This is needed for my G220F, otherwise it fails to initialize after the
existing firmware upload routine.
The vendor driver actually does more than what I have done here: it
downloads the firmware + boot code, modifies it, and uploads it again
(really messy). I have not copied that part over, as my device can get
on its feet without it.
Signed-off-by: Daniel Drake <[EMAIL PROTECTED]>
Index: linux-2.6/drivers/net/wireless/zd1211rw/zd_chip.h
===================================================================
--- linux-2.6.orig/drivers/net/wireless/zd1211rw/zd_chip.h
+++ linux-2.6/drivers/net/wireless/zd1211rw/zd_chip.h
@@ -638,6 +638,7 @@ enum {
LOAD_CODE_SIZE = 0xe, /* words */
LOAD_VECT_SIZE = 0x10000 - 0xfff7, /* words */
EEPROM_REGS_OFFSET = LOAD_CODE_SIZE + LOAD_VECT_SIZE,
+ EEPROM_REGS_SIZE = 0x7e, /* words */
E2P_BASE_OFFSET = EEPROM_START_OFFSET +
EEPROM_REGS_OFFSET,
};
Index: linux-2.6/drivers/net/wireless/zd1211rw/zd_usb.c
===================================================================
--- linux-2.6.orig/drivers/net/wireless/zd1211rw/zd_usb.c
+++ linux-2.6/drivers/net/wireless/zd1211rw/zd_usb.c
@@ -16,6 +16,7 @@
*/
#include <asm/unaligned.h>
+#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/firmware.h>
@@ -269,6 +270,39 @@ static char *get_fw_name(char *buffer, s
return buffer;
}
+static int handle_version_mismatch(struct usb_device *udev, u8 device_type,
+ const struct firmware *ub_fw)
+{
+ const struct firmware *ur_fw = NULL;
+ int offset;
+ int r = 0;
+ char fw_name[128];
+
+ r = request_fw_file(&ur_fw,
+ get_fw_name(fw_name, sizeof(fw_name), device_type, "ur"),
+ &udev->dev);
+ if (r)
+ goto error;
+
+ r = upload_code(udev, ur_fw->data, ur_fw->size, FW_START_OFFSET,
+ REBOOT);
+ if (r)
+ goto error;
+
+ offset = ((EEPROM_REGS_OFFSET + EEPROM_REGS_SIZE) * sizeof(u16));
+ r = upload_code(udev, ub_fw->data + offset, ub_fw->size - offset,
+ E2P_BASE_OFFSET + EEPROM_REGS_SIZE, REBOOT);
+
+ /* At this point, the vendor driver downloads the whole firmware
+ * image, hacks around with version IDs, and uploads it again,
+ * completely overwriting the boot code. We do not do this here as
+ * it is not required on any tested devices, and it is suspected to
+ * cause problems. */
+error:
+ release_firmware(ur_fw);
+ return r;
+}
+
static int upload_firmware(struct usb_device *udev, u8 device_type)
{
int r;
@@ -288,15 +322,17 @@ static int upload_firmware(struct usb_de
fw_bcdDevice = get_word(ub_fw->data, EEPROM_REGS_OFFSET);
- /* FIXME: do we have any reason to perform the kludge that the vendor
- * driver does when there is a version mismatch? (their driver uploads
- * different firmwares and stuff)
- */
if (fw_bcdDevice != bcdDevice) {
dev_info(&udev->dev,
- "firmware device id %#06x and actual device id "
- "%#06x differ, continuing anyway\n",
- fw_bcdDevice, bcdDevice);
+ "firmware version %#06x and device bootcode version "
+ "%#06x differ\n", fw_bcdDevice, bcdDevice);
+ if (bcdDevice <= 0x4313)
+ dev_warn(&udev->dev, "device has old bootcode, please "
+ "report success or failure\n");
+
+ r = handle_version_mismatch(udev, device_type, ub_fw);
+ if (r)
+ goto error;
} else {
dev_dbg_f(&udev->dev,
"firmware device id %#06x is equal to the "
-
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