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authorStephen M. Cameron <scameron@beardog.cce.hp.com>2009-12-08 17:09:11 -0500
committerJames Bottomley <James.Bottomley@suse.de>2009-12-10 10:55:00 -0500
commitedd163687ea59f01d6b43c9e1fdaa0126fa30191 (patch)
tree419b8b983cbc7c72ffa3917ce8b706caa63084a1 /drivers
parent0109abffbf91b76e2a34e324a407d780a55fc1ab (diff)
[SCSI] hpsa: add driver for HP Smart Array controllers.
This driver supports a subset of HP Smart Array Controllers. It is a SCSI alternative to the cciss driver. [akpm@linux-foundation.org: avoid helpful cleanup patches] [achiang@hp.com: make device attrs static] [akpm@linux-foundation.org: msleep() does set_current_state() itself] Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Mike Miller <mikem@beardog.cce.hp.com> Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/scsi/Kconfig10
-rw-r--r--drivers/scsi/Makefile1
-rw-r--r--drivers/scsi/hpsa.c3531
-rw-r--r--drivers/scsi/hpsa.h273
-rw-r--r--drivers/scsi/hpsa_cmd.h326
5 files changed, 4141 insertions, 0 deletions
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 36900c71a592..9191d1ea6451 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -388,6 +388,16 @@ config BLK_DEV_3W_XXXX_RAID
388 Please read the comments at the top of 388 Please read the comments at the top of
389 <file:drivers/scsi/3w-xxxx.c>. 389 <file:drivers/scsi/3w-xxxx.c>.
390 390
391config SCSI_HPSA
392 tristate "HP Smart Array SCSI driver"
393 depends on PCI && SCSI
394 help
395 This driver supports HP Smart Array Controllers (circa 2009).
396 It is a SCSI alternative to the cciss driver, which is a block
397 driver. Anyone wishing to use HP Smart Array controllers who
398 would prefer the devices be presented to linux as SCSI devices,
399 rather than as generic block devices should say Y here.
400
391config SCSI_3W_9XXX 401config SCSI_3W_9XXX
392 tristate "3ware 9xxx SATA-RAID support" 402 tristate "3ware 9xxx SATA-RAID support"
393 depends on PCI && SCSI 403 depends on PCI && SCSI
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 280d3c657d60..92a8c500b23d 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -91,6 +91,7 @@ obj-$(CONFIG_SCSI_BFA_FC) += bfa/
91obj-$(CONFIG_SCSI_PAS16) += pas16.o 91obj-$(CONFIG_SCSI_PAS16) += pas16.o
92obj-$(CONFIG_SCSI_T128) += t128.o 92obj-$(CONFIG_SCSI_T128) += t128.o
93obj-$(CONFIG_SCSI_DMX3191D) += dmx3191d.o 93obj-$(CONFIG_SCSI_DMX3191D) += dmx3191d.o
94obj-$(CONFIG_SCSI_HPSA) += hpsa.o
94obj-$(CONFIG_SCSI_DTC3280) += dtc.o 95obj-$(CONFIG_SCSI_DTC3280) += dtc.o
95obj-$(CONFIG_SCSI_SYM53C8XX_2) += sym53c8xx_2/ 96obj-$(CONFIG_SCSI_SYM53C8XX_2) += sym53c8xx_2/
96obj-$(CONFIG_SCSI_ZALON) += zalon7xx.o 97obj-$(CONFIG_SCSI_ZALON) += zalon7xx.o
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
new file mode 100644
index 000000000000..bb96fdd58e23
--- /dev/null
+++ b/drivers/scsi/hpsa.c
@@ -0,0 +1,3531 @@
1/*
2 * Disk Array driver for HP Smart Array SAS controllers
3 * Copyright 2000, 2009 Hewlett-Packard Development Company, L.P.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
12 * NON INFRINGEMENT. See the GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 *
18 * Questions/Comments/Bugfixes to iss_storagedev@hp.com
19 *
20 */
21
22#include <linux/module.h>
23#include <linux/interrupt.h>
24#include <linux/types.h>
25#include <linux/pci.h>
26#include <linux/kernel.h>
27#include <linux/slab.h>
28#include <linux/delay.h>
29#include <linux/fs.h>
30#include <linux/timer.h>
31#include <linux/seq_file.h>
32#include <linux/init.h>
33#include <linux/spinlock.h>
34#include <linux/smp_lock.h>
35#include <linux/compat.h>
36#include <linux/blktrace_api.h>
37#include <linux/uaccess.h>
38#include <linux/io.h>
39#include <linux/dma-mapping.h>
40#include <linux/completion.h>
41#include <linux/moduleparam.h>
42#include <scsi/scsi.h>
43#include <scsi/scsi_cmnd.h>
44#include <scsi/scsi_device.h>
45#include <scsi/scsi_host.h>
46#include <linux/cciss_ioctl.h>
47#include <linux/string.h>
48#include <linux/bitmap.h>
49#include <asm/atomic.h>
50#include <linux/kthread.h>
51#include "hpsa_cmd.h"
52#include "hpsa.h"
53
54/* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */
55#define HPSA_DRIVER_VERSION "1.0.0"
56#define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
57
58/* How long to wait (in milliseconds) for board to go into simple mode */
59#define MAX_CONFIG_WAIT 30000
60#define MAX_IOCTL_CONFIG_WAIT 1000
61
62/*define how many times we will try a command because of bus resets */
63#define MAX_CMD_RETRIES 3
64
65/* Embedded module documentation macros - see modules.h */
66MODULE_AUTHOR("Hewlett-Packard Company");
67MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
68 HPSA_DRIVER_VERSION);
69MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
70MODULE_VERSION(HPSA_DRIVER_VERSION);
71MODULE_LICENSE("GPL");
72
73static int hpsa_allow_any;
74module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR);
75MODULE_PARM_DESC(hpsa_allow_any,
76 "Allow hpsa driver to access unknown HP Smart Array hardware");
77
78/* define the PCI info for the cards we can control */
79static const struct pci_device_id hpsa_pci_device_id[] = {
80 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223},
81 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234},
82 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D},
83 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241},
84 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243},
85 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245},
86 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247},
87 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249},
88 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324a},
89 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324b},
90 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
91 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
92 {0,}
93};
94
95MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id);
96
97/* board_id = Subsystem Device ID & Vendor ID
98 * product = Marketing Name for the board
99 * access = Address of the struct of function pointers
100 */
101static struct board_type products[] = {
102 {0x3223103C, "Smart Array P800", &SA5_access},
103 {0x3234103C, "Smart Array P400", &SA5_access},
104 {0x323d103c, "Smart Array P700M", &SA5_access},
105 {0x3241103C, "Smart Array P212", &SA5_access},
106 {0x3243103C, "Smart Array P410", &SA5_access},
107 {0x3245103C, "Smart Array P410i", &SA5_access},
108 {0x3247103C, "Smart Array P411", &SA5_access},
109 {0x3249103C, "Smart Array P812", &SA5_access},
110 {0x324a103C, "Smart Array P712m", &SA5_access},
111 {0x324b103C, "Smart Array P711m", &SA5_access},
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);
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,
131 int cmd_type);
132
133static int hpsa_scsi_queue_command(struct scsi_cmnd *cmd,
134 void (*done)(struct scsi_cmnd *));
135
136static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd);
137static int hpsa_slave_alloc(struct scsi_device *sdev);
138static void hpsa_slave_destroy(struct scsi_device *sdev);
139
140static ssize_t raid_level_show(struct device *dev,
141 struct device_attribute *attr, char *buf);
142static ssize_t lunid_show(struct device *dev,
143 struct device_attribute *attr, char *buf);
144static ssize_t unique_id_show(struct device *dev,
145 struct device_attribute *attr, char *buf);
146static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno);
147static ssize_t host_store_rescan(struct device *dev,
148 struct device_attribute *attr, const char *buf, size_t count);
149static int check_for_unit_attention(struct ctlr_info *h,
150 struct CommandList *c);
151static void check_ioctl_unit_attention(struct ctlr_info *h,
152 struct CommandList *c);
153
154static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
155static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
156static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
157static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
158
159static struct device_attribute *hpsa_sdev_attrs[] = {
160 &dev_attr_raid_level,
161 &dev_attr_lunid,
162 &dev_attr_unique_id,
163 NULL,
164};
165
166static struct device_attribute *hpsa_shost_attrs[] = {
167 &dev_attr_rescan,
168 NULL,
169};
170
171static struct scsi_host_template hpsa_driver_template = {
172 .module = THIS_MODULE,
173 .name = "hpsa",
174 .proc_name = "hpsa",
175 .queuecommand = hpsa_scsi_queue_command,
176 .can_queue = 512,
177 .this_id = -1,
178 .sg_tablesize = MAXSGENTRIES,
179 .cmd_per_lun = 512,
180 .use_clustering = ENABLE_CLUSTERING,
181 .eh_device_reset_handler = hpsa_eh_device_reset_handler,
182 .ioctl = hpsa_ioctl,
183 .slave_alloc = hpsa_slave_alloc,
184 .slave_destroy = hpsa_slave_destroy,
185#ifdef CONFIG_COMPAT
186 .compat_ioctl = hpsa_compat_ioctl,
187#endif
188 .sdev_attrs = hpsa_sdev_attrs,
189 .shost_attrs = hpsa_shost_attrs,
190};
191
192static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
193{
194 unsigned long *priv = shost_priv(sdev->host);
195 return (struct ctlr_info *) *priv;
196}
197
198static struct task_struct *hpsa_scan_thread;
199static DEFINE_MUTEX(hpsa_scan_mutex);
200static LIST_HEAD(hpsa_scan_q);
201static int hpsa_scan_func(void *data);
202
203/**
204 * add_to_scan_list() - add controller to rescan queue
205 * @h: Pointer to the controller.
206 *
207 * Adds the controller to the rescan queue if not already on the queue.
208 *
209 * returns 1 if added to the queue, 0 if skipped (could be on the
210 * queue already, or the controller could be initializing or shutting
211 * down).
212 **/
213static int add_to_scan_list(struct ctlr_info *h)
214{
215 struct ctlr_info *test_h;
216 int found = 0;
217 int ret = 0;
218
219 if (h->busy_initializing)
220 return 0;
221
222 /*
223 * If we don't get the lock, it means the driver is unloading
224 * and there's no point in scheduling a new scan.
225 */
226 if (!mutex_trylock(&h->busy_shutting_down))
227 return 0;
228
229 mutex_lock(&hpsa_scan_mutex);
230 list_for_each_entry(test_h, &hpsa_scan_q, scan_list) {
231 if (test_h == h) {
232 found = 1;
233 break;
234 }
235 }
236 if (!found && !h->busy_scanning) {
237 INIT_COMPLETION(h->scan_wait);
238 list_add_tail(&h->scan_list, &hpsa_scan_q);
239 ret = 1;
240 }
241 mutex_unlock(&hpsa_scan_mutex);
242 mutex_unlock(&h->busy_shutting_down);
243
244 return ret;
245}
246
247/**
248 * remove_from_scan_list() - remove controller from rescan queue
249 * @h: Pointer to the controller.
250 *
251 * Removes the controller from the rescan queue if present. Blocks if
252 * the controller is currently conducting a rescan. The controller
253 * can be in one of three states:
254 * 1. Doesn't need a scan
255 * 2. On the scan list, but not scanning yet (we remove it)
256 * 3. Busy scanning (and not on the list). In this case we want to wait for
257 * the scan to complete to make sure the scanning thread for this
258 * controller is completely idle.
259 **/
260static void remove_from_scan_list(struct ctlr_info *h)
261{
262 struct ctlr_info *test_h, *tmp_h;
263
264 mutex_lock(&hpsa_scan_mutex);
265 list_for_each_entry_safe(test_h, tmp_h, &hpsa_scan_q, scan_list) {
266 if (test_h == h) { /* state 2. */
267 list_del(&h->scan_list);
268 complete_all(&h->scan_wait);
269 mutex_unlock(&hpsa_scan_mutex);
270 return;
271 }
272 }
273 if (h->busy_scanning) { /* state 3. */
274 mutex_unlock(&hpsa_scan_mutex);
275 wait_for_completion(&h->scan_wait);
276 } else { /* state 1, nothing to do. */
277 mutex_unlock(&hpsa_scan_mutex);
278 }
279}
280
281/* hpsa_scan_func() - kernel thread used to rescan controllers
282 * @data: Ignored.
283 *
284 * A kernel thread used scan for drive topology changes on
285 * controllers. The thread processes only one controller at a time
286 * using a queue. Controllers are added to the queue using
287 * add_to_scan_list() and removed from the queue either after done
288 * processing or using remove_from_scan_list().
289 *
290 * returns 0.
291 **/
292static int hpsa_scan_func(__attribute__((unused)) void *data)
293{
294 struct ctlr_info *h;
295 int host_no;
296
297 while (1) {
298 set_current_state(TASK_INTERRUPTIBLE);
299 schedule();
300 if (kthread_should_stop())
301 break;
302
303 while (1) {
304 mutex_lock(&hpsa_scan_mutex);
305 if (list_empty(&hpsa_scan_q)) {
306 mutex_unlock(&hpsa_scan_mutex);
307 break;
308 }
309 h = list_entry(hpsa_scan_q.next, struct ctlr_info,
310 scan_list);
311 list_del(&h->scan_list);
312 h->busy_scanning = 1;
313 mutex_unlock(&hpsa_scan_mutex);
314 host_no = h->scsi_host ? h->scsi_host->host_no : -1;
315 hpsa_update_scsi_devices(h, host_no);
316 complete_all(&h->scan_wait);
317 mutex_lock(&hpsa_scan_mutex);
318 h->busy_scanning = 0;
319 mutex_unlock(&hpsa_scan_mutex);
320 }
321 }
322 return 0;
323}
324
325static int check_for_unit_attention(struct ctlr_info *h,
326 struct CommandList *c)
327{
328 if (c->err_info->SenseInfo[2] != UNIT_ATTENTION)
329 return 0;
330
331 switch (c->err_info->SenseInfo[12]) {
332 case STATE_CHANGED:
333 dev_warn(&h->pdev->dev, "hpsa%d: a state change "
334 "detected, command retried\n", h->ctlr);
335 break;
336 case LUN_FAILED:
337 dev_warn(&h->pdev->dev, "hpsa%d: LUN failure "
338 "detected, action required\n", h->ctlr);
339 break;
340 case REPORT_LUNS_CHANGED:
341 dev_warn(&h->pdev->dev, "hpsa%d: report LUN data "
342 "changed\n", h->ctlr);
343 /*
344 * Here, we could call add_to_scan_list and wake up the scan thread,
345 * except that it's quite likely that we will get more than one
346 * REPORT_LUNS_CHANGED condition in quick succession, which means
347 * that those which occur after the first one will likely happen
348 * *during* the hpsa_scan_thread's rescan. And the rescan code is not
349 * robust enough to restart in the middle, undoing what it has already
350 * done, and it's not clear that it's even possible to do this, since
351 * part of what it does is notify the SCSI mid layer, which starts
352 * doing it's own i/o to read partition tables and so on, and the
353 * driver doesn't have visibility to know what might need undoing.
354 * In any event, if possible, it is horribly complicated to get right
355 * so we just don't do it for now.
356 *
357 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
358 */
359 break;
360 case POWER_OR_RESET:
361 dev_warn(&h->pdev->dev, "hpsa%d: a power on "
362 "or device reset detected\n", h->ctlr);
363 break;
364 case UNIT_ATTENTION_CLEARED:
365 dev_warn(&h->pdev->dev, "hpsa%d: unit attention "
366 "cleared by another initiator\n", h->ctlr);
367 break;
368 default:
369 dev_warn(&h->pdev->dev, "hpsa%d: unknown "
370 "unit attention detected\n", h->ctlr);
371 break;
372 }
373 return 1;
374}
375
376static ssize_t host_store_rescan(struct device *dev,
377 struct device_attribute *attr,
378 const char *buf, size_t count)
379{
380 struct ctlr_info *h;
381 struct Scsi_Host *shost = class_to_shost(dev);
382 unsigned long *priv = shost_priv(shost);
383 h = (struct ctlr_info *) *priv;
384 if (add_to_scan_list(h)) {
385 wake_up_process(hpsa_scan_thread);
386 wait_for_completion_interruptible(&h->scan_wait);
387 }
388 return count;
389}
390
391/* Enqueuing and dequeuing functions for cmdlists. */
392static inline void addQ(struct hlist_head *list, struct CommandList *c)
393{
394 hlist_add_head(&c->list, list);
395}
396
397static void enqueue_cmd_and_start_io(struct ctlr_info *h,
398 struct CommandList *c)
399{
400 unsigned long flags;
401 spin_lock_irqsave(&h->lock, flags);
402 addQ(&h->reqQ, c);
403 h->Qdepth++;
404 start_io(h);
405 spin_unlock_irqrestore(&h->lock, flags);
406}
407
408static inline void removeQ(struct CommandList *c)
409{
410 if (WARN_ON(hlist_unhashed(&c->list)))
411 return;
412 hlist_del_init(&c->list);
413}
414
415static inline int is_hba_lunid(unsigned char scsi3addr[])
416{
417 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0;
418}
419
420static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[])
421{
422 return (scsi3addr[3] & 0xC0) == 0x40;
423}
424
425static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
426 "UNKNOWN"
427};
428#define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1)
429
430static ssize_t raid_level_show(struct device *dev,
431 struct device_attribute *attr, char *buf)
432{
433 ssize_t l = 0;
434 int rlevel;
435 struct ctlr_info *h;
436 struct scsi_device *sdev;
437 struct hpsa_scsi_dev_t *hdev;
438 unsigned long flags;
439
440 sdev = to_scsi_device(dev);
441 h = sdev_to_hba(sdev);
442 spin_lock_irqsave(&h->lock, flags);
443 hdev = sdev->hostdata;
444 if (!hdev) {
445 spin_unlock_irqrestore(&h->lock, flags);
446 return -ENODEV;
447 }
448
449 /* Is this even a logical drive? */
450 if (!is_logical_dev_addr_mode(hdev->scsi3addr)) {
451 spin_unlock_irqrestore(&h->lock, flags);
452 l = snprintf(buf, PAGE_SIZE, "N/A\n");
453 return l;
454 }
455
456 rlevel = hdev->raid_level;
457 spin_unlock_irqrestore(&h->lock, flags);
458 if (rlevel < 0 || rlevel > RAID_UNKNOWN)
459 rlevel = RAID_UNKNOWN;
460 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]);
461 return l;
462}
463
464static ssize_t lunid_show(struct device *dev,
465 struct device_attribute *attr, char *buf)
466{
467 struct ctlr_info *h;
468 struct scsi_device *sdev;
469 struct hpsa_scsi_dev_t *hdev;
470 unsigned long flags;
471 unsigned char lunid[8];
472
473 sdev = to_scsi_device(dev);
474 h = sdev_to_hba(sdev);
475 spin_lock_irqsave(&h->lock, flags);
476 hdev = sdev->hostdata;
477 if (!hdev) {
478 spin_unlock_irqrestore(&h->lock, flags);
479 return -ENODEV;
480 }
481 memcpy(lunid, hdev->scsi3addr, sizeof(lunid));
482 spin_unlock_irqrestore(&h->lock, flags);
483 return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
484 lunid[0], lunid[1], lunid[2], lunid[3],
485 lunid[4], lunid[5], lunid[6], lunid[7]);
486}
487
488static ssize_t unique_id_show(struct device *dev,
489 struct device_attribute *attr, char *buf)
490{
491 struct ctlr_info *h;
492 struct scsi_device *sdev;
493 struct hpsa_scsi_dev_t *hdev;
494 unsigned long flags;
495 unsigned char sn[16];
496
497 sdev = to_scsi_device(dev);
498 h = sdev_to_hba(sdev);
499 spin_lock_irqsave(&h->lock, flags);
500 hdev = sdev->hostdata;
501 if (!hdev) {
502 spin_unlock_irqrestore(&h->lock, flags);
503 return -ENODEV;
504 }
505 memcpy(sn, hdev->device_id, sizeof(sn));
506 spin_unlock_irqrestore(&h->lock, flags);
507 return snprintf(buf, 16 * 2 + 2,
508 "%02X%02X%02X%02X%02X%02X%02X%02X"
509 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
510 sn[0], sn[1], sn[2], sn[3],
511 sn[4], sn[5], sn[6], sn[7],
512 sn[8], sn[9], sn[10], sn[11],
513 sn[12], sn[13], sn[14], sn[15]);
514}
515
516static int hpsa_find_target_lun(struct ctlr_info *h,
517 unsigned char scsi3addr[], int bus, int *target, int *lun)
518{
519 /* finds an unused bus, target, lun for a new physical device
520 * assumes h->devlock is held
521 */
522 int i, found = 0;
523 DECLARE_BITMAP(lun_taken, HPSA_MAX_SCSI_DEVS_PER_HBA);
524
525 memset(&lun_taken[0], 0, HPSA_MAX_SCSI_DEVS_PER_HBA >> 3);
526
527 for (i = 0; i < h->ndevices; i++) {
528 if (h->dev[i]->bus == bus && h->dev[i]->target != -1)
529 set_bit(h->dev[i]->target, lun_taken);
530 }
531
532 for (i = 0; i < HPSA_MAX_SCSI_DEVS_PER_HBA; i++) {
533 if (!test_bit(i, lun_taken)) {
534 /* *bus = 1; */
535 *target = i;
536 *lun = 0;
537 found = 1;
538 break;
539 }
540 }
541 return !found;
542}
543
544/* Add an entry into h->dev[] array. */
545static int hpsa_scsi_add_entry(struct ctlr_info *h, int hostno,
546 struct hpsa_scsi_dev_t *device,
547 struct hpsa_scsi_dev_t *added[], int *nadded)
548{
549 /* assumes h->devlock is held */
550 int n = h->ndevices;
551 int i;
552 unsigned char addr1[8], addr2[8];
553 struct hpsa_scsi_dev_t *sd;
554
555 if (n >= HPSA_MAX_SCSI_DEVS_PER_HBA) {
556 dev_err(&h->pdev->dev, "too many devices, some will be "
557 "inaccessible.\n");
558 return -1;
559 }
560
561 /* physical devices do not have lun or target assigned until now. */
562 if (device->lun != -1)
563 /* Logical device, lun is already assigned. */
564 goto lun_assigned;
565
566 /* If this device a non-zero lun of a multi-lun device
567 * byte 4 of the 8-byte LUN addr will contain the logical
568 * unit no, zero otherise.
569 */
570 if (device->scsi3addr[4] == 0) {
571 /* This is not a non-zero lun of a multi-lun device */
572 if (hpsa_find_target_lun(h, device->scsi3addr,
573 device->bus, &device->target, &device->lun) != 0)
574 return -1;
575 goto lun_assigned;
576 }
577
578 /* This is a non-zero lun of a multi-lun device.
579 * Search through our list and find the device which
580 * has the same 8 byte LUN address, excepting byte 4.
581 * Assign the same bus and target for this new LUN.
582 * Use the logical unit number from the firmware.
583 */
584 memcpy(addr1, device->scsi3addr, 8);
585 addr1[4] = 0;
586 for (i = 0; i < n; i++) {
587 sd = h->dev[i];
588 memcpy(addr2, sd->scsi3addr, 8);
589 addr2[4] = 0;
590 /* differ only in byte 4? */
591 if (memcmp(addr1, addr2, 8) == 0) {
592 device->bus = sd->bus;
593 device->target = sd->target;
594 device->lun = device->scsi3addr[4];
595 break;
596 }
597 }
598 if (device->lun == -1) {
599 dev_warn(&h->pdev->dev, "physical device with no LUN=0,"
600 " suspect firmware bug or unsupported hardware "
601 "configuration.\n");
602 return -1;
603 }
604
605lun_assigned:
606
607 h->dev[n] = device;
608 h->ndevices++;
609 added[*nadded] = device;
610 (*nadded)++;
611
612 /* initially, (before registering with scsi layer) we don't
613 * know our hostno and we don't want to print anything first
614 * time anyway (the scsi layer's inquiries will show that info)
615 */
616 /* if (hostno != -1) */
617 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d added.\n",
618 scsi_device_type(device->devtype), hostno,
619 device->bus, device->target, device->lun);
620 return 0;
621}
622
623/* Remove an entry from h->dev[] array. */
624static void hpsa_scsi_remove_entry(struct ctlr_info *h, int hostno, int entry,
625 struct hpsa_scsi_dev_t *removed[], int *nremoved)
626{
627 /* assumes h->devlock is held */
628 int i;
629 struct hpsa_scsi_dev_t *sd;
630
631 if (entry < 0 || entry >= HPSA_MAX_SCSI_DEVS_PER_HBA)
632 BUG();
633
634 sd = h->dev[entry];
635 removed[*nremoved] = h->dev[entry];
636 (*nremoved)++;
637
638 for (i = entry; i < h->ndevices-1; i++)
639 h->dev[i] = h->dev[i+1];
640 h->ndevices--;
641 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d removed.\n",
642 scsi_device_type(sd->devtype), hostno, sd->bus, sd->target,
643 sd->lun);
644}
645
646#define SCSI3ADDR_EQ(a, b) ( \
647 (a)[7] == (b)[7] && \
648 (a)[6] == (b)[6] && \
649 (a)[5] == (b)[5] && \
650 (a)[4] == (b)[4] && \
651 (a)[3] == (b)[3] && \
652 (a)[2] == (b)[2] && \
653 (a)[1] == (b)[1] && \
654 (a)[0] == (b)[0])
655
656static void fixup_botched_add(struct ctlr_info *h,
657 struct hpsa_scsi_dev_t *added)
658{
659 /* called when scsi_add_device fails in order to re-adjust
660 * h->dev[] to match the mid layer's view.
661 */
662 unsigned long flags;
663 int i, j;
664
665 spin_lock_irqsave(&h->lock, flags);
666 for (i = 0; i < h->ndevices; i++) {
667 if (h->dev[i] == added) {
668 for (j = i; j < h->ndevices-1; j++)
669 h->dev[j] = h->dev[j+1];
670 h->ndevices--;
671 break;
672 }
673 }
674 spin_unlock_irqrestore(&h->lock, flags);
675 kfree(added);
676}
677
678static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1,
679 struct hpsa_scsi_dev_t *dev2)
680{
681 if ((is_logical_dev_addr_mode(dev1->scsi3addr) ||
682 (dev1->lun != -1 && dev2->lun != -1)) &&
683 dev1->devtype != 0x0C)
684 return (memcmp(dev1, dev2, sizeof(*dev1)) == 0);
685
686 /* we compare everything except lun and target as these
687 * are not yet assigned. Compare parts likely
688 * to differ first
689 */
690 if (memcmp(dev1->scsi3addr, dev2->scsi3addr,
691 sizeof(dev1->scsi3addr)) != 0)
692 return 0;
693 if (memcmp(dev1->device_id, dev2->device_id,
694 sizeof(dev1->device_id)) != 0)
695 return 0;
696 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0)
697 return 0;
698 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0)
699 return 0;
700 if (memcmp(dev1->revision, dev2->revision, sizeof(dev1->revision)) != 0)
701 return 0;
702 if (dev1->devtype != dev2->devtype)
703 return 0;
704 if (dev1->raid_level != dev2->raid_level)
705 return 0;
706 if (dev1->bus != dev2->bus)
707 return 0;
708 return 1;
709}
710
711/* Find needle in haystack. If exact match found, return DEVICE_SAME,
712 * and return needle location in *index. If scsi3addr matches, but not
713 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
714 * location in *index. If needle not found, return DEVICE_NOT_FOUND.
715 */
716static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle,
717 struct hpsa_scsi_dev_t *haystack[], int haystack_size,
718 int *index)
719{
720 int i;
721#define DEVICE_NOT_FOUND 0
722#define DEVICE_CHANGED 1
723#define DEVICE_SAME 2
724 for (i = 0; i < haystack_size; i++) {
725 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) {
726 *index = i;
727 if (device_is_the_same(needle, haystack[i]))
728 return DEVICE_SAME;
729 else
730 return DEVICE_CHANGED;
731 }
732 }
733 *index = -1;
734 return DEVICE_NOT_FOUND;
735}
736
737static int adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno,
738 struct hpsa_scsi_dev_t *sd[], int nsds)
739{
740 /* sd contains scsi3 addresses and devtypes, and inquiry
741 * data. This function takes what's in sd to be the current
742 * reality and updates h->dev[] to reflect that reality.
743 */
744 int i, entry, device_change, changes = 0;
745 struct hpsa_scsi_dev_t *csd;
746 unsigned long flags;
747 struct hpsa_scsi_dev_t **added, **removed;
748 int nadded, nremoved;
749 struct Scsi_Host *sh = NULL;
750
751 added = kzalloc(sizeof(*added) * HPSA_MAX_SCSI_DEVS_PER_HBA,
752 GFP_KERNEL);
753 removed = kzalloc(sizeof(*removed) * HPSA_MAX_SCSI_DEVS_PER_HBA,
754 GFP_KERNEL);
755
756 if (!added || !removed) {
757 dev_warn(&h->pdev->dev, "out of memory in "
758 "adjust_hpsa_scsi_table\n");
759 goto free_and_out;
760 }
761
762 spin_lock_irqsave(&h->devlock, flags);
763
764 /* find any devices in h->dev[] that are not in
765 * sd[] and remove them from h->dev[], and for any
766 * devices which have changed, remove the old device
767 * info and add the new device info.
768 */
769 i = 0;
770 nremoved = 0;
771 nadded = 0;
772 while (i < h->ndevices) {
773 csd = h->dev[i];
774 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry);
775 if (device_change == DEVICE_NOT_FOUND) {
776 changes++;
777 hpsa_scsi_remove_entry(h, hostno, i,
778 removed, &nremoved);
779 continue; /* remove ^^^, hence i not incremented */
780 } else if (device_change == DEVICE_CHANGED) {
781 changes++;
782 hpsa_scsi_remove_entry(h, hostno, i,
783 removed, &nremoved);
784 (void) hpsa_scsi_add_entry(h, hostno, sd[entry],
785 added, &nadded);
786 /* add can't fail, we just removed one. */
787 sd[entry] = NULL; /* prevent it from being freed */
788 }
789 i++;
790 }
791
792 /* Now, make sure every device listed in sd[] is also
793 * listed in h->dev[], adding them if they aren't found
794 */
795
796 for (i = 0; i < nsds; i++) {
797 if (!sd[i]) /* if already added above. */
798 continue;
799 device_change = hpsa_scsi_find_entry(sd[i], h->dev,
800 h->ndevices, &entry);
801 if (device_change == DEVICE_NOT_FOUND) {
802 changes++;
803 if (hpsa_scsi_add_entry(h, hostno, sd[i],
804 added, &nadded) != 0)
805 break;
806 sd[i] = NULL; /* prevent from being freed later. */
807 } else if (device_change == DEVICE_CHANGED) {
808 /* should never happen... */
809 changes++;
810 dev_warn(&h->pdev->dev,
811 "device unexpectedly changed.\n");
812 /* but if it does happen, we just ignore that device */
813 }
814 }
815 spin_unlock_irqrestore(&h->devlock, flags);
816
817 /* Don't notify scsi mid layer of any changes the first time through
818 * (or if there are no changes) scsi_scan_host will do it later the
819 * first time through.
820 */
821 if (hostno == -1 || !changes)
822 goto free_and_out;
823
824 sh = h->scsi_host;
825 /* Notify scsi mid layer of any removed devices */
826 for (i = 0; i < nremoved; i++) {
827 struct scsi_device *sdev =
828 scsi_device_lookup(sh, removed[i]->bus,
829 removed[i]->target, removed[i]->lun);
830 if (sdev != NULL) {
831 scsi_remove_device(sdev);
832 scsi_device_put(sdev);
833 } else {
834 /* We don't expect to get here.
835 * future cmds to this device will get selection
836 * timeout as if the device was gone.
837 */
838 dev_warn(&h->pdev->dev, "didn't find c%db%dt%dl%d "
839 " for removal.", hostno, removed[i]->bus,
840 removed[i]->target, removed[i]->lun);
841 }
842 kfree(removed[i]);
843 removed[i] = NULL;
844 }
845
846 /* Notify scsi mid layer of any added devices */
847 for (i = 0; i < nadded; i++) {
848 if (scsi_add_device(sh, added[i]->bus,
849 added[i]->target, added[i]->lun) == 0)
850 continue;
851 dev_warn(&h->pdev->dev, "scsi_add_device c%db%dt%dl%d failed, "
852 "device not added.\n", hostno, added[i]->bus,
853 added[i]->target, added[i]->lun);
854 /* now we have to remove it from h->dev,
855 * since it didn't get added to scsi mid layer
856 */
857 fixup_botched_add(h, added[i]);
858 }
859
860free_and_out:
861 kfree(added);
862 kfree(removed);
863 return 0;
864}
865
866/*
867 * Lookup bus/target/lun and retrun corresponding struct hpsa_scsi_dev_t *
868 * Assume's h->devlock is held.
869 */
870static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h,
871 int bus, int target, int lun)
872{
873 int i;
874 struct hpsa_scsi_dev_t *sd;
875
876 for (i = 0; i < h->ndevices; i++) {
877 sd = h->dev[i];
878 if (sd->bus == bus && sd->target == target && sd->lun == lun)
879 return sd;
880 }
881 return NULL;
882}
883
884/* link sdev->hostdata to our per-device structure. */
885static int hpsa_slave_alloc(struct scsi_device *sdev)
886{
887 struct hpsa_scsi_dev_t *sd;
888 unsigned long flags;
889 struct ctlr_info *h;
890
891 h = sdev_to_hba(sdev);
892 spin_lock_irqsave(&h->devlock, flags);
893 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev),
894 sdev_id(sdev), sdev->lun);
895 if (sd != NULL)
896 sdev->hostdata = sd;
897 spin_unlock_irqrestore(&h->devlock, flags);
898 return 0;
899}
900
901static void hpsa_slave_destroy(struct scsi_device *sdev)
902{
903 return; /* nothing to do. */
904}
905
906static void hpsa_scsi_setup(struct ctlr_info *h)
907{
908 h->ndevices = 0;
909 h->scsi_host = NULL;
910 spin_lock_init(&h->devlock);
911 return;
912}
913
914static void complete_scsi_command(struct CommandList *cp,
915 int timeout, __u32 tag)
916{
917 struct scsi_cmnd *cmd;
918 struct ctlr_info *h;
919 struct ErrorInfo *ei;
920
921 unsigned char sense_key;
922 unsigned char asc; /* additional sense code */
923 unsigned char ascq; /* additional sense code qualifier */
924
925 ei = cp->err_info;
926 cmd = (struct scsi_cmnd *) cp->scsi_cmd;
927 h = cp->h;
928
929 scsi_dma_unmap(cmd); /* undo the DMA mappings */
930
931 cmd->result = (DID_OK << 16); /* host byte */
932 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
933 cmd->result |= (ei->ScsiStatus << 1);
934
935 /* copy the sense data whether we need to or not. */
936 memcpy(cmd->sense_buffer, ei->SenseInfo,
937 ei->SenseLen > SCSI_SENSE_BUFFERSIZE ?
938 SCSI_SENSE_BUFFERSIZE :
939 ei->SenseLen);
940 scsi_set_resid(cmd, ei->ResidualCnt);
941
942 if (ei->CommandStatus == 0) {
943 cmd->scsi_done(cmd);
944 cmd_free(h, cp);
945 return;
946 }
947
948 /* an error has occurred */
949 switch (ei->CommandStatus) {
950
951 case CMD_TARGET_STATUS:
952 if (ei->ScsiStatus) {
953 /* Get sense key */
954 sense_key = 0xf & ei->SenseInfo[2];
955 /* Get additional sense code */
956 asc = ei->SenseInfo[12];
957 /* Get addition sense code qualifier */
958 ascq = ei->SenseInfo[13];
959 }
960
961 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
962 if (check_for_unit_attention(h, cp)) {
963 cmd->result = DID_SOFT_ERROR << 16;
964 break;
965 }
966 if (sense_key == ILLEGAL_REQUEST) {
967 /*
968 * SCSI REPORT_LUNS is commonly unsupported on
969 * Smart Array. Suppress noisy complaint.
970 */
971 if (cp->Request.CDB[0] == REPORT_LUNS)
972 break;
973
974 /* If ASC/ASCQ indicate Logical Unit
975 * Not Supported condition,
976 */
977 if ((asc == 0x25) && (ascq == 0x0)) {
978 dev_warn(&h->pdev->dev, "cp %p "
979 "has check condition\n", cp);
980 break;
981 }
982 }
983
984 if (sense_key == NOT_READY) {
985 /* If Sense is Not Ready, Logical Unit
986 * Not ready, Manual Intervention
987 * required
988 */
989 if ((asc == 0x04) && (ascq == 0x03)) {
990 cmd->result = DID_NO_CONNECT << 16;
991 dev_warn(&h->pdev->dev, "cp %p "
992 "has check condition: unit "
993 "not ready, manual "
994 "intervention required\n", cp);
995 break;
996 }
997 }
998
999
1000 /* Must be some other type of check condition */
1001 dev_warn(&h->pdev->dev, "cp %p has check condition: "
1002 "unknown type: "
1003 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1004 "Returning result: 0x%x, "
1005 "cmd=[%02x %02x %02x %02x %02x "
1006 "%02x %02x %02x %02x %02x]\n",
1007 cp, sense_key, asc, ascq,
1008 cmd->result,
1009 cmd->cmnd[0], cmd->cmnd[1],
1010 cmd->cmnd[2], cmd->cmnd[3],
1011 cmd->cmnd[4], cmd->cmnd[5],
1012 cmd->cmnd[6], cmd->cmnd[7],
1013 cmd->cmnd[8], cmd->cmnd[9]);
1014 break;
1015 }
1016
1017
1018 /* Problem was not a check condition
1019 * Pass it up to the upper layers...
1020 */
1021 if (ei->ScsiStatus) {
1022 dev_warn(&h->pdev->dev, "cp %p has status 0x%x "
1023 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1024 "Returning result: 0x%x\n",
1025 cp, ei->ScsiStatus,
1026 sense_key, asc, ascq,
1027 cmd->result);
1028 } else { /* scsi status is zero??? How??? */
1029 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. "
1030 "Returning no connection.\n", cp),
1031
1032 /* Ordinarily, this case should never happen,
1033 * but there is a bug in some released firmware
1034 * revisions that allows it to happen if, for
1035 * example, a 4100 backplane loses power and
1036 * the tape drive is in it. We assume that
1037 * it's a fatal error of some kind because we
1038 * can't show that it wasn't. We will make it
1039 * look like selection timeout since that is
1040 * the most common reason for this to occur,
1041 * and it's severe enough.
1042 */
1043
1044 cmd->result = DID_NO_CONNECT << 16;
1045 }
1046 break;
1047
1048 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
1049 break;
1050 case CMD_DATA_OVERRUN:
1051 dev_warn(&h->pdev->dev, "cp %p has"
1052 " completed with data overrun "
1053 "reported\n", cp);
1054 break;
1055 case CMD_INVALID: {
1056 /* print_bytes(cp, sizeof(*cp), 1, 0);
1057 print_cmd(cp); */
1058 /* We get CMD_INVALID if you address a non-existent device
1059 * instead of a selection timeout (no response). You will
1060 * see this if you yank out a drive, then try to access it.
1061 * This is kind of a shame because it means that any other
1062 * CMD_INVALID (e.g. driver bug) will get interpreted as a
1063 * missing target. */
1064 cmd->result = DID_NO_CONNECT << 16;
1065 }
1066 break;
1067 case CMD_PROTOCOL_ERR:
1068 dev_warn(&h->pdev->dev, "cp %p has "
1069 "protocol error \n", cp);
1070 break;
1071 case CMD_HARDWARE_ERR:
1072 cmd->result = DID_ERROR << 16;
1073 dev_warn(&h->pdev->dev, "cp %p had hardware error\n", cp);
1074 break;
1075 case CMD_CONNECTION_LOST:
1076 cmd->result = DID_ERROR << 16;
1077 dev_warn(&h->pdev->dev, "cp %p had connection lost\n", cp);
1078 break;
1079 case CMD_ABORTED:
1080 cmd->result = DID_ABORT << 16;
1081 dev_warn(&h->pdev->dev, "cp %p was aborted with status 0x%x\n",
1082 cp, ei->ScsiStatus);
1083 break;
1084 case CMD_ABORT_FAILED:
1085 cmd->result = DID_ERROR << 16;
1086 dev_warn(&h->pdev->dev, "cp %p reports abort failed\n", cp);
1087 break;
1088 case CMD_UNSOLICITED_ABORT:
1089 cmd->result = DID_ABORT << 16;
1090 dev_warn(&h->pdev->dev, "cp %p aborted do to an unsolicited "
1091 "abort\n", cp);
1092 break;
1093 case CMD_TIMEOUT:
1094 cmd->result = DID_TIME_OUT << 16;
1095 dev_warn(&h->pdev->dev, "cp %p timedout\n", cp);
1096 break;
1097 default:
1098 cmd->result = DID_ERROR << 16;
1099 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n",
1100 cp, ei->CommandStatus);
1101 }
1102 cmd->scsi_done(cmd);
1103 cmd_free(h, cp);
1104}
1105
1106static int hpsa_scsi_detect(struct ctlr_info *h)
1107{
1108 struct Scsi_Host *sh;
1109 int error;
1110
1111 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h));
1112 if (sh == NULL)
1113 goto fail;
1114
1115 sh->io_port = 0;
1116 sh->n_io_port = 0;
1117 sh->this_id = -1;
1118 sh->max_channel = 3;
1119 sh->max_cmd_len = MAX_COMMAND_SIZE;
1120 sh->max_lun = HPSA_MAX_LUN;
1121 sh->max_id = HPSA_MAX_LUN;
1122 h->scsi_host = sh;
1123 sh->hostdata[0] = (unsigned long) h;
1124 sh->irq = h->intr[SIMPLE_MODE_INT];
1125 sh->unique_id = sh->irq;
1126 error = scsi_add_host(sh, &h->pdev->dev);
1127 if (error)
1128 goto fail_host_put;
1129 scsi_scan_host(sh);
1130 return 0;
1131
1132 fail_host_put:
1133 dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_add_host"
1134 " failed for controller %d\n", h->ctlr);
1135 scsi_host_put(sh);
1136 return -1;
1137 fail:
1138 dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_host_alloc"
1139 " failed for controller %d\n", h->ctlr);
1140 return -1;
1141}
1142
1143static void hpsa_pci_unmap(struct pci_dev *pdev,
1144 struct CommandList *c, int sg_used, int data_direction)
1145{
1146 int i;
1147 union u64bit addr64;
1148
1149 for (i = 0; i < sg_used; i++) {
1150 addr64.val32.lower = c->SG[i].Addr.lower;
1151 addr64.val32.upper = c->SG[i].Addr.upper;
1152 pci_unmap_single(pdev, (dma_addr_t) addr64.val, c->SG[i].Len,
1153 data_direction);
1154 }
1155}
1156
1157static void hpsa_map_one(struct pci_dev *pdev,
1158 struct CommandList *cp,
1159 unsigned char *buf,
1160 size_t buflen,
1161 int data_direction)
1162{
1163 __u64 addr64;
1164
1165 if (buflen == 0 || data_direction == PCI_DMA_NONE) {
1166 cp->Header.SGList = 0;
1167 cp->Header.SGTotal = 0;
1168 return;
1169 }
1170
1171 addr64 = (__u64) pci_map_single(pdev, buf, buflen, data_direction);
1172 cp->SG[0].Addr.lower =
1173 (__u32) (addr64 & (__u64) 0x00000000FFFFFFFF);
1174 cp->SG[0].Addr.upper =
1175 (__u32) ((addr64 >> 32) & (__u64) 0x00000000FFFFFFFF);
1176 cp->SG[0].Len = buflen;
1177 cp->Header.SGList = (__u8) 1; /* no. SGs contig in this cmd */
1178 cp->Header.SGTotal = (__u16) 1; /* total sgs in this cmd list */
1179}
1180
1181static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h,
1182 struct CommandList *c)
1183{
1184 DECLARE_COMPLETION_ONSTACK(wait);
1185
1186 c->waiting = &wait;
1187 enqueue_cmd_and_start_io(h, c);
1188 wait_for_completion(&wait);
1189}
1190
1191static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
1192 struct CommandList *c, int data_direction)
1193{
1194 int retry_count = 0;
1195
1196 do {
1197 memset(c->err_info, 0, sizeof(c->err_info));
1198 hpsa_scsi_do_simple_cmd_core(h, c);
1199 retry_count++;
1200 } while (check_for_unit_attention(h, c) && retry_count <= 3);
1201 hpsa_pci_unmap(h->pdev, c, 1, data_direction);
1202}
1203
1204static void hpsa_scsi_interpret_error(struct CommandList *cp)
1205{
1206 struct ErrorInfo *ei;
1207 struct device *d = &cp->h->pdev->dev;
1208
1209 ei = cp->err_info;
1210 switch (ei->CommandStatus) {
1211 case CMD_TARGET_STATUS:
1212 dev_warn(d, "cmd %p has completed with errors\n", cp);
1213 dev_warn(d, "cmd %p has SCSI Status = %x\n", cp,
1214 ei->ScsiStatus);
1215 if (ei->ScsiStatus == 0)
1216 dev_warn(d, "SCSI status is abnormally zero. "
1217 "(probably indicates selection timeout "
1218 "reported incorrectly due to a known "
1219 "firmware bug, circa July, 2001.)\n");
1220 break;
1221 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
1222 dev_info(d, "UNDERRUN\n");
1223 break;
1224 case CMD_DATA_OVERRUN:
1225 dev_warn(d, "cp %p has completed with data overrun\n", cp);
1226 break;
1227 case CMD_INVALID: {
1228 /* controller unfortunately reports SCSI passthru's
1229 * to non-existent targets as invalid commands.
1230 */
1231 dev_warn(d, "cp %p is reported invalid (probably means "
1232 "target device no longer present)\n", cp);
1233 /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0);
1234 print_cmd(cp); */
1235 }
1236 break;
1237 case CMD_PROTOCOL_ERR:
1238 dev_warn(d, "cp %p has protocol error \n", cp);
1239 break;
1240 case CMD_HARDWARE_ERR:
1241 /* cmd->result = DID_ERROR << 16; */
1242 dev_warn(d, "cp %p had hardware error\n", cp);
1243 break;
1244 case CMD_CONNECTION_LOST:
1245 dev_warn(d, "cp %p had connection lost\n", cp);
1246 break;
1247 case CMD_ABORTED:
1248 dev_warn(d, "cp %p was aborted\n", cp);
1249 break;
1250 case CMD_ABORT_FAILED:
1251 dev_warn(d, "cp %p reports abort failed\n", cp);
1252 break;
1253 case CMD_UNSOLICITED_ABORT:
1254 dev_warn(d, "cp %p aborted due to an unsolicited abort\n", cp);
1255 break;
1256 case CMD_TIMEOUT:
1257 dev_warn(d, "cp %p timed out\n", cp);
1258 break;
1259 default:
1260 dev_warn(d, "cp %p returned unknown status %x\n", cp,
1261 ei->CommandStatus);
1262 }
1263}
1264
1265static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
1266 unsigned char page, unsigned char *buf,
1267 unsigned char bufsize)
1268{
1269 int rc = IO_OK;
1270 struct CommandList *c;
1271 struct ErrorInfo *ei;
1272
1273 c = cmd_special_alloc(h);
1274
1275 if (c == NULL) { /* trouble... */
1276 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
1277 return -1;
1278 }
1279
1280 fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, page, scsi3addr, TYPE_CMD);
1281 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE);
1282 ei = c->err_info;
1283 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
1284 hpsa_scsi_interpret_error(c);
1285 rc = -1;
1286 }
1287 cmd_special_free(h, c);
1288 return rc;
1289}
1290
1291static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr)
1292{
1293 int rc = IO_OK;
1294 struct CommandList *c;
1295 struct ErrorInfo *ei;
1296
1297 c = cmd_special_alloc(h);
1298
1299 if (c == NULL) { /* trouble... */
1300 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
1301 return -1;
1302 }
1303
1304 fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, scsi3addr, TYPE_MSG);
1305 hpsa_scsi_do_simple_cmd_core(h, c);
1306 /* no unmap needed here because no data xfer. */
1307
1308 ei = c->err_info;
1309 if (ei->CommandStatus != 0) {
1310 hpsa_scsi_interpret_error(c);
1311 rc = -1;
1312 }
1313 cmd_special_free(h, c);
1314 return rc;
1315}
1316
1317static void hpsa_get_raid_level(struct ctlr_info *h,
1318 unsigned char *scsi3addr, unsigned char *raid_level)
1319{
1320 int rc;
1321 unsigned char *buf;
1322
1323 *raid_level = RAID_UNKNOWN;
1324 buf = kzalloc(64, GFP_KERNEL);
1325 if (!buf)
1326 return;
1327 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0xC1, buf, 64);
1328 if (rc == 0)
1329 *raid_level = buf[8];
1330 if (*raid_level > RAID_UNKNOWN)
1331 *raid_level = RAID_UNKNOWN;
1332 kfree(buf);
1333 return;
1334}
1335
1336/* Get the device id from inquiry page 0x83 */
1337static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr,
1338 unsigned char *device_id, int buflen)
1339{
1340 int rc;
1341 unsigned char *buf;
1342
1343 if (buflen > 16)
1344 buflen = 16;
1345 buf = kzalloc(64, GFP_KERNEL);
1346 if (!buf)
1347 return -1;
1348 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0x83, buf, 64);
1349 if (rc == 0)
1350 memcpy(device_id, &buf[8], buflen);
1351 kfree(buf);
1352 return rc != 0;
1353}
1354
1355static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
1356 struct ReportLUNdata *buf, int bufsize,
1357 int extended_response)
1358{
1359 int rc = IO_OK;
1360 struct CommandList *c;
1361 unsigned char scsi3addr[8];
1362 struct ErrorInfo *ei;
1363
1364 c = cmd_special_alloc(h);
1365 if (c == NULL) { /* trouble... */
1366 dev_err(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
1367 return -1;
1368 }
1369
1370 memset(&scsi3addr[0], 0, 8); /* address the controller */
1371
1372 fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h,
1373 buf, bufsize, 0, scsi3addr, TYPE_CMD);
1374 if (extended_response)
1375 c->Request.CDB[1] = extended_response;
1376 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE);
1377 ei = c->err_info;
1378 if (ei->CommandStatus != 0 &&
1379 ei->CommandStatus != CMD_DATA_UNDERRUN) {
1380 hpsa_scsi_interpret_error(c);
1381 rc = -1;
1382 }
1383 cmd_special_free(h, c);
1384 return rc;
1385}
1386
1387static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
1388 struct ReportLUNdata *buf,
1389 int bufsize, int extended_response)
1390{
1391 return hpsa_scsi_do_report_luns(h, 0, buf, bufsize, extended_response);
1392}
1393
1394static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,
1395 struct ReportLUNdata *buf, int bufsize)
1396{
1397 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0);
1398}
1399
1400static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device,
1401 int bus, int target, int lun)
1402{
1403 device->bus = bus;
1404 device->target = target;
1405 device->lun = lun;
1406}
1407
1408static int hpsa_update_device_info(struct ctlr_info *h,
1409 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device)
1410{
1411#define OBDR_TAPE_INQ_SIZE 49
1412 unsigned char *inq_buff = NULL;
1413
1414 inq_buff = kmalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
1415 if (!inq_buff)
1416 goto bail_out;
1417
1418 memset(inq_buff, 0, OBDR_TAPE_INQ_SIZE);
1419 /* Do an inquiry to the device to see what it is. */
1420 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
1421 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
1422 /* Inquiry failed (msg printed already) */
1423 dev_err(&h->pdev->dev,
1424 "hpsa_update_device_info: inquiry failed\n");
1425 goto bail_out;
1426 }
1427
1428 /* As a side effect, record the firmware version number
1429 * if we happen to be talking to the RAID controller.
1430 */
1431 if (is_hba_lunid(scsi3addr))
1432 memcpy(h->firm_ver, &inq_buff[32], 4);
1433
1434 this_device->devtype = (inq_buff[0] & 0x1f);
1435 memcpy(this_device->scsi3addr, scsi3addr, 8);
1436 memcpy(this_device->vendor, &inq_buff[8],
1437 sizeof(this_device->vendor));
1438 memcpy(this_device->model, &inq_buff[16],
1439 sizeof(this_device->model));
1440 memcpy(this_device->revision, &inq_buff[32],
1441 sizeof(this_device->revision));
1442 memset(this_device->device_id, 0,
1443 sizeof(this_device->device_id));
1444 hpsa_get_device_id(h, scsi3addr, this_device->device_id,
1445 sizeof(this_device->device_id));
1446
1447 if (this_device->devtype == TYPE_DISK &&
1448 is_logical_dev_addr_mode(scsi3addr))
1449 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level);
1450 else
1451 this_device->raid_level = RAID_UNKNOWN;
1452
1453 kfree(inq_buff);
1454 return 0;
1455
1456bail_out:
1457 kfree(inq_buff);
1458 return 1;
1459}
1460
1461static unsigned char *msa2xxx_model[] = {
1462 "MSA2012",
1463 "MSA2024",
1464 "MSA2312",
1465 "MSA2324",
1466 NULL,
1467};
1468
1469static int is_msa2xxx(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
1470{
1471 int i;
1472
1473 for (i = 0; msa2xxx_model[i]; i++)
1474 if (strncmp(device->model, msa2xxx_model[i],
1475 strlen(msa2xxx_model[i])) == 0)
1476 return 1;
1477 return 0;
1478}
1479
1480/* Helper function to assign bus, target, lun mapping of devices.
1481 * Puts non-msa2xxx logical volumes on bus 0, msa2xxx logical
1482 * volumes on bus 1, physical devices on bus 2. and the hba on bus 3.
1483 * Logical drive target and lun are assigned at this time, but
1484 * physical device lun and target assignment are deferred (assigned
1485 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
1486 */
1487static void figure_bus_target_lun(struct ctlr_info *h,
1488 __u8 *lunaddrbytes, int *bus, int *target, int *lun,
1489 struct hpsa_scsi_dev_t *device)
1490{
1491
1492 __u32 lunid;
1493
1494 if (is_logical_dev_addr_mode(lunaddrbytes)) {
1495 /* logical device */
1496 memcpy(&lunid, lunaddrbytes, sizeof(lunid));
1497 lunid = le32_to_cpu(lunid);
1498
1499 if (is_msa2xxx(h, device)) {
1500 *bus = 1;
1501 *target = (lunid >> 16) & 0x3fff;
1502 *lun = lunid & 0x00ff;
1503 } else {
1504 *bus = 0;
1505 *lun = 0;
1506 *target = lunid & 0x3fff;
1507 }
1508 } else {
1509 /* physical device */
1510 if (is_hba_lunid(lunaddrbytes))
1511 *bus = 3;
1512 else
1513 *bus = 2;
1514 *target = -1;
1515 *lun = -1; /* we will fill these in later. */
1516 }
1517}
1518
1519/*
1520 * If there is no lun 0 on a target, linux won't find any devices.
1521 * For the MSA2xxx boxes, we have to manually detect the enclosure
1522 * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report
1523 * it for some reason. *tmpdevice is the target we're adding,
1524 * this_device is a pointer into the current element of currentsd[]
1525 * that we're building up in update_scsi_devices(), below.
1526 * lunzerobits is a bitmap that tracks which targets already have a
1527 * lun 0 assigned.
1528 * Returns 1 if an enclosure was added, 0 if not.
1529 */
1530static int add_msa2xxx_enclosure_device(struct ctlr_info *h,
1531 struct hpsa_scsi_dev_t *tmpdevice,
1532 struct hpsa_scsi_dev_t *this_device, __u8 *lunaddrbytes,
1533 int bus, int target, int lun, unsigned long lunzerobits[],
1534 int *nmsa2xxx_enclosures)
1535{
1536 unsigned char scsi3addr[8];
1537
1538 if (test_bit(target, lunzerobits))
1539 return 0; /* There is already a lun 0 on this target. */
1540
1541 if (!is_logical_dev_addr_mode(lunaddrbytes))
1542 return 0; /* It's the logical targets that may lack lun 0. */
1543
1544 if (!is_msa2xxx(h, tmpdevice))
1545 return 0; /* It's only the MSA2xxx that have this problem. */
1546
1547 if (lun == 0) /* if lun is 0, then obviously we have a lun 0. */
1548 return 0;
1549
1550 if (is_hba_lunid(scsi3addr))
1551 return 0; /* Don't add the RAID controller here. */
1552
1553#define MAX_MSA2XXX_ENCLOSURES 32
1554 if (*nmsa2xxx_enclosures >= MAX_MSA2XXX_ENCLOSURES) {
1555 dev_warn(&h->pdev->dev, "Maximum number of MSA2XXX "
1556 "enclosures exceeded. Check your hardware "
1557 "configuration.");
1558 return 0;
1559 }
1560
1561 memset(scsi3addr, 0, 8);
1562 scsi3addr[3] = target;
1563 if (hpsa_update_device_info(h, scsi3addr, this_device))
1564 return 0;
1565 (*nmsa2xxx_enclosures)++;
1566 hpsa_set_bus_target_lun(this_device, bus, target, 0);
1567 set_bit(target, lunzerobits);
1568 return 1;
1569}
1570
1571/*
1572 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
1573 * logdev. The number of luns in physdev and logdev are returned in
1574 * *nphysicals and *nlogicals, respectively.
1575 * Returns 0 on success, -1 otherwise.
1576 */
1577static int hpsa_gather_lun_info(struct ctlr_info *h,
1578 int reportlunsize,
1579 struct ReportLUNdata *physdev, __u32 *nphysicals,
1580 struct ReportLUNdata *logdev, __u32 *nlogicals)
1581{
1582 if (hpsa_scsi_do_report_phys_luns(h, physdev, reportlunsize, 0)) {
1583 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
1584 return -1;
1585 }
1586 memcpy(nphysicals, &physdev->LUNListLength[0], sizeof(*nphysicals));
1587 *nphysicals = be32_to_cpu(*nphysicals) / 8;
1588#ifdef DEBUG
1589 dev_info(&h->pdev->dev, "number of physical luns is %d\n", *nphysicals);
1590#endif
1591 if (*nphysicals > HPSA_MAX_PHYS_LUN) {
1592 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded."
1593 " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
1594 *nphysicals - HPSA_MAX_PHYS_LUN);
1595 *nphysicals = HPSA_MAX_PHYS_LUN;
1596 }
1597 if (hpsa_scsi_do_report_log_luns(h, logdev, reportlunsize)) {
1598 dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
1599 return -1;
1600 }
1601 memcpy(nlogicals, &logdev->LUNListLength[0], sizeof(*nlogicals));
1602 *nlogicals = be32_to_cpu(*nlogicals) / 8;
1603#ifdef DEBUG
1604 dev_info(&h->pdev->dev, "number of logical luns is %d\n", *nlogicals);
1605#endif
1606 /* Reject Logicals in excess of our max capability. */
1607 if (*nlogicals > HPSA_MAX_LUN) {
1608 dev_warn(&h->pdev->dev,
1609 "maximum logical LUNs (%d) exceeded. "
1610 "%d LUNs ignored.\n", HPSA_MAX_LUN,
1611 *nlogicals - HPSA_MAX_LUN);
1612 *nlogicals = HPSA_MAX_LUN;
1613 }
1614 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) {
1615 dev_warn(&h->pdev->dev,
1616 "maximum logical + physical LUNs (%d) exceeded. "
1617 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
1618 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN);
1619 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals;
1620 }
1621 return 0;
1622}
1623
1624static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno)
1625{
1626 /* the idea here is we could get notified
1627 * that some devices have changed, so we do a report
1628 * physical luns and report logical luns cmd, and adjust
1629 * our list of devices accordingly.
1630 *
1631 * The scsi3addr's of devices won't change so long as the
1632 * adapter is not reset. That means we can rescan and
1633 * tell which devices we already know about, vs. new
1634 * devices, vs. disappearing devices.
1635 */
1636 struct ReportLUNdata *physdev_list = NULL;
1637 struct ReportLUNdata *logdev_list = NULL;
1638 unsigned char *inq_buff = NULL;
1639 __u32 nphysicals = 0;
1640 __u32 nlogicals = 0;
1641 __u32 ndev_allocated = 0;
1642 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
1643 int ncurrent = 0;
1644 int reportlunsize = sizeof(*physdev_list) + HPSA_MAX_PHYS_LUN * 8;
1645 int i, nmsa2xxx_enclosures, ndevs_to_allocate;
1646 int bus, target, lun;
1647 DECLARE_BITMAP(lunzerobits, HPSA_MAX_TARGETS_PER_CTLR);
1648
1649 currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_SCSI_DEVS_PER_HBA,
1650 GFP_KERNEL);
1651 physdev_list = kzalloc(reportlunsize, GFP_KERNEL);
1652 logdev_list = kzalloc(reportlunsize, GFP_KERNEL);
1653 inq_buff = kmalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
1654 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL);
1655
1656 if (!currentsd || !physdev_list || !logdev_list ||
1657 !inq_buff || !tmpdevice) {
1658 dev_err(&h->pdev->dev, "out of memory\n");
1659 goto out;
1660 }
1661 memset(lunzerobits, 0, sizeof(lunzerobits));
1662
1663 if (hpsa_gather_lun_info(h, reportlunsize, physdev_list, &nphysicals,
1664 logdev_list, &nlogicals))
1665 goto out;
1666
1667 /* We might see up to 32 MSA2xxx enclosures, actually 8 of them
1668 * but each of them 4 times through different paths. The plus 1
1669 * is for the RAID controller.
1670 */
1671 ndevs_to_allocate = nphysicals + nlogicals + MAX_MSA2XXX_ENCLOSURES + 1;
1672
1673 /* Allocate the per device structures */
1674 for (i = 0; i < ndevs_to_allocate; i++) {
1675 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL);
1676 if (!currentsd[i]) {
1677 dev_warn(&h->pdev->dev, "out of memory at %s:%d\n",
1678 __FILE__, __LINE__);
1679 goto out;
1680 }
1681 ndev_allocated++;
1682 }
1683
1684 /* adjust our table of devices */
1685 nmsa2xxx_enclosures = 0;
1686 for (i = 0; i < nphysicals + nlogicals + 1; i++) {
1687 __u8 *lunaddrbytes;
1688
1689 /* Figure out where the LUN ID info is coming from */
1690 if (i < nphysicals)
1691 lunaddrbytes = &physdev_list->LUN[i][0];
1692 else
1693 if (i < nphysicals + nlogicals)
1694 lunaddrbytes =
1695 &logdev_list->LUN[i-nphysicals][0];
1696 else /* jam in the RAID controller at the end */
1697 lunaddrbytes = RAID_CTLR_LUNID;
1698
1699 /* skip masked physical devices. */
1700 if (lunaddrbytes[3] & 0xC0 && i < nphysicals)
1701 continue;
1702
1703 /* Get device type, vendor, model, device id */
1704 if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice))
1705 continue; /* skip it if we can't talk to it. */
1706 figure_bus_target_lun(h, lunaddrbytes, &bus, &target, &lun,
1707 tmpdevice);
1708 this_device = currentsd[ncurrent];
1709
1710 /*
1711 * For the msa2xxx boxes, we have to insert a LUN 0 which
1712 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there
1713 * is nonetheless an enclosure device there. We have to
1714 * present that otherwise linux won't find anything if
1715 * there is no lun 0.
1716 */
1717 if (add_msa2xxx_enclosure_device(h, tmpdevice, this_device,
1718 lunaddrbytes, bus, target, lun, lunzerobits,
1719 &nmsa2xxx_enclosures)) {
1720 ncurrent++;
1721 this_device = currentsd[ncurrent];
1722 }
1723
1724 *this_device = *tmpdevice;
1725 hpsa_set_bus_target_lun(this_device, bus, target, lun);
1726
1727 switch (this_device->devtype) {
1728 case TYPE_ROM: {
1729 /* We don't *really* support actual CD-ROM devices,
1730 * just "One Button Disaster Recovery" tape drive
1731 * which temporarily pretends to be a CD-ROM drive.
1732 * So we check that the device is really an OBDR tape
1733 * device by checking for "$DR-10" in bytes 43-48 of
1734 * the inquiry data.
1735 */
1736 char obdr_sig[7];
1737#define OBDR_TAPE_SIG "$DR-10"
1738 strncpy(obdr_sig, &inq_buff[43], 6);
1739 obdr_sig[6] = '\0';
1740 if (strncmp(obdr_sig, OBDR_TAPE_SIG, 6) != 0)
1741 /* Not OBDR device, ignore it. */
1742 break;
1743 }
1744 ncurrent++;
1745 break;
1746 case TYPE_DISK:
1747 if (i < nphysicals)
1748 break;
1749 ncurrent++;
1750 break;
1751 case TYPE_TAPE:
1752 case TYPE_MEDIUM_CHANGER:
1753 ncurrent++;
1754 break;
1755 case TYPE_RAID:
1756 /* Only present the Smartarray HBA as a RAID controller.
1757 * If it's a RAID controller other than the HBA itself
1758 * (an external RAID controller, MSA500 or similar)
1759 * don't present it.
1760 */
1761 if (!is_hba_lunid(lunaddrbytes))
1762 break;
1763 ncurrent++;
1764 break;
1765 default:
1766 break;
1767 }
1768 if (ncurrent >= HPSA_MAX_SCSI_DEVS_PER_HBA)
1769 break;
1770 }
1771 adjust_hpsa_scsi_table(h, hostno, currentsd, ncurrent);
1772out:
1773 kfree(tmpdevice);
1774 for (i = 0; i < ndev_allocated; i++)
1775 kfree(currentsd[i]);
1776 kfree(currentsd);
1777 kfree(inq_buff);
1778 kfree(physdev_list);
1779 kfree(logdev_list);
1780 return;
1781}
1782
1783/* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
1784 * dma mapping and fills in the scatter gather entries of the
1785 * hpsa command, cp.
1786 */
1787static int hpsa_scatter_gather(struct pci_dev *pdev,
1788 struct CommandList *cp,
1789 struct scsi_cmnd *cmd)
1790{
1791 unsigned int len;
1792 struct scatterlist *sg;
1793 __u64 addr64;
1794 int use_sg, i;
1795
1796 BUG_ON(scsi_sg_count(cmd) > MAXSGENTRIES);
1797
1798 use_sg = scsi_dma_map(cmd);
1799 if (use_sg < 0)
1800 return use_sg;
1801
1802 if (!use_sg)
1803 goto sglist_finished;
1804
1805 scsi_for_each_sg(cmd, sg, use_sg, i) {
1806 addr64 = (__u64) sg_dma_address(sg);
1807 len = sg_dma_len(sg);
1808 cp->SG[i].Addr.lower =
1809 (__u32) (addr64 & (__u64) 0x00000000FFFFFFFF);
1810 cp->SG[i].Addr.upper =
1811 (__u32) ((addr64 >> 32) & (__u64) 0x00000000FFFFFFFF);
1812 cp->SG[i].Len = len;
1813 cp->SG[i].Ext = 0; /* we are not chaining */
1814 }
1815
1816sglist_finished:
1817
1818 cp->Header.SGList = (__u8) use_sg; /* no. SGs contig in this cmd */
1819 cp->Header.SGTotal = (__u16) use_sg; /* total sgs in this cmd list */
1820 return 0;
1821}
1822
1823
1824static int hpsa_scsi_queue_command(struct scsi_cmnd *cmd,
1825 void (*done)(struct scsi_cmnd *))
1826{
1827 struct ctlr_info *h;
1828 struct hpsa_scsi_dev_t *dev;
1829 unsigned char scsi3addr[8];
1830 struct CommandList *c;
1831 unsigned long flags;
1832
1833 /* Get the ptr to our adapter structure out of cmd->host. */
1834 h = sdev_to_hba(cmd->device);
1835 dev = cmd->device->hostdata;
1836 if (!dev) {
1837 cmd->result = DID_NO_CONNECT << 16;
1838 done(cmd);
1839 return 0;
1840 }
1841 memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr));
1842
1843 /* Need a lock as this is being allocated from the pool */
1844 spin_lock_irqsave(&h->lock, flags);
1845 c = cmd_alloc(h);
1846 spin_unlock_irqrestore(&h->lock, flags);
1847 if (c == NULL) { /* trouble... */
1848 dev_err(&h->pdev->dev, "cmd_alloc returned NULL!\n");
1849 return SCSI_MLQUEUE_HOST_BUSY;
1850 }
1851
1852 /* Fill in the command list header */
1853
1854 cmd->scsi_done = done; /* save this for use by completion code */
1855
1856 /* save c in case we have to abort it */
1857 cmd->host_scribble = (unsigned char *) c;
1858
1859 c->cmd_type = CMD_SCSI;
1860 c->scsi_cmd = cmd;
1861 c->Header.ReplyQueue = 0; /* unused in simple mode */
1862 memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8);
1863 c->Header.Tag.lower = c->busaddr; /* Use k. address of cmd as tag */
1864
1865 /* Fill in the request block... */
1866
1867 c->Request.Timeout = 0;
1868 memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
1869 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB));
1870 c->Request.CDBLen = cmd->cmd_len;
1871 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len);
1872 c->Request.Type.Type = TYPE_CMD;
1873 c->Request.Type.Attribute = ATTR_SIMPLE;
1874 switch (cmd->sc_data_direction) {
1875 case DMA_TO_DEVICE:
1876 c->Request.Type.Direction = XFER_WRITE;
1877 break;
1878 case DMA_FROM_DEVICE:
1879 c->Request.Type.Direction = XFER_READ;
1880 break;
1881 case DMA_NONE:
1882 c->Request.Type.Direction = XFER_NONE;
1883 break;
1884 case DMA_BIDIRECTIONAL:
1885 /* This can happen if a buggy application does a scsi passthru
1886 * and sets both inlen and outlen to non-zero. ( see
1887 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
1888 */
1889
1890 c->Request.Type.Direction = XFER_RSVD;
1891 /* This is technically wrong, and hpsa controllers should
1892 * reject it with CMD_INVALID, which is the most correct
1893 * response, but non-fibre backends appear to let it
1894 * slide by, and give the same results as if this field
1895 * were set correctly. Either way is acceptable for
1896 * our purposes here.
1897 */
1898
1899 break;
1900
1901 default:
1902 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
1903 cmd->sc_data_direction);
1904 BUG();
1905 break;
1906 }
1907
1908 if (hpsa_scatter_gather(h->pdev, c, cmd) < 0) { /* Fill SG list */
1909 cmd_free(h, c);
1910 return SCSI_MLQUEUE_HOST_BUSY;
1911 }
1912 enqueue_cmd_and_start_io(h, c);
1913 /* the cmd'll come back via intr handler in complete_scsi_command() */
1914 return 0;
1915}
1916
1917static void hpsa_unregister_scsi(struct ctlr_info *h)
1918{
1919 /* we are being forcibly unloaded, and may not refuse. */
1920 scsi_remove_host(h->scsi_host);
1921 scsi_host_put(h->scsi_host);
1922 h->scsi_host = NULL;
1923}
1924
1925static int hpsa_register_scsi(struct ctlr_info *h)
1926{
1927 int rc;
1928
1929 hpsa_update_scsi_devices(h, -1);
1930 rc = hpsa_scsi_detect(h);
1931 if (rc != 0)
1932 dev_err(&h->pdev->dev, "hpsa_register_scsi: failed"
1933 " hpsa_scsi_detect(), rc is %d\n", rc);
1934 return rc;
1935}
1936
1937static int wait_for_device_to_become_ready(struct ctlr_info *h,
1938 unsigned char lunaddr[])
1939{
1940 int rc = 0;
1941 int count = 0;
1942 int waittime = 1; /* seconds */
1943 struct CommandList *c;
1944
1945 c = cmd_special_alloc(h);
1946 if (!c) {
1947 dev_warn(&h->pdev->dev, "out of memory in "
1948 "wait_for_device_to_become_ready.\n");
1949 return IO_ERROR;
1950 }
1951
1952 /* Send test unit ready until device ready, or give up. */
1953 while (count < HPSA_TUR_RETRY_LIMIT) {
1954
1955 /* Wait for a bit. do this first, because if we send
1956 * the TUR right away, the reset will just abort it.
1957 */
1958 msleep(1000 * waittime);
1959 count++;
1960
1961 /* Increase wait time with each try, up to a point. */
1962 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS)
1963 waittime = waittime * 2;
1964
1965 /* Send the Test Unit Ready */
1966 fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, lunaddr, TYPE_CMD);
1967 hpsa_scsi_do_simple_cmd_core(h, c);
1968 /* no unmap needed here because no data xfer. */
1969
1970 if (c->err_info->CommandStatus == CMD_SUCCESS)
1971 break;
1972
1973 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
1974 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
1975 (c->err_info->SenseInfo[2] == NO_SENSE ||
1976 c->err_info->SenseInfo[2] == UNIT_ATTENTION))
1977 break;
1978
1979 dev_warn(&h->pdev->dev, "waiting %d secs "
1980 "for device to become ready.\n", waittime);
1981 rc = 1; /* device not ready. */
1982 }
1983
1984 if (rc)
1985 dev_warn(&h->pdev->dev, "giving up on device.\n");
1986 else
1987 dev_warn(&h->pdev->dev, "device is ready.\n");
1988
1989 cmd_special_free(h, c);
1990 return rc;
1991}
1992
1993/* Need at least one of these error handlers to keep ../scsi/hosts.c from
1994 * complaining. Doing a host- or bus-reset can't do anything good here.
1995 */
1996static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
1997{
1998 int rc;
1999 struct ctlr_info *h;
2000 struct hpsa_scsi_dev_t *dev;
2001
2002 /* find the controller to which the command to be aborted was sent */
2003 h = sdev_to_hba(scsicmd->device);
2004 if (h == NULL) /* paranoia */
2005 return FAILED;
2006 dev_warn(&h->pdev->dev, "resetting drive\n");
2007
2008 dev = scsicmd->device->hostdata;
2009 if (!dev) {
2010 dev_err(&h->pdev->dev, "hpsa_eh_device_reset_handler: "
2011 "device lookup failed.\n");
2012 return FAILED;
2013 }
2014 /* send a reset to the SCSI LUN which the command was sent to */
2015 rc = hpsa_send_reset(h, dev->scsi3addr);
2016 if (rc == 0 && wait_for_device_to_become_ready(h, dev->scsi3addr) == 0)
2017 return SUCCESS;
2018
2019 dev_warn(&h->pdev->dev, "resetting device failed.\n");
2020 return FAILED;
2021}
2022
2023/*
2024 * For operations that cannot sleep, a command block is allocated at init,
2025 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
2026 * which ones are free or in use. Lock must be held when calling this.
2027 * cmd_free() is the complement.
2028 */
2029static struct CommandList *cmd_alloc(struct ctlr_info *h)
2030{
2031 struct CommandList *c;
2032 int i;
2033 union u64bit temp64;
2034 dma_addr_t cmd_dma_handle, err_dma_handle;
2035
2036 do {
2037 i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds);
2038 if (i == h->nr_cmds)
2039 return NULL;
2040 } while (test_and_set_bit
2041 (i & (BITS_PER_LONG - 1),
2042 h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0);
2043 c = h->cmd_pool + i;
2044 memset(c, 0, sizeof(*c));
2045 cmd_dma_handle = h->cmd_pool_dhandle
2046 + i * sizeof(*c);
2047 c->err_info = h->errinfo_pool + i;
2048 memset(c->err_info, 0, sizeof(*c->err_info));
2049 err_dma_handle = h->errinfo_pool_dhandle
2050 + i * sizeof(*c->err_info);
2051 h->nr_allocs++;
2052
2053 c->cmdindex = i;
2054
2055 INIT_HLIST_NODE(&c->list);
2056 c->busaddr = (__u32) cmd_dma_handle;
2057 temp64.val = (__u64) err_dma_handle;
2058 c->ErrDesc.Addr.lower = temp64.val32.lower;
2059 c->ErrDesc.Addr.upper = temp64.val32.upper;
2060 c->ErrDesc.Len = sizeof(*c->err_info);
2061
2062 c->h = h;
2063 return c;
2064}
2065
2066/* For operations that can wait for kmalloc to possibly sleep,
2067 * this routine can be called. Lock need not be held to call
2068 * cmd_special_alloc. cmd_special_free() is the complement.
2069 */
2070static struct CommandList *cmd_special_alloc(struct ctlr_info *h)
2071{
2072 struct CommandList *c;
2073 union u64bit temp64;
2074 dma_addr_t cmd_dma_handle, err_dma_handle;
2075
2076 c = pci_alloc_consistent(h->pdev, sizeof(*c), &cmd_dma_handle);
2077 if (c == NULL)
2078 return NULL;
2079 memset(c, 0, sizeof(*c));
2080
2081 c->cmdindex = -1;
2082
2083 c->err_info = pci_alloc_consistent(h->pdev, sizeof(*c->err_info),
2084 &err_dma_handle);
2085
2086 if (c->err_info == NULL) {
2087 pci_free_consistent(h->pdev,
2088 sizeof(*c), c, cmd_dma_handle);
2089 return NULL;
2090 }
2091 memset(c->err_info, 0, sizeof(*c->err_info));
2092
2093 INIT_HLIST_NODE(&c->list);
2094 c->busaddr = (__u32) cmd_dma_handle;
2095 temp64.val = (__u64) err_dma_handle;
2096 c->ErrDesc.Addr.lower = temp64.val32.lower;
2097 c->ErrDesc.Addr.upper = temp64.val32.upper;
2098 c->ErrDesc.Len = sizeof(*c->err_info);
2099
2100 c->h = h;
2101 return c;
2102}
2103
2104static void cmd_free(struct ctlr_info *h, struct CommandList *c)
2105{
2106 int i;
2107
2108 i = c - h->cmd_pool;
2109 clear_bit(i & (BITS_PER_LONG - 1),
2110 h->cmd_pool_bits + (i / BITS_PER_LONG));
2111 h->nr_frees++;
2112}
2113
2114static void cmd_special_free(struct ctlr_info *h, struct CommandList *c)
2115{
2116 union u64bit temp64;
2117
2118 temp64.val32.lower = c->ErrDesc.Addr.lower;
2119 temp64.val32.upper = c->ErrDesc.Addr.upper;
2120 pci_free_consistent(h->pdev, sizeof(*c->err_info),
2121 c->err_info, (dma_addr_t) temp64.val);
2122 pci_free_consistent(h->pdev, sizeof(*c),
2123 c, (dma_addr_t) c->busaddr);
2124}
2125
2126#ifdef CONFIG_COMPAT
2127
2128static int do_ioctl(struct scsi_device *dev, int cmd, void *arg)
2129{
2130 int ret;
2131
2132 lock_kernel();
2133 ret = hpsa_ioctl(dev, cmd, arg);
2134 unlock_kernel();
2135 return ret;
2136}
2137
2138static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, void *arg);
2139static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
2140 int cmd, void *arg);
2141
2142static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg)
2143{
2144 switch (cmd) {
2145 case CCISS_GETPCIINFO:
2146 case CCISS_GETINTINFO:
2147 case CCISS_SETINTINFO:
2148 case CCISS_GETNODENAME:
2149 case CCISS_SETNODENAME:
2150 case CCISS_GETHEARTBEAT:
2151 case CCISS_GETBUSTYPES:
2152 case CCISS_GETFIRMVER:
2153 case CCISS_GETDRIVVER:
2154 case CCISS_REVALIDVOLS:
2155 case CCISS_DEREGDISK:
2156 case CCISS_REGNEWDISK:
2157 case CCISS_REGNEWD:
2158 case CCISS_RESCANDISK:
2159 case CCISS_GETLUNINFO:
2160 return do_ioctl(dev, cmd, arg);
2161
2162 case CCISS_PASSTHRU32:
2163 return hpsa_ioctl32_passthru(dev, cmd, arg);
2164 case CCISS_BIG_PASSTHRU32:
2165 return hpsa_ioctl32_big_passthru(dev, cmd, arg);
2166
2167 default:
2168 return -ENOIOCTLCMD;
2169 }
2170}
2171
2172static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, void *arg)
2173{
2174 IOCTL32_Command_struct __user *arg32 =
2175 (IOCTL32_Command_struct __user *) arg;
2176 IOCTL_Command_struct arg64;
2177 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
2178 int err;
2179 u32 cp;
2180
2181 err = 0;
2182 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
2183 sizeof(arg64.LUN_info));
2184 err |= copy_from_user(&arg64.Request, &arg32->Request,
2185 sizeof(arg64.Request));
2186 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
2187 sizeof(arg64.error_info));
2188 err |= get_user(arg64.buf_size, &arg32->buf_size);
2189 err |= get_user(cp, &arg32->buf);
2190 arg64.buf = compat_ptr(cp);
2191 err |= copy_to_user(p, &arg64, sizeof(arg64));
2192
2193 if (err)
2194 return -EFAULT;
2195
2196 err = do_ioctl(dev, CCISS_PASSTHRU, (void *)p);
2197 if (err)
2198 return err;
2199 err |= copy_in_user(&arg32->error_info, &p->error_info,
2200 sizeof(arg32->error_info));
2201 if (err)
2202 return -EFAULT;
2203 return err;
2204}
2205
2206static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
2207 int cmd, void *arg)
2208{
2209 BIG_IOCTL32_Command_struct __user *arg32 =
2210 (BIG_IOCTL32_Command_struct __user *) arg;
2211 BIG_IOCTL_Command_struct arg64;
2212 BIG_IOCTL_Command_struct __user *p =
2213 compat_alloc_user_space(sizeof(arg64));
2214 int err;
2215 u32 cp;
2216
2217 err = 0;
2218 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
2219 sizeof(arg64.LUN_info));
2220 err |= copy_from_user(&arg64.Request, &arg32->Request,
2221 sizeof(arg64.Request));
2222 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
2223 sizeof(arg64.error_info));
2224 err |= get_user(arg64.buf_size, &arg32->buf_size);
2225 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
2226 err |= get_user(cp, &arg32->buf);
2227 arg64.buf = compat_ptr(cp);
2228 err |= copy_to_user(p, &arg64, sizeof(arg64));
2229
2230 if (err)
2231 return -EFAULT;
2232
2233 err = do_ioctl(dev, CCISS_BIG_PASSTHRU, (void *)p);
2234 if (err)
2235 return err;
2236 err |= copy_in_user(&arg32->error_info, &p->error_info,
2237 sizeof(arg32->error_info));
2238 if (err)
2239 return -EFAULT;
2240 return err;
2241}
2242#endif
2243
2244static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp)
2245{
2246 struct hpsa_pci_info pciinfo;
2247
2248 if (!argp)
2249 return -EINVAL;
2250 pciinfo.domain = pci_domain_nr(h->pdev->bus);
2251 pciinfo.bus = h->pdev->bus->number;
2252 pciinfo.dev_fn = h->pdev->devfn;
2253 pciinfo.board_id = h->board_id;
2254 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo)))
2255 return -EFAULT;
2256 return 0;
2257}
2258
2259static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp)
2260{
2261 DriverVer_type DriverVer;
2262 unsigned char vmaj, vmin, vsubmin;
2263 int rc;
2264
2265 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu",
2266 &vmaj, &vmin, &vsubmin);
2267 if (rc != 3) {
2268 dev_info(&h->pdev->dev, "driver version string '%s' "
2269 "unrecognized.", HPSA_DRIVER_VERSION);
2270 vmaj = 0;
2271 vmin = 0;
2272 vsubmin = 0;
2273 }
2274 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin;
2275 if (!argp)
2276 return -EINVAL;
2277 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type)))
2278 return -EFAULT;
2279 return 0;
2280}
2281
2282static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
2283{
2284 IOCTL_Command_struct iocommand;
2285 struct CommandList *c;
2286 char *buff = NULL;
2287 union u64bit temp64;
2288
2289 if (!argp)
2290 return -EINVAL;
2291 if (!capable(CAP_SYS_RAWIO))
2292 return -EPERM;
2293 if (copy_from_user(&iocommand, argp, sizeof(iocommand)))
2294 return -EFAULT;
2295 if ((iocommand.buf_size < 1) &&
2296 (iocommand.Request.Type.Direction != XFER_NONE)) {
2297 return -EINVAL;
2298 }
2299 if (iocommand.buf_size > 0) {
2300 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
2301 if (buff == NULL)
2302 return -EFAULT;
2303 }
2304 if (iocommand.Request.Type.Direction == XFER_WRITE) {
2305 /* Copy the data into the buffer we created */
2306 if (copy_from_user(buff, iocommand.buf, iocommand.buf_size)) {
2307 kfree(buff);
2308 return -EFAULT;
2309 }
2310 } else
2311 memset(buff, 0, iocommand.buf_size);
2312 c = cmd_special_alloc(h);
2313 if (c == NULL) {
2314 kfree(buff);
2315 return -ENOMEM;
2316 }
2317 /* Fill in the command type */
2318 c->cmd_type = CMD_IOCTL_PEND;
2319 /* Fill in Command Header */
2320 c->Header.ReplyQueue = 0; /* unused in simple mode */
2321 if (iocommand.buf_size > 0) { /* buffer to fill */
2322 c->Header.SGList = 1;
2323 c->Header.SGTotal = 1;
2324 } else { /* no buffers to fill */
2325 c->Header.SGList = 0;
2326 c->Header.SGTotal = 0;
2327 }
2328 memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN));
2329 /* use the kernel address the cmd block for tag */
2330 c->Header.Tag.lower = c->busaddr;
2331
2332 /* Fill in Request block */
2333 memcpy(&c->Request, &iocommand.Request,
2334 sizeof(c->Request));
2335
2336 /* Fill in the scatter gather information */
2337 if (iocommand.buf_size > 0) {
2338 temp64.val = pci_map_single(h->pdev, buff,
2339 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
2340 c->SG[0].Addr.lower = temp64.val32.lower;
2341 c->SG[0].Addr.upper = temp64.val32.upper;
2342 c->SG[0].Len = iocommand.buf_size;
2343 c->SG[0].Ext = 0; /* we are not chaining*/
2344 }
2345 hpsa_scsi_do_simple_cmd_core(h, c);
2346 hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
2347 check_ioctl_unit_attention(h, c);
2348
2349 /* Copy the error information out */
2350 memcpy(&iocommand.error_info, c->err_info,
2351 sizeof(iocommand.error_info));
2352 if (copy_to_user(argp, &iocommand, sizeof(iocommand))) {
2353 kfree(buff);
2354 cmd_special_free(h, c);
2355 return -EFAULT;
2356 }
2357
2358 if (iocommand.Request.Type.Direction == XFER_READ) {
2359 /* Copy the data out of the buffer we created */
2360 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
2361 kfree(buff);
2362 cmd_special_free(h, c);
2363 return -EFAULT;
2364 }
2365 }
2366 kfree(buff);
2367 cmd_special_free(h, c);
2368 return 0;
2369}
2370
2371static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
2372{
2373 BIG_IOCTL_Command_struct *ioc;
2374 struct CommandList *c;
2375 unsigned char **buff = NULL;
2376 int *buff_size = NULL;
2377 union u64bit temp64;
2378 BYTE sg_used = 0;
2379 int status = 0;
2380 int i;
2381 __u32 left;
2382 __u32 sz;
2383 BYTE __user *data_ptr;
2384
2385 if (!argp)
2386 return -EINVAL;
2387 if (!capable(CAP_SYS_RAWIO))
2388 return -EPERM;
2389 ioc = (BIG_IOCTL_Command_struct *)
2390 kmalloc(sizeof(*ioc), GFP_KERNEL);
2391 if (!ioc) {
2392 status = -ENOMEM;
2393 goto cleanup1;
2394 }
2395 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
2396 status = -EFAULT;
2397 goto cleanup1;
2398 }
2399 if ((ioc->buf_size < 1) &&
2400 (ioc->Request.Type.Direction != XFER_NONE)) {
2401 status = -EINVAL;
2402 goto cleanup1;
2403 }
2404 /* Check kmalloc limits using all SGs */
2405 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
2406 status = -EINVAL;
2407 goto cleanup1;
2408 }
2409 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
2410 status = -EINVAL;
2411 goto cleanup1;
2412 }
2413 buff = kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL);
2414 if (!buff) {
2415 status = -ENOMEM;
2416 goto cleanup1;
2417 }
2418 buff_size = kmalloc(MAXSGENTRIES * sizeof(int), GFP_KERNEL);
2419 if (!buff_size) {
2420 status = -ENOMEM;
2421 goto cleanup1;
2422 }
2423 left = ioc->buf_size;
2424 data_ptr = ioc->buf;
2425 while (left) {
2426 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
2427 buff_size[sg_used] = sz;
2428 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
2429 if (buff[sg_used] == NULL) {
2430 status = -ENOMEM;
2431 goto cleanup1;
2432 }
2433 if (ioc->Request.Type.Direction == XFER_WRITE) {
2434 if (copy_from_user(buff[sg_used], data_ptr, sz)) {
2435 status = -ENOMEM;
2436 goto cleanup1;
2437 }
2438 } else
2439 memset(buff[sg_used], 0, sz);
2440 left -= sz;
2441 data_ptr += sz;
2442 sg_used++;
2443 }
2444 c = cmd_special_alloc(h);
2445 if (c == NULL) {
2446 status = -ENOMEM;
2447 goto cleanup1;
2448 }
2449 c->cmd_type = CMD_IOCTL_PEND;
2450 c->Header.ReplyQueue = 0;
2451
2452 if (ioc->buf_size > 0) {
2453 c->Header.SGList = sg_used;
2454 c->Header.SGTotal = sg_used;
2455 } else {
2456 c->Header.SGList = 0;
2457 c->Header.SGTotal = 0;
2458 }
2459 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN));
2460 c->Header.Tag.lower = c->busaddr;
2461 memcpy(&c->Request, &ioc->Request, sizeof(c->Request));
2462 if (ioc->buf_size > 0) {
2463 int i;
2464 for (i = 0; i < sg_used; i++) {
2465 temp64.val = pci_map_single(h->pdev, buff[i],
2466 buff_size[i], PCI_DMA_BIDIRECTIONAL);
2467 c->SG[i].Addr.lower = temp64.val32.lower;
2468 c->SG[i].Addr.upper = temp64.val32.upper;
2469 c->SG[i].Len = buff_size[i];
2470 /* we are not chaining */
2471 c->SG[i].Ext = 0;
2472 }
2473 }
2474 hpsa_scsi_do_simple_cmd_core(h, c);
2475 hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL);
2476 check_ioctl_unit_attention(h, c);
2477 /* Copy the error information out */
2478 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info));
2479 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
2480 cmd_special_free(h, c);
2481 status = -EFAULT;
2482 goto cleanup1;
2483 }
2484 if (ioc->Request.Type.Direction == XFER_READ) {
2485 /* Copy the data out of the buffer we created */
2486 BYTE __user *ptr = ioc->buf;
2487 for (i = 0; i < sg_used; i++) {
2488 if (copy_to_user(ptr, buff[i], buff_size[i])) {
2489 cmd_special_free(h, c);
2490 status = -EFAULT;
2491 goto cleanup1;
2492 }
2493 ptr += buff_size[i];
2494 }
2495 }
2496 cmd_special_free(h, c);
2497 status = 0;
2498cleanup1:
2499 if (buff) {
2500 for (i = 0; i < sg_used; i++)
2501 kfree(buff[i]);
2502 kfree(buff);
2503 }
2504 kfree(buff_size);
2505 kfree(ioc);
2506 return status;
2507}
2508
2509static void check_ioctl_unit_attention(struct ctlr_info *h,
2510 struct CommandList *c)
2511{
2512 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
2513 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
2514 (void) check_for_unit_attention(h, c);
2515}
2516/*
2517 * ioctl
2518 */
2519static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg)
2520{
2521 struct ctlr_info *h;
2522 void __user *argp = (void __user *)arg;
2523
2524 h = sdev_to_hba(dev);
2525
2526 switch (cmd) {
2527 case CCISS_DEREGDISK:
2528 case CCISS_REGNEWDISK:
2529 case CCISS_REGNEWD:
2530 hpsa_update_scsi_devices(h, dev->host->host_no);
2531 return 0;
2532 case CCISS_GETPCIINFO:
2533 return hpsa_getpciinfo_ioctl(h, argp);
2534 case CCISS_GETDRIVVER:
2535 return hpsa_getdrivver_ioctl(h, argp);
2536 case CCISS_PASSTHRU:
2537 return hpsa_passthru_ioctl(h, argp);
2538 case CCISS_BIG_PASSTHRU:
2539 return hpsa_big_passthru_ioctl(h, argp);
2540 default:
2541 return -ENOTTY;
2542 }
2543}
2544
2545static void fill_cmd(struct CommandList *c, __u8 cmd, struct ctlr_info *h,
2546 void *buff, size_t size, __u8 page_code, unsigned char *scsi3addr,
2547 int cmd_type)
2548{
2549 int pci_dir = XFER_NONE;
2550
2551 c->cmd_type = CMD_IOCTL_PEND;
2552 c->Header.ReplyQueue = 0;
2553 if (buff != NULL && size > 0) {
2554 c->Header.SGList = 1;
2555 c->Header.SGTotal = 1;
2556 } else {
2557 c->Header.SGList = 0;
2558 c->Header.SGTotal = 0;
2559 }
2560 c->Header.Tag.lower = c->busaddr;
2561 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
2562
2563 c->Request.Type.Type = cmd_type;
2564 if (cmd_type == TYPE_CMD) {
2565 switch (cmd) {
2566 case HPSA_INQUIRY:
2567 /* are we trying to read a vital product page */
2568 if (page_code != 0) {
2569 c->Request.CDB[1] = 0x01;
2570 c->Request.CDB[2] = page_code;
2571 }
2572 c->Request.CDBLen = 6;
2573 c->Request.Type.Attribute = ATTR_SIMPLE;
2574 c->Request.Type.Direction = XFER_READ;
2575 c->Request.Timeout = 0;
2576 c->Request.CDB[0] = HPSA_INQUIRY;
2577 c->Request.CDB[4] = size & 0xFF;
2578 break;
2579 case HPSA_REPORT_LOG:
2580 case HPSA_REPORT_PHYS:
2581 /* Talking to controller so It's a physical command
2582 mode = 00 target = 0. Nothing to write.
2583 */
2584 c->Request.CDBLen = 12;
2585 c->Request.Type.Attribute = ATTR_SIMPLE;
2586 c->Request.Type.Direction = XFER_READ;
2587 c->Request.Timeout = 0;
2588 c->Request.CDB[0] = cmd;
2589 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
2590 c->Request.CDB[7] = (size >> 16) & 0xFF;
2591 c->Request.CDB[8] = (size >> 8) & 0xFF;
2592 c->Request.CDB[9] = size & 0xFF;
2593 break;
2594
2595 case HPSA_READ_CAPACITY:
2596 c->Request.CDBLen = 10;
2597 c->Request.Type.Attribute = ATTR_SIMPLE;
2598 c->Request.Type.Direction = XFER_READ;
2599 c->Request.Timeout = 0;
2600 c->Request.CDB[0] = cmd;
2601 break;
2602 case HPSA_CACHE_FLUSH:
2603 c->Request.CDBLen = 12;
2604 c->Request.Type.Attribute = ATTR_SIMPLE;
2605 c->Request.Type.Direction = XFER_WRITE;
2606 c->Request.Timeout = 0;
2607 c->Request.CDB[0] = BMIC_WRITE;
2608 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
2609 break;
2610 case TEST_UNIT_READY:
2611 c->Request.CDBLen = 6;
2612 c->Request.Type.Attribute = ATTR_SIMPLE;
2613 c->Request.Type.Direction = XFER_NONE;
2614 c->Request.Timeout = 0;
2615 break;
2616 default:
2617 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd);
2618 BUG();
2619 return;
2620 }
2621 } else if (cmd_type == TYPE_MSG) {
2622 switch (cmd) {
2623
2624 case HPSA_DEVICE_RESET_MSG:
2625 c->Request.CDBLen = 16;
2626 c->Request.Type.Type = 1; /* It is a MSG not a CMD */
2627 c->Request.Type.Attribute = ATTR_SIMPLE;
2628 c->Request.Type.Direction = XFER_NONE;
2629 c->Request.Timeout = 0; /* Don't time out */
2630 c->Request.CDB[0] = 0x01; /* RESET_MSG is 0x01 */
2631 c->Request.CDB[1] = 0x03; /* Reset target above */
2632 /* If bytes 4-7 are zero, it means reset the */
2633 /* LunID device */
2634 c->Request.CDB[4] = 0x00;
2635 c->Request.CDB[5] = 0x00;
2636 c->Request.CDB[6] = 0x00;
2637 c->Request.CDB[7] = 0x00;
2638 break;
2639
2640 default:
2641 dev_warn(&h->pdev->dev, "unknown message type %d\n",
2642 cmd);
2643 BUG();
2644 }
2645 } else {
2646 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type);
2647 BUG();
2648 }
2649
2650 switch (c->Request.Type.Direction) {
2651 case XFER_READ:
2652 pci_dir = PCI_DMA_FROMDEVICE;
2653 break;
2654 case XFER_WRITE:
2655 pci_dir = PCI_DMA_TODEVICE;
2656 break;
2657 case XFER_NONE:
2658 pci_dir = PCI_DMA_NONE;
2659 break;
2660 default:
2661 pci_dir = PCI_DMA_BIDIRECTIONAL;
2662 }
2663
2664 hpsa_map_one(h->pdev, c, buff, size, pci_dir);
2665
2666 return;
2667}
2668
2669/*
2670 * Map (physical) PCI mem into (virtual) kernel space
2671 */
2672static void __iomem *remap_pci_mem(ulong base, ulong size)
2673{
2674 ulong page_base = ((ulong) base) & PAGE_MASK;
2675 ulong page_offs = ((ulong) base) - page_base;
2676 void __iomem *page_remapped = ioremap(page_base, page_offs + size);
2677
2678 return page_remapped ? (page_remapped + page_offs) : NULL;
2679}
2680
2681/* Takes cmds off the submission queue and sends them to the hardware,
2682 * then puts them on the queue of cmds waiting for completion.
2683 */
2684static void start_io(struct ctlr_info *h)
2685{
2686 struct CommandList *c;
2687
2688 while (!hlist_empty(&h->reqQ)) {
2689 c = hlist_entry(h->reqQ.first, struct CommandList, list);
2690 /* can't do anything if fifo is full */
2691 if ((h->access.fifo_full(h))) {
2692 dev_warn(&h->pdev->dev, "fifo full\n");
2693 break;
2694 }
2695
2696 /* Get the first entry from the Request Q */
2697 removeQ(c);
2698 h->Qdepth--;
2699
2700 /* Tell the controller execute command */
2701 h->access.submit_command(h, c);
2702
2703 /* Put job onto the completed Q */
2704 addQ(&h->cmpQ, c);
2705 }
2706}
2707
2708static inline unsigned long get_next_completion(struct ctlr_info *h)
2709{
2710 return h->access.command_completed(h);
2711}
2712
2713static inline int interrupt_pending(struct ctlr_info *h)
2714{
2715 return h->access.intr_pending(h);
2716}
2717
2718static inline long interrupt_not_for_us(struct ctlr_info *h)
2719{
2720 return ((h->access.intr_pending(h) == 0) ||
2721 (h->interrupts_enabled == 0));
2722}
2723
2724static inline int bad_tag(struct ctlr_info *h, __u32 tag_index,
2725 __u32 raw_tag)
2726{
2727 if (unlikely(tag_index >= h->nr_cmds)) {
2728 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag);
2729 return 1;
2730 }
2731 return 0;
2732}
2733
2734static inline void finish_cmd(struct CommandList *c, __u32 raw_tag)
2735{
2736 removeQ(c);
2737 if (likely(c->cmd_type == CMD_SCSI))
2738 complete_scsi_command(c, 0, raw_tag);
2739 else if (c->cmd_type == CMD_IOCTL_PEND)
2740 complete(c->waiting);
2741}
2742
2743static irqreturn_t do_hpsa_intr(int irq, void *dev_id)
2744{
2745 struct ctlr_info *h = dev_id;
2746 struct CommandList *c;
2747 unsigned long flags;
2748 __u32 raw_tag, tag, tag_index;
2749 struct hlist_node *tmp;
2750
2751 if (interrupt_not_for_us(h))
2752 return IRQ_NONE;
2753 spin_lock_irqsave(&h->lock, flags);
2754 while (interrupt_pending(h)) {
2755 while ((raw_tag = get_next_completion(h)) != FIFO_EMPTY) {
2756 if (likely(HPSA_TAG_CONTAINS_INDEX(raw_tag))) {
2757 tag_index = HPSA_TAG_TO_INDEX(raw_tag);
2758 if (bad_tag(h, tag_index, raw_tag))
2759 return IRQ_HANDLED;
2760 c = h->cmd_pool + tag_index;
2761 finish_cmd(c, raw_tag);
2762 continue;
2763 }
2764 tag = HPSA_TAG_DISCARD_ERROR_BITS(raw_tag);
2765 c = NULL;
2766 hlist_for_each_entry(c, tmp, &h->cmpQ, list) {
2767 if (c->busaddr == tag) {
2768 finish_cmd(c, raw_tag);
2769 break;
2770 }
2771 }
2772 }
2773 }
2774 spin_unlock_irqrestore(&h->lock, flags);
2775 return IRQ_HANDLED;
2776}
2777
2778/* Send a message CDB to the firmware. */
2779static __devinit int hpsa_message(struct pci_dev *pdev, unsigned char opcode,
2780 unsigned char type)
2781{
2782 struct Command {
2783 struct CommandListHeader CommandHeader;
2784 struct RequestBlock Request;
2785 struct ErrDescriptor ErrorDescriptor;
2786 };
2787 struct Command *cmd;
2788 static const size_t cmd_sz = sizeof(*cmd) +
2789 sizeof(cmd->ErrorDescriptor);
2790 dma_addr_t paddr64;
2791 uint32_t paddr32, tag;
2792 void __iomem *vaddr;
2793 int i, err;
2794
2795 vaddr = pci_ioremap_bar(pdev, 0);
2796 if (vaddr == NULL)
2797 return -ENOMEM;
2798
2799 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
2800 * CCISS commands, so they must be allocated from the lower 4GiB of
2801 * memory.
2802 */
2803 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
2804 if (err) {
2805 iounmap(vaddr);
2806 return -ENOMEM;
2807 }
2808
2809 cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64);
2810 if (cmd == NULL) {
2811 iounmap(vaddr);
2812 return -ENOMEM;
2813 }
2814
2815 /* This must fit, because of the 32-bit consistent DMA mask. Also,
2816 * although there's no guarantee, we assume that the address is at
2817 * least 4-byte aligned (most likely, it's page-aligned).
2818 */
2819 paddr32 = paddr64;
2820
2821 cmd->CommandHeader.ReplyQueue = 0;
2822 cmd->CommandHeader.SGList = 0;
2823 cmd->CommandHeader.SGTotal = 0;
2824 cmd->CommandHeader.Tag.lower = paddr32;
2825 cmd->CommandHeader.Tag.upper = 0;
2826 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);
2827
2828 cmd->Request.CDBLen = 16;
2829 cmd->Request.Type.Type = TYPE_MSG;
2830 cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE;
2831 cmd->Request.Type.Direction = XFER_NONE;
2832 cmd->Request.Timeout = 0; /* Don't time out */
2833 cmd->Request.CDB[0] = opcode;
2834 cmd->Request.CDB[1] = type;
2835 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */
2836 cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(*cmd);
2837 cmd->ErrorDescriptor.Addr.upper = 0;
2838 cmd->ErrorDescriptor.Len = sizeof(struct ErrorInfo);
2839
2840 writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET);
2841
2842 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) {
2843 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
2844 if (HPSA_TAG_DISCARD_ERROR_BITS(tag) == paddr32)
2845 break;
2846 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS);
2847 }
2848
2849 iounmap(vaddr);
2850
2851 /* we leak the DMA buffer here ... no choice since the controller could
2852 * still complete the command.
2853 */
2854 if (i == HPSA_MSG_SEND_RETRY_LIMIT) {
2855 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n",
2856 opcode, type);
2857 return -ETIMEDOUT;
2858 }
2859
2860 pci_free_consistent(pdev, cmd_sz, cmd, paddr64);
2861
2862 if (tag & HPSA_ERROR_BIT) {
2863 dev_err(&pdev->dev, "controller message %02x:%02x failed\n",
2864 opcode, type);
2865 return -EIO;
2866 }
2867
2868 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n",
2869 opcode, type);
2870 return 0;
2871}
2872
2873#define hpsa_soft_reset_controller(p) hpsa_message(p, 1, 0)
2874#define hpsa_noop(p) hpsa_message(p, 3, 0)
2875
2876static __devinit int hpsa_reset_msi(struct pci_dev *pdev)
2877{
2878/* the #defines are stolen from drivers/pci/msi.h. */
2879#define msi_control_reg(base) (base + PCI_MSI_FLAGS)
2880#define PCI_MSIX_FLAGS_ENABLE (1 << 15)
2881
2882 int pos;
2883 u16 control = 0;
2884
2885 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
2886 if (pos) {
2887 pci_read_config_word(pdev, msi_control_reg(pos), &control);
2888 if (control & PCI_MSI_FLAGS_ENABLE) {
2889 dev_info(&pdev->dev, "resetting MSI\n");
2890 pci_write_config_word(pdev, msi_control_reg(pos),
2891 control & ~PCI_MSI_FLAGS_ENABLE);
2892 }
2893 }
2894
2895 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
2896 if (pos) {
2897 pci_read_config_word(pdev, msi_control_reg(pos), &control);
2898 if (control & PCI_MSIX_FLAGS_ENABLE) {
2899 dev_info(&pdev->dev, "resetting MSI-X\n");
2900 pci_write_config_word(pdev, msi_control_reg(pos),
2901 control & ~PCI_MSIX_FLAGS_ENABLE);
2902 }
2903 }
2904
2905 return 0;
2906}
2907
2908/* This does a hard reset of the controller using PCI power management
2909 * states.
2910 */
2911static __devinit int hpsa_hard_reset_controller(struct pci_dev *pdev)
2912{
2913 u16 pmcsr, saved_config_space[32];
2914 int i, pos;
2915
2916 dev_info(&pdev->dev, "using PCI PM to reset controller\n");
2917
2918 /* This is very nearly the same thing as
2919 *
2920 * pci_save_state(pci_dev);
2921 * pci_set_power_state(pci_dev, PCI_D3hot);
2922 * pci_set_power_state(pci_dev, PCI_D0);
2923 * pci_restore_state(pci_dev);
2924 *
2925 * but we can't use these nice canned kernel routines on
2926 * kexec, because they also check the MSI/MSI-X state in PCI
2927 * configuration space and do the wrong thing when it is
2928 * set/cleared. Also, the pci_save/restore_state functions
2929 * violate the ordering requirements for restoring the
2930 * configuration space from the CCISS document (see the
2931 * comment below). So we roll our own ....
2932 */
2933
2934 for (i = 0; i < 32; i++)
2935 pci_read_config_word(pdev, 2*i, &saved_config_space[i]);
2936
2937 pos = pci_find_capability(pdev, PCI_CAP_ID_PM);
2938 if (pos == 0) {
2939 dev_err(&pdev->dev,
2940 "hpsa_reset_controller: PCI PM not supported\n");
2941 return -ENODEV;
2942 }
2943
2944 /* Quoting from the Open CISS Specification: "The Power
2945 * Management Control/Status Register (CSR) controls the power
2946 * state of the device. The normal operating state is D0,
2947 * CSR=00h. The software off state is D3, CSR=03h. To reset
2948 * the controller, place the interface device in D3 then to
2949 * D0, this causes a secondary PCI reset which will reset the
2950 * controller."
2951 */
2952
2953 /* enter the D3hot power management state */
2954 pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr);
2955 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
2956 pmcsr |= PCI_D3hot;
2957 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
2958
2959 msleep(500);
2960
2961 /* enter the D0 power management state */
2962 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
2963 pmcsr |= PCI_D0;
2964 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
2965
2966 msleep(500);
2967
2968 /* Restore the PCI configuration space. The Open CISS
2969 * Specification says, "Restore the PCI Configuration
2970 * Registers, offsets 00h through 60h. It is important to
2971 * restore the command register, 16-bits at offset 04h,
2972 * last. Do not restore the configuration status register,
2973 * 16-bits at offset 06h." Note that the offset is 2*i.
2974 */
2975 for (i = 0; i < 32; i++) {
2976 if (i == 2 || i == 3)
2977 continue;
2978 pci_write_config_word(pdev, 2*i, saved_config_space[i]);
2979 }
2980 wmb();
2981 pci_write_config_word(pdev, 4, saved_config_space[2]);
2982
2983 return 0;
2984}
2985
2986/*
2987 * We cannot read the structure directly, for portability we must use
2988 * the io functions.
2989 * This is for debug only.
2990 */
2991#ifdef HPSA_DEBUG
2992static void print_cfg_table(struct device *dev, struct CfgTable *tb)
2993{
2994 int i;
2995 char temp_name[17];
2996
2997 dev_info(dev, "Controller Configuration information\n");
2998 dev_info(dev, "------------------------------------\n");
2999 for (i = 0; i < 4; i++)
3000 temp_name[i] = readb(&(tb->Signature[i]));
3001 temp_name[4] = '\0';
3002 dev_info(dev, " Signature = %s\n", temp_name);
3003 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence)));
3004 dev_info(dev, " Transport methods supported = 0x%x\n",
3005 readl(&(tb->TransportSupport)));
3006 dev_info(dev, " Transport methods active = 0x%x\n",
3007 readl(&(tb->TransportActive)));
3008 dev_info(dev, " Requested transport Method = 0x%x\n",
3009 readl(&(tb->HostWrite.TransportRequest)));
3010 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n",
3011 readl(&(tb->HostWrite.CoalIntDelay)));
3012 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n",
3013 readl(&(tb->HostWrite.CoalIntCount)));
3014 dev_info(dev, " Max outstanding commands = 0x%d\n",
3015 readl(&(tb->CmdsOutMax)));
3016 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
3017 for (i = 0; i < 16; i++)
3018 temp_name[i] = readb(&(tb->ServerName[i]));
3019 temp_name[16] = '\0';
3020 dev_info(dev, " Server Name = %s\n", temp_name);
3021 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n",
3022 readl(&(tb->HeartBeat)));
3023}
3024#endif /* HPSA_DEBUG */
3025
3026static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
3027{
3028 int i, offset, mem_type, bar_type;
3029
3030 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
3031 return 0;
3032 offset = 0;
3033 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
3034 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
3035 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
3036 offset += 4;
3037 else {
3038 mem_type = pci_resource_flags(pdev, i) &
3039 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
3040 switch (mem_type) {
3041 case PCI_BASE_ADDRESS_MEM_TYPE_32:
3042 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
3043 offset += 4; /* 32 bit */
3044 break;
3045 case PCI_BASE_ADDRESS_MEM_TYPE_64:
3046 offset += 8;
3047 break;
3048 default: /* reserved in PCI 2.2 */
3049 dev_warn(&pdev->dev,
3050 "base address is invalid\n");
3051 return -1;
3052 break;
3053 }
3054 }
3055 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
3056 return i + 1;
3057 }
3058 return -1;
3059}
3060
3061/* If MSI/MSI-X is supported by the kernel we will try to enable it on
3062 * controllers that are capable. If not, we use IO-APIC mode.
3063 */
3064
3065static void __devinit hpsa_interrupt_mode(struct ctlr_info *h,
3066 struct pci_dev *pdev, __u32 board_id)
3067{
3068#ifdef CONFIG_PCI_MSI
3069 int err;
3070 struct msix_entry hpsa_msix_entries[4] = { {0, 0}, {0, 1},
3071 {0, 2}, {0, 3}
3072 };
3073
3074 /* Some boards advertise MSI but don't really support it */
3075 if ((board_id == 0x40700E11) ||
3076 (board_id == 0x40800E11) ||
3077 (board_id == 0x40820E11) || (board_id == 0x40830E11))
3078 goto default_int_mode;
3079 if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) {
3080 dev_info(&pdev->dev, "MSIX\n");
3081 err = pci_enable_msix(pdev, hpsa_msix_entries, 4);
3082 if (!err) {
3083 h->intr[0] = hpsa_msix_entries[0].vector;
3084 h->intr[1] = hpsa_msix_entries[1].vector;
3085 h->intr[2] = hpsa_msix_entries[2].vector;
3086 h->intr[3] = hpsa_msix_entries[3].vector;
3087 h->msix_vector = 1;
3088 return;
3089 }
3090 if (err > 0) {
3091 dev_warn(&pdev->dev, "only %d MSI-X vectors "
3092 "available\n", err);
3093 goto default_int_mode;
3094 } else {
3095 dev_warn(&pdev->dev, "MSI-X init failed %d\n",
3096 err);
3097 goto default_int_mode;
3098 }
3099 }
3100 if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) {
3101 dev_info(&pdev->dev, "MSI\n");
3102 if (!pci_enable_msi(pdev))
3103 h->msi_vector = 1;
3104 else
3105 dev_warn(&pdev->dev, "MSI init failed\n");
3106 }
3107default_int_mode:
3108#endif /* CONFIG_PCI_MSI */
3109 /* if we get here we're going to use the default interrupt mode */
3110 h->intr[SIMPLE_MODE_INT] = pdev->irq;
3111 return;
3112}
3113
3114static int hpsa_pci_init(struct ctlr_info *h, struct pci_dev *pdev)
3115{
3116 ushort subsystem_vendor_id, subsystem_device_id, command;
3117 __u32 board_id, scratchpad = 0;
3118 __u64 cfg_offset;
3119 __u32 cfg_base_addr;
3120 __u64 cfg_base_addr_index;
3121 int i, prod_index, err;
3122
3123 subsystem_vendor_id = pdev->subsystem_vendor;
3124 subsystem_device_id = pdev->subsystem_device;
3125 board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
3126 subsystem_vendor_id);
3127
3128 for (i = 0; i < ARRAY_SIZE(products); i++)
3129 if (board_id == products[i].board_id)
3130 break;
3131
3132 prod_index = i;
3133
3134 if (prod_index == ARRAY_SIZE(products)) {
3135 prod_index--;
3136 if (subsystem_vendor_id != PCI_VENDOR_ID_HP ||
3137 !hpsa_allow_any) {
3138 dev_warn(&pdev->dev, "unrecognized board ID:"
3139 " 0x%08lx, ignoring.\n",
3140 (unsigned long) board_id);
3141 return -ENODEV;
3142 }
3143 }
3144 /* check to see if controller has been disabled
3145 * BEFORE trying to enable it
3146 */
3147 (void)pci_read_config_word(pdev, PCI_COMMAND, &command);
3148 if (!(command & 0x02)) {
3149 dev_warn(&pdev->dev, "controller appears to be disabled\n");
3150 return -ENODEV;
3151 }
3152
3153 err = pci_enable_device(pdev);
3154 if (err) {
3155 dev_warn(&pdev->dev, "unable to enable PCI device\n");
3156 return err;
3157 }
3158
3159 err = pci_request_regions(pdev, "hpsa");
3160 if (err) {
3161 dev_err(&pdev->dev, "cannot obtain PCI resources, aborting\n");
3162 return err;
3163 }
3164
3165 /* If the kernel supports MSI/MSI-X we will try to enable that,
3166 * else we use the IO-APIC interrupt assigned to us by system ROM.
3167 */
3168 hpsa_interrupt_mode(h, pdev, board_id);
3169
3170 /* find the memory BAR */
3171 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
3172 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM)
3173 break;
3174 }
3175 if (i == DEVICE_COUNT_RESOURCE) {
3176 dev_warn(&pdev->dev, "no memory BAR found\n");
3177 err = -ENODEV;
3178 goto err_out_free_res;
3179 }
3180
3181 h->paddr = pci_resource_start(pdev, i); /* addressing mode bits
3182 * already removed
3183 */
3184
3185 h->vaddr = remap_pci_mem(h->paddr, 0x250);
3186
3187 /* Wait for the board to become ready. */
3188 for (i = 0; i < HPSA_BOARD_READY_ITERATIONS; i++) {
3189 scratchpad = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
3190 if (scratchpad == HPSA_FIRMWARE_READY)
3191 break;
3192 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
3193 }
3194 if (scratchpad != HPSA_FIRMWARE_READY) {
3195 dev_warn(&pdev->dev, "board not ready, timed out.\n");
3196 err = -ENODEV;
3197 goto err_out_free_res;
3198 }
3199
3200 /* get the address index number */
3201 cfg_base_addr = readl(h->vaddr + SA5_CTCFG_OFFSET);
3202 cfg_base_addr &= (__u32) 0x0000ffff;
3203 cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr);
3204 if (cfg_base_addr_index == -1) {
3205 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n");
3206 err = -ENODEV;
3207 goto err_out_free_res;
3208 }
3209
3210 cfg_offset = readl(h->vaddr + SA5_CTMEM_OFFSET);
3211 h->cfgtable = remap_pci_mem(pci_resource_start(pdev,
3212 cfg_base_addr_index) + cfg_offset,
3213 sizeof(h->cfgtable));
3214 h->board_id = board_id;
3215
3216 /* Query controller for max supported commands: */
3217 h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
3218
3219 h->product_name = products[prod_index].product_name;
3220 h->access = *(products[prod_index].access);
3221 /* Allow room for some ioctls */
3222 h->nr_cmds = h->max_commands - 4;
3223
3224 if ((readb(&h->cfgtable->Signature[0]) != 'C') ||
3225 (readb(&h->cfgtable->Signature[1]) != 'I') ||
3226 (readb(&h->cfgtable->Signature[2]) != 'S') ||
3227 (readb(&h->cfgtable->Signature[3]) != 'S')) {
3228 dev_warn(&pdev->dev, "not a valid CISS config table\n");
3229 err = -ENODEV;
3230 goto err_out_free_res;
3231 }
3232#ifdef CONFIG_X86
3233 {
3234 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
3235 __u32 prefetch;
3236 prefetch = readl(&(h->cfgtable->SCSI_Prefetch));
3237 prefetch |= 0x100;
3238 writel(prefetch, &(h->cfgtable->SCSI_Prefetch));
3239 }
3240#endif
3241
3242 /* Disabling DMA prefetch for the P600
3243 * An ASIC bug may result in a prefetch beyond
3244 * physical memory.
3245 */
3246 if (board_id == 0x3225103C) {
3247 __u32 dma_prefetch;
3248 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
3249 dma_prefetch |= 0x8000;
3250 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
3251 }
3252
3253 h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
3254 /* Update the field, and then ring the doorbell */
3255 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
3256 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
3257
3258 /* under certain very rare conditions, this can take awhile.
3259 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3260 * as we enter this code.)
3261 */
3262 for (i = 0; i < MAX_CONFIG_WAIT; i++) {
3263 if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
3264 break;
3265 /* delay and try again */
3266 msleep(10);
3267 }
3268
3269#ifdef HPSA_DEBUG
3270 print_cfg_table(&pdev->dev, h->cfgtable);
3271#endif /* HPSA_DEBUG */
3272
3273 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) {
3274 dev_warn(&pdev->dev, "unable to get board into simple mode\n");
3275 err = -ENODEV;
3276 goto err_out_free_res;
3277 }
3278 return 0;
3279
3280err_out_free_res:
3281 /*
3282 * Deliberately omit pci_disable_device(): it does something nasty to
3283 * Smart Array controllers that pci_enable_device does not undo
3284 */
3285 pci_release_regions(pdev);
3286 return err;
3287}
3288
3289static int __devinit hpsa_init_one(struct pci_dev *pdev,
3290 const struct pci_device_id *ent)
3291{
3292 int i;
3293 int dac;
3294 struct ctlr_info *h;
3295
3296 if (number_of_controllers == 0)
3297 printk(KERN_INFO DRIVER_NAME "\n");
3298 if (reset_devices) {
3299 /* Reset the controller with a PCI power-cycle */
3300 if (hpsa_hard_reset_controller(pdev) || hpsa_reset_msi(pdev))
3301 return -ENODEV;
3302
3303 /* Some devices (notably the HP Smart Array 5i Controller)
3304 need a little pause here */
3305 msleep(HPSA_POST_RESET_PAUSE_MSECS);
3306
3307 /* Now try to get the controller to respond to a no-op */
3308 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) {
3309 if (hpsa_noop(pdev) == 0)
3310 break;
3311 else
3312 dev_warn(&pdev->dev, "no-op failed%s\n",
3313 (i < 11 ? "; re-trying" : ""));
3314 }
3315 }
3316
3317 BUILD_BUG_ON(sizeof(struct CommandList) % 8);
3318 h = kzalloc(sizeof(*h), GFP_KERNEL);
3319 if (!h)
3320 return -1;
3321
3322 h->busy_initializing = 1;
3323 INIT_HLIST_HEAD(&h->cmpQ);
3324 INIT_HLIST_HEAD(&h->reqQ);
3325 mutex_init(&h->busy_shutting_down);
3326 init_completion(&h->scan_wait);
3327 if (hpsa_pci_init(h, pdev) != 0)
3328 goto clean1;
3329
3330 sprintf(h->devname, "hpsa%d", number_of_controllers);
3331 h->ctlr = number_of_controllers;
3332 number_of_controllers++;
3333 h->pdev = pdev;
3334
3335 /* configure PCI DMA stuff */
3336 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
3337 dac = 1;
3338 else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
3339 dac = 0;
3340 else {
3341 dev_err(&pdev->dev, "no suitable DMA available\n");
3342 goto clean1;
3343 }
3344
3345 /* make sure the board interrupts are off */
3346 h->access.set_intr_mask(h, HPSA_INTR_OFF);
3347 if (request_irq(h->intr[SIMPLE_MODE_INT], do_hpsa_intr,
3348 IRQF_DISABLED | IRQF_SHARED, h->devname, h)) {
3349 dev_err(&pdev->dev, "unable to get irq %d for %s\n",
3350 h->intr[SIMPLE_MODE_INT], h->devname);
3351 goto clean2;
3352 }
3353
3354 dev_info(&pdev->dev, "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n",
3355 h->devname, pdev->device, pci_name(pdev),
3356 h->intr[SIMPLE_MODE_INT], dac ? "" : " not");
3357
3358 h->cmd_pool_bits =
3359 kmalloc(((h->nr_cmds + BITS_PER_LONG -
3360 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL);
3361 h->cmd_pool = pci_alloc_consistent(h->pdev,
3362 h->nr_cmds * sizeof(*h->cmd_pool),
3363 &(h->cmd_pool_dhandle));
3364 h->errinfo_pool = pci_alloc_consistent(h->pdev,
3365 h->nr_cmds * sizeof(*h->errinfo_pool),
3366 &(h->errinfo_pool_dhandle));
3367 if ((h->cmd_pool_bits == NULL)
3368 || (h->cmd_pool == NULL)
3369 || (h->errinfo_pool == NULL)) {
3370 dev_err(&pdev->dev, "out of memory");
3371 goto clean4;
3372 }
3373 spin_lock_init(&h->lock);
3374
3375 pci_set_drvdata(pdev, h);
3376 memset(h->cmd_pool_bits, 0,
3377 ((h->nr_cmds + BITS_PER_LONG -
3378 1) / BITS_PER_LONG) * sizeof(unsigned long));
3379
3380 hpsa_scsi_setup(h);
3381
3382 /* Turn the interrupts on so we can service requests */
3383 h->access.set_intr_mask(h, HPSA_INTR_ON);
3384
3385 hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */
3386 h->busy_initializing = 0;
3387 return 1;
3388
3389clean4:
3390 kfree(h->cmd_pool_bits);
3391 if (h->cmd_pool)
3392 pci_free_consistent(h->pdev,
3393 h->nr_cmds * sizeof(struct CommandList),
3394 h->cmd_pool, h->cmd_pool_dhandle);
3395 if (h->errinfo_pool)
3396 pci_free_consistent(h->pdev,
3397 h->nr_cmds * sizeof(struct ErrorInfo),
3398 h->errinfo_pool,
3399 h->errinfo_pool_dhandle);
3400 free_irq(h->intr[SIMPLE_MODE_INT], h);
3401clean2:
3402clean1:
3403 h->busy_initializing = 0;
3404 kfree(h);
3405 return -1;
3406}
3407
3408static void hpsa_flush_cache(struct ctlr_info *h)
3409{
3410 char *flush_buf;
3411 struct CommandList *c;
3412
3413 flush_buf = kzalloc(4, GFP_KERNEL);
3414 if (!flush_buf)
3415 return;
3416
3417 c = cmd_special_alloc(h);
3418 if (!c) {
3419 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
3420 goto out_of_memory;
3421 }
3422 fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0,
3423 RAID_CTLR_LUNID, TYPE_CMD);
3424 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_TODEVICE);
3425 if (c->err_info->CommandStatus != 0)
3426 dev_warn(&h->pdev->dev,
3427 "error flushing cache on controller\n");
3428 cmd_special_free(h, c);
3429out_of_memory:
3430 kfree(flush_buf);
3431}
3432
3433static void hpsa_shutdown(struct pci_dev *pdev)
3434{
3435 struct ctlr_info *h;
3436
3437 h = pci_get_drvdata(pdev);
3438 /* Turn board interrupts off and send the flush cache command
3439 * sendcmd will turn off interrupt, and send the flush...
3440 * To write all data in the battery backed cache to disks
3441 */
3442 hpsa_flush_cache(h);
3443 h->access.set_intr_mask(h, HPSA_INTR_OFF);
3444 free_irq(h->intr[2], h);
3445#ifdef CONFIG_PCI_MSI
3446 if (h->msix_vector)
3447 pci_disable_msix(h->pdev);
3448 else if (h->msi_vector)
3449 pci_disable_msi(h->pdev);
3450#endif /* CONFIG_PCI_MSI */
3451}
3452
3453static void __devexit hpsa_remove_one(struct pci_dev *pdev)
3454{
3455 struct ctlr_info *h;
3456
3457 if (pci_get_drvdata(pdev) == NULL) {
3458 dev_err(&pdev->dev, "unable to remove device \n");
3459 return;
3460 }
3461 h = pci_get_drvdata(pdev);
3462 mutex_lock(&h->busy_shutting_down);
3463 remove_from_scan_list(h);
3464 hpsa_unregister_scsi(h); /* unhook from SCSI subsystem */
3465 hpsa_shutdown(pdev);
3466 iounmap(h->vaddr);
3467 pci_free_consistent(h->pdev,
3468 h->nr_cmds * sizeof(struct CommandList),
3469 h->cmd_pool, h->cmd_pool_dhandle);
3470 pci_free_consistent(h->pdev,
3471 h->nr_cmds * sizeof(struct ErrorInfo),
3472 h->errinfo_pool, h->errinfo_pool_dhandle);
3473 kfree(h->cmd_pool_bits);
3474 /*
3475 * Deliberately omit pci_disable_device(): it does something nasty to
3476 * Smart Array controllers that pci_enable_device does not undo
3477 */
3478 pci_release_regions(pdev);
3479 pci_set_drvdata(pdev, NULL);
3480 mutex_unlock(&h->busy_shutting_down);
3481 kfree(h);
3482}
3483
3484static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
3485 __attribute__((unused)) pm_message_t state)
3486{
3487 return -ENOSYS;
3488}
3489
3490static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
3491{
3492 return -ENOSYS;
3493}
3494
3495static struct pci_driver hpsa_pci_driver = {
3496 .name = "hpsa",
3497 .probe = hpsa_init_one,
3498 .remove = __devexit_p(hpsa_remove_one),
3499 .id_table = hpsa_pci_device_id, /* id_table */
3500 .shutdown = hpsa_shutdown,
3501 .suspend = hpsa_suspend,
3502 .resume = hpsa_resume,
3503};
3504
3505/*
3506 * This is it. Register the PCI driver information for the cards we control
3507 * the OS will call our registered routines when it finds one of our cards.
3508 */
3509static int __init hpsa_init(void)
3510{
3511 int err;
3512 /* Start the scan thread */
3513 hpsa_scan_thread = kthread_run(hpsa_scan_func, NULL, "hpsa_scan");
3514 if (IS_ERR(hpsa_scan_thread)) {
3515 err = PTR_ERR(hpsa_scan_thread);
3516 return -ENODEV;
3517 }
3518 err = pci_register_driver(&hpsa_pci_driver);
3519 if (err)
3520 kthread_stop(hpsa_scan_thread);
3521 return err;
3522}
3523
3524static void __exit hpsa_cleanup(void)
3525{
3526 pci_unregister_driver(&hpsa_pci_driver);
3527 kthread_stop(hpsa_scan_thread);
3528}
3529
3530module_init(hpsa_init);
3531module_exit(hpsa_cleanup);
diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h
new file mode 100644
index 000000000000..6bd1949144b5
--- /dev/null
+++ b/drivers/scsi/hpsa.h
@@ -0,0 +1,273 @@
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#ifndef HPSA_H
22#define HPSA_H
23
24#include <scsi/scsicam.h>
25
26#define IO_OK 0
27#define IO_ERROR 1
28
29struct ctlr_info;
30
31struct access_method {
32 void (*submit_command)(struct ctlr_info *h,
33 struct CommandList *c);
34 void (*set_intr_mask)(struct ctlr_info *h, unsigned long val);
35 unsigned long (*fifo_full)(struct ctlr_info *h);
36 unsigned long (*intr_pending)(struct ctlr_info *h);
37 unsigned long (*command_completed)(struct ctlr_info *h);
38};
39
40struct hpsa_scsi_dev_t {
41 int devtype;
42 int bus, target, lun; /* as presented to the OS */
43 unsigned char scsi3addr[8]; /* as presented to the HW */
44#define RAID_CTLR_LUNID "\0\0\0\0\0\0\0\0"
45 unsigned char device_id[16]; /* from inquiry pg. 0x83 */
46 unsigned char vendor[8]; /* bytes 8-15 of inquiry data */
47 unsigned char model[16]; /* bytes 16-31 of inquiry data */
48 unsigned char revision[4]; /* bytes 32-35 of inquiry data */
49 unsigned char raid_level; /* from inquiry page 0xC1 */
50};
51
52struct ctlr_info {
53 int ctlr;
54 char devname[8];
55 char *product_name;
56 char firm_ver[4]; /* Firmware version */
57 struct pci_dev *pdev;
58 __u32 board_id;
59 void __iomem *vaddr;
60 unsigned long paddr;
61 int nr_cmds; /* Number of commands allowed on this controller */
62 struct CfgTable __iomem *cfgtable;
63 int interrupts_enabled;
64 int major;
65 int max_commands;
66 int commands_outstanding;
67 int max_outstanding; /* Debug */
68 int usage_count; /* number of opens all all minor devices */
69# define DOORBELL_INT 0
70# define PERF_MODE_INT 1
71# define SIMPLE_MODE_INT 2
72# define MEMQ_MODE_INT 3
73 unsigned int intr[4];
74 unsigned int msix_vector;
75 unsigned int msi_vector;
76 struct access_method access;
77
78 /* queue and queue Info */
79 struct hlist_head reqQ;
80 struct hlist_head cmpQ;
81 unsigned int Qdepth;
82 unsigned int maxQsinceinit;
83 unsigned int maxSG;
84 spinlock_t lock;
85
86 /* pointers to command and error info pool */
87 struct CommandList *cmd_pool;
88 dma_addr_t cmd_pool_dhandle;
89 struct ErrorInfo *errinfo_pool;
90 dma_addr_t errinfo_pool_dhandle;
91 unsigned long *cmd_pool_bits;
92 int nr_allocs;
93 int nr_frees;
94 int busy_initializing;
95 int busy_scanning;
96 struct mutex busy_shutting_down;
97 struct list_head scan_list;
98 struct completion scan_wait;
99
100 struct Scsi_Host *scsi_host;
101 spinlock_t devlock; /* to protect hba[ctlr]->dev[]; */
102 int ndevices; /* number of used elements in .dev[] array. */
103#define HPSA_MAX_SCSI_DEVS_PER_HBA 256
104 struct hpsa_scsi_dev_t *dev[HPSA_MAX_SCSI_DEVS_PER_HBA];
105};
106#define HPSA_ABORT_MSG 0
107#define HPSA_DEVICE_RESET_MSG 1
108#define HPSA_BUS_RESET_MSG 2
109#define HPSA_HOST_RESET_MSG 3
110#define HPSA_MSG_SEND_RETRY_LIMIT 10
111#define HPSA_MSG_SEND_RETRY_INTERVAL_MSECS 1000
112
113/* Maximum time in seconds driver will wait for command completions
114 * when polling before giving up.
115 */
116#define HPSA_MAX_POLL_TIME_SECS (20)
117
118/* During SCSI error recovery, HPSA_TUR_RETRY_LIMIT defines
119 * how many times to retry TEST UNIT READY on a device
120 * while waiting for it to become ready before giving up.
121 * HPSA_MAX_WAIT_INTERVAL_SECS is the max wait interval
122 * between sending TURs while waiting for a device
123 * to become ready.
124 */
125#define HPSA_TUR_RETRY_LIMIT (20)
126#define HPSA_MAX_WAIT_INTERVAL_SECS (30)
127
128/* HPSA_BOARD_READY_WAIT_SECS is how long to wait for a board
129 * to become ready, in seconds, before giving up on it.
130 * HPSA_BOARD_READY_POLL_INTERVAL_MSECS * is how long to wait
131 * between polling the board to see if it is ready, in
132 * milliseconds. HPSA_BOARD_READY_POLL_INTERVAL and
133 * HPSA_BOARD_READY_ITERATIONS are derived from those.
134 */
135#define HPSA_BOARD_READY_WAIT_SECS (120)
136#define HPSA_BOARD_READY_POLL_INTERVAL_MSECS (100)
137#define HPSA_BOARD_READY_POLL_INTERVAL \
138 ((HPSA_BOARD_READY_POLL_INTERVAL_MSECS * HZ) / 1000)
139#define HPSA_BOARD_READY_ITERATIONS \
140 ((HPSA_BOARD_READY_WAIT_SECS * 1000) / \
141 HPSA_BOARD_READY_POLL_INTERVAL_MSECS)
142#define HPSA_POST_RESET_PAUSE_MSECS (3000)
143#define HPSA_POST_RESET_NOOP_RETRIES (12)
144
145/* Defining the diffent access_menthods */
146/*
147 * Memory mapped FIFO interface (SMART 53xx cards)
148 */
149#define SA5_DOORBELL 0x20
150#define SA5_REQUEST_PORT_OFFSET 0x40
151#define SA5_REPLY_INTR_MASK_OFFSET 0x34
152#define SA5_REPLY_PORT_OFFSET 0x44
153#define SA5_INTR_STATUS 0x30
154#define SA5_SCRATCHPAD_OFFSET 0xB0
155
156#define SA5_CTCFG_OFFSET 0xB4
157#define SA5_CTMEM_OFFSET 0xB8
158
159#define SA5_INTR_OFF 0x08
160#define SA5B_INTR_OFF 0x04
161#define SA5_INTR_PENDING 0x08
162#define SA5B_INTR_PENDING 0x04
163#define FIFO_EMPTY 0xffffffff
164#define HPSA_FIRMWARE_READY 0xffff0000 /* value in scratchpad register */
165
166#define HPSA_ERROR_BIT 0x02
167#define HPSA_TAG_CONTAINS_INDEX(tag) ((tag) & 0x04)
168#define HPSA_TAG_TO_INDEX(tag) ((tag) >> 3)
169#define HPSA_TAG_DISCARD_ERROR_BITS(tag) ((tag) & ~3)
170
171#define HPSA_INTR_ON 1
172#define HPSA_INTR_OFF 0
173/*
174 Send the command to the hardware
175*/
176static void SA5_submit_command(struct ctlr_info *h,
177 struct CommandList *c)
178{
179#ifdef HPSA_DEBUG
180 printk(KERN_WARNING "hpsa: Sending %x - down to controller\n",
181 c->busaddr);
182#endif /* HPSA_DEBUG */
183 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
184 h->commands_outstanding++;
185 if (h->commands_outstanding > h->max_outstanding)
186 h->max_outstanding = h->commands_outstanding;
187}
188
189/*
190 * This card is the opposite of the other cards.
191 * 0 turns interrupts on...
192 * 0x08 turns them off...
193 */
194static void SA5_intr_mask(struct ctlr_info *h, unsigned long val)
195{
196 if (val) { /* Turn interrupts on */
197 h->interrupts_enabled = 1;
198 writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
199 } else { /* Turn them off */
200 h->interrupts_enabled = 0;
201 writel(SA5_INTR_OFF,
202 h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
203 }
204}
205/*
206 * Returns true if fifo is full.
207 *
208 */
209static unsigned long SA5_fifo_full(struct ctlr_info *h)
210{
211 if (h->commands_outstanding >= h->max_commands)
212 return 1;
213 else
214 return 0;
215
216}
217/*
218 * returns value read from hardware.
219 * returns FIFO_EMPTY if there is nothing to read
220 */
221static unsigned long SA5_completed(struct ctlr_info *h)
222{
223 unsigned long register_value
224 = readl(h->vaddr + SA5_REPLY_PORT_OFFSET);
225
226 if (register_value != FIFO_EMPTY)
227 h->commands_outstanding--;
228
229#ifdef HPSA_DEBUG
230 if (register_value != FIFO_EMPTY)
231 printk(KERN_INFO "hpsa: Read %lx back from board\n",
232 register_value);
233 else
234 printk(KERN_INFO "hpsa: FIFO Empty read\n");
235#endif
236
237 return register_value;
238}
239/*
240 * Returns true if an interrupt is pending..
241 */
242static unsigned long SA5_intr_pending(struct ctlr_info *h)
243{
244 unsigned long register_value =
245 readl(h->vaddr + SA5_INTR_STATUS);
246#ifdef HPSA_DEBUG
247 printk(KERN_INFO "hpsa: intr_pending %lx\n", register_value);
248#endif /* HPSA_DEBUG */
249 if (register_value & SA5_INTR_PENDING)
250 return 1;
251 return 0 ;
252}
253
254
255static struct access_method SA5_access = {
256 SA5_submit_command,
257 SA5_intr_mask,
258 SA5_fifo_full,
259 SA5_intr_pending,
260 SA5_completed,
261};
262
263struct board_type {
264 __u32 board_id;
265 char *product_name;
266 struct access_method *access;
267};
268
269
270/* end of old hpsa_scsi.h file */
271
272#endif /* HPSA_H */
273
diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h
new file mode 100644
index 000000000000..12d71387ed9a
--- /dev/null
+++ b/drivers/scsi/hpsa_cmd.h
@@ -0,0 +1,326 @@
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#ifndef HPSA_CMD_H
22#define HPSA_CMD_H
23
24/* general boundary defintions */
25#define SENSEINFOBYTES 32 /* may vary between hbas */
26#define MAXSGENTRIES 31
27#define MAXREPLYQS 256
28
29/* Command Status value */
30#define CMD_SUCCESS 0x0000
31#define CMD_TARGET_STATUS 0x0001
32#define CMD_DATA_UNDERRUN 0x0002
33#define CMD_DATA_OVERRUN 0x0003
34#define CMD_INVALID 0x0004
35#define CMD_PROTOCOL_ERR 0x0005
36#define CMD_HARDWARE_ERR 0x0006
37#define CMD_CONNECTION_LOST 0x0007
38#define CMD_ABORTED 0x0008
39#define CMD_ABORT_FAILED 0x0009
40#define CMD_UNSOLICITED_ABORT 0x000A
41#define CMD_TIMEOUT 0x000B
42#define CMD_UNABORTABLE 0x000C
43
44/* Unit Attentions ASC's as defined for the MSA2012sa */
45#define POWER_OR_RESET 0x29
46#define STATE_CHANGED 0x2a
47#define UNIT_ATTENTION_CLEARED 0x2f
48#define LUN_FAILED 0x3e
49#define REPORT_LUNS_CHANGED 0x3f
50
51/* Unit Attentions ASCQ's as defined for the MSA2012sa */
52
53 /* These ASCQ's defined for ASC = POWER_OR_RESET */
54#define POWER_ON_RESET 0x00
55#define POWER_ON_REBOOT 0x01
56#define SCSI_BUS_RESET 0x02
57#define MSA_TARGET_RESET 0x03
58#define CONTROLLER_FAILOVER 0x04
59#define TRANSCEIVER_SE 0x05
60#define TRANSCEIVER_LVD 0x06
61
62 /* These ASCQ's defined for ASC = STATE_CHANGED */
63#define RESERVATION_PREEMPTED 0x03
64#define ASYM_ACCESS_CHANGED 0x06
65#define LUN_CAPACITY_CHANGED 0x09
66
67/* transfer direction */
68#define XFER_NONE 0x00
69#define XFER_WRITE 0x01
70#define XFER_READ 0x02
71#define XFER_RSVD 0x03
72
73/* task attribute */
74#define ATTR_UNTAGGED 0x00
75#define ATTR_SIMPLE 0x04
76#define ATTR_HEADOFQUEUE 0x05
77#define ATTR_ORDERED 0x06
78#define ATTR_ACA 0x07
79
80/* cdb type */
81#define TYPE_CMD 0x00
82#define TYPE_MSG 0x01
83
84/* config space register offsets */
85#define CFG_VENDORID 0x00
86#define CFG_DEVICEID 0x02
87#define CFG_I2OBAR 0x10
88#define CFG_MEM1BAR 0x14
89
90/* i2o space register offsets */
91#define I2O_IBDB_SET 0x20
92#define I2O_IBDB_CLEAR 0x70
93#define I2O_INT_STATUS 0x30
94#define I2O_INT_MASK 0x34
95#define I2O_IBPOST_Q 0x40
96#define I2O_OBPOST_Q 0x44
97#define I2O_DMA1_CFG 0x214
98
99/* Configuration Table */
100#define CFGTBL_ChangeReq 0x00000001l
101#define CFGTBL_AccCmds 0x00000001l
102
103#define CFGTBL_Trans_Simple 0x00000002l
104
105#define CFGTBL_BusType_Ultra2 0x00000001l
106#define CFGTBL_BusType_Ultra3 0x00000002l
107#define CFGTBL_BusType_Fibre1G 0x00000100l
108#define CFGTBL_BusType_Fibre2G 0x00000200l
109struct vals32 {
110 __u32 lower;
111 __u32 upper;
112};
113
114union u64bit {
115 struct vals32 val32;
116 __u64 val;
117};
118
119/* FIXME this is a per controller value (barf!) */
120#define HPSA_MAX_TARGETS_PER_CTLR 16
121#define HPSA_MAX_LUN 256
122#define HPSA_MAX_PHYS_LUN 1024
123
124/* SCSI-3 Commands */
125#pragma pack(1)
126
127#define HPSA_INQUIRY 0x12
128struct InquiryData {
129 __u8 data_byte[36];
130};
131
132#define HPSA_REPORT_LOG 0xc2 /* Report Logical LUNs */
133#define HPSA_REPORT_PHYS 0xc3 /* Report Physical LUNs */
134struct ReportLUNdata {
135 __u8 LUNListLength[4];
136 __u32 reserved;
137 __u8 LUN[HPSA_MAX_LUN][8];
138};
139
140struct ReportExtendedLUNdata {
141 __u8 LUNListLength[4];
142 __u8 extended_response_flag;
143 __u8 reserved[3];
144 __u8 LUN[HPSA_MAX_LUN][24];
145};
146
147struct SenseSubsystem_info {
148 __u8 reserved[36];
149 __u8 portname[8];
150 __u8 reserved1[1108];
151};
152
153#define HPSA_READ_CAPACITY 0x25 /* Read Capacity */
154struct ReadCapdata {
155 __u8 total_size[4]; /* Total size in blocks */
156 __u8 block_size[4]; /* Size of blocks in bytes */
157};
158
159#if 0
160/* 12 byte commands not implemented in firmware yet. */
161#define HPSA_READ 0xa8
162#define HPSA_WRITE 0xaa
163#endif
164
165#define HPSA_READ 0x28 /* Read(10) */
166#define HPSA_WRITE 0x2a /* Write(10) */
167
168/* BMIC commands */
169#define BMIC_READ 0x26
170#define BMIC_WRITE 0x27
171#define BMIC_CACHE_FLUSH 0xc2
172#define HPSA_CACHE_FLUSH 0x01 /* C2 was already being used by HPSA */
173
174/* Command List Structure */
175union SCSI3Addr {
176 struct {
177 __u8 Dev;
178 __u8 Bus:6;
179 __u8 Mode:2; /* b00 */
180 } PeripDev;
181 struct {
182 __u8 DevLSB;
183 __u8 DevMSB:6;
184 __u8 Mode:2; /* b01 */
185 } LogDev;
186 struct {
187 __u8 Dev:5;
188 __u8 Bus:3;
189 __u8 Targ:6;
190 __u8 Mode:2; /* b10 */
191 } LogUnit;
192};
193
194struct PhysDevAddr {
195 __u32 TargetId:24;
196 __u32 Bus:6;
197 __u32 Mode:2;
198 /* 2 level target device addr */
199 union SCSI3Addr Target[2];
200};
201
202struct LogDevAddr {
203 __u32 VolId:30;
204 __u32 Mode:2;
205 __u8 reserved[4];
206};
207
208union LUNAddr {
209 __u8 LunAddrBytes[8];
210 union SCSI3Addr SCSI3Lun[4];
211 struct PhysDevAddr PhysDev;
212 struct LogDevAddr LogDev;
213};
214
215struct CommandListHeader {
216 __u8 ReplyQueue;
217 __u8 SGList;
218 __u16 SGTotal;
219 struct vals32 Tag;
220 union LUNAddr LUN;
221};
222
223struct RequestBlock {
224 __u8 CDBLen;
225 struct {
226 __u8 Type:3;
227 __u8 Attribute:3;
228 __u8 Direction:2;
229 } Type;
230 __u16 Timeout;
231 __u8 CDB[16];
232};
233
234struct ErrDescriptor {
235 struct vals32 Addr;
236 __u32 Len;
237};
238
239struct SGDescriptor {
240 struct vals32 Addr;
241 __u32 Len;
242 __u32 Ext;
243};
244
245union MoreErrInfo {
246 struct {
247 __u8 Reserved[3];
248 __u8 Type;
249 __u32 ErrorInfo;
250 } Common_Info;
251 struct {
252 __u8 Reserved[2];
253 __u8 offense_size; /* size of offending entry */
254 __u8 offense_num; /* byte # of offense 0-base */
255 __u32 offense_value;
256 } Invalid_Cmd;
257};
258struct ErrorInfo {
259 __u8 ScsiStatus;
260 __u8 SenseLen;
261 __u16 CommandStatus;
262 __u32 ResidualCnt;
263 union MoreErrInfo MoreErrInfo;
264 __u8 SenseInfo[SENSEINFOBYTES];
265};
266/* Command types */
267#define CMD_IOCTL_PEND 0x01
268#define CMD_SCSI 0x03
269
270struct ctlr_info; /* defined in hpsa.h */
271/* The size of this structure needs to be divisible by 8
272 * od on all architectures, because the controller uses 2
273 * lower bits of the address, and the driver uses 1 lower
274 * bit (3 bits total.)
275 */
276struct CommandList {
277 struct CommandListHeader Header;
278 struct RequestBlock Request;
279 struct ErrDescriptor ErrDesc;
280 struct SGDescriptor SG[MAXSGENTRIES];
281 /* information associated with the command */
282 __u32 busaddr; /* physical addr of this record */
283 struct ErrorInfo *err_info; /* pointer to the allocated mem */
284 struct ctlr_info *h;
285 int cmd_type;
286 long cmdindex;
287 struct hlist_node list;
288 struct CommandList *prev;
289 struct CommandList *next;
290 struct request *rq;
291 struct completion *waiting;
292 int retry_count;
293 void *scsi_cmd;
294};
295
296/* Configuration Table Structure */
297struct HostWrite {
298 __u32 TransportRequest;
299 __u32 Reserved;
300 __u32 CoalIntDelay;
301 __u32 CoalIntCount;
302};
303
304struct CfgTable {
305 __u8 Signature[4];
306 __u32 SpecValence;
307 __u32 TransportSupport;
308 __u32 TransportActive;
309 struct HostWrite HostWrite;
310 __u32 CmdsOutMax;
311 __u32 BusTypes;
312 __u32 Reserved;
313 __u8 ServerName[16];
314 __u32 HeartBeat;
315 __u32 SCSI_Prefetch;
316};
317
318struct hpsa_pci_info {
319 unsigned char bus;
320 unsigned char dev_fn;
321 unsigned short domain;
322 __u32 board_id;
323};
324
325#pragma pack()
326#endif /* HPSA_CMD_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-10 04:26:19 -0500