136 | int i; | |
137 | ||
138 | for (i = 0; i < card->n_targets; i++) { | |
139 | seq_printf(m, "Ctrl %d CRC Errors = %d\n", | |
140 | i, card->ctrl[i].stats.crc_errors); | |
141 | seq_printf(m, "Ctrl %d Hard Errors = %d\n", | |
142 | i, card->ctrl[i].stats.hard_errors); | |
143 | seq_printf(m, "Ctrl %d Soft Errors = %d\n", | |
144 | i, card->ctrl[i].stats.soft_errors); | |
145 | seq_printf(m, "Ctrl %d Writes Issued = %d\n", | |
146 | i, card->ctrl[i].stats.writes_issued); | |
147 | seq_printf(m, "Ctrl %d Writes Failed = %d\n", | |
148 | i, card->ctrl[i].stats.writes_failed); | |
149 | seq_printf(m, "Ctrl %d Reads Issued = %d\n", | |
150 | i, card->ctrl[i].stats.reads_issued); | |
151 | seq_printf(m, "Ctrl %d Reads Failed = %d\n", | |
152 | i, card->ctrl[i].stats.reads_failed); | |
153 | seq_printf(m, "Ctrl %d Reads Retried = %d\n", | |
154 | i, card->ctrl[i].stats.reads_retried); | |
155 | seq_printf(m, "Ctrl %d Discards Issued = %d\n", | |
156 | i, card->ctrl[i].stats.discards_issued); | |
157 | seq_printf(m, "Ctrl %d Discards Failed = %d\n", | |
158 | i, card->ctrl[i].stats.discards_failed); | |
159 | seq_printf(m, "Ctrl %d DMA SW Errors = %d\n", | |
160 | i, card->ctrl[i].stats.dma_sw_err); | |
161 | seq_printf(m, "Ctrl %d DMA HW Faults = %d\n", | |
162 | i, card->ctrl[i].stats.dma_hw_fault); | |
163 | seq_printf(m, "Ctrl %d DMAs Cancelled = %d\n", | |
164 | i, card->ctrl[i].stats.dma_cancelled); | |
165 | seq_printf(m, "Ctrl %d SW Queue Depth = %d\n", | |
166 | i, card->ctrl[i].stats.sw_q_depth); | |
167 | seq_printf(m, "Ctrl %d HW Queue Depth = %d\n", | |
168 | i, atomic_read(&card->ctrl[i].stats.hw_q_depth)); | |
169 | } | |
170 | ||
171 | return 0; | |
172 | } | |
173 | ||
174 | static int rsxx_attr_stats_open(struct inode *inode, struct file *file) | |
175 | { | |
176 | return single_open(file, rsxx_attr_stats_show, inode->i_private); | |
177 | } | |
178 | ||
179 | static int rsxx_attr_pci_regs_open(struct inode *inode, struct file *file) | |
180 | { | |
181 | return single_open(file, rsxx_attr_pci_regs_show, inode->i_private); | |
182 | } | |
183 | ||
184 | static ssize_t rsxx_cram_read(struct file *fp, char __user *ubuf, | |
185 | size_t cnt, loff_t *ppos) | |
186 | { | |
187 | struct rsxx_cram *info = fp->private_data; | |
188 | struct rsxx_cardinfo *card = info->i_private; | |
189 | char *buf; | |
190 | int st; | |
191 | ||
192 | buf = kzalloc(sizeof(*buf) * cnt, GFP_KERNEL); | |
193 | if (!buf) | |
194 | return -ENOMEM; | |
195 | ||
196 | info->f_pos = (u32)*ppos + info->offset; | |
197 | ||
198 | st = rsxx_creg_read(card, CREG_ADD_CRAM + info->f_pos, cnt, buf, 1); | |
199 | if (st) | |
200 | return st; | |
201 | ||
202 | st = copy_to_user(ubuf, buf, cnt); | |
203 | if (st) | |
204 | return st; | |
205 | ||
206 | info->offset += cnt; | |
207 | ||
208 | kfree(buf); | |
209 | ||
210 | return cnt; | |
211 | } | |
212 | ||
213 | static ssize_t rsxx_cram_write(struct file *fp, const char __user *ubuf, | |
214 | size_t cnt, loff_t *ppos) | |
215 | { | |
216 | struct rsxx_cram *info = fp->private_data; | |
217 | struct rsxx_cardinfo *card = info->i_private; | |
218 | char *buf; | |
219 | int st; | |
220 | ||
221 | buf = kzalloc(sizeof(*buf) * cnt, GFP_KERNEL); | |
222 | if (!buf) | |
223 | return -ENOMEM; | |
224 | ||
225 | st = copy_from_user(buf, ubuf, cnt); | |
226 | if (st) | |
227 | return st; | |
228 | ||
229 | info->f_pos = (u32)*ppos + info->offset; | |
230 | ||
231 | st = rsxx_creg_write(card, CREG_ADD_CRAM + info->f_pos, cnt, buf, 1); | |
232 | if (st) | |
233 | return st; | |
234 | ||
235 | info->offset += cnt; | |
236 | ||
237 | kfree(buf); | |
238 | ||
239 | return cnt; | |
240 | } | |
241 | ||
242 | static int rsxx_cram_open(struct inode *inode, struct file *file) | |
243 | { | |
244 | struct rsxx_cram *info = kzalloc(sizeof(*info), GFP_KERNEL); | |
245 | if (!info) | |
246 | return -ENOMEM; | |
247 | ||
248 | info->i_private = inode->i_private; | |
249 | info->f_pos = file->f_pos; | |
250 | file->private_data = info; | |
251 | ||
252 | return 0; | |
253 | } | |
254 | ||
255 | static int rsxx_cram_release(struct inode *inode, struct file *file) | |
256 | { | |
257 | struct rsxx_cram *info = file->private_data; | |
258 | ||
259 | if (!info) | |
260 | return 0; | |
261 | ||
262 | kfree(info); | |
263 | file->private_data = NULL; | |
264 | ||
265 | return 0; | |
266 | } | |
267 | ||
268 | static const struct file_operations debugfs_cram_fops = { | |
269 | .owner = THIS_MODULE, | |
270 | .open = rsxx_cram_open, | |
271 | .read = rsxx_cram_read, | |
272 | .write = rsxx_cram_write, | |
273 | .release = rsxx_cram_release, | |
274 | }; | |
275 | ||
276 | static const struct file_operations debugfs_stats_fops = { | |
277 | .owner = THIS_MODULE, | |
278 | .open = rsxx_attr_stats_open, | |
279 | .read = seq_read, | |
280 | .llseek = seq_lseek, | |
281 | .release = single_release, | |
282 | }; | |
283 | ||
284 | static const struct file_operations debugfs_pci_regs_fops = { | |
285 | .owner = THIS_MODULE, | |
286 | .open = rsxx_attr_pci_regs_open, | |
287 | .read = seq_read, | |
288 | .llseek = seq_lseek, | |
289 | .release = single_release, | |
290 | }; | |
291 | ||
292 | static void rsxx_debugfs_dev_new(struct rsxx_cardinfo *card) | |
293 | { | |
294 | struct dentry *debugfs_stats; | |
295 | struct dentry *debugfs_pci_regs; | |
296 | struct dentry *debugfs_cram; | |
297 | ||
298 | card->debugfs_dir = debugfs_create_dir(card->gendisk->disk_name, NULL); | |
299 | if (IS_ERR_OR_NULL(card->debugfs_dir)) | |
300 | goto failed_debugfs_dir; | |
301 | ||
302 | debugfs_stats = debugfs_create_file("stats", S_IRUGO, | |
303 | card->debugfs_dir, card, | |
304 | &debugfs_stats_fops); | |
305 | if (IS_ERR_OR_NULL(debugfs_stats)) | |
306 | goto failed_debugfs_stats; | |
307 | ||
308 | debugfs_pci_regs = debugfs_create_file("pci_regs", S_IRUGO, | |
309 | card->debugfs_dir, card, | |
310 | &debugfs_pci_regs_fops); | |
311 | if (IS_ERR_OR_NULL(debugfs_pci_regs)) | |
312 | goto failed_debugfs_pci_regs; | |
313 | ||
314 | debugfs_cram = debugfs_create_file("cram", S_IRUGO | S_IWUSR, | |
315 | card->debugfs_dir, card, | |
316 | &debugfs_cram_fops); | |
317 | if (IS_ERR_OR_NULL(debugfs_cram)) | |
318 | goto failed_debugfs_cram; | |
319 | ||
320 | return; | |
321 | failed_debugfs_cram: | |
322 | debugfs_remove(debugfs_pci_regs); | |
323 | failed_debugfs_pci_regs: | |
324 | debugfs_remove(debugfs_stats); | |
325 | failed_debugfs_stats: | |
326 | debugfs_remove(card->debugfs_dir); | |
327 | failed_debugfs_dir: | |
328 | card->debugfs_dir = NULL; | |
329 | } | |
330 | ||
8722ff8c | 331 | /*----------------- Interrupt Control & Handling -------------------*/ |
c95246c3 PK |
332 | |
333 | static void rsxx_mask_interrupts(struct rsxx_cardinfo *card) | |
334 | { | |
335 | card->isr_mask = 0; | |
336 | card->ier_mask = 0; | |
337 | } | |
338 | ||
8722ff8c | 339 | static void __enable_intr(unsigned int *mask, unsigned int intr) |
340 | { | |
341 | *mask |= intr; | |
342 | } | |
343 | ||
344 | static void __disable_intr(unsigned int *mask, unsigned int intr) | |
345 | { | |
346 | *mask &= ~intr; | |
347 | } | |
348 | ||
349 | /* | |
350 | * NOTE: Disabling the IER will disable the hardware interrupt. | |
351 | * Disabling the ISR will disable the software handling of the ISR bit. | |
352 | * | |
353 | * Enable/Disable interrupt functions assume the card->irq_lock | |
354 | * is held by the caller. | |
355 | */ | |
356 | void rsxx_enable_ier(struct rsxx_cardinfo *card, unsigned int intr) | |
357 | { | |
c95246c3 PK |
358 | if (unlikely(card->halt) || |
359 | unlikely(card->eeh_state)) | |
8722ff8c | 360 | return; |
361 | ||
362 | __enable_intr(&card->ier_mask, intr); | |
363 | iowrite32(card->ier_mask, card->regmap + IER); | |
364 | } | |
365 | ||
366 | void rsxx_disable_ier(struct rsxx_cardinfo *card, unsigned int intr) | |
367 | { | |
c95246c3 PK |
368 | if (unlikely(card->eeh_state)) |
369 | return; | |
370 | ||
8722ff8c | 371 | __disable_intr(&card->ier_mask, intr); |
372 | iowrite32(card->ier_mask, card->regmap + IER); | |
373 | } | |
374 | ||
375 | void rsxx_enable_ier_and_isr(struct rsxx_cardinfo *card, | |
376 | unsigned int intr) | |
377 | { | |
c95246c3 PK |
378 | if (unlikely(card->halt) || |
379 | unlikely(card->eeh_state)) | |
8722ff8c | 380 | return; |
381 | ||
382 | __enable_intr(&card->isr_mask, intr); | |
383 | __enable_intr(&card->ier_mask, intr); | |
384 | iowrite32(card->ier_mask, card->regmap + IER); | |
385 | } | |
386 | void rsxx_disable_ier_and_isr(struct rsxx_cardinfo *card, | |
387 | unsigned int intr) | |
388 | { | |
c95246c3 PK |
389 | if (unlikely(card->eeh_state)) |
390 | return; | |
391 | ||
8722ff8c | 392 | __disable_intr(&card->isr_mask, intr); |
393 | __disable_intr(&card->ier_mask, intr); | |
394 | iowrite32(card->ier_mask, card->regmap + IER); | |
395 | } | |
396 | ||
c206c709 | 397 | static irqreturn_t rsxx_isr(int irq, void *pdata) |
8722ff8c | 398 | { |
c206c709 | 399 | struct rsxx_cardinfo *card = pdata; |
8722ff8c | 400 | unsigned int isr; |
401 | int handled = 0; | |
402 | int reread_isr; | |
403 | int i; | |
404 | ||
405 | spin_lock(&card->irq_lock); | |
406 | ||
407 | do { | |
408 | reread_isr = 0; | |
409 | ||
c95246c3 PK |
410 | if (unlikely(card->eeh_state)) |
411 | break; | |
412 | ||
8722ff8c | 413 | isr = ioread32(card->regmap + ISR); |
414 | if (isr == 0xffffffff) { | |
415 | /* | |
416 | * A few systems seem to have an intermittent issue | |
417 | * where PCI reads return all Fs, but retrying the read | |
418 | * a little later will return as expected. | |
419 | */ | |
420 | dev_info(CARD_TO_DEV(card), | |
421 | "ISR = 0xFFFFFFFF, retrying later\n"); | |
422 | break; | |
423 | } | |
424 | ||
425 | isr &= card->isr_mask; | |
426 | if (!isr) | |
427 | break; | |
428 | ||
429 | for (i = 0; i < card->n_targets; i++) { | |
430 | if (isr & CR_INTR_DMA(i)) { | |
431 | if (card->ier_mask & CR_INTR_DMA(i)) { | |
432 | rsxx_disable_ier(card, CR_INTR_DMA(i)); | |
433 | reread_isr = 1; | |
434 | } | |
435 | queue_work(card->ctrl[i].done_wq, | |
436 | &card->ctrl[i].dma_done_work); | |
437 | handled++; | |
438 | } | |
439 | } | |
440 | ||
441 | if (isr & CR_INTR_CREG) { | |
a3299ab1 PK |
442 | queue_work(card->creg_ctrl.creg_wq, |
443 | &card->creg_ctrl.done_work); | |
8722ff8c | 444 | handled++; |
445 | } | |
446 | ||
447 | if (isr & CR_INTR_EVENT) { | |
a3299ab1 | 448 | queue_work(card->event_wq, &card->event_work); |
8722ff8c | 449 | rsxx_disable_ier_and_isr(card, CR_INTR_EVENT); |
450 | handled++; | |
451 | } | |
452 | } while (reread_isr); | |
453 | ||
454 | spin_unlock(&card->irq_lock); | |
455 | ||
456 | return handled ? IRQ_HANDLED : IRQ_NONE; | |
457 | } | |
458 | ||
459 | /*----------------- Card Event Handler -------------------*/ | |
f3791203 | 460 | static const char * const rsxx_card_state_to_str(unsigned int state) |
c206c709 | 461 | { |
f3791203 | 462 | static const char * const state_strings[] = { |
c206c709 PK |
463 | "Unknown", "Shutdown", "Starting", "Formatting", |
464 | "Uninitialized", "Good", "Shutting Down", | |
465 | "Fault", "Read Only Fault", "dStroying" | |
466 | }; | |
467 | ||
468 | return state_strings[ffs(state)]; | |
469 | } | |
470 | ||
8722ff8c | 471 | static void card_state_change(struct rsxx_cardinfo *card, |
472 | unsigned int new_state) | |
473 | { | |
474 | int st; | |
475 | ||
476 | dev_info(CARD_TO_DEV(card), | |
477 | "card state change detected.(%s -> %s)\n", | |
478 | rsxx_card_state_to_str(card->state), | |
479 | rsxx_card_state_to_str(new_state)); | |
480 | ||
481 | card->state = new_state; | |
482 | ||
483 | /* Don't attach DMA interfaces if the card has an invalid config */ | |
484 | if (!card->config_valid) | |
485 | return; | |
486 | ||
487 | switch (new_state) { | |
488 | case CARD_STATE_RD_ONLY_FAULT: | |
489 | dev_crit(CARD_TO_DEV(card), | |
490 | "Hardware has entered read-only mode!\n"); | |
491 | /* | |
492 | * Fall through so the DMA devices can be attached and | |
493 | * the user can attempt to pull off their data. | |
494 | */ | |
495 | case CARD_STATE_GOOD: | |
496 | st = rsxx_get_card_size8(card, &card->size8); | |
497 | if (st) | |
498 | dev_err(CARD_TO_DEV(card), | |
499 | "Failed attaching DMA devices\n"); | |
500 | ||
501 | if (card->config_valid) | |
502 | set_capacity(card->gendisk, card->size8 >> 9); | |
503 | break; | |
504 | ||
505 | case CARD_STATE_FAULT: | |
506 | dev_crit(CARD_TO_DEV(card), | |
507 | "Hardware Fault reported!\n"); | |
508 | /* Fall through. */ | |
509 | ||
510 | /* Everything else, detach DMA interface if it's attached. */ | |
511 | case CARD_STATE_SHUTDOWN: | |
512 | case CARD_STATE_STARTING: | |
513 | case CARD_STATE_FORMATTING: | |
514 | case CARD_STATE_UNINITIALIZED: | |
515 | case CARD_STATE_SHUTTING_DOWN: | |
516 | /* | |
517 | * dStroy is a term coined by marketing to represent the low level | |
518 | * secure erase. | |
519 | */ | |
520 | case CARD_STATE_DSTROYING: | |
521 | set_capacity(card->gendisk, 0); | |
522 | break; | |
523 | } | |
524 | } | |
525 | ||
526 | static void card_event_handler(struct work_struct *work) | |
527 | { | |
528 | struct rsxx_cardinfo *card; | |
529 | unsigned int state; | |
530 | unsigned long flags; | |
531 | int st; | |
532 | ||
533 | card = container_of(work, struct rsxx_cardinfo, event_work); | |
534 | ||
535 | if (unlikely(card->halt)) | |
536 | return; | |
537 | ||
538 | /* | |
539 | * Enable the interrupt now to avoid any weird race conditions where a | |
540 | * state change might occur while rsxx_get_card_state() is | |
541 | * processing a returned creg cmd. | |
542 | */ | |
543 | spin_lock_irqsave(&card->irq_lock, flags); | |
544 | rsxx_enable_ier_and_isr(card, CR_INTR_EVENT); | |
545 | spin_unlock_irqrestore(&card->irq_lock, flags); | |
546 | ||
547 | st = rsxx_get_card_state(card, &state); | |
548 | if (st) { | |
549 | dev_info(CARD_TO_DEV(card), | |
550 | "Failed reading state after event.\n"); | |
551 | return; | |
552 | } | |
553 | ||
554 | if (card->state != state) | |
555 | card_state_change(card, state); | |
556 | ||
557 | if (card->creg_ctrl.creg_stats.stat & CREG_STAT_LOG_PENDING) | |
558 | rsxx_read_hw_log(card); | |
559 | } | |
560 | ||
8722ff8c | 561 | /*----------------- Card Operations -------------------*/ |
562 | static int card_shutdown(struct rsxx_cardinfo *card) | |
563 | { | |
564 | unsigned int state; | |
565 | signed long start; | |
566 | const int timeout = msecs_to_jiffies(120000); | |
567 | int st; | |
568 | ||
569 | /* We can't issue a shutdown if the card is in a transition state */ | |
570 | start = jiffies; | |
571 | do { | |
572 | st = rsxx_get_card_state(card, &state); | |
573 | if (st) | |
574 | return st; | |
575 | } while (state == CARD_STATE_STARTING && | |
576 | (jiffies - start < timeout)); | |
577 | ||
578 | if (state == CARD_STATE_STARTING) | |
579 | return -ETIMEDOUT; | |
580 | ||
581 | /* Only issue a shutdown if we need to */ | |
582 | if ((state != CARD_STATE_SHUTTING_DOWN) && | |
583 | (state != CARD_STATE_SHUTDOWN)) { | |
584 | st = rsxx_issue_card_cmd(card, CARD_CMD_SHUTDOWN); | |
585 | if (st) | |
586 | return st; | |
587 | } | |
588 | ||
589 | start = jiffies; | |
590 | do { | |
591 | st = rsxx_get_card_state(card, &state); | |
592 | if (st) | |
593 | return st; | |
594 | } while (state != CARD_STATE_SHUTDOWN && | |
595 | (jiffies - start < timeout)); | |
596 | ||
597 | if (state != CARD_STATE_SHUTDOWN) | |
598 | return -ETIMEDOUT; | |
599 | ||
600 | return 0; | |
601 | } | |
602 | ||
4dcaf472 | 603 | static int rsxx_eeh_frozen(struct pci_dev *dev) |
c95246c3 PK |
604 | { |
605 | struct rsxx_cardinfo *card = pci_get_drvdata(dev); | |
606 | int i; | |
4dcaf472 | 607 | int st; |
c95246c3 | 608 | |
f730e3dc | 609 | dev_warn(&dev->dev, "IBM Flash Adapter PCI: preparing for slot reset.\n"); |
c95246c3 PK |
610 | |
611 | card->eeh_state = 1; | |
612 | rsxx_mask_interrupts(card); | |
613 | ||
614 | /* | |
615 | * We need to guarantee that the write for eeh_state and masking | |
616 | * interrupts does not become reordered. This will prevent a possible | |
617 | * race condition with the EEH code. | |
618 | */ | |
619 | wmb(); | |
620 | ||
621 | pci_disable_device(dev); | |
622 | ||
4dcaf472 PK |
623 | st = rsxx_eeh_save_issued_dmas(card); |
624 | if (st) | |
625 | return st; | |
c95246c3 PK |
626 | |
627 | rsxx_eeh_save_issued_creg(card); | |
628 | ||
629 | for (i = 0; i < card->n_targets; i++) { | |
630 | if (card->ctrl[i].status.buf) | |
631 | pci_free_consistent(card->dev, STATUS_BUFFER_SIZE8, | |
632 | card->ctrl[i].status.buf, | |
633 | card->ctrl[i].status.dma_addr); | |
634 | if (card->ctrl[i].cmd.buf) | |
635 | pci_free_consistent(card->dev, COMMAND_BUFFER_SIZE8, | |
636 | card->ctrl[i].cmd.buf, | |
637 | card->ctrl[i].cmd.dma_addr); | |
638 | } | |
4dcaf472 PK |
639 | |
640 | return 0; | |
c95246c3 PK |
641 | } |
642 | ||
643 | static void rsxx_eeh_failure(struct pci_dev *dev) | |
644 | { | |
645 | struct rsxx_cardinfo *card = pci_get_drvdata(dev); | |
646 | int i; | |
0ab4743e | 647 | int cnt = 0; |
c95246c3 | 648 | |
f730e3dc | 649 | dev_err(&dev->dev, "IBM Flash Adapter PCI: disabling failed card.\n"); |
c95246c3 PK |
650 | |
651 | card->eeh_state = 1; | |
0ab4743e | 652 | card->halt = 1; |
c95246c3 | 653 | |
0ab4743e PK |
654 | for (i = 0; i < card->n_targets; i++) { |
655 | spin_lock_bh(&card->ctrl[i].queue_lock); | |
656 | cnt = rsxx_cleanup_dma_queue(&card->ctrl[i], | |
e5feab22 PK |
657 | &card->ctrl[i].queue, |
658 | COMPLETE_DMA); | |
0ab4743e PK |
659 | spin_unlock_bh(&card->ctrl[i].queue_lock); |
660 | ||
661 | cnt += rsxx_dma_cancel(&card->ctrl[i]); | |
c95246c3 | 662 | |
0ab4743e PK |
663 | if (cnt) |
664 | dev_info(CARD_TO_DEV(card), | |
665 | "Freed %d queued DMAs on channel %d\n", | |
666 | cnt, card->ctrl[i].id); | |
667 | } | |
c95246c3 PK |
668 | } |
669 | ||
670 | static int rsxx_eeh_fifo_flush_poll(struct rsxx_cardinfo *card) | |
671 | { | |
672 | unsigned int status; | |
673 | int iter = 0; | |
674 | ||
675 | /* We need to wait for the hardware to reset */ | |
676 | while (iter++ < 10) { | |
677 | status = ioread32(card->regmap + PCI_RECONFIG); | |
678 | ||
679 | if (status & RSXX_FLUSH_BUSY) { | |
680 | ssleep(1); | |
681 | continue; | |
682 | } | |
683 | ||
684 | if (status & RSXX_FLUSH_TIMEOUT) | |
685 | dev_warn(CARD_TO_DEV(card), "HW: flash controller timeout\n"); | |
686 | return 0; | |
687 | } | |
688 | ||
689 | /* Hardware failed resetting itself. */ | |
690 | return -1; | |
691 | } | |
692 | ||
693 | static pci_ers_result_t rsxx_error_detected(struct pci_dev *dev, | |
694 | enum pci_channel_state error) | |
695 | { | |
4dcaf472 PK |
696 | int st; |
697 | ||
c95246c3 PK |
698 | if (dev->revision < RSXX_EEH_SUPPORT) |
699 | return PCI_ERS_RESULT_NONE; | |
700 | ||
701 | if (error == pci_channel_io_perm_failure) { | |
702 | rsxx_eeh_failure(dev); | |
703 | return PCI_ERS_RESULT_DISCONNECT; | |
704 | } | |
705 | ||
4dcaf472 PK |
706 | st = rsxx_eeh_frozen(dev); |
707 | if (st) { | |
708 | dev_err(&dev->dev, "Slot reset setup failed\n"); | |
709 | rsxx_eeh_failure(dev); | |
710 | return PCI_ERS_RESULT_DISCONNECT; | |
711 | } | |
712 | ||
c95246c3 PK |
713 | return PCI_ERS_RESULT_NEED_RESET; |
714 | } | |
715 | ||
716 | static pci_ers_result_t rsxx_slot_reset(struct pci_dev *dev) | |
717 | { | |
718 | struct rsxx_cardinfo *card = pci_get_drvdata(dev); | |
719 | unsigned long flags; | |
720 | int i; | |
721 | int st; | |
722 | ||
723 | dev_warn(&dev->dev, | |
f730e3dc | 724 | "IBM Flash Adapter PCI: recovering from slot reset.\n"); |
c95246c3 PK |
725 | |
726 | st = pci_enable_device(dev); | |
727 | if (st) | |
728 | goto failed_hw_setup; | |
729 | ||
730 | pci_set_master(dev); | |
731 | ||
732 | st = rsxx_eeh_fifo_flush_poll(card); | |
733 | if (st) | |
734 | goto failed_hw_setup; | |
735 | ||
736 | rsxx_dma_queue_reset(card); | |
737 | ||
738 | for (i = 0; i < card->n_targets; i++) { | |
739 | st = rsxx_hw_buffers_init(dev, &card->ctrl[i]); | |
740 | if (st) | |
741 | goto failed_hw_buffers_init; | |
742 | } | |
743 | ||
744 | if (card->config_valid) | |
745 | rsxx_dma_configure(card); | |
746 | ||
747 | /* Clears the ISR register from spurious interrupts */ | |
748 | st = ioread32(card->regmap + ISR); | |
749 | ||
750 | card->eeh_state = 0; | |
751 | ||
c95246c3 PK |
752 | spin_lock_irqsave(&card->irq_lock, flags); |
753 | if (card->n_targets & RSXX_MAX_TARGETS) | |
754 | rsxx_enable_ier_and_isr(card, CR_INTR_ALL_G); | |
755 | else | |
756 | rsxx_enable_ier_and_isr(card, CR_INTR_ALL_C); | |
757 | spin_unlock_irqrestore(&card->irq_lock, flags); | |
758 | ||
759 | rsxx_kick_creg_queue(card); | |
760 | ||
761 | for (i = 0; i < card->n_targets; i++) { | |
762 | spin_lock(&card->ctrl[i].queue_lock); | |
763 | if (list_empty(&card->ctrl[i].queue)) { | |
764 | spin_unlock(&card->ctrl[i].queue_lock); | |
765 | continue; | |
766 | } | |
767 | spin_unlock(&card->ctrl[i].queue_lock); | |
768 | ||
769 | queue_work(card->ctrl[i].issue_wq, | |
770 | &card->ctrl[i].issue_dma_work); | |
771 | } | |
772 | ||
f730e3dc | 773 | dev_info(&dev->dev, "IBM Flash Adapter PCI: recovery complete.\n"); |
c95246c3 PK |
774 | |
775 | return PCI_ERS_RESULT_RECOVERED; | |
776 | ||
777 | failed_hw_buffers_init: | |
c95246c3 PK |
778 | for (i = 0; i < card->n_targets; i++) { |
779 | if (card->ctrl[i].status.buf) | |
780 | pci_free_consistent(card->dev, | |
781 | STATUS_BUFFER_SIZE8, | |
782 | card->ctrl[i].status.buf, | |
783 | card->ctrl[i].status.dma_addr); | |
784 | if (card->ctrl[i].cmd.buf) | |
785 | pci_free_consistent(card->dev, | |
786 | COMMAND_BUFFER_SIZE8, | |
787 | card->ctrl[i].cmd.buf, | |
788 | card->ctrl[i].cmd.dma_addr); | |
789 | } | |
790 | failed_hw_setup: | |
791 | rsxx_eeh_failure(dev); | |
792 | return PCI_ERS_RESULT_DISCONNECT; | |
793 | ||
794 | } | |
795 | ||
8722ff8c | 796 | /*----------------- Driver Initialization & Setup -------------------*/ |
797 | /* Returns: 0 if the driver is compatible with the device | |
798 | -1 if the driver is NOT compatible with the device */ | |
799 | static int rsxx_compatibility_check(struct rsxx_cardinfo *card) | |
800 | { | |
801 | unsigned char pci_rev; | |
802 | ||
803 | pci_read_config_byte(card->dev, PCI_REVISION_ID, &pci_rev); | |
804 | ||
805 | if (pci_rev > RS70_PCI_REV_SUPPORTED) | |
806 | return -1; | |
807 | return 0; | |
808 | } | |
809 | ||
82bed4d5 | 810 | static int rsxx_pci_probe(struct pci_dev *dev, |
8722ff8c | 811 | const struct pci_device_id *id) |
812 | { | |
813 | struct rsxx_cardinfo *card; | |
8722ff8c | 814 | int st; |
fb065cd9 | 815 | unsigned int sync_timeout; |
8722ff8c | 816 | |
817 | dev_info(&dev->dev, "PCI-Flash SSD discovered\n"); | |
818 | ||
819 | card = kzalloc(sizeof(*card), GFP_KERNEL); | |
820 | if (!card) | |
821 | return -ENOMEM; | |
822 | ||
823 | card->dev = dev; | |
824 | pci_set_drvdata(dev, card); | |
825 | ||
826 | do { | |
827 | if (!ida_pre_get(&rsxx_disk_ida, GFP_KERNEL)) { | |
828 | st = -ENOMEM; | |
829 | goto failed_ida_get; | |
830 | } | |
831 | ||
832 | spin_lock(&rsxx_ida_lock); | |
833 | st = ida_get_new(&rsxx_disk_ida, &card->disk_id); | |
834 | spin_unlock(&rsxx_ida_lock); | |
835 | } while (st == -EAGAIN); | |
836 | ||
837 | if (st) | |
838 | goto failed_ida_get; | |
839 | ||
840 | st = pci_enable_device(dev); | |
841 | if (st) | |
842 | goto failed_enable; | |
843 | ||
844 | pci_set_master(dev); | |
845 | pci_set_dma_max_seg_size(dev, RSXX_HW_BLK_SIZE); | |
846 | ||
847 | st = pci_set_dma_mask(dev, DMA_BIT_MASK(64)); | |
848 | if (st) { | |
849 | dev_err(CARD_TO_DEV(card), | |
850 | "No usable DMA configuration,aborting\n"); | |
851 | goto failed_dma_mask; | |
852 | } | |
853 | ||
854 | st = pci_request_regions(dev, DRIVER_NAME); | |
855 | if (st) { | |
856 | dev_err(CARD_TO_DEV(card), | |
857 | "Failed to request memory region\n"); | |
858 | goto failed_request_regions; | |
859 | } | |
860 | ||
861 | if (pci_resource_len(dev, 0) == 0) { | |
862 | dev_err(CARD_TO_DEV(card), "BAR0 has length 0!\n"); | |
863 | st = -ENOMEM; | |
864 | goto failed_iomap; | |
865 | } | |
866 | ||
867 | card->regmap = pci_iomap(dev, 0, 0); | |
868 | if (!card->regmap) { | |
869 | dev_err(CARD_TO_DEV(card), "Failed to map BAR0\n"); | |
870 | st = -ENOMEM; | |
871 | goto failed_iomap; | |
872 | } | |
873 | ||
874 | spin_lock_init(&card->irq_lock); | |
875 | card->halt = 0; | |
c95246c3 | 876 | card->eeh_state = 0; |
8722ff8c | 877 | |
c206c709 | 878 | spin_lock_irq(&card->irq_lock); |
8722ff8c | 879 | rsxx_disable_ier_and_isr(card, CR_INTR_ALL); |
c206c709 | 880 | spin_unlock_irq(&card->irq_lock); |
8722ff8c | 881 | |
882 | if (!force_legacy) { | |
883 | st = pci_enable_msi(dev); | |
884 | if (st) | |
885 | dev_warn(CARD_TO_DEV(card), | |
886 | "Failed to enable MSI\n"); | |
887 | } | |
888 | ||
889 | st = request_irq(dev->irq, rsxx_isr, IRQF_DISABLED | IRQF_SHARED, | |
890 | DRIVER_NAME, card); | |
891 | if (st) { | |
892 | dev_err(CARD_TO_DEV(card), | |
893 | "Failed requesting IRQ%d\n", dev->irq); | |
894 | goto failed_irq; | |
895 | } | |
896 | ||
897 | /************* Setup Processor Command Interface *************/ | |
a3299ab1 PK |
898 | st = rsxx_creg_setup(card); |
899 | if (st) { | |
900 | dev_err(CARD_TO_DEV(card), "Failed to setup creg interface.\n"); | |
901 | goto failed_creg_setup; | |
902 | } | |
8722ff8c | 903 | |
c206c709 | 904 | spin_lock_irq(&card->irq_lock); |
8722ff8c | 905 | rsxx_enable_ier_and_isr(card, CR_INTR_CREG); |
c206c709 | 906 | spin_unlock_irq(&card->irq_lock); |
8722ff8c | 907 | |
908 | st = rsxx_compatibility_check(card); | |
909 | if (st) { | |
910 | dev_warn(CARD_TO_DEV(card), | |
911 | "Incompatible driver detected. Please update the driver.\n"); | |
912 | st = -EINVAL; | |
913 | goto failed_compatiblity_check; | |
914 | } | |
915 | ||
916 | /************* Load Card Config *************/ | |
917 | st = rsxx_load_config(card); | |
918 | if (st) | |
919 | dev_err(CARD_TO_DEV(card), | |
920 | "Failed loading card config\n"); | |
921 | ||
922 | /************* Setup DMA Engine *************/ | |
923 | st = rsxx_get_num_targets(card, &card->n_targets); | |
924 | if (st) | |
925 | dev_info(CARD_TO_DEV(card), | |
926 | "Failed reading the number of DMA targets\n"); | |
927 | ||
928 | card->ctrl = kzalloc(card->n_targets * sizeof(*card->ctrl), GFP_KERNEL); | |
929 | if (!card->ctrl) { | |
930 | st = -ENOMEM; | |
931 | goto failed_dma_setup; | |
932 | } | |
933 | ||
934 | st = rsxx_dma_setup(card); | |
935 | if (st) { | |
936 | dev_info(CARD_TO_DEV(card), | |
937 | "Failed to setup DMA engine\n"); | |
938 | goto failed_dma_setup; | |
939 | } | |
940 | ||
941 | /************* Setup Card Event Handler *************/ | |
a3299ab1 PK |
942 | card->event_wq = create_singlethread_workqueue(DRIVER_NAME"_event"); |
943 | if (!card->event_wq) { | |
944 | dev_err(CARD_TO_DEV(card), "Failed card event setup.\n"); | |
945 | goto failed_event_handler; | |
946 | } | |
947 | ||
8722ff8c | 948 | INIT_WORK(&card->event_work, card_event_handler); |
949 | ||
950 | st = rsxx_setup_dev(card); | |
951 | if (st) | |
952 | goto failed_create_dev; | |
953 | ||
954 | rsxx_get_card_state(card, &card->state); | |
955 | ||
956 | dev_info(CARD_TO_DEV(card), | |
957 | "card state: %s\n", | |
958 | rsxx_card_state_to_str(card->state)); | |
959 | ||
960 | /* | |
961 | * Now that the DMA Engine and devices have been setup, | |
962 | * we can enable the event interrupt(it kicks off actions in | |
963 | * those layers so we couldn't enable it right away.) | |
964 | */ | |
c206c709 | 965 | spin_lock_irq(&card->irq_lock); |
8722ff8c | 966 | rsxx_enable_ier_and_isr(card, CR_INTR_EVENT); |
c206c709 | 967 | spin_unlock_irq(&card->irq_lock); |
8722ff8c | 968 | |
969 | if (card->state == CARD_STATE_SHUTDOWN) { | |
970 | st = rsxx_issue_card_cmd(card, CARD_CMD_STARTUP); | |
971 | if (st) | |
972 | dev_crit(CARD_TO_DEV(card), | |
973 | "Failed issuing card startup\n"); | |
fb065cd9 PK |
974 | if (sync_start) { |
975 | sync_timeout = SYNC_START_TIMEOUT; | |
976 | ||
977 | dev_info(CARD_TO_DEV(card), | |
978 | "Waiting for card to startup\n"); | |
979 | ||
980 | do { | |
981 | ssleep(1); | |
982 | sync_timeout--; | |
983 | ||
984 | rsxx_get_card_state(card, &card->state); | |
985 | } while (sync_timeout && | |
986 | (card->state == CARD_STATE_STARTING)); | |
987 | ||
988 | if (card->state == CARD_STATE_STARTING) { | |
989 | dev_warn(CARD_TO_DEV(card), | |
990 | "Card startup timed out\n"); | |
991 | card->size8 = 0; | |
992 | } else { | |
993 | dev_info(CARD_TO_DEV(card), | |
994 | "card state: %s\n", | |
995 | rsxx_card_state_to_str(card->state)); | |
996 | st = rsxx_get_card_size8(card, &card->size8); | |
997 | if (st) | |
998 | card->size8 = 0; | |
999 | } | |
1000 | } | |
8722ff8c | 1001 | } else if (card->state == CARD_STATE_GOOD || |
1002 | card->state == CARD_STATE_RD_ONLY_FAULT) { | |
1003 | st = rsxx_get_card_size8(card, &card->size8); | |
1004 | if (st) | |
1005 | card->size8 = 0; | |
1006 | } | |
1007 | ||
1008 | rsxx_attach_dev(card); | |
1009 | ||
36f988e9 PK |
1010 | /************* Setup Debugfs *************/ |
1011 | rsxx_debugfs_dev_new(card); | |
1012 | ||
8722ff8c | 1013 | return 0; |
1014 | ||
1015 | failed_create_dev: | |
a3299ab1 PK |
1016 | destroy_workqueue(card->event_wq); |
1017 | card->event_wq = NULL; | |
1018 | failed_event_handler: | |
8722ff8c | 1019 | rsxx_dma_destroy(card); |
1020 | failed_dma_setup: | |
1021 | failed_compatiblity_check: | |
a3299ab1 PK |
1022 | destroy_workqueue(card->creg_ctrl.creg_wq); |
1023 | card->creg_ctrl.creg_wq = NULL; | |
1024 | failed_creg_setup: | |
c206c709 | 1025 | spin_lock_irq(&card->irq_lock); |
8722ff8c | 1026 | rsxx_disable_ier_and_isr(card, CR_INTR_ALL); |
c206c709 | 1027 | spin_unlock_irq(&card->irq_lock); |
8722ff8c | 1028 | free_irq(dev->irq, card); |
1029 | if (!force_legacy) | |
1030 | pci_disable_msi(dev); | |
1031 | failed_irq: | |
1032 | pci_iounmap(dev, card->regmap); | |
1033 | failed_iomap: | |
1034 | pci_release_regions(dev); | |
1035 | failed_request_regions: | |
1036 | failed_dma_mask: | |
1037 | pci_disable_device(dev); | |
1038 | failed_enable: | |
1039 | spin_lock(&rsxx_ida_lock); | |
1040 | ida_remove(&rsxx_disk_ida, card->disk_id); | |
1041 | spin_unlock(&rsxx_ida_lock); | |
1042 | failed_ida_get: | |
1043 | kfree(card); | |
1044 | ||
1045 | return st; | |
1046 | } | |
1047 | ||
82bed4d5 | 1048 | static void rsxx_pci_remove(struct pci_dev *dev) |
8722ff8c | 1049 | { |
1050 | struct rsxx_cardinfo *card = pci_get_drvdata(dev); | |
1051 | unsigned long flags; | |
1052 | int st; | |
1053 | int i; | |
1054 | ||
1055 | if (!card) | |
1056 | return; | |
1057 | ||
1058 | dev_info(CARD_TO_DEV(card), | |
1059 | "Removing PCI-Flash SSD.\n"); | |
1060 | ||
1061 | rsxx_detach_dev(card); | |
1062 | ||
1063 | for (i = 0; i < card->n_targets; i++) { | |
1064 | spin_lock_irqsave(&card->irq_lock, flags); | |
1065 | rsxx_disable_ier_and_isr(card, CR_INTR_DMA(i)); | |
1066 | spin_unlock_irqrestore(&card->irq_lock, flags); | |
1067 | } | |
1068 | ||
1069 | st = card_shutdown(card); | |
1070 | if (st) | |
1071 | dev_crit(CARD_TO_DEV(card), "Shutdown failed!\n"); | |
1072 | ||
1073 | /* Sync outstanding event handlers. */ | |
1074 | spin_lock_irqsave(&card->irq_lock, flags); | |
1075 | rsxx_disable_ier_and_isr(card, CR_INTR_EVENT); | |
1076 | spin_unlock_irqrestore(&card->irq_lock, flags); | |
1077 | ||
8722ff8c | 1078 | cancel_work_sync(&card->event_work); |
1079 | ||
1080 | rsxx_destroy_dev(card); | |
1081 | rsxx_dma_destroy(card); | |
1082 | ||
1083 | spin_lock_irqsave(&card->irq_lock, flags); | |
1084 | rsxx_disable_ier_and_isr(card, CR_INTR_ALL); | |
1085 | spin_unlock_irqrestore(&card->irq_lock, flags); | |
1ebfd109 PK |
1086 | |
1087 | /* Prevent work_structs from re-queuing themselves. */ | |
1088 | card->halt = 1; | |
1089 | ||
36f988e9 PK |
1090 | debugfs_remove_recursive(card->debugfs_dir); |
1091 | ||
8722ff8c | 1092 | free_irq(dev->irq, card); |
1093 | ||
1094 | if (!force_legacy) | |
1095 | pci_disable_msi(dev); | |
1096 | ||
1097 | rsxx_creg_destroy(card); | |
1098 | ||
1099 | pci_iounmap(dev, card->regmap); | |
1100 | ||
1101 | pci_disable_device(dev); | |
1102 | pci_release_regions(dev); | |
1103 | ||
1104 | kfree(card); | |
1105 | } | |
1106 | ||
1107 | static int rsxx_pci_suspend(struct pci_dev *dev, pm_message_t state) | |
1108 | { | |
1109 | /* We don't support suspend at this time. */ | |
1110 | return -ENOSYS; | |
1111 | } | |
1112 | ||
1113 | static void rsxx_pci_shutdown(struct pci_dev *dev) | |
1114 | { | |
1115 | struct rsxx_cardinfo *card = pci_get_drvdata(dev); | |
1116 | unsigned long flags; | |
1117 | int i; | |
1118 | ||
1119 | if (!card) | |
1120 | return; | |
1121 | ||
1122 | dev_info(CARD_TO_DEV(card), "Shutting down PCI-Flash SSD.\n"); | |
1123 | ||
1124 | rsxx_detach_dev(card); | |
1125 | ||
1126 | for (i = 0; i < card->n_targets; i++) { | |
1127 | spin_lock_irqsave(&card->irq_lock, flags); | |
1128 | rsxx_disable_ier_and_isr(card, CR_INTR_DMA(i)); | |
1129 | spin_unlock_irqrestore(&card->irq_lock, flags); | |
1130 | } | |
1131 | ||
1132 | card_shutdown(card); | |
1133 | } | |
1134 | ||
c95246c3 PK |
1135 | static const struct pci_error_handlers rsxx_err_handler = { |
1136 | .error_detected = rsxx_error_detected, | |
1137 | .slot_reset = rsxx_slot_reset, | |
1138 | }; | |
1139 | ||
9baa3c34 | 1140 | static const struct pci_device_id rsxx_pci_ids[] = { |
9bb3c446 PK |
1141 | {PCI_DEVICE(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_FS70_FLASH)}, |
1142 | {PCI_DEVICE(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_FS80_FLASH)}, | |
8722ff8c | 1143 | {0,}, |
1144 | }; | |
1145 | ||
1146 | MODULE_DEVICE_TABLE(pci, rsxx_pci_ids); | |
1147 | ||
1148 | static struct pci_driver rsxx_pci_driver = { | |
1149 | .name = DRIVER_NAME, | |
1150 | .id_table = rsxx_pci_ids, | |
1151 | .probe = rsxx_pci_probe, | |
82bed4d5 | 1152 | .remove = rsxx_pci_remove, |
8722ff8c | 1153 | .suspend = rsxx_pci_suspend, |
1154 | .shutdown = rsxx_pci_shutdown, | |
c95246c3 | 1155 | .err_handler = &rsxx_err_handler, |
8722ff8c | 1156 | }; |
1157 | ||
1158 | static int __init rsxx_core_init(void) | |
1159 | { | |
1160 | int st; | |
1161 | ||
1162 | st = rsxx_dev_init(); | |
1163 | if (st) | |
1164 | return st; | |
1165 | ||
1166 | st = rsxx_dma_init(); | |
1167 | if (st) | |
1168 | goto dma_init_failed; | |
1169 | ||
1170 | st = rsxx_creg_init(); | |
1171 | if (st) | |
1172 | goto creg_init_failed; | |
1173 | ||
1174 | return pci_register_driver(&rsxx_pci_driver); | |
1175 | ||
1176 | creg_init_failed: | |
1177 | rsxx_dma_cleanup(); | |
1178 | dma_init_failed: | |
1179 | rsxx_dev_cleanup(); | |
1180 | ||
1181 | return st; | |
1182 | } | |
1183 | ||
1184 | static void __exit rsxx_core_cleanup(void) | |
1185 | { | |
1186 | pci_unregister_driver(&rsxx_pci_driver); | |
1187 | rsxx_creg_cleanup(); | |
1188 | rsxx_dma_cleanup(); | |
1189 | rsxx_dev_cleanup(); | |
1190 | } | |
1191 | ||
1192 | module_init(rsxx_core_init); | |
1193 | module_exit(rsxx_core_cleanup); |