xref: /openbmc/linux/drivers/scsi/pm8001/pm8001_ctl.c (revision 9a29f5fc)
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 #include "pm8001_chips.h"
45 
46 /* scsi host attributes */
47 
48 /**
49  * pm8001_ctl_mpi_interface_rev_show - MPI interface revision number
50  * @cdev: pointer to embedded class device
51  * @attr: device attribute (unused)
52  * @buf: the buffer returned
53  *
54  * A sysfs 'read-only' shost attribute.
55  */
56 static ssize_t pm8001_ctl_mpi_interface_rev_show(struct device *cdev,
57 	struct device_attribute *attr, char *buf)
58 {
59 	struct Scsi_Host *shost = class_to_shost(cdev);
60 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
61 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
62 
63 	if (pm8001_ha->chip_id == chip_8001) {
64 		return snprintf(buf, PAGE_SIZE, "%d\n",
65 			pm8001_ha->main_cfg_tbl.pm8001_tbl.interface_rev);
66 	} else {
67 		return snprintf(buf, PAGE_SIZE, "%d\n",
68 			pm8001_ha->main_cfg_tbl.pm80xx_tbl.interface_rev);
69 	}
70 }
71 static
72 DEVICE_ATTR(interface_rev, S_IRUGO, pm8001_ctl_mpi_interface_rev_show, NULL);
73 
74 /**
75  * controller_fatal_error_show - check controller is under fatal err
76  * @cdev: pointer to embedded class device
77  * @attr: device attribute (unused)
78  * @buf: the buffer returned
79  *
80  * A sysfs 'read-only' shost attribute.
81  */
82 static ssize_t controller_fatal_error_show(struct device *cdev,
83 		struct device_attribute *attr, char *buf)
84 {
85 	struct Scsi_Host *shost = class_to_shost(cdev);
86 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
87 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
88 
89 	return snprintf(buf, PAGE_SIZE, "%d\n",
90 			pm8001_ha->controller_fatal_error);
91 }
92 static DEVICE_ATTR_RO(controller_fatal_error);
93 
94 /**
95  * pm8001_ctl_fw_version_show - firmware version
96  * @cdev: pointer to embedded class device
97  * @attr: device attribute (unused)
98  * @buf: the buffer returned
99  *
100  * A sysfs 'read-only' shost attribute.
101  */
102 static ssize_t pm8001_ctl_fw_version_show(struct device *cdev,
103 	struct device_attribute *attr, char *buf)
104 {
105 	struct Scsi_Host *shost = class_to_shost(cdev);
106 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
107 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
108 
109 	if (pm8001_ha->chip_id == chip_8001) {
110 		return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
111 		(u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 24),
112 		(u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 16),
113 		(u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 8),
114 		(u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev));
115 	} else {
116 		return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
117 		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 24),
118 		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 16),
119 		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 8),
120 		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev));
121 	}
122 }
123 static DEVICE_ATTR(fw_version, S_IRUGO, pm8001_ctl_fw_version_show, NULL);
124 
125 /**
126  * pm8001_ctl_ila_version_show - ila version
127  * @cdev: pointer to embedded class device
128  * @attr: device attribute (unused)
129  * @buf: the buffer returned
130  *
131  * A sysfs 'read-only' shost attribute.
132  */
133 static ssize_t pm8001_ctl_ila_version_show(struct device *cdev,
134 	struct device_attribute *attr, char *buf)
135 {
136 	struct Scsi_Host *shost = class_to_shost(cdev);
137 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
138 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
139 
140 	if (pm8001_ha->chip_id != chip_8001) {
141 		return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
142 		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 24),
143 		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 16),
144 		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 8),
145 		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version));
146 	}
147 	return 0;
148 }
149 static DEVICE_ATTR(ila_version, 0444, pm8001_ctl_ila_version_show, NULL);
150 
151 /**
152  * pm8001_ctl_inactive_fw_version_show - Inactive firmware version number
153  * @cdev: pointer to embedded class device
154  * @attr: device attribute (unused)
155  * @buf: the buffer returned
156  *
157  * A sysfs 'read-only' shost attribute.
158  */
159 static ssize_t pm8001_ctl_inactive_fw_version_show(struct device *cdev,
160 	struct device_attribute *attr, char *buf)
161 {
162 	struct Scsi_Host *shost = class_to_shost(cdev);
163 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
164 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
165 
166 	if (pm8001_ha->chip_id != chip_8001) {
167 		return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
168 		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 24),
169 		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 16),
170 		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 8),
171 		(u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version));
172 	}
173 	return 0;
174 }
175 static
176 DEVICE_ATTR(inc_fw_ver, 0444, pm8001_ctl_inactive_fw_version_show, NULL);
177 
178 /**
179  * pm8001_ctl_max_out_io_show - max outstanding io supported
180  * @cdev: pointer to embedded class device
181  * @attr: device attribute (unused)
182  * @buf: the buffer returned
183  *
184  * A sysfs 'read-only' shost attribute.
185  */
186 static ssize_t pm8001_ctl_max_out_io_show(struct device *cdev,
187 	struct device_attribute *attr, char *buf)
188 {
189 	struct Scsi_Host *shost = class_to_shost(cdev);
190 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
191 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
192 
193 	if (pm8001_ha->chip_id == chip_8001) {
194 		return snprintf(buf, PAGE_SIZE, "%d\n",
195 			pm8001_ha->main_cfg_tbl.pm8001_tbl.max_out_io);
196 	} else {
197 		return snprintf(buf, PAGE_SIZE, "%d\n",
198 			pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_out_io);
199 	}
200 }
201 static DEVICE_ATTR(max_out_io, S_IRUGO, pm8001_ctl_max_out_io_show, NULL);
202 /**
203  * pm8001_ctl_max_devices_show - max devices support
204  * @cdev: pointer to embedded class device
205  * @attr: device attribute (unused)
206  * @buf: the buffer returned
207  *
208  * A sysfs 'read-only' shost attribute.
209  */
210 static ssize_t pm8001_ctl_max_devices_show(struct device *cdev,
211 	struct device_attribute *attr, char *buf)
212 {
213 	struct Scsi_Host *shost = class_to_shost(cdev);
214 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
215 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
216 
217 	if (pm8001_ha->chip_id == chip_8001) {
218 		return snprintf(buf, PAGE_SIZE, "%04d\n",
219 			(u16)(pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl >> 16)
220 			);
221 	} else {
222 		return snprintf(buf, PAGE_SIZE, "%04d\n",
223 			(u16)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl >> 16)
224 			);
225 	}
226 }
227 static DEVICE_ATTR(max_devices, S_IRUGO, pm8001_ctl_max_devices_show, NULL);
228 /**
229  * pm8001_ctl_max_sg_list_show - max sg list supported iff not 0.0 for no
230  * hardware limitation
231  * @cdev: pointer to embedded class device
232  * @attr: device attribute (unused)
233  * @buf: the buffer returned
234  *
235  * A sysfs 'read-only' shost attribute.
236  */
237 static ssize_t pm8001_ctl_max_sg_list_show(struct device *cdev,
238 	struct device_attribute *attr, char *buf)
239 {
240 	struct Scsi_Host *shost = class_to_shost(cdev);
241 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
242 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
243 
244 	if (pm8001_ha->chip_id == chip_8001) {
245 		return snprintf(buf, PAGE_SIZE, "%04d\n",
246 			pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl & 0x0000FFFF
247 			);
248 	} else {
249 		return snprintf(buf, PAGE_SIZE, "%04d\n",
250 			pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl & 0x0000FFFF
251 			);
252 	}
253 }
254 static DEVICE_ATTR(max_sg_list, S_IRUGO, pm8001_ctl_max_sg_list_show, NULL);
255 
256 #define SAS_1_0 0x1
257 #define SAS_1_1 0x2
258 #define SAS_2_0 0x4
259 
260 static ssize_t
261 show_sas_spec_support_status(unsigned int mode, char *buf)
262 {
263 	ssize_t len = 0;
264 
265 	if (mode & SAS_1_1)
266 		len = sprintf(buf, "%s", "SAS1.1");
267 	if (mode & SAS_2_0)
268 		len += sprintf(buf + len, "%s%s", len ? ", " : "", "SAS2.0");
269 	len += sprintf(buf + len, "\n");
270 
271 	return len;
272 }
273 
274 /**
275  * pm8001_ctl_sas_spec_support_show - sas spec supported
276  * @cdev: pointer to embedded class device
277  * @attr: device attribute (unused)
278  * @buf: the buffer returned
279  *
280  * A sysfs 'read-only' shost attribute.
281  */
282 static ssize_t pm8001_ctl_sas_spec_support_show(struct device *cdev,
283 	struct device_attribute *attr, char *buf)
284 {
285 	unsigned int mode;
286 	struct Scsi_Host *shost = class_to_shost(cdev);
287 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
288 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
289 	/* fe000000 means supports SAS2.1 */
290 	if (pm8001_ha->chip_id == chip_8001)
291 		mode = (pm8001_ha->main_cfg_tbl.pm8001_tbl.ctrl_cap_flag &
292 							0xfe000000)>>25;
293 	else
294 		/* fe000000 means supports SAS2.1 */
295 		mode = (pm8001_ha->main_cfg_tbl.pm80xx_tbl.ctrl_cap_flag &
296 							0xfe000000)>>25;
297 	return show_sas_spec_support_status(mode, buf);
298 }
299 static DEVICE_ATTR(sas_spec_support, S_IRUGO,
300 		   pm8001_ctl_sas_spec_support_show, NULL);
301 
302 /**
303  * pm8001_ctl_host_sas_address_show - sas address
304  * @cdev: pointer to embedded class device
305  * @attr: device attribute (unused)
306  * @buf: the buffer returned
307  *
308  * This is the controller sas address
309  *
310  * A sysfs 'read-only' shost attribute.
311  */
312 static ssize_t pm8001_ctl_host_sas_address_show(struct device *cdev,
313 	struct device_attribute *attr, char *buf)
314 {
315 	struct Scsi_Host *shost = class_to_shost(cdev);
316 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
317 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
318 	return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
319 			be64_to_cpu(*(__be64 *)pm8001_ha->sas_addr));
320 }
321 static DEVICE_ATTR(host_sas_address, S_IRUGO,
322 		   pm8001_ctl_host_sas_address_show, NULL);
323 
324 /**
325  * pm8001_ctl_logging_level_show - logging level
326  * @cdev: pointer to embedded class device
327  * @attr: device attribute (unused)
328  * @buf: the buffer returned
329  *
330  * A sysfs 'read/write' shost attribute.
331  */
332 static ssize_t pm8001_ctl_logging_level_show(struct device *cdev,
333 	struct device_attribute *attr, char *buf)
334 {
335 	struct Scsi_Host *shost = class_to_shost(cdev);
336 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
337 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
338 
339 	return snprintf(buf, PAGE_SIZE, "%08xh\n", pm8001_ha->logging_level);
340 }
341 
342 static ssize_t pm8001_ctl_logging_level_store(struct device *cdev,
343 	struct device_attribute *attr, const char *buf, size_t count)
344 {
345 	struct Scsi_Host *shost = class_to_shost(cdev);
346 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
347 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
348 	int val = 0;
349 
350 	if (sscanf(buf, "%x", &val) != 1)
351 		return -EINVAL;
352 
353 	pm8001_ha->logging_level = val;
354 	return strlen(buf);
355 }
356 
357 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
358 	pm8001_ctl_logging_level_show, pm8001_ctl_logging_level_store);
359 /**
360  * pm8001_ctl_aap_log_show - aap1 event log
361  * @cdev: pointer to embedded class device
362  * @attr: device attribute (unused)
363  * @buf: the buffer returned
364  *
365  * A sysfs 'read-only' shost attribute.
366  */
367 static ssize_t pm8001_ctl_aap_log_show(struct device *cdev,
368 	struct device_attribute *attr, char *buf)
369 {
370 	struct Scsi_Host *shost = class_to_shost(cdev);
371 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
372 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
373 	u8 *ptr = (u8 *)pm8001_ha->memoryMap.region[AAP1].virt_ptr;
374 	int i;
375 
376 	char *str = buf;
377 	int max = 2;
378 	for (i = 0; i < max; i++) {
379 		str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
380 			       "0x%08x 0x%08x\n",
381 			       pm8001_ctl_aap1_memmap(ptr, i, 0),
382 			       pm8001_ctl_aap1_memmap(ptr, i, 4),
383 			       pm8001_ctl_aap1_memmap(ptr, i, 8),
384 			       pm8001_ctl_aap1_memmap(ptr, i, 12),
385 			       pm8001_ctl_aap1_memmap(ptr, i, 16),
386 			       pm8001_ctl_aap1_memmap(ptr, i, 20),
387 			       pm8001_ctl_aap1_memmap(ptr, i, 24),
388 			       pm8001_ctl_aap1_memmap(ptr, i, 28));
389 	}
390 
391 	return str - buf;
392 }
393 static DEVICE_ATTR(aap_log, S_IRUGO, pm8001_ctl_aap_log_show, NULL);
394 /**
395  * pm8001_ctl_ib_queue_log_show - Out bound Queue log
396  * @cdev:pointer to embedded class device
397  * @attr: device attribute (unused)
398  * @buf: the buffer returned
399  *
400  * A sysfs 'read-only' shost attribute.
401  */
402 static ssize_t pm8001_ctl_ib_queue_log_show(struct device *cdev,
403 	struct device_attribute *attr, char *buf)
404 {
405 	struct Scsi_Host *shost = class_to_shost(cdev);
406 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
407 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
408 	int offset;
409 	char *str = buf;
410 	int start = 0;
411 	u32 ib_offset = pm8001_ha->ib_offset;
412 	u32 queue_size = pm8001_ha->max_q_num * PM8001_MPI_QUEUE * 128;
413 #define IB_MEMMAP(c)	\
414 		(*(u32 *)((u8 *)pm8001_ha->	\
415 		memoryMap.region[ib_offset].virt_ptr +	\
416 		pm8001_ha->evtlog_ib_offset + (c)))
417 
418 	for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
419 		str += sprintf(str, "0x%08x\n", IB_MEMMAP(start));
420 		start = start + 4;
421 	}
422 	pm8001_ha->evtlog_ib_offset += SYSFS_OFFSET;
423 	if (((pm8001_ha->evtlog_ib_offset) % queue_size) == 0)
424 		pm8001_ha->evtlog_ib_offset = 0;
425 
426 	return str - buf;
427 }
428 
429 static DEVICE_ATTR(ib_log, S_IRUGO, pm8001_ctl_ib_queue_log_show, NULL);
430 /**
431  * pm8001_ctl_ob_queue_log_show - Out bound Queue log
432  * @cdev:pointer to embedded class device
433  * @attr: device attribute (unused)
434  * @buf: the buffer returned
435  *
436  * A sysfs 'read-only' shost attribute.
437  */
438 
439 static ssize_t pm8001_ctl_ob_queue_log_show(struct device *cdev,
440 	struct device_attribute *attr, char *buf)
441 {
442 	struct Scsi_Host *shost = class_to_shost(cdev);
443 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
444 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
445 	int offset;
446 	char *str = buf;
447 	int start = 0;
448 	u32 ob_offset = pm8001_ha->ob_offset;
449 	u32 queue_size = pm8001_ha->max_q_num * PM8001_MPI_QUEUE * 128;
450 #define OB_MEMMAP(c)	\
451 		(*(u32 *)((u8 *)pm8001_ha->	\
452 		memoryMap.region[ob_offset].virt_ptr +	\
453 		pm8001_ha->evtlog_ob_offset + (c)))
454 
455 	for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
456 		str += sprintf(str, "0x%08x\n", OB_MEMMAP(start));
457 		start = start + 4;
458 	}
459 	pm8001_ha->evtlog_ob_offset += SYSFS_OFFSET;
460 	if (((pm8001_ha->evtlog_ob_offset) % queue_size) == 0)
461 		pm8001_ha->evtlog_ob_offset = 0;
462 
463 	return str - buf;
464 }
465 static DEVICE_ATTR(ob_log, S_IRUGO, pm8001_ctl_ob_queue_log_show, NULL);
466 /**
467  * pm8001_ctl_bios_version_show - Bios version Display
468  * @cdev:pointer to embedded class device
469  * @attr: device attribute (unused)
470  * @buf:the buffer returned
471  *
472  * A sysfs 'read-only' shost attribute.
473  */
474 static ssize_t pm8001_ctl_bios_version_show(struct device *cdev,
475 	struct device_attribute *attr, char *buf)
476 {
477 	struct Scsi_Host *shost = class_to_shost(cdev);
478 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
479 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
480 	char *str = buf;
481 	int bios_index;
482 	DECLARE_COMPLETION_ONSTACK(completion);
483 	struct pm8001_ioctl_payload payload;
484 
485 	pm8001_ha->nvmd_completion = &completion;
486 	payload.minor_function = 7;
487 	payload.offset = 0;
488 	payload.rd_length = 4096;
489 	payload.func_specific = kzalloc(4096, GFP_KERNEL);
490 	if (!payload.func_specific)
491 		return -ENOMEM;
492 	if (PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload)) {
493 		kfree(payload.func_specific);
494 		return -ENOMEM;
495 	}
496 	wait_for_completion(&completion);
497 	for (bios_index = BIOSOFFSET; bios_index < BIOS_OFFSET_LIMIT;
498 		bios_index++)
499 		str += sprintf(str, "%c",
500 			*(payload.func_specific+bios_index));
501 	kfree(payload.func_specific);
502 	return str - buf;
503 }
504 static DEVICE_ATTR(bios_version, S_IRUGO, pm8001_ctl_bios_version_show, NULL);
505 /**
506  * event_log_size_show - event log size
507  * @cdev: pointer to embedded class device
508  * @attr: device attribute (unused)
509  * @buf: the buffer returned
510  *
511  * A sysfs read  shost attribute.
512  */
513 static ssize_t event_log_size_show(struct device *cdev,
514 	struct device_attribute *attr, char *buf)
515 {
516 	struct Scsi_Host *shost = class_to_shost(cdev);
517 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
518 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
519 
520 	return snprintf(buf, PAGE_SIZE, "%d\n",
521 		pm8001_ha->main_cfg_tbl.pm80xx_tbl.event_log_size);
522 }
523 static DEVICE_ATTR_RO(event_log_size);
524 /**
525  * pm8001_ctl_iop_log_show - IOP event log
526  * @cdev: pointer to embedded class device
527  * @attr: device attribute (unused)
528  * @buf: the buffer returned
529  *
530  * A sysfs 'read-only' shost attribute.
531  */
532 static ssize_t pm8001_ctl_iop_log_show(struct device *cdev,
533 	struct device_attribute *attr, char *buf)
534 {
535 	struct Scsi_Host *shost = class_to_shost(cdev);
536 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
537 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
538 	char *str = buf;
539 	u32 read_size =
540 		pm8001_ha->main_cfg_tbl.pm80xx_tbl.event_log_size / 1024;
541 	static u32 start, end, count;
542 	u32 max_read_times = 32;
543 	u32 max_count = (read_size * 1024) / (max_read_times * 4);
544 	u32 *temp = (u32 *)pm8001_ha->memoryMap.region[IOP].virt_ptr;
545 
546 	if ((count % max_count) == 0) {
547 		start = 0;
548 		end = max_read_times;
549 		count = 0;
550 	} else {
551 		start = end;
552 		end = end + max_read_times;
553 	}
554 
555 	for (; start < end; start++)
556 		str += sprintf(str, "%08x ", *(temp+start));
557 	count++;
558 	return str - buf;
559 }
560 static DEVICE_ATTR(iop_log, S_IRUGO, pm8001_ctl_iop_log_show, NULL);
561 
562 /**
563  * pm8001_ctl_fatal_log_show - fatal error logging
564  * @cdev:pointer to embedded class device
565  * @attr: device attribute
566  * @buf: the buffer returned
567  *
568  * A sysfs 'read-only' shost attribute.
569  */
570 
571 static ssize_t pm8001_ctl_fatal_log_show(struct device *cdev,
572 	struct device_attribute *attr, char *buf)
573 {
574 	ssize_t count;
575 
576 	count = pm80xx_get_fatal_dump(cdev, attr, buf);
577 	return count;
578 }
579 
580 static DEVICE_ATTR(fatal_log, S_IRUGO, pm8001_ctl_fatal_log_show, NULL);
581 
582 /**
583  * non_fatal_log_show - non fatal error logging
584  * @cdev:pointer to embedded class device
585  * @attr: device attribute
586  * @buf: the buffer returned
587  *
588  * A sysfs 'read-only' shost attribute.
589  */
590 static ssize_t non_fatal_log_show(struct device *cdev,
591 	struct device_attribute *attr, char *buf)
592 {
593 	u32 count;
594 
595 	count = pm80xx_get_non_fatal_dump(cdev, attr, buf);
596 	return count;
597 }
598 static DEVICE_ATTR_RO(non_fatal_log);
599 
600 static ssize_t non_fatal_count_show(struct device *cdev,
601 		struct device_attribute *attr, char *buf)
602 {
603 	struct Scsi_Host *shost = class_to_shost(cdev);
604 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
605 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
606 
607 	return snprintf(buf, PAGE_SIZE, "%08x",
608 			pm8001_ha->non_fatal_count);
609 }
610 
611 static ssize_t non_fatal_count_store(struct device *cdev,
612 		struct device_attribute *attr, const char *buf, size_t count)
613 {
614 	struct Scsi_Host *shost = class_to_shost(cdev);
615 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
616 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
617 	int val = 0;
618 
619 	if (kstrtoint(buf, 16, &val) != 0)
620 		return -EINVAL;
621 
622 	pm8001_ha->non_fatal_count = val;
623 	return strlen(buf);
624 }
625 static DEVICE_ATTR_RW(non_fatal_count);
626 
627 /**
628  * pm8001_ctl_gsm_log_show - gsm dump collection
629  * @cdev:pointer to embedded class device
630  * @attr: device attribute (unused)
631  * @buf: the buffer returned
632  *
633  * A sysfs 'read-only' shost attribute.
634  */
635 static ssize_t pm8001_ctl_gsm_log_show(struct device *cdev,
636 	struct device_attribute *attr, char *buf)
637 {
638 	ssize_t count;
639 
640 	count = pm8001_get_gsm_dump(cdev, SYSFS_OFFSET, buf);
641 	return count;
642 }
643 
644 static DEVICE_ATTR(gsm_log, S_IRUGO, pm8001_ctl_gsm_log_show, NULL);
645 
646 #define FLASH_CMD_NONE      0x00
647 #define FLASH_CMD_UPDATE    0x01
648 #define FLASH_CMD_SET_NVMD    0x02
649 
650 struct flash_command {
651      u8      command[8];
652      int     code;
653 };
654 
655 static const struct flash_command flash_command_table[] = {
656      {"set_nvmd",    FLASH_CMD_SET_NVMD},
657      {"update",      FLASH_CMD_UPDATE},
658      {"",            FLASH_CMD_NONE} /* Last entry should be NULL. */
659 };
660 
661 struct error_fw {
662      char    *reason;
663      int     err_code;
664 };
665 
666 static const struct error_fw flash_error_table[] = {
667      {"Failed to open fw image file",	FAIL_OPEN_BIOS_FILE},
668      {"image header mismatch",		FLASH_UPDATE_HDR_ERR},
669      {"image offset mismatch",		FLASH_UPDATE_OFFSET_ERR},
670      {"image CRC Error",		FLASH_UPDATE_CRC_ERR},
671      {"image length Error.",		FLASH_UPDATE_LENGTH_ERR},
672      {"Failed to program flash chip",	FLASH_UPDATE_HW_ERR},
673      {"Flash chip not supported.",	FLASH_UPDATE_DNLD_NOT_SUPPORTED},
674      {"Flash update disabled.",		FLASH_UPDATE_DISABLED},
675      {"Flash in progress",		FLASH_IN_PROGRESS},
676      {"Image file size Error",		FAIL_FILE_SIZE},
677      {"Input parameter error",		FAIL_PARAMETERS},
678      {"Out of memory",			FAIL_OUT_MEMORY},
679      {"OK", 0}	/* Last entry err_code = 0. */
680 };
681 
682 static int pm8001_set_nvmd(struct pm8001_hba_info *pm8001_ha)
683 {
684 	struct pm8001_ioctl_payload	*payload;
685 	DECLARE_COMPLETION_ONSTACK(completion);
686 	u8		*ioctlbuffer;
687 	u32		ret;
688 	u32		length = 1024 * 5 + sizeof(*payload) - 1;
689 
690 	if (pm8001_ha->fw_image->size > 4096) {
691 		pm8001_ha->fw_status = FAIL_FILE_SIZE;
692 		return -EFAULT;
693 	}
694 
695 	ioctlbuffer = kzalloc(length, GFP_KERNEL);
696 	if (!ioctlbuffer) {
697 		pm8001_ha->fw_status = FAIL_OUT_MEMORY;
698 		return -ENOMEM;
699 	}
700 	payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
701 	memcpy((u8 *)&payload->func_specific, (u8 *)pm8001_ha->fw_image->data,
702 				pm8001_ha->fw_image->size);
703 	payload->wr_length = pm8001_ha->fw_image->size;
704 	payload->id = 0;
705 	payload->minor_function = 0x1;
706 	pm8001_ha->nvmd_completion = &completion;
707 	ret = PM8001_CHIP_DISP->set_nvmd_req(pm8001_ha, payload);
708 	if (ret) {
709 		pm8001_ha->fw_status = FAIL_OUT_MEMORY;
710 		goto out;
711 	}
712 	wait_for_completion(&completion);
713 out:
714 	kfree(ioctlbuffer);
715 	return ret;
716 }
717 
718 static int pm8001_update_flash(struct pm8001_hba_info *pm8001_ha)
719 {
720 	struct pm8001_ioctl_payload	*payload;
721 	DECLARE_COMPLETION_ONSTACK(completion);
722 	u8		*ioctlbuffer;
723 	struct fw_control_info	*fwControl;
724 	__be32		partitionSizeTmp;
725 	u32		partitionSize;
726 	u32		loopNumber, loopcount;
727 	struct pm8001_fw_image_header *image_hdr;
728 	u32		sizeRead = 0;
729 	u32		ret = 0;
730 	u32		length = 1024 * 16 + sizeof(*payload) - 1;
731 	u32		fc_len;
732 	u8		*read_buf;
733 
734 	if (pm8001_ha->fw_image->size < 28) {
735 		pm8001_ha->fw_status = FAIL_FILE_SIZE;
736 		return -EFAULT;
737 	}
738 	ioctlbuffer = kzalloc(length, GFP_KERNEL);
739 	if (!ioctlbuffer) {
740 		pm8001_ha->fw_status = FAIL_OUT_MEMORY;
741 		return -ENOMEM;
742 	}
743 	image_hdr = (struct pm8001_fw_image_header *)pm8001_ha->fw_image->data;
744 	while (sizeRead < pm8001_ha->fw_image->size) {
745 		partitionSizeTmp =
746 			*(__be32 *)((u8 *)&image_hdr->image_length + sizeRead);
747 		partitionSize = be32_to_cpu(partitionSizeTmp);
748 		loopcount = DIV_ROUND_UP(partitionSize + HEADER_LEN,
749 					IOCTL_BUF_SIZE);
750 		for (loopNumber = 0; loopNumber < loopcount; loopNumber++) {
751 			payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
752 			payload->wr_length = 1024*16;
753 			payload->id = 0;
754 			fwControl =
755 			      (struct fw_control_info *)&payload->func_specific;
756 			fwControl->len = IOCTL_BUF_SIZE;   /* IN */
757 			fwControl->size = partitionSize + HEADER_LEN;/* IN */
758 			fwControl->retcode = 0;/* OUT */
759 			fwControl->offset = loopNumber * IOCTL_BUF_SIZE;/*OUT */
760 
761 			/*
762 			 * for the last chunk of data in case file size is
763 			 * not even with 4k, load only the rest
764 			 */
765 
766 			read_buf  = (u8 *)pm8001_ha->fw_image->data + sizeRead;
767 			fc_len = (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
768 
769 			if (loopcount - loopNumber == 1 && fc_len) {
770 				fwControl->len = fc_len;
771 				memcpy((u8 *)fwControl->buffer, read_buf, fc_len);
772 				sizeRead += fc_len;
773 			} else {
774 				memcpy((u8 *)fwControl->buffer, read_buf, IOCTL_BUF_SIZE);
775 				sizeRead += IOCTL_BUF_SIZE;
776 			}
777 
778 			pm8001_ha->nvmd_completion = &completion;
779 			ret = PM8001_CHIP_DISP->fw_flash_update_req(pm8001_ha, payload);
780 			if (ret) {
781 				pm8001_ha->fw_status = FAIL_OUT_MEMORY;
782 				goto out;
783 			}
784 			wait_for_completion(&completion);
785 			if (fwControl->retcode > FLASH_UPDATE_IN_PROGRESS) {
786 				pm8001_ha->fw_status = fwControl->retcode;
787 				ret = -EFAULT;
788 				goto out;
789 			}
790 		}
791 	}
792 out:
793 	kfree(ioctlbuffer);
794 	return ret;
795 }
796 static ssize_t pm8001_store_update_fw(struct device *cdev,
797 				      struct device_attribute *attr,
798 				      const char *buf, size_t count)
799 {
800 	struct Scsi_Host *shost = class_to_shost(cdev);
801 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
802 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
803 	char *cmd_ptr, *filename_ptr;
804 	int res, i;
805 	int flash_command = FLASH_CMD_NONE;
806 	int ret;
807 
808 	if (!capable(CAP_SYS_ADMIN))
809 		return -EACCES;
810 
811 	/* this test protects us from running two flash processes at once,
812 	 * so we should start with this test */
813 	if (pm8001_ha->fw_status == FLASH_IN_PROGRESS)
814 		return -EINPROGRESS;
815 	pm8001_ha->fw_status = FLASH_IN_PROGRESS;
816 
817 	cmd_ptr = kcalloc(count, 2, GFP_KERNEL);
818 	if (!cmd_ptr) {
819 		pm8001_ha->fw_status = FAIL_OUT_MEMORY;
820 		return -ENOMEM;
821 	}
822 
823 	filename_ptr = cmd_ptr + count;
824 	res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
825 	if (res != 2) {
826 		pm8001_ha->fw_status = FAIL_PARAMETERS;
827 		ret = -EINVAL;
828 		goto out;
829 	}
830 
831 	for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
832 		if (!memcmp(flash_command_table[i].command,
833 				 cmd_ptr, strlen(cmd_ptr))) {
834 			flash_command = flash_command_table[i].code;
835 			break;
836 		}
837 	}
838 	if (flash_command == FLASH_CMD_NONE) {
839 		pm8001_ha->fw_status = FAIL_PARAMETERS;
840 		ret = -EINVAL;
841 		goto out;
842 	}
843 
844 	ret = request_firmware(&pm8001_ha->fw_image,
845 			       filename_ptr,
846 			       pm8001_ha->dev);
847 
848 	if (ret) {
849 		pm8001_dbg(pm8001_ha, FAIL,
850 			   "Failed to load firmware image file %s, error %d\n",
851 			   filename_ptr, ret);
852 		pm8001_ha->fw_status = FAIL_OPEN_BIOS_FILE;
853 		goto out;
854 	}
855 
856 	if (FLASH_CMD_UPDATE == flash_command)
857 		ret = pm8001_update_flash(pm8001_ha);
858 	else
859 		ret = pm8001_set_nvmd(pm8001_ha);
860 
861 	release_firmware(pm8001_ha->fw_image);
862 out:
863 	kfree(cmd_ptr);
864 
865 	if (ret)
866 		return ret;
867 
868 	pm8001_ha->fw_status = FLASH_OK;
869 	return count;
870 }
871 
872 static ssize_t pm8001_show_update_fw(struct device *cdev,
873 				     struct device_attribute *attr, char *buf)
874 {
875 	int i;
876 	struct Scsi_Host *shost = class_to_shost(cdev);
877 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
878 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
879 
880 	for (i = 0; flash_error_table[i].err_code != 0; i++) {
881 		if (flash_error_table[i].err_code == pm8001_ha->fw_status)
882 			break;
883 	}
884 	if (pm8001_ha->fw_status != FLASH_IN_PROGRESS)
885 		pm8001_ha->fw_status = FLASH_OK;
886 
887 	return snprintf(buf, PAGE_SIZE, "status=%x %s\n",
888 			flash_error_table[i].err_code,
889 			flash_error_table[i].reason);
890 }
891 static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUSR|S_IWGRP,
892 	pm8001_show_update_fw, pm8001_store_update_fw);
893 
894 static const char *const mpiStateText[] = {
895 	"MPI is not initialized",
896 	"MPI is successfully initialized",
897 	"MPI termination is in progress",
898 	"MPI initialization failed with error in [31:16]"
899 };
900 
901 /**
902  * ctl_mpi_state_show - controller MPI state check
903  * @cdev: pointer to embedded class device
904  * @attr: device attribute (unused)
905  * @buf: the buffer returned
906  *
907  * A sysfs 'read-only' shost attribute.
908  */
909 static ssize_t ctl_mpi_state_show(struct device *cdev,
910 		struct device_attribute *attr, char *buf)
911 {
912 	struct Scsi_Host *shost = class_to_shost(cdev);
913 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
914 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
915 	unsigned int mpidw0;
916 
917 	mpidw0 = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 0);
918 	return sysfs_emit(buf, "%s\n", mpiStateText[mpidw0 & 0x0003]);
919 }
920 static DEVICE_ATTR_RO(ctl_mpi_state);
921 
922 /**
923  * ctl_hmi_error_show - controller MPI initialization fails
924  * @cdev: pointer to embedded class device
925  * @attr: device attribute (unused)
926  * @buf: the buffer returned
927  *
928  * A sysfs 'read-only' shost attribute.
929  */
930 static ssize_t ctl_hmi_error_show(struct device *cdev,
931 		struct device_attribute *attr, char *buf)
932 {
933 	struct Scsi_Host *shost = class_to_shost(cdev);
934 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
935 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
936 	unsigned int mpidw0;
937 
938 	mpidw0 = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 0);
939 	return sysfs_emit(buf, "0x%08x\n", (mpidw0 >> 16));
940 }
941 static DEVICE_ATTR_RO(ctl_hmi_error);
942 
943 /**
944  * ctl_raae_count_show - controller raae count check
945  * @cdev: pointer to embedded class device
946  * @attr: device attribute (unused)
947  * @buf: the buffer returned
948  *
949  * A sysfs 'read-only' shost attribute.
950  */
951 static ssize_t ctl_raae_count_show(struct device *cdev,
952 		struct device_attribute *attr, char *buf)
953 {
954 	struct Scsi_Host *shost = class_to_shost(cdev);
955 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
956 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
957 	unsigned int raaecnt;
958 
959 	raaecnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 12);
960 	return sysfs_emit(buf, "0x%08x\n", raaecnt);
961 }
962 static DEVICE_ATTR_RO(ctl_raae_count);
963 
964 /**
965  * ctl_iop0_count_show - controller iop0 count check
966  * @cdev: pointer to embedded class device
967  * @attr: device attribute (unused)
968  * @buf: the buffer returned
969  *
970  * A sysfs 'read-only' shost attribute.
971  */
972 static ssize_t ctl_iop0_count_show(struct device *cdev,
973 		struct device_attribute *attr, char *buf)
974 {
975 	struct Scsi_Host *shost = class_to_shost(cdev);
976 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
977 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
978 	unsigned int iop0cnt;
979 
980 	iop0cnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 16);
981 	return sysfs_emit(buf, "0x%08x\n", iop0cnt);
982 }
983 static DEVICE_ATTR_RO(ctl_iop0_count);
984 
985 /**
986  * ctl_iop1_count_show - controller iop1 count check
987  * @cdev: pointer to embedded class device
988  * @attr: device attribute (unused)
989  * @buf: the buffer returned
990  *
991  * A sysfs 'read-only' shost attribute.
992  */
993 static ssize_t ctl_iop1_count_show(struct device *cdev,
994 		struct device_attribute *attr, char *buf)
995 {
996 	struct Scsi_Host *shost = class_to_shost(cdev);
997 	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
998 	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
999 	unsigned int iop1cnt;
1000 
1001 	iop1cnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 20);
1002 	return sysfs_emit(buf, "0x%08x\n", iop1cnt);
1003 
1004 }
1005 static DEVICE_ATTR_RO(ctl_iop1_count);
1006 
1007 static struct attribute *pm8001_host_attrs[] = {
1008 	&dev_attr_interface_rev.attr,
1009 	&dev_attr_controller_fatal_error.attr,
1010 	&dev_attr_fw_version.attr,
1011 	&dev_attr_update_fw.attr,
1012 	&dev_attr_aap_log.attr,
1013 	&dev_attr_iop_log.attr,
1014 	&dev_attr_fatal_log.attr,
1015 	&dev_attr_non_fatal_log.attr,
1016 	&dev_attr_non_fatal_count.attr,
1017 	&dev_attr_gsm_log.attr,
1018 	&dev_attr_max_out_io.attr,
1019 	&dev_attr_max_devices.attr,
1020 	&dev_attr_max_sg_list.attr,
1021 	&dev_attr_sas_spec_support.attr,
1022 	&dev_attr_logging_level.attr,
1023 	&dev_attr_event_log_size.attr,
1024 	&dev_attr_host_sas_address.attr,
1025 	&dev_attr_bios_version.attr,
1026 	&dev_attr_ib_log.attr,
1027 	&dev_attr_ob_log.attr,
1028 	&dev_attr_ila_version.attr,
1029 	&dev_attr_inc_fw_ver.attr,
1030 	&dev_attr_ctl_mpi_state.attr,
1031 	&dev_attr_ctl_hmi_error.attr,
1032 	&dev_attr_ctl_raae_count.attr,
1033 	&dev_attr_ctl_iop0_count.attr,
1034 	&dev_attr_ctl_iop1_count.attr,
1035 	NULL,
1036 };
1037 
1038 static const struct attribute_group pm8001_host_attr_group = {
1039 	.attrs = pm8001_host_attrs
1040 };
1041 
1042 const struct attribute_group *pm8001_host_groups[] = {
1043 	&pm8001_host_attr_group,
1044 	NULL
1045 };
1046