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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> | |
49 | #include <asm/atomic.h> | |
50 | #include <linux/kthread.h> | |
51 | #include "hpsa_cmd.h" | |
52 | #include "hpsa.h" | |
53 | ||
54 | /* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */ | |
31468401 | 55 | #define HPSA_DRIVER_VERSION "2.0.2-1" |
edd16368 SC |
56 | #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")" |
57 | ||
58 | /* How long to wait (in milliseconds) for board to go into simple mode */ | |
59 | #define MAX_CONFIG_WAIT 30000 | |
60 | #define MAX_IOCTL_CONFIG_WAIT 1000 | |
61 | ||
62 | /*define how many times we will try a command because of bus resets */ | |
63 | #define MAX_CMD_RETRIES 3 | |
64 | ||
65 | /* Embedded module documentation macros - see modules.h */ | |
66 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
67 | MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \ | |
68 | HPSA_DRIVER_VERSION); | |
69 | MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers"); | |
70 | MODULE_VERSION(HPSA_DRIVER_VERSION); | |
71 | MODULE_LICENSE("GPL"); | |
72 | ||
73 | static int hpsa_allow_any; | |
74 | module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR); | |
75 | MODULE_PARM_DESC(hpsa_allow_any, | |
76 | "Allow hpsa driver to access unknown HP Smart Array hardware"); | |
02ec19c8 SC |
77 | static int hpsa_simple_mode; |
78 | module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR); | |
79 | MODULE_PARM_DESC(hpsa_simple_mode, | |
80 | "Use 'simple mode' rather than 'performant mode'"); | |
edd16368 SC |
81 | |
82 | /* define the PCI info for the cards we can control */ | |
83 | static const struct pci_device_id hpsa_pci_device_id[] = { | |
edd16368 SC |
84 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, |
85 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, | |
86 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, | |
87 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, | |
88 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, | |
89 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324a}, | |
90 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324b}, | |
f8b01eb9 | 91 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233}, |
2e931f31 SC |
92 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3250}, |
93 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3251}, | |
94 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3252}, | |
95 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3253}, | |
96 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3254}, | |
7c03b870 | 97 | {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, |
6798cc0a | 98 | PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, |
edd16368 SC |
99 | {0,} |
100 | }; | |
101 | ||
102 | MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id); | |
103 | ||
104 | /* board_id = Subsystem Device ID & Vendor ID | |
105 | * product = Marketing Name for the board | |
106 | * access = Address of the struct of function pointers | |
107 | */ | |
108 | static struct board_type products[] = { | |
edd16368 SC |
109 | {0x3241103C, "Smart Array P212", &SA5_access}, |
110 | {0x3243103C, "Smart Array P410", &SA5_access}, | |
111 | {0x3245103C, "Smart Array P410i", &SA5_access}, | |
112 | {0x3247103C, "Smart Array P411", &SA5_access}, | |
113 | {0x3249103C, "Smart Array P812", &SA5_access}, | |
114 | {0x324a103C, "Smart Array P712m", &SA5_access}, | |
115 | {0x324b103C, "Smart Array P711m", &SA5_access}, | |
2e931f31 SC |
116 | {0x3250103C, "Smart Array", &SA5_access}, |
117 | {0x3250113C, "Smart Array", &SA5_access}, | |
118 | {0x3250123C, "Smart Array", &SA5_access}, | |
119 | {0x3250133C, "Smart Array", &SA5_access}, | |
120 | {0x3250143C, "Smart Array", &SA5_access}, | |
edd16368 SC |
121 | {0xFFFF103C, "Unknown Smart Array", &SA5_access}, |
122 | }; | |
123 | ||
124 | static int number_of_controllers; | |
125 | ||
10f66018 SC |
126 | static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id); |
127 | static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id); | |
edd16368 SC |
128 | static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg); |
129 | static void start_io(struct ctlr_info *h); | |
130 | ||
131 | #ifdef CONFIG_COMPAT | |
132 | static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg); | |
133 | #endif | |
134 | ||
135 | static void cmd_free(struct ctlr_info *h, struct CommandList *c); | |
136 | static void cmd_special_free(struct ctlr_info *h, struct CommandList *c); | |
137 | static struct CommandList *cmd_alloc(struct ctlr_info *h); | |
138 | static struct CommandList *cmd_special_alloc(struct ctlr_info *h); | |
01a02ffc SC |
139 | static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, |
140 | void *buff, size_t size, u8 page_code, unsigned char *scsi3addr, | |
edd16368 SC |
141 | int cmd_type); |
142 | ||
f281233d | 143 | static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd); |
a08a8471 SC |
144 | static void hpsa_scan_start(struct Scsi_Host *); |
145 | static int hpsa_scan_finished(struct Scsi_Host *sh, | |
146 | unsigned long elapsed_time); | |
667e23d4 SC |
147 | static int hpsa_change_queue_depth(struct scsi_device *sdev, |
148 | int qdepth, int reason); | |
edd16368 SC |
149 | |
150 | static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd); | |
151 | static int hpsa_slave_alloc(struct scsi_device *sdev); | |
152 | static void hpsa_slave_destroy(struct scsi_device *sdev); | |
153 | ||
154 | static ssize_t raid_level_show(struct device *dev, | |
155 | struct device_attribute *attr, char *buf); | |
156 | static ssize_t lunid_show(struct device *dev, | |
157 | struct device_attribute *attr, char *buf); | |
158 | static ssize_t unique_id_show(struct device *dev, | |
159 | struct device_attribute *attr, char *buf); | |
d28ce020 SC |
160 | static ssize_t host_show_firmware_revision(struct device *dev, |
161 | struct device_attribute *attr, char *buf); | |
94a13649 SC |
162 | static ssize_t host_show_commands_outstanding(struct device *dev, |
163 | struct device_attribute *attr, char *buf); | |
edd16368 SC |
164 | static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno); |
165 | static ssize_t host_store_rescan(struct device *dev, | |
166 | struct device_attribute *attr, const char *buf, size_t count); | |
167 | static int check_for_unit_attention(struct ctlr_info *h, | |
168 | struct CommandList *c); | |
169 | static void check_ioctl_unit_attention(struct ctlr_info *h, | |
170 | struct CommandList *c); | |
303932fd DB |
171 | /* performant mode helper functions */ |
172 | static void calc_bucket_map(int *bucket, int num_buckets, | |
173 | int nsgs, int *bucket_map); | |
7136f9a7 | 174 | static __devinit void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h); |
303932fd | 175 | static inline u32 next_command(struct ctlr_info *h); |
1df8552a SC |
176 | static int __devinit hpsa_find_cfg_addrs(struct pci_dev *pdev, |
177 | void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, | |
178 | u64 *cfg_offset); | |
179 | static int __devinit hpsa_pci_find_memory_BAR(struct pci_dev *pdev, | |
180 | unsigned long *memory_bar); | |
18867659 | 181 | static int __devinit hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id); |
fe5389c8 SC |
182 | static int __devinit hpsa_wait_for_board_state(struct pci_dev *pdev, |
183 | void __iomem *vaddr, int wait_for_ready); | |
184 | #define BOARD_NOT_READY 0 | |
185 | #define BOARD_READY 1 | |
edd16368 SC |
186 | |
187 | static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL); | |
188 | static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL); | |
189 | static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL); | |
190 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); | |
d28ce020 SC |
191 | static DEVICE_ATTR(firmware_revision, S_IRUGO, |
192 | host_show_firmware_revision, NULL); | |
94a13649 SC |
193 | static DEVICE_ATTR(commands_outstanding, S_IRUGO, |
194 | host_show_commands_outstanding, NULL); | |
edd16368 SC |
195 | |
196 | static struct device_attribute *hpsa_sdev_attrs[] = { | |
197 | &dev_attr_raid_level, | |
198 | &dev_attr_lunid, | |
199 | &dev_attr_unique_id, | |
200 | NULL, | |
201 | }; | |
202 | ||
203 | static struct device_attribute *hpsa_shost_attrs[] = { | |
204 | &dev_attr_rescan, | |
d28ce020 | 205 | &dev_attr_firmware_revision, |
94a13649 | 206 | &dev_attr_commands_outstanding, |
edd16368 SC |
207 | NULL, |
208 | }; | |
209 | ||
210 | static struct scsi_host_template hpsa_driver_template = { | |
211 | .module = THIS_MODULE, | |
212 | .name = "hpsa", | |
213 | .proc_name = "hpsa", | |
214 | .queuecommand = hpsa_scsi_queue_command, | |
a08a8471 SC |
215 | .scan_start = hpsa_scan_start, |
216 | .scan_finished = hpsa_scan_finished, | |
667e23d4 | 217 | .change_queue_depth = hpsa_change_queue_depth, |
edd16368 | 218 | .this_id = -1, |
edd16368 SC |
219 | .use_clustering = ENABLE_CLUSTERING, |
220 | .eh_device_reset_handler = hpsa_eh_device_reset_handler, | |
221 | .ioctl = hpsa_ioctl, | |
222 | .slave_alloc = hpsa_slave_alloc, | |
223 | .slave_destroy = hpsa_slave_destroy, | |
224 | #ifdef CONFIG_COMPAT | |
225 | .compat_ioctl = hpsa_compat_ioctl, | |
226 | #endif | |
227 | .sdev_attrs = hpsa_sdev_attrs, | |
228 | .shost_attrs = hpsa_shost_attrs, | |
229 | }; | |
230 | ||
231 | static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev) | |
232 | { | |
233 | unsigned long *priv = shost_priv(sdev->host); | |
234 | return (struct ctlr_info *) *priv; | |
235 | } | |
236 | ||
a23513e8 SC |
237 | static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh) |
238 | { | |
239 | unsigned long *priv = shost_priv(sh); | |
240 | return (struct ctlr_info *) *priv; | |
241 | } | |
242 | ||
edd16368 SC |
243 | static int check_for_unit_attention(struct ctlr_info *h, |
244 | struct CommandList *c) | |
245 | { | |
246 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) | |
247 | return 0; | |
248 | ||
249 | switch (c->err_info->SenseInfo[12]) { | |
250 | case STATE_CHANGED: | |
251 | dev_warn(&h->pdev->dev, "hpsa%d: a state change " | |
252 | "detected, command retried\n", h->ctlr); | |
253 | break; | |
254 | case LUN_FAILED: | |
255 | dev_warn(&h->pdev->dev, "hpsa%d: LUN failure " | |
256 | "detected, action required\n", h->ctlr); | |
257 | break; | |
258 | case REPORT_LUNS_CHANGED: | |
259 | dev_warn(&h->pdev->dev, "hpsa%d: report LUN data " | |
31468401 | 260 | "changed, action required\n", h->ctlr); |
edd16368 | 261 | /* |
edd16368 SC |
262 | * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012. |
263 | */ | |
264 | break; | |
265 | case POWER_OR_RESET: | |
266 | dev_warn(&h->pdev->dev, "hpsa%d: a power on " | |
267 | "or device reset detected\n", h->ctlr); | |
268 | break; | |
269 | case UNIT_ATTENTION_CLEARED: | |
270 | dev_warn(&h->pdev->dev, "hpsa%d: unit attention " | |
271 | "cleared by another initiator\n", h->ctlr); | |
272 | break; | |
273 | default: | |
274 | dev_warn(&h->pdev->dev, "hpsa%d: unknown " | |
275 | "unit attention detected\n", h->ctlr); | |
276 | break; | |
277 | } | |
278 | return 1; | |
279 | } | |
280 | ||
281 | static ssize_t host_store_rescan(struct device *dev, | |
282 | struct device_attribute *attr, | |
283 | const char *buf, size_t count) | |
284 | { | |
285 | struct ctlr_info *h; | |
286 | struct Scsi_Host *shost = class_to_shost(dev); | |
a23513e8 | 287 | h = shost_to_hba(shost); |
31468401 | 288 | hpsa_scan_start(h->scsi_host); |
edd16368 SC |
289 | return count; |
290 | } | |
291 | ||
d28ce020 SC |
292 | static ssize_t host_show_firmware_revision(struct device *dev, |
293 | struct device_attribute *attr, char *buf) | |
294 | { | |
295 | struct ctlr_info *h; | |
296 | struct Scsi_Host *shost = class_to_shost(dev); | |
297 | unsigned char *fwrev; | |
298 | ||
299 | h = shost_to_hba(shost); | |
300 | if (!h->hba_inquiry_data) | |
301 | return 0; | |
302 | fwrev = &h->hba_inquiry_data[32]; | |
303 | return snprintf(buf, 20, "%c%c%c%c\n", | |
304 | fwrev[0], fwrev[1], fwrev[2], fwrev[3]); | |
305 | } | |
306 | ||
94a13649 SC |
307 | static ssize_t host_show_commands_outstanding(struct device *dev, |
308 | struct device_attribute *attr, char *buf) | |
309 | { | |
310 | struct Scsi_Host *shost = class_to_shost(dev); | |
311 | struct ctlr_info *h = shost_to_hba(shost); | |
312 | ||
313 | return snprintf(buf, 20, "%d\n", h->commands_outstanding); | |
314 | } | |
315 | ||
edd16368 SC |
316 | /* Enqueuing and dequeuing functions for cmdlists. */ |
317 | static inline void addQ(struct hlist_head *list, struct CommandList *c) | |
318 | { | |
319 | hlist_add_head(&c->list, list); | |
320 | } | |
321 | ||
303932fd DB |
322 | static inline u32 next_command(struct ctlr_info *h) |
323 | { | |
324 | u32 a; | |
325 | ||
326 | if (unlikely(h->transMethod != CFGTBL_Trans_Performant)) | |
327 | return h->access.command_completed(h); | |
328 | ||
329 | if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) { | |
330 | a = *(h->reply_pool_head); /* Next cmd in ring buffer */ | |
331 | (h->reply_pool_head)++; | |
332 | h->commands_outstanding--; | |
333 | } else { | |
334 | a = FIFO_EMPTY; | |
335 | } | |
336 | /* Check for wraparound */ | |
337 | if (h->reply_pool_head == (h->reply_pool + h->max_commands)) { | |
338 | h->reply_pool_head = h->reply_pool; | |
339 | h->reply_pool_wraparound ^= 1; | |
340 | } | |
341 | return a; | |
342 | } | |
343 | ||
344 | /* set_performant_mode: Modify the tag for cciss performant | |
345 | * set bit 0 for pull model, bits 3-1 for block fetch | |
346 | * register number | |
347 | */ | |
348 | static void set_performant_mode(struct ctlr_info *h, struct CommandList *c) | |
349 | { | |
350 | if (likely(h->transMethod == CFGTBL_Trans_Performant)) | |
351 | c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); | |
352 | } | |
353 | ||
edd16368 SC |
354 | static void enqueue_cmd_and_start_io(struct ctlr_info *h, |
355 | struct CommandList *c) | |
356 | { | |
357 | unsigned long flags; | |
303932fd DB |
358 | |
359 | set_performant_mode(h, c); | |
edd16368 SC |
360 | spin_lock_irqsave(&h->lock, flags); |
361 | addQ(&h->reqQ, c); | |
362 | h->Qdepth++; | |
363 | start_io(h); | |
364 | spin_unlock_irqrestore(&h->lock, flags); | |
365 | } | |
366 | ||
367 | static inline void removeQ(struct CommandList *c) | |
368 | { | |
369 | if (WARN_ON(hlist_unhashed(&c->list))) | |
370 | return; | |
371 | hlist_del_init(&c->list); | |
372 | } | |
373 | ||
374 | static inline int is_hba_lunid(unsigned char scsi3addr[]) | |
375 | { | |
376 | return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0; | |
377 | } | |
378 | ||
379 | static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[]) | |
380 | { | |
381 | return (scsi3addr[3] & 0xC0) == 0x40; | |
382 | } | |
383 | ||
339b2b14 SC |
384 | static inline int is_scsi_rev_5(struct ctlr_info *h) |
385 | { | |
386 | if (!h->hba_inquiry_data) | |
387 | return 0; | |
388 | if ((h->hba_inquiry_data[2] & 0x07) == 5) | |
389 | return 1; | |
390 | return 0; | |
391 | } | |
392 | ||
edd16368 SC |
393 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
394 | "UNKNOWN" | |
395 | }; | |
396 | #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1) | |
397 | ||
398 | static ssize_t raid_level_show(struct device *dev, | |
399 | struct device_attribute *attr, char *buf) | |
400 | { | |
401 | ssize_t l = 0; | |
82a72c0a | 402 | unsigned char rlevel; |
edd16368 SC |
403 | struct ctlr_info *h; |
404 | struct scsi_device *sdev; | |
405 | struct hpsa_scsi_dev_t *hdev; | |
406 | unsigned long flags; | |
407 | ||
408 | sdev = to_scsi_device(dev); | |
409 | h = sdev_to_hba(sdev); | |
410 | spin_lock_irqsave(&h->lock, flags); | |
411 | hdev = sdev->hostdata; | |
412 | if (!hdev) { | |
413 | spin_unlock_irqrestore(&h->lock, flags); | |
414 | return -ENODEV; | |
415 | } | |
416 | ||
417 | /* Is this even a logical drive? */ | |
418 | if (!is_logical_dev_addr_mode(hdev->scsi3addr)) { | |
419 | spin_unlock_irqrestore(&h->lock, flags); | |
420 | l = snprintf(buf, PAGE_SIZE, "N/A\n"); | |
421 | return l; | |
422 | } | |
423 | ||
424 | rlevel = hdev->raid_level; | |
425 | spin_unlock_irqrestore(&h->lock, flags); | |
82a72c0a | 426 | if (rlevel > RAID_UNKNOWN) |
edd16368 SC |
427 | rlevel = RAID_UNKNOWN; |
428 | l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]); | |
429 | return l; | |
430 | } | |
431 | ||
432 | static ssize_t lunid_show(struct device *dev, | |
433 | struct device_attribute *attr, char *buf) | |
434 | { | |
435 | struct ctlr_info *h; | |
436 | struct scsi_device *sdev; | |
437 | struct hpsa_scsi_dev_t *hdev; | |
438 | unsigned long flags; | |
439 | unsigned char lunid[8]; | |
440 | ||
441 | sdev = to_scsi_device(dev); | |
442 | h = sdev_to_hba(sdev); | |
443 | spin_lock_irqsave(&h->lock, flags); | |
444 | hdev = sdev->hostdata; | |
445 | if (!hdev) { | |
446 | spin_unlock_irqrestore(&h->lock, flags); | |
447 | return -ENODEV; | |
448 | } | |
449 | memcpy(lunid, hdev->scsi3addr, sizeof(lunid)); | |
450 | spin_unlock_irqrestore(&h->lock, flags); | |
451 | return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
452 | lunid[0], lunid[1], lunid[2], lunid[3], | |
453 | lunid[4], lunid[5], lunid[6], lunid[7]); | |
454 | } | |
455 | ||
456 | static ssize_t unique_id_show(struct device *dev, | |
457 | struct device_attribute *attr, char *buf) | |
458 | { | |
459 | struct ctlr_info *h; | |
460 | struct scsi_device *sdev; | |
461 | struct hpsa_scsi_dev_t *hdev; | |
462 | unsigned long flags; | |
463 | unsigned char sn[16]; | |
464 | ||
465 | sdev = to_scsi_device(dev); | |
466 | h = sdev_to_hba(sdev); | |
467 | spin_lock_irqsave(&h->lock, flags); | |
468 | hdev = sdev->hostdata; | |
469 | if (!hdev) { | |
470 | spin_unlock_irqrestore(&h->lock, flags); | |
471 | return -ENODEV; | |
472 | } | |
473 | memcpy(sn, hdev->device_id, sizeof(sn)); | |
474 | spin_unlock_irqrestore(&h->lock, flags); | |
475 | return snprintf(buf, 16 * 2 + 2, | |
476 | "%02X%02X%02X%02X%02X%02X%02X%02X" | |
477 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", | |
478 | sn[0], sn[1], sn[2], sn[3], | |
479 | sn[4], sn[5], sn[6], sn[7], | |
480 | sn[8], sn[9], sn[10], sn[11], | |
481 | sn[12], sn[13], sn[14], sn[15]); | |
482 | } | |
483 | ||
484 | static int hpsa_find_target_lun(struct ctlr_info *h, | |
485 | unsigned char scsi3addr[], int bus, int *target, int *lun) | |
486 | { | |
487 | /* finds an unused bus, target, lun for a new physical device | |
488 | * assumes h->devlock is held | |
489 | */ | |
490 | int i, found = 0; | |
491 | DECLARE_BITMAP(lun_taken, HPSA_MAX_SCSI_DEVS_PER_HBA); | |
492 | ||
493 | memset(&lun_taken[0], 0, HPSA_MAX_SCSI_DEVS_PER_HBA >> 3); | |
494 | ||
495 | for (i = 0; i < h->ndevices; i++) { | |
496 | if (h->dev[i]->bus == bus && h->dev[i]->target != -1) | |
497 | set_bit(h->dev[i]->target, lun_taken); | |
498 | } | |
499 | ||
500 | for (i = 0; i < HPSA_MAX_SCSI_DEVS_PER_HBA; i++) { | |
501 | if (!test_bit(i, lun_taken)) { | |
502 | /* *bus = 1; */ | |
503 | *target = i; | |
504 | *lun = 0; | |
505 | found = 1; | |
506 | break; | |
507 | } | |
508 | } | |
509 | return !found; | |
510 | } | |
511 | ||
512 | /* Add an entry into h->dev[] array. */ | |
513 | static int hpsa_scsi_add_entry(struct ctlr_info *h, int hostno, | |
514 | struct hpsa_scsi_dev_t *device, | |
515 | struct hpsa_scsi_dev_t *added[], int *nadded) | |
516 | { | |
517 | /* assumes h->devlock is held */ | |
518 | int n = h->ndevices; | |
519 | int i; | |
520 | unsigned char addr1[8], addr2[8]; | |
521 | struct hpsa_scsi_dev_t *sd; | |
522 | ||
523 | if (n >= HPSA_MAX_SCSI_DEVS_PER_HBA) { | |
524 | dev_err(&h->pdev->dev, "too many devices, some will be " | |
525 | "inaccessible.\n"); | |
526 | return -1; | |
527 | } | |
528 | ||
529 | /* physical devices do not have lun or target assigned until now. */ | |
530 | if (device->lun != -1) | |
531 | /* Logical device, lun is already assigned. */ | |
532 | goto lun_assigned; | |
533 | ||
534 | /* If this device a non-zero lun of a multi-lun device | |
535 | * byte 4 of the 8-byte LUN addr will contain the logical | |
536 | * unit no, zero otherise. | |
537 | */ | |
538 | if (device->scsi3addr[4] == 0) { | |
539 | /* This is not a non-zero lun of a multi-lun device */ | |
540 | if (hpsa_find_target_lun(h, device->scsi3addr, | |
541 | device->bus, &device->target, &device->lun) != 0) | |
542 | return -1; | |
543 | goto lun_assigned; | |
544 | } | |
545 | ||
546 | /* This is a non-zero lun of a multi-lun device. | |
547 | * Search through our list and find the device which | |
548 | * has the same 8 byte LUN address, excepting byte 4. | |
549 | * Assign the same bus and target for this new LUN. | |
550 | * Use the logical unit number from the firmware. | |
551 | */ | |
552 | memcpy(addr1, device->scsi3addr, 8); | |
553 | addr1[4] = 0; | |
554 | for (i = 0; i < n; i++) { | |
555 | sd = h->dev[i]; | |
556 | memcpy(addr2, sd->scsi3addr, 8); | |
557 | addr2[4] = 0; | |
558 | /* differ only in byte 4? */ | |
559 | if (memcmp(addr1, addr2, 8) == 0) { | |
560 | device->bus = sd->bus; | |
561 | device->target = sd->target; | |
562 | device->lun = device->scsi3addr[4]; | |
563 | break; | |
564 | } | |
565 | } | |
566 | if (device->lun == -1) { | |
567 | dev_warn(&h->pdev->dev, "physical device with no LUN=0," | |
568 | " suspect firmware bug or unsupported hardware " | |
569 | "configuration.\n"); | |
570 | return -1; | |
571 | } | |
572 | ||
573 | lun_assigned: | |
574 | ||
575 | h->dev[n] = device; | |
576 | h->ndevices++; | |
577 | added[*nadded] = device; | |
578 | (*nadded)++; | |
579 | ||
580 | /* initially, (before registering with scsi layer) we don't | |
581 | * know our hostno and we don't want to print anything first | |
582 | * time anyway (the scsi layer's inquiries will show that info) | |
583 | */ | |
584 | /* if (hostno != -1) */ | |
585 | dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d added.\n", | |
586 | scsi_device_type(device->devtype), hostno, | |
587 | device->bus, device->target, device->lun); | |
588 | return 0; | |
589 | } | |
590 | ||
2a8ccf31 SC |
591 | /* Replace an entry from h->dev[] array. */ |
592 | static void hpsa_scsi_replace_entry(struct ctlr_info *h, int hostno, | |
593 | int entry, struct hpsa_scsi_dev_t *new_entry, | |
594 | struct hpsa_scsi_dev_t *added[], int *nadded, | |
595 | struct hpsa_scsi_dev_t *removed[], int *nremoved) | |
596 | { | |
597 | /* assumes h->devlock is held */ | |
598 | BUG_ON(entry < 0 || entry >= HPSA_MAX_SCSI_DEVS_PER_HBA); | |
599 | removed[*nremoved] = h->dev[entry]; | |
600 | (*nremoved)++; | |
601 | h->dev[entry] = new_entry; | |
602 | added[*nadded] = new_entry; | |
603 | (*nadded)++; | |
604 | dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d changed.\n", | |
605 | scsi_device_type(new_entry->devtype), hostno, new_entry->bus, | |
606 | new_entry->target, new_entry->lun); | |
607 | } | |
608 | ||
edd16368 SC |
609 | /* Remove an entry from h->dev[] array. */ |
610 | static void hpsa_scsi_remove_entry(struct ctlr_info *h, int hostno, int entry, | |
611 | struct hpsa_scsi_dev_t *removed[], int *nremoved) | |
612 | { | |
613 | /* assumes h->devlock is held */ | |
614 | int i; | |
615 | struct hpsa_scsi_dev_t *sd; | |
616 | ||
b2ed4f79 | 617 | BUG_ON(entry < 0 || entry >= HPSA_MAX_SCSI_DEVS_PER_HBA); |
edd16368 SC |
618 | |
619 | sd = h->dev[entry]; | |
620 | removed[*nremoved] = h->dev[entry]; | |
621 | (*nremoved)++; | |
622 | ||
623 | for (i = entry; i < h->ndevices-1; i++) | |
624 | h->dev[i] = h->dev[i+1]; | |
625 | h->ndevices--; | |
626 | dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d removed.\n", | |
627 | scsi_device_type(sd->devtype), hostno, sd->bus, sd->target, | |
628 | sd->lun); | |
629 | } | |
630 | ||
631 | #define SCSI3ADDR_EQ(a, b) ( \ | |
632 | (a)[7] == (b)[7] && \ | |
633 | (a)[6] == (b)[6] && \ | |
634 | (a)[5] == (b)[5] && \ | |
635 | (a)[4] == (b)[4] && \ | |
636 | (a)[3] == (b)[3] && \ | |
637 | (a)[2] == (b)[2] && \ | |
638 | (a)[1] == (b)[1] && \ | |
639 | (a)[0] == (b)[0]) | |
640 | ||
641 | static void fixup_botched_add(struct ctlr_info *h, | |
642 | struct hpsa_scsi_dev_t *added) | |
643 | { | |
644 | /* called when scsi_add_device fails in order to re-adjust | |
645 | * h->dev[] to match the mid layer's view. | |
646 | */ | |
647 | unsigned long flags; | |
648 | int i, j; | |
649 | ||
650 | spin_lock_irqsave(&h->lock, flags); | |
651 | for (i = 0; i < h->ndevices; i++) { | |
652 | if (h->dev[i] == added) { | |
653 | for (j = i; j < h->ndevices-1; j++) | |
654 | h->dev[j] = h->dev[j+1]; | |
655 | h->ndevices--; | |
656 | break; | |
657 | } | |
658 | } | |
659 | spin_unlock_irqrestore(&h->lock, flags); | |
660 | kfree(added); | |
661 | } | |
662 | ||
663 | static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1, | |
664 | struct hpsa_scsi_dev_t *dev2) | |
665 | { | |
edd16368 SC |
666 | /* we compare everything except lun and target as these |
667 | * are not yet assigned. Compare parts likely | |
668 | * to differ first | |
669 | */ | |
670 | if (memcmp(dev1->scsi3addr, dev2->scsi3addr, | |
671 | sizeof(dev1->scsi3addr)) != 0) | |
672 | return 0; | |
673 | if (memcmp(dev1->device_id, dev2->device_id, | |
674 | sizeof(dev1->device_id)) != 0) | |
675 | return 0; | |
676 | if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0) | |
677 | return 0; | |
678 | if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0) | |
679 | return 0; | |
edd16368 SC |
680 | if (dev1->devtype != dev2->devtype) |
681 | return 0; | |
edd16368 SC |
682 | if (dev1->bus != dev2->bus) |
683 | return 0; | |
684 | return 1; | |
685 | } | |
686 | ||
687 | /* Find needle in haystack. If exact match found, return DEVICE_SAME, | |
688 | * and return needle location in *index. If scsi3addr matches, but not | |
689 | * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle | |
690 | * location in *index. If needle not found, return DEVICE_NOT_FOUND. | |
691 | */ | |
692 | static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle, | |
693 | struct hpsa_scsi_dev_t *haystack[], int haystack_size, | |
694 | int *index) | |
695 | { | |
696 | int i; | |
697 | #define DEVICE_NOT_FOUND 0 | |
698 | #define DEVICE_CHANGED 1 | |
699 | #define DEVICE_SAME 2 | |
700 | for (i = 0; i < haystack_size; i++) { | |
23231048 SC |
701 | if (haystack[i] == NULL) /* previously removed. */ |
702 | continue; | |
edd16368 SC |
703 | if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) { |
704 | *index = i; | |
705 | if (device_is_the_same(needle, haystack[i])) | |
706 | return DEVICE_SAME; | |
707 | else | |
708 | return DEVICE_CHANGED; | |
709 | } | |
710 | } | |
711 | *index = -1; | |
712 | return DEVICE_NOT_FOUND; | |
713 | } | |
714 | ||
4967bd3e | 715 | static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno, |
edd16368 SC |
716 | struct hpsa_scsi_dev_t *sd[], int nsds) |
717 | { | |
718 | /* sd contains scsi3 addresses and devtypes, and inquiry | |
719 | * data. This function takes what's in sd to be the current | |
720 | * reality and updates h->dev[] to reflect that reality. | |
721 | */ | |
722 | int i, entry, device_change, changes = 0; | |
723 | struct hpsa_scsi_dev_t *csd; | |
724 | unsigned long flags; | |
725 | struct hpsa_scsi_dev_t **added, **removed; | |
726 | int nadded, nremoved; | |
727 | struct Scsi_Host *sh = NULL; | |
728 | ||
729 | added = kzalloc(sizeof(*added) * HPSA_MAX_SCSI_DEVS_PER_HBA, | |
730 | GFP_KERNEL); | |
731 | removed = kzalloc(sizeof(*removed) * HPSA_MAX_SCSI_DEVS_PER_HBA, | |
732 | GFP_KERNEL); | |
733 | ||
734 | if (!added || !removed) { | |
735 | dev_warn(&h->pdev->dev, "out of memory in " | |
736 | "adjust_hpsa_scsi_table\n"); | |
737 | goto free_and_out; | |
738 | } | |
739 | ||
740 | spin_lock_irqsave(&h->devlock, flags); | |
741 | ||
742 | /* find any devices in h->dev[] that are not in | |
743 | * sd[] and remove them from h->dev[], and for any | |
744 | * devices which have changed, remove the old device | |
745 | * info and add the new device info. | |
746 | */ | |
747 | i = 0; | |
748 | nremoved = 0; | |
749 | nadded = 0; | |
750 | while (i < h->ndevices) { | |
751 | csd = h->dev[i]; | |
752 | device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry); | |
753 | if (device_change == DEVICE_NOT_FOUND) { | |
754 | changes++; | |
755 | hpsa_scsi_remove_entry(h, hostno, i, | |
756 | removed, &nremoved); | |
757 | continue; /* remove ^^^, hence i not incremented */ | |
758 | } else if (device_change == DEVICE_CHANGED) { | |
759 | changes++; | |
2a8ccf31 SC |
760 | hpsa_scsi_replace_entry(h, hostno, i, sd[entry], |
761 | added, &nadded, removed, &nremoved); | |
c7f172dc SC |
762 | /* Set it to NULL to prevent it from being freed |
763 | * at the bottom of hpsa_update_scsi_devices() | |
764 | */ | |
765 | sd[entry] = NULL; | |
edd16368 SC |
766 | } |
767 | i++; | |
768 | } | |
769 | ||
770 | /* Now, make sure every device listed in sd[] is also | |
771 | * listed in h->dev[], adding them if they aren't found | |
772 | */ | |
773 | ||
774 | for (i = 0; i < nsds; i++) { | |
775 | if (!sd[i]) /* if already added above. */ | |
776 | continue; | |
777 | device_change = hpsa_scsi_find_entry(sd[i], h->dev, | |
778 | h->ndevices, &entry); | |
779 | if (device_change == DEVICE_NOT_FOUND) { | |
780 | changes++; | |
781 | if (hpsa_scsi_add_entry(h, hostno, sd[i], | |
782 | added, &nadded) != 0) | |
783 | break; | |
784 | sd[i] = NULL; /* prevent from being freed later. */ | |
785 | } else if (device_change == DEVICE_CHANGED) { | |
786 | /* should never happen... */ | |
787 | changes++; | |
788 | dev_warn(&h->pdev->dev, | |
789 | "device unexpectedly changed.\n"); | |
790 | /* but if it does happen, we just ignore that device */ | |
791 | } | |
792 | } | |
793 | spin_unlock_irqrestore(&h->devlock, flags); | |
794 | ||
795 | /* Don't notify scsi mid layer of any changes the first time through | |
796 | * (or if there are no changes) scsi_scan_host will do it later the | |
797 | * first time through. | |
798 | */ | |
799 | if (hostno == -1 || !changes) | |
800 | goto free_and_out; | |
801 | ||
802 | sh = h->scsi_host; | |
803 | /* Notify scsi mid layer of any removed devices */ | |
804 | for (i = 0; i < nremoved; i++) { | |
805 | struct scsi_device *sdev = | |
806 | scsi_device_lookup(sh, removed[i]->bus, | |
807 | removed[i]->target, removed[i]->lun); | |
808 | if (sdev != NULL) { | |
809 | scsi_remove_device(sdev); | |
810 | scsi_device_put(sdev); | |
811 | } else { | |
812 | /* We don't expect to get here. | |
813 | * future cmds to this device will get selection | |
814 | * timeout as if the device was gone. | |
815 | */ | |
816 | dev_warn(&h->pdev->dev, "didn't find c%db%dt%dl%d " | |
817 | " for removal.", hostno, removed[i]->bus, | |
818 | removed[i]->target, removed[i]->lun); | |
819 | } | |
820 | kfree(removed[i]); | |
821 | removed[i] = NULL; | |
822 | } | |
823 | ||
824 | /* Notify scsi mid layer of any added devices */ | |
825 | for (i = 0; i < nadded; i++) { | |
826 | if (scsi_add_device(sh, added[i]->bus, | |
827 | added[i]->target, added[i]->lun) == 0) | |
828 | continue; | |
829 | dev_warn(&h->pdev->dev, "scsi_add_device c%db%dt%dl%d failed, " | |
830 | "device not added.\n", hostno, added[i]->bus, | |
831 | added[i]->target, added[i]->lun); | |
832 | /* now we have to remove it from h->dev, | |
833 | * since it didn't get added to scsi mid layer | |
834 | */ | |
835 | fixup_botched_add(h, added[i]); | |
836 | } | |
837 | ||
838 | free_and_out: | |
839 | kfree(added); | |
840 | kfree(removed); | |
edd16368 SC |
841 | } |
842 | ||
843 | /* | |
844 | * Lookup bus/target/lun and retrun corresponding struct hpsa_scsi_dev_t * | |
845 | * Assume's h->devlock is held. | |
846 | */ | |
847 | static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h, | |
848 | int bus, int target, int lun) | |
849 | { | |
850 | int i; | |
851 | struct hpsa_scsi_dev_t *sd; | |
852 | ||
853 | for (i = 0; i < h->ndevices; i++) { | |
854 | sd = h->dev[i]; | |
855 | if (sd->bus == bus && sd->target == target && sd->lun == lun) | |
856 | return sd; | |
857 | } | |
858 | return NULL; | |
859 | } | |
860 | ||
861 | /* link sdev->hostdata to our per-device structure. */ | |
862 | static int hpsa_slave_alloc(struct scsi_device *sdev) | |
863 | { | |
864 | struct hpsa_scsi_dev_t *sd; | |
865 | unsigned long flags; | |
866 | struct ctlr_info *h; | |
867 | ||
868 | h = sdev_to_hba(sdev); | |
869 | spin_lock_irqsave(&h->devlock, flags); | |
870 | sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev), | |
871 | sdev_id(sdev), sdev->lun); | |
872 | if (sd != NULL) | |
873 | sdev->hostdata = sd; | |
874 | spin_unlock_irqrestore(&h->devlock, flags); | |
875 | return 0; | |
876 | } | |
877 | ||
878 | static void hpsa_slave_destroy(struct scsi_device *sdev) | |
879 | { | |
bcc44255 | 880 | /* nothing to do. */ |
edd16368 SC |
881 | } |
882 | ||
883 | static void hpsa_scsi_setup(struct ctlr_info *h) | |
884 | { | |
885 | h->ndevices = 0; | |
886 | h->scsi_host = NULL; | |
887 | spin_lock_init(&h->devlock); | |
edd16368 SC |
888 | } |
889 | ||
33a2ffce SC |
890 | static void hpsa_free_sg_chain_blocks(struct ctlr_info *h) |
891 | { | |
892 | int i; | |
893 | ||
894 | if (!h->cmd_sg_list) | |
895 | return; | |
896 | for (i = 0; i < h->nr_cmds; i++) { | |
897 | kfree(h->cmd_sg_list[i]); | |
898 | h->cmd_sg_list[i] = NULL; | |
899 | } | |
900 | kfree(h->cmd_sg_list); | |
901 | h->cmd_sg_list = NULL; | |
902 | } | |
903 | ||
904 | static int hpsa_allocate_sg_chain_blocks(struct ctlr_info *h) | |
905 | { | |
906 | int i; | |
907 | ||
908 | if (h->chainsize <= 0) | |
909 | return 0; | |
910 | ||
911 | h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds, | |
912 | GFP_KERNEL); | |
913 | if (!h->cmd_sg_list) | |
914 | return -ENOMEM; | |
915 | for (i = 0; i < h->nr_cmds; i++) { | |
916 | h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) * | |
917 | h->chainsize, GFP_KERNEL); | |
918 | if (!h->cmd_sg_list[i]) | |
919 | goto clean; | |
920 | } | |
921 | return 0; | |
922 | ||
923 | clean: | |
924 | hpsa_free_sg_chain_blocks(h); | |
925 | return -ENOMEM; | |
926 | } | |
927 | ||
928 | static void hpsa_map_sg_chain_block(struct ctlr_info *h, | |
929 | struct CommandList *c) | |
930 | { | |
931 | struct SGDescriptor *chain_sg, *chain_block; | |
932 | u64 temp64; | |
933 | ||
934 | chain_sg = &c->SG[h->max_cmd_sg_entries - 1]; | |
935 | chain_block = h->cmd_sg_list[c->cmdindex]; | |
936 | chain_sg->Ext = HPSA_SG_CHAIN; | |
937 | chain_sg->Len = sizeof(*chain_sg) * | |
938 | (c->Header.SGTotal - h->max_cmd_sg_entries); | |
939 | temp64 = pci_map_single(h->pdev, chain_block, chain_sg->Len, | |
940 | PCI_DMA_TODEVICE); | |
941 | chain_sg->Addr.lower = (u32) (temp64 & 0x0FFFFFFFFULL); | |
942 | chain_sg->Addr.upper = (u32) ((temp64 >> 32) & 0x0FFFFFFFFULL); | |
943 | } | |
944 | ||
945 | static void hpsa_unmap_sg_chain_block(struct ctlr_info *h, | |
946 | struct CommandList *c) | |
947 | { | |
948 | struct SGDescriptor *chain_sg; | |
949 | union u64bit temp64; | |
950 | ||
951 | if (c->Header.SGTotal <= h->max_cmd_sg_entries) | |
952 | return; | |
953 | ||
954 | chain_sg = &c->SG[h->max_cmd_sg_entries - 1]; | |
955 | temp64.val32.lower = chain_sg->Addr.lower; | |
956 | temp64.val32.upper = chain_sg->Addr.upper; | |
957 | pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE); | |
958 | } | |
959 | ||
edd16368 | 960 | static void complete_scsi_command(struct CommandList *cp, |
01a02ffc | 961 | int timeout, u32 tag) |
edd16368 SC |
962 | { |
963 | struct scsi_cmnd *cmd; | |
964 | struct ctlr_info *h; | |
965 | struct ErrorInfo *ei; | |
966 | ||
967 | unsigned char sense_key; | |
968 | unsigned char asc; /* additional sense code */ | |
969 | unsigned char ascq; /* additional sense code qualifier */ | |
970 | ||
971 | ei = cp->err_info; | |
972 | cmd = (struct scsi_cmnd *) cp->scsi_cmd; | |
973 | h = cp->h; | |
974 | ||
975 | scsi_dma_unmap(cmd); /* undo the DMA mappings */ | |
33a2ffce SC |
976 | if (cp->Header.SGTotal > h->max_cmd_sg_entries) |
977 | hpsa_unmap_sg_chain_block(h, cp); | |
edd16368 SC |
978 | |
979 | cmd->result = (DID_OK << 16); /* host byte */ | |
980 | cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ | |
5512672f | 981 | cmd->result |= ei->ScsiStatus; |
edd16368 SC |
982 | |
983 | /* copy the sense data whether we need to or not. */ | |
984 | memcpy(cmd->sense_buffer, ei->SenseInfo, | |
985 | ei->SenseLen > SCSI_SENSE_BUFFERSIZE ? | |
986 | SCSI_SENSE_BUFFERSIZE : | |
987 | ei->SenseLen); | |
988 | scsi_set_resid(cmd, ei->ResidualCnt); | |
989 | ||
990 | if (ei->CommandStatus == 0) { | |
991 | cmd->scsi_done(cmd); | |
992 | cmd_free(h, cp); | |
993 | return; | |
994 | } | |
995 | ||
996 | /* an error has occurred */ | |
997 | switch (ei->CommandStatus) { | |
998 | ||
999 | case CMD_TARGET_STATUS: | |
1000 | if (ei->ScsiStatus) { | |
1001 | /* Get sense key */ | |
1002 | sense_key = 0xf & ei->SenseInfo[2]; | |
1003 | /* Get additional sense code */ | |
1004 | asc = ei->SenseInfo[12]; | |
1005 | /* Get addition sense code qualifier */ | |
1006 | ascq = ei->SenseInfo[13]; | |
1007 | } | |
1008 | ||
1009 | if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) { | |
1010 | if (check_for_unit_attention(h, cp)) { | |
1011 | cmd->result = DID_SOFT_ERROR << 16; | |
1012 | break; | |
1013 | } | |
1014 | if (sense_key == ILLEGAL_REQUEST) { | |
1015 | /* | |
1016 | * SCSI REPORT_LUNS is commonly unsupported on | |
1017 | * Smart Array. Suppress noisy complaint. | |
1018 | */ | |
1019 | if (cp->Request.CDB[0] == REPORT_LUNS) | |
1020 | break; | |
1021 | ||
1022 | /* If ASC/ASCQ indicate Logical Unit | |
1023 | * Not Supported condition, | |
1024 | */ | |
1025 | if ((asc == 0x25) && (ascq == 0x0)) { | |
1026 | dev_warn(&h->pdev->dev, "cp %p " | |
1027 | "has check condition\n", cp); | |
1028 | break; | |
1029 | } | |
1030 | } | |
1031 | ||
1032 | if (sense_key == NOT_READY) { | |
1033 | /* If Sense is Not Ready, Logical Unit | |
1034 | * Not ready, Manual Intervention | |
1035 | * required | |
1036 | */ | |
1037 | if ((asc == 0x04) && (ascq == 0x03)) { | |
edd16368 SC |
1038 | dev_warn(&h->pdev->dev, "cp %p " |
1039 | "has check condition: unit " | |
1040 | "not ready, manual " | |
1041 | "intervention required\n", cp); | |
1042 | break; | |
1043 | } | |
1044 | } | |
1d3b3609 MG |
1045 | if (sense_key == ABORTED_COMMAND) { |
1046 | /* Aborted command is retryable */ | |
1047 | dev_warn(&h->pdev->dev, "cp %p " | |
1048 | "has check condition: aborted command: " | |
1049 | "ASC: 0x%x, ASCQ: 0x%x\n", | |
1050 | cp, asc, ascq); | |
1051 | cmd->result = DID_SOFT_ERROR << 16; | |
1052 | break; | |
1053 | } | |
edd16368 SC |
1054 | /* Must be some other type of check condition */ |
1055 | dev_warn(&h->pdev->dev, "cp %p has check condition: " | |
1056 | "unknown type: " | |
1057 | "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, " | |
1058 | "Returning result: 0x%x, " | |
1059 | "cmd=[%02x %02x %02x %02x %02x " | |
807be732 | 1060 | "%02x %02x %02x %02x %02x %02x " |
edd16368 SC |
1061 | "%02x %02x %02x %02x %02x]\n", |
1062 | cp, sense_key, asc, ascq, | |
1063 | cmd->result, | |
1064 | cmd->cmnd[0], cmd->cmnd[1], | |
1065 | cmd->cmnd[2], cmd->cmnd[3], | |
1066 | cmd->cmnd[4], cmd->cmnd[5], | |
1067 | cmd->cmnd[6], cmd->cmnd[7], | |
807be732 MM |
1068 | cmd->cmnd[8], cmd->cmnd[9], |
1069 | cmd->cmnd[10], cmd->cmnd[11], | |
1070 | cmd->cmnd[12], cmd->cmnd[13], | |
1071 | cmd->cmnd[14], cmd->cmnd[15]); | |
edd16368 SC |
1072 | break; |
1073 | } | |
1074 | ||
1075 | ||
1076 | /* Problem was not a check condition | |
1077 | * Pass it up to the upper layers... | |
1078 | */ | |
1079 | if (ei->ScsiStatus) { | |
1080 | dev_warn(&h->pdev->dev, "cp %p has status 0x%x " | |
1081 | "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, " | |
1082 | "Returning result: 0x%x\n", | |
1083 | cp, ei->ScsiStatus, | |
1084 | sense_key, asc, ascq, | |
1085 | cmd->result); | |
1086 | } else { /* scsi status is zero??? How??? */ | |
1087 | dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. " | |
1088 | "Returning no connection.\n", cp), | |
1089 | ||
1090 | /* Ordinarily, this case should never happen, | |
1091 | * but there is a bug in some released firmware | |
1092 | * revisions that allows it to happen if, for | |
1093 | * example, a 4100 backplane loses power and | |
1094 | * the tape drive is in it. We assume that | |
1095 | * it's a fatal error of some kind because we | |
1096 | * can't show that it wasn't. We will make it | |
1097 | * look like selection timeout since that is | |
1098 | * the most common reason for this to occur, | |
1099 | * and it's severe enough. | |
1100 | */ | |
1101 | ||
1102 | cmd->result = DID_NO_CONNECT << 16; | |
1103 | } | |
1104 | break; | |
1105 | ||
1106 | case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ | |
1107 | break; | |
1108 | case CMD_DATA_OVERRUN: | |
1109 | dev_warn(&h->pdev->dev, "cp %p has" | |
1110 | " completed with data overrun " | |
1111 | "reported\n", cp); | |
1112 | break; | |
1113 | case CMD_INVALID: { | |
1114 | /* print_bytes(cp, sizeof(*cp), 1, 0); | |
1115 | print_cmd(cp); */ | |
1116 | /* We get CMD_INVALID if you address a non-existent device | |
1117 | * instead of a selection timeout (no response). You will | |
1118 | * see this if you yank out a drive, then try to access it. | |
1119 | * This is kind of a shame because it means that any other | |
1120 | * CMD_INVALID (e.g. driver bug) will get interpreted as a | |
1121 | * missing target. */ | |
1122 | cmd->result = DID_NO_CONNECT << 16; | |
1123 | } | |
1124 | break; | |
1125 | case CMD_PROTOCOL_ERR: | |
1126 | dev_warn(&h->pdev->dev, "cp %p has " | |
1127 | "protocol error \n", cp); | |
1128 | break; | |
1129 | case CMD_HARDWARE_ERR: | |
1130 | cmd->result = DID_ERROR << 16; | |
1131 | dev_warn(&h->pdev->dev, "cp %p had hardware error\n", cp); | |
1132 | break; | |
1133 | case CMD_CONNECTION_LOST: | |
1134 | cmd->result = DID_ERROR << 16; | |
1135 | dev_warn(&h->pdev->dev, "cp %p had connection lost\n", cp); | |
1136 | break; | |
1137 | case CMD_ABORTED: | |
1138 | cmd->result = DID_ABORT << 16; | |
1139 | dev_warn(&h->pdev->dev, "cp %p was aborted with status 0x%x\n", | |
1140 | cp, ei->ScsiStatus); | |
1141 | break; | |
1142 | case CMD_ABORT_FAILED: | |
1143 | cmd->result = DID_ERROR << 16; | |
1144 | dev_warn(&h->pdev->dev, "cp %p reports abort failed\n", cp); | |
1145 | break; | |
1146 | case CMD_UNSOLICITED_ABORT: | |
5f0325ab | 1147 | cmd->result = DID_RESET << 16; |
edd16368 SC |
1148 | dev_warn(&h->pdev->dev, "cp %p aborted do to an unsolicited " |
1149 | "abort\n", cp); | |
1150 | break; | |
1151 | case CMD_TIMEOUT: | |
1152 | cmd->result = DID_TIME_OUT << 16; | |
1153 | dev_warn(&h->pdev->dev, "cp %p timedout\n", cp); | |
1154 | break; | |
1d5e2ed0 SC |
1155 | case CMD_UNABORTABLE: |
1156 | cmd->result = DID_ERROR << 16; | |
1157 | dev_warn(&h->pdev->dev, "Command unabortable\n"); | |
1158 | break; | |
edd16368 SC |
1159 | default: |
1160 | cmd->result = DID_ERROR << 16; | |
1161 | dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n", | |
1162 | cp, ei->CommandStatus); | |
1163 | } | |
1164 | cmd->scsi_done(cmd); | |
1165 | cmd_free(h, cp); | |
1166 | } | |
1167 | ||
1168 | static int hpsa_scsi_detect(struct ctlr_info *h) | |
1169 | { | |
1170 | struct Scsi_Host *sh; | |
1171 | int error; | |
1172 | ||
1173 | sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h)); | |
1174 | if (sh == NULL) | |
1175 | goto fail; | |
1176 | ||
1177 | sh->io_port = 0; | |
1178 | sh->n_io_port = 0; | |
1179 | sh->this_id = -1; | |
1180 | sh->max_channel = 3; | |
1181 | sh->max_cmd_len = MAX_COMMAND_SIZE; | |
1182 | sh->max_lun = HPSA_MAX_LUN; | |
1183 | sh->max_id = HPSA_MAX_LUN; | |
303932fd DB |
1184 | sh->can_queue = h->nr_cmds; |
1185 | sh->cmd_per_lun = h->nr_cmds; | |
33a2ffce | 1186 | sh->sg_tablesize = h->maxsgentries; |
edd16368 SC |
1187 | h->scsi_host = sh; |
1188 | sh->hostdata[0] = (unsigned long) h; | |
303932fd | 1189 | sh->irq = h->intr[PERF_MODE_INT]; |
edd16368 SC |
1190 | sh->unique_id = sh->irq; |
1191 | error = scsi_add_host(sh, &h->pdev->dev); | |
1192 | if (error) | |
1193 | goto fail_host_put; | |
1194 | scsi_scan_host(sh); | |
1195 | return 0; | |
1196 | ||
1197 | fail_host_put: | |
1198 | dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_add_host" | |
1199 | " failed for controller %d\n", h->ctlr); | |
1200 | scsi_host_put(sh); | |
ecd9aad4 | 1201 | return error; |
edd16368 SC |
1202 | fail: |
1203 | dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_host_alloc" | |
1204 | " failed for controller %d\n", h->ctlr); | |
ecd9aad4 | 1205 | return -ENOMEM; |
edd16368 SC |
1206 | } |
1207 | ||
1208 | static void hpsa_pci_unmap(struct pci_dev *pdev, | |
1209 | struct CommandList *c, int sg_used, int data_direction) | |
1210 | { | |
1211 | int i; | |
1212 | union u64bit addr64; | |
1213 | ||
1214 | for (i = 0; i < sg_used; i++) { | |
1215 | addr64.val32.lower = c->SG[i].Addr.lower; | |
1216 | addr64.val32.upper = c->SG[i].Addr.upper; | |
1217 | pci_unmap_single(pdev, (dma_addr_t) addr64.val, c->SG[i].Len, | |
1218 | data_direction); | |
1219 | } | |
1220 | } | |
1221 | ||
1222 | static void hpsa_map_one(struct pci_dev *pdev, | |
1223 | struct CommandList *cp, | |
1224 | unsigned char *buf, | |
1225 | size_t buflen, | |
1226 | int data_direction) | |
1227 | { | |
01a02ffc | 1228 | u64 addr64; |
edd16368 SC |
1229 | |
1230 | if (buflen == 0 || data_direction == PCI_DMA_NONE) { | |
1231 | cp->Header.SGList = 0; | |
1232 | cp->Header.SGTotal = 0; | |
1233 | return; | |
1234 | } | |
1235 | ||
01a02ffc | 1236 | addr64 = (u64) pci_map_single(pdev, buf, buflen, data_direction); |
edd16368 | 1237 | cp->SG[0].Addr.lower = |
01a02ffc | 1238 | (u32) (addr64 & (u64) 0x00000000FFFFFFFF); |
edd16368 | 1239 | cp->SG[0].Addr.upper = |
01a02ffc | 1240 | (u32) ((addr64 >> 32) & (u64) 0x00000000FFFFFFFF); |
edd16368 | 1241 | cp->SG[0].Len = buflen; |
01a02ffc SC |
1242 | cp->Header.SGList = (u8) 1; /* no. SGs contig in this cmd */ |
1243 | cp->Header.SGTotal = (u16) 1; /* total sgs in this cmd list */ | |
edd16368 SC |
1244 | } |
1245 | ||
1246 | static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h, | |
1247 | struct CommandList *c) | |
1248 | { | |
1249 | DECLARE_COMPLETION_ONSTACK(wait); | |
1250 | ||
1251 | c->waiting = &wait; | |
1252 | enqueue_cmd_and_start_io(h, c); | |
1253 | wait_for_completion(&wait); | |
1254 | } | |
1255 | ||
1256 | static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h, | |
1257 | struct CommandList *c, int data_direction) | |
1258 | { | |
1259 | int retry_count = 0; | |
1260 | ||
1261 | do { | |
1262 | memset(c->err_info, 0, sizeof(c->err_info)); | |
1263 | hpsa_scsi_do_simple_cmd_core(h, c); | |
1264 | retry_count++; | |
1265 | } while (check_for_unit_attention(h, c) && retry_count <= 3); | |
1266 | hpsa_pci_unmap(h->pdev, c, 1, data_direction); | |
1267 | } | |
1268 | ||
1269 | static void hpsa_scsi_interpret_error(struct CommandList *cp) | |
1270 | { | |
1271 | struct ErrorInfo *ei; | |
1272 | struct device *d = &cp->h->pdev->dev; | |
1273 | ||
1274 | ei = cp->err_info; | |
1275 | switch (ei->CommandStatus) { | |
1276 | case CMD_TARGET_STATUS: | |
1277 | dev_warn(d, "cmd %p has completed with errors\n", cp); | |
1278 | dev_warn(d, "cmd %p has SCSI Status = %x\n", cp, | |
1279 | ei->ScsiStatus); | |
1280 | if (ei->ScsiStatus == 0) | |
1281 | dev_warn(d, "SCSI status is abnormally zero. " | |
1282 | "(probably indicates selection timeout " | |
1283 | "reported incorrectly due to a known " | |
1284 | "firmware bug, circa July, 2001.)\n"); | |
1285 | break; | |
1286 | case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ | |
1287 | dev_info(d, "UNDERRUN\n"); | |
1288 | break; | |
1289 | case CMD_DATA_OVERRUN: | |
1290 | dev_warn(d, "cp %p has completed with data overrun\n", cp); | |
1291 | break; | |
1292 | case CMD_INVALID: { | |
1293 | /* controller unfortunately reports SCSI passthru's | |
1294 | * to non-existent targets as invalid commands. | |
1295 | */ | |
1296 | dev_warn(d, "cp %p is reported invalid (probably means " | |
1297 | "target device no longer present)\n", cp); | |
1298 | /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0); | |
1299 | print_cmd(cp); */ | |
1300 | } | |
1301 | break; | |
1302 | case CMD_PROTOCOL_ERR: | |
1303 | dev_warn(d, "cp %p has protocol error \n", cp); | |
1304 | break; | |
1305 | case CMD_HARDWARE_ERR: | |
1306 | /* cmd->result = DID_ERROR << 16; */ | |
1307 | dev_warn(d, "cp %p had hardware error\n", cp); | |
1308 | break; | |
1309 | case CMD_CONNECTION_LOST: | |
1310 | dev_warn(d, "cp %p had connection lost\n", cp); | |
1311 | break; | |
1312 | case CMD_ABORTED: | |
1313 | dev_warn(d, "cp %p was aborted\n", cp); | |
1314 | break; | |
1315 | case CMD_ABORT_FAILED: | |
1316 | dev_warn(d, "cp %p reports abort failed\n", cp); | |
1317 | break; | |
1318 | case CMD_UNSOLICITED_ABORT: | |
1319 | dev_warn(d, "cp %p aborted due to an unsolicited abort\n", cp); | |
1320 | break; | |
1321 | case CMD_TIMEOUT: | |
1322 | dev_warn(d, "cp %p timed out\n", cp); | |
1323 | break; | |
1d5e2ed0 SC |
1324 | case CMD_UNABORTABLE: |
1325 | dev_warn(d, "Command unabortable\n"); | |
1326 | break; | |
edd16368 SC |
1327 | default: |
1328 | dev_warn(d, "cp %p returned unknown status %x\n", cp, | |
1329 | ei->CommandStatus); | |
1330 | } | |
1331 | } | |
1332 | ||
1333 | static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr, | |
1334 | unsigned char page, unsigned char *buf, | |
1335 | unsigned char bufsize) | |
1336 | { | |
1337 | int rc = IO_OK; | |
1338 | struct CommandList *c; | |
1339 | struct ErrorInfo *ei; | |
1340 | ||
1341 | c = cmd_special_alloc(h); | |
1342 | ||
1343 | if (c == NULL) { /* trouble... */ | |
1344 | dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); | |
ecd9aad4 | 1345 | return -ENOMEM; |
edd16368 SC |
1346 | } |
1347 | ||
1348 | fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, page, scsi3addr, TYPE_CMD); | |
1349 | hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); | |
1350 | ei = c->err_info; | |
1351 | if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { | |
1352 | hpsa_scsi_interpret_error(c); | |
1353 | rc = -1; | |
1354 | } | |
1355 | cmd_special_free(h, c); | |
1356 | return rc; | |
1357 | } | |
1358 | ||
1359 | static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr) | |
1360 | { | |
1361 | int rc = IO_OK; | |
1362 | struct CommandList *c; | |
1363 | struct ErrorInfo *ei; | |
1364 | ||
1365 | c = cmd_special_alloc(h); | |
1366 | ||
1367 | if (c == NULL) { /* trouble... */ | |
1368 | dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); | |
e9ea04a6 | 1369 | return -ENOMEM; |
edd16368 SC |
1370 | } |
1371 | ||
1372 | fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, scsi3addr, TYPE_MSG); | |
1373 | hpsa_scsi_do_simple_cmd_core(h, c); | |
1374 | /* no unmap needed here because no data xfer. */ | |
1375 | ||
1376 | ei = c->err_info; | |
1377 | if (ei->CommandStatus != 0) { | |
1378 | hpsa_scsi_interpret_error(c); | |
1379 | rc = -1; | |
1380 | } | |
1381 | cmd_special_free(h, c); | |
1382 | return rc; | |
1383 | } | |
1384 | ||
1385 | static void hpsa_get_raid_level(struct ctlr_info *h, | |
1386 | unsigned char *scsi3addr, unsigned char *raid_level) | |
1387 | { | |
1388 | int rc; | |
1389 | unsigned char *buf; | |
1390 | ||
1391 | *raid_level = RAID_UNKNOWN; | |
1392 | buf = kzalloc(64, GFP_KERNEL); | |
1393 | if (!buf) | |
1394 | return; | |
1395 | rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0xC1, buf, 64); | |
1396 | if (rc == 0) | |
1397 | *raid_level = buf[8]; | |
1398 | if (*raid_level > RAID_UNKNOWN) | |
1399 | *raid_level = RAID_UNKNOWN; | |
1400 | kfree(buf); | |
1401 | return; | |
1402 | } | |
1403 | ||
1404 | /* Get the device id from inquiry page 0x83 */ | |
1405 | static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr, | |
1406 | unsigned char *device_id, int buflen) | |
1407 | { | |
1408 | int rc; | |
1409 | unsigned char *buf; | |
1410 | ||
1411 | if (buflen > 16) | |
1412 | buflen = 16; | |
1413 | buf = kzalloc(64, GFP_KERNEL); | |
1414 | if (!buf) | |
1415 | return -1; | |
1416 | rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0x83, buf, 64); | |
1417 | if (rc == 0) | |
1418 | memcpy(device_id, &buf[8], buflen); | |
1419 | kfree(buf); | |
1420 | return rc != 0; | |
1421 | } | |
1422 | ||
1423 | static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical, | |
1424 | struct ReportLUNdata *buf, int bufsize, | |
1425 | int extended_response) | |
1426 | { | |
1427 | int rc = IO_OK; | |
1428 | struct CommandList *c; | |
1429 | unsigned char scsi3addr[8]; | |
1430 | struct ErrorInfo *ei; | |
1431 | ||
1432 | c = cmd_special_alloc(h); | |
1433 | if (c == NULL) { /* trouble... */ | |
1434 | dev_err(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); | |
1435 | return -1; | |
1436 | } | |
e89c0ae7 SC |
1437 | /* address the controller */ |
1438 | memset(scsi3addr, 0, sizeof(scsi3addr)); | |
edd16368 SC |
1439 | fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h, |
1440 | buf, bufsize, 0, scsi3addr, TYPE_CMD); | |
1441 | if (extended_response) | |
1442 | c->Request.CDB[1] = extended_response; | |
1443 | hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); | |
1444 | ei = c->err_info; | |
1445 | if (ei->CommandStatus != 0 && | |
1446 | ei->CommandStatus != CMD_DATA_UNDERRUN) { | |
1447 | hpsa_scsi_interpret_error(c); | |
1448 | rc = -1; | |
1449 | } | |
1450 | cmd_special_free(h, c); | |
1451 | return rc; | |
1452 | } | |
1453 | ||
1454 | static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h, | |
1455 | struct ReportLUNdata *buf, | |
1456 | int bufsize, int extended_response) | |
1457 | { | |
1458 | return hpsa_scsi_do_report_luns(h, 0, buf, bufsize, extended_response); | |
1459 | } | |
1460 | ||
1461 | static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h, | |
1462 | struct ReportLUNdata *buf, int bufsize) | |
1463 | { | |
1464 | return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0); | |
1465 | } | |
1466 | ||
1467 | static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device, | |
1468 | int bus, int target, int lun) | |
1469 | { | |
1470 | device->bus = bus; | |
1471 | device->target = target; | |
1472 | device->lun = lun; | |
1473 | } | |
1474 | ||
1475 | static int hpsa_update_device_info(struct ctlr_info *h, | |
1476 | unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device) | |
1477 | { | |
1478 | #define OBDR_TAPE_INQ_SIZE 49 | |
ea6d3bc3 | 1479 | unsigned char *inq_buff; |
edd16368 | 1480 | |
ea6d3bc3 | 1481 | inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); |
edd16368 SC |
1482 | if (!inq_buff) |
1483 | goto bail_out; | |
1484 | ||
edd16368 SC |
1485 | /* Do an inquiry to the device to see what it is. */ |
1486 | if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff, | |
1487 | (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) { | |
1488 | /* Inquiry failed (msg printed already) */ | |
1489 | dev_err(&h->pdev->dev, | |
1490 | "hpsa_update_device_info: inquiry failed\n"); | |
1491 | goto bail_out; | |
1492 | } | |
1493 | ||
edd16368 SC |
1494 | this_device->devtype = (inq_buff[0] & 0x1f); |
1495 | memcpy(this_device->scsi3addr, scsi3addr, 8); | |
1496 | memcpy(this_device->vendor, &inq_buff[8], | |
1497 | sizeof(this_device->vendor)); | |
1498 | memcpy(this_device->model, &inq_buff[16], | |
1499 | sizeof(this_device->model)); | |
edd16368 SC |
1500 | memset(this_device->device_id, 0, |
1501 | sizeof(this_device->device_id)); | |
1502 | hpsa_get_device_id(h, scsi3addr, this_device->device_id, | |
1503 | sizeof(this_device->device_id)); | |
1504 | ||
1505 | if (this_device->devtype == TYPE_DISK && | |
1506 | is_logical_dev_addr_mode(scsi3addr)) | |
1507 | hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level); | |
1508 | else | |
1509 | this_device->raid_level = RAID_UNKNOWN; | |
1510 | ||
1511 | kfree(inq_buff); | |
1512 | return 0; | |
1513 | ||
1514 | bail_out: | |
1515 | kfree(inq_buff); | |
1516 | return 1; | |
1517 | } | |
1518 | ||
1519 | static unsigned char *msa2xxx_model[] = { | |
1520 | "MSA2012", | |
1521 | "MSA2024", | |
1522 | "MSA2312", | |
1523 | "MSA2324", | |
1524 | NULL, | |
1525 | }; | |
1526 | ||
1527 | static int is_msa2xxx(struct ctlr_info *h, struct hpsa_scsi_dev_t *device) | |
1528 | { | |
1529 | int i; | |
1530 | ||
1531 | for (i = 0; msa2xxx_model[i]; i++) | |
1532 | if (strncmp(device->model, msa2xxx_model[i], | |
1533 | strlen(msa2xxx_model[i])) == 0) | |
1534 | return 1; | |
1535 | return 0; | |
1536 | } | |
1537 | ||
1538 | /* Helper function to assign bus, target, lun mapping of devices. | |
1539 | * Puts non-msa2xxx logical volumes on bus 0, msa2xxx logical | |
1540 | * volumes on bus 1, physical devices on bus 2. and the hba on bus 3. | |
1541 | * Logical drive target and lun are assigned at this time, but | |
1542 | * physical device lun and target assignment are deferred (assigned | |
1543 | * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.) | |
1544 | */ | |
1545 | static void figure_bus_target_lun(struct ctlr_info *h, | |
01a02ffc | 1546 | u8 *lunaddrbytes, int *bus, int *target, int *lun, |
edd16368 SC |
1547 | struct hpsa_scsi_dev_t *device) |
1548 | { | |
01a02ffc | 1549 | u32 lunid; |
edd16368 SC |
1550 | |
1551 | if (is_logical_dev_addr_mode(lunaddrbytes)) { | |
1552 | /* logical device */ | |
339b2b14 SC |
1553 | if (unlikely(is_scsi_rev_5(h))) { |
1554 | /* p1210m, logical drives lun assignments | |
1555 | * match SCSI REPORT LUNS data. | |
1556 | */ | |
1557 | lunid = le32_to_cpu(*((__le32 *) lunaddrbytes)); | |
edd16368 | 1558 | *bus = 0; |
339b2b14 SC |
1559 | *target = 0; |
1560 | *lun = (lunid & 0x3fff) + 1; | |
1561 | } else { | |
1562 | /* not p1210m... */ | |
1563 | lunid = le32_to_cpu(*((__le32 *) lunaddrbytes)); | |
1564 | if (is_msa2xxx(h, device)) { | |
1565 | /* msa2xxx way, put logicals on bus 1 | |
1566 | * and match target/lun numbers box | |
1567 | * reports. | |
1568 | */ | |
1569 | *bus = 1; | |
1570 | *target = (lunid >> 16) & 0x3fff; | |
1571 | *lun = lunid & 0x00ff; | |
1572 | } else { | |
1573 | /* Traditional smart array way. */ | |
1574 | *bus = 0; | |
1575 | *lun = 0; | |
1576 | *target = lunid & 0x3fff; | |
1577 | } | |
edd16368 SC |
1578 | } |
1579 | } else { | |
1580 | /* physical device */ | |
1581 | if (is_hba_lunid(lunaddrbytes)) | |
339b2b14 SC |
1582 | if (unlikely(is_scsi_rev_5(h))) { |
1583 | *bus = 0; /* put p1210m ctlr at 0,0,0 */ | |
1584 | *target = 0; | |
1585 | *lun = 0; | |
1586 | return; | |
1587 | } else | |
1588 | *bus = 3; /* traditional smartarray */ | |
edd16368 | 1589 | else |
339b2b14 | 1590 | *bus = 2; /* physical disk */ |
edd16368 SC |
1591 | *target = -1; |
1592 | *lun = -1; /* we will fill these in later. */ | |
1593 | } | |
1594 | } | |
1595 | ||
1596 | /* | |
1597 | * If there is no lun 0 on a target, linux won't find any devices. | |
1598 | * For the MSA2xxx boxes, we have to manually detect the enclosure | |
1599 | * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report | |
1600 | * it for some reason. *tmpdevice is the target we're adding, | |
1601 | * this_device is a pointer into the current element of currentsd[] | |
1602 | * that we're building up in update_scsi_devices(), below. | |
1603 | * lunzerobits is a bitmap that tracks which targets already have a | |
1604 | * lun 0 assigned. | |
1605 | * Returns 1 if an enclosure was added, 0 if not. | |
1606 | */ | |
1607 | static int add_msa2xxx_enclosure_device(struct ctlr_info *h, | |
1608 | struct hpsa_scsi_dev_t *tmpdevice, | |
01a02ffc | 1609 | struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes, |
edd16368 SC |
1610 | int bus, int target, int lun, unsigned long lunzerobits[], |
1611 | int *nmsa2xxx_enclosures) | |
1612 | { | |
1613 | unsigned char scsi3addr[8]; | |
1614 | ||
1615 | if (test_bit(target, lunzerobits)) | |
1616 | return 0; /* There is already a lun 0 on this target. */ | |
1617 | ||
1618 | if (!is_logical_dev_addr_mode(lunaddrbytes)) | |
1619 | return 0; /* It's the logical targets that may lack lun 0. */ | |
1620 | ||
1621 | if (!is_msa2xxx(h, tmpdevice)) | |
1622 | return 0; /* It's only the MSA2xxx that have this problem. */ | |
1623 | ||
1624 | if (lun == 0) /* if lun is 0, then obviously we have a lun 0. */ | |
1625 | return 0; | |
1626 | ||
c4f8a299 SC |
1627 | memset(scsi3addr, 0, 8); |
1628 | scsi3addr[3] = target; | |
edd16368 SC |
1629 | if (is_hba_lunid(scsi3addr)) |
1630 | return 0; /* Don't add the RAID controller here. */ | |
1631 | ||
339b2b14 SC |
1632 | if (is_scsi_rev_5(h)) |
1633 | return 0; /* p1210m doesn't need to do this. */ | |
1634 | ||
edd16368 SC |
1635 | #define MAX_MSA2XXX_ENCLOSURES 32 |
1636 | if (*nmsa2xxx_enclosures >= MAX_MSA2XXX_ENCLOSURES) { | |
1637 | dev_warn(&h->pdev->dev, "Maximum number of MSA2XXX " | |
1638 | "enclosures exceeded. Check your hardware " | |
1639 | "configuration."); | |
1640 | return 0; | |
1641 | } | |
1642 | ||
edd16368 SC |
1643 | if (hpsa_update_device_info(h, scsi3addr, this_device)) |
1644 | return 0; | |
1645 | (*nmsa2xxx_enclosures)++; | |
1646 | hpsa_set_bus_target_lun(this_device, bus, target, 0); | |
1647 | set_bit(target, lunzerobits); | |
1648 | return 1; | |
1649 | } | |
1650 | ||
1651 | /* | |
1652 | * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev, | |
1653 | * logdev. The number of luns in physdev and logdev are returned in | |
1654 | * *nphysicals and *nlogicals, respectively. | |
1655 | * Returns 0 on success, -1 otherwise. | |
1656 | */ | |
1657 | static int hpsa_gather_lun_info(struct ctlr_info *h, | |
1658 | int reportlunsize, | |
01a02ffc SC |
1659 | struct ReportLUNdata *physdev, u32 *nphysicals, |
1660 | struct ReportLUNdata *logdev, u32 *nlogicals) | |
edd16368 SC |
1661 | { |
1662 | if (hpsa_scsi_do_report_phys_luns(h, physdev, reportlunsize, 0)) { | |
1663 | dev_err(&h->pdev->dev, "report physical LUNs failed.\n"); | |
1664 | return -1; | |
1665 | } | |
6df1e954 | 1666 | *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 8; |
edd16368 SC |
1667 | if (*nphysicals > HPSA_MAX_PHYS_LUN) { |
1668 | dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded." | |
1669 | " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, | |
1670 | *nphysicals - HPSA_MAX_PHYS_LUN); | |
1671 | *nphysicals = HPSA_MAX_PHYS_LUN; | |
1672 | } | |
1673 | if (hpsa_scsi_do_report_log_luns(h, logdev, reportlunsize)) { | |
1674 | dev_err(&h->pdev->dev, "report logical LUNs failed.\n"); | |
1675 | return -1; | |
1676 | } | |
6df1e954 | 1677 | *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8; |
edd16368 SC |
1678 | /* Reject Logicals in excess of our max capability. */ |
1679 | if (*nlogicals > HPSA_MAX_LUN) { | |
1680 | dev_warn(&h->pdev->dev, | |
1681 | "maximum logical LUNs (%d) exceeded. " | |
1682 | "%d LUNs ignored.\n", HPSA_MAX_LUN, | |
1683 | *nlogicals - HPSA_MAX_LUN); | |
1684 | *nlogicals = HPSA_MAX_LUN; | |
1685 | } | |
1686 | if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) { | |
1687 | dev_warn(&h->pdev->dev, | |
1688 | "maximum logical + physical LUNs (%d) exceeded. " | |
1689 | "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, | |
1690 | *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN); | |
1691 | *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals; | |
1692 | } | |
1693 | return 0; | |
1694 | } | |
1695 | ||
339b2b14 SC |
1696 | u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position, int i, |
1697 | int nphysicals, int nlogicals, struct ReportLUNdata *physdev_list, | |
1698 | struct ReportLUNdata *logdev_list) | |
1699 | { | |
1700 | /* Helper function, figure out where the LUN ID info is coming from | |
1701 | * given index i, lists of physical and logical devices, where in | |
1702 | * the list the raid controller is supposed to appear (first or last) | |
1703 | */ | |
1704 | ||
1705 | int logicals_start = nphysicals + (raid_ctlr_position == 0); | |
1706 | int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0); | |
1707 | ||
1708 | if (i == raid_ctlr_position) | |
1709 | return RAID_CTLR_LUNID; | |
1710 | ||
1711 | if (i < logicals_start) | |
1712 | return &physdev_list->LUN[i - (raid_ctlr_position == 0)][0]; | |
1713 | ||
1714 | if (i < last_device) | |
1715 | return &logdev_list->LUN[i - nphysicals - | |
1716 | (raid_ctlr_position == 0)][0]; | |
1717 | BUG(); | |
1718 | return NULL; | |
1719 | } | |
1720 | ||
edd16368 SC |
1721 | static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno) |
1722 | { | |
1723 | /* the idea here is we could get notified | |
1724 | * that some devices have changed, so we do a report | |
1725 | * physical luns and report logical luns cmd, and adjust | |
1726 | * our list of devices accordingly. | |
1727 | * | |
1728 | * The scsi3addr's of devices won't change so long as the | |
1729 | * adapter is not reset. That means we can rescan and | |
1730 | * tell which devices we already know about, vs. new | |
1731 | * devices, vs. disappearing devices. | |
1732 | */ | |
1733 | struct ReportLUNdata *physdev_list = NULL; | |
1734 | struct ReportLUNdata *logdev_list = NULL; | |
1735 | unsigned char *inq_buff = NULL; | |
01a02ffc SC |
1736 | u32 nphysicals = 0; |
1737 | u32 nlogicals = 0; | |
1738 | u32 ndev_allocated = 0; | |
edd16368 SC |
1739 | struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice; |
1740 | int ncurrent = 0; | |
1741 | int reportlunsize = sizeof(*physdev_list) + HPSA_MAX_PHYS_LUN * 8; | |
1742 | int i, nmsa2xxx_enclosures, ndevs_to_allocate; | |
1743 | int bus, target, lun; | |
339b2b14 | 1744 | int raid_ctlr_position; |
edd16368 SC |
1745 | DECLARE_BITMAP(lunzerobits, HPSA_MAX_TARGETS_PER_CTLR); |
1746 | ||
1747 | currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_SCSI_DEVS_PER_HBA, | |
1748 | GFP_KERNEL); | |
1749 | physdev_list = kzalloc(reportlunsize, GFP_KERNEL); | |
1750 | logdev_list = kzalloc(reportlunsize, GFP_KERNEL); | |
1751 | inq_buff = kmalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); | |
1752 | tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL); | |
1753 | ||
1754 | if (!currentsd || !physdev_list || !logdev_list || | |
1755 | !inq_buff || !tmpdevice) { | |
1756 | dev_err(&h->pdev->dev, "out of memory\n"); | |
1757 | goto out; | |
1758 | } | |
1759 | memset(lunzerobits, 0, sizeof(lunzerobits)); | |
1760 | ||
1761 | if (hpsa_gather_lun_info(h, reportlunsize, physdev_list, &nphysicals, | |
1762 | logdev_list, &nlogicals)) | |
1763 | goto out; | |
1764 | ||
1765 | /* We might see up to 32 MSA2xxx enclosures, actually 8 of them | |
1766 | * but each of them 4 times through different paths. The plus 1 | |
1767 | * is for the RAID controller. | |
1768 | */ | |
1769 | ndevs_to_allocate = nphysicals + nlogicals + MAX_MSA2XXX_ENCLOSURES + 1; | |
1770 | ||
1771 | /* Allocate the per device structures */ | |
1772 | for (i = 0; i < ndevs_to_allocate; i++) { | |
1773 | currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL); | |
1774 | if (!currentsd[i]) { | |
1775 | dev_warn(&h->pdev->dev, "out of memory at %s:%d\n", | |
1776 | __FILE__, __LINE__); | |
1777 | goto out; | |
1778 | } | |
1779 | ndev_allocated++; | |
1780 | } | |
1781 | ||
339b2b14 SC |
1782 | if (unlikely(is_scsi_rev_5(h))) |
1783 | raid_ctlr_position = 0; | |
1784 | else | |
1785 | raid_ctlr_position = nphysicals + nlogicals; | |
1786 | ||
edd16368 SC |
1787 | /* adjust our table of devices */ |
1788 | nmsa2xxx_enclosures = 0; | |
1789 | for (i = 0; i < nphysicals + nlogicals + 1; i++) { | |
01a02ffc | 1790 | u8 *lunaddrbytes; |
edd16368 SC |
1791 | |
1792 | /* Figure out where the LUN ID info is coming from */ | |
339b2b14 SC |
1793 | lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position, |
1794 | i, nphysicals, nlogicals, physdev_list, logdev_list); | |
edd16368 | 1795 | /* skip masked physical devices. */ |
339b2b14 SC |
1796 | if (lunaddrbytes[3] & 0xC0 && |
1797 | i < nphysicals + (raid_ctlr_position == 0)) | |
edd16368 SC |
1798 | continue; |
1799 | ||
1800 | /* Get device type, vendor, model, device id */ | |
1801 | if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice)) | |
1802 | continue; /* skip it if we can't talk to it. */ | |
1803 | figure_bus_target_lun(h, lunaddrbytes, &bus, &target, &lun, | |
1804 | tmpdevice); | |
1805 | this_device = currentsd[ncurrent]; | |
1806 | ||
1807 | /* | |
1808 | * For the msa2xxx boxes, we have to insert a LUN 0 which | |
1809 | * doesn't show up in CCISS_REPORT_PHYSICAL data, but there | |
1810 | * is nonetheless an enclosure device there. We have to | |
1811 | * present that otherwise linux won't find anything if | |
1812 | * there is no lun 0. | |
1813 | */ | |
1814 | if (add_msa2xxx_enclosure_device(h, tmpdevice, this_device, | |
1815 | lunaddrbytes, bus, target, lun, lunzerobits, | |
1816 | &nmsa2xxx_enclosures)) { | |
1817 | ncurrent++; | |
1818 | this_device = currentsd[ncurrent]; | |
1819 | } | |
1820 | ||
1821 | *this_device = *tmpdevice; | |
1822 | hpsa_set_bus_target_lun(this_device, bus, target, lun); | |
1823 | ||
1824 | switch (this_device->devtype) { | |
1825 | case TYPE_ROM: { | |
1826 | /* We don't *really* support actual CD-ROM devices, | |
1827 | * just "One Button Disaster Recovery" tape drive | |
1828 | * which temporarily pretends to be a CD-ROM drive. | |
1829 | * So we check that the device is really an OBDR tape | |
1830 | * device by checking for "$DR-10" in bytes 43-48 of | |
1831 | * the inquiry data. | |
1832 | */ | |
1833 | char obdr_sig[7]; | |
1834 | #define OBDR_TAPE_SIG "$DR-10" | |
1835 | strncpy(obdr_sig, &inq_buff[43], 6); | |
1836 | obdr_sig[6] = '\0'; | |
1837 | if (strncmp(obdr_sig, OBDR_TAPE_SIG, 6) != 0) | |
1838 | /* Not OBDR device, ignore it. */ | |
1839 | break; | |
1840 | } | |
1841 | ncurrent++; | |
1842 | break; | |
1843 | case TYPE_DISK: | |
1844 | if (i < nphysicals) | |
1845 | break; | |
1846 | ncurrent++; | |
1847 | break; | |
1848 | case TYPE_TAPE: | |
1849 | case TYPE_MEDIUM_CHANGER: | |
1850 | ncurrent++; | |
1851 | break; | |
1852 | case TYPE_RAID: | |
1853 | /* Only present the Smartarray HBA as a RAID controller. | |
1854 | * If it's a RAID controller other than the HBA itself | |
1855 | * (an external RAID controller, MSA500 or similar) | |
1856 | * don't present it. | |
1857 | */ | |
1858 | if (!is_hba_lunid(lunaddrbytes)) | |
1859 | break; | |
1860 | ncurrent++; | |
1861 | break; | |
1862 | default: | |
1863 | break; | |
1864 | } | |
1865 | if (ncurrent >= HPSA_MAX_SCSI_DEVS_PER_HBA) | |
1866 | break; | |
1867 | } | |
1868 | adjust_hpsa_scsi_table(h, hostno, currentsd, ncurrent); | |
1869 | out: | |
1870 | kfree(tmpdevice); | |
1871 | for (i = 0; i < ndev_allocated; i++) | |
1872 | kfree(currentsd[i]); | |
1873 | kfree(currentsd); | |
1874 | kfree(inq_buff); | |
1875 | kfree(physdev_list); | |
1876 | kfree(logdev_list); | |
edd16368 SC |
1877 | } |
1878 | ||
1879 | /* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci | |
1880 | * dma mapping and fills in the scatter gather entries of the | |
1881 | * hpsa command, cp. | |
1882 | */ | |
33a2ffce | 1883 | static int hpsa_scatter_gather(struct ctlr_info *h, |
edd16368 SC |
1884 | struct CommandList *cp, |
1885 | struct scsi_cmnd *cmd) | |
1886 | { | |
1887 | unsigned int len; | |
1888 | struct scatterlist *sg; | |
01a02ffc | 1889 | u64 addr64; |
33a2ffce SC |
1890 | int use_sg, i, sg_index, chained; |
1891 | struct SGDescriptor *curr_sg; | |
edd16368 | 1892 | |
33a2ffce | 1893 | BUG_ON(scsi_sg_count(cmd) > h->maxsgentries); |
edd16368 SC |
1894 | |
1895 | use_sg = scsi_dma_map(cmd); | |
1896 | if (use_sg < 0) | |
1897 | return use_sg; | |
1898 | ||
1899 | if (!use_sg) | |
1900 | goto sglist_finished; | |
1901 | ||
33a2ffce SC |
1902 | curr_sg = cp->SG; |
1903 | chained = 0; | |
1904 | sg_index = 0; | |
edd16368 | 1905 | scsi_for_each_sg(cmd, sg, use_sg, i) { |
33a2ffce SC |
1906 | if (i == h->max_cmd_sg_entries - 1 && |
1907 | use_sg > h->max_cmd_sg_entries) { | |
1908 | chained = 1; | |
1909 | curr_sg = h->cmd_sg_list[cp->cmdindex]; | |
1910 | sg_index = 0; | |
1911 | } | |
01a02ffc | 1912 | addr64 = (u64) sg_dma_address(sg); |
edd16368 | 1913 | len = sg_dma_len(sg); |
33a2ffce SC |
1914 | curr_sg->Addr.lower = (u32) (addr64 & 0x0FFFFFFFFULL); |
1915 | curr_sg->Addr.upper = (u32) ((addr64 >> 32) & 0x0FFFFFFFFULL); | |
1916 | curr_sg->Len = len; | |
1917 | curr_sg->Ext = 0; /* we are not chaining */ | |
1918 | curr_sg++; | |
1919 | } | |
1920 | ||
1921 | if (use_sg + chained > h->maxSG) | |
1922 | h->maxSG = use_sg + chained; | |
1923 | ||
1924 | if (chained) { | |
1925 | cp->Header.SGList = h->max_cmd_sg_entries; | |
1926 | cp->Header.SGTotal = (u16) (use_sg + 1); | |
1927 | hpsa_map_sg_chain_block(h, cp); | |
1928 | return 0; | |
edd16368 SC |
1929 | } |
1930 | ||
1931 | sglist_finished: | |
1932 | ||
01a02ffc SC |
1933 | cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */ |
1934 | cp->Header.SGTotal = (u16) use_sg; /* total sgs in this cmd list */ | |
edd16368 SC |
1935 | return 0; |
1936 | } | |
1937 | ||
1938 | ||
f281233d | 1939 | static int hpsa_scsi_queue_command_lck(struct scsi_cmnd *cmd, |
edd16368 SC |
1940 | void (*done)(struct scsi_cmnd *)) |
1941 | { | |
1942 | struct ctlr_info *h; | |
1943 | struct hpsa_scsi_dev_t *dev; | |
1944 | unsigned char scsi3addr[8]; | |
1945 | struct CommandList *c; | |
1946 | unsigned long flags; | |
1947 | ||
1948 | /* Get the ptr to our adapter structure out of cmd->host. */ | |
1949 | h = sdev_to_hba(cmd->device); | |
1950 | dev = cmd->device->hostdata; | |
1951 | if (!dev) { | |
1952 | cmd->result = DID_NO_CONNECT << 16; | |
1953 | done(cmd); | |
1954 | return 0; | |
1955 | } | |
1956 | memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr)); | |
1957 | ||
1958 | /* Need a lock as this is being allocated from the pool */ | |
1959 | spin_lock_irqsave(&h->lock, flags); | |
1960 | c = cmd_alloc(h); | |
1961 | spin_unlock_irqrestore(&h->lock, flags); | |
1962 | if (c == NULL) { /* trouble... */ | |
1963 | dev_err(&h->pdev->dev, "cmd_alloc returned NULL!\n"); | |
1964 | return SCSI_MLQUEUE_HOST_BUSY; | |
1965 | } | |
1966 | ||
1967 | /* Fill in the command list header */ | |
1968 | ||
1969 | cmd->scsi_done = done; /* save this for use by completion code */ | |
1970 | ||
1971 | /* save c in case we have to abort it */ | |
1972 | cmd->host_scribble = (unsigned char *) c; | |
1973 | ||
1974 | c->cmd_type = CMD_SCSI; | |
1975 | c->scsi_cmd = cmd; | |
1976 | c->Header.ReplyQueue = 0; /* unused in simple mode */ | |
1977 | memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8); | |
303932fd DB |
1978 | c->Header.Tag.lower = (c->cmdindex << DIRECT_LOOKUP_SHIFT); |
1979 | c->Header.Tag.lower |= DIRECT_LOOKUP_BIT; | |
edd16368 SC |
1980 | |
1981 | /* Fill in the request block... */ | |
1982 | ||
1983 | c->Request.Timeout = 0; | |
1984 | memset(c->Request.CDB, 0, sizeof(c->Request.CDB)); | |
1985 | BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB)); | |
1986 | c->Request.CDBLen = cmd->cmd_len; | |
1987 | memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len); | |
1988 | c->Request.Type.Type = TYPE_CMD; | |
1989 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1990 | switch (cmd->sc_data_direction) { | |
1991 | case DMA_TO_DEVICE: | |
1992 | c->Request.Type.Direction = XFER_WRITE; | |
1993 | break; | |
1994 | case DMA_FROM_DEVICE: | |
1995 | c->Request.Type.Direction = XFER_READ; | |
1996 | break; | |
1997 | case DMA_NONE: | |
1998 | c->Request.Type.Direction = XFER_NONE; | |
1999 | break; | |
2000 | case DMA_BIDIRECTIONAL: | |
2001 | /* This can happen if a buggy application does a scsi passthru | |
2002 | * and sets both inlen and outlen to non-zero. ( see | |
2003 | * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() ) | |
2004 | */ | |
2005 | ||
2006 | c->Request.Type.Direction = XFER_RSVD; | |
2007 | /* This is technically wrong, and hpsa controllers should | |
2008 | * reject it with CMD_INVALID, which is the most correct | |
2009 | * response, but non-fibre backends appear to let it | |
2010 | * slide by, and give the same results as if this field | |
2011 | * were set correctly. Either way is acceptable for | |
2012 | * our purposes here. | |
2013 | */ | |
2014 | ||
2015 | break; | |
2016 | ||
2017 | default: | |
2018 | dev_err(&h->pdev->dev, "unknown data direction: %d\n", | |
2019 | cmd->sc_data_direction); | |
2020 | BUG(); | |
2021 | break; | |
2022 | } | |
2023 | ||
33a2ffce | 2024 | if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */ |
edd16368 SC |
2025 | cmd_free(h, c); |
2026 | return SCSI_MLQUEUE_HOST_BUSY; | |
2027 | } | |
2028 | enqueue_cmd_and_start_io(h, c); | |
2029 | /* the cmd'll come back via intr handler in complete_scsi_command() */ | |
2030 | return 0; | |
2031 | } | |
2032 | ||
f281233d JG |
2033 | static DEF_SCSI_QCMD(hpsa_scsi_queue_command) |
2034 | ||
a08a8471 SC |
2035 | static void hpsa_scan_start(struct Scsi_Host *sh) |
2036 | { | |
2037 | struct ctlr_info *h = shost_to_hba(sh); | |
2038 | unsigned long flags; | |
2039 | ||
2040 | /* wait until any scan already in progress is finished. */ | |
2041 | while (1) { | |
2042 | spin_lock_irqsave(&h->scan_lock, flags); | |
2043 | if (h->scan_finished) | |
2044 | break; | |
2045 | spin_unlock_irqrestore(&h->scan_lock, flags); | |
2046 | wait_event(h->scan_wait_queue, h->scan_finished); | |
2047 | /* Note: We don't need to worry about a race between this | |
2048 | * thread and driver unload because the midlayer will | |
2049 | * have incremented the reference count, so unload won't | |
2050 | * happen if we're in here. | |
2051 | */ | |
2052 | } | |
2053 | h->scan_finished = 0; /* mark scan as in progress */ | |
2054 | spin_unlock_irqrestore(&h->scan_lock, flags); | |
2055 | ||
2056 | hpsa_update_scsi_devices(h, h->scsi_host->host_no); | |
2057 | ||
2058 | spin_lock_irqsave(&h->scan_lock, flags); | |
2059 | h->scan_finished = 1; /* mark scan as finished. */ | |
2060 | wake_up_all(&h->scan_wait_queue); | |
2061 | spin_unlock_irqrestore(&h->scan_lock, flags); | |
2062 | } | |
2063 | ||
2064 | static int hpsa_scan_finished(struct Scsi_Host *sh, | |
2065 | unsigned long elapsed_time) | |
2066 | { | |
2067 | struct ctlr_info *h = shost_to_hba(sh); | |
2068 | unsigned long flags; | |
2069 | int finished; | |
2070 | ||
2071 | spin_lock_irqsave(&h->scan_lock, flags); | |
2072 | finished = h->scan_finished; | |
2073 | spin_unlock_irqrestore(&h->scan_lock, flags); | |
2074 | return finished; | |
2075 | } | |
2076 | ||
667e23d4 SC |
2077 | static int hpsa_change_queue_depth(struct scsi_device *sdev, |
2078 | int qdepth, int reason) | |
2079 | { | |
2080 | struct ctlr_info *h = sdev_to_hba(sdev); | |
2081 | ||
2082 | if (reason != SCSI_QDEPTH_DEFAULT) | |
2083 | return -ENOTSUPP; | |
2084 | ||
2085 | if (qdepth < 1) | |
2086 | qdepth = 1; | |
2087 | else | |
2088 | if (qdepth > h->nr_cmds) | |
2089 | qdepth = h->nr_cmds; | |
2090 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); | |
2091 | return sdev->queue_depth; | |
2092 | } | |
2093 | ||
edd16368 SC |
2094 | static void hpsa_unregister_scsi(struct ctlr_info *h) |
2095 | { | |
2096 | /* we are being forcibly unloaded, and may not refuse. */ | |
2097 | scsi_remove_host(h->scsi_host); | |
2098 | scsi_host_put(h->scsi_host); | |
2099 | h->scsi_host = NULL; | |
2100 | } | |
2101 | ||
2102 | static int hpsa_register_scsi(struct ctlr_info *h) | |
2103 | { | |
2104 | int rc; | |
2105 | ||
edd16368 SC |
2106 | rc = hpsa_scsi_detect(h); |
2107 | if (rc != 0) | |
2108 | dev_err(&h->pdev->dev, "hpsa_register_scsi: failed" | |
2109 | " hpsa_scsi_detect(), rc is %d\n", rc); | |
2110 | return rc; | |
2111 | } | |
2112 | ||
2113 | static int wait_for_device_to_become_ready(struct ctlr_info *h, | |
2114 | unsigned char lunaddr[]) | |
2115 | { | |
2116 | int rc = 0; | |
2117 | int count = 0; | |
2118 | int waittime = 1; /* seconds */ | |
2119 | struct CommandList *c; | |
2120 | ||
2121 | c = cmd_special_alloc(h); | |
2122 | if (!c) { | |
2123 | dev_warn(&h->pdev->dev, "out of memory in " | |
2124 | "wait_for_device_to_become_ready.\n"); | |
2125 | return IO_ERROR; | |
2126 | } | |
2127 | ||
2128 | /* Send test unit ready until device ready, or give up. */ | |
2129 | while (count < HPSA_TUR_RETRY_LIMIT) { | |
2130 | ||
2131 | /* Wait for a bit. do this first, because if we send | |
2132 | * the TUR right away, the reset will just abort it. | |
2133 | */ | |
2134 | msleep(1000 * waittime); | |
2135 | count++; | |
2136 | ||
2137 | /* Increase wait time with each try, up to a point. */ | |
2138 | if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS) | |
2139 | waittime = waittime * 2; | |
2140 | ||
2141 | /* Send the Test Unit Ready */ | |
2142 | fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, lunaddr, TYPE_CMD); | |
2143 | hpsa_scsi_do_simple_cmd_core(h, c); | |
2144 | /* no unmap needed here because no data xfer. */ | |
2145 | ||
2146 | if (c->err_info->CommandStatus == CMD_SUCCESS) | |
2147 | break; | |
2148 | ||
2149 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && | |
2150 | c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION && | |
2151 | (c->err_info->SenseInfo[2] == NO_SENSE || | |
2152 | c->err_info->SenseInfo[2] == UNIT_ATTENTION)) | |
2153 | break; | |
2154 | ||
2155 | dev_warn(&h->pdev->dev, "waiting %d secs " | |
2156 | "for device to become ready.\n", waittime); | |
2157 | rc = 1; /* device not ready. */ | |
2158 | } | |
2159 | ||
2160 | if (rc) | |
2161 | dev_warn(&h->pdev->dev, "giving up on device.\n"); | |
2162 | else | |
2163 | dev_warn(&h->pdev->dev, "device is ready.\n"); | |
2164 | ||
2165 | cmd_special_free(h, c); | |
2166 | return rc; | |
2167 | } | |
2168 | ||
2169 | /* Need at least one of these error handlers to keep ../scsi/hosts.c from | |
2170 | * complaining. Doing a host- or bus-reset can't do anything good here. | |
2171 | */ | |
2172 | static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) | |
2173 | { | |
2174 | int rc; | |
2175 | struct ctlr_info *h; | |
2176 | struct hpsa_scsi_dev_t *dev; | |
2177 | ||
2178 | /* find the controller to which the command to be aborted was sent */ | |
2179 | h = sdev_to_hba(scsicmd->device); | |
2180 | if (h == NULL) /* paranoia */ | |
2181 | return FAILED; | |
edd16368 SC |
2182 | dev = scsicmd->device->hostdata; |
2183 | if (!dev) { | |
2184 | dev_err(&h->pdev->dev, "hpsa_eh_device_reset_handler: " | |
2185 | "device lookup failed.\n"); | |
2186 | return FAILED; | |
2187 | } | |
d416b0c7 SC |
2188 | dev_warn(&h->pdev->dev, "resetting device %d:%d:%d:%d\n", |
2189 | h->scsi_host->host_no, dev->bus, dev->target, dev->lun); | |
edd16368 SC |
2190 | /* send a reset to the SCSI LUN which the command was sent to */ |
2191 | rc = hpsa_send_reset(h, dev->scsi3addr); | |
2192 | if (rc == 0 && wait_for_device_to_become_ready(h, dev->scsi3addr) == 0) | |
2193 | return SUCCESS; | |
2194 | ||
2195 | dev_warn(&h->pdev->dev, "resetting device failed.\n"); | |
2196 | return FAILED; | |
2197 | } | |
2198 | ||
2199 | /* | |
2200 | * For operations that cannot sleep, a command block is allocated at init, | |
2201 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track | |
2202 | * which ones are free or in use. Lock must be held when calling this. | |
2203 | * cmd_free() is the complement. | |
2204 | */ | |
2205 | static struct CommandList *cmd_alloc(struct ctlr_info *h) | |
2206 | { | |
2207 | struct CommandList *c; | |
2208 | int i; | |
2209 | union u64bit temp64; | |
2210 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
2211 | ||
2212 | do { | |
2213 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); | |
2214 | if (i == h->nr_cmds) | |
2215 | return NULL; | |
2216 | } while (test_and_set_bit | |
2217 | (i & (BITS_PER_LONG - 1), | |
2218 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
2219 | c = h->cmd_pool + i; | |
2220 | memset(c, 0, sizeof(*c)); | |
2221 | cmd_dma_handle = h->cmd_pool_dhandle | |
2222 | + i * sizeof(*c); | |
2223 | c->err_info = h->errinfo_pool + i; | |
2224 | memset(c->err_info, 0, sizeof(*c->err_info)); | |
2225 | err_dma_handle = h->errinfo_pool_dhandle | |
2226 | + i * sizeof(*c->err_info); | |
2227 | h->nr_allocs++; | |
2228 | ||
2229 | c->cmdindex = i; | |
2230 | ||
2231 | INIT_HLIST_NODE(&c->list); | |
01a02ffc SC |
2232 | c->busaddr = (u32) cmd_dma_handle; |
2233 | temp64.val = (u64) err_dma_handle; | |
edd16368 SC |
2234 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
2235 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
2236 | c->ErrDesc.Len = sizeof(*c->err_info); | |
2237 | ||
2238 | c->h = h; | |
2239 | return c; | |
2240 | } | |
2241 | ||
2242 | /* For operations that can wait for kmalloc to possibly sleep, | |
2243 | * this routine can be called. Lock need not be held to call | |
2244 | * cmd_special_alloc. cmd_special_free() is the complement. | |
2245 | */ | |
2246 | static struct CommandList *cmd_special_alloc(struct ctlr_info *h) | |
2247 | { | |
2248 | struct CommandList *c; | |
2249 | union u64bit temp64; | |
2250 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
2251 | ||
2252 | c = pci_alloc_consistent(h->pdev, sizeof(*c), &cmd_dma_handle); | |
2253 | if (c == NULL) | |
2254 | return NULL; | |
2255 | memset(c, 0, sizeof(*c)); | |
2256 | ||
2257 | c->cmdindex = -1; | |
2258 | ||
2259 | c->err_info = pci_alloc_consistent(h->pdev, sizeof(*c->err_info), | |
2260 | &err_dma_handle); | |
2261 | ||
2262 | if (c->err_info == NULL) { | |
2263 | pci_free_consistent(h->pdev, | |
2264 | sizeof(*c), c, cmd_dma_handle); | |
2265 | return NULL; | |
2266 | } | |
2267 | memset(c->err_info, 0, sizeof(*c->err_info)); | |
2268 | ||
2269 | INIT_HLIST_NODE(&c->list); | |
01a02ffc SC |
2270 | c->busaddr = (u32) cmd_dma_handle; |
2271 | temp64.val = (u64) err_dma_handle; | |
edd16368 SC |
2272 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
2273 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
2274 | c->ErrDesc.Len = sizeof(*c->err_info); | |
2275 | ||
2276 | c->h = h; | |
2277 | return c; | |
2278 | } | |
2279 | ||
2280 | static void cmd_free(struct ctlr_info *h, struct CommandList *c) | |
2281 | { | |
2282 | int i; | |
2283 | ||
2284 | i = c - h->cmd_pool; | |
2285 | clear_bit(i & (BITS_PER_LONG - 1), | |
2286 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
2287 | h->nr_frees++; | |
2288 | } | |
2289 | ||
2290 | static void cmd_special_free(struct ctlr_info *h, struct CommandList *c) | |
2291 | { | |
2292 | union u64bit temp64; | |
2293 | ||
2294 | temp64.val32.lower = c->ErrDesc.Addr.lower; | |
2295 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
2296 | pci_free_consistent(h->pdev, sizeof(*c->err_info), | |
2297 | c->err_info, (dma_addr_t) temp64.val); | |
2298 | pci_free_consistent(h->pdev, sizeof(*c), | |
d896f3f3 | 2299 | c, (dma_addr_t) (c->busaddr & DIRECT_LOOKUP_MASK)); |
edd16368 SC |
2300 | } |
2301 | ||
2302 | #ifdef CONFIG_COMPAT | |
2303 | ||
edd16368 SC |
2304 | static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, void *arg) |
2305 | { | |
2306 | IOCTL32_Command_struct __user *arg32 = | |
2307 | (IOCTL32_Command_struct __user *) arg; | |
2308 | IOCTL_Command_struct arg64; | |
2309 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
2310 | int err; | |
2311 | u32 cp; | |
2312 | ||
2313 | err = 0; | |
2314 | err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
2315 | sizeof(arg64.LUN_info)); | |
2316 | err |= copy_from_user(&arg64.Request, &arg32->Request, | |
2317 | sizeof(arg64.Request)); | |
2318 | err |= copy_from_user(&arg64.error_info, &arg32->error_info, | |
2319 | sizeof(arg64.error_info)); | |
2320 | err |= get_user(arg64.buf_size, &arg32->buf_size); | |
2321 | err |= get_user(cp, &arg32->buf); | |
2322 | arg64.buf = compat_ptr(cp); | |
2323 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
2324 | ||
2325 | if (err) | |
2326 | return -EFAULT; | |
2327 | ||
e39eeaed | 2328 | err = hpsa_ioctl(dev, CCISS_PASSTHRU, (void *)p); |
edd16368 SC |
2329 | if (err) |
2330 | return err; | |
2331 | err |= copy_in_user(&arg32->error_info, &p->error_info, | |
2332 | sizeof(arg32->error_info)); | |
2333 | if (err) | |
2334 | return -EFAULT; | |
2335 | return err; | |
2336 | } | |
2337 | ||
2338 | static int hpsa_ioctl32_big_passthru(struct scsi_device *dev, | |
2339 | int cmd, void *arg) | |
2340 | { | |
2341 | BIG_IOCTL32_Command_struct __user *arg32 = | |
2342 | (BIG_IOCTL32_Command_struct __user *) arg; | |
2343 | BIG_IOCTL_Command_struct arg64; | |
2344 | BIG_IOCTL_Command_struct __user *p = | |
2345 | compat_alloc_user_space(sizeof(arg64)); | |
2346 | int err; | |
2347 | u32 cp; | |
2348 | ||
2349 | err = 0; | |
2350 | err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
2351 | sizeof(arg64.LUN_info)); | |
2352 | err |= copy_from_user(&arg64.Request, &arg32->Request, | |
2353 | sizeof(arg64.Request)); | |
2354 | err |= copy_from_user(&arg64.error_info, &arg32->error_info, | |
2355 | sizeof(arg64.error_info)); | |
2356 | err |= get_user(arg64.buf_size, &arg32->buf_size); | |
2357 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
2358 | err |= get_user(cp, &arg32->buf); | |
2359 | arg64.buf = compat_ptr(cp); | |
2360 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
2361 | ||
2362 | if (err) | |
2363 | return -EFAULT; | |
2364 | ||
e39eeaed | 2365 | err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, (void *)p); |
edd16368 SC |
2366 | if (err) |
2367 | return err; | |
2368 | err |= copy_in_user(&arg32->error_info, &p->error_info, | |
2369 | sizeof(arg32->error_info)); | |
2370 | if (err) | |
2371 | return -EFAULT; | |
2372 | return err; | |
2373 | } | |
71fe75a7 SC |
2374 | |
2375 | static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg) | |
2376 | { | |
2377 | switch (cmd) { | |
2378 | case CCISS_GETPCIINFO: | |
2379 | case CCISS_GETINTINFO: | |
2380 | case CCISS_SETINTINFO: | |
2381 | case CCISS_GETNODENAME: | |
2382 | case CCISS_SETNODENAME: | |
2383 | case CCISS_GETHEARTBEAT: | |
2384 | case CCISS_GETBUSTYPES: | |
2385 | case CCISS_GETFIRMVER: | |
2386 | case CCISS_GETDRIVVER: | |
2387 | case CCISS_REVALIDVOLS: | |
2388 | case CCISS_DEREGDISK: | |
2389 | case CCISS_REGNEWDISK: | |
2390 | case CCISS_REGNEWD: | |
2391 | case CCISS_RESCANDISK: | |
2392 | case CCISS_GETLUNINFO: | |
2393 | return hpsa_ioctl(dev, cmd, arg); | |
2394 | ||
2395 | case CCISS_PASSTHRU32: | |
2396 | return hpsa_ioctl32_passthru(dev, cmd, arg); | |
2397 | case CCISS_BIG_PASSTHRU32: | |
2398 | return hpsa_ioctl32_big_passthru(dev, cmd, arg); | |
2399 | ||
2400 | default: | |
2401 | return -ENOIOCTLCMD; | |
2402 | } | |
2403 | } | |
edd16368 SC |
2404 | #endif |
2405 | ||
2406 | static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp) | |
2407 | { | |
2408 | struct hpsa_pci_info pciinfo; | |
2409 | ||
2410 | if (!argp) | |
2411 | return -EINVAL; | |
2412 | pciinfo.domain = pci_domain_nr(h->pdev->bus); | |
2413 | pciinfo.bus = h->pdev->bus->number; | |
2414 | pciinfo.dev_fn = h->pdev->devfn; | |
2415 | pciinfo.board_id = h->board_id; | |
2416 | if (copy_to_user(argp, &pciinfo, sizeof(pciinfo))) | |
2417 | return -EFAULT; | |
2418 | return 0; | |
2419 | } | |
2420 | ||
2421 | static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp) | |
2422 | { | |
2423 | DriverVer_type DriverVer; | |
2424 | unsigned char vmaj, vmin, vsubmin; | |
2425 | int rc; | |
2426 | ||
2427 | rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu", | |
2428 | &vmaj, &vmin, &vsubmin); | |
2429 | if (rc != 3) { | |
2430 | dev_info(&h->pdev->dev, "driver version string '%s' " | |
2431 | "unrecognized.", HPSA_DRIVER_VERSION); | |
2432 | vmaj = 0; | |
2433 | vmin = 0; | |
2434 | vsubmin = 0; | |
2435 | } | |
2436 | DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin; | |
2437 | if (!argp) | |
2438 | return -EINVAL; | |
2439 | if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type))) | |
2440 | return -EFAULT; | |
2441 | return 0; | |
2442 | } | |
2443 | ||
2444 | static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp) | |
2445 | { | |
2446 | IOCTL_Command_struct iocommand; | |
2447 | struct CommandList *c; | |
2448 | char *buff = NULL; | |
2449 | union u64bit temp64; | |
2450 | ||
2451 | if (!argp) | |
2452 | return -EINVAL; | |
2453 | if (!capable(CAP_SYS_RAWIO)) | |
2454 | return -EPERM; | |
2455 | if (copy_from_user(&iocommand, argp, sizeof(iocommand))) | |
2456 | return -EFAULT; | |
2457 | if ((iocommand.buf_size < 1) && | |
2458 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
2459 | return -EINVAL; | |
2460 | } | |
2461 | if (iocommand.buf_size > 0) { | |
2462 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
2463 | if (buff == NULL) | |
2464 | return -EFAULT; | |
b03a7771 SC |
2465 | if (iocommand.Request.Type.Direction == XFER_WRITE) { |
2466 | /* Copy the data into the buffer we created */ | |
2467 | if (copy_from_user(buff, iocommand.buf, | |
2468 | iocommand.buf_size)) { | |
2469 | kfree(buff); | |
2470 | return -EFAULT; | |
2471 | } | |
2472 | } else { | |
2473 | memset(buff, 0, iocommand.buf_size); | |
edd16368 | 2474 | } |
b03a7771 | 2475 | } |
edd16368 SC |
2476 | c = cmd_special_alloc(h); |
2477 | if (c == NULL) { | |
2478 | kfree(buff); | |
2479 | return -ENOMEM; | |
2480 | } | |
2481 | /* Fill in the command type */ | |
2482 | c->cmd_type = CMD_IOCTL_PEND; | |
2483 | /* Fill in Command Header */ | |
2484 | c->Header.ReplyQueue = 0; /* unused in simple mode */ | |
2485 | if (iocommand.buf_size > 0) { /* buffer to fill */ | |
2486 | c->Header.SGList = 1; | |
2487 | c->Header.SGTotal = 1; | |
2488 | } else { /* no buffers to fill */ | |
2489 | c->Header.SGList = 0; | |
2490 | c->Header.SGTotal = 0; | |
2491 | } | |
2492 | memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN)); | |
2493 | /* use the kernel address the cmd block for tag */ | |
2494 | c->Header.Tag.lower = c->busaddr; | |
2495 | ||
2496 | /* Fill in Request block */ | |
2497 | memcpy(&c->Request, &iocommand.Request, | |
2498 | sizeof(c->Request)); | |
2499 | ||
2500 | /* Fill in the scatter gather information */ | |
2501 | if (iocommand.buf_size > 0) { | |
2502 | temp64.val = pci_map_single(h->pdev, buff, | |
2503 | iocommand.buf_size, PCI_DMA_BIDIRECTIONAL); | |
2504 | c->SG[0].Addr.lower = temp64.val32.lower; | |
2505 | c->SG[0].Addr.upper = temp64.val32.upper; | |
2506 | c->SG[0].Len = iocommand.buf_size; | |
2507 | c->SG[0].Ext = 0; /* we are not chaining*/ | |
2508 | } | |
2509 | hpsa_scsi_do_simple_cmd_core(h, c); | |
2510 | hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL); | |
2511 | check_ioctl_unit_attention(h, c); | |
2512 | ||
2513 | /* Copy the error information out */ | |
2514 | memcpy(&iocommand.error_info, c->err_info, | |
2515 | sizeof(iocommand.error_info)); | |
2516 | if (copy_to_user(argp, &iocommand, sizeof(iocommand))) { | |
2517 | kfree(buff); | |
2518 | cmd_special_free(h, c); | |
2519 | return -EFAULT; | |
2520 | } | |
b03a7771 SC |
2521 | if (iocommand.Request.Type.Direction == XFER_READ && |
2522 | iocommand.buf_size > 0) { | |
edd16368 SC |
2523 | /* Copy the data out of the buffer we created */ |
2524 | if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) { | |
2525 | kfree(buff); | |
2526 | cmd_special_free(h, c); | |
2527 | return -EFAULT; | |
2528 | } | |
2529 | } | |
2530 | kfree(buff); | |
2531 | cmd_special_free(h, c); | |
2532 | return 0; | |
2533 | } | |
2534 | ||
2535 | static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp) | |
2536 | { | |
2537 | BIG_IOCTL_Command_struct *ioc; | |
2538 | struct CommandList *c; | |
2539 | unsigned char **buff = NULL; | |
2540 | int *buff_size = NULL; | |
2541 | union u64bit temp64; | |
2542 | BYTE sg_used = 0; | |
2543 | int status = 0; | |
2544 | int i; | |
01a02ffc SC |
2545 | u32 left; |
2546 | u32 sz; | |
edd16368 SC |
2547 | BYTE __user *data_ptr; |
2548 | ||
2549 | if (!argp) | |
2550 | return -EINVAL; | |
2551 | if (!capable(CAP_SYS_RAWIO)) | |
2552 | return -EPERM; | |
2553 | ioc = (BIG_IOCTL_Command_struct *) | |
2554 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
2555 | if (!ioc) { | |
2556 | status = -ENOMEM; | |
2557 | goto cleanup1; | |
2558 | } | |
2559 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
2560 | status = -EFAULT; | |
2561 | goto cleanup1; | |
2562 | } | |
2563 | if ((ioc->buf_size < 1) && | |
2564 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
2565 | status = -EINVAL; | |
2566 | goto cleanup1; | |
2567 | } | |
2568 | /* Check kmalloc limits using all SGs */ | |
2569 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
2570 | status = -EINVAL; | |
2571 | goto cleanup1; | |
2572 | } | |
2573 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
2574 | status = -EINVAL; | |
2575 | goto cleanup1; | |
2576 | } | |
2577 | buff = kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
2578 | if (!buff) { | |
2579 | status = -ENOMEM; | |
2580 | goto cleanup1; | |
2581 | } | |
2582 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), GFP_KERNEL); | |
2583 | if (!buff_size) { | |
2584 | status = -ENOMEM; | |
2585 | goto cleanup1; | |
2586 | } | |
2587 | left = ioc->buf_size; | |
2588 | data_ptr = ioc->buf; | |
2589 | while (left) { | |
2590 | sz = (left > ioc->malloc_size) ? ioc->malloc_size : left; | |
2591 | buff_size[sg_used] = sz; | |
2592 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
2593 | if (buff[sg_used] == NULL) { | |
2594 | status = -ENOMEM; | |
2595 | goto cleanup1; | |
2596 | } | |
2597 | if (ioc->Request.Type.Direction == XFER_WRITE) { | |
2598 | if (copy_from_user(buff[sg_used], data_ptr, sz)) { | |
2599 | status = -ENOMEM; | |
2600 | goto cleanup1; | |
2601 | } | |
2602 | } else | |
2603 | memset(buff[sg_used], 0, sz); | |
2604 | left -= sz; | |
2605 | data_ptr += sz; | |
2606 | sg_used++; | |
2607 | } | |
2608 | c = cmd_special_alloc(h); | |
2609 | if (c == NULL) { | |
2610 | status = -ENOMEM; | |
2611 | goto cleanup1; | |
2612 | } | |
2613 | c->cmd_type = CMD_IOCTL_PEND; | |
2614 | c->Header.ReplyQueue = 0; | |
b03a7771 | 2615 | c->Header.SGList = c->Header.SGTotal = sg_used; |
edd16368 SC |
2616 | memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN)); |
2617 | c->Header.Tag.lower = c->busaddr; | |
2618 | memcpy(&c->Request, &ioc->Request, sizeof(c->Request)); | |
2619 | if (ioc->buf_size > 0) { | |
2620 | int i; | |
2621 | for (i = 0; i < sg_used; i++) { | |
2622 | temp64.val = pci_map_single(h->pdev, buff[i], | |
2623 | buff_size[i], PCI_DMA_BIDIRECTIONAL); | |
2624 | c->SG[i].Addr.lower = temp64.val32.lower; | |
2625 | c->SG[i].Addr.upper = temp64.val32.upper; | |
2626 | c->SG[i].Len = buff_size[i]; | |
2627 | /* we are not chaining */ | |
2628 | c->SG[i].Ext = 0; | |
2629 | } | |
2630 | } | |
2631 | hpsa_scsi_do_simple_cmd_core(h, c); | |
b03a7771 SC |
2632 | if (sg_used) |
2633 | hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL); | |
edd16368 SC |
2634 | check_ioctl_unit_attention(h, c); |
2635 | /* Copy the error information out */ | |
2636 | memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info)); | |
2637 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
2638 | cmd_special_free(h, c); | |
2639 | status = -EFAULT; | |
2640 | goto cleanup1; | |
2641 | } | |
b03a7771 | 2642 | if (ioc->Request.Type.Direction == XFER_READ && ioc->buf_size > 0) { |
edd16368 SC |
2643 | /* Copy the data out of the buffer we created */ |
2644 | BYTE __user *ptr = ioc->buf; | |
2645 | for (i = 0; i < sg_used; i++) { | |
2646 | if (copy_to_user(ptr, buff[i], buff_size[i])) { | |
2647 | cmd_special_free(h, c); | |
2648 | status = -EFAULT; | |
2649 | goto cleanup1; | |
2650 | } | |
2651 | ptr += buff_size[i]; | |
2652 | } | |
2653 | } | |
2654 | cmd_special_free(h, c); | |
2655 | status = 0; | |
2656 | cleanup1: | |
2657 | if (buff) { | |
2658 | for (i = 0; i < sg_used; i++) | |
2659 | kfree(buff[i]); | |
2660 | kfree(buff); | |
2661 | } | |
2662 | kfree(buff_size); | |
2663 | kfree(ioc); | |
2664 | return status; | |
2665 | } | |
2666 | ||
2667 | static void check_ioctl_unit_attention(struct ctlr_info *h, | |
2668 | struct CommandList *c) | |
2669 | { | |
2670 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && | |
2671 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) | |
2672 | (void) check_for_unit_attention(h, c); | |
2673 | } | |
2674 | /* | |
2675 | * ioctl | |
2676 | */ | |
2677 | static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg) | |
2678 | { | |
2679 | struct ctlr_info *h; | |
2680 | void __user *argp = (void __user *)arg; | |
2681 | ||
2682 | h = sdev_to_hba(dev); | |
2683 | ||
2684 | switch (cmd) { | |
2685 | case CCISS_DEREGDISK: | |
2686 | case CCISS_REGNEWDISK: | |
2687 | case CCISS_REGNEWD: | |
a08a8471 | 2688 | hpsa_scan_start(h->scsi_host); |
edd16368 SC |
2689 | return 0; |
2690 | case CCISS_GETPCIINFO: | |
2691 | return hpsa_getpciinfo_ioctl(h, argp); | |
2692 | case CCISS_GETDRIVVER: | |
2693 | return hpsa_getdrivver_ioctl(h, argp); | |
2694 | case CCISS_PASSTHRU: | |
2695 | return hpsa_passthru_ioctl(h, argp); | |
2696 | case CCISS_BIG_PASSTHRU: | |
2697 | return hpsa_big_passthru_ioctl(h, argp); | |
2698 | default: | |
2699 | return -ENOTTY; | |
2700 | } | |
2701 | } | |
2702 | ||
01a02ffc SC |
2703 | static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, |
2704 | void *buff, size_t size, u8 page_code, unsigned char *scsi3addr, | |
edd16368 SC |
2705 | int cmd_type) |
2706 | { | |
2707 | int pci_dir = XFER_NONE; | |
2708 | ||
2709 | c->cmd_type = CMD_IOCTL_PEND; | |
2710 | c->Header.ReplyQueue = 0; | |
2711 | if (buff != NULL && size > 0) { | |
2712 | c->Header.SGList = 1; | |
2713 | c->Header.SGTotal = 1; | |
2714 | } else { | |
2715 | c->Header.SGList = 0; | |
2716 | c->Header.SGTotal = 0; | |
2717 | } | |
2718 | c->Header.Tag.lower = c->busaddr; | |
2719 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); | |
2720 | ||
2721 | c->Request.Type.Type = cmd_type; | |
2722 | if (cmd_type == TYPE_CMD) { | |
2723 | switch (cmd) { | |
2724 | case HPSA_INQUIRY: | |
2725 | /* are we trying to read a vital product page */ | |
2726 | if (page_code != 0) { | |
2727 | c->Request.CDB[1] = 0x01; | |
2728 | c->Request.CDB[2] = page_code; | |
2729 | } | |
2730 | c->Request.CDBLen = 6; | |
2731 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2732 | c->Request.Type.Direction = XFER_READ; | |
2733 | c->Request.Timeout = 0; | |
2734 | c->Request.CDB[0] = HPSA_INQUIRY; | |
2735 | c->Request.CDB[4] = size & 0xFF; | |
2736 | break; | |
2737 | case HPSA_REPORT_LOG: | |
2738 | case HPSA_REPORT_PHYS: | |
2739 | /* Talking to controller so It's a physical command | |
2740 | mode = 00 target = 0. Nothing to write. | |
2741 | */ | |
2742 | c->Request.CDBLen = 12; | |
2743 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2744 | c->Request.Type.Direction = XFER_READ; | |
2745 | c->Request.Timeout = 0; | |
2746 | c->Request.CDB[0] = cmd; | |
2747 | c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ | |
2748 | c->Request.CDB[7] = (size >> 16) & 0xFF; | |
2749 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
2750 | c->Request.CDB[9] = size & 0xFF; | |
2751 | break; | |
edd16368 SC |
2752 | case HPSA_CACHE_FLUSH: |
2753 | c->Request.CDBLen = 12; | |
2754 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2755 | c->Request.Type.Direction = XFER_WRITE; | |
2756 | c->Request.Timeout = 0; | |
2757 | c->Request.CDB[0] = BMIC_WRITE; | |
2758 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
2759 | break; | |
2760 | case TEST_UNIT_READY: | |
2761 | c->Request.CDBLen = 6; | |
2762 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2763 | c->Request.Type.Direction = XFER_NONE; | |
2764 | c->Request.Timeout = 0; | |
2765 | break; | |
2766 | default: | |
2767 | dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd); | |
2768 | BUG(); | |
2769 | return; | |
2770 | } | |
2771 | } else if (cmd_type == TYPE_MSG) { | |
2772 | switch (cmd) { | |
2773 | ||
2774 | case HPSA_DEVICE_RESET_MSG: | |
2775 | c->Request.CDBLen = 16; | |
2776 | c->Request.Type.Type = 1; /* It is a MSG not a CMD */ | |
2777 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2778 | c->Request.Type.Direction = XFER_NONE; | |
2779 | c->Request.Timeout = 0; /* Don't time out */ | |
2780 | c->Request.CDB[0] = 0x01; /* RESET_MSG is 0x01 */ | |
2781 | c->Request.CDB[1] = 0x03; /* Reset target above */ | |
2782 | /* If bytes 4-7 are zero, it means reset the */ | |
2783 | /* LunID device */ | |
2784 | c->Request.CDB[4] = 0x00; | |
2785 | c->Request.CDB[5] = 0x00; | |
2786 | c->Request.CDB[6] = 0x00; | |
2787 | c->Request.CDB[7] = 0x00; | |
2788 | break; | |
2789 | ||
2790 | default: | |
2791 | dev_warn(&h->pdev->dev, "unknown message type %d\n", | |
2792 | cmd); | |
2793 | BUG(); | |
2794 | } | |
2795 | } else { | |
2796 | dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type); | |
2797 | BUG(); | |
2798 | } | |
2799 | ||
2800 | switch (c->Request.Type.Direction) { | |
2801 | case XFER_READ: | |
2802 | pci_dir = PCI_DMA_FROMDEVICE; | |
2803 | break; | |
2804 | case XFER_WRITE: | |
2805 | pci_dir = PCI_DMA_TODEVICE; | |
2806 | break; | |
2807 | case XFER_NONE: | |
2808 | pci_dir = PCI_DMA_NONE; | |
2809 | break; | |
2810 | default: | |
2811 | pci_dir = PCI_DMA_BIDIRECTIONAL; | |
2812 | } | |
2813 | ||
2814 | hpsa_map_one(h->pdev, c, buff, size, pci_dir); | |
2815 | ||
2816 | return; | |
2817 | } | |
2818 | ||
2819 | /* | |
2820 | * Map (physical) PCI mem into (virtual) kernel space | |
2821 | */ | |
2822 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2823 | { | |
2824 | ulong page_base = ((ulong) base) & PAGE_MASK; | |
2825 | ulong page_offs = ((ulong) base) - page_base; | |
2826 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
2827 | ||
2828 | return page_remapped ? (page_remapped + page_offs) : NULL; | |
2829 | } | |
2830 | ||
2831 | /* Takes cmds off the submission queue and sends them to the hardware, | |
2832 | * then puts them on the queue of cmds waiting for completion. | |
2833 | */ | |
2834 | static void start_io(struct ctlr_info *h) | |
2835 | { | |
2836 | struct CommandList *c; | |
2837 | ||
2838 | while (!hlist_empty(&h->reqQ)) { | |
2839 | c = hlist_entry(h->reqQ.first, struct CommandList, list); | |
2840 | /* can't do anything if fifo is full */ | |
2841 | if ((h->access.fifo_full(h))) { | |
2842 | dev_warn(&h->pdev->dev, "fifo full\n"); | |
2843 | break; | |
2844 | } | |
2845 | ||
2846 | /* Get the first entry from the Request Q */ | |
2847 | removeQ(c); | |
2848 | h->Qdepth--; | |
2849 | ||
2850 | /* Tell the controller execute command */ | |
2851 | h->access.submit_command(h, c); | |
2852 | ||
2853 | /* Put job onto the completed Q */ | |
2854 | addQ(&h->cmpQ, c); | |
2855 | } | |
2856 | } | |
2857 | ||
2858 | static inline unsigned long get_next_completion(struct ctlr_info *h) | |
2859 | { | |
2860 | return h->access.command_completed(h); | |
2861 | } | |
2862 | ||
900c5440 | 2863 | static inline bool interrupt_pending(struct ctlr_info *h) |
edd16368 SC |
2864 | { |
2865 | return h->access.intr_pending(h); | |
2866 | } | |
2867 | ||
2868 | static inline long interrupt_not_for_us(struct ctlr_info *h) | |
2869 | { | |
10f66018 SC |
2870 | return (h->access.intr_pending(h) == 0) || |
2871 | (h->interrupts_enabled == 0); | |
edd16368 SC |
2872 | } |
2873 | ||
01a02ffc SC |
2874 | static inline int bad_tag(struct ctlr_info *h, u32 tag_index, |
2875 | u32 raw_tag) | |
edd16368 SC |
2876 | { |
2877 | if (unlikely(tag_index >= h->nr_cmds)) { | |
2878 | dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); | |
2879 | return 1; | |
2880 | } | |
2881 | return 0; | |
2882 | } | |
2883 | ||
01a02ffc | 2884 | static inline void finish_cmd(struct CommandList *c, u32 raw_tag) |
edd16368 SC |
2885 | { |
2886 | removeQ(c); | |
2887 | if (likely(c->cmd_type == CMD_SCSI)) | |
2888 | complete_scsi_command(c, 0, raw_tag); | |
2889 | else if (c->cmd_type == CMD_IOCTL_PEND) | |
2890 | complete(c->waiting); | |
2891 | } | |
2892 | ||
a104c99f SC |
2893 | static inline u32 hpsa_tag_contains_index(u32 tag) |
2894 | { | |
a104c99f SC |
2895 | return tag & DIRECT_LOOKUP_BIT; |
2896 | } | |
2897 | ||
2898 | static inline u32 hpsa_tag_to_index(u32 tag) | |
2899 | { | |
a104c99f SC |
2900 | return tag >> DIRECT_LOOKUP_SHIFT; |
2901 | } | |
2902 | ||
2903 | static inline u32 hpsa_tag_discard_error_bits(u32 tag) | |
2904 | { | |
2905 | #define HPSA_ERROR_BITS 0x03 | |
2906 | return tag & ~HPSA_ERROR_BITS; | |
2907 | } | |
2908 | ||
303932fd DB |
2909 | /* process completion of an indexed ("direct lookup") command */ |
2910 | static inline u32 process_indexed_cmd(struct ctlr_info *h, | |
2911 | u32 raw_tag) | |
2912 | { | |
2913 | u32 tag_index; | |
2914 | struct CommandList *c; | |
2915 | ||
2916 | tag_index = hpsa_tag_to_index(raw_tag); | |
2917 | if (bad_tag(h, tag_index, raw_tag)) | |
2918 | return next_command(h); | |
2919 | c = h->cmd_pool + tag_index; | |
2920 | finish_cmd(c, raw_tag); | |
2921 | return next_command(h); | |
2922 | } | |
2923 | ||
2924 | /* process completion of a non-indexed command */ | |
2925 | static inline u32 process_nonindexed_cmd(struct ctlr_info *h, | |
2926 | u32 raw_tag) | |
2927 | { | |
2928 | u32 tag; | |
2929 | struct CommandList *c = NULL; | |
2930 | struct hlist_node *tmp; | |
2931 | ||
2932 | tag = hpsa_tag_discard_error_bits(raw_tag); | |
2933 | hlist_for_each_entry(c, tmp, &h->cmpQ, list) { | |
2934 | if ((c->busaddr & 0xFFFFFFE0) == (tag & 0xFFFFFFE0)) { | |
2935 | finish_cmd(c, raw_tag); | |
2936 | return next_command(h); | |
2937 | } | |
2938 | } | |
2939 | bad_tag(h, h->nr_cmds + 1, raw_tag); | |
2940 | return next_command(h); | |
2941 | } | |
2942 | ||
10f66018 | 2943 | static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id) |
edd16368 SC |
2944 | { |
2945 | struct ctlr_info *h = dev_id; | |
edd16368 | 2946 | unsigned long flags; |
303932fd | 2947 | u32 raw_tag; |
edd16368 SC |
2948 | |
2949 | if (interrupt_not_for_us(h)) | |
2950 | return IRQ_NONE; | |
10f66018 SC |
2951 | spin_lock_irqsave(&h->lock, flags); |
2952 | while (interrupt_pending(h)) { | |
2953 | raw_tag = get_next_completion(h); | |
2954 | while (raw_tag != FIFO_EMPTY) { | |
2955 | if (hpsa_tag_contains_index(raw_tag)) | |
2956 | raw_tag = process_indexed_cmd(h, raw_tag); | |
2957 | else | |
2958 | raw_tag = process_nonindexed_cmd(h, raw_tag); | |
2959 | } | |
2960 | } | |
2961 | spin_unlock_irqrestore(&h->lock, flags); | |
2962 | return IRQ_HANDLED; | |
2963 | } | |
2964 | ||
2965 | static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id) | |
2966 | { | |
2967 | struct ctlr_info *h = dev_id; | |
2968 | unsigned long flags; | |
2969 | u32 raw_tag; | |
2970 | ||
edd16368 | 2971 | spin_lock_irqsave(&h->lock, flags); |
303932fd DB |
2972 | raw_tag = get_next_completion(h); |
2973 | while (raw_tag != FIFO_EMPTY) { | |
2974 | if (hpsa_tag_contains_index(raw_tag)) | |
2975 | raw_tag = process_indexed_cmd(h, raw_tag); | |
2976 | else | |
2977 | raw_tag = process_nonindexed_cmd(h, raw_tag); | |
edd16368 SC |
2978 | } |
2979 | spin_unlock_irqrestore(&h->lock, flags); | |
2980 | return IRQ_HANDLED; | |
2981 | } | |
2982 | ||
f0edafc6 | 2983 | /* Send a message CDB to the firmware. */ |
edd16368 SC |
2984 | static __devinit int hpsa_message(struct pci_dev *pdev, unsigned char opcode, |
2985 | unsigned char type) | |
2986 | { | |
2987 | struct Command { | |
2988 | struct CommandListHeader CommandHeader; | |
2989 | struct RequestBlock Request; | |
2990 | struct ErrDescriptor ErrorDescriptor; | |
2991 | }; | |
2992 | struct Command *cmd; | |
2993 | static const size_t cmd_sz = sizeof(*cmd) + | |
2994 | sizeof(cmd->ErrorDescriptor); | |
2995 | dma_addr_t paddr64; | |
2996 | uint32_t paddr32, tag; | |
2997 | void __iomem *vaddr; | |
2998 | int i, err; | |
2999 | ||
3000 | vaddr = pci_ioremap_bar(pdev, 0); | |
3001 | if (vaddr == NULL) | |
3002 | return -ENOMEM; | |
3003 | ||
3004 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the | |
3005 | * CCISS commands, so they must be allocated from the lower 4GiB of | |
3006 | * memory. | |
3007 | */ | |
3008 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); | |
3009 | if (err) { | |
3010 | iounmap(vaddr); | |
3011 | return -ENOMEM; | |
3012 | } | |
3013 | ||
3014 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); | |
3015 | if (cmd == NULL) { | |
3016 | iounmap(vaddr); | |
3017 | return -ENOMEM; | |
3018 | } | |
3019 | ||
3020 | /* This must fit, because of the 32-bit consistent DMA mask. Also, | |
3021 | * although there's no guarantee, we assume that the address is at | |
3022 | * least 4-byte aligned (most likely, it's page-aligned). | |
3023 | */ | |
3024 | paddr32 = paddr64; | |
3025 | ||
3026 | cmd->CommandHeader.ReplyQueue = 0; | |
3027 | cmd->CommandHeader.SGList = 0; | |
3028 | cmd->CommandHeader.SGTotal = 0; | |
3029 | cmd->CommandHeader.Tag.lower = paddr32; | |
3030 | cmd->CommandHeader.Tag.upper = 0; | |
3031 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); | |
3032 | ||
3033 | cmd->Request.CDBLen = 16; | |
3034 | cmd->Request.Type.Type = TYPE_MSG; | |
3035 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; | |
3036 | cmd->Request.Type.Direction = XFER_NONE; | |
3037 | cmd->Request.Timeout = 0; /* Don't time out */ | |
3038 | cmd->Request.CDB[0] = opcode; | |
3039 | cmd->Request.CDB[1] = type; | |
3040 | memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */ | |
3041 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(*cmd); | |
3042 | cmd->ErrorDescriptor.Addr.upper = 0; | |
3043 | cmd->ErrorDescriptor.Len = sizeof(struct ErrorInfo); | |
3044 | ||
3045 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); | |
3046 | ||
3047 | for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) { | |
3048 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); | |
a104c99f | 3049 | if (hpsa_tag_discard_error_bits(tag) == paddr32) |
edd16368 SC |
3050 | break; |
3051 | msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS); | |
3052 | } | |
3053 | ||
3054 | iounmap(vaddr); | |
3055 | ||
3056 | /* we leak the DMA buffer here ... no choice since the controller could | |
3057 | * still complete the command. | |
3058 | */ | |
3059 | if (i == HPSA_MSG_SEND_RETRY_LIMIT) { | |
3060 | dev_err(&pdev->dev, "controller message %02x:%02x timed out\n", | |
3061 | opcode, type); | |
3062 | return -ETIMEDOUT; | |
3063 | } | |
3064 | ||
3065 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); | |
3066 | ||
3067 | if (tag & HPSA_ERROR_BIT) { | |
3068 | dev_err(&pdev->dev, "controller message %02x:%02x failed\n", | |
3069 | opcode, type); | |
3070 | return -EIO; | |
3071 | } | |
3072 | ||
3073 | dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n", | |
3074 | opcode, type); | |
3075 | return 0; | |
3076 | } | |
3077 | ||
3078 | #define hpsa_soft_reset_controller(p) hpsa_message(p, 1, 0) | |
3079 | #define hpsa_noop(p) hpsa_message(p, 3, 0) | |
3080 | ||
1df8552a SC |
3081 | static int hpsa_controller_hard_reset(struct pci_dev *pdev, |
3082 | void * __iomem vaddr, bool use_doorbell) | |
3083 | { | |
3084 | u16 pmcsr; | |
3085 | int pos; | |
3086 | ||
3087 | if (use_doorbell) { | |
3088 | /* For everything after the P600, the PCI power state method | |
3089 | * of resetting the controller doesn't work, so we have this | |
3090 | * other way using the doorbell register. | |
3091 | */ | |
3092 | dev_info(&pdev->dev, "using doorbell to reset controller\n"); | |
3093 | writel(DOORBELL_CTLR_RESET, vaddr + SA5_DOORBELL); | |
3094 | msleep(1000); | |
3095 | } else { /* Try to do it the PCI power state way */ | |
3096 | ||
3097 | /* Quoting from the Open CISS Specification: "The Power | |
3098 | * Management Control/Status Register (CSR) controls the power | |
3099 | * state of the device. The normal operating state is D0, | |
3100 | * CSR=00h. The software off state is D3, CSR=03h. To reset | |
3101 | * the controller, place the interface device in D3 then to D0, | |
3102 | * this causes a secondary PCI reset which will reset the | |
3103 | * controller." */ | |
3104 | ||
3105 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); | |
3106 | if (pos == 0) { | |
3107 | dev_err(&pdev->dev, | |
3108 | "hpsa_reset_controller: " | |
3109 | "PCI PM not supported\n"); | |
3110 | return -ENODEV; | |
3111 | } | |
3112 | dev_info(&pdev->dev, "using PCI PM to reset controller\n"); | |
3113 | /* enter the D3hot power management state */ | |
3114 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); | |
3115 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
3116 | pmcsr |= PCI_D3hot; | |
3117 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
3118 | ||
3119 | msleep(500); | |
3120 | ||
3121 | /* enter the D0 power management state */ | |
3122 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
3123 | pmcsr |= PCI_D0; | |
3124 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
3125 | ||
3126 | msleep(500); | |
3127 | } | |
3128 | return 0; | |
3129 | } | |
3130 | ||
edd16368 | 3131 | /* This does a hard reset of the controller using PCI power management |
1df8552a | 3132 | * states or the using the doorbell register. |
edd16368 | 3133 | */ |
1df8552a | 3134 | static __devinit int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev) |
edd16368 | 3135 | { |
1df8552a SC |
3136 | u64 cfg_offset; |
3137 | u32 cfg_base_addr; | |
3138 | u64 cfg_base_addr_index; | |
3139 | void __iomem *vaddr; | |
3140 | unsigned long paddr; | |
3141 | u32 misc_fw_support, active_transport; | |
270d05de | 3142 | int rc; |
1df8552a SC |
3143 | struct CfgTable __iomem *cfgtable; |
3144 | bool use_doorbell; | |
18867659 | 3145 | u32 board_id; |
270d05de | 3146 | u16 command_register; |
edd16368 | 3147 | |
1df8552a SC |
3148 | /* For controllers as old as the P600, this is very nearly |
3149 | * the same thing as | |
edd16368 SC |
3150 | * |
3151 | * pci_save_state(pci_dev); | |
3152 | * pci_set_power_state(pci_dev, PCI_D3hot); | |
3153 | * pci_set_power_state(pci_dev, PCI_D0); | |
3154 | * pci_restore_state(pci_dev); | |
3155 | * | |
1df8552a SC |
3156 | * For controllers newer than the P600, the pci power state |
3157 | * method of resetting doesn't work so we have another way | |
3158 | * using the doorbell register. | |
edd16368 | 3159 | */ |
18867659 SC |
3160 | |
3161 | /* Exclude 640x boards. These are two pci devices in one slot | |
3162 | * which share a battery backed cache module. One controls the | |
3163 | * cache, the other accesses the cache through the one that controls | |
3164 | * it. If we reset the one controlling the cache, the other will | |
3165 | * likely not be happy. Just forbid resetting this conjoined mess. | |
3166 | * The 640x isn't really supported by hpsa anyway. | |
3167 | */ | |
25c1e56a SC |
3168 | rc = hpsa_lookup_board_id(pdev, &board_id); |
3169 | if (rc < 0) { | |
3170 | dev_warn(&pdev->dev, "Not resetting device.\n"); | |
3171 | return -ENODEV; | |
3172 | } | |
18867659 SC |
3173 | if (board_id == 0x409C0E11 || board_id == 0x409D0E11) |
3174 | return -ENOTSUPP; | |
3175 | ||
270d05de SC |
3176 | /* Save the PCI command register */ |
3177 | pci_read_config_word(pdev, 4, &command_register); | |
3178 | /* Turn the board off. This is so that later pci_restore_state() | |
3179 | * won't turn the board on before the rest of config space is ready. | |
3180 | */ | |
3181 | pci_disable_device(pdev); | |
3182 | pci_save_state(pdev); | |
edd16368 | 3183 | |
1df8552a SC |
3184 | /* find the first memory BAR, so we can find the cfg table */ |
3185 | rc = hpsa_pci_find_memory_BAR(pdev, &paddr); | |
3186 | if (rc) | |
3187 | return rc; | |
3188 | vaddr = remap_pci_mem(paddr, 0x250); | |
3189 | if (!vaddr) | |
3190 | return -ENOMEM; | |
edd16368 | 3191 | |
1df8552a SC |
3192 | /* find cfgtable in order to check if reset via doorbell is supported */ |
3193 | rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr, | |
3194 | &cfg_base_addr_index, &cfg_offset); | |
3195 | if (rc) | |
3196 | goto unmap_vaddr; | |
3197 | cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
3198 | cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable)); | |
3199 | if (!cfgtable) { | |
3200 | rc = -ENOMEM; | |
3201 | goto unmap_vaddr; | |
3202 | } | |
edd16368 | 3203 | |
1df8552a SC |
3204 | /* If reset via doorbell register is supported, use that. */ |
3205 | misc_fw_support = readl(&cfgtable->misc_fw_support); | |
3206 | use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET; | |
edd16368 | 3207 | |
1df8552a SC |
3208 | rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell); |
3209 | if (rc) | |
3210 | goto unmap_cfgtable; | |
edd16368 | 3211 | |
270d05de SC |
3212 | pci_restore_state(pdev); |
3213 | rc = pci_enable_device(pdev); | |
3214 | if (rc) { | |
3215 | dev_warn(&pdev->dev, "failed to enable device.\n"); | |
3216 | goto unmap_cfgtable; | |
edd16368 | 3217 | } |
270d05de | 3218 | pci_write_config_word(pdev, 4, command_register); |
edd16368 | 3219 | |
1df8552a SC |
3220 | /* Some devices (notably the HP Smart Array 5i Controller) |
3221 | need a little pause here */ | |
3222 | msleep(HPSA_POST_RESET_PAUSE_MSECS); | |
3223 | ||
fe5389c8 SC |
3224 | /* Wait for board to become not ready, then ready. */ |
3225 | dev_info(&pdev->dev, "Waiting for board to become ready.\n"); | |
3226 | rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_NOT_READY); | |
3227 | if (rc) | |
3228 | dev_warn(&pdev->dev, | |
3229 | "failed waiting for board to become not ready\n"); | |
3230 | rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY); | |
3231 | if (rc) { | |
3232 | dev_warn(&pdev->dev, | |
3233 | "failed waiting for board to become ready\n"); | |
3234 | goto unmap_cfgtable; | |
3235 | } | |
3236 | dev_info(&pdev->dev, "board ready.\n"); | |
3237 | ||
1df8552a SC |
3238 | /* Controller should be in simple mode at this point. If it's not, |
3239 | * It means we're on one of those controllers which doesn't support | |
3240 | * the doorbell reset method and on which the PCI power management reset | |
3241 | * method doesn't work (P800, for example.) | |
3242 | * In those cases, pretend the reset worked and hope for the best. | |
3243 | */ | |
3244 | active_transport = readl(&cfgtable->TransportActive); | |
3245 | if (active_transport & PERFORMANT_MODE) { | |
3246 | dev_warn(&pdev->dev, "Unable to successfully reset controller," | |
3247 | " proceeding anyway.\n"); | |
3248 | rc = -ENOTSUPP; | |
3249 | } | |
3250 | ||
3251 | unmap_cfgtable: | |
3252 | iounmap(cfgtable); | |
3253 | ||
3254 | unmap_vaddr: | |
3255 | iounmap(vaddr); | |
3256 | return rc; | |
edd16368 SC |
3257 | } |
3258 | ||
3259 | /* | |
3260 | * We cannot read the structure directly, for portability we must use | |
3261 | * the io functions. | |
3262 | * This is for debug only. | |
3263 | */ | |
edd16368 SC |
3264 | static void print_cfg_table(struct device *dev, struct CfgTable *tb) |
3265 | { | |
58f8665c | 3266 | #ifdef HPSA_DEBUG |
edd16368 SC |
3267 | int i; |
3268 | char temp_name[17]; | |
3269 | ||
3270 | dev_info(dev, "Controller Configuration information\n"); | |
3271 | dev_info(dev, "------------------------------------\n"); | |
3272 | for (i = 0; i < 4; i++) | |
3273 | temp_name[i] = readb(&(tb->Signature[i])); | |
3274 | temp_name[4] = '\0'; | |
3275 | dev_info(dev, " Signature = %s\n", temp_name); | |
3276 | dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence))); | |
3277 | dev_info(dev, " Transport methods supported = 0x%x\n", | |
3278 | readl(&(tb->TransportSupport))); | |
3279 | dev_info(dev, " Transport methods active = 0x%x\n", | |
3280 | readl(&(tb->TransportActive))); | |
3281 | dev_info(dev, " Requested transport Method = 0x%x\n", | |
3282 | readl(&(tb->HostWrite.TransportRequest))); | |
3283 | dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n", | |
3284 | readl(&(tb->HostWrite.CoalIntDelay))); | |
3285 | dev_info(dev, " Coalesce Interrupt Count = 0x%x\n", | |
3286 | readl(&(tb->HostWrite.CoalIntCount))); | |
3287 | dev_info(dev, " Max outstanding commands = 0x%d\n", | |
3288 | readl(&(tb->CmdsOutMax))); | |
3289 | dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
3290 | for (i = 0; i < 16; i++) | |
3291 | temp_name[i] = readb(&(tb->ServerName[i])); | |
3292 | temp_name[16] = '\0'; | |
3293 | dev_info(dev, " Server Name = %s\n", temp_name); | |
3294 | dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n", | |
3295 | readl(&(tb->HeartBeat))); | |
edd16368 | 3296 | #endif /* HPSA_DEBUG */ |
58f8665c | 3297 | } |
edd16368 SC |
3298 | |
3299 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) | |
3300 | { | |
3301 | int i, offset, mem_type, bar_type; | |
3302 | ||
3303 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ | |
3304 | return 0; | |
3305 | offset = 0; | |
3306 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { | |
3307 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
3308 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) | |
3309 | offset += 4; | |
3310 | else { | |
3311 | mem_type = pci_resource_flags(pdev, i) & | |
3312 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; | |
3313 | switch (mem_type) { | |
3314 | case PCI_BASE_ADDRESS_MEM_TYPE_32: | |
3315 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
3316 | offset += 4; /* 32 bit */ | |
3317 | break; | |
3318 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
3319 | offset += 8; | |
3320 | break; | |
3321 | default: /* reserved in PCI 2.2 */ | |
3322 | dev_warn(&pdev->dev, | |
3323 | "base address is invalid\n"); | |
3324 | return -1; | |
3325 | break; | |
3326 | } | |
3327 | } | |
3328 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) | |
3329 | return i + 1; | |
3330 | } | |
3331 | return -1; | |
3332 | } | |
3333 | ||
3334 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on | |
3335 | * controllers that are capable. If not, we use IO-APIC mode. | |
3336 | */ | |
3337 | ||
6b3f4c52 | 3338 | static void __devinit hpsa_interrupt_mode(struct ctlr_info *h) |
edd16368 SC |
3339 | { |
3340 | #ifdef CONFIG_PCI_MSI | |
3341 | int err; | |
3342 | struct msix_entry hpsa_msix_entries[4] = { {0, 0}, {0, 1}, | |
3343 | {0, 2}, {0, 3} | |
3344 | }; | |
3345 | ||
3346 | /* Some boards advertise MSI but don't really support it */ | |
6b3f4c52 SC |
3347 | if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) || |
3348 | (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11)) | |
edd16368 | 3349 | goto default_int_mode; |
55c06c71 SC |
3350 | if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) { |
3351 | dev_info(&h->pdev->dev, "MSIX\n"); | |
3352 | err = pci_enable_msix(h->pdev, hpsa_msix_entries, 4); | |
edd16368 SC |
3353 | if (!err) { |
3354 | h->intr[0] = hpsa_msix_entries[0].vector; | |
3355 | h->intr[1] = hpsa_msix_entries[1].vector; | |
3356 | h->intr[2] = hpsa_msix_entries[2].vector; | |
3357 | h->intr[3] = hpsa_msix_entries[3].vector; | |
3358 | h->msix_vector = 1; | |
3359 | return; | |
3360 | } | |
3361 | if (err > 0) { | |
55c06c71 | 3362 | dev_warn(&h->pdev->dev, "only %d MSI-X vectors " |
edd16368 SC |
3363 | "available\n", err); |
3364 | goto default_int_mode; | |
3365 | } else { | |
55c06c71 | 3366 | dev_warn(&h->pdev->dev, "MSI-X init failed %d\n", |
edd16368 SC |
3367 | err); |
3368 | goto default_int_mode; | |
3369 | } | |
3370 | } | |
55c06c71 SC |
3371 | if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) { |
3372 | dev_info(&h->pdev->dev, "MSI\n"); | |
3373 | if (!pci_enable_msi(h->pdev)) | |
edd16368 SC |
3374 | h->msi_vector = 1; |
3375 | else | |
55c06c71 | 3376 | dev_warn(&h->pdev->dev, "MSI init failed\n"); |
edd16368 SC |
3377 | } |
3378 | default_int_mode: | |
3379 | #endif /* CONFIG_PCI_MSI */ | |
3380 | /* if we get here we're going to use the default interrupt mode */ | |
55c06c71 | 3381 | h->intr[PERF_MODE_INT] = h->pdev->irq; |
edd16368 SC |
3382 | } |
3383 | ||
e5c880d1 SC |
3384 | static int __devinit hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id) |
3385 | { | |
3386 | int i; | |
3387 | u32 subsystem_vendor_id, subsystem_device_id; | |
3388 | ||
3389 | subsystem_vendor_id = pdev->subsystem_vendor; | |
3390 | subsystem_device_id = pdev->subsystem_device; | |
3391 | *board_id = ((subsystem_device_id << 16) & 0xffff0000) | | |
3392 | subsystem_vendor_id; | |
3393 | ||
3394 | for (i = 0; i < ARRAY_SIZE(products); i++) | |
3395 | if (*board_id == products[i].board_id) | |
3396 | return i; | |
3397 | ||
6798cc0a SC |
3398 | if ((subsystem_vendor_id != PCI_VENDOR_ID_HP && |
3399 | subsystem_vendor_id != PCI_VENDOR_ID_COMPAQ) || | |
3400 | !hpsa_allow_any) { | |
e5c880d1 SC |
3401 | dev_warn(&pdev->dev, "unrecognized board ID: " |
3402 | "0x%08x, ignoring.\n", *board_id); | |
3403 | return -ENODEV; | |
3404 | } | |
3405 | return ARRAY_SIZE(products) - 1; /* generic unknown smart array */ | |
3406 | } | |
3407 | ||
85bdbabb SC |
3408 | static inline bool hpsa_board_disabled(struct pci_dev *pdev) |
3409 | { | |
3410 | u16 command; | |
3411 | ||
3412 | (void) pci_read_config_word(pdev, PCI_COMMAND, &command); | |
3413 | return ((command & PCI_COMMAND_MEMORY) == 0); | |
3414 | } | |
3415 | ||
12d2cd47 | 3416 | static int __devinit hpsa_pci_find_memory_BAR(struct pci_dev *pdev, |
3a7774ce SC |
3417 | unsigned long *memory_bar) |
3418 | { | |
3419 | int i; | |
3420 | ||
3421 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) | |
12d2cd47 | 3422 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { |
3a7774ce | 3423 | /* addressing mode bits already removed */ |
12d2cd47 SC |
3424 | *memory_bar = pci_resource_start(pdev, i); |
3425 | dev_dbg(&pdev->dev, "memory BAR = %lx\n", | |
3a7774ce SC |
3426 | *memory_bar); |
3427 | return 0; | |
3428 | } | |
12d2cd47 | 3429 | dev_warn(&pdev->dev, "no memory BAR found\n"); |
3a7774ce SC |
3430 | return -ENODEV; |
3431 | } | |
3432 | ||
fe5389c8 SC |
3433 | static int __devinit hpsa_wait_for_board_state(struct pci_dev *pdev, |
3434 | void __iomem *vaddr, int wait_for_ready) | |
2c4c8c8b | 3435 | { |
fe5389c8 | 3436 | int i, iterations; |
2c4c8c8b | 3437 | u32 scratchpad; |
fe5389c8 SC |
3438 | if (wait_for_ready) |
3439 | iterations = HPSA_BOARD_READY_ITERATIONS; | |
3440 | else | |
3441 | iterations = HPSA_BOARD_NOT_READY_ITERATIONS; | |
2c4c8c8b | 3442 | |
fe5389c8 SC |
3443 | for (i = 0; i < iterations; i++) { |
3444 | scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET); | |
3445 | if (wait_for_ready) { | |
3446 | if (scratchpad == HPSA_FIRMWARE_READY) | |
3447 | return 0; | |
3448 | } else { | |
3449 | if (scratchpad != HPSA_FIRMWARE_READY) | |
3450 | return 0; | |
3451 | } | |
2c4c8c8b SC |
3452 | msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS); |
3453 | } | |
fe5389c8 | 3454 | dev_warn(&pdev->dev, "board not ready, timed out.\n"); |
2c4c8c8b SC |
3455 | return -ENODEV; |
3456 | } | |
3457 | ||
a51fd47f SC |
3458 | static int __devinit hpsa_find_cfg_addrs(struct pci_dev *pdev, |
3459 | void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, | |
3460 | u64 *cfg_offset) | |
3461 | { | |
3462 | *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET); | |
3463 | *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET); | |
3464 | *cfg_base_addr &= (u32) 0x0000ffff; | |
3465 | *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr); | |
3466 | if (*cfg_base_addr_index == -1) { | |
3467 | dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n"); | |
3468 | return -ENODEV; | |
3469 | } | |
3470 | return 0; | |
3471 | } | |
3472 | ||
77c4495c | 3473 | static int __devinit hpsa_find_cfgtables(struct ctlr_info *h) |
edd16368 | 3474 | { |
01a02ffc SC |
3475 | u64 cfg_offset; |
3476 | u32 cfg_base_addr; | |
3477 | u64 cfg_base_addr_index; | |
303932fd | 3478 | u32 trans_offset; |
a51fd47f | 3479 | int rc; |
77c4495c | 3480 | |
a51fd47f SC |
3481 | rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr, |
3482 | &cfg_base_addr_index, &cfg_offset); | |
3483 | if (rc) | |
3484 | return rc; | |
77c4495c | 3485 | h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev, |
a51fd47f | 3486 | cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable)); |
77c4495c SC |
3487 | if (!h->cfgtable) |
3488 | return -ENOMEM; | |
3489 | /* Find performant mode table. */ | |
a51fd47f | 3490 | trans_offset = readl(&h->cfgtable->TransMethodOffset); |
77c4495c SC |
3491 | h->transtable = remap_pci_mem(pci_resource_start(h->pdev, |
3492 | cfg_base_addr_index)+cfg_offset+trans_offset, | |
3493 | sizeof(*h->transtable)); | |
3494 | if (!h->transtable) | |
3495 | return -ENOMEM; | |
3496 | return 0; | |
3497 | } | |
3498 | ||
cba3d38b SC |
3499 | static void __devinit hpsa_get_max_perf_mode_cmds(struct ctlr_info *h) |
3500 | { | |
3501 | h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); | |
72ceeaec SC |
3502 | |
3503 | /* Limit commands in memory limited kdump scenario. */ | |
3504 | if (reset_devices && h->max_commands > 32) | |
3505 | h->max_commands = 32; | |
3506 | ||
cba3d38b SC |
3507 | if (h->max_commands < 16) { |
3508 | dev_warn(&h->pdev->dev, "Controller reports " | |
3509 | "max supported commands of %d, an obvious lie. " | |
3510 | "Using 16. Ensure that firmware is up to date.\n", | |
3511 | h->max_commands); | |
3512 | h->max_commands = 16; | |
3513 | } | |
3514 | } | |
3515 | ||
b93d7536 SC |
3516 | /* Interrogate the hardware for some limits: |
3517 | * max commands, max SG elements without chaining, and with chaining, | |
3518 | * SG chain block size, etc. | |
3519 | */ | |
3520 | static void __devinit hpsa_find_board_params(struct ctlr_info *h) | |
3521 | { | |
cba3d38b | 3522 | hpsa_get_max_perf_mode_cmds(h); |
b93d7536 SC |
3523 | h->nr_cmds = h->max_commands - 4; /* Allow room for some ioctls */ |
3524 | h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements)); | |
3525 | /* | |
3526 | * Limit in-command s/g elements to 32 save dma'able memory. | |
3527 | * Howvever spec says if 0, use 31 | |
3528 | */ | |
3529 | h->max_cmd_sg_entries = 31; | |
3530 | if (h->maxsgentries > 512) { | |
3531 | h->max_cmd_sg_entries = 32; | |
3532 | h->chainsize = h->maxsgentries - h->max_cmd_sg_entries + 1; | |
3533 | h->maxsgentries--; /* save one for chain pointer */ | |
3534 | } else { | |
3535 | h->maxsgentries = 31; /* default to traditional values */ | |
3536 | h->chainsize = 0; | |
3537 | } | |
3538 | } | |
3539 | ||
76c46e49 SC |
3540 | static inline bool hpsa_CISS_signature_present(struct ctlr_info *h) |
3541 | { | |
3542 | if ((readb(&h->cfgtable->Signature[0]) != 'C') || | |
3543 | (readb(&h->cfgtable->Signature[1]) != 'I') || | |
3544 | (readb(&h->cfgtable->Signature[2]) != 'S') || | |
3545 | (readb(&h->cfgtable->Signature[3]) != 'S')) { | |
3546 | dev_warn(&h->pdev->dev, "not a valid CISS config table\n"); | |
3547 | return false; | |
3548 | } | |
3549 | return true; | |
3550 | } | |
3551 | ||
f7c39101 SC |
3552 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ |
3553 | static inline void hpsa_enable_scsi_prefetch(struct ctlr_info *h) | |
3554 | { | |
3555 | #ifdef CONFIG_X86 | |
3556 | u32 prefetch; | |
3557 | ||
3558 | prefetch = readl(&(h->cfgtable->SCSI_Prefetch)); | |
3559 | prefetch |= 0x100; | |
3560 | writel(prefetch, &(h->cfgtable->SCSI_Prefetch)); | |
3561 | #endif | |
3562 | } | |
3563 | ||
3d0eab67 SC |
3564 | /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result |
3565 | * in a prefetch beyond physical memory. | |
3566 | */ | |
3567 | static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h) | |
3568 | { | |
3569 | u32 dma_prefetch; | |
3570 | ||
3571 | if (h->board_id != 0x3225103C) | |
3572 | return; | |
3573 | dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG); | |
3574 | dma_prefetch |= 0x8000; | |
3575 | writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG); | |
3576 | } | |
3577 | ||
3f4336f3 | 3578 | static void __devinit hpsa_wait_for_mode_change_ack(struct ctlr_info *h) |
eb6b2ae9 SC |
3579 | { |
3580 | int i; | |
6eaf46fd SC |
3581 | u32 doorbell_value; |
3582 | unsigned long flags; | |
eb6b2ae9 SC |
3583 | |
3584 | /* under certain very rare conditions, this can take awhile. | |
3585 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
3586 | * as we enter this code.) | |
3587 | */ | |
3588 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { | |
6eaf46fd SC |
3589 | spin_lock_irqsave(&h->lock, flags); |
3590 | doorbell_value = readl(h->vaddr + SA5_DOORBELL); | |
3591 | spin_unlock_irqrestore(&h->lock, flags); | |
3592 | if (!doorbell_value & CFGTBL_ChangeReq) | |
eb6b2ae9 SC |
3593 | break; |
3594 | /* delay and try again */ | |
60d3f5b0 | 3595 | usleep_range(10000, 20000); |
eb6b2ae9 | 3596 | } |
3f4336f3 SC |
3597 | } |
3598 | ||
3599 | static int __devinit hpsa_enter_simple_mode(struct ctlr_info *h) | |
3600 | { | |
3601 | u32 trans_support; | |
3602 | ||
3603 | trans_support = readl(&(h->cfgtable->TransportSupport)); | |
3604 | if (!(trans_support & SIMPLE_MODE)) | |
3605 | return -ENOTSUPP; | |
3606 | ||
3607 | h->max_commands = readl(&(h->cfgtable->CmdsOutMax)); | |
3608 | /* Update the field, and then ring the doorbell */ | |
3609 | writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest)); | |
3610 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); | |
3611 | hpsa_wait_for_mode_change_ack(h); | |
eb6b2ae9 | 3612 | print_cfg_table(&h->pdev->dev, h->cfgtable); |
eb6b2ae9 SC |
3613 | if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
3614 | dev_warn(&h->pdev->dev, | |
3615 | "unable to get board into simple mode\n"); | |
3616 | return -ENODEV; | |
3617 | } | |
3618 | return 0; | |
3619 | } | |
3620 | ||
77c4495c SC |
3621 | static int __devinit hpsa_pci_init(struct ctlr_info *h) |
3622 | { | |
eb6b2ae9 | 3623 | int prod_index, err; |
edd16368 | 3624 | |
e5c880d1 SC |
3625 | prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id); |
3626 | if (prod_index < 0) | |
3627 | return -ENODEV; | |
3628 | h->product_name = products[prod_index].product_name; | |
3629 | h->access = *(products[prod_index].access); | |
edd16368 | 3630 | |
85bdbabb | 3631 | if (hpsa_board_disabled(h->pdev)) { |
55c06c71 | 3632 | dev_warn(&h->pdev->dev, "controller appears to be disabled\n"); |
edd16368 SC |
3633 | return -ENODEV; |
3634 | } | |
55c06c71 | 3635 | err = pci_enable_device(h->pdev); |
edd16368 | 3636 | if (err) { |
55c06c71 | 3637 | dev_warn(&h->pdev->dev, "unable to enable PCI device\n"); |
edd16368 SC |
3638 | return err; |
3639 | } | |
3640 | ||
55c06c71 | 3641 | err = pci_request_regions(h->pdev, "hpsa"); |
edd16368 | 3642 | if (err) { |
55c06c71 SC |
3643 | dev_err(&h->pdev->dev, |
3644 | "cannot obtain PCI resources, aborting\n"); | |
edd16368 SC |
3645 | return err; |
3646 | } | |
6b3f4c52 | 3647 | hpsa_interrupt_mode(h); |
12d2cd47 | 3648 | err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr); |
3a7774ce | 3649 | if (err) |
edd16368 | 3650 | goto err_out_free_res; |
edd16368 | 3651 | h->vaddr = remap_pci_mem(h->paddr, 0x250); |
204892e9 SC |
3652 | if (!h->vaddr) { |
3653 | err = -ENOMEM; | |
3654 | goto err_out_free_res; | |
3655 | } | |
fe5389c8 | 3656 | err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY); |
2c4c8c8b | 3657 | if (err) |
edd16368 | 3658 | goto err_out_free_res; |
77c4495c SC |
3659 | err = hpsa_find_cfgtables(h); |
3660 | if (err) | |
edd16368 | 3661 | goto err_out_free_res; |
b93d7536 | 3662 | hpsa_find_board_params(h); |
edd16368 | 3663 | |
76c46e49 | 3664 | if (!hpsa_CISS_signature_present(h)) { |
edd16368 SC |
3665 | err = -ENODEV; |
3666 | goto err_out_free_res; | |
3667 | } | |
f7c39101 | 3668 | hpsa_enable_scsi_prefetch(h); |
3d0eab67 | 3669 | hpsa_p600_dma_prefetch_quirk(h); |
eb6b2ae9 SC |
3670 | err = hpsa_enter_simple_mode(h); |
3671 | if (err) | |
edd16368 | 3672 | goto err_out_free_res; |
edd16368 SC |
3673 | return 0; |
3674 | ||
3675 | err_out_free_res: | |
204892e9 SC |
3676 | if (h->transtable) |
3677 | iounmap(h->transtable); | |
3678 | if (h->cfgtable) | |
3679 | iounmap(h->cfgtable); | |
3680 | if (h->vaddr) | |
3681 | iounmap(h->vaddr); | |
edd16368 SC |
3682 | /* |
3683 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3684 | * Smart Array controllers that pci_enable_device does not undo | |
3685 | */ | |
55c06c71 | 3686 | pci_release_regions(h->pdev); |
edd16368 SC |
3687 | return err; |
3688 | } | |
3689 | ||
339b2b14 SC |
3690 | static void __devinit hpsa_hba_inquiry(struct ctlr_info *h) |
3691 | { | |
3692 | int rc; | |
3693 | ||
3694 | #define HBA_INQUIRY_BYTE_COUNT 64 | |
3695 | h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL); | |
3696 | if (!h->hba_inquiry_data) | |
3697 | return; | |
3698 | rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0, | |
3699 | h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT); | |
3700 | if (rc != 0) { | |
3701 | kfree(h->hba_inquiry_data); | |
3702 | h->hba_inquiry_data = NULL; | |
3703 | } | |
3704 | } | |
3705 | ||
4c2a8c40 SC |
3706 | static __devinit int hpsa_init_reset_devices(struct pci_dev *pdev) |
3707 | { | |
1df8552a | 3708 | int rc, i; |
4c2a8c40 SC |
3709 | |
3710 | if (!reset_devices) | |
3711 | return 0; | |
3712 | ||
1df8552a SC |
3713 | /* Reset the controller with a PCI power-cycle or via doorbell */ |
3714 | rc = hpsa_kdump_hard_reset_controller(pdev); | |
4c2a8c40 | 3715 | |
1df8552a SC |
3716 | /* -ENOTSUPP here means we cannot reset the controller |
3717 | * but it's already (and still) up and running in | |
18867659 SC |
3718 | * "performant mode". Or, it might be 640x, which can't reset |
3719 | * due to concerns about shared bbwc between 6402/6404 pair. | |
1df8552a SC |
3720 | */ |
3721 | if (rc == -ENOTSUPP) | |
3722 | return 0; /* just try to do the kdump anyhow. */ | |
3723 | if (rc) | |
3724 | return -ENODEV; | |
4c2a8c40 SC |
3725 | |
3726 | /* Now try to get the controller to respond to a no-op */ | |
3727 | for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) { | |
3728 | if (hpsa_noop(pdev) == 0) | |
3729 | break; | |
3730 | else | |
3731 | dev_warn(&pdev->dev, "no-op failed%s\n", | |
3732 | (i < 11 ? "; re-trying" : "")); | |
3733 | } | |
3734 | return 0; | |
3735 | } | |
3736 | ||
edd16368 SC |
3737 | static int __devinit hpsa_init_one(struct pci_dev *pdev, |
3738 | const struct pci_device_id *ent) | |
3739 | { | |
4c2a8c40 | 3740 | int dac, rc; |
edd16368 SC |
3741 | struct ctlr_info *h; |
3742 | ||
3743 | if (number_of_controllers == 0) | |
3744 | printk(KERN_INFO DRIVER_NAME "\n"); | |
edd16368 | 3745 | |
4c2a8c40 SC |
3746 | rc = hpsa_init_reset_devices(pdev); |
3747 | if (rc) | |
3748 | return rc; | |
edd16368 | 3749 | |
303932fd DB |
3750 | /* Command structures must be aligned on a 32-byte boundary because |
3751 | * the 5 lower bits of the address are used by the hardware. and by | |
3752 | * the driver. See comments in hpsa.h for more info. | |
3753 | */ | |
3754 | #define COMMANDLIST_ALIGNMENT 32 | |
3755 | BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT); | |
edd16368 SC |
3756 | h = kzalloc(sizeof(*h), GFP_KERNEL); |
3757 | if (!h) | |
ecd9aad4 | 3758 | return -ENOMEM; |
edd16368 | 3759 | |
55c06c71 | 3760 | h->pdev = pdev; |
edd16368 SC |
3761 | h->busy_initializing = 1; |
3762 | INIT_HLIST_HEAD(&h->cmpQ); | |
3763 | INIT_HLIST_HEAD(&h->reqQ); | |
6eaf46fd SC |
3764 | spin_lock_init(&h->lock); |
3765 | spin_lock_init(&h->scan_lock); | |
55c06c71 | 3766 | rc = hpsa_pci_init(h); |
ecd9aad4 | 3767 | if (rc != 0) |
edd16368 SC |
3768 | goto clean1; |
3769 | ||
3770 | sprintf(h->devname, "hpsa%d", number_of_controllers); | |
3771 | h->ctlr = number_of_controllers; | |
3772 | number_of_controllers++; | |
edd16368 SC |
3773 | |
3774 | /* configure PCI DMA stuff */ | |
ecd9aad4 SC |
3775 | rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); |
3776 | if (rc == 0) { | |
edd16368 | 3777 | dac = 1; |
ecd9aad4 SC |
3778 | } else { |
3779 | rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); | |
3780 | if (rc == 0) { | |
3781 | dac = 0; | |
3782 | } else { | |
3783 | dev_err(&pdev->dev, "no suitable DMA available\n"); | |
3784 | goto clean1; | |
3785 | } | |
edd16368 SC |
3786 | } |
3787 | ||
3788 | /* make sure the board interrupts are off */ | |
3789 | h->access.set_intr_mask(h, HPSA_INTR_OFF); | |
10f66018 SC |
3790 | |
3791 | if (h->msix_vector || h->msi_vector) | |
3792 | rc = request_irq(h->intr[PERF_MODE_INT], do_hpsa_intr_msi, | |
3793 | IRQF_DISABLED, h->devname, h); | |
3794 | else | |
3795 | rc = request_irq(h->intr[PERF_MODE_INT], do_hpsa_intr_intx, | |
3796 | IRQF_DISABLED, h->devname, h); | |
ecd9aad4 | 3797 | if (rc) { |
edd16368 | 3798 | dev_err(&pdev->dev, "unable to get irq %d for %s\n", |
303932fd | 3799 | h->intr[PERF_MODE_INT], h->devname); |
edd16368 SC |
3800 | goto clean2; |
3801 | } | |
3802 | ||
303932fd DB |
3803 | dev_info(&pdev->dev, "%s: <0x%x> at IRQ %d%s using DAC\n", |
3804 | h->devname, pdev->device, | |
3805 | h->intr[PERF_MODE_INT], dac ? "" : " not"); | |
edd16368 SC |
3806 | |
3807 | h->cmd_pool_bits = | |
3808 | kmalloc(((h->nr_cmds + BITS_PER_LONG - | |
3809 | 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL); | |
3810 | h->cmd_pool = pci_alloc_consistent(h->pdev, | |
3811 | h->nr_cmds * sizeof(*h->cmd_pool), | |
3812 | &(h->cmd_pool_dhandle)); | |
3813 | h->errinfo_pool = pci_alloc_consistent(h->pdev, | |
3814 | h->nr_cmds * sizeof(*h->errinfo_pool), | |
3815 | &(h->errinfo_pool_dhandle)); | |
3816 | if ((h->cmd_pool_bits == NULL) | |
3817 | || (h->cmd_pool == NULL) | |
3818 | || (h->errinfo_pool == NULL)) { | |
3819 | dev_err(&pdev->dev, "out of memory"); | |
ecd9aad4 | 3820 | rc = -ENOMEM; |
edd16368 SC |
3821 | goto clean4; |
3822 | } | |
33a2ffce SC |
3823 | if (hpsa_allocate_sg_chain_blocks(h)) |
3824 | goto clean4; | |
a08a8471 SC |
3825 | init_waitqueue_head(&h->scan_wait_queue); |
3826 | h->scan_finished = 1; /* no scan currently in progress */ | |
edd16368 SC |
3827 | |
3828 | pci_set_drvdata(pdev, h); | |
3829 | memset(h->cmd_pool_bits, 0, | |
3830 | ((h->nr_cmds + BITS_PER_LONG - | |
3831 | 1) / BITS_PER_LONG) * sizeof(unsigned long)); | |
3832 | ||
3833 | hpsa_scsi_setup(h); | |
3834 | ||
3835 | /* Turn the interrupts on so we can service requests */ | |
3836 | h->access.set_intr_mask(h, HPSA_INTR_ON); | |
3837 | ||
303932fd | 3838 | hpsa_put_ctlr_into_performant_mode(h); |
339b2b14 | 3839 | hpsa_hba_inquiry(h); |
edd16368 SC |
3840 | hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */ |
3841 | h->busy_initializing = 0; | |
3842 | return 1; | |
3843 | ||
3844 | clean4: | |
33a2ffce | 3845 | hpsa_free_sg_chain_blocks(h); |
edd16368 SC |
3846 | kfree(h->cmd_pool_bits); |
3847 | if (h->cmd_pool) | |
3848 | pci_free_consistent(h->pdev, | |
3849 | h->nr_cmds * sizeof(struct CommandList), | |
3850 | h->cmd_pool, h->cmd_pool_dhandle); | |
3851 | if (h->errinfo_pool) | |
3852 | pci_free_consistent(h->pdev, | |
3853 | h->nr_cmds * sizeof(struct ErrorInfo), | |
3854 | h->errinfo_pool, | |
3855 | h->errinfo_pool_dhandle); | |
303932fd | 3856 | free_irq(h->intr[PERF_MODE_INT], h); |
edd16368 SC |
3857 | clean2: |
3858 | clean1: | |
3859 | h->busy_initializing = 0; | |
3860 | kfree(h); | |
ecd9aad4 | 3861 | return rc; |
edd16368 SC |
3862 | } |
3863 | ||
3864 | static void hpsa_flush_cache(struct ctlr_info *h) | |
3865 | { | |
3866 | char *flush_buf; | |
3867 | struct CommandList *c; | |
3868 | ||
3869 | flush_buf = kzalloc(4, GFP_KERNEL); | |
3870 | if (!flush_buf) | |
3871 | return; | |
3872 | ||
3873 | c = cmd_special_alloc(h); | |
3874 | if (!c) { | |
3875 | dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); | |
3876 | goto out_of_memory; | |
3877 | } | |
3878 | fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0, | |
3879 | RAID_CTLR_LUNID, TYPE_CMD); | |
3880 | hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_TODEVICE); | |
3881 | if (c->err_info->CommandStatus != 0) | |
3882 | dev_warn(&h->pdev->dev, | |
3883 | "error flushing cache on controller\n"); | |
3884 | cmd_special_free(h, c); | |
3885 | out_of_memory: | |
3886 | kfree(flush_buf); | |
3887 | } | |
3888 | ||
3889 | static void hpsa_shutdown(struct pci_dev *pdev) | |
3890 | { | |
3891 | struct ctlr_info *h; | |
3892 | ||
3893 | h = pci_get_drvdata(pdev); | |
3894 | /* Turn board interrupts off and send the flush cache command | |
3895 | * sendcmd will turn off interrupt, and send the flush... | |
3896 | * To write all data in the battery backed cache to disks | |
3897 | */ | |
3898 | hpsa_flush_cache(h); | |
3899 | h->access.set_intr_mask(h, HPSA_INTR_OFF); | |
303932fd | 3900 | free_irq(h->intr[PERF_MODE_INT], h); |
edd16368 SC |
3901 | #ifdef CONFIG_PCI_MSI |
3902 | if (h->msix_vector) | |
3903 | pci_disable_msix(h->pdev); | |
3904 | else if (h->msi_vector) | |
3905 | pci_disable_msi(h->pdev); | |
3906 | #endif /* CONFIG_PCI_MSI */ | |
3907 | } | |
3908 | ||
3909 | static void __devexit hpsa_remove_one(struct pci_dev *pdev) | |
3910 | { | |
3911 | struct ctlr_info *h; | |
3912 | ||
3913 | if (pci_get_drvdata(pdev) == NULL) { | |
3914 | dev_err(&pdev->dev, "unable to remove device \n"); | |
3915 | return; | |
3916 | } | |
3917 | h = pci_get_drvdata(pdev); | |
edd16368 SC |
3918 | hpsa_unregister_scsi(h); /* unhook from SCSI subsystem */ |
3919 | hpsa_shutdown(pdev); | |
3920 | iounmap(h->vaddr); | |
204892e9 SC |
3921 | iounmap(h->transtable); |
3922 | iounmap(h->cfgtable); | |
33a2ffce | 3923 | hpsa_free_sg_chain_blocks(h); |
edd16368 SC |
3924 | pci_free_consistent(h->pdev, |
3925 | h->nr_cmds * sizeof(struct CommandList), | |
3926 | h->cmd_pool, h->cmd_pool_dhandle); | |
3927 | pci_free_consistent(h->pdev, | |
3928 | h->nr_cmds * sizeof(struct ErrorInfo), | |
3929 | h->errinfo_pool, h->errinfo_pool_dhandle); | |
303932fd DB |
3930 | pci_free_consistent(h->pdev, h->reply_pool_size, |
3931 | h->reply_pool, h->reply_pool_dhandle); | |
edd16368 | 3932 | kfree(h->cmd_pool_bits); |
303932fd | 3933 | kfree(h->blockFetchTable); |
339b2b14 | 3934 | kfree(h->hba_inquiry_data); |
edd16368 SC |
3935 | /* |
3936 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3937 | * Smart Array controllers that pci_enable_device does not undo | |
3938 | */ | |
3939 | pci_release_regions(pdev); | |
3940 | pci_set_drvdata(pdev, NULL); | |
edd16368 SC |
3941 | kfree(h); |
3942 | } | |
3943 | ||
3944 | static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev, | |
3945 | __attribute__((unused)) pm_message_t state) | |
3946 | { | |
3947 | return -ENOSYS; | |
3948 | } | |
3949 | ||
3950 | static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev) | |
3951 | { | |
3952 | return -ENOSYS; | |
3953 | } | |
3954 | ||
3955 | static struct pci_driver hpsa_pci_driver = { | |
3956 | .name = "hpsa", | |
3957 | .probe = hpsa_init_one, | |
3958 | .remove = __devexit_p(hpsa_remove_one), | |
3959 | .id_table = hpsa_pci_device_id, /* id_table */ | |
3960 | .shutdown = hpsa_shutdown, | |
3961 | .suspend = hpsa_suspend, | |
3962 | .resume = hpsa_resume, | |
3963 | }; | |
3964 | ||
303932fd DB |
3965 | /* Fill in bucket_map[], given nsgs (the max number of |
3966 | * scatter gather elements supported) and bucket[], | |
3967 | * which is an array of 8 integers. The bucket[] array | |
3968 | * contains 8 different DMA transfer sizes (in 16 | |
3969 | * byte increments) which the controller uses to fetch | |
3970 | * commands. This function fills in bucket_map[], which | |
3971 | * maps a given number of scatter gather elements to one of | |
3972 | * the 8 DMA transfer sizes. The point of it is to allow the | |
3973 | * controller to only do as much DMA as needed to fetch the | |
3974 | * command, with the DMA transfer size encoded in the lower | |
3975 | * bits of the command address. | |
3976 | */ | |
3977 | static void calc_bucket_map(int bucket[], int num_buckets, | |
3978 | int nsgs, int *bucket_map) | |
3979 | { | |
3980 | int i, j, b, size; | |
3981 | ||
3982 | /* even a command with 0 SGs requires 4 blocks */ | |
3983 | #define MINIMUM_TRANSFER_BLOCKS 4 | |
3984 | #define NUM_BUCKETS 8 | |
3985 | /* Note, bucket_map must have nsgs+1 entries. */ | |
3986 | for (i = 0; i <= nsgs; i++) { | |
3987 | /* Compute size of a command with i SG entries */ | |
3988 | size = i + MINIMUM_TRANSFER_BLOCKS; | |
3989 | b = num_buckets; /* Assume the biggest bucket */ | |
3990 | /* Find the bucket that is just big enough */ | |
3991 | for (j = 0; j < 8; j++) { | |
3992 | if (bucket[j] >= size) { | |
3993 | b = j; | |
3994 | break; | |
3995 | } | |
3996 | } | |
3997 | /* for a command with i SG entries, use bucket b. */ | |
3998 | bucket_map[i] = b; | |
3999 | } | |
4000 | } | |
4001 | ||
6c311b57 | 4002 | static __devinit void hpsa_enter_performant_mode(struct ctlr_info *h) |
303932fd | 4003 | { |
6c311b57 SC |
4004 | int i; |
4005 | unsigned long register_value; | |
def342bd SC |
4006 | |
4007 | /* This is a bit complicated. There are 8 registers on | |
4008 | * the controller which we write to to tell it 8 different | |
4009 | * sizes of commands which there may be. It's a way of | |
4010 | * reducing the DMA done to fetch each command. Encoded into | |
4011 | * each command's tag are 3 bits which communicate to the controller | |
4012 | * which of the eight sizes that command fits within. The size of | |
4013 | * each command depends on how many scatter gather entries there are. | |
4014 | * Each SG entry requires 16 bytes. The eight registers are programmed | |
4015 | * with the number of 16-byte blocks a command of that size requires. | |
4016 | * The smallest command possible requires 5 such 16 byte blocks. | |
4017 | * the largest command possible requires MAXSGENTRIES + 4 16-byte | |
4018 | * blocks. Note, this only extends to the SG entries contained | |
4019 | * within the command block, and does not extend to chained blocks | |
4020 | * of SG elements. bft[] contains the eight values we write to | |
4021 | * the registers. They are not evenly distributed, but have more | |
4022 | * sizes for small commands, and fewer sizes for larger commands. | |
4023 | */ | |
4024 | int bft[8] = {5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES + 4}; | |
4025 | BUILD_BUG_ON(28 > MAXSGENTRIES + 4); | |
303932fd DB |
4026 | /* 5 = 1 s/g entry or 4k |
4027 | * 6 = 2 s/g entry or 8k | |
4028 | * 8 = 4 s/g entry or 16k | |
4029 | * 10 = 6 s/g entry or 24k | |
4030 | */ | |
303932fd DB |
4031 | |
4032 | h->reply_pool_wraparound = 1; /* spec: init to 1 */ | |
4033 | ||
4034 | /* Controller spec: zero out this buffer. */ | |
4035 | memset(h->reply_pool, 0, h->reply_pool_size); | |
4036 | h->reply_pool_head = h->reply_pool; | |
4037 | ||
303932fd DB |
4038 | bft[7] = h->max_sg_entries + 4; |
4039 | calc_bucket_map(bft, ARRAY_SIZE(bft), 32, h->blockFetchTable); | |
4040 | for (i = 0; i < 8; i++) | |
4041 | writel(bft[i], &h->transtable->BlockFetch[i]); | |
4042 | ||
4043 | /* size of controller ring buffer */ | |
4044 | writel(h->max_commands, &h->transtable->RepQSize); | |
4045 | writel(1, &h->transtable->RepQCount); | |
4046 | writel(0, &h->transtable->RepQCtrAddrLow32); | |
4047 | writel(0, &h->transtable->RepQCtrAddrHigh32); | |
4048 | writel(h->reply_pool_dhandle, &h->transtable->RepQAddr0Low32); | |
4049 | writel(0, &h->transtable->RepQAddr0High32); | |
4050 | writel(CFGTBL_Trans_Performant, | |
4051 | &(h->cfgtable->HostWrite.TransportRequest)); | |
4052 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); | |
3f4336f3 | 4053 | hpsa_wait_for_mode_change_ack(h); |
303932fd DB |
4054 | register_value = readl(&(h->cfgtable->TransportActive)); |
4055 | if (!(register_value & CFGTBL_Trans_Performant)) { | |
4056 | dev_warn(&h->pdev->dev, "unable to get board into" | |
4057 | " performant mode\n"); | |
4058 | return; | |
4059 | } | |
6c311b57 SC |
4060 | } |
4061 | ||
4062 | static __devinit void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) | |
4063 | { | |
4064 | u32 trans_support; | |
4065 | ||
02ec19c8 SC |
4066 | if (hpsa_simple_mode) |
4067 | return; | |
4068 | ||
6c311b57 SC |
4069 | trans_support = readl(&(h->cfgtable->TransportSupport)); |
4070 | if (!(trans_support & PERFORMANT_MODE)) | |
4071 | return; | |
4072 | ||
cba3d38b | 4073 | hpsa_get_max_perf_mode_cmds(h); |
6c311b57 SC |
4074 | h->max_sg_entries = 32; |
4075 | /* Performant mode ring buffer and supporting data structures */ | |
4076 | h->reply_pool_size = h->max_commands * sizeof(u64); | |
4077 | h->reply_pool = pci_alloc_consistent(h->pdev, h->reply_pool_size, | |
4078 | &(h->reply_pool_dhandle)); | |
4079 | ||
4080 | /* Need a block fetch table for performant mode */ | |
4081 | h->blockFetchTable = kmalloc(((h->max_sg_entries+1) * | |
4082 | sizeof(u32)), GFP_KERNEL); | |
4083 | ||
4084 | if ((h->reply_pool == NULL) | |
4085 | || (h->blockFetchTable == NULL)) | |
4086 | goto clean_up; | |
4087 | ||
4088 | hpsa_enter_performant_mode(h); | |
303932fd DB |
4089 | |
4090 | /* Change the access methods to the performant access methods */ | |
4091 | h->access = SA5_performant_access; | |
4092 | h->transMethod = CFGTBL_Trans_Performant; | |
4093 | ||
4094 | return; | |
4095 | ||
4096 | clean_up: | |
4097 | if (h->reply_pool) | |
4098 | pci_free_consistent(h->pdev, h->reply_pool_size, | |
4099 | h->reply_pool, h->reply_pool_dhandle); | |
4100 | kfree(h->blockFetchTable); | |
4101 | } | |
4102 | ||
edd16368 SC |
4103 | /* |
4104 | * This is it. Register the PCI driver information for the cards we control | |
4105 | * the OS will call our registered routines when it finds one of our cards. | |
4106 | */ | |
4107 | static int __init hpsa_init(void) | |
4108 | { | |
31468401 | 4109 | return pci_register_driver(&hpsa_pci_driver); |
edd16368 SC |
4110 | } |
4111 | ||
4112 | static void __exit hpsa_cleanup(void) | |
4113 | { | |
4114 | pci_unregister_driver(&hpsa_pci_driver); | |
edd16368 SC |
4115 | } |
4116 | ||
4117 | module_init(hpsa_init); | |
4118 | module_exit(hpsa_cleanup); |