[media] af9035: reimplement firmware downloader
Big thanks to Daniel Glöckner <daniel-gl@gmx.net> for revealing firmware structure on Linux Media mailing list. Signed-off-by: Antti Palosaari <crope@iki.fi> Cc: Daniel Glöckner <daniel-gl@gmx.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Antti Palosaari
Mauro Carvalho Chehab
Родитель
5a9abae497
Коммит
77c5ff2d89
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@ -355,80 +355,74 @@ err:
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static int af9035_download_firmware(struct usb_device *udev,
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const struct firmware *fw)
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{
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u8 *fw_data_ptr = (u8 *) fw->data;
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int i, j, len, packets, remainder, ret;
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int ret, i, j, len;
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u8 wbuf[1];
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u8 rbuf[4];
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struct fw_header fw_hdr;
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struct usb_req req = { 0, 0, 0, NULL, 0, NULL };
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struct usb_req req_fw_dl = { CMD_FW_DL, 0, 0, wbuf, 0, NULL };
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struct usb_req req_fw_ver = { CMD_FW_QUERYINFO, 0, 1, wbuf, 4, rbuf } ;
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u8 hdr_core;
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u16 hdr_addr, hdr_data_len, hdr_checksum;
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#define MAX_DATA 57
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#define HDR_SIZE 7
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/* read firmware segment info from beginning of the firmware file */
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fw_hdr.segment_count = *fw_data_ptr++;
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pr_debug("%s: fw segment count=%d\n", __func__, fw_hdr.segment_count);
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if (fw_hdr.segment_count > SEGMENT_MAX_COUNT) {
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pr_debug("%s: too big fw segmen count=%d\n", __func__,
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fw_hdr.segment_count);
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fw_hdr.segment_count = SEGMENT_MAX_COUNT;
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}
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for (i = 0; i < fw_hdr.segment_count; i++) {
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fw_hdr.segment[i].type = (*fw_data_ptr++);
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fw_hdr.segment[i].len = (*fw_data_ptr++) << 24;
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fw_hdr.segment[i].len += (*fw_data_ptr++) << 16;
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fw_hdr.segment[i].len += (*fw_data_ptr++) << 8;
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fw_hdr.segment[i].len += (*fw_data_ptr++) << 0;
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pr_debug("%s: fw segment type=%d len=%d\n", __func__,
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fw_hdr.segment[i].type, fw_hdr.segment[i].len);
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}
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/*
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* Thanks to Daniel Glöckner <daniel-gl@gmx.net> about that info!
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*
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* byte 0: MCS 51 core
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* There are two inside the AF9035 (1=Link and 2=OFDM) with separate
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* address spaces
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* byte 1-2: Big endian destination address
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* byte 3-4: Big endian number of data bytes following the header
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* byte 5-6: Big endian header checksum, apparently ignored by the chip
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* Calculated as ~(h[0]*256+h[1]+h[2]*256+h[3]+h[4]*256)
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*/
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#define FW_PACKET_MAX_DATA 57 /* 63-4-2, packet_size-header-checksum */
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for (i = fw->size; i > HDR_SIZE;) {
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hdr_core = fw->data[fw->size - i + 0];
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hdr_addr = fw->data[fw->size - i + 1] << 8;
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hdr_addr |= fw->data[fw->size - i + 2] << 0;
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hdr_data_len = fw->data[fw->size - i + 3] << 8;
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hdr_data_len |= fw->data[fw->size - i + 4] << 0;
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hdr_checksum = fw->data[fw->size - i + 5] << 8;
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hdr_checksum |= fw->data[fw->size - i + 6] << 0;
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/* download all segments */
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for (i = 0; i < fw_hdr.segment_count; i++) {
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pr_debug("%s: segment type=%d\n", __func__,
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fw_hdr.segment[i].type);
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if (fw_hdr.segment[i].type == SEGMENT_FW_DL) {
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/* download begin packet */
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req.cmd = CMD_FW_DL_BEGIN;
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ret = af9035_ctrl_msg(udev, &req);
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if (ret < 0) {
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pr_debug("%s: fw dl failed=%d\n", __func__,
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ret);
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goto err;
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}
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pr_debug("%s: core=%d addr=%04x data_len=%d checksum=%04x\n",
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__func__, hdr_core, hdr_addr, hdr_data_len,
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hdr_checksum);
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packets = fw_hdr.segment[i].len / FW_PACKET_MAX_DATA;
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remainder = fw_hdr.segment[i].len % FW_PACKET_MAX_DATA;
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len = FW_PACKET_MAX_DATA;
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for (j = 0; j <= packets; j++) {
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if (j == packets) /* size of the last packet */
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len = remainder;
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req_fw_dl.wlen = len;
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req_fw_dl.wbuf = fw_data_ptr;
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ret = af9035_ctrl_msg(udev, &req_fw_dl);
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if (ret < 0) {
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pr_debug("%s: fw dl failed=%d " \
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"segment=%d " \
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"packet=%d\n",
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__func__, ret, i, j);
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goto err;
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}
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fw_data_ptr += len;
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}
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/* download end packet */
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req.cmd = CMD_FW_DL_END;
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ret = af9035_ctrl_msg(udev, &req);
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if (ret < 0) {
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pr_debug("%s: fw dl failed=%d\n", __func__,
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ret);
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goto err;
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}
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} else {
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pr_debug("%s: segment type=%d not implemented\n",
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__func__, fw_hdr.segment[i].type);
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if (((hdr_core != 1) && (hdr_core != 2)) ||
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(hdr_data_len > i)) {
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pr_debug("%s: bad firmware\n", __func__);
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break;
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}
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/* download begin packet */
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req.cmd = CMD_FW_DL_BEGIN;
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ret = af9035_ctrl_msg(udev, &req);
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/* download firmware packet(s) */
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for (j = HDR_SIZE + hdr_data_len; j > 0; j -= MAX_DATA) {
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len = j;
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if (len > MAX_DATA)
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len = MAX_DATA;
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req_fw_dl.wlen = len;
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req_fw_dl.wbuf = (u8 *) &fw->data[fw->size - i +
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HDR_SIZE + hdr_data_len - j];
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ret = af9035_ctrl_msg(udev, &req_fw_dl);
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if (ret < 0)
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goto err;
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}
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/* download end packet */
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req.cmd = CMD_FW_DL_END;
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ret = af9035_ctrl_msg(udev, &req);
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if (ret < 0)
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goto err;
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i -= hdr_data_len + HDR_SIZE;
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pr_debug("%s: data uploaded=%lu\n", __func__, fw->size - i);
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}
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/* firmware loaded, request boot */
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@ -443,15 +437,15 @@ static int af9035_download_firmware(struct usb_device *udev,
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if (ret < 0)
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goto err;
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pr_debug("%s: reply=%02x %02x %02x %02x\n", __func__,
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rbuf[0], rbuf[1], rbuf[2], rbuf[3]);
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if (!(rbuf[0] || rbuf[1] || rbuf[2] || rbuf[3])) {
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pr_debug("%s: fw did not run\n", __func__);
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info("firmware did not run");
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ret = -ENODEV;
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goto err;
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}
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info("firmware version=%d.%d.%d.%d", rbuf[0], rbuf[1], rbuf[2],
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rbuf[3]);
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return 0;
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err:
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@ -654,7 +648,7 @@ static struct dvb_usb_device_properties af9035_properties[] = {
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.usb_ctrl = DEVICE_SPECIFIC,
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.download_firmware = af9035_download_firmware,
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.firmware = "dvb-usb-af9035-01.fw",
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.firmware = "dvb-usb-af9035-02.fw",
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.no_reconnect = 1,
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.num_adapters = 1,
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