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[SCSI] hpsa: expose controller firmware revision via /sys.
[deliverable/linux.git] / drivers / scsi / hpsa.c
CommitLineData
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>
667e23d4 46#include <scsi/scsi_tcq.h>
edd16368
SC		 47#include <linux/cciss_ioctl.h>
48#include <linux/string.h>
49#include <linux/bitmap.h>
50#include <asm/atomic.h>
51#include <linux/kthread.h>
52#include "hpsa_cmd.h"
53#include "hpsa.h"
54
55/* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */
31468401 56#define HPSA_DRIVER_VERSION "2.0.2-1"
edd16368
SC		 57#define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
58
59/* How long to wait (in milliseconds) for board to go into simple mode */
60#define MAX_CONFIG_WAIT 30000
61#define MAX_IOCTL_CONFIG_WAIT 1000
62
63/*define how many times we will try a command because of bus resets */
64#define MAX_CMD_RETRIES 3
65
66/* Embedded module documentation macros - see modules.h */
67MODULE_AUTHOR("Hewlett-Packard Company");
68MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
69 HPSA_DRIVER_VERSION);
70MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
71MODULE_VERSION(HPSA_DRIVER_VERSION);
72MODULE_LICENSE("GPL");
73
74static int hpsa_allow_any;
75module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR);
76MODULE_PARM_DESC(hpsa_allow_any,
77 "Allow hpsa driver to access unknown HP Smart Array hardware");
78
79/* define the PCI info for the cards we can control */
80static const struct pci_device_id hpsa_pci_device_id[] = {
edd16368
SC		 81 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241},
82 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243},
83 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245},
84 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247},
85 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249},
86 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324a},
87 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324b},
f8b01eb9
MM		 88 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233},
89#define PCI_DEVICE_ID_HP_CISSF 0x333f
90 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x333F},
edd16368
SC		 91 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
92 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
93 {0,}
94};
95
96MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id);
97
98/* board_id = Subsystem Device ID & Vendor ID
99 * product = Marketing Name for the board
100 * access = Address of the struct of function pointers
101 */
102static struct board_type products[] = {
edd16368
SC		 103 {0x3241103C, "Smart Array P212", &SA5_access},
104 {0x3243103C, "Smart Array P410", &SA5_access},
105 {0x3245103C, "Smart Array P410i", &SA5_access},
106 {0x3247103C, "Smart Array P411", &SA5_access},
107 {0x3249103C, "Smart Array P812", &SA5_access},
108 {0x324a103C, "Smart Array P712m", &SA5_access},
109 {0x324b103C, "Smart Array P711m", &SA5_access},
f8b01eb9
MM		 110 {0x3233103C, "StorageWorks P1210m", &SA5_access},
111 {0x333F103C, "StorageWorks P1210m", &SA5_access},
edd16368
SC		 112 {0xFFFF103C, "Unknown Smart Array", &SA5_access},
113};
114
115static int number_of_controllers;
116
117static irqreturn_t do_hpsa_intr(int irq, void *dev_id);
118static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg);
119static void start_io(struct ctlr_info *h);
120
121#ifdef CONFIG_COMPAT
122static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg);
123#endif
124
125static void cmd_free(struct ctlr_info *h, struct CommandList *c);
126static void cmd_special_free(struct ctlr_info *h, struct CommandList *c);
127static struct CommandList *cmd_alloc(struct ctlr_info *h);
128static struct CommandList *cmd_special_alloc(struct ctlr_info *h);
01a02ffc
SC		 129static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
130 void *buff, size_t size, u8 page_code, unsigned char *scsi3addr,
edd16368
SC		 131 int cmd_type);
132
133static int hpsa_scsi_queue_command(struct scsi_cmnd *cmd,
134 void (*done)(struct scsi_cmnd *));
a08a8471
SC		 135static void hpsa_scan_start(struct Scsi_Host *);
136static int hpsa_scan_finished(struct Scsi_Host *sh,
137 unsigned long elapsed_time);
667e23d4
SC		 138static int hpsa_change_queue_depth(struct scsi_device *sdev,
139 int qdepth, int reason);
edd16368
SC		 140
141static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd);
142static int hpsa_slave_alloc(struct scsi_device *sdev);
143static void hpsa_slave_destroy(struct scsi_device *sdev);
144
145static ssize_t raid_level_show(struct device *dev,
146 struct device_attribute *attr, char *buf);
147static ssize_t lunid_show(struct device *dev,
148 struct device_attribute *attr, char *buf);
149static ssize_t unique_id_show(struct device *dev,
150 struct device_attribute *attr, char *buf);
d28ce020
SC		 151static ssize_t host_show_firmware_revision(struct device *dev,
152 struct device_attribute *attr, char *buf);
edd16368
SC		 153static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno);
154static ssize_t host_store_rescan(struct device *dev,
155 struct device_attribute *attr, const char *buf, size_t count);
156static int check_for_unit_attention(struct ctlr_info *h,
157 struct CommandList *c);
158static void check_ioctl_unit_attention(struct ctlr_info *h,
159 struct CommandList *c);
303932fd
DB		 160/* performant mode helper functions */
161static void calc_bucket_map(int *bucket, int num_buckets,
162 int nsgs, int *bucket_map);
7136f9a7 163static __devinit void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h);
303932fd 164static inline u32 next_command(struct ctlr_info *h);
edd16368
SC		 165
166static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
167static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
168static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
169static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
d28ce020
SC		 170static DEVICE_ATTR(firmware_revision, S_IRUGO,
171 host_show_firmware_revision, NULL);
edd16368
SC		 172
173static struct device_attribute *hpsa_sdev_attrs[] = {
174 &dev_attr_raid_level,
175 &dev_attr_lunid,
176 &dev_attr_unique_id,
177 NULL,
178};
179
180static struct device_attribute *hpsa_shost_attrs[] = {
181 &dev_attr_rescan,
d28ce020 182 &dev_attr_firmware_revision,
edd16368
SC		 183 NULL,
184};
185
186static struct scsi_host_template hpsa_driver_template = {
187 .module = THIS_MODULE,
188 .name = "hpsa",
189 .proc_name = "hpsa",
190 .queuecommand = hpsa_scsi_queue_command,
a08a8471
SC		 191 .scan_start = hpsa_scan_start,
192 .scan_finished = hpsa_scan_finished,
667e23d4 193 .change_queue_depth = hpsa_change_queue_depth,
edd16368 194 .this_id = -1,
edd16368
SC		 195 .use_clustering = ENABLE_CLUSTERING,
196 .eh_device_reset_handler = hpsa_eh_device_reset_handler,
197 .ioctl = hpsa_ioctl,
198 .slave_alloc = hpsa_slave_alloc,
199 .slave_destroy = hpsa_slave_destroy,
200#ifdef CONFIG_COMPAT
201 .compat_ioctl = hpsa_compat_ioctl,
202#endif
203 .sdev_attrs = hpsa_sdev_attrs,
204 .shost_attrs = hpsa_shost_attrs,
205};
206
207static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
208{
209 unsigned long *priv = shost_priv(sdev->host);
210 return (struct ctlr_info *) *priv;
211}
212
a23513e8
SC		 213static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh)
214{
215 unsigned long *priv = shost_priv(sh);
216 return (struct ctlr_info *) *priv;
217}
218
edd16368
SC		 219static int check_for_unit_attention(struct ctlr_info *h,
220 struct CommandList *c)
221{
222 if (c->err_info->SenseInfo[2] != UNIT_ATTENTION)
223 return 0;
224
225 switch (c->err_info->SenseInfo[12]) {
226 case STATE_CHANGED:
227 dev_warn(&h->pdev->dev, "hpsa%d: a state change "
228 "detected, command retried\n", h->ctlr);
229 break;
230 case LUN_FAILED:
231 dev_warn(&h->pdev->dev, "hpsa%d: LUN failure "
232 "detected, action required\n", h->ctlr);
233 break;
234 case REPORT_LUNS_CHANGED:
235 dev_warn(&h->pdev->dev, "hpsa%d: report LUN data "
31468401 236 "changed, action required\n", h->ctlr);
edd16368 237 /*
edd16368
SC		 238 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
239 */
240 break;
241 case POWER_OR_RESET:
242 dev_warn(&h->pdev->dev, "hpsa%d: a power on "
243 "or device reset detected\n", h->ctlr);
244 break;
245 case UNIT_ATTENTION_CLEARED:
246 dev_warn(&h->pdev->dev, "hpsa%d: unit attention "
247 "cleared by another initiator\n", h->ctlr);
248 break;
249 default:
250 dev_warn(&h->pdev->dev, "hpsa%d: unknown "
251 "unit attention detected\n", h->ctlr);
252 break;
253 }
254 return 1;
255}
256
257static ssize_t host_store_rescan(struct device *dev,
258 struct device_attribute *attr,
259 const char *buf, size_t count)
260{
261 struct ctlr_info *h;
262 struct Scsi_Host *shost = class_to_shost(dev);
a23513e8 263 h = shost_to_hba(shost);
31468401 264 hpsa_scan_start(h->scsi_host);
edd16368
SC		 265 return count;
266}
267
d28ce020
SC		 268static ssize_t host_show_firmware_revision(struct device *dev,
269 struct device_attribute *attr, char *buf)
270{
271 struct ctlr_info *h;
272 struct Scsi_Host *shost = class_to_shost(dev);
273 unsigned char *fwrev;
274
275 h = shost_to_hba(shost);
276 if (!h->hba_inquiry_data)
277 return 0;
278 fwrev = &h->hba_inquiry_data[32];
279 return snprintf(buf, 20, "%c%c%c%c\n",
280 fwrev[0], fwrev[1], fwrev[2], fwrev[3]);
281}
282
edd16368
SC		 283/* Enqueuing and dequeuing functions for cmdlists. */
284static inline void addQ(struct hlist_head *list, struct CommandList *c)
285{
286 hlist_add_head(&c->list, list);
287}
288
303932fd
DB		 289static inline u32 next_command(struct ctlr_info *h)
290{
291 u32 a;
292
293 if (unlikely(h->transMethod != CFGTBL_Trans_Performant))
294 return h->access.command_completed(h);
295
296 if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) {
297 a = *(h->reply_pool_head); /* Next cmd in ring buffer */
298 (h->reply_pool_head)++;
299 h->commands_outstanding--;
300 } else {
301 a = FIFO_EMPTY;
302 }
303 /* Check for wraparound */
304 if (h->reply_pool_head == (h->reply_pool + h->max_commands)) {
305 h->reply_pool_head = h->reply_pool;
306 h->reply_pool_wraparound ^= 1;
307 }
308 return a;
309}
310
311/* set_performant_mode: Modify the tag for cciss performant
312 * set bit 0 for pull model, bits 3-1 for block fetch
313 * register number
314 */
315static void set_performant_mode(struct ctlr_info *h, struct CommandList *c)
316{
317 if (likely(h->transMethod == CFGTBL_Trans_Performant))
318 c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1);
319}
320
edd16368
SC		 321static void enqueue_cmd_and_start_io(struct ctlr_info *h,
322 struct CommandList *c)
323{
324 unsigned long flags;
303932fd
DB		 325
326 set_performant_mode(h, c);
edd16368
SC		 327 spin_lock_irqsave(&h->lock, flags);
328 addQ(&h->reqQ, c);
329 h->Qdepth++;
330 start_io(h);
331 spin_unlock_irqrestore(&h->lock, flags);
332}
333
334static inline void removeQ(struct CommandList *c)
335{
336 if (WARN_ON(hlist_unhashed(&c->list)))
337 return;
338 hlist_del_init(&c->list);
339}
340
341static inline int is_hba_lunid(unsigned char scsi3addr[])
342{
343 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0;
344}
345
346static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[])
347{
348 return (scsi3addr[3] & 0xC0) == 0x40;
349}
350
339b2b14
SC		 351static inline int is_scsi_rev_5(struct ctlr_info *h)
352{
353 if (!h->hba_inquiry_data)
354 return 0;
355 if ((h->hba_inquiry_data[2] & 0x07) == 5)
356 return 1;
357 return 0;
358}
359
edd16368
SC		 360static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
361 "UNKNOWN"
362};
363#define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1)
364
365static ssize_t raid_level_show(struct device *dev,
366 struct device_attribute *attr, char *buf)
367{
368 ssize_t l = 0;
82a72c0a 369 unsigned char rlevel;
edd16368
SC		 370 struct ctlr_info *h;
371 struct scsi_device *sdev;
372 struct hpsa_scsi_dev_t *hdev;
373 unsigned long flags;
374
375 sdev = to_scsi_device(dev);
376 h = sdev_to_hba(sdev);
377 spin_lock_irqsave(&h->lock, flags);
378 hdev = sdev->hostdata;
379 if (!hdev) {
380 spin_unlock_irqrestore(&h->lock, flags);
381 return -ENODEV;
382 }
383
384 /* Is this even a logical drive? */
385 if (!is_logical_dev_addr_mode(hdev->scsi3addr)) {
386 spin_unlock_irqrestore(&h->lock, flags);
387 l = snprintf(buf, PAGE_SIZE, "N/A\n");
388 return l;
389 }
390
391 rlevel = hdev->raid_level;
392 spin_unlock_irqrestore(&h->lock, flags);
82a72c0a 393 if (rlevel > RAID_UNKNOWN)
edd16368
SC		 394 rlevel = RAID_UNKNOWN;
395 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]);
396 return l;
397}
398
399static ssize_t lunid_show(struct device *dev,
400 struct device_attribute *attr, char *buf)
401{
402 struct ctlr_info *h;
403 struct scsi_device *sdev;
404 struct hpsa_scsi_dev_t *hdev;
405 unsigned long flags;
406 unsigned char lunid[8];
407
408 sdev = to_scsi_device(dev);
409 h = sdev_to_hba(sdev);
410 spin_lock_irqsave(&h->lock, flags);
411 hdev = sdev->hostdata;
412 if (!hdev) {
413 spin_unlock_irqrestore(&h->lock, flags);
414 return -ENODEV;
415 }
416 memcpy(lunid, hdev->scsi3addr, sizeof(lunid));
417 spin_unlock_irqrestore(&h->lock, flags);
418 return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
419 lunid[0], lunid[1], lunid[2], lunid[3],
420 lunid[4], lunid[5], lunid[6], lunid[7]);
421}
422
423static ssize_t unique_id_show(struct device *dev,
424 struct device_attribute *attr, char *buf)
425{
426 struct ctlr_info *h;
427 struct scsi_device *sdev;
428 struct hpsa_scsi_dev_t *hdev;
429 unsigned long flags;
430 unsigned char sn[16];
431
432 sdev = to_scsi_device(dev);
433 h = sdev_to_hba(sdev);
434 spin_lock_irqsave(&h->lock, flags);
435 hdev = sdev->hostdata;
436 if (!hdev) {
437 spin_unlock_irqrestore(&h->lock, flags);
438 return -ENODEV;
439 }
440 memcpy(sn, hdev->device_id, sizeof(sn));
441 spin_unlock_irqrestore(&h->lock, flags);
442 return snprintf(buf, 16 * 2 + 2,
443 "%02X%02X%02X%02X%02X%02X%02X%02X"
444 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
445 sn[0], sn[1], sn[2], sn[3],
446 sn[4], sn[5], sn[6], sn[7],
447 sn[8], sn[9], sn[10], sn[11],
448 sn[12], sn[13], sn[14], sn[15]);
449}
450
451static int hpsa_find_target_lun(struct ctlr_info *h,
452 unsigned char scsi3addr[], int bus, int *target, int *lun)
453{
454 /* finds an unused bus, target, lun for a new physical device
455 * assumes h->devlock is held
456 */
457 int i, found = 0;
458 DECLARE_BITMAP(lun_taken, HPSA_MAX_SCSI_DEVS_PER_HBA);
459
460 memset(&lun_taken[0], 0, HPSA_MAX_SCSI_DEVS_PER_HBA >> 3);
461
462 for (i = 0; i < h->ndevices; i++) {
463 if (h->dev[i]->bus == bus && h->dev[i]->target != -1)
464 set_bit(h->dev[i]->target, lun_taken);
465 }
466
467 for (i = 0; i < HPSA_MAX_SCSI_DEVS_PER_HBA; i++) {
468 if (!test_bit(i, lun_taken)) {
469 /* *bus = 1; */
470 *target = i;
471 *lun = 0;
472 found = 1;
473 break;
474 }
475 }
476 return !found;
477}
478
479/* Add an entry into h->dev[] array. */
480static int hpsa_scsi_add_entry(struct ctlr_info *h, int hostno,
481 struct hpsa_scsi_dev_t *device,
482 struct hpsa_scsi_dev_t *added[], int *nadded)
483{
484 /* assumes h->devlock is held */
485 int n = h->ndevices;
486 int i;
487 unsigned char addr1[8], addr2[8];
488 struct hpsa_scsi_dev_t *sd;
489
490 if (n >= HPSA_MAX_SCSI_DEVS_PER_HBA) {
491 dev_err(&h->pdev->dev, "too many devices, some will be "
492 "inaccessible.\n");
493 return -1;
494 }
495
496 /* physical devices do not have lun or target assigned until now. */
497 if (device->lun != -1)
498 /* Logical device, lun is already assigned. */
499 goto lun_assigned;
500
501 /* If this device a non-zero lun of a multi-lun device
502 * byte 4 of the 8-byte LUN addr will contain the logical
503 * unit no, zero otherise.
504 */
505 if (device->scsi3addr[4] == 0) {
506 /* This is not a non-zero lun of a multi-lun device */
507 if (hpsa_find_target_lun(h, device->scsi3addr,
508 device->bus, &device->target, &device->lun) != 0)
509 return -1;
510 goto lun_assigned;
511 }
512
513 /* This is a non-zero lun of a multi-lun device.
514 * Search through our list and find the device which
515 * has the same 8 byte LUN address, excepting byte 4.
516 * Assign the same bus and target for this new LUN.
517 * Use the logical unit number from the firmware.
518 */
519 memcpy(addr1, device->scsi3addr, 8);
520 addr1[4] = 0;
521 for (i = 0; i < n; i++) {
522 sd = h->dev[i];
523 memcpy(addr2, sd->scsi3addr, 8);
524 addr2[4] = 0;
525 /* differ only in byte 4? */
526 if (memcmp(addr1, addr2, 8) == 0) {
527 device->bus = sd->bus;
528 device->target = sd->target;
529 device->lun = device->scsi3addr[4];
530 break;
531 }
532 }
533 if (device->lun == -1) {
534 dev_warn(&h->pdev->dev, "physical device with no LUN=0,"
535 " suspect firmware bug or unsupported hardware "
536 "configuration.\n");
537 return -1;
538 }
539
540lun_assigned:
541
542 h->dev[n] = device;
543 h->ndevices++;
544 added[*nadded] = device;
545 (*nadded)++;
546
547 /* initially, (before registering with scsi layer) we don't
548 * know our hostno and we don't want to print anything first
549 * time anyway (the scsi layer's inquiries will show that info)
550 */
551 /* if (hostno != -1) */
552 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d added.\n",
553 scsi_device_type(device->devtype), hostno,
554 device->bus, device->target, device->lun);
555 return 0;
556}
557
2a8ccf31
SC		 558/* Replace an entry from h->dev[] array. */
559static void hpsa_scsi_replace_entry(struct ctlr_info *h, int hostno,
560 int entry, struct hpsa_scsi_dev_t *new_entry,
561 struct hpsa_scsi_dev_t *added[], int *nadded,
562 struct hpsa_scsi_dev_t *removed[], int *nremoved)
563{
564 /* assumes h->devlock is held */
565 BUG_ON(entry < 0 || entry >= HPSA_MAX_SCSI_DEVS_PER_HBA);
566 removed[*nremoved] = h->dev[entry];
567 (*nremoved)++;
568 h->dev[entry] = new_entry;
569 added[*nadded] = new_entry;
570 (*nadded)++;
571 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d changed.\n",
572 scsi_device_type(new_entry->devtype), hostno, new_entry->bus,
573 new_entry->target, new_entry->lun);
574}
575
edd16368
SC		 576/* Remove an entry from h->dev[] array. */
577static void hpsa_scsi_remove_entry(struct ctlr_info *h, int hostno, int entry,
578 struct hpsa_scsi_dev_t *removed[], int *nremoved)
579{
580 /* assumes h->devlock is held */
581 int i;
582 struct hpsa_scsi_dev_t *sd;
583
b2ed4f79 584 BUG_ON(entry < 0 || entry >= HPSA_MAX_SCSI_DEVS_PER_HBA);
edd16368
SC		 585
586 sd = h->dev[entry];
587 removed[*nremoved] = h->dev[entry];
588 (*nremoved)++;
589
590 for (i = entry; i < h->ndevices-1; i++)
591 h->dev[i] = h->dev[i+1];
592 h->ndevices--;
593 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d removed.\n",
594 scsi_device_type(sd->devtype), hostno, sd->bus, sd->target,
595 sd->lun);
596}
597
598#define SCSI3ADDR_EQ(a, b) ( \
599 (a)[7] == (b)[7] && \
600 (a)[6] == (b)[6] && \
601 (a)[5] == (b)[5] && \
602 (a)[4] == (b)[4] && \
603 (a)[3] == (b)[3] && \
604 (a)[2] == (b)[2] && \
605 (a)[1] == (b)[1] && \
606 (a)[0] == (b)[0])
607
608static void fixup_botched_add(struct ctlr_info *h,
609 struct hpsa_scsi_dev_t *added)
610{
611 /* called when scsi_add_device fails in order to re-adjust
612 * h->dev[] to match the mid layer's view.
613 */
614 unsigned long flags;
615 int i, j;
616
617 spin_lock_irqsave(&h->lock, flags);
618 for (i = 0; i < h->ndevices; i++) {
619 if (h->dev[i] == added) {
620 for (j = i; j < h->ndevices-1; j++)
621 h->dev[j] = h->dev[j+1];
622 h->ndevices--;
623 break;
624 }
625 }
626 spin_unlock_irqrestore(&h->lock, flags);
627 kfree(added);
628}
629
630static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1,
631 struct hpsa_scsi_dev_t *dev2)
632{
633 if ((is_logical_dev_addr_mode(dev1->scsi3addr) ||
634 (dev1->lun != -1 && dev2->lun != -1)) &&
635 dev1->devtype != 0x0C)
636 return (memcmp(dev1, dev2, sizeof(*dev1)) == 0);
637
638 /* we compare everything except lun and target as these
639 * are not yet assigned. Compare parts likely
640 * to differ first
641 */
642 if (memcmp(dev1->scsi3addr, dev2->scsi3addr,
643 sizeof(dev1->scsi3addr)) != 0)
644 return 0;
645 if (memcmp(dev1->device_id, dev2->device_id,
646 sizeof(dev1->device_id)) != 0)
647 return 0;
648 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0)
649 return 0;
650 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0)
651 return 0;
652 if (memcmp(dev1->revision, dev2->revision, sizeof(dev1->revision)) != 0)
653 return 0;
654 if (dev1->devtype != dev2->devtype)
655 return 0;
656 if (dev1->raid_level != dev2->raid_level)
657 return 0;
658 if (dev1->bus != dev2->bus)
659 return 0;
660 return 1;
661}
662
663/* Find needle in haystack. If exact match found, return DEVICE_SAME,
664 * and return needle location in *index. If scsi3addr matches, but not
665 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
666 * location in *index. If needle not found, return DEVICE_NOT_FOUND.
667 */
668static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle,
669 struct hpsa_scsi_dev_t *haystack[], int haystack_size,
670 int *index)
671{
672 int i;
673#define DEVICE_NOT_FOUND 0
674#define DEVICE_CHANGED 1
675#define DEVICE_SAME 2
676 for (i = 0; i < haystack_size; i++) {
23231048
SC		 677 if (haystack[i] == NULL) /* previously removed. */
678 continue;
edd16368
SC		 679 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) {
680 *index = i;
681 if (device_is_the_same(needle, haystack[i]))
682 return DEVICE_SAME;
683 else
684 return DEVICE_CHANGED;
685 }
686 }
687 *index = -1;
688 return DEVICE_NOT_FOUND;
689}
690
4967bd3e 691static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno,
edd16368
SC		 692 struct hpsa_scsi_dev_t *sd[], int nsds)
693{
694 /* sd contains scsi3 addresses and devtypes, and inquiry
695 * data. This function takes what's in sd to be the current
696 * reality and updates h->dev[] to reflect that reality.
697 */
698 int i, entry, device_change, changes = 0;
699 struct hpsa_scsi_dev_t *csd;
700 unsigned long flags;
701 struct hpsa_scsi_dev_t **added, **removed;
702 int nadded, nremoved;
703 struct Scsi_Host *sh = NULL;
704
705 added = kzalloc(sizeof(*added) * HPSA_MAX_SCSI_DEVS_PER_HBA,
706 GFP_KERNEL);
707 removed = kzalloc(sizeof(*removed) * HPSA_MAX_SCSI_DEVS_PER_HBA,
708 GFP_KERNEL);
709
710 if (!added || !removed) {
711 dev_warn(&h->pdev->dev, "out of memory in "
712 "adjust_hpsa_scsi_table\n");
713 goto free_and_out;
714 }
715
716 spin_lock_irqsave(&h->devlock, flags);
717
718 /* find any devices in h->dev[] that are not in
719 * sd[] and remove them from h->dev[], and for any
720 * devices which have changed, remove the old device
721 * info and add the new device info.
722 */
723 i = 0;
724 nremoved = 0;
725 nadded = 0;
726 while (i < h->ndevices) {
727 csd = h->dev[i];
728 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry);
729 if (device_change == DEVICE_NOT_FOUND) {
730 changes++;
731 hpsa_scsi_remove_entry(h, hostno, i,
732 removed, &nremoved);
733 continue; /* remove ^^^, hence i not incremented */
734 } else if (device_change == DEVICE_CHANGED) {
735 changes++;
2a8ccf31
SC		 736 hpsa_scsi_replace_entry(h, hostno, i, sd[entry],
737 added, &nadded, removed, &nremoved);
c7f172dc
SC		 738 /* Set it to NULL to prevent it from being freed
739 * at the bottom of hpsa_update_scsi_devices()
740 */
741 sd[entry] = NULL;
edd16368
SC		 742 }
743 i++;
744 }
745
746 /* Now, make sure every device listed in sd[] is also
747 * listed in h->dev[], adding them if they aren't found
748 */
749
750 for (i = 0; i < nsds; i++) {
751 if (!sd[i]) /* if already added above. */
752 continue;
753 device_change = hpsa_scsi_find_entry(sd[i], h->dev,
754 h->ndevices, &entry);
755 if (device_change == DEVICE_NOT_FOUND) {
756 changes++;
757 if (hpsa_scsi_add_entry(h, hostno, sd[i],
758 added, &nadded) != 0)
759 break;
760 sd[i] = NULL; /* prevent from being freed later. */
761 } else if (device_change == DEVICE_CHANGED) {
762 /* should never happen... */
763 changes++;
764 dev_warn(&h->pdev->dev,
765 "device unexpectedly changed.\n");
766 /* but if it does happen, we just ignore that device */
767 }
768 }
769 spin_unlock_irqrestore(&h->devlock, flags);
770
771 /* Don't notify scsi mid layer of any changes the first time through
772 * (or if there are no changes) scsi_scan_host will do it later the
773 * first time through.
774 */
775 if (hostno == -1 || !changes)
776 goto free_and_out;
777
778 sh = h->scsi_host;
779 /* Notify scsi mid layer of any removed devices */
780 for (i = 0; i < nremoved; i++) {
781 struct scsi_device *sdev =
782 scsi_device_lookup(sh, removed[i]->bus,
783 removed[i]->target, removed[i]->lun);
784 if (sdev != NULL) {
785 scsi_remove_device(sdev);
786 scsi_device_put(sdev);
787 } else {
788 /* We don't expect to get here.
789 * future cmds to this device will get selection
790 * timeout as if the device was gone.
791 */
792 dev_warn(&h->pdev->dev, "didn't find c%db%dt%dl%d "
793 " for removal.", hostno, removed[i]->bus,
794 removed[i]->target, removed[i]->lun);
795 }
796 kfree(removed[i]);
797 removed[i] = NULL;
798 }
799
800 /* Notify scsi mid layer of any added devices */
801 for (i = 0; i < nadded; i++) {
802 if (scsi_add_device(sh, added[i]->bus,
803 added[i]->target, added[i]->lun) == 0)
804 continue;
805 dev_warn(&h->pdev->dev, "scsi_add_device c%db%dt%dl%d failed, "
806 "device not added.\n", hostno, added[i]->bus,
807 added[i]->target, added[i]->lun);
808 /* now we have to remove it from h->dev,
809 * since it didn't get added to scsi mid layer
810 */
811 fixup_botched_add(h, added[i]);
812 }
813
814free_and_out:
815 kfree(added);
816 kfree(removed);
edd16368
SC		 817}
818
819/*
820 * Lookup bus/target/lun and retrun corresponding struct hpsa_scsi_dev_t *
821 * Assume's h->devlock is held.
822 */
823static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h,
824 int bus, int target, int lun)
825{
826 int i;
827 struct hpsa_scsi_dev_t *sd;
828
829 for (i = 0; i < h->ndevices; i++) {
830 sd = h->dev[i];
831 if (sd->bus == bus && sd->target == target && sd->lun == lun)
832 return sd;
833 }
834 return NULL;
835}
836
837/* link sdev->hostdata to our per-device structure. */
838static int hpsa_slave_alloc(struct scsi_device *sdev)
839{
840 struct hpsa_scsi_dev_t *sd;
841 unsigned long flags;
842 struct ctlr_info *h;
843
844 h = sdev_to_hba(sdev);
845 spin_lock_irqsave(&h->devlock, flags);
846 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev),
847 sdev_id(sdev), sdev->lun);
848 if (sd != NULL)
849 sdev->hostdata = sd;
850 spin_unlock_irqrestore(&h->devlock, flags);
851 return 0;
852}
853
854static void hpsa_slave_destroy(struct scsi_device *sdev)
855{
bcc44255 856 /* nothing to do. */
edd16368
SC		 857}
858
859static void hpsa_scsi_setup(struct ctlr_info *h)
860{
861 h->ndevices = 0;
862 h->scsi_host = NULL;
863 spin_lock_init(&h->devlock);
edd16368
SC		 864}
865
33a2ffce
SC		 866static void hpsa_free_sg_chain_blocks(struct ctlr_info *h)
867{
868 int i;
869
870 if (!h->cmd_sg_list)
871 return;
872 for (i = 0; i < h->nr_cmds; i++) {
873 kfree(h->cmd_sg_list[i]);
874 h->cmd_sg_list[i] = NULL;
875 }
876 kfree(h->cmd_sg_list);
877 h->cmd_sg_list = NULL;
878}
879
880static int hpsa_allocate_sg_chain_blocks(struct ctlr_info *h)
881{
882 int i;
883
884 if (h->chainsize <= 0)
885 return 0;
886
887 h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds,
888 GFP_KERNEL);
889 if (!h->cmd_sg_list)
890 return -ENOMEM;
891 for (i = 0; i < h->nr_cmds; i++) {
892 h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) *
893 h->chainsize, GFP_KERNEL);
894 if (!h->cmd_sg_list[i])
895 goto clean;
896 }
897 return 0;
898
899clean:
900 hpsa_free_sg_chain_blocks(h);
901 return -ENOMEM;
902}
903
904static void hpsa_map_sg_chain_block(struct ctlr_info *h,
905 struct CommandList *c)
906{
907 struct SGDescriptor *chain_sg, *chain_block;
908 u64 temp64;
909
910 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
911 chain_block = h->cmd_sg_list[c->cmdindex];
912 chain_sg->Ext = HPSA_SG_CHAIN;
913 chain_sg->Len = sizeof(*chain_sg) *
914 (c->Header.SGTotal - h->max_cmd_sg_entries);
915 temp64 = pci_map_single(h->pdev, chain_block, chain_sg->Len,
916 PCI_DMA_TODEVICE);
917 chain_sg->Addr.lower = (u32) (temp64 & 0x0FFFFFFFFULL);
918 chain_sg->Addr.upper = (u32) ((temp64 >> 32) & 0x0FFFFFFFFULL);
919}
920
921static void hpsa_unmap_sg_chain_block(struct ctlr_info *h,
922 struct CommandList *c)
923{
924 struct SGDescriptor *chain_sg;
925 union u64bit temp64;
926
927 if (c->Header.SGTotal <= h->max_cmd_sg_entries)
928 return;
929
930 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
931 temp64.val32.lower = chain_sg->Addr.lower;
932 temp64.val32.upper = chain_sg->Addr.upper;
933 pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE);
934}
935
edd16368 936static void complete_scsi_command(struct CommandList *cp,
01a02ffc 937 int timeout, u32 tag)
edd16368
SC		 938{
939 struct scsi_cmnd *cmd;
940 struct ctlr_info *h;
941 struct ErrorInfo *ei;
942
943 unsigned char sense_key;
944 unsigned char asc; /* additional sense code */
945 unsigned char ascq; /* additional sense code qualifier */
946
947 ei = cp->err_info;
948 cmd = (struct scsi_cmnd *) cp->scsi_cmd;
949 h = cp->h;
950
951 scsi_dma_unmap(cmd); /* undo the DMA mappings */
33a2ffce
SC		 952 if (cp->Header.SGTotal > h->max_cmd_sg_entries)
953 hpsa_unmap_sg_chain_block(h, cp);
edd16368
SC		 954
955 cmd->result = (DID_OK << 16); /* host byte */
956 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
5512672f 957 cmd->result |= ei->ScsiStatus;
edd16368
SC		 958
959 /* copy the sense data whether we need to or not. */
960 memcpy(cmd->sense_buffer, ei->SenseInfo,
961 ei->SenseLen > SCSI_SENSE_BUFFERSIZE ?
962 SCSI_SENSE_BUFFERSIZE :
963 ei->SenseLen);
964 scsi_set_resid(cmd, ei->ResidualCnt);
965
966 if (ei->CommandStatus == 0) {
967 cmd->scsi_done(cmd);
968 cmd_free(h, cp);
969 return;
970 }
971
972 /* an error has occurred */
973 switch (ei->CommandStatus) {
974
975 case CMD_TARGET_STATUS:
976 if (ei->ScsiStatus) {
977 /* Get sense key */
978 sense_key = 0xf & ei->SenseInfo[2];
979 /* Get additional sense code */
980 asc = ei->SenseInfo[12];
981 /* Get addition sense code qualifier */
982 ascq = ei->SenseInfo[13];
983 }
984
985 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
986 if (check_for_unit_attention(h, cp)) {
987 cmd->result = DID_SOFT_ERROR << 16;
988 break;
989 }
990 if (sense_key == ILLEGAL_REQUEST) {
991 /*
992 * SCSI REPORT_LUNS is commonly unsupported on
993 * Smart Array. Suppress noisy complaint.
994 */
995 if (cp->Request.CDB[0] == REPORT_LUNS)
996 break;
997
998 /* If ASC/ASCQ indicate Logical Unit
999 * Not Supported condition,
1000 */
1001 if ((asc == 0x25) && (ascq == 0x0)) {
1002 dev_warn(&h->pdev->dev, "cp %p "
1003 "has check condition\n", cp);
1004 break;
1005 }
1006 }
1007
1008 if (sense_key == NOT_READY) {
1009 /* If Sense is Not Ready, Logical Unit
1010 * Not ready, Manual Intervention
1011 * required
1012 */
1013 if ((asc == 0x04) && (ascq == 0x03)) {
edd16368
SC		 1014 dev_warn(&h->pdev->dev, "cp %p "
1015 "has check condition: unit "
1016 "not ready, manual "
1017 "intervention required\n", cp);
1018 break;
1019 }
1020 }
1d3b3609
MG		 1021 if (sense_key == ABORTED_COMMAND) {
1022 /* Aborted command is retryable */
1023 dev_warn(&h->pdev->dev, "cp %p "
1024 "has check condition: aborted command: "
1025 "ASC: 0x%x, ASCQ: 0x%x\n",
1026 cp, asc, ascq);
1027 cmd->result = DID_SOFT_ERROR << 16;
1028 break;
1029 }
edd16368
SC		 1030 /* Must be some other type of check condition */
1031 dev_warn(&h->pdev->dev, "cp %p has check condition: "
1032 "unknown type: "
1033 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1034 "Returning result: 0x%x, "
1035 "cmd=[%02x %02x %02x %02x %02x "
807be732 1036 "%02x %02x %02x %02x %02x %02x "
edd16368
SC		 1037 "%02x %02x %02x %02x %02x]\n",
1038 cp, sense_key, asc, ascq,
1039 cmd->result,
1040 cmd->cmnd[0], cmd->cmnd[1],
1041 cmd->cmnd[2], cmd->cmnd[3],
1042 cmd->cmnd[4], cmd->cmnd[5],
1043 cmd->cmnd[6], cmd->cmnd[7],
807be732
MM		 1044 cmd->cmnd[8], cmd->cmnd[9],
1045 cmd->cmnd[10], cmd->cmnd[11],
1046 cmd->cmnd[12], cmd->cmnd[13],
1047 cmd->cmnd[14], cmd->cmnd[15]);
edd16368
SC		 1048 break;
1049 }
1050
1051
1052 /* Problem was not a check condition
1053 * Pass it up to the upper layers...
1054 */
1055 if (ei->ScsiStatus) {
1056 dev_warn(&h->pdev->dev, "cp %p has status 0x%x "
1057 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1058 "Returning result: 0x%x\n",
1059 cp, ei->ScsiStatus,
1060 sense_key, asc, ascq,
1061 cmd->result);
1062 } else { /* scsi status is zero??? How??? */
1063 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. "
1064 "Returning no connection.\n", cp),
1065
1066 /* Ordinarily, this case should never happen,
1067 * but there is a bug in some released firmware
1068 * revisions that allows it to happen if, for
1069 * example, a 4100 backplane loses power and
1070 * the tape drive is in it. We assume that
1071 * it's a fatal error of some kind because we
1072 * can't show that it wasn't. We will make it
1073 * look like selection timeout since that is
1074 * the most common reason for this to occur,
1075 * and it's severe enough.
1076 */
1077
1078 cmd->result = DID_NO_CONNECT << 16;
1079 }
1080 break;
1081
1082 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
1083 break;
1084 case CMD_DATA_OVERRUN:
1085 dev_warn(&h->pdev->dev, "cp %p has"
1086 " completed with data overrun "
1087 "reported\n", cp);
1088 break;
1089 case CMD_INVALID: {
1090 /* print_bytes(cp, sizeof(*cp), 1, 0);
1091 print_cmd(cp); */
1092 /* We get CMD_INVALID if you address a non-existent device
1093 * instead of a selection timeout (no response). You will
1094 * see this if you yank out a drive, then try to access it.
1095 * This is kind of a shame because it means that any other
1096 * CMD_INVALID (e.g. driver bug) will get interpreted as a
1097 * missing target. */
1098 cmd->result = DID_NO_CONNECT << 16;
1099 }
1100 break;
1101 case CMD_PROTOCOL_ERR:
1102 dev_warn(&h->pdev->dev, "cp %p has "
1103 "protocol error \n", cp);
1104 break;
1105 case CMD_HARDWARE_ERR:
1106 cmd->result = DID_ERROR << 16;
1107 dev_warn(&h->pdev->dev, "cp %p had hardware error\n", cp);
1108 break;
1109 case CMD_CONNECTION_LOST:
1110 cmd->result = DID_ERROR << 16;
1111 dev_warn(&h->pdev->dev, "cp %p had connection lost\n", cp);
1112 break;
1113 case CMD_ABORTED:
1114 cmd->result = DID_ABORT << 16;
1115 dev_warn(&h->pdev->dev, "cp %p was aborted with status 0x%x\n",
1116 cp, ei->ScsiStatus);
1117 break;
1118 case CMD_ABORT_FAILED:
1119 cmd->result = DID_ERROR << 16;
1120 dev_warn(&h->pdev->dev, "cp %p reports abort failed\n", cp);
1121 break;
1122 case CMD_UNSOLICITED_ABORT:
5f0325ab 1123 cmd->result = DID_RESET << 16;
edd16368
SC		 1124 dev_warn(&h->pdev->dev, "cp %p aborted do to an unsolicited "
1125 "abort\n", cp);
1126 break;
1127 case CMD_TIMEOUT:
1128 cmd->result = DID_TIME_OUT << 16;
1129 dev_warn(&h->pdev->dev, "cp %p timedout\n", cp);
1130 break;
1131 default:
1132 cmd->result = DID_ERROR << 16;
1133 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n",
1134 cp, ei->CommandStatus);
1135 }
1136 cmd->scsi_done(cmd);
1137 cmd_free(h, cp);
1138}
1139
1140static int hpsa_scsi_detect(struct ctlr_info *h)
1141{
1142 struct Scsi_Host *sh;
1143 int error;
1144
1145 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h));
1146 if (sh == NULL)
1147 goto fail;
1148
1149 sh->io_port = 0;
1150 sh->n_io_port = 0;
1151 sh->this_id = -1;
1152 sh->max_channel = 3;
1153 sh->max_cmd_len = MAX_COMMAND_SIZE;
1154 sh->max_lun = HPSA_MAX_LUN;
1155 sh->max_id = HPSA_MAX_LUN;
303932fd
DB		 1156 sh->can_queue = h->nr_cmds;
1157 sh->cmd_per_lun = h->nr_cmds;
33a2ffce 1158 sh->sg_tablesize = h->maxsgentries;
edd16368
SC		 1159 h->scsi_host = sh;
1160 sh->hostdata[0] = (unsigned long) h;
303932fd 1161 sh->irq = h->intr[PERF_MODE_INT];
edd16368
SC		 1162 sh->unique_id = sh->irq;
1163 error = scsi_add_host(sh, &h->pdev->dev);
1164 if (error)
1165 goto fail_host_put;
1166 scsi_scan_host(sh);
1167 return 0;
1168
1169 fail_host_put:
1170 dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_add_host"
1171 " failed for controller %d\n", h->ctlr);
1172 scsi_host_put(sh);
ecd9aad4 1173 return error;
edd16368
SC		 1174 fail:
1175 dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_host_alloc"
1176 " failed for controller %d\n", h->ctlr);
ecd9aad4 1177 return -ENOMEM;
edd16368
SC		 1178}
1179
1180static void hpsa_pci_unmap(struct pci_dev *pdev,
1181 struct CommandList *c, int sg_used, int data_direction)
1182{
1183 int i;
1184 union u64bit addr64;
1185
1186 for (i = 0; i < sg_used; i++) {
1187 addr64.val32.lower = c->SG[i].Addr.lower;
1188 addr64.val32.upper = c->SG[i].Addr.upper;
1189 pci_unmap_single(pdev, (dma_addr_t) addr64.val, c->SG[i].Len,
1190 data_direction);
1191 }
1192}
1193
1194static void hpsa_map_one(struct pci_dev *pdev,
1195 struct CommandList *cp,
1196 unsigned char *buf,
1197 size_t buflen,
1198 int data_direction)
1199{
01a02ffc 1200 u64 addr64;
edd16368
SC		 1201
1202 if (buflen == 0 || data_direction == PCI_DMA_NONE) {
1203 cp->Header.SGList = 0;
1204 cp->Header.SGTotal = 0;
1205 return;
1206 }
1207
01a02ffc 1208 addr64 = (u64) pci_map_single(pdev, buf, buflen, data_direction);
edd16368 1209 cp->SG[0].Addr.lower =
01a02ffc 1210 (u32) (addr64 & (u64) 0x00000000FFFFFFFF);
edd16368 1211 cp->SG[0].Addr.upper =
01a02ffc 1212 (u32) ((addr64 >> 32) & (u64) 0x00000000FFFFFFFF);
edd16368 1213 cp->SG[0].Len = buflen;
01a02ffc
SC		 1214 cp->Header.SGList = (u8) 1; /* no. SGs contig in this cmd */
1215 cp->Header.SGTotal = (u16) 1; /* total sgs in this cmd list */
edd16368
SC		 1216}
1217
1218static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h,
1219 struct CommandList *c)
1220{
1221 DECLARE_COMPLETION_ONSTACK(wait);
1222
1223 c->waiting = &wait;
1224 enqueue_cmd_and_start_io(h, c);
1225 wait_for_completion(&wait);
1226}
1227
1228static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
1229 struct CommandList *c, int data_direction)
1230{
1231 int retry_count = 0;
1232
1233 do {
1234 memset(c->err_info, 0, sizeof(c->err_info));
1235 hpsa_scsi_do_simple_cmd_core(h, c);
1236 retry_count++;
1237 } while (check_for_unit_attention(h, c) && retry_count <= 3);
1238 hpsa_pci_unmap(h->pdev, c, 1, data_direction);
1239}
1240
1241static void hpsa_scsi_interpret_error(struct CommandList *cp)
1242{
1243 struct ErrorInfo *ei;
1244 struct device *d = &cp->h->pdev->dev;
1245
1246 ei = cp->err_info;
1247 switch (ei->CommandStatus) {
1248 case CMD_TARGET_STATUS:
1249 dev_warn(d, "cmd %p has completed with errors\n", cp);
1250 dev_warn(d, "cmd %p has SCSI Status = %x\n", cp,
1251 ei->ScsiStatus);
1252 if (ei->ScsiStatus == 0)
1253 dev_warn(d, "SCSI status is abnormally zero. "
1254 "(probably indicates selection timeout "
1255 "reported incorrectly due to a known "
1256 "firmware bug, circa July, 2001.)\n");
1257 break;
1258 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
1259 dev_info(d, "UNDERRUN\n");
1260 break;
1261 case CMD_DATA_OVERRUN:
1262 dev_warn(d, "cp %p has completed with data overrun\n", cp);
1263 break;
1264 case CMD_INVALID: {
1265 /* controller unfortunately reports SCSI passthru's
1266 * to non-existent targets as invalid commands.
1267 */
1268 dev_warn(d, "cp %p is reported invalid (probably means "
1269 "target device no longer present)\n", cp);
1270 /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0);
1271 print_cmd(cp); */
1272 }
1273 break;
1274 case CMD_PROTOCOL_ERR:
1275 dev_warn(d, "cp %p has protocol error \n", cp);
1276 break;
1277 case CMD_HARDWARE_ERR:
1278 /* cmd->result = DID_ERROR << 16; */
1279 dev_warn(d, "cp %p had hardware error\n", cp);
1280 break;
1281 case CMD_CONNECTION_LOST:
1282 dev_warn(d, "cp %p had connection lost\n", cp);
1283 break;
1284 case CMD_ABORTED:
1285 dev_warn(d, "cp %p was aborted\n", cp);
1286 break;
1287 case CMD_ABORT_FAILED:
1288 dev_warn(d, "cp %p reports abort failed\n", cp);
1289 break;
1290 case CMD_UNSOLICITED_ABORT:
1291 dev_warn(d, "cp %p aborted due to an unsolicited abort\n", cp);
1292 break;
1293 case CMD_TIMEOUT:
1294 dev_warn(d, "cp %p timed out\n", cp);
1295 break;
1296 default:
1297 dev_warn(d, "cp %p returned unknown status %x\n", cp,
1298 ei->CommandStatus);
1299 }
1300}
1301
1302static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
1303 unsigned char page, unsigned char *buf,
1304 unsigned char bufsize)
1305{
1306 int rc = IO_OK;
1307 struct CommandList *c;
1308 struct ErrorInfo *ei;
1309
1310 c = cmd_special_alloc(h);
1311
1312 if (c == NULL) { /* trouble... */
1313 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
ecd9aad4 1314 return -ENOMEM;
edd16368
SC		 1315 }
1316
1317 fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, page, scsi3addr, TYPE_CMD);
1318 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE);
1319 ei = c->err_info;
1320 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
1321 hpsa_scsi_interpret_error(c);
1322 rc = -1;
1323 }
1324 cmd_special_free(h, c);
1325 return rc;
1326}
1327
1328static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr)
1329{
1330 int rc = IO_OK;
1331 struct CommandList *c;
1332 struct ErrorInfo *ei;
1333
1334 c = cmd_special_alloc(h);
1335
1336 if (c == NULL) { /* trouble... */
1337 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
e9ea04a6 1338 return -ENOMEM;
edd16368
SC		 1339 }
1340
1341 fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, scsi3addr, TYPE_MSG);
1342 hpsa_scsi_do_simple_cmd_core(h, c);
1343 /* no unmap needed here because no data xfer. */
1344
1345 ei = c->err_info;
1346 if (ei->CommandStatus != 0) {
1347 hpsa_scsi_interpret_error(c);
1348 rc = -1;
1349 }
1350 cmd_special_free(h, c);
1351 return rc;
1352}
1353
1354static void hpsa_get_raid_level(struct ctlr_info *h,
1355 unsigned char *scsi3addr, unsigned char *raid_level)
1356{
1357 int rc;
1358 unsigned char *buf;
1359
1360 *raid_level = RAID_UNKNOWN;
1361 buf = kzalloc(64, GFP_KERNEL);
1362 if (!buf)
1363 return;
1364 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0xC1, buf, 64);
1365 if (rc == 0)
1366 *raid_level = buf[8];
1367 if (*raid_level > RAID_UNKNOWN)
1368 *raid_level = RAID_UNKNOWN;
1369 kfree(buf);
1370 return;
1371}
1372
1373/* Get the device id from inquiry page 0x83 */
1374static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr,
1375 unsigned char *device_id, int buflen)
1376{
1377 int rc;
1378 unsigned char *buf;
1379
1380 if (buflen > 16)
1381 buflen = 16;
1382 buf = kzalloc(64, GFP_KERNEL);
1383 if (!buf)
1384 return -1;
1385 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0x83, buf, 64);
1386 if (rc == 0)
1387 memcpy(device_id, &buf[8], buflen);
1388 kfree(buf);
1389 return rc != 0;
1390}
1391
1392static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
1393 struct ReportLUNdata *buf, int bufsize,
1394 int extended_response)
1395{
1396 int rc = IO_OK;
1397 struct CommandList *c;
1398 unsigned char scsi3addr[8];
1399 struct ErrorInfo *ei;
1400
1401 c = cmd_special_alloc(h);
1402 if (c == NULL) { /* trouble... */
1403 dev_err(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
1404 return -1;
1405 }
e89c0ae7
SC		 1406 /* address the controller */
1407 memset(scsi3addr, 0, sizeof(scsi3addr));
edd16368
SC		 1408 fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h,
1409 buf, bufsize, 0, scsi3addr, TYPE_CMD);
1410 if (extended_response)
1411 c->Request.CDB[1] = extended_response;
1412 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE);
1413 ei = c->err_info;
1414 if (ei->CommandStatus != 0 &&
1415 ei->CommandStatus != CMD_DATA_UNDERRUN) {
1416 hpsa_scsi_interpret_error(c);
1417 rc = -1;
1418 }
1419 cmd_special_free(h, c);
1420 return rc;
1421}
1422
1423static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
1424 struct ReportLUNdata *buf,
1425 int bufsize, int extended_response)
1426{
1427 return hpsa_scsi_do_report_luns(h, 0, buf, bufsize, extended_response);
1428}
1429
1430static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,
1431 struct ReportLUNdata *buf, int bufsize)
1432{
1433 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0);
1434}
1435
1436static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device,
1437 int bus, int target, int lun)
1438{
1439 device->bus = bus;
1440 device->target = target;
1441 device->lun = lun;
1442}
1443
1444static int hpsa_update_device_info(struct ctlr_info *h,
1445 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device)
1446{
1447#define OBDR_TAPE_INQ_SIZE 49
ea6d3bc3 1448 unsigned char *inq_buff;
edd16368 1449
ea6d3bc3 1450 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
edd16368
SC		 1451 if (!inq_buff)
1452 goto bail_out;
1453
edd16368
SC		 1454 /* Do an inquiry to the device to see what it is. */
1455 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
1456 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
1457 /* Inquiry failed (msg printed already) */
1458 dev_err(&h->pdev->dev,
1459 "hpsa_update_device_info: inquiry failed\n");
1460 goto bail_out;
1461 }
1462
edd16368
SC		 1463 this_device->devtype = (inq_buff[0] & 0x1f);
1464 memcpy(this_device->scsi3addr, scsi3addr, 8);
1465 memcpy(this_device->vendor, &inq_buff[8],
1466 sizeof(this_device->vendor));
1467 memcpy(this_device->model, &inq_buff[16],
1468 sizeof(this_device->model));
1469 memcpy(this_device->revision, &inq_buff[32],
1470 sizeof(this_device->revision));
1471 memset(this_device->device_id, 0,
1472 sizeof(this_device->device_id));
1473 hpsa_get_device_id(h, scsi3addr, this_device->device_id,
1474 sizeof(this_device->device_id));
1475
1476 if (this_device->devtype == TYPE_DISK &&
1477 is_logical_dev_addr_mode(scsi3addr))
1478 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level);
1479 else
1480 this_device->raid_level = RAID_UNKNOWN;
1481
1482 kfree(inq_buff);
1483 return 0;
1484
1485bail_out:
1486 kfree(inq_buff);
1487 return 1;
1488}
1489
1490static unsigned char *msa2xxx_model[] = {
1491 "MSA2012",
1492 "MSA2024",
1493 "MSA2312",
1494 "MSA2324",
1495 NULL,
1496};
1497
1498static int is_msa2xxx(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
1499{
1500 int i;
1501
1502 for (i = 0; msa2xxx_model[i]; i++)
1503 if (strncmp(device->model, msa2xxx_model[i],
1504 strlen(msa2xxx_model[i])) == 0)
1505 return 1;
1506 return 0;
1507}
1508
1509/* Helper function to assign bus, target, lun mapping of devices.
1510 * Puts non-msa2xxx logical volumes on bus 0, msa2xxx logical
1511 * volumes on bus 1, physical devices on bus 2. and the hba on bus 3.
1512 * Logical drive target and lun are assigned at this time, but
1513 * physical device lun and target assignment are deferred (assigned
1514 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
1515 */
1516static void figure_bus_target_lun(struct ctlr_info *h,
01a02ffc 1517 u8 *lunaddrbytes, int *bus, int *target, int *lun,
edd16368
SC		 1518 struct hpsa_scsi_dev_t *device)
1519{
01a02ffc 1520 u32 lunid;
edd16368
SC		 1521
1522 if (is_logical_dev_addr_mode(lunaddrbytes)) {
1523 /* logical device */
339b2b14
SC		 1524 if (unlikely(is_scsi_rev_5(h))) {
1525 /* p1210m, logical drives lun assignments
1526 * match SCSI REPORT LUNS data.
1527 */
1528 lunid = le32_to_cpu(*((__le32 *) lunaddrbytes));
edd16368 1529 *bus = 0;
339b2b14
SC		 1530 *target = 0;
1531 *lun = (lunid & 0x3fff) + 1;
1532 } else {
1533 /* not p1210m... */
1534 lunid = le32_to_cpu(*((__le32 *) lunaddrbytes));
1535 if (is_msa2xxx(h, device)) {
1536 /* msa2xxx way, put logicals on bus 1
1537 * and match target/lun numbers box
1538 * reports.
1539 */
1540 *bus = 1;
1541 *target = (lunid >> 16) & 0x3fff;
1542 *lun = lunid & 0x00ff;
1543 } else {
1544 /* Traditional smart array way. */
1545 *bus = 0;
1546 *lun = 0;
1547 *target = lunid & 0x3fff;
1548 }
edd16368
SC		 1549 }
1550 } else {
1551 /* physical device */
1552 if (is_hba_lunid(lunaddrbytes))
339b2b14
SC		 1553 if (unlikely(is_scsi_rev_5(h))) {
1554 *bus = 0; /* put p1210m ctlr at 0,0,0 */
1555 *target = 0;
1556 *lun = 0;
1557 return;
1558 } else
1559 *bus = 3; /* traditional smartarray */
edd16368 1560 else
339b2b14 1561 *bus = 2; /* physical disk */
edd16368
SC		 1562 *target = -1;
1563 *lun = -1; /* we will fill these in later. */
1564 }
1565}
1566
1567/*
1568 * If there is no lun 0 on a target, linux won't find any devices.
1569 * For the MSA2xxx boxes, we have to manually detect the enclosure
1570 * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report
1571 * it for some reason. *tmpdevice is the target we're adding,
1572 * this_device is a pointer into the current element of currentsd[]
1573 * that we're building up in update_scsi_devices(), below.
1574 * lunzerobits is a bitmap that tracks which targets already have a
1575 * lun 0 assigned.
1576 * Returns 1 if an enclosure was added, 0 if not.
1577 */
1578static int add_msa2xxx_enclosure_device(struct ctlr_info *h,
1579 struct hpsa_scsi_dev_t *tmpdevice,
01a02ffc 1580 struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes,
edd16368
SC		 1581 int bus, int target, int lun, unsigned long lunzerobits[],
1582 int *nmsa2xxx_enclosures)
1583{
1584 unsigned char scsi3addr[8];
1585
1586 if (test_bit(target, lunzerobits))
1587 return 0; /* There is already a lun 0 on this target. */
1588
1589 if (!is_logical_dev_addr_mode(lunaddrbytes))
1590 return 0; /* It's the logical targets that may lack lun 0. */
1591
1592 if (!is_msa2xxx(h, tmpdevice))
1593 return 0; /* It's only the MSA2xxx that have this problem. */
1594
1595 if (lun == 0) /* if lun is 0, then obviously we have a lun 0. */
1596 return 0;
1597
1598 if (is_hba_lunid(scsi3addr))
1599 return 0; /* Don't add the RAID controller here. */
1600
339b2b14
SC		 1601 if (is_scsi_rev_5(h))
1602 return 0; /* p1210m doesn't need to do this. */
1603
edd16368
SC		 1604#define MAX_MSA2XXX_ENCLOSURES 32
1605 if (*nmsa2xxx_enclosures >= MAX_MSA2XXX_ENCLOSURES) {
1606 dev_warn(&h->pdev->dev, "Maximum number of MSA2XXX "
1607 "enclosures exceeded. Check your hardware "
1608 "configuration.");
1609 return 0;
1610 }
1611
1612 memset(scsi3addr, 0, 8);
1613 scsi3addr[3] = target;
1614 if (hpsa_update_device_info(h, scsi3addr, this_device))
1615 return 0;
1616 (*nmsa2xxx_enclosures)++;
1617 hpsa_set_bus_target_lun(this_device, bus, target, 0);
1618 set_bit(target, lunzerobits);
1619 return 1;
1620}
1621
1622/*
1623 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
1624 * logdev. The number of luns in physdev and logdev are returned in
1625 * *nphysicals and *nlogicals, respectively.
1626 * Returns 0 on success, -1 otherwise.
1627 */
1628static int hpsa_gather_lun_info(struct ctlr_info *h,
1629 int reportlunsize,
01a02ffc
SC		 1630 struct ReportLUNdata *physdev, u32 *nphysicals,
1631 struct ReportLUNdata *logdev, u32 *nlogicals)
edd16368
SC		 1632{
1633 if (hpsa_scsi_do_report_phys_luns(h, physdev, reportlunsize, 0)) {
1634 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
1635 return -1;
1636 }
6df1e954 1637 *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 8;
edd16368
SC		 1638 if (*nphysicals > HPSA_MAX_PHYS_LUN) {
1639 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded."
1640 " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
1641 *nphysicals - HPSA_MAX_PHYS_LUN);
1642 *nphysicals = HPSA_MAX_PHYS_LUN;
1643 }
1644 if (hpsa_scsi_do_report_log_luns(h, logdev, reportlunsize)) {
1645 dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
1646 return -1;
1647 }
6df1e954 1648 *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8;
edd16368
SC		 1649 /* Reject Logicals in excess of our max capability. */
1650 if (*nlogicals > HPSA_MAX_LUN) {
1651 dev_warn(&h->pdev->dev,
1652 "maximum logical LUNs (%d) exceeded. "
1653 "%d LUNs ignored.\n", HPSA_MAX_LUN,
1654 *nlogicals - HPSA_MAX_LUN);
1655 *nlogicals = HPSA_MAX_LUN;
1656 }
1657 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) {
1658 dev_warn(&h->pdev->dev,
1659 "maximum logical + physical LUNs (%d) exceeded. "
1660 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
1661 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN);
1662 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals;
1663 }
1664 return 0;
1665}
1666
339b2b14
SC		 1667u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position, int i,
1668 int nphysicals, int nlogicals, struct ReportLUNdata *physdev_list,
1669 struct ReportLUNdata *logdev_list)
1670{
1671 /* Helper function, figure out where the LUN ID info is coming from
1672 * given index i, lists of physical and logical devices, where in
1673 * the list the raid controller is supposed to appear (first or last)
1674 */
1675
1676 int logicals_start = nphysicals + (raid_ctlr_position == 0);
1677 int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0);
1678
1679 if (i == raid_ctlr_position)
1680 return RAID_CTLR_LUNID;
1681
1682 if (i < logicals_start)
1683 return &physdev_list->LUN[i - (raid_ctlr_position == 0)][0];
1684
1685 if (i < last_device)
1686 return &logdev_list->LUN[i - nphysicals -
1687 (raid_ctlr_position == 0)][0];
1688 BUG();
1689 return NULL;
1690}
1691
edd16368
SC		 1692static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno)
1693{
1694 /* the idea here is we could get notified
1695 * that some devices have changed, so we do a report
1696 * physical luns and report logical luns cmd, and adjust
1697 * our list of devices accordingly.
1698 *
1699 * The scsi3addr's of devices won't change so long as the
1700 * adapter is not reset. That means we can rescan and
1701 * tell which devices we already know about, vs. new
1702 * devices, vs. disappearing devices.
1703 */
1704 struct ReportLUNdata *physdev_list = NULL;
1705 struct ReportLUNdata *logdev_list = NULL;
1706 unsigned char *inq_buff = NULL;
01a02ffc
SC		 1707 u32 nphysicals = 0;
1708 u32 nlogicals = 0;
1709 u32 ndev_allocated = 0;
edd16368
SC		 1710 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
1711 int ncurrent = 0;
1712 int reportlunsize = sizeof(*physdev_list) + HPSA_MAX_PHYS_LUN * 8;
1713 int i, nmsa2xxx_enclosures, ndevs_to_allocate;
1714 int bus, target, lun;
339b2b14 1715 int raid_ctlr_position;
edd16368
SC		 1716 DECLARE_BITMAP(lunzerobits, HPSA_MAX_TARGETS_PER_CTLR);
1717
1718 currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_SCSI_DEVS_PER_HBA,
1719 GFP_KERNEL);
1720 physdev_list = kzalloc(reportlunsize, GFP_KERNEL);
1721 logdev_list = kzalloc(reportlunsize, GFP_KERNEL);
1722 inq_buff = kmalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
1723 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL);
1724
1725 if (!currentsd || !physdev_list || !logdev_list ||
1726 !inq_buff || !tmpdevice) {
1727 dev_err(&h->pdev->dev, "out of memory\n");
1728 goto out;
1729 }
1730 memset(lunzerobits, 0, sizeof(lunzerobits));
1731
1732 if (hpsa_gather_lun_info(h, reportlunsize, physdev_list, &nphysicals,
1733 logdev_list, &nlogicals))
1734 goto out;
1735
1736 /* We might see up to 32 MSA2xxx enclosures, actually 8 of them
1737 * but each of them 4 times through different paths. The plus 1
1738 * is for the RAID controller.
1739 */
1740 ndevs_to_allocate = nphysicals + nlogicals + MAX_MSA2XXX_ENCLOSURES + 1;
1741
1742 /* Allocate the per device structures */
1743 for (i = 0; i < ndevs_to_allocate; i++) {
1744 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL);
1745 if (!currentsd[i]) {
1746 dev_warn(&h->pdev->dev, "out of memory at %s:%d\n",
1747 __FILE__, __LINE__);
1748 goto out;
1749 }
1750 ndev_allocated++;
1751 }
1752
339b2b14
SC		 1753 if (unlikely(is_scsi_rev_5(h)))
1754 raid_ctlr_position = 0;
1755 else
1756 raid_ctlr_position = nphysicals + nlogicals;
1757
edd16368
SC		 1758 /* adjust our table of devices */
1759 nmsa2xxx_enclosures = 0;
1760 for (i = 0; i < nphysicals + nlogicals + 1; i++) {
01a02ffc 1761 u8 *lunaddrbytes;
edd16368
SC		 1762
1763 /* Figure out where the LUN ID info is coming from */
339b2b14
SC		 1764 lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position,
1765 i, nphysicals, nlogicals, physdev_list, logdev_list);
edd16368 1766 /* skip masked physical devices. */
339b2b14
SC		 1767 if (lunaddrbytes[3] & 0xC0 &&
1768 i < nphysicals + (raid_ctlr_position == 0))
edd16368
SC		 1769 continue;
1770
1771 /* Get device type, vendor, model, device id */
1772 if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice))
1773 continue; /* skip it if we can't talk to it. */
1774 figure_bus_target_lun(h, lunaddrbytes, &bus, &target, &lun,
1775 tmpdevice);
1776 this_device = currentsd[ncurrent];
1777
1778 /*
1779 * For the msa2xxx boxes, we have to insert a LUN 0 which
1780 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there
1781 * is nonetheless an enclosure device there. We have to
1782 * present that otherwise linux won't find anything if
1783 * there is no lun 0.
1784 */
1785 if (add_msa2xxx_enclosure_device(h, tmpdevice, this_device,
1786 lunaddrbytes, bus, target, lun, lunzerobits,
1787 &nmsa2xxx_enclosures)) {
1788 ncurrent++;
1789 this_device = currentsd[ncurrent];
1790 }
1791
1792 *this_device = *tmpdevice;
1793 hpsa_set_bus_target_lun(this_device, bus, target, lun);
1794
1795 switch (this_device->devtype) {
1796 case TYPE_ROM: {
1797 /* We don't *really* support actual CD-ROM devices,
1798 * just "One Button Disaster Recovery" tape drive
1799 * which temporarily pretends to be a CD-ROM drive.
1800 * So we check that the device is really an OBDR tape
1801 * device by checking for "$DR-10" in bytes 43-48 of
1802 * the inquiry data.
1803 */
1804 char obdr_sig[7];
1805#define OBDR_TAPE_SIG "$DR-10"
1806 strncpy(obdr_sig, &inq_buff[43], 6);
1807 obdr_sig[6] = '\0';
1808 if (strncmp(obdr_sig, OBDR_TAPE_SIG, 6) != 0)
1809 /* Not OBDR device, ignore it. */
1810 break;
1811 }
1812 ncurrent++;
1813 break;
1814 case TYPE_DISK:
1815 if (i < nphysicals)
1816 break;
1817 ncurrent++;
1818 break;
1819 case TYPE_TAPE:
1820 case TYPE_MEDIUM_CHANGER:
1821 ncurrent++;
1822 break;
1823 case TYPE_RAID:
1824 /* Only present the Smartarray HBA as a RAID controller.
1825 * If it's a RAID controller other than the HBA itself
1826 * (an external RAID controller, MSA500 or similar)
1827 * don't present it.
1828 */
1829 if (!is_hba_lunid(lunaddrbytes))
1830 break;
1831 ncurrent++;
1832 break;
1833 default:
1834 break;
1835 }
1836 if (ncurrent >= HPSA_MAX_SCSI_DEVS_PER_HBA)
1837 break;
1838 }
1839 adjust_hpsa_scsi_table(h, hostno, currentsd, ncurrent);
1840out:
1841 kfree(tmpdevice);
1842 for (i = 0; i < ndev_allocated; i++)
1843 kfree(currentsd[i]);
1844 kfree(currentsd);
1845 kfree(inq_buff);
1846 kfree(physdev_list);
1847 kfree(logdev_list);
edd16368
SC		 1848}
1849
1850/* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
1851 * dma mapping and fills in the scatter gather entries of the
1852 * hpsa command, cp.
1853 */
33a2ffce 1854static int hpsa_scatter_gather(struct ctlr_info *h,
edd16368
SC		 1855 struct CommandList *cp,
1856 struct scsi_cmnd *cmd)
1857{
1858 unsigned int len;
1859 struct scatterlist *sg;
01a02ffc 1860 u64 addr64;
33a2ffce
SC		 1861 int use_sg, i, sg_index, chained;
1862 struct SGDescriptor *curr_sg;
edd16368 1863
33a2ffce 1864 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
edd16368
SC		 1865
1866 use_sg = scsi_dma_map(cmd);
1867 if (use_sg < 0)
1868 return use_sg;
1869
1870 if (!use_sg)
1871 goto sglist_finished;
1872
33a2ffce
SC		 1873 curr_sg = cp->SG;
1874 chained = 0;
1875 sg_index = 0;
edd16368 1876 scsi_for_each_sg(cmd, sg, use_sg, i) {
33a2ffce
SC		 1877 if (i == h->max_cmd_sg_entries - 1 &&
1878 use_sg > h->max_cmd_sg_entries) {
1879 chained = 1;
1880 curr_sg = h->cmd_sg_list[cp->cmdindex];
1881 sg_index = 0;
1882 }
01a02ffc 1883 addr64 = (u64) sg_dma_address(sg);
edd16368 1884 len = sg_dma_len(sg);
33a2ffce
SC		 1885 curr_sg->Addr.lower = (u32) (addr64 & 0x0FFFFFFFFULL);
1886 curr_sg->Addr.upper = (u32) ((addr64 >> 32) & 0x0FFFFFFFFULL);
1887 curr_sg->Len = len;
1888 curr_sg->Ext = 0; /* we are not chaining */
1889 curr_sg++;
1890 }
1891
1892 if (use_sg + chained > h->maxSG)
1893 h->maxSG = use_sg + chained;
1894
1895 if (chained) {
1896 cp->Header.SGList = h->max_cmd_sg_entries;
1897 cp->Header.SGTotal = (u16) (use_sg + 1);
1898 hpsa_map_sg_chain_block(h, cp);
1899 return 0;
edd16368
SC		 1900 }
1901
1902sglist_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
1910static 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
33a2ffce 1995 if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */
edd16368
SC		 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
a08a8471
SC		 2004static void hpsa_scan_start(struct Scsi_Host *sh)
2005{
2006 struct ctlr_info *h = shost_to_hba(sh);
2007 unsigned long flags;
2008
2009 /* wait until any scan already in progress is finished. */
2010 while (1) {
2011 spin_lock_irqsave(&h->scan_lock, flags);
2012 if (h->scan_finished)
2013 break;
2014 spin_unlock_irqrestore(&h->scan_lock, flags);
2015 wait_event(h->scan_wait_queue, h->scan_finished);
2016 /* Note: We don't need to worry about a race between this
2017 * thread and driver unload because the midlayer will
2018 * have incremented the reference count, so unload won't
2019 * happen if we're in here.
2020 */
2021 }
2022 h->scan_finished = 0; /* mark scan as in progress */
2023 spin_unlock_irqrestore(&h->scan_lock, flags);
2024
2025 hpsa_update_scsi_devices(h, h->scsi_host->host_no);
2026
2027 spin_lock_irqsave(&h->scan_lock, flags);
2028 h->scan_finished = 1; /* mark scan as finished. */
2029 wake_up_all(&h->scan_wait_queue);
2030 spin_unlock_irqrestore(&h->scan_lock, flags);
2031}
2032
2033static int hpsa_scan_finished(struct Scsi_Host *sh,
2034 unsigned long elapsed_time)
2035{
2036 struct ctlr_info *h = shost_to_hba(sh);
2037 unsigned long flags;
2038 int finished;
2039
2040 spin_lock_irqsave(&h->scan_lock, flags);
2041 finished = h->scan_finished;
2042 spin_unlock_irqrestore(&h->scan_lock, flags);
2043 return finished;
2044}
2045
667e23d4
SC		 2046static int hpsa_change_queue_depth(struct scsi_device *sdev,
2047 int qdepth, int reason)
2048{
2049 struct ctlr_info *h = sdev_to_hba(sdev);
2050
2051 if (reason != SCSI_QDEPTH_DEFAULT)
2052 return -ENOTSUPP;
2053
2054 if (qdepth < 1)
2055 qdepth = 1;
2056 else
2057 if (qdepth > h->nr_cmds)
2058 qdepth = h->nr_cmds;
2059 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
2060 return sdev->queue_depth;
2061}
2062
edd16368
SC		 2063static void hpsa_unregister_scsi(struct ctlr_info *h)
2064{
2065 /* we are being forcibly unloaded, and may not refuse. */
2066 scsi_remove_host(h->scsi_host);
2067 scsi_host_put(h->scsi_host);
2068 h->scsi_host = NULL;
2069}
2070
2071static int hpsa_register_scsi(struct ctlr_info *h)
2072{
2073 int rc;
2074
edd16368
SC		 2075 rc = hpsa_scsi_detect(h);
2076 if (rc != 0)
2077 dev_err(&h->pdev->dev, "hpsa_register_scsi: failed"
2078 " hpsa_scsi_detect(), rc is %d\n", rc);
2079 return rc;
2080}
2081
2082static int wait_for_device_to_become_ready(struct ctlr_info *h,
2083 unsigned char lunaddr[])
2084{
2085 int rc = 0;
2086 int count = 0;
2087 int waittime = 1; /* seconds */
2088 struct CommandList *c;
2089
2090 c = cmd_special_alloc(h);
2091 if (!c) {
2092 dev_warn(&h->pdev->dev, "out of memory in "
2093 "wait_for_device_to_become_ready.\n");
2094 return IO_ERROR;
2095 }
2096
2097 /* Send test unit ready until device ready, or give up. */
2098 while (count < HPSA_TUR_RETRY_LIMIT) {
2099
2100 /* Wait for a bit. do this first, because if we send
2101 * the TUR right away, the reset will just abort it.
2102 */
2103 msleep(1000 * waittime);
2104 count++;
2105
2106 /* Increase wait time with each try, up to a point. */
2107 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS)
2108 waittime = waittime * 2;
2109
2110 /* Send the Test Unit Ready */
2111 fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, lunaddr, TYPE_CMD);
2112 hpsa_scsi_do_simple_cmd_core(h, c);
2113 /* no unmap needed here because no data xfer. */
2114
2115 if (c->err_info->CommandStatus == CMD_SUCCESS)
2116 break;
2117
2118 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
2119 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
2120 (c->err_info->SenseInfo[2] == NO_SENSE ||
2121 c->err_info->SenseInfo[2] == UNIT_ATTENTION))
2122 break;
2123
2124 dev_warn(&h->pdev->dev, "waiting %d secs "
2125 "for device to become ready.\n", waittime);
2126 rc = 1; /* device not ready. */
2127 }
2128
2129 if (rc)
2130 dev_warn(&h->pdev->dev, "giving up on device.\n");
2131 else
2132 dev_warn(&h->pdev->dev, "device is ready.\n");
2133
2134 cmd_special_free(h, c);
2135 return rc;
2136}
2137
2138/* Need at least one of these error handlers to keep ../scsi/hosts.c from
2139 * complaining. Doing a host- or bus-reset can't do anything good here.
2140 */
2141static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
2142{
2143 int rc;
2144 struct ctlr_info *h;
2145 struct hpsa_scsi_dev_t *dev;
2146
2147 /* find the controller to which the command to be aborted was sent */
2148 h = sdev_to_hba(scsicmd->device);
2149 if (h == NULL) /* paranoia */
2150 return FAILED;
edd16368
SC		 2151 dev = scsicmd->device->hostdata;
2152 if (!dev) {
2153 dev_err(&h->pdev->dev, "hpsa_eh_device_reset_handler: "
2154 "device lookup failed.\n");
2155 return FAILED;
2156 }
d416b0c7
SC		 2157 dev_warn(&h->pdev->dev, "resetting device %d:%d:%d:%d\n",
2158 h->scsi_host->host_no, dev->bus, dev->target, dev->lun);
edd16368
SC		 2159 /* send a reset to the SCSI LUN which the command was sent to */
2160 rc = hpsa_send_reset(h, dev->scsi3addr);
2161 if (rc == 0 && wait_for_device_to_become_ready(h, dev->scsi3addr) == 0)
2162 return SUCCESS;
2163
2164 dev_warn(&h->pdev->dev, "resetting device failed.\n");
2165 return FAILED;
2166}
2167
2168/*
2169 * For operations that cannot sleep, a command block is allocated at init,
2170 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
2171 * which ones are free or in use. Lock must be held when calling this.
2172 * cmd_free() is the complement.
2173 */
2174static struct CommandList *cmd_alloc(struct ctlr_info *h)
2175{
2176 struct CommandList *c;
2177 int i;
2178 union u64bit temp64;
2179 dma_addr_t cmd_dma_handle, err_dma_handle;
2180
2181 do {
2182 i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds);
2183 if (i == h->nr_cmds)
2184 return NULL;
2185 } while (test_and_set_bit
2186 (i & (BITS_PER_LONG - 1),
2187 h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0);
2188 c = h->cmd_pool + i;
2189 memset(c, 0, sizeof(*c));
2190 cmd_dma_handle = h->cmd_pool_dhandle
2191 + i * sizeof(*c);
2192 c->err_info = h->errinfo_pool + i;
2193 memset(c->err_info, 0, sizeof(*c->err_info));
2194 err_dma_handle = h->errinfo_pool_dhandle
2195 + i * sizeof(*c->err_info);
2196 h->nr_allocs++;
2197
2198 c->cmdindex = i;
2199
2200 INIT_HLIST_NODE(&c->list);
01a02ffc
SC		 2201 c->busaddr = (u32) cmd_dma_handle;
2202 temp64.val = (u64) err_dma_handle;
edd16368
SC		 2203 c->ErrDesc.Addr.lower = temp64.val32.lower;
2204 c->ErrDesc.Addr.upper = temp64.val32.upper;
2205 c->ErrDesc.Len = sizeof(*c->err_info);
2206
2207 c->h = h;
2208 return c;
2209}
2210
2211/* For operations that can wait for kmalloc to possibly sleep,
2212 * this routine can be called. Lock need not be held to call
2213 * cmd_special_alloc. cmd_special_free() is the complement.
2214 */
2215static struct CommandList *cmd_special_alloc(struct ctlr_info *h)
2216{
2217 struct CommandList *c;
2218 union u64bit temp64;
2219 dma_addr_t cmd_dma_handle, err_dma_handle;
2220
2221 c = pci_alloc_consistent(h->pdev, sizeof(*c), &cmd_dma_handle);
2222 if (c == NULL)
2223 return NULL;
2224 memset(c, 0, sizeof(*c));
2225
2226 c->cmdindex = -1;
2227
2228 c->err_info = pci_alloc_consistent(h->pdev, sizeof(*c->err_info),
2229 &err_dma_handle);
2230
2231 if (c->err_info == NULL) {
2232 pci_free_consistent(h->pdev,
2233 sizeof(*c), c, cmd_dma_handle);
2234 return NULL;
2235 }
2236 memset(c->err_info, 0, sizeof(*c->err_info));
2237
2238 INIT_HLIST_NODE(&c->list);
01a02ffc
SC		 2239 c->busaddr = (u32) cmd_dma_handle;
2240 temp64.val = (u64) err_dma_handle;
edd16368
SC		 2241 c->ErrDesc.Addr.lower = temp64.val32.lower;
2242 c->ErrDesc.Addr.upper = temp64.val32.upper;
2243 c->ErrDesc.Len = sizeof(*c->err_info);
2244
2245 c->h = h;
2246 return c;
2247}
2248
2249static void cmd_free(struct ctlr_info *h, struct CommandList *c)
2250{
2251 int i;
2252
2253 i = c - h->cmd_pool;
2254 clear_bit(i & (BITS_PER_LONG - 1),
2255 h->cmd_pool_bits + (i / BITS_PER_LONG));
2256 h->nr_frees++;
2257}
2258
2259static void cmd_special_free(struct ctlr_info *h, struct CommandList *c)
2260{
2261 union u64bit temp64;
2262
2263 temp64.val32.lower = c->ErrDesc.Addr.lower;
2264 temp64.val32.upper = c->ErrDesc.Addr.upper;
2265 pci_free_consistent(h->pdev, sizeof(*c->err_info),
2266 c->err_info, (dma_addr_t) temp64.val);
2267 pci_free_consistent(h->pdev, sizeof(*c),
2268 c, (dma_addr_t) c->busaddr);
2269}
2270
2271#ifdef CONFIG_COMPAT
2272
edd16368
SC		 2273static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, void *arg)
2274{
2275 IOCTL32_Command_struct __user *arg32 =
2276 (IOCTL32_Command_struct __user *) arg;
2277 IOCTL_Command_struct arg64;
2278 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
2279 int err;
2280 u32 cp;
2281
2282 err = 0;
2283 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
2284 sizeof(arg64.LUN_info));
2285 err |= copy_from_user(&arg64.Request, &arg32->Request,
2286 sizeof(arg64.Request));
2287 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
2288 sizeof(arg64.error_info));
2289 err |= get_user(arg64.buf_size, &arg32->buf_size);
2290 err |= get_user(cp, &arg32->buf);
2291 arg64.buf = compat_ptr(cp);
2292 err |= copy_to_user(p, &arg64, sizeof(arg64));
2293
2294 if (err)
2295 return -EFAULT;
2296
e39eeaed 2297 err = hpsa_ioctl(dev, CCISS_PASSTHRU, (void *)p);
edd16368
SC		 2298 if (err)
2299 return err;
2300 err |= copy_in_user(&arg32->error_info, &p->error_info,
2301 sizeof(arg32->error_info));
2302 if (err)
2303 return -EFAULT;
2304 return err;
2305}
2306
2307static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
2308 int cmd, void *arg)
2309{
2310 BIG_IOCTL32_Command_struct __user *arg32 =
2311 (BIG_IOCTL32_Command_struct __user *) arg;
2312 BIG_IOCTL_Command_struct arg64;
2313 BIG_IOCTL_Command_struct __user *p =
2314 compat_alloc_user_space(sizeof(arg64));
2315 int err;
2316 u32 cp;
2317
2318 err = 0;
2319 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
2320 sizeof(arg64.LUN_info));
2321 err |= copy_from_user(&arg64.Request, &arg32->Request,
2322 sizeof(arg64.Request));
2323 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
2324 sizeof(arg64.error_info));
2325 err |= get_user(arg64.buf_size, &arg32->buf_size);
2326 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
2327 err |= get_user(cp, &arg32->buf);
2328 arg64.buf = compat_ptr(cp);
2329 err |= copy_to_user(p, &arg64, sizeof(arg64));
2330
2331 if (err)
2332 return -EFAULT;
2333
e39eeaed 2334 err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, (void *)p);
edd16368
SC		 2335 if (err)
2336 return err;
2337 err |= copy_in_user(&arg32->error_info, &p->error_info,
2338 sizeof(arg32->error_info));
2339 if (err)
2340 return -EFAULT;
2341 return err;
2342}
71fe75a7
SC		 2343
2344static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg)
2345{
2346 switch (cmd) {
2347 case CCISS_GETPCIINFO:
2348 case CCISS_GETINTINFO:
2349 case CCISS_SETINTINFO:
2350 case CCISS_GETNODENAME:
2351 case CCISS_SETNODENAME:
2352 case CCISS_GETHEARTBEAT:
2353 case CCISS_GETBUSTYPES:
2354 case CCISS_GETFIRMVER:
2355 case CCISS_GETDRIVVER:
2356 case CCISS_REVALIDVOLS:
2357 case CCISS_DEREGDISK:
2358 case CCISS_REGNEWDISK:
2359 case CCISS_REGNEWD:
2360 case CCISS_RESCANDISK:
2361 case CCISS_GETLUNINFO:
2362 return hpsa_ioctl(dev, cmd, arg);
2363
2364 case CCISS_PASSTHRU32:
2365 return hpsa_ioctl32_passthru(dev, cmd, arg);
2366 case CCISS_BIG_PASSTHRU32:
2367 return hpsa_ioctl32_big_passthru(dev, cmd, arg);
2368
2369 default:
2370 return -ENOIOCTLCMD;
2371 }
2372}
edd16368
SC		 2373#endif
2374
2375static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp)
2376{
2377 struct hpsa_pci_info pciinfo;
2378
2379 if (!argp)
2380 return -EINVAL;
2381 pciinfo.domain = pci_domain_nr(h->pdev->bus);
2382 pciinfo.bus = h->pdev->bus->number;
2383 pciinfo.dev_fn = h->pdev->devfn;
2384 pciinfo.board_id = h->board_id;
2385 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo)))
2386 return -EFAULT;
2387 return 0;
2388}
2389
2390static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp)
2391{
2392 DriverVer_type DriverVer;
2393 unsigned char vmaj, vmin, vsubmin;
2394 int rc;
2395
2396 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu",
2397 &vmaj, &vmin, &vsubmin);
2398 if (rc != 3) {
2399 dev_info(&h->pdev->dev, "driver version string '%s' "
2400 "unrecognized.", HPSA_DRIVER_VERSION);
2401 vmaj = 0;
2402 vmin = 0;
2403 vsubmin = 0;
2404 }
2405 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin;
2406 if (!argp)
2407 return -EINVAL;
2408 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type)))
2409 return -EFAULT;
2410 return 0;
2411}
2412
2413static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
2414{
2415 IOCTL_Command_struct iocommand;
2416 struct CommandList *c;
2417 char *buff = NULL;
2418 union u64bit temp64;
2419
2420 if (!argp)
2421 return -EINVAL;
2422 if (!capable(CAP_SYS_RAWIO))
2423 return -EPERM;
2424 if (copy_from_user(&iocommand, argp, sizeof(iocommand)))
2425 return -EFAULT;
2426 if ((iocommand.buf_size < 1) &&
2427 (iocommand.Request.Type.Direction != XFER_NONE)) {
2428 return -EINVAL;
2429 }
2430 if (iocommand.buf_size > 0) {
2431 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
2432 if (buff == NULL)
2433 return -EFAULT;
2434 }
2435 if (iocommand.Request.Type.Direction == XFER_WRITE) {
2436 /* Copy the data into the buffer we created */
2437 if (copy_from_user(buff, iocommand.buf, iocommand.buf_size)) {
2438 kfree(buff);
2439 return -EFAULT;
2440 }
2441 } else
2442 memset(buff, 0, iocommand.buf_size);
2443 c = cmd_special_alloc(h);
2444 if (c == NULL) {
2445 kfree(buff);
2446 return -ENOMEM;
2447 }
2448 /* Fill in the command type */
2449 c->cmd_type = CMD_IOCTL_PEND;
2450 /* Fill in Command Header */
2451 c->Header.ReplyQueue = 0; /* unused in simple mode */
2452 if (iocommand.buf_size > 0) { /* buffer to fill */
2453 c->Header.SGList = 1;
2454 c->Header.SGTotal = 1;
2455 } else { /* no buffers to fill */
2456 c->Header.SGList = 0;
2457 c->Header.SGTotal = 0;
2458 }
2459 memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN));
2460 /* use the kernel address the cmd block for tag */
2461 c->Header.Tag.lower = c->busaddr;
2462
2463 /* Fill in Request block */
2464 memcpy(&c->Request, &iocommand.Request,
2465 sizeof(c->Request));
2466
2467 /* Fill in the scatter gather information */
2468 if (iocommand.buf_size > 0) {
2469 temp64.val = pci_map_single(h->pdev, buff,
2470 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
2471 c->SG[0].Addr.lower = temp64.val32.lower;
2472 c->SG[0].Addr.upper = temp64.val32.upper;
2473 c->SG[0].Len = iocommand.buf_size;
2474 c->SG[0].Ext = 0; /* we are not chaining*/
2475 }
2476 hpsa_scsi_do_simple_cmd_core(h, c);
2477 hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
2478 check_ioctl_unit_attention(h, c);
2479
2480 /* Copy the error information out */
2481 memcpy(&iocommand.error_info, c->err_info,
2482 sizeof(iocommand.error_info));
2483 if (copy_to_user(argp, &iocommand, sizeof(iocommand))) {
2484 kfree(buff);
2485 cmd_special_free(h, c);
2486 return -EFAULT;
2487 }
2488
2489 if (iocommand.Request.Type.Direction == XFER_READ) {
2490 /* Copy the data out of the buffer we created */
2491 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
2492 kfree(buff);
2493 cmd_special_free(h, c);
2494 return -EFAULT;
2495 }
2496 }
2497 kfree(buff);
2498 cmd_special_free(h, c);
2499 return 0;
2500}
2501
2502static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
2503{
2504 BIG_IOCTL_Command_struct *ioc;
2505 struct CommandList *c;
2506 unsigned char **buff = NULL;
2507 int *buff_size = NULL;
2508 union u64bit temp64;
2509 BYTE sg_used = 0;
2510 int status = 0;
2511 int i;
01a02ffc
SC		 2512 u32 left;
2513 u32 sz;
edd16368
SC		 2514 BYTE __user *data_ptr;
2515
2516 if (!argp)
2517 return -EINVAL;
2518 if (!capable(CAP_SYS_RAWIO))
2519 return -EPERM;
2520 ioc = (BIG_IOCTL_Command_struct *)
2521 kmalloc(sizeof(*ioc), GFP_KERNEL);
2522 if (!ioc) {
2523 status = -ENOMEM;
2524 goto cleanup1;
2525 }
2526 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
2527 status = -EFAULT;
2528 goto cleanup1;
2529 }
2530 if ((ioc->buf_size < 1) &&
2531 (ioc->Request.Type.Direction != XFER_NONE)) {
2532 status = -EINVAL;
2533 goto cleanup1;
2534 }
2535 /* Check kmalloc limits using all SGs */
2536 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
2537 status = -EINVAL;
2538 goto cleanup1;
2539 }
2540 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
2541 status = -EINVAL;
2542 goto cleanup1;
2543 }
2544 buff = kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL);
2545 if (!buff) {
2546 status = -ENOMEM;
2547 goto cleanup1;
2548 }
2549 buff_size = kmalloc(MAXSGENTRIES * sizeof(int), GFP_KERNEL);
2550 if (!buff_size) {
2551 status = -ENOMEM;
2552 goto cleanup1;
2553 }
2554 left = ioc->buf_size;
2555 data_ptr = ioc->buf;
2556 while (left) {
2557 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
2558 buff_size[sg_used] = sz;
2559 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
2560 if (buff[sg_used] == NULL) {
2561 status = -ENOMEM;
2562 goto cleanup1;
2563 }
2564 if (ioc->Request.Type.Direction == XFER_WRITE) {
2565 if (copy_from_user(buff[sg_used], data_ptr, sz)) {
2566 status = -ENOMEM;
2567 goto cleanup1;
2568 }
2569 } else
2570 memset(buff[sg_used], 0, sz);
2571 left -= sz;
2572 data_ptr += sz;
2573 sg_used++;
2574 }
2575 c = cmd_special_alloc(h);
2576 if (c == NULL) {
2577 status = -ENOMEM;
2578 goto cleanup1;
2579 }
2580 c->cmd_type = CMD_IOCTL_PEND;
2581 c->Header.ReplyQueue = 0;
2582
2583 if (ioc->buf_size > 0) {
2584 c->Header.SGList = sg_used;
2585 c->Header.SGTotal = sg_used;
2586 } else {
2587 c->Header.SGList = 0;
2588 c->Header.SGTotal = 0;
2589 }
2590 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN));
2591 c->Header.Tag.lower = c->busaddr;
2592 memcpy(&c->Request, &ioc->Request, sizeof(c->Request));
2593 if (ioc->buf_size > 0) {
2594 int i;
2595 for (i = 0; i < sg_used; i++) {
2596 temp64.val = pci_map_single(h->pdev, buff[i],
2597 buff_size[i], PCI_DMA_BIDIRECTIONAL);
2598 c->SG[i].Addr.lower = temp64.val32.lower;
2599 c->SG[i].Addr.upper = temp64.val32.upper;
2600 c->SG[i].Len = buff_size[i];
2601 /* we are not chaining */
2602 c->SG[i].Ext = 0;
2603 }
2604 }
2605 hpsa_scsi_do_simple_cmd_core(h, c);
2606 hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL);
2607 check_ioctl_unit_attention(h, c);
2608 /* Copy the error information out */
2609 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info));
2610 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
2611 cmd_special_free(h, c);
2612 status = -EFAULT;
2613 goto cleanup1;
2614 }
2615 if (ioc->Request.Type.Direction == XFER_READ) {
2616 /* Copy the data out of the buffer we created */
2617 BYTE __user *ptr = ioc->buf;
2618 for (i = 0; i < sg_used; i++) {
2619 if (copy_to_user(ptr, buff[i], buff_size[i])) {
2620 cmd_special_free(h, c);
2621 status = -EFAULT;
2622 goto cleanup1;
2623 }
2624 ptr += buff_size[i];
2625 }
2626 }
2627 cmd_special_free(h, c);
2628 status = 0;
2629cleanup1:
2630 if (buff) {
2631 for (i = 0; i < sg_used; i++)
2632 kfree(buff[i]);
2633 kfree(buff);
2634 }
2635 kfree(buff_size);
2636 kfree(ioc);
2637 return status;
2638}
2639
2640static void check_ioctl_unit_attention(struct ctlr_info *h,
2641 struct CommandList *c)
2642{
2643 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
2644 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
2645 (void) check_for_unit_attention(h, c);
2646}
2647/*
2648 * ioctl
2649 */
2650static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg)
2651{
2652 struct ctlr_info *h;
2653 void __user *argp = (void __user *)arg;
2654
2655 h = sdev_to_hba(dev);
2656
2657 switch (cmd) {
2658 case CCISS_DEREGDISK:
2659 case CCISS_REGNEWDISK:
2660 case CCISS_REGNEWD:
a08a8471 2661 hpsa_scan_start(h->scsi_host);
edd16368
SC		 2662 return 0;
2663 case CCISS_GETPCIINFO:
2664 return hpsa_getpciinfo_ioctl(h, argp);
2665 case CCISS_GETDRIVVER:
2666 return hpsa_getdrivver_ioctl(h, argp);
2667 case CCISS_PASSTHRU:
2668 return hpsa_passthru_ioctl(h, argp);
2669 case CCISS_BIG_PASSTHRU:
2670 return hpsa_big_passthru_ioctl(h, argp);
2671 default:
2672 return -ENOTTY;
2673 }
2674}
2675
01a02ffc
SC		 2676static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
2677 void *buff, size_t size, u8 page_code, unsigned char *scsi3addr,
edd16368
SC		 2678 int cmd_type)
2679{
2680 int pci_dir = XFER_NONE;
2681
2682 c->cmd_type = CMD_IOCTL_PEND;
2683 c->Header.ReplyQueue = 0;
2684 if (buff != NULL && size > 0) {
2685 c->Header.SGList = 1;
2686 c->Header.SGTotal = 1;
2687 } else {
2688 c->Header.SGList = 0;
2689 c->Header.SGTotal = 0;
2690 }
2691 c->Header.Tag.lower = c->busaddr;
2692 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
2693
2694 c->Request.Type.Type = cmd_type;
2695 if (cmd_type == TYPE_CMD) {
2696 switch (cmd) {
2697 case HPSA_INQUIRY:
2698 /* are we trying to read a vital product page */
2699 if (page_code != 0) {
2700 c->Request.CDB[1] = 0x01;
2701 c->Request.CDB[2] = page_code;
2702 }
2703 c->Request.CDBLen = 6;
2704 c->Request.Type.Attribute = ATTR_SIMPLE;
2705 c->Request.Type.Direction = XFER_READ;
2706 c->Request.Timeout = 0;
2707 c->Request.CDB[0] = HPSA_INQUIRY;
2708 c->Request.CDB[4] = size & 0xFF;
2709 break;
2710 case HPSA_REPORT_LOG:
2711 case HPSA_REPORT_PHYS:
2712 /* Talking to controller so It's a physical command
2713 mode = 00 target = 0. Nothing to write.
2714 */
2715 c->Request.CDBLen = 12;
2716 c->Request.Type.Attribute = ATTR_SIMPLE;
2717 c->Request.Type.Direction = XFER_READ;
2718 c->Request.Timeout = 0;
2719 c->Request.CDB[0] = cmd;
2720 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
2721 c->Request.CDB[7] = (size >> 16) & 0xFF;
2722 c->Request.CDB[8] = (size >> 8) & 0xFF;
2723 c->Request.CDB[9] = size & 0xFF;
2724 break;
edd16368
SC		 2725 case HPSA_CACHE_FLUSH:
2726 c->Request.CDBLen = 12;
2727 c->Request.Type.Attribute = ATTR_SIMPLE;
2728 c->Request.Type.Direction = XFER_WRITE;
2729 c->Request.Timeout = 0;
2730 c->Request.CDB[0] = BMIC_WRITE;
2731 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
2732 break;
2733 case TEST_UNIT_READY:
2734 c->Request.CDBLen = 6;
2735 c->Request.Type.Attribute = ATTR_SIMPLE;
2736 c->Request.Type.Direction = XFER_NONE;
2737 c->Request.Timeout = 0;
2738 break;
2739 default:
2740 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd);
2741 BUG();
2742 return;
2743 }
2744 } else if (cmd_type == TYPE_MSG) {
2745 switch (cmd) {
2746
2747 case HPSA_DEVICE_RESET_MSG:
2748 c->Request.CDBLen = 16;
2749 c->Request.Type.Type = 1; /* It is a MSG not a CMD */
2750 c->Request.Type.Attribute = ATTR_SIMPLE;
2751 c->Request.Type.Direction = XFER_NONE;
2752 c->Request.Timeout = 0; /* Don't time out */
2753 c->Request.CDB[0] = 0x01; /* RESET_MSG is 0x01 */
2754 c->Request.CDB[1] = 0x03; /* Reset target above */
2755 /* If bytes 4-7 are zero, it means reset the */
2756 /* LunID device */
2757 c->Request.CDB[4] = 0x00;
2758 c->Request.CDB[5] = 0x00;
2759 c->Request.CDB[6] = 0x00;
2760 c->Request.CDB[7] = 0x00;
2761 break;
2762
2763 default:
2764 dev_warn(&h->pdev->dev, "unknown message type %d\n",
2765 cmd);
2766 BUG();
2767 }
2768 } else {
2769 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type);
2770 BUG();
2771 }
2772
2773 switch (c->Request.Type.Direction) {
2774 case XFER_READ:
2775 pci_dir = PCI_DMA_FROMDEVICE;
2776 break;
2777 case XFER_WRITE:
2778 pci_dir = PCI_DMA_TODEVICE;
2779 break;
2780 case XFER_NONE:
2781 pci_dir = PCI_DMA_NONE;
2782 break;
2783 default:
2784 pci_dir = PCI_DMA_BIDIRECTIONAL;
2785 }
2786
2787 hpsa_map_one(h->pdev, c, buff, size, pci_dir);
2788
2789 return;
2790}
2791
2792/*
2793 * Map (physical) PCI mem into (virtual) kernel space
2794 */
2795static void __iomem *remap_pci_mem(ulong base, ulong size)
2796{
2797 ulong page_base = ((ulong) base) & PAGE_MASK;
2798 ulong page_offs = ((ulong) base) - page_base;
2799 void __iomem *page_remapped = ioremap(page_base, page_offs + size);
2800
2801 return page_remapped ? (page_remapped + page_offs) : NULL;
2802}
2803
2804/* Takes cmds off the submission queue and sends them to the hardware,
2805 * then puts them on the queue of cmds waiting for completion.
2806 */
2807static void start_io(struct ctlr_info *h)
2808{
2809 struct CommandList *c;
2810
2811 while (!hlist_empty(&h->reqQ)) {
2812 c = hlist_entry(h->reqQ.first, struct CommandList, list);
2813 /* can't do anything if fifo is full */
2814 if ((h->access.fifo_full(h))) {
2815 dev_warn(&h->pdev->dev, "fifo full\n");
2816 break;
2817 }
2818
2819 /* Get the first entry from the Request Q */
2820 removeQ(c);
2821 h->Qdepth--;
2822
2823 /* Tell the controller execute command */
2824 h->access.submit_command(h, c);
2825
2826 /* Put job onto the completed Q */
2827 addQ(&h->cmpQ, c);
2828 }
2829}
2830
2831static inline unsigned long get_next_completion(struct ctlr_info *h)
2832{
2833 return h->access.command_completed(h);
2834}
2835
900c5440 2836static inline bool interrupt_pending(struct ctlr_info *h)
edd16368
SC		 2837{
2838 return h->access.intr_pending(h);
2839}
2840
2841static inline long interrupt_not_for_us(struct ctlr_info *h)
2842{
303932fd
DB		 2843 return !(h->msi_vector || h->msix_vector) &&
2844 ((h->access.intr_pending(h) == 0) ||
2845 (h->interrupts_enabled == 0));
edd16368
SC		 2846}
2847
01a02ffc
SC		 2848static inline int bad_tag(struct ctlr_info *h, u32 tag_index,
2849 u32 raw_tag)
edd16368
SC		 2850{
2851 if (unlikely(tag_index >= h->nr_cmds)) {
2852 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag);
2853 return 1;
2854 }
2855 return 0;
2856}
2857
01a02ffc 2858static inline void finish_cmd(struct CommandList *c, u32 raw_tag)
edd16368
SC		 2859{
2860 removeQ(c);
2861 if (likely(c->cmd_type == CMD_SCSI))
2862 complete_scsi_command(c, 0, raw_tag);
2863 else if (c->cmd_type == CMD_IOCTL_PEND)
2864 complete(c->waiting);
2865}
2866
a104c99f
SC		 2867static inline u32 hpsa_tag_contains_index(u32 tag)
2868{
303932fd 2869#define DIRECT_LOOKUP_BIT 0x10
a104c99f
SC		 2870 return tag & DIRECT_LOOKUP_BIT;
2871}
2872
2873static inline u32 hpsa_tag_to_index(u32 tag)
2874{
303932fd 2875#define DIRECT_LOOKUP_SHIFT 5
a104c99f
SC		 2876 return tag >> DIRECT_LOOKUP_SHIFT;
2877}
2878
2879static inline u32 hpsa_tag_discard_error_bits(u32 tag)
2880{
2881#define HPSA_ERROR_BITS 0x03
2882 return tag & ~HPSA_ERROR_BITS;
2883}
2884
303932fd
DB		 2885/* process completion of an indexed ("direct lookup") command */
2886static inline u32 process_indexed_cmd(struct ctlr_info *h,
2887 u32 raw_tag)
2888{
2889 u32 tag_index;
2890 struct CommandList *c;
2891
2892 tag_index = hpsa_tag_to_index(raw_tag);
2893 if (bad_tag(h, tag_index, raw_tag))
2894 return next_command(h);
2895 c = h->cmd_pool + tag_index;
2896 finish_cmd(c, raw_tag);
2897 return next_command(h);
2898}
2899
2900/* process completion of a non-indexed command */
2901static inline u32 process_nonindexed_cmd(struct ctlr_info *h,
2902 u32 raw_tag)
2903{
2904 u32 tag;
2905 struct CommandList *c = NULL;
2906 struct hlist_node *tmp;
2907
2908 tag = hpsa_tag_discard_error_bits(raw_tag);
2909 hlist_for_each_entry(c, tmp, &h->cmpQ, list) {
2910 if ((c->busaddr & 0xFFFFFFE0) == (tag & 0xFFFFFFE0)) {
2911 finish_cmd(c, raw_tag);
2912 return next_command(h);
2913 }
2914 }
2915 bad_tag(h, h->nr_cmds + 1, raw_tag);
2916 return next_command(h);
2917}
2918
edd16368
SC		 2919static irqreturn_t do_hpsa_intr(int irq, void *dev_id)
2920{
2921 struct ctlr_info *h = dev_id;
edd16368 2922 unsigned long flags;
303932fd 2923 u32 raw_tag;
edd16368
SC		 2924
2925 if (interrupt_not_for_us(h))
2926 return IRQ_NONE;
2927 spin_lock_irqsave(&h->lock, flags);
303932fd
DB		 2928 raw_tag = get_next_completion(h);
2929 while (raw_tag != FIFO_EMPTY) {
2930 if (hpsa_tag_contains_index(raw_tag))
2931 raw_tag = process_indexed_cmd(h, raw_tag);
2932 else
2933 raw_tag = process_nonindexed_cmd(h, raw_tag);
edd16368
SC		 2934 }
2935 spin_unlock_irqrestore(&h->lock, flags);
2936 return IRQ_HANDLED;
2937}
2938
f0edafc6 2939/* Send a message CDB to the firmware. */
edd16368
SC		 2940static __devinit int hpsa_message(struct pci_dev *pdev, unsigned char opcode,
2941 unsigned char type)
2942{
2943 struct Command {
2944 struct CommandListHeader CommandHeader;
2945 struct RequestBlock Request;
2946 struct ErrDescriptor ErrorDescriptor;
2947 };
2948 struct Command *cmd;
2949 static const size_t cmd_sz = sizeof(*cmd) +
2950 sizeof(cmd->ErrorDescriptor);
2951 dma_addr_t paddr64;
2952 uint32_t paddr32, tag;
2953 void __iomem *vaddr;
2954 int i, err;
2955
2956 vaddr = pci_ioremap_bar(pdev, 0);
2957 if (vaddr == NULL)
2958 return -ENOMEM;
2959
2960 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
2961 * CCISS commands, so they must be allocated from the lower 4GiB of
2962 * memory.
2963 */
2964 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
2965 if (err) {
2966 iounmap(vaddr);
2967 return -ENOMEM;
2968 }
2969
2970 cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64);
2971 if (cmd == NULL) {
2972 iounmap(vaddr);
2973 return -ENOMEM;
2974 }
2975
2976 /* This must fit, because of the 32-bit consistent DMA mask. Also,
2977 * although there's no guarantee, we assume that the address is at
2978 * least 4-byte aligned (most likely, it's page-aligned).
2979 */
2980 paddr32 = paddr64;
2981
2982 cmd->CommandHeader.ReplyQueue = 0;
2983 cmd->CommandHeader.SGList = 0;
2984 cmd->CommandHeader.SGTotal = 0;
2985 cmd->CommandHeader.Tag.lower = paddr32;
2986 cmd->CommandHeader.Tag.upper = 0;
2987 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);
2988
2989 cmd->Request.CDBLen = 16;
2990 cmd->Request.Type.Type = TYPE_MSG;
2991 cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE;
2992 cmd->Request.Type.Direction = XFER_NONE;
2993 cmd->Request.Timeout = 0; /* Don't time out */
2994 cmd->Request.CDB[0] = opcode;
2995 cmd->Request.CDB[1] = type;
2996 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */
2997 cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(*cmd);
2998 cmd->ErrorDescriptor.Addr.upper = 0;
2999 cmd->ErrorDescriptor.Len = sizeof(struct ErrorInfo);
3000
3001 writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET);
3002
3003 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) {
3004 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
a104c99f 3005 if (hpsa_tag_discard_error_bits(tag) == paddr32)
edd16368
SC		 3006 break;
3007 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS);
3008 }
3009
3010 iounmap(vaddr);
3011
3012 /* we leak the DMA buffer here ... no choice since the controller could
3013 * still complete the command.
3014 */
3015 if (i == HPSA_MSG_SEND_RETRY_LIMIT) {
3016 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n",
3017 opcode, type);
3018 return -ETIMEDOUT;
3019 }
3020
3021 pci_free_consistent(pdev, cmd_sz, cmd, paddr64);
3022
3023 if (tag & HPSA_ERROR_BIT) {
3024 dev_err(&pdev->dev, "controller message %02x:%02x failed\n",
3025 opcode, type);
3026 return -EIO;
3027 }
3028
3029 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n",
3030 opcode, type);
3031 return 0;
3032}
3033
3034#define hpsa_soft_reset_controller(p) hpsa_message(p, 1, 0)
3035#define hpsa_noop(p) hpsa_message(p, 3, 0)
3036
3037static __devinit int hpsa_reset_msi(struct pci_dev *pdev)
3038{
3039/* the #defines are stolen from drivers/pci/msi.h. */
3040#define msi_control_reg(base) (base + PCI_MSI_FLAGS)
3041#define PCI_MSIX_FLAGS_ENABLE (1 << 15)
3042
3043 int pos;
3044 u16 control = 0;
3045
3046 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
3047 if (pos) {
3048 pci_read_config_word(pdev, msi_control_reg(pos), &control);
3049 if (control & PCI_MSI_FLAGS_ENABLE) {
3050 dev_info(&pdev->dev, "resetting MSI\n");
3051 pci_write_config_word(pdev, msi_control_reg(pos),
3052 control & ~PCI_MSI_FLAGS_ENABLE);
3053 }
3054 }
3055
3056 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
3057 if (pos) {
3058 pci_read_config_word(pdev, msi_control_reg(pos), &control);
3059 if (control & PCI_MSIX_FLAGS_ENABLE) {
3060 dev_info(&pdev->dev, "resetting MSI-X\n");
3061 pci_write_config_word(pdev, msi_control_reg(pos),
3062 control & ~PCI_MSIX_FLAGS_ENABLE);
3063 }
3064 }
3065
3066 return 0;
3067}
3068
3069/* This does a hard reset of the controller using PCI power management
3070 * states.
3071 */
3072static __devinit int hpsa_hard_reset_controller(struct pci_dev *pdev)
3073{
3074 u16 pmcsr, saved_config_space[32];
3075 int i, pos;
3076
3077 dev_info(&pdev->dev, "using PCI PM to reset controller\n");
3078
3079 /* This is very nearly the same thing as
3080 *
3081 * pci_save_state(pci_dev);
3082 * pci_set_power_state(pci_dev, PCI_D3hot);
3083 * pci_set_power_state(pci_dev, PCI_D0);
3084 * pci_restore_state(pci_dev);
3085 *
3086 * but we can't use these nice canned kernel routines on
3087 * kexec, because they also check the MSI/MSI-X state in PCI
3088 * configuration space and do the wrong thing when it is
3089 * set/cleared. Also, the pci_save/restore_state functions
3090 * violate the ordering requirements for restoring the
3091 * configuration space from the CCISS document (see the
3092 * comment below). So we roll our own ....
3093 */
3094
3095 for (i = 0; i < 32; i++)
3096 pci_read_config_word(pdev, 2*i, &saved_config_space[i]);
3097
3098 pos = pci_find_capability(pdev, PCI_CAP_ID_PM);
3099 if (pos == 0) {
3100 dev_err(&pdev->dev,
3101 "hpsa_reset_controller: PCI PM not supported\n");
3102 return -ENODEV;
3103 }
3104
3105 /* Quoting from the Open CISS Specification: "The Power
3106 * Management Control/Status Register (CSR) controls the power
3107 * state of the device. The normal operating state is D0,
3108 * CSR=00h. The software off state is D3, CSR=03h. To reset
3109 * the controller, place the interface device in D3 then to
3110 * D0, this causes a secondary PCI reset which will reset the
3111 * controller."
3112 */
3113
3114 /* enter the D3hot power management state */
3115 pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr);
3116 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
3117 pmcsr |= PCI_D3hot;
3118 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
3119
3120 msleep(500);
3121
3122 /* enter the D0 power management state */
3123 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
3124 pmcsr |= PCI_D0;
3125 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
3126
3127 msleep(500);
3128
3129 /* Restore the PCI configuration space. The Open CISS
3130 * Specification says, "Restore the PCI Configuration
3131 * Registers, offsets 00h through 60h. It is important to
3132 * restore the command register, 16-bits at offset 04h,
3133 * last. Do not restore the configuration status register,
3134 * 16-bits at offset 06h." Note that the offset is 2*i.
3135 */
3136 for (i = 0; i < 32; i++) {
3137 if (i == 2 || i == 3)
3138 continue;
3139 pci_write_config_word(pdev, 2*i, saved_config_space[i]);
3140 }
3141 wmb();
3142 pci_write_config_word(pdev, 4, saved_config_space[2]);
3143
3144 return 0;
3145}
3146
3147/*
3148 * We cannot read the structure directly, for portability we must use
3149 * the io functions.
3150 * This is for debug only.
3151 */
edd16368
SC		 3152static void print_cfg_table(struct device *dev, struct CfgTable *tb)
3153{
58f8665c 3154#ifdef HPSA_DEBUG
edd16368
SC		 3155 int i;
3156 char temp_name[17];
3157
3158 dev_info(dev, "Controller Configuration information\n");
3159 dev_info(dev, "------------------------------------\n");
3160 for (i = 0; i < 4; i++)
3161 temp_name[i] = readb(&(tb->Signature[i]));
3162 temp_name[4] = '\0';
3163 dev_info(dev, " Signature = %s\n", temp_name);
3164 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence)));
3165 dev_info(dev, " Transport methods supported = 0x%x\n",
3166 readl(&(tb->TransportSupport)));
3167 dev_info(dev, " Transport methods active = 0x%x\n",
3168 readl(&(tb->TransportActive)));
3169 dev_info(dev, " Requested transport Method = 0x%x\n",
3170 readl(&(tb->HostWrite.TransportRequest)));
3171 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n",
3172 readl(&(tb->HostWrite.CoalIntDelay)));
3173 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n",
3174 readl(&(tb->HostWrite.CoalIntCount)));
3175 dev_info(dev, " Max outstanding commands = 0x%d\n",
3176 readl(&(tb->CmdsOutMax)));
3177 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
3178 for (i = 0; i < 16; i++)
3179 temp_name[i] = readb(&(tb->ServerName[i]));
3180 temp_name[16] = '\0';
3181 dev_info(dev, " Server Name = %s\n", temp_name);
3182 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n",
3183 readl(&(tb->HeartBeat)));
edd16368 3184#endif /* HPSA_DEBUG */
58f8665c 3185}
edd16368
SC		 3186
3187static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
3188{
3189 int i, offset, mem_type, bar_type;
3190
3191 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
3192 return 0;
3193 offset = 0;
3194 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
3195 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
3196 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
3197 offset += 4;
3198 else {
3199 mem_type = pci_resource_flags(pdev, i) &
3200 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
3201 switch (mem_type) {
3202 case PCI_BASE_ADDRESS_MEM_TYPE_32:
3203 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
3204 offset += 4; /* 32 bit */
3205 break;
3206 case PCI_BASE_ADDRESS_MEM_TYPE_64:
3207 offset += 8;
3208 break;
3209 default: /* reserved in PCI 2.2 */
3210 dev_warn(&pdev->dev,
3211 "base address is invalid\n");
3212 return -1;
3213 break;
3214 }
3215 }
3216 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
3217 return i + 1;
3218 }
3219 return -1;
3220}
3221
3222/* If MSI/MSI-X is supported by the kernel we will try to enable it on
3223 * controllers that are capable. If not, we use IO-APIC mode.
3224 */
3225
6b3f4c52 3226static void __devinit hpsa_interrupt_mode(struct ctlr_info *h)
edd16368
SC		 3227{
3228#ifdef CONFIG_PCI_MSI
3229 int err;
3230 struct msix_entry hpsa_msix_entries[4] = { {0, 0}, {0, 1},
3231 {0, 2}, {0, 3}
3232 };
3233
3234 /* Some boards advertise MSI but don't really support it */
6b3f4c52
SC		 3235 if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) ||
3236 (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11))
edd16368 3237 goto default_int_mode;
55c06c71
SC		 3238 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) {
3239 dev_info(&h->pdev->dev, "MSIX\n");
3240 err = pci_enable_msix(h->pdev, hpsa_msix_entries, 4);
edd16368
SC		 3241 if (!err) {
3242 h->intr[0] = hpsa_msix_entries[0].vector;
3243 h->intr[1] = hpsa_msix_entries[1].vector;
3244 h->intr[2] = hpsa_msix_entries[2].vector;
3245 h->intr[3] = hpsa_msix_entries[3].vector;
3246 h->msix_vector = 1;
3247 return;
3248 }
3249 if (err > 0) {
55c06c71 3250 dev_warn(&h->pdev->dev, "only %d MSI-X vectors "
edd16368
SC		 3251 "available\n", err);
3252 goto default_int_mode;
3253 } else {
55c06c71 3254 dev_warn(&h->pdev->dev, "MSI-X init failed %d\n",
edd16368
SC		 3255 err);
3256 goto default_int_mode;
3257 }
3258 }
55c06c71
SC		 3259 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) {
3260 dev_info(&h->pdev->dev, "MSI\n");
3261 if (!pci_enable_msi(h->pdev))
edd16368
SC		 3262 h->msi_vector = 1;
3263 else
55c06c71 3264 dev_warn(&h->pdev->dev, "MSI init failed\n");
edd16368
SC		 3265 }
3266default_int_mode:
3267#endif /* CONFIG_PCI_MSI */
3268 /* if we get here we're going to use the default interrupt mode */
55c06c71 3269 h->intr[PERF_MODE_INT] = h->pdev->irq;
edd16368
SC		 3270}
3271
e5c880d1
SC		 3272static int __devinit hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
3273{
3274 int i;
3275 u32 subsystem_vendor_id, subsystem_device_id;
3276
3277 subsystem_vendor_id = pdev->subsystem_vendor;
3278 subsystem_device_id = pdev->subsystem_device;
3279 *board_id = ((subsystem_device_id << 16) & 0xffff0000) |
3280 subsystem_vendor_id;
3281
3282 for (i = 0; i < ARRAY_SIZE(products); i++)
3283 if (*board_id == products[i].board_id)
3284 return i;
3285
3286 if (subsystem_vendor_id != PCI_VENDOR_ID_HP || !hpsa_allow_any) {
3287 dev_warn(&pdev->dev, "unrecognized board ID: "
3288 "0x%08x, ignoring.\n", *board_id);
3289 return -ENODEV;
3290 }
3291 return ARRAY_SIZE(products) - 1; /* generic unknown smart array */
3292}
3293
85bdbabb
SC		 3294static inline bool hpsa_board_disabled(struct pci_dev *pdev)
3295{
3296 u16 command;
3297
3298 (void) pci_read_config_word(pdev, PCI_COMMAND, &command);
3299 return ((command & PCI_COMMAND_MEMORY) == 0);
3300}
3301
3a7774ce
SC		 3302static int __devinit hpsa_pci_find_memory_BAR(struct ctlr_info *h,
3303 unsigned long *memory_bar)
3304{
3305 int i;
3306
3307 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++)
3308 if (pci_resource_flags(h->pdev, i) & IORESOURCE_MEM) {
3309 /* addressing mode bits already removed */
3310 *memory_bar = pci_resource_start(h->pdev, i);
3311 dev_dbg(&h->pdev->dev, "memory BAR = %lx\n",
3312 *memory_bar);
3313 return 0;
3314 }
3315 dev_warn(&h->pdev->dev, "no memory BAR found\n");
3316 return -ENODEV;
3317}
3318
2c4c8c8b
SC		 3319static int __devinit hpsa_wait_for_board_ready(struct ctlr_info *h)
3320{
3321 int i;
3322 u32 scratchpad;
3323
3324 for (i = 0; i < HPSA_BOARD_READY_ITERATIONS; i++) {
3325 scratchpad = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
3326 if (scratchpad == HPSA_FIRMWARE_READY)
3327 return 0;
3328 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
3329 }
3330 dev_warn(&h->pdev->dev, "board not ready, timed out.\n");
3331 return -ENODEV;
3332}
3333
77c4495c 3334static int __devinit hpsa_find_cfgtables(struct ctlr_info *h)
edd16368 3335{
01a02ffc
SC		 3336 u64 cfg_offset;
3337 u32 cfg_base_addr;
3338 u64 cfg_base_addr_index;
303932fd 3339 u32 trans_offset;
77c4495c
SC		 3340
3341 /* get the address index number */
3342 cfg_base_addr = readl(h->vaddr + SA5_CTCFG_OFFSET);
3343 cfg_base_addr &= (u32) 0x0000ffff;
3344 cfg_base_addr_index = find_PCI_BAR_index(h->pdev, cfg_base_addr);
3345 if (cfg_base_addr_index == -1) {
3346 dev_warn(&h->pdev->dev, "cannot find cfg_base_addr_index\n");
3347 return -ENODEV;
3348 }
3349 cfg_offset = readl(h->vaddr + SA5_CTMEM_OFFSET);
3350 h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
3351 cfg_base_addr_index) + cfg_offset,
3352 sizeof(h->cfgtable));
3353 if (!h->cfgtable)
3354 return -ENOMEM;
3355 /* Find performant mode table. */
3356 trans_offset = readl(&(h->cfgtable->TransMethodOffset));
3357 h->transtable = remap_pci_mem(pci_resource_start(h->pdev,
3358 cfg_base_addr_index)+cfg_offset+trans_offset,
3359 sizeof(*h->transtable));
3360 if (!h->transtable)
3361 return -ENOMEM;
3362 return 0;
3363}
3364
b93d7536
SC		 3365/* Interrogate the hardware for some limits:
3366 * max commands, max SG elements without chaining, and with chaining,
3367 * SG chain block size, etc.
3368 */
3369static void __devinit hpsa_find_board_params(struct ctlr_info *h)
3370{
3371 h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands));
3372 h->nr_cmds = h->max_commands - 4; /* Allow room for some ioctls */
3373 h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements));
3374 /*
3375 * Limit in-command s/g elements to 32 save dma'able memory.
3376 * Howvever spec says if 0, use 31
3377 */
3378 h->max_cmd_sg_entries = 31;
3379 if (h->maxsgentries > 512) {
3380 h->max_cmd_sg_entries = 32;
3381 h->chainsize = h->maxsgentries - h->max_cmd_sg_entries + 1;
3382 h->maxsgentries--; /* save one for chain pointer */
3383 } else {
3384 h->maxsgentries = 31; /* default to traditional values */
3385 h->chainsize = 0;
3386 }
3387}
3388
76c46e49
SC		 3389static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)
3390{
3391 if ((readb(&h->cfgtable->Signature[0]) != 'C') ||
3392 (readb(&h->cfgtable->Signature[1]) != 'I') ||
3393 (readb(&h->cfgtable->Signature[2]) != 'S') ||
3394 (readb(&h->cfgtable->Signature[3]) != 'S')) {
3395 dev_warn(&h->pdev->dev, "not a valid CISS config table\n");
3396 return false;
3397 }
3398 return true;
3399}
3400
f7c39101
SC		 3401/* Need to enable prefetch in the SCSI core for 6400 in x86 */
3402static inline void hpsa_enable_scsi_prefetch(struct ctlr_info *h)
3403{
3404#ifdef CONFIG_X86
3405 u32 prefetch;
3406
3407 prefetch = readl(&(h->cfgtable->SCSI_Prefetch));
3408 prefetch |= 0x100;
3409 writel(prefetch, &(h->cfgtable->SCSI_Prefetch));
3410#endif
3411}
3412
3d0eab67
SC		 3413/* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
3414 * in a prefetch beyond physical memory.
3415 */
3416static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h)
3417{
3418 u32 dma_prefetch;
3419
3420 if (h->board_id != 0x3225103C)
3421 return;
3422 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
3423 dma_prefetch |= 0x8000;
3424 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
3425}
3426
3f4336f3 3427static void __devinit hpsa_wait_for_mode_change_ack(struct ctlr_info *h)
eb6b2ae9
SC		 3428{
3429 int i;
eb6b2ae9
SC		 3430
3431 /* under certain very rare conditions, this can take awhile.
3432 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3433 * as we enter this code.)
3434 */
3435 for (i = 0; i < MAX_CONFIG_WAIT; i++) {
3436 if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
3437 break;
3438 /* delay and try again */
3439 msleep(10);
3440 }
3f4336f3
SC		 3441}
3442
3443static int __devinit hpsa_enter_simple_mode(struct ctlr_info *h)
3444{
3445 u32 trans_support;
3446
3447 trans_support = readl(&(h->cfgtable->TransportSupport));
3448 if (!(trans_support & SIMPLE_MODE))
3449 return -ENOTSUPP;
3450
3451 h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
3452 /* Update the field, and then ring the doorbell */
3453 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
3454 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
3455 hpsa_wait_for_mode_change_ack(h);
eb6b2ae9 3456 print_cfg_table(&h->pdev->dev, h->cfgtable);
eb6b2ae9
SC		 3457 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) {
3458 dev_warn(&h->pdev->dev,
3459 "unable to get board into simple mode\n");
3460 return -ENODEV;
3461 }
3462 return 0;
3463}
3464
77c4495c
SC		 3465static int __devinit hpsa_pci_init(struct ctlr_info *h)
3466{
eb6b2ae9 3467 int prod_index, err;
edd16368 3468
e5c880d1
SC		 3469 prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id);
3470 if (prod_index < 0)
3471 return -ENODEV;
3472 h->product_name = products[prod_index].product_name;
3473 h->access = *(products[prod_index].access);
edd16368 3474
85bdbabb 3475 if (hpsa_board_disabled(h->pdev)) {
55c06c71 3476 dev_warn(&h->pdev->dev, "controller appears to be disabled\n");
edd16368
SC		 3477 return -ENODEV;
3478 }
55c06c71 3479 err = pci_enable_device(h->pdev);
edd16368 3480 if (err) {
55c06c71 3481 dev_warn(&h->pdev->dev, "unable to enable PCI device\n");
edd16368
SC		 3482 return err;
3483 }
3484
55c06c71 3485 err = pci_request_regions(h->pdev, "hpsa");
edd16368 3486 if (err) {
55c06c71
SC		 3487 dev_err(&h->pdev->dev,
3488 "cannot obtain PCI resources, aborting\n");
edd16368
SC		 3489 return err;
3490 }
6b3f4c52 3491 hpsa_interrupt_mode(h);
3a7774ce
SC		 3492 err = hpsa_pci_find_memory_BAR(h, &h->paddr);
3493 if (err)
edd16368 3494 goto err_out_free_res;
edd16368 3495 h->vaddr = remap_pci_mem(h->paddr, 0x250);
204892e9
SC		 3496 if (!h->vaddr) {
3497 err = -ENOMEM;
3498 goto err_out_free_res;
3499 }
2c4c8c8b
SC		 3500 err = hpsa_wait_for_board_ready(h);
3501 if (err)
edd16368 3502 goto err_out_free_res;
77c4495c
SC		 3503 err = hpsa_find_cfgtables(h);
3504 if (err)
edd16368 3505 goto err_out_free_res;
b93d7536 3506 hpsa_find_board_params(h);
edd16368 3507
76c46e49 3508 if (!hpsa_CISS_signature_present(h)) {
edd16368
SC		 3509 err = -ENODEV;
3510 goto err_out_free_res;
3511 }
f7c39101 3512 hpsa_enable_scsi_prefetch(h);
3d0eab67 3513 hpsa_p600_dma_prefetch_quirk(h);
eb6b2ae9
SC		 3514 err = hpsa_enter_simple_mode(h);
3515 if (err)
edd16368 3516 goto err_out_free_res;
edd16368
SC		 3517 return 0;
3518
3519err_out_free_res:
204892e9
SC		 3520 if (h->transtable)
3521 iounmap(h->transtable);
3522 if (h->cfgtable)
3523 iounmap(h->cfgtable);
3524 if (h->vaddr)
3525 iounmap(h->vaddr);
edd16368
SC		 3526 /*
3527 * Deliberately omit pci_disable_device(): it does something nasty to
3528 * Smart Array controllers that pci_enable_device does not undo
3529 */
55c06c71 3530 pci_release_regions(h->pdev);
edd16368
SC		 3531 return err;
3532}
3533
339b2b14
SC		 3534static void __devinit hpsa_hba_inquiry(struct ctlr_info *h)
3535{
3536 int rc;
3537
3538#define HBA_INQUIRY_BYTE_COUNT 64
3539 h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL);
3540 if (!h->hba_inquiry_data)
3541 return;
3542 rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0,
3543 h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT);
3544 if (rc != 0) {
3545 kfree(h->hba_inquiry_data);
3546 h->hba_inquiry_data = NULL;
3547 }
3548}
3549
edd16368
SC		 3550static int __devinit hpsa_init_one(struct pci_dev *pdev,
3551 const struct pci_device_id *ent)
3552{
ecd9aad4 3553 int i, rc;
edd16368
SC		 3554 int dac;
3555 struct ctlr_info *h;
3556
3557 if (number_of_controllers == 0)
3558 printk(KERN_INFO DRIVER_NAME "\n");
3559 if (reset_devices) {
3560 /* Reset the controller with a PCI power-cycle */
3561 if (hpsa_hard_reset_controller(pdev) || hpsa_reset_msi(pdev))
3562 return -ENODEV;
3563
3564 /* Some devices (notably the HP Smart Array 5i Controller)
3565 need a little pause here */
3566 msleep(HPSA_POST_RESET_PAUSE_MSECS);
3567
3568 /* Now try to get the controller to respond to a no-op */
3569 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) {
3570 if (hpsa_noop(pdev) == 0)
3571 break;
3572 else
3573 dev_warn(&pdev->dev, "no-op failed%s\n",
3574 (i < 11 ? "; re-trying" : ""));
3575 }
3576 }
3577
303932fd
DB		 3578 /* Command structures must be aligned on a 32-byte boundary because
3579 * the 5 lower bits of the address are used by the hardware. and by
3580 * the driver. See comments in hpsa.h for more info.
3581 */
3582#define COMMANDLIST_ALIGNMENT 32
3583 BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT);
edd16368
SC		 3584 h = kzalloc(sizeof(*h), GFP_KERNEL);
3585 if (!h)
ecd9aad4 3586 return -ENOMEM;
edd16368 3587
55c06c71 3588 h->pdev = pdev;
edd16368
SC		 3589 h->busy_initializing = 1;
3590 INIT_HLIST_HEAD(&h->cmpQ);
3591 INIT_HLIST_HEAD(&h->reqQ);
55c06c71 3592 rc = hpsa_pci_init(h);
ecd9aad4 3593 if (rc != 0)
edd16368
SC		 3594 goto clean1;
3595
3596 sprintf(h->devname, "hpsa%d", number_of_controllers);
3597 h->ctlr = number_of_controllers;
3598 number_of_controllers++;
edd16368
SC		 3599
3600 /* configure PCI DMA stuff */
ecd9aad4
SC		 3601 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
3602 if (rc == 0) {
edd16368 3603 dac = 1;
ecd9aad4
SC		 3604 } else {
3605 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3606 if (rc == 0) {
3607 dac = 0;
3608 } else {
3609 dev_err(&pdev->dev, "no suitable DMA available\n");
3610 goto clean1;
3611 }
edd16368
SC		 3612 }
3613
3614 /* make sure the board interrupts are off */
3615 h->access.set_intr_mask(h, HPSA_INTR_OFF);
303932fd
DB		 3616 rc = request_irq(h->intr[PERF_MODE_INT], do_hpsa_intr,
3617 IRQF_DISABLED, h->devname, h);
ecd9aad4 3618 if (rc) {
edd16368 3619 dev_err(&pdev->dev, "unable to get irq %d for %s\n",
303932fd 3620 h->intr[PERF_MODE_INT], h->devname);
edd16368
SC		 3621 goto clean2;
3622 }
3623
303932fd
DB		 3624 dev_info(&pdev->dev, "%s: <0x%x> at IRQ %d%s using DAC\n",
3625 h->devname, pdev->device,
3626 h->intr[PERF_MODE_INT], dac ? "" : " not");
edd16368
SC		 3627
3628 h->cmd_pool_bits =
3629 kmalloc(((h->nr_cmds + BITS_PER_LONG -
3630 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL);
3631 h->cmd_pool = pci_alloc_consistent(h->pdev,
3632 h->nr_cmds * sizeof(*h->cmd_pool),
3633 &(h->cmd_pool_dhandle));
3634 h->errinfo_pool = pci_alloc_consistent(h->pdev,
3635 h->nr_cmds * sizeof(*h->errinfo_pool),
3636 &(h->errinfo_pool_dhandle));
3637 if ((h->cmd_pool_bits == NULL)
3638 || (h->cmd_pool == NULL)
3639 || (h->errinfo_pool == NULL)) {
3640 dev_err(&pdev->dev, "out of memory");
ecd9aad4 3641 rc = -ENOMEM;
edd16368
SC		 3642 goto clean4;
3643 }
33a2ffce
SC		 3644 if (hpsa_allocate_sg_chain_blocks(h))
3645 goto clean4;
edd16368 3646 spin_lock_init(&h->lock);
a08a8471
SC		 3647 spin_lock_init(&h->scan_lock);
3648 init_waitqueue_head(&h->scan_wait_queue);
3649 h->scan_finished = 1; /* no scan currently in progress */
edd16368
SC		 3650
3651 pci_set_drvdata(pdev, h);
3652 memset(h->cmd_pool_bits, 0,
3653 ((h->nr_cmds + BITS_PER_LONG -
3654 1) / BITS_PER_LONG) * sizeof(unsigned long));
3655
3656 hpsa_scsi_setup(h);
3657
3658 /* Turn the interrupts on so we can service requests */
3659 h->access.set_intr_mask(h, HPSA_INTR_ON);
3660
303932fd 3661 hpsa_put_ctlr_into_performant_mode(h);
339b2b14 3662 hpsa_hba_inquiry(h);
edd16368
SC		 3663 hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */
3664 h->busy_initializing = 0;
3665 return 1;
3666
3667clean4:
33a2ffce 3668 hpsa_free_sg_chain_blocks(h);
edd16368
SC		 3669 kfree(h->cmd_pool_bits);
3670 if (h->cmd_pool)
3671 pci_free_consistent(h->pdev,
3672 h->nr_cmds * sizeof(struct CommandList),
3673 h->cmd_pool, h->cmd_pool_dhandle);
3674 if (h->errinfo_pool)
3675 pci_free_consistent(h->pdev,
3676 h->nr_cmds * sizeof(struct ErrorInfo),
3677 h->errinfo_pool,
3678 h->errinfo_pool_dhandle);
303932fd 3679 free_irq(h->intr[PERF_MODE_INT], h);
edd16368
SC		 3680clean2:
3681clean1:
3682 h->busy_initializing = 0;
3683 kfree(h);
ecd9aad4 3684 return rc;
edd16368
SC		 3685}
3686
3687static void hpsa_flush_cache(struct ctlr_info *h)
3688{
3689 char *flush_buf;
3690 struct CommandList *c;
3691
3692 flush_buf = kzalloc(4, GFP_KERNEL);
3693 if (!flush_buf)
3694 return;
3695
3696 c = cmd_special_alloc(h);
3697 if (!c) {
3698 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
3699 goto out_of_memory;
3700 }
3701 fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0,
3702 RAID_CTLR_LUNID, TYPE_CMD);
3703 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_TODEVICE);
3704 if (c->err_info->CommandStatus != 0)
3705 dev_warn(&h->pdev->dev,
3706 "error flushing cache on controller\n");
3707 cmd_special_free(h, c);
3708out_of_memory:
3709 kfree(flush_buf);
3710}
3711
3712static void hpsa_shutdown(struct pci_dev *pdev)
3713{
3714 struct ctlr_info *h;
3715
3716 h = pci_get_drvdata(pdev);
3717 /* Turn board interrupts off and send the flush cache command
3718 * sendcmd will turn off interrupt, and send the flush...
3719 * To write all data in the battery backed cache to disks
3720 */
3721 hpsa_flush_cache(h);
3722 h->access.set_intr_mask(h, HPSA_INTR_OFF);
303932fd 3723 free_irq(h->intr[PERF_MODE_INT], h);
edd16368
SC		 3724#ifdef CONFIG_PCI_MSI
3725 if (h->msix_vector)
3726 pci_disable_msix(h->pdev);
3727 else if (h->msi_vector)
3728 pci_disable_msi(h->pdev);
3729#endif /* CONFIG_PCI_MSI */
3730}
3731
3732static void __devexit hpsa_remove_one(struct pci_dev *pdev)
3733{
3734 struct ctlr_info *h;
3735
3736 if (pci_get_drvdata(pdev) == NULL) {
3737 dev_err(&pdev->dev, "unable to remove device \n");
3738 return;
3739 }
3740 h = pci_get_drvdata(pdev);
edd16368
SC		 3741 hpsa_unregister_scsi(h); /* unhook from SCSI subsystem */
3742 hpsa_shutdown(pdev);
3743 iounmap(h->vaddr);
204892e9
SC		 3744 iounmap(h->transtable);
3745 iounmap(h->cfgtable);
33a2ffce 3746 hpsa_free_sg_chain_blocks(h);
edd16368
SC		 3747 pci_free_consistent(h->pdev,
3748 h->nr_cmds * sizeof(struct CommandList),
3749 h->cmd_pool, h->cmd_pool_dhandle);
3750 pci_free_consistent(h->pdev,
3751 h->nr_cmds * sizeof(struct ErrorInfo),
3752 h->errinfo_pool, h->errinfo_pool_dhandle);
303932fd
DB		 3753 pci_free_consistent(h->pdev, h->reply_pool_size,
3754 h->reply_pool, h->reply_pool_dhandle);
edd16368 3755 kfree(h->cmd_pool_bits);
303932fd 3756 kfree(h->blockFetchTable);
339b2b14 3757 kfree(h->hba_inquiry_data);
edd16368
SC		 3758 /*
3759 * Deliberately omit pci_disable_device(): it does something nasty to
3760 * Smart Array controllers that pci_enable_device does not undo
3761 */
3762 pci_release_regions(pdev);
3763 pci_set_drvdata(pdev, NULL);
edd16368
SC		 3764 kfree(h);
3765}
3766
3767static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
3768 __attribute__((unused)) pm_message_t state)
3769{
3770 return -ENOSYS;
3771}
3772
3773static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
3774{
3775 return -ENOSYS;
3776}
3777
3778static struct pci_driver hpsa_pci_driver = {
3779 .name = "hpsa",
3780 .probe = hpsa_init_one,
3781 .remove = __devexit_p(hpsa_remove_one),
3782 .id_table = hpsa_pci_device_id, /* id_table */
3783 .shutdown = hpsa_shutdown,
3784 .suspend = hpsa_suspend,
3785 .resume = hpsa_resume,
3786};
3787
303932fd
DB		 3788/* Fill in bucket_map[], given nsgs (the max number of
3789 * scatter gather elements supported) and bucket[],
3790 * which is an array of 8 integers. The bucket[] array
3791 * contains 8 different DMA transfer sizes (in 16
3792 * byte increments) which the controller uses to fetch
3793 * commands. This function fills in bucket_map[], which
3794 * maps a given number of scatter gather elements to one of
3795 * the 8 DMA transfer sizes. The point of it is to allow the
3796 * controller to only do as much DMA as needed to fetch the
3797 * command, with the DMA transfer size encoded in the lower
3798 * bits of the command address.
3799 */
3800static void calc_bucket_map(int bucket[], int num_buckets,
3801 int nsgs, int *bucket_map)
3802{
3803 int i, j, b, size;
3804
3805 /* even a command with 0 SGs requires 4 blocks */
3806#define MINIMUM_TRANSFER_BLOCKS 4
3807#define NUM_BUCKETS 8
3808 /* Note, bucket_map must have nsgs+1 entries. */
3809 for (i = 0; i <= nsgs; i++) {
3810 /* Compute size of a command with i SG entries */
3811 size = i + MINIMUM_TRANSFER_BLOCKS;
3812 b = num_buckets; /* Assume the biggest bucket */
3813 /* Find the bucket that is just big enough */
3814 for (j = 0; j < 8; j++) {
3815 if (bucket[j] >= size) {
3816 b = j;
3817 break;
3818 }
3819 }
3820 /* for a command with i SG entries, use bucket b. */
3821 bucket_map[i] = b;
3822 }
3823}
3824
6c311b57 3825static __devinit void hpsa_enter_performant_mode(struct ctlr_info *h)
303932fd 3826{
6c311b57
SC		 3827 int i;
3828 unsigned long register_value;
3829 int bft[8] = {5, 6, 8, 10, 12, 20, 28, 35}; /* for scatter/gathers */
303932fd
DB		 3830 /* 5 = 1 s/g entry or 4k
3831 * 6 = 2 s/g entry or 8k
3832 * 8 = 4 s/g entry or 16k
3833 * 10 = 6 s/g entry or 24k
3834 */
303932fd
DB		 3835
3836 h->reply_pool_wraparound = 1; /* spec: init to 1 */
3837
3838 /* Controller spec: zero out this buffer. */
3839 memset(h->reply_pool, 0, h->reply_pool_size);
3840 h->reply_pool_head = h->reply_pool;
3841
303932fd
DB		 3842 bft[7] = h->max_sg_entries + 4;
3843 calc_bucket_map(bft, ARRAY_SIZE(bft), 32, h->blockFetchTable);
3844 for (i = 0; i < 8; i++)
3845 writel(bft[i], &h->transtable->BlockFetch[i]);
3846
3847 /* size of controller ring buffer */
3848 writel(h->max_commands, &h->transtable->RepQSize);
3849 writel(1, &h->transtable->RepQCount);
3850 writel(0, &h->transtable->RepQCtrAddrLow32);
3851 writel(0, &h->transtable->RepQCtrAddrHigh32);
3852 writel(h->reply_pool_dhandle, &h->transtable->RepQAddr0Low32);
3853 writel(0, &h->transtable->RepQAddr0High32);
3854 writel(CFGTBL_Trans_Performant,
3855 &(h->cfgtable->HostWrite.TransportRequest));
3856 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
3f4336f3 3857 hpsa_wait_for_mode_change_ack(h);
303932fd
DB		 3858 register_value = readl(&(h->cfgtable->TransportActive));
3859 if (!(register_value & CFGTBL_Trans_Performant)) {
3860 dev_warn(&h->pdev->dev, "unable to get board into"
3861 " performant mode\n");
3862 return;
3863 }
6c311b57
SC		 3864}
3865
3866static __devinit void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
3867{
3868 u32 trans_support;
3869
3870 trans_support = readl(&(h->cfgtable->TransportSupport));
3871 if (!(trans_support & PERFORMANT_MODE))
3872 return;
3873
3874 h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands));
3875 h->max_sg_entries = 32;
3876 /* Performant mode ring buffer and supporting data structures */
3877 h->reply_pool_size = h->max_commands * sizeof(u64);
3878 h->reply_pool = pci_alloc_consistent(h->pdev, h->reply_pool_size,
3879 &(h->reply_pool_dhandle));
3880
3881 /* Need a block fetch table for performant mode */
3882 h->blockFetchTable = kmalloc(((h->max_sg_entries+1) *
3883 sizeof(u32)), GFP_KERNEL);
3884
3885 if ((h->reply_pool == NULL)
3886 || (h->blockFetchTable == NULL))
3887 goto clean_up;
3888
3889 hpsa_enter_performant_mode(h);
303932fd
DB		 3890
3891 /* Change the access methods to the performant access methods */
3892 h->access = SA5_performant_access;
3893 h->transMethod = CFGTBL_Trans_Performant;
3894
3895 return;
3896
3897clean_up:
3898 if (h->reply_pool)
3899 pci_free_consistent(h->pdev, h->reply_pool_size,
3900 h->reply_pool, h->reply_pool_dhandle);
3901 kfree(h->blockFetchTable);
3902}
3903
edd16368
SC		 3904/*
3905 * This is it. Register the PCI driver information for the cards we control
3906 * the OS will call our registered routines when it finds one of our cards.
3907 */
3908static int __init hpsa_init(void)
3909{
31468401 3910 return pci_register_driver(&hpsa_pci_driver);
edd16368
SC		 3911}
3912
3913static void __exit hpsa_cleanup(void)
3914{
3915 pci_unregister_driver(&hpsa_pci_driver);
edd16368
SC		 3916}
3917
3918module_init(hpsa_init);
3919module_exit(hpsa_cleanup);
Linux kernel - Deliverables
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