xref: /openbmc/linux/drivers/scsi/pm8001/pm8001_ctl.c (revision b34e08d5)
1 /*
2  * PMC-Sierra 8001/8081/8088/8089 SAS/SATA based host adapters driver
3  *
4  * Copyright (c) 2008-2009 USI Co., Ltd.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions, and the following disclaimer,
12  *    without modification.
13  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
14  *    substantially similar to the "NO WARRANTY" disclaimer below
15  *    ("Disclaimer") and any redistribution must be conditioned upon
16  *    including a substantially similar Disclaimer requirement for further
17  *    binary redistribution.
18  * 3. Neither the names of the above-listed copyright holders nor the names
19  *    of any contributors may be used to endorse or promote products derived
20  *    from this software without specific prior written permission.
21  *
22  * Alternatively, this software may be distributed under the terms of the
23  * GNU General Public License ("GPL") version 2 as published by the Free
24  * Software Foundation.
25  *
26  * NO WARRANTY
27  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
29  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
30  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
31  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
35  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
36  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37  * POSSIBILITY OF SUCH DAMAGES.
38  *
39  */
40 #include <linux/firmware.h>
41 #include <linux/slab.h>
42 #include "pm8001_sas.h"
43 #include "pm8001_ctl.h"
44 
45 /* scsi host attributes */
46 
47 /**
48  * pm8001_ctl_mpi_interface_rev_show - MPI interface revision number
49  * @cdev: pointer to embedded class device
50  * @buf: the buffer returned
51  *
52  * A sysfs 'read-only' shost attribute.
53  */
54 static ssize_t pm8001_ctl_mpi_interface_rev_show(struct device *cdev,
55 	struct device_attribute *attr, char *buf)
56 {
57 	struct Scsi_Host *shost = class_to_shost(cdev);
58 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
59 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
60 
61 	if (pm8001_ha->chip_id == chip_8001) {
62 		return snprintf(buf, PAGE_SIZE, "%d\n",
63 			pm8001_ha->main_cfg_tbl.pm8001_tbl.interface_rev);
64 	} else {
65 		return snprintf(buf, PAGE_SIZE, "%d\n",
66 			pm8001_ha->main_cfg_tbl.pm80xx_tbl.interface_rev);
67 	}
68 }
69 static
70 DEVICE_ATTR(interface_rev, S_IRUGO, pm8001_ctl_mpi_interface_rev_show, NULL);
71 
72 /**
73  * pm8001_ctl_fw_version_show - firmware version
74  * @cdev: pointer to embedded class device
75  * @buf: the buffer returned
76  *
77  * A sysfs 'read-only' shost attribute.
78  */
79 static ssize_t pm8001_ctl_fw_version_show(struct device *cdev,
80 	struct device_attribute *attr, char *buf)
81 {
82 	struct Scsi_Host *shost = class_to_shost(cdev);
83 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
84 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
85 
86 	if (pm8001_ha->chip_id == chip_8001) {
87 		return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
88 		(u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 24),
89 		(u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 16),
90 		(u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 8),
91 		(u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev));
92 	} else {
93 		return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
94 		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 24),
95 		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 16),
96 		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 8),
97 		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev));
98 	}
99 }
100 static DEVICE_ATTR(fw_version, S_IRUGO, pm8001_ctl_fw_version_show, NULL);
101 /**
102  * pm8001_ctl_max_out_io_show - max outstanding io supported
103  * @cdev: pointer to embedded class device
104  * @buf: the buffer returned
105  *
106  * A sysfs 'read-only' shost attribute.
107  */
108 static ssize_t pm8001_ctl_max_out_io_show(struct device *cdev,
109 	struct device_attribute *attr, char *buf)
110 {
111 	struct Scsi_Host *shost = class_to_shost(cdev);
112 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
113 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
114 
115 	if (pm8001_ha->chip_id == chip_8001) {
116 		return snprintf(buf, PAGE_SIZE, "%d\n",
117 			pm8001_ha->main_cfg_tbl.pm8001_tbl.max_out_io);
118 	} else {
119 		return snprintf(buf, PAGE_SIZE, "%d\n",
120 			pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_out_io);
121 	}
122 }
123 static DEVICE_ATTR(max_out_io, S_IRUGO, pm8001_ctl_max_out_io_show, NULL);
124 /**
125  * pm8001_ctl_max_devices_show - max devices support
126  * @cdev: pointer to embedded class device
127  * @buf: the buffer returned
128  *
129  * A sysfs 'read-only' shost attribute.
130  */
131 static ssize_t pm8001_ctl_max_devices_show(struct device *cdev,
132 	struct device_attribute *attr, char *buf)
133 {
134 	struct Scsi_Host *shost = class_to_shost(cdev);
135 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
136 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
137 
138 	if (pm8001_ha->chip_id == chip_8001) {
139 		return snprintf(buf, PAGE_SIZE, "%04d\n",
140 			(u16)(pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl >> 16)
141 			);
142 	} else {
143 		return snprintf(buf, PAGE_SIZE, "%04d\n",
144 			(u16)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl >> 16)
145 			);
146 	}
147 }
148 static DEVICE_ATTR(max_devices, S_IRUGO, pm8001_ctl_max_devices_show, NULL);
149 /**
150  * pm8001_ctl_max_sg_list_show - max sg list supported iff not 0.0 for no
151  * hardware limitation
152  * @cdev: pointer to embedded class device
153  * @buf: the buffer returned
154  *
155  * A sysfs 'read-only' shost attribute.
156  */
157 static ssize_t pm8001_ctl_max_sg_list_show(struct device *cdev,
158 	struct device_attribute *attr, char *buf)
159 {
160 	struct Scsi_Host *shost = class_to_shost(cdev);
161 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
162 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
163 
164 	if (pm8001_ha->chip_id == chip_8001) {
165 		return snprintf(buf, PAGE_SIZE, "%04d\n",
166 			pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl & 0x0000FFFF
167 			);
168 	} else {
169 		return snprintf(buf, PAGE_SIZE, "%04d\n",
170 			pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl & 0x0000FFFF
171 			);
172 	}
173 }
174 static DEVICE_ATTR(max_sg_list, S_IRUGO, pm8001_ctl_max_sg_list_show, NULL);
175 
176 #define SAS_1_0 0x1
177 #define SAS_1_1 0x2
178 #define SAS_2_0 0x4
179 
180 static ssize_t
181 show_sas_spec_support_status(unsigned int mode, char *buf)
182 {
183 	ssize_t len = 0;
184 
185 	if (mode & SAS_1_1)
186 		len = sprintf(buf, "%s", "SAS1.1");
187 	if (mode & SAS_2_0)
188 		len += sprintf(buf + len, "%s%s", len ? ", " : "", "SAS2.0");
189 	len += sprintf(buf + len, "\n");
190 
191 	return len;
192 }
193 
194 /**
195  * pm8001_ctl_sas_spec_support_show - sas spec supported
196  * @cdev: pointer to embedded class device
197  * @buf: the buffer returned
198  *
199  * A sysfs 'read-only' shost attribute.
200  */
201 static ssize_t pm8001_ctl_sas_spec_support_show(struct device *cdev,
202 	struct device_attribute *attr, char *buf)
203 {
204 	unsigned int mode;
205 	struct Scsi_Host *shost = class_to_shost(cdev);
206 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
207 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
208 	/* fe000000 means supports SAS2.1 */
209 	if (pm8001_ha->chip_id == chip_8001)
210 		mode = (pm8001_ha->main_cfg_tbl.pm8001_tbl.ctrl_cap_flag &
211 							0xfe000000)>>25;
212 	else
213 		/* fe000000 means supports SAS2.1 */
214 		mode = (pm8001_ha->main_cfg_tbl.pm80xx_tbl.ctrl_cap_flag &
215 							0xfe000000)>>25;
216 	return show_sas_spec_support_status(mode, buf);
217 }
218 static DEVICE_ATTR(sas_spec_support, S_IRUGO,
219 		   pm8001_ctl_sas_spec_support_show, NULL);
220 
221 /**
222  * pm8001_ctl_sas_address_show - sas address
223  * @cdev: pointer to embedded class device
224  * @buf: the buffer returned
225  *
226  * This is the controller sas address
227  *
228  * A sysfs 'read-only' shost attribute.
229  */
230 static ssize_t pm8001_ctl_host_sas_address_show(struct device *cdev,
231 	struct device_attribute *attr, char *buf)
232 {
233 	struct Scsi_Host *shost = class_to_shost(cdev);
234 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
235 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
236 	return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
237 			be64_to_cpu(*(__be64 *)pm8001_ha->sas_addr));
238 }
239 static DEVICE_ATTR(host_sas_address, S_IRUGO,
240 		   pm8001_ctl_host_sas_address_show, NULL);
241 
242 /**
243  * pm8001_ctl_logging_level_show - logging level
244  * @cdev: pointer to embedded class device
245  * @buf: the buffer returned
246  *
247  * A sysfs 'read/write' shost attribute.
248  */
249 static ssize_t pm8001_ctl_logging_level_show(struct device *cdev,
250 	struct device_attribute *attr, char *buf)
251 {
252 	struct Scsi_Host *shost = class_to_shost(cdev);
253 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
254 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
255 
256 	return snprintf(buf, PAGE_SIZE, "%08xh\n", pm8001_ha->logging_level);
257 }
258 static ssize_t pm8001_ctl_logging_level_store(struct device *cdev,
259 	struct device_attribute *attr, const char *buf, size_t count)
260 {
261 	struct Scsi_Host *shost = class_to_shost(cdev);
262 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
263 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
264 	int val = 0;
265 
266 	if (sscanf(buf, "%x", &val) != 1)
267 		return -EINVAL;
268 
269 	pm8001_ha->logging_level = val;
270 	return strlen(buf);
271 }
272 
273 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
274 	pm8001_ctl_logging_level_show, pm8001_ctl_logging_level_store);
275 /**
276  * pm8001_ctl_aap_log_show - aap1 event log
277  * @cdev: pointer to embedded class device
278  * @buf: the buffer returned
279  *
280  * A sysfs 'read-only' shost attribute.
281  */
282 static ssize_t pm8001_ctl_aap_log_show(struct device *cdev,
283 	struct device_attribute *attr, char *buf)
284 {
285 	struct Scsi_Host *shost = class_to_shost(cdev);
286 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
287 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
288 	int i;
289 #define AAP1_MEMMAP(r, c) \
290 	(*(u32 *)((u8*)pm8001_ha->memoryMap.region[AAP1].virt_ptr + (r) * 32 \
291 	+ (c)))
292 
293 	char *str = buf;
294 	int max = 2;
295 	for (i = 0; i < max; i++) {
296 		str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
297 			       "0x%08x 0x%08x\n",
298 			       AAP1_MEMMAP(i, 0),
299 			       AAP1_MEMMAP(i, 4),
300 			       AAP1_MEMMAP(i, 8),
301 			       AAP1_MEMMAP(i, 12),
302 			       AAP1_MEMMAP(i, 16),
303 			       AAP1_MEMMAP(i, 20),
304 			       AAP1_MEMMAP(i, 24),
305 			       AAP1_MEMMAP(i, 28));
306 	}
307 
308 	return str - buf;
309 }
310 static DEVICE_ATTR(aap_log, S_IRUGO, pm8001_ctl_aap_log_show, NULL);
311 /**
312  * pm8001_ctl_ib_queue_log_show - Out bound Queue log
313  * @cdev:pointer to embedded class device
314  * @buf: the buffer returned
315  * A sysfs 'read-only' shost attribute.
316  */
317 static ssize_t pm8001_ctl_ib_queue_log_show(struct device *cdev,
318 	struct device_attribute *attr, char *buf)
319 {
320 	struct Scsi_Host *shost = class_to_shost(cdev);
321 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
322 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
323 	int offset;
324 	char *str = buf;
325 	int start = 0;
326 #define IB_MEMMAP(c)	\
327 		(*(u32 *)((u8 *)pm8001_ha->	\
328 		memoryMap.region[IB].virt_ptr +	\
329 		pm8001_ha->evtlog_ib_offset + (c)))
330 
331 	for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
332 		str += sprintf(str, "0x%08x\n", IB_MEMMAP(start));
333 		start = start + 4;
334 	}
335 	pm8001_ha->evtlog_ib_offset += SYSFS_OFFSET;
336 	if (((pm8001_ha->evtlog_ib_offset) % (PM80XX_IB_OB_QUEUE_SIZE)) == 0)
337 		pm8001_ha->evtlog_ib_offset = 0;
338 
339 	return str - buf;
340 }
341 
342 static DEVICE_ATTR(ib_log, S_IRUGO, pm8001_ctl_ib_queue_log_show, NULL);
343 /**
344  * pm8001_ctl_ob_queue_log_show - Out bound Queue log
345  * @cdev:pointer to embedded class device
346  * @buf: the buffer returned
347  * A sysfs 'read-only' shost attribute.
348  */
349 
350 static ssize_t pm8001_ctl_ob_queue_log_show(struct device *cdev,
351 	struct device_attribute *attr, char *buf)
352 {
353 	struct Scsi_Host *shost = class_to_shost(cdev);
354 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
355 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
356 	int offset;
357 	char *str = buf;
358 	int start = 0;
359 #define OB_MEMMAP(c)	\
360 		(*(u32 *)((u8 *)pm8001_ha->	\
361 		memoryMap.region[OB].virt_ptr +	\
362 		pm8001_ha->evtlog_ob_offset + (c)))
363 
364 	for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
365 		str += sprintf(str, "0x%08x\n", OB_MEMMAP(start));
366 		start = start + 4;
367 	}
368 	pm8001_ha->evtlog_ob_offset += SYSFS_OFFSET;
369 	if (((pm8001_ha->evtlog_ob_offset) % (PM80XX_IB_OB_QUEUE_SIZE)) == 0)
370 		pm8001_ha->evtlog_ob_offset = 0;
371 
372 	return str - buf;
373 }
374 static DEVICE_ATTR(ob_log, S_IRUGO, pm8001_ctl_ob_queue_log_show, NULL);
375 /**
376  * pm8001_ctl_bios_version_show - Bios version Display
377  * @cdev:pointer to embedded class device
378  * @buf:the buffer returned
379  * A sysfs 'read-only' shost attribute.
380  */
381 static ssize_t pm8001_ctl_bios_version_show(struct device *cdev,
382 	struct device_attribute *attr, char *buf)
383 {
384 	struct Scsi_Host *shost = class_to_shost(cdev);
385 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
386 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
387 	char *str = buf;
388 	void *virt_addr;
389 	int bios_index;
390 	DECLARE_COMPLETION_ONSTACK(completion);
391 	struct pm8001_ioctl_payload payload;
392 
393 	pm8001_ha->nvmd_completion = &completion;
394 	payload.minor_function = 7;
395 	payload.offset = 0;
396 	payload.length = 4096;
397 	payload.func_specific = kzalloc(4096, GFP_KERNEL);
398 	PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload);
399 	wait_for_completion(&completion);
400 	virt_addr = pm8001_ha->memoryMap.region[NVMD].virt_ptr;
401 	for (bios_index = BIOSOFFSET; bios_index < BIOS_OFFSET_LIMIT;
402 		bios_index++)
403 		str += sprintf(str, "%c",
404 			*((u8 *)((u8 *)virt_addr+bios_index)));
405 	return str - buf;
406 }
407 static DEVICE_ATTR(bios_version, S_IRUGO, pm8001_ctl_bios_version_show, NULL);
408 /**
409  * pm8001_ctl_aap_log_show - IOP event log
410  * @cdev: pointer to embedded class device
411  * @buf: the buffer returned
412  *
413  * A sysfs 'read-only' shost attribute.
414  */
415 static ssize_t pm8001_ctl_iop_log_show(struct device *cdev,
416 	struct device_attribute *attr, char *buf)
417 {
418 	struct Scsi_Host *shost = class_to_shost(cdev);
419 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
420 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
421 #define IOP_MEMMAP(r, c) \
422 	(*(u32 *)((u8*)pm8001_ha->memoryMap.region[IOP].virt_ptr + (r) * 32 \
423 	+ (c)))
424 	int i;
425 	char *str = buf;
426 	int max = 2;
427 	for (i = 0; i < max; i++) {
428 		str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
429 			       "0x%08x 0x%08x\n",
430 			       IOP_MEMMAP(i, 0),
431 			       IOP_MEMMAP(i, 4),
432 			       IOP_MEMMAP(i, 8),
433 			       IOP_MEMMAP(i, 12),
434 			       IOP_MEMMAP(i, 16),
435 			       IOP_MEMMAP(i, 20),
436 			       IOP_MEMMAP(i, 24),
437 			       IOP_MEMMAP(i, 28));
438 	}
439 
440 	return str - buf;
441 }
442 static DEVICE_ATTR(iop_log, S_IRUGO, pm8001_ctl_iop_log_show, NULL);
443 
444 /**
445  ** pm8001_ctl_fatal_log_show - fatal error logging
446  ** @cdev:pointer to embedded class device
447  ** @buf: the buffer returned
448  **
449  ** A sysfs 'read-only' shost attribute.
450  **/
451 
452 static ssize_t pm8001_ctl_fatal_log_show(struct device *cdev,
453 	struct device_attribute *attr, char *buf)
454 {
455 	ssize_t count;
456 
457 	count = pm80xx_get_fatal_dump(cdev, attr, buf);
458 	return count;
459 }
460 
461 static DEVICE_ATTR(fatal_log, S_IRUGO, pm8001_ctl_fatal_log_show, NULL);
462 
463 
464 /**
465  ** pm8001_ctl_gsm_log_show - gsm dump collection
466  ** @cdev:pointer to embedded class device
467  ** @buf: the buffer returned
468  **A sysfs 'read-only' shost attribute.
469  **/
470 static ssize_t pm8001_ctl_gsm_log_show(struct device *cdev,
471 	struct device_attribute *attr, char *buf)
472 {
473 	ssize_t count;
474 
475 	count = pm8001_get_gsm_dump(cdev, SYSFS_OFFSET, buf);
476 	return count;
477 }
478 
479 static DEVICE_ATTR(gsm_log, S_IRUGO, pm8001_ctl_gsm_log_show, NULL);
480 
481 #define FLASH_CMD_NONE      0x00
482 #define FLASH_CMD_UPDATE    0x01
483 #define FLASH_CMD_SET_NVMD    0x02
484 
485 struct flash_command {
486      u8      command[8];
487      int     code;
488 };
489 
490 static struct flash_command flash_command_table[] =
491 {
492      {"set_nvmd",    FLASH_CMD_SET_NVMD},
493      {"update",      FLASH_CMD_UPDATE},
494      {"",            FLASH_CMD_NONE} /* Last entry should be NULL. */
495 };
496 
497 struct error_fw {
498      char    *reason;
499      int     err_code;
500 };
501 
502 static struct error_fw flash_error_table[] =
503 {
504      {"Failed to open fw image file",	FAIL_OPEN_BIOS_FILE},
505      {"image header mismatch",		FLASH_UPDATE_HDR_ERR},
506      {"image offset mismatch",		FLASH_UPDATE_OFFSET_ERR},
507      {"image CRC Error",		FLASH_UPDATE_CRC_ERR},
508      {"image length Error.",		FLASH_UPDATE_LENGTH_ERR},
509      {"Failed to program flash chip",	FLASH_UPDATE_HW_ERR},
510      {"Flash chip not supported.",	FLASH_UPDATE_DNLD_NOT_SUPPORTED},
511      {"Flash update disabled.",		FLASH_UPDATE_DISABLED},
512      {"Flash in progress",		FLASH_IN_PROGRESS},
513      {"Image file size Error",		FAIL_FILE_SIZE},
514      {"Input parameter error",		FAIL_PARAMETERS},
515      {"Out of memory",			FAIL_OUT_MEMORY},
516      {"OK", 0}	/* Last entry err_code = 0. */
517 };
518 
519 static int pm8001_set_nvmd(struct pm8001_hba_info *pm8001_ha)
520 {
521 	struct pm8001_ioctl_payload	*payload;
522 	DECLARE_COMPLETION_ONSTACK(completion);
523 	u8		*ioctlbuffer = NULL;
524 	u32		length = 0;
525 	u32		ret = 0;
526 
527 	length = 1024 * 5 + sizeof(*payload) - 1;
528 	ioctlbuffer = kzalloc(length, GFP_KERNEL);
529 	if (!ioctlbuffer)
530 		return -ENOMEM;
531 	if ((pm8001_ha->fw_image->size <= 0) ||
532 	    (pm8001_ha->fw_image->size > 4096)) {
533 		ret = FAIL_FILE_SIZE;
534 		goto out;
535 	}
536 	payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
537 	memcpy((u8 *)&payload->func_specific, (u8 *)pm8001_ha->fw_image->data,
538 				pm8001_ha->fw_image->size);
539 	payload->length = pm8001_ha->fw_image->size;
540 	payload->id = 0;
541 	payload->minor_function = 0x1;
542 	pm8001_ha->nvmd_completion = &completion;
543 	ret = PM8001_CHIP_DISP->set_nvmd_req(pm8001_ha, payload);
544 	wait_for_completion(&completion);
545 out:
546 	kfree(ioctlbuffer);
547 	return ret;
548 }
549 
550 static int pm8001_update_flash(struct pm8001_hba_info *pm8001_ha)
551 {
552 	struct pm8001_ioctl_payload	*payload;
553 	DECLARE_COMPLETION_ONSTACK(completion);
554 	u8		*ioctlbuffer = NULL;
555 	u32		length = 0;
556 	struct fw_control_info	*fwControl;
557 	u32		loopNumber, loopcount = 0;
558 	u32		sizeRead = 0;
559 	u32		partitionSize, partitionSizeTmp;
560 	u32		ret = 0;
561 	u32		partitionNumber = 0;
562 	struct pm8001_fw_image_header *image_hdr;
563 
564 	length = 1024 * 16 + sizeof(*payload) - 1;
565 	ioctlbuffer = kzalloc(length, GFP_KERNEL);
566 	image_hdr = (struct pm8001_fw_image_header *)pm8001_ha->fw_image->data;
567 	if (!ioctlbuffer)
568 		return -ENOMEM;
569 	if (pm8001_ha->fw_image->size < 28) {
570 		ret = FAIL_FILE_SIZE;
571 		goto out;
572 	}
573 
574 	while (sizeRead < pm8001_ha->fw_image->size) {
575 		partitionSizeTmp =
576 			*(u32 *)((u8 *)&image_hdr->image_length + sizeRead);
577 		partitionSize = be32_to_cpu(partitionSizeTmp);
578 		loopcount = (partitionSize + HEADER_LEN)/IOCTL_BUF_SIZE;
579 		if (loopcount % IOCTL_BUF_SIZE)
580 			loopcount++;
581 		if (loopcount == 0)
582 			loopcount++;
583 		for (loopNumber = 0; loopNumber < loopcount; loopNumber++) {
584 			payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
585 			payload->length = 1024*16;
586 			payload->id = 0;
587 			fwControl =
588 			      (struct fw_control_info *)&payload->func_specific;
589 			fwControl->len = IOCTL_BUF_SIZE;   /* IN */
590 			fwControl->size = partitionSize + HEADER_LEN;/* IN */
591 			fwControl->retcode = 0;/* OUT */
592 			fwControl->offset = loopNumber * IOCTL_BUF_SIZE;/*OUT */
593 
594 		/* for the last chunk of data in case file size is not even with
595 		4k, load only the rest*/
596 		if (((loopcount-loopNumber) == 1) &&
597 			((partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE)) {
598 			fwControl->len =
599 				(partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
600 			memcpy((u8 *)fwControl->buffer,
601 				(u8 *)pm8001_ha->fw_image->data + sizeRead,
602 				(partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE);
603 			sizeRead +=
604 				(partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
605 		} else {
606 			memcpy((u8 *)fwControl->buffer,
607 				(u8 *)pm8001_ha->fw_image->data + sizeRead,
608 				IOCTL_BUF_SIZE);
609 			sizeRead += IOCTL_BUF_SIZE;
610 		}
611 
612 		pm8001_ha->nvmd_completion = &completion;
613 		ret = PM8001_CHIP_DISP->fw_flash_update_req(pm8001_ha, payload);
614 		wait_for_completion(&completion);
615 		if (ret || (fwControl->retcode > FLASH_UPDATE_IN_PROGRESS)) {
616 			ret = fwControl->retcode;
617 			kfree(ioctlbuffer);
618 			ioctlbuffer = NULL;
619 			break;
620 		}
621 	}
622 	if (ret)
623 		break;
624 	partitionNumber++;
625 }
626 out:
627 	kfree(ioctlbuffer);
628 	return ret;
629 }
630 static ssize_t pm8001_store_update_fw(struct device *cdev,
631 				      struct device_attribute *attr,
632 				      const char *buf, size_t count)
633 {
634 	struct Scsi_Host *shost = class_to_shost(cdev);
635 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
636 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
637 	char *cmd_ptr, *filename_ptr;
638 	int res, i;
639 	int flash_command = FLASH_CMD_NONE;
640 	int err = 0;
641 	if (!capable(CAP_SYS_ADMIN))
642 		return -EACCES;
643 
644 	cmd_ptr = kzalloc(count*2, GFP_KERNEL);
645 
646 	if (!cmd_ptr) {
647 		err = FAIL_OUT_MEMORY;
648 		goto out;
649 	}
650 
651 	filename_ptr = cmd_ptr + count;
652 	res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
653 	if (res != 2) {
654 		err = FAIL_PARAMETERS;
655 		goto out1;
656 	}
657 
658 	for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
659 		if (!memcmp(flash_command_table[i].command,
660 				 cmd_ptr, strlen(cmd_ptr))) {
661 			flash_command = flash_command_table[i].code;
662 			break;
663 		}
664 	}
665 	if (flash_command == FLASH_CMD_NONE) {
666 		err = FAIL_PARAMETERS;
667 		goto out1;
668 	}
669 
670 	if (pm8001_ha->fw_status == FLASH_IN_PROGRESS) {
671 		err = FLASH_IN_PROGRESS;
672 		goto out1;
673 	}
674 	err = request_firmware(&pm8001_ha->fw_image,
675 			       filename_ptr,
676 			       pm8001_ha->dev);
677 
678 	if (err) {
679 		PM8001_FAIL_DBG(pm8001_ha,
680 			pm8001_printk("Failed to load firmware image file %s,"
681 			" error %d\n", filename_ptr, err));
682 		err = FAIL_OPEN_BIOS_FILE;
683 		goto out1;
684 	}
685 
686 	switch (flash_command) {
687 	case FLASH_CMD_UPDATE:
688 		pm8001_ha->fw_status = FLASH_IN_PROGRESS;
689 		err = pm8001_update_flash(pm8001_ha);
690 		break;
691 	case FLASH_CMD_SET_NVMD:
692 		pm8001_ha->fw_status = FLASH_IN_PROGRESS;
693 		err = pm8001_set_nvmd(pm8001_ha);
694 		break;
695 	default:
696 		pm8001_ha->fw_status = FAIL_PARAMETERS;
697 		err = FAIL_PARAMETERS;
698 		break;
699 	}
700 	release_firmware(pm8001_ha->fw_image);
701 out1:
702 	kfree(cmd_ptr);
703 out:
704 	pm8001_ha->fw_status = err;
705 
706 	if (!err)
707 		return count;
708 	else
709 		return -err;
710 }
711 
712 static ssize_t pm8001_show_update_fw(struct device *cdev,
713 				     struct device_attribute *attr, char *buf)
714 {
715 	int i;
716 	struct Scsi_Host *shost = class_to_shost(cdev);
717 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
718 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
719 
720 	for (i = 0; flash_error_table[i].err_code != 0; i++) {
721 		if (flash_error_table[i].err_code == pm8001_ha->fw_status)
722 			break;
723 	}
724 	if (pm8001_ha->fw_status != FLASH_IN_PROGRESS)
725 		pm8001_ha->fw_status = FLASH_OK;
726 
727 	return snprintf(buf, PAGE_SIZE, "status=%x %s\n",
728 			flash_error_table[i].err_code,
729 			flash_error_table[i].reason);
730 }
731 
732 static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUGO,
733 	pm8001_show_update_fw, pm8001_store_update_fw);
734 struct device_attribute *pm8001_host_attrs[] = {
735 	&dev_attr_interface_rev,
736 	&dev_attr_fw_version,
737 	&dev_attr_update_fw,
738 	&dev_attr_aap_log,
739 	&dev_attr_iop_log,
740 	&dev_attr_fatal_log,
741 	&dev_attr_gsm_log,
742 	&dev_attr_max_out_io,
743 	&dev_attr_max_devices,
744 	&dev_attr_max_sg_list,
745 	&dev_attr_sas_spec_support,
746 	&dev_attr_logging_level,
747 	&dev_attr_host_sas_address,
748 	&dev_attr_bios_version,
749 	&dev_attr_ib_log,
750 	&dev_attr_ob_log,
751 	NULL,
752 };
753 
754