2 * Disk Array driver for HP Smart Array SAS controllers
3 * Copyright 2014-2015 PMC-Sierra, Inc.
4 * Copyright 2000,2009-2015 Hewlett-Packard Development Company, L.P.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
13 * NON INFRINGEMENT. See the GNU General Public License for more details.
15 * Questions/Comments/Bugfixes to storagedev@pmcs.com
19 #include <linux/module.h>
20 #include <linux/interrupt.h>
21 #include <linux/types.h>
22 #include <linux/pci.h>
23 #include <linux/pci-aspm.h>
24 #include <linux/kernel.h>
25 #include <linux/slab.h>
26 #include <linux/delay.h>
28 #include <linux/timer.h>
29 #include <linux/init.h>
30 #include <linux/spinlock.h>
31 #include <linux/compat.h>
32 #include <linux/blktrace_api.h>
33 #include <linux/uaccess.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/completion.h>
37 #include <linux/moduleparam.h>
38 #include <scsi/scsi.h>
39 #include <scsi/scsi_cmnd.h>
40 #include <scsi/scsi_device.h>
41 #include <scsi/scsi_host.h>
42 #include <scsi/scsi_tcq.h>
43 #include <scsi/scsi_eh.h>
44 #include <scsi/scsi_transport_sas.h>
45 #include <scsi/scsi_dbg.h>
46 #include <linux/cciss_ioctl.h>
47 #include <linux/string.h>
48 #include <linux/bitmap.h>
49 #include <linux/atomic.h>
50 #include <linux/jiffies.h>
51 #include <linux/percpu-defs.h>
52 #include <linux/percpu.h>
53 #include <asm/unaligned.h>
54 #include <asm/div64.h>
59 * HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.'
60 * with an optional trailing '-' followed by a byte value (0-255).
62 #define HPSA_DRIVER_VERSION "3.4.14-0"
63 #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
66 /* How long to wait for CISS doorbell communication */
67 #define CLEAR_EVENT_WAIT_INTERVAL 20 /* ms for each msleep() call */
68 #define MODE_CHANGE_WAIT_INTERVAL 10 /* ms for each msleep() call */
69 #define MAX_CLEAR_EVENT_WAIT 30000 /* times 20 ms = 600 s */
70 #define MAX_MODE_CHANGE_WAIT 2000 /* times 10 ms = 20 s */
71 #define MAX_IOCTL_CONFIG_WAIT 1000
73 /*define how many times we will try a command because of bus resets */
74 #define MAX_CMD_RETRIES 3
76 /* Embedded module documentation macros - see modules.h */
77 MODULE_AUTHOR("Hewlett-Packard Company");
78 MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
80 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
81 MODULE_VERSION(HPSA_DRIVER_VERSION);
82 MODULE_LICENSE("GPL");
84 static int hpsa_allow_any;
85 module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR);
86 MODULE_PARM_DESC(hpsa_allow_any,
87 "Allow hpsa driver to access unknown HP Smart Array hardware");
88 static int hpsa_simple_mode;
89 module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR);
90 MODULE_PARM_DESC(hpsa_simple_mode,
91 "Use 'simple mode' rather than 'performant mode'");
93 /* define the PCI info for the cards we can control */
94 static const struct pci_device_id hpsa_pci_device_id[] = {
95 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241},
96 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243},
97 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245},
98 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247},
99 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249},
100 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A},
101 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B},
102 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233},
103 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3350},
104 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3351},
105 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3352},
106 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3353},
107 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3354},
108 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3355},
109 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3356},
110 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1921},
111 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1922},
112 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1923},
113 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1924},
114 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1926},
115 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1928},
116 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1929},
117 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BD},
118 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BE},
119 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BF},
120 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C0},
121 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C1},
122 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C2},
123 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C3},
124 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C4},
125 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C5},
126 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C6},
127 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C7},
128 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C8},
129 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C9},
130 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CA},
131 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CB},
132 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CC},
133 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CD},
134 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CE},
135 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0580},
136 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0581},
137 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0582},
138 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0583},
139 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0584},
140 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0585},
141 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0076},
142 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0087},
143 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x007D},
144 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0088},
145 {PCI_VENDOR_ID_HP, 0x333f, 0x103c, 0x333f},
146 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
147 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
151 MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id);
153 /* board_id = Subsystem Device ID & Vendor ID
154 * product = Marketing Name for the board
155 * access = Address of the struct of function pointers
157 static struct board_type products[] = {
158 {0x3241103C, "Smart Array P212", &SA5_access},
159 {0x3243103C, "Smart Array P410", &SA5_access},
160 {0x3245103C, "Smart Array P410i", &SA5_access},
161 {0x3247103C, "Smart Array P411", &SA5_access},
162 {0x3249103C, "Smart Array P812", &SA5_access},
163 {0x324A103C, "Smart Array P712m", &SA5_access},
164 {0x324B103C, "Smart Array P711m", &SA5_access},
165 {0x3233103C, "HP StorageWorks 1210m", &SA5_access}, /* alias of 333f */
166 {0x3350103C, "Smart Array P222", &SA5_access},
167 {0x3351103C, "Smart Array P420", &SA5_access},
168 {0x3352103C, "Smart Array P421", &SA5_access},
169 {0x3353103C, "Smart Array P822", &SA5_access},
170 {0x3354103C, "Smart Array P420i", &SA5_access},
171 {0x3355103C, "Smart Array P220i", &SA5_access},
172 {0x3356103C, "Smart Array P721m", &SA5_access},
173 {0x1921103C, "Smart Array P830i", &SA5_access},
174 {0x1922103C, "Smart Array P430", &SA5_access},
175 {0x1923103C, "Smart Array P431", &SA5_access},
176 {0x1924103C, "Smart Array P830", &SA5_access},
177 {0x1926103C, "Smart Array P731m", &SA5_access},
178 {0x1928103C, "Smart Array P230i", &SA5_access},
179 {0x1929103C, "Smart Array P530", &SA5_access},
180 {0x21BD103C, "Smart Array P244br", &SA5_access},
181 {0x21BE103C, "Smart Array P741m", &SA5_access},
182 {0x21BF103C, "Smart HBA H240ar", &SA5_access},
183 {0x21C0103C, "Smart Array P440ar", &SA5_access},
184 {0x21C1103C, "Smart Array P840ar", &SA5_access},
185 {0x21C2103C, "Smart Array P440", &SA5_access},
186 {0x21C3103C, "Smart Array P441", &SA5_access},
187 {0x21C4103C, "Smart Array", &SA5_access},
188 {0x21C5103C, "Smart Array P841", &SA5_access},
189 {0x21C6103C, "Smart HBA H244br", &SA5_access},
190 {0x21C7103C, "Smart HBA H240", &SA5_access},
191 {0x21C8103C, "Smart HBA H241", &SA5_access},
192 {0x21C9103C, "Smart Array", &SA5_access},
193 {0x21CA103C, "Smart Array P246br", &SA5_access},
194 {0x21CB103C, "Smart Array P840", &SA5_access},
195 {0x21CC103C, "Smart Array", &SA5_access},
196 {0x21CD103C, "Smart Array", &SA5_access},
197 {0x21CE103C, "Smart HBA", &SA5_access},
198 {0x05809005, "SmartHBA-SA", &SA5_access},
199 {0x05819005, "SmartHBA-SA 8i", &SA5_access},
200 {0x05829005, "SmartHBA-SA 8i8e", &SA5_access},
201 {0x05839005, "SmartHBA-SA 8e", &SA5_access},
202 {0x05849005, "SmartHBA-SA 16i", &SA5_access},
203 {0x05859005, "SmartHBA-SA 4i4e", &SA5_access},
204 {0x00761590, "HP Storage P1224 Array Controller", &SA5_access},
205 {0x00871590, "HP Storage P1224e Array Controller", &SA5_access},
206 {0x007D1590, "HP Storage P1228 Array Controller", &SA5_access},
207 {0x00881590, "HP Storage P1228e Array Controller", &SA5_access},
208 {0x333f103c, "HP StorageWorks 1210m Array Controller", &SA5_access},
209 {0xFFFF103C, "Unknown Smart Array", &SA5_access},
212 static struct scsi_transport_template *hpsa_sas_transport_template;
213 static int hpsa_add_sas_host(struct ctlr_info *h);
214 static void hpsa_delete_sas_host(struct ctlr_info *h);
215 static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node,
216 struct hpsa_scsi_dev_t *device);
217 static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device);
218 static struct hpsa_scsi_dev_t
219 *hpsa_find_device_by_sas_rphy(struct ctlr_info *h,
220 struct sas_rphy *rphy);
222 #define SCSI_CMD_BUSY ((struct scsi_cmnd *)&hpsa_cmd_busy)
223 static const struct scsi_cmnd hpsa_cmd_busy;
224 #define SCSI_CMD_IDLE ((struct scsi_cmnd *)&hpsa_cmd_idle)
225 static const struct scsi_cmnd hpsa_cmd_idle;
226 static int number_of_controllers;
228 static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id);
229 static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id);
230 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
233 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd,
237 static void cmd_free(struct ctlr_info *h, struct CommandList *c);
238 static struct CommandList *cmd_alloc(struct ctlr_info *h);
239 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c);
240 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
241 struct scsi_cmnd *scmd);
242 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
243 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
245 static void hpsa_free_cmd_pool(struct ctlr_info *h);
246 #define VPD_PAGE (1 << 8)
247 #define HPSA_SIMPLE_ERROR_BITS 0x03
249 static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
250 static void hpsa_scan_start(struct Scsi_Host *);
251 static int hpsa_scan_finished(struct Scsi_Host *sh,
252 unsigned long elapsed_time);
253 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth);
255 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd);
256 static int hpsa_eh_abort_handler(struct scsi_cmnd *scsicmd);
257 static int hpsa_slave_alloc(struct scsi_device *sdev);
258 static int hpsa_slave_configure(struct scsi_device *sdev);
259 static void hpsa_slave_destroy(struct scsi_device *sdev);
261 static void hpsa_update_scsi_devices(struct ctlr_info *h);
262 static int check_for_unit_attention(struct ctlr_info *h,
263 struct CommandList *c);
264 static void check_ioctl_unit_attention(struct ctlr_info *h,
265 struct CommandList *c);
266 /* performant mode helper functions */
267 static void calc_bucket_map(int *bucket, int num_buckets,
268 int nsgs, int min_blocks, u32 *bucket_map);
269 static void hpsa_free_performant_mode(struct ctlr_info *h);
270 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h);
271 static inline u32 next_command(struct ctlr_info *h, u8 q);
272 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
273 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
275 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
276 unsigned long *memory_bar);
277 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id);
278 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
280 static inline void finish_cmd(struct CommandList *c);
281 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h);
282 #define BOARD_NOT_READY 0
283 #define BOARD_READY 1
284 static void hpsa_drain_accel_commands(struct ctlr_info *h);
285 static void hpsa_flush_cache(struct ctlr_info *h);
286 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
287 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
288 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk);
289 static void hpsa_command_resubmit_worker(struct work_struct *work);
290 static u32 lockup_detected(struct ctlr_info *h);
291 static int detect_controller_lockup(struct ctlr_info *h);
292 static void hpsa_disable_rld_caching(struct ctlr_info *h);
293 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
294 struct ReportExtendedLUNdata *buf, int bufsize);
295 static int hpsa_luns_changed(struct ctlr_info *h);
297 static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
299 unsigned long *priv = shost_priv(sdev->host);
300 return (struct ctlr_info *) *priv;
303 static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh)
305 unsigned long *priv = shost_priv(sh);
306 return (struct ctlr_info *) *priv;
309 static inline bool hpsa_is_cmd_idle(struct CommandList *c)
311 return c->scsi_cmd == SCSI_CMD_IDLE;
314 static inline bool hpsa_is_pending_event(struct CommandList *c)
316 return c->abort_pending || c->reset_pending;
319 /* extract sense key, asc, and ascq from sense data. -1 means invalid. */
320 static void decode_sense_data(const u8 *sense_data, int sense_data_len,
321 u8 *sense_key, u8 *asc, u8 *ascq)
323 struct scsi_sense_hdr sshdr;
330 if (sense_data_len < 1)
333 rc = scsi_normalize_sense(sense_data, sense_data_len, &sshdr);
335 *sense_key = sshdr.sense_key;
341 static int check_for_unit_attention(struct ctlr_info *h,
342 struct CommandList *c)
344 u8 sense_key, asc, ascq;
347 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
348 sense_len = sizeof(c->err_info->SenseInfo);
350 sense_len = c->err_info->SenseLen;
352 decode_sense_data(c->err_info->SenseInfo, sense_len,
353 &sense_key, &asc, &ascq);
354 if (sense_key != UNIT_ATTENTION || asc == 0xff)
359 dev_warn(&h->pdev->dev,
360 "%s: a state change detected, command retried\n",
364 dev_warn(&h->pdev->dev,
365 "%s: LUN failure detected\n", h->devname);
367 case REPORT_LUNS_CHANGED:
368 dev_warn(&h->pdev->dev,
369 "%s: report LUN data changed\n", h->devname);
371 * Note: this REPORT_LUNS_CHANGED condition only occurs on the external
372 * target (array) devices.
376 dev_warn(&h->pdev->dev,
377 "%s: a power on or device reset detected\n",
380 case UNIT_ATTENTION_CLEARED:
381 dev_warn(&h->pdev->dev,
382 "%s: unit attention cleared by another initiator\n",
386 dev_warn(&h->pdev->dev,
387 "%s: unknown unit attention detected\n",
394 static int check_for_busy(struct ctlr_info *h, struct CommandList *c)
396 if (c->err_info->CommandStatus != CMD_TARGET_STATUS ||
397 (c->err_info->ScsiStatus != SAM_STAT_BUSY &&
398 c->err_info->ScsiStatus != SAM_STAT_TASK_SET_FULL))
400 dev_warn(&h->pdev->dev, HPSA "device busy");
404 static u32 lockup_detected(struct ctlr_info *h);
405 static ssize_t host_show_lockup_detected(struct device *dev,
406 struct device_attribute *attr, char *buf)
410 struct Scsi_Host *shost = class_to_shost(dev);
412 h = shost_to_hba(shost);
413 ld = lockup_detected(h);
415 return sprintf(buf, "ld=%d\n", ld);
418 static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev,
419 struct device_attribute *attr,
420 const char *buf, size_t count)
424 struct Scsi_Host *shost = class_to_shost(dev);
427 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
429 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
430 strncpy(tmpbuf, buf, len);
432 if (sscanf(tmpbuf, "%d", &status) != 1)
434 h = shost_to_hba(shost);
435 h->acciopath_status = !!status;
436 dev_warn(&h->pdev->dev,
437 "hpsa: HP SSD Smart Path %s via sysfs update.\n",
438 h->acciopath_status ? "enabled" : "disabled");
442 static ssize_t host_store_raid_offload_debug(struct device *dev,
443 struct device_attribute *attr,
444 const char *buf, size_t count)
446 int debug_level, len;
448 struct Scsi_Host *shost = class_to_shost(dev);
451 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
453 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
454 strncpy(tmpbuf, buf, len);
456 if (sscanf(tmpbuf, "%d", &debug_level) != 1)
460 h = shost_to_hba(shost);
461 h->raid_offload_debug = debug_level;
462 dev_warn(&h->pdev->dev, "hpsa: Set raid_offload_debug level = %d\n",
463 h->raid_offload_debug);
467 static ssize_t host_store_rescan(struct device *dev,
468 struct device_attribute *attr,
469 const char *buf, size_t count)
472 struct Scsi_Host *shost = class_to_shost(dev);
473 h = shost_to_hba(shost);
474 hpsa_scan_start(h->scsi_host);
478 static ssize_t host_show_firmware_revision(struct device *dev,
479 struct device_attribute *attr, char *buf)
482 struct Scsi_Host *shost = class_to_shost(dev);
483 unsigned char *fwrev;
485 h = shost_to_hba(shost);
486 if (!h->hba_inquiry_data)
488 fwrev = &h->hba_inquiry_data[32];
489 return snprintf(buf, 20, "%c%c%c%c\n",
490 fwrev[0], fwrev[1], fwrev[2], fwrev[3]);
493 static ssize_t host_show_commands_outstanding(struct device *dev,
494 struct device_attribute *attr, char *buf)
496 struct Scsi_Host *shost = class_to_shost(dev);
497 struct ctlr_info *h = shost_to_hba(shost);
499 return snprintf(buf, 20, "%d\n",
500 atomic_read(&h->commands_outstanding));
503 static ssize_t host_show_transport_mode(struct device *dev,
504 struct device_attribute *attr, char *buf)
507 struct Scsi_Host *shost = class_to_shost(dev);
509 h = shost_to_hba(shost);
510 return snprintf(buf, 20, "%s\n",
511 h->transMethod & CFGTBL_Trans_Performant ?
512 "performant" : "simple");
515 static ssize_t host_show_hp_ssd_smart_path_status(struct device *dev,
516 struct device_attribute *attr, char *buf)
519 struct Scsi_Host *shost = class_to_shost(dev);
521 h = shost_to_hba(shost);
522 return snprintf(buf, 30, "HP SSD Smart Path %s\n",
523 (h->acciopath_status == 1) ? "enabled" : "disabled");
526 /* List of controllers which cannot be hard reset on kexec with reset_devices */
527 static u32 unresettable_controller[] = {
528 0x324a103C, /* Smart Array P712m */
529 0x324b103C, /* Smart Array P711m */
530 0x3223103C, /* Smart Array P800 */
531 0x3234103C, /* Smart Array P400 */
532 0x3235103C, /* Smart Array P400i */
533 0x3211103C, /* Smart Array E200i */
534 0x3212103C, /* Smart Array E200 */
535 0x3213103C, /* Smart Array E200i */
536 0x3214103C, /* Smart Array E200i */
537 0x3215103C, /* Smart Array E200i */
538 0x3237103C, /* Smart Array E500 */
539 0x323D103C, /* Smart Array P700m */
540 0x40800E11, /* Smart Array 5i */
541 0x409C0E11, /* Smart Array 6400 */
542 0x409D0E11, /* Smart Array 6400 EM */
543 0x40700E11, /* Smart Array 5300 */
544 0x40820E11, /* Smart Array 532 */
545 0x40830E11, /* Smart Array 5312 */
546 0x409A0E11, /* Smart Array 641 */
547 0x409B0E11, /* Smart Array 642 */
548 0x40910E11, /* Smart Array 6i */
551 /* List of controllers which cannot even be soft reset */
552 static u32 soft_unresettable_controller[] = {
553 0x40800E11, /* Smart Array 5i */
554 0x40700E11, /* Smart Array 5300 */
555 0x40820E11, /* Smart Array 532 */
556 0x40830E11, /* Smart Array 5312 */
557 0x409A0E11, /* Smart Array 641 */
558 0x409B0E11, /* Smart Array 642 */
559 0x40910E11, /* Smart Array 6i */
560 /* Exclude 640x boards. These are two pci devices in one slot
561 * which share a battery backed cache module. One controls the
562 * cache, the other accesses the cache through the one that controls
563 * it. If we reset the one controlling the cache, the other will
564 * likely not be happy. Just forbid resetting this conjoined mess.
565 * The 640x isn't really supported by hpsa anyway.
567 0x409C0E11, /* Smart Array 6400 */
568 0x409D0E11, /* Smart Array 6400 EM */
571 static u32 needs_abort_tags_swizzled[] = {
572 0x323D103C, /* Smart Array P700m */
573 0x324a103C, /* Smart Array P712m */
574 0x324b103C, /* SmartArray P711m */
577 static int board_id_in_array(u32 a[], int nelems, u32 board_id)
581 for (i = 0; i < nelems; i++)
582 if (a[i] == board_id)
587 static int ctlr_is_hard_resettable(u32 board_id)
589 return !board_id_in_array(unresettable_controller,
590 ARRAY_SIZE(unresettable_controller), board_id);
593 static int ctlr_is_soft_resettable(u32 board_id)
595 return !board_id_in_array(soft_unresettable_controller,
596 ARRAY_SIZE(soft_unresettable_controller), board_id);
599 static int ctlr_is_resettable(u32 board_id)
601 return ctlr_is_hard_resettable(board_id) ||
602 ctlr_is_soft_resettable(board_id);
605 static int ctlr_needs_abort_tags_swizzled(u32 board_id)
607 return board_id_in_array(needs_abort_tags_swizzled,
608 ARRAY_SIZE(needs_abort_tags_swizzled), board_id);
611 static ssize_t host_show_resettable(struct device *dev,
612 struct device_attribute *attr, char *buf)
615 struct Scsi_Host *shost = class_to_shost(dev);
617 h = shost_to_hba(shost);
618 return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id));
621 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[])
623 return (scsi3addr[3] & 0xC0) == 0x40;
626 static const char * const raid_label[] = { "0", "4", "1(+0)", "5", "5+1", "6",
627 "1(+0)ADM", "UNKNOWN", "PHYS DRV"
629 #define HPSA_RAID_0 0
630 #define HPSA_RAID_4 1
631 #define HPSA_RAID_1 2 /* also used for RAID 10 */
632 #define HPSA_RAID_5 3 /* also used for RAID 50 */
633 #define HPSA_RAID_51 4
634 #define HPSA_RAID_6 5 /* also used for RAID 60 */
635 #define HPSA_RAID_ADM 6 /* also used for RAID 1+0 ADM */
636 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 2)
637 #define PHYSICAL_DRIVE (ARRAY_SIZE(raid_label) - 1)
639 static inline bool is_logical_device(struct hpsa_scsi_dev_t *device)
641 return !device->physical_device;
644 static ssize_t raid_level_show(struct device *dev,
645 struct device_attribute *attr, char *buf)
648 unsigned char rlevel;
650 struct scsi_device *sdev;
651 struct hpsa_scsi_dev_t *hdev;
654 sdev = to_scsi_device(dev);
655 h = sdev_to_hba(sdev);
656 spin_lock_irqsave(&h->lock, flags);
657 hdev = sdev->hostdata;
659 spin_unlock_irqrestore(&h->lock, flags);
663 /* Is this even a logical drive? */
664 if (!is_logical_device(hdev)) {
665 spin_unlock_irqrestore(&h->lock, flags);
666 l = snprintf(buf, PAGE_SIZE, "N/A\n");
670 rlevel = hdev->raid_level;
671 spin_unlock_irqrestore(&h->lock, flags);
672 if (rlevel > RAID_UNKNOWN)
673 rlevel = RAID_UNKNOWN;
674 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]);
678 static ssize_t lunid_show(struct device *dev,
679 struct device_attribute *attr, char *buf)
682 struct scsi_device *sdev;
683 struct hpsa_scsi_dev_t *hdev;
685 unsigned char lunid[8];
687 sdev = to_scsi_device(dev);
688 h = sdev_to_hba(sdev);
689 spin_lock_irqsave(&h->lock, flags);
690 hdev = sdev->hostdata;
692 spin_unlock_irqrestore(&h->lock, flags);
695 memcpy(lunid, hdev->scsi3addr, sizeof(lunid));
696 spin_unlock_irqrestore(&h->lock, flags);
697 return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
698 lunid[0], lunid[1], lunid[2], lunid[3],
699 lunid[4], lunid[5], lunid[6], lunid[7]);
702 static ssize_t unique_id_show(struct device *dev,
703 struct device_attribute *attr, char *buf)
706 struct scsi_device *sdev;
707 struct hpsa_scsi_dev_t *hdev;
709 unsigned char sn[16];
711 sdev = to_scsi_device(dev);
712 h = sdev_to_hba(sdev);
713 spin_lock_irqsave(&h->lock, flags);
714 hdev = sdev->hostdata;
716 spin_unlock_irqrestore(&h->lock, flags);
719 memcpy(sn, hdev->device_id, sizeof(sn));
720 spin_unlock_irqrestore(&h->lock, flags);
721 return snprintf(buf, 16 * 2 + 2,
722 "%02X%02X%02X%02X%02X%02X%02X%02X"
723 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
724 sn[0], sn[1], sn[2], sn[3],
725 sn[4], sn[5], sn[6], sn[7],
726 sn[8], sn[9], sn[10], sn[11],
727 sn[12], sn[13], sn[14], sn[15]);
730 static ssize_t host_show_hp_ssd_smart_path_enabled(struct device *dev,
731 struct device_attribute *attr, char *buf)
734 struct scsi_device *sdev;
735 struct hpsa_scsi_dev_t *hdev;
739 sdev = to_scsi_device(dev);
740 h = sdev_to_hba(sdev);
741 spin_lock_irqsave(&h->lock, flags);
742 hdev = sdev->hostdata;
744 spin_unlock_irqrestore(&h->lock, flags);
747 offload_enabled = hdev->offload_enabled;
748 spin_unlock_irqrestore(&h->lock, flags);
749 return snprintf(buf, 20, "%d\n", offload_enabled);
754 static ssize_t path_info_show(struct device *dev,
755 struct device_attribute *attr, char *buf)
758 struct scsi_device *sdev;
759 struct hpsa_scsi_dev_t *hdev;
765 u8 path_map_index = 0;
767 unsigned char phys_connector[2];
769 sdev = to_scsi_device(dev);
770 h = sdev_to_hba(sdev);
771 spin_lock_irqsave(&h->devlock, flags);
772 hdev = sdev->hostdata;
774 spin_unlock_irqrestore(&h->devlock, flags);
779 for (i = 0; i < MAX_PATHS; i++) {
780 path_map_index = 1<<i;
781 if (i == hdev->active_path_index)
783 else if (hdev->path_map & path_map_index)
788 output_len += scnprintf(buf + output_len,
789 PAGE_SIZE - output_len,
790 "[%d:%d:%d:%d] %20.20s ",
791 h->scsi_host->host_no,
792 hdev->bus, hdev->target, hdev->lun,
793 scsi_device_type(hdev->devtype));
795 if (hdev->external ||
796 hdev->devtype == TYPE_RAID ||
797 is_logical_device(hdev)) {
798 output_len += snprintf(buf + output_len,
799 PAGE_SIZE - output_len,
805 memcpy(&phys_connector, &hdev->phys_connector[i],
806 sizeof(phys_connector));
807 if (phys_connector[0] < '0')
808 phys_connector[0] = '0';
809 if (phys_connector[1] < '0')
810 phys_connector[1] = '0';
811 if (hdev->phys_connector[i] > 0)
812 output_len += snprintf(buf + output_len,
813 PAGE_SIZE - output_len,
816 if (hdev->devtype == TYPE_DISK && hdev->expose_device) {
817 if (box == 0 || box == 0xFF) {
818 output_len += snprintf(buf + output_len,
819 PAGE_SIZE - output_len,
823 output_len += snprintf(buf + output_len,
824 PAGE_SIZE - output_len,
825 "BOX: %hhu BAY: %hhu %s\n",
828 } else if (box != 0 && box != 0xFF) {
829 output_len += snprintf(buf + output_len,
830 PAGE_SIZE - output_len, "BOX: %hhu %s\n",
833 output_len += snprintf(buf + output_len,
834 PAGE_SIZE - output_len, "%s\n", active);
837 spin_unlock_irqrestore(&h->devlock, flags);
841 static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
842 static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
843 static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
844 static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
845 static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO,
846 host_show_hp_ssd_smart_path_enabled, NULL);
847 static DEVICE_ATTR(path_info, S_IRUGO, path_info_show, NULL);
848 static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH,
849 host_show_hp_ssd_smart_path_status,
850 host_store_hp_ssd_smart_path_status);
851 static DEVICE_ATTR(raid_offload_debug, S_IWUSR, NULL,
852 host_store_raid_offload_debug);
853 static DEVICE_ATTR(firmware_revision, S_IRUGO,
854 host_show_firmware_revision, NULL);
855 static DEVICE_ATTR(commands_outstanding, S_IRUGO,
856 host_show_commands_outstanding, NULL);
857 static DEVICE_ATTR(transport_mode, S_IRUGO,
858 host_show_transport_mode, NULL);
859 static DEVICE_ATTR(resettable, S_IRUGO,
860 host_show_resettable, NULL);
861 static DEVICE_ATTR(lockup_detected, S_IRUGO,
862 host_show_lockup_detected, NULL);
864 static struct device_attribute *hpsa_sdev_attrs[] = {
865 &dev_attr_raid_level,
868 &dev_attr_hp_ssd_smart_path_enabled,
873 static struct device_attribute *hpsa_shost_attrs[] = {
875 &dev_attr_firmware_revision,
876 &dev_attr_commands_outstanding,
877 &dev_attr_transport_mode,
878 &dev_attr_resettable,
879 &dev_attr_hp_ssd_smart_path_status,
880 &dev_attr_raid_offload_debug,
881 &dev_attr_lockup_detected,
885 #define HPSA_NRESERVED_CMDS (HPSA_CMDS_RESERVED_FOR_ABORTS + \
886 HPSA_CMDS_RESERVED_FOR_DRIVER + HPSA_MAX_CONCURRENT_PASSTHRUS)
888 static struct scsi_host_template hpsa_driver_template = {
889 .module = THIS_MODULE,
892 .queuecommand = hpsa_scsi_queue_command,
893 .scan_start = hpsa_scan_start,
894 .scan_finished = hpsa_scan_finished,
895 .change_queue_depth = hpsa_change_queue_depth,
897 .use_clustering = ENABLE_CLUSTERING,
898 .eh_abort_handler = hpsa_eh_abort_handler,
899 .eh_device_reset_handler = hpsa_eh_device_reset_handler,
901 .slave_alloc = hpsa_slave_alloc,
902 .slave_configure = hpsa_slave_configure,
903 .slave_destroy = hpsa_slave_destroy,
905 .compat_ioctl = hpsa_compat_ioctl,
907 .sdev_attrs = hpsa_sdev_attrs,
908 .shost_attrs = hpsa_shost_attrs,
913 static inline u32 next_command(struct ctlr_info *h, u8 q)
916 struct reply_queue_buffer *rq = &h->reply_queue[q];
918 if (h->transMethod & CFGTBL_Trans_io_accel1)
919 return h->access.command_completed(h, q);
921 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
922 return h->access.command_completed(h, q);
924 if ((rq->head[rq->current_entry] & 1) == rq->wraparound) {
925 a = rq->head[rq->current_entry];
927 atomic_dec(&h->commands_outstanding);
931 /* Check for wraparound */
932 if (rq->current_entry == h->max_commands) {
933 rq->current_entry = 0;
940 * There are some special bits in the bus address of the
941 * command that we have to set for the controller to know
942 * how to process the command:
944 * Normal performant mode:
945 * bit 0: 1 means performant mode, 0 means simple mode.
946 * bits 1-3 = block fetch table entry
947 * bits 4-6 = command type (== 0)
950 * bit 0 = "performant mode" bit.
951 * bits 1-3 = block fetch table entry
952 * bits 4-6 = command type (== 110)
953 * (command type is needed because ioaccel1 mode
954 * commands are submitted through the same register as normal
955 * mode commands, so this is how the controller knows whether
956 * the command is normal mode or ioaccel1 mode.)
959 * bit 0 = "performant mode" bit.
960 * bits 1-4 = block fetch table entry (note extra bit)
961 * bits 4-6 = not needed, because ioaccel2 mode has
962 * a separate special register for submitting commands.
966 * set_performant_mode: Modify the tag for cciss performant
967 * set bit 0 for pull model, bits 3-1 for block fetch
970 #define DEFAULT_REPLY_QUEUE (-1)
971 static void set_performant_mode(struct ctlr_info *h, struct CommandList *c,
974 if (likely(h->transMethod & CFGTBL_Trans_Performant)) {
975 c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1);
976 if (unlikely(!h->msix_vector))
978 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
979 c->Header.ReplyQueue =
980 raw_smp_processor_id() % h->nreply_queues;
982 c->Header.ReplyQueue = reply_queue % h->nreply_queues;
986 static void set_ioaccel1_performant_mode(struct ctlr_info *h,
987 struct CommandList *c,
990 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
993 * Tell the controller to post the reply to the queue for this
994 * processor. This seems to give the best I/O throughput.
996 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
997 cp->ReplyQueue = smp_processor_id() % h->nreply_queues;
999 cp->ReplyQueue = reply_queue % h->nreply_queues;
1001 * Set the bits in the address sent down to include:
1002 * - performant mode bit (bit 0)
1003 * - pull count (bits 1-3)
1004 * - command type (bits 4-6)
1006 c->busaddr |= 1 | (h->ioaccel1_blockFetchTable[c->Header.SGList] << 1) |
1007 IOACCEL1_BUSADDR_CMDTYPE;
1010 static void set_ioaccel2_tmf_performant_mode(struct ctlr_info *h,
1011 struct CommandList *c,
1014 struct hpsa_tmf_struct *cp = (struct hpsa_tmf_struct *)
1015 &h->ioaccel2_cmd_pool[c->cmdindex];
1017 /* Tell the controller to post the reply to the queue for this
1018 * processor. This seems to give the best I/O throughput.
1020 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
1021 cp->reply_queue = smp_processor_id() % h->nreply_queues;
1023 cp->reply_queue = reply_queue % h->nreply_queues;
1024 /* Set the bits in the address sent down to include:
1025 * - performant mode bit not used in ioaccel mode 2
1026 * - pull count (bits 0-3)
1027 * - command type isn't needed for ioaccel2
1029 c->busaddr |= h->ioaccel2_blockFetchTable[0];
1032 static void set_ioaccel2_performant_mode(struct ctlr_info *h,
1033 struct CommandList *c,
1036 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
1039 * Tell the controller to post the reply to the queue for this
1040 * processor. This seems to give the best I/O throughput.
1042 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
1043 cp->reply_queue = smp_processor_id() % h->nreply_queues;
1045 cp->reply_queue = reply_queue % h->nreply_queues;
1047 * Set the bits in the address sent down to include:
1048 * - performant mode bit not used in ioaccel mode 2
1049 * - pull count (bits 0-3)
1050 * - command type isn't needed for ioaccel2
1052 c->busaddr |= (h->ioaccel2_blockFetchTable[cp->sg_count]);
1055 static int is_firmware_flash_cmd(u8 *cdb)
1057 return cdb[0] == BMIC_WRITE && cdb[6] == BMIC_FLASH_FIRMWARE;
1061 * During firmware flash, the heartbeat register may not update as frequently
1062 * as it should. So we dial down lockup detection during firmware flash. and
1063 * dial it back up when firmware flash completes.
1065 #define HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH (240 * HZ)
1066 #define HEARTBEAT_SAMPLE_INTERVAL (30 * HZ)
1067 static void dial_down_lockup_detection_during_fw_flash(struct ctlr_info *h,
1068 struct CommandList *c)
1070 if (!is_firmware_flash_cmd(c->Request.CDB))
1072 atomic_inc(&h->firmware_flash_in_progress);
1073 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH;
1076 static void dial_up_lockup_detection_on_fw_flash_complete(struct ctlr_info *h,
1077 struct CommandList *c)
1079 if (is_firmware_flash_cmd(c->Request.CDB) &&
1080 atomic_dec_and_test(&h->firmware_flash_in_progress))
1081 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
1084 static void __enqueue_cmd_and_start_io(struct ctlr_info *h,
1085 struct CommandList *c, int reply_queue)
1087 dial_down_lockup_detection_during_fw_flash(h, c);
1088 atomic_inc(&h->commands_outstanding);
1089 switch (c->cmd_type) {
1091 set_ioaccel1_performant_mode(h, c, reply_queue);
1092 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
1095 set_ioaccel2_performant_mode(h, c, reply_queue);
1096 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
1099 set_ioaccel2_tmf_performant_mode(h, c, reply_queue);
1100 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
1103 set_performant_mode(h, c, reply_queue);
1104 h->access.submit_command(h, c);
1108 static void enqueue_cmd_and_start_io(struct ctlr_info *h, struct CommandList *c)
1110 if (unlikely(hpsa_is_pending_event(c)))
1111 return finish_cmd(c);
1113 __enqueue_cmd_and_start_io(h, c, DEFAULT_REPLY_QUEUE);
1116 static inline int is_hba_lunid(unsigned char scsi3addr[])
1118 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0;
1121 static inline int is_scsi_rev_5(struct ctlr_info *h)
1123 if (!h->hba_inquiry_data)
1125 if ((h->hba_inquiry_data[2] & 0x07) == 5)
1130 static int hpsa_find_target_lun(struct ctlr_info *h,
1131 unsigned char scsi3addr[], int bus, int *target, int *lun)
1133 /* finds an unused bus, target, lun for a new physical device
1134 * assumes h->devlock is held
1137 DECLARE_BITMAP(lun_taken, HPSA_MAX_DEVICES);
1139 bitmap_zero(lun_taken, HPSA_MAX_DEVICES);
1141 for (i = 0; i < h->ndevices; i++) {
1142 if (h->dev[i]->bus == bus && h->dev[i]->target != -1)
1143 __set_bit(h->dev[i]->target, lun_taken);
1146 i = find_first_zero_bit(lun_taken, HPSA_MAX_DEVICES);
1147 if (i < HPSA_MAX_DEVICES) {
1156 static void hpsa_show_dev_msg(const char *level, struct ctlr_info *h,
1157 struct hpsa_scsi_dev_t *dev, char *description)
1159 #define LABEL_SIZE 25
1160 char label[LABEL_SIZE];
1162 if (h == NULL || h->pdev == NULL || h->scsi_host == NULL)
1165 switch (dev->devtype) {
1167 snprintf(label, LABEL_SIZE, "controller");
1169 case TYPE_ENCLOSURE:
1170 snprintf(label, LABEL_SIZE, "enclosure");
1174 snprintf(label, LABEL_SIZE, "external");
1175 else if (!is_logical_dev_addr_mode(dev->scsi3addr))
1176 snprintf(label, LABEL_SIZE, "%s",
1177 raid_label[PHYSICAL_DRIVE]);
1179 snprintf(label, LABEL_SIZE, "RAID-%s",
1180 dev->raid_level > RAID_UNKNOWN ? "?" :
1181 raid_label[dev->raid_level]);
1184 snprintf(label, LABEL_SIZE, "rom");
1187 snprintf(label, LABEL_SIZE, "tape");
1189 case TYPE_MEDIUM_CHANGER:
1190 snprintf(label, LABEL_SIZE, "changer");
1193 snprintf(label, LABEL_SIZE, "UNKNOWN");
1197 dev_printk(level, &h->pdev->dev,
1198 "scsi %d:%d:%d:%d: %s %s %.8s %.16s %s SSDSmartPathCap%c En%c Exp=%d\n",
1199 h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
1201 scsi_device_type(dev->devtype),
1205 dev->offload_config ? '+' : '-',
1206 dev->offload_enabled ? '+' : '-',
1207 dev->expose_device);
1210 /* Add an entry into h->dev[] array. */
1211 static int hpsa_scsi_add_entry(struct ctlr_info *h,
1212 struct hpsa_scsi_dev_t *device,
1213 struct hpsa_scsi_dev_t *added[], int *nadded)
1215 /* assumes h->devlock is held */
1216 int n = h->ndevices;
1218 unsigned char addr1[8], addr2[8];
1219 struct hpsa_scsi_dev_t *sd;
1221 if (n >= HPSA_MAX_DEVICES) {
1222 dev_err(&h->pdev->dev, "too many devices, some will be "
1227 /* physical devices do not have lun or target assigned until now. */
1228 if (device->lun != -1)
1229 /* Logical device, lun is already assigned. */
1232 /* If this device a non-zero lun of a multi-lun device
1233 * byte 4 of the 8-byte LUN addr will contain the logical
1234 * unit no, zero otherwise.
1236 if (device->scsi3addr[4] == 0) {
1237 /* This is not a non-zero lun of a multi-lun device */
1238 if (hpsa_find_target_lun(h, device->scsi3addr,
1239 device->bus, &device->target, &device->lun) != 0)
1244 /* This is a non-zero lun of a multi-lun device.
1245 * Search through our list and find the device which
1246 * has the same 8 byte LUN address, excepting byte 4 and 5.
1247 * Assign the same bus and target for this new LUN.
1248 * Use the logical unit number from the firmware.
1250 memcpy(addr1, device->scsi3addr, 8);
1253 for (i = 0; i < n; i++) {
1255 memcpy(addr2, sd->scsi3addr, 8);
1258 /* differ only in byte 4 and 5? */
1259 if (memcmp(addr1, addr2, 8) == 0) {
1260 device->bus = sd->bus;
1261 device->target = sd->target;
1262 device->lun = device->scsi3addr[4];
1266 if (device->lun == -1) {
1267 dev_warn(&h->pdev->dev, "physical device with no LUN=0,"
1268 " suspect firmware bug or unsupported hardware "
1269 "configuration.\n");
1277 added[*nadded] = device;
1279 hpsa_show_dev_msg(KERN_INFO, h, device,
1280 device->expose_device ? "added" : "masked");
1281 device->offload_to_be_enabled = device->offload_enabled;
1282 device->offload_enabled = 0;
1286 /* Update an entry in h->dev[] array. */
1287 static void hpsa_scsi_update_entry(struct ctlr_info *h,
1288 int entry, struct hpsa_scsi_dev_t *new_entry)
1290 int offload_enabled;
1291 /* assumes h->devlock is held */
1292 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1294 /* Raid level changed. */
1295 h->dev[entry]->raid_level = new_entry->raid_level;
1297 /* Raid offload parameters changed. Careful about the ordering. */
1298 if (new_entry->offload_config && new_entry->offload_enabled) {
1300 * if drive is newly offload_enabled, we want to copy the
1301 * raid map data first. If previously offload_enabled and
1302 * offload_config were set, raid map data had better be
1303 * the same as it was before. if raid map data is changed
1304 * then it had better be the case that
1305 * h->dev[entry]->offload_enabled is currently 0.
1307 h->dev[entry]->raid_map = new_entry->raid_map;
1308 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1310 if (new_entry->hba_ioaccel_enabled) {
1311 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1312 wmb(); /* set ioaccel_handle *before* hba_ioaccel_enabled */
1314 h->dev[entry]->hba_ioaccel_enabled = new_entry->hba_ioaccel_enabled;
1315 h->dev[entry]->offload_config = new_entry->offload_config;
1316 h->dev[entry]->offload_to_mirror = new_entry->offload_to_mirror;
1317 h->dev[entry]->queue_depth = new_entry->queue_depth;
1320 * We can turn off ioaccel offload now, but need to delay turning
1321 * it on until we can update h->dev[entry]->phys_disk[], but we
1322 * can't do that until all the devices are updated.
1324 h->dev[entry]->offload_to_be_enabled = new_entry->offload_enabled;
1325 if (!new_entry->offload_enabled)
1326 h->dev[entry]->offload_enabled = 0;
1328 offload_enabled = h->dev[entry]->offload_enabled;
1329 h->dev[entry]->offload_enabled = h->dev[entry]->offload_to_be_enabled;
1330 hpsa_show_dev_msg(KERN_INFO, h, h->dev[entry], "updated");
1331 h->dev[entry]->offload_enabled = offload_enabled;
1334 /* Replace an entry from h->dev[] array. */
1335 static void hpsa_scsi_replace_entry(struct ctlr_info *h,
1336 int entry, struct hpsa_scsi_dev_t *new_entry,
1337 struct hpsa_scsi_dev_t *added[], int *nadded,
1338 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1340 /* assumes h->devlock is held */
1341 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1342 removed[*nremoved] = h->dev[entry];
1346 * New physical devices won't have target/lun assigned yet
1347 * so we need to preserve the values in the slot we are replacing.
1349 if (new_entry->target == -1) {
1350 new_entry->target = h->dev[entry]->target;
1351 new_entry->lun = h->dev[entry]->lun;
1354 h->dev[entry] = new_entry;
1355 added[*nadded] = new_entry;
1357 hpsa_show_dev_msg(KERN_INFO, h, new_entry, "replaced");
1358 new_entry->offload_to_be_enabled = new_entry->offload_enabled;
1359 new_entry->offload_enabled = 0;
1362 /* Remove an entry from h->dev[] array. */
1363 static void hpsa_scsi_remove_entry(struct ctlr_info *h, int entry,
1364 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1366 /* assumes h->devlock is held */
1368 struct hpsa_scsi_dev_t *sd;
1370 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1373 removed[*nremoved] = h->dev[entry];
1376 for (i = entry; i < h->ndevices-1; i++)
1377 h->dev[i] = h->dev[i+1];
1379 hpsa_show_dev_msg(KERN_INFO, h, sd, "removed");
1382 #define SCSI3ADDR_EQ(a, b) ( \
1383 (a)[7] == (b)[7] && \
1384 (a)[6] == (b)[6] && \
1385 (a)[5] == (b)[5] && \
1386 (a)[4] == (b)[4] && \
1387 (a)[3] == (b)[3] && \
1388 (a)[2] == (b)[2] && \
1389 (a)[1] == (b)[1] && \
1392 static void fixup_botched_add(struct ctlr_info *h,
1393 struct hpsa_scsi_dev_t *added)
1395 /* called when scsi_add_device fails in order to re-adjust
1396 * h->dev[] to match the mid layer's view.
1398 unsigned long flags;
1401 spin_lock_irqsave(&h->lock, flags);
1402 for (i = 0; i < h->ndevices; i++) {
1403 if (h->dev[i] == added) {
1404 for (j = i; j < h->ndevices-1; j++)
1405 h->dev[j] = h->dev[j+1];
1410 spin_unlock_irqrestore(&h->lock, flags);
1414 static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1,
1415 struct hpsa_scsi_dev_t *dev2)
1417 /* we compare everything except lun and target as these
1418 * are not yet assigned. Compare parts likely
1421 if (memcmp(dev1->scsi3addr, dev2->scsi3addr,
1422 sizeof(dev1->scsi3addr)) != 0)
1424 if (memcmp(dev1->device_id, dev2->device_id,
1425 sizeof(dev1->device_id)) != 0)
1427 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0)
1429 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0)
1431 if (dev1->devtype != dev2->devtype)
1433 if (dev1->bus != dev2->bus)
1438 static inline int device_updated(struct hpsa_scsi_dev_t *dev1,
1439 struct hpsa_scsi_dev_t *dev2)
1441 /* Device attributes that can change, but don't mean
1442 * that the device is a different device, nor that the OS
1443 * needs to be told anything about the change.
1445 if (dev1->raid_level != dev2->raid_level)
1447 if (dev1->offload_config != dev2->offload_config)
1449 if (dev1->offload_enabled != dev2->offload_enabled)
1451 if (!is_logical_dev_addr_mode(dev1->scsi3addr))
1452 if (dev1->queue_depth != dev2->queue_depth)
1457 /* Find needle in haystack. If exact match found, return DEVICE_SAME,
1458 * and return needle location in *index. If scsi3addr matches, but not
1459 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
1460 * location in *index.
1461 * In the case of a minor device attribute change, such as RAID level, just
1462 * return DEVICE_UPDATED, along with the updated device's location in index.
1463 * If needle not found, return DEVICE_NOT_FOUND.
1465 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle,
1466 struct hpsa_scsi_dev_t *haystack[], int haystack_size,
1470 #define DEVICE_NOT_FOUND 0
1471 #define DEVICE_CHANGED 1
1472 #define DEVICE_SAME 2
1473 #define DEVICE_UPDATED 3
1475 return DEVICE_NOT_FOUND;
1477 for (i = 0; i < haystack_size; i++) {
1478 if (haystack[i] == NULL) /* previously removed. */
1480 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) {
1482 if (device_is_the_same(needle, haystack[i])) {
1483 if (device_updated(needle, haystack[i]))
1484 return DEVICE_UPDATED;
1487 /* Keep offline devices offline */
1488 if (needle->volume_offline)
1489 return DEVICE_NOT_FOUND;
1490 return DEVICE_CHANGED;
1495 return DEVICE_NOT_FOUND;
1498 static void hpsa_monitor_offline_device(struct ctlr_info *h,
1499 unsigned char scsi3addr[])
1501 struct offline_device_entry *device;
1502 unsigned long flags;
1504 /* Check to see if device is already on the list */
1505 spin_lock_irqsave(&h->offline_device_lock, flags);
1506 list_for_each_entry(device, &h->offline_device_list, offline_list) {
1507 if (memcmp(device->scsi3addr, scsi3addr,
1508 sizeof(device->scsi3addr)) == 0) {
1509 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1513 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1515 /* Device is not on the list, add it. */
1516 device = kmalloc(sizeof(*device), GFP_KERNEL);
1518 dev_warn(&h->pdev->dev, "out of memory in %s\n", __func__);
1521 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
1522 spin_lock_irqsave(&h->offline_device_lock, flags);
1523 list_add_tail(&device->offline_list, &h->offline_device_list);
1524 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1527 /* Print a message explaining various offline volume states */
1528 static void hpsa_show_volume_status(struct ctlr_info *h,
1529 struct hpsa_scsi_dev_t *sd)
1531 if (sd->volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED)
1532 dev_info(&h->pdev->dev,
1533 "C%d:B%d:T%d:L%d Volume status is not available through vital product data pages.\n",
1534 h->scsi_host->host_no,
1535 sd->bus, sd->target, sd->lun);
1536 switch (sd->volume_offline) {
1539 case HPSA_LV_UNDERGOING_ERASE:
1540 dev_info(&h->pdev->dev,
1541 "C%d:B%d:T%d:L%d Volume is undergoing background erase process.\n",
1542 h->scsi_host->host_no,
1543 sd->bus, sd->target, sd->lun);
1545 case HPSA_LV_NOT_AVAILABLE:
1546 dev_info(&h->pdev->dev,
1547 "C%d:B%d:T%d:L%d Volume is waiting for transforming volume.\n",
1548 h->scsi_host->host_no,
1549 sd->bus, sd->target, sd->lun);
1551 case HPSA_LV_UNDERGOING_RPI:
1552 dev_info(&h->pdev->dev,
1553 "C%d:B%d:T%d:L%d Volume is undergoing rapid parity init.\n",
1554 h->scsi_host->host_no,
1555 sd->bus, sd->target, sd->lun);
1557 case HPSA_LV_PENDING_RPI:
1558 dev_info(&h->pdev->dev,
1559 "C%d:B%d:T%d:L%d Volume is queued for rapid parity initialization process.\n",
1560 h->scsi_host->host_no,
1561 sd->bus, sd->target, sd->lun);
1563 case HPSA_LV_ENCRYPTED_NO_KEY:
1564 dev_info(&h->pdev->dev,
1565 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because key is not present.\n",
1566 h->scsi_host->host_no,
1567 sd->bus, sd->target, sd->lun);
1569 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
1570 dev_info(&h->pdev->dev,
1571 "C%d:B%d:T%d:L%d Volume is not encrypted and cannot be accessed because controller is in encryption-only mode.\n",
1572 h->scsi_host->host_no,
1573 sd->bus, sd->target, sd->lun);
1575 case HPSA_LV_UNDERGOING_ENCRYPTION:
1576 dev_info(&h->pdev->dev,
1577 "C%d:B%d:T%d:L%d Volume is undergoing encryption process.\n",
1578 h->scsi_host->host_no,
1579 sd->bus, sd->target, sd->lun);
1581 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
1582 dev_info(&h->pdev->dev,
1583 "C%d:B%d:T%d:L%d Volume is undergoing encryption re-keying process.\n",
1584 h->scsi_host->host_no,
1585 sd->bus, sd->target, sd->lun);
1587 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
1588 dev_info(&h->pdev->dev,
1589 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because controller does not have encryption enabled.\n",
1590 h->scsi_host->host_no,
1591 sd->bus, sd->target, sd->lun);
1593 case HPSA_LV_PENDING_ENCRYPTION:
1594 dev_info(&h->pdev->dev,
1595 "C%d:B%d:T%d:L%d Volume is pending migration to encrypted state, but process has not started.\n",
1596 h->scsi_host->host_no,
1597 sd->bus, sd->target, sd->lun);
1599 case HPSA_LV_PENDING_ENCRYPTION_REKEYING:
1600 dev_info(&h->pdev->dev,
1601 "C%d:B%d:T%d:L%d Volume is encrypted and is pending encryption rekeying.\n",
1602 h->scsi_host->host_no,
1603 sd->bus, sd->target, sd->lun);
1609 * Figure the list of physical drive pointers for a logical drive with
1610 * raid offload configured.
1612 static void hpsa_figure_phys_disk_ptrs(struct ctlr_info *h,
1613 struct hpsa_scsi_dev_t *dev[], int ndevices,
1614 struct hpsa_scsi_dev_t *logical_drive)
1616 struct raid_map_data *map = &logical_drive->raid_map;
1617 struct raid_map_disk_data *dd = &map->data[0];
1619 int total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
1620 le16_to_cpu(map->metadata_disks_per_row);
1621 int nraid_map_entries = le16_to_cpu(map->row_cnt) *
1622 le16_to_cpu(map->layout_map_count) *
1623 total_disks_per_row;
1624 int nphys_disk = le16_to_cpu(map->layout_map_count) *
1625 total_disks_per_row;
1628 if (nraid_map_entries > RAID_MAP_MAX_ENTRIES)
1629 nraid_map_entries = RAID_MAP_MAX_ENTRIES;
1631 logical_drive->nphysical_disks = nraid_map_entries;
1634 for (i = 0; i < nraid_map_entries; i++) {
1635 logical_drive->phys_disk[i] = NULL;
1636 if (!logical_drive->offload_config)
1638 for (j = 0; j < ndevices; j++) {
1641 if (dev[j]->devtype != TYPE_DISK)
1643 if (is_logical_device(dev[j]))
1645 if (dev[j]->ioaccel_handle != dd[i].ioaccel_handle)
1648 logical_drive->phys_disk[i] = dev[j];
1650 qdepth = min(h->nr_cmds, qdepth +
1651 logical_drive->phys_disk[i]->queue_depth);
1656 * This can happen if a physical drive is removed and
1657 * the logical drive is degraded. In that case, the RAID
1658 * map data will refer to a physical disk which isn't actually
1659 * present. And in that case offload_enabled should already
1660 * be 0, but we'll turn it off here just in case
1662 if (!logical_drive->phys_disk[i]) {
1663 logical_drive->offload_enabled = 0;
1664 logical_drive->offload_to_be_enabled = 0;
1665 logical_drive->queue_depth = 8;
1668 if (nraid_map_entries)
1670 * This is correct for reads, too high for full stripe writes,
1671 * way too high for partial stripe writes
1673 logical_drive->queue_depth = qdepth;
1675 logical_drive->queue_depth = h->nr_cmds;
1678 static void hpsa_update_log_drive_phys_drive_ptrs(struct ctlr_info *h,
1679 struct hpsa_scsi_dev_t *dev[], int ndevices)
1683 for (i = 0; i < ndevices; i++) {
1686 if (dev[i]->devtype != TYPE_DISK)
1688 if (!is_logical_device(dev[i]))
1692 * If offload is currently enabled, the RAID map and
1693 * phys_disk[] assignment *better* not be changing
1694 * and since it isn't changing, we do not need to
1697 if (dev[i]->offload_enabled)
1700 hpsa_figure_phys_disk_ptrs(h, dev, ndevices, dev[i]);
1704 static int hpsa_add_device(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
1711 if (is_logical_device(device)) /* RAID */
1712 rc = scsi_add_device(h->scsi_host, device->bus,
1713 device->target, device->lun);
1715 rc = hpsa_add_sas_device(h->sas_host, device);
1720 static void hpsa_remove_device(struct ctlr_info *h,
1721 struct hpsa_scsi_dev_t *device)
1723 struct scsi_device *sdev = NULL;
1728 if (is_logical_device(device)) { /* RAID */
1729 sdev = scsi_device_lookup(h->scsi_host, device->bus,
1730 device->target, device->lun);
1732 scsi_remove_device(sdev);
1733 scsi_device_put(sdev);
1736 * We don't expect to get here. Future commands
1737 * to this device will get a selection timeout as
1738 * if the device were gone.
1740 hpsa_show_dev_msg(KERN_WARNING, h, device,
1741 "didn't find device for removal.");
1744 hpsa_remove_sas_device(device);
1747 static void adjust_hpsa_scsi_table(struct ctlr_info *h,
1748 struct hpsa_scsi_dev_t *sd[], int nsds)
1750 /* sd contains scsi3 addresses and devtypes, and inquiry
1751 * data. This function takes what's in sd to be the current
1752 * reality and updates h->dev[] to reflect that reality.
1754 int i, entry, device_change, changes = 0;
1755 struct hpsa_scsi_dev_t *csd;
1756 unsigned long flags;
1757 struct hpsa_scsi_dev_t **added, **removed;
1758 int nadded, nremoved;
1761 * A reset can cause a device status to change
1762 * re-schedule the scan to see what happened.
1764 if (h->reset_in_progress) {
1765 h->drv_req_rescan = 1;
1769 added = kzalloc(sizeof(*added) * HPSA_MAX_DEVICES, GFP_KERNEL);
1770 removed = kzalloc(sizeof(*removed) * HPSA_MAX_DEVICES, GFP_KERNEL);
1772 if (!added || !removed) {
1773 dev_warn(&h->pdev->dev, "out of memory in "
1774 "adjust_hpsa_scsi_table\n");
1778 spin_lock_irqsave(&h->devlock, flags);
1780 /* find any devices in h->dev[] that are not in
1781 * sd[] and remove them from h->dev[], and for any
1782 * devices which have changed, remove the old device
1783 * info and add the new device info.
1784 * If minor device attributes change, just update
1785 * the existing device structure.
1790 while (i < h->ndevices) {
1792 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry);
1793 if (device_change == DEVICE_NOT_FOUND) {
1795 hpsa_scsi_remove_entry(h, i, removed, &nremoved);
1796 continue; /* remove ^^^, hence i not incremented */
1797 } else if (device_change == DEVICE_CHANGED) {
1799 hpsa_scsi_replace_entry(h, i, sd[entry],
1800 added, &nadded, removed, &nremoved);
1801 /* Set it to NULL to prevent it from being freed
1802 * at the bottom of hpsa_update_scsi_devices()
1805 } else if (device_change == DEVICE_UPDATED) {
1806 hpsa_scsi_update_entry(h, i, sd[entry]);
1811 /* Now, make sure every device listed in sd[] is also
1812 * listed in h->dev[], adding them if they aren't found
1815 for (i = 0; i < nsds; i++) {
1816 if (!sd[i]) /* if already added above. */
1819 /* Don't add devices which are NOT READY, FORMAT IN PROGRESS
1820 * as the SCSI mid-layer does not handle such devices well.
1821 * It relentlessly loops sending TUR at 3Hz, then READ(10)
1822 * at 160Hz, and prevents the system from coming up.
1824 if (sd[i]->volume_offline) {
1825 hpsa_show_volume_status(h, sd[i]);
1826 hpsa_show_dev_msg(KERN_INFO, h, sd[i], "offline");
1830 device_change = hpsa_scsi_find_entry(sd[i], h->dev,
1831 h->ndevices, &entry);
1832 if (device_change == DEVICE_NOT_FOUND) {
1834 if (hpsa_scsi_add_entry(h, sd[i], added, &nadded) != 0)
1836 sd[i] = NULL; /* prevent from being freed later. */
1837 } else if (device_change == DEVICE_CHANGED) {
1838 /* should never happen... */
1840 dev_warn(&h->pdev->dev,
1841 "device unexpectedly changed.\n");
1842 /* but if it does happen, we just ignore that device */
1845 hpsa_update_log_drive_phys_drive_ptrs(h, h->dev, h->ndevices);
1847 /* Now that h->dev[]->phys_disk[] is coherent, we can enable
1848 * any logical drives that need it enabled.
1850 for (i = 0; i < h->ndevices; i++) {
1851 if (h->dev[i] == NULL)
1853 h->dev[i]->offload_enabled = h->dev[i]->offload_to_be_enabled;
1856 spin_unlock_irqrestore(&h->devlock, flags);
1858 /* Monitor devices which are in one of several NOT READY states to be
1859 * brought online later. This must be done without holding h->devlock,
1860 * so don't touch h->dev[]
1862 for (i = 0; i < nsds; i++) {
1863 if (!sd[i]) /* if already added above. */
1865 if (sd[i]->volume_offline)
1866 hpsa_monitor_offline_device(h, sd[i]->scsi3addr);
1869 /* Don't notify scsi mid layer of any changes the first time through
1870 * (or if there are no changes) scsi_scan_host will do it later the
1871 * first time through.
1876 /* Notify scsi mid layer of any removed devices */
1877 for (i = 0; i < nremoved; i++) {
1878 if (removed[i] == NULL)
1880 if (removed[i]->expose_device)
1881 hpsa_remove_device(h, removed[i]);
1886 /* Notify scsi mid layer of any added devices */
1887 for (i = 0; i < nadded; i++) {
1890 if (added[i] == NULL)
1892 if (!(added[i]->expose_device))
1894 rc = hpsa_add_device(h, added[i]);
1897 dev_warn(&h->pdev->dev,
1898 "addition failed %d, device not added.", rc);
1899 /* now we have to remove it from h->dev,
1900 * since it didn't get added to scsi mid layer
1902 fixup_botched_add(h, added[i]);
1903 h->drv_req_rescan = 1;
1912 * Lookup bus/target/lun and return corresponding struct hpsa_scsi_dev_t *
1913 * Assume's h->devlock is held.
1915 static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h,
1916 int bus, int target, int lun)
1919 struct hpsa_scsi_dev_t *sd;
1921 for (i = 0; i < h->ndevices; i++) {
1923 if (sd->bus == bus && sd->target == target && sd->lun == lun)
1929 static int hpsa_slave_alloc(struct scsi_device *sdev)
1931 struct hpsa_scsi_dev_t *sd;
1932 unsigned long flags;
1933 struct ctlr_info *h;
1935 h = sdev_to_hba(sdev);
1936 spin_lock_irqsave(&h->devlock, flags);
1937 if (sdev_channel(sdev) == HPSA_PHYSICAL_DEVICE_BUS) {
1938 struct scsi_target *starget;
1939 struct sas_rphy *rphy;
1941 starget = scsi_target(sdev);
1942 rphy = target_to_rphy(starget);
1943 sd = hpsa_find_device_by_sas_rphy(h, rphy);
1945 sd->target = sdev_id(sdev);
1946 sd->lun = sdev->lun;
1949 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev),
1950 sdev_id(sdev), sdev->lun);
1952 if (sd && sd->expose_device) {
1953 atomic_set(&sd->ioaccel_cmds_out, 0);
1954 sdev->hostdata = sd;
1956 sdev->hostdata = NULL;
1957 spin_unlock_irqrestore(&h->devlock, flags);
1961 /* configure scsi device based on internal per-device structure */
1962 static int hpsa_slave_configure(struct scsi_device *sdev)
1964 struct hpsa_scsi_dev_t *sd;
1967 sd = sdev->hostdata;
1968 sdev->no_uld_attach = !sd || !sd->expose_device;
1971 queue_depth = sd->queue_depth != 0 ?
1972 sd->queue_depth : sdev->host->can_queue;
1974 queue_depth = sdev->host->can_queue;
1976 scsi_change_queue_depth(sdev, queue_depth);
1981 static void hpsa_slave_destroy(struct scsi_device *sdev)
1983 /* nothing to do. */
1986 static void hpsa_free_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
1990 if (!h->ioaccel2_cmd_sg_list)
1992 for (i = 0; i < h->nr_cmds; i++) {
1993 kfree(h->ioaccel2_cmd_sg_list[i]);
1994 h->ioaccel2_cmd_sg_list[i] = NULL;
1996 kfree(h->ioaccel2_cmd_sg_list);
1997 h->ioaccel2_cmd_sg_list = NULL;
2000 static int hpsa_allocate_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
2004 if (h->chainsize <= 0)
2007 h->ioaccel2_cmd_sg_list =
2008 kzalloc(sizeof(*h->ioaccel2_cmd_sg_list) * h->nr_cmds,
2010 if (!h->ioaccel2_cmd_sg_list)
2012 for (i = 0; i < h->nr_cmds; i++) {
2013 h->ioaccel2_cmd_sg_list[i] =
2014 kmalloc(sizeof(*h->ioaccel2_cmd_sg_list[i]) *
2015 h->maxsgentries, GFP_KERNEL);
2016 if (!h->ioaccel2_cmd_sg_list[i])
2022 hpsa_free_ioaccel2_sg_chain_blocks(h);
2026 static void hpsa_free_sg_chain_blocks(struct ctlr_info *h)
2030 if (!h->cmd_sg_list)
2032 for (i = 0; i < h->nr_cmds; i++) {
2033 kfree(h->cmd_sg_list[i]);
2034 h->cmd_sg_list[i] = NULL;
2036 kfree(h->cmd_sg_list);
2037 h->cmd_sg_list = NULL;
2040 static int hpsa_alloc_sg_chain_blocks(struct ctlr_info *h)
2044 if (h->chainsize <= 0)
2047 h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds,
2049 if (!h->cmd_sg_list) {
2050 dev_err(&h->pdev->dev, "Failed to allocate SG list\n");
2053 for (i = 0; i < h->nr_cmds; i++) {
2054 h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) *
2055 h->chainsize, GFP_KERNEL);
2056 if (!h->cmd_sg_list[i]) {
2057 dev_err(&h->pdev->dev, "Failed to allocate cmd SG\n");
2064 hpsa_free_sg_chain_blocks(h);
2068 static int hpsa_map_ioaccel2_sg_chain_block(struct ctlr_info *h,
2069 struct io_accel2_cmd *cp, struct CommandList *c)
2071 struct ioaccel2_sg_element *chain_block;
2075 chain_block = h->ioaccel2_cmd_sg_list[c->cmdindex];
2076 chain_size = le32_to_cpu(cp->sg[0].length);
2077 temp64 = pci_map_single(h->pdev, chain_block, chain_size,
2079 if (dma_mapping_error(&h->pdev->dev, temp64)) {
2080 /* prevent subsequent unmapping */
2081 cp->sg->address = 0;
2084 cp->sg->address = cpu_to_le64(temp64);
2088 static void hpsa_unmap_ioaccel2_sg_chain_block(struct ctlr_info *h,
2089 struct io_accel2_cmd *cp)
2091 struct ioaccel2_sg_element *chain_sg;
2096 temp64 = le64_to_cpu(chain_sg->address);
2097 chain_size = le32_to_cpu(cp->sg[0].length);
2098 pci_unmap_single(h->pdev, temp64, chain_size, PCI_DMA_TODEVICE);
2101 static int hpsa_map_sg_chain_block(struct ctlr_info *h,
2102 struct CommandList *c)
2104 struct SGDescriptor *chain_sg, *chain_block;
2108 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
2109 chain_block = h->cmd_sg_list[c->cmdindex];
2110 chain_sg->Ext = cpu_to_le32(HPSA_SG_CHAIN);
2111 chain_len = sizeof(*chain_sg) *
2112 (le16_to_cpu(c->Header.SGTotal) - h->max_cmd_sg_entries);
2113 chain_sg->Len = cpu_to_le32(chain_len);
2114 temp64 = pci_map_single(h->pdev, chain_block, chain_len,
2116 if (dma_mapping_error(&h->pdev->dev, temp64)) {
2117 /* prevent subsequent unmapping */
2118 chain_sg->Addr = cpu_to_le64(0);
2121 chain_sg->Addr = cpu_to_le64(temp64);
2125 static void hpsa_unmap_sg_chain_block(struct ctlr_info *h,
2126 struct CommandList *c)
2128 struct SGDescriptor *chain_sg;
2130 if (le16_to_cpu(c->Header.SGTotal) <= h->max_cmd_sg_entries)
2133 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
2134 pci_unmap_single(h->pdev, le64_to_cpu(chain_sg->Addr),
2135 le32_to_cpu(chain_sg->Len), PCI_DMA_TODEVICE);
2139 /* Decode the various types of errors on ioaccel2 path.
2140 * Return 1 for any error that should generate a RAID path retry.
2141 * Return 0 for errors that don't require a RAID path retry.
2143 static int handle_ioaccel_mode2_error(struct ctlr_info *h,
2144 struct CommandList *c,
2145 struct scsi_cmnd *cmd,
2146 struct io_accel2_cmd *c2)
2150 u32 ioaccel2_resid = 0;
2152 switch (c2->error_data.serv_response) {
2153 case IOACCEL2_SERV_RESPONSE_COMPLETE:
2154 switch (c2->error_data.status) {
2155 case IOACCEL2_STATUS_SR_TASK_COMP_GOOD:
2157 case IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND:
2158 cmd->result |= SAM_STAT_CHECK_CONDITION;
2159 if (c2->error_data.data_present !=
2160 IOACCEL2_SENSE_DATA_PRESENT) {
2161 memset(cmd->sense_buffer, 0,
2162 SCSI_SENSE_BUFFERSIZE);
2165 /* copy the sense data */
2166 data_len = c2->error_data.sense_data_len;
2167 if (data_len > SCSI_SENSE_BUFFERSIZE)
2168 data_len = SCSI_SENSE_BUFFERSIZE;
2169 if (data_len > sizeof(c2->error_data.sense_data_buff))
2171 sizeof(c2->error_data.sense_data_buff);
2172 memcpy(cmd->sense_buffer,
2173 c2->error_data.sense_data_buff, data_len);
2176 case IOACCEL2_STATUS_SR_TASK_COMP_BUSY:
2179 case IOACCEL2_STATUS_SR_TASK_COMP_RES_CON:
2182 case IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL:
2185 case IOACCEL2_STATUS_SR_TASK_COMP_ABORTED:
2193 case IOACCEL2_SERV_RESPONSE_FAILURE:
2194 switch (c2->error_data.status) {
2195 case IOACCEL2_STATUS_SR_IO_ERROR:
2196 case IOACCEL2_STATUS_SR_IO_ABORTED:
2197 case IOACCEL2_STATUS_SR_OVERRUN:
2200 case IOACCEL2_STATUS_SR_UNDERRUN:
2201 cmd->result = (DID_OK << 16); /* host byte */
2202 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
2203 ioaccel2_resid = get_unaligned_le32(
2204 &c2->error_data.resid_cnt[0]);
2205 scsi_set_resid(cmd, ioaccel2_resid);
2207 case IOACCEL2_STATUS_SR_NO_PATH_TO_DEVICE:
2208 case IOACCEL2_STATUS_SR_INVALID_DEVICE:
2209 case IOACCEL2_STATUS_SR_IOACCEL_DISABLED:
2210 /* We will get an event from ctlr to trigger rescan */
2217 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
2219 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
2221 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
2224 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
2231 return retry; /* retry on raid path? */
2234 static void hpsa_cmd_resolve_events(struct ctlr_info *h,
2235 struct CommandList *c)
2237 bool do_wake = false;
2240 * Prevent the following race in the abort handler:
2242 * 1. LLD is requested to abort a SCSI command
2243 * 2. The SCSI command completes
2244 * 3. The struct CommandList associated with step 2 is made available
2245 * 4. New I/O request to LLD to another LUN re-uses struct CommandList
2246 * 5. Abort handler follows scsi_cmnd->host_scribble and
2247 * finds struct CommandList and tries to aborts it
2248 * Now we have aborted the wrong command.
2250 * Reset c->scsi_cmd here so that the abort or reset handler will know
2251 * this command has completed. Then, check to see if the handler is
2252 * waiting for this command, and, if so, wake it.
2254 c->scsi_cmd = SCSI_CMD_IDLE;
2255 mb(); /* Declare command idle before checking for pending events. */
2256 if (c->abort_pending) {
2258 c->abort_pending = false;
2260 if (c->reset_pending) {
2261 unsigned long flags;
2262 struct hpsa_scsi_dev_t *dev;
2265 * There appears to be a reset pending; lock the lock and
2266 * reconfirm. If so, then decrement the count of outstanding
2267 * commands and wake the reset command if this is the last one.
2269 spin_lock_irqsave(&h->lock, flags);
2270 dev = c->reset_pending; /* Re-fetch under the lock. */
2271 if (dev && atomic_dec_and_test(&dev->reset_cmds_out))
2273 c->reset_pending = NULL;
2274 spin_unlock_irqrestore(&h->lock, flags);
2278 wake_up_all(&h->event_sync_wait_queue);
2281 static void hpsa_cmd_resolve_and_free(struct ctlr_info *h,
2282 struct CommandList *c)
2284 hpsa_cmd_resolve_events(h, c);
2285 cmd_tagged_free(h, c);
2288 static void hpsa_cmd_free_and_done(struct ctlr_info *h,
2289 struct CommandList *c, struct scsi_cmnd *cmd)
2291 hpsa_cmd_resolve_and_free(h, c);
2292 cmd->scsi_done(cmd);
2295 static void hpsa_retry_cmd(struct ctlr_info *h, struct CommandList *c)
2297 INIT_WORK(&c->work, hpsa_command_resubmit_worker);
2298 queue_work_on(raw_smp_processor_id(), h->resubmit_wq, &c->work);
2301 static void hpsa_set_scsi_cmd_aborted(struct scsi_cmnd *cmd)
2303 cmd->result = DID_ABORT << 16;
2306 static void hpsa_cmd_abort_and_free(struct ctlr_info *h, struct CommandList *c,
2307 struct scsi_cmnd *cmd)
2309 hpsa_set_scsi_cmd_aborted(cmd);
2310 dev_warn(&h->pdev->dev, "CDB %16phN was aborted with status 0x%x\n",
2311 c->Request.CDB, c->err_info->ScsiStatus);
2312 hpsa_cmd_resolve_and_free(h, c);
2315 static void process_ioaccel2_completion(struct ctlr_info *h,
2316 struct CommandList *c, struct scsi_cmnd *cmd,
2317 struct hpsa_scsi_dev_t *dev)
2319 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
2321 /* check for good status */
2322 if (likely(c2->error_data.serv_response == 0 &&
2323 c2->error_data.status == 0))
2324 return hpsa_cmd_free_and_done(h, c, cmd);
2327 * Any RAID offload error results in retry which will use
2328 * the normal I/O path so the controller can handle whatever's
2331 if (is_logical_device(dev) &&
2332 c2->error_data.serv_response ==
2333 IOACCEL2_SERV_RESPONSE_FAILURE) {
2334 if (c2->error_data.status ==
2335 IOACCEL2_STATUS_SR_IOACCEL_DISABLED)
2336 dev->offload_enabled = 0;
2338 return hpsa_retry_cmd(h, c);
2341 if (handle_ioaccel_mode2_error(h, c, cmd, c2))
2342 return hpsa_retry_cmd(h, c);
2344 return hpsa_cmd_free_and_done(h, c, cmd);
2347 /* Returns 0 on success, < 0 otherwise. */
2348 static int hpsa_evaluate_tmf_status(struct ctlr_info *h,
2349 struct CommandList *cp)
2351 u8 tmf_status = cp->err_info->ScsiStatus;
2353 switch (tmf_status) {
2354 case CISS_TMF_COMPLETE:
2356 * CISS_TMF_COMPLETE never happens, instead,
2357 * ei->CommandStatus == 0 for this case.
2359 case CISS_TMF_SUCCESS:
2361 case CISS_TMF_INVALID_FRAME:
2362 case CISS_TMF_NOT_SUPPORTED:
2363 case CISS_TMF_FAILED:
2364 case CISS_TMF_WRONG_LUN:
2365 case CISS_TMF_OVERLAPPED_TAG:
2368 dev_warn(&h->pdev->dev, "Unknown TMF status: 0x%02x\n",
2375 static void complete_scsi_command(struct CommandList *cp)
2377 struct scsi_cmnd *cmd;
2378 struct ctlr_info *h;
2379 struct ErrorInfo *ei;
2380 struct hpsa_scsi_dev_t *dev;
2381 struct io_accel2_cmd *c2;
2384 u8 asc; /* additional sense code */
2385 u8 ascq; /* additional sense code qualifier */
2386 unsigned long sense_data_size;
2391 dev = cmd->device->hostdata;
2392 c2 = &h->ioaccel2_cmd_pool[cp->cmdindex];
2394 scsi_dma_unmap(cmd); /* undo the DMA mappings */
2395 if ((cp->cmd_type == CMD_SCSI) &&
2396 (le16_to_cpu(cp->Header.SGTotal) > h->max_cmd_sg_entries))
2397 hpsa_unmap_sg_chain_block(h, cp);
2399 if ((cp->cmd_type == CMD_IOACCEL2) &&
2400 (c2->sg[0].chain_indicator == IOACCEL2_CHAIN))
2401 hpsa_unmap_ioaccel2_sg_chain_block(h, c2);
2403 cmd->result = (DID_OK << 16); /* host byte */
2404 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
2406 if (cp->cmd_type == CMD_IOACCEL2 || cp->cmd_type == CMD_IOACCEL1)
2407 atomic_dec(&cp->phys_disk->ioaccel_cmds_out);
2410 * We check for lockup status here as it may be set for
2411 * CMD_SCSI, CMD_IOACCEL1 and CMD_IOACCEL2 commands by
2412 * fail_all_oustanding_cmds()
2414 if (unlikely(ei->CommandStatus == CMD_CTLR_LOCKUP)) {
2415 /* DID_NO_CONNECT will prevent a retry */
2416 cmd->result = DID_NO_CONNECT << 16;
2417 return hpsa_cmd_free_and_done(h, cp, cmd);
2420 if ((unlikely(hpsa_is_pending_event(cp)))) {
2421 if (cp->reset_pending)
2422 return hpsa_cmd_resolve_and_free(h, cp);
2423 if (cp->abort_pending)
2424 return hpsa_cmd_abort_and_free(h, cp, cmd);
2427 if (cp->cmd_type == CMD_IOACCEL2)
2428 return process_ioaccel2_completion(h, cp, cmd, dev);
2430 scsi_set_resid(cmd, ei->ResidualCnt);
2431 if (ei->CommandStatus == 0)
2432 return hpsa_cmd_free_and_done(h, cp, cmd);
2434 /* For I/O accelerator commands, copy over some fields to the normal
2435 * CISS header used below for error handling.
2437 if (cp->cmd_type == CMD_IOACCEL1) {
2438 struct io_accel1_cmd *c = &h->ioaccel_cmd_pool[cp->cmdindex];
2439 cp->Header.SGList = scsi_sg_count(cmd);
2440 cp->Header.SGTotal = cpu_to_le16(cp->Header.SGList);
2441 cp->Request.CDBLen = le16_to_cpu(c->io_flags) &
2442 IOACCEL1_IOFLAGS_CDBLEN_MASK;
2443 cp->Header.tag = c->tag;
2444 memcpy(cp->Header.LUN.LunAddrBytes, c->CISS_LUN, 8);
2445 memcpy(cp->Request.CDB, c->CDB, cp->Request.CDBLen);
2447 /* Any RAID offload error results in retry which will use
2448 * the normal I/O path so the controller can handle whatever's
2451 if (is_logical_device(dev)) {
2452 if (ei->CommandStatus == CMD_IOACCEL_DISABLED)
2453 dev->offload_enabled = 0;
2454 return hpsa_retry_cmd(h, cp);
2458 /* an error has occurred */
2459 switch (ei->CommandStatus) {
2461 case CMD_TARGET_STATUS:
2462 cmd->result |= ei->ScsiStatus;
2463 /* copy the sense data */
2464 if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo))
2465 sense_data_size = SCSI_SENSE_BUFFERSIZE;
2467 sense_data_size = sizeof(ei->SenseInfo);
2468 if (ei->SenseLen < sense_data_size)
2469 sense_data_size = ei->SenseLen;
2470 memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size);
2472 decode_sense_data(ei->SenseInfo, sense_data_size,
2473 &sense_key, &asc, &ascq);
2474 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
2475 if (sense_key == ABORTED_COMMAND) {
2476 cmd->result |= DID_SOFT_ERROR << 16;
2481 /* Problem was not a check condition
2482 * Pass it up to the upper layers...
2484 if (ei->ScsiStatus) {
2485 dev_warn(&h->pdev->dev, "cp %p has status 0x%x "
2486 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
2487 "Returning result: 0x%x\n",
2489 sense_key, asc, ascq,
2491 } else { /* scsi status is zero??? How??? */
2492 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. "
2493 "Returning no connection.\n", cp),
2495 /* Ordinarily, this case should never happen,
2496 * but there is a bug in some released firmware
2497 * revisions that allows it to happen if, for
2498 * example, a 4100 backplane loses power and
2499 * the tape drive is in it. We assume that
2500 * it's a fatal error of some kind because we
2501 * can't show that it wasn't. We will make it
2502 * look like selection timeout since that is
2503 * the most common reason for this to occur,
2504 * and it's severe enough.
2507 cmd->result = DID_NO_CONNECT << 16;
2511 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
2513 case CMD_DATA_OVERRUN:
2514 dev_warn(&h->pdev->dev,
2515 "CDB %16phN data overrun\n", cp->Request.CDB);
2518 /* print_bytes(cp, sizeof(*cp), 1, 0);
2520 /* We get CMD_INVALID if you address a non-existent device
2521 * instead of a selection timeout (no response). You will
2522 * see this if you yank out a drive, then try to access it.
2523 * This is kind of a shame because it means that any other
2524 * CMD_INVALID (e.g. driver bug) will get interpreted as a
2525 * missing target. */
2526 cmd->result = DID_NO_CONNECT << 16;
2529 case CMD_PROTOCOL_ERR:
2530 cmd->result = DID_ERROR << 16;
2531 dev_warn(&h->pdev->dev, "CDB %16phN : protocol error\n",
2534 case CMD_HARDWARE_ERR:
2535 cmd->result = DID_ERROR << 16;
2536 dev_warn(&h->pdev->dev, "CDB %16phN : hardware error\n",
2539 case CMD_CONNECTION_LOST:
2540 cmd->result = DID_ERROR << 16;
2541 dev_warn(&h->pdev->dev, "CDB %16phN : connection lost\n",
2545 /* Return now to avoid calling scsi_done(). */
2546 return hpsa_cmd_abort_and_free(h, cp, cmd);
2547 case CMD_ABORT_FAILED:
2548 cmd->result = DID_ERROR << 16;
2549 dev_warn(&h->pdev->dev, "CDB %16phN : abort failed\n",
2552 case CMD_UNSOLICITED_ABORT:
2553 cmd->result = DID_SOFT_ERROR << 16; /* retry the command */
2554 dev_warn(&h->pdev->dev, "CDB %16phN : unsolicited abort\n",
2558 cmd->result = DID_TIME_OUT << 16;
2559 dev_warn(&h->pdev->dev, "CDB %16phN timed out\n",
2562 case CMD_UNABORTABLE:
2563 cmd->result = DID_ERROR << 16;
2564 dev_warn(&h->pdev->dev, "Command unabortable\n");
2566 case CMD_TMF_STATUS:
2567 if (hpsa_evaluate_tmf_status(h, cp)) /* TMF failed? */
2568 cmd->result = DID_ERROR << 16;
2570 case CMD_IOACCEL_DISABLED:
2571 /* This only handles the direct pass-through case since RAID
2572 * offload is handled above. Just attempt a retry.
2574 cmd->result = DID_SOFT_ERROR << 16;
2575 dev_warn(&h->pdev->dev,
2576 "cp %p had HP SSD Smart Path error\n", cp);
2579 cmd->result = DID_ERROR << 16;
2580 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n",
2581 cp, ei->CommandStatus);
2584 return hpsa_cmd_free_and_done(h, cp, cmd);
2587 static void hpsa_pci_unmap(struct pci_dev *pdev,
2588 struct CommandList *c, int sg_used, int data_direction)
2592 for (i = 0; i < sg_used; i++)
2593 pci_unmap_single(pdev, (dma_addr_t) le64_to_cpu(c->SG[i].Addr),
2594 le32_to_cpu(c->SG[i].Len),
2598 static int hpsa_map_one(struct pci_dev *pdev,
2599 struct CommandList *cp,
2606 if (buflen == 0 || data_direction == PCI_DMA_NONE) {
2607 cp->Header.SGList = 0;
2608 cp->Header.SGTotal = cpu_to_le16(0);
2612 addr64 = pci_map_single(pdev, buf, buflen, data_direction);
2613 if (dma_mapping_error(&pdev->dev, addr64)) {
2614 /* Prevent subsequent unmap of something never mapped */
2615 cp->Header.SGList = 0;
2616 cp->Header.SGTotal = cpu_to_le16(0);
2619 cp->SG[0].Addr = cpu_to_le64(addr64);
2620 cp->SG[0].Len = cpu_to_le32(buflen);
2621 cp->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* we are not chaining */
2622 cp->Header.SGList = 1; /* no. SGs contig in this cmd */
2623 cp->Header.SGTotal = cpu_to_le16(1); /* total sgs in cmd list */
2627 #define NO_TIMEOUT ((unsigned long) -1)
2628 #define DEFAULT_TIMEOUT 30000 /* milliseconds */
2629 static int hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h,
2630 struct CommandList *c, int reply_queue, unsigned long timeout_msecs)
2632 DECLARE_COMPLETION_ONSTACK(wait);
2635 __enqueue_cmd_and_start_io(h, c, reply_queue);
2636 if (timeout_msecs == NO_TIMEOUT) {
2637 /* TODO: get rid of this no-timeout thing */
2638 wait_for_completion_io(&wait);
2641 if (!wait_for_completion_io_timeout(&wait,
2642 msecs_to_jiffies(timeout_msecs))) {
2643 dev_warn(&h->pdev->dev, "Command timed out.\n");
2649 static int hpsa_scsi_do_simple_cmd(struct ctlr_info *h, struct CommandList *c,
2650 int reply_queue, unsigned long timeout_msecs)
2652 if (unlikely(lockup_detected(h))) {
2653 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
2656 return hpsa_scsi_do_simple_cmd_core(h, c, reply_queue, timeout_msecs);
2659 static u32 lockup_detected(struct ctlr_info *h)
2662 u32 rc, *lockup_detected;
2665 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
2666 rc = *lockup_detected;
2671 #define MAX_DRIVER_CMD_RETRIES 25
2672 static int hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
2673 struct CommandList *c, int data_direction, unsigned long timeout_msecs)
2675 int backoff_time = 10, retry_count = 0;
2679 memset(c->err_info, 0, sizeof(*c->err_info));
2680 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
2685 if (retry_count > 3) {
2686 msleep(backoff_time);
2687 if (backoff_time < 1000)
2690 } while ((check_for_unit_attention(h, c) ||
2691 check_for_busy(h, c)) &&
2692 retry_count <= MAX_DRIVER_CMD_RETRIES);
2693 hpsa_pci_unmap(h->pdev, c, 1, data_direction);
2694 if (retry_count > MAX_DRIVER_CMD_RETRIES)
2699 static void hpsa_print_cmd(struct ctlr_info *h, char *txt,
2700 struct CommandList *c)
2702 const u8 *cdb = c->Request.CDB;
2703 const u8 *lun = c->Header.LUN.LunAddrBytes;
2705 dev_warn(&h->pdev->dev, "%s: LUN:%02x%02x%02x%02x%02x%02x%02x%02x"
2706 " CDB:%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
2707 txt, lun[0], lun[1], lun[2], lun[3],
2708 lun[4], lun[5], lun[6], lun[7],
2709 cdb[0], cdb[1], cdb[2], cdb[3],
2710 cdb[4], cdb[5], cdb[6], cdb[7],
2711 cdb[8], cdb[9], cdb[10], cdb[11],
2712 cdb[12], cdb[13], cdb[14], cdb[15]);
2715 static void hpsa_scsi_interpret_error(struct ctlr_info *h,
2716 struct CommandList *cp)
2718 const struct ErrorInfo *ei = cp->err_info;
2719 struct device *d = &cp->h->pdev->dev;
2720 u8 sense_key, asc, ascq;
2723 switch (ei->CommandStatus) {
2724 case CMD_TARGET_STATUS:
2725 if (ei->SenseLen > sizeof(ei->SenseInfo))
2726 sense_len = sizeof(ei->SenseInfo);
2728 sense_len = ei->SenseLen;
2729 decode_sense_data(ei->SenseInfo, sense_len,
2730 &sense_key, &asc, &ascq);
2731 hpsa_print_cmd(h, "SCSI status", cp);
2732 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION)
2733 dev_warn(d, "SCSI Status = 02, Sense key = 0x%02x, ASC = 0x%02x, ASCQ = 0x%02x\n",
2734 sense_key, asc, ascq);
2736 dev_warn(d, "SCSI Status = 0x%02x\n", ei->ScsiStatus);
2737 if (ei->ScsiStatus == 0)
2738 dev_warn(d, "SCSI status is abnormally zero. "
2739 "(probably indicates selection timeout "
2740 "reported incorrectly due to a known "
2741 "firmware bug, circa July, 2001.)\n");
2743 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
2745 case CMD_DATA_OVERRUN:
2746 hpsa_print_cmd(h, "overrun condition", cp);
2749 /* controller unfortunately reports SCSI passthru's
2750 * to non-existent targets as invalid commands.
2752 hpsa_print_cmd(h, "invalid command", cp);
2753 dev_warn(d, "probably means device no longer present\n");
2756 case CMD_PROTOCOL_ERR:
2757 hpsa_print_cmd(h, "protocol error", cp);
2759 case CMD_HARDWARE_ERR:
2760 hpsa_print_cmd(h, "hardware error", cp);
2762 case CMD_CONNECTION_LOST:
2763 hpsa_print_cmd(h, "connection lost", cp);
2766 hpsa_print_cmd(h, "aborted", cp);
2768 case CMD_ABORT_FAILED:
2769 hpsa_print_cmd(h, "abort failed", cp);
2771 case CMD_UNSOLICITED_ABORT:
2772 hpsa_print_cmd(h, "unsolicited abort", cp);
2775 hpsa_print_cmd(h, "timed out", cp);
2777 case CMD_UNABORTABLE:
2778 hpsa_print_cmd(h, "unabortable", cp);
2780 case CMD_CTLR_LOCKUP:
2781 hpsa_print_cmd(h, "controller lockup detected", cp);
2784 hpsa_print_cmd(h, "unknown status", cp);
2785 dev_warn(d, "Unknown command status %x\n",
2790 static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
2791 u16 page, unsigned char *buf,
2792 unsigned char bufsize)
2795 struct CommandList *c;
2796 struct ErrorInfo *ei;
2800 if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize,
2801 page, scsi3addr, TYPE_CMD)) {
2805 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
2806 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
2810 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
2811 hpsa_scsi_interpret_error(h, c);
2819 static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr,
2820 u8 reset_type, int reply_queue)
2823 struct CommandList *c;
2824 struct ErrorInfo *ei;
2829 /* fill_cmd can't fail here, no data buffer to map. */
2830 (void) fill_cmd(c, reset_type, h, NULL, 0, 0,
2831 scsi3addr, TYPE_MSG);
2832 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
2834 dev_warn(&h->pdev->dev, "Failed to send reset command\n");
2837 /* no unmap needed here because no data xfer. */
2840 if (ei->CommandStatus != 0) {
2841 hpsa_scsi_interpret_error(h, c);
2849 static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c,
2850 struct hpsa_scsi_dev_t *dev,
2851 unsigned char *scsi3addr)
2855 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
2856 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
2858 if (hpsa_is_cmd_idle(c))
2861 switch (c->cmd_type) {
2863 case CMD_IOCTL_PEND:
2864 match = !memcmp(scsi3addr, &c->Header.LUN.LunAddrBytes,
2865 sizeof(c->Header.LUN.LunAddrBytes));
2870 if (c->phys_disk == dev) {
2871 /* HBA mode match */
2874 /* Possible RAID mode -- check each phys dev. */
2875 /* FIXME: Do we need to take out a lock here? If
2876 * so, we could just call hpsa_get_pdisk_of_ioaccel2()
2878 for (i = 0; i < dev->nphysical_disks && !match; i++) {
2879 /* FIXME: an alternate test might be
2881 * match = dev->phys_disk[i]->ioaccel_handle
2882 * == c2->scsi_nexus; */
2883 match = dev->phys_disk[i] == c->phys_disk;
2889 for (i = 0; i < dev->nphysical_disks && !match; i++) {
2890 match = dev->phys_disk[i]->ioaccel_handle ==
2891 le32_to_cpu(ac->it_nexus);
2895 case 0: /* The command is in the middle of being initialized. */
2900 dev_err(&h->pdev->dev, "unexpected cmd_type: %d\n",
2908 static int hpsa_do_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev,
2909 unsigned char *scsi3addr, u8 reset_type, int reply_queue)
2914 /* We can really only handle one reset at a time */
2915 if (mutex_lock_interruptible(&h->reset_mutex) == -EINTR) {
2916 dev_warn(&h->pdev->dev, "concurrent reset wait interrupted.\n");
2920 BUG_ON(atomic_read(&dev->reset_cmds_out) != 0);
2922 for (i = 0; i < h->nr_cmds; i++) {
2923 struct CommandList *c = h->cmd_pool + i;
2924 int refcount = atomic_inc_return(&c->refcount);
2926 if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev, scsi3addr)) {
2927 unsigned long flags;
2930 * Mark the target command as having a reset pending,
2931 * then lock a lock so that the command cannot complete
2932 * while we're considering it. If the command is not
2933 * idle then count it; otherwise revoke the event.
2935 c->reset_pending = dev;
2936 spin_lock_irqsave(&h->lock, flags); /* Implied MB */
2937 if (!hpsa_is_cmd_idle(c))
2938 atomic_inc(&dev->reset_cmds_out);
2940 c->reset_pending = NULL;
2941 spin_unlock_irqrestore(&h->lock, flags);
2947 rc = hpsa_send_reset(h, scsi3addr, reset_type, reply_queue);
2949 wait_event(h->event_sync_wait_queue,
2950 atomic_read(&dev->reset_cmds_out) == 0 ||
2951 lockup_detected(h));
2953 if (unlikely(lockup_detected(h))) {
2954 dev_warn(&h->pdev->dev,
2955 "Controller lockup detected during reset wait\n");
2960 atomic_set(&dev->reset_cmds_out, 0);
2962 mutex_unlock(&h->reset_mutex);
2966 static void hpsa_get_raid_level(struct ctlr_info *h,
2967 unsigned char *scsi3addr, unsigned char *raid_level)
2972 *raid_level = RAID_UNKNOWN;
2973 buf = kzalloc(64, GFP_KERNEL);
2976 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 0xC1, buf, 64);
2978 *raid_level = buf[8];
2979 if (*raid_level > RAID_UNKNOWN)
2980 *raid_level = RAID_UNKNOWN;
2985 #define HPSA_MAP_DEBUG
2986 #ifdef HPSA_MAP_DEBUG
2987 static void hpsa_debug_map_buff(struct ctlr_info *h, int rc,
2988 struct raid_map_data *map_buff)
2990 struct raid_map_disk_data *dd = &map_buff->data[0];
2992 u16 map_cnt, row_cnt, disks_per_row;
2997 /* Show details only if debugging has been activated. */
2998 if (h->raid_offload_debug < 2)
3001 dev_info(&h->pdev->dev, "structure_size = %u\n",
3002 le32_to_cpu(map_buff->structure_size));
3003 dev_info(&h->pdev->dev, "volume_blk_size = %u\n",
3004 le32_to_cpu(map_buff->volume_blk_size));
3005 dev_info(&h->pdev->dev, "volume_blk_cnt = 0x%llx\n",
3006 le64_to_cpu(map_buff->volume_blk_cnt));
3007 dev_info(&h->pdev->dev, "physicalBlockShift = %u\n",
3008 map_buff->phys_blk_shift);
3009 dev_info(&h->pdev->dev, "parity_rotation_shift = %u\n",
3010 map_buff->parity_rotation_shift);
3011 dev_info(&h->pdev->dev, "strip_size = %u\n",
3012 le16_to_cpu(map_buff->strip_size));
3013 dev_info(&h->pdev->dev, "disk_starting_blk = 0x%llx\n",
3014 le64_to_cpu(map_buff->disk_starting_blk));
3015 dev_info(&h->pdev->dev, "disk_blk_cnt = 0x%llx\n",
3016 le64_to_cpu(map_buff->disk_blk_cnt));
3017 dev_info(&h->pdev->dev, "data_disks_per_row = %u\n",
3018 le16_to_cpu(map_buff->data_disks_per_row));
3019 dev_info(&h->pdev->dev, "metadata_disks_per_row = %u\n",
3020 le16_to_cpu(map_buff->metadata_disks_per_row));
3021 dev_info(&h->pdev->dev, "row_cnt = %u\n",
3022 le16_to_cpu(map_buff->row_cnt));
3023 dev_info(&h->pdev->dev, "layout_map_count = %u\n",
3024 le16_to_cpu(map_buff->layout_map_count));
3025 dev_info(&h->pdev->dev, "flags = 0x%x\n",
3026 le16_to_cpu(map_buff->flags));
3027 dev_info(&h->pdev->dev, "encrypytion = %s\n",
3028 le16_to_cpu(map_buff->flags) &
3029 RAID_MAP_FLAG_ENCRYPT_ON ? "ON" : "OFF");
3030 dev_info(&h->pdev->dev, "dekindex = %u\n",
3031 le16_to_cpu(map_buff->dekindex));
3032 map_cnt = le16_to_cpu(map_buff->layout_map_count);
3033 for (map = 0; map < map_cnt; map++) {
3034 dev_info(&h->pdev->dev, "Map%u:\n", map);
3035 row_cnt = le16_to_cpu(map_buff->row_cnt);
3036 for (row = 0; row < row_cnt; row++) {
3037 dev_info(&h->pdev->dev, " Row%u:\n", row);
3039 le16_to_cpu(map_buff->data_disks_per_row);
3040 for (col = 0; col < disks_per_row; col++, dd++)
3041 dev_info(&h->pdev->dev,
3042 " D%02u: h=0x%04x xor=%u,%u\n",
3043 col, dd->ioaccel_handle,
3044 dd->xor_mult[0], dd->xor_mult[1]);
3046 le16_to_cpu(map_buff->metadata_disks_per_row);
3047 for (col = 0; col < disks_per_row; col++, dd++)
3048 dev_info(&h->pdev->dev,
3049 " M%02u: h=0x%04x xor=%u,%u\n",
3050 col, dd->ioaccel_handle,
3051 dd->xor_mult[0], dd->xor_mult[1]);
3056 static void hpsa_debug_map_buff(__attribute__((unused)) struct ctlr_info *h,
3057 __attribute__((unused)) int rc,
3058 __attribute__((unused)) struct raid_map_data *map_buff)
3063 static int hpsa_get_raid_map(struct ctlr_info *h,
3064 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
3067 struct CommandList *c;
3068 struct ErrorInfo *ei;
3072 if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map,
3073 sizeof(this_device->raid_map), 0,
3074 scsi3addr, TYPE_CMD)) {
3075 dev_warn(&h->pdev->dev, "hpsa_get_raid_map fill_cmd failed\n");
3079 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3080 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
3084 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3085 hpsa_scsi_interpret_error(h, c);
3091 /* @todo in the future, dynamically allocate RAID map memory */
3092 if (le32_to_cpu(this_device->raid_map.structure_size) >
3093 sizeof(this_device->raid_map)) {
3094 dev_warn(&h->pdev->dev, "RAID map size is too large!\n");
3097 hpsa_debug_map_buff(h, rc, &this_device->raid_map);
3104 static int hpsa_bmic_sense_subsystem_information(struct ctlr_info *h,
3105 unsigned char scsi3addr[], u16 bmic_device_index,
3106 struct bmic_sense_subsystem_info *buf, size_t bufsize)
3109 struct CommandList *c;
3110 struct ErrorInfo *ei;
3114 rc = fill_cmd(c, BMIC_SENSE_SUBSYSTEM_INFORMATION, h, buf, bufsize,
3115 0, RAID_CTLR_LUNID, TYPE_CMD);
3119 c->Request.CDB[2] = bmic_device_index & 0xff;
3120 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;
3122 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3123 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
3127 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3128 hpsa_scsi_interpret_error(h, c);
3136 static int hpsa_bmic_id_controller(struct ctlr_info *h,
3137 struct bmic_identify_controller *buf, size_t bufsize)
3140 struct CommandList *c;
3141 struct ErrorInfo *ei;
3145 rc = fill_cmd(c, BMIC_IDENTIFY_CONTROLLER, h, buf, bufsize,
3146 0, RAID_CTLR_LUNID, TYPE_CMD);
3150 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3151 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
3155 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3156 hpsa_scsi_interpret_error(h, c);
3164 static int hpsa_bmic_id_physical_device(struct ctlr_info *h,
3165 unsigned char scsi3addr[], u16 bmic_device_index,
3166 struct bmic_identify_physical_device *buf, size_t bufsize)
3169 struct CommandList *c;
3170 struct ErrorInfo *ei;
3173 rc = fill_cmd(c, BMIC_IDENTIFY_PHYSICAL_DEVICE, h, buf, bufsize,
3174 0, RAID_CTLR_LUNID, TYPE_CMD);
3178 c->Request.CDB[2] = bmic_device_index & 0xff;
3179 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;
3181 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE,
3184 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3185 hpsa_scsi_interpret_error(h, c);
3194 static u64 hpsa_get_sas_address_from_report_physical(struct ctlr_info *h,
3195 unsigned char *scsi3addr)
3197 struct ReportExtendedLUNdata *physdev;
3202 physdev = kzalloc(sizeof(*physdev), GFP_KERNEL);
3206 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
3207 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
3211 nphysicals = get_unaligned_be32(physdev->LUNListLength) / 24;
3213 for (i = 0; i < nphysicals; i++)
3214 if (!memcmp(&physdev->LUN[i].lunid[0], scsi3addr, 8)) {
3215 sa = get_unaligned_be64(&physdev->LUN[i].wwid[0]);
3224 static void hpsa_get_sas_address(struct ctlr_info *h, unsigned char *scsi3addr,
3225 struct hpsa_scsi_dev_t *dev)
3230 if (is_hba_lunid(scsi3addr)) {
3231 struct bmic_sense_subsystem_info *ssi;
3233 ssi = kzalloc(sizeof(*ssi), GFP_KERNEL);
3235 dev_warn(&h->pdev->dev,
3236 "%s: out of memory\n", __func__);
3240 rc = hpsa_bmic_sense_subsystem_information(h,
3241 scsi3addr, 0, ssi, sizeof(*ssi));
3243 sa = get_unaligned_be64(ssi->primary_world_wide_id);
3244 h->sas_address = sa;
3249 sa = hpsa_get_sas_address_from_report_physical(h, scsi3addr);
3251 dev->sas_address = sa;
3254 /* Get a device id from inquiry page 0x83 */
3255 static int hpsa_vpd_page_supported(struct ctlr_info *h,
3256 unsigned char scsi3addr[], u8 page)
3261 unsigned char *buf, bufsize;
3263 buf = kzalloc(256, GFP_KERNEL);
3267 /* Get the size of the page list first */
3268 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3269 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3270 buf, HPSA_VPD_HEADER_SZ);
3272 goto exit_unsupported;
3274 if ((pages + HPSA_VPD_HEADER_SZ) <= 255)
3275 bufsize = pages + HPSA_VPD_HEADER_SZ;
3279 /* Get the whole VPD page list */
3280 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3281 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3284 goto exit_unsupported;
3287 for (i = 1; i <= pages; i++)
3288 if (buf[3 + i] == page)
3289 goto exit_supported;
3298 static void hpsa_get_ioaccel_status(struct ctlr_info *h,
3299 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
3305 this_device->offload_config = 0;
3306 this_device->offload_enabled = 0;
3307 this_device->offload_to_be_enabled = 0;
3309 buf = kzalloc(64, GFP_KERNEL);
3312 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_IOACCEL_STATUS))
3314 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3315 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, buf, 64);
3319 #define IOACCEL_STATUS_BYTE 4
3320 #define OFFLOAD_CONFIGURED_BIT 0x01
3321 #define OFFLOAD_ENABLED_BIT 0x02
3322 ioaccel_status = buf[IOACCEL_STATUS_BYTE];
3323 this_device->offload_config =
3324 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT);
3325 if (this_device->offload_config) {
3326 this_device->offload_enabled =
3327 !!(ioaccel_status & OFFLOAD_ENABLED_BIT);
3328 if (hpsa_get_raid_map(h, scsi3addr, this_device))
3329 this_device->offload_enabled = 0;
3331 this_device->offload_to_be_enabled = this_device->offload_enabled;
3337 /* Get the device id from inquiry page 0x83 */
3338 static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr,
3339 unsigned char *device_id, int index, int buflen)
3346 buf = kzalloc(64, GFP_KERNEL);
3349 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 0x83, buf, 64);
3351 memcpy(device_id, &buf[index], buflen);
3358 static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
3359 void *buf, int bufsize,
3360 int extended_response)
3363 struct CommandList *c;
3364 unsigned char scsi3addr[8];
3365 struct ErrorInfo *ei;
3369 /* address the controller */
3370 memset(scsi3addr, 0, sizeof(scsi3addr));
3371 if (fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h,
3372 buf, bufsize, 0, scsi3addr, TYPE_CMD)) {
3376 if (extended_response)
3377 c->Request.CDB[1] = extended_response;
3378 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3379 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
3383 if (ei->CommandStatus != 0 &&
3384 ei->CommandStatus != CMD_DATA_UNDERRUN) {
3385 hpsa_scsi_interpret_error(h, c);
3388 struct ReportLUNdata *rld = buf;
3390 if (rld->extended_response_flag != extended_response) {
3391 dev_err(&h->pdev->dev,
3392 "report luns requested format %u, got %u\n",
3394 rld->extended_response_flag);
3403 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
3404 struct ReportExtendedLUNdata *buf, int bufsize)
3406 return hpsa_scsi_do_report_luns(h, 0, buf, bufsize,
3407 HPSA_REPORT_PHYS_EXTENDED);
3410 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,
3411 struct ReportLUNdata *buf, int bufsize)
3413 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0);
3416 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device,
3417 int bus, int target, int lun)
3420 device->target = target;
3424 /* Use VPD inquiry to get details of volume status */
3425 static int hpsa_get_volume_status(struct ctlr_info *h,
3426 unsigned char scsi3addr[])
3433 buf = kzalloc(64, GFP_KERNEL);
3435 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3437 /* Does controller have VPD for logical volume status? */
3438 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_STATUS))
3441 /* Get the size of the VPD return buffer */
3442 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3443 buf, HPSA_VPD_HEADER_SZ);
3448 /* Now get the whole VPD buffer */
3449 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3450 buf, size + HPSA_VPD_HEADER_SZ);
3453 status = buf[4]; /* status byte */
3459 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3462 /* Determine offline status of a volume.
3465 * 0xff (offline for unknown reasons)
3466 * # (integer code indicating one of several NOT READY states
3467 * describing why a volume is to be kept offline)
3469 static int hpsa_volume_offline(struct ctlr_info *h,
3470 unsigned char scsi3addr[])
3472 struct CommandList *c;
3473 unsigned char *sense;
3474 u8 sense_key, asc, ascq;
3479 #define ASC_LUN_NOT_READY 0x04
3480 #define ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS 0x04
3481 #define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02
3485 (void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD);
3486 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
3491 sense = c->err_info->SenseInfo;
3492 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
3493 sense_len = sizeof(c->err_info->SenseInfo);
3495 sense_len = c->err_info->SenseLen;
3496 decode_sense_data(sense, sense_len, &sense_key, &asc, &ascq);
3497 cmd_status = c->err_info->CommandStatus;
3498 scsi_status = c->err_info->ScsiStatus;
3500 /* Is the volume 'not ready'? */
3501 if (cmd_status != CMD_TARGET_STATUS ||
3502 scsi_status != SAM_STAT_CHECK_CONDITION ||
3503 sense_key != NOT_READY ||
3504 asc != ASC_LUN_NOT_READY) {
3508 /* Determine the reason for not ready state */
3509 ldstat = hpsa_get_volume_status(h, scsi3addr);
3511 /* Keep volume offline in certain cases: */
3513 case HPSA_LV_UNDERGOING_ERASE:
3514 case HPSA_LV_NOT_AVAILABLE:
3515 case HPSA_LV_UNDERGOING_RPI:
3516 case HPSA_LV_PENDING_RPI:
3517 case HPSA_LV_ENCRYPTED_NO_KEY:
3518 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
3519 case HPSA_LV_UNDERGOING_ENCRYPTION:
3520 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
3521 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
3523 case HPSA_VPD_LV_STATUS_UNSUPPORTED:
3524 /* If VPD status page isn't available,
3525 * use ASC/ASCQ to determine state
3527 if ((ascq == ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS) ||
3528 (ascq == ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ))
3538 * Find out if a logical device supports aborts by simply trying one.
3539 * Smart Array may claim not to support aborts on logical drives, but
3540 * if a MSA2000 * is connected, the drives on that will be presented
3541 * by the Smart Array as logical drives, and aborts may be sent to
3542 * those devices successfully. So the simplest way to find out is
3543 * to simply try an abort and see how the device responds.
3545 static int hpsa_device_supports_aborts(struct ctlr_info *h,
3546 unsigned char *scsi3addr)
3548 struct CommandList *c;
3549 struct ErrorInfo *ei;
3552 u64 tag = (u64) -1; /* bogus tag */
3554 /* Assume that physical devices support aborts */
3555 if (!is_logical_dev_addr_mode(scsi3addr))
3560 (void) fill_cmd(c, HPSA_ABORT_MSG, h, &tag, 0, 0, scsi3addr, TYPE_MSG);
3561 (void) hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
3562 /* no unmap needed here because no data xfer. */
3564 switch (ei->CommandStatus) {
3568 case CMD_UNABORTABLE:
3569 case CMD_ABORT_FAILED:
3572 case CMD_TMF_STATUS:
3573 rc = hpsa_evaluate_tmf_status(h, c);
3583 static void sanitize_inquiry_string(unsigned char *s, int len)
3585 bool terminated = false;
3587 for (; len > 0; (--len, ++s)) {
3590 if (terminated || *s < 0x20 || *s > 0x7e)
3595 static int hpsa_update_device_info(struct ctlr_info *h,
3596 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device,
3597 unsigned char *is_OBDR_device)
3600 #define OBDR_SIG_OFFSET 43
3601 #define OBDR_TAPE_SIG "$DR-10"
3602 #define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1)
3603 #define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN)
3605 unsigned char *inq_buff;
3606 unsigned char *obdr_sig;
3609 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
3615 /* Do an inquiry to the device to see what it is. */
3616 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
3617 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
3618 /* Inquiry failed (msg printed already) */
3619 dev_err(&h->pdev->dev,
3620 "hpsa_update_device_info: inquiry failed\n");
3625 sanitize_inquiry_string(&inq_buff[8], 8);
3626 sanitize_inquiry_string(&inq_buff[16], 16);
3628 this_device->devtype = (inq_buff[0] & 0x1f);
3629 memcpy(this_device->scsi3addr, scsi3addr, 8);
3630 memcpy(this_device->vendor, &inq_buff[8],
3631 sizeof(this_device->vendor));
3632 memcpy(this_device->model, &inq_buff[16],
3633 sizeof(this_device->model));
3634 memset(this_device->device_id, 0,
3635 sizeof(this_device->device_id));
3636 hpsa_get_device_id(h, scsi3addr, this_device->device_id, 8,
3637 sizeof(this_device->device_id));
3639 if (this_device->devtype == TYPE_DISK &&
3640 is_logical_dev_addr_mode(scsi3addr)) {
3643 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level);
3644 if (h->fw_support & MISC_FW_RAID_OFFLOAD_BASIC)
3645 hpsa_get_ioaccel_status(h, scsi3addr, this_device);
3646 volume_offline = hpsa_volume_offline(h, scsi3addr);
3647 if (volume_offline < 0 || volume_offline > 0xff)
3648 volume_offline = HPSA_VPD_LV_STATUS_UNSUPPORTED;
3649 this_device->volume_offline = volume_offline & 0xff;
3651 this_device->raid_level = RAID_UNKNOWN;
3652 this_device->offload_config = 0;
3653 this_device->offload_enabled = 0;
3654 this_device->offload_to_be_enabled = 0;
3655 this_device->hba_ioaccel_enabled = 0;
3656 this_device->volume_offline = 0;
3657 this_device->queue_depth = h->nr_cmds;
3660 if (is_OBDR_device) {
3661 /* See if this is a One-Button-Disaster-Recovery device
3662 * by looking for "$DR-10" at offset 43 in inquiry data.
3664 obdr_sig = &inq_buff[OBDR_SIG_OFFSET];
3665 *is_OBDR_device = (this_device->devtype == TYPE_ROM &&
3666 strncmp(obdr_sig, OBDR_TAPE_SIG,
3667 OBDR_SIG_LEN) == 0);
3677 static void hpsa_update_device_supports_aborts(struct ctlr_info *h,
3678 struct hpsa_scsi_dev_t *dev, u8 *scsi3addr)
3680 unsigned long flags;
3683 * See if this device supports aborts. If we already know
3684 * the device, we already know if it supports aborts, otherwise
3685 * we have to find out if it supports aborts by trying one.
3687 spin_lock_irqsave(&h->devlock, flags);
3688 rc = hpsa_scsi_find_entry(dev, h->dev, h->ndevices, &entry);
3689 if ((rc == DEVICE_SAME || rc == DEVICE_UPDATED) &&
3690 entry >= 0 && entry < h->ndevices) {
3691 dev->supports_aborts = h->dev[entry]->supports_aborts;
3692 spin_unlock_irqrestore(&h->devlock, flags);
3694 spin_unlock_irqrestore(&h->devlock, flags);
3695 dev->supports_aborts =
3696 hpsa_device_supports_aborts(h, scsi3addr);
3697 if (dev->supports_aborts < 0)
3698 dev->supports_aborts = 0;
3703 * Helper function to assign bus, target, lun mapping of devices.
3704 * Logical drive target and lun are assigned at this time, but
3705 * physical device lun and target assignment are deferred (assigned
3706 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
3708 static void figure_bus_target_lun(struct ctlr_info *h,
3709 u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device)
3711 u32 lunid = get_unaligned_le32(lunaddrbytes);
3713 if (!is_logical_dev_addr_mode(lunaddrbytes)) {
3714 /* physical device, target and lun filled in later */
3715 if (is_hba_lunid(lunaddrbytes))
3716 hpsa_set_bus_target_lun(device,
3717 HPSA_HBA_BUS, 0, lunid & 0x3fff);
3719 /* defer target, lun assignment for physical devices */
3720 hpsa_set_bus_target_lun(device,
3721 HPSA_PHYSICAL_DEVICE_BUS, -1, -1);
3724 /* It's a logical device */
3725 if (device->external) {
3726 hpsa_set_bus_target_lun(device,
3727 HPSA_EXTERNAL_RAID_VOLUME_BUS, (lunid >> 16) & 0x3fff,
3731 hpsa_set_bus_target_lun(device, HPSA_RAID_VOLUME_BUS,
3737 * Get address of physical disk used for an ioaccel2 mode command:
3738 * 1. Extract ioaccel2 handle from the command.
3739 * 2. Find a matching ioaccel2 handle from list of physical disks.
3741 * 1 and set scsi3addr to address of matching physical
3742 * 0 if no matching physical disk was found.
3744 static int hpsa_get_pdisk_of_ioaccel2(struct ctlr_info *h,
3745 struct CommandList *ioaccel2_cmd_to_abort, unsigned char *scsi3addr)
3747 struct io_accel2_cmd *c2 =
3748 &h->ioaccel2_cmd_pool[ioaccel2_cmd_to_abort->cmdindex];
3749 unsigned long flags;
3752 spin_lock_irqsave(&h->devlock, flags);
3753 for (i = 0; i < h->ndevices; i++)
3754 if (h->dev[i]->ioaccel_handle == le32_to_cpu(c2->scsi_nexus)) {
3755 memcpy(scsi3addr, h->dev[i]->scsi3addr,
3756 sizeof(h->dev[i]->scsi3addr));
3757 spin_unlock_irqrestore(&h->devlock, flags);
3760 spin_unlock_irqrestore(&h->devlock, flags);
3764 static int figure_external_status(struct ctlr_info *h, int raid_ctlr_position,
3765 int i, int nphysicals, int nlocal_logicals)
3767 /* In report logicals, local logicals are listed first,
3768 * then any externals.
3770 int logicals_start = nphysicals + (raid_ctlr_position == 0);
3772 if (i == raid_ctlr_position)
3775 if (i < logicals_start)
3778 /* i is in logicals range, but still within local logicals */
3779 if ((i - nphysicals - (raid_ctlr_position == 0)) < nlocal_logicals)
3782 return 1; /* it's an external lun */
3786 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
3787 * logdev. The number of luns in physdev and logdev are returned in
3788 * *nphysicals and *nlogicals, respectively.
3789 * Returns 0 on success, -1 otherwise.
3791 static int hpsa_gather_lun_info(struct ctlr_info *h,
3792 struct ReportExtendedLUNdata *physdev, u32 *nphysicals,
3793 struct ReportLUNdata *logdev, u32 *nlogicals)
3795 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
3796 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
3799 *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 24;
3800 if (*nphysicals > HPSA_MAX_PHYS_LUN) {
3801 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded. %d LUNs ignored.\n",
3802 HPSA_MAX_PHYS_LUN, *nphysicals - HPSA_MAX_PHYS_LUN);
3803 *nphysicals = HPSA_MAX_PHYS_LUN;
3805 if (hpsa_scsi_do_report_log_luns(h, logdev, sizeof(*logdev))) {
3806 dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
3809 *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8;
3810 /* Reject Logicals in excess of our max capability. */
3811 if (*nlogicals > HPSA_MAX_LUN) {
3812 dev_warn(&h->pdev->dev,
3813 "maximum logical LUNs (%d) exceeded. "
3814 "%d LUNs ignored.\n", HPSA_MAX_LUN,
3815 *nlogicals - HPSA_MAX_LUN);
3816 *nlogicals = HPSA_MAX_LUN;
3818 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) {
3819 dev_warn(&h->pdev->dev,
3820 "maximum logical + physical LUNs (%d) exceeded. "
3821 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
3822 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN);
3823 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals;
3828 static u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position,
3829 int i, int nphysicals, int nlogicals,
3830 struct ReportExtendedLUNdata *physdev_list,
3831 struct ReportLUNdata *logdev_list)
3833 /* Helper function, figure out where the LUN ID info is coming from
3834 * given index i, lists of physical and logical devices, where in
3835 * the list the raid controller is supposed to appear (first or last)
3838 int logicals_start = nphysicals + (raid_ctlr_position == 0);
3839 int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0);
3841 if (i == raid_ctlr_position)
3842 return RAID_CTLR_LUNID;
3844 if (i < logicals_start)
3845 return &physdev_list->LUN[i -
3846 (raid_ctlr_position == 0)].lunid[0];
3848 if (i < last_device)
3849 return &logdev_list->LUN[i - nphysicals -
3850 (raid_ctlr_position == 0)][0];
3855 /* get physical drive ioaccel handle and queue depth */
3856 static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h,
3857 struct hpsa_scsi_dev_t *dev,
3858 struct ReportExtendedLUNdata *rlep, int rle_index,
3859 struct bmic_identify_physical_device *id_phys)
3862 struct ext_report_lun_entry *rle = &rlep->LUN[rle_index];
3864 dev->ioaccel_handle = rle->ioaccel_handle;
3865 if ((rle->device_flags & 0x08) && dev->ioaccel_handle)
3866 dev->hba_ioaccel_enabled = 1;
3867 memset(id_phys, 0, sizeof(*id_phys));
3868 rc = hpsa_bmic_id_physical_device(h, &rle->lunid[0],
3869 GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]), id_phys,
3872 /* Reserve space for FW operations */
3873 #define DRIVE_CMDS_RESERVED_FOR_FW 2
3874 #define DRIVE_QUEUE_DEPTH 7
3876 le16_to_cpu(id_phys->current_queue_depth_limit) -
3877 DRIVE_CMDS_RESERVED_FOR_FW;
3879 dev->queue_depth = DRIVE_QUEUE_DEPTH; /* conservative */
3882 static void hpsa_get_path_info(struct hpsa_scsi_dev_t *this_device,
3883 struct ReportExtendedLUNdata *rlep, int rle_index,
3884 struct bmic_identify_physical_device *id_phys)
3886 struct ext_report_lun_entry *rle = &rlep->LUN[rle_index];
3888 if ((rle->device_flags & 0x08) && this_device->ioaccel_handle)
3889 this_device->hba_ioaccel_enabled = 1;
3891 memcpy(&this_device->active_path_index,
3892 &id_phys->active_path_number,
3893 sizeof(this_device->active_path_index));
3894 memcpy(&this_device->path_map,
3895 &id_phys->redundant_path_present_map,
3896 sizeof(this_device->path_map));
3897 memcpy(&this_device->box,
3898 &id_phys->alternate_paths_phys_box_on_port,
3899 sizeof(this_device->box));
3900 memcpy(&this_device->phys_connector,
3901 &id_phys->alternate_paths_phys_connector,
3902 sizeof(this_device->phys_connector));
3903 memcpy(&this_device->bay,
3904 &id_phys->phys_bay_in_box,
3905 sizeof(this_device->bay));
3908 /* get number of local logical disks. */
3909 static int hpsa_set_local_logical_count(struct ctlr_info *h,
3910 struct bmic_identify_controller *id_ctlr,
3916 dev_warn(&h->pdev->dev, "%s: id_ctlr buffer is NULL.\n",
3920 memset(id_ctlr, 0, sizeof(*id_ctlr));
3921 rc = hpsa_bmic_id_controller(h, id_ctlr, sizeof(*id_ctlr));
3923 if (id_ctlr->configured_logical_drive_count < 256)
3924 *nlocals = id_ctlr->configured_logical_drive_count;
3926 *nlocals = le16_to_cpu(
3927 id_ctlr->extended_logical_unit_count);
3933 static bool hpsa_is_disk_spare(struct ctlr_info *h, u8 *lunaddrbytes)
3935 struct bmic_identify_physical_device *id_phys;
3936 bool is_spare = false;
3939 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
3943 rc = hpsa_bmic_id_physical_device(h,
3945 GET_BMIC_DRIVE_NUMBER(lunaddrbytes),
3946 id_phys, sizeof(*id_phys));
3948 is_spare = (id_phys->more_flags >> 6) & 0x01;
3954 #define RPL_DEV_FLAG_NON_DISK 0x1
3955 #define RPL_DEV_FLAG_UNCONFIG_DISK_REPORTING_SUPPORTED 0x2
3956 #define RPL_DEV_FLAG_UNCONFIG_DISK 0x4
3958 #define BMIC_DEVICE_TYPE_ENCLOSURE 6
3960 static bool hpsa_skip_device(struct ctlr_info *h, u8 *lunaddrbytes,
3961 struct ext_report_lun_entry *rle)
3966 if (!MASKED_DEVICE(lunaddrbytes))
3969 device_flags = rle->device_flags;
3970 device_type = rle->device_type;
3972 if (device_flags & RPL_DEV_FLAG_NON_DISK) {
3973 if (device_type == BMIC_DEVICE_TYPE_ENCLOSURE)
3978 if (!(device_flags & RPL_DEV_FLAG_UNCONFIG_DISK_REPORTING_SUPPORTED))
3981 if (device_flags & RPL_DEV_FLAG_UNCONFIG_DISK)
3985 * Spares may be spun down, we do not want to
3986 * do an Inquiry to a RAID set spare drive as
3987 * that would have them spun up, that is a
3988 * performance hit because I/O to the RAID device
3989 * stops while the spin up occurs which can take
3992 if (hpsa_is_disk_spare(h, lunaddrbytes))
3998 static void hpsa_update_scsi_devices(struct ctlr_info *h)
4000 /* the idea here is we could get notified
4001 * that some devices have changed, so we do a report
4002 * physical luns and report logical luns cmd, and adjust
4003 * our list of devices accordingly.
4005 * The scsi3addr's of devices won't change so long as the
4006 * adapter is not reset. That means we can rescan and
4007 * tell which devices we already know about, vs. new
4008 * devices, vs. disappearing devices.
4010 struct ReportExtendedLUNdata *physdev_list = NULL;
4011 struct ReportLUNdata *logdev_list = NULL;
4012 struct bmic_identify_physical_device *id_phys = NULL;
4013 struct bmic_identify_controller *id_ctlr = NULL;
4016 u32 nlocal_logicals = 0;
4017 u32 ndev_allocated = 0;
4018 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
4020 int i, n_ext_target_devs, ndevs_to_allocate;
4021 int raid_ctlr_position;
4022 bool physical_device;
4023 DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS);
4025 currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_DEVICES, GFP_KERNEL);
4026 physdev_list = kzalloc(sizeof(*physdev_list), GFP_KERNEL);
4027 logdev_list = kzalloc(sizeof(*logdev_list), GFP_KERNEL);
4028 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL);
4029 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
4030 id_ctlr = kzalloc(sizeof(*id_ctlr), GFP_KERNEL);
4032 if (!currentsd || !physdev_list || !logdev_list ||
4033 !tmpdevice || !id_phys || !id_ctlr) {
4034 dev_err(&h->pdev->dev, "out of memory\n");
4037 memset(lunzerobits, 0, sizeof(lunzerobits));
4039 h->drv_req_rescan = 0; /* cancel scheduled rescan - we're doing it. */
4041 if (hpsa_gather_lun_info(h, physdev_list, &nphysicals,
4042 logdev_list, &nlogicals)) {
4043 h->drv_req_rescan = 1;
4047 /* Set number of local logicals (non PTRAID) */
4048 if (hpsa_set_local_logical_count(h, id_ctlr, &nlocal_logicals)) {
4049 dev_warn(&h->pdev->dev,
4050 "%s: Can't determine number of local logical devices.\n",
4054 /* We might see up to the maximum number of logical and physical disks
4055 * plus external target devices, and a device for the local RAID
4058 ndevs_to_allocate = nphysicals + nlogicals + MAX_EXT_TARGETS + 1;
4060 /* Allocate the per device structures */
4061 for (i = 0; i < ndevs_to_allocate; i++) {
4062 if (i >= HPSA_MAX_DEVICES) {
4063 dev_warn(&h->pdev->dev, "maximum devices (%d) exceeded."
4064 " %d devices ignored.\n", HPSA_MAX_DEVICES,
4065 ndevs_to_allocate - HPSA_MAX_DEVICES);
4069 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL);
4070 if (!currentsd[i]) {
4071 dev_warn(&h->pdev->dev, "out of memory at %s:%d\n",
4072 __FILE__, __LINE__);
4073 h->drv_req_rescan = 1;
4079 if (is_scsi_rev_5(h))
4080 raid_ctlr_position = 0;
4082 raid_ctlr_position = nphysicals + nlogicals;
4084 /* adjust our table of devices */
4085 n_ext_target_devs = 0;
4086 for (i = 0; i < nphysicals + nlogicals + 1; i++) {
4087 u8 *lunaddrbytes, is_OBDR = 0;
4089 int phys_dev_index = i - (raid_ctlr_position == 0);
4090 bool skip_device = false;
4092 physical_device = i < nphysicals + (raid_ctlr_position == 0);
4094 /* Figure out where the LUN ID info is coming from */
4095 lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position,
4096 i, nphysicals, nlogicals, physdev_list, logdev_list);
4099 * Skip over some devices such as a spare.
4101 if (!tmpdevice->external && physical_device) {
4102 skip_device = hpsa_skip_device(h, lunaddrbytes,
4103 &physdev_list->LUN[phys_dev_index]);
4108 /* Get device type, vendor, model, device id */
4109 rc = hpsa_update_device_info(h, lunaddrbytes, tmpdevice,
4111 if (rc == -ENOMEM) {
4112 dev_warn(&h->pdev->dev,
4113 "Out of memory, rescan deferred.\n");
4114 h->drv_req_rescan = 1;
4118 dev_warn(&h->pdev->dev,
4119 "Inquiry failed, skipping device.\n");
4123 /* Determine if this is a lun from an external target array */
4124 tmpdevice->external =
4125 figure_external_status(h, raid_ctlr_position, i,
4126 nphysicals, nlocal_logicals);
4128 figure_bus_target_lun(h, lunaddrbytes, tmpdevice);
4129 hpsa_update_device_supports_aborts(h, tmpdevice, lunaddrbytes);
4130 this_device = currentsd[ncurrent];
4132 /* Turn on discovery_polling if there are ext target devices.
4133 * Event-based change notification is unreliable for those.
4135 if (!h->discovery_polling) {
4136 if (tmpdevice->external) {
4137 h->discovery_polling = 1;
4138 dev_info(&h->pdev->dev,
4139 "External target, activate discovery polling.\n");
4144 *this_device = *tmpdevice;
4145 this_device->physical_device = physical_device;
4148 * Expose all devices except for physical devices that
4151 if (MASKED_DEVICE(lunaddrbytes) && this_device->physical_device)
4152 this_device->expose_device = 0;
4154 this_device->expose_device = 1;
4158 * Get the SAS address for physical devices that are exposed.
4160 if (this_device->physical_device && this_device->expose_device)
4161 hpsa_get_sas_address(h, lunaddrbytes, this_device);
4163 switch (this_device->devtype) {
4165 /* We don't *really* support actual CD-ROM devices,
4166 * just "One Button Disaster Recovery" tape drive
4167 * which temporarily pretends to be a CD-ROM drive.
4168 * So we check that the device is really an OBDR tape
4169 * device by checking for "$DR-10" in bytes 43-48 of
4176 if (this_device->physical_device) {
4177 /* The disk is in HBA mode. */
4178 /* Never use RAID mapper in HBA mode. */
4179 this_device->offload_enabled = 0;
4180 hpsa_get_ioaccel_drive_info(h, this_device,
4181 physdev_list, phys_dev_index, id_phys);
4182 hpsa_get_path_info(this_device,
4183 physdev_list, phys_dev_index, id_phys);
4188 case TYPE_MEDIUM_CHANGER:
4189 case TYPE_ENCLOSURE:
4193 /* Only present the Smartarray HBA as a RAID controller.
4194 * If it's a RAID controller other than the HBA itself
4195 * (an external RAID controller, MSA500 or similar)
4198 if (!is_hba_lunid(lunaddrbytes))
4205 if (ncurrent >= HPSA_MAX_DEVICES)
4209 if (h->sas_host == NULL) {
4212 rc = hpsa_add_sas_host(h);
4214 dev_warn(&h->pdev->dev,
4215 "Could not add sas host %d\n", rc);
4220 adjust_hpsa_scsi_table(h, currentsd, ncurrent);
4223 for (i = 0; i < ndev_allocated; i++)
4224 kfree(currentsd[i]);
4226 kfree(physdev_list);
4232 static void hpsa_set_sg_descriptor(struct SGDescriptor *desc,
4233 struct scatterlist *sg)
4235 u64 addr64 = (u64) sg_dma_address(sg);
4236 unsigned int len = sg_dma_len(sg);
4238 desc->Addr = cpu_to_le64(addr64);
4239 desc->Len = cpu_to_le32(len);
4244 * hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
4245 * dma mapping and fills in the scatter gather entries of the
4248 static int hpsa_scatter_gather(struct ctlr_info *h,
4249 struct CommandList *cp,
4250 struct scsi_cmnd *cmd)
4252 struct scatterlist *sg;
4253 int use_sg, i, sg_limit, chained, last_sg;
4254 struct SGDescriptor *curr_sg;
4256 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
4258 use_sg = scsi_dma_map(cmd);
4263 goto sglist_finished;
4266 * If the number of entries is greater than the max for a single list,
4267 * then we have a chained list; we will set up all but one entry in the
4268 * first list (the last entry is saved for link information);
4269 * otherwise, we don't have a chained list and we'll set up at each of
4270 * the entries in the one list.
4273 chained = use_sg > h->max_cmd_sg_entries;
4274 sg_limit = chained ? h->max_cmd_sg_entries - 1 : use_sg;
4275 last_sg = scsi_sg_count(cmd) - 1;
4276 scsi_for_each_sg(cmd, sg, sg_limit, i) {
4277 hpsa_set_sg_descriptor(curr_sg, sg);
4283 * Continue with the chained list. Set curr_sg to the chained
4284 * list. Modify the limit to the total count less the entries
4285 * we've already set up. Resume the scan at the list entry
4286 * where the previous loop left off.
4288 curr_sg = h->cmd_sg_list[cp->cmdindex];
4289 sg_limit = use_sg - sg_limit;
4290 for_each_sg(sg, sg, sg_limit, i) {
4291 hpsa_set_sg_descriptor(curr_sg, sg);
4296 /* Back the pointer up to the last entry and mark it as "last". */
4297 (curr_sg - 1)->Ext = cpu_to_le32(HPSA_SG_LAST);
4299 if (use_sg + chained > h->maxSG)
4300 h->maxSG = use_sg + chained;
4303 cp->Header.SGList = h->max_cmd_sg_entries;
4304 cp->Header.SGTotal = cpu_to_le16(use_sg + 1);
4305 if (hpsa_map_sg_chain_block(h, cp)) {
4306 scsi_dma_unmap(cmd);
4314 cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */
4315 cp->Header.SGTotal = cpu_to_le16(use_sg); /* total sgs in cmd list */
4319 #define IO_ACCEL_INELIGIBLE (1)
4320 static int fixup_ioaccel_cdb(u8 *cdb, int *cdb_len)
4326 /* Perform some CDB fixups if needed using 10 byte reads/writes only */
4333 if (*cdb_len == 6) {
4334 block = get_unaligned_be16(&cdb[2]);
4339 BUG_ON(*cdb_len != 12);
4340 block = get_unaligned_be32(&cdb[2]);
4341 block_cnt = get_unaligned_be32(&cdb[6]);
4343 if (block_cnt > 0xffff)
4344 return IO_ACCEL_INELIGIBLE;
4346 cdb[0] = is_write ? WRITE_10 : READ_10;
4348 cdb[2] = (u8) (block >> 24);
4349 cdb[3] = (u8) (block >> 16);
4350 cdb[4] = (u8) (block >> 8);
4351 cdb[5] = (u8) (block);
4353 cdb[7] = (u8) (block_cnt >> 8);
4354 cdb[8] = (u8) (block_cnt);
4362 static int hpsa_scsi_ioaccel1_queue_command(struct ctlr_info *h,
4363 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4364 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4366 struct scsi_cmnd *cmd = c->scsi_cmd;
4367 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
4369 unsigned int total_len = 0;
4370 struct scatterlist *sg;
4373 struct SGDescriptor *curr_sg;
4374 u32 control = IOACCEL1_CONTROL_SIMPLEQUEUE;
4376 /* TODO: implement chaining support */
4377 if (scsi_sg_count(cmd) > h->ioaccel_maxsg) {
4378 atomic_dec(&phys_disk->ioaccel_cmds_out);
4379 return IO_ACCEL_INELIGIBLE;
4382 BUG_ON(cmd->cmd_len > IOACCEL1_IOFLAGS_CDBLEN_MAX);
4384 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4385 atomic_dec(&phys_disk->ioaccel_cmds_out);
4386 return IO_ACCEL_INELIGIBLE;
4389 c->cmd_type = CMD_IOACCEL1;
4391 /* Adjust the DMA address to point to the accelerated command buffer */
4392 c->busaddr = (u32) h->ioaccel_cmd_pool_dhandle +
4393 (c->cmdindex * sizeof(*cp));
4394 BUG_ON(c->busaddr & 0x0000007F);
4396 use_sg = scsi_dma_map(cmd);
4398 atomic_dec(&phys_disk->ioaccel_cmds_out);
4404 scsi_for_each_sg(cmd, sg, use_sg, i) {
4405 addr64 = (u64) sg_dma_address(sg);
4406 len = sg_dma_len(sg);
4408 curr_sg->Addr = cpu_to_le64(addr64);
4409 curr_sg->Len = cpu_to_le32(len);
4410 curr_sg->Ext = cpu_to_le32(0);
4413 (--curr_sg)->Ext = cpu_to_le32(HPSA_SG_LAST);
4415 switch (cmd->sc_data_direction) {
4417 control |= IOACCEL1_CONTROL_DATA_OUT;
4419 case DMA_FROM_DEVICE:
4420 control |= IOACCEL1_CONTROL_DATA_IN;
4423 control |= IOACCEL1_CONTROL_NODATAXFER;
4426 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4427 cmd->sc_data_direction);
4432 control |= IOACCEL1_CONTROL_NODATAXFER;
4435 c->Header.SGList = use_sg;
4436 /* Fill out the command structure to submit */
4437 cp->dev_handle = cpu_to_le16(ioaccel_handle & 0xFFFF);
4438 cp->transfer_len = cpu_to_le32(total_len);
4439 cp->io_flags = cpu_to_le16(IOACCEL1_IOFLAGS_IO_REQ |
4440 (cdb_len & IOACCEL1_IOFLAGS_CDBLEN_MASK));
4441 cp->control = cpu_to_le32(control);
4442 memcpy(cp->CDB, cdb, cdb_len);
4443 memcpy(cp->CISS_LUN, scsi3addr, 8);
4444 /* Tag was already set at init time. */
4445 enqueue_cmd_and_start_io(h, c);
4450 * Queue a command directly to a device behind the controller using the
4451 * I/O accelerator path.
4453 static int hpsa_scsi_ioaccel_direct_map(struct ctlr_info *h,
4454 struct CommandList *c)
4456 struct scsi_cmnd *cmd = c->scsi_cmd;
4457 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4461 return hpsa_scsi_ioaccel_queue_command(h, c, dev->ioaccel_handle,
4462 cmd->cmnd, cmd->cmd_len, dev->scsi3addr, dev);
4466 * Set encryption parameters for the ioaccel2 request
4468 static void set_encrypt_ioaccel2(struct ctlr_info *h,
4469 struct CommandList *c, struct io_accel2_cmd *cp)
4471 struct scsi_cmnd *cmd = c->scsi_cmd;
4472 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4473 struct raid_map_data *map = &dev->raid_map;
4476 /* Are we doing encryption on this device */
4477 if (!(le16_to_cpu(map->flags) & RAID_MAP_FLAG_ENCRYPT_ON))
4479 /* Set the data encryption key index. */
4480 cp->dekindex = map->dekindex;
4482 /* Set the encryption enable flag, encoded into direction field. */
4483 cp->direction |= IOACCEL2_DIRECTION_ENCRYPT_MASK;
4485 /* Set encryption tweak values based on logical block address
4486 * If block size is 512, tweak value is LBA.
4487 * For other block sizes, tweak is (LBA * block size)/ 512)
4489 switch (cmd->cmnd[0]) {
4490 /* Required? 6-byte cdbs eliminated by fixup_ioaccel_cdb */
4493 first_block = get_unaligned_be16(&cmd->cmnd[2]);
4497 /* Required? 12-byte cdbs eliminated by fixup_ioaccel_cdb */
4500 first_block = get_unaligned_be32(&cmd->cmnd[2]);
4504 first_block = get_unaligned_be64(&cmd->cmnd[2]);
4507 dev_err(&h->pdev->dev,
4508 "ERROR: %s: size (0x%x) not supported for encryption\n",
4509 __func__, cmd->cmnd[0]);
4514 if (le32_to_cpu(map->volume_blk_size) != 512)
4515 first_block = first_block *
4516 le32_to_cpu(map->volume_blk_size)/512;
4518 cp->tweak_lower = cpu_to_le32(first_block);
4519 cp->tweak_upper = cpu_to_le32(first_block >> 32);
4522 static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h,
4523 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4524 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4526 struct scsi_cmnd *cmd = c->scsi_cmd;
4527 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
4528 struct ioaccel2_sg_element *curr_sg;
4530 struct scatterlist *sg;
4535 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
4537 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4538 atomic_dec(&phys_disk->ioaccel_cmds_out);
4539 return IO_ACCEL_INELIGIBLE;
4542 c->cmd_type = CMD_IOACCEL2;
4543 /* Adjust the DMA address to point to the accelerated command buffer */
4544 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
4545 (c->cmdindex * sizeof(*cp));
4546 BUG_ON(c->busaddr & 0x0000007F);
4548 memset(cp, 0, sizeof(*cp));
4549 cp->IU_type = IOACCEL2_IU_TYPE;
4551 use_sg = scsi_dma_map(cmd);
4553 atomic_dec(&phys_disk->ioaccel_cmds_out);
4559 if (use_sg > h->ioaccel_maxsg) {
4560 addr64 = le64_to_cpu(
4561 h->ioaccel2_cmd_sg_list[c->cmdindex]->address);
4562 curr_sg->address = cpu_to_le64(addr64);
4563 curr_sg->length = 0;
4564 curr_sg->reserved[0] = 0;
4565 curr_sg->reserved[1] = 0;
4566 curr_sg->reserved[2] = 0;
4567 curr_sg->chain_indicator = 0x80;
4569 curr_sg = h->ioaccel2_cmd_sg_list[c->cmdindex];
4571 scsi_for_each_sg(cmd, sg, use_sg, i) {
4572 addr64 = (u64) sg_dma_address(sg);
4573 len = sg_dma_len(sg);
4575 curr_sg->address = cpu_to_le64(addr64);
4576 curr_sg->length = cpu_to_le32(len);
4577 curr_sg->reserved[0] = 0;
4578 curr_sg->reserved[1] = 0;
4579 curr_sg->reserved[2] = 0;
4580 curr_sg->chain_indicator = 0;
4584 switch (cmd->sc_data_direction) {
4586 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4587 cp->direction |= IOACCEL2_DIR_DATA_OUT;
4589 case DMA_FROM_DEVICE:
4590 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4591 cp->direction |= IOACCEL2_DIR_DATA_IN;
4594 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4595 cp->direction |= IOACCEL2_DIR_NO_DATA;
4598 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4599 cmd->sc_data_direction);
4604 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4605 cp->direction |= IOACCEL2_DIR_NO_DATA;
4608 /* Set encryption parameters, if necessary */
4609 set_encrypt_ioaccel2(h, c, cp);
4611 cp->scsi_nexus = cpu_to_le32(ioaccel_handle);
4612 cp->Tag = cpu_to_le32(c->cmdindex << DIRECT_LOOKUP_SHIFT);
4613 memcpy(cp->cdb, cdb, sizeof(cp->cdb));
4615 cp->data_len = cpu_to_le32(total_len);
4616 cp->err_ptr = cpu_to_le64(c->busaddr +
4617 offsetof(struct io_accel2_cmd, error_data));
4618 cp->err_len = cpu_to_le32(sizeof(cp->error_data));
4620 /* fill in sg elements */
4621 if (use_sg > h->ioaccel_maxsg) {
4623 cp->sg[0].length = cpu_to_le32(use_sg * sizeof(cp->sg[0]));
4624 if (hpsa_map_ioaccel2_sg_chain_block(h, cp, c)) {
4625 atomic_dec(&phys_disk->ioaccel_cmds_out);
4626 scsi_dma_unmap(cmd);
4630 cp->sg_count = (u8) use_sg;
4632 enqueue_cmd_and_start_io(h, c);
4637 * Queue a command to the correct I/O accelerator path.
4639 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
4640 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4641 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4643 /* Try to honor the device's queue depth */
4644 if (atomic_inc_return(&phys_disk->ioaccel_cmds_out) >
4645 phys_disk->queue_depth) {
4646 atomic_dec(&phys_disk->ioaccel_cmds_out);
4647 return IO_ACCEL_INELIGIBLE;
4649 if (h->transMethod & CFGTBL_Trans_io_accel1)
4650 return hpsa_scsi_ioaccel1_queue_command(h, c, ioaccel_handle,
4651 cdb, cdb_len, scsi3addr,
4654 return hpsa_scsi_ioaccel2_queue_command(h, c, ioaccel_handle,
4655 cdb, cdb_len, scsi3addr,
4659 static void raid_map_helper(struct raid_map_data *map,
4660 int offload_to_mirror, u32 *map_index, u32 *current_group)
4662 if (offload_to_mirror == 0) {
4663 /* use physical disk in the first mirrored group. */
4664 *map_index %= le16_to_cpu(map->data_disks_per_row);
4668 /* determine mirror group that *map_index indicates */
4669 *current_group = *map_index /
4670 le16_to_cpu(map->data_disks_per_row);
4671 if (offload_to_mirror == *current_group)
4673 if (*current_group < le16_to_cpu(map->layout_map_count) - 1) {
4674 /* select map index from next group */
4675 *map_index += le16_to_cpu(map->data_disks_per_row);
4678 /* select map index from first group */
4679 *map_index %= le16_to_cpu(map->data_disks_per_row);
4682 } while (offload_to_mirror != *current_group);
4686 * Attempt to perform offload RAID mapping for a logical volume I/O.
4688 static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h,
4689 struct CommandList *c)
4691 struct scsi_cmnd *cmd = c->scsi_cmd;
4692 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4693 struct raid_map_data *map = &dev->raid_map;
4694 struct raid_map_disk_data *dd = &map->data[0];
4697 u64 first_block, last_block;
4700 u64 first_row, last_row;
4701 u32 first_row_offset, last_row_offset;
4702 u32 first_column, last_column;
4703 u64 r0_first_row, r0_last_row;
4704 u32 r5or6_blocks_per_row;
4705 u64 r5or6_first_row, r5or6_last_row;
4706 u32 r5or6_first_row_offset, r5or6_last_row_offset;
4707 u32 r5or6_first_column, r5or6_last_column;
4708 u32 total_disks_per_row;
4710 u32 first_group, last_group, current_group;
4718 #if BITS_PER_LONG == 32
4721 int offload_to_mirror;
4723 /* check for valid opcode, get LBA and block count */
4724 switch (cmd->cmnd[0]) {
4728 first_block = get_unaligned_be16(&cmd->cmnd[2]);
4729 block_cnt = cmd->cmnd[4];
4737 (((u64) cmd->cmnd[2]) << 24) |
4738 (((u64) cmd->cmnd[3]) << 16) |
4739 (((u64) cmd->cmnd[4]) << 8) |
4742 (((u32) cmd->cmnd[7]) << 8) |
4749 (((u64) cmd->cmnd[2]) << 24) |
4750 (((u64) cmd->cmnd[3]) << 16) |
4751 (((u64) cmd->cmnd[4]) << 8) |
4754 (((u32) cmd->cmnd[6]) << 24) |
4755 (((u32) cmd->cmnd[7]) << 16) |
4756 (((u32) cmd->cmnd[8]) << 8) |
4763 (((u64) cmd->cmnd[2]) << 56) |
4764 (((u64) cmd->cmnd[3]) << 48) |
4765 (((u64) cmd->cmnd[4]) << 40) |
4766 (((u64) cmd->cmnd[5]) << 32) |
4767 (((u64) cmd->cmnd[6]) << 24) |
4768 (((u64) cmd->cmnd[7]) << 16) |
4769 (((u64) cmd->cmnd[8]) << 8) |
4772 (((u32) cmd->cmnd[10]) << 24) |
4773 (((u32) cmd->cmnd[11]) << 16) |
4774 (((u32) cmd->cmnd[12]) << 8) |
4778 return IO_ACCEL_INELIGIBLE; /* process via normal I/O path */
4780 last_block = first_block + block_cnt - 1;
4782 /* check for write to non-RAID-0 */
4783 if (is_write && dev->raid_level != 0)
4784 return IO_ACCEL_INELIGIBLE;
4786 /* check for invalid block or wraparound */
4787 if (last_block >= le64_to_cpu(map->volume_blk_cnt) ||
4788 last_block < first_block)
4789 return IO_ACCEL_INELIGIBLE;
4791 /* calculate stripe information for the request */
4792 blocks_per_row = le16_to_cpu(map->data_disks_per_row) *
4793 le16_to_cpu(map->strip_size);
4794 strip_size = le16_to_cpu(map->strip_size);
4795 #if BITS_PER_LONG == 32
4796 tmpdiv = first_block;
4797 (void) do_div(tmpdiv, blocks_per_row);
4799 tmpdiv = last_block;
4800 (void) do_div(tmpdiv, blocks_per_row);
4802 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
4803 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
4804 tmpdiv = first_row_offset;
4805 (void) do_div(tmpdiv, strip_size);
4806 first_column = tmpdiv;
4807 tmpdiv = last_row_offset;
4808 (void) do_div(tmpdiv, strip_size);
4809 last_column = tmpdiv;
4811 first_row = first_block / blocks_per_row;
4812 last_row = last_block / blocks_per_row;
4813 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
4814 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
4815 first_column = first_row_offset / strip_size;
4816 last_column = last_row_offset / strip_size;
4819 /* if this isn't a single row/column then give to the controller */
4820 if ((first_row != last_row) || (first_column != last_column))
4821 return IO_ACCEL_INELIGIBLE;
4823 /* proceeding with driver mapping */
4824 total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
4825 le16_to_cpu(map->metadata_disks_per_row);
4826 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
4827 le16_to_cpu(map->row_cnt);
4828 map_index = (map_row * total_disks_per_row) + first_column;
4830 switch (dev->raid_level) {
4832 break; /* nothing special to do */
4834 /* Handles load balance across RAID 1 members.
4835 * (2-drive R1 and R10 with even # of drives.)
4836 * Appropriate for SSDs, not optimal for HDDs
4838 BUG_ON(le16_to_cpu(map->layout_map_count) != 2);
4839 if (dev->offload_to_mirror)
4840 map_index += le16_to_cpu(map->data_disks_per_row);
4841 dev->offload_to_mirror = !dev->offload_to_mirror;
4844 /* Handles N-way mirrors (R1-ADM)
4845 * and R10 with # of drives divisible by 3.)
4847 BUG_ON(le16_to_cpu(map->layout_map_count) != 3);
4849 offload_to_mirror = dev->offload_to_mirror;
4850 raid_map_helper(map, offload_to_mirror,
4851 &map_index, ¤t_group);
4852 /* set mirror group to use next time */
4854 (offload_to_mirror >=
4855 le16_to_cpu(map->layout_map_count) - 1)
4856 ? 0 : offload_to_mirror + 1;
4857 dev->offload_to_mirror = offload_to_mirror;
4858 /* Avoid direct use of dev->offload_to_mirror within this
4859 * function since multiple threads might simultaneously
4860 * increment it beyond the range of dev->layout_map_count -1.
4865 if (le16_to_cpu(map->layout_map_count) <= 1)
4868 /* Verify first and last block are in same RAID group */
4869 r5or6_blocks_per_row =
4870 le16_to_cpu(map->strip_size) *
4871 le16_to_cpu(map->data_disks_per_row);
4872 BUG_ON(r5or6_blocks_per_row == 0);
4873 stripesize = r5or6_blocks_per_row *
4874 le16_to_cpu(map->layout_map_count);
4875 #if BITS_PER_LONG == 32
4876 tmpdiv = first_block;
4877 first_group = do_div(tmpdiv, stripesize);
4878 tmpdiv = first_group;
4879 (void) do_div(tmpdiv, r5or6_blocks_per_row);
4880 first_group = tmpdiv;
4881 tmpdiv = last_block;
4882 last_group = do_div(tmpdiv, stripesize);
4883 tmpdiv = last_group;
4884 (void) do_div(tmpdiv, r5or6_blocks_per_row);
4885 last_group = tmpdiv;
4887 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
4888 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
4890 if (first_group != last_group)
4891 return IO_ACCEL_INELIGIBLE;
4893 /* Verify request is in a single row of RAID 5/6 */
4894 #if BITS_PER_LONG == 32
4895 tmpdiv = first_block;
4896 (void) do_div(tmpdiv, stripesize);
4897 first_row = r5or6_first_row = r0_first_row = tmpdiv;
4898 tmpdiv = last_block;
4899 (void) do_div(tmpdiv, stripesize);
4900 r5or6_last_row = r0_last_row = tmpdiv;
4902 first_row = r5or6_first_row = r0_first_row =
4903 first_block / stripesize;
4904 r5or6_last_row = r0_last_row = last_block / stripesize;
4906 if (r5or6_first_row != r5or6_last_row)
4907 return IO_ACCEL_INELIGIBLE;
4910 /* Verify request is in a single column */
4911 #if BITS_PER_LONG == 32
4912 tmpdiv = first_block;
4913 first_row_offset = do_div(tmpdiv, stripesize);
4914 tmpdiv = first_row_offset;
4915 first_row_offset = (u32) do_div(tmpdiv, r5or6_blocks_per_row);
4916 r5or6_first_row_offset = first_row_offset;
4917 tmpdiv = last_block;
4918 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
4919 tmpdiv = r5or6_last_row_offset;
4920 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
4921 tmpdiv = r5or6_first_row_offset;
4922 (void) do_div(tmpdiv, map->strip_size);
4923 first_column = r5or6_first_column = tmpdiv;
4924 tmpdiv = r5or6_last_row_offset;
4925 (void) do_div(tmpdiv, map->strip_size);
4926 r5or6_last_column = tmpdiv;
4928 first_row_offset = r5or6_first_row_offset =
4929 (u32)((first_block % stripesize) %
4930 r5or6_blocks_per_row);
4932 r5or6_last_row_offset =
4933 (u32)((last_block % stripesize) %
4934 r5or6_blocks_per_row);
4936 first_column = r5or6_first_column =
4937 r5or6_first_row_offset / le16_to_cpu(map->strip_size);
4939 r5or6_last_row_offset / le16_to_cpu(map->strip_size);
4941 if (r5or6_first_column != r5or6_last_column)
4942 return IO_ACCEL_INELIGIBLE;
4944 /* Request is eligible */
4945 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
4946 le16_to_cpu(map->row_cnt);
4948 map_index = (first_group *
4949 (le16_to_cpu(map->row_cnt) * total_disks_per_row)) +
4950 (map_row * total_disks_per_row) + first_column;
4953 return IO_ACCEL_INELIGIBLE;
4956 if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES))
4957 return IO_ACCEL_INELIGIBLE;
4959 c->phys_disk = dev->phys_disk[map_index];
4961 disk_handle = dd[map_index].ioaccel_handle;
4962 disk_block = le64_to_cpu(map->disk_starting_blk) +
4963 first_row * le16_to_cpu(map->strip_size) +
4964 (first_row_offset - first_column *
4965 le16_to_cpu(map->strip_size));
4966 disk_block_cnt = block_cnt;
4968 /* handle differing logical/physical block sizes */
4969 if (map->phys_blk_shift) {
4970 disk_block <<= map->phys_blk_shift;
4971 disk_block_cnt <<= map->phys_blk_shift;
4973 BUG_ON(disk_block_cnt > 0xffff);
4975 /* build the new CDB for the physical disk I/O */
4976 if (disk_block > 0xffffffff) {
4977 cdb[0] = is_write ? WRITE_16 : READ_16;
4979 cdb[2] = (u8) (disk_block >> 56);
4980 cdb[3] = (u8) (disk_block >> 48);
4981 cdb[4] = (u8) (disk_block >> 40);
4982 cdb[5] = (u8) (disk_block >> 32);
4983 cdb[6] = (u8) (disk_block >> 24);
4984 cdb[7] = (u8) (disk_block >> 16);
4985 cdb[8] = (u8) (disk_block >> 8);
4986 cdb[9] = (u8) (disk_block);
4987 cdb[10] = (u8) (disk_block_cnt >> 24);
4988 cdb[11] = (u8) (disk_block_cnt >> 16);
4989 cdb[12] = (u8) (disk_block_cnt >> 8);
4990 cdb[13] = (u8) (disk_block_cnt);
4995 cdb[0] = is_write ? WRITE_10 : READ_10;
4997 cdb[2] = (u8) (disk_block >> 24);
4998 cdb[3] = (u8) (disk_block >> 16);
4999 cdb[4] = (u8) (disk_block >> 8);
5000 cdb[5] = (u8) (disk_block);
5002 cdb[7] = (u8) (disk_block_cnt >> 8);
5003 cdb[8] = (u8) (disk_block_cnt);
5007 return hpsa_scsi_ioaccel_queue_command(h, c, disk_handle, cdb, cdb_len,
5009 dev->phys_disk[map_index]);
5013 * Submit commands down the "normal" RAID stack path
5014 * All callers to hpsa_ciss_submit must check lockup_detected
5015 * beforehand, before (opt.) and after calling cmd_alloc
5017 static int hpsa_ciss_submit(struct ctlr_info *h,
5018 struct CommandList *c, struct scsi_cmnd *cmd,
5019 unsigned char scsi3addr[])
5021 cmd->host_scribble = (unsigned char *) c;
5022 c->cmd_type = CMD_SCSI;
5024 c->Header.ReplyQueue = 0; /* unused in simple mode */
5025 memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8);
5026 c->Header.tag = cpu_to_le64((c->cmdindex << DIRECT_LOOKUP_SHIFT));
5028 /* Fill in the request block... */
5030 c->Request.Timeout = 0;
5031 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB));
5032 c->Request.CDBLen = cmd->cmd_len;
5033 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len);
5034 switch (cmd->sc_data_direction) {
5036 c->Request.type_attr_dir =
5037 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_WRITE);
5039 case DMA_FROM_DEVICE:
5040 c->Request.type_attr_dir =
5041 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_READ);
5044 c->Request.type_attr_dir =
5045 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_NONE);
5047 case DMA_BIDIRECTIONAL:
5048 /* This can happen if a buggy application does a scsi passthru
5049 * and sets both inlen and outlen to non-zero. ( see
5050 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
5053 c->Request.type_attr_dir =
5054 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_RSVD);
5055 /* This is technically wrong, and hpsa controllers should
5056 * reject it with CMD_INVALID, which is the most correct
5057 * response, but non-fibre backends appear to let it
5058 * slide by, and give the same results as if this field
5059 * were set correctly. Either way is acceptable for
5060 * our purposes here.
5066 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
5067 cmd->sc_data_direction);
5072 if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */
5073 hpsa_cmd_resolve_and_free(h, c);
5074 return SCSI_MLQUEUE_HOST_BUSY;
5076 enqueue_cmd_and_start_io(h, c);
5077 /* the cmd'll come back via intr handler in complete_scsi_command() */
5081 static void hpsa_cmd_init(struct ctlr_info *h, int index,
5082 struct CommandList *c)
5084 dma_addr_t cmd_dma_handle, err_dma_handle;
5086 /* Zero out all of commandlist except the last field, refcount */
5087 memset(c, 0, offsetof(struct CommandList, refcount));
5088 c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT));
5089 cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
5090 c->err_info = h->errinfo_pool + index;
5091 memset(c->err_info, 0, sizeof(*c->err_info));
5092 err_dma_handle = h->errinfo_pool_dhandle
5093 + index * sizeof(*c->err_info);
5094 c->cmdindex = index;
5095 c->busaddr = (u32) cmd_dma_handle;
5096 c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle);
5097 c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info));
5099 c->scsi_cmd = SCSI_CMD_IDLE;
5102 static void hpsa_preinitialize_commands(struct ctlr_info *h)
5106 for (i = 0; i < h->nr_cmds; i++) {
5107 struct CommandList *c = h->cmd_pool + i;
5109 hpsa_cmd_init(h, i, c);
5110 atomic_set(&c->refcount, 0);
5114 static inline void hpsa_cmd_partial_init(struct ctlr_info *h, int index,
5115 struct CommandList *c)
5117 dma_addr_t cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
5119 BUG_ON(c->cmdindex != index);
5121 memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
5122 memset(c->err_info, 0, sizeof(*c->err_info));
5123 c->busaddr = (u32) cmd_dma_handle;
5126 static int hpsa_ioaccel_submit(struct ctlr_info *h,
5127 struct CommandList *c, struct scsi_cmnd *cmd,
5128 unsigned char *scsi3addr)
5130 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
5131 int rc = IO_ACCEL_INELIGIBLE;
5133 cmd->host_scribble = (unsigned char *) c;
5135 if (dev->offload_enabled) {
5136 hpsa_cmd_init(h, c->cmdindex, c);
5137 c->cmd_type = CMD_SCSI;
5139 rc = hpsa_scsi_ioaccel_raid_map(h, c);
5140 if (rc < 0) /* scsi_dma_map failed. */
5141 rc = SCSI_MLQUEUE_HOST_BUSY;
5142 } else if (dev->hba_ioaccel_enabled) {
5143 hpsa_cmd_init(h, c->cmdindex, c);
5144 c->cmd_type = CMD_SCSI;
5146 rc = hpsa_scsi_ioaccel_direct_map(h, c);
5147 if (rc < 0) /* scsi_dma_map failed. */
5148 rc = SCSI_MLQUEUE_HOST_BUSY;
5153 static void hpsa_command_resubmit_worker(struct work_struct *work)
5155 struct scsi_cmnd *cmd;
5156 struct hpsa_scsi_dev_t *dev;
5157 struct CommandList *c = container_of(work, struct CommandList, work);
5160 dev = cmd->device->hostdata;
5162 cmd->result = DID_NO_CONNECT << 16;
5163 return hpsa_cmd_free_and_done(c->h, c, cmd);
5165 if (c->reset_pending)
5166 return hpsa_cmd_resolve_and_free(c->h, c);
5167 if (c->abort_pending)
5168 return hpsa_cmd_abort_and_free(c->h, c, cmd);
5169 if (c->cmd_type == CMD_IOACCEL2) {
5170 struct ctlr_info *h = c->h;
5171 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
5174 if (c2->error_data.serv_response ==
5175 IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL) {
5176 rc = hpsa_ioaccel_submit(h, c, cmd, dev->scsi3addr);
5179 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
5181 * If we get here, it means dma mapping failed.
5182 * Try again via scsi mid layer, which will
5183 * then get SCSI_MLQUEUE_HOST_BUSY.
5185 cmd->result = DID_IMM_RETRY << 16;
5186 return hpsa_cmd_free_and_done(h, c, cmd);
5188 /* else, fall thru and resubmit down CISS path */
5191 hpsa_cmd_partial_init(c->h, c->cmdindex, c);
5192 if (hpsa_ciss_submit(c->h, c, cmd, dev->scsi3addr)) {
5194 * If we get here, it means dma mapping failed. Try
5195 * again via scsi mid layer, which will then get
5196 * SCSI_MLQUEUE_HOST_BUSY.
5198 * hpsa_ciss_submit will have already freed c
5199 * if it encountered a dma mapping failure.
5201 cmd->result = DID_IMM_RETRY << 16;
5202 cmd->scsi_done(cmd);
5206 /* Running in struct Scsi_Host->host_lock less mode */
5207 static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
5209 struct ctlr_info *h;
5210 struct hpsa_scsi_dev_t *dev;
5211 unsigned char scsi3addr[8];
5212 struct CommandList *c;
5215 /* Get the ptr to our adapter structure out of cmd->host. */
5216 h = sdev_to_hba(cmd->device);
5218 BUG_ON(cmd->request->tag < 0);
5220 dev = cmd->device->hostdata;
5222 cmd->result = DID_NO_CONNECT << 16;
5223 cmd->scsi_done(cmd);
5227 memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr));
5229 if (unlikely(lockup_detected(h))) {
5230 cmd->result = DID_NO_CONNECT << 16;
5231 cmd->scsi_done(cmd);
5234 c = cmd_tagged_alloc(h, cmd);
5237 * Call alternate submit routine for I/O accelerated commands.
5238 * Retries always go down the normal I/O path.
5240 if (likely(cmd->retries == 0 &&
5241 cmd->request->cmd_type == REQ_TYPE_FS &&
5242 h->acciopath_status)) {
5243 rc = hpsa_ioaccel_submit(h, c, cmd, scsi3addr);
5246 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
5247 hpsa_cmd_resolve_and_free(h, c);
5248 return SCSI_MLQUEUE_HOST_BUSY;
5251 return hpsa_ciss_submit(h, c, cmd, scsi3addr);
5254 static void hpsa_scan_complete(struct ctlr_info *h)
5256 unsigned long flags;
5258 spin_lock_irqsave(&h->scan_lock, flags);
5259 h->scan_finished = 1;
5260 wake_up_all(&h->scan_wait_queue);
5261 spin_unlock_irqrestore(&h->scan_lock, flags);
5264 static void hpsa_scan_start(struct Scsi_Host *sh)
5266 struct ctlr_info *h = shost_to_hba(sh);
5267 unsigned long flags;
5270 * Don't let rescans be initiated on a controller known to be locked
5271 * up. If the controller locks up *during* a rescan, that thread is
5272 * probably hosed, but at least we can prevent new rescan threads from
5273 * piling up on a locked up controller.
5275 if (unlikely(lockup_detected(h)))
5276 return hpsa_scan_complete(h);
5278 /* wait until any scan already in progress is finished. */
5280 spin_lock_irqsave(&h->scan_lock, flags);
5281 if (h->scan_finished)
5283 spin_unlock_irqrestore(&h->scan_lock, flags);
5284 wait_event(h->scan_wait_queue, h->scan_finished);
5285 /* Note: We don't need to worry about a race between this
5286 * thread and driver unload because the midlayer will
5287 * have incremented the reference count, so unload won't
5288 * happen if we're in here.
5291 h->scan_finished = 0; /* mark scan as in progress */
5292 spin_unlock_irqrestore(&h->scan_lock, flags);
5294 if (unlikely(lockup_detected(h)))
5295 return hpsa_scan_complete(h);
5297 hpsa_update_scsi_devices(h);
5299 hpsa_scan_complete(h);
5302 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth)
5304 struct hpsa_scsi_dev_t *logical_drive = sdev->hostdata;
5311 else if (qdepth > logical_drive->queue_depth)
5312 qdepth = logical_drive->queue_depth;
5314 return scsi_change_queue_depth(sdev, qdepth);
5317 static int hpsa_scan_finished(struct Scsi_Host *sh,
5318 unsigned long elapsed_time)
5320 struct ctlr_info *h = shost_to_hba(sh);
5321 unsigned long flags;
5324 spin_lock_irqsave(&h->scan_lock, flags);
5325 finished = h->scan_finished;
5326 spin_unlock_irqrestore(&h->scan_lock, flags);
5330 static int hpsa_scsi_host_alloc(struct ctlr_info *h)
5332 struct Scsi_Host *sh;
5334 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h));
5336 dev_err(&h->pdev->dev, "scsi_host_alloc failed\n");
5343 sh->max_channel = 3;
5344 sh->max_cmd_len = MAX_COMMAND_SIZE;
5345 sh->max_lun = HPSA_MAX_LUN;
5346 sh->max_id = HPSA_MAX_LUN;
5347 sh->can_queue = h->nr_cmds - HPSA_NRESERVED_CMDS;
5348 sh->cmd_per_lun = sh->can_queue;
5349 sh->sg_tablesize = h->maxsgentries;
5350 sh->transportt = hpsa_sas_transport_template;
5351 sh->hostdata[0] = (unsigned long) h;
5352 sh->irq = h->intr[h->intr_mode];
5353 sh->unique_id = sh->irq;
5359 static int hpsa_scsi_add_host(struct ctlr_info *h)
5363 rv = scsi_add_host(h->scsi_host, &h->pdev->dev);
5365 dev_err(&h->pdev->dev, "scsi_add_host failed\n");
5368 scsi_scan_host(h->scsi_host);
5373 * The block layer has already gone to the trouble of picking out a unique,
5374 * small-integer tag for this request. We use an offset from that value as
5375 * an index to select our command block. (The offset allows us to reserve the
5376 * low-numbered entries for our own uses.)
5378 static int hpsa_get_cmd_index(struct scsi_cmnd *scmd)
5380 int idx = scmd->request->tag;
5385 /* Offset to leave space for internal cmds. */
5386 return idx += HPSA_NRESERVED_CMDS;
5390 * Send a TEST_UNIT_READY command to the specified LUN using the specified
5391 * reply queue; returns zero if the unit is ready, and non-zero otherwise.
5393 static int hpsa_send_test_unit_ready(struct ctlr_info *h,
5394 struct CommandList *c, unsigned char lunaddr[],
5399 /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */
5400 (void) fill_cmd(c, TEST_UNIT_READY, h,
5401 NULL, 0, 0, lunaddr, TYPE_CMD);
5402 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
5405 /* no unmap needed here because no data xfer. */
5407 /* Check if the unit is already ready. */
5408 if (c->err_info->CommandStatus == CMD_SUCCESS)
5412 * The first command sent after reset will receive "unit attention" to
5413 * indicate that the LUN has been reset...this is actually what we're
5414 * looking for (but, success is good too).
5416 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
5417 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
5418 (c->err_info->SenseInfo[2] == NO_SENSE ||
5419 c->err_info->SenseInfo[2] == UNIT_ATTENTION))
5426 * Wait for a TEST_UNIT_READY command to complete, retrying as necessary;
5427 * returns zero when the unit is ready, and non-zero when giving up.
5429 static int hpsa_wait_for_test_unit_ready(struct ctlr_info *h,
5430 struct CommandList *c,
5431 unsigned char lunaddr[], int reply_queue)
5435 int waittime = 1; /* seconds */
5437 /* Send test unit ready until device ready, or give up. */
5438 for (count = 0; count < HPSA_TUR_RETRY_LIMIT; count++) {
5441 * Wait for a bit. do this first, because if we send
5442 * the TUR right away, the reset will just abort it.
5444 msleep(1000 * waittime);
5446 rc = hpsa_send_test_unit_ready(h, c, lunaddr, reply_queue);
5450 /* Increase wait time with each try, up to a point. */
5451 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS)
5454 dev_warn(&h->pdev->dev,
5455 "waiting %d secs for device to become ready.\n",
5462 static int wait_for_device_to_become_ready(struct ctlr_info *h,
5463 unsigned char lunaddr[],
5470 struct CommandList *c;
5475 * If no specific reply queue was requested, then send the TUR
5476 * repeatedly, requesting a reply on each reply queue; otherwise execute
5477 * the loop exactly once using only the specified queue.
5479 if (reply_queue == DEFAULT_REPLY_QUEUE) {
5481 last_queue = h->nreply_queues - 1;
5483 first_queue = reply_queue;
5484 last_queue = reply_queue;
5487 for (rq = first_queue; rq <= last_queue; rq++) {
5488 rc = hpsa_wait_for_test_unit_ready(h, c, lunaddr, rq);
5494 dev_warn(&h->pdev->dev, "giving up on device.\n");
5496 dev_warn(&h->pdev->dev, "device is ready.\n");
5502 /* Need at least one of these error handlers to keep ../scsi/hosts.c from
5503 * complaining. Doing a host- or bus-reset can't do anything good here.
5505 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
5508 struct ctlr_info *h;
5509 struct hpsa_scsi_dev_t *dev;
5513 /* find the controller to which the command to be aborted was sent */
5514 h = sdev_to_hba(scsicmd->device);
5515 if (h == NULL) /* paranoia */
5518 if (lockup_detected(h))
5521 dev = scsicmd->device->hostdata;
5523 dev_err(&h->pdev->dev, "%s: device lookup failed\n", __func__);
5527 /* if controller locked up, we can guarantee command won't complete */
5528 if (lockup_detected(h)) {
5529 snprintf(msg, sizeof(msg),
5530 "cmd %d RESET FAILED, lockup detected",
5531 hpsa_get_cmd_index(scsicmd));
5532 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5536 /* this reset request might be the result of a lockup; check */
5537 if (detect_controller_lockup(h)) {
5538 snprintf(msg, sizeof(msg),
5539 "cmd %d RESET FAILED, new lockup detected",
5540 hpsa_get_cmd_index(scsicmd));
5541 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5545 /* Do not attempt on controller */
5546 if (is_hba_lunid(dev->scsi3addr))
5549 if (is_logical_dev_addr_mode(dev->scsi3addr))
5550 reset_type = HPSA_DEVICE_RESET_MSG;
5552 reset_type = HPSA_PHYS_TARGET_RESET;
5554 sprintf(msg, "resetting %s",
5555 reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ");
5556 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5558 h->reset_in_progress = 1;
5560 /* send a reset to the SCSI LUN which the command was sent to */
5561 rc = hpsa_do_reset(h, dev, dev->scsi3addr, reset_type,
5562 DEFAULT_REPLY_QUEUE);
5563 sprintf(msg, "reset %s %s",
5564 reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ",
5565 rc == 0 ? "completed successfully" : "failed");
5566 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5567 h->reset_in_progress = 0;
5568 return rc == 0 ? SUCCESS : FAILED;
5571 static void swizzle_abort_tag(u8 *tag)
5575 memcpy(original_tag, tag, 8);
5576 tag[0] = original_tag[3];
5577 tag[1] = original_tag[2];
5578 tag[2] = original_tag[1];
5579 tag[3] = original_tag[0];
5580 tag[4] = original_tag[7];
5581 tag[5] = original_tag[6];
5582 tag[6] = original_tag[5];
5583 tag[7] = original_tag[4];
5586 static void hpsa_get_tag(struct ctlr_info *h,
5587 struct CommandList *c, __le32 *taglower, __le32 *tagupper)
5590 if (c->cmd_type == CMD_IOACCEL1) {
5591 struct io_accel1_cmd *cm1 = (struct io_accel1_cmd *)
5592 &h->ioaccel_cmd_pool[c->cmdindex];
5593 tag = le64_to_cpu(cm1->tag);
5594 *tagupper = cpu_to_le32(tag >> 32);
5595 *taglower = cpu_to_le32(tag);
5598 if (c->cmd_type == CMD_IOACCEL2) {
5599 struct io_accel2_cmd *cm2 = (struct io_accel2_cmd *)
5600 &h->ioaccel2_cmd_pool[c->cmdindex];
5601 /* upper tag not used in ioaccel2 mode */
5602 memset(tagupper, 0, sizeof(*tagupper));
5603 *taglower = cm2->Tag;
5606 tag = le64_to_cpu(c->Header.tag);
5607 *tagupper = cpu_to_le32(tag >> 32);
5608 *taglower = cpu_to_le32(tag);
5611 static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr,
5612 struct CommandList *abort, int reply_queue)
5615 struct CommandList *c;
5616 struct ErrorInfo *ei;
5617 __le32 tagupper, taglower;
5621 /* fill_cmd can't fail here, no buffer to map */
5622 (void) fill_cmd(c, HPSA_ABORT_MSG, h, &abort->Header.tag,
5623 0, 0, scsi3addr, TYPE_MSG);
5624 if (h->needs_abort_tags_swizzled)
5625 swizzle_abort_tag(&c->Request.CDB[4]);
5626 (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
5627 hpsa_get_tag(h, abort, &taglower, &tagupper);
5628 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: do_simple_cmd(abort) completed.\n",
5629 __func__, tagupper, taglower);
5630 /* no unmap needed here because no data xfer. */
5633 switch (ei->CommandStatus) {
5636 case CMD_TMF_STATUS:
5637 rc = hpsa_evaluate_tmf_status(h, c);
5639 case CMD_UNABORTABLE: /* Very common, don't make noise. */
5643 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: interpreting error.\n",
5644 __func__, tagupper, taglower);
5645 hpsa_scsi_interpret_error(h, c);
5650 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n",
5651 __func__, tagupper, taglower);
5655 static void setup_ioaccel2_abort_cmd(struct CommandList *c, struct ctlr_info *h,
5656 struct CommandList *command_to_abort, int reply_queue)
5658 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
5659 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
5660 struct io_accel2_cmd *c2a =
5661 &h->ioaccel2_cmd_pool[command_to_abort->cmdindex];
5662 struct scsi_cmnd *scmd = command_to_abort->scsi_cmd;
5663 struct hpsa_scsi_dev_t *dev = scmd->device->hostdata;
5666 * We're overlaying struct hpsa_tmf_struct on top of something which
5667 * was allocated as a struct io_accel2_cmd, so we better be sure it
5668 * actually fits, and doesn't overrun the error info space.
5670 BUILD_BUG_ON(sizeof(struct hpsa_tmf_struct) >
5671 sizeof(struct io_accel2_cmd));
5672 BUG_ON(offsetof(struct io_accel2_cmd, error_data) <
5673 offsetof(struct hpsa_tmf_struct, error_len) +
5674 sizeof(ac->error_len));
5676 c->cmd_type = IOACCEL2_TMF;
5677 c->scsi_cmd = SCSI_CMD_BUSY;
5679 /* Adjust the DMA address to point to the accelerated command buffer */
5680 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
5681 (c->cmdindex * sizeof(struct io_accel2_cmd));
5682 BUG_ON(c->busaddr & 0x0000007F);
5684 memset(ac, 0, sizeof(*c2)); /* yes this is correct */
5685 ac->iu_type = IOACCEL2_IU_TMF_TYPE;
5686 ac->reply_queue = reply_queue;
5687 ac->tmf = IOACCEL2_TMF_ABORT;
5688 ac->it_nexus = cpu_to_le32(dev->ioaccel_handle);
5689 memset(ac->lun_id, 0, sizeof(ac->lun_id));
5690 ac->tag = cpu_to_le64(c->cmdindex << DIRECT_LOOKUP_SHIFT);
5691 ac->abort_tag = cpu_to_le64(le32_to_cpu(c2a->Tag));
5692 ac->error_ptr = cpu_to_le64(c->busaddr +
5693 offsetof(struct io_accel2_cmd, error_data));
5694 ac->error_len = cpu_to_le32(sizeof(c2->error_data));
5697 /* ioaccel2 path firmware cannot handle abort task requests.
5698 * Change abort requests to physical target reset, and send to the
5699 * address of the physical disk used for the ioaccel 2 command.
5700 * Return 0 on success (IO_OK)
5704 static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h,
5705 unsigned char *scsi3addr, struct CommandList *abort, int reply_queue)
5708 struct scsi_cmnd *scmd; /* scsi command within request being aborted */
5709 struct hpsa_scsi_dev_t *dev; /* device to which scsi cmd was sent */
5710 unsigned char phys_scsi3addr[8]; /* addr of phys disk with volume */
5711 unsigned char *psa = &phys_scsi3addr[0];
5713 /* Get a pointer to the hpsa logical device. */
5714 scmd = abort->scsi_cmd;
5715 dev = (struct hpsa_scsi_dev_t *)(scmd->device->hostdata);
5717 dev_warn(&h->pdev->dev,
5718 "Cannot abort: no device pointer for command.\n");
5719 return -1; /* not abortable */
5722 if (h->raid_offload_debug > 0)
5723 dev_info(&h->pdev->dev,
5724 "scsi %d:%d:%d:%d %s scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5725 h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
5727 scsi3addr[0], scsi3addr[1], scsi3addr[2], scsi3addr[3],
5728 scsi3addr[4], scsi3addr[5], scsi3addr[6], scsi3addr[7]);
5730 if (!dev->offload_enabled) {
5731 dev_warn(&h->pdev->dev,
5732 "Can't abort: device is not operating in HP SSD Smart Path mode.\n");
5733 return -1; /* not abortable */
5736 /* Incoming scsi3addr is logical addr. We need physical disk addr. */
5737 if (!hpsa_get_pdisk_of_ioaccel2(h, abort, psa)) {
5738 dev_warn(&h->pdev->dev, "Can't abort: Failed lookup of physical address.\n");
5739 return -1; /* not abortable */
5742 /* send the reset */
5743 if (h->raid_offload_debug > 0)
5744 dev_info(&h->pdev->dev,
5745 "Reset as abort: Resetting physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5746 psa[0], psa[1], psa[2], psa[3],
5747 psa[4], psa[5], psa[6], psa[7]);
5748 rc = hpsa_do_reset(h, dev, psa, HPSA_RESET_TYPE_TARGET, reply_queue);
5750 dev_warn(&h->pdev->dev,
5751 "Reset as abort: Failed on physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5752 psa[0], psa[1], psa[2], psa[3],
5753 psa[4], psa[5], psa[6], psa[7]);
5754 return rc; /* failed to reset */
5757 /* wait for device to recover */
5758 if (wait_for_device_to_become_ready(h, psa, reply_queue) != 0) {
5759 dev_warn(&h->pdev->dev,
5760 "Reset as abort: Failed: Device never recovered from reset: 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5761 psa[0], psa[1], psa[2], psa[3],
5762 psa[4], psa[5], psa[6], psa[7]);
5763 return -1; /* failed to recover */
5766 /* device recovered */
5767 dev_info(&h->pdev->dev,
5768 "Reset as abort: Device recovered from reset: scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5769 psa[0], psa[1], psa[2], psa[3],
5770 psa[4], psa[5], psa[6], psa[7]);
5772 return rc; /* success */
5775 static int hpsa_send_abort_ioaccel2(struct ctlr_info *h,
5776 struct CommandList *abort, int reply_queue)
5779 struct CommandList *c;
5780 __le32 taglower, tagupper;
5781 struct hpsa_scsi_dev_t *dev;
5782 struct io_accel2_cmd *c2;
5784 dev = abort->scsi_cmd->device->hostdata;
5785 if (!dev->offload_enabled && !dev->hba_ioaccel_enabled)
5789 setup_ioaccel2_abort_cmd(c, h, abort, reply_queue);
5790 c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
5791 (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
5792 hpsa_get_tag(h, abort, &taglower, &tagupper);
5793 dev_dbg(&h->pdev->dev,
5794 "%s: Tag:0x%08x:%08x: do_simple_cmd(ioaccel2 abort) completed.\n",
5795 __func__, tagupper, taglower);
5796 /* no unmap needed here because no data xfer. */
5798 dev_dbg(&h->pdev->dev,
5799 "%s: Tag:0x%08x:%08x: abort service response = 0x%02x.\n",
5800 __func__, tagupper, taglower, c2->error_data.serv_response);
5801 switch (c2->error_data.serv_response) {
5802 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
5803 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
5806 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
5807 case IOACCEL2_SERV_RESPONSE_FAILURE:
5808 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
5812 dev_warn(&h->pdev->dev,
5813 "%s: Tag:0x%08x:%08x: unknown abort service response 0x%02x\n",
5814 __func__, tagupper, taglower,
5815 c2->error_data.serv_response);
5819 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n", __func__,
5820 tagupper, taglower);
5824 static int hpsa_send_abort_both_ways(struct ctlr_info *h,
5825 unsigned char *scsi3addr, struct CommandList *abort, int reply_queue)
5828 * ioccelerator mode 2 commands should be aborted via the
5829 * accelerated path, since RAID path is unaware of these commands,
5830 * but not all underlying firmware can handle abort TMF.
5831 * Change abort to physical device reset when abort TMF is unsupported.
5833 if (abort->cmd_type == CMD_IOACCEL2) {
5834 if (HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags)
5835 return hpsa_send_abort_ioaccel2(h, abort,
5838 return hpsa_send_reset_as_abort_ioaccel2(h, scsi3addr,
5839 abort, reply_queue);
5841 return hpsa_send_abort(h, scsi3addr, abort, reply_queue);
5844 /* Find out which reply queue a command was meant to return on */
5845 static int hpsa_extract_reply_queue(struct ctlr_info *h,
5846 struct CommandList *c)
5848 if (c->cmd_type == CMD_IOACCEL2)
5849 return h->ioaccel2_cmd_pool[c->cmdindex].reply_queue;
5850 return c->Header.ReplyQueue;
5854 * Limit concurrency of abort commands to prevent
5855 * over-subscription of commands
5857 static inline int wait_for_available_abort_cmd(struct ctlr_info *h)
5859 #define ABORT_CMD_WAIT_MSECS 5000
5860 return !wait_event_timeout(h->abort_cmd_wait_queue,
5861 atomic_dec_if_positive(&h->abort_cmds_available) >= 0,
5862 msecs_to_jiffies(ABORT_CMD_WAIT_MSECS));
5865 /* Send an abort for the specified command.
5866 * If the device and controller support it,
5867 * send a task abort request.
5869 static int hpsa_eh_abort_handler(struct scsi_cmnd *sc)
5873 struct ctlr_info *h;
5874 struct hpsa_scsi_dev_t *dev;
5875 struct CommandList *abort; /* pointer to command to be aborted */
5876 struct scsi_cmnd *as; /* ptr to scsi cmd inside aborted command. */
5877 char msg[256]; /* For debug messaging. */
5879 __le32 tagupper, taglower;
5880 int refcount, reply_queue;
5885 if (sc->device == NULL)
5888 /* Find the controller of the command to be aborted */
5889 h = sdev_to_hba(sc->device);
5893 /* Find the device of the command to be aborted */
5894 dev = sc->device->hostdata;
5896 dev_err(&h->pdev->dev, "%s FAILED, Device lookup failed.\n",
5901 /* If controller locked up, we can guarantee command won't complete */
5902 if (lockup_detected(h)) {
5903 hpsa_show_dev_msg(KERN_WARNING, h, dev,
5904 "ABORT FAILED, lockup detected");
5908 /* This is a good time to check if controller lockup has occurred */
5909 if (detect_controller_lockup(h)) {
5910 hpsa_show_dev_msg(KERN_WARNING, h, dev,
5911 "ABORT FAILED, new lockup detected");
5915 /* Check that controller supports some kind of task abort */
5916 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags) &&
5917 !(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
5920 memset(msg, 0, sizeof(msg));
5921 ml += sprintf(msg+ml, "scsi %d:%d:%d:%llu %s %p",
5922 h->scsi_host->host_no, sc->device->channel,
5923 sc->device->id, sc->device->lun,
5924 "Aborting command", sc);
5926 /* Get SCSI command to be aborted */
5927 abort = (struct CommandList *) sc->host_scribble;
5928 if (abort == NULL) {
5929 /* This can happen if the command already completed. */
5932 refcount = atomic_inc_return(&abort->refcount);
5933 if (refcount == 1) { /* Command is done already. */
5938 /* Don't bother trying the abort if we know it won't work. */
5939 if (abort->cmd_type != CMD_IOACCEL2 &&
5940 abort->cmd_type != CMD_IOACCEL1 && !dev->supports_aborts) {
5946 * Check that we're aborting the right command.
5947 * It's possible the CommandList already completed and got re-used.
5949 if (abort->scsi_cmd != sc) {
5954 abort->abort_pending = true;
5955 hpsa_get_tag(h, abort, &taglower, &tagupper);
5956 reply_queue = hpsa_extract_reply_queue(h, abort);
5957 ml += sprintf(msg+ml, "Tag:0x%08x:%08x ", tagupper, taglower);
5958 as = abort->scsi_cmd;
5960 ml += sprintf(msg+ml,
5961 "CDBLen: %d CDB: 0x%02x%02x... SN: 0x%lx ",
5962 as->cmd_len, as->cmnd[0], as->cmnd[1],
5964 dev_warn(&h->pdev->dev, "%s BEING SENT\n", msg);
5965 hpsa_show_dev_msg(KERN_WARNING, h, dev, "Aborting command");
5968 * Command is in flight, or possibly already completed
5969 * by the firmware (but not to the scsi mid layer) but we can't
5970 * distinguish which. Send the abort down.
5972 if (wait_for_available_abort_cmd(h)) {
5973 dev_warn(&h->pdev->dev,
5974 "%s FAILED, timeout waiting for an abort command to become available.\n",
5979 rc = hpsa_send_abort_both_ways(h, dev->scsi3addr, abort, reply_queue);
5980 atomic_inc(&h->abort_cmds_available);
5981 wake_up_all(&h->abort_cmd_wait_queue);
5983 dev_warn(&h->pdev->dev, "%s SENT, FAILED\n", msg);
5984 hpsa_show_dev_msg(KERN_WARNING, h, dev,
5985 "FAILED to abort command");
5989 dev_info(&h->pdev->dev, "%s SENT, SUCCESS\n", msg);
5990 wait_event(h->event_sync_wait_queue,
5991 abort->scsi_cmd != sc || lockup_detected(h));
5993 return !lockup_detected(h) ? SUCCESS : FAILED;
5997 * For operations with an associated SCSI command, a command block is allocated
5998 * at init, and managed by cmd_tagged_alloc() and cmd_tagged_free() using the
5999 * block request tag as an index into a table of entries. cmd_tagged_free() is
6000 * the complement, although cmd_free() may be called instead.
6002 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
6003 struct scsi_cmnd *scmd)
6005 int idx = hpsa_get_cmd_index(scmd);
6006 struct CommandList *c = h->cmd_pool + idx;
6008 if (idx < HPSA_NRESERVED_CMDS || idx >= h->nr_cmds) {
6009 dev_err(&h->pdev->dev, "Bad block tag: %d not in [%d..%d]\n",
6010 idx, HPSA_NRESERVED_CMDS, h->nr_cmds - 1);
6011 /* The index value comes from the block layer, so if it's out of
6012 * bounds, it's probably not our bug.
6017 atomic_inc(&c->refcount);
6018 if (unlikely(!hpsa_is_cmd_idle(c))) {
6020 * We expect that the SCSI layer will hand us a unique tag
6021 * value. Thus, there should never be a collision here between
6022 * two requests...because if the selected command isn't idle
6023 * then someone is going to be very disappointed.
6025 dev_err(&h->pdev->dev,
6026 "tag collision (tag=%d) in cmd_tagged_alloc().\n",
6028 if (c->scsi_cmd != NULL)
6029 scsi_print_command(c->scsi_cmd);
6030 scsi_print_command(scmd);
6033 hpsa_cmd_partial_init(h, idx, c);
6037 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c)
6040 * Release our reference to the block. We don't need to do anything
6041 * else to free it, because it is accessed by index. (There's no point
6042 * in checking the result of the decrement, since we cannot guarantee
6043 * that there isn't a concurrent abort which is also accessing it.)
6045 (void)atomic_dec(&c->refcount);
6049 * For operations that cannot sleep, a command block is allocated at init,
6050 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
6051 * which ones are free or in use. Lock must be held when calling this.
6052 * cmd_free() is the complement.
6053 * This function never gives up and returns NULL. If it hangs,
6054 * another thread must call cmd_free() to free some tags.
6057 static struct CommandList *cmd_alloc(struct ctlr_info *h)
6059 struct CommandList *c;
6064 * There is some *extremely* small but non-zero chance that that
6065 * multiple threads could get in here, and one thread could
6066 * be scanning through the list of bits looking for a free
6067 * one, but the free ones are always behind him, and other
6068 * threads sneak in behind him and eat them before he can
6069 * get to them, so that while there is always a free one, a
6070 * very unlucky thread might be starved anyway, never able to
6071 * beat the other threads. In reality, this happens so
6072 * infrequently as to be indistinguishable from never.
6074 * Note that we start allocating commands before the SCSI host structure
6075 * is initialized. Since the search starts at bit zero, this
6076 * all works, since we have at least one command structure available;
6077 * however, it means that the structures with the low indexes have to be
6078 * reserved for driver-initiated requests, while requests from the block
6079 * layer will use the higher indexes.
6083 i = find_next_zero_bit(h->cmd_pool_bits,
6084 HPSA_NRESERVED_CMDS,
6086 if (unlikely(i >= HPSA_NRESERVED_CMDS)) {
6090 c = h->cmd_pool + i;
6091 refcount = atomic_inc_return(&c->refcount);
6092 if (unlikely(refcount > 1)) {
6093 cmd_free(h, c); /* already in use */
6094 offset = (i + 1) % HPSA_NRESERVED_CMDS;
6097 set_bit(i & (BITS_PER_LONG - 1),
6098 h->cmd_pool_bits + (i / BITS_PER_LONG));
6099 break; /* it's ours now. */
6101 hpsa_cmd_partial_init(h, i, c);
6106 * This is the complementary operation to cmd_alloc(). Note, however, in some
6107 * corner cases it may also be used to free blocks allocated by
6108 * cmd_tagged_alloc() in which case the ref-count decrement does the trick and
6109 * the clear-bit is harmless.
6111 static void cmd_free(struct ctlr_info *h, struct CommandList *c)
6113 if (atomic_dec_and_test(&c->refcount)) {
6116 i = c - h->cmd_pool;
6117 clear_bit(i & (BITS_PER_LONG - 1),
6118 h->cmd_pool_bits + (i / BITS_PER_LONG));
6122 #ifdef CONFIG_COMPAT
6124 static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd,
6127 IOCTL32_Command_struct __user *arg32 =
6128 (IOCTL32_Command_struct __user *) arg;
6129 IOCTL_Command_struct arg64;
6130 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
6134 memset(&arg64, 0, sizeof(arg64));
6136 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
6137 sizeof(arg64.LUN_info));
6138 err |= copy_from_user(&arg64.Request, &arg32->Request,
6139 sizeof(arg64.Request));
6140 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
6141 sizeof(arg64.error_info));
6142 err |= get_user(arg64.buf_size, &arg32->buf_size);
6143 err |= get_user(cp, &arg32->buf);
6144 arg64.buf = compat_ptr(cp);
6145 err |= copy_to_user(p, &arg64, sizeof(arg64));
6150 err = hpsa_ioctl(dev, CCISS_PASSTHRU, p);
6153 err |= copy_in_user(&arg32->error_info, &p->error_info,
6154 sizeof(arg32->error_info));
6160 static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
6161 int cmd, void __user *arg)
6163 BIG_IOCTL32_Command_struct __user *arg32 =
6164 (BIG_IOCTL32_Command_struct __user *) arg;
6165 BIG_IOCTL_Command_struct arg64;
6166 BIG_IOCTL_Command_struct __user *p =
6167 compat_alloc_user_space(sizeof(arg64));
6171 memset(&arg64, 0, sizeof(arg64));
6173 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
6174 sizeof(arg64.LUN_info));
6175 err |= copy_from_user(&arg64.Request, &arg32->Request,
6176 sizeof(arg64.Request));
6177 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
6178 sizeof(arg64.error_info));
6179 err |= get_user(arg64.buf_size, &arg32->buf_size);
6180 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
6181 err |= get_user(cp, &arg32->buf);
6182 arg64.buf = compat_ptr(cp);
6183 err |= copy_to_user(p, &arg64, sizeof(arg64));
6188 err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, p);
6191 err |= copy_in_user(&arg32->error_info, &p->error_info,
6192 sizeof(arg32->error_info));
6198 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
6201 case CCISS_GETPCIINFO:
6202 case CCISS_GETINTINFO:
6203 case CCISS_SETINTINFO:
6204 case CCISS_GETNODENAME:
6205 case CCISS_SETNODENAME:
6206 case CCISS_GETHEARTBEAT:
6207 case CCISS_GETBUSTYPES:
6208 case CCISS_GETFIRMVER:
6209 case CCISS_GETDRIVVER:
6210 case CCISS_REVALIDVOLS:
6211 case CCISS_DEREGDISK:
6212 case CCISS_REGNEWDISK:
6214 case CCISS_RESCANDISK:
6215 case CCISS_GETLUNINFO:
6216 return hpsa_ioctl(dev, cmd, arg);
6218 case CCISS_PASSTHRU32:
6219 return hpsa_ioctl32_passthru(dev, cmd, arg);
6220 case CCISS_BIG_PASSTHRU32:
6221 return hpsa_ioctl32_big_passthru(dev, cmd, arg);
6224 return -ENOIOCTLCMD;
6229 static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp)
6231 struct hpsa_pci_info pciinfo;
6235 pciinfo.domain = pci_domain_nr(h->pdev->bus);
6236 pciinfo.bus = h->pdev->bus->number;
6237 pciinfo.dev_fn = h->pdev->devfn;
6238 pciinfo.board_id = h->board_id;
6239 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo)))
6244 static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp)
6246 DriverVer_type DriverVer;
6247 unsigned char vmaj, vmin, vsubmin;
6250 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu",
6251 &vmaj, &vmin, &vsubmin);
6253 dev_info(&h->pdev->dev, "driver version string '%s' "
6254 "unrecognized.", HPSA_DRIVER_VERSION);
6259 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin;
6262 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type)))
6267 static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
6269 IOCTL_Command_struct iocommand;
6270 struct CommandList *c;
6277 if (!capable(CAP_SYS_RAWIO))
6279 if (copy_from_user(&iocommand, argp, sizeof(iocommand)))
6281 if ((iocommand.buf_size < 1) &&
6282 (iocommand.Request.Type.Direction != XFER_NONE)) {
6285 if (iocommand.buf_size > 0) {
6286 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
6289 if (iocommand.Request.Type.Direction & XFER_WRITE) {
6290 /* Copy the data into the buffer we created */
6291 if (copy_from_user(buff, iocommand.buf,
6292 iocommand.buf_size)) {
6297 memset(buff, 0, iocommand.buf_size);
6302 /* Fill in the command type */
6303 c->cmd_type = CMD_IOCTL_PEND;
6304 c->scsi_cmd = SCSI_CMD_BUSY;
6305 /* Fill in Command Header */
6306 c->Header.ReplyQueue = 0; /* unused in simple mode */
6307 if (iocommand.buf_size > 0) { /* buffer to fill */
6308 c->Header.SGList = 1;
6309 c->Header.SGTotal = cpu_to_le16(1);
6310 } else { /* no buffers to fill */
6311 c->Header.SGList = 0;
6312 c->Header.SGTotal = cpu_to_le16(0);
6314 memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN));
6316 /* Fill in Request block */
6317 memcpy(&c->Request, &iocommand.Request,
6318 sizeof(c->Request));
6320 /* Fill in the scatter gather information */
6321 if (iocommand.buf_size > 0) {
6322 temp64 = pci_map_single(h->pdev, buff,
6323 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
6324 if (dma_mapping_error(&h->pdev->dev, (dma_addr_t) temp64)) {
6325 c->SG[0].Addr = cpu_to_le64(0);
6326 c->SG[0].Len = cpu_to_le32(0);
6330 c->SG[0].Addr = cpu_to_le64(temp64);
6331 c->SG[0].Len = cpu_to_le32(iocommand.buf_size);
6332 c->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* not chaining */
6334 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
6335 if (iocommand.buf_size > 0)
6336 hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
6337 check_ioctl_unit_attention(h, c);
6343 /* Copy the error information out */
6344 memcpy(&iocommand.error_info, c->err_info,
6345 sizeof(iocommand.error_info));
6346 if (copy_to_user(argp, &iocommand, sizeof(iocommand))) {
6350 if ((iocommand.Request.Type.Direction & XFER_READ) &&
6351 iocommand.buf_size > 0) {
6352 /* Copy the data out of the buffer we created */
6353 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
6365 static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
6367 BIG_IOCTL_Command_struct *ioc;
6368 struct CommandList *c;
6369 unsigned char **buff = NULL;
6370 int *buff_size = NULL;
6376 BYTE __user *data_ptr;
6380 if (!capable(CAP_SYS_RAWIO))
6382 ioc = (BIG_IOCTL_Command_struct *)
6383 kmalloc(sizeof(*ioc), GFP_KERNEL);
6388 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
6392 if ((ioc->buf_size < 1) &&
6393 (ioc->Request.Type.Direction != XFER_NONE)) {
6397 /* Check kmalloc limits using all SGs */
6398 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
6402 if (ioc->buf_size > ioc->malloc_size * SG_ENTRIES_IN_CMD) {
6406 buff = kzalloc(SG_ENTRIES_IN_CMD * sizeof(char *), GFP_KERNEL);
6411 buff_size = kmalloc(SG_ENTRIES_IN_CMD * sizeof(int), GFP_KERNEL);
6416 left = ioc->buf_size;
6417 data_ptr = ioc->buf;
6419 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
6420 buff_size[sg_used] = sz;
6421 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
6422 if (buff[sg_used] == NULL) {
6426 if (ioc->Request.Type.Direction & XFER_WRITE) {
6427 if (copy_from_user(buff[sg_used], data_ptr, sz)) {
6432 memset(buff[sg_used], 0, sz);
6439 c->cmd_type = CMD_IOCTL_PEND;
6440 c->scsi_cmd = SCSI_CMD_BUSY;
6441 c->Header.ReplyQueue = 0;
6442 c->Header.SGList = (u8) sg_used;
6443 c->Header.SGTotal = cpu_to_le16(sg_used);
6444 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN));
6445 memcpy(&c->Request, &ioc->Request, sizeof(c->Request));
6446 if (ioc->buf_size > 0) {
6448 for (i = 0; i < sg_used; i++) {
6449 temp64 = pci_map_single(h->pdev, buff[i],
6450 buff_size[i], PCI_DMA_BIDIRECTIONAL);
6451 if (dma_mapping_error(&h->pdev->dev,
6452 (dma_addr_t) temp64)) {
6453 c->SG[i].Addr = cpu_to_le64(0);
6454 c->SG[i].Len = cpu_to_le32(0);
6455 hpsa_pci_unmap(h->pdev, c, i,
6456 PCI_DMA_BIDIRECTIONAL);
6460 c->SG[i].Addr = cpu_to_le64(temp64);
6461 c->SG[i].Len = cpu_to_le32(buff_size[i]);
6462 c->SG[i].Ext = cpu_to_le32(0);
6464 c->SG[--i].Ext = cpu_to_le32(HPSA_SG_LAST);
6466 status = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
6468 hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL);
6469 check_ioctl_unit_attention(h, c);
6475 /* Copy the error information out */
6476 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info));
6477 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
6481 if ((ioc->Request.Type.Direction & XFER_READ) && ioc->buf_size > 0) {
6484 /* Copy the data out of the buffer we created */
6485 BYTE __user *ptr = ioc->buf;
6486 for (i = 0; i < sg_used; i++) {
6487 if (copy_to_user(ptr, buff[i], buff_size[i])) {
6491 ptr += buff_size[i];
6501 for (i = 0; i < sg_used; i++)
6510 static void check_ioctl_unit_attention(struct ctlr_info *h,
6511 struct CommandList *c)
6513 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
6514 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
6515 (void) check_for_unit_attention(h, c);
6521 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
6523 struct ctlr_info *h;
6524 void __user *argp = (void __user *)arg;
6527 h = sdev_to_hba(dev);
6530 case CCISS_DEREGDISK:
6531 case CCISS_REGNEWDISK:
6533 hpsa_scan_start(h->scsi_host);
6535 case CCISS_GETPCIINFO:
6536 return hpsa_getpciinfo_ioctl(h, argp);
6537 case CCISS_GETDRIVVER:
6538 return hpsa_getdrivver_ioctl(h, argp);
6539 case CCISS_PASSTHRU:
6540 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6542 rc = hpsa_passthru_ioctl(h, argp);
6543 atomic_inc(&h->passthru_cmds_avail);
6545 case CCISS_BIG_PASSTHRU:
6546 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6548 rc = hpsa_big_passthru_ioctl(h, argp);
6549 atomic_inc(&h->passthru_cmds_avail);
6556 static void hpsa_send_host_reset(struct ctlr_info *h, unsigned char *scsi3addr,
6559 struct CommandList *c;
6563 /* fill_cmd can't fail here, no data buffer to map */
6564 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0,
6565 RAID_CTLR_LUNID, TYPE_MSG);
6566 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */
6568 enqueue_cmd_and_start_io(h, c);
6569 /* Don't wait for completion, the reset won't complete. Don't free
6570 * the command either. This is the last command we will send before
6571 * re-initializing everything, so it doesn't matter and won't leak.
6576 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
6577 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
6580 int pci_dir = XFER_NONE;
6581 u64 tag; /* for commands to be aborted */
6583 c->cmd_type = CMD_IOCTL_PEND;
6584 c->scsi_cmd = SCSI_CMD_BUSY;
6585 c->Header.ReplyQueue = 0;
6586 if (buff != NULL && size > 0) {
6587 c->Header.SGList = 1;
6588 c->Header.SGTotal = cpu_to_le16(1);
6590 c->Header.SGList = 0;
6591 c->Header.SGTotal = cpu_to_le16(0);
6593 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
6595 if (cmd_type == TYPE_CMD) {
6598 /* are we trying to read a vital product page */
6599 if (page_code & VPD_PAGE) {
6600 c->Request.CDB[1] = 0x01;
6601 c->Request.CDB[2] = (page_code & 0xff);
6603 c->Request.CDBLen = 6;
6604 c->Request.type_attr_dir =
6605 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6606 c->Request.Timeout = 0;
6607 c->Request.CDB[0] = HPSA_INQUIRY;
6608 c->Request.CDB[4] = size & 0xFF;
6610 case HPSA_REPORT_LOG:
6611 case HPSA_REPORT_PHYS:
6612 /* Talking to controller so It's a physical command
6613 mode = 00 target = 0. Nothing to write.
6615 c->Request.CDBLen = 12;
6616 c->Request.type_attr_dir =
6617 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6618 c->Request.Timeout = 0;
6619 c->Request.CDB[0] = cmd;
6620 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6621 c->Request.CDB[7] = (size >> 16) & 0xFF;
6622 c->Request.CDB[8] = (size >> 8) & 0xFF;
6623 c->Request.CDB[9] = size & 0xFF;
6625 case BMIC_SENSE_DIAG_OPTIONS:
6626 c->Request.CDBLen = 16;
6627 c->Request.type_attr_dir =
6628 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6629 c->Request.Timeout = 0;
6630 /* Spec says this should be BMIC_WRITE */
6631 c->Request.CDB[0] = BMIC_READ;
6632 c->Request.CDB[6] = BMIC_SENSE_DIAG_OPTIONS;
6634 case BMIC_SET_DIAG_OPTIONS:
6635 c->Request.CDBLen = 16;
6636 c->Request.type_attr_dir =
6637 TYPE_ATTR_DIR(cmd_type,
6638 ATTR_SIMPLE, XFER_WRITE);
6639 c->Request.Timeout = 0;
6640 c->Request.CDB[0] = BMIC_WRITE;
6641 c->Request.CDB[6] = BMIC_SET_DIAG_OPTIONS;
6643 case HPSA_CACHE_FLUSH:
6644 c->Request.CDBLen = 12;
6645 c->Request.type_attr_dir =
6646 TYPE_ATTR_DIR(cmd_type,
6647 ATTR_SIMPLE, XFER_WRITE);
6648 c->Request.Timeout = 0;
6649 c->Request.CDB[0] = BMIC_WRITE;
6650 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
6651 c->Request.CDB[7] = (size >> 8) & 0xFF;
6652 c->Request.CDB[8] = size & 0xFF;
6654 case TEST_UNIT_READY:
6655 c->Request.CDBLen = 6;
6656 c->Request.type_attr_dir =
6657 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6658 c->Request.Timeout = 0;
6660 case HPSA_GET_RAID_MAP:
6661 c->Request.CDBLen = 12;
6662 c->Request.type_attr_dir =
6663 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6664 c->Request.Timeout = 0;
6665 c->Request.CDB[0] = HPSA_CISS_READ;
6666 c->Request.CDB[1] = cmd;
6667 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6668 c->Request.CDB[7] = (size >> 16) & 0xFF;
6669 c->Request.CDB[8] = (size >> 8) & 0xFF;
6670 c->Request.CDB[9] = size & 0xFF;
6672 case BMIC_SENSE_CONTROLLER_PARAMETERS:
6673 c->Request.CDBLen = 10;
6674 c->Request.type_attr_dir =
6675 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6676 c->Request.Timeout = 0;
6677 c->Request.CDB[0] = BMIC_READ;
6678 c->Request.CDB[6] = BMIC_SENSE_CONTROLLER_PARAMETERS;
6679 c->Request.CDB[7] = (size >> 16) & 0xFF;
6680 c->Request.CDB[8] = (size >> 8) & 0xFF;
6682 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
6683 c->Request.CDBLen = 10;
6684 c->Request.type_attr_dir =
6685 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6686 c->Request.Timeout = 0;
6687 c->Request.CDB[0] = BMIC_READ;
6688 c->Request.CDB[6] = BMIC_IDENTIFY_PHYSICAL_DEVICE;
6689 c->Request.CDB[7] = (size >> 16) & 0xFF;
6690 c->Request.CDB[8] = (size >> 8) & 0XFF;
6692 case BMIC_SENSE_SUBSYSTEM_INFORMATION:
6693 c->Request.CDBLen = 10;
6694 c->Request.type_attr_dir =
6695 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6696 c->Request.Timeout = 0;
6697 c->Request.CDB[0] = BMIC_READ;
6698 c->Request.CDB[6] = BMIC_SENSE_SUBSYSTEM_INFORMATION;
6699 c->Request.CDB[7] = (size >> 16) & 0xFF;
6700 c->Request.CDB[8] = (size >> 8) & 0XFF;
6702 case BMIC_IDENTIFY_CONTROLLER:
6703 c->Request.CDBLen = 10;
6704 c->Request.type_attr_dir =
6705 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6706 c->Request.Timeout = 0;
6707 c->Request.CDB[0] = BMIC_READ;
6708 c->Request.CDB[1] = 0;
6709 c->Request.CDB[2] = 0;
6710 c->Request.CDB[3] = 0;
6711 c->Request.CDB[4] = 0;
6712 c->Request.CDB[5] = 0;
6713 c->Request.CDB[6] = BMIC_IDENTIFY_CONTROLLER;
6714 c->Request.CDB[7] = (size >> 16) & 0xFF;
6715 c->Request.CDB[8] = (size >> 8) & 0XFF;
6716 c->Request.CDB[9] = 0;
6719 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd);
6723 } else if (cmd_type == TYPE_MSG) {
6726 case HPSA_PHYS_TARGET_RESET:
6727 c->Request.CDBLen = 16;
6728 c->Request.type_attr_dir =
6729 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6730 c->Request.Timeout = 0; /* Don't time out */
6731 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
6732 c->Request.CDB[0] = HPSA_RESET;
6733 c->Request.CDB[1] = HPSA_TARGET_RESET_TYPE;
6734 /* Physical target reset needs no control bytes 4-7*/
6735 c->Request.CDB[4] = 0x00;
6736 c->Request.CDB[5] = 0x00;
6737 c->Request.CDB[6] = 0x00;
6738 c->Request.CDB[7] = 0x00;
6740 case HPSA_DEVICE_RESET_MSG:
6741 c->Request.CDBLen = 16;
6742 c->Request.type_attr_dir =
6743 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6744 c->Request.Timeout = 0; /* Don't time out */
6745 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
6746 c->Request.CDB[0] = cmd;
6747 c->Request.CDB[1] = HPSA_RESET_TYPE_LUN;
6748 /* If bytes 4-7 are zero, it means reset the */
6750 c->Request.CDB[4] = 0x00;
6751 c->Request.CDB[5] = 0x00;
6752 c->Request.CDB[6] = 0x00;
6753 c->Request.CDB[7] = 0x00;
6755 case HPSA_ABORT_MSG:
6756 memcpy(&tag, buff, sizeof(tag));
6757 dev_dbg(&h->pdev->dev,
6758 "Abort Tag:0x%016llx using rqst Tag:0x%016llx",
6759 tag, c->Header.tag);
6760 c->Request.CDBLen = 16;
6761 c->Request.type_attr_dir =
6762 TYPE_ATTR_DIR(cmd_type,
6763 ATTR_SIMPLE, XFER_WRITE);
6764 c->Request.Timeout = 0; /* Don't time out */
6765 c->Request.CDB[0] = HPSA_TASK_MANAGEMENT;
6766 c->Request.CDB[1] = HPSA_TMF_ABORT_TASK;
6767 c->Request.CDB[2] = 0x00; /* reserved */
6768 c->Request.CDB[3] = 0x00; /* reserved */
6769 /* Tag to abort goes in CDB[4]-CDB[11] */
6770 memcpy(&c->Request.CDB[4], &tag, sizeof(tag));
6771 c->Request.CDB[12] = 0x00; /* reserved */
6772 c->Request.CDB[13] = 0x00; /* reserved */
6773 c->Request.CDB[14] = 0x00; /* reserved */
6774 c->Request.CDB[15] = 0x00; /* reserved */
6777 dev_warn(&h->pdev->dev, "unknown message type %d\n",
6782 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type);
6786 switch (GET_DIR(c->Request.type_attr_dir)) {
6788 pci_dir = PCI_DMA_FROMDEVICE;
6791 pci_dir = PCI_DMA_TODEVICE;
6794 pci_dir = PCI_DMA_NONE;
6797 pci_dir = PCI_DMA_BIDIRECTIONAL;
6799 if (hpsa_map_one(h->pdev, c, buff, size, pci_dir))
6805 * Map (physical) PCI mem into (virtual) kernel space
6807 static void __iomem *remap_pci_mem(ulong base, ulong size)
6809 ulong page_base = ((ulong) base) & PAGE_MASK;
6810 ulong page_offs = ((ulong) base) - page_base;
6811 void __iomem *page_remapped = ioremap_nocache(page_base,
6814 return page_remapped ? (page_remapped + page_offs) : NULL;
6817 static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q)
6819 return h->access.command_completed(h, q);
6822 static inline bool interrupt_pending(struct ctlr_info *h)
6824 return h->access.intr_pending(h);
6827 static inline long interrupt_not_for_us(struct ctlr_info *h)
6829 return (h->access.intr_pending(h) == 0) ||
6830 (h->interrupts_enabled == 0);
6833 static inline int bad_tag(struct ctlr_info *h, u32 tag_index,
6836 if (unlikely(tag_index >= h->nr_cmds)) {
6837 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag);
6843 static inline void finish_cmd(struct CommandList *c)
6845 dial_up_lockup_detection_on_fw_flash_complete(c->h, c);
6846 if (likely(c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_SCSI
6847 || c->cmd_type == CMD_IOACCEL2))
6848 complete_scsi_command(c);
6849 else if (c->cmd_type == CMD_IOCTL_PEND || c->cmd_type == IOACCEL2_TMF)
6850 complete(c->waiting);
6853 /* process completion of an indexed ("direct lookup") command */
6854 static inline void process_indexed_cmd(struct ctlr_info *h,
6858 struct CommandList *c;
6860 tag_index = raw_tag >> DIRECT_LOOKUP_SHIFT;
6861 if (!bad_tag(h, tag_index, raw_tag)) {
6862 c = h->cmd_pool + tag_index;
6867 /* Some controllers, like p400, will give us one interrupt
6868 * after a soft reset, even if we turned interrupts off.
6869 * Only need to check for this in the hpsa_xxx_discard_completions
6872 static int ignore_bogus_interrupt(struct ctlr_info *h)
6874 if (likely(!reset_devices))
6877 if (likely(h->interrupts_enabled))
6880 dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled "
6881 "(known firmware bug.) Ignoring.\n");
6887 * Convert &h->q[x] (passed to interrupt handlers) back to h.
6888 * Relies on (h-q[x] == x) being true for x such that
6889 * 0 <= x < MAX_REPLY_QUEUES.
6891 static struct ctlr_info *queue_to_hba(u8 *queue)
6893 return container_of((queue - *queue), struct ctlr_info, q[0]);
6896 static irqreturn_t hpsa_intx_discard_completions(int irq, void *queue)
6898 struct ctlr_info *h = queue_to_hba(queue);
6899 u8 q = *(u8 *) queue;
6902 if (ignore_bogus_interrupt(h))
6905 if (interrupt_not_for_us(h))
6907 h->last_intr_timestamp = get_jiffies_64();
6908 while (interrupt_pending(h)) {
6909 raw_tag = get_next_completion(h, q);
6910 while (raw_tag != FIFO_EMPTY)
6911 raw_tag = next_command(h, q);
6916 static irqreturn_t hpsa_msix_discard_completions(int irq, void *queue)
6918 struct ctlr_info *h = queue_to_hba(queue);
6920 u8 q = *(u8 *) queue;
6922 if (ignore_bogus_interrupt(h))
6925 h->last_intr_timestamp = get_jiffies_64();
6926 raw_tag = get_next_completion(h, q);
6927 while (raw_tag != FIFO_EMPTY)
6928 raw_tag = next_command(h, q);
6932 static irqreturn_t do_hpsa_intr_intx(int irq, void *queue)
6934 struct ctlr_info *h = queue_to_hba((u8 *) queue);
6936 u8 q = *(u8 *) queue;
6938 if (interrupt_not_for_us(h))
6940 h->last_intr_timestamp = get_jiffies_64();
6941 while (interrupt_pending(h)) {
6942 raw_tag = get_next_completion(h, q);
6943 while (raw_tag != FIFO_EMPTY) {
6944 process_indexed_cmd(h, raw_tag);
6945 raw_tag = next_command(h, q);
6951 static irqreturn_t do_hpsa_intr_msi(int irq, void *queue)
6953 struct ctlr_info *h = queue_to_hba(queue);
6955 u8 q = *(u8 *) queue;
6957 h->last_intr_timestamp = get_jiffies_64();
6958 raw_tag = get_next_completion(h, q);
6959 while (raw_tag != FIFO_EMPTY) {
6960 process_indexed_cmd(h, raw_tag);
6961 raw_tag = next_command(h, q);
6966 /* Send a message CDB to the firmware. Careful, this only works
6967 * in simple mode, not performant mode due to the tag lookup.
6968 * We only ever use this immediately after a controller reset.
6970 static int hpsa_message(struct pci_dev *pdev, unsigned char opcode,
6974 struct CommandListHeader CommandHeader;
6975 struct RequestBlock Request;
6976 struct ErrDescriptor ErrorDescriptor;
6978 struct Command *cmd;
6979 static const size_t cmd_sz = sizeof(*cmd) +
6980 sizeof(cmd->ErrorDescriptor);
6984 void __iomem *vaddr;
6987 vaddr = pci_ioremap_bar(pdev, 0);
6991 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
6992 * CCISS commands, so they must be allocated from the lower 4GiB of
6995 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
7001 cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64);
7007 /* This must fit, because of the 32-bit consistent DMA mask. Also,
7008 * although there's no guarantee, we assume that the address is at
7009 * least 4-byte aligned (most likely, it's page-aligned).
7011 paddr32 = cpu_to_le32(paddr64);
7013 cmd->CommandHeader.ReplyQueue = 0;
7014 cmd->CommandHeader.SGList = 0;
7015 cmd->CommandHeader.SGTotal = cpu_to_le16(0);
7016 cmd->CommandHeader.tag = cpu_to_le64(paddr64);
7017 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);
7019 cmd->Request.CDBLen = 16;
7020 cmd->Request.type_attr_dir =
7021 TYPE_ATTR_DIR(TYPE_MSG, ATTR_HEADOFQUEUE, XFER_NONE);
7022 cmd->Request.Timeout = 0; /* Don't time out */
7023 cmd->Request.CDB[0] = opcode;
7024 cmd->Request.CDB[1] = type;
7025 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */
7026 cmd->ErrorDescriptor.Addr =
7027 cpu_to_le64((le32_to_cpu(paddr32) + sizeof(*cmd)));
7028 cmd->ErrorDescriptor.Len = cpu_to_le32(sizeof(struct ErrorInfo));
7030 writel(le32_to_cpu(paddr32), vaddr + SA5_REQUEST_PORT_OFFSET);
7032 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) {
7033 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
7034 if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr64)
7036 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS);
7041 /* we leak the DMA buffer here ... no choice since the controller could
7042 * still complete the command.
7044 if (i == HPSA_MSG_SEND_RETRY_LIMIT) {
7045 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n",
7050 pci_free_consistent(pdev, cmd_sz, cmd, paddr64);
7052 if (tag & HPSA_ERROR_BIT) {
7053 dev_err(&pdev->dev, "controller message %02x:%02x failed\n",
7058 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n",
7063 #define hpsa_noop(p) hpsa_message(p, 3, 0)
7065 static int hpsa_controller_hard_reset(struct pci_dev *pdev,
7066 void __iomem *vaddr, u32 use_doorbell)
7070 /* For everything after the P600, the PCI power state method
7071 * of resetting the controller doesn't work, so we have this
7072 * other way using the doorbell register.
7074 dev_info(&pdev->dev, "using doorbell to reset controller\n");
7075 writel(use_doorbell, vaddr + SA5_DOORBELL);
7077 /* PMC hardware guys tell us we need a 10 second delay after
7078 * doorbell reset and before any attempt to talk to the board
7079 * at all to ensure that this actually works and doesn't fall
7080 * over in some weird corner cases.
7083 } else { /* Try to do it the PCI power state way */
7085 /* Quoting from the Open CISS Specification: "The Power
7086 * Management Control/Status Register (CSR) controls the power
7087 * state of the device. The normal operating state is D0,
7088 * CSR=00h. The software off state is D3, CSR=03h. To reset
7089 * the controller, place the interface device in D3 then to D0,
7090 * this causes a secondary PCI reset which will reset the
7095 dev_info(&pdev->dev, "using PCI PM to reset controller\n");
7097 /* enter the D3hot power management state */
7098 rc = pci_set_power_state(pdev, PCI_D3hot);
7104 /* enter the D0 power management state */
7105 rc = pci_set_power_state(pdev, PCI_D0);
7110 * The P600 requires a small delay when changing states.
7111 * Otherwise we may think the board did not reset and we bail.
7112 * This for kdump only and is particular to the P600.
7119 static void init_driver_version(char *driver_version, int len)
7121 memset(driver_version, 0, len);
7122 strncpy(driver_version, HPSA " " HPSA_DRIVER_VERSION, len - 1);
7125 static int write_driver_ver_to_cfgtable(struct CfgTable __iomem *cfgtable)
7127 char *driver_version;
7128 int i, size = sizeof(cfgtable->driver_version);
7130 driver_version = kmalloc(size, GFP_KERNEL);
7131 if (!driver_version)
7134 init_driver_version(driver_version, size);
7135 for (i = 0; i < size; i++)
7136 writeb(driver_version[i], &cfgtable->driver_version[i]);
7137 kfree(driver_version);
7141 static void read_driver_ver_from_cfgtable(struct CfgTable __iomem *cfgtable,
7142 unsigned char *driver_ver)
7146 for (i = 0; i < sizeof(cfgtable->driver_version); i++)
7147 driver_ver[i] = readb(&cfgtable->driver_version[i]);
7150 static int controller_reset_failed(struct CfgTable __iomem *cfgtable)
7153 char *driver_ver, *old_driver_ver;
7154 int rc, size = sizeof(cfgtable->driver_version);
7156 old_driver_ver = kmalloc(2 * size, GFP_KERNEL);
7157 if (!old_driver_ver)
7159 driver_ver = old_driver_ver + size;
7161 /* After a reset, the 32 bytes of "driver version" in the cfgtable
7162 * should have been changed, otherwise we know the reset failed.
7164 init_driver_version(old_driver_ver, size);
7165 read_driver_ver_from_cfgtable(cfgtable, driver_ver);
7166 rc = !memcmp(driver_ver, old_driver_ver, size);
7167 kfree(old_driver_ver);
7170 /* This does a hard reset of the controller using PCI power management
7171 * states or the using the doorbell register.
7173 static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev, u32 board_id)
7177 u64 cfg_base_addr_index;
7178 void __iomem *vaddr;
7179 unsigned long paddr;
7180 u32 misc_fw_support;
7182 struct CfgTable __iomem *cfgtable;
7184 u16 command_register;
7186 /* For controllers as old as the P600, this is very nearly
7189 * pci_save_state(pci_dev);
7190 * pci_set_power_state(pci_dev, PCI_D3hot);
7191 * pci_set_power_state(pci_dev, PCI_D0);
7192 * pci_restore_state(pci_dev);
7194 * For controllers newer than the P600, the pci power state
7195 * method of resetting doesn't work so we have another way
7196 * using the doorbell register.
7199 if (!ctlr_is_resettable(board_id)) {
7200 dev_warn(&pdev->dev, "Controller not resettable\n");
7204 /* if controller is soft- but not hard resettable... */
7205 if (!ctlr_is_hard_resettable(board_id))
7206 return -ENOTSUPP; /* try soft reset later. */
7208 /* Save the PCI command register */
7209 pci_read_config_word(pdev, 4, &command_register);
7210 pci_save_state(pdev);
7212 /* find the first memory BAR, so we can find the cfg table */
7213 rc = hpsa_pci_find_memory_BAR(pdev, &paddr);
7216 vaddr = remap_pci_mem(paddr, 0x250);
7220 /* find cfgtable in order to check if reset via doorbell is supported */
7221 rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr,
7222 &cfg_base_addr_index, &cfg_offset);
7225 cfgtable = remap_pci_mem(pci_resource_start(pdev,
7226 cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable));
7231 rc = write_driver_ver_to_cfgtable(cfgtable);
7233 goto unmap_cfgtable;
7235 /* If reset via doorbell register is supported, use that.
7236 * There are two such methods. Favor the newest method.
7238 misc_fw_support = readl(&cfgtable->misc_fw_support);
7239 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2;
7241 use_doorbell = DOORBELL_CTLR_RESET2;
7243 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET;
7245 dev_warn(&pdev->dev,
7246 "Soft reset not supported. Firmware update is required.\n");
7247 rc = -ENOTSUPP; /* try soft reset */
7248 goto unmap_cfgtable;
7252 rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell);
7254 goto unmap_cfgtable;
7256 pci_restore_state(pdev);
7257 pci_write_config_word(pdev, 4, command_register);
7259 /* Some devices (notably the HP Smart Array 5i Controller)
7260 need a little pause here */
7261 msleep(HPSA_POST_RESET_PAUSE_MSECS);
7263 rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY);
7265 dev_warn(&pdev->dev,
7266 "Failed waiting for board to become ready after hard reset\n");
7267 goto unmap_cfgtable;
7270 rc = controller_reset_failed(vaddr);
7272 goto unmap_cfgtable;
7274 dev_warn(&pdev->dev, "Unable to successfully reset "
7275 "controller. Will try soft reset.\n");
7278 dev_info(&pdev->dev, "board ready after hard reset.\n");
7290 * We cannot read the structure directly, for portability we must use
7292 * This is for debug only.
7294 static void print_cfg_table(struct device *dev, struct CfgTable __iomem *tb)
7300 dev_info(dev, "Controller Configuration information\n");
7301 dev_info(dev, "------------------------------------\n");
7302 for (i = 0; i < 4; i++)
7303 temp_name[i] = readb(&(tb->Signature[i]));
7304 temp_name[4] = '\0';
7305 dev_info(dev, " Signature = %s\n", temp_name);
7306 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence)));
7307 dev_info(dev, " Transport methods supported = 0x%x\n",
7308 readl(&(tb->TransportSupport)));
7309 dev_info(dev, " Transport methods active = 0x%x\n",
7310 readl(&(tb->TransportActive)));
7311 dev_info(dev, " Requested transport Method = 0x%x\n",
7312 readl(&(tb->HostWrite.TransportRequest)));
7313 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n",
7314 readl(&(tb->HostWrite.CoalIntDelay)));
7315 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n",
7316 readl(&(tb->HostWrite.CoalIntCount)));
7317 dev_info(dev, " Max outstanding commands = %d\n",
7318 readl(&(tb->CmdsOutMax)));
7319 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
7320 for (i = 0; i < 16; i++)
7321 temp_name[i] = readb(&(tb->ServerName[i]));
7322 temp_name[16] = '\0';
7323 dev_info(dev, " Server Name = %s\n", temp_name);
7324 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n",
7325 readl(&(tb->HeartBeat)));
7326 #endif /* HPSA_DEBUG */
7329 static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
7331 int i, offset, mem_type, bar_type;
7333 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
7336 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
7337 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
7338 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
7341 mem_type = pci_resource_flags(pdev, i) &
7342 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
7344 case PCI_BASE_ADDRESS_MEM_TYPE_32:
7345 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
7346 offset += 4; /* 32 bit */
7348 case PCI_BASE_ADDRESS_MEM_TYPE_64:
7351 default: /* reserved in PCI 2.2 */
7352 dev_warn(&pdev->dev,
7353 "base address is invalid\n");
7358 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
7364 static void hpsa_disable_interrupt_mode(struct ctlr_info *h)
7366 if (h->msix_vector) {
7367 if (h->pdev->msix_enabled)
7368 pci_disable_msix(h->pdev);
7370 } else if (h->msi_vector) {
7371 if (h->pdev->msi_enabled)
7372 pci_disable_msi(h->pdev);
7377 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
7378 * controllers that are capable. If not, we use legacy INTx mode.
7380 static void hpsa_interrupt_mode(struct ctlr_info *h)
7382 #ifdef CONFIG_PCI_MSI
7384 struct msix_entry hpsa_msix_entries[MAX_REPLY_QUEUES];
7386 for (i = 0; i < MAX_REPLY_QUEUES; i++) {
7387 hpsa_msix_entries[i].vector = 0;
7388 hpsa_msix_entries[i].entry = i;
7391 /* Some boards advertise MSI but don't really support it */
7392 if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) ||
7393 (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11))
7394 goto default_int_mode;
7395 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) {
7396 dev_info(&h->pdev->dev, "MSI-X capable controller\n");
7397 h->msix_vector = MAX_REPLY_QUEUES;
7398 if (h->msix_vector > num_online_cpus())
7399 h->msix_vector = num_online_cpus();
7400 err = pci_enable_msix_range(h->pdev, hpsa_msix_entries,
7403 dev_warn(&h->pdev->dev, "MSI-X init failed %d\n", err);
7405 goto single_msi_mode;
7406 } else if (err < h->msix_vector) {
7407 dev_warn(&h->pdev->dev, "only %d MSI-X vectors "
7408 "available\n", err);
7410 h->msix_vector = err;
7411 for (i = 0; i < h->msix_vector; i++)
7412 h->intr[i] = hpsa_msix_entries[i].vector;
7416 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) {
7417 dev_info(&h->pdev->dev, "MSI capable controller\n");
7418 if (!pci_enable_msi(h->pdev))
7421 dev_warn(&h->pdev->dev, "MSI init failed\n");
7424 #endif /* CONFIG_PCI_MSI */
7425 /* if we get here we're going to use the default interrupt mode */
7426 h->intr[h->intr_mode] = h->pdev->irq;
7429 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
7432 u32 subsystem_vendor_id, subsystem_device_id;
7434 subsystem_vendor_id = pdev->subsystem_vendor;
7435 subsystem_device_id = pdev->subsystem_device;
7436 *board_id = ((subsystem_device_id << 16) & 0xffff0000) |
7437 subsystem_vendor_id;
7439 for (i = 0; i < ARRAY_SIZE(products); i++)
7440 if (*board_id == products[i].board_id)
7443 if ((subsystem_vendor_id != PCI_VENDOR_ID_HP &&
7444 subsystem_vendor_id != PCI_VENDOR_ID_COMPAQ) ||
7446 dev_warn(&pdev->dev, "unrecognized board ID: "
7447 "0x%08x, ignoring.\n", *board_id);
7450 return ARRAY_SIZE(products) - 1; /* generic unknown smart array */
7453 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
7454 unsigned long *memory_bar)
7458 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++)
7459 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
7460 /* addressing mode bits already removed */
7461 *memory_bar = pci_resource_start(pdev, i);
7462 dev_dbg(&pdev->dev, "memory BAR = %lx\n",
7466 dev_warn(&pdev->dev, "no memory BAR found\n");
7470 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
7476 iterations = HPSA_BOARD_READY_ITERATIONS;
7478 iterations = HPSA_BOARD_NOT_READY_ITERATIONS;
7480 for (i = 0; i < iterations; i++) {
7481 scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET);
7482 if (wait_for_ready) {
7483 if (scratchpad == HPSA_FIRMWARE_READY)
7486 if (scratchpad != HPSA_FIRMWARE_READY)
7489 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
7491 dev_warn(&pdev->dev, "board not ready, timed out.\n");
7495 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
7496 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
7499 *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET);
7500 *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET);
7501 *cfg_base_addr &= (u32) 0x0000ffff;
7502 *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr);
7503 if (*cfg_base_addr_index == -1) {
7504 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n");
7510 static void hpsa_free_cfgtables(struct ctlr_info *h)
7512 if (h->transtable) {
7513 iounmap(h->transtable);
7514 h->transtable = NULL;
7517 iounmap(h->cfgtable);
7522 /* Find and map CISS config table and transfer table
7523 + * several items must be unmapped (freed) later
7525 static int hpsa_find_cfgtables(struct ctlr_info *h)
7529 u64 cfg_base_addr_index;
7533 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
7534 &cfg_base_addr_index, &cfg_offset);
7537 h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
7538 cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable));
7540 dev_err(&h->pdev->dev, "Failed mapping cfgtable\n");
7543 rc = write_driver_ver_to_cfgtable(h->cfgtable);
7546 /* Find performant mode table. */
7547 trans_offset = readl(&h->cfgtable->TransMethodOffset);
7548 h->transtable = remap_pci_mem(pci_resource_start(h->pdev,
7549 cfg_base_addr_index)+cfg_offset+trans_offset,
7550 sizeof(*h->transtable));
7551 if (!h->transtable) {
7552 dev_err(&h->pdev->dev, "Failed mapping transfer table\n");
7553 hpsa_free_cfgtables(h);
7559 static void hpsa_get_max_perf_mode_cmds(struct ctlr_info *h)
7561 #define MIN_MAX_COMMANDS 16
7562 BUILD_BUG_ON(MIN_MAX_COMMANDS <= HPSA_NRESERVED_CMDS);
7564 h->max_commands = readl(&h->cfgtable->MaxPerformantModeCommands);
7566 /* Limit commands in memory limited kdump scenario. */
7567 if (reset_devices && h->max_commands > 32)
7568 h->max_commands = 32;
7570 if (h->max_commands < MIN_MAX_COMMANDS) {
7571 dev_warn(&h->pdev->dev,
7572 "Controller reports max supported commands of %d Using %d instead. Ensure that firmware is up to date.\n",
7575 h->max_commands = MIN_MAX_COMMANDS;
7579 /* If the controller reports that the total max sg entries is greater than 512,
7580 * then we know that chained SG blocks work. (Original smart arrays did not
7581 * support chained SG blocks and would return zero for max sg entries.)
7583 static int hpsa_supports_chained_sg_blocks(struct ctlr_info *h)
7585 return h->maxsgentries > 512;
7588 /* Interrogate the hardware for some limits:
7589 * max commands, max SG elements without chaining, and with chaining,
7590 * SG chain block size, etc.
7592 static void hpsa_find_board_params(struct ctlr_info *h)
7594 hpsa_get_max_perf_mode_cmds(h);
7595 h->nr_cmds = h->max_commands;
7596 h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements));
7597 h->fw_support = readl(&(h->cfgtable->misc_fw_support));
7598 if (hpsa_supports_chained_sg_blocks(h)) {
7599 /* Limit in-command s/g elements to 32 save dma'able memory. */
7600 h->max_cmd_sg_entries = 32;
7601 h->chainsize = h->maxsgentries - h->max_cmd_sg_entries;
7602 h->maxsgentries--; /* save one for chain pointer */
7605 * Original smart arrays supported at most 31 s/g entries
7606 * embedded inline in the command (trying to use more
7607 * would lock up the controller)
7609 h->max_cmd_sg_entries = 31;
7610 h->maxsgentries = 31; /* default to traditional values */
7614 /* Find out what task management functions are supported and cache */
7615 h->TMFSupportFlags = readl(&(h->cfgtable->TMFSupportFlags));
7616 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags))
7617 dev_warn(&h->pdev->dev, "Physical aborts not supported\n");
7618 if (!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
7619 dev_warn(&h->pdev->dev, "Logical aborts not supported\n");
7620 if (!(HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags))
7621 dev_warn(&h->pdev->dev, "HP SSD Smart Path aborts not supported\n");
7624 static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)
7626 if (!check_signature(h->cfgtable->Signature, "CISS", 4)) {
7627 dev_err(&h->pdev->dev, "not a valid CISS config table\n");
7633 static inline void hpsa_set_driver_support_bits(struct ctlr_info *h)
7637 driver_support = readl(&(h->cfgtable->driver_support));
7638 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
7640 driver_support |= ENABLE_SCSI_PREFETCH;
7642 driver_support |= ENABLE_UNIT_ATTN;
7643 writel(driver_support, &(h->cfgtable->driver_support));
7646 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
7647 * in a prefetch beyond physical memory.
7649 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h)
7653 if (h->board_id != 0x3225103C)
7655 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
7656 dma_prefetch |= 0x8000;
7657 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
7660 static int hpsa_wait_for_clear_event_notify_ack(struct ctlr_info *h)
7664 unsigned long flags;
7665 /* wait until the clear_event_notify bit 6 is cleared by controller. */
7666 for (i = 0; i < MAX_CLEAR_EVENT_WAIT; i++) {
7667 spin_lock_irqsave(&h->lock, flags);
7668 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7669 spin_unlock_irqrestore(&h->lock, flags);
7670 if (!(doorbell_value & DOORBELL_CLEAR_EVENTS))
7672 /* delay and try again */
7673 msleep(CLEAR_EVENT_WAIT_INTERVAL);
7680 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h)
7684 unsigned long flags;
7686 /* under certain very rare conditions, this can take awhile.
7687 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
7688 * as we enter this code.)
7690 for (i = 0; i < MAX_MODE_CHANGE_WAIT; i++) {
7691 if (h->remove_in_progress)
7693 spin_lock_irqsave(&h->lock, flags);
7694 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7695 spin_unlock_irqrestore(&h->lock, flags);
7696 if (!(doorbell_value & CFGTBL_ChangeReq))
7698 /* delay and try again */
7699 msleep(MODE_CHANGE_WAIT_INTERVAL);
7706 /* return -ENODEV or other reason on error, 0 on success */
7707 static int hpsa_enter_simple_mode(struct ctlr_info *h)
7711 trans_support = readl(&(h->cfgtable->TransportSupport));
7712 if (!(trans_support & SIMPLE_MODE))
7715 h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
7717 /* Update the field, and then ring the doorbell */
7718 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
7719 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
7720 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
7721 if (hpsa_wait_for_mode_change_ack(h))
7723 print_cfg_table(&h->pdev->dev, h->cfgtable);
7724 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
7726 h->transMethod = CFGTBL_Trans_Simple;
7729 dev_err(&h->pdev->dev, "failed to enter simple mode\n");
7733 /* free items allocated or mapped by hpsa_pci_init */
7734 static void hpsa_free_pci_init(struct ctlr_info *h)
7736 hpsa_free_cfgtables(h); /* pci_init 4 */
7737 iounmap(h->vaddr); /* pci_init 3 */
7739 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
7741 * call pci_disable_device before pci_release_regions per
7742 * Documentation/PCI/pci.txt
7744 pci_disable_device(h->pdev); /* pci_init 1 */
7745 pci_release_regions(h->pdev); /* pci_init 2 */
7748 /* several items must be freed later */
7749 static int hpsa_pci_init(struct ctlr_info *h)
7751 int prod_index, err;
7753 prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id);
7756 h->product_name = products[prod_index].product_name;
7757 h->access = *(products[prod_index].access);
7759 h->needs_abort_tags_swizzled =
7760 ctlr_needs_abort_tags_swizzled(h->board_id);
7762 pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S |
7763 PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
7765 err = pci_enable_device(h->pdev);
7767 dev_err(&h->pdev->dev, "failed to enable PCI device\n");
7768 pci_disable_device(h->pdev);
7772 err = pci_request_regions(h->pdev, HPSA);
7774 dev_err(&h->pdev->dev,
7775 "failed to obtain PCI resources\n");
7776 pci_disable_device(h->pdev);
7780 pci_set_master(h->pdev);
7782 hpsa_interrupt_mode(h);
7783 err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr);
7785 goto clean2; /* intmode+region, pci */
7786 h->vaddr = remap_pci_mem(h->paddr, 0x250);
7788 dev_err(&h->pdev->dev, "failed to remap PCI mem\n");
7790 goto clean2; /* intmode+region, pci */
7792 err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
7794 goto clean3; /* vaddr, intmode+region, pci */
7795 err = hpsa_find_cfgtables(h);
7797 goto clean3; /* vaddr, intmode+region, pci */
7798 hpsa_find_board_params(h);
7800 if (!hpsa_CISS_signature_present(h)) {
7802 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
7804 hpsa_set_driver_support_bits(h);
7805 hpsa_p600_dma_prefetch_quirk(h);
7806 err = hpsa_enter_simple_mode(h);
7808 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
7811 clean4: /* cfgtables, vaddr, intmode+region, pci */
7812 hpsa_free_cfgtables(h);
7813 clean3: /* vaddr, intmode+region, pci */
7816 clean2: /* intmode+region, pci */
7817 hpsa_disable_interrupt_mode(h);
7819 * call pci_disable_device before pci_release_regions per
7820 * Documentation/PCI/pci.txt
7822 pci_disable_device(h->pdev);
7823 pci_release_regions(h->pdev);
7827 static void hpsa_hba_inquiry(struct ctlr_info *h)
7831 #define HBA_INQUIRY_BYTE_COUNT 64
7832 h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL);
7833 if (!h->hba_inquiry_data)
7835 rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0,
7836 h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT);
7838 kfree(h->hba_inquiry_data);
7839 h->hba_inquiry_data = NULL;
7843 static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id)
7846 void __iomem *vaddr;
7851 /* kdump kernel is loading, we don't know in which state is
7852 * the pci interface. The dev->enable_cnt is equal zero
7853 * so we call enable+disable, wait a while and switch it on.
7855 rc = pci_enable_device(pdev);
7857 dev_warn(&pdev->dev, "Failed to enable PCI device\n");
7860 pci_disable_device(pdev);
7861 msleep(260); /* a randomly chosen number */
7862 rc = pci_enable_device(pdev);
7864 dev_warn(&pdev->dev, "failed to enable device.\n");
7868 pci_set_master(pdev);
7870 vaddr = pci_ioremap_bar(pdev, 0);
7871 if (vaddr == NULL) {
7875 writel(SA5_INTR_OFF, vaddr + SA5_REPLY_INTR_MASK_OFFSET);
7878 /* Reset the controller with a PCI power-cycle or via doorbell */
7879 rc = hpsa_kdump_hard_reset_controller(pdev, board_id);
7881 /* -ENOTSUPP here means we cannot reset the controller
7882 * but it's already (and still) up and running in
7883 * "performant mode". Or, it might be 640x, which can't reset
7884 * due to concerns about shared bbwc between 6402/6404 pair.
7889 /* Now try to get the controller to respond to a no-op */
7890 dev_info(&pdev->dev, "Waiting for controller to respond to no-op\n");
7891 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) {
7892 if (hpsa_noop(pdev) == 0)
7895 dev_warn(&pdev->dev, "no-op failed%s\n",
7896 (i < 11 ? "; re-trying" : ""));
7901 pci_disable_device(pdev);
7905 static void hpsa_free_cmd_pool(struct ctlr_info *h)
7907 kfree(h->cmd_pool_bits);
7908 h->cmd_pool_bits = NULL;
7910 pci_free_consistent(h->pdev,
7911 h->nr_cmds * sizeof(struct CommandList),
7913 h->cmd_pool_dhandle);
7915 h->cmd_pool_dhandle = 0;
7917 if (h->errinfo_pool) {
7918 pci_free_consistent(h->pdev,
7919 h->nr_cmds * sizeof(struct ErrorInfo),
7921 h->errinfo_pool_dhandle);
7922 h->errinfo_pool = NULL;
7923 h->errinfo_pool_dhandle = 0;
7927 static int hpsa_alloc_cmd_pool(struct ctlr_info *h)
7929 h->cmd_pool_bits = kzalloc(
7930 DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) *
7931 sizeof(unsigned long), GFP_KERNEL);
7932 h->cmd_pool = pci_alloc_consistent(h->pdev,
7933 h->nr_cmds * sizeof(*h->cmd_pool),
7934 &(h->cmd_pool_dhandle));
7935 h->errinfo_pool = pci_alloc_consistent(h->pdev,
7936 h->nr_cmds * sizeof(*h->errinfo_pool),
7937 &(h->errinfo_pool_dhandle));
7938 if ((h->cmd_pool_bits == NULL)
7939 || (h->cmd_pool == NULL)
7940 || (h->errinfo_pool == NULL)) {
7941 dev_err(&h->pdev->dev, "out of memory in %s", __func__);
7944 hpsa_preinitialize_commands(h);
7947 hpsa_free_cmd_pool(h);
7951 static void hpsa_irq_affinity_hints(struct ctlr_info *h)
7955 cpu = cpumask_first(cpu_online_mask);
7956 for (i = 0; i < h->msix_vector; i++) {
7957 irq_set_affinity_hint(h->intr[i], get_cpu_mask(cpu));
7958 cpu = cpumask_next(cpu, cpu_online_mask);
7962 /* clear affinity hints and free MSI-X, MSI, or legacy INTx vectors */
7963 static void hpsa_free_irqs(struct ctlr_info *h)
7967 if (!h->msix_vector || h->intr_mode != PERF_MODE_INT) {
7968 /* Single reply queue, only one irq to free */
7970 irq_set_affinity_hint(h->intr[i], NULL);
7971 free_irq(h->intr[i], &h->q[i]);
7976 for (i = 0; i < h->msix_vector; i++) {
7977 irq_set_affinity_hint(h->intr[i], NULL);
7978 free_irq(h->intr[i], &h->q[i]);
7981 for (; i < MAX_REPLY_QUEUES; i++)
7985 /* returns 0 on success; cleans up and returns -Enn on error */
7986 static int hpsa_request_irqs(struct ctlr_info *h,
7987 irqreturn_t (*msixhandler)(int, void *),
7988 irqreturn_t (*intxhandler)(int, void *))
7993 * initialize h->q[x] = x so that interrupt handlers know which
7996 for (i = 0; i < MAX_REPLY_QUEUES; i++)
7999 if (h->intr_mode == PERF_MODE_INT && h->msix_vector > 0) {
8000 /* If performant mode and MSI-X, use multiple reply queues */
8001 for (i = 0; i < h->msix_vector; i++) {
8002 sprintf(h->intrname[i], "%s-msix%d", h->devname, i);
8003 rc = request_irq(h->intr[i], msixhandler,
8009 dev_err(&h->pdev->dev,
8010 "failed to get irq %d for %s\n",
8011 h->intr[i], h->devname);
8012 for (j = 0; j < i; j++) {
8013 free_irq(h->intr[j], &h->q[j]);
8016 for (; j < MAX_REPLY_QUEUES; j++)
8021 hpsa_irq_affinity_hints(h);
8023 /* Use single reply pool */
8024 if (h->msix_vector > 0 || h->msi_vector) {
8026 sprintf(h->intrname[h->intr_mode],
8027 "%s-msix", h->devname);
8029 sprintf(h->intrname[h->intr_mode],
8030 "%s-msi", h->devname);
8031 rc = request_irq(h->intr[h->intr_mode],
8033 h->intrname[h->intr_mode],
8034 &h->q[h->intr_mode]);
8036 sprintf(h->intrname[h->intr_mode],
8037 "%s-intx", h->devname);
8038 rc = request_irq(h->intr[h->intr_mode],
8039 intxhandler, IRQF_SHARED,
8040 h->intrname[h->intr_mode],
8041 &h->q[h->intr_mode]);
8043 irq_set_affinity_hint(h->intr[h->intr_mode], NULL);
8046 dev_err(&h->pdev->dev, "failed to get irq %d for %s\n",
8047 h->intr[h->intr_mode], h->devname);
8054 static int hpsa_kdump_soft_reset(struct ctlr_info *h)
8057 hpsa_send_host_reset(h, RAID_CTLR_LUNID, HPSA_RESET_TYPE_CONTROLLER);
8059 dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n");
8060 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY);
8062 dev_warn(&h->pdev->dev, "Soft reset had no effect.\n");
8066 dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n");
8067 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
8069 dev_warn(&h->pdev->dev, "Board failed to become ready "
8070 "after soft reset.\n");
8077 static void hpsa_free_reply_queues(struct ctlr_info *h)
8081 for (i = 0; i < h->nreply_queues; i++) {
8082 if (!h->reply_queue[i].head)
8084 pci_free_consistent(h->pdev,
8085 h->reply_queue_size,
8086 h->reply_queue[i].head,
8087 h->reply_queue[i].busaddr);
8088 h->reply_queue[i].head = NULL;
8089 h->reply_queue[i].busaddr = 0;
8091 h->reply_queue_size = 0;
8094 static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h)
8096 hpsa_free_performant_mode(h); /* init_one 7 */
8097 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
8098 hpsa_free_cmd_pool(h); /* init_one 5 */
8099 hpsa_free_irqs(h); /* init_one 4 */
8100 scsi_host_put(h->scsi_host); /* init_one 3 */
8101 h->scsi_host = NULL; /* init_one 3 */
8102 hpsa_free_pci_init(h); /* init_one 2_5 */
8103 free_percpu(h->lockup_detected); /* init_one 2 */
8104 h->lockup_detected = NULL; /* init_one 2 */
8105 if (h->resubmit_wq) {
8106 destroy_workqueue(h->resubmit_wq); /* init_one 1 */
8107 h->resubmit_wq = NULL;
8109 if (h->rescan_ctlr_wq) {
8110 destroy_workqueue(h->rescan_ctlr_wq);
8111 h->rescan_ctlr_wq = NULL;
8113 kfree(h); /* init_one 1 */
8116 /* Called when controller lockup detected. */
8117 static void fail_all_outstanding_cmds(struct ctlr_info *h)
8120 struct CommandList *c;
8123 flush_workqueue(h->resubmit_wq); /* ensure all cmds are fully built */
8124 for (i = 0; i < h->nr_cmds; i++) {
8125 c = h->cmd_pool + i;
8126 refcount = atomic_inc_return(&c->refcount);
8128 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
8130 atomic_dec(&h->commands_outstanding);
8135 dev_warn(&h->pdev->dev,
8136 "failed %d commands in fail_all\n", failcount);
8139 static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value)
8143 for_each_online_cpu(cpu) {
8144 u32 *lockup_detected;
8145 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
8146 *lockup_detected = value;
8148 wmb(); /* be sure the per-cpu variables are out to memory */
8151 static void controller_lockup_detected(struct ctlr_info *h)
8153 unsigned long flags;
8154 u32 lockup_detected;
8156 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8157 spin_lock_irqsave(&h->lock, flags);
8158 lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
8159 if (!lockup_detected) {
8160 /* no heartbeat, but controller gave us a zero. */
8161 dev_warn(&h->pdev->dev,
8162 "lockup detected after %d but scratchpad register is zero\n",
8163 h->heartbeat_sample_interval / HZ);
8164 lockup_detected = 0xffffffff;
8166 set_lockup_detected_for_all_cpus(h, lockup_detected);
8167 spin_unlock_irqrestore(&h->lock, flags);
8168 dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x after %d\n",
8169 lockup_detected, h->heartbeat_sample_interval / HZ);
8170 pci_disable_device(h->pdev);
8171 fail_all_outstanding_cmds(h);
8174 static int detect_controller_lockup(struct ctlr_info *h)
8178 unsigned long flags;
8180 now = get_jiffies_64();
8181 /* If we've received an interrupt recently, we're ok. */
8182 if (time_after64(h->last_intr_timestamp +
8183 (h->heartbeat_sample_interval), now))
8187 * If we've already checked the heartbeat recently, we're ok.
8188 * This could happen if someone sends us a signal. We
8189 * otherwise don't care about signals in this thread.
8191 if (time_after64(h->last_heartbeat_timestamp +
8192 (h->heartbeat_sample_interval), now))
8195 /* If heartbeat has not changed since we last looked, we're not ok. */
8196 spin_lock_irqsave(&h->lock, flags);
8197 heartbeat = readl(&h->cfgtable->HeartBeat);
8198 spin_unlock_irqrestore(&h->lock, flags);
8199 if (h->last_heartbeat == heartbeat) {
8200 controller_lockup_detected(h);
8205 h->last_heartbeat = heartbeat;
8206 h->last_heartbeat_timestamp = now;
8210 static void hpsa_ack_ctlr_events(struct ctlr_info *h)
8215 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
8218 /* Ask the controller to clear the events we're handling. */
8219 if ((h->transMethod & (CFGTBL_Trans_io_accel1
8220 | CFGTBL_Trans_io_accel2)) &&
8221 (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE ||
8222 h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)) {
8224 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE)
8225 event_type = "state change";
8226 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)
8227 event_type = "configuration change";
8228 /* Stop sending new RAID offload reqs via the IO accelerator */
8229 scsi_block_requests(h->scsi_host);
8230 for (i = 0; i < h->ndevices; i++)
8231 h->dev[i]->offload_enabled = 0;
8232 hpsa_drain_accel_commands(h);
8233 /* Set 'accelerator path config change' bit */
8234 dev_warn(&h->pdev->dev,
8235 "Acknowledging event: 0x%08x (HP SSD Smart Path %s)\n",
8236 h->events, event_type);
8237 writel(h->events, &(h->cfgtable->clear_event_notify));
8238 /* Set the "clear event notify field update" bit 6 */
8239 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
8240 /* Wait until ctlr clears 'clear event notify field', bit 6 */
8241 hpsa_wait_for_clear_event_notify_ack(h);
8242 scsi_unblock_requests(h->scsi_host);
8244 /* Acknowledge controller notification events. */
8245 writel(h->events, &(h->cfgtable->clear_event_notify));
8246 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
8247 hpsa_wait_for_clear_event_notify_ack(h);
8249 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
8250 hpsa_wait_for_mode_change_ack(h);
8256 /* Check a register on the controller to see if there are configuration
8257 * changes (added/changed/removed logical drives, etc.) which mean that
8258 * we should rescan the controller for devices.
8259 * Also check flag for driver-initiated rescan.
8261 static int hpsa_ctlr_needs_rescan(struct ctlr_info *h)
8263 if (h->drv_req_rescan) {
8264 h->drv_req_rescan = 0;
8268 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
8271 h->events = readl(&(h->cfgtable->event_notify));
8272 return h->events & RESCAN_REQUIRED_EVENT_BITS;
8276 * Check if any of the offline devices have become ready
8278 static int hpsa_offline_devices_ready(struct ctlr_info *h)
8280 unsigned long flags;
8281 struct offline_device_entry *d;
8282 struct list_head *this, *tmp;
8284 spin_lock_irqsave(&h->offline_device_lock, flags);
8285 list_for_each_safe(this, tmp, &h->offline_device_list) {
8286 d = list_entry(this, struct offline_device_entry,
8288 spin_unlock_irqrestore(&h->offline_device_lock, flags);
8289 if (!hpsa_volume_offline(h, d->scsi3addr)) {
8290 spin_lock_irqsave(&h->offline_device_lock, flags);
8291 list_del(&d->offline_list);
8292 spin_unlock_irqrestore(&h->offline_device_lock, flags);
8295 spin_lock_irqsave(&h->offline_device_lock, flags);
8297 spin_unlock_irqrestore(&h->offline_device_lock, flags);
8301 static int hpsa_luns_changed(struct ctlr_info *h)
8303 int rc = 1; /* assume there are changes */
8304 struct ReportLUNdata *logdev = NULL;
8306 /* if we can't find out if lun data has changed,
8307 * assume that it has.
8310 if (!h->lastlogicals)
8313 logdev = kzalloc(sizeof(*logdev), GFP_KERNEL);
8315 dev_warn(&h->pdev->dev,
8316 "Out of memory, can't track lun changes.\n");
8319 if (hpsa_scsi_do_report_luns(h, 1, logdev, sizeof(*logdev), 0)) {
8320 dev_warn(&h->pdev->dev,
8321 "report luns failed, can't track lun changes.\n");
8324 if (memcmp(logdev, h->lastlogicals, sizeof(*logdev))) {
8325 dev_info(&h->pdev->dev,
8326 "Lun changes detected.\n");
8327 memcpy(h->lastlogicals, logdev, sizeof(*logdev));
8330 rc = 0; /* no changes detected. */
8336 static void hpsa_rescan_ctlr_worker(struct work_struct *work)
8338 unsigned long flags;
8339 struct ctlr_info *h = container_of(to_delayed_work(work),
8340 struct ctlr_info, rescan_ctlr_work);
8343 if (h->remove_in_progress)
8346 if (hpsa_ctlr_needs_rescan(h) || hpsa_offline_devices_ready(h)) {
8347 scsi_host_get(h->scsi_host);
8348 hpsa_ack_ctlr_events(h);
8349 hpsa_scan_start(h->scsi_host);
8350 scsi_host_put(h->scsi_host);
8351 } else if (h->discovery_polling) {
8352 hpsa_disable_rld_caching(h);
8353 if (hpsa_luns_changed(h)) {
8354 struct Scsi_Host *sh = NULL;
8356 dev_info(&h->pdev->dev,
8357 "driver discovery polling rescan.\n");
8358 sh = scsi_host_get(h->scsi_host);
8360 hpsa_scan_start(sh);
8365 spin_lock_irqsave(&h->lock, flags);
8366 if (!h->remove_in_progress)
8367 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
8368 h->heartbeat_sample_interval);
8369 spin_unlock_irqrestore(&h->lock, flags);
8372 static void hpsa_monitor_ctlr_worker(struct work_struct *work)
8374 unsigned long flags;
8375 struct ctlr_info *h = container_of(to_delayed_work(work),
8376 struct ctlr_info, monitor_ctlr_work);
8378 detect_controller_lockup(h);
8379 if (lockup_detected(h))
8382 spin_lock_irqsave(&h->lock, flags);
8383 if (!h->remove_in_progress)
8384 schedule_delayed_work(&h->monitor_ctlr_work,
8385 h->heartbeat_sample_interval);
8386 spin_unlock_irqrestore(&h->lock, flags);
8389 static struct workqueue_struct *hpsa_create_controller_wq(struct ctlr_info *h,
8392 struct workqueue_struct *wq = NULL;
8394 wq = alloc_ordered_workqueue("%s_%d_hpsa", 0, name, h->ctlr);
8396 dev_err(&h->pdev->dev, "failed to create %s workqueue\n", name);
8401 static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
8404 struct ctlr_info *h;
8405 int try_soft_reset = 0;
8406 unsigned long flags;
8409 if (number_of_controllers == 0)
8410 printk(KERN_INFO DRIVER_NAME "\n");
8412 rc = hpsa_lookup_board_id(pdev, &board_id);
8414 dev_warn(&pdev->dev, "Board ID not found\n");
8418 rc = hpsa_init_reset_devices(pdev, board_id);
8420 if (rc != -ENOTSUPP)
8422 /* If the reset fails in a particular way (it has no way to do
8423 * a proper hard reset, so returns -ENOTSUPP) we can try to do
8424 * a soft reset once we get the controller configured up to the
8425 * point that it can accept a command.
8431 reinit_after_soft_reset:
8433 /* Command structures must be aligned on a 32-byte boundary because
8434 * the 5 lower bits of the address are used by the hardware. and by
8435 * the driver. See comments in hpsa.h for more info.
8437 BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT);
8438 h = kzalloc(sizeof(*h), GFP_KERNEL);
8440 dev_err(&pdev->dev, "Failed to allocate controller head\n");
8446 h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT;
8447 INIT_LIST_HEAD(&h->offline_device_list);
8448 spin_lock_init(&h->lock);
8449 spin_lock_init(&h->offline_device_lock);
8450 spin_lock_init(&h->scan_lock);
8451 atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS);
8452 atomic_set(&h->abort_cmds_available, HPSA_CMDS_RESERVED_FOR_ABORTS);
8454 /* Allocate and clear per-cpu variable lockup_detected */
8455 h->lockup_detected = alloc_percpu(u32);
8456 if (!h->lockup_detected) {
8457 dev_err(&h->pdev->dev, "Failed to allocate lockup detector\n");
8459 goto clean1; /* aer/h */
8461 set_lockup_detected_for_all_cpus(h, 0);
8463 rc = hpsa_pci_init(h);
8465 goto clean2; /* lu, aer/h */
8467 /* relies on h-> settings made by hpsa_pci_init, including
8468 * interrupt_mode h->intr */
8469 rc = hpsa_scsi_host_alloc(h);
8471 goto clean2_5; /* pci, lu, aer/h */
8473 sprintf(h->devname, HPSA "%d", h->scsi_host->host_no);
8474 h->ctlr = number_of_controllers;
8475 number_of_controllers++;
8477 /* configure PCI DMA stuff */
8478 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
8482 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8486 dev_err(&pdev->dev, "no suitable DMA available\n");
8487 goto clean3; /* shost, pci, lu, aer/h */
8491 /* make sure the board interrupts are off */
8492 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8494 rc = hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx);
8496 goto clean3; /* shost, pci, lu, aer/h */
8497 rc = hpsa_alloc_cmd_pool(h);
8499 goto clean4; /* irq, shost, pci, lu, aer/h */
8500 rc = hpsa_alloc_sg_chain_blocks(h);
8502 goto clean5; /* cmd, irq, shost, pci, lu, aer/h */
8503 init_waitqueue_head(&h->scan_wait_queue);
8504 init_waitqueue_head(&h->abort_cmd_wait_queue);
8505 init_waitqueue_head(&h->event_sync_wait_queue);
8506 mutex_init(&h->reset_mutex);
8507 h->scan_finished = 1; /* no scan currently in progress */
8509 pci_set_drvdata(pdev, h);
8512 spin_lock_init(&h->devlock);
8513 rc = hpsa_put_ctlr_into_performant_mode(h);
8515 goto clean6; /* sg, cmd, irq, shost, pci, lu, aer/h */
8517 /* hook into SCSI subsystem */
8518 rc = hpsa_scsi_add_host(h);
8520 goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
8522 /* create the resubmit workqueue */
8523 h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan");
8524 if (!h->rescan_ctlr_wq) {
8529 h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit");
8530 if (!h->resubmit_wq) {
8532 goto clean7; /* aer/h */
8536 * At this point, the controller is ready to take commands.
8537 * Now, if reset_devices and the hard reset didn't work, try
8538 * the soft reset and see if that works.
8540 if (try_soft_reset) {
8542 /* This is kind of gross. We may or may not get a completion
8543 * from the soft reset command, and if we do, then the value
8544 * from the fifo may or may not be valid. So, we wait 10 secs
8545 * after the reset throwing away any completions we get during
8546 * that time. Unregister the interrupt handler and register
8547 * fake ones to scoop up any residual completions.
8549 spin_lock_irqsave(&h->lock, flags);
8550 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8551 spin_unlock_irqrestore(&h->lock, flags);
8553 rc = hpsa_request_irqs(h, hpsa_msix_discard_completions,
8554 hpsa_intx_discard_completions);
8556 dev_warn(&h->pdev->dev,
8557 "Failed to request_irq after soft reset.\n");
8559 * cannot goto clean7 or free_irqs will be called
8560 * again. Instead, do its work
8562 hpsa_free_performant_mode(h); /* clean7 */
8563 hpsa_free_sg_chain_blocks(h); /* clean6 */
8564 hpsa_free_cmd_pool(h); /* clean5 */
8566 * skip hpsa_free_irqs(h) clean4 since that
8567 * was just called before request_irqs failed
8572 rc = hpsa_kdump_soft_reset(h);
8574 /* Neither hard nor soft reset worked, we're hosed. */
8577 dev_info(&h->pdev->dev, "Board READY.\n");
8578 dev_info(&h->pdev->dev,
8579 "Waiting for stale completions to drain.\n");
8580 h->access.set_intr_mask(h, HPSA_INTR_ON);
8582 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8584 rc = controller_reset_failed(h->cfgtable);
8586 dev_info(&h->pdev->dev,
8587 "Soft reset appears to have failed.\n");
8589 /* since the controller's reset, we have to go back and re-init
8590 * everything. Easiest to just forget what we've done and do it
8593 hpsa_undo_allocations_after_kdump_soft_reset(h);
8596 /* don't goto clean, we already unallocated */
8599 goto reinit_after_soft_reset;
8602 /* Enable Accelerated IO path at driver layer */
8603 h->acciopath_status = 1;
8604 /* Disable discovery polling.*/
8605 h->discovery_polling = 0;
8608 /* Turn the interrupts on so we can service requests */
8609 h->access.set_intr_mask(h, HPSA_INTR_ON);
8611 hpsa_hba_inquiry(h);
8613 h->lastlogicals = kzalloc(sizeof(*(h->lastlogicals)), GFP_KERNEL);
8614 if (!h->lastlogicals)
8615 dev_info(&h->pdev->dev,
8616 "Can't track change to report lun data\n");
8618 /* Monitor the controller for firmware lockups */
8619 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
8620 INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker);
8621 schedule_delayed_work(&h->monitor_ctlr_work,
8622 h->heartbeat_sample_interval);
8623 INIT_DELAYED_WORK(&h->rescan_ctlr_work, hpsa_rescan_ctlr_worker);
8624 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
8625 h->heartbeat_sample_interval);
8628 clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
8629 hpsa_free_performant_mode(h);
8630 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8631 clean6: /* sg, cmd, irq, pci, lockup, wq/aer/h */
8632 hpsa_free_sg_chain_blocks(h);
8633 clean5: /* cmd, irq, shost, pci, lu, aer/h */
8634 hpsa_free_cmd_pool(h);
8635 clean4: /* irq, shost, pci, lu, aer/h */
8637 clean3: /* shost, pci, lu, aer/h */
8638 scsi_host_put(h->scsi_host);
8639 h->scsi_host = NULL;
8640 clean2_5: /* pci, lu, aer/h */
8641 hpsa_free_pci_init(h);
8642 clean2: /* lu, aer/h */
8643 if (h->lockup_detected) {
8644 free_percpu(h->lockup_detected);
8645 h->lockup_detected = NULL;
8647 clean1: /* wq/aer/h */
8648 if (h->resubmit_wq) {
8649 destroy_workqueue(h->resubmit_wq);
8650 h->resubmit_wq = NULL;
8652 if (h->rescan_ctlr_wq) {
8653 destroy_workqueue(h->rescan_ctlr_wq);
8654 h->rescan_ctlr_wq = NULL;
8660 static void hpsa_flush_cache(struct ctlr_info *h)
8663 struct CommandList *c;
8666 if (unlikely(lockup_detected(h)))
8668 flush_buf = kzalloc(4, GFP_KERNEL);
8674 if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0,
8675 RAID_CTLR_LUNID, TYPE_CMD)) {
8678 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
8679 PCI_DMA_TODEVICE, NO_TIMEOUT);
8682 if (c->err_info->CommandStatus != 0)
8684 dev_warn(&h->pdev->dev,
8685 "error flushing cache on controller\n");
8690 /* Make controller gather fresh report lun data each time we
8691 * send down a report luns request
8693 static void hpsa_disable_rld_caching(struct ctlr_info *h)
8696 struct CommandList *c;
8699 /* Don't bother trying to set diag options if locked up */
8700 if (unlikely(h->lockup_detected))
8703 options = kzalloc(sizeof(*options), GFP_KERNEL);
8705 dev_err(&h->pdev->dev,
8706 "Error: failed to disable rld caching, during alloc.\n");
8712 /* first, get the current diag options settings */
8713 if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0,
8714 RAID_CTLR_LUNID, TYPE_CMD))
8717 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
8718 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
8719 if ((rc != 0) || (c->err_info->CommandStatus != 0))
8722 /* Now, set the bit for disabling the RLD caching */
8723 *options |= HPSA_DIAG_OPTS_DISABLE_RLD_CACHING;
8725 if (fill_cmd(c, BMIC_SET_DIAG_OPTIONS, h, options, 4, 0,
8726 RAID_CTLR_LUNID, TYPE_CMD))
8729 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
8730 PCI_DMA_TODEVICE, NO_TIMEOUT);
8731 if ((rc != 0) || (c->err_info->CommandStatus != 0))
8734 /* Now verify that it got set: */
8735 if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0,
8736 RAID_CTLR_LUNID, TYPE_CMD))
8739 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
8740 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
8741 if ((rc != 0) || (c->err_info->CommandStatus != 0))
8744 if (*options & HPSA_DIAG_OPTS_DISABLE_RLD_CACHING)
8748 dev_err(&h->pdev->dev,
8749 "Error: failed to disable report lun data caching.\n");
8755 static void hpsa_shutdown(struct pci_dev *pdev)
8757 struct ctlr_info *h;
8759 h = pci_get_drvdata(pdev);
8760 /* Turn board interrupts off and send the flush cache command
8761 * sendcmd will turn off interrupt, and send the flush...
8762 * To write all data in the battery backed cache to disks
8764 hpsa_flush_cache(h);
8765 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8766 hpsa_free_irqs(h); /* init_one 4 */
8767 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
8770 static void hpsa_free_device_info(struct ctlr_info *h)
8774 for (i = 0; i < h->ndevices; i++) {
8780 static void hpsa_remove_one(struct pci_dev *pdev)
8782 struct ctlr_info *h;
8783 unsigned long flags;
8785 if (pci_get_drvdata(pdev) == NULL) {
8786 dev_err(&pdev->dev, "unable to remove device\n");
8789 h = pci_get_drvdata(pdev);
8791 /* Get rid of any controller monitoring work items */
8792 spin_lock_irqsave(&h->lock, flags);
8793 h->remove_in_progress = 1;
8794 spin_unlock_irqrestore(&h->lock, flags);
8795 cancel_delayed_work_sync(&h->monitor_ctlr_work);
8796 cancel_delayed_work_sync(&h->rescan_ctlr_work);
8797 destroy_workqueue(h->rescan_ctlr_wq);
8798 destroy_workqueue(h->resubmit_wq);
8801 * Call before disabling interrupts.
8802 * scsi_remove_host can trigger I/O operations especially
8803 * when multipath is enabled. There can be SYNCHRONIZE CACHE
8804 * operations which cannot complete and will hang the system.
8807 scsi_remove_host(h->scsi_host); /* init_one 8 */
8808 /* includes hpsa_free_irqs - init_one 4 */
8809 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
8810 hpsa_shutdown(pdev);
8812 hpsa_free_device_info(h); /* scan */
8814 kfree(h->hba_inquiry_data); /* init_one 10 */
8815 h->hba_inquiry_data = NULL; /* init_one 10 */
8816 hpsa_free_ioaccel2_sg_chain_blocks(h);
8817 hpsa_free_performant_mode(h); /* init_one 7 */
8818 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
8819 hpsa_free_cmd_pool(h); /* init_one 5 */
8820 kfree(h->lastlogicals);
8822 /* hpsa_free_irqs already called via hpsa_shutdown init_one 4 */
8824 scsi_host_put(h->scsi_host); /* init_one 3 */
8825 h->scsi_host = NULL; /* init_one 3 */
8827 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
8828 hpsa_free_pci_init(h); /* init_one 2.5 */
8830 free_percpu(h->lockup_detected); /* init_one 2 */
8831 h->lockup_detected = NULL; /* init_one 2 */
8832 /* (void) pci_disable_pcie_error_reporting(pdev); */ /* init_one 1 */
8834 hpsa_delete_sas_host(h);
8836 kfree(h); /* init_one 1 */
8839 static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
8840 __attribute__((unused)) pm_message_t state)
8845 static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
8850 static struct pci_driver hpsa_pci_driver = {
8852 .probe = hpsa_init_one,
8853 .remove = hpsa_remove_one,
8854 .id_table = hpsa_pci_device_id, /* id_table */
8855 .shutdown = hpsa_shutdown,
8856 .suspend = hpsa_suspend,
8857 .resume = hpsa_resume,
8860 /* Fill in bucket_map[], given nsgs (the max number of
8861 * scatter gather elements supported) and bucket[],
8862 * which is an array of 8 integers. The bucket[] array
8863 * contains 8 different DMA transfer sizes (in 16
8864 * byte increments) which the controller uses to fetch
8865 * commands. This function fills in bucket_map[], which
8866 * maps a given number of scatter gather elements to one of
8867 * the 8 DMA transfer sizes. The point of it is to allow the
8868 * controller to only do as much DMA as needed to fetch the
8869 * command, with the DMA transfer size encoded in the lower
8870 * bits of the command address.
8872 static void calc_bucket_map(int bucket[], int num_buckets,
8873 int nsgs, int min_blocks, u32 *bucket_map)
8877 /* Note, bucket_map must have nsgs+1 entries. */
8878 for (i = 0; i <= nsgs; i++) {
8879 /* Compute size of a command with i SG entries */
8880 size = i + min_blocks;
8881 b = num_buckets; /* Assume the biggest bucket */
8882 /* Find the bucket that is just big enough */
8883 for (j = 0; j < num_buckets; j++) {
8884 if (bucket[j] >= size) {
8889 /* for a command with i SG entries, use bucket b. */
8895 * return -ENODEV on err, 0 on success (or no action)
8896 * allocates numerous items that must be freed later
8898 static int hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support)
8901 unsigned long register_value;
8902 unsigned long transMethod = CFGTBL_Trans_Performant |
8903 (trans_support & CFGTBL_Trans_use_short_tags) |
8904 CFGTBL_Trans_enable_directed_msix |
8905 (trans_support & (CFGTBL_Trans_io_accel1 |
8906 CFGTBL_Trans_io_accel2));
8907 struct access_method access = SA5_performant_access;
8909 /* This is a bit complicated. There are 8 registers on
8910 * the controller which we write to to tell it 8 different
8911 * sizes of commands which there may be. It's a way of
8912 * reducing the DMA done to fetch each command. Encoded into
8913 * each command's tag are 3 bits which communicate to the controller
8914 * which of the eight sizes that command fits within. The size of
8915 * each command depends on how many scatter gather entries there are.
8916 * Each SG entry requires 16 bytes. The eight registers are programmed
8917 * with the number of 16-byte blocks a command of that size requires.
8918 * The smallest command possible requires 5 such 16 byte blocks.
8919 * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte
8920 * blocks. Note, this only extends to the SG entries contained
8921 * within the command block, and does not extend to chained blocks
8922 * of SG elements. bft[] contains the eight values we write to
8923 * the registers. They are not evenly distributed, but have more
8924 * sizes for small commands, and fewer sizes for larger commands.
8926 int bft[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD + 4};
8927 #define MIN_IOACCEL2_BFT_ENTRY 5
8928 #define HPSA_IOACCEL2_HEADER_SZ 4
8929 int bft2[16] = {MIN_IOACCEL2_BFT_ENTRY, 6, 7, 8, 9, 10, 11, 12,
8930 13, 14, 15, 16, 17, 18, 19,
8931 HPSA_IOACCEL2_HEADER_SZ + IOACCEL2_MAXSGENTRIES};
8932 BUILD_BUG_ON(ARRAY_SIZE(bft2) != 16);
8933 BUILD_BUG_ON(ARRAY_SIZE(bft) != 8);
8934 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) >
8935 16 * MIN_IOACCEL2_BFT_ENTRY);
8936 BUILD_BUG_ON(sizeof(struct ioaccel2_sg_element) != 16);
8937 BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD + 4);
8938 /* 5 = 1 s/g entry or 4k
8939 * 6 = 2 s/g entry or 8k
8940 * 8 = 4 s/g entry or 16k
8941 * 10 = 6 s/g entry or 24k
8944 /* If the controller supports either ioaccel method then
8945 * we can also use the RAID stack submit path that does not
8946 * perform the superfluous readl() after each command submission.
8948 if (trans_support & (CFGTBL_Trans_io_accel1 | CFGTBL_Trans_io_accel2))
8949 access = SA5_performant_access_no_read;
8951 /* Controller spec: zero out this buffer. */
8952 for (i = 0; i < h->nreply_queues; i++)
8953 memset(h->reply_queue[i].head, 0, h->reply_queue_size);
8955 bft[7] = SG_ENTRIES_IN_CMD + 4;
8956 calc_bucket_map(bft, ARRAY_SIZE(bft),
8957 SG_ENTRIES_IN_CMD, 4, h->blockFetchTable);
8958 for (i = 0; i < 8; i++)
8959 writel(bft[i], &h->transtable->BlockFetch[i]);
8961 /* size of controller ring buffer */
8962 writel(h->max_commands, &h->transtable->RepQSize);
8963 writel(h->nreply_queues, &h->transtable->RepQCount);
8964 writel(0, &h->transtable->RepQCtrAddrLow32);
8965 writel(0, &h->transtable->RepQCtrAddrHigh32);
8967 for (i = 0; i < h->nreply_queues; i++) {
8968 writel(0, &h->transtable->RepQAddr[i].upper);
8969 writel(h->reply_queue[i].busaddr,
8970 &h->transtable->RepQAddr[i].lower);
8973 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
8974 writel(transMethod, &(h->cfgtable->HostWrite.TransportRequest));
8976 * enable outbound interrupt coalescing in accelerator mode;
8978 if (trans_support & CFGTBL_Trans_io_accel1) {
8979 access = SA5_ioaccel_mode1_access;
8980 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
8981 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
8983 if (trans_support & CFGTBL_Trans_io_accel2) {
8984 access = SA5_ioaccel_mode2_access;
8985 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
8986 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
8989 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
8990 if (hpsa_wait_for_mode_change_ack(h)) {
8991 dev_err(&h->pdev->dev,
8992 "performant mode problem - doorbell timeout\n");
8995 register_value = readl(&(h->cfgtable->TransportActive));
8996 if (!(register_value & CFGTBL_Trans_Performant)) {
8997 dev_err(&h->pdev->dev,
8998 "performant mode problem - transport not active\n");
9001 /* Change the access methods to the performant access methods */
9003 h->transMethod = transMethod;
9005 if (!((trans_support & CFGTBL_Trans_io_accel1) ||
9006 (trans_support & CFGTBL_Trans_io_accel2)))
9009 if (trans_support & CFGTBL_Trans_io_accel1) {
9010 /* Set up I/O accelerator mode */
9011 for (i = 0; i < h->nreply_queues; i++) {
9012 writel(i, h->vaddr + IOACCEL_MODE1_REPLY_QUEUE_INDEX);
9013 h->reply_queue[i].current_entry =
9014 readl(h->vaddr + IOACCEL_MODE1_PRODUCER_INDEX);
9016 bft[7] = h->ioaccel_maxsg + 8;
9017 calc_bucket_map(bft, ARRAY_SIZE(bft), h->ioaccel_maxsg, 8,
9018 h->ioaccel1_blockFetchTable);
9020 /* initialize all reply queue entries to unused */
9021 for (i = 0; i < h->nreply_queues; i++)
9022 memset(h->reply_queue[i].head,
9023 (u8) IOACCEL_MODE1_REPLY_UNUSED,
9024 h->reply_queue_size);
9026 /* set all the constant fields in the accelerator command
9027 * frames once at init time to save CPU cycles later.
9029 for (i = 0; i < h->nr_cmds; i++) {
9030 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[i];
9032 cp->function = IOACCEL1_FUNCTION_SCSIIO;
9033 cp->err_info = (u32) (h->errinfo_pool_dhandle +
9034 (i * sizeof(struct ErrorInfo)));
9035 cp->err_info_len = sizeof(struct ErrorInfo);
9036 cp->sgl_offset = IOACCEL1_SGLOFFSET;
9037 cp->host_context_flags =
9038 cpu_to_le16(IOACCEL1_HCFLAGS_CISS_FORMAT);
9039 cp->timeout_sec = 0;
9042 cpu_to_le64((i << DIRECT_LOOKUP_SHIFT));
9044 cpu_to_le64(h->ioaccel_cmd_pool_dhandle +
9045 (i * sizeof(struct io_accel1_cmd)));
9047 } else if (trans_support & CFGTBL_Trans_io_accel2) {
9048 u64 cfg_offset, cfg_base_addr_index;
9049 u32 bft2_offset, cfg_base_addr;
9052 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
9053 &cfg_base_addr_index, &cfg_offset);
9054 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) != 64);
9055 bft2[15] = h->ioaccel_maxsg + HPSA_IOACCEL2_HEADER_SZ;
9056 calc_bucket_map(bft2, ARRAY_SIZE(bft2), h->ioaccel_maxsg,
9057 4, h->ioaccel2_blockFetchTable);
9058 bft2_offset = readl(&h->cfgtable->io_accel_request_size_offset);
9059 BUILD_BUG_ON(offsetof(struct CfgTable,
9060 io_accel_request_size_offset) != 0xb8);
9061 h->ioaccel2_bft2_regs =
9062 remap_pci_mem(pci_resource_start(h->pdev,
9063 cfg_base_addr_index) +
9064 cfg_offset + bft2_offset,
9066 sizeof(*h->ioaccel2_bft2_regs));
9067 for (i = 0; i < ARRAY_SIZE(bft2); i++)
9068 writel(bft2[i], &h->ioaccel2_bft2_regs[i]);
9070 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
9071 if (hpsa_wait_for_mode_change_ack(h)) {
9072 dev_err(&h->pdev->dev,
9073 "performant mode problem - enabling ioaccel mode\n");
9079 /* Free ioaccel1 mode command blocks and block fetch table */
9080 static void hpsa_free_ioaccel1_cmd_and_bft(struct ctlr_info *h)
9082 if (h->ioaccel_cmd_pool) {
9083 pci_free_consistent(h->pdev,
9084 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
9085 h->ioaccel_cmd_pool,
9086 h->ioaccel_cmd_pool_dhandle);
9087 h->ioaccel_cmd_pool = NULL;
9088 h->ioaccel_cmd_pool_dhandle = 0;
9090 kfree(h->ioaccel1_blockFetchTable);
9091 h->ioaccel1_blockFetchTable = NULL;
9094 /* Allocate ioaccel1 mode command blocks and block fetch table */
9095 static int hpsa_alloc_ioaccel1_cmd_and_bft(struct ctlr_info *h)
9098 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
9099 if (h->ioaccel_maxsg > IOACCEL1_MAXSGENTRIES)
9100 h->ioaccel_maxsg = IOACCEL1_MAXSGENTRIES;
9102 /* Command structures must be aligned on a 128-byte boundary
9103 * because the 7 lower bits of the address are used by the
9106 BUILD_BUG_ON(sizeof(struct io_accel1_cmd) %
9107 IOACCEL1_COMMANDLIST_ALIGNMENT);
9108 h->ioaccel_cmd_pool =
9109 pci_alloc_consistent(h->pdev,
9110 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
9111 &(h->ioaccel_cmd_pool_dhandle));
9113 h->ioaccel1_blockFetchTable =
9114 kmalloc(((h->ioaccel_maxsg + 1) *
9115 sizeof(u32)), GFP_KERNEL);
9117 if ((h->ioaccel_cmd_pool == NULL) ||
9118 (h->ioaccel1_blockFetchTable == NULL))
9121 memset(h->ioaccel_cmd_pool, 0,
9122 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool));
9126 hpsa_free_ioaccel1_cmd_and_bft(h);
9130 /* Free ioaccel2 mode command blocks and block fetch table */
9131 static void hpsa_free_ioaccel2_cmd_and_bft(struct ctlr_info *h)
9133 hpsa_free_ioaccel2_sg_chain_blocks(h);
9135 if (h->ioaccel2_cmd_pool) {
9136 pci_free_consistent(h->pdev,
9137 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
9138 h->ioaccel2_cmd_pool,
9139 h->ioaccel2_cmd_pool_dhandle);
9140 h->ioaccel2_cmd_pool = NULL;
9141 h->ioaccel2_cmd_pool_dhandle = 0;
9143 kfree(h->ioaccel2_blockFetchTable);
9144 h->ioaccel2_blockFetchTable = NULL;
9147 /* Allocate ioaccel2 mode command blocks and block fetch table */
9148 static int hpsa_alloc_ioaccel2_cmd_and_bft(struct ctlr_info *h)
9152 /* Allocate ioaccel2 mode command blocks and block fetch table */
9155 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
9156 if (h->ioaccel_maxsg > IOACCEL2_MAXSGENTRIES)
9157 h->ioaccel_maxsg = IOACCEL2_MAXSGENTRIES;
9159 BUILD_BUG_ON(sizeof(struct io_accel2_cmd) %
9160 IOACCEL2_COMMANDLIST_ALIGNMENT);
9161 h->ioaccel2_cmd_pool =
9162 pci_alloc_consistent(h->pdev,
9163 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
9164 &(h->ioaccel2_cmd_pool_dhandle));
9166 h->ioaccel2_blockFetchTable =
9167 kmalloc(((h->ioaccel_maxsg + 1) *
9168 sizeof(u32)), GFP_KERNEL);
9170 if ((h->ioaccel2_cmd_pool == NULL) ||
9171 (h->ioaccel2_blockFetchTable == NULL)) {
9176 rc = hpsa_allocate_ioaccel2_sg_chain_blocks(h);
9180 memset(h->ioaccel2_cmd_pool, 0,
9181 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool));
9185 hpsa_free_ioaccel2_cmd_and_bft(h);
9189 /* Free items allocated by hpsa_put_ctlr_into_performant_mode */
9190 static void hpsa_free_performant_mode(struct ctlr_info *h)
9192 kfree(h->blockFetchTable);
9193 h->blockFetchTable = NULL;
9194 hpsa_free_reply_queues(h);
9195 hpsa_free_ioaccel1_cmd_and_bft(h);
9196 hpsa_free_ioaccel2_cmd_and_bft(h);
9199 /* return -ENODEV on error, 0 on success (or no action)
9200 * allocates numerous items that must be freed later
9202 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
9205 unsigned long transMethod = CFGTBL_Trans_Performant |
9206 CFGTBL_Trans_use_short_tags;
9209 if (hpsa_simple_mode)
9212 trans_support = readl(&(h->cfgtable->TransportSupport));
9213 if (!(trans_support & PERFORMANT_MODE))
9216 /* Check for I/O accelerator mode support */
9217 if (trans_support & CFGTBL_Trans_io_accel1) {
9218 transMethod |= CFGTBL_Trans_io_accel1 |
9219 CFGTBL_Trans_enable_directed_msix;
9220 rc = hpsa_alloc_ioaccel1_cmd_and_bft(h);
9223 } else if (trans_support & CFGTBL_Trans_io_accel2) {
9224 transMethod |= CFGTBL_Trans_io_accel2 |
9225 CFGTBL_Trans_enable_directed_msix;
9226 rc = hpsa_alloc_ioaccel2_cmd_and_bft(h);
9231 h->nreply_queues = h->msix_vector > 0 ? h->msix_vector : 1;
9232 hpsa_get_max_perf_mode_cmds(h);
9233 /* Performant mode ring buffer and supporting data structures */
9234 h->reply_queue_size = h->max_commands * sizeof(u64);
9236 for (i = 0; i < h->nreply_queues; i++) {
9237 h->reply_queue[i].head = pci_alloc_consistent(h->pdev,
9238 h->reply_queue_size,
9239 &(h->reply_queue[i].busaddr));
9240 if (!h->reply_queue[i].head) {
9242 goto clean1; /* rq, ioaccel */
9244 h->reply_queue[i].size = h->max_commands;
9245 h->reply_queue[i].wraparound = 1; /* spec: init to 1 */
9246 h->reply_queue[i].current_entry = 0;
9249 /* Need a block fetch table for performant mode */
9250 h->blockFetchTable = kmalloc(((SG_ENTRIES_IN_CMD + 1) *
9251 sizeof(u32)), GFP_KERNEL);
9252 if (!h->blockFetchTable) {
9254 goto clean1; /* rq, ioaccel */
9257 rc = hpsa_enter_performant_mode(h, trans_support);
9259 goto clean2; /* bft, rq, ioaccel */
9262 clean2: /* bft, rq, ioaccel */
9263 kfree(h->blockFetchTable);
9264 h->blockFetchTable = NULL;
9265 clean1: /* rq, ioaccel */
9266 hpsa_free_reply_queues(h);
9267 hpsa_free_ioaccel1_cmd_and_bft(h);
9268 hpsa_free_ioaccel2_cmd_and_bft(h);
9272 static int is_accelerated_cmd(struct CommandList *c)
9274 return c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_IOACCEL2;
9277 static void hpsa_drain_accel_commands(struct ctlr_info *h)
9279 struct CommandList *c = NULL;
9280 int i, accel_cmds_out;
9283 do { /* wait for all outstanding ioaccel commands to drain out */
9285 for (i = 0; i < h->nr_cmds; i++) {
9286 c = h->cmd_pool + i;
9287 refcount = atomic_inc_return(&c->refcount);
9288 if (refcount > 1) /* Command is allocated */
9289 accel_cmds_out += is_accelerated_cmd(c);
9292 if (accel_cmds_out <= 0)
9298 static struct hpsa_sas_phy *hpsa_alloc_sas_phy(
9299 struct hpsa_sas_port *hpsa_sas_port)
9301 struct hpsa_sas_phy *hpsa_sas_phy;
9302 struct sas_phy *phy;
9304 hpsa_sas_phy = kzalloc(sizeof(*hpsa_sas_phy), GFP_KERNEL);
9308 phy = sas_phy_alloc(hpsa_sas_port->parent_node->parent_dev,
9309 hpsa_sas_port->next_phy_index);
9311 kfree(hpsa_sas_phy);
9315 hpsa_sas_port->next_phy_index++;
9316 hpsa_sas_phy->phy = phy;
9317 hpsa_sas_phy->parent_port = hpsa_sas_port;
9319 return hpsa_sas_phy;
9322 static void hpsa_free_sas_phy(struct hpsa_sas_phy *hpsa_sas_phy)
9324 struct sas_phy *phy = hpsa_sas_phy->phy;
9326 sas_port_delete_phy(hpsa_sas_phy->parent_port->port, phy);
9328 if (hpsa_sas_phy->added_to_port)
9329 list_del(&hpsa_sas_phy->phy_list_entry);
9330 kfree(hpsa_sas_phy);
9333 static int hpsa_sas_port_add_phy(struct hpsa_sas_phy *hpsa_sas_phy)
9336 struct hpsa_sas_port *hpsa_sas_port;
9337 struct sas_phy *phy;
9338 struct sas_identify *identify;
9340 hpsa_sas_port = hpsa_sas_phy->parent_port;
9341 phy = hpsa_sas_phy->phy;
9343 identify = &phy->identify;
9344 memset(identify, 0, sizeof(*identify));
9345 identify->sas_address = hpsa_sas_port->sas_address;
9346 identify->device_type = SAS_END_DEVICE;
9347 identify->initiator_port_protocols = SAS_PROTOCOL_STP;
9348 identify->target_port_protocols = SAS_PROTOCOL_STP;
9349 phy->minimum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
9350 phy->maximum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
9351 phy->minimum_linkrate = SAS_LINK_RATE_UNKNOWN;
9352 phy->maximum_linkrate = SAS_LINK_RATE_UNKNOWN;
9353 phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
9355 rc = sas_phy_add(hpsa_sas_phy->phy);
9359 sas_port_add_phy(hpsa_sas_port->port, hpsa_sas_phy->phy);
9360 list_add_tail(&hpsa_sas_phy->phy_list_entry,
9361 &hpsa_sas_port->phy_list_head);
9362 hpsa_sas_phy->added_to_port = true;
9368 hpsa_sas_port_add_rphy(struct hpsa_sas_port *hpsa_sas_port,
9369 struct sas_rphy *rphy)
9371 struct sas_identify *identify;
9373 identify = &rphy->identify;
9374 identify->sas_address = hpsa_sas_port->sas_address;
9375 identify->initiator_port_protocols = SAS_PROTOCOL_STP;
9376 identify->target_port_protocols = SAS_PROTOCOL_STP;
9378 return sas_rphy_add(rphy);
9381 static struct hpsa_sas_port
9382 *hpsa_alloc_sas_port(struct hpsa_sas_node *hpsa_sas_node,
9386 struct hpsa_sas_port *hpsa_sas_port;
9387 struct sas_port *port;
9389 hpsa_sas_port = kzalloc(sizeof(*hpsa_sas_port), GFP_KERNEL);
9393 INIT_LIST_HEAD(&hpsa_sas_port->phy_list_head);
9394 hpsa_sas_port->parent_node = hpsa_sas_node;
9396 port = sas_port_alloc_num(hpsa_sas_node->parent_dev);
9398 goto free_hpsa_port;
9400 rc = sas_port_add(port);
9404 hpsa_sas_port->port = port;
9405 hpsa_sas_port->sas_address = sas_address;
9406 list_add_tail(&hpsa_sas_port->port_list_entry,
9407 &hpsa_sas_node->port_list_head);
9409 return hpsa_sas_port;
9412 sas_port_free(port);
9414 kfree(hpsa_sas_port);
9419 static void hpsa_free_sas_port(struct hpsa_sas_port *hpsa_sas_port)
9421 struct hpsa_sas_phy *hpsa_sas_phy;
9422 struct hpsa_sas_phy *next;
9424 list_for_each_entry_safe(hpsa_sas_phy, next,
9425 &hpsa_sas_port->phy_list_head, phy_list_entry)
9426 hpsa_free_sas_phy(hpsa_sas_phy);
9428 sas_port_delete(hpsa_sas_port->port);
9429 list_del(&hpsa_sas_port->port_list_entry);
9430 kfree(hpsa_sas_port);
9433 static struct hpsa_sas_node *hpsa_alloc_sas_node(struct device *parent_dev)
9435 struct hpsa_sas_node *hpsa_sas_node;
9437 hpsa_sas_node = kzalloc(sizeof(*hpsa_sas_node), GFP_KERNEL);
9438 if (hpsa_sas_node) {
9439 hpsa_sas_node->parent_dev = parent_dev;
9440 INIT_LIST_HEAD(&hpsa_sas_node->port_list_head);
9443 return hpsa_sas_node;
9446 static void hpsa_free_sas_node(struct hpsa_sas_node *hpsa_sas_node)
9448 struct hpsa_sas_port *hpsa_sas_port;
9449 struct hpsa_sas_port *next;
9454 list_for_each_entry_safe(hpsa_sas_port, next,
9455 &hpsa_sas_node->port_list_head, port_list_entry)
9456 hpsa_free_sas_port(hpsa_sas_port);
9458 kfree(hpsa_sas_node);
9461 static struct hpsa_scsi_dev_t
9462 *hpsa_find_device_by_sas_rphy(struct ctlr_info *h,
9463 struct sas_rphy *rphy)
9466 struct hpsa_scsi_dev_t *device;
9468 for (i = 0; i < h->ndevices; i++) {
9470 if (!device->sas_port)
9472 if (device->sas_port->rphy == rphy)
9479 static int hpsa_add_sas_host(struct ctlr_info *h)
9482 struct device *parent_dev;
9483 struct hpsa_sas_node *hpsa_sas_node;
9484 struct hpsa_sas_port *hpsa_sas_port;
9485 struct hpsa_sas_phy *hpsa_sas_phy;
9487 parent_dev = &h->scsi_host->shost_gendev;
9489 hpsa_sas_node = hpsa_alloc_sas_node(parent_dev);
9493 hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, h->sas_address);
9494 if (!hpsa_sas_port) {
9499 hpsa_sas_phy = hpsa_alloc_sas_phy(hpsa_sas_port);
9500 if (!hpsa_sas_phy) {
9505 rc = hpsa_sas_port_add_phy(hpsa_sas_phy);
9509 h->sas_host = hpsa_sas_node;
9514 hpsa_free_sas_phy(hpsa_sas_phy);
9516 hpsa_free_sas_port(hpsa_sas_port);
9518 hpsa_free_sas_node(hpsa_sas_node);
9523 static void hpsa_delete_sas_host(struct ctlr_info *h)
9525 hpsa_free_sas_node(h->sas_host);
9528 static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node,
9529 struct hpsa_scsi_dev_t *device)
9532 struct hpsa_sas_port *hpsa_sas_port;
9533 struct sas_rphy *rphy;
9535 hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, device->sas_address);
9539 rphy = sas_end_device_alloc(hpsa_sas_port->port);
9545 hpsa_sas_port->rphy = rphy;
9546 device->sas_port = hpsa_sas_port;
9548 rc = hpsa_sas_port_add_rphy(hpsa_sas_port, rphy);
9555 hpsa_free_sas_port(hpsa_sas_port);
9556 device->sas_port = NULL;
9561 static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device)
9563 if (device->sas_port) {
9564 hpsa_free_sas_port(device->sas_port);
9565 device->sas_port = NULL;
9570 hpsa_sas_get_linkerrors(struct sas_phy *phy)
9576 hpsa_sas_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
9582 hpsa_sas_get_bay_identifier(struct sas_rphy *rphy)
9588 hpsa_sas_phy_reset(struct sas_phy *phy, int hard_reset)
9594 hpsa_sas_phy_enable(struct sas_phy *phy, int enable)
9600 hpsa_sas_phy_setup(struct sas_phy *phy)
9606 hpsa_sas_phy_release(struct sas_phy *phy)
9611 hpsa_sas_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
9616 /* SMP = Serial Management Protocol */
9618 hpsa_sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
9619 struct request *req)
9624 static struct sas_function_template hpsa_sas_transport_functions = {
9625 .get_linkerrors = hpsa_sas_get_linkerrors,
9626 .get_enclosure_identifier = hpsa_sas_get_enclosure_identifier,
9627 .get_bay_identifier = hpsa_sas_get_bay_identifier,
9628 .phy_reset = hpsa_sas_phy_reset,
9629 .phy_enable = hpsa_sas_phy_enable,
9630 .phy_setup = hpsa_sas_phy_setup,
9631 .phy_release = hpsa_sas_phy_release,
9632 .set_phy_speed = hpsa_sas_phy_speed,
9633 .smp_handler = hpsa_sas_smp_handler,
9637 * This is it. Register the PCI driver information for the cards we control
9638 * the OS will call our registered routines when it finds one of our cards.
9640 static int __init hpsa_init(void)
9644 hpsa_sas_transport_template =
9645 sas_attach_transport(&hpsa_sas_transport_functions);
9646 if (!hpsa_sas_transport_template)
9649 rc = pci_register_driver(&hpsa_pci_driver);
9652 sas_release_transport(hpsa_sas_transport_template);
9657 static void __exit hpsa_cleanup(void)
9659 pci_unregister_driver(&hpsa_pci_driver);
9660 sas_release_transport(hpsa_sas_transport_template);
9663 static void __attribute__((unused)) verify_offsets(void)
9665 #define VERIFY_OFFSET(member, offset) \
9666 BUILD_BUG_ON(offsetof(struct raid_map_data, member) != offset)
9668 VERIFY_OFFSET(structure_size, 0);
9669 VERIFY_OFFSET(volume_blk_size, 4);
9670 VERIFY_OFFSET(volume_blk_cnt, 8);
9671 VERIFY_OFFSET(phys_blk_shift, 16);
9672 VERIFY_OFFSET(parity_rotation_shift, 17);
9673 VERIFY_OFFSET(strip_size, 18);
9674 VERIFY_OFFSET(disk_starting_blk, 20);
9675 VERIFY_OFFSET(disk_blk_cnt, 28);
9676 VERIFY_OFFSET(data_disks_per_row, 36);
9677 VERIFY_OFFSET(metadata_disks_per_row, 38);
9678 VERIFY_OFFSET(row_cnt, 40);
9679 VERIFY_OFFSET(layout_map_count, 42);
9680 VERIFY_OFFSET(flags, 44);
9681 VERIFY_OFFSET(dekindex, 46);
9682 /* VERIFY_OFFSET(reserved, 48 */
9683 VERIFY_OFFSET(data, 64);
9685 #undef VERIFY_OFFSET
9687 #define VERIFY_OFFSET(member, offset) \
9688 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, member) != offset)
9690 VERIFY_OFFSET(IU_type, 0);
9691 VERIFY_OFFSET(direction, 1);
9692 VERIFY_OFFSET(reply_queue, 2);
9693 /* VERIFY_OFFSET(reserved1, 3); */
9694 VERIFY_OFFSET(scsi_nexus, 4);
9695 VERIFY_OFFSET(Tag, 8);
9696 VERIFY_OFFSET(cdb, 16);
9697 VERIFY_OFFSET(cciss_lun, 32);
9698 VERIFY_OFFSET(data_len, 40);
9699 VERIFY_OFFSET(cmd_priority_task_attr, 44);
9700 VERIFY_OFFSET(sg_count, 45);
9701 /* VERIFY_OFFSET(reserved3 */
9702 VERIFY_OFFSET(err_ptr, 48);
9703 VERIFY_OFFSET(err_len, 56);
9704 /* VERIFY_OFFSET(reserved4 */
9705 VERIFY_OFFSET(sg, 64);
9707 #undef VERIFY_OFFSET
9709 #define VERIFY_OFFSET(member, offset) \
9710 BUILD_BUG_ON(offsetof(struct io_accel1_cmd, member) != offset)
9712 VERIFY_OFFSET(dev_handle, 0x00);
9713 VERIFY_OFFSET(reserved1, 0x02);
9714 VERIFY_OFFSET(function, 0x03);
9715 VERIFY_OFFSET(reserved2, 0x04);
9716 VERIFY_OFFSET(err_info, 0x0C);
9717 VERIFY_OFFSET(reserved3, 0x10);
9718 VERIFY_OFFSET(err_info_len, 0x12);
9719 VERIFY_OFFSET(reserved4, 0x13);
9720 VERIFY_OFFSET(sgl_offset, 0x14);
9721 VERIFY_OFFSET(reserved5, 0x15);
9722 VERIFY_OFFSET(transfer_len, 0x1C);
9723 VERIFY_OFFSET(reserved6, 0x20);
9724 VERIFY_OFFSET(io_flags, 0x24);
9725 VERIFY_OFFSET(reserved7, 0x26);
9726 VERIFY_OFFSET(LUN, 0x34);
9727 VERIFY_OFFSET(control, 0x3C);
9728 VERIFY_OFFSET(CDB, 0x40);
9729 VERIFY_OFFSET(reserved8, 0x50);
9730 VERIFY_OFFSET(host_context_flags, 0x60);
9731 VERIFY_OFFSET(timeout_sec, 0x62);
9732 VERIFY_OFFSET(ReplyQueue, 0x64);
9733 VERIFY_OFFSET(reserved9, 0x65);
9734 VERIFY_OFFSET(tag, 0x68);
9735 VERIFY_OFFSET(host_addr, 0x70);
9736 VERIFY_OFFSET(CISS_LUN, 0x78);
9737 VERIFY_OFFSET(SG, 0x78 + 8);
9738 #undef VERIFY_OFFSET
9741 module_init(hpsa_init);
9742 module_exit(hpsa_cleanup);