drivers/scsi/libsas/sas_task.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2
   3 #include "sas_internal.h"
   4
   5 #include <linux/kernel.h>
   6 #include <linux/export.h>
   7 #include <scsi/sas.h>
   8 #include <scsi/libsas.h>
   9
  10 /* fill task_status_struct based on SSP response frame */
  11 void sas_ssp_task_response(struct device *dev, struct sas_task *task,
  12                            struct ssp_response_iu *iu)
  13 {
  14         struct task_status_struct *tstat = &task->task_status;
  15
  16         tstat->resp = SAS_TASK_COMPLETE;
  17
  18         if (iu->datapres == 0)
  19                 tstat->stat = iu->status;
  20         else if (iu->datapres == 1)
  21                 tstat->stat = iu->resp_data[3];
  22         else if (iu->datapres == 2) {
  23                 tstat->stat = SAM_STAT_CHECK_CONDITION;
  24                 tstat->buf_valid_size =
  25                         min_t(int, SAS_STATUS_BUF_SIZE,
  26                               be32_to_cpu(iu->sense_data_len));
  27                 memcpy(tstat->buf, iu->sense_data, tstat->buf_valid_size);
  28
  29                 if (iu->status != SAM_STAT_CHECK_CONDITION)
  30                         dev_warn(dev, "dev %016llx sent sense data, but stat(0x%x) is not CHECK CONDITION\n",
  31                                  SAS_ADDR(task->dev->sas_addr), iu->status);
  32         }
  33         else
  34                 /* when datapres contains corrupt/unknown value... */
  35                 tstat->stat = SAM_STAT_CHECK_CONDITION;
  36 }
  37 EXPORT_SYMBOL_GPL(sas_ssp_task_response);
  38