Commit 77c5ff2d authored by Antti Palosaari's avatar Antti Palosaari Committed by Mauro Carvalho Chehab

[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: default avatarAntti Palosaari <crope@iki.fi>
Cc: Daniel Glöckner <daniel-gl@gmx.net>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 5a9abae4
......@@ -355,80 +355,74 @@ static int af9035_identify_state(struct usb_device *udev,
static int af9035_download_firmware(struct usb_device *udev,
const struct firmware *fw)
{
u8 *fw_data_ptr = (u8 *) fw->data;
int i, j, len, packets, remainder, ret;
int ret, i, j, len;
u8 wbuf[1];
u8 rbuf[4];
struct fw_header fw_hdr;
struct usb_req req = { 0, 0, 0, NULL, 0, NULL };
struct usb_req req_fw_dl = { CMD_FW_DL, 0, 0, wbuf, 0, NULL };
struct usb_req req_fw_ver = { CMD_FW_QUERYINFO, 0, 1, wbuf, 4, rbuf } ;
u8 hdr_core;
u16 hdr_addr, hdr_data_len, hdr_checksum;
#define MAX_DATA 57
#define HDR_SIZE 7
/*
* Thanks to Daniel Glöckner <daniel-gl@gmx.net> about that info!
*
* byte 0: MCS 51 core
* There are two inside the AF9035 (1=Link and 2=OFDM) with separate
* address spaces
* byte 1-2: Big endian destination address
* byte 3-4: Big endian number of data bytes following the header
* byte 5-6: Big endian header checksum, apparently ignored by the chip
* Calculated as ~(h[0]*256+h[1]+h[2]*256+h[3]+h[4]*256)
*/
for (i = fw->size; i > HDR_SIZE;) {
hdr_core = fw->data[fw->size - i + 0];
hdr_addr = fw->data[fw->size - i + 1] << 8;
hdr_addr |= fw->data[fw->size - i + 2] << 0;
hdr_data_len = fw->data[fw->size - i + 3] << 8;
hdr_data_len |= fw->data[fw->size - i + 4] << 0;
hdr_checksum = fw->data[fw->size - i + 5] << 8;
hdr_checksum |= fw->data[fw->size - i + 6] << 0;
pr_debug("%s: core=%d addr=%04x data_len=%d checksum=%04x\n",
__func__, hdr_core, hdr_addr, hdr_data_len,
hdr_checksum);
if (((hdr_core != 1) && (hdr_core != 2)) ||
(hdr_data_len > i)) {
pr_debug("%s: bad firmware\n", __func__);
break;
}
/* read firmware segment info from beginning of the firmware file */
fw_hdr.segment_count = *fw_data_ptr++;
pr_debug("%s: fw segment count=%d\n", __func__, fw_hdr.segment_count);
if (fw_hdr.segment_count > SEGMENT_MAX_COUNT) {
pr_debug("%s: too big fw segmen count=%d\n", __func__,
fw_hdr.segment_count);
fw_hdr.segment_count = SEGMENT_MAX_COUNT;
}
for (i = 0; i < fw_hdr.segment_count; i++) {
fw_hdr.segment[i].type = (*fw_data_ptr++);
fw_hdr.segment[i].len = (*fw_data_ptr++) << 24;
fw_hdr.segment[i].len += (*fw_data_ptr++) << 16;
fw_hdr.segment[i].len += (*fw_data_ptr++) << 8;
fw_hdr.segment[i].len += (*fw_data_ptr++) << 0;
pr_debug("%s: fw segment type=%d len=%d\n", __func__,
fw_hdr.segment[i].type, fw_hdr.segment[i].len);
}
#define FW_PACKET_MAX_DATA 57 /* 63-4-2, packet_size-header-checksum */
/* download all segments */
for (i = 0; i < fw_hdr.segment_count; i++) {
pr_debug("%s: segment type=%d\n", __func__,
fw_hdr.segment[i].type);
if (fw_hdr.segment[i].type == SEGMENT_FW_DL) {
/* download begin packet */
req.cmd = CMD_FW_DL_BEGIN;
ret = af9035_ctrl_msg(udev, &req);
if (ret < 0) {
pr_debug("%s: fw dl failed=%d\n", __func__,
ret);
goto err;
}
packets = fw_hdr.segment[i].len / FW_PACKET_MAX_DATA;
remainder = fw_hdr.segment[i].len % FW_PACKET_MAX_DATA;
len = FW_PACKET_MAX_DATA;
for (j = 0; j <= packets; j++) {
if (j == packets) /* size of the last packet */
len = remainder;
/* download firmware packet(s) */
for (j = HDR_SIZE + hdr_data_len; j > 0; j -= MAX_DATA) {
len = j;
if (len > MAX_DATA)
len = MAX_DATA;
req_fw_dl.wlen = len;
req_fw_dl.wbuf = fw_data_ptr;
req_fw_dl.wbuf = (u8 *) &fw->data[fw->size - i +
HDR_SIZE + hdr_data_len - j];
ret = af9035_ctrl_msg(udev, &req_fw_dl);
if (ret < 0) {
pr_debug("%s: fw dl failed=%d " \
"segment=%d " \
"packet=%d\n",
__func__, ret, i, j);
if (ret < 0)
goto err;
}
fw_data_ptr += len;
}
/* download end packet */
req.cmd = CMD_FW_DL_END;
ret = af9035_ctrl_msg(udev, &req);
if (ret < 0) {
pr_debug("%s: fw dl failed=%d\n", __func__,
ret);
if (ret < 0)
goto err;
}
} else {
pr_debug("%s: segment type=%d not implemented\n",
__func__, fw_hdr.segment[i].type);
}
i -= hdr_data_len + HDR_SIZE;
pr_debug("%s: data uploaded=%lu\n", __func__, fw->size - i);
}
/* firmware loaded, request boot */
......@@ -443,15 +437,15 @@ static int af9035_download_firmware(struct usb_device *udev,
if (ret < 0)
goto err;
pr_debug("%s: reply=%02x %02x %02x %02x\n", __func__,
rbuf[0], rbuf[1], rbuf[2], rbuf[3]);
if (!(rbuf[0] || rbuf[1] || rbuf[2] || rbuf[3])) {
pr_debug("%s: fw did not run\n", __func__);
info("firmware did not run");
ret = -ENODEV;
goto err;
}
info("firmware version=%d.%d.%d.%d", rbuf[0], rbuf[1], rbuf[2],
rbuf[3]);
return 0;
err:
......@@ -654,7 +648,7 @@ static struct dvb_usb_device_properties af9035_properties[] = {
.usb_ctrl = DEVICE_SPECIFIC,
.download_firmware = af9035_download_firmware,
.firmware = "dvb-usb-af9035-01.fw",
.firmware = "dvb-usb-af9035-02.fw",
.no_reconnect = 1,
.num_adapters = 1,
......
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