return 0;
}
-static int firmwareUpload(struct usbduxsub *usbduxsub, uint8_t *firmwareBinary,
+#define FIRMWARE_MAX_LEN 0x2000
+
+static int firmwareUpload(struct usbduxsub *usbduxsub,
+ const u8 *firmwareBinary,
int sizeFirmware)
{
int ret;
+ uint8_t *fwBuf;
if (!firmwareBinary)
return 0;
+ if (sizeFirmware>FIRMWARE_MAX_LEN) {
+ dev_err(&usbduxsub->interface->dev,
+ "comedi_: usbdux firmware binary it too large for FX2.\n");
+ return -ENOMEM;
+ }
+
+ /* we generate a local buffer for the firmware */
+ fwBuf = kzalloc(sizeFirmware, GFP_KERNEL);
+ if (!fwBuf) {
+ dev_err(&usbduxsub->interface->dev,
+ "comedi_: mem alloc for firmware failed\n");
+ return -ENOMEM;
+ }
+ memcpy(fwBuf,firmwareBinary,sizeFirmware);
+
ret = usbduxsub_stop(usbduxsub);
if (ret < 0) {
dev_err(&usbduxsub->interface->dev,
"comedi_: can not stop firmware\n");
+ kfree(fwBuf);
return ret;
}
- ret = usbduxsub_upload(usbduxsub, firmwareBinary, 0, sizeFirmware);
+
+ ret = usbduxsub_upload(usbduxsub, fwBuf, 0, sizeFirmware);
if (ret < 0) {
dev_err(&usbduxsub->interface->dev,
"comedi_: firmware upload failed\n");
+ kfree(fwBuf);
return ret;
}
ret = usbduxsub_start(usbduxsub);
if (ret < 0) {
dev_err(&usbduxsub->interface->dev,
"comedi_: can not start firmware\n");
+ kfree(fwBuf);
return ret;
}
+ kfree(fwBuf);
return 0;
}
usbduxsub_tmp->pwm_cmd_running = 0;
}
-static unsigned hex2unsigned(char *h)
-{
- unsigned hi, lo;
-
- if (h[0] > '9')
- hi = h[0] - 'A' + 0x0a;
- else
- hi = h[0] - '0';
-
- if (h[1] > '9')
- lo = h[1] - 'A' + 0x0a;
- else
- lo = h[1] - '0';
-
- return hi * 0x10 + lo;
-}
-
-/* for FX2 */
-#define FIRMWARE_MAX_LEN 0x2000
-
-/* taken from David Brownell's fxload and adjusted for this driver */
-static int read_firmware(struct usbduxsub *usbduxsub, const void *firmwarePtr,
- long size)
-{
- struct device *dev = &usbduxsub->interface->dev;
- int i = 0;
- unsigned char *fp = (char *)firmwarePtr;
- unsigned char *firmwareBinary;
- int res = 0;
- int maxAddr = 0;
-
- firmwareBinary = kzalloc(FIRMWARE_MAX_LEN, GFP_KERNEL);
- if (!firmwareBinary) {
- dev_err(dev, "comedi_: mem alloc for firmware failed\n");
- return -ENOMEM;
- }
-
- for (;;) {
- char buf[256], *cp;
- char type;
- int len;
- int idx, off;
- int j = 0;
-
- /* get one line */
- while ((i < size) && (fp[i] != 13) && (fp[i] != 10)) {
- buf[j] = fp[i];
- i++;
- j++;
- if (j >= sizeof(buf)) {
- dev_err(dev, "comedi_: bogus firmware file!\n");
- kfree(firmwareBinary);
- return -1;
- }
- }
- /* get rid of LF/CR/... */
- while ((i < size) && ((fp[i] == 13) || (fp[i] == 10)
- || (fp[i] == 0))) {
- i++;
- }
-
- buf[j] = 0;
- /* dev_dbg(dev, "comedi_: buf=%s\n", buf); */
-
- /*
- * EXTENSION:
- * "# comment-till-end-of-line", for copyrights etc
- */
- if (buf[0] == '#')
- continue;
-
- if (buf[0] != ':') {
- dev_err(dev, "comedi_: upload: not an ihex record: %s",
- buf);
- kfree(firmwareBinary);
- return -EFAULT;
- }
-
- /* Read the length field (up to 16 bytes) */
- len = hex2unsigned(buf + 1);
-
- /* Read the target offset */
- off = (hex2unsigned(buf + 3) * 0x0100) + hex2unsigned(buf + 5);
-
- if ((off + len) > maxAddr)
- maxAddr = off + len;
-
-
- if (maxAddr >= FIRMWARE_MAX_LEN) {
- dev_err(dev, "comedi_: firmware upload goes "
- "beyond FX2 RAM boundaries.\n");
- kfree(firmwareBinary);
- return -EFAULT;
- }
- /* dev_dbg(dev, "comedi_: off=%x, len=%x:\n", off, len); */
-
- /* Read the record type */
- type = hex2unsigned(buf + 7);
-
- /* If this is an EOF record, then make it so. */
- if (type == 1)
- break;
-
-
- if (type != 0) {
- dev_err(dev, "comedi_: unsupported record type: %u\n",
- type);
- kfree(firmwareBinary);
- return -EFAULT;
- }
-
- for (idx = 0, cp = buf + 9; idx < len; idx += 1, cp += 2) {
- firmwareBinary[idx + off] = hex2unsigned(cp);
- /*printk("%02x ",firmwareBinary[idx+off]); */
- }
- /*printk("\n"); */
-
- if (i >= size) {
- dev_err(dev, "comedi_: unexpected end of hex file\n");
- break;
- }
-
- }
- res = firmwareUpload(usbduxsub, firmwareBinary, maxAddr + 1);
- kfree(firmwareBinary);
- return res;
-}
-
static void usbdux_firmware_request_complete_handler(const struct firmware *fw,
void *context)
{
* we need to upload the firmware here because fw will be
* freed once we've left this function
*/
- ret = read_firmware(usbduxsub_tmp, fw->data, fw->size);
+ ret = firmwareUpload(usbduxsub_tmp, fw->data, fw->size);
if (ret) {
dev_err(&usbdev->dev,
ret = request_firmware_nowait(THIS_MODULE,
FW_ACTION_HOTPLUG,
- "usbdux_firmware.hex",
+ "usbdux_firmware.bin",
&udev->dev,
usbduxsub + index,
usbdux_firmware_request_complete_handler);
+
+
if (ret) {
dev_err(dev, "Could not load firmware (err=%d)\n", ret);
return ret;
}
/* is called when comedi-config is called */
-static int usbdux_attach(struct comedi_device *dev, comedi_devconfig *it)
+static int usbdux_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
int ret;
int index;
/* trying to upload the firmware into the chip */
if (comedi_aux_data(it->options, 0) &&
it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH]) {
- read_firmware(udev, comedi_aux_data(it->options, 0),
- it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH]);
+ firmwareUpload(udev, comedi_aux_data(it->options, 0),
+ it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH]);
}
dev->board_name = BOARDNAME;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff