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edd16368 SC |
1 | /* |
2 | * Disk Array driver for HP Smart Array SAS controllers | |
3 | * Copyright 2000, 2009 Hewlett-Packard Development Company, L.P. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; version 2 of the License. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
12 | * NON INFRINGEMENT. See the GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
17 | * | |
18 | * Questions/Comments/Bugfixes to iss_storagedev@hp.com | |
19 | * | |
20 | */ | |
21 | ||
22 | #include <linux/module.h> | |
23 | #include <linux/interrupt.h> | |
24 | #include <linux/types.h> | |
25 | #include <linux/pci.h> | |
26 | #include <linux/kernel.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/delay.h> | |
29 | #include <linux/fs.h> | |
30 | #include <linux/timer.h> | |
31 | #include <linux/seq_file.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/spinlock.h> | |
edd16368 SC |
34 | #include <linux/compat.h> |
35 | #include <linux/blktrace_api.h> | |
36 | #include <linux/uaccess.h> | |
37 | #include <linux/io.h> | |
38 | #include <linux/dma-mapping.h> | |
39 | #include <linux/completion.h> | |
40 | #include <linux/moduleparam.h> | |
41 | #include <scsi/scsi.h> | |
42 | #include <scsi/scsi_cmnd.h> | |
43 | #include <scsi/scsi_device.h> | |
44 | #include <scsi/scsi_host.h> | |
667e23d4 | 45 | #include <scsi/scsi_tcq.h> |
edd16368 SC |
46 | #include <linux/cciss_ioctl.h> |
47 | #include <linux/string.h> | |
48 | #include <linux/bitmap.h> | |
60063497 | 49 | #include <linux/atomic.h> |
edd16368 | 50 | #include <linux/kthread.h> |
a0c12413 | 51 | #include <linux/jiffies.h> |
edd16368 SC |
52 | #include "hpsa_cmd.h" |
53 | #include "hpsa.h" | |
54 | ||
55 | /* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */ | |
31468401 | 56 | #define HPSA_DRIVER_VERSION "2.0.2-1" |
edd16368 SC |
57 | #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")" |
58 | ||
59 | /* How long to wait (in milliseconds) for board to go into simple mode */ | |
60 | #define MAX_CONFIG_WAIT 30000 | |
61 | #define MAX_IOCTL_CONFIG_WAIT 1000 | |
62 | ||
63 | /*define how many times we will try a command because of bus resets */ | |
64 | #define MAX_CMD_RETRIES 3 | |
65 | ||
66 | /* Embedded module documentation macros - see modules.h */ | |
67 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
68 | MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \ | |
69 | HPSA_DRIVER_VERSION); | |
70 | MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers"); | |
71 | MODULE_VERSION(HPSA_DRIVER_VERSION); | |
72 | MODULE_LICENSE("GPL"); | |
73 | ||
74 | static int hpsa_allow_any; | |
75 | module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR); | |
76 | MODULE_PARM_DESC(hpsa_allow_any, | |
77 | "Allow hpsa driver to access unknown HP Smart Array hardware"); | |
02ec19c8 SC |
78 | static int hpsa_simple_mode; |
79 | module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR); | |
80 | MODULE_PARM_DESC(hpsa_simple_mode, | |
81 | "Use 'simple mode' rather than 'performant mode'"); | |
edd16368 SC |
82 | |
83 | /* define the PCI info for the cards we can control */ | |
84 | static const struct pci_device_id hpsa_pci_device_id[] = { | |
edd16368 SC |
85 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, |
86 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, | |
87 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, | |
88 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, | |
89 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, | |
90 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324a}, | |
91 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324b}, | |
f8b01eb9 | 92 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233}, |
9143a961 | 93 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3350}, |
94 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3351}, | |
95 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3352}, | |
96 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3353}, | |
97 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3354}, | |
98 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3355}, | |
99 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3356}, | |
7c03b870 | 100 | {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, |
6798cc0a | 101 | PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, |
edd16368 SC |
102 | {0,} |
103 | }; | |
104 | ||
105 | MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id); | |
106 | ||
107 | /* board_id = Subsystem Device ID & Vendor ID | |
108 | * product = Marketing Name for the board | |
109 | * access = Address of the struct of function pointers | |
110 | */ | |
111 | static struct board_type products[] = { | |
edd16368 SC |
112 | {0x3241103C, "Smart Array P212", &SA5_access}, |
113 | {0x3243103C, "Smart Array P410", &SA5_access}, | |
114 | {0x3245103C, "Smart Array P410i", &SA5_access}, | |
115 | {0x3247103C, "Smart Array P411", &SA5_access}, | |
116 | {0x3249103C, "Smart Array P812", &SA5_access}, | |
117 | {0x324a103C, "Smart Array P712m", &SA5_access}, | |
118 | {0x324b103C, "Smart Array P711m", &SA5_access}, | |
9143a961 | 119 | {0x3350103C, "Smart Array", &SA5_access}, |
120 | {0x3351103C, "Smart Array", &SA5_access}, | |
121 | {0x3352103C, "Smart Array", &SA5_access}, | |
122 | {0x3353103C, "Smart Array", &SA5_access}, | |
123 | {0x3354103C, "Smart Array", &SA5_access}, | |
124 | {0x3355103C, "Smart Array", &SA5_access}, | |
125 | {0x3356103C, "Smart Array", &SA5_access}, | |
edd16368 SC |
126 | {0xFFFF103C, "Unknown Smart Array", &SA5_access}, |
127 | }; | |
128 | ||
129 | static int number_of_controllers; | |
130 | ||
a0c12413 SC |
131 | static struct list_head hpsa_ctlr_list = LIST_HEAD_INIT(hpsa_ctlr_list); |
132 | static spinlock_t lockup_detector_lock; | |
133 | static struct task_struct *hpsa_lockup_detector; | |
134 | ||
10f66018 SC |
135 | static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id); |
136 | static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id); | |
edd16368 SC |
137 | static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg); |
138 | static void start_io(struct ctlr_info *h); | |
139 | ||
140 | #ifdef CONFIG_COMPAT | |
141 | static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg); | |
142 | #endif | |
143 | ||
144 | static void cmd_free(struct ctlr_info *h, struct CommandList *c); | |
145 | static void cmd_special_free(struct ctlr_info *h, struct CommandList *c); | |
146 | static struct CommandList *cmd_alloc(struct ctlr_info *h); | |
147 | static struct CommandList *cmd_special_alloc(struct ctlr_info *h); | |
01a02ffc SC |
148 | static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, |
149 | void *buff, size_t size, u8 page_code, unsigned char *scsi3addr, | |
edd16368 SC |
150 | int cmd_type); |
151 | ||
f281233d | 152 | static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd); |
a08a8471 SC |
153 | static void hpsa_scan_start(struct Scsi_Host *); |
154 | static int hpsa_scan_finished(struct Scsi_Host *sh, | |
155 | unsigned long elapsed_time); | |
667e23d4 SC |
156 | static int hpsa_change_queue_depth(struct scsi_device *sdev, |
157 | int qdepth, int reason); | |
edd16368 SC |
158 | |
159 | static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd); | |
160 | static int hpsa_slave_alloc(struct scsi_device *sdev); | |
161 | static void hpsa_slave_destroy(struct scsi_device *sdev); | |
162 | ||
edd16368 | 163 | static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno); |
edd16368 SC |
164 | static int check_for_unit_attention(struct ctlr_info *h, |
165 | struct CommandList *c); | |
166 | static void check_ioctl_unit_attention(struct ctlr_info *h, | |
167 | struct CommandList *c); | |
303932fd DB |
168 | /* performant mode helper functions */ |
169 | static void calc_bucket_map(int *bucket, int num_buckets, | |
170 | int nsgs, int *bucket_map); | |
7136f9a7 | 171 | static __devinit void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h); |
303932fd | 172 | static inline u32 next_command(struct ctlr_info *h); |
1df8552a SC |
173 | static int __devinit hpsa_find_cfg_addrs(struct pci_dev *pdev, |
174 | void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, | |
175 | u64 *cfg_offset); | |
176 | static int __devinit hpsa_pci_find_memory_BAR(struct pci_dev *pdev, | |
177 | unsigned long *memory_bar); | |
18867659 | 178 | static int __devinit hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id); |
fe5389c8 SC |
179 | static int __devinit hpsa_wait_for_board_state(struct pci_dev *pdev, |
180 | void __iomem *vaddr, int wait_for_ready); | |
181 | #define BOARD_NOT_READY 0 | |
182 | #define BOARD_READY 1 | |
edd16368 | 183 | |
edd16368 SC |
184 | static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev) |
185 | { | |
186 | unsigned long *priv = shost_priv(sdev->host); | |
187 | return (struct ctlr_info *) *priv; | |
188 | } | |
189 | ||
a23513e8 SC |
190 | static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh) |
191 | { | |
192 | unsigned long *priv = shost_priv(sh); | |
193 | return (struct ctlr_info *) *priv; | |
194 | } | |
195 | ||
edd16368 SC |
196 | static int check_for_unit_attention(struct ctlr_info *h, |
197 | struct CommandList *c) | |
198 | { | |
199 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) | |
200 | return 0; | |
201 | ||
202 | switch (c->err_info->SenseInfo[12]) { | |
203 | case STATE_CHANGED: | |
204 | dev_warn(&h->pdev->dev, "hpsa%d: a state change " | |
205 | "detected, command retried\n", h->ctlr); | |
206 | break; | |
207 | case LUN_FAILED: | |
208 | dev_warn(&h->pdev->dev, "hpsa%d: LUN failure " | |
209 | "detected, action required\n", h->ctlr); | |
210 | break; | |
211 | case REPORT_LUNS_CHANGED: | |
212 | dev_warn(&h->pdev->dev, "hpsa%d: report LUN data " | |
31468401 | 213 | "changed, action required\n", h->ctlr); |
edd16368 | 214 | /* |
edd16368 SC |
215 | * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012. |
216 | */ | |
217 | break; | |
218 | case POWER_OR_RESET: | |
219 | dev_warn(&h->pdev->dev, "hpsa%d: a power on " | |
220 | "or device reset detected\n", h->ctlr); | |
221 | break; | |
222 | case UNIT_ATTENTION_CLEARED: | |
223 | dev_warn(&h->pdev->dev, "hpsa%d: unit attention " | |
224 | "cleared by another initiator\n", h->ctlr); | |
225 | break; | |
226 | default: | |
227 | dev_warn(&h->pdev->dev, "hpsa%d: unknown " | |
228 | "unit attention detected\n", h->ctlr); | |
229 | break; | |
230 | } | |
231 | return 1; | |
232 | } | |
233 | ||
234 | static ssize_t host_store_rescan(struct device *dev, | |
235 | struct device_attribute *attr, | |
236 | const char *buf, size_t count) | |
237 | { | |
238 | struct ctlr_info *h; | |
239 | struct Scsi_Host *shost = class_to_shost(dev); | |
a23513e8 | 240 | h = shost_to_hba(shost); |
31468401 | 241 | hpsa_scan_start(h->scsi_host); |
edd16368 SC |
242 | return count; |
243 | } | |
244 | ||
d28ce020 SC |
245 | static ssize_t host_show_firmware_revision(struct device *dev, |
246 | struct device_attribute *attr, char *buf) | |
247 | { | |
248 | struct ctlr_info *h; | |
249 | struct Scsi_Host *shost = class_to_shost(dev); | |
250 | unsigned char *fwrev; | |
251 | ||
252 | h = shost_to_hba(shost); | |
253 | if (!h->hba_inquiry_data) | |
254 | return 0; | |
255 | fwrev = &h->hba_inquiry_data[32]; | |
256 | return snprintf(buf, 20, "%c%c%c%c\n", | |
257 | fwrev[0], fwrev[1], fwrev[2], fwrev[3]); | |
258 | } | |
259 | ||
94a13649 SC |
260 | static ssize_t host_show_commands_outstanding(struct device *dev, |
261 | struct device_attribute *attr, char *buf) | |
262 | { | |
263 | struct Scsi_Host *shost = class_to_shost(dev); | |
264 | struct ctlr_info *h = shost_to_hba(shost); | |
265 | ||
266 | return snprintf(buf, 20, "%d\n", h->commands_outstanding); | |
267 | } | |
268 | ||
745a7a25 SC |
269 | static ssize_t host_show_transport_mode(struct device *dev, |
270 | struct device_attribute *attr, char *buf) | |
271 | { | |
272 | struct ctlr_info *h; | |
273 | struct Scsi_Host *shost = class_to_shost(dev); | |
274 | ||
275 | h = shost_to_hba(shost); | |
276 | return snprintf(buf, 20, "%s\n", | |
960a30e7 | 277 | h->transMethod & CFGTBL_Trans_Performant ? |
745a7a25 SC |
278 | "performant" : "simple"); |
279 | } | |
280 | ||
46380786 | 281 | /* List of controllers which cannot be hard reset on kexec with reset_devices */ |
941b1cda SC |
282 | static u32 unresettable_controller[] = { |
283 | 0x324a103C, /* Smart Array P712m */ | |
284 | 0x324b103C, /* SmartArray P711m */ | |
285 | 0x3223103C, /* Smart Array P800 */ | |
286 | 0x3234103C, /* Smart Array P400 */ | |
287 | 0x3235103C, /* Smart Array P400i */ | |
288 | 0x3211103C, /* Smart Array E200i */ | |
289 | 0x3212103C, /* Smart Array E200 */ | |
290 | 0x3213103C, /* Smart Array E200i */ | |
291 | 0x3214103C, /* Smart Array E200i */ | |
292 | 0x3215103C, /* Smart Array E200i */ | |
293 | 0x3237103C, /* Smart Array E500 */ | |
294 | 0x323D103C, /* Smart Array P700m */ | |
295 | 0x409C0E11, /* Smart Array 6400 */ | |
296 | 0x409D0E11, /* Smart Array 6400 EM */ | |
297 | }; | |
298 | ||
46380786 SC |
299 | /* List of controllers which cannot even be soft reset */ |
300 | static u32 soft_unresettable_controller[] = { | |
301 | /* Exclude 640x boards. These are two pci devices in one slot | |
302 | * which share a battery backed cache module. One controls the | |
303 | * cache, the other accesses the cache through the one that controls | |
304 | * it. If we reset the one controlling the cache, the other will | |
305 | * likely not be happy. Just forbid resetting this conjoined mess. | |
306 | * The 640x isn't really supported by hpsa anyway. | |
307 | */ | |
308 | 0x409C0E11, /* Smart Array 6400 */ | |
309 | 0x409D0E11, /* Smart Array 6400 EM */ | |
310 | }; | |
311 | ||
312 | static int ctlr_is_hard_resettable(u32 board_id) | |
941b1cda SC |
313 | { |
314 | int i; | |
315 | ||
316 | for (i = 0; i < ARRAY_SIZE(unresettable_controller); i++) | |
46380786 SC |
317 | if (unresettable_controller[i] == board_id) |
318 | return 0; | |
319 | return 1; | |
320 | } | |
321 | ||
322 | static int ctlr_is_soft_resettable(u32 board_id) | |
323 | { | |
324 | int i; | |
325 | ||
326 | for (i = 0; i < ARRAY_SIZE(soft_unresettable_controller); i++) | |
327 | if (soft_unresettable_controller[i] == board_id) | |
941b1cda SC |
328 | return 0; |
329 | return 1; | |
330 | } | |
331 | ||
46380786 SC |
332 | static int ctlr_is_resettable(u32 board_id) |
333 | { | |
334 | return ctlr_is_hard_resettable(board_id) || | |
335 | ctlr_is_soft_resettable(board_id); | |
336 | } | |
337 | ||
941b1cda SC |
338 | static ssize_t host_show_resettable(struct device *dev, |
339 | struct device_attribute *attr, char *buf) | |
340 | { | |
341 | struct ctlr_info *h; | |
342 | struct Scsi_Host *shost = class_to_shost(dev); | |
343 | ||
344 | h = shost_to_hba(shost); | |
46380786 | 345 | return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id)); |
941b1cda SC |
346 | } |
347 | ||
edd16368 SC |
348 | static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[]) |
349 | { | |
350 | return (scsi3addr[3] & 0xC0) == 0x40; | |
351 | } | |
352 | ||
353 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", | |
354 | "UNKNOWN" | |
355 | }; | |
356 | #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1) | |
357 | ||
358 | static ssize_t raid_level_show(struct device *dev, | |
359 | struct device_attribute *attr, char *buf) | |
360 | { | |
361 | ssize_t l = 0; | |
82a72c0a | 362 | unsigned char rlevel; |
edd16368 SC |
363 | struct ctlr_info *h; |
364 | struct scsi_device *sdev; | |
365 | struct hpsa_scsi_dev_t *hdev; | |
366 | unsigned long flags; | |
367 | ||
368 | sdev = to_scsi_device(dev); | |
369 | h = sdev_to_hba(sdev); | |
370 | spin_lock_irqsave(&h->lock, flags); | |
371 | hdev = sdev->hostdata; | |
372 | if (!hdev) { | |
373 | spin_unlock_irqrestore(&h->lock, flags); | |
374 | return -ENODEV; | |
375 | } | |
376 | ||
377 | /* Is this even a logical drive? */ | |
378 | if (!is_logical_dev_addr_mode(hdev->scsi3addr)) { | |
379 | spin_unlock_irqrestore(&h->lock, flags); | |
380 | l = snprintf(buf, PAGE_SIZE, "N/A\n"); | |
381 | return l; | |
382 | } | |
383 | ||
384 | rlevel = hdev->raid_level; | |
385 | spin_unlock_irqrestore(&h->lock, flags); | |
82a72c0a | 386 | if (rlevel > RAID_UNKNOWN) |
edd16368 SC |
387 | rlevel = RAID_UNKNOWN; |
388 | l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]); | |
389 | return l; | |
390 | } | |
391 | ||
392 | static ssize_t lunid_show(struct device *dev, | |
393 | struct device_attribute *attr, char *buf) | |
394 | { | |
395 | struct ctlr_info *h; | |
396 | struct scsi_device *sdev; | |
397 | struct hpsa_scsi_dev_t *hdev; | |
398 | unsigned long flags; | |
399 | unsigned char lunid[8]; | |
400 | ||
401 | sdev = to_scsi_device(dev); | |
402 | h = sdev_to_hba(sdev); | |
403 | spin_lock_irqsave(&h->lock, flags); | |
404 | hdev = sdev->hostdata; | |
405 | if (!hdev) { | |
406 | spin_unlock_irqrestore(&h->lock, flags); | |
407 | return -ENODEV; | |
408 | } | |
409 | memcpy(lunid, hdev->scsi3addr, sizeof(lunid)); | |
410 | spin_unlock_irqrestore(&h->lock, flags); | |
411 | return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
412 | lunid[0], lunid[1], lunid[2], lunid[3], | |
413 | lunid[4], lunid[5], lunid[6], lunid[7]); | |
414 | } | |
415 | ||
416 | static ssize_t unique_id_show(struct device *dev, | |
417 | struct device_attribute *attr, char *buf) | |
418 | { | |
419 | struct ctlr_info *h; | |
420 | struct scsi_device *sdev; | |
421 | struct hpsa_scsi_dev_t *hdev; | |
422 | unsigned long flags; | |
423 | unsigned char sn[16]; | |
424 | ||
425 | sdev = to_scsi_device(dev); | |
426 | h = sdev_to_hba(sdev); | |
427 | spin_lock_irqsave(&h->lock, flags); | |
428 | hdev = sdev->hostdata; | |
429 | if (!hdev) { | |
430 | spin_unlock_irqrestore(&h->lock, flags); | |
431 | return -ENODEV; | |
432 | } | |
433 | memcpy(sn, hdev->device_id, sizeof(sn)); | |
434 | spin_unlock_irqrestore(&h->lock, flags); | |
435 | return snprintf(buf, 16 * 2 + 2, | |
436 | "%02X%02X%02X%02X%02X%02X%02X%02X" | |
437 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", | |
438 | sn[0], sn[1], sn[2], sn[3], | |
439 | sn[4], sn[5], sn[6], sn[7], | |
440 | sn[8], sn[9], sn[10], sn[11], | |
441 | sn[12], sn[13], sn[14], sn[15]); | |
442 | } | |
443 | ||
3f5eac3a SC |
444 | static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL); |
445 | static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL); | |
446 | static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL); | |
447 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); | |
448 | static DEVICE_ATTR(firmware_revision, S_IRUGO, | |
449 | host_show_firmware_revision, NULL); | |
450 | static DEVICE_ATTR(commands_outstanding, S_IRUGO, | |
451 | host_show_commands_outstanding, NULL); | |
452 | static DEVICE_ATTR(transport_mode, S_IRUGO, | |
453 | host_show_transport_mode, NULL); | |
941b1cda SC |
454 | static DEVICE_ATTR(resettable, S_IRUGO, |
455 | host_show_resettable, NULL); | |
3f5eac3a SC |
456 | |
457 | static struct device_attribute *hpsa_sdev_attrs[] = { | |
458 | &dev_attr_raid_level, | |
459 | &dev_attr_lunid, | |
460 | &dev_attr_unique_id, | |
461 | NULL, | |
462 | }; | |
463 | ||
464 | static struct device_attribute *hpsa_shost_attrs[] = { | |
465 | &dev_attr_rescan, | |
466 | &dev_attr_firmware_revision, | |
467 | &dev_attr_commands_outstanding, | |
468 | &dev_attr_transport_mode, | |
941b1cda | 469 | &dev_attr_resettable, |
3f5eac3a SC |
470 | NULL, |
471 | }; | |
472 | ||
473 | static struct scsi_host_template hpsa_driver_template = { | |
474 | .module = THIS_MODULE, | |
475 | .name = "hpsa", | |
476 | .proc_name = "hpsa", | |
477 | .queuecommand = hpsa_scsi_queue_command, | |
478 | .scan_start = hpsa_scan_start, | |
479 | .scan_finished = hpsa_scan_finished, | |
480 | .change_queue_depth = hpsa_change_queue_depth, | |
481 | .this_id = -1, | |
482 | .use_clustering = ENABLE_CLUSTERING, | |
483 | .eh_device_reset_handler = hpsa_eh_device_reset_handler, | |
484 | .ioctl = hpsa_ioctl, | |
485 | .slave_alloc = hpsa_slave_alloc, | |
486 | .slave_destroy = hpsa_slave_destroy, | |
487 | #ifdef CONFIG_COMPAT | |
488 | .compat_ioctl = hpsa_compat_ioctl, | |
489 | #endif | |
490 | .sdev_attrs = hpsa_sdev_attrs, | |
491 | .shost_attrs = hpsa_shost_attrs, | |
c0d6a4d1 | 492 | .max_sectors = 8192, |
3f5eac3a SC |
493 | }; |
494 | ||
495 | ||
496 | /* Enqueuing and dequeuing functions for cmdlists. */ | |
497 | static inline void addQ(struct list_head *list, struct CommandList *c) | |
498 | { | |
499 | list_add_tail(&c->list, list); | |
500 | } | |
501 | ||
502 | static inline u32 next_command(struct ctlr_info *h) | |
503 | { | |
504 | u32 a; | |
505 | ||
506 | if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant))) | |
507 | return h->access.command_completed(h); | |
508 | ||
509 | if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) { | |
510 | a = *(h->reply_pool_head); /* Next cmd in ring buffer */ | |
511 | (h->reply_pool_head)++; | |
512 | h->commands_outstanding--; | |
513 | } else { | |
514 | a = FIFO_EMPTY; | |
515 | } | |
516 | /* Check for wraparound */ | |
517 | if (h->reply_pool_head == (h->reply_pool + h->max_commands)) { | |
518 | h->reply_pool_head = h->reply_pool; | |
519 | h->reply_pool_wraparound ^= 1; | |
520 | } | |
521 | return a; | |
522 | } | |
523 | ||
524 | /* set_performant_mode: Modify the tag for cciss performant | |
525 | * set bit 0 for pull model, bits 3-1 for block fetch | |
526 | * register number | |
527 | */ | |
528 | static void set_performant_mode(struct ctlr_info *h, struct CommandList *c) | |
529 | { | |
530 | if (likely(h->transMethod & CFGTBL_Trans_Performant)) | |
531 | c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); | |
532 | } | |
533 | ||
534 | static void enqueue_cmd_and_start_io(struct ctlr_info *h, | |
535 | struct CommandList *c) | |
536 | { | |
537 | unsigned long flags; | |
538 | ||
539 | set_performant_mode(h, c); | |
540 | spin_lock_irqsave(&h->lock, flags); | |
541 | addQ(&h->reqQ, c); | |
542 | h->Qdepth++; | |
543 | start_io(h); | |
544 | spin_unlock_irqrestore(&h->lock, flags); | |
545 | } | |
546 | ||
547 | static inline void removeQ(struct CommandList *c) | |
548 | { | |
549 | if (WARN_ON(list_empty(&c->list))) | |
550 | return; | |
551 | list_del_init(&c->list); | |
552 | } | |
553 | ||
554 | static inline int is_hba_lunid(unsigned char scsi3addr[]) | |
555 | { | |
556 | return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0; | |
557 | } | |
558 | ||
559 | static inline int is_scsi_rev_5(struct ctlr_info *h) | |
560 | { | |
561 | if (!h->hba_inquiry_data) | |
562 | return 0; | |
563 | if ((h->hba_inquiry_data[2] & 0x07) == 5) | |
564 | return 1; | |
565 | return 0; | |
566 | } | |
567 | ||
edd16368 SC |
568 | static int hpsa_find_target_lun(struct ctlr_info *h, |
569 | unsigned char scsi3addr[], int bus, int *target, int *lun) | |
570 | { | |
571 | /* finds an unused bus, target, lun for a new physical device | |
572 | * assumes h->devlock is held | |
573 | */ | |
574 | int i, found = 0; | |
cfe5badc | 575 | DECLARE_BITMAP(lun_taken, HPSA_MAX_DEVICES); |
edd16368 | 576 | |
cfe5badc | 577 | memset(&lun_taken[0], 0, HPSA_MAX_DEVICES >> 3); |
edd16368 SC |
578 | |
579 | for (i = 0; i < h->ndevices; i++) { | |
580 | if (h->dev[i]->bus == bus && h->dev[i]->target != -1) | |
581 | set_bit(h->dev[i]->target, lun_taken); | |
582 | } | |
583 | ||
cfe5badc | 584 | for (i = 0; i < HPSA_MAX_DEVICES; i++) { |
edd16368 SC |
585 | if (!test_bit(i, lun_taken)) { |
586 | /* *bus = 1; */ | |
587 | *target = i; | |
588 | *lun = 0; | |
589 | found = 1; | |
590 | break; | |
591 | } | |
592 | } | |
593 | return !found; | |
594 | } | |
595 | ||
596 | /* Add an entry into h->dev[] array. */ | |
597 | static int hpsa_scsi_add_entry(struct ctlr_info *h, int hostno, | |
598 | struct hpsa_scsi_dev_t *device, | |
599 | struct hpsa_scsi_dev_t *added[], int *nadded) | |
600 | { | |
601 | /* assumes h->devlock is held */ | |
602 | int n = h->ndevices; | |
603 | int i; | |
604 | unsigned char addr1[8], addr2[8]; | |
605 | struct hpsa_scsi_dev_t *sd; | |
606 | ||
cfe5badc | 607 | if (n >= HPSA_MAX_DEVICES) { |
edd16368 SC |
608 | dev_err(&h->pdev->dev, "too many devices, some will be " |
609 | "inaccessible.\n"); | |
610 | return -1; | |
611 | } | |
612 | ||
613 | /* physical devices do not have lun or target assigned until now. */ | |
614 | if (device->lun != -1) | |
615 | /* Logical device, lun is already assigned. */ | |
616 | goto lun_assigned; | |
617 | ||
618 | /* If this device a non-zero lun of a multi-lun device | |
619 | * byte 4 of the 8-byte LUN addr will contain the logical | |
620 | * unit no, zero otherise. | |
621 | */ | |
622 | if (device->scsi3addr[4] == 0) { | |
623 | /* This is not a non-zero lun of a multi-lun device */ | |
624 | if (hpsa_find_target_lun(h, device->scsi3addr, | |
625 | device->bus, &device->target, &device->lun) != 0) | |
626 | return -1; | |
627 | goto lun_assigned; | |
628 | } | |
629 | ||
630 | /* This is a non-zero lun of a multi-lun device. | |
631 | * Search through our list and find the device which | |
632 | * has the same 8 byte LUN address, excepting byte 4. | |
633 | * Assign the same bus and target for this new LUN. | |
634 | * Use the logical unit number from the firmware. | |
635 | */ | |
636 | memcpy(addr1, device->scsi3addr, 8); | |
637 | addr1[4] = 0; | |
638 | for (i = 0; i < n; i++) { | |
639 | sd = h->dev[i]; | |
640 | memcpy(addr2, sd->scsi3addr, 8); | |
641 | addr2[4] = 0; | |
642 | /* differ only in byte 4? */ | |
643 | if (memcmp(addr1, addr2, 8) == 0) { | |
644 | device->bus = sd->bus; | |
645 | device->target = sd->target; | |
646 | device->lun = device->scsi3addr[4]; | |
647 | break; | |
648 | } | |
649 | } | |
650 | if (device->lun == -1) { | |
651 | dev_warn(&h->pdev->dev, "physical device with no LUN=0," | |
652 | " suspect firmware bug or unsupported hardware " | |
653 | "configuration.\n"); | |
654 | return -1; | |
655 | } | |
656 | ||
657 | lun_assigned: | |
658 | ||
659 | h->dev[n] = device; | |
660 | h->ndevices++; | |
661 | added[*nadded] = device; | |
662 | (*nadded)++; | |
663 | ||
664 | /* initially, (before registering with scsi layer) we don't | |
665 | * know our hostno and we don't want to print anything first | |
666 | * time anyway (the scsi layer's inquiries will show that info) | |
667 | */ | |
668 | /* if (hostno != -1) */ | |
669 | dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d added.\n", | |
670 | scsi_device_type(device->devtype), hostno, | |
671 | device->bus, device->target, device->lun); | |
672 | return 0; | |
673 | } | |
674 | ||
2a8ccf31 SC |
675 | /* Replace an entry from h->dev[] array. */ |
676 | static void hpsa_scsi_replace_entry(struct ctlr_info *h, int hostno, | |
677 | int entry, struct hpsa_scsi_dev_t *new_entry, | |
678 | struct hpsa_scsi_dev_t *added[], int *nadded, | |
679 | struct hpsa_scsi_dev_t *removed[], int *nremoved) | |
680 | { | |
681 | /* assumes h->devlock is held */ | |
cfe5badc | 682 | BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES); |
2a8ccf31 SC |
683 | removed[*nremoved] = h->dev[entry]; |
684 | (*nremoved)++; | |
01350d05 SC |
685 | |
686 | /* | |
687 | * New physical devices won't have target/lun assigned yet | |
688 | * so we need to preserve the values in the slot we are replacing. | |
689 | */ | |
690 | if (new_entry->target == -1) { | |
691 | new_entry->target = h->dev[entry]->target; | |
692 | new_entry->lun = h->dev[entry]->lun; | |
693 | } | |
694 | ||
2a8ccf31 SC |
695 | h->dev[entry] = new_entry; |
696 | added[*nadded] = new_entry; | |
697 | (*nadded)++; | |
698 | dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d changed.\n", | |
699 | scsi_device_type(new_entry->devtype), hostno, new_entry->bus, | |
700 | new_entry->target, new_entry->lun); | |
701 | } | |
702 | ||
edd16368 SC |
703 | /* Remove an entry from h->dev[] array. */ |
704 | static void hpsa_scsi_remove_entry(struct ctlr_info *h, int hostno, int entry, | |
705 | struct hpsa_scsi_dev_t *removed[], int *nremoved) | |
706 | { | |
707 | /* assumes h->devlock is held */ | |
708 | int i; | |
709 | struct hpsa_scsi_dev_t *sd; | |
710 | ||
cfe5badc | 711 | BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES); |
edd16368 SC |
712 | |
713 | sd = h->dev[entry]; | |
714 | removed[*nremoved] = h->dev[entry]; | |
715 | (*nremoved)++; | |
716 | ||
717 | for (i = entry; i < h->ndevices-1; i++) | |
718 | h->dev[i] = h->dev[i+1]; | |
719 | h->ndevices--; | |
720 | dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d removed.\n", | |
721 | scsi_device_type(sd->devtype), hostno, sd->bus, sd->target, | |
722 | sd->lun); | |
723 | } | |
724 | ||
725 | #define SCSI3ADDR_EQ(a, b) ( \ | |
726 | (a)[7] == (b)[7] && \ | |
727 | (a)[6] == (b)[6] && \ | |
728 | (a)[5] == (b)[5] && \ | |
729 | (a)[4] == (b)[4] && \ | |
730 | (a)[3] == (b)[3] && \ | |
731 | (a)[2] == (b)[2] && \ | |
732 | (a)[1] == (b)[1] && \ | |
733 | (a)[0] == (b)[0]) | |
734 | ||
735 | static void fixup_botched_add(struct ctlr_info *h, | |
736 | struct hpsa_scsi_dev_t *added) | |
737 | { | |
738 | /* called when scsi_add_device fails in order to re-adjust | |
739 | * h->dev[] to match the mid layer's view. | |
740 | */ | |
741 | unsigned long flags; | |
742 | int i, j; | |
743 | ||
744 | spin_lock_irqsave(&h->lock, flags); | |
745 | for (i = 0; i < h->ndevices; i++) { | |
746 | if (h->dev[i] == added) { | |
747 | for (j = i; j < h->ndevices-1; j++) | |
748 | h->dev[j] = h->dev[j+1]; | |
749 | h->ndevices--; | |
750 | break; | |
751 | } | |
752 | } | |
753 | spin_unlock_irqrestore(&h->lock, flags); | |
754 | kfree(added); | |
755 | } | |
756 | ||
757 | static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1, | |
758 | struct hpsa_scsi_dev_t *dev2) | |
759 | { | |
edd16368 SC |
760 | /* we compare everything except lun and target as these |
761 | * are not yet assigned. Compare parts likely | |
762 | * to differ first | |
763 | */ | |
764 | if (memcmp(dev1->scsi3addr, dev2->scsi3addr, | |
765 | sizeof(dev1->scsi3addr)) != 0) | |
766 | return 0; | |
767 | if (memcmp(dev1->device_id, dev2->device_id, | |
768 | sizeof(dev1->device_id)) != 0) | |
769 | return 0; | |
770 | if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0) | |
771 | return 0; | |
772 | if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0) | |
773 | return 0; | |
edd16368 SC |
774 | if (dev1->devtype != dev2->devtype) |
775 | return 0; | |
edd16368 SC |
776 | if (dev1->bus != dev2->bus) |
777 | return 0; | |
778 | return 1; | |
779 | } | |
780 | ||
781 | /* Find needle in haystack. If exact match found, return DEVICE_SAME, | |
782 | * and return needle location in *index. If scsi3addr matches, but not | |
783 | * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle | |
784 | * location in *index. If needle not found, return DEVICE_NOT_FOUND. | |
785 | */ | |
786 | static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle, | |
787 | struct hpsa_scsi_dev_t *haystack[], int haystack_size, | |
788 | int *index) | |
789 | { | |
790 | int i; | |
791 | #define DEVICE_NOT_FOUND 0 | |
792 | #define DEVICE_CHANGED 1 | |
793 | #define DEVICE_SAME 2 | |
794 | for (i = 0; i < haystack_size; i++) { | |
23231048 SC |
795 | if (haystack[i] == NULL) /* previously removed. */ |
796 | continue; | |
edd16368 SC |
797 | if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) { |
798 | *index = i; | |
799 | if (device_is_the_same(needle, haystack[i])) | |
800 | return DEVICE_SAME; | |
801 | else | |
802 | return DEVICE_CHANGED; | |
803 | } | |
804 | } | |
805 | *index = -1; | |
806 | return DEVICE_NOT_FOUND; | |
807 | } | |
808 | ||
4967bd3e | 809 | static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno, |
edd16368 SC |
810 | struct hpsa_scsi_dev_t *sd[], int nsds) |
811 | { | |
812 | /* sd contains scsi3 addresses and devtypes, and inquiry | |
813 | * data. This function takes what's in sd to be the current | |
814 | * reality and updates h->dev[] to reflect that reality. | |
815 | */ | |
816 | int i, entry, device_change, changes = 0; | |
817 | struct hpsa_scsi_dev_t *csd; | |
818 | unsigned long flags; | |
819 | struct hpsa_scsi_dev_t **added, **removed; | |
820 | int nadded, nremoved; | |
821 | struct Scsi_Host *sh = NULL; | |
822 | ||
cfe5badc ST |
823 | added = kzalloc(sizeof(*added) * HPSA_MAX_DEVICES, GFP_KERNEL); |
824 | removed = kzalloc(sizeof(*removed) * HPSA_MAX_DEVICES, GFP_KERNEL); | |
edd16368 SC |
825 | |
826 | if (!added || !removed) { | |
827 | dev_warn(&h->pdev->dev, "out of memory in " | |
828 | "adjust_hpsa_scsi_table\n"); | |
829 | goto free_and_out; | |
830 | } | |
831 | ||
832 | spin_lock_irqsave(&h->devlock, flags); | |
833 | ||
834 | /* find any devices in h->dev[] that are not in | |
835 | * sd[] and remove them from h->dev[], and for any | |
836 | * devices which have changed, remove the old device | |
837 | * info and add the new device info. | |
838 | */ | |
839 | i = 0; | |
840 | nremoved = 0; | |
841 | nadded = 0; | |
842 | while (i < h->ndevices) { | |
843 | csd = h->dev[i]; | |
844 | device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry); | |
845 | if (device_change == DEVICE_NOT_FOUND) { | |
846 | changes++; | |
847 | hpsa_scsi_remove_entry(h, hostno, i, | |
848 | removed, &nremoved); | |
849 | continue; /* remove ^^^, hence i not incremented */ | |
850 | } else if (device_change == DEVICE_CHANGED) { | |
851 | changes++; | |
2a8ccf31 SC |
852 | hpsa_scsi_replace_entry(h, hostno, i, sd[entry], |
853 | added, &nadded, removed, &nremoved); | |
c7f172dc SC |
854 | /* Set it to NULL to prevent it from being freed |
855 | * at the bottom of hpsa_update_scsi_devices() | |
856 | */ | |
857 | sd[entry] = NULL; | |
edd16368 SC |
858 | } |
859 | i++; | |
860 | } | |
861 | ||
862 | /* Now, make sure every device listed in sd[] is also | |
863 | * listed in h->dev[], adding them if they aren't found | |
864 | */ | |
865 | ||
866 | for (i = 0; i < nsds; i++) { | |
867 | if (!sd[i]) /* if already added above. */ | |
868 | continue; | |
869 | device_change = hpsa_scsi_find_entry(sd[i], h->dev, | |
870 | h->ndevices, &entry); | |
871 | if (device_change == DEVICE_NOT_FOUND) { | |
872 | changes++; | |
873 | if (hpsa_scsi_add_entry(h, hostno, sd[i], | |
874 | added, &nadded) != 0) | |
875 | break; | |
876 | sd[i] = NULL; /* prevent from being freed later. */ | |
877 | } else if (device_change == DEVICE_CHANGED) { | |
878 | /* should never happen... */ | |
879 | changes++; | |
880 | dev_warn(&h->pdev->dev, | |
881 | "device unexpectedly changed.\n"); | |
882 | /* but if it does happen, we just ignore that device */ | |
883 | } | |
884 | } | |
885 | spin_unlock_irqrestore(&h->devlock, flags); | |
886 | ||
887 | /* Don't notify scsi mid layer of any changes the first time through | |
888 | * (or if there are no changes) scsi_scan_host will do it later the | |
889 | * first time through. | |
890 | */ | |
891 | if (hostno == -1 || !changes) | |
892 | goto free_and_out; | |
893 | ||
894 | sh = h->scsi_host; | |
895 | /* Notify scsi mid layer of any removed devices */ | |
896 | for (i = 0; i < nremoved; i++) { | |
897 | struct scsi_device *sdev = | |
898 | scsi_device_lookup(sh, removed[i]->bus, | |
899 | removed[i]->target, removed[i]->lun); | |
900 | if (sdev != NULL) { | |
901 | scsi_remove_device(sdev); | |
902 | scsi_device_put(sdev); | |
903 | } else { | |
904 | /* We don't expect to get here. | |
905 | * future cmds to this device will get selection | |
906 | * timeout as if the device was gone. | |
907 | */ | |
908 | dev_warn(&h->pdev->dev, "didn't find c%db%dt%dl%d " | |
909 | " for removal.", hostno, removed[i]->bus, | |
910 | removed[i]->target, removed[i]->lun); | |
911 | } | |
912 | kfree(removed[i]); | |
913 | removed[i] = NULL; | |
914 | } | |
915 | ||
916 | /* Notify scsi mid layer of any added devices */ | |
917 | for (i = 0; i < nadded; i++) { | |
918 | if (scsi_add_device(sh, added[i]->bus, | |
919 | added[i]->target, added[i]->lun) == 0) | |
920 | continue; | |
921 | dev_warn(&h->pdev->dev, "scsi_add_device c%db%dt%dl%d failed, " | |
922 | "device not added.\n", hostno, added[i]->bus, | |
923 | added[i]->target, added[i]->lun); | |
924 | /* now we have to remove it from h->dev, | |
925 | * since it didn't get added to scsi mid layer | |
926 | */ | |
927 | fixup_botched_add(h, added[i]); | |
928 | } | |
929 | ||
930 | free_and_out: | |
931 | kfree(added); | |
932 | kfree(removed); | |
edd16368 SC |
933 | } |
934 | ||
935 | /* | |
936 | * Lookup bus/target/lun and retrun corresponding struct hpsa_scsi_dev_t * | |
937 | * Assume's h->devlock is held. | |
938 | */ | |
939 | static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h, | |
940 | int bus, int target, int lun) | |
941 | { | |
942 | int i; | |
943 | struct hpsa_scsi_dev_t *sd; | |
944 | ||
945 | for (i = 0; i < h->ndevices; i++) { | |
946 | sd = h->dev[i]; | |
947 | if (sd->bus == bus && sd->target == target && sd->lun == lun) | |
948 | return sd; | |
949 | } | |
950 | return NULL; | |
951 | } | |
952 | ||
953 | /* link sdev->hostdata to our per-device structure. */ | |
954 | static int hpsa_slave_alloc(struct scsi_device *sdev) | |
955 | { | |
956 | struct hpsa_scsi_dev_t *sd; | |
957 | unsigned long flags; | |
958 | struct ctlr_info *h; | |
959 | ||
960 | h = sdev_to_hba(sdev); | |
961 | spin_lock_irqsave(&h->devlock, flags); | |
962 | sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev), | |
963 | sdev_id(sdev), sdev->lun); | |
964 | if (sd != NULL) | |
965 | sdev->hostdata = sd; | |
966 | spin_unlock_irqrestore(&h->devlock, flags); | |
967 | return 0; | |
968 | } | |
969 | ||
970 | static void hpsa_slave_destroy(struct scsi_device *sdev) | |
971 | { | |
bcc44255 | 972 | /* nothing to do. */ |
edd16368 SC |
973 | } |
974 | ||
33a2ffce SC |
975 | static void hpsa_free_sg_chain_blocks(struct ctlr_info *h) |
976 | { | |
977 | int i; | |
978 | ||
979 | if (!h->cmd_sg_list) | |
980 | return; | |
981 | for (i = 0; i < h->nr_cmds; i++) { | |
982 | kfree(h->cmd_sg_list[i]); | |
983 | h->cmd_sg_list[i] = NULL; | |
984 | } | |
985 | kfree(h->cmd_sg_list); | |
986 | h->cmd_sg_list = NULL; | |
987 | } | |
988 | ||
989 | static int hpsa_allocate_sg_chain_blocks(struct ctlr_info *h) | |
990 | { | |
991 | int i; | |
992 | ||
993 | if (h->chainsize <= 0) | |
994 | return 0; | |
995 | ||
996 | h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds, | |
997 | GFP_KERNEL); | |
998 | if (!h->cmd_sg_list) | |
999 | return -ENOMEM; | |
1000 | for (i = 0; i < h->nr_cmds; i++) { | |
1001 | h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) * | |
1002 | h->chainsize, GFP_KERNEL); | |
1003 | if (!h->cmd_sg_list[i]) | |
1004 | goto clean; | |
1005 | } | |
1006 | return 0; | |
1007 | ||
1008 | clean: | |
1009 | hpsa_free_sg_chain_blocks(h); | |
1010 | return -ENOMEM; | |
1011 | } | |
1012 | ||
1013 | static void hpsa_map_sg_chain_block(struct ctlr_info *h, | |
1014 | struct CommandList *c) | |
1015 | { | |
1016 | struct SGDescriptor *chain_sg, *chain_block; | |
1017 | u64 temp64; | |
1018 | ||
1019 | chain_sg = &c->SG[h->max_cmd_sg_entries - 1]; | |
1020 | chain_block = h->cmd_sg_list[c->cmdindex]; | |
1021 | chain_sg->Ext = HPSA_SG_CHAIN; | |
1022 | chain_sg->Len = sizeof(*chain_sg) * | |
1023 | (c->Header.SGTotal - h->max_cmd_sg_entries); | |
1024 | temp64 = pci_map_single(h->pdev, chain_block, chain_sg->Len, | |
1025 | PCI_DMA_TODEVICE); | |
1026 | chain_sg->Addr.lower = (u32) (temp64 & 0x0FFFFFFFFULL); | |
1027 | chain_sg->Addr.upper = (u32) ((temp64 >> 32) & 0x0FFFFFFFFULL); | |
1028 | } | |
1029 | ||
1030 | static void hpsa_unmap_sg_chain_block(struct ctlr_info *h, | |
1031 | struct CommandList *c) | |
1032 | { | |
1033 | struct SGDescriptor *chain_sg; | |
1034 | union u64bit temp64; | |
1035 | ||
1036 | if (c->Header.SGTotal <= h->max_cmd_sg_entries) | |
1037 | return; | |
1038 | ||
1039 | chain_sg = &c->SG[h->max_cmd_sg_entries - 1]; | |
1040 | temp64.val32.lower = chain_sg->Addr.lower; | |
1041 | temp64.val32.upper = chain_sg->Addr.upper; | |
1042 | pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE); | |
1043 | } | |
1044 | ||
1fb011fb | 1045 | static void complete_scsi_command(struct CommandList *cp) |
edd16368 SC |
1046 | { |
1047 | struct scsi_cmnd *cmd; | |
1048 | struct ctlr_info *h; | |
1049 | struct ErrorInfo *ei; | |
1050 | ||
1051 | unsigned char sense_key; | |
1052 | unsigned char asc; /* additional sense code */ | |
1053 | unsigned char ascq; /* additional sense code qualifier */ | |
db111e18 | 1054 | unsigned long sense_data_size; |
edd16368 SC |
1055 | |
1056 | ei = cp->err_info; | |
1057 | cmd = (struct scsi_cmnd *) cp->scsi_cmd; | |
1058 | h = cp->h; | |
1059 | ||
1060 | scsi_dma_unmap(cmd); /* undo the DMA mappings */ | |
33a2ffce SC |
1061 | if (cp->Header.SGTotal > h->max_cmd_sg_entries) |
1062 | hpsa_unmap_sg_chain_block(h, cp); | |
edd16368 SC |
1063 | |
1064 | cmd->result = (DID_OK << 16); /* host byte */ | |
1065 | cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ | |
5512672f | 1066 | cmd->result |= ei->ScsiStatus; |
edd16368 SC |
1067 | |
1068 | /* copy the sense data whether we need to or not. */ | |
db111e18 SC |
1069 | if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo)) |
1070 | sense_data_size = SCSI_SENSE_BUFFERSIZE; | |
1071 | else | |
1072 | sense_data_size = sizeof(ei->SenseInfo); | |
1073 | if (ei->SenseLen < sense_data_size) | |
1074 | sense_data_size = ei->SenseLen; | |
1075 | ||
1076 | memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size); | |
edd16368 SC |
1077 | scsi_set_resid(cmd, ei->ResidualCnt); |
1078 | ||
1079 | if (ei->CommandStatus == 0) { | |
1080 | cmd->scsi_done(cmd); | |
1081 | cmd_free(h, cp); | |
1082 | return; | |
1083 | } | |
1084 | ||
1085 | /* an error has occurred */ | |
1086 | switch (ei->CommandStatus) { | |
1087 | ||
1088 | case CMD_TARGET_STATUS: | |
1089 | if (ei->ScsiStatus) { | |
1090 | /* Get sense key */ | |
1091 | sense_key = 0xf & ei->SenseInfo[2]; | |
1092 | /* Get additional sense code */ | |
1093 | asc = ei->SenseInfo[12]; | |
1094 | /* Get addition sense code qualifier */ | |
1095 | ascq = ei->SenseInfo[13]; | |
1096 | } | |
1097 | ||
1098 | if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) { | |
1099 | if (check_for_unit_attention(h, cp)) { | |
1100 | cmd->result = DID_SOFT_ERROR << 16; | |
1101 | break; | |
1102 | } | |
1103 | if (sense_key == ILLEGAL_REQUEST) { | |
1104 | /* | |
1105 | * SCSI REPORT_LUNS is commonly unsupported on | |
1106 | * Smart Array. Suppress noisy complaint. | |
1107 | */ | |
1108 | if (cp->Request.CDB[0] == REPORT_LUNS) | |
1109 | break; | |
1110 | ||
1111 | /* If ASC/ASCQ indicate Logical Unit | |
1112 | * Not Supported condition, | |
1113 | */ | |
1114 | if ((asc == 0x25) && (ascq == 0x0)) { | |
1115 | dev_warn(&h->pdev->dev, "cp %p " | |
1116 | "has check condition\n", cp); | |
1117 | break; | |
1118 | } | |
1119 | } | |
1120 | ||
1121 | if (sense_key == NOT_READY) { | |
1122 | /* If Sense is Not Ready, Logical Unit | |
1123 | * Not ready, Manual Intervention | |
1124 | * required | |
1125 | */ | |
1126 | if ((asc == 0x04) && (ascq == 0x03)) { | |
edd16368 SC |
1127 | dev_warn(&h->pdev->dev, "cp %p " |
1128 | "has check condition: unit " | |
1129 | "not ready, manual " | |
1130 | "intervention required\n", cp); | |
1131 | break; | |
1132 | } | |
1133 | } | |
1d3b3609 MG |
1134 | if (sense_key == ABORTED_COMMAND) { |
1135 | /* Aborted command is retryable */ | |
1136 | dev_warn(&h->pdev->dev, "cp %p " | |
1137 | "has check condition: aborted command: " | |
1138 | "ASC: 0x%x, ASCQ: 0x%x\n", | |
1139 | cp, asc, ascq); | |
1140 | cmd->result = DID_SOFT_ERROR << 16; | |
1141 | break; | |
1142 | } | |
edd16368 SC |
1143 | /* Must be some other type of check condition */ |
1144 | dev_warn(&h->pdev->dev, "cp %p has check condition: " | |
1145 | "unknown type: " | |
1146 | "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, " | |
1147 | "Returning result: 0x%x, " | |
1148 | "cmd=[%02x %02x %02x %02x %02x " | |
807be732 | 1149 | "%02x %02x %02x %02x %02x %02x " |
edd16368 SC |
1150 | "%02x %02x %02x %02x %02x]\n", |
1151 | cp, sense_key, asc, ascq, | |
1152 | cmd->result, | |
1153 | cmd->cmnd[0], cmd->cmnd[1], | |
1154 | cmd->cmnd[2], cmd->cmnd[3], | |
1155 | cmd->cmnd[4], cmd->cmnd[5], | |
1156 | cmd->cmnd[6], cmd->cmnd[7], | |
807be732 MM |
1157 | cmd->cmnd[8], cmd->cmnd[9], |
1158 | cmd->cmnd[10], cmd->cmnd[11], | |
1159 | cmd->cmnd[12], cmd->cmnd[13], | |
1160 | cmd->cmnd[14], cmd->cmnd[15]); | |
edd16368 SC |
1161 | break; |
1162 | } | |
1163 | ||
1164 | ||
1165 | /* Problem was not a check condition | |
1166 | * Pass it up to the upper layers... | |
1167 | */ | |
1168 | if (ei->ScsiStatus) { | |
1169 | dev_warn(&h->pdev->dev, "cp %p has status 0x%x " | |
1170 | "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, " | |
1171 | "Returning result: 0x%x\n", | |
1172 | cp, ei->ScsiStatus, | |
1173 | sense_key, asc, ascq, | |
1174 | cmd->result); | |
1175 | } else { /* scsi status is zero??? How??? */ | |
1176 | dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. " | |
1177 | "Returning no connection.\n", cp), | |
1178 | ||
1179 | /* Ordinarily, this case should never happen, | |
1180 | * but there is a bug in some released firmware | |
1181 | * revisions that allows it to happen if, for | |
1182 | * example, a 4100 backplane loses power and | |
1183 | * the tape drive is in it. We assume that | |
1184 | * it's a fatal error of some kind because we | |
1185 | * can't show that it wasn't. We will make it | |
1186 | * look like selection timeout since that is | |
1187 | * the most common reason for this to occur, | |
1188 | * and it's severe enough. | |
1189 | */ | |
1190 | ||
1191 | cmd->result = DID_NO_CONNECT << 16; | |
1192 | } | |
1193 | break; | |
1194 | ||
1195 | case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ | |
1196 | break; | |
1197 | case CMD_DATA_OVERRUN: | |
1198 | dev_warn(&h->pdev->dev, "cp %p has" | |
1199 | " completed with data overrun " | |
1200 | "reported\n", cp); | |
1201 | break; | |
1202 | case CMD_INVALID: { | |
1203 | /* print_bytes(cp, sizeof(*cp), 1, 0); | |
1204 | print_cmd(cp); */ | |
1205 | /* We get CMD_INVALID if you address a non-existent device | |
1206 | * instead of a selection timeout (no response). You will | |
1207 | * see this if you yank out a drive, then try to access it. | |
1208 | * This is kind of a shame because it means that any other | |
1209 | * CMD_INVALID (e.g. driver bug) will get interpreted as a | |
1210 | * missing target. */ | |
1211 | cmd->result = DID_NO_CONNECT << 16; | |
1212 | } | |
1213 | break; | |
1214 | case CMD_PROTOCOL_ERR: | |
1215 | dev_warn(&h->pdev->dev, "cp %p has " | |
1216 | "protocol error \n", cp); | |
1217 | break; | |
1218 | case CMD_HARDWARE_ERR: | |
1219 | cmd->result = DID_ERROR << 16; | |
1220 | dev_warn(&h->pdev->dev, "cp %p had hardware error\n", cp); | |
1221 | break; | |
1222 | case CMD_CONNECTION_LOST: | |
1223 | cmd->result = DID_ERROR << 16; | |
1224 | dev_warn(&h->pdev->dev, "cp %p had connection lost\n", cp); | |
1225 | break; | |
1226 | case CMD_ABORTED: | |
1227 | cmd->result = DID_ABORT << 16; | |
1228 | dev_warn(&h->pdev->dev, "cp %p was aborted with status 0x%x\n", | |
1229 | cp, ei->ScsiStatus); | |
1230 | break; | |
1231 | case CMD_ABORT_FAILED: | |
1232 | cmd->result = DID_ERROR << 16; | |
1233 | dev_warn(&h->pdev->dev, "cp %p reports abort failed\n", cp); | |
1234 | break; | |
1235 | case CMD_UNSOLICITED_ABORT: | |
f6e76055 SC |
1236 | cmd->result = DID_SOFT_ERROR << 16; /* retry the command */ |
1237 | dev_warn(&h->pdev->dev, "cp %p aborted due to an unsolicited " | |
edd16368 SC |
1238 | "abort\n", cp); |
1239 | break; | |
1240 | case CMD_TIMEOUT: | |
1241 | cmd->result = DID_TIME_OUT << 16; | |
1242 | dev_warn(&h->pdev->dev, "cp %p timedout\n", cp); | |
1243 | break; | |
1d5e2ed0 SC |
1244 | case CMD_UNABORTABLE: |
1245 | cmd->result = DID_ERROR << 16; | |
1246 | dev_warn(&h->pdev->dev, "Command unabortable\n"); | |
1247 | break; | |
edd16368 SC |
1248 | default: |
1249 | cmd->result = DID_ERROR << 16; | |
1250 | dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n", | |
1251 | cp, ei->CommandStatus); | |
1252 | } | |
1253 | cmd->scsi_done(cmd); | |
1254 | cmd_free(h, cp); | |
1255 | } | |
1256 | ||
1257 | static int hpsa_scsi_detect(struct ctlr_info *h) | |
1258 | { | |
1259 | struct Scsi_Host *sh; | |
1260 | int error; | |
1261 | ||
1262 | sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h)); | |
1263 | if (sh == NULL) | |
1264 | goto fail; | |
1265 | ||
1266 | sh->io_port = 0; | |
1267 | sh->n_io_port = 0; | |
1268 | sh->this_id = -1; | |
1269 | sh->max_channel = 3; | |
1270 | sh->max_cmd_len = MAX_COMMAND_SIZE; | |
1271 | sh->max_lun = HPSA_MAX_LUN; | |
1272 | sh->max_id = HPSA_MAX_LUN; | |
303932fd DB |
1273 | sh->can_queue = h->nr_cmds; |
1274 | sh->cmd_per_lun = h->nr_cmds; | |
33a2ffce | 1275 | sh->sg_tablesize = h->maxsgentries; |
edd16368 SC |
1276 | h->scsi_host = sh; |
1277 | sh->hostdata[0] = (unsigned long) h; | |
a9a3a273 | 1278 | sh->irq = h->intr[h->intr_mode]; |
edd16368 SC |
1279 | sh->unique_id = sh->irq; |
1280 | error = scsi_add_host(sh, &h->pdev->dev); | |
1281 | if (error) | |
1282 | goto fail_host_put; | |
1283 | scsi_scan_host(sh); | |
1284 | return 0; | |
1285 | ||
1286 | fail_host_put: | |
1287 | dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_add_host" | |
1288 | " failed for controller %d\n", h->ctlr); | |
1289 | scsi_host_put(sh); | |
ecd9aad4 | 1290 | return error; |
edd16368 SC |
1291 | fail: |
1292 | dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_host_alloc" | |
1293 | " failed for controller %d\n", h->ctlr); | |
ecd9aad4 | 1294 | return -ENOMEM; |
edd16368 SC |
1295 | } |
1296 | ||
1297 | static void hpsa_pci_unmap(struct pci_dev *pdev, | |
1298 | struct CommandList *c, int sg_used, int data_direction) | |
1299 | { | |
1300 | int i; | |
1301 | union u64bit addr64; | |
1302 | ||
1303 | for (i = 0; i < sg_used; i++) { | |
1304 | addr64.val32.lower = c->SG[i].Addr.lower; | |
1305 | addr64.val32.upper = c->SG[i].Addr.upper; | |
1306 | pci_unmap_single(pdev, (dma_addr_t) addr64.val, c->SG[i].Len, | |
1307 | data_direction); | |
1308 | } | |
1309 | } | |
1310 | ||
1311 | static void hpsa_map_one(struct pci_dev *pdev, | |
1312 | struct CommandList *cp, | |
1313 | unsigned char *buf, | |
1314 | size_t buflen, | |
1315 | int data_direction) | |
1316 | { | |
01a02ffc | 1317 | u64 addr64; |
edd16368 SC |
1318 | |
1319 | if (buflen == 0 || data_direction == PCI_DMA_NONE) { | |
1320 | cp->Header.SGList = 0; | |
1321 | cp->Header.SGTotal = 0; | |
1322 | return; | |
1323 | } | |
1324 | ||
01a02ffc | 1325 | addr64 = (u64) pci_map_single(pdev, buf, buflen, data_direction); |
edd16368 | 1326 | cp->SG[0].Addr.lower = |
01a02ffc | 1327 | (u32) (addr64 & (u64) 0x00000000FFFFFFFF); |
edd16368 | 1328 | cp->SG[0].Addr.upper = |
01a02ffc | 1329 | (u32) ((addr64 >> 32) & (u64) 0x00000000FFFFFFFF); |
edd16368 | 1330 | cp->SG[0].Len = buflen; |
01a02ffc SC |
1331 | cp->Header.SGList = (u8) 1; /* no. SGs contig in this cmd */ |
1332 | cp->Header.SGTotal = (u16) 1; /* total sgs in this cmd list */ | |
edd16368 SC |
1333 | } |
1334 | ||
1335 | static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h, | |
1336 | struct CommandList *c) | |
1337 | { | |
1338 | DECLARE_COMPLETION_ONSTACK(wait); | |
1339 | ||
1340 | c->waiting = &wait; | |
1341 | enqueue_cmd_and_start_io(h, c); | |
1342 | wait_for_completion(&wait); | |
1343 | } | |
1344 | ||
a0c12413 SC |
1345 | static void hpsa_scsi_do_simple_cmd_core_if_no_lockup(struct ctlr_info *h, |
1346 | struct CommandList *c) | |
1347 | { | |
1348 | unsigned long flags; | |
1349 | ||
1350 | /* If controller lockup detected, fake a hardware error. */ | |
1351 | spin_lock_irqsave(&h->lock, flags); | |
1352 | if (unlikely(h->lockup_detected)) { | |
1353 | spin_unlock_irqrestore(&h->lock, flags); | |
1354 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; | |
1355 | } else { | |
1356 | spin_unlock_irqrestore(&h->lock, flags); | |
1357 | hpsa_scsi_do_simple_cmd_core(h, c); | |
1358 | } | |
1359 | } | |
1360 | ||
edd16368 SC |
1361 | static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h, |
1362 | struct CommandList *c, int data_direction) | |
1363 | { | |
1364 | int retry_count = 0; | |
1365 | ||
1366 | do { | |
7630abd0 | 1367 | memset(c->err_info, 0, sizeof(*c->err_info)); |
edd16368 SC |
1368 | hpsa_scsi_do_simple_cmd_core(h, c); |
1369 | retry_count++; | |
1370 | } while (check_for_unit_attention(h, c) && retry_count <= 3); | |
1371 | hpsa_pci_unmap(h->pdev, c, 1, data_direction); | |
1372 | } | |
1373 | ||
1374 | static void hpsa_scsi_interpret_error(struct CommandList *cp) | |
1375 | { | |
1376 | struct ErrorInfo *ei; | |
1377 | struct device *d = &cp->h->pdev->dev; | |
1378 | ||
1379 | ei = cp->err_info; | |
1380 | switch (ei->CommandStatus) { | |
1381 | case CMD_TARGET_STATUS: | |
1382 | dev_warn(d, "cmd %p has completed with errors\n", cp); | |
1383 | dev_warn(d, "cmd %p has SCSI Status = %x\n", cp, | |
1384 | ei->ScsiStatus); | |
1385 | if (ei->ScsiStatus == 0) | |
1386 | dev_warn(d, "SCSI status is abnormally zero. " | |
1387 | "(probably indicates selection timeout " | |
1388 | "reported incorrectly due to a known " | |
1389 | "firmware bug, circa July, 2001.)\n"); | |
1390 | break; | |
1391 | case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ | |
1392 | dev_info(d, "UNDERRUN\n"); | |
1393 | break; | |
1394 | case CMD_DATA_OVERRUN: | |
1395 | dev_warn(d, "cp %p has completed with data overrun\n", cp); | |
1396 | break; | |
1397 | case CMD_INVALID: { | |
1398 | /* controller unfortunately reports SCSI passthru's | |
1399 | * to non-existent targets as invalid commands. | |
1400 | */ | |
1401 | dev_warn(d, "cp %p is reported invalid (probably means " | |
1402 | "target device no longer present)\n", cp); | |
1403 | /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0); | |
1404 | print_cmd(cp); */ | |
1405 | } | |
1406 | break; | |
1407 | case CMD_PROTOCOL_ERR: | |
1408 | dev_warn(d, "cp %p has protocol error \n", cp); | |
1409 | break; | |
1410 | case CMD_HARDWARE_ERR: | |
1411 | /* cmd->result = DID_ERROR << 16; */ | |
1412 | dev_warn(d, "cp %p had hardware error\n", cp); | |
1413 | break; | |
1414 | case CMD_CONNECTION_LOST: | |
1415 | dev_warn(d, "cp %p had connection lost\n", cp); | |
1416 | break; | |
1417 | case CMD_ABORTED: | |
1418 | dev_warn(d, "cp %p was aborted\n", cp); | |
1419 | break; | |
1420 | case CMD_ABORT_FAILED: | |
1421 | dev_warn(d, "cp %p reports abort failed\n", cp); | |
1422 | break; | |
1423 | case CMD_UNSOLICITED_ABORT: | |
1424 | dev_warn(d, "cp %p aborted due to an unsolicited abort\n", cp); | |
1425 | break; | |
1426 | case CMD_TIMEOUT: | |
1427 | dev_warn(d, "cp %p timed out\n", cp); | |
1428 | break; | |
1d5e2ed0 SC |
1429 | case CMD_UNABORTABLE: |
1430 | dev_warn(d, "Command unabortable\n"); | |
1431 | break; | |
edd16368 SC |
1432 | default: |
1433 | dev_warn(d, "cp %p returned unknown status %x\n", cp, | |
1434 | ei->CommandStatus); | |
1435 | } | |
1436 | } | |
1437 | ||
1438 | static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr, | |
1439 | unsigned char page, unsigned char *buf, | |
1440 | unsigned char bufsize) | |
1441 | { | |
1442 | int rc = IO_OK; | |
1443 | struct CommandList *c; | |
1444 | struct ErrorInfo *ei; | |
1445 | ||
1446 | c = cmd_special_alloc(h); | |
1447 | ||
1448 | if (c == NULL) { /* trouble... */ | |
1449 | dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); | |
ecd9aad4 | 1450 | return -ENOMEM; |
edd16368 SC |
1451 | } |
1452 | ||
1453 | fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, page, scsi3addr, TYPE_CMD); | |
1454 | hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); | |
1455 | ei = c->err_info; | |
1456 | if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { | |
1457 | hpsa_scsi_interpret_error(c); | |
1458 | rc = -1; | |
1459 | } | |
1460 | cmd_special_free(h, c); | |
1461 | return rc; | |
1462 | } | |
1463 | ||
1464 | static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr) | |
1465 | { | |
1466 | int rc = IO_OK; | |
1467 | struct CommandList *c; | |
1468 | struct ErrorInfo *ei; | |
1469 | ||
1470 | c = cmd_special_alloc(h); | |
1471 | ||
1472 | if (c == NULL) { /* trouble... */ | |
1473 | dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); | |
e9ea04a6 | 1474 | return -ENOMEM; |
edd16368 SC |
1475 | } |
1476 | ||
1477 | fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, scsi3addr, TYPE_MSG); | |
1478 | hpsa_scsi_do_simple_cmd_core(h, c); | |
1479 | /* no unmap needed here because no data xfer. */ | |
1480 | ||
1481 | ei = c->err_info; | |
1482 | if (ei->CommandStatus != 0) { | |
1483 | hpsa_scsi_interpret_error(c); | |
1484 | rc = -1; | |
1485 | } | |
1486 | cmd_special_free(h, c); | |
1487 | return rc; | |
1488 | } | |
1489 | ||
1490 | static void hpsa_get_raid_level(struct ctlr_info *h, | |
1491 | unsigned char *scsi3addr, unsigned char *raid_level) | |
1492 | { | |
1493 | int rc; | |
1494 | unsigned char *buf; | |
1495 | ||
1496 | *raid_level = RAID_UNKNOWN; | |
1497 | buf = kzalloc(64, GFP_KERNEL); | |
1498 | if (!buf) | |
1499 | return; | |
1500 | rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0xC1, buf, 64); | |
1501 | if (rc == 0) | |
1502 | *raid_level = buf[8]; | |
1503 | if (*raid_level > RAID_UNKNOWN) | |
1504 | *raid_level = RAID_UNKNOWN; | |
1505 | kfree(buf); | |
1506 | return; | |
1507 | } | |
1508 | ||
1509 | /* Get the device id from inquiry page 0x83 */ | |
1510 | static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr, | |
1511 | unsigned char *device_id, int buflen) | |
1512 | { | |
1513 | int rc; | |
1514 | unsigned char *buf; | |
1515 | ||
1516 | if (buflen > 16) | |
1517 | buflen = 16; | |
1518 | buf = kzalloc(64, GFP_KERNEL); | |
1519 | if (!buf) | |
1520 | return -1; | |
1521 | rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0x83, buf, 64); | |
1522 | if (rc == 0) | |
1523 | memcpy(device_id, &buf[8], buflen); | |
1524 | kfree(buf); | |
1525 | return rc != 0; | |
1526 | } | |
1527 | ||
1528 | static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical, | |
1529 | struct ReportLUNdata *buf, int bufsize, | |
1530 | int extended_response) | |
1531 | { | |
1532 | int rc = IO_OK; | |
1533 | struct CommandList *c; | |
1534 | unsigned char scsi3addr[8]; | |
1535 | struct ErrorInfo *ei; | |
1536 | ||
1537 | c = cmd_special_alloc(h); | |
1538 | if (c == NULL) { /* trouble... */ | |
1539 | dev_err(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); | |
1540 | return -1; | |
1541 | } | |
e89c0ae7 SC |
1542 | /* address the controller */ |
1543 | memset(scsi3addr, 0, sizeof(scsi3addr)); | |
edd16368 SC |
1544 | fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h, |
1545 | buf, bufsize, 0, scsi3addr, TYPE_CMD); | |
1546 | if (extended_response) | |
1547 | c->Request.CDB[1] = extended_response; | |
1548 | hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); | |
1549 | ei = c->err_info; | |
1550 | if (ei->CommandStatus != 0 && | |
1551 | ei->CommandStatus != CMD_DATA_UNDERRUN) { | |
1552 | hpsa_scsi_interpret_error(c); | |
1553 | rc = -1; | |
1554 | } | |
1555 | cmd_special_free(h, c); | |
1556 | return rc; | |
1557 | } | |
1558 | ||
1559 | static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h, | |
1560 | struct ReportLUNdata *buf, | |
1561 | int bufsize, int extended_response) | |
1562 | { | |
1563 | return hpsa_scsi_do_report_luns(h, 0, buf, bufsize, extended_response); | |
1564 | } | |
1565 | ||
1566 | static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h, | |
1567 | struct ReportLUNdata *buf, int bufsize) | |
1568 | { | |
1569 | return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0); | |
1570 | } | |
1571 | ||
1572 | static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device, | |
1573 | int bus, int target, int lun) | |
1574 | { | |
1575 | device->bus = bus; | |
1576 | device->target = target; | |
1577 | device->lun = lun; | |
1578 | } | |
1579 | ||
1580 | static int hpsa_update_device_info(struct ctlr_info *h, | |
0b0e1d6c SC |
1581 | unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device, |
1582 | unsigned char *is_OBDR_device) | |
edd16368 | 1583 | { |
0b0e1d6c SC |
1584 | |
1585 | #define OBDR_SIG_OFFSET 43 | |
1586 | #define OBDR_TAPE_SIG "$DR-10" | |
1587 | #define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1) | |
1588 | #define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN) | |
1589 | ||
ea6d3bc3 | 1590 | unsigned char *inq_buff; |
0b0e1d6c | 1591 | unsigned char *obdr_sig; |
edd16368 | 1592 | |
ea6d3bc3 | 1593 | inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); |
edd16368 SC |
1594 | if (!inq_buff) |
1595 | goto bail_out; | |
1596 | ||
edd16368 SC |
1597 | /* Do an inquiry to the device to see what it is. */ |
1598 | if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff, | |
1599 | (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) { | |
1600 | /* Inquiry failed (msg printed already) */ | |
1601 | dev_err(&h->pdev->dev, | |
1602 | "hpsa_update_device_info: inquiry failed\n"); | |
1603 | goto bail_out; | |
1604 | } | |
1605 | ||
edd16368 SC |
1606 | this_device->devtype = (inq_buff[0] & 0x1f); |
1607 | memcpy(this_device->scsi3addr, scsi3addr, 8); | |
1608 | memcpy(this_device->vendor, &inq_buff[8], | |
1609 | sizeof(this_device->vendor)); | |
1610 | memcpy(this_device->model, &inq_buff[16], | |
1611 | sizeof(this_device->model)); | |
edd16368 SC |
1612 | memset(this_device->device_id, 0, |
1613 | sizeof(this_device->device_id)); | |
1614 | hpsa_get_device_id(h, scsi3addr, this_device->device_id, | |
1615 | sizeof(this_device->device_id)); | |
1616 | ||
1617 | if (this_device->devtype == TYPE_DISK && | |
1618 | is_logical_dev_addr_mode(scsi3addr)) | |
1619 | hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level); | |
1620 | else | |
1621 | this_device->raid_level = RAID_UNKNOWN; | |
1622 | ||
0b0e1d6c SC |
1623 | if (is_OBDR_device) { |
1624 | /* See if this is a One-Button-Disaster-Recovery device | |
1625 | * by looking for "$DR-10" at offset 43 in inquiry data. | |
1626 | */ | |
1627 | obdr_sig = &inq_buff[OBDR_SIG_OFFSET]; | |
1628 | *is_OBDR_device = (this_device->devtype == TYPE_ROM && | |
1629 | strncmp(obdr_sig, OBDR_TAPE_SIG, | |
1630 | OBDR_SIG_LEN) == 0); | |
1631 | } | |
1632 | ||
edd16368 SC |
1633 | kfree(inq_buff); |
1634 | return 0; | |
1635 | ||
1636 | bail_out: | |
1637 | kfree(inq_buff); | |
1638 | return 1; | |
1639 | } | |
1640 | ||
1641 | static unsigned char *msa2xxx_model[] = { | |
1642 | "MSA2012", | |
1643 | "MSA2024", | |
1644 | "MSA2312", | |
1645 | "MSA2324", | |
fda38518 | 1646 | "P2000 G3 SAS", |
edd16368 SC |
1647 | NULL, |
1648 | }; | |
1649 | ||
1650 | static int is_msa2xxx(struct ctlr_info *h, struct hpsa_scsi_dev_t *device) | |
1651 | { | |
1652 | int i; | |
1653 | ||
1654 | for (i = 0; msa2xxx_model[i]; i++) | |
1655 | if (strncmp(device->model, msa2xxx_model[i], | |
1656 | strlen(msa2xxx_model[i])) == 0) | |
1657 | return 1; | |
1658 | return 0; | |
1659 | } | |
1660 | ||
1661 | /* Helper function to assign bus, target, lun mapping of devices. | |
1662 | * Puts non-msa2xxx logical volumes on bus 0, msa2xxx logical | |
1663 | * volumes on bus 1, physical devices on bus 2. and the hba on bus 3. | |
1664 | * Logical drive target and lun are assigned at this time, but | |
1665 | * physical device lun and target assignment are deferred (assigned | |
1666 | * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.) | |
1667 | */ | |
1668 | static void figure_bus_target_lun(struct ctlr_info *h, | |
01a02ffc | 1669 | u8 *lunaddrbytes, int *bus, int *target, int *lun, |
edd16368 SC |
1670 | struct hpsa_scsi_dev_t *device) |
1671 | { | |
01a02ffc | 1672 | u32 lunid; |
edd16368 SC |
1673 | |
1674 | if (is_logical_dev_addr_mode(lunaddrbytes)) { | |
1675 | /* logical device */ | |
339b2b14 SC |
1676 | if (unlikely(is_scsi_rev_5(h))) { |
1677 | /* p1210m, logical drives lun assignments | |
1678 | * match SCSI REPORT LUNS data. | |
1679 | */ | |
1680 | lunid = le32_to_cpu(*((__le32 *) lunaddrbytes)); | |
edd16368 | 1681 | *bus = 0; |
339b2b14 SC |
1682 | *target = 0; |
1683 | *lun = (lunid & 0x3fff) + 1; | |
1684 | } else { | |
1685 | /* not p1210m... */ | |
1686 | lunid = le32_to_cpu(*((__le32 *) lunaddrbytes)); | |
1687 | if (is_msa2xxx(h, device)) { | |
1688 | /* msa2xxx way, put logicals on bus 1 | |
1689 | * and match target/lun numbers box | |
1690 | * reports. | |
1691 | */ | |
1692 | *bus = 1; | |
1693 | *target = (lunid >> 16) & 0x3fff; | |
1694 | *lun = lunid & 0x00ff; | |
1695 | } else { | |
1696 | /* Traditional smart array way. */ | |
1697 | *bus = 0; | |
1698 | *lun = 0; | |
1699 | *target = lunid & 0x3fff; | |
1700 | } | |
edd16368 SC |
1701 | } |
1702 | } else { | |
1703 | /* physical device */ | |
1704 | if (is_hba_lunid(lunaddrbytes)) | |
339b2b14 SC |
1705 | if (unlikely(is_scsi_rev_5(h))) { |
1706 | *bus = 0; /* put p1210m ctlr at 0,0,0 */ | |
1707 | *target = 0; | |
1708 | *lun = 0; | |
1709 | return; | |
1710 | } else | |
1711 | *bus = 3; /* traditional smartarray */ | |
edd16368 | 1712 | else |
339b2b14 | 1713 | *bus = 2; /* physical disk */ |
edd16368 SC |
1714 | *target = -1; |
1715 | *lun = -1; /* we will fill these in later. */ | |
1716 | } | |
1717 | } | |
1718 | ||
1719 | /* | |
1720 | * If there is no lun 0 on a target, linux won't find any devices. | |
1721 | * For the MSA2xxx boxes, we have to manually detect the enclosure | |
1722 | * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report | |
1723 | * it for some reason. *tmpdevice is the target we're adding, | |
1724 | * this_device is a pointer into the current element of currentsd[] | |
1725 | * that we're building up in update_scsi_devices(), below. | |
1726 | * lunzerobits is a bitmap that tracks which targets already have a | |
1727 | * lun 0 assigned. | |
1728 | * Returns 1 if an enclosure was added, 0 if not. | |
1729 | */ | |
1730 | static int add_msa2xxx_enclosure_device(struct ctlr_info *h, | |
1731 | struct hpsa_scsi_dev_t *tmpdevice, | |
01a02ffc | 1732 | struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes, |
edd16368 SC |
1733 | int bus, int target, int lun, unsigned long lunzerobits[], |
1734 | int *nmsa2xxx_enclosures) | |
1735 | { | |
1736 | unsigned char scsi3addr[8]; | |
1737 | ||
1738 | if (test_bit(target, lunzerobits)) | |
1739 | return 0; /* There is already a lun 0 on this target. */ | |
1740 | ||
1741 | if (!is_logical_dev_addr_mode(lunaddrbytes)) | |
1742 | return 0; /* It's the logical targets that may lack lun 0. */ | |
1743 | ||
1744 | if (!is_msa2xxx(h, tmpdevice)) | |
1745 | return 0; /* It's only the MSA2xxx that have this problem. */ | |
1746 | ||
1747 | if (lun == 0) /* if lun is 0, then obviously we have a lun 0. */ | |
1748 | return 0; | |
1749 | ||
c4f8a299 SC |
1750 | memset(scsi3addr, 0, 8); |
1751 | scsi3addr[3] = target; | |
edd16368 SC |
1752 | if (is_hba_lunid(scsi3addr)) |
1753 | return 0; /* Don't add the RAID controller here. */ | |
1754 | ||
339b2b14 SC |
1755 | if (is_scsi_rev_5(h)) |
1756 | return 0; /* p1210m doesn't need to do this. */ | |
1757 | ||
edd16368 SC |
1758 | if (*nmsa2xxx_enclosures >= MAX_MSA2XXX_ENCLOSURES) { |
1759 | dev_warn(&h->pdev->dev, "Maximum number of MSA2XXX " | |
1760 | "enclosures exceeded. Check your hardware " | |
1761 | "configuration."); | |
1762 | return 0; | |
1763 | } | |
1764 | ||
0b0e1d6c | 1765 | if (hpsa_update_device_info(h, scsi3addr, this_device, NULL)) |
edd16368 SC |
1766 | return 0; |
1767 | (*nmsa2xxx_enclosures)++; | |
1768 | hpsa_set_bus_target_lun(this_device, bus, target, 0); | |
1769 | set_bit(target, lunzerobits); | |
1770 | return 1; | |
1771 | } | |
1772 | ||
1773 | /* | |
1774 | * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev, | |
1775 | * logdev. The number of luns in physdev and logdev are returned in | |
1776 | * *nphysicals and *nlogicals, respectively. | |
1777 | * Returns 0 on success, -1 otherwise. | |
1778 | */ | |
1779 | static int hpsa_gather_lun_info(struct ctlr_info *h, | |
1780 | int reportlunsize, | |
01a02ffc SC |
1781 | struct ReportLUNdata *physdev, u32 *nphysicals, |
1782 | struct ReportLUNdata *logdev, u32 *nlogicals) | |
edd16368 SC |
1783 | { |
1784 | if (hpsa_scsi_do_report_phys_luns(h, physdev, reportlunsize, 0)) { | |
1785 | dev_err(&h->pdev->dev, "report physical LUNs failed.\n"); | |
1786 | return -1; | |
1787 | } | |
6df1e954 | 1788 | *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 8; |
edd16368 SC |
1789 | if (*nphysicals > HPSA_MAX_PHYS_LUN) { |
1790 | dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded." | |
1791 | " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, | |
1792 | *nphysicals - HPSA_MAX_PHYS_LUN); | |
1793 | *nphysicals = HPSA_MAX_PHYS_LUN; | |
1794 | } | |
1795 | if (hpsa_scsi_do_report_log_luns(h, logdev, reportlunsize)) { | |
1796 | dev_err(&h->pdev->dev, "report logical LUNs failed.\n"); | |
1797 | return -1; | |
1798 | } | |
6df1e954 | 1799 | *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8; |
edd16368 SC |
1800 | /* Reject Logicals in excess of our max capability. */ |
1801 | if (*nlogicals > HPSA_MAX_LUN) { | |
1802 | dev_warn(&h->pdev->dev, | |
1803 | "maximum logical LUNs (%d) exceeded. " | |
1804 | "%d LUNs ignored.\n", HPSA_MAX_LUN, | |
1805 | *nlogicals - HPSA_MAX_LUN); | |
1806 | *nlogicals = HPSA_MAX_LUN; | |
1807 | } | |
1808 | if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) { | |
1809 | dev_warn(&h->pdev->dev, | |
1810 | "maximum logical + physical LUNs (%d) exceeded. " | |
1811 | "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, | |
1812 | *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN); | |
1813 | *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals; | |
1814 | } | |
1815 | return 0; | |
1816 | } | |
1817 | ||
339b2b14 SC |
1818 | u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position, int i, |
1819 | int nphysicals, int nlogicals, struct ReportLUNdata *physdev_list, | |
1820 | struct ReportLUNdata *logdev_list) | |
1821 | { | |
1822 | /* Helper function, figure out where the LUN ID info is coming from | |
1823 | * given index i, lists of physical and logical devices, where in | |
1824 | * the list the raid controller is supposed to appear (first or last) | |
1825 | */ | |
1826 | ||
1827 | int logicals_start = nphysicals + (raid_ctlr_position == 0); | |
1828 | int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0); | |
1829 | ||
1830 | if (i == raid_ctlr_position) | |
1831 | return RAID_CTLR_LUNID; | |
1832 | ||
1833 | if (i < logicals_start) | |
1834 | return &physdev_list->LUN[i - (raid_ctlr_position == 0)][0]; | |
1835 | ||
1836 | if (i < last_device) | |
1837 | return &logdev_list->LUN[i - nphysicals - | |
1838 | (raid_ctlr_position == 0)][0]; | |
1839 | BUG(); | |
1840 | return NULL; | |
1841 | } | |
1842 | ||
edd16368 SC |
1843 | static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno) |
1844 | { | |
1845 | /* the idea here is we could get notified | |
1846 | * that some devices have changed, so we do a report | |
1847 | * physical luns and report logical luns cmd, and adjust | |
1848 | * our list of devices accordingly. | |
1849 | * | |
1850 | * The scsi3addr's of devices won't change so long as the | |
1851 | * adapter is not reset. That means we can rescan and | |
1852 | * tell which devices we already know about, vs. new | |
1853 | * devices, vs. disappearing devices. | |
1854 | */ | |
1855 | struct ReportLUNdata *physdev_list = NULL; | |
1856 | struct ReportLUNdata *logdev_list = NULL; | |
01a02ffc SC |
1857 | u32 nphysicals = 0; |
1858 | u32 nlogicals = 0; | |
1859 | u32 ndev_allocated = 0; | |
edd16368 SC |
1860 | struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice; |
1861 | int ncurrent = 0; | |
1862 | int reportlunsize = sizeof(*physdev_list) + HPSA_MAX_PHYS_LUN * 8; | |
1863 | int i, nmsa2xxx_enclosures, ndevs_to_allocate; | |
1864 | int bus, target, lun; | |
339b2b14 | 1865 | int raid_ctlr_position; |
edd16368 SC |
1866 | DECLARE_BITMAP(lunzerobits, HPSA_MAX_TARGETS_PER_CTLR); |
1867 | ||
cfe5badc | 1868 | currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_DEVICES, GFP_KERNEL); |
edd16368 SC |
1869 | physdev_list = kzalloc(reportlunsize, GFP_KERNEL); |
1870 | logdev_list = kzalloc(reportlunsize, GFP_KERNEL); | |
edd16368 SC |
1871 | tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL); |
1872 | ||
0b0e1d6c | 1873 | if (!currentsd || !physdev_list || !logdev_list || !tmpdevice) { |
edd16368 SC |
1874 | dev_err(&h->pdev->dev, "out of memory\n"); |
1875 | goto out; | |
1876 | } | |
1877 | memset(lunzerobits, 0, sizeof(lunzerobits)); | |
1878 | ||
1879 | if (hpsa_gather_lun_info(h, reportlunsize, physdev_list, &nphysicals, | |
1880 | logdev_list, &nlogicals)) | |
1881 | goto out; | |
1882 | ||
1883 | /* We might see up to 32 MSA2xxx enclosures, actually 8 of them | |
1884 | * but each of them 4 times through different paths. The plus 1 | |
1885 | * is for the RAID controller. | |
1886 | */ | |
1887 | ndevs_to_allocate = nphysicals + nlogicals + MAX_MSA2XXX_ENCLOSURES + 1; | |
1888 | ||
1889 | /* Allocate the per device structures */ | |
1890 | for (i = 0; i < ndevs_to_allocate; i++) { | |
b7ec021f ST |
1891 | if (i >= HPSA_MAX_DEVICES) { |
1892 | dev_warn(&h->pdev->dev, "maximum devices (%d) exceeded." | |
1893 | " %d devices ignored.\n", HPSA_MAX_DEVICES, | |
1894 | ndevs_to_allocate - HPSA_MAX_DEVICES); | |
1895 | break; | |
1896 | } | |
1897 | ||
edd16368 SC |
1898 | currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL); |
1899 | if (!currentsd[i]) { | |
1900 | dev_warn(&h->pdev->dev, "out of memory at %s:%d\n", | |
1901 | __FILE__, __LINE__); | |
1902 | goto out; | |
1903 | } | |
1904 | ndev_allocated++; | |
1905 | } | |
1906 | ||
339b2b14 SC |
1907 | if (unlikely(is_scsi_rev_5(h))) |
1908 | raid_ctlr_position = 0; | |
1909 | else | |
1910 | raid_ctlr_position = nphysicals + nlogicals; | |
1911 | ||
edd16368 SC |
1912 | /* adjust our table of devices */ |
1913 | nmsa2xxx_enclosures = 0; | |
1914 | for (i = 0; i < nphysicals + nlogicals + 1; i++) { | |
0b0e1d6c | 1915 | u8 *lunaddrbytes, is_OBDR = 0; |
edd16368 SC |
1916 | |
1917 | /* Figure out where the LUN ID info is coming from */ | |
339b2b14 SC |
1918 | lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position, |
1919 | i, nphysicals, nlogicals, physdev_list, logdev_list); | |
edd16368 | 1920 | /* skip masked physical devices. */ |
339b2b14 SC |
1921 | if (lunaddrbytes[3] & 0xC0 && |
1922 | i < nphysicals + (raid_ctlr_position == 0)) | |
edd16368 SC |
1923 | continue; |
1924 | ||
1925 | /* Get device type, vendor, model, device id */ | |
0b0e1d6c SC |
1926 | if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice, |
1927 | &is_OBDR)) | |
edd16368 SC |
1928 | continue; /* skip it if we can't talk to it. */ |
1929 | figure_bus_target_lun(h, lunaddrbytes, &bus, &target, &lun, | |
1930 | tmpdevice); | |
1931 | this_device = currentsd[ncurrent]; | |
1932 | ||
1933 | /* | |
1934 | * For the msa2xxx boxes, we have to insert a LUN 0 which | |
1935 | * doesn't show up in CCISS_REPORT_PHYSICAL data, but there | |
1936 | * is nonetheless an enclosure device there. We have to | |
1937 | * present that otherwise linux won't find anything if | |
1938 | * there is no lun 0. | |
1939 | */ | |
1940 | if (add_msa2xxx_enclosure_device(h, tmpdevice, this_device, | |
1941 | lunaddrbytes, bus, target, lun, lunzerobits, | |
1942 | &nmsa2xxx_enclosures)) { | |
1943 | ncurrent++; | |
1944 | this_device = currentsd[ncurrent]; | |
1945 | } | |
1946 | ||
1947 | *this_device = *tmpdevice; | |
1948 | hpsa_set_bus_target_lun(this_device, bus, target, lun); | |
1949 | ||
1950 | switch (this_device->devtype) { | |
0b0e1d6c | 1951 | case TYPE_ROM: |
edd16368 SC |
1952 | /* We don't *really* support actual CD-ROM devices, |
1953 | * just "One Button Disaster Recovery" tape drive | |
1954 | * which temporarily pretends to be a CD-ROM drive. | |
1955 | * So we check that the device is really an OBDR tape | |
1956 | * device by checking for "$DR-10" in bytes 43-48 of | |
1957 | * the inquiry data. | |
1958 | */ | |
0b0e1d6c SC |
1959 | if (is_OBDR) |
1960 | ncurrent++; | |
edd16368 SC |
1961 | break; |
1962 | case TYPE_DISK: | |
1963 | if (i < nphysicals) | |
1964 | break; | |
1965 | ncurrent++; | |
1966 | break; | |
1967 | case TYPE_TAPE: | |
1968 | case TYPE_MEDIUM_CHANGER: | |
1969 | ncurrent++; | |
1970 | break; | |
1971 | case TYPE_RAID: | |
1972 | /* Only present the Smartarray HBA as a RAID controller. | |
1973 | * If it's a RAID controller other than the HBA itself | |
1974 | * (an external RAID controller, MSA500 or similar) | |
1975 | * don't present it. | |
1976 | */ | |
1977 | if (!is_hba_lunid(lunaddrbytes)) | |
1978 | break; | |
1979 | ncurrent++; | |
1980 | break; | |
1981 | default: | |
1982 | break; | |
1983 | } | |
cfe5badc | 1984 | if (ncurrent >= HPSA_MAX_DEVICES) |
edd16368 SC |
1985 | break; |
1986 | } | |
1987 | adjust_hpsa_scsi_table(h, hostno, currentsd, ncurrent); | |
1988 | out: | |
1989 | kfree(tmpdevice); | |
1990 | for (i = 0; i < ndev_allocated; i++) | |
1991 | kfree(currentsd[i]); | |
1992 | kfree(currentsd); | |
edd16368 SC |
1993 | kfree(physdev_list); |
1994 | kfree(logdev_list); | |
edd16368 SC |
1995 | } |
1996 | ||
1997 | /* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci | |
1998 | * dma mapping and fills in the scatter gather entries of the | |
1999 | * hpsa command, cp. | |
2000 | */ | |
33a2ffce | 2001 | static int hpsa_scatter_gather(struct ctlr_info *h, |
edd16368 SC |
2002 | struct CommandList *cp, |
2003 | struct scsi_cmnd *cmd) | |
2004 | { | |
2005 | unsigned int len; | |
2006 | struct scatterlist *sg; | |
01a02ffc | 2007 | u64 addr64; |
33a2ffce SC |
2008 | int use_sg, i, sg_index, chained; |
2009 | struct SGDescriptor *curr_sg; | |
edd16368 | 2010 | |
33a2ffce | 2011 | BUG_ON(scsi_sg_count(cmd) > h->maxsgentries); |
edd16368 SC |
2012 | |
2013 | use_sg = scsi_dma_map(cmd); | |
2014 | if (use_sg < 0) | |
2015 | return use_sg; | |
2016 | ||
2017 | if (!use_sg) | |
2018 | goto sglist_finished; | |
2019 | ||
33a2ffce SC |
2020 | curr_sg = cp->SG; |
2021 | chained = 0; | |
2022 | sg_index = 0; | |
edd16368 | 2023 | scsi_for_each_sg(cmd, sg, use_sg, i) { |
33a2ffce SC |
2024 | if (i == h->max_cmd_sg_entries - 1 && |
2025 | use_sg > h->max_cmd_sg_entries) { | |
2026 | chained = 1; | |
2027 | curr_sg = h->cmd_sg_list[cp->cmdindex]; | |
2028 | sg_index = 0; | |
2029 | } | |
01a02ffc | 2030 | addr64 = (u64) sg_dma_address(sg); |
edd16368 | 2031 | len = sg_dma_len(sg); |
33a2ffce SC |
2032 | curr_sg->Addr.lower = (u32) (addr64 & 0x0FFFFFFFFULL); |
2033 | curr_sg->Addr.upper = (u32) ((addr64 >> 32) & 0x0FFFFFFFFULL); | |
2034 | curr_sg->Len = len; | |
2035 | curr_sg->Ext = 0; /* we are not chaining */ | |
2036 | curr_sg++; | |
2037 | } | |
2038 | ||
2039 | if (use_sg + chained > h->maxSG) | |
2040 | h->maxSG = use_sg + chained; | |
2041 | ||
2042 | if (chained) { | |
2043 | cp->Header.SGList = h->max_cmd_sg_entries; | |
2044 | cp->Header.SGTotal = (u16) (use_sg + 1); | |
2045 | hpsa_map_sg_chain_block(h, cp); | |
2046 | return 0; | |
edd16368 SC |
2047 | } |
2048 | ||
2049 | sglist_finished: | |
2050 | ||
01a02ffc SC |
2051 | cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */ |
2052 | cp->Header.SGTotal = (u16) use_sg; /* total sgs in this cmd list */ | |
edd16368 SC |
2053 | return 0; |
2054 | } | |
2055 | ||
2056 | ||
f281233d | 2057 | static int hpsa_scsi_queue_command_lck(struct scsi_cmnd *cmd, |
edd16368 SC |
2058 | void (*done)(struct scsi_cmnd *)) |
2059 | { | |
2060 | struct ctlr_info *h; | |
2061 | struct hpsa_scsi_dev_t *dev; | |
2062 | unsigned char scsi3addr[8]; | |
2063 | struct CommandList *c; | |
2064 | unsigned long flags; | |
2065 | ||
2066 | /* Get the ptr to our adapter structure out of cmd->host. */ | |
2067 | h = sdev_to_hba(cmd->device); | |
2068 | dev = cmd->device->hostdata; | |
2069 | if (!dev) { | |
2070 | cmd->result = DID_NO_CONNECT << 16; | |
2071 | done(cmd); | |
2072 | return 0; | |
2073 | } | |
2074 | memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr)); | |
2075 | ||
edd16368 | 2076 | spin_lock_irqsave(&h->lock, flags); |
a0c12413 SC |
2077 | if (unlikely(h->lockup_detected)) { |
2078 | spin_unlock_irqrestore(&h->lock, flags); | |
2079 | cmd->result = DID_ERROR << 16; | |
2080 | done(cmd); | |
2081 | return 0; | |
2082 | } | |
2083 | /* Need a lock as this is being allocated from the pool */ | |
edd16368 SC |
2084 | c = cmd_alloc(h); |
2085 | spin_unlock_irqrestore(&h->lock, flags); | |
2086 | if (c == NULL) { /* trouble... */ | |
2087 | dev_err(&h->pdev->dev, "cmd_alloc returned NULL!\n"); | |
2088 | return SCSI_MLQUEUE_HOST_BUSY; | |
2089 | } | |
2090 | ||
2091 | /* Fill in the command list header */ | |
2092 | ||
2093 | cmd->scsi_done = done; /* save this for use by completion code */ | |
2094 | ||
2095 | /* save c in case we have to abort it */ | |
2096 | cmd->host_scribble = (unsigned char *) c; | |
2097 | ||
2098 | c->cmd_type = CMD_SCSI; | |
2099 | c->scsi_cmd = cmd; | |
2100 | c->Header.ReplyQueue = 0; /* unused in simple mode */ | |
2101 | memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8); | |
303932fd DB |
2102 | c->Header.Tag.lower = (c->cmdindex << DIRECT_LOOKUP_SHIFT); |
2103 | c->Header.Tag.lower |= DIRECT_LOOKUP_BIT; | |
edd16368 SC |
2104 | |
2105 | /* Fill in the request block... */ | |
2106 | ||
2107 | c->Request.Timeout = 0; | |
2108 | memset(c->Request.CDB, 0, sizeof(c->Request.CDB)); | |
2109 | BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB)); | |
2110 | c->Request.CDBLen = cmd->cmd_len; | |
2111 | memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len); | |
2112 | c->Request.Type.Type = TYPE_CMD; | |
2113 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2114 | switch (cmd->sc_data_direction) { | |
2115 | case DMA_TO_DEVICE: | |
2116 | c->Request.Type.Direction = XFER_WRITE; | |
2117 | break; | |
2118 | case DMA_FROM_DEVICE: | |
2119 | c->Request.Type.Direction = XFER_READ; | |
2120 | break; | |
2121 | case DMA_NONE: | |
2122 | c->Request.Type.Direction = XFER_NONE; | |
2123 | break; | |
2124 | case DMA_BIDIRECTIONAL: | |
2125 | /* This can happen if a buggy application does a scsi passthru | |
2126 | * and sets both inlen and outlen to non-zero. ( see | |
2127 | * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() ) | |
2128 | */ | |
2129 | ||
2130 | c->Request.Type.Direction = XFER_RSVD; | |
2131 | /* This is technically wrong, and hpsa controllers should | |
2132 | * reject it with CMD_INVALID, which is the most correct | |
2133 | * response, but non-fibre backends appear to let it | |
2134 | * slide by, and give the same results as if this field | |
2135 | * were set correctly. Either way is acceptable for | |
2136 | * our purposes here. | |
2137 | */ | |
2138 | ||
2139 | break; | |
2140 | ||
2141 | default: | |
2142 | dev_err(&h->pdev->dev, "unknown data direction: %d\n", | |
2143 | cmd->sc_data_direction); | |
2144 | BUG(); | |
2145 | break; | |
2146 | } | |
2147 | ||
33a2ffce | 2148 | if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */ |
edd16368 SC |
2149 | cmd_free(h, c); |
2150 | return SCSI_MLQUEUE_HOST_BUSY; | |
2151 | } | |
2152 | enqueue_cmd_and_start_io(h, c); | |
2153 | /* the cmd'll come back via intr handler in complete_scsi_command() */ | |
2154 | return 0; | |
2155 | } | |
2156 | ||
f281233d JG |
2157 | static DEF_SCSI_QCMD(hpsa_scsi_queue_command) |
2158 | ||
a08a8471 SC |
2159 | static void hpsa_scan_start(struct Scsi_Host *sh) |
2160 | { | |
2161 | struct ctlr_info *h = shost_to_hba(sh); | |
2162 | unsigned long flags; | |
2163 | ||
2164 | /* wait until any scan already in progress is finished. */ | |
2165 | while (1) { | |
2166 | spin_lock_irqsave(&h->scan_lock, flags); | |
2167 | if (h->scan_finished) | |
2168 | break; | |
2169 | spin_unlock_irqrestore(&h->scan_lock, flags); | |
2170 | wait_event(h->scan_wait_queue, h->scan_finished); | |
2171 | /* Note: We don't need to worry about a race between this | |
2172 | * thread and driver unload because the midlayer will | |
2173 | * have incremented the reference count, so unload won't | |
2174 | * happen if we're in here. | |
2175 | */ | |
2176 | } | |
2177 | h->scan_finished = 0; /* mark scan as in progress */ | |
2178 | spin_unlock_irqrestore(&h->scan_lock, flags); | |
2179 | ||
2180 | hpsa_update_scsi_devices(h, h->scsi_host->host_no); | |
2181 | ||
2182 | spin_lock_irqsave(&h->scan_lock, flags); | |
2183 | h->scan_finished = 1; /* mark scan as finished. */ | |
2184 | wake_up_all(&h->scan_wait_queue); | |
2185 | spin_unlock_irqrestore(&h->scan_lock, flags); | |
2186 | } | |
2187 | ||
2188 | static int hpsa_scan_finished(struct Scsi_Host *sh, | |
2189 | unsigned long elapsed_time) | |
2190 | { | |
2191 | struct ctlr_info *h = shost_to_hba(sh); | |
2192 | unsigned long flags; | |
2193 | int finished; | |
2194 | ||
2195 | spin_lock_irqsave(&h->scan_lock, flags); | |
2196 | finished = h->scan_finished; | |
2197 | spin_unlock_irqrestore(&h->scan_lock, flags); | |
2198 | return finished; | |
2199 | } | |
2200 | ||
667e23d4 SC |
2201 | static int hpsa_change_queue_depth(struct scsi_device *sdev, |
2202 | int qdepth, int reason) | |
2203 | { | |
2204 | struct ctlr_info *h = sdev_to_hba(sdev); | |
2205 | ||
2206 | if (reason != SCSI_QDEPTH_DEFAULT) | |
2207 | return -ENOTSUPP; | |
2208 | ||
2209 | if (qdepth < 1) | |
2210 | qdepth = 1; | |
2211 | else | |
2212 | if (qdepth > h->nr_cmds) | |
2213 | qdepth = h->nr_cmds; | |
2214 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); | |
2215 | return sdev->queue_depth; | |
2216 | } | |
2217 | ||
edd16368 SC |
2218 | static void hpsa_unregister_scsi(struct ctlr_info *h) |
2219 | { | |
2220 | /* we are being forcibly unloaded, and may not refuse. */ | |
2221 | scsi_remove_host(h->scsi_host); | |
2222 | scsi_host_put(h->scsi_host); | |
2223 | h->scsi_host = NULL; | |
2224 | } | |
2225 | ||
2226 | static int hpsa_register_scsi(struct ctlr_info *h) | |
2227 | { | |
2228 | int rc; | |
2229 | ||
edd16368 SC |
2230 | rc = hpsa_scsi_detect(h); |
2231 | if (rc != 0) | |
2232 | dev_err(&h->pdev->dev, "hpsa_register_scsi: failed" | |
2233 | " hpsa_scsi_detect(), rc is %d\n", rc); | |
2234 | return rc; | |
2235 | } | |
2236 | ||
2237 | static int wait_for_device_to_become_ready(struct ctlr_info *h, | |
2238 | unsigned char lunaddr[]) | |
2239 | { | |
2240 | int rc = 0; | |
2241 | int count = 0; | |
2242 | int waittime = 1; /* seconds */ | |
2243 | struct CommandList *c; | |
2244 | ||
2245 | c = cmd_special_alloc(h); | |
2246 | if (!c) { | |
2247 | dev_warn(&h->pdev->dev, "out of memory in " | |
2248 | "wait_for_device_to_become_ready.\n"); | |
2249 | return IO_ERROR; | |
2250 | } | |
2251 | ||
2252 | /* Send test unit ready until device ready, or give up. */ | |
2253 | while (count < HPSA_TUR_RETRY_LIMIT) { | |
2254 | ||
2255 | /* Wait for a bit. do this first, because if we send | |
2256 | * the TUR right away, the reset will just abort it. | |
2257 | */ | |
2258 | msleep(1000 * waittime); | |
2259 | count++; | |
2260 | ||
2261 | /* Increase wait time with each try, up to a point. */ | |
2262 | if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS) | |
2263 | waittime = waittime * 2; | |
2264 | ||
2265 | /* Send the Test Unit Ready */ | |
2266 | fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, lunaddr, TYPE_CMD); | |
2267 | hpsa_scsi_do_simple_cmd_core(h, c); | |
2268 | /* no unmap needed here because no data xfer. */ | |
2269 | ||
2270 | if (c->err_info->CommandStatus == CMD_SUCCESS) | |
2271 | break; | |
2272 | ||
2273 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && | |
2274 | c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION && | |
2275 | (c->err_info->SenseInfo[2] == NO_SENSE || | |
2276 | c->err_info->SenseInfo[2] == UNIT_ATTENTION)) | |
2277 | break; | |
2278 | ||
2279 | dev_warn(&h->pdev->dev, "waiting %d secs " | |
2280 | "for device to become ready.\n", waittime); | |
2281 | rc = 1; /* device not ready. */ | |
2282 | } | |
2283 | ||
2284 | if (rc) | |
2285 | dev_warn(&h->pdev->dev, "giving up on device.\n"); | |
2286 | else | |
2287 | dev_warn(&h->pdev->dev, "device is ready.\n"); | |
2288 | ||
2289 | cmd_special_free(h, c); | |
2290 | return rc; | |
2291 | } | |
2292 | ||
2293 | /* Need at least one of these error handlers to keep ../scsi/hosts.c from | |
2294 | * complaining. Doing a host- or bus-reset can't do anything good here. | |
2295 | */ | |
2296 | static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) | |
2297 | { | |
2298 | int rc; | |
2299 | struct ctlr_info *h; | |
2300 | struct hpsa_scsi_dev_t *dev; | |
2301 | ||
2302 | /* find the controller to which the command to be aborted was sent */ | |
2303 | h = sdev_to_hba(scsicmd->device); | |
2304 | if (h == NULL) /* paranoia */ | |
2305 | return FAILED; | |
edd16368 SC |
2306 | dev = scsicmd->device->hostdata; |
2307 | if (!dev) { | |
2308 | dev_err(&h->pdev->dev, "hpsa_eh_device_reset_handler: " | |
2309 | "device lookup failed.\n"); | |
2310 | return FAILED; | |
2311 | } | |
d416b0c7 SC |
2312 | dev_warn(&h->pdev->dev, "resetting device %d:%d:%d:%d\n", |
2313 | h->scsi_host->host_no, dev->bus, dev->target, dev->lun); | |
edd16368 SC |
2314 | /* send a reset to the SCSI LUN which the command was sent to */ |
2315 | rc = hpsa_send_reset(h, dev->scsi3addr); | |
2316 | if (rc == 0 && wait_for_device_to_become_ready(h, dev->scsi3addr) == 0) | |
2317 | return SUCCESS; | |
2318 | ||
2319 | dev_warn(&h->pdev->dev, "resetting device failed.\n"); | |
2320 | return FAILED; | |
2321 | } | |
2322 | ||
2323 | /* | |
2324 | * For operations that cannot sleep, a command block is allocated at init, | |
2325 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track | |
2326 | * which ones are free or in use. Lock must be held when calling this. | |
2327 | * cmd_free() is the complement. | |
2328 | */ | |
2329 | static struct CommandList *cmd_alloc(struct ctlr_info *h) | |
2330 | { | |
2331 | struct CommandList *c; | |
2332 | int i; | |
2333 | union u64bit temp64; | |
2334 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
2335 | ||
2336 | do { | |
2337 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); | |
2338 | if (i == h->nr_cmds) | |
2339 | return NULL; | |
2340 | } while (test_and_set_bit | |
2341 | (i & (BITS_PER_LONG - 1), | |
2342 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
2343 | c = h->cmd_pool + i; | |
2344 | memset(c, 0, sizeof(*c)); | |
2345 | cmd_dma_handle = h->cmd_pool_dhandle | |
2346 | + i * sizeof(*c); | |
2347 | c->err_info = h->errinfo_pool + i; | |
2348 | memset(c->err_info, 0, sizeof(*c->err_info)); | |
2349 | err_dma_handle = h->errinfo_pool_dhandle | |
2350 | + i * sizeof(*c->err_info); | |
2351 | h->nr_allocs++; | |
2352 | ||
2353 | c->cmdindex = i; | |
2354 | ||
9e0fc764 | 2355 | INIT_LIST_HEAD(&c->list); |
01a02ffc SC |
2356 | c->busaddr = (u32) cmd_dma_handle; |
2357 | temp64.val = (u64) err_dma_handle; | |
edd16368 SC |
2358 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
2359 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
2360 | c->ErrDesc.Len = sizeof(*c->err_info); | |
2361 | ||
2362 | c->h = h; | |
2363 | return c; | |
2364 | } | |
2365 | ||
2366 | /* For operations that can wait for kmalloc to possibly sleep, | |
2367 | * this routine can be called. Lock need not be held to call | |
2368 | * cmd_special_alloc. cmd_special_free() is the complement. | |
2369 | */ | |
2370 | static struct CommandList *cmd_special_alloc(struct ctlr_info *h) | |
2371 | { | |
2372 | struct CommandList *c; | |
2373 | union u64bit temp64; | |
2374 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
2375 | ||
2376 | c = pci_alloc_consistent(h->pdev, sizeof(*c), &cmd_dma_handle); | |
2377 | if (c == NULL) | |
2378 | return NULL; | |
2379 | memset(c, 0, sizeof(*c)); | |
2380 | ||
2381 | c->cmdindex = -1; | |
2382 | ||
2383 | c->err_info = pci_alloc_consistent(h->pdev, sizeof(*c->err_info), | |
2384 | &err_dma_handle); | |
2385 | ||
2386 | if (c->err_info == NULL) { | |
2387 | pci_free_consistent(h->pdev, | |
2388 | sizeof(*c), c, cmd_dma_handle); | |
2389 | return NULL; | |
2390 | } | |
2391 | memset(c->err_info, 0, sizeof(*c->err_info)); | |
2392 | ||
9e0fc764 | 2393 | INIT_LIST_HEAD(&c->list); |
01a02ffc SC |
2394 | c->busaddr = (u32) cmd_dma_handle; |
2395 | temp64.val = (u64) err_dma_handle; | |
edd16368 SC |
2396 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
2397 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
2398 | c->ErrDesc.Len = sizeof(*c->err_info); | |
2399 | ||
2400 | c->h = h; | |
2401 | return c; | |
2402 | } | |
2403 | ||
2404 | static void cmd_free(struct ctlr_info *h, struct CommandList *c) | |
2405 | { | |
2406 | int i; | |
2407 | ||
2408 | i = c - h->cmd_pool; | |
2409 | clear_bit(i & (BITS_PER_LONG - 1), | |
2410 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
2411 | h->nr_frees++; | |
2412 | } | |
2413 | ||
2414 | static void cmd_special_free(struct ctlr_info *h, struct CommandList *c) | |
2415 | { | |
2416 | union u64bit temp64; | |
2417 | ||
2418 | temp64.val32.lower = c->ErrDesc.Addr.lower; | |
2419 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
2420 | pci_free_consistent(h->pdev, sizeof(*c->err_info), | |
2421 | c->err_info, (dma_addr_t) temp64.val); | |
2422 | pci_free_consistent(h->pdev, sizeof(*c), | |
d896f3f3 | 2423 | c, (dma_addr_t) (c->busaddr & DIRECT_LOOKUP_MASK)); |
edd16368 SC |
2424 | } |
2425 | ||
2426 | #ifdef CONFIG_COMPAT | |
2427 | ||
edd16368 SC |
2428 | static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, void *arg) |
2429 | { | |
2430 | IOCTL32_Command_struct __user *arg32 = | |
2431 | (IOCTL32_Command_struct __user *) arg; | |
2432 | IOCTL_Command_struct arg64; | |
2433 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
2434 | int err; | |
2435 | u32 cp; | |
2436 | ||
938abd84 | 2437 | memset(&arg64, 0, sizeof(arg64)); |
edd16368 SC |
2438 | err = 0; |
2439 | err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
2440 | sizeof(arg64.LUN_info)); | |
2441 | err |= copy_from_user(&arg64.Request, &arg32->Request, | |
2442 | sizeof(arg64.Request)); | |
2443 | err |= copy_from_user(&arg64.error_info, &arg32->error_info, | |
2444 | sizeof(arg64.error_info)); | |
2445 | err |= get_user(arg64.buf_size, &arg32->buf_size); | |
2446 | err |= get_user(cp, &arg32->buf); | |
2447 | arg64.buf = compat_ptr(cp); | |
2448 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
2449 | ||
2450 | if (err) | |
2451 | return -EFAULT; | |
2452 | ||
e39eeaed | 2453 | err = hpsa_ioctl(dev, CCISS_PASSTHRU, (void *)p); |
edd16368 SC |
2454 | if (err) |
2455 | return err; | |
2456 | err |= copy_in_user(&arg32->error_info, &p->error_info, | |
2457 | sizeof(arg32->error_info)); | |
2458 | if (err) | |
2459 | return -EFAULT; | |
2460 | return err; | |
2461 | } | |
2462 | ||
2463 | static int hpsa_ioctl32_big_passthru(struct scsi_device *dev, | |
2464 | int cmd, void *arg) | |
2465 | { | |
2466 | BIG_IOCTL32_Command_struct __user *arg32 = | |
2467 | (BIG_IOCTL32_Command_struct __user *) arg; | |
2468 | BIG_IOCTL_Command_struct arg64; | |
2469 | BIG_IOCTL_Command_struct __user *p = | |
2470 | compat_alloc_user_space(sizeof(arg64)); | |
2471 | int err; | |
2472 | u32 cp; | |
2473 | ||
938abd84 | 2474 | memset(&arg64, 0, sizeof(arg64)); |
edd16368 SC |
2475 | err = 0; |
2476 | err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
2477 | sizeof(arg64.LUN_info)); | |
2478 | err |= copy_from_user(&arg64.Request, &arg32->Request, | |
2479 | sizeof(arg64.Request)); | |
2480 | err |= copy_from_user(&arg64.error_info, &arg32->error_info, | |
2481 | sizeof(arg64.error_info)); | |
2482 | err |= get_user(arg64.buf_size, &arg32->buf_size); | |
2483 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
2484 | err |= get_user(cp, &arg32->buf); | |
2485 | arg64.buf = compat_ptr(cp); | |
2486 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
2487 | ||
2488 | if (err) | |
2489 | return -EFAULT; | |
2490 | ||
e39eeaed | 2491 | err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, (void *)p); |
edd16368 SC |
2492 | if (err) |
2493 | return err; | |
2494 | err |= copy_in_user(&arg32->error_info, &p->error_info, | |
2495 | sizeof(arg32->error_info)); | |
2496 | if (err) | |
2497 | return -EFAULT; | |
2498 | return err; | |
2499 | } | |
71fe75a7 SC |
2500 | |
2501 | static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg) | |
2502 | { | |
2503 | switch (cmd) { | |
2504 | case CCISS_GETPCIINFO: | |
2505 | case CCISS_GETINTINFO: | |
2506 | case CCISS_SETINTINFO: | |
2507 | case CCISS_GETNODENAME: | |
2508 | case CCISS_SETNODENAME: | |
2509 | case CCISS_GETHEARTBEAT: | |
2510 | case CCISS_GETBUSTYPES: | |
2511 | case CCISS_GETFIRMVER: | |
2512 | case CCISS_GETDRIVVER: | |
2513 | case CCISS_REVALIDVOLS: | |
2514 | case CCISS_DEREGDISK: | |
2515 | case CCISS_REGNEWDISK: | |
2516 | case CCISS_REGNEWD: | |
2517 | case CCISS_RESCANDISK: | |
2518 | case CCISS_GETLUNINFO: | |
2519 | return hpsa_ioctl(dev, cmd, arg); | |
2520 | ||
2521 | case CCISS_PASSTHRU32: | |
2522 | return hpsa_ioctl32_passthru(dev, cmd, arg); | |
2523 | case CCISS_BIG_PASSTHRU32: | |
2524 | return hpsa_ioctl32_big_passthru(dev, cmd, arg); | |
2525 | ||
2526 | default: | |
2527 | return -ENOIOCTLCMD; | |
2528 | } | |
2529 | } | |
edd16368 SC |
2530 | #endif |
2531 | ||
2532 | static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp) | |
2533 | { | |
2534 | struct hpsa_pci_info pciinfo; | |
2535 | ||
2536 | if (!argp) | |
2537 | return -EINVAL; | |
2538 | pciinfo.domain = pci_domain_nr(h->pdev->bus); | |
2539 | pciinfo.bus = h->pdev->bus->number; | |
2540 | pciinfo.dev_fn = h->pdev->devfn; | |
2541 | pciinfo.board_id = h->board_id; | |
2542 | if (copy_to_user(argp, &pciinfo, sizeof(pciinfo))) | |
2543 | return -EFAULT; | |
2544 | return 0; | |
2545 | } | |
2546 | ||
2547 | static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp) | |
2548 | { | |
2549 | DriverVer_type DriverVer; | |
2550 | unsigned char vmaj, vmin, vsubmin; | |
2551 | int rc; | |
2552 | ||
2553 | rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu", | |
2554 | &vmaj, &vmin, &vsubmin); | |
2555 | if (rc != 3) { | |
2556 | dev_info(&h->pdev->dev, "driver version string '%s' " | |
2557 | "unrecognized.", HPSA_DRIVER_VERSION); | |
2558 | vmaj = 0; | |
2559 | vmin = 0; | |
2560 | vsubmin = 0; | |
2561 | } | |
2562 | DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin; | |
2563 | if (!argp) | |
2564 | return -EINVAL; | |
2565 | if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type))) | |
2566 | return -EFAULT; | |
2567 | return 0; | |
2568 | } | |
2569 | ||
2570 | static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp) | |
2571 | { | |
2572 | IOCTL_Command_struct iocommand; | |
2573 | struct CommandList *c; | |
2574 | char *buff = NULL; | |
2575 | union u64bit temp64; | |
2576 | ||
2577 | if (!argp) | |
2578 | return -EINVAL; | |
2579 | if (!capable(CAP_SYS_RAWIO)) | |
2580 | return -EPERM; | |
2581 | if (copy_from_user(&iocommand, argp, sizeof(iocommand))) | |
2582 | return -EFAULT; | |
2583 | if ((iocommand.buf_size < 1) && | |
2584 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
2585 | return -EINVAL; | |
2586 | } | |
2587 | if (iocommand.buf_size > 0) { | |
2588 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
2589 | if (buff == NULL) | |
2590 | return -EFAULT; | |
b03a7771 SC |
2591 | if (iocommand.Request.Type.Direction == XFER_WRITE) { |
2592 | /* Copy the data into the buffer we created */ | |
2593 | if (copy_from_user(buff, iocommand.buf, | |
2594 | iocommand.buf_size)) { | |
2595 | kfree(buff); | |
2596 | return -EFAULT; | |
2597 | } | |
2598 | } else { | |
2599 | memset(buff, 0, iocommand.buf_size); | |
edd16368 | 2600 | } |
b03a7771 | 2601 | } |
edd16368 SC |
2602 | c = cmd_special_alloc(h); |
2603 | if (c == NULL) { | |
2604 | kfree(buff); | |
2605 | return -ENOMEM; | |
2606 | } | |
2607 | /* Fill in the command type */ | |
2608 | c->cmd_type = CMD_IOCTL_PEND; | |
2609 | /* Fill in Command Header */ | |
2610 | c->Header.ReplyQueue = 0; /* unused in simple mode */ | |
2611 | if (iocommand.buf_size > 0) { /* buffer to fill */ | |
2612 | c->Header.SGList = 1; | |
2613 | c->Header.SGTotal = 1; | |
2614 | } else { /* no buffers to fill */ | |
2615 | c->Header.SGList = 0; | |
2616 | c->Header.SGTotal = 0; | |
2617 | } | |
2618 | memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN)); | |
2619 | /* use the kernel address the cmd block for tag */ | |
2620 | c->Header.Tag.lower = c->busaddr; | |
2621 | ||
2622 | /* Fill in Request block */ | |
2623 | memcpy(&c->Request, &iocommand.Request, | |
2624 | sizeof(c->Request)); | |
2625 | ||
2626 | /* Fill in the scatter gather information */ | |
2627 | if (iocommand.buf_size > 0) { | |
2628 | temp64.val = pci_map_single(h->pdev, buff, | |
2629 | iocommand.buf_size, PCI_DMA_BIDIRECTIONAL); | |
2630 | c->SG[0].Addr.lower = temp64.val32.lower; | |
2631 | c->SG[0].Addr.upper = temp64.val32.upper; | |
2632 | c->SG[0].Len = iocommand.buf_size; | |
2633 | c->SG[0].Ext = 0; /* we are not chaining*/ | |
2634 | } | |
a0c12413 | 2635 | hpsa_scsi_do_simple_cmd_core_if_no_lockup(h, c); |
c2dd32e0 SC |
2636 | if (iocommand.buf_size > 0) |
2637 | hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL); | |
edd16368 SC |
2638 | check_ioctl_unit_attention(h, c); |
2639 | ||
2640 | /* Copy the error information out */ | |
2641 | memcpy(&iocommand.error_info, c->err_info, | |
2642 | sizeof(iocommand.error_info)); | |
2643 | if (copy_to_user(argp, &iocommand, sizeof(iocommand))) { | |
2644 | kfree(buff); | |
2645 | cmd_special_free(h, c); | |
2646 | return -EFAULT; | |
2647 | } | |
b03a7771 SC |
2648 | if (iocommand.Request.Type.Direction == XFER_READ && |
2649 | iocommand.buf_size > 0) { | |
edd16368 SC |
2650 | /* Copy the data out of the buffer we created */ |
2651 | if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) { | |
2652 | kfree(buff); | |
2653 | cmd_special_free(h, c); | |
2654 | return -EFAULT; | |
2655 | } | |
2656 | } | |
2657 | kfree(buff); | |
2658 | cmd_special_free(h, c); | |
2659 | return 0; | |
2660 | } | |
2661 | ||
2662 | static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp) | |
2663 | { | |
2664 | BIG_IOCTL_Command_struct *ioc; | |
2665 | struct CommandList *c; | |
2666 | unsigned char **buff = NULL; | |
2667 | int *buff_size = NULL; | |
2668 | union u64bit temp64; | |
2669 | BYTE sg_used = 0; | |
2670 | int status = 0; | |
2671 | int i; | |
01a02ffc SC |
2672 | u32 left; |
2673 | u32 sz; | |
edd16368 SC |
2674 | BYTE __user *data_ptr; |
2675 | ||
2676 | if (!argp) | |
2677 | return -EINVAL; | |
2678 | if (!capable(CAP_SYS_RAWIO)) | |
2679 | return -EPERM; | |
2680 | ioc = (BIG_IOCTL_Command_struct *) | |
2681 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
2682 | if (!ioc) { | |
2683 | status = -ENOMEM; | |
2684 | goto cleanup1; | |
2685 | } | |
2686 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
2687 | status = -EFAULT; | |
2688 | goto cleanup1; | |
2689 | } | |
2690 | if ((ioc->buf_size < 1) && | |
2691 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
2692 | status = -EINVAL; | |
2693 | goto cleanup1; | |
2694 | } | |
2695 | /* Check kmalloc limits using all SGs */ | |
2696 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
2697 | status = -EINVAL; | |
2698 | goto cleanup1; | |
2699 | } | |
2700 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
2701 | status = -EINVAL; | |
2702 | goto cleanup1; | |
2703 | } | |
2704 | buff = kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
2705 | if (!buff) { | |
2706 | status = -ENOMEM; | |
2707 | goto cleanup1; | |
2708 | } | |
2709 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), GFP_KERNEL); | |
2710 | if (!buff_size) { | |
2711 | status = -ENOMEM; | |
2712 | goto cleanup1; | |
2713 | } | |
2714 | left = ioc->buf_size; | |
2715 | data_ptr = ioc->buf; | |
2716 | while (left) { | |
2717 | sz = (left > ioc->malloc_size) ? ioc->malloc_size : left; | |
2718 | buff_size[sg_used] = sz; | |
2719 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
2720 | if (buff[sg_used] == NULL) { | |
2721 | status = -ENOMEM; | |
2722 | goto cleanup1; | |
2723 | } | |
2724 | if (ioc->Request.Type.Direction == XFER_WRITE) { | |
2725 | if (copy_from_user(buff[sg_used], data_ptr, sz)) { | |
2726 | status = -ENOMEM; | |
2727 | goto cleanup1; | |
2728 | } | |
2729 | } else | |
2730 | memset(buff[sg_used], 0, sz); | |
2731 | left -= sz; | |
2732 | data_ptr += sz; | |
2733 | sg_used++; | |
2734 | } | |
2735 | c = cmd_special_alloc(h); | |
2736 | if (c == NULL) { | |
2737 | status = -ENOMEM; | |
2738 | goto cleanup1; | |
2739 | } | |
2740 | c->cmd_type = CMD_IOCTL_PEND; | |
2741 | c->Header.ReplyQueue = 0; | |
b03a7771 | 2742 | c->Header.SGList = c->Header.SGTotal = sg_used; |
edd16368 SC |
2743 | memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN)); |
2744 | c->Header.Tag.lower = c->busaddr; | |
2745 | memcpy(&c->Request, &ioc->Request, sizeof(c->Request)); | |
2746 | if (ioc->buf_size > 0) { | |
2747 | int i; | |
2748 | for (i = 0; i < sg_used; i++) { | |
2749 | temp64.val = pci_map_single(h->pdev, buff[i], | |
2750 | buff_size[i], PCI_DMA_BIDIRECTIONAL); | |
2751 | c->SG[i].Addr.lower = temp64.val32.lower; | |
2752 | c->SG[i].Addr.upper = temp64.val32.upper; | |
2753 | c->SG[i].Len = buff_size[i]; | |
2754 | /* we are not chaining */ | |
2755 | c->SG[i].Ext = 0; | |
2756 | } | |
2757 | } | |
a0c12413 | 2758 | hpsa_scsi_do_simple_cmd_core_if_no_lockup(h, c); |
b03a7771 SC |
2759 | if (sg_used) |
2760 | hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL); | |
edd16368 SC |
2761 | check_ioctl_unit_attention(h, c); |
2762 | /* Copy the error information out */ | |
2763 | memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info)); | |
2764 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
2765 | cmd_special_free(h, c); | |
2766 | status = -EFAULT; | |
2767 | goto cleanup1; | |
2768 | } | |
b03a7771 | 2769 | if (ioc->Request.Type.Direction == XFER_READ && ioc->buf_size > 0) { |
edd16368 SC |
2770 | /* Copy the data out of the buffer we created */ |
2771 | BYTE __user *ptr = ioc->buf; | |
2772 | for (i = 0; i < sg_used; i++) { | |
2773 | if (copy_to_user(ptr, buff[i], buff_size[i])) { | |
2774 | cmd_special_free(h, c); | |
2775 | status = -EFAULT; | |
2776 | goto cleanup1; | |
2777 | } | |
2778 | ptr += buff_size[i]; | |
2779 | } | |
2780 | } | |
2781 | cmd_special_free(h, c); | |
2782 | status = 0; | |
2783 | cleanup1: | |
2784 | if (buff) { | |
2785 | for (i = 0; i < sg_used; i++) | |
2786 | kfree(buff[i]); | |
2787 | kfree(buff); | |
2788 | } | |
2789 | kfree(buff_size); | |
2790 | kfree(ioc); | |
2791 | return status; | |
2792 | } | |
2793 | ||
2794 | static void check_ioctl_unit_attention(struct ctlr_info *h, | |
2795 | struct CommandList *c) | |
2796 | { | |
2797 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && | |
2798 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) | |
2799 | (void) check_for_unit_attention(h, c); | |
2800 | } | |
2801 | /* | |
2802 | * ioctl | |
2803 | */ | |
2804 | static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg) | |
2805 | { | |
2806 | struct ctlr_info *h; | |
2807 | void __user *argp = (void __user *)arg; | |
2808 | ||
2809 | h = sdev_to_hba(dev); | |
2810 | ||
2811 | switch (cmd) { | |
2812 | case CCISS_DEREGDISK: | |
2813 | case CCISS_REGNEWDISK: | |
2814 | case CCISS_REGNEWD: | |
a08a8471 | 2815 | hpsa_scan_start(h->scsi_host); |
edd16368 SC |
2816 | return 0; |
2817 | case CCISS_GETPCIINFO: | |
2818 | return hpsa_getpciinfo_ioctl(h, argp); | |
2819 | case CCISS_GETDRIVVER: | |
2820 | return hpsa_getdrivver_ioctl(h, argp); | |
2821 | case CCISS_PASSTHRU: | |
2822 | return hpsa_passthru_ioctl(h, argp); | |
2823 | case CCISS_BIG_PASSTHRU: | |
2824 | return hpsa_big_passthru_ioctl(h, argp); | |
2825 | default: | |
2826 | return -ENOTTY; | |
2827 | } | |
2828 | } | |
2829 | ||
64670ac8 SC |
2830 | static int __devinit hpsa_send_host_reset(struct ctlr_info *h, |
2831 | unsigned char *scsi3addr, u8 reset_type) | |
2832 | { | |
2833 | struct CommandList *c; | |
2834 | ||
2835 | c = cmd_alloc(h); | |
2836 | if (!c) | |
2837 | return -ENOMEM; | |
2838 | fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, | |
2839 | RAID_CTLR_LUNID, TYPE_MSG); | |
2840 | c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */ | |
2841 | c->waiting = NULL; | |
2842 | enqueue_cmd_and_start_io(h, c); | |
2843 | /* Don't wait for completion, the reset won't complete. Don't free | |
2844 | * the command either. This is the last command we will send before | |
2845 | * re-initializing everything, so it doesn't matter and won't leak. | |
2846 | */ | |
2847 | return 0; | |
2848 | } | |
2849 | ||
01a02ffc SC |
2850 | static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, |
2851 | void *buff, size_t size, u8 page_code, unsigned char *scsi3addr, | |
edd16368 SC |
2852 | int cmd_type) |
2853 | { | |
2854 | int pci_dir = XFER_NONE; | |
2855 | ||
2856 | c->cmd_type = CMD_IOCTL_PEND; | |
2857 | c->Header.ReplyQueue = 0; | |
2858 | if (buff != NULL && size > 0) { | |
2859 | c->Header.SGList = 1; | |
2860 | c->Header.SGTotal = 1; | |
2861 | } else { | |
2862 | c->Header.SGList = 0; | |
2863 | c->Header.SGTotal = 0; | |
2864 | } | |
2865 | c->Header.Tag.lower = c->busaddr; | |
2866 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); | |
2867 | ||
2868 | c->Request.Type.Type = cmd_type; | |
2869 | if (cmd_type == TYPE_CMD) { | |
2870 | switch (cmd) { | |
2871 | case HPSA_INQUIRY: | |
2872 | /* are we trying to read a vital product page */ | |
2873 | if (page_code != 0) { | |
2874 | c->Request.CDB[1] = 0x01; | |
2875 | c->Request.CDB[2] = page_code; | |
2876 | } | |
2877 | c->Request.CDBLen = 6; | |
2878 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2879 | c->Request.Type.Direction = XFER_READ; | |
2880 | c->Request.Timeout = 0; | |
2881 | c->Request.CDB[0] = HPSA_INQUIRY; | |
2882 | c->Request.CDB[4] = size & 0xFF; | |
2883 | break; | |
2884 | case HPSA_REPORT_LOG: | |
2885 | case HPSA_REPORT_PHYS: | |
2886 | /* Talking to controller so It's a physical command | |
2887 | mode = 00 target = 0. Nothing to write. | |
2888 | */ | |
2889 | c->Request.CDBLen = 12; | |
2890 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2891 | c->Request.Type.Direction = XFER_READ; | |
2892 | c->Request.Timeout = 0; | |
2893 | c->Request.CDB[0] = cmd; | |
2894 | c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ | |
2895 | c->Request.CDB[7] = (size >> 16) & 0xFF; | |
2896 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
2897 | c->Request.CDB[9] = size & 0xFF; | |
2898 | break; | |
edd16368 SC |
2899 | case HPSA_CACHE_FLUSH: |
2900 | c->Request.CDBLen = 12; | |
2901 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2902 | c->Request.Type.Direction = XFER_WRITE; | |
2903 | c->Request.Timeout = 0; | |
2904 | c->Request.CDB[0] = BMIC_WRITE; | |
2905 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
bb158eab SC |
2906 | c->Request.CDB[7] = (size >> 8) & 0xFF; |
2907 | c->Request.CDB[8] = size & 0xFF; | |
edd16368 SC |
2908 | break; |
2909 | case TEST_UNIT_READY: | |
2910 | c->Request.CDBLen = 6; | |
2911 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2912 | c->Request.Type.Direction = XFER_NONE; | |
2913 | c->Request.Timeout = 0; | |
2914 | break; | |
2915 | default: | |
2916 | dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd); | |
2917 | BUG(); | |
2918 | return; | |
2919 | } | |
2920 | } else if (cmd_type == TYPE_MSG) { | |
2921 | switch (cmd) { | |
2922 | ||
2923 | case HPSA_DEVICE_RESET_MSG: | |
2924 | c->Request.CDBLen = 16; | |
2925 | c->Request.Type.Type = 1; /* It is a MSG not a CMD */ | |
2926 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2927 | c->Request.Type.Direction = XFER_NONE; | |
2928 | c->Request.Timeout = 0; /* Don't time out */ | |
64670ac8 SC |
2929 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); |
2930 | c->Request.CDB[0] = cmd; | |
edd16368 SC |
2931 | c->Request.CDB[1] = 0x03; /* Reset target above */ |
2932 | /* If bytes 4-7 are zero, it means reset the */ | |
2933 | /* LunID device */ | |
2934 | c->Request.CDB[4] = 0x00; | |
2935 | c->Request.CDB[5] = 0x00; | |
2936 | c->Request.CDB[6] = 0x00; | |
2937 | c->Request.CDB[7] = 0x00; | |
2938 | break; | |
2939 | ||
2940 | default: | |
2941 | dev_warn(&h->pdev->dev, "unknown message type %d\n", | |
2942 | cmd); | |
2943 | BUG(); | |
2944 | } | |
2945 | } else { | |
2946 | dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type); | |
2947 | BUG(); | |
2948 | } | |
2949 | ||
2950 | switch (c->Request.Type.Direction) { | |
2951 | case XFER_READ: | |
2952 | pci_dir = PCI_DMA_FROMDEVICE; | |
2953 | break; | |
2954 | case XFER_WRITE: | |
2955 | pci_dir = PCI_DMA_TODEVICE; | |
2956 | break; | |
2957 | case XFER_NONE: | |
2958 | pci_dir = PCI_DMA_NONE; | |
2959 | break; | |
2960 | default: | |
2961 | pci_dir = PCI_DMA_BIDIRECTIONAL; | |
2962 | } | |
2963 | ||
2964 | hpsa_map_one(h->pdev, c, buff, size, pci_dir); | |
2965 | ||
2966 | return; | |
2967 | } | |
2968 | ||
2969 | /* | |
2970 | * Map (physical) PCI mem into (virtual) kernel space | |
2971 | */ | |
2972 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2973 | { | |
2974 | ulong page_base = ((ulong) base) & PAGE_MASK; | |
2975 | ulong page_offs = ((ulong) base) - page_base; | |
2976 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
2977 | ||
2978 | return page_remapped ? (page_remapped + page_offs) : NULL; | |
2979 | } | |
2980 | ||
2981 | /* Takes cmds off the submission queue and sends them to the hardware, | |
2982 | * then puts them on the queue of cmds waiting for completion. | |
2983 | */ | |
2984 | static void start_io(struct ctlr_info *h) | |
2985 | { | |
2986 | struct CommandList *c; | |
2987 | ||
9e0fc764 SC |
2988 | while (!list_empty(&h->reqQ)) { |
2989 | c = list_entry(h->reqQ.next, struct CommandList, list); | |
edd16368 SC |
2990 | /* can't do anything if fifo is full */ |
2991 | if ((h->access.fifo_full(h))) { | |
2992 | dev_warn(&h->pdev->dev, "fifo full\n"); | |
2993 | break; | |
2994 | } | |
2995 | ||
2996 | /* Get the first entry from the Request Q */ | |
2997 | removeQ(c); | |
2998 | h->Qdepth--; | |
2999 | ||
3000 | /* Tell the controller execute command */ | |
3001 | h->access.submit_command(h, c); | |
3002 | ||
3003 | /* Put job onto the completed Q */ | |
3004 | addQ(&h->cmpQ, c); | |
3005 | } | |
3006 | } | |
3007 | ||
3008 | static inline unsigned long get_next_completion(struct ctlr_info *h) | |
3009 | { | |
3010 | return h->access.command_completed(h); | |
3011 | } | |
3012 | ||
900c5440 | 3013 | static inline bool interrupt_pending(struct ctlr_info *h) |
edd16368 SC |
3014 | { |
3015 | return h->access.intr_pending(h); | |
3016 | } | |
3017 | ||
3018 | static inline long interrupt_not_for_us(struct ctlr_info *h) | |
3019 | { | |
10f66018 SC |
3020 | return (h->access.intr_pending(h) == 0) || |
3021 | (h->interrupts_enabled == 0); | |
edd16368 SC |
3022 | } |
3023 | ||
01a02ffc SC |
3024 | static inline int bad_tag(struct ctlr_info *h, u32 tag_index, |
3025 | u32 raw_tag) | |
edd16368 SC |
3026 | { |
3027 | if (unlikely(tag_index >= h->nr_cmds)) { | |
3028 | dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); | |
3029 | return 1; | |
3030 | } | |
3031 | return 0; | |
3032 | } | |
3033 | ||
01a02ffc | 3034 | static inline void finish_cmd(struct CommandList *c, u32 raw_tag) |
edd16368 SC |
3035 | { |
3036 | removeQ(c); | |
3037 | if (likely(c->cmd_type == CMD_SCSI)) | |
1fb011fb | 3038 | complete_scsi_command(c); |
edd16368 SC |
3039 | else if (c->cmd_type == CMD_IOCTL_PEND) |
3040 | complete(c->waiting); | |
3041 | } | |
3042 | ||
a104c99f SC |
3043 | static inline u32 hpsa_tag_contains_index(u32 tag) |
3044 | { | |
a104c99f SC |
3045 | return tag & DIRECT_LOOKUP_BIT; |
3046 | } | |
3047 | ||
3048 | static inline u32 hpsa_tag_to_index(u32 tag) | |
3049 | { | |
a104c99f SC |
3050 | return tag >> DIRECT_LOOKUP_SHIFT; |
3051 | } | |
3052 | ||
a9a3a273 SC |
3053 | |
3054 | static inline u32 hpsa_tag_discard_error_bits(struct ctlr_info *h, u32 tag) | |
a104c99f | 3055 | { |
a9a3a273 SC |
3056 | #define HPSA_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1) |
3057 | #define HPSA_SIMPLE_ERROR_BITS 0x03 | |
960a30e7 | 3058 | if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant))) |
a9a3a273 SC |
3059 | return tag & ~HPSA_SIMPLE_ERROR_BITS; |
3060 | return tag & ~HPSA_PERF_ERROR_BITS; | |
a104c99f SC |
3061 | } |
3062 | ||
303932fd DB |
3063 | /* process completion of an indexed ("direct lookup") command */ |
3064 | static inline u32 process_indexed_cmd(struct ctlr_info *h, | |
3065 | u32 raw_tag) | |
3066 | { | |
3067 | u32 tag_index; | |
3068 | struct CommandList *c; | |
3069 | ||
3070 | tag_index = hpsa_tag_to_index(raw_tag); | |
3071 | if (bad_tag(h, tag_index, raw_tag)) | |
3072 | return next_command(h); | |
3073 | c = h->cmd_pool + tag_index; | |
3074 | finish_cmd(c, raw_tag); | |
3075 | return next_command(h); | |
3076 | } | |
3077 | ||
3078 | /* process completion of a non-indexed command */ | |
3079 | static inline u32 process_nonindexed_cmd(struct ctlr_info *h, | |
3080 | u32 raw_tag) | |
3081 | { | |
3082 | u32 tag; | |
3083 | struct CommandList *c = NULL; | |
303932fd | 3084 | |
a9a3a273 | 3085 | tag = hpsa_tag_discard_error_bits(h, raw_tag); |
9e0fc764 | 3086 | list_for_each_entry(c, &h->cmpQ, list) { |
303932fd DB |
3087 | if ((c->busaddr & 0xFFFFFFE0) == (tag & 0xFFFFFFE0)) { |
3088 | finish_cmd(c, raw_tag); | |
3089 | return next_command(h); | |
3090 | } | |
3091 | } | |
3092 | bad_tag(h, h->nr_cmds + 1, raw_tag); | |
3093 | return next_command(h); | |
3094 | } | |
3095 | ||
64670ac8 SC |
3096 | /* Some controllers, like p400, will give us one interrupt |
3097 | * after a soft reset, even if we turned interrupts off. | |
3098 | * Only need to check for this in the hpsa_xxx_discard_completions | |
3099 | * functions. | |
3100 | */ | |
3101 | static int ignore_bogus_interrupt(struct ctlr_info *h) | |
3102 | { | |
3103 | if (likely(!reset_devices)) | |
3104 | return 0; | |
3105 | ||
3106 | if (likely(h->interrupts_enabled)) | |
3107 | return 0; | |
3108 | ||
3109 | dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled " | |
3110 | "(known firmware bug.) Ignoring.\n"); | |
3111 | ||
3112 | return 1; | |
3113 | } | |
3114 | ||
3115 | static irqreturn_t hpsa_intx_discard_completions(int irq, void *dev_id) | |
3116 | { | |
3117 | struct ctlr_info *h = dev_id; | |
3118 | unsigned long flags; | |
3119 | u32 raw_tag; | |
3120 | ||
3121 | if (ignore_bogus_interrupt(h)) | |
3122 | return IRQ_NONE; | |
3123 | ||
3124 | if (interrupt_not_for_us(h)) | |
3125 | return IRQ_NONE; | |
3126 | spin_lock_irqsave(&h->lock, flags); | |
a0c12413 | 3127 | h->last_intr_timestamp = get_jiffies_64(); |
64670ac8 SC |
3128 | while (interrupt_pending(h)) { |
3129 | raw_tag = get_next_completion(h); | |
3130 | while (raw_tag != FIFO_EMPTY) | |
3131 | raw_tag = next_command(h); | |
3132 | } | |
3133 | spin_unlock_irqrestore(&h->lock, flags); | |
3134 | return IRQ_HANDLED; | |
3135 | } | |
3136 | ||
3137 | static irqreturn_t hpsa_msix_discard_completions(int irq, void *dev_id) | |
3138 | { | |
3139 | struct ctlr_info *h = dev_id; | |
3140 | unsigned long flags; | |
3141 | u32 raw_tag; | |
3142 | ||
3143 | if (ignore_bogus_interrupt(h)) | |
3144 | return IRQ_NONE; | |
3145 | ||
3146 | spin_lock_irqsave(&h->lock, flags); | |
a0c12413 | 3147 | h->last_intr_timestamp = get_jiffies_64(); |
64670ac8 SC |
3148 | raw_tag = get_next_completion(h); |
3149 | while (raw_tag != FIFO_EMPTY) | |
3150 | raw_tag = next_command(h); | |
3151 | spin_unlock_irqrestore(&h->lock, flags); | |
3152 | return IRQ_HANDLED; | |
3153 | } | |
3154 | ||
10f66018 | 3155 | static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id) |
edd16368 SC |
3156 | { |
3157 | struct ctlr_info *h = dev_id; | |
edd16368 | 3158 | unsigned long flags; |
303932fd | 3159 | u32 raw_tag; |
edd16368 SC |
3160 | |
3161 | if (interrupt_not_for_us(h)) | |
3162 | return IRQ_NONE; | |
10f66018 | 3163 | spin_lock_irqsave(&h->lock, flags); |
a0c12413 | 3164 | h->last_intr_timestamp = get_jiffies_64(); |
10f66018 SC |
3165 | while (interrupt_pending(h)) { |
3166 | raw_tag = get_next_completion(h); | |
3167 | while (raw_tag != FIFO_EMPTY) { | |
3168 | if (hpsa_tag_contains_index(raw_tag)) | |
3169 | raw_tag = process_indexed_cmd(h, raw_tag); | |
3170 | else | |
3171 | raw_tag = process_nonindexed_cmd(h, raw_tag); | |
3172 | } | |
3173 | } | |
3174 | spin_unlock_irqrestore(&h->lock, flags); | |
3175 | return IRQ_HANDLED; | |
3176 | } | |
3177 | ||
3178 | static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id) | |
3179 | { | |
3180 | struct ctlr_info *h = dev_id; | |
3181 | unsigned long flags; | |
3182 | u32 raw_tag; | |
3183 | ||
edd16368 | 3184 | spin_lock_irqsave(&h->lock, flags); |
a0c12413 | 3185 | h->last_intr_timestamp = get_jiffies_64(); |
303932fd DB |
3186 | raw_tag = get_next_completion(h); |
3187 | while (raw_tag != FIFO_EMPTY) { | |
3188 | if (hpsa_tag_contains_index(raw_tag)) | |
3189 | raw_tag = process_indexed_cmd(h, raw_tag); | |
3190 | else | |
3191 | raw_tag = process_nonindexed_cmd(h, raw_tag); | |
edd16368 SC |
3192 | } |
3193 | spin_unlock_irqrestore(&h->lock, flags); | |
3194 | return IRQ_HANDLED; | |
3195 | } | |
3196 | ||
a9a3a273 SC |
3197 | /* Send a message CDB to the firmware. Careful, this only works |
3198 | * in simple mode, not performant mode due to the tag lookup. | |
3199 | * We only ever use this immediately after a controller reset. | |
3200 | */ | |
edd16368 SC |
3201 | static __devinit int hpsa_message(struct pci_dev *pdev, unsigned char opcode, |
3202 | unsigned char type) | |
3203 | { | |
3204 | struct Command { | |
3205 | struct CommandListHeader CommandHeader; | |
3206 | struct RequestBlock Request; | |
3207 | struct ErrDescriptor ErrorDescriptor; | |
3208 | }; | |
3209 | struct Command *cmd; | |
3210 | static const size_t cmd_sz = sizeof(*cmd) + | |
3211 | sizeof(cmd->ErrorDescriptor); | |
3212 | dma_addr_t paddr64; | |
3213 | uint32_t paddr32, tag; | |
3214 | void __iomem *vaddr; | |
3215 | int i, err; | |
3216 | ||
3217 | vaddr = pci_ioremap_bar(pdev, 0); | |
3218 | if (vaddr == NULL) | |
3219 | return -ENOMEM; | |
3220 | ||
3221 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the | |
3222 | * CCISS commands, so they must be allocated from the lower 4GiB of | |
3223 | * memory. | |
3224 | */ | |
3225 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); | |
3226 | if (err) { | |
3227 | iounmap(vaddr); | |
3228 | return -ENOMEM; | |
3229 | } | |
3230 | ||
3231 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); | |
3232 | if (cmd == NULL) { | |
3233 | iounmap(vaddr); | |
3234 | return -ENOMEM; | |
3235 | } | |
3236 | ||
3237 | /* This must fit, because of the 32-bit consistent DMA mask. Also, | |
3238 | * although there's no guarantee, we assume that the address is at | |
3239 | * least 4-byte aligned (most likely, it's page-aligned). | |
3240 | */ | |
3241 | paddr32 = paddr64; | |
3242 | ||
3243 | cmd->CommandHeader.ReplyQueue = 0; | |
3244 | cmd->CommandHeader.SGList = 0; | |
3245 | cmd->CommandHeader.SGTotal = 0; | |
3246 | cmd->CommandHeader.Tag.lower = paddr32; | |
3247 | cmd->CommandHeader.Tag.upper = 0; | |
3248 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); | |
3249 | ||
3250 | cmd->Request.CDBLen = 16; | |
3251 | cmd->Request.Type.Type = TYPE_MSG; | |
3252 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; | |
3253 | cmd->Request.Type.Direction = XFER_NONE; | |
3254 | cmd->Request.Timeout = 0; /* Don't time out */ | |
3255 | cmd->Request.CDB[0] = opcode; | |
3256 | cmd->Request.CDB[1] = type; | |
3257 | memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */ | |
3258 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(*cmd); | |
3259 | cmd->ErrorDescriptor.Addr.upper = 0; | |
3260 | cmd->ErrorDescriptor.Len = sizeof(struct ErrorInfo); | |
3261 | ||
3262 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); | |
3263 | ||
3264 | for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) { | |
3265 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); | |
a9a3a273 | 3266 | if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr32) |
edd16368 SC |
3267 | break; |
3268 | msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS); | |
3269 | } | |
3270 | ||
3271 | iounmap(vaddr); | |
3272 | ||
3273 | /* we leak the DMA buffer here ... no choice since the controller could | |
3274 | * still complete the command. | |
3275 | */ | |
3276 | if (i == HPSA_MSG_SEND_RETRY_LIMIT) { | |
3277 | dev_err(&pdev->dev, "controller message %02x:%02x timed out\n", | |
3278 | opcode, type); | |
3279 | return -ETIMEDOUT; | |
3280 | } | |
3281 | ||
3282 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); | |
3283 | ||
3284 | if (tag & HPSA_ERROR_BIT) { | |
3285 | dev_err(&pdev->dev, "controller message %02x:%02x failed\n", | |
3286 | opcode, type); | |
3287 | return -EIO; | |
3288 | } | |
3289 | ||
3290 | dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n", | |
3291 | opcode, type); | |
3292 | return 0; | |
3293 | } | |
3294 | ||
edd16368 SC |
3295 | #define hpsa_noop(p) hpsa_message(p, 3, 0) |
3296 | ||
1df8552a | 3297 | static int hpsa_controller_hard_reset(struct pci_dev *pdev, |
cf0b08d0 | 3298 | void * __iomem vaddr, u32 use_doorbell) |
1df8552a SC |
3299 | { |
3300 | u16 pmcsr; | |
3301 | int pos; | |
3302 | ||
3303 | if (use_doorbell) { | |
3304 | /* For everything after the P600, the PCI power state method | |
3305 | * of resetting the controller doesn't work, so we have this | |
3306 | * other way using the doorbell register. | |
3307 | */ | |
3308 | dev_info(&pdev->dev, "using doorbell to reset controller\n"); | |
cf0b08d0 | 3309 | writel(use_doorbell, vaddr + SA5_DOORBELL); |
1df8552a SC |
3310 | } else { /* Try to do it the PCI power state way */ |
3311 | ||
3312 | /* Quoting from the Open CISS Specification: "The Power | |
3313 | * Management Control/Status Register (CSR) controls the power | |
3314 | * state of the device. The normal operating state is D0, | |
3315 | * CSR=00h. The software off state is D3, CSR=03h. To reset | |
3316 | * the controller, place the interface device in D3 then to D0, | |
3317 | * this causes a secondary PCI reset which will reset the | |
3318 | * controller." */ | |
3319 | ||
3320 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); | |
3321 | if (pos == 0) { | |
3322 | dev_err(&pdev->dev, | |
3323 | "hpsa_reset_controller: " | |
3324 | "PCI PM not supported\n"); | |
3325 | return -ENODEV; | |
3326 | } | |
3327 | dev_info(&pdev->dev, "using PCI PM to reset controller\n"); | |
3328 | /* enter the D3hot power management state */ | |
3329 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); | |
3330 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
3331 | pmcsr |= PCI_D3hot; | |
3332 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
3333 | ||
3334 | msleep(500); | |
3335 | ||
3336 | /* enter the D0 power management state */ | |
3337 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
3338 | pmcsr |= PCI_D0; | |
3339 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
c4853efe MM |
3340 | |
3341 | /* | |
3342 | * The P600 requires a small delay when changing states. | |
3343 | * Otherwise we may think the board did not reset and we bail. | |
3344 | * This for kdump only and is particular to the P600. | |
3345 | */ | |
3346 | msleep(500); | |
1df8552a SC |
3347 | } |
3348 | return 0; | |
3349 | } | |
3350 | ||
580ada3c SC |
3351 | static __devinit void init_driver_version(char *driver_version, int len) |
3352 | { | |
3353 | memset(driver_version, 0, len); | |
3354 | strncpy(driver_version, "hpsa " HPSA_DRIVER_VERSION, len - 1); | |
3355 | } | |
3356 | ||
3357 | static __devinit int write_driver_ver_to_cfgtable( | |
3358 | struct CfgTable __iomem *cfgtable) | |
3359 | { | |
3360 | char *driver_version; | |
3361 | int i, size = sizeof(cfgtable->driver_version); | |
3362 | ||
3363 | driver_version = kmalloc(size, GFP_KERNEL); | |
3364 | if (!driver_version) | |
3365 | return -ENOMEM; | |
3366 | ||
3367 | init_driver_version(driver_version, size); | |
3368 | for (i = 0; i < size; i++) | |
3369 | writeb(driver_version[i], &cfgtable->driver_version[i]); | |
3370 | kfree(driver_version); | |
3371 | return 0; | |
3372 | } | |
3373 | ||
3374 | static __devinit void read_driver_ver_from_cfgtable( | |
3375 | struct CfgTable __iomem *cfgtable, unsigned char *driver_ver) | |
3376 | { | |
3377 | int i; | |
3378 | ||
3379 | for (i = 0; i < sizeof(cfgtable->driver_version); i++) | |
3380 | driver_ver[i] = readb(&cfgtable->driver_version[i]); | |
3381 | } | |
3382 | ||
3383 | static __devinit int controller_reset_failed( | |
3384 | struct CfgTable __iomem *cfgtable) | |
3385 | { | |
3386 | ||
3387 | char *driver_ver, *old_driver_ver; | |
3388 | int rc, size = sizeof(cfgtable->driver_version); | |
3389 | ||
3390 | old_driver_ver = kmalloc(2 * size, GFP_KERNEL); | |
3391 | if (!old_driver_ver) | |
3392 | return -ENOMEM; | |
3393 | driver_ver = old_driver_ver + size; | |
3394 | ||
3395 | /* After a reset, the 32 bytes of "driver version" in the cfgtable | |
3396 | * should have been changed, otherwise we know the reset failed. | |
3397 | */ | |
3398 | init_driver_version(old_driver_ver, size); | |
3399 | read_driver_ver_from_cfgtable(cfgtable, driver_ver); | |
3400 | rc = !memcmp(driver_ver, old_driver_ver, size); | |
3401 | kfree(old_driver_ver); | |
3402 | return rc; | |
3403 | } | |
edd16368 | 3404 | /* This does a hard reset of the controller using PCI power management |
1df8552a | 3405 | * states or the using the doorbell register. |
edd16368 | 3406 | */ |
1df8552a | 3407 | static __devinit int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev) |
edd16368 | 3408 | { |
1df8552a SC |
3409 | u64 cfg_offset; |
3410 | u32 cfg_base_addr; | |
3411 | u64 cfg_base_addr_index; | |
3412 | void __iomem *vaddr; | |
3413 | unsigned long paddr; | |
580ada3c | 3414 | u32 misc_fw_support; |
270d05de | 3415 | int rc; |
1df8552a | 3416 | struct CfgTable __iomem *cfgtable; |
cf0b08d0 | 3417 | u32 use_doorbell; |
18867659 | 3418 | u32 board_id; |
270d05de | 3419 | u16 command_register; |
edd16368 | 3420 | |
1df8552a SC |
3421 | /* For controllers as old as the P600, this is very nearly |
3422 | * the same thing as | |
edd16368 SC |
3423 | * |
3424 | * pci_save_state(pci_dev); | |
3425 | * pci_set_power_state(pci_dev, PCI_D3hot); | |
3426 | * pci_set_power_state(pci_dev, PCI_D0); | |
3427 | * pci_restore_state(pci_dev); | |
3428 | * | |
1df8552a SC |
3429 | * For controllers newer than the P600, the pci power state |
3430 | * method of resetting doesn't work so we have another way | |
3431 | * using the doorbell register. | |
edd16368 | 3432 | */ |
18867659 | 3433 | |
25c1e56a | 3434 | rc = hpsa_lookup_board_id(pdev, &board_id); |
46380786 | 3435 | if (rc < 0 || !ctlr_is_resettable(board_id)) { |
25c1e56a SC |
3436 | dev_warn(&pdev->dev, "Not resetting device.\n"); |
3437 | return -ENODEV; | |
3438 | } | |
46380786 SC |
3439 | |
3440 | /* if controller is soft- but not hard resettable... */ | |
3441 | if (!ctlr_is_hard_resettable(board_id)) | |
3442 | return -ENOTSUPP; /* try soft reset later. */ | |
18867659 | 3443 | |
270d05de SC |
3444 | /* Save the PCI command register */ |
3445 | pci_read_config_word(pdev, 4, &command_register); | |
3446 | /* Turn the board off. This is so that later pci_restore_state() | |
3447 | * won't turn the board on before the rest of config space is ready. | |
3448 | */ | |
3449 | pci_disable_device(pdev); | |
3450 | pci_save_state(pdev); | |
edd16368 | 3451 | |
1df8552a SC |
3452 | /* find the first memory BAR, so we can find the cfg table */ |
3453 | rc = hpsa_pci_find_memory_BAR(pdev, &paddr); | |
3454 | if (rc) | |
3455 | return rc; | |
3456 | vaddr = remap_pci_mem(paddr, 0x250); | |
3457 | if (!vaddr) | |
3458 | return -ENOMEM; | |
edd16368 | 3459 | |
1df8552a SC |
3460 | /* find cfgtable in order to check if reset via doorbell is supported */ |
3461 | rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr, | |
3462 | &cfg_base_addr_index, &cfg_offset); | |
3463 | if (rc) | |
3464 | goto unmap_vaddr; | |
3465 | cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
3466 | cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable)); | |
3467 | if (!cfgtable) { | |
3468 | rc = -ENOMEM; | |
3469 | goto unmap_vaddr; | |
3470 | } | |
580ada3c SC |
3471 | rc = write_driver_ver_to_cfgtable(cfgtable); |
3472 | if (rc) | |
3473 | goto unmap_vaddr; | |
edd16368 | 3474 | |
cf0b08d0 SC |
3475 | /* If reset via doorbell register is supported, use that. |
3476 | * There are two such methods. Favor the newest method. | |
3477 | */ | |
1df8552a | 3478 | misc_fw_support = readl(&cfgtable->misc_fw_support); |
cf0b08d0 SC |
3479 | use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2; |
3480 | if (use_doorbell) { | |
3481 | use_doorbell = DOORBELL_CTLR_RESET2; | |
3482 | } else { | |
3483 | use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET; | |
3484 | if (use_doorbell) { | |
fba63097 MM |
3485 | dev_warn(&pdev->dev, "Soft reset not supported. " |
3486 | "Firmware update is required.\n"); | |
64670ac8 | 3487 | rc = -ENOTSUPP; /* try soft reset */ |
cf0b08d0 SC |
3488 | goto unmap_cfgtable; |
3489 | } | |
3490 | } | |
edd16368 | 3491 | |
1df8552a SC |
3492 | rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell); |
3493 | if (rc) | |
3494 | goto unmap_cfgtable; | |
edd16368 | 3495 | |
270d05de SC |
3496 | pci_restore_state(pdev); |
3497 | rc = pci_enable_device(pdev); | |
3498 | if (rc) { | |
3499 | dev_warn(&pdev->dev, "failed to enable device.\n"); | |
3500 | goto unmap_cfgtable; | |
edd16368 | 3501 | } |
270d05de | 3502 | pci_write_config_word(pdev, 4, command_register); |
edd16368 | 3503 | |
1df8552a SC |
3504 | /* Some devices (notably the HP Smart Array 5i Controller) |
3505 | need a little pause here */ | |
3506 | msleep(HPSA_POST_RESET_PAUSE_MSECS); | |
3507 | ||
fe5389c8 | 3508 | /* Wait for board to become not ready, then ready. */ |
2b870cb3 | 3509 | dev_info(&pdev->dev, "Waiting for board to reset.\n"); |
fe5389c8 | 3510 | rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_NOT_READY); |
64670ac8 | 3511 | if (rc) { |
fe5389c8 | 3512 | dev_warn(&pdev->dev, |
64670ac8 SC |
3513 | "failed waiting for board to reset." |
3514 | " Will try soft reset.\n"); | |
3515 | rc = -ENOTSUPP; /* Not expected, but try soft reset later */ | |
3516 | goto unmap_cfgtable; | |
3517 | } | |
fe5389c8 SC |
3518 | rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY); |
3519 | if (rc) { | |
3520 | dev_warn(&pdev->dev, | |
64670ac8 SC |
3521 | "failed waiting for board to become ready " |
3522 | "after hard reset\n"); | |
fe5389c8 SC |
3523 | goto unmap_cfgtable; |
3524 | } | |
fe5389c8 | 3525 | |
580ada3c SC |
3526 | rc = controller_reset_failed(vaddr); |
3527 | if (rc < 0) | |
3528 | goto unmap_cfgtable; | |
3529 | if (rc) { | |
64670ac8 SC |
3530 | dev_warn(&pdev->dev, "Unable to successfully reset " |
3531 | "controller. Will try soft reset.\n"); | |
3532 | rc = -ENOTSUPP; | |
580ada3c | 3533 | } else { |
64670ac8 | 3534 | dev_info(&pdev->dev, "board ready after hard reset.\n"); |
1df8552a SC |
3535 | } |
3536 | ||
3537 | unmap_cfgtable: | |
3538 | iounmap(cfgtable); | |
3539 | ||
3540 | unmap_vaddr: | |
3541 | iounmap(vaddr); | |
3542 | return rc; | |
edd16368 SC |
3543 | } |
3544 | ||
3545 | /* | |
3546 | * We cannot read the structure directly, for portability we must use | |
3547 | * the io functions. | |
3548 | * This is for debug only. | |
3549 | */ | |
edd16368 SC |
3550 | static void print_cfg_table(struct device *dev, struct CfgTable *tb) |
3551 | { | |
58f8665c | 3552 | #ifdef HPSA_DEBUG |
edd16368 SC |
3553 | int i; |
3554 | char temp_name[17]; | |
3555 | ||
3556 | dev_info(dev, "Controller Configuration information\n"); | |
3557 | dev_info(dev, "------------------------------------\n"); | |
3558 | for (i = 0; i < 4; i++) | |
3559 | temp_name[i] = readb(&(tb->Signature[i])); | |
3560 | temp_name[4] = '\0'; | |
3561 | dev_info(dev, " Signature = %s\n", temp_name); | |
3562 | dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence))); | |
3563 | dev_info(dev, " Transport methods supported = 0x%x\n", | |
3564 | readl(&(tb->TransportSupport))); | |
3565 | dev_info(dev, " Transport methods active = 0x%x\n", | |
3566 | readl(&(tb->TransportActive))); | |
3567 | dev_info(dev, " Requested transport Method = 0x%x\n", | |
3568 | readl(&(tb->HostWrite.TransportRequest))); | |
3569 | dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n", | |
3570 | readl(&(tb->HostWrite.CoalIntDelay))); | |
3571 | dev_info(dev, " Coalesce Interrupt Count = 0x%x\n", | |
3572 | readl(&(tb->HostWrite.CoalIntCount))); | |
3573 | dev_info(dev, " Max outstanding commands = 0x%d\n", | |
3574 | readl(&(tb->CmdsOutMax))); | |
3575 | dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
3576 | for (i = 0; i < 16; i++) | |
3577 | temp_name[i] = readb(&(tb->ServerName[i])); | |
3578 | temp_name[16] = '\0'; | |
3579 | dev_info(dev, " Server Name = %s\n", temp_name); | |
3580 | dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n", | |
3581 | readl(&(tb->HeartBeat))); | |
edd16368 | 3582 | #endif /* HPSA_DEBUG */ |
58f8665c | 3583 | } |
edd16368 SC |
3584 | |
3585 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) | |
3586 | { | |
3587 | int i, offset, mem_type, bar_type; | |
3588 | ||
3589 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ | |
3590 | return 0; | |
3591 | offset = 0; | |
3592 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { | |
3593 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
3594 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) | |
3595 | offset += 4; | |
3596 | else { | |
3597 | mem_type = pci_resource_flags(pdev, i) & | |
3598 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; | |
3599 | switch (mem_type) { | |
3600 | case PCI_BASE_ADDRESS_MEM_TYPE_32: | |
3601 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
3602 | offset += 4; /* 32 bit */ | |
3603 | break; | |
3604 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
3605 | offset += 8; | |
3606 | break; | |
3607 | default: /* reserved in PCI 2.2 */ | |
3608 | dev_warn(&pdev->dev, | |
3609 | "base address is invalid\n"); | |
3610 | return -1; | |
3611 | break; | |
3612 | } | |
3613 | } | |
3614 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) | |
3615 | return i + 1; | |
3616 | } | |
3617 | return -1; | |
3618 | } | |
3619 | ||
3620 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on | |
3621 | * controllers that are capable. If not, we use IO-APIC mode. | |
3622 | */ | |
3623 | ||
6b3f4c52 | 3624 | static void __devinit hpsa_interrupt_mode(struct ctlr_info *h) |
edd16368 SC |
3625 | { |
3626 | #ifdef CONFIG_PCI_MSI | |
3627 | int err; | |
3628 | struct msix_entry hpsa_msix_entries[4] = { {0, 0}, {0, 1}, | |
3629 | {0, 2}, {0, 3} | |
3630 | }; | |
3631 | ||
3632 | /* Some boards advertise MSI but don't really support it */ | |
6b3f4c52 SC |
3633 | if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) || |
3634 | (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11)) | |
edd16368 | 3635 | goto default_int_mode; |
55c06c71 SC |
3636 | if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) { |
3637 | dev_info(&h->pdev->dev, "MSIX\n"); | |
3638 | err = pci_enable_msix(h->pdev, hpsa_msix_entries, 4); | |
edd16368 SC |
3639 | if (!err) { |
3640 | h->intr[0] = hpsa_msix_entries[0].vector; | |
3641 | h->intr[1] = hpsa_msix_entries[1].vector; | |
3642 | h->intr[2] = hpsa_msix_entries[2].vector; | |
3643 | h->intr[3] = hpsa_msix_entries[3].vector; | |
3644 | h->msix_vector = 1; | |
3645 | return; | |
3646 | } | |
3647 | if (err > 0) { | |
55c06c71 | 3648 | dev_warn(&h->pdev->dev, "only %d MSI-X vectors " |
edd16368 SC |
3649 | "available\n", err); |
3650 | goto default_int_mode; | |
3651 | } else { | |
55c06c71 | 3652 | dev_warn(&h->pdev->dev, "MSI-X init failed %d\n", |
edd16368 SC |
3653 | err); |
3654 | goto default_int_mode; | |
3655 | } | |
3656 | } | |
55c06c71 SC |
3657 | if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) { |
3658 | dev_info(&h->pdev->dev, "MSI\n"); | |
3659 | if (!pci_enable_msi(h->pdev)) | |
edd16368 SC |
3660 | h->msi_vector = 1; |
3661 | else | |
55c06c71 | 3662 | dev_warn(&h->pdev->dev, "MSI init failed\n"); |
edd16368 SC |
3663 | } |
3664 | default_int_mode: | |
3665 | #endif /* CONFIG_PCI_MSI */ | |
3666 | /* if we get here we're going to use the default interrupt mode */ | |
a9a3a273 | 3667 | h->intr[h->intr_mode] = h->pdev->irq; |
edd16368 SC |
3668 | } |
3669 | ||
e5c880d1 SC |
3670 | static int __devinit hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id) |
3671 | { | |
3672 | int i; | |
3673 | u32 subsystem_vendor_id, subsystem_device_id; | |
3674 | ||
3675 | subsystem_vendor_id = pdev->subsystem_vendor; | |
3676 | subsystem_device_id = pdev->subsystem_device; | |
3677 | *board_id = ((subsystem_device_id << 16) & 0xffff0000) | | |
3678 | subsystem_vendor_id; | |
3679 | ||
3680 | for (i = 0; i < ARRAY_SIZE(products); i++) | |
3681 | if (*board_id == products[i].board_id) | |
3682 | return i; | |
3683 | ||
6798cc0a SC |
3684 | if ((subsystem_vendor_id != PCI_VENDOR_ID_HP && |
3685 | subsystem_vendor_id != PCI_VENDOR_ID_COMPAQ) || | |
3686 | !hpsa_allow_any) { | |
e5c880d1 SC |
3687 | dev_warn(&pdev->dev, "unrecognized board ID: " |
3688 | "0x%08x, ignoring.\n", *board_id); | |
3689 | return -ENODEV; | |
3690 | } | |
3691 | return ARRAY_SIZE(products) - 1; /* generic unknown smart array */ | |
3692 | } | |
3693 | ||
85bdbabb SC |
3694 | static inline bool hpsa_board_disabled(struct pci_dev *pdev) |
3695 | { | |
3696 | u16 command; | |
3697 | ||
3698 | (void) pci_read_config_word(pdev, PCI_COMMAND, &command); | |
3699 | return ((command & PCI_COMMAND_MEMORY) == 0); | |
3700 | } | |
3701 | ||
12d2cd47 | 3702 | static int __devinit hpsa_pci_find_memory_BAR(struct pci_dev *pdev, |
3a7774ce SC |
3703 | unsigned long *memory_bar) |
3704 | { | |
3705 | int i; | |
3706 | ||
3707 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) | |
12d2cd47 | 3708 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { |
3a7774ce | 3709 | /* addressing mode bits already removed */ |
12d2cd47 SC |
3710 | *memory_bar = pci_resource_start(pdev, i); |
3711 | dev_dbg(&pdev->dev, "memory BAR = %lx\n", | |
3a7774ce SC |
3712 | *memory_bar); |
3713 | return 0; | |
3714 | } | |
12d2cd47 | 3715 | dev_warn(&pdev->dev, "no memory BAR found\n"); |
3a7774ce SC |
3716 | return -ENODEV; |
3717 | } | |
3718 | ||
fe5389c8 SC |
3719 | static int __devinit hpsa_wait_for_board_state(struct pci_dev *pdev, |
3720 | void __iomem *vaddr, int wait_for_ready) | |
2c4c8c8b | 3721 | { |
fe5389c8 | 3722 | int i, iterations; |
2c4c8c8b | 3723 | u32 scratchpad; |
fe5389c8 SC |
3724 | if (wait_for_ready) |
3725 | iterations = HPSA_BOARD_READY_ITERATIONS; | |
3726 | else | |
3727 | iterations = HPSA_BOARD_NOT_READY_ITERATIONS; | |
2c4c8c8b | 3728 | |
fe5389c8 SC |
3729 | for (i = 0; i < iterations; i++) { |
3730 | scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET); | |
3731 | if (wait_for_ready) { | |
3732 | if (scratchpad == HPSA_FIRMWARE_READY) | |
3733 | return 0; | |
3734 | } else { | |
3735 | if (scratchpad != HPSA_FIRMWARE_READY) | |
3736 | return 0; | |
3737 | } | |
2c4c8c8b SC |
3738 | msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS); |
3739 | } | |
fe5389c8 | 3740 | dev_warn(&pdev->dev, "board not ready, timed out.\n"); |
2c4c8c8b SC |
3741 | return -ENODEV; |
3742 | } | |
3743 | ||
a51fd47f SC |
3744 | static int __devinit hpsa_find_cfg_addrs(struct pci_dev *pdev, |
3745 | void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, | |
3746 | u64 *cfg_offset) | |
3747 | { | |
3748 | *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET); | |
3749 | *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET); | |
3750 | *cfg_base_addr &= (u32) 0x0000ffff; | |
3751 | *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr); | |
3752 | if (*cfg_base_addr_index == -1) { | |
3753 | dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n"); | |
3754 | return -ENODEV; | |
3755 | } | |
3756 | return 0; | |
3757 | } | |
3758 | ||
77c4495c | 3759 | static int __devinit hpsa_find_cfgtables(struct ctlr_info *h) |
edd16368 | 3760 | { |
01a02ffc SC |
3761 | u64 cfg_offset; |
3762 | u32 cfg_base_addr; | |
3763 | u64 cfg_base_addr_index; | |
303932fd | 3764 | u32 trans_offset; |
a51fd47f | 3765 | int rc; |
77c4495c | 3766 | |
a51fd47f SC |
3767 | rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr, |
3768 | &cfg_base_addr_index, &cfg_offset); | |
3769 | if (rc) | |
3770 | return rc; | |
77c4495c | 3771 | h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev, |
a51fd47f | 3772 | cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable)); |
77c4495c SC |
3773 | if (!h->cfgtable) |
3774 | return -ENOMEM; | |
580ada3c SC |
3775 | rc = write_driver_ver_to_cfgtable(h->cfgtable); |
3776 | if (rc) | |
3777 | return rc; | |
77c4495c | 3778 | /* Find performant mode table. */ |
a51fd47f | 3779 | trans_offset = readl(&h->cfgtable->TransMethodOffset); |
77c4495c SC |
3780 | h->transtable = remap_pci_mem(pci_resource_start(h->pdev, |
3781 | cfg_base_addr_index)+cfg_offset+trans_offset, | |
3782 | sizeof(*h->transtable)); | |
3783 | if (!h->transtable) | |
3784 | return -ENOMEM; | |
3785 | return 0; | |
3786 | } | |
3787 | ||
cba3d38b SC |
3788 | static void __devinit hpsa_get_max_perf_mode_cmds(struct ctlr_info *h) |
3789 | { | |
3790 | h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); | |
72ceeaec SC |
3791 | |
3792 | /* Limit commands in memory limited kdump scenario. */ | |
3793 | if (reset_devices && h->max_commands > 32) | |
3794 | h->max_commands = 32; | |
3795 | ||
cba3d38b SC |
3796 | if (h->max_commands < 16) { |
3797 | dev_warn(&h->pdev->dev, "Controller reports " | |
3798 | "max supported commands of %d, an obvious lie. " | |
3799 | "Using 16. Ensure that firmware is up to date.\n", | |
3800 | h->max_commands); | |
3801 | h->max_commands = 16; | |
3802 | } | |
3803 | } | |
3804 | ||
b93d7536 SC |
3805 | /* Interrogate the hardware for some limits: |
3806 | * max commands, max SG elements without chaining, and with chaining, | |
3807 | * SG chain block size, etc. | |
3808 | */ | |
3809 | static void __devinit hpsa_find_board_params(struct ctlr_info *h) | |
3810 | { | |
cba3d38b | 3811 | hpsa_get_max_perf_mode_cmds(h); |
b93d7536 SC |
3812 | h->nr_cmds = h->max_commands - 4; /* Allow room for some ioctls */ |
3813 | h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements)); | |
3814 | /* | |
3815 | * Limit in-command s/g elements to 32 save dma'able memory. | |
3816 | * Howvever spec says if 0, use 31 | |
3817 | */ | |
3818 | h->max_cmd_sg_entries = 31; | |
3819 | if (h->maxsgentries > 512) { | |
3820 | h->max_cmd_sg_entries = 32; | |
3821 | h->chainsize = h->maxsgentries - h->max_cmd_sg_entries + 1; | |
3822 | h->maxsgentries--; /* save one for chain pointer */ | |
3823 | } else { | |
3824 | h->maxsgentries = 31; /* default to traditional values */ | |
3825 | h->chainsize = 0; | |
3826 | } | |
3827 | } | |
3828 | ||
76c46e49 SC |
3829 | static inline bool hpsa_CISS_signature_present(struct ctlr_info *h) |
3830 | { | |
3831 | if ((readb(&h->cfgtable->Signature[0]) != 'C') || | |
3832 | (readb(&h->cfgtable->Signature[1]) != 'I') || | |
3833 | (readb(&h->cfgtable->Signature[2]) != 'S') || | |
3834 | (readb(&h->cfgtable->Signature[3]) != 'S')) { | |
3835 | dev_warn(&h->pdev->dev, "not a valid CISS config table\n"); | |
3836 | return false; | |
3837 | } | |
3838 | return true; | |
3839 | } | |
3840 | ||
f7c39101 SC |
3841 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ |
3842 | static inline void hpsa_enable_scsi_prefetch(struct ctlr_info *h) | |
3843 | { | |
3844 | #ifdef CONFIG_X86 | |
3845 | u32 prefetch; | |
3846 | ||
3847 | prefetch = readl(&(h->cfgtable->SCSI_Prefetch)); | |
3848 | prefetch |= 0x100; | |
3849 | writel(prefetch, &(h->cfgtable->SCSI_Prefetch)); | |
3850 | #endif | |
3851 | } | |
3852 | ||
3d0eab67 SC |
3853 | /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result |
3854 | * in a prefetch beyond physical memory. | |
3855 | */ | |
3856 | static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h) | |
3857 | { | |
3858 | u32 dma_prefetch; | |
3859 | ||
3860 | if (h->board_id != 0x3225103C) | |
3861 | return; | |
3862 | dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG); | |
3863 | dma_prefetch |= 0x8000; | |
3864 | writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG); | |
3865 | } | |
3866 | ||
3f4336f3 | 3867 | static void __devinit hpsa_wait_for_mode_change_ack(struct ctlr_info *h) |
eb6b2ae9 SC |
3868 | { |
3869 | int i; | |
6eaf46fd SC |
3870 | u32 doorbell_value; |
3871 | unsigned long flags; | |
eb6b2ae9 SC |
3872 | |
3873 | /* under certain very rare conditions, this can take awhile. | |
3874 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
3875 | * as we enter this code.) | |
3876 | */ | |
3877 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { | |
6eaf46fd SC |
3878 | spin_lock_irqsave(&h->lock, flags); |
3879 | doorbell_value = readl(h->vaddr + SA5_DOORBELL); | |
3880 | spin_unlock_irqrestore(&h->lock, flags); | |
382be668 | 3881 | if (!(doorbell_value & CFGTBL_ChangeReq)) |
eb6b2ae9 SC |
3882 | break; |
3883 | /* delay and try again */ | |
60d3f5b0 | 3884 | usleep_range(10000, 20000); |
eb6b2ae9 | 3885 | } |
3f4336f3 SC |
3886 | } |
3887 | ||
3888 | static int __devinit hpsa_enter_simple_mode(struct ctlr_info *h) | |
3889 | { | |
3890 | u32 trans_support; | |
3891 | ||
3892 | trans_support = readl(&(h->cfgtable->TransportSupport)); | |
3893 | if (!(trans_support & SIMPLE_MODE)) | |
3894 | return -ENOTSUPP; | |
3895 | ||
3896 | h->max_commands = readl(&(h->cfgtable->CmdsOutMax)); | |
3897 | /* Update the field, and then ring the doorbell */ | |
3898 | writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest)); | |
3899 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); | |
3900 | hpsa_wait_for_mode_change_ack(h); | |
eb6b2ae9 | 3901 | print_cfg_table(&h->pdev->dev, h->cfgtable); |
eb6b2ae9 SC |
3902 | if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
3903 | dev_warn(&h->pdev->dev, | |
3904 | "unable to get board into simple mode\n"); | |
3905 | return -ENODEV; | |
3906 | } | |
960a30e7 | 3907 | h->transMethod = CFGTBL_Trans_Simple; |
eb6b2ae9 SC |
3908 | return 0; |
3909 | } | |
3910 | ||
77c4495c SC |
3911 | static int __devinit hpsa_pci_init(struct ctlr_info *h) |
3912 | { | |
eb6b2ae9 | 3913 | int prod_index, err; |
edd16368 | 3914 | |
e5c880d1 SC |
3915 | prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id); |
3916 | if (prod_index < 0) | |
3917 | return -ENODEV; | |
3918 | h->product_name = products[prod_index].product_name; | |
3919 | h->access = *(products[prod_index].access); | |
edd16368 | 3920 | |
85bdbabb | 3921 | if (hpsa_board_disabled(h->pdev)) { |
55c06c71 | 3922 | dev_warn(&h->pdev->dev, "controller appears to be disabled\n"); |
edd16368 SC |
3923 | return -ENODEV; |
3924 | } | |
55c06c71 | 3925 | err = pci_enable_device(h->pdev); |
edd16368 | 3926 | if (err) { |
55c06c71 | 3927 | dev_warn(&h->pdev->dev, "unable to enable PCI device\n"); |
edd16368 SC |
3928 | return err; |
3929 | } | |
3930 | ||
55c06c71 | 3931 | err = pci_request_regions(h->pdev, "hpsa"); |
edd16368 | 3932 | if (err) { |
55c06c71 SC |
3933 | dev_err(&h->pdev->dev, |
3934 | "cannot obtain PCI resources, aborting\n"); | |
edd16368 SC |
3935 | return err; |
3936 | } | |
6b3f4c52 | 3937 | hpsa_interrupt_mode(h); |
12d2cd47 | 3938 | err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr); |
3a7774ce | 3939 | if (err) |
edd16368 | 3940 | goto err_out_free_res; |
edd16368 | 3941 | h->vaddr = remap_pci_mem(h->paddr, 0x250); |
204892e9 SC |
3942 | if (!h->vaddr) { |
3943 | err = -ENOMEM; | |
3944 | goto err_out_free_res; | |
3945 | } | |
fe5389c8 | 3946 | err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY); |
2c4c8c8b | 3947 | if (err) |
edd16368 | 3948 | goto err_out_free_res; |
77c4495c SC |
3949 | err = hpsa_find_cfgtables(h); |
3950 | if (err) | |
edd16368 | 3951 | goto err_out_free_res; |
b93d7536 | 3952 | hpsa_find_board_params(h); |
edd16368 | 3953 | |
76c46e49 | 3954 | if (!hpsa_CISS_signature_present(h)) { |
edd16368 SC |
3955 | err = -ENODEV; |
3956 | goto err_out_free_res; | |
3957 | } | |
f7c39101 | 3958 | hpsa_enable_scsi_prefetch(h); |
3d0eab67 | 3959 | hpsa_p600_dma_prefetch_quirk(h); |
eb6b2ae9 SC |
3960 | err = hpsa_enter_simple_mode(h); |
3961 | if (err) | |
edd16368 | 3962 | goto err_out_free_res; |
edd16368 SC |
3963 | return 0; |
3964 | ||
3965 | err_out_free_res: | |
204892e9 SC |
3966 | if (h->transtable) |
3967 | iounmap(h->transtable); | |
3968 | if (h->cfgtable) | |
3969 | iounmap(h->cfgtable); | |
3970 | if (h->vaddr) | |
3971 | iounmap(h->vaddr); | |
edd16368 SC |
3972 | /* |
3973 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3974 | * Smart Array controllers that pci_enable_device does not undo | |
3975 | */ | |
55c06c71 | 3976 | pci_release_regions(h->pdev); |
edd16368 SC |
3977 | return err; |
3978 | } | |
3979 | ||
339b2b14 SC |
3980 | static void __devinit hpsa_hba_inquiry(struct ctlr_info *h) |
3981 | { | |
3982 | int rc; | |
3983 | ||
3984 | #define HBA_INQUIRY_BYTE_COUNT 64 | |
3985 | h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL); | |
3986 | if (!h->hba_inquiry_data) | |
3987 | return; | |
3988 | rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0, | |
3989 | h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT); | |
3990 | if (rc != 0) { | |
3991 | kfree(h->hba_inquiry_data); | |
3992 | h->hba_inquiry_data = NULL; | |
3993 | } | |
3994 | } | |
3995 | ||
4c2a8c40 SC |
3996 | static __devinit int hpsa_init_reset_devices(struct pci_dev *pdev) |
3997 | { | |
1df8552a | 3998 | int rc, i; |
4c2a8c40 SC |
3999 | |
4000 | if (!reset_devices) | |
4001 | return 0; | |
4002 | ||
1df8552a SC |
4003 | /* Reset the controller with a PCI power-cycle or via doorbell */ |
4004 | rc = hpsa_kdump_hard_reset_controller(pdev); | |
4c2a8c40 | 4005 | |
1df8552a SC |
4006 | /* -ENOTSUPP here means we cannot reset the controller |
4007 | * but it's already (and still) up and running in | |
18867659 SC |
4008 | * "performant mode". Or, it might be 640x, which can't reset |
4009 | * due to concerns about shared bbwc between 6402/6404 pair. | |
1df8552a SC |
4010 | */ |
4011 | if (rc == -ENOTSUPP) | |
64670ac8 | 4012 | return rc; /* just try to do the kdump anyhow. */ |
1df8552a SC |
4013 | if (rc) |
4014 | return -ENODEV; | |
4c2a8c40 SC |
4015 | |
4016 | /* Now try to get the controller to respond to a no-op */ | |
2b870cb3 | 4017 | dev_warn(&pdev->dev, "Waiting for controller to respond to no-op\n"); |
4c2a8c40 SC |
4018 | for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) { |
4019 | if (hpsa_noop(pdev) == 0) | |
4020 | break; | |
4021 | else | |
4022 | dev_warn(&pdev->dev, "no-op failed%s\n", | |
4023 | (i < 11 ? "; re-trying" : "")); | |
4024 | } | |
4025 | return 0; | |
4026 | } | |
4027 | ||
2e9d1b36 SC |
4028 | static __devinit int hpsa_allocate_cmd_pool(struct ctlr_info *h) |
4029 | { | |
4030 | h->cmd_pool_bits = kzalloc( | |
4031 | DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) * | |
4032 | sizeof(unsigned long), GFP_KERNEL); | |
4033 | h->cmd_pool = pci_alloc_consistent(h->pdev, | |
4034 | h->nr_cmds * sizeof(*h->cmd_pool), | |
4035 | &(h->cmd_pool_dhandle)); | |
4036 | h->errinfo_pool = pci_alloc_consistent(h->pdev, | |
4037 | h->nr_cmds * sizeof(*h->errinfo_pool), | |
4038 | &(h->errinfo_pool_dhandle)); | |
4039 | if ((h->cmd_pool_bits == NULL) | |
4040 | || (h->cmd_pool == NULL) | |
4041 | || (h->errinfo_pool == NULL)) { | |
4042 | dev_err(&h->pdev->dev, "out of memory in %s", __func__); | |
4043 | return -ENOMEM; | |
4044 | } | |
4045 | return 0; | |
4046 | } | |
4047 | ||
4048 | static void hpsa_free_cmd_pool(struct ctlr_info *h) | |
4049 | { | |
4050 | kfree(h->cmd_pool_bits); | |
4051 | if (h->cmd_pool) | |
4052 | pci_free_consistent(h->pdev, | |
4053 | h->nr_cmds * sizeof(struct CommandList), | |
4054 | h->cmd_pool, h->cmd_pool_dhandle); | |
4055 | if (h->errinfo_pool) | |
4056 | pci_free_consistent(h->pdev, | |
4057 | h->nr_cmds * sizeof(struct ErrorInfo), | |
4058 | h->errinfo_pool, | |
4059 | h->errinfo_pool_dhandle); | |
4060 | } | |
4061 | ||
0ae01a32 SC |
4062 | static int hpsa_request_irq(struct ctlr_info *h, |
4063 | irqreturn_t (*msixhandler)(int, void *), | |
4064 | irqreturn_t (*intxhandler)(int, void *)) | |
4065 | { | |
4066 | int rc; | |
4067 | ||
4068 | if (h->msix_vector || h->msi_vector) | |
4069 | rc = request_irq(h->intr[h->intr_mode], msixhandler, | |
4070 | IRQF_DISABLED, h->devname, h); | |
4071 | else | |
4072 | rc = request_irq(h->intr[h->intr_mode], intxhandler, | |
4073 | IRQF_DISABLED, h->devname, h); | |
4074 | if (rc) { | |
4075 | dev_err(&h->pdev->dev, "unable to get irq %d for %s\n", | |
4076 | h->intr[h->intr_mode], h->devname); | |
4077 | return -ENODEV; | |
4078 | } | |
4079 | return 0; | |
4080 | } | |
4081 | ||
64670ac8 SC |
4082 | static int __devinit hpsa_kdump_soft_reset(struct ctlr_info *h) |
4083 | { | |
4084 | if (hpsa_send_host_reset(h, RAID_CTLR_LUNID, | |
4085 | HPSA_RESET_TYPE_CONTROLLER)) { | |
4086 | dev_warn(&h->pdev->dev, "Resetting array controller failed.\n"); | |
4087 | return -EIO; | |
4088 | } | |
4089 | ||
4090 | dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n"); | |
4091 | if (hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY)) { | |
4092 | dev_warn(&h->pdev->dev, "Soft reset had no effect.\n"); | |
4093 | return -1; | |
4094 | } | |
4095 | ||
4096 | dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n"); | |
4097 | if (hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY)) { | |
4098 | dev_warn(&h->pdev->dev, "Board failed to become ready " | |
4099 | "after soft reset.\n"); | |
4100 | return -1; | |
4101 | } | |
4102 | ||
4103 | return 0; | |
4104 | } | |
4105 | ||
4106 | static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h) | |
4107 | { | |
4108 | free_irq(h->intr[h->intr_mode], h); | |
4109 | #ifdef CONFIG_PCI_MSI | |
4110 | if (h->msix_vector) | |
4111 | pci_disable_msix(h->pdev); | |
4112 | else if (h->msi_vector) | |
4113 | pci_disable_msi(h->pdev); | |
4114 | #endif /* CONFIG_PCI_MSI */ | |
4115 | hpsa_free_sg_chain_blocks(h); | |
4116 | hpsa_free_cmd_pool(h); | |
4117 | kfree(h->blockFetchTable); | |
4118 | pci_free_consistent(h->pdev, h->reply_pool_size, | |
4119 | h->reply_pool, h->reply_pool_dhandle); | |
4120 | if (h->vaddr) | |
4121 | iounmap(h->vaddr); | |
4122 | if (h->transtable) | |
4123 | iounmap(h->transtable); | |
4124 | if (h->cfgtable) | |
4125 | iounmap(h->cfgtable); | |
4126 | pci_release_regions(h->pdev); | |
4127 | kfree(h); | |
4128 | } | |
4129 | ||
a0c12413 SC |
4130 | static void remove_ctlr_from_lockup_detector_list(struct ctlr_info *h) |
4131 | { | |
4132 | assert_spin_locked(&lockup_detector_lock); | |
4133 | if (!hpsa_lockup_detector) | |
4134 | return; | |
4135 | if (h->lockup_detected) | |
4136 | return; /* already stopped the lockup detector */ | |
4137 | list_del(&h->lockup_list); | |
4138 | } | |
4139 | ||
4140 | /* Called when controller lockup detected. */ | |
4141 | static void fail_all_cmds_on_list(struct ctlr_info *h, struct list_head *list) | |
4142 | { | |
4143 | struct CommandList *c = NULL; | |
4144 | ||
4145 | assert_spin_locked(&h->lock); | |
4146 | /* Mark all outstanding commands as failed and complete them. */ | |
4147 | while (!list_empty(list)) { | |
4148 | c = list_entry(list->next, struct CommandList, list); | |
4149 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; | |
4150 | finish_cmd(c, c->Header.Tag.lower); | |
4151 | } | |
4152 | } | |
4153 | ||
4154 | static void controller_lockup_detected(struct ctlr_info *h) | |
4155 | { | |
4156 | unsigned long flags; | |
4157 | ||
4158 | assert_spin_locked(&lockup_detector_lock); | |
4159 | remove_ctlr_from_lockup_detector_list(h); | |
4160 | h->access.set_intr_mask(h, HPSA_INTR_OFF); | |
4161 | spin_lock_irqsave(&h->lock, flags); | |
4162 | h->lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); | |
4163 | spin_unlock_irqrestore(&h->lock, flags); | |
4164 | dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x\n", | |
4165 | h->lockup_detected); | |
4166 | pci_disable_device(h->pdev); | |
4167 | spin_lock_irqsave(&h->lock, flags); | |
4168 | fail_all_cmds_on_list(h, &h->cmpQ); | |
4169 | fail_all_cmds_on_list(h, &h->reqQ); | |
4170 | spin_unlock_irqrestore(&h->lock, flags); | |
4171 | } | |
4172 | ||
4173 | #define HEARTBEAT_SAMPLE_INTERVAL (10 * HZ) | |
4174 | #define HEARTBEAT_CHECK_MINIMUM_INTERVAL (HEARTBEAT_SAMPLE_INTERVAL / 2) | |
4175 | ||
4176 | static void detect_controller_lockup(struct ctlr_info *h) | |
4177 | { | |
4178 | u64 now; | |
4179 | u32 heartbeat; | |
4180 | unsigned long flags; | |
4181 | ||
4182 | assert_spin_locked(&lockup_detector_lock); | |
4183 | now = get_jiffies_64(); | |
4184 | /* If we've received an interrupt recently, we're ok. */ | |
4185 | if (time_after64(h->last_intr_timestamp + | |
4186 | (HEARTBEAT_CHECK_MINIMUM_INTERVAL), now)) | |
4187 | return; | |
4188 | ||
4189 | /* | |
4190 | * If we've already checked the heartbeat recently, we're ok. | |
4191 | * This could happen if someone sends us a signal. We | |
4192 | * otherwise don't care about signals in this thread. | |
4193 | */ | |
4194 | if (time_after64(h->last_heartbeat_timestamp + | |
4195 | (HEARTBEAT_CHECK_MINIMUM_INTERVAL), now)) | |
4196 | return; | |
4197 | ||
4198 | /* If heartbeat has not changed since we last looked, we're not ok. */ | |
4199 | spin_lock_irqsave(&h->lock, flags); | |
4200 | heartbeat = readl(&h->cfgtable->HeartBeat); | |
4201 | spin_unlock_irqrestore(&h->lock, flags); | |
4202 | if (h->last_heartbeat == heartbeat) { | |
4203 | controller_lockup_detected(h); | |
4204 | return; | |
4205 | } | |
4206 | ||
4207 | /* We're ok. */ | |
4208 | h->last_heartbeat = heartbeat; | |
4209 | h->last_heartbeat_timestamp = now; | |
4210 | } | |
4211 | ||
4212 | static int detect_controller_lockup_thread(void *notused) | |
4213 | { | |
4214 | struct ctlr_info *h; | |
4215 | unsigned long flags; | |
4216 | ||
4217 | while (1) { | |
4218 | struct list_head *this, *tmp; | |
4219 | ||
4220 | schedule_timeout_interruptible(HEARTBEAT_SAMPLE_INTERVAL); | |
4221 | if (kthread_should_stop()) | |
4222 | break; | |
4223 | spin_lock_irqsave(&lockup_detector_lock, flags); | |
4224 | list_for_each_safe(this, tmp, &hpsa_ctlr_list) { | |
4225 | h = list_entry(this, struct ctlr_info, lockup_list); | |
4226 | detect_controller_lockup(h); | |
4227 | } | |
4228 | spin_unlock_irqrestore(&lockup_detector_lock, flags); | |
4229 | } | |
4230 | return 0; | |
4231 | } | |
4232 | ||
4233 | static void add_ctlr_to_lockup_detector_list(struct ctlr_info *h) | |
4234 | { | |
4235 | unsigned long flags; | |
4236 | ||
4237 | spin_lock_irqsave(&lockup_detector_lock, flags); | |
4238 | list_add_tail(&h->lockup_list, &hpsa_ctlr_list); | |
4239 | spin_unlock_irqrestore(&lockup_detector_lock, flags); | |
4240 | } | |
4241 | ||
4242 | static void start_controller_lockup_detector(struct ctlr_info *h) | |
4243 | { | |
4244 | /* Start the lockup detector thread if not already started */ | |
4245 | if (!hpsa_lockup_detector) { | |
4246 | spin_lock_init(&lockup_detector_lock); | |
4247 | hpsa_lockup_detector = | |
4248 | kthread_run(detect_controller_lockup_thread, | |
4249 | NULL, "hpsa"); | |
4250 | } | |
4251 | if (!hpsa_lockup_detector) { | |
4252 | dev_warn(&h->pdev->dev, | |
4253 | "Could not start lockup detector thread\n"); | |
4254 | return; | |
4255 | } | |
4256 | add_ctlr_to_lockup_detector_list(h); | |
4257 | } | |
4258 | ||
4259 | static void stop_controller_lockup_detector(struct ctlr_info *h) | |
4260 | { | |
4261 | unsigned long flags; | |
4262 | ||
4263 | spin_lock_irqsave(&lockup_detector_lock, flags); | |
4264 | remove_ctlr_from_lockup_detector_list(h); | |
4265 | /* If the list of ctlr's to monitor is empty, stop the thread */ | |
4266 | if (list_empty(&hpsa_ctlr_list)) { | |
4267 | kthread_stop(hpsa_lockup_detector); | |
4268 | hpsa_lockup_detector = NULL; | |
4269 | } | |
4270 | spin_unlock_irqrestore(&lockup_detector_lock, flags); | |
4271 | } | |
4272 | ||
edd16368 SC |
4273 | static int __devinit hpsa_init_one(struct pci_dev *pdev, |
4274 | const struct pci_device_id *ent) | |
4275 | { | |
4c2a8c40 | 4276 | int dac, rc; |
edd16368 | 4277 | struct ctlr_info *h; |
64670ac8 SC |
4278 | int try_soft_reset = 0; |
4279 | unsigned long flags; | |
edd16368 SC |
4280 | |
4281 | if (number_of_controllers == 0) | |
4282 | printk(KERN_INFO DRIVER_NAME "\n"); | |
edd16368 | 4283 | |
4c2a8c40 | 4284 | rc = hpsa_init_reset_devices(pdev); |
64670ac8 SC |
4285 | if (rc) { |
4286 | if (rc != -ENOTSUPP) | |
4287 | return rc; | |
4288 | /* If the reset fails in a particular way (it has no way to do | |
4289 | * a proper hard reset, so returns -ENOTSUPP) we can try to do | |
4290 | * a soft reset once we get the controller configured up to the | |
4291 | * point that it can accept a command. | |
4292 | */ | |
4293 | try_soft_reset = 1; | |
4294 | rc = 0; | |
4295 | } | |
4296 | ||
4297 | reinit_after_soft_reset: | |
edd16368 | 4298 | |
303932fd DB |
4299 | /* Command structures must be aligned on a 32-byte boundary because |
4300 | * the 5 lower bits of the address are used by the hardware. and by | |
4301 | * the driver. See comments in hpsa.h for more info. | |
4302 | */ | |
4303 | #define COMMANDLIST_ALIGNMENT 32 | |
4304 | BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT); | |
edd16368 SC |
4305 | h = kzalloc(sizeof(*h), GFP_KERNEL); |
4306 | if (!h) | |
ecd9aad4 | 4307 | return -ENOMEM; |
edd16368 | 4308 | |
55c06c71 | 4309 | h->pdev = pdev; |
a9a3a273 | 4310 | h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT; |
9e0fc764 SC |
4311 | INIT_LIST_HEAD(&h->cmpQ); |
4312 | INIT_LIST_HEAD(&h->reqQ); | |
6eaf46fd SC |
4313 | spin_lock_init(&h->lock); |
4314 | spin_lock_init(&h->scan_lock); | |
55c06c71 | 4315 | rc = hpsa_pci_init(h); |
ecd9aad4 | 4316 | if (rc != 0) |
edd16368 SC |
4317 | goto clean1; |
4318 | ||
4319 | sprintf(h->devname, "hpsa%d", number_of_controllers); | |
4320 | h->ctlr = number_of_controllers; | |
4321 | number_of_controllers++; | |
edd16368 SC |
4322 | |
4323 | /* configure PCI DMA stuff */ | |
ecd9aad4 SC |
4324 | rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); |
4325 | if (rc == 0) { | |
edd16368 | 4326 | dac = 1; |
ecd9aad4 SC |
4327 | } else { |
4328 | rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); | |
4329 | if (rc == 0) { | |
4330 | dac = 0; | |
4331 | } else { | |
4332 | dev_err(&pdev->dev, "no suitable DMA available\n"); | |
4333 | goto clean1; | |
4334 | } | |
edd16368 SC |
4335 | } |
4336 | ||
4337 | /* make sure the board interrupts are off */ | |
4338 | h->access.set_intr_mask(h, HPSA_INTR_OFF); | |
10f66018 | 4339 | |
0ae01a32 | 4340 | if (hpsa_request_irq(h, do_hpsa_intr_msi, do_hpsa_intr_intx)) |
edd16368 | 4341 | goto clean2; |
303932fd DB |
4342 | dev_info(&pdev->dev, "%s: <0x%x> at IRQ %d%s using DAC\n", |
4343 | h->devname, pdev->device, | |
a9a3a273 | 4344 | h->intr[h->intr_mode], dac ? "" : " not"); |
2e9d1b36 | 4345 | if (hpsa_allocate_cmd_pool(h)) |
edd16368 | 4346 | goto clean4; |
33a2ffce SC |
4347 | if (hpsa_allocate_sg_chain_blocks(h)) |
4348 | goto clean4; | |
a08a8471 SC |
4349 | init_waitqueue_head(&h->scan_wait_queue); |
4350 | h->scan_finished = 1; /* no scan currently in progress */ | |
edd16368 SC |
4351 | |
4352 | pci_set_drvdata(pdev, h); | |
9a41338e SC |
4353 | h->ndevices = 0; |
4354 | h->scsi_host = NULL; | |
4355 | spin_lock_init(&h->devlock); | |
64670ac8 SC |
4356 | hpsa_put_ctlr_into_performant_mode(h); |
4357 | ||
4358 | /* At this point, the controller is ready to take commands. | |
4359 | * Now, if reset_devices and the hard reset didn't work, try | |
4360 | * the soft reset and see if that works. | |
4361 | */ | |
4362 | if (try_soft_reset) { | |
4363 | ||
4364 | /* This is kind of gross. We may or may not get a completion | |
4365 | * from the soft reset command, and if we do, then the value | |
4366 | * from the fifo may or may not be valid. So, we wait 10 secs | |
4367 | * after the reset throwing away any completions we get during | |
4368 | * that time. Unregister the interrupt handler and register | |
4369 | * fake ones to scoop up any residual completions. | |
4370 | */ | |
4371 | spin_lock_irqsave(&h->lock, flags); | |
4372 | h->access.set_intr_mask(h, HPSA_INTR_OFF); | |
4373 | spin_unlock_irqrestore(&h->lock, flags); | |
4374 | free_irq(h->intr[h->intr_mode], h); | |
4375 | rc = hpsa_request_irq(h, hpsa_msix_discard_completions, | |
4376 | hpsa_intx_discard_completions); | |
4377 | if (rc) { | |
4378 | dev_warn(&h->pdev->dev, "Failed to request_irq after " | |
4379 | "soft reset.\n"); | |
4380 | goto clean4; | |
4381 | } | |
4382 | ||
4383 | rc = hpsa_kdump_soft_reset(h); | |
4384 | if (rc) | |
4385 | /* Neither hard nor soft reset worked, we're hosed. */ | |
4386 | goto clean4; | |
4387 | ||
4388 | dev_info(&h->pdev->dev, "Board READY.\n"); | |
4389 | dev_info(&h->pdev->dev, | |
4390 | "Waiting for stale completions to drain.\n"); | |
4391 | h->access.set_intr_mask(h, HPSA_INTR_ON); | |
4392 | msleep(10000); | |
4393 | h->access.set_intr_mask(h, HPSA_INTR_OFF); | |
4394 | ||
4395 | rc = controller_reset_failed(h->cfgtable); | |
4396 | if (rc) | |
4397 | dev_info(&h->pdev->dev, | |
4398 | "Soft reset appears to have failed.\n"); | |
4399 | ||
4400 | /* since the controller's reset, we have to go back and re-init | |
4401 | * everything. Easiest to just forget what we've done and do it | |
4402 | * all over again. | |
4403 | */ | |
4404 | hpsa_undo_allocations_after_kdump_soft_reset(h); | |
4405 | try_soft_reset = 0; | |
4406 | if (rc) | |
4407 | /* don't go to clean4, we already unallocated */ | |
4408 | return -ENODEV; | |
4409 | ||
4410 | goto reinit_after_soft_reset; | |
4411 | } | |
edd16368 SC |
4412 | |
4413 | /* Turn the interrupts on so we can service requests */ | |
4414 | h->access.set_intr_mask(h, HPSA_INTR_ON); | |
4415 | ||
339b2b14 | 4416 | hpsa_hba_inquiry(h); |
edd16368 | 4417 | hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */ |
a0c12413 | 4418 | start_controller_lockup_detector(h); |
edd16368 SC |
4419 | return 1; |
4420 | ||
4421 | clean4: | |
33a2ffce | 4422 | hpsa_free_sg_chain_blocks(h); |
2e9d1b36 | 4423 | hpsa_free_cmd_pool(h); |
a9a3a273 | 4424 | free_irq(h->intr[h->intr_mode], h); |
edd16368 SC |
4425 | clean2: |
4426 | clean1: | |
edd16368 | 4427 | kfree(h); |
ecd9aad4 | 4428 | return rc; |
edd16368 SC |
4429 | } |
4430 | ||
4431 | static void hpsa_flush_cache(struct ctlr_info *h) | |
4432 | { | |
4433 | char *flush_buf; | |
4434 | struct CommandList *c; | |
4435 | ||
4436 | flush_buf = kzalloc(4, GFP_KERNEL); | |
4437 | if (!flush_buf) | |
4438 | return; | |
4439 | ||
4440 | c = cmd_special_alloc(h); | |
4441 | if (!c) { | |
4442 | dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); | |
4443 | goto out_of_memory; | |
4444 | } | |
4445 | fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0, | |
4446 | RAID_CTLR_LUNID, TYPE_CMD); | |
4447 | hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_TODEVICE); | |
4448 | if (c->err_info->CommandStatus != 0) | |
4449 | dev_warn(&h->pdev->dev, | |
4450 | "error flushing cache on controller\n"); | |
4451 | cmd_special_free(h, c); | |
4452 | out_of_memory: | |
4453 | kfree(flush_buf); | |
4454 | } | |
4455 | ||
4456 | static void hpsa_shutdown(struct pci_dev *pdev) | |
4457 | { | |
4458 | struct ctlr_info *h; | |
4459 | ||
4460 | h = pci_get_drvdata(pdev); | |
4461 | /* Turn board interrupts off and send the flush cache command | |
4462 | * sendcmd will turn off interrupt, and send the flush... | |
4463 | * To write all data in the battery backed cache to disks | |
4464 | */ | |
4465 | hpsa_flush_cache(h); | |
4466 | h->access.set_intr_mask(h, HPSA_INTR_OFF); | |
a9a3a273 | 4467 | free_irq(h->intr[h->intr_mode], h); |
edd16368 SC |
4468 | #ifdef CONFIG_PCI_MSI |
4469 | if (h->msix_vector) | |
4470 | pci_disable_msix(h->pdev); | |
4471 | else if (h->msi_vector) | |
4472 | pci_disable_msi(h->pdev); | |
4473 | #endif /* CONFIG_PCI_MSI */ | |
4474 | } | |
4475 | ||
4476 | static void __devexit hpsa_remove_one(struct pci_dev *pdev) | |
4477 | { | |
4478 | struct ctlr_info *h; | |
4479 | ||
4480 | if (pci_get_drvdata(pdev) == NULL) { | |
a0c12413 | 4481 | dev_err(&pdev->dev, "unable to remove device\n"); |
edd16368 SC |
4482 | return; |
4483 | } | |
4484 | h = pci_get_drvdata(pdev); | |
a0c12413 | 4485 | stop_controller_lockup_detector(h); |
edd16368 SC |
4486 | hpsa_unregister_scsi(h); /* unhook from SCSI subsystem */ |
4487 | hpsa_shutdown(pdev); | |
4488 | iounmap(h->vaddr); | |
204892e9 SC |
4489 | iounmap(h->transtable); |
4490 | iounmap(h->cfgtable); | |
33a2ffce | 4491 | hpsa_free_sg_chain_blocks(h); |
edd16368 SC |
4492 | pci_free_consistent(h->pdev, |
4493 | h->nr_cmds * sizeof(struct CommandList), | |
4494 | h->cmd_pool, h->cmd_pool_dhandle); | |
4495 | pci_free_consistent(h->pdev, | |
4496 | h->nr_cmds * sizeof(struct ErrorInfo), | |
4497 | h->errinfo_pool, h->errinfo_pool_dhandle); | |
303932fd DB |
4498 | pci_free_consistent(h->pdev, h->reply_pool_size, |
4499 | h->reply_pool, h->reply_pool_dhandle); | |
edd16368 | 4500 | kfree(h->cmd_pool_bits); |
303932fd | 4501 | kfree(h->blockFetchTable); |
339b2b14 | 4502 | kfree(h->hba_inquiry_data); |
edd16368 SC |
4503 | /* |
4504 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4505 | * Smart Array controllers that pci_enable_device does not undo | |
4506 | */ | |
4507 | pci_release_regions(pdev); | |
4508 | pci_set_drvdata(pdev, NULL); | |
edd16368 SC |
4509 | kfree(h); |
4510 | } | |
4511 | ||
4512 | static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev, | |
4513 | __attribute__((unused)) pm_message_t state) | |
4514 | { | |
4515 | return -ENOSYS; | |
4516 | } | |
4517 | ||
4518 | static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev) | |
4519 | { | |
4520 | return -ENOSYS; | |
4521 | } | |
4522 | ||
4523 | static struct pci_driver hpsa_pci_driver = { | |
4524 | .name = "hpsa", | |
4525 | .probe = hpsa_init_one, | |
4526 | .remove = __devexit_p(hpsa_remove_one), | |
4527 | .id_table = hpsa_pci_device_id, /* id_table */ | |
4528 | .shutdown = hpsa_shutdown, | |
4529 | .suspend = hpsa_suspend, | |
4530 | .resume = hpsa_resume, | |
4531 | }; | |
4532 | ||
303932fd DB |
4533 | /* Fill in bucket_map[], given nsgs (the max number of |
4534 | * scatter gather elements supported) and bucket[], | |
4535 | * which is an array of 8 integers. The bucket[] array | |
4536 | * contains 8 different DMA transfer sizes (in 16 | |
4537 | * byte increments) which the controller uses to fetch | |
4538 | * commands. This function fills in bucket_map[], which | |
4539 | * maps a given number of scatter gather elements to one of | |
4540 | * the 8 DMA transfer sizes. The point of it is to allow the | |
4541 | * controller to only do as much DMA as needed to fetch the | |
4542 | * command, with the DMA transfer size encoded in the lower | |
4543 | * bits of the command address. | |
4544 | */ | |
4545 | static void calc_bucket_map(int bucket[], int num_buckets, | |
4546 | int nsgs, int *bucket_map) | |
4547 | { | |
4548 | int i, j, b, size; | |
4549 | ||
4550 | /* even a command with 0 SGs requires 4 blocks */ | |
4551 | #define MINIMUM_TRANSFER_BLOCKS 4 | |
4552 | #define NUM_BUCKETS 8 | |
4553 | /* Note, bucket_map must have nsgs+1 entries. */ | |
4554 | for (i = 0; i <= nsgs; i++) { | |
4555 | /* Compute size of a command with i SG entries */ | |
4556 | size = i + MINIMUM_TRANSFER_BLOCKS; | |
4557 | b = num_buckets; /* Assume the biggest bucket */ | |
4558 | /* Find the bucket that is just big enough */ | |
4559 | for (j = 0; j < 8; j++) { | |
4560 | if (bucket[j] >= size) { | |
4561 | b = j; | |
4562 | break; | |
4563 | } | |
4564 | } | |
4565 | /* for a command with i SG entries, use bucket b. */ | |
4566 | bucket_map[i] = b; | |
4567 | } | |
4568 | } | |
4569 | ||
960a30e7 SC |
4570 | static __devinit void hpsa_enter_performant_mode(struct ctlr_info *h, |
4571 | u32 use_short_tags) | |
303932fd | 4572 | { |
6c311b57 SC |
4573 | int i; |
4574 | unsigned long register_value; | |
def342bd SC |
4575 | |
4576 | /* This is a bit complicated. There are 8 registers on | |
4577 | * the controller which we write to to tell it 8 different | |
4578 | * sizes of commands which there may be. It's a way of | |
4579 | * reducing the DMA done to fetch each command. Encoded into | |
4580 | * each command's tag are 3 bits which communicate to the controller | |
4581 | * which of the eight sizes that command fits within. The size of | |
4582 | * each command depends on how many scatter gather entries there are. | |
4583 | * Each SG entry requires 16 bytes. The eight registers are programmed | |
4584 | * with the number of 16-byte blocks a command of that size requires. | |
4585 | * The smallest command possible requires 5 such 16 byte blocks. | |
4586 | * the largest command possible requires MAXSGENTRIES + 4 16-byte | |
4587 | * blocks. Note, this only extends to the SG entries contained | |
4588 | * within the command block, and does not extend to chained blocks | |
4589 | * of SG elements. bft[] contains the eight values we write to | |
4590 | * the registers. They are not evenly distributed, but have more | |
4591 | * sizes for small commands, and fewer sizes for larger commands. | |
4592 | */ | |
4593 | int bft[8] = {5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES + 4}; | |
4594 | BUILD_BUG_ON(28 > MAXSGENTRIES + 4); | |
303932fd DB |
4595 | /* 5 = 1 s/g entry or 4k |
4596 | * 6 = 2 s/g entry or 8k | |
4597 | * 8 = 4 s/g entry or 16k | |
4598 | * 10 = 6 s/g entry or 24k | |
4599 | */ | |
303932fd DB |
4600 | |
4601 | h->reply_pool_wraparound = 1; /* spec: init to 1 */ | |
4602 | ||
4603 | /* Controller spec: zero out this buffer. */ | |
4604 | memset(h->reply_pool, 0, h->reply_pool_size); | |
4605 | h->reply_pool_head = h->reply_pool; | |
4606 | ||
303932fd DB |
4607 | bft[7] = h->max_sg_entries + 4; |
4608 | calc_bucket_map(bft, ARRAY_SIZE(bft), 32, h->blockFetchTable); | |
4609 | for (i = 0; i < 8; i++) | |
4610 | writel(bft[i], &h->transtable->BlockFetch[i]); | |
4611 | ||
4612 | /* size of controller ring buffer */ | |
4613 | writel(h->max_commands, &h->transtable->RepQSize); | |
4614 | writel(1, &h->transtable->RepQCount); | |
4615 | writel(0, &h->transtable->RepQCtrAddrLow32); | |
4616 | writel(0, &h->transtable->RepQCtrAddrHigh32); | |
4617 | writel(h->reply_pool_dhandle, &h->transtable->RepQAddr0Low32); | |
4618 | writel(0, &h->transtable->RepQAddr0High32); | |
960a30e7 | 4619 | writel(CFGTBL_Trans_Performant | use_short_tags, |
303932fd DB |
4620 | &(h->cfgtable->HostWrite.TransportRequest)); |
4621 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); | |
3f4336f3 | 4622 | hpsa_wait_for_mode_change_ack(h); |
303932fd DB |
4623 | register_value = readl(&(h->cfgtable->TransportActive)); |
4624 | if (!(register_value & CFGTBL_Trans_Performant)) { | |
4625 | dev_warn(&h->pdev->dev, "unable to get board into" | |
4626 | " performant mode\n"); | |
4627 | return; | |
4628 | } | |
960a30e7 SC |
4629 | /* Change the access methods to the performant access methods */ |
4630 | h->access = SA5_performant_access; | |
4631 | h->transMethod = CFGTBL_Trans_Performant; | |
6c311b57 SC |
4632 | } |
4633 | ||
4634 | static __devinit void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) | |
4635 | { | |
4636 | u32 trans_support; | |
4637 | ||
02ec19c8 SC |
4638 | if (hpsa_simple_mode) |
4639 | return; | |
4640 | ||
6c311b57 SC |
4641 | trans_support = readl(&(h->cfgtable->TransportSupport)); |
4642 | if (!(trans_support & PERFORMANT_MODE)) | |
4643 | return; | |
4644 | ||
cba3d38b | 4645 | hpsa_get_max_perf_mode_cmds(h); |
6c311b57 SC |
4646 | h->max_sg_entries = 32; |
4647 | /* Performant mode ring buffer and supporting data structures */ | |
4648 | h->reply_pool_size = h->max_commands * sizeof(u64); | |
4649 | h->reply_pool = pci_alloc_consistent(h->pdev, h->reply_pool_size, | |
4650 | &(h->reply_pool_dhandle)); | |
4651 | ||
4652 | /* Need a block fetch table for performant mode */ | |
4653 | h->blockFetchTable = kmalloc(((h->max_sg_entries+1) * | |
4654 | sizeof(u32)), GFP_KERNEL); | |
4655 | ||
4656 | if ((h->reply_pool == NULL) | |
4657 | || (h->blockFetchTable == NULL)) | |
4658 | goto clean_up; | |
4659 | ||
960a30e7 SC |
4660 | hpsa_enter_performant_mode(h, |
4661 | trans_support & CFGTBL_Trans_use_short_tags); | |
303932fd DB |
4662 | |
4663 | return; | |
4664 | ||
4665 | clean_up: | |
4666 | if (h->reply_pool) | |
4667 | pci_free_consistent(h->pdev, h->reply_pool_size, | |
4668 | h->reply_pool, h->reply_pool_dhandle); | |
4669 | kfree(h->blockFetchTable); | |
4670 | } | |
4671 | ||
edd16368 SC |
4672 | /* |
4673 | * This is it. Register the PCI driver information for the cards we control | |
4674 | * the OS will call our registered routines when it finds one of our cards. | |
4675 | */ | |
4676 | static int __init hpsa_init(void) | |
4677 | { | |
31468401 | 4678 | return pci_register_driver(&hpsa_pci_driver); |
edd16368 SC |
4679 | } |
4680 | ||
4681 | static void __exit hpsa_cleanup(void) | |
4682 | { | |
4683 | pci_unregister_driver(&hpsa_pci_driver); | |
edd16368 SC |
4684 | } |
4685 | ||
4686 | module_init(hpsa_init); | |
4687 | module_exit(hpsa_cleanup); |