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pm8001_ctl.c
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1 /*
2  * PMC-Sierra SPC 8001 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 
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  return snprintf(buf, PAGE_SIZE, "%d\n",
62  pm8001_ha->main_cfg_tbl.interface_rev);
63 }
64 static
65 DEVICE_ATTR(interface_rev, S_IRUGO, pm8001_ctl_mpi_interface_rev_show, NULL);
66 
74 static ssize_t pm8001_ctl_fw_version_show(struct device *cdev,
75  struct device_attribute *attr, char *buf)
76 {
77  struct Scsi_Host *shost = class_to_shost(cdev);
78  struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
79  struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
80 
81  return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
82  (u8)(pm8001_ha->main_cfg_tbl.firmware_rev >> 24),
83  (u8)(pm8001_ha->main_cfg_tbl.firmware_rev >> 16),
84  (u8)(pm8001_ha->main_cfg_tbl.firmware_rev >> 8),
85  (u8)(pm8001_ha->main_cfg_tbl.firmware_rev));
86 }
87 static DEVICE_ATTR(fw_version, S_IRUGO, pm8001_ctl_fw_version_show, NULL);
95 static ssize_t pm8001_ctl_max_out_io_show(struct device *cdev,
96  struct device_attribute *attr, char *buf)
97 {
98  struct Scsi_Host *shost = class_to_shost(cdev);
99  struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
100  struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
101 
102  return snprintf(buf, PAGE_SIZE, "%d\n",
103  pm8001_ha->main_cfg_tbl.max_out_io);
104 }
105 static DEVICE_ATTR(max_out_io, S_IRUGO, pm8001_ctl_max_out_io_show, NULL);
113 static ssize_t pm8001_ctl_max_devices_show(struct device *cdev,
114  struct device_attribute *attr, char *buf)
115 {
116  struct Scsi_Host *shost = class_to_shost(cdev);
117  struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
118  struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
119 
120  return snprintf(buf, PAGE_SIZE, "%04d\n",
121  (u16)(pm8001_ha->main_cfg_tbl.max_sgl >> 16));
122 }
123 static DEVICE_ATTR(max_devices, S_IRUGO, pm8001_ctl_max_devices_show, NULL);
132 static ssize_t pm8001_ctl_max_sg_list_show(struct device *cdev,
133  struct device_attribute *attr, char *buf)
134 {
135  struct Scsi_Host *shost = class_to_shost(cdev);
136  struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
137  struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
138 
139  return snprintf(buf, PAGE_SIZE, "%04d\n",
140  pm8001_ha->main_cfg_tbl.max_sgl & 0x0000FFFF);
141 }
142 static DEVICE_ATTR(max_sg_list, S_IRUGO, pm8001_ctl_max_sg_list_show, NULL);
143 
144 #define SAS_1_0 0x1
145 #define SAS_1_1 0x2
146 #define SAS_2_0 0x4
147 
148 static ssize_t
149 show_sas_spec_support_status(unsigned int mode, char *buf)
150 {
151  ssize_t len = 0;
152 
153  if (mode & SAS_1_1)
154  len = sprintf(buf, "%s", "SAS1.1");
155  if (mode & SAS_2_0)
156  len += sprintf(buf + len, "%s%s", len ? ", " : "", "SAS2.0");
157  len += sprintf(buf + len, "\n");
158 
159  return len;
160 }
161 
169 static ssize_t pm8001_ctl_sas_spec_support_show(struct device *cdev,
170  struct device_attribute *attr, char *buf)
171 {
172  unsigned int mode;
173  struct Scsi_Host *shost = class_to_shost(cdev);
174  struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
175  struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
176  mode = (pm8001_ha->main_cfg_tbl.ctrl_cap_flag & 0xfe000000)>>25;
177  return show_sas_spec_support_status(mode, buf);
178 }
179 static DEVICE_ATTR(sas_spec_support, S_IRUGO,
180  pm8001_ctl_sas_spec_support_show, NULL);
181 
191 static ssize_t pm8001_ctl_host_sas_address_show(struct device *cdev,
192  struct device_attribute *attr, char *buf)
193 {
194  struct Scsi_Host *shost = class_to_shost(cdev);
195  struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
196  struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
197  return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
198  be64_to_cpu(*(__be64 *)pm8001_ha->sas_addr));
199 }
200 static DEVICE_ATTR(host_sas_address, S_IRUGO,
201  pm8001_ctl_host_sas_address_show, NULL);
202 
210 static ssize_t pm8001_ctl_logging_level_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  return snprintf(buf, PAGE_SIZE, "%08xh\n", pm8001_ha->logging_level);
218 }
219 static ssize_t pm8001_ctl_logging_level_store(struct device *cdev,
220  struct device_attribute *attr, const char *buf, size_t count)
221 {
222  struct Scsi_Host *shost = class_to_shost(cdev);
223  struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
224  struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
225  int val = 0;
226 
227  if (sscanf(buf, "%x", &val) != 1)
228  return -EINVAL;
229 
230  pm8001_ha->logging_level = val;
231  return strlen(buf);
232 }
233 
234 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
235  pm8001_ctl_logging_level_show, pm8001_ctl_logging_level_store);
243 static ssize_t pm8001_ctl_aap_log_show(struct device *cdev,
244  struct device_attribute *attr, char *buf)
245 {
246  struct Scsi_Host *shost = class_to_shost(cdev);
247  struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
248  struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
249  int i;
250 #define AAP1_MEMMAP(r, c) \
251  (*(u32 *)((u8*)pm8001_ha->memoryMap.region[AAP1].virt_ptr + (r) * 32 \
252  + (c)))
253 
254  char *str = buf;
255  int max = 2;
256  for (i = 0; i < max; i++) {
257  str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
258  "0x%08x 0x%08x\n",
259  AAP1_MEMMAP(i, 0),
260  AAP1_MEMMAP(i, 4),
261  AAP1_MEMMAP(i, 8),
262  AAP1_MEMMAP(i, 12),
263  AAP1_MEMMAP(i, 16),
264  AAP1_MEMMAP(i, 20),
265  AAP1_MEMMAP(i, 24),
266  AAP1_MEMMAP(i, 28));
267  }
268 
269  return str - buf;
270 }
271 static DEVICE_ATTR(aap_log, S_IRUGO, pm8001_ctl_aap_log_show, NULL);
279 static ssize_t pm8001_ctl_iop_log_show(struct device *cdev,
280  struct device_attribute *attr, char *buf)
281 {
282  struct Scsi_Host *shost = class_to_shost(cdev);
283  struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
284  struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
285 #define IOP_MEMMAP(r, c) \
286  (*(u32 *)((u8*)pm8001_ha->memoryMap.region[IOP].virt_ptr + (r) * 32 \
287  + (c)))
288  int i;
289  char *str = buf;
290  int max = 2;
291  for (i = 0; i < max; i++) {
292  str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
293  "0x%08x 0x%08x\n",
294  IOP_MEMMAP(i, 0),
295  IOP_MEMMAP(i, 4),
296  IOP_MEMMAP(i, 8),
297  IOP_MEMMAP(i, 12),
298  IOP_MEMMAP(i, 16),
299  IOP_MEMMAP(i, 20),
300  IOP_MEMMAP(i, 24),
301  IOP_MEMMAP(i, 28));
302  }
303 
304  return str - buf;
305 }
306 static DEVICE_ATTR(iop_log, S_IRUGO, pm8001_ctl_iop_log_show, NULL);
307 
308 #define FLASH_CMD_NONE 0x00
309 #define FLASH_CMD_UPDATE 0x01
310 #define FLASH_CMD_SET_NVMD 0x02
311 
312 struct flash_command {
313  u8 command[8];
314  int code;
315 };
316 
317 static struct flash_command flash_command_table[] =
318 {
319  {"set_nvmd", FLASH_CMD_SET_NVMD},
320  {"update", FLASH_CMD_UPDATE},
321  {"", FLASH_CMD_NONE} /* Last entry should be NULL. */
322 };
323 
324 struct error_fw {
325  char *reason;
326  int err_code;
327 };
328 
329 static struct error_fw flash_error_table[] =
330 {
331  {"Failed to open fw image file", FAIL_OPEN_BIOS_FILE},
332  {"image header mismatch", FLASH_UPDATE_HDR_ERR},
333  {"image offset mismatch", FLASH_UPDATE_OFFSET_ERR},
334  {"image CRC Error", FLASH_UPDATE_CRC_ERR},
335  {"image length Error.", FLASH_UPDATE_LENGTH_ERR},
336  {"Failed to program flash chip", FLASH_UPDATE_HW_ERR},
337  {"Flash chip not supported.", FLASH_UPDATE_DNLD_NOT_SUPPORTED},
338  {"Flash update disabled.", FLASH_UPDATE_DISABLED},
339  {"Flash in progress", FLASH_IN_PROGRESS},
340  {"Image file size Error", FAIL_FILE_SIZE},
341  {"Input parameter error", FAIL_PARAMETERS},
342  {"Out of memory", FAIL_OUT_MEMORY},
343  {"OK", 0} /* Last entry err_code = 0. */
344 };
345 
346 static int pm8001_set_nvmd(struct pm8001_hba_info *pm8001_ha)
347 {
348  struct pm8001_ioctl_payload *payload;
349  DECLARE_COMPLETION_ONSTACK(completion);
350  u8 *ioctlbuffer = NULL;
351  u32 length = 0;
352  u32 ret = 0;
353 
354  length = 1024 * 5 + sizeof(*payload) - 1;
355  ioctlbuffer = kzalloc(length, GFP_KERNEL);
356  if (!ioctlbuffer)
357  return -ENOMEM;
358  if ((pm8001_ha->fw_image->size <= 0) ||
359  (pm8001_ha->fw_image->size > 4096)) {
360  ret = FAIL_FILE_SIZE;
361  goto out;
362  }
363  payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
364  memcpy((u8 *)payload->func_specific, (u8 *)pm8001_ha->fw_image->data,
365  pm8001_ha->fw_image->size);
366  payload->length = pm8001_ha->fw_image->size;
367  payload->id = 0;
368  pm8001_ha->nvmd_completion = &completion;
369  ret = PM8001_CHIP_DISP->set_nvmd_req(pm8001_ha, payload);
370  wait_for_completion(&completion);
371 out:
372  kfree(ioctlbuffer);
373  return ret;
374 }
375 
376 static int pm8001_update_flash(struct pm8001_hba_info *pm8001_ha)
377 {
378  struct pm8001_ioctl_payload *payload;
379  DECLARE_COMPLETION_ONSTACK(completion);
380  u8 *ioctlbuffer = NULL;
381  u32 length = 0;
382  struct fw_control_info *fwControl;
383  u32 loopNumber, loopcount = 0;
384  u32 sizeRead = 0;
385  u32 partitionSize, partitionSizeTmp;
386  u32 ret = 0;
387  u32 partitionNumber = 0;
388  struct pm8001_fw_image_header *image_hdr;
389 
390  length = 1024 * 16 + sizeof(*payload) - 1;
391  ioctlbuffer = kzalloc(length, GFP_KERNEL);
392  image_hdr = (struct pm8001_fw_image_header *)pm8001_ha->fw_image->data;
393  if (!ioctlbuffer)
394  return -ENOMEM;
395  if (pm8001_ha->fw_image->size < 28) {
396  ret = FAIL_FILE_SIZE;
397  goto out;
398  }
399 
400  while (sizeRead < pm8001_ha->fw_image->size) {
401  partitionSizeTmp =
402  *(u32 *)((u8 *)&image_hdr->image_length + sizeRead);
403  partitionSize = be32_to_cpu(partitionSizeTmp);
404  loopcount = (partitionSize + HEADER_LEN)/IOCTL_BUF_SIZE;
405  if (loopcount % IOCTL_BUF_SIZE)
406  loopcount++;
407  if (loopcount == 0)
408  loopcount++;
409  for (loopNumber = 0; loopNumber < loopcount; loopNumber++) {
410  payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
411  payload->length = 1024*16;
412  payload->id = 0;
413  fwControl =
414  (struct fw_control_info *)payload->func_specific;
415  fwControl->len = IOCTL_BUF_SIZE; /* IN */
416  fwControl->size = partitionSize + HEADER_LEN;/* IN */
417  fwControl->retcode = 0;/* OUT */
418  fwControl->offset = loopNumber * IOCTL_BUF_SIZE;/*OUT */
419 
420  /* for the last chunk of data in case file size is not even with
421  4k, load only the rest*/
422  if (((loopcount-loopNumber) == 1) &&
423  ((partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE)) {
424  fwControl->len =
425  (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
426  memcpy((u8 *)fwControl->buffer,
427  (u8 *)pm8001_ha->fw_image->data + sizeRead,
428  (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE);
429  sizeRead +=
430  (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
431  } else {
432  memcpy((u8 *)fwControl->buffer,
433  (u8 *)pm8001_ha->fw_image->data + sizeRead,
434  IOCTL_BUF_SIZE);
435  sizeRead += IOCTL_BUF_SIZE;
436  }
437 
438  pm8001_ha->nvmd_completion = &completion;
439  ret = PM8001_CHIP_DISP->fw_flash_update_req(pm8001_ha, payload);
440  wait_for_completion(&completion);
441  if (ret || (fwControl->retcode > FLASH_UPDATE_IN_PROGRESS)) {
442  ret = fwControl->retcode;
443  kfree(ioctlbuffer);
444  ioctlbuffer = NULL;
445  break;
446  }
447  }
448  if (ret)
449  break;
450  partitionNumber++;
451 }
452 out:
453  kfree(ioctlbuffer);
454  return ret;
455 }
456 static ssize_t pm8001_store_update_fw(struct device *cdev,
457  struct device_attribute *attr,
458  const char *buf, size_t count)
459 {
460  struct Scsi_Host *shost = class_to_shost(cdev);
461  struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
462  struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
463  char *cmd_ptr, *filename_ptr;
464  int res, i;
465  int flash_command = FLASH_CMD_NONE;
466  int err = 0;
467  if (!capable(CAP_SYS_ADMIN))
468  return -EACCES;
469 
470  cmd_ptr = kzalloc(count*2, GFP_KERNEL);
471 
472  if (!cmd_ptr) {
473  err = FAIL_OUT_MEMORY;
474  goto out;
475  }
476 
477  filename_ptr = cmd_ptr + count;
478  res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
479  if (res != 2) {
480  err = FAIL_PARAMETERS;
481  goto out1;
482  }
483 
484  for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
485  if (!memcmp(flash_command_table[i].command,
486  cmd_ptr, strlen(cmd_ptr))) {
487  flash_command = flash_command_table[i].code;
488  break;
489  }
490  }
491  if (flash_command == FLASH_CMD_NONE) {
492  err = FAIL_PARAMETERS;
493  goto out1;
494  }
495 
496  if (pm8001_ha->fw_status == FLASH_IN_PROGRESS) {
497  err = FLASH_IN_PROGRESS;
498  goto out1;
499  }
500  err = request_firmware(&pm8001_ha->fw_image,
501  filename_ptr,
502  pm8001_ha->dev);
503 
504  if (err) {
505  PM8001_FAIL_DBG(pm8001_ha,
506  pm8001_printk("Failed to load firmware image file %s,"
507  " error %d\n", filename_ptr, err));
508  err = FAIL_OPEN_BIOS_FILE;
509  goto out1;
510  }
511 
512  switch (flash_command) {
513  case FLASH_CMD_UPDATE:
514  pm8001_ha->fw_status = FLASH_IN_PROGRESS;
515  err = pm8001_update_flash(pm8001_ha);
516  break;
517  case FLASH_CMD_SET_NVMD:
518  pm8001_ha->fw_status = FLASH_IN_PROGRESS;
519  err = pm8001_set_nvmd(pm8001_ha);
520  break;
521  default:
522  pm8001_ha->fw_status = FAIL_PARAMETERS;
523  err = FAIL_PARAMETERS;
524  break;
525  }
526  release_firmware(pm8001_ha->fw_image);
527 out1:
528  kfree(cmd_ptr);
529 out:
530  pm8001_ha->fw_status = err;
531 
532  if (!err)
533  return count;
534  else
535  return -err;
536 }
537 
538 static ssize_t pm8001_show_update_fw(struct device *cdev,
539  struct device_attribute *attr, char *buf)
540 {
541  int i;
542  struct Scsi_Host *shost = class_to_shost(cdev);
543  struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
544  struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
545 
546  for (i = 0; flash_error_table[i].err_code != 0; i++) {
547  if (flash_error_table[i].err_code == pm8001_ha->fw_status)
548  break;
549  }
550  if (pm8001_ha->fw_status != FLASH_IN_PROGRESS)
551  pm8001_ha->fw_status = FLASH_OK;
552 
553  return snprintf(buf, PAGE_SIZE, "status=%x %s\n",
554  flash_error_table[i].err_code,
555  flash_error_table[i].reason);
556 }
557 
558 static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUGO,
559  pm8001_show_update_fw, pm8001_store_update_fw);
560 struct device_attribute *pm8001_host_attrs[] = {
561  &dev_attr_interface_rev,
562  &dev_attr_fw_version,
563  &dev_attr_update_fw,
564  &dev_attr_aap_log,
565  &dev_attr_iop_log,
566  &dev_attr_max_out_io,
567  &dev_attr_max_devices,
568  &dev_attr_max_sg_list,
569  &dev_attr_sas_spec_support,
570  &dev_attr_logging_level,
571  &dev_attr_host_sas_address,
572  NULL,
573 };
574 
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