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libertas: add sysfs hooks to update boot2 and persistent firmware 

To use these features, copy the boot2 and firmware images to /lib/firmware and:

echo <boot2_image_name> > /sys/class/net/ethX/lbs_flash_boot2
echo <firmware_image_name> > /sys/class/net/ethX/lbs_flash_fw

Signed-off-by: Brian Cavagnolo <brian@cozybit.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Brian Cavagnolo 2008-07-21 11:03:16 -07:00 committed by John W. Linville
parent 1556c0f22d
commit 1ff41eb0d9
1 changed files with 65 additions and 0 deletions
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65
drivers/net/wireless/libertas/if_usb.c
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@ -51,6 +51,62 @@ static void if_usb_free(struct if_usb_card *cardp);
static int if_usb_submit_rx_urb(struct if_usb_card *cardp);
static int if_usb_reset_device(struct if_usb_card *cardp);
/* sysfs hooks */
/**
* Set function to write firmware to device's persistent memory
*/
static ssize_t if_usb_firmware_set(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct lbs_private *priv = to_net_dev(dev)->priv;
struct if_usb_card *cardp = priv->card;
char fwname[FIRMWARE_NAME_MAX];
int ret;
sscanf(buf, "%29s", fwname); /* FIRMWARE_NAME_MAX - 1 = 29 */
ret = if_usb_prog_firmware(cardp, fwname, BOOT_CMD_UPDATE_FW);
if (ret == 0)
return count;
return ret;
}
/**
* lbs_flash_fw attribute to be exported per ethX interface through sysfs
* (/sys/class/net/ethX/lbs_flash_fw). Use this like so to write firmware to
* the device's persistent memory:
* echo usb8388-5.126.0.p5.bin > /sys/class/net/ethX/lbs_flash_fw
*/
static DEVICE_ATTR(lbs_flash_fw, 0200, NULL, if_usb_firmware_set);
/**
* Set function to write firmware to device's persistent memory
*/
static ssize_t if_usb_boot2_set(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct lbs_private *priv = to_net_dev(dev)->priv;
struct if_usb_card *cardp = priv->card;
char fwname[FIRMWARE_NAME_MAX];
int ret;
sscanf(buf, "%29s", fwname); /* FIRMWARE_NAME_MAX - 1 = 29 */
ret = if_usb_prog_firmware(cardp, fwname, BOOT_CMD_UPDATE_BOOT2);
if (ret == 0)
return count;
return ret;
}
/**
* lbs_flash_boot2 attribute to be exported per ethX interface through sysfs
* (/sys/class/net/ethX/lbs_flash_boot2). Use this like so to write firmware
* to the device's persistent memory:
* echo usb8388-5.126.0.p5.bin > /sys/class/net/ethX/lbs_flash_boot2
*/
static DEVICE_ATTR(lbs_flash_boot2, 0200, NULL, if_usb_boot2_set);
/**
* @brief call back function to handle the status of the URB
* @param urb pointer to urb structure
@ -263,6 +319,12 @@ static int if_usb_probe(struct usb_interface *intf,
usb_get_dev(udev);
usb_set_intfdata(intf, cardp);
if (device_create_file(&priv->dev->dev, &dev_attr_lbs_flash_fw))
lbs_pr_err("cannot register lbs_flash_fw attribute\n");
if (device_create_file(&priv->dev->dev, &dev_attr_lbs_flash_boot2))
lbs_pr_err("cannot register lbs_flash_boot2 attribute\n");
return 0;
err_start_card:
@ -288,6 +350,9 @@ static void if_usb_disconnect(struct usb_interface *intf)
lbs_deb_enter(LBS_DEB_MAIN);
device_remove_file(&priv->dev->dev, &dev_attr_lbs_flash_boot2);
device_remove_file(&priv->dev->dev, &dev_attr_lbs_flash_fw);
cardp->surprise_removed = 1;
if (priv) {