[SCSI] aic94xx: update BIOS image from user space.
1. Create a file "update_bios" in sysfs to allow user to update bios
from user space.
2. The BIOS image file can be downloaded from web site
"http://www.adaptec.com/en-US/downloads/bios_fw/bios_fw_ver?productId=SAS-48300&dn=Adaptec+Serial+Attached+SCSI+48300"
and copy the BIOS image into /lib/firmware folder.
3. The aic994xx will accept "update bios_file" and "verify bios_file"
commands to perform update and verify BIOS image .
For example:
Type "echo "update asc483c01.ufi" > /sys/devices/.../update_bios"
to update BIOS image from /lib/firmware/as483c01.ufi file into
HBA's flash memory.
Type "echo "verify asc483c01.ufi" > /sys/devices/.../update_bios"
to verify BIOS image between /lib/firmware/asc48c01.ufi file
and
HBA's flash memory.
4. Type "cat /sys/devices/.../update_bios" to view the status or
result
of updating BIOS.
Signed-off-by: Gilbert Wu <gilbert_wu@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/aic94xx/aic94xx_init.c b/drivers/scsi/aic94xx/aic94xx_init.c
index b70d6e7..de06670 100644
--- a/drivers/scsi/aic94xx/aic94xx_init.c
+++ b/drivers/scsi/aic94xx/aic94xx_init.c
@@ -29,6 +29,7 @@
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/delay.h>
+#include <linux/firmware.h>
#include <scsi/scsi_host.h>
@@ -36,6 +37,7 @@
#include "aic94xx_reg.h"
#include "aic94xx_hwi.h"
#include "aic94xx_seq.h"
+#include "aic94xx_sds.h"
/* The format is "version.release.patchlevel" */
#define ASD_DRIVER_VERSION "1.0.3"
@@ -313,6 +315,181 @@
}
static DEVICE_ATTR(pcba_sn, S_IRUGO, asd_show_dev_pcba_sn, NULL);
+#define FLASH_CMD_NONE 0x00
+#define FLASH_CMD_UPDATE 0x01
+#define FLASH_CMD_VERIFY 0x02
+
+struct flash_command {
+ u8 command[8];
+ int code;
+};
+
+static struct flash_command flash_command_table[] =
+{
+ {"verify", FLASH_CMD_VERIFY},
+ {"update", FLASH_CMD_UPDATE},
+ {"", FLASH_CMD_NONE} /* Last entry should be NULL. */
+};
+
+struct error_bios {
+ char *reason;
+ int err_code;
+};
+
+static struct error_bios flash_error_table[] =
+{
+ {"Failed to open bios image file", FAIL_OPEN_BIOS_FILE},
+ {"PCI ID mismatch", FAIL_CHECK_PCI_ID},
+ {"Checksum mismatch", FAIL_CHECK_SUM},
+ {"Unknown Error", FAIL_UNKNOWN},
+ {"Failed to verify.", FAIL_VERIFY},
+ {"Failed to reset flash chip.", FAIL_RESET_FLASH},
+ {"Failed to find flash chip type.", FAIL_FIND_FLASH_ID},
+ {"Failed to erash flash chip.", FAIL_ERASE_FLASH},
+ {"Failed to program flash chip.", FAIL_WRITE_FLASH},
+ {"Flash in progress", FLASH_IN_PROGRESS},
+ {"Image file size Error", FAIL_FILE_SIZE},
+ {"Input parameter error", FAIL_PARAMETERS},
+ {"Out of memory", FAIL_OUT_MEMORY},
+ {"OK", 0} /* Last entry err_code = 0. */
+};
+
+static ssize_t asd_store_update_bios(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
+ char *cmd_ptr, *filename_ptr;
+ struct bios_file_header header, *hdr_ptr;
+ int res, i;
+ u32 csum = 0;
+ int flash_command = FLASH_CMD_NONE;
+ int err = 0;
+
+ cmd_ptr = kzalloc(count*2, GFP_KERNEL);
+
+ if (!cmd_ptr) {
+ err = FAIL_OUT_MEMORY;
+ goto out;
+ }
+
+ filename_ptr = cmd_ptr + count;
+ res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
+ if (res != 2) {
+ err = FAIL_PARAMETERS;
+ goto out1;
+ }
+
+ for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
+ if (!memcmp(flash_command_table[i].command,
+ cmd_ptr, strlen(cmd_ptr))) {
+ flash_command = flash_command_table[i].code;
+ break;
+ }
+ }
+ if (flash_command == FLASH_CMD_NONE) {
+ err = FAIL_PARAMETERS;
+ goto out1;
+ }
+
+ if (asd_ha->bios_status == FLASH_IN_PROGRESS) {
+ err = FLASH_IN_PROGRESS;
+ goto out1;
+ }
+ err = request_firmware(&asd_ha->bios_image,
+ filename_ptr,
+ &asd_ha->pcidev->dev);
+ if (err) {
+ asd_printk("Failed to load bios image file %s, error %d\n",
+ filename_ptr, err);
+ err = FAIL_OPEN_BIOS_FILE;
+ goto out1;
+ }
+
+ hdr_ptr = (struct bios_file_header *)asd_ha->bios_image->data;
+
+ if ((hdr_ptr->contrl_id.vendor != asd_ha->pcidev->vendor ||
+ hdr_ptr->contrl_id.device != asd_ha->pcidev->device) &&
+ (hdr_ptr->contrl_id.sub_vendor != asd_ha->pcidev->vendor ||
+ hdr_ptr->contrl_id.sub_device != asd_ha->pcidev->device)) {
+
+ ASD_DPRINTK("The PCI vendor or device id does not match\n");
+ ASD_DPRINTK("vendor=%x dev=%x sub_vendor=%x sub_dev=%x"
+ " pci vendor=%x pci dev=%x\n",
+ hdr_ptr->contrl_id.vendor,
+ hdr_ptr->contrl_id.device,
+ hdr_ptr->contrl_id.sub_vendor,
+ hdr_ptr->contrl_id.sub_device,
+ asd_ha->pcidev->vendor,
+ asd_ha->pcidev->device);
+ err = FAIL_CHECK_PCI_ID;
+ goto out2;
+ }
+
+ if (hdr_ptr->filelen != asd_ha->bios_image->size) {
+ err = FAIL_FILE_SIZE;
+ goto out2;
+ }
+
+ /* calculate checksum */
+ for (i = 0; i < hdr_ptr->filelen; i++)
+ csum += asd_ha->bios_image->data[i];
+
+ if ((csum & 0x0000ffff) != hdr_ptr->checksum) {
+ ASD_DPRINTK("BIOS file checksum mismatch\n");
+ err = FAIL_CHECK_SUM;
+ goto out2;
+ }
+ if (flash_command == FLASH_CMD_UPDATE) {
+ asd_ha->bios_status = FLASH_IN_PROGRESS;
+ err = asd_write_flash_seg(asd_ha,
+ &asd_ha->bios_image->data[sizeof(*hdr_ptr)],
+ 0, hdr_ptr->filelen-sizeof(*hdr_ptr));
+ if (!err)
+ err = asd_verify_flash_seg(asd_ha,
+ &asd_ha->bios_image->data[sizeof(*hdr_ptr)],
+ 0, hdr_ptr->filelen-sizeof(*hdr_ptr));
+ } else {
+ asd_ha->bios_status = FLASH_IN_PROGRESS;
+ err = asd_verify_flash_seg(asd_ha,
+ &asd_ha->bios_image->data[sizeof(header)],
+ 0, hdr_ptr->filelen-sizeof(header));
+ }
+
+out2:
+ release_firmware(asd_ha->bios_image);
+out1:
+ kfree(cmd_ptr);
+out:
+ asd_ha->bios_status = err;
+
+ if (!err)
+ return count;
+ else
+ return -err;
+}
+
+static ssize_t asd_show_update_bios(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int i;
+ struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
+
+ for (i = 0; flash_error_table[i].err_code != 0; i++) {
+ if (flash_error_table[i].err_code == asd_ha->bios_status)
+ break;
+ }
+ if (asd_ha->bios_status != FLASH_IN_PROGRESS)
+ asd_ha->bios_status = FLASH_OK;
+
+ return snprintf(buf, PAGE_SIZE, "status=%x %s\n",
+ flash_error_table[i].err_code,
+ flash_error_table[i].reason);
+}
+
+static DEVICE_ATTR(update_bios, S_IRUGO|S_IWUGO,
+ asd_show_update_bios, asd_store_update_bios);
+
static int asd_create_dev_attrs(struct asd_ha_struct *asd_ha)
{
int err;
@@ -328,9 +505,14 @@
err = device_create_file(&asd_ha->pcidev->dev, &dev_attr_pcba_sn);
if (err)
goto err_biosb;
+ err = device_create_file(&asd_ha->pcidev->dev, &dev_attr_update_bios);
+ if (err)
+ goto err_update_bios;
return 0;
+err_update_bios:
+ device_remove_file(&asd_ha->pcidev->dev, &dev_attr_pcba_sn);
err_biosb:
device_remove_file(&asd_ha->pcidev->dev, &dev_attr_bios_build);
err_rev:
@@ -343,6 +525,7 @@
device_remove_file(&asd_ha->pcidev->dev, &dev_attr_revision);
device_remove_file(&asd_ha->pcidev->dev, &dev_attr_bios_build);
device_remove_file(&asd_ha->pcidev->dev, &dev_attr_pcba_sn);
+ device_remove_file(&asd_ha->pcidev->dev, &dev_attr_update_bios);
}
/* The first entry, 0, is used for dynamic ids, the rest for devices
@@ -589,6 +772,7 @@
asd_ha->sas_ha.dev = &asd_ha->pcidev->dev;
asd_ha->sas_ha.lldd_ha = asd_ha;
+ asd_ha->bios_status = FLASH_OK;
asd_ha->name = asd_dev->name;
asd_printk("found %s, device %s\n", asd_ha->name, pci_name(dev));