2 * Disk Array driver for HP Smart Array SAS controllers
3 * Copyright 2016 Microsemi Corporation
4 * Copyright 2014-2015 PMC-Sierra, Inc.
5 * Copyright 2000,2009-2015 Hewlett-Packard Development Company, L.P.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
14 * NON INFRINGEMENT. See the GNU General Public License for more details.
16 * Questions/Comments/Bugfixes to esc.storagedev@microsemi.com
20 #include <linux/module.h>
21 #include <linux/interrupt.h>
22 #include <linux/types.h>
23 #include <linux/pci.h>
24 #include <linux/pci-aspm.h>
25 #include <linux/kernel.h>
26 #include <linux/slab.h>
27 #include <linux/delay.h>
29 #include <linux/timer.h>
30 #include <linux/init.h>
31 #include <linux/spinlock.h>
32 #include <linux/compat.h>
33 #include <linux/blktrace_api.h>
34 #include <linux/uaccess.h>
36 #include <linux/dma-mapping.h>
37 #include <linux/completion.h>
38 #include <linux/moduleparam.h>
39 #include <scsi/scsi.h>
40 #include <scsi/scsi_cmnd.h>
41 #include <scsi/scsi_device.h>
42 #include <scsi/scsi_host.h>
43 #include <scsi/scsi_tcq.h>
44 #include <scsi/scsi_eh.h>
45 #include <scsi/scsi_transport_sas.h>
46 #include <scsi/scsi_dbg.h>
47 #include <linux/cciss_ioctl.h>
48 #include <linux/string.h>
49 #include <linux/bitmap.h>
50 #include <linux/atomic.h>
51 #include <linux/jiffies.h>
52 #include <linux/percpu-defs.h>
53 #include <linux/percpu.h>
54 #include <asm/unaligned.h>
55 #include <asm/div64.h>
60 * HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.'
61 * with an optional trailing '-' followed by a byte value (0-255).
63 #define HPSA_DRIVER_VERSION "3.4.20-125"
64 #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
67 /* How long to wait for CISS doorbell communication */
68 #define CLEAR_EVENT_WAIT_INTERVAL 20 /* ms for each msleep() call */
69 #define MODE_CHANGE_WAIT_INTERVAL 10 /* ms for each msleep() call */
70 #define MAX_CLEAR_EVENT_WAIT 30000 /* times 20 ms = 600 s */
71 #define MAX_MODE_CHANGE_WAIT 2000 /* times 10 ms = 20 s */
72 #define MAX_IOCTL_CONFIG_WAIT 1000
74 /*define how many times we will try a command because of bus resets */
75 #define MAX_CMD_RETRIES 3
77 /* Embedded module documentation macros - see modules.h */
78 MODULE_AUTHOR("Hewlett-Packard Company");
79 MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
81 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
82 MODULE_VERSION(HPSA_DRIVER_VERSION);
83 MODULE_LICENSE("GPL");
84 MODULE_ALIAS("cciss");
86 static int hpsa_simple_mode;
87 module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR);
88 MODULE_PARM_DESC(hpsa_simple_mode,
89 "Use 'simple mode' rather than 'performant mode'");
91 /* define the PCI info for the cards we can control */
92 static const struct pci_device_id hpsa_pci_device_id[] = {
93 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241},
94 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243},
95 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245},
96 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247},
97 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249},
98 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A},
99 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B},
100 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233},
101 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3350},
102 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3351},
103 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3352},
104 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3353},
105 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3354},
106 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3355},
107 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3356},
108 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103c, 0x1920},
109 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1921},
110 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1922},
111 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1923},
112 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1924},
113 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103c, 0x1925},
114 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1926},
115 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1928},
116 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1929},
117 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BD},
118 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BE},
119 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BF},
120 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C0},
121 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C1},
122 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C2},
123 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C3},
124 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C4},
125 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C5},
126 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C6},
127 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C7},
128 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C8},
129 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C9},
130 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CA},
131 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CB},
132 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CC},
133 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CD},
134 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CE},
135 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0580},
136 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0581},
137 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0582},
138 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0583},
139 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0584},
140 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0585},
141 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0076},
142 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0087},
143 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x007D},
144 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0088},
145 {PCI_VENDOR_ID_HP, 0x333f, 0x103c, 0x333f},
146 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
147 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
148 {PCI_VENDOR_ID_COMPAQ, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
149 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
153 MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id);
155 /* board_id = Subsystem Device ID & Vendor ID
156 * product = Marketing Name for the board
157 * access = Address of the struct of function pointers
159 static struct board_type products[] = {
160 {0x40700E11, "Smart Array 5300", &SA5A_access},
161 {0x40800E11, "Smart Array 5i", &SA5B_access},
162 {0x40820E11, "Smart Array 532", &SA5B_access},
163 {0x40830E11, "Smart Array 5312", &SA5B_access},
164 {0x409A0E11, "Smart Array 641", &SA5A_access},
165 {0x409B0E11, "Smart Array 642", &SA5A_access},
166 {0x409C0E11, "Smart Array 6400", &SA5A_access},
167 {0x409D0E11, "Smart Array 6400 EM", &SA5A_access},
168 {0x40910E11, "Smart Array 6i", &SA5A_access},
169 {0x3225103C, "Smart Array P600", &SA5A_access},
170 {0x3223103C, "Smart Array P800", &SA5A_access},
171 {0x3234103C, "Smart Array P400", &SA5A_access},
172 {0x3235103C, "Smart Array P400i", &SA5A_access},
173 {0x3211103C, "Smart Array E200i", &SA5A_access},
174 {0x3212103C, "Smart Array E200", &SA5A_access},
175 {0x3213103C, "Smart Array E200i", &SA5A_access},
176 {0x3214103C, "Smart Array E200i", &SA5A_access},
177 {0x3215103C, "Smart Array E200i", &SA5A_access},
178 {0x3237103C, "Smart Array E500", &SA5A_access},
179 {0x323D103C, "Smart Array P700m", &SA5A_access},
180 {0x3241103C, "Smart Array P212", &SA5_access},
181 {0x3243103C, "Smart Array P410", &SA5_access},
182 {0x3245103C, "Smart Array P410i", &SA5_access},
183 {0x3247103C, "Smart Array P411", &SA5_access},
184 {0x3249103C, "Smart Array P812", &SA5_access},
185 {0x324A103C, "Smart Array P712m", &SA5_access},
186 {0x324B103C, "Smart Array P711m", &SA5_access},
187 {0x3233103C, "HP StorageWorks 1210m", &SA5_access}, /* alias of 333f */
188 {0x3350103C, "Smart Array P222", &SA5_access},
189 {0x3351103C, "Smart Array P420", &SA5_access},
190 {0x3352103C, "Smart Array P421", &SA5_access},
191 {0x3353103C, "Smart Array P822", &SA5_access},
192 {0x3354103C, "Smart Array P420i", &SA5_access},
193 {0x3355103C, "Smart Array P220i", &SA5_access},
194 {0x3356103C, "Smart Array P721m", &SA5_access},
195 {0x1920103C, "Smart Array P430i", &SA5_access},
196 {0x1921103C, "Smart Array P830i", &SA5_access},
197 {0x1922103C, "Smart Array P430", &SA5_access},
198 {0x1923103C, "Smart Array P431", &SA5_access},
199 {0x1924103C, "Smart Array P830", &SA5_access},
200 {0x1925103C, "Smart Array P831", &SA5_access},
201 {0x1926103C, "Smart Array P731m", &SA5_access},
202 {0x1928103C, "Smart Array P230i", &SA5_access},
203 {0x1929103C, "Smart Array P530", &SA5_access},
204 {0x21BD103C, "Smart Array P244br", &SA5_access},
205 {0x21BE103C, "Smart Array P741m", &SA5_access},
206 {0x21BF103C, "Smart HBA H240ar", &SA5_access},
207 {0x21C0103C, "Smart Array P440ar", &SA5_access},
208 {0x21C1103C, "Smart Array P840ar", &SA5_access},
209 {0x21C2103C, "Smart Array P440", &SA5_access},
210 {0x21C3103C, "Smart Array P441", &SA5_access},
211 {0x21C4103C, "Smart Array", &SA5_access},
212 {0x21C5103C, "Smart Array P841", &SA5_access},
213 {0x21C6103C, "Smart HBA H244br", &SA5_access},
214 {0x21C7103C, "Smart HBA H240", &SA5_access},
215 {0x21C8103C, "Smart HBA H241", &SA5_access},
216 {0x21C9103C, "Smart Array", &SA5_access},
217 {0x21CA103C, "Smart Array P246br", &SA5_access},
218 {0x21CB103C, "Smart Array P840", &SA5_access},
219 {0x21CC103C, "Smart Array", &SA5_access},
220 {0x21CD103C, "Smart Array", &SA5_access},
221 {0x21CE103C, "Smart HBA", &SA5_access},
222 {0x05809005, "SmartHBA-SA", &SA5_access},
223 {0x05819005, "SmartHBA-SA 8i", &SA5_access},
224 {0x05829005, "SmartHBA-SA 8i8e", &SA5_access},
225 {0x05839005, "SmartHBA-SA 8e", &SA5_access},
226 {0x05849005, "SmartHBA-SA 16i", &SA5_access},
227 {0x05859005, "SmartHBA-SA 4i4e", &SA5_access},
228 {0x00761590, "HP Storage P1224 Array Controller", &SA5_access},
229 {0x00871590, "HP Storage P1224e Array Controller", &SA5_access},
230 {0x007D1590, "HP Storage P1228 Array Controller", &SA5_access},
231 {0x00881590, "HP Storage P1228e Array Controller", &SA5_access},
232 {0x333f103c, "HP StorageWorks 1210m Array Controller", &SA5_access},
233 {0xFFFF103C, "Unknown Smart Array", &SA5_access},
236 static struct scsi_transport_template *hpsa_sas_transport_template;
237 static int hpsa_add_sas_host(struct ctlr_info *h);
238 static void hpsa_delete_sas_host(struct ctlr_info *h);
239 static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node,
240 struct hpsa_scsi_dev_t *device);
241 static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device);
242 static struct hpsa_scsi_dev_t
243 *hpsa_find_device_by_sas_rphy(struct ctlr_info *h,
244 struct sas_rphy *rphy);
246 #define SCSI_CMD_BUSY ((struct scsi_cmnd *)&hpsa_cmd_busy)
247 static const struct scsi_cmnd hpsa_cmd_busy;
248 #define SCSI_CMD_IDLE ((struct scsi_cmnd *)&hpsa_cmd_idle)
249 static const struct scsi_cmnd hpsa_cmd_idle;
250 static int number_of_controllers;
252 static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id);
253 static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id);
254 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
257 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd,
261 static void cmd_free(struct ctlr_info *h, struct CommandList *c);
262 static struct CommandList *cmd_alloc(struct ctlr_info *h);
263 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c);
264 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
265 struct scsi_cmnd *scmd);
266 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
267 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
269 static void hpsa_free_cmd_pool(struct ctlr_info *h);
270 #define VPD_PAGE (1 << 8)
271 #define HPSA_SIMPLE_ERROR_BITS 0x03
273 static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
274 static void hpsa_scan_start(struct Scsi_Host *);
275 static int hpsa_scan_finished(struct Scsi_Host *sh,
276 unsigned long elapsed_time);
277 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth);
279 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd);
280 static int hpsa_slave_alloc(struct scsi_device *sdev);
281 static int hpsa_slave_configure(struct scsi_device *sdev);
282 static void hpsa_slave_destroy(struct scsi_device *sdev);
284 static void hpsa_update_scsi_devices(struct ctlr_info *h);
285 static int check_for_unit_attention(struct ctlr_info *h,
286 struct CommandList *c);
287 static void check_ioctl_unit_attention(struct ctlr_info *h,
288 struct CommandList *c);
289 /* performant mode helper functions */
290 static void calc_bucket_map(int *bucket, int num_buckets,
291 int nsgs, int min_blocks, u32 *bucket_map);
292 static void hpsa_free_performant_mode(struct ctlr_info *h);
293 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h);
294 static inline u32 next_command(struct ctlr_info *h, u8 q);
295 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
296 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
298 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
299 unsigned long *memory_bar);
300 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id,
302 static int wait_for_device_to_become_ready(struct ctlr_info *h,
303 unsigned char lunaddr[],
305 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
307 static inline void finish_cmd(struct CommandList *c);
308 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h);
309 #define BOARD_NOT_READY 0
310 #define BOARD_READY 1
311 static void hpsa_drain_accel_commands(struct ctlr_info *h);
312 static void hpsa_flush_cache(struct ctlr_info *h);
313 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
314 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
315 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk);
316 static void hpsa_command_resubmit_worker(struct work_struct *work);
317 static u32 lockup_detected(struct ctlr_info *h);
318 static int detect_controller_lockup(struct ctlr_info *h);
319 static void hpsa_disable_rld_caching(struct ctlr_info *h);
320 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
321 struct ReportExtendedLUNdata *buf, int bufsize);
322 static bool hpsa_vpd_page_supported(struct ctlr_info *h,
323 unsigned char scsi3addr[], u8 page);
324 static int hpsa_luns_changed(struct ctlr_info *h);
325 static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c,
326 struct hpsa_scsi_dev_t *dev,
327 unsigned char *scsi3addr);
329 static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
331 unsigned long *priv = shost_priv(sdev->host);
332 return (struct ctlr_info *) *priv;
335 static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh)
337 unsigned long *priv = shost_priv(sh);
338 return (struct ctlr_info *) *priv;
341 static inline bool hpsa_is_cmd_idle(struct CommandList *c)
343 return c->scsi_cmd == SCSI_CMD_IDLE;
346 static inline bool hpsa_is_pending_event(struct CommandList *c)
348 return c->reset_pending;
351 /* extract sense key, asc, and ascq from sense data. -1 means invalid. */
352 static void decode_sense_data(const u8 *sense_data, int sense_data_len,
353 u8 *sense_key, u8 *asc, u8 *ascq)
355 struct scsi_sense_hdr sshdr;
362 if (sense_data_len < 1)
365 rc = scsi_normalize_sense(sense_data, sense_data_len, &sshdr);
367 *sense_key = sshdr.sense_key;
373 static int check_for_unit_attention(struct ctlr_info *h,
374 struct CommandList *c)
376 u8 sense_key, asc, ascq;
379 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
380 sense_len = sizeof(c->err_info->SenseInfo);
382 sense_len = c->err_info->SenseLen;
384 decode_sense_data(c->err_info->SenseInfo, sense_len,
385 &sense_key, &asc, &ascq);
386 if (sense_key != UNIT_ATTENTION || asc == 0xff)
391 dev_warn(&h->pdev->dev,
392 "%s: a state change detected, command retried\n",
396 dev_warn(&h->pdev->dev,
397 "%s: LUN failure detected\n", h->devname);
399 case REPORT_LUNS_CHANGED:
400 dev_warn(&h->pdev->dev,
401 "%s: report LUN data changed\n", h->devname);
403 * Note: this REPORT_LUNS_CHANGED condition only occurs on the external
404 * target (array) devices.
408 dev_warn(&h->pdev->dev,
409 "%s: a power on or device reset detected\n",
412 case UNIT_ATTENTION_CLEARED:
413 dev_warn(&h->pdev->dev,
414 "%s: unit attention cleared by another initiator\n",
418 dev_warn(&h->pdev->dev,
419 "%s: unknown unit attention detected\n",
426 static int check_for_busy(struct ctlr_info *h, struct CommandList *c)
428 if (c->err_info->CommandStatus != CMD_TARGET_STATUS ||
429 (c->err_info->ScsiStatus != SAM_STAT_BUSY &&
430 c->err_info->ScsiStatus != SAM_STAT_TASK_SET_FULL))
432 dev_warn(&h->pdev->dev, HPSA "device busy");
436 static u32 lockup_detected(struct ctlr_info *h);
437 static ssize_t host_show_lockup_detected(struct device *dev,
438 struct device_attribute *attr, char *buf)
442 struct Scsi_Host *shost = class_to_shost(dev);
444 h = shost_to_hba(shost);
445 ld = lockup_detected(h);
447 return sprintf(buf, "ld=%d\n", ld);
450 static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev,
451 struct device_attribute *attr,
452 const char *buf, size_t count)
456 struct Scsi_Host *shost = class_to_shost(dev);
459 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
461 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
462 strncpy(tmpbuf, buf, len);
464 if (sscanf(tmpbuf, "%d", &status) != 1)
466 h = shost_to_hba(shost);
467 h->acciopath_status = !!status;
468 dev_warn(&h->pdev->dev,
469 "hpsa: HP SSD Smart Path %s via sysfs update.\n",
470 h->acciopath_status ? "enabled" : "disabled");
474 static ssize_t host_store_raid_offload_debug(struct device *dev,
475 struct device_attribute *attr,
476 const char *buf, size_t count)
478 int debug_level, len;
480 struct Scsi_Host *shost = class_to_shost(dev);
483 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
485 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
486 strncpy(tmpbuf, buf, len);
488 if (sscanf(tmpbuf, "%d", &debug_level) != 1)
492 h = shost_to_hba(shost);
493 h->raid_offload_debug = debug_level;
494 dev_warn(&h->pdev->dev, "hpsa: Set raid_offload_debug level = %d\n",
495 h->raid_offload_debug);
499 static ssize_t host_store_rescan(struct device *dev,
500 struct device_attribute *attr,
501 const char *buf, size_t count)
504 struct Scsi_Host *shost = class_to_shost(dev);
505 h = shost_to_hba(shost);
506 hpsa_scan_start(h->scsi_host);
510 static ssize_t host_show_firmware_revision(struct device *dev,
511 struct device_attribute *attr, char *buf)
514 struct Scsi_Host *shost = class_to_shost(dev);
515 unsigned char *fwrev;
517 h = shost_to_hba(shost);
518 if (!h->hba_inquiry_data)
520 fwrev = &h->hba_inquiry_data[32];
521 return snprintf(buf, 20, "%c%c%c%c\n",
522 fwrev[0], fwrev[1], fwrev[2], fwrev[3]);
525 static ssize_t host_show_commands_outstanding(struct device *dev,
526 struct device_attribute *attr, char *buf)
528 struct Scsi_Host *shost = class_to_shost(dev);
529 struct ctlr_info *h = shost_to_hba(shost);
531 return snprintf(buf, 20, "%d\n",
532 atomic_read(&h->commands_outstanding));
535 static ssize_t host_show_transport_mode(struct device *dev,
536 struct device_attribute *attr, char *buf)
539 struct Scsi_Host *shost = class_to_shost(dev);
541 h = shost_to_hba(shost);
542 return snprintf(buf, 20, "%s\n",
543 h->transMethod & CFGTBL_Trans_Performant ?
544 "performant" : "simple");
547 static ssize_t host_show_hp_ssd_smart_path_status(struct device *dev,
548 struct device_attribute *attr, char *buf)
551 struct Scsi_Host *shost = class_to_shost(dev);
553 h = shost_to_hba(shost);
554 return snprintf(buf, 30, "HP SSD Smart Path %s\n",
555 (h->acciopath_status == 1) ? "enabled" : "disabled");
558 /* List of controllers which cannot be hard reset on kexec with reset_devices */
559 static u32 unresettable_controller[] = {
560 0x324a103C, /* Smart Array P712m */
561 0x324b103C, /* Smart Array P711m */
562 0x3223103C, /* Smart Array P800 */
563 0x3234103C, /* Smart Array P400 */
564 0x3235103C, /* Smart Array P400i */
565 0x3211103C, /* Smart Array E200i */
566 0x3212103C, /* Smart Array E200 */
567 0x3213103C, /* Smart Array E200i */
568 0x3214103C, /* Smart Array E200i */
569 0x3215103C, /* Smart Array E200i */
570 0x3237103C, /* Smart Array E500 */
571 0x323D103C, /* Smart Array P700m */
572 0x40800E11, /* Smart Array 5i */
573 0x409C0E11, /* Smart Array 6400 */
574 0x409D0E11, /* Smart Array 6400 EM */
575 0x40700E11, /* Smart Array 5300 */
576 0x40820E11, /* Smart Array 532 */
577 0x40830E11, /* Smart Array 5312 */
578 0x409A0E11, /* Smart Array 641 */
579 0x409B0E11, /* Smart Array 642 */
580 0x40910E11, /* Smart Array 6i */
583 /* List of controllers which cannot even be soft reset */
584 static u32 soft_unresettable_controller[] = {
585 0x40800E11, /* Smart Array 5i */
586 0x40700E11, /* Smart Array 5300 */
587 0x40820E11, /* Smart Array 532 */
588 0x40830E11, /* Smart Array 5312 */
589 0x409A0E11, /* Smart Array 641 */
590 0x409B0E11, /* Smart Array 642 */
591 0x40910E11, /* Smart Array 6i */
592 /* Exclude 640x boards. These are two pci devices in one slot
593 * which share a battery backed cache module. One controls the
594 * cache, the other accesses the cache through the one that controls
595 * it. If we reset the one controlling the cache, the other will
596 * likely not be happy. Just forbid resetting this conjoined mess.
597 * The 640x isn't really supported by hpsa anyway.
599 0x409C0E11, /* Smart Array 6400 */
600 0x409D0E11, /* Smart Array 6400 EM */
603 static int board_id_in_array(u32 a[], int nelems, u32 board_id)
607 for (i = 0; i < nelems; i++)
608 if (a[i] == board_id)
613 static int ctlr_is_hard_resettable(u32 board_id)
615 return !board_id_in_array(unresettable_controller,
616 ARRAY_SIZE(unresettable_controller), board_id);
619 static int ctlr_is_soft_resettable(u32 board_id)
621 return !board_id_in_array(soft_unresettable_controller,
622 ARRAY_SIZE(soft_unresettable_controller), board_id);
625 static int ctlr_is_resettable(u32 board_id)
627 return ctlr_is_hard_resettable(board_id) ||
628 ctlr_is_soft_resettable(board_id);
631 static ssize_t host_show_resettable(struct device *dev,
632 struct device_attribute *attr, char *buf)
635 struct Scsi_Host *shost = class_to_shost(dev);
637 h = shost_to_hba(shost);
638 return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id));
641 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[])
643 return (scsi3addr[3] & 0xC0) == 0x40;
646 static const char * const raid_label[] = { "0", "4", "1(+0)", "5", "5+1", "6",
647 "1(+0)ADM", "UNKNOWN", "PHYS DRV"
649 #define HPSA_RAID_0 0
650 #define HPSA_RAID_4 1
651 #define HPSA_RAID_1 2 /* also used for RAID 10 */
652 #define HPSA_RAID_5 3 /* also used for RAID 50 */
653 #define HPSA_RAID_51 4
654 #define HPSA_RAID_6 5 /* also used for RAID 60 */
655 #define HPSA_RAID_ADM 6 /* also used for RAID 1+0 ADM */
656 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 2)
657 #define PHYSICAL_DRIVE (ARRAY_SIZE(raid_label) - 1)
659 static inline bool is_logical_device(struct hpsa_scsi_dev_t *device)
661 return !device->physical_device;
664 static ssize_t raid_level_show(struct device *dev,
665 struct device_attribute *attr, char *buf)
668 unsigned char rlevel;
670 struct scsi_device *sdev;
671 struct hpsa_scsi_dev_t *hdev;
674 sdev = to_scsi_device(dev);
675 h = sdev_to_hba(sdev);
676 spin_lock_irqsave(&h->lock, flags);
677 hdev = sdev->hostdata;
679 spin_unlock_irqrestore(&h->lock, flags);
683 /* Is this even a logical drive? */
684 if (!is_logical_device(hdev)) {
685 spin_unlock_irqrestore(&h->lock, flags);
686 l = snprintf(buf, PAGE_SIZE, "N/A\n");
690 rlevel = hdev->raid_level;
691 spin_unlock_irqrestore(&h->lock, flags);
692 if (rlevel > RAID_UNKNOWN)
693 rlevel = RAID_UNKNOWN;
694 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]);
698 static ssize_t lunid_show(struct device *dev,
699 struct device_attribute *attr, char *buf)
702 struct scsi_device *sdev;
703 struct hpsa_scsi_dev_t *hdev;
705 unsigned char lunid[8];
707 sdev = to_scsi_device(dev);
708 h = sdev_to_hba(sdev);
709 spin_lock_irqsave(&h->lock, flags);
710 hdev = sdev->hostdata;
712 spin_unlock_irqrestore(&h->lock, flags);
715 memcpy(lunid, hdev->scsi3addr, sizeof(lunid));
716 spin_unlock_irqrestore(&h->lock, flags);
717 return snprintf(buf, 20, "0x%8phN\n", lunid);
720 static ssize_t unique_id_show(struct device *dev,
721 struct device_attribute *attr, char *buf)
724 struct scsi_device *sdev;
725 struct hpsa_scsi_dev_t *hdev;
727 unsigned char sn[16];
729 sdev = to_scsi_device(dev);
730 h = sdev_to_hba(sdev);
731 spin_lock_irqsave(&h->lock, flags);
732 hdev = sdev->hostdata;
734 spin_unlock_irqrestore(&h->lock, flags);
737 memcpy(sn, hdev->device_id, sizeof(sn));
738 spin_unlock_irqrestore(&h->lock, flags);
739 return snprintf(buf, 16 * 2 + 2,
740 "%02X%02X%02X%02X%02X%02X%02X%02X"
741 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
742 sn[0], sn[1], sn[2], sn[3],
743 sn[4], sn[5], sn[6], sn[7],
744 sn[8], sn[9], sn[10], sn[11],
745 sn[12], sn[13], sn[14], sn[15]);
748 static ssize_t sas_address_show(struct device *dev,
749 struct device_attribute *attr, char *buf)
752 struct scsi_device *sdev;
753 struct hpsa_scsi_dev_t *hdev;
757 sdev = to_scsi_device(dev);
758 h = sdev_to_hba(sdev);
759 spin_lock_irqsave(&h->lock, flags);
760 hdev = sdev->hostdata;
761 if (!hdev || is_logical_device(hdev) || !hdev->expose_device) {
762 spin_unlock_irqrestore(&h->lock, flags);
765 sas_address = hdev->sas_address;
766 spin_unlock_irqrestore(&h->lock, flags);
768 return snprintf(buf, PAGE_SIZE, "0x%016llx\n", sas_address);
771 static ssize_t host_show_hp_ssd_smart_path_enabled(struct device *dev,
772 struct device_attribute *attr, char *buf)
775 struct scsi_device *sdev;
776 struct hpsa_scsi_dev_t *hdev;
780 sdev = to_scsi_device(dev);
781 h = sdev_to_hba(sdev);
782 spin_lock_irqsave(&h->lock, flags);
783 hdev = sdev->hostdata;
785 spin_unlock_irqrestore(&h->lock, flags);
788 offload_enabled = hdev->offload_enabled;
789 spin_unlock_irqrestore(&h->lock, flags);
791 if (hdev->devtype == TYPE_DISK || hdev->devtype == TYPE_ZBC)
792 return snprintf(buf, 20, "%d\n", offload_enabled);
794 return snprintf(buf, 40, "%s\n",
795 "Not applicable for a controller");
799 static ssize_t path_info_show(struct device *dev,
800 struct device_attribute *attr, char *buf)
803 struct scsi_device *sdev;
804 struct hpsa_scsi_dev_t *hdev;
810 u8 path_map_index = 0;
812 unsigned char phys_connector[2];
814 sdev = to_scsi_device(dev);
815 h = sdev_to_hba(sdev);
816 spin_lock_irqsave(&h->devlock, flags);
817 hdev = sdev->hostdata;
819 spin_unlock_irqrestore(&h->devlock, flags);
824 for (i = 0; i < MAX_PATHS; i++) {
825 path_map_index = 1<<i;
826 if (i == hdev->active_path_index)
828 else if (hdev->path_map & path_map_index)
833 output_len += scnprintf(buf + output_len,
834 PAGE_SIZE - output_len,
835 "[%d:%d:%d:%d] %20.20s ",
836 h->scsi_host->host_no,
837 hdev->bus, hdev->target, hdev->lun,
838 scsi_device_type(hdev->devtype));
840 if (hdev->devtype == TYPE_RAID || is_logical_device(hdev)) {
841 output_len += scnprintf(buf + output_len,
842 PAGE_SIZE - output_len,
848 memcpy(&phys_connector, &hdev->phys_connector[i],
849 sizeof(phys_connector));
850 if (phys_connector[0] < '0')
851 phys_connector[0] = '0';
852 if (phys_connector[1] < '0')
853 phys_connector[1] = '0';
854 output_len += scnprintf(buf + output_len,
855 PAGE_SIZE - output_len,
858 if ((hdev->devtype == TYPE_DISK || hdev->devtype == TYPE_ZBC) &&
859 hdev->expose_device) {
860 if (box == 0 || box == 0xFF) {
861 output_len += scnprintf(buf + output_len,
862 PAGE_SIZE - output_len,
866 output_len += scnprintf(buf + output_len,
867 PAGE_SIZE - output_len,
868 "BOX: %hhu BAY: %hhu %s\n",
871 } else if (box != 0 && box != 0xFF) {
872 output_len += scnprintf(buf + output_len,
873 PAGE_SIZE - output_len, "BOX: %hhu %s\n",
876 output_len += scnprintf(buf + output_len,
877 PAGE_SIZE - output_len, "%s\n", active);
880 spin_unlock_irqrestore(&h->devlock, flags);
884 static ssize_t host_show_ctlr_num(struct device *dev,
885 struct device_attribute *attr, char *buf)
888 struct Scsi_Host *shost = class_to_shost(dev);
890 h = shost_to_hba(shost);
891 return snprintf(buf, 20, "%d\n", h->ctlr);
894 static ssize_t host_show_legacy_board(struct device *dev,
895 struct device_attribute *attr, char *buf)
898 struct Scsi_Host *shost = class_to_shost(dev);
900 h = shost_to_hba(shost);
901 return snprintf(buf, 20, "%d\n", h->legacy_board ? 1 : 0);
904 static DEVICE_ATTR_RO(raid_level);
905 static DEVICE_ATTR_RO(lunid);
906 static DEVICE_ATTR_RO(unique_id);
907 static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
908 static DEVICE_ATTR_RO(sas_address);
909 static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO,
910 host_show_hp_ssd_smart_path_enabled, NULL);
911 static DEVICE_ATTR_RO(path_info);
912 static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH,
913 host_show_hp_ssd_smart_path_status,
914 host_store_hp_ssd_smart_path_status);
915 static DEVICE_ATTR(raid_offload_debug, S_IWUSR, NULL,
916 host_store_raid_offload_debug);
917 static DEVICE_ATTR(firmware_revision, S_IRUGO,
918 host_show_firmware_revision, NULL);
919 static DEVICE_ATTR(commands_outstanding, S_IRUGO,
920 host_show_commands_outstanding, NULL);
921 static DEVICE_ATTR(transport_mode, S_IRUGO,
922 host_show_transport_mode, NULL);
923 static DEVICE_ATTR(resettable, S_IRUGO,
924 host_show_resettable, NULL);
925 static DEVICE_ATTR(lockup_detected, S_IRUGO,
926 host_show_lockup_detected, NULL);
927 static DEVICE_ATTR(ctlr_num, S_IRUGO,
928 host_show_ctlr_num, NULL);
929 static DEVICE_ATTR(legacy_board, S_IRUGO,
930 host_show_legacy_board, NULL);
932 static struct device_attribute *hpsa_sdev_attrs[] = {
933 &dev_attr_raid_level,
936 &dev_attr_hp_ssd_smart_path_enabled,
938 &dev_attr_sas_address,
942 static struct device_attribute *hpsa_shost_attrs[] = {
944 &dev_attr_firmware_revision,
945 &dev_attr_commands_outstanding,
946 &dev_attr_transport_mode,
947 &dev_attr_resettable,
948 &dev_attr_hp_ssd_smart_path_status,
949 &dev_attr_raid_offload_debug,
950 &dev_attr_lockup_detected,
952 &dev_attr_legacy_board,
956 #define HPSA_NRESERVED_CMDS (HPSA_CMDS_RESERVED_FOR_DRIVER +\
957 HPSA_MAX_CONCURRENT_PASSTHRUS)
959 static struct scsi_host_template hpsa_driver_template = {
960 .module = THIS_MODULE,
963 .queuecommand = hpsa_scsi_queue_command,
964 .scan_start = hpsa_scan_start,
965 .scan_finished = hpsa_scan_finished,
966 .change_queue_depth = hpsa_change_queue_depth,
968 .eh_device_reset_handler = hpsa_eh_device_reset_handler,
970 .slave_alloc = hpsa_slave_alloc,
971 .slave_configure = hpsa_slave_configure,
972 .slave_destroy = hpsa_slave_destroy,
974 .compat_ioctl = hpsa_compat_ioctl,
976 .sdev_attrs = hpsa_sdev_attrs,
977 .shost_attrs = hpsa_shost_attrs,
982 static inline u32 next_command(struct ctlr_info *h, u8 q)
985 struct reply_queue_buffer *rq = &h->reply_queue[q];
987 if (h->transMethod & CFGTBL_Trans_io_accel1)
988 return h->access.command_completed(h, q);
990 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
991 return h->access.command_completed(h, q);
993 if ((rq->head[rq->current_entry] & 1) == rq->wraparound) {
994 a = rq->head[rq->current_entry];
996 atomic_dec(&h->commands_outstanding);
1000 /* Check for wraparound */
1001 if (rq->current_entry == h->max_commands) {
1002 rq->current_entry = 0;
1003 rq->wraparound ^= 1;
1009 * There are some special bits in the bus address of the
1010 * command that we have to set for the controller to know
1011 * how to process the command:
1013 * Normal performant mode:
1014 * bit 0: 1 means performant mode, 0 means simple mode.
1015 * bits 1-3 = block fetch table entry
1016 * bits 4-6 = command type (== 0)
1019 * bit 0 = "performant mode" bit.
1020 * bits 1-3 = block fetch table entry
1021 * bits 4-6 = command type (== 110)
1022 * (command type is needed because ioaccel1 mode
1023 * commands are submitted through the same register as normal
1024 * mode commands, so this is how the controller knows whether
1025 * the command is normal mode or ioaccel1 mode.)
1028 * bit 0 = "performant mode" bit.
1029 * bits 1-4 = block fetch table entry (note extra bit)
1030 * bits 4-6 = not needed, because ioaccel2 mode has
1031 * a separate special register for submitting commands.
1035 * set_performant_mode: Modify the tag for cciss performant
1036 * set bit 0 for pull model, bits 3-1 for block fetch
1039 #define DEFAULT_REPLY_QUEUE (-1)
1040 static void set_performant_mode(struct ctlr_info *h, struct CommandList *c,
1043 if (likely(h->transMethod & CFGTBL_Trans_Performant)) {
1044 c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1);
1045 if (unlikely(!h->msix_vectors))
1047 c->Header.ReplyQueue = reply_queue;
1051 static void set_ioaccel1_performant_mode(struct ctlr_info *h,
1052 struct CommandList *c,
1055 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
1058 * Tell the controller to post the reply to the queue for this
1059 * processor. This seems to give the best I/O throughput.
1061 cp->ReplyQueue = reply_queue;
1063 * Set the bits in the address sent down to include:
1064 * - performant mode bit (bit 0)
1065 * - pull count (bits 1-3)
1066 * - command type (bits 4-6)
1068 c->busaddr |= 1 | (h->ioaccel1_blockFetchTable[c->Header.SGList] << 1) |
1069 IOACCEL1_BUSADDR_CMDTYPE;
1072 static void set_ioaccel2_tmf_performant_mode(struct ctlr_info *h,
1073 struct CommandList *c,
1076 struct hpsa_tmf_struct *cp = (struct hpsa_tmf_struct *)
1077 &h->ioaccel2_cmd_pool[c->cmdindex];
1079 /* Tell the controller to post the reply to the queue for this
1080 * processor. This seems to give the best I/O throughput.
1082 cp->reply_queue = reply_queue;
1083 /* Set the bits in the address sent down to include:
1084 * - performant mode bit not used in ioaccel mode 2
1085 * - pull count (bits 0-3)
1086 * - command type isn't needed for ioaccel2
1088 c->busaddr |= h->ioaccel2_blockFetchTable[0];
1091 static void set_ioaccel2_performant_mode(struct ctlr_info *h,
1092 struct CommandList *c,
1095 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
1098 * Tell the controller to post the reply to the queue for this
1099 * processor. This seems to give the best I/O throughput.
1101 cp->reply_queue = reply_queue;
1103 * Set the bits in the address sent down to include:
1104 * - performant mode bit not used in ioaccel mode 2
1105 * - pull count (bits 0-3)
1106 * - command type isn't needed for ioaccel2
1108 c->busaddr |= (h->ioaccel2_blockFetchTable[cp->sg_count]);
1111 static int is_firmware_flash_cmd(u8 *cdb)
1113 return cdb[0] == BMIC_WRITE && cdb[6] == BMIC_FLASH_FIRMWARE;
1117 * During firmware flash, the heartbeat register may not update as frequently
1118 * as it should. So we dial down lockup detection during firmware flash. and
1119 * dial it back up when firmware flash completes.
1121 #define HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH (240 * HZ)
1122 #define HEARTBEAT_SAMPLE_INTERVAL (30 * HZ)
1123 #define HPSA_EVENT_MONITOR_INTERVAL (15 * HZ)
1124 static void dial_down_lockup_detection_during_fw_flash(struct ctlr_info *h,
1125 struct CommandList *c)
1127 if (!is_firmware_flash_cmd(c->Request.CDB))
1129 atomic_inc(&h->firmware_flash_in_progress);
1130 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH;
1133 static void dial_up_lockup_detection_on_fw_flash_complete(struct ctlr_info *h,
1134 struct CommandList *c)
1136 if (is_firmware_flash_cmd(c->Request.CDB) &&
1137 atomic_dec_and_test(&h->firmware_flash_in_progress))
1138 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
1141 static void __enqueue_cmd_and_start_io(struct ctlr_info *h,
1142 struct CommandList *c, int reply_queue)
1144 dial_down_lockup_detection_during_fw_flash(h, c);
1145 atomic_inc(&h->commands_outstanding);
1147 reply_queue = h->reply_map[raw_smp_processor_id()];
1148 switch (c->cmd_type) {
1150 set_ioaccel1_performant_mode(h, c, reply_queue);
1151 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
1154 set_ioaccel2_performant_mode(h, c, reply_queue);
1155 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
1158 set_ioaccel2_tmf_performant_mode(h, c, reply_queue);
1159 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
1162 set_performant_mode(h, c, reply_queue);
1163 h->access.submit_command(h, c);
1167 static void enqueue_cmd_and_start_io(struct ctlr_info *h, struct CommandList *c)
1169 if (unlikely(hpsa_is_pending_event(c)))
1170 return finish_cmd(c);
1172 __enqueue_cmd_and_start_io(h, c, DEFAULT_REPLY_QUEUE);
1175 static inline int is_hba_lunid(unsigned char scsi3addr[])
1177 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0;
1180 static inline int is_scsi_rev_5(struct ctlr_info *h)
1182 if (!h->hba_inquiry_data)
1184 if ((h->hba_inquiry_data[2] & 0x07) == 5)
1189 static int hpsa_find_target_lun(struct ctlr_info *h,
1190 unsigned char scsi3addr[], int bus, int *target, int *lun)
1192 /* finds an unused bus, target, lun for a new physical device
1193 * assumes h->devlock is held
1196 DECLARE_BITMAP(lun_taken, HPSA_MAX_DEVICES);
1198 bitmap_zero(lun_taken, HPSA_MAX_DEVICES);
1200 for (i = 0; i < h->ndevices; i++) {
1201 if (h->dev[i]->bus == bus && h->dev[i]->target != -1)
1202 __set_bit(h->dev[i]->target, lun_taken);
1205 i = find_first_zero_bit(lun_taken, HPSA_MAX_DEVICES);
1206 if (i < HPSA_MAX_DEVICES) {
1215 static void hpsa_show_dev_msg(const char *level, struct ctlr_info *h,
1216 struct hpsa_scsi_dev_t *dev, char *description)
1218 #define LABEL_SIZE 25
1219 char label[LABEL_SIZE];
1221 if (h == NULL || h->pdev == NULL || h->scsi_host == NULL)
1224 switch (dev->devtype) {
1226 snprintf(label, LABEL_SIZE, "controller");
1228 case TYPE_ENCLOSURE:
1229 snprintf(label, LABEL_SIZE, "enclosure");
1234 snprintf(label, LABEL_SIZE, "external");
1235 else if (!is_logical_dev_addr_mode(dev->scsi3addr))
1236 snprintf(label, LABEL_SIZE, "%s",
1237 raid_label[PHYSICAL_DRIVE]);
1239 snprintf(label, LABEL_SIZE, "RAID-%s",
1240 dev->raid_level > RAID_UNKNOWN ? "?" :
1241 raid_label[dev->raid_level]);
1244 snprintf(label, LABEL_SIZE, "rom");
1247 snprintf(label, LABEL_SIZE, "tape");
1249 case TYPE_MEDIUM_CHANGER:
1250 snprintf(label, LABEL_SIZE, "changer");
1253 snprintf(label, LABEL_SIZE, "UNKNOWN");
1257 dev_printk(level, &h->pdev->dev,
1258 "scsi %d:%d:%d:%d: %s %s %.8s %.16s %s SSDSmartPathCap%c En%c Exp=%d\n",
1259 h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
1261 scsi_device_type(dev->devtype),
1265 dev->offload_config ? '+' : '-',
1266 dev->offload_to_be_enabled ? '+' : '-',
1267 dev->expose_device);
1270 /* Add an entry into h->dev[] array. */
1271 static int hpsa_scsi_add_entry(struct ctlr_info *h,
1272 struct hpsa_scsi_dev_t *device,
1273 struct hpsa_scsi_dev_t *added[], int *nadded)
1275 /* assumes h->devlock is held */
1276 int n = h->ndevices;
1278 unsigned char addr1[8], addr2[8];
1279 struct hpsa_scsi_dev_t *sd;
1281 if (n >= HPSA_MAX_DEVICES) {
1282 dev_err(&h->pdev->dev, "too many devices, some will be "
1287 /* physical devices do not have lun or target assigned until now. */
1288 if (device->lun != -1)
1289 /* Logical device, lun is already assigned. */
1292 /* If this device a non-zero lun of a multi-lun device
1293 * byte 4 of the 8-byte LUN addr will contain the logical
1294 * unit no, zero otherwise.
1296 if (device->scsi3addr[4] == 0) {
1297 /* This is not a non-zero lun of a multi-lun device */
1298 if (hpsa_find_target_lun(h, device->scsi3addr,
1299 device->bus, &device->target, &device->lun) != 0)
1304 /* This is a non-zero lun of a multi-lun device.
1305 * Search through our list and find the device which
1306 * has the same 8 byte LUN address, excepting byte 4 and 5.
1307 * Assign the same bus and target for this new LUN.
1308 * Use the logical unit number from the firmware.
1310 memcpy(addr1, device->scsi3addr, 8);
1313 for (i = 0; i < n; i++) {
1315 memcpy(addr2, sd->scsi3addr, 8);
1318 /* differ only in byte 4 and 5? */
1319 if (memcmp(addr1, addr2, 8) == 0) {
1320 device->bus = sd->bus;
1321 device->target = sd->target;
1322 device->lun = device->scsi3addr[4];
1326 if (device->lun == -1) {
1327 dev_warn(&h->pdev->dev, "physical device with no LUN=0,"
1328 " suspect firmware bug or unsupported hardware "
1329 "configuration.\n");
1337 added[*nadded] = device;
1339 hpsa_show_dev_msg(KERN_INFO, h, device,
1340 device->expose_device ? "added" : "masked");
1345 * Called during a scan operation.
1347 * Update an entry in h->dev[] array.
1349 static void hpsa_scsi_update_entry(struct ctlr_info *h,
1350 int entry, struct hpsa_scsi_dev_t *new_entry)
1352 /* assumes h->devlock is held */
1353 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1355 /* Raid level changed. */
1356 h->dev[entry]->raid_level = new_entry->raid_level;
1359 * ioacccel_handle may have changed for a dual domain disk
1361 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1363 /* Raid offload parameters changed. Careful about the ordering. */
1364 if (new_entry->offload_config && new_entry->offload_to_be_enabled) {
1366 * if drive is newly offload_enabled, we want to copy the
1367 * raid map data first. If previously offload_enabled and
1368 * offload_config were set, raid map data had better be
1369 * the same as it was before. If raid map data has changed
1370 * then it had better be the case that
1371 * h->dev[entry]->offload_enabled is currently 0.
1373 h->dev[entry]->raid_map = new_entry->raid_map;
1374 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1376 if (new_entry->offload_to_be_enabled) {
1377 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1378 wmb(); /* set ioaccel_handle *before* hba_ioaccel_enabled */
1380 h->dev[entry]->hba_ioaccel_enabled = new_entry->hba_ioaccel_enabled;
1381 h->dev[entry]->offload_config = new_entry->offload_config;
1382 h->dev[entry]->offload_to_mirror = new_entry->offload_to_mirror;
1383 h->dev[entry]->queue_depth = new_entry->queue_depth;
1386 * We can turn off ioaccel offload now, but need to delay turning
1387 * ioaccel on until we can update h->dev[entry]->phys_disk[], but we
1388 * can't do that until all the devices are updated.
1390 h->dev[entry]->offload_to_be_enabled = new_entry->offload_to_be_enabled;
1393 * turn ioaccel off immediately if told to do so.
1395 if (!new_entry->offload_to_be_enabled)
1396 h->dev[entry]->offload_enabled = 0;
1398 hpsa_show_dev_msg(KERN_INFO, h, h->dev[entry], "updated");
1401 /* Replace an entry from h->dev[] array. */
1402 static void hpsa_scsi_replace_entry(struct ctlr_info *h,
1403 int entry, struct hpsa_scsi_dev_t *new_entry,
1404 struct hpsa_scsi_dev_t *added[], int *nadded,
1405 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1407 /* assumes h->devlock is held */
1408 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1409 removed[*nremoved] = h->dev[entry];
1413 * New physical devices won't have target/lun assigned yet
1414 * so we need to preserve the values in the slot we are replacing.
1416 if (new_entry->target == -1) {
1417 new_entry->target = h->dev[entry]->target;
1418 new_entry->lun = h->dev[entry]->lun;
1421 h->dev[entry] = new_entry;
1422 added[*nadded] = new_entry;
1425 hpsa_show_dev_msg(KERN_INFO, h, new_entry, "replaced");
1428 /* Remove an entry from h->dev[] array. */
1429 static void hpsa_scsi_remove_entry(struct ctlr_info *h, int entry,
1430 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1432 /* assumes h->devlock is held */
1434 struct hpsa_scsi_dev_t *sd;
1436 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1439 removed[*nremoved] = h->dev[entry];
1442 for (i = entry; i < h->ndevices-1; i++)
1443 h->dev[i] = h->dev[i+1];
1445 hpsa_show_dev_msg(KERN_INFO, h, sd, "removed");
1448 #define SCSI3ADDR_EQ(a, b) ( \
1449 (a)[7] == (b)[7] && \
1450 (a)[6] == (b)[6] && \
1451 (a)[5] == (b)[5] && \
1452 (a)[4] == (b)[4] && \
1453 (a)[3] == (b)[3] && \
1454 (a)[2] == (b)[2] && \
1455 (a)[1] == (b)[1] && \
1458 static void fixup_botched_add(struct ctlr_info *h,
1459 struct hpsa_scsi_dev_t *added)
1461 /* called when scsi_add_device fails in order to re-adjust
1462 * h->dev[] to match the mid layer's view.
1464 unsigned long flags;
1467 spin_lock_irqsave(&h->lock, flags);
1468 for (i = 0; i < h->ndevices; i++) {
1469 if (h->dev[i] == added) {
1470 for (j = i; j < h->ndevices-1; j++)
1471 h->dev[j] = h->dev[j+1];
1476 spin_unlock_irqrestore(&h->lock, flags);
1480 static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1,
1481 struct hpsa_scsi_dev_t *dev2)
1483 /* we compare everything except lun and target as these
1484 * are not yet assigned. Compare parts likely
1487 if (memcmp(dev1->scsi3addr, dev2->scsi3addr,
1488 sizeof(dev1->scsi3addr)) != 0)
1490 if (memcmp(dev1->device_id, dev2->device_id,
1491 sizeof(dev1->device_id)) != 0)
1493 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0)
1495 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0)
1497 if (dev1->devtype != dev2->devtype)
1499 if (dev1->bus != dev2->bus)
1504 static inline int device_updated(struct hpsa_scsi_dev_t *dev1,
1505 struct hpsa_scsi_dev_t *dev2)
1507 /* Device attributes that can change, but don't mean
1508 * that the device is a different device, nor that the OS
1509 * needs to be told anything about the change.
1511 if (dev1->raid_level != dev2->raid_level)
1513 if (dev1->offload_config != dev2->offload_config)
1515 if (dev1->offload_to_be_enabled != dev2->offload_to_be_enabled)
1517 if (!is_logical_dev_addr_mode(dev1->scsi3addr))
1518 if (dev1->queue_depth != dev2->queue_depth)
1521 * This can happen for dual domain devices. An active
1522 * path change causes the ioaccel handle to change
1524 * for example note the handle differences between p0 and p1
1525 * Device WWN ,WWN hash,Handle
1526 * D016 p0|0x3 [02]P2E:01:01,0x5000C5005FC4DACA,0x9B5616,0x01030003
1527 * p1 0x5000C5005FC4DAC9,0x6798C0,0x00040004
1529 if (dev1->ioaccel_handle != dev2->ioaccel_handle)
1534 /* Find needle in haystack. If exact match found, return DEVICE_SAME,
1535 * and return needle location in *index. If scsi3addr matches, but not
1536 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
1537 * location in *index.
1538 * In the case of a minor device attribute change, such as RAID level, just
1539 * return DEVICE_UPDATED, along with the updated device's location in index.
1540 * If needle not found, return DEVICE_NOT_FOUND.
1542 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle,
1543 struct hpsa_scsi_dev_t *haystack[], int haystack_size,
1547 #define DEVICE_NOT_FOUND 0
1548 #define DEVICE_CHANGED 1
1549 #define DEVICE_SAME 2
1550 #define DEVICE_UPDATED 3
1552 return DEVICE_NOT_FOUND;
1554 for (i = 0; i < haystack_size; i++) {
1555 if (haystack[i] == NULL) /* previously removed. */
1557 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) {
1559 if (device_is_the_same(needle, haystack[i])) {
1560 if (device_updated(needle, haystack[i]))
1561 return DEVICE_UPDATED;
1564 /* Keep offline devices offline */
1565 if (needle->volume_offline)
1566 return DEVICE_NOT_FOUND;
1567 return DEVICE_CHANGED;
1572 return DEVICE_NOT_FOUND;
1575 static void hpsa_monitor_offline_device(struct ctlr_info *h,
1576 unsigned char scsi3addr[])
1578 struct offline_device_entry *device;
1579 unsigned long flags;
1581 /* Check to see if device is already on the list */
1582 spin_lock_irqsave(&h->offline_device_lock, flags);
1583 list_for_each_entry(device, &h->offline_device_list, offline_list) {
1584 if (memcmp(device->scsi3addr, scsi3addr,
1585 sizeof(device->scsi3addr)) == 0) {
1586 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1590 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1592 /* Device is not on the list, add it. */
1593 device = kmalloc(sizeof(*device), GFP_KERNEL);
1597 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
1598 spin_lock_irqsave(&h->offline_device_lock, flags);
1599 list_add_tail(&device->offline_list, &h->offline_device_list);
1600 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1603 /* Print a message explaining various offline volume states */
1604 static void hpsa_show_volume_status(struct ctlr_info *h,
1605 struct hpsa_scsi_dev_t *sd)
1607 if (sd->volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED)
1608 dev_info(&h->pdev->dev,
1609 "C%d:B%d:T%d:L%d Volume status is not available through vital product data pages.\n",
1610 h->scsi_host->host_no,
1611 sd->bus, sd->target, sd->lun);
1612 switch (sd->volume_offline) {
1615 case HPSA_LV_UNDERGOING_ERASE:
1616 dev_info(&h->pdev->dev,
1617 "C%d:B%d:T%d:L%d Volume is undergoing background erase process.\n",
1618 h->scsi_host->host_no,
1619 sd->bus, sd->target, sd->lun);
1621 case HPSA_LV_NOT_AVAILABLE:
1622 dev_info(&h->pdev->dev,
1623 "C%d:B%d:T%d:L%d Volume is waiting for transforming volume.\n",
1624 h->scsi_host->host_no,
1625 sd->bus, sd->target, sd->lun);
1627 case HPSA_LV_UNDERGOING_RPI:
1628 dev_info(&h->pdev->dev,
1629 "C%d:B%d:T%d:L%d Volume is undergoing rapid parity init.\n",
1630 h->scsi_host->host_no,
1631 sd->bus, sd->target, sd->lun);
1633 case HPSA_LV_PENDING_RPI:
1634 dev_info(&h->pdev->dev,
1635 "C%d:B%d:T%d:L%d Volume is queued for rapid parity initialization process.\n",
1636 h->scsi_host->host_no,
1637 sd->bus, sd->target, sd->lun);
1639 case HPSA_LV_ENCRYPTED_NO_KEY:
1640 dev_info(&h->pdev->dev,
1641 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because key is not present.\n",
1642 h->scsi_host->host_no,
1643 sd->bus, sd->target, sd->lun);
1645 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
1646 dev_info(&h->pdev->dev,
1647 "C%d:B%d:T%d:L%d Volume is not encrypted and cannot be accessed because controller is in encryption-only mode.\n",
1648 h->scsi_host->host_no,
1649 sd->bus, sd->target, sd->lun);
1651 case HPSA_LV_UNDERGOING_ENCRYPTION:
1652 dev_info(&h->pdev->dev,
1653 "C%d:B%d:T%d:L%d Volume is undergoing encryption process.\n",
1654 h->scsi_host->host_no,
1655 sd->bus, sd->target, sd->lun);
1657 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
1658 dev_info(&h->pdev->dev,
1659 "C%d:B%d:T%d:L%d Volume is undergoing encryption re-keying process.\n",
1660 h->scsi_host->host_no,
1661 sd->bus, sd->target, sd->lun);
1663 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
1664 dev_info(&h->pdev->dev,
1665 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because controller does not have encryption enabled.\n",
1666 h->scsi_host->host_no,
1667 sd->bus, sd->target, sd->lun);
1669 case HPSA_LV_PENDING_ENCRYPTION:
1670 dev_info(&h->pdev->dev,
1671 "C%d:B%d:T%d:L%d Volume is pending migration to encrypted state, but process has not started.\n",
1672 h->scsi_host->host_no,
1673 sd->bus, sd->target, sd->lun);
1675 case HPSA_LV_PENDING_ENCRYPTION_REKEYING:
1676 dev_info(&h->pdev->dev,
1677 "C%d:B%d:T%d:L%d Volume is encrypted and is pending encryption rekeying.\n",
1678 h->scsi_host->host_no,
1679 sd->bus, sd->target, sd->lun);
1685 * Figure the list of physical drive pointers for a logical drive with
1686 * raid offload configured.
1688 static void hpsa_figure_phys_disk_ptrs(struct ctlr_info *h,
1689 struct hpsa_scsi_dev_t *dev[], int ndevices,
1690 struct hpsa_scsi_dev_t *logical_drive)
1692 struct raid_map_data *map = &logical_drive->raid_map;
1693 struct raid_map_disk_data *dd = &map->data[0];
1695 int total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
1696 le16_to_cpu(map->metadata_disks_per_row);
1697 int nraid_map_entries = le16_to_cpu(map->row_cnt) *
1698 le16_to_cpu(map->layout_map_count) *
1699 total_disks_per_row;
1700 int nphys_disk = le16_to_cpu(map->layout_map_count) *
1701 total_disks_per_row;
1704 if (nraid_map_entries > RAID_MAP_MAX_ENTRIES)
1705 nraid_map_entries = RAID_MAP_MAX_ENTRIES;
1707 logical_drive->nphysical_disks = nraid_map_entries;
1710 for (i = 0; i < nraid_map_entries; i++) {
1711 logical_drive->phys_disk[i] = NULL;
1712 if (!logical_drive->offload_config)
1714 for (j = 0; j < ndevices; j++) {
1717 if (dev[j]->devtype != TYPE_DISK &&
1718 dev[j]->devtype != TYPE_ZBC)
1720 if (is_logical_device(dev[j]))
1722 if (dev[j]->ioaccel_handle != dd[i].ioaccel_handle)
1725 logical_drive->phys_disk[i] = dev[j];
1727 qdepth = min(h->nr_cmds, qdepth +
1728 logical_drive->phys_disk[i]->queue_depth);
1733 * This can happen if a physical drive is removed and
1734 * the logical drive is degraded. In that case, the RAID
1735 * map data will refer to a physical disk which isn't actually
1736 * present. And in that case offload_enabled should already
1737 * be 0, but we'll turn it off here just in case
1739 if (!logical_drive->phys_disk[i]) {
1740 dev_warn(&h->pdev->dev,
1741 "%s: [%d:%d:%d:%d] A phys disk component of LV is missing, turning off offload_enabled for LV.\n",
1743 h->scsi_host->host_no, logical_drive->bus,
1744 logical_drive->target, logical_drive->lun);
1745 logical_drive->offload_enabled = 0;
1746 logical_drive->offload_to_be_enabled = 0;
1747 logical_drive->queue_depth = 8;
1750 if (nraid_map_entries)
1752 * This is correct for reads, too high for full stripe writes,
1753 * way too high for partial stripe writes
1755 logical_drive->queue_depth = qdepth;
1757 if (logical_drive->external)
1758 logical_drive->queue_depth = EXTERNAL_QD;
1760 logical_drive->queue_depth = h->nr_cmds;
1764 static void hpsa_update_log_drive_phys_drive_ptrs(struct ctlr_info *h,
1765 struct hpsa_scsi_dev_t *dev[], int ndevices)
1769 for (i = 0; i < ndevices; i++) {
1772 if (dev[i]->devtype != TYPE_DISK &&
1773 dev[i]->devtype != TYPE_ZBC)
1775 if (!is_logical_device(dev[i]))
1779 * If offload is currently enabled, the RAID map and
1780 * phys_disk[] assignment *better* not be changing
1781 * because we would be changing ioaccel phsy_disk[] pointers
1782 * on a ioaccel volume processing I/O requests.
1784 * If an ioaccel volume status changed, initially because it was
1785 * re-configured and thus underwent a transformation, or
1786 * a drive failed, we would have received a state change
1787 * request and ioaccel should have been turned off. When the
1788 * transformation completes, we get another state change
1789 * request to turn ioaccel back on. In this case, we need
1790 * to update the ioaccel information.
1792 * Thus: If it is not currently enabled, but will be after
1793 * the scan completes, make sure the ioaccel pointers
1797 if (!dev[i]->offload_enabled && dev[i]->offload_to_be_enabled)
1798 hpsa_figure_phys_disk_ptrs(h, dev, ndevices, dev[i]);
1802 static int hpsa_add_device(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
1809 if (is_logical_device(device)) /* RAID */
1810 rc = scsi_add_device(h->scsi_host, device->bus,
1811 device->target, device->lun);
1813 rc = hpsa_add_sas_device(h->sas_host, device);
1818 static int hpsa_find_outstanding_commands_for_dev(struct ctlr_info *h,
1819 struct hpsa_scsi_dev_t *dev)
1824 for (i = 0; i < h->nr_cmds; i++) {
1825 struct CommandList *c = h->cmd_pool + i;
1826 int refcount = atomic_inc_return(&c->refcount);
1828 if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev,
1830 unsigned long flags;
1832 spin_lock_irqsave(&h->lock, flags); /* Implied MB */
1833 if (!hpsa_is_cmd_idle(c))
1835 spin_unlock_irqrestore(&h->lock, flags);
1844 static void hpsa_wait_for_outstanding_commands_for_dev(struct ctlr_info *h,
1845 struct hpsa_scsi_dev_t *device)
1851 cmds = hpsa_find_outstanding_commands_for_dev(h, device);
1860 dev_warn(&h->pdev->dev,
1861 "%s: removing device with %d outstanding commands!\n",
1865 static void hpsa_remove_device(struct ctlr_info *h,
1866 struct hpsa_scsi_dev_t *device)
1868 struct scsi_device *sdev = NULL;
1874 * Allow for commands to drain
1876 device->removed = 1;
1877 hpsa_wait_for_outstanding_commands_for_dev(h, device);
1879 if (is_logical_device(device)) { /* RAID */
1880 sdev = scsi_device_lookup(h->scsi_host, device->bus,
1881 device->target, device->lun);
1883 scsi_remove_device(sdev);
1884 scsi_device_put(sdev);
1887 * We don't expect to get here. Future commands
1888 * to this device will get a selection timeout as
1889 * if the device were gone.
1891 hpsa_show_dev_msg(KERN_WARNING, h, device,
1892 "didn't find device for removal.");
1896 hpsa_remove_sas_device(device);
1900 static void adjust_hpsa_scsi_table(struct ctlr_info *h,
1901 struct hpsa_scsi_dev_t *sd[], int nsds)
1903 /* sd contains scsi3 addresses and devtypes, and inquiry
1904 * data. This function takes what's in sd to be the current
1905 * reality and updates h->dev[] to reflect that reality.
1907 int i, entry, device_change, changes = 0;
1908 struct hpsa_scsi_dev_t *csd;
1909 unsigned long flags;
1910 struct hpsa_scsi_dev_t **added, **removed;
1911 int nadded, nremoved;
1914 * A reset can cause a device status to change
1915 * re-schedule the scan to see what happened.
1917 spin_lock_irqsave(&h->reset_lock, flags);
1918 if (h->reset_in_progress) {
1919 h->drv_req_rescan = 1;
1920 spin_unlock_irqrestore(&h->reset_lock, flags);
1923 spin_unlock_irqrestore(&h->reset_lock, flags);
1925 added = kcalloc(HPSA_MAX_DEVICES, sizeof(*added), GFP_KERNEL);
1926 removed = kcalloc(HPSA_MAX_DEVICES, sizeof(*removed), GFP_KERNEL);
1928 if (!added || !removed) {
1929 dev_warn(&h->pdev->dev, "out of memory in "
1930 "adjust_hpsa_scsi_table\n");
1934 spin_lock_irqsave(&h->devlock, flags);
1936 /* find any devices in h->dev[] that are not in
1937 * sd[] and remove them from h->dev[], and for any
1938 * devices which have changed, remove the old device
1939 * info and add the new device info.
1940 * If minor device attributes change, just update
1941 * the existing device structure.
1946 while (i < h->ndevices) {
1948 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry);
1949 if (device_change == DEVICE_NOT_FOUND) {
1951 hpsa_scsi_remove_entry(h, i, removed, &nremoved);
1952 continue; /* remove ^^^, hence i not incremented */
1953 } else if (device_change == DEVICE_CHANGED) {
1955 hpsa_scsi_replace_entry(h, i, sd[entry],
1956 added, &nadded, removed, &nremoved);
1957 /* Set it to NULL to prevent it from being freed
1958 * at the bottom of hpsa_update_scsi_devices()
1961 } else if (device_change == DEVICE_UPDATED) {
1962 hpsa_scsi_update_entry(h, i, sd[entry]);
1967 /* Now, make sure every device listed in sd[] is also
1968 * listed in h->dev[], adding them if they aren't found
1971 for (i = 0; i < nsds; i++) {
1972 if (!sd[i]) /* if already added above. */
1975 /* Don't add devices which are NOT READY, FORMAT IN PROGRESS
1976 * as the SCSI mid-layer does not handle such devices well.
1977 * It relentlessly loops sending TUR at 3Hz, then READ(10)
1978 * at 160Hz, and prevents the system from coming up.
1980 if (sd[i]->volume_offline) {
1981 hpsa_show_volume_status(h, sd[i]);
1982 hpsa_show_dev_msg(KERN_INFO, h, sd[i], "offline");
1986 device_change = hpsa_scsi_find_entry(sd[i], h->dev,
1987 h->ndevices, &entry);
1988 if (device_change == DEVICE_NOT_FOUND) {
1990 if (hpsa_scsi_add_entry(h, sd[i], added, &nadded) != 0)
1992 sd[i] = NULL; /* prevent from being freed later. */
1993 } else if (device_change == DEVICE_CHANGED) {
1994 /* should never happen... */
1996 dev_warn(&h->pdev->dev,
1997 "device unexpectedly changed.\n");
1998 /* but if it does happen, we just ignore that device */
2001 hpsa_update_log_drive_phys_drive_ptrs(h, h->dev, h->ndevices);
2004 * Now that h->dev[]->phys_disk[] is coherent, we can enable
2005 * any logical drives that need it enabled.
2007 * The raid map should be current by now.
2009 * We are updating the device list used for I/O requests.
2011 for (i = 0; i < h->ndevices; i++) {
2012 if (h->dev[i] == NULL)
2014 h->dev[i]->offload_enabled = h->dev[i]->offload_to_be_enabled;
2017 spin_unlock_irqrestore(&h->devlock, flags);
2019 /* Monitor devices which are in one of several NOT READY states to be
2020 * brought online later. This must be done without holding h->devlock,
2021 * so don't touch h->dev[]
2023 for (i = 0; i < nsds; i++) {
2024 if (!sd[i]) /* if already added above. */
2026 if (sd[i]->volume_offline)
2027 hpsa_monitor_offline_device(h, sd[i]->scsi3addr);
2030 /* Don't notify scsi mid layer of any changes the first time through
2031 * (or if there are no changes) scsi_scan_host will do it later the
2032 * first time through.
2037 /* Notify scsi mid layer of any removed devices */
2038 for (i = 0; i < nremoved; i++) {
2039 if (removed[i] == NULL)
2041 if (removed[i]->expose_device)
2042 hpsa_remove_device(h, removed[i]);
2047 /* Notify scsi mid layer of any added devices */
2048 for (i = 0; i < nadded; i++) {
2051 if (added[i] == NULL)
2053 if (!(added[i]->expose_device))
2055 rc = hpsa_add_device(h, added[i]);
2058 dev_warn(&h->pdev->dev,
2059 "addition failed %d, device not added.", rc);
2060 /* now we have to remove it from h->dev,
2061 * since it didn't get added to scsi mid layer
2063 fixup_botched_add(h, added[i]);
2064 h->drv_req_rescan = 1;
2073 * Lookup bus/target/lun and return corresponding struct hpsa_scsi_dev_t *
2074 * Assume's h->devlock is held.
2076 static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h,
2077 int bus, int target, int lun)
2080 struct hpsa_scsi_dev_t *sd;
2082 for (i = 0; i < h->ndevices; i++) {
2084 if (sd->bus == bus && sd->target == target && sd->lun == lun)
2090 static int hpsa_slave_alloc(struct scsi_device *sdev)
2092 struct hpsa_scsi_dev_t *sd = NULL;
2093 unsigned long flags;
2094 struct ctlr_info *h;
2096 h = sdev_to_hba(sdev);
2097 spin_lock_irqsave(&h->devlock, flags);
2098 if (sdev_channel(sdev) == HPSA_PHYSICAL_DEVICE_BUS) {
2099 struct scsi_target *starget;
2100 struct sas_rphy *rphy;
2102 starget = scsi_target(sdev);
2103 rphy = target_to_rphy(starget);
2104 sd = hpsa_find_device_by_sas_rphy(h, rphy);
2106 sd->target = sdev_id(sdev);
2107 sd->lun = sdev->lun;
2111 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev),
2112 sdev_id(sdev), sdev->lun);
2114 if (sd && sd->expose_device) {
2115 atomic_set(&sd->ioaccel_cmds_out, 0);
2116 sdev->hostdata = sd;
2118 sdev->hostdata = NULL;
2119 spin_unlock_irqrestore(&h->devlock, flags);
2123 /* configure scsi device based on internal per-device structure */
2124 static int hpsa_slave_configure(struct scsi_device *sdev)
2126 struct hpsa_scsi_dev_t *sd;
2129 sd = sdev->hostdata;
2130 sdev->no_uld_attach = !sd || !sd->expose_device;
2134 queue_depth = EXTERNAL_QD;
2136 queue_depth = sd->queue_depth != 0 ?
2137 sd->queue_depth : sdev->host->can_queue;
2139 queue_depth = sdev->host->can_queue;
2141 scsi_change_queue_depth(sdev, queue_depth);
2146 static void hpsa_slave_destroy(struct scsi_device *sdev)
2148 /* nothing to do. */
2151 static void hpsa_free_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
2155 if (!h->ioaccel2_cmd_sg_list)
2157 for (i = 0; i < h->nr_cmds; i++) {
2158 kfree(h->ioaccel2_cmd_sg_list[i]);
2159 h->ioaccel2_cmd_sg_list[i] = NULL;
2161 kfree(h->ioaccel2_cmd_sg_list);
2162 h->ioaccel2_cmd_sg_list = NULL;
2165 static int hpsa_allocate_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
2169 if (h->chainsize <= 0)
2172 h->ioaccel2_cmd_sg_list =
2173 kcalloc(h->nr_cmds, sizeof(*h->ioaccel2_cmd_sg_list),
2175 if (!h->ioaccel2_cmd_sg_list)
2177 for (i = 0; i < h->nr_cmds; i++) {
2178 h->ioaccel2_cmd_sg_list[i] =
2179 kmalloc_array(h->maxsgentries,
2180 sizeof(*h->ioaccel2_cmd_sg_list[i]),
2182 if (!h->ioaccel2_cmd_sg_list[i])
2188 hpsa_free_ioaccel2_sg_chain_blocks(h);
2192 static void hpsa_free_sg_chain_blocks(struct ctlr_info *h)
2196 if (!h->cmd_sg_list)
2198 for (i = 0; i < h->nr_cmds; i++) {
2199 kfree(h->cmd_sg_list[i]);
2200 h->cmd_sg_list[i] = NULL;
2202 kfree(h->cmd_sg_list);
2203 h->cmd_sg_list = NULL;
2206 static int hpsa_alloc_sg_chain_blocks(struct ctlr_info *h)
2210 if (h->chainsize <= 0)
2213 h->cmd_sg_list = kcalloc(h->nr_cmds, sizeof(*h->cmd_sg_list),
2215 if (!h->cmd_sg_list)
2218 for (i = 0; i < h->nr_cmds; i++) {
2219 h->cmd_sg_list[i] = kmalloc_array(h->chainsize,
2220 sizeof(*h->cmd_sg_list[i]),
2222 if (!h->cmd_sg_list[i])
2229 hpsa_free_sg_chain_blocks(h);
2233 static int hpsa_map_ioaccel2_sg_chain_block(struct ctlr_info *h,
2234 struct io_accel2_cmd *cp, struct CommandList *c)
2236 struct ioaccel2_sg_element *chain_block;
2240 chain_block = h->ioaccel2_cmd_sg_list[c->cmdindex];
2241 chain_size = le32_to_cpu(cp->sg[0].length);
2242 temp64 = dma_map_single(&h->pdev->dev, chain_block, chain_size,
2244 if (dma_mapping_error(&h->pdev->dev, temp64)) {
2245 /* prevent subsequent unmapping */
2246 cp->sg->address = 0;
2249 cp->sg->address = cpu_to_le64(temp64);
2253 static void hpsa_unmap_ioaccel2_sg_chain_block(struct ctlr_info *h,
2254 struct io_accel2_cmd *cp)
2256 struct ioaccel2_sg_element *chain_sg;
2261 temp64 = le64_to_cpu(chain_sg->address);
2262 chain_size = le32_to_cpu(cp->sg[0].length);
2263 dma_unmap_single(&h->pdev->dev, temp64, chain_size, DMA_TO_DEVICE);
2266 static int hpsa_map_sg_chain_block(struct ctlr_info *h,
2267 struct CommandList *c)
2269 struct SGDescriptor *chain_sg, *chain_block;
2273 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
2274 chain_block = h->cmd_sg_list[c->cmdindex];
2275 chain_sg->Ext = cpu_to_le32(HPSA_SG_CHAIN);
2276 chain_len = sizeof(*chain_sg) *
2277 (le16_to_cpu(c->Header.SGTotal) - h->max_cmd_sg_entries);
2278 chain_sg->Len = cpu_to_le32(chain_len);
2279 temp64 = dma_map_single(&h->pdev->dev, chain_block, chain_len,
2281 if (dma_mapping_error(&h->pdev->dev, temp64)) {
2282 /* prevent subsequent unmapping */
2283 chain_sg->Addr = cpu_to_le64(0);
2286 chain_sg->Addr = cpu_to_le64(temp64);
2290 static void hpsa_unmap_sg_chain_block(struct ctlr_info *h,
2291 struct CommandList *c)
2293 struct SGDescriptor *chain_sg;
2295 if (le16_to_cpu(c->Header.SGTotal) <= h->max_cmd_sg_entries)
2298 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
2299 dma_unmap_single(&h->pdev->dev, le64_to_cpu(chain_sg->Addr),
2300 le32_to_cpu(chain_sg->Len), DMA_TO_DEVICE);
2304 /* Decode the various types of errors on ioaccel2 path.
2305 * Return 1 for any error that should generate a RAID path retry.
2306 * Return 0 for errors that don't require a RAID path retry.
2308 static int handle_ioaccel_mode2_error(struct ctlr_info *h,
2309 struct CommandList *c,
2310 struct scsi_cmnd *cmd,
2311 struct io_accel2_cmd *c2,
2312 struct hpsa_scsi_dev_t *dev)
2316 u32 ioaccel2_resid = 0;
2318 switch (c2->error_data.serv_response) {
2319 case IOACCEL2_SERV_RESPONSE_COMPLETE:
2320 switch (c2->error_data.status) {
2321 case IOACCEL2_STATUS_SR_TASK_COMP_GOOD:
2323 case IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND:
2324 cmd->result |= SAM_STAT_CHECK_CONDITION;
2325 if (c2->error_data.data_present !=
2326 IOACCEL2_SENSE_DATA_PRESENT) {
2327 memset(cmd->sense_buffer, 0,
2328 SCSI_SENSE_BUFFERSIZE);
2331 /* copy the sense data */
2332 data_len = c2->error_data.sense_data_len;
2333 if (data_len > SCSI_SENSE_BUFFERSIZE)
2334 data_len = SCSI_SENSE_BUFFERSIZE;
2335 if (data_len > sizeof(c2->error_data.sense_data_buff))
2337 sizeof(c2->error_data.sense_data_buff);
2338 memcpy(cmd->sense_buffer,
2339 c2->error_data.sense_data_buff, data_len);
2342 case IOACCEL2_STATUS_SR_TASK_COMP_BUSY:
2345 case IOACCEL2_STATUS_SR_TASK_COMP_RES_CON:
2348 case IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL:
2351 case IOACCEL2_STATUS_SR_TASK_COMP_ABORTED:
2359 case IOACCEL2_SERV_RESPONSE_FAILURE:
2360 switch (c2->error_data.status) {
2361 case IOACCEL2_STATUS_SR_IO_ERROR:
2362 case IOACCEL2_STATUS_SR_IO_ABORTED:
2363 case IOACCEL2_STATUS_SR_OVERRUN:
2366 case IOACCEL2_STATUS_SR_UNDERRUN:
2367 cmd->result = (DID_OK << 16); /* host byte */
2368 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
2369 ioaccel2_resid = get_unaligned_le32(
2370 &c2->error_data.resid_cnt[0]);
2371 scsi_set_resid(cmd, ioaccel2_resid);
2373 case IOACCEL2_STATUS_SR_NO_PATH_TO_DEVICE:
2374 case IOACCEL2_STATUS_SR_INVALID_DEVICE:
2375 case IOACCEL2_STATUS_SR_IOACCEL_DISABLED:
2377 * Did an HBA disk disappear? We will eventually
2378 * get a state change event from the controller but
2379 * in the meantime, we need to tell the OS that the
2380 * HBA disk is no longer there and stop I/O
2381 * from going down. This allows the potential re-insert
2382 * of the disk to get the same device node.
2384 if (dev->physical_device && dev->expose_device) {
2385 cmd->result = DID_NO_CONNECT << 16;
2387 h->drv_req_rescan = 1;
2388 dev_warn(&h->pdev->dev,
2389 "%s: device is gone!\n", __func__);
2392 * Retry by sending down the RAID path.
2393 * We will get an event from ctlr to
2394 * trigger rescan regardless.
2402 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
2404 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
2406 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
2409 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
2416 return retry; /* retry on raid path? */
2419 static void hpsa_cmd_resolve_events(struct ctlr_info *h,
2420 struct CommandList *c)
2422 bool do_wake = false;
2425 * Reset c->scsi_cmd here so that the reset handler will know
2426 * this command has completed. Then, check to see if the handler is
2427 * waiting for this command, and, if so, wake it.
2429 c->scsi_cmd = SCSI_CMD_IDLE;
2430 mb(); /* Declare command idle before checking for pending events. */
2431 if (c->reset_pending) {
2432 unsigned long flags;
2433 struct hpsa_scsi_dev_t *dev;
2436 * There appears to be a reset pending; lock the lock and
2437 * reconfirm. If so, then decrement the count of outstanding
2438 * commands and wake the reset command if this is the last one.
2440 spin_lock_irqsave(&h->lock, flags);
2441 dev = c->reset_pending; /* Re-fetch under the lock. */
2442 if (dev && atomic_dec_and_test(&dev->reset_cmds_out))
2444 c->reset_pending = NULL;
2445 spin_unlock_irqrestore(&h->lock, flags);
2449 wake_up_all(&h->event_sync_wait_queue);
2452 static void hpsa_cmd_resolve_and_free(struct ctlr_info *h,
2453 struct CommandList *c)
2455 hpsa_cmd_resolve_events(h, c);
2456 cmd_tagged_free(h, c);
2459 static void hpsa_cmd_free_and_done(struct ctlr_info *h,
2460 struct CommandList *c, struct scsi_cmnd *cmd)
2462 hpsa_cmd_resolve_and_free(h, c);
2463 if (cmd && cmd->scsi_done)
2464 cmd->scsi_done(cmd);
2467 static void hpsa_retry_cmd(struct ctlr_info *h, struct CommandList *c)
2469 INIT_WORK(&c->work, hpsa_command_resubmit_worker);
2470 queue_work_on(raw_smp_processor_id(), h->resubmit_wq, &c->work);
2473 static void process_ioaccel2_completion(struct ctlr_info *h,
2474 struct CommandList *c, struct scsi_cmnd *cmd,
2475 struct hpsa_scsi_dev_t *dev)
2477 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
2479 /* check for good status */
2480 if (likely(c2->error_data.serv_response == 0 &&
2481 c2->error_data.status == 0))
2482 return hpsa_cmd_free_and_done(h, c, cmd);
2485 * Any RAID offload error results in retry which will use
2486 * the normal I/O path so the controller can handle whatever is
2489 if (is_logical_device(dev) &&
2490 c2->error_data.serv_response ==
2491 IOACCEL2_SERV_RESPONSE_FAILURE) {
2492 if (c2->error_data.status ==
2493 IOACCEL2_STATUS_SR_IOACCEL_DISABLED) {
2494 dev->offload_enabled = 0;
2495 dev->offload_to_be_enabled = 0;
2498 return hpsa_retry_cmd(h, c);
2501 if (handle_ioaccel_mode2_error(h, c, cmd, c2, dev))
2502 return hpsa_retry_cmd(h, c);
2504 return hpsa_cmd_free_and_done(h, c, cmd);
2507 /* Returns 0 on success, < 0 otherwise. */
2508 static int hpsa_evaluate_tmf_status(struct ctlr_info *h,
2509 struct CommandList *cp)
2511 u8 tmf_status = cp->err_info->ScsiStatus;
2513 switch (tmf_status) {
2514 case CISS_TMF_COMPLETE:
2516 * CISS_TMF_COMPLETE never happens, instead,
2517 * ei->CommandStatus == 0 for this case.
2519 case CISS_TMF_SUCCESS:
2521 case CISS_TMF_INVALID_FRAME:
2522 case CISS_TMF_NOT_SUPPORTED:
2523 case CISS_TMF_FAILED:
2524 case CISS_TMF_WRONG_LUN:
2525 case CISS_TMF_OVERLAPPED_TAG:
2528 dev_warn(&h->pdev->dev, "Unknown TMF status: 0x%02x\n",
2535 static void complete_scsi_command(struct CommandList *cp)
2537 struct scsi_cmnd *cmd;
2538 struct ctlr_info *h;
2539 struct ErrorInfo *ei;
2540 struct hpsa_scsi_dev_t *dev;
2541 struct io_accel2_cmd *c2;
2544 u8 asc; /* additional sense code */
2545 u8 ascq; /* additional sense code qualifier */
2546 unsigned long sense_data_size;
2553 cmd->result = DID_NO_CONNECT << 16;
2554 return hpsa_cmd_free_and_done(h, cp, cmd);
2557 dev = cmd->device->hostdata;
2559 cmd->result = DID_NO_CONNECT << 16;
2560 return hpsa_cmd_free_and_done(h, cp, cmd);
2562 c2 = &h->ioaccel2_cmd_pool[cp->cmdindex];
2564 scsi_dma_unmap(cmd); /* undo the DMA mappings */
2565 if ((cp->cmd_type == CMD_SCSI) &&
2566 (le16_to_cpu(cp->Header.SGTotal) > h->max_cmd_sg_entries))
2567 hpsa_unmap_sg_chain_block(h, cp);
2569 if ((cp->cmd_type == CMD_IOACCEL2) &&
2570 (c2->sg[0].chain_indicator == IOACCEL2_CHAIN))
2571 hpsa_unmap_ioaccel2_sg_chain_block(h, c2);
2573 cmd->result = (DID_OK << 16); /* host byte */
2574 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
2576 if (cp->cmd_type == CMD_IOACCEL2 || cp->cmd_type == CMD_IOACCEL1) {
2577 if (dev->physical_device && dev->expose_device &&
2579 cmd->result = DID_NO_CONNECT << 16;
2580 return hpsa_cmd_free_and_done(h, cp, cmd);
2582 if (likely(cp->phys_disk != NULL))
2583 atomic_dec(&cp->phys_disk->ioaccel_cmds_out);
2587 * We check for lockup status here as it may be set for
2588 * CMD_SCSI, CMD_IOACCEL1 and CMD_IOACCEL2 commands by
2589 * fail_all_oustanding_cmds()
2591 if (unlikely(ei->CommandStatus == CMD_CTLR_LOCKUP)) {
2592 /* DID_NO_CONNECT will prevent a retry */
2593 cmd->result = DID_NO_CONNECT << 16;
2594 return hpsa_cmd_free_and_done(h, cp, cmd);
2597 if ((unlikely(hpsa_is_pending_event(cp))))
2598 if (cp->reset_pending)
2599 return hpsa_cmd_free_and_done(h, cp, cmd);
2601 if (cp->cmd_type == CMD_IOACCEL2)
2602 return process_ioaccel2_completion(h, cp, cmd, dev);
2604 scsi_set_resid(cmd, ei->ResidualCnt);
2605 if (ei->CommandStatus == 0)
2606 return hpsa_cmd_free_and_done(h, cp, cmd);
2608 /* For I/O accelerator commands, copy over some fields to the normal
2609 * CISS header used below for error handling.
2611 if (cp->cmd_type == CMD_IOACCEL1) {
2612 struct io_accel1_cmd *c = &h->ioaccel_cmd_pool[cp->cmdindex];
2613 cp->Header.SGList = scsi_sg_count(cmd);
2614 cp->Header.SGTotal = cpu_to_le16(cp->Header.SGList);
2615 cp->Request.CDBLen = le16_to_cpu(c->io_flags) &
2616 IOACCEL1_IOFLAGS_CDBLEN_MASK;
2617 cp->Header.tag = c->tag;
2618 memcpy(cp->Header.LUN.LunAddrBytes, c->CISS_LUN, 8);
2619 memcpy(cp->Request.CDB, c->CDB, cp->Request.CDBLen);
2621 /* Any RAID offload error results in retry which will use
2622 * the normal I/O path so the controller can handle whatever's
2625 if (is_logical_device(dev)) {
2626 if (ei->CommandStatus == CMD_IOACCEL_DISABLED)
2627 dev->offload_enabled = 0;
2628 return hpsa_retry_cmd(h, cp);
2632 /* an error has occurred */
2633 switch (ei->CommandStatus) {
2635 case CMD_TARGET_STATUS:
2636 cmd->result |= ei->ScsiStatus;
2637 /* copy the sense data */
2638 if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo))
2639 sense_data_size = SCSI_SENSE_BUFFERSIZE;
2641 sense_data_size = sizeof(ei->SenseInfo);
2642 if (ei->SenseLen < sense_data_size)
2643 sense_data_size = ei->SenseLen;
2644 memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size);
2646 decode_sense_data(ei->SenseInfo, sense_data_size,
2647 &sense_key, &asc, &ascq);
2648 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
2649 if (sense_key == ABORTED_COMMAND) {
2650 cmd->result |= DID_SOFT_ERROR << 16;
2655 /* Problem was not a check condition
2656 * Pass it up to the upper layers...
2658 if (ei->ScsiStatus) {
2659 dev_warn(&h->pdev->dev, "cp %p has status 0x%x "
2660 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
2661 "Returning result: 0x%x\n",
2663 sense_key, asc, ascq,
2665 } else { /* scsi status is zero??? How??? */
2666 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. "
2667 "Returning no connection.\n", cp),
2669 /* Ordinarily, this case should never happen,
2670 * but there is a bug in some released firmware
2671 * revisions that allows it to happen if, for
2672 * example, a 4100 backplane loses power and
2673 * the tape drive is in it. We assume that
2674 * it's a fatal error of some kind because we
2675 * can't show that it wasn't. We will make it
2676 * look like selection timeout since that is
2677 * the most common reason for this to occur,
2678 * and it's severe enough.
2681 cmd->result = DID_NO_CONNECT << 16;
2685 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
2687 case CMD_DATA_OVERRUN:
2688 dev_warn(&h->pdev->dev,
2689 "CDB %16phN data overrun\n", cp->Request.CDB);
2692 /* print_bytes(cp, sizeof(*cp), 1, 0);
2694 /* We get CMD_INVALID if you address a non-existent device
2695 * instead of a selection timeout (no response). You will
2696 * see this if you yank out a drive, then try to access it.
2697 * This is kind of a shame because it means that any other
2698 * CMD_INVALID (e.g. driver bug) will get interpreted as a
2699 * missing target. */
2700 cmd->result = DID_NO_CONNECT << 16;
2703 case CMD_PROTOCOL_ERR:
2704 cmd->result = DID_ERROR << 16;
2705 dev_warn(&h->pdev->dev, "CDB %16phN : protocol error\n",
2708 case CMD_HARDWARE_ERR:
2709 cmd->result = DID_ERROR << 16;
2710 dev_warn(&h->pdev->dev, "CDB %16phN : hardware error\n",
2713 case CMD_CONNECTION_LOST:
2714 cmd->result = DID_ERROR << 16;
2715 dev_warn(&h->pdev->dev, "CDB %16phN : connection lost\n",
2719 cmd->result = DID_ABORT << 16;
2721 case CMD_ABORT_FAILED:
2722 cmd->result = DID_ERROR << 16;
2723 dev_warn(&h->pdev->dev, "CDB %16phN : abort failed\n",
2726 case CMD_UNSOLICITED_ABORT:
2727 cmd->result = DID_SOFT_ERROR << 16; /* retry the command */
2728 dev_warn(&h->pdev->dev, "CDB %16phN : unsolicited abort\n",
2732 cmd->result = DID_TIME_OUT << 16;
2733 dev_warn(&h->pdev->dev, "CDB %16phN timed out\n",
2736 case CMD_UNABORTABLE:
2737 cmd->result = DID_ERROR << 16;
2738 dev_warn(&h->pdev->dev, "Command unabortable\n");
2740 case CMD_TMF_STATUS:
2741 if (hpsa_evaluate_tmf_status(h, cp)) /* TMF failed? */
2742 cmd->result = DID_ERROR << 16;
2744 case CMD_IOACCEL_DISABLED:
2745 /* This only handles the direct pass-through case since RAID
2746 * offload is handled above. Just attempt a retry.
2748 cmd->result = DID_SOFT_ERROR << 16;
2749 dev_warn(&h->pdev->dev,
2750 "cp %p had HP SSD Smart Path error\n", cp);
2753 cmd->result = DID_ERROR << 16;
2754 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n",
2755 cp, ei->CommandStatus);
2758 return hpsa_cmd_free_and_done(h, cp, cmd);
2761 static void hpsa_pci_unmap(struct pci_dev *pdev, struct CommandList *c,
2762 int sg_used, enum dma_data_direction data_direction)
2766 for (i = 0; i < sg_used; i++)
2767 dma_unmap_single(&pdev->dev, le64_to_cpu(c->SG[i].Addr),
2768 le32_to_cpu(c->SG[i].Len),
2772 static int hpsa_map_one(struct pci_dev *pdev,
2773 struct CommandList *cp,
2776 enum dma_data_direction data_direction)
2780 if (buflen == 0 || data_direction == DMA_NONE) {
2781 cp->Header.SGList = 0;
2782 cp->Header.SGTotal = cpu_to_le16(0);
2786 addr64 = dma_map_single(&pdev->dev, buf, buflen, data_direction);
2787 if (dma_mapping_error(&pdev->dev, addr64)) {
2788 /* Prevent subsequent unmap of something never mapped */
2789 cp->Header.SGList = 0;
2790 cp->Header.SGTotal = cpu_to_le16(0);
2793 cp->SG[0].Addr = cpu_to_le64(addr64);
2794 cp->SG[0].Len = cpu_to_le32(buflen);
2795 cp->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* we are not chaining */
2796 cp->Header.SGList = 1; /* no. SGs contig in this cmd */
2797 cp->Header.SGTotal = cpu_to_le16(1); /* total sgs in cmd list */
2801 #define NO_TIMEOUT ((unsigned long) -1)
2802 #define DEFAULT_TIMEOUT 30000 /* milliseconds */
2803 static int hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h,
2804 struct CommandList *c, int reply_queue, unsigned long timeout_msecs)
2806 DECLARE_COMPLETION_ONSTACK(wait);
2809 __enqueue_cmd_and_start_io(h, c, reply_queue);
2810 if (timeout_msecs == NO_TIMEOUT) {
2811 /* TODO: get rid of this no-timeout thing */
2812 wait_for_completion_io(&wait);
2815 if (!wait_for_completion_io_timeout(&wait,
2816 msecs_to_jiffies(timeout_msecs))) {
2817 dev_warn(&h->pdev->dev, "Command timed out.\n");
2823 static int hpsa_scsi_do_simple_cmd(struct ctlr_info *h, struct CommandList *c,
2824 int reply_queue, unsigned long timeout_msecs)
2826 if (unlikely(lockup_detected(h))) {
2827 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
2830 return hpsa_scsi_do_simple_cmd_core(h, c, reply_queue, timeout_msecs);
2833 static u32 lockup_detected(struct ctlr_info *h)
2836 u32 rc, *lockup_detected;
2839 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
2840 rc = *lockup_detected;
2845 #define MAX_DRIVER_CMD_RETRIES 25
2846 static int hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
2847 struct CommandList *c, enum dma_data_direction data_direction,
2848 unsigned long timeout_msecs)
2850 int backoff_time = 10, retry_count = 0;
2854 memset(c->err_info, 0, sizeof(*c->err_info));
2855 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
2860 if (retry_count > 3) {
2861 msleep(backoff_time);
2862 if (backoff_time < 1000)
2865 } while ((check_for_unit_attention(h, c) ||
2866 check_for_busy(h, c)) &&
2867 retry_count <= MAX_DRIVER_CMD_RETRIES);
2868 hpsa_pci_unmap(h->pdev, c, 1, data_direction);
2869 if (retry_count > MAX_DRIVER_CMD_RETRIES)
2874 static void hpsa_print_cmd(struct ctlr_info *h, char *txt,
2875 struct CommandList *c)
2877 const u8 *cdb = c->Request.CDB;
2878 const u8 *lun = c->Header.LUN.LunAddrBytes;
2880 dev_warn(&h->pdev->dev, "%s: LUN:%8phN CDB:%16phN\n",
2884 static void hpsa_scsi_interpret_error(struct ctlr_info *h,
2885 struct CommandList *cp)
2887 const struct ErrorInfo *ei = cp->err_info;
2888 struct device *d = &cp->h->pdev->dev;
2889 u8 sense_key, asc, ascq;
2892 switch (ei->CommandStatus) {
2893 case CMD_TARGET_STATUS:
2894 if (ei->SenseLen > sizeof(ei->SenseInfo))
2895 sense_len = sizeof(ei->SenseInfo);
2897 sense_len = ei->SenseLen;
2898 decode_sense_data(ei->SenseInfo, sense_len,
2899 &sense_key, &asc, &ascq);
2900 hpsa_print_cmd(h, "SCSI status", cp);
2901 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION)
2902 dev_warn(d, "SCSI Status = 02, Sense key = 0x%02x, ASC = 0x%02x, ASCQ = 0x%02x\n",
2903 sense_key, asc, ascq);
2905 dev_warn(d, "SCSI Status = 0x%02x\n", ei->ScsiStatus);
2906 if (ei->ScsiStatus == 0)
2907 dev_warn(d, "SCSI status is abnormally zero. "
2908 "(probably indicates selection timeout "
2909 "reported incorrectly due to a known "
2910 "firmware bug, circa July, 2001.)\n");
2912 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
2914 case CMD_DATA_OVERRUN:
2915 hpsa_print_cmd(h, "overrun condition", cp);
2918 /* controller unfortunately reports SCSI passthru's
2919 * to non-existent targets as invalid commands.
2921 hpsa_print_cmd(h, "invalid command", cp);
2922 dev_warn(d, "probably means device no longer present\n");
2925 case CMD_PROTOCOL_ERR:
2926 hpsa_print_cmd(h, "protocol error", cp);
2928 case CMD_HARDWARE_ERR:
2929 hpsa_print_cmd(h, "hardware error", cp);
2931 case CMD_CONNECTION_LOST:
2932 hpsa_print_cmd(h, "connection lost", cp);
2935 hpsa_print_cmd(h, "aborted", cp);
2937 case CMD_ABORT_FAILED:
2938 hpsa_print_cmd(h, "abort failed", cp);
2940 case CMD_UNSOLICITED_ABORT:
2941 hpsa_print_cmd(h, "unsolicited abort", cp);
2944 hpsa_print_cmd(h, "timed out", cp);
2946 case CMD_UNABORTABLE:
2947 hpsa_print_cmd(h, "unabortable", cp);
2949 case CMD_CTLR_LOCKUP:
2950 hpsa_print_cmd(h, "controller lockup detected", cp);
2953 hpsa_print_cmd(h, "unknown status", cp);
2954 dev_warn(d, "Unknown command status %x\n",
2959 static int hpsa_do_receive_diagnostic(struct ctlr_info *h, u8 *scsi3addr,
2960 u8 page, u8 *buf, size_t bufsize)
2963 struct CommandList *c;
2964 struct ErrorInfo *ei;
2967 if (fill_cmd(c, RECEIVE_DIAGNOSTIC, h, buf, bufsize,
2968 page, scsi3addr, TYPE_CMD)) {
2972 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
2977 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
2978 hpsa_scsi_interpret_error(h, c);
2986 static u64 hpsa_get_enclosure_logical_identifier(struct ctlr_info *h,
2993 buf = kzalloc(1024, GFP_KERNEL);
2997 rc = hpsa_do_receive_diagnostic(h, scsi3addr, RECEIVE_DIAGNOSTIC,
3003 sa = get_unaligned_be64(buf+12);
3010 static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
3011 u16 page, unsigned char *buf,
3012 unsigned char bufsize)
3015 struct CommandList *c;
3016 struct ErrorInfo *ei;
3020 if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize,
3021 page, scsi3addr, TYPE_CMD)) {
3025 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3030 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3031 hpsa_scsi_interpret_error(h, c);
3039 static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr,
3040 u8 reset_type, int reply_queue)
3043 struct CommandList *c;
3044 struct ErrorInfo *ei;
3049 /* fill_cmd can't fail here, no data buffer to map. */
3050 (void) fill_cmd(c, reset_type, h, NULL, 0, 0,
3051 scsi3addr, TYPE_MSG);
3052 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
3054 dev_warn(&h->pdev->dev, "Failed to send reset command\n");
3057 /* no unmap needed here because no data xfer. */
3060 if (ei->CommandStatus != 0) {
3061 hpsa_scsi_interpret_error(h, c);
3069 static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c,
3070 struct hpsa_scsi_dev_t *dev,
3071 unsigned char *scsi3addr)
3075 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
3076 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
3078 if (hpsa_is_cmd_idle(c))
3081 switch (c->cmd_type) {
3083 case CMD_IOCTL_PEND:
3084 match = !memcmp(scsi3addr, &c->Header.LUN.LunAddrBytes,
3085 sizeof(c->Header.LUN.LunAddrBytes));
3090 if (c->phys_disk == dev) {
3091 /* HBA mode match */
3094 /* Possible RAID mode -- check each phys dev. */
3095 /* FIXME: Do we need to take out a lock here? If
3096 * so, we could just call hpsa_get_pdisk_of_ioaccel2()
3098 for (i = 0; i < dev->nphysical_disks && !match; i++) {
3099 /* FIXME: an alternate test might be
3101 * match = dev->phys_disk[i]->ioaccel_handle
3102 * == c2->scsi_nexus; */
3103 match = dev->phys_disk[i] == c->phys_disk;
3109 for (i = 0; i < dev->nphysical_disks && !match; i++) {
3110 match = dev->phys_disk[i]->ioaccel_handle ==
3111 le32_to_cpu(ac->it_nexus);
3115 case 0: /* The command is in the middle of being initialized. */
3120 dev_err(&h->pdev->dev, "unexpected cmd_type: %d\n",
3128 static int hpsa_do_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev,
3129 unsigned char *scsi3addr, u8 reset_type, int reply_queue)
3134 /* We can really only handle one reset at a time */
3135 if (mutex_lock_interruptible(&h->reset_mutex) == -EINTR) {
3136 dev_warn(&h->pdev->dev, "concurrent reset wait interrupted.\n");
3140 BUG_ON(atomic_read(&dev->reset_cmds_out) != 0);
3142 for (i = 0; i < h->nr_cmds; i++) {
3143 struct CommandList *c = h->cmd_pool + i;
3144 int refcount = atomic_inc_return(&c->refcount);
3146 if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev, scsi3addr)) {
3147 unsigned long flags;
3150 * Mark the target command as having a reset pending,
3151 * then lock a lock so that the command cannot complete
3152 * while we're considering it. If the command is not
3153 * idle then count it; otherwise revoke the event.
3155 c->reset_pending = dev;
3156 spin_lock_irqsave(&h->lock, flags); /* Implied MB */
3157 if (!hpsa_is_cmd_idle(c))
3158 atomic_inc(&dev->reset_cmds_out);
3160 c->reset_pending = NULL;
3161 spin_unlock_irqrestore(&h->lock, flags);
3167 rc = hpsa_send_reset(h, scsi3addr, reset_type, reply_queue);
3169 wait_event(h->event_sync_wait_queue,
3170 atomic_read(&dev->reset_cmds_out) == 0 ||
3171 lockup_detected(h));
3173 if (unlikely(lockup_detected(h))) {
3174 dev_warn(&h->pdev->dev,
3175 "Controller lockup detected during reset wait\n");
3180 atomic_set(&dev->reset_cmds_out, 0);
3182 rc = wait_for_device_to_become_ready(h, scsi3addr, 0);
3184 mutex_unlock(&h->reset_mutex);
3188 static void hpsa_get_raid_level(struct ctlr_info *h,
3189 unsigned char *scsi3addr, unsigned char *raid_level)
3194 *raid_level = RAID_UNKNOWN;
3195 buf = kzalloc(64, GFP_KERNEL);
3199 if (!hpsa_vpd_page_supported(h, scsi3addr,
3200 HPSA_VPD_LV_DEVICE_GEOMETRY))
3203 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE |
3204 HPSA_VPD_LV_DEVICE_GEOMETRY, buf, 64);
3207 *raid_level = buf[8];
3208 if (*raid_level > RAID_UNKNOWN)
3209 *raid_level = RAID_UNKNOWN;
3215 #define HPSA_MAP_DEBUG
3216 #ifdef HPSA_MAP_DEBUG
3217 static void hpsa_debug_map_buff(struct ctlr_info *h, int rc,
3218 struct raid_map_data *map_buff)
3220 struct raid_map_disk_data *dd = &map_buff->data[0];
3222 u16 map_cnt, row_cnt, disks_per_row;
3227 /* Show details only if debugging has been activated. */
3228 if (h->raid_offload_debug < 2)
3231 dev_info(&h->pdev->dev, "structure_size = %u\n",
3232 le32_to_cpu(map_buff->structure_size));
3233 dev_info(&h->pdev->dev, "volume_blk_size = %u\n",
3234 le32_to_cpu(map_buff->volume_blk_size));
3235 dev_info(&h->pdev->dev, "volume_blk_cnt = 0x%llx\n",
3236 le64_to_cpu(map_buff->volume_blk_cnt));
3237 dev_info(&h->pdev->dev, "physicalBlockShift = %u\n",
3238 map_buff->phys_blk_shift);
3239 dev_info(&h->pdev->dev, "parity_rotation_shift = %u\n",
3240 map_buff->parity_rotation_shift);
3241 dev_info(&h->pdev->dev, "strip_size = %u\n",
3242 le16_to_cpu(map_buff->strip_size));
3243 dev_info(&h->pdev->dev, "disk_starting_blk = 0x%llx\n",
3244 le64_to_cpu(map_buff->disk_starting_blk));
3245 dev_info(&h->pdev->dev, "disk_blk_cnt = 0x%llx\n",
3246 le64_to_cpu(map_buff->disk_blk_cnt));
3247 dev_info(&h->pdev->dev, "data_disks_per_row = %u\n",
3248 le16_to_cpu(map_buff->data_disks_per_row));
3249 dev_info(&h->pdev->dev, "metadata_disks_per_row = %u\n",
3250 le16_to_cpu(map_buff->metadata_disks_per_row));
3251 dev_info(&h->pdev->dev, "row_cnt = %u\n",
3252 le16_to_cpu(map_buff->row_cnt));
3253 dev_info(&h->pdev->dev, "layout_map_count = %u\n",
3254 le16_to_cpu(map_buff->layout_map_count));
3255 dev_info(&h->pdev->dev, "flags = 0x%x\n",
3256 le16_to_cpu(map_buff->flags));
3257 dev_info(&h->pdev->dev, "encryption = %s\n",
3258 le16_to_cpu(map_buff->flags) &
3259 RAID_MAP_FLAG_ENCRYPT_ON ? "ON" : "OFF");
3260 dev_info(&h->pdev->dev, "dekindex = %u\n",
3261 le16_to_cpu(map_buff->dekindex));
3262 map_cnt = le16_to_cpu(map_buff->layout_map_count);
3263 for (map = 0; map < map_cnt; map++) {
3264 dev_info(&h->pdev->dev, "Map%u:\n", map);
3265 row_cnt = le16_to_cpu(map_buff->row_cnt);
3266 for (row = 0; row < row_cnt; row++) {
3267 dev_info(&h->pdev->dev, " Row%u:\n", row);
3269 le16_to_cpu(map_buff->data_disks_per_row);
3270 for (col = 0; col < disks_per_row; col++, dd++)
3271 dev_info(&h->pdev->dev,
3272 " D%02u: h=0x%04x xor=%u,%u\n",
3273 col, dd->ioaccel_handle,
3274 dd->xor_mult[0], dd->xor_mult[1]);
3276 le16_to_cpu(map_buff->metadata_disks_per_row);
3277 for (col = 0; col < disks_per_row; col++, dd++)
3278 dev_info(&h->pdev->dev,
3279 " M%02u: h=0x%04x xor=%u,%u\n",
3280 col, dd->ioaccel_handle,
3281 dd->xor_mult[0], dd->xor_mult[1]);
3286 static void hpsa_debug_map_buff(__attribute__((unused)) struct ctlr_info *h,
3287 __attribute__((unused)) int rc,
3288 __attribute__((unused)) struct raid_map_data *map_buff)
3293 static int hpsa_get_raid_map(struct ctlr_info *h,
3294 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
3297 struct CommandList *c;
3298 struct ErrorInfo *ei;
3302 if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map,
3303 sizeof(this_device->raid_map), 0,
3304 scsi3addr, TYPE_CMD)) {
3305 dev_warn(&h->pdev->dev, "hpsa_get_raid_map fill_cmd failed\n");
3309 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3314 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3315 hpsa_scsi_interpret_error(h, c);
3321 /* @todo in the future, dynamically allocate RAID map memory */
3322 if (le32_to_cpu(this_device->raid_map.structure_size) >
3323 sizeof(this_device->raid_map)) {
3324 dev_warn(&h->pdev->dev, "RAID map size is too large!\n");
3327 hpsa_debug_map_buff(h, rc, &this_device->raid_map);
3334 static int hpsa_bmic_sense_subsystem_information(struct ctlr_info *h,
3335 unsigned char scsi3addr[], u16 bmic_device_index,
3336 struct bmic_sense_subsystem_info *buf, size_t bufsize)
3339 struct CommandList *c;
3340 struct ErrorInfo *ei;
3344 rc = fill_cmd(c, BMIC_SENSE_SUBSYSTEM_INFORMATION, h, buf, bufsize,
3345 0, RAID_CTLR_LUNID, TYPE_CMD);
3349 c->Request.CDB[2] = bmic_device_index & 0xff;
3350 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;
3352 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3357 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3358 hpsa_scsi_interpret_error(h, c);
3366 static int hpsa_bmic_id_controller(struct ctlr_info *h,
3367 struct bmic_identify_controller *buf, size_t bufsize)
3370 struct CommandList *c;
3371 struct ErrorInfo *ei;
3375 rc = fill_cmd(c, BMIC_IDENTIFY_CONTROLLER, h, buf, bufsize,
3376 0, RAID_CTLR_LUNID, TYPE_CMD);
3380 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3385 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3386 hpsa_scsi_interpret_error(h, c);
3394 static int hpsa_bmic_id_physical_device(struct ctlr_info *h,
3395 unsigned char scsi3addr[], u16 bmic_device_index,
3396 struct bmic_identify_physical_device *buf, size_t bufsize)
3399 struct CommandList *c;
3400 struct ErrorInfo *ei;
3403 rc = fill_cmd(c, BMIC_IDENTIFY_PHYSICAL_DEVICE, h, buf, bufsize,
3404 0, RAID_CTLR_LUNID, TYPE_CMD);
3408 c->Request.CDB[2] = bmic_device_index & 0xff;
3409 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;
3411 hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3414 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3415 hpsa_scsi_interpret_error(h, c);
3425 * get enclosure information
3426 * struct ReportExtendedLUNdata *rlep - Used for BMIC drive number
3427 * struct hpsa_scsi_dev_t *encl_dev - device entry for enclosure
3428 * Uses id_physical_device to determine the box_index.
3430 static void hpsa_get_enclosure_info(struct ctlr_info *h,
3431 unsigned char *scsi3addr,
3432 struct ReportExtendedLUNdata *rlep, int rle_index,
3433 struct hpsa_scsi_dev_t *encl_dev)
3436 struct CommandList *c = NULL;
3437 struct ErrorInfo *ei = NULL;
3438 struct bmic_sense_storage_box_params *bssbp = NULL;
3439 struct bmic_identify_physical_device *id_phys = NULL;
3440 struct ext_report_lun_entry *rle = &rlep->LUN[rle_index];
3441 u16 bmic_device_index = 0;
3444 hpsa_get_enclosure_logical_identifier(h, scsi3addr);
3446 bmic_device_index = GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]);
3448 if (encl_dev->target == -1 || encl_dev->lun == -1) {
3453 if (bmic_device_index == 0xFF00 || MASKED_DEVICE(&rle->lunid[0])) {
3458 bssbp = kzalloc(sizeof(*bssbp), GFP_KERNEL);
3462 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
3466 rc = hpsa_bmic_id_physical_device(h, scsi3addr, bmic_device_index,
3467 id_phys, sizeof(*id_phys));
3469 dev_warn(&h->pdev->dev, "%s: id_phys failed %d bdi[0x%x]\n",
3470 __func__, encl_dev->external, bmic_device_index);
3476 rc = fill_cmd(c, BMIC_SENSE_STORAGE_BOX_PARAMS, h, bssbp,
3477 sizeof(*bssbp), 0, RAID_CTLR_LUNID, TYPE_CMD);
3482 if (id_phys->phys_connector[1] == 'E')
3483 c->Request.CDB[5] = id_phys->box_index;
3485 c->Request.CDB[5] = 0;
3487 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3493 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3498 encl_dev->box[id_phys->active_path_number] = bssbp->phys_box_on_port;
3499 memcpy(&encl_dev->phys_connector[id_phys->active_path_number],
3500 bssbp->phys_connector, sizeof(bssbp->phys_connector));
3511 hpsa_show_dev_msg(KERN_INFO, h, encl_dev,
3512 "Error, could not get enclosure information");
3515 static u64 hpsa_get_sas_address_from_report_physical(struct ctlr_info *h,
3516 unsigned char *scsi3addr)
3518 struct ReportExtendedLUNdata *physdev;
3523 physdev = kzalloc(sizeof(*physdev), GFP_KERNEL);
3527 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
3528 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
3532 nphysicals = get_unaligned_be32(physdev->LUNListLength) / 24;
3534 for (i = 0; i < nphysicals; i++)
3535 if (!memcmp(&physdev->LUN[i].lunid[0], scsi3addr, 8)) {
3536 sa = get_unaligned_be64(&physdev->LUN[i].wwid[0]);
3545 static void hpsa_get_sas_address(struct ctlr_info *h, unsigned char *scsi3addr,
3546 struct hpsa_scsi_dev_t *dev)
3551 if (is_hba_lunid(scsi3addr)) {
3552 struct bmic_sense_subsystem_info *ssi;
3554 ssi = kzalloc(sizeof(*ssi), GFP_KERNEL);
3558 rc = hpsa_bmic_sense_subsystem_information(h,
3559 scsi3addr, 0, ssi, sizeof(*ssi));
3561 sa = get_unaligned_be64(ssi->primary_world_wide_id);
3562 h->sas_address = sa;
3567 sa = hpsa_get_sas_address_from_report_physical(h, scsi3addr);
3569 dev->sas_address = sa;
3572 static void hpsa_ext_ctrl_present(struct ctlr_info *h,
3573 struct ReportExtendedLUNdata *physdev)
3578 if (h->discovery_polling)
3581 nphysicals = (get_unaligned_be32(physdev->LUNListLength) / 24) + 1;
3583 for (i = 0; i < nphysicals; i++) {
3584 if (physdev->LUN[i].device_type ==
3585 BMIC_DEVICE_TYPE_CONTROLLER
3586 && !is_hba_lunid(physdev->LUN[i].lunid)) {
3587 dev_info(&h->pdev->dev,
3588 "External controller present, activate discovery polling and disable rld caching\n");
3589 hpsa_disable_rld_caching(h);
3590 h->discovery_polling = 1;
3596 /* Get a device id from inquiry page 0x83 */
3597 static bool hpsa_vpd_page_supported(struct ctlr_info *h,
3598 unsigned char scsi3addr[], u8 page)
3603 unsigned char *buf, bufsize;
3605 buf = kzalloc(256, GFP_KERNEL);
3609 /* Get the size of the page list first */
3610 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3611 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3612 buf, HPSA_VPD_HEADER_SZ);
3614 goto exit_unsupported;
3616 if ((pages + HPSA_VPD_HEADER_SZ) <= 255)
3617 bufsize = pages + HPSA_VPD_HEADER_SZ;
3621 /* Get the whole VPD page list */
3622 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3623 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3626 goto exit_unsupported;
3629 for (i = 1; i <= pages; i++)
3630 if (buf[3 + i] == page)
3631 goto exit_supported;
3641 * Called during a scan operation.
3642 * Sets ioaccel status on the new device list, not the existing device list
3644 * The device list used during I/O will be updated later in
3645 * adjust_hpsa_scsi_table.
3647 static void hpsa_get_ioaccel_status(struct ctlr_info *h,
3648 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
3654 this_device->offload_config = 0;
3655 this_device->offload_enabled = 0;
3656 this_device->offload_to_be_enabled = 0;
3658 buf = kzalloc(64, GFP_KERNEL);
3661 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_IOACCEL_STATUS))
3663 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3664 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, buf, 64);
3668 #define IOACCEL_STATUS_BYTE 4
3669 #define OFFLOAD_CONFIGURED_BIT 0x01
3670 #define OFFLOAD_ENABLED_BIT 0x02
3671 ioaccel_status = buf[IOACCEL_STATUS_BYTE];
3672 this_device->offload_config =
3673 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT);
3674 if (this_device->offload_config) {
3675 this_device->offload_to_be_enabled =
3676 !!(ioaccel_status & OFFLOAD_ENABLED_BIT);
3677 if (hpsa_get_raid_map(h, scsi3addr, this_device))
3678 this_device->offload_to_be_enabled = 0;
3686 /* Get the device id from inquiry page 0x83 */
3687 static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr,
3688 unsigned char *device_id, int index, int buflen)
3693 /* Does controller have VPD for device id? */
3694 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_DEVICE_ID))
3695 return 1; /* not supported */
3697 buf = kzalloc(64, GFP_KERNEL);
3701 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE |
3702 HPSA_VPD_LV_DEVICE_ID, buf, 64);
3706 memcpy(device_id, &buf[8], buflen);
3711 return rc; /*0 - got id, otherwise, didn't */
3714 static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
3715 void *buf, int bufsize,
3716 int extended_response)
3719 struct CommandList *c;
3720 unsigned char scsi3addr[8];
3721 struct ErrorInfo *ei;
3725 /* address the controller */
3726 memset(scsi3addr, 0, sizeof(scsi3addr));
3727 if (fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h,
3728 buf, bufsize, 0, scsi3addr, TYPE_CMD)) {
3732 if (extended_response)
3733 c->Request.CDB[1] = extended_response;
3734 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
3739 if (ei->CommandStatus != 0 &&
3740 ei->CommandStatus != CMD_DATA_UNDERRUN) {
3741 hpsa_scsi_interpret_error(h, c);
3744 struct ReportLUNdata *rld = buf;
3746 if (rld->extended_response_flag != extended_response) {
3747 if (!h->legacy_board) {
3748 dev_err(&h->pdev->dev,
3749 "report luns requested format %u, got %u\n",
3751 rld->extended_response_flag);
3762 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
3763 struct ReportExtendedLUNdata *buf, int bufsize)
3766 struct ReportLUNdata *lbuf;
3768 rc = hpsa_scsi_do_report_luns(h, 0, buf, bufsize,
3769 HPSA_REPORT_PHYS_EXTENDED);
3770 if (!rc || rc != -EOPNOTSUPP)
3773 /* REPORT PHYS EXTENDED is not supported */
3774 lbuf = kzalloc(sizeof(*lbuf), GFP_KERNEL);
3778 rc = hpsa_scsi_do_report_luns(h, 0, lbuf, sizeof(*lbuf), 0);
3783 /* Copy ReportLUNdata header */
3784 memcpy(buf, lbuf, 8);
3785 nphys = be32_to_cpu(*((__be32 *)lbuf->LUNListLength)) / 8;
3786 for (i = 0; i < nphys; i++)
3787 memcpy(buf->LUN[i].lunid, lbuf->LUN[i], 8);
3793 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,
3794 struct ReportLUNdata *buf, int bufsize)
3796 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0);
3799 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device,
3800 int bus, int target, int lun)
3803 device->target = target;
3807 /* Use VPD inquiry to get details of volume status */
3808 static int hpsa_get_volume_status(struct ctlr_info *h,
3809 unsigned char scsi3addr[])
3816 buf = kzalloc(64, GFP_KERNEL);
3818 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3820 /* Does controller have VPD for logical volume status? */
3821 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_STATUS))
3824 /* Get the size of the VPD return buffer */
3825 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3826 buf, HPSA_VPD_HEADER_SZ);
3831 /* Now get the whole VPD buffer */
3832 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3833 buf, size + HPSA_VPD_HEADER_SZ);
3836 status = buf[4]; /* status byte */
3842 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3845 /* Determine offline status of a volume.
3848 * 0xff (offline for unknown reasons)
3849 * # (integer code indicating one of several NOT READY states
3850 * describing why a volume is to be kept offline)
3852 static unsigned char hpsa_volume_offline(struct ctlr_info *h,
3853 unsigned char scsi3addr[])
3855 struct CommandList *c;
3856 unsigned char *sense;
3857 u8 sense_key, asc, ascq;
3862 #define ASC_LUN_NOT_READY 0x04
3863 #define ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS 0x04
3864 #define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02
3868 (void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD);
3869 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
3873 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3875 sense = c->err_info->SenseInfo;
3876 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
3877 sense_len = sizeof(c->err_info->SenseInfo);
3879 sense_len = c->err_info->SenseLen;
3880 decode_sense_data(sense, sense_len, &sense_key, &asc, &ascq);
3881 cmd_status = c->err_info->CommandStatus;
3882 scsi_status = c->err_info->ScsiStatus;
3885 /* Determine the reason for not ready state */
3886 ldstat = hpsa_get_volume_status(h, scsi3addr);
3888 /* Keep volume offline in certain cases: */
3890 case HPSA_LV_FAILED:
3891 case HPSA_LV_UNDERGOING_ERASE:
3892 case HPSA_LV_NOT_AVAILABLE:
3893 case HPSA_LV_UNDERGOING_RPI:
3894 case HPSA_LV_PENDING_RPI:
3895 case HPSA_LV_ENCRYPTED_NO_KEY:
3896 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
3897 case HPSA_LV_UNDERGOING_ENCRYPTION:
3898 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
3899 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
3901 case HPSA_VPD_LV_STATUS_UNSUPPORTED:
3902 /* If VPD status page isn't available,
3903 * use ASC/ASCQ to determine state
3905 if ((ascq == ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS) ||
3906 (ascq == ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ))
3915 static int hpsa_update_device_info(struct ctlr_info *h,
3916 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device,
3917 unsigned char *is_OBDR_device)
3920 #define OBDR_SIG_OFFSET 43
3921 #define OBDR_TAPE_SIG "$DR-10"
3922 #define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1)
3923 #define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN)
3925 unsigned char *inq_buff;
3926 unsigned char *obdr_sig;
3929 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
3935 /* Do an inquiry to the device to see what it is. */
3936 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
3937 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
3938 dev_err(&h->pdev->dev,
3939 "%s: inquiry failed, device will be skipped.\n",
3941 rc = HPSA_INQUIRY_FAILED;
3945 scsi_sanitize_inquiry_string(&inq_buff[8], 8);
3946 scsi_sanitize_inquiry_string(&inq_buff[16], 16);
3948 this_device->devtype = (inq_buff[0] & 0x1f);
3949 memcpy(this_device->scsi3addr, scsi3addr, 8);
3950 memcpy(this_device->vendor, &inq_buff[8],
3951 sizeof(this_device->vendor));
3952 memcpy(this_device->model, &inq_buff[16],
3953 sizeof(this_device->model));
3954 this_device->rev = inq_buff[2];
3955 memset(this_device->device_id, 0,
3956 sizeof(this_device->device_id));
3957 if (hpsa_get_device_id(h, scsi3addr, this_device->device_id, 8,
3958 sizeof(this_device->device_id)) < 0)
3959 dev_err(&h->pdev->dev,
3960 "hpsa%d: %s: can't get device id for host %d:C0:T%d:L%d\t%s\t%.16s\n",
3962 h->scsi_host->host_no,
3963 this_device->target, this_device->lun,
3964 scsi_device_type(this_device->devtype),
3965 this_device->model);
3967 if ((this_device->devtype == TYPE_DISK ||
3968 this_device->devtype == TYPE_ZBC) &&
3969 is_logical_dev_addr_mode(scsi3addr)) {
3970 unsigned char volume_offline;
3972 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level);
3973 if (h->fw_support & MISC_FW_RAID_OFFLOAD_BASIC)
3974 hpsa_get_ioaccel_status(h, scsi3addr, this_device);
3975 volume_offline = hpsa_volume_offline(h, scsi3addr);
3976 if (volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED &&
3979 * Legacy boards might not support volume status
3981 dev_info(&h->pdev->dev,
3982 "C0:T%d:L%d Volume status not available, assuming online.\n",
3983 this_device->target, this_device->lun);
3986 this_device->volume_offline = volume_offline;
3987 if (volume_offline == HPSA_LV_FAILED) {
3988 rc = HPSA_LV_FAILED;
3989 dev_err(&h->pdev->dev,
3990 "%s: LV failed, device will be skipped.\n",
3995 this_device->raid_level = RAID_UNKNOWN;
3996 this_device->offload_config = 0;
3997 this_device->offload_enabled = 0;
3998 this_device->offload_to_be_enabled = 0;
3999 this_device->hba_ioaccel_enabled = 0;
4000 this_device->volume_offline = 0;
4001 this_device->queue_depth = h->nr_cmds;
4004 if (this_device->external)
4005 this_device->queue_depth = EXTERNAL_QD;
4007 if (is_OBDR_device) {
4008 /* See if this is a One-Button-Disaster-Recovery device
4009 * by looking for "$DR-10" at offset 43 in inquiry data.
4011 obdr_sig = &inq_buff[OBDR_SIG_OFFSET];
4012 *is_OBDR_device = (this_device->devtype == TYPE_ROM &&
4013 strncmp(obdr_sig, OBDR_TAPE_SIG,
4014 OBDR_SIG_LEN) == 0);
4025 * Helper function to assign bus, target, lun mapping of devices.
4026 * Logical drive target and lun are assigned at this time, but
4027 * physical device lun and target assignment are deferred (assigned
4028 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
4030 static void figure_bus_target_lun(struct ctlr_info *h,
4031 u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device)
4033 u32 lunid = get_unaligned_le32(lunaddrbytes);
4035 if (!is_logical_dev_addr_mode(lunaddrbytes)) {
4036 /* physical device, target and lun filled in later */
4037 if (is_hba_lunid(lunaddrbytes)) {
4038 int bus = HPSA_HBA_BUS;
4041 bus = HPSA_LEGACY_HBA_BUS;
4042 hpsa_set_bus_target_lun(device,
4043 bus, 0, lunid & 0x3fff);
4045 /* defer target, lun assignment for physical devices */
4046 hpsa_set_bus_target_lun(device,
4047 HPSA_PHYSICAL_DEVICE_BUS, -1, -1);
4050 /* It's a logical device */
4051 if (device->external) {
4052 hpsa_set_bus_target_lun(device,
4053 HPSA_EXTERNAL_RAID_VOLUME_BUS, (lunid >> 16) & 0x3fff,
4057 hpsa_set_bus_target_lun(device, HPSA_RAID_VOLUME_BUS,
4061 static int figure_external_status(struct ctlr_info *h, int raid_ctlr_position,
4062 int i, int nphysicals, int nlocal_logicals)
4064 /* In report logicals, local logicals are listed first,
4065 * then any externals.
4067 int logicals_start = nphysicals + (raid_ctlr_position == 0);
4069 if (i == raid_ctlr_position)
4072 if (i < logicals_start)
4075 /* i is in logicals range, but still within local logicals */
4076 if ((i - nphysicals - (raid_ctlr_position == 0)) < nlocal_logicals)
4079 return 1; /* it's an external lun */
4083 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
4084 * logdev. The number of luns in physdev and logdev are returned in
4085 * *nphysicals and *nlogicals, respectively.
4086 * Returns 0 on success, -1 otherwise.
4088 static int hpsa_gather_lun_info(struct ctlr_info *h,
4089 struct ReportExtendedLUNdata *physdev, u32 *nphysicals,
4090 struct ReportLUNdata *logdev, u32 *nlogicals)
4092 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
4093 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
4096 *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 24;
4097 if (*nphysicals > HPSA_MAX_PHYS_LUN) {
4098 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded. %d LUNs ignored.\n",
4099 HPSA_MAX_PHYS_LUN, *nphysicals - HPSA_MAX_PHYS_LUN);
4100 *nphysicals = HPSA_MAX_PHYS_LUN;
4102 if (hpsa_scsi_do_report_log_luns(h, logdev, sizeof(*logdev))) {
4103 dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
4106 *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8;
4107 /* Reject Logicals in excess of our max capability. */
4108 if (*nlogicals > HPSA_MAX_LUN) {
4109 dev_warn(&h->pdev->dev,
4110 "maximum logical LUNs (%d) exceeded. "
4111 "%d LUNs ignored.\n", HPSA_MAX_LUN,
4112 *nlogicals - HPSA_MAX_LUN);
4113 *nlogicals = HPSA_MAX_LUN;
4115 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) {
4116 dev_warn(&h->pdev->dev,
4117 "maximum logical + physical LUNs (%d) exceeded. "
4118 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
4119 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN);
4120 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals;
4125 static u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position,
4126 int i, int nphysicals, int nlogicals,
4127 struct ReportExtendedLUNdata *physdev_list,
4128 struct ReportLUNdata *logdev_list)
4130 /* Helper function, figure out where the LUN ID info is coming from
4131 * given index i, lists of physical and logical devices, where in
4132 * the list the raid controller is supposed to appear (first or last)
4135 int logicals_start = nphysicals + (raid_ctlr_position == 0);
4136 int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0);
4138 if (i == raid_ctlr_position)
4139 return RAID_CTLR_LUNID;
4141 if (i < logicals_start)
4142 return &physdev_list->LUN[i -
4143 (raid_ctlr_position == 0)].lunid[0];
4145 if (i < last_device)
4146 return &logdev_list->LUN[i - nphysicals -
4147 (raid_ctlr_position == 0)][0];
4152 /* get physical drive ioaccel handle and queue depth */
4153 static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h,
4154 struct hpsa_scsi_dev_t *dev,
4155 struct ReportExtendedLUNdata *rlep, int rle_index,
4156 struct bmic_identify_physical_device *id_phys)
4159 struct ext_report_lun_entry *rle;
4161 rle = &rlep->LUN[rle_index];
4163 dev->ioaccel_handle = rle->ioaccel_handle;
4164 if ((rle->device_flags & 0x08) && dev->ioaccel_handle)
4165 dev->hba_ioaccel_enabled = 1;
4166 memset(id_phys, 0, sizeof(*id_phys));
4167 rc = hpsa_bmic_id_physical_device(h, &rle->lunid[0],
4168 GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]), id_phys,
4171 /* Reserve space for FW operations */
4172 #define DRIVE_CMDS_RESERVED_FOR_FW 2
4173 #define DRIVE_QUEUE_DEPTH 7
4175 le16_to_cpu(id_phys->current_queue_depth_limit) -
4176 DRIVE_CMDS_RESERVED_FOR_FW;
4178 dev->queue_depth = DRIVE_QUEUE_DEPTH; /* conservative */
4181 static void hpsa_get_path_info(struct hpsa_scsi_dev_t *this_device,
4182 struct ReportExtendedLUNdata *rlep, int rle_index,
4183 struct bmic_identify_physical_device *id_phys)
4185 struct ext_report_lun_entry *rle = &rlep->LUN[rle_index];
4187 if ((rle->device_flags & 0x08) && this_device->ioaccel_handle)
4188 this_device->hba_ioaccel_enabled = 1;
4190 memcpy(&this_device->active_path_index,
4191 &id_phys->active_path_number,
4192 sizeof(this_device->active_path_index));
4193 memcpy(&this_device->path_map,
4194 &id_phys->redundant_path_present_map,
4195 sizeof(this_device->path_map));
4196 memcpy(&this_device->box,
4197 &id_phys->alternate_paths_phys_box_on_port,
4198 sizeof(this_device->box));
4199 memcpy(&this_device->phys_connector,
4200 &id_phys->alternate_paths_phys_connector,
4201 sizeof(this_device->phys_connector));
4202 memcpy(&this_device->bay,
4203 &id_phys->phys_bay_in_box,
4204 sizeof(this_device->bay));
4207 /* get number of local logical disks. */
4208 static int hpsa_set_local_logical_count(struct ctlr_info *h,
4209 struct bmic_identify_controller *id_ctlr,
4215 dev_warn(&h->pdev->dev, "%s: id_ctlr buffer is NULL.\n",
4219 memset(id_ctlr, 0, sizeof(*id_ctlr));
4220 rc = hpsa_bmic_id_controller(h, id_ctlr, sizeof(*id_ctlr));
4222 if (id_ctlr->configured_logical_drive_count < 255)
4223 *nlocals = id_ctlr->configured_logical_drive_count;
4225 *nlocals = le16_to_cpu(
4226 id_ctlr->extended_logical_unit_count);
4232 static bool hpsa_is_disk_spare(struct ctlr_info *h, u8 *lunaddrbytes)
4234 struct bmic_identify_physical_device *id_phys;
4235 bool is_spare = false;
4238 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
4242 rc = hpsa_bmic_id_physical_device(h,
4244 GET_BMIC_DRIVE_NUMBER(lunaddrbytes),
4245 id_phys, sizeof(*id_phys));
4247 is_spare = (id_phys->more_flags >> 6) & 0x01;
4253 #define RPL_DEV_FLAG_NON_DISK 0x1
4254 #define RPL_DEV_FLAG_UNCONFIG_DISK_REPORTING_SUPPORTED 0x2
4255 #define RPL_DEV_FLAG_UNCONFIG_DISK 0x4
4257 #define BMIC_DEVICE_TYPE_ENCLOSURE 6
4259 static bool hpsa_skip_device(struct ctlr_info *h, u8 *lunaddrbytes,
4260 struct ext_report_lun_entry *rle)
4265 if (!MASKED_DEVICE(lunaddrbytes))
4268 device_flags = rle->device_flags;
4269 device_type = rle->device_type;
4271 if (device_flags & RPL_DEV_FLAG_NON_DISK) {
4272 if (device_type == BMIC_DEVICE_TYPE_ENCLOSURE)
4277 if (!(device_flags & RPL_DEV_FLAG_UNCONFIG_DISK_REPORTING_SUPPORTED))
4280 if (device_flags & RPL_DEV_FLAG_UNCONFIG_DISK)
4284 * Spares may be spun down, we do not want to
4285 * do an Inquiry to a RAID set spare drive as
4286 * that would have them spun up, that is a
4287 * performance hit because I/O to the RAID device
4288 * stops while the spin up occurs which can take
4291 if (hpsa_is_disk_spare(h, lunaddrbytes))
4297 static void hpsa_update_scsi_devices(struct ctlr_info *h)
4299 /* the idea here is we could get notified
4300 * that some devices have changed, so we do a report
4301 * physical luns and report logical luns cmd, and adjust
4302 * our list of devices accordingly.
4304 * The scsi3addr's of devices won't change so long as the
4305 * adapter is not reset. That means we can rescan and
4306 * tell which devices we already know about, vs. new
4307 * devices, vs. disappearing devices.
4309 struct ReportExtendedLUNdata *physdev_list = NULL;
4310 struct ReportLUNdata *logdev_list = NULL;
4311 struct bmic_identify_physical_device *id_phys = NULL;
4312 struct bmic_identify_controller *id_ctlr = NULL;
4315 u32 nlocal_logicals = 0;
4316 u32 ndev_allocated = 0;
4317 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
4319 int i, n_ext_target_devs, ndevs_to_allocate;
4320 int raid_ctlr_position;
4321 bool physical_device;
4322 DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS);
4324 currentsd = kcalloc(HPSA_MAX_DEVICES, sizeof(*currentsd), GFP_KERNEL);
4325 physdev_list = kzalloc(sizeof(*physdev_list), GFP_KERNEL);
4326 logdev_list = kzalloc(sizeof(*logdev_list), GFP_KERNEL);
4327 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL);
4328 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
4329 id_ctlr = kzalloc(sizeof(*id_ctlr), GFP_KERNEL);
4331 if (!currentsd || !physdev_list || !logdev_list ||
4332 !tmpdevice || !id_phys || !id_ctlr) {
4333 dev_err(&h->pdev->dev, "out of memory\n");
4336 memset(lunzerobits, 0, sizeof(lunzerobits));
4338 h->drv_req_rescan = 0; /* cancel scheduled rescan - we're doing it. */
4340 if (hpsa_gather_lun_info(h, physdev_list, &nphysicals,
4341 logdev_list, &nlogicals)) {
4342 h->drv_req_rescan = 1;
4346 /* Set number of local logicals (non PTRAID) */
4347 if (hpsa_set_local_logical_count(h, id_ctlr, &nlocal_logicals)) {
4348 dev_warn(&h->pdev->dev,
4349 "%s: Can't determine number of local logical devices.\n",
4353 /* We might see up to the maximum number of logical and physical disks
4354 * plus external target devices, and a device for the local RAID
4357 ndevs_to_allocate = nphysicals + nlogicals + MAX_EXT_TARGETS + 1;
4359 hpsa_ext_ctrl_present(h, physdev_list);
4361 /* Allocate the per device structures */
4362 for (i = 0; i < ndevs_to_allocate; i++) {
4363 if (i >= HPSA_MAX_DEVICES) {
4364 dev_warn(&h->pdev->dev, "maximum devices (%d) exceeded."
4365 " %d devices ignored.\n", HPSA_MAX_DEVICES,
4366 ndevs_to_allocate - HPSA_MAX_DEVICES);
4370 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL);
4371 if (!currentsd[i]) {
4372 h->drv_req_rescan = 1;
4378 if (is_scsi_rev_5(h))
4379 raid_ctlr_position = 0;
4381 raid_ctlr_position = nphysicals + nlogicals;
4383 /* adjust our table of devices */
4384 n_ext_target_devs = 0;
4385 for (i = 0; i < nphysicals + nlogicals + 1; i++) {
4386 u8 *lunaddrbytes, is_OBDR = 0;
4388 int phys_dev_index = i - (raid_ctlr_position == 0);
4389 bool skip_device = false;
4391 memset(tmpdevice, 0, sizeof(*tmpdevice));
4393 physical_device = i < nphysicals + (raid_ctlr_position == 0);
4395 /* Figure out where the LUN ID info is coming from */
4396 lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position,
4397 i, nphysicals, nlogicals, physdev_list, logdev_list);
4399 /* Determine if this is a lun from an external target array */
4400 tmpdevice->external =
4401 figure_external_status(h, raid_ctlr_position, i,
4402 nphysicals, nlocal_logicals);
4405 * Skip over some devices such as a spare.
4407 if (!tmpdevice->external && physical_device) {
4408 skip_device = hpsa_skip_device(h, lunaddrbytes,
4409 &physdev_list->LUN[phys_dev_index]);
4414 /* Get device type, vendor, model, device id, raid_map */
4415 rc = hpsa_update_device_info(h, lunaddrbytes, tmpdevice,
4417 if (rc == -ENOMEM) {
4418 dev_warn(&h->pdev->dev,
4419 "Out of memory, rescan deferred.\n");
4420 h->drv_req_rescan = 1;
4424 h->drv_req_rescan = 1;
4428 figure_bus_target_lun(h, lunaddrbytes, tmpdevice);
4429 this_device = currentsd[ncurrent];
4431 *this_device = *tmpdevice;
4432 this_device->physical_device = physical_device;
4435 * Expose all devices except for physical devices that
4438 if (MASKED_DEVICE(lunaddrbytes) && this_device->physical_device)
4439 this_device->expose_device = 0;
4441 this_device->expose_device = 1;
4445 * Get the SAS address for physical devices that are exposed.
4447 if (this_device->physical_device && this_device->expose_device)
4448 hpsa_get_sas_address(h, lunaddrbytes, this_device);
4450 switch (this_device->devtype) {
4452 /* We don't *really* support actual CD-ROM devices,
4453 * just "One Button Disaster Recovery" tape drive
4454 * which temporarily pretends to be a CD-ROM drive.
4455 * So we check that the device is really an OBDR tape
4456 * device by checking for "$DR-10" in bytes 43-48 of
4464 if (this_device->physical_device) {
4465 /* The disk is in HBA mode. */
4466 /* Never use RAID mapper in HBA mode. */
4467 this_device->offload_enabled = 0;
4468 hpsa_get_ioaccel_drive_info(h, this_device,
4469 physdev_list, phys_dev_index, id_phys);
4470 hpsa_get_path_info(this_device,
4471 physdev_list, phys_dev_index, id_phys);
4476 case TYPE_MEDIUM_CHANGER:
4479 case TYPE_ENCLOSURE:
4480 if (!this_device->external)
4481 hpsa_get_enclosure_info(h, lunaddrbytes,
4482 physdev_list, phys_dev_index,
4487 /* Only present the Smartarray HBA as a RAID controller.
4488 * If it's a RAID controller other than the HBA itself
4489 * (an external RAID controller, MSA500 or similar)
4492 if (!is_hba_lunid(lunaddrbytes))
4499 if (ncurrent >= HPSA_MAX_DEVICES)
4503 if (h->sas_host == NULL) {
4506 rc = hpsa_add_sas_host(h);
4508 dev_warn(&h->pdev->dev,
4509 "Could not add sas host %d\n", rc);
4514 adjust_hpsa_scsi_table(h, currentsd, ncurrent);
4517 for (i = 0; i < ndev_allocated; i++)
4518 kfree(currentsd[i]);
4520 kfree(physdev_list);
4526 static void hpsa_set_sg_descriptor(struct SGDescriptor *desc,
4527 struct scatterlist *sg)
4529 u64 addr64 = (u64) sg_dma_address(sg);
4530 unsigned int len = sg_dma_len(sg);
4532 desc->Addr = cpu_to_le64(addr64);
4533 desc->Len = cpu_to_le32(len);
4538 * hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
4539 * dma mapping and fills in the scatter gather entries of the
4542 static int hpsa_scatter_gather(struct ctlr_info *h,
4543 struct CommandList *cp,
4544 struct scsi_cmnd *cmd)
4546 struct scatterlist *sg;
4547 int use_sg, i, sg_limit, chained, last_sg;
4548 struct SGDescriptor *curr_sg;
4550 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
4552 use_sg = scsi_dma_map(cmd);
4557 goto sglist_finished;
4560 * If the number of entries is greater than the max for a single list,
4561 * then we have a chained list; we will set up all but one entry in the
4562 * first list (the last entry is saved for link information);
4563 * otherwise, we don't have a chained list and we'll set up at each of
4564 * the entries in the one list.
4567 chained = use_sg > h->max_cmd_sg_entries;
4568 sg_limit = chained ? h->max_cmd_sg_entries - 1 : use_sg;
4569 last_sg = scsi_sg_count(cmd) - 1;
4570 scsi_for_each_sg(cmd, sg, sg_limit, i) {
4571 hpsa_set_sg_descriptor(curr_sg, sg);
4577 * Continue with the chained list. Set curr_sg to the chained
4578 * list. Modify the limit to the total count less the entries
4579 * we've already set up. Resume the scan at the list entry
4580 * where the previous loop left off.
4582 curr_sg = h->cmd_sg_list[cp->cmdindex];
4583 sg_limit = use_sg - sg_limit;
4584 for_each_sg(sg, sg, sg_limit, i) {
4585 hpsa_set_sg_descriptor(curr_sg, sg);
4590 /* Back the pointer up to the last entry and mark it as "last". */
4591 (curr_sg - 1)->Ext = cpu_to_le32(HPSA_SG_LAST);
4593 if (use_sg + chained > h->maxSG)
4594 h->maxSG = use_sg + chained;
4597 cp->Header.SGList = h->max_cmd_sg_entries;
4598 cp->Header.SGTotal = cpu_to_le16(use_sg + 1);
4599 if (hpsa_map_sg_chain_block(h, cp)) {
4600 scsi_dma_unmap(cmd);
4608 cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */
4609 cp->Header.SGTotal = cpu_to_le16(use_sg); /* total sgs in cmd list */
4613 static inline void warn_zero_length_transfer(struct ctlr_info *h,
4614 u8 *cdb, int cdb_len,
4617 dev_warn(&h->pdev->dev,
4618 "%s: Blocking zero-length request: CDB:%*phN\n",
4619 func, cdb_len, cdb);
4622 #define IO_ACCEL_INELIGIBLE 1
4623 /* zero-length transfers trigger hardware errors. */
4624 static bool is_zero_length_transfer(u8 *cdb)
4628 /* Block zero-length transfer sizes on certain commands. */
4632 case VERIFY: /* 0x2F */
4633 case WRITE_VERIFY: /* 0x2E */
4634 block_cnt = get_unaligned_be16(&cdb[7]);
4638 case VERIFY_12: /* 0xAF */
4639 case WRITE_VERIFY_12: /* 0xAE */
4640 block_cnt = get_unaligned_be32(&cdb[6]);
4644 case VERIFY_16: /* 0x8F */
4645 block_cnt = get_unaligned_be32(&cdb[10]);
4651 return block_cnt == 0;
4654 static int fixup_ioaccel_cdb(u8 *cdb, int *cdb_len)
4660 /* Perform some CDB fixups if needed using 10 byte reads/writes only */
4668 if (*cdb_len == 6) {
4669 block = (((cdb[1] & 0x1F) << 16) |
4676 BUG_ON(*cdb_len != 12);
4677 block = get_unaligned_be32(&cdb[2]);
4678 block_cnt = get_unaligned_be32(&cdb[6]);
4680 if (block_cnt > 0xffff)
4681 return IO_ACCEL_INELIGIBLE;
4683 cdb[0] = is_write ? WRITE_10 : READ_10;
4685 cdb[2] = (u8) (block >> 24);
4686 cdb[3] = (u8) (block >> 16);
4687 cdb[4] = (u8) (block >> 8);
4688 cdb[5] = (u8) (block);
4690 cdb[7] = (u8) (block_cnt >> 8);
4691 cdb[8] = (u8) (block_cnt);
4699 static int hpsa_scsi_ioaccel1_queue_command(struct ctlr_info *h,
4700 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4701 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4703 struct scsi_cmnd *cmd = c->scsi_cmd;
4704 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
4706 unsigned int total_len = 0;
4707 struct scatterlist *sg;
4710 struct SGDescriptor *curr_sg;
4711 u32 control = IOACCEL1_CONTROL_SIMPLEQUEUE;
4713 /* TODO: implement chaining support */
4714 if (scsi_sg_count(cmd) > h->ioaccel_maxsg) {
4715 atomic_dec(&phys_disk->ioaccel_cmds_out);
4716 return IO_ACCEL_INELIGIBLE;
4719 BUG_ON(cmd->cmd_len > IOACCEL1_IOFLAGS_CDBLEN_MAX);
4721 if (is_zero_length_transfer(cdb)) {
4722 warn_zero_length_transfer(h, cdb, cdb_len, __func__);
4723 atomic_dec(&phys_disk->ioaccel_cmds_out);
4724 return IO_ACCEL_INELIGIBLE;
4727 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4728 atomic_dec(&phys_disk->ioaccel_cmds_out);
4729 return IO_ACCEL_INELIGIBLE;
4732 c->cmd_type = CMD_IOACCEL1;
4734 /* Adjust the DMA address to point to the accelerated command buffer */
4735 c->busaddr = (u32) h->ioaccel_cmd_pool_dhandle +
4736 (c->cmdindex * sizeof(*cp));
4737 BUG_ON(c->busaddr & 0x0000007F);
4739 use_sg = scsi_dma_map(cmd);
4741 atomic_dec(&phys_disk->ioaccel_cmds_out);
4747 scsi_for_each_sg(cmd, sg, use_sg, i) {
4748 addr64 = (u64) sg_dma_address(sg);
4749 len = sg_dma_len(sg);
4751 curr_sg->Addr = cpu_to_le64(addr64);
4752 curr_sg->Len = cpu_to_le32(len);
4753 curr_sg->Ext = cpu_to_le32(0);
4756 (--curr_sg)->Ext = cpu_to_le32(HPSA_SG_LAST);
4758 switch (cmd->sc_data_direction) {
4760 control |= IOACCEL1_CONTROL_DATA_OUT;
4762 case DMA_FROM_DEVICE:
4763 control |= IOACCEL1_CONTROL_DATA_IN;
4766 control |= IOACCEL1_CONTROL_NODATAXFER;
4769 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4770 cmd->sc_data_direction);
4775 control |= IOACCEL1_CONTROL_NODATAXFER;
4778 c->Header.SGList = use_sg;
4779 /* Fill out the command structure to submit */
4780 cp->dev_handle = cpu_to_le16(ioaccel_handle & 0xFFFF);
4781 cp->transfer_len = cpu_to_le32(total_len);
4782 cp->io_flags = cpu_to_le16(IOACCEL1_IOFLAGS_IO_REQ |
4783 (cdb_len & IOACCEL1_IOFLAGS_CDBLEN_MASK));
4784 cp->control = cpu_to_le32(control);
4785 memcpy(cp->CDB, cdb, cdb_len);
4786 memcpy(cp->CISS_LUN, scsi3addr, 8);
4787 /* Tag was already set at init time. */
4788 enqueue_cmd_and_start_io(h, c);
4793 * Queue a command directly to a device behind the controller using the
4794 * I/O accelerator path.
4796 static int hpsa_scsi_ioaccel_direct_map(struct ctlr_info *h,
4797 struct CommandList *c)
4799 struct scsi_cmnd *cmd = c->scsi_cmd;
4800 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4807 return hpsa_scsi_ioaccel_queue_command(h, c, dev->ioaccel_handle,
4808 cmd->cmnd, cmd->cmd_len, dev->scsi3addr, dev);
4812 * Set encryption parameters for the ioaccel2 request
4814 static void set_encrypt_ioaccel2(struct ctlr_info *h,
4815 struct CommandList *c, struct io_accel2_cmd *cp)
4817 struct scsi_cmnd *cmd = c->scsi_cmd;
4818 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4819 struct raid_map_data *map = &dev->raid_map;
4822 /* Are we doing encryption on this device */
4823 if (!(le16_to_cpu(map->flags) & RAID_MAP_FLAG_ENCRYPT_ON))
4825 /* Set the data encryption key index. */
4826 cp->dekindex = map->dekindex;
4828 /* Set the encryption enable flag, encoded into direction field. */
4829 cp->direction |= IOACCEL2_DIRECTION_ENCRYPT_MASK;
4831 /* Set encryption tweak values based on logical block address
4832 * If block size is 512, tweak value is LBA.
4833 * For other block sizes, tweak is (LBA * block size)/ 512)
4835 switch (cmd->cmnd[0]) {
4836 /* Required? 6-byte cdbs eliminated by fixup_ioaccel_cdb */
4839 first_block = (((cmd->cmnd[1] & 0x1F) << 16) |
4840 (cmd->cmnd[2] << 8) |
4845 /* Required? 12-byte cdbs eliminated by fixup_ioaccel_cdb */
4848 first_block = get_unaligned_be32(&cmd->cmnd[2]);
4852 first_block = get_unaligned_be64(&cmd->cmnd[2]);
4855 dev_err(&h->pdev->dev,
4856 "ERROR: %s: size (0x%x) not supported for encryption\n",
4857 __func__, cmd->cmnd[0]);
4862 if (le32_to_cpu(map->volume_blk_size) != 512)
4863 first_block = first_block *
4864 le32_to_cpu(map->volume_blk_size)/512;
4866 cp->tweak_lower = cpu_to_le32(first_block);
4867 cp->tweak_upper = cpu_to_le32(first_block >> 32);
4870 static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h,
4871 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4872 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4874 struct scsi_cmnd *cmd = c->scsi_cmd;
4875 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
4876 struct ioaccel2_sg_element *curr_sg;
4878 struct scatterlist *sg;
4886 if (!cmd->device->hostdata)
4889 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
4891 if (is_zero_length_transfer(cdb)) {
4892 warn_zero_length_transfer(h, cdb, cdb_len, __func__);
4893 atomic_dec(&phys_disk->ioaccel_cmds_out);
4894 return IO_ACCEL_INELIGIBLE;
4897 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4898 atomic_dec(&phys_disk->ioaccel_cmds_out);
4899 return IO_ACCEL_INELIGIBLE;
4902 c->cmd_type = CMD_IOACCEL2;
4903 /* Adjust the DMA address to point to the accelerated command buffer */
4904 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
4905 (c->cmdindex * sizeof(*cp));
4906 BUG_ON(c->busaddr & 0x0000007F);
4908 memset(cp, 0, sizeof(*cp));
4909 cp->IU_type = IOACCEL2_IU_TYPE;
4911 use_sg = scsi_dma_map(cmd);
4913 atomic_dec(&phys_disk->ioaccel_cmds_out);
4919 if (use_sg > h->ioaccel_maxsg) {
4920 addr64 = le64_to_cpu(
4921 h->ioaccel2_cmd_sg_list[c->cmdindex]->address);
4922 curr_sg->address = cpu_to_le64(addr64);
4923 curr_sg->length = 0;
4924 curr_sg->reserved[0] = 0;
4925 curr_sg->reserved[1] = 0;
4926 curr_sg->reserved[2] = 0;
4927 curr_sg->chain_indicator = 0x80;
4929 curr_sg = h->ioaccel2_cmd_sg_list[c->cmdindex];
4931 scsi_for_each_sg(cmd, sg, use_sg, i) {
4932 addr64 = (u64) sg_dma_address(sg);
4933 len = sg_dma_len(sg);
4935 curr_sg->address = cpu_to_le64(addr64);
4936 curr_sg->length = cpu_to_le32(len);
4937 curr_sg->reserved[0] = 0;
4938 curr_sg->reserved[1] = 0;
4939 curr_sg->reserved[2] = 0;
4940 curr_sg->chain_indicator = 0;
4944 switch (cmd->sc_data_direction) {
4946 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4947 cp->direction |= IOACCEL2_DIR_DATA_OUT;
4949 case DMA_FROM_DEVICE:
4950 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4951 cp->direction |= IOACCEL2_DIR_DATA_IN;
4954 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4955 cp->direction |= IOACCEL2_DIR_NO_DATA;
4958 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4959 cmd->sc_data_direction);
4964 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4965 cp->direction |= IOACCEL2_DIR_NO_DATA;
4968 /* Set encryption parameters, if necessary */
4969 set_encrypt_ioaccel2(h, c, cp);
4971 cp->scsi_nexus = cpu_to_le32(ioaccel_handle);
4972 cp->Tag = cpu_to_le32(c->cmdindex << DIRECT_LOOKUP_SHIFT);
4973 memcpy(cp->cdb, cdb, sizeof(cp->cdb));
4975 cp->data_len = cpu_to_le32(total_len);
4976 cp->err_ptr = cpu_to_le64(c->busaddr +
4977 offsetof(struct io_accel2_cmd, error_data));
4978 cp->err_len = cpu_to_le32(sizeof(cp->error_data));
4980 /* fill in sg elements */
4981 if (use_sg > h->ioaccel_maxsg) {
4983 cp->sg[0].length = cpu_to_le32(use_sg * sizeof(cp->sg[0]));
4984 if (hpsa_map_ioaccel2_sg_chain_block(h, cp, c)) {
4985 atomic_dec(&phys_disk->ioaccel_cmds_out);
4986 scsi_dma_unmap(cmd);
4990 cp->sg_count = (u8) use_sg;
4992 enqueue_cmd_and_start_io(h, c);
4997 * Queue a command to the correct I/O accelerator path.
4999 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
5000 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
5001 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
5003 if (!c->scsi_cmd->device)
5006 if (!c->scsi_cmd->device->hostdata)
5009 /* Try to honor the device's queue depth */
5010 if (atomic_inc_return(&phys_disk->ioaccel_cmds_out) >
5011 phys_disk->queue_depth) {
5012 atomic_dec(&phys_disk->ioaccel_cmds_out);
5013 return IO_ACCEL_INELIGIBLE;
5015 if (h->transMethod & CFGTBL_Trans_io_accel1)
5016 return hpsa_scsi_ioaccel1_queue_command(h, c, ioaccel_handle,
5017 cdb, cdb_len, scsi3addr,
5020 return hpsa_scsi_ioaccel2_queue_command(h, c, ioaccel_handle,
5021 cdb, cdb_len, scsi3addr,
5025 static void raid_map_helper(struct raid_map_data *map,
5026 int offload_to_mirror, u32 *map_index, u32 *current_group)
5028 if (offload_to_mirror == 0) {
5029 /* use physical disk in the first mirrored group. */
5030 *map_index %= le16_to_cpu(map->data_disks_per_row);
5034 /* determine mirror group that *map_index indicates */
5035 *current_group = *map_index /
5036 le16_to_cpu(map->data_disks_per_row);
5037 if (offload_to_mirror == *current_group)
5039 if (*current_group < le16_to_cpu(map->layout_map_count) - 1) {
5040 /* select map index from next group */
5041 *map_index += le16_to_cpu(map->data_disks_per_row);
5044 /* select map index from first group */
5045 *map_index %= le16_to_cpu(map->data_disks_per_row);
5048 } while (offload_to_mirror != *current_group);
5052 * Attempt to perform offload RAID mapping for a logical volume I/O.
5054 static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h,
5055 struct CommandList *c)
5057 struct scsi_cmnd *cmd = c->scsi_cmd;
5058 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
5059 struct raid_map_data *map = &dev->raid_map;
5060 struct raid_map_disk_data *dd = &map->data[0];
5063 u64 first_block, last_block;
5066 u64 first_row, last_row;
5067 u32 first_row_offset, last_row_offset;
5068 u32 first_column, last_column;
5069 u64 r0_first_row, r0_last_row;
5070 u32 r5or6_blocks_per_row;
5071 u64 r5or6_first_row, r5or6_last_row;
5072 u32 r5or6_first_row_offset, r5or6_last_row_offset;
5073 u32 r5or6_first_column, r5or6_last_column;
5074 u32 total_disks_per_row;
5076 u32 first_group, last_group, current_group;
5084 #if BITS_PER_LONG == 32
5087 int offload_to_mirror;
5092 /* check for valid opcode, get LBA and block count */
5093 switch (cmd->cmnd[0]) {
5098 first_block = (((cmd->cmnd[1] & 0x1F) << 16) |
5099 (cmd->cmnd[2] << 8) |
5101 block_cnt = cmd->cmnd[4];
5110 (((u64) cmd->cmnd[2]) << 24) |
5111 (((u64) cmd->cmnd[3]) << 16) |
5112 (((u64) cmd->cmnd[4]) << 8) |
5115 (((u32) cmd->cmnd[7]) << 8) |
5123 (((u64) cmd->cmnd[2]) << 24) |
5124 (((u64) cmd->cmnd[3]) << 16) |
5125 (((u64) cmd->cmnd[4]) << 8) |
5128 (((u32) cmd->cmnd[6]) << 24) |
5129 (((u32) cmd->cmnd[7]) << 16) |
5130 (((u32) cmd->cmnd[8]) << 8) |
5138 (((u64) cmd->cmnd[2]) << 56) |
5139 (((u64) cmd->cmnd[3]) << 48) |
5140 (((u64) cmd->cmnd[4]) << 40) |
5141 (((u64) cmd->cmnd[5]) << 32) |
5142 (((u64) cmd->cmnd[6]) << 24) |
5143 (((u64) cmd->cmnd[7]) << 16) |
5144 (((u64) cmd->cmnd[8]) << 8) |
5147 (((u32) cmd->cmnd[10]) << 24) |
5148 (((u32) cmd->cmnd[11]) << 16) |
5149 (((u32) cmd->cmnd[12]) << 8) |
5153 return IO_ACCEL_INELIGIBLE; /* process via normal I/O path */
5155 last_block = first_block + block_cnt - 1;
5157 /* check for write to non-RAID-0 */
5158 if (is_write && dev->raid_level != 0)
5159 return IO_ACCEL_INELIGIBLE;
5161 /* check for invalid block or wraparound */
5162 if (last_block >= le64_to_cpu(map->volume_blk_cnt) ||
5163 last_block < first_block)
5164 return IO_ACCEL_INELIGIBLE;
5166 /* calculate stripe information for the request */
5167 blocks_per_row = le16_to_cpu(map->data_disks_per_row) *
5168 le16_to_cpu(map->strip_size);
5169 strip_size = le16_to_cpu(map->strip_size);
5170 #if BITS_PER_LONG == 32
5171 tmpdiv = first_block;
5172 (void) do_div(tmpdiv, blocks_per_row);
5174 tmpdiv = last_block;
5175 (void) do_div(tmpdiv, blocks_per_row);
5177 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
5178 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
5179 tmpdiv = first_row_offset;
5180 (void) do_div(tmpdiv, strip_size);
5181 first_column = tmpdiv;
5182 tmpdiv = last_row_offset;
5183 (void) do_div(tmpdiv, strip_size);
5184 last_column = tmpdiv;
5186 first_row = first_block / blocks_per_row;
5187 last_row = last_block / blocks_per_row;
5188 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
5189 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
5190 first_column = first_row_offset / strip_size;
5191 last_column = last_row_offset / strip_size;
5194 /* if this isn't a single row/column then give to the controller */
5195 if ((first_row != last_row) || (first_column != last_column))
5196 return IO_ACCEL_INELIGIBLE;
5198 /* proceeding with driver mapping */
5199 total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
5200 le16_to_cpu(map->metadata_disks_per_row);
5201 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
5202 le16_to_cpu(map->row_cnt);
5203 map_index = (map_row * total_disks_per_row) + first_column;
5205 switch (dev->raid_level) {
5207 break; /* nothing special to do */
5209 /* Handles load balance across RAID 1 members.
5210 * (2-drive R1 and R10 with even # of drives.)
5211 * Appropriate for SSDs, not optimal for HDDs
5213 BUG_ON(le16_to_cpu(map->layout_map_count) != 2);
5214 if (dev->offload_to_mirror)
5215 map_index += le16_to_cpu(map->data_disks_per_row);
5216 dev->offload_to_mirror = !dev->offload_to_mirror;
5219 /* Handles N-way mirrors (R1-ADM)
5220 * and R10 with # of drives divisible by 3.)
5222 BUG_ON(le16_to_cpu(map->layout_map_count) != 3);
5224 offload_to_mirror = dev->offload_to_mirror;
5225 raid_map_helper(map, offload_to_mirror,
5226 &map_index, ¤t_group);
5227 /* set mirror group to use next time */
5229 (offload_to_mirror >=
5230 le16_to_cpu(map->layout_map_count) - 1)
5231 ? 0 : offload_to_mirror + 1;
5232 dev->offload_to_mirror = offload_to_mirror;
5233 /* Avoid direct use of dev->offload_to_mirror within this
5234 * function since multiple threads might simultaneously
5235 * increment it beyond the range of dev->layout_map_count -1.
5240 if (le16_to_cpu(map->layout_map_count) <= 1)
5243 /* Verify first and last block are in same RAID group */
5244 r5or6_blocks_per_row =
5245 le16_to_cpu(map->strip_size) *
5246 le16_to_cpu(map->data_disks_per_row);
5247 BUG_ON(r5or6_blocks_per_row == 0);
5248 stripesize = r5or6_blocks_per_row *
5249 le16_to_cpu(map->layout_map_count);
5250 #if BITS_PER_LONG == 32
5251 tmpdiv = first_block;
5252 first_group = do_div(tmpdiv, stripesize);
5253 tmpdiv = first_group;
5254 (void) do_div(tmpdiv, r5or6_blocks_per_row);
5255 first_group = tmpdiv;
5256 tmpdiv = last_block;
5257 last_group = do_div(tmpdiv, stripesize);
5258 tmpdiv = last_group;
5259 (void) do_div(tmpdiv, r5or6_blocks_per_row);
5260 last_group = tmpdiv;
5262 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
5263 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
5265 if (first_group != last_group)
5266 return IO_ACCEL_INELIGIBLE;
5268 /* Verify request is in a single row of RAID 5/6 */
5269 #if BITS_PER_LONG == 32
5270 tmpdiv = first_block;
5271 (void) do_div(tmpdiv, stripesize);
5272 first_row = r5or6_first_row = r0_first_row = tmpdiv;
5273 tmpdiv = last_block;
5274 (void) do_div(tmpdiv, stripesize);
5275 r5or6_last_row = r0_last_row = tmpdiv;
5277 first_row = r5or6_first_row = r0_first_row =
5278 first_block / stripesize;
5279 r5or6_last_row = r0_last_row = last_block / stripesize;
5281 if (r5or6_first_row != r5or6_last_row)
5282 return IO_ACCEL_INELIGIBLE;
5285 /* Verify request is in a single column */
5286 #if BITS_PER_LONG == 32
5287 tmpdiv = first_block;
5288 first_row_offset = do_div(tmpdiv, stripesize);
5289 tmpdiv = first_row_offset;
5290 first_row_offset = (u32) do_div(tmpdiv, r5or6_blocks_per_row);
5291 r5or6_first_row_offset = first_row_offset;
5292 tmpdiv = last_block;
5293 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
5294 tmpdiv = r5or6_last_row_offset;
5295 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
5296 tmpdiv = r5or6_first_row_offset;
5297 (void) do_div(tmpdiv, map->strip_size);
5298 first_column = r5or6_first_column = tmpdiv;
5299 tmpdiv = r5or6_last_row_offset;
5300 (void) do_div(tmpdiv, map->strip_size);
5301 r5or6_last_column = tmpdiv;
5303 first_row_offset = r5or6_first_row_offset =
5304 (u32)((first_block % stripesize) %
5305 r5or6_blocks_per_row);
5307 r5or6_last_row_offset =
5308 (u32)((last_block % stripesize) %
5309 r5or6_blocks_per_row);
5311 first_column = r5or6_first_column =
5312 r5or6_first_row_offset / le16_to_cpu(map->strip_size);
5314 r5or6_last_row_offset / le16_to_cpu(map->strip_size);
5316 if (r5or6_first_column != r5or6_last_column)
5317 return IO_ACCEL_INELIGIBLE;
5319 /* Request is eligible */
5320 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
5321 le16_to_cpu(map->row_cnt);
5323 map_index = (first_group *
5324 (le16_to_cpu(map->row_cnt) * total_disks_per_row)) +
5325 (map_row * total_disks_per_row) + first_column;
5328 return IO_ACCEL_INELIGIBLE;
5331 if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES))
5332 return IO_ACCEL_INELIGIBLE;
5334 c->phys_disk = dev->phys_disk[map_index];
5336 return IO_ACCEL_INELIGIBLE;
5338 disk_handle = dd[map_index].ioaccel_handle;
5339 disk_block = le64_to_cpu(map->disk_starting_blk) +
5340 first_row * le16_to_cpu(map->strip_size) +
5341 (first_row_offset - first_column *
5342 le16_to_cpu(map->strip_size));
5343 disk_block_cnt = block_cnt;
5345 /* handle differing logical/physical block sizes */
5346 if (map->phys_blk_shift) {
5347 disk_block <<= map->phys_blk_shift;
5348 disk_block_cnt <<= map->phys_blk_shift;
5350 BUG_ON(disk_block_cnt > 0xffff);
5352 /* build the new CDB for the physical disk I/O */
5353 if (disk_block > 0xffffffff) {
5354 cdb[0] = is_write ? WRITE_16 : READ_16;
5356 cdb[2] = (u8) (disk_block >> 56);
5357 cdb[3] = (u8) (disk_block >> 48);
5358 cdb[4] = (u8) (disk_block >> 40);
5359 cdb[5] = (u8) (disk_block >> 32);
5360 cdb[6] = (u8) (disk_block >> 24);
5361 cdb[7] = (u8) (disk_block >> 16);
5362 cdb[8] = (u8) (disk_block >> 8);
5363 cdb[9] = (u8) (disk_block);
5364 cdb[10] = (u8) (disk_block_cnt >> 24);
5365 cdb[11] = (u8) (disk_block_cnt >> 16);
5366 cdb[12] = (u8) (disk_block_cnt >> 8);
5367 cdb[13] = (u8) (disk_block_cnt);
5372 cdb[0] = is_write ? WRITE_10 : READ_10;
5374 cdb[2] = (u8) (disk_block >> 24);
5375 cdb[3] = (u8) (disk_block >> 16);
5376 cdb[4] = (u8) (disk_block >> 8);
5377 cdb[5] = (u8) (disk_block);
5379 cdb[7] = (u8) (disk_block_cnt >> 8);
5380 cdb[8] = (u8) (disk_block_cnt);
5384 return hpsa_scsi_ioaccel_queue_command(h, c, disk_handle, cdb, cdb_len,
5386 dev->phys_disk[map_index]);
5390 * Submit commands down the "normal" RAID stack path
5391 * All callers to hpsa_ciss_submit must check lockup_detected
5392 * beforehand, before (opt.) and after calling cmd_alloc
5394 static int hpsa_ciss_submit(struct ctlr_info *h,
5395 struct CommandList *c, struct scsi_cmnd *cmd,
5396 unsigned char scsi3addr[])
5398 cmd->host_scribble = (unsigned char *) c;
5399 c->cmd_type = CMD_SCSI;
5401 c->Header.ReplyQueue = 0; /* unused in simple mode */
5402 memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8);
5403 c->Header.tag = cpu_to_le64((c->cmdindex << DIRECT_LOOKUP_SHIFT));
5405 /* Fill in the request block... */
5407 c->Request.Timeout = 0;
5408 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB));
5409 c->Request.CDBLen = cmd->cmd_len;
5410 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len);
5411 switch (cmd->sc_data_direction) {
5413 c->Request.type_attr_dir =
5414 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_WRITE);
5416 case DMA_FROM_DEVICE:
5417 c->Request.type_attr_dir =
5418 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_READ);
5421 c->Request.type_attr_dir =
5422 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_NONE);
5424 case DMA_BIDIRECTIONAL:
5425 /* This can happen if a buggy application does a scsi passthru
5426 * and sets both inlen and outlen to non-zero. ( see
5427 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
5430 c->Request.type_attr_dir =
5431 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_RSVD);
5432 /* This is technically wrong, and hpsa controllers should
5433 * reject it with CMD_INVALID, which is the most correct
5434 * response, but non-fibre backends appear to let it
5435 * slide by, and give the same results as if this field
5436 * were set correctly. Either way is acceptable for
5437 * our purposes here.
5443 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
5444 cmd->sc_data_direction);
5449 if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */
5450 hpsa_cmd_resolve_and_free(h, c);
5451 return SCSI_MLQUEUE_HOST_BUSY;
5453 enqueue_cmd_and_start_io(h, c);
5454 /* the cmd'll come back via intr handler in complete_scsi_command() */
5458 static void hpsa_cmd_init(struct ctlr_info *h, int index,
5459 struct CommandList *c)
5461 dma_addr_t cmd_dma_handle, err_dma_handle;
5463 /* Zero out all of commandlist except the last field, refcount */
5464 memset(c, 0, offsetof(struct CommandList, refcount));
5465 c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT));
5466 cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
5467 c->err_info = h->errinfo_pool + index;
5468 memset(c->err_info, 0, sizeof(*c->err_info));
5469 err_dma_handle = h->errinfo_pool_dhandle
5470 + index * sizeof(*c->err_info);
5471 c->cmdindex = index;
5472 c->busaddr = (u32) cmd_dma_handle;
5473 c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle);
5474 c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info));
5476 c->scsi_cmd = SCSI_CMD_IDLE;
5479 static void hpsa_preinitialize_commands(struct ctlr_info *h)
5483 for (i = 0; i < h->nr_cmds; i++) {
5484 struct CommandList *c = h->cmd_pool + i;
5486 hpsa_cmd_init(h, i, c);
5487 atomic_set(&c->refcount, 0);
5491 static inline void hpsa_cmd_partial_init(struct ctlr_info *h, int index,
5492 struct CommandList *c)
5494 dma_addr_t cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
5496 BUG_ON(c->cmdindex != index);
5498 memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
5499 memset(c->err_info, 0, sizeof(*c->err_info));
5500 c->busaddr = (u32) cmd_dma_handle;
5503 static int hpsa_ioaccel_submit(struct ctlr_info *h,
5504 struct CommandList *c, struct scsi_cmnd *cmd,
5505 unsigned char *scsi3addr)
5507 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
5508 int rc = IO_ACCEL_INELIGIBLE;
5511 return SCSI_MLQUEUE_HOST_BUSY;
5513 cmd->host_scribble = (unsigned char *) c;
5515 if (dev->offload_enabled) {
5516 hpsa_cmd_init(h, c->cmdindex, c);
5517 c->cmd_type = CMD_SCSI;
5519 rc = hpsa_scsi_ioaccel_raid_map(h, c);
5520 if (rc < 0) /* scsi_dma_map failed. */
5521 rc = SCSI_MLQUEUE_HOST_BUSY;
5522 } else if (dev->hba_ioaccel_enabled) {
5523 hpsa_cmd_init(h, c->cmdindex, c);
5524 c->cmd_type = CMD_SCSI;
5526 rc = hpsa_scsi_ioaccel_direct_map(h, c);
5527 if (rc < 0) /* scsi_dma_map failed. */
5528 rc = SCSI_MLQUEUE_HOST_BUSY;
5533 static void hpsa_command_resubmit_worker(struct work_struct *work)
5535 struct scsi_cmnd *cmd;
5536 struct hpsa_scsi_dev_t *dev;
5537 struct CommandList *c = container_of(work, struct CommandList, work);
5540 dev = cmd->device->hostdata;
5542 cmd->result = DID_NO_CONNECT << 16;
5543 return hpsa_cmd_free_and_done(c->h, c, cmd);
5545 if (c->reset_pending)
5546 return hpsa_cmd_free_and_done(c->h, c, cmd);
5547 if (c->cmd_type == CMD_IOACCEL2) {
5548 struct ctlr_info *h = c->h;
5549 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
5552 if (c2->error_data.serv_response ==
5553 IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL) {
5554 rc = hpsa_ioaccel_submit(h, c, cmd, dev->scsi3addr);
5557 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
5559 * If we get here, it means dma mapping failed.
5560 * Try again via scsi mid layer, which will
5561 * then get SCSI_MLQUEUE_HOST_BUSY.
5563 cmd->result = DID_IMM_RETRY << 16;
5564 return hpsa_cmd_free_and_done(h, c, cmd);
5566 /* else, fall thru and resubmit down CISS path */
5569 hpsa_cmd_partial_init(c->h, c->cmdindex, c);
5570 if (hpsa_ciss_submit(c->h, c, cmd, dev->scsi3addr)) {
5572 * If we get here, it means dma mapping failed. Try
5573 * again via scsi mid layer, which will then get
5574 * SCSI_MLQUEUE_HOST_BUSY.
5576 * hpsa_ciss_submit will have already freed c
5577 * if it encountered a dma mapping failure.
5579 cmd->result = DID_IMM_RETRY << 16;
5580 cmd->scsi_done(cmd);
5584 /* Running in struct Scsi_Host->host_lock less mode */
5585 static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
5587 struct ctlr_info *h;
5588 struct hpsa_scsi_dev_t *dev;
5589 unsigned char scsi3addr[8];
5590 struct CommandList *c;
5593 /* Get the ptr to our adapter structure out of cmd->host. */
5594 h = sdev_to_hba(cmd->device);
5596 BUG_ON(cmd->request->tag < 0);
5598 dev = cmd->device->hostdata;
5600 cmd->result = DID_NO_CONNECT << 16;
5601 cmd->scsi_done(cmd);
5606 cmd->result = DID_NO_CONNECT << 16;
5607 cmd->scsi_done(cmd);
5611 memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr));
5613 if (unlikely(lockup_detected(h))) {
5614 cmd->result = DID_NO_CONNECT << 16;
5615 cmd->scsi_done(cmd);
5618 c = cmd_tagged_alloc(h, cmd);
5621 * Call alternate submit routine for I/O accelerated commands.
5622 * Retries always go down the normal I/O path.
5624 if (likely(cmd->retries == 0 &&
5625 !blk_rq_is_passthrough(cmd->request) &&
5626 h->acciopath_status)) {
5627 rc = hpsa_ioaccel_submit(h, c, cmd, scsi3addr);
5630 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
5631 hpsa_cmd_resolve_and_free(h, c);
5632 return SCSI_MLQUEUE_HOST_BUSY;
5635 return hpsa_ciss_submit(h, c, cmd, scsi3addr);
5638 static void hpsa_scan_complete(struct ctlr_info *h)
5640 unsigned long flags;
5642 spin_lock_irqsave(&h->scan_lock, flags);
5643 h->scan_finished = 1;
5644 wake_up(&h->scan_wait_queue);
5645 spin_unlock_irqrestore(&h->scan_lock, flags);
5648 static void hpsa_scan_start(struct Scsi_Host *sh)
5650 struct ctlr_info *h = shost_to_hba(sh);
5651 unsigned long flags;
5654 * Don't let rescans be initiated on a controller known to be locked
5655 * up. If the controller locks up *during* a rescan, that thread is
5656 * probably hosed, but at least we can prevent new rescan threads from
5657 * piling up on a locked up controller.
5659 if (unlikely(lockup_detected(h)))
5660 return hpsa_scan_complete(h);
5663 * If a scan is already waiting to run, no need to add another
5665 spin_lock_irqsave(&h->scan_lock, flags);
5666 if (h->scan_waiting) {
5667 spin_unlock_irqrestore(&h->scan_lock, flags);
5671 spin_unlock_irqrestore(&h->scan_lock, flags);
5673 /* wait until any scan already in progress is finished. */
5675 spin_lock_irqsave(&h->scan_lock, flags);
5676 if (h->scan_finished)
5678 h->scan_waiting = 1;
5679 spin_unlock_irqrestore(&h->scan_lock, flags);
5680 wait_event(h->scan_wait_queue, h->scan_finished);
5681 /* Note: We don't need to worry about a race between this
5682 * thread and driver unload because the midlayer will
5683 * have incremented the reference count, so unload won't
5684 * happen if we're in here.
5687 h->scan_finished = 0; /* mark scan as in progress */
5688 h->scan_waiting = 0;
5689 spin_unlock_irqrestore(&h->scan_lock, flags);
5691 if (unlikely(lockup_detected(h)))
5692 return hpsa_scan_complete(h);
5695 * Do the scan after a reset completion
5697 spin_lock_irqsave(&h->reset_lock, flags);
5698 if (h->reset_in_progress) {
5699 h->drv_req_rescan = 1;
5700 spin_unlock_irqrestore(&h->reset_lock, flags);
5701 hpsa_scan_complete(h);
5704 spin_unlock_irqrestore(&h->reset_lock, flags);
5706 hpsa_update_scsi_devices(h);
5708 hpsa_scan_complete(h);
5711 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth)
5713 struct hpsa_scsi_dev_t *logical_drive = sdev->hostdata;
5720 else if (qdepth > logical_drive->queue_depth)
5721 qdepth = logical_drive->queue_depth;
5723 return scsi_change_queue_depth(sdev, qdepth);
5726 static int hpsa_scan_finished(struct Scsi_Host *sh,
5727 unsigned long elapsed_time)
5729 struct ctlr_info *h = shost_to_hba(sh);
5730 unsigned long flags;
5733 spin_lock_irqsave(&h->scan_lock, flags);
5734 finished = h->scan_finished;
5735 spin_unlock_irqrestore(&h->scan_lock, flags);
5739 static int hpsa_scsi_host_alloc(struct ctlr_info *h)
5741 struct Scsi_Host *sh;
5743 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h));
5745 dev_err(&h->pdev->dev, "scsi_host_alloc failed\n");
5752 sh->max_channel = 3;
5753 sh->max_cmd_len = MAX_COMMAND_SIZE;
5754 sh->max_lun = HPSA_MAX_LUN;
5755 sh->max_id = HPSA_MAX_LUN;
5756 sh->can_queue = h->nr_cmds - HPSA_NRESERVED_CMDS;
5757 sh->cmd_per_lun = sh->can_queue;
5758 sh->sg_tablesize = h->maxsgentries;
5759 sh->transportt = hpsa_sas_transport_template;
5760 sh->hostdata[0] = (unsigned long) h;
5761 sh->irq = pci_irq_vector(h->pdev, 0);
5762 sh->unique_id = sh->irq;
5768 static int hpsa_scsi_add_host(struct ctlr_info *h)
5772 rv = scsi_add_host(h->scsi_host, &h->pdev->dev);
5774 dev_err(&h->pdev->dev, "scsi_add_host failed\n");
5777 scsi_scan_host(h->scsi_host);
5782 * The block layer has already gone to the trouble of picking out a unique,
5783 * small-integer tag for this request. We use an offset from that value as
5784 * an index to select our command block. (The offset allows us to reserve the
5785 * low-numbered entries for our own uses.)
5787 static int hpsa_get_cmd_index(struct scsi_cmnd *scmd)
5789 int idx = scmd->request->tag;
5794 /* Offset to leave space for internal cmds. */
5795 return idx += HPSA_NRESERVED_CMDS;
5799 * Send a TEST_UNIT_READY command to the specified LUN using the specified
5800 * reply queue; returns zero if the unit is ready, and non-zero otherwise.
5802 static int hpsa_send_test_unit_ready(struct ctlr_info *h,
5803 struct CommandList *c, unsigned char lunaddr[],
5808 /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */
5809 (void) fill_cmd(c, TEST_UNIT_READY, h,
5810 NULL, 0, 0, lunaddr, TYPE_CMD);
5811 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, DEFAULT_TIMEOUT);
5814 /* no unmap needed here because no data xfer. */
5816 /* Check if the unit is already ready. */
5817 if (c->err_info->CommandStatus == CMD_SUCCESS)
5821 * The first command sent after reset will receive "unit attention" to
5822 * indicate that the LUN has been reset...this is actually what we're
5823 * looking for (but, success is good too).
5825 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
5826 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
5827 (c->err_info->SenseInfo[2] == NO_SENSE ||
5828 c->err_info->SenseInfo[2] == UNIT_ATTENTION))
5835 * Wait for a TEST_UNIT_READY command to complete, retrying as necessary;
5836 * returns zero when the unit is ready, and non-zero when giving up.
5838 static int hpsa_wait_for_test_unit_ready(struct ctlr_info *h,
5839 struct CommandList *c,
5840 unsigned char lunaddr[], int reply_queue)
5844 int waittime = 1; /* seconds */
5846 /* Send test unit ready until device ready, or give up. */
5847 for (count = 0; count < HPSA_TUR_RETRY_LIMIT; count++) {
5850 * Wait for a bit. do this first, because if we send
5851 * the TUR right away, the reset will just abort it.
5853 msleep(1000 * waittime);
5855 rc = hpsa_send_test_unit_ready(h, c, lunaddr, reply_queue);
5859 /* Increase wait time with each try, up to a point. */
5860 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS)
5863 dev_warn(&h->pdev->dev,
5864 "waiting %d secs for device to become ready.\n",
5871 static int wait_for_device_to_become_ready(struct ctlr_info *h,
5872 unsigned char lunaddr[],
5879 struct CommandList *c;
5884 * If no specific reply queue was requested, then send the TUR
5885 * repeatedly, requesting a reply on each reply queue; otherwise execute
5886 * the loop exactly once using only the specified queue.
5888 if (reply_queue == DEFAULT_REPLY_QUEUE) {
5890 last_queue = h->nreply_queues - 1;
5892 first_queue = reply_queue;
5893 last_queue = reply_queue;
5896 for (rq = first_queue; rq <= last_queue; rq++) {
5897 rc = hpsa_wait_for_test_unit_ready(h, c, lunaddr, rq);
5903 dev_warn(&h->pdev->dev, "giving up on device.\n");
5905 dev_warn(&h->pdev->dev, "device is ready.\n");
5911 /* Need at least one of these error handlers to keep ../scsi/hosts.c from
5912 * complaining. Doing a host- or bus-reset can't do anything good here.
5914 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
5917 struct ctlr_info *h;
5918 struct hpsa_scsi_dev_t *dev;
5921 unsigned long flags;
5923 /* find the controller to which the command to be aborted was sent */
5924 h = sdev_to_hba(scsicmd->device);
5925 if (h == NULL) /* paranoia */
5928 spin_lock_irqsave(&h->reset_lock, flags);
5929 h->reset_in_progress = 1;
5930 spin_unlock_irqrestore(&h->reset_lock, flags);
5932 if (lockup_detected(h)) {
5934 goto return_reset_status;
5937 dev = scsicmd->device->hostdata;
5939 dev_err(&h->pdev->dev, "%s: device lookup failed\n", __func__);
5941 goto return_reset_status;
5944 if (dev->devtype == TYPE_ENCLOSURE) {
5946 goto return_reset_status;
5949 /* if controller locked up, we can guarantee command won't complete */
5950 if (lockup_detected(h)) {
5951 snprintf(msg, sizeof(msg),
5952 "cmd %d RESET FAILED, lockup detected",
5953 hpsa_get_cmd_index(scsicmd));
5954 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5956 goto return_reset_status;
5959 /* this reset request might be the result of a lockup; check */
5960 if (detect_controller_lockup(h)) {
5961 snprintf(msg, sizeof(msg),
5962 "cmd %d RESET FAILED, new lockup detected",
5963 hpsa_get_cmd_index(scsicmd));
5964 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5966 goto return_reset_status;
5969 /* Do not attempt on controller */
5970 if (is_hba_lunid(dev->scsi3addr)) {
5972 goto return_reset_status;
5975 if (is_logical_dev_addr_mode(dev->scsi3addr))
5976 reset_type = HPSA_DEVICE_RESET_MSG;
5978 reset_type = HPSA_PHYS_TARGET_RESET;
5980 sprintf(msg, "resetting %s",
5981 reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ");
5982 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5984 /* send a reset to the SCSI LUN which the command was sent to */
5985 rc = hpsa_do_reset(h, dev, dev->scsi3addr, reset_type,
5986 DEFAULT_REPLY_QUEUE);
5992 sprintf(msg, "reset %s %s",
5993 reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ",
5994 rc == SUCCESS ? "completed successfully" : "failed");
5995 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5997 return_reset_status:
5998 spin_lock_irqsave(&h->reset_lock, flags);
5999 h->reset_in_progress = 0;
6000 spin_unlock_irqrestore(&h->reset_lock, flags);
6005 * For operations with an associated SCSI command, a command block is allocated
6006 * at init, and managed by cmd_tagged_alloc() and cmd_tagged_free() using the
6007 * block request tag as an index into a table of entries. cmd_tagged_free() is
6008 * the complement, although cmd_free() may be called instead.
6010 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
6011 struct scsi_cmnd *scmd)
6013 int idx = hpsa_get_cmd_index(scmd);
6014 struct CommandList *c = h->cmd_pool + idx;
6016 if (idx < HPSA_NRESERVED_CMDS || idx >= h->nr_cmds) {
6017 dev_err(&h->pdev->dev, "Bad block tag: %d not in [%d..%d]\n",
6018 idx, HPSA_NRESERVED_CMDS, h->nr_cmds - 1);
6019 /* The index value comes from the block layer, so if it's out of
6020 * bounds, it's probably not our bug.
6025 atomic_inc(&c->refcount);
6026 if (unlikely(!hpsa_is_cmd_idle(c))) {
6028 * We expect that the SCSI layer will hand us a unique tag
6029 * value. Thus, there should never be a collision here between
6030 * two requests...because if the selected command isn't idle
6031 * then someone is going to be very disappointed.
6033 dev_err(&h->pdev->dev,
6034 "tag collision (tag=%d) in cmd_tagged_alloc().\n",
6036 if (c->scsi_cmd != NULL)
6037 scsi_print_command(c->scsi_cmd);
6038 scsi_print_command(scmd);
6041 hpsa_cmd_partial_init(h, idx, c);
6045 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c)
6048 * Release our reference to the block. We don't need to do anything
6049 * else to free it, because it is accessed by index.
6051 (void)atomic_dec(&c->refcount);
6055 * For operations that cannot sleep, a command block is allocated at init,
6056 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
6057 * which ones are free or in use. Lock must be held when calling this.
6058 * cmd_free() is the complement.
6059 * This function never gives up and returns NULL. If it hangs,
6060 * another thread must call cmd_free() to free some tags.
6063 static struct CommandList *cmd_alloc(struct ctlr_info *h)
6065 struct CommandList *c;
6070 * There is some *extremely* small but non-zero chance that that
6071 * multiple threads could get in here, and one thread could
6072 * be scanning through the list of bits looking for a free
6073 * one, but the free ones are always behind him, and other
6074 * threads sneak in behind him and eat them before he can
6075 * get to them, so that while there is always a free one, a
6076 * very unlucky thread might be starved anyway, never able to
6077 * beat the other threads. In reality, this happens so
6078 * infrequently as to be indistinguishable from never.
6080 * Note that we start allocating commands before the SCSI host structure
6081 * is initialized. Since the search starts at bit zero, this
6082 * all works, since we have at least one command structure available;
6083 * however, it means that the structures with the low indexes have to be
6084 * reserved for driver-initiated requests, while requests from the block
6085 * layer will use the higher indexes.
6089 i = find_next_zero_bit(h->cmd_pool_bits,
6090 HPSA_NRESERVED_CMDS,
6092 if (unlikely(i >= HPSA_NRESERVED_CMDS)) {
6096 c = h->cmd_pool + i;
6097 refcount = atomic_inc_return(&c->refcount);
6098 if (unlikely(refcount > 1)) {
6099 cmd_free(h, c); /* already in use */
6100 offset = (i + 1) % HPSA_NRESERVED_CMDS;
6103 set_bit(i & (BITS_PER_LONG - 1),
6104 h->cmd_pool_bits + (i / BITS_PER_LONG));
6105 break; /* it's ours now. */
6107 hpsa_cmd_partial_init(h, i, c);
6112 * This is the complementary operation to cmd_alloc(). Note, however, in some
6113 * corner cases it may also be used to free blocks allocated by
6114 * cmd_tagged_alloc() in which case the ref-count decrement does the trick and
6115 * the clear-bit is harmless.
6117 static void cmd_free(struct ctlr_info *h, struct CommandList *c)
6119 if (atomic_dec_and_test(&c->refcount)) {
6122 i = c - h->cmd_pool;
6123 clear_bit(i & (BITS_PER_LONG - 1),
6124 h->cmd_pool_bits + (i / BITS_PER_LONG));
6128 #ifdef CONFIG_COMPAT
6130 static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd,
6133 IOCTL32_Command_struct __user *arg32 =
6134 (IOCTL32_Command_struct __user *) arg;
6135 IOCTL_Command_struct arg64;
6136 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
6140 memset(&arg64, 0, sizeof(arg64));
6142 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
6143 sizeof(arg64.LUN_info));
6144 err |= copy_from_user(&arg64.Request, &arg32->Request,
6145 sizeof(arg64.Request));
6146 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
6147 sizeof(arg64.error_info));
6148 err |= get_user(arg64.buf_size, &arg32->buf_size);
6149 err |= get_user(cp, &arg32->buf);
6150 arg64.buf = compat_ptr(cp);
6151 err |= copy_to_user(p, &arg64, sizeof(arg64));
6156 err = hpsa_ioctl(dev, CCISS_PASSTHRU, p);
6159 err |= copy_in_user(&arg32->error_info, &p->error_info,
6160 sizeof(arg32->error_info));
6166 static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
6167 int cmd, void __user *arg)
6169 BIG_IOCTL32_Command_struct __user *arg32 =
6170 (BIG_IOCTL32_Command_struct __user *) arg;
6171 BIG_IOCTL_Command_struct arg64;
6172 BIG_IOCTL_Command_struct __user *p =
6173 compat_alloc_user_space(sizeof(arg64));
6177 memset(&arg64, 0, sizeof(arg64));
6179 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
6180 sizeof(arg64.LUN_info));
6181 err |= copy_from_user(&arg64.Request, &arg32->Request,
6182 sizeof(arg64.Request));
6183 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
6184 sizeof(arg64.error_info));
6185 err |= get_user(arg64.buf_size, &arg32->buf_size);
6186 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
6187 err |= get_user(cp, &arg32->buf);
6188 arg64.buf = compat_ptr(cp);
6189 err |= copy_to_user(p, &arg64, sizeof(arg64));
6194 err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, p);
6197 err |= copy_in_user(&arg32->error_info, &p->error_info,
6198 sizeof(arg32->error_info));
6204 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
6207 case CCISS_GETPCIINFO:
6208 case CCISS_GETINTINFO:
6209 case CCISS_SETINTINFO:
6210 case CCISS_GETNODENAME:
6211 case CCISS_SETNODENAME:
6212 case CCISS_GETHEARTBEAT:
6213 case CCISS_GETBUSTYPES:
6214 case CCISS_GETFIRMVER:
6215 case CCISS_GETDRIVVER:
6216 case CCISS_REVALIDVOLS:
6217 case CCISS_DEREGDISK:
6218 case CCISS_REGNEWDISK:
6220 case CCISS_RESCANDISK:
6221 case CCISS_GETLUNINFO:
6222 return hpsa_ioctl(dev, cmd, arg);
6224 case CCISS_PASSTHRU32:
6225 return hpsa_ioctl32_passthru(dev, cmd, arg);
6226 case CCISS_BIG_PASSTHRU32:
6227 return hpsa_ioctl32_big_passthru(dev, cmd, arg);
6230 return -ENOIOCTLCMD;
6235 static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp)
6237 struct hpsa_pci_info pciinfo;
6241 pciinfo.domain = pci_domain_nr(h->pdev->bus);
6242 pciinfo.bus = h->pdev->bus->number;
6243 pciinfo.dev_fn = h->pdev->devfn;
6244 pciinfo.board_id = h->board_id;
6245 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo)))
6250 static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp)
6252 DriverVer_type DriverVer;
6253 unsigned char vmaj, vmin, vsubmin;
6256 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu",
6257 &vmaj, &vmin, &vsubmin);
6259 dev_info(&h->pdev->dev, "driver version string '%s' "
6260 "unrecognized.", HPSA_DRIVER_VERSION);
6265 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin;
6268 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type)))
6273 static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
6275 IOCTL_Command_struct iocommand;
6276 struct CommandList *c;
6283 if (!capable(CAP_SYS_RAWIO))
6285 if (copy_from_user(&iocommand, argp, sizeof(iocommand)))
6287 if ((iocommand.buf_size < 1) &&
6288 (iocommand.Request.Type.Direction != XFER_NONE)) {
6291 if (iocommand.buf_size > 0) {
6292 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
6295 if (iocommand.Request.Type.Direction & XFER_WRITE) {
6296 /* Copy the data into the buffer we created */
6297 if (copy_from_user(buff, iocommand.buf,
6298 iocommand.buf_size)) {
6303 memset(buff, 0, iocommand.buf_size);
6308 /* Fill in the command type */
6309 c->cmd_type = CMD_IOCTL_PEND;
6310 c->scsi_cmd = SCSI_CMD_BUSY;
6311 /* Fill in Command Header */
6312 c->Header.ReplyQueue = 0; /* unused in simple mode */
6313 if (iocommand.buf_size > 0) { /* buffer to fill */
6314 c->Header.SGList = 1;
6315 c->Header.SGTotal = cpu_to_le16(1);
6316 } else { /* no buffers to fill */
6317 c->Header.SGList = 0;
6318 c->Header.SGTotal = cpu_to_le16(0);
6320 memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN));
6322 /* Fill in Request block */
6323 memcpy(&c->Request, &iocommand.Request,
6324 sizeof(c->Request));
6326 /* Fill in the scatter gather information */
6327 if (iocommand.buf_size > 0) {
6328 temp64 = dma_map_single(&h->pdev->dev, buff,
6329 iocommand.buf_size, DMA_BIDIRECTIONAL);
6330 if (dma_mapping_error(&h->pdev->dev, (dma_addr_t) temp64)) {
6331 c->SG[0].Addr = cpu_to_le64(0);
6332 c->SG[0].Len = cpu_to_le32(0);
6336 c->SG[0].Addr = cpu_to_le64(temp64);
6337 c->SG[0].Len = cpu_to_le32(iocommand.buf_size);
6338 c->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* not chaining */
6340 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
6342 if (iocommand.buf_size > 0)
6343 hpsa_pci_unmap(h->pdev, c, 1, DMA_BIDIRECTIONAL);
6344 check_ioctl_unit_attention(h, c);
6350 /* Copy the error information out */
6351 memcpy(&iocommand.error_info, c->err_info,
6352 sizeof(iocommand.error_info));
6353 if (copy_to_user(argp, &iocommand, sizeof(iocommand))) {
6357 if ((iocommand.Request.Type.Direction & XFER_READ) &&
6358 iocommand.buf_size > 0) {
6359 /* Copy the data out of the buffer we created */
6360 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
6372 static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
6374 BIG_IOCTL_Command_struct *ioc;
6375 struct CommandList *c;
6376 unsigned char **buff = NULL;
6377 int *buff_size = NULL;
6383 BYTE __user *data_ptr;
6387 if (!capable(CAP_SYS_RAWIO))
6389 ioc = vmemdup_user(argp, sizeof(*ioc));
6391 status = PTR_ERR(ioc);
6394 if ((ioc->buf_size < 1) &&
6395 (ioc->Request.Type.Direction != XFER_NONE)) {
6399 /* Check kmalloc limits using all SGs */
6400 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
6404 if (ioc->buf_size > ioc->malloc_size * SG_ENTRIES_IN_CMD) {
6408 buff = kcalloc(SG_ENTRIES_IN_CMD, sizeof(char *), GFP_KERNEL);
6413 buff_size = kmalloc_array(SG_ENTRIES_IN_CMD, sizeof(int), GFP_KERNEL);
6418 left = ioc->buf_size;
6419 data_ptr = ioc->buf;
6421 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
6422 buff_size[sg_used] = sz;
6423 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
6424 if (buff[sg_used] == NULL) {
6428 if (ioc->Request.Type.Direction & XFER_WRITE) {
6429 if (copy_from_user(buff[sg_used], data_ptr, sz)) {
6434 memset(buff[sg_used], 0, sz);
6441 c->cmd_type = CMD_IOCTL_PEND;
6442 c->scsi_cmd = SCSI_CMD_BUSY;
6443 c->Header.ReplyQueue = 0;
6444 c->Header.SGList = (u8) sg_used;
6445 c->Header.SGTotal = cpu_to_le16(sg_used);
6446 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN));
6447 memcpy(&c->Request, &ioc->Request, sizeof(c->Request));
6448 if (ioc->buf_size > 0) {
6450 for (i = 0; i < sg_used; i++) {
6451 temp64 = dma_map_single(&h->pdev->dev, buff[i],
6452 buff_size[i], DMA_BIDIRECTIONAL);
6453 if (dma_mapping_error(&h->pdev->dev,
6454 (dma_addr_t) temp64)) {
6455 c->SG[i].Addr = cpu_to_le64(0);
6456 c->SG[i].Len = cpu_to_le32(0);
6457 hpsa_pci_unmap(h->pdev, c, i,
6462 c->SG[i].Addr = cpu_to_le64(temp64);
6463 c->SG[i].Len = cpu_to_le32(buff_size[i]);
6464 c->SG[i].Ext = cpu_to_le32(0);
6466 c->SG[--i].Ext = cpu_to_le32(HPSA_SG_LAST);
6468 status = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
6471 hpsa_pci_unmap(h->pdev, c, sg_used, DMA_BIDIRECTIONAL);
6472 check_ioctl_unit_attention(h, c);
6478 /* Copy the error information out */
6479 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info));
6480 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
6484 if ((ioc->Request.Type.Direction & XFER_READ) && ioc->buf_size > 0) {
6487 /* Copy the data out of the buffer we created */
6488 BYTE __user *ptr = ioc->buf;
6489 for (i = 0; i < sg_used; i++) {
6490 if (copy_to_user(ptr, buff[i], buff_size[i])) {
6494 ptr += buff_size[i];
6504 for (i = 0; i < sg_used; i++)
6513 static void check_ioctl_unit_attention(struct ctlr_info *h,
6514 struct CommandList *c)
6516 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
6517 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
6518 (void) check_for_unit_attention(h, c);
6524 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
6526 struct ctlr_info *h;
6527 void __user *argp = (void __user *)arg;
6530 h = sdev_to_hba(dev);
6533 case CCISS_DEREGDISK:
6534 case CCISS_REGNEWDISK:
6536 hpsa_scan_start(h->scsi_host);
6538 case CCISS_GETPCIINFO:
6539 return hpsa_getpciinfo_ioctl(h, argp);
6540 case CCISS_GETDRIVVER:
6541 return hpsa_getdrivver_ioctl(h, argp);
6542 case CCISS_PASSTHRU:
6543 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6545 rc = hpsa_passthru_ioctl(h, argp);
6546 atomic_inc(&h->passthru_cmds_avail);
6548 case CCISS_BIG_PASSTHRU:
6549 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6551 rc = hpsa_big_passthru_ioctl(h, argp);
6552 atomic_inc(&h->passthru_cmds_avail);
6559 static void hpsa_send_host_reset(struct ctlr_info *h, unsigned char *scsi3addr,
6562 struct CommandList *c;
6566 /* fill_cmd can't fail here, no data buffer to map */
6567 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0,
6568 RAID_CTLR_LUNID, TYPE_MSG);
6569 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */
6571 enqueue_cmd_and_start_io(h, c);
6572 /* Don't wait for completion, the reset won't complete. Don't free
6573 * the command either. This is the last command we will send before
6574 * re-initializing everything, so it doesn't matter and won't leak.
6579 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
6580 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
6583 enum dma_data_direction dir = DMA_NONE;
6585 c->cmd_type = CMD_IOCTL_PEND;
6586 c->scsi_cmd = SCSI_CMD_BUSY;
6587 c->Header.ReplyQueue = 0;
6588 if (buff != NULL && size > 0) {
6589 c->Header.SGList = 1;
6590 c->Header.SGTotal = cpu_to_le16(1);
6592 c->Header.SGList = 0;
6593 c->Header.SGTotal = cpu_to_le16(0);
6595 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
6597 if (cmd_type == TYPE_CMD) {
6600 /* are we trying to read a vital product page */
6601 if (page_code & VPD_PAGE) {
6602 c->Request.CDB[1] = 0x01;
6603 c->Request.CDB[2] = (page_code & 0xff);
6605 c->Request.CDBLen = 6;
6606 c->Request.type_attr_dir =
6607 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6608 c->Request.Timeout = 0;
6609 c->Request.CDB[0] = HPSA_INQUIRY;
6610 c->Request.CDB[4] = size & 0xFF;
6612 case RECEIVE_DIAGNOSTIC:
6613 c->Request.CDBLen = 6;
6614 c->Request.type_attr_dir =
6615 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6616 c->Request.Timeout = 0;
6617 c->Request.CDB[0] = cmd;
6618 c->Request.CDB[1] = 1;
6619 c->Request.CDB[2] = 1;
6620 c->Request.CDB[3] = (size >> 8) & 0xFF;
6621 c->Request.CDB[4] = size & 0xFF;
6623 case HPSA_REPORT_LOG:
6624 case HPSA_REPORT_PHYS:
6625 /* Talking to controller so It's a physical command
6626 mode = 00 target = 0. Nothing to write.
6628 c->Request.CDBLen = 12;
6629 c->Request.type_attr_dir =
6630 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6631 c->Request.Timeout = 0;
6632 c->Request.CDB[0] = cmd;
6633 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6634 c->Request.CDB[7] = (size >> 16) & 0xFF;
6635 c->Request.CDB[8] = (size >> 8) & 0xFF;
6636 c->Request.CDB[9] = size & 0xFF;
6638 case BMIC_SENSE_DIAG_OPTIONS:
6639 c->Request.CDBLen = 16;
6640 c->Request.type_attr_dir =
6641 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6642 c->Request.Timeout = 0;
6643 /* Spec says this should be BMIC_WRITE */
6644 c->Request.CDB[0] = BMIC_READ;
6645 c->Request.CDB[6] = BMIC_SENSE_DIAG_OPTIONS;
6647 case BMIC_SET_DIAG_OPTIONS:
6648 c->Request.CDBLen = 16;
6649 c->Request.type_attr_dir =
6650 TYPE_ATTR_DIR(cmd_type,
6651 ATTR_SIMPLE, XFER_WRITE);
6652 c->Request.Timeout = 0;
6653 c->Request.CDB[0] = BMIC_WRITE;
6654 c->Request.CDB[6] = BMIC_SET_DIAG_OPTIONS;
6656 case HPSA_CACHE_FLUSH:
6657 c->Request.CDBLen = 12;
6658 c->Request.type_attr_dir =
6659 TYPE_ATTR_DIR(cmd_type,
6660 ATTR_SIMPLE, XFER_WRITE);
6661 c->Request.Timeout = 0;
6662 c->Request.CDB[0] = BMIC_WRITE;
6663 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
6664 c->Request.CDB[7] = (size >> 8) & 0xFF;
6665 c->Request.CDB[8] = size & 0xFF;
6667 case TEST_UNIT_READY:
6668 c->Request.CDBLen = 6;
6669 c->Request.type_attr_dir =
6670 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6671 c->Request.Timeout = 0;
6673 case HPSA_GET_RAID_MAP:
6674 c->Request.CDBLen = 12;
6675 c->Request.type_attr_dir =
6676 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6677 c->Request.Timeout = 0;
6678 c->Request.CDB[0] = HPSA_CISS_READ;
6679 c->Request.CDB[1] = cmd;
6680 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6681 c->Request.CDB[7] = (size >> 16) & 0xFF;
6682 c->Request.CDB[8] = (size >> 8) & 0xFF;
6683 c->Request.CDB[9] = size & 0xFF;
6685 case BMIC_SENSE_CONTROLLER_PARAMETERS:
6686 c->Request.CDBLen = 10;
6687 c->Request.type_attr_dir =
6688 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6689 c->Request.Timeout = 0;
6690 c->Request.CDB[0] = BMIC_READ;
6691 c->Request.CDB[6] = BMIC_SENSE_CONTROLLER_PARAMETERS;
6692 c->Request.CDB[7] = (size >> 16) & 0xFF;
6693 c->Request.CDB[8] = (size >> 8) & 0xFF;
6695 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
6696 c->Request.CDBLen = 10;
6697 c->Request.type_attr_dir =
6698 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6699 c->Request.Timeout = 0;
6700 c->Request.CDB[0] = BMIC_READ;
6701 c->Request.CDB[6] = BMIC_IDENTIFY_PHYSICAL_DEVICE;
6702 c->Request.CDB[7] = (size >> 16) & 0xFF;
6703 c->Request.CDB[8] = (size >> 8) & 0XFF;
6705 case BMIC_SENSE_SUBSYSTEM_INFORMATION:
6706 c->Request.CDBLen = 10;
6707 c->Request.type_attr_dir =
6708 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6709 c->Request.Timeout = 0;
6710 c->Request.CDB[0] = BMIC_READ;
6711 c->Request.CDB[6] = BMIC_SENSE_SUBSYSTEM_INFORMATION;
6712 c->Request.CDB[7] = (size >> 16) & 0xFF;
6713 c->Request.CDB[8] = (size >> 8) & 0XFF;
6715 case BMIC_SENSE_STORAGE_BOX_PARAMS:
6716 c->Request.CDBLen = 10;
6717 c->Request.type_attr_dir =
6718 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6719 c->Request.Timeout = 0;
6720 c->Request.CDB[0] = BMIC_READ;
6721 c->Request.CDB[6] = BMIC_SENSE_STORAGE_BOX_PARAMS;
6722 c->Request.CDB[7] = (size >> 16) & 0xFF;
6723 c->Request.CDB[8] = (size >> 8) & 0XFF;
6725 case BMIC_IDENTIFY_CONTROLLER:
6726 c->Request.CDBLen = 10;
6727 c->Request.type_attr_dir =
6728 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6729 c->Request.Timeout = 0;
6730 c->Request.CDB[0] = BMIC_READ;
6731 c->Request.CDB[1] = 0;
6732 c->Request.CDB[2] = 0;
6733 c->Request.CDB[3] = 0;
6734 c->Request.CDB[4] = 0;
6735 c->Request.CDB[5] = 0;
6736 c->Request.CDB[6] = BMIC_IDENTIFY_CONTROLLER;
6737 c->Request.CDB[7] = (size >> 16) & 0xFF;
6738 c->Request.CDB[8] = (size >> 8) & 0XFF;
6739 c->Request.CDB[9] = 0;
6742 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd);
6745 } else if (cmd_type == TYPE_MSG) {
6748 case HPSA_PHYS_TARGET_RESET:
6749 c->Request.CDBLen = 16;
6750 c->Request.type_attr_dir =
6751 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6752 c->Request.Timeout = 0; /* Don't time out */
6753 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
6754 c->Request.CDB[0] = HPSA_RESET;
6755 c->Request.CDB[1] = HPSA_TARGET_RESET_TYPE;
6756 /* Physical target reset needs no control bytes 4-7*/
6757 c->Request.CDB[4] = 0x00;
6758 c->Request.CDB[5] = 0x00;
6759 c->Request.CDB[6] = 0x00;
6760 c->Request.CDB[7] = 0x00;
6762 case HPSA_DEVICE_RESET_MSG:
6763 c->Request.CDBLen = 16;
6764 c->Request.type_attr_dir =
6765 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6766 c->Request.Timeout = 0; /* Don't time out */
6767 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
6768 c->Request.CDB[0] = cmd;
6769 c->Request.CDB[1] = HPSA_RESET_TYPE_LUN;
6770 /* If bytes 4-7 are zero, it means reset the */
6772 c->Request.CDB[4] = 0x00;
6773 c->Request.CDB[5] = 0x00;
6774 c->Request.CDB[6] = 0x00;
6775 c->Request.CDB[7] = 0x00;
6778 dev_warn(&h->pdev->dev, "unknown message type %d\n",
6783 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type);
6787 switch (GET_DIR(c->Request.type_attr_dir)) {
6789 dir = DMA_FROM_DEVICE;
6792 dir = DMA_TO_DEVICE;
6798 dir = DMA_BIDIRECTIONAL;
6800 if (hpsa_map_one(h->pdev, c, buff, size, dir))
6806 * Map (physical) PCI mem into (virtual) kernel space
6808 static void __iomem *remap_pci_mem(ulong base, ulong size)
6810 ulong page_base = ((ulong) base) & PAGE_MASK;
6811 ulong page_offs = ((ulong) base) - page_base;
6812 void __iomem *page_remapped = ioremap_nocache(page_base,
6815 return page_remapped ? (page_remapped + page_offs) : NULL;
6818 static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q)
6820 return h->access.command_completed(h, q);
6823 static inline bool interrupt_pending(struct ctlr_info *h)
6825 return h->access.intr_pending(h);
6828 static inline long interrupt_not_for_us(struct ctlr_info *h)
6830 return (h->access.intr_pending(h) == 0) ||
6831 (h->interrupts_enabled == 0);
6834 static inline int bad_tag(struct ctlr_info *h, u32 tag_index,
6837 if (unlikely(tag_index >= h->nr_cmds)) {
6838 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag);
6844 static inline void finish_cmd(struct CommandList *c)
6846 dial_up_lockup_detection_on_fw_flash_complete(c->h, c);
6847 if (likely(c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_SCSI
6848 || c->cmd_type == CMD_IOACCEL2))
6849 complete_scsi_command(c);
6850 else if (c->cmd_type == CMD_IOCTL_PEND || c->cmd_type == IOACCEL2_TMF)
6851 complete(c->waiting);
6854 /* process completion of an indexed ("direct lookup") command */
6855 static inline void process_indexed_cmd(struct ctlr_info *h,
6859 struct CommandList *c;
6861 tag_index = raw_tag >> DIRECT_LOOKUP_SHIFT;
6862 if (!bad_tag(h, tag_index, raw_tag)) {
6863 c = h->cmd_pool + tag_index;
6868 /* Some controllers, like p400, will give us one interrupt
6869 * after a soft reset, even if we turned interrupts off.
6870 * Only need to check for this in the hpsa_xxx_discard_completions
6873 static int ignore_bogus_interrupt(struct ctlr_info *h)
6875 if (likely(!reset_devices))
6878 if (likely(h->interrupts_enabled))
6881 dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled "
6882 "(known firmware bug.) Ignoring.\n");
6888 * Convert &h->q[x] (passed to interrupt handlers) back to h.
6889 * Relies on (h-q[x] == x) being true for x such that
6890 * 0 <= x < MAX_REPLY_QUEUES.
6892 static struct ctlr_info *queue_to_hba(u8 *queue)
6894 return container_of((queue - *queue), struct ctlr_info, q[0]);
6897 static irqreturn_t hpsa_intx_discard_completions(int irq, void *queue)
6899 struct ctlr_info *h = queue_to_hba(queue);
6900 u8 q = *(u8 *) queue;
6903 if (ignore_bogus_interrupt(h))
6906 if (interrupt_not_for_us(h))
6908 h->last_intr_timestamp = get_jiffies_64();
6909 while (interrupt_pending(h)) {
6910 raw_tag = get_next_completion(h, q);
6911 while (raw_tag != FIFO_EMPTY)
6912 raw_tag = next_command(h, q);
6917 static irqreturn_t hpsa_msix_discard_completions(int irq, void *queue)
6919 struct ctlr_info *h = queue_to_hba(queue);
6921 u8 q = *(u8 *) queue;
6923 if (ignore_bogus_interrupt(h))
6926 h->last_intr_timestamp = get_jiffies_64();
6927 raw_tag = get_next_completion(h, q);
6928 while (raw_tag != FIFO_EMPTY)
6929 raw_tag = next_command(h, q);
6933 static irqreturn_t do_hpsa_intr_intx(int irq, void *queue)
6935 struct ctlr_info *h = queue_to_hba((u8 *) queue);
6937 u8 q = *(u8 *) queue;
6939 if (interrupt_not_for_us(h))
6941 h->last_intr_timestamp = get_jiffies_64();
6942 while (interrupt_pending(h)) {
6943 raw_tag = get_next_completion(h, q);
6944 while (raw_tag != FIFO_EMPTY) {
6945 process_indexed_cmd(h, raw_tag);
6946 raw_tag = next_command(h, q);
6952 static irqreturn_t do_hpsa_intr_msi(int irq, void *queue)
6954 struct ctlr_info *h = queue_to_hba(queue);
6956 u8 q = *(u8 *) queue;
6958 h->last_intr_timestamp = get_jiffies_64();
6959 raw_tag = get_next_completion(h, q);
6960 while (raw_tag != FIFO_EMPTY) {
6961 process_indexed_cmd(h, raw_tag);
6962 raw_tag = next_command(h, q);
6967 /* Send a message CDB to the firmware. Careful, this only works
6968 * in simple mode, not performant mode due to the tag lookup.
6969 * We only ever use this immediately after a controller reset.
6971 static int hpsa_message(struct pci_dev *pdev, unsigned char opcode,
6975 struct CommandListHeader CommandHeader;
6976 struct RequestBlock Request;
6977 struct ErrDescriptor ErrorDescriptor;
6979 struct Command *cmd;
6980 static const size_t cmd_sz = sizeof(*cmd) +
6981 sizeof(cmd->ErrorDescriptor);
6985 void __iomem *vaddr;
6988 vaddr = pci_ioremap_bar(pdev, 0);
6992 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
6993 * CCISS commands, so they must be allocated from the lower 4GiB of
6996 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
7002 cmd = dma_alloc_coherent(&pdev->dev, cmd_sz, &paddr64, GFP_KERNEL);
7008 /* This must fit, because of the 32-bit consistent DMA mask. Also,
7009 * although there's no guarantee, we assume that the address is at
7010 * least 4-byte aligned (most likely, it's page-aligned).
7012 paddr32 = cpu_to_le32(paddr64);
7014 cmd->CommandHeader.ReplyQueue = 0;
7015 cmd->CommandHeader.SGList = 0;
7016 cmd->CommandHeader.SGTotal = cpu_to_le16(0);
7017 cmd->CommandHeader.tag = cpu_to_le64(paddr64);
7018 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);
7020 cmd->Request.CDBLen = 16;
7021 cmd->Request.type_attr_dir =
7022 TYPE_ATTR_DIR(TYPE_MSG, ATTR_HEADOFQUEUE, XFER_NONE);
7023 cmd->Request.Timeout = 0; /* Don't time out */
7024 cmd->Request.CDB[0] = opcode;
7025 cmd->Request.CDB[1] = type;
7026 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */
7027 cmd->ErrorDescriptor.Addr =
7028 cpu_to_le64((le32_to_cpu(paddr32) + sizeof(*cmd)));
7029 cmd->ErrorDescriptor.Len = cpu_to_le32(sizeof(struct ErrorInfo));
7031 writel(le32_to_cpu(paddr32), vaddr + SA5_REQUEST_PORT_OFFSET);
7033 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) {
7034 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
7035 if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr64)
7037 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS);
7042 /* we leak the DMA buffer here ... no choice since the controller could
7043 * still complete the command.
7045 if (i == HPSA_MSG_SEND_RETRY_LIMIT) {
7046 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n",
7051 dma_free_coherent(&pdev->dev, cmd_sz, cmd, paddr64);
7053 if (tag & HPSA_ERROR_BIT) {
7054 dev_err(&pdev->dev, "controller message %02x:%02x failed\n",
7059 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n",
7064 #define hpsa_noop(p) hpsa_message(p, 3, 0)
7066 static int hpsa_controller_hard_reset(struct pci_dev *pdev,
7067 void __iomem *vaddr, u32 use_doorbell)
7071 /* For everything after the P600, the PCI power state method
7072 * of resetting the controller doesn't work, so we have this
7073 * other way using the doorbell register.
7075 dev_info(&pdev->dev, "using doorbell to reset controller\n");
7076 writel(use_doorbell, vaddr + SA5_DOORBELL);
7078 /* PMC hardware guys tell us we need a 10 second delay after
7079 * doorbell reset and before any attempt to talk to the board
7080 * at all to ensure that this actually works and doesn't fall
7081 * over in some weird corner cases.
7084 } else { /* Try to do it the PCI power state way */
7086 /* Quoting from the Open CISS Specification: "The Power
7087 * Management Control/Status Register (CSR) controls the power
7088 * state of the device. The normal operating state is D0,
7089 * CSR=00h. The software off state is D3, CSR=03h. To reset
7090 * the controller, place the interface device in D3 then to D0,
7091 * this causes a secondary PCI reset which will reset the
7096 dev_info(&pdev->dev, "using PCI PM to reset controller\n");
7098 /* enter the D3hot power management state */
7099 rc = pci_set_power_state(pdev, PCI_D3hot);
7105 /* enter the D0 power management state */
7106 rc = pci_set_power_state(pdev, PCI_D0);
7111 * The P600 requires a small delay when changing states.
7112 * Otherwise we may think the board did not reset and we bail.
7113 * This for kdump only and is particular to the P600.
7120 static void init_driver_version(char *driver_version, int len)
7122 memset(driver_version, 0, len);
7123 strncpy(driver_version, HPSA " " HPSA_DRIVER_VERSION, len - 1);
7126 static int write_driver_ver_to_cfgtable(struct CfgTable __iomem *cfgtable)
7128 char *driver_version;
7129 int i, size = sizeof(cfgtable->driver_version);
7131 driver_version = kmalloc(size, GFP_KERNEL);
7132 if (!driver_version)
7135 init_driver_version(driver_version, size);
7136 for (i = 0; i < size; i++)
7137 writeb(driver_version[i], &cfgtable->driver_version[i]);
7138 kfree(driver_version);
7142 static void read_driver_ver_from_cfgtable(struct CfgTable __iomem *cfgtable,
7143 unsigned char *driver_ver)
7147 for (i = 0; i < sizeof(cfgtable->driver_version); i++)
7148 driver_ver[i] = readb(&cfgtable->driver_version[i]);
7151 static int controller_reset_failed(struct CfgTable __iomem *cfgtable)
7154 char *driver_ver, *old_driver_ver;
7155 int rc, size = sizeof(cfgtable->driver_version);
7157 old_driver_ver = kmalloc_array(2, size, GFP_KERNEL);
7158 if (!old_driver_ver)
7160 driver_ver = old_driver_ver + size;
7162 /* After a reset, the 32 bytes of "driver version" in the cfgtable
7163 * should have been changed, otherwise we know the reset failed.
7165 init_driver_version(old_driver_ver, size);
7166 read_driver_ver_from_cfgtable(cfgtable, driver_ver);
7167 rc = !memcmp(driver_ver, old_driver_ver, size);
7168 kfree(old_driver_ver);
7171 /* This does a hard reset of the controller using PCI power management
7172 * states or the using the doorbell register.
7174 static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev, u32 board_id)
7178 u64 cfg_base_addr_index;
7179 void __iomem *vaddr;
7180 unsigned long paddr;
7181 u32 misc_fw_support;
7183 struct CfgTable __iomem *cfgtable;
7185 u16 command_register;
7187 /* For controllers as old as the P600, this is very nearly
7190 * pci_save_state(pci_dev);
7191 * pci_set_power_state(pci_dev, PCI_D3hot);
7192 * pci_set_power_state(pci_dev, PCI_D0);
7193 * pci_restore_state(pci_dev);
7195 * For controllers newer than the P600, the pci power state
7196 * method of resetting doesn't work so we have another way
7197 * using the doorbell register.
7200 if (!ctlr_is_resettable(board_id)) {
7201 dev_warn(&pdev->dev, "Controller not resettable\n");
7205 /* if controller is soft- but not hard resettable... */
7206 if (!ctlr_is_hard_resettable(board_id))
7207 return -ENOTSUPP; /* try soft reset later. */
7209 /* Save the PCI command register */
7210 pci_read_config_word(pdev, 4, &command_register);
7211 pci_save_state(pdev);
7213 /* find the first memory BAR, so we can find the cfg table */
7214 rc = hpsa_pci_find_memory_BAR(pdev, &paddr);
7217 vaddr = remap_pci_mem(paddr, 0x250);
7221 /* find cfgtable in order to check if reset via doorbell is supported */
7222 rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr,
7223 &cfg_base_addr_index, &cfg_offset);
7226 cfgtable = remap_pci_mem(pci_resource_start(pdev,
7227 cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable));
7232 rc = write_driver_ver_to_cfgtable(cfgtable);
7234 goto unmap_cfgtable;
7236 /* If reset via doorbell register is supported, use that.
7237 * There are two such methods. Favor the newest method.
7239 misc_fw_support = readl(&cfgtable->misc_fw_support);
7240 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2;
7242 use_doorbell = DOORBELL_CTLR_RESET2;
7244 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET;
7246 dev_warn(&pdev->dev,
7247 "Soft reset not supported. Firmware update is required.\n");
7248 rc = -ENOTSUPP; /* try soft reset */
7249 goto unmap_cfgtable;
7253 rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell);
7255 goto unmap_cfgtable;
7257 pci_restore_state(pdev);
7258 pci_write_config_word(pdev, 4, command_register);
7260 /* Some devices (notably the HP Smart Array 5i Controller)
7261 need a little pause here */
7262 msleep(HPSA_POST_RESET_PAUSE_MSECS);
7264 rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY);
7266 dev_warn(&pdev->dev,
7267 "Failed waiting for board to become ready after hard reset\n");
7268 goto unmap_cfgtable;
7271 rc = controller_reset_failed(vaddr);
7273 goto unmap_cfgtable;
7275 dev_warn(&pdev->dev, "Unable to successfully reset "
7276 "controller. Will try soft reset.\n");
7279 dev_info(&pdev->dev, "board ready after hard reset.\n");
7291 * We cannot read the structure directly, for portability we must use
7293 * This is for debug only.
7295 static void print_cfg_table(struct device *dev, struct CfgTable __iomem *tb)
7301 dev_info(dev, "Controller Configuration information\n");
7302 dev_info(dev, "------------------------------------\n");
7303 for (i = 0; i < 4; i++)
7304 temp_name[i] = readb(&(tb->Signature[i]));
7305 temp_name[4] = '\0';
7306 dev_info(dev, " Signature = %s\n", temp_name);
7307 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence)));
7308 dev_info(dev, " Transport methods supported = 0x%x\n",
7309 readl(&(tb->TransportSupport)));
7310 dev_info(dev, " Transport methods active = 0x%x\n",
7311 readl(&(tb->TransportActive)));
7312 dev_info(dev, " Requested transport Method = 0x%x\n",
7313 readl(&(tb->HostWrite.TransportRequest)));
7314 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n",
7315 readl(&(tb->HostWrite.CoalIntDelay)));
7316 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n",
7317 readl(&(tb->HostWrite.CoalIntCount)));
7318 dev_info(dev, " Max outstanding commands = %d\n",
7319 readl(&(tb->CmdsOutMax)));
7320 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
7321 for (i = 0; i < 16; i++)
7322 temp_name[i] = readb(&(tb->ServerName[i]));
7323 temp_name[16] = '\0';
7324 dev_info(dev, " Server Name = %s\n", temp_name);
7325 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n",
7326 readl(&(tb->HeartBeat)));
7327 #endif /* HPSA_DEBUG */
7330 static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
7332 int i, offset, mem_type, bar_type;
7334 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
7337 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
7338 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
7339 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
7342 mem_type = pci_resource_flags(pdev, i) &
7343 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
7345 case PCI_BASE_ADDRESS_MEM_TYPE_32:
7346 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
7347 offset += 4; /* 32 bit */
7349 case PCI_BASE_ADDRESS_MEM_TYPE_64:
7352 default: /* reserved in PCI 2.2 */
7353 dev_warn(&pdev->dev,
7354 "base address is invalid\n");
7359 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
7365 static void hpsa_disable_interrupt_mode(struct ctlr_info *h)
7367 pci_free_irq_vectors(h->pdev);
7368 h->msix_vectors = 0;
7371 static void hpsa_setup_reply_map(struct ctlr_info *h)
7373 const struct cpumask *mask;
7374 unsigned int queue, cpu;
7376 for (queue = 0; queue < h->msix_vectors; queue++) {
7377 mask = pci_irq_get_affinity(h->pdev, queue);
7381 for_each_cpu(cpu, mask)
7382 h->reply_map[cpu] = queue;
7387 for_each_possible_cpu(cpu)
7388 h->reply_map[cpu] = 0;
7391 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
7392 * controllers that are capable. If not, we use legacy INTx mode.
7394 static int hpsa_interrupt_mode(struct ctlr_info *h)
7396 unsigned int flags = PCI_IRQ_LEGACY;
7399 /* Some boards advertise MSI but don't really support it */
7400 switch (h->board_id) {
7407 ret = pci_alloc_irq_vectors(h->pdev, 1, MAX_REPLY_QUEUES,
7408 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
7410 h->msix_vectors = ret;
7414 flags |= PCI_IRQ_MSI;
7418 ret = pci_alloc_irq_vectors(h->pdev, 1, 1, flags);
7424 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id,
7428 u32 subsystem_vendor_id, subsystem_device_id;
7430 subsystem_vendor_id = pdev->subsystem_vendor;
7431 subsystem_device_id = pdev->subsystem_device;
7432 *board_id = ((subsystem_device_id << 16) & 0xffff0000) |
7433 subsystem_vendor_id;
7436 *legacy_board = false;
7437 for (i = 0; i < ARRAY_SIZE(products); i++)
7438 if (*board_id == products[i].board_id) {
7439 if (products[i].access != &SA5A_access &&
7440 products[i].access != &SA5B_access)
7442 dev_warn(&pdev->dev,
7443 "legacy board ID: 0x%08x\n",
7446 *legacy_board = true;
7450 dev_warn(&pdev->dev, "unrecognized board ID: 0x%08x\n", *board_id);
7452 *legacy_board = true;
7453 return ARRAY_SIZE(products) - 1; /* generic unknown smart array */
7456 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
7457 unsigned long *memory_bar)
7461 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++)
7462 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
7463 /* addressing mode bits already removed */
7464 *memory_bar = pci_resource_start(pdev, i);
7465 dev_dbg(&pdev->dev, "memory BAR = %lx\n",
7469 dev_warn(&pdev->dev, "no memory BAR found\n");
7473 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
7479 iterations = HPSA_BOARD_READY_ITERATIONS;
7481 iterations = HPSA_BOARD_NOT_READY_ITERATIONS;
7483 for (i = 0; i < iterations; i++) {
7484 scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET);
7485 if (wait_for_ready) {
7486 if (scratchpad == HPSA_FIRMWARE_READY)
7489 if (scratchpad != HPSA_FIRMWARE_READY)
7492 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
7494 dev_warn(&pdev->dev, "board not ready, timed out.\n");
7498 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
7499 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
7502 *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET);
7503 *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET);
7504 *cfg_base_addr &= (u32) 0x0000ffff;
7505 *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr);
7506 if (*cfg_base_addr_index == -1) {
7507 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n");
7513 static void hpsa_free_cfgtables(struct ctlr_info *h)
7515 if (h->transtable) {
7516 iounmap(h->transtable);
7517 h->transtable = NULL;
7520 iounmap(h->cfgtable);
7525 /* Find and map CISS config table and transfer table
7526 + * several items must be unmapped (freed) later
7528 static int hpsa_find_cfgtables(struct ctlr_info *h)
7532 u64 cfg_base_addr_index;
7536 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
7537 &cfg_base_addr_index, &cfg_offset);
7540 h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
7541 cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable));
7543 dev_err(&h->pdev->dev, "Failed mapping cfgtable\n");
7546 rc = write_driver_ver_to_cfgtable(h->cfgtable);
7549 /* Find performant mode table. */
7550 trans_offset = readl(&h->cfgtable->TransMethodOffset);
7551 h->transtable = remap_pci_mem(pci_resource_start(h->pdev,
7552 cfg_base_addr_index)+cfg_offset+trans_offset,
7553 sizeof(*h->transtable));
7554 if (!h->transtable) {
7555 dev_err(&h->pdev->dev, "Failed mapping transfer table\n");
7556 hpsa_free_cfgtables(h);
7562 static void hpsa_get_max_perf_mode_cmds(struct ctlr_info *h)
7564 #define MIN_MAX_COMMANDS 16
7565 BUILD_BUG_ON(MIN_MAX_COMMANDS <= HPSA_NRESERVED_CMDS);
7567 h->max_commands = readl(&h->cfgtable->MaxPerformantModeCommands);
7569 /* Limit commands in memory limited kdump scenario. */
7570 if (reset_devices && h->max_commands > 32)
7571 h->max_commands = 32;
7573 if (h->max_commands < MIN_MAX_COMMANDS) {
7574 dev_warn(&h->pdev->dev,
7575 "Controller reports max supported commands of %d Using %d instead. Ensure that firmware is up to date.\n",
7578 h->max_commands = MIN_MAX_COMMANDS;
7582 /* If the controller reports that the total max sg entries is greater than 512,
7583 * then we know that chained SG blocks work. (Original smart arrays did not
7584 * support chained SG blocks and would return zero for max sg entries.)
7586 static int hpsa_supports_chained_sg_blocks(struct ctlr_info *h)
7588 return h->maxsgentries > 512;
7591 /* Interrogate the hardware for some limits:
7592 * max commands, max SG elements without chaining, and with chaining,
7593 * SG chain block size, etc.
7595 static void hpsa_find_board_params(struct ctlr_info *h)
7597 hpsa_get_max_perf_mode_cmds(h);
7598 h->nr_cmds = h->max_commands;
7599 h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements));
7600 h->fw_support = readl(&(h->cfgtable->misc_fw_support));
7601 if (hpsa_supports_chained_sg_blocks(h)) {
7602 /* Limit in-command s/g elements to 32 save dma'able memory. */
7603 h->max_cmd_sg_entries = 32;
7604 h->chainsize = h->maxsgentries - h->max_cmd_sg_entries;
7605 h->maxsgentries--; /* save one for chain pointer */
7608 * Original smart arrays supported at most 31 s/g entries
7609 * embedded inline in the command (trying to use more
7610 * would lock up the controller)
7612 h->max_cmd_sg_entries = 31;
7613 h->maxsgentries = 31; /* default to traditional values */
7617 /* Find out what task management functions are supported and cache */
7618 h->TMFSupportFlags = readl(&(h->cfgtable->TMFSupportFlags));
7619 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags))
7620 dev_warn(&h->pdev->dev, "Physical aborts not supported\n");
7621 if (!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
7622 dev_warn(&h->pdev->dev, "Logical aborts not supported\n");
7623 if (!(HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags))
7624 dev_warn(&h->pdev->dev, "HP SSD Smart Path aborts not supported\n");
7627 static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)
7629 if (!check_signature(h->cfgtable->Signature, "CISS", 4)) {
7630 dev_err(&h->pdev->dev, "not a valid CISS config table\n");
7636 static inline void hpsa_set_driver_support_bits(struct ctlr_info *h)
7640 driver_support = readl(&(h->cfgtable->driver_support));
7641 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
7643 driver_support |= ENABLE_SCSI_PREFETCH;
7645 driver_support |= ENABLE_UNIT_ATTN;
7646 writel(driver_support, &(h->cfgtable->driver_support));
7649 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
7650 * in a prefetch beyond physical memory.
7652 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h)
7656 if (h->board_id != 0x3225103C)
7658 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
7659 dma_prefetch |= 0x8000;
7660 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
7663 static int hpsa_wait_for_clear_event_notify_ack(struct ctlr_info *h)
7667 unsigned long flags;
7668 /* wait until the clear_event_notify bit 6 is cleared by controller. */
7669 for (i = 0; i < MAX_CLEAR_EVENT_WAIT; i++) {
7670 spin_lock_irqsave(&h->lock, flags);
7671 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7672 spin_unlock_irqrestore(&h->lock, flags);
7673 if (!(doorbell_value & DOORBELL_CLEAR_EVENTS))
7675 /* delay and try again */
7676 msleep(CLEAR_EVENT_WAIT_INTERVAL);
7683 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h)
7687 unsigned long flags;
7689 /* under certain very rare conditions, this can take awhile.
7690 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
7691 * as we enter this code.)
7693 for (i = 0; i < MAX_MODE_CHANGE_WAIT; i++) {
7694 if (h->remove_in_progress)
7696 spin_lock_irqsave(&h->lock, flags);
7697 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7698 spin_unlock_irqrestore(&h->lock, flags);
7699 if (!(doorbell_value & CFGTBL_ChangeReq))
7701 /* delay and try again */
7702 msleep(MODE_CHANGE_WAIT_INTERVAL);
7709 /* return -ENODEV or other reason on error, 0 on success */
7710 static int hpsa_enter_simple_mode(struct ctlr_info *h)
7714 trans_support = readl(&(h->cfgtable->TransportSupport));
7715 if (!(trans_support & SIMPLE_MODE))
7718 h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
7720 /* Update the field, and then ring the doorbell */
7721 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
7722 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
7723 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
7724 if (hpsa_wait_for_mode_change_ack(h))
7726 print_cfg_table(&h->pdev->dev, h->cfgtable);
7727 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
7729 h->transMethod = CFGTBL_Trans_Simple;
7732 dev_err(&h->pdev->dev, "failed to enter simple mode\n");
7736 /* free items allocated or mapped by hpsa_pci_init */
7737 static void hpsa_free_pci_init(struct ctlr_info *h)
7739 hpsa_free_cfgtables(h); /* pci_init 4 */
7740 iounmap(h->vaddr); /* pci_init 3 */
7742 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
7744 * call pci_disable_device before pci_release_regions per
7745 * Documentation/PCI/pci.txt
7747 pci_disable_device(h->pdev); /* pci_init 1 */
7748 pci_release_regions(h->pdev); /* pci_init 2 */
7751 /* several items must be freed later */
7752 static int hpsa_pci_init(struct ctlr_info *h)
7754 int prod_index, err;
7757 prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id, &legacy_board);
7760 h->product_name = products[prod_index].product_name;
7761 h->access = *(products[prod_index].access);
7762 h->legacy_board = legacy_board;
7763 pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S |
7764 PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
7766 err = pci_enable_device(h->pdev);
7768 dev_err(&h->pdev->dev, "failed to enable PCI device\n");
7769 pci_disable_device(h->pdev);
7773 err = pci_request_regions(h->pdev, HPSA);
7775 dev_err(&h->pdev->dev,
7776 "failed to obtain PCI resources\n");
7777 pci_disable_device(h->pdev);
7781 pci_set_master(h->pdev);
7783 err = hpsa_interrupt_mode(h);
7787 /* setup mapping between CPU and reply queue */
7788 hpsa_setup_reply_map(h);
7790 err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr);
7792 goto clean2; /* intmode+region, pci */
7793 h->vaddr = remap_pci_mem(h->paddr, 0x250);
7795 dev_err(&h->pdev->dev, "failed to remap PCI mem\n");
7797 goto clean2; /* intmode+region, pci */
7799 err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
7801 goto clean3; /* vaddr, intmode+region, pci */
7802 err = hpsa_find_cfgtables(h);
7804 goto clean3; /* vaddr, intmode+region, pci */
7805 hpsa_find_board_params(h);
7807 if (!hpsa_CISS_signature_present(h)) {
7809 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
7811 hpsa_set_driver_support_bits(h);
7812 hpsa_p600_dma_prefetch_quirk(h);
7813 err = hpsa_enter_simple_mode(h);
7815 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
7818 clean4: /* cfgtables, vaddr, intmode+region, pci */
7819 hpsa_free_cfgtables(h);
7820 clean3: /* vaddr, intmode+region, pci */
7823 clean2: /* intmode+region, pci */
7824 hpsa_disable_interrupt_mode(h);
7827 * call pci_disable_device before pci_release_regions per
7828 * Documentation/PCI/pci.txt
7830 pci_disable_device(h->pdev);
7831 pci_release_regions(h->pdev);
7835 static void hpsa_hba_inquiry(struct ctlr_info *h)
7839 #define HBA_INQUIRY_BYTE_COUNT 64
7840 h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL);
7841 if (!h->hba_inquiry_data)
7843 rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0,
7844 h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT);
7846 kfree(h->hba_inquiry_data);
7847 h->hba_inquiry_data = NULL;
7851 static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id)
7854 void __iomem *vaddr;
7859 /* kdump kernel is loading, we don't know in which state is
7860 * the pci interface. The dev->enable_cnt is equal zero
7861 * so we call enable+disable, wait a while and switch it on.
7863 rc = pci_enable_device(pdev);
7865 dev_warn(&pdev->dev, "Failed to enable PCI device\n");
7868 pci_disable_device(pdev);
7869 msleep(260); /* a randomly chosen number */
7870 rc = pci_enable_device(pdev);
7872 dev_warn(&pdev->dev, "failed to enable device.\n");
7876 pci_set_master(pdev);
7878 vaddr = pci_ioremap_bar(pdev, 0);
7879 if (vaddr == NULL) {
7883 writel(SA5_INTR_OFF, vaddr + SA5_REPLY_INTR_MASK_OFFSET);
7886 /* Reset the controller with a PCI power-cycle or via doorbell */
7887 rc = hpsa_kdump_hard_reset_controller(pdev, board_id);
7889 /* -ENOTSUPP here means we cannot reset the controller
7890 * but it's already (and still) up and running in
7891 * "performant mode". Or, it might be 640x, which can't reset
7892 * due to concerns about shared bbwc between 6402/6404 pair.
7897 /* Now try to get the controller to respond to a no-op */
7898 dev_info(&pdev->dev, "Waiting for controller to respond to no-op\n");
7899 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) {
7900 if (hpsa_noop(pdev) == 0)
7903 dev_warn(&pdev->dev, "no-op failed%s\n",
7904 (i < 11 ? "; re-trying" : ""));
7909 pci_disable_device(pdev);
7913 static void hpsa_free_cmd_pool(struct ctlr_info *h)
7915 kfree(h->cmd_pool_bits);
7916 h->cmd_pool_bits = NULL;
7918 dma_free_coherent(&h->pdev->dev,
7919 h->nr_cmds * sizeof(struct CommandList),
7921 h->cmd_pool_dhandle);
7923 h->cmd_pool_dhandle = 0;
7925 if (h->errinfo_pool) {
7926 dma_free_coherent(&h->pdev->dev,
7927 h->nr_cmds * sizeof(struct ErrorInfo),
7929 h->errinfo_pool_dhandle);
7930 h->errinfo_pool = NULL;
7931 h->errinfo_pool_dhandle = 0;
7935 static int hpsa_alloc_cmd_pool(struct ctlr_info *h)
7937 h->cmd_pool_bits = kcalloc(DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG),
7938 sizeof(unsigned long),
7940 h->cmd_pool = dma_alloc_coherent(&h->pdev->dev,
7941 h->nr_cmds * sizeof(*h->cmd_pool),
7942 &h->cmd_pool_dhandle, GFP_KERNEL);
7943 h->errinfo_pool = dma_alloc_coherent(&h->pdev->dev,
7944 h->nr_cmds * sizeof(*h->errinfo_pool),
7945 &h->errinfo_pool_dhandle, GFP_KERNEL);
7946 if ((h->cmd_pool_bits == NULL)
7947 || (h->cmd_pool == NULL)
7948 || (h->errinfo_pool == NULL)) {
7949 dev_err(&h->pdev->dev, "out of memory in %s", __func__);
7952 hpsa_preinitialize_commands(h);
7955 hpsa_free_cmd_pool(h);
7959 /* clear affinity hints and free MSI-X, MSI, or legacy INTx vectors */
7960 static void hpsa_free_irqs(struct ctlr_info *h)
7964 if (!h->msix_vectors || h->intr_mode != PERF_MODE_INT) {
7965 /* Single reply queue, only one irq to free */
7966 free_irq(pci_irq_vector(h->pdev, 0), &h->q[h->intr_mode]);
7967 h->q[h->intr_mode] = 0;
7971 for (i = 0; i < h->msix_vectors; i++) {
7972 free_irq(pci_irq_vector(h->pdev, i), &h->q[i]);
7975 for (; i < MAX_REPLY_QUEUES; i++)
7979 /* returns 0 on success; cleans up and returns -Enn on error */
7980 static int hpsa_request_irqs(struct ctlr_info *h,
7981 irqreturn_t (*msixhandler)(int, void *),
7982 irqreturn_t (*intxhandler)(int, void *))
7987 * initialize h->q[x] = x so that interrupt handlers know which
7990 for (i = 0; i < MAX_REPLY_QUEUES; i++)
7993 if (h->intr_mode == PERF_MODE_INT && h->msix_vectors > 0) {
7994 /* If performant mode and MSI-X, use multiple reply queues */
7995 for (i = 0; i < h->msix_vectors; i++) {
7996 sprintf(h->intrname[i], "%s-msix%d", h->devname, i);
7997 rc = request_irq(pci_irq_vector(h->pdev, i), msixhandler,
8003 dev_err(&h->pdev->dev,
8004 "failed to get irq %d for %s\n",
8005 pci_irq_vector(h->pdev, i), h->devname);
8006 for (j = 0; j < i; j++) {
8007 free_irq(pci_irq_vector(h->pdev, j), &h->q[j]);
8010 for (; j < MAX_REPLY_QUEUES; j++)
8016 /* Use single reply pool */
8017 if (h->msix_vectors > 0 || h->pdev->msi_enabled) {
8018 sprintf(h->intrname[0], "%s-msi%s", h->devname,
8019 h->msix_vectors ? "x" : "");
8020 rc = request_irq(pci_irq_vector(h->pdev, 0),
8023 &h->q[h->intr_mode]);
8025 sprintf(h->intrname[h->intr_mode],
8026 "%s-intx", h->devname);
8027 rc = request_irq(pci_irq_vector(h->pdev, 0),
8028 intxhandler, IRQF_SHARED,
8030 &h->q[h->intr_mode]);
8034 dev_err(&h->pdev->dev, "failed to get irq %d for %s\n",
8035 pci_irq_vector(h->pdev, 0), h->devname);
8042 static int hpsa_kdump_soft_reset(struct ctlr_info *h)
8045 hpsa_send_host_reset(h, RAID_CTLR_LUNID, HPSA_RESET_TYPE_CONTROLLER);
8047 dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n");
8048 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY);
8050 dev_warn(&h->pdev->dev, "Soft reset had no effect.\n");
8054 dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n");
8055 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
8057 dev_warn(&h->pdev->dev, "Board failed to become ready "
8058 "after soft reset.\n");
8065 static void hpsa_free_reply_queues(struct ctlr_info *h)
8069 for (i = 0; i < h->nreply_queues; i++) {
8070 if (!h->reply_queue[i].head)
8072 dma_free_coherent(&h->pdev->dev,
8073 h->reply_queue_size,
8074 h->reply_queue[i].head,
8075 h->reply_queue[i].busaddr);
8076 h->reply_queue[i].head = NULL;
8077 h->reply_queue[i].busaddr = 0;
8079 h->reply_queue_size = 0;
8082 static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h)
8084 hpsa_free_performant_mode(h); /* init_one 7 */
8085 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
8086 hpsa_free_cmd_pool(h); /* init_one 5 */
8087 hpsa_free_irqs(h); /* init_one 4 */
8088 scsi_host_put(h->scsi_host); /* init_one 3 */
8089 h->scsi_host = NULL; /* init_one 3 */
8090 hpsa_free_pci_init(h); /* init_one 2_5 */
8091 free_percpu(h->lockup_detected); /* init_one 2 */
8092 h->lockup_detected = NULL; /* init_one 2 */
8093 if (h->resubmit_wq) {
8094 destroy_workqueue(h->resubmit_wq); /* init_one 1 */
8095 h->resubmit_wq = NULL;
8097 if (h->rescan_ctlr_wq) {
8098 destroy_workqueue(h->rescan_ctlr_wq);
8099 h->rescan_ctlr_wq = NULL;
8101 kfree(h); /* init_one 1 */
8104 /* Called when controller lockup detected. */
8105 static void fail_all_outstanding_cmds(struct ctlr_info *h)
8108 struct CommandList *c;
8111 flush_workqueue(h->resubmit_wq); /* ensure all cmds are fully built */
8112 for (i = 0; i < h->nr_cmds; i++) {
8113 c = h->cmd_pool + i;
8114 refcount = atomic_inc_return(&c->refcount);
8116 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
8118 atomic_dec(&h->commands_outstanding);
8123 dev_warn(&h->pdev->dev,
8124 "failed %d commands in fail_all\n", failcount);
8127 static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value)
8131 for_each_online_cpu(cpu) {
8132 u32 *lockup_detected;
8133 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
8134 *lockup_detected = value;
8136 wmb(); /* be sure the per-cpu variables are out to memory */
8139 static void controller_lockup_detected(struct ctlr_info *h)
8141 unsigned long flags;
8142 u32 lockup_detected;
8144 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8145 spin_lock_irqsave(&h->lock, flags);
8146 lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
8147 if (!lockup_detected) {
8148 /* no heartbeat, but controller gave us a zero. */
8149 dev_warn(&h->pdev->dev,
8150 "lockup detected after %d but scratchpad register is zero\n",
8151 h->heartbeat_sample_interval / HZ);
8152 lockup_detected = 0xffffffff;
8154 set_lockup_detected_for_all_cpus(h, lockup_detected);
8155 spin_unlock_irqrestore(&h->lock, flags);
8156 dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x after %d\n",
8157 lockup_detected, h->heartbeat_sample_interval / HZ);
8158 if (lockup_detected == 0xffff0000) {
8159 dev_warn(&h->pdev->dev, "Telling controller to do a CHKPT\n");
8160 writel(DOORBELL_GENERATE_CHKPT, h->vaddr + SA5_DOORBELL);
8162 pci_disable_device(h->pdev);
8163 fail_all_outstanding_cmds(h);
8166 static int detect_controller_lockup(struct ctlr_info *h)
8170 unsigned long flags;
8172 now = get_jiffies_64();
8173 /* If we've received an interrupt recently, we're ok. */
8174 if (time_after64(h->last_intr_timestamp +
8175 (h->heartbeat_sample_interval), now))
8179 * If we've already checked the heartbeat recently, we're ok.
8180 * This could happen if someone sends us a signal. We
8181 * otherwise don't care about signals in this thread.
8183 if (time_after64(h->last_heartbeat_timestamp +
8184 (h->heartbeat_sample_interval), now))
8187 /* If heartbeat has not changed since we last looked, we're not ok. */
8188 spin_lock_irqsave(&h->lock, flags);
8189 heartbeat = readl(&h->cfgtable->HeartBeat);
8190 spin_unlock_irqrestore(&h->lock, flags);
8191 if (h->last_heartbeat == heartbeat) {
8192 controller_lockup_detected(h);
8197 h->last_heartbeat = heartbeat;
8198 h->last_heartbeat_timestamp = now;
8203 * Set ioaccel status for all ioaccel volumes.
8205 * Called from monitor controller worker (hpsa_event_monitor_worker)
8207 * A Volume (or Volumes that comprise an Array set may be undergoing a
8208 * transformation, so we will be turning off ioaccel for all volumes that
8209 * make up the Array.
8211 static void hpsa_set_ioaccel_status(struct ctlr_info *h)
8217 struct hpsa_scsi_dev_t *device;
8222 buf = kmalloc(64, GFP_KERNEL);
8227 * Run through current device list used during I/O requests.
8229 for (i = 0; i < h->ndevices; i++) {
8234 if (!hpsa_vpd_page_supported(h, device->scsi3addr,
8235 HPSA_VPD_LV_IOACCEL_STATUS))
8240 rc = hpsa_scsi_do_inquiry(h, device->scsi3addr,
8241 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS,
8246 ioaccel_status = buf[IOACCEL_STATUS_BYTE];
8247 device->offload_config =
8248 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT);
8249 if (device->offload_config)
8250 device->offload_to_be_enabled =
8251 !!(ioaccel_status & OFFLOAD_ENABLED_BIT);
8254 * Immediately turn off ioaccel for any volume the
8255 * controller tells us to. Some of the reasons could be:
8256 * transformation - change to the LVs of an Array.
8257 * degraded volume - component failure
8259 * If ioaccel is to be re-enabled, re-enable later during the
8260 * scan operation so the driver can get a fresh raidmap
8261 * before turning ioaccel back on.
8264 if (!device->offload_to_be_enabled)
8265 device->offload_enabled = 0;
8271 static void hpsa_ack_ctlr_events(struct ctlr_info *h)
8275 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
8278 /* Ask the controller to clear the events we're handling. */
8279 if ((h->transMethod & (CFGTBL_Trans_io_accel1
8280 | CFGTBL_Trans_io_accel2)) &&
8281 (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE ||
8282 h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)) {
8284 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE)
8285 event_type = "state change";
8286 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)
8287 event_type = "configuration change";
8288 /* Stop sending new RAID offload reqs via the IO accelerator */
8289 scsi_block_requests(h->scsi_host);
8290 hpsa_set_ioaccel_status(h);
8291 hpsa_drain_accel_commands(h);
8292 /* Set 'accelerator path config change' bit */
8293 dev_warn(&h->pdev->dev,
8294 "Acknowledging event: 0x%08x (HP SSD Smart Path %s)\n",
8295 h->events, event_type);
8296 writel(h->events, &(h->cfgtable->clear_event_notify));
8297 /* Set the "clear event notify field update" bit 6 */
8298 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
8299 /* Wait until ctlr clears 'clear event notify field', bit 6 */
8300 hpsa_wait_for_clear_event_notify_ack(h);
8301 scsi_unblock_requests(h->scsi_host);
8303 /* Acknowledge controller notification events. */
8304 writel(h->events, &(h->cfgtable->clear_event_notify));
8305 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
8306 hpsa_wait_for_clear_event_notify_ack(h);
8311 /* Check a register on the controller to see if there are configuration
8312 * changes (added/changed/removed logical drives, etc.) which mean that
8313 * we should rescan the controller for devices.
8314 * Also check flag for driver-initiated rescan.
8316 static int hpsa_ctlr_needs_rescan(struct ctlr_info *h)
8318 if (h->drv_req_rescan) {
8319 h->drv_req_rescan = 0;
8323 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
8326 h->events = readl(&(h->cfgtable->event_notify));
8327 return h->events & RESCAN_REQUIRED_EVENT_BITS;
8331 * Check if any of the offline devices have become ready
8333 static int hpsa_offline_devices_ready(struct ctlr_info *h)
8335 unsigned long flags;
8336 struct offline_device_entry *d;
8337 struct list_head *this, *tmp;
8339 spin_lock_irqsave(&h->offline_device_lock, flags);
8340 list_for_each_safe(this, tmp, &h->offline_device_list) {
8341 d = list_entry(this, struct offline_device_entry,
8343 spin_unlock_irqrestore(&h->offline_device_lock, flags);
8344 if (!hpsa_volume_offline(h, d->scsi3addr)) {
8345 spin_lock_irqsave(&h->offline_device_lock, flags);
8346 list_del(&d->offline_list);
8347 spin_unlock_irqrestore(&h->offline_device_lock, flags);
8350 spin_lock_irqsave(&h->offline_device_lock, flags);
8352 spin_unlock_irqrestore(&h->offline_device_lock, flags);
8356 static int hpsa_luns_changed(struct ctlr_info *h)
8358 int rc = 1; /* assume there are changes */
8359 struct ReportLUNdata *logdev = NULL;
8361 /* if we can't find out if lun data has changed,
8362 * assume that it has.
8365 if (!h->lastlogicals)
8368 logdev = kzalloc(sizeof(*logdev), GFP_KERNEL);
8372 if (hpsa_scsi_do_report_luns(h, 1, logdev, sizeof(*logdev), 0)) {
8373 dev_warn(&h->pdev->dev,
8374 "report luns failed, can't track lun changes.\n");
8377 if (memcmp(logdev, h->lastlogicals, sizeof(*logdev))) {
8378 dev_info(&h->pdev->dev,
8379 "Lun changes detected.\n");
8380 memcpy(h->lastlogicals, logdev, sizeof(*logdev));
8383 rc = 0; /* no changes detected. */
8389 static void hpsa_perform_rescan(struct ctlr_info *h)
8391 struct Scsi_Host *sh = NULL;
8392 unsigned long flags;
8395 * Do the scan after the reset
8397 spin_lock_irqsave(&h->reset_lock, flags);
8398 if (h->reset_in_progress) {
8399 h->drv_req_rescan = 1;
8400 spin_unlock_irqrestore(&h->reset_lock, flags);
8403 spin_unlock_irqrestore(&h->reset_lock, flags);
8405 sh = scsi_host_get(h->scsi_host);
8407 hpsa_scan_start(sh);
8409 h->drv_req_rescan = 0;
8414 * watch for controller events
8416 static void hpsa_event_monitor_worker(struct work_struct *work)
8418 struct ctlr_info *h = container_of(to_delayed_work(work),
8419 struct ctlr_info, event_monitor_work);
8420 unsigned long flags;
8422 spin_lock_irqsave(&h->lock, flags);
8423 if (h->remove_in_progress) {
8424 spin_unlock_irqrestore(&h->lock, flags);
8427 spin_unlock_irqrestore(&h->lock, flags);
8429 if (hpsa_ctlr_needs_rescan(h)) {
8430 hpsa_ack_ctlr_events(h);
8431 hpsa_perform_rescan(h);
8434 spin_lock_irqsave(&h->lock, flags);
8435 if (!h->remove_in_progress)
8436 schedule_delayed_work(&h->event_monitor_work,
8437 HPSA_EVENT_MONITOR_INTERVAL);
8438 spin_unlock_irqrestore(&h->lock, flags);
8441 static void hpsa_rescan_ctlr_worker(struct work_struct *work)
8443 unsigned long flags;
8444 struct ctlr_info *h = container_of(to_delayed_work(work),
8445 struct ctlr_info, rescan_ctlr_work);
8447 spin_lock_irqsave(&h->lock, flags);
8448 if (h->remove_in_progress) {
8449 spin_unlock_irqrestore(&h->lock, flags);
8452 spin_unlock_irqrestore(&h->lock, flags);
8454 if (h->drv_req_rescan || hpsa_offline_devices_ready(h)) {
8455 hpsa_perform_rescan(h);
8456 } else if (h->discovery_polling) {
8457 if (hpsa_luns_changed(h)) {
8458 dev_info(&h->pdev->dev,
8459 "driver discovery polling rescan.\n");
8460 hpsa_perform_rescan(h);
8463 spin_lock_irqsave(&h->lock, flags);
8464 if (!h->remove_in_progress)
8465 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
8466 h->heartbeat_sample_interval);
8467 spin_unlock_irqrestore(&h->lock, flags);
8470 static void hpsa_monitor_ctlr_worker(struct work_struct *work)
8472 unsigned long flags;
8473 struct ctlr_info *h = container_of(to_delayed_work(work),
8474 struct ctlr_info, monitor_ctlr_work);
8476 detect_controller_lockup(h);
8477 if (lockup_detected(h))
8480 spin_lock_irqsave(&h->lock, flags);
8481 if (!h->remove_in_progress)
8482 schedule_delayed_work(&h->monitor_ctlr_work,
8483 h->heartbeat_sample_interval);
8484 spin_unlock_irqrestore(&h->lock, flags);
8487 static struct workqueue_struct *hpsa_create_controller_wq(struct ctlr_info *h,
8490 struct workqueue_struct *wq = NULL;
8492 wq = alloc_ordered_workqueue("%s_%d_hpsa", 0, name, h->ctlr);
8494 dev_err(&h->pdev->dev, "failed to create %s workqueue\n", name);
8499 static void hpda_free_ctlr_info(struct ctlr_info *h)
8501 kfree(h->reply_map);
8505 static struct ctlr_info *hpda_alloc_ctlr_info(void)
8507 struct ctlr_info *h;
8509 h = kzalloc(sizeof(*h), GFP_KERNEL);
8513 h->reply_map = kcalloc(nr_cpu_ids, sizeof(*h->reply_map), GFP_KERNEL);
8514 if (!h->reply_map) {
8521 static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
8524 struct ctlr_info *h;
8525 int try_soft_reset = 0;
8526 unsigned long flags;
8529 if (number_of_controllers == 0)
8530 printk(KERN_INFO DRIVER_NAME "\n");
8532 rc = hpsa_lookup_board_id(pdev, &board_id, NULL);
8534 dev_warn(&pdev->dev, "Board ID not found\n");
8538 rc = hpsa_init_reset_devices(pdev, board_id);
8540 if (rc != -ENOTSUPP)
8542 /* If the reset fails in a particular way (it has no way to do
8543 * a proper hard reset, so returns -ENOTSUPP) we can try to do
8544 * a soft reset once we get the controller configured up to the
8545 * point that it can accept a command.
8551 reinit_after_soft_reset:
8553 /* Command structures must be aligned on a 32-byte boundary because
8554 * the 5 lower bits of the address are used by the hardware. and by
8555 * the driver. See comments in hpsa.h for more info.
8557 BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT);
8558 h = hpda_alloc_ctlr_info();
8560 dev_err(&pdev->dev, "Failed to allocate controller head\n");
8566 h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT;
8567 INIT_LIST_HEAD(&h->offline_device_list);
8568 spin_lock_init(&h->lock);
8569 spin_lock_init(&h->offline_device_lock);
8570 spin_lock_init(&h->scan_lock);
8571 spin_lock_init(&h->reset_lock);
8572 atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS);
8574 /* Allocate and clear per-cpu variable lockup_detected */
8575 h->lockup_detected = alloc_percpu(u32);
8576 if (!h->lockup_detected) {
8577 dev_err(&h->pdev->dev, "Failed to allocate lockup detector\n");
8579 goto clean1; /* aer/h */
8581 set_lockup_detected_for_all_cpus(h, 0);
8583 rc = hpsa_pci_init(h);
8585 goto clean2; /* lu, aer/h */
8587 /* relies on h-> settings made by hpsa_pci_init, including
8588 * interrupt_mode h->intr */
8589 rc = hpsa_scsi_host_alloc(h);
8591 goto clean2_5; /* pci, lu, aer/h */
8593 sprintf(h->devname, HPSA "%d", h->scsi_host->host_no);
8594 h->ctlr = number_of_controllers;
8595 number_of_controllers++;
8597 /* configure PCI DMA stuff */
8598 rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
8602 rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
8606 dev_err(&pdev->dev, "no suitable DMA available\n");
8607 goto clean3; /* shost, pci, lu, aer/h */
8611 /* make sure the board interrupts are off */
8612 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8614 rc = hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx);
8616 goto clean3; /* shost, pci, lu, aer/h */
8617 rc = hpsa_alloc_cmd_pool(h);
8619 goto clean4; /* irq, shost, pci, lu, aer/h */
8620 rc = hpsa_alloc_sg_chain_blocks(h);
8622 goto clean5; /* cmd, irq, shost, pci, lu, aer/h */
8623 init_waitqueue_head(&h->scan_wait_queue);
8624 init_waitqueue_head(&h->event_sync_wait_queue);
8625 mutex_init(&h->reset_mutex);
8626 h->scan_finished = 1; /* no scan currently in progress */
8627 h->scan_waiting = 0;
8629 pci_set_drvdata(pdev, h);
8632 spin_lock_init(&h->devlock);
8633 rc = hpsa_put_ctlr_into_performant_mode(h);
8635 goto clean6; /* sg, cmd, irq, shost, pci, lu, aer/h */
8637 /* create the resubmit workqueue */
8638 h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan");
8639 if (!h->rescan_ctlr_wq) {
8644 h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit");
8645 if (!h->resubmit_wq) {
8647 goto clean7; /* aer/h */
8651 * At this point, the controller is ready to take commands.
8652 * Now, if reset_devices and the hard reset didn't work, try
8653 * the soft reset and see if that works.
8655 if (try_soft_reset) {
8657 /* This is kind of gross. We may or may not get a completion
8658 * from the soft reset command, and if we do, then the value
8659 * from the fifo may or may not be valid. So, we wait 10 secs
8660 * after the reset throwing away any completions we get during
8661 * that time. Unregister the interrupt handler and register
8662 * fake ones to scoop up any residual completions.
8664 spin_lock_irqsave(&h->lock, flags);
8665 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8666 spin_unlock_irqrestore(&h->lock, flags);
8668 rc = hpsa_request_irqs(h, hpsa_msix_discard_completions,
8669 hpsa_intx_discard_completions);
8671 dev_warn(&h->pdev->dev,
8672 "Failed to request_irq after soft reset.\n");
8674 * cannot goto clean7 or free_irqs will be called
8675 * again. Instead, do its work
8677 hpsa_free_performant_mode(h); /* clean7 */
8678 hpsa_free_sg_chain_blocks(h); /* clean6 */
8679 hpsa_free_cmd_pool(h); /* clean5 */
8681 * skip hpsa_free_irqs(h) clean4 since that
8682 * was just called before request_irqs failed
8687 rc = hpsa_kdump_soft_reset(h);
8689 /* Neither hard nor soft reset worked, we're hosed. */
8692 dev_info(&h->pdev->dev, "Board READY.\n");
8693 dev_info(&h->pdev->dev,
8694 "Waiting for stale completions to drain.\n");
8695 h->access.set_intr_mask(h, HPSA_INTR_ON);
8697 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8699 rc = controller_reset_failed(h->cfgtable);
8701 dev_info(&h->pdev->dev,
8702 "Soft reset appears to have failed.\n");
8704 /* since the controller's reset, we have to go back and re-init
8705 * everything. Easiest to just forget what we've done and do it
8708 hpsa_undo_allocations_after_kdump_soft_reset(h);
8711 /* don't goto clean, we already unallocated */
8714 goto reinit_after_soft_reset;
8717 /* Enable Accelerated IO path at driver layer */
8718 h->acciopath_status = 1;
8719 /* Disable discovery polling.*/
8720 h->discovery_polling = 0;
8723 /* Turn the interrupts on so we can service requests */
8724 h->access.set_intr_mask(h, HPSA_INTR_ON);
8726 hpsa_hba_inquiry(h);
8728 h->lastlogicals = kzalloc(sizeof(*(h->lastlogicals)), GFP_KERNEL);
8729 if (!h->lastlogicals)
8730 dev_info(&h->pdev->dev,
8731 "Can't track change to report lun data\n");
8733 /* hook into SCSI subsystem */
8734 rc = hpsa_scsi_add_host(h);
8736 goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
8738 /* Monitor the controller for firmware lockups */
8739 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
8740 INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker);
8741 schedule_delayed_work(&h->monitor_ctlr_work,
8742 h->heartbeat_sample_interval);
8743 INIT_DELAYED_WORK(&h->rescan_ctlr_work, hpsa_rescan_ctlr_worker);
8744 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
8745 h->heartbeat_sample_interval);
8746 INIT_DELAYED_WORK(&h->event_monitor_work, hpsa_event_monitor_worker);
8747 schedule_delayed_work(&h->event_monitor_work,
8748 HPSA_EVENT_MONITOR_INTERVAL);
8751 clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
8752 hpsa_free_performant_mode(h);
8753 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8754 clean6: /* sg, cmd, irq, pci, lockup, wq/aer/h */
8755 hpsa_free_sg_chain_blocks(h);
8756 clean5: /* cmd, irq, shost, pci, lu, aer/h */
8757 hpsa_free_cmd_pool(h);
8758 clean4: /* irq, shost, pci, lu, aer/h */
8760 clean3: /* shost, pci, lu, aer/h */
8761 scsi_host_put(h->scsi_host);
8762 h->scsi_host = NULL;
8763 clean2_5: /* pci, lu, aer/h */
8764 hpsa_free_pci_init(h);
8765 clean2: /* lu, aer/h */
8766 if (h->lockup_detected) {
8767 free_percpu(h->lockup_detected);
8768 h->lockup_detected = NULL;
8770 clean1: /* wq/aer/h */
8771 if (h->resubmit_wq) {
8772 destroy_workqueue(h->resubmit_wq);
8773 h->resubmit_wq = NULL;
8775 if (h->rescan_ctlr_wq) {
8776 destroy_workqueue(h->rescan_ctlr_wq);
8777 h->rescan_ctlr_wq = NULL;
8783 static void hpsa_flush_cache(struct ctlr_info *h)
8786 struct CommandList *c;
8789 if (unlikely(lockup_detected(h)))
8791 flush_buf = kzalloc(4, GFP_KERNEL);
8797 if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0,
8798 RAID_CTLR_LUNID, TYPE_CMD)) {
8801 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_TO_DEVICE,
8805 if (c->err_info->CommandStatus != 0)
8807 dev_warn(&h->pdev->dev,
8808 "error flushing cache on controller\n");
8813 /* Make controller gather fresh report lun data each time we
8814 * send down a report luns request
8816 static void hpsa_disable_rld_caching(struct ctlr_info *h)
8819 struct CommandList *c;
8822 /* Don't bother trying to set diag options if locked up */
8823 if (unlikely(h->lockup_detected))
8826 options = kzalloc(sizeof(*options), GFP_KERNEL);
8832 /* first, get the current diag options settings */
8833 if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0,
8834 RAID_CTLR_LUNID, TYPE_CMD))
8837 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
8839 if ((rc != 0) || (c->err_info->CommandStatus != 0))
8842 /* Now, set the bit for disabling the RLD caching */
8843 *options |= HPSA_DIAG_OPTS_DISABLE_RLD_CACHING;
8845 if (fill_cmd(c, BMIC_SET_DIAG_OPTIONS, h, options, 4, 0,
8846 RAID_CTLR_LUNID, TYPE_CMD))
8849 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_TO_DEVICE,
8851 if ((rc != 0) || (c->err_info->CommandStatus != 0))
8854 /* Now verify that it got set: */
8855 if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0,
8856 RAID_CTLR_LUNID, TYPE_CMD))
8859 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, DMA_FROM_DEVICE,
8861 if ((rc != 0) || (c->err_info->CommandStatus != 0))
8864 if (*options & HPSA_DIAG_OPTS_DISABLE_RLD_CACHING)
8868 dev_err(&h->pdev->dev,
8869 "Error: failed to disable report lun data caching.\n");
8875 static void __hpsa_shutdown(struct pci_dev *pdev)
8877 struct ctlr_info *h;
8879 h = pci_get_drvdata(pdev);
8880 /* Turn board interrupts off and send the flush cache command
8881 * sendcmd will turn off interrupt, and send the flush...
8882 * To write all data in the battery backed cache to disks
8884 hpsa_flush_cache(h);
8885 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8886 hpsa_free_irqs(h); /* init_one 4 */
8887 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
8890 static void hpsa_shutdown(struct pci_dev *pdev)
8892 __hpsa_shutdown(pdev);
8893 pci_disable_device(pdev);
8896 static void hpsa_free_device_info(struct ctlr_info *h)
8900 for (i = 0; i < h->ndevices; i++) {
8906 static void hpsa_remove_one(struct pci_dev *pdev)
8908 struct ctlr_info *h;
8909 unsigned long flags;
8911 if (pci_get_drvdata(pdev) == NULL) {
8912 dev_err(&pdev->dev, "unable to remove device\n");
8915 h = pci_get_drvdata(pdev);
8917 /* Get rid of any controller monitoring work items */
8918 spin_lock_irqsave(&h->lock, flags);
8919 h->remove_in_progress = 1;
8920 spin_unlock_irqrestore(&h->lock, flags);
8921 cancel_delayed_work_sync(&h->monitor_ctlr_work);
8922 cancel_delayed_work_sync(&h->rescan_ctlr_work);
8923 cancel_delayed_work_sync(&h->event_monitor_work);
8924 destroy_workqueue(h->rescan_ctlr_wq);
8925 destroy_workqueue(h->resubmit_wq);
8927 hpsa_delete_sas_host(h);
8930 * Call before disabling interrupts.
8931 * scsi_remove_host can trigger I/O operations especially
8932 * when multipath is enabled. There can be SYNCHRONIZE CACHE
8933 * operations which cannot complete and will hang the system.
8936 scsi_remove_host(h->scsi_host); /* init_one 8 */
8937 /* includes hpsa_free_irqs - init_one 4 */
8938 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
8939 __hpsa_shutdown(pdev);
8941 hpsa_free_device_info(h); /* scan */
8943 kfree(h->hba_inquiry_data); /* init_one 10 */
8944 h->hba_inquiry_data = NULL; /* init_one 10 */
8945 hpsa_free_ioaccel2_sg_chain_blocks(h);
8946 hpsa_free_performant_mode(h); /* init_one 7 */
8947 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
8948 hpsa_free_cmd_pool(h); /* init_one 5 */
8949 kfree(h->lastlogicals);
8951 /* hpsa_free_irqs already called via hpsa_shutdown init_one 4 */
8953 scsi_host_put(h->scsi_host); /* init_one 3 */
8954 h->scsi_host = NULL; /* init_one 3 */
8956 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
8957 hpsa_free_pci_init(h); /* init_one 2.5 */
8959 free_percpu(h->lockup_detected); /* init_one 2 */
8960 h->lockup_detected = NULL; /* init_one 2 */
8961 /* (void) pci_disable_pcie_error_reporting(pdev); */ /* init_one 1 */
8963 hpda_free_ctlr_info(h); /* init_one 1 */
8966 static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
8967 __attribute__((unused)) pm_message_t state)
8972 static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
8977 static struct pci_driver hpsa_pci_driver = {
8979 .probe = hpsa_init_one,
8980 .remove = hpsa_remove_one,
8981 .id_table = hpsa_pci_device_id, /* id_table */
8982 .shutdown = hpsa_shutdown,
8983 .suspend = hpsa_suspend,
8984 .resume = hpsa_resume,
8987 /* Fill in bucket_map[], given nsgs (the max number of
8988 * scatter gather elements supported) and bucket[],
8989 * which is an array of 8 integers. The bucket[] array
8990 * contains 8 different DMA transfer sizes (in 16
8991 * byte increments) which the controller uses to fetch
8992 * commands. This function fills in bucket_map[], which
8993 * maps a given number of scatter gather elements to one of
8994 * the 8 DMA transfer sizes. The point of it is to allow the
8995 * controller to only do as much DMA as needed to fetch the
8996 * command, with the DMA transfer size encoded in the lower
8997 * bits of the command address.
8999 static void calc_bucket_map(int bucket[], int num_buckets,
9000 int nsgs, int min_blocks, u32 *bucket_map)
9004 /* Note, bucket_map must have nsgs+1 entries. */
9005 for (i = 0; i <= nsgs; i++) {
9006 /* Compute size of a command with i SG entries */
9007 size = i + min_blocks;
9008 b = num_buckets; /* Assume the biggest bucket */
9009 /* Find the bucket that is just big enough */
9010 for (j = 0; j < num_buckets; j++) {
9011 if (bucket[j] >= size) {
9016 /* for a command with i SG entries, use bucket b. */
9022 * return -ENODEV on err, 0 on success (or no action)
9023 * allocates numerous items that must be freed later
9025 static int hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support)
9028 unsigned long register_value;
9029 unsigned long transMethod = CFGTBL_Trans_Performant |
9030 (trans_support & CFGTBL_Trans_use_short_tags) |
9031 CFGTBL_Trans_enable_directed_msix |
9032 (trans_support & (CFGTBL_Trans_io_accel1 |
9033 CFGTBL_Trans_io_accel2));
9034 struct access_method access = SA5_performant_access;
9036 /* This is a bit complicated. There are 8 registers on
9037 * the controller which we write to to tell it 8 different
9038 * sizes of commands which there may be. It's a way of
9039 * reducing the DMA done to fetch each command. Encoded into
9040 * each command's tag are 3 bits which communicate to the controller
9041 * which of the eight sizes that command fits within. The size of
9042 * each command depends on how many scatter gather entries there are.
9043 * Each SG entry requires 16 bytes. The eight registers are programmed
9044 * with the number of 16-byte blocks a command of that size requires.
9045 * The smallest command possible requires 5 such 16 byte blocks.
9046 * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte
9047 * blocks. Note, this only extends to the SG entries contained
9048 * within the command block, and does not extend to chained blocks
9049 * of SG elements. bft[] contains the eight values we write to
9050 * the registers. They are not evenly distributed, but have more
9051 * sizes for small commands, and fewer sizes for larger commands.
9053 int bft[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD + 4};
9054 #define MIN_IOACCEL2_BFT_ENTRY 5
9055 #define HPSA_IOACCEL2_HEADER_SZ 4
9056 int bft2[16] = {MIN_IOACCEL2_BFT_ENTRY, 6, 7, 8, 9, 10, 11, 12,
9057 13, 14, 15, 16, 17, 18, 19,
9058 HPSA_IOACCEL2_HEADER_SZ + IOACCEL2_MAXSGENTRIES};
9059 BUILD_BUG_ON(ARRAY_SIZE(bft2) != 16);
9060 BUILD_BUG_ON(ARRAY_SIZE(bft) != 8);
9061 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) >
9062 16 * MIN_IOACCEL2_BFT_ENTRY);
9063 BUILD_BUG_ON(sizeof(struct ioaccel2_sg_element) != 16);
9064 BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD + 4);
9065 /* 5 = 1 s/g entry or 4k
9066 * 6 = 2 s/g entry or 8k
9067 * 8 = 4 s/g entry or 16k
9068 * 10 = 6 s/g entry or 24k
9071 /* If the controller supports either ioaccel method then
9072 * we can also use the RAID stack submit path that does not
9073 * perform the superfluous readl() after each command submission.
9075 if (trans_support & (CFGTBL_Trans_io_accel1 | CFGTBL_Trans_io_accel2))
9076 access = SA5_performant_access_no_read;
9078 /* Controller spec: zero out this buffer. */
9079 for (i = 0; i < h->nreply_queues; i++)
9080 memset(h->reply_queue[i].head, 0, h->reply_queue_size);
9082 bft[7] = SG_ENTRIES_IN_CMD + 4;
9083 calc_bucket_map(bft, ARRAY_SIZE(bft),
9084 SG_ENTRIES_IN_CMD, 4, h->blockFetchTable);
9085 for (i = 0; i < 8; i++)
9086 writel(bft[i], &h->transtable->BlockFetch[i]);
9088 /* size of controller ring buffer */
9089 writel(h->max_commands, &h->transtable->RepQSize);
9090 writel(h->nreply_queues, &h->transtable->RepQCount);
9091 writel(0, &h->transtable->RepQCtrAddrLow32);
9092 writel(0, &h->transtable->RepQCtrAddrHigh32);
9094 for (i = 0; i < h->nreply_queues; i++) {
9095 writel(0, &h->transtable->RepQAddr[i].upper);
9096 writel(h->reply_queue[i].busaddr,
9097 &h->transtable->RepQAddr[i].lower);
9100 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
9101 writel(transMethod, &(h->cfgtable->HostWrite.TransportRequest));
9103 * enable outbound interrupt coalescing in accelerator mode;
9105 if (trans_support & CFGTBL_Trans_io_accel1) {
9106 access = SA5_ioaccel_mode1_access;
9107 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
9108 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
9110 if (trans_support & CFGTBL_Trans_io_accel2)
9111 access = SA5_ioaccel_mode2_access;
9112 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
9113 if (hpsa_wait_for_mode_change_ack(h)) {
9114 dev_err(&h->pdev->dev,
9115 "performant mode problem - doorbell timeout\n");
9118 register_value = readl(&(h->cfgtable->TransportActive));
9119 if (!(register_value & CFGTBL_Trans_Performant)) {
9120 dev_err(&h->pdev->dev,
9121 "performant mode problem - transport not active\n");
9124 /* Change the access methods to the performant access methods */
9126 h->transMethod = transMethod;
9128 if (!((trans_support & CFGTBL_Trans_io_accel1) ||
9129 (trans_support & CFGTBL_Trans_io_accel2)))
9132 if (trans_support & CFGTBL_Trans_io_accel1) {
9133 /* Set up I/O accelerator mode */
9134 for (i = 0; i < h->nreply_queues; i++) {
9135 writel(i, h->vaddr + IOACCEL_MODE1_REPLY_QUEUE_INDEX);
9136 h->reply_queue[i].current_entry =
9137 readl(h->vaddr + IOACCEL_MODE1_PRODUCER_INDEX);
9139 bft[7] = h->ioaccel_maxsg + 8;
9140 calc_bucket_map(bft, ARRAY_SIZE(bft), h->ioaccel_maxsg, 8,
9141 h->ioaccel1_blockFetchTable);
9143 /* initialize all reply queue entries to unused */
9144 for (i = 0; i < h->nreply_queues; i++)
9145 memset(h->reply_queue[i].head,
9146 (u8) IOACCEL_MODE1_REPLY_UNUSED,
9147 h->reply_queue_size);
9149 /* set all the constant fields in the accelerator command
9150 * frames once at init time to save CPU cycles later.
9152 for (i = 0; i < h->nr_cmds; i++) {
9153 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[i];
9155 cp->function = IOACCEL1_FUNCTION_SCSIIO;
9156 cp->err_info = (u32) (h->errinfo_pool_dhandle +
9157 (i * sizeof(struct ErrorInfo)));
9158 cp->err_info_len = sizeof(struct ErrorInfo);
9159 cp->sgl_offset = IOACCEL1_SGLOFFSET;
9160 cp->host_context_flags =
9161 cpu_to_le16(IOACCEL1_HCFLAGS_CISS_FORMAT);
9162 cp->timeout_sec = 0;
9165 cpu_to_le64((i << DIRECT_LOOKUP_SHIFT));
9167 cpu_to_le64(h->ioaccel_cmd_pool_dhandle +
9168 (i * sizeof(struct io_accel1_cmd)));
9170 } else if (trans_support & CFGTBL_Trans_io_accel2) {
9171 u64 cfg_offset, cfg_base_addr_index;
9172 u32 bft2_offset, cfg_base_addr;
9175 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
9176 &cfg_base_addr_index, &cfg_offset);
9177 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) != 64);
9178 bft2[15] = h->ioaccel_maxsg + HPSA_IOACCEL2_HEADER_SZ;
9179 calc_bucket_map(bft2, ARRAY_SIZE(bft2), h->ioaccel_maxsg,
9180 4, h->ioaccel2_blockFetchTable);
9181 bft2_offset = readl(&h->cfgtable->io_accel_request_size_offset);
9182 BUILD_BUG_ON(offsetof(struct CfgTable,
9183 io_accel_request_size_offset) != 0xb8);
9184 h->ioaccel2_bft2_regs =
9185 remap_pci_mem(pci_resource_start(h->pdev,
9186 cfg_base_addr_index) +
9187 cfg_offset + bft2_offset,
9189 sizeof(*h->ioaccel2_bft2_regs));
9190 for (i = 0; i < ARRAY_SIZE(bft2); i++)
9191 writel(bft2[i], &h->ioaccel2_bft2_regs[i]);
9193 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
9194 if (hpsa_wait_for_mode_change_ack(h)) {
9195 dev_err(&h->pdev->dev,
9196 "performant mode problem - enabling ioaccel mode\n");
9202 /* Free ioaccel1 mode command blocks and block fetch table */
9203 static void hpsa_free_ioaccel1_cmd_and_bft(struct ctlr_info *h)
9205 if (h->ioaccel_cmd_pool) {
9206 pci_free_consistent(h->pdev,
9207 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
9208 h->ioaccel_cmd_pool,
9209 h->ioaccel_cmd_pool_dhandle);
9210 h->ioaccel_cmd_pool = NULL;
9211 h->ioaccel_cmd_pool_dhandle = 0;
9213 kfree(h->ioaccel1_blockFetchTable);
9214 h->ioaccel1_blockFetchTable = NULL;
9217 /* Allocate ioaccel1 mode command blocks and block fetch table */
9218 static int hpsa_alloc_ioaccel1_cmd_and_bft(struct ctlr_info *h)
9221 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
9222 if (h->ioaccel_maxsg > IOACCEL1_MAXSGENTRIES)
9223 h->ioaccel_maxsg = IOACCEL1_MAXSGENTRIES;
9225 /* Command structures must be aligned on a 128-byte boundary
9226 * because the 7 lower bits of the address are used by the
9229 BUILD_BUG_ON(sizeof(struct io_accel1_cmd) %
9230 IOACCEL1_COMMANDLIST_ALIGNMENT);
9231 h->ioaccel_cmd_pool =
9232 dma_alloc_coherent(&h->pdev->dev,
9233 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
9234 &h->ioaccel_cmd_pool_dhandle, GFP_KERNEL);
9236 h->ioaccel1_blockFetchTable =
9237 kmalloc(((h->ioaccel_maxsg + 1) *
9238 sizeof(u32)), GFP_KERNEL);
9240 if ((h->ioaccel_cmd_pool == NULL) ||
9241 (h->ioaccel1_blockFetchTable == NULL))
9244 memset(h->ioaccel_cmd_pool, 0,
9245 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool));
9249 hpsa_free_ioaccel1_cmd_and_bft(h);
9253 /* Free ioaccel2 mode command blocks and block fetch table */
9254 static void hpsa_free_ioaccel2_cmd_and_bft(struct ctlr_info *h)
9256 hpsa_free_ioaccel2_sg_chain_blocks(h);
9258 if (h->ioaccel2_cmd_pool) {
9259 pci_free_consistent(h->pdev,
9260 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
9261 h->ioaccel2_cmd_pool,
9262 h->ioaccel2_cmd_pool_dhandle);
9263 h->ioaccel2_cmd_pool = NULL;
9264 h->ioaccel2_cmd_pool_dhandle = 0;
9266 kfree(h->ioaccel2_blockFetchTable);
9267 h->ioaccel2_blockFetchTable = NULL;
9270 /* Allocate ioaccel2 mode command blocks and block fetch table */
9271 static int hpsa_alloc_ioaccel2_cmd_and_bft(struct ctlr_info *h)
9275 /* Allocate ioaccel2 mode command blocks and block fetch table */
9278 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
9279 if (h->ioaccel_maxsg > IOACCEL2_MAXSGENTRIES)
9280 h->ioaccel_maxsg = IOACCEL2_MAXSGENTRIES;
9282 BUILD_BUG_ON(sizeof(struct io_accel2_cmd) %
9283 IOACCEL2_COMMANDLIST_ALIGNMENT);
9284 h->ioaccel2_cmd_pool =
9285 dma_alloc_coherent(&h->pdev->dev,
9286 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
9287 &h->ioaccel2_cmd_pool_dhandle, GFP_KERNEL);
9289 h->ioaccel2_blockFetchTable =
9290 kmalloc(((h->ioaccel_maxsg + 1) *
9291 sizeof(u32)), GFP_KERNEL);
9293 if ((h->ioaccel2_cmd_pool == NULL) ||
9294 (h->ioaccel2_blockFetchTable == NULL)) {
9299 rc = hpsa_allocate_ioaccel2_sg_chain_blocks(h);
9303 memset(h->ioaccel2_cmd_pool, 0,
9304 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool));
9308 hpsa_free_ioaccel2_cmd_and_bft(h);
9312 /* Free items allocated by hpsa_put_ctlr_into_performant_mode */
9313 static void hpsa_free_performant_mode(struct ctlr_info *h)
9315 kfree(h->blockFetchTable);
9316 h->blockFetchTable = NULL;
9317 hpsa_free_reply_queues(h);
9318 hpsa_free_ioaccel1_cmd_and_bft(h);
9319 hpsa_free_ioaccel2_cmd_and_bft(h);
9322 /* return -ENODEV on error, 0 on success (or no action)
9323 * allocates numerous items that must be freed later
9325 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
9328 unsigned long transMethod = CFGTBL_Trans_Performant |
9329 CFGTBL_Trans_use_short_tags;
9332 if (hpsa_simple_mode)
9335 trans_support = readl(&(h->cfgtable->TransportSupport));
9336 if (!(trans_support & PERFORMANT_MODE))
9339 /* Check for I/O accelerator mode support */
9340 if (trans_support & CFGTBL_Trans_io_accel1) {
9341 transMethod |= CFGTBL_Trans_io_accel1 |
9342 CFGTBL_Trans_enable_directed_msix;
9343 rc = hpsa_alloc_ioaccel1_cmd_and_bft(h);
9346 } else if (trans_support & CFGTBL_Trans_io_accel2) {
9347 transMethod |= CFGTBL_Trans_io_accel2 |
9348 CFGTBL_Trans_enable_directed_msix;
9349 rc = hpsa_alloc_ioaccel2_cmd_and_bft(h);
9354 h->nreply_queues = h->msix_vectors > 0 ? h->msix_vectors : 1;
9355 hpsa_get_max_perf_mode_cmds(h);
9356 /* Performant mode ring buffer and supporting data structures */
9357 h->reply_queue_size = h->max_commands * sizeof(u64);
9359 for (i = 0; i < h->nreply_queues; i++) {
9360 h->reply_queue[i].head = dma_alloc_coherent(&h->pdev->dev,
9361 h->reply_queue_size,
9362 &h->reply_queue[i].busaddr,
9364 if (!h->reply_queue[i].head) {
9366 goto clean1; /* rq, ioaccel */
9368 h->reply_queue[i].size = h->max_commands;
9369 h->reply_queue[i].wraparound = 1; /* spec: init to 1 */
9370 h->reply_queue[i].current_entry = 0;
9373 /* Need a block fetch table for performant mode */
9374 h->blockFetchTable = kmalloc(((SG_ENTRIES_IN_CMD + 1) *
9375 sizeof(u32)), GFP_KERNEL);
9376 if (!h->blockFetchTable) {
9378 goto clean1; /* rq, ioaccel */
9381 rc = hpsa_enter_performant_mode(h, trans_support);
9383 goto clean2; /* bft, rq, ioaccel */
9386 clean2: /* bft, rq, ioaccel */
9387 kfree(h->blockFetchTable);
9388 h->blockFetchTable = NULL;
9389 clean1: /* rq, ioaccel */
9390 hpsa_free_reply_queues(h);
9391 hpsa_free_ioaccel1_cmd_and_bft(h);
9392 hpsa_free_ioaccel2_cmd_and_bft(h);
9396 static int is_accelerated_cmd(struct CommandList *c)
9398 return c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_IOACCEL2;
9401 static void hpsa_drain_accel_commands(struct ctlr_info *h)
9403 struct CommandList *c = NULL;
9404 int i, accel_cmds_out;
9407 do { /* wait for all outstanding ioaccel commands to drain out */
9409 for (i = 0; i < h->nr_cmds; i++) {
9410 c = h->cmd_pool + i;
9411 refcount = atomic_inc_return(&c->refcount);
9412 if (refcount > 1) /* Command is allocated */
9413 accel_cmds_out += is_accelerated_cmd(c);
9416 if (accel_cmds_out <= 0)
9422 static struct hpsa_sas_phy *hpsa_alloc_sas_phy(
9423 struct hpsa_sas_port *hpsa_sas_port)
9425 struct hpsa_sas_phy *hpsa_sas_phy;
9426 struct sas_phy *phy;
9428 hpsa_sas_phy = kzalloc(sizeof(*hpsa_sas_phy), GFP_KERNEL);
9432 phy = sas_phy_alloc(hpsa_sas_port->parent_node->parent_dev,
9433 hpsa_sas_port->next_phy_index);
9435 kfree(hpsa_sas_phy);
9439 hpsa_sas_port->next_phy_index++;
9440 hpsa_sas_phy->phy = phy;
9441 hpsa_sas_phy->parent_port = hpsa_sas_port;
9443 return hpsa_sas_phy;
9446 static void hpsa_free_sas_phy(struct hpsa_sas_phy *hpsa_sas_phy)
9448 struct sas_phy *phy = hpsa_sas_phy->phy;
9450 sas_port_delete_phy(hpsa_sas_phy->parent_port->port, phy);
9451 if (hpsa_sas_phy->added_to_port)
9452 list_del(&hpsa_sas_phy->phy_list_entry);
9453 sas_phy_delete(phy);
9454 kfree(hpsa_sas_phy);
9457 static int hpsa_sas_port_add_phy(struct hpsa_sas_phy *hpsa_sas_phy)
9460 struct hpsa_sas_port *hpsa_sas_port;
9461 struct sas_phy *phy;
9462 struct sas_identify *identify;
9464 hpsa_sas_port = hpsa_sas_phy->parent_port;
9465 phy = hpsa_sas_phy->phy;
9467 identify = &phy->identify;
9468 memset(identify, 0, sizeof(*identify));
9469 identify->sas_address = hpsa_sas_port->sas_address;
9470 identify->device_type = SAS_END_DEVICE;
9471 identify->initiator_port_protocols = SAS_PROTOCOL_STP;
9472 identify->target_port_protocols = SAS_PROTOCOL_STP;
9473 phy->minimum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
9474 phy->maximum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
9475 phy->minimum_linkrate = SAS_LINK_RATE_UNKNOWN;
9476 phy->maximum_linkrate = SAS_LINK_RATE_UNKNOWN;
9477 phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
9479 rc = sas_phy_add(hpsa_sas_phy->phy);
9483 sas_port_add_phy(hpsa_sas_port->port, hpsa_sas_phy->phy);
9484 list_add_tail(&hpsa_sas_phy->phy_list_entry,
9485 &hpsa_sas_port->phy_list_head);
9486 hpsa_sas_phy->added_to_port = true;
9492 hpsa_sas_port_add_rphy(struct hpsa_sas_port *hpsa_sas_port,
9493 struct sas_rphy *rphy)
9495 struct sas_identify *identify;
9497 identify = &rphy->identify;
9498 identify->sas_address = hpsa_sas_port->sas_address;
9499 identify->initiator_port_protocols = SAS_PROTOCOL_STP;
9500 identify->target_port_protocols = SAS_PROTOCOL_STP;
9502 return sas_rphy_add(rphy);
9505 static struct hpsa_sas_port
9506 *hpsa_alloc_sas_port(struct hpsa_sas_node *hpsa_sas_node,
9510 struct hpsa_sas_port *hpsa_sas_port;
9511 struct sas_port *port;
9513 hpsa_sas_port = kzalloc(sizeof(*hpsa_sas_port), GFP_KERNEL);
9517 INIT_LIST_HEAD(&hpsa_sas_port->phy_list_head);
9518 hpsa_sas_port->parent_node = hpsa_sas_node;
9520 port = sas_port_alloc_num(hpsa_sas_node->parent_dev);
9522 goto free_hpsa_port;
9524 rc = sas_port_add(port);
9528 hpsa_sas_port->port = port;
9529 hpsa_sas_port->sas_address = sas_address;
9530 list_add_tail(&hpsa_sas_port->port_list_entry,
9531 &hpsa_sas_node->port_list_head);
9533 return hpsa_sas_port;
9536 sas_port_free(port);
9538 kfree(hpsa_sas_port);
9543 static void hpsa_free_sas_port(struct hpsa_sas_port *hpsa_sas_port)
9545 struct hpsa_sas_phy *hpsa_sas_phy;
9546 struct hpsa_sas_phy *next;
9548 list_for_each_entry_safe(hpsa_sas_phy, next,
9549 &hpsa_sas_port->phy_list_head, phy_list_entry)
9550 hpsa_free_sas_phy(hpsa_sas_phy);
9552 sas_port_delete(hpsa_sas_port->port);
9553 list_del(&hpsa_sas_port->port_list_entry);
9554 kfree(hpsa_sas_port);
9557 static struct hpsa_sas_node *hpsa_alloc_sas_node(struct device *parent_dev)
9559 struct hpsa_sas_node *hpsa_sas_node;
9561 hpsa_sas_node = kzalloc(sizeof(*hpsa_sas_node), GFP_KERNEL);
9562 if (hpsa_sas_node) {
9563 hpsa_sas_node->parent_dev = parent_dev;
9564 INIT_LIST_HEAD(&hpsa_sas_node->port_list_head);
9567 return hpsa_sas_node;
9570 static void hpsa_free_sas_node(struct hpsa_sas_node *hpsa_sas_node)
9572 struct hpsa_sas_port *hpsa_sas_port;
9573 struct hpsa_sas_port *next;
9578 list_for_each_entry_safe(hpsa_sas_port, next,
9579 &hpsa_sas_node->port_list_head, port_list_entry)
9580 hpsa_free_sas_port(hpsa_sas_port);
9582 kfree(hpsa_sas_node);
9585 static struct hpsa_scsi_dev_t
9586 *hpsa_find_device_by_sas_rphy(struct ctlr_info *h,
9587 struct sas_rphy *rphy)
9590 struct hpsa_scsi_dev_t *device;
9592 for (i = 0; i < h->ndevices; i++) {
9594 if (!device->sas_port)
9596 if (device->sas_port->rphy == rphy)
9603 static int hpsa_add_sas_host(struct ctlr_info *h)
9606 struct device *parent_dev;
9607 struct hpsa_sas_node *hpsa_sas_node;
9608 struct hpsa_sas_port *hpsa_sas_port;
9609 struct hpsa_sas_phy *hpsa_sas_phy;
9611 parent_dev = &h->scsi_host->shost_dev;
9613 hpsa_sas_node = hpsa_alloc_sas_node(parent_dev);
9617 hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, h->sas_address);
9618 if (!hpsa_sas_port) {
9623 hpsa_sas_phy = hpsa_alloc_sas_phy(hpsa_sas_port);
9624 if (!hpsa_sas_phy) {
9629 rc = hpsa_sas_port_add_phy(hpsa_sas_phy);
9633 h->sas_host = hpsa_sas_node;
9638 hpsa_free_sas_phy(hpsa_sas_phy);
9640 hpsa_free_sas_port(hpsa_sas_port);
9642 hpsa_free_sas_node(hpsa_sas_node);
9647 static void hpsa_delete_sas_host(struct ctlr_info *h)
9649 hpsa_free_sas_node(h->sas_host);
9652 static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node,
9653 struct hpsa_scsi_dev_t *device)
9656 struct hpsa_sas_port *hpsa_sas_port;
9657 struct sas_rphy *rphy;
9659 hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, device->sas_address);
9663 rphy = sas_end_device_alloc(hpsa_sas_port->port);
9669 hpsa_sas_port->rphy = rphy;
9670 device->sas_port = hpsa_sas_port;
9672 rc = hpsa_sas_port_add_rphy(hpsa_sas_port, rphy);
9679 hpsa_free_sas_port(hpsa_sas_port);
9680 device->sas_port = NULL;
9685 static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device)
9687 if (device->sas_port) {
9688 hpsa_free_sas_port(device->sas_port);
9689 device->sas_port = NULL;
9694 hpsa_sas_get_linkerrors(struct sas_phy *phy)
9700 hpsa_sas_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
9702 struct Scsi_Host *shost = phy_to_shost(rphy);
9703 struct ctlr_info *h;
9704 struct hpsa_scsi_dev_t *sd;
9709 h = shost_to_hba(shost);
9714 sd = hpsa_find_device_by_sas_rphy(h, rphy);
9718 *identifier = sd->eli;
9724 hpsa_sas_get_bay_identifier(struct sas_rphy *rphy)
9730 hpsa_sas_phy_reset(struct sas_phy *phy, int hard_reset)
9736 hpsa_sas_phy_enable(struct sas_phy *phy, int enable)
9742 hpsa_sas_phy_setup(struct sas_phy *phy)
9748 hpsa_sas_phy_release(struct sas_phy *phy)
9753 hpsa_sas_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
9758 static struct sas_function_template hpsa_sas_transport_functions = {
9759 .get_linkerrors = hpsa_sas_get_linkerrors,
9760 .get_enclosure_identifier = hpsa_sas_get_enclosure_identifier,
9761 .get_bay_identifier = hpsa_sas_get_bay_identifier,
9762 .phy_reset = hpsa_sas_phy_reset,
9763 .phy_enable = hpsa_sas_phy_enable,
9764 .phy_setup = hpsa_sas_phy_setup,
9765 .phy_release = hpsa_sas_phy_release,
9766 .set_phy_speed = hpsa_sas_phy_speed,
9770 * This is it. Register the PCI driver information for the cards we control
9771 * the OS will call our registered routines when it finds one of our cards.
9773 static int __init hpsa_init(void)
9777 hpsa_sas_transport_template =
9778 sas_attach_transport(&hpsa_sas_transport_functions);
9779 if (!hpsa_sas_transport_template)
9782 rc = pci_register_driver(&hpsa_pci_driver);
9785 sas_release_transport(hpsa_sas_transport_template);
9790 static void __exit hpsa_cleanup(void)
9792 pci_unregister_driver(&hpsa_pci_driver);
9793 sas_release_transport(hpsa_sas_transport_template);
9796 static void __attribute__((unused)) verify_offsets(void)
9798 #define VERIFY_OFFSET(member, offset) \
9799 BUILD_BUG_ON(offsetof(struct raid_map_data, member) != offset)
9801 VERIFY_OFFSET(structure_size, 0);
9802 VERIFY_OFFSET(volume_blk_size, 4);
9803 VERIFY_OFFSET(volume_blk_cnt, 8);
9804 VERIFY_OFFSET(phys_blk_shift, 16);
9805 VERIFY_OFFSET(parity_rotation_shift, 17);
9806 VERIFY_OFFSET(strip_size, 18);
9807 VERIFY_OFFSET(disk_starting_blk, 20);
9808 VERIFY_OFFSET(disk_blk_cnt, 28);
9809 VERIFY_OFFSET(data_disks_per_row, 36);
9810 VERIFY_OFFSET(metadata_disks_per_row, 38);
9811 VERIFY_OFFSET(row_cnt, 40);
9812 VERIFY_OFFSET(layout_map_count, 42);
9813 VERIFY_OFFSET(flags, 44);
9814 VERIFY_OFFSET(dekindex, 46);
9815 /* VERIFY_OFFSET(reserved, 48 */
9816 VERIFY_OFFSET(data, 64);
9818 #undef VERIFY_OFFSET
9820 #define VERIFY_OFFSET(member, offset) \
9821 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, member) != offset)
9823 VERIFY_OFFSET(IU_type, 0);
9824 VERIFY_OFFSET(direction, 1);
9825 VERIFY_OFFSET(reply_queue, 2);
9826 /* VERIFY_OFFSET(reserved1, 3); */
9827 VERIFY_OFFSET(scsi_nexus, 4);
9828 VERIFY_OFFSET(Tag, 8);
9829 VERIFY_OFFSET(cdb, 16);
9830 VERIFY_OFFSET(cciss_lun, 32);
9831 VERIFY_OFFSET(data_len, 40);
9832 VERIFY_OFFSET(cmd_priority_task_attr, 44);
9833 VERIFY_OFFSET(sg_count, 45);
9834 /* VERIFY_OFFSET(reserved3 */
9835 VERIFY_OFFSET(err_ptr, 48);
9836 VERIFY_OFFSET(err_len, 56);
9837 /* VERIFY_OFFSET(reserved4 */
9838 VERIFY_OFFSET(sg, 64);
9840 #undef VERIFY_OFFSET
9842 #define VERIFY_OFFSET(member, offset) \
9843 BUILD_BUG_ON(offsetof(struct io_accel1_cmd, member) != offset)
9845 VERIFY_OFFSET(dev_handle, 0x00);
9846 VERIFY_OFFSET(reserved1, 0x02);
9847 VERIFY_OFFSET(function, 0x03);
9848 VERIFY_OFFSET(reserved2, 0x04);
9849 VERIFY_OFFSET(err_info, 0x0C);
9850 VERIFY_OFFSET(reserved3, 0x10);
9851 VERIFY_OFFSET(err_info_len, 0x12);
9852 VERIFY_OFFSET(reserved4, 0x13);
9853 VERIFY_OFFSET(sgl_offset, 0x14);
9854 VERIFY_OFFSET(reserved5, 0x15);
9855 VERIFY_OFFSET(transfer_len, 0x1C);
9856 VERIFY_OFFSET(reserved6, 0x20);
9857 VERIFY_OFFSET(io_flags, 0x24);
9858 VERIFY_OFFSET(reserved7, 0x26);
9859 VERIFY_OFFSET(LUN, 0x34);
9860 VERIFY_OFFSET(control, 0x3C);
9861 VERIFY_OFFSET(CDB, 0x40);
9862 VERIFY_OFFSET(reserved8, 0x50);
9863 VERIFY_OFFSET(host_context_flags, 0x60);
9864 VERIFY_OFFSET(timeout_sec, 0x62);
9865 VERIFY_OFFSET(ReplyQueue, 0x64);
9866 VERIFY_OFFSET(reserved9, 0x65);
9867 VERIFY_OFFSET(tag, 0x68);
9868 VERIFY_OFFSET(host_addr, 0x70);
9869 VERIFY_OFFSET(CISS_LUN, 0x78);
9870 VERIFY_OFFSET(SG, 0x78 + 8);
9871 #undef VERIFY_OFFSET
9874 module_init(hpsa_init);
9875 module_exit(hpsa_cleanup);