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,
259 static int hpsa_compat_ioctl(struct scsi_device *dev, unsigned int cmd,
263 static void cmd_free(struct ctlr_info *h, struct CommandList *c);
264 static struct CommandList *cmd_alloc(struct ctlr_info *h);
265 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c);
266 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
267 struct scsi_cmnd *scmd);
268 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
269 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
271 static void hpsa_free_cmd_pool(struct ctlr_info *h);
272 #define VPD_PAGE (1 << 8)
273 #define HPSA_SIMPLE_ERROR_BITS 0x03
275 static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
276 static void hpsa_scan_start(struct Scsi_Host *);
277 static int hpsa_scan_finished(struct Scsi_Host *sh,
278 unsigned long elapsed_time);
279 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth);
281 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd);
282 static int hpsa_slave_alloc(struct scsi_device *sdev);
283 static int hpsa_slave_configure(struct scsi_device *sdev);
284 static void hpsa_slave_destroy(struct scsi_device *sdev);
286 static void hpsa_update_scsi_devices(struct ctlr_info *h);
287 static int check_for_unit_attention(struct ctlr_info *h,
288 struct CommandList *c);
289 static void check_ioctl_unit_attention(struct ctlr_info *h,
290 struct CommandList *c);
291 /* performant mode helper functions */
292 static void calc_bucket_map(int *bucket, int num_buckets,
293 int nsgs, int min_blocks, u32 *bucket_map);
294 static void hpsa_free_performant_mode(struct ctlr_info *h);
295 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h);
296 static inline u32 next_command(struct ctlr_info *h, u8 q);
297 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
298 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
300 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
301 unsigned long *memory_bar);
302 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id,
304 static int wait_for_device_to_become_ready(struct ctlr_info *h,
305 unsigned char lunaddr[],
307 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
309 static inline void finish_cmd(struct CommandList *c);
310 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h);
311 #define BOARD_NOT_READY 0
312 #define BOARD_READY 1
313 static void hpsa_drain_accel_commands(struct ctlr_info *h);
314 static void hpsa_flush_cache(struct ctlr_info *h);
315 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
316 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
317 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk);
318 static void hpsa_command_resubmit_worker(struct work_struct *work);
319 static u32 lockup_detected(struct ctlr_info *h);
320 static int detect_controller_lockup(struct ctlr_info *h);
321 static void hpsa_disable_rld_caching(struct ctlr_info *h);
322 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
323 struct ReportExtendedLUNdata *buf, int bufsize);
324 static bool hpsa_vpd_page_supported(struct ctlr_info *h,
325 unsigned char scsi3addr[], u8 page);
326 static int hpsa_luns_changed(struct ctlr_info *h);
327 static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c,
328 struct hpsa_scsi_dev_t *dev,
329 unsigned char *scsi3addr);
331 static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
333 unsigned long *priv = shost_priv(sdev->host);
334 return (struct ctlr_info *) *priv;
337 static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh)
339 unsigned long *priv = shost_priv(sh);
340 return (struct ctlr_info *) *priv;
343 static inline bool hpsa_is_cmd_idle(struct CommandList *c)
345 return c->scsi_cmd == SCSI_CMD_IDLE;
348 /* extract sense key, asc, and ascq from sense data. -1 means invalid. */
349 static void decode_sense_data(const u8 *sense_data, int sense_data_len,
350 u8 *sense_key, u8 *asc, u8 *ascq)
352 struct scsi_sense_hdr sshdr;
359 if (sense_data_len < 1)
362 rc = scsi_normalize_sense(sense_data, sense_data_len, &sshdr);
364 *sense_key = sshdr.sense_key;
370 static int check_for_unit_attention(struct ctlr_info *h,
371 struct CommandList *c)
373 u8 sense_key, asc, ascq;
376 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
377 sense_len = sizeof(c->err_info->SenseInfo);
379 sense_len = c->err_info->SenseLen;
381 decode_sense_data(c->err_info->SenseInfo, sense_len,
382 &sense_key, &asc, &ascq);
383 if (sense_key != UNIT_ATTENTION || asc == 0xff)
388 dev_warn(&h->pdev->dev,
389 "%s: a state change detected, command retried\n",
393 dev_warn(&h->pdev->dev,
394 "%s: LUN failure detected\n", h->devname);
396 case REPORT_LUNS_CHANGED:
397 dev_warn(&h->pdev->dev,
398 "%s: report LUN data changed\n", h->devname);
400 * Note: this REPORT_LUNS_CHANGED condition only occurs on the external
401 * target (array) devices.
405 dev_warn(&h->pdev->dev,
406 "%s: a power on or device reset detected\n",
409 case UNIT_ATTENTION_CLEARED:
410 dev_warn(&h->pdev->dev,
411 "%s: unit attention cleared by another initiator\n",
415 dev_warn(&h->pdev->dev,
416 "%s: unknown unit attention detected\n",
423 static int check_for_busy(struct ctlr_info *h, struct CommandList *c)
425 if (c->err_info->CommandStatus != CMD_TARGET_STATUS ||
426 (c->err_info->ScsiStatus != SAM_STAT_BUSY &&
427 c->err_info->ScsiStatus != SAM_STAT_TASK_SET_FULL))
429 dev_warn(&h->pdev->dev, HPSA "device busy");
433 static u32 lockup_detected(struct ctlr_info *h);
434 static ssize_t host_show_lockup_detected(struct device *dev,
435 struct device_attribute *attr, char *buf)
439 struct Scsi_Host *shost = class_to_shost(dev);
441 h = shost_to_hba(shost);
442 ld = lockup_detected(h);
444 return sprintf(buf, "ld=%d\n", ld);
447 static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev,
448 struct device_attribute *attr,
449 const char *buf, size_t count)
453 struct Scsi_Host *shost = class_to_shost(dev);
456 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
458 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
459 strncpy(tmpbuf, buf, len);
461 if (sscanf(tmpbuf, "%d", &status) != 1)
463 h = shost_to_hba(shost);
464 h->acciopath_status = !!status;
465 dev_warn(&h->pdev->dev,
466 "hpsa: HP SSD Smart Path %s via sysfs update.\n",
467 h->acciopath_status ? "enabled" : "disabled");
471 static ssize_t host_store_raid_offload_debug(struct device *dev,
472 struct device_attribute *attr,
473 const char *buf, size_t count)
475 int debug_level, len;
477 struct Scsi_Host *shost = class_to_shost(dev);
480 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
482 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
483 strncpy(tmpbuf, buf, len);
485 if (sscanf(tmpbuf, "%d", &debug_level) != 1)
489 h = shost_to_hba(shost);
490 h->raid_offload_debug = debug_level;
491 dev_warn(&h->pdev->dev, "hpsa: Set raid_offload_debug level = %d\n",
492 h->raid_offload_debug);
496 static ssize_t host_store_rescan(struct device *dev,
497 struct device_attribute *attr,
498 const char *buf, size_t count)
501 struct Scsi_Host *shost = class_to_shost(dev);
502 h = shost_to_hba(shost);
503 hpsa_scan_start(h->scsi_host);
507 static ssize_t host_show_firmware_revision(struct device *dev,
508 struct device_attribute *attr, char *buf)
511 struct Scsi_Host *shost = class_to_shost(dev);
512 unsigned char *fwrev;
514 h = shost_to_hba(shost);
515 if (!h->hba_inquiry_data)
517 fwrev = &h->hba_inquiry_data[32];
518 return snprintf(buf, 20, "%c%c%c%c\n",
519 fwrev[0], fwrev[1], fwrev[2], fwrev[3]);
522 static ssize_t host_show_commands_outstanding(struct device *dev,
523 struct device_attribute *attr, char *buf)
525 struct Scsi_Host *shost = class_to_shost(dev);
526 struct ctlr_info *h = shost_to_hba(shost);
528 return snprintf(buf, 20, "%d\n",
529 atomic_read(&h->commands_outstanding));
532 static ssize_t host_show_transport_mode(struct device *dev,
533 struct device_attribute *attr, char *buf)
536 struct Scsi_Host *shost = class_to_shost(dev);
538 h = shost_to_hba(shost);
539 return snprintf(buf, 20, "%s\n",
540 h->transMethod & CFGTBL_Trans_Performant ?
541 "performant" : "simple");
544 static ssize_t host_show_hp_ssd_smart_path_status(struct device *dev,
545 struct device_attribute *attr, char *buf)
548 struct Scsi_Host *shost = class_to_shost(dev);
550 h = shost_to_hba(shost);
551 return snprintf(buf, 30, "HP SSD Smart Path %s\n",
552 (h->acciopath_status == 1) ? "enabled" : "disabled");
555 /* List of controllers which cannot be hard reset on kexec with reset_devices */
556 static u32 unresettable_controller[] = {
557 0x324a103C, /* Smart Array P712m */
558 0x324b103C, /* Smart Array P711m */
559 0x3223103C, /* Smart Array P800 */
560 0x3234103C, /* Smart Array P400 */
561 0x3235103C, /* Smart Array P400i */
562 0x3211103C, /* Smart Array E200i */
563 0x3212103C, /* Smart Array E200 */
564 0x3213103C, /* Smart Array E200i */
565 0x3214103C, /* Smart Array E200i */
566 0x3215103C, /* Smart Array E200i */
567 0x3237103C, /* Smart Array E500 */
568 0x323D103C, /* Smart Array P700m */
569 0x40800E11, /* Smart Array 5i */
570 0x409C0E11, /* Smart Array 6400 */
571 0x409D0E11, /* Smart Array 6400 EM */
572 0x40700E11, /* Smart Array 5300 */
573 0x40820E11, /* Smart Array 532 */
574 0x40830E11, /* Smart Array 5312 */
575 0x409A0E11, /* Smart Array 641 */
576 0x409B0E11, /* Smart Array 642 */
577 0x40910E11, /* Smart Array 6i */
580 /* List of controllers which cannot even be soft reset */
581 static u32 soft_unresettable_controller[] = {
582 0x40800E11, /* Smart Array 5i */
583 0x40700E11, /* Smart Array 5300 */
584 0x40820E11, /* Smart Array 532 */
585 0x40830E11, /* Smart Array 5312 */
586 0x409A0E11, /* Smart Array 641 */
587 0x409B0E11, /* Smart Array 642 */
588 0x40910E11, /* Smart Array 6i */
589 /* Exclude 640x boards. These are two pci devices in one slot
590 * which share a battery backed cache module. One controls the
591 * cache, the other accesses the cache through the one that controls
592 * it. If we reset the one controlling the cache, the other will
593 * likely not be happy. Just forbid resetting this conjoined mess.
594 * The 640x isn't really supported by hpsa anyway.
596 0x409C0E11, /* Smart Array 6400 */
597 0x409D0E11, /* Smart Array 6400 EM */
600 static int board_id_in_array(u32 a[], int nelems, u32 board_id)
604 for (i = 0; i < nelems; i++)
605 if (a[i] == board_id)
610 static int ctlr_is_hard_resettable(u32 board_id)
612 return !board_id_in_array(unresettable_controller,
613 ARRAY_SIZE(unresettable_controller), board_id);
616 static int ctlr_is_soft_resettable(u32 board_id)
618 return !board_id_in_array(soft_unresettable_controller,
619 ARRAY_SIZE(soft_unresettable_controller), board_id);
622 static int ctlr_is_resettable(u32 board_id)
624 return ctlr_is_hard_resettable(board_id) ||
625 ctlr_is_soft_resettable(board_id);
628 static ssize_t host_show_resettable(struct device *dev,
629 struct device_attribute *attr, char *buf)
632 struct Scsi_Host *shost = class_to_shost(dev);
634 h = shost_to_hba(shost);
635 return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id));
638 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[])
640 return (scsi3addr[3] & 0xC0) == 0x40;
643 static const char * const raid_label[] = { "0", "4", "1(+0)", "5", "5+1", "6",
644 "1(+0)ADM", "UNKNOWN", "PHYS DRV"
646 #define HPSA_RAID_0 0
647 #define HPSA_RAID_4 1
648 #define HPSA_RAID_1 2 /* also used for RAID 10 */
649 #define HPSA_RAID_5 3 /* also used for RAID 50 */
650 #define HPSA_RAID_51 4
651 #define HPSA_RAID_6 5 /* also used for RAID 60 */
652 #define HPSA_RAID_ADM 6 /* also used for RAID 1+0 ADM */
653 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 2)
654 #define PHYSICAL_DRIVE (ARRAY_SIZE(raid_label) - 1)
656 static inline bool is_logical_device(struct hpsa_scsi_dev_t *device)
658 return !device->physical_device;
661 static ssize_t raid_level_show(struct device *dev,
662 struct device_attribute *attr, char *buf)
665 unsigned char rlevel;
667 struct scsi_device *sdev;
668 struct hpsa_scsi_dev_t *hdev;
671 sdev = to_scsi_device(dev);
672 h = sdev_to_hba(sdev);
673 spin_lock_irqsave(&h->lock, flags);
674 hdev = sdev->hostdata;
676 spin_unlock_irqrestore(&h->lock, flags);
680 /* Is this even a logical drive? */
681 if (!is_logical_device(hdev)) {
682 spin_unlock_irqrestore(&h->lock, flags);
683 l = snprintf(buf, PAGE_SIZE, "N/A\n");
687 rlevel = hdev->raid_level;
688 spin_unlock_irqrestore(&h->lock, flags);
689 if (rlevel > RAID_UNKNOWN)
690 rlevel = RAID_UNKNOWN;
691 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]);
695 static ssize_t lunid_show(struct device *dev,
696 struct device_attribute *attr, char *buf)
699 struct scsi_device *sdev;
700 struct hpsa_scsi_dev_t *hdev;
702 unsigned char lunid[8];
704 sdev = to_scsi_device(dev);
705 h = sdev_to_hba(sdev);
706 spin_lock_irqsave(&h->lock, flags);
707 hdev = sdev->hostdata;
709 spin_unlock_irqrestore(&h->lock, flags);
712 memcpy(lunid, hdev->scsi3addr, sizeof(lunid));
713 spin_unlock_irqrestore(&h->lock, flags);
714 return snprintf(buf, 20, "0x%8phN\n", lunid);
717 static ssize_t unique_id_show(struct device *dev,
718 struct device_attribute *attr, char *buf)
721 struct scsi_device *sdev;
722 struct hpsa_scsi_dev_t *hdev;
724 unsigned char sn[16];
726 sdev = to_scsi_device(dev);
727 h = sdev_to_hba(sdev);
728 spin_lock_irqsave(&h->lock, flags);
729 hdev = sdev->hostdata;
731 spin_unlock_irqrestore(&h->lock, flags);
734 memcpy(sn, hdev->device_id, sizeof(sn));
735 spin_unlock_irqrestore(&h->lock, flags);
736 return snprintf(buf, 16 * 2 + 2,
737 "%02X%02X%02X%02X%02X%02X%02X%02X"
738 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
739 sn[0], sn[1], sn[2], sn[3],
740 sn[4], sn[5], sn[6], sn[7],
741 sn[8], sn[9], sn[10], sn[11],
742 sn[12], sn[13], sn[14], sn[15]);
745 static ssize_t sas_address_show(struct device *dev,
746 struct device_attribute *attr, char *buf)
749 struct scsi_device *sdev;
750 struct hpsa_scsi_dev_t *hdev;
754 sdev = to_scsi_device(dev);
755 h = sdev_to_hba(sdev);
756 spin_lock_irqsave(&h->lock, flags);
757 hdev = sdev->hostdata;
758 if (!hdev || is_logical_device(hdev) || !hdev->expose_device) {
759 spin_unlock_irqrestore(&h->lock, flags);
762 sas_address = hdev->sas_address;
763 spin_unlock_irqrestore(&h->lock, flags);
765 return snprintf(buf, PAGE_SIZE, "0x%016llx\n", sas_address);
768 static ssize_t host_show_hp_ssd_smart_path_enabled(struct device *dev,
769 struct device_attribute *attr, char *buf)
772 struct scsi_device *sdev;
773 struct hpsa_scsi_dev_t *hdev;
777 sdev = to_scsi_device(dev);
778 h = sdev_to_hba(sdev);
779 spin_lock_irqsave(&h->lock, flags);
780 hdev = sdev->hostdata;
782 spin_unlock_irqrestore(&h->lock, flags);
785 offload_enabled = hdev->offload_enabled;
786 spin_unlock_irqrestore(&h->lock, flags);
788 if (hdev->devtype == TYPE_DISK || hdev->devtype == TYPE_ZBC)
789 return snprintf(buf, 20, "%d\n", offload_enabled);
791 return snprintf(buf, 40, "%s\n",
792 "Not applicable for a controller");
796 static ssize_t path_info_show(struct device *dev,
797 struct device_attribute *attr, char *buf)
800 struct scsi_device *sdev;
801 struct hpsa_scsi_dev_t *hdev;
807 u8 path_map_index = 0;
809 unsigned char phys_connector[2];
811 sdev = to_scsi_device(dev);
812 h = sdev_to_hba(sdev);
813 spin_lock_irqsave(&h->devlock, flags);
814 hdev = sdev->hostdata;
816 spin_unlock_irqrestore(&h->devlock, flags);
821 for (i = 0; i < MAX_PATHS; i++) {
822 path_map_index = 1<<i;
823 if (i == hdev->active_path_index)
825 else if (hdev->path_map & path_map_index)
830 output_len += scnprintf(buf + output_len,
831 PAGE_SIZE - output_len,
832 "[%d:%d:%d:%d] %20.20s ",
833 h->scsi_host->host_no,
834 hdev->bus, hdev->target, hdev->lun,
835 scsi_device_type(hdev->devtype));
837 if (hdev->devtype == TYPE_RAID || is_logical_device(hdev)) {
838 output_len += scnprintf(buf + output_len,
839 PAGE_SIZE - output_len,
845 memcpy(&phys_connector, &hdev->phys_connector[i],
846 sizeof(phys_connector));
847 if (phys_connector[0] < '0')
848 phys_connector[0] = '0';
849 if (phys_connector[1] < '0')
850 phys_connector[1] = '0';
851 output_len += scnprintf(buf + output_len,
852 PAGE_SIZE - output_len,
855 if ((hdev->devtype == TYPE_DISK || hdev->devtype == TYPE_ZBC) &&
856 hdev->expose_device) {
857 if (box == 0 || box == 0xFF) {
858 output_len += scnprintf(buf + output_len,
859 PAGE_SIZE - output_len,
863 output_len += scnprintf(buf + output_len,
864 PAGE_SIZE - output_len,
865 "BOX: %hhu BAY: %hhu %s\n",
868 } else if (box != 0 && box != 0xFF) {
869 output_len += scnprintf(buf + output_len,
870 PAGE_SIZE - output_len, "BOX: %hhu %s\n",
873 output_len += scnprintf(buf + output_len,
874 PAGE_SIZE - output_len, "%s\n", active);
877 spin_unlock_irqrestore(&h->devlock, flags);
881 static ssize_t host_show_ctlr_num(struct device *dev,
882 struct device_attribute *attr, char *buf)
885 struct Scsi_Host *shost = class_to_shost(dev);
887 h = shost_to_hba(shost);
888 return snprintf(buf, 20, "%d\n", h->ctlr);
891 static ssize_t host_show_legacy_board(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->legacy_board ? 1 : 0);
901 static DEVICE_ATTR_RO(raid_level);
902 static DEVICE_ATTR_RO(lunid);
903 static DEVICE_ATTR_RO(unique_id);
904 static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
905 static DEVICE_ATTR_RO(sas_address);
906 static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO,
907 host_show_hp_ssd_smart_path_enabled, NULL);
908 static DEVICE_ATTR_RO(path_info);
909 static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH,
910 host_show_hp_ssd_smart_path_status,
911 host_store_hp_ssd_smart_path_status);
912 static DEVICE_ATTR(raid_offload_debug, S_IWUSR, NULL,
913 host_store_raid_offload_debug);
914 static DEVICE_ATTR(firmware_revision, S_IRUGO,
915 host_show_firmware_revision, NULL);
916 static DEVICE_ATTR(commands_outstanding, S_IRUGO,
917 host_show_commands_outstanding, NULL);
918 static DEVICE_ATTR(transport_mode, S_IRUGO,
919 host_show_transport_mode, NULL);
920 static DEVICE_ATTR(resettable, S_IRUGO,
921 host_show_resettable, NULL);
922 static DEVICE_ATTR(lockup_detected, S_IRUGO,
923 host_show_lockup_detected, NULL);
924 static DEVICE_ATTR(ctlr_num, S_IRUGO,
925 host_show_ctlr_num, NULL);
926 static DEVICE_ATTR(legacy_board, S_IRUGO,
927 host_show_legacy_board, NULL);
929 static struct device_attribute *hpsa_sdev_attrs[] = {
930 &dev_attr_raid_level,
933 &dev_attr_hp_ssd_smart_path_enabled,
935 &dev_attr_sas_address,
939 static struct device_attribute *hpsa_shost_attrs[] = {
941 &dev_attr_firmware_revision,
942 &dev_attr_commands_outstanding,
943 &dev_attr_transport_mode,
944 &dev_attr_resettable,
945 &dev_attr_hp_ssd_smart_path_status,
946 &dev_attr_raid_offload_debug,
947 &dev_attr_lockup_detected,
949 &dev_attr_legacy_board,
953 #define HPSA_NRESERVED_CMDS (HPSA_CMDS_RESERVED_FOR_DRIVER +\
954 HPSA_MAX_CONCURRENT_PASSTHRUS)
956 static struct scsi_host_template hpsa_driver_template = {
957 .module = THIS_MODULE,
960 .queuecommand = hpsa_scsi_queue_command,
961 .scan_start = hpsa_scan_start,
962 .scan_finished = hpsa_scan_finished,
963 .change_queue_depth = hpsa_change_queue_depth,
965 .eh_device_reset_handler = hpsa_eh_device_reset_handler,
967 .slave_alloc = hpsa_slave_alloc,
968 .slave_configure = hpsa_slave_configure,
969 .slave_destroy = hpsa_slave_destroy,
971 .compat_ioctl = hpsa_compat_ioctl,
973 .sdev_attrs = hpsa_sdev_attrs,
974 .shost_attrs = hpsa_shost_attrs,
979 static inline u32 next_command(struct ctlr_info *h, u8 q)
982 struct reply_queue_buffer *rq = &h->reply_queue[q];
984 if (h->transMethod & CFGTBL_Trans_io_accel1)
985 return h->access.command_completed(h, q);
987 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
988 return h->access.command_completed(h, q);
990 if ((rq->head[rq->current_entry] & 1) == rq->wraparound) {
991 a = rq->head[rq->current_entry];
993 atomic_dec(&h->commands_outstanding);
997 /* Check for wraparound */
998 if (rq->current_entry == h->max_commands) {
999 rq->current_entry = 0;
1000 rq->wraparound ^= 1;
1006 * There are some special bits in the bus address of the
1007 * command that we have to set for the controller to know
1008 * how to process the command:
1010 * Normal performant mode:
1011 * bit 0: 1 means performant mode, 0 means simple mode.
1012 * bits 1-3 = block fetch table entry
1013 * bits 4-6 = command type (== 0)
1016 * bit 0 = "performant mode" bit.
1017 * bits 1-3 = block fetch table entry
1018 * bits 4-6 = command type (== 110)
1019 * (command type is needed because ioaccel1 mode
1020 * commands are submitted through the same register as normal
1021 * mode commands, so this is how the controller knows whether
1022 * the command is normal mode or ioaccel1 mode.)
1025 * bit 0 = "performant mode" bit.
1026 * bits 1-4 = block fetch table entry (note extra bit)
1027 * bits 4-6 = not needed, because ioaccel2 mode has
1028 * a separate special register for submitting commands.
1032 * set_performant_mode: Modify the tag for cciss performant
1033 * set bit 0 for pull model, bits 3-1 for block fetch
1036 #define DEFAULT_REPLY_QUEUE (-1)
1037 static void set_performant_mode(struct ctlr_info *h, struct CommandList *c,
1040 if (likely(h->transMethod & CFGTBL_Trans_Performant)) {
1041 c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1);
1042 if (unlikely(!h->msix_vectors))
1044 c->Header.ReplyQueue = reply_queue;
1048 static void set_ioaccel1_performant_mode(struct ctlr_info *h,
1049 struct CommandList *c,
1052 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
1055 * Tell the controller to post the reply to the queue for this
1056 * processor. This seems to give the best I/O throughput.
1058 cp->ReplyQueue = reply_queue;
1060 * Set the bits in the address sent down to include:
1061 * - performant mode bit (bit 0)
1062 * - pull count (bits 1-3)
1063 * - command type (bits 4-6)
1065 c->busaddr |= 1 | (h->ioaccel1_blockFetchTable[c->Header.SGList] << 1) |
1066 IOACCEL1_BUSADDR_CMDTYPE;
1069 static void set_ioaccel2_tmf_performant_mode(struct ctlr_info *h,
1070 struct CommandList *c,
1073 struct hpsa_tmf_struct *cp = (struct hpsa_tmf_struct *)
1074 &h->ioaccel2_cmd_pool[c->cmdindex];
1076 /* Tell the controller to post the reply to the queue for this
1077 * processor. This seems to give the best I/O throughput.
1079 cp->reply_queue = reply_queue;
1080 /* Set the bits in the address sent down to include:
1081 * - performant mode bit not used in ioaccel mode 2
1082 * - pull count (bits 0-3)
1083 * - command type isn't needed for ioaccel2
1085 c->busaddr |= h->ioaccel2_blockFetchTable[0];
1088 static void set_ioaccel2_performant_mode(struct ctlr_info *h,
1089 struct CommandList *c,
1092 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
1095 * Tell the controller to post the reply to the queue for this
1096 * processor. This seems to give the best I/O throughput.
1098 cp->reply_queue = reply_queue;
1100 * Set the bits in the address sent down to include:
1101 * - performant mode bit not used in ioaccel mode 2
1102 * - pull count (bits 0-3)
1103 * - command type isn't needed for ioaccel2
1105 c->busaddr |= (h->ioaccel2_blockFetchTable[cp->sg_count]);
1108 static int is_firmware_flash_cmd(u8 *cdb)
1110 return cdb[0] == BMIC_WRITE && cdb[6] == BMIC_FLASH_FIRMWARE;
1114 * During firmware flash, the heartbeat register may not update as frequently
1115 * as it should. So we dial down lockup detection during firmware flash. and
1116 * dial it back up when firmware flash completes.
1118 #define HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH (240 * HZ)
1119 #define HEARTBEAT_SAMPLE_INTERVAL (30 * HZ)
1120 #define HPSA_EVENT_MONITOR_INTERVAL (15 * HZ)
1121 static void dial_down_lockup_detection_during_fw_flash(struct ctlr_info *h,
1122 struct CommandList *c)
1124 if (!is_firmware_flash_cmd(c->Request.CDB))
1126 atomic_inc(&h->firmware_flash_in_progress);
1127 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH;
1130 static void dial_up_lockup_detection_on_fw_flash_complete(struct ctlr_info *h,
1131 struct CommandList *c)
1133 if (is_firmware_flash_cmd(c->Request.CDB) &&
1134 atomic_dec_and_test(&h->firmware_flash_in_progress))
1135 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
1138 static void __enqueue_cmd_and_start_io(struct ctlr_info *h,
1139 struct CommandList *c, int reply_queue)
1141 dial_down_lockup_detection_during_fw_flash(h, c);
1142 atomic_inc(&h->commands_outstanding);
1144 atomic_inc(&c->device->commands_outstanding);
1146 reply_queue = h->reply_map[raw_smp_processor_id()];
1147 switch (c->cmd_type) {
1149 set_ioaccel1_performant_mode(h, c, reply_queue);
1150 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
1153 set_ioaccel2_performant_mode(h, c, reply_queue);
1154 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
1157 set_ioaccel2_tmf_performant_mode(h, c, reply_queue);
1158 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
1161 set_performant_mode(h, c, reply_queue);
1162 h->access.submit_command(h, c);
1166 static void enqueue_cmd_and_start_io(struct ctlr_info *h, struct CommandList *c)
1168 __enqueue_cmd_and_start_io(h, c, DEFAULT_REPLY_QUEUE);
1171 static inline int is_hba_lunid(unsigned char scsi3addr[])
1173 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0;
1176 static inline int is_scsi_rev_5(struct ctlr_info *h)
1178 if (!h->hba_inquiry_data)
1180 if ((h->hba_inquiry_data[2] & 0x07) == 5)
1185 static int hpsa_find_target_lun(struct ctlr_info *h,
1186 unsigned char scsi3addr[], int bus, int *target, int *lun)
1188 /* finds an unused bus, target, lun for a new physical device
1189 * assumes h->devlock is held
1192 DECLARE_BITMAP(lun_taken, HPSA_MAX_DEVICES);
1194 bitmap_zero(lun_taken, HPSA_MAX_DEVICES);
1196 for (i = 0; i < h->ndevices; i++) {
1197 if (h->dev[i]->bus == bus && h->dev[i]->target != -1)
1198 __set_bit(h->dev[i]->target, lun_taken);
1201 i = find_first_zero_bit(lun_taken, HPSA_MAX_DEVICES);
1202 if (i < HPSA_MAX_DEVICES) {
1211 static void hpsa_show_dev_msg(const char *level, struct ctlr_info *h,
1212 struct hpsa_scsi_dev_t *dev, char *description)
1214 #define LABEL_SIZE 25
1215 char label[LABEL_SIZE];
1217 if (h == NULL || h->pdev == NULL || h->scsi_host == NULL)
1220 switch (dev->devtype) {
1222 snprintf(label, LABEL_SIZE, "controller");
1224 case TYPE_ENCLOSURE:
1225 snprintf(label, LABEL_SIZE, "enclosure");
1230 snprintf(label, LABEL_SIZE, "external");
1231 else if (!is_logical_dev_addr_mode(dev->scsi3addr))
1232 snprintf(label, LABEL_SIZE, "%s",
1233 raid_label[PHYSICAL_DRIVE]);
1235 snprintf(label, LABEL_SIZE, "RAID-%s",
1236 dev->raid_level > RAID_UNKNOWN ? "?" :
1237 raid_label[dev->raid_level]);
1240 snprintf(label, LABEL_SIZE, "rom");
1243 snprintf(label, LABEL_SIZE, "tape");
1245 case TYPE_MEDIUM_CHANGER:
1246 snprintf(label, LABEL_SIZE, "changer");
1249 snprintf(label, LABEL_SIZE, "UNKNOWN");
1253 dev_printk(level, &h->pdev->dev,
1254 "scsi %d:%d:%d:%d: %s %s %.8s %.16s %s SSDSmartPathCap%c En%c Exp=%d\n",
1255 h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
1257 scsi_device_type(dev->devtype),
1261 dev->offload_config ? '+' : '-',
1262 dev->offload_to_be_enabled ? '+' : '-',
1263 dev->expose_device);
1266 /* Add an entry into h->dev[] array. */
1267 static int hpsa_scsi_add_entry(struct ctlr_info *h,
1268 struct hpsa_scsi_dev_t *device,
1269 struct hpsa_scsi_dev_t *added[], int *nadded)
1271 /* assumes h->devlock is held */
1272 int n = h->ndevices;
1274 unsigned char addr1[8], addr2[8];
1275 struct hpsa_scsi_dev_t *sd;
1277 if (n >= HPSA_MAX_DEVICES) {
1278 dev_err(&h->pdev->dev, "too many devices, some will be "
1283 /* physical devices do not have lun or target assigned until now. */
1284 if (device->lun != -1)
1285 /* Logical device, lun is already assigned. */
1288 /* If this device a non-zero lun of a multi-lun device
1289 * byte 4 of the 8-byte LUN addr will contain the logical
1290 * unit no, zero otherwise.
1292 if (device->scsi3addr[4] == 0) {
1293 /* This is not a non-zero lun of a multi-lun device */
1294 if (hpsa_find_target_lun(h, device->scsi3addr,
1295 device->bus, &device->target, &device->lun) != 0)
1300 /* This is a non-zero lun of a multi-lun device.
1301 * Search through our list and find the device which
1302 * has the same 8 byte LUN address, excepting byte 4 and 5.
1303 * Assign the same bus and target for this new LUN.
1304 * Use the logical unit number from the firmware.
1306 memcpy(addr1, device->scsi3addr, 8);
1309 for (i = 0; i < n; i++) {
1311 memcpy(addr2, sd->scsi3addr, 8);
1314 /* differ only in byte 4 and 5? */
1315 if (memcmp(addr1, addr2, 8) == 0) {
1316 device->bus = sd->bus;
1317 device->target = sd->target;
1318 device->lun = device->scsi3addr[4];
1322 if (device->lun == -1) {
1323 dev_warn(&h->pdev->dev, "physical device with no LUN=0,"
1324 " suspect firmware bug or unsupported hardware "
1325 "configuration.\n");
1333 added[*nadded] = device;
1335 hpsa_show_dev_msg(KERN_INFO, h, device,
1336 device->expose_device ? "added" : "masked");
1341 * Called during a scan operation.
1343 * Update an entry in h->dev[] array.
1345 static void hpsa_scsi_update_entry(struct ctlr_info *h,
1346 int entry, struct hpsa_scsi_dev_t *new_entry)
1348 /* assumes h->devlock is held */
1349 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1351 /* Raid level changed. */
1352 h->dev[entry]->raid_level = new_entry->raid_level;
1355 * ioacccel_handle may have changed for a dual domain disk
1357 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1359 /* Raid offload parameters changed. Careful about the ordering. */
1360 if (new_entry->offload_config && new_entry->offload_to_be_enabled) {
1362 * if drive is newly offload_enabled, we want to copy the
1363 * raid map data first. If previously offload_enabled and
1364 * offload_config were set, raid map data had better be
1365 * the same as it was before. If raid map data has changed
1366 * then it had better be the case that
1367 * h->dev[entry]->offload_enabled is currently 0.
1369 h->dev[entry]->raid_map = new_entry->raid_map;
1370 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1372 if (new_entry->offload_to_be_enabled) {
1373 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1374 wmb(); /* set ioaccel_handle *before* hba_ioaccel_enabled */
1376 h->dev[entry]->hba_ioaccel_enabled = new_entry->hba_ioaccel_enabled;
1377 h->dev[entry]->offload_config = new_entry->offload_config;
1378 h->dev[entry]->offload_to_mirror = new_entry->offload_to_mirror;
1379 h->dev[entry]->queue_depth = new_entry->queue_depth;
1382 * We can turn off ioaccel offload now, but need to delay turning
1383 * ioaccel on until we can update h->dev[entry]->phys_disk[], but we
1384 * can't do that until all the devices are updated.
1386 h->dev[entry]->offload_to_be_enabled = new_entry->offload_to_be_enabled;
1389 * turn ioaccel off immediately if told to do so.
1391 if (!new_entry->offload_to_be_enabled)
1392 h->dev[entry]->offload_enabled = 0;
1394 hpsa_show_dev_msg(KERN_INFO, h, h->dev[entry], "updated");
1397 /* Replace an entry from h->dev[] array. */
1398 static void hpsa_scsi_replace_entry(struct ctlr_info *h,
1399 int entry, struct hpsa_scsi_dev_t *new_entry,
1400 struct hpsa_scsi_dev_t *added[], int *nadded,
1401 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1403 /* assumes h->devlock is held */
1404 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1405 removed[*nremoved] = h->dev[entry];
1409 * New physical devices won't have target/lun assigned yet
1410 * so we need to preserve the values in the slot we are replacing.
1412 if (new_entry->target == -1) {
1413 new_entry->target = h->dev[entry]->target;
1414 new_entry->lun = h->dev[entry]->lun;
1417 h->dev[entry] = new_entry;
1418 added[*nadded] = new_entry;
1421 hpsa_show_dev_msg(KERN_INFO, h, new_entry, "replaced");
1424 /* Remove an entry from h->dev[] array. */
1425 static void hpsa_scsi_remove_entry(struct ctlr_info *h, int entry,
1426 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1428 /* assumes h->devlock is held */
1430 struct hpsa_scsi_dev_t *sd;
1432 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1435 removed[*nremoved] = h->dev[entry];
1438 for (i = entry; i < h->ndevices-1; i++)
1439 h->dev[i] = h->dev[i+1];
1441 hpsa_show_dev_msg(KERN_INFO, h, sd, "removed");
1444 #define SCSI3ADDR_EQ(a, b) ( \
1445 (a)[7] == (b)[7] && \
1446 (a)[6] == (b)[6] && \
1447 (a)[5] == (b)[5] && \
1448 (a)[4] == (b)[4] && \
1449 (a)[3] == (b)[3] && \
1450 (a)[2] == (b)[2] && \
1451 (a)[1] == (b)[1] && \
1454 static void fixup_botched_add(struct ctlr_info *h,
1455 struct hpsa_scsi_dev_t *added)
1457 /* called when scsi_add_device fails in order to re-adjust
1458 * h->dev[] to match the mid layer's view.
1460 unsigned long flags;
1463 spin_lock_irqsave(&h->lock, flags);
1464 for (i = 0; i < h->ndevices; i++) {
1465 if (h->dev[i] == added) {
1466 for (j = i; j < h->ndevices-1; j++)
1467 h->dev[j] = h->dev[j+1];
1472 spin_unlock_irqrestore(&h->lock, flags);
1476 static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1,
1477 struct hpsa_scsi_dev_t *dev2)
1479 /* we compare everything except lun and target as these
1480 * are not yet assigned. Compare parts likely
1483 if (memcmp(dev1->scsi3addr, dev2->scsi3addr,
1484 sizeof(dev1->scsi3addr)) != 0)
1486 if (memcmp(dev1->device_id, dev2->device_id,
1487 sizeof(dev1->device_id)) != 0)
1489 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0)
1491 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0)
1493 if (dev1->devtype != dev2->devtype)
1495 if (dev1->bus != dev2->bus)
1500 static inline int device_updated(struct hpsa_scsi_dev_t *dev1,
1501 struct hpsa_scsi_dev_t *dev2)
1503 /* Device attributes that can change, but don't mean
1504 * that the device is a different device, nor that the OS
1505 * needs to be told anything about the change.
1507 if (dev1->raid_level != dev2->raid_level)
1509 if (dev1->offload_config != dev2->offload_config)
1511 if (dev1->offload_to_be_enabled != dev2->offload_to_be_enabled)
1513 if (!is_logical_dev_addr_mode(dev1->scsi3addr))
1514 if (dev1->queue_depth != dev2->queue_depth)
1517 * This can happen for dual domain devices. An active
1518 * path change causes the ioaccel handle to change
1520 * for example note the handle differences between p0 and p1
1521 * Device WWN ,WWN hash,Handle
1522 * D016 p0|0x3 [02]P2E:01:01,0x5000C5005FC4DACA,0x9B5616,0x01030003
1523 * p1 0x5000C5005FC4DAC9,0x6798C0,0x00040004
1525 if (dev1->ioaccel_handle != dev2->ioaccel_handle)
1530 /* Find needle in haystack. If exact match found, return DEVICE_SAME,
1531 * and return needle location in *index. If scsi3addr matches, but not
1532 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
1533 * location in *index.
1534 * In the case of a minor device attribute change, such as RAID level, just
1535 * return DEVICE_UPDATED, along with the updated device's location in index.
1536 * If needle not found, return DEVICE_NOT_FOUND.
1538 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle,
1539 struct hpsa_scsi_dev_t *haystack[], int haystack_size,
1543 #define DEVICE_NOT_FOUND 0
1544 #define DEVICE_CHANGED 1
1545 #define DEVICE_SAME 2
1546 #define DEVICE_UPDATED 3
1548 return DEVICE_NOT_FOUND;
1550 for (i = 0; i < haystack_size; i++) {
1551 if (haystack[i] == NULL) /* previously removed. */
1553 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) {
1555 if (device_is_the_same(needle, haystack[i])) {
1556 if (device_updated(needle, haystack[i]))
1557 return DEVICE_UPDATED;
1560 /* Keep offline devices offline */
1561 if (needle->volume_offline)
1562 return DEVICE_NOT_FOUND;
1563 return DEVICE_CHANGED;
1568 return DEVICE_NOT_FOUND;
1571 static void hpsa_monitor_offline_device(struct ctlr_info *h,
1572 unsigned char scsi3addr[])
1574 struct offline_device_entry *device;
1575 unsigned long flags;
1577 /* Check to see if device is already on the list */
1578 spin_lock_irqsave(&h->offline_device_lock, flags);
1579 list_for_each_entry(device, &h->offline_device_list, offline_list) {
1580 if (memcmp(device->scsi3addr, scsi3addr,
1581 sizeof(device->scsi3addr)) == 0) {
1582 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1586 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1588 /* Device is not on the list, add it. */
1589 device = kmalloc(sizeof(*device), GFP_KERNEL);
1593 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
1594 spin_lock_irqsave(&h->offline_device_lock, flags);
1595 list_add_tail(&device->offline_list, &h->offline_device_list);
1596 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1599 /* Print a message explaining various offline volume states */
1600 static void hpsa_show_volume_status(struct ctlr_info *h,
1601 struct hpsa_scsi_dev_t *sd)
1603 if (sd->volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED)
1604 dev_info(&h->pdev->dev,
1605 "C%d:B%d:T%d:L%d Volume status is not available through vital product data pages.\n",
1606 h->scsi_host->host_no,
1607 sd->bus, sd->target, sd->lun);
1608 switch (sd->volume_offline) {
1611 case HPSA_LV_UNDERGOING_ERASE:
1612 dev_info(&h->pdev->dev,
1613 "C%d:B%d:T%d:L%d Volume is undergoing background erase process.\n",
1614 h->scsi_host->host_no,
1615 sd->bus, sd->target, sd->lun);
1617 case HPSA_LV_NOT_AVAILABLE:
1618 dev_info(&h->pdev->dev,
1619 "C%d:B%d:T%d:L%d Volume is waiting for transforming volume.\n",
1620 h->scsi_host->host_no,
1621 sd->bus, sd->target, sd->lun);
1623 case HPSA_LV_UNDERGOING_RPI:
1624 dev_info(&h->pdev->dev,
1625 "C%d:B%d:T%d:L%d Volume is undergoing rapid parity init.\n",
1626 h->scsi_host->host_no,
1627 sd->bus, sd->target, sd->lun);
1629 case HPSA_LV_PENDING_RPI:
1630 dev_info(&h->pdev->dev,
1631 "C%d:B%d:T%d:L%d Volume is queued for rapid parity initialization process.\n",
1632 h->scsi_host->host_no,
1633 sd->bus, sd->target, sd->lun);
1635 case HPSA_LV_ENCRYPTED_NO_KEY:
1636 dev_info(&h->pdev->dev,
1637 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because key is not present.\n",
1638 h->scsi_host->host_no,
1639 sd->bus, sd->target, sd->lun);
1641 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
1642 dev_info(&h->pdev->dev,
1643 "C%d:B%d:T%d:L%d Volume is not encrypted and cannot be accessed because controller is in encryption-only mode.\n",
1644 h->scsi_host->host_no,
1645 sd->bus, sd->target, sd->lun);
1647 case HPSA_LV_UNDERGOING_ENCRYPTION:
1648 dev_info(&h->pdev->dev,
1649 "C%d:B%d:T%d:L%d Volume is undergoing encryption process.\n",
1650 h->scsi_host->host_no,
1651 sd->bus, sd->target, sd->lun);
1653 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
1654 dev_info(&h->pdev->dev,
1655 "C%d:B%d:T%d:L%d Volume is undergoing encryption re-keying process.\n",
1656 h->scsi_host->host_no,
1657 sd->bus, sd->target, sd->lun);
1659 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
1660 dev_info(&h->pdev->dev,
1661 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because controller does not have encryption enabled.\n",
1662 h->scsi_host->host_no,
1663 sd->bus, sd->target, sd->lun);
1665 case HPSA_LV_PENDING_ENCRYPTION:
1666 dev_info(&h->pdev->dev,
1667 "C%d:B%d:T%d:L%d Volume is pending migration to encrypted state, but process has not started.\n",
1668 h->scsi_host->host_no,
1669 sd->bus, sd->target, sd->lun);
1671 case HPSA_LV_PENDING_ENCRYPTION_REKEYING:
1672 dev_info(&h->pdev->dev,
1673 "C%d:B%d:T%d:L%d Volume is encrypted and is pending encryption rekeying.\n",
1674 h->scsi_host->host_no,
1675 sd->bus, sd->target, sd->lun);
1681 * Figure the list of physical drive pointers for a logical drive with
1682 * raid offload configured.
1684 static void hpsa_figure_phys_disk_ptrs(struct ctlr_info *h,
1685 struct hpsa_scsi_dev_t *dev[], int ndevices,
1686 struct hpsa_scsi_dev_t *logical_drive)
1688 struct raid_map_data *map = &logical_drive->raid_map;
1689 struct raid_map_disk_data *dd = &map->data[0];
1691 int total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
1692 le16_to_cpu(map->metadata_disks_per_row);
1693 int nraid_map_entries = le16_to_cpu(map->row_cnt) *
1694 le16_to_cpu(map->layout_map_count) *
1695 total_disks_per_row;
1696 int nphys_disk = le16_to_cpu(map->layout_map_count) *
1697 total_disks_per_row;
1700 if (nraid_map_entries > RAID_MAP_MAX_ENTRIES)
1701 nraid_map_entries = RAID_MAP_MAX_ENTRIES;
1703 logical_drive->nphysical_disks = nraid_map_entries;
1706 for (i = 0; i < nraid_map_entries; i++) {
1707 logical_drive->phys_disk[i] = NULL;
1708 if (!logical_drive->offload_config)
1710 for (j = 0; j < ndevices; j++) {
1713 if (dev[j]->devtype != TYPE_DISK &&
1714 dev[j]->devtype != TYPE_ZBC)
1716 if (is_logical_device(dev[j]))
1718 if (dev[j]->ioaccel_handle != dd[i].ioaccel_handle)
1721 logical_drive->phys_disk[i] = dev[j];
1723 qdepth = min(h->nr_cmds, qdepth +
1724 logical_drive->phys_disk[i]->queue_depth);
1729 * This can happen if a physical drive is removed and
1730 * the logical drive is degraded. In that case, the RAID
1731 * map data will refer to a physical disk which isn't actually
1732 * present. And in that case offload_enabled should already
1733 * be 0, but we'll turn it off here just in case
1735 if (!logical_drive->phys_disk[i]) {
1736 dev_warn(&h->pdev->dev,
1737 "%s: [%d:%d:%d:%d] A phys disk component of LV is missing, turning off offload_enabled for LV.\n",
1739 h->scsi_host->host_no, logical_drive->bus,
1740 logical_drive->target, logical_drive->lun);
1741 logical_drive->offload_enabled = 0;
1742 logical_drive->offload_to_be_enabled = 0;
1743 logical_drive->queue_depth = 8;
1746 if (nraid_map_entries)
1748 * This is correct for reads, too high for full stripe writes,
1749 * way too high for partial stripe writes
1751 logical_drive->queue_depth = qdepth;
1753 if (logical_drive->external)
1754 logical_drive->queue_depth = EXTERNAL_QD;
1756 logical_drive->queue_depth = h->nr_cmds;
1760 static void hpsa_update_log_drive_phys_drive_ptrs(struct ctlr_info *h,
1761 struct hpsa_scsi_dev_t *dev[], int ndevices)
1765 for (i = 0; i < ndevices; i++) {
1768 if (dev[i]->devtype != TYPE_DISK &&
1769 dev[i]->devtype != TYPE_ZBC)
1771 if (!is_logical_device(dev[i]))
1775 * If offload is currently enabled, the RAID map and
1776 * phys_disk[] assignment *better* not be changing
1777 * because we would be changing ioaccel phsy_disk[] pointers
1778 * on a ioaccel volume processing I/O requests.
1780 * If an ioaccel volume status changed, initially because it was
1781 * re-configured and thus underwent a transformation, or
1782 * a drive failed, we would have received a state change
1783 * request and ioaccel should have been turned off. When the
1784 * transformation completes, we get another state change
1785 * request to turn ioaccel back on. In this case, we need
1786 * to update the ioaccel information.
1788 * Thus: If it is not currently enabled, but will be after
1789 * the scan completes, make sure the ioaccel pointers
1793 if (!dev[i]->offload_enabled && dev[i]->offload_to_be_enabled)
1794 hpsa_figure_phys_disk_ptrs(h, dev, ndevices, dev[i]);
1798 static int hpsa_add_device(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
1805 if (is_logical_device(device)) /* RAID */
1806 rc = scsi_add_device(h->scsi_host, device->bus,
1807 device->target, device->lun);
1809 rc = hpsa_add_sas_device(h->sas_host, device);
1814 static int hpsa_find_outstanding_commands_for_dev(struct ctlr_info *h,
1815 struct hpsa_scsi_dev_t *dev)
1820 for (i = 0; i < h->nr_cmds; i++) {
1821 struct CommandList *c = h->cmd_pool + i;
1822 int refcount = atomic_inc_return(&c->refcount);
1824 if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev,
1826 unsigned long flags;
1828 spin_lock_irqsave(&h->lock, flags); /* Implied MB */
1829 if (!hpsa_is_cmd_idle(c))
1831 spin_unlock_irqrestore(&h->lock, flags);
1841 static void hpsa_wait_for_outstanding_commands_for_dev(struct ctlr_info *h,
1842 struct hpsa_scsi_dev_t *device)
1846 int num_wait = NUM_WAIT;
1848 if (device->external)
1849 num_wait = HPSA_EH_PTRAID_TIMEOUT;
1852 cmds = hpsa_find_outstanding_commands_for_dev(h, device);
1855 if (++waits > num_wait)
1860 if (waits > num_wait) {
1861 dev_warn(&h->pdev->dev,
1862 "%s: removing device [%d:%d:%d:%d] with %d outstanding commands!\n",
1864 h->scsi_host->host_no,
1865 device->bus, device->target, device->lun, cmds);
1869 static void hpsa_remove_device(struct ctlr_info *h,
1870 struct hpsa_scsi_dev_t *device)
1872 struct scsi_device *sdev = NULL;
1878 * Allow for commands to drain
1880 device->removed = 1;
1881 hpsa_wait_for_outstanding_commands_for_dev(h, device);
1883 if (is_logical_device(device)) { /* RAID */
1884 sdev = scsi_device_lookup(h->scsi_host, device->bus,
1885 device->target, device->lun);
1887 scsi_remove_device(sdev);
1888 scsi_device_put(sdev);
1891 * We don't expect to get here. Future commands
1892 * to this device will get a selection timeout as
1893 * if the device were gone.
1895 hpsa_show_dev_msg(KERN_WARNING, h, device,
1896 "didn't find device for removal.");
1900 hpsa_remove_sas_device(device);
1904 static void adjust_hpsa_scsi_table(struct ctlr_info *h,
1905 struct hpsa_scsi_dev_t *sd[], int nsds)
1907 /* sd contains scsi3 addresses and devtypes, and inquiry
1908 * data. This function takes what's in sd to be the current
1909 * reality and updates h->dev[] to reflect that reality.
1911 int i, entry, device_change, changes = 0;
1912 struct hpsa_scsi_dev_t *csd;
1913 unsigned long flags;
1914 struct hpsa_scsi_dev_t **added, **removed;
1915 int nadded, nremoved;
1918 * A reset can cause a device status to change
1919 * re-schedule the scan to see what happened.
1921 spin_lock_irqsave(&h->reset_lock, flags);
1922 if (h->reset_in_progress) {
1923 h->drv_req_rescan = 1;
1924 spin_unlock_irqrestore(&h->reset_lock, flags);
1927 spin_unlock_irqrestore(&h->reset_lock, flags);
1929 added = kcalloc(HPSA_MAX_DEVICES, sizeof(*added), GFP_KERNEL);
1930 removed = kcalloc(HPSA_MAX_DEVICES, sizeof(*removed), GFP_KERNEL);
1932 if (!added || !removed) {
1933 dev_warn(&h->pdev->dev, "out of memory in "
1934 "adjust_hpsa_scsi_table\n");
1938 spin_lock_irqsave(&h->devlock, flags);
1940 /* find any devices in h->dev[] that are not in
1941 * sd[] and remove them from h->dev[], and for any
1942 * devices which have changed, remove the old device
1943 * info and add the new device info.
1944 * If minor device attributes change, just update
1945 * the existing device structure.
1950 while (i < h->ndevices) {
1952 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry);
1953 if (device_change == DEVICE_NOT_FOUND) {
1955 hpsa_scsi_remove_entry(h, i, removed, &nremoved);
1956 continue; /* remove ^^^, hence i not incremented */
1957 } else if (device_change == DEVICE_CHANGED) {
1959 hpsa_scsi_replace_entry(h, i, sd[entry],
1960 added, &nadded, removed, &nremoved);
1961 /* Set it to NULL to prevent it from being freed
1962 * at the bottom of hpsa_update_scsi_devices()
1965 } else if (device_change == DEVICE_UPDATED) {
1966 hpsa_scsi_update_entry(h, i, sd[entry]);
1971 /* Now, make sure every device listed in sd[] is also
1972 * listed in h->dev[], adding them if they aren't found
1975 for (i = 0; i < nsds; i++) {
1976 if (!sd[i]) /* if already added above. */
1979 /* Don't add devices which are NOT READY, FORMAT IN PROGRESS
1980 * as the SCSI mid-layer does not handle such devices well.
1981 * It relentlessly loops sending TUR at 3Hz, then READ(10)
1982 * at 160Hz, and prevents the system from coming up.
1984 if (sd[i]->volume_offline) {
1985 hpsa_show_volume_status(h, sd[i]);
1986 hpsa_show_dev_msg(KERN_INFO, h, sd[i], "offline");
1990 device_change = hpsa_scsi_find_entry(sd[i], h->dev,
1991 h->ndevices, &entry);
1992 if (device_change == DEVICE_NOT_FOUND) {
1994 if (hpsa_scsi_add_entry(h, sd[i], added, &nadded) != 0)
1996 sd[i] = NULL; /* prevent from being freed later. */
1997 } else if (device_change == DEVICE_CHANGED) {
1998 /* should never happen... */
2000 dev_warn(&h->pdev->dev,
2001 "device unexpectedly changed.\n");
2002 /* but if it does happen, we just ignore that device */
2005 hpsa_update_log_drive_phys_drive_ptrs(h, h->dev, h->ndevices);
2008 * Now that h->dev[]->phys_disk[] is coherent, we can enable
2009 * any logical drives that need it enabled.
2011 * The raid map should be current by now.
2013 * We are updating the device list used for I/O requests.
2015 for (i = 0; i < h->ndevices; i++) {
2016 if (h->dev[i] == NULL)
2018 h->dev[i]->offload_enabled = h->dev[i]->offload_to_be_enabled;
2021 spin_unlock_irqrestore(&h->devlock, flags);
2023 /* Monitor devices which are in one of several NOT READY states to be
2024 * brought online later. This must be done without holding h->devlock,
2025 * so don't touch h->dev[]
2027 for (i = 0; i < nsds; i++) {
2028 if (!sd[i]) /* if already added above. */
2030 if (sd[i]->volume_offline)
2031 hpsa_monitor_offline_device(h, sd[i]->scsi3addr);
2034 /* Don't notify scsi mid layer of any changes the first time through
2035 * (or if there are no changes) scsi_scan_host will do it later the
2036 * first time through.
2041 /* Notify scsi mid layer of any removed devices */
2042 for (i = 0; i < nremoved; i++) {
2043 if (removed[i] == NULL)
2045 if (removed[i]->expose_device)
2046 hpsa_remove_device(h, removed[i]);
2051 /* Notify scsi mid layer of any added devices */
2052 for (i = 0; i < nadded; i++) {
2055 if (added[i] == NULL)
2057 if (!(added[i]->expose_device))
2059 rc = hpsa_add_device(h, added[i]);
2062 dev_warn(&h->pdev->dev,
2063 "addition failed %d, device not added.", rc);
2064 /* now we have to remove it from h->dev,
2065 * since it didn't get added to scsi mid layer
2067 fixup_botched_add(h, added[i]);
2068 h->drv_req_rescan = 1;
2077 * Lookup bus/target/lun and return corresponding struct hpsa_scsi_dev_t *
2078 * Assume's h->devlock is held.
2080 static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h,
2081 int bus, int target, int lun)
2084 struct hpsa_scsi_dev_t *sd;
2086 for (i = 0; i < h->ndevices; i++) {
2088 if (sd->bus == bus && sd->target == target && sd->lun == lun)
2094 static int hpsa_slave_alloc(struct scsi_device *sdev)
2096 struct hpsa_scsi_dev_t *sd = NULL;
2097 unsigned long flags;
2098 struct ctlr_info *h;
2100 h = sdev_to_hba(sdev);
2101 spin_lock_irqsave(&h->devlock, flags);
2102 if (sdev_channel(sdev) == HPSA_PHYSICAL_DEVICE_BUS) {
2103 struct scsi_target *starget;
2104 struct sas_rphy *rphy;
2106 starget = scsi_target(sdev);
2107 rphy = target_to_rphy(starget);
2108 sd = hpsa_find_device_by_sas_rphy(h, rphy);
2110 sd->target = sdev_id(sdev);
2111 sd->lun = sdev->lun;
2115 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev),
2116 sdev_id(sdev), sdev->lun);
2118 if (sd && sd->expose_device) {
2119 atomic_set(&sd->ioaccel_cmds_out, 0);
2120 sdev->hostdata = sd;
2122 sdev->hostdata = NULL;
2123 spin_unlock_irqrestore(&h->devlock, flags);
2127 /* configure scsi device based on internal per-device structure */
2128 static int hpsa_slave_configure(struct scsi_device *sdev)
2130 struct hpsa_scsi_dev_t *sd;
2133 sd = sdev->hostdata;
2134 sdev->no_uld_attach = !sd || !sd->expose_device;
2137 sd->was_removed = 0;
2139 queue_depth = EXTERNAL_QD;
2140 sdev->eh_timeout = HPSA_EH_PTRAID_TIMEOUT;
2141 blk_queue_rq_timeout(sdev->request_queue,
2142 HPSA_EH_PTRAID_TIMEOUT);
2144 queue_depth = sd->queue_depth != 0 ?
2145 sd->queue_depth : sdev->host->can_queue;
2148 queue_depth = sdev->host->can_queue;
2150 scsi_change_queue_depth(sdev, queue_depth);
2155 static void hpsa_slave_destroy(struct scsi_device *sdev)
2157 struct hpsa_scsi_dev_t *hdev = NULL;
2159 hdev = sdev->hostdata;
2162 hdev->was_removed = 1;
2165 static void hpsa_free_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
2169 if (!h->ioaccel2_cmd_sg_list)
2171 for (i = 0; i < h->nr_cmds; i++) {
2172 kfree(h->ioaccel2_cmd_sg_list[i]);
2173 h->ioaccel2_cmd_sg_list[i] = NULL;
2175 kfree(h->ioaccel2_cmd_sg_list);
2176 h->ioaccel2_cmd_sg_list = NULL;
2179 static int hpsa_allocate_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
2183 if (h->chainsize <= 0)
2186 h->ioaccel2_cmd_sg_list =
2187 kcalloc(h->nr_cmds, sizeof(*h->ioaccel2_cmd_sg_list),
2189 if (!h->ioaccel2_cmd_sg_list)
2191 for (i = 0; i < h->nr_cmds; i++) {
2192 h->ioaccel2_cmd_sg_list[i] =
2193 kmalloc_array(h->maxsgentries,
2194 sizeof(*h->ioaccel2_cmd_sg_list[i]),
2196 if (!h->ioaccel2_cmd_sg_list[i])
2202 hpsa_free_ioaccel2_sg_chain_blocks(h);
2206 static void hpsa_free_sg_chain_blocks(struct ctlr_info *h)
2210 if (!h->cmd_sg_list)
2212 for (i = 0; i < h->nr_cmds; i++) {
2213 kfree(h->cmd_sg_list[i]);
2214 h->cmd_sg_list[i] = NULL;
2216 kfree(h->cmd_sg_list);
2217 h->cmd_sg_list = NULL;
2220 static int hpsa_alloc_sg_chain_blocks(struct ctlr_info *h)
2224 if (h->chainsize <= 0)
2227 h->cmd_sg_list = kcalloc(h->nr_cmds, sizeof(*h->cmd_sg_list),
2229 if (!h->cmd_sg_list)
2232 for (i = 0; i < h->nr_cmds; i++) {
2233 h->cmd_sg_list[i] = kmalloc_array(h->chainsize,
2234 sizeof(*h->cmd_sg_list[i]),
2236 if (!h->cmd_sg_list[i])
2243 hpsa_free_sg_chain_blocks(h);
2247 static int hpsa_map_ioaccel2_sg_chain_block(struct ctlr_info *h,
2248 struct io_accel2_cmd *cp, struct CommandList *c)
2250 struct ioaccel2_sg_element *chain_block;
2254 chain_block = h->ioaccel2_cmd_sg_list[c->cmdindex];
2255 chain_size = le32_to_cpu(cp->sg[0].length);
2256 temp64 = dma_map_single(&h->pdev->dev, chain_block, chain_size,
2258 if (dma_mapping_error(&h->pdev->dev, temp64)) {
2259 /* prevent subsequent unmapping */
2260 cp->sg->address = 0;
2263 cp->sg->address = cpu_to_le64(temp64);
2267 static void hpsa_unmap_ioaccel2_sg_chain_block(struct ctlr_info *h,
2268 struct io_accel2_cmd *cp)
2270 struct ioaccel2_sg_element *chain_sg;
2275 temp64 = le64_to_cpu(chain_sg->address);
2276 chain_size = le32_to_cpu(cp->sg[0].length);
2277 dma_unmap_single(&h->pdev->dev, temp64, chain_size, DMA_TO_DEVICE);
2280 static int hpsa_map_sg_chain_block(struct ctlr_info *h,
2281 struct CommandList *c)
2283 struct SGDescriptor *chain_sg, *chain_block;
2287 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
2288 chain_block = h->cmd_sg_list[c->cmdindex];
2289 chain_sg->Ext = cpu_to_le32(HPSA_SG_CHAIN);
2290 chain_len = sizeof(*chain_sg) *
2291 (le16_to_cpu(c->Header.SGTotal) - h->max_cmd_sg_entries);
2292 chain_sg->Len = cpu_to_le32(chain_len);
2293 temp64 = dma_map_single(&h->pdev->dev, chain_block, chain_len,
2295 if (dma_mapping_error(&h->pdev->dev, temp64)) {
2296 /* prevent subsequent unmapping */
2297 chain_sg->Addr = cpu_to_le64(0);
2300 chain_sg->Addr = cpu_to_le64(temp64);
2304 static void hpsa_unmap_sg_chain_block(struct ctlr_info *h,
2305 struct CommandList *c)
2307 struct SGDescriptor *chain_sg;
2309 if (le16_to_cpu(c->Header.SGTotal) <= h->max_cmd_sg_entries)
2312 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
2313 dma_unmap_single(&h->pdev->dev, le64_to_cpu(chain_sg->Addr),
2314 le32_to_cpu(chain_sg->Len), DMA_TO_DEVICE);
2318 /* Decode the various types of errors on ioaccel2 path.
2319 * Return 1 for any error that should generate a RAID path retry.
2320 * Return 0 for errors that don't require a RAID path retry.
2322 static int handle_ioaccel_mode2_error(struct ctlr_info *h,
2323 struct CommandList *c,
2324 struct scsi_cmnd *cmd,
2325 struct io_accel2_cmd *c2,
2326 struct hpsa_scsi_dev_t *dev)
2330 u32 ioaccel2_resid = 0;
2332 switch (c2->error_data.serv_response) {
2333 case IOACCEL2_SERV_RESPONSE_COMPLETE:
2334 switch (c2->error_data.status) {
2335 case IOACCEL2_STATUS_SR_TASK_COMP_GOOD:
2339 case IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND:
2340 cmd->result |= SAM_STAT_CHECK_CONDITION;
2341 if (c2->error_data.data_present !=
2342 IOACCEL2_SENSE_DATA_PRESENT) {
2343 memset(cmd->sense_buffer, 0,
2344 SCSI_SENSE_BUFFERSIZE);
2347 /* copy the sense data */
2348 data_len = c2->error_data.sense_data_len;
2349 if (data_len > SCSI_SENSE_BUFFERSIZE)
2350 data_len = SCSI_SENSE_BUFFERSIZE;
2351 if (data_len > sizeof(c2->error_data.sense_data_buff))
2353 sizeof(c2->error_data.sense_data_buff);
2354 memcpy(cmd->sense_buffer,
2355 c2->error_data.sense_data_buff, data_len);
2358 case IOACCEL2_STATUS_SR_TASK_COMP_BUSY:
2361 case IOACCEL2_STATUS_SR_TASK_COMP_RES_CON:
2364 case IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL:
2367 case IOACCEL2_STATUS_SR_TASK_COMP_ABORTED:
2375 case IOACCEL2_SERV_RESPONSE_FAILURE:
2376 switch (c2->error_data.status) {
2377 case IOACCEL2_STATUS_SR_IO_ERROR:
2378 case IOACCEL2_STATUS_SR_IO_ABORTED:
2379 case IOACCEL2_STATUS_SR_OVERRUN:
2382 case IOACCEL2_STATUS_SR_UNDERRUN:
2383 cmd->result = (DID_OK << 16); /* host byte */
2384 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
2385 ioaccel2_resid = get_unaligned_le32(
2386 &c2->error_data.resid_cnt[0]);
2387 scsi_set_resid(cmd, ioaccel2_resid);
2389 case IOACCEL2_STATUS_SR_NO_PATH_TO_DEVICE:
2390 case IOACCEL2_STATUS_SR_INVALID_DEVICE:
2391 case IOACCEL2_STATUS_SR_IOACCEL_DISABLED:
2393 * Did an HBA disk disappear? We will eventually
2394 * get a state change event from the controller but
2395 * in the meantime, we need to tell the OS that the
2396 * HBA disk is no longer there and stop I/O
2397 * from going down. This allows the potential re-insert
2398 * of the disk to get the same device node.
2400 if (dev->physical_device && dev->expose_device) {
2401 cmd->result = DID_NO_CONNECT << 16;
2403 h->drv_req_rescan = 1;
2404 dev_warn(&h->pdev->dev,
2405 "%s: device is gone!\n", __func__);
2408 * Retry by sending down the RAID path.
2409 * We will get an event from ctlr to
2410 * trigger rescan regardless.
2418 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
2420 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
2422 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
2425 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
2435 return retry; /* retry on raid path? */
2438 static void hpsa_cmd_resolve_events(struct ctlr_info *h,
2439 struct CommandList *c)
2441 struct hpsa_scsi_dev_t *dev = c->device;
2444 * Reset c->scsi_cmd here so that the reset handler will know
2445 * this command has completed. Then, check to see if the handler is
2446 * waiting for this command, and, if so, wake it.
2448 c->scsi_cmd = SCSI_CMD_IDLE;
2449 mb(); /* Declare command idle before checking for pending events. */
2451 atomic_dec(&dev->commands_outstanding);
2452 if (dev->in_reset &&
2453 atomic_read(&dev->commands_outstanding) <= 0)
2454 wake_up_all(&h->event_sync_wait_queue);
2458 static void hpsa_cmd_resolve_and_free(struct ctlr_info *h,
2459 struct CommandList *c)
2461 hpsa_cmd_resolve_events(h, c);
2462 cmd_tagged_free(h, c);
2465 static void hpsa_cmd_free_and_done(struct ctlr_info *h,
2466 struct CommandList *c, struct scsi_cmnd *cmd)
2468 hpsa_cmd_resolve_and_free(h, c);
2469 if (cmd && cmd->scsi_done)
2470 cmd->scsi_done(cmd);
2473 static void hpsa_retry_cmd(struct ctlr_info *h, struct CommandList *c)
2475 INIT_WORK(&c->work, hpsa_command_resubmit_worker);
2476 queue_work_on(raw_smp_processor_id(), h->resubmit_wq, &c->work);
2479 static void process_ioaccel2_completion(struct ctlr_info *h,
2480 struct CommandList *c, struct scsi_cmnd *cmd,
2481 struct hpsa_scsi_dev_t *dev)
2483 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
2485 /* check for good status */
2486 if (likely(c2->error_data.serv_response == 0 &&
2487 c2->error_data.status == 0)) {
2489 return hpsa_cmd_free_and_done(h, c, cmd);
2493 * Any RAID offload error results in retry which will use
2494 * the normal I/O path so the controller can handle whatever is
2497 if (is_logical_device(dev) &&
2498 c2->error_data.serv_response ==
2499 IOACCEL2_SERV_RESPONSE_FAILURE) {
2500 if (c2->error_data.status ==
2501 IOACCEL2_STATUS_SR_IOACCEL_DISABLED) {
2502 dev->offload_enabled = 0;
2503 dev->offload_to_be_enabled = 0;
2506 if (dev->in_reset) {
2507 cmd->result = DID_RESET << 16;
2508 return hpsa_cmd_free_and_done(h, c, cmd);
2511 return hpsa_retry_cmd(h, c);
2514 if (handle_ioaccel_mode2_error(h, c, cmd, c2, dev))
2515 return hpsa_retry_cmd(h, c);
2517 return hpsa_cmd_free_and_done(h, c, cmd);
2520 /* Returns 0 on success, < 0 otherwise. */
2521 static int hpsa_evaluate_tmf_status(struct ctlr_info *h,
2522 struct CommandList *cp)
2524 u8 tmf_status = cp->err_info->ScsiStatus;
2526 switch (tmf_status) {
2527 case CISS_TMF_COMPLETE:
2529 * CISS_TMF_COMPLETE never happens, instead,
2530 * ei->CommandStatus == 0 for this case.
2532 case CISS_TMF_SUCCESS:
2534 case CISS_TMF_INVALID_FRAME:
2535 case CISS_TMF_NOT_SUPPORTED:
2536 case CISS_TMF_FAILED:
2537 case CISS_TMF_WRONG_LUN:
2538 case CISS_TMF_OVERLAPPED_TAG:
2541 dev_warn(&h->pdev->dev, "Unknown TMF status: 0x%02x\n",
2548 static void complete_scsi_command(struct CommandList *cp)
2550 struct scsi_cmnd *cmd;
2551 struct ctlr_info *h;
2552 struct ErrorInfo *ei;
2553 struct hpsa_scsi_dev_t *dev;
2554 struct io_accel2_cmd *c2;
2557 u8 asc; /* additional sense code */
2558 u8 ascq; /* additional sense code qualifier */
2559 unsigned long sense_data_size;
2566 cmd->result = DID_NO_CONNECT << 16;
2567 return hpsa_cmd_free_and_done(h, cp, cmd);
2570 dev = cmd->device->hostdata;
2572 cmd->result = DID_NO_CONNECT << 16;
2573 return hpsa_cmd_free_and_done(h, cp, cmd);
2575 c2 = &h->ioaccel2_cmd_pool[cp->cmdindex];
2577 scsi_dma_unmap(cmd); /* undo the DMA mappings */
2578 if ((cp->cmd_type == CMD_SCSI) &&
2579 (le16_to_cpu(cp->Header.SGTotal) > h->max_cmd_sg_entries))
2580 hpsa_unmap_sg_chain_block(h, cp);
2582 if ((cp->cmd_type == CMD_IOACCEL2) &&
2583 (c2->sg[0].chain_indicator == IOACCEL2_CHAIN))
2584 hpsa_unmap_ioaccel2_sg_chain_block(h, c2);
2586 cmd->result = (DID_OK << 16); /* host byte */
2587 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
2589 /* SCSI command has already been cleaned up in SML */
2590 if (dev->was_removed) {
2591 hpsa_cmd_resolve_and_free(h, cp);
2595 if (cp->cmd_type == CMD_IOACCEL2 || cp->cmd_type == CMD_IOACCEL1) {
2596 if (dev->physical_device && dev->expose_device &&
2598 cmd->result = DID_NO_CONNECT << 16;
2599 return hpsa_cmd_free_and_done(h, cp, cmd);
2601 if (likely(cp->phys_disk != NULL))
2602 atomic_dec(&cp->phys_disk->ioaccel_cmds_out);
2606 * We check for lockup status here as it may be set for
2607 * CMD_SCSI, CMD_IOACCEL1 and CMD_IOACCEL2 commands by
2608 * fail_all_oustanding_cmds()
2610 if (unlikely(ei->CommandStatus == CMD_CTLR_LOCKUP)) {
2611 /* DID_NO_CONNECT will prevent a retry */
2612 cmd->result = DID_NO_CONNECT << 16;
2613 return hpsa_cmd_free_and_done(h, cp, cmd);
2616 if (cp->cmd_type == CMD_IOACCEL2)
2617 return process_ioaccel2_completion(h, cp, cmd, dev);
2619 scsi_set_resid(cmd, ei->ResidualCnt);
2620 if (ei->CommandStatus == 0)
2621 return hpsa_cmd_free_and_done(h, cp, cmd);
2623 /* For I/O accelerator commands, copy over some fields to the normal
2624 * CISS header used below for error handling.
2626 if (cp->cmd_type == CMD_IOACCEL1) {
2627 struct io_accel1_cmd *c = &h->ioaccel_cmd_pool[cp->cmdindex];
2628 cp->Header.SGList = scsi_sg_count(cmd);
2629 cp->Header.SGTotal = cpu_to_le16(cp->Header.SGList);
2630 cp->Request.CDBLen = le16_to_cpu(c->io_flags) &
2631 IOACCEL1_IOFLAGS_CDBLEN_MASK;
2632 cp->Header.tag = c->tag;
2633 memcpy(cp->Header.LUN.LunAddrBytes, c->CISS_LUN, 8);
2634 memcpy(cp->Request.CDB, c->CDB, cp->Request.CDBLen);
2636 /* Any RAID offload error results in retry which will use
2637 * the normal I/O path so the controller can handle whatever's
2640 if (is_logical_device(dev)) {
2641 if (ei->CommandStatus == CMD_IOACCEL_DISABLED)
2642 dev->offload_enabled = 0;
2643 return hpsa_retry_cmd(h, cp);
2647 /* an error has occurred */
2648 switch (ei->CommandStatus) {
2650 case CMD_TARGET_STATUS:
2651 cmd->result |= ei->ScsiStatus;
2652 /* copy the sense data */
2653 if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo))
2654 sense_data_size = SCSI_SENSE_BUFFERSIZE;
2656 sense_data_size = sizeof(ei->SenseInfo);
2657 if (ei->SenseLen < sense_data_size)
2658 sense_data_size = ei->SenseLen;
2659 memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size);
2661 decode_sense_data(ei->SenseInfo, sense_data_size,
2662 &sense_key, &asc, &ascq);
2663 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
2664 switch (sense_key) {
2665 case ABORTED_COMMAND:
2666 cmd->result |= DID_SOFT_ERROR << 16;
2668 case UNIT_ATTENTION:
2669 if (asc == 0x3F && ascq == 0x0E)
2670 h->drv_req_rescan = 1;
2672 case ILLEGAL_REQUEST:
2673 if (asc == 0x25 && ascq == 0x00) {
2675 cmd->result = DID_NO_CONNECT << 16;
2681 /* Problem was not a check condition
2682 * Pass it up to the upper layers...
2684 if (ei->ScsiStatus) {
2685 dev_warn(&h->pdev->dev, "cp %p has status 0x%x "
2686 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
2687 "Returning result: 0x%x\n",
2689 sense_key, asc, ascq,
2691 } else { /* scsi status is zero??? How??? */
2692 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. "
2693 "Returning no connection.\n", cp),
2695 /* Ordinarily, this case should never happen,
2696 * but there is a bug in some released firmware
2697 * revisions that allows it to happen if, for
2698 * example, a 4100 backplane loses power and
2699 * the tape drive is in it. We assume that
2700 * it's a fatal error of some kind because we
2701 * can't show that it wasn't. We will make it
2702 * look like selection timeout since that is
2703 * the most common reason for this to occur,
2704 * and it's severe enough.
2707 cmd->result = DID_NO_CONNECT << 16;
2711 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
2713 case CMD_DATA_OVERRUN:
2714 dev_warn(&h->pdev->dev,
2715 "CDB %16phN data overrun\n", cp->Request.CDB);
2718 /* print_bytes(cp, sizeof(*cp), 1, 0);
2720 /* We get CMD_INVALID if you address a non-existent device
2721 * instead of a selection timeout (no response). You will
2722 * see this if you yank out a drive, then try to access it.
2723 * This is kind of a shame because it means that any other
2724 * CMD_INVALID (e.g. driver bug) will get interpreted as a
2725 * missing target. */
2726 cmd->result = DID_NO_CONNECT << 16;
2729 case CMD_PROTOCOL_ERR:
2730 cmd->result = DID_ERROR << 16;
2731 dev_warn(&h->pdev->dev, "CDB %16phN : protocol error\n",
2734 case CMD_HARDWARE_ERR:
2735 cmd->result = DID_ERROR << 16;
2736 dev_warn(&h->pdev->dev, "CDB %16phN : hardware error\n",
2739 case CMD_CONNECTION_LOST:
2740 cmd->result = DID_ERROR << 16;
2741 dev_warn(&h->pdev->dev, "CDB %16phN : connection lost\n",
2745 cmd->result = DID_ABORT << 16;
2747 case CMD_ABORT_FAILED:
2748 cmd->result = DID_ERROR << 16;
2749 dev_warn(&h->pdev->dev, "CDB %16phN : abort failed\n",
2752 case CMD_UNSOLICITED_ABORT:
2753 cmd->result = DID_SOFT_ERROR << 16; /* retry the command */
2754 dev_warn(&h->pdev->dev, "CDB %16phN : unsolicited abort\n",
2758 cmd->result = DID_TIME_OUT << 16;
2759 dev_warn(&h->pdev->dev, "CDB %16phN timed out\n",
2762 case CMD_UNABORTABLE:
2763 cmd->result = DID_ERROR << 16;
2764 dev_warn(&h->pdev->dev, "Command unabortable\n");
2766 case CMD_TMF_STATUS:
2767 if (hpsa_evaluate_tmf_status(h, cp)) /* TMF failed? */
2768 cmd->result = DID_ERROR << 16;
2770 case CMD_IOACCEL_DISABLED:
2771 /* This only handles the direct pass-through case since RAID
2772 * offload is handled above. Just attempt a retry.
2774 cmd->result = DID_SOFT_ERROR << 16;
2775 dev_warn(&h->pdev->dev,
2776 "cp %p had HP SSD Smart Path error\n", cp);
2779 cmd->result = DID_ERROR << 16;
2780 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n",
2781 cp, ei->CommandStatus);
2784 return hpsa_cmd_free_and_done(h, cp, cmd);
2787 static void hpsa_pci_unmap(struct pci_dev *pdev, struct CommandList *c,
2788 int sg_used, enum dma_data_direction data_direction)
2792 for (i = 0; i < sg_used; i++)
2793 dma_unmap_single(&pdev->dev, le64_to_cpu(c->SG[i].Addr),
2794 le32_to_cpu(c->SG[i].Len),
2798 static int hpsa_map_one(struct pci_dev *pdev,
2799 struct CommandList *cp,
2802 enum dma_data_direction data_direction)
2806 if (buflen == 0 || data_direction == DMA_NONE) {
2807 cp->Header.SGList = 0;
2808 cp->Header.SGTotal = cpu_to_le16(0);
2812 addr64 = dma_map_single(&pdev->dev, buf, buflen, data_direction);
2813 if (dma_mapping_error(&pdev->dev, addr64)) {
2814 /* Prevent subsequent unmap of something never mapped */
2815 cp->Header.SGList = 0;
2816 cp->Header.SGTotal = cpu_to_le16(0);
2819 cp->SG[0].Addr = cpu_to_le64(addr64);
2820 cp->SG[0].Len = cpu_to_le32(buflen);
2821 cp->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* we are not chaining */
2822 cp->Header.SGList = 1; /* no. SGs contig in this cmd */
2823 cp->Header.SGTotal = cpu_to_le16(1); /* total sgs in cmd list */
2827 #define NO_TIMEOUT ((unsigned long) -1)
2828 #define DEFAULT_TIMEOUT 30000 /* milliseconds */
2829 static int hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h,
2830 struct CommandList *c, int reply_queue, unsigned long timeout_msecs)
2832 DECLARE_COMPLETION_ONSTACK(wait);
2835 __enqueue_cmd_and_start_io(h, c, reply_queue);
2836 if (timeout_msecs == NO_TIMEOUT) {
2837 /* TODO: get rid of this no-timeout thing */
2838 wait_for_completion_io(&wait);
2841 if (!wait_for_completion_io_timeout(&wait,
2842 msecs_to_jiffies(timeout_msecs))) {
2843 dev_warn(&h->pdev->dev, "Command timed out.\n");
2849 static int hpsa_scsi_do_simple_cmd(struct ctlr_info *h, struct CommandList *c,
2850 int reply_queue, unsigned long timeout_msecs)
2852 if (unlikely(lockup_detected(h))) {
2853 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
2856 return hpsa_scsi_do_simple_cmd_core(h, c, reply_queue, timeout_msecs);
2859 static u32 lockup_detected(struct ctlr_info *h)
2862 u32 rc, *lockup_detected;
2865 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
2866 rc = *lockup_detected;
2871 #define MAX_DRIVER_CMD_RETRIES 25
2872 static int hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
2873 struct CommandList *c, enum dma_data_direction data_direction,
2874 unsigned long timeout_msecs)
2876 int backoff_time = 10, retry_count = 0;
2880 memset(c->err_info, 0, sizeof(*c->err_info));
2881 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
2886 if (retry_count > 3) {
2887 msleep(backoff_time);
2888 if (backoff_time < 1000)
2891 } while ((check_for_unit_attention(h, c) ||
2892 check_for_busy(h, c)) &&
2893 retry_count <= MAX_DRIVER_CMD_RETRIES);
2894 hpsa_pci_unmap(h->pdev, c, 1, data_direction);
2895 if (retry_count > MAX_DRIVER_CMD_RETRIES)
2900 static void hpsa_print_cmd(struct ctlr_info *h, char *txt,
2901 struct CommandList *c)
2903 const u8 *cdb = c->Request.CDB;
2904 const u8 *lun = c->Header.LUN.LunAddrBytes;
2906 dev_warn(&h->pdev->dev, "%s: LUN:%8phN CDB:%16phN\n",
2910 static void hpsa_scsi_interpret_error(struct ctlr_info *h,
2911 struct CommandList *cp)
2913 const struct ErrorInfo *ei = cp->err_info;
2914 struct device *d = &cp->h->pdev->dev;
2915 u8 sense_key, asc, ascq;
2918 switch (ei->CommandStatus) {
2919 case CMD_TARGET_STATUS:
2920 if (ei->SenseLen > sizeof(ei->SenseInfo))
2921 sense_len = sizeof(ei->SenseInfo);
2923 sense_len = ei->SenseLen;
2924 decode_sense_data(ei->SenseInfo, sense_len,
2925 &sense_key, &asc, &ascq);
2926 hpsa_print_cmd(h, "SCSI status", cp);
2927 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION)
2928 dev_warn(d, "SCSI Status = 02, Sense key = 0x%02x, ASC = 0x%02x, ASCQ = 0x%02x\n",
2929 sense_key, asc, ascq);
2931 dev_warn(d, "SCSI Status = 0x%02x\n", ei->ScsiStatus);
2932 if (ei->ScsiStatus == 0)
2933 dev_warn(d, "SCSI status is abnormally zero. "
2934 "(probably indicates selection timeout "
2935 "reported incorrectly due to a known "
2936 "firmware bug, circa July, 2001.)\n");
2938 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
2940 case CMD_DATA_OVERRUN:
2941 hpsa_print_cmd(h, "overrun condition", cp);
2944 /* controller unfortunately reports SCSI passthru's
2945 * to non-existent targets as invalid commands.
2947 hpsa_print_cmd(h, "invalid command", cp);
2948 dev_warn(d, "probably means device no longer present\n");
2951 case CMD_PROTOCOL_ERR:
2952 hpsa_print_cmd(h, "protocol error", cp);
2954 case CMD_HARDWARE_ERR:
2955 hpsa_print_cmd(h, "hardware error", cp);
2957 case CMD_CONNECTION_LOST:
2958 hpsa_print_cmd(h, "connection lost", cp);
2961 hpsa_print_cmd(h, "aborted", cp);
2963 case CMD_ABORT_FAILED:
2964 hpsa_print_cmd(h, "abort failed", cp);
2966 case CMD_UNSOLICITED_ABORT:
2967 hpsa_print_cmd(h, "unsolicited abort", cp);
2970 hpsa_print_cmd(h, "timed out", cp);
2972 case CMD_UNABORTABLE:
2973 hpsa_print_cmd(h, "unabortable", cp);
2975 case CMD_CTLR_LOCKUP:
2976 hpsa_print_cmd(h, "controller lockup detected", cp);
2979 hpsa_print_cmd(h, "unknown status", cp);
2980 dev_warn(d, "Unknown command status %x\n",
2985 static int hpsa_do_receive_diagnostic(struct ctlr_info *h, u8 *scsi3addr,
2986 u8 page, u8 *buf, size_t bufsize)
2989 struct CommandList *c;
2990 struct ErrorInfo *ei;
2993 if (fill_cmd(c, RECEIVE_DIAGNOSTIC, h, buf, bufsize,
2994 page, scsi3addr, TYPE_CMD)) {
2998 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3003 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3004 hpsa_scsi_interpret_error(h, c);
3012 static u64 hpsa_get_enclosure_logical_identifier(struct ctlr_info *h,
3019 buf = kzalloc(1024, GFP_KERNEL);
3023 rc = hpsa_do_receive_diagnostic(h, scsi3addr, RECEIVE_DIAGNOSTIC,
3029 sa = get_unaligned_be64(buf+12);
3036 static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
3037 u16 page, unsigned char *buf,
3038 unsigned char bufsize)
3041 struct CommandList *c;
3042 struct ErrorInfo *ei;
3046 if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize,
3047 page, scsi3addr, TYPE_CMD)) {
3051 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3056 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3057 hpsa_scsi_interpret_error(h, c);
3065 static int hpsa_send_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev,
3066 u8 reset_type, int reply_queue)
3069 struct CommandList *c;
3070 struct ErrorInfo *ei;
3075 /* fill_cmd can't fail here, no data buffer to map. */
3076 (void) fill_cmd(c, reset_type, h, NULL, 0, 0, dev->scsi3addr, TYPE_MSG);
3077 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
3079 dev_warn(&h->pdev->dev, "Failed to send reset command\n");
3082 /* no unmap needed here because no data xfer. */
3085 if (ei->CommandStatus != 0) {
3086 hpsa_scsi_interpret_error(h, c);
3094 static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c,
3095 struct hpsa_scsi_dev_t *dev,
3096 unsigned char *scsi3addr)
3100 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
3101 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
3103 if (hpsa_is_cmd_idle(c))
3106 switch (c->cmd_type) {
3108 case CMD_IOCTL_PEND:
3109 match = !memcmp(scsi3addr, &c->Header.LUN.LunAddrBytes,
3110 sizeof(c->Header.LUN.LunAddrBytes));
3115 if (c->phys_disk == dev) {
3116 /* HBA mode match */
3119 /* Possible RAID mode -- check each phys dev. */
3120 /* FIXME: Do we need to take out a lock here? If
3121 * so, we could just call hpsa_get_pdisk_of_ioaccel2()
3123 for (i = 0; i < dev->nphysical_disks && !match; i++) {
3124 /* FIXME: an alternate test might be
3126 * match = dev->phys_disk[i]->ioaccel_handle
3127 * == c2->scsi_nexus; */
3128 match = dev->phys_disk[i] == c->phys_disk;
3134 for (i = 0; i < dev->nphysical_disks && !match; i++) {
3135 match = dev->phys_disk[i]->ioaccel_handle ==
3136 le32_to_cpu(ac->it_nexus);
3140 case 0: /* The command is in the middle of being initialized. */
3145 dev_err(&h->pdev->dev, "unexpected cmd_type: %d\n",
3153 static int hpsa_do_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev,
3154 u8 reset_type, int reply_queue)
3158 /* We can really only handle one reset at a time */
3159 if (mutex_lock_interruptible(&h->reset_mutex) == -EINTR) {
3160 dev_warn(&h->pdev->dev, "concurrent reset wait interrupted.\n");
3164 rc = hpsa_send_reset(h, dev, reset_type, reply_queue);
3166 /* incremented by sending the reset request */
3167 atomic_dec(&dev->commands_outstanding);
3168 wait_event(h->event_sync_wait_queue,
3169 atomic_read(&dev->commands_outstanding) <= 0 ||
3170 lockup_detected(h));
3173 if (unlikely(lockup_detected(h))) {
3174 dev_warn(&h->pdev->dev,
3175 "Controller lockup detected during reset wait\n");
3180 rc = wait_for_device_to_become_ready(h, dev->scsi3addr, 0);
3182 mutex_unlock(&h->reset_mutex);
3186 static void hpsa_get_raid_level(struct ctlr_info *h,
3187 unsigned char *scsi3addr, unsigned char *raid_level)
3192 *raid_level = RAID_UNKNOWN;
3193 buf = kzalloc(64, GFP_KERNEL);
3197 if (!hpsa_vpd_page_supported(h, scsi3addr,
3198 HPSA_VPD_LV_DEVICE_GEOMETRY))
3201 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE |
3202 HPSA_VPD_LV_DEVICE_GEOMETRY, buf, 64);
3205 *raid_level = buf[8];
3206 if (*raid_level > RAID_UNKNOWN)
3207 *raid_level = RAID_UNKNOWN;
3213 #define HPSA_MAP_DEBUG
3214 #ifdef HPSA_MAP_DEBUG
3215 static void hpsa_debug_map_buff(struct ctlr_info *h, int rc,
3216 struct raid_map_data *map_buff)
3218 struct raid_map_disk_data *dd = &map_buff->data[0];
3220 u16 map_cnt, row_cnt, disks_per_row;
3225 /* Show details only if debugging has been activated. */
3226 if (h->raid_offload_debug < 2)
3229 dev_info(&h->pdev->dev, "structure_size = %u\n",
3230 le32_to_cpu(map_buff->structure_size));
3231 dev_info(&h->pdev->dev, "volume_blk_size = %u\n",
3232 le32_to_cpu(map_buff->volume_blk_size));
3233 dev_info(&h->pdev->dev, "volume_blk_cnt = 0x%llx\n",
3234 le64_to_cpu(map_buff->volume_blk_cnt));
3235 dev_info(&h->pdev->dev, "physicalBlockShift = %u\n",
3236 map_buff->phys_blk_shift);
3237 dev_info(&h->pdev->dev, "parity_rotation_shift = %u\n",
3238 map_buff->parity_rotation_shift);
3239 dev_info(&h->pdev->dev, "strip_size = %u\n",
3240 le16_to_cpu(map_buff->strip_size));
3241 dev_info(&h->pdev->dev, "disk_starting_blk = 0x%llx\n",
3242 le64_to_cpu(map_buff->disk_starting_blk));
3243 dev_info(&h->pdev->dev, "disk_blk_cnt = 0x%llx\n",
3244 le64_to_cpu(map_buff->disk_blk_cnt));
3245 dev_info(&h->pdev->dev, "data_disks_per_row = %u\n",
3246 le16_to_cpu(map_buff->data_disks_per_row));
3247 dev_info(&h->pdev->dev, "metadata_disks_per_row = %u\n",
3248 le16_to_cpu(map_buff->metadata_disks_per_row));
3249 dev_info(&h->pdev->dev, "row_cnt = %u\n",
3250 le16_to_cpu(map_buff->row_cnt));
3251 dev_info(&h->pdev->dev, "layout_map_count = %u\n",
3252 le16_to_cpu(map_buff->layout_map_count));
3253 dev_info(&h->pdev->dev, "flags = 0x%x\n",
3254 le16_to_cpu(map_buff->flags));
3255 dev_info(&h->pdev->dev, "encryption = %s\n",
3256 le16_to_cpu(map_buff->flags) &
3257 RAID_MAP_FLAG_ENCRYPT_ON ? "ON" : "OFF");
3258 dev_info(&h->pdev->dev, "dekindex = %u\n",
3259 le16_to_cpu(map_buff->dekindex));
3260 map_cnt = le16_to_cpu(map_buff->layout_map_count);
3261 for (map = 0; map < map_cnt; map++) {
3262 dev_info(&h->pdev->dev, "Map%u:\n", map);
3263 row_cnt = le16_to_cpu(map_buff->row_cnt);
3264 for (row = 0; row < row_cnt; row++) {
3265 dev_info(&h->pdev->dev, " Row%u:\n", row);
3267 le16_to_cpu(map_buff->data_disks_per_row);
3268 for (col = 0; col < disks_per_row; col++, dd++)
3269 dev_info(&h->pdev->dev,
3270 " D%02u: h=0x%04x xor=%u,%u\n",
3271 col, dd->ioaccel_handle,
3272 dd->xor_mult[0], dd->xor_mult[1]);
3274 le16_to_cpu(map_buff->metadata_disks_per_row);
3275 for (col = 0; col < disks_per_row; col++, dd++)
3276 dev_info(&h->pdev->dev,
3277 " M%02u: h=0x%04x xor=%u,%u\n",
3278 col, dd->ioaccel_handle,
3279 dd->xor_mult[0], dd->xor_mult[1]);
3284 static void hpsa_debug_map_buff(__attribute__((unused)) struct ctlr_info *h,
3285 __attribute__((unused)) int rc,
3286 __attribute__((unused)) struct raid_map_data *map_buff)
3291 static int hpsa_get_raid_map(struct ctlr_info *h,
3292 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
3295 struct CommandList *c;
3296 struct ErrorInfo *ei;
3300 if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map,
3301 sizeof(this_device->raid_map), 0,
3302 scsi3addr, TYPE_CMD)) {
3303 dev_warn(&h->pdev->dev, "hpsa_get_raid_map fill_cmd failed\n");
3307 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3312 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3313 hpsa_scsi_interpret_error(h, c);
3319 /* @todo in the future, dynamically allocate RAID map memory */
3320 if (le32_to_cpu(this_device->raid_map.structure_size) >
3321 sizeof(this_device->raid_map)) {
3322 dev_warn(&h->pdev->dev, "RAID map size is too large!\n");
3325 hpsa_debug_map_buff(h, rc, &this_device->raid_map);
3332 static int hpsa_bmic_sense_subsystem_information(struct ctlr_info *h,
3333 unsigned char scsi3addr[], u16 bmic_device_index,
3334 struct bmic_sense_subsystem_info *buf, size_t bufsize)
3337 struct CommandList *c;
3338 struct ErrorInfo *ei;
3342 rc = fill_cmd(c, BMIC_SENSE_SUBSYSTEM_INFORMATION, h, buf, bufsize,
3343 0, RAID_CTLR_LUNID, TYPE_CMD);
3347 c->Request.CDB[2] = bmic_device_index & 0xff;
3348 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;
3350 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3355 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3356 hpsa_scsi_interpret_error(h, c);
3364 static int hpsa_bmic_id_controller(struct ctlr_info *h,
3365 struct bmic_identify_controller *buf, size_t bufsize)
3368 struct CommandList *c;
3369 struct ErrorInfo *ei;
3373 rc = fill_cmd(c, BMIC_IDENTIFY_CONTROLLER, h, buf, bufsize,
3374 0, RAID_CTLR_LUNID, TYPE_CMD);
3378 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3383 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3384 hpsa_scsi_interpret_error(h, c);
3392 static int hpsa_bmic_id_physical_device(struct ctlr_info *h,
3393 unsigned char scsi3addr[], u16 bmic_device_index,
3394 struct bmic_identify_physical_device *buf, size_t bufsize)
3397 struct CommandList *c;
3398 struct ErrorInfo *ei;
3401 rc = fill_cmd(c, BMIC_IDENTIFY_PHYSICAL_DEVICE, h, buf, bufsize,
3402 0, RAID_CTLR_LUNID, TYPE_CMD);
3406 c->Request.CDB[2] = bmic_device_index & 0xff;
3407 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;
3409 hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3412 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3413 hpsa_scsi_interpret_error(h, c);
3423 * get enclosure information
3424 * struct ReportExtendedLUNdata *rlep - Used for BMIC drive number
3425 * struct hpsa_scsi_dev_t *encl_dev - device entry for enclosure
3426 * Uses id_physical_device to determine the box_index.
3428 static void hpsa_get_enclosure_info(struct ctlr_info *h,
3429 unsigned char *scsi3addr,
3430 struct ReportExtendedLUNdata *rlep, int rle_index,
3431 struct hpsa_scsi_dev_t *encl_dev)
3434 struct CommandList *c = NULL;
3435 struct ErrorInfo *ei = NULL;
3436 struct bmic_sense_storage_box_params *bssbp = NULL;
3437 struct bmic_identify_physical_device *id_phys = NULL;
3438 struct ext_report_lun_entry *rle = &rlep->LUN[rle_index];
3439 u16 bmic_device_index = 0;
3442 hpsa_get_enclosure_logical_identifier(h, scsi3addr);
3444 bmic_device_index = GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]);
3446 if (encl_dev->target == -1 || encl_dev->lun == -1) {
3451 if (bmic_device_index == 0xFF00 || MASKED_DEVICE(&rle->lunid[0])) {
3456 bssbp = kzalloc(sizeof(*bssbp), GFP_KERNEL);
3460 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
3464 rc = hpsa_bmic_id_physical_device(h, scsi3addr, bmic_device_index,
3465 id_phys, sizeof(*id_phys));
3467 dev_warn(&h->pdev->dev, "%s: id_phys failed %d bdi[0x%x]\n",
3468 __func__, encl_dev->external, bmic_device_index);
3474 rc = fill_cmd(c, BMIC_SENSE_STORAGE_BOX_PARAMS, h, bssbp,
3475 sizeof(*bssbp), 0, RAID_CTLR_LUNID, TYPE_CMD);
3480 if (id_phys->phys_connector[1] == 'E')
3481 c->Request.CDB[5] = id_phys->box_index;
3483 c->Request.CDB[5] = 0;
3485 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3491 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3496 encl_dev->box[id_phys->active_path_number] = bssbp->phys_box_on_port;
3497 memcpy(&encl_dev->phys_connector[id_phys->active_path_number],
3498 bssbp->phys_connector, sizeof(bssbp->phys_connector));
3509 hpsa_show_dev_msg(KERN_INFO, h, encl_dev,
3510 "Error, could not get enclosure information");
3513 static u64 hpsa_get_sas_address_from_report_physical(struct ctlr_info *h,
3514 unsigned char *scsi3addr)
3516 struct ReportExtendedLUNdata *physdev;
3521 physdev = kzalloc(sizeof(*physdev), GFP_KERNEL);
3525 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
3526 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
3530 nphysicals = get_unaligned_be32(physdev->LUNListLength) / 24;
3532 for (i = 0; i < nphysicals; i++)
3533 if (!memcmp(&physdev->LUN[i].lunid[0], scsi3addr, 8)) {
3534 sa = get_unaligned_be64(&physdev->LUN[i].wwid[0]);
3543 static void hpsa_get_sas_address(struct ctlr_info *h, unsigned char *scsi3addr,
3544 struct hpsa_scsi_dev_t *dev)
3549 if (is_hba_lunid(scsi3addr)) {
3550 struct bmic_sense_subsystem_info *ssi;
3552 ssi = kzalloc(sizeof(*ssi), GFP_KERNEL);
3556 rc = hpsa_bmic_sense_subsystem_information(h,
3557 scsi3addr, 0, ssi, sizeof(*ssi));
3559 sa = get_unaligned_be64(ssi->primary_world_wide_id);
3560 h->sas_address = sa;
3565 sa = hpsa_get_sas_address_from_report_physical(h, scsi3addr);
3567 dev->sas_address = sa;
3570 static void hpsa_ext_ctrl_present(struct ctlr_info *h,
3571 struct ReportExtendedLUNdata *physdev)
3576 if (h->discovery_polling)
3579 nphysicals = (get_unaligned_be32(physdev->LUNListLength) / 24) + 1;
3581 for (i = 0; i < nphysicals; i++) {
3582 if (physdev->LUN[i].device_type ==
3583 BMIC_DEVICE_TYPE_CONTROLLER
3584 && !is_hba_lunid(physdev->LUN[i].lunid)) {
3585 dev_info(&h->pdev->dev,
3586 "External controller present, activate discovery polling and disable rld caching\n");
3587 hpsa_disable_rld_caching(h);
3588 h->discovery_polling = 1;
3594 /* Get a device id from inquiry page 0x83 */
3595 static bool hpsa_vpd_page_supported(struct ctlr_info *h,
3596 unsigned char scsi3addr[], u8 page)
3601 unsigned char *buf, bufsize;
3603 buf = kzalloc(256, GFP_KERNEL);
3607 /* Get the size of the page list first */
3608 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3609 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3610 buf, HPSA_VPD_HEADER_SZ);
3612 goto exit_unsupported;
3614 if ((pages + HPSA_VPD_HEADER_SZ) <= 255)
3615 bufsize = pages + HPSA_VPD_HEADER_SZ;
3619 /* Get the whole VPD page list */
3620 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3621 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3624 goto exit_unsupported;
3627 for (i = 1; i <= pages; i++)
3628 if (buf[3 + i] == page)
3629 goto exit_supported;
3639 * Called during a scan operation.
3640 * Sets ioaccel status on the new device list, not the existing device list
3642 * The device list used during I/O will be updated later in
3643 * adjust_hpsa_scsi_table.
3645 static void hpsa_get_ioaccel_status(struct ctlr_info *h,
3646 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
3652 this_device->offload_config = 0;
3653 this_device->offload_enabled = 0;
3654 this_device->offload_to_be_enabled = 0;
3656 buf = kzalloc(64, GFP_KERNEL);
3659 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_IOACCEL_STATUS))
3661 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3662 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, buf, 64);
3666 #define IOACCEL_STATUS_BYTE 4
3667 #define OFFLOAD_CONFIGURED_BIT 0x01
3668 #define OFFLOAD_ENABLED_BIT 0x02
3669 ioaccel_status = buf[IOACCEL_STATUS_BYTE];
3670 this_device->offload_config =
3671 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT);
3672 if (this_device->offload_config) {
3673 this_device->offload_to_be_enabled =
3674 !!(ioaccel_status & OFFLOAD_ENABLED_BIT);
3675 if (hpsa_get_raid_map(h, scsi3addr, this_device))
3676 this_device->offload_to_be_enabled = 0;
3684 /* Get the device id from inquiry page 0x83 */
3685 static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr,
3686 unsigned char *device_id, int index, int buflen)
3691 /* Does controller have VPD for device id? */
3692 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_DEVICE_ID))
3693 return 1; /* not supported */
3695 buf = kzalloc(64, GFP_KERNEL);
3699 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE |
3700 HPSA_VPD_LV_DEVICE_ID, buf, 64);
3704 memcpy(device_id, &buf[8], buflen);
3709 return rc; /*0 - got id, otherwise, didn't */
3712 static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
3713 void *buf, int bufsize,
3714 int extended_response)
3717 struct CommandList *c;
3718 unsigned char scsi3addr[8];
3719 struct ErrorInfo *ei;
3723 /* address the controller */
3724 memset(scsi3addr, 0, sizeof(scsi3addr));
3725 if (fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h,
3726 buf, bufsize, 0, scsi3addr, TYPE_CMD)) {
3730 if (extended_response)
3731 c->Request.CDB[1] = extended_response;
3732 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3737 if (ei->CommandStatus != 0 &&
3738 ei->CommandStatus != CMD_DATA_UNDERRUN) {
3739 hpsa_scsi_interpret_error(h, c);
3742 struct ReportLUNdata *rld = buf;
3744 if (rld->extended_response_flag != extended_response) {
3745 if (!h->legacy_board) {
3746 dev_err(&h->pdev->dev,
3747 "report luns requested format %u, got %u\n",
3749 rld->extended_response_flag);
3760 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
3761 struct ReportExtendedLUNdata *buf, int bufsize)
3764 struct ReportLUNdata *lbuf;
3766 rc = hpsa_scsi_do_report_luns(h, 0, buf, bufsize,
3767 HPSA_REPORT_PHYS_EXTENDED);
3768 if (!rc || rc != -EOPNOTSUPP)
3771 /* REPORT PHYS EXTENDED is not supported */
3772 lbuf = kzalloc(sizeof(*lbuf), GFP_KERNEL);
3776 rc = hpsa_scsi_do_report_luns(h, 0, lbuf, sizeof(*lbuf), 0);
3781 /* Copy ReportLUNdata header */
3782 memcpy(buf, lbuf, 8);
3783 nphys = be32_to_cpu(*((__be32 *)lbuf->LUNListLength)) / 8;
3784 for (i = 0; i < nphys; i++)
3785 memcpy(buf->LUN[i].lunid, lbuf->LUN[i], 8);
3791 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,
3792 struct ReportLUNdata *buf, int bufsize)
3794 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0);
3797 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device,
3798 int bus, int target, int lun)
3801 device->target = target;
3805 /* Use VPD inquiry to get details of volume status */
3806 static int hpsa_get_volume_status(struct ctlr_info *h,
3807 unsigned char scsi3addr[])
3814 buf = kzalloc(64, GFP_KERNEL);
3816 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3818 /* Does controller have VPD for logical volume status? */
3819 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_STATUS))
3822 /* Get the size of the VPD return buffer */
3823 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3824 buf, HPSA_VPD_HEADER_SZ);
3829 /* Now get the whole VPD buffer */
3830 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3831 buf, size + HPSA_VPD_HEADER_SZ);
3834 status = buf[4]; /* status byte */
3840 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3843 /* Determine offline status of a volume.
3846 * 0xff (offline for unknown reasons)
3847 * # (integer code indicating one of several NOT READY states
3848 * describing why a volume is to be kept offline)
3850 static unsigned char hpsa_volume_offline(struct ctlr_info *h,
3851 unsigned char scsi3addr[])
3853 struct CommandList *c;
3854 unsigned char *sense;
3855 u8 sense_key, asc, ascq;
3860 #define ASC_LUN_NOT_READY 0x04
3861 #define ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS 0x04
3862 #define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02
3866 (void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD);
3867 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
3871 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3873 sense = c->err_info->SenseInfo;
3874 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
3875 sense_len = sizeof(c->err_info->SenseInfo);
3877 sense_len = c->err_info->SenseLen;
3878 decode_sense_data(sense, sense_len, &sense_key, &asc, &ascq);
3879 cmd_status = c->err_info->CommandStatus;
3880 scsi_status = c->err_info->ScsiStatus;
3883 /* Determine the reason for not ready state */
3884 ldstat = hpsa_get_volume_status(h, scsi3addr);
3886 /* Keep volume offline in certain cases: */
3888 case HPSA_LV_FAILED:
3889 case HPSA_LV_UNDERGOING_ERASE:
3890 case HPSA_LV_NOT_AVAILABLE:
3891 case HPSA_LV_UNDERGOING_RPI:
3892 case HPSA_LV_PENDING_RPI:
3893 case HPSA_LV_ENCRYPTED_NO_KEY:
3894 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
3895 case HPSA_LV_UNDERGOING_ENCRYPTION:
3896 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
3897 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
3899 case HPSA_VPD_LV_STATUS_UNSUPPORTED:
3900 /* If VPD status page isn't available,
3901 * use ASC/ASCQ to determine state
3903 if ((ascq == ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS) ||
3904 (ascq == ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ))
3913 static int hpsa_update_device_info(struct ctlr_info *h,
3914 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device,
3915 unsigned char *is_OBDR_device)
3918 #define OBDR_SIG_OFFSET 43
3919 #define OBDR_TAPE_SIG "$DR-10"
3920 #define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1)
3921 #define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN)
3923 unsigned char *inq_buff;
3924 unsigned char *obdr_sig;
3927 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
3933 /* Do an inquiry to the device to see what it is. */
3934 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
3935 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
3936 dev_err(&h->pdev->dev,
3937 "%s: inquiry failed, device will be skipped.\n",
3939 rc = HPSA_INQUIRY_FAILED;
3943 scsi_sanitize_inquiry_string(&inq_buff[8], 8);
3944 scsi_sanitize_inquiry_string(&inq_buff[16], 16);
3946 this_device->devtype = (inq_buff[0] & 0x1f);
3947 memcpy(this_device->scsi3addr, scsi3addr, 8);
3948 memcpy(this_device->vendor, &inq_buff[8],
3949 sizeof(this_device->vendor));
3950 memcpy(this_device->model, &inq_buff[16],
3951 sizeof(this_device->model));
3952 this_device->rev = inq_buff[2];
3953 memset(this_device->device_id, 0,
3954 sizeof(this_device->device_id));
3955 if (hpsa_get_device_id(h, scsi3addr, this_device->device_id, 8,
3956 sizeof(this_device->device_id)) < 0) {
3957 dev_err(&h->pdev->dev,
3958 "hpsa%d: %s: can't get device id for [%d:%d:%d:%d]\t%s\t%.16s\n",
3960 h->scsi_host->host_no,
3961 this_device->bus, this_device->target,
3963 scsi_device_type(this_device->devtype),
3964 this_device->model);
3965 rc = HPSA_LV_FAILED;
3969 if ((this_device->devtype == TYPE_DISK ||
3970 this_device->devtype == TYPE_ZBC) &&
3971 is_logical_dev_addr_mode(scsi3addr)) {
3972 unsigned char volume_offline;
3974 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level);
3975 if (h->fw_support & MISC_FW_RAID_OFFLOAD_BASIC)
3976 hpsa_get_ioaccel_status(h, scsi3addr, this_device);
3977 volume_offline = hpsa_volume_offline(h, scsi3addr);
3978 if (volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED &&
3981 * Legacy boards might not support volume status
3983 dev_info(&h->pdev->dev,
3984 "C0:T%d:L%d Volume status not available, assuming online.\n",
3985 this_device->target, this_device->lun);
3988 this_device->volume_offline = volume_offline;
3989 if (volume_offline == HPSA_LV_FAILED) {
3990 rc = HPSA_LV_FAILED;
3991 dev_err(&h->pdev->dev,
3992 "%s: LV failed, device will be skipped.\n",
3997 this_device->raid_level = RAID_UNKNOWN;
3998 this_device->offload_config = 0;
3999 this_device->offload_enabled = 0;
4000 this_device->offload_to_be_enabled = 0;
4001 this_device->hba_ioaccel_enabled = 0;
4002 this_device->volume_offline = 0;
4003 this_device->queue_depth = h->nr_cmds;
4006 if (this_device->external)
4007 this_device->queue_depth = EXTERNAL_QD;
4009 if (is_OBDR_device) {
4010 /* See if this is a One-Button-Disaster-Recovery device
4011 * by looking for "$DR-10" at offset 43 in inquiry data.
4013 obdr_sig = &inq_buff[OBDR_SIG_OFFSET];
4014 *is_OBDR_device = (this_device->devtype == TYPE_ROM &&
4015 strncmp(obdr_sig, OBDR_TAPE_SIG,
4016 OBDR_SIG_LEN) == 0);
4027 * Helper function to assign bus, target, lun mapping of devices.
4028 * Logical drive target and lun are assigned at this time, but
4029 * physical device lun and target assignment are deferred (assigned
4030 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
4032 static void figure_bus_target_lun(struct ctlr_info *h,
4033 u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device)
4035 u32 lunid = get_unaligned_le32(lunaddrbytes);
4037 if (!is_logical_dev_addr_mode(lunaddrbytes)) {
4038 /* physical device, target and lun filled in later */
4039 if (is_hba_lunid(lunaddrbytes)) {
4040 int bus = HPSA_HBA_BUS;
4043 bus = HPSA_LEGACY_HBA_BUS;
4044 hpsa_set_bus_target_lun(device,
4045 bus, 0, lunid & 0x3fff);
4047 /* defer target, lun assignment for physical devices */
4048 hpsa_set_bus_target_lun(device,
4049 HPSA_PHYSICAL_DEVICE_BUS, -1, -1);
4052 /* It's a logical device */
4053 if (device->external) {
4054 hpsa_set_bus_target_lun(device,
4055 HPSA_EXTERNAL_RAID_VOLUME_BUS, (lunid >> 16) & 0x3fff,
4059 hpsa_set_bus_target_lun(device, HPSA_RAID_VOLUME_BUS,
4063 static int figure_external_status(struct ctlr_info *h, int raid_ctlr_position,
4064 int i, int nphysicals, int nlocal_logicals)
4066 /* In report logicals, local logicals are listed first,
4067 * then any externals.
4069 int logicals_start = nphysicals + (raid_ctlr_position == 0);
4071 if (i == raid_ctlr_position)
4074 if (i < logicals_start)
4077 /* i is in logicals range, but still within local logicals */
4078 if ((i - nphysicals - (raid_ctlr_position == 0)) < nlocal_logicals)
4081 return 1; /* it's an external lun */
4085 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
4086 * logdev. The number of luns in physdev and logdev are returned in
4087 * *nphysicals and *nlogicals, respectively.
4088 * Returns 0 on success, -1 otherwise.
4090 static int hpsa_gather_lun_info(struct ctlr_info *h,
4091 struct ReportExtendedLUNdata *physdev, u32 *nphysicals,
4092 struct ReportLUNdata *logdev, u32 *nlogicals)
4094 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
4095 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
4098 *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 24;
4099 if (*nphysicals > HPSA_MAX_PHYS_LUN) {
4100 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded. %d LUNs ignored.\n",
4101 HPSA_MAX_PHYS_LUN, *nphysicals - HPSA_MAX_PHYS_LUN);
4102 *nphysicals = HPSA_MAX_PHYS_LUN;
4104 if (hpsa_scsi_do_report_log_luns(h, logdev, sizeof(*logdev))) {
4105 dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
4108 *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8;
4109 /* Reject Logicals in excess of our max capability. */
4110 if (*nlogicals > HPSA_MAX_LUN) {
4111 dev_warn(&h->pdev->dev,
4112 "maximum logical LUNs (%d) exceeded. "
4113 "%d LUNs ignored.\n", HPSA_MAX_LUN,
4114 *nlogicals - HPSA_MAX_LUN);
4115 *nlogicals = HPSA_MAX_LUN;
4117 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) {
4118 dev_warn(&h->pdev->dev,
4119 "maximum logical + physical LUNs (%d) exceeded. "
4120 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
4121 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN);
4122 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals;
4127 static u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position,
4128 int i, int nphysicals, int nlogicals,
4129 struct ReportExtendedLUNdata *physdev_list,
4130 struct ReportLUNdata *logdev_list)
4132 /* Helper function, figure out where the LUN ID info is coming from
4133 * given index i, lists of physical and logical devices, where in
4134 * the list the raid controller is supposed to appear (first or last)
4137 int logicals_start = nphysicals + (raid_ctlr_position == 0);
4138 int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0);
4140 if (i == raid_ctlr_position)
4141 return RAID_CTLR_LUNID;
4143 if (i < logicals_start)
4144 return &physdev_list->LUN[i -
4145 (raid_ctlr_position == 0)].lunid[0];
4147 if (i < last_device)
4148 return &logdev_list->LUN[i - nphysicals -
4149 (raid_ctlr_position == 0)][0];
4154 /* get physical drive ioaccel handle and queue depth */
4155 static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h,
4156 struct hpsa_scsi_dev_t *dev,
4157 struct ReportExtendedLUNdata *rlep, int rle_index,
4158 struct bmic_identify_physical_device *id_phys)
4161 struct ext_report_lun_entry *rle;
4163 rle = &rlep->LUN[rle_index];
4165 dev->ioaccel_handle = rle->ioaccel_handle;
4166 if ((rle->device_flags & 0x08) && dev->ioaccel_handle)
4167 dev->hba_ioaccel_enabled = 1;
4168 memset(id_phys, 0, sizeof(*id_phys));
4169 rc = hpsa_bmic_id_physical_device(h, &rle->lunid[0],
4170 GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]), id_phys,
4173 /* Reserve space for FW operations */
4174 #define DRIVE_CMDS_RESERVED_FOR_FW 2
4175 #define DRIVE_QUEUE_DEPTH 7
4177 le16_to_cpu(id_phys->current_queue_depth_limit) -
4178 DRIVE_CMDS_RESERVED_FOR_FW;
4180 dev->queue_depth = DRIVE_QUEUE_DEPTH; /* conservative */
4183 static void hpsa_get_path_info(struct hpsa_scsi_dev_t *this_device,
4184 struct ReportExtendedLUNdata *rlep, int rle_index,
4185 struct bmic_identify_physical_device *id_phys)
4187 struct ext_report_lun_entry *rle = &rlep->LUN[rle_index];
4189 if ((rle->device_flags & 0x08) && this_device->ioaccel_handle)
4190 this_device->hba_ioaccel_enabled = 1;
4192 memcpy(&this_device->active_path_index,
4193 &id_phys->active_path_number,
4194 sizeof(this_device->active_path_index));
4195 memcpy(&this_device->path_map,
4196 &id_phys->redundant_path_present_map,
4197 sizeof(this_device->path_map));
4198 memcpy(&this_device->box,
4199 &id_phys->alternate_paths_phys_box_on_port,
4200 sizeof(this_device->box));
4201 memcpy(&this_device->phys_connector,
4202 &id_phys->alternate_paths_phys_connector,
4203 sizeof(this_device->phys_connector));
4204 memcpy(&this_device->bay,
4205 &id_phys->phys_bay_in_box,
4206 sizeof(this_device->bay));
4209 /* get number of local logical disks. */
4210 static int hpsa_set_local_logical_count(struct ctlr_info *h,
4211 struct bmic_identify_controller *id_ctlr,
4217 dev_warn(&h->pdev->dev, "%s: id_ctlr buffer is NULL.\n",
4221 memset(id_ctlr, 0, sizeof(*id_ctlr));
4222 rc = hpsa_bmic_id_controller(h, id_ctlr, sizeof(*id_ctlr));
4224 if (id_ctlr->configured_logical_drive_count < 255)
4225 *nlocals = id_ctlr->configured_logical_drive_count;
4227 *nlocals = le16_to_cpu(
4228 id_ctlr->extended_logical_unit_count);
4234 static bool hpsa_is_disk_spare(struct ctlr_info *h, u8 *lunaddrbytes)
4236 struct bmic_identify_physical_device *id_phys;
4237 bool is_spare = false;
4240 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
4244 rc = hpsa_bmic_id_physical_device(h,
4246 GET_BMIC_DRIVE_NUMBER(lunaddrbytes),
4247 id_phys, sizeof(*id_phys));
4249 is_spare = (id_phys->more_flags >> 6) & 0x01;
4255 #define RPL_DEV_FLAG_NON_DISK 0x1
4256 #define RPL_DEV_FLAG_UNCONFIG_DISK_REPORTING_SUPPORTED 0x2
4257 #define RPL_DEV_FLAG_UNCONFIG_DISK 0x4
4259 #define BMIC_DEVICE_TYPE_ENCLOSURE 6
4261 static bool hpsa_skip_device(struct ctlr_info *h, u8 *lunaddrbytes,
4262 struct ext_report_lun_entry *rle)
4267 if (!MASKED_DEVICE(lunaddrbytes))
4270 device_flags = rle->device_flags;
4271 device_type = rle->device_type;
4273 if (device_flags & RPL_DEV_FLAG_NON_DISK) {
4274 if (device_type == BMIC_DEVICE_TYPE_ENCLOSURE)
4279 if (!(device_flags & RPL_DEV_FLAG_UNCONFIG_DISK_REPORTING_SUPPORTED))
4282 if (device_flags & RPL_DEV_FLAG_UNCONFIG_DISK)
4286 * Spares may be spun down, we do not want to
4287 * do an Inquiry to a RAID set spare drive as
4288 * that would have them spun up, that is a
4289 * performance hit because I/O to the RAID device
4290 * stops while the spin up occurs which can take
4293 if (hpsa_is_disk_spare(h, lunaddrbytes))
4299 static void hpsa_update_scsi_devices(struct ctlr_info *h)
4301 /* the idea here is we could get notified
4302 * that some devices have changed, so we do a report
4303 * physical luns and report logical luns cmd, and adjust
4304 * our list of devices accordingly.
4306 * The scsi3addr's of devices won't change so long as the
4307 * adapter is not reset. That means we can rescan and
4308 * tell which devices we already know about, vs. new
4309 * devices, vs. disappearing devices.
4311 struct ReportExtendedLUNdata *physdev_list = NULL;
4312 struct ReportLUNdata *logdev_list = NULL;
4313 struct bmic_identify_physical_device *id_phys = NULL;
4314 struct bmic_identify_controller *id_ctlr = NULL;
4317 u32 nlocal_logicals = 0;
4318 u32 ndev_allocated = 0;
4319 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
4321 int i, n_ext_target_devs, ndevs_to_allocate;
4322 int raid_ctlr_position;
4323 bool physical_device;
4324 DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS);
4326 currentsd = kcalloc(HPSA_MAX_DEVICES, sizeof(*currentsd), GFP_KERNEL);
4327 physdev_list = kzalloc(sizeof(*physdev_list), GFP_KERNEL);
4328 logdev_list = kzalloc(sizeof(*logdev_list), GFP_KERNEL);
4329 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL);
4330 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
4331 id_ctlr = kzalloc(sizeof(*id_ctlr), GFP_KERNEL);
4333 if (!currentsd || !physdev_list || !logdev_list ||
4334 !tmpdevice || !id_phys || !id_ctlr) {
4335 dev_err(&h->pdev->dev, "out of memory\n");
4338 memset(lunzerobits, 0, sizeof(lunzerobits));
4340 h->drv_req_rescan = 0; /* cancel scheduled rescan - we're doing it. */
4342 if (hpsa_gather_lun_info(h, physdev_list, &nphysicals,
4343 logdev_list, &nlogicals)) {
4344 h->drv_req_rescan = 1;
4348 /* Set number of local logicals (non PTRAID) */
4349 if (hpsa_set_local_logical_count(h, id_ctlr, &nlocal_logicals)) {
4350 dev_warn(&h->pdev->dev,
4351 "%s: Can't determine number of local logical devices.\n",
4355 /* We might see up to the maximum number of logical and physical disks
4356 * plus external target devices, and a device for the local RAID
4359 ndevs_to_allocate = nphysicals + nlogicals + MAX_EXT_TARGETS + 1;
4361 hpsa_ext_ctrl_present(h, physdev_list);
4363 /* Allocate the per device structures */
4364 for (i = 0; i < ndevs_to_allocate; i++) {
4365 if (i >= HPSA_MAX_DEVICES) {
4366 dev_warn(&h->pdev->dev, "maximum devices (%d) exceeded."
4367 " %d devices ignored.\n", HPSA_MAX_DEVICES,
4368 ndevs_to_allocate - HPSA_MAX_DEVICES);
4372 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL);
4373 if (!currentsd[i]) {
4374 h->drv_req_rescan = 1;
4380 if (is_scsi_rev_5(h))
4381 raid_ctlr_position = 0;
4383 raid_ctlr_position = nphysicals + nlogicals;
4385 /* adjust our table of devices */
4386 n_ext_target_devs = 0;
4387 for (i = 0; i < nphysicals + nlogicals + 1; i++) {
4388 u8 *lunaddrbytes, is_OBDR = 0;
4390 int phys_dev_index = i - (raid_ctlr_position == 0);
4391 bool skip_device = false;
4393 memset(tmpdevice, 0, sizeof(*tmpdevice));
4395 physical_device = i < nphysicals + (raid_ctlr_position == 0);
4397 /* Figure out where the LUN ID info is coming from */
4398 lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position,
4399 i, nphysicals, nlogicals, physdev_list, logdev_list);
4401 /* Determine if this is a lun from an external target array */
4402 tmpdevice->external =
4403 figure_external_status(h, raid_ctlr_position, i,
4404 nphysicals, nlocal_logicals);
4407 * Skip over some devices such as a spare.
4409 if (!tmpdevice->external && physical_device) {
4410 skip_device = hpsa_skip_device(h, lunaddrbytes,
4411 &physdev_list->LUN[phys_dev_index]);
4416 /* Get device type, vendor, model, device id, raid_map */
4417 rc = hpsa_update_device_info(h, lunaddrbytes, tmpdevice,
4419 if (rc == -ENOMEM) {
4420 dev_warn(&h->pdev->dev,
4421 "Out of memory, rescan deferred.\n");
4422 h->drv_req_rescan = 1;
4426 h->drv_req_rescan = 1;
4430 figure_bus_target_lun(h, lunaddrbytes, tmpdevice);
4431 this_device = currentsd[ncurrent];
4433 *this_device = *tmpdevice;
4434 this_device->physical_device = physical_device;
4437 * Expose all devices except for physical devices that
4440 if (MASKED_DEVICE(lunaddrbytes) && this_device->physical_device)
4441 this_device->expose_device = 0;
4443 this_device->expose_device = 1;
4447 * Get the SAS address for physical devices that are exposed.
4449 if (this_device->physical_device && this_device->expose_device)
4450 hpsa_get_sas_address(h, lunaddrbytes, this_device);
4452 switch (this_device->devtype) {
4454 /* We don't *really* support actual CD-ROM devices,
4455 * just "One Button Disaster Recovery" tape drive
4456 * which temporarily pretends to be a CD-ROM drive.
4457 * So we check that the device is really an OBDR tape
4458 * device by checking for "$DR-10" in bytes 43-48 of
4466 if (this_device->physical_device) {
4467 /* The disk is in HBA mode. */
4468 /* Never use RAID mapper in HBA mode. */
4469 this_device->offload_enabled = 0;
4470 hpsa_get_ioaccel_drive_info(h, this_device,
4471 physdev_list, phys_dev_index, id_phys);
4472 hpsa_get_path_info(this_device,
4473 physdev_list, phys_dev_index, id_phys);
4478 case TYPE_MEDIUM_CHANGER:
4481 case TYPE_ENCLOSURE:
4482 if (!this_device->external)
4483 hpsa_get_enclosure_info(h, lunaddrbytes,
4484 physdev_list, phys_dev_index,
4489 /* Only present the Smartarray HBA as a RAID controller.
4490 * If it's a RAID controller other than the HBA itself
4491 * (an external RAID controller, MSA500 or similar)
4494 if (!is_hba_lunid(lunaddrbytes))
4501 if (ncurrent >= HPSA_MAX_DEVICES)
4505 if (h->sas_host == NULL) {
4508 rc = hpsa_add_sas_host(h);
4510 dev_warn(&h->pdev->dev,
4511 "Could not add sas host %d\n", rc);
4516 adjust_hpsa_scsi_table(h, currentsd, ncurrent);
4519 for (i = 0; i < ndev_allocated; i++)
4520 kfree(currentsd[i]);
4522 kfree(physdev_list);
4528 static void hpsa_set_sg_descriptor(struct SGDescriptor *desc,
4529 struct scatterlist *sg)
4531 u64 addr64 = (u64) sg_dma_address(sg);
4532 unsigned int len = sg_dma_len(sg);
4534 desc->Addr = cpu_to_le64(addr64);
4535 desc->Len = cpu_to_le32(len);
4540 * hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
4541 * dma mapping and fills in the scatter gather entries of the
4544 static int hpsa_scatter_gather(struct ctlr_info *h,
4545 struct CommandList *cp,
4546 struct scsi_cmnd *cmd)
4548 struct scatterlist *sg;
4549 int use_sg, i, sg_limit, chained, last_sg;
4550 struct SGDescriptor *curr_sg;
4552 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
4554 use_sg = scsi_dma_map(cmd);
4559 goto sglist_finished;
4562 * If the number of entries is greater than the max for a single list,
4563 * then we have a chained list; we will set up all but one entry in the
4564 * first list (the last entry is saved for link information);
4565 * otherwise, we don't have a chained list and we'll set up at each of
4566 * the entries in the one list.
4569 chained = use_sg > h->max_cmd_sg_entries;
4570 sg_limit = chained ? h->max_cmd_sg_entries - 1 : use_sg;
4571 last_sg = scsi_sg_count(cmd) - 1;
4572 scsi_for_each_sg(cmd, sg, sg_limit, i) {
4573 hpsa_set_sg_descriptor(curr_sg, sg);
4579 * Continue with the chained list. Set curr_sg to the chained
4580 * list. Modify the limit to the total count less the entries
4581 * we've already set up. Resume the scan at the list entry
4582 * where the previous loop left off.
4584 curr_sg = h->cmd_sg_list[cp->cmdindex];
4585 sg_limit = use_sg - sg_limit;
4586 for_each_sg(sg, sg, sg_limit, i) {
4587 hpsa_set_sg_descriptor(curr_sg, sg);
4592 /* Back the pointer up to the last entry and mark it as "last". */
4593 (curr_sg - 1)->Ext = cpu_to_le32(HPSA_SG_LAST);
4595 if (use_sg + chained > h->maxSG)
4596 h->maxSG = use_sg + chained;
4599 cp->Header.SGList = h->max_cmd_sg_entries;
4600 cp->Header.SGTotal = cpu_to_le16(use_sg + 1);
4601 if (hpsa_map_sg_chain_block(h, cp)) {
4602 scsi_dma_unmap(cmd);
4610 cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */
4611 cp->Header.SGTotal = cpu_to_le16(use_sg); /* total sgs in cmd list */
4615 static inline void warn_zero_length_transfer(struct ctlr_info *h,
4616 u8 *cdb, int cdb_len,
4619 dev_warn(&h->pdev->dev,
4620 "%s: Blocking zero-length request: CDB:%*phN\n",
4621 func, cdb_len, cdb);
4624 #define IO_ACCEL_INELIGIBLE 1
4625 /* zero-length transfers trigger hardware errors. */
4626 static bool is_zero_length_transfer(u8 *cdb)
4630 /* Block zero-length transfer sizes on certain commands. */
4634 case VERIFY: /* 0x2F */
4635 case WRITE_VERIFY: /* 0x2E */
4636 block_cnt = get_unaligned_be16(&cdb[7]);
4640 case VERIFY_12: /* 0xAF */
4641 case WRITE_VERIFY_12: /* 0xAE */
4642 block_cnt = get_unaligned_be32(&cdb[6]);
4646 case VERIFY_16: /* 0x8F */
4647 block_cnt = get_unaligned_be32(&cdb[10]);
4653 return block_cnt == 0;
4656 static int fixup_ioaccel_cdb(u8 *cdb, int *cdb_len)
4662 /* Perform some CDB fixups if needed using 10 byte reads/writes only */
4670 if (*cdb_len == 6) {
4671 block = (((cdb[1] & 0x1F) << 16) |
4678 BUG_ON(*cdb_len != 12);
4679 block = get_unaligned_be32(&cdb[2]);
4680 block_cnt = get_unaligned_be32(&cdb[6]);
4682 if (block_cnt > 0xffff)
4683 return IO_ACCEL_INELIGIBLE;
4685 cdb[0] = is_write ? WRITE_10 : READ_10;
4687 cdb[2] = (u8) (block >> 24);
4688 cdb[3] = (u8) (block >> 16);
4689 cdb[4] = (u8) (block >> 8);
4690 cdb[5] = (u8) (block);
4692 cdb[7] = (u8) (block_cnt >> 8);
4693 cdb[8] = (u8) (block_cnt);
4701 static int hpsa_scsi_ioaccel1_queue_command(struct ctlr_info *h,
4702 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4703 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4705 struct scsi_cmnd *cmd = c->scsi_cmd;
4706 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
4708 unsigned int total_len = 0;
4709 struct scatterlist *sg;
4712 struct SGDescriptor *curr_sg;
4713 u32 control = IOACCEL1_CONTROL_SIMPLEQUEUE;
4715 /* TODO: implement chaining support */
4716 if (scsi_sg_count(cmd) > h->ioaccel_maxsg) {
4717 atomic_dec(&phys_disk->ioaccel_cmds_out);
4718 return IO_ACCEL_INELIGIBLE;
4721 BUG_ON(cmd->cmd_len > IOACCEL1_IOFLAGS_CDBLEN_MAX);
4723 if (is_zero_length_transfer(cdb)) {
4724 warn_zero_length_transfer(h, cdb, cdb_len, __func__);
4725 atomic_dec(&phys_disk->ioaccel_cmds_out);
4726 return IO_ACCEL_INELIGIBLE;
4729 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4730 atomic_dec(&phys_disk->ioaccel_cmds_out);
4731 return IO_ACCEL_INELIGIBLE;
4734 c->cmd_type = CMD_IOACCEL1;
4736 /* Adjust the DMA address to point to the accelerated command buffer */
4737 c->busaddr = (u32) h->ioaccel_cmd_pool_dhandle +
4738 (c->cmdindex * sizeof(*cp));
4739 BUG_ON(c->busaddr & 0x0000007F);
4741 use_sg = scsi_dma_map(cmd);
4743 atomic_dec(&phys_disk->ioaccel_cmds_out);
4749 scsi_for_each_sg(cmd, sg, use_sg, i) {
4750 addr64 = (u64) sg_dma_address(sg);
4751 len = sg_dma_len(sg);
4753 curr_sg->Addr = cpu_to_le64(addr64);
4754 curr_sg->Len = cpu_to_le32(len);
4755 curr_sg->Ext = cpu_to_le32(0);
4758 (--curr_sg)->Ext = cpu_to_le32(HPSA_SG_LAST);
4760 switch (cmd->sc_data_direction) {
4762 control |= IOACCEL1_CONTROL_DATA_OUT;
4764 case DMA_FROM_DEVICE:
4765 control |= IOACCEL1_CONTROL_DATA_IN;
4768 control |= IOACCEL1_CONTROL_NODATAXFER;
4771 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4772 cmd->sc_data_direction);
4777 control |= IOACCEL1_CONTROL_NODATAXFER;
4780 c->Header.SGList = use_sg;
4781 /* Fill out the command structure to submit */
4782 cp->dev_handle = cpu_to_le16(ioaccel_handle & 0xFFFF);
4783 cp->transfer_len = cpu_to_le32(total_len);
4784 cp->io_flags = cpu_to_le16(IOACCEL1_IOFLAGS_IO_REQ |
4785 (cdb_len & IOACCEL1_IOFLAGS_CDBLEN_MASK));
4786 cp->control = cpu_to_le32(control);
4787 memcpy(cp->CDB, cdb, cdb_len);
4788 memcpy(cp->CISS_LUN, scsi3addr, 8);
4789 /* Tag was already set at init time. */
4790 enqueue_cmd_and_start_io(h, c);
4795 * Queue a command directly to a device behind the controller using the
4796 * I/O accelerator path.
4798 static int hpsa_scsi_ioaccel_direct_map(struct ctlr_info *h,
4799 struct CommandList *c)
4801 struct scsi_cmnd *cmd = c->scsi_cmd;
4802 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4812 return hpsa_scsi_ioaccel_queue_command(h, c, dev->ioaccel_handle,
4813 cmd->cmnd, cmd->cmd_len, dev->scsi3addr, dev);
4817 * Set encryption parameters for the ioaccel2 request
4819 static void set_encrypt_ioaccel2(struct ctlr_info *h,
4820 struct CommandList *c, struct io_accel2_cmd *cp)
4822 struct scsi_cmnd *cmd = c->scsi_cmd;
4823 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4824 struct raid_map_data *map = &dev->raid_map;
4827 /* Are we doing encryption on this device */
4828 if (!(le16_to_cpu(map->flags) & RAID_MAP_FLAG_ENCRYPT_ON))
4830 /* Set the data encryption key index. */
4831 cp->dekindex = map->dekindex;
4833 /* Set the encryption enable flag, encoded into direction field. */
4834 cp->direction |= IOACCEL2_DIRECTION_ENCRYPT_MASK;
4836 /* Set encryption tweak values based on logical block address
4837 * If block size is 512, tweak value is LBA.
4838 * For other block sizes, tweak is (LBA * block size)/ 512)
4840 switch (cmd->cmnd[0]) {
4841 /* Required? 6-byte cdbs eliminated by fixup_ioaccel_cdb */
4844 first_block = (((cmd->cmnd[1] & 0x1F) << 16) |
4845 (cmd->cmnd[2] << 8) |
4850 /* Required? 12-byte cdbs eliminated by fixup_ioaccel_cdb */
4853 first_block = get_unaligned_be32(&cmd->cmnd[2]);
4857 first_block = get_unaligned_be64(&cmd->cmnd[2]);
4860 dev_err(&h->pdev->dev,
4861 "ERROR: %s: size (0x%x) not supported for encryption\n",
4862 __func__, cmd->cmnd[0]);
4867 if (le32_to_cpu(map->volume_blk_size) != 512)
4868 first_block = first_block *
4869 le32_to_cpu(map->volume_blk_size)/512;
4871 cp->tweak_lower = cpu_to_le32(first_block);
4872 cp->tweak_upper = cpu_to_le32(first_block >> 32);
4875 static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h,
4876 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4877 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4879 struct scsi_cmnd *cmd = c->scsi_cmd;
4880 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
4881 struct ioaccel2_sg_element *curr_sg;
4883 struct scatterlist *sg;
4891 if (!cmd->device->hostdata)
4894 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
4896 if (is_zero_length_transfer(cdb)) {
4897 warn_zero_length_transfer(h, cdb, cdb_len, __func__);
4898 atomic_dec(&phys_disk->ioaccel_cmds_out);
4899 return IO_ACCEL_INELIGIBLE;
4902 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4903 atomic_dec(&phys_disk->ioaccel_cmds_out);
4904 return IO_ACCEL_INELIGIBLE;
4907 c->cmd_type = CMD_IOACCEL2;
4908 /* Adjust the DMA address to point to the accelerated command buffer */
4909 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
4910 (c->cmdindex * sizeof(*cp));
4911 BUG_ON(c->busaddr & 0x0000007F);
4913 memset(cp, 0, sizeof(*cp));
4914 cp->IU_type = IOACCEL2_IU_TYPE;
4916 use_sg = scsi_dma_map(cmd);
4918 atomic_dec(&phys_disk->ioaccel_cmds_out);
4924 if (use_sg > h->ioaccel_maxsg) {
4925 addr64 = le64_to_cpu(
4926 h->ioaccel2_cmd_sg_list[c->cmdindex]->address);
4927 curr_sg->address = cpu_to_le64(addr64);
4928 curr_sg->length = 0;
4929 curr_sg->reserved[0] = 0;
4930 curr_sg->reserved[1] = 0;
4931 curr_sg->reserved[2] = 0;
4932 curr_sg->chain_indicator = IOACCEL2_CHAIN;
4934 curr_sg = h->ioaccel2_cmd_sg_list[c->cmdindex];
4936 scsi_for_each_sg(cmd, sg, use_sg, i) {
4937 addr64 = (u64) sg_dma_address(sg);
4938 len = sg_dma_len(sg);
4940 curr_sg->address = cpu_to_le64(addr64);
4941 curr_sg->length = cpu_to_le32(len);
4942 curr_sg->reserved[0] = 0;
4943 curr_sg->reserved[1] = 0;
4944 curr_sg->reserved[2] = 0;
4945 curr_sg->chain_indicator = 0;
4950 * Set the last s/g element bit
4952 (curr_sg - 1)->chain_indicator = IOACCEL2_LAST_SG;
4954 switch (cmd->sc_data_direction) {
4956 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4957 cp->direction |= IOACCEL2_DIR_DATA_OUT;
4959 case DMA_FROM_DEVICE:
4960 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4961 cp->direction |= IOACCEL2_DIR_DATA_IN;
4964 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4965 cp->direction |= IOACCEL2_DIR_NO_DATA;
4968 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4969 cmd->sc_data_direction);
4974 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4975 cp->direction |= IOACCEL2_DIR_NO_DATA;
4978 /* Set encryption parameters, if necessary */
4979 set_encrypt_ioaccel2(h, c, cp);
4981 cp->scsi_nexus = cpu_to_le32(ioaccel_handle);
4982 cp->Tag = cpu_to_le32(c->cmdindex << DIRECT_LOOKUP_SHIFT);
4983 memcpy(cp->cdb, cdb, sizeof(cp->cdb));
4985 cp->data_len = cpu_to_le32(total_len);
4986 cp->err_ptr = cpu_to_le64(c->busaddr +
4987 offsetof(struct io_accel2_cmd, error_data));
4988 cp->err_len = cpu_to_le32(sizeof(cp->error_data));
4990 /* fill in sg elements */
4991 if (use_sg > h->ioaccel_maxsg) {
4993 cp->sg[0].length = cpu_to_le32(use_sg * sizeof(cp->sg[0]));
4994 if (hpsa_map_ioaccel2_sg_chain_block(h, cp, c)) {
4995 atomic_dec(&phys_disk->ioaccel_cmds_out);
4996 scsi_dma_unmap(cmd);
5000 cp->sg_count = (u8) use_sg;
5002 if (phys_disk->in_reset) {
5003 cmd->result = DID_RESET << 16;
5007 enqueue_cmd_and_start_io(h, c);
5012 * Queue a command to the correct I/O accelerator path.
5014 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
5015 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
5016 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
5018 if (!c->scsi_cmd->device)
5021 if (!c->scsi_cmd->device->hostdata)
5024 if (phys_disk->in_reset)
5027 /* Try to honor the device's queue depth */
5028 if (atomic_inc_return(&phys_disk->ioaccel_cmds_out) >
5029 phys_disk->queue_depth) {
5030 atomic_dec(&phys_disk->ioaccel_cmds_out);
5031 return IO_ACCEL_INELIGIBLE;
5033 if (h->transMethod & CFGTBL_Trans_io_accel1)
5034 return hpsa_scsi_ioaccel1_queue_command(h, c, ioaccel_handle,
5035 cdb, cdb_len, scsi3addr,
5038 return hpsa_scsi_ioaccel2_queue_command(h, c, ioaccel_handle,
5039 cdb, cdb_len, scsi3addr,
5043 static void raid_map_helper(struct raid_map_data *map,
5044 int offload_to_mirror, u32 *map_index, u32 *current_group)
5046 if (offload_to_mirror == 0) {
5047 /* use physical disk in the first mirrored group. */
5048 *map_index %= le16_to_cpu(map->data_disks_per_row);
5052 /* determine mirror group that *map_index indicates */
5053 *current_group = *map_index /
5054 le16_to_cpu(map->data_disks_per_row);
5055 if (offload_to_mirror == *current_group)
5057 if (*current_group < le16_to_cpu(map->layout_map_count) - 1) {
5058 /* select map index from next group */
5059 *map_index += le16_to_cpu(map->data_disks_per_row);
5062 /* select map index from first group */
5063 *map_index %= le16_to_cpu(map->data_disks_per_row);
5066 } while (offload_to_mirror != *current_group);
5070 * Attempt to perform offload RAID mapping for a logical volume I/O.
5072 static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h,
5073 struct CommandList *c)
5075 struct scsi_cmnd *cmd = c->scsi_cmd;
5076 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
5077 struct raid_map_data *map = &dev->raid_map;
5078 struct raid_map_disk_data *dd = &map->data[0];
5081 u64 first_block, last_block;
5084 u64 first_row, last_row;
5085 u32 first_row_offset, last_row_offset;
5086 u32 first_column, last_column;
5087 u64 r0_first_row, r0_last_row;
5088 u32 r5or6_blocks_per_row;
5089 u64 r5or6_first_row, r5or6_last_row;
5090 u32 r5or6_first_row_offset, r5or6_last_row_offset;
5091 u32 r5or6_first_column, r5or6_last_column;
5092 u32 total_disks_per_row;
5094 u32 first_group, last_group, current_group;
5102 #if BITS_PER_LONG == 32
5105 int offload_to_mirror;
5113 /* check for valid opcode, get LBA and block count */
5114 switch (cmd->cmnd[0]) {
5119 first_block = (((cmd->cmnd[1] & 0x1F) << 16) |
5120 (cmd->cmnd[2] << 8) |
5122 block_cnt = cmd->cmnd[4];
5131 (((u64) cmd->cmnd[2]) << 24) |
5132 (((u64) cmd->cmnd[3]) << 16) |
5133 (((u64) cmd->cmnd[4]) << 8) |
5136 (((u32) cmd->cmnd[7]) << 8) |
5144 (((u64) cmd->cmnd[2]) << 24) |
5145 (((u64) cmd->cmnd[3]) << 16) |
5146 (((u64) cmd->cmnd[4]) << 8) |
5149 (((u32) cmd->cmnd[6]) << 24) |
5150 (((u32) cmd->cmnd[7]) << 16) |
5151 (((u32) cmd->cmnd[8]) << 8) |
5159 (((u64) cmd->cmnd[2]) << 56) |
5160 (((u64) cmd->cmnd[3]) << 48) |
5161 (((u64) cmd->cmnd[4]) << 40) |
5162 (((u64) cmd->cmnd[5]) << 32) |
5163 (((u64) cmd->cmnd[6]) << 24) |
5164 (((u64) cmd->cmnd[7]) << 16) |
5165 (((u64) cmd->cmnd[8]) << 8) |
5168 (((u32) cmd->cmnd[10]) << 24) |
5169 (((u32) cmd->cmnd[11]) << 16) |
5170 (((u32) cmd->cmnd[12]) << 8) |
5174 return IO_ACCEL_INELIGIBLE; /* process via normal I/O path */
5176 last_block = first_block + block_cnt - 1;
5178 /* check for write to non-RAID-0 */
5179 if (is_write && dev->raid_level != 0)
5180 return IO_ACCEL_INELIGIBLE;
5182 /* check for invalid block or wraparound */
5183 if (last_block >= le64_to_cpu(map->volume_blk_cnt) ||
5184 last_block < first_block)
5185 return IO_ACCEL_INELIGIBLE;
5187 /* calculate stripe information for the request */
5188 blocks_per_row = le16_to_cpu(map->data_disks_per_row) *
5189 le16_to_cpu(map->strip_size);
5190 strip_size = le16_to_cpu(map->strip_size);
5191 #if BITS_PER_LONG == 32
5192 tmpdiv = first_block;
5193 (void) do_div(tmpdiv, blocks_per_row);
5195 tmpdiv = last_block;
5196 (void) do_div(tmpdiv, blocks_per_row);
5198 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
5199 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
5200 tmpdiv = first_row_offset;
5201 (void) do_div(tmpdiv, strip_size);
5202 first_column = tmpdiv;
5203 tmpdiv = last_row_offset;
5204 (void) do_div(tmpdiv, strip_size);
5205 last_column = tmpdiv;
5207 first_row = first_block / blocks_per_row;
5208 last_row = last_block / blocks_per_row;
5209 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
5210 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
5211 first_column = first_row_offset / strip_size;
5212 last_column = last_row_offset / strip_size;
5215 /* if this isn't a single row/column then give to the controller */
5216 if ((first_row != last_row) || (first_column != last_column))
5217 return IO_ACCEL_INELIGIBLE;
5219 /* proceeding with driver mapping */
5220 total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
5221 le16_to_cpu(map->metadata_disks_per_row);
5222 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
5223 le16_to_cpu(map->row_cnt);
5224 map_index = (map_row * total_disks_per_row) + first_column;
5226 switch (dev->raid_level) {
5228 break; /* nothing special to do */
5230 /* Handles load balance across RAID 1 members.
5231 * (2-drive R1 and R10 with even # of drives.)
5232 * Appropriate for SSDs, not optimal for HDDs
5234 BUG_ON(le16_to_cpu(map->layout_map_count) != 2);
5235 if (dev->offload_to_mirror)
5236 map_index += le16_to_cpu(map->data_disks_per_row);
5237 dev->offload_to_mirror = !dev->offload_to_mirror;
5240 /* Handles N-way mirrors (R1-ADM)
5241 * and R10 with # of drives divisible by 3.)
5243 BUG_ON(le16_to_cpu(map->layout_map_count) != 3);
5245 offload_to_mirror = dev->offload_to_mirror;
5246 raid_map_helper(map, offload_to_mirror,
5247 &map_index, ¤t_group);
5248 /* set mirror group to use next time */
5250 (offload_to_mirror >=
5251 le16_to_cpu(map->layout_map_count) - 1)
5252 ? 0 : offload_to_mirror + 1;
5253 dev->offload_to_mirror = offload_to_mirror;
5254 /* Avoid direct use of dev->offload_to_mirror within this
5255 * function since multiple threads might simultaneously
5256 * increment it beyond the range of dev->layout_map_count -1.
5261 if (le16_to_cpu(map->layout_map_count) <= 1)
5264 /* Verify first and last block are in same RAID group */
5265 r5or6_blocks_per_row =
5266 le16_to_cpu(map->strip_size) *
5267 le16_to_cpu(map->data_disks_per_row);
5268 BUG_ON(r5or6_blocks_per_row == 0);
5269 stripesize = r5or6_blocks_per_row *
5270 le16_to_cpu(map->layout_map_count);
5271 #if BITS_PER_LONG == 32
5272 tmpdiv = first_block;
5273 first_group = do_div(tmpdiv, stripesize);
5274 tmpdiv = first_group;
5275 (void) do_div(tmpdiv, r5or6_blocks_per_row);
5276 first_group = tmpdiv;
5277 tmpdiv = last_block;
5278 last_group = do_div(tmpdiv, stripesize);
5279 tmpdiv = last_group;
5280 (void) do_div(tmpdiv, r5or6_blocks_per_row);
5281 last_group = tmpdiv;
5283 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
5284 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
5286 if (first_group != last_group)
5287 return IO_ACCEL_INELIGIBLE;
5289 /* Verify request is in a single row of RAID 5/6 */
5290 #if BITS_PER_LONG == 32
5291 tmpdiv = first_block;
5292 (void) do_div(tmpdiv, stripesize);
5293 first_row = r5or6_first_row = r0_first_row = tmpdiv;
5294 tmpdiv = last_block;
5295 (void) do_div(tmpdiv, stripesize);
5296 r5or6_last_row = r0_last_row = tmpdiv;
5298 first_row = r5or6_first_row = r0_first_row =
5299 first_block / stripesize;
5300 r5or6_last_row = r0_last_row = last_block / stripesize;
5302 if (r5or6_first_row != r5or6_last_row)
5303 return IO_ACCEL_INELIGIBLE;
5306 /* Verify request is in a single column */
5307 #if BITS_PER_LONG == 32
5308 tmpdiv = first_block;
5309 first_row_offset = do_div(tmpdiv, stripesize);
5310 tmpdiv = first_row_offset;
5311 first_row_offset = (u32) do_div(tmpdiv, r5or6_blocks_per_row);
5312 r5or6_first_row_offset = first_row_offset;
5313 tmpdiv = last_block;
5314 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
5315 tmpdiv = r5or6_last_row_offset;
5316 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
5317 tmpdiv = r5or6_first_row_offset;
5318 (void) do_div(tmpdiv, map->strip_size);
5319 first_column = r5or6_first_column = tmpdiv;
5320 tmpdiv = r5or6_last_row_offset;
5321 (void) do_div(tmpdiv, map->strip_size);
5322 r5or6_last_column = tmpdiv;
5324 first_row_offset = r5or6_first_row_offset =
5325 (u32)((first_block % stripesize) %
5326 r5or6_blocks_per_row);
5328 r5or6_last_row_offset =
5329 (u32)((last_block % stripesize) %
5330 r5or6_blocks_per_row);
5332 first_column = r5or6_first_column =
5333 r5or6_first_row_offset / le16_to_cpu(map->strip_size);
5335 r5or6_last_row_offset / le16_to_cpu(map->strip_size);
5337 if (r5or6_first_column != r5or6_last_column)
5338 return IO_ACCEL_INELIGIBLE;
5340 /* Request is eligible */
5341 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
5342 le16_to_cpu(map->row_cnt);
5344 map_index = (first_group *
5345 (le16_to_cpu(map->row_cnt) * total_disks_per_row)) +
5346 (map_row * total_disks_per_row) + first_column;
5349 return IO_ACCEL_INELIGIBLE;
5352 if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES))
5353 return IO_ACCEL_INELIGIBLE;
5355 c->phys_disk = dev->phys_disk[map_index];
5357 return IO_ACCEL_INELIGIBLE;
5359 disk_handle = dd[map_index].ioaccel_handle;
5360 disk_block = le64_to_cpu(map->disk_starting_blk) +
5361 first_row * le16_to_cpu(map->strip_size) +
5362 (first_row_offset - first_column *
5363 le16_to_cpu(map->strip_size));
5364 disk_block_cnt = block_cnt;
5366 /* handle differing logical/physical block sizes */
5367 if (map->phys_blk_shift) {
5368 disk_block <<= map->phys_blk_shift;
5369 disk_block_cnt <<= map->phys_blk_shift;
5371 BUG_ON(disk_block_cnt > 0xffff);
5373 /* build the new CDB for the physical disk I/O */
5374 if (disk_block > 0xffffffff) {
5375 cdb[0] = is_write ? WRITE_16 : READ_16;
5377 cdb[2] = (u8) (disk_block >> 56);
5378 cdb[3] = (u8) (disk_block >> 48);
5379 cdb[4] = (u8) (disk_block >> 40);
5380 cdb[5] = (u8) (disk_block >> 32);
5381 cdb[6] = (u8) (disk_block >> 24);
5382 cdb[7] = (u8) (disk_block >> 16);
5383 cdb[8] = (u8) (disk_block >> 8);
5384 cdb[9] = (u8) (disk_block);
5385 cdb[10] = (u8) (disk_block_cnt >> 24);
5386 cdb[11] = (u8) (disk_block_cnt >> 16);
5387 cdb[12] = (u8) (disk_block_cnt >> 8);
5388 cdb[13] = (u8) (disk_block_cnt);
5393 cdb[0] = is_write ? WRITE_10 : READ_10;
5395 cdb[2] = (u8) (disk_block >> 24);
5396 cdb[3] = (u8) (disk_block >> 16);
5397 cdb[4] = (u8) (disk_block >> 8);
5398 cdb[5] = (u8) (disk_block);
5400 cdb[7] = (u8) (disk_block_cnt >> 8);
5401 cdb[8] = (u8) (disk_block_cnt);
5405 return hpsa_scsi_ioaccel_queue_command(h, c, disk_handle, cdb, cdb_len,
5407 dev->phys_disk[map_index]);
5411 * Submit commands down the "normal" RAID stack path
5412 * All callers to hpsa_ciss_submit must check lockup_detected
5413 * beforehand, before (opt.) and after calling cmd_alloc
5415 static int hpsa_ciss_submit(struct ctlr_info *h,
5416 struct CommandList *c, struct scsi_cmnd *cmd,
5417 struct hpsa_scsi_dev_t *dev)
5419 cmd->host_scribble = (unsigned char *) c;
5420 c->cmd_type = CMD_SCSI;
5422 c->Header.ReplyQueue = 0; /* unused in simple mode */
5423 memcpy(&c->Header.LUN.LunAddrBytes[0], &dev->scsi3addr[0], 8);
5424 c->Header.tag = cpu_to_le64((c->cmdindex << DIRECT_LOOKUP_SHIFT));
5426 /* Fill in the request block... */
5428 c->Request.Timeout = 0;
5429 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB));
5430 c->Request.CDBLen = cmd->cmd_len;
5431 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len);
5432 switch (cmd->sc_data_direction) {
5434 c->Request.type_attr_dir =
5435 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_WRITE);
5437 case DMA_FROM_DEVICE:
5438 c->Request.type_attr_dir =
5439 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_READ);
5442 c->Request.type_attr_dir =
5443 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_NONE);
5445 case DMA_BIDIRECTIONAL:
5446 /* This can happen if a buggy application does a scsi passthru
5447 * and sets both inlen and outlen to non-zero. ( see
5448 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
5451 c->Request.type_attr_dir =
5452 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_RSVD);
5453 /* This is technically wrong, and hpsa controllers should
5454 * reject it with CMD_INVALID, which is the most correct
5455 * response, but non-fibre backends appear to let it
5456 * slide by, and give the same results as if this field
5457 * were set correctly. Either way is acceptable for
5458 * our purposes here.
5464 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
5465 cmd->sc_data_direction);
5470 if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */
5471 hpsa_cmd_resolve_and_free(h, c);
5472 return SCSI_MLQUEUE_HOST_BUSY;
5475 if (dev->in_reset) {
5476 hpsa_cmd_resolve_and_free(h, c);
5477 return SCSI_MLQUEUE_HOST_BUSY;
5480 enqueue_cmd_and_start_io(h, c);
5481 /* the cmd'll come back via intr handler in complete_scsi_command() */
5485 static void hpsa_cmd_init(struct ctlr_info *h, int index,
5486 struct CommandList *c)
5488 dma_addr_t cmd_dma_handle, err_dma_handle;
5490 /* Zero out all of commandlist except the last field, refcount */
5491 memset(c, 0, offsetof(struct CommandList, refcount));
5492 c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT));
5493 cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
5494 c->err_info = h->errinfo_pool + index;
5495 memset(c->err_info, 0, sizeof(*c->err_info));
5496 err_dma_handle = h->errinfo_pool_dhandle
5497 + index * sizeof(*c->err_info);
5498 c->cmdindex = index;
5499 c->busaddr = (u32) cmd_dma_handle;
5500 c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle);
5501 c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info));
5503 c->scsi_cmd = SCSI_CMD_IDLE;
5506 static void hpsa_preinitialize_commands(struct ctlr_info *h)
5510 for (i = 0; i < h->nr_cmds; i++) {
5511 struct CommandList *c = h->cmd_pool + i;
5513 hpsa_cmd_init(h, i, c);
5514 atomic_set(&c->refcount, 0);
5518 static inline void hpsa_cmd_partial_init(struct ctlr_info *h, int index,
5519 struct CommandList *c)
5521 dma_addr_t cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
5523 BUG_ON(c->cmdindex != index);
5525 memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
5526 memset(c->err_info, 0, sizeof(*c->err_info));
5527 c->busaddr = (u32) cmd_dma_handle;
5530 static int hpsa_ioaccel_submit(struct ctlr_info *h,
5531 struct CommandList *c, struct scsi_cmnd *cmd)
5533 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
5534 int rc = IO_ACCEL_INELIGIBLE;
5537 return SCSI_MLQUEUE_HOST_BUSY;
5540 return SCSI_MLQUEUE_HOST_BUSY;
5542 if (hpsa_simple_mode)
5543 return IO_ACCEL_INELIGIBLE;
5545 cmd->host_scribble = (unsigned char *) c;
5547 if (dev->offload_enabled) {
5548 hpsa_cmd_init(h, c->cmdindex, c);
5549 c->cmd_type = CMD_SCSI;
5551 rc = hpsa_scsi_ioaccel_raid_map(h, c);
5552 if (rc < 0) /* scsi_dma_map failed. */
5553 rc = SCSI_MLQUEUE_HOST_BUSY;
5554 } else if (dev->hba_ioaccel_enabled) {
5555 hpsa_cmd_init(h, c->cmdindex, c);
5556 c->cmd_type = CMD_SCSI;
5558 rc = hpsa_scsi_ioaccel_direct_map(h, c);
5559 if (rc < 0) /* scsi_dma_map failed. */
5560 rc = SCSI_MLQUEUE_HOST_BUSY;
5565 static void hpsa_command_resubmit_worker(struct work_struct *work)
5567 struct scsi_cmnd *cmd;
5568 struct hpsa_scsi_dev_t *dev;
5569 struct CommandList *c = container_of(work, struct CommandList, work);
5572 dev = cmd->device->hostdata;
5574 cmd->result = DID_NO_CONNECT << 16;
5575 return hpsa_cmd_free_and_done(c->h, c, cmd);
5578 if (dev->in_reset) {
5579 cmd->result = DID_RESET << 16;
5580 return hpsa_cmd_free_and_done(c->h, c, cmd);
5583 if (c->cmd_type == CMD_IOACCEL2) {
5584 struct ctlr_info *h = c->h;
5585 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
5588 if (c2->error_data.serv_response ==
5589 IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL) {
5590 rc = hpsa_ioaccel_submit(h, c, cmd);
5593 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
5595 * If we get here, it means dma mapping failed.
5596 * Try again via scsi mid layer, which will
5597 * then get SCSI_MLQUEUE_HOST_BUSY.
5599 cmd->result = DID_IMM_RETRY << 16;
5600 return hpsa_cmd_free_and_done(h, c, cmd);
5602 /* else, fall thru and resubmit down CISS path */
5605 hpsa_cmd_partial_init(c->h, c->cmdindex, c);
5606 if (hpsa_ciss_submit(c->h, c, cmd, dev)) {
5608 * If we get here, it means dma mapping failed. Try
5609 * again via scsi mid layer, which will then get
5610 * SCSI_MLQUEUE_HOST_BUSY.
5612 * hpsa_ciss_submit will have already freed c
5613 * if it encountered a dma mapping failure.
5615 cmd->result = DID_IMM_RETRY << 16;
5616 cmd->scsi_done(cmd);
5620 /* Running in struct Scsi_Host->host_lock less mode */
5621 static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
5623 struct ctlr_info *h;
5624 struct hpsa_scsi_dev_t *dev;
5625 struct CommandList *c;
5628 /* Get the ptr to our adapter structure out of cmd->host. */
5629 h = sdev_to_hba(cmd->device);
5631 BUG_ON(cmd->request->tag < 0);
5633 dev = cmd->device->hostdata;
5635 cmd->result = DID_NO_CONNECT << 16;
5636 cmd->scsi_done(cmd);
5641 cmd->result = DID_NO_CONNECT << 16;
5642 cmd->scsi_done(cmd);
5646 if (unlikely(lockup_detected(h))) {
5647 cmd->result = DID_NO_CONNECT << 16;
5648 cmd->scsi_done(cmd);
5653 return SCSI_MLQUEUE_DEVICE_BUSY;
5655 c = cmd_tagged_alloc(h, cmd);
5657 return SCSI_MLQUEUE_DEVICE_BUSY;
5660 * This is necessary because the SML doesn't zero out this field during
5666 * Call alternate submit routine for I/O accelerated commands.
5667 * Retries always go down the normal I/O path.
5669 if (likely(cmd->retries == 0 &&
5670 !blk_rq_is_passthrough(cmd->request) &&
5671 h->acciopath_status)) {
5672 rc = hpsa_ioaccel_submit(h, c, cmd);
5675 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
5676 hpsa_cmd_resolve_and_free(h, c);
5677 return SCSI_MLQUEUE_HOST_BUSY;
5680 return hpsa_ciss_submit(h, c, cmd, dev);
5683 static void hpsa_scan_complete(struct ctlr_info *h)
5685 unsigned long flags;
5687 spin_lock_irqsave(&h->scan_lock, flags);
5688 h->scan_finished = 1;
5689 wake_up(&h->scan_wait_queue);
5690 spin_unlock_irqrestore(&h->scan_lock, flags);
5693 static void hpsa_scan_start(struct Scsi_Host *sh)
5695 struct ctlr_info *h = shost_to_hba(sh);
5696 unsigned long flags;
5699 * Don't let rescans be initiated on a controller known to be locked
5700 * up. If the controller locks up *during* a rescan, that thread is
5701 * probably hosed, but at least we can prevent new rescan threads from
5702 * piling up on a locked up controller.
5704 if (unlikely(lockup_detected(h)))
5705 return hpsa_scan_complete(h);
5708 * If a scan is already waiting to run, no need to add another
5710 spin_lock_irqsave(&h->scan_lock, flags);
5711 if (h->scan_waiting) {
5712 spin_unlock_irqrestore(&h->scan_lock, flags);
5716 spin_unlock_irqrestore(&h->scan_lock, flags);
5718 /* wait until any scan already in progress is finished. */
5720 spin_lock_irqsave(&h->scan_lock, flags);
5721 if (h->scan_finished)
5723 h->scan_waiting = 1;
5724 spin_unlock_irqrestore(&h->scan_lock, flags);
5725 wait_event(h->scan_wait_queue, h->scan_finished);
5726 /* Note: We don't need to worry about a race between this
5727 * thread and driver unload because the midlayer will
5728 * have incremented the reference count, so unload won't
5729 * happen if we're in here.
5732 h->scan_finished = 0; /* mark scan as in progress */
5733 h->scan_waiting = 0;
5734 spin_unlock_irqrestore(&h->scan_lock, flags);
5736 if (unlikely(lockup_detected(h)))
5737 return hpsa_scan_complete(h);
5740 * Do the scan after a reset completion
5742 spin_lock_irqsave(&h->reset_lock, flags);
5743 if (h->reset_in_progress) {
5744 h->drv_req_rescan = 1;
5745 spin_unlock_irqrestore(&h->reset_lock, flags);
5746 hpsa_scan_complete(h);
5749 spin_unlock_irqrestore(&h->reset_lock, flags);
5751 hpsa_update_scsi_devices(h);
5753 hpsa_scan_complete(h);
5756 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth)
5758 struct hpsa_scsi_dev_t *logical_drive = sdev->hostdata;
5765 else if (qdepth > logical_drive->queue_depth)
5766 qdepth = logical_drive->queue_depth;
5768 return scsi_change_queue_depth(sdev, qdepth);
5771 static int hpsa_scan_finished(struct Scsi_Host *sh,
5772 unsigned long elapsed_time)
5774 struct ctlr_info *h = shost_to_hba(sh);
5775 unsigned long flags;
5778 spin_lock_irqsave(&h->scan_lock, flags);
5779 finished = h->scan_finished;
5780 spin_unlock_irqrestore(&h->scan_lock, flags);
5784 static int hpsa_scsi_host_alloc(struct ctlr_info *h)
5786 struct Scsi_Host *sh;
5788 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h));
5790 dev_err(&h->pdev->dev, "scsi_host_alloc failed\n");
5797 sh->max_channel = 3;
5798 sh->max_cmd_len = MAX_COMMAND_SIZE;
5799 sh->max_lun = HPSA_MAX_LUN;
5800 sh->max_id = HPSA_MAX_LUN;
5801 sh->can_queue = h->nr_cmds - HPSA_NRESERVED_CMDS;
5802 sh->cmd_per_lun = sh->can_queue;
5803 sh->sg_tablesize = h->maxsgentries;
5804 sh->transportt = hpsa_sas_transport_template;
5805 sh->hostdata[0] = (unsigned long) h;
5806 sh->irq = pci_irq_vector(h->pdev, 0);
5807 sh->unique_id = sh->irq;
5813 static int hpsa_scsi_add_host(struct ctlr_info *h)
5817 rv = scsi_add_host(h->scsi_host, &h->pdev->dev);
5819 dev_err(&h->pdev->dev, "scsi_add_host failed\n");
5822 scsi_scan_host(h->scsi_host);
5827 * The block layer has already gone to the trouble of picking out a unique,
5828 * small-integer tag for this request. We use an offset from that value as
5829 * an index to select our command block. (The offset allows us to reserve the
5830 * low-numbered entries for our own uses.)
5832 static int hpsa_get_cmd_index(struct scsi_cmnd *scmd)
5834 int idx = scmd->request->tag;
5839 /* Offset to leave space for internal cmds. */
5840 return idx += HPSA_NRESERVED_CMDS;
5844 * Send a TEST_UNIT_READY command to the specified LUN using the specified
5845 * reply queue; returns zero if the unit is ready, and non-zero otherwise.
5847 static int hpsa_send_test_unit_ready(struct ctlr_info *h,
5848 struct CommandList *c, unsigned char lunaddr[],
5853 /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */
5854 (void) fill_cmd(c, TEST_UNIT_READY, h,
5855 NULL, 0, 0, lunaddr, TYPE_CMD);
5856 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
5859 /* no unmap needed here because no data xfer. */
5861 /* Check if the unit is already ready. */
5862 if (c->err_info->CommandStatus == CMD_SUCCESS)
5866 * The first command sent after reset will receive "unit attention" to
5867 * indicate that the LUN has been reset...this is actually what we're
5868 * looking for (but, success is good too).
5870 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
5871 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
5872 (c->err_info->SenseInfo[2] == NO_SENSE ||
5873 c->err_info->SenseInfo[2] == UNIT_ATTENTION))
5880 * Wait for a TEST_UNIT_READY command to complete, retrying as necessary;
5881 * returns zero when the unit is ready, and non-zero when giving up.
5883 static int hpsa_wait_for_test_unit_ready(struct ctlr_info *h,
5884 struct CommandList *c,
5885 unsigned char lunaddr[], int reply_queue)
5889 int waittime = 1; /* seconds */
5891 /* Send test unit ready until device ready, or give up. */
5892 for (count = 0; count < HPSA_TUR_RETRY_LIMIT; count++) {
5895 * Wait for a bit. do this first, because if we send
5896 * the TUR right away, the reset will just abort it.
5898 msleep(1000 * waittime);
5900 rc = hpsa_send_test_unit_ready(h, c, lunaddr, reply_queue);
5904 /* Increase wait time with each try, up to a point. */
5905 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS)
5908 dev_warn(&h->pdev->dev,
5909 "waiting %d secs for device to become ready.\n",
5916 static int wait_for_device_to_become_ready(struct ctlr_info *h,
5917 unsigned char lunaddr[],
5924 struct CommandList *c;
5929 * If no specific reply queue was requested, then send the TUR
5930 * repeatedly, requesting a reply on each reply queue; otherwise execute
5931 * the loop exactly once using only the specified queue.
5933 if (reply_queue == DEFAULT_REPLY_QUEUE) {
5935 last_queue = h->nreply_queues - 1;
5937 first_queue = reply_queue;
5938 last_queue = reply_queue;
5941 for (rq = first_queue; rq <= last_queue; rq++) {
5942 rc = hpsa_wait_for_test_unit_ready(h, c, lunaddr, rq);
5948 dev_warn(&h->pdev->dev, "giving up on device.\n");
5950 dev_warn(&h->pdev->dev, "device is ready.\n");
5956 /* Need at least one of these error handlers to keep ../scsi/hosts.c from
5957 * complaining. Doing a host- or bus-reset can't do anything good here.
5959 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
5963 struct ctlr_info *h;
5964 struct hpsa_scsi_dev_t *dev = NULL;
5967 unsigned long flags;
5969 /* find the controller to which the command to be aborted was sent */
5970 h = sdev_to_hba(scsicmd->device);
5971 if (h == NULL) /* paranoia */
5974 spin_lock_irqsave(&h->reset_lock, flags);
5975 h->reset_in_progress = 1;
5976 spin_unlock_irqrestore(&h->reset_lock, flags);
5978 if (lockup_detected(h)) {
5980 goto return_reset_status;
5983 dev = scsicmd->device->hostdata;
5985 dev_err(&h->pdev->dev, "%s: device lookup failed\n", __func__);
5987 goto return_reset_status;
5990 if (dev->devtype == TYPE_ENCLOSURE) {
5992 goto return_reset_status;
5995 /* if controller locked up, we can guarantee command won't complete */
5996 if (lockup_detected(h)) {
5997 snprintf(msg, sizeof(msg),
5998 "cmd %d RESET FAILED, lockup detected",
5999 hpsa_get_cmd_index(scsicmd));
6000 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
6002 goto return_reset_status;
6005 /* this reset request might be the result of a lockup; check */
6006 if (detect_controller_lockup(h)) {
6007 snprintf(msg, sizeof(msg),
6008 "cmd %d RESET FAILED, new lockup detected",
6009 hpsa_get_cmd_index(scsicmd));
6010 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
6012 goto return_reset_status;
6015 /* Do not attempt on controller */
6016 if (is_hba_lunid(dev->scsi3addr)) {
6018 goto return_reset_status;
6021 if (is_logical_dev_addr_mode(dev->scsi3addr))
6022 reset_type = HPSA_DEVICE_RESET_MSG;
6024 reset_type = HPSA_PHYS_TARGET_RESET;
6026 sprintf(msg, "resetting %s",
6027 reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ");
6028 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
6031 * wait to see if any commands will complete before sending reset
6033 dev->in_reset = true; /* block any new cmds from OS for this device */
6034 for (i = 0; i < 10; i++) {
6035 if (atomic_read(&dev->commands_outstanding) > 0)
6041 /* send a reset to the SCSI LUN which the command was sent to */
6042 rc = hpsa_do_reset(h, dev, reset_type, DEFAULT_REPLY_QUEUE);
6048 sprintf(msg, "reset %s %s",
6049 reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ",
6050 rc == SUCCESS ? "completed successfully" : "failed");
6051 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
6053 return_reset_status:
6054 spin_lock_irqsave(&h->reset_lock, flags);
6055 h->reset_in_progress = 0;
6057 dev->in_reset = false;
6058 spin_unlock_irqrestore(&h->reset_lock, flags);
6063 * For operations with an associated SCSI command, a command block is allocated
6064 * at init, and managed by cmd_tagged_alloc() and cmd_tagged_free() using the
6065 * block request tag as an index into a table of entries. cmd_tagged_free() is
6066 * the complement, although cmd_free() may be called instead.
6068 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
6069 struct scsi_cmnd *scmd)
6071 int idx = hpsa_get_cmd_index(scmd);
6072 struct CommandList *c = h->cmd_pool + idx;
6074 if (idx < HPSA_NRESERVED_CMDS || idx >= h->nr_cmds) {
6075 dev_err(&h->pdev->dev, "Bad block tag: %d not in [%d..%d]\n",
6076 idx, HPSA_NRESERVED_CMDS, h->nr_cmds - 1);
6077 /* The index value comes from the block layer, so if it's out of
6078 * bounds, it's probably not our bug.
6083 if (unlikely(!hpsa_is_cmd_idle(c))) {
6085 * We expect that the SCSI layer will hand us a unique tag
6086 * value. Thus, there should never be a collision here between
6087 * two requests...because if the selected command isn't idle
6088 * then someone is going to be very disappointed.
6090 if (idx != h->last_collision_tag) { /* Print once per tag */
6091 dev_warn(&h->pdev->dev,
6092 "%s: tag collision (tag=%d)\n", __func__, idx);
6094 scsi_print_command(scmd);
6095 h->last_collision_tag = idx;
6100 atomic_inc(&c->refcount);
6102 hpsa_cmd_partial_init(h, idx, c);
6106 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c)
6109 * Release our reference to the block. We don't need to do anything
6110 * else to free it, because it is accessed by index.
6112 (void)atomic_dec(&c->refcount);
6116 * For operations that cannot sleep, a command block is allocated at init,
6117 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
6118 * which ones are free or in use. Lock must be held when calling this.
6119 * cmd_free() is the complement.
6120 * This function never gives up and returns NULL. If it hangs,
6121 * another thread must call cmd_free() to free some tags.
6124 static struct CommandList *cmd_alloc(struct ctlr_info *h)
6126 struct CommandList *c;
6131 * There is some *extremely* small but non-zero chance that that
6132 * multiple threads could get in here, and one thread could
6133 * be scanning through the list of bits looking for a free
6134 * one, but the free ones are always behind him, and other
6135 * threads sneak in behind him and eat them before he can
6136 * get to them, so that while there is always a free one, a
6137 * very unlucky thread might be starved anyway, never able to
6138 * beat the other threads. In reality, this happens so
6139 * infrequently as to be indistinguishable from never.
6141 * Note that we start allocating commands before the SCSI host structure
6142 * is initialized. Since the search starts at bit zero, this
6143 * all works, since we have at least one command structure available;
6144 * however, it means that the structures with the low indexes have to be
6145 * reserved for driver-initiated requests, while requests from the block
6146 * layer will use the higher indexes.
6150 i = find_next_zero_bit(h->cmd_pool_bits,
6151 HPSA_NRESERVED_CMDS,
6153 if (unlikely(i >= HPSA_NRESERVED_CMDS)) {
6157 c = h->cmd_pool + i;
6158 refcount = atomic_inc_return(&c->refcount);
6159 if (unlikely(refcount > 1)) {
6160 cmd_free(h, c); /* already in use */
6161 offset = (i + 1) % HPSA_NRESERVED_CMDS;
6164 set_bit(i & (BITS_PER_LONG - 1),
6165 h->cmd_pool_bits + (i / BITS_PER_LONG));
6166 break; /* it's ours now. */
6168 hpsa_cmd_partial_init(h, i, c);
6174 * This is the complementary operation to cmd_alloc(). Note, however, in some
6175 * corner cases it may also be used to free blocks allocated by
6176 * cmd_tagged_alloc() in which case the ref-count decrement does the trick and
6177 * the clear-bit is harmless.
6179 static void cmd_free(struct ctlr_info *h, struct CommandList *c)
6181 if (atomic_dec_and_test(&c->refcount)) {
6184 i = c - h->cmd_pool;
6185 clear_bit(i & (BITS_PER_LONG - 1),
6186 h->cmd_pool_bits + (i / BITS_PER_LONG));
6190 #ifdef CONFIG_COMPAT
6192 static int hpsa_ioctl32_passthru(struct scsi_device *dev, unsigned int cmd,
6195 IOCTL32_Command_struct __user *arg32 =
6196 (IOCTL32_Command_struct __user *) arg;
6197 IOCTL_Command_struct arg64;
6198 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
6202 memset(&arg64, 0, sizeof(arg64));
6204 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
6205 sizeof(arg64.LUN_info));
6206 err |= copy_from_user(&arg64.Request, &arg32->Request,
6207 sizeof(arg64.Request));
6208 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
6209 sizeof(arg64.error_info));
6210 err |= get_user(arg64.buf_size, &arg32->buf_size);
6211 err |= get_user(cp, &arg32->buf);
6212 arg64.buf = compat_ptr(cp);
6213 err |= copy_to_user(p, &arg64, sizeof(arg64));
6218 err = hpsa_ioctl(dev, CCISS_PASSTHRU, p);
6221 err |= copy_in_user(&arg32->error_info, &p->error_info,
6222 sizeof(arg32->error_info));
6228 static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
6229 unsigned int cmd, void __user *arg)
6231 BIG_IOCTL32_Command_struct __user *arg32 =
6232 (BIG_IOCTL32_Command_struct __user *) arg;
6233 BIG_IOCTL_Command_struct arg64;
6234 BIG_IOCTL_Command_struct __user *p =
6235 compat_alloc_user_space(sizeof(arg64));
6239 memset(&arg64, 0, sizeof(arg64));
6241 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
6242 sizeof(arg64.LUN_info));
6243 err |= copy_from_user(&arg64.Request, &arg32->Request,
6244 sizeof(arg64.Request));
6245 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
6246 sizeof(arg64.error_info));
6247 err |= get_user(arg64.buf_size, &arg32->buf_size);
6248 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
6249 err |= get_user(cp, &arg32->buf);
6250 arg64.buf = compat_ptr(cp);
6251 err |= copy_to_user(p, &arg64, sizeof(arg64));
6256 err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, p);
6259 err |= copy_in_user(&arg32->error_info, &p->error_info,
6260 sizeof(arg32->error_info));
6266 static int hpsa_compat_ioctl(struct scsi_device *dev, unsigned int cmd,
6270 case CCISS_GETPCIINFO:
6271 case CCISS_GETINTINFO:
6272 case CCISS_SETINTINFO:
6273 case CCISS_GETNODENAME:
6274 case CCISS_SETNODENAME:
6275 case CCISS_GETHEARTBEAT:
6276 case CCISS_GETBUSTYPES:
6277 case CCISS_GETFIRMVER:
6278 case CCISS_GETDRIVVER:
6279 case CCISS_REVALIDVOLS:
6280 case CCISS_DEREGDISK:
6281 case CCISS_REGNEWDISK:
6283 case CCISS_RESCANDISK:
6284 case CCISS_GETLUNINFO:
6285 return hpsa_ioctl(dev, cmd, arg);
6287 case CCISS_PASSTHRU32:
6288 return hpsa_ioctl32_passthru(dev, cmd, arg);
6289 case CCISS_BIG_PASSTHRU32:
6290 return hpsa_ioctl32_big_passthru(dev, cmd, arg);
6293 return -ENOIOCTLCMD;
6298 static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp)
6300 struct hpsa_pci_info pciinfo;
6304 pciinfo.domain = pci_domain_nr(h->pdev->bus);
6305 pciinfo.bus = h->pdev->bus->number;
6306 pciinfo.dev_fn = h->pdev->devfn;
6307 pciinfo.board_id = h->board_id;
6308 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo)))
6313 static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp)
6315 DriverVer_type DriverVer;
6316 unsigned char vmaj, vmin, vsubmin;
6319 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu",
6320 &vmaj, &vmin, &vsubmin);
6322 dev_info(&h->pdev->dev, "driver version string '%s' "
6323 "unrecognized.", HPSA_DRIVER_VERSION);
6328 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin;
6331 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type)))
6336 static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
6338 IOCTL_Command_struct iocommand;
6339 struct CommandList *c;
6346 if (!capable(CAP_SYS_RAWIO))
6348 if (copy_from_user(&iocommand, argp, sizeof(iocommand)))
6350 if ((iocommand.buf_size < 1) &&
6351 (iocommand.Request.Type.Direction != XFER_NONE)) {
6354 if (iocommand.buf_size > 0) {
6355 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
6358 if (iocommand.Request.Type.Direction & XFER_WRITE) {
6359 /* Copy the data into the buffer we created */
6360 if (copy_from_user(buff, iocommand.buf,
6361 iocommand.buf_size)) {
6366 memset(buff, 0, iocommand.buf_size);
6371 /* Fill in the command type */
6372 c->cmd_type = CMD_IOCTL_PEND;
6373 c->scsi_cmd = SCSI_CMD_BUSY;
6374 /* Fill in Command Header */
6375 c->Header.ReplyQueue = 0; /* unused in simple mode */
6376 if (iocommand.buf_size > 0) { /* buffer to fill */
6377 c->Header.SGList = 1;
6378 c->Header.SGTotal = cpu_to_le16(1);
6379 } else { /* no buffers to fill */
6380 c->Header.SGList = 0;
6381 c->Header.SGTotal = cpu_to_le16(0);
6383 memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN));
6385 /* Fill in Request block */
6386 memcpy(&c->Request, &iocommand.Request,
6387 sizeof(c->Request));
6389 /* Fill in the scatter gather information */
6390 if (iocommand.buf_size > 0) {
6391 temp64 = dma_map_single(&h->pdev->dev, buff,
6392 iocommand.buf_size, DMA_BIDIRECTIONAL);
6393 if (dma_mapping_error(&h->pdev->dev, (dma_addr_t) temp64)) {
6394 c->SG[0].Addr = cpu_to_le64(0);
6395 c->SG[0].Len = cpu_to_le32(0);
6399 c->SG[0].Addr = cpu_to_le64(temp64);
6400 c->SG[0].Len = cpu_to_le32(iocommand.buf_size);
6401 c->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* not chaining */
6403 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
6405 if (iocommand.buf_size > 0)
6406 hpsa_pci_unmap(h->pdev, c, 1, DMA_BIDIRECTIONAL);
6407 check_ioctl_unit_attention(h, c);
6413 /* Copy the error information out */
6414 memcpy(&iocommand.error_info, c->err_info,
6415 sizeof(iocommand.error_info));
6416 if (copy_to_user(argp, &iocommand, sizeof(iocommand))) {
6420 if ((iocommand.Request.Type.Direction & XFER_READ) &&
6421 iocommand.buf_size > 0) {
6422 /* Copy the data out of the buffer we created */
6423 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
6435 static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
6437 BIG_IOCTL_Command_struct *ioc;
6438 struct CommandList *c;
6439 unsigned char **buff = NULL;
6440 int *buff_size = NULL;
6446 BYTE __user *data_ptr;
6450 if (!capable(CAP_SYS_RAWIO))
6452 ioc = vmemdup_user(argp, sizeof(*ioc));
6454 status = PTR_ERR(ioc);
6457 if ((ioc->buf_size < 1) &&
6458 (ioc->Request.Type.Direction != XFER_NONE)) {
6462 /* Check kmalloc limits using all SGs */
6463 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
6467 if (ioc->buf_size > ioc->malloc_size * SG_ENTRIES_IN_CMD) {
6471 buff = kcalloc(SG_ENTRIES_IN_CMD, sizeof(char *), GFP_KERNEL);
6476 buff_size = kmalloc_array(SG_ENTRIES_IN_CMD, sizeof(int), GFP_KERNEL);
6481 left = ioc->buf_size;
6482 data_ptr = ioc->buf;
6484 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
6485 buff_size[sg_used] = sz;
6486 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
6487 if (buff[sg_used] == NULL) {
6491 if (ioc->Request.Type.Direction & XFER_WRITE) {
6492 if (copy_from_user(buff[sg_used], data_ptr, sz)) {
6497 memset(buff[sg_used], 0, sz);
6504 c->cmd_type = CMD_IOCTL_PEND;
6505 c->scsi_cmd = SCSI_CMD_BUSY;
6506 c->Header.ReplyQueue = 0;
6507 c->Header.SGList = (u8) sg_used;
6508 c->Header.SGTotal = cpu_to_le16(sg_used);
6509 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN));
6510 memcpy(&c->Request, &ioc->Request, sizeof(c->Request));
6511 if (ioc->buf_size > 0) {
6513 for (i = 0; i < sg_used; i++) {
6514 temp64 = dma_map_single(&h->pdev->dev, buff[i],
6515 buff_size[i], DMA_BIDIRECTIONAL);
6516 if (dma_mapping_error(&h->pdev->dev,
6517 (dma_addr_t) temp64)) {
6518 c->SG[i].Addr = cpu_to_le64(0);
6519 c->SG[i].Len = cpu_to_le32(0);
6520 hpsa_pci_unmap(h->pdev, c, i,
6525 c->SG[i].Addr = cpu_to_le64(temp64);
6526 c->SG[i].Len = cpu_to_le32(buff_size[i]);
6527 c->SG[i].Ext = cpu_to_le32(0);
6529 c->SG[--i].Ext = cpu_to_le32(HPSA_SG_LAST);
6531 status = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
6534 hpsa_pci_unmap(h->pdev, c, sg_used, DMA_BIDIRECTIONAL);
6535 check_ioctl_unit_attention(h, c);
6541 /* Copy the error information out */
6542 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info));
6543 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
6547 if ((ioc->Request.Type.Direction & XFER_READ) && ioc->buf_size > 0) {
6550 /* Copy the data out of the buffer we created */
6551 BYTE __user *ptr = ioc->buf;
6552 for (i = 0; i < sg_used; i++) {
6553 if (copy_to_user(ptr, buff[i], buff_size[i])) {
6557 ptr += buff_size[i];
6567 for (i = 0; i < sg_used; i++)
6576 static void check_ioctl_unit_attention(struct ctlr_info *h,
6577 struct CommandList *c)
6579 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
6580 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
6581 (void) check_for_unit_attention(h, c);
6587 static int hpsa_ioctl(struct scsi_device *dev, unsigned int cmd,
6590 struct ctlr_info *h;
6591 void __user *argp = (void __user *)arg;
6594 h = sdev_to_hba(dev);
6597 case CCISS_DEREGDISK:
6598 case CCISS_REGNEWDISK:
6600 hpsa_scan_start(h->scsi_host);
6602 case CCISS_GETPCIINFO:
6603 return hpsa_getpciinfo_ioctl(h, argp);
6604 case CCISS_GETDRIVVER:
6605 return hpsa_getdrivver_ioctl(h, argp);
6606 case CCISS_PASSTHRU:
6607 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6609 rc = hpsa_passthru_ioctl(h, argp);
6610 atomic_inc(&h->passthru_cmds_avail);
6612 case CCISS_BIG_PASSTHRU:
6613 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6615 rc = hpsa_big_passthru_ioctl(h, argp);
6616 atomic_inc(&h->passthru_cmds_avail);
6623 static void hpsa_send_host_reset(struct ctlr_info *h, u8 reset_type)
6625 struct CommandList *c;
6629 /* fill_cmd can't fail here, no data buffer to map */
6630 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0,
6631 RAID_CTLR_LUNID, TYPE_MSG);
6632 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */
6634 enqueue_cmd_and_start_io(h, c);
6635 /* Don't wait for completion, the reset won't complete. Don't free
6636 * the command either. This is the last command we will send before
6637 * re-initializing everything, so it doesn't matter and won't leak.
6642 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
6643 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
6646 enum dma_data_direction dir = DMA_NONE;
6648 c->cmd_type = CMD_IOCTL_PEND;
6649 c->scsi_cmd = SCSI_CMD_BUSY;
6650 c->Header.ReplyQueue = 0;
6651 if (buff != NULL && size > 0) {
6652 c->Header.SGList = 1;
6653 c->Header.SGTotal = cpu_to_le16(1);
6655 c->Header.SGList = 0;
6656 c->Header.SGTotal = cpu_to_le16(0);
6658 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
6660 if (cmd_type == TYPE_CMD) {
6663 /* are we trying to read a vital product page */
6664 if (page_code & VPD_PAGE) {
6665 c->Request.CDB[1] = 0x01;
6666 c->Request.CDB[2] = (page_code & 0xff);
6668 c->Request.CDBLen = 6;
6669 c->Request.type_attr_dir =
6670 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6671 c->Request.Timeout = 0;
6672 c->Request.CDB[0] = HPSA_INQUIRY;
6673 c->Request.CDB[4] = size & 0xFF;
6675 case RECEIVE_DIAGNOSTIC:
6676 c->Request.CDBLen = 6;
6677 c->Request.type_attr_dir =
6678 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6679 c->Request.Timeout = 0;
6680 c->Request.CDB[0] = cmd;
6681 c->Request.CDB[1] = 1;
6682 c->Request.CDB[2] = 1;
6683 c->Request.CDB[3] = (size >> 8) & 0xFF;
6684 c->Request.CDB[4] = size & 0xFF;
6686 case HPSA_REPORT_LOG:
6687 case HPSA_REPORT_PHYS:
6688 /* Talking to controller so It's a physical command
6689 mode = 00 target = 0. Nothing to write.
6691 c->Request.CDBLen = 12;
6692 c->Request.type_attr_dir =
6693 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6694 c->Request.Timeout = 0;
6695 c->Request.CDB[0] = cmd;
6696 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6697 c->Request.CDB[7] = (size >> 16) & 0xFF;
6698 c->Request.CDB[8] = (size >> 8) & 0xFF;
6699 c->Request.CDB[9] = size & 0xFF;
6701 case BMIC_SENSE_DIAG_OPTIONS:
6702 c->Request.CDBLen = 16;
6703 c->Request.type_attr_dir =
6704 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6705 c->Request.Timeout = 0;
6706 /* Spec says this should be BMIC_WRITE */
6707 c->Request.CDB[0] = BMIC_READ;
6708 c->Request.CDB[6] = BMIC_SENSE_DIAG_OPTIONS;
6710 case BMIC_SET_DIAG_OPTIONS:
6711 c->Request.CDBLen = 16;
6712 c->Request.type_attr_dir =
6713 TYPE_ATTR_DIR(cmd_type,
6714 ATTR_SIMPLE, XFER_WRITE);
6715 c->Request.Timeout = 0;
6716 c->Request.CDB[0] = BMIC_WRITE;
6717 c->Request.CDB[6] = BMIC_SET_DIAG_OPTIONS;
6719 case HPSA_CACHE_FLUSH:
6720 c->Request.CDBLen = 12;
6721 c->Request.type_attr_dir =
6722 TYPE_ATTR_DIR(cmd_type,
6723 ATTR_SIMPLE, XFER_WRITE);
6724 c->Request.Timeout = 0;
6725 c->Request.CDB[0] = BMIC_WRITE;
6726 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
6727 c->Request.CDB[7] = (size >> 8) & 0xFF;
6728 c->Request.CDB[8] = size & 0xFF;
6730 case TEST_UNIT_READY:
6731 c->Request.CDBLen = 6;
6732 c->Request.type_attr_dir =
6733 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6734 c->Request.Timeout = 0;
6736 case HPSA_GET_RAID_MAP:
6737 c->Request.CDBLen = 12;
6738 c->Request.type_attr_dir =
6739 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6740 c->Request.Timeout = 0;
6741 c->Request.CDB[0] = HPSA_CISS_READ;
6742 c->Request.CDB[1] = cmd;
6743 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6744 c->Request.CDB[7] = (size >> 16) & 0xFF;
6745 c->Request.CDB[8] = (size >> 8) & 0xFF;
6746 c->Request.CDB[9] = size & 0xFF;
6748 case BMIC_SENSE_CONTROLLER_PARAMETERS:
6749 c->Request.CDBLen = 10;
6750 c->Request.type_attr_dir =
6751 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6752 c->Request.Timeout = 0;
6753 c->Request.CDB[0] = BMIC_READ;
6754 c->Request.CDB[6] = BMIC_SENSE_CONTROLLER_PARAMETERS;
6755 c->Request.CDB[7] = (size >> 16) & 0xFF;
6756 c->Request.CDB[8] = (size >> 8) & 0xFF;
6758 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
6759 c->Request.CDBLen = 10;
6760 c->Request.type_attr_dir =
6761 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6762 c->Request.Timeout = 0;
6763 c->Request.CDB[0] = BMIC_READ;
6764 c->Request.CDB[6] = BMIC_IDENTIFY_PHYSICAL_DEVICE;
6765 c->Request.CDB[7] = (size >> 16) & 0xFF;
6766 c->Request.CDB[8] = (size >> 8) & 0XFF;
6768 case BMIC_SENSE_SUBSYSTEM_INFORMATION:
6769 c->Request.CDBLen = 10;
6770 c->Request.type_attr_dir =
6771 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6772 c->Request.Timeout = 0;
6773 c->Request.CDB[0] = BMIC_READ;
6774 c->Request.CDB[6] = BMIC_SENSE_SUBSYSTEM_INFORMATION;
6775 c->Request.CDB[7] = (size >> 16) & 0xFF;
6776 c->Request.CDB[8] = (size >> 8) & 0XFF;
6778 case BMIC_SENSE_STORAGE_BOX_PARAMS:
6779 c->Request.CDBLen = 10;
6780 c->Request.type_attr_dir =
6781 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6782 c->Request.Timeout = 0;
6783 c->Request.CDB[0] = BMIC_READ;
6784 c->Request.CDB[6] = BMIC_SENSE_STORAGE_BOX_PARAMS;
6785 c->Request.CDB[7] = (size >> 16) & 0xFF;
6786 c->Request.CDB[8] = (size >> 8) & 0XFF;
6788 case BMIC_IDENTIFY_CONTROLLER:
6789 c->Request.CDBLen = 10;
6790 c->Request.type_attr_dir =
6791 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6792 c->Request.Timeout = 0;
6793 c->Request.CDB[0] = BMIC_READ;
6794 c->Request.CDB[1] = 0;
6795 c->Request.CDB[2] = 0;
6796 c->Request.CDB[3] = 0;
6797 c->Request.CDB[4] = 0;
6798 c->Request.CDB[5] = 0;
6799 c->Request.CDB[6] = BMIC_IDENTIFY_CONTROLLER;
6800 c->Request.CDB[7] = (size >> 16) & 0xFF;
6801 c->Request.CDB[8] = (size >> 8) & 0XFF;
6802 c->Request.CDB[9] = 0;
6805 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd);
6808 } else if (cmd_type == TYPE_MSG) {
6811 case HPSA_PHYS_TARGET_RESET:
6812 c->Request.CDBLen = 16;
6813 c->Request.type_attr_dir =
6814 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6815 c->Request.Timeout = 0; /* Don't time out */
6816 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
6817 c->Request.CDB[0] = HPSA_RESET;
6818 c->Request.CDB[1] = HPSA_TARGET_RESET_TYPE;
6819 /* Physical target reset needs no control bytes 4-7*/
6820 c->Request.CDB[4] = 0x00;
6821 c->Request.CDB[5] = 0x00;
6822 c->Request.CDB[6] = 0x00;
6823 c->Request.CDB[7] = 0x00;
6825 case HPSA_DEVICE_RESET_MSG:
6826 c->Request.CDBLen = 16;
6827 c->Request.type_attr_dir =
6828 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6829 c->Request.Timeout = 0; /* Don't time out */
6830 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
6831 c->Request.CDB[0] = cmd;
6832 c->Request.CDB[1] = HPSA_RESET_TYPE_LUN;
6833 /* If bytes 4-7 are zero, it means reset the */
6835 c->Request.CDB[4] = 0x00;
6836 c->Request.CDB[5] = 0x00;
6837 c->Request.CDB[6] = 0x00;
6838 c->Request.CDB[7] = 0x00;
6841 dev_warn(&h->pdev->dev, "unknown message type %d\n",
6846 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type);
6850 switch (GET_DIR(c->Request.type_attr_dir)) {
6852 dir = DMA_FROM_DEVICE;
6855 dir = DMA_TO_DEVICE;
6861 dir = DMA_BIDIRECTIONAL;
6863 if (hpsa_map_one(h->pdev, c, buff, size, dir))
6869 * Map (physical) PCI mem into (virtual) kernel space
6871 static void __iomem *remap_pci_mem(ulong base, ulong size)
6873 ulong page_base = ((ulong) base) & PAGE_MASK;
6874 ulong page_offs = ((ulong) base) - page_base;
6875 void __iomem *page_remapped = ioremap_nocache(page_base,
6878 return page_remapped ? (page_remapped + page_offs) : NULL;
6881 static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q)
6883 return h->access.command_completed(h, q);
6886 static inline bool interrupt_pending(struct ctlr_info *h)
6888 return h->access.intr_pending(h);
6891 static inline long interrupt_not_for_us(struct ctlr_info *h)
6893 return (h->access.intr_pending(h) == 0) ||
6894 (h->interrupts_enabled == 0);
6897 static inline int bad_tag(struct ctlr_info *h, u32 tag_index,
6900 if (unlikely(tag_index >= h->nr_cmds)) {
6901 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag);
6907 static inline void finish_cmd(struct CommandList *c)
6909 dial_up_lockup_detection_on_fw_flash_complete(c->h, c);
6910 if (likely(c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_SCSI
6911 || c->cmd_type == CMD_IOACCEL2))
6912 complete_scsi_command(c);
6913 else if (c->cmd_type == CMD_IOCTL_PEND || c->cmd_type == IOACCEL2_TMF)
6914 complete(c->waiting);
6917 /* process completion of an indexed ("direct lookup") command */
6918 static inline void process_indexed_cmd(struct ctlr_info *h,
6922 struct CommandList *c;
6924 tag_index = raw_tag >> DIRECT_LOOKUP_SHIFT;
6925 if (!bad_tag(h, tag_index, raw_tag)) {
6926 c = h->cmd_pool + tag_index;
6931 /* Some controllers, like p400, will give us one interrupt
6932 * after a soft reset, even if we turned interrupts off.
6933 * Only need to check for this in the hpsa_xxx_discard_completions
6936 static int ignore_bogus_interrupt(struct ctlr_info *h)
6938 if (likely(!reset_devices))
6941 if (likely(h->interrupts_enabled))
6944 dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled "
6945 "(known firmware bug.) Ignoring.\n");
6951 * Convert &h->q[x] (passed to interrupt handlers) back to h.
6952 * Relies on (h-q[x] == x) being true for x such that
6953 * 0 <= x < MAX_REPLY_QUEUES.
6955 static struct ctlr_info *queue_to_hba(u8 *queue)
6957 return container_of((queue - *queue), struct ctlr_info, q[0]);
6960 static irqreturn_t hpsa_intx_discard_completions(int irq, void *queue)
6962 struct ctlr_info *h = queue_to_hba(queue);
6963 u8 q = *(u8 *) queue;
6966 if (ignore_bogus_interrupt(h))
6969 if (interrupt_not_for_us(h))
6971 h->last_intr_timestamp = get_jiffies_64();
6972 while (interrupt_pending(h)) {
6973 raw_tag = get_next_completion(h, q);
6974 while (raw_tag != FIFO_EMPTY)
6975 raw_tag = next_command(h, q);
6980 static irqreturn_t hpsa_msix_discard_completions(int irq, void *queue)
6982 struct ctlr_info *h = queue_to_hba(queue);
6984 u8 q = *(u8 *) queue;
6986 if (ignore_bogus_interrupt(h))
6989 h->last_intr_timestamp = get_jiffies_64();
6990 raw_tag = get_next_completion(h, q);
6991 while (raw_tag != FIFO_EMPTY)
6992 raw_tag = next_command(h, q);
6996 static irqreturn_t do_hpsa_intr_intx(int irq, void *queue)
6998 struct ctlr_info *h = queue_to_hba((u8 *) queue);
7000 u8 q = *(u8 *) queue;
7002 if (interrupt_not_for_us(h))
7004 h->last_intr_timestamp = get_jiffies_64();
7005 while (interrupt_pending(h)) {
7006 raw_tag = get_next_completion(h, q);
7007 while (raw_tag != FIFO_EMPTY) {
7008 process_indexed_cmd(h, raw_tag);
7009 raw_tag = next_command(h, q);
7015 static irqreturn_t do_hpsa_intr_msi(int irq, void *queue)
7017 struct ctlr_info *h = queue_to_hba(queue);
7019 u8 q = *(u8 *) queue;
7021 h->last_intr_timestamp = get_jiffies_64();
7022 raw_tag = get_next_completion(h, q);
7023 while (raw_tag != FIFO_EMPTY) {
7024 process_indexed_cmd(h, raw_tag);
7025 raw_tag = next_command(h, q);
7030 /* Send a message CDB to the firmware. Careful, this only works
7031 * in simple mode, not performant mode due to the tag lookup.
7032 * We only ever use this immediately after a controller reset.
7034 static int hpsa_message(struct pci_dev *pdev, unsigned char opcode,
7038 struct CommandListHeader CommandHeader;
7039 struct RequestBlock Request;
7040 struct ErrDescriptor ErrorDescriptor;
7042 struct Command *cmd;
7043 static const size_t cmd_sz = sizeof(*cmd) +
7044 sizeof(cmd->ErrorDescriptor);
7048 void __iomem *vaddr;
7051 vaddr = pci_ioremap_bar(pdev, 0);
7055 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
7056 * CCISS commands, so they must be allocated from the lower 4GiB of
7059 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
7065 cmd = dma_alloc_coherent(&pdev->dev, cmd_sz, &paddr64, GFP_KERNEL);
7071 /* This must fit, because of the 32-bit consistent DMA mask. Also,
7072 * although there's no guarantee, we assume that the address is at
7073 * least 4-byte aligned (most likely, it's page-aligned).
7075 paddr32 = cpu_to_le32(paddr64);
7077 cmd->CommandHeader.ReplyQueue = 0;
7078 cmd->CommandHeader.SGList = 0;
7079 cmd->CommandHeader.SGTotal = cpu_to_le16(0);
7080 cmd->CommandHeader.tag = cpu_to_le64(paddr64);
7081 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);
7083 cmd->Request.CDBLen = 16;
7084 cmd->Request.type_attr_dir =
7085 TYPE_ATTR_DIR(TYPE_MSG, ATTR_HEADOFQUEUE, XFER_NONE);
7086 cmd->Request.Timeout = 0; /* Don't time out */
7087 cmd->Request.CDB[0] = opcode;
7088 cmd->Request.CDB[1] = type;
7089 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */
7090 cmd->ErrorDescriptor.Addr =
7091 cpu_to_le64((le32_to_cpu(paddr32) + sizeof(*cmd)));
7092 cmd->ErrorDescriptor.Len = cpu_to_le32(sizeof(struct ErrorInfo));
7094 writel(le32_to_cpu(paddr32), vaddr + SA5_REQUEST_PORT_OFFSET);
7096 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) {
7097 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
7098 if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr64)
7100 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS);
7105 /* we leak the DMA buffer here ... no choice since the controller could
7106 * still complete the command.
7108 if (i == HPSA_MSG_SEND_RETRY_LIMIT) {
7109 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n",
7114 dma_free_coherent(&pdev->dev, cmd_sz, cmd, paddr64);
7116 if (tag & HPSA_ERROR_BIT) {
7117 dev_err(&pdev->dev, "controller message %02x:%02x failed\n",
7122 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n",
7127 #define hpsa_noop(p) hpsa_message(p, 3, 0)
7129 static int hpsa_controller_hard_reset(struct pci_dev *pdev,
7130 void __iomem *vaddr, u32 use_doorbell)
7134 /* For everything after the P600, the PCI power state method
7135 * of resetting the controller doesn't work, so we have this
7136 * other way using the doorbell register.
7138 dev_info(&pdev->dev, "using doorbell to reset controller\n");
7139 writel(use_doorbell, vaddr + SA5_DOORBELL);
7141 /* PMC hardware guys tell us we need a 10 second delay after
7142 * doorbell reset and before any attempt to talk to the board
7143 * at all to ensure that this actually works and doesn't fall
7144 * over in some weird corner cases.
7147 } else { /* Try to do it the PCI power state way */
7149 /* Quoting from the Open CISS Specification: "The Power
7150 * Management Control/Status Register (CSR) controls the power
7151 * state of the device. The normal operating state is D0,
7152 * CSR=00h. The software off state is D3, CSR=03h. To reset
7153 * the controller, place the interface device in D3 then to D0,
7154 * this causes a secondary PCI reset which will reset the
7159 dev_info(&pdev->dev, "using PCI PM to reset controller\n");
7161 /* enter the D3hot power management state */
7162 rc = pci_set_power_state(pdev, PCI_D3hot);
7168 /* enter the D0 power management state */
7169 rc = pci_set_power_state(pdev, PCI_D0);
7174 * The P600 requires a small delay when changing states.
7175 * Otherwise we may think the board did not reset and we bail.
7176 * This for kdump only and is particular to the P600.
7183 static void init_driver_version(char *driver_version, int len)
7185 memset(driver_version, 0, len);
7186 strncpy(driver_version, HPSA " " HPSA_DRIVER_VERSION, len - 1);
7189 static int write_driver_ver_to_cfgtable(struct CfgTable __iomem *cfgtable)
7191 char *driver_version;
7192 int i, size = sizeof(cfgtable->driver_version);
7194 driver_version = kmalloc(size, GFP_KERNEL);
7195 if (!driver_version)
7198 init_driver_version(driver_version, size);
7199 for (i = 0; i < size; i++)
7200 writeb(driver_version[i], &cfgtable->driver_version[i]);
7201 kfree(driver_version);
7205 static void read_driver_ver_from_cfgtable(struct CfgTable __iomem *cfgtable,
7206 unsigned char *driver_ver)
7210 for (i = 0; i < sizeof(cfgtable->driver_version); i++)
7211 driver_ver[i] = readb(&cfgtable->driver_version[i]);
7214 static int controller_reset_failed(struct CfgTable __iomem *cfgtable)
7217 char *driver_ver, *old_driver_ver;
7218 int rc, size = sizeof(cfgtable->driver_version);
7220 old_driver_ver = kmalloc_array(2, size, GFP_KERNEL);
7221 if (!old_driver_ver)
7223 driver_ver = old_driver_ver + size;
7225 /* After a reset, the 32 bytes of "driver version" in the cfgtable
7226 * should have been changed, otherwise we know the reset failed.
7228 init_driver_version(old_driver_ver, size);
7229 read_driver_ver_from_cfgtable(cfgtable, driver_ver);
7230 rc = !memcmp(driver_ver, old_driver_ver, size);
7231 kfree(old_driver_ver);
7234 /* This does a hard reset of the controller using PCI power management
7235 * states or the using the doorbell register.
7237 static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev, u32 board_id)
7241 u64 cfg_base_addr_index;
7242 void __iomem *vaddr;
7243 unsigned long paddr;
7244 u32 misc_fw_support;
7246 struct CfgTable __iomem *cfgtable;
7248 u16 command_register;
7250 /* For controllers as old as the P600, this is very nearly
7253 * pci_save_state(pci_dev);
7254 * pci_set_power_state(pci_dev, PCI_D3hot);
7255 * pci_set_power_state(pci_dev, PCI_D0);
7256 * pci_restore_state(pci_dev);
7258 * For controllers newer than the P600, the pci power state
7259 * method of resetting doesn't work so we have another way
7260 * using the doorbell register.
7263 if (!ctlr_is_resettable(board_id)) {
7264 dev_warn(&pdev->dev, "Controller not resettable\n");
7268 /* if controller is soft- but not hard resettable... */
7269 if (!ctlr_is_hard_resettable(board_id))
7270 return -ENOTSUPP; /* try soft reset later. */
7272 /* Save the PCI command register */
7273 pci_read_config_word(pdev, 4, &command_register);
7274 pci_save_state(pdev);
7276 /* find the first memory BAR, so we can find the cfg table */
7277 rc = hpsa_pci_find_memory_BAR(pdev, &paddr);
7280 vaddr = remap_pci_mem(paddr, 0x250);
7284 /* find cfgtable in order to check if reset via doorbell is supported */
7285 rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr,
7286 &cfg_base_addr_index, &cfg_offset);
7289 cfgtable = remap_pci_mem(pci_resource_start(pdev,
7290 cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable));
7295 rc = write_driver_ver_to_cfgtable(cfgtable);
7297 goto unmap_cfgtable;
7299 /* If reset via doorbell register is supported, use that.
7300 * There are two such methods. Favor the newest method.
7302 misc_fw_support = readl(&cfgtable->misc_fw_support);
7303 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2;
7305 use_doorbell = DOORBELL_CTLR_RESET2;
7307 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET;
7309 dev_warn(&pdev->dev,
7310 "Soft reset not supported. Firmware update is required.\n");
7311 rc = -ENOTSUPP; /* try soft reset */
7312 goto unmap_cfgtable;
7316 rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell);
7318 goto unmap_cfgtable;
7320 pci_restore_state(pdev);
7321 pci_write_config_word(pdev, 4, command_register);
7323 /* Some devices (notably the HP Smart Array 5i Controller)
7324 need a little pause here */
7325 msleep(HPSA_POST_RESET_PAUSE_MSECS);
7327 rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY);
7329 dev_warn(&pdev->dev,
7330 "Failed waiting for board to become ready after hard reset\n");
7331 goto unmap_cfgtable;
7334 rc = controller_reset_failed(vaddr);
7336 goto unmap_cfgtable;
7338 dev_warn(&pdev->dev, "Unable to successfully reset "
7339 "controller. Will try soft reset.\n");
7342 dev_info(&pdev->dev, "board ready after hard reset.\n");
7354 * We cannot read the structure directly, for portability we must use
7356 * This is for debug only.
7358 static void print_cfg_table(struct device *dev, struct CfgTable __iomem *tb)
7364 dev_info(dev, "Controller Configuration information\n");
7365 dev_info(dev, "------------------------------------\n");
7366 for (i = 0; i < 4; i++)
7367 temp_name[i] = readb(&(tb->Signature[i]));
7368 temp_name[4] = '\0';
7369 dev_info(dev, " Signature = %s\n", temp_name);
7370 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence)));
7371 dev_info(dev, " Transport methods supported = 0x%x\n",
7372 readl(&(tb->TransportSupport)));
7373 dev_info(dev, " Transport methods active = 0x%x\n",
7374 readl(&(tb->TransportActive)));
7375 dev_info(dev, " Requested transport Method = 0x%x\n",
7376 readl(&(tb->HostWrite.TransportRequest)));
7377 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n",
7378 readl(&(tb->HostWrite.CoalIntDelay)));
7379 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n",
7380 readl(&(tb->HostWrite.CoalIntCount)));
7381 dev_info(dev, " Max outstanding commands = %d\n",
7382 readl(&(tb->CmdsOutMax)));
7383 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
7384 for (i = 0; i < 16; i++)
7385 temp_name[i] = readb(&(tb->ServerName[i]));
7386 temp_name[16] = '\0';
7387 dev_info(dev, " Server Name = %s\n", temp_name);
7388 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n",
7389 readl(&(tb->HeartBeat)));
7390 #endif /* HPSA_DEBUG */
7393 static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
7395 int i, offset, mem_type, bar_type;
7397 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
7400 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
7401 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
7402 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
7405 mem_type = pci_resource_flags(pdev, i) &
7406 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
7408 case PCI_BASE_ADDRESS_MEM_TYPE_32:
7409 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
7410 offset += 4; /* 32 bit */
7412 case PCI_BASE_ADDRESS_MEM_TYPE_64:
7415 default: /* reserved in PCI 2.2 */
7416 dev_warn(&pdev->dev,
7417 "base address is invalid\n");
7422 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
7428 static void hpsa_disable_interrupt_mode(struct ctlr_info *h)
7430 pci_free_irq_vectors(h->pdev);
7431 h->msix_vectors = 0;
7434 static void hpsa_setup_reply_map(struct ctlr_info *h)
7436 const struct cpumask *mask;
7437 unsigned int queue, cpu;
7439 for (queue = 0; queue < h->msix_vectors; queue++) {
7440 mask = pci_irq_get_affinity(h->pdev, queue);
7444 for_each_cpu(cpu, mask)
7445 h->reply_map[cpu] = queue;
7450 for_each_possible_cpu(cpu)
7451 h->reply_map[cpu] = 0;
7454 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
7455 * controllers that are capable. If not, we use legacy INTx mode.
7457 static int hpsa_interrupt_mode(struct ctlr_info *h)
7459 unsigned int flags = PCI_IRQ_LEGACY;
7462 /* Some boards advertise MSI but don't really support it */
7463 switch (h->board_id) {
7470 ret = pci_alloc_irq_vectors(h->pdev, 1, MAX_REPLY_QUEUES,
7471 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
7473 h->msix_vectors = ret;
7477 flags |= PCI_IRQ_MSI;
7481 ret = pci_alloc_irq_vectors(h->pdev, 1, 1, flags);
7487 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id,
7491 u32 subsystem_vendor_id, subsystem_device_id;
7493 subsystem_vendor_id = pdev->subsystem_vendor;
7494 subsystem_device_id = pdev->subsystem_device;
7495 *board_id = ((subsystem_device_id << 16) & 0xffff0000) |
7496 subsystem_vendor_id;
7499 *legacy_board = false;
7500 for (i = 0; i < ARRAY_SIZE(products); i++)
7501 if (*board_id == products[i].board_id) {
7502 if (products[i].access != &SA5A_access &&
7503 products[i].access != &SA5B_access)
7505 dev_warn(&pdev->dev,
7506 "legacy board ID: 0x%08x\n",
7509 *legacy_board = true;
7513 dev_warn(&pdev->dev, "unrecognized board ID: 0x%08x\n", *board_id);
7515 *legacy_board = true;
7516 return ARRAY_SIZE(products) - 1; /* generic unknown smart array */
7519 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
7520 unsigned long *memory_bar)
7524 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++)
7525 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
7526 /* addressing mode bits already removed */
7527 *memory_bar = pci_resource_start(pdev, i);
7528 dev_dbg(&pdev->dev, "memory BAR = %lx\n",
7532 dev_warn(&pdev->dev, "no memory BAR found\n");
7536 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
7542 iterations = HPSA_BOARD_READY_ITERATIONS;
7544 iterations = HPSA_BOARD_NOT_READY_ITERATIONS;
7546 for (i = 0; i < iterations; i++) {
7547 scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET);
7548 if (wait_for_ready) {
7549 if (scratchpad == HPSA_FIRMWARE_READY)
7552 if (scratchpad != HPSA_FIRMWARE_READY)
7555 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
7557 dev_warn(&pdev->dev, "board not ready, timed out.\n");
7561 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
7562 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
7565 *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET);
7566 *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET);
7567 *cfg_base_addr &= (u32) 0x0000ffff;
7568 *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr);
7569 if (*cfg_base_addr_index == -1) {
7570 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n");
7576 static void hpsa_free_cfgtables(struct ctlr_info *h)
7578 if (h->transtable) {
7579 iounmap(h->transtable);
7580 h->transtable = NULL;
7583 iounmap(h->cfgtable);
7588 /* Find and map CISS config table and transfer table
7589 + * several items must be unmapped (freed) later
7591 static int hpsa_find_cfgtables(struct ctlr_info *h)
7595 u64 cfg_base_addr_index;
7599 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
7600 &cfg_base_addr_index, &cfg_offset);
7603 h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
7604 cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable));
7606 dev_err(&h->pdev->dev, "Failed mapping cfgtable\n");
7609 rc = write_driver_ver_to_cfgtable(h->cfgtable);
7612 /* Find performant mode table. */
7613 trans_offset = readl(&h->cfgtable->TransMethodOffset);
7614 h->transtable = remap_pci_mem(pci_resource_start(h->pdev,
7615 cfg_base_addr_index)+cfg_offset+trans_offset,
7616 sizeof(*h->transtable));
7617 if (!h->transtable) {
7618 dev_err(&h->pdev->dev, "Failed mapping transfer table\n");
7619 hpsa_free_cfgtables(h);
7625 static void hpsa_get_max_perf_mode_cmds(struct ctlr_info *h)
7627 #define MIN_MAX_COMMANDS 16
7628 BUILD_BUG_ON(MIN_MAX_COMMANDS <= HPSA_NRESERVED_CMDS);
7630 h->max_commands = readl(&h->cfgtable->MaxPerformantModeCommands);
7632 /* Limit commands in memory limited kdump scenario. */
7633 if (reset_devices && h->max_commands > 32)
7634 h->max_commands = 32;
7636 if (h->max_commands < MIN_MAX_COMMANDS) {
7637 dev_warn(&h->pdev->dev,
7638 "Controller reports max supported commands of %d Using %d instead. Ensure that firmware is up to date.\n",
7641 h->max_commands = MIN_MAX_COMMANDS;
7645 /* If the controller reports that the total max sg entries is greater than 512,
7646 * then we know that chained SG blocks work. (Original smart arrays did not
7647 * support chained SG blocks and would return zero for max sg entries.)
7649 static int hpsa_supports_chained_sg_blocks(struct ctlr_info *h)
7651 return h->maxsgentries > 512;
7654 /* Interrogate the hardware for some limits:
7655 * max commands, max SG elements without chaining, and with chaining,
7656 * SG chain block size, etc.
7658 static void hpsa_find_board_params(struct ctlr_info *h)
7660 hpsa_get_max_perf_mode_cmds(h);
7661 h->nr_cmds = h->max_commands;
7662 h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements));
7663 h->fw_support = readl(&(h->cfgtable->misc_fw_support));
7664 if (hpsa_supports_chained_sg_blocks(h)) {
7665 /* Limit in-command s/g elements to 32 save dma'able memory. */
7666 h->max_cmd_sg_entries = 32;
7667 h->chainsize = h->maxsgentries - h->max_cmd_sg_entries;
7668 h->maxsgentries--; /* save one for chain pointer */
7671 * Original smart arrays supported at most 31 s/g entries
7672 * embedded inline in the command (trying to use more
7673 * would lock up the controller)
7675 h->max_cmd_sg_entries = 31;
7676 h->maxsgentries = 31; /* default to traditional values */
7680 /* Find out what task management functions are supported and cache */
7681 h->TMFSupportFlags = readl(&(h->cfgtable->TMFSupportFlags));
7682 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags))
7683 dev_warn(&h->pdev->dev, "Physical aborts not supported\n");
7684 if (!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
7685 dev_warn(&h->pdev->dev, "Logical aborts not supported\n");
7686 if (!(HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags))
7687 dev_warn(&h->pdev->dev, "HP SSD Smart Path aborts not supported\n");
7690 static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)
7692 if (!check_signature(h->cfgtable->Signature, "CISS", 4)) {
7693 dev_err(&h->pdev->dev, "not a valid CISS config table\n");
7699 static inline void hpsa_set_driver_support_bits(struct ctlr_info *h)
7703 driver_support = readl(&(h->cfgtable->driver_support));
7704 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
7706 driver_support |= ENABLE_SCSI_PREFETCH;
7708 driver_support |= ENABLE_UNIT_ATTN;
7709 writel(driver_support, &(h->cfgtable->driver_support));
7712 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
7713 * in a prefetch beyond physical memory.
7715 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h)
7719 if (h->board_id != 0x3225103C)
7721 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
7722 dma_prefetch |= 0x8000;
7723 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
7726 static int hpsa_wait_for_clear_event_notify_ack(struct ctlr_info *h)
7730 unsigned long flags;
7731 /* wait until the clear_event_notify bit 6 is cleared by controller. */
7732 for (i = 0; i < MAX_CLEAR_EVENT_WAIT; i++) {
7733 spin_lock_irqsave(&h->lock, flags);
7734 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7735 spin_unlock_irqrestore(&h->lock, flags);
7736 if (!(doorbell_value & DOORBELL_CLEAR_EVENTS))
7738 /* delay and try again */
7739 msleep(CLEAR_EVENT_WAIT_INTERVAL);
7746 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h)
7750 unsigned long flags;
7752 /* under certain very rare conditions, this can take awhile.
7753 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
7754 * as we enter this code.)
7756 for (i = 0; i < MAX_MODE_CHANGE_WAIT; i++) {
7757 if (h->remove_in_progress)
7759 spin_lock_irqsave(&h->lock, flags);
7760 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7761 spin_unlock_irqrestore(&h->lock, flags);
7762 if (!(doorbell_value & CFGTBL_ChangeReq))
7764 /* delay and try again */
7765 msleep(MODE_CHANGE_WAIT_INTERVAL);
7772 /* return -ENODEV or other reason on error, 0 on success */
7773 static int hpsa_enter_simple_mode(struct ctlr_info *h)
7777 trans_support = readl(&(h->cfgtable->TransportSupport));
7778 if (!(trans_support & SIMPLE_MODE))
7781 h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
7783 /* Update the field, and then ring the doorbell */
7784 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
7785 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
7786 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
7787 if (hpsa_wait_for_mode_change_ack(h))
7789 print_cfg_table(&h->pdev->dev, h->cfgtable);
7790 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
7792 h->transMethod = CFGTBL_Trans_Simple;
7795 dev_err(&h->pdev->dev, "failed to enter simple mode\n");
7799 /* free items allocated or mapped by hpsa_pci_init */
7800 static void hpsa_free_pci_init(struct ctlr_info *h)
7802 hpsa_free_cfgtables(h); /* pci_init 4 */
7803 iounmap(h->vaddr); /* pci_init 3 */
7805 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
7807 * call pci_disable_device before pci_release_regions per
7808 * Documentation/driver-api/pci/pci.rst
7810 pci_disable_device(h->pdev); /* pci_init 1 */
7811 pci_release_regions(h->pdev); /* pci_init 2 */
7814 /* several items must be freed later */
7815 static int hpsa_pci_init(struct ctlr_info *h)
7817 int prod_index, err;
7820 prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id, &legacy_board);
7823 h->product_name = products[prod_index].product_name;
7824 h->access = *(products[prod_index].access);
7825 h->legacy_board = legacy_board;
7826 pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S |
7827 PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
7829 err = pci_enable_device(h->pdev);
7831 dev_err(&h->pdev->dev, "failed to enable PCI device\n");
7832 pci_disable_device(h->pdev);
7836 err = pci_request_regions(h->pdev, HPSA);
7838 dev_err(&h->pdev->dev,
7839 "failed to obtain PCI resources\n");
7840 pci_disable_device(h->pdev);
7844 pci_set_master(h->pdev);
7846 err = hpsa_interrupt_mode(h);
7850 /* setup mapping between CPU and reply queue */
7851 hpsa_setup_reply_map(h);
7853 err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr);
7855 goto clean2; /* intmode+region, pci */
7856 h->vaddr = remap_pci_mem(h->paddr, 0x250);
7858 dev_err(&h->pdev->dev, "failed to remap PCI mem\n");
7860 goto clean2; /* intmode+region, pci */
7862 err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
7864 goto clean3; /* vaddr, intmode+region, pci */
7865 err = hpsa_find_cfgtables(h);
7867 goto clean3; /* vaddr, intmode+region, pci */
7868 hpsa_find_board_params(h);
7870 if (!hpsa_CISS_signature_present(h)) {
7872 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
7874 hpsa_set_driver_support_bits(h);
7875 hpsa_p600_dma_prefetch_quirk(h);
7876 err = hpsa_enter_simple_mode(h);
7878 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
7881 clean4: /* cfgtables, vaddr, intmode+region, pci */
7882 hpsa_free_cfgtables(h);
7883 clean3: /* vaddr, intmode+region, pci */
7886 clean2: /* intmode+region, pci */
7887 hpsa_disable_interrupt_mode(h);
7890 * call pci_disable_device before pci_release_regions per
7891 * Documentation/driver-api/pci/pci.rst
7893 pci_disable_device(h->pdev);
7894 pci_release_regions(h->pdev);
7898 static void hpsa_hba_inquiry(struct ctlr_info *h)
7902 #define HBA_INQUIRY_BYTE_COUNT 64
7903 h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL);
7904 if (!h->hba_inquiry_data)
7906 rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0,
7907 h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT);
7909 kfree(h->hba_inquiry_data);
7910 h->hba_inquiry_data = NULL;
7914 static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id)
7917 void __iomem *vaddr;
7922 /* kdump kernel is loading, we don't know in which state is
7923 * the pci interface. The dev->enable_cnt is equal zero
7924 * so we call enable+disable, wait a while and switch it on.
7926 rc = pci_enable_device(pdev);
7928 dev_warn(&pdev->dev, "Failed to enable PCI device\n");
7931 pci_disable_device(pdev);
7932 msleep(260); /* a randomly chosen number */
7933 rc = pci_enable_device(pdev);
7935 dev_warn(&pdev->dev, "failed to enable device.\n");
7939 pci_set_master(pdev);
7941 vaddr = pci_ioremap_bar(pdev, 0);
7942 if (vaddr == NULL) {
7946 writel(SA5_INTR_OFF, vaddr + SA5_REPLY_INTR_MASK_OFFSET);
7949 /* Reset the controller with a PCI power-cycle or via doorbell */
7950 rc = hpsa_kdump_hard_reset_controller(pdev, board_id);
7952 /* -ENOTSUPP here means we cannot reset the controller
7953 * but it's already (and still) up and running in
7954 * "performant mode". Or, it might be 640x, which can't reset
7955 * due to concerns about shared bbwc between 6402/6404 pair.
7960 /* Now try to get the controller to respond to a no-op */
7961 dev_info(&pdev->dev, "Waiting for controller to respond to no-op\n");
7962 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) {
7963 if (hpsa_noop(pdev) == 0)
7966 dev_warn(&pdev->dev, "no-op failed%s\n",
7967 (i < 11 ? "; re-trying" : ""));
7972 pci_disable_device(pdev);
7976 static void hpsa_free_cmd_pool(struct ctlr_info *h)
7978 kfree(h->cmd_pool_bits);
7979 h->cmd_pool_bits = NULL;
7981 dma_free_coherent(&h->pdev->dev,
7982 h->nr_cmds * sizeof(struct CommandList),
7984 h->cmd_pool_dhandle);
7986 h->cmd_pool_dhandle = 0;
7988 if (h->errinfo_pool) {
7989 dma_free_coherent(&h->pdev->dev,
7990 h->nr_cmds * sizeof(struct ErrorInfo),
7992 h->errinfo_pool_dhandle);
7993 h->errinfo_pool = NULL;
7994 h->errinfo_pool_dhandle = 0;
7998 static int hpsa_alloc_cmd_pool(struct ctlr_info *h)
8000 h->cmd_pool_bits = kcalloc(DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG),
8001 sizeof(unsigned long),
8003 h->cmd_pool = dma_alloc_coherent(&h->pdev->dev,
8004 h->nr_cmds * sizeof(*h->cmd_pool),
8005 &h->cmd_pool_dhandle, GFP_KERNEL);
8006 h->errinfo_pool = dma_alloc_coherent(&h->pdev->dev,
8007 h->nr_cmds * sizeof(*h->errinfo_pool),
8008 &h->errinfo_pool_dhandle, GFP_KERNEL);
8009 if ((h->cmd_pool_bits == NULL)
8010 || (h->cmd_pool == NULL)
8011 || (h->errinfo_pool == NULL)) {
8012 dev_err(&h->pdev->dev, "out of memory in %s", __func__);
8015 hpsa_preinitialize_commands(h);
8018 hpsa_free_cmd_pool(h);
8022 /* clear affinity hints and free MSI-X, MSI, or legacy INTx vectors */
8023 static void hpsa_free_irqs(struct ctlr_info *h)
8028 if (hpsa_simple_mode)
8029 irq_vector = h->intr_mode;
8031 if (!h->msix_vectors || h->intr_mode != PERF_MODE_INT) {
8032 /* Single reply queue, only one irq to free */
8033 free_irq(pci_irq_vector(h->pdev, irq_vector),
8034 &h->q[h->intr_mode]);
8035 h->q[h->intr_mode] = 0;
8039 for (i = 0; i < h->msix_vectors; i++) {
8040 free_irq(pci_irq_vector(h->pdev, i), &h->q[i]);
8043 for (; i < MAX_REPLY_QUEUES; i++)
8047 /* returns 0 on success; cleans up and returns -Enn on error */
8048 static int hpsa_request_irqs(struct ctlr_info *h,
8049 irqreturn_t (*msixhandler)(int, void *),
8050 irqreturn_t (*intxhandler)(int, void *))
8055 if (hpsa_simple_mode)
8056 irq_vector = h->intr_mode;
8059 * initialize h->q[x] = x so that interrupt handlers know which
8062 for (i = 0; i < MAX_REPLY_QUEUES; i++)
8065 if (h->intr_mode == PERF_MODE_INT && h->msix_vectors > 0) {
8066 /* If performant mode and MSI-X, use multiple reply queues */
8067 for (i = 0; i < h->msix_vectors; i++) {
8068 sprintf(h->intrname[i], "%s-msix%d", h->devname, i);
8069 rc = request_irq(pci_irq_vector(h->pdev, i), msixhandler,
8075 dev_err(&h->pdev->dev,
8076 "failed to get irq %d for %s\n",
8077 pci_irq_vector(h->pdev, i), h->devname);
8078 for (j = 0; j < i; j++) {
8079 free_irq(pci_irq_vector(h->pdev, j), &h->q[j]);
8082 for (; j < MAX_REPLY_QUEUES; j++)
8088 /* Use single reply pool */
8089 if (h->msix_vectors > 0 || h->pdev->msi_enabled) {
8090 sprintf(h->intrname[0], "%s-msi%s", h->devname,
8091 h->msix_vectors ? "x" : "");
8092 rc = request_irq(pci_irq_vector(h->pdev, irq_vector),
8095 &h->q[h->intr_mode]);
8097 sprintf(h->intrname[h->intr_mode],
8098 "%s-intx", h->devname);
8099 rc = request_irq(pci_irq_vector(h->pdev, irq_vector),
8100 intxhandler, IRQF_SHARED,
8102 &h->q[h->intr_mode]);
8106 dev_err(&h->pdev->dev, "failed to get irq %d for %s\n",
8107 pci_irq_vector(h->pdev, irq_vector), h->devname);
8114 static int hpsa_kdump_soft_reset(struct ctlr_info *h)
8117 hpsa_send_host_reset(h, HPSA_RESET_TYPE_CONTROLLER);
8119 dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n");
8120 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY);
8122 dev_warn(&h->pdev->dev, "Soft reset had no effect.\n");
8126 dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n");
8127 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
8129 dev_warn(&h->pdev->dev, "Board failed to become ready "
8130 "after soft reset.\n");
8137 static void hpsa_free_reply_queues(struct ctlr_info *h)
8141 for (i = 0; i < h->nreply_queues; i++) {
8142 if (!h->reply_queue[i].head)
8144 dma_free_coherent(&h->pdev->dev,
8145 h->reply_queue_size,
8146 h->reply_queue[i].head,
8147 h->reply_queue[i].busaddr);
8148 h->reply_queue[i].head = NULL;
8149 h->reply_queue[i].busaddr = 0;
8151 h->reply_queue_size = 0;
8154 static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h)
8156 hpsa_free_performant_mode(h); /* init_one 7 */
8157 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
8158 hpsa_free_cmd_pool(h); /* init_one 5 */
8159 hpsa_free_irqs(h); /* init_one 4 */
8160 scsi_host_put(h->scsi_host); /* init_one 3 */
8161 h->scsi_host = NULL; /* init_one 3 */
8162 hpsa_free_pci_init(h); /* init_one 2_5 */
8163 free_percpu(h->lockup_detected); /* init_one 2 */
8164 h->lockup_detected = NULL; /* init_one 2 */
8165 if (h->resubmit_wq) {
8166 destroy_workqueue(h->resubmit_wq); /* init_one 1 */
8167 h->resubmit_wq = NULL;
8169 if (h->rescan_ctlr_wq) {
8170 destroy_workqueue(h->rescan_ctlr_wq);
8171 h->rescan_ctlr_wq = NULL;
8173 if (h->monitor_ctlr_wq) {
8174 destroy_workqueue(h->monitor_ctlr_wq);
8175 h->monitor_ctlr_wq = NULL;
8178 kfree(h); /* init_one 1 */
8181 /* Called when controller lockup detected. */
8182 static void fail_all_outstanding_cmds(struct ctlr_info *h)
8185 struct CommandList *c;
8188 flush_workqueue(h->resubmit_wq); /* ensure all cmds are fully built */
8189 for (i = 0; i < h->nr_cmds; i++) {
8190 c = h->cmd_pool + i;
8191 refcount = atomic_inc_return(&c->refcount);
8193 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
8195 atomic_dec(&h->commands_outstanding);
8200 dev_warn(&h->pdev->dev,
8201 "failed %d commands in fail_all\n", failcount);
8204 static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value)
8208 for_each_online_cpu(cpu) {
8209 u32 *lockup_detected;
8210 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
8211 *lockup_detected = value;
8213 wmb(); /* be sure the per-cpu variables are out to memory */
8216 static void controller_lockup_detected(struct ctlr_info *h)
8218 unsigned long flags;
8219 u32 lockup_detected;
8221 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8222 spin_lock_irqsave(&h->lock, flags);
8223 lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
8224 if (!lockup_detected) {
8225 /* no heartbeat, but controller gave us a zero. */
8226 dev_warn(&h->pdev->dev,
8227 "lockup detected after %d but scratchpad register is zero\n",
8228 h->heartbeat_sample_interval / HZ);
8229 lockup_detected = 0xffffffff;
8231 set_lockup_detected_for_all_cpus(h, lockup_detected);
8232 spin_unlock_irqrestore(&h->lock, flags);
8233 dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x after %d\n",
8234 lockup_detected, h->heartbeat_sample_interval / HZ);
8235 if (lockup_detected == 0xffff0000) {
8236 dev_warn(&h->pdev->dev, "Telling controller to do a CHKPT\n");
8237 writel(DOORBELL_GENERATE_CHKPT, h->vaddr + SA5_DOORBELL);
8239 pci_disable_device(h->pdev);
8240 fail_all_outstanding_cmds(h);
8243 static int detect_controller_lockup(struct ctlr_info *h)
8247 unsigned long flags;
8249 now = get_jiffies_64();
8250 /* If we've received an interrupt recently, we're ok. */
8251 if (time_after64(h->last_intr_timestamp +
8252 (h->heartbeat_sample_interval), now))
8256 * If we've already checked the heartbeat recently, we're ok.
8257 * This could happen if someone sends us a signal. We
8258 * otherwise don't care about signals in this thread.
8260 if (time_after64(h->last_heartbeat_timestamp +
8261 (h->heartbeat_sample_interval), now))
8264 /* If heartbeat has not changed since we last looked, we're not ok. */
8265 spin_lock_irqsave(&h->lock, flags);
8266 heartbeat = readl(&h->cfgtable->HeartBeat);
8267 spin_unlock_irqrestore(&h->lock, flags);
8268 if (h->last_heartbeat == heartbeat) {
8269 controller_lockup_detected(h);
8274 h->last_heartbeat = heartbeat;
8275 h->last_heartbeat_timestamp = now;
8280 * Set ioaccel status for all ioaccel volumes.
8282 * Called from monitor controller worker (hpsa_event_monitor_worker)
8284 * A Volume (or Volumes that comprise an Array set may be undergoing a
8285 * transformation, so we will be turning off ioaccel for all volumes that
8286 * make up the Array.
8288 static void hpsa_set_ioaccel_status(struct ctlr_info *h)
8294 struct hpsa_scsi_dev_t *device;
8299 buf = kmalloc(64, GFP_KERNEL);
8304 * Run through current device list used during I/O requests.
8306 for (i = 0; i < h->ndevices; i++) {
8311 if (!hpsa_vpd_page_supported(h, device->scsi3addr,
8312 HPSA_VPD_LV_IOACCEL_STATUS))
8317 rc = hpsa_scsi_do_inquiry(h, device->scsi3addr,
8318 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS,
8323 ioaccel_status = buf[IOACCEL_STATUS_BYTE];
8324 device->offload_config =
8325 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT);
8326 if (device->offload_config)
8327 device->offload_to_be_enabled =
8328 !!(ioaccel_status & OFFLOAD_ENABLED_BIT);
8331 * Immediately turn off ioaccel for any volume the
8332 * controller tells us to. Some of the reasons could be:
8333 * transformation - change to the LVs of an Array.
8334 * degraded volume - component failure
8336 * If ioaccel is to be re-enabled, re-enable later during the
8337 * scan operation so the driver can get a fresh raidmap
8338 * before turning ioaccel back on.
8341 if (!device->offload_to_be_enabled)
8342 device->offload_enabled = 0;
8348 static void hpsa_ack_ctlr_events(struct ctlr_info *h)
8352 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
8355 /* Ask the controller to clear the events we're handling. */
8356 if ((h->transMethod & (CFGTBL_Trans_io_accel1
8357 | CFGTBL_Trans_io_accel2)) &&
8358 (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE ||
8359 h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)) {
8361 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE)
8362 event_type = "state change";
8363 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)
8364 event_type = "configuration change";
8365 /* Stop sending new RAID offload reqs via the IO accelerator */
8366 scsi_block_requests(h->scsi_host);
8367 hpsa_set_ioaccel_status(h);
8368 hpsa_drain_accel_commands(h);
8369 /* Set 'accelerator path config change' bit */
8370 dev_warn(&h->pdev->dev,
8371 "Acknowledging event: 0x%08x (HP SSD Smart Path %s)\n",
8372 h->events, event_type);
8373 writel(h->events, &(h->cfgtable->clear_event_notify));
8374 /* Set the "clear event notify field update" bit 6 */
8375 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
8376 /* Wait until ctlr clears 'clear event notify field', bit 6 */
8377 hpsa_wait_for_clear_event_notify_ack(h);
8378 scsi_unblock_requests(h->scsi_host);
8380 /* Acknowledge controller notification events. */
8381 writel(h->events, &(h->cfgtable->clear_event_notify));
8382 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
8383 hpsa_wait_for_clear_event_notify_ack(h);
8388 /* Check a register on the controller to see if there are configuration
8389 * changes (added/changed/removed logical drives, etc.) which mean that
8390 * we should rescan the controller for devices.
8391 * Also check flag for driver-initiated rescan.
8393 static int hpsa_ctlr_needs_rescan(struct ctlr_info *h)
8395 if (h->drv_req_rescan) {
8396 h->drv_req_rescan = 0;
8400 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
8403 h->events = readl(&(h->cfgtable->event_notify));
8404 return h->events & RESCAN_REQUIRED_EVENT_BITS;
8408 * Check if any of the offline devices have become ready
8410 static int hpsa_offline_devices_ready(struct ctlr_info *h)
8412 unsigned long flags;
8413 struct offline_device_entry *d;
8414 struct list_head *this, *tmp;
8416 spin_lock_irqsave(&h->offline_device_lock, flags);
8417 list_for_each_safe(this, tmp, &h->offline_device_list) {
8418 d = list_entry(this, struct offline_device_entry,
8420 spin_unlock_irqrestore(&h->offline_device_lock, flags);
8421 if (!hpsa_volume_offline(h, d->scsi3addr)) {
8422 spin_lock_irqsave(&h->offline_device_lock, flags);
8423 list_del(&d->offline_list);
8424 spin_unlock_irqrestore(&h->offline_device_lock, flags);
8427 spin_lock_irqsave(&h->offline_device_lock, flags);
8429 spin_unlock_irqrestore(&h->offline_device_lock, flags);
8433 static int hpsa_luns_changed(struct ctlr_info *h)
8435 int rc = 1; /* assume there are changes */
8436 struct ReportLUNdata *logdev = NULL;
8438 /* if we can't find out if lun data has changed,
8439 * assume that it has.
8442 if (!h->lastlogicals)
8445 logdev = kzalloc(sizeof(*logdev), GFP_KERNEL);
8449 if (hpsa_scsi_do_report_luns(h, 1, logdev, sizeof(*logdev), 0)) {
8450 dev_warn(&h->pdev->dev,
8451 "report luns failed, can't track lun changes.\n");
8454 if (memcmp(logdev, h->lastlogicals, sizeof(*logdev))) {
8455 dev_info(&h->pdev->dev,
8456 "Lun changes detected.\n");
8457 memcpy(h->lastlogicals, logdev, sizeof(*logdev));
8460 rc = 0; /* no changes detected. */
8466 static void hpsa_perform_rescan(struct ctlr_info *h)
8468 struct Scsi_Host *sh = NULL;
8469 unsigned long flags;
8472 * Do the scan after the reset
8474 spin_lock_irqsave(&h->reset_lock, flags);
8475 if (h->reset_in_progress) {
8476 h->drv_req_rescan = 1;
8477 spin_unlock_irqrestore(&h->reset_lock, flags);
8480 spin_unlock_irqrestore(&h->reset_lock, flags);
8482 sh = scsi_host_get(h->scsi_host);
8484 hpsa_scan_start(sh);
8486 h->drv_req_rescan = 0;
8491 * watch for controller events
8493 static void hpsa_event_monitor_worker(struct work_struct *work)
8495 struct ctlr_info *h = container_of(to_delayed_work(work),
8496 struct ctlr_info, event_monitor_work);
8497 unsigned long flags;
8499 spin_lock_irqsave(&h->lock, flags);
8500 if (h->remove_in_progress) {
8501 spin_unlock_irqrestore(&h->lock, flags);
8504 spin_unlock_irqrestore(&h->lock, flags);
8506 if (hpsa_ctlr_needs_rescan(h)) {
8507 hpsa_ack_ctlr_events(h);
8508 hpsa_perform_rescan(h);
8511 spin_lock_irqsave(&h->lock, flags);
8512 if (!h->remove_in_progress)
8513 queue_delayed_work(h->monitor_ctlr_wq, &h->event_monitor_work,
8514 HPSA_EVENT_MONITOR_INTERVAL);
8515 spin_unlock_irqrestore(&h->lock, flags);
8518 static void hpsa_rescan_ctlr_worker(struct work_struct *work)
8520 unsigned long flags;
8521 struct ctlr_info *h = container_of(to_delayed_work(work),
8522 struct ctlr_info, rescan_ctlr_work);
8524 spin_lock_irqsave(&h->lock, flags);
8525 if (h->remove_in_progress) {
8526 spin_unlock_irqrestore(&h->lock, flags);
8529 spin_unlock_irqrestore(&h->lock, flags);
8531 if (h->drv_req_rescan || hpsa_offline_devices_ready(h)) {
8532 hpsa_perform_rescan(h);
8533 } else if (h->discovery_polling) {
8534 if (hpsa_luns_changed(h)) {
8535 dev_info(&h->pdev->dev,
8536 "driver discovery polling rescan.\n");
8537 hpsa_perform_rescan(h);
8540 spin_lock_irqsave(&h->lock, flags);
8541 if (!h->remove_in_progress)
8542 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
8543 h->heartbeat_sample_interval);
8544 spin_unlock_irqrestore(&h->lock, flags);
8547 static void hpsa_monitor_ctlr_worker(struct work_struct *work)
8549 unsigned long flags;
8550 struct ctlr_info *h = container_of(to_delayed_work(work),
8551 struct ctlr_info, monitor_ctlr_work);
8553 detect_controller_lockup(h);
8554 if (lockup_detected(h))
8557 spin_lock_irqsave(&h->lock, flags);
8558 if (!h->remove_in_progress)
8559 queue_delayed_work(h->monitor_ctlr_wq, &h->monitor_ctlr_work,
8560 h->heartbeat_sample_interval);
8561 spin_unlock_irqrestore(&h->lock, flags);
8564 static struct workqueue_struct *hpsa_create_controller_wq(struct ctlr_info *h,
8567 struct workqueue_struct *wq = NULL;
8569 wq = alloc_ordered_workqueue("%s_%d_hpsa", 0, name, h->ctlr);
8571 dev_err(&h->pdev->dev, "failed to create %s workqueue\n", name);
8576 static void hpda_free_ctlr_info(struct ctlr_info *h)
8578 kfree(h->reply_map);
8582 static struct ctlr_info *hpda_alloc_ctlr_info(void)
8584 struct ctlr_info *h;
8586 h = kzalloc(sizeof(*h), GFP_KERNEL);
8590 h->reply_map = kcalloc(nr_cpu_ids, sizeof(*h->reply_map), GFP_KERNEL);
8591 if (!h->reply_map) {
8598 static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
8601 struct ctlr_info *h;
8602 int try_soft_reset = 0;
8603 unsigned long flags;
8606 if (number_of_controllers == 0)
8607 printk(KERN_INFO DRIVER_NAME "\n");
8609 rc = hpsa_lookup_board_id(pdev, &board_id, NULL);
8611 dev_warn(&pdev->dev, "Board ID not found\n");
8615 rc = hpsa_init_reset_devices(pdev, board_id);
8617 if (rc != -ENOTSUPP)
8619 /* If the reset fails in a particular way (it has no way to do
8620 * a proper hard reset, so returns -ENOTSUPP) we can try to do
8621 * a soft reset once we get the controller configured up to the
8622 * point that it can accept a command.
8628 reinit_after_soft_reset:
8630 /* Command structures must be aligned on a 32-byte boundary because
8631 * the 5 lower bits of the address are used by the hardware. and by
8632 * the driver. See comments in hpsa.h for more info.
8634 BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT);
8635 h = hpda_alloc_ctlr_info();
8637 dev_err(&pdev->dev, "Failed to allocate controller head\n");
8643 h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT;
8644 INIT_LIST_HEAD(&h->offline_device_list);
8645 spin_lock_init(&h->lock);
8646 spin_lock_init(&h->offline_device_lock);
8647 spin_lock_init(&h->scan_lock);
8648 spin_lock_init(&h->reset_lock);
8649 atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS);
8651 /* Allocate and clear per-cpu variable lockup_detected */
8652 h->lockup_detected = alloc_percpu(u32);
8653 if (!h->lockup_detected) {
8654 dev_err(&h->pdev->dev, "Failed to allocate lockup detector\n");
8656 goto clean1; /* aer/h */
8658 set_lockup_detected_for_all_cpus(h, 0);
8660 rc = hpsa_pci_init(h);
8662 goto clean2; /* lu, aer/h */
8664 /* relies on h-> settings made by hpsa_pci_init, including
8665 * interrupt_mode h->intr */
8666 rc = hpsa_scsi_host_alloc(h);
8668 goto clean2_5; /* pci, lu, aer/h */
8670 sprintf(h->devname, HPSA "%d", h->scsi_host->host_no);
8671 h->ctlr = number_of_controllers;
8672 number_of_controllers++;
8674 /* configure PCI DMA stuff */
8675 rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
8679 rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
8683 dev_err(&pdev->dev, "no suitable DMA available\n");
8684 goto clean3; /* shost, pci, lu, aer/h */
8688 /* make sure the board interrupts are off */
8689 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8691 rc = hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx);
8693 goto clean3; /* shost, pci, lu, aer/h */
8694 rc = hpsa_alloc_cmd_pool(h);
8696 goto clean4; /* irq, shost, pci, lu, aer/h */
8697 rc = hpsa_alloc_sg_chain_blocks(h);
8699 goto clean5; /* cmd, irq, shost, pci, lu, aer/h */
8700 init_waitqueue_head(&h->scan_wait_queue);
8701 init_waitqueue_head(&h->event_sync_wait_queue);
8702 mutex_init(&h->reset_mutex);
8703 h->scan_finished = 1; /* no scan currently in progress */
8704 h->scan_waiting = 0;
8706 pci_set_drvdata(pdev, h);
8709 spin_lock_init(&h->devlock);
8710 rc = hpsa_put_ctlr_into_performant_mode(h);
8712 goto clean6; /* sg, cmd, irq, shost, pci, lu, aer/h */
8714 /* create the resubmit workqueue */
8715 h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan");
8716 if (!h->rescan_ctlr_wq) {
8721 h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit");
8722 if (!h->resubmit_wq) {
8724 goto clean7; /* aer/h */
8727 h->monitor_ctlr_wq = hpsa_create_controller_wq(h, "monitor");
8728 if (!h->monitor_ctlr_wq) {
8734 * At this point, the controller is ready to take commands.
8735 * Now, if reset_devices and the hard reset didn't work, try
8736 * the soft reset and see if that works.
8738 if (try_soft_reset) {
8740 /* This is kind of gross. We may or may not get a completion
8741 * from the soft reset command, and if we do, then the value
8742 * from the fifo may or may not be valid. So, we wait 10 secs
8743 * after the reset throwing away any completions we get during
8744 * that time. Unregister the interrupt handler and register
8745 * fake ones to scoop up any residual completions.
8747 spin_lock_irqsave(&h->lock, flags);
8748 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8749 spin_unlock_irqrestore(&h->lock, flags);
8751 rc = hpsa_request_irqs(h, hpsa_msix_discard_completions,
8752 hpsa_intx_discard_completions);
8754 dev_warn(&h->pdev->dev,
8755 "Failed to request_irq after soft reset.\n");
8757 * cannot goto clean7 or free_irqs will be called
8758 * again. Instead, do its work
8760 hpsa_free_performant_mode(h); /* clean7 */
8761 hpsa_free_sg_chain_blocks(h); /* clean6 */
8762 hpsa_free_cmd_pool(h); /* clean5 */
8764 * skip hpsa_free_irqs(h) clean4 since that
8765 * was just called before request_irqs failed
8770 rc = hpsa_kdump_soft_reset(h);
8772 /* Neither hard nor soft reset worked, we're hosed. */
8775 dev_info(&h->pdev->dev, "Board READY.\n");
8776 dev_info(&h->pdev->dev,
8777 "Waiting for stale completions to drain.\n");
8778 h->access.set_intr_mask(h, HPSA_INTR_ON);
8780 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8782 rc = controller_reset_failed(h->cfgtable);
8784 dev_info(&h->pdev->dev,
8785 "Soft reset appears to have failed.\n");
8787 /* since the controller's reset, we have to go back and re-init
8788 * everything. Easiest to just forget what we've done and do it
8791 hpsa_undo_allocations_after_kdump_soft_reset(h);
8794 /* don't goto clean, we already unallocated */
8797 goto reinit_after_soft_reset;
8800 /* Enable Accelerated IO path at driver layer */
8801 h->acciopath_status = 1;
8802 /* Disable discovery polling.*/
8803 h->discovery_polling = 0;
8806 /* Turn the interrupts on so we can service requests */
8807 h->access.set_intr_mask(h, HPSA_INTR_ON);
8809 hpsa_hba_inquiry(h);
8811 h->lastlogicals = kzalloc(sizeof(*(h->lastlogicals)), GFP_KERNEL);
8812 if (!h->lastlogicals)
8813 dev_info(&h->pdev->dev,
8814 "Can't track change to report lun data\n");
8816 /* hook into SCSI subsystem */
8817 rc = hpsa_scsi_add_host(h);
8819 goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
8821 /* Monitor the controller for firmware lockups */
8822 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
8823 INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker);
8824 schedule_delayed_work(&h->monitor_ctlr_work,
8825 h->heartbeat_sample_interval);
8826 INIT_DELAYED_WORK(&h->rescan_ctlr_work, hpsa_rescan_ctlr_worker);
8827 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
8828 h->heartbeat_sample_interval);
8829 INIT_DELAYED_WORK(&h->event_monitor_work, hpsa_event_monitor_worker);
8830 schedule_delayed_work(&h->event_monitor_work,
8831 HPSA_EVENT_MONITOR_INTERVAL);
8834 clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
8835 hpsa_free_performant_mode(h);
8836 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8837 clean6: /* sg, cmd, irq, pci, lockup, wq/aer/h */
8838 hpsa_free_sg_chain_blocks(h);
8839 clean5: /* cmd, irq, shost, pci, lu, aer/h */
8840 hpsa_free_cmd_pool(h);
8841 clean4: /* irq, shost, pci, lu, aer/h */
8843 clean3: /* shost, pci, lu, aer/h */
8844 scsi_host_put(h->scsi_host);
8845 h->scsi_host = NULL;
8846 clean2_5: /* pci, lu, aer/h */
8847 hpsa_free_pci_init(h);
8848 clean2: /* lu, aer/h */
8849 if (h->lockup_detected) {
8850 free_percpu(h->lockup_detected);
8851 h->lockup_detected = NULL;
8853 clean1: /* wq/aer/h */
8854 if (h->resubmit_wq) {
8855 destroy_workqueue(h->resubmit_wq);
8856 h->resubmit_wq = NULL;
8858 if (h->rescan_ctlr_wq) {
8859 destroy_workqueue(h->rescan_ctlr_wq);
8860 h->rescan_ctlr_wq = NULL;
8862 if (h->monitor_ctlr_wq) {
8863 destroy_workqueue(h->monitor_ctlr_wq);
8864 h->monitor_ctlr_wq = NULL;
8870 static void hpsa_flush_cache(struct ctlr_info *h)
8873 struct CommandList *c;
8876 if (unlikely(lockup_detected(h)))
8878 flush_buf = kzalloc(4, GFP_KERNEL);
8884 if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0,
8885 RAID_CTLR_LUNID, TYPE_CMD)) {
8888 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_TO_DEVICE,
8892 if (c->err_info->CommandStatus != 0)
8894 dev_warn(&h->pdev->dev,
8895 "error flushing cache on controller\n");
8900 /* Make controller gather fresh report lun data each time we
8901 * send down a report luns request
8903 static void hpsa_disable_rld_caching(struct ctlr_info *h)
8906 struct CommandList *c;
8909 /* Don't bother trying to set diag options if locked up */
8910 if (unlikely(h->lockup_detected))
8913 options = kzalloc(sizeof(*options), GFP_KERNEL);
8919 /* first, get the current diag options settings */
8920 if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0,
8921 RAID_CTLR_LUNID, TYPE_CMD))
8924 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
8926 if ((rc != 0) || (c->err_info->CommandStatus != 0))
8929 /* Now, set the bit for disabling the RLD caching */
8930 *options |= HPSA_DIAG_OPTS_DISABLE_RLD_CACHING;
8932 if (fill_cmd(c, BMIC_SET_DIAG_OPTIONS, h, options, 4, 0,
8933 RAID_CTLR_LUNID, TYPE_CMD))
8936 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_TO_DEVICE,
8938 if ((rc != 0) || (c->err_info->CommandStatus != 0))
8941 /* Now verify that it got set: */
8942 if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0,
8943 RAID_CTLR_LUNID, TYPE_CMD))
8946 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
8948 if ((rc != 0) || (c->err_info->CommandStatus != 0))
8951 if (*options & HPSA_DIAG_OPTS_DISABLE_RLD_CACHING)
8955 dev_err(&h->pdev->dev,
8956 "Error: failed to disable report lun data caching.\n");
8962 static void __hpsa_shutdown(struct pci_dev *pdev)
8964 struct ctlr_info *h;
8966 h = pci_get_drvdata(pdev);
8967 /* Turn board interrupts off and send the flush cache command
8968 * sendcmd will turn off interrupt, and send the flush...
8969 * To write all data in the battery backed cache to disks
8971 hpsa_flush_cache(h);
8972 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8973 hpsa_free_irqs(h); /* init_one 4 */
8974 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
8977 static void hpsa_shutdown(struct pci_dev *pdev)
8979 __hpsa_shutdown(pdev);
8980 pci_disable_device(pdev);
8983 static void hpsa_free_device_info(struct ctlr_info *h)
8987 for (i = 0; i < h->ndevices; i++) {
8993 static void hpsa_remove_one(struct pci_dev *pdev)
8995 struct ctlr_info *h;
8996 unsigned long flags;
8998 if (pci_get_drvdata(pdev) == NULL) {
8999 dev_err(&pdev->dev, "unable to remove device\n");
9002 h = pci_get_drvdata(pdev);
9004 /* Get rid of any controller monitoring work items */
9005 spin_lock_irqsave(&h->lock, flags);
9006 h->remove_in_progress = 1;
9007 spin_unlock_irqrestore(&h->lock, flags);
9008 cancel_delayed_work_sync(&h->monitor_ctlr_work);
9009 cancel_delayed_work_sync(&h->rescan_ctlr_work);
9010 cancel_delayed_work_sync(&h->event_monitor_work);
9011 destroy_workqueue(h->rescan_ctlr_wq);
9012 destroy_workqueue(h->resubmit_wq);
9013 destroy_workqueue(h->monitor_ctlr_wq);
9015 hpsa_delete_sas_host(h);
9018 * Call before disabling interrupts.
9019 * scsi_remove_host can trigger I/O operations especially
9020 * when multipath is enabled. There can be SYNCHRONIZE CACHE
9021 * operations which cannot complete and will hang the system.
9024 scsi_remove_host(h->scsi_host); /* init_one 8 */
9025 /* includes hpsa_free_irqs - init_one 4 */
9026 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
9027 __hpsa_shutdown(pdev);
9029 hpsa_free_device_info(h); /* scan */
9031 kfree(h->hba_inquiry_data); /* init_one 10 */
9032 h->hba_inquiry_data = NULL; /* init_one 10 */
9033 hpsa_free_ioaccel2_sg_chain_blocks(h);
9034 hpsa_free_performant_mode(h); /* init_one 7 */
9035 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
9036 hpsa_free_cmd_pool(h); /* init_one 5 */
9037 kfree(h->lastlogicals);
9039 /* hpsa_free_irqs already called via hpsa_shutdown init_one 4 */
9041 scsi_host_put(h->scsi_host); /* init_one 3 */
9042 h->scsi_host = NULL; /* init_one 3 */
9044 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
9045 hpsa_free_pci_init(h); /* init_one 2.5 */
9047 free_percpu(h->lockup_detected); /* init_one 2 */
9048 h->lockup_detected = NULL; /* init_one 2 */
9049 /* (void) pci_disable_pcie_error_reporting(pdev); */ /* init_one 1 */
9051 hpda_free_ctlr_info(h); /* init_one 1 */
9054 static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
9055 __attribute__((unused)) pm_message_t state)
9060 static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
9065 static struct pci_driver hpsa_pci_driver = {
9067 .probe = hpsa_init_one,
9068 .remove = hpsa_remove_one,
9069 .id_table = hpsa_pci_device_id, /* id_table */
9070 .shutdown = hpsa_shutdown,
9071 .suspend = hpsa_suspend,
9072 .resume = hpsa_resume,
9075 /* Fill in bucket_map[], given nsgs (the max number of
9076 * scatter gather elements supported) and bucket[],
9077 * which is an array of 8 integers. The bucket[] array
9078 * contains 8 different DMA transfer sizes (in 16
9079 * byte increments) which the controller uses to fetch
9080 * commands. This function fills in bucket_map[], which
9081 * maps a given number of scatter gather elements to one of
9082 * the 8 DMA transfer sizes. The point of it is to allow the
9083 * controller to only do as much DMA as needed to fetch the
9084 * command, with the DMA transfer size encoded in the lower
9085 * bits of the command address.
9087 static void calc_bucket_map(int bucket[], int num_buckets,
9088 int nsgs, int min_blocks, u32 *bucket_map)
9092 /* Note, bucket_map must have nsgs+1 entries. */
9093 for (i = 0; i <= nsgs; i++) {
9094 /* Compute size of a command with i SG entries */
9095 size = i + min_blocks;
9096 b = num_buckets; /* Assume the biggest bucket */
9097 /* Find the bucket that is just big enough */
9098 for (j = 0; j < num_buckets; j++) {
9099 if (bucket[j] >= size) {
9104 /* for a command with i SG entries, use bucket b. */
9110 * return -ENODEV on err, 0 on success (or no action)
9111 * allocates numerous items that must be freed later
9113 static int hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support)
9116 unsigned long register_value;
9117 unsigned long transMethod = CFGTBL_Trans_Performant |
9118 (trans_support & CFGTBL_Trans_use_short_tags) |
9119 CFGTBL_Trans_enable_directed_msix |
9120 (trans_support & (CFGTBL_Trans_io_accel1 |
9121 CFGTBL_Trans_io_accel2));
9122 struct access_method access = SA5_performant_access;
9124 /* This is a bit complicated. There are 8 registers on
9125 * the controller which we write to to tell it 8 different
9126 * sizes of commands which there may be. It's a way of
9127 * reducing the DMA done to fetch each command. Encoded into
9128 * each command's tag are 3 bits which communicate to the controller
9129 * which of the eight sizes that command fits within. The size of
9130 * each command depends on how many scatter gather entries there are.
9131 * Each SG entry requires 16 bytes. The eight registers are programmed
9132 * with the number of 16-byte blocks a command of that size requires.
9133 * The smallest command possible requires 5 such 16 byte blocks.
9134 * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte
9135 * blocks. Note, this only extends to the SG entries contained
9136 * within the command block, and does not extend to chained blocks
9137 * of SG elements. bft[] contains the eight values we write to
9138 * the registers. They are not evenly distributed, but have more
9139 * sizes for small commands, and fewer sizes for larger commands.
9141 int bft[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD + 4};
9142 #define MIN_IOACCEL2_BFT_ENTRY 5
9143 #define HPSA_IOACCEL2_HEADER_SZ 4
9144 int bft2[16] = {MIN_IOACCEL2_BFT_ENTRY, 6, 7, 8, 9, 10, 11, 12,
9145 13, 14, 15, 16, 17, 18, 19,
9146 HPSA_IOACCEL2_HEADER_SZ + IOACCEL2_MAXSGENTRIES};
9147 BUILD_BUG_ON(ARRAY_SIZE(bft2) != 16);
9148 BUILD_BUG_ON(ARRAY_SIZE(bft) != 8);
9149 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) >
9150 16 * MIN_IOACCEL2_BFT_ENTRY);
9151 BUILD_BUG_ON(sizeof(struct ioaccel2_sg_element) != 16);
9152 BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD + 4);
9153 /* 5 = 1 s/g entry or 4k
9154 * 6 = 2 s/g entry or 8k
9155 * 8 = 4 s/g entry or 16k
9156 * 10 = 6 s/g entry or 24k
9159 /* If the controller supports either ioaccel method then
9160 * we can also use the RAID stack submit path that does not
9161 * perform the superfluous readl() after each command submission.
9163 if (trans_support & (CFGTBL_Trans_io_accel1 | CFGTBL_Trans_io_accel2))
9164 access = SA5_performant_access_no_read;
9166 /* Controller spec: zero out this buffer. */
9167 for (i = 0; i < h->nreply_queues; i++)
9168 memset(h->reply_queue[i].head, 0, h->reply_queue_size);
9170 bft[7] = SG_ENTRIES_IN_CMD + 4;
9171 calc_bucket_map(bft, ARRAY_SIZE(bft),
9172 SG_ENTRIES_IN_CMD, 4, h->blockFetchTable);
9173 for (i = 0; i < 8; i++)
9174 writel(bft[i], &h->transtable->BlockFetch[i]);
9176 /* size of controller ring buffer */
9177 writel(h->max_commands, &h->transtable->RepQSize);
9178 writel(h->nreply_queues, &h->transtable->RepQCount);
9179 writel(0, &h->transtable->RepQCtrAddrLow32);
9180 writel(0, &h->transtable->RepQCtrAddrHigh32);
9182 for (i = 0; i < h->nreply_queues; i++) {
9183 writel(0, &h->transtable->RepQAddr[i].upper);
9184 writel(h->reply_queue[i].busaddr,
9185 &h->transtable->RepQAddr[i].lower);
9188 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
9189 writel(transMethod, &(h->cfgtable->HostWrite.TransportRequest));
9191 * enable outbound interrupt coalescing in accelerator mode;
9193 if (trans_support & CFGTBL_Trans_io_accel1) {
9194 access = SA5_ioaccel_mode1_access;
9195 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
9196 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
9198 if (trans_support & CFGTBL_Trans_io_accel2)
9199 access = SA5_ioaccel_mode2_access;
9200 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
9201 if (hpsa_wait_for_mode_change_ack(h)) {
9202 dev_err(&h->pdev->dev,
9203 "performant mode problem - doorbell timeout\n");
9206 register_value = readl(&(h->cfgtable->TransportActive));
9207 if (!(register_value & CFGTBL_Trans_Performant)) {
9208 dev_err(&h->pdev->dev,
9209 "performant mode problem - transport not active\n");
9212 /* Change the access methods to the performant access methods */
9214 h->transMethod = transMethod;
9216 if (!((trans_support & CFGTBL_Trans_io_accel1) ||
9217 (trans_support & CFGTBL_Trans_io_accel2)))
9220 if (trans_support & CFGTBL_Trans_io_accel1) {
9221 /* Set up I/O accelerator mode */
9222 for (i = 0; i < h->nreply_queues; i++) {
9223 writel(i, h->vaddr + IOACCEL_MODE1_REPLY_QUEUE_INDEX);
9224 h->reply_queue[i].current_entry =
9225 readl(h->vaddr + IOACCEL_MODE1_PRODUCER_INDEX);
9227 bft[7] = h->ioaccel_maxsg + 8;
9228 calc_bucket_map(bft, ARRAY_SIZE(bft), h->ioaccel_maxsg, 8,
9229 h->ioaccel1_blockFetchTable);
9231 /* initialize all reply queue entries to unused */
9232 for (i = 0; i < h->nreply_queues; i++)
9233 memset(h->reply_queue[i].head,
9234 (u8) IOACCEL_MODE1_REPLY_UNUSED,
9235 h->reply_queue_size);
9237 /* set all the constant fields in the accelerator command
9238 * frames once at init time to save CPU cycles later.
9240 for (i = 0; i < h->nr_cmds; i++) {
9241 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[i];
9243 cp->function = IOACCEL1_FUNCTION_SCSIIO;
9244 cp->err_info = (u32) (h->errinfo_pool_dhandle +
9245 (i * sizeof(struct ErrorInfo)));
9246 cp->err_info_len = sizeof(struct ErrorInfo);
9247 cp->sgl_offset = IOACCEL1_SGLOFFSET;
9248 cp->host_context_flags =
9249 cpu_to_le16(IOACCEL1_HCFLAGS_CISS_FORMAT);
9250 cp->timeout_sec = 0;
9253 cpu_to_le64((i << DIRECT_LOOKUP_SHIFT));
9255 cpu_to_le64(h->ioaccel_cmd_pool_dhandle +
9256 (i * sizeof(struct io_accel1_cmd)));
9258 } else if (trans_support & CFGTBL_Trans_io_accel2) {
9259 u64 cfg_offset, cfg_base_addr_index;
9260 u32 bft2_offset, cfg_base_addr;
9263 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
9264 &cfg_base_addr_index, &cfg_offset);
9265 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) != 64);
9266 bft2[15] = h->ioaccel_maxsg + HPSA_IOACCEL2_HEADER_SZ;
9267 calc_bucket_map(bft2, ARRAY_SIZE(bft2), h->ioaccel_maxsg,
9268 4, h->ioaccel2_blockFetchTable);
9269 bft2_offset = readl(&h->cfgtable->io_accel_request_size_offset);
9270 BUILD_BUG_ON(offsetof(struct CfgTable,
9271 io_accel_request_size_offset) != 0xb8);
9272 h->ioaccel2_bft2_regs =
9273 remap_pci_mem(pci_resource_start(h->pdev,
9274 cfg_base_addr_index) +
9275 cfg_offset + bft2_offset,
9277 sizeof(*h->ioaccel2_bft2_regs));
9278 for (i = 0; i < ARRAY_SIZE(bft2); i++)
9279 writel(bft2[i], &h->ioaccel2_bft2_regs[i]);
9281 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
9282 if (hpsa_wait_for_mode_change_ack(h)) {
9283 dev_err(&h->pdev->dev,
9284 "performant mode problem - enabling ioaccel mode\n");
9290 /* Free ioaccel1 mode command blocks and block fetch table */
9291 static void hpsa_free_ioaccel1_cmd_and_bft(struct ctlr_info *h)
9293 if (h->ioaccel_cmd_pool) {
9294 pci_free_consistent(h->pdev,
9295 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
9296 h->ioaccel_cmd_pool,
9297 h->ioaccel_cmd_pool_dhandle);
9298 h->ioaccel_cmd_pool = NULL;
9299 h->ioaccel_cmd_pool_dhandle = 0;
9301 kfree(h->ioaccel1_blockFetchTable);
9302 h->ioaccel1_blockFetchTable = NULL;
9305 /* Allocate ioaccel1 mode command blocks and block fetch table */
9306 static int hpsa_alloc_ioaccel1_cmd_and_bft(struct ctlr_info *h)
9309 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
9310 if (h->ioaccel_maxsg > IOACCEL1_MAXSGENTRIES)
9311 h->ioaccel_maxsg = IOACCEL1_MAXSGENTRIES;
9313 /* Command structures must be aligned on a 128-byte boundary
9314 * because the 7 lower bits of the address are used by the
9317 BUILD_BUG_ON(sizeof(struct io_accel1_cmd) %
9318 IOACCEL1_COMMANDLIST_ALIGNMENT);
9319 h->ioaccel_cmd_pool =
9320 dma_alloc_coherent(&h->pdev->dev,
9321 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
9322 &h->ioaccel_cmd_pool_dhandle, GFP_KERNEL);
9324 h->ioaccel1_blockFetchTable =
9325 kmalloc(((h->ioaccel_maxsg + 1) *
9326 sizeof(u32)), GFP_KERNEL);
9328 if ((h->ioaccel_cmd_pool == NULL) ||
9329 (h->ioaccel1_blockFetchTable == NULL))
9332 memset(h->ioaccel_cmd_pool, 0,
9333 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool));
9337 hpsa_free_ioaccel1_cmd_and_bft(h);
9341 /* Free ioaccel2 mode command blocks and block fetch table */
9342 static void hpsa_free_ioaccel2_cmd_and_bft(struct ctlr_info *h)
9344 hpsa_free_ioaccel2_sg_chain_blocks(h);
9346 if (h->ioaccel2_cmd_pool) {
9347 pci_free_consistent(h->pdev,
9348 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
9349 h->ioaccel2_cmd_pool,
9350 h->ioaccel2_cmd_pool_dhandle);
9351 h->ioaccel2_cmd_pool = NULL;
9352 h->ioaccel2_cmd_pool_dhandle = 0;
9354 kfree(h->ioaccel2_blockFetchTable);
9355 h->ioaccel2_blockFetchTable = NULL;
9358 /* Allocate ioaccel2 mode command blocks and block fetch table */
9359 static int hpsa_alloc_ioaccel2_cmd_and_bft(struct ctlr_info *h)
9363 /* Allocate ioaccel2 mode command blocks and block fetch table */
9366 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
9367 if (h->ioaccel_maxsg > IOACCEL2_MAXSGENTRIES)
9368 h->ioaccel_maxsg = IOACCEL2_MAXSGENTRIES;
9370 BUILD_BUG_ON(sizeof(struct io_accel2_cmd) %
9371 IOACCEL2_COMMANDLIST_ALIGNMENT);
9372 h->ioaccel2_cmd_pool =
9373 dma_alloc_coherent(&h->pdev->dev,
9374 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
9375 &h->ioaccel2_cmd_pool_dhandle, GFP_KERNEL);
9377 h->ioaccel2_blockFetchTable =
9378 kmalloc(((h->ioaccel_maxsg + 1) *
9379 sizeof(u32)), GFP_KERNEL);
9381 if ((h->ioaccel2_cmd_pool == NULL) ||
9382 (h->ioaccel2_blockFetchTable == NULL)) {
9387 rc = hpsa_allocate_ioaccel2_sg_chain_blocks(h);
9391 memset(h->ioaccel2_cmd_pool, 0,
9392 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool));
9396 hpsa_free_ioaccel2_cmd_and_bft(h);
9400 /* Free items allocated by hpsa_put_ctlr_into_performant_mode */
9401 static void hpsa_free_performant_mode(struct ctlr_info *h)
9403 kfree(h->blockFetchTable);
9404 h->blockFetchTable = NULL;
9405 hpsa_free_reply_queues(h);
9406 hpsa_free_ioaccel1_cmd_and_bft(h);
9407 hpsa_free_ioaccel2_cmd_and_bft(h);
9410 /* return -ENODEV on error, 0 on success (or no action)
9411 * allocates numerous items that must be freed later
9413 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
9416 unsigned long transMethod = CFGTBL_Trans_Performant |
9417 CFGTBL_Trans_use_short_tags;
9420 if (hpsa_simple_mode)
9423 trans_support = readl(&(h->cfgtable->TransportSupport));
9424 if (!(trans_support & PERFORMANT_MODE))
9427 /* Check for I/O accelerator mode support */
9428 if (trans_support & CFGTBL_Trans_io_accel1) {
9429 transMethod |= CFGTBL_Trans_io_accel1 |
9430 CFGTBL_Trans_enable_directed_msix;
9431 rc = hpsa_alloc_ioaccel1_cmd_and_bft(h);
9434 } else if (trans_support & CFGTBL_Trans_io_accel2) {
9435 transMethod |= CFGTBL_Trans_io_accel2 |
9436 CFGTBL_Trans_enable_directed_msix;
9437 rc = hpsa_alloc_ioaccel2_cmd_and_bft(h);
9442 h->nreply_queues = h->msix_vectors > 0 ? h->msix_vectors : 1;
9443 hpsa_get_max_perf_mode_cmds(h);
9444 /* Performant mode ring buffer and supporting data structures */
9445 h->reply_queue_size = h->max_commands * sizeof(u64);
9447 for (i = 0; i < h->nreply_queues; i++) {
9448 h->reply_queue[i].head = dma_alloc_coherent(&h->pdev->dev,
9449 h->reply_queue_size,
9450 &h->reply_queue[i].busaddr,
9452 if (!h->reply_queue[i].head) {
9454 goto clean1; /* rq, ioaccel */
9456 h->reply_queue[i].size = h->max_commands;
9457 h->reply_queue[i].wraparound = 1; /* spec: init to 1 */
9458 h->reply_queue[i].current_entry = 0;
9461 /* Need a block fetch table for performant mode */
9462 h->blockFetchTable = kmalloc(((SG_ENTRIES_IN_CMD + 1) *
9463 sizeof(u32)), GFP_KERNEL);
9464 if (!h->blockFetchTable) {
9466 goto clean1; /* rq, ioaccel */
9469 rc = hpsa_enter_performant_mode(h, trans_support);
9471 goto clean2; /* bft, rq, ioaccel */
9474 clean2: /* bft, rq, ioaccel */
9475 kfree(h->blockFetchTable);
9476 h->blockFetchTable = NULL;
9477 clean1: /* rq, ioaccel */
9478 hpsa_free_reply_queues(h);
9479 hpsa_free_ioaccel1_cmd_and_bft(h);
9480 hpsa_free_ioaccel2_cmd_and_bft(h);
9484 static int is_accelerated_cmd(struct CommandList *c)
9486 return c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_IOACCEL2;
9489 static void hpsa_drain_accel_commands(struct ctlr_info *h)
9491 struct CommandList *c = NULL;
9492 int i, accel_cmds_out;
9495 do { /* wait for all outstanding ioaccel commands to drain out */
9497 for (i = 0; i < h->nr_cmds; i++) {
9498 c = h->cmd_pool + i;
9499 refcount = atomic_inc_return(&c->refcount);
9500 if (refcount > 1) /* Command is allocated */
9501 accel_cmds_out += is_accelerated_cmd(c);
9504 if (accel_cmds_out <= 0)
9510 static struct hpsa_sas_phy *hpsa_alloc_sas_phy(
9511 struct hpsa_sas_port *hpsa_sas_port)
9513 struct hpsa_sas_phy *hpsa_sas_phy;
9514 struct sas_phy *phy;
9516 hpsa_sas_phy = kzalloc(sizeof(*hpsa_sas_phy), GFP_KERNEL);
9520 phy = sas_phy_alloc(hpsa_sas_port->parent_node->parent_dev,
9521 hpsa_sas_port->next_phy_index);
9523 kfree(hpsa_sas_phy);
9527 hpsa_sas_port->next_phy_index++;
9528 hpsa_sas_phy->phy = phy;
9529 hpsa_sas_phy->parent_port = hpsa_sas_port;
9531 return hpsa_sas_phy;
9534 static void hpsa_free_sas_phy(struct hpsa_sas_phy *hpsa_sas_phy)
9536 struct sas_phy *phy = hpsa_sas_phy->phy;
9538 sas_port_delete_phy(hpsa_sas_phy->parent_port->port, phy);
9539 if (hpsa_sas_phy->added_to_port)
9540 list_del(&hpsa_sas_phy->phy_list_entry);
9541 sas_phy_delete(phy);
9542 kfree(hpsa_sas_phy);
9545 static int hpsa_sas_port_add_phy(struct hpsa_sas_phy *hpsa_sas_phy)
9548 struct hpsa_sas_port *hpsa_sas_port;
9549 struct sas_phy *phy;
9550 struct sas_identify *identify;
9552 hpsa_sas_port = hpsa_sas_phy->parent_port;
9553 phy = hpsa_sas_phy->phy;
9555 identify = &phy->identify;
9556 memset(identify, 0, sizeof(*identify));
9557 identify->sas_address = hpsa_sas_port->sas_address;
9558 identify->device_type = SAS_END_DEVICE;
9559 identify->initiator_port_protocols = SAS_PROTOCOL_STP;
9560 identify->target_port_protocols = SAS_PROTOCOL_STP;
9561 phy->minimum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
9562 phy->maximum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
9563 phy->minimum_linkrate = SAS_LINK_RATE_UNKNOWN;
9564 phy->maximum_linkrate = SAS_LINK_RATE_UNKNOWN;
9565 phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
9567 rc = sas_phy_add(hpsa_sas_phy->phy);
9571 sas_port_add_phy(hpsa_sas_port->port, hpsa_sas_phy->phy);
9572 list_add_tail(&hpsa_sas_phy->phy_list_entry,
9573 &hpsa_sas_port->phy_list_head);
9574 hpsa_sas_phy->added_to_port = true;
9580 hpsa_sas_port_add_rphy(struct hpsa_sas_port *hpsa_sas_port,
9581 struct sas_rphy *rphy)
9583 struct sas_identify *identify;
9585 identify = &rphy->identify;
9586 identify->sas_address = hpsa_sas_port->sas_address;
9587 identify->initiator_port_protocols = SAS_PROTOCOL_STP;
9588 identify->target_port_protocols = SAS_PROTOCOL_STP;
9590 return sas_rphy_add(rphy);
9593 static struct hpsa_sas_port
9594 *hpsa_alloc_sas_port(struct hpsa_sas_node *hpsa_sas_node,
9598 struct hpsa_sas_port *hpsa_sas_port;
9599 struct sas_port *port;
9601 hpsa_sas_port = kzalloc(sizeof(*hpsa_sas_port), GFP_KERNEL);
9605 INIT_LIST_HEAD(&hpsa_sas_port->phy_list_head);
9606 hpsa_sas_port->parent_node = hpsa_sas_node;
9608 port = sas_port_alloc_num(hpsa_sas_node->parent_dev);
9610 goto free_hpsa_port;
9612 rc = sas_port_add(port);
9616 hpsa_sas_port->port = port;
9617 hpsa_sas_port->sas_address = sas_address;
9618 list_add_tail(&hpsa_sas_port->port_list_entry,
9619 &hpsa_sas_node->port_list_head);
9621 return hpsa_sas_port;
9624 sas_port_free(port);
9626 kfree(hpsa_sas_port);
9631 static void hpsa_free_sas_port(struct hpsa_sas_port *hpsa_sas_port)
9633 struct hpsa_sas_phy *hpsa_sas_phy;
9634 struct hpsa_sas_phy *next;
9636 list_for_each_entry_safe(hpsa_sas_phy, next,
9637 &hpsa_sas_port->phy_list_head, phy_list_entry)
9638 hpsa_free_sas_phy(hpsa_sas_phy);
9640 sas_port_delete(hpsa_sas_port->port);
9641 list_del(&hpsa_sas_port->port_list_entry);
9642 kfree(hpsa_sas_port);
9645 static struct hpsa_sas_node *hpsa_alloc_sas_node(struct device *parent_dev)
9647 struct hpsa_sas_node *hpsa_sas_node;
9649 hpsa_sas_node = kzalloc(sizeof(*hpsa_sas_node), GFP_KERNEL);
9650 if (hpsa_sas_node) {
9651 hpsa_sas_node->parent_dev = parent_dev;
9652 INIT_LIST_HEAD(&hpsa_sas_node->port_list_head);
9655 return hpsa_sas_node;
9658 static void hpsa_free_sas_node(struct hpsa_sas_node *hpsa_sas_node)
9660 struct hpsa_sas_port *hpsa_sas_port;
9661 struct hpsa_sas_port *next;
9666 list_for_each_entry_safe(hpsa_sas_port, next,
9667 &hpsa_sas_node->port_list_head, port_list_entry)
9668 hpsa_free_sas_port(hpsa_sas_port);
9670 kfree(hpsa_sas_node);
9673 static struct hpsa_scsi_dev_t
9674 *hpsa_find_device_by_sas_rphy(struct ctlr_info *h,
9675 struct sas_rphy *rphy)
9678 struct hpsa_scsi_dev_t *device;
9680 for (i = 0; i < h->ndevices; i++) {
9682 if (!device->sas_port)
9684 if (device->sas_port->rphy == rphy)
9691 static int hpsa_add_sas_host(struct ctlr_info *h)
9694 struct device *parent_dev;
9695 struct hpsa_sas_node *hpsa_sas_node;
9696 struct hpsa_sas_port *hpsa_sas_port;
9697 struct hpsa_sas_phy *hpsa_sas_phy;
9699 parent_dev = &h->scsi_host->shost_dev;
9701 hpsa_sas_node = hpsa_alloc_sas_node(parent_dev);
9705 hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, h->sas_address);
9706 if (!hpsa_sas_port) {
9711 hpsa_sas_phy = hpsa_alloc_sas_phy(hpsa_sas_port);
9712 if (!hpsa_sas_phy) {
9717 rc = hpsa_sas_port_add_phy(hpsa_sas_phy);
9721 h->sas_host = hpsa_sas_node;
9726 hpsa_free_sas_phy(hpsa_sas_phy);
9728 hpsa_free_sas_port(hpsa_sas_port);
9730 hpsa_free_sas_node(hpsa_sas_node);
9735 static void hpsa_delete_sas_host(struct ctlr_info *h)
9737 hpsa_free_sas_node(h->sas_host);
9740 static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node,
9741 struct hpsa_scsi_dev_t *device)
9744 struct hpsa_sas_port *hpsa_sas_port;
9745 struct sas_rphy *rphy;
9747 hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, device->sas_address);
9751 rphy = sas_end_device_alloc(hpsa_sas_port->port);
9757 hpsa_sas_port->rphy = rphy;
9758 device->sas_port = hpsa_sas_port;
9760 rc = hpsa_sas_port_add_rphy(hpsa_sas_port, rphy);
9767 hpsa_free_sas_port(hpsa_sas_port);
9768 device->sas_port = NULL;
9773 static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device)
9775 if (device->sas_port) {
9776 hpsa_free_sas_port(device->sas_port);
9777 device->sas_port = NULL;
9782 hpsa_sas_get_linkerrors(struct sas_phy *phy)
9788 hpsa_sas_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
9790 struct Scsi_Host *shost = phy_to_shost(rphy);
9791 struct ctlr_info *h;
9792 struct hpsa_scsi_dev_t *sd;
9797 h = shost_to_hba(shost);
9802 sd = hpsa_find_device_by_sas_rphy(h, rphy);
9806 *identifier = sd->eli;
9812 hpsa_sas_get_bay_identifier(struct sas_rphy *rphy)
9818 hpsa_sas_phy_reset(struct sas_phy *phy, int hard_reset)
9824 hpsa_sas_phy_enable(struct sas_phy *phy, int enable)
9830 hpsa_sas_phy_setup(struct sas_phy *phy)
9836 hpsa_sas_phy_release(struct sas_phy *phy)
9841 hpsa_sas_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
9846 static struct sas_function_template hpsa_sas_transport_functions = {
9847 .get_linkerrors = hpsa_sas_get_linkerrors,
9848 .get_enclosure_identifier = hpsa_sas_get_enclosure_identifier,
9849 .get_bay_identifier = hpsa_sas_get_bay_identifier,
9850 .phy_reset = hpsa_sas_phy_reset,
9851 .phy_enable = hpsa_sas_phy_enable,
9852 .phy_setup = hpsa_sas_phy_setup,
9853 .phy_release = hpsa_sas_phy_release,
9854 .set_phy_speed = hpsa_sas_phy_speed,
9858 * This is it. Register the PCI driver information for the cards we control
9859 * the OS will call our registered routines when it finds one of our cards.
9861 static int __init hpsa_init(void)
9865 hpsa_sas_transport_template =
9866 sas_attach_transport(&hpsa_sas_transport_functions);
9867 if (!hpsa_sas_transport_template)
9870 rc = pci_register_driver(&hpsa_pci_driver);
9873 sas_release_transport(hpsa_sas_transport_template);
9878 static void __exit hpsa_cleanup(void)
9880 pci_unregister_driver(&hpsa_pci_driver);
9881 sas_release_transport(hpsa_sas_transport_template);
9884 static void __attribute__((unused)) verify_offsets(void)
9886 #define VERIFY_OFFSET(member, offset) \
9887 BUILD_BUG_ON(offsetof(struct raid_map_data, member) != offset)
9889 VERIFY_OFFSET(structure_size, 0);
9890 VERIFY_OFFSET(volume_blk_size, 4);
9891 VERIFY_OFFSET(volume_blk_cnt, 8);
9892 VERIFY_OFFSET(phys_blk_shift, 16);
9893 VERIFY_OFFSET(parity_rotation_shift, 17);
9894 VERIFY_OFFSET(strip_size, 18);
9895 VERIFY_OFFSET(disk_starting_blk, 20);
9896 VERIFY_OFFSET(disk_blk_cnt, 28);
9897 VERIFY_OFFSET(data_disks_per_row, 36);
9898 VERIFY_OFFSET(metadata_disks_per_row, 38);
9899 VERIFY_OFFSET(row_cnt, 40);
9900 VERIFY_OFFSET(layout_map_count, 42);
9901 VERIFY_OFFSET(flags, 44);
9902 VERIFY_OFFSET(dekindex, 46);
9903 /* VERIFY_OFFSET(reserved, 48 */
9904 VERIFY_OFFSET(data, 64);
9906 #undef VERIFY_OFFSET
9908 #define VERIFY_OFFSET(member, offset) \
9909 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, member) != offset)
9911 VERIFY_OFFSET(IU_type, 0);
9912 VERIFY_OFFSET(direction, 1);
9913 VERIFY_OFFSET(reply_queue, 2);
9914 /* VERIFY_OFFSET(reserved1, 3); */
9915 VERIFY_OFFSET(scsi_nexus, 4);
9916 VERIFY_OFFSET(Tag, 8);
9917 VERIFY_OFFSET(cdb, 16);
9918 VERIFY_OFFSET(cciss_lun, 32);
9919 VERIFY_OFFSET(data_len, 40);
9920 VERIFY_OFFSET(cmd_priority_task_attr, 44);
9921 VERIFY_OFFSET(sg_count, 45);
9922 /* VERIFY_OFFSET(reserved3 */
9923 VERIFY_OFFSET(err_ptr, 48);
9924 VERIFY_OFFSET(err_len, 56);
9925 /* VERIFY_OFFSET(reserved4 */
9926 VERIFY_OFFSET(sg, 64);
9928 #undef VERIFY_OFFSET
9930 #define VERIFY_OFFSET(member, offset) \
9931 BUILD_BUG_ON(offsetof(struct io_accel1_cmd, member) != offset)
9933 VERIFY_OFFSET(dev_handle, 0x00);
9934 VERIFY_OFFSET(reserved1, 0x02);
9935 VERIFY_OFFSET(function, 0x03);
9936 VERIFY_OFFSET(reserved2, 0x04);
9937 VERIFY_OFFSET(err_info, 0x0C);
9938 VERIFY_OFFSET(reserved3, 0x10);
9939 VERIFY_OFFSET(err_info_len, 0x12);
9940 VERIFY_OFFSET(reserved4, 0x13);
9941 VERIFY_OFFSET(sgl_offset, 0x14);
9942 VERIFY_OFFSET(reserved5, 0x15);
9943 VERIFY_OFFSET(transfer_len, 0x1C);
9944 VERIFY_OFFSET(reserved6, 0x20);
9945 VERIFY_OFFSET(io_flags, 0x24);
9946 VERIFY_OFFSET(reserved7, 0x26);
9947 VERIFY_OFFSET(LUN, 0x34);
9948 VERIFY_OFFSET(control, 0x3C);
9949 VERIFY_OFFSET(CDB, 0x40);
9950 VERIFY_OFFSET(reserved8, 0x50);
9951 VERIFY_OFFSET(host_context_flags, 0x60);
9952 VERIFY_OFFSET(timeout_sec, 0x62);
9953 VERIFY_OFFSET(ReplyQueue, 0x64);
9954 VERIFY_OFFSET(reserved9, 0x65);
9955 VERIFY_OFFSET(tag, 0x68);
9956 VERIFY_OFFSET(host_addr, 0x70);
9957 VERIFY_OFFSET(CISS_LUN, 0x78);
9958 VERIFY_OFFSET(SG, 0x78 + 8);
9959 #undef VERIFY_OFFSET
9962 module_init(hpsa_init);
9963 module_exit(hpsa_cleanup);