xref: /openbmc/linux/drivers/scsi/pm8001/pm8001_ctl.c (revision 293d5b43)
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 	int bios_index;
389 	DECLARE_COMPLETION_ONSTACK(completion);
390 	struct pm8001_ioctl_payload payload;
391 
392 	pm8001_ha->nvmd_completion = &completion;
393 	payload.minor_function = 7;
394 	payload.offset = 0;
395 	payload.length = 4096;
396 	payload.func_specific = kzalloc(4096, GFP_KERNEL);
397 	if (!payload.func_specific)
398 		return -ENOMEM;
399 	if (PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload)) {
400 		kfree(payload.func_specific);
401 		return -ENOMEM;
402 	}
403 	wait_for_completion(&completion);
404 	for (bios_index = BIOSOFFSET; bios_index < BIOS_OFFSET_LIMIT;
405 		bios_index++)
406 		str += sprintf(str, "%c",
407 			*(payload.func_specific+bios_index));
408 	kfree(payload.func_specific);
409 	return str - buf;
410 }
411 static DEVICE_ATTR(bios_version, S_IRUGO, pm8001_ctl_bios_version_show, NULL);
412 /**
413  * pm8001_ctl_aap_log_show - IOP event log
414  * @cdev: pointer to embedded class device
415  * @buf: the buffer returned
416  *
417  * A sysfs 'read-only' shost attribute.
418  */
419 static ssize_t pm8001_ctl_iop_log_show(struct device *cdev,
420 	struct device_attribute *attr, char *buf)
421 {
422 	struct Scsi_Host *shost = class_to_shost(cdev);
423 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
424 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
425 #define IOP_MEMMAP(r, c) \
426 	(*(u32 *)((u8*)pm8001_ha->memoryMap.region[IOP].virt_ptr + (r) * 32 \
427 	+ (c)))
428 	int i;
429 	char *str = buf;
430 	int max = 2;
431 	for (i = 0; i < max; i++) {
432 		str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
433 			       "0x%08x 0x%08x\n",
434 			       IOP_MEMMAP(i, 0),
435 			       IOP_MEMMAP(i, 4),
436 			       IOP_MEMMAP(i, 8),
437 			       IOP_MEMMAP(i, 12),
438 			       IOP_MEMMAP(i, 16),
439 			       IOP_MEMMAP(i, 20),
440 			       IOP_MEMMAP(i, 24),
441 			       IOP_MEMMAP(i, 28));
442 	}
443 
444 	return str - buf;
445 }
446 static DEVICE_ATTR(iop_log, S_IRUGO, pm8001_ctl_iop_log_show, NULL);
447 
448 /**
449  ** pm8001_ctl_fatal_log_show - fatal error logging
450  ** @cdev:pointer to embedded class device
451  ** @buf: the buffer returned
452  **
453  ** A sysfs 'read-only' shost attribute.
454  **/
455 
456 static ssize_t pm8001_ctl_fatal_log_show(struct device *cdev,
457 	struct device_attribute *attr, char *buf)
458 {
459 	ssize_t count;
460 
461 	count = pm80xx_get_fatal_dump(cdev, attr, buf);
462 	return count;
463 }
464 
465 static DEVICE_ATTR(fatal_log, S_IRUGO, pm8001_ctl_fatal_log_show, NULL);
466 
467 
468 /**
469  ** pm8001_ctl_gsm_log_show - gsm dump collection
470  ** @cdev:pointer to embedded class device
471  ** @buf: the buffer returned
472  **A sysfs 'read-only' shost attribute.
473  **/
474 static ssize_t pm8001_ctl_gsm_log_show(struct device *cdev,
475 	struct device_attribute *attr, char *buf)
476 {
477 	ssize_t count;
478 
479 	count = pm8001_get_gsm_dump(cdev, SYSFS_OFFSET, buf);
480 	return count;
481 }
482 
483 static DEVICE_ATTR(gsm_log, S_IRUGO, pm8001_ctl_gsm_log_show, NULL);
484 
485 #define FLASH_CMD_NONE      0x00
486 #define FLASH_CMD_UPDATE    0x01
487 #define FLASH_CMD_SET_NVMD    0x02
488 
489 struct flash_command {
490      u8      command[8];
491      int     code;
492 };
493 
494 static struct flash_command flash_command_table[] =
495 {
496      {"set_nvmd",    FLASH_CMD_SET_NVMD},
497      {"update",      FLASH_CMD_UPDATE},
498      {"",            FLASH_CMD_NONE} /* Last entry should be NULL. */
499 };
500 
501 struct error_fw {
502      char    *reason;
503      int     err_code;
504 };
505 
506 static struct error_fw flash_error_table[] =
507 {
508      {"Failed to open fw image file",	FAIL_OPEN_BIOS_FILE},
509      {"image header mismatch",		FLASH_UPDATE_HDR_ERR},
510      {"image offset mismatch",		FLASH_UPDATE_OFFSET_ERR},
511      {"image CRC Error",		FLASH_UPDATE_CRC_ERR},
512      {"image length Error.",		FLASH_UPDATE_LENGTH_ERR},
513      {"Failed to program flash chip",	FLASH_UPDATE_HW_ERR},
514      {"Flash chip not supported.",	FLASH_UPDATE_DNLD_NOT_SUPPORTED},
515      {"Flash update disabled.",		FLASH_UPDATE_DISABLED},
516      {"Flash in progress",		FLASH_IN_PROGRESS},
517      {"Image file size Error",		FAIL_FILE_SIZE},
518      {"Input parameter error",		FAIL_PARAMETERS},
519      {"Out of memory",			FAIL_OUT_MEMORY},
520      {"OK", 0}	/* Last entry err_code = 0. */
521 };
522 
523 static int pm8001_set_nvmd(struct pm8001_hba_info *pm8001_ha)
524 {
525 	struct pm8001_ioctl_payload	*payload;
526 	DECLARE_COMPLETION_ONSTACK(completion);
527 	u8		*ioctlbuffer;
528 	u32		ret;
529 	u32		length = 1024 * 5 + sizeof(*payload) - 1;
530 
531 	if (pm8001_ha->fw_image->size > 4096) {
532 		pm8001_ha->fw_status = FAIL_FILE_SIZE;
533 		return -EFAULT;
534 	}
535 
536 	ioctlbuffer = kzalloc(length, GFP_KERNEL);
537 	if (!ioctlbuffer) {
538 		pm8001_ha->fw_status = FAIL_OUT_MEMORY;
539 		return -ENOMEM;
540 	}
541 	payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
542 	memcpy((u8 *)&payload->func_specific, (u8 *)pm8001_ha->fw_image->data,
543 				pm8001_ha->fw_image->size);
544 	payload->length = pm8001_ha->fw_image->size;
545 	payload->id = 0;
546 	payload->minor_function = 0x1;
547 	pm8001_ha->nvmd_completion = &completion;
548 	ret = PM8001_CHIP_DISP->set_nvmd_req(pm8001_ha, payload);
549 	if (ret) {
550 		pm8001_ha->fw_status = FAIL_OUT_MEMORY;
551 		goto out;
552 	}
553 	wait_for_completion(&completion);
554 out:
555 	kfree(ioctlbuffer);
556 	return ret;
557 }
558 
559 static int pm8001_update_flash(struct pm8001_hba_info *pm8001_ha)
560 {
561 	struct pm8001_ioctl_payload	*payload;
562 	DECLARE_COMPLETION_ONSTACK(completion);
563 	u8		*ioctlbuffer;
564 	struct fw_control_info	*fwControl;
565 	u32		partitionSize, partitionSizeTmp;
566 	u32		loopNumber, loopcount;
567 	struct pm8001_fw_image_header *image_hdr;
568 	u32		sizeRead = 0;
569 	u32		ret = 0;
570 	u32		length = 1024 * 16 + sizeof(*payload) - 1;
571 
572 	if (pm8001_ha->fw_image->size < 28) {
573 		pm8001_ha->fw_status = FAIL_FILE_SIZE;
574 		return -EFAULT;
575 	}
576 	ioctlbuffer = kzalloc(length, GFP_KERNEL);
577 	if (!ioctlbuffer) {
578 		pm8001_ha->fw_status = FAIL_OUT_MEMORY;
579 		return -ENOMEM;
580 	}
581 	image_hdr = (struct pm8001_fw_image_header *)pm8001_ha->fw_image->data;
582 	while (sizeRead < pm8001_ha->fw_image->size) {
583 		partitionSizeTmp =
584 			*(u32 *)((u8 *)&image_hdr->image_length + sizeRead);
585 		partitionSize = be32_to_cpu(partitionSizeTmp);
586 		loopcount = DIV_ROUND_UP(partitionSize + HEADER_LEN,
587 					IOCTL_BUF_SIZE);
588 		for (loopNumber = 0; loopNumber < loopcount; loopNumber++) {
589 			payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
590 			payload->length = 1024*16;
591 			payload->id = 0;
592 			fwControl =
593 			      (struct fw_control_info *)&payload->func_specific;
594 			fwControl->len = IOCTL_BUF_SIZE;   /* IN */
595 			fwControl->size = partitionSize + HEADER_LEN;/* IN */
596 			fwControl->retcode = 0;/* OUT */
597 			fwControl->offset = loopNumber * IOCTL_BUF_SIZE;/*OUT */
598 
599 		/* for the last chunk of data in case file size is not even with
600 		4k, load only the rest*/
601 		if (((loopcount-loopNumber) == 1) &&
602 			((partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE)) {
603 			fwControl->len =
604 				(partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
605 			memcpy((u8 *)fwControl->buffer,
606 				(u8 *)pm8001_ha->fw_image->data + sizeRead,
607 				(partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE);
608 			sizeRead +=
609 				(partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
610 		} else {
611 			memcpy((u8 *)fwControl->buffer,
612 				(u8 *)pm8001_ha->fw_image->data + sizeRead,
613 				IOCTL_BUF_SIZE);
614 			sizeRead += IOCTL_BUF_SIZE;
615 		}
616 
617 		pm8001_ha->nvmd_completion = &completion;
618 		ret = PM8001_CHIP_DISP->fw_flash_update_req(pm8001_ha, payload);
619 		if (ret) {
620 			pm8001_ha->fw_status = FAIL_OUT_MEMORY;
621 			goto out;
622 		}
623 		wait_for_completion(&completion);
624 		if (fwControl->retcode > FLASH_UPDATE_IN_PROGRESS) {
625 			pm8001_ha->fw_status = fwControl->retcode;
626 			ret = -EFAULT;
627 			goto out;
628 		}
629 		}
630 	}
631 out:
632 	kfree(ioctlbuffer);
633 	return ret;
634 }
635 static ssize_t pm8001_store_update_fw(struct device *cdev,
636 				      struct device_attribute *attr,
637 				      const char *buf, size_t count)
638 {
639 	struct Scsi_Host *shost = class_to_shost(cdev);
640 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
641 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
642 	char *cmd_ptr, *filename_ptr;
643 	int res, i;
644 	int flash_command = FLASH_CMD_NONE;
645 	int ret;
646 
647 	if (!capable(CAP_SYS_ADMIN))
648 		return -EACCES;
649 
650 	/* this test protects us from running two flash processes at once,
651 	 * so we should start with this test */
652 	if (pm8001_ha->fw_status == FLASH_IN_PROGRESS)
653 		return -EINPROGRESS;
654 	pm8001_ha->fw_status = FLASH_IN_PROGRESS;
655 
656 	cmd_ptr = kzalloc(count*2, GFP_KERNEL);
657 	if (!cmd_ptr) {
658 		pm8001_ha->fw_status = FAIL_OUT_MEMORY;
659 		return -ENOMEM;
660 	}
661 
662 	filename_ptr = cmd_ptr + count;
663 	res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
664 	if (res != 2) {
665 		pm8001_ha->fw_status = FAIL_PARAMETERS;
666 		ret = -EINVAL;
667 		goto out;
668 	}
669 
670 	for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
671 		if (!memcmp(flash_command_table[i].command,
672 				 cmd_ptr, strlen(cmd_ptr))) {
673 			flash_command = flash_command_table[i].code;
674 			break;
675 		}
676 	}
677 	if (flash_command == FLASH_CMD_NONE) {
678 		pm8001_ha->fw_status = FAIL_PARAMETERS;
679 		ret = -EINVAL;
680 		goto out;
681 	}
682 
683 	ret = request_firmware(&pm8001_ha->fw_image,
684 			       filename_ptr,
685 			       pm8001_ha->dev);
686 
687 	if (ret) {
688 		PM8001_FAIL_DBG(pm8001_ha,
689 			pm8001_printk(
690 			"Failed to load firmware image file %s,	error %d\n",
691 			filename_ptr, ret));
692 		pm8001_ha->fw_status = FAIL_OPEN_BIOS_FILE;
693 		goto out;
694 	}
695 
696 	if (FLASH_CMD_UPDATE == flash_command)
697 		ret = pm8001_update_flash(pm8001_ha);
698 	else
699 		ret = pm8001_set_nvmd(pm8001_ha);
700 
701 	release_firmware(pm8001_ha->fw_image);
702 out:
703 	kfree(cmd_ptr);
704 
705 	if (ret)
706 		return ret;
707 
708 	pm8001_ha->fw_status = FLASH_OK;
709 	return count;
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_IWUSR|S_IWGRP,
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