sas_task.c

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#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;

    if (iu->datapres == 0)
        tstat->stat = iu->status;
    else if (iu->datapres == 1)
        tstat->stat = iu->resp_data[3];
    else if (iu->datapres == 2) {
        tstat->stat = 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_printk(KERN_WARNING, dev,
                   "dev %llx sent sense data, but "
                   "stat(%x) is not CHECK CONDITION\n",
                   SAS_ADDR(task->dev->sas_addr),
                   iu->status);
    }
    else
        /* when datapres contains corrupt/unknown value... */
        tstat->stat = SAM_STAT_CHECK_CONDITION;
}
EXPORT_SYMBOL_GPL(sas_ssp_task_response);