scsi/libsas/sas_task.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002
0003 #include "sas_internal.h"
0004
0005 #include <linux/kernel.h>
0006 #include <linux/export.h>
0007 #include <scsi/sas.h>
0008 #include <scsi/libsas.h>
0009
0010 /* fill task_status_struct based on SSP response frame */
0011 void sas_ssp_task_response(struct device *dev, struct sas_task *task,
0012                struct ssp_response_iu *iu)
0013 {
0014     struct task_status_struct *tstat = &task->task_status;
0015
0016     tstat->resp = SAS_TASK_COMPLETE;
0017
0018     switch (iu->datapres) {
0019     case SAS_DATAPRES_NO_DATA:
0020         tstat->stat = iu->status;
0021         break;
0022     case SAS_DATAPRES_RESPONSE_DATA:
0023         tstat->stat = iu->resp_data[3];
0024         break;
0025     case SAS_DATAPRES_SENSE_DATA:
0026         tstat->stat = SAS_SAM_STAT_CHECK_CONDITION;
0027         tstat->buf_valid_size =
0028             min_t(int, SAS_STATUS_BUF_SIZE,
0029                   be32_to_cpu(iu->sense_data_len));
0030         memcpy(tstat->buf, iu->sense_data, tstat->buf_valid_size);
0031
0032         if (iu->status != SAM_STAT_CHECK_CONDITION)
0033             dev_warn(dev, "dev %016llx sent sense data, but stat(0x%x) is not CHECK CONDITION\n",
0034                  SAS_ADDR(task->dev->sas_addr), iu->status);
0035         break;
0036     default:
0037         /* when datapres contains corrupt/unknown value... */
0038         tstat->stat = SAS_SAM_STAT_CHECK_CONDITION;
0039     }
0040 }
0041 EXPORT_SYMBOL_GPL(sas_ssp_task_response);
0042