cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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sas_task.c (1188B)

      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 */
     11void 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}
     41EXPORT_SYMBOL_GPL(sas_ssp_task_response);
     42