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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> | |
e5a44df8 | 26 | #include <linux/pci-aspm.h> |
edd16368 SC |
27 | #include <linux/kernel.h> |
28 | #include <linux/slab.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/fs.h> | |
31 | #include <linux/timer.h> | |
edd16368 SC |
32 | #include <linux/init.h> |
33 | #include <linux/spinlock.h> | |
edd16368 SC |
34 | #include <linux/compat.h> |
35 | #include <linux/blktrace_api.h> | |
36 | #include <linux/uaccess.h> | |
37 | #include <linux/io.h> | |
38 | #include <linux/dma-mapping.h> | |
39 | #include <linux/completion.h> | |
40 | #include <linux/moduleparam.h> | |
41 | #include <scsi/scsi.h> | |
42 | #include <scsi/scsi_cmnd.h> | |
43 | #include <scsi/scsi_device.h> | |
44 | #include <scsi/scsi_host.h> | |
667e23d4 | 45 | #include <scsi/scsi_tcq.h> |
edd16368 SC |
46 | #include <linux/cciss_ioctl.h> |
47 | #include <linux/string.h> | |
48 | #include <linux/bitmap.h> | |
60063497 | 49 | #include <linux/atomic.h> |
edd16368 | 50 | #include <linux/kthread.h> |
a0c12413 | 51 | #include <linux/jiffies.h> |
edd16368 SC |
52 | #include "hpsa_cmd.h" |
53 | #include "hpsa.h" | |
54 | ||
55 | /* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */ | |
e481cce8 | 56 | #define HPSA_DRIVER_VERSION "3.4.0-1" |
edd16368 | 57 | #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")" |
f79cfec6 | 58 | #define HPSA "hpsa" |
edd16368 SC |
59 | |
60 | /* How long to wait (in milliseconds) for board to go into simple mode */ | |
61 | #define MAX_CONFIG_WAIT 30000 | |
62 | #define MAX_IOCTL_CONFIG_WAIT 1000 | |
63 | ||
64 | /*define how many times we will try a command because of bus resets */ | |
65 | #define MAX_CMD_RETRIES 3 | |
66 | ||
67 | /* Embedded module documentation macros - see modules.h */ | |
68 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
69 | MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \ | |
70 | HPSA_DRIVER_VERSION); | |
71 | MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers"); | |
72 | MODULE_VERSION(HPSA_DRIVER_VERSION); | |
73 | MODULE_LICENSE("GPL"); | |
74 | ||
75 | static int hpsa_allow_any; | |
76 | module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR); | |
77 | MODULE_PARM_DESC(hpsa_allow_any, | |
78 | "Allow hpsa driver to access unknown HP Smart Array hardware"); | |
02ec19c8 SC |
79 | static int hpsa_simple_mode; |
80 | module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR); | |
81 | MODULE_PARM_DESC(hpsa_simple_mode, | |
82 | "Use 'simple mode' rather than 'performant mode'"); | |
edd16368 SC |
83 | |
84 | /* define the PCI info for the cards we can control */ | |
85 | static const struct pci_device_id hpsa_pci_device_id[] = { | |
edd16368 SC |
86 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, |
87 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, | |
88 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, | |
89 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, | |
90 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, | |
163dbcd8 MM |
91 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A}, |
92 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B}, | |
f8b01eb9 | 93 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233}, |
9143a961 | 94 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3350}, |
95 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3351}, | |
96 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3352}, | |
97 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3353}, | |
98 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3354}, | |
99 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3355}, | |
100 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3356}, | |
fe0c9610 MM |
101 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1921}, |
102 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1922}, | |
103 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1923}, | |
104 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1924}, | |
105 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1925}, | |
106 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1926}, | |
107 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1928}, | |
97b9f53d MM |
108 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1929}, |
109 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BD}, | |
110 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BE}, | |
111 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BF}, | |
112 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C0}, | |
113 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C1}, | |
114 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C2}, | |
115 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C3}, | |
116 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C4}, | |
117 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C5}, | |
118 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C7}, | |
119 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C8}, | |
120 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C9}, | |
7c03b870 | 121 | {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, |
6798cc0a | 122 | PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, |
edd16368 SC |
123 | {0,} |
124 | }; | |
125 | ||
126 | MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id); | |
127 | ||
128 | /* board_id = Subsystem Device ID & Vendor ID | |
129 | * product = Marketing Name for the board | |
130 | * access = Address of the struct of function pointers | |
131 | */ | |
132 | static struct board_type products[] = { | |
edd16368 SC |
133 | {0x3241103C, "Smart Array P212", &SA5_access}, |
134 | {0x3243103C, "Smart Array P410", &SA5_access}, | |
135 | {0x3245103C, "Smart Array P410i", &SA5_access}, | |
136 | {0x3247103C, "Smart Array P411", &SA5_access}, | |
137 | {0x3249103C, "Smart Array P812", &SA5_access}, | |
163dbcd8 MM |
138 | {0x324A103C, "Smart Array P712m", &SA5_access}, |
139 | {0x324B103C, "Smart Array P711m", &SA5_access}, | |
fe0c9610 MM |
140 | {0x3350103C, "Smart Array P222", &SA5_access}, |
141 | {0x3351103C, "Smart Array P420", &SA5_access}, | |
142 | {0x3352103C, "Smart Array P421", &SA5_access}, | |
143 | {0x3353103C, "Smart Array P822", &SA5_access}, | |
144 | {0x3354103C, "Smart Array P420i", &SA5_access}, | |
145 | {0x3355103C, "Smart Array P220i", &SA5_access}, | |
146 | {0x3356103C, "Smart Array P721m", &SA5_access}, | |
1fd6c8e3 MM |
147 | {0x1921103C, "Smart Array P830i", &SA5_access}, |
148 | {0x1922103C, "Smart Array P430", &SA5_access}, | |
149 | {0x1923103C, "Smart Array P431", &SA5_access}, | |
150 | {0x1924103C, "Smart Array P830", &SA5_access}, | |
151 | {0x1926103C, "Smart Array P731m", &SA5_access}, | |
152 | {0x1928103C, "Smart Array P230i", &SA5_access}, | |
153 | {0x1929103C, "Smart Array P530", &SA5_access}, | |
97b9f53d MM |
154 | {0x21BD103C, "Smart Array", &SA5_access}, |
155 | {0x21BE103C, "Smart Array", &SA5_access}, | |
156 | {0x21BF103C, "Smart Array", &SA5_access}, | |
157 | {0x21C0103C, "Smart Array", &SA5_access}, | |
158 | {0x21C1103C, "Smart Array", &SA5_access}, | |
159 | {0x21C2103C, "Smart Array", &SA5_access}, | |
160 | {0x21C3103C, "Smart Array", &SA5_access}, | |
161 | {0x21C4103C, "Smart Array", &SA5_access}, | |
162 | {0x21C5103C, "Smart Array", &SA5_access}, | |
163 | {0x21C7103C, "Smart Array", &SA5_access}, | |
164 | {0x21C8103C, "Smart Array", &SA5_access}, | |
165 | {0x21C9103C, "Smart Array", &SA5_access}, | |
edd16368 SC |
166 | {0xFFFF103C, "Unknown Smart Array", &SA5_access}, |
167 | }; | |
168 | ||
169 | static int number_of_controllers; | |
170 | ||
10f66018 SC |
171 | static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id); |
172 | static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id); | |
edd16368 SC |
173 | static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg); |
174 | static void start_io(struct ctlr_info *h); | |
175 | ||
176 | #ifdef CONFIG_COMPAT | |
177 | static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg); | |
178 | #endif | |
179 | ||
180 | static void cmd_free(struct ctlr_info *h, struct CommandList *c); | |
181 | static void cmd_special_free(struct ctlr_info *h, struct CommandList *c); | |
182 | static struct CommandList *cmd_alloc(struct ctlr_info *h); | |
183 | static struct CommandList *cmd_special_alloc(struct ctlr_info *h); | |
a2dac136 | 184 | static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, |
01a02ffc | 185 | void *buff, size_t size, u8 page_code, unsigned char *scsi3addr, |
edd16368 SC |
186 | int cmd_type); |
187 | ||
f281233d | 188 | static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd); |
a08a8471 SC |
189 | static void hpsa_scan_start(struct Scsi_Host *); |
190 | static int hpsa_scan_finished(struct Scsi_Host *sh, | |
191 | unsigned long elapsed_time); | |
667e23d4 SC |
192 | static int hpsa_change_queue_depth(struct scsi_device *sdev, |
193 | int qdepth, int reason); | |
edd16368 SC |
194 | |
195 | static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd); | |
75167d2c | 196 | static int hpsa_eh_abort_handler(struct scsi_cmnd *scsicmd); |
edd16368 SC |
197 | static int hpsa_slave_alloc(struct scsi_device *sdev); |
198 | static void hpsa_slave_destroy(struct scsi_device *sdev); | |
199 | ||
edd16368 | 200 | static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno); |
edd16368 SC |
201 | static int check_for_unit_attention(struct ctlr_info *h, |
202 | struct CommandList *c); | |
203 | static void check_ioctl_unit_attention(struct ctlr_info *h, | |
204 | struct CommandList *c); | |
303932fd DB |
205 | /* performant mode helper functions */ |
206 | static void calc_bucket_map(int *bucket, int num_buckets, | |
207 | int nsgs, int *bucket_map); | |
6f039790 | 208 | static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h); |
254f796b | 209 | static inline u32 next_command(struct ctlr_info *h, u8 q); |
6f039790 GKH |
210 | static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr, |
211 | u32 *cfg_base_addr, u64 *cfg_base_addr_index, | |
212 | u64 *cfg_offset); | |
213 | static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev, | |
214 | unsigned long *memory_bar); | |
215 | static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id); | |
216 | static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr, | |
217 | int wait_for_ready); | |
75167d2c | 218 | static inline void finish_cmd(struct CommandList *c); |
fe5389c8 SC |
219 | #define BOARD_NOT_READY 0 |
220 | #define BOARD_READY 1 | |
edd16368 | 221 | |
edd16368 SC |
222 | static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev) |
223 | { | |
224 | unsigned long *priv = shost_priv(sdev->host); | |
225 | return (struct ctlr_info *) *priv; | |
226 | } | |
227 | ||
a23513e8 SC |
228 | static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh) |
229 | { | |
230 | unsigned long *priv = shost_priv(sh); | |
231 | return (struct ctlr_info *) *priv; | |
232 | } | |
233 | ||
edd16368 SC |
234 | static int check_for_unit_attention(struct ctlr_info *h, |
235 | struct CommandList *c) | |
236 | { | |
237 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) | |
238 | return 0; | |
239 | ||
240 | switch (c->err_info->SenseInfo[12]) { | |
241 | case STATE_CHANGED: | |
f79cfec6 | 242 | dev_warn(&h->pdev->dev, HPSA "%d: a state change " |
edd16368 SC |
243 | "detected, command retried\n", h->ctlr); |
244 | break; | |
245 | case LUN_FAILED: | |
f79cfec6 | 246 | dev_warn(&h->pdev->dev, HPSA "%d: LUN failure " |
edd16368 SC |
247 | "detected, action required\n", h->ctlr); |
248 | break; | |
249 | case REPORT_LUNS_CHANGED: | |
f79cfec6 | 250 | dev_warn(&h->pdev->dev, HPSA "%d: report LUN data " |
31468401 | 251 | "changed, action required\n", h->ctlr); |
edd16368 | 252 | /* |
4f4eb9f1 ST |
253 | * Note: this REPORT_LUNS_CHANGED condition only occurs on the external |
254 | * target (array) devices. | |
edd16368 SC |
255 | */ |
256 | break; | |
257 | case POWER_OR_RESET: | |
f79cfec6 | 258 | dev_warn(&h->pdev->dev, HPSA "%d: a power on " |
edd16368 SC |
259 | "or device reset detected\n", h->ctlr); |
260 | break; | |
261 | case UNIT_ATTENTION_CLEARED: | |
f79cfec6 | 262 | dev_warn(&h->pdev->dev, HPSA "%d: unit attention " |
edd16368 SC |
263 | "cleared by another initiator\n", h->ctlr); |
264 | break; | |
265 | default: | |
f79cfec6 | 266 | dev_warn(&h->pdev->dev, HPSA "%d: unknown " |
edd16368 SC |
267 | "unit attention detected\n", h->ctlr); |
268 | break; | |
269 | } | |
270 | return 1; | |
271 | } | |
272 | ||
852af20a MB |
273 | static int check_for_busy(struct ctlr_info *h, struct CommandList *c) |
274 | { | |
275 | if (c->err_info->CommandStatus != CMD_TARGET_STATUS || | |
276 | (c->err_info->ScsiStatus != SAM_STAT_BUSY && | |
277 | c->err_info->ScsiStatus != SAM_STAT_TASK_SET_FULL)) | |
278 | return 0; | |
279 | dev_warn(&h->pdev->dev, HPSA "device busy"); | |
280 | return 1; | |
281 | } | |
282 | ||
edd16368 SC |
283 | static ssize_t host_store_rescan(struct device *dev, |
284 | struct device_attribute *attr, | |
285 | const char *buf, size_t count) | |
286 | { | |
287 | struct ctlr_info *h; | |
288 | struct Scsi_Host *shost = class_to_shost(dev); | |
a23513e8 | 289 | h = shost_to_hba(shost); |
31468401 | 290 | hpsa_scan_start(h->scsi_host); |
edd16368 SC |
291 | return count; |
292 | } | |
293 | ||
d28ce020 SC |
294 | static ssize_t host_show_firmware_revision(struct device *dev, |
295 | struct device_attribute *attr, char *buf) | |
296 | { | |
297 | struct ctlr_info *h; | |
298 | struct Scsi_Host *shost = class_to_shost(dev); | |
299 | unsigned char *fwrev; | |
300 | ||
301 | h = shost_to_hba(shost); | |
302 | if (!h->hba_inquiry_data) | |
303 | return 0; | |
304 | fwrev = &h->hba_inquiry_data[32]; | |
305 | return snprintf(buf, 20, "%c%c%c%c\n", | |
306 | fwrev[0], fwrev[1], fwrev[2], fwrev[3]); | |
307 | } | |
308 | ||
94a13649 SC |
309 | static ssize_t host_show_commands_outstanding(struct device *dev, |
310 | struct device_attribute *attr, char *buf) | |
311 | { | |
312 | struct Scsi_Host *shost = class_to_shost(dev); | |
313 | struct ctlr_info *h = shost_to_hba(shost); | |
314 | ||
315 | return snprintf(buf, 20, "%d\n", h->commands_outstanding); | |
316 | } | |
317 | ||
745a7a25 SC |
318 | static ssize_t host_show_transport_mode(struct device *dev, |
319 | struct device_attribute *attr, char *buf) | |
320 | { | |
321 | struct ctlr_info *h; | |
322 | struct Scsi_Host *shost = class_to_shost(dev); | |
323 | ||
324 | h = shost_to_hba(shost); | |
325 | return snprintf(buf, 20, "%s\n", | |
960a30e7 | 326 | h->transMethod & CFGTBL_Trans_Performant ? |
745a7a25 SC |
327 | "performant" : "simple"); |
328 | } | |
329 | ||
46380786 | 330 | /* List of controllers which cannot be hard reset on kexec with reset_devices */ |
941b1cda SC |
331 | static u32 unresettable_controller[] = { |
332 | 0x324a103C, /* Smart Array P712m */ | |
333 | 0x324b103C, /* SmartArray P711m */ | |
334 | 0x3223103C, /* Smart Array P800 */ | |
335 | 0x3234103C, /* Smart Array P400 */ | |
336 | 0x3235103C, /* Smart Array P400i */ | |
337 | 0x3211103C, /* Smart Array E200i */ | |
338 | 0x3212103C, /* Smart Array E200 */ | |
339 | 0x3213103C, /* Smart Array E200i */ | |
340 | 0x3214103C, /* Smart Array E200i */ | |
341 | 0x3215103C, /* Smart Array E200i */ | |
342 | 0x3237103C, /* Smart Array E500 */ | |
343 | 0x323D103C, /* Smart Array P700m */ | |
7af0abbc | 344 | 0x40800E11, /* Smart Array 5i */ |
941b1cda SC |
345 | 0x409C0E11, /* Smart Array 6400 */ |
346 | 0x409D0E11, /* Smart Array 6400 EM */ | |
5a4f934e TH |
347 | 0x40700E11, /* Smart Array 5300 */ |
348 | 0x40820E11, /* Smart Array 532 */ | |
349 | 0x40830E11, /* Smart Array 5312 */ | |
350 | 0x409A0E11, /* Smart Array 641 */ | |
351 | 0x409B0E11, /* Smart Array 642 */ | |
352 | 0x40910E11, /* Smart Array 6i */ | |
941b1cda SC |
353 | }; |
354 | ||
46380786 SC |
355 | /* List of controllers which cannot even be soft reset */ |
356 | static u32 soft_unresettable_controller[] = { | |
7af0abbc | 357 | 0x40800E11, /* Smart Array 5i */ |
5a4f934e TH |
358 | 0x40700E11, /* Smart Array 5300 */ |
359 | 0x40820E11, /* Smart Array 532 */ | |
360 | 0x40830E11, /* Smart Array 5312 */ | |
361 | 0x409A0E11, /* Smart Array 641 */ | |
362 | 0x409B0E11, /* Smart Array 642 */ | |
363 | 0x40910E11, /* Smart Array 6i */ | |
46380786 SC |
364 | /* Exclude 640x boards. These are two pci devices in one slot |
365 | * which share a battery backed cache module. One controls the | |
366 | * cache, the other accesses the cache through the one that controls | |
367 | * it. If we reset the one controlling the cache, the other will | |
368 | * likely not be happy. Just forbid resetting this conjoined mess. | |
369 | * The 640x isn't really supported by hpsa anyway. | |
370 | */ | |
371 | 0x409C0E11, /* Smart Array 6400 */ | |
372 | 0x409D0E11, /* Smart Array 6400 EM */ | |
373 | }; | |
374 | ||
375 | static int ctlr_is_hard_resettable(u32 board_id) | |
941b1cda SC |
376 | { |
377 | int i; | |
378 | ||
379 | for (i = 0; i < ARRAY_SIZE(unresettable_controller); i++) | |
46380786 SC |
380 | if (unresettable_controller[i] == board_id) |
381 | return 0; | |
382 | return 1; | |
383 | } | |
384 | ||
385 | static int ctlr_is_soft_resettable(u32 board_id) | |
386 | { | |
387 | int i; | |
388 | ||
389 | for (i = 0; i < ARRAY_SIZE(soft_unresettable_controller); i++) | |
390 | if (soft_unresettable_controller[i] == board_id) | |
941b1cda SC |
391 | return 0; |
392 | return 1; | |
393 | } | |
394 | ||
46380786 SC |
395 | static int ctlr_is_resettable(u32 board_id) |
396 | { | |
397 | return ctlr_is_hard_resettable(board_id) || | |
398 | ctlr_is_soft_resettable(board_id); | |
399 | } | |
400 | ||
941b1cda SC |
401 | static ssize_t host_show_resettable(struct device *dev, |
402 | struct device_attribute *attr, char *buf) | |
403 | { | |
404 | struct ctlr_info *h; | |
405 | struct Scsi_Host *shost = class_to_shost(dev); | |
406 | ||
407 | h = shost_to_hba(shost); | |
46380786 | 408 | return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id)); |
941b1cda SC |
409 | } |
410 | ||
edd16368 SC |
411 | static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[]) |
412 | { | |
413 | return (scsi3addr[3] & 0xC0) == 0x40; | |
414 | } | |
415 | ||
416 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", | |
d82357ea | 417 | "1(ADM)", "UNKNOWN" |
edd16368 SC |
418 | }; |
419 | #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1) | |
420 | ||
421 | static ssize_t raid_level_show(struct device *dev, | |
422 | struct device_attribute *attr, char *buf) | |
423 | { | |
424 | ssize_t l = 0; | |
82a72c0a | 425 | unsigned char rlevel; |
edd16368 SC |
426 | struct ctlr_info *h; |
427 | struct scsi_device *sdev; | |
428 | struct hpsa_scsi_dev_t *hdev; | |
429 | unsigned long flags; | |
430 | ||
431 | sdev = to_scsi_device(dev); | |
432 | h = sdev_to_hba(sdev); | |
433 | spin_lock_irqsave(&h->lock, flags); | |
434 | hdev = sdev->hostdata; | |
435 | if (!hdev) { | |
436 | spin_unlock_irqrestore(&h->lock, flags); | |
437 | return -ENODEV; | |
438 | } | |
439 | ||
440 | /* Is this even a logical drive? */ | |
441 | if (!is_logical_dev_addr_mode(hdev->scsi3addr)) { | |
442 | spin_unlock_irqrestore(&h->lock, flags); | |
443 | l = snprintf(buf, PAGE_SIZE, "N/A\n"); | |
444 | return l; | |
445 | } | |
446 | ||
447 | rlevel = hdev->raid_level; | |
448 | spin_unlock_irqrestore(&h->lock, flags); | |
82a72c0a | 449 | if (rlevel > RAID_UNKNOWN) |
edd16368 SC |
450 | rlevel = RAID_UNKNOWN; |
451 | l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]); | |
452 | return l; | |
453 | } | |
454 | ||
455 | static ssize_t lunid_show(struct device *dev, | |
456 | struct device_attribute *attr, char *buf) | |
457 | { | |
458 | struct ctlr_info *h; | |
459 | struct scsi_device *sdev; | |
460 | struct hpsa_scsi_dev_t *hdev; | |
461 | unsigned long flags; | |
462 | unsigned char lunid[8]; | |
463 | ||
464 | sdev = to_scsi_device(dev); | |
465 | h = sdev_to_hba(sdev); | |
466 | spin_lock_irqsave(&h->lock, flags); | |
467 | hdev = sdev->hostdata; | |
468 | if (!hdev) { | |
469 | spin_unlock_irqrestore(&h->lock, flags); | |
470 | return -ENODEV; | |
471 | } | |
472 | memcpy(lunid, hdev->scsi3addr, sizeof(lunid)); | |
473 | spin_unlock_irqrestore(&h->lock, flags); | |
474 | return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
475 | lunid[0], lunid[1], lunid[2], lunid[3], | |
476 | lunid[4], lunid[5], lunid[6], lunid[7]); | |
477 | } | |
478 | ||
479 | static ssize_t unique_id_show(struct device *dev, | |
480 | struct device_attribute *attr, char *buf) | |
481 | { | |
482 | struct ctlr_info *h; | |
483 | struct scsi_device *sdev; | |
484 | struct hpsa_scsi_dev_t *hdev; | |
485 | unsigned long flags; | |
486 | unsigned char sn[16]; | |
487 | ||
488 | sdev = to_scsi_device(dev); | |
489 | h = sdev_to_hba(sdev); | |
490 | spin_lock_irqsave(&h->lock, flags); | |
491 | hdev = sdev->hostdata; | |
492 | if (!hdev) { | |
493 | spin_unlock_irqrestore(&h->lock, flags); | |
494 | return -ENODEV; | |
495 | } | |
496 | memcpy(sn, hdev->device_id, sizeof(sn)); | |
497 | spin_unlock_irqrestore(&h->lock, flags); | |
498 | return snprintf(buf, 16 * 2 + 2, | |
499 | "%02X%02X%02X%02X%02X%02X%02X%02X" | |
500 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", | |
501 | sn[0], sn[1], sn[2], sn[3], | |
502 | sn[4], sn[5], sn[6], sn[7], | |
503 | sn[8], sn[9], sn[10], sn[11], | |
504 | sn[12], sn[13], sn[14], sn[15]); | |
505 | } | |
506 | ||
3f5eac3a SC |
507 | static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL); |
508 | static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL); | |
509 | static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL); | |
510 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); | |
511 | static DEVICE_ATTR(firmware_revision, S_IRUGO, | |
512 | host_show_firmware_revision, NULL); | |
513 | static DEVICE_ATTR(commands_outstanding, S_IRUGO, | |
514 | host_show_commands_outstanding, NULL); | |
515 | static DEVICE_ATTR(transport_mode, S_IRUGO, | |
516 | host_show_transport_mode, NULL); | |
941b1cda SC |
517 | static DEVICE_ATTR(resettable, S_IRUGO, |
518 | host_show_resettable, NULL); | |
3f5eac3a SC |
519 | |
520 | static struct device_attribute *hpsa_sdev_attrs[] = { | |
521 | &dev_attr_raid_level, | |
522 | &dev_attr_lunid, | |
523 | &dev_attr_unique_id, | |
524 | NULL, | |
525 | }; | |
526 | ||
527 | static struct device_attribute *hpsa_shost_attrs[] = { | |
528 | &dev_attr_rescan, | |
529 | &dev_attr_firmware_revision, | |
530 | &dev_attr_commands_outstanding, | |
531 | &dev_attr_transport_mode, | |
941b1cda | 532 | &dev_attr_resettable, |
3f5eac3a SC |
533 | NULL, |
534 | }; | |
535 | ||
536 | static struct scsi_host_template hpsa_driver_template = { | |
537 | .module = THIS_MODULE, | |
f79cfec6 SC |
538 | .name = HPSA, |
539 | .proc_name = HPSA, | |
3f5eac3a SC |
540 | .queuecommand = hpsa_scsi_queue_command, |
541 | .scan_start = hpsa_scan_start, | |
542 | .scan_finished = hpsa_scan_finished, | |
543 | .change_queue_depth = hpsa_change_queue_depth, | |
544 | .this_id = -1, | |
545 | .use_clustering = ENABLE_CLUSTERING, | |
75167d2c | 546 | .eh_abort_handler = hpsa_eh_abort_handler, |
3f5eac3a SC |
547 | .eh_device_reset_handler = hpsa_eh_device_reset_handler, |
548 | .ioctl = hpsa_ioctl, | |
549 | .slave_alloc = hpsa_slave_alloc, | |
550 | .slave_destroy = hpsa_slave_destroy, | |
551 | #ifdef CONFIG_COMPAT | |
552 | .compat_ioctl = hpsa_compat_ioctl, | |
553 | #endif | |
554 | .sdev_attrs = hpsa_sdev_attrs, | |
555 | .shost_attrs = hpsa_shost_attrs, | |
c0d6a4d1 | 556 | .max_sectors = 8192, |
54b2b50c | 557 | .no_write_same = 1, |
3f5eac3a SC |
558 | }; |
559 | ||
560 | ||
561 | /* Enqueuing and dequeuing functions for cmdlists. */ | |
562 | static inline void addQ(struct list_head *list, struct CommandList *c) | |
563 | { | |
564 | list_add_tail(&c->list, list); | |
565 | } | |
566 | ||
254f796b | 567 | static inline u32 next_command(struct ctlr_info *h, u8 q) |
3f5eac3a SC |
568 | { |
569 | u32 a; | |
254f796b | 570 | struct reply_pool *rq = &h->reply_queue[q]; |
e16a33ad | 571 | unsigned long flags; |
3f5eac3a SC |
572 | |
573 | if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant))) | |
254f796b | 574 | return h->access.command_completed(h, q); |
3f5eac3a | 575 | |
254f796b MG |
576 | if ((rq->head[rq->current_entry] & 1) == rq->wraparound) { |
577 | a = rq->head[rq->current_entry]; | |
578 | rq->current_entry++; | |
e16a33ad | 579 | spin_lock_irqsave(&h->lock, flags); |
3f5eac3a | 580 | h->commands_outstanding--; |
e16a33ad | 581 | spin_unlock_irqrestore(&h->lock, flags); |
3f5eac3a SC |
582 | } else { |
583 | a = FIFO_EMPTY; | |
584 | } | |
585 | /* Check for wraparound */ | |
254f796b MG |
586 | if (rq->current_entry == h->max_commands) { |
587 | rq->current_entry = 0; | |
588 | rq->wraparound ^= 1; | |
3f5eac3a SC |
589 | } |
590 | return a; | |
591 | } | |
592 | ||
593 | /* set_performant_mode: Modify the tag for cciss performant | |
594 | * set bit 0 for pull model, bits 3-1 for block fetch | |
595 | * register number | |
596 | */ | |
597 | static void set_performant_mode(struct ctlr_info *h, struct CommandList *c) | |
598 | { | |
254f796b | 599 | if (likely(h->transMethod & CFGTBL_Trans_Performant)) { |
3f5eac3a | 600 | c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); |
eee0f03a | 601 | if (likely(h->msix_vector > 0)) |
254f796b | 602 | c->Header.ReplyQueue = |
804a5cb5 | 603 | raw_smp_processor_id() % h->nreply_queues; |
254f796b | 604 | } |
3f5eac3a SC |
605 | } |
606 | ||
e85c5974 SC |
607 | static int is_firmware_flash_cmd(u8 *cdb) |
608 | { | |
609 | return cdb[0] == BMIC_WRITE && cdb[6] == BMIC_FLASH_FIRMWARE; | |
610 | } | |
611 | ||
612 | /* | |
613 | * During firmware flash, the heartbeat register may not update as frequently | |
614 | * as it should. So we dial down lockup detection during firmware flash. and | |
615 | * dial it back up when firmware flash completes. | |
616 | */ | |
617 | #define HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH (240 * HZ) | |
618 | #define HEARTBEAT_SAMPLE_INTERVAL (30 * HZ) | |
619 | static void dial_down_lockup_detection_during_fw_flash(struct ctlr_info *h, | |
620 | struct CommandList *c) | |
621 | { | |
622 | if (!is_firmware_flash_cmd(c->Request.CDB)) | |
623 | return; | |
624 | atomic_inc(&h->firmware_flash_in_progress); | |
625 | h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH; | |
626 | } | |
627 | ||
628 | static void dial_up_lockup_detection_on_fw_flash_complete(struct ctlr_info *h, | |
629 | struct CommandList *c) | |
630 | { | |
631 | if (is_firmware_flash_cmd(c->Request.CDB) && | |
632 | atomic_dec_and_test(&h->firmware_flash_in_progress)) | |
633 | h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL; | |
634 | } | |
635 | ||
3f5eac3a SC |
636 | static void enqueue_cmd_and_start_io(struct ctlr_info *h, |
637 | struct CommandList *c) | |
638 | { | |
639 | unsigned long flags; | |
640 | ||
641 | set_performant_mode(h, c); | |
e85c5974 | 642 | dial_down_lockup_detection_during_fw_flash(h, c); |
3f5eac3a SC |
643 | spin_lock_irqsave(&h->lock, flags); |
644 | addQ(&h->reqQ, c); | |
645 | h->Qdepth++; | |
3f5eac3a | 646 | spin_unlock_irqrestore(&h->lock, flags); |
e16a33ad | 647 | start_io(h); |
3f5eac3a SC |
648 | } |
649 | ||
650 | static inline void removeQ(struct CommandList *c) | |
651 | { | |
652 | if (WARN_ON(list_empty(&c->list))) | |
653 | return; | |
654 | list_del_init(&c->list); | |
655 | } | |
656 | ||
657 | static inline int is_hba_lunid(unsigned char scsi3addr[]) | |
658 | { | |
659 | return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0; | |
660 | } | |
661 | ||
662 | static inline int is_scsi_rev_5(struct ctlr_info *h) | |
663 | { | |
664 | if (!h->hba_inquiry_data) | |
665 | return 0; | |
666 | if ((h->hba_inquiry_data[2] & 0x07) == 5) | |
667 | return 1; | |
668 | return 0; | |
669 | } | |
670 | ||
edd16368 SC |
671 | static int hpsa_find_target_lun(struct ctlr_info *h, |
672 | unsigned char scsi3addr[], int bus, int *target, int *lun) | |
673 | { | |
674 | /* finds an unused bus, target, lun for a new physical device | |
675 | * assumes h->devlock is held | |
676 | */ | |
677 | int i, found = 0; | |
cfe5badc | 678 | DECLARE_BITMAP(lun_taken, HPSA_MAX_DEVICES); |
edd16368 | 679 | |
263d9401 | 680 | bitmap_zero(lun_taken, HPSA_MAX_DEVICES); |
edd16368 SC |
681 | |
682 | for (i = 0; i < h->ndevices; i++) { | |
683 | if (h->dev[i]->bus == bus && h->dev[i]->target != -1) | |
263d9401 | 684 | __set_bit(h->dev[i]->target, lun_taken); |
edd16368 SC |
685 | } |
686 | ||
263d9401 AM |
687 | i = find_first_zero_bit(lun_taken, HPSA_MAX_DEVICES); |
688 | if (i < HPSA_MAX_DEVICES) { | |
689 | /* *bus = 1; */ | |
690 | *target = i; | |
691 | *lun = 0; | |
692 | found = 1; | |
edd16368 SC |
693 | } |
694 | return !found; | |
695 | } | |
696 | ||
697 | /* Add an entry into h->dev[] array. */ | |
698 | static int hpsa_scsi_add_entry(struct ctlr_info *h, int hostno, | |
699 | struct hpsa_scsi_dev_t *device, | |
700 | struct hpsa_scsi_dev_t *added[], int *nadded) | |
701 | { | |
702 | /* assumes h->devlock is held */ | |
703 | int n = h->ndevices; | |
704 | int i; | |
705 | unsigned char addr1[8], addr2[8]; | |
706 | struct hpsa_scsi_dev_t *sd; | |
707 | ||
cfe5badc | 708 | if (n >= HPSA_MAX_DEVICES) { |
edd16368 SC |
709 | dev_err(&h->pdev->dev, "too many devices, some will be " |
710 | "inaccessible.\n"); | |
711 | return -1; | |
712 | } | |
713 | ||
714 | /* physical devices do not have lun or target assigned until now. */ | |
715 | if (device->lun != -1) | |
716 | /* Logical device, lun is already assigned. */ | |
717 | goto lun_assigned; | |
718 | ||
719 | /* If this device a non-zero lun of a multi-lun device | |
720 | * byte 4 of the 8-byte LUN addr will contain the logical | |
721 | * unit no, zero otherise. | |
722 | */ | |
723 | if (device->scsi3addr[4] == 0) { | |
724 | /* This is not a non-zero lun of a multi-lun device */ | |
725 | if (hpsa_find_target_lun(h, device->scsi3addr, | |
726 | device->bus, &device->target, &device->lun) != 0) | |
727 | return -1; | |
728 | goto lun_assigned; | |
729 | } | |
730 | ||
731 | /* This is a non-zero lun of a multi-lun device. | |
732 | * Search through our list and find the device which | |
733 | * has the same 8 byte LUN address, excepting byte 4. | |
734 | * Assign the same bus and target for this new LUN. | |
735 | * Use the logical unit number from the firmware. | |
736 | */ | |
737 | memcpy(addr1, device->scsi3addr, 8); | |
738 | addr1[4] = 0; | |
739 | for (i = 0; i < n; i++) { | |
740 | sd = h->dev[i]; | |
741 | memcpy(addr2, sd->scsi3addr, 8); | |
742 | addr2[4] = 0; | |
743 | /* differ only in byte 4? */ | |
744 | if (memcmp(addr1, addr2, 8) == 0) { | |
745 | device->bus = sd->bus; | |
746 | device->target = sd->target; | |
747 | device->lun = device->scsi3addr[4]; | |
748 | break; | |
749 | } | |
750 | } | |
751 | if (device->lun == -1) { | |
752 | dev_warn(&h->pdev->dev, "physical device with no LUN=0," | |
753 | " suspect firmware bug or unsupported hardware " | |
754 | "configuration.\n"); | |
755 | return -1; | |
756 | } | |
757 | ||
758 | lun_assigned: | |
759 | ||
760 | h->dev[n] = device; | |
761 | h->ndevices++; | |
762 | added[*nadded] = device; | |
763 | (*nadded)++; | |
764 | ||
765 | /* initially, (before registering with scsi layer) we don't | |
766 | * know our hostno and we don't want to print anything first | |
767 | * time anyway (the scsi layer's inquiries will show that info) | |
768 | */ | |
769 | /* if (hostno != -1) */ | |
770 | dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d added.\n", | |
771 | scsi_device_type(device->devtype), hostno, | |
772 | device->bus, device->target, device->lun); | |
773 | return 0; | |
774 | } | |
775 | ||
bd9244f7 ST |
776 | /* Update an entry in h->dev[] array. */ |
777 | static void hpsa_scsi_update_entry(struct ctlr_info *h, int hostno, | |
778 | int entry, struct hpsa_scsi_dev_t *new_entry) | |
779 | { | |
780 | /* assumes h->devlock is held */ | |
781 | BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES); | |
782 | ||
783 | /* Raid level changed. */ | |
784 | h->dev[entry]->raid_level = new_entry->raid_level; | |
785 | dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d updated.\n", | |
786 | scsi_device_type(new_entry->devtype), hostno, new_entry->bus, | |
787 | new_entry->target, new_entry->lun); | |
788 | } | |
789 | ||
2a8ccf31 SC |
790 | /* Replace an entry from h->dev[] array. */ |
791 | static void hpsa_scsi_replace_entry(struct ctlr_info *h, int hostno, | |
792 | int entry, struct hpsa_scsi_dev_t *new_entry, | |
793 | struct hpsa_scsi_dev_t *added[], int *nadded, | |
794 | struct hpsa_scsi_dev_t *removed[], int *nremoved) | |
795 | { | |
796 | /* assumes h->devlock is held */ | |
cfe5badc | 797 | BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES); |
2a8ccf31 SC |
798 | removed[*nremoved] = h->dev[entry]; |
799 | (*nremoved)++; | |
01350d05 SC |
800 | |
801 | /* | |
802 | * New physical devices won't have target/lun assigned yet | |
803 | * so we need to preserve the values in the slot we are replacing. | |
804 | */ | |
805 | if (new_entry->target == -1) { | |
806 | new_entry->target = h->dev[entry]->target; | |
807 | new_entry->lun = h->dev[entry]->lun; | |
808 | } | |
809 | ||
2a8ccf31 SC |
810 | h->dev[entry] = new_entry; |
811 | added[*nadded] = new_entry; | |
812 | (*nadded)++; | |
813 | dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d changed.\n", | |
814 | scsi_device_type(new_entry->devtype), hostno, new_entry->bus, | |
815 | new_entry->target, new_entry->lun); | |
816 | } | |
817 | ||
edd16368 SC |
818 | /* Remove an entry from h->dev[] array. */ |
819 | static void hpsa_scsi_remove_entry(struct ctlr_info *h, int hostno, int entry, | |
820 | struct hpsa_scsi_dev_t *removed[], int *nremoved) | |
821 | { | |
822 | /* assumes h->devlock is held */ | |
823 | int i; | |
824 | struct hpsa_scsi_dev_t *sd; | |
825 | ||
cfe5badc | 826 | BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES); |
edd16368 SC |
827 | |
828 | sd = h->dev[entry]; | |
829 | removed[*nremoved] = h->dev[entry]; | |
830 | (*nremoved)++; | |
831 | ||
832 | for (i = entry; i < h->ndevices-1; i++) | |
833 | h->dev[i] = h->dev[i+1]; | |
834 | h->ndevices--; | |
835 | dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d removed.\n", | |
836 | scsi_device_type(sd->devtype), hostno, sd->bus, sd->target, | |
837 | sd->lun); | |
838 | } | |
839 | ||
840 | #define SCSI3ADDR_EQ(a, b) ( \ | |
841 | (a)[7] == (b)[7] && \ | |
842 | (a)[6] == (b)[6] && \ | |
843 | (a)[5] == (b)[5] && \ | |
844 | (a)[4] == (b)[4] && \ | |
845 | (a)[3] == (b)[3] && \ | |
846 | (a)[2] == (b)[2] && \ | |
847 | (a)[1] == (b)[1] && \ | |
848 | (a)[0] == (b)[0]) | |
849 | ||
850 | static void fixup_botched_add(struct ctlr_info *h, | |
851 | struct hpsa_scsi_dev_t *added) | |
852 | { | |
853 | /* called when scsi_add_device fails in order to re-adjust | |
854 | * h->dev[] to match the mid layer's view. | |
855 | */ | |
856 | unsigned long flags; | |
857 | int i, j; | |
858 | ||
859 | spin_lock_irqsave(&h->lock, flags); | |
860 | for (i = 0; i < h->ndevices; i++) { | |
861 | if (h->dev[i] == added) { | |
862 | for (j = i; j < h->ndevices-1; j++) | |
863 | h->dev[j] = h->dev[j+1]; | |
864 | h->ndevices--; | |
865 | break; | |
866 | } | |
867 | } | |
868 | spin_unlock_irqrestore(&h->lock, flags); | |
869 | kfree(added); | |
870 | } | |
871 | ||
872 | static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1, | |
873 | struct hpsa_scsi_dev_t *dev2) | |
874 | { | |
edd16368 SC |
875 | /* we compare everything except lun and target as these |
876 | * are not yet assigned. Compare parts likely | |
877 | * to differ first | |
878 | */ | |
879 | if (memcmp(dev1->scsi3addr, dev2->scsi3addr, | |
880 | sizeof(dev1->scsi3addr)) != 0) | |
881 | return 0; | |
882 | if (memcmp(dev1->device_id, dev2->device_id, | |
883 | sizeof(dev1->device_id)) != 0) | |
884 | return 0; | |
885 | if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0) | |
886 | return 0; | |
887 | if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0) | |
888 | return 0; | |
edd16368 SC |
889 | if (dev1->devtype != dev2->devtype) |
890 | return 0; | |
edd16368 SC |
891 | if (dev1->bus != dev2->bus) |
892 | return 0; | |
893 | return 1; | |
894 | } | |
895 | ||
bd9244f7 ST |
896 | static inline int device_updated(struct hpsa_scsi_dev_t *dev1, |
897 | struct hpsa_scsi_dev_t *dev2) | |
898 | { | |
899 | /* Device attributes that can change, but don't mean | |
900 | * that the device is a different device, nor that the OS | |
901 | * needs to be told anything about the change. | |
902 | */ | |
903 | if (dev1->raid_level != dev2->raid_level) | |
904 | return 1; | |
905 | return 0; | |
906 | } | |
907 | ||
edd16368 SC |
908 | /* Find needle in haystack. If exact match found, return DEVICE_SAME, |
909 | * and return needle location in *index. If scsi3addr matches, but not | |
910 | * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle | |
bd9244f7 ST |
911 | * location in *index. |
912 | * In the case of a minor device attribute change, such as RAID level, just | |
913 | * return DEVICE_UPDATED, along with the updated device's location in index. | |
914 | * If needle not found, return DEVICE_NOT_FOUND. | |
edd16368 SC |
915 | */ |
916 | static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle, | |
917 | struct hpsa_scsi_dev_t *haystack[], int haystack_size, | |
918 | int *index) | |
919 | { | |
920 | int i; | |
921 | #define DEVICE_NOT_FOUND 0 | |
922 | #define DEVICE_CHANGED 1 | |
923 | #define DEVICE_SAME 2 | |
bd9244f7 | 924 | #define DEVICE_UPDATED 3 |
edd16368 | 925 | for (i = 0; i < haystack_size; i++) { |
23231048 SC |
926 | if (haystack[i] == NULL) /* previously removed. */ |
927 | continue; | |
edd16368 SC |
928 | if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) { |
929 | *index = i; | |
bd9244f7 ST |
930 | if (device_is_the_same(needle, haystack[i])) { |
931 | if (device_updated(needle, haystack[i])) | |
932 | return DEVICE_UPDATED; | |
edd16368 | 933 | return DEVICE_SAME; |
bd9244f7 | 934 | } else { |
edd16368 | 935 | return DEVICE_CHANGED; |
bd9244f7 | 936 | } |
edd16368 SC |
937 | } |
938 | } | |
939 | *index = -1; | |
940 | return DEVICE_NOT_FOUND; | |
941 | } | |
942 | ||
4967bd3e | 943 | static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno, |
edd16368 SC |
944 | struct hpsa_scsi_dev_t *sd[], int nsds) |
945 | { | |
946 | /* sd contains scsi3 addresses and devtypes, and inquiry | |
947 | * data. This function takes what's in sd to be the current | |
948 | * reality and updates h->dev[] to reflect that reality. | |
949 | */ | |
950 | int i, entry, device_change, changes = 0; | |
951 | struct hpsa_scsi_dev_t *csd; | |
952 | unsigned long flags; | |
953 | struct hpsa_scsi_dev_t **added, **removed; | |
954 | int nadded, nremoved; | |
955 | struct Scsi_Host *sh = NULL; | |
956 | ||
cfe5badc ST |
957 | added = kzalloc(sizeof(*added) * HPSA_MAX_DEVICES, GFP_KERNEL); |
958 | removed = kzalloc(sizeof(*removed) * HPSA_MAX_DEVICES, GFP_KERNEL); | |
edd16368 SC |
959 | |
960 | if (!added || !removed) { | |
961 | dev_warn(&h->pdev->dev, "out of memory in " | |
962 | "adjust_hpsa_scsi_table\n"); | |
963 | goto free_and_out; | |
964 | } | |
965 | ||
966 | spin_lock_irqsave(&h->devlock, flags); | |
967 | ||
968 | /* find any devices in h->dev[] that are not in | |
969 | * sd[] and remove them from h->dev[], and for any | |
970 | * devices which have changed, remove the old device | |
971 | * info and add the new device info. | |
bd9244f7 ST |
972 | * If minor device attributes change, just update |
973 | * the existing device structure. | |
edd16368 SC |
974 | */ |
975 | i = 0; | |
976 | nremoved = 0; | |
977 | nadded = 0; | |
978 | while (i < h->ndevices) { | |
979 | csd = h->dev[i]; | |
980 | device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry); | |
981 | if (device_change == DEVICE_NOT_FOUND) { | |
982 | changes++; | |
983 | hpsa_scsi_remove_entry(h, hostno, i, | |
984 | removed, &nremoved); | |
985 | continue; /* remove ^^^, hence i not incremented */ | |
986 | } else if (device_change == DEVICE_CHANGED) { | |
987 | changes++; | |
2a8ccf31 SC |
988 | hpsa_scsi_replace_entry(h, hostno, i, sd[entry], |
989 | added, &nadded, removed, &nremoved); | |
c7f172dc SC |
990 | /* Set it to NULL to prevent it from being freed |
991 | * at the bottom of hpsa_update_scsi_devices() | |
992 | */ | |
993 | sd[entry] = NULL; | |
bd9244f7 ST |
994 | } else if (device_change == DEVICE_UPDATED) { |
995 | hpsa_scsi_update_entry(h, hostno, i, sd[entry]); | |
edd16368 SC |
996 | } |
997 | i++; | |
998 | } | |
999 | ||
1000 | /* Now, make sure every device listed in sd[] is also | |
1001 | * listed in h->dev[], adding them if they aren't found | |
1002 | */ | |
1003 | ||
1004 | for (i = 0; i < nsds; i++) { | |
1005 | if (!sd[i]) /* if already added above. */ | |
1006 | continue; | |
1007 | device_change = hpsa_scsi_find_entry(sd[i], h->dev, | |
1008 | h->ndevices, &entry); | |
1009 | if (device_change == DEVICE_NOT_FOUND) { | |
1010 | changes++; | |
1011 | if (hpsa_scsi_add_entry(h, hostno, sd[i], | |
1012 | added, &nadded) != 0) | |
1013 | break; | |
1014 | sd[i] = NULL; /* prevent from being freed later. */ | |
1015 | } else if (device_change == DEVICE_CHANGED) { | |
1016 | /* should never happen... */ | |
1017 | changes++; | |
1018 | dev_warn(&h->pdev->dev, | |
1019 | "device unexpectedly changed.\n"); | |
1020 | /* but if it does happen, we just ignore that device */ | |
1021 | } | |
1022 | } | |
1023 | spin_unlock_irqrestore(&h->devlock, flags); | |
1024 | ||
1025 | /* Don't notify scsi mid layer of any changes the first time through | |
1026 | * (or if there are no changes) scsi_scan_host will do it later the | |
1027 | * first time through. | |
1028 | */ | |
1029 | if (hostno == -1 || !changes) | |
1030 | goto free_and_out; | |
1031 | ||
1032 | sh = h->scsi_host; | |
1033 | /* Notify scsi mid layer of any removed devices */ | |
1034 | for (i = 0; i < nremoved; i++) { | |
1035 | struct scsi_device *sdev = | |
1036 | scsi_device_lookup(sh, removed[i]->bus, | |
1037 | removed[i]->target, removed[i]->lun); | |
1038 | if (sdev != NULL) { | |
1039 | scsi_remove_device(sdev); | |
1040 | scsi_device_put(sdev); | |
1041 | } else { | |
1042 | /* We don't expect to get here. | |
1043 | * future cmds to this device will get selection | |
1044 | * timeout as if the device was gone. | |
1045 | */ | |
1046 | dev_warn(&h->pdev->dev, "didn't find c%db%dt%dl%d " | |
1047 | " for removal.", hostno, removed[i]->bus, | |
1048 | removed[i]->target, removed[i]->lun); | |
1049 | } | |
1050 | kfree(removed[i]); | |
1051 | removed[i] = NULL; | |
1052 | } | |
1053 | ||
1054 | /* Notify scsi mid layer of any added devices */ | |
1055 | for (i = 0; i < nadded; i++) { | |
1056 | if (scsi_add_device(sh, added[i]->bus, | |
1057 | added[i]->target, added[i]->lun) == 0) | |
1058 | continue; | |
1059 | dev_warn(&h->pdev->dev, "scsi_add_device c%db%dt%dl%d failed, " | |
1060 | "device not added.\n", hostno, added[i]->bus, | |
1061 | added[i]->target, added[i]->lun); | |
1062 | /* now we have to remove it from h->dev, | |
1063 | * since it didn't get added to scsi mid layer | |
1064 | */ | |
1065 | fixup_botched_add(h, added[i]); | |
1066 | } | |
1067 | ||
1068 | free_and_out: | |
1069 | kfree(added); | |
1070 | kfree(removed); | |
edd16368 SC |
1071 | } |
1072 | ||
1073 | /* | |
9e03aa2f | 1074 | * Lookup bus/target/lun and return corresponding struct hpsa_scsi_dev_t * |
edd16368 SC |
1075 | * Assume's h->devlock is held. |
1076 | */ | |
1077 | static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h, | |
1078 | int bus, int target, int lun) | |
1079 | { | |
1080 | int i; | |
1081 | struct hpsa_scsi_dev_t *sd; | |
1082 | ||
1083 | for (i = 0; i < h->ndevices; i++) { | |
1084 | sd = h->dev[i]; | |
1085 | if (sd->bus == bus && sd->target == target && sd->lun == lun) | |
1086 | return sd; | |
1087 | } | |
1088 | return NULL; | |
1089 | } | |
1090 | ||
1091 | /* link sdev->hostdata to our per-device structure. */ | |
1092 | static int hpsa_slave_alloc(struct scsi_device *sdev) | |
1093 | { | |
1094 | struct hpsa_scsi_dev_t *sd; | |
1095 | unsigned long flags; | |
1096 | struct ctlr_info *h; | |
1097 | ||
1098 | h = sdev_to_hba(sdev); | |
1099 | spin_lock_irqsave(&h->devlock, flags); | |
1100 | sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev), | |
1101 | sdev_id(sdev), sdev->lun); | |
1102 | if (sd != NULL) | |
1103 | sdev->hostdata = sd; | |
1104 | spin_unlock_irqrestore(&h->devlock, flags); | |
1105 | return 0; | |
1106 | } | |
1107 | ||
1108 | static void hpsa_slave_destroy(struct scsi_device *sdev) | |
1109 | { | |
bcc44255 | 1110 | /* nothing to do. */ |
edd16368 SC |
1111 | } |
1112 | ||
33a2ffce SC |
1113 | static void hpsa_free_sg_chain_blocks(struct ctlr_info *h) |
1114 | { | |
1115 | int i; | |
1116 | ||
1117 | if (!h->cmd_sg_list) | |
1118 | return; | |
1119 | for (i = 0; i < h->nr_cmds; i++) { | |
1120 | kfree(h->cmd_sg_list[i]); | |
1121 | h->cmd_sg_list[i] = NULL; | |
1122 | } | |
1123 | kfree(h->cmd_sg_list); | |
1124 | h->cmd_sg_list = NULL; | |
1125 | } | |
1126 | ||
1127 | static int hpsa_allocate_sg_chain_blocks(struct ctlr_info *h) | |
1128 | { | |
1129 | int i; | |
1130 | ||
1131 | if (h->chainsize <= 0) | |
1132 | return 0; | |
1133 | ||
1134 | h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds, | |
1135 | GFP_KERNEL); | |
1136 | if (!h->cmd_sg_list) | |
1137 | return -ENOMEM; | |
1138 | for (i = 0; i < h->nr_cmds; i++) { | |
1139 | h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) * | |
1140 | h->chainsize, GFP_KERNEL); | |
1141 | if (!h->cmd_sg_list[i]) | |
1142 | goto clean; | |
1143 | } | |
1144 | return 0; | |
1145 | ||
1146 | clean: | |
1147 | hpsa_free_sg_chain_blocks(h); | |
1148 | return -ENOMEM; | |
1149 | } | |
1150 | ||
e2bea6df | 1151 | static int hpsa_map_sg_chain_block(struct ctlr_info *h, |
33a2ffce SC |
1152 | struct CommandList *c) |
1153 | { | |
1154 | struct SGDescriptor *chain_sg, *chain_block; | |
1155 | u64 temp64; | |
1156 | ||
1157 | chain_sg = &c->SG[h->max_cmd_sg_entries - 1]; | |
1158 | chain_block = h->cmd_sg_list[c->cmdindex]; | |
1159 | chain_sg->Ext = HPSA_SG_CHAIN; | |
1160 | chain_sg->Len = sizeof(*chain_sg) * | |
1161 | (c->Header.SGTotal - h->max_cmd_sg_entries); | |
1162 | temp64 = pci_map_single(h->pdev, chain_block, chain_sg->Len, | |
1163 | PCI_DMA_TODEVICE); | |
e2bea6df SC |
1164 | if (dma_mapping_error(&h->pdev->dev, temp64)) { |
1165 | /* prevent subsequent unmapping */ | |
1166 | chain_sg->Addr.lower = 0; | |
1167 | chain_sg->Addr.upper = 0; | |
1168 | return -1; | |
1169 | } | |
33a2ffce SC |
1170 | chain_sg->Addr.lower = (u32) (temp64 & 0x0FFFFFFFFULL); |
1171 | chain_sg->Addr.upper = (u32) ((temp64 >> 32) & 0x0FFFFFFFFULL); | |
e2bea6df | 1172 | return 0; |
33a2ffce SC |
1173 | } |
1174 | ||
1175 | static void hpsa_unmap_sg_chain_block(struct ctlr_info *h, | |
1176 | struct CommandList *c) | |
1177 | { | |
1178 | struct SGDescriptor *chain_sg; | |
1179 | union u64bit temp64; | |
1180 | ||
1181 | if (c->Header.SGTotal <= h->max_cmd_sg_entries) | |
1182 | return; | |
1183 | ||
1184 | chain_sg = &c->SG[h->max_cmd_sg_entries - 1]; | |
1185 | temp64.val32.lower = chain_sg->Addr.lower; | |
1186 | temp64.val32.upper = chain_sg->Addr.upper; | |
1187 | pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE); | |
1188 | } | |
1189 | ||
1fb011fb | 1190 | static void complete_scsi_command(struct CommandList *cp) |
edd16368 SC |
1191 | { |
1192 | struct scsi_cmnd *cmd; | |
1193 | struct ctlr_info *h; | |
1194 | struct ErrorInfo *ei; | |
1195 | ||
1196 | unsigned char sense_key; | |
1197 | unsigned char asc; /* additional sense code */ | |
1198 | unsigned char ascq; /* additional sense code qualifier */ | |
db111e18 | 1199 | unsigned long sense_data_size; |
edd16368 SC |
1200 | |
1201 | ei = cp->err_info; | |
1202 | cmd = (struct scsi_cmnd *) cp->scsi_cmd; | |
1203 | h = cp->h; | |
1204 | ||
1205 | scsi_dma_unmap(cmd); /* undo the DMA mappings */ | |
33a2ffce SC |
1206 | if (cp->Header.SGTotal > h->max_cmd_sg_entries) |
1207 | hpsa_unmap_sg_chain_block(h, cp); | |
edd16368 SC |
1208 | |
1209 | cmd->result = (DID_OK << 16); /* host byte */ | |
1210 | cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ | |
5512672f | 1211 | cmd->result |= ei->ScsiStatus; |
edd16368 SC |
1212 | |
1213 | /* copy the sense data whether we need to or not. */ | |
db111e18 SC |
1214 | if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo)) |
1215 | sense_data_size = SCSI_SENSE_BUFFERSIZE; | |
1216 | else | |
1217 | sense_data_size = sizeof(ei->SenseInfo); | |
1218 | if (ei->SenseLen < sense_data_size) | |
1219 | sense_data_size = ei->SenseLen; | |
1220 | ||
1221 | memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size); | |
edd16368 SC |
1222 | scsi_set_resid(cmd, ei->ResidualCnt); |
1223 | ||
1224 | if (ei->CommandStatus == 0) { | |
edd16368 | 1225 | cmd_free(h, cp); |
2cc5bfaf | 1226 | cmd->scsi_done(cmd); |
edd16368 SC |
1227 | return; |
1228 | } | |
1229 | ||
1230 | /* an error has occurred */ | |
1231 | switch (ei->CommandStatus) { | |
1232 | ||
1233 | case CMD_TARGET_STATUS: | |
1234 | if (ei->ScsiStatus) { | |
1235 | /* Get sense key */ | |
1236 | sense_key = 0xf & ei->SenseInfo[2]; | |
1237 | /* Get additional sense code */ | |
1238 | asc = ei->SenseInfo[12]; | |
1239 | /* Get addition sense code qualifier */ | |
1240 | ascq = ei->SenseInfo[13]; | |
1241 | } | |
1242 | ||
1243 | if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) { | |
3ce438df | 1244 | if (check_for_unit_attention(h, cp)) |
edd16368 | 1245 | break; |
edd16368 SC |
1246 | if (sense_key == ILLEGAL_REQUEST) { |
1247 | /* | |
1248 | * SCSI REPORT_LUNS is commonly unsupported on | |
1249 | * Smart Array. Suppress noisy complaint. | |
1250 | */ | |
1251 | if (cp->Request.CDB[0] == REPORT_LUNS) | |
1252 | break; | |
1253 | ||
1254 | /* If ASC/ASCQ indicate Logical Unit | |
1255 | * Not Supported condition, | |
1256 | */ | |
1257 | if ((asc == 0x25) && (ascq == 0x0)) { | |
1258 | dev_warn(&h->pdev->dev, "cp %p " | |
1259 | "has check condition\n", cp); | |
1260 | break; | |
1261 | } | |
1262 | } | |
1263 | ||
1264 | if (sense_key == NOT_READY) { | |
1265 | /* If Sense is Not Ready, Logical Unit | |
1266 | * Not ready, Manual Intervention | |
1267 | * required | |
1268 | */ | |
1269 | if ((asc == 0x04) && (ascq == 0x03)) { | |
edd16368 SC |
1270 | dev_warn(&h->pdev->dev, "cp %p " |
1271 | "has check condition: unit " | |
1272 | "not ready, manual " | |
1273 | "intervention required\n", cp); | |
1274 | break; | |
1275 | } | |
1276 | } | |
1d3b3609 MG |
1277 | if (sense_key == ABORTED_COMMAND) { |
1278 | /* Aborted command is retryable */ | |
1279 | dev_warn(&h->pdev->dev, "cp %p " | |
1280 | "has check condition: aborted command: " | |
1281 | "ASC: 0x%x, ASCQ: 0x%x\n", | |
1282 | cp, asc, ascq); | |
2e311fba | 1283 | cmd->result |= DID_SOFT_ERROR << 16; |
1d3b3609 MG |
1284 | break; |
1285 | } | |
edd16368 | 1286 | /* Must be some other type of check condition */ |
21b8e4ef | 1287 | dev_dbg(&h->pdev->dev, "cp %p has check condition: " |
edd16368 SC |
1288 | "unknown type: " |
1289 | "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, " | |
1290 | "Returning result: 0x%x, " | |
1291 | "cmd=[%02x %02x %02x %02x %02x " | |
807be732 | 1292 | "%02x %02x %02x %02x %02x %02x " |
edd16368 SC |
1293 | "%02x %02x %02x %02x %02x]\n", |
1294 | cp, sense_key, asc, ascq, | |
1295 | cmd->result, | |
1296 | cmd->cmnd[0], cmd->cmnd[1], | |
1297 | cmd->cmnd[2], cmd->cmnd[3], | |
1298 | cmd->cmnd[4], cmd->cmnd[5], | |
1299 | cmd->cmnd[6], cmd->cmnd[7], | |
807be732 MM |
1300 | cmd->cmnd[8], cmd->cmnd[9], |
1301 | cmd->cmnd[10], cmd->cmnd[11], | |
1302 | cmd->cmnd[12], cmd->cmnd[13], | |
1303 | cmd->cmnd[14], cmd->cmnd[15]); | |
edd16368 SC |
1304 | break; |
1305 | } | |
1306 | ||
1307 | ||
1308 | /* Problem was not a check condition | |
1309 | * Pass it up to the upper layers... | |
1310 | */ | |
1311 | if (ei->ScsiStatus) { | |
1312 | dev_warn(&h->pdev->dev, "cp %p has status 0x%x " | |
1313 | "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, " | |
1314 | "Returning result: 0x%x\n", | |
1315 | cp, ei->ScsiStatus, | |
1316 | sense_key, asc, ascq, | |
1317 | cmd->result); | |
1318 | } else { /* scsi status is zero??? How??? */ | |
1319 | dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. " | |
1320 | "Returning no connection.\n", cp), | |
1321 | ||
1322 | /* Ordinarily, this case should never happen, | |
1323 | * but there is a bug in some released firmware | |
1324 | * revisions that allows it to happen if, for | |
1325 | * example, a 4100 backplane loses power and | |
1326 | * the tape drive is in it. We assume that | |
1327 | * it's a fatal error of some kind because we | |
1328 | * can't show that it wasn't. We will make it | |
1329 | * look like selection timeout since that is | |
1330 | * the most common reason for this to occur, | |
1331 | * and it's severe enough. | |
1332 | */ | |
1333 | ||
1334 | cmd->result = DID_NO_CONNECT << 16; | |
1335 | } | |
1336 | break; | |
1337 | ||
1338 | case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ | |
1339 | break; | |
1340 | case CMD_DATA_OVERRUN: | |
1341 | dev_warn(&h->pdev->dev, "cp %p has" | |
1342 | " completed with data overrun " | |
1343 | "reported\n", cp); | |
1344 | break; | |
1345 | case CMD_INVALID: { | |
1346 | /* print_bytes(cp, sizeof(*cp), 1, 0); | |
1347 | print_cmd(cp); */ | |
1348 | /* We get CMD_INVALID if you address a non-existent device | |
1349 | * instead of a selection timeout (no response). You will | |
1350 | * see this if you yank out a drive, then try to access it. | |
1351 | * This is kind of a shame because it means that any other | |
1352 | * CMD_INVALID (e.g. driver bug) will get interpreted as a | |
1353 | * missing target. */ | |
1354 | cmd->result = DID_NO_CONNECT << 16; | |
1355 | } | |
1356 | break; | |
1357 | case CMD_PROTOCOL_ERR: | |
256d0eaa | 1358 | cmd->result = DID_ERROR << 16; |
edd16368 | 1359 | dev_warn(&h->pdev->dev, "cp %p has " |
256d0eaa | 1360 | "protocol error\n", cp); |
edd16368 SC |
1361 | break; |
1362 | case CMD_HARDWARE_ERR: | |
1363 | cmd->result = DID_ERROR << 16; | |
1364 | dev_warn(&h->pdev->dev, "cp %p had hardware error\n", cp); | |
1365 | break; | |
1366 | case CMD_CONNECTION_LOST: | |
1367 | cmd->result = DID_ERROR << 16; | |
1368 | dev_warn(&h->pdev->dev, "cp %p had connection lost\n", cp); | |
1369 | break; | |
1370 | case CMD_ABORTED: | |
1371 | cmd->result = DID_ABORT << 16; | |
1372 | dev_warn(&h->pdev->dev, "cp %p was aborted with status 0x%x\n", | |
1373 | cp, ei->ScsiStatus); | |
1374 | break; | |
1375 | case CMD_ABORT_FAILED: | |
1376 | cmd->result = DID_ERROR << 16; | |
1377 | dev_warn(&h->pdev->dev, "cp %p reports abort failed\n", cp); | |
1378 | break; | |
1379 | case CMD_UNSOLICITED_ABORT: | |
f6e76055 SC |
1380 | cmd->result = DID_SOFT_ERROR << 16; /* retry the command */ |
1381 | dev_warn(&h->pdev->dev, "cp %p aborted due to an unsolicited " | |
edd16368 SC |
1382 | "abort\n", cp); |
1383 | break; | |
1384 | case CMD_TIMEOUT: | |
1385 | cmd->result = DID_TIME_OUT << 16; | |
1386 | dev_warn(&h->pdev->dev, "cp %p timedout\n", cp); | |
1387 | break; | |
1d5e2ed0 SC |
1388 | case CMD_UNABORTABLE: |
1389 | cmd->result = DID_ERROR << 16; | |
1390 | dev_warn(&h->pdev->dev, "Command unabortable\n"); | |
1391 | break; | |
edd16368 SC |
1392 | default: |
1393 | cmd->result = DID_ERROR << 16; | |
1394 | dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n", | |
1395 | cp, ei->CommandStatus); | |
1396 | } | |
edd16368 | 1397 | cmd_free(h, cp); |
2cc5bfaf | 1398 | cmd->scsi_done(cmd); |
edd16368 SC |
1399 | } |
1400 | ||
edd16368 SC |
1401 | static void hpsa_pci_unmap(struct pci_dev *pdev, |
1402 | struct CommandList *c, int sg_used, int data_direction) | |
1403 | { | |
1404 | int i; | |
1405 | union u64bit addr64; | |
1406 | ||
1407 | for (i = 0; i < sg_used; i++) { | |
1408 | addr64.val32.lower = c->SG[i].Addr.lower; | |
1409 | addr64.val32.upper = c->SG[i].Addr.upper; | |
1410 | pci_unmap_single(pdev, (dma_addr_t) addr64.val, c->SG[i].Len, | |
1411 | data_direction); | |
1412 | } | |
1413 | } | |
1414 | ||
a2dac136 | 1415 | static int hpsa_map_one(struct pci_dev *pdev, |
edd16368 SC |
1416 | struct CommandList *cp, |
1417 | unsigned char *buf, | |
1418 | size_t buflen, | |
1419 | int data_direction) | |
1420 | { | |
01a02ffc | 1421 | u64 addr64; |
edd16368 SC |
1422 | |
1423 | if (buflen == 0 || data_direction == PCI_DMA_NONE) { | |
1424 | cp->Header.SGList = 0; | |
1425 | cp->Header.SGTotal = 0; | |
a2dac136 | 1426 | return 0; |
edd16368 SC |
1427 | } |
1428 | ||
01a02ffc | 1429 | addr64 = (u64) pci_map_single(pdev, buf, buflen, data_direction); |
eceaae18 | 1430 | if (dma_mapping_error(&pdev->dev, addr64)) { |
a2dac136 | 1431 | /* Prevent subsequent unmap of something never mapped */ |
eceaae18 SK |
1432 | cp->Header.SGList = 0; |
1433 | cp->Header.SGTotal = 0; | |
a2dac136 | 1434 | return -1; |
eceaae18 | 1435 | } |
edd16368 | 1436 | cp->SG[0].Addr.lower = |
01a02ffc | 1437 | (u32) (addr64 & (u64) 0x00000000FFFFFFFF); |
edd16368 | 1438 | cp->SG[0].Addr.upper = |
01a02ffc | 1439 | (u32) ((addr64 >> 32) & (u64) 0x00000000FFFFFFFF); |
edd16368 | 1440 | cp->SG[0].Len = buflen; |
e1d9cbfa | 1441 | cp->SG[0].Ext = HPSA_SG_LAST; /* we are not chaining */ |
01a02ffc SC |
1442 | cp->Header.SGList = (u8) 1; /* no. SGs contig in this cmd */ |
1443 | cp->Header.SGTotal = (u16) 1; /* total sgs in this cmd list */ | |
a2dac136 | 1444 | return 0; |
edd16368 SC |
1445 | } |
1446 | ||
1447 | static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h, | |
1448 | struct CommandList *c) | |
1449 | { | |
1450 | DECLARE_COMPLETION_ONSTACK(wait); | |
1451 | ||
1452 | c->waiting = &wait; | |
1453 | enqueue_cmd_and_start_io(h, c); | |
1454 | wait_for_completion(&wait); | |
1455 | } | |
1456 | ||
a0c12413 SC |
1457 | static void hpsa_scsi_do_simple_cmd_core_if_no_lockup(struct ctlr_info *h, |
1458 | struct CommandList *c) | |
1459 | { | |
1460 | unsigned long flags; | |
1461 | ||
1462 | /* If controller lockup detected, fake a hardware error. */ | |
1463 | spin_lock_irqsave(&h->lock, flags); | |
1464 | if (unlikely(h->lockup_detected)) { | |
1465 | spin_unlock_irqrestore(&h->lock, flags); | |
1466 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; | |
1467 | } else { | |
1468 | spin_unlock_irqrestore(&h->lock, flags); | |
1469 | hpsa_scsi_do_simple_cmd_core(h, c); | |
1470 | } | |
1471 | } | |
1472 | ||
9c2fc160 | 1473 | #define MAX_DRIVER_CMD_RETRIES 25 |
edd16368 SC |
1474 | static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h, |
1475 | struct CommandList *c, int data_direction) | |
1476 | { | |
9c2fc160 | 1477 | int backoff_time = 10, retry_count = 0; |
edd16368 SC |
1478 | |
1479 | do { | |
7630abd0 | 1480 | memset(c->err_info, 0, sizeof(*c->err_info)); |
edd16368 SC |
1481 | hpsa_scsi_do_simple_cmd_core(h, c); |
1482 | retry_count++; | |
9c2fc160 SC |
1483 | if (retry_count > 3) { |
1484 | msleep(backoff_time); | |
1485 | if (backoff_time < 1000) | |
1486 | backoff_time *= 2; | |
1487 | } | |
852af20a | 1488 | } while ((check_for_unit_attention(h, c) || |
9c2fc160 SC |
1489 | check_for_busy(h, c)) && |
1490 | retry_count <= MAX_DRIVER_CMD_RETRIES); | |
edd16368 SC |
1491 | hpsa_pci_unmap(h->pdev, c, 1, data_direction); |
1492 | } | |
1493 | ||
1494 | static void hpsa_scsi_interpret_error(struct CommandList *cp) | |
1495 | { | |
1496 | struct ErrorInfo *ei; | |
1497 | struct device *d = &cp->h->pdev->dev; | |
1498 | ||
1499 | ei = cp->err_info; | |
1500 | switch (ei->CommandStatus) { | |
1501 | case CMD_TARGET_STATUS: | |
1502 | dev_warn(d, "cmd %p has completed with errors\n", cp); | |
1503 | dev_warn(d, "cmd %p has SCSI Status = %x\n", cp, | |
1504 | ei->ScsiStatus); | |
1505 | if (ei->ScsiStatus == 0) | |
1506 | dev_warn(d, "SCSI status is abnormally zero. " | |
1507 | "(probably indicates selection timeout " | |
1508 | "reported incorrectly due to a known " | |
1509 | "firmware bug, circa July, 2001.)\n"); | |
1510 | break; | |
1511 | case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ | |
1512 | dev_info(d, "UNDERRUN\n"); | |
1513 | break; | |
1514 | case CMD_DATA_OVERRUN: | |
1515 | dev_warn(d, "cp %p has completed with data overrun\n", cp); | |
1516 | break; | |
1517 | case CMD_INVALID: { | |
1518 | /* controller unfortunately reports SCSI passthru's | |
1519 | * to non-existent targets as invalid commands. | |
1520 | */ | |
1521 | dev_warn(d, "cp %p is reported invalid (probably means " | |
1522 | "target device no longer present)\n", cp); | |
1523 | /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0); | |
1524 | print_cmd(cp); */ | |
1525 | } | |
1526 | break; | |
1527 | case CMD_PROTOCOL_ERR: | |
1528 | dev_warn(d, "cp %p has protocol error \n", cp); | |
1529 | break; | |
1530 | case CMD_HARDWARE_ERR: | |
1531 | /* cmd->result = DID_ERROR << 16; */ | |
1532 | dev_warn(d, "cp %p had hardware error\n", cp); | |
1533 | break; | |
1534 | case CMD_CONNECTION_LOST: | |
1535 | dev_warn(d, "cp %p had connection lost\n", cp); | |
1536 | break; | |
1537 | case CMD_ABORTED: | |
1538 | dev_warn(d, "cp %p was aborted\n", cp); | |
1539 | break; | |
1540 | case CMD_ABORT_FAILED: | |
1541 | dev_warn(d, "cp %p reports abort failed\n", cp); | |
1542 | break; | |
1543 | case CMD_UNSOLICITED_ABORT: | |
1544 | dev_warn(d, "cp %p aborted due to an unsolicited abort\n", cp); | |
1545 | break; | |
1546 | case CMD_TIMEOUT: | |
1547 | dev_warn(d, "cp %p timed out\n", cp); | |
1548 | break; | |
1d5e2ed0 SC |
1549 | case CMD_UNABORTABLE: |
1550 | dev_warn(d, "Command unabortable\n"); | |
1551 | break; | |
edd16368 SC |
1552 | default: |
1553 | dev_warn(d, "cp %p returned unknown status %x\n", cp, | |
1554 | ei->CommandStatus); | |
1555 | } | |
1556 | } | |
1557 | ||
1558 | static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr, | |
1559 | unsigned char page, unsigned char *buf, | |
1560 | unsigned char bufsize) | |
1561 | { | |
1562 | int rc = IO_OK; | |
1563 | struct CommandList *c; | |
1564 | struct ErrorInfo *ei; | |
1565 | ||
1566 | c = cmd_special_alloc(h); | |
1567 | ||
1568 | if (c == NULL) { /* trouble... */ | |
1569 | dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); | |
ecd9aad4 | 1570 | return -ENOMEM; |
edd16368 SC |
1571 | } |
1572 | ||
a2dac136 SC |
1573 | if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, |
1574 | page, scsi3addr, TYPE_CMD)) { | |
1575 | rc = -1; | |
1576 | goto out; | |
1577 | } | |
edd16368 SC |
1578 | hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); |
1579 | ei = c->err_info; | |
1580 | if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { | |
1581 | hpsa_scsi_interpret_error(c); | |
1582 | rc = -1; | |
1583 | } | |
a2dac136 | 1584 | out: |
edd16368 SC |
1585 | cmd_special_free(h, c); |
1586 | return rc; | |
1587 | } | |
1588 | ||
1589 | static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr) | |
1590 | { | |
1591 | int rc = IO_OK; | |
1592 | struct CommandList *c; | |
1593 | struct ErrorInfo *ei; | |
1594 | ||
1595 | c = cmd_special_alloc(h); | |
1596 | ||
1597 | if (c == NULL) { /* trouble... */ | |
1598 | dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); | |
e9ea04a6 | 1599 | return -ENOMEM; |
edd16368 SC |
1600 | } |
1601 | ||
a2dac136 SC |
1602 | /* fill_cmd can't fail here, no data buffer to map. */ |
1603 | (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, | |
1604 | NULL, 0, 0, scsi3addr, TYPE_MSG); | |
edd16368 SC |
1605 | hpsa_scsi_do_simple_cmd_core(h, c); |
1606 | /* no unmap needed here because no data xfer. */ | |
1607 | ||
1608 | ei = c->err_info; | |
1609 | if (ei->CommandStatus != 0) { | |
1610 | hpsa_scsi_interpret_error(c); | |
1611 | rc = -1; | |
1612 | } | |
1613 | cmd_special_free(h, c); | |
1614 | return rc; | |
1615 | } | |
1616 | ||
1617 | static void hpsa_get_raid_level(struct ctlr_info *h, | |
1618 | unsigned char *scsi3addr, unsigned char *raid_level) | |
1619 | { | |
1620 | int rc; | |
1621 | unsigned char *buf; | |
1622 | ||
1623 | *raid_level = RAID_UNKNOWN; | |
1624 | buf = kzalloc(64, GFP_KERNEL); | |
1625 | if (!buf) | |
1626 | return; | |
1627 | rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0xC1, buf, 64); | |
1628 | if (rc == 0) | |
1629 | *raid_level = buf[8]; | |
1630 | if (*raid_level > RAID_UNKNOWN) | |
1631 | *raid_level = RAID_UNKNOWN; | |
1632 | kfree(buf); | |
1633 | return; | |
1634 | } | |
1635 | ||
1636 | /* Get the device id from inquiry page 0x83 */ | |
1637 | static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr, | |
1638 | unsigned char *device_id, int buflen) | |
1639 | { | |
1640 | int rc; | |
1641 | unsigned char *buf; | |
1642 | ||
1643 | if (buflen > 16) | |
1644 | buflen = 16; | |
1645 | buf = kzalloc(64, GFP_KERNEL); | |
1646 | if (!buf) | |
1647 | return -1; | |
1648 | rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0x83, buf, 64); | |
1649 | if (rc == 0) | |
1650 | memcpy(device_id, &buf[8], buflen); | |
1651 | kfree(buf); | |
1652 | return rc != 0; | |
1653 | } | |
1654 | ||
1655 | static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical, | |
1656 | struct ReportLUNdata *buf, int bufsize, | |
1657 | int extended_response) | |
1658 | { | |
1659 | int rc = IO_OK; | |
1660 | struct CommandList *c; | |
1661 | unsigned char scsi3addr[8]; | |
1662 | struct ErrorInfo *ei; | |
1663 | ||
1664 | c = cmd_special_alloc(h); | |
1665 | if (c == NULL) { /* trouble... */ | |
1666 | dev_err(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); | |
1667 | return -1; | |
1668 | } | |
e89c0ae7 SC |
1669 | /* address the controller */ |
1670 | memset(scsi3addr, 0, sizeof(scsi3addr)); | |
a2dac136 SC |
1671 | if (fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h, |
1672 | buf, bufsize, 0, scsi3addr, TYPE_CMD)) { | |
1673 | rc = -1; | |
1674 | goto out; | |
1675 | } | |
edd16368 SC |
1676 | if (extended_response) |
1677 | c->Request.CDB[1] = extended_response; | |
1678 | hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); | |
1679 | ei = c->err_info; | |
1680 | if (ei->CommandStatus != 0 && | |
1681 | ei->CommandStatus != CMD_DATA_UNDERRUN) { | |
1682 | hpsa_scsi_interpret_error(c); | |
1683 | rc = -1; | |
1684 | } | |
a2dac136 | 1685 | out: |
edd16368 SC |
1686 | cmd_special_free(h, c); |
1687 | return rc; | |
1688 | } | |
1689 | ||
1690 | static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h, | |
1691 | struct ReportLUNdata *buf, | |
1692 | int bufsize, int extended_response) | |
1693 | { | |
1694 | return hpsa_scsi_do_report_luns(h, 0, buf, bufsize, extended_response); | |
1695 | } | |
1696 | ||
1697 | static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h, | |
1698 | struct ReportLUNdata *buf, int bufsize) | |
1699 | { | |
1700 | return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0); | |
1701 | } | |
1702 | ||
1703 | static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device, | |
1704 | int bus, int target, int lun) | |
1705 | { | |
1706 | device->bus = bus; | |
1707 | device->target = target; | |
1708 | device->lun = lun; | |
1709 | } | |
1710 | ||
1711 | static int hpsa_update_device_info(struct ctlr_info *h, | |
0b0e1d6c SC |
1712 | unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device, |
1713 | unsigned char *is_OBDR_device) | |
edd16368 | 1714 | { |
0b0e1d6c SC |
1715 | |
1716 | #define OBDR_SIG_OFFSET 43 | |
1717 | #define OBDR_TAPE_SIG "$DR-10" | |
1718 | #define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1) | |
1719 | #define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN) | |
1720 | ||
ea6d3bc3 | 1721 | unsigned char *inq_buff; |
0b0e1d6c | 1722 | unsigned char *obdr_sig; |
edd16368 | 1723 | |
ea6d3bc3 | 1724 | inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); |
edd16368 SC |
1725 | if (!inq_buff) |
1726 | goto bail_out; | |
1727 | ||
edd16368 SC |
1728 | /* Do an inquiry to the device to see what it is. */ |
1729 | if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff, | |
1730 | (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) { | |
1731 | /* Inquiry failed (msg printed already) */ | |
1732 | dev_err(&h->pdev->dev, | |
1733 | "hpsa_update_device_info: inquiry failed\n"); | |
1734 | goto bail_out; | |
1735 | } | |
1736 | ||
edd16368 SC |
1737 | this_device->devtype = (inq_buff[0] & 0x1f); |
1738 | memcpy(this_device->scsi3addr, scsi3addr, 8); | |
1739 | memcpy(this_device->vendor, &inq_buff[8], | |
1740 | sizeof(this_device->vendor)); | |
1741 | memcpy(this_device->model, &inq_buff[16], | |
1742 | sizeof(this_device->model)); | |
edd16368 SC |
1743 | memset(this_device->device_id, 0, |
1744 | sizeof(this_device->device_id)); | |
1745 | hpsa_get_device_id(h, scsi3addr, this_device->device_id, | |
1746 | sizeof(this_device->device_id)); | |
1747 | ||
1748 | if (this_device->devtype == TYPE_DISK && | |
1749 | is_logical_dev_addr_mode(scsi3addr)) | |
1750 | hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level); | |
1751 | else | |
1752 | this_device->raid_level = RAID_UNKNOWN; | |
1753 | ||
0b0e1d6c SC |
1754 | if (is_OBDR_device) { |
1755 | /* See if this is a One-Button-Disaster-Recovery device | |
1756 | * by looking for "$DR-10" at offset 43 in inquiry data. | |
1757 | */ | |
1758 | obdr_sig = &inq_buff[OBDR_SIG_OFFSET]; | |
1759 | *is_OBDR_device = (this_device->devtype == TYPE_ROM && | |
1760 | strncmp(obdr_sig, OBDR_TAPE_SIG, | |
1761 | OBDR_SIG_LEN) == 0); | |
1762 | } | |
1763 | ||
edd16368 SC |
1764 | kfree(inq_buff); |
1765 | return 0; | |
1766 | ||
1767 | bail_out: | |
1768 | kfree(inq_buff); | |
1769 | return 1; | |
1770 | } | |
1771 | ||
4f4eb9f1 | 1772 | static unsigned char *ext_target_model[] = { |
edd16368 SC |
1773 | "MSA2012", |
1774 | "MSA2024", | |
1775 | "MSA2312", | |
1776 | "MSA2324", | |
fda38518 | 1777 | "P2000 G3 SAS", |
e06c8e5c | 1778 | "MSA 2040 SAS", |
edd16368 SC |
1779 | NULL, |
1780 | }; | |
1781 | ||
4f4eb9f1 | 1782 | static int is_ext_target(struct ctlr_info *h, struct hpsa_scsi_dev_t *device) |
edd16368 SC |
1783 | { |
1784 | int i; | |
1785 | ||
4f4eb9f1 ST |
1786 | for (i = 0; ext_target_model[i]; i++) |
1787 | if (strncmp(device->model, ext_target_model[i], | |
1788 | strlen(ext_target_model[i])) == 0) | |
edd16368 SC |
1789 | return 1; |
1790 | return 0; | |
1791 | } | |
1792 | ||
1793 | /* Helper function to assign bus, target, lun mapping of devices. | |
4f4eb9f1 | 1794 | * Puts non-external target logical volumes on bus 0, external target logical |
edd16368 SC |
1795 | * volumes on bus 1, physical devices on bus 2. and the hba on bus 3. |
1796 | * Logical drive target and lun are assigned at this time, but | |
1797 | * physical device lun and target assignment are deferred (assigned | |
1798 | * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.) | |
1799 | */ | |
1800 | static void figure_bus_target_lun(struct ctlr_info *h, | |
1f310bde | 1801 | u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device) |
edd16368 | 1802 | { |
1f310bde SC |
1803 | u32 lunid = le32_to_cpu(*((__le32 *) lunaddrbytes)); |
1804 | ||
1805 | if (!is_logical_dev_addr_mode(lunaddrbytes)) { | |
1806 | /* physical device, target and lun filled in later */ | |
edd16368 | 1807 | if (is_hba_lunid(lunaddrbytes)) |
1f310bde | 1808 | hpsa_set_bus_target_lun(device, 3, 0, lunid & 0x3fff); |
edd16368 | 1809 | else |
1f310bde SC |
1810 | /* defer target, lun assignment for physical devices */ |
1811 | hpsa_set_bus_target_lun(device, 2, -1, -1); | |
1812 | return; | |
1813 | } | |
1814 | /* It's a logical device */ | |
4f4eb9f1 ST |
1815 | if (is_ext_target(h, device)) { |
1816 | /* external target way, put logicals on bus 1 | |
1f310bde SC |
1817 | * and match target/lun numbers box |
1818 | * reports, other smart array, bus 0, target 0, match lunid | |
1819 | */ | |
1820 | hpsa_set_bus_target_lun(device, | |
1821 | 1, (lunid >> 16) & 0x3fff, lunid & 0x00ff); | |
1822 | return; | |
edd16368 | 1823 | } |
1f310bde | 1824 | hpsa_set_bus_target_lun(device, 0, 0, lunid & 0x3fff); |
edd16368 SC |
1825 | } |
1826 | ||
1827 | /* | |
1828 | * If there is no lun 0 on a target, linux won't find any devices. | |
4f4eb9f1 | 1829 | * For the external targets (arrays), we have to manually detect the enclosure |
edd16368 SC |
1830 | * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report |
1831 | * it for some reason. *tmpdevice is the target we're adding, | |
1832 | * this_device is a pointer into the current element of currentsd[] | |
1833 | * that we're building up in update_scsi_devices(), below. | |
1834 | * lunzerobits is a bitmap that tracks which targets already have a | |
1835 | * lun 0 assigned. | |
1836 | * Returns 1 if an enclosure was added, 0 if not. | |
1837 | */ | |
4f4eb9f1 | 1838 | static int add_ext_target_dev(struct ctlr_info *h, |
edd16368 | 1839 | struct hpsa_scsi_dev_t *tmpdevice, |
01a02ffc | 1840 | struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes, |
4f4eb9f1 | 1841 | unsigned long lunzerobits[], int *n_ext_target_devs) |
edd16368 SC |
1842 | { |
1843 | unsigned char scsi3addr[8]; | |
1844 | ||
1f310bde | 1845 | if (test_bit(tmpdevice->target, lunzerobits)) |
edd16368 SC |
1846 | return 0; /* There is already a lun 0 on this target. */ |
1847 | ||
1848 | if (!is_logical_dev_addr_mode(lunaddrbytes)) | |
1849 | return 0; /* It's the logical targets that may lack lun 0. */ | |
1850 | ||
4f4eb9f1 ST |
1851 | if (!is_ext_target(h, tmpdevice)) |
1852 | return 0; /* Only external target devices have this problem. */ | |
edd16368 | 1853 | |
1f310bde | 1854 | if (tmpdevice->lun == 0) /* if lun is 0, then we have a lun 0. */ |
edd16368 SC |
1855 | return 0; |
1856 | ||
c4f8a299 | 1857 | memset(scsi3addr, 0, 8); |
1f310bde | 1858 | scsi3addr[3] = tmpdevice->target; |
edd16368 SC |
1859 | if (is_hba_lunid(scsi3addr)) |
1860 | return 0; /* Don't add the RAID controller here. */ | |
1861 | ||
339b2b14 SC |
1862 | if (is_scsi_rev_5(h)) |
1863 | return 0; /* p1210m doesn't need to do this. */ | |
1864 | ||
4f4eb9f1 | 1865 | if (*n_ext_target_devs >= MAX_EXT_TARGETS) { |
aca4a520 ST |
1866 | dev_warn(&h->pdev->dev, "Maximum number of external " |
1867 | "target devices exceeded. Check your hardware " | |
edd16368 SC |
1868 | "configuration."); |
1869 | return 0; | |
1870 | } | |
1871 | ||
0b0e1d6c | 1872 | if (hpsa_update_device_info(h, scsi3addr, this_device, NULL)) |
edd16368 | 1873 | return 0; |
4f4eb9f1 | 1874 | (*n_ext_target_devs)++; |
1f310bde SC |
1875 | hpsa_set_bus_target_lun(this_device, |
1876 | tmpdevice->bus, tmpdevice->target, 0); | |
1877 | set_bit(tmpdevice->target, lunzerobits); | |
edd16368 SC |
1878 | return 1; |
1879 | } | |
1880 | ||
1881 | /* | |
1882 | * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev, | |
1883 | * logdev. The number of luns in physdev and logdev are returned in | |
1884 | * *nphysicals and *nlogicals, respectively. | |
1885 | * Returns 0 on success, -1 otherwise. | |
1886 | */ | |
1887 | static int hpsa_gather_lun_info(struct ctlr_info *h, | |
1888 | int reportlunsize, | |
01a02ffc SC |
1889 | struct ReportLUNdata *physdev, u32 *nphysicals, |
1890 | struct ReportLUNdata *logdev, u32 *nlogicals) | |
edd16368 | 1891 | { |
a93aa1fe MG |
1892 | if (hpsa_scsi_do_report_phys_luns(h, physdev, reportlunsize, |
1893 | HPSA_REPORT_PHYS_EXTENDED)) { | |
edd16368 SC |
1894 | dev_err(&h->pdev->dev, "report physical LUNs failed.\n"); |
1895 | return -1; | |
1896 | } | |
a93aa1fe | 1897 | *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 24; |
edd16368 SC |
1898 | if (*nphysicals > HPSA_MAX_PHYS_LUN) { |
1899 | dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded." | |
1900 | " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, | |
1901 | *nphysicals - HPSA_MAX_PHYS_LUN); | |
1902 | *nphysicals = HPSA_MAX_PHYS_LUN; | |
1903 | } | |
1904 | if (hpsa_scsi_do_report_log_luns(h, logdev, reportlunsize)) { | |
1905 | dev_err(&h->pdev->dev, "report logical LUNs failed.\n"); | |
1906 | return -1; | |
1907 | } | |
6df1e954 | 1908 | *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8; |
edd16368 SC |
1909 | /* Reject Logicals in excess of our max capability. */ |
1910 | if (*nlogicals > HPSA_MAX_LUN) { | |
1911 | dev_warn(&h->pdev->dev, | |
1912 | "maximum logical LUNs (%d) exceeded. " | |
1913 | "%d LUNs ignored.\n", HPSA_MAX_LUN, | |
1914 | *nlogicals - HPSA_MAX_LUN); | |
1915 | *nlogicals = HPSA_MAX_LUN; | |
1916 | } | |
1917 | if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) { | |
1918 | dev_warn(&h->pdev->dev, | |
1919 | "maximum logical + physical LUNs (%d) exceeded. " | |
1920 | "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, | |
1921 | *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN); | |
1922 | *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals; | |
1923 | } | |
1924 | return 0; | |
1925 | } | |
1926 | ||
339b2b14 | 1927 | u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position, int i, |
a93aa1fe MG |
1928 | int nphysicals, int nlogicals, |
1929 | struct ReportExtendedLUNdata *physdev_list, | |
339b2b14 SC |
1930 | struct ReportLUNdata *logdev_list) |
1931 | { | |
1932 | /* Helper function, figure out where the LUN ID info is coming from | |
1933 | * given index i, lists of physical and logical devices, where in | |
1934 | * the list the raid controller is supposed to appear (first or last) | |
1935 | */ | |
1936 | ||
1937 | int logicals_start = nphysicals + (raid_ctlr_position == 0); | |
1938 | int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0); | |
1939 | ||
1940 | if (i == raid_ctlr_position) | |
1941 | return RAID_CTLR_LUNID; | |
1942 | ||
1943 | if (i < logicals_start) | |
1944 | return &physdev_list->LUN[i - (raid_ctlr_position == 0)][0]; | |
1945 | ||
1946 | if (i < last_device) | |
1947 | return &logdev_list->LUN[i - nphysicals - | |
1948 | (raid_ctlr_position == 0)][0]; | |
1949 | BUG(); | |
1950 | return NULL; | |
1951 | } | |
1952 | ||
edd16368 SC |
1953 | static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno) |
1954 | { | |
1955 | /* the idea here is we could get notified | |
1956 | * that some devices have changed, so we do a report | |
1957 | * physical luns and report logical luns cmd, and adjust | |
1958 | * our list of devices accordingly. | |
1959 | * | |
1960 | * The scsi3addr's of devices won't change so long as the | |
1961 | * adapter is not reset. That means we can rescan and | |
1962 | * tell which devices we already know about, vs. new | |
1963 | * devices, vs. disappearing devices. | |
1964 | */ | |
a93aa1fe | 1965 | struct ReportExtendedLUNdata *physdev_list = NULL; |
edd16368 | 1966 | struct ReportLUNdata *logdev_list = NULL; |
01a02ffc SC |
1967 | u32 nphysicals = 0; |
1968 | u32 nlogicals = 0; | |
1969 | u32 ndev_allocated = 0; | |
edd16368 SC |
1970 | struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice; |
1971 | int ncurrent = 0; | |
1972 | int reportlunsize = sizeof(*physdev_list) + HPSA_MAX_PHYS_LUN * 8; | |
4f4eb9f1 | 1973 | int i, n_ext_target_devs, ndevs_to_allocate; |
339b2b14 | 1974 | int raid_ctlr_position; |
aca4a520 | 1975 | DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS); |
edd16368 | 1976 | |
cfe5badc | 1977 | currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_DEVICES, GFP_KERNEL); |
edd16368 SC |
1978 | physdev_list = kzalloc(reportlunsize, GFP_KERNEL); |
1979 | logdev_list = kzalloc(reportlunsize, GFP_KERNEL); | |
edd16368 SC |
1980 | tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL); |
1981 | ||
0b0e1d6c | 1982 | if (!currentsd || !physdev_list || !logdev_list || !tmpdevice) { |
edd16368 SC |
1983 | dev_err(&h->pdev->dev, "out of memory\n"); |
1984 | goto out; | |
1985 | } | |
1986 | memset(lunzerobits, 0, sizeof(lunzerobits)); | |
1987 | ||
a93aa1fe MG |
1988 | if (hpsa_gather_lun_info(h, reportlunsize, |
1989 | (struct ReportLUNdata *) physdev_list, &nphysicals, | |
edd16368 SC |
1990 | logdev_list, &nlogicals)) |
1991 | goto out; | |
1992 | ||
aca4a520 ST |
1993 | /* We might see up to the maximum number of logical and physical disks |
1994 | * plus external target devices, and a device for the local RAID | |
1995 | * controller. | |
edd16368 | 1996 | */ |
aca4a520 | 1997 | ndevs_to_allocate = nphysicals + nlogicals + MAX_EXT_TARGETS + 1; |
edd16368 SC |
1998 | |
1999 | /* Allocate the per device structures */ | |
2000 | for (i = 0; i < ndevs_to_allocate; i++) { | |
b7ec021f ST |
2001 | if (i >= HPSA_MAX_DEVICES) { |
2002 | dev_warn(&h->pdev->dev, "maximum devices (%d) exceeded." | |
2003 | " %d devices ignored.\n", HPSA_MAX_DEVICES, | |
2004 | ndevs_to_allocate - HPSA_MAX_DEVICES); | |
2005 | break; | |
2006 | } | |
2007 | ||
edd16368 SC |
2008 | currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL); |
2009 | if (!currentsd[i]) { | |
2010 | dev_warn(&h->pdev->dev, "out of memory at %s:%d\n", | |
2011 | __FILE__, __LINE__); | |
2012 | goto out; | |
2013 | } | |
2014 | ndev_allocated++; | |
2015 | } | |
2016 | ||
339b2b14 SC |
2017 | if (unlikely(is_scsi_rev_5(h))) |
2018 | raid_ctlr_position = 0; | |
2019 | else | |
2020 | raid_ctlr_position = nphysicals + nlogicals; | |
2021 | ||
edd16368 | 2022 | /* adjust our table of devices */ |
4f4eb9f1 | 2023 | n_ext_target_devs = 0; |
edd16368 | 2024 | for (i = 0; i < nphysicals + nlogicals + 1; i++) { |
0b0e1d6c | 2025 | u8 *lunaddrbytes, is_OBDR = 0; |
edd16368 SC |
2026 | |
2027 | /* Figure out where the LUN ID info is coming from */ | |
339b2b14 SC |
2028 | lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position, |
2029 | i, nphysicals, nlogicals, physdev_list, logdev_list); | |
edd16368 | 2030 | /* skip masked physical devices. */ |
339b2b14 SC |
2031 | if (lunaddrbytes[3] & 0xC0 && |
2032 | i < nphysicals + (raid_ctlr_position == 0)) | |
edd16368 SC |
2033 | continue; |
2034 | ||
2035 | /* Get device type, vendor, model, device id */ | |
0b0e1d6c SC |
2036 | if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice, |
2037 | &is_OBDR)) | |
edd16368 | 2038 | continue; /* skip it if we can't talk to it. */ |
1f310bde | 2039 | figure_bus_target_lun(h, lunaddrbytes, tmpdevice); |
edd16368 SC |
2040 | this_device = currentsd[ncurrent]; |
2041 | ||
2042 | /* | |
4f4eb9f1 | 2043 | * For external target devices, we have to insert a LUN 0 which |
edd16368 SC |
2044 | * doesn't show up in CCISS_REPORT_PHYSICAL data, but there |
2045 | * is nonetheless an enclosure device there. We have to | |
2046 | * present that otherwise linux won't find anything if | |
2047 | * there is no lun 0. | |
2048 | */ | |
4f4eb9f1 | 2049 | if (add_ext_target_dev(h, tmpdevice, this_device, |
1f310bde | 2050 | lunaddrbytes, lunzerobits, |
4f4eb9f1 | 2051 | &n_ext_target_devs)) { |
edd16368 SC |
2052 | ncurrent++; |
2053 | this_device = currentsd[ncurrent]; | |
2054 | } | |
2055 | ||
2056 | *this_device = *tmpdevice; | |
edd16368 SC |
2057 | |
2058 | switch (this_device->devtype) { | |
0b0e1d6c | 2059 | case TYPE_ROM: |
edd16368 SC |
2060 | /* We don't *really* support actual CD-ROM devices, |
2061 | * just "One Button Disaster Recovery" tape drive | |
2062 | * which temporarily pretends to be a CD-ROM drive. | |
2063 | * So we check that the device is really an OBDR tape | |
2064 | * device by checking for "$DR-10" in bytes 43-48 of | |
2065 | * the inquiry data. | |
2066 | */ | |
0b0e1d6c SC |
2067 | if (is_OBDR) |
2068 | ncurrent++; | |
edd16368 SC |
2069 | break; |
2070 | case TYPE_DISK: | |
2071 | if (i < nphysicals) | |
2072 | break; | |
2073 | ncurrent++; | |
2074 | break; | |
2075 | case TYPE_TAPE: | |
2076 | case TYPE_MEDIUM_CHANGER: | |
2077 | ncurrent++; | |
2078 | break; | |
2079 | case TYPE_RAID: | |
2080 | /* Only present the Smartarray HBA as a RAID controller. | |
2081 | * If it's a RAID controller other than the HBA itself | |
2082 | * (an external RAID controller, MSA500 or similar) | |
2083 | * don't present it. | |
2084 | */ | |
2085 | if (!is_hba_lunid(lunaddrbytes)) | |
2086 | break; | |
2087 | ncurrent++; | |
2088 | break; | |
2089 | default: | |
2090 | break; | |
2091 | } | |
cfe5badc | 2092 | if (ncurrent >= HPSA_MAX_DEVICES) |
edd16368 SC |
2093 | break; |
2094 | } | |
2095 | adjust_hpsa_scsi_table(h, hostno, currentsd, ncurrent); | |
2096 | out: | |
2097 | kfree(tmpdevice); | |
2098 | for (i = 0; i < ndev_allocated; i++) | |
2099 | kfree(currentsd[i]); | |
2100 | kfree(currentsd); | |
edd16368 SC |
2101 | kfree(physdev_list); |
2102 | kfree(logdev_list); | |
edd16368 SC |
2103 | } |
2104 | ||
2105 | /* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci | |
2106 | * dma mapping and fills in the scatter gather entries of the | |
2107 | * hpsa command, cp. | |
2108 | */ | |
33a2ffce | 2109 | static int hpsa_scatter_gather(struct ctlr_info *h, |
edd16368 SC |
2110 | struct CommandList *cp, |
2111 | struct scsi_cmnd *cmd) | |
2112 | { | |
2113 | unsigned int len; | |
2114 | struct scatterlist *sg; | |
01a02ffc | 2115 | u64 addr64; |
33a2ffce SC |
2116 | int use_sg, i, sg_index, chained; |
2117 | struct SGDescriptor *curr_sg; | |
edd16368 | 2118 | |
33a2ffce | 2119 | BUG_ON(scsi_sg_count(cmd) > h->maxsgentries); |
edd16368 SC |
2120 | |
2121 | use_sg = scsi_dma_map(cmd); | |
2122 | if (use_sg < 0) | |
2123 | return use_sg; | |
2124 | ||
2125 | if (!use_sg) | |
2126 | goto sglist_finished; | |
2127 | ||
33a2ffce SC |
2128 | curr_sg = cp->SG; |
2129 | chained = 0; | |
2130 | sg_index = 0; | |
edd16368 | 2131 | scsi_for_each_sg(cmd, sg, use_sg, i) { |
33a2ffce SC |
2132 | if (i == h->max_cmd_sg_entries - 1 && |
2133 | use_sg > h->max_cmd_sg_entries) { | |
2134 | chained = 1; | |
2135 | curr_sg = h->cmd_sg_list[cp->cmdindex]; | |
2136 | sg_index = 0; | |
2137 | } | |
01a02ffc | 2138 | addr64 = (u64) sg_dma_address(sg); |
edd16368 | 2139 | len = sg_dma_len(sg); |
33a2ffce SC |
2140 | curr_sg->Addr.lower = (u32) (addr64 & 0x0FFFFFFFFULL); |
2141 | curr_sg->Addr.upper = (u32) ((addr64 >> 32) & 0x0FFFFFFFFULL); | |
2142 | curr_sg->Len = len; | |
e1d9cbfa | 2143 | curr_sg->Ext = (i < scsi_sg_count(cmd) - 1) ? 0 : HPSA_SG_LAST; |
33a2ffce SC |
2144 | curr_sg++; |
2145 | } | |
2146 | ||
2147 | if (use_sg + chained > h->maxSG) | |
2148 | h->maxSG = use_sg + chained; | |
2149 | ||
2150 | if (chained) { | |
2151 | cp->Header.SGList = h->max_cmd_sg_entries; | |
2152 | cp->Header.SGTotal = (u16) (use_sg + 1); | |
e2bea6df SC |
2153 | if (hpsa_map_sg_chain_block(h, cp)) { |
2154 | scsi_dma_unmap(cmd); | |
2155 | return -1; | |
2156 | } | |
33a2ffce | 2157 | return 0; |
edd16368 SC |
2158 | } |
2159 | ||
2160 | sglist_finished: | |
2161 | ||
01a02ffc SC |
2162 | cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */ |
2163 | cp->Header.SGTotal = (u16) use_sg; /* total sgs in this cmd list */ | |
edd16368 SC |
2164 | return 0; |
2165 | } | |
2166 | ||
2167 | ||
f281233d | 2168 | static int hpsa_scsi_queue_command_lck(struct scsi_cmnd *cmd, |
edd16368 SC |
2169 | void (*done)(struct scsi_cmnd *)) |
2170 | { | |
2171 | struct ctlr_info *h; | |
2172 | struct hpsa_scsi_dev_t *dev; | |
2173 | unsigned char scsi3addr[8]; | |
2174 | struct CommandList *c; | |
2175 | unsigned long flags; | |
2176 | ||
2177 | /* Get the ptr to our adapter structure out of cmd->host. */ | |
2178 | h = sdev_to_hba(cmd->device); | |
2179 | dev = cmd->device->hostdata; | |
2180 | if (!dev) { | |
2181 | cmd->result = DID_NO_CONNECT << 16; | |
2182 | done(cmd); | |
2183 | return 0; | |
2184 | } | |
2185 | memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr)); | |
2186 | ||
edd16368 | 2187 | spin_lock_irqsave(&h->lock, flags); |
a0c12413 SC |
2188 | if (unlikely(h->lockup_detected)) { |
2189 | spin_unlock_irqrestore(&h->lock, flags); | |
2190 | cmd->result = DID_ERROR << 16; | |
2191 | done(cmd); | |
2192 | return 0; | |
2193 | } | |
edd16368 | 2194 | spin_unlock_irqrestore(&h->lock, flags); |
e16a33ad | 2195 | c = cmd_alloc(h); |
edd16368 SC |
2196 | if (c == NULL) { /* trouble... */ |
2197 | dev_err(&h->pdev->dev, "cmd_alloc returned NULL!\n"); | |
2198 | return SCSI_MLQUEUE_HOST_BUSY; | |
2199 | } | |
2200 | ||
2201 | /* Fill in the command list header */ | |
2202 | ||
2203 | cmd->scsi_done = done; /* save this for use by completion code */ | |
2204 | ||
2205 | /* save c in case we have to abort it */ | |
2206 | cmd->host_scribble = (unsigned char *) c; | |
2207 | ||
2208 | c->cmd_type = CMD_SCSI; | |
2209 | c->scsi_cmd = cmd; | |
2210 | c->Header.ReplyQueue = 0; /* unused in simple mode */ | |
2211 | memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8); | |
303932fd DB |
2212 | c->Header.Tag.lower = (c->cmdindex << DIRECT_LOOKUP_SHIFT); |
2213 | c->Header.Tag.lower |= DIRECT_LOOKUP_BIT; | |
edd16368 SC |
2214 | |
2215 | /* Fill in the request block... */ | |
2216 | ||
2217 | c->Request.Timeout = 0; | |
2218 | memset(c->Request.CDB, 0, sizeof(c->Request.CDB)); | |
2219 | BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB)); | |
2220 | c->Request.CDBLen = cmd->cmd_len; | |
2221 | memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len); | |
2222 | c->Request.Type.Type = TYPE_CMD; | |
2223 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2224 | switch (cmd->sc_data_direction) { | |
2225 | case DMA_TO_DEVICE: | |
2226 | c->Request.Type.Direction = XFER_WRITE; | |
2227 | break; | |
2228 | case DMA_FROM_DEVICE: | |
2229 | c->Request.Type.Direction = XFER_READ; | |
2230 | break; | |
2231 | case DMA_NONE: | |
2232 | c->Request.Type.Direction = XFER_NONE; | |
2233 | break; | |
2234 | case DMA_BIDIRECTIONAL: | |
2235 | /* This can happen if a buggy application does a scsi passthru | |
2236 | * and sets both inlen and outlen to non-zero. ( see | |
2237 | * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() ) | |
2238 | */ | |
2239 | ||
2240 | c->Request.Type.Direction = XFER_RSVD; | |
2241 | /* This is technically wrong, and hpsa controllers should | |
2242 | * reject it with CMD_INVALID, which is the most correct | |
2243 | * response, but non-fibre backends appear to let it | |
2244 | * slide by, and give the same results as if this field | |
2245 | * were set correctly. Either way is acceptable for | |
2246 | * our purposes here. | |
2247 | */ | |
2248 | ||
2249 | break; | |
2250 | ||
2251 | default: | |
2252 | dev_err(&h->pdev->dev, "unknown data direction: %d\n", | |
2253 | cmd->sc_data_direction); | |
2254 | BUG(); | |
2255 | break; | |
2256 | } | |
2257 | ||
33a2ffce | 2258 | if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */ |
edd16368 SC |
2259 | cmd_free(h, c); |
2260 | return SCSI_MLQUEUE_HOST_BUSY; | |
2261 | } | |
2262 | enqueue_cmd_and_start_io(h, c); | |
2263 | /* the cmd'll come back via intr handler in complete_scsi_command() */ | |
2264 | return 0; | |
2265 | } | |
2266 | ||
f281233d JG |
2267 | static DEF_SCSI_QCMD(hpsa_scsi_queue_command) |
2268 | ||
a08a8471 SC |
2269 | static void hpsa_scan_start(struct Scsi_Host *sh) |
2270 | { | |
2271 | struct ctlr_info *h = shost_to_hba(sh); | |
2272 | unsigned long flags; | |
2273 | ||
2274 | /* wait until any scan already in progress is finished. */ | |
2275 | while (1) { | |
2276 | spin_lock_irqsave(&h->scan_lock, flags); | |
2277 | if (h->scan_finished) | |
2278 | break; | |
2279 | spin_unlock_irqrestore(&h->scan_lock, flags); | |
2280 | wait_event(h->scan_wait_queue, h->scan_finished); | |
2281 | /* Note: We don't need to worry about a race between this | |
2282 | * thread and driver unload because the midlayer will | |
2283 | * have incremented the reference count, so unload won't | |
2284 | * happen if we're in here. | |
2285 | */ | |
2286 | } | |
2287 | h->scan_finished = 0; /* mark scan as in progress */ | |
2288 | spin_unlock_irqrestore(&h->scan_lock, flags); | |
2289 | ||
2290 | hpsa_update_scsi_devices(h, h->scsi_host->host_no); | |
2291 | ||
2292 | spin_lock_irqsave(&h->scan_lock, flags); | |
2293 | h->scan_finished = 1; /* mark scan as finished. */ | |
2294 | wake_up_all(&h->scan_wait_queue); | |
2295 | spin_unlock_irqrestore(&h->scan_lock, flags); | |
2296 | } | |
2297 | ||
2298 | static int hpsa_scan_finished(struct Scsi_Host *sh, | |
2299 | unsigned long elapsed_time) | |
2300 | { | |
2301 | struct ctlr_info *h = shost_to_hba(sh); | |
2302 | unsigned long flags; | |
2303 | int finished; | |
2304 | ||
2305 | spin_lock_irqsave(&h->scan_lock, flags); | |
2306 | finished = h->scan_finished; | |
2307 | spin_unlock_irqrestore(&h->scan_lock, flags); | |
2308 | return finished; | |
2309 | } | |
2310 | ||
667e23d4 SC |
2311 | static int hpsa_change_queue_depth(struct scsi_device *sdev, |
2312 | int qdepth, int reason) | |
2313 | { | |
2314 | struct ctlr_info *h = sdev_to_hba(sdev); | |
2315 | ||
2316 | if (reason != SCSI_QDEPTH_DEFAULT) | |
2317 | return -ENOTSUPP; | |
2318 | ||
2319 | if (qdepth < 1) | |
2320 | qdepth = 1; | |
2321 | else | |
2322 | if (qdepth > h->nr_cmds) | |
2323 | qdepth = h->nr_cmds; | |
2324 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); | |
2325 | return sdev->queue_depth; | |
2326 | } | |
2327 | ||
edd16368 SC |
2328 | static void hpsa_unregister_scsi(struct ctlr_info *h) |
2329 | { | |
2330 | /* we are being forcibly unloaded, and may not refuse. */ | |
2331 | scsi_remove_host(h->scsi_host); | |
2332 | scsi_host_put(h->scsi_host); | |
2333 | h->scsi_host = NULL; | |
2334 | } | |
2335 | ||
2336 | static int hpsa_register_scsi(struct ctlr_info *h) | |
2337 | { | |
b705690d SC |
2338 | struct Scsi_Host *sh; |
2339 | int error; | |
edd16368 | 2340 | |
b705690d SC |
2341 | sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h)); |
2342 | if (sh == NULL) | |
2343 | goto fail; | |
2344 | ||
2345 | sh->io_port = 0; | |
2346 | sh->n_io_port = 0; | |
2347 | sh->this_id = -1; | |
2348 | sh->max_channel = 3; | |
2349 | sh->max_cmd_len = MAX_COMMAND_SIZE; | |
2350 | sh->max_lun = HPSA_MAX_LUN; | |
2351 | sh->max_id = HPSA_MAX_LUN; | |
2352 | sh->can_queue = h->nr_cmds; | |
2353 | sh->cmd_per_lun = h->nr_cmds; | |
2354 | sh->sg_tablesize = h->maxsgentries; | |
2355 | h->scsi_host = sh; | |
2356 | sh->hostdata[0] = (unsigned long) h; | |
2357 | sh->irq = h->intr[h->intr_mode]; | |
2358 | sh->unique_id = sh->irq; | |
2359 | error = scsi_add_host(sh, &h->pdev->dev); | |
2360 | if (error) | |
2361 | goto fail_host_put; | |
2362 | scsi_scan_host(sh); | |
2363 | return 0; | |
2364 | ||
2365 | fail_host_put: | |
2366 | dev_err(&h->pdev->dev, "%s: scsi_add_host" | |
2367 | " failed for controller %d\n", __func__, h->ctlr); | |
2368 | scsi_host_put(sh); | |
2369 | return error; | |
2370 | fail: | |
2371 | dev_err(&h->pdev->dev, "%s: scsi_host_alloc" | |
2372 | " failed for controller %d\n", __func__, h->ctlr); | |
2373 | return -ENOMEM; | |
edd16368 SC |
2374 | } |
2375 | ||
2376 | static int wait_for_device_to_become_ready(struct ctlr_info *h, | |
2377 | unsigned char lunaddr[]) | |
2378 | { | |
2379 | int rc = 0; | |
2380 | int count = 0; | |
2381 | int waittime = 1; /* seconds */ | |
2382 | struct CommandList *c; | |
2383 | ||
2384 | c = cmd_special_alloc(h); | |
2385 | if (!c) { | |
2386 | dev_warn(&h->pdev->dev, "out of memory in " | |
2387 | "wait_for_device_to_become_ready.\n"); | |
2388 | return IO_ERROR; | |
2389 | } | |
2390 | ||
2391 | /* Send test unit ready until device ready, or give up. */ | |
2392 | while (count < HPSA_TUR_RETRY_LIMIT) { | |
2393 | ||
2394 | /* Wait for a bit. do this first, because if we send | |
2395 | * the TUR right away, the reset will just abort it. | |
2396 | */ | |
2397 | msleep(1000 * waittime); | |
2398 | count++; | |
2399 | ||
2400 | /* Increase wait time with each try, up to a point. */ | |
2401 | if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS) | |
2402 | waittime = waittime * 2; | |
2403 | ||
a2dac136 SC |
2404 | /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */ |
2405 | (void) fill_cmd(c, TEST_UNIT_READY, h, | |
2406 | NULL, 0, 0, lunaddr, TYPE_CMD); | |
edd16368 SC |
2407 | hpsa_scsi_do_simple_cmd_core(h, c); |
2408 | /* no unmap needed here because no data xfer. */ | |
2409 | ||
2410 | if (c->err_info->CommandStatus == CMD_SUCCESS) | |
2411 | break; | |
2412 | ||
2413 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && | |
2414 | c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION && | |
2415 | (c->err_info->SenseInfo[2] == NO_SENSE || | |
2416 | c->err_info->SenseInfo[2] == UNIT_ATTENTION)) | |
2417 | break; | |
2418 | ||
2419 | dev_warn(&h->pdev->dev, "waiting %d secs " | |
2420 | "for device to become ready.\n", waittime); | |
2421 | rc = 1; /* device not ready. */ | |
2422 | } | |
2423 | ||
2424 | if (rc) | |
2425 | dev_warn(&h->pdev->dev, "giving up on device.\n"); | |
2426 | else | |
2427 | dev_warn(&h->pdev->dev, "device is ready.\n"); | |
2428 | ||
2429 | cmd_special_free(h, c); | |
2430 | return rc; | |
2431 | } | |
2432 | ||
2433 | /* Need at least one of these error handlers to keep ../scsi/hosts.c from | |
2434 | * complaining. Doing a host- or bus-reset can't do anything good here. | |
2435 | */ | |
2436 | static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) | |
2437 | { | |
2438 | int rc; | |
2439 | struct ctlr_info *h; | |
2440 | struct hpsa_scsi_dev_t *dev; | |
2441 | ||
2442 | /* find the controller to which the command to be aborted was sent */ | |
2443 | h = sdev_to_hba(scsicmd->device); | |
2444 | if (h == NULL) /* paranoia */ | |
2445 | return FAILED; | |
edd16368 SC |
2446 | dev = scsicmd->device->hostdata; |
2447 | if (!dev) { | |
2448 | dev_err(&h->pdev->dev, "hpsa_eh_device_reset_handler: " | |
2449 | "device lookup failed.\n"); | |
2450 | return FAILED; | |
2451 | } | |
d416b0c7 SC |
2452 | dev_warn(&h->pdev->dev, "resetting device %d:%d:%d:%d\n", |
2453 | h->scsi_host->host_no, dev->bus, dev->target, dev->lun); | |
edd16368 SC |
2454 | /* send a reset to the SCSI LUN which the command was sent to */ |
2455 | rc = hpsa_send_reset(h, dev->scsi3addr); | |
2456 | if (rc == 0 && wait_for_device_to_become_ready(h, dev->scsi3addr) == 0) | |
2457 | return SUCCESS; | |
2458 | ||
2459 | dev_warn(&h->pdev->dev, "resetting device failed.\n"); | |
2460 | return FAILED; | |
2461 | } | |
2462 | ||
6cba3f19 SC |
2463 | static void swizzle_abort_tag(u8 *tag) |
2464 | { | |
2465 | u8 original_tag[8]; | |
2466 | ||
2467 | memcpy(original_tag, tag, 8); | |
2468 | tag[0] = original_tag[3]; | |
2469 | tag[1] = original_tag[2]; | |
2470 | tag[2] = original_tag[1]; | |
2471 | tag[3] = original_tag[0]; | |
2472 | tag[4] = original_tag[7]; | |
2473 | tag[5] = original_tag[6]; | |
2474 | tag[6] = original_tag[5]; | |
2475 | tag[7] = original_tag[4]; | |
2476 | } | |
2477 | ||
75167d2c | 2478 | static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr, |
6cba3f19 | 2479 | struct CommandList *abort, int swizzle) |
75167d2c SC |
2480 | { |
2481 | int rc = IO_OK; | |
2482 | struct CommandList *c; | |
2483 | struct ErrorInfo *ei; | |
2484 | ||
2485 | c = cmd_special_alloc(h); | |
2486 | if (c == NULL) { /* trouble... */ | |
2487 | dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); | |
2488 | return -ENOMEM; | |
2489 | } | |
2490 | ||
a2dac136 SC |
2491 | /* fill_cmd can't fail here, no buffer to map */ |
2492 | (void) fill_cmd(c, HPSA_ABORT_MSG, h, abort, | |
2493 | 0, 0, scsi3addr, TYPE_MSG); | |
6cba3f19 SC |
2494 | if (swizzle) |
2495 | swizzle_abort_tag(&c->Request.CDB[4]); | |
75167d2c SC |
2496 | hpsa_scsi_do_simple_cmd_core(h, c); |
2497 | dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: do_simple_cmd_core completed.\n", | |
2498 | __func__, abort->Header.Tag.upper, abort->Header.Tag.lower); | |
2499 | /* no unmap needed here because no data xfer. */ | |
2500 | ||
2501 | ei = c->err_info; | |
2502 | switch (ei->CommandStatus) { | |
2503 | case CMD_SUCCESS: | |
2504 | break; | |
2505 | case CMD_UNABORTABLE: /* Very common, don't make noise. */ | |
2506 | rc = -1; | |
2507 | break; | |
2508 | default: | |
2509 | dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: interpreting error.\n", | |
2510 | __func__, abort->Header.Tag.upper, | |
2511 | abort->Header.Tag.lower); | |
2512 | hpsa_scsi_interpret_error(c); | |
2513 | rc = -1; | |
2514 | break; | |
2515 | } | |
2516 | cmd_special_free(h, c); | |
2517 | dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n", __func__, | |
2518 | abort->Header.Tag.upper, abort->Header.Tag.lower); | |
2519 | return rc; | |
2520 | } | |
2521 | ||
2522 | /* | |
2523 | * hpsa_find_cmd_in_queue | |
2524 | * | |
2525 | * Used to determine whether a command (find) is still present | |
2526 | * in queue_head. Optionally excludes the last element of queue_head. | |
2527 | * | |
2528 | * This is used to avoid unnecessary aborts. Commands in h->reqQ have | |
2529 | * not yet been submitted, and so can be aborted by the driver without | |
2530 | * sending an abort to the hardware. | |
2531 | * | |
2532 | * Returns pointer to command if found in queue, NULL otherwise. | |
2533 | */ | |
2534 | static struct CommandList *hpsa_find_cmd_in_queue(struct ctlr_info *h, | |
2535 | struct scsi_cmnd *find, struct list_head *queue_head) | |
2536 | { | |
2537 | unsigned long flags; | |
2538 | struct CommandList *c = NULL; /* ptr into cmpQ */ | |
2539 | ||
2540 | if (!find) | |
2541 | return 0; | |
2542 | spin_lock_irqsave(&h->lock, flags); | |
2543 | list_for_each_entry(c, queue_head, list) { | |
2544 | if (c->scsi_cmd == NULL) /* e.g.: passthru ioctl */ | |
2545 | continue; | |
2546 | if (c->scsi_cmd == find) { | |
2547 | spin_unlock_irqrestore(&h->lock, flags); | |
2548 | return c; | |
2549 | } | |
2550 | } | |
2551 | spin_unlock_irqrestore(&h->lock, flags); | |
2552 | return NULL; | |
2553 | } | |
2554 | ||
6cba3f19 SC |
2555 | static struct CommandList *hpsa_find_cmd_in_queue_by_tag(struct ctlr_info *h, |
2556 | u8 *tag, struct list_head *queue_head) | |
2557 | { | |
2558 | unsigned long flags; | |
2559 | struct CommandList *c; | |
2560 | ||
2561 | spin_lock_irqsave(&h->lock, flags); | |
2562 | list_for_each_entry(c, queue_head, list) { | |
2563 | if (memcmp(&c->Header.Tag, tag, 8) != 0) | |
2564 | continue; | |
2565 | spin_unlock_irqrestore(&h->lock, flags); | |
2566 | return c; | |
2567 | } | |
2568 | spin_unlock_irqrestore(&h->lock, flags); | |
2569 | return NULL; | |
2570 | } | |
2571 | ||
2572 | /* Some Smart Arrays need the abort tag swizzled, and some don't. It's hard to | |
2573 | * tell which kind we're dealing with, so we send the abort both ways. There | |
2574 | * shouldn't be any collisions between swizzled and unswizzled tags due to the | |
2575 | * way we construct our tags but we check anyway in case the assumptions which | |
2576 | * make this true someday become false. | |
2577 | */ | |
2578 | static int hpsa_send_abort_both_ways(struct ctlr_info *h, | |
2579 | unsigned char *scsi3addr, struct CommandList *abort) | |
2580 | { | |
2581 | u8 swizzled_tag[8]; | |
2582 | struct CommandList *c; | |
2583 | int rc = 0, rc2 = 0; | |
2584 | ||
2585 | /* we do not expect to find the swizzled tag in our queue, but | |
2586 | * check anyway just to be sure the assumptions which make this | |
2587 | * the case haven't become wrong. | |
2588 | */ | |
2589 | memcpy(swizzled_tag, &abort->Request.CDB[4], 8); | |
2590 | swizzle_abort_tag(swizzled_tag); | |
2591 | c = hpsa_find_cmd_in_queue_by_tag(h, swizzled_tag, &h->cmpQ); | |
2592 | if (c != NULL) { | |
2593 | dev_warn(&h->pdev->dev, "Unexpectedly found byte-swapped tag in completion queue.\n"); | |
2594 | return hpsa_send_abort(h, scsi3addr, abort, 0); | |
2595 | } | |
2596 | rc = hpsa_send_abort(h, scsi3addr, abort, 0); | |
2597 | ||
2598 | /* if the command is still in our queue, we can't conclude that it was | |
2599 | * aborted (it might have just completed normally) but in any case | |
2600 | * we don't need to try to abort it another way. | |
2601 | */ | |
2602 | c = hpsa_find_cmd_in_queue(h, abort->scsi_cmd, &h->cmpQ); | |
2603 | if (c) | |
2604 | rc2 = hpsa_send_abort(h, scsi3addr, abort, 1); | |
2605 | return rc && rc2; | |
2606 | } | |
2607 | ||
75167d2c SC |
2608 | /* Send an abort for the specified command. |
2609 | * If the device and controller support it, | |
2610 | * send a task abort request. | |
2611 | */ | |
2612 | static int hpsa_eh_abort_handler(struct scsi_cmnd *sc) | |
2613 | { | |
2614 | ||
2615 | int i, rc; | |
2616 | struct ctlr_info *h; | |
2617 | struct hpsa_scsi_dev_t *dev; | |
2618 | struct CommandList *abort; /* pointer to command to be aborted */ | |
2619 | struct CommandList *found; | |
2620 | struct scsi_cmnd *as; /* ptr to scsi cmd inside aborted command. */ | |
2621 | char msg[256]; /* For debug messaging. */ | |
2622 | int ml = 0; | |
2623 | ||
2624 | /* Find the controller of the command to be aborted */ | |
2625 | h = sdev_to_hba(sc->device); | |
2626 | if (WARN(h == NULL, | |
2627 | "ABORT REQUEST FAILED, Controller lookup failed.\n")) | |
2628 | return FAILED; | |
2629 | ||
2630 | /* Check that controller supports some kind of task abort */ | |
2631 | if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags) && | |
2632 | !(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags)) | |
2633 | return FAILED; | |
2634 | ||
2635 | memset(msg, 0, sizeof(msg)); | |
2636 | ml += sprintf(msg+ml, "ABORT REQUEST on C%d:B%d:T%d:L%d ", | |
2637 | h->scsi_host->host_no, sc->device->channel, | |
2638 | sc->device->id, sc->device->lun); | |
2639 | ||
2640 | /* Find the device of the command to be aborted */ | |
2641 | dev = sc->device->hostdata; | |
2642 | if (!dev) { | |
2643 | dev_err(&h->pdev->dev, "%s FAILED, Device lookup failed.\n", | |
2644 | msg); | |
2645 | return FAILED; | |
2646 | } | |
2647 | ||
2648 | /* Get SCSI command to be aborted */ | |
2649 | abort = (struct CommandList *) sc->host_scribble; | |
2650 | if (abort == NULL) { | |
2651 | dev_err(&h->pdev->dev, "%s FAILED, Command to abort is NULL.\n", | |
2652 | msg); | |
2653 | return FAILED; | |
2654 | } | |
2655 | ||
2656 | ml += sprintf(msg+ml, "Tag:0x%08x:%08x ", | |
2657 | abort->Header.Tag.upper, abort->Header.Tag.lower); | |
2658 | as = (struct scsi_cmnd *) abort->scsi_cmd; | |
2659 | if (as != NULL) | |
2660 | ml += sprintf(msg+ml, "Command:0x%x SN:0x%lx ", | |
2661 | as->cmnd[0], as->serial_number); | |
2662 | dev_dbg(&h->pdev->dev, "%s\n", msg); | |
2663 | dev_warn(&h->pdev->dev, "Abort request on C%d:B%d:T%d:L%d\n", | |
2664 | h->scsi_host->host_no, dev->bus, dev->target, dev->lun); | |
2665 | ||
2666 | /* Search reqQ to See if command is queued but not submitted, | |
2667 | * if so, complete the command with aborted status and remove | |
2668 | * it from the reqQ. | |
2669 | */ | |
2670 | found = hpsa_find_cmd_in_queue(h, sc, &h->reqQ); | |
2671 | if (found) { | |
2672 | found->err_info->CommandStatus = CMD_ABORTED; | |
2673 | finish_cmd(found); | |
2674 | dev_info(&h->pdev->dev, "%s Request SUCCEEDED (driver queue).\n", | |
2675 | msg); | |
2676 | return SUCCESS; | |
2677 | } | |
2678 | ||
2679 | /* not in reqQ, if also not in cmpQ, must have already completed */ | |
2680 | found = hpsa_find_cmd_in_queue(h, sc, &h->cmpQ); | |
2681 | if (!found) { | |
d6ebd0f7 | 2682 | dev_dbg(&h->pdev->dev, "%s Request SUCCEEDED (not known to driver).\n", |
75167d2c SC |
2683 | msg); |
2684 | return SUCCESS; | |
2685 | } | |
2686 | ||
2687 | /* | |
2688 | * Command is in flight, or possibly already completed | |
2689 | * by the firmware (but not to the scsi mid layer) but we can't | |
2690 | * distinguish which. Send the abort down. | |
2691 | */ | |
6cba3f19 | 2692 | rc = hpsa_send_abort_both_ways(h, dev->scsi3addr, abort); |
75167d2c SC |
2693 | if (rc != 0) { |
2694 | dev_dbg(&h->pdev->dev, "%s Request FAILED.\n", msg); | |
2695 | dev_warn(&h->pdev->dev, "FAILED abort on device C%d:B%d:T%d:L%d\n", | |
2696 | h->scsi_host->host_no, | |
2697 | dev->bus, dev->target, dev->lun); | |
2698 | return FAILED; | |
2699 | } | |
2700 | dev_info(&h->pdev->dev, "%s REQUEST SUCCEEDED.\n", msg); | |
2701 | ||
2702 | /* If the abort(s) above completed and actually aborted the | |
2703 | * command, then the command to be aborted should already be | |
2704 | * completed. If not, wait around a bit more to see if they | |
2705 | * manage to complete normally. | |
2706 | */ | |
2707 | #define ABORT_COMPLETE_WAIT_SECS 30 | |
2708 | for (i = 0; i < ABORT_COMPLETE_WAIT_SECS * 10; i++) { | |
2709 | found = hpsa_find_cmd_in_queue(h, sc, &h->cmpQ); | |
2710 | if (!found) | |
2711 | return SUCCESS; | |
2712 | msleep(100); | |
2713 | } | |
2714 | dev_warn(&h->pdev->dev, "%s FAILED. Aborted command has not completed after %d seconds.\n", | |
2715 | msg, ABORT_COMPLETE_WAIT_SECS); | |
2716 | return FAILED; | |
2717 | } | |
2718 | ||
2719 | ||
edd16368 SC |
2720 | /* |
2721 | * For operations that cannot sleep, a command block is allocated at init, | |
2722 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track | |
2723 | * which ones are free or in use. Lock must be held when calling this. | |
2724 | * cmd_free() is the complement. | |
2725 | */ | |
2726 | static struct CommandList *cmd_alloc(struct ctlr_info *h) | |
2727 | { | |
2728 | struct CommandList *c; | |
2729 | int i; | |
2730 | union u64bit temp64; | |
2731 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
e16a33ad | 2732 | unsigned long flags; |
edd16368 | 2733 | |
e16a33ad | 2734 | spin_lock_irqsave(&h->lock, flags); |
edd16368 SC |
2735 | do { |
2736 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); | |
e16a33ad MG |
2737 | if (i == h->nr_cmds) { |
2738 | spin_unlock_irqrestore(&h->lock, flags); | |
edd16368 | 2739 | return NULL; |
e16a33ad | 2740 | } |
edd16368 SC |
2741 | } while (test_and_set_bit |
2742 | (i & (BITS_PER_LONG - 1), | |
2743 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
e16a33ad MG |
2744 | spin_unlock_irqrestore(&h->lock, flags); |
2745 | ||
edd16368 SC |
2746 | c = h->cmd_pool + i; |
2747 | memset(c, 0, sizeof(*c)); | |
2748 | cmd_dma_handle = h->cmd_pool_dhandle | |
2749 | + i * sizeof(*c); | |
2750 | c->err_info = h->errinfo_pool + i; | |
2751 | memset(c->err_info, 0, sizeof(*c->err_info)); | |
2752 | err_dma_handle = h->errinfo_pool_dhandle | |
2753 | + i * sizeof(*c->err_info); | |
edd16368 SC |
2754 | |
2755 | c->cmdindex = i; | |
2756 | ||
9e0fc764 | 2757 | INIT_LIST_HEAD(&c->list); |
01a02ffc SC |
2758 | c->busaddr = (u32) cmd_dma_handle; |
2759 | temp64.val = (u64) err_dma_handle; | |
edd16368 SC |
2760 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
2761 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
2762 | c->ErrDesc.Len = sizeof(*c->err_info); | |
2763 | ||
2764 | c->h = h; | |
2765 | return c; | |
2766 | } | |
2767 | ||
2768 | /* For operations that can wait for kmalloc to possibly sleep, | |
2769 | * this routine can be called. Lock need not be held to call | |
2770 | * cmd_special_alloc. cmd_special_free() is the complement. | |
2771 | */ | |
2772 | static struct CommandList *cmd_special_alloc(struct ctlr_info *h) | |
2773 | { | |
2774 | struct CommandList *c; | |
2775 | union u64bit temp64; | |
2776 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
2777 | ||
2778 | c = pci_alloc_consistent(h->pdev, sizeof(*c), &cmd_dma_handle); | |
2779 | if (c == NULL) | |
2780 | return NULL; | |
2781 | memset(c, 0, sizeof(*c)); | |
2782 | ||
2783 | c->cmdindex = -1; | |
2784 | ||
2785 | c->err_info = pci_alloc_consistent(h->pdev, sizeof(*c->err_info), | |
2786 | &err_dma_handle); | |
2787 | ||
2788 | if (c->err_info == NULL) { | |
2789 | pci_free_consistent(h->pdev, | |
2790 | sizeof(*c), c, cmd_dma_handle); | |
2791 | return NULL; | |
2792 | } | |
2793 | memset(c->err_info, 0, sizeof(*c->err_info)); | |
2794 | ||
9e0fc764 | 2795 | INIT_LIST_HEAD(&c->list); |
01a02ffc SC |
2796 | c->busaddr = (u32) cmd_dma_handle; |
2797 | temp64.val = (u64) err_dma_handle; | |
edd16368 SC |
2798 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
2799 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
2800 | c->ErrDesc.Len = sizeof(*c->err_info); | |
2801 | ||
2802 | c->h = h; | |
2803 | return c; | |
2804 | } | |
2805 | ||
2806 | static void cmd_free(struct ctlr_info *h, struct CommandList *c) | |
2807 | { | |
2808 | int i; | |
e16a33ad | 2809 | unsigned long flags; |
edd16368 SC |
2810 | |
2811 | i = c - h->cmd_pool; | |
e16a33ad | 2812 | spin_lock_irqsave(&h->lock, flags); |
edd16368 SC |
2813 | clear_bit(i & (BITS_PER_LONG - 1), |
2814 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
e16a33ad | 2815 | spin_unlock_irqrestore(&h->lock, flags); |
edd16368 SC |
2816 | } |
2817 | ||
2818 | static void cmd_special_free(struct ctlr_info *h, struct CommandList *c) | |
2819 | { | |
2820 | union u64bit temp64; | |
2821 | ||
2822 | temp64.val32.lower = c->ErrDesc.Addr.lower; | |
2823 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
2824 | pci_free_consistent(h->pdev, sizeof(*c->err_info), | |
2825 | c->err_info, (dma_addr_t) temp64.val); | |
2826 | pci_free_consistent(h->pdev, sizeof(*c), | |
d896f3f3 | 2827 | c, (dma_addr_t) (c->busaddr & DIRECT_LOOKUP_MASK)); |
edd16368 SC |
2828 | } |
2829 | ||
2830 | #ifdef CONFIG_COMPAT | |
2831 | ||
edd16368 SC |
2832 | static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, void *arg) |
2833 | { | |
2834 | IOCTL32_Command_struct __user *arg32 = | |
2835 | (IOCTL32_Command_struct __user *) arg; | |
2836 | IOCTL_Command_struct arg64; | |
2837 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
2838 | int err; | |
2839 | u32 cp; | |
2840 | ||
938abd84 | 2841 | memset(&arg64, 0, sizeof(arg64)); |
edd16368 SC |
2842 | err = 0; |
2843 | err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
2844 | sizeof(arg64.LUN_info)); | |
2845 | err |= copy_from_user(&arg64.Request, &arg32->Request, | |
2846 | sizeof(arg64.Request)); | |
2847 | err |= copy_from_user(&arg64.error_info, &arg32->error_info, | |
2848 | sizeof(arg64.error_info)); | |
2849 | err |= get_user(arg64.buf_size, &arg32->buf_size); | |
2850 | err |= get_user(cp, &arg32->buf); | |
2851 | arg64.buf = compat_ptr(cp); | |
2852 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
2853 | ||
2854 | if (err) | |
2855 | return -EFAULT; | |
2856 | ||
e39eeaed | 2857 | err = hpsa_ioctl(dev, CCISS_PASSTHRU, (void *)p); |
edd16368 SC |
2858 | if (err) |
2859 | return err; | |
2860 | err |= copy_in_user(&arg32->error_info, &p->error_info, | |
2861 | sizeof(arg32->error_info)); | |
2862 | if (err) | |
2863 | return -EFAULT; | |
2864 | return err; | |
2865 | } | |
2866 | ||
2867 | static int hpsa_ioctl32_big_passthru(struct scsi_device *dev, | |
2868 | int cmd, void *arg) | |
2869 | { | |
2870 | BIG_IOCTL32_Command_struct __user *arg32 = | |
2871 | (BIG_IOCTL32_Command_struct __user *) arg; | |
2872 | BIG_IOCTL_Command_struct arg64; | |
2873 | BIG_IOCTL_Command_struct __user *p = | |
2874 | compat_alloc_user_space(sizeof(arg64)); | |
2875 | int err; | |
2876 | u32 cp; | |
2877 | ||
938abd84 | 2878 | memset(&arg64, 0, sizeof(arg64)); |
edd16368 SC |
2879 | err = 0; |
2880 | err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
2881 | sizeof(arg64.LUN_info)); | |
2882 | err |= copy_from_user(&arg64.Request, &arg32->Request, | |
2883 | sizeof(arg64.Request)); | |
2884 | err |= copy_from_user(&arg64.error_info, &arg32->error_info, | |
2885 | sizeof(arg64.error_info)); | |
2886 | err |= get_user(arg64.buf_size, &arg32->buf_size); | |
2887 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
2888 | err |= get_user(cp, &arg32->buf); | |
2889 | arg64.buf = compat_ptr(cp); | |
2890 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
2891 | ||
2892 | if (err) | |
2893 | return -EFAULT; | |
2894 | ||
e39eeaed | 2895 | err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, (void *)p); |
edd16368 SC |
2896 | if (err) |
2897 | return err; | |
2898 | err |= copy_in_user(&arg32->error_info, &p->error_info, | |
2899 | sizeof(arg32->error_info)); | |
2900 | if (err) | |
2901 | return -EFAULT; | |
2902 | return err; | |
2903 | } | |
71fe75a7 SC |
2904 | |
2905 | static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg) | |
2906 | { | |
2907 | switch (cmd) { | |
2908 | case CCISS_GETPCIINFO: | |
2909 | case CCISS_GETINTINFO: | |
2910 | case CCISS_SETINTINFO: | |
2911 | case CCISS_GETNODENAME: | |
2912 | case CCISS_SETNODENAME: | |
2913 | case CCISS_GETHEARTBEAT: | |
2914 | case CCISS_GETBUSTYPES: | |
2915 | case CCISS_GETFIRMVER: | |
2916 | case CCISS_GETDRIVVER: | |
2917 | case CCISS_REVALIDVOLS: | |
2918 | case CCISS_DEREGDISK: | |
2919 | case CCISS_REGNEWDISK: | |
2920 | case CCISS_REGNEWD: | |
2921 | case CCISS_RESCANDISK: | |
2922 | case CCISS_GETLUNINFO: | |
2923 | return hpsa_ioctl(dev, cmd, arg); | |
2924 | ||
2925 | case CCISS_PASSTHRU32: | |
2926 | return hpsa_ioctl32_passthru(dev, cmd, arg); | |
2927 | case CCISS_BIG_PASSTHRU32: | |
2928 | return hpsa_ioctl32_big_passthru(dev, cmd, arg); | |
2929 | ||
2930 | default: | |
2931 | return -ENOIOCTLCMD; | |
2932 | } | |
2933 | } | |
edd16368 SC |
2934 | #endif |
2935 | ||
2936 | static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp) | |
2937 | { | |
2938 | struct hpsa_pci_info pciinfo; | |
2939 | ||
2940 | if (!argp) | |
2941 | return -EINVAL; | |
2942 | pciinfo.domain = pci_domain_nr(h->pdev->bus); | |
2943 | pciinfo.bus = h->pdev->bus->number; | |
2944 | pciinfo.dev_fn = h->pdev->devfn; | |
2945 | pciinfo.board_id = h->board_id; | |
2946 | if (copy_to_user(argp, &pciinfo, sizeof(pciinfo))) | |
2947 | return -EFAULT; | |
2948 | return 0; | |
2949 | } | |
2950 | ||
2951 | static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp) | |
2952 | { | |
2953 | DriverVer_type DriverVer; | |
2954 | unsigned char vmaj, vmin, vsubmin; | |
2955 | int rc; | |
2956 | ||
2957 | rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu", | |
2958 | &vmaj, &vmin, &vsubmin); | |
2959 | if (rc != 3) { | |
2960 | dev_info(&h->pdev->dev, "driver version string '%s' " | |
2961 | "unrecognized.", HPSA_DRIVER_VERSION); | |
2962 | vmaj = 0; | |
2963 | vmin = 0; | |
2964 | vsubmin = 0; | |
2965 | } | |
2966 | DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin; | |
2967 | if (!argp) | |
2968 | return -EINVAL; | |
2969 | if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type))) | |
2970 | return -EFAULT; | |
2971 | return 0; | |
2972 | } | |
2973 | ||
2974 | static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp) | |
2975 | { | |
2976 | IOCTL_Command_struct iocommand; | |
2977 | struct CommandList *c; | |
2978 | char *buff = NULL; | |
2979 | union u64bit temp64; | |
c1f63c8f | 2980 | int rc = 0; |
edd16368 SC |
2981 | |
2982 | if (!argp) | |
2983 | return -EINVAL; | |
2984 | if (!capable(CAP_SYS_RAWIO)) | |
2985 | return -EPERM; | |
2986 | if (copy_from_user(&iocommand, argp, sizeof(iocommand))) | |
2987 | return -EFAULT; | |
2988 | if ((iocommand.buf_size < 1) && | |
2989 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
2990 | return -EINVAL; | |
2991 | } | |
2992 | if (iocommand.buf_size > 0) { | |
2993 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
2994 | if (buff == NULL) | |
2995 | return -EFAULT; | |
b03a7771 SC |
2996 | if (iocommand.Request.Type.Direction == XFER_WRITE) { |
2997 | /* Copy the data into the buffer we created */ | |
2998 | if (copy_from_user(buff, iocommand.buf, | |
2999 | iocommand.buf_size)) { | |
c1f63c8f SC |
3000 | rc = -EFAULT; |
3001 | goto out_kfree; | |
b03a7771 SC |
3002 | } |
3003 | } else { | |
3004 | memset(buff, 0, iocommand.buf_size); | |
edd16368 | 3005 | } |
b03a7771 | 3006 | } |
edd16368 SC |
3007 | c = cmd_special_alloc(h); |
3008 | if (c == NULL) { | |
c1f63c8f SC |
3009 | rc = -ENOMEM; |
3010 | goto out_kfree; | |
edd16368 SC |
3011 | } |
3012 | /* Fill in the command type */ | |
3013 | c->cmd_type = CMD_IOCTL_PEND; | |
3014 | /* Fill in Command Header */ | |
3015 | c->Header.ReplyQueue = 0; /* unused in simple mode */ | |
3016 | if (iocommand.buf_size > 0) { /* buffer to fill */ | |
3017 | c->Header.SGList = 1; | |
3018 | c->Header.SGTotal = 1; | |
3019 | } else { /* no buffers to fill */ | |
3020 | c->Header.SGList = 0; | |
3021 | c->Header.SGTotal = 0; | |
3022 | } | |
3023 | memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN)); | |
3024 | /* use the kernel address the cmd block for tag */ | |
3025 | c->Header.Tag.lower = c->busaddr; | |
3026 | ||
3027 | /* Fill in Request block */ | |
3028 | memcpy(&c->Request, &iocommand.Request, | |
3029 | sizeof(c->Request)); | |
3030 | ||
3031 | /* Fill in the scatter gather information */ | |
3032 | if (iocommand.buf_size > 0) { | |
3033 | temp64.val = pci_map_single(h->pdev, buff, | |
3034 | iocommand.buf_size, PCI_DMA_BIDIRECTIONAL); | |
bcc48ffa SC |
3035 | if (dma_mapping_error(&h->pdev->dev, temp64.val)) { |
3036 | c->SG[0].Addr.lower = 0; | |
3037 | c->SG[0].Addr.upper = 0; | |
3038 | c->SG[0].Len = 0; | |
3039 | rc = -ENOMEM; | |
3040 | goto out; | |
3041 | } | |
edd16368 SC |
3042 | c->SG[0].Addr.lower = temp64.val32.lower; |
3043 | c->SG[0].Addr.upper = temp64.val32.upper; | |
3044 | c->SG[0].Len = iocommand.buf_size; | |
e1d9cbfa | 3045 | c->SG[0].Ext = HPSA_SG_LAST; /* we are not chaining*/ |
edd16368 | 3046 | } |
a0c12413 | 3047 | hpsa_scsi_do_simple_cmd_core_if_no_lockup(h, c); |
c2dd32e0 SC |
3048 | if (iocommand.buf_size > 0) |
3049 | hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL); | |
edd16368 SC |
3050 | check_ioctl_unit_attention(h, c); |
3051 | ||
3052 | /* Copy the error information out */ | |
3053 | memcpy(&iocommand.error_info, c->err_info, | |
3054 | sizeof(iocommand.error_info)); | |
3055 | if (copy_to_user(argp, &iocommand, sizeof(iocommand))) { | |
c1f63c8f SC |
3056 | rc = -EFAULT; |
3057 | goto out; | |
edd16368 | 3058 | } |
b03a7771 SC |
3059 | if (iocommand.Request.Type.Direction == XFER_READ && |
3060 | iocommand.buf_size > 0) { | |
edd16368 SC |
3061 | /* Copy the data out of the buffer we created */ |
3062 | if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) { | |
c1f63c8f SC |
3063 | rc = -EFAULT; |
3064 | goto out; | |
edd16368 SC |
3065 | } |
3066 | } | |
c1f63c8f | 3067 | out: |
edd16368 | 3068 | cmd_special_free(h, c); |
c1f63c8f SC |
3069 | out_kfree: |
3070 | kfree(buff); | |
3071 | return rc; | |
edd16368 SC |
3072 | } |
3073 | ||
3074 | static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp) | |
3075 | { | |
3076 | BIG_IOCTL_Command_struct *ioc; | |
3077 | struct CommandList *c; | |
3078 | unsigned char **buff = NULL; | |
3079 | int *buff_size = NULL; | |
3080 | union u64bit temp64; | |
3081 | BYTE sg_used = 0; | |
3082 | int status = 0; | |
3083 | int i; | |
01a02ffc SC |
3084 | u32 left; |
3085 | u32 sz; | |
edd16368 SC |
3086 | BYTE __user *data_ptr; |
3087 | ||
3088 | if (!argp) | |
3089 | return -EINVAL; | |
3090 | if (!capable(CAP_SYS_RAWIO)) | |
3091 | return -EPERM; | |
3092 | ioc = (BIG_IOCTL_Command_struct *) | |
3093 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
3094 | if (!ioc) { | |
3095 | status = -ENOMEM; | |
3096 | goto cleanup1; | |
3097 | } | |
3098 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
3099 | status = -EFAULT; | |
3100 | goto cleanup1; | |
3101 | } | |
3102 | if ((ioc->buf_size < 1) && | |
3103 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
3104 | status = -EINVAL; | |
3105 | goto cleanup1; | |
3106 | } | |
3107 | /* Check kmalloc limits using all SGs */ | |
3108 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
3109 | status = -EINVAL; | |
3110 | goto cleanup1; | |
3111 | } | |
d66ae08b | 3112 | if (ioc->buf_size > ioc->malloc_size * SG_ENTRIES_IN_CMD) { |
edd16368 SC |
3113 | status = -EINVAL; |
3114 | goto cleanup1; | |
3115 | } | |
d66ae08b | 3116 | buff = kzalloc(SG_ENTRIES_IN_CMD * sizeof(char *), GFP_KERNEL); |
edd16368 SC |
3117 | if (!buff) { |
3118 | status = -ENOMEM; | |
3119 | goto cleanup1; | |
3120 | } | |
d66ae08b | 3121 | buff_size = kmalloc(SG_ENTRIES_IN_CMD * sizeof(int), GFP_KERNEL); |
edd16368 SC |
3122 | if (!buff_size) { |
3123 | status = -ENOMEM; | |
3124 | goto cleanup1; | |
3125 | } | |
3126 | left = ioc->buf_size; | |
3127 | data_ptr = ioc->buf; | |
3128 | while (left) { | |
3129 | sz = (left > ioc->malloc_size) ? ioc->malloc_size : left; | |
3130 | buff_size[sg_used] = sz; | |
3131 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
3132 | if (buff[sg_used] == NULL) { | |
3133 | status = -ENOMEM; | |
3134 | goto cleanup1; | |
3135 | } | |
3136 | if (ioc->Request.Type.Direction == XFER_WRITE) { | |
3137 | if (copy_from_user(buff[sg_used], data_ptr, sz)) { | |
3138 | status = -ENOMEM; | |
3139 | goto cleanup1; | |
3140 | } | |
3141 | } else | |
3142 | memset(buff[sg_used], 0, sz); | |
3143 | left -= sz; | |
3144 | data_ptr += sz; | |
3145 | sg_used++; | |
3146 | } | |
3147 | c = cmd_special_alloc(h); | |
3148 | if (c == NULL) { | |
3149 | status = -ENOMEM; | |
3150 | goto cleanup1; | |
3151 | } | |
3152 | c->cmd_type = CMD_IOCTL_PEND; | |
3153 | c->Header.ReplyQueue = 0; | |
b03a7771 | 3154 | c->Header.SGList = c->Header.SGTotal = sg_used; |
edd16368 SC |
3155 | memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN)); |
3156 | c->Header.Tag.lower = c->busaddr; | |
3157 | memcpy(&c->Request, &ioc->Request, sizeof(c->Request)); | |
3158 | if (ioc->buf_size > 0) { | |
3159 | int i; | |
3160 | for (i = 0; i < sg_used; i++) { | |
3161 | temp64.val = pci_map_single(h->pdev, buff[i], | |
3162 | buff_size[i], PCI_DMA_BIDIRECTIONAL); | |
bcc48ffa SC |
3163 | if (dma_mapping_error(&h->pdev->dev, temp64.val)) { |
3164 | c->SG[i].Addr.lower = 0; | |
3165 | c->SG[i].Addr.upper = 0; | |
3166 | c->SG[i].Len = 0; | |
3167 | hpsa_pci_unmap(h->pdev, c, i, | |
3168 | PCI_DMA_BIDIRECTIONAL); | |
3169 | status = -ENOMEM; | |
e2d4a1f6 | 3170 | goto cleanup0; |
bcc48ffa | 3171 | } |
edd16368 SC |
3172 | c->SG[i].Addr.lower = temp64.val32.lower; |
3173 | c->SG[i].Addr.upper = temp64.val32.upper; | |
3174 | c->SG[i].Len = buff_size[i]; | |
e1d9cbfa | 3175 | c->SG[i].Ext = i < sg_used - 1 ? 0 : HPSA_SG_LAST; |
edd16368 SC |
3176 | } |
3177 | } | |
a0c12413 | 3178 | hpsa_scsi_do_simple_cmd_core_if_no_lockup(h, c); |
b03a7771 SC |
3179 | if (sg_used) |
3180 | hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL); | |
edd16368 SC |
3181 | check_ioctl_unit_attention(h, c); |
3182 | /* Copy the error information out */ | |
3183 | memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info)); | |
3184 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
edd16368 | 3185 | status = -EFAULT; |
e2d4a1f6 | 3186 | goto cleanup0; |
edd16368 | 3187 | } |
b03a7771 | 3188 | if (ioc->Request.Type.Direction == XFER_READ && ioc->buf_size > 0) { |
edd16368 SC |
3189 | /* Copy the data out of the buffer we created */ |
3190 | BYTE __user *ptr = ioc->buf; | |
3191 | for (i = 0; i < sg_used; i++) { | |
3192 | if (copy_to_user(ptr, buff[i], buff_size[i])) { | |
edd16368 | 3193 | status = -EFAULT; |
e2d4a1f6 | 3194 | goto cleanup0; |
edd16368 SC |
3195 | } |
3196 | ptr += buff_size[i]; | |
3197 | } | |
3198 | } | |
edd16368 | 3199 | status = 0; |
e2d4a1f6 SC |
3200 | cleanup0: |
3201 | cmd_special_free(h, c); | |
edd16368 SC |
3202 | cleanup1: |
3203 | if (buff) { | |
3204 | for (i = 0; i < sg_used; i++) | |
3205 | kfree(buff[i]); | |
3206 | kfree(buff); | |
3207 | } | |
3208 | kfree(buff_size); | |
3209 | kfree(ioc); | |
3210 | return status; | |
3211 | } | |
3212 | ||
3213 | static void check_ioctl_unit_attention(struct ctlr_info *h, | |
3214 | struct CommandList *c) | |
3215 | { | |
3216 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && | |
3217 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) | |
3218 | (void) check_for_unit_attention(h, c); | |
3219 | } | |
0390f0c0 SC |
3220 | |
3221 | static int increment_passthru_count(struct ctlr_info *h) | |
3222 | { | |
3223 | unsigned long flags; | |
3224 | ||
3225 | spin_lock_irqsave(&h->passthru_count_lock, flags); | |
3226 | if (h->passthru_count >= HPSA_MAX_CONCURRENT_PASSTHRUS) { | |
3227 | spin_unlock_irqrestore(&h->passthru_count_lock, flags); | |
3228 | return -1; | |
3229 | } | |
3230 | h->passthru_count++; | |
3231 | spin_unlock_irqrestore(&h->passthru_count_lock, flags); | |
3232 | return 0; | |
3233 | } | |
3234 | ||
3235 | static void decrement_passthru_count(struct ctlr_info *h) | |
3236 | { | |
3237 | unsigned long flags; | |
3238 | ||
3239 | spin_lock_irqsave(&h->passthru_count_lock, flags); | |
3240 | if (h->passthru_count <= 0) { | |
3241 | spin_unlock_irqrestore(&h->passthru_count_lock, flags); | |
3242 | /* not expecting to get here. */ | |
3243 | dev_warn(&h->pdev->dev, "Bug detected, passthru_count seems to be incorrect.\n"); | |
3244 | return; | |
3245 | } | |
3246 | h->passthru_count--; | |
3247 | spin_unlock_irqrestore(&h->passthru_count_lock, flags); | |
3248 | } | |
3249 | ||
edd16368 SC |
3250 | /* |
3251 | * ioctl | |
3252 | */ | |
3253 | static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg) | |
3254 | { | |
3255 | struct ctlr_info *h; | |
3256 | void __user *argp = (void __user *)arg; | |
0390f0c0 | 3257 | int rc; |
edd16368 SC |
3258 | |
3259 | h = sdev_to_hba(dev); | |
3260 | ||
3261 | switch (cmd) { | |
3262 | case CCISS_DEREGDISK: | |
3263 | case CCISS_REGNEWDISK: | |
3264 | case CCISS_REGNEWD: | |
a08a8471 | 3265 | hpsa_scan_start(h->scsi_host); |
edd16368 SC |
3266 | return 0; |
3267 | case CCISS_GETPCIINFO: | |
3268 | return hpsa_getpciinfo_ioctl(h, argp); | |
3269 | case CCISS_GETDRIVVER: | |
3270 | return hpsa_getdrivver_ioctl(h, argp); | |
3271 | case CCISS_PASSTHRU: | |
0390f0c0 SC |
3272 | if (increment_passthru_count(h)) |
3273 | return -EAGAIN; | |
3274 | rc = hpsa_passthru_ioctl(h, argp); | |
3275 | decrement_passthru_count(h); | |
3276 | return rc; | |
edd16368 | 3277 | case CCISS_BIG_PASSTHRU: |
0390f0c0 SC |
3278 | if (increment_passthru_count(h)) |
3279 | return -EAGAIN; | |
3280 | rc = hpsa_big_passthru_ioctl(h, argp); | |
3281 | decrement_passthru_count(h); | |
3282 | return rc; | |
edd16368 SC |
3283 | default: |
3284 | return -ENOTTY; | |
3285 | } | |
3286 | } | |
3287 | ||
6f039790 GKH |
3288 | static int hpsa_send_host_reset(struct ctlr_info *h, unsigned char *scsi3addr, |
3289 | u8 reset_type) | |
64670ac8 SC |
3290 | { |
3291 | struct CommandList *c; | |
3292 | ||
3293 | c = cmd_alloc(h); | |
3294 | if (!c) | |
3295 | return -ENOMEM; | |
a2dac136 SC |
3296 | /* fill_cmd can't fail here, no data buffer to map */ |
3297 | (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, | |
64670ac8 SC |
3298 | RAID_CTLR_LUNID, TYPE_MSG); |
3299 | c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */ | |
3300 | c->waiting = NULL; | |
3301 | enqueue_cmd_and_start_io(h, c); | |
3302 | /* Don't wait for completion, the reset won't complete. Don't free | |
3303 | * the command either. This is the last command we will send before | |
3304 | * re-initializing everything, so it doesn't matter and won't leak. | |
3305 | */ | |
3306 | return 0; | |
3307 | } | |
3308 | ||
a2dac136 | 3309 | static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, |
01a02ffc | 3310 | void *buff, size_t size, u8 page_code, unsigned char *scsi3addr, |
edd16368 SC |
3311 | int cmd_type) |
3312 | { | |
3313 | int pci_dir = XFER_NONE; | |
75167d2c | 3314 | struct CommandList *a; /* for commands to be aborted */ |
edd16368 SC |
3315 | |
3316 | c->cmd_type = CMD_IOCTL_PEND; | |
3317 | c->Header.ReplyQueue = 0; | |
3318 | if (buff != NULL && size > 0) { | |
3319 | c->Header.SGList = 1; | |
3320 | c->Header.SGTotal = 1; | |
3321 | } else { | |
3322 | c->Header.SGList = 0; | |
3323 | c->Header.SGTotal = 0; | |
3324 | } | |
3325 | c->Header.Tag.lower = c->busaddr; | |
3326 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); | |
3327 | ||
3328 | c->Request.Type.Type = cmd_type; | |
3329 | if (cmd_type == TYPE_CMD) { | |
3330 | switch (cmd) { | |
3331 | case HPSA_INQUIRY: | |
3332 | /* are we trying to read a vital product page */ | |
3333 | if (page_code != 0) { | |
3334 | c->Request.CDB[1] = 0x01; | |
3335 | c->Request.CDB[2] = page_code; | |
3336 | } | |
3337 | c->Request.CDBLen = 6; | |
3338 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
3339 | c->Request.Type.Direction = XFER_READ; | |
3340 | c->Request.Timeout = 0; | |
3341 | c->Request.CDB[0] = HPSA_INQUIRY; | |
3342 | c->Request.CDB[4] = size & 0xFF; | |
3343 | break; | |
3344 | case HPSA_REPORT_LOG: | |
3345 | case HPSA_REPORT_PHYS: | |
3346 | /* Talking to controller so It's a physical command | |
3347 | mode = 00 target = 0. Nothing to write. | |
3348 | */ | |
3349 | c->Request.CDBLen = 12; | |
3350 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
3351 | c->Request.Type.Direction = XFER_READ; | |
3352 | c->Request.Timeout = 0; | |
3353 | c->Request.CDB[0] = cmd; | |
3354 | c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ | |
3355 | c->Request.CDB[7] = (size >> 16) & 0xFF; | |
3356 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
3357 | c->Request.CDB[9] = size & 0xFF; | |
3358 | break; | |
edd16368 SC |
3359 | case HPSA_CACHE_FLUSH: |
3360 | c->Request.CDBLen = 12; | |
3361 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
3362 | c->Request.Type.Direction = XFER_WRITE; | |
3363 | c->Request.Timeout = 0; | |
3364 | c->Request.CDB[0] = BMIC_WRITE; | |
3365 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
bb158eab SC |
3366 | c->Request.CDB[7] = (size >> 8) & 0xFF; |
3367 | c->Request.CDB[8] = size & 0xFF; | |
edd16368 SC |
3368 | break; |
3369 | case TEST_UNIT_READY: | |
3370 | c->Request.CDBLen = 6; | |
3371 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
3372 | c->Request.Type.Direction = XFER_NONE; | |
3373 | c->Request.Timeout = 0; | |
3374 | break; | |
3375 | default: | |
3376 | dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd); | |
3377 | BUG(); | |
a2dac136 | 3378 | return -1; |
edd16368 SC |
3379 | } |
3380 | } else if (cmd_type == TYPE_MSG) { | |
3381 | switch (cmd) { | |
3382 | ||
3383 | case HPSA_DEVICE_RESET_MSG: | |
3384 | c->Request.CDBLen = 16; | |
3385 | c->Request.Type.Type = 1; /* It is a MSG not a CMD */ | |
3386 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
3387 | c->Request.Type.Direction = XFER_NONE; | |
3388 | c->Request.Timeout = 0; /* Don't time out */ | |
64670ac8 SC |
3389 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); |
3390 | c->Request.CDB[0] = cmd; | |
21e89afd | 3391 | c->Request.CDB[1] = HPSA_RESET_TYPE_LUN; |
edd16368 SC |
3392 | /* If bytes 4-7 are zero, it means reset the */ |
3393 | /* LunID device */ | |
3394 | c->Request.CDB[4] = 0x00; | |
3395 | c->Request.CDB[5] = 0x00; | |
3396 | c->Request.CDB[6] = 0x00; | |
3397 | c->Request.CDB[7] = 0x00; | |
75167d2c SC |
3398 | break; |
3399 | case HPSA_ABORT_MSG: | |
3400 | a = buff; /* point to command to be aborted */ | |
3401 | dev_dbg(&h->pdev->dev, "Abort Tag:0x%08x:%08x using request Tag:0x%08x:%08x\n", | |
3402 | a->Header.Tag.upper, a->Header.Tag.lower, | |
3403 | c->Header.Tag.upper, c->Header.Tag.lower); | |
3404 | c->Request.CDBLen = 16; | |
3405 | c->Request.Type.Type = TYPE_MSG; | |
3406 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
3407 | c->Request.Type.Direction = XFER_WRITE; | |
3408 | c->Request.Timeout = 0; /* Don't time out */ | |
3409 | c->Request.CDB[0] = HPSA_TASK_MANAGEMENT; | |
3410 | c->Request.CDB[1] = HPSA_TMF_ABORT_TASK; | |
3411 | c->Request.CDB[2] = 0x00; /* reserved */ | |
3412 | c->Request.CDB[3] = 0x00; /* reserved */ | |
3413 | /* Tag to abort goes in CDB[4]-CDB[11] */ | |
3414 | c->Request.CDB[4] = a->Header.Tag.lower & 0xFF; | |
3415 | c->Request.CDB[5] = (a->Header.Tag.lower >> 8) & 0xFF; | |
3416 | c->Request.CDB[6] = (a->Header.Tag.lower >> 16) & 0xFF; | |
3417 | c->Request.CDB[7] = (a->Header.Tag.lower >> 24) & 0xFF; | |
3418 | c->Request.CDB[8] = a->Header.Tag.upper & 0xFF; | |
3419 | c->Request.CDB[9] = (a->Header.Tag.upper >> 8) & 0xFF; | |
3420 | c->Request.CDB[10] = (a->Header.Tag.upper >> 16) & 0xFF; | |
3421 | c->Request.CDB[11] = (a->Header.Tag.upper >> 24) & 0xFF; | |
3422 | c->Request.CDB[12] = 0x00; /* reserved */ | |
3423 | c->Request.CDB[13] = 0x00; /* reserved */ | |
3424 | c->Request.CDB[14] = 0x00; /* reserved */ | |
3425 | c->Request.CDB[15] = 0x00; /* reserved */ | |
edd16368 | 3426 | break; |
edd16368 SC |
3427 | default: |
3428 | dev_warn(&h->pdev->dev, "unknown message type %d\n", | |
3429 | cmd); | |
3430 | BUG(); | |
3431 | } | |
3432 | } else { | |
3433 | dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type); | |
3434 | BUG(); | |
3435 | } | |
3436 | ||
3437 | switch (c->Request.Type.Direction) { | |
3438 | case XFER_READ: | |
3439 | pci_dir = PCI_DMA_FROMDEVICE; | |
3440 | break; | |
3441 | case XFER_WRITE: | |
3442 | pci_dir = PCI_DMA_TODEVICE; | |
3443 | break; | |
3444 | case XFER_NONE: | |
3445 | pci_dir = PCI_DMA_NONE; | |
3446 | break; | |
3447 | default: | |
3448 | pci_dir = PCI_DMA_BIDIRECTIONAL; | |
3449 | } | |
a2dac136 SC |
3450 | if (hpsa_map_one(h->pdev, c, buff, size, pci_dir)) |
3451 | return -1; | |
3452 | return 0; | |
edd16368 SC |
3453 | } |
3454 | ||
3455 | /* | |
3456 | * Map (physical) PCI mem into (virtual) kernel space | |
3457 | */ | |
3458 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
3459 | { | |
3460 | ulong page_base = ((ulong) base) & PAGE_MASK; | |
3461 | ulong page_offs = ((ulong) base) - page_base; | |
088ba34c SC |
3462 | void __iomem *page_remapped = ioremap_nocache(page_base, |
3463 | page_offs + size); | |
edd16368 SC |
3464 | |
3465 | return page_remapped ? (page_remapped + page_offs) : NULL; | |
3466 | } | |
3467 | ||
3468 | /* Takes cmds off the submission queue and sends them to the hardware, | |
3469 | * then puts them on the queue of cmds waiting for completion. | |
3470 | */ | |
3471 | static void start_io(struct ctlr_info *h) | |
3472 | { | |
3473 | struct CommandList *c; | |
e16a33ad | 3474 | unsigned long flags; |
edd16368 | 3475 | |
e16a33ad | 3476 | spin_lock_irqsave(&h->lock, flags); |
9e0fc764 SC |
3477 | while (!list_empty(&h->reqQ)) { |
3478 | c = list_entry(h->reqQ.next, struct CommandList, list); | |
edd16368 SC |
3479 | /* can't do anything if fifo is full */ |
3480 | if ((h->access.fifo_full(h))) { | |
396883e2 | 3481 | h->fifo_recently_full = 1; |
edd16368 SC |
3482 | dev_warn(&h->pdev->dev, "fifo full\n"); |
3483 | break; | |
3484 | } | |
396883e2 | 3485 | h->fifo_recently_full = 0; |
edd16368 SC |
3486 | |
3487 | /* Get the first entry from the Request Q */ | |
3488 | removeQ(c); | |
3489 | h->Qdepth--; | |
3490 | ||
edd16368 SC |
3491 | /* Put job onto the completed Q */ |
3492 | addQ(&h->cmpQ, c); | |
e16a33ad MG |
3493 | |
3494 | /* Must increment commands_outstanding before unlocking | |
3495 | * and submitting to avoid race checking for fifo full | |
3496 | * condition. | |
3497 | */ | |
3498 | h->commands_outstanding++; | |
3499 | if (h->commands_outstanding > h->max_outstanding) | |
3500 | h->max_outstanding = h->commands_outstanding; | |
3501 | ||
3502 | /* Tell the controller execute command */ | |
3503 | spin_unlock_irqrestore(&h->lock, flags); | |
3504 | h->access.submit_command(h, c); | |
3505 | spin_lock_irqsave(&h->lock, flags); | |
edd16368 | 3506 | } |
e16a33ad | 3507 | spin_unlock_irqrestore(&h->lock, flags); |
edd16368 SC |
3508 | } |
3509 | ||
254f796b | 3510 | static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q) |
edd16368 | 3511 | { |
254f796b | 3512 | return h->access.command_completed(h, q); |
edd16368 SC |
3513 | } |
3514 | ||
900c5440 | 3515 | static inline bool interrupt_pending(struct ctlr_info *h) |
edd16368 SC |
3516 | { |
3517 | return h->access.intr_pending(h); | |
3518 | } | |
3519 | ||
3520 | static inline long interrupt_not_for_us(struct ctlr_info *h) | |
3521 | { | |
10f66018 SC |
3522 | return (h->access.intr_pending(h) == 0) || |
3523 | (h->interrupts_enabled == 0); | |
edd16368 SC |
3524 | } |
3525 | ||
01a02ffc SC |
3526 | static inline int bad_tag(struct ctlr_info *h, u32 tag_index, |
3527 | u32 raw_tag) | |
edd16368 SC |
3528 | { |
3529 | if (unlikely(tag_index >= h->nr_cmds)) { | |
3530 | dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); | |
3531 | return 1; | |
3532 | } | |
3533 | return 0; | |
3534 | } | |
3535 | ||
5a3d16f5 | 3536 | static inline void finish_cmd(struct CommandList *c) |
edd16368 | 3537 | { |
e16a33ad | 3538 | unsigned long flags; |
396883e2 SC |
3539 | int io_may_be_stalled = 0; |
3540 | struct ctlr_info *h = c->h; | |
e16a33ad | 3541 | |
396883e2 | 3542 | spin_lock_irqsave(&h->lock, flags); |
edd16368 | 3543 | removeQ(c); |
396883e2 SC |
3544 | |
3545 | /* | |
3546 | * Check for possibly stalled i/o. | |
3547 | * | |
3548 | * If a fifo_full condition is encountered, requests will back up | |
3549 | * in h->reqQ. This queue is only emptied out by start_io which is | |
3550 | * only called when a new i/o request comes in. If no i/o's are | |
3551 | * forthcoming, the i/o's in h->reqQ can get stuck. So we call | |
3552 | * start_io from here if we detect such a danger. | |
3553 | * | |
3554 | * Normally, we shouldn't hit this case, but pounding on the | |
3555 | * CCISS_PASSTHRU ioctl can provoke it. Only call start_io if | |
3556 | * commands_outstanding is low. We want to avoid calling | |
3557 | * start_io from in here as much as possible, and esp. don't | |
3558 | * want to get in a cycle where we call start_io every time | |
3559 | * through here. | |
3560 | */ | |
3561 | if (unlikely(h->fifo_recently_full) && | |
3562 | h->commands_outstanding < 5) | |
3563 | io_may_be_stalled = 1; | |
3564 | ||
3565 | spin_unlock_irqrestore(&h->lock, flags); | |
3566 | ||
e85c5974 | 3567 | dial_up_lockup_detection_on_fw_flash_complete(c->h, c); |
edd16368 | 3568 | if (likely(c->cmd_type == CMD_SCSI)) |
1fb011fb | 3569 | complete_scsi_command(c); |
edd16368 SC |
3570 | else if (c->cmd_type == CMD_IOCTL_PEND) |
3571 | complete(c->waiting); | |
396883e2 SC |
3572 | if (unlikely(io_may_be_stalled)) |
3573 | start_io(h); | |
edd16368 SC |
3574 | } |
3575 | ||
a104c99f SC |
3576 | static inline u32 hpsa_tag_contains_index(u32 tag) |
3577 | { | |
a104c99f SC |
3578 | return tag & DIRECT_LOOKUP_BIT; |
3579 | } | |
3580 | ||
3581 | static inline u32 hpsa_tag_to_index(u32 tag) | |
3582 | { | |
a104c99f SC |
3583 | return tag >> DIRECT_LOOKUP_SHIFT; |
3584 | } | |
3585 | ||
a9a3a273 SC |
3586 | |
3587 | static inline u32 hpsa_tag_discard_error_bits(struct ctlr_info *h, u32 tag) | |
a104c99f | 3588 | { |
a9a3a273 SC |
3589 | #define HPSA_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1) |
3590 | #define HPSA_SIMPLE_ERROR_BITS 0x03 | |
960a30e7 | 3591 | if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant))) |
a9a3a273 SC |
3592 | return tag & ~HPSA_SIMPLE_ERROR_BITS; |
3593 | return tag & ~HPSA_PERF_ERROR_BITS; | |
a104c99f SC |
3594 | } |
3595 | ||
303932fd | 3596 | /* process completion of an indexed ("direct lookup") command */ |
1d94f94d | 3597 | static inline void process_indexed_cmd(struct ctlr_info *h, |
303932fd DB |
3598 | u32 raw_tag) |
3599 | { | |
3600 | u32 tag_index; | |
3601 | struct CommandList *c; | |
3602 | ||
3603 | tag_index = hpsa_tag_to_index(raw_tag); | |
1d94f94d SC |
3604 | if (!bad_tag(h, tag_index, raw_tag)) { |
3605 | c = h->cmd_pool + tag_index; | |
3606 | finish_cmd(c); | |
3607 | } | |
303932fd DB |
3608 | } |
3609 | ||
3610 | /* process completion of a non-indexed command */ | |
1d94f94d | 3611 | static inline void process_nonindexed_cmd(struct ctlr_info *h, |
303932fd DB |
3612 | u32 raw_tag) |
3613 | { | |
3614 | u32 tag; | |
3615 | struct CommandList *c = NULL; | |
e16a33ad | 3616 | unsigned long flags; |
303932fd | 3617 | |
a9a3a273 | 3618 | tag = hpsa_tag_discard_error_bits(h, raw_tag); |
e16a33ad | 3619 | spin_lock_irqsave(&h->lock, flags); |
9e0fc764 | 3620 | list_for_each_entry(c, &h->cmpQ, list) { |
303932fd | 3621 | if ((c->busaddr & 0xFFFFFFE0) == (tag & 0xFFFFFFE0)) { |
e16a33ad | 3622 | spin_unlock_irqrestore(&h->lock, flags); |
5a3d16f5 | 3623 | finish_cmd(c); |
1d94f94d | 3624 | return; |
303932fd DB |
3625 | } |
3626 | } | |
e16a33ad | 3627 | spin_unlock_irqrestore(&h->lock, flags); |
303932fd | 3628 | bad_tag(h, h->nr_cmds + 1, raw_tag); |
303932fd DB |
3629 | } |
3630 | ||
64670ac8 SC |
3631 | /* Some controllers, like p400, will give us one interrupt |
3632 | * after a soft reset, even if we turned interrupts off. | |
3633 | * Only need to check for this in the hpsa_xxx_discard_completions | |
3634 | * functions. | |
3635 | */ | |
3636 | static int ignore_bogus_interrupt(struct ctlr_info *h) | |
3637 | { | |
3638 | if (likely(!reset_devices)) | |
3639 | return 0; | |
3640 | ||
3641 | if (likely(h->interrupts_enabled)) | |
3642 | return 0; | |
3643 | ||
3644 | dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled " | |
3645 | "(known firmware bug.) Ignoring.\n"); | |
3646 | ||
3647 | return 1; | |
3648 | } | |
3649 | ||
254f796b MG |
3650 | /* |
3651 | * Convert &h->q[x] (passed to interrupt handlers) back to h. | |
3652 | * Relies on (h-q[x] == x) being true for x such that | |
3653 | * 0 <= x < MAX_REPLY_QUEUES. | |
3654 | */ | |
3655 | static struct ctlr_info *queue_to_hba(u8 *queue) | |
64670ac8 | 3656 | { |
254f796b MG |
3657 | return container_of((queue - *queue), struct ctlr_info, q[0]); |
3658 | } | |
3659 | ||
3660 | static irqreturn_t hpsa_intx_discard_completions(int irq, void *queue) | |
3661 | { | |
3662 | struct ctlr_info *h = queue_to_hba(queue); | |
3663 | u8 q = *(u8 *) queue; | |
64670ac8 SC |
3664 | u32 raw_tag; |
3665 | ||
3666 | if (ignore_bogus_interrupt(h)) | |
3667 | return IRQ_NONE; | |
3668 | ||
3669 | if (interrupt_not_for_us(h)) | |
3670 | return IRQ_NONE; | |
a0c12413 | 3671 | h->last_intr_timestamp = get_jiffies_64(); |
64670ac8 | 3672 | while (interrupt_pending(h)) { |
254f796b | 3673 | raw_tag = get_next_completion(h, q); |
64670ac8 | 3674 | while (raw_tag != FIFO_EMPTY) |
254f796b | 3675 | raw_tag = next_command(h, q); |
64670ac8 | 3676 | } |
64670ac8 SC |
3677 | return IRQ_HANDLED; |
3678 | } | |
3679 | ||
254f796b | 3680 | static irqreturn_t hpsa_msix_discard_completions(int irq, void *queue) |
64670ac8 | 3681 | { |
254f796b | 3682 | struct ctlr_info *h = queue_to_hba(queue); |
64670ac8 | 3683 | u32 raw_tag; |
254f796b | 3684 | u8 q = *(u8 *) queue; |
64670ac8 SC |
3685 | |
3686 | if (ignore_bogus_interrupt(h)) | |
3687 | return IRQ_NONE; | |
3688 | ||
a0c12413 | 3689 | h->last_intr_timestamp = get_jiffies_64(); |
254f796b | 3690 | raw_tag = get_next_completion(h, q); |
64670ac8 | 3691 | while (raw_tag != FIFO_EMPTY) |
254f796b | 3692 | raw_tag = next_command(h, q); |
64670ac8 SC |
3693 | return IRQ_HANDLED; |
3694 | } | |
3695 | ||
254f796b | 3696 | static irqreturn_t do_hpsa_intr_intx(int irq, void *queue) |
edd16368 | 3697 | { |
254f796b | 3698 | struct ctlr_info *h = queue_to_hba((u8 *) queue); |
303932fd | 3699 | u32 raw_tag; |
254f796b | 3700 | u8 q = *(u8 *) queue; |
edd16368 SC |
3701 | |
3702 | if (interrupt_not_for_us(h)) | |
3703 | return IRQ_NONE; | |
a0c12413 | 3704 | h->last_intr_timestamp = get_jiffies_64(); |
10f66018 | 3705 | while (interrupt_pending(h)) { |
254f796b | 3706 | raw_tag = get_next_completion(h, q); |
10f66018 | 3707 | while (raw_tag != FIFO_EMPTY) { |
1d94f94d SC |
3708 | if (likely(hpsa_tag_contains_index(raw_tag))) |
3709 | process_indexed_cmd(h, raw_tag); | |
10f66018 | 3710 | else |
1d94f94d | 3711 | process_nonindexed_cmd(h, raw_tag); |
254f796b | 3712 | raw_tag = next_command(h, q); |
10f66018 SC |
3713 | } |
3714 | } | |
10f66018 SC |
3715 | return IRQ_HANDLED; |
3716 | } | |
3717 | ||
254f796b | 3718 | static irqreturn_t do_hpsa_intr_msi(int irq, void *queue) |
10f66018 | 3719 | { |
254f796b | 3720 | struct ctlr_info *h = queue_to_hba(queue); |
10f66018 | 3721 | u32 raw_tag; |
254f796b | 3722 | u8 q = *(u8 *) queue; |
10f66018 | 3723 | |
a0c12413 | 3724 | h->last_intr_timestamp = get_jiffies_64(); |
254f796b | 3725 | raw_tag = get_next_completion(h, q); |
303932fd | 3726 | while (raw_tag != FIFO_EMPTY) { |
1d94f94d SC |
3727 | if (likely(hpsa_tag_contains_index(raw_tag))) |
3728 | process_indexed_cmd(h, raw_tag); | |
303932fd | 3729 | else |
1d94f94d | 3730 | process_nonindexed_cmd(h, raw_tag); |
254f796b | 3731 | raw_tag = next_command(h, q); |
edd16368 | 3732 | } |
edd16368 SC |
3733 | return IRQ_HANDLED; |
3734 | } | |
3735 | ||
a9a3a273 SC |
3736 | /* Send a message CDB to the firmware. Careful, this only works |
3737 | * in simple mode, not performant mode due to the tag lookup. | |
3738 | * We only ever use this immediately after a controller reset. | |
3739 | */ | |
6f039790 GKH |
3740 | static int hpsa_message(struct pci_dev *pdev, unsigned char opcode, |
3741 | unsigned char type) | |
edd16368 SC |
3742 | { |
3743 | struct Command { | |
3744 | struct CommandListHeader CommandHeader; | |
3745 | struct RequestBlock Request; | |
3746 | struct ErrDescriptor ErrorDescriptor; | |
3747 | }; | |
3748 | struct Command *cmd; | |
3749 | static const size_t cmd_sz = sizeof(*cmd) + | |
3750 | sizeof(cmd->ErrorDescriptor); | |
3751 | dma_addr_t paddr64; | |
3752 | uint32_t paddr32, tag; | |
3753 | void __iomem *vaddr; | |
3754 | int i, err; | |
3755 | ||
3756 | vaddr = pci_ioremap_bar(pdev, 0); | |
3757 | if (vaddr == NULL) | |
3758 | return -ENOMEM; | |
3759 | ||
3760 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the | |
3761 | * CCISS commands, so they must be allocated from the lower 4GiB of | |
3762 | * memory. | |
3763 | */ | |
3764 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); | |
3765 | if (err) { | |
3766 | iounmap(vaddr); | |
3767 | return -ENOMEM; | |
3768 | } | |
3769 | ||
3770 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); | |
3771 | if (cmd == NULL) { | |
3772 | iounmap(vaddr); | |
3773 | return -ENOMEM; | |
3774 | } | |
3775 | ||
3776 | /* This must fit, because of the 32-bit consistent DMA mask. Also, | |
3777 | * although there's no guarantee, we assume that the address is at | |
3778 | * least 4-byte aligned (most likely, it's page-aligned). | |
3779 | */ | |
3780 | paddr32 = paddr64; | |
3781 | ||
3782 | cmd->CommandHeader.ReplyQueue = 0; | |
3783 | cmd->CommandHeader.SGList = 0; | |
3784 | cmd->CommandHeader.SGTotal = 0; | |
3785 | cmd->CommandHeader.Tag.lower = paddr32; | |
3786 | cmd->CommandHeader.Tag.upper = 0; | |
3787 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); | |
3788 | ||
3789 | cmd->Request.CDBLen = 16; | |
3790 | cmd->Request.Type.Type = TYPE_MSG; | |
3791 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; | |
3792 | cmd->Request.Type.Direction = XFER_NONE; | |
3793 | cmd->Request.Timeout = 0; /* Don't time out */ | |
3794 | cmd->Request.CDB[0] = opcode; | |
3795 | cmd->Request.CDB[1] = type; | |
3796 | memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */ | |
3797 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(*cmd); | |
3798 | cmd->ErrorDescriptor.Addr.upper = 0; | |
3799 | cmd->ErrorDescriptor.Len = sizeof(struct ErrorInfo); | |
3800 | ||
3801 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); | |
3802 | ||
3803 | for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) { | |
3804 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); | |
a9a3a273 | 3805 | if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr32) |
edd16368 SC |
3806 | break; |
3807 | msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS); | |
3808 | } | |
3809 | ||
3810 | iounmap(vaddr); | |
3811 | ||
3812 | /* we leak the DMA buffer here ... no choice since the controller could | |
3813 | * still complete the command. | |
3814 | */ | |
3815 | if (i == HPSA_MSG_SEND_RETRY_LIMIT) { | |
3816 | dev_err(&pdev->dev, "controller message %02x:%02x timed out\n", | |
3817 | opcode, type); | |
3818 | return -ETIMEDOUT; | |
3819 | } | |
3820 | ||
3821 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); | |
3822 | ||
3823 | if (tag & HPSA_ERROR_BIT) { | |
3824 | dev_err(&pdev->dev, "controller message %02x:%02x failed\n", | |
3825 | opcode, type); | |
3826 | return -EIO; | |
3827 | } | |
3828 | ||
3829 | dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n", | |
3830 | opcode, type); | |
3831 | return 0; | |
3832 | } | |
3833 | ||
edd16368 SC |
3834 | #define hpsa_noop(p) hpsa_message(p, 3, 0) |
3835 | ||
1df8552a | 3836 | static int hpsa_controller_hard_reset(struct pci_dev *pdev, |
cf0b08d0 | 3837 | void * __iomem vaddr, u32 use_doorbell) |
1df8552a SC |
3838 | { |
3839 | u16 pmcsr; | |
3840 | int pos; | |
3841 | ||
3842 | if (use_doorbell) { | |
3843 | /* For everything after the P600, the PCI power state method | |
3844 | * of resetting the controller doesn't work, so we have this | |
3845 | * other way using the doorbell register. | |
3846 | */ | |
3847 | dev_info(&pdev->dev, "using doorbell to reset controller\n"); | |
cf0b08d0 | 3848 | writel(use_doorbell, vaddr + SA5_DOORBELL); |
85009239 SC |
3849 | |
3850 | /* PMC hardware guys tell us we need a 5 second delay after | |
3851 | * doorbell reset and before any attempt to talk to the board | |
3852 | * at all to ensure that this actually works and doesn't fall | |
3853 | * over in some weird corner cases. | |
3854 | */ | |
3855 | msleep(5000); | |
1df8552a SC |
3856 | } else { /* Try to do it the PCI power state way */ |
3857 | ||
3858 | /* Quoting from the Open CISS Specification: "The Power | |
3859 | * Management Control/Status Register (CSR) controls the power | |
3860 | * state of the device. The normal operating state is D0, | |
3861 | * CSR=00h. The software off state is D3, CSR=03h. To reset | |
3862 | * the controller, place the interface device in D3 then to D0, | |
3863 | * this causes a secondary PCI reset which will reset the | |
3864 | * controller." */ | |
3865 | ||
3866 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); | |
3867 | if (pos == 0) { | |
3868 | dev_err(&pdev->dev, | |
3869 | "hpsa_reset_controller: " | |
3870 | "PCI PM not supported\n"); | |
3871 | return -ENODEV; | |
3872 | } | |
3873 | dev_info(&pdev->dev, "using PCI PM to reset controller\n"); | |
3874 | /* enter the D3hot power management state */ | |
3875 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); | |
3876 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
3877 | pmcsr |= PCI_D3hot; | |
3878 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
3879 | ||
3880 | msleep(500); | |
3881 | ||
3882 | /* enter the D0 power management state */ | |
3883 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
3884 | pmcsr |= PCI_D0; | |
3885 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
c4853efe MM |
3886 | |
3887 | /* | |
3888 | * The P600 requires a small delay when changing states. | |
3889 | * Otherwise we may think the board did not reset and we bail. | |
3890 | * This for kdump only and is particular to the P600. | |
3891 | */ | |
3892 | msleep(500); | |
1df8552a SC |
3893 | } |
3894 | return 0; | |
3895 | } | |
3896 | ||
6f039790 | 3897 | static void init_driver_version(char *driver_version, int len) |
580ada3c SC |
3898 | { |
3899 | memset(driver_version, 0, len); | |
f79cfec6 | 3900 | strncpy(driver_version, HPSA " " HPSA_DRIVER_VERSION, len - 1); |
580ada3c SC |
3901 | } |
3902 | ||
6f039790 | 3903 | static int write_driver_ver_to_cfgtable(struct CfgTable __iomem *cfgtable) |
580ada3c SC |
3904 | { |
3905 | char *driver_version; | |
3906 | int i, size = sizeof(cfgtable->driver_version); | |
3907 | ||
3908 | driver_version = kmalloc(size, GFP_KERNEL); | |
3909 | if (!driver_version) | |
3910 | return -ENOMEM; | |
3911 | ||
3912 | init_driver_version(driver_version, size); | |
3913 | for (i = 0; i < size; i++) | |
3914 | writeb(driver_version[i], &cfgtable->driver_version[i]); | |
3915 | kfree(driver_version); | |
3916 | return 0; | |
3917 | } | |
3918 | ||
6f039790 GKH |
3919 | static void read_driver_ver_from_cfgtable(struct CfgTable __iomem *cfgtable, |
3920 | unsigned char *driver_ver) | |
580ada3c SC |
3921 | { |
3922 | int i; | |
3923 | ||
3924 | for (i = 0; i < sizeof(cfgtable->driver_version); i++) | |
3925 | driver_ver[i] = readb(&cfgtable->driver_version[i]); | |
3926 | } | |
3927 | ||
6f039790 | 3928 | static int controller_reset_failed(struct CfgTable __iomem *cfgtable) |
580ada3c SC |
3929 | { |
3930 | ||
3931 | char *driver_ver, *old_driver_ver; | |
3932 | int rc, size = sizeof(cfgtable->driver_version); | |
3933 | ||
3934 | old_driver_ver = kmalloc(2 * size, GFP_KERNEL); | |
3935 | if (!old_driver_ver) | |
3936 | return -ENOMEM; | |
3937 | driver_ver = old_driver_ver + size; | |
3938 | ||
3939 | /* After a reset, the 32 bytes of "driver version" in the cfgtable | |
3940 | * should have been changed, otherwise we know the reset failed. | |
3941 | */ | |
3942 | init_driver_version(old_driver_ver, size); | |
3943 | read_driver_ver_from_cfgtable(cfgtable, driver_ver); | |
3944 | rc = !memcmp(driver_ver, old_driver_ver, size); | |
3945 | kfree(old_driver_ver); | |
3946 | return rc; | |
3947 | } | |
edd16368 | 3948 | /* This does a hard reset of the controller using PCI power management |
1df8552a | 3949 | * states or the using the doorbell register. |
edd16368 | 3950 | */ |
6f039790 | 3951 | static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev) |
edd16368 | 3952 | { |
1df8552a SC |
3953 | u64 cfg_offset; |
3954 | u32 cfg_base_addr; | |
3955 | u64 cfg_base_addr_index; | |
3956 | void __iomem *vaddr; | |
3957 | unsigned long paddr; | |
580ada3c | 3958 | u32 misc_fw_support; |
270d05de | 3959 | int rc; |
1df8552a | 3960 | struct CfgTable __iomem *cfgtable; |
cf0b08d0 | 3961 | u32 use_doorbell; |
18867659 | 3962 | u32 board_id; |
270d05de | 3963 | u16 command_register; |
edd16368 | 3964 | |
1df8552a SC |
3965 | /* For controllers as old as the P600, this is very nearly |
3966 | * the same thing as | |
edd16368 SC |
3967 | * |
3968 | * pci_save_state(pci_dev); | |
3969 | * pci_set_power_state(pci_dev, PCI_D3hot); | |
3970 | * pci_set_power_state(pci_dev, PCI_D0); | |
3971 | * pci_restore_state(pci_dev); | |
3972 | * | |
1df8552a SC |
3973 | * For controllers newer than the P600, the pci power state |
3974 | * method of resetting doesn't work so we have another way | |
3975 | * using the doorbell register. | |
edd16368 | 3976 | */ |
18867659 | 3977 | |
25c1e56a | 3978 | rc = hpsa_lookup_board_id(pdev, &board_id); |
46380786 | 3979 | if (rc < 0 || !ctlr_is_resettable(board_id)) { |
25c1e56a SC |
3980 | dev_warn(&pdev->dev, "Not resetting device.\n"); |
3981 | return -ENODEV; | |
3982 | } | |
46380786 SC |
3983 | |
3984 | /* if controller is soft- but not hard resettable... */ | |
3985 | if (!ctlr_is_hard_resettable(board_id)) | |
3986 | return -ENOTSUPP; /* try soft reset later. */ | |
18867659 | 3987 | |
270d05de SC |
3988 | /* Save the PCI command register */ |
3989 | pci_read_config_word(pdev, 4, &command_register); | |
3990 | /* Turn the board off. This is so that later pci_restore_state() | |
3991 | * won't turn the board on before the rest of config space is ready. | |
3992 | */ | |
3993 | pci_disable_device(pdev); | |
3994 | pci_save_state(pdev); | |
edd16368 | 3995 | |
1df8552a SC |
3996 | /* find the first memory BAR, so we can find the cfg table */ |
3997 | rc = hpsa_pci_find_memory_BAR(pdev, &paddr); | |
3998 | if (rc) | |
3999 | return rc; | |
4000 | vaddr = remap_pci_mem(paddr, 0x250); | |
4001 | if (!vaddr) | |
4002 | return -ENOMEM; | |
edd16368 | 4003 | |
1df8552a SC |
4004 | /* find cfgtable in order to check if reset via doorbell is supported */ |
4005 | rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr, | |
4006 | &cfg_base_addr_index, &cfg_offset); | |
4007 | if (rc) | |
4008 | goto unmap_vaddr; | |
4009 | cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
4010 | cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable)); | |
4011 | if (!cfgtable) { | |
4012 | rc = -ENOMEM; | |
4013 | goto unmap_vaddr; | |
4014 | } | |
580ada3c SC |
4015 | rc = write_driver_ver_to_cfgtable(cfgtable); |
4016 | if (rc) | |
4017 | goto unmap_vaddr; | |
edd16368 | 4018 | |
cf0b08d0 SC |
4019 | /* If reset via doorbell register is supported, use that. |
4020 | * There are two such methods. Favor the newest method. | |
4021 | */ | |
1df8552a | 4022 | misc_fw_support = readl(&cfgtable->misc_fw_support); |
cf0b08d0 SC |
4023 | use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2; |
4024 | if (use_doorbell) { | |
4025 | use_doorbell = DOORBELL_CTLR_RESET2; | |
4026 | } else { | |
4027 | use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET; | |
4028 | if (use_doorbell) { | |
fba63097 MM |
4029 | dev_warn(&pdev->dev, "Soft reset not supported. " |
4030 | "Firmware update is required.\n"); | |
64670ac8 | 4031 | rc = -ENOTSUPP; /* try soft reset */ |
cf0b08d0 SC |
4032 | goto unmap_cfgtable; |
4033 | } | |
4034 | } | |
edd16368 | 4035 | |
1df8552a SC |
4036 | rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell); |
4037 | if (rc) | |
4038 | goto unmap_cfgtable; | |
edd16368 | 4039 | |
270d05de SC |
4040 | pci_restore_state(pdev); |
4041 | rc = pci_enable_device(pdev); | |
4042 | if (rc) { | |
4043 | dev_warn(&pdev->dev, "failed to enable device.\n"); | |
4044 | goto unmap_cfgtable; | |
edd16368 | 4045 | } |
270d05de | 4046 | pci_write_config_word(pdev, 4, command_register); |
edd16368 | 4047 | |
1df8552a SC |
4048 | /* Some devices (notably the HP Smart Array 5i Controller) |
4049 | need a little pause here */ | |
4050 | msleep(HPSA_POST_RESET_PAUSE_MSECS); | |
4051 | ||
fe5389c8 SC |
4052 | rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY); |
4053 | if (rc) { | |
4054 | dev_warn(&pdev->dev, | |
64670ac8 SC |
4055 | "failed waiting for board to become ready " |
4056 | "after hard reset\n"); | |
fe5389c8 SC |
4057 | goto unmap_cfgtable; |
4058 | } | |
fe5389c8 | 4059 | |
580ada3c SC |
4060 | rc = controller_reset_failed(vaddr); |
4061 | if (rc < 0) | |
4062 | goto unmap_cfgtable; | |
4063 | if (rc) { | |
64670ac8 SC |
4064 | dev_warn(&pdev->dev, "Unable to successfully reset " |
4065 | "controller. Will try soft reset.\n"); | |
4066 | rc = -ENOTSUPP; | |
580ada3c | 4067 | } else { |
64670ac8 | 4068 | dev_info(&pdev->dev, "board ready after hard reset.\n"); |
1df8552a SC |
4069 | } |
4070 | ||
4071 | unmap_cfgtable: | |
4072 | iounmap(cfgtable); | |
4073 | ||
4074 | unmap_vaddr: | |
4075 | iounmap(vaddr); | |
4076 | return rc; | |
edd16368 SC |
4077 | } |
4078 | ||
4079 | /* | |
4080 | * We cannot read the structure directly, for portability we must use | |
4081 | * the io functions. | |
4082 | * This is for debug only. | |
4083 | */ | |
edd16368 SC |
4084 | static void print_cfg_table(struct device *dev, struct CfgTable *tb) |
4085 | { | |
58f8665c | 4086 | #ifdef HPSA_DEBUG |
edd16368 SC |
4087 | int i; |
4088 | char temp_name[17]; | |
4089 | ||
4090 | dev_info(dev, "Controller Configuration information\n"); | |
4091 | dev_info(dev, "------------------------------------\n"); | |
4092 | for (i = 0; i < 4; i++) | |
4093 | temp_name[i] = readb(&(tb->Signature[i])); | |
4094 | temp_name[4] = '\0'; | |
4095 | dev_info(dev, " Signature = %s\n", temp_name); | |
4096 | dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence))); | |
4097 | dev_info(dev, " Transport methods supported = 0x%x\n", | |
4098 | readl(&(tb->TransportSupport))); | |
4099 | dev_info(dev, " Transport methods active = 0x%x\n", | |
4100 | readl(&(tb->TransportActive))); | |
4101 | dev_info(dev, " Requested transport Method = 0x%x\n", | |
4102 | readl(&(tb->HostWrite.TransportRequest))); | |
4103 | dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n", | |
4104 | readl(&(tb->HostWrite.CoalIntDelay))); | |
4105 | dev_info(dev, " Coalesce Interrupt Count = 0x%x\n", | |
4106 | readl(&(tb->HostWrite.CoalIntCount))); | |
4107 | dev_info(dev, " Max outstanding commands = 0x%d\n", | |
4108 | readl(&(tb->CmdsOutMax))); | |
4109 | dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
4110 | for (i = 0; i < 16; i++) | |
4111 | temp_name[i] = readb(&(tb->ServerName[i])); | |
4112 | temp_name[16] = '\0'; | |
4113 | dev_info(dev, " Server Name = %s\n", temp_name); | |
4114 | dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n", | |
4115 | readl(&(tb->HeartBeat))); | |
edd16368 | 4116 | #endif /* HPSA_DEBUG */ |
58f8665c | 4117 | } |
edd16368 SC |
4118 | |
4119 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) | |
4120 | { | |
4121 | int i, offset, mem_type, bar_type; | |
4122 | ||
4123 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ | |
4124 | return 0; | |
4125 | offset = 0; | |
4126 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { | |
4127 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
4128 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) | |
4129 | offset += 4; | |
4130 | else { | |
4131 | mem_type = pci_resource_flags(pdev, i) & | |
4132 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; | |
4133 | switch (mem_type) { | |
4134 | case PCI_BASE_ADDRESS_MEM_TYPE_32: | |
4135 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
4136 | offset += 4; /* 32 bit */ | |
4137 | break; | |
4138 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
4139 | offset += 8; | |
4140 | break; | |
4141 | default: /* reserved in PCI 2.2 */ | |
4142 | dev_warn(&pdev->dev, | |
4143 | "base address is invalid\n"); | |
4144 | return -1; | |
4145 | break; | |
4146 | } | |
4147 | } | |
4148 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) | |
4149 | return i + 1; | |
4150 | } | |
4151 | return -1; | |
4152 | } | |
4153 | ||
4154 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on | |
4155 | * controllers that are capable. If not, we use IO-APIC mode. | |
4156 | */ | |
4157 | ||
6f039790 | 4158 | static void hpsa_interrupt_mode(struct ctlr_info *h) |
edd16368 SC |
4159 | { |
4160 | #ifdef CONFIG_PCI_MSI | |
254f796b MG |
4161 | int err, i; |
4162 | struct msix_entry hpsa_msix_entries[MAX_REPLY_QUEUES]; | |
4163 | ||
4164 | for (i = 0; i < MAX_REPLY_QUEUES; i++) { | |
4165 | hpsa_msix_entries[i].vector = 0; | |
4166 | hpsa_msix_entries[i].entry = i; | |
4167 | } | |
edd16368 SC |
4168 | |
4169 | /* Some boards advertise MSI but don't really support it */ | |
6b3f4c52 SC |
4170 | if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) || |
4171 | (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11)) | |
edd16368 | 4172 | goto default_int_mode; |
55c06c71 SC |
4173 | if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) { |
4174 | dev_info(&h->pdev->dev, "MSIX\n"); | |
eee0f03a | 4175 | h->msix_vector = MAX_REPLY_QUEUES; |
254f796b | 4176 | err = pci_enable_msix(h->pdev, hpsa_msix_entries, |
eee0f03a | 4177 | h->msix_vector); |
edd16368 | 4178 | if (err > 0) { |
55c06c71 | 4179 | dev_warn(&h->pdev->dev, "only %d MSI-X vectors " |
edd16368 | 4180 | "available\n", err); |
eee0f03a HR |
4181 | h->msix_vector = err; |
4182 | err = pci_enable_msix(h->pdev, hpsa_msix_entries, | |
4183 | h->msix_vector); | |
4184 | } | |
4185 | if (!err) { | |
4186 | for (i = 0; i < h->msix_vector; i++) | |
4187 | h->intr[i] = hpsa_msix_entries[i].vector; | |
4188 | return; | |
edd16368 | 4189 | } else { |
55c06c71 | 4190 | dev_warn(&h->pdev->dev, "MSI-X init failed %d\n", |
edd16368 | 4191 | err); |
eee0f03a | 4192 | h->msix_vector = 0; |
edd16368 SC |
4193 | goto default_int_mode; |
4194 | } | |
4195 | } | |
55c06c71 SC |
4196 | if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) { |
4197 | dev_info(&h->pdev->dev, "MSI\n"); | |
4198 | if (!pci_enable_msi(h->pdev)) | |
edd16368 SC |
4199 | h->msi_vector = 1; |
4200 | else | |
55c06c71 | 4201 | dev_warn(&h->pdev->dev, "MSI init failed\n"); |
edd16368 SC |
4202 | } |
4203 | default_int_mode: | |
4204 | #endif /* CONFIG_PCI_MSI */ | |
4205 | /* if we get here we're going to use the default interrupt mode */ | |
a9a3a273 | 4206 | h->intr[h->intr_mode] = h->pdev->irq; |
edd16368 SC |
4207 | } |
4208 | ||
6f039790 | 4209 | static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id) |
e5c880d1 SC |
4210 | { |
4211 | int i; | |
4212 | u32 subsystem_vendor_id, subsystem_device_id; | |
4213 | ||
4214 | subsystem_vendor_id = pdev->subsystem_vendor; | |
4215 | subsystem_device_id = pdev->subsystem_device; | |
4216 | *board_id = ((subsystem_device_id << 16) & 0xffff0000) | | |
4217 | subsystem_vendor_id; | |
4218 | ||
4219 | for (i = 0; i < ARRAY_SIZE(products); i++) | |
4220 | if (*board_id == products[i].board_id) | |
4221 | return i; | |
4222 | ||
6798cc0a SC |
4223 | if ((subsystem_vendor_id != PCI_VENDOR_ID_HP && |
4224 | subsystem_vendor_id != PCI_VENDOR_ID_COMPAQ) || | |
4225 | !hpsa_allow_any) { | |
e5c880d1 SC |
4226 | dev_warn(&pdev->dev, "unrecognized board ID: " |
4227 | "0x%08x, ignoring.\n", *board_id); | |
4228 | return -ENODEV; | |
4229 | } | |
4230 | return ARRAY_SIZE(products) - 1; /* generic unknown smart array */ | |
4231 | } | |
4232 | ||
6f039790 GKH |
4233 | static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev, |
4234 | unsigned long *memory_bar) | |
3a7774ce SC |
4235 | { |
4236 | int i; | |
4237 | ||
4238 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) | |
12d2cd47 | 4239 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { |
3a7774ce | 4240 | /* addressing mode bits already removed */ |
12d2cd47 SC |
4241 | *memory_bar = pci_resource_start(pdev, i); |
4242 | dev_dbg(&pdev->dev, "memory BAR = %lx\n", | |
3a7774ce SC |
4243 | *memory_bar); |
4244 | return 0; | |
4245 | } | |
12d2cd47 | 4246 | dev_warn(&pdev->dev, "no memory BAR found\n"); |
3a7774ce SC |
4247 | return -ENODEV; |
4248 | } | |
4249 | ||
6f039790 GKH |
4250 | static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr, |
4251 | int wait_for_ready) | |
2c4c8c8b | 4252 | { |
fe5389c8 | 4253 | int i, iterations; |
2c4c8c8b | 4254 | u32 scratchpad; |
fe5389c8 SC |
4255 | if (wait_for_ready) |
4256 | iterations = HPSA_BOARD_READY_ITERATIONS; | |
4257 | else | |
4258 | iterations = HPSA_BOARD_NOT_READY_ITERATIONS; | |
2c4c8c8b | 4259 | |
fe5389c8 SC |
4260 | for (i = 0; i < iterations; i++) { |
4261 | scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET); | |
4262 | if (wait_for_ready) { | |
4263 | if (scratchpad == HPSA_FIRMWARE_READY) | |
4264 | return 0; | |
4265 | } else { | |
4266 | if (scratchpad != HPSA_FIRMWARE_READY) | |
4267 | return 0; | |
4268 | } | |
2c4c8c8b SC |
4269 | msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS); |
4270 | } | |
fe5389c8 | 4271 | dev_warn(&pdev->dev, "board not ready, timed out.\n"); |
2c4c8c8b SC |
4272 | return -ENODEV; |
4273 | } | |
4274 | ||
6f039790 GKH |
4275 | static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr, |
4276 | u32 *cfg_base_addr, u64 *cfg_base_addr_index, | |
4277 | u64 *cfg_offset) | |
a51fd47f SC |
4278 | { |
4279 | *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET); | |
4280 | *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET); | |
4281 | *cfg_base_addr &= (u32) 0x0000ffff; | |
4282 | *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr); | |
4283 | if (*cfg_base_addr_index == -1) { | |
4284 | dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n"); | |
4285 | return -ENODEV; | |
4286 | } | |
4287 | return 0; | |
4288 | } | |
4289 | ||
6f039790 | 4290 | static int hpsa_find_cfgtables(struct ctlr_info *h) |
edd16368 | 4291 | { |
01a02ffc SC |
4292 | u64 cfg_offset; |
4293 | u32 cfg_base_addr; | |
4294 | u64 cfg_base_addr_index; | |
303932fd | 4295 | u32 trans_offset; |
a51fd47f | 4296 | int rc; |
77c4495c | 4297 | |
a51fd47f SC |
4298 | rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr, |
4299 | &cfg_base_addr_index, &cfg_offset); | |
4300 | if (rc) | |
4301 | return rc; | |
77c4495c | 4302 | h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev, |
a51fd47f | 4303 | cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable)); |
77c4495c SC |
4304 | if (!h->cfgtable) |
4305 | return -ENOMEM; | |
580ada3c SC |
4306 | rc = write_driver_ver_to_cfgtable(h->cfgtable); |
4307 | if (rc) | |
4308 | return rc; | |
77c4495c | 4309 | /* Find performant mode table. */ |
a51fd47f | 4310 | trans_offset = readl(&h->cfgtable->TransMethodOffset); |
77c4495c SC |
4311 | h->transtable = remap_pci_mem(pci_resource_start(h->pdev, |
4312 | cfg_base_addr_index)+cfg_offset+trans_offset, | |
4313 | sizeof(*h->transtable)); | |
4314 | if (!h->transtable) | |
4315 | return -ENOMEM; | |
4316 | return 0; | |
4317 | } | |
4318 | ||
6f039790 | 4319 | static void hpsa_get_max_perf_mode_cmds(struct ctlr_info *h) |
cba3d38b SC |
4320 | { |
4321 | h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); | |
72ceeaec SC |
4322 | |
4323 | /* Limit commands in memory limited kdump scenario. */ | |
4324 | if (reset_devices && h->max_commands > 32) | |
4325 | h->max_commands = 32; | |
4326 | ||
cba3d38b SC |
4327 | if (h->max_commands < 16) { |
4328 | dev_warn(&h->pdev->dev, "Controller reports " | |
4329 | "max supported commands of %d, an obvious lie. " | |
4330 | "Using 16. Ensure that firmware is up to date.\n", | |
4331 | h->max_commands); | |
4332 | h->max_commands = 16; | |
4333 | } | |
4334 | } | |
4335 | ||
b93d7536 SC |
4336 | /* Interrogate the hardware for some limits: |
4337 | * max commands, max SG elements without chaining, and with chaining, | |
4338 | * SG chain block size, etc. | |
4339 | */ | |
6f039790 | 4340 | static void hpsa_find_board_params(struct ctlr_info *h) |
b93d7536 | 4341 | { |
cba3d38b | 4342 | hpsa_get_max_perf_mode_cmds(h); |
b93d7536 SC |
4343 | h->nr_cmds = h->max_commands - 4; /* Allow room for some ioctls */ |
4344 | h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements)); | |
4345 | /* | |
4346 | * Limit in-command s/g elements to 32 save dma'able memory. | |
4347 | * Howvever spec says if 0, use 31 | |
4348 | */ | |
4349 | h->max_cmd_sg_entries = 31; | |
4350 | if (h->maxsgentries > 512) { | |
4351 | h->max_cmd_sg_entries = 32; | |
4352 | h->chainsize = h->maxsgentries - h->max_cmd_sg_entries + 1; | |
4353 | h->maxsgentries--; /* save one for chain pointer */ | |
4354 | } else { | |
4355 | h->maxsgentries = 31; /* default to traditional values */ | |
4356 | h->chainsize = 0; | |
4357 | } | |
75167d2c SC |
4358 | |
4359 | /* Find out what task management functions are supported and cache */ | |
4360 | h->TMFSupportFlags = readl(&(h->cfgtable->TMFSupportFlags)); | |
b93d7536 SC |
4361 | } |
4362 | ||
76c46e49 SC |
4363 | static inline bool hpsa_CISS_signature_present(struct ctlr_info *h) |
4364 | { | |
0fc9fd40 | 4365 | if (!check_signature(h->cfgtable->Signature, "CISS", 4)) { |
76c46e49 SC |
4366 | dev_warn(&h->pdev->dev, "not a valid CISS config table\n"); |
4367 | return false; | |
4368 | } | |
4369 | return true; | |
4370 | } | |
4371 | ||
97a5e98c | 4372 | static inline void hpsa_set_driver_support_bits(struct ctlr_info *h) |
f7c39101 | 4373 | { |
97a5e98c | 4374 | u32 driver_support; |
f7c39101 | 4375 | |
28e13446 SC |
4376 | #ifdef CONFIG_X86 |
4377 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ | |
97a5e98c SC |
4378 | driver_support = readl(&(h->cfgtable->driver_support)); |
4379 | driver_support |= ENABLE_SCSI_PREFETCH; | |
f7c39101 | 4380 | #endif |
28e13446 SC |
4381 | driver_support |= ENABLE_UNIT_ATTN; |
4382 | writel(driver_support, &(h->cfgtable->driver_support)); | |
f7c39101 SC |
4383 | } |
4384 | ||
3d0eab67 SC |
4385 | /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result |
4386 | * in a prefetch beyond physical memory. | |
4387 | */ | |
4388 | static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h) | |
4389 | { | |
4390 | u32 dma_prefetch; | |
4391 | ||
4392 | if (h->board_id != 0x3225103C) | |
4393 | return; | |
4394 | dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG); | |
4395 | dma_prefetch |= 0x8000; | |
4396 | writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG); | |
4397 | } | |
4398 | ||
6f039790 | 4399 | static void hpsa_wait_for_mode_change_ack(struct ctlr_info *h) |
eb6b2ae9 SC |
4400 | { |
4401 | int i; | |
6eaf46fd SC |
4402 | u32 doorbell_value; |
4403 | unsigned long flags; | |
eb6b2ae9 SC |
4404 | |
4405 | /* under certain very rare conditions, this can take awhile. | |
4406 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
4407 | * as we enter this code.) | |
4408 | */ | |
4409 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { | |
6eaf46fd SC |
4410 | spin_lock_irqsave(&h->lock, flags); |
4411 | doorbell_value = readl(h->vaddr + SA5_DOORBELL); | |
4412 | spin_unlock_irqrestore(&h->lock, flags); | |
382be668 | 4413 | if (!(doorbell_value & CFGTBL_ChangeReq)) |
eb6b2ae9 SC |
4414 | break; |
4415 | /* delay and try again */ | |
60d3f5b0 | 4416 | usleep_range(10000, 20000); |
eb6b2ae9 | 4417 | } |
3f4336f3 SC |
4418 | } |
4419 | ||
6f039790 | 4420 | static int hpsa_enter_simple_mode(struct ctlr_info *h) |
3f4336f3 SC |
4421 | { |
4422 | u32 trans_support; | |
4423 | ||
4424 | trans_support = readl(&(h->cfgtable->TransportSupport)); | |
4425 | if (!(trans_support & SIMPLE_MODE)) | |
4426 | return -ENOTSUPP; | |
4427 | ||
4428 | h->max_commands = readl(&(h->cfgtable->CmdsOutMax)); | |
4429 | /* Update the field, and then ring the doorbell */ | |
4430 | writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest)); | |
4431 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); | |
4432 | hpsa_wait_for_mode_change_ack(h); | |
eb6b2ae9 | 4433 | print_cfg_table(&h->pdev->dev, h->cfgtable); |
eb6b2ae9 SC |
4434 | if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
4435 | dev_warn(&h->pdev->dev, | |
4436 | "unable to get board into simple mode\n"); | |
4437 | return -ENODEV; | |
4438 | } | |
960a30e7 | 4439 | h->transMethod = CFGTBL_Trans_Simple; |
eb6b2ae9 SC |
4440 | return 0; |
4441 | } | |
4442 | ||
6f039790 | 4443 | static int hpsa_pci_init(struct ctlr_info *h) |
77c4495c | 4444 | { |
eb6b2ae9 | 4445 | int prod_index, err; |
edd16368 | 4446 | |
e5c880d1 SC |
4447 | prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id); |
4448 | if (prod_index < 0) | |
4449 | return -ENODEV; | |
4450 | h->product_name = products[prod_index].product_name; | |
4451 | h->access = *(products[prod_index].access); | |
edd16368 | 4452 | |
e5a44df8 MG |
4453 | pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S | |
4454 | PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM); | |
4455 | ||
55c06c71 | 4456 | err = pci_enable_device(h->pdev); |
edd16368 | 4457 | if (err) { |
55c06c71 | 4458 | dev_warn(&h->pdev->dev, "unable to enable PCI device\n"); |
edd16368 SC |
4459 | return err; |
4460 | } | |
4461 | ||
5cb460a6 SC |
4462 | /* Enable bus mastering (pci_disable_device may disable this) */ |
4463 | pci_set_master(h->pdev); | |
4464 | ||
f79cfec6 | 4465 | err = pci_request_regions(h->pdev, HPSA); |
edd16368 | 4466 | if (err) { |
55c06c71 SC |
4467 | dev_err(&h->pdev->dev, |
4468 | "cannot obtain PCI resources, aborting\n"); | |
edd16368 SC |
4469 | return err; |
4470 | } | |
6b3f4c52 | 4471 | hpsa_interrupt_mode(h); |
12d2cd47 | 4472 | err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr); |
3a7774ce | 4473 | if (err) |
edd16368 | 4474 | goto err_out_free_res; |
edd16368 | 4475 | h->vaddr = remap_pci_mem(h->paddr, 0x250); |
204892e9 SC |
4476 | if (!h->vaddr) { |
4477 | err = -ENOMEM; | |
4478 | goto err_out_free_res; | |
4479 | } | |
fe5389c8 | 4480 | err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY); |
2c4c8c8b | 4481 | if (err) |
edd16368 | 4482 | goto err_out_free_res; |
77c4495c SC |
4483 | err = hpsa_find_cfgtables(h); |
4484 | if (err) | |
edd16368 | 4485 | goto err_out_free_res; |
b93d7536 | 4486 | hpsa_find_board_params(h); |
edd16368 | 4487 | |
76c46e49 | 4488 | if (!hpsa_CISS_signature_present(h)) { |
edd16368 SC |
4489 | err = -ENODEV; |
4490 | goto err_out_free_res; | |
4491 | } | |
97a5e98c | 4492 | hpsa_set_driver_support_bits(h); |
3d0eab67 | 4493 | hpsa_p600_dma_prefetch_quirk(h); |
eb6b2ae9 SC |
4494 | err = hpsa_enter_simple_mode(h); |
4495 | if (err) | |
edd16368 | 4496 | goto err_out_free_res; |
edd16368 SC |
4497 | return 0; |
4498 | ||
4499 | err_out_free_res: | |
204892e9 SC |
4500 | if (h->transtable) |
4501 | iounmap(h->transtable); | |
4502 | if (h->cfgtable) | |
4503 | iounmap(h->cfgtable); | |
4504 | if (h->vaddr) | |
4505 | iounmap(h->vaddr); | |
f0bd0b68 | 4506 | pci_disable_device(h->pdev); |
55c06c71 | 4507 | pci_release_regions(h->pdev); |
edd16368 SC |
4508 | return err; |
4509 | } | |
4510 | ||
6f039790 | 4511 | static void hpsa_hba_inquiry(struct ctlr_info *h) |
339b2b14 SC |
4512 | { |
4513 | int rc; | |
4514 | ||
4515 | #define HBA_INQUIRY_BYTE_COUNT 64 | |
4516 | h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL); | |
4517 | if (!h->hba_inquiry_data) | |
4518 | return; | |
4519 | rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0, | |
4520 | h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT); | |
4521 | if (rc != 0) { | |
4522 | kfree(h->hba_inquiry_data); | |
4523 | h->hba_inquiry_data = NULL; | |
4524 | } | |
4525 | } | |
4526 | ||
6f039790 | 4527 | static int hpsa_init_reset_devices(struct pci_dev *pdev) |
4c2a8c40 | 4528 | { |
1df8552a | 4529 | int rc, i; |
4c2a8c40 SC |
4530 | |
4531 | if (!reset_devices) | |
4532 | return 0; | |
4533 | ||
1df8552a SC |
4534 | /* Reset the controller with a PCI power-cycle or via doorbell */ |
4535 | rc = hpsa_kdump_hard_reset_controller(pdev); | |
4c2a8c40 | 4536 | |
1df8552a SC |
4537 | /* -ENOTSUPP here means we cannot reset the controller |
4538 | * but it's already (and still) up and running in | |
18867659 SC |
4539 | * "performant mode". Or, it might be 640x, which can't reset |
4540 | * due to concerns about shared bbwc between 6402/6404 pair. | |
1df8552a SC |
4541 | */ |
4542 | if (rc == -ENOTSUPP) | |
64670ac8 | 4543 | return rc; /* just try to do the kdump anyhow. */ |
1df8552a SC |
4544 | if (rc) |
4545 | return -ENODEV; | |
4c2a8c40 SC |
4546 | |
4547 | /* Now try to get the controller to respond to a no-op */ | |
2b870cb3 | 4548 | dev_warn(&pdev->dev, "Waiting for controller to respond to no-op\n"); |
4c2a8c40 SC |
4549 | for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) { |
4550 | if (hpsa_noop(pdev) == 0) | |
4551 | break; | |
4552 | else | |
4553 | dev_warn(&pdev->dev, "no-op failed%s\n", | |
4554 | (i < 11 ? "; re-trying" : "")); | |
4555 | } | |
4556 | return 0; | |
4557 | } | |
4558 | ||
6f039790 | 4559 | static int hpsa_allocate_cmd_pool(struct ctlr_info *h) |
2e9d1b36 SC |
4560 | { |
4561 | h->cmd_pool_bits = kzalloc( | |
4562 | DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) * | |
4563 | sizeof(unsigned long), GFP_KERNEL); | |
4564 | h->cmd_pool = pci_alloc_consistent(h->pdev, | |
4565 | h->nr_cmds * sizeof(*h->cmd_pool), | |
4566 | &(h->cmd_pool_dhandle)); | |
4567 | h->errinfo_pool = pci_alloc_consistent(h->pdev, | |
4568 | h->nr_cmds * sizeof(*h->errinfo_pool), | |
4569 | &(h->errinfo_pool_dhandle)); | |
4570 | if ((h->cmd_pool_bits == NULL) | |
4571 | || (h->cmd_pool == NULL) | |
4572 | || (h->errinfo_pool == NULL)) { | |
4573 | dev_err(&h->pdev->dev, "out of memory in %s", __func__); | |
4574 | return -ENOMEM; | |
4575 | } | |
4576 | return 0; | |
4577 | } | |
4578 | ||
4579 | static void hpsa_free_cmd_pool(struct ctlr_info *h) | |
4580 | { | |
4581 | kfree(h->cmd_pool_bits); | |
4582 | if (h->cmd_pool) | |
4583 | pci_free_consistent(h->pdev, | |
4584 | h->nr_cmds * sizeof(struct CommandList), | |
4585 | h->cmd_pool, h->cmd_pool_dhandle); | |
4586 | if (h->errinfo_pool) | |
4587 | pci_free_consistent(h->pdev, | |
4588 | h->nr_cmds * sizeof(struct ErrorInfo), | |
4589 | h->errinfo_pool, | |
4590 | h->errinfo_pool_dhandle); | |
4591 | } | |
4592 | ||
0ae01a32 SC |
4593 | static int hpsa_request_irq(struct ctlr_info *h, |
4594 | irqreturn_t (*msixhandler)(int, void *), | |
4595 | irqreturn_t (*intxhandler)(int, void *)) | |
4596 | { | |
254f796b | 4597 | int rc, i; |
0ae01a32 | 4598 | |
254f796b MG |
4599 | /* |
4600 | * initialize h->q[x] = x so that interrupt handlers know which | |
4601 | * queue to process. | |
4602 | */ | |
4603 | for (i = 0; i < MAX_REPLY_QUEUES; i++) | |
4604 | h->q[i] = (u8) i; | |
4605 | ||
eee0f03a | 4606 | if (h->intr_mode == PERF_MODE_INT && h->msix_vector > 0) { |
254f796b | 4607 | /* If performant mode and MSI-X, use multiple reply queues */ |
eee0f03a | 4608 | for (i = 0; i < h->msix_vector; i++) |
254f796b MG |
4609 | rc = request_irq(h->intr[i], msixhandler, |
4610 | 0, h->devname, | |
4611 | &h->q[i]); | |
4612 | } else { | |
4613 | /* Use single reply pool */ | |
eee0f03a | 4614 | if (h->msix_vector > 0 || h->msi_vector) { |
254f796b MG |
4615 | rc = request_irq(h->intr[h->intr_mode], |
4616 | msixhandler, 0, h->devname, | |
4617 | &h->q[h->intr_mode]); | |
4618 | } else { | |
4619 | rc = request_irq(h->intr[h->intr_mode], | |
4620 | intxhandler, IRQF_SHARED, h->devname, | |
4621 | &h->q[h->intr_mode]); | |
4622 | } | |
4623 | } | |
0ae01a32 SC |
4624 | if (rc) { |
4625 | dev_err(&h->pdev->dev, "unable to get irq %d for %s\n", | |
4626 | h->intr[h->intr_mode], h->devname); | |
4627 | return -ENODEV; | |
4628 | } | |
4629 | return 0; | |
4630 | } | |
4631 | ||
6f039790 | 4632 | static int hpsa_kdump_soft_reset(struct ctlr_info *h) |
64670ac8 SC |
4633 | { |
4634 | if (hpsa_send_host_reset(h, RAID_CTLR_LUNID, | |
4635 | HPSA_RESET_TYPE_CONTROLLER)) { | |
4636 | dev_warn(&h->pdev->dev, "Resetting array controller failed.\n"); | |
4637 | return -EIO; | |
4638 | } | |
4639 | ||
4640 | dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n"); | |
4641 | if (hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY)) { | |
4642 | dev_warn(&h->pdev->dev, "Soft reset had no effect.\n"); | |
4643 | return -1; | |
4644 | } | |
4645 | ||
4646 | dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n"); | |
4647 | if (hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY)) { | |
4648 | dev_warn(&h->pdev->dev, "Board failed to become ready " | |
4649 | "after soft reset.\n"); | |
4650 | return -1; | |
4651 | } | |
4652 | ||
4653 | return 0; | |
4654 | } | |
4655 | ||
254f796b MG |
4656 | static void free_irqs(struct ctlr_info *h) |
4657 | { | |
4658 | int i; | |
4659 | ||
4660 | if (!h->msix_vector || h->intr_mode != PERF_MODE_INT) { | |
4661 | /* Single reply queue, only one irq to free */ | |
4662 | i = h->intr_mode; | |
4663 | free_irq(h->intr[i], &h->q[i]); | |
4664 | return; | |
4665 | } | |
4666 | ||
eee0f03a | 4667 | for (i = 0; i < h->msix_vector; i++) |
254f796b MG |
4668 | free_irq(h->intr[i], &h->q[i]); |
4669 | } | |
4670 | ||
0097f0f4 | 4671 | static void hpsa_free_irqs_and_disable_msix(struct ctlr_info *h) |
64670ac8 | 4672 | { |
254f796b | 4673 | free_irqs(h); |
64670ac8 | 4674 | #ifdef CONFIG_PCI_MSI |
0097f0f4 SC |
4675 | if (h->msix_vector) { |
4676 | if (h->pdev->msix_enabled) | |
4677 | pci_disable_msix(h->pdev); | |
4678 | } else if (h->msi_vector) { | |
4679 | if (h->pdev->msi_enabled) | |
4680 | pci_disable_msi(h->pdev); | |
4681 | } | |
64670ac8 | 4682 | #endif /* CONFIG_PCI_MSI */ |
0097f0f4 SC |
4683 | } |
4684 | ||
4685 | static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h) | |
4686 | { | |
4687 | hpsa_free_irqs_and_disable_msix(h); | |
64670ac8 SC |
4688 | hpsa_free_sg_chain_blocks(h); |
4689 | hpsa_free_cmd_pool(h); | |
4690 | kfree(h->blockFetchTable); | |
4691 | pci_free_consistent(h->pdev, h->reply_pool_size, | |
4692 | h->reply_pool, h->reply_pool_dhandle); | |
4693 | if (h->vaddr) | |
4694 | iounmap(h->vaddr); | |
4695 | if (h->transtable) | |
4696 | iounmap(h->transtable); | |
4697 | if (h->cfgtable) | |
4698 | iounmap(h->cfgtable); | |
4699 | pci_release_regions(h->pdev); | |
4700 | kfree(h); | |
4701 | } | |
4702 | ||
a0c12413 SC |
4703 | /* Called when controller lockup detected. */ |
4704 | static void fail_all_cmds_on_list(struct ctlr_info *h, struct list_head *list) | |
4705 | { | |
4706 | struct CommandList *c = NULL; | |
4707 | ||
4708 | assert_spin_locked(&h->lock); | |
4709 | /* Mark all outstanding commands as failed and complete them. */ | |
4710 | while (!list_empty(list)) { | |
4711 | c = list_entry(list->next, struct CommandList, list); | |
4712 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; | |
5a3d16f5 | 4713 | finish_cmd(c); |
a0c12413 SC |
4714 | } |
4715 | } | |
4716 | ||
4717 | static void controller_lockup_detected(struct ctlr_info *h) | |
4718 | { | |
4719 | unsigned long flags; | |
4720 | ||
a0c12413 SC |
4721 | h->access.set_intr_mask(h, HPSA_INTR_OFF); |
4722 | spin_lock_irqsave(&h->lock, flags); | |
4723 | h->lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); | |
4724 | spin_unlock_irqrestore(&h->lock, flags); | |
4725 | dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x\n", | |
4726 | h->lockup_detected); | |
4727 | pci_disable_device(h->pdev); | |
4728 | spin_lock_irqsave(&h->lock, flags); | |
4729 | fail_all_cmds_on_list(h, &h->cmpQ); | |
4730 | fail_all_cmds_on_list(h, &h->reqQ); | |
4731 | spin_unlock_irqrestore(&h->lock, flags); | |
4732 | } | |
4733 | ||
a0c12413 SC |
4734 | static void detect_controller_lockup(struct ctlr_info *h) |
4735 | { | |
4736 | u64 now; | |
4737 | u32 heartbeat; | |
4738 | unsigned long flags; | |
4739 | ||
a0c12413 SC |
4740 | now = get_jiffies_64(); |
4741 | /* If we've received an interrupt recently, we're ok. */ | |
4742 | if (time_after64(h->last_intr_timestamp + | |
e85c5974 | 4743 | (h->heartbeat_sample_interval), now)) |
a0c12413 SC |
4744 | return; |
4745 | ||
4746 | /* | |
4747 | * If we've already checked the heartbeat recently, we're ok. | |
4748 | * This could happen if someone sends us a signal. We | |
4749 | * otherwise don't care about signals in this thread. | |
4750 | */ | |
4751 | if (time_after64(h->last_heartbeat_timestamp + | |
e85c5974 | 4752 | (h->heartbeat_sample_interval), now)) |
a0c12413 SC |
4753 | return; |
4754 | ||
4755 | /* If heartbeat has not changed since we last looked, we're not ok. */ | |
4756 | spin_lock_irqsave(&h->lock, flags); | |
4757 | heartbeat = readl(&h->cfgtable->HeartBeat); | |
4758 | spin_unlock_irqrestore(&h->lock, flags); | |
4759 | if (h->last_heartbeat == heartbeat) { | |
4760 | controller_lockup_detected(h); | |
4761 | return; | |
4762 | } | |
4763 | ||
4764 | /* We're ok. */ | |
4765 | h->last_heartbeat = heartbeat; | |
4766 | h->last_heartbeat_timestamp = now; | |
4767 | } | |
4768 | ||
8a98db73 | 4769 | static void hpsa_monitor_ctlr_worker(struct work_struct *work) |
a0c12413 SC |
4770 | { |
4771 | unsigned long flags; | |
8a98db73 SC |
4772 | struct ctlr_info *h = container_of(to_delayed_work(work), |
4773 | struct ctlr_info, monitor_ctlr_work); | |
4774 | detect_controller_lockup(h); | |
4775 | if (h->lockup_detected) | |
4776 | return; | |
4777 | spin_lock_irqsave(&h->lock, flags); | |
4778 | if (h->remove_in_progress) { | |
4779 | spin_unlock_irqrestore(&h->lock, flags); | |
a0c12413 SC |
4780 | return; |
4781 | } | |
8a98db73 SC |
4782 | schedule_delayed_work(&h->monitor_ctlr_work, |
4783 | h->heartbeat_sample_interval); | |
4784 | spin_unlock_irqrestore(&h->lock, flags); | |
a0c12413 SC |
4785 | } |
4786 | ||
6f039790 | 4787 | static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) |
edd16368 | 4788 | { |
4c2a8c40 | 4789 | int dac, rc; |
edd16368 | 4790 | struct ctlr_info *h; |
64670ac8 SC |
4791 | int try_soft_reset = 0; |
4792 | unsigned long flags; | |
edd16368 SC |
4793 | |
4794 | if (number_of_controllers == 0) | |
4795 | printk(KERN_INFO DRIVER_NAME "\n"); | |
edd16368 | 4796 | |
4c2a8c40 | 4797 | rc = hpsa_init_reset_devices(pdev); |
64670ac8 SC |
4798 | if (rc) { |
4799 | if (rc != -ENOTSUPP) | |
4800 | return rc; | |
4801 | /* If the reset fails in a particular way (it has no way to do | |
4802 | * a proper hard reset, so returns -ENOTSUPP) we can try to do | |
4803 | * a soft reset once we get the controller configured up to the | |
4804 | * point that it can accept a command. | |
4805 | */ | |
4806 | try_soft_reset = 1; | |
4807 | rc = 0; | |
4808 | } | |
4809 | ||
4810 | reinit_after_soft_reset: | |
edd16368 | 4811 | |
303932fd DB |
4812 | /* Command structures must be aligned on a 32-byte boundary because |
4813 | * the 5 lower bits of the address are used by the hardware. and by | |
4814 | * the driver. See comments in hpsa.h for more info. | |
4815 | */ | |
4816 | #define COMMANDLIST_ALIGNMENT 32 | |
4817 | BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT); | |
edd16368 SC |
4818 | h = kzalloc(sizeof(*h), GFP_KERNEL); |
4819 | if (!h) | |
ecd9aad4 | 4820 | return -ENOMEM; |
edd16368 | 4821 | |
55c06c71 | 4822 | h->pdev = pdev; |
a9a3a273 | 4823 | h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT; |
9e0fc764 SC |
4824 | INIT_LIST_HEAD(&h->cmpQ); |
4825 | INIT_LIST_HEAD(&h->reqQ); | |
6eaf46fd SC |
4826 | spin_lock_init(&h->lock); |
4827 | spin_lock_init(&h->scan_lock); | |
0390f0c0 | 4828 | spin_lock_init(&h->passthru_count_lock); |
55c06c71 | 4829 | rc = hpsa_pci_init(h); |
ecd9aad4 | 4830 | if (rc != 0) |
edd16368 SC |
4831 | goto clean1; |
4832 | ||
f79cfec6 | 4833 | sprintf(h->devname, HPSA "%d", number_of_controllers); |
edd16368 SC |
4834 | h->ctlr = number_of_controllers; |
4835 | number_of_controllers++; | |
edd16368 SC |
4836 | |
4837 | /* configure PCI DMA stuff */ | |
ecd9aad4 SC |
4838 | rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); |
4839 | if (rc == 0) { | |
edd16368 | 4840 | dac = 1; |
ecd9aad4 SC |
4841 | } else { |
4842 | rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); | |
4843 | if (rc == 0) { | |
4844 | dac = 0; | |
4845 | } else { | |
4846 | dev_err(&pdev->dev, "no suitable DMA available\n"); | |
4847 | goto clean1; | |
4848 | } | |
edd16368 SC |
4849 | } |
4850 | ||
4851 | /* make sure the board interrupts are off */ | |
4852 | h->access.set_intr_mask(h, HPSA_INTR_OFF); | |
10f66018 | 4853 | |
0ae01a32 | 4854 | if (hpsa_request_irq(h, do_hpsa_intr_msi, do_hpsa_intr_intx)) |
edd16368 | 4855 | goto clean2; |
303932fd DB |
4856 | dev_info(&pdev->dev, "%s: <0x%x> at IRQ %d%s using DAC\n", |
4857 | h->devname, pdev->device, | |
a9a3a273 | 4858 | h->intr[h->intr_mode], dac ? "" : " not"); |
2e9d1b36 | 4859 | if (hpsa_allocate_cmd_pool(h)) |
edd16368 | 4860 | goto clean4; |
33a2ffce SC |
4861 | if (hpsa_allocate_sg_chain_blocks(h)) |
4862 | goto clean4; | |
a08a8471 SC |
4863 | init_waitqueue_head(&h->scan_wait_queue); |
4864 | h->scan_finished = 1; /* no scan currently in progress */ | |
edd16368 SC |
4865 | |
4866 | pci_set_drvdata(pdev, h); | |
9a41338e SC |
4867 | h->ndevices = 0; |
4868 | h->scsi_host = NULL; | |
4869 | spin_lock_init(&h->devlock); | |
64670ac8 SC |
4870 | hpsa_put_ctlr_into_performant_mode(h); |
4871 | ||
4872 | /* At this point, the controller is ready to take commands. | |
4873 | * Now, if reset_devices and the hard reset didn't work, try | |
4874 | * the soft reset and see if that works. | |
4875 | */ | |
4876 | if (try_soft_reset) { | |
4877 | ||
4878 | /* This is kind of gross. We may or may not get a completion | |
4879 | * from the soft reset command, and if we do, then the value | |
4880 | * from the fifo may or may not be valid. So, we wait 10 secs | |
4881 | * after the reset throwing away any completions we get during | |
4882 | * that time. Unregister the interrupt handler and register | |
4883 | * fake ones to scoop up any residual completions. | |
4884 | */ | |
4885 | spin_lock_irqsave(&h->lock, flags); | |
4886 | h->access.set_intr_mask(h, HPSA_INTR_OFF); | |
4887 | spin_unlock_irqrestore(&h->lock, flags); | |
254f796b | 4888 | free_irqs(h); |
64670ac8 SC |
4889 | rc = hpsa_request_irq(h, hpsa_msix_discard_completions, |
4890 | hpsa_intx_discard_completions); | |
4891 | if (rc) { | |
4892 | dev_warn(&h->pdev->dev, "Failed to request_irq after " | |
4893 | "soft reset.\n"); | |
4894 | goto clean4; | |
4895 | } | |
4896 | ||
4897 | rc = hpsa_kdump_soft_reset(h); | |
4898 | if (rc) | |
4899 | /* Neither hard nor soft reset worked, we're hosed. */ | |
4900 | goto clean4; | |
4901 | ||
4902 | dev_info(&h->pdev->dev, "Board READY.\n"); | |
4903 | dev_info(&h->pdev->dev, | |
4904 | "Waiting for stale completions to drain.\n"); | |
4905 | h->access.set_intr_mask(h, HPSA_INTR_ON); | |
4906 | msleep(10000); | |
4907 | h->access.set_intr_mask(h, HPSA_INTR_OFF); | |
4908 | ||
4909 | rc = controller_reset_failed(h->cfgtable); | |
4910 | if (rc) | |
4911 | dev_info(&h->pdev->dev, | |
4912 | "Soft reset appears to have failed.\n"); | |
4913 | ||
4914 | /* since the controller's reset, we have to go back and re-init | |
4915 | * everything. Easiest to just forget what we've done and do it | |
4916 | * all over again. | |
4917 | */ | |
4918 | hpsa_undo_allocations_after_kdump_soft_reset(h); | |
4919 | try_soft_reset = 0; | |
4920 | if (rc) | |
4921 | /* don't go to clean4, we already unallocated */ | |
4922 | return -ENODEV; | |
4923 | ||
4924 | goto reinit_after_soft_reset; | |
4925 | } | |
edd16368 SC |
4926 | |
4927 | /* Turn the interrupts on so we can service requests */ | |
4928 | h->access.set_intr_mask(h, HPSA_INTR_ON); | |
4929 | ||
339b2b14 | 4930 | hpsa_hba_inquiry(h); |
edd16368 | 4931 | hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */ |
8a98db73 SC |
4932 | |
4933 | /* Monitor the controller for firmware lockups */ | |
4934 | h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL; | |
4935 | INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker); | |
4936 | schedule_delayed_work(&h->monitor_ctlr_work, | |
4937 | h->heartbeat_sample_interval); | |
88bf6d62 | 4938 | return 0; |
edd16368 SC |
4939 | |
4940 | clean4: | |
33a2ffce | 4941 | hpsa_free_sg_chain_blocks(h); |
2e9d1b36 | 4942 | hpsa_free_cmd_pool(h); |
254f796b | 4943 | free_irqs(h); |
edd16368 SC |
4944 | clean2: |
4945 | clean1: | |
edd16368 | 4946 | kfree(h); |
ecd9aad4 | 4947 | return rc; |
edd16368 SC |
4948 | } |
4949 | ||
4950 | static void hpsa_flush_cache(struct ctlr_info *h) | |
4951 | { | |
4952 | char *flush_buf; | |
4953 | struct CommandList *c; | |
702890e3 SC |
4954 | unsigned long flags; |
4955 | ||
4956 | /* Don't bother trying to flush the cache if locked up */ | |
4957 | spin_lock_irqsave(&h->lock, flags); | |
4958 | if (unlikely(h->lockup_detected)) { | |
4959 | spin_unlock_irqrestore(&h->lock, flags); | |
4960 | return; | |
4961 | } | |
4962 | spin_unlock_irqrestore(&h->lock, flags); | |
edd16368 SC |
4963 | |
4964 | flush_buf = kzalloc(4, GFP_KERNEL); | |
4965 | if (!flush_buf) | |
4966 | return; | |
4967 | ||
4968 | c = cmd_special_alloc(h); | |
4969 | if (!c) { | |
4970 | dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); | |
4971 | goto out_of_memory; | |
4972 | } | |
a2dac136 SC |
4973 | if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0, |
4974 | RAID_CTLR_LUNID, TYPE_CMD)) { | |
4975 | goto out; | |
4976 | } | |
edd16368 SC |
4977 | hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_TODEVICE); |
4978 | if (c->err_info->CommandStatus != 0) | |
a2dac136 | 4979 | out: |
edd16368 SC |
4980 | dev_warn(&h->pdev->dev, |
4981 | "error flushing cache on controller\n"); | |
4982 | cmd_special_free(h, c); | |
4983 | out_of_memory: | |
4984 | kfree(flush_buf); | |
4985 | } | |
4986 | ||
4987 | static void hpsa_shutdown(struct pci_dev *pdev) | |
4988 | { | |
4989 | struct ctlr_info *h; | |
4990 | ||
4991 | h = pci_get_drvdata(pdev); | |
4992 | /* Turn board interrupts off and send the flush cache command | |
4993 | * sendcmd will turn off interrupt, and send the flush... | |
4994 | * To write all data in the battery backed cache to disks | |
4995 | */ | |
4996 | hpsa_flush_cache(h); | |
4997 | h->access.set_intr_mask(h, HPSA_INTR_OFF); | |
0097f0f4 | 4998 | hpsa_free_irqs_and_disable_msix(h); |
edd16368 SC |
4999 | } |
5000 | ||
6f039790 | 5001 | static void hpsa_free_device_info(struct ctlr_info *h) |
55e14e76 SC |
5002 | { |
5003 | int i; | |
5004 | ||
5005 | for (i = 0; i < h->ndevices; i++) | |
5006 | kfree(h->dev[i]); | |
5007 | } | |
5008 | ||
6f039790 | 5009 | static void hpsa_remove_one(struct pci_dev *pdev) |
edd16368 SC |
5010 | { |
5011 | struct ctlr_info *h; | |
8a98db73 | 5012 | unsigned long flags; |
edd16368 SC |
5013 | |
5014 | if (pci_get_drvdata(pdev) == NULL) { | |
a0c12413 | 5015 | dev_err(&pdev->dev, "unable to remove device\n"); |
edd16368 SC |
5016 | return; |
5017 | } | |
5018 | h = pci_get_drvdata(pdev); | |
8a98db73 SC |
5019 | |
5020 | /* Get rid of any controller monitoring work items */ | |
5021 | spin_lock_irqsave(&h->lock, flags); | |
5022 | h->remove_in_progress = 1; | |
5023 | cancel_delayed_work(&h->monitor_ctlr_work); | |
5024 | spin_unlock_irqrestore(&h->lock, flags); | |
5025 | ||
edd16368 SC |
5026 | hpsa_unregister_scsi(h); /* unhook from SCSI subsystem */ |
5027 | hpsa_shutdown(pdev); | |
5028 | iounmap(h->vaddr); | |
204892e9 SC |
5029 | iounmap(h->transtable); |
5030 | iounmap(h->cfgtable); | |
55e14e76 | 5031 | hpsa_free_device_info(h); |
33a2ffce | 5032 | hpsa_free_sg_chain_blocks(h); |
edd16368 SC |
5033 | pci_free_consistent(h->pdev, |
5034 | h->nr_cmds * sizeof(struct CommandList), | |
5035 | h->cmd_pool, h->cmd_pool_dhandle); | |
5036 | pci_free_consistent(h->pdev, | |
5037 | h->nr_cmds * sizeof(struct ErrorInfo), | |
5038 | h->errinfo_pool, h->errinfo_pool_dhandle); | |
303932fd DB |
5039 | pci_free_consistent(h->pdev, h->reply_pool_size, |
5040 | h->reply_pool, h->reply_pool_dhandle); | |
edd16368 | 5041 | kfree(h->cmd_pool_bits); |
303932fd | 5042 | kfree(h->blockFetchTable); |
339b2b14 | 5043 | kfree(h->hba_inquiry_data); |
f0bd0b68 | 5044 | pci_disable_device(pdev); |
edd16368 | 5045 | pci_release_regions(pdev); |
edd16368 SC |
5046 | kfree(h); |
5047 | } | |
5048 | ||
5049 | static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev, | |
5050 | __attribute__((unused)) pm_message_t state) | |
5051 | { | |
5052 | return -ENOSYS; | |
5053 | } | |
5054 | ||
5055 | static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev) | |
5056 | { | |
5057 | return -ENOSYS; | |
5058 | } | |
5059 | ||
5060 | static struct pci_driver hpsa_pci_driver = { | |
f79cfec6 | 5061 | .name = HPSA, |
edd16368 | 5062 | .probe = hpsa_init_one, |
6f039790 | 5063 | .remove = hpsa_remove_one, |
edd16368 SC |
5064 | .id_table = hpsa_pci_device_id, /* id_table */ |
5065 | .shutdown = hpsa_shutdown, | |
5066 | .suspend = hpsa_suspend, | |
5067 | .resume = hpsa_resume, | |
5068 | }; | |
5069 | ||
303932fd DB |
5070 | /* Fill in bucket_map[], given nsgs (the max number of |
5071 | * scatter gather elements supported) and bucket[], | |
5072 | * which is an array of 8 integers. The bucket[] array | |
5073 | * contains 8 different DMA transfer sizes (in 16 | |
5074 | * byte increments) which the controller uses to fetch | |
5075 | * commands. This function fills in bucket_map[], which | |
5076 | * maps a given number of scatter gather elements to one of | |
5077 | * the 8 DMA transfer sizes. The point of it is to allow the | |
5078 | * controller to only do as much DMA as needed to fetch the | |
5079 | * command, with the DMA transfer size encoded in the lower | |
5080 | * bits of the command address. | |
5081 | */ | |
5082 | static void calc_bucket_map(int bucket[], int num_buckets, | |
5083 | int nsgs, int *bucket_map) | |
5084 | { | |
5085 | int i, j, b, size; | |
5086 | ||
5087 | /* even a command with 0 SGs requires 4 blocks */ | |
5088 | #define MINIMUM_TRANSFER_BLOCKS 4 | |
5089 | #define NUM_BUCKETS 8 | |
5090 | /* Note, bucket_map must have nsgs+1 entries. */ | |
5091 | for (i = 0; i <= nsgs; i++) { | |
5092 | /* Compute size of a command with i SG entries */ | |
5093 | size = i + MINIMUM_TRANSFER_BLOCKS; | |
5094 | b = num_buckets; /* Assume the biggest bucket */ | |
5095 | /* Find the bucket that is just big enough */ | |
5096 | for (j = 0; j < 8; j++) { | |
5097 | if (bucket[j] >= size) { | |
5098 | b = j; | |
5099 | break; | |
5100 | } | |
5101 | } | |
5102 | /* for a command with i SG entries, use bucket b. */ | |
5103 | bucket_map[i] = b; | |
5104 | } | |
5105 | } | |
5106 | ||
6f039790 | 5107 | static void hpsa_enter_performant_mode(struct ctlr_info *h, u32 use_short_tags) |
303932fd | 5108 | { |
6c311b57 SC |
5109 | int i; |
5110 | unsigned long register_value; | |
def342bd SC |
5111 | |
5112 | /* This is a bit complicated. There are 8 registers on | |
5113 | * the controller which we write to to tell it 8 different | |
5114 | * sizes of commands which there may be. It's a way of | |
5115 | * reducing the DMA done to fetch each command. Encoded into | |
5116 | * each command's tag are 3 bits which communicate to the controller | |
5117 | * which of the eight sizes that command fits within. The size of | |
5118 | * each command depends on how many scatter gather entries there are. | |
5119 | * Each SG entry requires 16 bytes. The eight registers are programmed | |
5120 | * with the number of 16-byte blocks a command of that size requires. | |
5121 | * The smallest command possible requires 5 such 16 byte blocks. | |
d66ae08b | 5122 | * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte |
def342bd SC |
5123 | * blocks. Note, this only extends to the SG entries contained |
5124 | * within the command block, and does not extend to chained blocks | |
5125 | * of SG elements. bft[] contains the eight values we write to | |
5126 | * the registers. They are not evenly distributed, but have more | |
5127 | * sizes for small commands, and fewer sizes for larger commands. | |
5128 | */ | |
d66ae08b SC |
5129 | int bft[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD + 4}; |
5130 | BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD + 4); | |
303932fd DB |
5131 | /* 5 = 1 s/g entry or 4k |
5132 | * 6 = 2 s/g entry or 8k | |
5133 | * 8 = 4 s/g entry or 16k | |
5134 | * 10 = 6 s/g entry or 24k | |
5135 | */ | |
303932fd | 5136 | |
303932fd DB |
5137 | /* Controller spec: zero out this buffer. */ |
5138 | memset(h->reply_pool, 0, h->reply_pool_size); | |
303932fd | 5139 | |
d66ae08b SC |
5140 | bft[7] = SG_ENTRIES_IN_CMD + 4; |
5141 | calc_bucket_map(bft, ARRAY_SIZE(bft), | |
5142 | SG_ENTRIES_IN_CMD, h->blockFetchTable); | |
303932fd DB |
5143 | for (i = 0; i < 8; i++) |
5144 | writel(bft[i], &h->transtable->BlockFetch[i]); | |
5145 | ||
5146 | /* size of controller ring buffer */ | |
5147 | writel(h->max_commands, &h->transtable->RepQSize); | |
254f796b | 5148 | writel(h->nreply_queues, &h->transtable->RepQCount); |
303932fd DB |
5149 | writel(0, &h->transtable->RepQCtrAddrLow32); |
5150 | writel(0, &h->transtable->RepQCtrAddrHigh32); | |
254f796b MG |
5151 | |
5152 | for (i = 0; i < h->nreply_queues; i++) { | |
5153 | writel(0, &h->transtable->RepQAddr[i].upper); | |
5154 | writel(h->reply_pool_dhandle + | |
5155 | (h->max_commands * sizeof(u64) * i), | |
5156 | &h->transtable->RepQAddr[i].lower); | |
5157 | } | |
5158 | ||
5159 | writel(CFGTBL_Trans_Performant | use_short_tags | | |
5160 | CFGTBL_Trans_enable_directed_msix, | |
303932fd DB |
5161 | &(h->cfgtable->HostWrite.TransportRequest)); |
5162 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); | |
3f4336f3 | 5163 | hpsa_wait_for_mode_change_ack(h); |
303932fd DB |
5164 | register_value = readl(&(h->cfgtable->TransportActive)); |
5165 | if (!(register_value & CFGTBL_Trans_Performant)) { | |
5166 | dev_warn(&h->pdev->dev, "unable to get board into" | |
5167 | " performant mode\n"); | |
5168 | return; | |
5169 | } | |
960a30e7 SC |
5170 | /* Change the access methods to the performant access methods */ |
5171 | h->access = SA5_performant_access; | |
5172 | h->transMethod = CFGTBL_Trans_Performant; | |
6c311b57 SC |
5173 | } |
5174 | ||
6f039790 | 5175 | static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) |
6c311b57 SC |
5176 | { |
5177 | u32 trans_support; | |
254f796b | 5178 | int i; |
6c311b57 | 5179 | |
02ec19c8 SC |
5180 | if (hpsa_simple_mode) |
5181 | return; | |
5182 | ||
6c311b57 SC |
5183 | trans_support = readl(&(h->cfgtable->TransportSupport)); |
5184 | if (!(trans_support & PERFORMANT_MODE)) | |
5185 | return; | |
5186 | ||
eee0f03a | 5187 | h->nreply_queues = h->msix_vector > 0 ? h->msix_vector : 1; |
cba3d38b | 5188 | hpsa_get_max_perf_mode_cmds(h); |
6c311b57 | 5189 | /* Performant mode ring buffer and supporting data structures */ |
254f796b | 5190 | h->reply_pool_size = h->max_commands * sizeof(u64) * h->nreply_queues; |
6c311b57 SC |
5191 | h->reply_pool = pci_alloc_consistent(h->pdev, h->reply_pool_size, |
5192 | &(h->reply_pool_dhandle)); | |
5193 | ||
254f796b MG |
5194 | for (i = 0; i < h->nreply_queues; i++) { |
5195 | h->reply_queue[i].head = &h->reply_pool[h->max_commands * i]; | |
5196 | h->reply_queue[i].size = h->max_commands; | |
5197 | h->reply_queue[i].wraparound = 1; /* spec: init to 1 */ | |
5198 | h->reply_queue[i].current_entry = 0; | |
5199 | } | |
5200 | ||
6c311b57 | 5201 | /* Need a block fetch table for performant mode */ |
d66ae08b | 5202 | h->blockFetchTable = kmalloc(((SG_ENTRIES_IN_CMD + 1) * |
6c311b57 SC |
5203 | sizeof(u32)), GFP_KERNEL); |
5204 | ||
5205 | if ((h->reply_pool == NULL) | |
5206 | || (h->blockFetchTable == NULL)) | |
5207 | goto clean_up; | |
5208 | ||
960a30e7 SC |
5209 | hpsa_enter_performant_mode(h, |
5210 | trans_support & CFGTBL_Trans_use_short_tags); | |
303932fd DB |
5211 | |
5212 | return; | |
5213 | ||
5214 | clean_up: | |
5215 | if (h->reply_pool) | |
5216 | pci_free_consistent(h->pdev, h->reply_pool_size, | |
5217 | h->reply_pool, h->reply_pool_dhandle); | |
5218 | kfree(h->blockFetchTable); | |
5219 | } | |
5220 | ||
edd16368 SC |
5221 | /* |
5222 | * This is it. Register the PCI driver information for the cards we control | |
5223 | * the OS will call our registered routines when it finds one of our cards. | |
5224 | */ | |
5225 | static int __init hpsa_init(void) | |
5226 | { | |
31468401 | 5227 | return pci_register_driver(&hpsa_pci_driver); |
edd16368 SC |
5228 | } |
5229 | ||
5230 | static void __exit hpsa_cleanup(void) | |
5231 | { | |
5232 | pci_unregister_driver(&hpsa_pci_driver); | |
edd16368 SC |
5233 | } |
5234 | ||
5235 | module_init(hpsa_init); | |
5236 | module_exit(hpsa_cleanup); |