422 lines
10 KiB
C
422 lines
10 KiB
C
/*
|
|
* Linux driver for TerraTec DMX 6Fire USB
|
|
*
|
|
* Firmware loader
|
|
*
|
|
* Author: Torsten Schenk <torsten.schenk@zoho.com>
|
|
* Created: Jan 01, 2011
|
|
* Copyright: (C) Torsten Schenk
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/firmware.h>
|
|
#include <linux/module.h>
|
|
#include <linux/bitrev.h>
|
|
#include <linux/kernel.h>
|
|
|
|
#include "firmware.h"
|
|
#include "chip.h"
|
|
|
|
MODULE_FIRMWARE("6fire/dmx6firel2.ihx");
|
|
MODULE_FIRMWARE("6fire/dmx6fireap.ihx");
|
|
MODULE_FIRMWARE("6fire/dmx6firecf.bin");
|
|
|
|
enum {
|
|
FPGA_BUFSIZE = 512, FPGA_EP = 2
|
|
};
|
|
|
|
/*
|
|
* wMaxPacketSize of pcm endpoints.
|
|
* keep synced with rates_in_packet_size and rates_out_packet_size in pcm.c
|
|
* fpp: frames per isopacket
|
|
*
|
|
* CAUTION: keep sizeof <= buffer[] in usb6fire_fw_init
|
|
*/
|
|
static const u8 ep_w_max_packet_size[] = {
|
|
0xe4, 0x00, 0xe4, 0x00, /* alt 1: 228 EP2 and EP6 (7 fpp) */
|
|
0xa4, 0x01, 0xa4, 0x01, /* alt 2: 420 EP2 and EP6 (13 fpp)*/
|
|
0x94, 0x01, 0x5c, 0x02 /* alt 3: 404 EP2 and 604 EP6 (25 fpp) */
|
|
};
|
|
|
|
static const u8 known_fw_versions[][2] = {
|
|
{ 0x03, 0x01 }
|
|
};
|
|
|
|
struct ihex_record {
|
|
u16 address;
|
|
u8 len;
|
|
u8 data[256];
|
|
char error; /* true if an error occurred parsing this record */
|
|
|
|
u8 max_len; /* maximum record length in whole ihex */
|
|
|
|
/* private */
|
|
const char *txt_data;
|
|
unsigned int txt_length;
|
|
unsigned int txt_offset; /* current position in txt_data */
|
|
};
|
|
|
|
static u8 usb6fire_fw_ihex_hex(const u8 *data, u8 *crc)
|
|
{
|
|
u8 val = 0;
|
|
int hval;
|
|
|
|
hval = hex_to_bin(data[0]);
|
|
if (hval >= 0)
|
|
val |= (hval << 4);
|
|
|
|
hval = hex_to_bin(data[1]);
|
|
if (hval >= 0)
|
|
val |= hval;
|
|
|
|
*crc += val;
|
|
return val;
|
|
}
|
|
|
|
/*
|
|
* returns true if record is available, false otherwise.
|
|
* iff an error occurred, false will be returned and record->error will be true.
|
|
*/
|
|
static bool usb6fire_fw_ihex_next_record(struct ihex_record *record)
|
|
{
|
|
u8 crc = 0;
|
|
u8 type;
|
|
int i;
|
|
|
|
record->error = false;
|
|
|
|
/* find begin of record (marked by a colon) */
|
|
while (record->txt_offset < record->txt_length
|
|
&& record->txt_data[record->txt_offset] != ':')
|
|
record->txt_offset++;
|
|
if (record->txt_offset == record->txt_length)
|
|
return false;
|
|
|
|
/* number of characters needed for len, addr and type entries */
|
|
record->txt_offset++;
|
|
if (record->txt_offset + 8 > record->txt_length) {
|
|
record->error = true;
|
|
return false;
|
|
}
|
|
|
|
record->len = usb6fire_fw_ihex_hex(record->txt_data +
|
|
record->txt_offset, &crc);
|
|
record->txt_offset += 2;
|
|
record->address = usb6fire_fw_ihex_hex(record->txt_data +
|
|
record->txt_offset, &crc) << 8;
|
|
record->txt_offset += 2;
|
|
record->address |= usb6fire_fw_ihex_hex(record->txt_data +
|
|
record->txt_offset, &crc);
|
|
record->txt_offset += 2;
|
|
type = usb6fire_fw_ihex_hex(record->txt_data +
|
|
record->txt_offset, &crc);
|
|
record->txt_offset += 2;
|
|
|
|
/* number of characters needed for data and crc entries */
|
|
if (record->txt_offset + 2 * (record->len + 1) > record->txt_length) {
|
|
record->error = true;
|
|
return false;
|
|
}
|
|
for (i = 0; i < record->len; i++) {
|
|
record->data[i] = usb6fire_fw_ihex_hex(record->txt_data
|
|
+ record->txt_offset, &crc);
|
|
record->txt_offset += 2;
|
|
}
|
|
usb6fire_fw_ihex_hex(record->txt_data + record->txt_offset, &crc);
|
|
if (crc) {
|
|
record->error = true;
|
|
return false;
|
|
}
|
|
|
|
if (type == 1 || !record->len) /* eof */
|
|
return false;
|
|
else if (type == 0)
|
|
return true;
|
|
else {
|
|
record->error = true;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static int usb6fire_fw_ihex_init(const struct firmware *fw,
|
|
struct ihex_record *record)
|
|
{
|
|
record->txt_data = fw->data;
|
|
record->txt_length = fw->size;
|
|
record->txt_offset = 0;
|
|
record->max_len = 0;
|
|
/* read all records, if loop ends, record->error indicates,
|
|
* whether ihex is valid. */
|
|
while (usb6fire_fw_ihex_next_record(record))
|
|
record->max_len = max(record->len, record->max_len);
|
|
if (record->error)
|
|
return -EINVAL;
|
|
record->txt_offset = 0;
|
|
return 0;
|
|
}
|
|
|
|
static int usb6fire_fw_ezusb_write(struct usb_device *device,
|
|
int type, int value, char *data, int len)
|
|
{
|
|
int ret;
|
|
|
|
ret = usb_control_msg(device, usb_sndctrlpipe(device, 0), type,
|
|
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
value, 0, data, len, HZ);
|
|
if (ret < 0)
|
|
return ret;
|
|
else if (ret != len)
|
|
return -EIO;
|
|
return 0;
|
|
}
|
|
|
|
static int usb6fire_fw_ezusb_read(struct usb_device *device,
|
|
int type, int value, char *data, int len)
|
|
{
|
|
int ret = usb_control_msg(device, usb_rcvctrlpipe(device, 0), type,
|
|
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value,
|
|
0, data, len, HZ);
|
|
if (ret < 0)
|
|
return ret;
|
|
else if (ret != len)
|
|
return -EIO;
|
|
return 0;
|
|
}
|
|
|
|
static int usb6fire_fw_fpga_write(struct usb_device *device,
|
|
char *data, int len)
|
|
{
|
|
int actual_len;
|
|
int ret;
|
|
|
|
ret = usb_bulk_msg(device, usb_sndbulkpipe(device, FPGA_EP), data, len,
|
|
&actual_len, HZ);
|
|
if (ret < 0)
|
|
return ret;
|
|
else if (actual_len != len)
|
|
return -EIO;
|
|
return 0;
|
|
}
|
|
|
|
static int usb6fire_fw_ezusb_upload(
|
|
struct usb_interface *intf, const char *fwname,
|
|
unsigned int postaddr, u8 *postdata, unsigned int postlen)
|
|
{
|
|
int ret;
|
|
u8 data;
|
|
struct usb_device *device = interface_to_usbdev(intf);
|
|
const struct firmware *fw = NULL;
|
|
struct ihex_record *rec = kmalloc(sizeof(struct ihex_record),
|
|
GFP_KERNEL);
|
|
|
|
if (!rec)
|
|
return -ENOMEM;
|
|
|
|
ret = request_firmware(&fw, fwname, &device->dev);
|
|
if (ret < 0) {
|
|
kfree(rec);
|
|
dev_err(&intf->dev,
|
|
"error requesting ezusb firmware %s.\n", fwname);
|
|
return ret;
|
|
}
|
|
ret = usb6fire_fw_ihex_init(fw, rec);
|
|
if (ret < 0) {
|
|
kfree(rec);
|
|
release_firmware(fw);
|
|
dev_err(&intf->dev,
|
|
"error validating ezusb firmware %s.\n", fwname);
|
|
return ret;
|
|
}
|
|
/* upload firmware image */
|
|
data = 0x01; /* stop ezusb cpu */
|
|
ret = usb6fire_fw_ezusb_write(device, 0xa0, 0xe600, &data, 1);
|
|
if (ret < 0) {
|
|
kfree(rec);
|
|
release_firmware(fw);
|
|
dev_err(&intf->dev,
|
|
"unable to upload ezusb firmware %s: begin message.\n",
|
|
fwname);
|
|
return ret;
|
|
}
|
|
|
|
while (usb6fire_fw_ihex_next_record(rec)) { /* write firmware */
|
|
ret = usb6fire_fw_ezusb_write(device, 0xa0, rec->address,
|
|
rec->data, rec->len);
|
|
if (ret < 0) {
|
|
kfree(rec);
|
|
release_firmware(fw);
|
|
dev_err(&intf->dev,
|
|
"unable to upload ezusb firmware %s: data urb.\n",
|
|
fwname);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
release_firmware(fw);
|
|
kfree(rec);
|
|
if (postdata) { /* write data after firmware has been uploaded */
|
|
ret = usb6fire_fw_ezusb_write(device, 0xa0, postaddr,
|
|
postdata, postlen);
|
|
if (ret < 0) {
|
|
dev_err(&intf->dev,
|
|
"unable to upload ezusb firmware %s: post urb.\n",
|
|
fwname);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
data = 0x00; /* resume ezusb cpu */
|
|
ret = usb6fire_fw_ezusb_write(device, 0xa0, 0xe600, &data, 1);
|
|
if (ret < 0) {
|
|
dev_err(&intf->dev,
|
|
"unable to upload ezusb firmware %s: end message.\n",
|
|
fwname);
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int usb6fire_fw_fpga_upload(
|
|
struct usb_interface *intf, const char *fwname)
|
|
{
|
|
int ret;
|
|
int i;
|
|
struct usb_device *device = interface_to_usbdev(intf);
|
|
u8 *buffer = kmalloc(FPGA_BUFSIZE, GFP_KERNEL);
|
|
const char *c;
|
|
const char *end;
|
|
const struct firmware *fw;
|
|
|
|
if (!buffer)
|
|
return -ENOMEM;
|
|
|
|
ret = request_firmware(&fw, fwname, &device->dev);
|
|
if (ret < 0) {
|
|
dev_err(&intf->dev, "unable to get fpga firmware %s.\n",
|
|
fwname);
|
|
kfree(buffer);
|
|
return -EIO;
|
|
}
|
|
|
|
c = fw->data;
|
|
end = fw->data + fw->size;
|
|
|
|
ret = usb6fire_fw_ezusb_write(device, 8, 0, NULL, 0);
|
|
if (ret < 0) {
|
|
kfree(buffer);
|
|
release_firmware(fw);
|
|
dev_err(&intf->dev,
|
|
"unable to upload fpga firmware: begin urb.\n");
|
|
return ret;
|
|
}
|
|
|
|
while (c != end) {
|
|
for (i = 0; c != end && i < FPGA_BUFSIZE; i++, c++)
|
|
buffer[i] = bitrev8((u8)*c);
|
|
|
|
ret = usb6fire_fw_fpga_write(device, buffer, i);
|
|
if (ret < 0) {
|
|
release_firmware(fw);
|
|
kfree(buffer);
|
|
dev_err(&intf->dev,
|
|
"unable to upload fpga firmware: fw urb.\n");
|
|
return ret;
|
|
}
|
|
}
|
|
release_firmware(fw);
|
|
kfree(buffer);
|
|
|
|
ret = usb6fire_fw_ezusb_write(device, 9, 0, NULL, 0);
|
|
if (ret < 0) {
|
|
dev_err(&intf->dev,
|
|
"unable to upload fpga firmware: end urb.\n");
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* check, if the firmware version the devices has currently loaded
|
|
* is known by this driver. 'version' needs to have 4 bytes version
|
|
* info data. */
|
|
static int usb6fire_fw_check(struct usb_interface *intf, const u8 *version)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(known_fw_versions); i++)
|
|
if (!memcmp(version, known_fw_versions + i, 2))
|
|
return 0;
|
|
|
|
dev_err(&intf->dev, "invalid firmware version in device: %4ph. "
|
|
"please reconnect to power. if this failure "
|
|
"still happens, check your firmware installation.",
|
|
version);
|
|
return -EINVAL;
|
|
}
|
|
|
|
int usb6fire_fw_init(struct usb_interface *intf)
|
|
{
|
|
int i;
|
|
int ret;
|
|
struct usb_device *device = interface_to_usbdev(intf);
|
|
/* buffer: 8 receiving bytes from device and
|
|
* sizeof(EP_W_MAX_PACKET_SIZE) bytes for non-const copy */
|
|
u8 buffer[12];
|
|
|
|
ret = usb6fire_fw_ezusb_read(device, 1, 0, buffer, 8);
|
|
if (ret < 0) {
|
|
dev_err(&intf->dev,
|
|
"unable to receive device firmware state.\n");
|
|
return ret;
|
|
}
|
|
if (buffer[0] != 0xeb || buffer[1] != 0xaa || buffer[2] != 0x55) {
|
|
dev_err(&intf->dev,
|
|
"unknown device firmware state received from device:");
|
|
for (i = 0; i < 8; i++)
|
|
printk(KERN_CONT "%02x ", buffer[i]);
|
|
printk(KERN_CONT "\n");
|
|
return -EIO;
|
|
}
|
|
/* do we need fpga loader ezusb firmware? */
|
|
if (buffer[3] == 0x01) {
|
|
ret = usb6fire_fw_ezusb_upload(intf,
|
|
"6fire/dmx6firel2.ihx", 0, NULL, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
return FW_NOT_READY;
|
|
}
|
|
/* do we need fpga firmware and application ezusb firmware? */
|
|
else if (buffer[3] == 0x02) {
|
|
ret = usb6fire_fw_check(intf, buffer + 4);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = usb6fire_fw_fpga_upload(intf, "6fire/dmx6firecf.bin");
|
|
if (ret < 0)
|
|
return ret;
|
|
memcpy(buffer, ep_w_max_packet_size,
|
|
sizeof(ep_w_max_packet_size));
|
|
ret = usb6fire_fw_ezusb_upload(intf, "6fire/dmx6fireap.ihx",
|
|
0x0003, buffer, sizeof(ep_w_max_packet_size));
|
|
if (ret < 0)
|
|
return ret;
|
|
return FW_NOT_READY;
|
|
}
|
|
/* all fw loaded? */
|
|
else if (buffer[3] == 0x03)
|
|
return usb6fire_fw_check(intf, buffer + 4);
|
|
/* unknown data? */
|
|
else {
|
|
dev_err(&intf->dev,
|
|
"unknown device firmware state received from device: ");
|
|
for (i = 0; i < 8; i++)
|
|
printk(KERN_CONT "%02x ", buffer[i]);
|
|
printk(KERN_CONT "\n");
|
|
return -EIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|