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-rw-r--r--drivers/scsi/libsas/sas_scsi_host.c41
-rw-r--r--include/scsi/libsas.h2
2 files changed, 43 insertions, 0 deletions
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index 1f8241563c6c..601ec5b6a7f6 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -24,6 +24,8 @@
*/
#include <linux/kthread.h>
+#include <linux/firmware.h>
+#include <linux/ctype.h>
#include "sas_internal.h"
@@ -1064,6 +1066,45 @@ void sas_target_destroy(struct scsi_target *starget)
return;
}
+static void sas_parse_addr(u8 *sas_addr, const char *p)
+{
+ int i;
+ for (i = 0; i < SAS_ADDR_SIZE; i++) {
+ u8 h, l;
+ if (!*p)
+ break;
+ h = isdigit(*p) ? *p-'0' : toupper(*p)-'A'+10;
+ p++;
+ l = isdigit(*p) ? *p-'0' : toupper(*p)-'A'+10;
+ p++;
+ sas_addr[i] = (h<<4) | l;
+ }
+}
+
+#define SAS_STRING_ADDR_SIZE 16
+
+int sas_request_addr(struct Scsi_Host *shost, u8 *addr)
+{
+ int res;
+ const struct firmware *fw;
+
+ res = request_firmware(&fw, "sas_addr", &shost->shost_gendev);
+ if (res)
+ return res;
+
+ if (fw->size < SAS_STRING_ADDR_SIZE) {
+ res = -ENODEV;
+ goto out;
+ }
+
+ sas_parse_addr(addr, fw->data);
+
+out:
+ release_firmware(fw);
+ return res;
+}
+EXPORT_SYMBOL_GPL(sas_request_addr);
+
EXPORT_SYMBOL_GPL(sas_queuecommand);
EXPORT_SYMBOL_GPL(sas_target_alloc);
EXPORT_SYMBOL_GPL(sas_slave_configure);
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 39e1cac24bb7..98724ba65a79 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -677,4 +677,6 @@ extern void sas_ssp_task_response(struct device *dev, struct sas_task *task,
struct ssp_response_iu *iu);
struct sas_phy *sas_find_local_phy(struct domain_device *dev);
+int sas_request_addr(struct Scsi_Host *shost, u8 *addr);
+
#endif /* _SASLIB_H_ */