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         switch (iu->datapres) {
  19         case SAS_DATAPRES_NO_DATA:
  20                 tstat->stat = iu->status;
  21                 break;
  22         case SAS_DATAPRES_RESPONSE_DATA:
  23                 tstat->stat = iu->resp_data[3];
  24                 break;
  25         case SAS_DATAPRES_SENSE_DATA:
  26                 tstat->stat = SAS_SAM_STAT_CHECK_CONDITION;
  27                 tstat->buf_valid_size =
  28                         min_t(int, SAS_STATUS_BUF_SIZE,
  29                               be32_to_cpu(iu->sense_data_len));
  30                 memcpy(tstat->buf, iu->sense_data, tstat->buf_valid_size);
  31
  32                 if (iu->status != SAM_STAT_CHECK_CONDITION)
  33                         dev_warn(dev, "dev %016llx sent sense data, but stat(0x%x) is not CHECK CONDITION\n",
  34                                  SAS_ADDR(task->dev->sas_addr), iu->status);
  35                 break;
  36         default:
  37                 /* when datapres contains corrupt/unknown value... */
  38                 tstat->stat = SAS_SAM_STAT_CHECK_CONDITION;
  39         }
  40 }
  41 EXPORT_SYMBOL_GPL(sas_ssp_task_response);
  42