// SPDX-License-Identifier: GPL-2.0-only

#include "sas_internal.h"

#include <linux/kernel.h>
#include <linux/export.h>
#include <scsi/sas.h>
#include <scsi/libsas.h>

/* fill task_status_struct based on SSP response frame */
void sas_ssp_task_response(struct device *dev, struct sas_task *task,
                           struct ssp_response_iu *iu)
{
        struct task_status_struct *tstat = &task->task_status;

        tstat->resp = SAS_TASK_COMPLETE;

        switch (iu->datapres) {
        case SAS_DATAPRES_NO_DATA:
                tstat->stat = iu->status;
                break;
        case SAS_DATAPRES_RESPONSE_DATA:
                tstat->stat = iu->resp_data[3];
                break;
        case SAS_DATAPRES_SENSE_DATA:
                tstat->stat = SAS_SAM_STAT_CHECK_CONDITION;
                tstat->buf_valid_size =
                        min_t(int, SAS_STATUS_BUF_SIZE,
                              be32_to_cpu(iu->sense_data_len));
                memcpy(tstat->buf, iu->sense_data, tstat->buf_valid_size);

                if (iu->status != SAM_STAT_CHECK_CONDITION)
                        dev_warn(dev, "dev %016llx sent sense data, but stat(0x%x) is not CHECK CONDITION\n",
                                 SAS_ADDR(task->dev->sas_addr), iu->status);
                break;
        default:
                /* when datapres contains corrupt/unknown value... */
                tstat->stat = SAS_SAM_STAT_CHECK_CONDITION;
        }
}
EXPORT_SYMBOL_GPL(sas_ssp_task_response);