hpsa.c 274.4 KB
Newer Older
1 2
/*
 *    Disk Array driver for HP Smart Array SAS controllers
D
Don Brace 已提交
3
 *    Copyright 2016 Microsemi Corporation
D
Don Brace 已提交
4 5
 *    Copyright 2014-2015 PMC-Sierra, Inc.
 *    Copyright 2000,2009-2015 Hewlett-Packard Development Company, L.P.
6 7 8 9 10 11 12 13 14 15
 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; version 2 of the License.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
 *    NON INFRINGEMENT.  See the GNU General Public License for more details.
 *
D
Don Brace 已提交
16
 *    Questions/Comments/Bugfixes to esc.storagedev@microsemi.com
17 18 19 20 21 22 23
 *
 */

#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/types.h>
#include <linux/pci.h>
M
Matthew Garrett 已提交
24
#include <linux/pci-aspm.h>
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/compat.h>
#include <linux/blktrace_api.h>
#include <linux/uaccess.h>
#include <linux/io.h>
#include <linux/dma-mapping.h>
#include <linux/completion.h>
#include <linux/moduleparam.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
43
#include <scsi/scsi_tcq.h>
44
#include <scsi/scsi_eh.h>
K
Kevin Barnett 已提交
45
#include <scsi/scsi_transport_sas.h>
46
#include <scsi/scsi_dbg.h>
47 48 49
#include <linux/cciss_ioctl.h>
#include <linux/string.h>
#include <linux/bitmap.h>
A
Arun Sharma 已提交
50
#include <linux/atomic.h>
51
#include <linux/jiffies.h>
D
Don Brace 已提交
52
#include <linux/percpu-defs.h>
53
#include <linux/percpu.h>
D
Don Brace 已提交
54
#include <asm/unaligned.h>
55
#include <asm/div64.h>
56 57 58
#include "hpsa_cmd.h"
#include "hpsa.h"

D
Don Brace 已提交
59 60 61 62 63
/*
 * HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.'
 * with an optional trailing '-' followed by a byte value (0-255).
 */
#define HPSA_DRIVER_VERSION "3.4.14-0"
64
#define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
65
#define HPSA "hpsa"
66

67 68 69 70 71
/* How long to wait for CISS doorbell communication */
#define CLEAR_EVENT_WAIT_INTERVAL 20	/* ms for each msleep() call */
#define MODE_CHANGE_WAIT_INTERVAL 10	/* ms for each msleep() call */
#define MAX_CLEAR_EVENT_WAIT 30000	/* times 20 ms = 600 s */
#define MAX_MODE_CHANGE_WAIT 2000	/* times 10 ms = 20 s */
72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88
#define MAX_IOCTL_CONFIG_WAIT 1000

/*define how many times we will try a command because of bus resets */
#define MAX_CMD_RETRIES 3

/* Embedded module documentation macros - see modules.h */
MODULE_AUTHOR("Hewlett-Packard Company");
MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
	HPSA_DRIVER_VERSION);
MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
MODULE_VERSION(HPSA_DRIVER_VERSION);
MODULE_LICENSE("GPL");

static int hpsa_allow_any;
module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(hpsa_allow_any,
		"Allow hpsa driver to access unknown HP Smart Array hardware");
89 90 91 92
static int hpsa_simple_mode;
module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(hpsa_simple_mode,
	"Use 'simple mode' rather than 'performant mode'");
93 94 95 96 97 98 99 100

/* define the PCI info for the cards we can control */
static const struct pci_device_id hpsa_pci_device_id[] = {
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x3241},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x3243},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x3245},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x3247},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x3249},
101 102
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x324A},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x324B},
103
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x3233},
104 105 106 107 108 109 110
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSF,     0x103C, 0x3350},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSF,     0x103C, 0x3351},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSF,     0x103C, 0x3352},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSF,     0x103C, 0x3353},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSF,     0x103C, 0x3354},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSF,     0x103C, 0x3355},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSF,     0x103C, 0x3356},
111 112 113 114 115 116
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1921},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1922},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1923},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1924},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1926},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1928},
117 118 119 120 121 122 123 124 125 126
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSH,     0x103C, 0x1929},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21BD},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21BE},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21BF},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C0},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C1},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C2},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C3},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C4},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C5},
127
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C6},
128 129 130
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C7},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C8},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21C9},
131 132 133 134 135
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21CA},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21CB},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21CC},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21CD},
	{PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSI,     0x103C, 0x21CE},
D
Don Brace 已提交
136
	{PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0580},
D
Don Brace 已提交
137 138 139 140 141
	{PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0581},
	{PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0582},
	{PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0583},
	{PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0584},
	{PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0585},
142 143 144 145 146
	{PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0076},
	{PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0087},
	{PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x007D},
	{PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0088},
	{PCI_VENDOR_ID_HP, 0x333f, 0x103c, 0x333f},
147
	{PCI_VENDOR_ID_HP,     PCI_ANY_ID,	PCI_ANY_ID, PCI_ANY_ID,
148
		PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
149 150 151 152 153 154 155 156 157 158 159 160 161 162 163
	{0,}
};

MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id);

/*  board_id = Subsystem Device ID & Vendor ID
 *  product = Marketing Name for the board
 *  access = Address of the struct of function pointers
 */
static struct board_type products[] = {
	{0x3241103C, "Smart Array P212", &SA5_access},
	{0x3243103C, "Smart Array P410", &SA5_access},
	{0x3245103C, "Smart Array P410i", &SA5_access},
	{0x3247103C, "Smart Array P411", &SA5_access},
	{0x3249103C, "Smart Array P812", &SA5_access},
164 165
	{0x324A103C, "Smart Array P712m", &SA5_access},
	{0x324B103C, "Smart Array P711m", &SA5_access},
166
	{0x3233103C, "HP StorageWorks 1210m", &SA5_access}, /* alias of 333f */
167 168 169 170 171 172 173
	{0x3350103C, "Smart Array P222", &SA5_access},
	{0x3351103C, "Smart Array P420", &SA5_access},
	{0x3352103C, "Smart Array P421", &SA5_access},
	{0x3353103C, "Smart Array P822", &SA5_access},
	{0x3354103C, "Smart Array P420i", &SA5_access},
	{0x3355103C, "Smart Array P220i", &SA5_access},
	{0x3356103C, "Smart Array P721m", &SA5_access},
174 175 176 177 178 179 180
	{0x1921103C, "Smart Array P830i", &SA5_access},
	{0x1922103C, "Smart Array P430", &SA5_access},
	{0x1923103C, "Smart Array P431", &SA5_access},
	{0x1924103C, "Smart Array P830", &SA5_access},
	{0x1926103C, "Smart Array P731m", &SA5_access},
	{0x1928103C, "Smart Array P230i", &SA5_access},
	{0x1929103C, "Smart Array P530", &SA5_access},
181 182 183 184
	{0x21BD103C, "Smart Array P244br", &SA5_access},
	{0x21BE103C, "Smart Array P741m", &SA5_access},
	{0x21BF103C, "Smart HBA H240ar", &SA5_access},
	{0x21C0103C, "Smart Array P440ar", &SA5_access},
185
	{0x21C1103C, "Smart Array P840ar", &SA5_access},
186 187
	{0x21C2103C, "Smart Array P440", &SA5_access},
	{0x21C3103C, "Smart Array P441", &SA5_access},
188
	{0x21C4103C, "Smart Array", &SA5_access},
189 190 191 192
	{0x21C5103C, "Smart Array P841", &SA5_access},
	{0x21C6103C, "Smart HBA H244br", &SA5_access},
	{0x21C7103C, "Smart HBA H240", &SA5_access},
	{0x21C8103C, "Smart HBA H241", &SA5_access},
193
	{0x21C9103C, "Smart Array", &SA5_access},
194 195
	{0x21CA103C, "Smart Array P246br", &SA5_access},
	{0x21CB103C, "Smart Array P840", &SA5_access},
196 197
	{0x21CC103C, "Smart Array", &SA5_access},
	{0x21CD103C, "Smart Array", &SA5_access},
198
	{0x21CE103C, "Smart HBA", &SA5_access},
D
Don Brace 已提交
199
	{0x05809005, "SmartHBA-SA", &SA5_access},
D
Don Brace 已提交
200 201 202 203 204
	{0x05819005, "SmartHBA-SA 8i", &SA5_access},
	{0x05829005, "SmartHBA-SA 8i8e", &SA5_access},
	{0x05839005, "SmartHBA-SA 8e", &SA5_access},
	{0x05849005, "SmartHBA-SA 16i", &SA5_access},
	{0x05859005, "SmartHBA-SA 4i4e", &SA5_access},
205 206 207 208 209
	{0x00761590, "HP Storage P1224 Array Controller", &SA5_access},
	{0x00871590, "HP Storage P1224e Array Controller", &SA5_access},
	{0x007D1590, "HP Storage P1228 Array Controller", &SA5_access},
	{0x00881590, "HP Storage P1228e Array Controller", &SA5_access},
	{0x333f103c, "HP StorageWorks 1210m Array Controller", &SA5_access},
210 211 212
	{0xFFFF103C, "Unknown Smart Array", &SA5_access},
};

K
Kevin Barnett 已提交
213 214 215 216 217 218 219 220 221 222
static struct scsi_transport_template *hpsa_sas_transport_template;
static int hpsa_add_sas_host(struct ctlr_info *h);
static void hpsa_delete_sas_host(struct ctlr_info *h);
static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node,
			struct hpsa_scsi_dev_t *device);
static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device);
static struct hpsa_scsi_dev_t
	*hpsa_find_device_by_sas_rphy(struct ctlr_info *h,
		struct sas_rphy *rphy);

223 224 225 226
#define SCSI_CMD_BUSY ((struct scsi_cmnd *)&hpsa_cmd_busy)
static const struct scsi_cmnd hpsa_cmd_busy;
#define SCSI_CMD_IDLE ((struct scsi_cmnd *)&hpsa_cmd_idle)
static const struct scsi_cmnd hpsa_cmd_idle;
227 228
static int number_of_controllers;

229 230
static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id);
static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id);
D
Don Brace 已提交
231
static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
232 233

#ifdef CONFIG_COMPAT
D
Don Brace 已提交
234 235
static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd,
	void __user *arg);
236 237 238 239
#endif

static void cmd_free(struct ctlr_info *h, struct CommandList *c);
static struct CommandList *cmd_alloc(struct ctlr_info *h);
240 241 242
static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c);
static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
					    struct scsi_cmnd *scmd);
243
static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
244
	void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
245
	int cmd_type);
246
static void hpsa_free_cmd_pool(struct ctlr_info *h);
247
#define VPD_PAGE (1 << 8)
248
#define HPSA_SIMPLE_ERROR_BITS 0x03
249

J
Jeff Garzik 已提交
250
static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
251 252 253
static void hpsa_scan_start(struct Scsi_Host *);
static int hpsa_scan_finished(struct Scsi_Host *sh,
	unsigned long elapsed_time);
D
Don Brace 已提交
254
static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth);
255 256

static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd);
257
static int hpsa_eh_abort_handler(struct scsi_cmnd *scsicmd);
258
static int hpsa_slave_alloc(struct scsi_device *sdev);
259
static int hpsa_slave_configure(struct scsi_device *sdev);
260 261
static void hpsa_slave_destroy(struct scsi_device *sdev);

D
Don Brace 已提交
262
static void hpsa_update_scsi_devices(struct ctlr_info *h);
263 264 265 266
static int check_for_unit_attention(struct ctlr_info *h,
	struct CommandList *c);
static void check_ioctl_unit_attention(struct ctlr_info *h,
	struct CommandList *c);
267 268
/* performant mode helper functions */
static void calc_bucket_map(int *bucket, int num_buckets,
D
Don Brace 已提交
269
	int nsgs, int min_blocks, u32 *bucket_map);
R
Robert Elliott 已提交
270 271
static void hpsa_free_performant_mode(struct ctlr_info *h);
static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h);
272
static inline u32 next_command(struct ctlr_info *h, u8 q);
273 274 275 276 277 278 279 280
static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
			       u32 *cfg_base_addr, u64 *cfg_base_addr_index,
			       u64 *cfg_offset);
static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
				    unsigned long *memory_bar);
static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id);
static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
				     int wait_for_ready);
281
static inline void finish_cmd(struct CommandList *c);
282
static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h);
283 284
#define BOARD_NOT_READY 0
#define BOARD_READY 1
285
static void hpsa_drain_accel_commands(struct ctlr_info *h);
286
static void hpsa_flush_cache(struct ctlr_info *h);
287 288
static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
	struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
289
	u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk);
290
static void hpsa_command_resubmit_worker(struct work_struct *work);
291 292
static u32 lockup_detected(struct ctlr_info *h);
static int detect_controller_lockup(struct ctlr_info *h);
S
Scott Teel 已提交
293
static void hpsa_disable_rld_caching(struct ctlr_info *h);
K
Kevin Barnett 已提交
294 295
static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
	struct ReportExtendedLUNdata *buf, int bufsize);
296
static int hpsa_luns_changed(struct ctlr_info *h);
297 298 299 300 301 302 303

static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
{
	unsigned long *priv = shost_priv(sdev->host);
	return (struct ctlr_info *) *priv;
}

304 305 306 307 308 309
static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh)
{
	unsigned long *priv = shost_priv(sh);
	return (struct ctlr_info *) *priv;
}

310 311 312 313 314
static inline bool hpsa_is_cmd_idle(struct CommandList *c)
{
	return c->scsi_cmd == SCSI_CMD_IDLE;
}

W
Webb Scales 已提交
315 316 317 318 319
static inline bool hpsa_is_pending_event(struct CommandList *c)
{
	return c->abort_pending || c->reset_pending;
}

320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341
/* extract sense key, asc, and ascq from sense data.  -1 means invalid. */
static void decode_sense_data(const u8 *sense_data, int sense_data_len,
			u8 *sense_key, u8 *asc, u8 *ascq)
{
	struct scsi_sense_hdr sshdr;
	bool rc;

	*sense_key = -1;
	*asc = -1;
	*ascq = -1;

	if (sense_data_len < 1)
		return;

	rc = scsi_normalize_sense(sense_data, sense_data_len, &sshdr);
	if (rc) {
		*sense_key = sshdr.sense_key;
		*asc = sshdr.asc;
		*ascq = sshdr.ascq;
	}
}

342 343 344
static int check_for_unit_attention(struct ctlr_info *h,
	struct CommandList *c)
{
345 346 347 348 349 350 351 352 353 354
	u8 sense_key, asc, ascq;
	int sense_len;

	if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
		sense_len = sizeof(c->err_info->SenseInfo);
	else
		sense_len = c->err_info->SenseLen;

	decode_sense_data(c->err_info->SenseInfo, sense_len,
				&sense_key, &asc, &ascq);
D
Don Brace 已提交
355
	if (sense_key != UNIT_ATTENTION || asc == 0xff)
356 357
		return 0;

358
	switch (asc) {
359
	case STATE_CHANGED:
360
		dev_warn(&h->pdev->dev,
361 362
			"%s: a state change detected, command retried\n",
			h->devname);
363 364
		break;
	case LUN_FAILED:
365
		dev_warn(&h->pdev->dev,
366
			"%s: LUN failure detected\n", h->devname);
367 368
		break;
	case REPORT_LUNS_CHANGED:
369
		dev_warn(&h->pdev->dev,
370
			"%s: report LUN data changed\n", h->devname);
371
	/*
372 373
	 * Note: this REPORT_LUNS_CHANGED condition only occurs on the external
	 * target (array) devices.
374 375 376
	 */
		break;
	case POWER_OR_RESET:
377 378 379
		dev_warn(&h->pdev->dev,
			"%s: a power on or device reset detected\n",
			h->devname);
380 381
		break;
	case UNIT_ATTENTION_CLEARED:
382 383 384
		dev_warn(&h->pdev->dev,
			"%s: unit attention cleared by another initiator\n",
			h->devname);
385 386
		break;
	default:
387 388 389
		dev_warn(&h->pdev->dev,
			"%s: unknown unit attention detected\n",
			h->devname);
390 391 392 393 394
		break;
	}
	return 1;
}

395 396 397 398 399 400 401 402 403 404
static int check_for_busy(struct ctlr_info *h, struct CommandList *c)
{
	if (c->err_info->CommandStatus != CMD_TARGET_STATUS ||
		(c->err_info->ScsiStatus != SAM_STAT_BUSY &&
		 c->err_info->ScsiStatus != SAM_STAT_TASK_SET_FULL))
		return 0;
	dev_warn(&h->pdev->dev, HPSA "device busy");
	return 1;
}

405 406 407 408 409 410 411 412 413 414 415 416 417 418
static u32 lockup_detected(struct ctlr_info *h);
static ssize_t host_show_lockup_detected(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	int ld;
	struct ctlr_info *h;
	struct Scsi_Host *shost = class_to_shost(dev);

	h = shost_to_hba(shost);
	ld = lockup_detected(h);

	return sprintf(buf, "ld=%d\n", ld);
}

419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442
static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev,
					 struct device_attribute *attr,
					 const char *buf, size_t count)
{
	int status, len;
	struct ctlr_info *h;
	struct Scsi_Host *shost = class_to_shost(dev);
	char tmpbuf[10];

	if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
		return -EACCES;
	len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
	strncpy(tmpbuf, buf, len);
	tmpbuf[len] = '\0';
	if (sscanf(tmpbuf, "%d", &status) != 1)
		return -EINVAL;
	h = shost_to_hba(shost);
	h->acciopath_status = !!status;
	dev_warn(&h->pdev->dev,
		"hpsa: HP SSD Smart Path %s via sysfs update.\n",
		h->acciopath_status ? "enabled" : "disabled");
	return count;
}

443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467
static ssize_t host_store_raid_offload_debug(struct device *dev,
					 struct device_attribute *attr,
					 const char *buf, size_t count)
{
	int debug_level, len;
	struct ctlr_info *h;
	struct Scsi_Host *shost = class_to_shost(dev);
	char tmpbuf[10];

	if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
		return -EACCES;
	len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
	strncpy(tmpbuf, buf, len);
	tmpbuf[len] = '\0';
	if (sscanf(tmpbuf, "%d", &debug_level) != 1)
		return -EINVAL;
	if (debug_level < 0)
		debug_level = 0;
	h = shost_to_hba(shost);
	h->raid_offload_debug = debug_level;
	dev_warn(&h->pdev->dev, "hpsa: Set raid_offload_debug level = %d\n",
		h->raid_offload_debug);
	return count;
}

468 469 470 471 472 473
static ssize_t host_store_rescan(struct device *dev,
				 struct device_attribute *attr,
				 const char *buf, size_t count)
{
	struct ctlr_info *h;
	struct Scsi_Host *shost = class_to_shost(dev);
474
	h = shost_to_hba(shost);
M
Mike Miller 已提交
475
	hpsa_scan_start(h->scsi_host);
476 477 478
	return count;
}

479 480 481 482 483 484 485 486 487 488 489 490 491 492 493
static ssize_t host_show_firmware_revision(struct device *dev,
	     struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct Scsi_Host *shost = class_to_shost(dev);
	unsigned char *fwrev;

	h = shost_to_hba(shost);
	if (!h->hba_inquiry_data)
		return 0;
	fwrev = &h->hba_inquiry_data[32];
	return snprintf(buf, 20, "%c%c%c%c\n",
		fwrev[0], fwrev[1], fwrev[2], fwrev[3]);
}

494 495 496 497 498 499
static ssize_t host_show_commands_outstanding(struct device *dev,
	     struct device_attribute *attr, char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct ctlr_info *h = shost_to_hba(shost);

500 501
	return snprintf(buf, 20, "%d\n",
			atomic_read(&h->commands_outstanding));
502 503
}

504 505 506 507 508 509 510 511
static ssize_t host_show_transport_mode(struct device *dev,
	struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct Scsi_Host *shost = class_to_shost(dev);

	h = shost_to_hba(shost);
	return snprintf(buf, 20, "%s\n",
512
		h->transMethod & CFGTBL_Trans_Performant ?
513 514 515
			"performant" : "simple");
}

516 517 518 519 520 521 522 523 524 525 526
static ssize_t host_show_hp_ssd_smart_path_status(struct device *dev,
	struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct Scsi_Host *shost = class_to_shost(dev);

	h = shost_to_hba(shost);
	return snprintf(buf, 30, "HP SSD Smart Path %s\n",
		(h->acciopath_status == 1) ?  "enabled" : "disabled");
}

527
/* List of controllers which cannot be hard reset on kexec with reset_devices */
528 529
static u32 unresettable_controller[] = {
	0x324a103C, /* Smart Array P712m */
S
Stephen Cameron 已提交
530
	0x324b103C, /* Smart Array P711m */
531 532 533 534 535 536 537 538 539 540
	0x3223103C, /* Smart Array P800 */
	0x3234103C, /* Smart Array P400 */
	0x3235103C, /* Smart Array P400i */
	0x3211103C, /* Smart Array E200i */
	0x3212103C, /* Smart Array E200 */
	0x3213103C, /* Smart Array E200i */
	0x3214103C, /* Smart Array E200i */
	0x3215103C, /* Smart Array E200i */
	0x3237103C, /* Smart Array E500 */
	0x323D103C, /* Smart Array P700m */
541
	0x40800E11, /* Smart Array 5i */
542 543
	0x409C0E11, /* Smart Array 6400 */
	0x409D0E11, /* Smart Array 6400 EM */
544 545 546 547 548 549
	0x40700E11, /* Smart Array 5300 */
	0x40820E11, /* Smart Array 532 */
	0x40830E11, /* Smart Array 5312 */
	0x409A0E11, /* Smart Array 641 */
	0x409B0E11, /* Smart Array 642 */
	0x40910E11, /* Smart Array 6i */
550 551
};

552 553
/* List of controllers which cannot even be soft reset */
static u32 soft_unresettable_controller[] = {
554
	0x40800E11, /* Smart Array 5i */
555 556 557 558 559 560
	0x40700E11, /* Smart Array 5300 */
	0x40820E11, /* Smart Array 532 */
	0x40830E11, /* Smart Array 5312 */
	0x409A0E11, /* Smart Array 641 */
	0x409B0E11, /* Smart Array 642 */
	0x40910E11, /* Smart Array 6i */
561 562 563 564 565 566 567 568 569 570 571
	/* Exclude 640x boards.  These are two pci devices in one slot
	 * which share a battery backed cache module.  One controls the
	 * cache, the other accesses the cache through the one that controls
	 * it.  If we reset the one controlling the cache, the other will
	 * likely not be happy.  Just forbid resetting this conjoined mess.
	 * The 640x isn't really supported by hpsa anyway.
	 */
	0x409C0E11, /* Smart Array 6400 */
	0x409D0E11, /* Smart Array 6400 EM */
};

S
Stephen Cameron 已提交
572 573 574 575 576 577 578
static u32 needs_abort_tags_swizzled[] = {
	0x323D103C, /* Smart Array P700m */
	0x324a103C, /* Smart Array P712m */
	0x324b103C, /* SmartArray P711m */
};

static int board_id_in_array(u32 a[], int nelems, u32 board_id)
579 580 581
{
	int i;

S
Stephen Cameron 已提交
582 583 584 585
	for (i = 0; i < nelems; i++)
		if (a[i] == board_id)
			return 1;
	return 0;
586 587
}

S
Stephen Cameron 已提交
588
static int ctlr_is_hard_resettable(u32 board_id)
589
{
S
Stephen Cameron 已提交
590 591 592
	return !board_id_in_array(unresettable_controller,
			ARRAY_SIZE(unresettable_controller), board_id);
}
593

S
Stephen Cameron 已提交
594 595 596 597
static int ctlr_is_soft_resettable(u32 board_id)
{
	return !board_id_in_array(soft_unresettable_controller,
			ARRAY_SIZE(soft_unresettable_controller), board_id);
598 599
}

600 601 602 603 604 605
static int ctlr_is_resettable(u32 board_id)
{
	return ctlr_is_hard_resettable(board_id) ||
		ctlr_is_soft_resettable(board_id);
}

S
Stephen Cameron 已提交
606 607 608 609 610 611
static int ctlr_needs_abort_tags_swizzled(u32 board_id)
{
	return board_id_in_array(needs_abort_tags_swizzled,
			ARRAY_SIZE(needs_abort_tags_swizzled), board_id);
}

612 613 614 615 616 617 618
static ssize_t host_show_resettable(struct device *dev,
	struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct Scsi_Host *shost = class_to_shost(dev);

	h = shost_to_hba(shost);
619
	return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id));
620 621
}

622 623 624 625 626
static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[])
{
	return (scsi3addr[3] & 0xC0) == 0x40;
}

627
static const char * const raid_label[] = { "0", "4", "1(+0)", "5", "5+1", "6",
D
Don Brace 已提交
628
	"1(+0)ADM", "UNKNOWN", "PHYS DRV"
629
};
630 631 632 633 634 635 636
#define HPSA_RAID_0	0
#define HPSA_RAID_4	1
#define HPSA_RAID_1	2	/* also used for RAID 10 */
#define HPSA_RAID_5	3	/* also used for RAID 50 */
#define HPSA_RAID_51	4
#define HPSA_RAID_6	5	/* also used for RAID 60 */
#define HPSA_RAID_ADM	6	/* also used for RAID 1+0 ADM */
D
Don Brace 已提交
637 638
#define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 2)
#define PHYSICAL_DRIVE (ARRAY_SIZE(raid_label) - 1)
639

640 641 642 643
static inline bool is_logical_device(struct hpsa_scsi_dev_t *device)
{
	return !device->physical_device;
}
644 645 646 647 648

static ssize_t raid_level_show(struct device *dev,
	     struct device_attribute *attr, char *buf)
{
	ssize_t l = 0;
649
	unsigned char rlevel;
650 651 652 653 654 655 656 657 658 659 660 661 662 663 664
	struct ctlr_info *h;
	struct scsi_device *sdev;
	struct hpsa_scsi_dev_t *hdev;
	unsigned long flags;

	sdev = to_scsi_device(dev);
	h = sdev_to_hba(sdev);
	spin_lock_irqsave(&h->lock, flags);
	hdev = sdev->hostdata;
	if (!hdev) {
		spin_unlock_irqrestore(&h->lock, flags);
		return -ENODEV;
	}

	/* Is this even a logical drive? */
665
	if (!is_logical_device(hdev)) {
666 667 668 669 670 671 672
		spin_unlock_irqrestore(&h->lock, flags);
		l = snprintf(buf, PAGE_SIZE, "N/A\n");
		return l;
	}

	rlevel = hdev->raid_level;
	spin_unlock_irqrestore(&h->lock, flags);
673
	if (rlevel > RAID_UNKNOWN)
674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730
		rlevel = RAID_UNKNOWN;
	l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]);
	return l;
}

static ssize_t lunid_show(struct device *dev,
	     struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct scsi_device *sdev;
	struct hpsa_scsi_dev_t *hdev;
	unsigned long flags;
	unsigned char lunid[8];

	sdev = to_scsi_device(dev);
	h = sdev_to_hba(sdev);
	spin_lock_irqsave(&h->lock, flags);
	hdev = sdev->hostdata;
	if (!hdev) {
		spin_unlock_irqrestore(&h->lock, flags);
		return -ENODEV;
	}
	memcpy(lunid, hdev->scsi3addr, sizeof(lunid));
	spin_unlock_irqrestore(&h->lock, flags);
	return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
		lunid[0], lunid[1], lunid[2], lunid[3],
		lunid[4], lunid[5], lunid[6], lunid[7]);
}

static ssize_t unique_id_show(struct device *dev,
	     struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct scsi_device *sdev;
	struct hpsa_scsi_dev_t *hdev;
	unsigned long flags;
	unsigned char sn[16];

	sdev = to_scsi_device(dev);
	h = sdev_to_hba(sdev);
	spin_lock_irqsave(&h->lock, flags);
	hdev = sdev->hostdata;
	if (!hdev) {
		spin_unlock_irqrestore(&h->lock, flags);
		return -ENODEV;
	}
	memcpy(sn, hdev->device_id, sizeof(sn));
	spin_unlock_irqrestore(&h->lock, flags);
	return snprintf(buf, 16 * 2 + 2,
			"%02X%02X%02X%02X%02X%02X%02X%02X"
			"%02X%02X%02X%02X%02X%02X%02X%02X\n",
			sn[0], sn[1], sn[2], sn[3],
			sn[4], sn[5], sn[6], sn[7],
			sn[8], sn[9], sn[10], sn[11],
			sn[12], sn[13], sn[14], sn[15]);
}

731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753
static ssize_t sas_address_show(struct device *dev,
	      struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct scsi_device *sdev;
	struct hpsa_scsi_dev_t *hdev;
	unsigned long flags;
	u64 sas_address;

	sdev = to_scsi_device(dev);
	h = sdev_to_hba(sdev);
	spin_lock_irqsave(&h->lock, flags);
	hdev = sdev->hostdata;
	if (!hdev || is_logical_device(hdev) || !hdev->expose_device) {
		spin_unlock_irqrestore(&h->lock, flags);
		return -ENODEV;
	}
	sas_address = hdev->sas_address;
	spin_unlock_irqrestore(&h->lock, flags);

	return snprintf(buf, PAGE_SIZE, "0x%016llx\n", sas_address);
}

754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775
static ssize_t host_show_hp_ssd_smart_path_enabled(struct device *dev,
	     struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct scsi_device *sdev;
	struct hpsa_scsi_dev_t *hdev;
	unsigned long flags;
	int offload_enabled;

	sdev = to_scsi_device(dev);
	h = sdev_to_hba(sdev);
	spin_lock_irqsave(&h->lock, flags);
	hdev = sdev->hostdata;
	if (!hdev) {
		spin_unlock_irqrestore(&h->lock, flags);
		return -ENODEV;
	}
	offload_enabled = hdev->offload_enabled;
	spin_unlock_irqrestore(&h->lock, flags);
	return snprintf(buf, 20, "%d\n", offload_enabled);
}

776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810
#define MAX_PATHS 8
static ssize_t path_info_show(struct device *dev,
	     struct device_attribute *attr, char *buf)
{
	struct ctlr_info *h;
	struct scsi_device *sdev;
	struct hpsa_scsi_dev_t *hdev;
	unsigned long flags;
	int i;
	int output_len = 0;
	u8 box;
	u8 bay;
	u8 path_map_index = 0;
	char *active;
	unsigned char phys_connector[2];

	sdev = to_scsi_device(dev);
	h = sdev_to_hba(sdev);
	spin_lock_irqsave(&h->devlock, flags);
	hdev = sdev->hostdata;
	if (!hdev) {
		spin_unlock_irqrestore(&h->devlock, flags);
		return -ENODEV;
	}

	bay = hdev->bay;
	for (i = 0; i < MAX_PATHS; i++) {
		path_map_index = 1<<i;
		if (i == hdev->active_path_index)
			active = "Active";
		else if (hdev->path_map & path_map_index)
			active = "Inactive";
		else
			continue;

811 812 813
		output_len += scnprintf(buf + output_len,
				PAGE_SIZE - output_len,
				"[%d:%d:%d:%d] %20.20s ",
814 815 816 817
				h->scsi_host->host_no,
				hdev->bus, hdev->target, hdev->lun,
				scsi_device_type(hdev->devtype));

818
		if (hdev->devtype == TYPE_RAID || is_logical_device(hdev)) {
D
Don Brace 已提交
819
			output_len += scnprintf(buf + output_len,
820 821
						PAGE_SIZE - output_len,
						"%s\n", active);
822 823 824 825 826 827 828 829 830 831
			continue;
		}

		box = hdev->box[i];
		memcpy(&phys_connector, &hdev->phys_connector[i],
			sizeof(phys_connector));
		if (phys_connector[0] < '0')
			phys_connector[0] = '0';
		if (phys_connector[1] < '0')
			phys_connector[1] = '0';
832
		output_len += scnprintf(buf + output_len,
833
				PAGE_SIZE - output_len,
834 835
				"PORT: %.2s ",
				phys_connector);
D
Don Brace 已提交
836 837
		if ((hdev->devtype == TYPE_DISK || hdev->devtype == TYPE_ZBC) &&
			hdev->expose_device) {
838
			if (box == 0 || box == 0xFF) {
D
Don Brace 已提交
839
				output_len += scnprintf(buf + output_len,
840
					PAGE_SIZE - output_len,
841 842 843
					"BAY: %hhu %s\n",
					bay, active);
			} else {
D
Don Brace 已提交
844
				output_len += scnprintf(buf + output_len,
845
					PAGE_SIZE - output_len,
846 847 848 849
					"BOX: %hhu BAY: %hhu %s\n",
					box, bay, active);
			}
		} else if (box != 0 && box != 0xFF) {
D
Don Brace 已提交
850
			output_len += scnprintf(buf + output_len,
851
				PAGE_SIZE - output_len, "BOX: %hhu %s\n",
852 853
				box, active);
		} else
D
Don Brace 已提交
854
			output_len += scnprintf(buf + output_len,
855
				PAGE_SIZE - output_len, "%s\n", active);
856 857 858
	}

	spin_unlock_irqrestore(&h->devlock, flags);
859
	return output_len;
860 861
}

862 863 864 865
static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
866
static DEVICE_ATTR(sas_address, S_IRUGO, sas_address_show, NULL);
867 868
static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO,
			host_show_hp_ssd_smart_path_enabled, NULL);
869
static DEVICE_ATTR(path_info, S_IRUGO, path_info_show, NULL);
870 871 872
static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH,
		host_show_hp_ssd_smart_path_status,
		host_store_hp_ssd_smart_path_status);
873 874
static DEVICE_ATTR(raid_offload_debug, S_IWUSR, NULL,
			host_store_raid_offload_debug);
875 876 877 878 879 880
static DEVICE_ATTR(firmware_revision, S_IRUGO,
	host_show_firmware_revision, NULL);
static DEVICE_ATTR(commands_outstanding, S_IRUGO,
	host_show_commands_outstanding, NULL);
static DEVICE_ATTR(transport_mode, S_IRUGO,
	host_show_transport_mode, NULL);
881 882
static DEVICE_ATTR(resettable, S_IRUGO,
	host_show_resettable, NULL);
883 884
static DEVICE_ATTR(lockup_detected, S_IRUGO,
	host_show_lockup_detected, NULL);
885 886 887 888 889

static struct device_attribute *hpsa_sdev_attrs[] = {
	&dev_attr_raid_level,
	&dev_attr_lunid,
	&dev_attr_unique_id,
890
	&dev_attr_hp_ssd_smart_path_enabled,
891
	&dev_attr_path_info,
892
	&dev_attr_sas_address,
893 894 895 896 897 898 899 900
	NULL,
};

static struct device_attribute *hpsa_shost_attrs[] = {
	&dev_attr_rescan,
	&dev_attr_firmware_revision,
	&dev_attr_commands_outstanding,
	&dev_attr_transport_mode,
901
	&dev_attr_resettable,
902
	&dev_attr_hp_ssd_smart_path_status,
903
	&dev_attr_raid_offload_debug,
904
	&dev_attr_lockup_detected,
905 906 907
	NULL,
};

908 909 910
#define HPSA_NRESERVED_CMDS	(HPSA_CMDS_RESERVED_FOR_ABORTS + \
		HPSA_CMDS_RESERVED_FOR_DRIVER + HPSA_MAX_CONCURRENT_PASSTHRUS)

911 912
static struct scsi_host_template hpsa_driver_template = {
	.module			= THIS_MODULE,
913 914
	.name			= HPSA,
	.proc_name		= HPSA,
915 916 917
	.queuecommand		= hpsa_scsi_queue_command,
	.scan_start		= hpsa_scan_start,
	.scan_finished		= hpsa_scan_finished,
D
Don Brace 已提交
918
	.change_queue_depth	= hpsa_change_queue_depth,
919 920
	.this_id		= -1,
	.use_clustering		= ENABLE_CLUSTERING,
921
	.eh_abort_handler	= hpsa_eh_abort_handler,
922 923 924
	.eh_device_reset_handler = hpsa_eh_device_reset_handler,
	.ioctl			= hpsa_ioctl,
	.slave_alloc		= hpsa_slave_alloc,
925
	.slave_configure	= hpsa_slave_configure,
926 927 928 929 930 931
	.slave_destroy		= hpsa_slave_destroy,
#ifdef CONFIG_COMPAT
	.compat_ioctl		= hpsa_compat_ioctl,
#endif
	.sdev_attrs = hpsa_sdev_attrs,
	.shost_attrs = hpsa_shost_attrs,
932
	.max_sectors = 8192,
933
	.no_write_same = 1,
934 935
};

936
static inline u32 next_command(struct ctlr_info *h, u8 q)
937 938
{
	u32 a;
939
	struct reply_queue_buffer *rq = &h->reply_queue[q];
940

941 942 943
	if (h->transMethod & CFGTBL_Trans_io_accel1)
		return h->access.command_completed(h, q);

944
	if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
945
		return h->access.command_completed(h, q);
946

947 948 949
	if ((rq->head[rq->current_entry] & 1) == rq->wraparound) {
		a = rq->head[rq->current_entry];
		rq->current_entry++;
950
		atomic_dec(&h->commands_outstanding);
951 952 953 954
	} else {
		a = FIFO_EMPTY;
	}
	/* Check for wraparound */
955 956 957
	if (rq->current_entry == h->max_commands) {
		rq->current_entry = 0;
		rq->wraparound ^= 1;
958 959 960 961
	}
	return a;
}

962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987
/*
 * There are some special bits in the bus address of the
 * command that we have to set for the controller to know
 * how to process the command:
 *
 * Normal performant mode:
 * bit 0: 1 means performant mode, 0 means simple mode.
 * bits 1-3 = block fetch table entry
 * bits 4-6 = command type (== 0)
 *
 * ioaccel1 mode:
 * bit 0 = "performant mode" bit.
 * bits 1-3 = block fetch table entry
 * bits 4-6 = command type (== 110)
 * (command type is needed because ioaccel1 mode
 * commands are submitted through the same register as normal
 * mode commands, so this is how the controller knows whether
 * the command is normal mode or ioaccel1 mode.)
 *
 * ioaccel2 mode:
 * bit 0 = "performant mode" bit.
 * bits 1-4 = block fetch table entry (note extra bit)
 * bits 4-6 = not needed, because ioaccel2 mode has
 * a separate special register for submitting commands.
 */

988 989
/*
 * set_performant_mode: Modify the tag for cciss performant
990 991 992
 * set bit 0 for pull model, bits 3-1 for block fetch
 * register number
 */
993 994 995
#define DEFAULT_REPLY_QUEUE (-1)
static void set_performant_mode(struct ctlr_info *h, struct CommandList *c,
					int reply_queue)
996
{
997
	if (likely(h->transMethod & CFGTBL_Trans_Performant)) {
998
		c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1);
999 1000 1001
		if (unlikely(!h->msix_vector))
			return;
		if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
1002
			c->Header.ReplyQueue =
1003
				raw_smp_processor_id() % h->nreply_queues;
1004 1005
		else
			c->Header.ReplyQueue = reply_queue % h->nreply_queues;
1006
	}
1007 1008
}

1009
static void set_ioaccel1_performant_mode(struct ctlr_info *h,
1010 1011
						struct CommandList *c,
						int reply_queue)
1012 1013 1014
{
	struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];

1015 1016
	/*
	 * Tell the controller to post the reply to the queue for this
1017 1018
	 * processor.  This seems to give the best I/O throughput.
	 */
1019 1020 1021 1022 1023 1024
	if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
		cp->ReplyQueue = smp_processor_id() % h->nreply_queues;
	else
		cp->ReplyQueue = reply_queue % h->nreply_queues;
	/*
	 * Set the bits in the address sent down to include:
1025 1026 1027 1028 1029 1030 1031 1032
	 *  - performant mode bit (bit 0)
	 *  - pull count (bits 1-3)
	 *  - command type (bits 4-6)
	 */
	c->busaddr |= 1 | (h->ioaccel1_blockFetchTable[c->Header.SGList] << 1) |
					IOACCEL1_BUSADDR_CMDTYPE;
}

1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054
static void set_ioaccel2_tmf_performant_mode(struct ctlr_info *h,
						struct CommandList *c,
						int reply_queue)
{
	struct hpsa_tmf_struct *cp = (struct hpsa_tmf_struct *)
		&h->ioaccel2_cmd_pool[c->cmdindex];

	/* Tell the controller to post the reply to the queue for this
	 * processor.  This seems to give the best I/O throughput.
	 */
	if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
		cp->reply_queue = smp_processor_id() % h->nreply_queues;
	else
		cp->reply_queue = reply_queue % h->nreply_queues;
	/* Set the bits in the address sent down to include:
	 *  - performant mode bit not used in ioaccel mode 2
	 *  - pull count (bits 0-3)
	 *  - command type isn't needed for ioaccel2
	 */
	c->busaddr |= h->ioaccel2_blockFetchTable[0];
}

1055
static void set_ioaccel2_performant_mode(struct ctlr_info *h,
1056 1057
						struct CommandList *c,
						int reply_queue)
1058 1059 1060
{
	struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];

1061 1062
	/*
	 * Tell the controller to post the reply to the queue for this
1063 1064
	 * processor.  This seems to give the best I/O throughput.
	 */
1065 1066 1067 1068 1069 1070
	if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
		cp->reply_queue = smp_processor_id() % h->nreply_queues;
	else
		cp->reply_queue = reply_queue % h->nreply_queues;
	/*
	 * Set the bits in the address sent down to include:
1071 1072 1073 1074 1075 1076 1077
	 *  - performant mode bit not used in ioaccel mode 2
	 *  - pull count (bits 0-3)
	 *  - command type isn't needed for ioaccel2
	 */
	c->busaddr |= (h->ioaccel2_blockFetchTable[cp->sg_count]);
}

1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106
static int is_firmware_flash_cmd(u8 *cdb)
{
	return cdb[0] == BMIC_WRITE && cdb[6] == BMIC_FLASH_FIRMWARE;
}

/*
 * During firmware flash, the heartbeat register may not update as frequently
 * as it should.  So we dial down lockup detection during firmware flash. and
 * dial it back up when firmware flash completes.
 */
#define HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH (240 * HZ)
#define HEARTBEAT_SAMPLE_INTERVAL (30 * HZ)
static void dial_down_lockup_detection_during_fw_flash(struct ctlr_info *h,
		struct CommandList *c)
{
	if (!is_firmware_flash_cmd(c->Request.CDB))
		return;
	atomic_inc(&h->firmware_flash_in_progress);
	h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH;
}

static void dial_up_lockup_detection_on_fw_flash_complete(struct ctlr_info *h,
		struct CommandList *c)
{
	if (is_firmware_flash_cmd(c->Request.CDB) &&
		atomic_dec_and_test(&h->firmware_flash_in_progress))
		h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
}

1107 1108
static void __enqueue_cmd_and_start_io(struct ctlr_info *h,
	struct CommandList *c, int reply_queue)
1109
{
1110 1111
	dial_down_lockup_detection_during_fw_flash(h, c);
	atomic_inc(&h->commands_outstanding);
1112 1113
	switch (c->cmd_type) {
	case CMD_IOACCEL1:
1114
		set_ioaccel1_performant_mode(h, c, reply_queue);
1115
		writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
1116 1117
		break;
	case CMD_IOACCEL2:
1118
		set_ioaccel2_performant_mode(h, c, reply_queue);
1119
		writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
1120
		break;
1121 1122 1123 1124
	case IOACCEL2_TMF:
		set_ioaccel2_tmf_performant_mode(h, c, reply_queue);
		writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
		break;
1125
	default:
1126
		set_performant_mode(h, c, reply_queue);
1127
		h->access.submit_command(h, c);
1128
	}
1129 1130
}

1131
static void enqueue_cmd_and_start_io(struct ctlr_info *h, struct CommandList *c)
1132
{
W
Webb Scales 已提交
1133
	if (unlikely(hpsa_is_pending_event(c)))
1134 1135
		return finish_cmd(c);

1136 1137 1138
	__enqueue_cmd_and_start_io(h, c, DEFAULT_REPLY_QUEUE);
}

1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152
static inline int is_hba_lunid(unsigned char scsi3addr[])
{
	return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0;
}

static inline int is_scsi_rev_5(struct ctlr_info *h)
{
	if (!h->hba_inquiry_data)
		return 0;
	if ((h->hba_inquiry_data[2] & 0x07) == 5)
		return 1;
	return 0;
}

1153 1154 1155 1156 1157 1158 1159
static int hpsa_find_target_lun(struct ctlr_info *h,
	unsigned char scsi3addr[], int bus, int *target, int *lun)
{
	/* finds an unused bus, target, lun for a new physical device
	 * assumes h->devlock is held
	 */
	int i, found = 0;
1160
	DECLARE_BITMAP(lun_taken, HPSA_MAX_DEVICES);
1161

1162
	bitmap_zero(lun_taken, HPSA_MAX_DEVICES);
1163 1164 1165

	for (i = 0; i < h->ndevices; i++) {
		if (h->dev[i]->bus == bus && h->dev[i]->target != -1)
1166
			__set_bit(h->dev[i]->target, lun_taken);
1167 1168
	}

1169 1170 1171 1172 1173 1174
	i = find_first_zero_bit(lun_taken, HPSA_MAX_DEVICES);
	if (i < HPSA_MAX_DEVICES) {
		/* *bus = 1; */
		*target = i;
		*lun = 0;
		found = 1;
1175 1176 1177 1178
	}
	return !found;
}

D
Don Brace 已提交
1179
static void hpsa_show_dev_msg(const char *level, struct ctlr_info *h,
1180 1181
	struct hpsa_scsi_dev_t *dev, char *description)
{
D
Don Brace 已提交
1182 1183 1184
#define LABEL_SIZE 25
	char label[LABEL_SIZE];

1185 1186 1187
	if (h == NULL || h->pdev == NULL || h->scsi_host == NULL)
		return;

D
Don Brace 已提交
1188 1189 1190 1191 1192 1193 1194 1195
	switch (dev->devtype) {
	case TYPE_RAID:
		snprintf(label, LABEL_SIZE, "controller");
		break;
	case TYPE_ENCLOSURE:
		snprintf(label, LABEL_SIZE, "enclosure");
		break;
	case TYPE_DISK:
D
Don Brace 已提交
1196
	case TYPE_ZBC:
D
Don Brace 已提交
1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220
		if (dev->external)
			snprintf(label, LABEL_SIZE, "external");
		else if (!is_logical_dev_addr_mode(dev->scsi3addr))
			snprintf(label, LABEL_SIZE, "%s",
				raid_label[PHYSICAL_DRIVE]);
		else
			snprintf(label, LABEL_SIZE, "RAID-%s",
				dev->raid_level > RAID_UNKNOWN ? "?" :
				raid_label[dev->raid_level]);
		break;
	case TYPE_ROM:
		snprintf(label, LABEL_SIZE, "rom");
		break;
	case TYPE_TAPE:
		snprintf(label, LABEL_SIZE, "tape");
		break;
	case TYPE_MEDIUM_CHANGER:
		snprintf(label, LABEL_SIZE, "changer");
		break;
	default:
		snprintf(label, LABEL_SIZE, "UNKNOWN");
		break;
	}

1221
	dev_printk(level, &h->pdev->dev,
D
Don Brace 已提交
1222
			"scsi %d:%d:%d:%d: %s %s %.8s %.16s %s SSDSmartPathCap%c En%c Exp=%d\n",
1223 1224 1225 1226 1227
			h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
			description,
			scsi_device_type(dev->devtype),
			dev->vendor,
			dev->model,
D
Don Brace 已提交
1228
			label,
1229 1230
			dev->offload_config ? '+' : '-',
			dev->offload_enabled ? '+' : '-',
1231
			dev->expose_device);
1232 1233
}

1234
/* Add an entry into h->dev[] array. */
D
Don Brace 已提交
1235
static int hpsa_scsi_add_entry(struct ctlr_info *h,
1236 1237 1238 1239 1240 1241 1242 1243 1244
		struct hpsa_scsi_dev_t *device,
		struct hpsa_scsi_dev_t *added[], int *nadded)
{
	/* assumes h->devlock is held */
	int n = h->ndevices;
	int i;
	unsigned char addr1[8], addr2[8];
	struct hpsa_scsi_dev_t *sd;

1245
	if (n >= HPSA_MAX_DEVICES) {
1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257
		dev_err(&h->pdev->dev, "too many devices, some will be "
			"inaccessible.\n");
		return -1;
	}

	/* physical devices do not have lun or target assigned until now. */
	if (device->lun != -1)
		/* Logical device, lun is already assigned. */
		goto lun_assigned;

	/* If this device a non-zero lun of a multi-lun device
	 * byte 4 of the 8-byte LUN addr will contain the logical
D
Don Brace 已提交
1258
	 * unit no, zero otherwise.
1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269
	 */
	if (device->scsi3addr[4] == 0) {
		/* This is not a non-zero lun of a multi-lun device */
		if (hpsa_find_target_lun(h, device->scsi3addr,
			device->bus, &device->target, &device->lun) != 0)
			return -1;
		goto lun_assigned;
	}

	/* This is a non-zero lun of a multi-lun device.
	 * Search through our list and find the device which
1270
	 * has the same 8 byte LUN address, excepting byte 4 and 5.
1271 1272 1273 1274 1275
	 * Assign the same bus and target for this new LUN.
	 * Use the logical unit number from the firmware.
	 */
	memcpy(addr1, device->scsi3addr, 8);
	addr1[4] = 0;
1276
	addr1[5] = 0;
1277 1278 1279 1280
	for (i = 0; i < n; i++) {
		sd = h->dev[i];
		memcpy(addr2, sd->scsi3addr, 8);
		addr2[4] = 0;
1281 1282
		addr2[5] = 0;
		/* differ only in byte 4 and 5? */
1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302
		if (memcmp(addr1, addr2, 8) == 0) {
			device->bus = sd->bus;
			device->target = sd->target;
			device->lun = device->scsi3addr[4];
			break;
		}
	}
	if (device->lun == -1) {
		dev_warn(&h->pdev->dev, "physical device with no LUN=0,"
			" suspect firmware bug or unsupported hardware "
			"configuration.\n");
			return -1;
	}

lun_assigned:

	h->dev[n] = device;
	h->ndevices++;
	added[*nadded] = device;
	(*nadded)++;
1303
	hpsa_show_dev_msg(KERN_INFO, h, device,
1304
		device->expose_device ? "added" : "masked");
1305 1306
	device->offload_to_be_enabled = device->offload_enabled;
	device->offload_enabled = 0;
1307 1308 1309
	return 0;
}

1310
/* Update an entry in h->dev[] array. */
D
Don Brace 已提交
1311
static void hpsa_scsi_update_entry(struct ctlr_info *h,
1312 1313
	int entry, struct hpsa_scsi_dev_t *new_entry)
{
1314
	int offload_enabled;
1315 1316 1317 1318 1319
	/* assumes h->devlock is held */
	BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);

	/* Raid level changed. */
	h->dev[entry]->raid_level = new_entry->raid_level;
1320

1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333
	/* Raid offload parameters changed.  Careful about the ordering. */
	if (new_entry->offload_config && new_entry->offload_enabled) {
		/*
		 * if drive is newly offload_enabled, we want to copy the
		 * raid map data first.  If previously offload_enabled and
		 * offload_config were set, raid map data had better be
		 * the same as it was before.  if raid map data is changed
		 * then it had better be the case that
		 * h->dev[entry]->offload_enabled is currently 0.
		 */
		h->dev[entry]->raid_map = new_entry->raid_map;
		h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
	}
1334 1335 1336 1337 1338
	if (new_entry->hba_ioaccel_enabled) {
		h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
		wmb(); /* set ioaccel_handle *before* hba_ioaccel_enabled */
	}
	h->dev[entry]->hba_ioaccel_enabled = new_entry->hba_ioaccel_enabled;
1339
	h->dev[entry]->offload_config = new_entry->offload_config;
1340
	h->dev[entry]->offload_to_mirror = new_entry->offload_to_mirror;
1341
	h->dev[entry]->queue_depth = new_entry->queue_depth;
1342

1343 1344 1345 1346 1347 1348 1349 1350 1351
	/*
	 * We can turn off ioaccel offload now, but need to delay turning
	 * it on until we can update h->dev[entry]->phys_disk[], but we
	 * can't do that until all the devices are updated.
	 */
	h->dev[entry]->offload_to_be_enabled = new_entry->offload_enabled;
	if (!new_entry->offload_enabled)
		h->dev[entry]->offload_enabled = 0;

1352 1353
	offload_enabled = h->dev[entry]->offload_enabled;
	h->dev[entry]->offload_enabled = h->dev[entry]->offload_to_be_enabled;
1354
	hpsa_show_dev_msg(KERN_INFO, h, h->dev[entry], "updated");
1355
	h->dev[entry]->offload_enabled = offload_enabled;
1356 1357
}

1358
/* Replace an entry from h->dev[] array. */
D
Don Brace 已提交
1359
static void hpsa_scsi_replace_entry(struct ctlr_info *h,
1360 1361 1362 1363 1364
	int entry, struct hpsa_scsi_dev_t *new_entry,
	struct hpsa_scsi_dev_t *added[], int *nadded,
	struct hpsa_scsi_dev_t *removed[], int *nremoved)
{
	/* assumes h->devlock is held */
1365
	BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1366 1367
	removed[*nremoved] = h->dev[entry];
	(*nremoved)++;
1368 1369 1370 1371 1372 1373 1374 1375 1376 1377

	/*
	 * New physical devices won't have target/lun assigned yet
	 * so we need to preserve the values in the slot we are replacing.
	 */
	if (new_entry->target == -1) {
		new_entry->target = h->dev[entry]->target;
		new_entry->lun = h->dev[entry]->lun;
	}

1378 1379 1380
	h->dev[entry] = new_entry;
	added[*nadded] = new_entry;
	(*nadded)++;
1381
	hpsa_show_dev_msg(KERN_INFO, h, new_entry, "replaced");
1382 1383
	new_entry->offload_to_be_enabled = new_entry->offload_enabled;
	new_entry->offload_enabled = 0;
1384 1385
}

1386
/* Remove an entry from h->dev[] array. */
D
Don Brace 已提交
1387
static void hpsa_scsi_remove_entry(struct ctlr_info *h, int entry,
1388 1389 1390 1391 1392 1393
	struct hpsa_scsi_dev_t *removed[], int *nremoved)
{
	/* assumes h->devlock is held */
	int i;
	struct hpsa_scsi_dev_t *sd;

1394
	BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1395 1396 1397 1398 1399 1400 1401 1402

	sd = h->dev[entry];
	removed[*nremoved] = h->dev[entry];
	(*nremoved)++;

	for (i = entry; i < h->ndevices-1; i++)
		h->dev[i] = h->dev[i+1];
	h->ndevices--;
1403
	hpsa_show_dev_msg(KERN_INFO, h, sd, "removed");
1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461
}

#define SCSI3ADDR_EQ(a, b) ( \
	(a)[7] == (b)[7] && \
	(a)[6] == (b)[6] && \
	(a)[5] == (b)[5] && \
	(a)[4] == (b)[4] && \
	(a)[3] == (b)[3] && \
	(a)[2] == (b)[2] && \
	(a)[1] == (b)[1] && \
	(a)[0] == (b)[0])

static void fixup_botched_add(struct ctlr_info *h,
	struct hpsa_scsi_dev_t *added)
{
	/* called when scsi_add_device fails in order to re-adjust
	 * h->dev[] to match the mid layer's view.
	 */
	unsigned long flags;
	int i, j;

	spin_lock_irqsave(&h->lock, flags);
	for (i = 0; i < h->ndevices; i++) {
		if (h->dev[i] == added) {
			for (j = i; j < h->ndevices-1; j++)
				h->dev[j] = h->dev[j+1];
			h->ndevices--;
			break;
		}
	}
	spin_unlock_irqrestore(&h->lock, flags);
	kfree(added);
}

static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1,
	struct hpsa_scsi_dev_t *dev2)
{
	/* we compare everything except lun and target as these
	 * are not yet assigned.  Compare parts likely
	 * to differ first
	 */
	if (memcmp(dev1->scsi3addr, dev2->scsi3addr,
		sizeof(dev1->scsi3addr)) != 0)
		return 0;
	if (memcmp(dev1->device_id, dev2->device_id,
		sizeof(dev1->device_id)) != 0)
		return 0;
	if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0)
		return 0;
	if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0)
		return 0;
	if (dev1->devtype != dev2->devtype)
		return 0;
	if (dev1->bus != dev2->bus)
		return 0;
	return 1;
}

1462 1463 1464 1465 1466 1467 1468 1469 1470
static inline int device_updated(struct hpsa_scsi_dev_t *dev1,
	struct hpsa_scsi_dev_t *dev2)
{
	/* Device attributes that can change, but don't mean
	 * that the device is a different device, nor that the OS
	 * needs to be told anything about the change.
	 */
	if (dev1->raid_level != dev2->raid_level)
		return 1;
1471 1472 1473 1474
	if (dev1->offload_config != dev2->offload_config)
		return 1;
	if (dev1->offload_enabled != dev2->offload_enabled)
		return 1;
D
Don Brace 已提交
1475 1476 1477
	if (!is_logical_dev_addr_mode(dev1->scsi3addr))
		if (dev1->queue_depth != dev2->queue_depth)
			return 1;
1478 1479 1480
	return 0;
}

1481 1482 1483
/* Find needle in haystack.  If exact match found, return DEVICE_SAME,
 * and return needle location in *index.  If scsi3addr matches, but not
 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
1484 1485 1486 1487
 * location in *index.
 * In the case of a minor device attribute change, such as RAID level, just
 * return DEVICE_UPDATED, along with the updated device's location in index.
 * If needle not found, return DEVICE_NOT_FOUND.
1488 1489 1490 1491 1492 1493 1494 1495 1496
 */
static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle,
	struct hpsa_scsi_dev_t *haystack[], int haystack_size,
	int *index)
{
	int i;
#define DEVICE_NOT_FOUND 0
#define DEVICE_CHANGED 1
#define DEVICE_SAME 2
1497
#define DEVICE_UPDATED 3
D
Don Brace 已提交
1498 1499 1500
	if (needle == NULL)
		return DEVICE_NOT_FOUND;

1501
	for (i = 0; i < haystack_size; i++) {
1502 1503
		if (haystack[i] == NULL) /* previously removed. */
			continue;
1504 1505
		if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) {
			*index = i;
1506 1507 1508
			if (device_is_the_same(needle, haystack[i])) {
				if (device_updated(needle, haystack[i]))
					return DEVICE_UPDATED;
1509
				return DEVICE_SAME;
1510
			} else {
1511 1512 1513
				/* Keep offline devices offline */
				if (needle->volume_offline)
					return DEVICE_NOT_FOUND;
1514
				return DEVICE_CHANGED;
1515
			}
1516 1517 1518 1519 1520 1521
		}
	}
	*index = -1;
	return DEVICE_NOT_FOUND;
}

1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568
static void hpsa_monitor_offline_device(struct ctlr_info *h,
					unsigned char scsi3addr[])
{
	struct offline_device_entry *device;
	unsigned long flags;

	/* Check to see if device is already on the list */
	spin_lock_irqsave(&h->offline_device_lock, flags);
	list_for_each_entry(device, &h->offline_device_list, offline_list) {
		if (memcmp(device->scsi3addr, scsi3addr,
			sizeof(device->scsi3addr)) == 0) {
			spin_unlock_irqrestore(&h->offline_device_lock, flags);
			return;
		}
	}
	spin_unlock_irqrestore(&h->offline_device_lock, flags);

	/* Device is not on the list, add it. */
	device = kmalloc(sizeof(*device), GFP_KERNEL);
	if (!device) {
		dev_warn(&h->pdev->dev, "out of memory in %s\n", __func__);
		return;
	}
	memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
	spin_lock_irqsave(&h->offline_device_lock, flags);
	list_add_tail(&device->offline_list, &h->offline_device_list);
	spin_unlock_irqrestore(&h->offline_device_lock, flags);
}

/* Print a message explaining various offline volume states */
static void hpsa_show_volume_status(struct ctlr_info *h,
	struct hpsa_scsi_dev_t *sd)
{
	if (sd->volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED)
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume status is not available through vital product data pages.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
	switch (sd->volume_offline) {
	case HPSA_LV_OK:
		break;
	case HPSA_LV_UNDERGOING_ERASE:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is undergoing background erase process.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
S
Scott Benesh 已提交
1569 1570 1571 1572 1573 1574
	case HPSA_LV_NOT_AVAILABLE:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is waiting for transforming volume.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
1575 1576
	case HPSA_LV_UNDERGOING_RPI:
		dev_info(&h->pdev->dev,
S
Scott Benesh 已提交
1577
			"C%d:B%d:T%d:L%d Volume is undergoing rapid parity init.\n",
1578 1579 1580 1581 1582
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
	case HPSA_LV_PENDING_RPI:
		dev_info(&h->pdev->dev,
S
Scott Benesh 已提交
1583 1584 1585
			"C%d:B%d:T%d:L%d Volume is queued for rapid parity initialization process.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631
		break;
	case HPSA_LV_ENCRYPTED_NO_KEY:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because key is not present.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
	case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is not encrypted and cannot be accessed because controller is in encryption-only mode.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
	case HPSA_LV_UNDERGOING_ENCRYPTION:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is undergoing encryption process.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
	case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is undergoing encryption re-keying process.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
	case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because controller does not have encryption enabled.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
	case HPSA_LV_PENDING_ENCRYPTION:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is pending migration to encrypted state, but process has not started.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
	case HPSA_LV_PENDING_ENCRYPTION_REKEYING:
		dev_info(&h->pdev->dev,
			"C%d:B%d:T%d:L%d Volume is encrypted and is pending encryption rekeying.\n",
			h->scsi_host->host_no,
			sd->bus, sd->target, sd->lun);
		break;
	}
}

1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654
/*
 * Figure the list of physical drive pointers for a logical drive with
 * raid offload configured.
 */
static void hpsa_figure_phys_disk_ptrs(struct ctlr_info *h,
				struct hpsa_scsi_dev_t *dev[], int ndevices,
				struct hpsa_scsi_dev_t *logical_drive)
{
	struct raid_map_data *map = &logical_drive->raid_map;
	struct raid_map_disk_data *dd = &map->data[0];
	int i, j;
	int total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
				le16_to_cpu(map->metadata_disks_per_row);
	int nraid_map_entries = le16_to_cpu(map->row_cnt) *
				le16_to_cpu(map->layout_map_count) *
				total_disks_per_row;
	int nphys_disk = le16_to_cpu(map->layout_map_count) *
				total_disks_per_row;
	int qdepth;

	if (nraid_map_entries > RAID_MAP_MAX_ENTRIES)
		nraid_map_entries = RAID_MAP_MAX_ENTRIES;

W
Webb Scales 已提交
1655 1656
	logical_drive->nphysical_disks = nraid_map_entries;

1657 1658 1659 1660 1661 1662
	qdepth = 0;
	for (i = 0; i < nraid_map_entries; i++) {
		logical_drive->phys_disk[i] = NULL;
		if (!logical_drive->offload_config)
			continue;
		for (j = 0; j < ndevices; j++) {
D
Don Brace 已提交
1663 1664
			if (dev[j] == NULL)
				continue;
1665 1666
			if (dev[j]->devtype != TYPE_DISK)
				continue;
D
Don Brace 已提交
1667 1668
			if (dev[j]->devtype != TYPE_ZBC)
				continue;
1669
			if (is_logical_device(dev[j]))
1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689
				continue;
			if (dev[j]->ioaccel_handle != dd[i].ioaccel_handle)
				continue;

			logical_drive->phys_disk[i] = dev[j];
			if (i < nphys_disk)
				qdepth = min(h->nr_cmds, qdepth +
				    logical_drive->phys_disk[i]->queue_depth);
			break;
		}

		/*
		 * This can happen if a physical drive is removed and
		 * the logical drive is degraded.  In that case, the RAID
		 * map data will refer to a physical disk which isn't actually
		 * present.  And in that case offload_enabled should already
		 * be 0, but we'll turn it off here just in case
		 */
		if (!logical_drive->phys_disk[i]) {
			logical_drive->offload_enabled = 0;
1690 1691
			logical_drive->offload_to_be_enabled = 0;
			logical_drive->queue_depth = 8;
1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709
		}
	}
	if (nraid_map_entries)
		/*
		 * This is correct for reads, too high for full stripe writes,
		 * way too high for partial stripe writes
		 */
		logical_drive->queue_depth = qdepth;
	else
		logical_drive->queue_depth = h->nr_cmds;
}

static void hpsa_update_log_drive_phys_drive_ptrs(struct ctlr_info *h,
				struct hpsa_scsi_dev_t *dev[], int ndevices)
{
	int i;

	for (i = 0; i < ndevices; i++) {
D
Don Brace 已提交
1710 1711
		if (dev[i] == NULL)
			continue;
1712 1713
		if (dev[i]->devtype != TYPE_DISK)
			continue;
D
Don Brace 已提交
1714 1715
		if (dev[i]->devtype != TYPE_ZBC)
			continue;
1716
		if (!is_logical_device(dev[i]))
1717
			continue;
1718 1719 1720 1721 1722 1723 1724 1725 1726 1727

		/*
		 * If offload is currently enabled, the RAID map and
		 * phys_disk[] assignment *better* not be changing
		 * and since it isn't changing, we do not need to
		 * update it.
		 */
		if (dev[i]->offload_enabled)
			continue;

1728 1729 1730 1731
		hpsa_figure_phys_disk_ptrs(h, dev, ndevices, dev[i]);
	}
}

1732 1733 1734 1735 1736 1737 1738
static int hpsa_add_device(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
{
	int rc = 0;

	if (!h->scsi_host)
		return 1;

K
Kevin Barnett 已提交
1739 1740
	if (is_logical_device(device)) /* RAID */
		rc = scsi_add_device(h->scsi_host, device->bus,
1741
					device->target, device->lun);
K
Kevin Barnett 已提交
1742 1743 1744
	else /* HBA */
		rc = hpsa_add_sas_device(h->sas_host, device);

1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755
	return rc;
}

static void hpsa_remove_device(struct ctlr_info *h,
			struct hpsa_scsi_dev_t *device)
{
	struct scsi_device *sdev = NULL;

	if (!h->scsi_host)
		return;

K
Kevin Barnett 已提交
1756 1757
	if (is_logical_device(device)) { /* RAID */
		sdev = scsi_device_lookup(h->scsi_host, device->bus,
1758
						device->target, device->lun);
K
Kevin Barnett 已提交
1759 1760 1761 1762 1763 1764 1765 1766 1767 1768
		if (sdev) {
			scsi_remove_device(sdev);
			scsi_device_put(sdev);
		} else {
			/*
			 * We don't expect to get here.  Future commands
			 * to this device will get a selection timeout as
			 * if the device were gone.
			 */
			hpsa_show_dev_msg(KERN_WARNING, h, device,
1769
					"didn't find device for removal.");
K
Kevin Barnett 已提交
1770 1771 1772
		}
	} else /* HBA */
		hpsa_remove_sas_device(device);
1773 1774
}

D
Don Brace 已提交
1775
static void adjust_hpsa_scsi_table(struct ctlr_info *h,
1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787
	struct hpsa_scsi_dev_t *sd[], int nsds)
{
	/* sd contains scsi3 addresses and devtypes, and inquiry
	 * data.  This function takes what's in sd to be the current
	 * reality and updates h->dev[] to reflect that reality.
	 */
	int i, entry, device_change, changes = 0;
	struct hpsa_scsi_dev_t *csd;
	unsigned long flags;
	struct hpsa_scsi_dev_t **added, **removed;
	int nadded, nremoved;

D
Don Brace 已提交
1788 1789 1790 1791 1792 1793 1794 1795
	/*
	 * A reset can cause a device status to change
	 * re-schedule the scan to see what happened.
	 */
	if (h->reset_in_progress) {
		h->drv_req_rescan = 1;
		return;
	}
1796

1797 1798
	added = kzalloc(sizeof(*added) * HPSA_MAX_DEVICES, GFP_KERNEL);
	removed = kzalloc(sizeof(*removed) * HPSA_MAX_DEVICES, GFP_KERNEL);
1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811

	if (!added || !removed) {
		dev_warn(&h->pdev->dev, "out of memory in "
			"adjust_hpsa_scsi_table\n");
		goto free_and_out;
	}

	spin_lock_irqsave(&h->devlock, flags);

	/* find any devices in h->dev[] that are not in
	 * sd[] and remove them from h->dev[], and for any
	 * devices which have changed, remove the old device
	 * info and add the new device info.
1812 1813
	 * If minor device attributes change, just update
	 * the existing device structure.
1814 1815 1816 1817 1818 1819 1820 1821 1822
	 */
	i = 0;
	nremoved = 0;
	nadded = 0;
	while (i < h->ndevices) {
		csd = h->dev[i];
		device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry);
		if (device_change == DEVICE_NOT_FOUND) {
			changes++;
D
Don Brace 已提交
1823
			hpsa_scsi_remove_entry(h, i, removed, &nremoved);
1824 1825 1826
			continue; /* remove ^^^, hence i not incremented */
		} else if (device_change == DEVICE_CHANGED) {
			changes++;
D
Don Brace 已提交
1827
			hpsa_scsi_replace_entry(h, i, sd[entry],
1828
				added, &nadded, removed, &nremoved);
1829 1830 1831 1832
			/* Set it to NULL to prevent it from being freed
			 * at the bottom of hpsa_update_scsi_devices()
			 */
			sd[entry] = NULL;
1833
		} else if (device_change == DEVICE_UPDATED) {
D
Don Brace 已提交
1834
			hpsa_scsi_update_entry(h, i, sd[entry]);
1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845
		}
		i++;
	}

	/* Now, make sure every device listed in sd[] is also
	 * listed in h->dev[], adding them if they aren't found
	 */

	for (i = 0; i < nsds; i++) {
		if (!sd[i]) /* if already added above. */
			continue;
1846 1847 1848 1849 1850 1851 1852 1853

		/* Don't add devices which are NOT READY, FORMAT IN PROGRESS
		 * as the SCSI mid-layer does not handle such devices well.
		 * It relentlessly loops sending TUR at 3Hz, then READ(10)
		 * at 160Hz, and prevents the system from coming up.
		 */
		if (sd[i]->volume_offline) {
			hpsa_show_volume_status(h, sd[i]);
1854
			hpsa_show_dev_msg(KERN_INFO, h, sd[i], "offline");
1855 1856 1857
			continue;
		}

1858 1859 1860 1861
		device_change = hpsa_scsi_find_entry(sd[i], h->dev,
					h->ndevices, &entry);
		if (device_change == DEVICE_NOT_FOUND) {
			changes++;
D
Don Brace 已提交
1862
			if (hpsa_scsi_add_entry(h, sd[i], added, &nadded) != 0)
1863 1864 1865 1866 1867 1868 1869 1870 1871 1872
				break;
			sd[i] = NULL; /* prevent from being freed later. */
		} else if (device_change == DEVICE_CHANGED) {
			/* should never happen... */
			changes++;
			dev_warn(&h->pdev->dev,
				"device unexpectedly changed.\n");
			/* but if it does happen, we just ignore that device */
		}
	}
1873 1874 1875 1876 1877
	hpsa_update_log_drive_phys_drive_ptrs(h, h->dev, h->ndevices);

	/* Now that h->dev[]->phys_disk[] is coherent, we can enable
	 * any logical drives that need it enabled.
	 */
D
Don Brace 已提交
1878 1879 1880
	for (i = 0; i < h->ndevices; i++) {
		if (h->dev[i] == NULL)
			continue;
1881
		h->dev[i]->offload_enabled = h->dev[i]->offload_to_be_enabled;
D
Don Brace 已提交
1882
	}
1883

1884 1885
	spin_unlock_irqrestore(&h->devlock, flags);

1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896
	/* Monitor devices which are in one of several NOT READY states to be
	 * brought online later. This must be done without holding h->devlock,
	 * so don't touch h->dev[]
	 */
	for (i = 0; i < nsds; i++) {
		if (!sd[i]) /* if already added above. */
			continue;
		if (sd[i]->volume_offline)
			hpsa_monitor_offline_device(h, sd[i]->scsi3addr);
	}

1897 1898 1899 1900
	/* Don't notify scsi mid layer of any changes the first time through
	 * (or if there are no changes) scsi_scan_host will do it later the
	 * first time through.
	 */
D
Don Brace 已提交
1901
	if (!changes)
1902 1903 1904 1905
		goto free_and_out;

	/* Notify scsi mid layer of any removed devices */
	for (i = 0; i < nremoved; i++) {
D
Don Brace 已提交
1906 1907
		if (removed[i] == NULL)
			continue;
1908 1909
		if (removed[i]->expose_device)
			hpsa_remove_device(h, removed[i]);
1910 1911 1912 1913 1914 1915
		kfree(removed[i]);
		removed[i] = NULL;
	}

	/* Notify scsi mid layer of any added devices */
	for (i = 0; i < nadded; i++) {
1916 1917
		int rc = 0;

D
Don Brace 已提交
1918 1919
		if (added[i] == NULL)
			continue;
1920
		if (!(added[i]->expose_device))
1921
			continue;
1922 1923
		rc = hpsa_add_device(h, added[i]);
		if (!rc)
1924
			continue;
1925 1926
		dev_warn(&h->pdev->dev,
			"addition failed %d, device not added.", rc);
1927 1928 1929 1930
		/* now we have to remove it from h->dev,
		 * since it didn't get added to scsi mid layer
		 */
		fixup_botched_add(h, added[i]);
D
Don Brace 已提交
1931
		h->drv_req_rescan = 1;
1932 1933 1934 1935 1936 1937 1938 1939
	}

free_and_out:
	kfree(added);
	kfree(removed);
}

/*
1940
 * Lookup bus/target/lun and return corresponding struct hpsa_scsi_dev_t *
1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964
 * Assume's h->devlock is held.
 */
static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h,
	int bus, int target, int lun)
{
	int i;
	struct hpsa_scsi_dev_t *sd;

	for (i = 0; i < h->ndevices; i++) {
		sd = h->dev[i];
		if (sd->bus == bus && sd->target == target && sd->lun == lun)
			return sd;
	}
	return NULL;
}

static int hpsa_slave_alloc(struct scsi_device *sdev)
{
	struct hpsa_scsi_dev_t *sd;
	unsigned long flags;
	struct ctlr_info *h;

	h = sdev_to_hba(sdev);
	spin_lock_irqsave(&h->devlock, flags);
K
Kevin Barnett 已提交
1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980
	if (sdev_channel(sdev) == HPSA_PHYSICAL_DEVICE_BUS) {
		struct scsi_target *starget;
		struct sas_rphy *rphy;

		starget = scsi_target(sdev);
		rphy = target_to_rphy(starget);
		sd = hpsa_find_device_by_sas_rphy(h, rphy);
		if (sd) {
			sd->target = sdev_id(sdev);
			sd->lun = sdev->lun;
		}
	} else
		sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev),
					sdev_id(sdev), sdev->lun);

	if (sd && sd->expose_device) {
1981
		atomic_set(&sd->ioaccel_cmds_out, 0);
K
Kevin Barnett 已提交
1982
		sdev->hostdata = sd;
1983 1984
	} else
		sdev->hostdata = NULL;
1985 1986 1987 1988
	spin_unlock_irqrestore(&h->devlock, flags);
	return 0;
}

1989 1990 1991 1992 1993 1994 1995
/* configure scsi device based on internal per-device structure */
static int hpsa_slave_configure(struct scsi_device *sdev)
{
	struct hpsa_scsi_dev_t *sd;
	int queue_depth;

	sd = sdev->hostdata;
1996
	sdev->no_uld_attach = !sd || !sd->expose_device;
1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008

	if (sd)
		queue_depth = sd->queue_depth != 0 ?
			sd->queue_depth : sdev->host->can_queue;
	else
		queue_depth = sdev->host->can_queue;

	scsi_change_queue_depth(sdev, queue_depth);

	return 0;
}

2009 2010
static void hpsa_slave_destroy(struct scsi_device *sdev)
{
2011
	/* nothing to do. */
2012 2013
}

2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053
static void hpsa_free_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
{
	int i;

	if (!h->ioaccel2_cmd_sg_list)
		return;
	for (i = 0; i < h->nr_cmds; i++) {
		kfree(h->ioaccel2_cmd_sg_list[i]);
		h->ioaccel2_cmd_sg_list[i] = NULL;
	}
	kfree(h->ioaccel2_cmd_sg_list);
	h->ioaccel2_cmd_sg_list = NULL;
}

static int hpsa_allocate_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
{
	int i;

	if (h->chainsize <= 0)
		return 0;

	h->ioaccel2_cmd_sg_list =
		kzalloc(sizeof(*h->ioaccel2_cmd_sg_list) * h->nr_cmds,
					GFP_KERNEL);
	if (!h->ioaccel2_cmd_sg_list)
		return -ENOMEM;
	for (i = 0; i < h->nr_cmds; i++) {
		h->ioaccel2_cmd_sg_list[i] =
			kmalloc(sizeof(*h->ioaccel2_cmd_sg_list[i]) *
					h->maxsgentries, GFP_KERNEL);
		if (!h->ioaccel2_cmd_sg_list[i])
			goto clean;
	}
	return 0;

clean:
	hpsa_free_ioaccel2_sg_chain_blocks(h);
	return -ENOMEM;
}

2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067
static void hpsa_free_sg_chain_blocks(struct ctlr_info *h)
{
	int i;

	if (!h->cmd_sg_list)
		return;
	for (i = 0; i < h->nr_cmds; i++) {
		kfree(h->cmd_sg_list[i]);
		h->cmd_sg_list[i] = NULL;
	}
	kfree(h->cmd_sg_list);
	h->cmd_sg_list = NULL;
}

R
Robert Elliott 已提交
2068
static int hpsa_alloc_sg_chain_blocks(struct ctlr_info *h)
2069 2070 2071 2072 2073 2074 2075 2076
{
	int i;

	if (h->chainsize <= 0)
		return 0;

	h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds,
				GFP_KERNEL);
2077 2078
	if (!h->cmd_sg_list) {
		dev_err(&h->pdev->dev, "Failed to allocate SG list\n");
2079
		return -ENOMEM;
2080
	}
2081 2082 2083
	for (i = 0; i < h->nr_cmds; i++) {
		h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) *
						h->chainsize, GFP_KERNEL);
2084 2085
		if (!h->cmd_sg_list[i]) {
			dev_err(&h->pdev->dev, "Failed to allocate cmd SG\n");
2086
			goto clean;
2087
		}
2088 2089 2090 2091 2092 2093 2094 2095
	}
	return 0;

clean:
	hpsa_free_sg_chain_blocks(h);
	return -ENOMEM;
}

2096 2097 2098 2099 2100 2101 2102 2103
static int hpsa_map_ioaccel2_sg_chain_block(struct ctlr_info *h,
	struct io_accel2_cmd *cp, struct CommandList *c)
{
	struct ioaccel2_sg_element *chain_block;
	u64 temp64;
	u32 chain_size;

	chain_block = h->ioaccel2_cmd_sg_list[c->cmdindex];
D
Don Brace 已提交
2104
	chain_size = le32_to_cpu(cp->sg[0].length);
2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124
	temp64 = pci_map_single(h->pdev, chain_block, chain_size,
				PCI_DMA_TODEVICE);
	if (dma_mapping_error(&h->pdev->dev, temp64)) {
		/* prevent subsequent unmapping */
		cp->sg->address = 0;
		return -1;
	}
	cp->sg->address = cpu_to_le64(temp64);
	return 0;
}

static void hpsa_unmap_ioaccel2_sg_chain_block(struct ctlr_info *h,
	struct io_accel2_cmd *cp)
{
	struct ioaccel2_sg_element *chain_sg;
	u64 temp64;
	u32 chain_size;

	chain_sg = cp->sg;
	temp64 = le64_to_cpu(chain_sg->address);
D
Don Brace 已提交
2125
	chain_size = le32_to_cpu(cp->sg[0].length);
2126 2127 2128
	pci_unmap_single(h->pdev, temp64, chain_size, PCI_DMA_TODEVICE);
}

2129
static int hpsa_map_sg_chain_block(struct ctlr_info *h,
2130 2131 2132 2133
	struct CommandList *c)
{
	struct SGDescriptor *chain_sg, *chain_block;
	u64 temp64;
2134
	u32 chain_len;
2135 2136 2137

	chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
	chain_block = h->cmd_sg_list[c->cmdindex];
2138 2139
	chain_sg->Ext = cpu_to_le32(HPSA_SG_CHAIN);
	chain_len = sizeof(*chain_sg) *
D
Don Brace 已提交
2140
		(le16_to_cpu(c->Header.SGTotal) - h->max_cmd_sg_entries);
2141 2142
	chain_sg->Len = cpu_to_le32(chain_len);
	temp64 = pci_map_single(h->pdev, chain_block, chain_len,
2143
				PCI_DMA_TODEVICE);
2144 2145
	if (dma_mapping_error(&h->pdev->dev, temp64)) {
		/* prevent subsequent unmapping */
2146
		chain_sg->Addr = cpu_to_le64(0);
2147 2148
		return -1;
	}
2149
	chain_sg->Addr = cpu_to_le64(temp64);
2150
	return 0;
2151 2152 2153 2154 2155 2156 2157
}

static void hpsa_unmap_sg_chain_block(struct ctlr_info *h,
	struct CommandList *c)
{
	struct SGDescriptor *chain_sg;

2158
	if (le16_to_cpu(c->Header.SGTotal) <= h->max_cmd_sg_entries)
2159 2160 2161
		return;

	chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
2162 2163
	pci_unmap_single(h->pdev, le64_to_cpu(chain_sg->Addr),
			le32_to_cpu(chain_sg->Len), PCI_DMA_TODEVICE);
2164 2165
}

2166 2167 2168 2169 2170 2171

/* Decode the various types of errors on ioaccel2 path.
 * Return 1 for any error that should generate a RAID path retry.
 * Return 0 for errors that don't require a RAID path retry.
 */
static int handle_ioaccel_mode2_error(struct ctlr_info *h,
2172 2173 2174 2175 2176
					struct CommandList *c,
					struct scsi_cmnd *cmd,
					struct io_accel2_cmd *c2)
{
	int data_len;
2177
	int retry = 0;
2178
	u32 ioaccel2_resid = 0;
2179 2180 2181 2182 2183 2184 2185

	switch (c2->error_data.serv_response) {
	case IOACCEL2_SERV_RESPONSE_COMPLETE:
		switch (c2->error_data.status) {
		case IOACCEL2_STATUS_SR_TASK_COMP_GOOD:
			break;
		case IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND:
2186
			cmd->result |= SAM_STAT_CHECK_CONDITION;
2187
			if (c2->error_data.data_present !=
2188 2189 2190
					IOACCEL2_SENSE_DATA_PRESENT) {
				memset(cmd->sense_buffer, 0,
					SCSI_SENSE_BUFFERSIZE);
2191
				break;
2192
			}
2193 2194 2195 2196 2197 2198 2199 2200 2201
			/* copy the sense data */
			data_len = c2->error_data.sense_data_len;
			if (data_len > SCSI_SENSE_BUFFERSIZE)
				data_len = SCSI_SENSE_BUFFERSIZE;
			if (data_len > sizeof(c2->error_data.sense_data_buff))
				data_len =
					sizeof(c2->error_data.sense_data_buff);
			memcpy(cmd->sense_buffer,
				c2->error_data.sense_data_buff, data_len);
2202
			retry = 1;
2203 2204
			break;
		case IOACCEL2_STATUS_SR_TASK_COMP_BUSY:
2205
			retry = 1;
2206 2207
			break;
		case IOACCEL2_STATUS_SR_TASK_COMP_RES_CON:
2208
			retry = 1;
2209 2210
			break;
		case IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL:
2211
			retry = 1;
2212 2213
			break;
		case IOACCEL2_STATUS_SR_TASK_COMP_ABORTED:
2214
			retry = 1;
2215 2216
			break;
		default:
2217
			retry = 1;
2218 2219 2220 2221
			break;
		}
		break;
	case IOACCEL2_SERV_RESPONSE_FAILURE:
2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243
		switch (c2->error_data.status) {
		case IOACCEL2_STATUS_SR_IO_ERROR:
		case IOACCEL2_STATUS_SR_IO_ABORTED:
		case IOACCEL2_STATUS_SR_OVERRUN:
			retry = 1;
			break;
		case IOACCEL2_STATUS_SR_UNDERRUN:
			cmd->result = (DID_OK << 16);		/* host byte */
			cmd->result |= (COMMAND_COMPLETE << 8);	/* msg byte */
			ioaccel2_resid = get_unaligned_le32(
						&c2->error_data.resid_cnt[0]);
			scsi_set_resid(cmd, ioaccel2_resid);
			break;
		case IOACCEL2_STATUS_SR_NO_PATH_TO_DEVICE:
		case IOACCEL2_STATUS_SR_INVALID_DEVICE:
		case IOACCEL2_STATUS_SR_IOACCEL_DISABLED:
			/* We will get an event from ctlr to trigger rescan */
			retry = 1;
			break;
		default:
			retry = 1;
		}
2244 2245 2246 2247 2248 2249
		break;
	case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
		break;
	case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
		break;
	case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
2250
		retry = 1;
2251 2252 2253 2254
		break;
	case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
		break;
	default:
2255
		retry = 1;
2256 2257
		break;
	}
2258 2259

	return retry;	/* retry on raid path? */
2260 2261
}

2262 2263 2264
static void hpsa_cmd_resolve_events(struct ctlr_info *h,
		struct CommandList *c)
{
W
Webb Scales 已提交
2265 2266
	bool do_wake = false;

2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277
	/*
	 * Prevent the following race in the abort handler:
	 *
	 * 1. LLD is requested to abort a SCSI command
	 * 2. The SCSI command completes
	 * 3. The struct CommandList associated with step 2 is made available
	 * 4. New I/O request to LLD to another LUN re-uses struct CommandList
	 * 5. Abort handler follows scsi_cmnd->host_scribble and
	 *    finds struct CommandList and tries to aborts it
	 * Now we have aborted the wrong command.
	 *
W
Webb Scales 已提交
2278 2279
	 * Reset c->scsi_cmd here so that the abort or reset handler will know
	 * this command has completed.  Then, check to see if the handler is
2280 2281 2282
	 * waiting for this command, and, if so, wake it.
	 */
	c->scsi_cmd = SCSI_CMD_IDLE;
W
Webb Scales 已提交
2283
	mb();	/* Declare command idle before checking for pending events. */
2284
	if (c->abort_pending) {
W
Webb Scales 已提交
2285
		do_wake = true;
2286 2287
		c->abort_pending = false;
	}
W
Webb Scales 已提交
2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306
	if (c->reset_pending) {
		unsigned long flags;
		struct hpsa_scsi_dev_t *dev;

		/*
		 * There appears to be a reset pending; lock the lock and
		 * reconfirm.  If so, then decrement the count of outstanding
		 * commands and wake the reset command if this is the last one.
		 */
		spin_lock_irqsave(&h->lock, flags);
		dev = c->reset_pending;		/* Re-fetch under the lock. */
		if (dev && atomic_dec_and_test(&dev->reset_cmds_out))
			do_wake = true;
		c->reset_pending = NULL;
		spin_unlock_irqrestore(&h->lock, flags);
	}

	if (do_wake)
		wake_up_all(&h->event_sync_wait_queue);
2307 2308
}

2309 2310 2311 2312 2313 2314 2315
static void hpsa_cmd_resolve_and_free(struct ctlr_info *h,
				      struct CommandList *c)
{
	hpsa_cmd_resolve_events(h, c);
	cmd_tagged_free(h, c);
}

2316 2317 2318
static void hpsa_cmd_free_and_done(struct ctlr_info *h,
		struct CommandList *c, struct scsi_cmnd *cmd)
{
2319
	hpsa_cmd_resolve_and_free(h, c);
2320 2321 2322 2323 2324 2325 2326 2327 2328
	cmd->scsi_done(cmd);
}

static void hpsa_retry_cmd(struct ctlr_info *h, struct CommandList *c)
{
	INIT_WORK(&c->work, hpsa_command_resubmit_worker);
	queue_work_on(raw_smp_processor_id(), h->resubmit_wq, &c->work);
}

2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339
static void hpsa_set_scsi_cmd_aborted(struct scsi_cmnd *cmd)
{
	cmd->result = DID_ABORT << 16;
}

static void hpsa_cmd_abort_and_free(struct ctlr_info *h, struct CommandList *c,
				    struct scsi_cmnd *cmd)
{
	hpsa_set_scsi_cmd_aborted(cmd);
	dev_warn(&h->pdev->dev, "CDB %16phN was aborted with status 0x%x\n",
			 c->Request.CDB, c->err_info->ScsiStatus);
2340
	hpsa_cmd_resolve_and_free(h, c);
2341 2342
}

2343 2344 2345 2346 2347 2348 2349 2350
static void process_ioaccel2_completion(struct ctlr_info *h,
		struct CommandList *c, struct scsi_cmnd *cmd,
		struct hpsa_scsi_dev_t *dev)
{
	struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];

	/* check for good status */
	if (likely(c2->error_data.serv_response == 0 &&
2351 2352
			c2->error_data.status == 0))
		return hpsa_cmd_free_and_done(h, c, cmd);
2353

2354 2355
	/*
	 * Any RAID offload error results in retry which will use
2356 2357 2358
	 * the normal I/O path so the controller can handle whatever's
	 * wrong.
	 */
2359
	if (is_logical_device(dev) &&
2360 2361
		c2->error_data.serv_response ==
			IOACCEL2_SERV_RESPONSE_FAILURE) {
2362
		if (c2->error_data.status ==
2363
			IOACCEL2_STATUS_SR_IOACCEL_DISABLED) {
2364
			dev->offload_enabled = 0;
2365 2366
			dev->offload_to_be_enabled = 0;
		}
2367 2368

		return hpsa_retry_cmd(h, c);
2369
	}
2370 2371

	if (handle_ioaccel_mode2_error(h, c, cmd, c2))
2372
		return hpsa_retry_cmd(h, c);
2373

2374
	return hpsa_cmd_free_and_done(h, c, cmd);
2375 2376
}

2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404
/* Returns 0 on success, < 0 otherwise. */
static int hpsa_evaluate_tmf_status(struct ctlr_info *h,
					struct CommandList *cp)
{
	u8 tmf_status = cp->err_info->ScsiStatus;

	switch (tmf_status) {
	case CISS_TMF_COMPLETE:
		/*
		 * CISS_TMF_COMPLETE never happens, instead,
		 * ei->CommandStatus == 0 for this case.
		 */
	case CISS_TMF_SUCCESS:
		return 0;
	case CISS_TMF_INVALID_FRAME:
	case CISS_TMF_NOT_SUPPORTED:
	case CISS_TMF_FAILED:
	case CISS_TMF_WRONG_LUN:
	case CISS_TMF_OVERLAPPED_TAG:
		break;
	default:
		dev_warn(&h->pdev->dev, "Unknown TMF status: 0x%02x\n",
				tmf_status);
		break;
	}
	return -tmf_status;
}

2405
static void complete_scsi_command(struct CommandList *cp)
2406 2407 2408 2409
{
	struct scsi_cmnd *cmd;
	struct ctlr_info *h;
	struct ErrorInfo *ei;
2410
	struct hpsa_scsi_dev_t *dev;
2411
	struct io_accel2_cmd *c2;
2412

2413 2414 2415
	u8 sense_key;
	u8 asc;      /* additional sense code */
	u8 ascq;     /* additional sense code qualifier */
2416
	unsigned long sense_data_size;
2417 2418

	ei = cp->err_info;
2419
	cmd = cp->scsi_cmd;
2420
	h = cp->h;
2421
	dev = cmd->device->hostdata;
2422
	c2 = &h->ioaccel2_cmd_pool[cp->cmdindex];
2423 2424

	scsi_dma_unmap(cmd); /* undo the DMA mappings */
2425
	if ((cp->cmd_type == CMD_SCSI) &&
D
Don Brace 已提交
2426
		(le16_to_cpu(cp->Header.SGTotal) > h->max_cmd_sg_entries))
2427
		hpsa_unmap_sg_chain_block(h, cp);
2428

2429 2430 2431 2432
	if ((cp->cmd_type == CMD_IOACCEL2) &&
		(c2->sg[0].chain_indicator == IOACCEL2_CHAIN))
		hpsa_unmap_ioaccel2_sg_chain_block(h, c2);

2433 2434
	cmd->result = (DID_OK << 16); 		/* host byte */
	cmd->result |= (COMMAND_COMPLETE << 8);	/* msg byte */
2435

2436 2437 2438
	if (cp->cmd_type == CMD_IOACCEL2 || cp->cmd_type == CMD_IOACCEL1)
		atomic_dec(&cp->phys_disk->ioaccel_cmds_out);

2439 2440 2441 2442 2443 2444 2445 2446
	/*
	 * We check for lockup status here as it may be set for
	 * CMD_SCSI, CMD_IOACCEL1 and CMD_IOACCEL2 commands by
	 * fail_all_oustanding_cmds()
	 */
	if (unlikely(ei->CommandStatus == CMD_CTLR_LOCKUP)) {
		/* DID_NO_CONNECT will prevent a retry */
		cmd->result = DID_NO_CONNECT << 16;
2447
		return hpsa_cmd_free_and_done(h, cp, cmd);
2448 2449
	}

W
Webb Scales 已提交
2450 2451 2452 2453 2454 2455 2456
	if ((unlikely(hpsa_is_pending_event(cp)))) {
		if (cp->reset_pending)
			return hpsa_cmd_resolve_and_free(h, cp);
		if (cp->abort_pending)
			return hpsa_cmd_abort_and_free(h, cp, cmd);
	}

2457 2458 2459
	if (cp->cmd_type == CMD_IOACCEL2)
		return process_ioaccel2_completion(h, cp, cmd, dev);

2460
	scsi_set_resid(cmd, ei->ResidualCnt);
2461 2462
	if (ei->CommandStatus == 0)
		return hpsa_cmd_free_and_done(h, cp, cmd);
2463

2464 2465 2466 2467 2468
	/* For I/O accelerator commands, copy over some fields to the normal
	 * CISS header used below for error handling.
	 */
	if (cp->cmd_type == CMD_IOACCEL1) {
		struct io_accel1_cmd *c = &h->ioaccel_cmd_pool[cp->cmdindex];
D
Don Brace 已提交
2469 2470 2471 2472
		cp->Header.SGList = scsi_sg_count(cmd);
		cp->Header.SGTotal = cpu_to_le16(cp->Header.SGList);
		cp->Request.CDBLen = le16_to_cpu(c->io_flags) &
			IOACCEL1_IOFLAGS_CDBLEN_MASK;
2473
		cp->Header.tag = c->tag;
2474 2475
		memcpy(cp->Header.LUN.LunAddrBytes, c->CISS_LUN, 8);
		memcpy(cp->Request.CDB, c->CDB, cp->Request.CDBLen);
2476 2477 2478 2479 2480

		/* Any RAID offload error results in retry which will use
		 * the normal I/O path so the controller can handle whatever's
		 * wrong.
		 */
2481
		if (is_logical_device(dev)) {
2482 2483
			if (ei->CommandStatus == CMD_IOACCEL_DISABLED)
				dev->offload_enabled = 0;
W
Webb Scales 已提交
2484
			return hpsa_retry_cmd(h, cp);
2485
		}
2486 2487
	}

2488 2489 2490 2491
	/* an error has occurred */
	switch (ei->CommandStatus) {

	case CMD_TARGET_STATUS:
2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503
		cmd->result |= ei->ScsiStatus;
		/* copy the sense data */
		if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo))
			sense_data_size = SCSI_SENSE_BUFFERSIZE;
		else
			sense_data_size = sizeof(ei->SenseInfo);
		if (ei->SenseLen < sense_data_size)
			sense_data_size = ei->SenseLen;
		memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size);
		if (ei->ScsiStatus)
			decode_sense_data(ei->SenseInfo, sense_data_size,
				&sense_key, &asc, &ascq);
2504
		if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
2505
			if (sense_key == ABORTED_COMMAND) {
2506
				cmd->result |= DID_SOFT_ERROR << 16;
2507 2508
				break;
			}
2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543
			break;
		}
		/* Problem was not a check condition
		 * Pass it up to the upper layers...
		 */
		if (ei->ScsiStatus) {
			dev_warn(&h->pdev->dev, "cp %p has status 0x%x "
				"Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
				"Returning result: 0x%x\n",
				cp, ei->ScsiStatus,
				sense_key, asc, ascq,
				cmd->result);
		} else {  /* scsi status is zero??? How??? */
			dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. "
				"Returning no connection.\n", cp),

			/* Ordinarily, this case should never happen,
			 * but there is a bug in some released firmware
			 * revisions that allows it to happen if, for
			 * example, a 4100 backplane loses power and
			 * the tape drive is in it.  We assume that
			 * it's a fatal error of some kind because we
			 * can't show that it wasn't. We will make it
			 * look like selection timeout since that is
			 * the most common reason for this to occur,
			 * and it's severe enough.
			 */

			cmd->result = DID_NO_CONNECT << 16;
		}
		break;

	case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
		break;
	case CMD_DATA_OVERRUN:
2544 2545
		dev_warn(&h->pdev->dev,
			"CDB %16phN data overrun\n", cp->Request.CDB);
2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559
		break;
	case CMD_INVALID: {
		/* print_bytes(cp, sizeof(*cp), 1, 0);
		print_cmd(cp); */
		/* We get CMD_INVALID if you address a non-existent device
		 * instead of a selection timeout (no response).  You will
		 * see this if you yank out a drive, then try to access it.
		 * This is kind of a shame because it means that any other
		 * CMD_INVALID (e.g. driver bug) will get interpreted as a
		 * missing target. */
		cmd->result = DID_NO_CONNECT << 16;
	}
		break;
	case CMD_PROTOCOL_ERR:
2560
		cmd->result = DID_ERROR << 16;
2561 2562
		dev_warn(&h->pdev->dev, "CDB %16phN : protocol error\n",
				cp->Request.CDB);
2563 2564 2565
		break;
	case CMD_HARDWARE_ERR:
		cmd->result = DID_ERROR << 16;
2566 2567
		dev_warn(&h->pdev->dev, "CDB %16phN : hardware error\n",
			cp->Request.CDB);
2568 2569 2570
		break;
	case CMD_CONNECTION_LOST:
		cmd->result = DID_ERROR << 16;
2571 2572
		dev_warn(&h->pdev->dev, "CDB %16phN : connection lost\n",
			cp->Request.CDB);
2573 2574
		break;
	case CMD_ABORTED:
2575 2576
		/* Return now to avoid calling scsi_done(). */
		return hpsa_cmd_abort_and_free(h, cp, cmd);
2577 2578
	case CMD_ABORT_FAILED:
		cmd->result = DID_ERROR << 16;
2579 2580
		dev_warn(&h->pdev->dev, "CDB %16phN : abort failed\n",
			cp->Request.CDB);
2581 2582
		break;
	case CMD_UNSOLICITED_ABORT:
2583
		cmd->result = DID_SOFT_ERROR << 16; /* retry the command */
2584 2585
		dev_warn(&h->pdev->dev, "CDB %16phN : unsolicited abort\n",
			cp->Request.CDB);
2586 2587 2588
		break;
	case CMD_TIMEOUT:
		cmd->result = DID_TIME_OUT << 16;
2589 2590
		dev_warn(&h->pdev->dev, "CDB %16phN timed out\n",
			cp->Request.CDB);
2591
		break;
2592 2593 2594 2595
	case CMD_UNABORTABLE:
		cmd->result = DID_ERROR << 16;
		dev_warn(&h->pdev->dev, "Command unabortable\n");
		break;
2596 2597 2598 2599
	case CMD_TMF_STATUS:
		if (hpsa_evaluate_tmf_status(h, cp)) /* TMF failed? */
			cmd->result = DID_ERROR << 16;
		break;
2600 2601 2602 2603 2604 2605 2606 2607
	case CMD_IOACCEL_DISABLED:
		/* This only handles the direct pass-through case since RAID
		 * offload is handled above.  Just attempt a retry.
		 */
		cmd->result = DID_SOFT_ERROR << 16;
		dev_warn(&h->pdev->dev,
				"cp %p had HP SSD Smart Path error\n", cp);
		break;
2608 2609 2610 2611 2612
	default:
		cmd->result = DID_ERROR << 16;
		dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n",
				cp, ei->CommandStatus);
	}
2613 2614

	return hpsa_cmd_free_and_done(h, cp, cmd);
2615 2616 2617 2618 2619 2620 2621
}

static void hpsa_pci_unmap(struct pci_dev *pdev,
	struct CommandList *c, int sg_used, int data_direction)
{
	int i;

2622 2623 2624 2625
	for (i = 0; i < sg_used; i++)
		pci_unmap_single(pdev, (dma_addr_t) le64_to_cpu(c->SG[i].Addr),
				le32_to_cpu(c->SG[i].Len),
				data_direction);
2626 2627
}

2628
static int hpsa_map_one(struct pci_dev *pdev,
2629 2630 2631 2632 2633
		struct CommandList *cp,
		unsigned char *buf,
		size_t buflen,
		int data_direction)
{
2634
	u64 addr64;
2635 2636 2637

	if (buflen == 0 || data_direction == PCI_DMA_NONE) {
		cp->Header.SGList = 0;
2638
		cp->Header.SGTotal = cpu_to_le16(0);
2639
		return 0;
2640 2641
	}

2642
	addr64 = pci_map_single(pdev, buf, buflen, data_direction);
2643
	if (dma_mapping_error(&pdev->dev, addr64)) {
2644
		/* Prevent subsequent unmap of something never mapped */
2645
		cp->Header.SGList = 0;
2646
		cp->Header.SGTotal = cpu_to_le16(0);
2647
		return -1;
2648
	}
2649 2650 2651 2652 2653
	cp->SG[0].Addr = cpu_to_le64(addr64);
	cp->SG[0].Len = cpu_to_le32(buflen);
	cp->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* we are not chaining */
	cp->Header.SGList = 1;   /* no. SGs contig in this cmd */
	cp->Header.SGTotal = cpu_to_le16(1); /* total sgs in cmd list */
2654
	return 0;
2655 2656
}

2657 2658 2659 2660
#define NO_TIMEOUT ((unsigned long) -1)
#define DEFAULT_TIMEOUT 30000 /* milliseconds */
static int hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h,
	struct CommandList *c, int reply_queue, unsigned long timeout_msecs)
2661 2662 2663 2664
{
	DECLARE_COMPLETION_ONSTACK(wait);

	c->waiting = &wait;
2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686
	__enqueue_cmd_and_start_io(h, c, reply_queue);
	if (timeout_msecs == NO_TIMEOUT) {
		/* TODO: get rid of this no-timeout thing */
		wait_for_completion_io(&wait);
		return IO_OK;
	}
	if (!wait_for_completion_io_timeout(&wait,
					msecs_to_jiffies(timeout_msecs))) {
		dev_warn(&h->pdev->dev, "Command timed out.\n");
		return -ETIMEDOUT;
	}
	return IO_OK;
}

static int hpsa_scsi_do_simple_cmd(struct ctlr_info *h, struct CommandList *c,
				   int reply_queue, unsigned long timeout_msecs)
{
	if (unlikely(lockup_detected(h))) {
		c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
		return IO_OK;
	}
	return hpsa_scsi_do_simple_cmd_core(h, c, reply_queue, timeout_msecs);
2687 2688
}

2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700
static u32 lockup_detected(struct ctlr_info *h)
{
	int cpu;
	u32 rc, *lockup_detected;

	cpu = get_cpu();
	lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
	rc = *lockup_detected;
	put_cpu();
	return rc;
}

2701
#define MAX_DRIVER_CMD_RETRIES 25
2702 2703
static int hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
	struct CommandList *c, int data_direction, unsigned long timeout_msecs)
2704
{
2705
	int backoff_time = 10, retry_count = 0;
2706
	int rc;
2707 2708

	do {
2709
		memset(c->err_info, 0, sizeof(*c->err_info));
2710 2711 2712 2713
		rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
						  timeout_msecs);
		if (rc)
			break;
2714
		retry_count++;
2715 2716 2717 2718 2719
		if (retry_count > 3) {
			msleep(backoff_time);
			if (backoff_time < 1000)
				backoff_time *= 2;
		}
2720
	} while ((check_for_unit_attention(h, c) ||
2721 2722
			check_for_busy(h, c)) &&
			retry_count <= MAX_DRIVER_CMD_RETRIES);
2723
	hpsa_pci_unmap(h->pdev, c, 1, data_direction);
2724 2725 2726
	if (retry_count > MAX_DRIVER_CMD_RETRIES)
		rc = -EIO;
	return rc;
2727 2728
}

2729 2730
static void hpsa_print_cmd(struct ctlr_info *h, char *txt,
				struct CommandList *c)
2731
{
2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748
	const u8 *cdb = c->Request.CDB;
	const u8 *lun = c->Header.LUN.LunAddrBytes;

	dev_warn(&h->pdev->dev, "%s: LUN:%02x%02x%02x%02x%02x%02x%02x%02x"
	" CDB:%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
		txt, lun[0], lun[1], lun[2], lun[3],
		lun[4], lun[5], lun[6], lun[7],
		cdb[0], cdb[1], cdb[2], cdb[3],
		cdb[4], cdb[5], cdb[6], cdb[7],
		cdb[8], cdb[9], cdb[10], cdb[11],
		cdb[12], cdb[13], cdb[14], cdb[15]);
}

static void hpsa_scsi_interpret_error(struct ctlr_info *h,
			struct CommandList *cp)
{
	const struct ErrorInfo *ei = cp->err_info;
2749
	struct device *d = &cp->h->pdev->dev;
2750 2751
	u8 sense_key, asc, ascq;
	int sense_len;
2752 2753 2754

	switch (ei->CommandStatus) {
	case CMD_TARGET_STATUS:
2755 2756 2757 2758 2759 2760
		if (ei->SenseLen > sizeof(ei->SenseInfo))
			sense_len = sizeof(ei->SenseInfo);
		else
			sense_len = ei->SenseLen;
		decode_sense_data(ei->SenseInfo, sense_len,
					&sense_key, &asc, &ascq);
2761 2762
		hpsa_print_cmd(h, "SCSI status", cp);
		if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION)
2763 2764
			dev_warn(d, "SCSI Status = 02, Sense key = 0x%02x, ASC = 0x%02x, ASCQ = 0x%02x\n",
				sense_key, asc, ascq);
2765
		else
2766
			dev_warn(d, "SCSI Status = 0x%02x\n", ei->ScsiStatus);
2767 2768 2769 2770 2771 2772 2773 2774 2775
		if (ei->ScsiStatus == 0)
			dev_warn(d, "SCSI status is abnormally zero.  "
			"(probably indicates selection timeout "
			"reported incorrectly due to a known "
			"firmware bug, circa July, 2001.)\n");
		break;
	case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
		break;
	case CMD_DATA_OVERRUN:
2776
		hpsa_print_cmd(h, "overrun condition", cp);
2777 2778 2779 2780 2781
		break;
	case CMD_INVALID: {
		/* controller unfortunately reports SCSI passthru's
		 * to non-existent targets as invalid commands.
		 */
2782 2783
		hpsa_print_cmd(h, "invalid command", cp);
		dev_warn(d, "probably means device no longer present\n");
2784 2785 2786
		}
		break;
	case CMD_PROTOCOL_ERR:
2787
		hpsa_print_cmd(h, "protocol error", cp);
2788 2789
		break;
	case CMD_HARDWARE_ERR:
2790
		hpsa_print_cmd(h, "hardware error", cp);
2791 2792
		break;
	case CMD_CONNECTION_LOST:
2793
		hpsa_print_cmd(h, "connection lost", cp);
2794 2795
		break;
	case CMD_ABORTED:
2796
		hpsa_print_cmd(h, "aborted", cp);
2797 2798
		break;
	case CMD_ABORT_FAILED:
2799
		hpsa_print_cmd(h, "abort failed", cp);
2800 2801
		break;
	case CMD_UNSOLICITED_ABORT:
2802
		hpsa_print_cmd(h, "unsolicited abort", cp);
2803 2804
		break;
	case CMD_TIMEOUT:
2805
		hpsa_print_cmd(h, "timed out", cp);
2806
		break;
2807
	case CMD_UNABORTABLE:
2808
		hpsa_print_cmd(h, "unabortable", cp);
2809
		break;
2810 2811 2812
	case CMD_CTLR_LOCKUP:
		hpsa_print_cmd(h, "controller lockup detected", cp);
		break;
2813
	default:
2814 2815
		hpsa_print_cmd(h, "unknown status", cp);
		dev_warn(d, "Unknown command status %x\n",
2816 2817 2818 2819 2820
				ei->CommandStatus);
	}
}

static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
2821
			u16 page, unsigned char *buf,
2822 2823 2824 2825 2826 2827
			unsigned char bufsize)
{
	int rc = IO_OK;
	struct CommandList *c;
	struct ErrorInfo *ei;

2828
	c = cmd_alloc(h);
2829

2830 2831 2832 2833 2834
	if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize,
			page, scsi3addr, TYPE_CMD)) {
		rc = -1;
		goto out;
	}
2835
	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
2836
					PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
2837 2838
	if (rc)
		goto out;
2839 2840
	ei = c->err_info;
	if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
2841
		hpsa_scsi_interpret_error(h, c);
2842 2843
		rc = -1;
	}
2844
out:
2845
	cmd_free(h, c);
2846 2847 2848
	return rc;
}

2849
static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr,
2850
	u8 reset_type, int reply_queue)
2851 2852 2853 2854 2855
{
	int rc = IO_OK;
	struct CommandList *c;
	struct ErrorInfo *ei;

2856
	c = cmd_alloc(h);
2857 2858


2859
	/* fill_cmd can't fail here, no data buffer to map. */
S
Scott Teel 已提交
2860
	(void) fill_cmd(c, reset_type, h, NULL, 0, 0,
2861
			scsi3addr, TYPE_MSG);
2862
	rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, DEFAULT_TIMEOUT);
2863 2864 2865 2866
	if (rc) {
		dev_warn(&h->pdev->dev, "Failed to send reset command\n");
		goto out;
	}
2867 2868 2869 2870
	/* no unmap needed here because no data xfer. */

	ei = c->err_info;
	if (ei->CommandStatus != 0) {
2871
		hpsa_scsi_interpret_error(h, c);
2872 2873
		rc = -1;
	}
2874
out:
2875
	cmd_free(h, c);
2876 2877 2878
	return rc;
}

W
Webb Scales 已提交
2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983
static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c,
			       struct hpsa_scsi_dev_t *dev,
			       unsigned char *scsi3addr)
{
	int i;
	bool match = false;
	struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
	struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;

	if (hpsa_is_cmd_idle(c))
		return false;

	switch (c->cmd_type) {
	case CMD_SCSI:
	case CMD_IOCTL_PEND:
		match = !memcmp(scsi3addr, &c->Header.LUN.LunAddrBytes,
				sizeof(c->Header.LUN.LunAddrBytes));
		break;

	case CMD_IOACCEL1:
	case CMD_IOACCEL2:
		if (c->phys_disk == dev) {
			/* HBA mode match */
			match = true;
		} else {
			/* Possible RAID mode -- check each phys dev. */
			/* FIXME:  Do we need to take out a lock here?  If
			 * so, we could just call hpsa_get_pdisk_of_ioaccel2()
			 * instead. */
			for (i = 0; i < dev->nphysical_disks && !match; i++) {
				/* FIXME: an alternate test might be
				 *
				 * match = dev->phys_disk[i]->ioaccel_handle
				 *              == c2->scsi_nexus;      */
				match = dev->phys_disk[i] == c->phys_disk;
			}
		}
		break;

	case IOACCEL2_TMF:
		for (i = 0; i < dev->nphysical_disks && !match; i++) {
			match = dev->phys_disk[i]->ioaccel_handle ==
					le32_to_cpu(ac->it_nexus);
		}
		break;

	case 0:		/* The command is in the middle of being initialized. */
		match = false;
		break;

	default:
		dev_err(&h->pdev->dev, "unexpected cmd_type: %d\n",
			c->cmd_type);
		BUG();
	}

	return match;
}

static int hpsa_do_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev,
	unsigned char *scsi3addr, u8 reset_type, int reply_queue)
{
	int i;
	int rc = 0;

	/* We can really only handle one reset at a time */
	if (mutex_lock_interruptible(&h->reset_mutex) == -EINTR) {
		dev_warn(&h->pdev->dev, "concurrent reset wait interrupted.\n");
		return -EINTR;
	}

	BUG_ON(atomic_read(&dev->reset_cmds_out) != 0);

	for (i = 0; i < h->nr_cmds; i++) {
		struct CommandList *c = h->cmd_pool + i;
		int refcount = atomic_inc_return(&c->refcount);

		if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev, scsi3addr)) {
			unsigned long flags;

			/*
			 * Mark the target command as having a reset pending,
			 * then lock a lock so that the command cannot complete
			 * while we're considering it.  If the command is not
			 * idle then count it; otherwise revoke the event.
			 */
			c->reset_pending = dev;
			spin_lock_irqsave(&h->lock, flags);	/* Implied MB */
			if (!hpsa_is_cmd_idle(c))
				atomic_inc(&dev->reset_cmds_out);
			else
				c->reset_pending = NULL;
			spin_unlock_irqrestore(&h->lock, flags);
		}

		cmd_free(h, c);
	}

	rc = hpsa_send_reset(h, scsi3addr, reset_type, reply_queue);
	if (!rc)
		wait_event(h->event_sync_wait_queue,
			atomic_read(&dev->reset_cmds_out) == 0 ||
			lockup_detected(h));

	if (unlikely(lockup_detected(h))) {
D
Don Brace 已提交
2984 2985 2986 2987
		dev_warn(&h->pdev->dev,
			 "Controller lockup detected during reset wait\n");
		rc = -ENODEV;
	}
W
Webb Scales 已提交
2988 2989 2990 2991 2992 2993 2994 2995

	if (unlikely(rc))
		atomic_set(&dev->reset_cmds_out, 0);

	mutex_unlock(&h->reset_mutex);
	return rc;
}

2996 2997 2998 2999 3000 3001 3002 3003 3004 3005
static void hpsa_get_raid_level(struct ctlr_info *h,
	unsigned char *scsi3addr, unsigned char *raid_level)
{
	int rc;
	unsigned char *buf;

	*raid_level = RAID_UNKNOWN;
	buf = kzalloc(64, GFP_KERNEL);
	if (!buf)
		return;
3006
	rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 0xC1, buf, 64);
3007 3008 3009 3010 3011 3012 3013 3014
	if (rc == 0)
		*raid_level = buf[8];
	if (*raid_level > RAID_UNKNOWN)
		*raid_level = RAID_UNKNOWN;
	kfree(buf);
	return;
}

3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026
#define HPSA_MAP_DEBUG
#ifdef HPSA_MAP_DEBUG
static void hpsa_debug_map_buff(struct ctlr_info *h, int rc,
				struct raid_map_data *map_buff)
{
	struct raid_map_disk_data *dd = &map_buff->data[0];
	int map, row, col;
	u16 map_cnt, row_cnt, disks_per_row;

	if (rc != 0)
		return;

3027 3028 3029 3030
	/* Show details only if debugging has been activated. */
	if (h->raid_offload_debug < 2)
		return;

3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054
	dev_info(&h->pdev->dev, "structure_size = %u\n",
				le32_to_cpu(map_buff->structure_size));
	dev_info(&h->pdev->dev, "volume_blk_size = %u\n",
			le32_to_cpu(map_buff->volume_blk_size));
	dev_info(&h->pdev->dev, "volume_blk_cnt = 0x%llx\n",
			le64_to_cpu(map_buff->volume_blk_cnt));
	dev_info(&h->pdev->dev, "physicalBlockShift = %u\n",
			map_buff->phys_blk_shift);
	dev_info(&h->pdev->dev, "parity_rotation_shift = %u\n",
			map_buff->parity_rotation_shift);
	dev_info(&h->pdev->dev, "strip_size = %u\n",
			le16_to_cpu(map_buff->strip_size));
	dev_info(&h->pdev->dev, "disk_starting_blk = 0x%llx\n",
			le64_to_cpu(map_buff->disk_starting_blk));
	dev_info(&h->pdev->dev, "disk_blk_cnt = 0x%llx\n",
			le64_to_cpu(map_buff->disk_blk_cnt));
	dev_info(&h->pdev->dev, "data_disks_per_row = %u\n",
			le16_to_cpu(map_buff->data_disks_per_row));
	dev_info(&h->pdev->dev, "metadata_disks_per_row = %u\n",
			le16_to_cpu(map_buff->metadata_disks_per_row));
	dev_info(&h->pdev->dev, "row_cnt = %u\n",
			le16_to_cpu(map_buff->row_cnt));
	dev_info(&h->pdev->dev, "layout_map_count = %u\n",
			le16_to_cpu(map_buff->layout_map_count));
D
Don Brace 已提交
3055
	dev_info(&h->pdev->dev, "flags = 0x%x\n",
3056
			le16_to_cpu(map_buff->flags));
D
Don Brace 已提交
3057 3058 3059
	dev_info(&h->pdev->dev, "encrypytion = %s\n",
			le16_to_cpu(map_buff->flags) &
			RAID_MAP_FLAG_ENCRYPT_ON ?  "ON" : "OFF");
3060 3061
	dev_info(&h->pdev->dev, "dekindex = %u\n",
			le16_to_cpu(map_buff->dekindex));
3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099
	map_cnt = le16_to_cpu(map_buff->layout_map_count);
	for (map = 0; map < map_cnt; map++) {
		dev_info(&h->pdev->dev, "Map%u:\n", map);
		row_cnt = le16_to_cpu(map_buff->row_cnt);
		for (row = 0; row < row_cnt; row++) {
			dev_info(&h->pdev->dev, "  Row%u:\n", row);
			disks_per_row =
				le16_to_cpu(map_buff->data_disks_per_row);
			for (col = 0; col < disks_per_row; col++, dd++)
				dev_info(&h->pdev->dev,
					"    D%02u: h=0x%04x xor=%u,%u\n",
					col, dd->ioaccel_handle,
					dd->xor_mult[0], dd->xor_mult[1]);
			disks_per_row =
				le16_to_cpu(map_buff->metadata_disks_per_row);
			for (col = 0; col < disks_per_row; col++, dd++)
				dev_info(&h->pdev->dev,
					"    M%02u: h=0x%04x xor=%u,%u\n",
					col, dd->ioaccel_handle,
					dd->xor_mult[0], dd->xor_mult[1]);
		}
	}
}
#else
static void hpsa_debug_map_buff(__attribute__((unused)) struct ctlr_info *h,
			__attribute__((unused)) int rc,
			__attribute__((unused)) struct raid_map_data *map_buff)
{
}
#endif

static int hpsa_get_raid_map(struct ctlr_info *h,
	unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
{
	int rc = 0;
	struct CommandList *c;
	struct ErrorInfo *ei;

3100
	c = cmd_alloc(h);
3101

3102 3103 3104
	if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map,
			sizeof(this_device->raid_map), 0,
			scsi3addr, TYPE_CMD)) {
3105 3106 3107
		dev_warn(&h->pdev->dev, "hpsa_get_raid_map fill_cmd failed\n");
		cmd_free(h, c);
		return -1;
3108
	}
3109
	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3110
					PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
3111 3112
	if (rc)
		goto out;
3113 3114
	ei = c->err_info;
	if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3115
		hpsa_scsi_interpret_error(h, c);
3116 3117
		rc = -1;
		goto out;
3118
	}
3119
	cmd_free(h, c);
3120 3121 3122 3123 3124 3125 3126 3127 3128

	/* @todo in the future, dynamically allocate RAID map memory */
	if (le32_to_cpu(this_device->raid_map.structure_size) >
				sizeof(this_device->raid_map)) {
		dev_warn(&h->pdev->dev, "RAID map size is too large!\n");
		rc = -1;
	}
	hpsa_debug_map_buff(h, rc, &this_device->raid_map);
	return rc;
3129 3130 3131
out:
	cmd_free(h, c);
	return rc;
3132 3133
}

K
Kevin Barnett 已提交
3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152
static int hpsa_bmic_sense_subsystem_information(struct ctlr_info *h,
		unsigned char scsi3addr[], u16 bmic_device_index,
		struct bmic_sense_subsystem_info *buf, size_t bufsize)
{
	int rc = IO_OK;
	struct CommandList *c;
	struct ErrorInfo *ei;

	c = cmd_alloc(h);

	rc = fill_cmd(c, BMIC_SENSE_SUBSYSTEM_INFORMATION, h, buf, bufsize,
		0, RAID_CTLR_LUNID, TYPE_CMD);
	if (rc)
		goto out;

	c->Request.CDB[2] = bmic_device_index & 0xff;
	c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;

	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3153
				PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
K
Kevin Barnett 已提交
3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165
	if (rc)
		goto out;
	ei = c->err_info;
	if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
		hpsa_scsi_interpret_error(h, c);
		rc = -1;
	}
out:
	cmd_free(h, c);
	return rc;
}

S
Scott Teel 已提交
3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180
static int hpsa_bmic_id_controller(struct ctlr_info *h,
	struct bmic_identify_controller *buf, size_t bufsize)
{
	int rc = IO_OK;
	struct CommandList *c;
	struct ErrorInfo *ei;

	c = cmd_alloc(h);

	rc = fill_cmd(c, BMIC_IDENTIFY_CONTROLLER, h, buf, bufsize,
		0, RAID_CTLR_LUNID, TYPE_CMD);
	if (rc)
		goto out;

	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3181
		PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
S
Scott Teel 已提交
3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193
	if (rc)
		goto out;
	ei = c->err_info;
	if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
		hpsa_scsi_interpret_error(h, c);
		rc = -1;
	}
out:
	cmd_free(h, c);
	return rc;
}

3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210
static int hpsa_bmic_id_physical_device(struct ctlr_info *h,
		unsigned char scsi3addr[], u16 bmic_device_index,
		struct bmic_identify_physical_device *buf, size_t bufsize)
{
	int rc = IO_OK;
	struct CommandList *c;
	struct ErrorInfo *ei;

	c = cmd_alloc(h);
	rc = fill_cmd(c, BMIC_IDENTIFY_PHYSICAL_DEVICE, h, buf, bufsize,
		0, RAID_CTLR_LUNID, TYPE_CMD);
	if (rc)
		goto out;

	c->Request.CDB[2] = bmic_device_index & 0xff;
	c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;

3211
	hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE,
3212
						DEFAULT_TIMEOUT);
3213 3214 3215 3216 3217 3218 3219
	ei = c->err_info;
	if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
		hpsa_scsi_interpret_error(h, c);
		rc = -1;
	}
out:
	cmd_free(h, c);
K
Kevin Barnett 已提交
3220

3221 3222 3223
	return rc;
}

3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244
/*
 * get enclosure information
 * struct ReportExtendedLUNdata *rlep - Used for BMIC drive number
 * struct hpsa_scsi_dev_t *encl_dev - device entry for enclosure
 * Uses id_physical_device to determine the box_index.
 */
static void hpsa_get_enclosure_info(struct ctlr_info *h,
			unsigned char *scsi3addr,
			struct ReportExtendedLUNdata *rlep, int rle_index,
			struct hpsa_scsi_dev_t *encl_dev)
{
	int rc = -1;
	struct CommandList *c = NULL;
	struct ErrorInfo *ei = NULL;
	struct bmic_sense_storage_box_params *bssbp = NULL;
	struct bmic_identify_physical_device *id_phys = NULL;
	struct ext_report_lun_entry *rle = &rlep->LUN[rle_index];
	u16 bmic_device_index = 0;

	bmic_device_index = GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]);

3245 3246
	if (bmic_device_index == 0xFF00 || MASKED_DEVICE(&rle->lunid[0])) {
		rc = IO_OK;
3247
		goto out;
3248
	}
3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279

	bssbp = kzalloc(sizeof(*bssbp), GFP_KERNEL);
	if (!bssbp)
		goto out;

	id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
	if (!id_phys)
		goto out;

	rc = hpsa_bmic_id_physical_device(h, scsi3addr, bmic_device_index,
						id_phys, sizeof(*id_phys));
	if (rc) {
		dev_warn(&h->pdev->dev, "%s: id_phys failed %d bdi[0x%x]\n",
			__func__, encl_dev->external, bmic_device_index);
		goto out;
	}

	c = cmd_alloc(h);

	rc = fill_cmd(c, BMIC_SENSE_STORAGE_BOX_PARAMS, h, bssbp,
			sizeof(*bssbp), 0, RAID_CTLR_LUNID, TYPE_CMD);

	if (rc)
		goto out;

	if (id_phys->phys_connector[1] == 'E')
		c->Request.CDB[5] = id_phys->box_index;
	else
		c->Request.CDB[5] = 0;

	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE,
3280
						DEFAULT_TIMEOUT);
3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306
	if (rc)
		goto out;

	ei = c->err_info;
	if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
		rc = -1;
		goto out;
	}

	encl_dev->box[id_phys->active_path_number] = bssbp->phys_box_on_port;
	memcpy(&encl_dev->phys_connector[id_phys->active_path_number],
		bssbp->phys_connector, sizeof(bssbp->phys_connector));

	rc = IO_OK;
out:
	kfree(bssbp);
	kfree(id_phys);

	if (c)
		cmd_free(h, c);

	if (rc != IO_OK)
		hpsa_show_dev_msg(KERN_INFO, h, encl_dev,
			"Error, could not get enclosure information\n");
}

K
Kevin Barnett 已提交
3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367
static u64 hpsa_get_sas_address_from_report_physical(struct ctlr_info *h,
						unsigned char *scsi3addr)
{
	struct ReportExtendedLUNdata *physdev;
	u32 nphysicals;
	u64 sa = 0;
	int i;

	physdev = kzalloc(sizeof(*physdev), GFP_KERNEL);
	if (!physdev)
		return 0;

	if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
		dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
		kfree(physdev);
		return 0;
	}
	nphysicals = get_unaligned_be32(physdev->LUNListLength) / 24;

	for (i = 0; i < nphysicals; i++)
		if (!memcmp(&physdev->LUN[i].lunid[0], scsi3addr, 8)) {
			sa = get_unaligned_be64(&physdev->LUN[i].wwid[0]);
			break;
		}

	kfree(physdev);

	return sa;
}

static void hpsa_get_sas_address(struct ctlr_info *h, unsigned char *scsi3addr,
					struct hpsa_scsi_dev_t *dev)
{
	int rc;
	u64 sa = 0;

	if (is_hba_lunid(scsi3addr)) {
		struct bmic_sense_subsystem_info *ssi;

		ssi = kzalloc(sizeof(*ssi), GFP_KERNEL);
		if (ssi == NULL) {
			dev_warn(&h->pdev->dev,
				"%s: out of memory\n", __func__);
			return;
		}

		rc = hpsa_bmic_sense_subsystem_information(h,
					scsi3addr, 0, ssi, sizeof(*ssi));
		if (rc == 0) {
			sa = get_unaligned_be64(ssi->primary_world_wide_id);
			h->sas_address = sa;
		}

		kfree(ssi);
	} else
		sa = hpsa_get_sas_address_from_report_physical(h, scsi3addr);

	dev->sas_address = sa;
}

/* Get a device id from inquiry page 0x83 */
3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410
static int hpsa_vpd_page_supported(struct ctlr_info *h,
	unsigned char scsi3addr[], u8 page)
{
	int rc;
	int i;
	int pages;
	unsigned char *buf, bufsize;

	buf = kzalloc(256, GFP_KERNEL);
	if (!buf)
		return 0;

	/* Get the size of the page list first */
	rc = hpsa_scsi_do_inquiry(h, scsi3addr,
				VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
				buf, HPSA_VPD_HEADER_SZ);
	if (rc != 0)
		goto exit_unsupported;
	pages = buf[3];
	if ((pages + HPSA_VPD_HEADER_SZ) <= 255)
		bufsize = pages + HPSA_VPD_HEADER_SZ;
	else
		bufsize = 255;

	/* Get the whole VPD page list */
	rc = hpsa_scsi_do_inquiry(h, scsi3addr,
				VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
				buf, bufsize);
	if (rc != 0)
		goto exit_unsupported;

	pages = buf[3];
	for (i = 1; i <= pages; i++)
		if (buf[3 + i] == page)
			goto exit_supported;
exit_unsupported:
	kfree(buf);
	return 0;
exit_supported:
	kfree(buf);
	return 1;
}

3411 3412 3413 3414 3415 3416 3417 3418 3419
static void hpsa_get_ioaccel_status(struct ctlr_info *h,
	unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
{
	int rc;
	unsigned char *buf;
	u8 ioaccel_status;

	this_device->offload_config = 0;
	this_device->offload_enabled = 0;
3420
	this_device->offload_to_be_enabled = 0;
3421 3422 3423 3424

	buf = kzalloc(64, GFP_KERNEL);
	if (!buf)
		return;
3425 3426
	if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_IOACCEL_STATUS))
		goto out;
3427
	rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3428
			VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, buf, 64);
3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443
	if (rc != 0)
		goto out;

#define IOACCEL_STATUS_BYTE 4
#define OFFLOAD_CONFIGURED_BIT 0x01
#define OFFLOAD_ENABLED_BIT 0x02
	ioaccel_status = buf[IOACCEL_STATUS_BYTE];
	this_device->offload_config =
		!!(ioaccel_status & OFFLOAD_CONFIGURED_BIT);
	if (this_device->offload_config) {
		this_device->offload_enabled =
			!!(ioaccel_status & OFFLOAD_ENABLED_BIT);
		if (hpsa_get_raid_map(h, scsi3addr, this_device))
			this_device->offload_enabled = 0;
	}
3444
	this_device->offload_to_be_enabled = this_device->offload_enabled;
3445 3446 3447 3448 3449
out:
	kfree(buf);
	return;
}

3450 3451
/* Get the device id from inquiry page 0x83 */
static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr,
D
Don Brace 已提交
3452
	unsigned char *device_id, int index, int buflen)
3453 3454 3455 3456 3457 3458 3459 3460
{
	int rc;
	unsigned char *buf;

	if (buflen > 16)
		buflen = 16;
	buf = kzalloc(64, GFP_KERNEL);
	if (!buf)
3461
		return -ENOMEM;
3462
	rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 0x83, buf, 64);
3463
	if (rc == 0)
D
Don Brace 已提交
3464 3465
		memcpy(device_id, &buf[index], buflen);

3466
	kfree(buf);
D
Don Brace 已提交
3467

3468 3469 3470 3471
	return rc != 0;
}

static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
3472
		void *buf, int bufsize,
3473 3474 3475 3476 3477 3478 3479
		int extended_response)
{
	int rc = IO_OK;
	struct CommandList *c;
	unsigned char scsi3addr[8];
	struct ErrorInfo *ei;

3480
	c = cmd_alloc(h);
3481

3482 3483
	/* address the controller */
	memset(scsi3addr, 0, sizeof(scsi3addr));
3484 3485 3486 3487 3488
	if (fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h,
		buf, bufsize, 0, scsi3addr, TYPE_CMD)) {
		rc = -1;
		goto out;
	}
3489 3490
	if (extended_response)
		c->Request.CDB[1] = extended_response;
3491
	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3492
					PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
3493 3494
	if (rc)
		goto out;
3495 3496 3497
	ei = c->err_info;
	if (ei->CommandStatus != 0 &&
	    ei->CommandStatus != CMD_DATA_UNDERRUN) {
3498
		hpsa_scsi_interpret_error(h, c);
3499
		rc = -1;
3500
	} else {
3501 3502 3503
		struct ReportLUNdata *rld = buf;

		if (rld->extended_response_flag != extended_response) {
3504 3505 3506
			dev_err(&h->pdev->dev,
				"report luns requested format %u, got %u\n",
				extended_response,
3507
				rld->extended_response_flag);
3508 3509
			rc = -1;
		}
3510
	}
3511
out:
3512
	cmd_free(h, c);
3513 3514 3515 3516
	return rc;
}

static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
3517
		struct ReportExtendedLUNdata *buf, int bufsize)
3518
{
3519 3520
	return hpsa_scsi_do_report_luns(h, 0, buf, bufsize,
						HPSA_REPORT_PHYS_EXTENDED);
3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536
}

static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,
		struct ReportLUNdata *buf, int bufsize)
{
	return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0);
}

static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device,
	int bus, int target, int lun)
{
	device->bus = bus;
	device->target = target;
	device->lun = lun;
}

3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550
/* Use VPD inquiry to get details of volume status */
static int hpsa_get_volume_status(struct ctlr_info *h,
					unsigned char scsi3addr[])
{
	int rc;
	int status;
	int size;
	unsigned char *buf;

	buf = kzalloc(64, GFP_KERNEL);
	if (!buf)
		return HPSA_VPD_LV_STATUS_UNSUPPORTED;

	/* Does controller have VPD for logical volume status? */
3551
	if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_STATUS))
3552 3553 3554 3555 3556
		goto exit_failed;

	/* Get the size of the VPD return buffer */
	rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
					buf, HPSA_VPD_HEADER_SZ);
3557
	if (rc != 0)
3558 3559 3560 3561 3562 3563
		goto exit_failed;
	size = buf[3];

	/* Now get the whole VPD buffer */
	rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
					buf, size + HPSA_VPD_HEADER_SZ);
3564
	if (rc != 0)
3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577
		goto exit_failed;
	status = buf[4]; /* status byte */

	kfree(buf);
	return status;
exit_failed:
	kfree(buf);
	return HPSA_VPD_LV_STATUS_UNSUPPORTED;
}

/* Determine offline status of a volume.
 * Return either:
 *  0 (not offline)
3578
 *  0xff (offline for unknown reasons)
3579 3580 3581
 *  # (integer code indicating one of several NOT READY states
 *     describing why a volume is to be kept offline)
 */
3582
static int hpsa_volume_offline(struct ctlr_info *h,
3583 3584 3585
					unsigned char scsi3addr[])
{
	struct CommandList *c;
3586 3587 3588
	unsigned char *sense;
	u8 sense_key, asc, ascq;
	int sense_len;
3589
	int rc, ldstat = 0;
3590 3591 3592 3593 3594 3595 3596
	u16 cmd_status;
	u8 scsi_status;
#define ASC_LUN_NOT_READY 0x04
#define ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS 0x04
#define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02

	c = cmd_alloc(h);
3597

3598
	(void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD);
3599 3600
	rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
					DEFAULT_TIMEOUT);
3601 3602 3603 3604
	if (rc) {
		cmd_free(h, c);
		return 0;
	}
3605
	sense = c->err_info->SenseInfo;
3606 3607 3608 3609 3610
	if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
		sense_len = sizeof(c->err_info->SenseInfo);
	else
		sense_len = c->err_info->SenseLen;
	decode_sense_data(sense, sense_len, &sense_key, &asc, &ascq);
3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627
	cmd_status = c->err_info->CommandStatus;
	scsi_status = c->err_info->ScsiStatus;
	cmd_free(h, c);
	/* Is the volume 'not ready'? */
	if (cmd_status != CMD_TARGET_STATUS ||
		scsi_status != SAM_STAT_CHECK_CONDITION ||
		sense_key != NOT_READY ||
		asc != ASC_LUN_NOT_READY)  {
		return 0;
	}

	/* Determine the reason for not ready state */
	ldstat = hpsa_get_volume_status(h, scsi3addr);

	/* Keep volume offline in certain cases: */
	switch (ldstat) {
	case HPSA_LV_UNDERGOING_ERASE:
S
Scott Benesh 已提交
3628
	case HPSA_LV_NOT_AVAILABLE:
3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650
	case HPSA_LV_UNDERGOING_RPI:
	case HPSA_LV_PENDING_RPI:
	case HPSA_LV_ENCRYPTED_NO_KEY:
	case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
	case HPSA_LV_UNDERGOING_ENCRYPTION:
	case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
	case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
		return ldstat;
	case HPSA_VPD_LV_STATUS_UNSUPPORTED:
		/* If VPD status page isn't available,
		 * use ASC/ASCQ to determine state
		 */
		if ((ascq == ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS) ||
			(ascq == ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ))
			return ldstat;
		break;
	default:
		break;
	}
	return 0;
}

S
Stephen Cameron 已提交
3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672
/*
 * Find out if a logical device supports aborts by simply trying one.
 * Smart Array may claim not to support aborts on logical drives, but
 * if a MSA2000 * is connected, the drives on that will be presented
 * by the Smart Array as logical drives, and aborts may be sent to
 * those devices successfully.  So the simplest way to find out is
 * to simply try an abort and see how the device responds.
 */
static int hpsa_device_supports_aborts(struct ctlr_info *h,
					unsigned char *scsi3addr)
{
	struct CommandList *c;
	struct ErrorInfo *ei;
	int rc = 0;

	u64 tag = (u64) -1; /* bogus tag */

	/* Assume that physical devices support aborts */
	if (!is_logical_dev_addr_mode(scsi3addr))
		return 1;

	c = cmd_alloc(h);
3673

S
Stephen Cameron 已提交
3674
	(void) fill_cmd(c, HPSA_ABORT_MSG, h, &tag, 0, 0, scsi3addr, TYPE_MSG);
3675 3676
	(void) hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
					DEFAULT_TIMEOUT);
S
Stephen Cameron 已提交
3677 3678 3679 3680 3681 3682 3683 3684 3685 3686
	/* no unmap needed here because no data xfer. */
	ei = c->err_info;
	switch (ei->CommandStatus) {
	case CMD_INVALID:
		rc = 0;
		break;
	case CMD_UNABORTABLE:
	case CMD_ABORT_FAILED:
		rc = 1;
		break;
3687 3688 3689
	case CMD_TMF_STATUS:
		rc = hpsa_evaluate_tmf_status(h, c);
		break;
S
Stephen Cameron 已提交
3690 3691 3692 3693 3694 3695 3696 3697
	default:
		rc = 0;
		break;
	}
	cmd_free(h, c);
	return rc;
}

3698
static int hpsa_update_device_info(struct ctlr_info *h,
3699 3700
	unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device,
	unsigned char *is_OBDR_device)
3701
{
3702 3703 3704 3705 3706 3707

#define OBDR_SIG_OFFSET 43
#define OBDR_TAPE_SIG "$DR-10"
#define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1)
#define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN)

3708
	unsigned char *inq_buff;
3709
	unsigned char *obdr_sig;
3710
	int rc = 0;
3711

3712
	inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
3713 3714
	if (!inq_buff) {
		rc = -ENOMEM;
3715
		goto bail_out;
3716
	}
3717 3718 3719 3720 3721 3722 3723

	/* Do an inquiry to the device to see what it is. */
	if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
		(unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
		/* Inquiry failed (msg printed already) */
		dev_err(&h->pdev->dev,
			"hpsa_update_device_info: inquiry failed\n");
3724
		rc = -EIO;
3725 3726 3727
		goto bail_out;
	}

3728 3729
	scsi_sanitize_inquiry_string(&inq_buff[8], 8);
	scsi_sanitize_inquiry_string(&inq_buff[16], 16);
D
Don Brace 已提交
3730

3731 3732 3733 3734 3735 3736 3737 3738
	this_device->devtype = (inq_buff[0] & 0x1f);
	memcpy(this_device->scsi3addr, scsi3addr, 8);
	memcpy(this_device->vendor, &inq_buff[8],
		sizeof(this_device->vendor));
	memcpy(this_device->model, &inq_buff[16],
		sizeof(this_device->model));
	memset(this_device->device_id, 0,
		sizeof(this_device->device_id));
D
Don Brace 已提交
3739
	hpsa_get_device_id(h, scsi3addr, this_device->device_id, 8,
3740 3741
		sizeof(this_device->device_id));

D
Don Brace 已提交
3742 3743
	if ((this_device->devtype == TYPE_DISK ||
		this_device->devtype == TYPE_ZBC) &&
3744
		is_logical_dev_addr_mode(scsi3addr)) {
3745 3746
		int volume_offline;

3747
		hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level);
3748 3749
		if (h->fw_support & MISC_FW_RAID_OFFLOAD_BASIC)
			hpsa_get_ioaccel_status(h, scsi3addr, this_device);
3750 3751 3752 3753
		volume_offline = hpsa_volume_offline(h, scsi3addr);
		if (volume_offline < 0 || volume_offline > 0xff)
			volume_offline = HPSA_VPD_LV_STATUS_UNSUPPORTED;
		this_device->volume_offline = volume_offline & 0xff;
3754
	} else {
3755
		this_device->raid_level = RAID_UNKNOWN;
3756 3757
		this_device->offload_config = 0;
		this_device->offload_enabled = 0;
3758
		this_device->offload_to_be_enabled = 0;
3759
		this_device->hba_ioaccel_enabled = 0;
3760
		this_device->volume_offline = 0;
3761
		this_device->queue_depth = h->nr_cmds;
3762
	}
3763

3764 3765 3766 3767 3768 3769 3770 3771 3772
	if (is_OBDR_device) {
		/* See if this is a One-Button-Disaster-Recovery device
		 * by looking for "$DR-10" at offset 43 in inquiry data.
		 */
		obdr_sig = &inq_buff[OBDR_SIG_OFFSET];
		*is_OBDR_device = (this_device->devtype == TYPE_ROM &&
					strncmp(obdr_sig, OBDR_TAPE_SIG,
						OBDR_SIG_LEN) == 0);
	}
3773 3774 3775 3776 3777
	kfree(inq_buff);
	return 0;

bail_out:
	kfree(inq_buff);
3778
	return rc;
3779 3780
}

S
Stephen Cameron 已提交
3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805
static void hpsa_update_device_supports_aborts(struct ctlr_info *h,
			struct hpsa_scsi_dev_t *dev, u8 *scsi3addr)
{
	unsigned long flags;
	int rc, entry;
	/*
	 * See if this device supports aborts.  If we already know
	 * the device, we already know if it supports aborts, otherwise
	 * we have to find out if it supports aborts by trying one.
	 */
	spin_lock_irqsave(&h->devlock, flags);
	rc = hpsa_scsi_find_entry(dev, h->dev, h->ndevices, &entry);
	if ((rc == DEVICE_SAME || rc == DEVICE_UPDATED) &&
		entry >= 0 && entry < h->ndevices) {
		dev->supports_aborts = h->dev[entry]->supports_aborts;
		spin_unlock_irqrestore(&h->devlock, flags);
	} else {
		spin_unlock_irqrestore(&h->devlock, flags);
		dev->supports_aborts =
				hpsa_device_supports_aborts(h, scsi3addr);
		if (dev->supports_aborts < 0)
			dev->supports_aborts = 0;
	}
}

3806 3807
/*
 * Helper function to assign bus, target, lun mapping of devices.
3808 3809 3810
 * Logical drive target and lun are assigned at this time, but
 * physical device lun and target assignment are deferred (assigned
 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
3811
*/
3812
static void figure_bus_target_lun(struct ctlr_info *h,
3813
	u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device)
3814
{
3815
	u32 lunid = get_unaligned_le32(lunaddrbytes);
3816 3817 3818

	if (!is_logical_dev_addr_mode(lunaddrbytes)) {
		/* physical device, target and lun filled in later */
3819
		if (is_hba_lunid(lunaddrbytes))
3820 3821
			hpsa_set_bus_target_lun(device,
					HPSA_HBA_BUS, 0, lunid & 0x3fff);
3822
		else
3823
			/* defer target, lun assignment for physical devices */
3824 3825
			hpsa_set_bus_target_lun(device,
					HPSA_PHYSICAL_DEVICE_BUS, -1, -1);
3826 3827 3828
		return;
	}
	/* It's a logical device */
S
Scott Teel 已提交
3829
	if (device->external) {
3830
		hpsa_set_bus_target_lun(device,
3831 3832
			HPSA_EXTERNAL_RAID_VOLUME_BUS, (lunid >> 16) & 0x3fff,
			lunid & 0x00ff);
3833
		return;
3834
	}
3835 3836
	hpsa_set_bus_target_lun(device, HPSA_RAID_VOLUME_BUS,
				0, lunid & 0x3fff);
3837 3838 3839
}


3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850
/*
 * Get address of physical disk used for an ioaccel2 mode command:
 *	1. Extract ioaccel2 handle from the command.
 *	2. Find a matching ioaccel2 handle from list of physical disks.
 *	3. Return:
 *		1 and set scsi3addr to address of matching physical
 *		0 if no matching physical disk was found.
 */
static int hpsa_get_pdisk_of_ioaccel2(struct ctlr_info *h,
	struct CommandList *ioaccel2_cmd_to_abort, unsigned char *scsi3addr)
{
3851 3852 3853
	struct io_accel2_cmd *c2 =
			&h->ioaccel2_cmd_pool[ioaccel2_cmd_to_abort->cmdindex];
	unsigned long flags;
3854 3855
	int i;

3856 3857 3858 3859 3860 3861 3862 3863 3864 3865
	spin_lock_irqsave(&h->devlock, flags);
	for (i = 0; i < h->ndevices; i++)
		if (h->dev[i]->ioaccel_handle == le32_to_cpu(c2->scsi_nexus)) {
			memcpy(scsi3addr, h->dev[i]->scsi3addr,
				sizeof(h->dev[i]->scsi3addr));
			spin_unlock_irqrestore(&h->devlock, flags);
			return 1;
		}
	spin_unlock_irqrestore(&h->devlock, flags);
	return 0;
3866
}
3867

S
Scott Teel 已提交
3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888
static int  figure_external_status(struct ctlr_info *h, int raid_ctlr_position,
	int i, int nphysicals, int nlocal_logicals)
{
	/* In report logicals, local logicals are listed first,
	* then any externals.
	*/
	int logicals_start = nphysicals + (raid_ctlr_position == 0);

	if (i == raid_ctlr_position)
		return 0;

	if (i < logicals_start)
		return 0;

	/* i is in logicals range, but still within local logicals */
	if ((i - nphysicals - (raid_ctlr_position == 0)) < nlocal_logicals)
		return 0;

	return 1; /* it's an external lun */
}

3889 3890 3891 3892 3893 3894 3895
/*
 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG.  Data is returned in physdev,
 * logdev.  The number of luns in physdev and logdev are returned in
 * *nphysicals and *nlogicals, respectively.
 * Returns 0 on success, -1 otherwise.
 */
static int hpsa_gather_lun_info(struct ctlr_info *h,
3896
	struct ReportExtendedLUNdata *physdev, u32 *nphysicals,
3897
	struct ReportLUNdata *logdev, u32 *nlogicals)
3898
{
3899
	if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
3900 3901 3902
		dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
		return -1;
	}
3903
	*nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 24;
3904
	if (*nphysicals > HPSA_MAX_PHYS_LUN) {
3905 3906
		dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded. %d LUNs ignored.\n",
			HPSA_MAX_PHYS_LUN, *nphysicals - HPSA_MAX_PHYS_LUN);
3907 3908
		*nphysicals = HPSA_MAX_PHYS_LUN;
	}
3909
	if (hpsa_scsi_do_report_log_luns(h, logdev, sizeof(*logdev))) {
3910 3911 3912
		dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
		return -1;
	}
3913
	*nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8;
3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931
	/* Reject Logicals in excess of our max capability. */
	if (*nlogicals > HPSA_MAX_LUN) {
		dev_warn(&h->pdev->dev,
			"maximum logical LUNs (%d) exceeded.  "
			"%d LUNs ignored.\n", HPSA_MAX_LUN,
			*nlogicals - HPSA_MAX_LUN);
			*nlogicals = HPSA_MAX_LUN;
	}
	if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) {
		dev_warn(&h->pdev->dev,
			"maximum logical + physical LUNs (%d) exceeded. "
			"%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
			*nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN);
		*nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals;
	}
	return 0;
}

D
Don Brace 已提交
3932 3933
static u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position,
	int i, int nphysicals, int nlogicals,
3934
	struct ReportExtendedLUNdata *physdev_list,
3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948
	struct ReportLUNdata *logdev_list)
{
	/* Helper function, figure out where the LUN ID info is coming from
	 * given index i, lists of physical and logical devices, where in
	 * the list the raid controller is supposed to appear (first or last)
	 */

	int logicals_start = nphysicals + (raid_ctlr_position == 0);
	int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0);

	if (i == raid_ctlr_position)
		return RAID_CTLR_LUNID;

	if (i < logicals_start)
3949 3950
		return &physdev_list->LUN[i -
				(raid_ctlr_position == 0)].lunid[0];
3951 3952 3953 3954 3955 3956 3957 3958

	if (i < last_device)
		return &logdev_list->LUN[i - nphysicals -
			(raid_ctlr_position == 0)][0];
	BUG();
	return NULL;
}

3959 3960 3961
/* get physical drive ioaccel handle and queue depth */
static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h,
		struct hpsa_scsi_dev_t *dev,
3962
		struct ReportExtendedLUNdata *rlep, int rle_index,
3963 3964 3965
		struct bmic_identify_physical_device *id_phys)
{
	int rc;
3966
	struct ext_report_lun_entry *rle = &rlep->LUN[rle_index];
3967 3968

	dev->ioaccel_handle = rle->ioaccel_handle;
3969
	if ((rle->device_flags & 0x08) && dev->ioaccel_handle)
3970
		dev->hba_ioaccel_enabled = 1;
3971
	memset(id_phys, 0, sizeof(*id_phys));
3972 3973
	rc = hpsa_bmic_id_physical_device(h, &rle->lunid[0],
			GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]), id_phys,
3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985
			sizeof(*id_phys));
	if (!rc)
		/* Reserve space for FW operations */
#define DRIVE_CMDS_RESERVED_FOR_FW 2
#define DRIVE_QUEUE_DEPTH 7
		dev->queue_depth =
			le16_to_cpu(id_phys->current_queue_depth_limit) -
				DRIVE_CMDS_RESERVED_FOR_FW;
	else
		dev->queue_depth = DRIVE_QUEUE_DEPTH; /* conservative */
}

3986
static void hpsa_get_path_info(struct hpsa_scsi_dev_t *this_device,
3987
	struct ReportExtendedLUNdata *rlep, int rle_index,
3988 3989
	struct bmic_identify_physical_device *id_phys)
{
3990 3991 3992
	struct ext_report_lun_entry *rle = &rlep->LUN[rle_index];

	if ((rle->device_flags & 0x08) && this_device->ioaccel_handle)
3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011
		this_device->hba_ioaccel_enabled = 1;

	memcpy(&this_device->active_path_index,
		&id_phys->active_path_number,
		sizeof(this_device->active_path_index));
	memcpy(&this_device->path_map,
		&id_phys->redundant_path_present_map,
		sizeof(this_device->path_map));
	memcpy(&this_device->box,
		&id_phys->alternate_paths_phys_box_on_port,
		sizeof(this_device->box));
	memcpy(&this_device->phys_connector,
		&id_phys->alternate_paths_phys_connector,
		sizeof(this_device->phys_connector));
	memcpy(&this_device->bay,
		&id_phys->phys_bay_in_box,
		sizeof(this_device->bay));
}

S
Scott Teel 已提交
4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037
/* get number of local logical disks. */
static int hpsa_set_local_logical_count(struct ctlr_info *h,
	struct bmic_identify_controller *id_ctlr,
	u32 *nlocals)
{
	int rc;

	if (!id_ctlr) {
		dev_warn(&h->pdev->dev, "%s: id_ctlr buffer is NULL.\n",
			__func__);
		return -ENOMEM;
	}
	memset(id_ctlr, 0, sizeof(*id_ctlr));
	rc = hpsa_bmic_id_controller(h, id_ctlr, sizeof(*id_ctlr));
	if (!rc)
		if (id_ctlr->configured_logical_drive_count < 256)
			*nlocals = id_ctlr->configured_logical_drive_count;
		else
			*nlocals = le16_to_cpu(
					id_ctlr->extended_logical_unit_count);
	else
		*nlocals = -1;
	return rc;
}


D
Don Brace 已提交
4038
static void hpsa_update_scsi_devices(struct ctlr_info *h)
4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049
{
	/* the idea here is we could get notified
	 * that some devices have changed, so we do a report
	 * physical luns and report logical luns cmd, and adjust
	 * our list of devices accordingly.
	 *
	 * The scsi3addr's of devices won't change so long as the
	 * adapter is not reset.  That means we can rescan and
	 * tell which devices we already know about, vs. new
	 * devices, vs.  disappearing devices.
	 */
4050
	struct ReportExtendedLUNdata *physdev_list = NULL;
4051
	struct ReportLUNdata *logdev_list = NULL;
4052
	struct bmic_identify_physical_device *id_phys = NULL;
S
Scott Teel 已提交
4053
	struct bmic_identify_controller *id_ctlr = NULL;
4054 4055
	u32 nphysicals = 0;
	u32 nlogicals = 0;
S
Scott Teel 已提交
4056
	u32 nlocal_logicals = 0;
4057
	u32 ndev_allocated = 0;
4058 4059
	struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
	int ncurrent = 0;
4060
	int i, n_ext_target_devs, ndevs_to_allocate;
4061
	int raid_ctlr_position;
K
Kevin Barnett 已提交
4062
	bool physical_device;
4063
	DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS);
4064

4065
	currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_DEVICES, GFP_KERNEL);
4066 4067
	physdev_list = kzalloc(sizeof(*physdev_list), GFP_KERNEL);
	logdev_list = kzalloc(sizeof(*logdev_list), GFP_KERNEL);
4068
	tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL);
4069
	id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
S
Scott Teel 已提交
4070
	id_ctlr = kzalloc(sizeof(*id_ctlr), GFP_KERNEL);
4071

4072
	if (!currentsd || !physdev_list || !logdev_list ||
S
Scott Teel 已提交
4073
		!tmpdevice || !id_phys || !id_ctlr) {
4074 4075 4076 4077 4078
		dev_err(&h->pdev->dev, "out of memory\n");
		goto out;
	}
	memset(lunzerobits, 0, sizeof(lunzerobits));

D
Don Brace 已提交
4079 4080
	h->drv_req_rescan = 0; /* cancel scheduled rescan - we're doing it. */

4081
	if (hpsa_gather_lun_info(h, physdev_list, &nphysicals,
D
Don Brace 已提交
4082 4083
			logdev_list, &nlogicals)) {
		h->drv_req_rescan = 1;
4084
		goto out;
D
Don Brace 已提交
4085
	}
4086

S
Scott Teel 已提交
4087 4088 4089 4090 4091 4092
	/* Set number of local logicals (non PTRAID) */
	if (hpsa_set_local_logical_count(h, id_ctlr, &nlocal_logicals)) {
		dev_warn(&h->pdev->dev,
			"%s: Can't determine number of local logical devices.\n",
			__func__);
	}
4093

4094 4095 4096
	/* We might see up to the maximum number of logical and physical disks
	 * plus external target devices, and a device for the local RAID
	 * controller.
4097
	 */
4098
	ndevs_to_allocate = nphysicals + nlogicals + MAX_EXT_TARGETS + 1;
4099 4100 4101

	/* Allocate the per device structures */
	for (i = 0; i < ndevs_to_allocate; i++) {
4102 4103 4104 4105 4106 4107 4108
		if (i >= HPSA_MAX_DEVICES) {
			dev_warn(&h->pdev->dev, "maximum devices (%d) exceeded."
				"  %d devices ignored.\n", HPSA_MAX_DEVICES,
				ndevs_to_allocate - HPSA_MAX_DEVICES);
			break;
		}

4109 4110 4111 4112
		currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL);
		if (!currentsd[i]) {
			dev_warn(&h->pdev->dev, "out of memory at %s:%d\n",
				__FILE__, __LINE__);
D
Don Brace 已提交
4113
			h->drv_req_rescan = 1;
4114 4115 4116 4117 4118
			goto out;
		}
		ndev_allocated++;
	}

4119
	if (is_scsi_rev_5(h))
4120 4121 4122 4123
		raid_ctlr_position = 0;
	else
		raid_ctlr_position = nphysicals + nlogicals;

4124
	/* adjust our table of devices */
4125
	n_ext_target_devs = 0;
4126
	for (i = 0; i < nphysicals + nlogicals + 1; i++) {
4127
		u8 *lunaddrbytes, is_OBDR = 0;
4128
		int rc = 0;
4129
		int phys_dev_index = i - (raid_ctlr_position == 0);
4130

K
Kevin Barnett 已提交
4131
		physical_device = i < nphysicals + (raid_ctlr_position == 0);
4132 4133

		/* Figure out where the LUN ID info is coming from */
4134 4135
		lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position,
			i, nphysicals, nlogicals, physdev_list, logdev_list);
4136 4137

		/* skip masked non-disk devices */
K
Kevin Barnett 已提交
4138
		if (MASKED_DEVICE(lunaddrbytes) && physical_device &&
4139 4140
		   (physdev_list->LUN[phys_dev_index].device_type != 0x06) &&
		   (physdev_list->LUN[phys_dev_index].device_flags & 0x01))
K
Kevin Barnett 已提交
4141
			continue;
4142 4143

		/* Get device type, vendor, model, device id */
4144 4145 4146 4147 4148
		rc = hpsa_update_device_info(h, lunaddrbytes, tmpdevice,
							&is_OBDR);
		if (rc == -ENOMEM) {
			dev_warn(&h->pdev->dev,
				"Out of memory, rescan deferred.\n");
D
Don Brace 已提交
4149
			h->drv_req_rescan = 1;
4150
			goto out;
D
Don Brace 已提交
4151
		}
4152 4153 4154 4155 4156 4157
		if (rc) {
			dev_warn(&h->pdev->dev,
				"Inquiry failed, skipping device.\n");
			continue;
		}

S
Scott Teel 已提交
4158 4159 4160 4161 4162
		/* Determine if this is a lun from an external target array */
		tmpdevice->external =
			figure_external_status(h, raid_ctlr_position, i,
						nphysicals, nlocal_logicals);

4163
		figure_bus_target_lun(h, lunaddrbytes, tmpdevice);
S
Stephen Cameron 已提交
4164
		hpsa_update_device_supports_aborts(h, tmpdevice, lunaddrbytes);
4165 4166
		this_device = currentsd[ncurrent];

4167 4168
		/* Turn on discovery_polling if there are ext target devices.
		 * Event-based change notification is unreliable for those.
4169
		 */
4170 4171 4172 4173 4174 4175
		if (!h->discovery_polling) {
			if (tmpdevice->external) {
				h->discovery_polling = 1;
				dev_info(&h->pdev->dev,
					"External target, activate discovery polling.\n");
			}
4176 4177
		}

4178

4179
		*this_device = *tmpdevice;
K
Kevin Barnett 已提交
4180
		this_device->physical_device = physical_device;
4181

K
Kevin Barnett 已提交
4182 4183 4184 4185 4186
		/*
		 * Expose all devices except for physical devices that
		 * are masked.
		 */
		if (MASKED_DEVICE(lunaddrbytes) && this_device->physical_device)
4187 4188 4189
			this_device->expose_device = 0;
		else
			this_device->expose_device = 1;
4190

K
Kevin Barnett 已提交
4191 4192 4193 4194 4195 4196

		/*
		 * Get the SAS address for physical devices that are exposed.
		 */
		if (this_device->physical_device && this_device->expose_device)
			hpsa_get_sas_address(h, lunaddrbytes, this_device);
4197

4198
		switch (this_device->devtype) {
4199
		case TYPE_ROM:
4200 4201 4202 4203 4204 4205 4206
			/* We don't *really* support actual CD-ROM devices,
			 * just "One Button Disaster Recovery" tape drive
			 * which temporarily pretends to be a CD-ROM drive.
			 * So we check that the device is really an OBDR tape
			 * device by checking for "$DR-10" in bytes 43-48 of
			 * the inquiry data.
			 */
4207 4208
			if (is_OBDR)
				ncurrent++;
4209 4210
			break;
		case TYPE_DISK:
D
Don Brace 已提交
4211
		case TYPE_ZBC:
K
Kevin Barnett 已提交
4212
			if (this_device->physical_device) {
4213 4214
				/* The disk is in HBA mode. */
				/* Never use RAID mapper in HBA mode. */
4215
				this_device->offload_enabled = 0;
4216
				hpsa_get_ioaccel_drive_info(h, this_device,
4217 4218 4219
					physdev_list, phys_dev_index, id_phys);
				hpsa_get_path_info(this_device,
					physdev_list, phys_dev_index, id_phys);
4220
			}
4221
			ncurrent++;
4222 4223 4224
			break;
		case TYPE_TAPE:
		case TYPE_MEDIUM_CHANGER:
4225 4226
			ncurrent++;
			break;
4227
		case TYPE_ENCLOSURE:
4228 4229
			if (!this_device->external)
				hpsa_get_enclosure_info(h, lunaddrbytes,
4230 4231
						physdev_list, phys_dev_index,
						this_device);
4232
			ncurrent++;
4233
			break;
4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246
		case TYPE_RAID:
			/* Only present the Smartarray HBA as a RAID controller.
			 * If it's a RAID controller other than the HBA itself
			 * (an external RAID controller, MSA500 or similar)
			 * don't present it.
			 */
			if (!is_hba_lunid(lunaddrbytes))
				break;
			ncurrent++;
			break;
		default:
			break;
		}
4247
		if (ncurrent >= HPSA_MAX_DEVICES)
4248 4249
			break;
	}
K
Kevin Barnett 已提交
4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261

	if (h->sas_host == NULL) {
		int rc = 0;

		rc = hpsa_add_sas_host(h);
		if (rc) {
			dev_warn(&h->pdev->dev,
				"Could not add sas host %d\n", rc);
			goto out;
		}
	}

D
Don Brace 已提交
4262
	adjust_hpsa_scsi_table(h, currentsd, ncurrent);
4263 4264 4265 4266 4267 4268 4269
out:
	kfree(tmpdevice);
	for (i = 0; i < ndev_allocated; i++)
		kfree(currentsd[i]);
	kfree(currentsd);
	kfree(physdev_list);
	kfree(logdev_list);
S
Scott Teel 已提交
4270
	kfree(id_ctlr);
4271
	kfree(id_phys);
4272 4273
}

4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284
static void hpsa_set_sg_descriptor(struct SGDescriptor *desc,
				   struct scatterlist *sg)
{
	u64 addr64 = (u64) sg_dma_address(sg);
	unsigned int len = sg_dma_len(sg);

	desc->Addr = cpu_to_le64(addr64);
	desc->Len = cpu_to_le32(len);
	desc->Ext = 0;
}

4285 4286
/*
 * hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
4287 4288 4289
 * dma mapping  and fills in the scatter gather entries of the
 * hpsa command, cp.
 */
4290
static int hpsa_scatter_gather(struct ctlr_info *h,
4291 4292 4293 4294
		struct CommandList *cp,
		struct scsi_cmnd *cmd)
{
	struct scatterlist *sg;
4295
	int use_sg, i, sg_limit, chained, last_sg;
4296
	struct SGDescriptor *curr_sg;
4297

4298
	BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
4299 4300 4301 4302 4303 4304 4305 4306

	use_sg = scsi_dma_map(cmd);
	if (use_sg < 0)
		return use_sg;

	if (!use_sg)
		goto sglist_finished;

4307 4308 4309 4310 4311 4312 4313
	/*
	 * If the number of entries is greater than the max for a single list,
	 * then we have a chained list; we will set up all but one entry in the
	 * first list (the last entry is saved for link information);
	 * otherwise, we don't have a chained list and we'll set up at each of
	 * the entries in the one list.
	 */
4314
	curr_sg = cp->SG;
4315 4316 4317 4318
	chained = use_sg > h->max_cmd_sg_entries;
	sg_limit = chained ? h->max_cmd_sg_entries - 1 : use_sg;
	last_sg = scsi_sg_count(cmd) - 1;
	scsi_for_each_sg(cmd, sg, sg_limit, i) {
4319
		hpsa_set_sg_descriptor(curr_sg, sg);
4320 4321
		curr_sg++;
	}
4322

4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337
	if (chained) {
		/*
		 * Continue with the chained list.  Set curr_sg to the chained
		 * list.  Modify the limit to the total count less the entries
		 * we've already set up.  Resume the scan at the list entry
		 * where the previous loop left off.
		 */
		curr_sg = h->cmd_sg_list[cp->cmdindex];
		sg_limit = use_sg - sg_limit;
		for_each_sg(sg, sg, sg_limit, i) {
			hpsa_set_sg_descriptor(curr_sg, sg);
			curr_sg++;
		}
	}

4338
	/* Back the pointer up to the last entry and mark it as "last". */
4339
	(curr_sg - 1)->Ext = cpu_to_le32(HPSA_SG_LAST);
4340 4341 4342 4343 4344 4345

	if (use_sg + chained > h->maxSG)
		h->maxSG = use_sg + chained;

	if (chained) {
		cp->Header.SGList = h->max_cmd_sg_entries;
4346
		cp->Header.SGTotal = cpu_to_le16(use_sg + 1);
4347 4348 4349 4350
		if (hpsa_map_sg_chain_block(h, cp)) {
			scsi_dma_unmap(cmd);
			return -1;
		}
4351
		return 0;
4352 4353 4354 4355
	}

sglist_finished:

4356
	cp->Header.SGList = (u8) use_sg;   /* no. SGs contig in this cmd */
4357
	cp->Header.SGTotal = cpu_to_le16(use_sg); /* total sgs in cmd list */
4358 4359 4360
	return 0;
}

4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375
#define IO_ACCEL_INELIGIBLE (1)
static int fixup_ioaccel_cdb(u8 *cdb, int *cdb_len)
{
	int is_write = 0;
	u32 block;
	u32 block_cnt;

	/* Perform some CDB fixups if needed using 10 byte reads/writes only */
	switch (cdb[0]) {
	case WRITE_6:
	case WRITE_12:
		is_write = 1;
	case READ_6:
	case READ_12:
		if (*cdb_len == 6) {
4376
			block = get_unaligned_be16(&cdb[2]);
4377
			block_cnt = cdb[4];
4378 4379
			if (block_cnt == 0)
				block_cnt = 256;
4380 4381
		} else {
			BUG_ON(*cdb_len != 12);
4382 4383
			block = get_unaligned_be32(&cdb[2]);
			block_cnt = get_unaligned_be32(&cdb[6]);
4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403
		}
		if (block_cnt > 0xffff)
			return IO_ACCEL_INELIGIBLE;

		cdb[0] = is_write ? WRITE_10 : READ_10;
		cdb[1] = 0;
		cdb[2] = (u8) (block >> 24);
		cdb[3] = (u8) (block >> 16);
		cdb[4] = (u8) (block >> 8);
		cdb[5] = (u8) (block);
		cdb[6] = 0;
		cdb[7] = (u8) (block_cnt >> 8);
		cdb[8] = (u8) (block_cnt);
		cdb[9] = 0;
		*cdb_len = 10;
		break;
	}
	return 0;
}

4404
static int hpsa_scsi_ioaccel1_queue_command(struct ctlr_info *h,
4405
	struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4406
	u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417
{
	struct scsi_cmnd *cmd = c->scsi_cmd;
	struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
	unsigned int len;
	unsigned int total_len = 0;
	struct scatterlist *sg;
	u64 addr64;
	int use_sg, i;
	struct SGDescriptor *curr_sg;
	u32 control = IOACCEL1_CONTROL_SIMPLEQUEUE;

4418
	/* TODO: implement chaining support */
4419 4420
	if (scsi_sg_count(cmd) > h->ioaccel_maxsg) {
		atomic_dec(&phys_disk->ioaccel_cmds_out);
4421
		return IO_ACCEL_INELIGIBLE;
4422
	}
4423

4424 4425
	BUG_ON(cmd->cmd_len > IOACCEL1_IOFLAGS_CDBLEN_MAX);

4426 4427
	if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
		atomic_dec(&phys_disk->ioaccel_cmds_out);
4428
		return IO_ACCEL_INELIGIBLE;
4429
	}
4430

4431 4432 4433 4434 4435 4436 4437 4438
	c->cmd_type = CMD_IOACCEL1;

	/* Adjust the DMA address to point to the accelerated command buffer */
	c->busaddr = (u32) h->ioaccel_cmd_pool_dhandle +
				(c->cmdindex * sizeof(*cp));
	BUG_ON(c->busaddr & 0x0000007F);

	use_sg = scsi_dma_map(cmd);
4439 4440
	if (use_sg < 0) {
		atomic_dec(&phys_disk->ioaccel_cmds_out);
4441
		return use_sg;
4442
	}
4443 4444 4445 4446 4447 4448 4449

	if (use_sg) {
		curr_sg = cp->SG;
		scsi_for_each_sg(cmd, sg, use_sg, i) {
			addr64 = (u64) sg_dma_address(sg);
			len  = sg_dma_len(sg);
			total_len += len;
4450 4451 4452
			curr_sg->Addr = cpu_to_le64(addr64);
			curr_sg->Len = cpu_to_le32(len);
			curr_sg->Ext = cpu_to_le32(0);
4453 4454
			curr_sg++;
		}
4455
		(--curr_sg)->Ext = cpu_to_le32(HPSA_SG_LAST);
4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476

		switch (cmd->sc_data_direction) {
		case DMA_TO_DEVICE:
			control |= IOACCEL1_CONTROL_DATA_OUT;
			break;
		case DMA_FROM_DEVICE:
			control |= IOACCEL1_CONTROL_DATA_IN;
			break;
		case DMA_NONE:
			control |= IOACCEL1_CONTROL_NODATAXFER;
			break;
		default:
			dev_err(&h->pdev->dev, "unknown data direction: %d\n",
			cmd->sc_data_direction);
			BUG();
			break;
		}
	} else {
		control |= IOACCEL1_CONTROL_NODATAXFER;
	}

4477
	c->Header.SGList = use_sg;
4478
	/* Fill out the command structure to submit */
D
Don Brace 已提交
4479 4480 4481 4482 4483
	cp->dev_handle = cpu_to_le16(ioaccel_handle & 0xFFFF);
	cp->transfer_len = cpu_to_le32(total_len);
	cp->io_flags = cpu_to_le16(IOACCEL1_IOFLAGS_IO_REQ |
			(cdb_len & IOACCEL1_IOFLAGS_CDBLEN_MASK));
	cp->control = cpu_to_le32(control);
4484 4485
	memcpy(cp->CDB, cdb, cdb_len);
	memcpy(cp->CISS_LUN, scsi3addr, 8);
4486
	/* Tag was already set at init time. */
4487
	enqueue_cmd_and_start_io(h, c);
4488 4489
	return 0;
}
4490

4491 4492 4493 4494 4495 4496 4497 4498 4499 4500
/*
 * Queue a command directly to a device behind the controller using the
 * I/O accelerator path.
 */
static int hpsa_scsi_ioaccel_direct_map(struct ctlr_info *h,
	struct CommandList *c)
{
	struct scsi_cmnd *cmd = c->scsi_cmd;
	struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;

4501 4502
	c->phys_disk = dev;

4503
	return hpsa_scsi_ioaccel_queue_command(h, c, dev->ioaccel_handle,
4504
		cmd->cmnd, cmd->cmd_len, dev->scsi3addr, dev);
4505 4506
}

4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518
/*
 * Set encryption parameters for the ioaccel2 request
 */
static void set_encrypt_ioaccel2(struct ctlr_info *h,
	struct CommandList *c, struct io_accel2_cmd *cp)
{
	struct scsi_cmnd *cmd = c->scsi_cmd;
	struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
	struct raid_map_data *map = &dev->raid_map;
	u64 first_block;

	/* Are we doing encryption on this device */
D
Don Brace 已提交
4519
	if (!(le16_to_cpu(map->flags) & RAID_MAP_FLAG_ENCRYPT_ON))
4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534
		return;
	/* Set the data encryption key index. */
	cp->dekindex = map->dekindex;

	/* Set the encryption enable flag, encoded into direction field. */
	cp->direction |= IOACCEL2_DIRECTION_ENCRYPT_MASK;

	/* Set encryption tweak values based on logical block address
	 * If block size is 512, tweak value is LBA.
	 * For other block sizes, tweak is (LBA * block size)/ 512)
	 */
	switch (cmd->cmnd[0]) {
	/* Required? 6-byte cdbs eliminated by fixup_ioaccel_cdb */
	case WRITE_6:
	case READ_6:
D
Don Brace 已提交
4535
		first_block = get_unaligned_be16(&cmd->cmnd[2]);
4536 4537 4538 4539 4540 4541
		break;
	case WRITE_10:
	case READ_10:
	/* Required? 12-byte cdbs eliminated by fixup_ioaccel_cdb */
	case WRITE_12:
	case READ_12:
D
Don Brace 已提交
4542
		first_block = get_unaligned_be32(&cmd->cmnd[2]);
4543 4544 4545
		break;
	case WRITE_16:
	case READ_16:
D
Don Brace 已提交
4546
		first_block = get_unaligned_be64(&cmd->cmnd[2]);
4547 4548 4549
		break;
	default:
		dev_err(&h->pdev->dev,
D
Don Brace 已提交
4550 4551
			"ERROR: %s: size (0x%x) not supported for encryption\n",
			__func__, cmd->cmnd[0]);
4552 4553 4554
		BUG();
		break;
	}
D
Don Brace 已提交
4555 4556 4557 4558 4559 4560 4561

	if (le32_to_cpu(map->volume_blk_size) != 512)
		first_block = first_block *
				le32_to_cpu(map->volume_blk_size)/512;

	cp->tweak_lower = cpu_to_le32(first_block);
	cp->tweak_upper = cpu_to_le32(first_block >> 32);
4562 4563
}

4564 4565
static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h,
	struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4566
	u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4567 4568 4569 4570 4571 4572 4573 4574 4575 4576
{
	struct scsi_cmnd *cmd = c->scsi_cmd;
	struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
	struct ioaccel2_sg_element *curr_sg;
	int use_sg, i;
	struct scatterlist *sg;
	u64 addr64;
	u32 len;
	u32 total_len = 0;

4577
	BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
4578

4579 4580
	if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
		atomic_dec(&phys_disk->ioaccel_cmds_out);
4581
		return IO_ACCEL_INELIGIBLE;
4582 4583
	}

4584 4585 4586 4587 4588 4589 4590 4591 4592 4593
	c->cmd_type = CMD_IOACCEL2;
	/* Adjust the DMA address to point to the accelerated command buffer */
	c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
				(c->cmdindex * sizeof(*cp));
	BUG_ON(c->busaddr & 0x0000007F);

	memset(cp, 0, sizeof(*cp));
	cp->IU_type = IOACCEL2_IU_TYPE;

	use_sg = scsi_dma_map(cmd);
4594 4595
	if (use_sg < 0) {
		atomic_dec(&phys_disk->ioaccel_cmds_out);
4596
		return use_sg;
4597
	}
4598 4599 4600

	if (use_sg) {
		curr_sg = cp->sg;
4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612
		if (use_sg > h->ioaccel_maxsg) {
			addr64 = le64_to_cpu(
				h->ioaccel2_cmd_sg_list[c->cmdindex]->address);
			curr_sg->address = cpu_to_le64(addr64);
			curr_sg->length = 0;
			curr_sg->reserved[0] = 0;
			curr_sg->reserved[1] = 0;
			curr_sg->reserved[2] = 0;
			curr_sg->chain_indicator = 0x80;

			curr_sg = h->ioaccel2_cmd_sg_list[c->cmdindex];
		}
4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627
		scsi_for_each_sg(cmd, sg, use_sg, i) {
			addr64 = (u64) sg_dma_address(sg);
			len  = sg_dma_len(sg);
			total_len += len;
			curr_sg->address = cpu_to_le64(addr64);
			curr_sg->length = cpu_to_le32(len);
			curr_sg->reserved[0] = 0;
			curr_sg->reserved[1] = 0;
			curr_sg->reserved[2] = 0;
			curr_sg->chain_indicator = 0;
			curr_sg++;
		}

		switch (cmd->sc_data_direction) {
		case DMA_TO_DEVICE:
4628 4629
			cp->direction &= ~IOACCEL2_DIRECTION_MASK;
			cp->direction |= IOACCEL2_DIR_DATA_OUT;
4630 4631
			break;
		case DMA_FROM_DEVICE:
4632 4633
			cp->direction &= ~IOACCEL2_DIRECTION_MASK;
			cp->direction |= IOACCEL2_DIR_DATA_IN;
4634 4635
			break;
		case DMA_NONE:
4636 4637
			cp->direction &= ~IOACCEL2_DIRECTION_MASK;
			cp->direction |= IOACCEL2_DIR_NO_DATA;
4638 4639 4640 4641 4642 4643 4644 4645
			break;
		default:
			dev_err(&h->pdev->dev, "unknown data direction: %d\n",
				cmd->sc_data_direction);
			BUG();
			break;
		}
	} else {
4646 4647
		cp->direction &= ~IOACCEL2_DIRECTION_MASK;
		cp->direction |= IOACCEL2_DIR_NO_DATA;
4648
	}
4649 4650 4651 4652

	/* Set encryption parameters, if necessary */
	set_encrypt_ioaccel2(h, c, cp);

D
Don Brace 已提交
4653
	cp->scsi_nexus = cpu_to_le32(ioaccel_handle);
4654
	cp->Tag = cpu_to_le32(c->cmdindex << DIRECT_LOOKUP_SHIFT);
4655 4656 4657 4658 4659
	memcpy(cp->cdb, cdb, sizeof(cp->cdb));

	cp->data_len = cpu_to_le32(total_len);
	cp->err_ptr = cpu_to_le64(c->busaddr +
			offsetof(struct io_accel2_cmd, error_data));
4660
	cp->err_len = cpu_to_le32(sizeof(cp->error_data));
4661

4662 4663 4664
	/* fill in sg elements */
	if (use_sg > h->ioaccel_maxsg) {
		cp->sg_count = 1;
D
Don Brace 已提交
4665
		cp->sg[0].length = cpu_to_le32(use_sg * sizeof(cp->sg[0]));
4666 4667 4668 4669 4670 4671 4672 4673
		if (hpsa_map_ioaccel2_sg_chain_block(h, cp, c)) {
			atomic_dec(&phys_disk->ioaccel_cmds_out);
			scsi_dma_unmap(cmd);
			return -1;
		}
	} else
		cp->sg_count = (u8) use_sg;

4674 4675 4676 4677 4678 4679 4680 4681 4682
	enqueue_cmd_and_start_io(h, c);
	return 0;
}

/*
 * Queue a command to the correct I/O accelerator path.
 */
static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
	struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4683
	u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4684
{
4685 4686 4687 4688 4689 4690
	/* Try to honor the device's queue depth */
	if (atomic_inc_return(&phys_disk->ioaccel_cmds_out) >
					phys_disk->queue_depth) {
		atomic_dec(&phys_disk->ioaccel_cmds_out);
		return IO_ACCEL_INELIGIBLE;
	}
4691 4692
	if (h->transMethod & CFGTBL_Trans_io_accel1)
		return hpsa_scsi_ioaccel1_queue_command(h, c, ioaccel_handle,
4693 4694
						cdb, cdb_len, scsi3addr,
						phys_disk);
4695 4696
	else
		return hpsa_scsi_ioaccel2_queue_command(h, c, ioaccel_handle,
4697 4698
						cdb, cdb_len, scsi3addr,
						phys_disk);
4699 4700
}

4701 4702 4703 4704 4705
static void raid_map_helper(struct raid_map_data *map,
		int offload_to_mirror, u32 *map_index, u32 *current_group)
{
	if (offload_to_mirror == 0)  {
		/* use physical disk in the first mirrored group. */
D
Don Brace 已提交
4706
		*map_index %= le16_to_cpu(map->data_disks_per_row);
4707 4708 4709 4710
		return;
	}
	do {
		/* determine mirror group that *map_index indicates */
D
Don Brace 已提交
4711 4712
		*current_group = *map_index /
			le16_to_cpu(map->data_disks_per_row);
4713 4714
		if (offload_to_mirror == *current_group)
			continue;
D
Don Brace 已提交
4715
		if (*current_group < le16_to_cpu(map->layout_map_count) - 1) {
4716
			/* select map index from next group */
D
Don Brace 已提交
4717
			*map_index += le16_to_cpu(map->data_disks_per_row);
4718 4719 4720
			(*current_group)++;
		} else {
			/* select map index from first group */
D
Don Brace 已提交
4721
			*map_index %= le16_to_cpu(map->data_disks_per_row);
4722 4723 4724 4725 4726
			*current_group = 0;
		}
	} while (offload_to_mirror != *current_group);
}

4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744
/*
 * Attempt to perform offload RAID mapping for a logical volume I/O.
 */
static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h,
	struct CommandList *c)
{
	struct scsi_cmnd *cmd = c->scsi_cmd;
	struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
	struct raid_map_data *map = &dev->raid_map;
	struct raid_map_disk_data *dd = &map->data[0];
	int is_write = 0;
	u32 map_index;
	u64 first_block, last_block;
	u32 block_cnt;
	u32 blocks_per_row;
	u64 first_row, last_row;
	u32 first_row_offset, last_row_offset;
	u32 first_column, last_column;
4745 4746 4747 4748 4749 4750 4751 4752
	u64 r0_first_row, r0_last_row;
	u32 r5or6_blocks_per_row;
	u64 r5or6_first_row, r5or6_last_row;
	u32 r5or6_first_row_offset, r5or6_last_row_offset;
	u32 r5or6_first_column, r5or6_last_column;
	u32 total_disks_per_row;
	u32 stripesize;
	u32 first_group, last_group, current_group;
4753 4754 4755 4756 4757 4758
	u32 map_row;
	u32 disk_handle;
	u64 disk_block;
	u32 disk_block_cnt;
	u8 cdb[16];
	u8 cdb_len;
D
Don Brace 已提交
4759
	u16 strip_size;
4760 4761 4762
#if BITS_PER_LONG == 32
	u64 tmpdiv;
#endif
4763
	int offload_to_mirror;
4764 4765 4766 4767 4768 4769

	/* check for valid opcode, get LBA and block count */
	switch (cmd->cmnd[0]) {
	case WRITE_6:
		is_write = 1;
	case READ_6:
4770
		first_block = get_unaligned_be16(&cmd->cmnd[2]);
4771
		block_cnt = cmd->cmnd[4];
4772 4773
		if (block_cnt == 0)
			block_cnt = 256;
4774 4775 4776 4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828
		break;
	case WRITE_10:
		is_write = 1;
	case READ_10:
		first_block =
			(((u64) cmd->cmnd[2]) << 24) |
			(((u64) cmd->cmnd[3]) << 16) |
			(((u64) cmd->cmnd[4]) << 8) |
			cmd->cmnd[5];
		block_cnt =
			(((u32) cmd->cmnd[7]) << 8) |
			cmd->cmnd[8];
		break;
	case WRITE_12:
		is_write = 1;
	case READ_12:
		first_block =
			(((u64) cmd->cmnd[2]) << 24) |
			(((u64) cmd->cmnd[3]) << 16) |
			(((u64) cmd->cmnd[4]) << 8) |
			cmd->cmnd[5];
		block_cnt =
			(((u32) cmd->cmnd[6]) << 24) |
			(((u32) cmd->cmnd[7]) << 16) |
			(((u32) cmd->cmnd[8]) << 8) |
		cmd->cmnd[9];
		break;
	case WRITE_16:
		is_write = 1;
	case READ_16:
		first_block =
			(((u64) cmd->cmnd[2]) << 56) |
			(((u64) cmd->cmnd[3]) << 48) |
			(((u64) cmd->cmnd[4]) << 40) |
			(((u64) cmd->cmnd[5]) << 32) |
			(((u64) cmd->cmnd[6]) << 24) |
			(((u64) cmd->cmnd[7]) << 16) |
			(((u64) cmd->cmnd[8]) << 8) |
			cmd->cmnd[9];
		block_cnt =
			(((u32) cmd->cmnd[10]) << 24) |
			(((u32) cmd->cmnd[11]) << 16) |
			(((u32) cmd->cmnd[12]) << 8) |
			cmd->cmnd[13];
		break;
	default:
		return IO_ACCEL_INELIGIBLE; /* process via normal I/O path */
	}
	last_block = first_block + block_cnt - 1;

	/* check for write to non-RAID-0 */
	if (is_write && dev->raid_level != 0)
		return IO_ACCEL_INELIGIBLE;

	/* check for invalid block or wraparound */
D
Don Brace 已提交
4829 4830
	if (last_block >= le64_to_cpu(map->volume_blk_cnt) ||
		last_block < first_block)
4831 4832 4833
		return IO_ACCEL_INELIGIBLE;

	/* calculate stripe information for the request */
D
Don Brace 已提交
4834 4835 4836
	blocks_per_row = le16_to_cpu(map->data_disks_per_row) *
				le16_to_cpu(map->strip_size);
	strip_size = le16_to_cpu(map->strip_size);
4837 4838 4839 4840 4841 4842 4843 4844 4845 4846
#if BITS_PER_LONG == 32
	tmpdiv = first_block;
	(void) do_div(tmpdiv, blocks_per_row);
	first_row = tmpdiv;
	tmpdiv = last_block;
	(void) do_div(tmpdiv, blocks_per_row);
	last_row = tmpdiv;
	first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
	last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
	tmpdiv = first_row_offset;
D
Don Brace 已提交
4847
	(void) do_div(tmpdiv, strip_size);
4848 4849
	first_column = tmpdiv;
	tmpdiv = last_row_offset;
D
Don Brace 已提交
4850
	(void) do_div(tmpdiv, strip_size);
4851 4852 4853 4854 4855 4856
	last_column = tmpdiv;
#else
	first_row = first_block / blocks_per_row;
	last_row = last_block / blocks_per_row;
	first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
	last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
D
Don Brace 已提交
4857 4858
	first_column = first_row_offset / strip_size;
	last_column = last_row_offset / strip_size;
4859 4860 4861 4862 4863 4864 4865
#endif

	/* if this isn't a single row/column then give to the controller */
	if ((first_row != last_row) || (first_column != last_column))
		return IO_ACCEL_INELIGIBLE;

	/* proceeding with driver mapping */
D
Don Brace 已提交
4866 4867
	total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
				le16_to_cpu(map->metadata_disks_per_row);
4868
	map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
D
Don Brace 已提交
4869
				le16_to_cpu(map->row_cnt);
4870 4871 4872 4873 4874 4875 4876 4877 4878
	map_index = (map_row * total_disks_per_row) + first_column;

	switch (dev->raid_level) {
	case HPSA_RAID_0:
		break; /* nothing special to do */
	case HPSA_RAID_1:
		/* Handles load balance across RAID 1 members.
		 * (2-drive R1 and R10 with even # of drives.)
		 * Appropriate for SSDs, not optimal for HDDs
4879
		 */
D
Don Brace 已提交
4880
		BUG_ON(le16_to_cpu(map->layout_map_count) != 2);
4881
		if (dev->offload_to_mirror)
D
Don Brace 已提交
4882
			map_index += le16_to_cpu(map->data_disks_per_row);
4883
		dev->offload_to_mirror = !dev->offload_to_mirror;
4884 4885 4886 4887 4888
		break;
	case HPSA_RAID_ADM:
		/* Handles N-way mirrors  (R1-ADM)
		 * and R10 with # of drives divisible by 3.)
		 */
D
Don Brace 已提交
4889
		BUG_ON(le16_to_cpu(map->layout_map_count) != 3);
4890 4891 4892 4893 4894 4895

		offload_to_mirror = dev->offload_to_mirror;
		raid_map_helper(map, offload_to_mirror,
				&map_index, &current_group);
		/* set mirror group to use next time */
		offload_to_mirror =
D
Don Brace 已提交
4896 4897
			(offload_to_mirror >=
			le16_to_cpu(map->layout_map_count) - 1)
4898 4899 4900 4901 4902 4903 4904 4905 4906
			? 0 : offload_to_mirror + 1;
		dev->offload_to_mirror = offload_to_mirror;
		/* Avoid direct use of dev->offload_to_mirror within this
		 * function since multiple threads might simultaneously
		 * increment it beyond the range of dev->layout_map_count -1.
		 */
		break;
	case HPSA_RAID_5:
	case HPSA_RAID_6:
D
Don Brace 已提交
4907
		if (le16_to_cpu(map->layout_map_count) <= 1)
4908 4909 4910 4911
			break;

		/* Verify first and last block are in same RAID group */
		r5or6_blocks_per_row =
D
Don Brace 已提交
4912 4913
			le16_to_cpu(map->strip_size) *
			le16_to_cpu(map->data_disks_per_row);
4914
		BUG_ON(r5or6_blocks_per_row == 0);
D
Don Brace 已提交
4915 4916
		stripesize = r5or6_blocks_per_row *
			le16_to_cpu(map->layout_map_count);
4917 4918 4919 4920 4921 4922 4923 4924 4925 4926 4927 4928 4929 4930 4931
#if BITS_PER_LONG == 32
		tmpdiv = first_block;
		first_group = do_div(tmpdiv, stripesize);
		tmpdiv = first_group;
		(void) do_div(tmpdiv, r5or6_blocks_per_row);
		first_group = tmpdiv;
		tmpdiv = last_block;
		last_group = do_div(tmpdiv, stripesize);
		tmpdiv = last_group;
		(void) do_div(tmpdiv, r5or6_blocks_per_row);
		last_group = tmpdiv;
#else
		first_group = (first_block % stripesize) / r5or6_blocks_per_row;
		last_group = (last_block % stripesize) / r5or6_blocks_per_row;
#endif
4932
		if (first_group != last_group)
4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964 4965 4966 4967 4968 4969 4970 4971 4972 4973 4974 4975 4976 4977 4978
			return IO_ACCEL_INELIGIBLE;

		/* Verify request is in a single row of RAID 5/6 */
#if BITS_PER_LONG == 32
		tmpdiv = first_block;
		(void) do_div(tmpdiv, stripesize);
		first_row = r5or6_first_row = r0_first_row = tmpdiv;
		tmpdiv = last_block;
		(void) do_div(tmpdiv, stripesize);
		r5or6_last_row = r0_last_row = tmpdiv;
#else
		first_row = r5or6_first_row = r0_first_row =
						first_block / stripesize;
		r5or6_last_row = r0_last_row = last_block / stripesize;
#endif
		if (r5or6_first_row != r5or6_last_row)
			return IO_ACCEL_INELIGIBLE;


		/* Verify request is in a single column */
#if BITS_PER_LONG == 32
		tmpdiv = first_block;
		first_row_offset = do_div(tmpdiv, stripesize);
		tmpdiv = first_row_offset;
		first_row_offset = (u32) do_div(tmpdiv, r5or6_blocks_per_row);
		r5or6_first_row_offset = first_row_offset;
		tmpdiv = last_block;
		r5or6_last_row_offset = do_div(tmpdiv, stripesize);
		tmpdiv = r5or6_last_row_offset;
		r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
		tmpdiv = r5or6_first_row_offset;
		(void) do_div(tmpdiv, map->strip_size);
		first_column = r5or6_first_column = tmpdiv;
		tmpdiv = r5or6_last_row_offset;
		(void) do_div(tmpdiv, map->strip_size);
		r5or6_last_column = tmpdiv;
#else
		first_row_offset = r5or6_first_row_offset =
			(u32)((first_block % stripesize) %
						r5or6_blocks_per_row);

		r5or6_last_row_offset =
			(u32)((last_block % stripesize) %
						r5or6_blocks_per_row);

		first_column = r5or6_first_column =
D
Don Brace 已提交
4979
			r5or6_first_row_offset / le16_to_cpu(map->strip_size);
4980
		r5or6_last_column =
D
Don Brace 已提交
4981
			r5or6_last_row_offset / le16_to_cpu(map->strip_size);
4982 4983 4984 4985 4986 4987
#endif
		if (r5or6_first_column != r5or6_last_column)
			return IO_ACCEL_INELIGIBLE;

		/* Request is eligible */
		map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
D
Don Brace 已提交
4988
			le16_to_cpu(map->row_cnt);
4989 4990

		map_index = (first_group *
D
Don Brace 已提交
4991
			(le16_to_cpu(map->row_cnt) * total_disks_per_row)) +
4992 4993 4994 4995
			(map_row * total_disks_per_row) + first_column;
		break;
	default:
		return IO_ACCEL_INELIGIBLE;
4996
	}
4997

4998 4999 5000
	if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES))
		return IO_ACCEL_INELIGIBLE;

5001
	c->phys_disk = dev->phys_disk[map_index];
5002 5003
	if (!c->phys_disk)
		return IO_ACCEL_INELIGIBLE;
5004

5005
	disk_handle = dd[map_index].ioaccel_handle;
D
Don Brace 已提交
5006 5007 5008 5009
	disk_block = le64_to_cpu(map->disk_starting_blk) +
			first_row * le16_to_cpu(map->strip_size) +
			(first_row_offset - first_column *
			le16_to_cpu(map->strip_size));
5010 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 5030 5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042 5043 5044 5045 5046 5047 5048 5049 5050 5051
	disk_block_cnt = block_cnt;

	/* handle differing logical/physical block sizes */
	if (map->phys_blk_shift) {
		disk_block <<= map->phys_blk_shift;
		disk_block_cnt <<= map->phys_blk_shift;
	}
	BUG_ON(disk_block_cnt > 0xffff);

	/* build the new CDB for the physical disk I/O */
	if (disk_block > 0xffffffff) {
		cdb[0] = is_write ? WRITE_16 : READ_16;
		cdb[1] = 0;
		cdb[2] = (u8) (disk_block >> 56);
		cdb[3] = (u8) (disk_block >> 48);
		cdb[4] = (u8) (disk_block >> 40);
		cdb[5] = (u8) (disk_block >> 32);
		cdb[6] = (u8) (disk_block >> 24);
		cdb[7] = (u8) (disk_block >> 16);
		cdb[8] = (u8) (disk_block >> 8);
		cdb[9] = (u8) (disk_block);
		cdb[10] = (u8) (disk_block_cnt >> 24);
		cdb[11] = (u8) (disk_block_cnt >> 16);
		cdb[12] = (u8) (disk_block_cnt >> 8);
		cdb[13] = (u8) (disk_block_cnt);
		cdb[14] = 0;
		cdb[15] = 0;
		cdb_len = 16;
	} else {
		cdb[0] = is_write ? WRITE_10 : READ_10;
		cdb[1] = 0;
		cdb[2] = (u8) (disk_block >> 24);
		cdb[3] = (u8) (disk_block >> 16);
		cdb[4] = (u8) (disk_block >> 8);
		cdb[5] = (u8) (disk_block);
		cdb[6] = 0;
		cdb[7] = (u8) (disk_block_cnt >> 8);
		cdb[8] = (u8) (disk_block_cnt);
		cdb[9] = 0;
		cdb_len = 10;
	}
	return hpsa_scsi_ioaccel_queue_command(h, c, disk_handle, cdb, cdb_len,
5052 5053
						dev->scsi3addr,
						dev->phys_disk[map_index]);
5054 5055
}

5056 5057 5058 5059 5060
/*
 * Submit commands down the "normal" RAID stack path
 * All callers to hpsa_ciss_submit must check lockup_detected
 * beforehand, before (opt.) and after calling cmd_alloc
 */
5061 5062 5063
static int hpsa_ciss_submit(struct ctlr_info *h,
	struct CommandList *c, struct scsi_cmnd *cmd,
	unsigned char scsi3addr[])
5064 5065 5066 5067 5068 5069
{
	cmd->host_scribble = (unsigned char *) c;
	c->cmd_type = CMD_SCSI;
	c->scsi_cmd = cmd;
	c->Header.ReplyQueue = 0;  /* unused in simple mode */
	memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8);
5070
	c->Header.tag = cpu_to_le64((c->cmdindex << DIRECT_LOOKUP_SHIFT));
5071 5072 5073 5074 5075 5076 5077 5078 5079

	/* Fill in the request block... */

	c->Request.Timeout = 0;
	BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB));
	c->Request.CDBLen = cmd->cmd_len;
	memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len);
	switch (cmd->sc_data_direction) {
	case DMA_TO_DEVICE:
5080 5081
		c->Request.type_attr_dir =
			TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_WRITE);
5082 5083
		break;
	case DMA_FROM_DEVICE:
5084 5085
		c->Request.type_attr_dir =
			TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_READ);
5086 5087
		break;
	case DMA_NONE:
5088 5089
		c->Request.type_attr_dir =
			TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_NONE);
5090 5091 5092 5093 5094 5095 5096
		break;
	case DMA_BIDIRECTIONAL:
		/* This can happen if a buggy application does a scsi passthru
		 * and sets both inlen and outlen to non-zero. ( see
		 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
		 */

5097 5098
		c->Request.type_attr_dir =
			TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_RSVD);
5099 5100 5101 5102 5103 5104 5105 5106 5107 5108 5109 5110 5111 5112 5113 5114 5115
		/* This is technically wrong, and hpsa controllers should
		 * reject it with CMD_INVALID, which is the most correct
		 * response, but non-fibre backends appear to let it
		 * slide by, and give the same results as if this field
		 * were set correctly.  Either way is acceptable for
		 * our purposes here.
		 */

		break;

	default:
		dev_err(&h->pdev->dev, "unknown data direction: %d\n",
			cmd->sc_data_direction);
		BUG();
		break;
	}

5116
	if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */
5117
		hpsa_cmd_resolve_and_free(h, c);
5118 5119 5120 5121 5122 5123 5124
		return SCSI_MLQUEUE_HOST_BUSY;
	}
	enqueue_cmd_and_start_io(h, c);
	/* the cmd'll come back via intr handler in complete_scsi_command()  */
	return 0;
}

5125 5126 5127 5128 5129 5130 5131 5132 5133 5134 5135 5136 5137 5138 5139 5140 5141 5142
static void hpsa_cmd_init(struct ctlr_info *h, int index,
				struct CommandList *c)
{
	dma_addr_t cmd_dma_handle, err_dma_handle;

	/* Zero out all of commandlist except the last field, refcount */
	memset(c, 0, offsetof(struct CommandList, refcount));
	c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT));
	cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
	c->err_info = h->errinfo_pool + index;
	memset(c->err_info, 0, sizeof(*c->err_info));
	err_dma_handle = h->errinfo_pool_dhandle
	    + index * sizeof(*c->err_info);
	c->cmdindex = index;
	c->busaddr = (u32) cmd_dma_handle;
	c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle);
	c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info));
	c->h = h;
5143
	c->scsi_cmd = SCSI_CMD_IDLE;
5144 5145 5146 5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162
}

static void hpsa_preinitialize_commands(struct ctlr_info *h)
{
	int i;

	for (i = 0; i < h->nr_cmds; i++) {
		struct CommandList *c = h->cmd_pool + i;

		hpsa_cmd_init(h, i, c);
		atomic_set(&c->refcount, 0);
	}
}

static inline void hpsa_cmd_partial_init(struct ctlr_info *h, int index,
				struct CommandList *c)
{
	dma_addr_t cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);

5163 5164
	BUG_ON(c->cmdindex != index);

5165 5166 5167 5168 5169
	memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
	memset(c->err_info, 0, sizeof(*c->err_info));
	c->busaddr = (u32) cmd_dma_handle;
}

5170 5171 5172 5173 5174 5175 5176 5177 5178 5179 5180 5181 5182 5183 5184 5185
static int hpsa_ioaccel_submit(struct ctlr_info *h,
		struct CommandList *c, struct scsi_cmnd *cmd,
		unsigned char *scsi3addr)
{
	struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
	int rc = IO_ACCEL_INELIGIBLE;

	cmd->host_scribble = (unsigned char *) c;

	if (dev->offload_enabled) {
		hpsa_cmd_init(h, c->cmdindex, c);
		c->cmd_type = CMD_SCSI;
		c->scsi_cmd = cmd;
		rc = hpsa_scsi_ioaccel_raid_map(h, c);
		if (rc < 0)     /* scsi_dma_map failed. */
			rc = SCSI_MLQUEUE_HOST_BUSY;
5186
	} else if (dev->hba_ioaccel_enabled) {
5187 5188 5189 5190 5191 5192 5193 5194 5195 5196
		hpsa_cmd_init(h, c->cmdindex, c);
		c->cmd_type = CMD_SCSI;
		c->scsi_cmd = cmd;
		rc = hpsa_scsi_ioaccel_direct_map(h, c);
		if (rc < 0)     /* scsi_dma_map failed. */
			rc = SCSI_MLQUEUE_HOST_BUSY;
	}
	return rc;
}

5197 5198 5199 5200
static void hpsa_command_resubmit_worker(struct work_struct *work)
{
	struct scsi_cmnd *cmd;
	struct hpsa_scsi_dev_t *dev;
5201
	struct CommandList *c = container_of(work, struct CommandList, work);
5202 5203 5204 5205 5206

	cmd = c->scsi_cmd;
	dev = cmd->device->hostdata;
	if (!dev) {
		cmd->result = DID_NO_CONNECT << 16;
5207
		return hpsa_cmd_free_and_done(c->h, c, cmd);
5208
	}
W
Webb Scales 已提交
5209 5210
	if (c->reset_pending)
		return hpsa_cmd_resolve_and_free(c->h, c);
5211 5212
	if (c->abort_pending)
		return hpsa_cmd_abort_and_free(c->h, c, cmd);
5213 5214 5215 5216 5217 5218 5219 5220 5221 5222 5223 5224 5225 5226 5227 5228 5229
	if (c->cmd_type == CMD_IOACCEL2) {
		struct ctlr_info *h = c->h;
		struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
		int rc;

		if (c2->error_data.serv_response ==
				IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL) {
			rc = hpsa_ioaccel_submit(h, c, cmd, dev->scsi3addr);
			if (rc == 0)
				return;
			if (rc == SCSI_MLQUEUE_HOST_BUSY) {
				/*
				 * If we get here, it means dma mapping failed.
				 * Try again via scsi mid layer, which will
				 * then get SCSI_MLQUEUE_HOST_BUSY.
				 */
				cmd->result = DID_IMM_RETRY << 16;
5230
				return hpsa_cmd_free_and_done(h, c, cmd);
5231 5232 5233 5234
			}
			/* else, fall thru and resubmit down CISS path */
		}
	}
5235
	hpsa_cmd_partial_init(c->h, c->cmdindex, c);
5236 5237 5238 5239 5240
	if (hpsa_ciss_submit(c->h, c, cmd, dev->scsi3addr)) {
		/*
		 * If we get here, it means dma mapping failed. Try
		 * again via scsi mid layer, which will then get
		 * SCSI_MLQUEUE_HOST_BUSY.
5241 5242 5243
		 *
		 * hpsa_ciss_submit will have already freed c
		 * if it encountered a dma mapping failure.
5244 5245 5246 5247 5248 5249
		 */
		cmd->result = DID_IMM_RETRY << 16;
		cmd->scsi_done(cmd);
	}
}

5250 5251 5252 5253 5254 5255 5256 5257 5258 5259 5260
/* Running in struct Scsi_Host->host_lock less mode */
static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
{
	struct ctlr_info *h;
	struct hpsa_scsi_dev_t *dev;
	unsigned char scsi3addr[8];
	struct CommandList *c;
	int rc = 0;

	/* Get the ptr to our adapter structure out of cmd->host. */
	h = sdev_to_hba(cmd->device);
5261 5262 5263

	BUG_ON(cmd->request->tag < 0);

5264 5265 5266 5267 5268 5269 5270
	dev = cmd->device->hostdata;
	if (!dev) {
		cmd->result = DID_NO_CONNECT << 16;
		cmd->scsi_done(cmd);
		return 0;
	}

5271
	memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr));
5272

5273
	if (unlikely(lockup_detected(h))) {
5274
		cmd->result = DID_NO_CONNECT << 16;
5275 5276 5277
		cmd->scsi_done(cmd);
		return 0;
	}
5278
	c = cmd_tagged_alloc(h, cmd);
5279

5280 5281
	/*
	 * Call alternate submit routine for I/O accelerated commands.
5282 5283 5284 5285 5286
	 * Retries always go down the normal I/O path.
	 */
	if (likely(cmd->retries == 0 &&
		cmd->request->cmd_type == REQ_TYPE_FS &&
		h->acciopath_status)) {
5287 5288 5289 5290
		rc = hpsa_ioaccel_submit(h, c, cmd, scsi3addr);
		if (rc == 0)
			return 0;
		if (rc == SCSI_MLQUEUE_HOST_BUSY) {
5291
			hpsa_cmd_resolve_and_free(h, c);
5292
			return SCSI_MLQUEUE_HOST_BUSY;
5293 5294 5295 5296 5297
		}
	}
	return hpsa_ciss_submit(h, c, cmd, scsi3addr);
}

5298
static void hpsa_scan_complete(struct ctlr_info *h)
5299 5300 5301
{
	unsigned long flags;

5302 5303 5304 5305
	spin_lock_irqsave(&h->scan_lock, flags);
	h->scan_finished = 1;
	wake_up_all(&h->scan_wait_queue);
	spin_unlock_irqrestore(&h->scan_lock, flags);
5306 5307
}

5308 5309 5310 5311 5312
static void hpsa_scan_start(struct Scsi_Host *sh)
{
	struct ctlr_info *h = shost_to_hba(sh);
	unsigned long flags;

5313 5314 5315 5316 5317 5318 5319 5320
	/*
	 * Don't let rescans be initiated on a controller known to be locked
	 * up.  If the controller locks up *during* a rescan, that thread is
	 * probably hosed, but at least we can prevent new rescan threads from
	 * piling up on a locked up controller.
	 */
	if (unlikely(lockup_detected(h)))
		return hpsa_scan_complete(h);
5321

5322 5323 5324 5325 5326 5327 5328 5329 5330 5331 5332 5333 5334 5335 5336 5337
	/* wait until any scan already in progress is finished. */
	while (1) {
		spin_lock_irqsave(&h->scan_lock, flags);
		if (h->scan_finished)
			break;
		spin_unlock_irqrestore(&h->scan_lock, flags);
		wait_event(h->scan_wait_queue, h->scan_finished);
		/* Note: We don't need to worry about a race between this
		 * thread and driver unload because the midlayer will
		 * have incremented the reference count, so unload won't
		 * happen if we're in here.
		 */
	}
	h->scan_finished = 0; /* mark scan as in progress */
	spin_unlock_irqrestore(&h->scan_lock, flags);

5338 5339
	if (unlikely(lockup_detected(h)))
		return hpsa_scan_complete(h);
5340

D
Don Brace 已提交
5341
	hpsa_update_scsi_devices(h);
5342

5343
	hpsa_scan_complete(h);
5344 5345
}

D
Don Brace 已提交
5346 5347
static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth)
{
5348 5349 5350 5351
	struct hpsa_scsi_dev_t *logical_drive = sdev->hostdata;

	if (!logical_drive)
		return -ENODEV;
D
Don Brace 已提交
5352 5353 5354

	if (qdepth < 1)
		qdepth = 1;
5355 5356 5357 5358
	else if (qdepth > logical_drive->queue_depth)
		qdepth = logical_drive->queue_depth;

	return scsi_change_queue_depth(sdev, qdepth);
D
Don Brace 已提交
5359 5360
}

5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373
static int hpsa_scan_finished(struct Scsi_Host *sh,
	unsigned long elapsed_time)
{
	struct ctlr_info *h = shost_to_hba(sh);
	unsigned long flags;
	int finished;

	spin_lock_irqsave(&h->scan_lock, flags);
	finished = h->scan_finished;
	spin_unlock_irqrestore(&h->scan_lock, flags);
	return finished;
}

5374
static int hpsa_scsi_host_alloc(struct ctlr_info *h)
5375
{
5376
	struct Scsi_Host *sh;
5377

5378
	sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h));
5379 5380 5381 5382
	if (sh == NULL) {
		dev_err(&h->pdev->dev, "scsi_host_alloc failed\n");
		return -ENOMEM;
	}
5383 5384 5385 5386 5387 5388 5389 5390

	sh->io_port = 0;
	sh->n_io_port = 0;
	sh->this_id = -1;
	sh->max_channel = 3;
	sh->max_cmd_len = MAX_COMMAND_SIZE;
	sh->max_lun = HPSA_MAX_LUN;
	sh->max_id = HPSA_MAX_LUN;
5391
	sh->can_queue = h->nr_cmds - HPSA_NRESERVED_CMDS;
5392
	sh->cmd_per_lun = sh->can_queue;
5393
	sh->sg_tablesize = h->maxsgentries;
K
Kevin Barnett 已提交
5394
	sh->transportt = hpsa_sas_transport_template;
5395 5396 5397
	sh->hostdata[0] = (unsigned long) h;
	sh->irq = h->intr[h->intr_mode];
	sh->unique_id = sh->irq;
5398

5399
	h->scsi_host = sh;
5400
	return 0;
5401
}
5402

5403 5404 5405 5406 5407 5408 5409 5410 5411 5412 5413
static int hpsa_scsi_add_host(struct ctlr_info *h)
{
	int rv;

	rv = scsi_add_host(h->scsi_host, &h->pdev->dev);
	if (rv) {
		dev_err(&h->pdev->dev, "scsi_add_host failed\n");
		return rv;
	}
	scsi_scan_host(h->scsi_host);
	return 0;
5414 5415
}

5416 5417 5418 5419 5420 5421 5422 5423 5424 5425 5426 5427 5428 5429 5430 5431 5432
/*
 * The block layer has already gone to the trouble of picking out a unique,
 * small-integer tag for this request.  We use an offset from that value as
 * an index to select our command block.  (The offset allows us to reserve the
 * low-numbered entries for our own uses.)
 */
static int hpsa_get_cmd_index(struct scsi_cmnd *scmd)
{
	int idx = scmd->request->tag;

	if (idx < 0)
		return idx;

	/* Offset to leave space for internal cmds. */
	return idx += HPSA_NRESERVED_CMDS;
}

5433 5434 5435 5436 5437 5438 5439 5440 5441 5442 5443 5444 5445
/*
 * Send a TEST_UNIT_READY command to the specified LUN using the specified
 * reply queue; returns zero if the unit is ready, and non-zero otherwise.
 */
static int hpsa_send_test_unit_ready(struct ctlr_info *h,
				struct CommandList *c, unsigned char lunaddr[],
				int reply_queue)
{
	int rc;

	/* Send the Test Unit Ready, fill_cmd can't fail, no mapping */
	(void) fill_cmd(c, TEST_UNIT_READY, h,
			NULL, 0, 0, lunaddr, TYPE_CMD);
5446
	rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, DEFAULT_TIMEOUT);
5447 5448 5449 5450 5451 5452 5453 5454 5455 5456 5457 5458 5459 5460 5461 5462 5463 5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474 5475
	if (rc)
		return rc;
	/* no unmap needed here because no data xfer. */

	/* Check if the unit is already ready. */
	if (c->err_info->CommandStatus == CMD_SUCCESS)
		return 0;

	/*
	 * The first command sent after reset will receive "unit attention" to
	 * indicate that the LUN has been reset...this is actually what we're
	 * looking for (but, success is good too).
	 */
	if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
		c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
			(c->err_info->SenseInfo[2] == NO_SENSE ||
			 c->err_info->SenseInfo[2] == UNIT_ATTENTION))
		return 0;

	return 1;
}

/*
 * Wait for a TEST_UNIT_READY command to complete, retrying as necessary;
 * returns zero when the unit is ready, and non-zero when giving up.
 */
static int hpsa_wait_for_test_unit_ready(struct ctlr_info *h,
				struct CommandList *c,
				unsigned char lunaddr[], int reply_queue)
5476
{
5477
	int rc;
5478 5479 5480 5481
	int count = 0;
	int waittime = 1; /* seconds */

	/* Send test unit ready until device ready, or give up. */
5482
	for (count = 0; count < HPSA_TUR_RETRY_LIMIT; count++) {
5483

5484 5485
		/*
		 * Wait for a bit.  do this first, because if we send
5486 5487 5488
		 * the TUR right away, the reset will just abort it.
		 */
		msleep(1000 * waittime);
5489 5490 5491 5492

		rc = hpsa_send_test_unit_ready(h, c, lunaddr, reply_queue);
		if (!rc)
			break;
5493 5494 5495

		/* Increase wait time with each try, up to a point. */
		if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS)
5496
			waittime *= 2;
5497

5498 5499 5500 5501
		dev_warn(&h->pdev->dev,
			 "waiting %d secs for device to become ready.\n",
			 waittime);
	}
5502

5503 5504
	return rc;
}
5505

5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521 5522 5523 5524 5525 5526 5527 5528 5529 5530 5531 5532 5533
static int wait_for_device_to_become_ready(struct ctlr_info *h,
					   unsigned char lunaddr[],
					   int reply_queue)
{
	int first_queue;
	int last_queue;
	int rq;
	int rc = 0;
	struct CommandList *c;

	c = cmd_alloc(h);

	/*
	 * If no specific reply queue was requested, then send the TUR
	 * repeatedly, requesting a reply on each reply queue; otherwise execute
	 * the loop exactly once using only the specified queue.
	 */
	if (reply_queue == DEFAULT_REPLY_QUEUE) {
		first_queue = 0;
		last_queue = h->nreply_queues - 1;
	} else {
		first_queue = reply_queue;
		last_queue = reply_queue;
	}

	for (rq = first_queue; rq <= last_queue; rq++) {
		rc = hpsa_wait_for_test_unit_ready(h, c, lunaddr, rq);
		if (rc)
5534 5535 5536 5537 5538 5539 5540 5541
			break;
	}

	if (rc)
		dev_warn(&h->pdev->dev, "giving up on device.\n");
	else
		dev_warn(&h->pdev->dev, "device is ready.\n");

5542
	cmd_free(h, c);
5543 5544 5545 5546 5547 5548 5549 5550 5551 5552 5553
	return rc;
}

/* Need at least one of these error handlers to keep ../scsi/hosts.c from
 * complaining.  Doing a host- or bus-reset can't do anything good here.
 */
static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
{
	int rc;
	struct ctlr_info *h;
	struct hpsa_scsi_dev_t *dev;
S
Scott Teel 已提交
5554
	u8 reset_type;
5555
	char msg[48];
5556 5557 5558 5559 5560

	/* find the controller to which the command to be aborted was sent */
	h = sdev_to_hba(scsicmd->device);
	if (h == NULL) /* paranoia */
		return FAILED;
5561 5562 5563 5564

	if (lockup_detected(h))
		return FAILED;

5565 5566
	dev = scsicmd->device->hostdata;
	if (!dev) {
W
Webb Scales 已提交
5567
		dev_err(&h->pdev->dev, "%s: device lookup failed\n", __func__);
5568 5569
		return FAILED;
	}
5570 5571 5572

	/* if controller locked up, we can guarantee command won't complete */
	if (lockup_detected(h)) {
5573 5574 5575
		snprintf(msg, sizeof(msg),
			 "cmd %d RESET FAILED, lockup detected",
			 hpsa_get_cmd_index(scsicmd));
5576
		hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5577 5578 5579 5580 5581
		return FAILED;
	}

	/* this reset request might be the result of a lockup; check */
	if (detect_controller_lockup(h)) {
5582 5583 5584
		snprintf(msg, sizeof(msg),
			 "cmd %d RESET FAILED, new lockup detected",
			 hpsa_get_cmd_index(scsicmd));
5585
		hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5586 5587 5588
		return FAILED;
	}

W
Webb Scales 已提交
5589 5590 5591 5592
	/* Do not attempt on controller */
	if (is_hba_lunid(dev->scsi3addr))
		return SUCCESS;

S
Scott Teel 已提交
5593 5594 5595 5596 5597 5598 5599 5600
	if (is_logical_dev_addr_mode(dev->scsi3addr))
		reset_type = HPSA_DEVICE_RESET_MSG;
	else
		reset_type = HPSA_PHYS_TARGET_RESET;

	sprintf(msg, "resetting %s",
		reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ");
	hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5601

D
Don Brace 已提交
5602
	h->reset_in_progress = 1;
5603

5604
	/* send a reset to the SCSI LUN which the command was sent to */
S
Scott Teel 已提交
5605
	rc = hpsa_do_reset(h, dev, dev->scsi3addr, reset_type,
W
Webb Scales 已提交
5606
			   DEFAULT_REPLY_QUEUE);
S
Scott Teel 已提交
5607 5608 5609
	sprintf(msg, "reset %s %s",
		reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ",
		rc == 0 ? "completed successfully" : "failed");
W
Webb Scales 已提交
5610
	hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
D
Don Brace 已提交
5611
	h->reset_in_progress = 0;
W
Webb Scales 已提交
5612
	return rc == 0 ? SUCCESS : FAILED;
5613 5614
}

5615 5616 5617 5618 5619 5620 5621 5622 5623 5624 5625 5626 5627 5628 5629
static void swizzle_abort_tag(u8 *tag)
{
	u8 original_tag[8];

	memcpy(original_tag, tag, 8);
	tag[0] = original_tag[3];
	tag[1] = original_tag[2];
	tag[2] = original_tag[1];
	tag[3] = original_tag[0];
	tag[4] = original_tag[7];
	tag[5] = original_tag[6];
	tag[6] = original_tag[5];
	tag[7] = original_tag[4];
}

5630
static void hpsa_get_tag(struct ctlr_info *h,
D
Don Brace 已提交
5631
	struct CommandList *c, __le32 *taglower, __le32 *tagupper)
5632
{
D
Don Brace 已提交
5633
	u64 tag;
5634 5635 5636
	if (c->cmd_type == CMD_IOACCEL1) {
		struct io_accel1_cmd *cm1 = (struct io_accel1_cmd *)
			&h->ioaccel_cmd_pool[c->cmdindex];
D
Don Brace 已提交
5637 5638 5639
		tag = le64_to_cpu(cm1->tag);
		*tagupper = cpu_to_le32(tag >> 32);
		*taglower = cpu_to_le32(tag);
5640 5641 5642 5643 5644
		return;
	}
	if (c->cmd_type == CMD_IOACCEL2) {
		struct io_accel2_cmd *cm2 = (struct io_accel2_cmd *)
			&h->ioaccel2_cmd_pool[c->cmdindex];
5645 5646 5647
		/* upper tag not used in ioaccel2 mode */
		memset(tagupper, 0, sizeof(*tagupper));
		*taglower = cm2->Tag;
5648
		return;
5649
	}
D
Don Brace 已提交
5650 5651 5652
	tag = le64_to_cpu(c->Header.tag);
	*tagupper = cpu_to_le32(tag >> 32);
	*taglower = cpu_to_le32(tag);
5653 5654
}

5655
static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr,
S
Stephen Cameron 已提交
5656
	struct CommandList *abort, int reply_queue)
5657 5658 5659 5660
{
	int rc = IO_OK;
	struct CommandList *c;
	struct ErrorInfo *ei;
D
Don Brace 已提交
5661
	__le32 tagupper, taglower;
5662

5663
	c = cmd_alloc(h);
5664

5665
	/* fill_cmd can't fail here, no buffer to map */
S
Stephen Cameron 已提交
5666
	(void) fill_cmd(c, HPSA_ABORT_MSG, h, &abort->Header.tag,
5667
		0, 0, scsi3addr, TYPE_MSG);
S
Stephen Cameron 已提交
5668
	if (h->needs_abort_tags_swizzled)
5669
		swizzle_abort_tag(&c->Request.CDB[4]);
5670
	(void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, DEFAULT_TIMEOUT);
5671
	hpsa_get_tag(h, abort, &taglower, &tagupper);
5672
	dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: do_simple_cmd(abort) completed.\n",
5673
		__func__, tagupper, taglower);
5674 5675 5676 5677 5678 5679
	/* no unmap needed here because no data xfer. */

	ei = c->err_info;
	switch (ei->CommandStatus) {
	case CMD_SUCCESS:
		break;
5680 5681 5682
	case CMD_TMF_STATUS:
		rc = hpsa_evaluate_tmf_status(h, c);
		break;
5683 5684 5685 5686 5687
	case CMD_UNABORTABLE: /* Very common, don't make noise. */
		rc = -1;
		break;
	default:
		dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: interpreting error.\n",
5688
			__func__, tagupper, taglower);
5689
		hpsa_scsi_interpret_error(h, c);
5690 5691 5692
		rc = -1;
		break;
	}
5693
	cmd_free(h, c);
5694 5695
	dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n",
		__func__, tagupper, taglower);
5696 5697 5698
	return rc;
}

5699 5700 5701 5702 5703 5704 5705
static void setup_ioaccel2_abort_cmd(struct CommandList *c, struct ctlr_info *h,
	struct CommandList *command_to_abort, int reply_queue)
{
	struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
	struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
	struct io_accel2_cmd *c2a =
		&h->ioaccel2_cmd_pool[command_to_abort->cmdindex];
5706
	struct scsi_cmnd *scmd = command_to_abort->scsi_cmd;
5707 5708 5709 5710 5711 5712 5713 5714 5715 5716 5717 5718 5719 5720
	struct hpsa_scsi_dev_t *dev = scmd->device->hostdata;

	/*
	 * We're overlaying struct hpsa_tmf_struct on top of something which
	 * was allocated as a struct io_accel2_cmd, so we better be sure it
	 * actually fits, and doesn't overrun the error info space.
	 */
	BUILD_BUG_ON(sizeof(struct hpsa_tmf_struct) >
			sizeof(struct io_accel2_cmd));
	BUG_ON(offsetof(struct io_accel2_cmd, error_data) <
			offsetof(struct hpsa_tmf_struct, error_len) +
				sizeof(ac->error_len));

	c->cmd_type = IOACCEL2_TMF;
5721 5722
	c->scsi_cmd = SCSI_CMD_BUSY;

5723 5724 5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736 5737 5738 5739 5740
	/* Adjust the DMA address to point to the accelerated command buffer */
	c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
				(c->cmdindex * sizeof(struct io_accel2_cmd));
	BUG_ON(c->busaddr & 0x0000007F);

	memset(ac, 0, sizeof(*c2)); /* yes this is correct */
	ac->iu_type = IOACCEL2_IU_TMF_TYPE;
	ac->reply_queue = reply_queue;
	ac->tmf = IOACCEL2_TMF_ABORT;
	ac->it_nexus = cpu_to_le32(dev->ioaccel_handle);
	memset(ac->lun_id, 0, sizeof(ac->lun_id));
	ac->tag = cpu_to_le64(c->cmdindex << DIRECT_LOOKUP_SHIFT);
	ac->abort_tag = cpu_to_le64(le32_to_cpu(c2a->Tag));
	ac->error_ptr = cpu_to_le64(c->busaddr +
			offsetof(struct io_accel2_cmd, error_data));
	ac->error_len = cpu_to_le32(sizeof(c2->error_data));
}

5741 5742 5743 5744 5745 5746 5747 5748
/* ioaccel2 path firmware cannot handle abort task requests.
 * Change abort requests to physical target reset, and send to the
 * address of the physical disk used for the ioaccel 2 command.
 * Return 0 on success (IO_OK)
 *	 -1 on failure
 */

static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h,
5749
	unsigned char *scsi3addr, struct CommandList *abort, int reply_queue)
5750 5751 5752 5753 5754 5755 5756 5757
{
	int rc = IO_OK;
	struct scsi_cmnd *scmd; /* scsi command within request being aborted */
	struct hpsa_scsi_dev_t *dev; /* device to which scsi cmd was sent */
	unsigned char phys_scsi3addr[8]; /* addr of phys disk with volume */
	unsigned char *psa = &phys_scsi3addr[0];

	/* Get a pointer to the hpsa logical device. */
5758
	scmd = abort->scsi_cmd;
5759 5760 5761 5762 5763 5764 5765
	dev = (struct hpsa_scsi_dev_t *)(scmd->device->hostdata);
	if (dev == NULL) {
		dev_warn(&h->pdev->dev,
			"Cannot abort: no device pointer for command.\n");
			return -1; /* not abortable */
	}

5766 5767
	if (h->raid_offload_debug > 0)
		dev_info(&h->pdev->dev,
5768
			"scsi %d:%d:%d:%d %s scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5769
			h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
5770
			"Reset as abort",
5771 5772 5773
			scsi3addr[0], scsi3addr[1], scsi3addr[2], scsi3addr[3],
			scsi3addr[4], scsi3addr[5], scsi3addr[6], scsi3addr[7]);

5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786
	if (!dev->offload_enabled) {
		dev_warn(&h->pdev->dev,
			"Can't abort: device is not operating in HP SSD Smart Path mode.\n");
		return -1; /* not abortable */
	}

	/* Incoming scsi3addr is logical addr. We need physical disk addr. */
	if (!hpsa_get_pdisk_of_ioaccel2(h, abort, psa)) {
		dev_warn(&h->pdev->dev, "Can't abort: Failed lookup of physical address.\n");
		return -1; /* not abortable */
	}

	/* send the reset */
5787 5788 5789 5790 5791
	if (h->raid_offload_debug > 0)
		dev_info(&h->pdev->dev,
			"Reset as abort: Resetting physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
			psa[0], psa[1], psa[2], psa[3],
			psa[4], psa[5], psa[6], psa[7]);
W
Webb Scales 已提交
5792
	rc = hpsa_do_reset(h, dev, psa, HPSA_RESET_TYPE_TARGET, reply_queue);
5793 5794 5795 5796 5797 5798 5799 5800 5801
	if (rc != 0) {
		dev_warn(&h->pdev->dev,
			"Reset as abort: Failed on physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
			psa[0], psa[1], psa[2], psa[3],
			psa[4], psa[5], psa[6], psa[7]);
		return rc; /* failed to reset */
	}

	/* wait for device to recover */
5802
	if (wait_for_device_to_become_ready(h, psa, reply_queue) != 0) {
5803 5804 5805 5806 5807 5808 5809 5810 5811 5812 5813 5814 5815 5816 5817 5818
		dev_warn(&h->pdev->dev,
			"Reset as abort: Failed: Device never recovered from reset: 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
			psa[0], psa[1], psa[2], psa[3],
			psa[4], psa[5], psa[6], psa[7]);
		return -1;  /* failed to recover */
	}

	/* device recovered */
	dev_info(&h->pdev->dev,
		"Reset as abort: Device recovered from reset: scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
		psa[0], psa[1], psa[2], psa[3],
		psa[4], psa[5], psa[6], psa[7]);

	return rc; /* success */
}

5819 5820 5821 5822 5823 5824 5825 5826 5827 5828 5829 5830 5831 5832 5833 5834
static int hpsa_send_abort_ioaccel2(struct ctlr_info *h,
	struct CommandList *abort, int reply_queue)
{
	int rc = IO_OK;
	struct CommandList *c;
	__le32 taglower, tagupper;
	struct hpsa_scsi_dev_t *dev;
	struct io_accel2_cmd *c2;

	dev = abort->scsi_cmd->device->hostdata;
	if (!dev->offload_enabled && !dev->hba_ioaccel_enabled)
		return -1;

	c = cmd_alloc(h);
	setup_ioaccel2_abort_cmd(c, h, abort, reply_queue);
	c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
5835
	(void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, DEFAULT_TIMEOUT);
5836 5837 5838 5839 5840 5841 5842 5843 5844 5845 5846 5847 5848 5849 5850 5851 5852 5853 5854 5855 5856 5857 5858 5859 5860 5861 5862 5863 5864 5865 5866 5867
	hpsa_get_tag(h, abort, &taglower, &tagupper);
	dev_dbg(&h->pdev->dev,
		"%s: Tag:0x%08x:%08x: do_simple_cmd(ioaccel2 abort) completed.\n",
		__func__, tagupper, taglower);
	/* no unmap needed here because no data xfer. */

	dev_dbg(&h->pdev->dev,
		"%s: Tag:0x%08x:%08x: abort service response = 0x%02x.\n",
		__func__, tagupper, taglower, c2->error_data.serv_response);
	switch (c2->error_data.serv_response) {
	case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
	case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
		rc = 0;
		break;
	case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
	case IOACCEL2_SERV_RESPONSE_FAILURE:
	case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
		rc = -1;
		break;
	default:
		dev_warn(&h->pdev->dev,
			"%s: Tag:0x%08x:%08x: unknown abort service response 0x%02x\n",
			__func__, tagupper, taglower,
			c2->error_data.serv_response);
		rc = -1;
	}
	cmd_free(h, c);
	dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n", __func__,
		tagupper, taglower);
	return rc;
}

5868
static int hpsa_send_abort_both_ways(struct ctlr_info *h,
5869
	struct hpsa_scsi_dev_t *dev, struct CommandList *abort, int reply_queue)
5870
{
5871 5872
	/*
	 * ioccelerator mode 2 commands should be aborted via the
5873
	 * accelerated path, since RAID path is unaware of these commands,
5874 5875
	 * but not all underlying firmware can handle abort TMF.
	 * Change abort to physical device reset when abort TMF is unsupported.
5876
	 */
5877
	if (abort->cmd_type == CMD_IOACCEL2) {
5878 5879
		if ((HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags) ||
			dev->physical_device)
5880 5881 5882
			return hpsa_send_abort_ioaccel2(h, abort,
						reply_queue);
		else
5883 5884
			return hpsa_send_reset_as_abort_ioaccel2(h,
							dev->scsi3addr,
5885
							abort, reply_queue);
5886
	}
5887
	return hpsa_send_abort(h, dev->scsi3addr, abort, reply_queue);
5888
}
5889

5890 5891 5892 5893 5894 5895 5896
/* Find out which reply queue a command was meant to return on */
static int hpsa_extract_reply_queue(struct ctlr_info *h,
					struct CommandList *c)
{
	if (c->cmd_type == CMD_IOACCEL2)
		return h->ioaccel2_cmd_pool[c->cmdindex].reply_queue;
	return c->Header.ReplyQueue;
5897 5898
}

S
Stephen Cameron 已提交
5899 5900 5901 5902 5903 5904 5905 5906 5907 5908 5909 5910
/*
 * Limit concurrency of abort commands to prevent
 * over-subscription of commands
 */
static inline int wait_for_available_abort_cmd(struct ctlr_info *h)
{
#define ABORT_CMD_WAIT_MSECS 5000
	return !wait_event_timeout(h->abort_cmd_wait_queue,
			atomic_dec_if_positive(&h->abort_cmds_available) >= 0,
			msecs_to_jiffies(ABORT_CMD_WAIT_MSECS));
}

5911 5912 5913 5914 5915 5916 5917
/* Send an abort for the specified command.
 *	If the device and controller support it,
 *		send a task abort request.
 */
static int hpsa_eh_abort_handler(struct scsi_cmnd *sc)
{

5918
	int rc;
5919 5920 5921 5922 5923 5924
	struct ctlr_info *h;
	struct hpsa_scsi_dev_t *dev;
	struct CommandList *abort; /* pointer to command to be aborted */
	struct scsi_cmnd *as;	/* ptr to scsi cmd inside aborted command. */
	char msg[256];		/* For debug messaging. */
	int ml = 0;
D
Don Brace 已提交
5925
	__le32 tagupper, taglower;
5926 5927 5928 5929
	int refcount, reply_queue;

	if (sc == NULL)
		return FAILED;
5930

S
Stephen Cameron 已提交
5931 5932 5933
	if (sc->device == NULL)
		return FAILED;

5934 5935
	/* Find the controller of the command to be aborted */
	h = sdev_to_hba(sc->device);
S
Stephen Cameron 已提交
5936
	if (h == NULL)
5937 5938
		return FAILED;

5939 5940 5941 5942 5943
	/* Find the device of the command to be aborted */
	dev = sc->device->hostdata;
	if (!dev) {
		dev_err(&h->pdev->dev, "%s FAILED, Device lookup failed.\n",
				msg);
5944
		return FAILED;
5945 5946 5947 5948 5949 5950 5951 5952 5953 5954 5955 5956 5957 5958 5959
	}

	/* If controller locked up, we can guarantee command won't complete */
	if (lockup_detected(h)) {
		hpsa_show_dev_msg(KERN_WARNING, h, dev,
					"ABORT FAILED, lockup detected");
		return FAILED;
	}

	/* This is a good time to check if controller lockup has occurred */
	if (detect_controller_lockup(h)) {
		hpsa_show_dev_msg(KERN_WARNING, h, dev,
					"ABORT FAILED, new lockup detected");
		return FAILED;
	}
5960

5961 5962 5963 5964 5965 5966
	/* Check that controller supports some kind of task abort */
	if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags) &&
		!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
		return FAILED;

	memset(msg, 0, sizeof(msg));
5967
	ml += sprintf(msg+ml, "scsi %d:%d:%d:%llu %s %p",
5968
		h->scsi_host->host_no, sc->device->channel,
5969
		sc->device->id, sc->device->lun,
5970
		"Aborting command", sc);
5971 5972 5973 5974

	/* Get SCSI command to be aborted */
	abort = (struct CommandList *) sc->host_scribble;
	if (abort == NULL) {
5975 5976 5977 5978 5979 5980 5981
		/* This can happen if the command already completed. */
		return SUCCESS;
	}
	refcount = atomic_inc_return(&abort->refcount);
	if (refcount == 1) { /* Command is done already. */
		cmd_free(h, abort);
		return SUCCESS;
5982
	}
S
Stephen Cameron 已提交
5983 5984 5985 5986 5987 5988 5989 5990

	/* Don't bother trying the abort if we know it won't work. */
	if (abort->cmd_type != CMD_IOACCEL2 &&
		abort->cmd_type != CMD_IOACCEL1 && !dev->supports_aborts) {
		cmd_free(h, abort);
		return FAILED;
	}

5991 5992 5993 5994 5995 5996 5997 5998 5999 6000
	/*
	 * Check that we're aborting the right command.
	 * It's possible the CommandList already completed and got re-used.
	 */
	if (abort->scsi_cmd != sc) {
		cmd_free(h, abort);
		return SUCCESS;
	}

	abort->abort_pending = true;
6001
	hpsa_get_tag(h, abort, &taglower, &tagupper);
6002
	reply_queue = hpsa_extract_reply_queue(h, abort);
6003
	ml += sprintf(msg+ml, "Tag:0x%08x:%08x ", tagupper, taglower);
6004
	as  = abort->scsi_cmd;
6005
	if (as != NULL)
6006 6007 6008 6009 6010
		ml += sprintf(msg+ml,
			"CDBLen: %d CDB: 0x%02x%02x... SN: 0x%lx ",
			as->cmd_len, as->cmnd[0], as->cmnd[1],
			as->serial_number);
	dev_warn(&h->pdev->dev, "%s BEING SENT\n", msg);
6011
	hpsa_show_dev_msg(KERN_WARNING, h, dev, "Aborting command");
6012

6013 6014 6015 6016 6017
	/*
	 * Command is in flight, or possibly already completed
	 * by the firmware (but not to the scsi mid layer) but we can't
	 * distinguish which.  Send the abort down.
	 */
S
Stephen Cameron 已提交
6018 6019
	if (wait_for_available_abort_cmd(h)) {
		dev_warn(&h->pdev->dev,
6020 6021
			"%s FAILED, timeout waiting for an abort command to become available.\n",
			msg);
S
Stephen Cameron 已提交
6022 6023 6024
		cmd_free(h, abort);
		return FAILED;
	}
6025
	rc = hpsa_send_abort_both_ways(h, dev, abort, reply_queue);
S
Stephen Cameron 已提交
6026 6027
	atomic_inc(&h->abort_cmds_available);
	wake_up_all(&h->abort_cmd_wait_queue);
6028
	if (rc != 0) {
6029
		dev_warn(&h->pdev->dev, "%s SENT, FAILED\n", msg);
6030
		hpsa_show_dev_msg(KERN_WARNING, h, dev,
6031
				"FAILED to abort command");
6032
		cmd_free(h, abort);
6033 6034
		return FAILED;
	}
6035
	dev_info(&h->pdev->dev, "%s SENT, SUCCESS\n", msg);
W
Webb Scales 已提交
6036
	wait_event(h->event_sync_wait_queue,
6037
		   abort->scsi_cmd != sc || lockup_detected(h));
6038
	cmd_free(h, abort);
6039
	return !lockup_detected(h) ? SUCCESS : FAILED;
6040 6041
}

6042 6043 6044 6045 6046 6047 6048 6049 6050 6051 6052 6053 6054 6055 6056 6057 6058 6059 6060 6061 6062 6063 6064 6065 6066 6067 6068 6069 6070 6071 6072 6073 6074 6075 6076 6077 6078 6079 6080 6081 6082 6083 6084 6085 6086 6087 6088 6089 6090 6091 6092 6093
/*
 * For operations with an associated SCSI command, a command block is allocated
 * at init, and managed by cmd_tagged_alloc() and cmd_tagged_free() using the
 * block request tag as an index into a table of entries.  cmd_tagged_free() is
 * the complement, although cmd_free() may be called instead.
 */
static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
					    struct scsi_cmnd *scmd)
{
	int idx = hpsa_get_cmd_index(scmd);
	struct CommandList *c = h->cmd_pool + idx;

	if (idx < HPSA_NRESERVED_CMDS || idx >= h->nr_cmds) {
		dev_err(&h->pdev->dev, "Bad block tag: %d not in [%d..%d]\n",
			idx, HPSA_NRESERVED_CMDS, h->nr_cmds - 1);
		/* The index value comes from the block layer, so if it's out of
		 * bounds, it's probably not our bug.
		 */
		BUG();
	}

	atomic_inc(&c->refcount);
	if (unlikely(!hpsa_is_cmd_idle(c))) {
		/*
		 * We expect that the SCSI layer will hand us a unique tag
		 * value.  Thus, there should never be a collision here between
		 * two requests...because if the selected command isn't idle
		 * then someone is going to be very disappointed.
		 */
		dev_err(&h->pdev->dev,
			"tag collision (tag=%d) in cmd_tagged_alloc().\n",
			idx);
		if (c->scsi_cmd != NULL)
			scsi_print_command(c->scsi_cmd);
		scsi_print_command(scmd);
	}

	hpsa_cmd_partial_init(h, idx, c);
	return c;
}

static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c)
{
	/*
	 * Release our reference to the block.  We don't need to do anything
	 * else to free it, because it is accessed by index.  (There's no point
	 * in checking the result of the decrement, since we cannot guarantee
	 * that there isn't a concurrent abort which is also accessing it.)
	 */
	(void)atomic_dec(&c->refcount);
}

6094 6095 6096 6097 6098
/*
 * For operations that cannot sleep, a command block is allocated at init,
 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
 * which ones are free or in use.  Lock must be held when calling this.
 * cmd_free() is the complement.
6099 6100
 * This function never gives up and returns NULL.  If it hangs,
 * another thread must call cmd_free() to free some tags.
6101
 */
6102

6103 6104 6105
static struct CommandList *cmd_alloc(struct ctlr_info *h)
{
	struct CommandList *c;
6106
	int refcount, i;
6107
	int offset = 0;
6108

6109 6110
	/*
	 * There is some *extremely* small but non-zero chance that that
6111 6112 6113 6114 6115 6116 6117 6118
	 * multiple threads could get in here, and one thread could
	 * be scanning through the list of bits looking for a free
	 * one, but the free ones are always behind him, and other
	 * threads sneak in behind him and eat them before he can
	 * get to them, so that while there is always a free one, a
	 * very unlucky thread might be starved anyway, never able to
	 * beat the other threads.  In reality, this happens so
	 * infrequently as to be indistinguishable from never.
6119 6120 6121 6122 6123 6124 6125
	 *
	 * Note that we start allocating commands before the SCSI host structure
	 * is initialized.  Since the search starts at bit zero, this
	 * all works, since we have at least one command structure available;
	 * however, it means that the structures with the low indexes have to be
	 * reserved for driver-initiated requests, while requests from the block
	 * layer will use the higher indexes.
6126
	 */
6127

6128
	for (;;) {
6129 6130 6131 6132
		i = find_next_zero_bit(h->cmd_pool_bits,
					HPSA_NRESERVED_CMDS,
					offset);
		if (unlikely(i >= HPSA_NRESERVED_CMDS)) {
6133 6134 6135 6136 6137 6138 6139
			offset = 0;
			continue;
		}
		c = h->cmd_pool + i;
		refcount = atomic_inc_return(&c->refcount);
		if (unlikely(refcount > 1)) {
			cmd_free(h, c); /* already in use */
6140
			offset = (i + 1) % HPSA_NRESERVED_CMDS;
6141 6142 6143 6144 6145 6146
			continue;
		}
		set_bit(i & (BITS_PER_LONG - 1),
			h->cmd_pool_bits + (i / BITS_PER_LONG));
		break; /* it's ours now. */
	}
6147
	hpsa_cmd_partial_init(h, i, c);
6148 6149 6150
	return c;
}

6151 6152 6153 6154 6155 6156
/*
 * This is the complementary operation to cmd_alloc().  Note, however, in some
 * corner cases it may also be used to free blocks allocated by
 * cmd_tagged_alloc() in which case the ref-count decrement does the trick and
 * the clear-bit is harmless.
 */
6157 6158
static void cmd_free(struct ctlr_info *h, struct CommandList *c)
{
6159 6160
	if (atomic_dec_and_test(&c->refcount)) {
		int i;
6161

6162 6163 6164 6165
		i = c - h->cmd_pool;
		clear_bit(i & (BITS_PER_LONG - 1),
			  h->cmd_pool_bits + (i / BITS_PER_LONG));
	}
6166 6167 6168 6169
}

#ifdef CONFIG_COMPAT

D
Don Brace 已提交
6170 6171
static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd,
	void __user *arg)
6172 6173 6174 6175 6176 6177 6178 6179
{
	IOCTL32_Command_struct __user *arg32 =
	    (IOCTL32_Command_struct __user *) arg;
	IOCTL_Command_struct arg64;
	IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
	int err;
	u32 cp;

6180
	memset(&arg64, 0, sizeof(arg64));
6181 6182 6183 6184 6185 6186 6187 6188 6189 6190 6191 6192 6193 6194 6195
	err = 0;
	err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
			   sizeof(arg64.LUN_info));
	err |= copy_from_user(&arg64.Request, &arg32->Request,
			   sizeof(arg64.Request));
	err |= copy_from_user(&arg64.error_info, &arg32->error_info,
			   sizeof(arg64.error_info));
	err |= get_user(arg64.buf_size, &arg32->buf_size);
	err |= get_user(cp, &arg32->buf);
	arg64.buf = compat_ptr(cp);
	err |= copy_to_user(p, &arg64, sizeof(arg64));

	if (err)
		return -EFAULT;

D
Don Brace 已提交
6196
	err = hpsa_ioctl(dev, CCISS_PASSTHRU, p);
6197 6198 6199 6200 6201 6202 6203 6204 6205 6206
	if (err)
		return err;
	err |= copy_in_user(&arg32->error_info, &p->error_info,
			 sizeof(arg32->error_info));
	if (err)
		return -EFAULT;
	return err;
}

static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
D
Don Brace 已提交
6207
	int cmd, void __user *arg)
6208 6209 6210 6211 6212 6213 6214 6215 6216
{
	BIG_IOCTL32_Command_struct __user *arg32 =
	    (BIG_IOCTL32_Command_struct __user *) arg;
	BIG_IOCTL_Command_struct arg64;
	BIG_IOCTL_Command_struct __user *p =
	    compat_alloc_user_space(sizeof(arg64));
	int err;
	u32 cp;

6217
	memset(&arg64, 0, sizeof(arg64));
6218 6219 6220 6221 6222 6223 6224 6225 6226 6227 6228 6229 6230 6231 6232 6233
	err = 0;
	err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
			   sizeof(arg64.LUN_info));
	err |= copy_from_user(&arg64.Request, &arg32->Request,
			   sizeof(arg64.Request));
	err |= copy_from_user(&arg64.error_info, &arg32->error_info,
			   sizeof(arg64.error_info));
	err |= get_user(arg64.buf_size, &arg32->buf_size);
	err |= get_user(arg64.malloc_size, &arg32->malloc_size);
	err |= get_user(cp, &arg32->buf);
	arg64.buf = compat_ptr(cp);
	err |= copy_to_user(p, &arg64, sizeof(arg64));

	if (err)
		return -EFAULT;

D
Don Brace 已提交
6234
	err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, p);
6235 6236 6237 6238 6239 6240 6241 6242
	if (err)
		return err;
	err |= copy_in_user(&arg32->error_info, &p->error_info,
			 sizeof(arg32->error_info));
	if (err)
		return -EFAULT;
	return err;
}
6243

D
Don Brace 已提交
6244
static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
6245 6246 6247 6248 6249 6250 6251 6252 6253 6254 6255 6256 6257 6258 6259 6260 6261 6262 6263 6264 6265 6266 6267 6268 6269 6270 6271 6272
{
	switch (cmd) {
	case CCISS_GETPCIINFO:
	case CCISS_GETINTINFO:
	case CCISS_SETINTINFO:
	case CCISS_GETNODENAME:
	case CCISS_SETNODENAME:
	case CCISS_GETHEARTBEAT:
	case CCISS_GETBUSTYPES:
	case CCISS_GETFIRMVER:
	case CCISS_GETDRIVVER:
	case CCISS_REVALIDVOLS:
	case CCISS_DEREGDISK:
	case CCISS_REGNEWDISK:
	case CCISS_REGNEWD:
	case CCISS_RESCANDISK:
	case CCISS_GETLUNINFO:
		return hpsa_ioctl(dev, cmd, arg);

	case CCISS_PASSTHRU32:
		return hpsa_ioctl32_passthru(dev, cmd, arg);
	case CCISS_BIG_PASSTHRU32:
		return hpsa_ioctl32_big_passthru(dev, cmd, arg);

	default:
		return -ENOIOCTLCMD;
	}
}
6273 6274 6275 6276 6277 6278 6279 6280 6281 6282 6283 6284 6285 6286 6287 6288 6289 6290 6291 6292 6293 6294 6295 6296 6297 6298 6299 6300 6301 6302 6303 6304 6305 6306 6307 6308 6309 6310 6311 6312 6313 6314 6315 6316 6317
#endif

static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp)
{
	struct hpsa_pci_info pciinfo;

	if (!argp)
		return -EINVAL;
	pciinfo.domain = pci_domain_nr(h->pdev->bus);
	pciinfo.bus = h->pdev->bus->number;
	pciinfo.dev_fn = h->pdev->devfn;
	pciinfo.board_id = h->board_id;
	if (copy_to_user(argp, &pciinfo, sizeof(pciinfo)))
		return -EFAULT;
	return 0;
}

static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp)
{
	DriverVer_type DriverVer;
	unsigned char vmaj, vmin, vsubmin;
	int rc;

	rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu",
		&vmaj, &vmin, &vsubmin);
	if (rc != 3) {
		dev_info(&h->pdev->dev, "driver version string '%s' "
			"unrecognized.", HPSA_DRIVER_VERSION);
		vmaj = 0;
		vmin = 0;
		vsubmin = 0;
	}
	DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin;
	if (!argp)
		return -EINVAL;
	if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type)))
		return -EFAULT;
	return 0;
}

static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
{
	IOCTL_Command_struct iocommand;
	struct CommandList *c;
	char *buff = NULL;
6318
	u64 temp64;
6319
	int rc = 0;
6320 6321 6322 6323 6324 6325 6326 6327 6328 6329 6330 6331 6332 6333

	if (!argp)
		return -EINVAL;
	if (!capable(CAP_SYS_RAWIO))
		return -EPERM;
	if (copy_from_user(&iocommand, argp, sizeof(iocommand)))
		return -EFAULT;
	if ((iocommand.buf_size < 1) &&
	    (iocommand.Request.Type.Direction != XFER_NONE)) {
		return -EINVAL;
	}
	if (iocommand.buf_size > 0) {
		buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
		if (buff == NULL)
6334
			return -ENOMEM;
6335
		if (iocommand.Request.Type.Direction & XFER_WRITE) {
6336 6337 6338
			/* Copy the data into the buffer we created */
			if (copy_from_user(buff, iocommand.buf,
				iocommand.buf_size)) {
6339 6340
				rc = -EFAULT;
				goto out_kfree;
6341 6342 6343
			}
		} else {
			memset(buff, 0, iocommand.buf_size);
6344
		}
6345
	}
6346
	c = cmd_alloc(h);
6347

6348 6349
	/* Fill in the command type */
	c->cmd_type = CMD_IOCTL_PEND;
6350
	c->scsi_cmd = SCSI_CMD_BUSY;
6351 6352 6353 6354
	/* Fill in Command Header */
	c->Header.ReplyQueue = 0; /* unused in simple mode */
	if (iocommand.buf_size > 0) {	/* buffer to fill */
		c->Header.SGList = 1;
6355
		c->Header.SGTotal = cpu_to_le16(1);
6356 6357
	} else	{ /* no buffers to fill */
		c->Header.SGList = 0;
6358
		c->Header.SGTotal = cpu_to_le16(0);
6359 6360 6361 6362 6363 6364 6365 6366 6367
	}
	memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN));

	/* Fill in Request block */
	memcpy(&c->Request, &iocommand.Request,
		sizeof(c->Request));

	/* Fill in the scatter gather information */
	if (iocommand.buf_size > 0) {
6368
		temp64 = pci_map_single(h->pdev, buff,
6369
			iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
6370 6371 6372
		if (dma_mapping_error(&h->pdev->dev, (dma_addr_t) temp64)) {
			c->SG[0].Addr = cpu_to_le64(0);
			c->SG[0].Len = cpu_to_le32(0);
6373 6374 6375
			rc = -ENOMEM;
			goto out;
		}
6376 6377 6378
		c->SG[0].Addr = cpu_to_le64(temp64);
		c->SG[0].Len = cpu_to_le32(iocommand.buf_size);
		c->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* not chaining */
6379
	}
6380 6381
	rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
					DEFAULT_TIMEOUT);
6382 6383
	if (iocommand.buf_size > 0)
		hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
6384
	check_ioctl_unit_attention(h, c);
6385 6386 6387 6388
	if (rc) {
		rc = -EIO;
		goto out;
	}
6389 6390 6391 6392 6393

	/* Copy the error information out */
	memcpy(&iocommand.error_info, c->err_info,
		sizeof(iocommand.error_info));
	if (copy_to_user(argp, &iocommand, sizeof(iocommand))) {
6394 6395
		rc = -EFAULT;
		goto out;
6396
	}
6397
	if ((iocommand.Request.Type.Direction & XFER_READ) &&
6398
		iocommand.buf_size > 0) {
6399 6400
		/* Copy the data out of the buffer we created */
		if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
6401 6402
			rc = -EFAULT;
			goto out;
6403 6404
		}
	}
6405
out:
6406
	cmd_free(h, c);
6407 6408 6409
out_kfree:
	kfree(buff);
	return rc;
6410 6411 6412 6413 6414 6415 6416 6417
}

static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
{
	BIG_IOCTL_Command_struct *ioc;
	struct CommandList *c;
	unsigned char **buff = NULL;
	int *buff_size = NULL;
6418
	u64 temp64;
6419 6420
	BYTE sg_used = 0;
	int status = 0;
6421 6422
	u32 left;
	u32 sz;
6423 6424 6425 6426 6427 6428 6429 6430 6431 6432 6433 6434 6435 6436 6437 6438 6439 6440 6441 6442 6443 6444 6445 6446 6447 6448
	BYTE __user *data_ptr;

	if (!argp)
		return -EINVAL;
	if (!capable(CAP_SYS_RAWIO))
		return -EPERM;
	ioc = (BIG_IOCTL_Command_struct *)
	    kmalloc(sizeof(*ioc), GFP_KERNEL);
	if (!ioc) {
		status = -ENOMEM;
		goto cleanup1;
	}
	if (copy_from_user(ioc, argp, sizeof(*ioc))) {
		status = -EFAULT;
		goto cleanup1;
	}
	if ((ioc->buf_size < 1) &&
	    (ioc->Request.Type.Direction != XFER_NONE)) {
		status = -EINVAL;
		goto cleanup1;
	}
	/* Check kmalloc limits  using all SGs */
	if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
		status = -EINVAL;
		goto cleanup1;
	}
6449
	if (ioc->buf_size > ioc->malloc_size * SG_ENTRIES_IN_CMD) {
6450 6451 6452
		status = -EINVAL;
		goto cleanup1;
	}
6453
	buff = kzalloc(SG_ENTRIES_IN_CMD * sizeof(char *), GFP_KERNEL);
6454 6455 6456 6457
	if (!buff) {
		status = -ENOMEM;
		goto cleanup1;
	}
6458
	buff_size = kmalloc(SG_ENTRIES_IN_CMD * sizeof(int), GFP_KERNEL);
6459 6460 6461 6462 6463 6464 6465 6466 6467 6468 6469 6470 6471 6472
	if (!buff_size) {
		status = -ENOMEM;
		goto cleanup1;
	}
	left = ioc->buf_size;
	data_ptr = ioc->buf;
	while (left) {
		sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
		buff_size[sg_used] = sz;
		buff[sg_used] = kmalloc(sz, GFP_KERNEL);
		if (buff[sg_used] == NULL) {
			status = -ENOMEM;
			goto cleanup1;
		}
6473
		if (ioc->Request.Type.Direction & XFER_WRITE) {
6474
			if (copy_from_user(buff[sg_used], data_ptr, sz)) {
6475
				status = -EFAULT;
6476 6477 6478 6479 6480 6481 6482 6483
				goto cleanup1;
			}
		} else
			memset(buff[sg_used], 0, sz);
		left -= sz;
		data_ptr += sz;
		sg_used++;
	}
6484
	c = cmd_alloc(h);
6485

6486
	c->cmd_type = CMD_IOCTL_PEND;
6487
	c->scsi_cmd = SCSI_CMD_BUSY;
6488
	c->Header.ReplyQueue = 0;
6489 6490
	c->Header.SGList = (u8) sg_used;
	c->Header.SGTotal = cpu_to_le16(sg_used);
6491 6492 6493 6494 6495
	memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN));
	memcpy(&c->Request, &ioc->Request, sizeof(c->Request));
	if (ioc->buf_size > 0) {
		int i;
		for (i = 0; i < sg_used; i++) {
6496
			temp64 = pci_map_single(h->pdev, buff[i],
6497
				    buff_size[i], PCI_DMA_BIDIRECTIONAL);
6498 6499 6500 6501
			if (dma_mapping_error(&h->pdev->dev,
							(dma_addr_t) temp64)) {
				c->SG[i].Addr = cpu_to_le64(0);
				c->SG[i].Len = cpu_to_le32(0);
6502 6503 6504
				hpsa_pci_unmap(h->pdev, c, i,
					PCI_DMA_BIDIRECTIONAL);
				status = -ENOMEM;
6505
				goto cleanup0;
6506
			}
6507 6508 6509
			c->SG[i].Addr = cpu_to_le64(temp64);
			c->SG[i].Len = cpu_to_le32(buff_size[i]);
			c->SG[i].Ext = cpu_to_le32(0);
6510
		}
6511
		c->SG[--i].Ext = cpu_to_le32(HPSA_SG_LAST);
6512
	}
6513 6514
	status = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
						DEFAULT_TIMEOUT);
6515 6516
	if (sg_used)
		hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL);
6517
	check_ioctl_unit_attention(h, c);
6518 6519 6520 6521 6522
	if (status) {
		status = -EIO;
		goto cleanup0;
	}

6523 6524 6525 6526
	/* Copy the error information out */
	memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info));
	if (copy_to_user(argp, ioc, sizeof(*ioc))) {
		status = -EFAULT;
6527
		goto cleanup0;
6528
	}
6529
	if ((ioc->Request.Type.Direction & XFER_READ) && ioc->buf_size > 0) {
D
Don Brace 已提交
6530 6531
		int i;

6532 6533 6534 6535 6536
		/* Copy the data out of the buffer we created */
		BYTE __user *ptr = ioc->buf;
		for (i = 0; i < sg_used; i++) {
			if (copy_to_user(ptr, buff[i], buff_size[i])) {
				status = -EFAULT;
6537
				goto cleanup0;
6538 6539 6540 6541 6542
			}
			ptr += buff_size[i];
		}
	}
	status = 0;
6543
cleanup0:
6544
	cmd_free(h, c);
6545 6546
cleanup1:
	if (buff) {
D
Don Brace 已提交
6547 6548
		int i;

6549 6550 6551 6552 6553 6554 6555 6556 6557 6558 6559 6560 6561 6562 6563 6564
		for (i = 0; i < sg_used; i++)
			kfree(buff[i]);
		kfree(buff);
	}
	kfree(buff_size);
	kfree(ioc);
	return status;
}

static void check_ioctl_unit_attention(struct ctlr_info *h,
	struct CommandList *c)
{
	if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
			c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
		(void) check_for_unit_attention(h, c);
}
6565

6566 6567 6568
/*
 * ioctl
 */
D
Don Brace 已提交
6569
static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
6570 6571 6572
{
	struct ctlr_info *h;
	void __user *argp = (void __user *)arg;
6573
	int rc;
6574 6575 6576 6577 6578 6579 6580

	h = sdev_to_hba(dev);

	switch (cmd) {
	case CCISS_DEREGDISK:
	case CCISS_REGNEWDISK:
	case CCISS_REGNEWD:
6581
		hpsa_scan_start(h->scsi_host);
6582 6583 6584 6585 6586 6587
		return 0;
	case CCISS_GETPCIINFO:
		return hpsa_getpciinfo_ioctl(h, argp);
	case CCISS_GETDRIVVER:
		return hpsa_getdrivver_ioctl(h, argp);
	case CCISS_PASSTHRU:
6588
		if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6589 6590
			return -EAGAIN;
		rc = hpsa_passthru_ioctl(h, argp);
6591
		atomic_inc(&h->passthru_cmds_avail);
6592
		return rc;
6593
	case CCISS_BIG_PASSTHRU:
6594
		if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6595 6596
			return -EAGAIN;
		rc = hpsa_big_passthru_ioctl(h, argp);
6597
		atomic_inc(&h->passthru_cmds_avail);
6598
		return rc;
6599 6600 6601 6602 6603
	default:
		return -ENOTTY;
	}
}

6604
static void hpsa_send_host_reset(struct ctlr_info *h, unsigned char *scsi3addr,
6605
				u8 reset_type)
6606 6607 6608 6609
{
	struct CommandList *c;

	c = cmd_alloc(h);
6610

6611 6612
	/* fill_cmd can't fail here, no data buffer to map */
	(void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0,
6613 6614 6615 6616 6617 6618 6619 6620
		RAID_CTLR_LUNID, TYPE_MSG);
	c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */
	c->waiting = NULL;
	enqueue_cmd_and_start_io(h, c);
	/* Don't wait for completion, the reset won't complete.  Don't free
	 * the command either.  This is the last command we will send before
	 * re-initializing everything, so it doesn't matter and won't leak.
	 */
6621
	return;
6622 6623
}

6624
static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
6625
	void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
6626 6627 6628
	int cmd_type)
{
	int pci_dir = XFER_NONE;
S
Stephen Cameron 已提交
6629
	u64 tag; /* for commands to be aborted */
6630 6631

	c->cmd_type = CMD_IOCTL_PEND;
6632
	c->scsi_cmd = SCSI_CMD_BUSY;
6633 6634 6635
	c->Header.ReplyQueue = 0;
	if (buff != NULL && size > 0) {
		c->Header.SGList = 1;
6636
		c->Header.SGTotal = cpu_to_le16(1);
6637 6638
	} else {
		c->Header.SGList = 0;
6639
		c->Header.SGTotal = cpu_to_le16(0);
6640 6641 6642 6643 6644 6645 6646
	}
	memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);

	if (cmd_type == TYPE_CMD) {
		switch (cmd) {
		case HPSA_INQUIRY:
			/* are we trying to read a vital product page */
6647
			if (page_code & VPD_PAGE) {
6648
				c->Request.CDB[1] = 0x01;
6649
				c->Request.CDB[2] = (page_code & 0xff);
6650 6651
			}
			c->Request.CDBLen = 6;
6652 6653
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6654 6655 6656 6657 6658 6659 6660 6661 6662 6663
			c->Request.Timeout = 0;
			c->Request.CDB[0] = HPSA_INQUIRY;
			c->Request.CDB[4] = size & 0xFF;
			break;
		case HPSA_REPORT_LOG:
		case HPSA_REPORT_PHYS:
			/* Talking to controller so It's a physical command
			   mode = 00 target = 0.  Nothing to write.
			 */
			c->Request.CDBLen = 12;
6664 6665
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6666 6667 6668 6669 6670 6671 6672
			c->Request.Timeout = 0;
			c->Request.CDB[0] = cmd;
			c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
			c->Request.CDB[7] = (size >> 16) & 0xFF;
			c->Request.CDB[8] = (size >> 8) & 0xFF;
			c->Request.CDB[9] = size & 0xFF;
			break;
S
Scott Teel 已提交
6673 6674 6675 6676 6677 6678 6679 6680 6681 6682 6683 6684 6685 6686 6687 6688 6689 6690
		case BMIC_SENSE_DIAG_OPTIONS:
			c->Request.CDBLen = 16;
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
			c->Request.Timeout = 0;
			/* Spec says this should be BMIC_WRITE */
			c->Request.CDB[0] = BMIC_READ;
			c->Request.CDB[6] = BMIC_SENSE_DIAG_OPTIONS;
			break;
		case BMIC_SET_DIAG_OPTIONS:
			c->Request.CDBLen = 16;
			c->Request.type_attr_dir =
					TYPE_ATTR_DIR(cmd_type,
						ATTR_SIMPLE, XFER_WRITE);
			c->Request.Timeout = 0;
			c->Request.CDB[0] = BMIC_WRITE;
			c->Request.CDB[6] = BMIC_SET_DIAG_OPTIONS;
			break;
6691 6692
		case HPSA_CACHE_FLUSH:
			c->Request.CDBLen = 12;
6693 6694 6695
			c->Request.type_attr_dir =
					TYPE_ATTR_DIR(cmd_type,
						ATTR_SIMPLE, XFER_WRITE);
6696 6697 6698
			c->Request.Timeout = 0;
			c->Request.CDB[0] = BMIC_WRITE;
			c->Request.CDB[6] = BMIC_CACHE_FLUSH;
6699 6700
			c->Request.CDB[7] = (size >> 8) & 0xFF;
			c->Request.CDB[8] = size & 0xFF;
6701 6702 6703
			break;
		case TEST_UNIT_READY:
			c->Request.CDBLen = 6;
6704 6705
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6706 6707
			c->Request.Timeout = 0;
			break;
6708 6709
		case HPSA_GET_RAID_MAP:
			c->Request.CDBLen = 12;
6710 6711
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6712 6713 6714 6715 6716 6717 6718 6719
			c->Request.Timeout = 0;
			c->Request.CDB[0] = HPSA_CISS_READ;
			c->Request.CDB[1] = cmd;
			c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
			c->Request.CDB[7] = (size >> 16) & 0xFF;
			c->Request.CDB[8] = (size >> 8) & 0xFF;
			c->Request.CDB[9] = size & 0xFF;
			break;
6720 6721
		case BMIC_SENSE_CONTROLLER_PARAMETERS:
			c->Request.CDBLen = 10;
6722 6723
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6724 6725 6726 6727 6728 6729
			c->Request.Timeout = 0;
			c->Request.CDB[0] = BMIC_READ;
			c->Request.CDB[6] = BMIC_SENSE_CONTROLLER_PARAMETERS;
			c->Request.CDB[7] = (size >> 16) & 0xFF;
			c->Request.CDB[8] = (size >> 8) & 0xFF;
			break;
6730 6731 6732 6733 6734 6735 6736 6737 6738 6739
		case BMIC_IDENTIFY_PHYSICAL_DEVICE:
			c->Request.CDBLen = 10;
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
			c->Request.Timeout = 0;
			c->Request.CDB[0] = BMIC_READ;
			c->Request.CDB[6] = BMIC_IDENTIFY_PHYSICAL_DEVICE;
			c->Request.CDB[7] = (size >> 16) & 0xFF;
			c->Request.CDB[8] = (size >> 8) & 0XFF;
			break;
K
Kevin Barnett 已提交
6740 6741 6742 6743 6744 6745 6746 6747 6748 6749
		case BMIC_SENSE_SUBSYSTEM_INFORMATION:
			c->Request.CDBLen = 10;
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
			c->Request.Timeout = 0;
			c->Request.CDB[0] = BMIC_READ;
			c->Request.CDB[6] = BMIC_SENSE_SUBSYSTEM_INFORMATION;
			c->Request.CDB[7] = (size >> 16) & 0xFF;
			c->Request.CDB[8] = (size >> 8) & 0XFF;
			break;
6750 6751 6752 6753 6754 6755 6756 6757 6758 6759
		case BMIC_SENSE_STORAGE_BOX_PARAMS:
			c->Request.CDBLen = 10;
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
			c->Request.Timeout = 0;
			c->Request.CDB[0] = BMIC_READ;
			c->Request.CDB[6] = BMIC_SENSE_STORAGE_BOX_PARAMS;
			c->Request.CDB[7] = (size >> 16) & 0xFF;
			c->Request.CDB[8] = (size >> 8) & 0XFF;
			break;
S
Scott Teel 已提交
6760 6761 6762 6763 6764 6765 6766 6767 6768 6769 6770 6771 6772 6773 6774 6775
		case BMIC_IDENTIFY_CONTROLLER:
			c->Request.CDBLen = 10;
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
			c->Request.Timeout = 0;
			c->Request.CDB[0] = BMIC_READ;
			c->Request.CDB[1] = 0;
			c->Request.CDB[2] = 0;
			c->Request.CDB[3] = 0;
			c->Request.CDB[4] = 0;
			c->Request.CDB[5] = 0;
			c->Request.CDB[6] = BMIC_IDENTIFY_CONTROLLER;
			c->Request.CDB[7] = (size >> 16) & 0xFF;
			c->Request.CDB[8] = (size >> 8) & 0XFF;
			c->Request.CDB[9] = 0;
			break;
6776 6777 6778
		default:
			dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd);
			BUG();
6779
			return -1;
6780 6781 6782 6783
		}
	} else if (cmd_type == TYPE_MSG) {
		switch (cmd) {

S
Scott Teel 已提交
6784 6785 6786 6787 6788 6789 6790 6791 6792 6793 6794 6795 6796 6797
		case  HPSA_PHYS_TARGET_RESET:
			c->Request.CDBLen = 16;
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
			c->Request.Timeout = 0; /* Don't time out */
			memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
			c->Request.CDB[0] = HPSA_RESET;
			c->Request.CDB[1] = HPSA_TARGET_RESET_TYPE;
			/* Physical target reset needs no control bytes 4-7*/
			c->Request.CDB[4] = 0x00;
			c->Request.CDB[5] = 0x00;
			c->Request.CDB[6] = 0x00;
			c->Request.CDB[7] = 0x00;
			break;
6798 6799
		case  HPSA_DEVICE_RESET_MSG:
			c->Request.CDBLen = 16;
6800 6801
			c->Request.type_attr_dir =
				TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6802
			c->Request.Timeout = 0; /* Don't time out */
6803 6804
			memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
			c->Request.CDB[0] =  cmd;
6805
			c->Request.CDB[1] = HPSA_RESET_TYPE_LUN;
6806 6807 6808 6809 6810 6811
			/* If bytes 4-7 are zero, it means reset the */
			/* LunID device */
			c->Request.CDB[4] = 0x00;
			c->Request.CDB[5] = 0x00;
			c->Request.CDB[6] = 0x00;
			c->Request.CDB[7] = 0x00;
6812 6813
			break;
		case  HPSA_ABORT_MSG:
S
Stephen Cameron 已提交
6814
			memcpy(&tag, buff, sizeof(tag));
D
Don Brace 已提交
6815
			dev_dbg(&h->pdev->dev,
S
Stephen Cameron 已提交
6816 6817
				"Abort Tag:0x%016llx using rqst Tag:0x%016llx",
				tag, c->Header.tag);
6818
			c->Request.CDBLen = 16;
6819 6820 6821
			c->Request.type_attr_dir =
					TYPE_ATTR_DIR(cmd_type,
						ATTR_SIMPLE, XFER_WRITE);
6822 6823 6824 6825 6826 6827
			c->Request.Timeout = 0; /* Don't time out */
			c->Request.CDB[0] = HPSA_TASK_MANAGEMENT;
			c->Request.CDB[1] = HPSA_TMF_ABORT_TASK;
			c->Request.CDB[2] = 0x00; /* reserved */
			c->Request.CDB[3] = 0x00; /* reserved */
			/* Tag to abort goes in CDB[4]-CDB[11] */
S
Stephen Cameron 已提交
6828
			memcpy(&c->Request.CDB[4], &tag, sizeof(tag));
6829 6830 6831 6832
			c->Request.CDB[12] = 0x00; /* reserved */
			c->Request.CDB[13] = 0x00; /* reserved */
			c->Request.CDB[14] = 0x00; /* reserved */
			c->Request.CDB[15] = 0x00; /* reserved */
6833 6834 6835 6836 6837 6838 6839 6840 6841 6842 6843
		break;
		default:
			dev_warn(&h->pdev->dev, "unknown message type %d\n",
				cmd);
			BUG();
		}
	} else {
		dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type);
		BUG();
	}

6844
	switch (GET_DIR(c->Request.type_attr_dir)) {
6845 6846 6847 6848 6849 6850 6851 6852 6853 6854 6855 6856
	case XFER_READ:
		pci_dir = PCI_DMA_FROMDEVICE;
		break;
	case XFER_WRITE:
		pci_dir = PCI_DMA_TODEVICE;
		break;
	case XFER_NONE:
		pci_dir = PCI_DMA_NONE;
		break;
	default:
		pci_dir = PCI_DMA_BIDIRECTIONAL;
	}
6857 6858 6859
	if (hpsa_map_one(h->pdev, c, buff, size, pci_dir))
		return -1;
	return 0;
6860 6861 6862 6863 6864 6865 6866 6867 6868
}

/*
 * Map (physical) PCI mem into (virtual) kernel space
 */
static void __iomem *remap_pci_mem(ulong base, ulong size)
{
	ulong page_base = ((ulong) base) & PAGE_MASK;
	ulong page_offs = ((ulong) base) - page_base;
6869 6870
	void __iomem *page_remapped = ioremap_nocache(page_base,
		page_offs + size);
6871 6872 6873 6874

	return page_remapped ? (page_remapped + page_offs) : NULL;
}

6875
static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q)
6876
{
6877
	return h->access.command_completed(h, q);
6878 6879
}

6880
static inline bool interrupt_pending(struct ctlr_info *h)
6881 6882 6883 6884 6885 6886
{
	return h->access.intr_pending(h);
}

static inline long interrupt_not_for_us(struct ctlr_info *h)
{
6887 6888
	return (h->access.intr_pending(h) == 0) ||
		(h->interrupts_enabled == 0);
6889 6890
}

6891 6892
static inline int bad_tag(struct ctlr_info *h, u32 tag_index,
	u32 raw_tag)
6893 6894 6895 6896 6897 6898 6899 6900
{
	if (unlikely(tag_index >= h->nr_cmds)) {
		dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag);
		return 1;
	}
	return 0;
}

6901
static inline void finish_cmd(struct CommandList *c)
6902
{
6903
	dial_up_lockup_detection_on_fw_flash_complete(c->h, c);
6904 6905
	if (likely(c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_SCSI
			|| c->cmd_type == CMD_IOACCEL2))
6906
		complete_scsi_command(c);
6907
	else if (c->cmd_type == CMD_IOCTL_PEND || c->cmd_type == IOACCEL2_TMF)
6908
		complete(c->waiting);
6909 6910
}

6911
/* process completion of an indexed ("direct lookup") command */
6912
static inline void process_indexed_cmd(struct ctlr_info *h,
6913 6914 6915 6916 6917
	u32 raw_tag)
{
	u32 tag_index;
	struct CommandList *c;

6918
	tag_index = raw_tag >> DIRECT_LOOKUP_SHIFT;
6919 6920 6921 6922
	if (!bad_tag(h, tag_index, raw_tag)) {
		c = h->cmd_pool + tag_index;
		finish_cmd(c);
	}
6923 6924
}

6925 6926 6927 6928 6929 6930 6931 6932 6933 6934 6935 6936 6937 6938 6939 6940 6941 6942 6943
/* Some controllers, like p400, will give us one interrupt
 * after a soft reset, even if we turned interrupts off.
 * Only need to check for this in the hpsa_xxx_discard_completions
 * functions.
 */
static int ignore_bogus_interrupt(struct ctlr_info *h)
{
	if (likely(!reset_devices))
		return 0;

	if (likely(h->interrupts_enabled))
		return 0;

	dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled "
		"(known firmware bug.)  Ignoring.\n");

	return 1;
}

6944 6945 6946 6947 6948 6949
/*
 * Convert &h->q[x] (passed to interrupt handlers) back to h.
 * Relies on (h-q[x] == x) being true for x such that
 * 0 <= x < MAX_REPLY_QUEUES.
 */
static struct ctlr_info *queue_to_hba(u8 *queue)
6950
{
6951 6952 6953 6954 6955 6956 6957
	return container_of((queue - *queue), struct ctlr_info, q[0]);
}

static irqreturn_t hpsa_intx_discard_completions(int irq, void *queue)
{
	struct ctlr_info *h = queue_to_hba(queue);
	u8 q = *(u8 *) queue;
6958 6959 6960 6961 6962 6963 6964
	u32 raw_tag;

	if (ignore_bogus_interrupt(h))
		return IRQ_NONE;

	if (interrupt_not_for_us(h))
		return IRQ_NONE;
6965
	h->last_intr_timestamp = get_jiffies_64();
6966
	while (interrupt_pending(h)) {
6967
		raw_tag = get_next_completion(h, q);
6968
		while (raw_tag != FIFO_EMPTY)
6969
			raw_tag = next_command(h, q);
6970 6971 6972 6973
	}
	return IRQ_HANDLED;
}

6974
static irqreturn_t hpsa_msix_discard_completions(int irq, void *queue)
6975
{
6976
	struct ctlr_info *h = queue_to_hba(queue);
6977
	u32 raw_tag;
6978
	u8 q = *(u8 *) queue;
6979 6980 6981 6982

	if (ignore_bogus_interrupt(h))
		return IRQ_NONE;

6983
	h->last_intr_timestamp = get_jiffies_64();
6984
	raw_tag = get_next_completion(h, q);
6985
	while (raw_tag != FIFO_EMPTY)
6986
		raw_tag = next_command(h, q);
6987 6988 6989
	return IRQ_HANDLED;
}

6990
static irqreturn_t do_hpsa_intr_intx(int irq, void *queue)
6991
{
6992
	struct ctlr_info *h = queue_to_hba((u8 *) queue);
6993
	u32 raw_tag;
6994
	u8 q = *(u8 *) queue;
6995 6996 6997

	if (interrupt_not_for_us(h))
		return IRQ_NONE;
6998
	h->last_intr_timestamp = get_jiffies_64();
6999
	while (interrupt_pending(h)) {
7000
		raw_tag = get_next_completion(h, q);
7001
		while (raw_tag != FIFO_EMPTY) {
7002
			process_indexed_cmd(h, raw_tag);
7003
			raw_tag = next_command(h, q);
7004 7005 7006 7007 7008
		}
	}
	return IRQ_HANDLED;
}

7009
static irqreturn_t do_hpsa_intr_msi(int irq, void *queue)
7010
{
7011
	struct ctlr_info *h = queue_to_hba(queue);
7012
	u32 raw_tag;
7013
	u8 q = *(u8 *) queue;
7014

7015
	h->last_intr_timestamp = get_jiffies_64();
7016
	raw_tag = get_next_completion(h, q);
7017
	while (raw_tag != FIFO_EMPTY) {
7018
		process_indexed_cmd(h, raw_tag);
7019
		raw_tag = next_command(h, q);
7020 7021 7022 7023
	}
	return IRQ_HANDLED;
}

7024 7025 7026 7027
/* Send a message CDB to the firmware. Careful, this only works
 * in simple mode, not performant mode due to the tag lookup.
 * We only ever use this immediately after a controller reset.
 */
7028 7029
static int hpsa_message(struct pci_dev *pdev, unsigned char opcode,
			unsigned char type)
7030 7031 7032 7033 7034 7035 7036 7037 7038 7039
{
	struct Command {
		struct CommandListHeader CommandHeader;
		struct RequestBlock Request;
		struct ErrDescriptor ErrorDescriptor;
	};
	struct Command *cmd;
	static const size_t cmd_sz = sizeof(*cmd) +
					sizeof(cmd->ErrorDescriptor);
	dma_addr_t paddr64;
D
Don Brace 已提交
7040 7041
	__le32 paddr32;
	u32 tag;
7042 7043 7044 7045 7046 7047 7048 7049 7050 7051 7052 7053 7054 7055
	void __iomem *vaddr;
	int i, err;

	vaddr = pci_ioremap_bar(pdev, 0);
	if (vaddr == NULL)
		return -ENOMEM;

	/* The Inbound Post Queue only accepts 32-bit physical addresses for the
	 * CCISS commands, so they must be allocated from the lower 4GiB of
	 * memory.
	 */
	err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
	if (err) {
		iounmap(vaddr);
7056
		return err;
7057 7058 7059 7060 7061 7062 7063 7064 7065 7066 7067 7068
	}

	cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64);
	if (cmd == NULL) {
		iounmap(vaddr);
		return -ENOMEM;
	}

	/* This must fit, because of the 32-bit consistent DMA mask.  Also,
	 * although there's no guarantee, we assume that the address is at
	 * least 4-byte aligned (most likely, it's page-aligned).
	 */
D
Don Brace 已提交
7069
	paddr32 = cpu_to_le32(paddr64);
7070 7071 7072

	cmd->CommandHeader.ReplyQueue = 0;
	cmd->CommandHeader.SGList = 0;
7073
	cmd->CommandHeader.SGTotal = cpu_to_le16(0);
D
Don Brace 已提交
7074
	cmd->CommandHeader.tag = cpu_to_le64(paddr64);
7075 7076 7077
	memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);

	cmd->Request.CDBLen = 16;
7078 7079
	cmd->Request.type_attr_dir =
			TYPE_ATTR_DIR(TYPE_MSG, ATTR_HEADOFQUEUE, XFER_NONE);
7080 7081 7082 7083
	cmd->Request.Timeout = 0; /* Don't time out */
	cmd->Request.CDB[0] = opcode;
	cmd->Request.CDB[1] = type;
	memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */
7084
	cmd->ErrorDescriptor.Addr =
D
Don Brace 已提交
7085
			cpu_to_le64((le32_to_cpu(paddr32) + sizeof(*cmd)));
7086
	cmd->ErrorDescriptor.Len = cpu_to_le32(sizeof(struct ErrorInfo));
7087

D
Don Brace 已提交
7088
	writel(le32_to_cpu(paddr32), vaddr + SA5_REQUEST_PORT_OFFSET);
7089 7090 7091

	for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) {
		tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
D
Don Brace 已提交
7092
		if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr64)
7093 7094 7095 7096 7097 7098 7099 7100 7101 7102 7103 7104 7105 7106 7107 7108 7109 7110 7111 7112 7113 7114 7115 7116 7117 7118 7119 7120 7121 7122
			break;
		msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS);
	}

	iounmap(vaddr);

	/* we leak the DMA buffer here ... no choice since the controller could
	 *  still complete the command.
	 */
	if (i == HPSA_MSG_SEND_RETRY_LIMIT) {
		dev_err(&pdev->dev, "controller message %02x:%02x timed out\n",
			opcode, type);
		return -ETIMEDOUT;
	}

	pci_free_consistent(pdev, cmd_sz, cmd, paddr64);

	if (tag & HPSA_ERROR_BIT) {
		dev_err(&pdev->dev, "controller message %02x:%02x failed\n",
			opcode, type);
		return -EIO;
	}

	dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n",
		opcode, type);
	return 0;
}

#define hpsa_noop(p) hpsa_message(p, 3, 0)

7123
static int hpsa_controller_hard_reset(struct pci_dev *pdev,
D
Don Brace 已提交
7124
	void __iomem *vaddr, u32 use_doorbell)
7125 7126 7127 7128 7129 7130 7131 7132
{

	if (use_doorbell) {
		/* For everything after the P600, the PCI power state method
		 * of resetting the controller doesn't work, so we have this
		 * other way using the doorbell register.
		 */
		dev_info(&pdev->dev, "using doorbell to reset controller\n");
7133
		writel(use_doorbell, vaddr + SA5_DOORBELL);
7134

7135
		/* PMC hardware guys tell us we need a 10 second delay after
7136 7137 7138 7139
		 * doorbell reset and before any attempt to talk to the board
		 * at all to ensure that this actually works and doesn't fall
		 * over in some weird corner cases.
		 */
7140
		msleep(10000);
7141 7142 7143 7144 7145 7146 7147 7148 7149
	} else { /* Try to do it the PCI power state way */

		/* Quoting from the Open CISS Specification: "The Power
		 * Management Control/Status Register (CSR) controls the power
		 * state of the device.  The normal operating state is D0,
		 * CSR=00h.  The software off state is D3, CSR=03h.  To reset
		 * the controller, place the interface device in D3 then to D0,
		 * this causes a secondary PCI reset which will reset the
		 * controller." */
7150 7151 7152

		int rc = 0;

7153
		dev_info(&pdev->dev, "using PCI PM to reset controller\n");
7154

7155
		/* enter the D3hot power management state */
7156 7157 7158
		rc = pci_set_power_state(pdev, PCI_D3hot);
		if (rc)
			return rc;
7159 7160 7161 7162

		msleep(500);

		/* enter the D0 power management state */
7163 7164 7165
		rc = pci_set_power_state(pdev, PCI_D0);
		if (rc)
			return rc;
7166 7167 7168 7169 7170 7171 7172

		/*
		 * The P600 requires a small delay when changing states.
		 * Otherwise we may think the board did not reset and we bail.
		 * This for kdump only and is particular to the P600.
		 */
		msleep(500);
7173 7174 7175 7176
	}
	return 0;
}

7177
static void init_driver_version(char *driver_version, int len)
7178 7179
{
	memset(driver_version, 0, len);
7180
	strncpy(driver_version, HPSA " " HPSA_DRIVER_VERSION, len - 1);
7181 7182
}

7183
static int write_driver_ver_to_cfgtable(struct CfgTable __iomem *cfgtable)
7184 7185 7186 7187 7188 7189 7190 7191 7192 7193 7194 7195 7196 7197 7198
{
	char *driver_version;
	int i, size = sizeof(cfgtable->driver_version);

	driver_version = kmalloc(size, GFP_KERNEL);
	if (!driver_version)
		return -ENOMEM;

	init_driver_version(driver_version, size);
	for (i = 0; i < size; i++)
		writeb(driver_version[i], &cfgtable->driver_version[i]);
	kfree(driver_version);
	return 0;
}

7199 7200
static void read_driver_ver_from_cfgtable(struct CfgTable __iomem *cfgtable,
					  unsigned char *driver_ver)
7201 7202 7203 7204 7205 7206 7207
{
	int i;

	for (i = 0; i < sizeof(cfgtable->driver_version); i++)
		driver_ver[i] = readb(&cfgtable->driver_version[i]);
}

7208
static int controller_reset_failed(struct CfgTable __iomem *cfgtable)
7209 7210 7211 7212 7213 7214 7215 7216 7217 7218 7219 7220 7221 7222 7223 7224 7225 7226 7227
{

	char *driver_ver, *old_driver_ver;
	int rc, size = sizeof(cfgtable->driver_version);

	old_driver_ver = kmalloc(2 * size, GFP_KERNEL);
	if (!old_driver_ver)
		return -ENOMEM;
	driver_ver = old_driver_ver + size;

	/* After a reset, the 32 bytes of "driver version" in the cfgtable
	 * should have been changed, otherwise we know the reset failed.
	 */
	init_driver_version(old_driver_ver, size);
	read_driver_ver_from_cfgtable(cfgtable, driver_ver);
	rc = !memcmp(driver_ver, old_driver_ver, size);
	kfree(old_driver_ver);
	return rc;
}
7228
/* This does a hard reset of the controller using PCI power management
7229
 * states or the using the doorbell register.
7230
 */
7231
static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev, u32 board_id)
7232
{
7233 7234 7235 7236 7237
	u64 cfg_offset;
	u32 cfg_base_addr;
	u64 cfg_base_addr_index;
	void __iomem *vaddr;
	unsigned long paddr;
7238
	u32 misc_fw_support;
7239
	int rc;
7240
	struct CfgTable __iomem *cfgtable;
7241
	u32 use_doorbell;
7242
	u16 command_register;
7243

7244 7245
	/* For controllers as old as the P600, this is very nearly
	 * the same thing as
7246 7247 7248 7249 7250 7251
	 *
	 * pci_save_state(pci_dev);
	 * pci_set_power_state(pci_dev, PCI_D3hot);
	 * pci_set_power_state(pci_dev, PCI_D0);
	 * pci_restore_state(pci_dev);
	 *
7252 7253 7254
	 * For controllers newer than the P600, the pci power state
	 * method of resetting doesn't work so we have another way
	 * using the doorbell register.
7255
	 */
7256

7257 7258
	if (!ctlr_is_resettable(board_id)) {
		dev_warn(&pdev->dev, "Controller not resettable\n");
7259 7260
		return -ENODEV;
	}
7261 7262 7263 7264

	/* if controller is soft- but not hard resettable... */
	if (!ctlr_is_hard_resettable(board_id))
		return -ENOTSUPP; /* try soft reset later. */
7265

7266 7267 7268
	/* Save the PCI command register */
	pci_read_config_word(pdev, 4, &command_register);
	pci_save_state(pdev);
7269

7270 7271 7272 7273 7274 7275 7276
	/* find the first memory BAR, so we can find the cfg table */
	rc = hpsa_pci_find_memory_BAR(pdev, &paddr);
	if (rc)
		return rc;
	vaddr = remap_pci_mem(paddr, 0x250);
	if (!vaddr)
		return -ENOMEM;
7277

7278 7279 7280 7281 7282 7283 7284 7285 7286 7287 7288
	/* find cfgtable in order to check if reset via doorbell is supported */
	rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr,
					&cfg_base_addr_index, &cfg_offset);
	if (rc)
		goto unmap_vaddr;
	cfgtable = remap_pci_mem(pci_resource_start(pdev,
		       cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable));
	if (!cfgtable) {
		rc = -ENOMEM;
		goto unmap_vaddr;
	}
7289 7290
	rc = write_driver_ver_to_cfgtable(cfgtable);
	if (rc)
7291
		goto unmap_cfgtable;
7292

7293 7294 7295
	/* If reset via doorbell register is supported, use that.
	 * There are two such methods.  Favor the newest method.
	 */
7296
	misc_fw_support = readl(&cfgtable->misc_fw_support);
7297 7298 7299 7300 7301 7302
	use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2;
	if (use_doorbell) {
		use_doorbell = DOORBELL_CTLR_RESET2;
	} else {
		use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET;
		if (use_doorbell) {
7303 7304
			dev_warn(&pdev->dev,
				"Soft reset not supported. Firmware update is required.\n");
7305
			rc = -ENOTSUPP; /* try soft reset */
7306 7307 7308
			goto unmap_cfgtable;
		}
	}
7309

7310 7311 7312
	rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell);
	if (rc)
		goto unmap_cfgtable;
7313

7314 7315
	pci_restore_state(pdev);
	pci_write_config_word(pdev, 4, command_register);
7316

7317 7318 7319 7320
	/* Some devices (notably the HP Smart Array 5i Controller)
	   need a little pause here */
	msleep(HPSA_POST_RESET_PAUSE_MSECS);

7321 7322 7323
	rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY);
	if (rc) {
		dev_warn(&pdev->dev,
7324
			"Failed waiting for board to become ready after hard reset\n");
7325 7326 7327
		goto unmap_cfgtable;
	}

7328 7329 7330 7331
	rc = controller_reset_failed(vaddr);
	if (rc < 0)
		goto unmap_cfgtable;
	if (rc) {
7332 7333 7334
		dev_warn(&pdev->dev, "Unable to successfully reset "
			"controller. Will try soft reset.\n");
		rc = -ENOTSUPP;
7335
	} else {
7336
		dev_info(&pdev->dev, "board ready after hard reset.\n");
7337 7338 7339 7340 7341 7342 7343 7344
	}

unmap_cfgtable:
	iounmap(cfgtable);

unmap_vaddr:
	iounmap(vaddr);
	return rc;
7345 7346 7347 7348 7349 7350 7351
}

/*
 *  We cannot read the structure directly, for portability we must use
 *   the io functions.
 *   This is for debug only.
 */
D
Don Brace 已提交
7352
static void print_cfg_table(struct device *dev, struct CfgTable __iomem *tb)
7353
{
7354
#ifdef HPSA_DEBUG
7355 7356 7357 7358 7359 7360 7361 7362 7363 7364 7365 7366 7367 7368 7369 7370 7371 7372 7373 7374
	int i;
	char temp_name[17];

	dev_info(dev, "Controller Configuration information\n");
	dev_info(dev, "------------------------------------\n");
	for (i = 0; i < 4; i++)
		temp_name[i] = readb(&(tb->Signature[i]));
	temp_name[4] = '\0';
	dev_info(dev, "   Signature = %s\n", temp_name);
	dev_info(dev, "   Spec Number = %d\n", readl(&(tb->SpecValence)));
	dev_info(dev, "   Transport methods supported = 0x%x\n",
	       readl(&(tb->TransportSupport)));
	dev_info(dev, "   Transport methods active = 0x%x\n",
	       readl(&(tb->TransportActive)));
	dev_info(dev, "   Requested transport Method = 0x%x\n",
	       readl(&(tb->HostWrite.TransportRequest)));
	dev_info(dev, "   Coalesce Interrupt Delay = 0x%x\n",
	       readl(&(tb->HostWrite.CoalIntDelay)));
	dev_info(dev, "   Coalesce Interrupt Count = 0x%x\n",
	       readl(&(tb->HostWrite.CoalIntCount)));
7375
	dev_info(dev, "   Max outstanding commands = %d\n",
7376 7377 7378 7379 7380 7381 7382 7383 7384
	       readl(&(tb->CmdsOutMax)));
	dev_info(dev, "   Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
	for (i = 0; i < 16; i++)
		temp_name[i] = readb(&(tb->ServerName[i]));
	temp_name[16] = '\0';
	dev_info(dev, "   Server Name = %s\n", temp_name);
	dev_info(dev, "   Heartbeat Counter = 0x%x\n\n\n",
		readl(&(tb->HeartBeat)));
#endif				/* HPSA_DEBUG */
7385
}
7386 7387 7388 7389 7390 7391 7392 7393 7394 7395 7396 7397 7398 7399 7400 7401 7402 7403 7404 7405 7406 7407 7408 7409 7410 7411 7412 7413 7414 7415 7416 7417 7418 7419 7420 7421

static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
{
	int i, offset, mem_type, bar_type;

	if (pci_bar_addr == PCI_BASE_ADDRESS_0)	/* looking for BAR zero? */
		return 0;
	offset = 0;
	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
		bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
		if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
			offset += 4;
		else {
			mem_type = pci_resource_flags(pdev, i) &
			    PCI_BASE_ADDRESS_MEM_TYPE_MASK;
			switch (mem_type) {
			case PCI_BASE_ADDRESS_MEM_TYPE_32:
			case PCI_BASE_ADDRESS_MEM_TYPE_1M:
				offset += 4;	/* 32 bit */
				break;
			case PCI_BASE_ADDRESS_MEM_TYPE_64:
				offset += 8;
				break;
			default:	/* reserved in PCI 2.2 */
				dev_warn(&pdev->dev,
				       "base address is invalid\n");
				return -1;
				break;
			}
		}
		if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
			return i + 1;
	}
	return -1;
}

7422 7423 7424 7425 7426
static void hpsa_disable_interrupt_mode(struct ctlr_info *h)
{
	if (h->msix_vector) {
		if (h->pdev->msix_enabled)
			pci_disable_msix(h->pdev);
R
Robert Elliott 已提交
7427
		h->msix_vector = 0;
7428 7429 7430
	} else if (h->msi_vector) {
		if (h->pdev->msi_enabled)
			pci_disable_msi(h->pdev);
R
Robert Elliott 已提交
7431
		h->msi_vector = 0;
7432 7433 7434
	}
}

7435
/* If MSI/MSI-X is supported by the kernel we will try to enable it on
7436
 * controllers that are capable. If not, we use legacy INTx mode.
7437
 */
7438
static void hpsa_interrupt_mode(struct ctlr_info *h)
7439 7440
{
#ifdef CONFIG_PCI_MSI
7441 7442 7443 7444 7445 7446 7447
	int err, i;
	struct msix_entry hpsa_msix_entries[MAX_REPLY_QUEUES];

	for (i = 0; i < MAX_REPLY_QUEUES; i++) {
		hpsa_msix_entries[i].vector = 0;
		hpsa_msix_entries[i].entry = i;
	}
7448 7449

	/* Some boards advertise MSI but don't really support it */
7450 7451
	if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) ||
	    (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11))
7452
		goto default_int_mode;
7453
	if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) {
7454
		dev_info(&h->pdev->dev, "MSI-X capable controller\n");
7455
		h->msix_vector = MAX_REPLY_QUEUES;
7456 7457
		if (h->msix_vector > num_online_cpus())
			h->msix_vector = num_online_cpus();
7458 7459 7460 7461 7462 7463 7464
		err = pci_enable_msix_range(h->pdev, hpsa_msix_entries,
					    1, h->msix_vector);
		if (err < 0) {
			dev_warn(&h->pdev->dev, "MSI-X init failed %d\n", err);
			h->msix_vector = 0;
			goto single_msi_mode;
		} else if (err < h->msix_vector) {
7465
			dev_warn(&h->pdev->dev, "only %d MSI-X vectors "
7466 7467
			       "available\n", err);
		}
7468 7469 7470 7471
		h->msix_vector = err;
		for (i = 0; i < h->msix_vector; i++)
			h->intr[i] = hpsa_msix_entries[i].vector;
		return;
7472
	}
7473
single_msi_mode:
7474
	if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) {
7475
		dev_info(&h->pdev->dev, "MSI capable controller\n");
7476
		if (!pci_enable_msi(h->pdev))
7477 7478
			h->msi_vector = 1;
		else
7479
			dev_warn(&h->pdev->dev, "MSI init failed\n");
7480 7481 7482 7483
	}
default_int_mode:
#endif				/* CONFIG_PCI_MSI */
	/* if we get here we're going to use the default interrupt mode */
7484
	h->intr[h->intr_mode] = h->pdev->irq;
7485 7486
}

7487
static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
7488 7489 7490 7491 7492 7493 7494 7495 7496 7497 7498 7499 7500
{
	int i;
	u32 subsystem_vendor_id, subsystem_device_id;

	subsystem_vendor_id = pdev->subsystem_vendor;
	subsystem_device_id = pdev->subsystem_device;
	*board_id = ((subsystem_device_id << 16) & 0xffff0000) |
		    subsystem_vendor_id;

	for (i = 0; i < ARRAY_SIZE(products); i++)
		if (*board_id == products[i].board_id)
			return i;

7501 7502 7503
	if ((subsystem_vendor_id != PCI_VENDOR_ID_HP &&
		subsystem_vendor_id != PCI_VENDOR_ID_COMPAQ) ||
		!hpsa_allow_any) {
7504 7505 7506 7507 7508 7509 7510
		dev_warn(&pdev->dev, "unrecognized board ID: "
			"0x%08x, ignoring.\n", *board_id);
			return -ENODEV;
	}
	return ARRAY_SIZE(products) - 1; /* generic unknown smart array */
}

7511 7512
static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
				    unsigned long *memory_bar)
7513 7514 7515 7516
{
	int i;

	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++)
7517
		if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
7518
			/* addressing mode bits already removed */
7519 7520
			*memory_bar = pci_resource_start(pdev, i);
			dev_dbg(&pdev->dev, "memory BAR = %lx\n",
7521 7522 7523
				*memory_bar);
			return 0;
		}
7524
	dev_warn(&pdev->dev, "no memory BAR found\n");
7525 7526 7527
	return -ENODEV;
}

7528 7529
static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
				     int wait_for_ready)
7530
{
7531
	int i, iterations;
7532
	u32 scratchpad;
7533 7534 7535 7536
	if (wait_for_ready)
		iterations = HPSA_BOARD_READY_ITERATIONS;
	else
		iterations = HPSA_BOARD_NOT_READY_ITERATIONS;
7537

7538 7539 7540 7541 7542 7543 7544 7545 7546
	for (i = 0; i < iterations; i++) {
		scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET);
		if (wait_for_ready) {
			if (scratchpad == HPSA_FIRMWARE_READY)
				return 0;
		} else {
			if (scratchpad != HPSA_FIRMWARE_READY)
				return 0;
		}
7547 7548
		msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
	}
7549
	dev_warn(&pdev->dev, "board not ready, timed out.\n");
7550 7551 7552
	return -ENODEV;
}

7553 7554 7555
static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
			       u32 *cfg_base_addr, u64 *cfg_base_addr_index,
			       u64 *cfg_offset)
7556 7557 7558 7559 7560 7561 7562 7563 7564 7565 7566 7567
{
	*cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET);
	*cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET);
	*cfg_base_addr &= (u32) 0x0000ffff;
	*cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr);
	if (*cfg_base_addr_index == -1) {
		dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n");
		return -ENODEV;
	}
	return 0;
}

R
Robert Elliott 已提交
7568 7569
static void hpsa_free_cfgtables(struct ctlr_info *h)
{
R
Robert Elliott 已提交
7570
	if (h->transtable) {
R
Robert Elliott 已提交
7571
		iounmap(h->transtable);
R
Robert Elliott 已提交
7572 7573 7574
		h->transtable = NULL;
	}
	if (h->cfgtable) {
R
Robert Elliott 已提交
7575
		iounmap(h->cfgtable);
R
Robert Elliott 已提交
7576 7577
		h->cfgtable = NULL;
	}
R
Robert Elliott 已提交
7578 7579 7580 7581 7582
}

/* Find and map CISS config table and transfer table
+ * several items must be unmapped (freed) later
+ * */
7583
static int hpsa_find_cfgtables(struct ctlr_info *h)
7584
{
7585 7586 7587
	u64 cfg_offset;
	u32 cfg_base_addr;
	u64 cfg_base_addr_index;
7588
	u32 trans_offset;
7589
	int rc;
7590

7591 7592 7593 7594
	rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
		&cfg_base_addr_index, &cfg_offset);
	if (rc)
		return rc;
7595
	h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
7596
		       cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable));
7597 7598
	if (!h->cfgtable) {
		dev_err(&h->pdev->dev, "Failed mapping cfgtable\n");
7599
		return -ENOMEM;
7600
	}
7601 7602 7603
	rc = write_driver_ver_to_cfgtable(h->cfgtable);
	if (rc)
		return rc;
7604
	/* Find performant mode table. */
7605
	trans_offset = readl(&h->cfgtable->TransMethodOffset);
7606 7607 7608
	h->transtable = remap_pci_mem(pci_resource_start(h->pdev,
				cfg_base_addr_index)+cfg_offset+trans_offset,
				sizeof(*h->transtable));
R
Robert Elliott 已提交
7609 7610 7611
	if (!h->transtable) {
		dev_err(&h->pdev->dev, "Failed mapping transfer table\n");
		hpsa_free_cfgtables(h);
7612
		return -ENOMEM;
R
Robert Elliott 已提交
7613
	}
7614 7615 7616
	return 0;
}

7617
static void hpsa_get_max_perf_mode_cmds(struct ctlr_info *h)
7618
{
7619 7620 7621 7622
#define MIN_MAX_COMMANDS 16
	BUILD_BUG_ON(MIN_MAX_COMMANDS <= HPSA_NRESERVED_CMDS);

	h->max_commands = readl(&h->cfgtable->MaxPerformantModeCommands);
7623 7624 7625 7626 7627

	/* Limit commands in memory limited kdump scenario. */
	if (reset_devices && h->max_commands > 32)
		h->max_commands = 32;

7628 7629 7630 7631 7632 7633
	if (h->max_commands < MIN_MAX_COMMANDS) {
		dev_warn(&h->pdev->dev,
			"Controller reports max supported commands of %d Using %d instead. Ensure that firmware is up to date.\n",
			h->max_commands,
			MIN_MAX_COMMANDS);
		h->max_commands = MIN_MAX_COMMANDS;
7634 7635 7636
	}
}

7637 7638 7639 7640 7641 7642 7643 7644 7645
/* If the controller reports that the total max sg entries is greater than 512,
 * then we know that chained SG blocks work.  (Original smart arrays did not
 * support chained SG blocks and would return zero for max sg entries.)
 */
static int hpsa_supports_chained_sg_blocks(struct ctlr_info *h)
{
	return h->maxsgentries > 512;
}

7646 7647 7648 7649
/* Interrogate the hardware for some limits:
 * max commands, max SG elements without chaining, and with chaining,
 * SG chain block size, etc.
 */
7650
static void hpsa_find_board_params(struct ctlr_info *h)
7651
{
7652
	hpsa_get_max_perf_mode_cmds(h);
7653
	h->nr_cmds = h->max_commands;
7654
	h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements));
7655
	h->fw_support = readl(&(h->cfgtable->misc_fw_support));
7656 7657
	if (hpsa_supports_chained_sg_blocks(h)) {
		/* Limit in-command s/g elements to 32 save dma'able memory. */
7658
		h->max_cmd_sg_entries = 32;
7659
		h->chainsize = h->maxsgentries - h->max_cmd_sg_entries;
7660 7661
		h->maxsgentries--; /* save one for chain pointer */
	} else {
7662 7663 7664 7665 7666 7667
		/*
		 * Original smart arrays supported at most 31 s/g entries
		 * embedded inline in the command (trying to use more
		 * would lock up the controller)
		 */
		h->max_cmd_sg_entries = 31;
7668
		h->maxsgentries = 31; /* default to traditional values */
7669
		h->chainsize = 0;
7670
	}
7671 7672 7673

	/* Find out what task management functions are supported and cache */
	h->TMFSupportFlags = readl(&(h->cfgtable->TMFSupportFlags));
7674 7675 7676 7677
	if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags))
		dev_warn(&h->pdev->dev, "Physical aborts not supported\n");
	if (!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
		dev_warn(&h->pdev->dev, "Logical aborts not supported\n");
7678 7679
	if (!(HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags))
		dev_warn(&h->pdev->dev, "HP SSD Smart Path aborts not supported\n");
7680 7681
}

7682 7683
static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)
{
A
Akinobu Mita 已提交
7684
	if (!check_signature(h->cfgtable->Signature, "CISS", 4)) {
7685
		dev_err(&h->pdev->dev, "not a valid CISS config table\n");
7686 7687 7688 7689 7690
		return false;
	}
	return true;
}

7691
static inline void hpsa_set_driver_support_bits(struct ctlr_info *h)
7692
{
7693
	u32 driver_support;
7694

7695
	driver_support = readl(&(h->cfgtable->driver_support));
A
Arnd Bergmann 已提交
7696 7697
	/* Need to enable prefetch in the SCSI core for 6400 in x86 */
#ifdef CONFIG_X86
7698
	driver_support |= ENABLE_SCSI_PREFETCH;
7699
#endif
7700 7701
	driver_support |= ENABLE_UNIT_ATTN;
	writel(driver_support, &(h->cfgtable->driver_support));
7702 7703
}

7704 7705 7706 7707 7708 7709 7710 7711 7712 7713 7714 7715 7716 7717
/* Disable DMA prefetch for the P600.  Otherwise an ASIC bug may result
 * in a prefetch beyond physical memory.
 */
static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h)
{
	u32 dma_prefetch;

	if (h->board_id != 0x3225103C)
		return;
	dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
	dma_prefetch |= 0x8000;
	writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
}

7718
static int hpsa_wait_for_clear_event_notify_ack(struct ctlr_info *h)
7719 7720 7721 7722 7723
{
	int i;
	u32 doorbell_value;
	unsigned long flags;
	/* wait until the clear_event_notify bit 6 is cleared by controller. */
7724
	for (i = 0; i < MAX_CLEAR_EVENT_WAIT; i++) {
7725 7726 7727 7728
		spin_lock_irqsave(&h->lock, flags);
		doorbell_value = readl(h->vaddr + SA5_DOORBELL);
		spin_unlock_irqrestore(&h->lock, flags);
		if (!(doorbell_value & DOORBELL_CLEAR_EVENTS))
7729
			goto done;
7730
		/* delay and try again */
7731
		msleep(CLEAR_EVENT_WAIT_INTERVAL);
7732
	}
7733 7734 7735
	return -ENODEV;
done:
	return 0;
7736 7737
}

7738
static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h)
7739 7740
{
	int i;
7741 7742
	u32 doorbell_value;
	unsigned long flags;
7743 7744 7745 7746 7747

	/* under certain very rare conditions, this can take awhile.
	 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
	 * as we enter this code.)
	 */
7748
	for (i = 0; i < MAX_MODE_CHANGE_WAIT; i++) {
7749 7750
		if (h->remove_in_progress)
			goto done;
7751 7752 7753
		spin_lock_irqsave(&h->lock, flags);
		doorbell_value = readl(h->vaddr + SA5_DOORBELL);
		spin_unlock_irqrestore(&h->lock, flags);
D
Dan Carpenter 已提交
7754
		if (!(doorbell_value & CFGTBL_ChangeReq))
7755
			goto done;
7756
		/* delay and try again */
7757
		msleep(MODE_CHANGE_WAIT_INTERVAL);
7758
	}
7759 7760 7761
	return -ENODEV;
done:
	return 0;
7762 7763
}

7764
/* return -ENODEV or other reason on error, 0 on success */
7765
static int hpsa_enter_simple_mode(struct ctlr_info *h)
7766 7767 7768 7769 7770 7771 7772 7773
{
	u32 trans_support;

	trans_support = readl(&(h->cfgtable->TransportSupport));
	if (!(trans_support & SIMPLE_MODE))
		return -ENOTSUPP;

	h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
7774

7775 7776
	/* Update the field, and then ring the doorbell */
	writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
7777
	writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
7778
	writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
7779 7780
	if (hpsa_wait_for_mode_change_ack(h))
		goto error;
7781
	print_cfg_table(&h->pdev->dev, h->cfgtable);
7782 7783
	if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
		goto error;
7784
	h->transMethod = CFGTBL_Trans_Simple;
7785
	return 0;
7786
error:
7787
	dev_err(&h->pdev->dev, "failed to enter simple mode\n");
7788
	return -ENODEV;
7789 7790
}

R
Robert Elliott 已提交
7791 7792 7793 7794 7795
/* free items allocated or mapped by hpsa_pci_init */
static void hpsa_free_pci_init(struct ctlr_info *h)
{
	hpsa_free_cfgtables(h);			/* pci_init 4 */
	iounmap(h->vaddr);			/* pci_init 3 */
R
Robert Elliott 已提交
7796
	h->vaddr = NULL;
R
Robert Elliott 已提交
7797
	hpsa_disable_interrupt_mode(h);		/* pci_init 2 */
7798 7799 7800 7801
	/*
	 * call pci_disable_device before pci_release_regions per
	 * Documentation/PCI/pci.txt
	 */
R
Robert Elliott 已提交
7802
	pci_disable_device(h->pdev);		/* pci_init 1 */
7803
	pci_release_regions(h->pdev);		/* pci_init 2 */
R
Robert Elliott 已提交
7804 7805 7806
}

/* several items must be freed later */
7807
static int hpsa_pci_init(struct ctlr_info *h)
7808
{
7809
	int prod_index, err;
7810

7811 7812
	prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id);
	if (prod_index < 0)
7813
		return prod_index;
7814 7815
	h->product_name = products[prod_index].product_name;
	h->access = *(products[prod_index].access);
7816

S
Stephen Cameron 已提交
7817 7818 7819
	h->needs_abort_tags_swizzled =
		ctlr_needs_abort_tags_swizzled(h->board_id);

M
Matthew Garrett 已提交
7820 7821 7822
	pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S |
			       PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);

7823
	err = pci_enable_device(h->pdev);
7824
	if (err) {
R
Robert Elliott 已提交
7825
		dev_err(&h->pdev->dev, "failed to enable PCI device\n");
7826
		pci_disable_device(h->pdev);
7827 7828 7829
		return err;
	}

7830
	err = pci_request_regions(h->pdev, HPSA);
7831
	if (err) {
7832
		dev_err(&h->pdev->dev,
R
Robert Elliott 已提交
7833
			"failed to obtain PCI resources\n");
7834 7835
		pci_disable_device(h->pdev);
		return err;
7836
	}
7837 7838 7839

	pci_set_master(h->pdev);

7840
	hpsa_interrupt_mode(h);
7841
	err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr);
7842
	if (err)
R
Robert Elliott 已提交
7843
		goto clean2;	/* intmode+region, pci */
7844
	h->vaddr = remap_pci_mem(h->paddr, 0x250);
7845
	if (!h->vaddr) {
R
Robert Elliott 已提交
7846
		dev_err(&h->pdev->dev, "failed to remap PCI mem\n");
7847
		err = -ENOMEM;
R
Robert Elliott 已提交
7848
		goto clean2;	/* intmode+region, pci */
7849
	}
7850
	err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
7851
	if (err)
R
Robert Elliott 已提交
7852
		goto clean3;	/* vaddr, intmode+region, pci */
7853 7854
	err = hpsa_find_cfgtables(h);
	if (err)
R
Robert Elliott 已提交
7855
		goto clean3;	/* vaddr, intmode+region, pci */
7856
	hpsa_find_board_params(h);
7857

7858
	if (!hpsa_CISS_signature_present(h)) {
7859
		err = -ENODEV;
R
Robert Elliott 已提交
7860
		goto clean4;	/* cfgtables, vaddr, intmode+region, pci */
7861
	}
7862
	hpsa_set_driver_support_bits(h);
7863
	hpsa_p600_dma_prefetch_quirk(h);
7864 7865
	err = hpsa_enter_simple_mode(h);
	if (err)
R
Robert Elliott 已提交
7866
		goto clean4;	/* cfgtables, vaddr, intmode+region, pci */
7867 7868
	return 0;

R
Robert Elliott 已提交
7869 7870 7871 7872
clean4:	/* cfgtables, vaddr, intmode+region, pci */
	hpsa_free_cfgtables(h);
clean3:	/* vaddr, intmode+region, pci */
	iounmap(h->vaddr);
R
Robert Elliott 已提交
7873
	h->vaddr = NULL;
R
Robert Elliott 已提交
7874 7875
clean2:	/* intmode+region, pci */
	hpsa_disable_interrupt_mode(h);
7876 7877 7878 7879
	/*
	 * call pci_disable_device before pci_release_regions per
	 * Documentation/PCI/pci.txt
	 */
R
Robert Elliott 已提交
7880
	pci_disable_device(h->pdev);
7881
	pci_release_regions(h->pdev);
7882 7883 7884
	return err;
}

7885
static void hpsa_hba_inquiry(struct ctlr_info *h)
7886 7887 7888 7889 7890 7891 7892 7893 7894 7895 7896 7897 7898 7899 7900
{
	int rc;

#define HBA_INQUIRY_BYTE_COUNT 64
	h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL);
	if (!h->hba_inquiry_data)
		return;
	rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0,
		h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT);
	if (rc != 0) {
		kfree(h->hba_inquiry_data);
		h->hba_inquiry_data = NULL;
	}
}

7901
static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id)
7902
{
7903
	int rc, i;
7904
	void __iomem *vaddr;
7905 7906 7907 7908

	if (!reset_devices)
		return 0;

7909 7910 7911 7912 7913 7914 7915 7916 7917 7918 7919 7920 7921 7922 7923 7924
	/* kdump kernel is loading, we don't know in which state is
	 * the pci interface. The dev->enable_cnt is equal zero
	 * so we call enable+disable, wait a while and switch it on.
	 */
	rc = pci_enable_device(pdev);
	if (rc) {
		dev_warn(&pdev->dev, "Failed to enable PCI device\n");
		return -ENODEV;
	}
	pci_disable_device(pdev);
	msleep(260);			/* a randomly chosen number */
	rc = pci_enable_device(pdev);
	if (rc) {
		dev_warn(&pdev->dev, "failed to enable device.\n");
		return -ENODEV;
	}
7925

7926
	pci_set_master(pdev);
7927

7928 7929 7930 7931 7932 7933 7934 7935
	vaddr = pci_ioremap_bar(pdev, 0);
	if (vaddr == NULL) {
		rc = -ENOMEM;
		goto out_disable;
	}
	writel(SA5_INTR_OFF, vaddr + SA5_REPLY_INTR_MASK_OFFSET);
	iounmap(vaddr);

7936
	/* Reset the controller with a PCI power-cycle or via doorbell */
7937
	rc = hpsa_kdump_hard_reset_controller(pdev, board_id);
7938

7939 7940
	/* -ENOTSUPP here means we cannot reset the controller
	 * but it's already (and still) up and running in
7941 7942
	 * "performant mode".  Or, it might be 640x, which can't reset
	 * due to concerns about shared bbwc between 6402/6404 pair.
7943
	 */
7944
	if (rc)
7945
		goto out_disable;
7946 7947

	/* Now try to get the controller to respond to a no-op */
7948
	dev_info(&pdev->dev, "Waiting for controller to respond to no-op\n");
7949 7950 7951 7952 7953 7954 7955
	for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) {
		if (hpsa_noop(pdev) == 0)
			break;
		else
			dev_warn(&pdev->dev, "no-op failed%s\n",
					(i < 11 ? "; re-trying" : ""));
	}
7956 7957 7958 7959 7960

out_disable:

	pci_disable_device(pdev);
	return rc;
7961 7962
}

7963 7964 7965
static void hpsa_free_cmd_pool(struct ctlr_info *h)
{
	kfree(h->cmd_pool_bits);
R
Robert Elliott 已提交
7966 7967
	h->cmd_pool_bits = NULL;
	if (h->cmd_pool) {
7968 7969 7970 7971
		pci_free_consistent(h->pdev,
				h->nr_cmds * sizeof(struct CommandList),
				h->cmd_pool,
				h->cmd_pool_dhandle);
R
Robert Elliott 已提交
7972 7973 7974 7975
		h->cmd_pool = NULL;
		h->cmd_pool_dhandle = 0;
	}
	if (h->errinfo_pool) {
7976 7977 7978 7979
		pci_free_consistent(h->pdev,
				h->nr_cmds * sizeof(struct ErrorInfo),
				h->errinfo_pool,
				h->errinfo_pool_dhandle);
R
Robert Elliott 已提交
7980 7981 7982
		h->errinfo_pool = NULL;
		h->errinfo_pool_dhandle = 0;
	}
7983 7984
}

7985
static int hpsa_alloc_cmd_pool(struct ctlr_info *h)
7986 7987 7988 7989 7990 7991 7992 7993 7994 7995 7996 7997 7998 7999
{
	h->cmd_pool_bits = kzalloc(
		DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) *
		sizeof(unsigned long), GFP_KERNEL);
	h->cmd_pool = pci_alloc_consistent(h->pdev,
		    h->nr_cmds * sizeof(*h->cmd_pool),
		    &(h->cmd_pool_dhandle));
	h->errinfo_pool = pci_alloc_consistent(h->pdev,
		    h->nr_cmds * sizeof(*h->errinfo_pool),
		    &(h->errinfo_pool_dhandle));
	if ((h->cmd_pool_bits == NULL)
	    || (h->cmd_pool == NULL)
	    || (h->errinfo_pool == NULL)) {
		dev_err(&h->pdev->dev, "out of memory in %s", __func__);
8000
		goto clean_up;
8001
	}
8002
	hpsa_preinitialize_commands(h);
8003
	return 0;
8004 8005 8006
clean_up:
	hpsa_free_cmd_pool(h);
	return -ENOMEM;
8007 8008
}

8009 8010
static void hpsa_irq_affinity_hints(struct ctlr_info *h)
{
8011
	int i, cpu;
8012 8013 8014

	cpu = cpumask_first(cpu_online_mask);
	for (i = 0; i < h->msix_vector; i++) {
8015
		irq_set_affinity_hint(h->intr[i], get_cpu_mask(cpu));
8016 8017 8018 8019
		cpu = cpumask_next(cpu, cpu_online_mask);
	}
}

8020 8021 8022 8023 8024 8025 8026 8027 8028 8029
/* clear affinity hints and free MSI-X, MSI, or legacy INTx vectors */
static void hpsa_free_irqs(struct ctlr_info *h)
{
	int i;

	if (!h->msix_vector || h->intr_mode != PERF_MODE_INT) {
		/* Single reply queue, only one irq to free */
		i = h->intr_mode;
		irq_set_affinity_hint(h->intr[i], NULL);
		free_irq(h->intr[i], &h->q[i]);
R
Robert Elliott 已提交
8030
		h->q[i] = 0;
8031 8032 8033 8034 8035 8036
		return;
	}

	for (i = 0; i < h->msix_vector; i++) {
		irq_set_affinity_hint(h->intr[i], NULL);
		free_irq(h->intr[i], &h->q[i]);
R
Robert Elliott 已提交
8037
		h->q[i] = 0;
8038
	}
8039 8040
	for (; i < MAX_REPLY_QUEUES; i++)
		h->q[i] = 0;
8041 8042
}

8043 8044
/* returns 0 on success; cleans up and returns -Enn on error */
static int hpsa_request_irqs(struct ctlr_info *h,
8045 8046 8047
	irqreturn_t (*msixhandler)(int, void *),
	irqreturn_t (*intxhandler)(int, void *))
{
8048
	int rc, i;
8049

8050 8051 8052 8053 8054 8055 8056
	/*
	 * initialize h->q[x] = x so that interrupt handlers know which
	 * queue to process.
	 */
	for (i = 0; i < MAX_REPLY_QUEUES; i++)
		h->q[i] = (u8) i;

8057
	if (h->intr_mode == PERF_MODE_INT && h->msix_vector > 0) {
8058
		/* If performant mode and MSI-X, use multiple reply queues */
8059
		for (i = 0; i < h->msix_vector; i++) {
8060
			sprintf(h->intrname[i], "%s-msix%d", h->devname, i);
8061
			rc = request_irq(h->intr[i], msixhandler,
8062
					0, h->intrname[i],
8063
					&h->q[i]);
8064 8065 8066 8067 8068 8069 8070 8071 8072 8073 8074 8075 8076 8077 8078
			if (rc) {
				int j;

				dev_err(&h->pdev->dev,
					"failed to get irq %d for %s\n",
				       h->intr[i], h->devname);
				for (j = 0; j < i; j++) {
					free_irq(h->intr[j], &h->q[j]);
					h->q[j] = 0;
				}
				for (; j < MAX_REPLY_QUEUES; j++)
					h->q[j] = 0;
				return rc;
			}
		}
8079
		hpsa_irq_affinity_hints(h);
8080 8081
	} else {
		/* Use single reply pool */
8082
		if (h->msix_vector > 0 || h->msi_vector) {
8083 8084 8085 8086 8087 8088
			if (h->msix_vector)
				sprintf(h->intrname[h->intr_mode],
					"%s-msix", h->devname);
			else
				sprintf(h->intrname[h->intr_mode],
					"%s-msi", h->devname);
8089
			rc = request_irq(h->intr[h->intr_mode],
8090 8091
				msixhandler, 0,
				h->intrname[h->intr_mode],
8092 8093
				&h->q[h->intr_mode]);
		} else {
8094 8095
			sprintf(h->intrname[h->intr_mode],
				"%s-intx", h->devname);
8096
			rc = request_irq(h->intr[h->intr_mode],
8097 8098
				intxhandler, IRQF_SHARED,
				h->intrname[h->intr_mode],
8099 8100
				&h->q[h->intr_mode]);
		}
R
Robert Elliott 已提交
8101
		irq_set_affinity_hint(h->intr[h->intr_mode], NULL);
8102
	}
8103
	if (rc) {
R
Robert Elliott 已提交
8104
		dev_err(&h->pdev->dev, "failed to get irq %d for %s\n",
8105
		       h->intr[h->intr_mode], h->devname);
R
Robert Elliott 已提交
8106
		hpsa_free_irqs(h);
8107 8108 8109 8110 8111
		return -ENODEV;
	}
	return 0;
}

8112
static int hpsa_kdump_soft_reset(struct ctlr_info *h)
8113
{
8114
	int rc;
8115
	hpsa_send_host_reset(h, RAID_CTLR_LUNID, HPSA_RESET_TYPE_CONTROLLER);
8116 8117

	dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n");
8118 8119
	rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY);
	if (rc) {
8120
		dev_warn(&h->pdev->dev, "Soft reset had no effect.\n");
8121
		return rc;
8122 8123 8124
	}

	dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n");
8125 8126
	rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
	if (rc) {
8127 8128
		dev_warn(&h->pdev->dev, "Board failed to become ready "
			"after soft reset.\n");
8129
		return rc;
8130 8131 8132 8133 8134
	}

	return 0;
}

8135 8136 8137 8138 8139 8140 8141
static void hpsa_free_reply_queues(struct ctlr_info *h)
{
	int i;

	for (i = 0; i < h->nreply_queues; i++) {
		if (!h->reply_queue[i].head)
			continue;
8142 8143 8144 8145
		pci_free_consistent(h->pdev,
					h->reply_queue_size,
					h->reply_queue[i].head,
					h->reply_queue[i].busaddr);
8146 8147 8148
		h->reply_queue[i].head = NULL;
		h->reply_queue[i].busaddr = 0;
	}
R
Robert Elliott 已提交
8149
	h->reply_queue_size = 0;
8150 8151
}

8152 8153
static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h)
{
R
Robert Elliott 已提交
8154 8155 8156 8157
	hpsa_free_performant_mode(h);		/* init_one 7 */
	hpsa_free_sg_chain_blocks(h);		/* init_one 6 */
	hpsa_free_cmd_pool(h);			/* init_one 5 */
	hpsa_free_irqs(h);			/* init_one 4 */
8158 8159 8160
	scsi_host_put(h->scsi_host);		/* init_one 3 */
	h->scsi_host = NULL;			/* init_one 3 */
	hpsa_free_pci_init(h);			/* init_one 2_5 */
8161 8162 8163 8164 8165 8166 8167 8168 8169 8170
	free_percpu(h->lockup_detected);	/* init_one 2 */
	h->lockup_detected = NULL;		/* init_one 2 */
	if (h->resubmit_wq) {
		destroy_workqueue(h->resubmit_wq);	/* init_one 1 */
		h->resubmit_wq = NULL;
	}
	if (h->rescan_ctlr_wq) {
		destroy_workqueue(h->rescan_ctlr_wq);
		h->rescan_ctlr_wq = NULL;
	}
R
Robert Elliott 已提交
8171
	kfree(h);				/* init_one 1 */
8172 8173
}

8174
/* Called when controller lockup detected. */
8175
static void fail_all_outstanding_cmds(struct ctlr_info *h)
8176
{
8177 8178
	int i, refcount;
	struct CommandList *c;
8179
	int failcount = 0;
8180

8181
	flush_workqueue(h->resubmit_wq); /* ensure all cmds are fully built */
8182 8183
	for (i = 0; i < h->nr_cmds; i++) {
		c = h->cmd_pool + i;
8184 8185
		refcount = atomic_inc_return(&c->refcount);
		if (refcount > 1) {
8186
			c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
8187
			finish_cmd(c);
8188
			atomic_dec(&h->commands_outstanding);
8189
			failcount++;
8190 8191
		}
		cmd_free(h, c);
8192
	}
8193 8194
	dev_warn(&h->pdev->dev,
		"failed %d commands in fail_all\n", failcount);
8195 8196
}

8197 8198
static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value)
{
8199
	int cpu;
8200

8201
	for_each_online_cpu(cpu) {
8202 8203 8204 8205 8206 8207 8208
		u32 *lockup_detected;
		lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
		*lockup_detected = value;
	}
	wmb(); /* be sure the per-cpu variables are out to memory */
}

8209 8210 8211
static void controller_lockup_detected(struct ctlr_info *h)
{
	unsigned long flags;
8212
	u32 lockup_detected;
8213 8214 8215

	h->access.set_intr_mask(h, HPSA_INTR_OFF);
	spin_lock_irqsave(&h->lock, flags);
8216 8217 8218 8219
	lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
	if (!lockup_detected) {
		/* no heartbeat, but controller gave us a zero. */
		dev_warn(&h->pdev->dev,
8220 8221
			"lockup detected after %d but scratchpad register is zero\n",
			h->heartbeat_sample_interval / HZ);
8222 8223 8224
		lockup_detected = 0xffffffff;
	}
	set_lockup_detected_for_all_cpus(h, lockup_detected);
8225
	spin_unlock_irqrestore(&h->lock, flags);
8226 8227
	dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x after %d\n",
			lockup_detected, h->heartbeat_sample_interval / HZ);
8228
	pci_disable_device(h->pdev);
8229
	fail_all_outstanding_cmds(h);
8230 8231
}

8232
static int detect_controller_lockup(struct ctlr_info *h)
8233 8234 8235 8236 8237 8238 8239 8240
{
	u64 now;
	u32 heartbeat;
	unsigned long flags;

	now = get_jiffies_64();
	/* If we've received an interrupt recently, we're ok. */
	if (time_after64(h->last_intr_timestamp +
8241
				(h->heartbeat_sample_interval), now))
8242
		return false;
8243 8244 8245 8246 8247 8248 8249

	/*
	 * If we've already checked the heartbeat recently, we're ok.
	 * This could happen if someone sends us a signal. We
	 * otherwise don't care about signals in this thread.
	 */
	if (time_after64(h->last_heartbeat_timestamp +
8250
				(h->heartbeat_sample_interval), now))
8251
		return false;
8252 8253 8254 8255 8256 8257 8258

	/* If heartbeat has not changed since we last looked, we're not ok. */
	spin_lock_irqsave(&h->lock, flags);
	heartbeat = readl(&h->cfgtable->HeartBeat);
	spin_unlock_irqrestore(&h->lock, flags);
	if (h->last_heartbeat == heartbeat) {
		controller_lockup_detected(h);
8259
		return true;
8260 8261 8262 8263 8264
	}

	/* We're ok. */
	h->last_heartbeat = heartbeat;
	h->last_heartbeat_timestamp = now;
8265
	return false;
8266 8267
}

8268
static void hpsa_ack_ctlr_events(struct ctlr_info *h)
8269 8270 8271 8272
{
	int i;
	char *event_type;

8273 8274 8275
	if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
		return;

8276
	/* Ask the controller to clear the events we're handling. */
8277 8278
	if ((h->transMethod & (CFGTBL_Trans_io_accel1
			| CFGTBL_Trans_io_accel2)) &&
8279 8280 8281 8282 8283 8284 8285 8286 8287
		(h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE ||
		 h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)) {

		if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE)
			event_type = "state change";
		if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)
			event_type = "configuration change";
		/* Stop sending new RAID offload reqs via the IO accelerator */
		scsi_block_requests(h->scsi_host);
8288
		for (i = 0; i < h->ndevices; i++) {
8289
			h->dev[i]->offload_enabled = 0;
8290 8291
			h->dev[i]->offload_to_be_enabled = 0;
		}
8292
		hpsa_drain_accel_commands(h);
8293 8294 8295 8296 8297 8298 8299 8300 8301 8302 8303 8304 8305 8306 8307 8308 8309 8310 8311 8312
		/* Set 'accelerator path config change' bit */
		dev_warn(&h->pdev->dev,
			"Acknowledging event: 0x%08x (HP SSD Smart Path %s)\n",
			h->events, event_type);
		writel(h->events, &(h->cfgtable->clear_event_notify));
		/* Set the "clear event notify field update" bit 6 */
		writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
		/* Wait until ctlr clears 'clear event notify field', bit 6 */
		hpsa_wait_for_clear_event_notify_ack(h);
		scsi_unblock_requests(h->scsi_host);
	} else {
		/* Acknowledge controller notification events. */
		writel(h->events, &(h->cfgtable->clear_event_notify));
		writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
		hpsa_wait_for_clear_event_notify_ack(h);
#if 0
		writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
		hpsa_wait_for_mode_change_ack(h);
#endif
	}
8313
	return;
8314 8315 8316 8317
}

/* Check a register on the controller to see if there are configuration
 * changes (added/changed/removed logical drives, etc.) which mean that
8318 8319
 * we should rescan the controller for devices.
 * Also check flag for driver-initiated rescan.
8320
 */
8321
static int hpsa_ctlr_needs_rescan(struct ctlr_info *h)
8322
{
D
Don Brace 已提交
8323 8324 8325 8326 8327
	if (h->drv_req_rescan) {
		h->drv_req_rescan = 0;
		return 1;
	}

8328
	if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
8329
		return 0;
8330 8331

	h->events = readl(&(h->cfgtable->event_notify));
8332 8333
	return h->events & RESCAN_REQUIRED_EVENT_BITS;
}
8334

8335 8336 8337 8338 8339 8340 8341 8342 8343 8344 8345 8346 8347 8348
/*
 * Check if any of the offline devices have become ready
 */
static int hpsa_offline_devices_ready(struct ctlr_info *h)
{
	unsigned long flags;
	struct offline_device_entry *d;
	struct list_head *this, *tmp;

	spin_lock_irqsave(&h->offline_device_lock, flags);
	list_for_each_safe(this, tmp, &h->offline_device_list) {
		d = list_entry(this, struct offline_device_entry,
				offline_list);
		spin_unlock_irqrestore(&h->offline_device_lock, flags);
8349 8350 8351 8352
		if (!hpsa_volume_offline(h, d->scsi3addr)) {
			spin_lock_irqsave(&h->offline_device_lock, flags);
			list_del(&d->offline_list);
			spin_unlock_irqrestore(&h->offline_device_lock, flags);
8353
			return 1;
8354
		}
8355 8356 8357 8358
		spin_lock_irqsave(&h->offline_device_lock, flags);
	}
	spin_unlock_irqrestore(&h->offline_device_lock, flags);
	return 0;
8359 8360
}

8361 8362 8363 8364 8365 8366 8367 8368 8369 8370 8371 8372 8373 8374 8375 8376 8377 8378 8379 8380 8381 8382 8383 8384 8385 8386 8387 8388 8389 8390 8391 8392 8393 8394 8395
static int hpsa_luns_changed(struct ctlr_info *h)
{
	int rc = 1; /* assume there are changes */
	struct ReportLUNdata *logdev = NULL;

	/* if we can't find out if lun data has changed,
	 * assume that it has.
	 */

	if (!h->lastlogicals)
		goto out;

	logdev = kzalloc(sizeof(*logdev), GFP_KERNEL);
	if (!logdev) {
		dev_warn(&h->pdev->dev,
			"Out of memory, can't track lun changes.\n");
		goto out;
	}
	if (hpsa_scsi_do_report_luns(h, 1, logdev, sizeof(*logdev), 0)) {
		dev_warn(&h->pdev->dev,
			"report luns failed, can't track lun changes.\n");
		goto out;
	}
	if (memcmp(logdev, h->lastlogicals, sizeof(*logdev))) {
		dev_info(&h->pdev->dev,
			"Lun changes detected.\n");
		memcpy(h->lastlogicals, logdev, sizeof(*logdev));
		goto out;
	} else
		rc = 0; /* no changes detected. */
out:
	kfree(logdev);
	return rc;
}

8396
static void hpsa_rescan_ctlr_worker(struct work_struct *work)
8397 8398
{
	unsigned long flags;
8399
	struct ctlr_info *h = container_of(to_delayed_work(work),
8400 8401 8402 8403
					struct ctlr_info, rescan_ctlr_work);


	if (h->remove_in_progress)
8404
		return;
8405 8406 8407 8408 8409 8410

	if (hpsa_ctlr_needs_rescan(h) || hpsa_offline_devices_ready(h)) {
		scsi_host_get(h->scsi_host);
		hpsa_ack_ctlr_events(h);
		hpsa_scan_start(h->scsi_host);
		scsi_host_put(h->scsi_host);
8411
	} else if (h->discovery_polling) {
S
Scott Teel 已提交
8412
		hpsa_disable_rld_caching(h);
8413 8414 8415 8416 8417 8418 8419 8420 8421 8422 8423
		if (hpsa_luns_changed(h)) {
			struct Scsi_Host *sh = NULL;

			dev_info(&h->pdev->dev,
				"driver discovery polling rescan.\n");
			sh = scsi_host_get(h->scsi_host);
			if (sh != NULL) {
				hpsa_scan_start(sh);
				scsi_host_put(sh);
			}
		}
8424
	}
8425
	spin_lock_irqsave(&h->lock, flags);
8426 8427 8428 8429 8430 8431 8432 8433 8434 8435 8436 8437 8438 8439
	if (!h->remove_in_progress)
		queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
				h->heartbeat_sample_interval);
	spin_unlock_irqrestore(&h->lock, flags);
}

static void hpsa_monitor_ctlr_worker(struct work_struct *work)
{
	unsigned long flags;
	struct ctlr_info *h = container_of(to_delayed_work(work),
					struct ctlr_info, monitor_ctlr_work);

	detect_controller_lockup(h);
	if (lockup_detected(h))
8440
		return;
8441 8442 8443 8444

	spin_lock_irqsave(&h->lock, flags);
	if (!h->remove_in_progress)
		schedule_delayed_work(&h->monitor_ctlr_work,
8445 8446
				h->heartbeat_sample_interval);
	spin_unlock_irqrestore(&h->lock, flags);
8447 8448
}

8449 8450 8451 8452 8453
static struct workqueue_struct *hpsa_create_controller_wq(struct ctlr_info *h,
						char *name)
{
	struct workqueue_struct *wq = NULL;

8454
	wq = alloc_ordered_workqueue("%s_%d_hpsa", 0, name, h->ctlr);
8455 8456 8457 8458 8459 8460
	if (!wq)
		dev_err(&h->pdev->dev, "failed to create %s workqueue\n", name);

	return wq;
}

8461
static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
8462
{
8463
	int dac, rc;
8464
	struct ctlr_info *h;
8465 8466
	int try_soft_reset = 0;
	unsigned long flags;
8467
	u32 board_id;
8468 8469 8470 8471

	if (number_of_controllers == 0)
		printk(KERN_INFO DRIVER_NAME "\n");

8472 8473 8474 8475 8476 8477 8478
	rc = hpsa_lookup_board_id(pdev, &board_id);
	if (rc < 0) {
		dev_warn(&pdev->dev, "Board ID not found\n");
		return rc;
	}

	rc = hpsa_init_reset_devices(pdev, board_id);
8479 8480 8481 8482 8483 8484 8485 8486 8487 8488 8489 8490 8491
	if (rc) {
		if (rc != -ENOTSUPP)
			return rc;
		/* If the reset fails in a particular way (it has no way to do
		 * a proper hard reset, so returns -ENOTSUPP) we can try to do
		 * a soft reset once we get the controller configured up to the
		 * point that it can accept a command.
		 */
		try_soft_reset = 1;
		rc = 0;
	}

reinit_after_soft_reset:
8492

8493 8494 8495 8496 8497
	/* Command structures must be aligned on a 32-byte boundary because
	 * the 5 lower bits of the address are used by the hardware. and by
	 * the driver.  See comments in hpsa.h for more info.
	 */
	BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT);
8498
	h = kzalloc(sizeof(*h), GFP_KERNEL);
R
Robert Elliott 已提交
8499 8500
	if (!h) {
		dev_err(&pdev->dev, "Failed to allocate controller head\n");
8501
		return -ENOMEM;
R
Robert Elliott 已提交
8502
	}
8503

8504
	h->pdev = pdev;
R
Robert Elliott 已提交
8505

8506
	h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT;
8507
	INIT_LIST_HEAD(&h->offline_device_list);
8508
	spin_lock_init(&h->lock);
8509
	spin_lock_init(&h->offline_device_lock);
8510
	spin_lock_init(&h->scan_lock);
8511
	atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS);
S
Stephen Cameron 已提交
8512
	atomic_set(&h->abort_cmds_available, HPSA_CMDS_RESERVED_FOR_ABORTS);
8513 8514 8515

	/* Allocate and clear per-cpu variable lockup_detected */
	h->lockup_detected = alloc_percpu(u32);
8516
	if (!h->lockup_detected) {
R
Robert Elliott 已提交
8517
		dev_err(&h->pdev->dev, "Failed to allocate lockup detector\n");
8518
		rc = -ENOMEM;
8519
		goto clean1;	/* aer/h */
8520
	}
8521 8522
	set_lockup_detected_for_all_cpus(h, 0);

8523
	rc = hpsa_pci_init(h);
R
Robert Elliott 已提交
8524
	if (rc)
8525 8526 8527 8528 8529 8530 8531
		goto clean2;	/* lu, aer/h */

	/* relies on h-> settings made by hpsa_pci_init, including
	 * interrupt_mode h->intr */
	rc = hpsa_scsi_host_alloc(h);
	if (rc)
		goto clean2_5;	/* pci, lu, aer/h */
8532

8533
	sprintf(h->devname, HPSA "%d", h->scsi_host->host_no);
8534 8535 8536 8537
	h->ctlr = number_of_controllers;
	number_of_controllers++;

	/* configure PCI DMA stuff */
8538 8539
	rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
	if (rc == 0) {
8540
		dac = 1;
8541 8542 8543 8544 8545 8546
	} else {
		rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
		if (rc == 0) {
			dac = 0;
		} else {
			dev_err(&pdev->dev, "no suitable DMA available\n");
8547
			goto clean3;	/* shost, pci, lu, aer/h */
8548
		}
8549 8550 8551 8552
	}

	/* make sure the board interrupts are off */
	h->access.set_intr_mask(h, HPSA_INTR_OFF);
8553

R
Robert Elliott 已提交
8554 8555
	rc = hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx);
	if (rc)
8556
		goto clean3;	/* shost, pci, lu, aer/h */
8557
	rc = hpsa_alloc_cmd_pool(h);
8558
	if (rc)
8559
		goto clean4;	/* irq, shost, pci, lu, aer/h */
R
Robert Elliott 已提交
8560 8561
	rc = hpsa_alloc_sg_chain_blocks(h);
	if (rc)
8562
		goto clean5;	/* cmd, irq, shost, pci, lu, aer/h */
8563
	init_waitqueue_head(&h->scan_wait_queue);
S
Stephen Cameron 已提交
8564
	init_waitqueue_head(&h->abort_cmd_wait_queue);
W
Webb Scales 已提交
8565 8566
	init_waitqueue_head(&h->event_sync_wait_queue);
	mutex_init(&h->reset_mutex);
8567
	h->scan_finished = 1; /* no scan currently in progress */
8568 8569

	pci_set_drvdata(pdev, h);
8570
	h->ndevices = 0;
8571

8572
	spin_lock_init(&h->devlock);
R
Robert Elliott 已提交
8573 8574
	rc = hpsa_put_ctlr_into_performant_mode(h);
	if (rc)
8575 8576
		goto clean6; /* sg, cmd, irq, shost, pci, lu, aer/h */

8577 8578 8579 8580 8581 8582 8583 8584 8585 8586 8587 8588
	/* create the resubmit workqueue */
	h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan");
	if (!h->rescan_ctlr_wq) {
		rc = -ENOMEM;
		goto clean7;
	}

	h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit");
	if (!h->resubmit_wq) {
		rc = -ENOMEM;
		goto clean7;	/* aer/h */
	}
8589

R
Robert Elliott 已提交
8590 8591
	/*
	 * At this point, the controller is ready to take commands.
8592 8593 8594 8595 8596 8597 8598 8599 8600 8601 8602 8603 8604 8605 8606
	 * Now, if reset_devices and the hard reset didn't work, try
	 * the soft reset and see if that works.
	 */
	if (try_soft_reset) {

		/* This is kind of gross.  We may or may not get a completion
		 * from the soft reset command, and if we do, then the value
		 * from the fifo may or may not be valid.  So, we wait 10 secs
		 * after the reset throwing away any completions we get during
		 * that time.  Unregister the interrupt handler and register
		 * fake ones to scoop up any residual completions.
		 */
		spin_lock_irqsave(&h->lock, flags);
		h->access.set_intr_mask(h, HPSA_INTR_OFF);
		spin_unlock_irqrestore(&h->lock, flags);
8607
		hpsa_free_irqs(h);
8608
		rc = hpsa_request_irqs(h, hpsa_msix_discard_completions,
8609 8610
					hpsa_intx_discard_completions);
		if (rc) {
8611 8612
			dev_warn(&h->pdev->dev,
				"Failed to request_irq after soft reset.\n");
8613
			/*
8614 8615 8616 8617 8618 8619 8620 8621 8622
			 * cannot goto clean7 or free_irqs will be called
			 * again. Instead, do its work
			 */
			hpsa_free_performant_mode(h);	/* clean7 */
			hpsa_free_sg_chain_blocks(h);	/* clean6 */
			hpsa_free_cmd_pool(h);		/* clean5 */
			/*
			 * skip hpsa_free_irqs(h) clean4 since that
			 * was just called before request_irqs failed
8623 8624
			 */
			goto clean3;
8625 8626 8627 8628 8629
		}

		rc = hpsa_kdump_soft_reset(h);
		if (rc)
			/* Neither hard nor soft reset worked, we're hosed. */
8630
			goto clean7;
8631 8632 8633 8634 8635 8636 8637 8638 8639 8640 8641 8642 8643 8644 8645 8646 8647 8648 8649 8650

		dev_info(&h->pdev->dev, "Board READY.\n");
		dev_info(&h->pdev->dev,
			"Waiting for stale completions to drain.\n");
		h->access.set_intr_mask(h, HPSA_INTR_ON);
		msleep(10000);
		h->access.set_intr_mask(h, HPSA_INTR_OFF);

		rc = controller_reset_failed(h->cfgtable);
		if (rc)
			dev_info(&h->pdev->dev,
				"Soft reset appears to have failed.\n");

		/* since the controller's reset, we have to go back and re-init
		 * everything.  Easiest to just forget what we've done and do it
		 * all over again.
		 */
		hpsa_undo_allocations_after_kdump_soft_reset(h);
		try_soft_reset = 0;
		if (rc)
8651
			/* don't goto clean, we already unallocated */
8652 8653 8654 8655
			return -ENODEV;

		goto reinit_after_soft_reset;
	}
8656

R
Robert Elliott 已提交
8657 8658
	/* Enable Accelerated IO path at driver layer */
	h->acciopath_status = 1;
8659 8660
	/* Disable discovery polling.*/
	h->discovery_polling = 0;
8661

8662

8663 8664 8665
	/* Turn the interrupts on so we can service requests */
	h->access.set_intr_mask(h, HPSA_INTR_ON);

8666
	hpsa_hba_inquiry(h);
8667

8668 8669 8670 8671 8672
	h->lastlogicals = kzalloc(sizeof(*(h->lastlogicals)), GFP_KERNEL);
	if (!h->lastlogicals)
		dev_info(&h->pdev->dev,
			"Can't track change to report lun data\n");

8673 8674 8675 8676 8677
	/* hook into SCSI subsystem */
	rc = hpsa_scsi_add_host(h);
	if (rc)
		goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */

8678 8679 8680 8681 8682
	/* Monitor the controller for firmware lockups */
	h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
	INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker);
	schedule_delayed_work(&h->monitor_ctlr_work,
				h->heartbeat_sample_interval);
8683 8684 8685
	INIT_DELAYED_WORK(&h->rescan_ctlr_work, hpsa_rescan_ctlr_worker);
	queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
				h->heartbeat_sample_interval);
8686
	return 0;
8687

8688
clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
R
Robert Elliott 已提交
8689 8690 8691
	hpsa_free_performant_mode(h);
	h->access.set_intr_mask(h, HPSA_INTR_OFF);
clean6: /* sg, cmd, irq, pci, lockup, wq/aer/h */
8692
	hpsa_free_sg_chain_blocks(h);
8693
clean5: /* cmd, irq, shost, pci, lu, aer/h */
8694
	hpsa_free_cmd_pool(h);
8695
clean4: /* irq, shost, pci, lu, aer/h */
8696
	hpsa_free_irqs(h);
8697 8698 8699 8700
clean3: /* shost, pci, lu, aer/h */
	scsi_host_put(h->scsi_host);
	h->scsi_host = NULL;
clean2_5: /* pci, lu, aer/h */
R
Robert Elliott 已提交
8701
	hpsa_free_pci_init(h);
8702
clean2: /* lu, aer/h */
R
Robert Elliott 已提交
8703 8704 8705 8706 8707 8708
	if (h->lockup_detected) {
		free_percpu(h->lockup_detected);
		h->lockup_detected = NULL;
	}
clean1:	/* wq/aer/h */
	if (h->resubmit_wq) {
8709
		destroy_workqueue(h->resubmit_wq);
R
Robert Elliott 已提交
8710 8711 8712
		h->resubmit_wq = NULL;
	}
	if (h->rescan_ctlr_wq) {
8713
		destroy_workqueue(h->rescan_ctlr_wq);
R
Robert Elliott 已提交
8714 8715
		h->rescan_ctlr_wq = NULL;
	}
8716
	kfree(h);
8717
	return rc;
8718 8719 8720 8721 8722 8723
}

static void hpsa_flush_cache(struct ctlr_info *h)
{
	char *flush_buf;
	struct CommandList *c;
8724
	int rc;
8725

8726
	if (unlikely(lockup_detected(h)))
8727
		return;
8728 8729 8730 8731
	flush_buf = kzalloc(4, GFP_KERNEL);
	if (!flush_buf)
		return;

8732
	c = cmd_alloc(h);
8733

8734 8735 8736 8737
	if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0,
		RAID_CTLR_LUNID, TYPE_CMD)) {
		goto out;
	}
8738
	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
8739
					PCI_DMA_TODEVICE, DEFAULT_TIMEOUT);
8740 8741
	if (rc)
		goto out;
8742
	if (c->err_info->CommandStatus != 0)
8743
out:
8744 8745
		dev_warn(&h->pdev->dev,
			"error flushing cache on controller\n");
8746
	cmd_free(h, c);
8747 8748 8749
	kfree(flush_buf);
}

S
Scott Teel 已提交
8750 8751 8752 8753 8754 8755 8756 8757 8758 8759 8760 8761 8762 8763 8764 8765 8766 8767 8768 8769 8770 8771 8772 8773 8774 8775 8776 8777
/* Make controller gather fresh report lun data each time we
 * send down a report luns request
 */
static void hpsa_disable_rld_caching(struct ctlr_info *h)
{
	u32 *options;
	struct CommandList *c;
	int rc;

	/* Don't bother trying to set diag options if locked up */
	if (unlikely(h->lockup_detected))
		return;

	options = kzalloc(sizeof(*options), GFP_KERNEL);
	if (!options) {
		dev_err(&h->pdev->dev,
			"Error: failed to disable rld caching, during alloc.\n");
		return;
	}

	c = cmd_alloc(h);

	/* first, get the current diag options settings */
	if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0,
		RAID_CTLR_LUNID, TYPE_CMD))
		goto errout;

	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
8778
		PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
S
Scott Teel 已提交
8779 8780 8781 8782 8783 8784 8785 8786 8787 8788 8789
	if ((rc != 0) || (c->err_info->CommandStatus != 0))
		goto errout;

	/* Now, set the bit for disabling the RLD caching */
	*options |= HPSA_DIAG_OPTS_DISABLE_RLD_CACHING;

	if (fill_cmd(c, BMIC_SET_DIAG_OPTIONS, h, options, 4, 0,
		RAID_CTLR_LUNID, TYPE_CMD))
		goto errout;

	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
8790
		PCI_DMA_TODEVICE, DEFAULT_TIMEOUT);
S
Scott Teel 已提交
8791 8792 8793 8794 8795 8796 8797 8798 8799
	if ((rc != 0)  || (c->err_info->CommandStatus != 0))
		goto errout;

	/* Now verify that it got set: */
	if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0,
		RAID_CTLR_LUNID, TYPE_CMD))
		goto errout;

	rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
8800
		PCI_DMA_FROMDEVICE, DEFAULT_TIMEOUT);
S
Scott Teel 已提交
8801 8802 8803
	if ((rc != 0)  || (c->err_info->CommandStatus != 0))
		goto errout;

D
Dan Carpenter 已提交
8804
	if (*options & HPSA_DIAG_OPTS_DISABLE_RLD_CACHING)
S
Scott Teel 已提交
8805 8806 8807 8808 8809 8810 8811 8812 8813 8814
		goto out;

errout:
	dev_err(&h->pdev->dev,
			"Error: failed to disable report lun data caching.\n");
out:
	cmd_free(h, c);
	kfree(options);
}

8815 8816 8817 8818 8819 8820 8821 8822 8823 8824 8825
static void hpsa_shutdown(struct pci_dev *pdev)
{
	struct ctlr_info *h;

	h = pci_get_drvdata(pdev);
	/* Turn board interrupts off  and send the flush cache command
	 * sendcmd will turn off interrupt, and send the flush...
	 * To write all data in the battery backed cache to disks
	 */
	hpsa_flush_cache(h);
	h->access.set_intr_mask(h, HPSA_INTR_OFF);
R
Robert Elliott 已提交
8826
	hpsa_free_irqs(h);			/* init_one 4 */
8827
	hpsa_disable_interrupt_mode(h);		/* pci_init 2 */
8828 8829
}

8830
static void hpsa_free_device_info(struct ctlr_info *h)
8831 8832 8833
{
	int i;

R
Robert Elliott 已提交
8834
	for (i = 0; i < h->ndevices; i++) {
8835
		kfree(h->dev[i]);
R
Robert Elliott 已提交
8836 8837
		h->dev[i] = NULL;
	}
8838 8839
}

8840
static void hpsa_remove_one(struct pci_dev *pdev)
8841 8842
{
	struct ctlr_info *h;
8843
	unsigned long flags;
8844 8845

	if (pci_get_drvdata(pdev) == NULL) {
8846
		dev_err(&pdev->dev, "unable to remove device\n");
8847 8848 8849
		return;
	}
	h = pci_get_drvdata(pdev);
8850 8851 8852 8853 8854

	/* Get rid of any controller monitoring work items */
	spin_lock_irqsave(&h->lock, flags);
	h->remove_in_progress = 1;
	spin_unlock_irqrestore(&h->lock, flags);
8855 8856 8857 8858
	cancel_delayed_work_sync(&h->monitor_ctlr_work);
	cancel_delayed_work_sync(&h->rescan_ctlr_work);
	destroy_workqueue(h->rescan_ctlr_wq);
	destroy_workqueue(h->resubmit_wq);
8859

D
Don Brace 已提交
8860 8861 8862 8863 8864 8865 8866 8867
	/*
	 * Call before disabling interrupts.
	 * scsi_remove_host can trigger I/O operations especially
	 * when multipath is enabled. There can be SYNCHRONIZE CACHE
	 * operations which cannot complete and will hang the system.
	 */
	if (h->scsi_host)
		scsi_remove_host(h->scsi_host);		/* init_one 8 */
R
Robert Elliott 已提交
8868
	/* includes hpsa_free_irqs - init_one 4 */
R
Robert Elliott 已提交
8869
	/* includes hpsa_disable_interrupt_mode - pci_init 2 */
8870
	hpsa_shutdown(pdev);
8871

R
Robert Elliott 已提交
8872 8873
	hpsa_free_device_info(h);		/* scan */

8874 8875 8876
	kfree(h->hba_inquiry_data);			/* init_one 10 */
	h->hba_inquiry_data = NULL;			/* init_one 10 */
	hpsa_free_ioaccel2_sg_chain_blocks(h);
R
Robert Elliott 已提交
8877 8878 8879
	hpsa_free_performant_mode(h);			/* init_one 7 */
	hpsa_free_sg_chain_blocks(h);			/* init_one 6 */
	hpsa_free_cmd_pool(h);				/* init_one 5 */
8880
	kfree(h->lastlogicals);
R
Robert Elliott 已提交
8881 8882

	/* hpsa_free_irqs already called via hpsa_shutdown init_one 4 */
R
Robert Elliott 已提交
8883

8884 8885 8886
	scsi_host_put(h->scsi_host);			/* init_one 3 */
	h->scsi_host = NULL;				/* init_one 3 */

R
Robert Elliott 已提交
8887
	/* includes hpsa_disable_interrupt_mode - pci_init 2 */
8888
	hpsa_free_pci_init(h);				/* init_one 2.5 */
R
Robert Elliott 已提交
8889

R
Robert Elliott 已提交
8890 8891 8892
	free_percpu(h->lockup_detected);		/* init_one 2 */
	h->lockup_detected = NULL;			/* init_one 2 */
	/* (void) pci_disable_pcie_error_reporting(pdev); */	/* init_one 1 */
K
Kevin Barnett 已提交
8893 8894 8895

	hpsa_delete_sas_host(h);

R
Robert Elliott 已提交
8896
	kfree(h);					/* init_one 1 */
8897 8898 8899 8900 8901 8902 8903 8904 8905 8906 8907 8908 8909 8910
}

static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
	__attribute__((unused)) pm_message_t state)
{
	return -ENOSYS;
}

static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
{
	return -ENOSYS;
}

static struct pci_driver hpsa_pci_driver = {
8911
	.name = HPSA,
8912
	.probe = hpsa_init_one,
8913
	.remove = hpsa_remove_one,
8914 8915 8916 8917 8918 8919
	.id_table = hpsa_pci_device_id,	/* id_table */
	.shutdown = hpsa_shutdown,
	.suspend = hpsa_suspend,
	.resume = hpsa_resume,
};

8920 8921 8922 8923 8924 8925 8926 8927 8928 8929 8930 8931 8932
/* Fill in bucket_map[], given nsgs (the max number of
 * scatter gather elements supported) and bucket[],
 * which is an array of 8 integers.  The bucket[] array
 * contains 8 different DMA transfer sizes (in 16
 * byte increments) which the controller uses to fetch
 * commands.  This function fills in bucket_map[], which
 * maps a given number of scatter gather elements to one of
 * the 8 DMA transfer sizes.  The point of it is to allow the
 * controller to only do as much DMA as needed to fetch the
 * command, with the DMA transfer size encoded in the lower
 * bits of the command address.
 */
static void  calc_bucket_map(int bucket[], int num_buckets,
D
Don Brace 已提交
8933
	int nsgs, int min_blocks, u32 *bucket_map)
8934 8935 8936 8937 8938 8939
{
	int i, j, b, size;

	/* Note, bucket_map must have nsgs+1 entries. */
	for (i = 0; i <= nsgs; i++) {
		/* Compute size of a command with i SG entries */
8940
		size = i + min_blocks;
8941 8942
		b = num_buckets; /* Assume the biggest bucket */
		/* Find the bucket that is just big enough */
8943
		for (j = 0; j < num_buckets; j++) {
8944 8945 8946 8947 8948 8949 8950 8951 8952 8953
			if (bucket[j] >= size) {
				b = j;
				break;
			}
		}
		/* for a command with i SG entries, use bucket b. */
		bucket_map[i] = b;
	}
}

R
Robert Elliott 已提交
8954 8955 8956 8957
/*
 * return -ENODEV on err, 0 on success (or no action)
 * allocates numerous items that must be freed later
 */
8958
static int hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support)
8959
{
8960 8961
	int i;
	unsigned long register_value;
8962 8963
	unsigned long transMethod = CFGTBL_Trans_Performant |
			(trans_support & CFGTBL_Trans_use_short_tags) |
8964 8965 8966
				CFGTBL_Trans_enable_directed_msix |
			(trans_support & (CFGTBL_Trans_io_accel1 |
				CFGTBL_Trans_io_accel2));
8967
	struct access_method access = SA5_performant_access;
8968 8969 8970 8971 8972 8973 8974 8975 8976 8977 8978

	/* This is a bit complicated.  There are 8 registers on
	 * the controller which we write to to tell it 8 different
	 * sizes of commands which there may be.  It's a way of
	 * reducing the DMA done to fetch each command.  Encoded into
	 * each command's tag are 3 bits which communicate to the controller
	 * which of the eight sizes that command fits within.  The size of
	 * each command depends on how many scatter gather entries there are.
	 * Each SG entry requires 16 bytes.  The eight registers are programmed
	 * with the number of 16-byte blocks a command of that size requires.
	 * The smallest command possible requires 5 such 16 byte blocks.
8979
	 * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte
8980 8981 8982 8983 8984 8985
	 * blocks.  Note, this only extends to the SG entries contained
	 * within the command block, and does not extend to chained blocks
	 * of SG elements.   bft[] contains the eight values we write to
	 * the registers.  They are not evenly distributed, but have more
	 * sizes for small commands, and fewer sizes for larger commands.
	 */
8986
	int bft[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD + 4};
8987 8988 8989 8990 8991 8992 8993 8994 8995 8996
#define MIN_IOACCEL2_BFT_ENTRY 5
#define HPSA_IOACCEL2_HEADER_SZ 4
	int bft2[16] = {MIN_IOACCEL2_BFT_ENTRY, 6, 7, 8, 9, 10, 11, 12,
			13, 14, 15, 16, 17, 18, 19,
			HPSA_IOACCEL2_HEADER_SZ + IOACCEL2_MAXSGENTRIES};
	BUILD_BUG_ON(ARRAY_SIZE(bft2) != 16);
	BUILD_BUG_ON(ARRAY_SIZE(bft) != 8);
	BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) >
				 16 * MIN_IOACCEL2_BFT_ENTRY);
	BUILD_BUG_ON(sizeof(struct ioaccel2_sg_element) != 16);
8997
	BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD + 4);
8998 8999 9000 9001 9002 9003
	/*  5 = 1 s/g entry or 4k
	 *  6 = 2 s/g entry or 8k
	 *  8 = 4 s/g entry or 16k
	 * 10 = 6 s/g entry or 24k
	 */

9004 9005 9006 9007 9008 9009 9010
	/* If the controller supports either ioaccel method then
	 * we can also use the RAID stack submit path that does not
	 * perform the superfluous readl() after each command submission.
	 */
	if (trans_support & (CFGTBL_Trans_io_accel1 | CFGTBL_Trans_io_accel2))
		access = SA5_performant_access_no_read;

9011
	/* Controller spec: zero out this buffer. */
9012 9013
	for (i = 0; i < h->nreply_queues; i++)
		memset(h->reply_queue[i].head, 0, h->reply_queue_size);
9014

9015 9016
	bft[7] = SG_ENTRIES_IN_CMD + 4;
	calc_bucket_map(bft, ARRAY_SIZE(bft),
9017
				SG_ENTRIES_IN_CMD, 4, h->blockFetchTable);
9018 9019 9020 9021 9022
	for (i = 0; i < 8; i++)
		writel(bft[i], &h->transtable->BlockFetch[i]);

	/* size of controller ring buffer */
	writel(h->max_commands, &h->transtable->RepQSize);
9023
	writel(h->nreply_queues, &h->transtable->RepQCount);
9024 9025
	writel(0, &h->transtable->RepQCtrAddrLow32);
	writel(0, &h->transtable->RepQCtrAddrHigh32);
9026 9027 9028

	for (i = 0; i < h->nreply_queues; i++) {
		writel(0, &h->transtable->RepQAddr[i].upper);
9029
		writel(h->reply_queue[i].busaddr,
9030 9031 9032
			&h->transtable->RepQAddr[i].lower);
	}

9033
	writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
9034 9035 9036 9037 9038 9039 9040 9041
	writel(transMethod, &(h->cfgtable->HostWrite.TransportRequest));
	/*
	 * enable outbound interrupt coalescing in accelerator mode;
	 */
	if (trans_support & CFGTBL_Trans_io_accel1) {
		access = SA5_ioaccel_mode1_access;
		writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
		writel(4, &h->cfgtable->HostWrite.CoalIntCount);
9042 9043 9044 9045 9046 9047
	} else {
		if (trans_support & CFGTBL_Trans_io_accel2) {
			access = SA5_ioaccel_mode2_access;
			writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
			writel(4, &h->cfgtable->HostWrite.CoalIntCount);
		}
9048
	}
9049
	writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
9050 9051 9052 9053 9054
	if (hpsa_wait_for_mode_change_ack(h)) {
		dev_err(&h->pdev->dev,
			"performant mode problem - doorbell timeout\n");
		return -ENODEV;
	}
9055 9056
	register_value = readl(&(h->cfgtable->TransportActive));
	if (!(register_value & CFGTBL_Trans_Performant)) {
9057 9058
		dev_err(&h->pdev->dev,
			"performant mode problem - transport not active\n");
9059
		return -ENODEV;
9060
	}
9061
	/* Change the access methods to the performant access methods */
9062 9063 9064
	h->access = access;
	h->transMethod = transMethod;

9065 9066
	if (!((trans_support & CFGTBL_Trans_io_accel1) ||
		(trans_support & CFGTBL_Trans_io_accel2)))
9067
		return 0;
9068

9069 9070 9071 9072 9073 9074 9075 9076 9077 9078
	if (trans_support & CFGTBL_Trans_io_accel1) {
		/* Set up I/O accelerator mode */
		for (i = 0; i < h->nreply_queues; i++) {
			writel(i, h->vaddr + IOACCEL_MODE1_REPLY_QUEUE_INDEX);
			h->reply_queue[i].current_entry =
				readl(h->vaddr + IOACCEL_MODE1_PRODUCER_INDEX);
		}
		bft[7] = h->ioaccel_maxsg + 8;
		calc_bucket_map(bft, ARRAY_SIZE(bft), h->ioaccel_maxsg, 8,
				h->ioaccel1_blockFetchTable);
9079

9080
		/* initialize all reply queue entries to unused */
9081 9082 9083 9084
		for (i = 0; i < h->nreply_queues; i++)
			memset(h->reply_queue[i].head,
				(u8) IOACCEL_MODE1_REPLY_UNUSED,
				h->reply_queue_size);
9085

9086 9087 9088 9089 9090 9091 9092 9093 9094 9095 9096
		/* set all the constant fields in the accelerator command
		 * frames once at init time to save CPU cycles later.
		 */
		for (i = 0; i < h->nr_cmds; i++) {
			struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[i];

			cp->function = IOACCEL1_FUNCTION_SCSIIO;
			cp->err_info = (u32) (h->errinfo_pool_dhandle +
					(i * sizeof(struct ErrorInfo)));
			cp->err_info_len = sizeof(struct ErrorInfo);
			cp->sgl_offset = IOACCEL1_SGLOFFSET;
D
Don Brace 已提交
9097 9098
			cp->host_context_flags =
				cpu_to_le16(IOACCEL1_HCFLAGS_CISS_FORMAT);
9099 9100
			cp->timeout_sec = 0;
			cp->ReplyQueue = 0;
9101
			cp->tag =
9102
				cpu_to_le64((i << DIRECT_LOOKUP_SHIFT));
9103 9104
			cp->host_addr =
				cpu_to_le64(h->ioaccel_cmd_pool_dhandle +
9105 9106 9107 9108 9109 9110 9111 9112 9113 9114 9115 9116 9117 9118 9119 9120 9121 9122 9123 9124 9125 9126 9127 9128
					(i * sizeof(struct io_accel1_cmd)));
		}
	} else if (trans_support & CFGTBL_Trans_io_accel2) {
		u64 cfg_offset, cfg_base_addr_index;
		u32 bft2_offset, cfg_base_addr;
		int rc;

		rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
			&cfg_base_addr_index, &cfg_offset);
		BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) != 64);
		bft2[15] = h->ioaccel_maxsg + HPSA_IOACCEL2_HEADER_SZ;
		calc_bucket_map(bft2, ARRAY_SIZE(bft2), h->ioaccel_maxsg,
				4, h->ioaccel2_blockFetchTable);
		bft2_offset = readl(&h->cfgtable->io_accel_request_size_offset);
		BUILD_BUG_ON(offsetof(struct CfgTable,
				io_accel_request_size_offset) != 0xb8);
		h->ioaccel2_bft2_regs =
			remap_pci_mem(pci_resource_start(h->pdev,
					cfg_base_addr_index) +
					cfg_offset + bft2_offset,
					ARRAY_SIZE(bft2) *
					sizeof(*h->ioaccel2_bft2_regs));
		for (i = 0; i < ARRAY_SIZE(bft2); i++)
			writel(bft2[i], &h->ioaccel2_bft2_regs[i]);
9129
	}
9130
	writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
9131 9132 9133 9134 9135 9136
	if (hpsa_wait_for_mode_change_ack(h)) {
		dev_err(&h->pdev->dev,
			"performant mode problem - enabling ioaccel mode\n");
		return -ENODEV;
	}
	return 0;
9137 9138
}

9139 9140 9141
/* Free ioaccel1 mode command blocks and block fetch table */
static void hpsa_free_ioaccel1_cmd_and_bft(struct ctlr_info *h)
{
R
Robert Elliott 已提交
9142
	if (h->ioaccel_cmd_pool) {
9143 9144 9145 9146
		pci_free_consistent(h->pdev,
			h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
			h->ioaccel_cmd_pool,
			h->ioaccel_cmd_pool_dhandle);
R
Robert Elliott 已提交
9147 9148 9149
		h->ioaccel_cmd_pool = NULL;
		h->ioaccel_cmd_pool_dhandle = 0;
	}
9150
	kfree(h->ioaccel1_blockFetchTable);
R
Robert Elliott 已提交
9151
	h->ioaccel1_blockFetchTable = NULL;
9152 9153
}

9154 9155
/* Allocate ioaccel1 mode command blocks and block fetch table */
static int hpsa_alloc_ioaccel1_cmd_and_bft(struct ctlr_info *h)
9156
{
9157 9158 9159 9160 9161
	h->ioaccel_maxsg =
		readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
	if (h->ioaccel_maxsg > IOACCEL1_MAXSGENTRIES)
		h->ioaccel_maxsg = IOACCEL1_MAXSGENTRIES;

9162 9163 9164 9165 9166 9167 9168 9169 9170 9171 9172 9173
	/* Command structures must be aligned on a 128-byte boundary
	 * because the 7 lower bits of the address are used by the
	 * hardware.
	 */
	BUILD_BUG_ON(sizeof(struct io_accel1_cmd) %
			IOACCEL1_COMMANDLIST_ALIGNMENT);
	h->ioaccel_cmd_pool =
		pci_alloc_consistent(h->pdev,
			h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
			&(h->ioaccel_cmd_pool_dhandle));

	h->ioaccel1_blockFetchTable =
9174
		kmalloc(((h->ioaccel_maxsg + 1) *
9175 9176 9177 9178 9179 9180 9181 9182 9183 9184 9185
				sizeof(u32)), GFP_KERNEL);

	if ((h->ioaccel_cmd_pool == NULL) ||
		(h->ioaccel1_blockFetchTable == NULL))
		goto clean_up;

	memset(h->ioaccel_cmd_pool, 0,
		h->nr_cmds * sizeof(*h->ioaccel_cmd_pool));
	return 0;

clean_up:
9186
	hpsa_free_ioaccel1_cmd_and_bft(h);
9187
	return -ENOMEM;
9188 9189
}

9190 9191 9192
/* Free ioaccel2 mode command blocks and block fetch table */
static void hpsa_free_ioaccel2_cmd_and_bft(struct ctlr_info *h)
{
9193 9194
	hpsa_free_ioaccel2_sg_chain_blocks(h);

R
Robert Elliott 已提交
9195
	if (h->ioaccel2_cmd_pool) {
9196 9197 9198 9199
		pci_free_consistent(h->pdev,
			h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
			h->ioaccel2_cmd_pool,
			h->ioaccel2_cmd_pool_dhandle);
R
Robert Elliott 已提交
9200 9201 9202
		h->ioaccel2_cmd_pool = NULL;
		h->ioaccel2_cmd_pool_dhandle = 0;
	}
9203
	kfree(h->ioaccel2_blockFetchTable);
R
Robert Elliott 已提交
9204
	h->ioaccel2_blockFetchTable = NULL;
9205 9206
}

9207 9208
/* Allocate ioaccel2 mode command blocks and block fetch table */
static int hpsa_alloc_ioaccel2_cmd_and_bft(struct ctlr_info *h)
9209
{
9210 9211
	int rc;

9212 9213 9214 9215 9216 9217 9218 9219 9220 9221 9222 9223 9224 9225 9226 9227 9228 9229 9230
	/* Allocate ioaccel2 mode command blocks and block fetch table */

	h->ioaccel_maxsg =
		readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
	if (h->ioaccel_maxsg > IOACCEL2_MAXSGENTRIES)
		h->ioaccel_maxsg = IOACCEL2_MAXSGENTRIES;

	BUILD_BUG_ON(sizeof(struct io_accel2_cmd) %
			IOACCEL2_COMMANDLIST_ALIGNMENT);
	h->ioaccel2_cmd_pool =
		pci_alloc_consistent(h->pdev,
			h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
			&(h->ioaccel2_cmd_pool_dhandle));

	h->ioaccel2_blockFetchTable =
		kmalloc(((h->ioaccel_maxsg + 1) *
				sizeof(u32)), GFP_KERNEL);

	if ((h->ioaccel2_cmd_pool == NULL) ||
9231 9232 9233 9234 9235 9236 9237
		(h->ioaccel2_blockFetchTable == NULL)) {
		rc = -ENOMEM;
		goto clean_up;
	}

	rc = hpsa_allocate_ioaccel2_sg_chain_blocks(h);
	if (rc)
9238 9239 9240 9241 9242 9243 9244
		goto clean_up;

	memset(h->ioaccel2_cmd_pool, 0,
		h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool));
	return 0;

clean_up:
9245
	hpsa_free_ioaccel2_cmd_and_bft(h);
9246
	return rc;
9247 9248
}

R
Robert Elliott 已提交
9249 9250 9251 9252 9253 9254 9255 9256 9257 9258 9259 9260 9261 9262
/* Free items allocated by hpsa_put_ctlr_into_performant_mode */
static void hpsa_free_performant_mode(struct ctlr_info *h)
{
	kfree(h->blockFetchTable);
	h->blockFetchTable = NULL;
	hpsa_free_reply_queues(h);
	hpsa_free_ioaccel1_cmd_and_bft(h);
	hpsa_free_ioaccel2_cmd_and_bft(h);
}

/* return -ENODEV on error, 0 on success (or no action)
 * allocates numerous items that must be freed later
 */
static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
9263 9264
{
	u32 trans_support;
9265 9266
	unsigned long transMethod = CFGTBL_Trans_Performant |
					CFGTBL_Trans_use_short_tags;
R
Robert Elliott 已提交
9267
	int i, rc;
9268

9269
	if (hpsa_simple_mode)
R
Robert Elliott 已提交
9270
		return 0;
9271

9272 9273
	trans_support = readl(&(h->cfgtable->TransportSupport));
	if (!(trans_support & PERFORMANT_MODE))
R
Robert Elliott 已提交
9274
		return 0;
9275

9276 9277 9278 9279
	/* Check for I/O accelerator mode support */
	if (trans_support & CFGTBL_Trans_io_accel1) {
		transMethod |= CFGTBL_Trans_io_accel1 |
				CFGTBL_Trans_enable_directed_msix;
R
Robert Elliott 已提交
9280 9281 9282 9283 9284
		rc = hpsa_alloc_ioaccel1_cmd_and_bft(h);
		if (rc)
			return rc;
	} else if (trans_support & CFGTBL_Trans_io_accel2) {
		transMethod |= CFGTBL_Trans_io_accel2 |
9285
				CFGTBL_Trans_enable_directed_msix;
R
Robert Elliott 已提交
9286 9287 9288
		rc = hpsa_alloc_ioaccel2_cmd_and_bft(h);
		if (rc)
			return rc;
9289 9290
	}

9291
	h->nreply_queues = h->msix_vector > 0 ? h->msix_vector : 1;
9292
	hpsa_get_max_perf_mode_cmds(h);
9293
	/* Performant mode ring buffer and supporting data structures */
9294
	h->reply_queue_size = h->max_commands * sizeof(u64);
9295

9296
	for (i = 0; i < h->nreply_queues; i++) {
9297 9298 9299
		h->reply_queue[i].head = pci_alloc_consistent(h->pdev,
						h->reply_queue_size,
						&(h->reply_queue[i].busaddr));
R
Robert Elliott 已提交
9300 9301 9302 9303
		if (!h->reply_queue[i].head) {
			rc = -ENOMEM;
			goto clean1;	/* rq, ioaccel */
		}
9304 9305 9306 9307 9308
		h->reply_queue[i].size = h->max_commands;
		h->reply_queue[i].wraparound = 1;  /* spec: init to 1 */
		h->reply_queue[i].current_entry = 0;
	}

9309
	/* Need a block fetch table for performant mode */
9310
	h->blockFetchTable = kmalloc(((SG_ENTRIES_IN_CMD + 1) *
9311
				sizeof(u32)), GFP_KERNEL);
R
Robert Elliott 已提交
9312 9313 9314 9315
	if (!h->blockFetchTable) {
		rc = -ENOMEM;
		goto clean1;	/* rq, ioaccel */
	}
9316

R
Robert Elliott 已提交
9317 9318 9319 9320
	rc = hpsa_enter_performant_mode(h, trans_support);
	if (rc)
		goto clean2;	/* bft, rq, ioaccel */
	return 0;
9321

R
Robert Elliott 已提交
9322
clean2:	/* bft, rq, ioaccel */
9323
	kfree(h->blockFetchTable);
R
Robert Elliott 已提交
9324 9325 9326 9327 9328 9329
	h->blockFetchTable = NULL;
clean1:	/* rq, ioaccel */
	hpsa_free_reply_queues(h);
	hpsa_free_ioaccel1_cmd_and_bft(h);
	hpsa_free_ioaccel2_cmd_and_bft(h);
	return rc;
9330 9331
}

9332
static int is_accelerated_cmd(struct CommandList *c)
9333
{
9334 9335 9336 9337 9338 9339
	return c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_IOACCEL2;
}

static void hpsa_drain_accel_commands(struct ctlr_info *h)
{
	struct CommandList *c = NULL;
9340
	int i, accel_cmds_out;
9341
	int refcount;
9342

9343
	do { /* wait for all outstanding ioaccel commands to drain out */
9344
		accel_cmds_out = 0;
9345 9346
		for (i = 0; i < h->nr_cmds; i++) {
			c = h->cmd_pool + i;
9347 9348 9349 9350
			refcount = atomic_inc_return(&c->refcount);
			if (refcount > 1) /* Command is allocated */
				accel_cmds_out += is_accelerated_cmd(c);
			cmd_free(h, c);
9351
		}
9352
		if (accel_cmds_out <= 0)
9353
			break;
9354 9355 9356 9357
		msleep(100);
	} while (1);
}

K
Kevin Barnett 已提交
9358 9359 9360 9361 9362 9363 9364 9365 9366 9367 9368 9369 9370 9371 9372 9373 9374 9375 9376 9377 9378 9379 9380 9381 9382 9383 9384 9385 9386 9387 9388 9389 9390 9391 9392 9393 9394 9395 9396 9397 9398 9399 9400 9401 9402 9403 9404 9405 9406 9407 9408 9409 9410 9411 9412 9413 9414 9415 9416 9417 9418 9419 9420 9421 9422 9423 9424 9425 9426 9427 9428 9429 9430 9431 9432 9433 9434 9435 9436 9437 9438 9439 9440 9441 9442 9443 9444 9445 9446 9447 9448 9449 9450 9451 9452 9453 9454 9455 9456 9457 9458 9459 9460 9461 9462 9463 9464 9465 9466 9467 9468 9469 9470 9471 9472 9473 9474 9475 9476 9477 9478 9479 9480 9481 9482 9483 9484 9485 9486 9487 9488 9489 9490 9491 9492 9493 9494 9495 9496 9497 9498 9499 9500 9501 9502 9503 9504 9505 9506 9507 9508 9509 9510 9511 9512 9513 9514 9515 9516 9517 9518 9519 9520 9521 9522 9523 9524 9525 9526 9527 9528 9529 9530 9531 9532 9533 9534 9535 9536 9537 9538 9539 9540 9541 9542 9543 9544 9545 9546 9547 9548 9549 9550 9551 9552 9553 9554 9555 9556 9557 9558 9559 9560 9561 9562 9563 9564 9565 9566 9567 9568 9569 9570 9571 9572 9573 9574 9575 9576 9577 9578 9579 9580 9581 9582 9583 9584 9585 9586 9587 9588 9589 9590 9591 9592 9593 9594 9595 9596 9597 9598 9599 9600 9601 9602 9603 9604 9605 9606 9607 9608 9609 9610 9611 9612 9613 9614 9615 9616 9617 9618 9619 9620 9621 9622 9623 9624 9625 9626 9627 9628 9629 9630 9631 9632 9633 9634 9635 9636 9637
static struct hpsa_sas_phy *hpsa_alloc_sas_phy(
				struct hpsa_sas_port *hpsa_sas_port)
{
	struct hpsa_sas_phy *hpsa_sas_phy;
	struct sas_phy *phy;

	hpsa_sas_phy = kzalloc(sizeof(*hpsa_sas_phy), GFP_KERNEL);
	if (!hpsa_sas_phy)
		return NULL;

	phy = sas_phy_alloc(hpsa_sas_port->parent_node->parent_dev,
		hpsa_sas_port->next_phy_index);
	if (!phy) {
		kfree(hpsa_sas_phy);
		return NULL;
	}

	hpsa_sas_port->next_phy_index++;
	hpsa_sas_phy->phy = phy;
	hpsa_sas_phy->parent_port = hpsa_sas_port;

	return hpsa_sas_phy;
}

static void hpsa_free_sas_phy(struct hpsa_sas_phy *hpsa_sas_phy)
{
	struct sas_phy *phy = hpsa_sas_phy->phy;

	sas_port_delete_phy(hpsa_sas_phy->parent_port->port, phy);
	sas_phy_free(phy);
	if (hpsa_sas_phy->added_to_port)
		list_del(&hpsa_sas_phy->phy_list_entry);
	kfree(hpsa_sas_phy);
}

static int hpsa_sas_port_add_phy(struct hpsa_sas_phy *hpsa_sas_phy)
{
	int rc;
	struct hpsa_sas_port *hpsa_sas_port;
	struct sas_phy *phy;
	struct sas_identify *identify;

	hpsa_sas_port = hpsa_sas_phy->parent_port;
	phy = hpsa_sas_phy->phy;

	identify = &phy->identify;
	memset(identify, 0, sizeof(*identify));
	identify->sas_address = hpsa_sas_port->sas_address;
	identify->device_type = SAS_END_DEVICE;
	identify->initiator_port_protocols = SAS_PROTOCOL_STP;
	identify->target_port_protocols = SAS_PROTOCOL_STP;
	phy->minimum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
	phy->maximum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
	phy->minimum_linkrate = SAS_LINK_RATE_UNKNOWN;
	phy->maximum_linkrate = SAS_LINK_RATE_UNKNOWN;
	phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;

	rc = sas_phy_add(hpsa_sas_phy->phy);
	if (rc)
		return rc;

	sas_port_add_phy(hpsa_sas_port->port, hpsa_sas_phy->phy);
	list_add_tail(&hpsa_sas_phy->phy_list_entry,
			&hpsa_sas_port->phy_list_head);
	hpsa_sas_phy->added_to_port = true;

	return 0;
}

static int
	hpsa_sas_port_add_rphy(struct hpsa_sas_port *hpsa_sas_port,
				struct sas_rphy *rphy)
{
	struct sas_identify *identify;

	identify = &rphy->identify;
	identify->sas_address = hpsa_sas_port->sas_address;
	identify->initiator_port_protocols = SAS_PROTOCOL_STP;
	identify->target_port_protocols = SAS_PROTOCOL_STP;

	return sas_rphy_add(rphy);
}

static struct hpsa_sas_port
	*hpsa_alloc_sas_port(struct hpsa_sas_node *hpsa_sas_node,
				u64 sas_address)
{
	int rc;
	struct hpsa_sas_port *hpsa_sas_port;
	struct sas_port *port;

	hpsa_sas_port = kzalloc(sizeof(*hpsa_sas_port), GFP_KERNEL);
	if (!hpsa_sas_port)
		return NULL;

	INIT_LIST_HEAD(&hpsa_sas_port->phy_list_head);
	hpsa_sas_port->parent_node = hpsa_sas_node;

	port = sas_port_alloc_num(hpsa_sas_node->parent_dev);
	if (!port)
		goto free_hpsa_port;

	rc = sas_port_add(port);
	if (rc)
		goto free_sas_port;

	hpsa_sas_port->port = port;
	hpsa_sas_port->sas_address = sas_address;
	list_add_tail(&hpsa_sas_port->port_list_entry,
			&hpsa_sas_node->port_list_head);

	return hpsa_sas_port;

free_sas_port:
	sas_port_free(port);
free_hpsa_port:
	kfree(hpsa_sas_port);

	return NULL;
}

static void hpsa_free_sas_port(struct hpsa_sas_port *hpsa_sas_port)
{
	struct hpsa_sas_phy *hpsa_sas_phy;
	struct hpsa_sas_phy *next;

	list_for_each_entry_safe(hpsa_sas_phy, next,
			&hpsa_sas_port->phy_list_head, phy_list_entry)
		hpsa_free_sas_phy(hpsa_sas_phy);

	sas_port_delete(hpsa_sas_port->port);
	list_del(&hpsa_sas_port->port_list_entry);
	kfree(hpsa_sas_port);
}

static struct hpsa_sas_node *hpsa_alloc_sas_node(struct device *parent_dev)
{
	struct hpsa_sas_node *hpsa_sas_node;

	hpsa_sas_node = kzalloc(sizeof(*hpsa_sas_node), GFP_KERNEL);
	if (hpsa_sas_node) {
		hpsa_sas_node->parent_dev = parent_dev;
		INIT_LIST_HEAD(&hpsa_sas_node->port_list_head);
	}

	return hpsa_sas_node;
}

static void hpsa_free_sas_node(struct hpsa_sas_node *hpsa_sas_node)
{
	struct hpsa_sas_port *hpsa_sas_port;
	struct hpsa_sas_port *next;

	if (!hpsa_sas_node)
		return;

	list_for_each_entry_safe(hpsa_sas_port, next,
			&hpsa_sas_node->port_list_head, port_list_entry)
		hpsa_free_sas_port(hpsa_sas_port);

	kfree(hpsa_sas_node);
}

static struct hpsa_scsi_dev_t
	*hpsa_find_device_by_sas_rphy(struct ctlr_info *h,
					struct sas_rphy *rphy)
{
	int i;
	struct hpsa_scsi_dev_t *device;

	for (i = 0; i < h->ndevices; i++) {
		device = h->dev[i];
		if (!device->sas_port)
			continue;
		if (device->sas_port->rphy == rphy)
			return device;
	}

	return NULL;
}

static int hpsa_add_sas_host(struct ctlr_info *h)
{
	int rc;
	struct device *parent_dev;
	struct hpsa_sas_node *hpsa_sas_node;
	struct hpsa_sas_port *hpsa_sas_port;
	struct hpsa_sas_phy *hpsa_sas_phy;

	parent_dev = &h->scsi_host->shost_gendev;

	hpsa_sas_node = hpsa_alloc_sas_node(parent_dev);
	if (!hpsa_sas_node)
		return -ENOMEM;

	hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, h->sas_address);
	if (!hpsa_sas_port) {
		rc = -ENODEV;
		goto free_sas_node;
	}

	hpsa_sas_phy = hpsa_alloc_sas_phy(hpsa_sas_port);
	if (!hpsa_sas_phy) {
		rc = -ENODEV;
		goto free_sas_port;
	}

	rc = hpsa_sas_port_add_phy(hpsa_sas_phy);
	if (rc)
		goto free_sas_phy;

	h->sas_host = hpsa_sas_node;

	return 0;

free_sas_phy:
	hpsa_free_sas_phy(hpsa_sas_phy);
free_sas_port:
	hpsa_free_sas_port(hpsa_sas_port);
free_sas_node:
	hpsa_free_sas_node(hpsa_sas_node);

	return rc;
}

static void hpsa_delete_sas_host(struct ctlr_info *h)
{
	hpsa_free_sas_node(h->sas_host);
}

static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node,
				struct hpsa_scsi_dev_t *device)
{
	int rc;
	struct hpsa_sas_port *hpsa_sas_port;
	struct sas_rphy *rphy;

	hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, device->sas_address);
	if (!hpsa_sas_port)
		return -ENOMEM;

	rphy = sas_end_device_alloc(hpsa_sas_port->port);
	if (!rphy) {
		rc = -ENODEV;
		goto free_sas_port;
	}

	hpsa_sas_port->rphy = rphy;
	device->sas_port = hpsa_sas_port;

	rc = hpsa_sas_port_add_rphy(hpsa_sas_port, rphy);
	if (rc)
		goto free_sas_port;

	return 0;

free_sas_port:
	hpsa_free_sas_port(hpsa_sas_port);
	device->sas_port = NULL;

	return rc;
}

static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device)
{
	if (device->sas_port) {
		hpsa_free_sas_port(device->sas_port);
		device->sas_port = NULL;
	}
}

static int
hpsa_sas_get_linkerrors(struct sas_phy *phy)
{
	return 0;
}

static int
hpsa_sas_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
{
9638
	*identifier = 0;
K
Kevin Barnett 已提交
9639 9640 9641 9642 9643 9644 9645 9646 9647 9648 9649 9650 9651 9652 9653 9654 9655 9656 9657 9658 9659 9660 9661 9662 9663 9664 9665 9666 9667 9668 9669 9670 9671 9672 9673 9674 9675 9676 9677 9678 9679 9680 9681 9682 9683 9684 9685 9686 9687 9688 9689 9690 9691 9692 9693 9694 9695 9696
	return 0;
}

static int
hpsa_sas_get_bay_identifier(struct sas_rphy *rphy)
{
	return -ENXIO;
}

static int
hpsa_sas_phy_reset(struct sas_phy *phy, int hard_reset)
{
	return 0;
}

static int
hpsa_sas_phy_enable(struct sas_phy *phy, int enable)
{
	return 0;
}

static int
hpsa_sas_phy_setup(struct sas_phy *phy)
{
	return 0;
}

static void
hpsa_sas_phy_release(struct sas_phy *phy)
{
}

static int
hpsa_sas_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
{
	return -EINVAL;
}

/* SMP = Serial Management Protocol */
static int
hpsa_sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
struct request *req)
{
	return -EINVAL;
}

static struct sas_function_template hpsa_sas_transport_functions = {
	.get_linkerrors = hpsa_sas_get_linkerrors,
	.get_enclosure_identifier = hpsa_sas_get_enclosure_identifier,
	.get_bay_identifier = hpsa_sas_get_bay_identifier,
	.phy_reset = hpsa_sas_phy_reset,
	.phy_enable = hpsa_sas_phy_enable,
	.phy_setup = hpsa_sas_phy_setup,
	.phy_release = hpsa_sas_phy_release,
	.set_phy_speed = hpsa_sas_phy_speed,
	.smp_handler = hpsa_sas_smp_handler,
};

9697 9698 9699 9700 9701 9702
/*
 *  This is it.  Register the PCI driver information for the cards we control
 *  the OS will call our registered routines when it finds one of our cards.
 */
static int __init hpsa_init(void)
{
K
Kevin Barnett 已提交
9703 9704 9705 9706 9707 9708 9709 9710 9711 9712 9713 9714 9715
	int rc;

	hpsa_sas_transport_template =
		sas_attach_transport(&hpsa_sas_transport_functions);
	if (!hpsa_sas_transport_template)
		return -ENODEV;

	rc = pci_register_driver(&hpsa_pci_driver);

	if (rc)
		sas_release_transport(hpsa_sas_transport_template);

	return rc;
9716 9717 9718 9719 9720
}

static void __exit hpsa_cleanup(void)
{
	pci_unregister_driver(&hpsa_pci_driver);
K
Kevin Barnett 已提交
9721
	sas_release_transport(hpsa_sas_transport_template);
9722 9723
}

9724 9725
static void __attribute__((unused)) verify_offsets(void)
{
9726 9727 9728 9729 9730 9731 9732 9733 9734 9735 9736 9737 9738 9739 9740 9741 9742 9743 9744 9745 9746 9747
#define VERIFY_OFFSET(member, offset) \
	BUILD_BUG_ON(offsetof(struct raid_map_data, member) != offset)

	VERIFY_OFFSET(structure_size, 0);
	VERIFY_OFFSET(volume_blk_size, 4);
	VERIFY_OFFSET(volume_blk_cnt, 8);
	VERIFY_OFFSET(phys_blk_shift, 16);
	VERIFY_OFFSET(parity_rotation_shift, 17);
	VERIFY_OFFSET(strip_size, 18);
	VERIFY_OFFSET(disk_starting_blk, 20);
	VERIFY_OFFSET(disk_blk_cnt, 28);
	VERIFY_OFFSET(data_disks_per_row, 36);
	VERIFY_OFFSET(metadata_disks_per_row, 38);
	VERIFY_OFFSET(row_cnt, 40);
	VERIFY_OFFSET(layout_map_count, 42);
	VERIFY_OFFSET(flags, 44);
	VERIFY_OFFSET(dekindex, 46);
	/* VERIFY_OFFSET(reserved, 48 */
	VERIFY_OFFSET(data, 64);

#undef VERIFY_OFFSET

9748 9749 9750 9751 9752 9753 9754 9755 9756 9757 9758 9759 9760 9761 9762 9763 9764 9765 9766 9767 9768 9769
#define VERIFY_OFFSET(member, offset) \
	BUILD_BUG_ON(offsetof(struct io_accel2_cmd, member) != offset)

	VERIFY_OFFSET(IU_type, 0);
	VERIFY_OFFSET(direction, 1);
	VERIFY_OFFSET(reply_queue, 2);
	/* VERIFY_OFFSET(reserved1, 3);  */
	VERIFY_OFFSET(scsi_nexus, 4);
	VERIFY_OFFSET(Tag, 8);
	VERIFY_OFFSET(cdb, 16);
	VERIFY_OFFSET(cciss_lun, 32);
	VERIFY_OFFSET(data_len, 40);
	VERIFY_OFFSET(cmd_priority_task_attr, 44);
	VERIFY_OFFSET(sg_count, 45);
	/* VERIFY_OFFSET(reserved3 */
	VERIFY_OFFSET(err_ptr, 48);
	VERIFY_OFFSET(err_len, 56);
	/* VERIFY_OFFSET(reserved4  */
	VERIFY_OFFSET(sg, 64);

#undef VERIFY_OFFSET

9770 9771 9772 9773 9774 9775 9776 9777 9778 9779 9780 9781 9782 9783 9784 9785 9786 9787 9788 9789 9790 9791 9792 9793 9794
#define VERIFY_OFFSET(member, offset) \
	BUILD_BUG_ON(offsetof(struct io_accel1_cmd, member) != offset)

	VERIFY_OFFSET(dev_handle, 0x00);
	VERIFY_OFFSET(reserved1, 0x02);
	VERIFY_OFFSET(function, 0x03);
	VERIFY_OFFSET(reserved2, 0x04);
	VERIFY_OFFSET(err_info, 0x0C);
	VERIFY_OFFSET(reserved3, 0x10);
	VERIFY_OFFSET(err_info_len, 0x12);
	VERIFY_OFFSET(reserved4, 0x13);
	VERIFY_OFFSET(sgl_offset, 0x14);
	VERIFY_OFFSET(reserved5, 0x15);
	VERIFY_OFFSET(transfer_len, 0x1C);
	VERIFY_OFFSET(reserved6, 0x20);
	VERIFY_OFFSET(io_flags, 0x24);
	VERIFY_OFFSET(reserved7, 0x26);
	VERIFY_OFFSET(LUN, 0x34);
	VERIFY_OFFSET(control, 0x3C);
	VERIFY_OFFSET(CDB, 0x40);
	VERIFY_OFFSET(reserved8, 0x50);
	VERIFY_OFFSET(host_context_flags, 0x60);
	VERIFY_OFFSET(timeout_sec, 0x62);
	VERIFY_OFFSET(ReplyQueue, 0x64);
	VERIFY_OFFSET(reserved9, 0x65);
9795
	VERIFY_OFFSET(tag, 0x68);
9796 9797 9798 9799 9800 9801
	VERIFY_OFFSET(host_addr, 0x70);
	VERIFY_OFFSET(CISS_LUN, 0x78);
	VERIFY_OFFSET(SG, 0x78 + 8);
#undef VERIFY_OFFSET
}

9802 9803
module_init(hpsa_init);
module_exit(hpsa_cleanup);