If the aic94xx chip doesn't have a SAS address in the chip's flash memory,
use the request_firmware() interface to get one from userspace. This
way, there's no debate as to who or how an address gets generated--it's
totally up to the administrator to provide it if the card doesn't have one.
Signed-off-by: Darrick J. Wong <[EMAIL PROTECTED]>
---
drivers/scsi/aic94xx/aic94xx.h | 1 -
drivers/scsi/aic94xx/aic94xx_hwi.c | 40 +++++++++++++++++++++++++----------
drivers/scsi/aic94xx/aic94xx_init.c | 2 --
3 files changed, 29 insertions(+), 14 deletions(-)
diff --git a/drivers/scsi/aic94xx/aic94xx.h b/drivers/scsi/aic94xx/aic94xx.h
index 32f513b..935d558 100644
--- a/drivers/scsi/aic94xx/aic94xx.h
+++ b/drivers/scsi/aic94xx/aic94xx.h
@@ -58,7 +58,6 @@
extern struct kmem_cache *asd_dma_token_cache;
extern struct kmem_cache *asd_ascb_cache;
-extern char sas_addr_str[2*SAS_ADDR_SIZE + 1];
static inline void asd_stringify_sas_addr(char *p, const u8 *sas_addr)
{
diff --git a/drivers/scsi/aic94xx/aic94xx_hwi.c
b/drivers/scsi/aic94xx/aic94xx_hwi.c
index 0cd7eed..82a12cc 100644
--- a/drivers/scsi/aic94xx/aic94xx_hwi.c
+++ b/drivers/scsi/aic94xx/aic94xx_hwi.c
@@ -27,6 +27,7 @@
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/module.h>
+#include <linux/firmware.h>
#include "aic94xx.h"
#include "aic94xx_reg.h"
@@ -38,16 +39,34 @@ u32 MBAR0_SWB_SIZE;
/* ---------- Initialization ---------- */
-static void asd_get_user_sas_addr(struct asd_ha_struct *asd_ha)
+#define SAS_STRING_ADDR_SIZE 16
+static int asd_get_user_sas_addr(struct asd_ha_struct *asd_ha)
{
- extern char sas_addr_str[];
- /* If the user has specified a WWN it overrides other settings
- */
- if (sas_addr_str[0] != '\0')
- asd_destringify_sas_addr(asd_ha->hw_prof.sas_addr,
- sas_addr_str);
- else if (asd_ha->hw_prof.sas_addr[0] != 0)
- asd_stringify_sas_addr(sas_addr_str, asd_ha->hw_prof.sas_addr);
+ const struct firmware *fw;
+ int res;
+
+ /* adapter came with a sas address */
+ if (asd_ha->hw_prof.sas_addr[0])
+ return 0;
+
+ ASD_DPRINTK("No address found for %s; asking for one...\n",
+ pci_name(asd_ha->pcidev));
+
+ /* else go ask userspace */
+ res = request_firmware(&fw, "sas_addr", &asd_ha->pcidev->dev);
+ if (res)
+ return res;
+
+ if (fw->size < SAS_STRING_ADDR_SIZE) {
+ res = -ENODEV;
+ goto out;
+ }
+
+ asd_destringify_sas_addr(asd_ha->hw_prof.sas_addr, fw->data);
+
+out:
+ release_firmware(fw);
+ return res;
}
static void asd_propagate_sas_addr(struct asd_ha_struct *asd_ha)
@@ -657,8 +676,7 @@ int asd_init_hw(struct asd_ha_struct *asd_ha)
asd_init_ctxmem(asd_ha);
- asd_get_user_sas_addr(asd_ha);
- if (!asd_ha->hw_prof.sas_addr[0]) {
+ if (asd_get_user_sas_addr(asd_ha)) {
asd_printk("No SAS Address provided for %s\n",
pci_name(asd_ha->pcidev));
err = -ENODEV;
diff --git a/drivers/scsi/aic94xx/aic94xx_init.c
b/drivers/scsi/aic94xx/aic94xx_init.c
index b70d6e7..5c99f27 100644
--- a/drivers/scsi/aic94xx/aic94xx_init.c
+++ b/drivers/scsi/aic94xx/aic94xx_init.c
@@ -54,8 +54,6 @@ MODULE_PARM_DESC(collector, "\n"
"\tThe aic94xx SAS LLDD supports both modes.\n"
"\tDefault: 0 (Direct Mode).\n");
-char sas_addr_str[2*SAS_ADDR_SIZE + 1] = "";
-
static struct scsi_transport_template *aic94xx_transport_template;
static int asd_scan_finished(struct Scsi_Host *, unsigned long);
static void asd_scan_start(struct Scsi_Host *);
-
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