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/kernel.h>
25 #include <linux/slab.h>
26 #include <linux/delay.h>
28 #include <linux/timer.h>
29 #include <linux/init.h>
30 #include <linux/spinlock.h>
31 #include <linux/compat.h>
32 #include <linux/blktrace_api.h>
33 #include <linux/uaccess.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/completion.h>
37 #include <linux/moduleparam.h>
38 #include <scsi/scsi.h>
39 #include <scsi/scsi_cmnd.h>
40 #include <scsi/scsi_device.h>
41 #include <scsi/scsi_host.h>
42 #include <scsi/scsi_tcq.h>
43 #include <scsi/scsi_eh.h>
44 #include <scsi/scsi_transport_sas.h>
45 #include <scsi/scsi_dbg.h>
46 #include <linux/cciss_ioctl.h>
47 #include <linux/string.h>
48 #include <linux/bitmap.h>
49 #include <linux/atomic.h>
50 #include <linux/jiffies.h>
51 #include <linux/percpu-defs.h>
52 #include <linux/percpu.h>
53 #include <asm/unaligned.h>
54 #include <asm/div64.h>
59 * HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.'
60 * with an optional trailing '-' followed by a byte value (0-255).
62 #define HPSA_DRIVER_VERSION "3.4.20-170"
63 #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
66 /* How long to wait for CISS doorbell communication */
67 #define CLEAR_EVENT_WAIT_INTERVAL 20 /* ms for each msleep() call */
68 #define MODE_CHANGE_WAIT_INTERVAL 10 /* ms for each msleep() call */
69 #define MAX_CLEAR_EVENT_WAIT 30000 /* times 20 ms = 600 s */
70 #define MAX_MODE_CHANGE_WAIT 2000 /* times 10 ms = 20 s */
71 #define MAX_IOCTL_CONFIG_WAIT 1000
73 /*define how many times we will try a command because of bus resets */
74 #define MAX_CMD_RETRIES 3
75 /* How long to wait before giving up on a command */
76 #define HPSA_EH_PTRAID_TIMEOUT (240 * HZ)
78 /* Embedded module documentation macros - see modules.h */
79 MODULE_AUTHOR("Hewlett-Packard Company");
80 MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
82 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
83 MODULE_VERSION(HPSA_DRIVER_VERSION);
84 MODULE_LICENSE("GPL");
85 MODULE_ALIAS("cciss");
87 static int hpsa_simple_mode;
88 module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR);
89 MODULE_PARM_DESC(hpsa_simple_mode,
90 "Use 'simple mode' rather than 'performant mode'");
92 /* define the PCI info for the cards we can control */
93 static const struct pci_device_id hpsa_pci_device_id[] = {
94 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241},
95 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243},
96 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245},
97 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247},
98 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249},
99 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A},
100 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B},
101 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233},
102 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3350},
103 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3351},
104 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3352},
105 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3353},
106 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3354},
107 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3355},
108 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3356},
109 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103c, 0x1920},
110 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1921},
111 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1922},
112 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1923},
113 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1924},
114 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103c, 0x1925},
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},
149 {PCI_VENDOR_ID_COMPAQ, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
150 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
154 MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id);
156 /* board_id = Subsystem Device ID & Vendor ID
157 * product = Marketing Name for the board
158 * access = Address of the struct of function pointers
160 static struct board_type products[] = {
161 {0x40700E11, "Smart Array 5300", &SA5A_access},
162 {0x40800E11, "Smart Array 5i", &SA5B_access},
163 {0x40820E11, "Smart Array 532", &SA5B_access},
164 {0x40830E11, "Smart Array 5312", &SA5B_access},
165 {0x409A0E11, "Smart Array 641", &SA5A_access},
166 {0x409B0E11, "Smart Array 642", &SA5A_access},
167 {0x409C0E11, "Smart Array 6400", &SA5A_access},
168 {0x409D0E11, "Smart Array 6400 EM", &SA5A_access},
169 {0x40910E11, "Smart Array 6i", &SA5A_access},
170 {0x3225103C, "Smart Array P600", &SA5A_access},
171 {0x3223103C, "Smart Array P800", &SA5A_access},
172 {0x3234103C, "Smart Array P400", &SA5A_access},
173 {0x3235103C, "Smart Array P400i", &SA5A_access},
174 {0x3211103C, "Smart Array E200i", &SA5A_access},
175 {0x3212103C, "Smart Array E200", &SA5A_access},
176 {0x3213103C, "Smart Array E200i", &SA5A_access},
177 {0x3214103C, "Smart Array E200i", &SA5A_access},
178 {0x3215103C, "Smart Array E200i", &SA5A_access},
179 {0x3237103C, "Smart Array E500", &SA5A_access},
180 {0x323D103C, "Smart Array P700m", &SA5A_access},
181 {0x3241103C, "Smart Array P212", &SA5_access},
182 {0x3243103C, "Smart Array P410", &SA5_access},
183 {0x3245103C, "Smart Array P410i", &SA5_access},
184 {0x3247103C, "Smart Array P411", &SA5_access},
185 {0x3249103C, "Smart Array P812", &SA5_access},
186 {0x324A103C, "Smart Array P712m", &SA5_access},
187 {0x324B103C, "Smart Array P711m", &SA5_access},
188 {0x3233103C, "HP StorageWorks 1210m", &SA5_access}, /* alias of 333f */
189 {0x3350103C, "Smart Array P222", &SA5_access},
190 {0x3351103C, "Smart Array P420", &SA5_access},
191 {0x3352103C, "Smart Array P421", &SA5_access},
192 {0x3353103C, "Smart Array P822", &SA5_access},
193 {0x3354103C, "Smart Array P420i", &SA5_access},
194 {0x3355103C, "Smart Array P220i", &SA5_access},
195 {0x3356103C, "Smart Array P721m", &SA5_access},
196 {0x1920103C, "Smart Array P430i", &SA5_access},
197 {0x1921103C, "Smart Array P830i", &SA5_access},
198 {0x1922103C, "Smart Array P430", &SA5_access},
199 {0x1923103C, "Smart Array P431", &SA5_access},
200 {0x1924103C, "Smart Array P830", &SA5_access},
201 {0x1925103C, "Smart Array P831", &SA5_access},
202 {0x1926103C, "Smart Array P731m", &SA5_access},
203 {0x1928103C, "Smart Array P230i", &SA5_access},
204 {0x1929103C, "Smart Array P530", &SA5_access},
205 {0x21BD103C, "Smart Array P244br", &SA5_access},
206 {0x21BE103C, "Smart Array P741m", &SA5_access},
207 {0x21BF103C, "Smart HBA H240ar", &SA5_access},
208 {0x21C0103C, "Smart Array P440ar", &SA5_access},
209 {0x21C1103C, "Smart Array P840ar", &SA5_access},
210 {0x21C2103C, "Smart Array P440", &SA5_access},
211 {0x21C3103C, "Smart Array P441", &SA5_access},
212 {0x21C4103C, "Smart Array", &SA5_access},
213 {0x21C5103C, "Smart Array P841", &SA5_access},
214 {0x21C6103C, "Smart HBA H244br", &SA5_access},
215 {0x21C7103C, "Smart HBA H240", &SA5_access},
216 {0x21C8103C, "Smart HBA H241", &SA5_access},
217 {0x21C9103C, "Smart Array", &SA5_access},
218 {0x21CA103C, "Smart Array P246br", &SA5_access},
219 {0x21CB103C, "Smart Array P840", &SA5_access},
220 {0x21CC103C, "Smart Array", &SA5_access},
221 {0x21CD103C, "Smart Array", &SA5_access},
222 {0x21CE103C, "Smart HBA", &SA5_access},
223 {0x05809005, "SmartHBA-SA", &SA5_access},
224 {0x05819005, "SmartHBA-SA 8i", &SA5_access},
225 {0x05829005, "SmartHBA-SA 8i8e", &SA5_access},
226 {0x05839005, "SmartHBA-SA 8e", &SA5_access},
227 {0x05849005, "SmartHBA-SA 16i", &SA5_access},
228 {0x05859005, "SmartHBA-SA 4i4e", &SA5_access},
229 {0x00761590, "HP Storage P1224 Array Controller", &SA5_access},
230 {0x00871590, "HP Storage P1224e Array Controller", &SA5_access},
231 {0x007D1590, "HP Storage P1228 Array Controller", &SA5_access},
232 {0x00881590, "HP Storage P1228e Array Controller", &SA5_access},
233 {0x333f103c, "HP StorageWorks 1210m Array Controller", &SA5_access},
234 {0xFFFF103C, "Unknown Smart Array", &SA5_access},
237 static struct scsi_transport_template *hpsa_sas_transport_template;
238 static int hpsa_add_sas_host(struct ctlr_info *h);
239 static void hpsa_delete_sas_host(struct ctlr_info *h);
240 static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node,
241 struct hpsa_scsi_dev_t *device);
242 static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device);
243 static struct hpsa_scsi_dev_t
244 *hpsa_find_device_by_sas_rphy(struct ctlr_info *h,
245 struct sas_rphy *rphy);
247 #define SCSI_CMD_BUSY ((struct scsi_cmnd *)&hpsa_cmd_busy)
248 static const struct scsi_cmnd hpsa_cmd_busy;
249 #define SCSI_CMD_IDLE ((struct scsi_cmnd *)&hpsa_cmd_idle)
250 static const struct scsi_cmnd hpsa_cmd_idle;
251 static int number_of_controllers;
253 static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id);
254 static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id);
255 static int hpsa_ioctl(struct scsi_device *dev, unsigned int cmd,
257 static int hpsa_passthru_ioctl(struct ctlr_info *h,
258 IOCTL_Command_struct *iocommand);
259 static int hpsa_big_passthru_ioctl(struct ctlr_info *h,
260 BIG_IOCTL_Command_struct *ioc);
263 static int hpsa_compat_ioctl(struct scsi_device *dev, unsigned int cmd,
267 static void cmd_free(struct ctlr_info *h, struct CommandList *c);
268 static struct CommandList *cmd_alloc(struct ctlr_info *h);
269 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c);
270 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
271 struct scsi_cmnd *scmd);
272 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
273 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
275 static void hpsa_free_cmd_pool(struct ctlr_info *h);
276 #define VPD_PAGE (1 << 8)
277 #define HPSA_SIMPLE_ERROR_BITS 0x03
279 static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
280 static void hpsa_scan_start(struct Scsi_Host *);
281 static int hpsa_scan_finished(struct Scsi_Host *sh,
282 unsigned long elapsed_time);
283 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth);
285 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd);
286 static int hpsa_slave_alloc(struct scsi_device *sdev);
287 static int hpsa_slave_configure(struct scsi_device *sdev);
288 static void hpsa_slave_destroy(struct scsi_device *sdev);
290 static void hpsa_update_scsi_devices(struct ctlr_info *h);
291 static int check_for_unit_attention(struct ctlr_info *h,
292 struct CommandList *c);
293 static void check_ioctl_unit_attention(struct ctlr_info *h,
294 struct CommandList *c);
295 /* performant mode helper functions */
296 static void calc_bucket_map(int *bucket, int num_buckets,
297 int nsgs, int min_blocks, u32 *bucket_map);
298 static void hpsa_free_performant_mode(struct ctlr_info *h);
299 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h);
300 static inline u32 next_command(struct ctlr_info *h, u8 q);
301 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
302 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
304 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
305 unsigned long *memory_bar);
306 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id,
308 static int wait_for_device_to_become_ready(struct ctlr_info *h,
309 unsigned char lunaddr[],
311 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
313 static inline void finish_cmd(struct CommandList *c);
314 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h);
315 #define BOARD_NOT_READY 0
316 #define BOARD_READY 1
317 static void hpsa_drain_accel_commands(struct ctlr_info *h);
318 static void hpsa_flush_cache(struct ctlr_info *h);
319 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
320 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
321 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk);
322 static void hpsa_command_resubmit_worker(struct work_struct *work);
323 static u32 lockup_detected(struct ctlr_info *h);
324 static int detect_controller_lockup(struct ctlr_info *h);
325 static void hpsa_disable_rld_caching(struct ctlr_info *h);
326 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
327 struct ReportExtendedLUNdata *buf, int bufsize);
328 static bool hpsa_vpd_page_supported(struct ctlr_info *h,
329 unsigned char scsi3addr[], u8 page);
330 static int hpsa_luns_changed(struct ctlr_info *h);
331 static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c,
332 struct hpsa_scsi_dev_t *dev,
333 unsigned char *scsi3addr);
335 static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
337 unsigned long *priv = shost_priv(sdev->host);
338 return (struct ctlr_info *) *priv;
341 static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh)
343 unsigned long *priv = shost_priv(sh);
344 return (struct ctlr_info *) *priv;
347 static inline bool hpsa_is_cmd_idle(struct CommandList *c)
349 return c->scsi_cmd == SCSI_CMD_IDLE;
352 /* extract sense key, asc, and ascq from sense data. -1 means invalid. */
353 static void decode_sense_data(const u8 *sense_data, int sense_data_len,
354 u8 *sense_key, u8 *asc, u8 *ascq)
356 struct scsi_sense_hdr sshdr;
363 if (sense_data_len < 1)
366 rc = scsi_normalize_sense(sense_data, sense_data_len, &sshdr);
368 *sense_key = sshdr.sense_key;
374 static int check_for_unit_attention(struct ctlr_info *h,
375 struct CommandList *c)
377 u8 sense_key, asc, ascq;
380 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
381 sense_len = sizeof(c->err_info->SenseInfo);
383 sense_len = c->err_info->SenseLen;
385 decode_sense_data(c->err_info->SenseInfo, sense_len,
386 &sense_key, &asc, &ascq);
387 if (sense_key != UNIT_ATTENTION || asc == 0xff)
392 dev_warn(&h->pdev->dev,
393 "%s: a state change detected, command retried\n",
397 dev_warn(&h->pdev->dev,
398 "%s: LUN failure detected\n", h->devname);
400 case REPORT_LUNS_CHANGED:
401 dev_warn(&h->pdev->dev,
402 "%s: report LUN data changed\n", h->devname);
404 * Note: this REPORT_LUNS_CHANGED condition only occurs on the external
405 * target (array) devices.
409 dev_warn(&h->pdev->dev,
410 "%s: a power on or device reset detected\n",
413 case UNIT_ATTENTION_CLEARED:
414 dev_warn(&h->pdev->dev,
415 "%s: unit attention cleared by another initiator\n",
419 dev_warn(&h->pdev->dev,
420 "%s: unknown unit attention detected\n",
427 static int check_for_busy(struct ctlr_info *h, struct CommandList *c)
429 if (c->err_info->CommandStatus != CMD_TARGET_STATUS ||
430 (c->err_info->ScsiStatus != SAM_STAT_BUSY &&
431 c->err_info->ScsiStatus != SAM_STAT_TASK_SET_FULL))
433 dev_warn(&h->pdev->dev, HPSA "device busy");
437 static u32 lockup_detected(struct ctlr_info *h);
438 static ssize_t host_show_lockup_detected(struct device *dev,
439 struct device_attribute *attr, char *buf)
443 struct Scsi_Host *shost = class_to_shost(dev);
445 h = shost_to_hba(shost);
446 ld = lockup_detected(h);
448 return sprintf(buf, "ld=%d\n", ld);
451 static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev,
452 struct device_attribute *attr,
453 const char *buf, size_t count)
457 struct Scsi_Host *shost = class_to_shost(dev);
460 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
462 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
463 strncpy(tmpbuf, buf, len);
465 if (sscanf(tmpbuf, "%d", &status) != 1)
467 h = shost_to_hba(shost);
468 h->acciopath_status = !!status;
469 dev_warn(&h->pdev->dev,
470 "hpsa: HP SSD Smart Path %s via sysfs update.\n",
471 h->acciopath_status ? "enabled" : "disabled");
475 static ssize_t host_store_raid_offload_debug(struct device *dev,
476 struct device_attribute *attr,
477 const char *buf, size_t count)
479 int debug_level, len;
481 struct Scsi_Host *shost = class_to_shost(dev);
484 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
486 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
487 strncpy(tmpbuf, buf, len);
489 if (sscanf(tmpbuf, "%d", &debug_level) != 1)
493 h = shost_to_hba(shost);
494 h->raid_offload_debug = debug_level;
495 dev_warn(&h->pdev->dev, "hpsa: Set raid_offload_debug level = %d\n",
496 h->raid_offload_debug);
500 static ssize_t host_store_rescan(struct device *dev,
501 struct device_attribute *attr,
502 const char *buf, size_t count)
505 struct Scsi_Host *shost = class_to_shost(dev);
506 h = shost_to_hba(shost);
507 hpsa_scan_start(h->scsi_host);
511 static void hpsa_turn_off_ioaccel_for_device(struct hpsa_scsi_dev_t *device)
513 device->offload_enabled = 0;
514 device->offload_to_be_enabled = 0;
517 static ssize_t host_show_firmware_revision(struct device *dev,
518 struct device_attribute *attr, char *buf)
521 struct Scsi_Host *shost = class_to_shost(dev);
522 unsigned char *fwrev;
524 h = shost_to_hba(shost);
525 if (!h->hba_inquiry_data)
527 fwrev = &h->hba_inquiry_data[32];
528 return snprintf(buf, 20, "%c%c%c%c\n",
529 fwrev[0], fwrev[1], fwrev[2], fwrev[3]);
532 static ssize_t host_show_commands_outstanding(struct device *dev,
533 struct device_attribute *attr, char *buf)
535 struct Scsi_Host *shost = class_to_shost(dev);
536 struct ctlr_info *h = shost_to_hba(shost);
538 return snprintf(buf, 20, "%d\n",
539 atomic_read(&h->commands_outstanding));
542 static ssize_t host_show_transport_mode(struct device *dev,
543 struct device_attribute *attr, char *buf)
546 struct Scsi_Host *shost = class_to_shost(dev);
548 h = shost_to_hba(shost);
549 return snprintf(buf, 20, "%s\n",
550 h->transMethod & CFGTBL_Trans_Performant ?
551 "performant" : "simple");
554 static ssize_t host_show_hp_ssd_smart_path_status(struct device *dev,
555 struct device_attribute *attr, char *buf)
558 struct Scsi_Host *shost = class_to_shost(dev);
560 h = shost_to_hba(shost);
561 return snprintf(buf, 30, "HP SSD Smart Path %s\n",
562 (h->acciopath_status == 1) ? "enabled" : "disabled");
565 /* List of controllers which cannot be hard reset on kexec with reset_devices */
566 static u32 unresettable_controller[] = {
567 0x324a103C, /* Smart Array P712m */
568 0x324b103C, /* Smart Array P711m */
569 0x3223103C, /* Smart Array P800 */
570 0x3234103C, /* Smart Array P400 */
571 0x3235103C, /* Smart Array P400i */
572 0x3211103C, /* Smart Array E200i */
573 0x3212103C, /* Smart Array E200 */
574 0x3213103C, /* Smart Array E200i */
575 0x3214103C, /* Smart Array E200i */
576 0x3215103C, /* Smart Array E200i */
577 0x3237103C, /* Smart Array E500 */
578 0x323D103C, /* Smart Array P700m */
579 0x40800E11, /* Smart Array 5i */
580 0x409C0E11, /* Smart Array 6400 */
581 0x409D0E11, /* Smart Array 6400 EM */
582 0x40700E11, /* Smart Array 5300 */
583 0x40820E11, /* Smart Array 532 */
584 0x40830E11, /* Smart Array 5312 */
585 0x409A0E11, /* Smart Array 641 */
586 0x409B0E11, /* Smart Array 642 */
587 0x40910E11, /* Smart Array 6i */
590 /* List of controllers which cannot even be soft reset */
591 static u32 soft_unresettable_controller[] = {
592 0x40800E11, /* Smart Array 5i */
593 0x40700E11, /* Smart Array 5300 */
594 0x40820E11, /* Smart Array 532 */
595 0x40830E11, /* Smart Array 5312 */
596 0x409A0E11, /* Smart Array 641 */
597 0x409B0E11, /* Smart Array 642 */
598 0x40910E11, /* Smart Array 6i */
599 /* Exclude 640x boards. These are two pci devices in one slot
600 * which share a battery backed cache module. One controls the
601 * cache, the other accesses the cache through the one that controls
602 * it. If we reset the one controlling the cache, the other will
603 * likely not be happy. Just forbid resetting this conjoined mess.
604 * The 640x isn't really supported by hpsa anyway.
606 0x409C0E11, /* Smart Array 6400 */
607 0x409D0E11, /* Smart Array 6400 EM */
610 static int board_id_in_array(u32 a[], int nelems, u32 board_id)
614 for (i = 0; i < nelems; i++)
615 if (a[i] == board_id)
620 static int ctlr_is_hard_resettable(u32 board_id)
622 return !board_id_in_array(unresettable_controller,
623 ARRAY_SIZE(unresettable_controller), board_id);
626 static int ctlr_is_soft_resettable(u32 board_id)
628 return !board_id_in_array(soft_unresettable_controller,
629 ARRAY_SIZE(soft_unresettable_controller), board_id);
632 static int ctlr_is_resettable(u32 board_id)
634 return ctlr_is_hard_resettable(board_id) ||
635 ctlr_is_soft_resettable(board_id);
638 static ssize_t host_show_resettable(struct device *dev,
639 struct device_attribute *attr, char *buf)
642 struct Scsi_Host *shost = class_to_shost(dev);
644 h = shost_to_hba(shost);
645 return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id));
648 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[])
650 return (scsi3addr[3] & 0xC0) == 0x40;
653 static const char * const raid_label[] = { "0", "4", "1(+0)", "5", "5+1", "6",
654 "1(+0)ADM", "UNKNOWN", "PHYS DRV"
656 #define HPSA_RAID_0 0
657 #define HPSA_RAID_4 1
658 #define HPSA_RAID_1 2 /* also used for RAID 10 */
659 #define HPSA_RAID_5 3 /* also used for RAID 50 */
660 #define HPSA_RAID_51 4
661 #define HPSA_RAID_6 5 /* also used for RAID 60 */
662 #define HPSA_RAID_ADM 6 /* also used for RAID 1+0 ADM */
663 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 2)
664 #define PHYSICAL_DRIVE (ARRAY_SIZE(raid_label) - 1)
666 static inline bool is_logical_device(struct hpsa_scsi_dev_t *device)
668 return !device->physical_device;
671 static ssize_t raid_level_show(struct device *dev,
672 struct device_attribute *attr, char *buf)
675 unsigned char rlevel;
677 struct scsi_device *sdev;
678 struct hpsa_scsi_dev_t *hdev;
681 sdev = to_scsi_device(dev);
682 h = sdev_to_hba(sdev);
683 spin_lock_irqsave(&h->lock, flags);
684 hdev = sdev->hostdata;
686 spin_unlock_irqrestore(&h->lock, flags);
690 /* Is this even a logical drive? */
691 if (!is_logical_device(hdev)) {
692 spin_unlock_irqrestore(&h->lock, flags);
693 l = snprintf(buf, PAGE_SIZE, "N/A\n");
697 rlevel = hdev->raid_level;
698 spin_unlock_irqrestore(&h->lock, flags);
699 if (rlevel > RAID_UNKNOWN)
700 rlevel = RAID_UNKNOWN;
701 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]);
705 static ssize_t lunid_show(struct device *dev,
706 struct device_attribute *attr, char *buf)
709 struct scsi_device *sdev;
710 struct hpsa_scsi_dev_t *hdev;
712 unsigned char lunid[8];
714 sdev = to_scsi_device(dev);
715 h = sdev_to_hba(sdev);
716 spin_lock_irqsave(&h->lock, flags);
717 hdev = sdev->hostdata;
719 spin_unlock_irqrestore(&h->lock, flags);
722 memcpy(lunid, hdev->scsi3addr, sizeof(lunid));
723 spin_unlock_irqrestore(&h->lock, flags);
724 return snprintf(buf, 20, "0x%8phN\n", lunid);
727 static ssize_t unique_id_show(struct device *dev,
728 struct device_attribute *attr, char *buf)
731 struct scsi_device *sdev;
732 struct hpsa_scsi_dev_t *hdev;
734 unsigned char sn[16];
736 sdev = to_scsi_device(dev);
737 h = sdev_to_hba(sdev);
738 spin_lock_irqsave(&h->lock, flags);
739 hdev = sdev->hostdata;
741 spin_unlock_irqrestore(&h->lock, flags);
744 memcpy(sn, hdev->device_id, sizeof(sn));
745 spin_unlock_irqrestore(&h->lock, flags);
746 return snprintf(buf, 16 * 2 + 2,
747 "%02X%02X%02X%02X%02X%02X%02X%02X"
748 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
749 sn[0], sn[1], sn[2], sn[3],
750 sn[4], sn[5], sn[6], sn[7],
751 sn[8], sn[9], sn[10], sn[11],
752 sn[12], sn[13], sn[14], sn[15]);
755 static ssize_t sas_address_show(struct device *dev,
756 struct device_attribute *attr, char *buf)
759 struct scsi_device *sdev;
760 struct hpsa_scsi_dev_t *hdev;
764 sdev = to_scsi_device(dev);
765 h = sdev_to_hba(sdev);
766 spin_lock_irqsave(&h->lock, flags);
767 hdev = sdev->hostdata;
768 if (!hdev || is_logical_device(hdev) || !hdev->expose_device) {
769 spin_unlock_irqrestore(&h->lock, flags);
772 sas_address = hdev->sas_address;
773 spin_unlock_irqrestore(&h->lock, flags);
775 return snprintf(buf, PAGE_SIZE, "0x%016llx\n", sas_address);
778 static ssize_t host_show_hp_ssd_smart_path_enabled(struct device *dev,
779 struct device_attribute *attr, char *buf)
782 struct scsi_device *sdev;
783 struct hpsa_scsi_dev_t *hdev;
787 sdev = to_scsi_device(dev);
788 h = sdev_to_hba(sdev);
789 spin_lock_irqsave(&h->lock, flags);
790 hdev = sdev->hostdata;
792 spin_unlock_irqrestore(&h->lock, flags);
795 offload_enabled = hdev->offload_enabled;
796 spin_unlock_irqrestore(&h->lock, flags);
798 if (hdev->devtype == TYPE_DISK || hdev->devtype == TYPE_ZBC)
799 return snprintf(buf, 20, "%d\n", offload_enabled);
801 return snprintf(buf, 40, "%s\n",
802 "Not applicable for a controller");
806 static ssize_t path_info_show(struct device *dev,
807 struct device_attribute *attr, char *buf)
810 struct scsi_device *sdev;
811 struct hpsa_scsi_dev_t *hdev;
817 u8 path_map_index = 0;
819 unsigned char phys_connector[2];
821 sdev = to_scsi_device(dev);
822 h = sdev_to_hba(sdev);
823 spin_lock_irqsave(&h->devlock, flags);
824 hdev = sdev->hostdata;
826 spin_unlock_irqrestore(&h->devlock, flags);
831 for (i = 0; i < MAX_PATHS; i++) {
832 path_map_index = 1<<i;
833 if (i == hdev->active_path_index)
835 else if (hdev->path_map & path_map_index)
840 output_len += scnprintf(buf + output_len,
841 PAGE_SIZE - output_len,
842 "[%d:%d:%d:%d] %20.20s ",
843 h->scsi_host->host_no,
844 hdev->bus, hdev->target, hdev->lun,
845 scsi_device_type(hdev->devtype));
847 if (hdev->devtype == TYPE_RAID || is_logical_device(hdev)) {
848 output_len += scnprintf(buf + output_len,
849 PAGE_SIZE - output_len,
855 memcpy(&phys_connector, &hdev->phys_connector[i],
856 sizeof(phys_connector));
857 if (phys_connector[0] < '0')
858 phys_connector[0] = '0';
859 if (phys_connector[1] < '0')
860 phys_connector[1] = '0';
861 output_len += scnprintf(buf + output_len,
862 PAGE_SIZE - output_len,
865 if ((hdev->devtype == TYPE_DISK || hdev->devtype == TYPE_ZBC) &&
866 hdev->expose_device) {
867 if (box == 0 || box == 0xFF) {
868 output_len += scnprintf(buf + output_len,
869 PAGE_SIZE - output_len,
873 output_len += scnprintf(buf + output_len,
874 PAGE_SIZE - output_len,
875 "BOX: %hhu BAY: %hhu %s\n",
878 } else if (box != 0 && box != 0xFF) {
879 output_len += scnprintf(buf + output_len,
880 PAGE_SIZE - output_len, "BOX: %hhu %s\n",
883 output_len += scnprintf(buf + output_len,
884 PAGE_SIZE - output_len, "%s\n", active);
887 spin_unlock_irqrestore(&h->devlock, flags);
891 static ssize_t host_show_ctlr_num(struct device *dev,
892 struct device_attribute *attr, char *buf)
895 struct Scsi_Host *shost = class_to_shost(dev);
897 h = shost_to_hba(shost);
898 return snprintf(buf, 20, "%d\n", h->ctlr);
901 static ssize_t host_show_legacy_board(struct device *dev,
902 struct device_attribute *attr, char *buf)
905 struct Scsi_Host *shost = class_to_shost(dev);
907 h = shost_to_hba(shost);
908 return snprintf(buf, 20, "%d\n", h->legacy_board ? 1 : 0);
911 static DEVICE_ATTR_RO(raid_level);
912 static DEVICE_ATTR_RO(lunid);
913 static DEVICE_ATTR_RO(unique_id);
914 static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
915 static DEVICE_ATTR_RO(sas_address);
916 static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO,
917 host_show_hp_ssd_smart_path_enabled, NULL);
918 static DEVICE_ATTR_RO(path_info);
919 static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH,
920 host_show_hp_ssd_smart_path_status,
921 host_store_hp_ssd_smart_path_status);
922 static DEVICE_ATTR(raid_offload_debug, S_IWUSR, NULL,
923 host_store_raid_offload_debug);
924 static DEVICE_ATTR(firmware_revision, S_IRUGO,
925 host_show_firmware_revision, NULL);
926 static DEVICE_ATTR(commands_outstanding, S_IRUGO,
927 host_show_commands_outstanding, NULL);
928 static DEVICE_ATTR(transport_mode, S_IRUGO,
929 host_show_transport_mode, NULL);
930 static DEVICE_ATTR(resettable, S_IRUGO,
931 host_show_resettable, NULL);
932 static DEVICE_ATTR(lockup_detected, S_IRUGO,
933 host_show_lockup_detected, NULL);
934 static DEVICE_ATTR(ctlr_num, S_IRUGO,
935 host_show_ctlr_num, NULL);
936 static DEVICE_ATTR(legacy_board, S_IRUGO,
937 host_show_legacy_board, NULL);
939 static struct device_attribute *hpsa_sdev_attrs[] = {
940 &dev_attr_raid_level,
943 &dev_attr_hp_ssd_smart_path_enabled,
945 &dev_attr_sas_address,
949 static struct device_attribute *hpsa_shost_attrs[] = {
951 &dev_attr_firmware_revision,
952 &dev_attr_commands_outstanding,
953 &dev_attr_transport_mode,
954 &dev_attr_resettable,
955 &dev_attr_hp_ssd_smart_path_status,
956 &dev_attr_raid_offload_debug,
957 &dev_attr_lockup_detected,
959 &dev_attr_legacy_board,
963 #define HPSA_NRESERVED_CMDS (HPSA_CMDS_RESERVED_FOR_DRIVER +\
964 HPSA_MAX_CONCURRENT_PASSTHRUS)
966 static struct scsi_host_template hpsa_driver_template = {
967 .module = THIS_MODULE,
970 .queuecommand = hpsa_scsi_queue_command,
971 .scan_start = hpsa_scan_start,
972 .scan_finished = hpsa_scan_finished,
973 .change_queue_depth = hpsa_change_queue_depth,
975 .eh_device_reset_handler = hpsa_eh_device_reset_handler,
977 .slave_alloc = hpsa_slave_alloc,
978 .slave_configure = hpsa_slave_configure,
979 .slave_destroy = hpsa_slave_destroy,
981 .compat_ioctl = hpsa_compat_ioctl,
983 .sdev_attrs = hpsa_sdev_attrs,
984 .shost_attrs = hpsa_shost_attrs,
989 static inline u32 next_command(struct ctlr_info *h, u8 q)
992 struct reply_queue_buffer *rq = &h->reply_queue[q];
994 if (h->transMethod & CFGTBL_Trans_io_accel1)
995 return h->access.command_completed(h, q);
997 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
998 return h->access.command_completed(h, q);
1000 if ((rq->head[rq->current_entry] & 1) == rq->wraparound) {
1001 a = rq->head[rq->current_entry];
1002 rq->current_entry++;
1003 atomic_dec(&h->commands_outstanding);
1007 /* Check for wraparound */
1008 if (rq->current_entry == h->max_commands) {
1009 rq->current_entry = 0;
1010 rq->wraparound ^= 1;
1016 * There are some special bits in the bus address of the
1017 * command that we have to set for the controller to know
1018 * how to process the command:
1020 * Normal performant mode:
1021 * bit 0: 1 means performant mode, 0 means simple mode.
1022 * bits 1-3 = block fetch table entry
1023 * bits 4-6 = command type (== 0)
1026 * bit 0 = "performant mode" bit.
1027 * bits 1-3 = block fetch table entry
1028 * bits 4-6 = command type (== 110)
1029 * (command type is needed because ioaccel1 mode
1030 * commands are submitted through the same register as normal
1031 * mode commands, so this is how the controller knows whether
1032 * the command is normal mode or ioaccel1 mode.)
1035 * bit 0 = "performant mode" bit.
1036 * bits 1-4 = block fetch table entry (note extra bit)
1037 * bits 4-6 = not needed, because ioaccel2 mode has
1038 * a separate special register for submitting commands.
1042 * set_performant_mode: Modify the tag for cciss performant
1043 * set bit 0 for pull model, bits 3-1 for block fetch
1046 #define DEFAULT_REPLY_QUEUE (-1)
1047 static void set_performant_mode(struct ctlr_info *h, struct CommandList *c,
1050 if (likely(h->transMethod & CFGTBL_Trans_Performant)) {
1051 c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1);
1052 if (unlikely(!h->msix_vectors))
1054 c->Header.ReplyQueue = reply_queue;
1058 static void set_ioaccel1_performant_mode(struct ctlr_info *h,
1059 struct CommandList *c,
1062 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
1065 * Tell the controller to post the reply to the queue for this
1066 * processor. This seems to give the best I/O throughput.
1068 cp->ReplyQueue = reply_queue;
1070 * Set the bits in the address sent down to include:
1071 * - performant mode bit (bit 0)
1072 * - pull count (bits 1-3)
1073 * - command type (bits 4-6)
1075 c->busaddr |= 1 | (h->ioaccel1_blockFetchTable[c->Header.SGList] << 1) |
1076 IOACCEL1_BUSADDR_CMDTYPE;
1079 static void set_ioaccel2_tmf_performant_mode(struct ctlr_info *h,
1080 struct CommandList *c,
1083 struct hpsa_tmf_struct *cp = (struct hpsa_tmf_struct *)
1084 &h->ioaccel2_cmd_pool[c->cmdindex];
1086 /* Tell the controller to post the reply to the queue for this
1087 * processor. This seems to give the best I/O throughput.
1089 cp->reply_queue = reply_queue;
1090 /* Set the bits in the address sent down to include:
1091 * - performant mode bit not used in ioaccel mode 2
1092 * - pull count (bits 0-3)
1093 * - command type isn't needed for ioaccel2
1095 c->busaddr |= h->ioaccel2_blockFetchTable[0];
1098 static void set_ioaccel2_performant_mode(struct ctlr_info *h,
1099 struct CommandList *c,
1102 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
1105 * Tell the controller to post the reply to the queue for this
1106 * processor. This seems to give the best I/O throughput.
1108 cp->reply_queue = reply_queue;
1110 * Set the bits in the address sent down to include:
1111 * - performant mode bit not used in ioaccel mode 2
1112 * - pull count (bits 0-3)
1113 * - command type isn't needed for ioaccel2
1115 c->busaddr |= (h->ioaccel2_blockFetchTable[cp->sg_count]);
1118 static int is_firmware_flash_cmd(u8 *cdb)
1120 return cdb[0] == BMIC_WRITE && cdb[6] == BMIC_FLASH_FIRMWARE;
1124 * During firmware flash, the heartbeat register may not update as frequently
1125 * as it should. So we dial down lockup detection during firmware flash. and
1126 * dial it back up when firmware flash completes.
1128 #define HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH (240 * HZ)
1129 #define HEARTBEAT_SAMPLE_INTERVAL (30 * HZ)
1130 #define HPSA_EVENT_MONITOR_INTERVAL (15 * HZ)
1131 static void dial_down_lockup_detection_during_fw_flash(struct ctlr_info *h,
1132 struct CommandList *c)
1134 if (!is_firmware_flash_cmd(c->Request.CDB))
1136 atomic_inc(&h->firmware_flash_in_progress);
1137 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH;
1140 static void dial_up_lockup_detection_on_fw_flash_complete(struct ctlr_info *h,
1141 struct CommandList *c)
1143 if (is_firmware_flash_cmd(c->Request.CDB) &&
1144 atomic_dec_and_test(&h->firmware_flash_in_progress))
1145 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
1148 static void __enqueue_cmd_and_start_io(struct ctlr_info *h,
1149 struct CommandList *c, int reply_queue)
1151 dial_down_lockup_detection_during_fw_flash(h, c);
1152 atomic_inc(&h->commands_outstanding);
1154 atomic_inc(&c->device->commands_outstanding);
1156 reply_queue = h->reply_map[raw_smp_processor_id()];
1157 switch (c->cmd_type) {
1159 set_ioaccel1_performant_mode(h, c, reply_queue);
1160 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
1163 set_ioaccel2_performant_mode(h, c, reply_queue);
1164 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
1167 set_ioaccel2_tmf_performant_mode(h, c, reply_queue);
1168 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
1171 set_performant_mode(h, c, reply_queue);
1172 h->access.submit_command(h, c);
1176 static void enqueue_cmd_and_start_io(struct ctlr_info *h, struct CommandList *c)
1178 __enqueue_cmd_and_start_io(h, c, DEFAULT_REPLY_QUEUE);
1181 static inline int is_hba_lunid(unsigned char scsi3addr[])
1183 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0;
1186 static inline int is_scsi_rev_5(struct ctlr_info *h)
1188 if (!h->hba_inquiry_data)
1190 if ((h->hba_inquiry_data[2] & 0x07) == 5)
1195 static int hpsa_find_target_lun(struct ctlr_info *h,
1196 unsigned char scsi3addr[], int bus, int *target, int *lun)
1198 /* finds an unused bus, target, lun for a new physical device
1199 * assumes h->devlock is held
1202 DECLARE_BITMAP(lun_taken, HPSA_MAX_DEVICES);
1204 bitmap_zero(lun_taken, HPSA_MAX_DEVICES);
1206 for (i = 0; i < h->ndevices; i++) {
1207 if (h->dev[i]->bus == bus && h->dev[i]->target != -1)
1208 __set_bit(h->dev[i]->target, lun_taken);
1211 i = find_first_zero_bit(lun_taken, HPSA_MAX_DEVICES);
1212 if (i < HPSA_MAX_DEVICES) {
1221 static void hpsa_show_dev_msg(const char *level, struct ctlr_info *h,
1222 struct hpsa_scsi_dev_t *dev, char *description)
1224 #define LABEL_SIZE 25
1225 char label[LABEL_SIZE];
1227 if (h == NULL || h->pdev == NULL || h->scsi_host == NULL)
1230 switch (dev->devtype) {
1232 snprintf(label, LABEL_SIZE, "controller");
1234 case TYPE_ENCLOSURE:
1235 snprintf(label, LABEL_SIZE, "enclosure");
1240 snprintf(label, LABEL_SIZE, "external");
1241 else if (!is_logical_dev_addr_mode(dev->scsi3addr))
1242 snprintf(label, LABEL_SIZE, "%s",
1243 raid_label[PHYSICAL_DRIVE]);
1245 snprintf(label, LABEL_SIZE, "RAID-%s",
1246 dev->raid_level > RAID_UNKNOWN ? "?" :
1247 raid_label[dev->raid_level]);
1250 snprintf(label, LABEL_SIZE, "rom");
1253 snprintf(label, LABEL_SIZE, "tape");
1255 case TYPE_MEDIUM_CHANGER:
1256 snprintf(label, LABEL_SIZE, "changer");
1259 snprintf(label, LABEL_SIZE, "UNKNOWN");
1263 dev_printk(level, &h->pdev->dev,
1264 "scsi %d:%d:%d:%d: %s %s %.8s %.16s %s SSDSmartPathCap%c En%c Exp=%d\n",
1265 h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
1267 scsi_device_type(dev->devtype),
1271 dev->offload_config ? '+' : '-',
1272 dev->offload_to_be_enabled ? '+' : '-',
1273 dev->expose_device);
1276 /* Add an entry into h->dev[] array. */
1277 static int hpsa_scsi_add_entry(struct ctlr_info *h,
1278 struct hpsa_scsi_dev_t *device,
1279 struct hpsa_scsi_dev_t *added[], int *nadded)
1281 /* assumes h->devlock is held */
1282 int n = h->ndevices;
1284 unsigned char addr1[8], addr2[8];
1285 struct hpsa_scsi_dev_t *sd;
1287 if (n >= HPSA_MAX_DEVICES) {
1288 dev_err(&h->pdev->dev, "too many devices, some will be "
1293 /* physical devices do not have lun or target assigned until now. */
1294 if (device->lun != -1)
1295 /* Logical device, lun is already assigned. */
1298 /* If this device a non-zero lun of a multi-lun device
1299 * byte 4 of the 8-byte LUN addr will contain the logical
1300 * unit no, zero otherwise.
1302 if (device->scsi3addr[4] == 0) {
1303 /* This is not a non-zero lun of a multi-lun device */
1304 if (hpsa_find_target_lun(h, device->scsi3addr,
1305 device->bus, &device->target, &device->lun) != 0)
1310 /* This is a non-zero lun of a multi-lun device.
1311 * Search through our list and find the device which
1312 * has the same 8 byte LUN address, excepting byte 4 and 5.
1313 * Assign the same bus and target for this new LUN.
1314 * Use the logical unit number from the firmware.
1316 memcpy(addr1, device->scsi3addr, 8);
1319 for (i = 0; i < n; i++) {
1321 memcpy(addr2, sd->scsi3addr, 8);
1324 /* differ only in byte 4 and 5? */
1325 if (memcmp(addr1, addr2, 8) == 0) {
1326 device->bus = sd->bus;
1327 device->target = sd->target;
1328 device->lun = device->scsi3addr[4];
1332 if (device->lun == -1) {
1333 dev_warn(&h->pdev->dev, "physical device with no LUN=0,"
1334 " suspect firmware bug or unsupported hardware "
1335 "configuration.\n");
1343 added[*nadded] = device;
1345 hpsa_show_dev_msg(KERN_INFO, h, device,
1346 device->expose_device ? "added" : "masked");
1351 * Called during a scan operation.
1353 * Update an entry in h->dev[] array.
1355 static void hpsa_scsi_update_entry(struct ctlr_info *h,
1356 int entry, struct hpsa_scsi_dev_t *new_entry)
1358 /* assumes h->devlock is held */
1359 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1361 /* Raid level changed. */
1362 h->dev[entry]->raid_level = new_entry->raid_level;
1365 * ioacccel_handle may have changed for a dual domain disk
1367 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1369 /* Raid offload parameters changed. Careful about the ordering. */
1370 if (new_entry->offload_config && new_entry->offload_to_be_enabled) {
1372 * if drive is newly offload_enabled, we want to copy the
1373 * raid map data first. If previously offload_enabled and
1374 * offload_config were set, raid map data had better be
1375 * the same as it was before. If raid map data has changed
1376 * then it had better be the case that
1377 * h->dev[entry]->offload_enabled is currently 0.
1379 h->dev[entry]->raid_map = new_entry->raid_map;
1380 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1382 if (new_entry->offload_to_be_enabled) {
1383 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1384 wmb(); /* set ioaccel_handle *before* hba_ioaccel_enabled */
1386 h->dev[entry]->hba_ioaccel_enabled = new_entry->hba_ioaccel_enabled;
1387 h->dev[entry]->offload_config = new_entry->offload_config;
1388 h->dev[entry]->offload_to_mirror = new_entry->offload_to_mirror;
1389 h->dev[entry]->queue_depth = new_entry->queue_depth;
1392 * We can turn off ioaccel offload now, but need to delay turning
1393 * ioaccel on until we can update h->dev[entry]->phys_disk[], but we
1394 * can't do that until all the devices are updated.
1396 h->dev[entry]->offload_to_be_enabled = new_entry->offload_to_be_enabled;
1399 * turn ioaccel off immediately if told to do so.
1401 if (!new_entry->offload_to_be_enabled)
1402 h->dev[entry]->offload_enabled = 0;
1404 hpsa_show_dev_msg(KERN_INFO, h, h->dev[entry], "updated");
1407 /* Replace an entry from h->dev[] array. */
1408 static void hpsa_scsi_replace_entry(struct ctlr_info *h,
1409 int entry, struct hpsa_scsi_dev_t *new_entry,
1410 struct hpsa_scsi_dev_t *added[], int *nadded,
1411 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1413 /* assumes h->devlock is held */
1414 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1415 removed[*nremoved] = h->dev[entry];
1419 * New physical devices won't have target/lun assigned yet
1420 * so we need to preserve the values in the slot we are replacing.
1422 if (new_entry->target == -1) {
1423 new_entry->target = h->dev[entry]->target;
1424 new_entry->lun = h->dev[entry]->lun;
1427 h->dev[entry] = new_entry;
1428 added[*nadded] = new_entry;
1431 hpsa_show_dev_msg(KERN_INFO, h, new_entry, "replaced");
1434 /* Remove an entry from h->dev[] array. */
1435 static void hpsa_scsi_remove_entry(struct ctlr_info *h, int entry,
1436 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1438 /* assumes h->devlock is held */
1440 struct hpsa_scsi_dev_t *sd;
1442 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1445 removed[*nremoved] = h->dev[entry];
1448 for (i = entry; i < h->ndevices-1; i++)
1449 h->dev[i] = h->dev[i+1];
1451 hpsa_show_dev_msg(KERN_INFO, h, sd, "removed");
1454 #define SCSI3ADDR_EQ(a, b) ( \
1455 (a)[7] == (b)[7] && \
1456 (a)[6] == (b)[6] && \
1457 (a)[5] == (b)[5] && \
1458 (a)[4] == (b)[4] && \
1459 (a)[3] == (b)[3] && \
1460 (a)[2] == (b)[2] && \
1461 (a)[1] == (b)[1] && \
1464 static void fixup_botched_add(struct ctlr_info *h,
1465 struct hpsa_scsi_dev_t *added)
1467 /* called when scsi_add_device fails in order to re-adjust
1468 * h->dev[] to match the mid layer's view.
1470 unsigned long flags;
1473 spin_lock_irqsave(&h->lock, flags);
1474 for (i = 0; i < h->ndevices; i++) {
1475 if (h->dev[i] == added) {
1476 for (j = i; j < h->ndevices-1; j++)
1477 h->dev[j] = h->dev[j+1];
1482 spin_unlock_irqrestore(&h->lock, flags);
1486 static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1,
1487 struct hpsa_scsi_dev_t *dev2)
1489 /* we compare everything except lun and target as these
1490 * are not yet assigned. Compare parts likely
1493 if (memcmp(dev1->scsi3addr, dev2->scsi3addr,
1494 sizeof(dev1->scsi3addr)) != 0)
1496 if (memcmp(dev1->device_id, dev2->device_id,
1497 sizeof(dev1->device_id)) != 0)
1499 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0)
1501 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0)
1503 if (dev1->devtype != dev2->devtype)
1505 if (dev1->bus != dev2->bus)
1510 static inline int device_updated(struct hpsa_scsi_dev_t *dev1,
1511 struct hpsa_scsi_dev_t *dev2)
1513 /* Device attributes that can change, but don't mean
1514 * that the device is a different device, nor that the OS
1515 * needs to be told anything about the change.
1517 if (dev1->raid_level != dev2->raid_level)
1519 if (dev1->offload_config != dev2->offload_config)
1521 if (dev1->offload_to_be_enabled != dev2->offload_to_be_enabled)
1523 if (!is_logical_dev_addr_mode(dev1->scsi3addr))
1524 if (dev1->queue_depth != dev2->queue_depth)
1527 * This can happen for dual domain devices. An active
1528 * path change causes the ioaccel handle to change
1530 * for example note the handle differences between p0 and p1
1531 * Device WWN ,WWN hash,Handle
1532 * D016 p0|0x3 [02]P2E:01:01,0x5000C5005FC4DACA,0x9B5616,0x01030003
1533 * p1 0x5000C5005FC4DAC9,0x6798C0,0x00040004
1535 if (dev1->ioaccel_handle != dev2->ioaccel_handle)
1540 /* Find needle in haystack. If exact match found, return DEVICE_SAME,
1541 * and return needle location in *index. If scsi3addr matches, but not
1542 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
1543 * location in *index.
1544 * In the case of a minor device attribute change, such as RAID level, just
1545 * return DEVICE_UPDATED, along with the updated device's location in index.
1546 * If needle not found, return DEVICE_NOT_FOUND.
1548 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle,
1549 struct hpsa_scsi_dev_t *haystack[], int haystack_size,
1553 #define DEVICE_NOT_FOUND 0
1554 #define DEVICE_CHANGED 1
1555 #define DEVICE_SAME 2
1556 #define DEVICE_UPDATED 3
1558 return DEVICE_NOT_FOUND;
1560 for (i = 0; i < haystack_size; i++) {
1561 if (haystack[i] == NULL) /* previously removed. */
1563 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) {
1565 if (device_is_the_same(needle, haystack[i])) {
1566 if (device_updated(needle, haystack[i]))
1567 return DEVICE_UPDATED;
1570 /* Keep offline devices offline */
1571 if (needle->volume_offline)
1572 return DEVICE_NOT_FOUND;
1573 return DEVICE_CHANGED;
1578 return DEVICE_NOT_FOUND;
1581 static void hpsa_monitor_offline_device(struct ctlr_info *h,
1582 unsigned char scsi3addr[])
1584 struct offline_device_entry *device;
1585 unsigned long flags;
1587 /* Check to see if device is already on the list */
1588 spin_lock_irqsave(&h->offline_device_lock, flags);
1589 list_for_each_entry(device, &h->offline_device_list, offline_list) {
1590 if (memcmp(device->scsi3addr, scsi3addr,
1591 sizeof(device->scsi3addr)) == 0) {
1592 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1596 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1598 /* Device is not on the list, add it. */
1599 device = kmalloc(sizeof(*device), GFP_KERNEL);
1603 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
1604 spin_lock_irqsave(&h->offline_device_lock, flags);
1605 list_add_tail(&device->offline_list, &h->offline_device_list);
1606 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1609 /* Print a message explaining various offline volume states */
1610 static void hpsa_show_volume_status(struct ctlr_info *h,
1611 struct hpsa_scsi_dev_t *sd)
1613 if (sd->volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED)
1614 dev_info(&h->pdev->dev,
1615 "C%d:B%d:T%d:L%d Volume status is not available through vital product data pages.\n",
1616 h->scsi_host->host_no,
1617 sd->bus, sd->target, sd->lun);
1618 switch (sd->volume_offline) {
1621 case HPSA_LV_UNDERGOING_ERASE:
1622 dev_info(&h->pdev->dev,
1623 "C%d:B%d:T%d:L%d Volume is undergoing background erase process.\n",
1624 h->scsi_host->host_no,
1625 sd->bus, sd->target, sd->lun);
1627 case HPSA_LV_NOT_AVAILABLE:
1628 dev_info(&h->pdev->dev,
1629 "C%d:B%d:T%d:L%d Volume is waiting for transforming volume.\n",
1630 h->scsi_host->host_no,
1631 sd->bus, sd->target, sd->lun);
1633 case HPSA_LV_UNDERGOING_RPI:
1634 dev_info(&h->pdev->dev,
1635 "C%d:B%d:T%d:L%d Volume is undergoing rapid parity init.\n",
1636 h->scsi_host->host_no,
1637 sd->bus, sd->target, sd->lun);
1639 case HPSA_LV_PENDING_RPI:
1640 dev_info(&h->pdev->dev,
1641 "C%d:B%d:T%d:L%d Volume is queued for rapid parity initialization process.\n",
1642 h->scsi_host->host_no,
1643 sd->bus, sd->target, sd->lun);
1645 case HPSA_LV_ENCRYPTED_NO_KEY:
1646 dev_info(&h->pdev->dev,
1647 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because key is not present.\n",
1648 h->scsi_host->host_no,
1649 sd->bus, sd->target, sd->lun);
1651 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
1652 dev_info(&h->pdev->dev,
1653 "C%d:B%d:T%d:L%d Volume is not encrypted and cannot be accessed because controller is in encryption-only mode.\n",
1654 h->scsi_host->host_no,
1655 sd->bus, sd->target, sd->lun);
1657 case HPSA_LV_UNDERGOING_ENCRYPTION:
1658 dev_info(&h->pdev->dev,
1659 "C%d:B%d:T%d:L%d Volume is undergoing encryption process.\n",
1660 h->scsi_host->host_no,
1661 sd->bus, sd->target, sd->lun);
1663 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
1664 dev_info(&h->pdev->dev,
1665 "C%d:B%d:T%d:L%d Volume is undergoing encryption re-keying process.\n",
1666 h->scsi_host->host_no,
1667 sd->bus, sd->target, sd->lun);
1669 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
1670 dev_info(&h->pdev->dev,
1671 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because controller does not have encryption enabled.\n",
1672 h->scsi_host->host_no,
1673 sd->bus, sd->target, sd->lun);
1675 case HPSA_LV_PENDING_ENCRYPTION:
1676 dev_info(&h->pdev->dev,
1677 "C%d:B%d:T%d:L%d Volume is pending migration to encrypted state, but process has not started.\n",
1678 h->scsi_host->host_no,
1679 sd->bus, sd->target, sd->lun);
1681 case HPSA_LV_PENDING_ENCRYPTION_REKEYING:
1682 dev_info(&h->pdev->dev,
1683 "C%d:B%d:T%d:L%d Volume is encrypted and is pending encryption rekeying.\n",
1684 h->scsi_host->host_no,
1685 sd->bus, sd->target, sd->lun);
1691 * Figure the list of physical drive pointers for a logical drive with
1692 * raid offload configured.
1694 static void hpsa_figure_phys_disk_ptrs(struct ctlr_info *h,
1695 struct hpsa_scsi_dev_t *dev[], int ndevices,
1696 struct hpsa_scsi_dev_t *logical_drive)
1698 struct raid_map_data *map = &logical_drive->raid_map;
1699 struct raid_map_disk_data *dd = &map->data[0];
1701 int total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
1702 le16_to_cpu(map->metadata_disks_per_row);
1703 int nraid_map_entries = le16_to_cpu(map->row_cnt) *
1704 le16_to_cpu(map->layout_map_count) *
1705 total_disks_per_row;
1706 int nphys_disk = le16_to_cpu(map->layout_map_count) *
1707 total_disks_per_row;
1710 if (nraid_map_entries > RAID_MAP_MAX_ENTRIES)
1711 nraid_map_entries = RAID_MAP_MAX_ENTRIES;
1713 logical_drive->nphysical_disks = nraid_map_entries;
1716 for (i = 0; i < nraid_map_entries; i++) {
1717 logical_drive->phys_disk[i] = NULL;
1718 if (!logical_drive->offload_config)
1720 for (j = 0; j < ndevices; j++) {
1723 if (dev[j]->devtype != TYPE_DISK &&
1724 dev[j]->devtype != TYPE_ZBC)
1726 if (is_logical_device(dev[j]))
1728 if (dev[j]->ioaccel_handle != dd[i].ioaccel_handle)
1731 logical_drive->phys_disk[i] = dev[j];
1733 qdepth = min(h->nr_cmds, qdepth +
1734 logical_drive->phys_disk[i]->queue_depth);
1739 * This can happen if a physical drive is removed and
1740 * the logical drive is degraded. In that case, the RAID
1741 * map data will refer to a physical disk which isn't actually
1742 * present. And in that case offload_enabled should already
1743 * be 0, but we'll turn it off here just in case
1745 if (!logical_drive->phys_disk[i]) {
1746 dev_warn(&h->pdev->dev,
1747 "%s: [%d:%d:%d:%d] A phys disk component of LV is missing, turning off offload_enabled for LV.\n",
1749 h->scsi_host->host_no, logical_drive->bus,
1750 logical_drive->target, logical_drive->lun);
1751 hpsa_turn_off_ioaccel_for_device(logical_drive);
1752 logical_drive->queue_depth = 8;
1755 if (nraid_map_entries)
1757 * This is correct for reads, too high for full stripe writes,
1758 * way too high for partial stripe writes
1760 logical_drive->queue_depth = qdepth;
1762 if (logical_drive->external)
1763 logical_drive->queue_depth = EXTERNAL_QD;
1765 logical_drive->queue_depth = h->nr_cmds;
1769 static void hpsa_update_log_drive_phys_drive_ptrs(struct ctlr_info *h,
1770 struct hpsa_scsi_dev_t *dev[], int ndevices)
1774 for (i = 0; i < ndevices; i++) {
1777 if (dev[i]->devtype != TYPE_DISK &&
1778 dev[i]->devtype != TYPE_ZBC)
1780 if (!is_logical_device(dev[i]))
1784 * If offload is currently enabled, the RAID map and
1785 * phys_disk[] assignment *better* not be changing
1786 * because we would be changing ioaccel phsy_disk[] pointers
1787 * on a ioaccel volume processing I/O requests.
1789 * If an ioaccel volume status changed, initially because it was
1790 * re-configured and thus underwent a transformation, or
1791 * a drive failed, we would have received a state change
1792 * request and ioaccel should have been turned off. When the
1793 * transformation completes, we get another state change
1794 * request to turn ioaccel back on. In this case, we need
1795 * to update the ioaccel information.
1797 * Thus: If it is not currently enabled, but will be after
1798 * the scan completes, make sure the ioaccel pointers
1802 if (!dev[i]->offload_enabled && dev[i]->offload_to_be_enabled)
1803 hpsa_figure_phys_disk_ptrs(h, dev, ndevices, dev[i]);
1807 static int hpsa_add_device(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
1814 if (is_logical_device(device)) /* RAID */
1815 rc = scsi_add_device(h->scsi_host, device->bus,
1816 device->target, device->lun);
1818 rc = hpsa_add_sas_device(h->sas_host, device);
1823 static int hpsa_find_outstanding_commands_for_dev(struct ctlr_info *h,
1824 struct hpsa_scsi_dev_t *dev)
1829 for (i = 0; i < h->nr_cmds; i++) {
1830 struct CommandList *c = h->cmd_pool + i;
1831 int refcount = atomic_inc_return(&c->refcount);
1833 if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev,
1835 unsigned long flags;
1837 spin_lock_irqsave(&h->lock, flags); /* Implied MB */
1838 if (!hpsa_is_cmd_idle(c))
1840 spin_unlock_irqrestore(&h->lock, flags);
1850 static void hpsa_wait_for_outstanding_commands_for_dev(struct ctlr_info *h,
1851 struct hpsa_scsi_dev_t *device)
1855 int num_wait = NUM_WAIT;
1857 if (device->external)
1858 num_wait = HPSA_EH_PTRAID_TIMEOUT;
1861 cmds = hpsa_find_outstanding_commands_for_dev(h, device);
1864 if (++waits > num_wait)
1869 if (waits > num_wait) {
1870 dev_warn(&h->pdev->dev,
1871 "%s: removing device [%d:%d:%d:%d] with %d outstanding commands!\n",
1873 h->scsi_host->host_no,
1874 device->bus, device->target, device->lun, cmds);
1878 static void hpsa_remove_device(struct ctlr_info *h,
1879 struct hpsa_scsi_dev_t *device)
1881 struct scsi_device *sdev = NULL;
1887 * Allow for commands to drain
1889 device->removed = 1;
1890 hpsa_wait_for_outstanding_commands_for_dev(h, device);
1892 if (is_logical_device(device)) { /* RAID */
1893 sdev = scsi_device_lookup(h->scsi_host, device->bus,
1894 device->target, device->lun);
1896 scsi_remove_device(sdev);
1897 scsi_device_put(sdev);
1900 * We don't expect to get here. Future commands
1901 * to this device will get a selection timeout as
1902 * if the device were gone.
1904 hpsa_show_dev_msg(KERN_WARNING, h, device,
1905 "didn't find device for removal.");
1909 hpsa_remove_sas_device(device);
1913 static void adjust_hpsa_scsi_table(struct ctlr_info *h,
1914 struct hpsa_scsi_dev_t *sd[], int nsds)
1916 /* sd contains scsi3 addresses and devtypes, and inquiry
1917 * data. This function takes what's in sd to be the current
1918 * reality and updates h->dev[] to reflect that reality.
1920 int i, entry, device_change, changes = 0;
1921 struct hpsa_scsi_dev_t *csd;
1922 unsigned long flags;
1923 struct hpsa_scsi_dev_t **added, **removed;
1924 int nadded, nremoved;
1927 * A reset can cause a device status to change
1928 * re-schedule the scan to see what happened.
1930 spin_lock_irqsave(&h->reset_lock, flags);
1931 if (h->reset_in_progress) {
1932 h->drv_req_rescan = 1;
1933 spin_unlock_irqrestore(&h->reset_lock, flags);
1936 spin_unlock_irqrestore(&h->reset_lock, flags);
1938 added = kcalloc(HPSA_MAX_DEVICES, sizeof(*added), GFP_KERNEL);
1939 removed = kcalloc(HPSA_MAX_DEVICES, sizeof(*removed), GFP_KERNEL);
1941 if (!added || !removed) {
1942 dev_warn(&h->pdev->dev, "out of memory in "
1943 "adjust_hpsa_scsi_table\n");
1947 spin_lock_irqsave(&h->devlock, flags);
1949 /* find any devices in h->dev[] that are not in
1950 * sd[] and remove them from h->dev[], and for any
1951 * devices which have changed, remove the old device
1952 * info and add the new device info.
1953 * If minor device attributes change, just update
1954 * the existing device structure.
1959 while (i < h->ndevices) {
1961 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry);
1962 if (device_change == DEVICE_NOT_FOUND) {
1964 hpsa_scsi_remove_entry(h, i, removed, &nremoved);
1965 continue; /* remove ^^^, hence i not incremented */
1966 } else if (device_change == DEVICE_CHANGED) {
1968 hpsa_scsi_replace_entry(h, i, sd[entry],
1969 added, &nadded, removed, &nremoved);
1970 /* Set it to NULL to prevent it from being freed
1971 * at the bottom of hpsa_update_scsi_devices()
1974 } else if (device_change == DEVICE_UPDATED) {
1975 hpsa_scsi_update_entry(h, i, sd[entry]);
1980 /* Now, make sure every device listed in sd[] is also
1981 * listed in h->dev[], adding them if they aren't found
1984 for (i = 0; i < nsds; i++) {
1985 if (!sd[i]) /* if already added above. */
1988 /* Don't add devices which are NOT READY, FORMAT IN PROGRESS
1989 * as the SCSI mid-layer does not handle such devices well.
1990 * It relentlessly loops sending TUR at 3Hz, then READ(10)
1991 * at 160Hz, and prevents the system from coming up.
1993 if (sd[i]->volume_offline) {
1994 hpsa_show_volume_status(h, sd[i]);
1995 hpsa_show_dev_msg(KERN_INFO, h, sd[i], "offline");
1999 device_change = hpsa_scsi_find_entry(sd[i], h->dev,
2000 h->ndevices, &entry);
2001 if (device_change == DEVICE_NOT_FOUND) {
2003 if (hpsa_scsi_add_entry(h, sd[i], added, &nadded) != 0)
2005 sd[i] = NULL; /* prevent from being freed later. */
2006 } else if (device_change == DEVICE_CHANGED) {
2007 /* should never happen... */
2009 dev_warn(&h->pdev->dev,
2010 "device unexpectedly changed.\n");
2011 /* but if it does happen, we just ignore that device */
2014 hpsa_update_log_drive_phys_drive_ptrs(h, h->dev, h->ndevices);
2017 * Now that h->dev[]->phys_disk[] is coherent, we can enable
2018 * any logical drives that need it enabled.
2020 * The raid map should be current by now.
2022 * We are updating the device list used for I/O requests.
2024 for (i = 0; i < h->ndevices; i++) {
2025 if (h->dev[i] == NULL)
2027 h->dev[i]->offload_enabled = h->dev[i]->offload_to_be_enabled;
2030 spin_unlock_irqrestore(&h->devlock, flags);
2032 /* Monitor devices which are in one of several NOT READY states to be
2033 * brought online later. This must be done without holding h->devlock,
2034 * so don't touch h->dev[]
2036 for (i = 0; i < nsds; i++) {
2037 if (!sd[i]) /* if already added above. */
2039 if (sd[i]->volume_offline)
2040 hpsa_monitor_offline_device(h, sd[i]->scsi3addr);
2043 /* Don't notify scsi mid layer of any changes the first time through
2044 * (or if there are no changes) scsi_scan_host will do it later the
2045 * first time through.
2050 /* Notify scsi mid layer of any removed devices */
2051 for (i = 0; i < nremoved; i++) {
2052 if (removed[i] == NULL)
2054 if (removed[i]->expose_device)
2055 hpsa_remove_device(h, removed[i]);
2060 /* Notify scsi mid layer of any added devices */
2061 for (i = 0; i < nadded; i++) {
2064 if (added[i] == NULL)
2066 if (!(added[i]->expose_device))
2068 rc = hpsa_add_device(h, added[i]);
2071 dev_warn(&h->pdev->dev,
2072 "addition failed %d, device not added.", rc);
2073 /* now we have to remove it from h->dev,
2074 * since it didn't get added to scsi mid layer
2076 fixup_botched_add(h, added[i]);
2077 h->drv_req_rescan = 1;
2086 * Lookup bus/target/lun and return corresponding struct hpsa_scsi_dev_t *
2087 * Assume's h->devlock is held.
2089 static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h,
2090 int bus, int target, int lun)
2093 struct hpsa_scsi_dev_t *sd;
2095 for (i = 0; i < h->ndevices; i++) {
2097 if (sd->bus == bus && sd->target == target && sd->lun == lun)
2103 static int hpsa_slave_alloc(struct scsi_device *sdev)
2105 struct hpsa_scsi_dev_t *sd = NULL;
2106 unsigned long flags;
2107 struct ctlr_info *h;
2109 h = sdev_to_hba(sdev);
2110 spin_lock_irqsave(&h->devlock, flags);
2111 if (sdev_channel(sdev) == HPSA_PHYSICAL_DEVICE_BUS) {
2112 struct scsi_target *starget;
2113 struct sas_rphy *rphy;
2115 starget = scsi_target(sdev);
2116 rphy = target_to_rphy(starget);
2117 sd = hpsa_find_device_by_sas_rphy(h, rphy);
2119 sd->target = sdev_id(sdev);
2120 sd->lun = sdev->lun;
2124 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev),
2125 sdev_id(sdev), sdev->lun);
2127 if (sd && sd->expose_device) {
2128 atomic_set(&sd->ioaccel_cmds_out, 0);
2129 sdev->hostdata = sd;
2131 sdev->hostdata = NULL;
2132 spin_unlock_irqrestore(&h->devlock, flags);
2136 /* configure scsi device based on internal per-device structure */
2137 static int hpsa_slave_configure(struct scsi_device *sdev)
2139 struct hpsa_scsi_dev_t *sd;
2142 sd = sdev->hostdata;
2143 sdev->no_uld_attach = !sd || !sd->expose_device;
2146 sd->was_removed = 0;
2148 queue_depth = EXTERNAL_QD;
2149 sdev->eh_timeout = HPSA_EH_PTRAID_TIMEOUT;
2150 blk_queue_rq_timeout(sdev->request_queue,
2151 HPSA_EH_PTRAID_TIMEOUT);
2153 queue_depth = sd->queue_depth != 0 ?
2154 sd->queue_depth : sdev->host->can_queue;
2157 queue_depth = sdev->host->can_queue;
2159 scsi_change_queue_depth(sdev, queue_depth);
2164 static void hpsa_slave_destroy(struct scsi_device *sdev)
2166 struct hpsa_scsi_dev_t *hdev = NULL;
2168 hdev = sdev->hostdata;
2171 hdev->was_removed = 1;
2174 static void hpsa_free_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
2178 if (!h->ioaccel2_cmd_sg_list)
2180 for (i = 0; i < h->nr_cmds; i++) {
2181 kfree(h->ioaccel2_cmd_sg_list[i]);
2182 h->ioaccel2_cmd_sg_list[i] = NULL;
2184 kfree(h->ioaccel2_cmd_sg_list);
2185 h->ioaccel2_cmd_sg_list = NULL;
2188 static int hpsa_allocate_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
2192 if (h->chainsize <= 0)
2195 h->ioaccel2_cmd_sg_list =
2196 kcalloc(h->nr_cmds, sizeof(*h->ioaccel2_cmd_sg_list),
2198 if (!h->ioaccel2_cmd_sg_list)
2200 for (i = 0; i < h->nr_cmds; i++) {
2201 h->ioaccel2_cmd_sg_list[i] =
2202 kmalloc_array(h->maxsgentries,
2203 sizeof(*h->ioaccel2_cmd_sg_list[i]),
2205 if (!h->ioaccel2_cmd_sg_list[i])
2211 hpsa_free_ioaccel2_sg_chain_blocks(h);
2215 static void hpsa_free_sg_chain_blocks(struct ctlr_info *h)
2219 if (!h->cmd_sg_list)
2221 for (i = 0; i < h->nr_cmds; i++) {
2222 kfree(h->cmd_sg_list[i]);
2223 h->cmd_sg_list[i] = NULL;
2225 kfree(h->cmd_sg_list);
2226 h->cmd_sg_list = NULL;
2229 static int hpsa_alloc_sg_chain_blocks(struct ctlr_info *h)
2233 if (h->chainsize <= 0)
2236 h->cmd_sg_list = kcalloc(h->nr_cmds, sizeof(*h->cmd_sg_list),
2238 if (!h->cmd_sg_list)
2241 for (i = 0; i < h->nr_cmds; i++) {
2242 h->cmd_sg_list[i] = kmalloc_array(h->chainsize,
2243 sizeof(*h->cmd_sg_list[i]),
2245 if (!h->cmd_sg_list[i])
2252 hpsa_free_sg_chain_blocks(h);
2256 static int hpsa_map_ioaccel2_sg_chain_block(struct ctlr_info *h,
2257 struct io_accel2_cmd *cp, struct CommandList *c)
2259 struct ioaccel2_sg_element *chain_block;
2263 chain_block = h->ioaccel2_cmd_sg_list[c->cmdindex];
2264 chain_size = le32_to_cpu(cp->sg[0].length);
2265 temp64 = dma_map_single(&h->pdev->dev, chain_block, chain_size,
2267 if (dma_mapping_error(&h->pdev->dev, temp64)) {
2268 /* prevent subsequent unmapping */
2269 cp->sg->address = 0;
2272 cp->sg->address = cpu_to_le64(temp64);
2276 static void hpsa_unmap_ioaccel2_sg_chain_block(struct ctlr_info *h,
2277 struct io_accel2_cmd *cp)
2279 struct ioaccel2_sg_element *chain_sg;
2284 temp64 = le64_to_cpu(chain_sg->address);
2285 chain_size = le32_to_cpu(cp->sg[0].length);
2286 dma_unmap_single(&h->pdev->dev, temp64, chain_size, DMA_TO_DEVICE);
2289 static int hpsa_map_sg_chain_block(struct ctlr_info *h,
2290 struct CommandList *c)
2292 struct SGDescriptor *chain_sg, *chain_block;
2296 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
2297 chain_block = h->cmd_sg_list[c->cmdindex];
2298 chain_sg->Ext = cpu_to_le32(HPSA_SG_CHAIN);
2299 chain_len = sizeof(*chain_sg) *
2300 (le16_to_cpu(c->Header.SGTotal) - h->max_cmd_sg_entries);
2301 chain_sg->Len = cpu_to_le32(chain_len);
2302 temp64 = dma_map_single(&h->pdev->dev, chain_block, chain_len,
2304 if (dma_mapping_error(&h->pdev->dev, temp64)) {
2305 /* prevent subsequent unmapping */
2306 chain_sg->Addr = cpu_to_le64(0);
2309 chain_sg->Addr = cpu_to_le64(temp64);
2313 static void hpsa_unmap_sg_chain_block(struct ctlr_info *h,
2314 struct CommandList *c)
2316 struct SGDescriptor *chain_sg;
2318 if (le16_to_cpu(c->Header.SGTotal) <= h->max_cmd_sg_entries)
2321 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
2322 dma_unmap_single(&h->pdev->dev, le64_to_cpu(chain_sg->Addr),
2323 le32_to_cpu(chain_sg->Len), DMA_TO_DEVICE);
2327 /* Decode the various types of errors on ioaccel2 path.
2328 * Return 1 for any error that should generate a RAID path retry.
2329 * Return 0 for errors that don't require a RAID path retry.
2331 static int handle_ioaccel_mode2_error(struct ctlr_info *h,
2332 struct CommandList *c,
2333 struct scsi_cmnd *cmd,
2334 struct io_accel2_cmd *c2,
2335 struct hpsa_scsi_dev_t *dev)
2339 u32 ioaccel2_resid = 0;
2341 switch (c2->error_data.serv_response) {
2342 case IOACCEL2_SERV_RESPONSE_COMPLETE:
2343 switch (c2->error_data.status) {
2344 case IOACCEL2_STATUS_SR_TASK_COMP_GOOD:
2348 case IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND:
2349 cmd->result |= SAM_STAT_CHECK_CONDITION;
2350 if (c2->error_data.data_present !=
2351 IOACCEL2_SENSE_DATA_PRESENT) {
2352 memset(cmd->sense_buffer, 0,
2353 SCSI_SENSE_BUFFERSIZE);
2356 /* copy the sense data */
2357 data_len = c2->error_data.sense_data_len;
2358 if (data_len > SCSI_SENSE_BUFFERSIZE)
2359 data_len = SCSI_SENSE_BUFFERSIZE;
2360 if (data_len > sizeof(c2->error_data.sense_data_buff))
2362 sizeof(c2->error_data.sense_data_buff);
2363 memcpy(cmd->sense_buffer,
2364 c2->error_data.sense_data_buff, data_len);
2367 case IOACCEL2_STATUS_SR_TASK_COMP_BUSY:
2370 case IOACCEL2_STATUS_SR_TASK_COMP_RES_CON:
2373 case IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL:
2376 case IOACCEL2_STATUS_SR_TASK_COMP_ABORTED:
2384 case IOACCEL2_SERV_RESPONSE_FAILURE:
2385 switch (c2->error_data.status) {
2386 case IOACCEL2_STATUS_SR_IO_ERROR:
2387 case IOACCEL2_STATUS_SR_IO_ABORTED:
2388 case IOACCEL2_STATUS_SR_OVERRUN:
2391 case IOACCEL2_STATUS_SR_UNDERRUN:
2392 cmd->result = (DID_OK << 16); /* host byte */
2393 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
2394 ioaccel2_resid = get_unaligned_le32(
2395 &c2->error_data.resid_cnt[0]);
2396 scsi_set_resid(cmd, ioaccel2_resid);
2398 case IOACCEL2_STATUS_SR_NO_PATH_TO_DEVICE:
2399 case IOACCEL2_STATUS_SR_INVALID_DEVICE:
2400 case IOACCEL2_STATUS_SR_IOACCEL_DISABLED:
2402 * Did an HBA disk disappear? We will eventually
2403 * get a state change event from the controller but
2404 * in the meantime, we need to tell the OS that the
2405 * HBA disk is no longer there and stop I/O
2406 * from going down. This allows the potential re-insert
2407 * of the disk to get the same device node.
2409 if (dev->physical_device && dev->expose_device) {
2410 cmd->result = DID_NO_CONNECT << 16;
2412 h->drv_req_rescan = 1;
2413 dev_warn(&h->pdev->dev,
2414 "%s: device is gone!\n", __func__);
2417 * Retry by sending down the RAID path.
2418 * We will get an event from ctlr to
2419 * trigger rescan regardless.
2427 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
2429 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
2431 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
2434 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
2444 return retry; /* retry on raid path? */
2447 static void hpsa_cmd_resolve_events(struct ctlr_info *h,
2448 struct CommandList *c)
2450 struct hpsa_scsi_dev_t *dev = c->device;
2453 * Reset c->scsi_cmd here so that the reset handler will know
2454 * this command has completed. Then, check to see if the handler is
2455 * waiting for this command, and, if so, wake it.
2457 c->scsi_cmd = SCSI_CMD_IDLE;
2458 mb(); /* Declare command idle before checking for pending events. */
2460 atomic_dec(&dev->commands_outstanding);
2461 if (dev->in_reset &&
2462 atomic_read(&dev->commands_outstanding) <= 0)
2463 wake_up_all(&h->event_sync_wait_queue);
2467 static void hpsa_cmd_resolve_and_free(struct ctlr_info *h,
2468 struct CommandList *c)
2470 hpsa_cmd_resolve_events(h, c);
2471 cmd_tagged_free(h, c);
2474 static void hpsa_cmd_free_and_done(struct ctlr_info *h,
2475 struct CommandList *c, struct scsi_cmnd *cmd)
2477 hpsa_cmd_resolve_and_free(h, c);
2478 if (cmd && cmd->scsi_done)
2479 cmd->scsi_done(cmd);
2482 static void hpsa_retry_cmd(struct ctlr_info *h, struct CommandList *c)
2484 INIT_WORK(&c->work, hpsa_command_resubmit_worker);
2485 queue_work_on(raw_smp_processor_id(), h->resubmit_wq, &c->work);
2488 static void process_ioaccel2_completion(struct ctlr_info *h,
2489 struct CommandList *c, struct scsi_cmnd *cmd,
2490 struct hpsa_scsi_dev_t *dev)
2492 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
2494 /* check for good status */
2495 if (likely(c2->error_data.serv_response == 0 &&
2496 c2->error_data.status == 0)) {
2498 return hpsa_cmd_free_and_done(h, c, cmd);
2502 * Any RAID offload error results in retry which will use
2503 * the normal I/O path so the controller can handle whatever is
2506 if (is_logical_device(dev) &&
2507 c2->error_data.serv_response ==
2508 IOACCEL2_SERV_RESPONSE_FAILURE) {
2509 if (c2->error_data.status ==
2510 IOACCEL2_STATUS_SR_IOACCEL_DISABLED) {
2511 hpsa_turn_off_ioaccel_for_device(dev);
2514 if (dev->in_reset) {
2515 cmd->result = DID_RESET << 16;
2516 return hpsa_cmd_free_and_done(h, c, cmd);
2519 return hpsa_retry_cmd(h, c);
2522 if (handle_ioaccel_mode2_error(h, c, cmd, c2, dev))
2523 return hpsa_retry_cmd(h, c);
2525 return hpsa_cmd_free_and_done(h, c, cmd);
2528 /* Returns 0 on success, < 0 otherwise. */
2529 static int hpsa_evaluate_tmf_status(struct ctlr_info *h,
2530 struct CommandList *cp)
2532 u8 tmf_status = cp->err_info->ScsiStatus;
2534 switch (tmf_status) {
2535 case CISS_TMF_COMPLETE:
2537 * CISS_TMF_COMPLETE never happens, instead,
2538 * ei->CommandStatus == 0 for this case.
2540 case CISS_TMF_SUCCESS:
2542 case CISS_TMF_INVALID_FRAME:
2543 case CISS_TMF_NOT_SUPPORTED:
2544 case CISS_TMF_FAILED:
2545 case CISS_TMF_WRONG_LUN:
2546 case CISS_TMF_OVERLAPPED_TAG:
2549 dev_warn(&h->pdev->dev, "Unknown TMF status: 0x%02x\n",
2556 static void complete_scsi_command(struct CommandList *cp)
2558 struct scsi_cmnd *cmd;
2559 struct ctlr_info *h;
2560 struct ErrorInfo *ei;
2561 struct hpsa_scsi_dev_t *dev;
2562 struct io_accel2_cmd *c2;
2565 u8 asc; /* additional sense code */
2566 u8 ascq; /* additional sense code qualifier */
2567 unsigned long sense_data_size;
2574 cmd->result = DID_NO_CONNECT << 16;
2575 return hpsa_cmd_free_and_done(h, cp, cmd);
2578 dev = cmd->device->hostdata;
2580 cmd->result = DID_NO_CONNECT << 16;
2581 return hpsa_cmd_free_and_done(h, cp, cmd);
2583 c2 = &h->ioaccel2_cmd_pool[cp->cmdindex];
2585 scsi_dma_unmap(cmd); /* undo the DMA mappings */
2586 if ((cp->cmd_type == CMD_SCSI) &&
2587 (le16_to_cpu(cp->Header.SGTotal) > h->max_cmd_sg_entries))
2588 hpsa_unmap_sg_chain_block(h, cp);
2590 if ((cp->cmd_type == CMD_IOACCEL2) &&
2591 (c2->sg[0].chain_indicator == IOACCEL2_CHAIN))
2592 hpsa_unmap_ioaccel2_sg_chain_block(h, c2);
2594 cmd->result = (DID_OK << 16); /* host byte */
2595 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
2597 /* SCSI command has already been cleaned up in SML */
2598 if (dev->was_removed) {
2599 hpsa_cmd_resolve_and_free(h, cp);
2603 if (cp->cmd_type == CMD_IOACCEL2 || cp->cmd_type == CMD_IOACCEL1) {
2604 if (dev->physical_device && dev->expose_device &&
2606 cmd->result = DID_NO_CONNECT << 16;
2607 return hpsa_cmd_free_and_done(h, cp, cmd);
2609 if (likely(cp->phys_disk != NULL))
2610 atomic_dec(&cp->phys_disk->ioaccel_cmds_out);
2614 * We check for lockup status here as it may be set for
2615 * CMD_SCSI, CMD_IOACCEL1 and CMD_IOACCEL2 commands by
2616 * fail_all_oustanding_cmds()
2618 if (unlikely(ei->CommandStatus == CMD_CTLR_LOCKUP)) {
2619 /* DID_NO_CONNECT will prevent a retry */
2620 cmd->result = DID_NO_CONNECT << 16;
2621 return hpsa_cmd_free_and_done(h, cp, cmd);
2624 if (cp->cmd_type == CMD_IOACCEL2)
2625 return process_ioaccel2_completion(h, cp, cmd, dev);
2627 scsi_set_resid(cmd, ei->ResidualCnt);
2628 if (ei->CommandStatus == 0)
2629 return hpsa_cmd_free_and_done(h, cp, cmd);
2631 /* For I/O accelerator commands, copy over some fields to the normal
2632 * CISS header used below for error handling.
2634 if (cp->cmd_type == CMD_IOACCEL1) {
2635 struct io_accel1_cmd *c = &h->ioaccel_cmd_pool[cp->cmdindex];
2636 cp->Header.SGList = scsi_sg_count(cmd);
2637 cp->Header.SGTotal = cpu_to_le16(cp->Header.SGList);
2638 cp->Request.CDBLen = le16_to_cpu(c->io_flags) &
2639 IOACCEL1_IOFLAGS_CDBLEN_MASK;
2640 cp->Header.tag = c->tag;
2641 memcpy(cp->Header.LUN.LunAddrBytes, c->CISS_LUN, 8);
2642 memcpy(cp->Request.CDB, c->CDB, cp->Request.CDBLen);
2644 /* Any RAID offload error results in retry which will use
2645 * the normal I/O path so the controller can handle whatever's
2648 if (is_logical_device(dev)) {
2649 if (ei->CommandStatus == CMD_IOACCEL_DISABLED)
2650 dev->offload_enabled = 0;
2651 return hpsa_retry_cmd(h, cp);
2655 /* an error has occurred */
2656 switch (ei->CommandStatus) {
2658 case CMD_TARGET_STATUS:
2659 cmd->result |= ei->ScsiStatus;
2660 /* copy the sense data */
2661 if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo))
2662 sense_data_size = SCSI_SENSE_BUFFERSIZE;
2664 sense_data_size = sizeof(ei->SenseInfo);
2665 if (ei->SenseLen < sense_data_size)
2666 sense_data_size = ei->SenseLen;
2667 memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size);
2669 decode_sense_data(ei->SenseInfo, sense_data_size,
2670 &sense_key, &asc, &ascq);
2671 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
2672 switch (sense_key) {
2673 case ABORTED_COMMAND:
2674 cmd->result |= DID_SOFT_ERROR << 16;
2676 case UNIT_ATTENTION:
2677 if (asc == 0x3F && ascq == 0x0E)
2678 h->drv_req_rescan = 1;
2680 case ILLEGAL_REQUEST:
2681 if (asc == 0x25 && ascq == 0x00) {
2683 cmd->result = DID_NO_CONNECT << 16;
2689 /* Problem was not a check condition
2690 * Pass it up to the upper layers...
2692 if (ei->ScsiStatus) {
2693 dev_warn(&h->pdev->dev, "cp %p has status 0x%x "
2694 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
2695 "Returning result: 0x%x\n",
2697 sense_key, asc, ascq,
2699 } else { /* scsi status is zero??? How??? */
2700 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. "
2701 "Returning no connection.\n", cp),
2703 /* Ordinarily, this case should never happen,
2704 * but there is a bug in some released firmware
2705 * revisions that allows it to happen if, for
2706 * example, a 4100 backplane loses power and
2707 * the tape drive is in it. We assume that
2708 * it's a fatal error of some kind because we
2709 * can't show that it wasn't. We will make it
2710 * look like selection timeout since that is
2711 * the most common reason for this to occur,
2712 * and it's severe enough.
2715 cmd->result = DID_NO_CONNECT << 16;
2719 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
2721 case CMD_DATA_OVERRUN:
2722 dev_warn(&h->pdev->dev,
2723 "CDB %16phN data overrun\n", cp->Request.CDB);
2726 /* print_bytes(cp, sizeof(*cp), 1, 0);
2728 /* We get CMD_INVALID if you address a non-existent device
2729 * instead of a selection timeout (no response). You will
2730 * see this if you yank out a drive, then try to access it.
2731 * This is kind of a shame because it means that any other
2732 * CMD_INVALID (e.g. driver bug) will get interpreted as a
2733 * missing target. */
2734 cmd->result = DID_NO_CONNECT << 16;
2737 case CMD_PROTOCOL_ERR:
2738 cmd->result = DID_ERROR << 16;
2739 dev_warn(&h->pdev->dev, "CDB %16phN : protocol error\n",
2742 case CMD_HARDWARE_ERR:
2743 cmd->result = DID_ERROR << 16;
2744 dev_warn(&h->pdev->dev, "CDB %16phN : hardware error\n",
2747 case CMD_CONNECTION_LOST:
2748 cmd->result = DID_ERROR << 16;
2749 dev_warn(&h->pdev->dev, "CDB %16phN : connection lost\n",
2753 cmd->result = DID_ABORT << 16;
2755 case CMD_ABORT_FAILED:
2756 cmd->result = DID_ERROR << 16;
2757 dev_warn(&h->pdev->dev, "CDB %16phN : abort failed\n",
2760 case CMD_UNSOLICITED_ABORT:
2761 cmd->result = DID_SOFT_ERROR << 16; /* retry the command */
2762 dev_warn(&h->pdev->dev, "CDB %16phN : unsolicited abort\n",
2766 cmd->result = DID_TIME_OUT << 16;
2767 dev_warn(&h->pdev->dev, "CDB %16phN timed out\n",
2770 case CMD_UNABORTABLE:
2771 cmd->result = DID_ERROR << 16;
2772 dev_warn(&h->pdev->dev, "Command unabortable\n");
2774 case CMD_TMF_STATUS:
2775 if (hpsa_evaluate_tmf_status(h, cp)) /* TMF failed? */
2776 cmd->result = DID_ERROR << 16;
2778 case CMD_IOACCEL_DISABLED:
2779 /* This only handles the direct pass-through case since RAID
2780 * offload is handled above. Just attempt a retry.
2782 cmd->result = DID_SOFT_ERROR << 16;
2783 dev_warn(&h->pdev->dev,
2784 "cp %p had HP SSD Smart Path error\n", cp);
2787 cmd->result = DID_ERROR << 16;
2788 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n",
2789 cp, ei->CommandStatus);
2792 return hpsa_cmd_free_and_done(h, cp, cmd);
2795 static void hpsa_pci_unmap(struct pci_dev *pdev, struct CommandList *c,
2796 int sg_used, enum dma_data_direction data_direction)
2800 for (i = 0; i < sg_used; i++)
2801 dma_unmap_single(&pdev->dev, le64_to_cpu(c->SG[i].Addr),
2802 le32_to_cpu(c->SG[i].Len),
2806 static int hpsa_map_one(struct pci_dev *pdev,
2807 struct CommandList *cp,
2810 enum dma_data_direction data_direction)
2814 if (buflen == 0 || data_direction == DMA_NONE) {
2815 cp->Header.SGList = 0;
2816 cp->Header.SGTotal = cpu_to_le16(0);
2820 addr64 = dma_map_single(&pdev->dev, buf, buflen, data_direction);
2821 if (dma_mapping_error(&pdev->dev, addr64)) {
2822 /* Prevent subsequent unmap of something never mapped */
2823 cp->Header.SGList = 0;
2824 cp->Header.SGTotal = cpu_to_le16(0);
2827 cp->SG[0].Addr = cpu_to_le64(addr64);
2828 cp->SG[0].Len = cpu_to_le32(buflen);
2829 cp->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* we are not chaining */
2830 cp->Header.SGList = 1; /* no. SGs contig in this cmd */
2831 cp->Header.SGTotal = cpu_to_le16(1); /* total sgs in cmd list */
2835 #define NO_TIMEOUT ((unsigned long) -1)
2836 #define DEFAULT_TIMEOUT 30000 /* milliseconds */
2837 static int hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h,
2838 struct CommandList *c, int reply_queue, unsigned long timeout_msecs)
2840 DECLARE_COMPLETION_ONSTACK(wait);
2843 __enqueue_cmd_and_start_io(h, c, reply_queue);
2844 if (timeout_msecs == NO_TIMEOUT) {
2845 /* TODO: get rid of this no-timeout thing */
2846 wait_for_completion_io(&wait);
2849 if (!wait_for_completion_io_timeout(&wait,
2850 msecs_to_jiffies(timeout_msecs))) {
2851 dev_warn(&h->pdev->dev, "Command timed out.\n");
2857 static int hpsa_scsi_do_simple_cmd(struct ctlr_info *h, struct CommandList *c,
2858 int reply_queue, unsigned long timeout_msecs)
2860 if (unlikely(lockup_detected(h))) {
2861 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
2864 return hpsa_scsi_do_simple_cmd_core(h, c, reply_queue, timeout_msecs);
2867 static u32 lockup_detected(struct ctlr_info *h)
2870 u32 rc, *lockup_detected;
2873 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
2874 rc = *lockup_detected;
2879 #define MAX_DRIVER_CMD_RETRIES 25
2880 static int hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
2881 struct CommandList *c, enum dma_data_direction data_direction,
2882 unsigned long timeout_msecs)
2884 int backoff_time = 10, retry_count = 0;
2888 memset(c->err_info, 0, sizeof(*c->err_info));
2889 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
2894 if (retry_count > 3) {
2895 msleep(backoff_time);
2896 if (backoff_time < 1000)
2899 } while ((check_for_unit_attention(h, c) ||
2900 check_for_busy(h, c)) &&
2901 retry_count <= MAX_DRIVER_CMD_RETRIES);
2902 hpsa_pci_unmap(h->pdev, c, 1, data_direction);
2903 if (retry_count > MAX_DRIVER_CMD_RETRIES)
2908 static void hpsa_print_cmd(struct ctlr_info *h, char *txt,
2909 struct CommandList *c)
2911 const u8 *cdb = c->Request.CDB;
2912 const u8 *lun = c->Header.LUN.LunAddrBytes;
2914 dev_warn(&h->pdev->dev, "%s: LUN:%8phN CDB:%16phN\n",
2918 static void hpsa_scsi_interpret_error(struct ctlr_info *h,
2919 struct CommandList *cp)
2921 const struct ErrorInfo *ei = cp->err_info;
2922 struct device *d = &cp->h->pdev->dev;
2923 u8 sense_key, asc, ascq;
2926 switch (ei->CommandStatus) {
2927 case CMD_TARGET_STATUS:
2928 if (ei->SenseLen > sizeof(ei->SenseInfo))
2929 sense_len = sizeof(ei->SenseInfo);
2931 sense_len = ei->SenseLen;
2932 decode_sense_data(ei->SenseInfo, sense_len,
2933 &sense_key, &asc, &ascq);
2934 hpsa_print_cmd(h, "SCSI status", cp);
2935 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION)
2936 dev_warn(d, "SCSI Status = 02, Sense key = 0x%02x, ASC = 0x%02x, ASCQ = 0x%02x\n",
2937 sense_key, asc, ascq);
2939 dev_warn(d, "SCSI Status = 0x%02x\n", ei->ScsiStatus);
2940 if (ei->ScsiStatus == 0)
2941 dev_warn(d, "SCSI status is abnormally zero. "
2942 "(probably indicates selection timeout "
2943 "reported incorrectly due to a known "
2944 "firmware bug, circa July, 2001.)\n");
2946 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
2948 case CMD_DATA_OVERRUN:
2949 hpsa_print_cmd(h, "overrun condition", cp);
2952 /* controller unfortunately reports SCSI passthru's
2953 * to non-existent targets as invalid commands.
2955 hpsa_print_cmd(h, "invalid command", cp);
2956 dev_warn(d, "probably means device no longer present\n");
2959 case CMD_PROTOCOL_ERR:
2960 hpsa_print_cmd(h, "protocol error", cp);
2962 case CMD_HARDWARE_ERR:
2963 hpsa_print_cmd(h, "hardware error", cp);
2965 case CMD_CONNECTION_LOST:
2966 hpsa_print_cmd(h, "connection lost", cp);
2969 hpsa_print_cmd(h, "aborted", cp);
2971 case CMD_ABORT_FAILED:
2972 hpsa_print_cmd(h, "abort failed", cp);
2974 case CMD_UNSOLICITED_ABORT:
2975 hpsa_print_cmd(h, "unsolicited abort", cp);
2978 hpsa_print_cmd(h, "timed out", cp);
2980 case CMD_UNABORTABLE:
2981 hpsa_print_cmd(h, "unabortable", cp);
2983 case CMD_CTLR_LOCKUP:
2984 hpsa_print_cmd(h, "controller lockup detected", cp);
2987 hpsa_print_cmd(h, "unknown status", cp);
2988 dev_warn(d, "Unknown command status %x\n",
2993 static int hpsa_do_receive_diagnostic(struct ctlr_info *h, u8 *scsi3addr,
2994 u8 page, u8 *buf, size_t bufsize)
2997 struct CommandList *c;
2998 struct ErrorInfo *ei;
3001 if (fill_cmd(c, RECEIVE_DIAGNOSTIC, h, buf, bufsize,
3002 page, scsi3addr, TYPE_CMD)) {
3006 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3011 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3012 hpsa_scsi_interpret_error(h, c);
3020 static u64 hpsa_get_enclosure_logical_identifier(struct ctlr_info *h,
3027 buf = kzalloc(1024, GFP_KERNEL);
3031 rc = hpsa_do_receive_diagnostic(h, scsi3addr, RECEIVE_DIAGNOSTIC,
3037 sa = get_unaligned_be64(buf+12);
3044 static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
3045 u16 page, unsigned char *buf,
3046 unsigned char bufsize)
3049 struct CommandList *c;
3050 struct ErrorInfo *ei;
3054 if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize,
3055 page, scsi3addr, TYPE_CMD)) {
3059 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3064 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3065 hpsa_scsi_interpret_error(h, c);
3073 static int hpsa_send_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev,
3074 u8 reset_type, int reply_queue)
3077 struct CommandList *c;
3078 struct ErrorInfo *ei;
3083 /* fill_cmd can't fail here, no data buffer to map. */
3084 (void) fill_cmd(c, reset_type, h, NULL, 0, 0, dev->scsi3addr, TYPE_MSG);
3085 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
3087 dev_warn(&h->pdev->dev, "Failed to send reset command\n");
3090 /* no unmap needed here because no data xfer. */
3093 if (ei->CommandStatus != 0) {
3094 hpsa_scsi_interpret_error(h, c);
3102 static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c,
3103 struct hpsa_scsi_dev_t *dev,
3104 unsigned char *scsi3addr)
3108 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
3109 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
3111 if (hpsa_is_cmd_idle(c))
3114 switch (c->cmd_type) {
3116 case CMD_IOCTL_PEND:
3117 match = !memcmp(scsi3addr, &c->Header.LUN.LunAddrBytes,
3118 sizeof(c->Header.LUN.LunAddrBytes));
3123 if (c->phys_disk == dev) {
3124 /* HBA mode match */
3127 /* Possible RAID mode -- check each phys dev. */
3128 /* FIXME: Do we need to take out a lock here? If
3129 * so, we could just call hpsa_get_pdisk_of_ioaccel2()
3131 for (i = 0; i < dev->nphysical_disks && !match; i++) {
3132 /* FIXME: an alternate test might be
3134 * match = dev->phys_disk[i]->ioaccel_handle
3135 * == c2->scsi_nexus; */
3136 match = dev->phys_disk[i] == c->phys_disk;
3142 for (i = 0; i < dev->nphysical_disks && !match; i++) {
3143 match = dev->phys_disk[i]->ioaccel_handle ==
3144 le32_to_cpu(ac->it_nexus);
3148 case 0: /* The command is in the middle of being initialized. */
3153 dev_err(&h->pdev->dev, "unexpected cmd_type: %d\n",
3161 static int hpsa_do_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev,
3162 u8 reset_type, int reply_queue)
3166 /* We can really only handle one reset at a time */
3167 if (mutex_lock_interruptible(&h->reset_mutex) == -EINTR) {
3168 dev_warn(&h->pdev->dev, "concurrent reset wait interrupted.\n");
3172 rc = hpsa_send_reset(h, dev, reset_type, reply_queue);
3174 /* incremented by sending the reset request */
3175 atomic_dec(&dev->commands_outstanding);
3176 wait_event(h->event_sync_wait_queue,
3177 atomic_read(&dev->commands_outstanding) <= 0 ||
3178 lockup_detected(h));
3181 if (unlikely(lockup_detected(h))) {
3182 dev_warn(&h->pdev->dev,
3183 "Controller lockup detected during reset wait\n");
3188 rc = wait_for_device_to_become_ready(h, dev->scsi3addr, 0);
3190 mutex_unlock(&h->reset_mutex);
3194 static void hpsa_get_raid_level(struct ctlr_info *h,
3195 unsigned char *scsi3addr, unsigned char *raid_level)
3200 *raid_level = RAID_UNKNOWN;
3201 buf = kzalloc(64, GFP_KERNEL);
3205 if (!hpsa_vpd_page_supported(h, scsi3addr,
3206 HPSA_VPD_LV_DEVICE_GEOMETRY))
3209 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE |
3210 HPSA_VPD_LV_DEVICE_GEOMETRY, buf, 64);
3213 *raid_level = buf[8];
3214 if (*raid_level > RAID_UNKNOWN)
3215 *raid_level = RAID_UNKNOWN;
3221 #define HPSA_MAP_DEBUG
3222 #ifdef HPSA_MAP_DEBUG
3223 static void hpsa_debug_map_buff(struct ctlr_info *h, int rc,
3224 struct raid_map_data *map_buff)
3226 struct raid_map_disk_data *dd = &map_buff->data[0];
3228 u16 map_cnt, row_cnt, disks_per_row;
3233 /* Show details only if debugging has been activated. */
3234 if (h->raid_offload_debug < 2)
3237 dev_info(&h->pdev->dev, "structure_size = %u\n",
3238 le32_to_cpu(map_buff->structure_size));
3239 dev_info(&h->pdev->dev, "volume_blk_size = %u\n",
3240 le32_to_cpu(map_buff->volume_blk_size));
3241 dev_info(&h->pdev->dev, "volume_blk_cnt = 0x%llx\n",
3242 le64_to_cpu(map_buff->volume_blk_cnt));
3243 dev_info(&h->pdev->dev, "physicalBlockShift = %u\n",
3244 map_buff->phys_blk_shift);
3245 dev_info(&h->pdev->dev, "parity_rotation_shift = %u\n",
3246 map_buff->parity_rotation_shift);
3247 dev_info(&h->pdev->dev, "strip_size = %u\n",
3248 le16_to_cpu(map_buff->strip_size));
3249 dev_info(&h->pdev->dev, "disk_starting_blk = 0x%llx\n",
3250 le64_to_cpu(map_buff->disk_starting_blk));
3251 dev_info(&h->pdev->dev, "disk_blk_cnt = 0x%llx\n",
3252 le64_to_cpu(map_buff->disk_blk_cnt));
3253 dev_info(&h->pdev->dev, "data_disks_per_row = %u\n",
3254 le16_to_cpu(map_buff->data_disks_per_row));
3255 dev_info(&h->pdev->dev, "metadata_disks_per_row = %u\n",
3256 le16_to_cpu(map_buff->metadata_disks_per_row));
3257 dev_info(&h->pdev->dev, "row_cnt = %u\n",
3258 le16_to_cpu(map_buff->row_cnt));
3259 dev_info(&h->pdev->dev, "layout_map_count = %u\n",
3260 le16_to_cpu(map_buff->layout_map_count));
3261 dev_info(&h->pdev->dev, "flags = 0x%x\n",
3262 le16_to_cpu(map_buff->flags));
3263 dev_info(&h->pdev->dev, "encryption = %s\n",
3264 le16_to_cpu(map_buff->flags) &
3265 RAID_MAP_FLAG_ENCRYPT_ON ? "ON" : "OFF");
3266 dev_info(&h->pdev->dev, "dekindex = %u\n",
3267 le16_to_cpu(map_buff->dekindex));
3268 map_cnt = le16_to_cpu(map_buff->layout_map_count);
3269 for (map = 0; map < map_cnt; map++) {
3270 dev_info(&h->pdev->dev, "Map%u:\n", map);
3271 row_cnt = le16_to_cpu(map_buff->row_cnt);
3272 for (row = 0; row < row_cnt; row++) {
3273 dev_info(&h->pdev->dev, " Row%u:\n", row);
3275 le16_to_cpu(map_buff->data_disks_per_row);
3276 for (col = 0; col < disks_per_row; col++, dd++)
3277 dev_info(&h->pdev->dev,
3278 " D%02u: h=0x%04x xor=%u,%u\n",
3279 col, dd->ioaccel_handle,
3280 dd->xor_mult[0], dd->xor_mult[1]);
3282 le16_to_cpu(map_buff->metadata_disks_per_row);
3283 for (col = 0; col < disks_per_row; col++, dd++)
3284 dev_info(&h->pdev->dev,
3285 " M%02u: h=0x%04x xor=%u,%u\n",
3286 col, dd->ioaccel_handle,
3287 dd->xor_mult[0], dd->xor_mult[1]);
3292 static void hpsa_debug_map_buff(__attribute__((unused)) struct ctlr_info *h,
3293 __attribute__((unused)) int rc,
3294 __attribute__((unused)) struct raid_map_data *map_buff)
3299 static int hpsa_get_raid_map(struct ctlr_info *h,
3300 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
3303 struct CommandList *c;
3304 struct ErrorInfo *ei;
3308 if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map,
3309 sizeof(this_device->raid_map), 0,
3310 scsi3addr, TYPE_CMD)) {
3311 dev_warn(&h->pdev->dev, "hpsa_get_raid_map fill_cmd failed\n");
3315 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3320 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3321 hpsa_scsi_interpret_error(h, c);
3327 /* @todo in the future, dynamically allocate RAID map memory */
3328 if (le32_to_cpu(this_device->raid_map.structure_size) >
3329 sizeof(this_device->raid_map)) {
3330 dev_warn(&h->pdev->dev, "RAID map size is too large!\n");
3333 hpsa_debug_map_buff(h, rc, &this_device->raid_map);
3340 static int hpsa_bmic_sense_subsystem_information(struct ctlr_info *h,
3341 unsigned char scsi3addr[], u16 bmic_device_index,
3342 struct bmic_sense_subsystem_info *buf, size_t bufsize)
3345 struct CommandList *c;
3346 struct ErrorInfo *ei;
3350 rc = fill_cmd(c, BMIC_SENSE_SUBSYSTEM_INFORMATION, h, buf, bufsize,
3351 0, RAID_CTLR_LUNID, TYPE_CMD);
3355 c->Request.CDB[2] = bmic_device_index & 0xff;
3356 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;
3358 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3363 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3364 hpsa_scsi_interpret_error(h, c);
3372 static int hpsa_bmic_id_controller(struct ctlr_info *h,
3373 struct bmic_identify_controller *buf, size_t bufsize)
3376 struct CommandList *c;
3377 struct ErrorInfo *ei;
3381 rc = fill_cmd(c, BMIC_IDENTIFY_CONTROLLER, h, buf, bufsize,
3382 0, RAID_CTLR_LUNID, TYPE_CMD);
3386 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3391 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3392 hpsa_scsi_interpret_error(h, c);
3400 static int hpsa_bmic_id_physical_device(struct ctlr_info *h,
3401 unsigned char scsi3addr[], u16 bmic_device_index,
3402 struct bmic_identify_physical_device *buf, size_t bufsize)
3405 struct CommandList *c;
3406 struct ErrorInfo *ei;
3409 rc = fill_cmd(c, BMIC_IDENTIFY_PHYSICAL_DEVICE, h, buf, bufsize,
3410 0, RAID_CTLR_LUNID, TYPE_CMD);
3414 c->Request.CDB[2] = bmic_device_index & 0xff;
3415 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;
3417 hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3420 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3421 hpsa_scsi_interpret_error(h, c);
3431 * get enclosure information
3432 * struct ReportExtendedLUNdata *rlep - Used for BMIC drive number
3433 * struct hpsa_scsi_dev_t *encl_dev - device entry for enclosure
3434 * Uses id_physical_device to determine the box_index.
3436 static void hpsa_get_enclosure_info(struct ctlr_info *h,
3437 unsigned char *scsi3addr,
3438 struct ReportExtendedLUNdata *rlep, int rle_index,
3439 struct hpsa_scsi_dev_t *encl_dev)
3442 struct CommandList *c = NULL;
3443 struct ErrorInfo *ei = NULL;
3444 struct bmic_sense_storage_box_params *bssbp = NULL;
3445 struct bmic_identify_physical_device *id_phys = NULL;
3446 struct ext_report_lun_entry *rle = &rlep->LUN[rle_index];
3447 u16 bmic_device_index = 0;
3450 hpsa_get_enclosure_logical_identifier(h, scsi3addr);
3452 bmic_device_index = GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]);
3454 if (encl_dev->target == -1 || encl_dev->lun == -1) {
3459 if (bmic_device_index == 0xFF00 || MASKED_DEVICE(&rle->lunid[0])) {
3464 bssbp = kzalloc(sizeof(*bssbp), GFP_KERNEL);
3468 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
3472 rc = hpsa_bmic_id_physical_device(h, scsi3addr, bmic_device_index,
3473 id_phys, sizeof(*id_phys));
3475 dev_warn(&h->pdev->dev, "%s: id_phys failed %d bdi[0x%x]\n",
3476 __func__, encl_dev->external, bmic_device_index);
3482 rc = fill_cmd(c, BMIC_SENSE_STORAGE_BOX_PARAMS, h, bssbp,
3483 sizeof(*bssbp), 0, RAID_CTLR_LUNID, TYPE_CMD);
3488 if (id_phys->phys_connector[1] == 'E')
3489 c->Request.CDB[5] = id_phys->box_index;
3491 c->Request.CDB[5] = 0;
3493 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3499 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3504 encl_dev->box[id_phys->active_path_number] = bssbp->phys_box_on_port;
3505 memcpy(&encl_dev->phys_connector[id_phys->active_path_number],
3506 bssbp->phys_connector, sizeof(bssbp->phys_connector));
3517 hpsa_show_dev_msg(KERN_INFO, h, encl_dev,
3518 "Error, could not get enclosure information");
3521 static u64 hpsa_get_sas_address_from_report_physical(struct ctlr_info *h,
3522 unsigned char *scsi3addr)
3524 struct ReportExtendedLUNdata *physdev;
3529 physdev = kzalloc(sizeof(*physdev), GFP_KERNEL);
3533 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
3534 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
3538 nphysicals = get_unaligned_be32(physdev->LUNListLength) / 24;
3540 for (i = 0; i < nphysicals; i++)
3541 if (!memcmp(&physdev->LUN[i].lunid[0], scsi3addr, 8)) {
3542 sa = get_unaligned_be64(&physdev->LUN[i].wwid[0]);
3551 static void hpsa_get_sas_address(struct ctlr_info *h, unsigned char *scsi3addr,
3552 struct hpsa_scsi_dev_t *dev)
3557 if (is_hba_lunid(scsi3addr)) {
3558 struct bmic_sense_subsystem_info *ssi;
3560 ssi = kzalloc(sizeof(*ssi), GFP_KERNEL);
3564 rc = hpsa_bmic_sense_subsystem_information(h,
3565 scsi3addr, 0, ssi, sizeof(*ssi));
3567 sa = get_unaligned_be64(ssi->primary_world_wide_id);
3568 h->sas_address = sa;
3573 sa = hpsa_get_sas_address_from_report_physical(h, scsi3addr);
3575 dev->sas_address = sa;
3578 static void hpsa_ext_ctrl_present(struct ctlr_info *h,
3579 struct ReportExtendedLUNdata *physdev)
3584 if (h->discovery_polling)
3587 nphysicals = (get_unaligned_be32(physdev->LUNListLength) / 24) + 1;
3589 for (i = 0; i < nphysicals; i++) {
3590 if (physdev->LUN[i].device_type ==
3591 BMIC_DEVICE_TYPE_CONTROLLER
3592 && !is_hba_lunid(physdev->LUN[i].lunid)) {
3593 dev_info(&h->pdev->dev,
3594 "External controller present, activate discovery polling and disable rld caching\n");
3595 hpsa_disable_rld_caching(h);
3596 h->discovery_polling = 1;
3602 /* Get a device id from inquiry page 0x83 */
3603 static bool hpsa_vpd_page_supported(struct ctlr_info *h,
3604 unsigned char scsi3addr[], u8 page)
3609 unsigned char *buf, bufsize;
3611 buf = kzalloc(256, GFP_KERNEL);
3615 /* Get the size of the page list first */
3616 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3617 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3618 buf, HPSA_VPD_HEADER_SZ);
3620 goto exit_unsupported;
3622 if ((pages + HPSA_VPD_HEADER_SZ) <= 255)
3623 bufsize = pages + HPSA_VPD_HEADER_SZ;
3627 /* Get the whole VPD page list */
3628 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3629 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3632 goto exit_unsupported;
3635 for (i = 1; i <= pages; i++)
3636 if (buf[3 + i] == page)
3637 goto exit_supported;
3647 * Called during a scan operation.
3648 * Sets ioaccel status on the new device list, not the existing device list
3650 * The device list used during I/O will be updated later in
3651 * adjust_hpsa_scsi_table.
3653 static void hpsa_get_ioaccel_status(struct ctlr_info *h,
3654 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
3660 this_device->offload_config = 0;
3661 this_device->offload_enabled = 0;
3662 this_device->offload_to_be_enabled = 0;
3664 buf = kzalloc(64, GFP_KERNEL);
3667 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_IOACCEL_STATUS))
3669 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3670 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, buf, 64);
3674 #define IOACCEL_STATUS_BYTE 4
3675 #define OFFLOAD_CONFIGURED_BIT 0x01
3676 #define OFFLOAD_ENABLED_BIT 0x02
3677 ioaccel_status = buf[IOACCEL_STATUS_BYTE];
3678 this_device->offload_config =
3679 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT);
3680 if (this_device->offload_config) {
3681 bool offload_enabled =
3682 !!(ioaccel_status & OFFLOAD_ENABLED_BIT);
3684 * Check to see if offload can be enabled.
3686 if (offload_enabled) {
3687 rc = hpsa_get_raid_map(h, scsi3addr, this_device);
3688 if (rc) /* could not load raid_map */
3690 this_device->offload_to_be_enabled = 1;
3699 /* Get the device id from inquiry page 0x83 */
3700 static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr,
3701 unsigned char *device_id, int index, int buflen)
3706 /* Does controller have VPD for device id? */
3707 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_DEVICE_ID))
3708 return 1; /* not supported */
3710 buf = kzalloc(64, GFP_KERNEL);
3714 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE |
3715 HPSA_VPD_LV_DEVICE_ID, buf, 64);
3719 memcpy(device_id, &buf[8], buflen);
3724 return rc; /*0 - got id, otherwise, didn't */
3727 static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
3728 void *buf, int bufsize,
3729 int extended_response)
3732 struct CommandList *c;
3733 unsigned char scsi3addr[8];
3734 struct ErrorInfo *ei;
3738 /* address the controller */
3739 memset(scsi3addr, 0, sizeof(scsi3addr));
3740 if (fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h,
3741 buf, bufsize, 0, scsi3addr, TYPE_CMD)) {
3745 if (extended_response)
3746 c->Request.CDB[1] = extended_response;
3747 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3752 if (ei->CommandStatus != 0 &&
3753 ei->CommandStatus != CMD_DATA_UNDERRUN) {
3754 hpsa_scsi_interpret_error(h, c);
3757 struct ReportLUNdata *rld = buf;
3759 if (rld->extended_response_flag != extended_response) {
3760 if (!h->legacy_board) {
3761 dev_err(&h->pdev->dev,
3762 "report luns requested format %u, got %u\n",
3764 rld->extended_response_flag);
3775 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
3776 struct ReportExtendedLUNdata *buf, int bufsize)
3779 struct ReportLUNdata *lbuf;
3781 rc = hpsa_scsi_do_report_luns(h, 0, buf, bufsize,
3782 HPSA_REPORT_PHYS_EXTENDED);
3783 if (!rc || rc != -EOPNOTSUPP)
3786 /* REPORT PHYS EXTENDED is not supported */
3787 lbuf = kzalloc(sizeof(*lbuf), GFP_KERNEL);
3791 rc = hpsa_scsi_do_report_luns(h, 0, lbuf, sizeof(*lbuf), 0);
3796 /* Copy ReportLUNdata header */
3797 memcpy(buf, lbuf, 8);
3798 nphys = be32_to_cpu(*((__be32 *)lbuf->LUNListLength)) / 8;
3799 for (i = 0; i < nphys; i++)
3800 memcpy(buf->LUN[i].lunid, lbuf->LUN[i], 8);
3806 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,
3807 struct ReportLUNdata *buf, int bufsize)
3809 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0);
3812 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device,
3813 int bus, int target, int lun)
3816 device->target = target;
3820 /* Use VPD inquiry to get details of volume status */
3821 static int hpsa_get_volume_status(struct ctlr_info *h,
3822 unsigned char scsi3addr[])
3829 buf = kzalloc(64, GFP_KERNEL);
3831 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3833 /* Does controller have VPD for logical volume status? */
3834 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_STATUS))
3837 /* Get the size of the VPD return buffer */
3838 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3839 buf, HPSA_VPD_HEADER_SZ);
3844 /* Now get the whole VPD buffer */
3845 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3846 buf, size + HPSA_VPD_HEADER_SZ);
3849 status = buf[4]; /* status byte */
3855 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3858 /* Determine offline status of a volume.
3861 * 0xff (offline for unknown reasons)
3862 * # (integer code indicating one of several NOT READY states
3863 * describing why a volume is to be kept offline)
3865 static unsigned char hpsa_volume_offline(struct ctlr_info *h,
3866 unsigned char scsi3addr[])
3868 struct CommandList *c;
3869 unsigned char *sense;
3870 u8 sense_key, asc, ascq;
3875 #define ASC_LUN_NOT_READY 0x04
3876 #define ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS 0x04
3877 #define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02
3881 (void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD);
3882 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
3886 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3888 sense = c->err_info->SenseInfo;
3889 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
3890 sense_len = sizeof(c->err_info->SenseInfo);
3892 sense_len = c->err_info->SenseLen;
3893 decode_sense_data(sense, sense_len, &sense_key, &asc, &ascq);
3894 cmd_status = c->err_info->CommandStatus;
3895 scsi_status = c->err_info->ScsiStatus;
3898 /* Determine the reason for not ready state */
3899 ldstat = hpsa_get_volume_status(h, scsi3addr);
3901 /* Keep volume offline in certain cases: */
3903 case HPSA_LV_FAILED:
3904 case HPSA_LV_UNDERGOING_ERASE:
3905 case HPSA_LV_NOT_AVAILABLE:
3906 case HPSA_LV_UNDERGOING_RPI:
3907 case HPSA_LV_PENDING_RPI:
3908 case HPSA_LV_ENCRYPTED_NO_KEY:
3909 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
3910 case HPSA_LV_UNDERGOING_ENCRYPTION:
3911 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
3912 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
3914 case HPSA_VPD_LV_STATUS_UNSUPPORTED:
3915 /* If VPD status page isn't available,
3916 * use ASC/ASCQ to determine state
3918 if ((ascq == ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS) ||
3919 (ascq == ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ))
3928 static int hpsa_update_device_info(struct ctlr_info *h,
3929 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device,
3930 unsigned char *is_OBDR_device)
3933 #define OBDR_SIG_OFFSET 43
3934 #define OBDR_TAPE_SIG "$DR-10"
3935 #define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1)
3936 #define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN)
3938 unsigned char *inq_buff;
3939 unsigned char *obdr_sig;
3942 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
3948 /* Do an inquiry to the device to see what it is. */
3949 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
3950 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
3951 dev_err(&h->pdev->dev,
3952 "%s: inquiry failed, device will be skipped.\n",
3954 rc = HPSA_INQUIRY_FAILED;
3958 scsi_sanitize_inquiry_string(&inq_buff[8], 8);
3959 scsi_sanitize_inquiry_string(&inq_buff[16], 16);
3961 this_device->devtype = (inq_buff[0] & 0x1f);
3962 memcpy(this_device->scsi3addr, scsi3addr, 8);
3963 memcpy(this_device->vendor, &inq_buff[8],
3964 sizeof(this_device->vendor));
3965 memcpy(this_device->model, &inq_buff[16],
3966 sizeof(this_device->model));
3967 this_device->rev = inq_buff[2];
3968 memset(this_device->device_id, 0,
3969 sizeof(this_device->device_id));
3970 if (hpsa_get_device_id(h, scsi3addr, this_device->device_id, 8,
3971 sizeof(this_device->device_id)) < 0) {
3972 dev_err(&h->pdev->dev,
3973 "hpsa%d: %s: can't get device id for [%d:%d:%d:%d]\t%s\t%.16s\n",
3975 h->scsi_host->host_no,
3976 this_device->bus, this_device->target,
3978 scsi_device_type(this_device->devtype),
3979 this_device->model);
3980 rc = HPSA_LV_FAILED;
3984 if ((this_device->devtype == TYPE_DISK ||
3985 this_device->devtype == TYPE_ZBC) &&
3986 is_logical_dev_addr_mode(scsi3addr)) {
3987 unsigned char volume_offline;
3989 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level);
3990 if (h->fw_support & MISC_FW_RAID_OFFLOAD_BASIC)
3991 hpsa_get_ioaccel_status(h, scsi3addr, this_device);
3992 volume_offline = hpsa_volume_offline(h, scsi3addr);
3993 if (volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED &&
3996 * Legacy boards might not support volume status
3998 dev_info(&h->pdev->dev,
3999 "C0:T%d:L%d Volume status not available, assuming online.\n",
4000 this_device->target, this_device->lun);
4003 this_device->volume_offline = volume_offline;
4004 if (volume_offline == HPSA_LV_FAILED) {
4005 rc = HPSA_LV_FAILED;
4006 dev_err(&h->pdev->dev,
4007 "%s: LV failed, device will be skipped.\n",
4012 this_device->raid_level = RAID_UNKNOWN;
4013 this_device->offload_config = 0;
4014 hpsa_turn_off_ioaccel_for_device(this_device);
4015 this_device->hba_ioaccel_enabled = 0;
4016 this_device->volume_offline = 0;
4017 this_device->queue_depth = h->nr_cmds;
4020 if (this_device->external)
4021 this_device->queue_depth = EXTERNAL_QD;
4023 if (is_OBDR_device) {
4024 /* See if this is a One-Button-Disaster-Recovery device
4025 * by looking for "$DR-10" at offset 43 in inquiry data.
4027 obdr_sig = &inq_buff[OBDR_SIG_OFFSET];
4028 *is_OBDR_device = (this_device->devtype == TYPE_ROM &&
4029 strncmp(obdr_sig, OBDR_TAPE_SIG,
4030 OBDR_SIG_LEN) == 0);
4041 * Helper function to assign bus, target, lun mapping of devices.
4042 * Logical drive target and lun are assigned at this time, but
4043 * physical device lun and target assignment are deferred (assigned
4044 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
4046 static void figure_bus_target_lun(struct ctlr_info *h,
4047 u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device)
4049 u32 lunid = get_unaligned_le32(lunaddrbytes);
4051 if (!is_logical_dev_addr_mode(lunaddrbytes)) {
4052 /* physical device, target and lun filled in later */
4053 if (is_hba_lunid(lunaddrbytes)) {
4054 int bus = HPSA_HBA_BUS;
4057 bus = HPSA_LEGACY_HBA_BUS;
4058 hpsa_set_bus_target_lun(device,
4059 bus, 0, lunid & 0x3fff);
4061 /* defer target, lun assignment for physical devices */
4062 hpsa_set_bus_target_lun(device,
4063 HPSA_PHYSICAL_DEVICE_BUS, -1, -1);
4066 /* It's a logical device */
4067 if (device->external) {
4068 hpsa_set_bus_target_lun(device,
4069 HPSA_EXTERNAL_RAID_VOLUME_BUS, (lunid >> 16) & 0x3fff,
4073 hpsa_set_bus_target_lun(device, HPSA_RAID_VOLUME_BUS,
4077 static int figure_external_status(struct ctlr_info *h, int raid_ctlr_position,
4078 int i, int nphysicals, int nlocal_logicals)
4080 /* In report logicals, local logicals are listed first,
4081 * then any externals.
4083 int logicals_start = nphysicals + (raid_ctlr_position == 0);
4085 if (i == raid_ctlr_position)
4088 if (i < logicals_start)
4091 /* i is in logicals range, but still within local logicals */
4092 if ((i - nphysicals - (raid_ctlr_position == 0)) < nlocal_logicals)
4095 return 1; /* it's an external lun */
4099 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
4100 * logdev. The number of luns in physdev and logdev are returned in
4101 * *nphysicals and *nlogicals, respectively.
4102 * Returns 0 on success, -1 otherwise.
4104 static int hpsa_gather_lun_info(struct ctlr_info *h,
4105 struct ReportExtendedLUNdata *physdev, u32 *nphysicals,
4106 struct ReportLUNdata *logdev, u32 *nlogicals)
4108 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
4109 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
4112 *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 24;
4113 if (*nphysicals > HPSA_MAX_PHYS_LUN) {
4114 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded. %d LUNs ignored.\n",
4115 HPSA_MAX_PHYS_LUN, *nphysicals - HPSA_MAX_PHYS_LUN);
4116 *nphysicals = HPSA_MAX_PHYS_LUN;
4118 if (hpsa_scsi_do_report_log_luns(h, logdev, sizeof(*logdev))) {
4119 dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
4122 *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8;
4123 /* Reject Logicals in excess of our max capability. */
4124 if (*nlogicals > HPSA_MAX_LUN) {
4125 dev_warn(&h->pdev->dev,
4126 "maximum logical LUNs (%d) exceeded. "
4127 "%d LUNs ignored.\n", HPSA_MAX_LUN,
4128 *nlogicals - HPSA_MAX_LUN);
4129 *nlogicals = HPSA_MAX_LUN;
4131 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) {
4132 dev_warn(&h->pdev->dev,
4133 "maximum logical + physical LUNs (%d) exceeded. "
4134 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
4135 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN);
4136 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals;
4141 static u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position,
4142 int i, int nphysicals, int nlogicals,
4143 struct ReportExtendedLUNdata *physdev_list,
4144 struct ReportLUNdata *logdev_list)
4146 /* Helper function, figure out where the LUN ID info is coming from
4147 * given index i, lists of physical and logical devices, where in
4148 * the list the raid controller is supposed to appear (first or last)
4151 int logicals_start = nphysicals + (raid_ctlr_position == 0);
4152 int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0);
4154 if (i == raid_ctlr_position)
4155 return RAID_CTLR_LUNID;
4157 if (i < logicals_start)
4158 return &physdev_list->LUN[i -
4159 (raid_ctlr_position == 0)].lunid[0];
4161 if (i < last_device)
4162 return &logdev_list->LUN[i - nphysicals -
4163 (raid_ctlr_position == 0)][0];
4168 /* get physical drive ioaccel handle and queue depth */
4169 static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h,
4170 struct hpsa_scsi_dev_t *dev,
4171 struct ReportExtendedLUNdata *rlep, int rle_index,
4172 struct bmic_identify_physical_device *id_phys)
4175 struct ext_report_lun_entry *rle;
4177 rle = &rlep->LUN[rle_index];
4179 dev->ioaccel_handle = rle->ioaccel_handle;
4180 if ((rle->device_flags & 0x08) && dev->ioaccel_handle)
4181 dev->hba_ioaccel_enabled = 1;
4182 memset(id_phys, 0, sizeof(*id_phys));
4183 rc = hpsa_bmic_id_physical_device(h, &rle->lunid[0],
4184 GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]), id_phys,
4187 /* Reserve space for FW operations */
4188 #define DRIVE_CMDS_RESERVED_FOR_FW 2
4189 #define DRIVE_QUEUE_DEPTH 7
4191 le16_to_cpu(id_phys->current_queue_depth_limit) -
4192 DRIVE_CMDS_RESERVED_FOR_FW;
4194 dev->queue_depth = DRIVE_QUEUE_DEPTH; /* conservative */
4197 static void hpsa_get_path_info(struct hpsa_scsi_dev_t *this_device,
4198 struct ReportExtendedLUNdata *rlep, int rle_index,
4199 struct bmic_identify_physical_device *id_phys)
4201 struct ext_report_lun_entry *rle = &rlep->LUN[rle_index];
4203 if ((rle->device_flags & 0x08) && this_device->ioaccel_handle)
4204 this_device->hba_ioaccel_enabled = 1;
4206 memcpy(&this_device->active_path_index,
4207 &id_phys->active_path_number,
4208 sizeof(this_device->active_path_index));
4209 memcpy(&this_device->path_map,
4210 &id_phys->redundant_path_present_map,
4211 sizeof(this_device->path_map));
4212 memcpy(&this_device->box,
4213 &id_phys->alternate_paths_phys_box_on_port,
4214 sizeof(this_device->box));
4215 memcpy(&this_device->phys_connector,
4216 &id_phys->alternate_paths_phys_connector,
4217 sizeof(this_device->phys_connector));
4218 memcpy(&this_device->bay,
4219 &id_phys->phys_bay_in_box,
4220 sizeof(this_device->bay));
4223 /* get number of local logical disks. */
4224 static int hpsa_set_local_logical_count(struct ctlr_info *h,
4225 struct bmic_identify_controller *id_ctlr,
4231 dev_warn(&h->pdev->dev, "%s: id_ctlr buffer is NULL.\n",
4235 memset(id_ctlr, 0, sizeof(*id_ctlr));
4236 rc = hpsa_bmic_id_controller(h, id_ctlr, sizeof(*id_ctlr));
4238 if (id_ctlr->configured_logical_drive_count < 255)
4239 *nlocals = id_ctlr->configured_logical_drive_count;
4241 *nlocals = le16_to_cpu(
4242 id_ctlr->extended_logical_unit_count);
4248 static bool hpsa_is_disk_spare(struct ctlr_info *h, u8 *lunaddrbytes)
4250 struct bmic_identify_physical_device *id_phys;
4251 bool is_spare = false;
4254 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
4258 rc = hpsa_bmic_id_physical_device(h,
4260 GET_BMIC_DRIVE_NUMBER(lunaddrbytes),
4261 id_phys, sizeof(*id_phys));
4263 is_spare = (id_phys->more_flags >> 6) & 0x01;
4269 #define RPL_DEV_FLAG_NON_DISK 0x1
4270 #define RPL_DEV_FLAG_UNCONFIG_DISK_REPORTING_SUPPORTED 0x2
4271 #define RPL_DEV_FLAG_UNCONFIG_DISK 0x4
4273 #define BMIC_DEVICE_TYPE_ENCLOSURE 6
4275 static bool hpsa_skip_device(struct ctlr_info *h, u8 *lunaddrbytes,
4276 struct ext_report_lun_entry *rle)
4281 if (!MASKED_DEVICE(lunaddrbytes))
4284 device_flags = rle->device_flags;
4285 device_type = rle->device_type;
4287 if (device_flags & RPL_DEV_FLAG_NON_DISK) {
4288 if (device_type == BMIC_DEVICE_TYPE_ENCLOSURE)
4293 if (!(device_flags & RPL_DEV_FLAG_UNCONFIG_DISK_REPORTING_SUPPORTED))
4296 if (device_flags & RPL_DEV_FLAG_UNCONFIG_DISK)
4300 * Spares may be spun down, we do not want to
4301 * do an Inquiry to a RAID set spare drive as
4302 * that would have them spun up, that is a
4303 * performance hit because I/O to the RAID device
4304 * stops while the spin up occurs which can take
4307 if (hpsa_is_disk_spare(h, lunaddrbytes))
4313 static void hpsa_update_scsi_devices(struct ctlr_info *h)
4315 /* the idea here is we could get notified
4316 * that some devices have changed, so we do a report
4317 * physical luns and report logical luns cmd, and adjust
4318 * our list of devices accordingly.
4320 * The scsi3addr's of devices won't change so long as the
4321 * adapter is not reset. That means we can rescan and
4322 * tell which devices we already know about, vs. new
4323 * devices, vs. disappearing devices.
4325 struct ReportExtendedLUNdata *physdev_list = NULL;
4326 struct ReportLUNdata *logdev_list = NULL;
4327 struct bmic_identify_physical_device *id_phys = NULL;
4328 struct bmic_identify_controller *id_ctlr = NULL;
4331 u32 nlocal_logicals = 0;
4332 u32 ndev_allocated = 0;
4333 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
4335 int i, n_ext_target_devs, ndevs_to_allocate;
4336 int raid_ctlr_position;
4337 bool physical_device;
4338 DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS);
4340 currentsd = kcalloc(HPSA_MAX_DEVICES, sizeof(*currentsd), GFP_KERNEL);
4341 physdev_list = kzalloc(sizeof(*physdev_list), GFP_KERNEL);
4342 logdev_list = kzalloc(sizeof(*logdev_list), GFP_KERNEL);
4343 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL);
4344 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
4345 id_ctlr = kzalloc(sizeof(*id_ctlr), GFP_KERNEL);
4347 if (!currentsd || !physdev_list || !logdev_list ||
4348 !tmpdevice || !id_phys || !id_ctlr) {
4349 dev_err(&h->pdev->dev, "out of memory\n");
4352 memset(lunzerobits, 0, sizeof(lunzerobits));
4354 h->drv_req_rescan = 0; /* cancel scheduled rescan - we're doing it. */
4356 if (hpsa_gather_lun_info(h, physdev_list, &nphysicals,
4357 logdev_list, &nlogicals)) {
4358 h->drv_req_rescan = 1;
4362 /* Set number of local logicals (non PTRAID) */
4363 if (hpsa_set_local_logical_count(h, id_ctlr, &nlocal_logicals)) {
4364 dev_warn(&h->pdev->dev,
4365 "%s: Can't determine number of local logical devices.\n",
4369 /* We might see up to the maximum number of logical and physical disks
4370 * plus external target devices, and a device for the local RAID
4373 ndevs_to_allocate = nphysicals + nlogicals + MAX_EXT_TARGETS + 1;
4375 hpsa_ext_ctrl_present(h, physdev_list);
4377 /* Allocate the per device structures */
4378 for (i = 0; i < ndevs_to_allocate; i++) {
4379 if (i >= HPSA_MAX_DEVICES) {
4380 dev_warn(&h->pdev->dev, "maximum devices (%d) exceeded."
4381 " %d devices ignored.\n", HPSA_MAX_DEVICES,
4382 ndevs_to_allocate - HPSA_MAX_DEVICES);
4386 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL);
4387 if (!currentsd[i]) {
4388 h->drv_req_rescan = 1;
4394 if (is_scsi_rev_5(h))
4395 raid_ctlr_position = 0;
4397 raid_ctlr_position = nphysicals + nlogicals;
4399 /* adjust our table of devices */
4400 n_ext_target_devs = 0;
4401 for (i = 0; i < nphysicals + nlogicals + 1; i++) {
4402 u8 *lunaddrbytes, is_OBDR = 0;
4404 int phys_dev_index = i - (raid_ctlr_position == 0);
4405 bool skip_device = false;
4407 memset(tmpdevice, 0, sizeof(*tmpdevice));
4409 physical_device = i < nphysicals + (raid_ctlr_position == 0);
4411 /* Figure out where the LUN ID info is coming from */
4412 lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position,
4413 i, nphysicals, nlogicals, physdev_list, logdev_list);
4415 /* Determine if this is a lun from an external target array */
4416 tmpdevice->external =
4417 figure_external_status(h, raid_ctlr_position, i,
4418 nphysicals, nlocal_logicals);
4421 * Skip over some devices such as a spare.
4423 if (!tmpdevice->external && physical_device) {
4424 skip_device = hpsa_skip_device(h, lunaddrbytes,
4425 &physdev_list->LUN[phys_dev_index]);
4430 /* Get device type, vendor, model, device id, raid_map */
4431 rc = hpsa_update_device_info(h, lunaddrbytes, tmpdevice,
4433 if (rc == -ENOMEM) {
4434 dev_warn(&h->pdev->dev,
4435 "Out of memory, rescan deferred.\n");
4436 h->drv_req_rescan = 1;
4440 h->drv_req_rescan = 1;
4444 figure_bus_target_lun(h, lunaddrbytes, tmpdevice);
4445 this_device = currentsd[ncurrent];
4447 *this_device = *tmpdevice;
4448 this_device->physical_device = physical_device;
4451 * Expose all devices except for physical devices that
4454 if (MASKED_DEVICE(lunaddrbytes) && this_device->physical_device)
4455 this_device->expose_device = 0;
4457 this_device->expose_device = 1;
4461 * Get the SAS address for physical devices that are exposed.
4463 if (this_device->physical_device && this_device->expose_device)
4464 hpsa_get_sas_address(h, lunaddrbytes, this_device);
4466 switch (this_device->devtype) {
4468 /* We don't *really* support actual CD-ROM devices,
4469 * just "One Button Disaster Recovery" tape drive
4470 * which temporarily pretends to be a CD-ROM drive.
4471 * So we check that the device is really an OBDR tape
4472 * device by checking for "$DR-10" in bytes 43-48 of
4480 if (this_device->physical_device) {
4481 /* The disk is in HBA mode. */
4482 /* Never use RAID mapper in HBA mode. */
4483 this_device->offload_enabled = 0;
4484 hpsa_get_ioaccel_drive_info(h, this_device,
4485 physdev_list, phys_dev_index, id_phys);
4486 hpsa_get_path_info(this_device,
4487 physdev_list, phys_dev_index, id_phys);
4492 case TYPE_MEDIUM_CHANGER:
4495 case TYPE_ENCLOSURE:
4496 if (!this_device->external)
4497 hpsa_get_enclosure_info(h, lunaddrbytes,
4498 physdev_list, phys_dev_index,
4503 /* Only present the Smartarray HBA as a RAID controller.
4504 * If it's a RAID controller other than the HBA itself
4505 * (an external RAID controller, MSA500 or similar)
4508 if (!is_hba_lunid(lunaddrbytes))
4515 if (ncurrent >= HPSA_MAX_DEVICES)
4519 if (h->sas_host == NULL) {
4522 rc = hpsa_add_sas_host(h);
4524 dev_warn(&h->pdev->dev,
4525 "Could not add sas host %d\n", rc);
4530 adjust_hpsa_scsi_table(h, currentsd, ncurrent);
4533 for (i = 0; i < ndev_allocated; i++)
4534 kfree(currentsd[i]);
4536 kfree(physdev_list);
4542 static void hpsa_set_sg_descriptor(struct SGDescriptor *desc,
4543 struct scatterlist *sg)
4545 u64 addr64 = (u64) sg_dma_address(sg);
4546 unsigned int len = sg_dma_len(sg);
4548 desc->Addr = cpu_to_le64(addr64);
4549 desc->Len = cpu_to_le32(len);
4554 * hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
4555 * dma mapping and fills in the scatter gather entries of the
4558 static int hpsa_scatter_gather(struct ctlr_info *h,
4559 struct CommandList *cp,
4560 struct scsi_cmnd *cmd)
4562 struct scatterlist *sg;
4563 int use_sg, i, sg_limit, chained, last_sg;
4564 struct SGDescriptor *curr_sg;
4566 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
4568 use_sg = scsi_dma_map(cmd);
4573 goto sglist_finished;
4576 * If the number of entries is greater than the max for a single list,
4577 * then we have a chained list; we will set up all but one entry in the
4578 * first list (the last entry is saved for link information);
4579 * otherwise, we don't have a chained list and we'll set up at each of
4580 * the entries in the one list.
4583 chained = use_sg > h->max_cmd_sg_entries;
4584 sg_limit = chained ? h->max_cmd_sg_entries - 1 : use_sg;
4585 last_sg = scsi_sg_count(cmd) - 1;
4586 scsi_for_each_sg(cmd, sg, sg_limit, i) {
4587 hpsa_set_sg_descriptor(curr_sg, sg);
4593 * Continue with the chained list. Set curr_sg to the chained
4594 * list. Modify the limit to the total count less the entries
4595 * we've already set up. Resume the scan at the list entry
4596 * where the previous loop left off.
4598 curr_sg = h->cmd_sg_list[cp->cmdindex];
4599 sg_limit = use_sg - sg_limit;
4600 for_each_sg(sg, sg, sg_limit, i) {
4601 hpsa_set_sg_descriptor(curr_sg, sg);
4606 /* Back the pointer up to the last entry and mark it as "last". */
4607 (curr_sg - 1)->Ext = cpu_to_le32(HPSA_SG_LAST);
4609 if (use_sg + chained > h->maxSG)
4610 h->maxSG = use_sg + chained;
4613 cp->Header.SGList = h->max_cmd_sg_entries;
4614 cp->Header.SGTotal = cpu_to_le16(use_sg + 1);
4615 if (hpsa_map_sg_chain_block(h, cp)) {
4616 scsi_dma_unmap(cmd);
4624 cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */
4625 cp->Header.SGTotal = cpu_to_le16(use_sg); /* total sgs in cmd list */
4629 static inline void warn_zero_length_transfer(struct ctlr_info *h,
4630 u8 *cdb, int cdb_len,
4633 dev_warn(&h->pdev->dev,
4634 "%s: Blocking zero-length request: CDB:%*phN\n",
4635 func, cdb_len, cdb);
4638 #define IO_ACCEL_INELIGIBLE 1
4639 /* zero-length transfers trigger hardware errors. */
4640 static bool is_zero_length_transfer(u8 *cdb)
4644 /* Block zero-length transfer sizes on certain commands. */
4648 case VERIFY: /* 0x2F */
4649 case WRITE_VERIFY: /* 0x2E */
4650 block_cnt = get_unaligned_be16(&cdb[7]);
4654 case VERIFY_12: /* 0xAF */
4655 case WRITE_VERIFY_12: /* 0xAE */
4656 block_cnt = get_unaligned_be32(&cdb[6]);
4660 case VERIFY_16: /* 0x8F */
4661 block_cnt = get_unaligned_be32(&cdb[10]);
4667 return block_cnt == 0;
4670 static int fixup_ioaccel_cdb(u8 *cdb, int *cdb_len)
4676 /* Perform some CDB fixups if needed using 10 byte reads/writes only */
4684 if (*cdb_len == 6) {
4685 block = (((cdb[1] & 0x1F) << 16) |
4692 BUG_ON(*cdb_len != 12);
4693 block = get_unaligned_be32(&cdb[2]);
4694 block_cnt = get_unaligned_be32(&cdb[6]);
4696 if (block_cnt > 0xffff)
4697 return IO_ACCEL_INELIGIBLE;
4699 cdb[0] = is_write ? WRITE_10 : READ_10;
4701 cdb[2] = (u8) (block >> 24);
4702 cdb[3] = (u8) (block >> 16);
4703 cdb[4] = (u8) (block >> 8);
4704 cdb[5] = (u8) (block);
4706 cdb[7] = (u8) (block_cnt >> 8);
4707 cdb[8] = (u8) (block_cnt);
4715 static int hpsa_scsi_ioaccel1_queue_command(struct ctlr_info *h,
4716 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4717 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4719 struct scsi_cmnd *cmd = c->scsi_cmd;
4720 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
4722 unsigned int total_len = 0;
4723 struct scatterlist *sg;
4726 struct SGDescriptor *curr_sg;
4727 u32 control = IOACCEL1_CONTROL_SIMPLEQUEUE;
4729 /* TODO: implement chaining support */
4730 if (scsi_sg_count(cmd) > h->ioaccel_maxsg) {
4731 atomic_dec(&phys_disk->ioaccel_cmds_out);
4732 return IO_ACCEL_INELIGIBLE;
4735 BUG_ON(cmd->cmd_len > IOACCEL1_IOFLAGS_CDBLEN_MAX);
4737 if (is_zero_length_transfer(cdb)) {
4738 warn_zero_length_transfer(h, cdb, cdb_len, __func__);
4739 atomic_dec(&phys_disk->ioaccel_cmds_out);
4740 return IO_ACCEL_INELIGIBLE;
4743 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4744 atomic_dec(&phys_disk->ioaccel_cmds_out);
4745 return IO_ACCEL_INELIGIBLE;
4748 c->cmd_type = CMD_IOACCEL1;
4750 /* Adjust the DMA address to point to the accelerated command buffer */
4751 c->busaddr = (u32) h->ioaccel_cmd_pool_dhandle +
4752 (c->cmdindex * sizeof(*cp));
4753 BUG_ON(c->busaddr & 0x0000007F);
4755 use_sg = scsi_dma_map(cmd);
4757 atomic_dec(&phys_disk->ioaccel_cmds_out);
4763 scsi_for_each_sg(cmd, sg, use_sg, i) {
4764 addr64 = (u64) sg_dma_address(sg);
4765 len = sg_dma_len(sg);
4767 curr_sg->Addr = cpu_to_le64(addr64);
4768 curr_sg->Len = cpu_to_le32(len);
4769 curr_sg->Ext = cpu_to_le32(0);
4772 (--curr_sg)->Ext = cpu_to_le32(HPSA_SG_LAST);
4774 switch (cmd->sc_data_direction) {
4776 control |= IOACCEL1_CONTROL_DATA_OUT;
4778 case DMA_FROM_DEVICE:
4779 control |= IOACCEL1_CONTROL_DATA_IN;
4782 control |= IOACCEL1_CONTROL_NODATAXFER;
4785 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4786 cmd->sc_data_direction);
4791 control |= IOACCEL1_CONTROL_NODATAXFER;
4794 c->Header.SGList = use_sg;
4795 /* Fill out the command structure to submit */
4796 cp->dev_handle = cpu_to_le16(ioaccel_handle & 0xFFFF);
4797 cp->transfer_len = cpu_to_le32(total_len);
4798 cp->io_flags = cpu_to_le16(IOACCEL1_IOFLAGS_IO_REQ |
4799 (cdb_len & IOACCEL1_IOFLAGS_CDBLEN_MASK));
4800 cp->control = cpu_to_le32(control);
4801 memcpy(cp->CDB, cdb, cdb_len);
4802 memcpy(cp->CISS_LUN, scsi3addr, 8);
4803 /* Tag was already set at init time. */
4804 enqueue_cmd_and_start_io(h, c);
4809 * Queue a command directly to a device behind the controller using the
4810 * I/O accelerator path.
4812 static int hpsa_scsi_ioaccel_direct_map(struct ctlr_info *h,
4813 struct CommandList *c)
4815 struct scsi_cmnd *cmd = c->scsi_cmd;
4816 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4826 return hpsa_scsi_ioaccel_queue_command(h, c, dev->ioaccel_handle,
4827 cmd->cmnd, cmd->cmd_len, dev->scsi3addr, dev);
4831 * Set encryption parameters for the ioaccel2 request
4833 static void set_encrypt_ioaccel2(struct ctlr_info *h,
4834 struct CommandList *c, struct io_accel2_cmd *cp)
4836 struct scsi_cmnd *cmd = c->scsi_cmd;
4837 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4838 struct raid_map_data *map = &dev->raid_map;
4841 /* Are we doing encryption on this device */
4842 if (!(le16_to_cpu(map->flags) & RAID_MAP_FLAG_ENCRYPT_ON))
4844 /* Set the data encryption key index. */
4845 cp->dekindex = map->dekindex;
4847 /* Set the encryption enable flag, encoded into direction field. */
4848 cp->direction |= IOACCEL2_DIRECTION_ENCRYPT_MASK;
4850 /* Set encryption tweak values based on logical block address
4851 * If block size is 512, tweak value is LBA.
4852 * For other block sizes, tweak is (LBA * block size)/ 512)
4854 switch (cmd->cmnd[0]) {
4855 /* Required? 6-byte cdbs eliminated by fixup_ioaccel_cdb */
4858 first_block = (((cmd->cmnd[1] & 0x1F) << 16) |
4859 (cmd->cmnd[2] << 8) |
4864 /* Required? 12-byte cdbs eliminated by fixup_ioaccel_cdb */
4867 first_block = get_unaligned_be32(&cmd->cmnd[2]);
4871 first_block = get_unaligned_be64(&cmd->cmnd[2]);
4874 dev_err(&h->pdev->dev,
4875 "ERROR: %s: size (0x%x) not supported for encryption\n",
4876 __func__, cmd->cmnd[0]);
4881 if (le32_to_cpu(map->volume_blk_size) != 512)
4882 first_block = first_block *
4883 le32_to_cpu(map->volume_blk_size)/512;
4885 cp->tweak_lower = cpu_to_le32(first_block);
4886 cp->tweak_upper = cpu_to_le32(first_block >> 32);
4889 static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h,
4890 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4891 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4893 struct scsi_cmnd *cmd = c->scsi_cmd;
4894 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
4895 struct ioaccel2_sg_element *curr_sg;
4897 struct scatterlist *sg;
4905 if (!cmd->device->hostdata)
4908 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
4910 if (is_zero_length_transfer(cdb)) {
4911 warn_zero_length_transfer(h, cdb, cdb_len, __func__);
4912 atomic_dec(&phys_disk->ioaccel_cmds_out);
4913 return IO_ACCEL_INELIGIBLE;
4916 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4917 atomic_dec(&phys_disk->ioaccel_cmds_out);
4918 return IO_ACCEL_INELIGIBLE;
4921 c->cmd_type = CMD_IOACCEL2;
4922 /* Adjust the DMA address to point to the accelerated command buffer */
4923 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
4924 (c->cmdindex * sizeof(*cp));
4925 BUG_ON(c->busaddr & 0x0000007F);
4927 memset(cp, 0, sizeof(*cp));
4928 cp->IU_type = IOACCEL2_IU_TYPE;
4930 use_sg = scsi_dma_map(cmd);
4932 atomic_dec(&phys_disk->ioaccel_cmds_out);
4938 if (use_sg > h->ioaccel_maxsg) {
4939 addr64 = le64_to_cpu(
4940 h->ioaccel2_cmd_sg_list[c->cmdindex]->address);
4941 curr_sg->address = cpu_to_le64(addr64);
4942 curr_sg->length = 0;
4943 curr_sg->reserved[0] = 0;
4944 curr_sg->reserved[1] = 0;
4945 curr_sg->reserved[2] = 0;
4946 curr_sg->chain_indicator = IOACCEL2_CHAIN;
4948 curr_sg = h->ioaccel2_cmd_sg_list[c->cmdindex];
4950 scsi_for_each_sg(cmd, sg, use_sg, i) {
4951 addr64 = (u64) sg_dma_address(sg);
4952 len = sg_dma_len(sg);
4954 curr_sg->address = cpu_to_le64(addr64);
4955 curr_sg->length = cpu_to_le32(len);
4956 curr_sg->reserved[0] = 0;
4957 curr_sg->reserved[1] = 0;
4958 curr_sg->reserved[2] = 0;
4959 curr_sg->chain_indicator = 0;
4964 * Set the last s/g element bit
4966 (curr_sg - 1)->chain_indicator = IOACCEL2_LAST_SG;
4968 switch (cmd->sc_data_direction) {
4970 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4971 cp->direction |= IOACCEL2_DIR_DATA_OUT;
4973 case DMA_FROM_DEVICE:
4974 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4975 cp->direction |= IOACCEL2_DIR_DATA_IN;
4978 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4979 cp->direction |= IOACCEL2_DIR_NO_DATA;
4982 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4983 cmd->sc_data_direction);
4988 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4989 cp->direction |= IOACCEL2_DIR_NO_DATA;
4992 /* Set encryption parameters, if necessary */
4993 set_encrypt_ioaccel2(h, c, cp);
4995 cp->scsi_nexus = cpu_to_le32(ioaccel_handle);
4996 cp->Tag = cpu_to_le32(c->cmdindex << DIRECT_LOOKUP_SHIFT);
4997 memcpy(cp->cdb, cdb, sizeof(cp->cdb));
4999 cp->data_len = cpu_to_le32(total_len);
5000 cp->err_ptr = cpu_to_le64(c->busaddr +
5001 offsetof(struct io_accel2_cmd, error_data));
5002 cp->err_len = cpu_to_le32(sizeof(cp->error_data));
5004 /* fill in sg elements */
5005 if (use_sg > h->ioaccel_maxsg) {
5007 cp->sg[0].length = cpu_to_le32(use_sg * sizeof(cp->sg[0]));
5008 if (hpsa_map_ioaccel2_sg_chain_block(h, cp, c)) {
5009 atomic_dec(&phys_disk->ioaccel_cmds_out);
5010 scsi_dma_unmap(cmd);
5014 cp->sg_count = (u8) use_sg;
5016 if (phys_disk->in_reset) {
5017 cmd->result = DID_RESET << 16;
5021 enqueue_cmd_and_start_io(h, c);
5026 * Queue a command to the correct I/O accelerator path.
5028 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
5029 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
5030 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
5032 if (!c->scsi_cmd->device)
5035 if (!c->scsi_cmd->device->hostdata)
5038 if (phys_disk->in_reset)
5041 /* Try to honor the device's queue depth */
5042 if (atomic_inc_return(&phys_disk->ioaccel_cmds_out) >
5043 phys_disk->queue_depth) {
5044 atomic_dec(&phys_disk->ioaccel_cmds_out);
5045 return IO_ACCEL_INELIGIBLE;
5047 if (h->transMethod & CFGTBL_Trans_io_accel1)
5048 return hpsa_scsi_ioaccel1_queue_command(h, c, ioaccel_handle,
5049 cdb, cdb_len, scsi3addr,
5052 return hpsa_scsi_ioaccel2_queue_command(h, c, ioaccel_handle,
5053 cdb, cdb_len, scsi3addr,
5057 static void raid_map_helper(struct raid_map_data *map,
5058 int offload_to_mirror, u32 *map_index, u32 *current_group)
5060 if (offload_to_mirror == 0) {
5061 /* use physical disk in the first mirrored group. */
5062 *map_index %= le16_to_cpu(map->data_disks_per_row);
5066 /* determine mirror group that *map_index indicates */
5067 *current_group = *map_index /
5068 le16_to_cpu(map->data_disks_per_row);
5069 if (offload_to_mirror == *current_group)
5071 if (*current_group < le16_to_cpu(map->layout_map_count) - 1) {
5072 /* select map index from next group */
5073 *map_index += le16_to_cpu(map->data_disks_per_row);
5076 /* select map index from first group */
5077 *map_index %= le16_to_cpu(map->data_disks_per_row);
5080 } while (offload_to_mirror != *current_group);
5084 * Attempt to perform offload RAID mapping for a logical volume I/O.
5086 static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h,
5087 struct CommandList *c)
5089 struct scsi_cmnd *cmd = c->scsi_cmd;
5090 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
5091 struct raid_map_data *map = &dev->raid_map;
5092 struct raid_map_disk_data *dd = &map->data[0];
5095 u64 first_block, last_block;
5098 u64 first_row, last_row;
5099 u32 first_row_offset, last_row_offset;
5100 u32 first_column, last_column;
5101 u64 r0_first_row, r0_last_row;
5102 u32 r5or6_blocks_per_row;
5103 u64 r5or6_first_row, r5or6_last_row;
5104 u32 r5or6_first_row_offset, r5or6_last_row_offset;
5105 u32 r5or6_first_column, r5or6_last_column;
5106 u32 total_disks_per_row;
5108 u32 first_group, last_group, current_group;
5116 #if BITS_PER_LONG == 32
5119 int offload_to_mirror;
5127 /* check for valid opcode, get LBA and block count */
5128 switch (cmd->cmnd[0]) {
5133 first_block = (((cmd->cmnd[1] & 0x1F) << 16) |
5134 (cmd->cmnd[2] << 8) |
5136 block_cnt = cmd->cmnd[4];
5145 (((u64) cmd->cmnd[2]) << 24) |
5146 (((u64) cmd->cmnd[3]) << 16) |
5147 (((u64) cmd->cmnd[4]) << 8) |
5150 (((u32) cmd->cmnd[7]) << 8) |
5158 (((u64) cmd->cmnd[2]) << 24) |
5159 (((u64) cmd->cmnd[3]) << 16) |
5160 (((u64) cmd->cmnd[4]) << 8) |
5163 (((u32) cmd->cmnd[6]) << 24) |
5164 (((u32) cmd->cmnd[7]) << 16) |
5165 (((u32) cmd->cmnd[8]) << 8) |
5173 (((u64) cmd->cmnd[2]) << 56) |
5174 (((u64) cmd->cmnd[3]) << 48) |
5175 (((u64) cmd->cmnd[4]) << 40) |
5176 (((u64) cmd->cmnd[5]) << 32) |
5177 (((u64) cmd->cmnd[6]) << 24) |
5178 (((u64) cmd->cmnd[7]) << 16) |
5179 (((u64) cmd->cmnd[8]) << 8) |
5182 (((u32) cmd->cmnd[10]) << 24) |
5183 (((u32) cmd->cmnd[11]) << 16) |
5184 (((u32) cmd->cmnd[12]) << 8) |
5188 return IO_ACCEL_INELIGIBLE; /* process via normal I/O path */
5190 last_block = first_block + block_cnt - 1;
5192 /* check for write to non-RAID-0 */
5193 if (is_write && dev->raid_level != 0)
5194 return IO_ACCEL_INELIGIBLE;
5196 /* check for invalid block or wraparound */
5197 if (last_block >= le64_to_cpu(map->volume_blk_cnt) ||
5198 last_block < first_block)
5199 return IO_ACCEL_INELIGIBLE;
5201 /* calculate stripe information for the request */
5202 blocks_per_row = le16_to_cpu(map->data_disks_per_row) *
5203 le16_to_cpu(map->strip_size);
5204 strip_size = le16_to_cpu(map->strip_size);
5205 #if BITS_PER_LONG == 32
5206 tmpdiv = first_block;
5207 (void) do_div(tmpdiv, blocks_per_row);
5209 tmpdiv = last_block;
5210 (void) do_div(tmpdiv, blocks_per_row);
5212 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
5213 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
5214 tmpdiv = first_row_offset;
5215 (void) do_div(tmpdiv, strip_size);
5216 first_column = tmpdiv;
5217 tmpdiv = last_row_offset;
5218 (void) do_div(tmpdiv, strip_size);
5219 last_column = tmpdiv;
5221 first_row = first_block / blocks_per_row;
5222 last_row = last_block / blocks_per_row;
5223 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
5224 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
5225 first_column = first_row_offset / strip_size;
5226 last_column = last_row_offset / strip_size;
5229 /* if this isn't a single row/column then give to the controller */
5230 if ((first_row != last_row) || (first_column != last_column))
5231 return IO_ACCEL_INELIGIBLE;
5233 /* proceeding with driver mapping */
5234 total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
5235 le16_to_cpu(map->metadata_disks_per_row);
5236 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
5237 le16_to_cpu(map->row_cnt);
5238 map_index = (map_row * total_disks_per_row) + first_column;
5240 switch (dev->raid_level) {
5242 break; /* nothing special to do */
5244 /* Handles load balance across RAID 1 members.
5245 * (2-drive R1 and R10 with even # of drives.)
5246 * Appropriate for SSDs, not optimal for HDDs
5247 * Ensure we have the correct raid_map.
5249 if (le16_to_cpu(map->layout_map_count) != 2) {
5250 hpsa_turn_off_ioaccel_for_device(dev);
5251 return IO_ACCEL_INELIGIBLE;
5253 if (dev->offload_to_mirror)
5254 map_index += le16_to_cpu(map->data_disks_per_row);
5255 dev->offload_to_mirror = !dev->offload_to_mirror;
5258 /* Handles N-way mirrors (R1-ADM)
5259 * and R10 with # of drives divisible by 3.)
5260 * Ensure we have the correct raid_map.
5262 if (le16_to_cpu(map->layout_map_count) != 3) {
5263 hpsa_turn_off_ioaccel_for_device(dev);
5264 return IO_ACCEL_INELIGIBLE;
5267 offload_to_mirror = dev->offload_to_mirror;
5268 raid_map_helper(map, offload_to_mirror,
5269 &map_index, ¤t_group);
5270 /* set mirror group to use next time */
5272 (offload_to_mirror >=
5273 le16_to_cpu(map->layout_map_count) - 1)
5274 ? 0 : offload_to_mirror + 1;
5275 dev->offload_to_mirror = offload_to_mirror;
5276 /* Avoid direct use of dev->offload_to_mirror within this
5277 * function since multiple threads might simultaneously
5278 * increment it beyond the range of dev->layout_map_count -1.
5283 if (le16_to_cpu(map->layout_map_count) <= 1)
5286 /* Verify first and last block are in same RAID group */
5287 r5or6_blocks_per_row =
5288 le16_to_cpu(map->strip_size) *
5289 le16_to_cpu(map->data_disks_per_row);
5290 if (r5or6_blocks_per_row == 0) {
5291 hpsa_turn_off_ioaccel_for_device(dev);
5292 return IO_ACCEL_INELIGIBLE;
5294 stripesize = r5or6_blocks_per_row *
5295 le16_to_cpu(map->layout_map_count);
5296 #if BITS_PER_LONG == 32
5297 tmpdiv = first_block;
5298 first_group = do_div(tmpdiv, stripesize);
5299 tmpdiv = first_group;
5300 (void) do_div(tmpdiv, r5or6_blocks_per_row);
5301 first_group = tmpdiv;
5302 tmpdiv = last_block;
5303 last_group = do_div(tmpdiv, stripesize);
5304 tmpdiv = last_group;
5305 (void) do_div(tmpdiv, r5or6_blocks_per_row);
5306 last_group = tmpdiv;
5308 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
5309 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
5311 if (first_group != last_group)
5312 return IO_ACCEL_INELIGIBLE;
5314 /* Verify request is in a single row of RAID 5/6 */
5315 #if BITS_PER_LONG == 32
5316 tmpdiv = first_block;
5317 (void) do_div(tmpdiv, stripesize);
5318 first_row = r5or6_first_row = r0_first_row = tmpdiv;
5319 tmpdiv = last_block;
5320 (void) do_div(tmpdiv, stripesize);
5321 r5or6_last_row = r0_last_row = tmpdiv;
5323 first_row = r5or6_first_row = r0_first_row =
5324 first_block / stripesize;
5325 r5or6_last_row = r0_last_row = last_block / stripesize;
5327 if (r5or6_first_row != r5or6_last_row)
5328 return IO_ACCEL_INELIGIBLE;
5331 /* Verify request is in a single column */
5332 #if BITS_PER_LONG == 32
5333 tmpdiv = first_block;
5334 first_row_offset = do_div(tmpdiv, stripesize);
5335 tmpdiv = first_row_offset;
5336 first_row_offset = (u32) do_div(tmpdiv, r5or6_blocks_per_row);
5337 r5or6_first_row_offset = first_row_offset;
5338 tmpdiv = last_block;
5339 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
5340 tmpdiv = r5or6_last_row_offset;
5341 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
5342 tmpdiv = r5or6_first_row_offset;
5343 (void) do_div(tmpdiv, map->strip_size);
5344 first_column = r5or6_first_column = tmpdiv;
5345 tmpdiv = r5or6_last_row_offset;
5346 (void) do_div(tmpdiv, map->strip_size);
5347 r5or6_last_column = tmpdiv;
5349 first_row_offset = r5or6_first_row_offset =
5350 (u32)((first_block % stripesize) %
5351 r5or6_blocks_per_row);
5353 r5or6_last_row_offset =
5354 (u32)((last_block % stripesize) %
5355 r5or6_blocks_per_row);
5357 first_column = r5or6_first_column =
5358 r5or6_first_row_offset / le16_to_cpu(map->strip_size);
5360 r5or6_last_row_offset / le16_to_cpu(map->strip_size);
5362 if (r5or6_first_column != r5or6_last_column)
5363 return IO_ACCEL_INELIGIBLE;
5365 /* Request is eligible */
5366 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
5367 le16_to_cpu(map->row_cnt);
5369 map_index = (first_group *
5370 (le16_to_cpu(map->row_cnt) * total_disks_per_row)) +
5371 (map_row * total_disks_per_row) + first_column;
5374 return IO_ACCEL_INELIGIBLE;
5377 if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES))
5378 return IO_ACCEL_INELIGIBLE;
5380 c->phys_disk = dev->phys_disk[map_index];
5382 return IO_ACCEL_INELIGIBLE;
5384 disk_handle = dd[map_index].ioaccel_handle;
5385 disk_block = le64_to_cpu(map->disk_starting_blk) +
5386 first_row * le16_to_cpu(map->strip_size) +
5387 (first_row_offset - first_column *
5388 le16_to_cpu(map->strip_size));
5389 disk_block_cnt = block_cnt;
5391 /* handle differing logical/physical block sizes */
5392 if (map->phys_blk_shift) {
5393 disk_block <<= map->phys_blk_shift;
5394 disk_block_cnt <<= map->phys_blk_shift;
5396 BUG_ON(disk_block_cnt > 0xffff);
5398 /* build the new CDB for the physical disk I/O */
5399 if (disk_block > 0xffffffff) {
5400 cdb[0] = is_write ? WRITE_16 : READ_16;
5402 cdb[2] = (u8) (disk_block >> 56);
5403 cdb[3] = (u8) (disk_block >> 48);
5404 cdb[4] = (u8) (disk_block >> 40);
5405 cdb[5] = (u8) (disk_block >> 32);
5406 cdb[6] = (u8) (disk_block >> 24);
5407 cdb[7] = (u8) (disk_block >> 16);
5408 cdb[8] = (u8) (disk_block >> 8);
5409 cdb[9] = (u8) (disk_block);
5410 cdb[10] = (u8) (disk_block_cnt >> 24);
5411 cdb[11] = (u8) (disk_block_cnt >> 16);
5412 cdb[12] = (u8) (disk_block_cnt >> 8);
5413 cdb[13] = (u8) (disk_block_cnt);
5418 cdb[0] = is_write ? WRITE_10 : READ_10;
5420 cdb[2] = (u8) (disk_block >> 24);
5421 cdb[3] = (u8) (disk_block >> 16);
5422 cdb[4] = (u8) (disk_block >> 8);
5423 cdb[5] = (u8) (disk_block);
5425 cdb[7] = (u8) (disk_block_cnt >> 8);
5426 cdb[8] = (u8) (disk_block_cnt);
5430 return hpsa_scsi_ioaccel_queue_command(h, c, disk_handle, cdb, cdb_len,
5432 dev->phys_disk[map_index]);
5436 * Submit commands down the "normal" RAID stack path
5437 * All callers to hpsa_ciss_submit must check lockup_detected
5438 * beforehand, before (opt.) and after calling cmd_alloc
5440 static int hpsa_ciss_submit(struct ctlr_info *h,
5441 struct CommandList *c, struct scsi_cmnd *cmd,
5442 struct hpsa_scsi_dev_t *dev)
5444 cmd->host_scribble = (unsigned char *) c;
5445 c->cmd_type = CMD_SCSI;
5447 c->Header.ReplyQueue = 0; /* unused in simple mode */
5448 memcpy(&c->Header.LUN.LunAddrBytes[0], &dev->scsi3addr[0], 8);
5449 c->Header.tag = cpu_to_le64((c->cmdindex << DIRECT_LOOKUP_SHIFT));
5451 /* Fill in the request block... */
5453 c->Request.Timeout = 0;
5454 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB));
5455 c->Request.CDBLen = cmd->cmd_len;
5456 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len);
5457 switch (cmd->sc_data_direction) {
5459 c->Request.type_attr_dir =
5460 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_WRITE);
5462 case DMA_FROM_DEVICE:
5463 c->Request.type_attr_dir =
5464 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_READ);
5467 c->Request.type_attr_dir =
5468 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_NONE);
5470 case DMA_BIDIRECTIONAL:
5471 /* This can happen if a buggy application does a scsi passthru
5472 * and sets both inlen and outlen to non-zero. ( see
5473 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
5476 c->Request.type_attr_dir =
5477 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_RSVD);
5478 /* This is technically wrong, and hpsa controllers should
5479 * reject it with CMD_INVALID, which is the most correct
5480 * response, but non-fibre backends appear to let it
5481 * slide by, and give the same results as if this field
5482 * were set correctly. Either way is acceptable for
5483 * our purposes here.
5489 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
5490 cmd->sc_data_direction);
5495 if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */
5496 hpsa_cmd_resolve_and_free(h, c);
5497 return SCSI_MLQUEUE_HOST_BUSY;
5500 if (dev->in_reset) {
5501 hpsa_cmd_resolve_and_free(h, c);
5502 return SCSI_MLQUEUE_HOST_BUSY;
5507 enqueue_cmd_and_start_io(h, c);
5508 /* the cmd'll come back via intr handler in complete_scsi_command() */
5512 static void hpsa_cmd_init(struct ctlr_info *h, int index,
5513 struct CommandList *c)
5515 dma_addr_t cmd_dma_handle, err_dma_handle;
5517 /* Zero out all of commandlist except the last field, refcount */
5518 memset(c, 0, offsetof(struct CommandList, refcount));
5519 c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT));
5520 cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
5521 c->err_info = h->errinfo_pool + index;
5522 memset(c->err_info, 0, sizeof(*c->err_info));
5523 err_dma_handle = h->errinfo_pool_dhandle
5524 + index * sizeof(*c->err_info);
5525 c->cmdindex = index;
5526 c->busaddr = (u32) cmd_dma_handle;
5527 c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle);
5528 c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info));
5530 c->scsi_cmd = SCSI_CMD_IDLE;
5533 static void hpsa_preinitialize_commands(struct ctlr_info *h)
5537 for (i = 0; i < h->nr_cmds; i++) {
5538 struct CommandList *c = h->cmd_pool + i;
5540 hpsa_cmd_init(h, i, c);
5541 atomic_set(&c->refcount, 0);
5545 static inline void hpsa_cmd_partial_init(struct ctlr_info *h, int index,
5546 struct CommandList *c)
5548 dma_addr_t cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
5550 BUG_ON(c->cmdindex != index);
5552 memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
5553 memset(c->err_info, 0, sizeof(*c->err_info));
5554 c->busaddr = (u32) cmd_dma_handle;
5557 static int hpsa_ioaccel_submit(struct ctlr_info *h,
5558 struct CommandList *c, struct scsi_cmnd *cmd)
5560 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
5561 int rc = IO_ACCEL_INELIGIBLE;
5564 return SCSI_MLQUEUE_HOST_BUSY;
5567 return SCSI_MLQUEUE_HOST_BUSY;
5569 if (hpsa_simple_mode)
5570 return IO_ACCEL_INELIGIBLE;
5572 cmd->host_scribble = (unsigned char *) c;
5574 if (dev->offload_enabled) {
5575 hpsa_cmd_init(h, c->cmdindex, c);
5576 c->cmd_type = CMD_SCSI;
5579 rc = hpsa_scsi_ioaccel_raid_map(h, c);
5580 if (rc < 0) /* scsi_dma_map failed. */
5581 rc = SCSI_MLQUEUE_HOST_BUSY;
5582 } else if (dev->hba_ioaccel_enabled) {
5583 hpsa_cmd_init(h, c->cmdindex, c);
5584 c->cmd_type = CMD_SCSI;
5587 rc = hpsa_scsi_ioaccel_direct_map(h, c);
5588 if (rc < 0) /* scsi_dma_map failed. */
5589 rc = SCSI_MLQUEUE_HOST_BUSY;
5594 static void hpsa_command_resubmit_worker(struct work_struct *work)
5596 struct scsi_cmnd *cmd;
5597 struct hpsa_scsi_dev_t *dev;
5598 struct CommandList *c = container_of(work, struct CommandList, work);
5601 dev = cmd->device->hostdata;
5603 cmd->result = DID_NO_CONNECT << 16;
5604 return hpsa_cmd_free_and_done(c->h, c, cmd);
5607 if (dev->in_reset) {
5608 cmd->result = DID_RESET << 16;
5609 return hpsa_cmd_free_and_done(c->h, c, cmd);
5612 if (c->cmd_type == CMD_IOACCEL2) {
5613 struct ctlr_info *h = c->h;
5614 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
5617 if (c2->error_data.serv_response ==
5618 IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL) {
5619 rc = hpsa_ioaccel_submit(h, c, cmd);
5622 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
5624 * If we get here, it means dma mapping failed.
5625 * Try again via scsi mid layer, which will
5626 * then get SCSI_MLQUEUE_HOST_BUSY.
5628 cmd->result = DID_IMM_RETRY << 16;
5629 return hpsa_cmd_free_and_done(h, c, cmd);
5631 /* else, fall thru and resubmit down CISS path */
5634 hpsa_cmd_partial_init(c->h, c->cmdindex, c);
5635 if (hpsa_ciss_submit(c->h, c, cmd, dev)) {
5637 * If we get here, it means dma mapping failed. Try
5638 * again via scsi mid layer, which will then get
5639 * SCSI_MLQUEUE_HOST_BUSY.
5641 * hpsa_ciss_submit will have already freed c
5642 * if it encountered a dma mapping failure.
5644 cmd->result = DID_IMM_RETRY << 16;
5645 cmd->scsi_done(cmd);
5649 /* Running in struct Scsi_Host->host_lock less mode */
5650 static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
5652 struct ctlr_info *h;
5653 struct hpsa_scsi_dev_t *dev;
5654 struct CommandList *c;
5657 /* Get the ptr to our adapter structure out of cmd->host. */
5658 h = sdev_to_hba(cmd->device);
5660 BUG_ON(cmd->request->tag < 0);
5662 dev = cmd->device->hostdata;
5664 cmd->result = DID_NO_CONNECT << 16;
5665 cmd->scsi_done(cmd);
5670 cmd->result = DID_NO_CONNECT << 16;
5671 cmd->scsi_done(cmd);
5675 if (unlikely(lockup_detected(h))) {
5676 cmd->result = DID_NO_CONNECT << 16;
5677 cmd->scsi_done(cmd);
5682 return SCSI_MLQUEUE_DEVICE_BUSY;
5684 c = cmd_tagged_alloc(h, cmd);
5686 return SCSI_MLQUEUE_DEVICE_BUSY;
5689 * This is necessary because the SML doesn't zero out this field during
5695 * Call alternate submit routine for I/O accelerated commands.
5696 * Retries always go down the normal I/O path.
5698 if (likely(cmd->retries == 0 &&
5699 !blk_rq_is_passthrough(cmd->request) &&
5700 h->acciopath_status)) {
5701 rc = hpsa_ioaccel_submit(h, c, cmd);
5704 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
5705 hpsa_cmd_resolve_and_free(h, c);
5706 return SCSI_MLQUEUE_HOST_BUSY;
5709 return hpsa_ciss_submit(h, c, cmd, dev);
5712 static void hpsa_scan_complete(struct ctlr_info *h)
5714 unsigned long flags;
5716 spin_lock_irqsave(&h->scan_lock, flags);
5717 h->scan_finished = 1;
5718 wake_up(&h->scan_wait_queue);
5719 spin_unlock_irqrestore(&h->scan_lock, flags);
5722 static void hpsa_scan_start(struct Scsi_Host *sh)
5724 struct ctlr_info *h = shost_to_hba(sh);
5725 unsigned long flags;
5728 * Don't let rescans be initiated on a controller known to be locked
5729 * up. If the controller locks up *during* a rescan, that thread is
5730 * probably hosed, but at least we can prevent new rescan threads from
5731 * piling up on a locked up controller.
5733 if (unlikely(lockup_detected(h)))
5734 return hpsa_scan_complete(h);
5737 * If a scan is already waiting to run, no need to add another
5739 spin_lock_irqsave(&h->scan_lock, flags);
5740 if (h->scan_waiting) {
5741 spin_unlock_irqrestore(&h->scan_lock, flags);
5745 spin_unlock_irqrestore(&h->scan_lock, flags);
5747 /* wait until any scan already in progress is finished. */
5749 spin_lock_irqsave(&h->scan_lock, flags);
5750 if (h->scan_finished)
5752 h->scan_waiting = 1;
5753 spin_unlock_irqrestore(&h->scan_lock, flags);
5754 wait_event(h->scan_wait_queue, h->scan_finished);
5755 /* Note: We don't need to worry about a race between this
5756 * thread and driver unload because the midlayer will
5757 * have incremented the reference count, so unload won't
5758 * happen if we're in here.
5761 h->scan_finished = 0; /* mark scan as in progress */
5762 h->scan_waiting = 0;
5763 spin_unlock_irqrestore(&h->scan_lock, flags);
5765 if (unlikely(lockup_detected(h)))
5766 return hpsa_scan_complete(h);
5769 * Do the scan after a reset completion
5771 spin_lock_irqsave(&h->reset_lock, flags);
5772 if (h->reset_in_progress) {
5773 h->drv_req_rescan = 1;
5774 spin_unlock_irqrestore(&h->reset_lock, flags);
5775 hpsa_scan_complete(h);
5778 spin_unlock_irqrestore(&h->reset_lock, flags);
5780 hpsa_update_scsi_devices(h);
5782 hpsa_scan_complete(h);
5785 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth)
5787 struct hpsa_scsi_dev_t *logical_drive = sdev->hostdata;
5794 else if (qdepth > logical_drive->queue_depth)
5795 qdepth = logical_drive->queue_depth;
5797 return scsi_change_queue_depth(sdev, qdepth);
5800 static int hpsa_scan_finished(struct Scsi_Host *sh,
5801 unsigned long elapsed_time)
5803 struct ctlr_info *h = shost_to_hba(sh);
5804 unsigned long flags;
5807 spin_lock_irqsave(&h->scan_lock, flags);
5808 finished = h->scan_finished;
5809 spin_unlock_irqrestore(&h->scan_lock, flags);
5813 static int hpsa_scsi_host_alloc(struct ctlr_info *h)
5815 struct Scsi_Host *sh;
5817 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h));
5819 dev_err(&h->pdev->dev, "scsi_host_alloc failed\n");
5826 sh->max_channel = 3;
5827 sh->max_cmd_len = MAX_COMMAND_SIZE;
5828 sh->max_lun = HPSA_MAX_LUN;
5829 sh->max_id = HPSA_MAX_LUN;
5830 sh->can_queue = h->nr_cmds - HPSA_NRESERVED_CMDS;
5831 sh->cmd_per_lun = sh->can_queue;
5832 sh->sg_tablesize = h->maxsgentries;
5833 sh->transportt = hpsa_sas_transport_template;
5834 sh->hostdata[0] = (unsigned long) h;
5835 sh->irq = pci_irq_vector(h->pdev, 0);
5836 sh->unique_id = sh->irq;
5842 static int hpsa_scsi_add_host(struct ctlr_info *h)
5846 rv = scsi_add_host(h->scsi_host, &h->pdev->dev);
5848 dev_err(&h->pdev->dev, "scsi_add_host failed\n");
5851 scsi_scan_host(h->scsi_host);
5856 * The block layer has already gone to the trouble of picking out a unique,
5857 * small-integer tag for this request. We use an offset from that value as
5858 * an index to select our command block. (The offset allows us to reserve the
5859 * low-numbered entries for our own uses.)
5861 static int hpsa_get_cmd_index(struct scsi_cmnd *scmd)
5863 int idx = scmd->request->tag;
5868 /* Offset to leave space for internal cmds. */
5869 return idx += HPSA_NRESERVED_CMDS;
5873 * Send a TEST_UNIT_READY command to the specified LUN using the specified
5874 * reply queue; returns zero if the unit is ready, and non-zero otherwise.
5876 static int hpsa_send_test_unit_ready(struct ctlr_info *h,
5877 struct CommandList *c, unsigned char lunaddr[],
5882 /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */
5883 (void) fill_cmd(c, TEST_UNIT_READY, h,
5884 NULL, 0, 0, lunaddr, TYPE_CMD);
5885 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
5888 /* no unmap needed here because no data xfer. */
5890 /* Check if the unit is already ready. */
5891 if (c->err_info->CommandStatus == CMD_SUCCESS)
5895 * The first command sent after reset will receive "unit attention" to
5896 * indicate that the LUN has been reset...this is actually what we're
5897 * looking for (but, success is good too).
5899 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
5900 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
5901 (c->err_info->SenseInfo[2] == NO_SENSE ||
5902 c->err_info->SenseInfo[2] == UNIT_ATTENTION))
5909 * Wait for a TEST_UNIT_READY command to complete, retrying as necessary;
5910 * returns zero when the unit is ready, and non-zero when giving up.
5912 static int hpsa_wait_for_test_unit_ready(struct ctlr_info *h,
5913 struct CommandList *c,
5914 unsigned char lunaddr[], int reply_queue)
5918 int waittime = 1; /* seconds */
5920 /* Send test unit ready until device ready, or give up. */
5921 for (count = 0; count < HPSA_TUR_RETRY_LIMIT; count++) {
5924 * Wait for a bit. do this first, because if we send
5925 * the TUR right away, the reset will just abort it.
5927 msleep(1000 * waittime);
5929 rc = hpsa_send_test_unit_ready(h, c, lunaddr, reply_queue);
5933 /* Increase wait time with each try, up to a point. */
5934 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS)
5937 dev_warn(&h->pdev->dev,
5938 "waiting %d secs for device to become ready.\n",
5945 static int wait_for_device_to_become_ready(struct ctlr_info *h,
5946 unsigned char lunaddr[],
5953 struct CommandList *c;
5958 * If no specific reply queue was requested, then send the TUR
5959 * repeatedly, requesting a reply on each reply queue; otherwise execute
5960 * the loop exactly once using only the specified queue.
5962 if (reply_queue == DEFAULT_REPLY_QUEUE) {
5964 last_queue = h->nreply_queues - 1;
5966 first_queue = reply_queue;
5967 last_queue = reply_queue;
5970 for (rq = first_queue; rq <= last_queue; rq++) {
5971 rc = hpsa_wait_for_test_unit_ready(h, c, lunaddr, rq);
5977 dev_warn(&h->pdev->dev, "giving up on device.\n");
5979 dev_warn(&h->pdev->dev, "device is ready.\n");
5985 /* Need at least one of these error handlers to keep ../scsi/hosts.c from
5986 * complaining. Doing a host- or bus-reset can't do anything good here.
5988 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
5992 struct ctlr_info *h;
5993 struct hpsa_scsi_dev_t *dev = NULL;
5996 unsigned long flags;
5998 /* find the controller to which the command to be aborted was sent */
5999 h = sdev_to_hba(scsicmd->device);
6000 if (h == NULL) /* paranoia */
6003 spin_lock_irqsave(&h->reset_lock, flags);
6004 h->reset_in_progress = 1;
6005 spin_unlock_irqrestore(&h->reset_lock, flags);
6007 if (lockup_detected(h)) {
6009 goto return_reset_status;
6012 dev = scsicmd->device->hostdata;
6014 dev_err(&h->pdev->dev, "%s: device lookup failed\n", __func__);
6016 goto return_reset_status;
6019 if (dev->devtype == TYPE_ENCLOSURE) {
6021 goto return_reset_status;
6024 /* if controller locked up, we can guarantee command won't complete */
6025 if (lockup_detected(h)) {
6026 snprintf(msg, sizeof(msg),
6027 "cmd %d RESET FAILED, lockup detected",
6028 hpsa_get_cmd_index(scsicmd));
6029 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
6031 goto return_reset_status;
6034 /* this reset request might be the result of a lockup; check */
6035 if (detect_controller_lockup(h)) {
6036 snprintf(msg, sizeof(msg),
6037 "cmd %d RESET FAILED, new lockup detected",
6038 hpsa_get_cmd_index(scsicmd));
6039 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
6041 goto return_reset_status;
6044 /* Do not attempt on controller */
6045 if (is_hba_lunid(dev->scsi3addr)) {
6047 goto return_reset_status;
6050 if (is_logical_dev_addr_mode(dev->scsi3addr))
6051 reset_type = HPSA_DEVICE_RESET_MSG;
6053 reset_type = HPSA_PHYS_TARGET_RESET;
6055 sprintf(msg, "resetting %s",
6056 reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ");
6057 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
6060 * wait to see if any commands will complete before sending reset
6062 dev->in_reset = true; /* block any new cmds from OS for this device */
6063 for (i = 0; i < 10; i++) {
6064 if (atomic_read(&dev->commands_outstanding) > 0)
6070 /* send a reset to the SCSI LUN which the command was sent to */
6071 rc = hpsa_do_reset(h, dev, reset_type, DEFAULT_REPLY_QUEUE);
6077 sprintf(msg, "reset %s %s",
6078 reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ",
6079 rc == SUCCESS ? "completed successfully" : "failed");
6080 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
6082 return_reset_status:
6083 spin_lock_irqsave(&h->reset_lock, flags);
6084 h->reset_in_progress = 0;
6086 dev->in_reset = false;
6087 spin_unlock_irqrestore(&h->reset_lock, flags);
6092 * For operations with an associated SCSI command, a command block is allocated
6093 * at init, and managed by cmd_tagged_alloc() and cmd_tagged_free() using the
6094 * block request tag as an index into a table of entries. cmd_tagged_free() is
6095 * the complement, although cmd_free() may be called instead.
6097 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
6098 struct scsi_cmnd *scmd)
6100 int idx = hpsa_get_cmd_index(scmd);
6101 struct CommandList *c = h->cmd_pool + idx;
6103 if (idx < HPSA_NRESERVED_CMDS || idx >= h->nr_cmds) {
6104 dev_err(&h->pdev->dev, "Bad block tag: %d not in [%d..%d]\n",
6105 idx, HPSA_NRESERVED_CMDS, h->nr_cmds - 1);
6106 /* The index value comes from the block layer, so if it's out of
6107 * bounds, it's probably not our bug.
6112 if (unlikely(!hpsa_is_cmd_idle(c))) {
6114 * We expect that the SCSI layer will hand us a unique tag
6115 * value. Thus, there should never be a collision here between
6116 * two requests...because if the selected command isn't idle
6117 * then someone is going to be very disappointed.
6119 if (idx != h->last_collision_tag) { /* Print once per tag */
6120 dev_warn(&h->pdev->dev,
6121 "%s: tag collision (tag=%d)\n", __func__, idx);
6123 scsi_print_command(scmd);
6124 h->last_collision_tag = idx;
6129 atomic_inc(&c->refcount);
6131 hpsa_cmd_partial_init(h, idx, c);
6135 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c)
6138 * Release our reference to the block. We don't need to do anything
6139 * else to free it, because it is accessed by index.
6141 (void)atomic_dec(&c->refcount);
6145 * For operations that cannot sleep, a command block is allocated at init,
6146 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
6147 * which ones are free or in use. Lock must be held when calling this.
6148 * cmd_free() is the complement.
6149 * This function never gives up and returns NULL. If it hangs,
6150 * another thread must call cmd_free() to free some tags.
6153 static struct CommandList *cmd_alloc(struct ctlr_info *h)
6155 struct CommandList *c;
6160 * There is some *extremely* small but non-zero chance that that
6161 * multiple threads could get in here, and one thread could
6162 * be scanning through the list of bits looking for a free
6163 * one, but the free ones are always behind him, and other
6164 * threads sneak in behind him and eat them before he can
6165 * get to them, so that while there is always a free one, a
6166 * very unlucky thread might be starved anyway, never able to
6167 * beat the other threads. In reality, this happens so
6168 * infrequently as to be indistinguishable from never.
6170 * Note that we start allocating commands before the SCSI host structure
6171 * is initialized. Since the search starts at bit zero, this
6172 * all works, since we have at least one command structure available;
6173 * however, it means that the structures with the low indexes have to be
6174 * reserved for driver-initiated requests, while requests from the block
6175 * layer will use the higher indexes.
6179 i = find_next_zero_bit(h->cmd_pool_bits,
6180 HPSA_NRESERVED_CMDS,
6182 if (unlikely(i >= HPSA_NRESERVED_CMDS)) {
6186 c = h->cmd_pool + i;
6187 refcount = atomic_inc_return(&c->refcount);
6188 if (unlikely(refcount > 1)) {
6189 cmd_free(h, c); /* already in use */
6190 offset = (i + 1) % HPSA_NRESERVED_CMDS;
6193 set_bit(i & (BITS_PER_LONG - 1),
6194 h->cmd_pool_bits + (i / BITS_PER_LONG));
6195 break; /* it's ours now. */
6197 hpsa_cmd_partial_init(h, i, c);
6203 * This is the complementary operation to cmd_alloc(). Note, however, in some
6204 * corner cases it may also be used to free blocks allocated by
6205 * cmd_tagged_alloc() in which case the ref-count decrement does the trick and
6206 * the clear-bit is harmless.
6208 static void cmd_free(struct ctlr_info *h, struct CommandList *c)
6210 if (atomic_dec_and_test(&c->refcount)) {
6213 i = c - h->cmd_pool;
6214 clear_bit(i & (BITS_PER_LONG - 1),
6215 h->cmd_pool_bits + (i / BITS_PER_LONG));
6219 #ifdef CONFIG_COMPAT
6221 static int hpsa_ioctl32_passthru(struct scsi_device *dev, unsigned int cmd,
6224 struct ctlr_info *h = sdev_to_hba(dev);
6225 IOCTL32_Command_struct __user *arg32 = arg;
6226 IOCTL_Command_struct arg64;
6233 memset(&arg64, 0, sizeof(arg64));
6234 if (copy_from_user(&arg64, arg32, offsetof(IOCTL_Command_struct, buf)))
6236 if (get_user(cp, &arg32->buf))
6238 arg64.buf = compat_ptr(cp);
6240 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6242 err = hpsa_passthru_ioctl(h, &arg64);
6243 atomic_inc(&h->passthru_cmds_avail);
6246 if (copy_to_user(&arg32->error_info, &arg64.error_info,
6247 sizeof(arg32->error_info)))
6252 static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
6253 unsigned int cmd, void __user *arg)
6255 struct ctlr_info *h = sdev_to_hba(dev);
6256 BIG_IOCTL32_Command_struct __user *arg32 = arg;
6257 BIG_IOCTL_Command_struct arg64;
6263 memset(&arg64, 0, sizeof(arg64));
6264 if (copy_from_user(&arg64, arg32,
6265 offsetof(BIG_IOCTL32_Command_struct, buf)))
6267 if (get_user(cp, &arg32->buf))
6269 arg64.buf = compat_ptr(cp);
6271 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6273 err = hpsa_big_passthru_ioctl(h, &arg64);
6274 atomic_inc(&h->passthru_cmds_avail);
6277 if (copy_to_user(&arg32->error_info, &arg64.error_info,
6278 sizeof(arg32->error_info)))
6283 static int hpsa_compat_ioctl(struct scsi_device *dev, unsigned int cmd,
6287 case CCISS_GETPCIINFO:
6288 case CCISS_GETINTINFO:
6289 case CCISS_SETINTINFO:
6290 case CCISS_GETNODENAME:
6291 case CCISS_SETNODENAME:
6292 case CCISS_GETHEARTBEAT:
6293 case CCISS_GETBUSTYPES:
6294 case CCISS_GETFIRMVER:
6295 case CCISS_GETDRIVVER:
6296 case CCISS_REVALIDVOLS:
6297 case CCISS_DEREGDISK:
6298 case CCISS_REGNEWDISK:
6300 case CCISS_RESCANDISK:
6301 case CCISS_GETLUNINFO:
6302 return hpsa_ioctl(dev, cmd, arg);
6304 case CCISS_PASSTHRU32:
6305 return hpsa_ioctl32_passthru(dev, cmd, arg);
6306 case CCISS_BIG_PASSTHRU32:
6307 return hpsa_ioctl32_big_passthru(dev, cmd, arg);
6310 return -ENOIOCTLCMD;
6315 static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp)
6317 struct hpsa_pci_info pciinfo;
6321 pciinfo.domain = pci_domain_nr(h->pdev->bus);
6322 pciinfo.bus = h->pdev->bus->number;
6323 pciinfo.dev_fn = h->pdev->devfn;
6324 pciinfo.board_id = h->board_id;
6325 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo)))
6330 static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp)
6332 DriverVer_type DriverVer;
6333 unsigned char vmaj, vmin, vsubmin;
6336 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu",
6337 &vmaj, &vmin, &vsubmin);
6339 dev_info(&h->pdev->dev, "driver version string '%s' "
6340 "unrecognized.", HPSA_DRIVER_VERSION);
6345 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin;
6348 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type)))
6353 static int hpsa_passthru_ioctl(struct ctlr_info *h,
6354 IOCTL_Command_struct *iocommand)
6356 struct CommandList *c;
6361 if (!capable(CAP_SYS_RAWIO))
6363 if ((iocommand->buf_size < 1) &&
6364 (iocommand->Request.Type.Direction != XFER_NONE)) {
6367 if (iocommand->buf_size > 0) {
6368 buff = kmalloc(iocommand->buf_size, GFP_KERNEL);
6371 if (iocommand->Request.Type.Direction & XFER_WRITE) {
6372 /* Copy the data into the buffer we created */
6373 if (copy_from_user(buff, iocommand->buf,
6374 iocommand->buf_size)) {
6379 memset(buff, 0, iocommand->buf_size);
6384 /* Fill in the command type */
6385 c->cmd_type = CMD_IOCTL_PEND;
6386 c->scsi_cmd = SCSI_CMD_BUSY;
6387 /* Fill in Command Header */
6388 c->Header.ReplyQueue = 0; /* unused in simple mode */
6389 if (iocommand->buf_size > 0) { /* buffer to fill */
6390 c->Header.SGList = 1;
6391 c->Header.SGTotal = cpu_to_le16(1);
6392 } else { /* no buffers to fill */
6393 c->Header.SGList = 0;
6394 c->Header.SGTotal = cpu_to_le16(0);
6396 memcpy(&c->Header.LUN, &iocommand->LUN_info, sizeof(c->Header.LUN));
6398 /* Fill in Request block */
6399 memcpy(&c->Request, &iocommand->Request,
6400 sizeof(c->Request));
6402 /* Fill in the scatter gather information */
6403 if (iocommand->buf_size > 0) {
6404 temp64 = dma_map_single(&h->pdev->dev, buff,
6405 iocommand->buf_size, DMA_BIDIRECTIONAL);
6406 if (dma_mapping_error(&h->pdev->dev, (dma_addr_t) temp64)) {
6407 c->SG[0].Addr = cpu_to_le64(0);
6408 c->SG[0].Len = cpu_to_le32(0);
6412 c->SG[0].Addr = cpu_to_le64(temp64);
6413 c->SG[0].Len = cpu_to_le32(iocommand->buf_size);
6414 c->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* not chaining */
6416 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
6418 if (iocommand->buf_size > 0)
6419 hpsa_pci_unmap(h->pdev, c, 1, DMA_BIDIRECTIONAL);
6420 check_ioctl_unit_attention(h, c);
6426 /* Copy the error information out */
6427 memcpy(&iocommand->error_info, c->err_info,
6428 sizeof(iocommand->error_info));
6429 if ((iocommand->Request.Type.Direction & XFER_READ) &&
6430 iocommand->buf_size > 0) {
6431 /* Copy the data out of the buffer we created */
6432 if (copy_to_user(iocommand->buf, buff, iocommand->buf_size)) {
6444 static int hpsa_big_passthru_ioctl(struct ctlr_info *h,
6445 BIG_IOCTL_Command_struct *ioc)
6447 struct CommandList *c;
6448 unsigned char **buff = NULL;
6449 int *buff_size = NULL;
6455 BYTE __user *data_ptr;
6457 if (!capable(CAP_SYS_RAWIO))
6460 if ((ioc->buf_size < 1) &&
6461 (ioc->Request.Type.Direction != XFER_NONE))
6463 /* Check kmalloc limits using all SGs */
6464 if (ioc->malloc_size > MAX_KMALLOC_SIZE)
6466 if (ioc->buf_size > ioc->malloc_size * SG_ENTRIES_IN_CMD)
6468 buff = kcalloc(SG_ENTRIES_IN_CMD, sizeof(char *), GFP_KERNEL);
6473 buff_size = kmalloc_array(SG_ENTRIES_IN_CMD, sizeof(int), GFP_KERNEL);
6478 left = ioc->buf_size;
6479 data_ptr = ioc->buf;
6481 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
6482 buff_size[sg_used] = sz;
6483 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
6484 if (buff[sg_used] == NULL) {
6488 if (ioc->Request.Type.Direction & XFER_WRITE) {
6489 if (copy_from_user(buff[sg_used], data_ptr, sz)) {
6494 memset(buff[sg_used], 0, sz);
6501 c->cmd_type = CMD_IOCTL_PEND;
6502 c->scsi_cmd = SCSI_CMD_BUSY;
6503 c->Header.ReplyQueue = 0;
6504 c->Header.SGList = (u8) sg_used;
6505 c->Header.SGTotal = cpu_to_le16(sg_used);
6506 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN));
6507 memcpy(&c->Request, &ioc->Request, sizeof(c->Request));
6508 if (ioc->buf_size > 0) {
6510 for (i = 0; i < sg_used; i++) {
6511 temp64 = dma_map_single(&h->pdev->dev, buff[i],
6512 buff_size[i], DMA_BIDIRECTIONAL);
6513 if (dma_mapping_error(&h->pdev->dev,
6514 (dma_addr_t) temp64)) {
6515 c->SG[i].Addr = cpu_to_le64(0);
6516 c->SG[i].Len = cpu_to_le32(0);
6517 hpsa_pci_unmap(h->pdev, c, i,
6522 c->SG[i].Addr = cpu_to_le64(temp64);
6523 c->SG[i].Len = cpu_to_le32(buff_size[i]);
6524 c->SG[i].Ext = cpu_to_le32(0);
6526 c->SG[--i].Ext = cpu_to_le32(HPSA_SG_LAST);
6528 status = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
6531 hpsa_pci_unmap(h->pdev, c, sg_used, DMA_BIDIRECTIONAL);
6532 check_ioctl_unit_attention(h, c);
6538 /* Copy the error information out */
6539 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info));
6540 if ((ioc->Request.Type.Direction & XFER_READ) && ioc->buf_size > 0) {
6543 /* Copy the data out of the buffer we created */
6544 BYTE __user *ptr = ioc->buf;
6545 for (i = 0; i < sg_used; i++) {
6546 if (copy_to_user(ptr, buff[i], buff_size[i])) {
6550 ptr += buff_size[i];
6560 for (i = 0; i < sg_used; i++)
6568 static void check_ioctl_unit_attention(struct ctlr_info *h,
6569 struct CommandList *c)
6571 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
6572 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
6573 (void) check_for_unit_attention(h, c);
6579 static int hpsa_ioctl(struct scsi_device *dev, unsigned int cmd,
6582 struct ctlr_info *h = sdev_to_hba(dev);
6586 case CCISS_DEREGDISK:
6587 case CCISS_REGNEWDISK:
6589 hpsa_scan_start(h->scsi_host);
6591 case CCISS_GETPCIINFO:
6592 return hpsa_getpciinfo_ioctl(h, argp);
6593 case CCISS_GETDRIVVER:
6594 return hpsa_getdrivver_ioctl(h, argp);
6595 case CCISS_PASSTHRU: {
6596 IOCTL_Command_struct iocommand;
6600 if (copy_from_user(&iocommand, argp, sizeof(iocommand)))
6602 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6604 rc = hpsa_passthru_ioctl(h, &iocommand);
6605 atomic_inc(&h->passthru_cmds_avail);
6606 if (!rc && copy_to_user(argp, &iocommand, sizeof(iocommand)))
6610 case CCISS_BIG_PASSTHRU: {
6611 BIG_IOCTL_Command_struct ioc;
6614 if (copy_from_user(&ioc, argp, sizeof(ioc)))
6616 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6618 rc = hpsa_big_passthru_ioctl(h, &ioc);
6619 atomic_inc(&h->passthru_cmds_avail);
6620 if (!rc && copy_to_user(argp, &ioc, sizeof(ioc)))
6629 static void hpsa_send_host_reset(struct ctlr_info *h, u8 reset_type)
6631 struct CommandList *c;
6635 /* fill_cmd can't fail here, no data buffer to map */
6636 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0,
6637 RAID_CTLR_LUNID, TYPE_MSG);
6638 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */
6640 enqueue_cmd_and_start_io(h, c);
6641 /* Don't wait for completion, the reset won't complete. Don't free
6642 * the command either. This is the last command we will send before
6643 * re-initializing everything, so it doesn't matter and won't leak.
6648 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
6649 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
6652 enum dma_data_direction dir = DMA_NONE;
6654 c->cmd_type = CMD_IOCTL_PEND;
6655 c->scsi_cmd = SCSI_CMD_BUSY;
6656 c->Header.ReplyQueue = 0;
6657 if (buff != NULL && size > 0) {
6658 c->Header.SGList = 1;
6659 c->Header.SGTotal = cpu_to_le16(1);
6661 c->Header.SGList = 0;
6662 c->Header.SGTotal = cpu_to_le16(0);
6664 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
6666 if (cmd_type == TYPE_CMD) {
6669 /* are we trying to read a vital product page */
6670 if (page_code & VPD_PAGE) {
6671 c->Request.CDB[1] = 0x01;
6672 c->Request.CDB[2] = (page_code & 0xff);
6674 c->Request.CDBLen = 6;
6675 c->Request.type_attr_dir =
6676 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6677 c->Request.Timeout = 0;
6678 c->Request.CDB[0] = HPSA_INQUIRY;
6679 c->Request.CDB[4] = size & 0xFF;
6681 case RECEIVE_DIAGNOSTIC:
6682 c->Request.CDBLen = 6;
6683 c->Request.type_attr_dir =
6684 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6685 c->Request.Timeout = 0;
6686 c->Request.CDB[0] = cmd;
6687 c->Request.CDB[1] = 1;
6688 c->Request.CDB[2] = 1;
6689 c->Request.CDB[3] = (size >> 8) & 0xFF;
6690 c->Request.CDB[4] = size & 0xFF;
6692 case HPSA_REPORT_LOG:
6693 case HPSA_REPORT_PHYS:
6694 /* Talking to controller so It's a physical command
6695 mode = 00 target = 0. Nothing to write.
6697 c->Request.CDBLen = 12;
6698 c->Request.type_attr_dir =
6699 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6700 c->Request.Timeout = 0;
6701 c->Request.CDB[0] = cmd;
6702 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6703 c->Request.CDB[7] = (size >> 16) & 0xFF;
6704 c->Request.CDB[8] = (size >> 8) & 0xFF;
6705 c->Request.CDB[9] = size & 0xFF;
6707 case BMIC_SENSE_DIAG_OPTIONS:
6708 c->Request.CDBLen = 16;
6709 c->Request.type_attr_dir =
6710 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6711 c->Request.Timeout = 0;
6712 /* Spec says this should be BMIC_WRITE */
6713 c->Request.CDB[0] = BMIC_READ;
6714 c->Request.CDB[6] = BMIC_SENSE_DIAG_OPTIONS;
6716 case BMIC_SET_DIAG_OPTIONS:
6717 c->Request.CDBLen = 16;
6718 c->Request.type_attr_dir =
6719 TYPE_ATTR_DIR(cmd_type,
6720 ATTR_SIMPLE, XFER_WRITE);
6721 c->Request.Timeout = 0;
6722 c->Request.CDB[0] = BMIC_WRITE;
6723 c->Request.CDB[6] = BMIC_SET_DIAG_OPTIONS;
6725 case HPSA_CACHE_FLUSH:
6726 c->Request.CDBLen = 12;
6727 c->Request.type_attr_dir =
6728 TYPE_ATTR_DIR(cmd_type,
6729 ATTR_SIMPLE, XFER_WRITE);
6730 c->Request.Timeout = 0;
6731 c->Request.CDB[0] = BMIC_WRITE;
6732 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
6733 c->Request.CDB[7] = (size >> 8) & 0xFF;
6734 c->Request.CDB[8] = size & 0xFF;
6736 case TEST_UNIT_READY:
6737 c->Request.CDBLen = 6;
6738 c->Request.type_attr_dir =
6739 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6740 c->Request.Timeout = 0;
6742 case HPSA_GET_RAID_MAP:
6743 c->Request.CDBLen = 12;
6744 c->Request.type_attr_dir =
6745 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6746 c->Request.Timeout = 0;
6747 c->Request.CDB[0] = HPSA_CISS_READ;
6748 c->Request.CDB[1] = cmd;
6749 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6750 c->Request.CDB[7] = (size >> 16) & 0xFF;
6751 c->Request.CDB[8] = (size >> 8) & 0xFF;
6752 c->Request.CDB[9] = size & 0xFF;
6754 case BMIC_SENSE_CONTROLLER_PARAMETERS:
6755 c->Request.CDBLen = 10;
6756 c->Request.type_attr_dir =
6757 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6758 c->Request.Timeout = 0;
6759 c->Request.CDB[0] = BMIC_READ;
6760 c->Request.CDB[6] = BMIC_SENSE_CONTROLLER_PARAMETERS;
6761 c->Request.CDB[7] = (size >> 16) & 0xFF;
6762 c->Request.CDB[8] = (size >> 8) & 0xFF;
6764 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
6765 c->Request.CDBLen = 10;
6766 c->Request.type_attr_dir =
6767 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6768 c->Request.Timeout = 0;
6769 c->Request.CDB[0] = BMIC_READ;
6770 c->Request.CDB[6] = BMIC_IDENTIFY_PHYSICAL_DEVICE;
6771 c->Request.CDB[7] = (size >> 16) & 0xFF;
6772 c->Request.CDB[8] = (size >> 8) & 0XFF;
6774 case BMIC_SENSE_SUBSYSTEM_INFORMATION:
6775 c->Request.CDBLen = 10;
6776 c->Request.type_attr_dir =
6777 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6778 c->Request.Timeout = 0;
6779 c->Request.CDB[0] = BMIC_READ;
6780 c->Request.CDB[6] = BMIC_SENSE_SUBSYSTEM_INFORMATION;
6781 c->Request.CDB[7] = (size >> 16) & 0xFF;
6782 c->Request.CDB[8] = (size >> 8) & 0XFF;
6784 case BMIC_SENSE_STORAGE_BOX_PARAMS:
6785 c->Request.CDBLen = 10;
6786 c->Request.type_attr_dir =
6787 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6788 c->Request.Timeout = 0;
6789 c->Request.CDB[0] = BMIC_READ;
6790 c->Request.CDB[6] = BMIC_SENSE_STORAGE_BOX_PARAMS;
6791 c->Request.CDB[7] = (size >> 16) & 0xFF;
6792 c->Request.CDB[8] = (size >> 8) & 0XFF;
6794 case BMIC_IDENTIFY_CONTROLLER:
6795 c->Request.CDBLen = 10;
6796 c->Request.type_attr_dir =
6797 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6798 c->Request.Timeout = 0;
6799 c->Request.CDB[0] = BMIC_READ;
6800 c->Request.CDB[1] = 0;
6801 c->Request.CDB[2] = 0;
6802 c->Request.CDB[3] = 0;
6803 c->Request.CDB[4] = 0;
6804 c->Request.CDB[5] = 0;
6805 c->Request.CDB[6] = BMIC_IDENTIFY_CONTROLLER;
6806 c->Request.CDB[7] = (size >> 16) & 0xFF;
6807 c->Request.CDB[8] = (size >> 8) & 0XFF;
6808 c->Request.CDB[9] = 0;
6811 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd);
6814 } else if (cmd_type == TYPE_MSG) {
6817 case HPSA_PHYS_TARGET_RESET:
6818 c->Request.CDBLen = 16;
6819 c->Request.type_attr_dir =
6820 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6821 c->Request.Timeout = 0; /* Don't time out */
6822 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
6823 c->Request.CDB[0] = HPSA_RESET;
6824 c->Request.CDB[1] = HPSA_TARGET_RESET_TYPE;
6825 /* Physical target reset needs no control bytes 4-7*/
6826 c->Request.CDB[4] = 0x00;
6827 c->Request.CDB[5] = 0x00;
6828 c->Request.CDB[6] = 0x00;
6829 c->Request.CDB[7] = 0x00;
6831 case HPSA_DEVICE_RESET_MSG:
6832 c->Request.CDBLen = 16;
6833 c->Request.type_attr_dir =
6834 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6835 c->Request.Timeout = 0; /* Don't time out */
6836 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
6837 c->Request.CDB[0] = cmd;
6838 c->Request.CDB[1] = HPSA_RESET_TYPE_LUN;
6839 /* If bytes 4-7 are zero, it means reset the */
6841 c->Request.CDB[4] = 0x00;
6842 c->Request.CDB[5] = 0x00;
6843 c->Request.CDB[6] = 0x00;
6844 c->Request.CDB[7] = 0x00;
6847 dev_warn(&h->pdev->dev, "unknown message type %d\n",
6852 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type);
6856 switch (GET_DIR(c->Request.type_attr_dir)) {
6858 dir = DMA_FROM_DEVICE;
6861 dir = DMA_TO_DEVICE;
6867 dir = DMA_BIDIRECTIONAL;
6869 if (hpsa_map_one(h->pdev, c, buff, size, dir))
6875 * Map (physical) PCI mem into (virtual) kernel space
6877 static void __iomem *remap_pci_mem(ulong base, ulong size)
6879 ulong page_base = ((ulong) base) & PAGE_MASK;
6880 ulong page_offs = ((ulong) base) - page_base;
6881 void __iomem *page_remapped = ioremap(page_base,
6884 return page_remapped ? (page_remapped + page_offs) : NULL;
6887 static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q)
6889 return h->access.command_completed(h, q);
6892 static inline bool interrupt_pending(struct ctlr_info *h)
6894 return h->access.intr_pending(h);
6897 static inline long interrupt_not_for_us(struct ctlr_info *h)
6899 return (h->access.intr_pending(h) == 0) ||
6900 (h->interrupts_enabled == 0);
6903 static inline int bad_tag(struct ctlr_info *h, u32 tag_index,
6906 if (unlikely(tag_index >= h->nr_cmds)) {
6907 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag);
6913 static inline void finish_cmd(struct CommandList *c)
6915 dial_up_lockup_detection_on_fw_flash_complete(c->h, c);
6916 if (likely(c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_SCSI
6917 || c->cmd_type == CMD_IOACCEL2))
6918 complete_scsi_command(c);
6919 else if (c->cmd_type == CMD_IOCTL_PEND || c->cmd_type == IOACCEL2_TMF)
6920 complete(c->waiting);
6923 /* process completion of an indexed ("direct lookup") command */
6924 static inline void process_indexed_cmd(struct ctlr_info *h,
6928 struct CommandList *c;
6930 tag_index = raw_tag >> DIRECT_LOOKUP_SHIFT;
6931 if (!bad_tag(h, tag_index, raw_tag)) {
6932 c = h->cmd_pool + tag_index;
6937 /* Some controllers, like p400, will give us one interrupt
6938 * after a soft reset, even if we turned interrupts off.
6939 * Only need to check for this in the hpsa_xxx_discard_completions
6942 static int ignore_bogus_interrupt(struct ctlr_info *h)
6944 if (likely(!reset_devices))
6947 if (likely(h->interrupts_enabled))
6950 dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled "
6951 "(known firmware bug.) Ignoring.\n");
6957 * Convert &h->q[x] (passed to interrupt handlers) back to h.
6958 * Relies on (h-q[x] == x) being true for x such that
6959 * 0 <= x < MAX_REPLY_QUEUES.
6961 static struct ctlr_info *queue_to_hba(u8 *queue)
6963 return container_of((queue - *queue), struct ctlr_info, q[0]);
6966 static irqreturn_t hpsa_intx_discard_completions(int irq, void *queue)
6968 struct ctlr_info *h = queue_to_hba(queue);
6969 u8 q = *(u8 *) queue;
6972 if (ignore_bogus_interrupt(h))
6975 if (interrupt_not_for_us(h))
6977 h->last_intr_timestamp = get_jiffies_64();
6978 while (interrupt_pending(h)) {
6979 raw_tag = get_next_completion(h, q);
6980 while (raw_tag != FIFO_EMPTY)
6981 raw_tag = next_command(h, q);
6986 static irqreturn_t hpsa_msix_discard_completions(int irq, void *queue)
6988 struct ctlr_info *h = queue_to_hba(queue);
6990 u8 q = *(u8 *) queue;
6992 if (ignore_bogus_interrupt(h))
6995 h->last_intr_timestamp = get_jiffies_64();
6996 raw_tag = get_next_completion(h, q);
6997 while (raw_tag != FIFO_EMPTY)
6998 raw_tag = next_command(h, q);
7002 static irqreturn_t do_hpsa_intr_intx(int irq, void *queue)
7004 struct ctlr_info *h = queue_to_hba((u8 *) queue);
7006 u8 q = *(u8 *) queue;
7008 if (interrupt_not_for_us(h))
7010 h->last_intr_timestamp = get_jiffies_64();
7011 while (interrupt_pending(h)) {
7012 raw_tag = get_next_completion(h, q);
7013 while (raw_tag != FIFO_EMPTY) {
7014 process_indexed_cmd(h, raw_tag);
7015 raw_tag = next_command(h, q);
7021 static irqreturn_t do_hpsa_intr_msi(int irq, void *queue)
7023 struct ctlr_info *h = queue_to_hba(queue);
7025 u8 q = *(u8 *) queue;
7027 h->last_intr_timestamp = get_jiffies_64();
7028 raw_tag = get_next_completion(h, q);
7029 while (raw_tag != FIFO_EMPTY) {
7030 process_indexed_cmd(h, raw_tag);
7031 raw_tag = next_command(h, q);
7036 /* Send a message CDB to the firmware. Careful, this only works
7037 * in simple mode, not performant mode due to the tag lookup.
7038 * We only ever use this immediately after a controller reset.
7040 static int hpsa_message(struct pci_dev *pdev, unsigned char opcode,
7044 struct CommandListHeader CommandHeader;
7045 struct RequestBlock Request;
7046 struct ErrDescriptor ErrorDescriptor;
7048 struct Command *cmd;
7049 static const size_t cmd_sz = sizeof(*cmd) +
7050 sizeof(cmd->ErrorDescriptor);
7054 void __iomem *vaddr;
7057 vaddr = pci_ioremap_bar(pdev, 0);
7061 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
7062 * CCISS commands, so they must be allocated from the lower 4GiB of
7065 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
7071 cmd = dma_alloc_coherent(&pdev->dev, cmd_sz, &paddr64, GFP_KERNEL);
7077 /* This must fit, because of the 32-bit consistent DMA mask. Also,
7078 * although there's no guarantee, we assume that the address is at
7079 * least 4-byte aligned (most likely, it's page-aligned).
7081 paddr32 = cpu_to_le32(paddr64);
7083 cmd->CommandHeader.ReplyQueue = 0;
7084 cmd->CommandHeader.SGList = 0;
7085 cmd->CommandHeader.SGTotal = cpu_to_le16(0);
7086 cmd->CommandHeader.tag = cpu_to_le64(paddr64);
7087 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);
7089 cmd->Request.CDBLen = 16;
7090 cmd->Request.type_attr_dir =
7091 TYPE_ATTR_DIR(TYPE_MSG, ATTR_HEADOFQUEUE, XFER_NONE);
7092 cmd->Request.Timeout = 0; /* Don't time out */
7093 cmd->Request.CDB[0] = opcode;
7094 cmd->Request.CDB[1] = type;
7095 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */
7096 cmd->ErrorDescriptor.Addr =
7097 cpu_to_le64((le32_to_cpu(paddr32) + sizeof(*cmd)));
7098 cmd->ErrorDescriptor.Len = cpu_to_le32(sizeof(struct ErrorInfo));
7100 writel(le32_to_cpu(paddr32), vaddr + SA5_REQUEST_PORT_OFFSET);
7102 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) {
7103 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
7104 if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr64)
7106 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS);
7111 /* we leak the DMA buffer here ... no choice since the controller could
7112 * still complete the command.
7114 if (i == HPSA_MSG_SEND_RETRY_LIMIT) {
7115 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n",
7120 dma_free_coherent(&pdev->dev, cmd_sz, cmd, paddr64);
7122 if (tag & HPSA_ERROR_BIT) {
7123 dev_err(&pdev->dev, "controller message %02x:%02x failed\n",
7128 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n",
7133 #define hpsa_noop(p) hpsa_message(p, 3, 0)
7135 static int hpsa_controller_hard_reset(struct pci_dev *pdev,
7136 void __iomem *vaddr, u32 use_doorbell)
7140 /* For everything after the P600, the PCI power state method
7141 * of resetting the controller doesn't work, so we have this
7142 * other way using the doorbell register.
7144 dev_info(&pdev->dev, "using doorbell to reset controller\n");
7145 writel(use_doorbell, vaddr + SA5_DOORBELL);
7147 /* PMC hardware guys tell us we need a 10 second delay after
7148 * doorbell reset and before any attempt to talk to the board
7149 * at all to ensure that this actually works and doesn't fall
7150 * over in some weird corner cases.
7153 } else { /* Try to do it the PCI power state way */
7155 /* Quoting from the Open CISS Specification: "The Power
7156 * Management Control/Status Register (CSR) controls the power
7157 * state of the device. The normal operating state is D0,
7158 * CSR=00h. The software off state is D3, CSR=03h. To reset
7159 * the controller, place the interface device in D3 then to D0,
7160 * this causes a secondary PCI reset which will reset the
7165 dev_info(&pdev->dev, "using PCI PM to reset controller\n");
7167 /* enter the D3hot power management state */
7168 rc = pci_set_power_state(pdev, PCI_D3hot);
7174 /* enter the D0 power management state */
7175 rc = pci_set_power_state(pdev, PCI_D0);
7180 * The P600 requires a small delay when changing states.
7181 * Otherwise we may think the board did not reset and we bail.
7182 * This for kdump only and is particular to the P600.
7189 static void init_driver_version(char *driver_version, int len)
7191 memset(driver_version, 0, len);
7192 strncpy(driver_version, HPSA " " HPSA_DRIVER_VERSION, len - 1);
7195 static int write_driver_ver_to_cfgtable(struct CfgTable __iomem *cfgtable)
7197 char *driver_version;
7198 int i, size = sizeof(cfgtable->driver_version);
7200 driver_version = kmalloc(size, GFP_KERNEL);
7201 if (!driver_version)
7204 init_driver_version(driver_version, size);
7205 for (i = 0; i < size; i++)
7206 writeb(driver_version[i], &cfgtable->driver_version[i]);
7207 kfree(driver_version);
7211 static void read_driver_ver_from_cfgtable(struct CfgTable __iomem *cfgtable,
7212 unsigned char *driver_ver)
7216 for (i = 0; i < sizeof(cfgtable->driver_version); i++)
7217 driver_ver[i] = readb(&cfgtable->driver_version[i]);
7220 static int controller_reset_failed(struct CfgTable __iomem *cfgtable)
7223 char *driver_ver, *old_driver_ver;
7224 int rc, size = sizeof(cfgtable->driver_version);
7226 old_driver_ver = kmalloc_array(2, size, GFP_KERNEL);
7227 if (!old_driver_ver)
7229 driver_ver = old_driver_ver + size;
7231 /* After a reset, the 32 bytes of "driver version" in the cfgtable
7232 * should have been changed, otherwise we know the reset failed.
7234 init_driver_version(old_driver_ver, size);
7235 read_driver_ver_from_cfgtable(cfgtable, driver_ver);
7236 rc = !memcmp(driver_ver, old_driver_ver, size);
7237 kfree(old_driver_ver);
7240 /* This does a hard reset of the controller using PCI power management
7241 * states or the using the doorbell register.
7243 static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev, u32 board_id)
7247 u64 cfg_base_addr_index;
7248 void __iomem *vaddr;
7249 unsigned long paddr;
7250 u32 misc_fw_support;
7252 struct CfgTable __iomem *cfgtable;
7254 u16 command_register;
7256 /* For controllers as old as the P600, this is very nearly
7259 * pci_save_state(pci_dev);
7260 * pci_set_power_state(pci_dev, PCI_D3hot);
7261 * pci_set_power_state(pci_dev, PCI_D0);
7262 * pci_restore_state(pci_dev);
7264 * For controllers newer than the P600, the pci power state
7265 * method of resetting doesn't work so we have another way
7266 * using the doorbell register.
7269 if (!ctlr_is_resettable(board_id)) {
7270 dev_warn(&pdev->dev, "Controller not resettable\n");
7274 /* if controller is soft- but not hard resettable... */
7275 if (!ctlr_is_hard_resettable(board_id))
7276 return -ENOTSUPP; /* try soft reset later. */
7278 /* Save the PCI command register */
7279 pci_read_config_word(pdev, 4, &command_register);
7280 pci_save_state(pdev);
7282 /* find the first memory BAR, so we can find the cfg table */
7283 rc = hpsa_pci_find_memory_BAR(pdev, &paddr);
7286 vaddr = remap_pci_mem(paddr, 0x250);
7290 /* find cfgtable in order to check if reset via doorbell is supported */
7291 rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr,
7292 &cfg_base_addr_index, &cfg_offset);
7295 cfgtable = remap_pci_mem(pci_resource_start(pdev,
7296 cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable));
7301 rc = write_driver_ver_to_cfgtable(cfgtable);
7303 goto unmap_cfgtable;
7305 /* If reset via doorbell register is supported, use that.
7306 * There are two such methods. Favor the newest method.
7308 misc_fw_support = readl(&cfgtable->misc_fw_support);
7309 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2;
7311 use_doorbell = DOORBELL_CTLR_RESET2;
7313 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET;
7315 dev_warn(&pdev->dev,
7316 "Soft reset not supported. Firmware update is required.\n");
7317 rc = -ENOTSUPP; /* try soft reset */
7318 goto unmap_cfgtable;
7322 rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell);
7324 goto unmap_cfgtable;
7326 pci_restore_state(pdev);
7327 pci_write_config_word(pdev, 4, command_register);
7329 /* Some devices (notably the HP Smart Array 5i Controller)
7330 need a little pause here */
7331 msleep(HPSA_POST_RESET_PAUSE_MSECS);
7333 rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY);
7335 dev_warn(&pdev->dev,
7336 "Failed waiting for board to become ready after hard reset\n");
7337 goto unmap_cfgtable;
7340 rc = controller_reset_failed(vaddr);
7342 goto unmap_cfgtable;
7344 dev_warn(&pdev->dev, "Unable to successfully reset "
7345 "controller. Will try soft reset.\n");
7348 dev_info(&pdev->dev, "board ready after hard reset.\n");
7360 * We cannot read the structure directly, for portability we must use
7362 * This is for debug only.
7364 static void print_cfg_table(struct device *dev, struct CfgTable __iomem *tb)
7370 dev_info(dev, "Controller Configuration information\n");
7371 dev_info(dev, "------------------------------------\n");
7372 for (i = 0; i < 4; i++)
7373 temp_name[i] = readb(&(tb->Signature[i]));
7374 temp_name[4] = '\0';
7375 dev_info(dev, " Signature = %s\n", temp_name);
7376 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence)));
7377 dev_info(dev, " Transport methods supported = 0x%x\n",
7378 readl(&(tb->TransportSupport)));
7379 dev_info(dev, " Transport methods active = 0x%x\n",
7380 readl(&(tb->TransportActive)));
7381 dev_info(dev, " Requested transport Method = 0x%x\n",
7382 readl(&(tb->HostWrite.TransportRequest)));
7383 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n",
7384 readl(&(tb->HostWrite.CoalIntDelay)));
7385 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n",
7386 readl(&(tb->HostWrite.CoalIntCount)));
7387 dev_info(dev, " Max outstanding commands = %d\n",
7388 readl(&(tb->CmdsOutMax)));
7389 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
7390 for (i = 0; i < 16; i++)
7391 temp_name[i] = readb(&(tb->ServerName[i]));
7392 temp_name[16] = '\0';
7393 dev_info(dev, " Server Name = %s\n", temp_name);
7394 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n",
7395 readl(&(tb->HeartBeat)));
7396 #endif /* HPSA_DEBUG */
7399 static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
7401 int i, offset, mem_type, bar_type;
7403 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
7406 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
7407 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
7408 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
7411 mem_type = pci_resource_flags(pdev, i) &
7412 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
7414 case PCI_BASE_ADDRESS_MEM_TYPE_32:
7415 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
7416 offset += 4; /* 32 bit */
7418 case PCI_BASE_ADDRESS_MEM_TYPE_64:
7421 default: /* reserved in PCI 2.2 */
7422 dev_warn(&pdev->dev,
7423 "base address is invalid\n");
7428 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
7434 static void hpsa_disable_interrupt_mode(struct ctlr_info *h)
7436 pci_free_irq_vectors(h->pdev);
7437 h->msix_vectors = 0;
7440 static void hpsa_setup_reply_map(struct ctlr_info *h)
7442 const struct cpumask *mask;
7443 unsigned int queue, cpu;
7445 for (queue = 0; queue < h->msix_vectors; queue++) {
7446 mask = pci_irq_get_affinity(h->pdev, queue);
7450 for_each_cpu(cpu, mask)
7451 h->reply_map[cpu] = queue;
7456 for_each_possible_cpu(cpu)
7457 h->reply_map[cpu] = 0;
7460 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
7461 * controllers that are capable. If not, we use legacy INTx mode.
7463 static int hpsa_interrupt_mode(struct ctlr_info *h)
7465 unsigned int flags = PCI_IRQ_LEGACY;
7468 /* Some boards advertise MSI but don't really support it */
7469 switch (h->board_id) {
7476 ret = pci_alloc_irq_vectors(h->pdev, 1, MAX_REPLY_QUEUES,
7477 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
7479 h->msix_vectors = ret;
7483 flags |= PCI_IRQ_MSI;
7487 ret = pci_alloc_irq_vectors(h->pdev, 1, 1, flags);
7493 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id,
7497 u32 subsystem_vendor_id, subsystem_device_id;
7499 subsystem_vendor_id = pdev->subsystem_vendor;
7500 subsystem_device_id = pdev->subsystem_device;
7501 *board_id = ((subsystem_device_id << 16) & 0xffff0000) |
7502 subsystem_vendor_id;
7505 *legacy_board = false;
7506 for (i = 0; i < ARRAY_SIZE(products); i++)
7507 if (*board_id == products[i].board_id) {
7508 if (products[i].access != &SA5A_access &&
7509 products[i].access != &SA5B_access)
7511 dev_warn(&pdev->dev,
7512 "legacy board ID: 0x%08x\n",
7515 *legacy_board = true;
7519 dev_warn(&pdev->dev, "unrecognized board ID: 0x%08x\n", *board_id);
7521 *legacy_board = true;
7522 return ARRAY_SIZE(products) - 1; /* generic unknown smart array */
7525 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
7526 unsigned long *memory_bar)
7530 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++)
7531 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
7532 /* addressing mode bits already removed */
7533 *memory_bar = pci_resource_start(pdev, i);
7534 dev_dbg(&pdev->dev, "memory BAR = %lx\n",
7538 dev_warn(&pdev->dev, "no memory BAR found\n");
7542 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
7548 iterations = HPSA_BOARD_READY_ITERATIONS;
7550 iterations = HPSA_BOARD_NOT_READY_ITERATIONS;
7552 for (i = 0; i < iterations; i++) {
7553 scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET);
7554 if (wait_for_ready) {
7555 if (scratchpad == HPSA_FIRMWARE_READY)
7558 if (scratchpad != HPSA_FIRMWARE_READY)
7561 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
7563 dev_warn(&pdev->dev, "board not ready, timed out.\n");
7567 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
7568 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
7571 *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET);
7572 *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET);
7573 *cfg_base_addr &= (u32) 0x0000ffff;
7574 *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr);
7575 if (*cfg_base_addr_index == -1) {
7576 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n");
7582 static void hpsa_free_cfgtables(struct ctlr_info *h)
7584 if (h->transtable) {
7585 iounmap(h->transtable);
7586 h->transtable = NULL;
7589 iounmap(h->cfgtable);
7594 /* Find and map CISS config table and transfer table
7595 + * several items must be unmapped (freed) later
7597 static int hpsa_find_cfgtables(struct ctlr_info *h)
7601 u64 cfg_base_addr_index;
7605 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
7606 &cfg_base_addr_index, &cfg_offset);
7609 h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
7610 cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable));
7612 dev_err(&h->pdev->dev, "Failed mapping cfgtable\n");
7615 rc = write_driver_ver_to_cfgtable(h->cfgtable);
7618 /* Find performant mode table. */
7619 trans_offset = readl(&h->cfgtable->TransMethodOffset);
7620 h->transtable = remap_pci_mem(pci_resource_start(h->pdev,
7621 cfg_base_addr_index)+cfg_offset+trans_offset,
7622 sizeof(*h->transtable));
7623 if (!h->transtable) {
7624 dev_err(&h->pdev->dev, "Failed mapping transfer table\n");
7625 hpsa_free_cfgtables(h);
7631 static void hpsa_get_max_perf_mode_cmds(struct ctlr_info *h)
7633 #define MIN_MAX_COMMANDS 16
7634 BUILD_BUG_ON(MIN_MAX_COMMANDS <= HPSA_NRESERVED_CMDS);
7636 h->max_commands = readl(&h->cfgtable->MaxPerformantModeCommands);
7638 /* Limit commands in memory limited kdump scenario. */
7639 if (reset_devices && h->max_commands > 32)
7640 h->max_commands = 32;
7642 if (h->max_commands < MIN_MAX_COMMANDS) {
7643 dev_warn(&h->pdev->dev,
7644 "Controller reports max supported commands of %d Using %d instead. Ensure that firmware is up to date.\n",
7647 h->max_commands = MIN_MAX_COMMANDS;
7651 /* If the controller reports that the total max sg entries is greater than 512,
7652 * then we know that chained SG blocks work. (Original smart arrays did not
7653 * support chained SG blocks and would return zero for max sg entries.)
7655 static int hpsa_supports_chained_sg_blocks(struct ctlr_info *h)
7657 return h->maxsgentries > 512;
7660 /* Interrogate the hardware for some limits:
7661 * max commands, max SG elements without chaining, and with chaining,
7662 * SG chain block size, etc.
7664 static void hpsa_find_board_params(struct ctlr_info *h)
7666 hpsa_get_max_perf_mode_cmds(h);
7667 h->nr_cmds = h->max_commands;
7668 h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements));
7669 h->fw_support = readl(&(h->cfgtable->misc_fw_support));
7670 if (hpsa_supports_chained_sg_blocks(h)) {
7671 /* Limit in-command s/g elements to 32 save dma'able memory. */
7672 h->max_cmd_sg_entries = 32;
7673 h->chainsize = h->maxsgentries - h->max_cmd_sg_entries;
7674 h->maxsgentries--; /* save one for chain pointer */
7677 * Original smart arrays supported at most 31 s/g entries
7678 * embedded inline in the command (trying to use more
7679 * would lock up the controller)
7681 h->max_cmd_sg_entries = 31;
7682 h->maxsgentries = 31; /* default to traditional values */
7686 /* Find out what task management functions are supported and cache */
7687 h->TMFSupportFlags = readl(&(h->cfgtable->TMFSupportFlags));
7688 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags))
7689 dev_warn(&h->pdev->dev, "Physical aborts not supported\n");
7690 if (!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
7691 dev_warn(&h->pdev->dev, "Logical aborts not supported\n");
7692 if (!(HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags))
7693 dev_warn(&h->pdev->dev, "HP SSD Smart Path aborts not supported\n");
7696 static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)
7698 if (!check_signature(h->cfgtable->Signature, "CISS", 4)) {
7699 dev_err(&h->pdev->dev, "not a valid CISS config table\n");
7705 static inline void hpsa_set_driver_support_bits(struct ctlr_info *h)
7709 driver_support = readl(&(h->cfgtable->driver_support));
7710 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
7712 driver_support |= ENABLE_SCSI_PREFETCH;
7714 driver_support |= ENABLE_UNIT_ATTN;
7715 writel(driver_support, &(h->cfgtable->driver_support));
7718 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
7719 * in a prefetch beyond physical memory.
7721 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h)
7725 if (h->board_id != 0x3225103C)
7727 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
7728 dma_prefetch |= 0x8000;
7729 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
7732 static int hpsa_wait_for_clear_event_notify_ack(struct ctlr_info *h)
7736 unsigned long flags;
7737 /* wait until the clear_event_notify bit 6 is cleared by controller. */
7738 for (i = 0; i < MAX_CLEAR_EVENT_WAIT; i++) {
7739 spin_lock_irqsave(&h->lock, flags);
7740 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7741 spin_unlock_irqrestore(&h->lock, flags);
7742 if (!(doorbell_value & DOORBELL_CLEAR_EVENTS))
7744 /* delay and try again */
7745 msleep(CLEAR_EVENT_WAIT_INTERVAL);
7752 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h)
7756 unsigned long flags;
7758 /* under certain very rare conditions, this can take awhile.
7759 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
7760 * as we enter this code.)
7762 for (i = 0; i < MAX_MODE_CHANGE_WAIT; i++) {
7763 if (h->remove_in_progress)
7765 spin_lock_irqsave(&h->lock, flags);
7766 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7767 spin_unlock_irqrestore(&h->lock, flags);
7768 if (!(doorbell_value & CFGTBL_ChangeReq))
7770 /* delay and try again */
7771 msleep(MODE_CHANGE_WAIT_INTERVAL);
7778 /* return -ENODEV or other reason on error, 0 on success */
7779 static int hpsa_enter_simple_mode(struct ctlr_info *h)
7783 trans_support = readl(&(h->cfgtable->TransportSupport));
7784 if (!(trans_support & SIMPLE_MODE))
7787 h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
7789 /* Update the field, and then ring the doorbell */
7790 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
7791 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
7792 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
7793 if (hpsa_wait_for_mode_change_ack(h))
7795 print_cfg_table(&h->pdev->dev, h->cfgtable);
7796 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
7798 h->transMethod = CFGTBL_Trans_Simple;
7801 dev_err(&h->pdev->dev, "failed to enter simple mode\n");
7805 /* free items allocated or mapped by hpsa_pci_init */
7806 static void hpsa_free_pci_init(struct ctlr_info *h)
7808 hpsa_free_cfgtables(h); /* pci_init 4 */
7809 iounmap(h->vaddr); /* pci_init 3 */
7811 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
7813 * call pci_disable_device before pci_release_regions per
7814 * Documentation/driver-api/pci/pci.rst
7816 pci_disable_device(h->pdev); /* pci_init 1 */
7817 pci_release_regions(h->pdev); /* pci_init 2 */
7820 /* several items must be freed later */
7821 static int hpsa_pci_init(struct ctlr_info *h)
7823 int prod_index, err;
7826 prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id, &legacy_board);
7829 h->product_name = products[prod_index].product_name;
7830 h->access = *(products[prod_index].access);
7831 h->legacy_board = legacy_board;
7832 pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S |
7833 PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
7835 err = pci_enable_device(h->pdev);
7837 dev_err(&h->pdev->dev, "failed to enable PCI device\n");
7838 pci_disable_device(h->pdev);
7842 err = pci_request_regions(h->pdev, HPSA);
7844 dev_err(&h->pdev->dev,
7845 "failed to obtain PCI resources\n");
7846 pci_disable_device(h->pdev);
7850 pci_set_master(h->pdev);
7852 err = hpsa_interrupt_mode(h);
7856 /* setup mapping between CPU and reply queue */
7857 hpsa_setup_reply_map(h);
7859 err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr);
7861 goto clean2; /* intmode+region, pci */
7862 h->vaddr = remap_pci_mem(h->paddr, 0x250);
7864 dev_err(&h->pdev->dev, "failed to remap PCI mem\n");
7866 goto clean2; /* intmode+region, pci */
7868 err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
7870 goto clean3; /* vaddr, intmode+region, pci */
7871 err = hpsa_find_cfgtables(h);
7873 goto clean3; /* vaddr, intmode+region, pci */
7874 hpsa_find_board_params(h);
7876 if (!hpsa_CISS_signature_present(h)) {
7878 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
7880 hpsa_set_driver_support_bits(h);
7881 hpsa_p600_dma_prefetch_quirk(h);
7882 err = hpsa_enter_simple_mode(h);
7884 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
7887 clean4: /* cfgtables, vaddr, intmode+region, pci */
7888 hpsa_free_cfgtables(h);
7889 clean3: /* vaddr, intmode+region, pci */
7892 clean2: /* intmode+region, pci */
7893 hpsa_disable_interrupt_mode(h);
7896 * call pci_disable_device before pci_release_regions per
7897 * Documentation/driver-api/pci/pci.rst
7899 pci_disable_device(h->pdev);
7900 pci_release_regions(h->pdev);
7904 static void hpsa_hba_inquiry(struct ctlr_info *h)
7908 #define HBA_INQUIRY_BYTE_COUNT 64
7909 h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL);
7910 if (!h->hba_inquiry_data)
7912 rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0,
7913 h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT);
7915 kfree(h->hba_inquiry_data);
7916 h->hba_inquiry_data = NULL;
7920 static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id)
7923 void __iomem *vaddr;
7928 /* kdump kernel is loading, we don't know in which state is
7929 * the pci interface. The dev->enable_cnt is equal zero
7930 * so we call enable+disable, wait a while and switch it on.
7932 rc = pci_enable_device(pdev);
7934 dev_warn(&pdev->dev, "Failed to enable PCI device\n");
7937 pci_disable_device(pdev);
7938 msleep(260); /* a randomly chosen number */
7939 rc = pci_enable_device(pdev);
7941 dev_warn(&pdev->dev, "failed to enable device.\n");
7945 pci_set_master(pdev);
7947 vaddr = pci_ioremap_bar(pdev, 0);
7948 if (vaddr == NULL) {
7952 writel(SA5_INTR_OFF, vaddr + SA5_REPLY_INTR_MASK_OFFSET);
7955 /* Reset the controller with a PCI power-cycle or via doorbell */
7956 rc = hpsa_kdump_hard_reset_controller(pdev, board_id);
7958 /* -ENOTSUPP here means we cannot reset the controller
7959 * but it's already (and still) up and running in
7960 * "performant mode". Or, it might be 640x, which can't reset
7961 * due to concerns about shared bbwc between 6402/6404 pair.
7966 /* Now try to get the controller to respond to a no-op */
7967 dev_info(&pdev->dev, "Waiting for controller to respond to no-op\n");
7968 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) {
7969 if (hpsa_noop(pdev) == 0)
7972 dev_warn(&pdev->dev, "no-op failed%s\n",
7973 (i < 11 ? "; re-trying" : ""));
7978 pci_disable_device(pdev);
7982 static void hpsa_free_cmd_pool(struct ctlr_info *h)
7984 kfree(h->cmd_pool_bits);
7985 h->cmd_pool_bits = NULL;
7987 dma_free_coherent(&h->pdev->dev,
7988 h->nr_cmds * sizeof(struct CommandList),
7990 h->cmd_pool_dhandle);
7992 h->cmd_pool_dhandle = 0;
7994 if (h->errinfo_pool) {
7995 dma_free_coherent(&h->pdev->dev,
7996 h->nr_cmds * sizeof(struct ErrorInfo),
7998 h->errinfo_pool_dhandle);
7999 h->errinfo_pool = NULL;
8000 h->errinfo_pool_dhandle = 0;
8004 static int hpsa_alloc_cmd_pool(struct ctlr_info *h)
8006 h->cmd_pool_bits = kcalloc(DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG),
8007 sizeof(unsigned long),
8009 h->cmd_pool = dma_alloc_coherent(&h->pdev->dev,
8010 h->nr_cmds * sizeof(*h->cmd_pool),
8011 &h->cmd_pool_dhandle, GFP_KERNEL);
8012 h->errinfo_pool = dma_alloc_coherent(&h->pdev->dev,
8013 h->nr_cmds * sizeof(*h->errinfo_pool),
8014 &h->errinfo_pool_dhandle, GFP_KERNEL);
8015 if ((h->cmd_pool_bits == NULL)
8016 || (h->cmd_pool == NULL)
8017 || (h->errinfo_pool == NULL)) {
8018 dev_err(&h->pdev->dev, "out of memory in %s", __func__);
8021 hpsa_preinitialize_commands(h);
8024 hpsa_free_cmd_pool(h);
8028 /* clear affinity hints and free MSI-X, MSI, or legacy INTx vectors */
8029 static void hpsa_free_irqs(struct ctlr_info *h)
8034 if (hpsa_simple_mode)
8035 irq_vector = h->intr_mode;
8037 if (!h->msix_vectors || h->intr_mode != PERF_MODE_INT) {
8038 /* Single reply queue, only one irq to free */
8039 free_irq(pci_irq_vector(h->pdev, irq_vector),
8040 &h->q[h->intr_mode]);
8041 h->q[h->intr_mode] = 0;
8045 for (i = 0; i < h->msix_vectors; i++) {
8046 free_irq(pci_irq_vector(h->pdev, i), &h->q[i]);
8049 for (; i < MAX_REPLY_QUEUES; i++)
8053 /* returns 0 on success; cleans up and returns -Enn on error */
8054 static int hpsa_request_irqs(struct ctlr_info *h,
8055 irqreturn_t (*msixhandler)(int, void *),
8056 irqreturn_t (*intxhandler)(int, void *))
8061 if (hpsa_simple_mode)
8062 irq_vector = h->intr_mode;
8065 * initialize h->q[x] = x so that interrupt handlers know which
8068 for (i = 0; i < MAX_REPLY_QUEUES; i++)
8071 if (h->intr_mode == PERF_MODE_INT && h->msix_vectors > 0) {
8072 /* If performant mode and MSI-X, use multiple reply queues */
8073 for (i = 0; i < h->msix_vectors; i++) {
8074 sprintf(h->intrname[i], "%s-msix%d", h->devname, i);
8075 rc = request_irq(pci_irq_vector(h->pdev, i), msixhandler,
8081 dev_err(&h->pdev->dev,
8082 "failed to get irq %d for %s\n",
8083 pci_irq_vector(h->pdev, i), h->devname);
8084 for (j = 0; j < i; j++) {
8085 free_irq(pci_irq_vector(h->pdev, j), &h->q[j]);
8088 for (; j < MAX_REPLY_QUEUES; j++)
8094 /* Use single reply pool */
8095 if (h->msix_vectors > 0 || h->pdev->msi_enabled) {
8096 sprintf(h->intrname[0], "%s-msi%s", h->devname,
8097 h->msix_vectors ? "x" : "");
8098 rc = request_irq(pci_irq_vector(h->pdev, irq_vector),
8101 &h->q[h->intr_mode]);
8103 sprintf(h->intrname[h->intr_mode],
8104 "%s-intx", h->devname);
8105 rc = request_irq(pci_irq_vector(h->pdev, irq_vector),
8106 intxhandler, IRQF_SHARED,
8108 &h->q[h->intr_mode]);
8112 dev_err(&h->pdev->dev, "failed to get irq %d for %s\n",
8113 pci_irq_vector(h->pdev, irq_vector), h->devname);
8120 static int hpsa_kdump_soft_reset(struct ctlr_info *h)
8123 hpsa_send_host_reset(h, HPSA_RESET_TYPE_CONTROLLER);
8125 dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n");
8126 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY);
8128 dev_warn(&h->pdev->dev, "Soft reset had no effect.\n");
8132 dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n");
8133 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
8135 dev_warn(&h->pdev->dev, "Board failed to become ready "
8136 "after soft reset.\n");
8143 static void hpsa_free_reply_queues(struct ctlr_info *h)
8147 for (i = 0; i < h->nreply_queues; i++) {
8148 if (!h->reply_queue[i].head)
8150 dma_free_coherent(&h->pdev->dev,
8151 h->reply_queue_size,
8152 h->reply_queue[i].head,
8153 h->reply_queue[i].busaddr);
8154 h->reply_queue[i].head = NULL;
8155 h->reply_queue[i].busaddr = 0;
8157 h->reply_queue_size = 0;
8160 static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h)
8162 hpsa_free_performant_mode(h); /* init_one 7 */
8163 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
8164 hpsa_free_cmd_pool(h); /* init_one 5 */
8165 hpsa_free_irqs(h); /* init_one 4 */
8166 scsi_host_put(h->scsi_host); /* init_one 3 */
8167 h->scsi_host = NULL; /* init_one 3 */
8168 hpsa_free_pci_init(h); /* init_one 2_5 */
8169 free_percpu(h->lockup_detected); /* init_one 2 */
8170 h->lockup_detected = NULL; /* init_one 2 */
8171 if (h->resubmit_wq) {
8172 destroy_workqueue(h->resubmit_wq); /* init_one 1 */
8173 h->resubmit_wq = NULL;
8175 if (h->rescan_ctlr_wq) {
8176 destroy_workqueue(h->rescan_ctlr_wq);
8177 h->rescan_ctlr_wq = NULL;
8179 if (h->monitor_ctlr_wq) {
8180 destroy_workqueue(h->monitor_ctlr_wq);
8181 h->monitor_ctlr_wq = NULL;
8184 kfree(h); /* init_one 1 */
8187 /* Called when controller lockup detected. */
8188 static void fail_all_outstanding_cmds(struct ctlr_info *h)
8191 struct CommandList *c;
8194 flush_workqueue(h->resubmit_wq); /* ensure all cmds are fully built */
8195 for (i = 0; i < h->nr_cmds; i++) {
8196 c = h->cmd_pool + i;
8197 refcount = atomic_inc_return(&c->refcount);
8199 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
8201 atomic_dec(&h->commands_outstanding);
8206 dev_warn(&h->pdev->dev,
8207 "failed %d commands in fail_all\n", failcount);
8210 static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value)
8214 for_each_online_cpu(cpu) {
8215 u32 *lockup_detected;
8216 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
8217 *lockup_detected = value;
8219 wmb(); /* be sure the per-cpu variables are out to memory */
8222 static void controller_lockup_detected(struct ctlr_info *h)
8224 unsigned long flags;
8225 u32 lockup_detected;
8227 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8228 spin_lock_irqsave(&h->lock, flags);
8229 lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
8230 if (!lockup_detected) {
8231 /* no heartbeat, but controller gave us a zero. */
8232 dev_warn(&h->pdev->dev,
8233 "lockup detected after %d but scratchpad register is zero\n",
8234 h->heartbeat_sample_interval / HZ);
8235 lockup_detected = 0xffffffff;
8237 set_lockup_detected_for_all_cpus(h, lockup_detected);
8238 spin_unlock_irqrestore(&h->lock, flags);
8239 dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x after %d\n",
8240 lockup_detected, h->heartbeat_sample_interval / HZ);
8241 if (lockup_detected == 0xffff0000) {
8242 dev_warn(&h->pdev->dev, "Telling controller to do a CHKPT\n");
8243 writel(DOORBELL_GENERATE_CHKPT, h->vaddr + SA5_DOORBELL);
8245 pci_disable_device(h->pdev);
8246 fail_all_outstanding_cmds(h);
8249 static int detect_controller_lockup(struct ctlr_info *h)
8253 unsigned long flags;
8255 now = get_jiffies_64();
8256 /* If we've received an interrupt recently, we're ok. */
8257 if (time_after64(h->last_intr_timestamp +
8258 (h->heartbeat_sample_interval), now))
8262 * If we've already checked the heartbeat recently, we're ok.
8263 * This could happen if someone sends us a signal. We
8264 * otherwise don't care about signals in this thread.
8266 if (time_after64(h->last_heartbeat_timestamp +
8267 (h->heartbeat_sample_interval), now))
8270 /* If heartbeat has not changed since we last looked, we're not ok. */
8271 spin_lock_irqsave(&h->lock, flags);
8272 heartbeat = readl(&h->cfgtable->HeartBeat);
8273 spin_unlock_irqrestore(&h->lock, flags);
8274 if (h->last_heartbeat == heartbeat) {
8275 controller_lockup_detected(h);
8280 h->last_heartbeat = heartbeat;
8281 h->last_heartbeat_timestamp = now;
8286 * Set ioaccel status for all ioaccel volumes.
8288 * Called from monitor controller worker (hpsa_event_monitor_worker)
8290 * A Volume (or Volumes that comprise an Array set) may be undergoing a
8291 * transformation, so we will be turning off ioaccel for all volumes that
8292 * make up the Array.
8294 static void hpsa_set_ioaccel_status(struct ctlr_info *h)
8300 struct hpsa_scsi_dev_t *device;
8305 buf = kmalloc(64, GFP_KERNEL);
8310 * Run through current device list used during I/O requests.
8312 for (i = 0; i < h->ndevices; i++) {
8313 int offload_to_be_enabled = 0;
8314 int offload_config = 0;
8320 if (!hpsa_vpd_page_supported(h, device->scsi3addr,
8321 HPSA_VPD_LV_IOACCEL_STATUS))
8326 rc = hpsa_scsi_do_inquiry(h, device->scsi3addr,
8327 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS,
8332 ioaccel_status = buf[IOACCEL_STATUS_BYTE];
8335 * Check if offload is still configured on
8338 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT);
8340 * If offload is configured on, check to see if ioaccel
8341 * needs to be enabled.
8344 offload_to_be_enabled =
8345 !!(ioaccel_status & OFFLOAD_ENABLED_BIT);
8348 * If ioaccel is to be re-enabled, re-enable later during the
8349 * scan operation so the driver can get a fresh raidmap
8350 * before turning ioaccel back on.
8352 if (offload_to_be_enabled)
8356 * Immediately turn off ioaccel for any volume the
8357 * controller tells us to. Some of the reasons could be:
8358 * transformation - change to the LVs of an Array.
8359 * degraded volume - component failure
8361 hpsa_turn_off_ioaccel_for_device(device);
8367 static void hpsa_ack_ctlr_events(struct ctlr_info *h)
8371 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
8374 /* Ask the controller to clear the events we're handling. */
8375 if ((h->transMethod & (CFGTBL_Trans_io_accel1
8376 | CFGTBL_Trans_io_accel2)) &&
8377 (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE ||
8378 h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)) {
8380 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE)
8381 event_type = "state change";
8382 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)
8383 event_type = "configuration change";
8384 /* Stop sending new RAID offload reqs via the IO accelerator */
8385 scsi_block_requests(h->scsi_host);
8386 hpsa_set_ioaccel_status(h);
8387 hpsa_drain_accel_commands(h);
8388 /* Set 'accelerator path config change' bit */
8389 dev_warn(&h->pdev->dev,
8390 "Acknowledging event: 0x%08x (HP SSD Smart Path %s)\n",
8391 h->events, event_type);
8392 writel(h->events, &(h->cfgtable->clear_event_notify));
8393 /* Set the "clear event notify field update" bit 6 */
8394 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
8395 /* Wait until ctlr clears 'clear event notify field', bit 6 */
8396 hpsa_wait_for_clear_event_notify_ack(h);
8397 scsi_unblock_requests(h->scsi_host);
8399 /* Acknowledge controller notification events. */
8400 writel(h->events, &(h->cfgtable->clear_event_notify));
8401 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
8402 hpsa_wait_for_clear_event_notify_ack(h);
8407 /* Check a register on the controller to see if there are configuration
8408 * changes (added/changed/removed logical drives, etc.) which mean that
8409 * we should rescan the controller for devices.
8410 * Also check flag for driver-initiated rescan.
8412 static int hpsa_ctlr_needs_rescan(struct ctlr_info *h)
8414 if (h->drv_req_rescan) {
8415 h->drv_req_rescan = 0;
8419 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
8422 h->events = readl(&(h->cfgtable->event_notify));
8423 return h->events & RESCAN_REQUIRED_EVENT_BITS;
8427 * Check if any of the offline devices have become ready
8429 static int hpsa_offline_devices_ready(struct ctlr_info *h)
8431 unsigned long flags;
8432 struct offline_device_entry *d;
8433 struct list_head *this, *tmp;
8435 spin_lock_irqsave(&h->offline_device_lock, flags);
8436 list_for_each_safe(this, tmp, &h->offline_device_list) {
8437 d = list_entry(this, struct offline_device_entry,
8439 spin_unlock_irqrestore(&h->offline_device_lock, flags);
8440 if (!hpsa_volume_offline(h, d->scsi3addr)) {
8441 spin_lock_irqsave(&h->offline_device_lock, flags);
8442 list_del(&d->offline_list);
8443 spin_unlock_irqrestore(&h->offline_device_lock, flags);
8446 spin_lock_irqsave(&h->offline_device_lock, flags);
8448 spin_unlock_irqrestore(&h->offline_device_lock, flags);
8452 static int hpsa_luns_changed(struct ctlr_info *h)
8454 int rc = 1; /* assume there are changes */
8455 struct ReportLUNdata *logdev = NULL;
8457 /* if we can't find out if lun data has changed,
8458 * assume that it has.
8461 if (!h->lastlogicals)
8464 logdev = kzalloc(sizeof(*logdev), GFP_KERNEL);
8468 if (hpsa_scsi_do_report_luns(h, 1, logdev, sizeof(*logdev), 0)) {
8469 dev_warn(&h->pdev->dev,
8470 "report luns failed, can't track lun changes.\n");
8473 if (memcmp(logdev, h->lastlogicals, sizeof(*logdev))) {
8474 dev_info(&h->pdev->dev,
8475 "Lun changes detected.\n");
8476 memcpy(h->lastlogicals, logdev, sizeof(*logdev));
8479 rc = 0; /* no changes detected. */
8485 static void hpsa_perform_rescan(struct ctlr_info *h)
8487 struct Scsi_Host *sh = NULL;
8488 unsigned long flags;
8491 * Do the scan after the reset
8493 spin_lock_irqsave(&h->reset_lock, flags);
8494 if (h->reset_in_progress) {
8495 h->drv_req_rescan = 1;
8496 spin_unlock_irqrestore(&h->reset_lock, flags);
8499 spin_unlock_irqrestore(&h->reset_lock, flags);
8501 sh = scsi_host_get(h->scsi_host);
8503 hpsa_scan_start(sh);
8505 h->drv_req_rescan = 0;
8510 * watch for controller events
8512 static void hpsa_event_monitor_worker(struct work_struct *work)
8514 struct ctlr_info *h = container_of(to_delayed_work(work),
8515 struct ctlr_info, event_monitor_work);
8516 unsigned long flags;
8518 spin_lock_irqsave(&h->lock, flags);
8519 if (h->remove_in_progress) {
8520 spin_unlock_irqrestore(&h->lock, flags);
8523 spin_unlock_irqrestore(&h->lock, flags);
8525 if (hpsa_ctlr_needs_rescan(h)) {
8526 hpsa_ack_ctlr_events(h);
8527 hpsa_perform_rescan(h);
8530 spin_lock_irqsave(&h->lock, flags);
8531 if (!h->remove_in_progress)
8532 queue_delayed_work(h->monitor_ctlr_wq, &h->event_monitor_work,
8533 HPSA_EVENT_MONITOR_INTERVAL);
8534 spin_unlock_irqrestore(&h->lock, flags);
8537 static void hpsa_rescan_ctlr_worker(struct work_struct *work)
8539 unsigned long flags;
8540 struct ctlr_info *h = container_of(to_delayed_work(work),
8541 struct ctlr_info, rescan_ctlr_work);
8543 spin_lock_irqsave(&h->lock, flags);
8544 if (h->remove_in_progress) {
8545 spin_unlock_irqrestore(&h->lock, flags);
8548 spin_unlock_irqrestore(&h->lock, flags);
8550 if (h->drv_req_rescan || hpsa_offline_devices_ready(h)) {
8551 hpsa_perform_rescan(h);
8552 } else if (h->discovery_polling) {
8553 if (hpsa_luns_changed(h)) {
8554 dev_info(&h->pdev->dev,
8555 "driver discovery polling rescan.\n");
8556 hpsa_perform_rescan(h);
8559 spin_lock_irqsave(&h->lock, flags);
8560 if (!h->remove_in_progress)
8561 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
8562 h->heartbeat_sample_interval);
8563 spin_unlock_irqrestore(&h->lock, flags);
8566 static void hpsa_monitor_ctlr_worker(struct work_struct *work)
8568 unsigned long flags;
8569 struct ctlr_info *h = container_of(to_delayed_work(work),
8570 struct ctlr_info, monitor_ctlr_work);
8572 detect_controller_lockup(h);
8573 if (lockup_detected(h))
8576 spin_lock_irqsave(&h->lock, flags);
8577 if (!h->remove_in_progress)
8578 queue_delayed_work(h->monitor_ctlr_wq, &h->monitor_ctlr_work,
8579 h->heartbeat_sample_interval);
8580 spin_unlock_irqrestore(&h->lock, flags);
8583 static struct workqueue_struct *hpsa_create_controller_wq(struct ctlr_info *h,
8586 struct workqueue_struct *wq = NULL;
8588 wq = alloc_ordered_workqueue("%s_%d_hpsa", 0, name, h->ctlr);
8590 dev_err(&h->pdev->dev, "failed to create %s workqueue\n", name);
8595 static void hpda_free_ctlr_info(struct ctlr_info *h)
8597 kfree(h->reply_map);
8601 static struct ctlr_info *hpda_alloc_ctlr_info(void)
8603 struct ctlr_info *h;
8605 h = kzalloc(sizeof(*h), GFP_KERNEL);
8609 h->reply_map = kcalloc(nr_cpu_ids, sizeof(*h->reply_map), GFP_KERNEL);
8610 if (!h->reply_map) {
8617 static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
8620 struct ctlr_info *h;
8621 int try_soft_reset = 0;
8622 unsigned long flags;
8625 if (number_of_controllers == 0)
8626 printk(KERN_INFO DRIVER_NAME "\n");
8628 rc = hpsa_lookup_board_id(pdev, &board_id, NULL);
8630 dev_warn(&pdev->dev, "Board ID not found\n");
8634 rc = hpsa_init_reset_devices(pdev, board_id);
8636 if (rc != -ENOTSUPP)
8638 /* If the reset fails in a particular way (it has no way to do
8639 * a proper hard reset, so returns -ENOTSUPP) we can try to do
8640 * a soft reset once we get the controller configured up to the
8641 * point that it can accept a command.
8647 reinit_after_soft_reset:
8649 /* Command structures must be aligned on a 32-byte boundary because
8650 * the 5 lower bits of the address are used by the hardware. and by
8651 * the driver. See comments in hpsa.h for more info.
8653 BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT);
8654 h = hpda_alloc_ctlr_info();
8656 dev_err(&pdev->dev, "Failed to allocate controller head\n");
8662 h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT;
8663 INIT_LIST_HEAD(&h->offline_device_list);
8664 spin_lock_init(&h->lock);
8665 spin_lock_init(&h->offline_device_lock);
8666 spin_lock_init(&h->scan_lock);
8667 spin_lock_init(&h->reset_lock);
8668 atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS);
8670 /* Allocate and clear per-cpu variable lockup_detected */
8671 h->lockup_detected = alloc_percpu(u32);
8672 if (!h->lockup_detected) {
8673 dev_err(&h->pdev->dev, "Failed to allocate lockup detector\n");
8675 goto clean1; /* aer/h */
8677 set_lockup_detected_for_all_cpus(h, 0);
8679 rc = hpsa_pci_init(h);
8681 goto clean2; /* lu, aer/h */
8683 /* relies on h-> settings made by hpsa_pci_init, including
8684 * interrupt_mode h->intr */
8685 rc = hpsa_scsi_host_alloc(h);
8687 goto clean2_5; /* pci, lu, aer/h */
8689 sprintf(h->devname, HPSA "%d", h->scsi_host->host_no);
8690 h->ctlr = number_of_controllers;
8691 number_of_controllers++;
8693 /* configure PCI DMA stuff */
8694 rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
8698 rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
8702 dev_err(&pdev->dev, "no suitable DMA available\n");
8703 goto clean3; /* shost, pci, lu, aer/h */
8707 /* make sure the board interrupts are off */
8708 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8710 rc = hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx);
8712 goto clean3; /* shost, pci, lu, aer/h */
8713 rc = hpsa_alloc_cmd_pool(h);
8715 goto clean4; /* irq, shost, pci, lu, aer/h */
8716 rc = hpsa_alloc_sg_chain_blocks(h);
8718 goto clean5; /* cmd, irq, shost, pci, lu, aer/h */
8719 init_waitqueue_head(&h->scan_wait_queue);
8720 init_waitqueue_head(&h->event_sync_wait_queue);
8721 mutex_init(&h->reset_mutex);
8722 h->scan_finished = 1; /* no scan currently in progress */
8723 h->scan_waiting = 0;
8725 pci_set_drvdata(pdev, h);
8728 spin_lock_init(&h->devlock);
8729 rc = hpsa_put_ctlr_into_performant_mode(h);
8731 goto clean6; /* sg, cmd, irq, shost, pci, lu, aer/h */
8733 /* create the resubmit workqueue */
8734 h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan");
8735 if (!h->rescan_ctlr_wq) {
8740 h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit");
8741 if (!h->resubmit_wq) {
8743 goto clean7; /* aer/h */
8746 h->monitor_ctlr_wq = hpsa_create_controller_wq(h, "monitor");
8747 if (!h->monitor_ctlr_wq) {
8753 * At this point, the controller is ready to take commands.
8754 * Now, if reset_devices and the hard reset didn't work, try
8755 * the soft reset and see if that works.
8757 if (try_soft_reset) {
8759 /* This is kind of gross. We may or may not get a completion
8760 * from the soft reset command, and if we do, then the value
8761 * from the fifo may or may not be valid. So, we wait 10 secs
8762 * after the reset throwing away any completions we get during
8763 * that time. Unregister the interrupt handler and register
8764 * fake ones to scoop up any residual completions.
8766 spin_lock_irqsave(&h->lock, flags);
8767 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8768 spin_unlock_irqrestore(&h->lock, flags);
8770 rc = hpsa_request_irqs(h, hpsa_msix_discard_completions,
8771 hpsa_intx_discard_completions);
8773 dev_warn(&h->pdev->dev,
8774 "Failed to request_irq after soft reset.\n");
8776 * cannot goto clean7 or free_irqs will be called
8777 * again. Instead, do its work
8779 hpsa_free_performant_mode(h); /* clean7 */
8780 hpsa_free_sg_chain_blocks(h); /* clean6 */
8781 hpsa_free_cmd_pool(h); /* clean5 */
8783 * skip hpsa_free_irqs(h) clean4 since that
8784 * was just called before request_irqs failed
8789 rc = hpsa_kdump_soft_reset(h);
8791 /* Neither hard nor soft reset worked, we're hosed. */
8794 dev_info(&h->pdev->dev, "Board READY.\n");
8795 dev_info(&h->pdev->dev,
8796 "Waiting for stale completions to drain.\n");
8797 h->access.set_intr_mask(h, HPSA_INTR_ON);
8799 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8801 rc = controller_reset_failed(h->cfgtable);
8803 dev_info(&h->pdev->dev,
8804 "Soft reset appears to have failed.\n");
8806 /* since the controller's reset, we have to go back and re-init
8807 * everything. Easiest to just forget what we've done and do it
8810 hpsa_undo_allocations_after_kdump_soft_reset(h);
8813 /* don't goto clean, we already unallocated */
8816 goto reinit_after_soft_reset;
8819 /* Enable Accelerated IO path at driver layer */
8820 h->acciopath_status = 1;
8821 /* Disable discovery polling.*/
8822 h->discovery_polling = 0;
8825 /* Turn the interrupts on so we can service requests */
8826 h->access.set_intr_mask(h, HPSA_INTR_ON);
8828 hpsa_hba_inquiry(h);
8830 h->lastlogicals = kzalloc(sizeof(*(h->lastlogicals)), GFP_KERNEL);
8831 if (!h->lastlogicals)
8832 dev_info(&h->pdev->dev,
8833 "Can't track change to report lun data\n");
8835 /* hook into SCSI subsystem */
8836 rc = hpsa_scsi_add_host(h);
8838 goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
8840 /* Monitor the controller for firmware lockups */
8841 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
8842 INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker);
8843 schedule_delayed_work(&h->monitor_ctlr_work,
8844 h->heartbeat_sample_interval);
8845 INIT_DELAYED_WORK(&h->rescan_ctlr_work, hpsa_rescan_ctlr_worker);
8846 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
8847 h->heartbeat_sample_interval);
8848 INIT_DELAYED_WORK(&h->event_monitor_work, hpsa_event_monitor_worker);
8849 schedule_delayed_work(&h->event_monitor_work,
8850 HPSA_EVENT_MONITOR_INTERVAL);
8853 clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
8854 hpsa_free_performant_mode(h);
8855 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8856 clean6: /* sg, cmd, irq, pci, lockup, wq/aer/h */
8857 hpsa_free_sg_chain_blocks(h);
8858 clean5: /* cmd, irq, shost, pci, lu, aer/h */
8859 hpsa_free_cmd_pool(h);
8860 clean4: /* irq, shost, pci, lu, aer/h */
8862 clean3: /* shost, pci, lu, aer/h */
8863 scsi_host_put(h->scsi_host);
8864 h->scsi_host = NULL;
8865 clean2_5: /* pci, lu, aer/h */
8866 hpsa_free_pci_init(h);
8867 clean2: /* lu, aer/h */
8868 if (h->lockup_detected) {
8869 free_percpu(h->lockup_detected);
8870 h->lockup_detected = NULL;
8872 clean1: /* wq/aer/h */
8873 if (h->resubmit_wq) {
8874 destroy_workqueue(h->resubmit_wq);
8875 h->resubmit_wq = NULL;
8877 if (h->rescan_ctlr_wq) {
8878 destroy_workqueue(h->rescan_ctlr_wq);
8879 h->rescan_ctlr_wq = NULL;
8881 if (h->monitor_ctlr_wq) {
8882 destroy_workqueue(h->monitor_ctlr_wq);
8883 h->monitor_ctlr_wq = NULL;
8889 static void hpsa_flush_cache(struct ctlr_info *h)
8892 struct CommandList *c;
8895 if (unlikely(lockup_detected(h)))
8897 flush_buf = kzalloc(4, GFP_KERNEL);
8903 if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0,
8904 RAID_CTLR_LUNID, TYPE_CMD)) {
8907 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_TO_DEVICE,
8911 if (c->err_info->CommandStatus != 0)
8913 dev_warn(&h->pdev->dev,
8914 "error flushing cache on controller\n");
8919 /* Make controller gather fresh report lun data each time we
8920 * send down a report luns request
8922 static void hpsa_disable_rld_caching(struct ctlr_info *h)
8925 struct CommandList *c;
8928 /* Don't bother trying to set diag options if locked up */
8929 if (unlikely(h->lockup_detected))
8932 options = kzalloc(sizeof(*options), GFP_KERNEL);
8938 /* first, get the current diag options settings */
8939 if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0,
8940 RAID_CTLR_LUNID, TYPE_CMD))
8943 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
8945 if ((rc != 0) || (c->err_info->CommandStatus != 0))
8948 /* Now, set the bit for disabling the RLD caching */
8949 *options |= HPSA_DIAG_OPTS_DISABLE_RLD_CACHING;
8951 if (fill_cmd(c, BMIC_SET_DIAG_OPTIONS, h, options, 4, 0,
8952 RAID_CTLR_LUNID, TYPE_CMD))
8955 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_TO_DEVICE,
8957 if ((rc != 0) || (c->err_info->CommandStatus != 0))
8960 /* Now verify that it got set: */
8961 if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0,
8962 RAID_CTLR_LUNID, TYPE_CMD))
8965 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
8967 if ((rc != 0) || (c->err_info->CommandStatus != 0))
8970 if (*options & HPSA_DIAG_OPTS_DISABLE_RLD_CACHING)
8974 dev_err(&h->pdev->dev,
8975 "Error: failed to disable report lun data caching.\n");
8981 static void __hpsa_shutdown(struct pci_dev *pdev)
8983 struct ctlr_info *h;
8985 h = pci_get_drvdata(pdev);
8986 /* Turn board interrupts off and send the flush cache command
8987 * sendcmd will turn off interrupt, and send the flush...
8988 * To write all data in the battery backed cache to disks
8990 hpsa_flush_cache(h);
8991 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8992 hpsa_free_irqs(h); /* init_one 4 */
8993 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
8996 static void hpsa_shutdown(struct pci_dev *pdev)
8998 __hpsa_shutdown(pdev);
8999 pci_disable_device(pdev);
9002 static void hpsa_free_device_info(struct ctlr_info *h)
9006 for (i = 0; i < h->ndevices; i++) {
9012 static void hpsa_remove_one(struct pci_dev *pdev)
9014 struct ctlr_info *h;
9015 unsigned long flags;
9017 if (pci_get_drvdata(pdev) == NULL) {
9018 dev_err(&pdev->dev, "unable to remove device\n");
9021 h = pci_get_drvdata(pdev);
9023 /* Get rid of any controller monitoring work items */
9024 spin_lock_irqsave(&h->lock, flags);
9025 h->remove_in_progress = 1;
9026 spin_unlock_irqrestore(&h->lock, flags);
9027 cancel_delayed_work_sync(&h->monitor_ctlr_work);
9028 cancel_delayed_work_sync(&h->rescan_ctlr_work);
9029 cancel_delayed_work_sync(&h->event_monitor_work);
9030 destroy_workqueue(h->rescan_ctlr_wq);
9031 destroy_workqueue(h->resubmit_wq);
9032 destroy_workqueue(h->monitor_ctlr_wq);
9034 hpsa_delete_sas_host(h);
9037 * Call before disabling interrupts.
9038 * scsi_remove_host can trigger I/O operations especially
9039 * when multipath is enabled. There can be SYNCHRONIZE CACHE
9040 * operations which cannot complete and will hang the system.
9043 scsi_remove_host(h->scsi_host); /* init_one 8 */
9044 /* includes hpsa_free_irqs - init_one 4 */
9045 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
9046 __hpsa_shutdown(pdev);
9048 hpsa_free_device_info(h); /* scan */
9050 kfree(h->hba_inquiry_data); /* init_one 10 */
9051 h->hba_inquiry_data = NULL; /* init_one 10 */
9052 hpsa_free_ioaccel2_sg_chain_blocks(h);
9053 hpsa_free_performant_mode(h); /* init_one 7 */
9054 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
9055 hpsa_free_cmd_pool(h); /* init_one 5 */
9056 kfree(h->lastlogicals);
9058 /* hpsa_free_irqs already called via hpsa_shutdown init_one 4 */
9060 scsi_host_put(h->scsi_host); /* init_one 3 */
9061 h->scsi_host = NULL; /* init_one 3 */
9063 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
9064 hpsa_free_pci_init(h); /* init_one 2.5 */
9066 free_percpu(h->lockup_detected); /* init_one 2 */
9067 h->lockup_detected = NULL; /* init_one 2 */
9068 /* (void) pci_disable_pcie_error_reporting(pdev); */ /* init_one 1 */
9070 hpda_free_ctlr_info(h); /* init_one 1 */
9073 static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
9074 __attribute__((unused)) pm_message_t state)
9079 static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
9084 static struct pci_driver hpsa_pci_driver = {
9086 .probe = hpsa_init_one,
9087 .remove = hpsa_remove_one,
9088 .id_table = hpsa_pci_device_id, /* id_table */
9089 .shutdown = hpsa_shutdown,
9090 .suspend = hpsa_suspend,
9091 .resume = hpsa_resume,
9094 /* Fill in bucket_map[], given nsgs (the max number of
9095 * scatter gather elements supported) and bucket[],
9096 * which is an array of 8 integers. The bucket[] array
9097 * contains 8 different DMA transfer sizes (in 16
9098 * byte increments) which the controller uses to fetch
9099 * commands. This function fills in bucket_map[], which
9100 * maps a given number of scatter gather elements to one of
9101 * the 8 DMA transfer sizes. The point of it is to allow the
9102 * controller to only do as much DMA as needed to fetch the
9103 * command, with the DMA transfer size encoded in the lower
9104 * bits of the command address.
9106 static void calc_bucket_map(int bucket[], int num_buckets,
9107 int nsgs, int min_blocks, u32 *bucket_map)
9111 /* Note, bucket_map must have nsgs+1 entries. */
9112 for (i = 0; i <= nsgs; i++) {
9113 /* Compute size of a command with i SG entries */
9114 size = i + min_blocks;
9115 b = num_buckets; /* Assume the biggest bucket */
9116 /* Find the bucket that is just big enough */
9117 for (j = 0; j < num_buckets; j++) {
9118 if (bucket[j] >= size) {
9123 /* for a command with i SG entries, use bucket b. */
9129 * return -ENODEV on err, 0 on success (or no action)
9130 * allocates numerous items that must be freed later
9132 static int hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support)
9135 unsigned long register_value;
9136 unsigned long transMethod = CFGTBL_Trans_Performant |
9137 (trans_support & CFGTBL_Trans_use_short_tags) |
9138 CFGTBL_Trans_enable_directed_msix |
9139 (trans_support & (CFGTBL_Trans_io_accel1 |
9140 CFGTBL_Trans_io_accel2));
9141 struct access_method access = SA5_performant_access;
9143 /* This is a bit complicated. There are 8 registers on
9144 * the controller which we write to to tell it 8 different
9145 * sizes of commands which there may be. It's a way of
9146 * reducing the DMA done to fetch each command. Encoded into
9147 * each command's tag are 3 bits which communicate to the controller
9148 * which of the eight sizes that command fits within. The size of
9149 * each command depends on how many scatter gather entries there are.
9150 * Each SG entry requires 16 bytes. The eight registers are programmed
9151 * with the number of 16-byte blocks a command of that size requires.
9152 * The smallest command possible requires 5 such 16 byte blocks.
9153 * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte
9154 * blocks. Note, this only extends to the SG entries contained
9155 * within the command block, and does not extend to chained blocks
9156 * of SG elements. bft[] contains the eight values we write to
9157 * the registers. They are not evenly distributed, but have more
9158 * sizes for small commands, and fewer sizes for larger commands.
9160 int bft[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD + 4};
9161 #define MIN_IOACCEL2_BFT_ENTRY 5
9162 #define HPSA_IOACCEL2_HEADER_SZ 4
9163 int bft2[16] = {MIN_IOACCEL2_BFT_ENTRY, 6, 7, 8, 9, 10, 11, 12,
9164 13, 14, 15, 16, 17, 18, 19,
9165 HPSA_IOACCEL2_HEADER_SZ + IOACCEL2_MAXSGENTRIES};
9166 BUILD_BUG_ON(ARRAY_SIZE(bft2) != 16);
9167 BUILD_BUG_ON(ARRAY_SIZE(bft) != 8);
9168 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) >
9169 16 * MIN_IOACCEL2_BFT_ENTRY);
9170 BUILD_BUG_ON(sizeof(struct ioaccel2_sg_element) != 16);
9171 BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD + 4);
9172 /* 5 = 1 s/g entry or 4k
9173 * 6 = 2 s/g entry or 8k
9174 * 8 = 4 s/g entry or 16k
9175 * 10 = 6 s/g entry or 24k
9178 /* If the controller supports either ioaccel method then
9179 * we can also use the RAID stack submit path that does not
9180 * perform the superfluous readl() after each command submission.
9182 if (trans_support & (CFGTBL_Trans_io_accel1 | CFGTBL_Trans_io_accel2))
9183 access = SA5_performant_access_no_read;
9185 /* Controller spec: zero out this buffer. */
9186 for (i = 0; i < h->nreply_queues; i++)
9187 memset(h->reply_queue[i].head, 0, h->reply_queue_size);
9189 bft[7] = SG_ENTRIES_IN_CMD + 4;
9190 calc_bucket_map(bft, ARRAY_SIZE(bft),
9191 SG_ENTRIES_IN_CMD, 4, h->blockFetchTable);
9192 for (i = 0; i < 8; i++)
9193 writel(bft[i], &h->transtable->BlockFetch[i]);
9195 /* size of controller ring buffer */
9196 writel(h->max_commands, &h->transtable->RepQSize);
9197 writel(h->nreply_queues, &h->transtable->RepQCount);
9198 writel(0, &h->transtable->RepQCtrAddrLow32);
9199 writel(0, &h->transtable->RepQCtrAddrHigh32);
9201 for (i = 0; i < h->nreply_queues; i++) {
9202 writel(0, &h->transtable->RepQAddr[i].upper);
9203 writel(h->reply_queue[i].busaddr,
9204 &h->transtable->RepQAddr[i].lower);
9207 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
9208 writel(transMethod, &(h->cfgtable->HostWrite.TransportRequest));
9210 * enable outbound interrupt coalescing in accelerator mode;
9212 if (trans_support & CFGTBL_Trans_io_accel1) {
9213 access = SA5_ioaccel_mode1_access;
9214 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
9215 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
9217 if (trans_support & CFGTBL_Trans_io_accel2)
9218 access = SA5_ioaccel_mode2_access;
9219 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
9220 if (hpsa_wait_for_mode_change_ack(h)) {
9221 dev_err(&h->pdev->dev,
9222 "performant mode problem - doorbell timeout\n");
9225 register_value = readl(&(h->cfgtable->TransportActive));
9226 if (!(register_value & CFGTBL_Trans_Performant)) {
9227 dev_err(&h->pdev->dev,
9228 "performant mode problem - transport not active\n");
9231 /* Change the access methods to the performant access methods */
9233 h->transMethod = transMethod;
9235 if (!((trans_support & CFGTBL_Trans_io_accel1) ||
9236 (trans_support & CFGTBL_Trans_io_accel2)))
9239 if (trans_support & CFGTBL_Trans_io_accel1) {
9240 /* Set up I/O accelerator mode */
9241 for (i = 0; i < h->nreply_queues; i++) {
9242 writel(i, h->vaddr + IOACCEL_MODE1_REPLY_QUEUE_INDEX);
9243 h->reply_queue[i].current_entry =
9244 readl(h->vaddr + IOACCEL_MODE1_PRODUCER_INDEX);
9246 bft[7] = h->ioaccel_maxsg + 8;
9247 calc_bucket_map(bft, ARRAY_SIZE(bft), h->ioaccel_maxsg, 8,
9248 h->ioaccel1_blockFetchTable);
9250 /* initialize all reply queue entries to unused */
9251 for (i = 0; i < h->nreply_queues; i++)
9252 memset(h->reply_queue[i].head,
9253 (u8) IOACCEL_MODE1_REPLY_UNUSED,
9254 h->reply_queue_size);
9256 /* set all the constant fields in the accelerator command
9257 * frames once at init time to save CPU cycles later.
9259 for (i = 0; i < h->nr_cmds; i++) {
9260 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[i];
9262 cp->function = IOACCEL1_FUNCTION_SCSIIO;
9263 cp->err_info = (u32) (h->errinfo_pool_dhandle +
9264 (i * sizeof(struct ErrorInfo)));
9265 cp->err_info_len = sizeof(struct ErrorInfo);
9266 cp->sgl_offset = IOACCEL1_SGLOFFSET;
9267 cp->host_context_flags =
9268 cpu_to_le16(IOACCEL1_HCFLAGS_CISS_FORMAT);
9269 cp->timeout_sec = 0;
9272 cpu_to_le64((i << DIRECT_LOOKUP_SHIFT));
9274 cpu_to_le64(h->ioaccel_cmd_pool_dhandle +
9275 (i * sizeof(struct io_accel1_cmd)));
9277 } else if (trans_support & CFGTBL_Trans_io_accel2) {
9278 u64 cfg_offset, cfg_base_addr_index;
9279 u32 bft2_offset, cfg_base_addr;
9282 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
9283 &cfg_base_addr_index, &cfg_offset);
9284 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) != 64);
9285 bft2[15] = h->ioaccel_maxsg + HPSA_IOACCEL2_HEADER_SZ;
9286 calc_bucket_map(bft2, ARRAY_SIZE(bft2), h->ioaccel_maxsg,
9287 4, h->ioaccel2_blockFetchTable);
9288 bft2_offset = readl(&h->cfgtable->io_accel_request_size_offset);
9289 BUILD_BUG_ON(offsetof(struct CfgTable,
9290 io_accel_request_size_offset) != 0xb8);
9291 h->ioaccel2_bft2_regs =
9292 remap_pci_mem(pci_resource_start(h->pdev,
9293 cfg_base_addr_index) +
9294 cfg_offset + bft2_offset,
9296 sizeof(*h->ioaccel2_bft2_regs));
9297 for (i = 0; i < ARRAY_SIZE(bft2); i++)
9298 writel(bft2[i], &h->ioaccel2_bft2_regs[i]);
9300 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
9301 if (hpsa_wait_for_mode_change_ack(h)) {
9302 dev_err(&h->pdev->dev,
9303 "performant mode problem - enabling ioaccel mode\n");
9309 /* Free ioaccel1 mode command blocks and block fetch table */
9310 static void hpsa_free_ioaccel1_cmd_and_bft(struct ctlr_info *h)
9312 if (h->ioaccel_cmd_pool) {
9313 pci_free_consistent(h->pdev,
9314 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
9315 h->ioaccel_cmd_pool,
9316 h->ioaccel_cmd_pool_dhandle);
9317 h->ioaccel_cmd_pool = NULL;
9318 h->ioaccel_cmd_pool_dhandle = 0;
9320 kfree(h->ioaccel1_blockFetchTable);
9321 h->ioaccel1_blockFetchTable = NULL;
9324 /* Allocate ioaccel1 mode command blocks and block fetch table */
9325 static int hpsa_alloc_ioaccel1_cmd_and_bft(struct ctlr_info *h)
9328 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
9329 if (h->ioaccel_maxsg > IOACCEL1_MAXSGENTRIES)
9330 h->ioaccel_maxsg = IOACCEL1_MAXSGENTRIES;
9332 /* Command structures must be aligned on a 128-byte boundary
9333 * because the 7 lower bits of the address are used by the
9336 BUILD_BUG_ON(sizeof(struct io_accel1_cmd) %
9337 IOACCEL1_COMMANDLIST_ALIGNMENT);
9338 h->ioaccel_cmd_pool =
9339 dma_alloc_coherent(&h->pdev->dev,
9340 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
9341 &h->ioaccel_cmd_pool_dhandle, GFP_KERNEL);
9343 h->ioaccel1_blockFetchTable =
9344 kmalloc(((h->ioaccel_maxsg + 1) *
9345 sizeof(u32)), GFP_KERNEL);
9347 if ((h->ioaccel_cmd_pool == NULL) ||
9348 (h->ioaccel1_blockFetchTable == NULL))
9351 memset(h->ioaccel_cmd_pool, 0,
9352 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool));
9356 hpsa_free_ioaccel1_cmd_and_bft(h);
9360 /* Free ioaccel2 mode command blocks and block fetch table */
9361 static void hpsa_free_ioaccel2_cmd_and_bft(struct ctlr_info *h)
9363 hpsa_free_ioaccel2_sg_chain_blocks(h);
9365 if (h->ioaccel2_cmd_pool) {
9366 pci_free_consistent(h->pdev,
9367 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
9368 h->ioaccel2_cmd_pool,
9369 h->ioaccel2_cmd_pool_dhandle);
9370 h->ioaccel2_cmd_pool = NULL;
9371 h->ioaccel2_cmd_pool_dhandle = 0;
9373 kfree(h->ioaccel2_blockFetchTable);
9374 h->ioaccel2_blockFetchTable = NULL;
9377 /* Allocate ioaccel2 mode command blocks and block fetch table */
9378 static int hpsa_alloc_ioaccel2_cmd_and_bft(struct ctlr_info *h)
9382 /* Allocate ioaccel2 mode command blocks and block fetch table */
9385 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
9386 if (h->ioaccel_maxsg > IOACCEL2_MAXSGENTRIES)
9387 h->ioaccel_maxsg = IOACCEL2_MAXSGENTRIES;
9389 BUILD_BUG_ON(sizeof(struct io_accel2_cmd) %
9390 IOACCEL2_COMMANDLIST_ALIGNMENT);
9391 h->ioaccel2_cmd_pool =
9392 dma_alloc_coherent(&h->pdev->dev,
9393 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
9394 &h->ioaccel2_cmd_pool_dhandle, GFP_KERNEL);
9396 h->ioaccel2_blockFetchTable =
9397 kmalloc(((h->ioaccel_maxsg + 1) *
9398 sizeof(u32)), GFP_KERNEL);
9400 if ((h->ioaccel2_cmd_pool == NULL) ||
9401 (h->ioaccel2_blockFetchTable == NULL)) {
9406 rc = hpsa_allocate_ioaccel2_sg_chain_blocks(h);
9410 memset(h->ioaccel2_cmd_pool, 0,
9411 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool));
9415 hpsa_free_ioaccel2_cmd_and_bft(h);
9419 /* Free items allocated by hpsa_put_ctlr_into_performant_mode */
9420 static void hpsa_free_performant_mode(struct ctlr_info *h)
9422 kfree(h->blockFetchTable);
9423 h->blockFetchTable = NULL;
9424 hpsa_free_reply_queues(h);
9425 hpsa_free_ioaccel1_cmd_and_bft(h);
9426 hpsa_free_ioaccel2_cmd_and_bft(h);
9429 /* return -ENODEV on error, 0 on success (or no action)
9430 * allocates numerous items that must be freed later
9432 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
9435 unsigned long transMethod = CFGTBL_Trans_Performant |
9436 CFGTBL_Trans_use_short_tags;
9439 if (hpsa_simple_mode)
9442 trans_support = readl(&(h->cfgtable->TransportSupport));
9443 if (!(trans_support & PERFORMANT_MODE))
9446 /* Check for I/O accelerator mode support */
9447 if (trans_support & CFGTBL_Trans_io_accel1) {
9448 transMethod |= CFGTBL_Trans_io_accel1 |
9449 CFGTBL_Trans_enable_directed_msix;
9450 rc = hpsa_alloc_ioaccel1_cmd_and_bft(h);
9453 } else if (trans_support & CFGTBL_Trans_io_accel2) {
9454 transMethod |= CFGTBL_Trans_io_accel2 |
9455 CFGTBL_Trans_enable_directed_msix;
9456 rc = hpsa_alloc_ioaccel2_cmd_and_bft(h);
9461 h->nreply_queues = h->msix_vectors > 0 ? h->msix_vectors : 1;
9462 hpsa_get_max_perf_mode_cmds(h);
9463 /* Performant mode ring buffer and supporting data structures */
9464 h->reply_queue_size = h->max_commands * sizeof(u64);
9466 for (i = 0; i < h->nreply_queues; i++) {
9467 h->reply_queue[i].head = dma_alloc_coherent(&h->pdev->dev,
9468 h->reply_queue_size,
9469 &h->reply_queue[i].busaddr,
9471 if (!h->reply_queue[i].head) {
9473 goto clean1; /* rq, ioaccel */
9475 h->reply_queue[i].size = h->max_commands;
9476 h->reply_queue[i].wraparound = 1; /* spec: init to 1 */
9477 h->reply_queue[i].current_entry = 0;
9480 /* Need a block fetch table for performant mode */
9481 h->blockFetchTable = kmalloc(((SG_ENTRIES_IN_CMD + 1) *
9482 sizeof(u32)), GFP_KERNEL);
9483 if (!h->blockFetchTable) {
9485 goto clean1; /* rq, ioaccel */
9488 rc = hpsa_enter_performant_mode(h, trans_support);
9490 goto clean2; /* bft, rq, ioaccel */
9493 clean2: /* bft, rq, ioaccel */
9494 kfree(h->blockFetchTable);
9495 h->blockFetchTable = NULL;
9496 clean1: /* rq, ioaccel */
9497 hpsa_free_reply_queues(h);
9498 hpsa_free_ioaccel1_cmd_and_bft(h);
9499 hpsa_free_ioaccel2_cmd_and_bft(h);
9503 static int is_accelerated_cmd(struct CommandList *c)
9505 return c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_IOACCEL2;
9508 static void hpsa_drain_accel_commands(struct ctlr_info *h)
9510 struct CommandList *c = NULL;
9511 int i, accel_cmds_out;
9514 do { /* wait for all outstanding ioaccel commands to drain out */
9516 for (i = 0; i < h->nr_cmds; i++) {
9517 c = h->cmd_pool + i;
9518 refcount = atomic_inc_return(&c->refcount);
9519 if (refcount > 1) /* Command is allocated */
9520 accel_cmds_out += is_accelerated_cmd(c);
9523 if (accel_cmds_out <= 0)
9529 static struct hpsa_sas_phy *hpsa_alloc_sas_phy(
9530 struct hpsa_sas_port *hpsa_sas_port)
9532 struct hpsa_sas_phy *hpsa_sas_phy;
9533 struct sas_phy *phy;
9535 hpsa_sas_phy = kzalloc(sizeof(*hpsa_sas_phy), GFP_KERNEL);
9539 phy = sas_phy_alloc(hpsa_sas_port->parent_node->parent_dev,
9540 hpsa_sas_port->next_phy_index);
9542 kfree(hpsa_sas_phy);
9546 hpsa_sas_port->next_phy_index++;
9547 hpsa_sas_phy->phy = phy;
9548 hpsa_sas_phy->parent_port = hpsa_sas_port;
9550 return hpsa_sas_phy;
9553 static void hpsa_free_sas_phy(struct hpsa_sas_phy *hpsa_sas_phy)
9555 struct sas_phy *phy = hpsa_sas_phy->phy;
9557 sas_port_delete_phy(hpsa_sas_phy->parent_port->port, phy);
9558 if (hpsa_sas_phy->added_to_port)
9559 list_del(&hpsa_sas_phy->phy_list_entry);
9560 sas_phy_delete(phy);
9561 kfree(hpsa_sas_phy);
9564 static int hpsa_sas_port_add_phy(struct hpsa_sas_phy *hpsa_sas_phy)
9567 struct hpsa_sas_port *hpsa_sas_port;
9568 struct sas_phy *phy;
9569 struct sas_identify *identify;
9571 hpsa_sas_port = hpsa_sas_phy->parent_port;
9572 phy = hpsa_sas_phy->phy;
9574 identify = &phy->identify;
9575 memset(identify, 0, sizeof(*identify));
9576 identify->sas_address = hpsa_sas_port->sas_address;
9577 identify->device_type = SAS_END_DEVICE;
9578 identify->initiator_port_protocols = SAS_PROTOCOL_STP;
9579 identify->target_port_protocols = SAS_PROTOCOL_STP;
9580 phy->minimum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
9581 phy->maximum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
9582 phy->minimum_linkrate = SAS_LINK_RATE_UNKNOWN;
9583 phy->maximum_linkrate = SAS_LINK_RATE_UNKNOWN;
9584 phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
9586 rc = sas_phy_add(hpsa_sas_phy->phy);
9590 sas_port_add_phy(hpsa_sas_port->port, hpsa_sas_phy->phy);
9591 list_add_tail(&hpsa_sas_phy->phy_list_entry,
9592 &hpsa_sas_port->phy_list_head);
9593 hpsa_sas_phy->added_to_port = true;
9599 hpsa_sas_port_add_rphy(struct hpsa_sas_port *hpsa_sas_port,
9600 struct sas_rphy *rphy)
9602 struct sas_identify *identify;
9604 identify = &rphy->identify;
9605 identify->sas_address = hpsa_sas_port->sas_address;
9606 identify->initiator_port_protocols = SAS_PROTOCOL_STP;
9607 identify->target_port_protocols = SAS_PROTOCOL_STP;
9609 return sas_rphy_add(rphy);
9612 static struct hpsa_sas_port
9613 *hpsa_alloc_sas_port(struct hpsa_sas_node *hpsa_sas_node,
9617 struct hpsa_sas_port *hpsa_sas_port;
9618 struct sas_port *port;
9620 hpsa_sas_port = kzalloc(sizeof(*hpsa_sas_port), GFP_KERNEL);
9624 INIT_LIST_HEAD(&hpsa_sas_port->phy_list_head);
9625 hpsa_sas_port->parent_node = hpsa_sas_node;
9627 port = sas_port_alloc_num(hpsa_sas_node->parent_dev);
9629 goto free_hpsa_port;
9631 rc = sas_port_add(port);
9635 hpsa_sas_port->port = port;
9636 hpsa_sas_port->sas_address = sas_address;
9637 list_add_tail(&hpsa_sas_port->port_list_entry,
9638 &hpsa_sas_node->port_list_head);
9640 return hpsa_sas_port;
9643 sas_port_free(port);
9645 kfree(hpsa_sas_port);
9650 static void hpsa_free_sas_port(struct hpsa_sas_port *hpsa_sas_port)
9652 struct hpsa_sas_phy *hpsa_sas_phy;
9653 struct hpsa_sas_phy *next;
9655 list_for_each_entry_safe(hpsa_sas_phy, next,
9656 &hpsa_sas_port->phy_list_head, phy_list_entry)
9657 hpsa_free_sas_phy(hpsa_sas_phy);
9659 sas_port_delete(hpsa_sas_port->port);
9660 list_del(&hpsa_sas_port->port_list_entry);
9661 kfree(hpsa_sas_port);
9664 static struct hpsa_sas_node *hpsa_alloc_sas_node(struct device *parent_dev)
9666 struct hpsa_sas_node *hpsa_sas_node;
9668 hpsa_sas_node = kzalloc(sizeof(*hpsa_sas_node), GFP_KERNEL);
9669 if (hpsa_sas_node) {
9670 hpsa_sas_node->parent_dev = parent_dev;
9671 INIT_LIST_HEAD(&hpsa_sas_node->port_list_head);
9674 return hpsa_sas_node;
9677 static void hpsa_free_sas_node(struct hpsa_sas_node *hpsa_sas_node)
9679 struct hpsa_sas_port *hpsa_sas_port;
9680 struct hpsa_sas_port *next;
9685 list_for_each_entry_safe(hpsa_sas_port, next,
9686 &hpsa_sas_node->port_list_head, port_list_entry)
9687 hpsa_free_sas_port(hpsa_sas_port);
9689 kfree(hpsa_sas_node);
9692 static struct hpsa_scsi_dev_t
9693 *hpsa_find_device_by_sas_rphy(struct ctlr_info *h,
9694 struct sas_rphy *rphy)
9697 struct hpsa_scsi_dev_t *device;
9699 for (i = 0; i < h->ndevices; i++) {
9701 if (!device->sas_port)
9703 if (device->sas_port->rphy == rphy)
9710 static int hpsa_add_sas_host(struct ctlr_info *h)
9713 struct device *parent_dev;
9714 struct hpsa_sas_node *hpsa_sas_node;
9715 struct hpsa_sas_port *hpsa_sas_port;
9716 struct hpsa_sas_phy *hpsa_sas_phy;
9718 parent_dev = &h->scsi_host->shost_dev;
9720 hpsa_sas_node = hpsa_alloc_sas_node(parent_dev);
9724 hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, h->sas_address);
9725 if (!hpsa_sas_port) {
9730 hpsa_sas_phy = hpsa_alloc_sas_phy(hpsa_sas_port);
9731 if (!hpsa_sas_phy) {
9736 rc = hpsa_sas_port_add_phy(hpsa_sas_phy);
9740 h->sas_host = hpsa_sas_node;
9745 hpsa_free_sas_phy(hpsa_sas_phy);
9747 hpsa_free_sas_port(hpsa_sas_port);
9749 hpsa_free_sas_node(hpsa_sas_node);
9754 static void hpsa_delete_sas_host(struct ctlr_info *h)
9756 hpsa_free_sas_node(h->sas_host);
9759 static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node,
9760 struct hpsa_scsi_dev_t *device)
9763 struct hpsa_sas_port *hpsa_sas_port;
9764 struct sas_rphy *rphy;
9766 hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, device->sas_address);
9770 rphy = sas_end_device_alloc(hpsa_sas_port->port);
9776 hpsa_sas_port->rphy = rphy;
9777 device->sas_port = hpsa_sas_port;
9779 rc = hpsa_sas_port_add_rphy(hpsa_sas_port, rphy);
9786 hpsa_free_sas_port(hpsa_sas_port);
9787 device->sas_port = NULL;
9792 static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device)
9794 if (device->sas_port) {
9795 hpsa_free_sas_port(device->sas_port);
9796 device->sas_port = NULL;
9801 hpsa_sas_get_linkerrors(struct sas_phy *phy)
9807 hpsa_sas_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
9809 struct Scsi_Host *shost = phy_to_shost(rphy);
9810 struct ctlr_info *h;
9811 struct hpsa_scsi_dev_t *sd;
9816 h = shost_to_hba(shost);
9821 sd = hpsa_find_device_by_sas_rphy(h, rphy);
9825 *identifier = sd->eli;
9831 hpsa_sas_get_bay_identifier(struct sas_rphy *rphy)
9837 hpsa_sas_phy_reset(struct sas_phy *phy, int hard_reset)
9843 hpsa_sas_phy_enable(struct sas_phy *phy, int enable)
9849 hpsa_sas_phy_setup(struct sas_phy *phy)
9855 hpsa_sas_phy_release(struct sas_phy *phy)
9860 hpsa_sas_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
9865 static struct sas_function_template hpsa_sas_transport_functions = {
9866 .get_linkerrors = hpsa_sas_get_linkerrors,
9867 .get_enclosure_identifier = hpsa_sas_get_enclosure_identifier,
9868 .get_bay_identifier = hpsa_sas_get_bay_identifier,
9869 .phy_reset = hpsa_sas_phy_reset,
9870 .phy_enable = hpsa_sas_phy_enable,
9871 .phy_setup = hpsa_sas_phy_setup,
9872 .phy_release = hpsa_sas_phy_release,
9873 .set_phy_speed = hpsa_sas_phy_speed,
9877 * This is it. Register the PCI driver information for the cards we control
9878 * the OS will call our registered routines when it finds one of our cards.
9880 static int __init hpsa_init(void)
9884 hpsa_sas_transport_template =
9885 sas_attach_transport(&hpsa_sas_transport_functions);
9886 if (!hpsa_sas_transport_template)
9889 rc = pci_register_driver(&hpsa_pci_driver);
9892 sas_release_transport(hpsa_sas_transport_template);
9897 static void __exit hpsa_cleanup(void)
9899 pci_unregister_driver(&hpsa_pci_driver);
9900 sas_release_transport(hpsa_sas_transport_template);
9903 static void __attribute__((unused)) verify_offsets(void)
9905 #define VERIFY_OFFSET(member, offset) \
9906 BUILD_BUG_ON(offsetof(struct raid_map_data, member) != offset)
9908 VERIFY_OFFSET(structure_size, 0);
9909 VERIFY_OFFSET(volume_blk_size, 4);
9910 VERIFY_OFFSET(volume_blk_cnt, 8);
9911 VERIFY_OFFSET(phys_blk_shift, 16);
9912 VERIFY_OFFSET(parity_rotation_shift, 17);
9913 VERIFY_OFFSET(strip_size, 18);
9914 VERIFY_OFFSET(disk_starting_blk, 20);
9915 VERIFY_OFFSET(disk_blk_cnt, 28);
9916 VERIFY_OFFSET(data_disks_per_row, 36);
9917 VERIFY_OFFSET(metadata_disks_per_row, 38);
9918 VERIFY_OFFSET(row_cnt, 40);
9919 VERIFY_OFFSET(layout_map_count, 42);
9920 VERIFY_OFFSET(flags, 44);
9921 VERIFY_OFFSET(dekindex, 46);
9922 /* VERIFY_OFFSET(reserved, 48 */
9923 VERIFY_OFFSET(data, 64);
9925 #undef VERIFY_OFFSET
9927 #define VERIFY_OFFSET(member, offset) \
9928 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, member) != offset)
9930 VERIFY_OFFSET(IU_type, 0);
9931 VERIFY_OFFSET(direction, 1);
9932 VERIFY_OFFSET(reply_queue, 2);
9933 /* VERIFY_OFFSET(reserved1, 3); */
9934 VERIFY_OFFSET(scsi_nexus, 4);
9935 VERIFY_OFFSET(Tag, 8);
9936 VERIFY_OFFSET(cdb, 16);
9937 VERIFY_OFFSET(cciss_lun, 32);
9938 VERIFY_OFFSET(data_len, 40);
9939 VERIFY_OFFSET(cmd_priority_task_attr, 44);
9940 VERIFY_OFFSET(sg_count, 45);
9941 /* VERIFY_OFFSET(reserved3 */
9942 VERIFY_OFFSET(err_ptr, 48);
9943 VERIFY_OFFSET(err_len, 56);
9944 /* VERIFY_OFFSET(reserved4 */
9945 VERIFY_OFFSET(sg, 64);
9947 #undef VERIFY_OFFSET
9949 #define VERIFY_OFFSET(member, offset) \
9950 BUILD_BUG_ON(offsetof(struct io_accel1_cmd, member) != offset)
9952 VERIFY_OFFSET(dev_handle, 0x00);
9953 VERIFY_OFFSET(reserved1, 0x02);
9954 VERIFY_OFFSET(function, 0x03);
9955 VERIFY_OFFSET(reserved2, 0x04);
9956 VERIFY_OFFSET(err_info, 0x0C);
9957 VERIFY_OFFSET(reserved3, 0x10);
9958 VERIFY_OFFSET(err_info_len, 0x12);
9959 VERIFY_OFFSET(reserved4, 0x13);
9960 VERIFY_OFFSET(sgl_offset, 0x14);
9961 VERIFY_OFFSET(reserved5, 0x15);
9962 VERIFY_OFFSET(transfer_len, 0x1C);
9963 VERIFY_OFFSET(reserved6, 0x20);
9964 VERIFY_OFFSET(io_flags, 0x24);
9965 VERIFY_OFFSET(reserved7, 0x26);
9966 VERIFY_OFFSET(LUN, 0x34);
9967 VERIFY_OFFSET(control, 0x3C);
9968 VERIFY_OFFSET(CDB, 0x40);
9969 VERIFY_OFFSET(reserved8, 0x50);
9970 VERIFY_OFFSET(host_context_flags, 0x60);
9971 VERIFY_OFFSET(timeout_sec, 0x62);
9972 VERIFY_OFFSET(ReplyQueue, 0x64);
9973 VERIFY_OFFSET(reserved9, 0x65);
9974 VERIFY_OFFSET(tag, 0x68);
9975 VERIFY_OFFSET(host_addr, 0x70);
9976 VERIFY_OFFSET(CISS_LUN, 0x78);
9977 VERIFY_OFFSET(SG, 0x78 + 8);
9978 #undef VERIFY_OFFSET
9981 module_init(hpsa_init);
9982 module_exit(hpsa_cleanup);