2 * Disk Array driver for HP Smart Array SAS controllers
3 * Copyright 2016 Microsemi Corporation
4 * Copyright 2014-2015 PMC-Sierra, Inc.
5 * Copyright 2000,2009-2015 Hewlett-Packard Development Company, L.P.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
14 * NON INFRINGEMENT. See the GNU General Public License for more details.
16 * Questions/Comments/Bugfixes to esc.storagedev@microsemi.com
20 #include <linux/module.h>
21 #include <linux/interrupt.h>
22 #include <linux/types.h>
23 #include <linux/pci.h>
24 #include <linux/pci-aspm.h>
25 #include <linux/kernel.h>
26 #include <linux/slab.h>
27 #include <linux/delay.h>
29 #include <linux/timer.h>
30 #include <linux/init.h>
31 #include <linux/spinlock.h>
32 #include <linux/compat.h>
33 #include <linux/blktrace_api.h>
34 #include <linux/uaccess.h>
36 #include <linux/dma-mapping.h>
37 #include <linux/completion.h>
38 #include <linux/moduleparam.h>
39 #include <scsi/scsi.h>
40 #include <scsi/scsi_cmnd.h>
41 #include <scsi/scsi_device.h>
42 #include <scsi/scsi_host.h>
43 #include <scsi/scsi_tcq.h>
44 #include <scsi/scsi_eh.h>
45 #include <scsi/scsi_transport_sas.h>
46 #include <scsi/scsi_dbg.h>
47 #include <linux/cciss_ioctl.h>
48 #include <linux/string.h>
49 #include <linux/bitmap.h>
50 #include <linux/atomic.h>
51 #include <linux/jiffies.h>
52 #include <linux/percpu-defs.h>
53 #include <linux/percpu.h>
54 #include <asm/unaligned.h>
55 #include <asm/div64.h>
60 * HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.'
61 * with an optional trailing '-' followed by a byte value (0-255).
63 #define HPSA_DRIVER_VERSION "3.4.16-0"
64 #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
67 /* How long to wait for CISS doorbell communication */
68 #define CLEAR_EVENT_WAIT_INTERVAL 20 /* ms for each msleep() call */
69 #define MODE_CHANGE_WAIT_INTERVAL 10 /* ms for each msleep() call */
70 #define MAX_CLEAR_EVENT_WAIT 30000 /* times 20 ms = 600 s */
71 #define MAX_MODE_CHANGE_WAIT 2000 /* times 10 ms = 20 s */
72 #define MAX_IOCTL_CONFIG_WAIT 1000
74 /*define how many times we will try a command because of bus resets */
75 #define MAX_CMD_RETRIES 3
77 /* Embedded module documentation macros - see modules.h */
78 MODULE_AUTHOR("Hewlett-Packard Company");
79 MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
81 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
82 MODULE_VERSION(HPSA_DRIVER_VERSION);
83 MODULE_LICENSE("GPL");
85 static int hpsa_allow_any;
86 module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR);
87 MODULE_PARM_DESC(hpsa_allow_any,
88 "Allow hpsa driver to access unknown HP Smart Array hardware");
89 static int hpsa_simple_mode;
90 module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR);
91 MODULE_PARM_DESC(hpsa_simple_mode,
92 "Use 'simple mode' rather than 'performant mode'");
94 /* define the PCI info for the cards we can control */
95 static const struct pci_device_id hpsa_pci_device_id[] = {
96 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241},
97 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243},
98 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245},
99 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247},
100 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249},
101 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A},
102 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B},
103 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233},
104 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3350},
105 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3351},
106 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3352},
107 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3353},
108 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3354},
109 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3355},
110 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3356},
111 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1921},
112 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1922},
113 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1923},
114 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1924},
115 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1926},
116 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1928},
117 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1929},
118 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BD},
119 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BE},
120 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BF},
121 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C0},
122 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C1},
123 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C2},
124 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C3},
125 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C4},
126 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C5},
127 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C6},
128 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C7},
129 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C8},
130 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C9},
131 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CA},
132 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CB},
133 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CC},
134 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CD},
135 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CE},
136 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0580},
137 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0581},
138 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0582},
139 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0583},
140 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0584},
141 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0585},
142 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0076},
143 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0087},
144 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x007D},
145 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0088},
146 {PCI_VENDOR_ID_HP, 0x333f, 0x103c, 0x333f},
147 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
148 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
152 MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id);
154 /* board_id = Subsystem Device ID & Vendor ID
155 * product = Marketing Name for the board
156 * access = Address of the struct of function pointers
158 static struct board_type products[] = {
159 {0x3241103C, "Smart Array P212", &SA5_access},
160 {0x3243103C, "Smart Array P410", &SA5_access},
161 {0x3245103C, "Smart Array P410i", &SA5_access},
162 {0x3247103C, "Smart Array P411", &SA5_access},
163 {0x3249103C, "Smart Array P812", &SA5_access},
164 {0x324A103C, "Smart Array P712m", &SA5_access},
165 {0x324B103C, "Smart Array P711m", &SA5_access},
166 {0x3233103C, "HP StorageWorks 1210m", &SA5_access}, /* alias of 333f */
167 {0x3350103C, "Smart Array P222", &SA5_access},
168 {0x3351103C, "Smart Array P420", &SA5_access},
169 {0x3352103C, "Smart Array P421", &SA5_access},
170 {0x3353103C, "Smart Array P822", &SA5_access},
171 {0x3354103C, "Smart Array P420i", &SA5_access},
172 {0x3355103C, "Smart Array P220i", &SA5_access},
173 {0x3356103C, "Smart Array P721m", &SA5_access},
174 {0x1921103C, "Smart Array P830i", &SA5_access},
175 {0x1922103C, "Smart Array P430", &SA5_access},
176 {0x1923103C, "Smart Array P431", &SA5_access},
177 {0x1924103C, "Smart Array P830", &SA5_access},
178 {0x1926103C, "Smart Array P731m", &SA5_access},
179 {0x1928103C, "Smart Array P230i", &SA5_access},
180 {0x1929103C, "Smart Array P530", &SA5_access},
181 {0x21BD103C, "Smart Array P244br", &SA5_access},
182 {0x21BE103C, "Smart Array P741m", &SA5_access},
183 {0x21BF103C, "Smart HBA H240ar", &SA5_access},
184 {0x21C0103C, "Smart Array P440ar", &SA5_access},
185 {0x21C1103C, "Smart Array P840ar", &SA5_access},
186 {0x21C2103C, "Smart Array P440", &SA5_access},
187 {0x21C3103C, "Smart Array P441", &SA5_access},
188 {0x21C4103C, "Smart Array", &SA5_access},
189 {0x21C5103C, "Smart Array P841", &SA5_access},
190 {0x21C6103C, "Smart HBA H244br", &SA5_access},
191 {0x21C7103C, "Smart HBA H240", &SA5_access},
192 {0x21C8103C, "Smart HBA H241", &SA5_access},
193 {0x21C9103C, "Smart Array", &SA5_access},
194 {0x21CA103C, "Smart Array P246br", &SA5_access},
195 {0x21CB103C, "Smart Array P840", &SA5_access},
196 {0x21CC103C, "Smart Array", &SA5_access},
197 {0x21CD103C, "Smart Array", &SA5_access},
198 {0x21CE103C, "Smart HBA", &SA5_access},
199 {0x05809005, "SmartHBA-SA", &SA5_access},
200 {0x05819005, "SmartHBA-SA 8i", &SA5_access},
201 {0x05829005, "SmartHBA-SA 8i8e", &SA5_access},
202 {0x05839005, "SmartHBA-SA 8e", &SA5_access},
203 {0x05849005, "SmartHBA-SA 16i", &SA5_access},
204 {0x05859005, "SmartHBA-SA 4i4e", &SA5_access},
205 {0x00761590, "HP Storage P1224 Array Controller", &SA5_access},
206 {0x00871590, "HP Storage P1224e Array Controller", &SA5_access},
207 {0x007D1590, "HP Storage P1228 Array Controller", &SA5_access},
208 {0x00881590, "HP Storage P1228e Array Controller", &SA5_access},
209 {0x333f103c, "HP StorageWorks 1210m Array Controller", &SA5_access},
210 {0xFFFF103C, "Unknown Smart Array", &SA5_access},
213 static struct scsi_transport_template *hpsa_sas_transport_template;
214 static int hpsa_add_sas_host(struct ctlr_info *h);
215 static void hpsa_delete_sas_host(struct ctlr_info *h);
216 static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node,
217 struct hpsa_scsi_dev_t *device);
218 static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device);
219 static struct hpsa_scsi_dev_t
220 *hpsa_find_device_by_sas_rphy(struct ctlr_info *h,
221 struct sas_rphy *rphy);
223 #define SCSI_CMD_BUSY ((struct scsi_cmnd *)&hpsa_cmd_busy)
224 static const struct scsi_cmnd hpsa_cmd_busy;
225 #define SCSI_CMD_IDLE ((struct scsi_cmnd *)&hpsa_cmd_idle)
226 static const struct scsi_cmnd hpsa_cmd_idle;
227 static int number_of_controllers;
229 static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id);
230 static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id);
231 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
234 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd,
238 static void cmd_free(struct ctlr_info *h, struct CommandList *c);
239 static struct CommandList *cmd_alloc(struct ctlr_info *h);
240 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c);
241 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
242 struct scsi_cmnd *scmd);
243 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
244 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
246 static void hpsa_free_cmd_pool(struct ctlr_info *h);
247 #define VPD_PAGE (1 << 8)
248 #define HPSA_SIMPLE_ERROR_BITS 0x03
250 static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
251 static void hpsa_scan_start(struct Scsi_Host *);
252 static int hpsa_scan_finished(struct Scsi_Host *sh,
253 unsigned long elapsed_time);
254 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth);
256 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd);
257 static int hpsa_eh_abort_handler(struct scsi_cmnd *scsicmd);
258 static int hpsa_slave_alloc(struct scsi_device *sdev);
259 static int hpsa_slave_configure(struct scsi_device *sdev);
260 static void hpsa_slave_destroy(struct scsi_device *sdev);
262 static void hpsa_update_scsi_devices(struct ctlr_info *h);
263 static int check_for_unit_attention(struct ctlr_info *h,
264 struct CommandList *c);
265 static void check_ioctl_unit_attention(struct ctlr_info *h,
266 struct CommandList *c);
267 /* performant mode helper functions */
268 static void calc_bucket_map(int *bucket, int num_buckets,
269 int nsgs, int min_blocks, u32 *bucket_map);
270 static void hpsa_free_performant_mode(struct ctlr_info *h);
271 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h);
272 static inline u32 next_command(struct ctlr_info *h, u8 q);
273 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
274 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
276 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
277 unsigned long *memory_bar);
278 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id);
279 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
281 static inline void finish_cmd(struct CommandList *c);
282 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h);
283 #define BOARD_NOT_READY 0
284 #define BOARD_READY 1
285 static void hpsa_drain_accel_commands(struct ctlr_info *h);
286 static void hpsa_flush_cache(struct ctlr_info *h);
287 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
288 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
289 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk);
290 static void hpsa_command_resubmit_worker(struct work_struct *work);
291 static u32 lockup_detected(struct ctlr_info *h);
292 static int detect_controller_lockup(struct ctlr_info *h);
293 static void hpsa_disable_rld_caching(struct ctlr_info *h);
294 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
295 struct ReportExtendedLUNdata *buf, int bufsize);
296 static bool hpsa_vpd_page_supported(struct ctlr_info *h,
297 unsigned char scsi3addr[], u8 page);
298 static int hpsa_luns_changed(struct ctlr_info *h);
299 static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c,
300 struct hpsa_scsi_dev_t *dev,
301 unsigned char *scsi3addr);
303 static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
305 unsigned long *priv = shost_priv(sdev->host);
306 return (struct ctlr_info *) *priv;
309 static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh)
311 unsigned long *priv = shost_priv(sh);
312 return (struct ctlr_info *) *priv;
315 static inline bool hpsa_is_cmd_idle(struct CommandList *c)
317 return c->scsi_cmd == SCSI_CMD_IDLE;
320 static inline bool hpsa_is_pending_event(struct CommandList *c)
322 return c->abort_pending || c->reset_pending;
325 /* extract sense key, asc, and ascq from sense data. -1 means invalid. */
326 static void decode_sense_data(const u8 *sense_data, int sense_data_len,
327 u8 *sense_key, u8 *asc, u8 *ascq)
329 struct scsi_sense_hdr sshdr;
336 if (sense_data_len < 1)
339 rc = scsi_normalize_sense(sense_data, sense_data_len, &sshdr);
341 *sense_key = sshdr.sense_key;
347 static int check_for_unit_attention(struct ctlr_info *h,
348 struct CommandList *c)
350 u8 sense_key, asc, ascq;
353 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
354 sense_len = sizeof(c->err_info->SenseInfo);
356 sense_len = c->err_info->SenseLen;
358 decode_sense_data(c->err_info->SenseInfo, sense_len,
359 &sense_key, &asc, &ascq);
360 if (sense_key != UNIT_ATTENTION || asc == 0xff)
365 dev_warn(&h->pdev->dev,
366 "%s: a state change detected, command retried\n",
370 dev_warn(&h->pdev->dev,
371 "%s: LUN failure detected\n", h->devname);
373 case REPORT_LUNS_CHANGED:
374 dev_warn(&h->pdev->dev,
375 "%s: report LUN data changed\n", h->devname);
377 * Note: this REPORT_LUNS_CHANGED condition only occurs on the external
378 * target (array) devices.
382 dev_warn(&h->pdev->dev,
383 "%s: a power on or device reset detected\n",
386 case UNIT_ATTENTION_CLEARED:
387 dev_warn(&h->pdev->dev,
388 "%s: unit attention cleared by another initiator\n",
392 dev_warn(&h->pdev->dev,
393 "%s: unknown unit attention detected\n",
400 static int check_for_busy(struct ctlr_info *h, struct CommandList *c)
402 if (c->err_info->CommandStatus != CMD_TARGET_STATUS ||
403 (c->err_info->ScsiStatus != SAM_STAT_BUSY &&
404 c->err_info->ScsiStatus != SAM_STAT_TASK_SET_FULL))
406 dev_warn(&h->pdev->dev, HPSA "device busy");
410 static u32 lockup_detected(struct ctlr_info *h);
411 static ssize_t host_show_lockup_detected(struct device *dev,
412 struct device_attribute *attr, char *buf)
416 struct Scsi_Host *shost = class_to_shost(dev);
418 h = shost_to_hba(shost);
419 ld = lockup_detected(h);
421 return sprintf(buf, "ld=%d\n", ld);
424 static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev,
425 struct device_attribute *attr,
426 const char *buf, size_t count)
430 struct Scsi_Host *shost = class_to_shost(dev);
433 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
435 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
436 strncpy(tmpbuf, buf, len);
438 if (sscanf(tmpbuf, "%d", &status) != 1)
440 h = shost_to_hba(shost);
441 h->acciopath_status = !!status;
442 dev_warn(&h->pdev->dev,
443 "hpsa: HP SSD Smart Path %s via sysfs update.\n",
444 h->acciopath_status ? "enabled" : "disabled");
448 static ssize_t host_store_raid_offload_debug(struct device *dev,
449 struct device_attribute *attr,
450 const char *buf, size_t count)
452 int debug_level, len;
454 struct Scsi_Host *shost = class_to_shost(dev);
457 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
459 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
460 strncpy(tmpbuf, buf, len);
462 if (sscanf(tmpbuf, "%d", &debug_level) != 1)
466 h = shost_to_hba(shost);
467 h->raid_offload_debug = debug_level;
468 dev_warn(&h->pdev->dev, "hpsa: Set raid_offload_debug level = %d\n",
469 h->raid_offload_debug);
473 static ssize_t host_store_rescan(struct device *dev,
474 struct device_attribute *attr,
475 const char *buf, size_t count)
478 struct Scsi_Host *shost = class_to_shost(dev);
479 h = shost_to_hba(shost);
480 hpsa_scan_start(h->scsi_host);
484 static ssize_t host_show_firmware_revision(struct device *dev,
485 struct device_attribute *attr, char *buf)
488 struct Scsi_Host *shost = class_to_shost(dev);
489 unsigned char *fwrev;
491 h = shost_to_hba(shost);
492 if (!h->hba_inquiry_data)
494 fwrev = &h->hba_inquiry_data[32];
495 return snprintf(buf, 20, "%c%c%c%c\n",
496 fwrev[0], fwrev[1], fwrev[2], fwrev[3]);
499 static ssize_t host_show_commands_outstanding(struct device *dev,
500 struct device_attribute *attr, char *buf)
502 struct Scsi_Host *shost = class_to_shost(dev);
503 struct ctlr_info *h = shost_to_hba(shost);
505 return snprintf(buf, 20, "%d\n",
506 atomic_read(&h->commands_outstanding));
509 static ssize_t host_show_transport_mode(struct device *dev,
510 struct device_attribute *attr, char *buf)
513 struct Scsi_Host *shost = class_to_shost(dev);
515 h = shost_to_hba(shost);
516 return snprintf(buf, 20, "%s\n",
517 h->transMethod & CFGTBL_Trans_Performant ?
518 "performant" : "simple");
521 static ssize_t host_show_hp_ssd_smart_path_status(struct device *dev,
522 struct device_attribute *attr, char *buf)
525 struct Scsi_Host *shost = class_to_shost(dev);
527 h = shost_to_hba(shost);
528 return snprintf(buf, 30, "HP SSD Smart Path %s\n",
529 (h->acciopath_status == 1) ? "enabled" : "disabled");
532 /* List of controllers which cannot be hard reset on kexec with reset_devices */
533 static u32 unresettable_controller[] = {
534 0x324a103C, /* Smart Array P712m */
535 0x324b103C, /* Smart Array P711m */
536 0x3223103C, /* Smart Array P800 */
537 0x3234103C, /* Smart Array P400 */
538 0x3235103C, /* Smart Array P400i */
539 0x3211103C, /* Smart Array E200i */
540 0x3212103C, /* Smart Array E200 */
541 0x3213103C, /* Smart Array E200i */
542 0x3214103C, /* Smart Array E200i */
543 0x3215103C, /* Smart Array E200i */
544 0x3237103C, /* Smart Array E500 */
545 0x323D103C, /* Smart Array P700m */
546 0x40800E11, /* Smart Array 5i */
547 0x409C0E11, /* Smart Array 6400 */
548 0x409D0E11, /* Smart Array 6400 EM */
549 0x40700E11, /* Smart Array 5300 */
550 0x40820E11, /* Smart Array 532 */
551 0x40830E11, /* Smart Array 5312 */
552 0x409A0E11, /* Smart Array 641 */
553 0x409B0E11, /* Smart Array 642 */
554 0x40910E11, /* Smart Array 6i */
557 /* List of controllers which cannot even be soft reset */
558 static u32 soft_unresettable_controller[] = {
559 0x40800E11, /* Smart Array 5i */
560 0x40700E11, /* Smart Array 5300 */
561 0x40820E11, /* Smart Array 532 */
562 0x40830E11, /* Smart Array 5312 */
563 0x409A0E11, /* Smart Array 641 */
564 0x409B0E11, /* Smart Array 642 */
565 0x40910E11, /* Smart Array 6i */
566 /* Exclude 640x boards. These are two pci devices in one slot
567 * which share a battery backed cache module. One controls the
568 * cache, the other accesses the cache through the one that controls
569 * it. If we reset the one controlling the cache, the other will
570 * likely not be happy. Just forbid resetting this conjoined mess.
571 * The 640x isn't really supported by hpsa anyway.
573 0x409C0E11, /* Smart Array 6400 */
574 0x409D0E11, /* Smart Array 6400 EM */
577 static u32 needs_abort_tags_swizzled[] = {
578 0x323D103C, /* Smart Array P700m */
579 0x324a103C, /* Smart Array P712m */
580 0x324b103C, /* SmartArray P711m */
583 static int board_id_in_array(u32 a[], int nelems, u32 board_id)
587 for (i = 0; i < nelems; i++)
588 if (a[i] == board_id)
593 static int ctlr_is_hard_resettable(u32 board_id)
595 return !board_id_in_array(unresettable_controller,
596 ARRAY_SIZE(unresettable_controller), board_id);
599 static int ctlr_is_soft_resettable(u32 board_id)
601 return !board_id_in_array(soft_unresettable_controller,
602 ARRAY_SIZE(soft_unresettable_controller), board_id);
605 static int ctlr_is_resettable(u32 board_id)
607 return ctlr_is_hard_resettable(board_id) ||
608 ctlr_is_soft_resettable(board_id);
611 static int ctlr_needs_abort_tags_swizzled(u32 board_id)
613 return board_id_in_array(needs_abort_tags_swizzled,
614 ARRAY_SIZE(needs_abort_tags_swizzled), board_id);
617 static ssize_t host_show_resettable(struct device *dev,
618 struct device_attribute *attr, char *buf)
621 struct Scsi_Host *shost = class_to_shost(dev);
623 h = shost_to_hba(shost);
624 return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id));
627 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[])
629 return (scsi3addr[3] & 0xC0) == 0x40;
632 static const char * const raid_label[] = { "0", "4", "1(+0)", "5", "5+1", "6",
633 "1(+0)ADM", "UNKNOWN", "PHYS DRV"
635 #define HPSA_RAID_0 0
636 #define HPSA_RAID_4 1
637 #define HPSA_RAID_1 2 /* also used for RAID 10 */
638 #define HPSA_RAID_5 3 /* also used for RAID 50 */
639 #define HPSA_RAID_51 4
640 #define HPSA_RAID_6 5 /* also used for RAID 60 */
641 #define HPSA_RAID_ADM 6 /* also used for RAID 1+0 ADM */
642 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 2)
643 #define PHYSICAL_DRIVE (ARRAY_SIZE(raid_label) - 1)
645 static inline bool is_logical_device(struct hpsa_scsi_dev_t *device)
647 return !device->physical_device;
650 static ssize_t raid_level_show(struct device *dev,
651 struct device_attribute *attr, char *buf)
654 unsigned char rlevel;
656 struct scsi_device *sdev;
657 struct hpsa_scsi_dev_t *hdev;
660 sdev = to_scsi_device(dev);
661 h = sdev_to_hba(sdev);
662 spin_lock_irqsave(&h->lock, flags);
663 hdev = sdev->hostdata;
665 spin_unlock_irqrestore(&h->lock, flags);
669 /* Is this even a logical drive? */
670 if (!is_logical_device(hdev)) {
671 spin_unlock_irqrestore(&h->lock, flags);
672 l = snprintf(buf, PAGE_SIZE, "N/A\n");
676 rlevel = hdev->raid_level;
677 spin_unlock_irqrestore(&h->lock, flags);
678 if (rlevel > RAID_UNKNOWN)
679 rlevel = RAID_UNKNOWN;
680 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]);
684 static ssize_t lunid_show(struct device *dev,
685 struct device_attribute *attr, char *buf)
688 struct scsi_device *sdev;
689 struct hpsa_scsi_dev_t *hdev;
691 unsigned char lunid[8];
693 sdev = to_scsi_device(dev);
694 h = sdev_to_hba(sdev);
695 spin_lock_irqsave(&h->lock, flags);
696 hdev = sdev->hostdata;
698 spin_unlock_irqrestore(&h->lock, flags);
701 memcpy(lunid, hdev->scsi3addr, sizeof(lunid));
702 spin_unlock_irqrestore(&h->lock, flags);
703 return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
704 lunid[0], lunid[1], lunid[2], lunid[3],
705 lunid[4], lunid[5], lunid[6], lunid[7]);
708 static ssize_t unique_id_show(struct device *dev,
709 struct device_attribute *attr, char *buf)
712 struct scsi_device *sdev;
713 struct hpsa_scsi_dev_t *hdev;
715 unsigned char sn[16];
717 sdev = to_scsi_device(dev);
718 h = sdev_to_hba(sdev);
719 spin_lock_irqsave(&h->lock, flags);
720 hdev = sdev->hostdata;
722 spin_unlock_irqrestore(&h->lock, flags);
725 memcpy(sn, hdev->device_id, sizeof(sn));
726 spin_unlock_irqrestore(&h->lock, flags);
727 return snprintf(buf, 16 * 2 + 2,
728 "%02X%02X%02X%02X%02X%02X%02X%02X"
729 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
730 sn[0], sn[1], sn[2], sn[3],
731 sn[4], sn[5], sn[6], sn[7],
732 sn[8], sn[9], sn[10], sn[11],
733 sn[12], sn[13], sn[14], sn[15]);
736 static ssize_t sas_address_show(struct device *dev,
737 struct device_attribute *attr, char *buf)
740 struct scsi_device *sdev;
741 struct hpsa_scsi_dev_t *hdev;
745 sdev = to_scsi_device(dev);
746 h = sdev_to_hba(sdev);
747 spin_lock_irqsave(&h->lock, flags);
748 hdev = sdev->hostdata;
749 if (!hdev || is_logical_device(hdev) || !hdev->expose_device) {
750 spin_unlock_irqrestore(&h->lock, flags);
753 sas_address = hdev->sas_address;
754 spin_unlock_irqrestore(&h->lock, flags);
756 return snprintf(buf, PAGE_SIZE, "0x%016llx\n", sas_address);
759 static ssize_t host_show_hp_ssd_smart_path_enabled(struct device *dev,
760 struct device_attribute *attr, char *buf)
763 struct scsi_device *sdev;
764 struct hpsa_scsi_dev_t *hdev;
768 sdev = to_scsi_device(dev);
769 h = sdev_to_hba(sdev);
770 spin_lock_irqsave(&h->lock, flags);
771 hdev = sdev->hostdata;
773 spin_unlock_irqrestore(&h->lock, flags);
776 offload_enabled = hdev->offload_enabled;
777 spin_unlock_irqrestore(&h->lock, flags);
778 return snprintf(buf, 20, "%d\n", offload_enabled);
782 static ssize_t path_info_show(struct device *dev,
783 struct device_attribute *attr, char *buf)
786 struct scsi_device *sdev;
787 struct hpsa_scsi_dev_t *hdev;
793 u8 path_map_index = 0;
795 unsigned char phys_connector[2];
797 sdev = to_scsi_device(dev);
798 h = sdev_to_hba(sdev);
799 spin_lock_irqsave(&h->devlock, flags);
800 hdev = sdev->hostdata;
802 spin_unlock_irqrestore(&h->devlock, flags);
807 for (i = 0; i < MAX_PATHS; i++) {
808 path_map_index = 1<<i;
809 if (i == hdev->active_path_index)
811 else if (hdev->path_map & path_map_index)
816 output_len += scnprintf(buf + output_len,
817 PAGE_SIZE - output_len,
818 "[%d:%d:%d:%d] %20.20s ",
819 h->scsi_host->host_no,
820 hdev->bus, hdev->target, hdev->lun,
821 scsi_device_type(hdev->devtype));
823 if (hdev->devtype == TYPE_RAID || is_logical_device(hdev)) {
824 output_len += scnprintf(buf + output_len,
825 PAGE_SIZE - output_len,
831 memcpy(&phys_connector, &hdev->phys_connector[i],
832 sizeof(phys_connector));
833 if (phys_connector[0] < '0')
834 phys_connector[0] = '0';
835 if (phys_connector[1] < '0')
836 phys_connector[1] = '0';
837 output_len += scnprintf(buf + output_len,
838 PAGE_SIZE - output_len,
841 if ((hdev->devtype == TYPE_DISK || hdev->devtype == TYPE_ZBC) &&
842 hdev->expose_device) {
843 if (box == 0 || box == 0xFF) {
844 output_len += scnprintf(buf + output_len,
845 PAGE_SIZE - output_len,
849 output_len += scnprintf(buf + output_len,
850 PAGE_SIZE - output_len,
851 "BOX: %hhu BAY: %hhu %s\n",
854 } else if (box != 0 && box != 0xFF) {
855 output_len += scnprintf(buf + output_len,
856 PAGE_SIZE - output_len, "BOX: %hhu %s\n",
859 output_len += scnprintf(buf + output_len,
860 PAGE_SIZE - output_len, "%s\n", active);
863 spin_unlock_irqrestore(&h->devlock, flags);
867 static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
868 static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
869 static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
870 static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
871 static DEVICE_ATTR(sas_address, S_IRUGO, sas_address_show, NULL);
872 static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO,
873 host_show_hp_ssd_smart_path_enabled, NULL);
874 static DEVICE_ATTR(path_info, S_IRUGO, path_info_show, NULL);
875 static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH,
876 host_show_hp_ssd_smart_path_status,
877 host_store_hp_ssd_smart_path_status);
878 static DEVICE_ATTR(raid_offload_debug, S_IWUSR, NULL,
879 host_store_raid_offload_debug);
880 static DEVICE_ATTR(firmware_revision, S_IRUGO,
881 host_show_firmware_revision, NULL);
882 static DEVICE_ATTR(commands_outstanding, S_IRUGO,
883 host_show_commands_outstanding, NULL);
884 static DEVICE_ATTR(transport_mode, S_IRUGO,
885 host_show_transport_mode, NULL);
886 static DEVICE_ATTR(resettable, S_IRUGO,
887 host_show_resettable, NULL);
888 static DEVICE_ATTR(lockup_detected, S_IRUGO,
889 host_show_lockup_detected, NULL);
891 static struct device_attribute *hpsa_sdev_attrs[] = {
892 &dev_attr_raid_level,
895 &dev_attr_hp_ssd_smart_path_enabled,
897 &dev_attr_sas_address,
901 static struct device_attribute *hpsa_shost_attrs[] = {
903 &dev_attr_firmware_revision,
904 &dev_attr_commands_outstanding,
905 &dev_attr_transport_mode,
906 &dev_attr_resettable,
907 &dev_attr_hp_ssd_smart_path_status,
908 &dev_attr_raid_offload_debug,
909 &dev_attr_lockup_detected,
913 #define HPSA_NRESERVED_CMDS (HPSA_CMDS_RESERVED_FOR_ABORTS + \
914 HPSA_CMDS_RESERVED_FOR_DRIVER + HPSA_MAX_CONCURRENT_PASSTHRUS)
916 static struct scsi_host_template hpsa_driver_template = {
917 .module = THIS_MODULE,
920 .queuecommand = hpsa_scsi_queue_command,
921 .scan_start = hpsa_scan_start,
922 .scan_finished = hpsa_scan_finished,
923 .change_queue_depth = hpsa_change_queue_depth,
925 .use_clustering = ENABLE_CLUSTERING,
926 .eh_abort_handler = hpsa_eh_abort_handler,
927 .eh_device_reset_handler = hpsa_eh_device_reset_handler,
929 .slave_alloc = hpsa_slave_alloc,
930 .slave_configure = hpsa_slave_configure,
931 .slave_destroy = hpsa_slave_destroy,
933 .compat_ioctl = hpsa_compat_ioctl,
935 .sdev_attrs = hpsa_sdev_attrs,
936 .shost_attrs = hpsa_shost_attrs,
941 static inline u32 next_command(struct ctlr_info *h, u8 q)
944 struct reply_queue_buffer *rq = &h->reply_queue[q];
946 if (h->transMethod & CFGTBL_Trans_io_accel1)
947 return h->access.command_completed(h, q);
949 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
950 return h->access.command_completed(h, q);
952 if ((rq->head[rq->current_entry] & 1) == rq->wraparound) {
953 a = rq->head[rq->current_entry];
955 atomic_dec(&h->commands_outstanding);
959 /* Check for wraparound */
960 if (rq->current_entry == h->max_commands) {
961 rq->current_entry = 0;
968 * There are some special bits in the bus address of the
969 * command that we have to set for the controller to know
970 * how to process the command:
972 * Normal performant mode:
973 * bit 0: 1 means performant mode, 0 means simple mode.
974 * bits 1-3 = block fetch table entry
975 * bits 4-6 = command type (== 0)
978 * bit 0 = "performant mode" bit.
979 * bits 1-3 = block fetch table entry
980 * bits 4-6 = command type (== 110)
981 * (command type is needed because ioaccel1 mode
982 * commands are submitted through the same register as normal
983 * mode commands, so this is how the controller knows whether
984 * the command is normal mode or ioaccel1 mode.)
987 * bit 0 = "performant mode" bit.
988 * bits 1-4 = block fetch table entry (note extra bit)
989 * bits 4-6 = not needed, because ioaccel2 mode has
990 * a separate special register for submitting commands.
994 * set_performant_mode: Modify the tag for cciss performant
995 * set bit 0 for pull model, bits 3-1 for block fetch
998 #define DEFAULT_REPLY_QUEUE (-1)
999 static void set_performant_mode(struct ctlr_info *h, struct CommandList *c,
1002 if (likely(h->transMethod & CFGTBL_Trans_Performant)) {
1003 c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1);
1004 if (unlikely(!h->msix_vector))
1006 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
1007 c->Header.ReplyQueue =
1008 raw_smp_processor_id() % h->nreply_queues;
1010 c->Header.ReplyQueue = reply_queue % h->nreply_queues;
1014 static void set_ioaccel1_performant_mode(struct ctlr_info *h,
1015 struct CommandList *c,
1018 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
1021 * Tell the controller to post the reply to the queue for this
1022 * processor. This seems to give the best I/O throughput.
1024 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
1025 cp->ReplyQueue = smp_processor_id() % h->nreply_queues;
1027 cp->ReplyQueue = reply_queue % h->nreply_queues;
1029 * Set the bits in the address sent down to include:
1030 * - performant mode bit (bit 0)
1031 * - pull count (bits 1-3)
1032 * - command type (bits 4-6)
1034 c->busaddr |= 1 | (h->ioaccel1_blockFetchTable[c->Header.SGList] << 1) |
1035 IOACCEL1_BUSADDR_CMDTYPE;
1038 static void set_ioaccel2_tmf_performant_mode(struct ctlr_info *h,
1039 struct CommandList *c,
1042 struct hpsa_tmf_struct *cp = (struct hpsa_tmf_struct *)
1043 &h->ioaccel2_cmd_pool[c->cmdindex];
1045 /* Tell the controller to post the reply to the queue for this
1046 * processor. This seems to give the best I/O throughput.
1048 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
1049 cp->reply_queue = smp_processor_id() % h->nreply_queues;
1051 cp->reply_queue = reply_queue % h->nreply_queues;
1052 /* Set the bits in the address sent down to include:
1053 * - performant mode bit not used in ioaccel mode 2
1054 * - pull count (bits 0-3)
1055 * - command type isn't needed for ioaccel2
1057 c->busaddr |= h->ioaccel2_blockFetchTable[0];
1060 static void set_ioaccel2_performant_mode(struct ctlr_info *h,
1061 struct CommandList *c,
1064 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
1067 * Tell the controller to post the reply to the queue for this
1068 * processor. This seems to give the best I/O throughput.
1070 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
1071 cp->reply_queue = smp_processor_id() % h->nreply_queues;
1073 cp->reply_queue = reply_queue % h->nreply_queues;
1075 * Set the bits in the address sent down to include:
1076 * - performant mode bit not used in ioaccel mode 2
1077 * - pull count (bits 0-3)
1078 * - command type isn't needed for ioaccel2
1080 c->busaddr |= (h->ioaccel2_blockFetchTable[cp->sg_count]);
1083 static int is_firmware_flash_cmd(u8 *cdb)
1085 return cdb[0] == BMIC_WRITE && cdb[6] == BMIC_FLASH_FIRMWARE;
1089 * During firmware flash, the heartbeat register may not update as frequently
1090 * as it should. So we dial down lockup detection during firmware flash. and
1091 * dial it back up when firmware flash completes.
1093 #define HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH (240 * HZ)
1094 #define HEARTBEAT_SAMPLE_INTERVAL (30 * HZ)
1095 static void dial_down_lockup_detection_during_fw_flash(struct ctlr_info *h,
1096 struct CommandList *c)
1098 if (!is_firmware_flash_cmd(c->Request.CDB))
1100 atomic_inc(&h->firmware_flash_in_progress);
1101 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH;
1104 static void dial_up_lockup_detection_on_fw_flash_complete(struct ctlr_info *h,
1105 struct CommandList *c)
1107 if (is_firmware_flash_cmd(c->Request.CDB) &&
1108 atomic_dec_and_test(&h->firmware_flash_in_progress))
1109 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
1112 static void __enqueue_cmd_and_start_io(struct ctlr_info *h,
1113 struct CommandList *c, int reply_queue)
1115 dial_down_lockup_detection_during_fw_flash(h, c);
1116 atomic_inc(&h->commands_outstanding);
1117 switch (c->cmd_type) {
1119 set_ioaccel1_performant_mode(h, c, reply_queue);
1120 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
1123 set_ioaccel2_performant_mode(h, c, reply_queue);
1124 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
1127 set_ioaccel2_tmf_performant_mode(h, c, reply_queue);
1128 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
1131 set_performant_mode(h, c, reply_queue);
1132 h->access.submit_command(h, c);
1136 static void enqueue_cmd_and_start_io(struct ctlr_info *h, struct CommandList *c)
1138 if (unlikely(hpsa_is_pending_event(c)))
1139 return finish_cmd(c);
1141 __enqueue_cmd_and_start_io(h, c, DEFAULT_REPLY_QUEUE);
1144 static inline int is_hba_lunid(unsigned char scsi3addr[])
1146 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0;
1149 static inline int is_scsi_rev_5(struct ctlr_info *h)
1151 if (!h->hba_inquiry_data)
1153 if ((h->hba_inquiry_data[2] & 0x07) == 5)
1158 static int hpsa_find_target_lun(struct ctlr_info *h,
1159 unsigned char scsi3addr[], int bus, int *target, int *lun)
1161 /* finds an unused bus, target, lun for a new physical device
1162 * assumes h->devlock is held
1165 DECLARE_BITMAP(lun_taken, HPSA_MAX_DEVICES);
1167 bitmap_zero(lun_taken, HPSA_MAX_DEVICES);
1169 for (i = 0; i < h->ndevices; i++) {
1170 if (h->dev[i]->bus == bus && h->dev[i]->target != -1)
1171 __set_bit(h->dev[i]->target, lun_taken);
1174 i = find_first_zero_bit(lun_taken, HPSA_MAX_DEVICES);
1175 if (i < HPSA_MAX_DEVICES) {
1184 static void hpsa_show_dev_msg(const char *level, struct ctlr_info *h,
1185 struct hpsa_scsi_dev_t *dev, char *description)
1187 #define LABEL_SIZE 25
1188 char label[LABEL_SIZE];
1190 if (h == NULL || h->pdev == NULL || h->scsi_host == NULL)
1193 switch (dev->devtype) {
1195 snprintf(label, LABEL_SIZE, "controller");
1197 case TYPE_ENCLOSURE:
1198 snprintf(label, LABEL_SIZE, "enclosure");
1203 snprintf(label, LABEL_SIZE, "external");
1204 else if (!is_logical_dev_addr_mode(dev->scsi3addr))
1205 snprintf(label, LABEL_SIZE, "%s",
1206 raid_label[PHYSICAL_DRIVE]);
1208 snprintf(label, LABEL_SIZE, "RAID-%s",
1209 dev->raid_level > RAID_UNKNOWN ? "?" :
1210 raid_label[dev->raid_level]);
1213 snprintf(label, LABEL_SIZE, "rom");
1216 snprintf(label, LABEL_SIZE, "tape");
1218 case TYPE_MEDIUM_CHANGER:
1219 snprintf(label, LABEL_SIZE, "changer");
1222 snprintf(label, LABEL_SIZE, "UNKNOWN");
1226 dev_printk(level, &h->pdev->dev,
1227 "scsi %d:%d:%d:%d: %s %s %.8s %.16s %s SSDSmartPathCap%c En%c Exp=%d\n",
1228 h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
1230 scsi_device_type(dev->devtype),
1234 dev->offload_config ? '+' : '-',
1235 dev->offload_enabled ? '+' : '-',
1236 dev->expose_device);
1239 /* Add an entry into h->dev[] array. */
1240 static int hpsa_scsi_add_entry(struct ctlr_info *h,
1241 struct hpsa_scsi_dev_t *device,
1242 struct hpsa_scsi_dev_t *added[], int *nadded)
1244 /* assumes h->devlock is held */
1245 int n = h->ndevices;
1247 unsigned char addr1[8], addr2[8];
1248 struct hpsa_scsi_dev_t *sd;
1250 if (n >= HPSA_MAX_DEVICES) {
1251 dev_err(&h->pdev->dev, "too many devices, some will be "
1256 /* physical devices do not have lun or target assigned until now. */
1257 if (device->lun != -1)
1258 /* Logical device, lun is already assigned. */
1261 /* If this device a non-zero lun of a multi-lun device
1262 * byte 4 of the 8-byte LUN addr will contain the logical
1263 * unit no, zero otherwise.
1265 if (device->scsi3addr[4] == 0) {
1266 /* This is not a non-zero lun of a multi-lun device */
1267 if (hpsa_find_target_lun(h, device->scsi3addr,
1268 device->bus, &device->target, &device->lun) != 0)
1273 /* This is a non-zero lun of a multi-lun device.
1274 * Search through our list and find the device which
1275 * has the same 8 byte LUN address, excepting byte 4 and 5.
1276 * Assign the same bus and target for this new LUN.
1277 * Use the logical unit number from the firmware.
1279 memcpy(addr1, device->scsi3addr, 8);
1282 for (i = 0; i < n; i++) {
1284 memcpy(addr2, sd->scsi3addr, 8);
1287 /* differ only in byte 4 and 5? */
1288 if (memcmp(addr1, addr2, 8) == 0) {
1289 device->bus = sd->bus;
1290 device->target = sd->target;
1291 device->lun = device->scsi3addr[4];
1295 if (device->lun == -1) {
1296 dev_warn(&h->pdev->dev, "physical device with no LUN=0,"
1297 " suspect firmware bug or unsupported hardware "
1298 "configuration.\n");
1306 added[*nadded] = device;
1308 hpsa_show_dev_msg(KERN_INFO, h, device,
1309 device->expose_device ? "added" : "masked");
1310 device->offload_to_be_enabled = device->offload_enabled;
1311 device->offload_enabled = 0;
1315 /* Update an entry in h->dev[] array. */
1316 static void hpsa_scsi_update_entry(struct ctlr_info *h,
1317 int entry, struct hpsa_scsi_dev_t *new_entry)
1319 int offload_enabled;
1320 /* assumes h->devlock is held */
1321 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1323 /* Raid level changed. */
1324 h->dev[entry]->raid_level = new_entry->raid_level;
1326 /* Raid offload parameters changed. Careful about the ordering. */
1327 if (new_entry->offload_config && new_entry->offload_enabled) {
1329 * if drive is newly offload_enabled, we want to copy the
1330 * raid map data first. If previously offload_enabled and
1331 * offload_config were set, raid map data had better be
1332 * the same as it was before. if raid map data is changed
1333 * then it had better be the case that
1334 * h->dev[entry]->offload_enabled is currently 0.
1336 h->dev[entry]->raid_map = new_entry->raid_map;
1337 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1339 if (new_entry->hba_ioaccel_enabled) {
1340 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1341 wmb(); /* set ioaccel_handle *before* hba_ioaccel_enabled */
1343 h->dev[entry]->hba_ioaccel_enabled = new_entry->hba_ioaccel_enabled;
1344 h->dev[entry]->offload_config = new_entry->offload_config;
1345 h->dev[entry]->offload_to_mirror = new_entry->offload_to_mirror;
1346 h->dev[entry]->queue_depth = new_entry->queue_depth;
1349 * We can turn off ioaccel offload now, but need to delay turning
1350 * it on until we can update h->dev[entry]->phys_disk[], but we
1351 * can't do that until all the devices are updated.
1353 h->dev[entry]->offload_to_be_enabled = new_entry->offload_enabled;
1354 if (!new_entry->offload_enabled)
1355 h->dev[entry]->offload_enabled = 0;
1357 offload_enabled = h->dev[entry]->offload_enabled;
1358 h->dev[entry]->offload_enabled = h->dev[entry]->offload_to_be_enabled;
1359 hpsa_show_dev_msg(KERN_INFO, h, h->dev[entry], "updated");
1360 h->dev[entry]->offload_enabled = offload_enabled;
1363 /* Replace an entry from h->dev[] array. */
1364 static void hpsa_scsi_replace_entry(struct ctlr_info *h,
1365 int entry, struct hpsa_scsi_dev_t *new_entry,
1366 struct hpsa_scsi_dev_t *added[], int *nadded,
1367 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1369 /* assumes h->devlock is held */
1370 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1371 removed[*nremoved] = h->dev[entry];
1375 * New physical devices won't have target/lun assigned yet
1376 * so we need to preserve the values in the slot we are replacing.
1378 if (new_entry->target == -1) {
1379 new_entry->target = h->dev[entry]->target;
1380 new_entry->lun = h->dev[entry]->lun;
1383 h->dev[entry] = new_entry;
1384 added[*nadded] = new_entry;
1386 hpsa_show_dev_msg(KERN_INFO, h, new_entry, "replaced");
1387 new_entry->offload_to_be_enabled = new_entry->offload_enabled;
1388 new_entry->offload_enabled = 0;
1391 /* Remove an entry from h->dev[] array. */
1392 static void hpsa_scsi_remove_entry(struct ctlr_info *h, int entry,
1393 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1395 /* assumes h->devlock is held */
1397 struct hpsa_scsi_dev_t *sd;
1399 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1402 removed[*nremoved] = h->dev[entry];
1405 for (i = entry; i < h->ndevices-1; i++)
1406 h->dev[i] = h->dev[i+1];
1408 hpsa_show_dev_msg(KERN_INFO, h, sd, "removed");
1411 #define SCSI3ADDR_EQ(a, b) ( \
1412 (a)[7] == (b)[7] && \
1413 (a)[6] == (b)[6] && \
1414 (a)[5] == (b)[5] && \
1415 (a)[4] == (b)[4] && \
1416 (a)[3] == (b)[3] && \
1417 (a)[2] == (b)[2] && \
1418 (a)[1] == (b)[1] && \
1421 static void fixup_botched_add(struct ctlr_info *h,
1422 struct hpsa_scsi_dev_t *added)
1424 /* called when scsi_add_device fails in order to re-adjust
1425 * h->dev[] to match the mid layer's view.
1427 unsigned long flags;
1430 spin_lock_irqsave(&h->lock, flags);
1431 for (i = 0; i < h->ndevices; i++) {
1432 if (h->dev[i] == added) {
1433 for (j = i; j < h->ndevices-1; j++)
1434 h->dev[j] = h->dev[j+1];
1439 spin_unlock_irqrestore(&h->lock, flags);
1443 static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1,
1444 struct hpsa_scsi_dev_t *dev2)
1446 /* we compare everything except lun and target as these
1447 * are not yet assigned. Compare parts likely
1450 if (memcmp(dev1->scsi3addr, dev2->scsi3addr,
1451 sizeof(dev1->scsi3addr)) != 0)
1453 if (memcmp(dev1->device_id, dev2->device_id,
1454 sizeof(dev1->device_id)) != 0)
1456 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0)
1458 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0)
1460 if (dev1->devtype != dev2->devtype)
1462 if (dev1->bus != dev2->bus)
1467 static inline int device_updated(struct hpsa_scsi_dev_t *dev1,
1468 struct hpsa_scsi_dev_t *dev2)
1470 /* Device attributes that can change, but don't mean
1471 * that the device is a different device, nor that the OS
1472 * needs to be told anything about the change.
1474 if (dev1->raid_level != dev2->raid_level)
1476 if (dev1->offload_config != dev2->offload_config)
1478 if (dev1->offload_enabled != dev2->offload_enabled)
1480 if (!is_logical_dev_addr_mode(dev1->scsi3addr))
1481 if (dev1->queue_depth != dev2->queue_depth)
1486 /* Find needle in haystack. If exact match found, return DEVICE_SAME,
1487 * and return needle location in *index. If scsi3addr matches, but not
1488 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
1489 * location in *index.
1490 * In the case of a minor device attribute change, such as RAID level, just
1491 * return DEVICE_UPDATED, along with the updated device's location in index.
1492 * If needle not found, return DEVICE_NOT_FOUND.
1494 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle,
1495 struct hpsa_scsi_dev_t *haystack[], int haystack_size,
1499 #define DEVICE_NOT_FOUND 0
1500 #define DEVICE_CHANGED 1
1501 #define DEVICE_SAME 2
1502 #define DEVICE_UPDATED 3
1504 return DEVICE_NOT_FOUND;
1506 for (i = 0; i < haystack_size; i++) {
1507 if (haystack[i] == NULL) /* previously removed. */
1509 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) {
1511 if (device_is_the_same(needle, haystack[i])) {
1512 if (device_updated(needle, haystack[i]))
1513 return DEVICE_UPDATED;
1516 /* Keep offline devices offline */
1517 if (needle->volume_offline)
1518 return DEVICE_NOT_FOUND;
1519 return DEVICE_CHANGED;
1524 return DEVICE_NOT_FOUND;
1527 static void hpsa_monitor_offline_device(struct ctlr_info *h,
1528 unsigned char scsi3addr[])
1530 struct offline_device_entry *device;
1531 unsigned long flags;
1533 /* Check to see if device is already on the list */
1534 spin_lock_irqsave(&h->offline_device_lock, flags);
1535 list_for_each_entry(device, &h->offline_device_list, offline_list) {
1536 if (memcmp(device->scsi3addr, scsi3addr,
1537 sizeof(device->scsi3addr)) == 0) {
1538 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1542 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1544 /* Device is not on the list, add it. */
1545 device = kmalloc(sizeof(*device), GFP_KERNEL);
1547 dev_warn(&h->pdev->dev, "out of memory in %s\n", __func__);
1550 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
1551 spin_lock_irqsave(&h->offline_device_lock, flags);
1552 list_add_tail(&device->offline_list, &h->offline_device_list);
1553 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1556 /* Print a message explaining various offline volume states */
1557 static void hpsa_show_volume_status(struct ctlr_info *h,
1558 struct hpsa_scsi_dev_t *sd)
1560 if (sd->volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED)
1561 dev_info(&h->pdev->dev,
1562 "C%d:B%d:T%d:L%d Volume status is not available through vital product data pages.\n",
1563 h->scsi_host->host_no,
1564 sd->bus, sd->target, sd->lun);
1565 switch (sd->volume_offline) {
1568 case HPSA_LV_UNDERGOING_ERASE:
1569 dev_info(&h->pdev->dev,
1570 "C%d:B%d:T%d:L%d Volume is undergoing background erase process.\n",
1571 h->scsi_host->host_no,
1572 sd->bus, sd->target, sd->lun);
1574 case HPSA_LV_NOT_AVAILABLE:
1575 dev_info(&h->pdev->dev,
1576 "C%d:B%d:T%d:L%d Volume is waiting for transforming volume.\n",
1577 h->scsi_host->host_no,
1578 sd->bus, sd->target, sd->lun);
1580 case HPSA_LV_UNDERGOING_RPI:
1581 dev_info(&h->pdev->dev,
1582 "C%d:B%d:T%d:L%d Volume is undergoing rapid parity init.\n",
1583 h->scsi_host->host_no,
1584 sd->bus, sd->target, sd->lun);
1586 case HPSA_LV_PENDING_RPI:
1587 dev_info(&h->pdev->dev,
1588 "C%d:B%d:T%d:L%d Volume is queued for rapid parity initialization process.\n",
1589 h->scsi_host->host_no,
1590 sd->bus, sd->target, sd->lun);
1592 case HPSA_LV_ENCRYPTED_NO_KEY:
1593 dev_info(&h->pdev->dev,
1594 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because key is not present.\n",
1595 h->scsi_host->host_no,
1596 sd->bus, sd->target, sd->lun);
1598 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
1599 dev_info(&h->pdev->dev,
1600 "C%d:B%d:T%d:L%d Volume is not encrypted and cannot be accessed because controller is in encryption-only mode.\n",
1601 h->scsi_host->host_no,
1602 sd->bus, sd->target, sd->lun);
1604 case HPSA_LV_UNDERGOING_ENCRYPTION:
1605 dev_info(&h->pdev->dev,
1606 "C%d:B%d:T%d:L%d Volume is undergoing encryption process.\n",
1607 h->scsi_host->host_no,
1608 sd->bus, sd->target, sd->lun);
1610 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
1611 dev_info(&h->pdev->dev,
1612 "C%d:B%d:T%d:L%d Volume is undergoing encryption re-keying process.\n",
1613 h->scsi_host->host_no,
1614 sd->bus, sd->target, sd->lun);
1616 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
1617 dev_info(&h->pdev->dev,
1618 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because controller does not have encryption enabled.\n",
1619 h->scsi_host->host_no,
1620 sd->bus, sd->target, sd->lun);
1622 case HPSA_LV_PENDING_ENCRYPTION:
1623 dev_info(&h->pdev->dev,
1624 "C%d:B%d:T%d:L%d Volume is pending migration to encrypted state, but process has not started.\n",
1625 h->scsi_host->host_no,
1626 sd->bus, sd->target, sd->lun);
1628 case HPSA_LV_PENDING_ENCRYPTION_REKEYING:
1629 dev_info(&h->pdev->dev,
1630 "C%d:B%d:T%d:L%d Volume is encrypted and is pending encryption rekeying.\n",
1631 h->scsi_host->host_no,
1632 sd->bus, sd->target, sd->lun);
1638 * Figure the list of physical drive pointers for a logical drive with
1639 * raid offload configured.
1641 static void hpsa_figure_phys_disk_ptrs(struct ctlr_info *h,
1642 struct hpsa_scsi_dev_t *dev[], int ndevices,
1643 struct hpsa_scsi_dev_t *logical_drive)
1645 struct raid_map_data *map = &logical_drive->raid_map;
1646 struct raid_map_disk_data *dd = &map->data[0];
1648 int total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
1649 le16_to_cpu(map->metadata_disks_per_row);
1650 int nraid_map_entries = le16_to_cpu(map->row_cnt) *
1651 le16_to_cpu(map->layout_map_count) *
1652 total_disks_per_row;
1653 int nphys_disk = le16_to_cpu(map->layout_map_count) *
1654 total_disks_per_row;
1657 if (nraid_map_entries > RAID_MAP_MAX_ENTRIES)
1658 nraid_map_entries = RAID_MAP_MAX_ENTRIES;
1660 logical_drive->nphysical_disks = nraid_map_entries;
1663 for (i = 0; i < nraid_map_entries; i++) {
1664 logical_drive->phys_disk[i] = NULL;
1665 if (!logical_drive->offload_config)
1667 for (j = 0; j < ndevices; j++) {
1670 if (dev[j]->devtype != TYPE_DISK &&
1671 dev[j]->devtype != TYPE_ZBC)
1673 if (is_logical_device(dev[j]))
1675 if (dev[j]->ioaccel_handle != dd[i].ioaccel_handle)
1678 logical_drive->phys_disk[i] = dev[j];
1680 qdepth = min(h->nr_cmds, qdepth +
1681 logical_drive->phys_disk[i]->queue_depth);
1686 * This can happen if a physical drive is removed and
1687 * the logical drive is degraded. In that case, the RAID
1688 * map data will refer to a physical disk which isn't actually
1689 * present. And in that case offload_enabled should already
1690 * be 0, but we'll turn it off here just in case
1692 if (!logical_drive->phys_disk[i]) {
1693 logical_drive->offload_enabled = 0;
1694 logical_drive->offload_to_be_enabled = 0;
1695 logical_drive->queue_depth = 8;
1698 if (nraid_map_entries)
1700 * This is correct for reads, too high for full stripe writes,
1701 * way too high for partial stripe writes
1703 logical_drive->queue_depth = qdepth;
1705 logical_drive->queue_depth = h->nr_cmds;
1708 static void hpsa_update_log_drive_phys_drive_ptrs(struct ctlr_info *h,
1709 struct hpsa_scsi_dev_t *dev[], int ndevices)
1713 for (i = 0; i < ndevices; i++) {
1716 if (dev[i]->devtype != TYPE_DISK &&
1717 dev[i]->devtype != TYPE_ZBC)
1719 if (!is_logical_device(dev[i]))
1723 * If offload is currently enabled, the RAID map and
1724 * phys_disk[] assignment *better* not be changing
1725 * and since it isn't changing, we do not need to
1728 if (dev[i]->offload_enabled)
1731 hpsa_figure_phys_disk_ptrs(h, dev, ndevices, dev[i]);
1735 static int hpsa_add_device(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
1742 if (is_logical_device(device)) /* RAID */
1743 rc = scsi_add_device(h->scsi_host, device->bus,
1744 device->target, device->lun);
1746 rc = hpsa_add_sas_device(h->sas_host, device);
1751 static int hpsa_find_outstanding_commands_for_dev(struct ctlr_info *h,
1752 struct hpsa_scsi_dev_t *dev)
1757 for (i = 0; i < h->nr_cmds; i++) {
1758 struct CommandList *c = h->cmd_pool + i;
1759 int refcount = atomic_inc_return(&c->refcount);
1761 if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev,
1763 unsigned long flags;
1765 spin_lock_irqsave(&h->lock, flags); /* Implied MB */
1766 if (!hpsa_is_cmd_idle(c))
1768 spin_unlock_irqrestore(&h->lock, flags);
1777 static void hpsa_wait_for_outstanding_commands_for_dev(struct ctlr_info *h,
1778 struct hpsa_scsi_dev_t *device)
1784 cmds = hpsa_find_outstanding_commands_for_dev(h, device);
1789 dev_warn(&h->pdev->dev,
1790 "%s: removing device with %d outstanding commands!\n",
1796 static void hpsa_remove_device(struct ctlr_info *h,
1797 struct hpsa_scsi_dev_t *device)
1799 struct scsi_device *sdev = NULL;
1804 if (is_logical_device(device)) { /* RAID */
1805 sdev = scsi_device_lookup(h->scsi_host, device->bus,
1806 device->target, device->lun);
1808 scsi_remove_device(sdev);
1809 scsi_device_put(sdev);
1812 * We don't expect to get here. Future commands
1813 * to this device will get a selection timeout as
1814 * if the device were gone.
1816 hpsa_show_dev_msg(KERN_WARNING, h, device,
1817 "didn't find device for removal.");
1821 device->removed = 1;
1822 hpsa_wait_for_outstanding_commands_for_dev(h, device);
1824 hpsa_remove_sas_device(device);
1828 static void adjust_hpsa_scsi_table(struct ctlr_info *h,
1829 struct hpsa_scsi_dev_t *sd[], int nsds)
1831 /* sd contains scsi3 addresses and devtypes, and inquiry
1832 * data. This function takes what's in sd to be the current
1833 * reality and updates h->dev[] to reflect that reality.
1835 int i, entry, device_change, changes = 0;
1836 struct hpsa_scsi_dev_t *csd;
1837 unsigned long flags;
1838 struct hpsa_scsi_dev_t **added, **removed;
1839 int nadded, nremoved;
1842 * A reset can cause a device status to change
1843 * re-schedule the scan to see what happened.
1845 if (h->reset_in_progress) {
1846 h->drv_req_rescan = 1;
1850 added = kzalloc(sizeof(*added) * HPSA_MAX_DEVICES, GFP_KERNEL);
1851 removed = kzalloc(sizeof(*removed) * HPSA_MAX_DEVICES, GFP_KERNEL);
1853 if (!added || !removed) {
1854 dev_warn(&h->pdev->dev, "out of memory in "
1855 "adjust_hpsa_scsi_table\n");
1859 spin_lock_irqsave(&h->devlock, flags);
1861 /* find any devices in h->dev[] that are not in
1862 * sd[] and remove them from h->dev[], and for any
1863 * devices which have changed, remove the old device
1864 * info and add the new device info.
1865 * If minor device attributes change, just update
1866 * the existing device structure.
1871 while (i < h->ndevices) {
1873 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry);
1874 if (device_change == DEVICE_NOT_FOUND) {
1876 hpsa_scsi_remove_entry(h, i, removed, &nremoved);
1877 continue; /* remove ^^^, hence i not incremented */
1878 } else if (device_change == DEVICE_CHANGED) {
1880 hpsa_scsi_replace_entry(h, i, sd[entry],
1881 added, &nadded, removed, &nremoved);
1882 /* Set it to NULL to prevent it from being freed
1883 * at the bottom of hpsa_update_scsi_devices()
1886 } else if (device_change == DEVICE_UPDATED) {
1887 hpsa_scsi_update_entry(h, i, sd[entry]);
1892 /* Now, make sure every device listed in sd[] is also
1893 * listed in h->dev[], adding them if they aren't found
1896 for (i = 0; i < nsds; i++) {
1897 if (!sd[i]) /* if already added above. */
1900 /* Don't add devices which are NOT READY, FORMAT IN PROGRESS
1901 * as the SCSI mid-layer does not handle such devices well.
1902 * It relentlessly loops sending TUR at 3Hz, then READ(10)
1903 * at 160Hz, and prevents the system from coming up.
1905 if (sd[i]->volume_offline) {
1906 hpsa_show_volume_status(h, sd[i]);
1907 hpsa_show_dev_msg(KERN_INFO, h, sd[i], "offline");
1911 device_change = hpsa_scsi_find_entry(sd[i], h->dev,
1912 h->ndevices, &entry);
1913 if (device_change == DEVICE_NOT_FOUND) {
1915 if (hpsa_scsi_add_entry(h, sd[i], added, &nadded) != 0)
1917 sd[i] = NULL; /* prevent from being freed later. */
1918 } else if (device_change == DEVICE_CHANGED) {
1919 /* should never happen... */
1921 dev_warn(&h->pdev->dev,
1922 "device unexpectedly changed.\n");
1923 /* but if it does happen, we just ignore that device */
1926 hpsa_update_log_drive_phys_drive_ptrs(h, h->dev, h->ndevices);
1928 /* Now that h->dev[]->phys_disk[] is coherent, we can enable
1929 * any logical drives that need it enabled.
1931 for (i = 0; i < h->ndevices; i++) {
1932 if (h->dev[i] == NULL)
1934 h->dev[i]->offload_enabled = h->dev[i]->offload_to_be_enabled;
1937 spin_unlock_irqrestore(&h->devlock, flags);
1939 /* Monitor devices which are in one of several NOT READY states to be
1940 * brought online later. This must be done without holding h->devlock,
1941 * so don't touch h->dev[]
1943 for (i = 0; i < nsds; i++) {
1944 if (!sd[i]) /* if already added above. */
1946 if (sd[i]->volume_offline)
1947 hpsa_monitor_offline_device(h, sd[i]->scsi3addr);
1950 /* Don't notify scsi mid layer of any changes the first time through
1951 * (or if there are no changes) scsi_scan_host will do it later the
1952 * first time through.
1957 /* Notify scsi mid layer of any removed devices */
1958 for (i = 0; i < nremoved; i++) {
1959 if (removed[i] == NULL)
1961 if (removed[i]->expose_device)
1962 hpsa_remove_device(h, removed[i]);
1967 /* Notify scsi mid layer of any added devices */
1968 for (i = 0; i < nadded; i++) {
1971 if (added[i] == NULL)
1973 if (!(added[i]->expose_device))
1975 rc = hpsa_add_device(h, added[i]);
1978 dev_warn(&h->pdev->dev,
1979 "addition failed %d, device not added.", rc);
1980 /* now we have to remove it from h->dev,
1981 * since it didn't get added to scsi mid layer
1983 fixup_botched_add(h, added[i]);
1984 h->drv_req_rescan = 1;
1993 * Lookup bus/target/lun and return corresponding struct hpsa_scsi_dev_t *
1994 * Assume's h->devlock is held.
1996 static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h,
1997 int bus, int target, int lun)
2000 struct hpsa_scsi_dev_t *sd;
2002 for (i = 0; i < h->ndevices; i++) {
2004 if (sd->bus == bus && sd->target == target && sd->lun == lun)
2010 static int hpsa_slave_alloc(struct scsi_device *sdev)
2012 struct hpsa_scsi_dev_t *sd;
2013 unsigned long flags;
2014 struct ctlr_info *h;
2016 h = sdev_to_hba(sdev);
2017 spin_lock_irqsave(&h->devlock, flags);
2018 if (sdev_channel(sdev) == HPSA_PHYSICAL_DEVICE_BUS) {
2019 struct scsi_target *starget;
2020 struct sas_rphy *rphy;
2022 starget = scsi_target(sdev);
2023 rphy = target_to_rphy(starget);
2024 sd = hpsa_find_device_by_sas_rphy(h, rphy);
2026 sd->target = sdev_id(sdev);
2027 sd->lun = sdev->lun;
2030 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev),
2031 sdev_id(sdev), sdev->lun);
2033 if (sd && sd->expose_device) {
2034 atomic_set(&sd->ioaccel_cmds_out, 0);
2035 sdev->hostdata = sd;
2037 sdev->hostdata = NULL;
2038 spin_unlock_irqrestore(&h->devlock, flags);
2042 /* configure scsi device based on internal per-device structure */
2043 static int hpsa_slave_configure(struct scsi_device *sdev)
2045 struct hpsa_scsi_dev_t *sd;
2048 sd = sdev->hostdata;
2049 sdev->no_uld_attach = !sd || !sd->expose_device;
2052 queue_depth = sd->queue_depth != 0 ?
2053 sd->queue_depth : sdev->host->can_queue;
2055 queue_depth = sdev->host->can_queue;
2057 scsi_change_queue_depth(sdev, queue_depth);
2062 static void hpsa_slave_destroy(struct scsi_device *sdev)
2064 /* nothing to do. */
2067 static void hpsa_free_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
2071 if (!h->ioaccel2_cmd_sg_list)
2073 for (i = 0; i < h->nr_cmds; i++) {
2074 kfree(h->ioaccel2_cmd_sg_list[i]);
2075 h->ioaccel2_cmd_sg_list[i] = NULL;
2077 kfree(h->ioaccel2_cmd_sg_list);
2078 h->ioaccel2_cmd_sg_list = NULL;
2081 static int hpsa_allocate_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
2085 if (h->chainsize <= 0)
2088 h->ioaccel2_cmd_sg_list =
2089 kzalloc(sizeof(*h->ioaccel2_cmd_sg_list) * h->nr_cmds,
2091 if (!h->ioaccel2_cmd_sg_list)
2093 for (i = 0; i < h->nr_cmds; i++) {
2094 h->ioaccel2_cmd_sg_list[i] =
2095 kmalloc(sizeof(*h->ioaccel2_cmd_sg_list[i]) *
2096 h->maxsgentries, GFP_KERNEL);
2097 if (!h->ioaccel2_cmd_sg_list[i])
2103 hpsa_free_ioaccel2_sg_chain_blocks(h);
2107 static void hpsa_free_sg_chain_blocks(struct ctlr_info *h)
2111 if (!h->cmd_sg_list)
2113 for (i = 0; i < h->nr_cmds; i++) {
2114 kfree(h->cmd_sg_list[i]);
2115 h->cmd_sg_list[i] = NULL;
2117 kfree(h->cmd_sg_list);
2118 h->cmd_sg_list = NULL;
2121 static int hpsa_alloc_sg_chain_blocks(struct ctlr_info *h)
2125 if (h->chainsize <= 0)
2128 h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds,
2130 if (!h->cmd_sg_list) {
2131 dev_err(&h->pdev->dev, "Failed to allocate SG list\n");
2134 for (i = 0; i < h->nr_cmds; i++) {
2135 h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) *
2136 h->chainsize, GFP_KERNEL);
2137 if (!h->cmd_sg_list[i]) {
2138 dev_err(&h->pdev->dev, "Failed to allocate cmd SG\n");
2145 hpsa_free_sg_chain_blocks(h);
2149 static int hpsa_map_ioaccel2_sg_chain_block(struct ctlr_info *h,
2150 struct io_accel2_cmd *cp, struct CommandList *c)
2152 struct ioaccel2_sg_element *chain_block;
2156 chain_block = h->ioaccel2_cmd_sg_list[c->cmdindex];
2157 chain_size = le32_to_cpu(cp->sg[0].length);
2158 temp64 = pci_map_single(h->pdev, chain_block, chain_size,
2160 if (dma_mapping_error(&h->pdev->dev, temp64)) {
2161 /* prevent subsequent unmapping */
2162 cp->sg->address = 0;
2165 cp->sg->address = cpu_to_le64(temp64);
2169 static void hpsa_unmap_ioaccel2_sg_chain_block(struct ctlr_info *h,
2170 struct io_accel2_cmd *cp)
2172 struct ioaccel2_sg_element *chain_sg;
2177 temp64 = le64_to_cpu(chain_sg->address);
2178 chain_size = le32_to_cpu(cp->sg[0].length);
2179 pci_unmap_single(h->pdev, temp64, chain_size, PCI_DMA_TODEVICE);
2182 static int hpsa_map_sg_chain_block(struct ctlr_info *h,
2183 struct CommandList *c)
2185 struct SGDescriptor *chain_sg, *chain_block;
2189 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
2190 chain_block = h->cmd_sg_list[c->cmdindex];
2191 chain_sg->Ext = cpu_to_le32(HPSA_SG_CHAIN);
2192 chain_len = sizeof(*chain_sg) *
2193 (le16_to_cpu(c->Header.SGTotal) - h->max_cmd_sg_entries);
2194 chain_sg->Len = cpu_to_le32(chain_len);
2195 temp64 = pci_map_single(h->pdev, chain_block, chain_len,
2197 if (dma_mapping_error(&h->pdev->dev, temp64)) {
2198 /* prevent subsequent unmapping */
2199 chain_sg->Addr = cpu_to_le64(0);
2202 chain_sg->Addr = cpu_to_le64(temp64);
2206 static void hpsa_unmap_sg_chain_block(struct ctlr_info *h,
2207 struct CommandList *c)
2209 struct SGDescriptor *chain_sg;
2211 if (le16_to_cpu(c->Header.SGTotal) <= h->max_cmd_sg_entries)
2214 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
2215 pci_unmap_single(h->pdev, le64_to_cpu(chain_sg->Addr),
2216 le32_to_cpu(chain_sg->Len), PCI_DMA_TODEVICE);
2220 /* Decode the various types of errors on ioaccel2 path.
2221 * Return 1 for any error that should generate a RAID path retry.
2222 * Return 0 for errors that don't require a RAID path retry.
2224 static int handle_ioaccel_mode2_error(struct ctlr_info *h,
2225 struct CommandList *c,
2226 struct scsi_cmnd *cmd,
2227 struct io_accel2_cmd *c2,
2228 struct hpsa_scsi_dev_t *dev)
2232 u32 ioaccel2_resid = 0;
2234 switch (c2->error_data.serv_response) {
2235 case IOACCEL2_SERV_RESPONSE_COMPLETE:
2236 switch (c2->error_data.status) {
2237 case IOACCEL2_STATUS_SR_TASK_COMP_GOOD:
2239 case IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND:
2240 cmd->result |= SAM_STAT_CHECK_CONDITION;
2241 if (c2->error_data.data_present !=
2242 IOACCEL2_SENSE_DATA_PRESENT) {
2243 memset(cmd->sense_buffer, 0,
2244 SCSI_SENSE_BUFFERSIZE);
2247 /* copy the sense data */
2248 data_len = c2->error_data.sense_data_len;
2249 if (data_len > SCSI_SENSE_BUFFERSIZE)
2250 data_len = SCSI_SENSE_BUFFERSIZE;
2251 if (data_len > sizeof(c2->error_data.sense_data_buff))
2253 sizeof(c2->error_data.sense_data_buff);
2254 memcpy(cmd->sense_buffer,
2255 c2->error_data.sense_data_buff, data_len);
2258 case IOACCEL2_STATUS_SR_TASK_COMP_BUSY:
2261 case IOACCEL2_STATUS_SR_TASK_COMP_RES_CON:
2264 case IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL:
2267 case IOACCEL2_STATUS_SR_TASK_COMP_ABORTED:
2275 case IOACCEL2_SERV_RESPONSE_FAILURE:
2276 switch (c2->error_data.status) {
2277 case IOACCEL2_STATUS_SR_IO_ERROR:
2278 case IOACCEL2_STATUS_SR_IO_ABORTED:
2279 case IOACCEL2_STATUS_SR_OVERRUN:
2282 case IOACCEL2_STATUS_SR_UNDERRUN:
2283 cmd->result = (DID_OK << 16); /* host byte */
2284 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
2285 ioaccel2_resid = get_unaligned_le32(
2286 &c2->error_data.resid_cnt[0]);
2287 scsi_set_resid(cmd, ioaccel2_resid);
2289 case IOACCEL2_STATUS_SR_NO_PATH_TO_DEVICE:
2290 case IOACCEL2_STATUS_SR_INVALID_DEVICE:
2291 case IOACCEL2_STATUS_SR_IOACCEL_DISABLED:
2293 * Did an HBA disk disappear? We will eventually
2294 * get a state change event from the controller but
2295 * in the meantime, we need to tell the OS that the
2296 * HBA disk is no longer there and stop I/O
2297 * from going down. This allows the potential re-insert
2298 * of the disk to get the same device node.
2300 if (dev->physical_device && dev->expose_device) {
2301 cmd->result = DID_NO_CONNECT << 16;
2303 h->drv_req_rescan = 1;
2304 dev_warn(&h->pdev->dev,
2305 "%s: device is gone!\n", __func__);
2308 * Retry by sending down the RAID path.
2309 * We will get an event from ctlr to
2310 * trigger rescan regardless.
2318 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
2320 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
2322 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
2325 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
2332 return retry; /* retry on raid path? */
2335 static void hpsa_cmd_resolve_events(struct ctlr_info *h,
2336 struct CommandList *c)
2338 bool do_wake = false;
2341 * Prevent the following race in the abort handler:
2343 * 1. LLD is requested to abort a SCSI command
2344 * 2. The SCSI command completes
2345 * 3. The struct CommandList associated with step 2 is made available
2346 * 4. New I/O request to LLD to another LUN re-uses struct CommandList
2347 * 5. Abort handler follows scsi_cmnd->host_scribble and
2348 * finds struct CommandList and tries to aborts it
2349 * Now we have aborted the wrong command.
2351 * Reset c->scsi_cmd here so that the abort or reset handler will know
2352 * this command has completed. Then, check to see if the handler is
2353 * waiting for this command, and, if so, wake it.
2355 c->scsi_cmd = SCSI_CMD_IDLE;
2356 mb(); /* Declare command idle before checking for pending events. */
2357 if (c->abort_pending) {
2359 c->abort_pending = false;
2361 if (c->reset_pending) {
2362 unsigned long flags;
2363 struct hpsa_scsi_dev_t *dev;
2366 * There appears to be a reset pending; lock the lock and
2367 * reconfirm. If so, then decrement the count of outstanding
2368 * commands and wake the reset command if this is the last one.
2370 spin_lock_irqsave(&h->lock, flags);
2371 dev = c->reset_pending; /* Re-fetch under the lock. */
2372 if (dev && atomic_dec_and_test(&dev->reset_cmds_out))
2374 c->reset_pending = NULL;
2375 spin_unlock_irqrestore(&h->lock, flags);
2379 wake_up_all(&h->event_sync_wait_queue);
2382 static void hpsa_cmd_resolve_and_free(struct ctlr_info *h,
2383 struct CommandList *c)
2385 hpsa_cmd_resolve_events(h, c);
2386 cmd_tagged_free(h, c);
2389 static void hpsa_cmd_free_and_done(struct ctlr_info *h,
2390 struct CommandList *c, struct scsi_cmnd *cmd)
2392 hpsa_cmd_resolve_and_free(h, c);
2393 if (cmd && cmd->scsi_done)
2394 cmd->scsi_done(cmd);
2397 static void hpsa_retry_cmd(struct ctlr_info *h, struct CommandList *c)
2399 INIT_WORK(&c->work, hpsa_command_resubmit_worker);
2400 queue_work_on(raw_smp_processor_id(), h->resubmit_wq, &c->work);
2403 static void hpsa_set_scsi_cmd_aborted(struct scsi_cmnd *cmd)
2405 cmd->result = DID_ABORT << 16;
2408 static void hpsa_cmd_abort_and_free(struct ctlr_info *h, struct CommandList *c,
2409 struct scsi_cmnd *cmd)
2411 hpsa_set_scsi_cmd_aborted(cmd);
2412 dev_warn(&h->pdev->dev, "CDB %16phN was aborted with status 0x%x\n",
2413 c->Request.CDB, c->err_info->ScsiStatus);
2414 hpsa_cmd_resolve_and_free(h, c);
2417 static void process_ioaccel2_completion(struct ctlr_info *h,
2418 struct CommandList *c, struct scsi_cmnd *cmd,
2419 struct hpsa_scsi_dev_t *dev)
2421 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
2423 /* check for good status */
2424 if (likely(c2->error_data.serv_response == 0 &&
2425 c2->error_data.status == 0))
2426 return hpsa_cmd_free_and_done(h, c, cmd);
2429 * Any RAID offload error results in retry which will use
2430 * the normal I/O path so the controller can handle whatever's
2433 if (is_logical_device(dev) &&
2434 c2->error_data.serv_response ==
2435 IOACCEL2_SERV_RESPONSE_FAILURE) {
2436 if (c2->error_data.status ==
2437 IOACCEL2_STATUS_SR_IOACCEL_DISABLED) {
2438 dev->offload_enabled = 0;
2439 dev->offload_to_be_enabled = 0;
2442 return hpsa_retry_cmd(h, c);
2445 if (handle_ioaccel_mode2_error(h, c, cmd, c2, dev))
2446 return hpsa_retry_cmd(h, c);
2448 return hpsa_cmd_free_and_done(h, c, cmd);
2451 /* Returns 0 on success, < 0 otherwise. */
2452 static int hpsa_evaluate_tmf_status(struct ctlr_info *h,
2453 struct CommandList *cp)
2455 u8 tmf_status = cp->err_info->ScsiStatus;
2457 switch (tmf_status) {
2458 case CISS_TMF_COMPLETE:
2460 * CISS_TMF_COMPLETE never happens, instead,
2461 * ei->CommandStatus == 0 for this case.
2463 case CISS_TMF_SUCCESS:
2465 case CISS_TMF_INVALID_FRAME:
2466 case CISS_TMF_NOT_SUPPORTED:
2467 case CISS_TMF_FAILED:
2468 case CISS_TMF_WRONG_LUN:
2469 case CISS_TMF_OVERLAPPED_TAG:
2472 dev_warn(&h->pdev->dev, "Unknown TMF status: 0x%02x\n",
2479 static void complete_scsi_command(struct CommandList *cp)
2481 struct scsi_cmnd *cmd;
2482 struct ctlr_info *h;
2483 struct ErrorInfo *ei;
2484 struct hpsa_scsi_dev_t *dev;
2485 struct io_accel2_cmd *c2;
2488 u8 asc; /* additional sense code */
2489 u8 ascq; /* additional sense code qualifier */
2490 unsigned long sense_data_size;
2497 cmd->result = DID_NO_CONNECT << 16;
2498 return hpsa_cmd_free_and_done(h, cp, cmd);
2501 dev = cmd->device->hostdata;
2503 cmd->result = DID_NO_CONNECT << 16;
2504 return hpsa_cmd_free_and_done(h, cp, cmd);
2506 c2 = &h->ioaccel2_cmd_pool[cp->cmdindex];
2508 scsi_dma_unmap(cmd); /* undo the DMA mappings */
2509 if ((cp->cmd_type == CMD_SCSI) &&
2510 (le16_to_cpu(cp->Header.SGTotal) > h->max_cmd_sg_entries))
2511 hpsa_unmap_sg_chain_block(h, cp);
2513 if ((cp->cmd_type == CMD_IOACCEL2) &&
2514 (c2->sg[0].chain_indicator == IOACCEL2_CHAIN))
2515 hpsa_unmap_ioaccel2_sg_chain_block(h, c2);
2517 cmd->result = (DID_OK << 16); /* host byte */
2518 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
2520 if (cp->cmd_type == CMD_IOACCEL2 || cp->cmd_type == CMD_IOACCEL1) {
2521 if (dev->physical_device && dev->expose_device &&
2523 cmd->result = DID_NO_CONNECT << 16;
2524 return hpsa_cmd_free_and_done(h, cp, cmd);
2526 if (likely(cp->phys_disk != NULL))
2527 atomic_dec(&cp->phys_disk->ioaccel_cmds_out);
2531 * We check for lockup status here as it may be set for
2532 * CMD_SCSI, CMD_IOACCEL1 and CMD_IOACCEL2 commands by
2533 * fail_all_oustanding_cmds()
2535 if (unlikely(ei->CommandStatus == CMD_CTLR_LOCKUP)) {
2536 /* DID_NO_CONNECT will prevent a retry */
2537 cmd->result = DID_NO_CONNECT << 16;
2538 return hpsa_cmd_free_and_done(h, cp, cmd);
2541 if ((unlikely(hpsa_is_pending_event(cp)))) {
2542 if (cp->reset_pending)
2543 return hpsa_cmd_resolve_and_free(h, cp);
2544 if (cp->abort_pending)
2545 return hpsa_cmd_abort_and_free(h, cp, cmd);
2548 if (cp->cmd_type == CMD_IOACCEL2)
2549 return process_ioaccel2_completion(h, cp, cmd, dev);
2551 scsi_set_resid(cmd, ei->ResidualCnt);
2552 if (ei->CommandStatus == 0)
2553 return hpsa_cmd_free_and_done(h, cp, cmd);
2555 /* For I/O accelerator commands, copy over some fields to the normal
2556 * CISS header used below for error handling.
2558 if (cp->cmd_type == CMD_IOACCEL1) {
2559 struct io_accel1_cmd *c = &h->ioaccel_cmd_pool[cp->cmdindex];
2560 cp->Header.SGList = scsi_sg_count(cmd);
2561 cp->Header.SGTotal = cpu_to_le16(cp->Header.SGList);
2562 cp->Request.CDBLen = le16_to_cpu(c->io_flags) &
2563 IOACCEL1_IOFLAGS_CDBLEN_MASK;
2564 cp->Header.tag = c->tag;
2565 memcpy(cp->Header.LUN.LunAddrBytes, c->CISS_LUN, 8);
2566 memcpy(cp->Request.CDB, c->CDB, cp->Request.CDBLen);
2568 /* Any RAID offload error results in retry which will use
2569 * the normal I/O path so the controller can handle whatever's
2572 if (is_logical_device(dev)) {
2573 if (ei->CommandStatus == CMD_IOACCEL_DISABLED)
2574 dev->offload_enabled = 0;
2575 return hpsa_retry_cmd(h, cp);
2579 /* an error has occurred */
2580 switch (ei->CommandStatus) {
2582 case CMD_TARGET_STATUS:
2583 cmd->result |= ei->ScsiStatus;
2584 /* copy the sense data */
2585 if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo))
2586 sense_data_size = SCSI_SENSE_BUFFERSIZE;
2588 sense_data_size = sizeof(ei->SenseInfo);
2589 if (ei->SenseLen < sense_data_size)
2590 sense_data_size = ei->SenseLen;
2591 memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size);
2593 decode_sense_data(ei->SenseInfo, sense_data_size,
2594 &sense_key, &asc, &ascq);
2595 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
2596 if (sense_key == ABORTED_COMMAND) {
2597 cmd->result |= DID_SOFT_ERROR << 16;
2602 /* Problem was not a check condition
2603 * Pass it up to the upper layers...
2605 if (ei->ScsiStatus) {
2606 dev_warn(&h->pdev->dev, "cp %p has status 0x%x "
2607 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
2608 "Returning result: 0x%x\n",
2610 sense_key, asc, ascq,
2612 } else { /* scsi status is zero??? How??? */
2613 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. "
2614 "Returning no connection.\n", cp),
2616 /* Ordinarily, this case should never happen,
2617 * but there is a bug in some released firmware
2618 * revisions that allows it to happen if, for
2619 * example, a 4100 backplane loses power and
2620 * the tape drive is in it. We assume that
2621 * it's a fatal error of some kind because we
2622 * can't show that it wasn't. We will make it
2623 * look like selection timeout since that is
2624 * the most common reason for this to occur,
2625 * and it's severe enough.
2628 cmd->result = DID_NO_CONNECT << 16;
2632 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
2634 case CMD_DATA_OVERRUN:
2635 dev_warn(&h->pdev->dev,
2636 "CDB %16phN data overrun\n", cp->Request.CDB);
2639 /* print_bytes(cp, sizeof(*cp), 1, 0);
2641 /* We get CMD_INVALID if you address a non-existent device
2642 * instead of a selection timeout (no response). You will
2643 * see this if you yank out a drive, then try to access it.
2644 * This is kind of a shame because it means that any other
2645 * CMD_INVALID (e.g. driver bug) will get interpreted as a
2646 * missing target. */
2647 cmd->result = DID_NO_CONNECT << 16;
2650 case CMD_PROTOCOL_ERR:
2651 cmd->result = DID_ERROR << 16;
2652 dev_warn(&h->pdev->dev, "CDB %16phN : protocol error\n",
2655 case CMD_HARDWARE_ERR:
2656 cmd->result = DID_ERROR << 16;
2657 dev_warn(&h->pdev->dev, "CDB %16phN : hardware error\n",
2660 case CMD_CONNECTION_LOST:
2661 cmd->result = DID_ERROR << 16;
2662 dev_warn(&h->pdev->dev, "CDB %16phN : connection lost\n",
2666 /* Return now to avoid calling scsi_done(). */
2667 return hpsa_cmd_abort_and_free(h, cp, cmd);
2668 case CMD_ABORT_FAILED:
2669 cmd->result = DID_ERROR << 16;
2670 dev_warn(&h->pdev->dev, "CDB %16phN : abort failed\n",
2673 case CMD_UNSOLICITED_ABORT:
2674 cmd->result = DID_SOFT_ERROR << 16; /* retry the command */
2675 dev_warn(&h->pdev->dev, "CDB %16phN : unsolicited abort\n",
2679 cmd->result = DID_TIME_OUT << 16;
2680 dev_warn(&h->pdev->dev, "CDB %16phN timed out\n",
2683 case CMD_UNABORTABLE:
2684 cmd->result = DID_ERROR << 16;
2685 dev_warn(&h->pdev->dev, "Command unabortable\n");
2687 case CMD_TMF_STATUS:
2688 if (hpsa_evaluate_tmf_status(h, cp)) /* TMF failed? */
2689 cmd->result = DID_ERROR << 16;
2691 case CMD_IOACCEL_DISABLED:
2692 /* This only handles the direct pass-through case since RAID
2693 * offload is handled above. Just attempt a retry.
2695 cmd->result = DID_SOFT_ERROR << 16;
2696 dev_warn(&h->pdev->dev,
2697 "cp %p had HP SSD Smart Path error\n", cp);
2700 cmd->result = DID_ERROR << 16;
2701 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n",
2702 cp, ei->CommandStatus);
2705 return hpsa_cmd_free_and_done(h, cp, cmd);
2708 static void hpsa_pci_unmap(struct pci_dev *pdev,
2709 struct CommandList *c, int sg_used, int data_direction)
2713 for (i = 0; i < sg_used; i++)
2714 pci_unmap_single(pdev, (dma_addr_t) le64_to_cpu(c->SG[i].Addr),
2715 le32_to_cpu(c->SG[i].Len),
2719 static int hpsa_map_one(struct pci_dev *pdev,
2720 struct CommandList *cp,
2727 if (buflen == 0 || data_direction == PCI_DMA_NONE) {
2728 cp->Header.SGList = 0;
2729 cp->Header.SGTotal = cpu_to_le16(0);
2733 addr64 = pci_map_single(pdev, buf, buflen, data_direction);
2734 if (dma_mapping_error(&pdev->dev, addr64)) {
2735 /* Prevent subsequent unmap of something never mapped */
2736 cp->Header.SGList = 0;
2737 cp->Header.SGTotal = cpu_to_le16(0);
2740 cp->SG[0].Addr = cpu_to_le64(addr64);
2741 cp->SG[0].Len = cpu_to_le32(buflen);
2742 cp->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* we are not chaining */
2743 cp->Header.SGList = 1; /* no. SGs contig in this cmd */
2744 cp->Header.SGTotal = cpu_to_le16(1); /* total sgs in cmd list */
2748 #define NO_TIMEOUT ((unsigned long) -1)
2749 #define DEFAULT_TIMEOUT 30000 /* milliseconds */
2750 static int hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h,
2751 struct CommandList *c, int reply_queue, unsigned long timeout_msecs)
2753 DECLARE_COMPLETION_ONSTACK(wait);
2756 __enqueue_cmd_and_start_io(h, c, reply_queue);
2757 if (timeout_msecs == NO_TIMEOUT) {
2758 /* TODO: get rid of this no-timeout thing */
2759 wait_for_completion_io(&wait);
2762 if (!wait_for_completion_io_timeout(&wait,
2763 msecs_to_jiffies(timeout_msecs))) {
2764 dev_warn(&h->pdev->dev, "Command timed out.\n");
2770 static int hpsa_scsi_do_simple_cmd(struct ctlr_info *h, struct CommandList *c,
2771 int reply_queue, unsigned long timeout_msecs)
2773 if (unlikely(lockup_detected(h))) {
2774 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
2777 return hpsa_scsi_do_simple_cmd_core(h, c, reply_queue, timeout_msecs);
2780 static u32 lockup_detected(struct ctlr_info *h)
2783 u32 rc, *lockup_detected;
2786 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
2787 rc = *lockup_detected;
2792 #define MAX_DRIVER_CMD_RETRIES 25
2793 static int hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
2794 struct CommandList *c, int data_direction, unsigned long timeout_msecs)
2796 int backoff_time = 10, retry_count = 0;
2800 memset(c->err_info, 0, sizeof(*c->err_info));
2801 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
2806 if (retry_count > 3) {
2807 msleep(backoff_time);
2808 if (backoff_time < 1000)
2811 } while ((check_for_unit_attention(h, c) ||
2812 check_for_busy(h, c)) &&
2813 retry_count <= MAX_DRIVER_CMD_RETRIES);
2814 hpsa_pci_unmap(h->pdev, c, 1, data_direction);
2815 if (retry_count > MAX_DRIVER_CMD_RETRIES)
2820 static void hpsa_print_cmd(struct ctlr_info *h, char *txt,
2821 struct CommandList *c)
2823 const u8 *cdb = c->Request.CDB;
2824 const u8 *lun = c->Header.LUN.LunAddrBytes;
2826 dev_warn(&h->pdev->dev, "%s: LUN:%02x%02x%02x%02x%02x%02x%02x%02x"
2827 " CDB:%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
2828 txt, lun[0], lun[1], lun[2], lun[3],
2829 lun[4], lun[5], lun[6], lun[7],
2830 cdb[0], cdb[1], cdb[2], cdb[3],
2831 cdb[4], cdb[5], cdb[6], cdb[7],
2832 cdb[8], cdb[9], cdb[10], cdb[11],
2833 cdb[12], cdb[13], cdb[14], cdb[15]);
2836 static void hpsa_scsi_interpret_error(struct ctlr_info *h,
2837 struct CommandList *cp)
2839 const struct ErrorInfo *ei = cp->err_info;
2840 struct device *d = &cp->h->pdev->dev;
2841 u8 sense_key, asc, ascq;
2844 switch (ei->CommandStatus) {
2845 case CMD_TARGET_STATUS:
2846 if (ei->SenseLen > sizeof(ei->SenseInfo))
2847 sense_len = sizeof(ei->SenseInfo);
2849 sense_len = ei->SenseLen;
2850 decode_sense_data(ei->SenseInfo, sense_len,
2851 &sense_key, &asc, &ascq);
2852 hpsa_print_cmd(h, "SCSI status", cp);
2853 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION)
2854 dev_warn(d, "SCSI Status = 02, Sense key = 0x%02x, ASC = 0x%02x, ASCQ = 0x%02x\n",
2855 sense_key, asc, ascq);
2857 dev_warn(d, "SCSI Status = 0x%02x\n", ei->ScsiStatus);
2858 if (ei->ScsiStatus == 0)
2859 dev_warn(d, "SCSI status is abnormally zero. "
2860 "(probably indicates selection timeout "
2861 "reported incorrectly due to a known "
2862 "firmware bug, circa July, 2001.)\n");
2864 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
2866 case CMD_DATA_OVERRUN:
2867 hpsa_print_cmd(h, "overrun condition", cp);
2870 /* controller unfortunately reports SCSI passthru's
2871 * to non-existent targets as invalid commands.
2873 hpsa_print_cmd(h, "invalid command", cp);
2874 dev_warn(d, "probably means device no longer present\n");
2877 case CMD_PROTOCOL_ERR:
2878 hpsa_print_cmd(h, "protocol error", cp);
2880 case CMD_HARDWARE_ERR:
2881 hpsa_print_cmd(h, "hardware error", cp);
2883 case CMD_CONNECTION_LOST:
2884 hpsa_print_cmd(h, "connection lost", cp);
2887 hpsa_print_cmd(h, "aborted", cp);
2889 case CMD_ABORT_FAILED:
2890 hpsa_print_cmd(h, "abort failed", cp);
2892 case CMD_UNSOLICITED_ABORT:
2893 hpsa_print_cmd(h, "unsolicited abort", cp);
2896 hpsa_print_cmd(h, "timed out", cp);
2898 case CMD_UNABORTABLE:
2899 hpsa_print_cmd(h, "unabortable", cp);
2901 case CMD_CTLR_LOCKUP:
2902 hpsa_print_cmd(h, "controller lockup detected", cp);
2905 hpsa_print_cmd(h, "unknown status", cp);
2906 dev_warn(d, "Unknown command status %x\n",
2911 static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
2912 u16 page, unsigned char *buf,
2913 unsigned char bufsize)
2916 struct CommandList *c;
2917 struct ErrorInfo *ei;
2921 if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize,
2922 page, scsi3addr, TYPE_CMD)) {
2926 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
2927 PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
2931 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
2932 hpsa_scsi_interpret_error(h, c);
2940 static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr,
2941 u8 reset_type, int reply_queue)
2944 struct CommandList *c;
2945 struct ErrorInfo *ei;
2950 /* fill_cmd can't fail here, no data buffer to map. */
2951 (void) fill_cmd(c, reset_type, h, NULL, 0, 0,
2952 scsi3addr, TYPE_MSG);
2953 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, DEFAULT_TIMEOUT);
2955 dev_warn(&h->pdev->dev, "Failed to send reset command\n");
2958 /* no unmap needed here because no data xfer. */
2961 if (ei->CommandStatus != 0) {
2962 hpsa_scsi_interpret_error(h, c);
2970 static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c,
2971 struct hpsa_scsi_dev_t *dev,
2972 unsigned char *scsi3addr)
2976 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
2977 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
2979 if (hpsa_is_cmd_idle(c))
2982 switch (c->cmd_type) {
2984 case CMD_IOCTL_PEND:
2985 match = !memcmp(scsi3addr, &c->Header.LUN.LunAddrBytes,
2986 sizeof(c->Header.LUN.LunAddrBytes));
2991 if (c->phys_disk == dev) {
2992 /* HBA mode match */
2995 /* Possible RAID mode -- check each phys dev. */
2996 /* FIXME: Do we need to take out a lock here? If
2997 * so, we could just call hpsa_get_pdisk_of_ioaccel2()
2999 for (i = 0; i < dev->nphysical_disks && !match; i++) {
3000 /* FIXME: an alternate test might be
3002 * match = dev->phys_disk[i]->ioaccel_handle
3003 * == c2->scsi_nexus; */
3004 match = dev->phys_disk[i] == c->phys_disk;
3010 for (i = 0; i < dev->nphysical_disks && !match; i++) {
3011 match = dev->phys_disk[i]->ioaccel_handle ==
3012 le32_to_cpu(ac->it_nexus);
3016 case 0: /* The command is in the middle of being initialized. */
3021 dev_err(&h->pdev->dev, "unexpected cmd_type: %d\n",
3029 static int hpsa_do_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev,
3030 unsigned char *scsi3addr, u8 reset_type, int reply_queue)
3035 /* We can really only handle one reset at a time */
3036 if (mutex_lock_interruptible(&h->reset_mutex) == -EINTR) {
3037 dev_warn(&h->pdev->dev, "concurrent reset wait interrupted.\n");
3041 BUG_ON(atomic_read(&dev->reset_cmds_out) != 0);
3043 for (i = 0; i < h->nr_cmds; i++) {
3044 struct CommandList *c = h->cmd_pool + i;
3045 int refcount = atomic_inc_return(&c->refcount);
3047 if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev, scsi3addr)) {
3048 unsigned long flags;
3051 * Mark the target command as having a reset pending,
3052 * then lock a lock so that the command cannot complete
3053 * while we're considering it. If the command is not
3054 * idle then count it; otherwise revoke the event.
3056 c->reset_pending = dev;
3057 spin_lock_irqsave(&h->lock, flags); /* Implied MB */
3058 if (!hpsa_is_cmd_idle(c))
3059 atomic_inc(&dev->reset_cmds_out);
3061 c->reset_pending = NULL;
3062 spin_unlock_irqrestore(&h->lock, flags);
3068 rc = hpsa_send_reset(h, scsi3addr, reset_type, reply_queue);
3070 wait_event(h->event_sync_wait_queue,
3071 atomic_read(&dev->reset_cmds_out) == 0 ||
3072 lockup_detected(h));
3074 if (unlikely(lockup_detected(h))) {
3075 dev_warn(&h->pdev->dev,
3076 "Controller lockup detected during reset wait\n");
3081 atomic_set(&dev->reset_cmds_out, 0);
3083 mutex_unlock(&h->reset_mutex);
3087 static void hpsa_get_raid_level(struct ctlr_info *h,
3088 unsigned char *scsi3addr, unsigned char *raid_level)
3093 *raid_level = RAID_UNKNOWN;
3094 buf = kzalloc(64, GFP_KERNEL);
3098 if (!hpsa_vpd_page_supported(h, scsi3addr,
3099 HPSA_VPD_LV_DEVICE_GEOMETRY))
3102 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE |
3103 HPSA_VPD_LV_DEVICE_GEOMETRY, buf, 64);
3106 *raid_level = buf[8];
3107 if (*raid_level > RAID_UNKNOWN)
3108 *raid_level = RAID_UNKNOWN;
3114 #define HPSA_MAP_DEBUG
3115 #ifdef HPSA_MAP_DEBUG
3116 static void hpsa_debug_map_buff(struct ctlr_info *h, int rc,
3117 struct raid_map_data *map_buff)
3119 struct raid_map_disk_data *dd = &map_buff->data[0];
3121 u16 map_cnt, row_cnt, disks_per_row;
3126 /* Show details only if debugging has been activated. */
3127 if (h->raid_offload_debug < 2)
3130 dev_info(&h->pdev->dev, "structure_size = %u\n",
3131 le32_to_cpu(map_buff->structure_size));
3132 dev_info(&h->pdev->dev, "volume_blk_size = %u\n",
3133 le32_to_cpu(map_buff->volume_blk_size));
3134 dev_info(&h->pdev->dev, "volume_blk_cnt = 0x%llx\n",
3135 le64_to_cpu(map_buff->volume_blk_cnt));
3136 dev_info(&h->pdev->dev, "physicalBlockShift = %u\n",
3137 map_buff->phys_blk_shift);
3138 dev_info(&h->pdev->dev, "parity_rotation_shift = %u\n",
3139 map_buff->parity_rotation_shift);
3140 dev_info(&h->pdev->dev, "strip_size = %u\n",
3141 le16_to_cpu(map_buff->strip_size));
3142 dev_info(&h->pdev->dev, "disk_starting_blk = 0x%llx\n",
3143 le64_to_cpu(map_buff->disk_starting_blk));
3144 dev_info(&h->pdev->dev, "disk_blk_cnt = 0x%llx\n",
3145 le64_to_cpu(map_buff->disk_blk_cnt));
3146 dev_info(&h->pdev->dev, "data_disks_per_row = %u\n",
3147 le16_to_cpu(map_buff->data_disks_per_row));
3148 dev_info(&h->pdev->dev, "metadata_disks_per_row = %u\n",
3149 le16_to_cpu(map_buff->metadata_disks_per_row));
3150 dev_info(&h->pdev->dev, "row_cnt = %u\n",
3151 le16_to_cpu(map_buff->row_cnt));
3152 dev_info(&h->pdev->dev, "layout_map_count = %u\n",
3153 le16_to_cpu(map_buff->layout_map_count));
3154 dev_info(&h->pdev->dev, "flags = 0x%x\n",
3155 le16_to_cpu(map_buff->flags));
3156 dev_info(&h->pdev->dev, "encrypytion = %s\n",
3157 le16_to_cpu(map_buff->flags) &
3158 RAID_MAP_FLAG_ENCRYPT_ON ? "ON" : "OFF");
3159 dev_info(&h->pdev->dev, "dekindex = %u\n",
3160 le16_to_cpu(map_buff->dekindex));
3161 map_cnt = le16_to_cpu(map_buff->layout_map_count);
3162 for (map = 0; map < map_cnt; map++) {
3163 dev_info(&h->pdev->dev, "Map%u:\n", map);
3164 row_cnt = le16_to_cpu(map_buff->row_cnt);
3165 for (row = 0; row < row_cnt; row++) {
3166 dev_info(&h->pdev->dev, " Row%u:\n", row);
3168 le16_to_cpu(map_buff->data_disks_per_row);
3169 for (col = 0; col < disks_per_row; col++, dd++)
3170 dev_info(&h->pdev->dev,
3171 " D%02u: h=0x%04x xor=%u,%u\n",
3172 col, dd->ioaccel_handle,
3173 dd->xor_mult[0], dd->xor_mult[1]);
3175 le16_to_cpu(map_buff->metadata_disks_per_row);
3176 for (col = 0; col < disks_per_row; col++, dd++)
3177 dev_info(&h->pdev->dev,
3178 " M%02u: h=0x%04x xor=%u,%u\n",
3179 col, dd->ioaccel_handle,
3180 dd->xor_mult[0], dd->xor_mult[1]);
3185 static void hpsa_debug_map_buff(__attribute__((unused)) struct ctlr_info *h,
3186 __attribute__((unused)) int rc,
3187 __attribute__((unused)) struct raid_map_data *map_buff)
3192 static int hpsa_get_raid_map(struct ctlr_info *h,
3193 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
3196 struct CommandList *c;
3197 struct ErrorInfo *ei;
3201 if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map,
3202 sizeof(this_device->raid_map), 0,
3203 scsi3addr, TYPE_CMD)) {
3204 dev_warn(&h->pdev->dev, "hpsa_get_raid_map fill_cmd failed\n");
3208 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3209 PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
3213 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3214 hpsa_scsi_interpret_error(h, c);
3220 /* @todo in the future, dynamically allocate RAID map memory */
3221 if (le32_to_cpu(this_device->raid_map.structure_size) >
3222 sizeof(this_device->raid_map)) {
3223 dev_warn(&h->pdev->dev, "RAID map size is too large!\n");
3226 hpsa_debug_map_buff(h, rc, &this_device->raid_map);
3233 static int hpsa_bmic_sense_subsystem_information(struct ctlr_info *h,
3234 unsigned char scsi3addr[], u16 bmic_device_index,
3235 struct bmic_sense_subsystem_info *buf, size_t bufsize)
3238 struct CommandList *c;
3239 struct ErrorInfo *ei;
3243 rc = fill_cmd(c, BMIC_SENSE_SUBSYSTEM_INFORMATION, h, buf, bufsize,
3244 0, RAID_CTLR_LUNID, TYPE_CMD);
3248 c->Request.CDB[2] = bmic_device_index & 0xff;
3249 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;
3251 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3252 PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
3256 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3257 hpsa_scsi_interpret_error(h, c);
3265 static int hpsa_bmic_id_controller(struct ctlr_info *h,
3266 struct bmic_identify_controller *buf, size_t bufsize)
3269 struct CommandList *c;
3270 struct ErrorInfo *ei;
3274 rc = fill_cmd(c, BMIC_IDENTIFY_CONTROLLER, h, buf, bufsize,
3275 0, RAID_CTLR_LUNID, TYPE_CMD);
3279 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3280 PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
3284 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3285 hpsa_scsi_interpret_error(h, c);
3293 static int hpsa_bmic_id_physical_device(struct ctlr_info *h,
3294 unsigned char scsi3addr[], u16 bmic_device_index,
3295 struct bmic_identify_physical_device *buf, size_t bufsize)
3298 struct CommandList *c;
3299 struct ErrorInfo *ei;
3302 rc = fill_cmd(c, BMIC_IDENTIFY_PHYSICAL_DEVICE, h, buf, bufsize,
3303 0, RAID_CTLR_LUNID, TYPE_CMD);
3307 c->Request.CDB[2] = bmic_device_index & 0xff;
3308 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;
3310 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE,
3313 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3314 hpsa_scsi_interpret_error(h, c);
3324 * get enclosure information
3325 * struct ReportExtendedLUNdata *rlep - Used for BMIC drive number
3326 * struct hpsa_scsi_dev_t *encl_dev - device entry for enclosure
3327 * Uses id_physical_device to determine the box_index.
3329 static void hpsa_get_enclosure_info(struct ctlr_info *h,
3330 unsigned char *scsi3addr,
3331 struct ReportExtendedLUNdata *rlep, int rle_index,
3332 struct hpsa_scsi_dev_t *encl_dev)
3335 struct CommandList *c = NULL;
3336 struct ErrorInfo *ei = NULL;
3337 struct bmic_sense_storage_box_params *bssbp = NULL;
3338 struct bmic_identify_physical_device *id_phys = NULL;
3339 struct ext_report_lun_entry *rle = &rlep->LUN[rle_index];
3340 u16 bmic_device_index = 0;
3342 bmic_device_index = GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]);
3344 if (bmic_device_index == 0xFF00 || MASKED_DEVICE(&rle->lunid[0])) {
3349 bssbp = kzalloc(sizeof(*bssbp), GFP_KERNEL);
3353 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
3357 rc = hpsa_bmic_id_physical_device(h, scsi3addr, bmic_device_index,
3358 id_phys, sizeof(*id_phys));
3360 dev_warn(&h->pdev->dev, "%s: id_phys failed %d bdi[0x%x]\n",
3361 __func__, encl_dev->external, bmic_device_index);
3367 rc = fill_cmd(c, BMIC_SENSE_STORAGE_BOX_PARAMS, h, bssbp,
3368 sizeof(*bssbp), 0, RAID_CTLR_LUNID, TYPE_CMD);
3373 if (id_phys->phys_connector[1] == 'E')
3374 c->Request.CDB[5] = id_phys->box_index;
3376 c->Request.CDB[5] = 0;
3378 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE,
3384 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3389 encl_dev->box[id_phys->active_path_number] = bssbp->phys_box_on_port;
3390 memcpy(&encl_dev->phys_connector[id_phys->active_path_number],
3391 bssbp->phys_connector, sizeof(bssbp->phys_connector));
3402 hpsa_show_dev_msg(KERN_INFO, h, encl_dev,
3403 "Error, could not get enclosure information\n");
3406 static u64 hpsa_get_sas_address_from_report_physical(struct ctlr_info *h,
3407 unsigned char *scsi3addr)
3409 struct ReportExtendedLUNdata *physdev;
3414 physdev = kzalloc(sizeof(*physdev), GFP_KERNEL);
3418 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
3419 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
3423 nphysicals = get_unaligned_be32(physdev->LUNListLength) / 24;
3425 for (i = 0; i < nphysicals; i++)
3426 if (!memcmp(&physdev->LUN[i].lunid[0], scsi3addr, 8)) {
3427 sa = get_unaligned_be64(&physdev->LUN[i].wwid[0]);
3436 static void hpsa_get_sas_address(struct ctlr_info *h, unsigned char *scsi3addr,
3437 struct hpsa_scsi_dev_t *dev)
3442 if (is_hba_lunid(scsi3addr)) {
3443 struct bmic_sense_subsystem_info *ssi;
3445 ssi = kzalloc(sizeof(*ssi), GFP_KERNEL);
3447 dev_warn(&h->pdev->dev,
3448 "%s: out of memory\n", __func__);
3452 rc = hpsa_bmic_sense_subsystem_information(h,
3453 scsi3addr, 0, ssi, sizeof(*ssi));
3455 sa = get_unaligned_be64(ssi->primary_world_wide_id);
3456 h->sas_address = sa;
3461 sa = hpsa_get_sas_address_from_report_physical(h, scsi3addr);
3463 dev->sas_address = sa;
3466 /* Get a device id from inquiry page 0x83 */
3467 static bool hpsa_vpd_page_supported(struct ctlr_info *h,
3468 unsigned char scsi3addr[], u8 page)
3473 unsigned char *buf, bufsize;
3475 buf = kzalloc(256, GFP_KERNEL);
3479 /* Get the size of the page list first */
3480 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3481 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3482 buf, HPSA_VPD_HEADER_SZ);
3484 goto exit_unsupported;
3486 if ((pages + HPSA_VPD_HEADER_SZ) <= 255)
3487 bufsize = pages + HPSA_VPD_HEADER_SZ;
3491 /* Get the whole VPD page list */
3492 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3493 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3496 goto exit_unsupported;
3499 for (i = 1; i <= pages; i++)
3500 if (buf[3 + i] == page)
3501 goto exit_supported;
3510 static void hpsa_get_ioaccel_status(struct ctlr_info *h,
3511 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
3517 this_device->offload_config = 0;
3518 this_device->offload_enabled = 0;
3519 this_device->offload_to_be_enabled = 0;
3521 buf = kzalloc(64, GFP_KERNEL);
3524 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_IOACCEL_STATUS))
3526 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3527 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, buf, 64);
3531 #define IOACCEL_STATUS_BYTE 4
3532 #define OFFLOAD_CONFIGURED_BIT 0x01
3533 #define OFFLOAD_ENABLED_BIT 0x02
3534 ioaccel_status = buf[IOACCEL_STATUS_BYTE];
3535 this_device->offload_config =
3536 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT);
3537 if (this_device->offload_config) {
3538 this_device->offload_enabled =
3539 !!(ioaccel_status & OFFLOAD_ENABLED_BIT);
3540 if (hpsa_get_raid_map(h, scsi3addr, this_device))
3541 this_device->offload_enabled = 0;
3543 this_device->offload_to_be_enabled = this_device->offload_enabled;
3549 /* Get the device id from inquiry page 0x83 */
3550 static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr,
3551 unsigned char *device_id, int index, int buflen)
3556 /* Does controller have VPD for device id? */
3557 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_DEVICE_ID))
3558 return 1; /* not supported */
3560 buf = kzalloc(64, GFP_KERNEL);
3564 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE |
3565 HPSA_VPD_LV_DEVICE_ID, buf, 64);
3569 memcpy(device_id, &buf[8], buflen);
3574 return rc; /*0 - got id, otherwise, didn't */
3577 static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
3578 void *buf, int bufsize,
3579 int extended_response)
3582 struct CommandList *c;
3583 unsigned char scsi3addr[8];
3584 struct ErrorInfo *ei;
3588 /* address the controller */
3589 memset(scsi3addr, 0, sizeof(scsi3addr));
3590 if (fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h,
3591 buf, bufsize, 0, scsi3addr, TYPE_CMD)) {
3595 if (extended_response)
3596 c->Request.CDB[1] = extended_response;
3597 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3598 PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
3602 if (ei->CommandStatus != 0 &&
3603 ei->CommandStatus != CMD_DATA_UNDERRUN) {
3604 hpsa_scsi_interpret_error(h, c);
3607 struct ReportLUNdata *rld = buf;
3609 if (rld->extended_response_flag != extended_response) {
3610 dev_err(&h->pdev->dev,
3611 "report luns requested format %u, got %u\n",
3613 rld->extended_response_flag);
3622 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
3623 struct ReportExtendedLUNdata *buf, int bufsize)
3625 return hpsa_scsi_do_report_luns(h, 0, buf, bufsize,
3626 HPSA_REPORT_PHYS_EXTENDED);
3629 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,
3630 struct ReportLUNdata *buf, int bufsize)
3632 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0);
3635 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device,
3636 int bus, int target, int lun)
3639 device->target = target;
3643 /* Use VPD inquiry to get details of volume status */
3644 static int hpsa_get_volume_status(struct ctlr_info *h,
3645 unsigned char scsi3addr[])
3652 buf = kzalloc(64, GFP_KERNEL);
3654 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3656 /* Does controller have VPD for logical volume status? */
3657 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_STATUS))
3660 /* Get the size of the VPD return buffer */
3661 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3662 buf, HPSA_VPD_HEADER_SZ);
3667 /* Now get the whole VPD buffer */
3668 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3669 buf, size + HPSA_VPD_HEADER_SZ);
3672 status = buf[4]; /* status byte */
3678 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3681 /* Determine offline status of a volume.
3684 * 0xff (offline for unknown reasons)
3685 * # (integer code indicating one of several NOT READY states
3686 * describing why a volume is to be kept offline)
3688 static int hpsa_volume_offline(struct ctlr_info *h,
3689 unsigned char scsi3addr[])
3691 struct CommandList *c;
3692 unsigned char *sense;
3693 u8 sense_key, asc, ascq;
3698 #define ASC_LUN_NOT_READY 0x04
3699 #define ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS 0x04
3700 #define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02
3704 (void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD);
3705 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
3711 sense = c->err_info->SenseInfo;
3712 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
3713 sense_len = sizeof(c->err_info->SenseInfo);
3715 sense_len = c->err_info->SenseLen;
3716 decode_sense_data(sense, sense_len, &sense_key, &asc, &ascq);
3717 cmd_status = c->err_info->CommandStatus;
3718 scsi_status = c->err_info->ScsiStatus;
3720 /* Is the volume 'not ready'? */
3721 if (cmd_status != CMD_TARGET_STATUS ||
3722 scsi_status != SAM_STAT_CHECK_CONDITION ||
3723 sense_key != NOT_READY ||
3724 asc != ASC_LUN_NOT_READY) {
3728 /* Determine the reason for not ready state */
3729 ldstat = hpsa_get_volume_status(h, scsi3addr);
3731 /* Keep volume offline in certain cases: */
3733 case HPSA_LV_UNDERGOING_ERASE:
3734 case HPSA_LV_NOT_AVAILABLE:
3735 case HPSA_LV_UNDERGOING_RPI:
3736 case HPSA_LV_PENDING_RPI:
3737 case HPSA_LV_ENCRYPTED_NO_KEY:
3738 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
3739 case HPSA_LV_UNDERGOING_ENCRYPTION:
3740 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
3741 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
3743 case HPSA_VPD_LV_STATUS_UNSUPPORTED:
3744 /* If VPD status page isn't available,
3745 * use ASC/ASCQ to determine state
3747 if ((ascq == ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS) ||
3748 (ascq == ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ))
3758 * Find out if a logical device supports aborts by simply trying one.
3759 * Smart Array may claim not to support aborts on logical drives, but
3760 * if a MSA2000 * is connected, the drives on that will be presented
3761 * by the Smart Array as logical drives, and aborts may be sent to
3762 * those devices successfully. So the simplest way to find out is
3763 * to simply try an abort and see how the device responds.
3765 static int hpsa_device_supports_aborts(struct ctlr_info *h,
3766 unsigned char *scsi3addr)
3768 struct CommandList *c;
3769 struct ErrorInfo *ei;
3772 u64 tag = (u64) -1; /* bogus tag */
3774 /* Assume that physical devices support aborts */
3775 if (!is_logical_dev_addr_mode(scsi3addr))
3780 (void) fill_cmd(c, HPSA_ABORT_MSG, h, &tag, 0, 0, scsi3addr, TYPE_MSG);
3781 (void) hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
3783 /* no unmap needed here because no data xfer. */
3785 switch (ei->CommandStatus) {
3789 case CMD_UNABORTABLE:
3790 case CMD_ABORT_FAILED:
3793 case CMD_TMF_STATUS:
3794 rc = hpsa_evaluate_tmf_status(h, c);
3804 static int hpsa_update_device_info(struct ctlr_info *h,
3805 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device,
3806 unsigned char *is_OBDR_device)
3809 #define OBDR_SIG_OFFSET 43
3810 #define OBDR_TAPE_SIG "$DR-10"
3811 #define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1)
3812 #define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN)
3814 unsigned char *inq_buff;
3815 unsigned char *obdr_sig;
3818 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
3824 /* Do an inquiry to the device to see what it is. */
3825 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
3826 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
3827 /* Inquiry failed (msg printed already) */
3828 dev_err(&h->pdev->dev,
3829 "hpsa_update_device_info: inquiry failed\n");
3834 scsi_sanitize_inquiry_string(&inq_buff[8], 8);
3835 scsi_sanitize_inquiry_string(&inq_buff[16], 16);
3837 this_device->devtype = (inq_buff[0] & 0x1f);
3838 memcpy(this_device->scsi3addr, scsi3addr, 8);
3839 memcpy(this_device->vendor, &inq_buff[8],
3840 sizeof(this_device->vendor));
3841 memcpy(this_device->model, &inq_buff[16],
3842 sizeof(this_device->model));
3843 memset(this_device->device_id, 0,
3844 sizeof(this_device->device_id));
3845 if (hpsa_get_device_id(h, scsi3addr, this_device->device_id, 8,
3846 sizeof(this_device->device_id)))
3847 dev_err(&h->pdev->dev,
3848 "hpsa%d: %s: can't get device id for host %d:C0:T%d:L%d\t%s\t%.16s\n",
3850 h->scsi_host->host_no,
3851 this_device->target, this_device->lun,
3852 scsi_device_type(this_device->devtype),
3853 this_device->model);
3855 if ((this_device->devtype == TYPE_DISK ||
3856 this_device->devtype == TYPE_ZBC) &&
3857 is_logical_dev_addr_mode(scsi3addr)) {
3860 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level);
3861 if (h->fw_support & MISC_FW_RAID_OFFLOAD_BASIC)
3862 hpsa_get_ioaccel_status(h, scsi3addr, this_device);
3863 volume_offline = hpsa_volume_offline(h, scsi3addr);
3864 if (volume_offline < 0 || volume_offline > 0xff)
3865 volume_offline = HPSA_VPD_LV_STATUS_UNSUPPORTED;
3866 this_device->volume_offline = volume_offline & 0xff;
3868 this_device->raid_level = RAID_UNKNOWN;
3869 this_device->offload_config = 0;
3870 this_device->offload_enabled = 0;
3871 this_device->offload_to_be_enabled = 0;
3872 this_device->hba_ioaccel_enabled = 0;
3873 this_device->volume_offline = 0;
3874 this_device->queue_depth = h->nr_cmds;
3877 if (is_OBDR_device) {
3878 /* See if this is a One-Button-Disaster-Recovery device
3879 * by looking for "$DR-10" at offset 43 in inquiry data.
3881 obdr_sig = &inq_buff[OBDR_SIG_OFFSET];
3882 *is_OBDR_device = (this_device->devtype == TYPE_ROM &&
3883 strncmp(obdr_sig, OBDR_TAPE_SIG,
3884 OBDR_SIG_LEN) == 0);
3894 static void hpsa_update_device_supports_aborts(struct ctlr_info *h,
3895 struct hpsa_scsi_dev_t *dev, u8 *scsi3addr)
3897 unsigned long flags;
3900 * See if this device supports aborts. If we already know
3901 * the device, we already know if it supports aborts, otherwise
3902 * we have to find out if it supports aborts by trying one.
3904 spin_lock_irqsave(&h->devlock, flags);
3905 rc = hpsa_scsi_find_entry(dev, h->dev, h->ndevices, &entry);
3906 if ((rc == DEVICE_SAME || rc == DEVICE_UPDATED) &&
3907 entry >= 0 && entry < h->ndevices) {
3908 dev->supports_aborts = h->dev[entry]->supports_aborts;
3909 spin_unlock_irqrestore(&h->devlock, flags);
3911 spin_unlock_irqrestore(&h->devlock, flags);
3912 dev->supports_aborts =
3913 hpsa_device_supports_aborts(h, scsi3addr);
3914 if (dev->supports_aborts < 0)
3915 dev->supports_aborts = 0;
3920 * Helper function to assign bus, target, lun mapping of devices.
3921 * Logical drive target and lun are assigned at this time, but
3922 * physical device lun and target assignment are deferred (assigned
3923 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
3925 static void figure_bus_target_lun(struct ctlr_info *h,
3926 u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device)
3928 u32 lunid = get_unaligned_le32(lunaddrbytes);
3930 if (!is_logical_dev_addr_mode(lunaddrbytes)) {
3931 /* physical device, target and lun filled in later */
3932 if (is_hba_lunid(lunaddrbytes))
3933 hpsa_set_bus_target_lun(device,
3934 HPSA_HBA_BUS, 0, lunid & 0x3fff);
3936 /* defer target, lun assignment for physical devices */
3937 hpsa_set_bus_target_lun(device,
3938 HPSA_PHYSICAL_DEVICE_BUS, -1, -1);
3941 /* It's a logical device */
3942 if (device->external) {
3943 hpsa_set_bus_target_lun(device,
3944 HPSA_EXTERNAL_RAID_VOLUME_BUS, (lunid >> 16) & 0x3fff,
3948 hpsa_set_bus_target_lun(device, HPSA_RAID_VOLUME_BUS,
3954 * Get address of physical disk used for an ioaccel2 mode command:
3955 * 1. Extract ioaccel2 handle from the command.
3956 * 2. Find a matching ioaccel2 handle from list of physical disks.
3958 * 1 and set scsi3addr to address of matching physical
3959 * 0 if no matching physical disk was found.
3961 static int hpsa_get_pdisk_of_ioaccel2(struct ctlr_info *h,
3962 struct CommandList *ioaccel2_cmd_to_abort, unsigned char *scsi3addr)
3964 struct io_accel2_cmd *c2 =
3965 &h->ioaccel2_cmd_pool[ioaccel2_cmd_to_abort->cmdindex];
3966 unsigned long flags;
3969 spin_lock_irqsave(&h->devlock, flags);
3970 for (i = 0; i < h->ndevices; i++)
3971 if (h->dev[i]->ioaccel_handle == le32_to_cpu(c2->scsi_nexus)) {
3972 memcpy(scsi3addr, h->dev[i]->scsi3addr,
3973 sizeof(h->dev[i]->scsi3addr));
3974 spin_unlock_irqrestore(&h->devlock, flags);
3977 spin_unlock_irqrestore(&h->devlock, flags);
3981 static int figure_external_status(struct ctlr_info *h, int raid_ctlr_position,
3982 int i, int nphysicals, int nlocal_logicals)
3984 /* In report logicals, local logicals are listed first,
3985 * then any externals.
3987 int logicals_start = nphysicals + (raid_ctlr_position == 0);
3989 if (i == raid_ctlr_position)
3992 if (i < logicals_start)
3995 /* i is in logicals range, but still within local logicals */
3996 if ((i - nphysicals - (raid_ctlr_position == 0)) < nlocal_logicals)
3999 return 1; /* it's an external lun */
4003 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
4004 * logdev. The number of luns in physdev and logdev are returned in
4005 * *nphysicals and *nlogicals, respectively.
4006 * Returns 0 on success, -1 otherwise.
4008 static int hpsa_gather_lun_info(struct ctlr_info *h,
4009 struct ReportExtendedLUNdata *physdev, u32 *nphysicals,
4010 struct ReportLUNdata *logdev, u32 *nlogicals)
4012 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
4013 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
4016 *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 24;
4017 if (*nphysicals > HPSA_MAX_PHYS_LUN) {
4018 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded. %d LUNs ignored.\n",
4019 HPSA_MAX_PHYS_LUN, *nphysicals - HPSA_MAX_PHYS_LUN);
4020 *nphysicals = HPSA_MAX_PHYS_LUN;
4022 if (hpsa_scsi_do_report_log_luns(h, logdev, sizeof(*logdev))) {
4023 dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
4026 *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8;
4027 /* Reject Logicals in excess of our max capability. */
4028 if (*nlogicals > HPSA_MAX_LUN) {
4029 dev_warn(&h->pdev->dev,
4030 "maximum logical LUNs (%d) exceeded. "
4031 "%d LUNs ignored.\n", HPSA_MAX_LUN,
4032 *nlogicals - HPSA_MAX_LUN);
4033 *nlogicals = HPSA_MAX_LUN;
4035 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) {
4036 dev_warn(&h->pdev->dev,
4037 "maximum logical + physical LUNs (%d) exceeded. "
4038 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
4039 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN);
4040 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals;
4045 static u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position,
4046 int i, int nphysicals, int nlogicals,
4047 struct ReportExtendedLUNdata *physdev_list,
4048 struct ReportLUNdata *logdev_list)
4050 /* Helper function, figure out where the LUN ID info is coming from
4051 * given index i, lists of physical and logical devices, where in
4052 * the list the raid controller is supposed to appear (first or last)
4055 int logicals_start = nphysicals + (raid_ctlr_position == 0);
4056 int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0);
4058 if (i == raid_ctlr_position)
4059 return RAID_CTLR_LUNID;
4061 if (i < logicals_start)
4062 return &physdev_list->LUN[i -
4063 (raid_ctlr_position == 0)].lunid[0];
4065 if (i < last_device)
4066 return &logdev_list->LUN[i - nphysicals -
4067 (raid_ctlr_position == 0)][0];
4072 /* get physical drive ioaccel handle and queue depth */
4073 static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h,
4074 struct hpsa_scsi_dev_t *dev,
4075 struct ReportExtendedLUNdata *rlep, int rle_index,
4076 struct bmic_identify_physical_device *id_phys)
4079 struct ext_report_lun_entry *rle;
4082 * external targets don't support BMIC
4084 if (dev->external) {
4085 dev->queue_depth = 7;
4089 rle = &rlep->LUN[rle_index];
4091 dev->ioaccel_handle = rle->ioaccel_handle;
4092 if ((rle->device_flags & 0x08) && dev->ioaccel_handle)
4093 dev->hba_ioaccel_enabled = 1;
4094 memset(id_phys, 0, sizeof(*id_phys));
4095 rc = hpsa_bmic_id_physical_device(h, &rle->lunid[0],
4096 GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]), id_phys,
4099 /* Reserve space for FW operations */
4100 #define DRIVE_CMDS_RESERVED_FOR_FW 2
4101 #define DRIVE_QUEUE_DEPTH 7
4103 le16_to_cpu(id_phys->current_queue_depth_limit) -
4104 DRIVE_CMDS_RESERVED_FOR_FW;
4106 dev->queue_depth = DRIVE_QUEUE_DEPTH; /* conservative */
4109 static void hpsa_get_path_info(struct hpsa_scsi_dev_t *this_device,
4110 struct ReportExtendedLUNdata *rlep, int rle_index,
4111 struct bmic_identify_physical_device *id_phys)
4113 struct ext_report_lun_entry *rle = &rlep->LUN[rle_index];
4115 if ((rle->device_flags & 0x08) && this_device->ioaccel_handle)
4116 this_device->hba_ioaccel_enabled = 1;
4118 memcpy(&this_device->active_path_index,
4119 &id_phys->active_path_number,
4120 sizeof(this_device->active_path_index));
4121 memcpy(&this_device->path_map,
4122 &id_phys->redundant_path_present_map,
4123 sizeof(this_device->path_map));
4124 memcpy(&this_device->box,
4125 &id_phys->alternate_paths_phys_box_on_port,
4126 sizeof(this_device->box));
4127 memcpy(&this_device->phys_connector,
4128 &id_phys->alternate_paths_phys_connector,
4129 sizeof(this_device->phys_connector));
4130 memcpy(&this_device->bay,
4131 &id_phys->phys_bay_in_box,
4132 sizeof(this_device->bay));
4135 /* get number of local logical disks. */
4136 static int hpsa_set_local_logical_count(struct ctlr_info *h,
4137 struct bmic_identify_controller *id_ctlr,
4143 dev_warn(&h->pdev->dev, "%s: id_ctlr buffer is NULL.\n",
4147 memset(id_ctlr, 0, sizeof(*id_ctlr));
4148 rc = hpsa_bmic_id_controller(h, id_ctlr, sizeof(*id_ctlr));
4150 if (id_ctlr->configured_logical_drive_count < 256)
4151 *nlocals = id_ctlr->configured_logical_drive_count;
4153 *nlocals = le16_to_cpu(
4154 id_ctlr->extended_logical_unit_count);
4160 static bool hpsa_is_disk_spare(struct ctlr_info *h, u8 *lunaddrbytes)
4162 struct bmic_identify_physical_device *id_phys;
4163 bool is_spare = false;
4166 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
4170 rc = hpsa_bmic_id_physical_device(h,
4172 GET_BMIC_DRIVE_NUMBER(lunaddrbytes),
4173 id_phys, sizeof(*id_phys));
4175 is_spare = (id_phys->more_flags >> 6) & 0x01;
4181 #define RPL_DEV_FLAG_NON_DISK 0x1
4182 #define RPL_DEV_FLAG_UNCONFIG_DISK_REPORTING_SUPPORTED 0x2
4183 #define RPL_DEV_FLAG_UNCONFIG_DISK 0x4
4185 #define BMIC_DEVICE_TYPE_ENCLOSURE 6
4187 static bool hpsa_skip_device(struct ctlr_info *h, u8 *lunaddrbytes,
4188 struct ext_report_lun_entry *rle)
4193 if (!MASKED_DEVICE(lunaddrbytes))
4196 device_flags = rle->device_flags;
4197 device_type = rle->device_type;
4199 if (device_flags & RPL_DEV_FLAG_NON_DISK) {
4200 if (device_type == BMIC_DEVICE_TYPE_ENCLOSURE)
4205 if (!(device_flags & RPL_DEV_FLAG_UNCONFIG_DISK_REPORTING_SUPPORTED))
4208 if (device_flags & RPL_DEV_FLAG_UNCONFIG_DISK)
4212 * Spares may be spun down, we do not want to
4213 * do an Inquiry to a RAID set spare drive as
4214 * that would have them spun up, that is a
4215 * performance hit because I/O to the RAID device
4216 * stops while the spin up occurs which can take
4219 if (hpsa_is_disk_spare(h, lunaddrbytes))
4225 static void hpsa_update_scsi_devices(struct ctlr_info *h)
4227 /* the idea here is we could get notified
4228 * that some devices have changed, so we do a report
4229 * physical luns and report logical luns cmd, and adjust
4230 * our list of devices accordingly.
4232 * The scsi3addr's of devices won't change so long as the
4233 * adapter is not reset. That means we can rescan and
4234 * tell which devices we already know about, vs. new
4235 * devices, vs. disappearing devices.
4237 struct ReportExtendedLUNdata *physdev_list = NULL;
4238 struct ReportLUNdata *logdev_list = NULL;
4239 struct bmic_identify_physical_device *id_phys = NULL;
4240 struct bmic_identify_controller *id_ctlr = NULL;
4243 u32 nlocal_logicals = 0;
4244 u32 ndev_allocated = 0;
4245 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
4247 int i, n_ext_target_devs, ndevs_to_allocate;
4248 int raid_ctlr_position;
4249 bool physical_device;
4250 DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS);
4252 currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_DEVICES, GFP_KERNEL);
4253 physdev_list = kzalloc(sizeof(*physdev_list), GFP_KERNEL);
4254 logdev_list = kzalloc(sizeof(*logdev_list), GFP_KERNEL);
4255 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL);
4256 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
4257 id_ctlr = kzalloc(sizeof(*id_ctlr), GFP_KERNEL);
4259 if (!currentsd || !physdev_list || !logdev_list ||
4260 !tmpdevice || !id_phys || !id_ctlr) {
4261 dev_err(&h->pdev->dev, "out of memory\n");
4264 memset(lunzerobits, 0, sizeof(lunzerobits));
4266 h->drv_req_rescan = 0; /* cancel scheduled rescan - we're doing it. */
4268 if (hpsa_gather_lun_info(h, physdev_list, &nphysicals,
4269 logdev_list, &nlogicals)) {
4270 h->drv_req_rescan = 1;
4274 /* Set number of local logicals (non PTRAID) */
4275 if (hpsa_set_local_logical_count(h, id_ctlr, &nlocal_logicals)) {
4276 dev_warn(&h->pdev->dev,
4277 "%s: Can't determine number of local logical devices.\n",
4281 /* We might see up to the maximum number of logical and physical disks
4282 * plus external target devices, and a device for the local RAID
4285 ndevs_to_allocate = nphysicals + nlogicals + MAX_EXT_TARGETS + 1;
4287 /* Allocate the per device structures */
4288 for (i = 0; i < ndevs_to_allocate; i++) {
4289 if (i >= HPSA_MAX_DEVICES) {
4290 dev_warn(&h->pdev->dev, "maximum devices (%d) exceeded."
4291 " %d devices ignored.\n", HPSA_MAX_DEVICES,
4292 ndevs_to_allocate - HPSA_MAX_DEVICES);
4296 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL);
4297 if (!currentsd[i]) {
4298 dev_warn(&h->pdev->dev, "out of memory at %s:%d\n",
4299 __FILE__, __LINE__);
4300 h->drv_req_rescan = 1;
4306 if (is_scsi_rev_5(h))
4307 raid_ctlr_position = 0;
4309 raid_ctlr_position = nphysicals + nlogicals;
4311 /* adjust our table of devices */
4312 n_ext_target_devs = 0;
4313 for (i = 0; i < nphysicals + nlogicals + 1; i++) {
4314 u8 *lunaddrbytes, is_OBDR = 0;
4316 int phys_dev_index = i - (raid_ctlr_position == 0);
4317 bool skip_device = false;
4319 physical_device = i < nphysicals + (raid_ctlr_position == 0);
4321 /* Figure out where the LUN ID info is coming from */
4322 lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position,
4323 i, nphysicals, nlogicals, physdev_list, logdev_list);
4325 /* Determine if this is a lun from an external target array */
4326 tmpdevice->external =
4327 figure_external_status(h, raid_ctlr_position, i,
4328 nphysicals, nlocal_logicals);
4331 * Skip over some devices such as a spare.
4333 if (!tmpdevice->external && physical_device) {
4334 skip_device = hpsa_skip_device(h, lunaddrbytes,
4335 &physdev_list->LUN[phys_dev_index]);
4340 /* Get device type, vendor, model, device id */
4341 rc = hpsa_update_device_info(h, lunaddrbytes, tmpdevice,
4343 if (rc == -ENOMEM) {
4344 dev_warn(&h->pdev->dev,
4345 "Out of memory, rescan deferred.\n");
4346 h->drv_req_rescan = 1;
4350 dev_warn(&h->pdev->dev,
4351 "Inquiry failed, skipping device.\n");
4355 figure_bus_target_lun(h, lunaddrbytes, tmpdevice);
4356 hpsa_update_device_supports_aborts(h, tmpdevice, lunaddrbytes);
4357 this_device = currentsd[ncurrent];
4359 /* Turn on discovery_polling if there are ext target devices.
4360 * Event-based change notification is unreliable for those.
4362 if (!h->discovery_polling) {
4363 if (tmpdevice->external) {
4364 h->discovery_polling = 1;
4365 dev_info(&h->pdev->dev,
4366 "External target, activate discovery polling.\n");
4371 *this_device = *tmpdevice;
4372 this_device->physical_device = physical_device;
4375 * Expose all devices except for physical devices that
4378 if (MASKED_DEVICE(lunaddrbytes) && this_device->physical_device)
4379 this_device->expose_device = 0;
4381 this_device->expose_device = 1;
4385 * Get the SAS address for physical devices that are exposed.
4387 if (this_device->physical_device && this_device->expose_device)
4388 hpsa_get_sas_address(h, lunaddrbytes, this_device);
4390 switch (this_device->devtype) {
4392 /* We don't *really* support actual CD-ROM devices,
4393 * just "One Button Disaster Recovery" tape drive
4394 * which temporarily pretends to be a CD-ROM drive.
4395 * So we check that the device is really an OBDR tape
4396 * device by checking for "$DR-10" in bytes 43-48 of
4404 if (this_device->physical_device) {
4405 /* The disk is in HBA mode. */
4406 /* Never use RAID mapper in HBA mode. */
4407 this_device->offload_enabled = 0;
4408 hpsa_get_ioaccel_drive_info(h, this_device,
4409 physdev_list, phys_dev_index, id_phys);
4410 hpsa_get_path_info(this_device,
4411 physdev_list, phys_dev_index, id_phys);
4416 case TYPE_MEDIUM_CHANGER:
4419 case TYPE_ENCLOSURE:
4420 if (!this_device->external)
4421 hpsa_get_enclosure_info(h, lunaddrbytes,
4422 physdev_list, phys_dev_index,
4427 /* Only present the Smartarray HBA as a RAID controller.
4428 * If it's a RAID controller other than the HBA itself
4429 * (an external RAID controller, MSA500 or similar)
4432 if (!is_hba_lunid(lunaddrbytes))
4439 if (ncurrent >= HPSA_MAX_DEVICES)
4443 if (h->sas_host == NULL) {
4446 rc = hpsa_add_sas_host(h);
4448 dev_warn(&h->pdev->dev,
4449 "Could not add sas host %d\n", rc);
4454 adjust_hpsa_scsi_table(h, currentsd, ncurrent);
4457 for (i = 0; i < ndev_allocated; i++)
4458 kfree(currentsd[i]);
4460 kfree(physdev_list);
4466 static void hpsa_set_sg_descriptor(struct SGDescriptor *desc,
4467 struct scatterlist *sg)
4469 u64 addr64 = (u64) sg_dma_address(sg);
4470 unsigned int len = sg_dma_len(sg);
4472 desc->Addr = cpu_to_le64(addr64);
4473 desc->Len = cpu_to_le32(len);
4478 * hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
4479 * dma mapping and fills in the scatter gather entries of the
4482 static int hpsa_scatter_gather(struct ctlr_info *h,
4483 struct CommandList *cp,
4484 struct scsi_cmnd *cmd)
4486 struct scatterlist *sg;
4487 int use_sg, i, sg_limit, chained, last_sg;
4488 struct SGDescriptor *curr_sg;
4490 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
4492 use_sg = scsi_dma_map(cmd);
4497 goto sglist_finished;
4500 * If the number of entries is greater than the max for a single list,
4501 * then we have a chained list; we will set up all but one entry in the
4502 * first list (the last entry is saved for link information);
4503 * otherwise, we don't have a chained list and we'll set up at each of
4504 * the entries in the one list.
4507 chained = use_sg > h->max_cmd_sg_entries;
4508 sg_limit = chained ? h->max_cmd_sg_entries - 1 : use_sg;
4509 last_sg = scsi_sg_count(cmd) - 1;
4510 scsi_for_each_sg(cmd, sg, sg_limit, i) {
4511 hpsa_set_sg_descriptor(curr_sg, sg);
4517 * Continue with the chained list. Set curr_sg to the chained
4518 * list. Modify the limit to the total count less the entries
4519 * we've already set up. Resume the scan at the list entry
4520 * where the previous loop left off.
4522 curr_sg = h->cmd_sg_list[cp->cmdindex];
4523 sg_limit = use_sg - sg_limit;
4524 for_each_sg(sg, sg, sg_limit, i) {
4525 hpsa_set_sg_descriptor(curr_sg, sg);
4530 /* Back the pointer up to the last entry and mark it as "last". */
4531 (curr_sg - 1)->Ext = cpu_to_le32(HPSA_SG_LAST);
4533 if (use_sg + chained > h->maxSG)
4534 h->maxSG = use_sg + chained;
4537 cp->Header.SGList = h->max_cmd_sg_entries;
4538 cp->Header.SGTotal = cpu_to_le16(use_sg + 1);
4539 if (hpsa_map_sg_chain_block(h, cp)) {
4540 scsi_dma_unmap(cmd);
4548 cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */
4549 cp->Header.SGTotal = cpu_to_le16(use_sg); /* total sgs in cmd list */
4553 #define IO_ACCEL_INELIGIBLE (1)
4554 static int fixup_ioaccel_cdb(u8 *cdb, int *cdb_len)
4560 /* Perform some CDB fixups if needed using 10 byte reads/writes only */
4567 if (*cdb_len == 6) {
4568 block = (((cdb[1] & 0x1F) << 16) |
4575 BUG_ON(*cdb_len != 12);
4576 block = get_unaligned_be32(&cdb[2]);
4577 block_cnt = get_unaligned_be32(&cdb[6]);
4579 if (block_cnt > 0xffff)
4580 return IO_ACCEL_INELIGIBLE;
4582 cdb[0] = is_write ? WRITE_10 : READ_10;
4584 cdb[2] = (u8) (block >> 24);
4585 cdb[3] = (u8) (block >> 16);
4586 cdb[4] = (u8) (block >> 8);
4587 cdb[5] = (u8) (block);
4589 cdb[7] = (u8) (block_cnt >> 8);
4590 cdb[8] = (u8) (block_cnt);
4598 static int hpsa_scsi_ioaccel1_queue_command(struct ctlr_info *h,
4599 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4600 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4602 struct scsi_cmnd *cmd = c->scsi_cmd;
4603 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
4605 unsigned int total_len = 0;
4606 struct scatterlist *sg;
4609 struct SGDescriptor *curr_sg;
4610 u32 control = IOACCEL1_CONTROL_SIMPLEQUEUE;
4612 /* TODO: implement chaining support */
4613 if (scsi_sg_count(cmd) > h->ioaccel_maxsg) {
4614 atomic_dec(&phys_disk->ioaccel_cmds_out);
4615 return IO_ACCEL_INELIGIBLE;
4618 BUG_ON(cmd->cmd_len > IOACCEL1_IOFLAGS_CDBLEN_MAX);
4620 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4621 atomic_dec(&phys_disk->ioaccel_cmds_out);
4622 return IO_ACCEL_INELIGIBLE;
4625 c->cmd_type = CMD_IOACCEL1;
4627 /* Adjust the DMA address to point to the accelerated command buffer */
4628 c->busaddr = (u32) h->ioaccel_cmd_pool_dhandle +
4629 (c->cmdindex * sizeof(*cp));
4630 BUG_ON(c->busaddr & 0x0000007F);
4632 use_sg = scsi_dma_map(cmd);
4634 atomic_dec(&phys_disk->ioaccel_cmds_out);
4640 scsi_for_each_sg(cmd, sg, use_sg, i) {
4641 addr64 = (u64) sg_dma_address(sg);
4642 len = sg_dma_len(sg);
4644 curr_sg->Addr = cpu_to_le64(addr64);
4645 curr_sg->Len = cpu_to_le32(len);
4646 curr_sg->Ext = cpu_to_le32(0);
4649 (--curr_sg)->Ext = cpu_to_le32(HPSA_SG_LAST);
4651 switch (cmd->sc_data_direction) {
4653 control |= IOACCEL1_CONTROL_DATA_OUT;
4655 case DMA_FROM_DEVICE:
4656 control |= IOACCEL1_CONTROL_DATA_IN;
4659 control |= IOACCEL1_CONTROL_NODATAXFER;
4662 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4663 cmd->sc_data_direction);
4668 control |= IOACCEL1_CONTROL_NODATAXFER;
4671 c->Header.SGList = use_sg;
4672 /* Fill out the command structure to submit */
4673 cp->dev_handle = cpu_to_le16(ioaccel_handle & 0xFFFF);
4674 cp->transfer_len = cpu_to_le32(total_len);
4675 cp->io_flags = cpu_to_le16(IOACCEL1_IOFLAGS_IO_REQ |
4676 (cdb_len & IOACCEL1_IOFLAGS_CDBLEN_MASK));
4677 cp->control = cpu_to_le32(control);
4678 memcpy(cp->CDB, cdb, cdb_len);
4679 memcpy(cp->CISS_LUN, scsi3addr, 8);
4680 /* Tag was already set at init time. */
4681 enqueue_cmd_and_start_io(h, c);
4686 * Queue a command directly to a device behind the controller using the
4687 * I/O accelerator path.
4689 static int hpsa_scsi_ioaccel_direct_map(struct ctlr_info *h,
4690 struct CommandList *c)
4692 struct scsi_cmnd *cmd = c->scsi_cmd;
4693 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4700 return hpsa_scsi_ioaccel_queue_command(h, c, dev->ioaccel_handle,
4701 cmd->cmnd, cmd->cmd_len, dev->scsi3addr, dev);
4705 * Set encryption parameters for the ioaccel2 request
4707 static void set_encrypt_ioaccel2(struct ctlr_info *h,
4708 struct CommandList *c, struct io_accel2_cmd *cp)
4710 struct scsi_cmnd *cmd = c->scsi_cmd;
4711 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4712 struct raid_map_data *map = &dev->raid_map;
4715 /* Are we doing encryption on this device */
4716 if (!(le16_to_cpu(map->flags) & RAID_MAP_FLAG_ENCRYPT_ON))
4718 /* Set the data encryption key index. */
4719 cp->dekindex = map->dekindex;
4721 /* Set the encryption enable flag, encoded into direction field. */
4722 cp->direction |= IOACCEL2_DIRECTION_ENCRYPT_MASK;
4724 /* Set encryption tweak values based on logical block address
4725 * If block size is 512, tweak value is LBA.
4726 * For other block sizes, tweak is (LBA * block size)/ 512)
4728 switch (cmd->cmnd[0]) {
4729 /* Required? 6-byte cdbs eliminated by fixup_ioaccel_cdb */
4732 first_block = (((cmd->cmnd[1] & 0x1F) << 16) |
4733 (cmd->cmnd[2] << 8) |
4738 /* Required? 12-byte cdbs eliminated by fixup_ioaccel_cdb */
4741 first_block = get_unaligned_be32(&cmd->cmnd[2]);
4745 first_block = get_unaligned_be64(&cmd->cmnd[2]);
4748 dev_err(&h->pdev->dev,
4749 "ERROR: %s: size (0x%x) not supported for encryption\n",
4750 __func__, cmd->cmnd[0]);
4755 if (le32_to_cpu(map->volume_blk_size) != 512)
4756 first_block = first_block *
4757 le32_to_cpu(map->volume_blk_size)/512;
4759 cp->tweak_lower = cpu_to_le32(first_block);
4760 cp->tweak_upper = cpu_to_le32(first_block >> 32);
4763 static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h,
4764 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4765 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4767 struct scsi_cmnd *cmd = c->scsi_cmd;
4768 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
4769 struct ioaccel2_sg_element *curr_sg;
4771 struct scatterlist *sg;
4779 if (!cmd->device->hostdata)
4782 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
4784 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4785 atomic_dec(&phys_disk->ioaccel_cmds_out);
4786 return IO_ACCEL_INELIGIBLE;
4789 c->cmd_type = CMD_IOACCEL2;
4790 /* Adjust the DMA address to point to the accelerated command buffer */
4791 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
4792 (c->cmdindex * sizeof(*cp));
4793 BUG_ON(c->busaddr & 0x0000007F);
4795 memset(cp, 0, sizeof(*cp));
4796 cp->IU_type = IOACCEL2_IU_TYPE;
4798 use_sg = scsi_dma_map(cmd);
4800 atomic_dec(&phys_disk->ioaccel_cmds_out);
4806 if (use_sg > h->ioaccel_maxsg) {
4807 addr64 = le64_to_cpu(
4808 h->ioaccel2_cmd_sg_list[c->cmdindex]->address);
4809 curr_sg->address = cpu_to_le64(addr64);
4810 curr_sg->length = 0;
4811 curr_sg->reserved[0] = 0;
4812 curr_sg->reserved[1] = 0;
4813 curr_sg->reserved[2] = 0;
4814 curr_sg->chain_indicator = 0x80;
4816 curr_sg = h->ioaccel2_cmd_sg_list[c->cmdindex];
4818 scsi_for_each_sg(cmd, sg, use_sg, i) {
4819 addr64 = (u64) sg_dma_address(sg);
4820 len = sg_dma_len(sg);
4822 curr_sg->address = cpu_to_le64(addr64);
4823 curr_sg->length = cpu_to_le32(len);
4824 curr_sg->reserved[0] = 0;
4825 curr_sg->reserved[1] = 0;
4826 curr_sg->reserved[2] = 0;
4827 curr_sg->chain_indicator = 0;
4831 switch (cmd->sc_data_direction) {
4833 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4834 cp->direction |= IOACCEL2_DIR_DATA_OUT;
4836 case DMA_FROM_DEVICE:
4837 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4838 cp->direction |= IOACCEL2_DIR_DATA_IN;
4841 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4842 cp->direction |= IOACCEL2_DIR_NO_DATA;
4845 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4846 cmd->sc_data_direction);
4851 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4852 cp->direction |= IOACCEL2_DIR_NO_DATA;
4855 /* Set encryption parameters, if necessary */
4856 set_encrypt_ioaccel2(h, c, cp);
4858 cp->scsi_nexus = cpu_to_le32(ioaccel_handle);
4859 cp->Tag = cpu_to_le32(c->cmdindex << DIRECT_LOOKUP_SHIFT);
4860 memcpy(cp->cdb, cdb, sizeof(cp->cdb));
4862 cp->data_len = cpu_to_le32(total_len);
4863 cp->err_ptr = cpu_to_le64(c->busaddr +
4864 offsetof(struct io_accel2_cmd, error_data));
4865 cp->err_len = cpu_to_le32(sizeof(cp->error_data));
4867 /* fill in sg elements */
4868 if (use_sg > h->ioaccel_maxsg) {
4870 cp->sg[0].length = cpu_to_le32(use_sg * sizeof(cp->sg[0]));
4871 if (hpsa_map_ioaccel2_sg_chain_block(h, cp, c)) {
4872 atomic_dec(&phys_disk->ioaccel_cmds_out);
4873 scsi_dma_unmap(cmd);
4877 cp->sg_count = (u8) use_sg;
4879 enqueue_cmd_and_start_io(h, c);
4884 * Queue a command to the correct I/O accelerator path.
4886 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
4887 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4888 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4890 if (!c->scsi_cmd->device)
4893 if (!c->scsi_cmd->device->hostdata)
4896 /* Try to honor the device's queue depth */
4897 if (atomic_inc_return(&phys_disk->ioaccel_cmds_out) >
4898 phys_disk->queue_depth) {
4899 atomic_dec(&phys_disk->ioaccel_cmds_out);
4900 return IO_ACCEL_INELIGIBLE;
4902 if (h->transMethod & CFGTBL_Trans_io_accel1)
4903 return hpsa_scsi_ioaccel1_queue_command(h, c, ioaccel_handle,
4904 cdb, cdb_len, scsi3addr,
4907 return hpsa_scsi_ioaccel2_queue_command(h, c, ioaccel_handle,
4908 cdb, cdb_len, scsi3addr,
4912 static void raid_map_helper(struct raid_map_data *map,
4913 int offload_to_mirror, u32 *map_index, u32 *current_group)
4915 if (offload_to_mirror == 0) {
4916 /* use physical disk in the first mirrored group. */
4917 *map_index %= le16_to_cpu(map->data_disks_per_row);
4921 /* determine mirror group that *map_index indicates */
4922 *current_group = *map_index /
4923 le16_to_cpu(map->data_disks_per_row);
4924 if (offload_to_mirror == *current_group)
4926 if (*current_group < le16_to_cpu(map->layout_map_count) - 1) {
4927 /* select map index from next group */
4928 *map_index += le16_to_cpu(map->data_disks_per_row);
4931 /* select map index from first group */
4932 *map_index %= le16_to_cpu(map->data_disks_per_row);
4935 } while (offload_to_mirror != *current_group);
4939 * Attempt to perform offload RAID mapping for a logical volume I/O.
4941 static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h,
4942 struct CommandList *c)
4944 struct scsi_cmnd *cmd = c->scsi_cmd;
4945 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4946 struct raid_map_data *map = &dev->raid_map;
4947 struct raid_map_disk_data *dd = &map->data[0];
4950 u64 first_block, last_block;
4953 u64 first_row, last_row;
4954 u32 first_row_offset, last_row_offset;
4955 u32 first_column, last_column;
4956 u64 r0_first_row, r0_last_row;
4957 u32 r5or6_blocks_per_row;
4958 u64 r5or6_first_row, r5or6_last_row;
4959 u32 r5or6_first_row_offset, r5or6_last_row_offset;
4960 u32 r5or6_first_column, r5or6_last_column;
4961 u32 total_disks_per_row;
4963 u32 first_group, last_group, current_group;
4971 #if BITS_PER_LONG == 32
4974 int offload_to_mirror;
4979 /* check for valid opcode, get LBA and block count */
4980 switch (cmd->cmnd[0]) {
4984 first_block = (((cmd->cmnd[1] & 0x1F) << 16) |
4985 (cmd->cmnd[2] << 8) |
4987 block_cnt = cmd->cmnd[4];
4995 (((u64) cmd->cmnd[2]) << 24) |
4996 (((u64) cmd->cmnd[3]) << 16) |
4997 (((u64) cmd->cmnd[4]) << 8) |
5000 (((u32) cmd->cmnd[7]) << 8) |
5007 (((u64) cmd->cmnd[2]) << 24) |
5008 (((u64) cmd->cmnd[3]) << 16) |
5009 (((u64) cmd->cmnd[4]) << 8) |
5012 (((u32) cmd->cmnd[6]) << 24) |
5013 (((u32) cmd->cmnd[7]) << 16) |
5014 (((u32) cmd->cmnd[8]) << 8) |
5021 (((u64) cmd->cmnd[2]) << 56) |
5022 (((u64) cmd->cmnd[3]) << 48) |
5023 (((u64) cmd->cmnd[4]) << 40) |
5024 (((u64) cmd->cmnd[5]) << 32) |
5025 (((u64) cmd->cmnd[6]) << 24) |
5026 (((u64) cmd->cmnd[7]) << 16) |
5027 (((u64) cmd->cmnd[8]) << 8) |
5030 (((u32) cmd->cmnd[10]) << 24) |
5031 (((u32) cmd->cmnd[11]) << 16) |
5032 (((u32) cmd->cmnd[12]) << 8) |
5036 return IO_ACCEL_INELIGIBLE; /* process via normal I/O path */
5038 last_block = first_block + block_cnt - 1;
5040 /* check for write to non-RAID-0 */
5041 if (is_write && dev->raid_level != 0)
5042 return IO_ACCEL_INELIGIBLE;
5044 /* check for invalid block or wraparound */
5045 if (last_block >= le64_to_cpu(map->volume_blk_cnt) ||
5046 last_block < first_block)
5047 return IO_ACCEL_INELIGIBLE;
5049 /* calculate stripe information for the request */
5050 blocks_per_row = le16_to_cpu(map->data_disks_per_row) *
5051 le16_to_cpu(map->strip_size);
5052 strip_size = le16_to_cpu(map->strip_size);
5053 #if BITS_PER_LONG == 32
5054 tmpdiv = first_block;
5055 (void) do_div(tmpdiv, blocks_per_row);
5057 tmpdiv = last_block;
5058 (void) do_div(tmpdiv, blocks_per_row);
5060 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
5061 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
5062 tmpdiv = first_row_offset;
5063 (void) do_div(tmpdiv, strip_size);
5064 first_column = tmpdiv;
5065 tmpdiv = last_row_offset;
5066 (void) do_div(tmpdiv, strip_size);
5067 last_column = tmpdiv;
5069 first_row = first_block / blocks_per_row;
5070 last_row = last_block / blocks_per_row;
5071 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
5072 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
5073 first_column = first_row_offset / strip_size;
5074 last_column = last_row_offset / strip_size;
5077 /* if this isn't a single row/column then give to the controller */
5078 if ((first_row != last_row) || (first_column != last_column))
5079 return IO_ACCEL_INELIGIBLE;
5081 /* proceeding with driver mapping */
5082 total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
5083 le16_to_cpu(map->metadata_disks_per_row);
5084 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
5085 le16_to_cpu(map->row_cnt);
5086 map_index = (map_row * total_disks_per_row) + first_column;
5088 switch (dev->raid_level) {
5090 break; /* nothing special to do */
5092 /* Handles load balance across RAID 1 members.
5093 * (2-drive R1 and R10 with even # of drives.)
5094 * Appropriate for SSDs, not optimal for HDDs
5096 BUG_ON(le16_to_cpu(map->layout_map_count) != 2);
5097 if (dev->offload_to_mirror)
5098 map_index += le16_to_cpu(map->data_disks_per_row);
5099 dev->offload_to_mirror = !dev->offload_to_mirror;
5102 /* Handles N-way mirrors (R1-ADM)
5103 * and R10 with # of drives divisible by 3.)
5105 BUG_ON(le16_to_cpu(map->layout_map_count) != 3);
5107 offload_to_mirror = dev->offload_to_mirror;
5108 raid_map_helper(map, offload_to_mirror,
5109 &map_index, ¤t_group);
5110 /* set mirror group to use next time */
5112 (offload_to_mirror >=
5113 le16_to_cpu(map->layout_map_count) - 1)
5114 ? 0 : offload_to_mirror + 1;
5115 dev->offload_to_mirror = offload_to_mirror;
5116 /* Avoid direct use of dev->offload_to_mirror within this
5117 * function since multiple threads might simultaneously
5118 * increment it beyond the range of dev->layout_map_count -1.
5123 if (le16_to_cpu(map->layout_map_count) <= 1)
5126 /* Verify first and last block are in same RAID group */
5127 r5or6_blocks_per_row =
5128 le16_to_cpu(map->strip_size) *
5129 le16_to_cpu(map->data_disks_per_row);
5130 BUG_ON(r5or6_blocks_per_row == 0);
5131 stripesize = r5or6_blocks_per_row *
5132 le16_to_cpu(map->layout_map_count);
5133 #if BITS_PER_LONG == 32
5134 tmpdiv = first_block;
5135 first_group = do_div(tmpdiv, stripesize);
5136 tmpdiv = first_group;
5137 (void) do_div(tmpdiv, r5or6_blocks_per_row);
5138 first_group = tmpdiv;
5139 tmpdiv = last_block;
5140 last_group = do_div(tmpdiv, stripesize);
5141 tmpdiv = last_group;
5142 (void) do_div(tmpdiv, r5or6_blocks_per_row);
5143 last_group = tmpdiv;
5145 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
5146 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
5148 if (first_group != last_group)
5149 return IO_ACCEL_INELIGIBLE;
5151 /* Verify request is in a single row of RAID 5/6 */
5152 #if BITS_PER_LONG == 32
5153 tmpdiv = first_block;
5154 (void) do_div(tmpdiv, stripesize);
5155 first_row = r5or6_first_row = r0_first_row = tmpdiv;
5156 tmpdiv = last_block;
5157 (void) do_div(tmpdiv, stripesize);
5158 r5or6_last_row = r0_last_row = tmpdiv;
5160 first_row = r5or6_first_row = r0_first_row =
5161 first_block / stripesize;
5162 r5or6_last_row = r0_last_row = last_block / stripesize;
5164 if (r5or6_first_row != r5or6_last_row)
5165 return IO_ACCEL_INELIGIBLE;
5168 /* Verify request is in a single column */
5169 #if BITS_PER_LONG == 32
5170 tmpdiv = first_block;
5171 first_row_offset = do_div(tmpdiv, stripesize);
5172 tmpdiv = first_row_offset;
5173 first_row_offset = (u32) do_div(tmpdiv, r5or6_blocks_per_row);
5174 r5or6_first_row_offset = first_row_offset;
5175 tmpdiv = last_block;
5176 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
5177 tmpdiv = r5or6_last_row_offset;
5178 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
5179 tmpdiv = r5or6_first_row_offset;
5180 (void) do_div(tmpdiv, map->strip_size);
5181 first_column = r5or6_first_column = tmpdiv;
5182 tmpdiv = r5or6_last_row_offset;
5183 (void) do_div(tmpdiv, map->strip_size);
5184 r5or6_last_column = tmpdiv;
5186 first_row_offset = r5or6_first_row_offset =
5187 (u32)((first_block % stripesize) %
5188 r5or6_blocks_per_row);
5190 r5or6_last_row_offset =
5191 (u32)((last_block % stripesize) %
5192 r5or6_blocks_per_row);
5194 first_column = r5or6_first_column =
5195 r5or6_first_row_offset / le16_to_cpu(map->strip_size);
5197 r5or6_last_row_offset / le16_to_cpu(map->strip_size);
5199 if (r5or6_first_column != r5or6_last_column)
5200 return IO_ACCEL_INELIGIBLE;
5202 /* Request is eligible */
5203 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
5204 le16_to_cpu(map->row_cnt);
5206 map_index = (first_group *
5207 (le16_to_cpu(map->row_cnt) * total_disks_per_row)) +
5208 (map_row * total_disks_per_row) + first_column;
5211 return IO_ACCEL_INELIGIBLE;
5214 if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES))
5215 return IO_ACCEL_INELIGIBLE;
5217 c->phys_disk = dev->phys_disk[map_index];
5219 return IO_ACCEL_INELIGIBLE;
5221 disk_handle = dd[map_index].ioaccel_handle;
5222 disk_block = le64_to_cpu(map->disk_starting_blk) +
5223 first_row * le16_to_cpu(map->strip_size) +
5224 (first_row_offset - first_column *
5225 le16_to_cpu(map->strip_size));
5226 disk_block_cnt = block_cnt;
5228 /* handle differing logical/physical block sizes */
5229 if (map->phys_blk_shift) {
5230 disk_block <<= map->phys_blk_shift;
5231 disk_block_cnt <<= map->phys_blk_shift;
5233 BUG_ON(disk_block_cnt > 0xffff);
5235 /* build the new CDB for the physical disk I/O */
5236 if (disk_block > 0xffffffff) {
5237 cdb[0] = is_write ? WRITE_16 : READ_16;
5239 cdb[2] = (u8) (disk_block >> 56);
5240 cdb[3] = (u8) (disk_block >> 48);
5241 cdb[4] = (u8) (disk_block >> 40);
5242 cdb[5] = (u8) (disk_block >> 32);
5243 cdb[6] = (u8) (disk_block >> 24);
5244 cdb[7] = (u8) (disk_block >> 16);
5245 cdb[8] = (u8) (disk_block >> 8);
5246 cdb[9] = (u8) (disk_block);
5247 cdb[10] = (u8) (disk_block_cnt >> 24);
5248 cdb[11] = (u8) (disk_block_cnt >> 16);
5249 cdb[12] = (u8) (disk_block_cnt >> 8);
5250 cdb[13] = (u8) (disk_block_cnt);
5255 cdb[0] = is_write ? WRITE_10 : READ_10;
5257 cdb[2] = (u8) (disk_block >> 24);
5258 cdb[3] = (u8) (disk_block >> 16);
5259 cdb[4] = (u8) (disk_block >> 8);
5260 cdb[5] = (u8) (disk_block);
5262 cdb[7] = (u8) (disk_block_cnt >> 8);
5263 cdb[8] = (u8) (disk_block_cnt);
5267 return hpsa_scsi_ioaccel_queue_command(h, c, disk_handle, cdb, cdb_len,
5269 dev->phys_disk[map_index]);
5273 * Submit commands down the "normal" RAID stack path
5274 * All callers to hpsa_ciss_submit must check lockup_detected
5275 * beforehand, before (opt.) and after calling cmd_alloc
5277 static int hpsa_ciss_submit(struct ctlr_info *h,
5278 struct CommandList *c, struct scsi_cmnd *cmd,
5279 unsigned char scsi3addr[])
5281 cmd->host_scribble = (unsigned char *) c;
5282 c->cmd_type = CMD_SCSI;
5284 c->Header.ReplyQueue = 0; /* unused in simple mode */
5285 memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8);
5286 c->Header.tag = cpu_to_le64((c->cmdindex << DIRECT_LOOKUP_SHIFT));
5288 /* Fill in the request block... */
5290 c->Request.Timeout = 0;
5291 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB));
5292 c->Request.CDBLen = cmd->cmd_len;
5293 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len);
5294 switch (cmd->sc_data_direction) {
5296 c->Request.type_attr_dir =
5297 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_WRITE);
5299 case DMA_FROM_DEVICE:
5300 c->Request.type_attr_dir =
5301 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_READ);
5304 c->Request.type_attr_dir =
5305 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_NONE);
5307 case DMA_BIDIRECTIONAL:
5308 /* This can happen if a buggy application does a scsi passthru
5309 * and sets both inlen and outlen to non-zero. ( see
5310 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
5313 c->Request.type_attr_dir =
5314 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_RSVD);
5315 /* This is technically wrong, and hpsa controllers should
5316 * reject it with CMD_INVALID, which is the most correct
5317 * response, but non-fibre backends appear to let it
5318 * slide by, and give the same results as if this field
5319 * were set correctly. Either way is acceptable for
5320 * our purposes here.
5326 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
5327 cmd->sc_data_direction);
5332 if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */
5333 hpsa_cmd_resolve_and_free(h, c);
5334 return SCSI_MLQUEUE_HOST_BUSY;
5336 enqueue_cmd_and_start_io(h, c);
5337 /* the cmd'll come back via intr handler in complete_scsi_command() */
5341 static void hpsa_cmd_init(struct ctlr_info *h, int index,
5342 struct CommandList *c)
5344 dma_addr_t cmd_dma_handle, err_dma_handle;
5346 /* Zero out all of commandlist except the last field, refcount */
5347 memset(c, 0, offsetof(struct CommandList, refcount));
5348 c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT));
5349 cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
5350 c->err_info = h->errinfo_pool + index;
5351 memset(c->err_info, 0, sizeof(*c->err_info));
5352 err_dma_handle = h->errinfo_pool_dhandle
5353 + index * sizeof(*c->err_info);
5354 c->cmdindex = index;
5355 c->busaddr = (u32) cmd_dma_handle;
5356 c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle);
5357 c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info));
5359 c->scsi_cmd = SCSI_CMD_IDLE;
5362 static void hpsa_preinitialize_commands(struct ctlr_info *h)
5366 for (i = 0; i < h->nr_cmds; i++) {
5367 struct CommandList *c = h->cmd_pool + i;
5369 hpsa_cmd_init(h, i, c);
5370 atomic_set(&c->refcount, 0);
5374 static inline void hpsa_cmd_partial_init(struct ctlr_info *h, int index,
5375 struct CommandList *c)
5377 dma_addr_t cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
5379 BUG_ON(c->cmdindex != index);
5381 memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
5382 memset(c->err_info, 0, sizeof(*c->err_info));
5383 c->busaddr = (u32) cmd_dma_handle;
5386 static int hpsa_ioaccel_submit(struct ctlr_info *h,
5387 struct CommandList *c, struct scsi_cmnd *cmd,
5388 unsigned char *scsi3addr)
5390 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
5391 int rc = IO_ACCEL_INELIGIBLE;
5394 return SCSI_MLQUEUE_HOST_BUSY;
5396 cmd->host_scribble = (unsigned char *) c;
5398 if (dev->offload_enabled) {
5399 hpsa_cmd_init(h, c->cmdindex, c);
5400 c->cmd_type = CMD_SCSI;
5402 rc = hpsa_scsi_ioaccel_raid_map(h, c);
5403 if (rc < 0) /* scsi_dma_map failed. */
5404 rc = SCSI_MLQUEUE_HOST_BUSY;
5405 } else if (dev->hba_ioaccel_enabled) {
5406 hpsa_cmd_init(h, c->cmdindex, c);
5407 c->cmd_type = CMD_SCSI;
5409 rc = hpsa_scsi_ioaccel_direct_map(h, c);
5410 if (rc < 0) /* scsi_dma_map failed. */
5411 rc = SCSI_MLQUEUE_HOST_BUSY;
5416 static void hpsa_command_resubmit_worker(struct work_struct *work)
5418 struct scsi_cmnd *cmd;
5419 struct hpsa_scsi_dev_t *dev;
5420 struct CommandList *c = container_of(work, struct CommandList, work);
5423 dev = cmd->device->hostdata;
5425 cmd->result = DID_NO_CONNECT << 16;
5426 return hpsa_cmd_free_and_done(c->h, c, cmd);
5428 if (c->reset_pending)
5429 return hpsa_cmd_resolve_and_free(c->h, c);
5430 if (c->abort_pending)
5431 return hpsa_cmd_abort_and_free(c->h, c, cmd);
5432 if (c->cmd_type == CMD_IOACCEL2) {
5433 struct ctlr_info *h = c->h;
5434 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
5437 if (c2->error_data.serv_response ==
5438 IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL) {
5439 rc = hpsa_ioaccel_submit(h, c, cmd, dev->scsi3addr);
5442 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
5444 * If we get here, it means dma mapping failed.
5445 * Try again via scsi mid layer, which will
5446 * then get SCSI_MLQUEUE_HOST_BUSY.
5448 cmd->result = DID_IMM_RETRY << 16;
5449 return hpsa_cmd_free_and_done(h, c, cmd);
5451 /* else, fall thru and resubmit down CISS path */
5454 hpsa_cmd_partial_init(c->h, c->cmdindex, c);
5455 if (hpsa_ciss_submit(c->h, c, cmd, dev->scsi3addr)) {
5457 * If we get here, it means dma mapping failed. Try
5458 * again via scsi mid layer, which will then get
5459 * SCSI_MLQUEUE_HOST_BUSY.
5461 * hpsa_ciss_submit will have already freed c
5462 * if it encountered a dma mapping failure.
5464 cmd->result = DID_IMM_RETRY << 16;
5465 cmd->scsi_done(cmd);
5469 /* Running in struct Scsi_Host->host_lock less mode */
5470 static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
5472 struct ctlr_info *h;
5473 struct hpsa_scsi_dev_t *dev;
5474 unsigned char scsi3addr[8];
5475 struct CommandList *c;
5478 /* Get the ptr to our adapter structure out of cmd->host. */
5479 h = sdev_to_hba(cmd->device);
5481 BUG_ON(cmd->request->tag < 0);
5483 dev = cmd->device->hostdata;
5485 cmd->result = NOT_READY << 16; /* host byte */
5486 cmd->scsi_done(cmd);
5491 cmd->result = DID_NO_CONNECT << 16;
5492 cmd->scsi_done(cmd);
5496 memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr));
5498 if (unlikely(lockup_detected(h))) {
5499 cmd->result = DID_NO_CONNECT << 16;
5500 cmd->scsi_done(cmd);
5503 c = cmd_tagged_alloc(h, cmd);
5506 * Call alternate submit routine for I/O accelerated commands.
5507 * Retries always go down the normal I/O path.
5509 if (likely(cmd->retries == 0 &&
5510 cmd->request->cmd_type == REQ_TYPE_FS &&
5511 h->acciopath_status)) {
5512 rc = hpsa_ioaccel_submit(h, c, cmd, scsi3addr);
5515 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
5516 hpsa_cmd_resolve_and_free(h, c);
5517 return SCSI_MLQUEUE_HOST_BUSY;
5520 return hpsa_ciss_submit(h, c, cmd, scsi3addr);
5523 static void hpsa_scan_complete(struct ctlr_info *h)
5525 unsigned long flags;
5527 spin_lock_irqsave(&h->scan_lock, flags);
5528 h->scan_finished = 1;
5529 wake_up_all(&h->scan_wait_queue);
5530 spin_unlock_irqrestore(&h->scan_lock, flags);
5533 static void hpsa_scan_start(struct Scsi_Host *sh)
5535 struct ctlr_info *h = shost_to_hba(sh);
5536 unsigned long flags;
5539 * Don't let rescans be initiated on a controller known to be locked
5540 * up. If the controller locks up *during* a rescan, that thread is
5541 * probably hosed, but at least we can prevent new rescan threads from
5542 * piling up on a locked up controller.
5544 if (unlikely(lockup_detected(h)))
5545 return hpsa_scan_complete(h);
5547 /* wait until any scan already in progress is finished. */
5549 spin_lock_irqsave(&h->scan_lock, flags);
5550 if (h->scan_finished)
5552 spin_unlock_irqrestore(&h->scan_lock, flags);
5553 wait_event(h->scan_wait_queue, h->scan_finished);
5554 /* Note: We don't need to worry about a race between this
5555 * thread and driver unload because the midlayer will
5556 * have incremented the reference count, so unload won't
5557 * happen if we're in here.
5560 h->scan_finished = 0; /* mark scan as in progress */
5561 spin_unlock_irqrestore(&h->scan_lock, flags);
5563 if (unlikely(lockup_detected(h)))
5564 return hpsa_scan_complete(h);
5566 hpsa_update_scsi_devices(h);
5568 hpsa_scan_complete(h);
5571 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth)
5573 struct hpsa_scsi_dev_t *logical_drive = sdev->hostdata;
5580 else if (qdepth > logical_drive->queue_depth)
5581 qdepth = logical_drive->queue_depth;
5583 return scsi_change_queue_depth(sdev, qdepth);
5586 static int hpsa_scan_finished(struct Scsi_Host *sh,
5587 unsigned long elapsed_time)
5589 struct ctlr_info *h = shost_to_hba(sh);
5590 unsigned long flags;
5593 spin_lock_irqsave(&h->scan_lock, flags);
5594 finished = h->scan_finished;
5595 spin_unlock_irqrestore(&h->scan_lock, flags);
5599 static int hpsa_scsi_host_alloc(struct ctlr_info *h)
5601 struct Scsi_Host *sh;
5603 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h));
5605 dev_err(&h->pdev->dev, "scsi_host_alloc failed\n");
5612 sh->max_channel = 3;
5613 sh->max_cmd_len = MAX_COMMAND_SIZE;
5614 sh->max_lun = HPSA_MAX_LUN;
5615 sh->max_id = HPSA_MAX_LUN;
5616 sh->can_queue = h->nr_cmds - HPSA_NRESERVED_CMDS;
5617 sh->cmd_per_lun = sh->can_queue;
5618 sh->sg_tablesize = h->maxsgentries;
5619 sh->transportt = hpsa_sas_transport_template;
5620 sh->hostdata[0] = (unsigned long) h;
5621 sh->irq = h->intr[h->intr_mode];
5622 sh->unique_id = sh->irq;
5628 static int hpsa_scsi_add_host(struct ctlr_info *h)
5632 rv = scsi_add_host(h->scsi_host, &h->pdev->dev);
5634 dev_err(&h->pdev->dev, "scsi_add_host failed\n");
5637 scsi_scan_host(h->scsi_host);
5642 * The block layer has already gone to the trouble of picking out a unique,
5643 * small-integer tag for this request. We use an offset from that value as
5644 * an index to select our command block. (The offset allows us to reserve the
5645 * low-numbered entries for our own uses.)
5647 static int hpsa_get_cmd_index(struct scsi_cmnd *scmd)
5649 int idx = scmd->request->tag;
5654 /* Offset to leave space for internal cmds. */
5655 return idx += HPSA_NRESERVED_CMDS;
5659 * Send a TEST_UNIT_READY command to the specified LUN using the specified
5660 * reply queue; returns zero if the unit is ready, and non-zero otherwise.
5662 static int hpsa_send_test_unit_ready(struct ctlr_info *h,
5663 struct CommandList *c, unsigned char lunaddr[],
5668 /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */
5669 (void) fill_cmd(c, TEST_UNIT_READY, h,
5670 NULL, 0, 0, lunaddr, TYPE_CMD);
5671 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, DEFAULT_TIMEOUT);
5674 /* no unmap needed here because no data xfer. */
5676 /* Check if the unit is already ready. */
5677 if (c->err_info->CommandStatus == CMD_SUCCESS)
5681 * The first command sent after reset will receive "unit attention" to
5682 * indicate that the LUN has been reset...this is actually what we're
5683 * looking for (but, success is good too).
5685 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
5686 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
5687 (c->err_info->SenseInfo[2] == NO_SENSE ||
5688 c->err_info->SenseInfo[2] == UNIT_ATTENTION))
5695 * Wait for a TEST_UNIT_READY command to complete, retrying as necessary;
5696 * returns zero when the unit is ready, and non-zero when giving up.
5698 static int hpsa_wait_for_test_unit_ready(struct ctlr_info *h,
5699 struct CommandList *c,
5700 unsigned char lunaddr[], int reply_queue)
5704 int waittime = 1; /* seconds */
5706 /* Send test unit ready until device ready, or give up. */
5707 for (count = 0; count < HPSA_TUR_RETRY_LIMIT; count++) {
5710 * Wait for a bit. do this first, because if we send
5711 * the TUR right away, the reset will just abort it.
5713 msleep(1000 * waittime);
5715 rc = hpsa_send_test_unit_ready(h, c, lunaddr, reply_queue);
5719 /* Increase wait time with each try, up to a point. */
5720 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS)
5723 dev_warn(&h->pdev->dev,
5724 "waiting %d secs for device to become ready.\n",
5731 static int wait_for_device_to_become_ready(struct ctlr_info *h,
5732 unsigned char lunaddr[],
5739 struct CommandList *c;
5744 * If no specific reply queue was requested, then send the TUR
5745 * repeatedly, requesting a reply on each reply queue; otherwise execute
5746 * the loop exactly once using only the specified queue.
5748 if (reply_queue == DEFAULT_REPLY_QUEUE) {
5750 last_queue = h->nreply_queues - 1;
5752 first_queue = reply_queue;
5753 last_queue = reply_queue;
5756 for (rq = first_queue; rq <= last_queue; rq++) {
5757 rc = hpsa_wait_for_test_unit_ready(h, c, lunaddr, rq);
5763 dev_warn(&h->pdev->dev, "giving up on device.\n");
5765 dev_warn(&h->pdev->dev, "device is ready.\n");
5771 /* Need at least one of these error handlers to keep ../scsi/hosts.c from
5772 * complaining. Doing a host- or bus-reset can't do anything good here.
5774 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
5777 struct ctlr_info *h;
5778 struct hpsa_scsi_dev_t *dev;
5782 /* find the controller to which the command to be aborted was sent */
5783 h = sdev_to_hba(scsicmd->device);
5784 if (h == NULL) /* paranoia */
5787 if (lockup_detected(h))
5790 dev = scsicmd->device->hostdata;
5792 dev_err(&h->pdev->dev, "%s: device lookup failed\n", __func__);
5796 /* if controller locked up, we can guarantee command won't complete */
5797 if (lockup_detected(h)) {
5798 snprintf(msg, sizeof(msg),
5799 "cmd %d RESET FAILED, lockup detected",
5800 hpsa_get_cmd_index(scsicmd));
5801 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5805 /* this reset request might be the result of a lockup; check */
5806 if (detect_controller_lockup(h)) {
5807 snprintf(msg, sizeof(msg),
5808 "cmd %d RESET FAILED, new lockup detected",
5809 hpsa_get_cmd_index(scsicmd));
5810 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5814 /* Do not attempt on controller */
5815 if (is_hba_lunid(dev->scsi3addr))
5818 if (is_logical_dev_addr_mode(dev->scsi3addr))
5819 reset_type = HPSA_DEVICE_RESET_MSG;
5821 reset_type = HPSA_PHYS_TARGET_RESET;
5823 sprintf(msg, "resetting %s",
5824 reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ");
5825 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5827 h->reset_in_progress = 1;
5829 /* send a reset to the SCSI LUN which the command was sent to */
5830 rc = hpsa_do_reset(h, dev, dev->scsi3addr, reset_type,
5831 DEFAULT_REPLY_QUEUE);
5832 sprintf(msg, "reset %s %s",
5833 reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ",
5834 rc == 0 ? "completed successfully" : "failed");
5835 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5836 h->reset_in_progress = 0;
5837 return rc == 0 ? SUCCESS : FAILED;
5840 static void swizzle_abort_tag(u8 *tag)
5844 memcpy(original_tag, tag, 8);
5845 tag[0] = original_tag[3];
5846 tag[1] = original_tag[2];
5847 tag[2] = original_tag[1];
5848 tag[3] = original_tag[0];
5849 tag[4] = original_tag[7];
5850 tag[5] = original_tag[6];
5851 tag[6] = original_tag[5];
5852 tag[7] = original_tag[4];
5855 static void hpsa_get_tag(struct ctlr_info *h,
5856 struct CommandList *c, __le32 *taglower, __le32 *tagupper)
5859 if (c->cmd_type == CMD_IOACCEL1) {
5860 struct io_accel1_cmd *cm1 = (struct io_accel1_cmd *)
5861 &h->ioaccel_cmd_pool[c->cmdindex];
5862 tag = le64_to_cpu(cm1->tag);
5863 *tagupper = cpu_to_le32(tag >> 32);
5864 *taglower = cpu_to_le32(tag);
5867 if (c->cmd_type == CMD_IOACCEL2) {
5868 struct io_accel2_cmd *cm2 = (struct io_accel2_cmd *)
5869 &h->ioaccel2_cmd_pool[c->cmdindex];
5870 /* upper tag not used in ioaccel2 mode */
5871 memset(tagupper, 0, sizeof(*tagupper));
5872 *taglower = cm2->Tag;
5875 tag = le64_to_cpu(c->Header.tag);
5876 *tagupper = cpu_to_le32(tag >> 32);
5877 *taglower = cpu_to_le32(tag);
5880 static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr,
5881 struct CommandList *abort, int reply_queue)
5884 struct CommandList *c;
5885 struct ErrorInfo *ei;
5886 __le32 tagupper, taglower;
5890 /* fill_cmd can't fail here, no buffer to map */
5891 (void) fill_cmd(c, HPSA_ABORT_MSG, h, &abort->Header.tag,
5892 0, 0, scsi3addr, TYPE_MSG);
5893 if (h->needs_abort_tags_swizzled)
5894 swizzle_abort_tag(&c->Request.CDB[4]);
5895 (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, DEFAULT_TIMEOUT);
5896 hpsa_get_tag(h, abort, &taglower, &tagupper);
5897 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: do_simple_cmd(abort) completed.\n",
5898 __func__, tagupper, taglower);
5899 /* no unmap needed here because no data xfer. */
5902 switch (ei->CommandStatus) {
5905 case CMD_TMF_STATUS:
5906 rc = hpsa_evaluate_tmf_status(h, c);
5908 case CMD_UNABORTABLE: /* Very common, don't make noise. */
5912 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: interpreting error.\n",
5913 __func__, tagupper, taglower);
5914 hpsa_scsi_interpret_error(h, c);
5919 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n",
5920 __func__, tagupper, taglower);
5924 static void setup_ioaccel2_abort_cmd(struct CommandList *c, struct ctlr_info *h,
5925 struct CommandList *command_to_abort, int reply_queue)
5927 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
5928 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
5929 struct io_accel2_cmd *c2a =
5930 &h->ioaccel2_cmd_pool[command_to_abort->cmdindex];
5931 struct scsi_cmnd *scmd = command_to_abort->scsi_cmd;
5932 struct hpsa_scsi_dev_t *dev = scmd->device->hostdata;
5938 * We're overlaying struct hpsa_tmf_struct on top of something which
5939 * was allocated as a struct io_accel2_cmd, so we better be sure it
5940 * actually fits, and doesn't overrun the error info space.
5942 BUILD_BUG_ON(sizeof(struct hpsa_tmf_struct) >
5943 sizeof(struct io_accel2_cmd));
5944 BUG_ON(offsetof(struct io_accel2_cmd, error_data) <
5945 offsetof(struct hpsa_tmf_struct, error_len) +
5946 sizeof(ac->error_len));
5948 c->cmd_type = IOACCEL2_TMF;
5949 c->scsi_cmd = SCSI_CMD_BUSY;
5951 /* Adjust the DMA address to point to the accelerated command buffer */
5952 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
5953 (c->cmdindex * sizeof(struct io_accel2_cmd));
5954 BUG_ON(c->busaddr & 0x0000007F);
5956 memset(ac, 0, sizeof(*c2)); /* yes this is correct */
5957 ac->iu_type = IOACCEL2_IU_TMF_TYPE;
5958 ac->reply_queue = reply_queue;
5959 ac->tmf = IOACCEL2_TMF_ABORT;
5960 ac->it_nexus = cpu_to_le32(dev->ioaccel_handle);
5961 memset(ac->lun_id, 0, sizeof(ac->lun_id));
5962 ac->tag = cpu_to_le64(c->cmdindex << DIRECT_LOOKUP_SHIFT);
5963 ac->abort_tag = cpu_to_le64(le32_to_cpu(c2a->Tag));
5964 ac->error_ptr = cpu_to_le64(c->busaddr +
5965 offsetof(struct io_accel2_cmd, error_data));
5966 ac->error_len = cpu_to_le32(sizeof(c2->error_data));
5969 /* ioaccel2 path firmware cannot handle abort task requests.
5970 * Change abort requests to physical target reset, and send to the
5971 * address of the physical disk used for the ioaccel 2 command.
5972 * Return 0 on success (IO_OK)
5976 static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h,
5977 unsigned char *scsi3addr, struct CommandList *abort, int reply_queue)
5980 struct scsi_cmnd *scmd; /* scsi command within request being aborted */
5981 struct hpsa_scsi_dev_t *dev; /* device to which scsi cmd was sent */
5982 unsigned char phys_scsi3addr[8]; /* addr of phys disk with volume */
5983 unsigned char *psa = &phys_scsi3addr[0];
5985 /* Get a pointer to the hpsa logical device. */
5986 scmd = abort->scsi_cmd;
5987 dev = (struct hpsa_scsi_dev_t *)(scmd->device->hostdata);
5989 dev_warn(&h->pdev->dev,
5990 "Cannot abort: no device pointer for command.\n");
5991 return -1; /* not abortable */
5994 if (h->raid_offload_debug > 0)
5995 dev_info(&h->pdev->dev,
5996 "scsi %d:%d:%d:%d %s scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5997 h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
5999 scsi3addr[0], scsi3addr[1], scsi3addr[2], scsi3addr[3],
6000 scsi3addr[4], scsi3addr[5], scsi3addr[6], scsi3addr[7]);
6002 if (!dev->offload_enabled) {
6003 dev_warn(&h->pdev->dev,
6004 "Can't abort: device is not operating in HP SSD Smart Path mode.\n");
6005 return -1; /* not abortable */
6008 /* Incoming scsi3addr is logical addr. We need physical disk addr. */
6009 if (!hpsa_get_pdisk_of_ioaccel2(h, abort, psa)) {
6010 dev_warn(&h->pdev->dev, "Can't abort: Failed lookup of physical address.\n");
6011 return -1; /* not abortable */
6014 /* send the reset */
6015 if (h->raid_offload_debug > 0)
6016 dev_info(&h->pdev->dev,
6017 "Reset as abort: Resetting physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
6018 psa[0], psa[1], psa[2], psa[3],
6019 psa[4], psa[5], psa[6], psa[7]);
6020 rc = hpsa_do_reset(h, dev, psa, HPSA_PHYS_TARGET_RESET, reply_queue);
6022 dev_warn(&h->pdev->dev,
6023 "Reset as abort: Failed on physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
6024 psa[0], psa[1], psa[2], psa[3],
6025 psa[4], psa[5], psa[6], psa[7]);
6026 return rc; /* failed to reset */
6029 /* wait for device to recover */
6030 if (wait_for_device_to_become_ready(h, psa, reply_queue) != 0) {
6031 dev_warn(&h->pdev->dev,
6032 "Reset as abort: Failed: Device never recovered from reset: 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
6033 psa[0], psa[1], psa[2], psa[3],
6034 psa[4], psa[5], psa[6], psa[7]);
6035 return -1; /* failed to recover */
6038 /* device recovered */
6039 dev_info(&h->pdev->dev,
6040 "Reset as abort: Device recovered from reset: scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
6041 psa[0], psa[1], psa[2], psa[3],
6042 psa[4], psa[5], psa[6], psa[7]);
6044 return rc; /* success */
6047 static int hpsa_send_abort_ioaccel2(struct ctlr_info *h,
6048 struct CommandList *abort, int reply_queue)
6051 struct CommandList *c;
6052 __le32 taglower, tagupper;
6053 struct hpsa_scsi_dev_t *dev;
6054 struct io_accel2_cmd *c2;
6056 dev = abort->scsi_cmd->device->hostdata;
6060 if (!dev->offload_enabled && !dev->hba_ioaccel_enabled)
6064 setup_ioaccel2_abort_cmd(c, h, abort, reply_queue);
6065 c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
6066 (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, DEFAULT_TIMEOUT);
6067 hpsa_get_tag(h, abort, &taglower, &tagupper);
6068 dev_dbg(&h->pdev->dev,
6069 "%s: Tag:0x%08x:%08x: do_simple_cmd(ioaccel2 abort) completed.\n",
6070 __func__, tagupper, taglower);
6071 /* no unmap needed here because no data xfer. */
6073 dev_dbg(&h->pdev->dev,
6074 "%s: Tag:0x%08x:%08x: abort service response = 0x%02x.\n",
6075 __func__, tagupper, taglower, c2->error_data.serv_response);
6076 switch (c2->error_data.serv_response) {
6077 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
6078 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
6081 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
6082 case IOACCEL2_SERV_RESPONSE_FAILURE:
6083 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
6087 dev_warn(&h->pdev->dev,
6088 "%s: Tag:0x%08x:%08x: unknown abort service response 0x%02x\n",
6089 __func__, tagupper, taglower,
6090 c2->error_data.serv_response);
6094 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n", __func__,
6095 tagupper, taglower);
6099 static int hpsa_send_abort_both_ways(struct ctlr_info *h,
6100 struct hpsa_scsi_dev_t *dev, struct CommandList *abort, int reply_queue)
6103 * ioccelerator mode 2 commands should be aborted via the
6104 * accelerated path, since RAID path is unaware of these commands,
6105 * but not all underlying firmware can handle abort TMF.
6106 * Change abort to physical device reset when abort TMF is unsupported.
6108 if (abort->cmd_type == CMD_IOACCEL2) {
6109 if ((HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags) ||
6110 dev->physical_device)
6111 return hpsa_send_abort_ioaccel2(h, abort,
6114 return hpsa_send_reset_as_abort_ioaccel2(h,
6116 abort, reply_queue);
6118 return hpsa_send_abort(h, dev->scsi3addr, abort, reply_queue);
6121 /* Find out which reply queue a command was meant to return on */
6122 static int hpsa_extract_reply_queue(struct ctlr_info *h,
6123 struct CommandList *c)
6125 if (c->cmd_type == CMD_IOACCEL2)
6126 return h->ioaccel2_cmd_pool[c->cmdindex].reply_queue;
6127 return c->Header.ReplyQueue;
6131 * Limit concurrency of abort commands to prevent
6132 * over-subscription of commands
6134 static inline int wait_for_available_abort_cmd(struct ctlr_info *h)
6136 #define ABORT_CMD_WAIT_MSECS 5000
6137 return !wait_event_timeout(h->abort_cmd_wait_queue,
6138 atomic_dec_if_positive(&h->abort_cmds_available) >= 0,
6139 msecs_to_jiffies(ABORT_CMD_WAIT_MSECS));
6142 /* Send an abort for the specified command.
6143 * If the device and controller support it,
6144 * send a task abort request.
6146 static int hpsa_eh_abort_handler(struct scsi_cmnd *sc)
6150 struct ctlr_info *h;
6151 struct hpsa_scsi_dev_t *dev;
6152 struct CommandList *abort; /* pointer to command to be aborted */
6153 struct scsi_cmnd *as; /* ptr to scsi cmd inside aborted command. */
6154 char msg[256]; /* For debug messaging. */
6156 __le32 tagupper, taglower;
6157 int refcount, reply_queue;
6162 if (sc->device == NULL)
6165 /* Find the controller of the command to be aborted */
6166 h = sdev_to_hba(sc->device);
6170 /* Find the device of the command to be aborted */
6171 dev = sc->device->hostdata;
6173 dev_err(&h->pdev->dev, "%s FAILED, Device lookup failed.\n",
6178 /* If controller locked up, we can guarantee command won't complete */
6179 if (lockup_detected(h)) {
6180 hpsa_show_dev_msg(KERN_WARNING, h, dev,
6181 "ABORT FAILED, lockup detected");
6185 /* This is a good time to check if controller lockup has occurred */
6186 if (detect_controller_lockup(h)) {
6187 hpsa_show_dev_msg(KERN_WARNING, h, dev,
6188 "ABORT FAILED, new lockup detected");
6192 /* Check that controller supports some kind of task abort */
6193 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags) &&
6194 !(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
6197 memset(msg, 0, sizeof(msg));
6198 ml += sprintf(msg+ml, "scsi %d:%d:%d:%llu %s %p",
6199 h->scsi_host->host_no, sc->device->channel,
6200 sc->device->id, sc->device->lun,
6201 "Aborting command", sc);
6203 /* Get SCSI command to be aborted */
6204 abort = (struct CommandList *) sc->host_scribble;
6205 if (abort == NULL) {
6206 /* This can happen if the command already completed. */
6209 refcount = atomic_inc_return(&abort->refcount);
6210 if (refcount == 1) { /* Command is done already. */
6215 /* Don't bother trying the abort if we know it won't work. */
6216 if (abort->cmd_type != CMD_IOACCEL2 &&
6217 abort->cmd_type != CMD_IOACCEL1 && !dev->supports_aborts) {
6223 * Check that we're aborting the right command.
6224 * It's possible the CommandList already completed and got re-used.
6226 if (abort->scsi_cmd != sc) {
6231 abort->abort_pending = true;
6232 hpsa_get_tag(h, abort, &taglower, &tagupper);
6233 reply_queue = hpsa_extract_reply_queue(h, abort);
6234 ml += sprintf(msg+ml, "Tag:0x%08x:%08x ", tagupper, taglower);
6235 as = abort->scsi_cmd;
6237 ml += sprintf(msg+ml,
6238 "CDBLen: %d CDB: 0x%02x%02x... SN: 0x%lx ",
6239 as->cmd_len, as->cmnd[0], as->cmnd[1],
6241 dev_warn(&h->pdev->dev, "%s BEING SENT\n", msg);
6242 hpsa_show_dev_msg(KERN_WARNING, h, dev, "Aborting command");
6245 * Command is in flight, or possibly already completed
6246 * by the firmware (but not to the scsi mid layer) but we can't
6247 * distinguish which. Send the abort down.
6249 if (wait_for_available_abort_cmd(h)) {
6250 dev_warn(&h->pdev->dev,
6251 "%s FAILED, timeout waiting for an abort command to become available.\n",
6256 rc = hpsa_send_abort_both_ways(h, dev, abort, reply_queue);
6257 atomic_inc(&h->abort_cmds_available);
6258 wake_up_all(&h->abort_cmd_wait_queue);
6260 dev_warn(&h->pdev->dev, "%s SENT, FAILED\n", msg);
6261 hpsa_show_dev_msg(KERN_WARNING, h, dev,
6262 "FAILED to abort command");
6266 dev_info(&h->pdev->dev, "%s SENT, SUCCESS\n", msg);
6267 wait_event(h->event_sync_wait_queue,
6268 abort->scsi_cmd != sc || lockup_detected(h));
6270 return !lockup_detected(h) ? SUCCESS : FAILED;
6274 * For operations with an associated SCSI command, a command block is allocated
6275 * at init, and managed by cmd_tagged_alloc() and cmd_tagged_free() using the
6276 * block request tag as an index into a table of entries. cmd_tagged_free() is
6277 * the complement, although cmd_free() may be called instead.
6279 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
6280 struct scsi_cmnd *scmd)
6282 int idx = hpsa_get_cmd_index(scmd);
6283 struct CommandList *c = h->cmd_pool + idx;
6285 if (idx < HPSA_NRESERVED_CMDS || idx >= h->nr_cmds) {
6286 dev_err(&h->pdev->dev, "Bad block tag: %d not in [%d..%d]\n",
6287 idx, HPSA_NRESERVED_CMDS, h->nr_cmds - 1);
6288 /* The index value comes from the block layer, so if it's out of
6289 * bounds, it's probably not our bug.
6294 atomic_inc(&c->refcount);
6295 if (unlikely(!hpsa_is_cmd_idle(c))) {
6297 * We expect that the SCSI layer will hand us a unique tag
6298 * value. Thus, there should never be a collision here between
6299 * two requests...because if the selected command isn't idle
6300 * then someone is going to be very disappointed.
6302 dev_err(&h->pdev->dev,
6303 "tag collision (tag=%d) in cmd_tagged_alloc().\n",
6305 if (c->scsi_cmd != NULL)
6306 scsi_print_command(c->scsi_cmd);
6307 scsi_print_command(scmd);
6310 hpsa_cmd_partial_init(h, idx, c);
6314 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c)
6317 * Release our reference to the block. We don't need to do anything
6318 * else to free it, because it is accessed by index. (There's no point
6319 * in checking the result of the decrement, since we cannot guarantee
6320 * that there isn't a concurrent abort which is also accessing it.)
6322 (void)atomic_dec(&c->refcount);
6326 * For operations that cannot sleep, a command block is allocated at init,
6327 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
6328 * which ones are free or in use. Lock must be held when calling this.
6329 * cmd_free() is the complement.
6330 * This function never gives up and returns NULL. If it hangs,
6331 * another thread must call cmd_free() to free some tags.
6334 static struct CommandList *cmd_alloc(struct ctlr_info *h)
6336 struct CommandList *c;
6341 * There is some *extremely* small but non-zero chance that that
6342 * multiple threads could get in here, and one thread could
6343 * be scanning through the list of bits looking for a free
6344 * one, but the free ones are always behind him, and other
6345 * threads sneak in behind him and eat them before he can
6346 * get to them, so that while there is always a free one, a
6347 * very unlucky thread might be starved anyway, never able to
6348 * beat the other threads. In reality, this happens so
6349 * infrequently as to be indistinguishable from never.
6351 * Note that we start allocating commands before the SCSI host structure
6352 * is initialized. Since the search starts at bit zero, this
6353 * all works, since we have at least one command structure available;
6354 * however, it means that the structures with the low indexes have to be
6355 * reserved for driver-initiated requests, while requests from the block
6356 * layer will use the higher indexes.
6360 i = find_next_zero_bit(h->cmd_pool_bits,
6361 HPSA_NRESERVED_CMDS,
6363 if (unlikely(i >= HPSA_NRESERVED_CMDS)) {
6367 c = h->cmd_pool + i;
6368 refcount = atomic_inc_return(&c->refcount);
6369 if (unlikely(refcount > 1)) {
6370 cmd_free(h, c); /* already in use */
6371 offset = (i + 1) % HPSA_NRESERVED_CMDS;
6374 set_bit(i & (BITS_PER_LONG - 1),
6375 h->cmd_pool_bits + (i / BITS_PER_LONG));
6376 break; /* it's ours now. */
6378 hpsa_cmd_partial_init(h, i, c);
6383 * This is the complementary operation to cmd_alloc(). Note, however, in some
6384 * corner cases it may also be used to free blocks allocated by
6385 * cmd_tagged_alloc() in which case the ref-count decrement does the trick and
6386 * the clear-bit is harmless.
6388 static void cmd_free(struct ctlr_info *h, struct CommandList *c)
6390 if (atomic_dec_and_test(&c->refcount)) {
6393 i = c - h->cmd_pool;
6394 clear_bit(i & (BITS_PER_LONG - 1),
6395 h->cmd_pool_bits + (i / BITS_PER_LONG));
6399 #ifdef CONFIG_COMPAT
6401 static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd,
6404 IOCTL32_Command_struct __user *arg32 =
6405 (IOCTL32_Command_struct __user *) arg;
6406 IOCTL_Command_struct arg64;
6407 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
6411 memset(&arg64, 0, sizeof(arg64));
6413 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
6414 sizeof(arg64.LUN_info));
6415 err |= copy_from_user(&arg64.Request, &arg32->Request,
6416 sizeof(arg64.Request));
6417 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
6418 sizeof(arg64.error_info));
6419 err |= get_user(arg64.buf_size, &arg32->buf_size);
6420 err |= get_user(cp, &arg32->buf);
6421 arg64.buf = compat_ptr(cp);
6422 err |= copy_to_user(p, &arg64, sizeof(arg64));
6427 err = hpsa_ioctl(dev, CCISS_PASSTHRU, p);
6430 err |= copy_in_user(&arg32->error_info, &p->error_info,
6431 sizeof(arg32->error_info));
6437 static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
6438 int cmd, void __user *arg)
6440 BIG_IOCTL32_Command_struct __user *arg32 =
6441 (BIG_IOCTL32_Command_struct __user *) arg;
6442 BIG_IOCTL_Command_struct arg64;
6443 BIG_IOCTL_Command_struct __user *p =
6444 compat_alloc_user_space(sizeof(arg64));
6448 memset(&arg64, 0, sizeof(arg64));
6450 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
6451 sizeof(arg64.LUN_info));
6452 err |= copy_from_user(&arg64.Request, &arg32->Request,
6453 sizeof(arg64.Request));
6454 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
6455 sizeof(arg64.error_info));
6456 err |= get_user(arg64.buf_size, &arg32->buf_size);
6457 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
6458 err |= get_user(cp, &arg32->buf);
6459 arg64.buf = compat_ptr(cp);
6460 err |= copy_to_user(p, &arg64, sizeof(arg64));
6465 err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, p);
6468 err |= copy_in_user(&arg32->error_info, &p->error_info,
6469 sizeof(arg32->error_info));
6475 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
6478 case CCISS_GETPCIINFO:
6479 case CCISS_GETINTINFO:
6480 case CCISS_SETINTINFO:
6481 case CCISS_GETNODENAME:
6482 case CCISS_SETNODENAME:
6483 case CCISS_GETHEARTBEAT:
6484 case CCISS_GETBUSTYPES:
6485 case CCISS_GETFIRMVER:
6486 case CCISS_GETDRIVVER:
6487 case CCISS_REVALIDVOLS:
6488 case CCISS_DEREGDISK:
6489 case CCISS_REGNEWDISK:
6491 case CCISS_RESCANDISK:
6492 case CCISS_GETLUNINFO:
6493 return hpsa_ioctl(dev, cmd, arg);
6495 case CCISS_PASSTHRU32:
6496 return hpsa_ioctl32_passthru(dev, cmd, arg);
6497 case CCISS_BIG_PASSTHRU32:
6498 return hpsa_ioctl32_big_passthru(dev, cmd, arg);
6501 return -ENOIOCTLCMD;
6506 static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp)
6508 struct hpsa_pci_info pciinfo;
6512 pciinfo.domain = pci_domain_nr(h->pdev->bus);
6513 pciinfo.bus = h->pdev->bus->number;
6514 pciinfo.dev_fn = h->pdev->devfn;
6515 pciinfo.board_id = h->board_id;
6516 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo)))
6521 static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp)
6523 DriverVer_type DriverVer;
6524 unsigned char vmaj, vmin, vsubmin;
6527 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu",
6528 &vmaj, &vmin, &vsubmin);
6530 dev_info(&h->pdev->dev, "driver version string '%s' "
6531 "unrecognized.", HPSA_DRIVER_VERSION);
6536 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin;
6539 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type)))
6544 static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
6546 IOCTL_Command_struct iocommand;
6547 struct CommandList *c;
6554 if (!capable(CAP_SYS_RAWIO))
6556 if (copy_from_user(&iocommand, argp, sizeof(iocommand)))
6558 if ((iocommand.buf_size < 1) &&
6559 (iocommand.Request.Type.Direction != XFER_NONE)) {
6562 if (iocommand.buf_size > 0) {
6563 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
6566 if (iocommand.Request.Type.Direction & XFER_WRITE) {
6567 /* Copy the data into the buffer we created */
6568 if (copy_from_user(buff, iocommand.buf,
6569 iocommand.buf_size)) {
6574 memset(buff, 0, iocommand.buf_size);
6579 /* Fill in the command type */
6580 c->cmd_type = CMD_IOCTL_PEND;
6581 c->scsi_cmd = SCSI_CMD_BUSY;
6582 /* Fill in Command Header */
6583 c->Header.ReplyQueue = 0; /* unused in simple mode */
6584 if (iocommand.buf_size > 0) { /* buffer to fill */
6585 c->Header.SGList = 1;
6586 c->Header.SGTotal = cpu_to_le16(1);
6587 } else { /* no buffers to fill */
6588 c->Header.SGList = 0;
6589 c->Header.SGTotal = cpu_to_le16(0);
6591 memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN));
6593 /* Fill in Request block */
6594 memcpy(&c->Request, &iocommand.Request,
6595 sizeof(c->Request));
6597 /* Fill in the scatter gather information */
6598 if (iocommand.buf_size > 0) {
6599 temp64 = pci_map_single(h->pdev, buff,
6600 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
6601 if (dma_mapping_error(&h->pdev->dev, (dma_addr_t) temp64)) {
6602 c->SG[0].Addr = cpu_to_le64(0);
6603 c->SG[0].Len = cpu_to_le32(0);
6607 c->SG[0].Addr = cpu_to_le64(temp64);
6608 c->SG[0].Len = cpu_to_le32(iocommand.buf_size);
6609 c->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* not chaining */
6611 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
6613 if (iocommand.buf_size > 0)
6614 hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
6615 check_ioctl_unit_attention(h, c);
6621 /* Copy the error information out */
6622 memcpy(&iocommand.error_info, c->err_info,
6623 sizeof(iocommand.error_info));
6624 if (copy_to_user(argp, &iocommand, sizeof(iocommand))) {
6628 if ((iocommand.Request.Type.Direction & XFER_READ) &&
6629 iocommand.buf_size > 0) {
6630 /* Copy the data out of the buffer we created */
6631 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
6643 static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
6645 BIG_IOCTL_Command_struct *ioc;
6646 struct CommandList *c;
6647 unsigned char **buff = NULL;
6648 int *buff_size = NULL;
6654 BYTE __user *data_ptr;
6658 if (!capable(CAP_SYS_RAWIO))
6660 ioc = (BIG_IOCTL_Command_struct *)
6661 kmalloc(sizeof(*ioc), GFP_KERNEL);
6666 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
6670 if ((ioc->buf_size < 1) &&
6671 (ioc->Request.Type.Direction != XFER_NONE)) {
6675 /* Check kmalloc limits using all SGs */
6676 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
6680 if (ioc->buf_size > ioc->malloc_size * SG_ENTRIES_IN_CMD) {
6684 buff = kzalloc(SG_ENTRIES_IN_CMD * sizeof(char *), GFP_KERNEL);
6689 buff_size = kmalloc(SG_ENTRIES_IN_CMD * sizeof(int), GFP_KERNEL);
6694 left = ioc->buf_size;
6695 data_ptr = ioc->buf;
6697 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
6698 buff_size[sg_used] = sz;
6699 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
6700 if (buff[sg_used] == NULL) {
6704 if (ioc->Request.Type.Direction & XFER_WRITE) {
6705 if (copy_from_user(buff[sg_used], data_ptr, sz)) {
6710 memset(buff[sg_used], 0, sz);
6717 c->cmd_type = CMD_IOCTL_PEND;
6718 c->scsi_cmd = SCSI_CMD_BUSY;
6719 c->Header.ReplyQueue = 0;
6720 c->Header.SGList = (u8) sg_used;
6721 c->Header.SGTotal = cpu_to_le16(sg_used);
6722 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN));
6723 memcpy(&c->Request, &ioc->Request, sizeof(c->Request));
6724 if (ioc->buf_size > 0) {
6726 for (i = 0; i < sg_used; i++) {
6727 temp64 = pci_map_single(h->pdev, buff[i],
6728 buff_size[i], PCI_DMA_BIDIRECTIONAL);
6729 if (dma_mapping_error(&h->pdev->dev,
6730 (dma_addr_t) temp64)) {
6731 c->SG[i].Addr = cpu_to_le64(0);
6732 c->SG[i].Len = cpu_to_le32(0);
6733 hpsa_pci_unmap(h->pdev, c, i,
6734 PCI_DMA_BIDIRECTIONAL);
6738 c->SG[i].Addr = cpu_to_le64(temp64);
6739 c->SG[i].Len = cpu_to_le32(buff_size[i]);
6740 c->SG[i].Ext = cpu_to_le32(0);
6742 c->SG[--i].Ext = cpu_to_le32(HPSA_SG_LAST);
6744 status = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
6747 hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL);
6748 check_ioctl_unit_attention(h, c);
6754 /* Copy the error information out */
6755 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info));
6756 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
6760 if ((ioc->Request.Type.Direction & XFER_READ) && ioc->buf_size > 0) {
6763 /* Copy the data out of the buffer we created */
6764 BYTE __user *ptr = ioc->buf;
6765 for (i = 0; i < sg_used; i++) {
6766 if (copy_to_user(ptr, buff[i], buff_size[i])) {
6770 ptr += buff_size[i];
6780 for (i = 0; i < sg_used; i++)
6789 static void check_ioctl_unit_attention(struct ctlr_info *h,
6790 struct CommandList *c)
6792 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
6793 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
6794 (void) check_for_unit_attention(h, c);
6800 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
6802 struct ctlr_info *h;
6803 void __user *argp = (void __user *)arg;
6806 h = sdev_to_hba(dev);
6809 case CCISS_DEREGDISK:
6810 case CCISS_REGNEWDISK:
6812 hpsa_scan_start(h->scsi_host);
6814 case CCISS_GETPCIINFO:
6815 return hpsa_getpciinfo_ioctl(h, argp);
6816 case CCISS_GETDRIVVER:
6817 return hpsa_getdrivver_ioctl(h, argp);
6818 case CCISS_PASSTHRU:
6819 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6821 rc = hpsa_passthru_ioctl(h, argp);
6822 atomic_inc(&h->passthru_cmds_avail);
6824 case CCISS_BIG_PASSTHRU:
6825 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6827 rc = hpsa_big_passthru_ioctl(h, argp);
6828 atomic_inc(&h->passthru_cmds_avail);
6835 static void hpsa_send_host_reset(struct ctlr_info *h, unsigned char *scsi3addr,
6838 struct CommandList *c;
6842 /* fill_cmd can't fail here, no data buffer to map */
6843 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0,
6844 RAID_CTLR_LUNID, TYPE_MSG);
6845 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */
6847 enqueue_cmd_and_start_io(h, c);
6848 /* Don't wait for completion, the reset won't complete. Don't free
6849 * the command either. This is the last command we will send before
6850 * re-initializing everything, so it doesn't matter and won't leak.
6855 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
6856 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
6859 int pci_dir = XFER_NONE;
6860 u64 tag; /* for commands to be aborted */
6862 c->cmd_type = CMD_IOCTL_PEND;
6863 c->scsi_cmd = SCSI_CMD_BUSY;
6864 c->Header.ReplyQueue = 0;
6865 if (buff != NULL && size > 0) {
6866 c->Header.SGList = 1;
6867 c->Header.SGTotal = cpu_to_le16(1);
6869 c->Header.SGList = 0;
6870 c->Header.SGTotal = cpu_to_le16(0);
6872 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
6874 if (cmd_type == TYPE_CMD) {
6877 /* are we trying to read a vital product page */
6878 if (page_code & VPD_PAGE) {
6879 c->Request.CDB[1] = 0x01;
6880 c->Request.CDB[2] = (page_code & 0xff);
6882 c->Request.CDBLen = 6;
6883 c->Request.type_attr_dir =
6884 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6885 c->Request.Timeout = 0;
6886 c->Request.CDB[0] = HPSA_INQUIRY;
6887 c->Request.CDB[4] = size & 0xFF;
6889 case HPSA_REPORT_LOG:
6890 case HPSA_REPORT_PHYS:
6891 /* Talking to controller so It's a physical command
6892 mode = 00 target = 0. Nothing to write.
6894 c->Request.CDBLen = 12;
6895 c->Request.type_attr_dir =
6896 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6897 c->Request.Timeout = 0;
6898 c->Request.CDB[0] = cmd;
6899 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6900 c->Request.CDB[7] = (size >> 16) & 0xFF;
6901 c->Request.CDB[8] = (size >> 8) & 0xFF;
6902 c->Request.CDB[9] = size & 0xFF;
6904 case BMIC_SENSE_DIAG_OPTIONS:
6905 c->Request.CDBLen = 16;
6906 c->Request.type_attr_dir =
6907 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6908 c->Request.Timeout = 0;
6909 /* Spec says this should be BMIC_WRITE */
6910 c->Request.CDB[0] = BMIC_READ;
6911 c->Request.CDB[6] = BMIC_SENSE_DIAG_OPTIONS;
6913 case BMIC_SET_DIAG_OPTIONS:
6914 c->Request.CDBLen = 16;
6915 c->Request.type_attr_dir =
6916 TYPE_ATTR_DIR(cmd_type,
6917 ATTR_SIMPLE, XFER_WRITE);
6918 c->Request.Timeout = 0;
6919 c->Request.CDB[0] = BMIC_WRITE;
6920 c->Request.CDB[6] = BMIC_SET_DIAG_OPTIONS;
6922 case HPSA_CACHE_FLUSH:
6923 c->Request.CDBLen = 12;
6924 c->Request.type_attr_dir =
6925 TYPE_ATTR_DIR(cmd_type,
6926 ATTR_SIMPLE, XFER_WRITE);
6927 c->Request.Timeout = 0;
6928 c->Request.CDB[0] = BMIC_WRITE;
6929 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
6930 c->Request.CDB[7] = (size >> 8) & 0xFF;
6931 c->Request.CDB[8] = size & 0xFF;
6933 case TEST_UNIT_READY:
6934 c->Request.CDBLen = 6;
6935 c->Request.type_attr_dir =
6936 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6937 c->Request.Timeout = 0;
6939 case HPSA_GET_RAID_MAP:
6940 c->Request.CDBLen = 12;
6941 c->Request.type_attr_dir =
6942 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6943 c->Request.Timeout = 0;
6944 c->Request.CDB[0] = HPSA_CISS_READ;
6945 c->Request.CDB[1] = cmd;
6946 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6947 c->Request.CDB[7] = (size >> 16) & 0xFF;
6948 c->Request.CDB[8] = (size >> 8) & 0xFF;
6949 c->Request.CDB[9] = size & 0xFF;
6951 case BMIC_SENSE_CONTROLLER_PARAMETERS:
6952 c->Request.CDBLen = 10;
6953 c->Request.type_attr_dir =
6954 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6955 c->Request.Timeout = 0;
6956 c->Request.CDB[0] = BMIC_READ;
6957 c->Request.CDB[6] = BMIC_SENSE_CONTROLLER_PARAMETERS;
6958 c->Request.CDB[7] = (size >> 16) & 0xFF;
6959 c->Request.CDB[8] = (size >> 8) & 0xFF;
6961 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
6962 c->Request.CDBLen = 10;
6963 c->Request.type_attr_dir =
6964 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6965 c->Request.Timeout = 0;
6966 c->Request.CDB[0] = BMIC_READ;
6967 c->Request.CDB[6] = BMIC_IDENTIFY_PHYSICAL_DEVICE;
6968 c->Request.CDB[7] = (size >> 16) & 0xFF;
6969 c->Request.CDB[8] = (size >> 8) & 0XFF;
6971 case BMIC_SENSE_SUBSYSTEM_INFORMATION:
6972 c->Request.CDBLen = 10;
6973 c->Request.type_attr_dir =
6974 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6975 c->Request.Timeout = 0;
6976 c->Request.CDB[0] = BMIC_READ;
6977 c->Request.CDB[6] = BMIC_SENSE_SUBSYSTEM_INFORMATION;
6978 c->Request.CDB[7] = (size >> 16) & 0xFF;
6979 c->Request.CDB[8] = (size >> 8) & 0XFF;
6981 case BMIC_SENSE_STORAGE_BOX_PARAMS:
6982 c->Request.CDBLen = 10;
6983 c->Request.type_attr_dir =
6984 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6985 c->Request.Timeout = 0;
6986 c->Request.CDB[0] = BMIC_READ;
6987 c->Request.CDB[6] = BMIC_SENSE_STORAGE_BOX_PARAMS;
6988 c->Request.CDB[7] = (size >> 16) & 0xFF;
6989 c->Request.CDB[8] = (size >> 8) & 0XFF;
6991 case BMIC_IDENTIFY_CONTROLLER:
6992 c->Request.CDBLen = 10;
6993 c->Request.type_attr_dir =
6994 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6995 c->Request.Timeout = 0;
6996 c->Request.CDB[0] = BMIC_READ;
6997 c->Request.CDB[1] = 0;
6998 c->Request.CDB[2] = 0;
6999 c->Request.CDB[3] = 0;
7000 c->Request.CDB[4] = 0;
7001 c->Request.CDB[5] = 0;
7002 c->Request.CDB[6] = BMIC_IDENTIFY_CONTROLLER;
7003 c->Request.CDB[7] = (size >> 16) & 0xFF;
7004 c->Request.CDB[8] = (size >> 8) & 0XFF;
7005 c->Request.CDB[9] = 0;
7008 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd);
7012 } else if (cmd_type == TYPE_MSG) {
7015 case HPSA_PHYS_TARGET_RESET:
7016 c->Request.CDBLen = 16;
7017 c->Request.type_attr_dir =
7018 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
7019 c->Request.Timeout = 0; /* Don't time out */
7020 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
7021 c->Request.CDB[0] = HPSA_RESET;
7022 c->Request.CDB[1] = HPSA_TARGET_RESET_TYPE;
7023 /* Physical target reset needs no control bytes 4-7*/
7024 c->Request.CDB[4] = 0x00;
7025 c->Request.CDB[5] = 0x00;
7026 c->Request.CDB[6] = 0x00;
7027 c->Request.CDB[7] = 0x00;
7029 case HPSA_DEVICE_RESET_MSG:
7030 c->Request.CDBLen = 16;
7031 c->Request.type_attr_dir =
7032 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
7033 c->Request.Timeout = 0; /* Don't time out */
7034 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
7035 c->Request.CDB[0] = cmd;
7036 c->Request.CDB[1] = HPSA_RESET_TYPE_LUN;
7037 /* If bytes 4-7 are zero, it means reset the */
7039 c->Request.CDB[4] = 0x00;
7040 c->Request.CDB[5] = 0x00;
7041 c->Request.CDB[6] = 0x00;
7042 c->Request.CDB[7] = 0x00;
7044 case HPSA_ABORT_MSG:
7045 memcpy(&tag, buff, sizeof(tag));
7046 dev_dbg(&h->pdev->dev,
7047 "Abort Tag:0x%016llx using rqst Tag:0x%016llx",
7048 tag, c->Header.tag);
7049 c->Request.CDBLen = 16;
7050 c->Request.type_attr_dir =
7051 TYPE_ATTR_DIR(cmd_type,
7052 ATTR_SIMPLE, XFER_WRITE);
7053 c->Request.Timeout = 0; /* Don't time out */
7054 c->Request.CDB[0] = HPSA_TASK_MANAGEMENT;
7055 c->Request.CDB[1] = HPSA_TMF_ABORT_TASK;
7056 c->Request.CDB[2] = 0x00; /* reserved */
7057 c->Request.CDB[3] = 0x00; /* reserved */
7058 /* Tag to abort goes in CDB[4]-CDB[11] */
7059 memcpy(&c->Request.CDB[4], &tag, sizeof(tag));
7060 c->Request.CDB[12] = 0x00; /* reserved */
7061 c->Request.CDB[13] = 0x00; /* reserved */
7062 c->Request.CDB[14] = 0x00; /* reserved */
7063 c->Request.CDB[15] = 0x00; /* reserved */
7066 dev_warn(&h->pdev->dev, "unknown message type %d\n",
7071 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type);
7075 switch (GET_DIR(c->Request.type_attr_dir)) {
7077 pci_dir = PCI_DMA_FROMDEVICE;
7080 pci_dir = PCI_DMA_TODEVICE;
7083 pci_dir = PCI_DMA_NONE;
7086 pci_dir = PCI_DMA_BIDIRECTIONAL;
7088 if (hpsa_map_one(h->pdev, c, buff, size, pci_dir))
7094 * Map (physical) PCI mem into (virtual) kernel space
7096 static void __iomem *remap_pci_mem(ulong base, ulong size)
7098 ulong page_base = ((ulong) base) & PAGE_MASK;
7099 ulong page_offs = ((ulong) base) - page_base;
7100 void __iomem *page_remapped = ioremap_nocache(page_base,
7103 return page_remapped ? (page_remapped + page_offs) : NULL;
7106 static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q)
7108 return h->access.command_completed(h, q);
7111 static inline bool interrupt_pending(struct ctlr_info *h)
7113 return h->access.intr_pending(h);
7116 static inline long interrupt_not_for_us(struct ctlr_info *h)
7118 return (h->access.intr_pending(h) == 0) ||
7119 (h->interrupts_enabled == 0);
7122 static inline int bad_tag(struct ctlr_info *h, u32 tag_index,
7125 if (unlikely(tag_index >= h->nr_cmds)) {
7126 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag);
7132 static inline void finish_cmd(struct CommandList *c)
7134 dial_up_lockup_detection_on_fw_flash_complete(c->h, c);
7135 if (likely(c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_SCSI
7136 || c->cmd_type == CMD_IOACCEL2))
7137 complete_scsi_command(c);
7138 else if (c->cmd_type == CMD_IOCTL_PEND || c->cmd_type == IOACCEL2_TMF)
7139 complete(c->waiting);
7142 /* process completion of an indexed ("direct lookup") command */
7143 static inline void process_indexed_cmd(struct ctlr_info *h,
7147 struct CommandList *c;
7149 tag_index = raw_tag >> DIRECT_LOOKUP_SHIFT;
7150 if (!bad_tag(h, tag_index, raw_tag)) {
7151 c = h->cmd_pool + tag_index;
7156 /* Some controllers, like p400, will give us one interrupt
7157 * after a soft reset, even if we turned interrupts off.
7158 * Only need to check for this in the hpsa_xxx_discard_completions
7161 static int ignore_bogus_interrupt(struct ctlr_info *h)
7163 if (likely(!reset_devices))
7166 if (likely(h->interrupts_enabled))
7169 dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled "
7170 "(known firmware bug.) Ignoring.\n");
7176 * Convert &h->q[x] (passed to interrupt handlers) back to h.
7177 * Relies on (h-q[x] == x) being true for x such that
7178 * 0 <= x < MAX_REPLY_QUEUES.
7180 static struct ctlr_info *queue_to_hba(u8 *queue)
7182 return container_of((queue - *queue), struct ctlr_info, q[0]);
7185 static irqreturn_t hpsa_intx_discard_completions(int irq, void *queue)
7187 struct ctlr_info *h = queue_to_hba(queue);
7188 u8 q = *(u8 *) queue;
7191 if (ignore_bogus_interrupt(h))
7194 if (interrupt_not_for_us(h))
7196 h->last_intr_timestamp = get_jiffies_64();
7197 while (interrupt_pending(h)) {
7198 raw_tag = get_next_completion(h, q);
7199 while (raw_tag != FIFO_EMPTY)
7200 raw_tag = next_command(h, q);
7205 static irqreturn_t hpsa_msix_discard_completions(int irq, void *queue)
7207 struct ctlr_info *h = queue_to_hba(queue);
7209 u8 q = *(u8 *) queue;
7211 if (ignore_bogus_interrupt(h))
7214 h->last_intr_timestamp = get_jiffies_64();
7215 raw_tag = get_next_completion(h, q);
7216 while (raw_tag != FIFO_EMPTY)
7217 raw_tag = next_command(h, q);
7221 static irqreturn_t do_hpsa_intr_intx(int irq, void *queue)
7223 struct ctlr_info *h = queue_to_hba((u8 *) queue);
7225 u8 q = *(u8 *) queue;
7227 if (interrupt_not_for_us(h))
7229 h->last_intr_timestamp = get_jiffies_64();
7230 while (interrupt_pending(h)) {
7231 raw_tag = get_next_completion(h, q);
7232 while (raw_tag != FIFO_EMPTY) {
7233 process_indexed_cmd(h, raw_tag);
7234 raw_tag = next_command(h, q);
7240 static irqreturn_t do_hpsa_intr_msi(int irq, void *queue)
7242 struct ctlr_info *h = queue_to_hba(queue);
7244 u8 q = *(u8 *) queue;
7246 h->last_intr_timestamp = get_jiffies_64();
7247 raw_tag = get_next_completion(h, q);
7248 while (raw_tag != FIFO_EMPTY) {
7249 process_indexed_cmd(h, raw_tag);
7250 raw_tag = next_command(h, q);
7255 /* Send a message CDB to the firmware. Careful, this only works
7256 * in simple mode, not performant mode due to the tag lookup.
7257 * We only ever use this immediately after a controller reset.
7259 static int hpsa_message(struct pci_dev *pdev, unsigned char opcode,
7263 struct CommandListHeader CommandHeader;
7264 struct RequestBlock Request;
7265 struct ErrDescriptor ErrorDescriptor;
7267 struct Command *cmd;
7268 static const size_t cmd_sz = sizeof(*cmd) +
7269 sizeof(cmd->ErrorDescriptor);
7273 void __iomem *vaddr;
7276 vaddr = pci_ioremap_bar(pdev, 0);
7280 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
7281 * CCISS commands, so they must be allocated from the lower 4GiB of
7284 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
7290 cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64);
7296 /* This must fit, because of the 32-bit consistent DMA mask. Also,
7297 * although there's no guarantee, we assume that the address is at
7298 * least 4-byte aligned (most likely, it's page-aligned).
7300 paddr32 = cpu_to_le32(paddr64);
7302 cmd->CommandHeader.ReplyQueue = 0;
7303 cmd->CommandHeader.SGList = 0;
7304 cmd->CommandHeader.SGTotal = cpu_to_le16(0);
7305 cmd->CommandHeader.tag = cpu_to_le64(paddr64);
7306 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);
7308 cmd->Request.CDBLen = 16;
7309 cmd->Request.type_attr_dir =
7310 TYPE_ATTR_DIR(TYPE_MSG, ATTR_HEADOFQUEUE, XFER_NONE);
7311 cmd->Request.Timeout = 0; /* Don't time out */
7312 cmd->Request.CDB[0] = opcode;
7313 cmd->Request.CDB[1] = type;
7314 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */
7315 cmd->ErrorDescriptor.Addr =
7316 cpu_to_le64((le32_to_cpu(paddr32) + sizeof(*cmd)));
7317 cmd->ErrorDescriptor.Len = cpu_to_le32(sizeof(struct ErrorInfo));
7319 writel(le32_to_cpu(paddr32), vaddr + SA5_REQUEST_PORT_OFFSET);
7321 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) {
7322 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
7323 if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr64)
7325 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS);
7330 /* we leak the DMA buffer here ... no choice since the controller could
7331 * still complete the command.
7333 if (i == HPSA_MSG_SEND_RETRY_LIMIT) {
7334 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n",
7339 pci_free_consistent(pdev, cmd_sz, cmd, paddr64);
7341 if (tag & HPSA_ERROR_BIT) {
7342 dev_err(&pdev->dev, "controller message %02x:%02x failed\n",
7347 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n",
7352 #define hpsa_noop(p) hpsa_message(p, 3, 0)
7354 static int hpsa_controller_hard_reset(struct pci_dev *pdev,
7355 void __iomem *vaddr, u32 use_doorbell)
7359 /* For everything after the P600, the PCI power state method
7360 * of resetting the controller doesn't work, so we have this
7361 * other way using the doorbell register.
7363 dev_info(&pdev->dev, "using doorbell to reset controller\n");
7364 writel(use_doorbell, vaddr + SA5_DOORBELL);
7366 /* PMC hardware guys tell us we need a 10 second delay after
7367 * doorbell reset and before any attempt to talk to the board
7368 * at all to ensure that this actually works and doesn't fall
7369 * over in some weird corner cases.
7372 } else { /* Try to do it the PCI power state way */
7374 /* Quoting from the Open CISS Specification: "The Power
7375 * Management Control/Status Register (CSR) controls the power
7376 * state of the device. The normal operating state is D0,
7377 * CSR=00h. The software off state is D3, CSR=03h. To reset
7378 * the controller, place the interface device in D3 then to D0,
7379 * this causes a secondary PCI reset which will reset the
7384 dev_info(&pdev->dev, "using PCI PM to reset controller\n");
7386 /* enter the D3hot power management state */
7387 rc = pci_set_power_state(pdev, PCI_D3hot);
7393 /* enter the D0 power management state */
7394 rc = pci_set_power_state(pdev, PCI_D0);
7399 * The P600 requires a small delay when changing states.
7400 * Otherwise we may think the board did not reset and we bail.
7401 * This for kdump only and is particular to the P600.
7408 static void init_driver_version(char *driver_version, int len)
7410 memset(driver_version, 0, len);
7411 strncpy(driver_version, HPSA " " HPSA_DRIVER_VERSION, len - 1);
7414 static int write_driver_ver_to_cfgtable(struct CfgTable __iomem *cfgtable)
7416 char *driver_version;
7417 int i, size = sizeof(cfgtable->driver_version);
7419 driver_version = kmalloc(size, GFP_KERNEL);
7420 if (!driver_version)
7423 init_driver_version(driver_version, size);
7424 for (i = 0; i < size; i++)
7425 writeb(driver_version[i], &cfgtable->driver_version[i]);
7426 kfree(driver_version);
7430 static void read_driver_ver_from_cfgtable(struct CfgTable __iomem *cfgtable,
7431 unsigned char *driver_ver)
7435 for (i = 0; i < sizeof(cfgtable->driver_version); i++)
7436 driver_ver[i] = readb(&cfgtable->driver_version[i]);
7439 static int controller_reset_failed(struct CfgTable __iomem *cfgtable)
7442 char *driver_ver, *old_driver_ver;
7443 int rc, size = sizeof(cfgtable->driver_version);
7445 old_driver_ver = kmalloc(2 * size, GFP_KERNEL);
7446 if (!old_driver_ver)
7448 driver_ver = old_driver_ver + size;
7450 /* After a reset, the 32 bytes of "driver version" in the cfgtable
7451 * should have been changed, otherwise we know the reset failed.
7453 init_driver_version(old_driver_ver, size);
7454 read_driver_ver_from_cfgtable(cfgtable, driver_ver);
7455 rc = !memcmp(driver_ver, old_driver_ver, size);
7456 kfree(old_driver_ver);
7459 /* This does a hard reset of the controller using PCI power management
7460 * states or the using the doorbell register.
7462 static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev, u32 board_id)
7466 u64 cfg_base_addr_index;
7467 void __iomem *vaddr;
7468 unsigned long paddr;
7469 u32 misc_fw_support;
7471 struct CfgTable __iomem *cfgtable;
7473 u16 command_register;
7475 /* For controllers as old as the P600, this is very nearly
7478 * pci_save_state(pci_dev);
7479 * pci_set_power_state(pci_dev, PCI_D3hot);
7480 * pci_set_power_state(pci_dev, PCI_D0);
7481 * pci_restore_state(pci_dev);
7483 * For controllers newer than the P600, the pci power state
7484 * method of resetting doesn't work so we have another way
7485 * using the doorbell register.
7488 if (!ctlr_is_resettable(board_id)) {
7489 dev_warn(&pdev->dev, "Controller not resettable\n");
7493 /* if controller is soft- but not hard resettable... */
7494 if (!ctlr_is_hard_resettable(board_id))
7495 return -ENOTSUPP; /* try soft reset later. */
7497 /* Save the PCI command register */
7498 pci_read_config_word(pdev, 4, &command_register);
7499 pci_save_state(pdev);
7501 /* find the first memory BAR, so we can find the cfg table */
7502 rc = hpsa_pci_find_memory_BAR(pdev, &paddr);
7505 vaddr = remap_pci_mem(paddr, 0x250);
7509 /* find cfgtable in order to check if reset via doorbell is supported */
7510 rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr,
7511 &cfg_base_addr_index, &cfg_offset);
7514 cfgtable = remap_pci_mem(pci_resource_start(pdev,
7515 cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable));
7520 rc = write_driver_ver_to_cfgtable(cfgtable);
7522 goto unmap_cfgtable;
7524 /* If reset via doorbell register is supported, use that.
7525 * There are two such methods. Favor the newest method.
7527 misc_fw_support = readl(&cfgtable->misc_fw_support);
7528 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2;
7530 use_doorbell = DOORBELL_CTLR_RESET2;
7532 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET;
7534 dev_warn(&pdev->dev,
7535 "Soft reset not supported. Firmware update is required.\n");
7536 rc = -ENOTSUPP; /* try soft reset */
7537 goto unmap_cfgtable;
7541 rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell);
7543 goto unmap_cfgtable;
7545 pci_restore_state(pdev);
7546 pci_write_config_word(pdev, 4, command_register);
7548 /* Some devices (notably the HP Smart Array 5i Controller)
7549 need a little pause here */
7550 msleep(HPSA_POST_RESET_PAUSE_MSECS);
7552 rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY);
7554 dev_warn(&pdev->dev,
7555 "Failed waiting for board to become ready after hard reset\n");
7556 goto unmap_cfgtable;
7559 rc = controller_reset_failed(vaddr);
7561 goto unmap_cfgtable;
7563 dev_warn(&pdev->dev, "Unable to successfully reset "
7564 "controller. Will try soft reset.\n");
7567 dev_info(&pdev->dev, "board ready after hard reset.\n");
7579 * We cannot read the structure directly, for portability we must use
7581 * This is for debug only.
7583 static void print_cfg_table(struct device *dev, struct CfgTable __iomem *tb)
7589 dev_info(dev, "Controller Configuration information\n");
7590 dev_info(dev, "------------------------------------\n");
7591 for (i = 0; i < 4; i++)
7592 temp_name[i] = readb(&(tb->Signature[i]));
7593 temp_name[4] = '\0';
7594 dev_info(dev, " Signature = %s\n", temp_name);
7595 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence)));
7596 dev_info(dev, " Transport methods supported = 0x%x\n",
7597 readl(&(tb->TransportSupport)));
7598 dev_info(dev, " Transport methods active = 0x%x\n",
7599 readl(&(tb->TransportActive)));
7600 dev_info(dev, " Requested transport Method = 0x%x\n",
7601 readl(&(tb->HostWrite.TransportRequest)));
7602 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n",
7603 readl(&(tb->HostWrite.CoalIntDelay)));
7604 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n",
7605 readl(&(tb->HostWrite.CoalIntCount)));
7606 dev_info(dev, " Max outstanding commands = %d\n",
7607 readl(&(tb->CmdsOutMax)));
7608 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
7609 for (i = 0; i < 16; i++)
7610 temp_name[i] = readb(&(tb->ServerName[i]));
7611 temp_name[16] = '\0';
7612 dev_info(dev, " Server Name = %s\n", temp_name);
7613 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n",
7614 readl(&(tb->HeartBeat)));
7615 #endif /* HPSA_DEBUG */
7618 static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
7620 int i, offset, mem_type, bar_type;
7622 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
7625 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
7626 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
7627 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
7630 mem_type = pci_resource_flags(pdev, i) &
7631 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
7633 case PCI_BASE_ADDRESS_MEM_TYPE_32:
7634 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
7635 offset += 4; /* 32 bit */
7637 case PCI_BASE_ADDRESS_MEM_TYPE_64:
7640 default: /* reserved in PCI 2.2 */
7641 dev_warn(&pdev->dev,
7642 "base address is invalid\n");
7647 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
7653 static void hpsa_disable_interrupt_mode(struct ctlr_info *h)
7655 if (h->msix_vector) {
7656 if (h->pdev->msix_enabled)
7657 pci_disable_msix(h->pdev);
7659 } else if (h->msi_vector) {
7660 if (h->pdev->msi_enabled)
7661 pci_disable_msi(h->pdev);
7666 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
7667 * controllers that are capable. If not, we use legacy INTx mode.
7669 static void hpsa_interrupt_mode(struct ctlr_info *h)
7671 #ifdef CONFIG_PCI_MSI
7673 struct msix_entry hpsa_msix_entries[MAX_REPLY_QUEUES];
7675 for (i = 0; i < MAX_REPLY_QUEUES; i++) {
7676 hpsa_msix_entries[i].vector = 0;
7677 hpsa_msix_entries[i].entry = i;
7680 /* Some boards advertise MSI but don't really support it */
7681 if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) ||
7682 (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11))
7683 goto default_int_mode;
7684 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) {
7685 dev_info(&h->pdev->dev, "MSI-X capable controller\n");
7686 h->msix_vector = MAX_REPLY_QUEUES;
7687 if (h->msix_vector > num_online_cpus())
7688 h->msix_vector = num_online_cpus();
7689 err = pci_enable_msix_range(h->pdev, hpsa_msix_entries,
7692 dev_warn(&h->pdev->dev, "MSI-X init failed %d\n", err);
7694 goto single_msi_mode;
7695 } else if (err < h->msix_vector) {
7696 dev_warn(&h->pdev->dev, "only %d MSI-X vectors "
7697 "available\n", err);
7699 h->msix_vector = err;
7700 for (i = 0; i < h->msix_vector; i++)
7701 h->intr[i] = hpsa_msix_entries[i].vector;
7705 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) {
7706 dev_info(&h->pdev->dev, "MSI capable controller\n");
7707 if (!pci_enable_msi(h->pdev))
7710 dev_warn(&h->pdev->dev, "MSI init failed\n");
7713 #endif /* CONFIG_PCI_MSI */
7714 /* if we get here we're going to use the default interrupt mode */
7715 h->intr[h->intr_mode] = h->pdev->irq;
7718 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
7721 u32 subsystem_vendor_id, subsystem_device_id;
7723 subsystem_vendor_id = pdev->subsystem_vendor;
7724 subsystem_device_id = pdev->subsystem_device;
7725 *board_id = ((subsystem_device_id << 16) & 0xffff0000) |
7726 subsystem_vendor_id;
7728 for (i = 0; i < ARRAY_SIZE(products); i++)
7729 if (*board_id == products[i].board_id)
7732 if ((subsystem_vendor_id != PCI_VENDOR_ID_HP &&
7733 subsystem_vendor_id != PCI_VENDOR_ID_COMPAQ) ||
7735 dev_warn(&pdev->dev, "unrecognized board ID: "
7736 "0x%08x, ignoring.\n", *board_id);
7739 return ARRAY_SIZE(products) - 1; /* generic unknown smart array */
7742 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
7743 unsigned long *memory_bar)
7747 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++)
7748 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
7749 /* addressing mode bits already removed */
7750 *memory_bar = pci_resource_start(pdev, i);
7751 dev_dbg(&pdev->dev, "memory BAR = %lx\n",
7755 dev_warn(&pdev->dev, "no memory BAR found\n");
7759 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
7765 iterations = HPSA_BOARD_READY_ITERATIONS;
7767 iterations = HPSA_BOARD_NOT_READY_ITERATIONS;
7769 for (i = 0; i < iterations; i++) {
7770 scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET);
7771 if (wait_for_ready) {
7772 if (scratchpad == HPSA_FIRMWARE_READY)
7775 if (scratchpad != HPSA_FIRMWARE_READY)
7778 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
7780 dev_warn(&pdev->dev, "board not ready, timed out.\n");
7784 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
7785 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
7788 *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET);
7789 *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET);
7790 *cfg_base_addr &= (u32) 0x0000ffff;
7791 *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr);
7792 if (*cfg_base_addr_index == -1) {
7793 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n");
7799 static void hpsa_free_cfgtables(struct ctlr_info *h)
7801 if (h->transtable) {
7802 iounmap(h->transtable);
7803 h->transtable = NULL;
7806 iounmap(h->cfgtable);
7811 /* Find and map CISS config table and transfer table
7812 + * several items must be unmapped (freed) later
7814 static int hpsa_find_cfgtables(struct ctlr_info *h)
7818 u64 cfg_base_addr_index;
7822 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
7823 &cfg_base_addr_index, &cfg_offset);
7826 h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
7827 cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable));
7829 dev_err(&h->pdev->dev, "Failed mapping cfgtable\n");
7832 rc = write_driver_ver_to_cfgtable(h->cfgtable);
7835 /* Find performant mode table. */
7836 trans_offset = readl(&h->cfgtable->TransMethodOffset);
7837 h->transtable = remap_pci_mem(pci_resource_start(h->pdev,
7838 cfg_base_addr_index)+cfg_offset+trans_offset,
7839 sizeof(*h->transtable));
7840 if (!h->transtable) {
7841 dev_err(&h->pdev->dev, "Failed mapping transfer table\n");
7842 hpsa_free_cfgtables(h);
7848 static void hpsa_get_max_perf_mode_cmds(struct ctlr_info *h)
7850 #define MIN_MAX_COMMANDS 16
7851 BUILD_BUG_ON(MIN_MAX_COMMANDS <= HPSA_NRESERVED_CMDS);
7853 h->max_commands = readl(&h->cfgtable->MaxPerformantModeCommands);
7855 /* Limit commands in memory limited kdump scenario. */
7856 if (reset_devices && h->max_commands > 32)
7857 h->max_commands = 32;
7859 if (h->max_commands < MIN_MAX_COMMANDS) {
7860 dev_warn(&h->pdev->dev,
7861 "Controller reports max supported commands of %d Using %d instead. Ensure that firmware is up to date.\n",
7864 h->max_commands = MIN_MAX_COMMANDS;
7868 /* If the controller reports that the total max sg entries is greater than 512,
7869 * then we know that chained SG blocks work. (Original smart arrays did not
7870 * support chained SG blocks and would return zero for max sg entries.)
7872 static int hpsa_supports_chained_sg_blocks(struct ctlr_info *h)
7874 return h->maxsgentries > 512;
7877 /* Interrogate the hardware for some limits:
7878 * max commands, max SG elements without chaining, and with chaining,
7879 * SG chain block size, etc.
7881 static void hpsa_find_board_params(struct ctlr_info *h)
7883 hpsa_get_max_perf_mode_cmds(h);
7884 h->nr_cmds = h->max_commands;
7885 h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements));
7886 h->fw_support = readl(&(h->cfgtable->misc_fw_support));
7887 if (hpsa_supports_chained_sg_blocks(h)) {
7888 /* Limit in-command s/g elements to 32 save dma'able memory. */
7889 h->max_cmd_sg_entries = 32;
7890 h->chainsize = h->maxsgentries - h->max_cmd_sg_entries;
7891 h->maxsgentries--; /* save one for chain pointer */
7894 * Original smart arrays supported at most 31 s/g entries
7895 * embedded inline in the command (trying to use more
7896 * would lock up the controller)
7898 h->max_cmd_sg_entries = 31;
7899 h->maxsgentries = 31; /* default to traditional values */
7903 /* Find out what task management functions are supported and cache */
7904 h->TMFSupportFlags = readl(&(h->cfgtable->TMFSupportFlags));
7905 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags))
7906 dev_warn(&h->pdev->dev, "Physical aborts not supported\n");
7907 if (!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
7908 dev_warn(&h->pdev->dev, "Logical aborts not supported\n");
7909 if (!(HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags))
7910 dev_warn(&h->pdev->dev, "HP SSD Smart Path aborts not supported\n");
7913 static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)
7915 if (!check_signature(h->cfgtable->Signature, "CISS", 4)) {
7916 dev_err(&h->pdev->dev, "not a valid CISS config table\n");
7922 static inline void hpsa_set_driver_support_bits(struct ctlr_info *h)
7926 driver_support = readl(&(h->cfgtable->driver_support));
7927 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
7929 driver_support |= ENABLE_SCSI_PREFETCH;
7931 driver_support |= ENABLE_UNIT_ATTN;
7932 writel(driver_support, &(h->cfgtable->driver_support));
7935 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
7936 * in a prefetch beyond physical memory.
7938 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h)
7942 if (h->board_id != 0x3225103C)
7944 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
7945 dma_prefetch |= 0x8000;
7946 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
7949 static int hpsa_wait_for_clear_event_notify_ack(struct ctlr_info *h)
7953 unsigned long flags;
7954 /* wait until the clear_event_notify bit 6 is cleared by controller. */
7955 for (i = 0; i < MAX_CLEAR_EVENT_WAIT; i++) {
7956 spin_lock_irqsave(&h->lock, flags);
7957 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7958 spin_unlock_irqrestore(&h->lock, flags);
7959 if (!(doorbell_value & DOORBELL_CLEAR_EVENTS))
7961 /* delay and try again */
7962 msleep(CLEAR_EVENT_WAIT_INTERVAL);
7969 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h)
7973 unsigned long flags;
7975 /* under certain very rare conditions, this can take awhile.
7976 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
7977 * as we enter this code.)
7979 for (i = 0; i < MAX_MODE_CHANGE_WAIT; i++) {
7980 if (h->remove_in_progress)
7982 spin_lock_irqsave(&h->lock, flags);
7983 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7984 spin_unlock_irqrestore(&h->lock, flags);
7985 if (!(doorbell_value & CFGTBL_ChangeReq))
7987 /* delay and try again */
7988 msleep(MODE_CHANGE_WAIT_INTERVAL);
7995 /* return -ENODEV or other reason on error, 0 on success */
7996 static int hpsa_enter_simple_mode(struct ctlr_info *h)
8000 trans_support = readl(&(h->cfgtable->TransportSupport));
8001 if (!(trans_support & SIMPLE_MODE))
8004 h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
8006 /* Update the field, and then ring the doorbell */
8007 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
8008 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
8009 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
8010 if (hpsa_wait_for_mode_change_ack(h))
8012 print_cfg_table(&h->pdev->dev, h->cfgtable);
8013 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
8015 h->transMethod = CFGTBL_Trans_Simple;
8018 dev_err(&h->pdev->dev, "failed to enter simple mode\n");
8022 /* free items allocated or mapped by hpsa_pci_init */
8023 static void hpsa_free_pci_init(struct ctlr_info *h)
8025 hpsa_free_cfgtables(h); /* pci_init 4 */
8026 iounmap(h->vaddr); /* pci_init 3 */
8028 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
8030 * call pci_disable_device before pci_release_regions per
8031 * Documentation/PCI/pci.txt
8033 pci_disable_device(h->pdev); /* pci_init 1 */
8034 pci_release_regions(h->pdev); /* pci_init 2 */
8037 /* several items must be freed later */
8038 static int hpsa_pci_init(struct ctlr_info *h)
8040 int prod_index, err;
8042 prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id);
8045 h->product_name = products[prod_index].product_name;
8046 h->access = *(products[prod_index].access);
8048 h->needs_abort_tags_swizzled =
8049 ctlr_needs_abort_tags_swizzled(h->board_id);
8051 pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S |
8052 PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
8054 err = pci_enable_device(h->pdev);
8056 dev_err(&h->pdev->dev, "failed to enable PCI device\n");
8057 pci_disable_device(h->pdev);
8061 err = pci_request_regions(h->pdev, HPSA);
8063 dev_err(&h->pdev->dev,
8064 "failed to obtain PCI resources\n");
8065 pci_disable_device(h->pdev);
8069 pci_set_master(h->pdev);
8071 hpsa_interrupt_mode(h);
8072 err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr);
8074 goto clean2; /* intmode+region, pci */
8075 h->vaddr = remap_pci_mem(h->paddr, 0x250);
8077 dev_err(&h->pdev->dev, "failed to remap PCI mem\n");
8079 goto clean2; /* intmode+region, pci */
8081 err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
8083 goto clean3; /* vaddr, intmode+region, pci */
8084 err = hpsa_find_cfgtables(h);
8086 goto clean3; /* vaddr, intmode+region, pci */
8087 hpsa_find_board_params(h);
8089 if (!hpsa_CISS_signature_present(h)) {
8091 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
8093 hpsa_set_driver_support_bits(h);
8094 hpsa_p600_dma_prefetch_quirk(h);
8095 err = hpsa_enter_simple_mode(h);
8097 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
8100 clean4: /* cfgtables, vaddr, intmode+region, pci */
8101 hpsa_free_cfgtables(h);
8102 clean3: /* vaddr, intmode+region, pci */
8105 clean2: /* intmode+region, pci */
8106 hpsa_disable_interrupt_mode(h);
8108 * call pci_disable_device before pci_release_regions per
8109 * Documentation/PCI/pci.txt
8111 pci_disable_device(h->pdev);
8112 pci_release_regions(h->pdev);
8116 static void hpsa_hba_inquiry(struct ctlr_info *h)
8120 #define HBA_INQUIRY_BYTE_COUNT 64
8121 h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL);
8122 if (!h->hba_inquiry_data)
8124 rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0,
8125 h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT);
8127 kfree(h->hba_inquiry_data);
8128 h->hba_inquiry_data = NULL;
8132 static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id)
8135 void __iomem *vaddr;
8140 /* kdump kernel is loading, we don't know in which state is
8141 * the pci interface. The dev->enable_cnt is equal zero
8142 * so we call enable+disable, wait a while and switch it on.
8144 rc = pci_enable_device(pdev);
8146 dev_warn(&pdev->dev, "Failed to enable PCI device\n");
8149 pci_disable_device(pdev);
8150 msleep(260); /* a randomly chosen number */
8151 rc = pci_enable_device(pdev);
8153 dev_warn(&pdev->dev, "failed to enable device.\n");
8157 pci_set_master(pdev);
8159 vaddr = pci_ioremap_bar(pdev, 0);
8160 if (vaddr == NULL) {
8164 writel(SA5_INTR_OFF, vaddr + SA5_REPLY_INTR_MASK_OFFSET);
8167 /* Reset the controller with a PCI power-cycle or via doorbell */
8168 rc = hpsa_kdump_hard_reset_controller(pdev, board_id);
8170 /* -ENOTSUPP here means we cannot reset the controller
8171 * but it's already (and still) up and running in
8172 * "performant mode". Or, it might be 640x, which can't reset
8173 * due to concerns about shared bbwc between 6402/6404 pair.
8178 /* Now try to get the controller to respond to a no-op */
8179 dev_info(&pdev->dev, "Waiting for controller to respond to no-op\n");
8180 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) {
8181 if (hpsa_noop(pdev) == 0)
8184 dev_warn(&pdev->dev, "no-op failed%s\n",
8185 (i < 11 ? "; re-trying" : ""));
8190 pci_disable_device(pdev);
8194 static void hpsa_free_cmd_pool(struct ctlr_info *h)
8196 kfree(h->cmd_pool_bits);
8197 h->cmd_pool_bits = NULL;
8199 pci_free_consistent(h->pdev,
8200 h->nr_cmds * sizeof(struct CommandList),
8202 h->cmd_pool_dhandle);
8204 h->cmd_pool_dhandle = 0;
8206 if (h->errinfo_pool) {
8207 pci_free_consistent(h->pdev,
8208 h->nr_cmds * sizeof(struct ErrorInfo),
8210 h->errinfo_pool_dhandle);
8211 h->errinfo_pool = NULL;
8212 h->errinfo_pool_dhandle = 0;
8216 static int hpsa_alloc_cmd_pool(struct ctlr_info *h)
8218 h->cmd_pool_bits = kzalloc(
8219 DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) *
8220 sizeof(unsigned long), GFP_KERNEL);
8221 h->cmd_pool = pci_alloc_consistent(h->pdev,
8222 h->nr_cmds * sizeof(*h->cmd_pool),
8223 &(h->cmd_pool_dhandle));
8224 h->errinfo_pool = pci_alloc_consistent(h->pdev,
8225 h->nr_cmds * sizeof(*h->errinfo_pool),
8226 &(h->errinfo_pool_dhandle));
8227 if ((h->cmd_pool_bits == NULL)
8228 || (h->cmd_pool == NULL)
8229 || (h->errinfo_pool == NULL)) {
8230 dev_err(&h->pdev->dev, "out of memory in %s", __func__);
8233 hpsa_preinitialize_commands(h);
8236 hpsa_free_cmd_pool(h);
8240 static void hpsa_irq_affinity_hints(struct ctlr_info *h)
8244 cpu = cpumask_first(cpu_online_mask);
8245 for (i = 0; i < h->msix_vector; i++) {
8246 irq_set_affinity_hint(h->intr[i], get_cpu_mask(cpu));
8247 cpu = cpumask_next(cpu, cpu_online_mask);
8251 /* clear affinity hints and free MSI-X, MSI, or legacy INTx vectors */
8252 static void hpsa_free_irqs(struct ctlr_info *h)
8256 if (!h->msix_vector || h->intr_mode != PERF_MODE_INT) {
8257 /* Single reply queue, only one irq to free */
8259 irq_set_affinity_hint(h->intr[i], NULL);
8260 free_irq(h->intr[i], &h->q[i]);
8265 for (i = 0; i < h->msix_vector; i++) {
8266 irq_set_affinity_hint(h->intr[i], NULL);
8267 free_irq(h->intr[i], &h->q[i]);
8270 for (; i < MAX_REPLY_QUEUES; i++)
8274 /* returns 0 on success; cleans up and returns -Enn on error */
8275 static int hpsa_request_irqs(struct ctlr_info *h,
8276 irqreturn_t (*msixhandler)(int, void *),
8277 irqreturn_t (*intxhandler)(int, void *))
8282 * initialize h->q[x] = x so that interrupt handlers know which
8285 for (i = 0; i < MAX_REPLY_QUEUES; i++)
8288 if (h->intr_mode == PERF_MODE_INT && h->msix_vector > 0) {
8289 /* If performant mode and MSI-X, use multiple reply queues */
8290 for (i = 0; i < h->msix_vector; i++) {
8291 sprintf(h->intrname[i], "%s-msix%d", h->devname, i);
8292 rc = request_irq(h->intr[i], msixhandler,
8298 dev_err(&h->pdev->dev,
8299 "failed to get irq %d for %s\n",
8300 h->intr[i], h->devname);
8301 for (j = 0; j < i; j++) {
8302 free_irq(h->intr[j], &h->q[j]);
8305 for (; j < MAX_REPLY_QUEUES; j++)
8310 hpsa_irq_affinity_hints(h);
8312 /* Use single reply pool */
8313 if (h->msix_vector > 0 || h->msi_vector) {
8315 sprintf(h->intrname[h->intr_mode],
8316 "%s-msix", h->devname);
8318 sprintf(h->intrname[h->intr_mode],
8319 "%s-msi", h->devname);
8320 rc = request_irq(h->intr[h->intr_mode],
8322 h->intrname[h->intr_mode],
8323 &h->q[h->intr_mode]);
8325 sprintf(h->intrname[h->intr_mode],
8326 "%s-intx", h->devname);
8327 rc = request_irq(h->intr[h->intr_mode],
8328 intxhandler, IRQF_SHARED,
8329 h->intrname[h->intr_mode],
8330 &h->q[h->intr_mode]);
8332 irq_set_affinity_hint(h->intr[h->intr_mode], NULL);
8335 dev_err(&h->pdev->dev, "failed to get irq %d for %s\n",
8336 h->intr[h->intr_mode], h->devname);
8343 static int hpsa_kdump_soft_reset(struct ctlr_info *h)
8346 hpsa_send_host_reset(h, RAID_CTLR_LUNID, HPSA_RESET_TYPE_CONTROLLER);
8348 dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n");
8349 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY);
8351 dev_warn(&h->pdev->dev, "Soft reset had no effect.\n");
8355 dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n");
8356 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
8358 dev_warn(&h->pdev->dev, "Board failed to become ready "
8359 "after soft reset.\n");
8366 static void hpsa_free_reply_queues(struct ctlr_info *h)
8370 for (i = 0; i < h->nreply_queues; i++) {
8371 if (!h->reply_queue[i].head)
8373 pci_free_consistent(h->pdev,
8374 h->reply_queue_size,
8375 h->reply_queue[i].head,
8376 h->reply_queue[i].busaddr);
8377 h->reply_queue[i].head = NULL;
8378 h->reply_queue[i].busaddr = 0;
8380 h->reply_queue_size = 0;
8383 static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h)
8385 hpsa_free_performant_mode(h); /* init_one 7 */
8386 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
8387 hpsa_free_cmd_pool(h); /* init_one 5 */
8388 hpsa_free_irqs(h); /* init_one 4 */
8389 scsi_host_put(h->scsi_host); /* init_one 3 */
8390 h->scsi_host = NULL; /* init_one 3 */
8391 hpsa_free_pci_init(h); /* init_one 2_5 */
8392 free_percpu(h->lockup_detected); /* init_one 2 */
8393 h->lockup_detected = NULL; /* init_one 2 */
8394 if (h->resubmit_wq) {
8395 destroy_workqueue(h->resubmit_wq); /* init_one 1 */
8396 h->resubmit_wq = NULL;
8398 if (h->rescan_ctlr_wq) {
8399 destroy_workqueue(h->rescan_ctlr_wq);
8400 h->rescan_ctlr_wq = NULL;
8402 kfree(h); /* init_one 1 */
8405 /* Called when controller lockup detected. */
8406 static void fail_all_outstanding_cmds(struct ctlr_info *h)
8409 struct CommandList *c;
8412 flush_workqueue(h->resubmit_wq); /* ensure all cmds are fully built */
8413 for (i = 0; i < h->nr_cmds; i++) {
8414 c = h->cmd_pool + i;
8415 refcount = atomic_inc_return(&c->refcount);
8417 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
8419 atomic_dec(&h->commands_outstanding);
8424 dev_warn(&h->pdev->dev,
8425 "failed %d commands in fail_all\n", failcount);
8428 static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value)
8432 for_each_online_cpu(cpu) {
8433 u32 *lockup_detected;
8434 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
8435 *lockup_detected = value;
8437 wmb(); /* be sure the per-cpu variables are out to memory */
8440 static void controller_lockup_detected(struct ctlr_info *h)
8442 unsigned long flags;
8443 u32 lockup_detected;
8445 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8446 spin_lock_irqsave(&h->lock, flags);
8447 lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
8448 if (!lockup_detected) {
8449 /* no heartbeat, but controller gave us a zero. */
8450 dev_warn(&h->pdev->dev,
8451 "lockup detected after %d but scratchpad register is zero\n",
8452 h->heartbeat_sample_interval / HZ);
8453 lockup_detected = 0xffffffff;
8455 set_lockup_detected_for_all_cpus(h, lockup_detected);
8456 spin_unlock_irqrestore(&h->lock, flags);
8457 dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x after %d\n",
8458 lockup_detected, h->heartbeat_sample_interval / HZ);
8459 pci_disable_device(h->pdev);
8460 fail_all_outstanding_cmds(h);
8463 static int detect_controller_lockup(struct ctlr_info *h)
8467 unsigned long flags;
8469 now = get_jiffies_64();
8470 /* If we've received an interrupt recently, we're ok. */
8471 if (time_after64(h->last_intr_timestamp +
8472 (h->heartbeat_sample_interval), now))
8476 * If we've already checked the heartbeat recently, we're ok.
8477 * This could happen if someone sends us a signal. We
8478 * otherwise don't care about signals in this thread.
8480 if (time_after64(h->last_heartbeat_timestamp +
8481 (h->heartbeat_sample_interval), now))
8484 /* If heartbeat has not changed since we last looked, we're not ok. */
8485 spin_lock_irqsave(&h->lock, flags);
8486 heartbeat = readl(&h->cfgtable->HeartBeat);
8487 spin_unlock_irqrestore(&h->lock, flags);
8488 if (h->last_heartbeat == heartbeat) {
8489 controller_lockup_detected(h);
8494 h->last_heartbeat = heartbeat;
8495 h->last_heartbeat_timestamp = now;
8499 static void hpsa_ack_ctlr_events(struct ctlr_info *h)
8504 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
8507 /* Ask the controller to clear the events we're handling. */
8508 if ((h->transMethod & (CFGTBL_Trans_io_accel1
8509 | CFGTBL_Trans_io_accel2)) &&
8510 (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE ||
8511 h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)) {
8513 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE)
8514 event_type = "state change";
8515 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)
8516 event_type = "configuration change";
8517 /* Stop sending new RAID offload reqs via the IO accelerator */
8518 scsi_block_requests(h->scsi_host);
8519 for (i = 0; i < h->ndevices; i++) {
8520 h->dev[i]->offload_enabled = 0;
8521 h->dev[i]->offload_to_be_enabled = 0;
8523 hpsa_drain_accel_commands(h);
8524 /* Set 'accelerator path config change' bit */
8525 dev_warn(&h->pdev->dev,
8526 "Acknowledging event: 0x%08x (HP SSD Smart Path %s)\n",
8527 h->events, event_type);
8528 writel(h->events, &(h->cfgtable->clear_event_notify));
8529 /* Set the "clear event notify field update" bit 6 */
8530 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
8531 /* Wait until ctlr clears 'clear event notify field', bit 6 */
8532 hpsa_wait_for_clear_event_notify_ack(h);
8533 scsi_unblock_requests(h->scsi_host);
8535 /* Acknowledge controller notification events. */
8536 writel(h->events, &(h->cfgtable->clear_event_notify));
8537 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
8538 hpsa_wait_for_clear_event_notify_ack(h);
8540 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
8541 hpsa_wait_for_mode_change_ack(h);
8547 /* Check a register on the controller to see if there are configuration
8548 * changes (added/changed/removed logical drives, etc.) which mean that
8549 * we should rescan the controller for devices.
8550 * Also check flag for driver-initiated rescan.
8552 static int hpsa_ctlr_needs_rescan(struct ctlr_info *h)
8554 if (h->drv_req_rescan) {
8555 h->drv_req_rescan = 0;
8559 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
8562 h->events = readl(&(h->cfgtable->event_notify));
8563 return h->events & RESCAN_REQUIRED_EVENT_BITS;
8567 * Check if any of the offline devices have become ready
8569 static int hpsa_offline_devices_ready(struct ctlr_info *h)
8571 unsigned long flags;
8572 struct offline_device_entry *d;
8573 struct list_head *this, *tmp;
8575 spin_lock_irqsave(&h->offline_device_lock, flags);
8576 list_for_each_safe(this, tmp, &h->offline_device_list) {
8577 d = list_entry(this, struct offline_device_entry,
8579 spin_unlock_irqrestore(&h->offline_device_lock, flags);
8580 if (!hpsa_volume_offline(h, d->scsi3addr)) {
8581 spin_lock_irqsave(&h->offline_device_lock, flags);
8582 list_del(&d->offline_list);
8583 spin_unlock_irqrestore(&h->offline_device_lock, flags);
8586 spin_lock_irqsave(&h->offline_device_lock, flags);
8588 spin_unlock_irqrestore(&h->offline_device_lock, flags);
8592 static int hpsa_luns_changed(struct ctlr_info *h)
8594 int rc = 1; /* assume there are changes */
8595 struct ReportLUNdata *logdev = NULL;
8597 /* if we can't find out if lun data has changed,
8598 * assume that it has.
8601 if (!h->lastlogicals)
8604 logdev = kzalloc(sizeof(*logdev), GFP_KERNEL);
8606 dev_warn(&h->pdev->dev,
8607 "Out of memory, can't track lun changes.\n");
8610 if (hpsa_scsi_do_report_luns(h, 1, logdev, sizeof(*logdev), 0)) {
8611 dev_warn(&h->pdev->dev,
8612 "report luns failed, can't track lun changes.\n");
8615 if (memcmp(logdev, h->lastlogicals, sizeof(*logdev))) {
8616 dev_info(&h->pdev->dev,
8617 "Lun changes detected.\n");
8618 memcpy(h->lastlogicals, logdev, sizeof(*logdev));
8621 rc = 0; /* no changes detected. */
8627 static void hpsa_rescan_ctlr_worker(struct work_struct *work)
8629 unsigned long flags;
8630 struct ctlr_info *h = container_of(to_delayed_work(work),
8631 struct ctlr_info, rescan_ctlr_work);
8634 if (h->remove_in_progress)
8637 if (hpsa_ctlr_needs_rescan(h) || hpsa_offline_devices_ready(h)) {
8638 scsi_host_get(h->scsi_host);
8639 hpsa_ack_ctlr_events(h);
8640 hpsa_scan_start(h->scsi_host);
8641 scsi_host_put(h->scsi_host);
8642 } else if (h->discovery_polling) {
8643 hpsa_disable_rld_caching(h);
8644 if (hpsa_luns_changed(h)) {
8645 struct Scsi_Host *sh = NULL;
8647 dev_info(&h->pdev->dev,
8648 "driver discovery polling rescan.\n");
8649 sh = scsi_host_get(h->scsi_host);
8651 hpsa_scan_start(sh);
8656 spin_lock_irqsave(&h->lock, flags);
8657 if (!h->remove_in_progress)
8658 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
8659 h->heartbeat_sample_interval);
8660 spin_unlock_irqrestore(&h->lock, flags);
8663 static void hpsa_monitor_ctlr_worker(struct work_struct *work)
8665 unsigned long flags;
8666 struct ctlr_info *h = container_of(to_delayed_work(work),
8667 struct ctlr_info, monitor_ctlr_work);
8669 detect_controller_lockup(h);
8670 if (lockup_detected(h))
8673 spin_lock_irqsave(&h->lock, flags);
8674 if (!h->remove_in_progress)
8675 schedule_delayed_work(&h->monitor_ctlr_work,
8676 h->heartbeat_sample_interval);
8677 spin_unlock_irqrestore(&h->lock, flags);
8680 static struct workqueue_struct *hpsa_create_controller_wq(struct ctlr_info *h,
8683 struct workqueue_struct *wq = NULL;
8685 wq = alloc_ordered_workqueue("%s_%d_hpsa", 0, name, h->ctlr);
8687 dev_err(&h->pdev->dev, "failed to create %s workqueue\n", name);
8692 static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
8695 struct ctlr_info *h;
8696 int try_soft_reset = 0;
8697 unsigned long flags;
8700 if (number_of_controllers == 0)
8701 printk(KERN_INFO DRIVER_NAME "\n");
8703 rc = hpsa_lookup_board_id(pdev, &board_id);
8705 dev_warn(&pdev->dev, "Board ID not found\n");
8709 rc = hpsa_init_reset_devices(pdev, board_id);
8711 if (rc != -ENOTSUPP)
8713 /* If the reset fails in a particular way (it has no way to do
8714 * a proper hard reset, so returns -ENOTSUPP) we can try to do
8715 * a soft reset once we get the controller configured up to the
8716 * point that it can accept a command.
8722 reinit_after_soft_reset:
8724 /* Command structures must be aligned on a 32-byte boundary because
8725 * the 5 lower bits of the address are used by the hardware. and by
8726 * the driver. See comments in hpsa.h for more info.
8728 BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT);
8729 h = kzalloc(sizeof(*h), GFP_KERNEL);
8731 dev_err(&pdev->dev, "Failed to allocate controller head\n");
8737 h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT;
8738 INIT_LIST_HEAD(&h->offline_device_list);
8739 spin_lock_init(&h->lock);
8740 spin_lock_init(&h->offline_device_lock);
8741 spin_lock_init(&h->scan_lock);
8742 atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS);
8743 atomic_set(&h->abort_cmds_available, HPSA_CMDS_RESERVED_FOR_ABORTS);
8745 /* Allocate and clear per-cpu variable lockup_detected */
8746 h->lockup_detected = alloc_percpu(u32);
8747 if (!h->lockup_detected) {
8748 dev_err(&h->pdev->dev, "Failed to allocate lockup detector\n");
8750 goto clean1; /* aer/h */
8752 set_lockup_detected_for_all_cpus(h, 0);
8754 rc = hpsa_pci_init(h);
8756 goto clean2; /* lu, aer/h */
8758 /* relies on h-> settings made by hpsa_pci_init, including
8759 * interrupt_mode h->intr */
8760 rc = hpsa_scsi_host_alloc(h);
8762 goto clean2_5; /* pci, lu, aer/h */
8764 sprintf(h->devname, HPSA "%d", h->scsi_host->host_no);
8765 h->ctlr = number_of_controllers;
8766 number_of_controllers++;
8768 /* configure PCI DMA stuff */
8769 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
8773 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8777 dev_err(&pdev->dev, "no suitable DMA available\n");
8778 goto clean3; /* shost, pci, lu, aer/h */
8782 /* make sure the board interrupts are off */
8783 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8785 rc = hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx);
8787 goto clean3; /* shost, pci, lu, aer/h */
8788 rc = hpsa_alloc_cmd_pool(h);
8790 goto clean4; /* irq, shost, pci, lu, aer/h */
8791 rc = hpsa_alloc_sg_chain_blocks(h);
8793 goto clean5; /* cmd, irq, shost, pci, lu, aer/h */
8794 init_waitqueue_head(&h->scan_wait_queue);
8795 init_waitqueue_head(&h->abort_cmd_wait_queue);
8796 init_waitqueue_head(&h->event_sync_wait_queue);
8797 mutex_init(&h->reset_mutex);
8798 h->scan_finished = 1; /* no scan currently in progress */
8800 pci_set_drvdata(pdev, h);
8803 spin_lock_init(&h->devlock);
8804 rc = hpsa_put_ctlr_into_performant_mode(h);
8806 goto clean6; /* sg, cmd, irq, shost, pci, lu, aer/h */
8808 /* create the resubmit workqueue */
8809 h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan");
8810 if (!h->rescan_ctlr_wq) {
8815 h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit");
8816 if (!h->resubmit_wq) {
8818 goto clean7; /* aer/h */
8822 * At this point, the controller is ready to take commands.
8823 * Now, if reset_devices and the hard reset didn't work, try
8824 * the soft reset and see if that works.
8826 if (try_soft_reset) {
8828 /* This is kind of gross. We may or may not get a completion
8829 * from the soft reset command, and if we do, then the value
8830 * from the fifo may or may not be valid. So, we wait 10 secs
8831 * after the reset throwing away any completions we get during
8832 * that time. Unregister the interrupt handler and register
8833 * fake ones to scoop up any residual completions.
8835 spin_lock_irqsave(&h->lock, flags);
8836 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8837 spin_unlock_irqrestore(&h->lock, flags);
8839 rc = hpsa_request_irqs(h, hpsa_msix_discard_completions,
8840 hpsa_intx_discard_completions);
8842 dev_warn(&h->pdev->dev,
8843 "Failed to request_irq after soft reset.\n");
8845 * cannot goto clean7 or free_irqs will be called
8846 * again. Instead, do its work
8848 hpsa_free_performant_mode(h); /* clean7 */
8849 hpsa_free_sg_chain_blocks(h); /* clean6 */
8850 hpsa_free_cmd_pool(h); /* clean5 */
8852 * skip hpsa_free_irqs(h) clean4 since that
8853 * was just called before request_irqs failed
8858 rc = hpsa_kdump_soft_reset(h);
8860 /* Neither hard nor soft reset worked, we're hosed. */
8863 dev_info(&h->pdev->dev, "Board READY.\n");
8864 dev_info(&h->pdev->dev,
8865 "Waiting for stale completions to drain.\n");
8866 h->access.set_intr_mask(h, HPSA_INTR_ON);
8868 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8870 rc = controller_reset_failed(h->cfgtable);
8872 dev_info(&h->pdev->dev,
8873 "Soft reset appears to have failed.\n");
8875 /* since the controller's reset, we have to go back and re-init
8876 * everything. Easiest to just forget what we've done and do it
8879 hpsa_undo_allocations_after_kdump_soft_reset(h);
8882 /* don't goto clean, we already unallocated */
8885 goto reinit_after_soft_reset;
8888 /* Enable Accelerated IO path at driver layer */
8889 h->acciopath_status = 1;
8890 /* Disable discovery polling.*/
8891 h->discovery_polling = 0;
8894 /* Turn the interrupts on so we can service requests */
8895 h->access.set_intr_mask(h, HPSA_INTR_ON);
8897 hpsa_hba_inquiry(h);
8899 h->lastlogicals = kzalloc(sizeof(*(h->lastlogicals)), GFP_KERNEL);
8900 if (!h->lastlogicals)
8901 dev_info(&h->pdev->dev,
8902 "Can't track change to report lun data\n");
8904 /* hook into SCSI subsystem */
8905 rc = hpsa_scsi_add_host(h);
8907 goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
8909 /* Monitor the controller for firmware lockups */
8910 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
8911 INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker);
8912 schedule_delayed_work(&h->monitor_ctlr_work,
8913 h->heartbeat_sample_interval);
8914 INIT_DELAYED_WORK(&h->rescan_ctlr_work, hpsa_rescan_ctlr_worker);
8915 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
8916 h->heartbeat_sample_interval);
8919 clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
8920 hpsa_free_performant_mode(h);
8921 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8922 clean6: /* sg, cmd, irq, pci, lockup, wq/aer/h */
8923 hpsa_free_sg_chain_blocks(h);
8924 clean5: /* cmd, irq, shost, pci, lu, aer/h */
8925 hpsa_free_cmd_pool(h);
8926 clean4: /* irq, shost, pci, lu, aer/h */
8928 clean3: /* shost, pci, lu, aer/h */
8929 scsi_host_put(h->scsi_host);
8930 h->scsi_host = NULL;
8931 clean2_5: /* pci, lu, aer/h */
8932 hpsa_free_pci_init(h);
8933 clean2: /* lu, aer/h */
8934 if (h->lockup_detected) {
8935 free_percpu(h->lockup_detected);
8936 h->lockup_detected = NULL;
8938 clean1: /* wq/aer/h */
8939 if (h->resubmit_wq) {
8940 destroy_workqueue(h->resubmit_wq);
8941 h->resubmit_wq = NULL;
8943 if (h->rescan_ctlr_wq) {
8944 destroy_workqueue(h->rescan_ctlr_wq);
8945 h->rescan_ctlr_wq = NULL;
8951 static void hpsa_flush_cache(struct ctlr_info *h)
8954 struct CommandList *c;
8957 if (unlikely(lockup_detected(h)))
8959 flush_buf = kzalloc(4, GFP_KERNEL);
8965 if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0,
8966 RAID_CTLR_LUNID, TYPE_CMD)) {
8969 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
8970 PCI_DMA_TODEVICE, DEFAULT_TIMEOUT);
8973 if (c->err_info->CommandStatus != 0)
8975 dev_warn(&h->pdev->dev,
8976 "error flushing cache on controller\n");
8981 /* Make controller gather fresh report lun data each time we
8982 * send down a report luns request
8984 static void hpsa_disable_rld_caching(struct ctlr_info *h)
8987 struct CommandList *c;
8990 /* Don't bother trying to set diag options if locked up */
8991 if (unlikely(h->lockup_detected))
8994 options = kzalloc(sizeof(*options), GFP_KERNEL);
8996 dev_err(&h->pdev->dev,
8997 "Error: failed to disable rld caching, during alloc.\n");
9003 /* first, get the current diag options settings */
9004 if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0,
9005 RAID_CTLR_LUNID, TYPE_CMD))
9008 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
9009 PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
9010 if ((rc != 0) || (c->err_info->CommandStatus != 0))
9013 /* Now, set the bit for disabling the RLD caching */
9014 *options |= HPSA_DIAG_OPTS_DISABLE_RLD_CACHING;
9016 if (fill_cmd(c, BMIC_SET_DIAG_OPTIONS, h, options, 4, 0,
9017 RAID_CTLR_LUNID, TYPE_CMD))
9020 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
9021 PCI_DMA_TODEVICE, DEFAULT_TIMEOUT);
9022 if ((rc != 0) || (c->err_info->CommandStatus != 0))
9025 /* Now verify that it got set: */
9026 if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0,
9027 RAID_CTLR_LUNID, TYPE_CMD))
9030 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
9031 PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
9032 if ((rc != 0) || (c->err_info->CommandStatus != 0))
9035 if (*options & HPSA_DIAG_OPTS_DISABLE_RLD_CACHING)
9039 dev_err(&h->pdev->dev,
9040 "Error: failed to disable report lun data caching.\n");
9046 static void hpsa_shutdown(struct pci_dev *pdev)
9048 struct ctlr_info *h;
9050 h = pci_get_drvdata(pdev);
9051 /* Turn board interrupts off and send the flush cache command
9052 * sendcmd will turn off interrupt, and send the flush...
9053 * To write all data in the battery backed cache to disks
9055 hpsa_flush_cache(h);
9056 h->access.set_intr_mask(h, HPSA_INTR_OFF);
9057 hpsa_free_irqs(h); /* init_one 4 */
9058 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
9061 static void hpsa_free_device_info(struct ctlr_info *h)
9065 for (i = 0; i < h->ndevices; i++) {
9071 static void hpsa_remove_one(struct pci_dev *pdev)
9073 struct ctlr_info *h;
9074 unsigned long flags;
9076 if (pci_get_drvdata(pdev) == NULL) {
9077 dev_err(&pdev->dev, "unable to remove device\n");
9080 h = pci_get_drvdata(pdev);
9082 /* Get rid of any controller monitoring work items */
9083 spin_lock_irqsave(&h->lock, flags);
9084 h->remove_in_progress = 1;
9085 spin_unlock_irqrestore(&h->lock, flags);
9086 cancel_delayed_work_sync(&h->monitor_ctlr_work);
9087 cancel_delayed_work_sync(&h->rescan_ctlr_work);
9088 destroy_workqueue(h->rescan_ctlr_wq);
9089 destroy_workqueue(h->resubmit_wq);
9092 * Call before disabling interrupts.
9093 * scsi_remove_host can trigger I/O operations especially
9094 * when multipath is enabled. There can be SYNCHRONIZE CACHE
9095 * operations which cannot complete and will hang the system.
9098 scsi_remove_host(h->scsi_host); /* init_one 8 */
9099 /* includes hpsa_free_irqs - init_one 4 */
9100 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
9101 hpsa_shutdown(pdev);
9103 hpsa_free_device_info(h); /* scan */
9105 kfree(h->hba_inquiry_data); /* init_one 10 */
9106 h->hba_inquiry_data = NULL; /* init_one 10 */
9107 hpsa_free_ioaccel2_sg_chain_blocks(h);
9108 hpsa_free_performant_mode(h); /* init_one 7 */
9109 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
9110 hpsa_free_cmd_pool(h); /* init_one 5 */
9111 kfree(h->lastlogicals);
9113 /* hpsa_free_irqs already called via hpsa_shutdown init_one 4 */
9115 scsi_host_put(h->scsi_host); /* init_one 3 */
9116 h->scsi_host = NULL; /* init_one 3 */
9118 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
9119 hpsa_free_pci_init(h); /* init_one 2.5 */
9121 free_percpu(h->lockup_detected); /* init_one 2 */
9122 h->lockup_detected = NULL; /* init_one 2 */
9123 /* (void) pci_disable_pcie_error_reporting(pdev); */ /* init_one 1 */
9125 hpsa_delete_sas_host(h);
9127 kfree(h); /* init_one 1 */
9130 static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
9131 __attribute__((unused)) pm_message_t state)
9136 static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
9141 static struct pci_driver hpsa_pci_driver = {
9143 .probe = hpsa_init_one,
9144 .remove = hpsa_remove_one,
9145 .id_table = hpsa_pci_device_id, /* id_table */
9146 .shutdown = hpsa_shutdown,
9147 .suspend = hpsa_suspend,
9148 .resume = hpsa_resume,
9151 /* Fill in bucket_map[], given nsgs (the max number of
9152 * scatter gather elements supported) and bucket[],
9153 * which is an array of 8 integers. The bucket[] array
9154 * contains 8 different DMA transfer sizes (in 16
9155 * byte increments) which the controller uses to fetch
9156 * commands. This function fills in bucket_map[], which
9157 * maps a given number of scatter gather elements to one of
9158 * the 8 DMA transfer sizes. The point of it is to allow the
9159 * controller to only do as much DMA as needed to fetch the
9160 * command, with the DMA transfer size encoded in the lower
9161 * bits of the command address.
9163 static void calc_bucket_map(int bucket[], int num_buckets,
9164 int nsgs, int min_blocks, u32 *bucket_map)
9168 /* Note, bucket_map must have nsgs+1 entries. */
9169 for (i = 0; i <= nsgs; i++) {
9170 /* Compute size of a command with i SG entries */
9171 size = i + min_blocks;
9172 b = num_buckets; /* Assume the biggest bucket */
9173 /* Find the bucket that is just big enough */
9174 for (j = 0; j < num_buckets; j++) {
9175 if (bucket[j] >= size) {
9180 /* for a command with i SG entries, use bucket b. */
9186 * return -ENODEV on err, 0 on success (or no action)
9187 * allocates numerous items that must be freed later
9189 static int hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support)
9192 unsigned long register_value;
9193 unsigned long transMethod = CFGTBL_Trans_Performant |
9194 (trans_support & CFGTBL_Trans_use_short_tags) |
9195 CFGTBL_Trans_enable_directed_msix |
9196 (trans_support & (CFGTBL_Trans_io_accel1 |
9197 CFGTBL_Trans_io_accel2));
9198 struct access_method access = SA5_performant_access;
9200 /* This is a bit complicated. There are 8 registers on
9201 * the controller which we write to to tell it 8 different
9202 * sizes of commands which there may be. It's a way of
9203 * reducing the DMA done to fetch each command. Encoded into
9204 * each command's tag are 3 bits which communicate to the controller
9205 * which of the eight sizes that command fits within. The size of
9206 * each command depends on how many scatter gather entries there are.
9207 * Each SG entry requires 16 bytes. The eight registers are programmed
9208 * with the number of 16-byte blocks a command of that size requires.
9209 * The smallest command possible requires 5 such 16 byte blocks.
9210 * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte
9211 * blocks. Note, this only extends to the SG entries contained
9212 * within the command block, and does not extend to chained blocks
9213 * of SG elements. bft[] contains the eight values we write to
9214 * the registers. They are not evenly distributed, but have more
9215 * sizes for small commands, and fewer sizes for larger commands.
9217 int bft[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD + 4};
9218 #define MIN_IOACCEL2_BFT_ENTRY 5
9219 #define HPSA_IOACCEL2_HEADER_SZ 4
9220 int bft2[16] = {MIN_IOACCEL2_BFT_ENTRY, 6, 7, 8, 9, 10, 11, 12,
9221 13, 14, 15, 16, 17, 18, 19,
9222 HPSA_IOACCEL2_HEADER_SZ + IOACCEL2_MAXSGENTRIES};
9223 BUILD_BUG_ON(ARRAY_SIZE(bft2) != 16);
9224 BUILD_BUG_ON(ARRAY_SIZE(bft) != 8);
9225 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) >
9226 16 * MIN_IOACCEL2_BFT_ENTRY);
9227 BUILD_BUG_ON(sizeof(struct ioaccel2_sg_element) != 16);
9228 BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD + 4);
9229 /* 5 = 1 s/g entry or 4k
9230 * 6 = 2 s/g entry or 8k
9231 * 8 = 4 s/g entry or 16k
9232 * 10 = 6 s/g entry or 24k
9235 /* If the controller supports either ioaccel method then
9236 * we can also use the RAID stack submit path that does not
9237 * perform the superfluous readl() after each command submission.
9239 if (trans_support & (CFGTBL_Trans_io_accel1 | CFGTBL_Trans_io_accel2))
9240 access = SA5_performant_access_no_read;
9242 /* Controller spec: zero out this buffer. */
9243 for (i = 0; i < h->nreply_queues; i++)
9244 memset(h->reply_queue[i].head, 0, h->reply_queue_size);
9246 bft[7] = SG_ENTRIES_IN_CMD + 4;
9247 calc_bucket_map(bft, ARRAY_SIZE(bft),
9248 SG_ENTRIES_IN_CMD, 4, h->blockFetchTable);
9249 for (i = 0; i < 8; i++)
9250 writel(bft[i], &h->transtable->BlockFetch[i]);
9252 /* size of controller ring buffer */
9253 writel(h->max_commands, &h->transtable->RepQSize);
9254 writel(h->nreply_queues, &h->transtable->RepQCount);
9255 writel(0, &h->transtable->RepQCtrAddrLow32);
9256 writel(0, &h->transtable->RepQCtrAddrHigh32);
9258 for (i = 0; i < h->nreply_queues; i++) {
9259 writel(0, &h->transtable->RepQAddr[i].upper);
9260 writel(h->reply_queue[i].busaddr,
9261 &h->transtable->RepQAddr[i].lower);
9264 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
9265 writel(transMethod, &(h->cfgtable->HostWrite.TransportRequest));
9267 * enable outbound interrupt coalescing in accelerator mode;
9269 if (trans_support & CFGTBL_Trans_io_accel1) {
9270 access = SA5_ioaccel_mode1_access;
9271 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
9272 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
9274 if (trans_support & CFGTBL_Trans_io_accel2) {
9275 access = SA5_ioaccel_mode2_access;
9276 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
9277 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
9280 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
9281 if (hpsa_wait_for_mode_change_ack(h)) {
9282 dev_err(&h->pdev->dev,
9283 "performant mode problem - doorbell timeout\n");
9286 register_value = readl(&(h->cfgtable->TransportActive));
9287 if (!(register_value & CFGTBL_Trans_Performant)) {
9288 dev_err(&h->pdev->dev,
9289 "performant mode problem - transport not active\n");
9292 /* Change the access methods to the performant access methods */
9294 h->transMethod = transMethod;
9296 if (!((trans_support & CFGTBL_Trans_io_accel1) ||
9297 (trans_support & CFGTBL_Trans_io_accel2)))
9300 if (trans_support & CFGTBL_Trans_io_accel1) {
9301 /* Set up I/O accelerator mode */
9302 for (i = 0; i < h->nreply_queues; i++) {
9303 writel(i, h->vaddr + IOACCEL_MODE1_REPLY_QUEUE_INDEX);
9304 h->reply_queue[i].current_entry =
9305 readl(h->vaddr + IOACCEL_MODE1_PRODUCER_INDEX);
9307 bft[7] = h->ioaccel_maxsg + 8;
9308 calc_bucket_map(bft, ARRAY_SIZE(bft), h->ioaccel_maxsg, 8,
9309 h->ioaccel1_blockFetchTable);
9311 /* initialize all reply queue entries to unused */
9312 for (i = 0; i < h->nreply_queues; i++)
9313 memset(h->reply_queue[i].head,
9314 (u8) IOACCEL_MODE1_REPLY_UNUSED,
9315 h->reply_queue_size);
9317 /* set all the constant fields in the accelerator command
9318 * frames once at init time to save CPU cycles later.
9320 for (i = 0; i < h->nr_cmds; i++) {
9321 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[i];
9323 cp->function = IOACCEL1_FUNCTION_SCSIIO;
9324 cp->err_info = (u32) (h->errinfo_pool_dhandle +
9325 (i * sizeof(struct ErrorInfo)));
9326 cp->err_info_len = sizeof(struct ErrorInfo);
9327 cp->sgl_offset = IOACCEL1_SGLOFFSET;
9328 cp->host_context_flags =
9329 cpu_to_le16(IOACCEL1_HCFLAGS_CISS_FORMAT);
9330 cp->timeout_sec = 0;
9333 cpu_to_le64((i << DIRECT_LOOKUP_SHIFT));
9335 cpu_to_le64(h->ioaccel_cmd_pool_dhandle +
9336 (i * sizeof(struct io_accel1_cmd)));
9338 } else if (trans_support & CFGTBL_Trans_io_accel2) {
9339 u64 cfg_offset, cfg_base_addr_index;
9340 u32 bft2_offset, cfg_base_addr;
9343 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
9344 &cfg_base_addr_index, &cfg_offset);
9345 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) != 64);
9346 bft2[15] = h->ioaccel_maxsg + HPSA_IOACCEL2_HEADER_SZ;
9347 calc_bucket_map(bft2, ARRAY_SIZE(bft2), h->ioaccel_maxsg,
9348 4, h->ioaccel2_blockFetchTable);
9349 bft2_offset = readl(&h->cfgtable->io_accel_request_size_offset);
9350 BUILD_BUG_ON(offsetof(struct CfgTable,
9351 io_accel_request_size_offset) != 0xb8);
9352 h->ioaccel2_bft2_regs =
9353 remap_pci_mem(pci_resource_start(h->pdev,
9354 cfg_base_addr_index) +
9355 cfg_offset + bft2_offset,
9357 sizeof(*h->ioaccel2_bft2_regs));
9358 for (i = 0; i < ARRAY_SIZE(bft2); i++)
9359 writel(bft2[i], &h->ioaccel2_bft2_regs[i]);
9361 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
9362 if (hpsa_wait_for_mode_change_ack(h)) {
9363 dev_err(&h->pdev->dev,
9364 "performant mode problem - enabling ioaccel mode\n");
9370 /* Free ioaccel1 mode command blocks and block fetch table */
9371 static void hpsa_free_ioaccel1_cmd_and_bft(struct ctlr_info *h)
9373 if (h->ioaccel_cmd_pool) {
9374 pci_free_consistent(h->pdev,
9375 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
9376 h->ioaccel_cmd_pool,
9377 h->ioaccel_cmd_pool_dhandle);
9378 h->ioaccel_cmd_pool = NULL;
9379 h->ioaccel_cmd_pool_dhandle = 0;
9381 kfree(h->ioaccel1_blockFetchTable);
9382 h->ioaccel1_blockFetchTable = NULL;
9385 /* Allocate ioaccel1 mode command blocks and block fetch table */
9386 static int hpsa_alloc_ioaccel1_cmd_and_bft(struct ctlr_info *h)
9389 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
9390 if (h->ioaccel_maxsg > IOACCEL1_MAXSGENTRIES)
9391 h->ioaccel_maxsg = IOACCEL1_MAXSGENTRIES;
9393 /* Command structures must be aligned on a 128-byte boundary
9394 * because the 7 lower bits of the address are used by the
9397 BUILD_BUG_ON(sizeof(struct io_accel1_cmd) %
9398 IOACCEL1_COMMANDLIST_ALIGNMENT);
9399 h->ioaccel_cmd_pool =
9400 pci_alloc_consistent(h->pdev,
9401 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
9402 &(h->ioaccel_cmd_pool_dhandle));
9404 h->ioaccel1_blockFetchTable =
9405 kmalloc(((h->ioaccel_maxsg + 1) *
9406 sizeof(u32)), GFP_KERNEL);
9408 if ((h->ioaccel_cmd_pool == NULL) ||
9409 (h->ioaccel1_blockFetchTable == NULL))
9412 memset(h->ioaccel_cmd_pool, 0,
9413 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool));
9417 hpsa_free_ioaccel1_cmd_and_bft(h);
9421 /* Free ioaccel2 mode command blocks and block fetch table */
9422 static void hpsa_free_ioaccel2_cmd_and_bft(struct ctlr_info *h)
9424 hpsa_free_ioaccel2_sg_chain_blocks(h);
9426 if (h->ioaccel2_cmd_pool) {
9427 pci_free_consistent(h->pdev,
9428 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
9429 h->ioaccel2_cmd_pool,
9430 h->ioaccel2_cmd_pool_dhandle);
9431 h->ioaccel2_cmd_pool = NULL;
9432 h->ioaccel2_cmd_pool_dhandle = 0;
9434 kfree(h->ioaccel2_blockFetchTable);
9435 h->ioaccel2_blockFetchTable = NULL;
9438 /* Allocate ioaccel2 mode command blocks and block fetch table */
9439 static int hpsa_alloc_ioaccel2_cmd_and_bft(struct ctlr_info *h)
9443 /* Allocate ioaccel2 mode command blocks and block fetch table */
9446 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
9447 if (h->ioaccel_maxsg > IOACCEL2_MAXSGENTRIES)
9448 h->ioaccel_maxsg = IOACCEL2_MAXSGENTRIES;
9450 BUILD_BUG_ON(sizeof(struct io_accel2_cmd) %
9451 IOACCEL2_COMMANDLIST_ALIGNMENT);
9452 h->ioaccel2_cmd_pool =
9453 pci_alloc_consistent(h->pdev,
9454 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
9455 &(h->ioaccel2_cmd_pool_dhandle));
9457 h->ioaccel2_blockFetchTable =
9458 kmalloc(((h->ioaccel_maxsg + 1) *
9459 sizeof(u32)), GFP_KERNEL);
9461 if ((h->ioaccel2_cmd_pool == NULL) ||
9462 (h->ioaccel2_blockFetchTable == NULL)) {
9467 rc = hpsa_allocate_ioaccel2_sg_chain_blocks(h);
9471 memset(h->ioaccel2_cmd_pool, 0,
9472 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool));
9476 hpsa_free_ioaccel2_cmd_and_bft(h);
9480 /* Free items allocated by hpsa_put_ctlr_into_performant_mode */
9481 static void hpsa_free_performant_mode(struct ctlr_info *h)
9483 kfree(h->blockFetchTable);
9484 h->blockFetchTable = NULL;
9485 hpsa_free_reply_queues(h);
9486 hpsa_free_ioaccel1_cmd_and_bft(h);
9487 hpsa_free_ioaccel2_cmd_and_bft(h);
9490 /* return -ENODEV on error, 0 on success (or no action)
9491 * allocates numerous items that must be freed later
9493 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
9496 unsigned long transMethod = CFGTBL_Trans_Performant |
9497 CFGTBL_Trans_use_short_tags;
9500 if (hpsa_simple_mode)
9503 trans_support = readl(&(h->cfgtable->TransportSupport));
9504 if (!(trans_support & PERFORMANT_MODE))
9507 /* Check for I/O accelerator mode support */
9508 if (trans_support & CFGTBL_Trans_io_accel1) {
9509 transMethod |= CFGTBL_Trans_io_accel1 |
9510 CFGTBL_Trans_enable_directed_msix;
9511 rc = hpsa_alloc_ioaccel1_cmd_and_bft(h);
9514 } else if (trans_support & CFGTBL_Trans_io_accel2) {
9515 transMethod |= CFGTBL_Trans_io_accel2 |
9516 CFGTBL_Trans_enable_directed_msix;
9517 rc = hpsa_alloc_ioaccel2_cmd_and_bft(h);
9522 h->nreply_queues = h->msix_vector > 0 ? h->msix_vector : 1;
9523 hpsa_get_max_perf_mode_cmds(h);
9524 /* Performant mode ring buffer and supporting data structures */
9525 h->reply_queue_size = h->max_commands * sizeof(u64);
9527 for (i = 0; i < h->nreply_queues; i++) {
9528 h->reply_queue[i].head = pci_alloc_consistent(h->pdev,
9529 h->reply_queue_size,
9530 &(h->reply_queue[i].busaddr));
9531 if (!h->reply_queue[i].head) {
9533 goto clean1; /* rq, ioaccel */
9535 h->reply_queue[i].size = h->max_commands;
9536 h->reply_queue[i].wraparound = 1; /* spec: init to 1 */
9537 h->reply_queue[i].current_entry = 0;
9540 /* Need a block fetch table for performant mode */
9541 h->blockFetchTable = kmalloc(((SG_ENTRIES_IN_CMD + 1) *
9542 sizeof(u32)), GFP_KERNEL);
9543 if (!h->blockFetchTable) {
9545 goto clean1; /* rq, ioaccel */
9548 rc = hpsa_enter_performant_mode(h, trans_support);
9550 goto clean2; /* bft, rq, ioaccel */
9553 clean2: /* bft, rq, ioaccel */
9554 kfree(h->blockFetchTable);
9555 h->blockFetchTable = NULL;
9556 clean1: /* rq, ioaccel */
9557 hpsa_free_reply_queues(h);
9558 hpsa_free_ioaccel1_cmd_and_bft(h);
9559 hpsa_free_ioaccel2_cmd_and_bft(h);
9563 static int is_accelerated_cmd(struct CommandList *c)
9565 return c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_IOACCEL2;
9568 static void hpsa_drain_accel_commands(struct ctlr_info *h)
9570 struct CommandList *c = NULL;
9571 int i, accel_cmds_out;
9574 do { /* wait for all outstanding ioaccel commands to drain out */
9576 for (i = 0; i < h->nr_cmds; i++) {
9577 c = h->cmd_pool + i;
9578 refcount = atomic_inc_return(&c->refcount);
9579 if (refcount > 1) /* Command is allocated */
9580 accel_cmds_out += is_accelerated_cmd(c);
9583 if (accel_cmds_out <= 0)
9589 static struct hpsa_sas_phy *hpsa_alloc_sas_phy(
9590 struct hpsa_sas_port *hpsa_sas_port)
9592 struct hpsa_sas_phy *hpsa_sas_phy;
9593 struct sas_phy *phy;
9595 hpsa_sas_phy = kzalloc(sizeof(*hpsa_sas_phy), GFP_KERNEL);
9599 phy = sas_phy_alloc(hpsa_sas_port->parent_node->parent_dev,
9600 hpsa_sas_port->next_phy_index);
9602 kfree(hpsa_sas_phy);
9606 hpsa_sas_port->next_phy_index++;
9607 hpsa_sas_phy->phy = phy;
9608 hpsa_sas_phy->parent_port = hpsa_sas_port;
9610 return hpsa_sas_phy;
9613 static void hpsa_free_sas_phy(struct hpsa_sas_phy *hpsa_sas_phy)
9615 struct sas_phy *phy = hpsa_sas_phy->phy;
9617 sas_port_delete_phy(hpsa_sas_phy->parent_port->port, phy);
9619 if (hpsa_sas_phy->added_to_port)
9620 list_del(&hpsa_sas_phy->phy_list_entry);
9621 kfree(hpsa_sas_phy);
9624 static int hpsa_sas_port_add_phy(struct hpsa_sas_phy *hpsa_sas_phy)
9627 struct hpsa_sas_port *hpsa_sas_port;
9628 struct sas_phy *phy;
9629 struct sas_identify *identify;
9631 hpsa_sas_port = hpsa_sas_phy->parent_port;
9632 phy = hpsa_sas_phy->phy;
9634 identify = &phy->identify;
9635 memset(identify, 0, sizeof(*identify));
9636 identify->sas_address = hpsa_sas_port->sas_address;
9637 identify->device_type = SAS_END_DEVICE;
9638 identify->initiator_port_protocols = SAS_PROTOCOL_STP;
9639 identify->target_port_protocols = SAS_PROTOCOL_STP;
9640 phy->minimum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
9641 phy->maximum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
9642 phy->minimum_linkrate = SAS_LINK_RATE_UNKNOWN;
9643 phy->maximum_linkrate = SAS_LINK_RATE_UNKNOWN;
9644 phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
9646 rc = sas_phy_add(hpsa_sas_phy->phy);
9650 sas_port_add_phy(hpsa_sas_port->port, hpsa_sas_phy->phy);
9651 list_add_tail(&hpsa_sas_phy->phy_list_entry,
9652 &hpsa_sas_port->phy_list_head);
9653 hpsa_sas_phy->added_to_port = true;
9659 hpsa_sas_port_add_rphy(struct hpsa_sas_port *hpsa_sas_port,
9660 struct sas_rphy *rphy)
9662 struct sas_identify *identify;
9664 identify = &rphy->identify;
9665 identify->sas_address = hpsa_sas_port->sas_address;
9666 identify->initiator_port_protocols = SAS_PROTOCOL_STP;
9667 identify->target_port_protocols = SAS_PROTOCOL_STP;
9669 return sas_rphy_add(rphy);
9672 static struct hpsa_sas_port
9673 *hpsa_alloc_sas_port(struct hpsa_sas_node *hpsa_sas_node,
9677 struct hpsa_sas_port *hpsa_sas_port;
9678 struct sas_port *port;
9680 hpsa_sas_port = kzalloc(sizeof(*hpsa_sas_port), GFP_KERNEL);
9684 INIT_LIST_HEAD(&hpsa_sas_port->phy_list_head);
9685 hpsa_sas_port->parent_node = hpsa_sas_node;
9687 port = sas_port_alloc_num(hpsa_sas_node->parent_dev);
9689 goto free_hpsa_port;
9691 rc = sas_port_add(port);
9695 hpsa_sas_port->port = port;
9696 hpsa_sas_port->sas_address = sas_address;
9697 list_add_tail(&hpsa_sas_port->port_list_entry,
9698 &hpsa_sas_node->port_list_head);
9700 return hpsa_sas_port;
9703 sas_port_free(port);
9705 kfree(hpsa_sas_port);
9710 static void hpsa_free_sas_port(struct hpsa_sas_port *hpsa_sas_port)
9712 struct hpsa_sas_phy *hpsa_sas_phy;
9713 struct hpsa_sas_phy *next;
9715 list_for_each_entry_safe(hpsa_sas_phy, next,
9716 &hpsa_sas_port->phy_list_head, phy_list_entry)
9717 hpsa_free_sas_phy(hpsa_sas_phy);
9719 sas_port_delete(hpsa_sas_port->port);
9720 list_del(&hpsa_sas_port->port_list_entry);
9721 kfree(hpsa_sas_port);
9724 static struct hpsa_sas_node *hpsa_alloc_sas_node(struct device *parent_dev)
9726 struct hpsa_sas_node *hpsa_sas_node;
9728 hpsa_sas_node = kzalloc(sizeof(*hpsa_sas_node), GFP_KERNEL);
9729 if (hpsa_sas_node) {
9730 hpsa_sas_node->parent_dev = parent_dev;
9731 INIT_LIST_HEAD(&hpsa_sas_node->port_list_head);
9734 return hpsa_sas_node;
9737 static void hpsa_free_sas_node(struct hpsa_sas_node *hpsa_sas_node)
9739 struct hpsa_sas_port *hpsa_sas_port;
9740 struct hpsa_sas_port *next;
9745 list_for_each_entry_safe(hpsa_sas_port, next,
9746 &hpsa_sas_node->port_list_head, port_list_entry)
9747 hpsa_free_sas_port(hpsa_sas_port);
9749 kfree(hpsa_sas_node);
9752 static struct hpsa_scsi_dev_t
9753 *hpsa_find_device_by_sas_rphy(struct ctlr_info *h,
9754 struct sas_rphy *rphy)
9757 struct hpsa_scsi_dev_t *device;
9759 for (i = 0; i < h->ndevices; i++) {
9761 if (!device->sas_port)
9763 if (device->sas_port->rphy == rphy)
9770 static int hpsa_add_sas_host(struct ctlr_info *h)
9773 struct device *parent_dev;
9774 struct hpsa_sas_node *hpsa_sas_node;
9775 struct hpsa_sas_port *hpsa_sas_port;
9776 struct hpsa_sas_phy *hpsa_sas_phy;
9778 parent_dev = &h->scsi_host->shost_gendev;
9780 hpsa_sas_node = hpsa_alloc_sas_node(parent_dev);
9784 hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, h->sas_address);
9785 if (!hpsa_sas_port) {
9790 hpsa_sas_phy = hpsa_alloc_sas_phy(hpsa_sas_port);
9791 if (!hpsa_sas_phy) {
9796 rc = hpsa_sas_port_add_phy(hpsa_sas_phy);
9800 h->sas_host = hpsa_sas_node;
9805 hpsa_free_sas_phy(hpsa_sas_phy);
9807 hpsa_free_sas_port(hpsa_sas_port);
9809 hpsa_free_sas_node(hpsa_sas_node);
9814 static void hpsa_delete_sas_host(struct ctlr_info *h)
9816 hpsa_free_sas_node(h->sas_host);
9819 static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node,
9820 struct hpsa_scsi_dev_t *device)
9823 struct hpsa_sas_port *hpsa_sas_port;
9824 struct sas_rphy *rphy;
9826 hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, device->sas_address);
9830 rphy = sas_end_device_alloc(hpsa_sas_port->port);
9836 hpsa_sas_port->rphy = rphy;
9837 device->sas_port = hpsa_sas_port;
9839 rc = hpsa_sas_port_add_rphy(hpsa_sas_port, rphy);
9846 hpsa_free_sas_port(hpsa_sas_port);
9847 device->sas_port = NULL;
9852 static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device)
9854 if (device->sas_port) {
9855 hpsa_free_sas_port(device->sas_port);
9856 device->sas_port = NULL;
9861 hpsa_sas_get_linkerrors(struct sas_phy *phy)
9867 hpsa_sas_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
9874 hpsa_sas_get_bay_identifier(struct sas_rphy *rphy)
9880 hpsa_sas_phy_reset(struct sas_phy *phy, int hard_reset)
9886 hpsa_sas_phy_enable(struct sas_phy *phy, int enable)
9892 hpsa_sas_phy_setup(struct sas_phy *phy)
9898 hpsa_sas_phy_release(struct sas_phy *phy)
9903 hpsa_sas_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
9908 /* SMP = Serial Management Protocol */
9910 hpsa_sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
9911 struct request *req)
9916 static struct sas_function_template hpsa_sas_transport_functions = {
9917 .get_linkerrors = hpsa_sas_get_linkerrors,
9918 .get_enclosure_identifier = hpsa_sas_get_enclosure_identifier,
9919 .get_bay_identifier = hpsa_sas_get_bay_identifier,
9920 .phy_reset = hpsa_sas_phy_reset,
9921 .phy_enable = hpsa_sas_phy_enable,
9922 .phy_setup = hpsa_sas_phy_setup,
9923 .phy_release = hpsa_sas_phy_release,
9924 .set_phy_speed = hpsa_sas_phy_speed,
9925 .smp_handler = hpsa_sas_smp_handler,
9929 * This is it. Register the PCI driver information for the cards we control
9930 * the OS will call our registered routines when it finds one of our cards.
9932 static int __init hpsa_init(void)
9936 hpsa_sas_transport_template =
9937 sas_attach_transport(&hpsa_sas_transport_functions);
9938 if (!hpsa_sas_transport_template)
9941 rc = pci_register_driver(&hpsa_pci_driver);
9944 sas_release_transport(hpsa_sas_transport_template);
9949 static void __exit hpsa_cleanup(void)
9951 pci_unregister_driver(&hpsa_pci_driver);
9952 sas_release_transport(hpsa_sas_transport_template);
9955 static void __attribute__((unused)) verify_offsets(void)
9957 #define VERIFY_OFFSET(member, offset) \
9958 BUILD_BUG_ON(offsetof(struct raid_map_data, member) != offset)
9960 VERIFY_OFFSET(structure_size, 0);
9961 VERIFY_OFFSET(volume_blk_size, 4);
9962 VERIFY_OFFSET(volume_blk_cnt, 8);
9963 VERIFY_OFFSET(phys_blk_shift, 16);
9964 VERIFY_OFFSET(parity_rotation_shift, 17);
9965 VERIFY_OFFSET(strip_size, 18);
9966 VERIFY_OFFSET(disk_starting_blk, 20);
9967 VERIFY_OFFSET(disk_blk_cnt, 28);
9968 VERIFY_OFFSET(data_disks_per_row, 36);
9969 VERIFY_OFFSET(metadata_disks_per_row, 38);
9970 VERIFY_OFFSET(row_cnt, 40);
9971 VERIFY_OFFSET(layout_map_count, 42);
9972 VERIFY_OFFSET(flags, 44);
9973 VERIFY_OFFSET(dekindex, 46);
9974 /* VERIFY_OFFSET(reserved, 48 */
9975 VERIFY_OFFSET(data, 64);
9977 #undef VERIFY_OFFSET
9979 #define VERIFY_OFFSET(member, offset) \
9980 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, member) != offset)
9982 VERIFY_OFFSET(IU_type, 0);
9983 VERIFY_OFFSET(direction, 1);
9984 VERIFY_OFFSET(reply_queue, 2);
9985 /* VERIFY_OFFSET(reserved1, 3); */
9986 VERIFY_OFFSET(scsi_nexus, 4);
9987 VERIFY_OFFSET(Tag, 8);
9988 VERIFY_OFFSET(cdb, 16);
9989 VERIFY_OFFSET(cciss_lun, 32);
9990 VERIFY_OFFSET(data_len, 40);
9991 VERIFY_OFFSET(cmd_priority_task_attr, 44);
9992 VERIFY_OFFSET(sg_count, 45);
9993 /* VERIFY_OFFSET(reserved3 */
9994 VERIFY_OFFSET(err_ptr, 48);
9995 VERIFY_OFFSET(err_len, 56);
9996 /* VERIFY_OFFSET(reserved4 */
9997 VERIFY_OFFSET(sg, 64);
9999 #undef VERIFY_OFFSET
10001 #define VERIFY_OFFSET(member, offset) \
10002 BUILD_BUG_ON(offsetof(struct io_accel1_cmd, member) != offset)
10004 VERIFY_OFFSET(dev_handle, 0x00);
10005 VERIFY_OFFSET(reserved1, 0x02);
10006 VERIFY_OFFSET(function, 0x03);
10007 VERIFY_OFFSET(reserved2, 0x04);
10008 VERIFY_OFFSET(err_info, 0x0C);
10009 VERIFY_OFFSET(reserved3, 0x10);
10010 VERIFY_OFFSET(err_info_len, 0x12);
10011 VERIFY_OFFSET(reserved4, 0x13);
10012 VERIFY_OFFSET(sgl_offset, 0x14);
10013 VERIFY_OFFSET(reserved5, 0x15);
10014 VERIFY_OFFSET(transfer_len, 0x1C);
10015 VERIFY_OFFSET(reserved6, 0x20);
10016 VERIFY_OFFSET(io_flags, 0x24);
10017 VERIFY_OFFSET(reserved7, 0x26);
10018 VERIFY_OFFSET(LUN, 0x34);
10019 VERIFY_OFFSET(control, 0x3C);
10020 VERIFY_OFFSET(CDB, 0x40);
10021 VERIFY_OFFSET(reserved8, 0x50);
10022 VERIFY_OFFSET(host_context_flags, 0x60);
10023 VERIFY_OFFSET(timeout_sec, 0x62);
10024 VERIFY_OFFSET(ReplyQueue, 0x64);
10025 VERIFY_OFFSET(reserved9, 0x65);
10026 VERIFY_OFFSET(tag, 0x68);
10027 VERIFY_OFFSET(host_addr, 0x70);
10028 VERIFY_OFFSET(CISS_LUN, 0x78);
10029 VERIFY_OFFSET(SG, 0x78 + 8);
10030 #undef VERIFY_OFFSET
10033 module_init(hpsa_init);
10034 module_exit(hpsa_cleanup);