Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / scsi / libsas / sas_task.c

diff --git a/kernel/drivers/scsi/libsas/sas_task.c b/kernel/drivers/scsi/libsas/sas_task.c
new file mode 100644 (file)
index 0000000..a78e5bd
--- /dev/null
+++ b/kernel/drivers/scsi/libsas/sas_task.c
@@ -0,0 +1,37 @@
+#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);
+