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d47333ddb2
Check only the uppermost 16 bits instead of the whole 32 bits of the version information. Do this because all firmware version tested with this version information worked correctly and the strict check causes problems for several users. Signed-off-by: Torsten Schenk <torsten.schenk@zoho.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
418 lines
10 KiB
C
418 lines
10 KiB
C
/*
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* Linux driver for TerraTec DMX 6Fire USB
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*
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* Firmware loader
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*
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* Author: Torsten Schenk <torsten.schenk@zoho.com>
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* Created: Jan 01, 2011
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* Copyright: (C) Torsten Schenk
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/firmware.h>
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#include <linux/module.h>
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#include <linux/bitrev.h>
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#include <linux/kernel.h>
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#include "firmware.h"
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#include "chip.h"
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MODULE_FIRMWARE("6fire/dmx6firel2.ihx");
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MODULE_FIRMWARE("6fire/dmx6fireap.ihx");
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MODULE_FIRMWARE("6fire/dmx6firecf.bin");
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enum {
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FPGA_BUFSIZE = 512, FPGA_EP = 2
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};
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/*
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* wMaxPacketSize of pcm endpoints.
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* keep synced with rates_in_packet_size and rates_out_packet_size in pcm.c
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* fpp: frames per isopacket
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*
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* CAUTION: keep sizeof <= buffer[] in usb6fire_fw_init
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*/
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static const u8 ep_w_max_packet_size[] = {
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0xe4, 0x00, 0xe4, 0x00, /* alt 1: 228 EP2 and EP6 (7 fpp) */
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0xa4, 0x01, 0xa4, 0x01, /* alt 2: 420 EP2 and EP6 (13 fpp)*/
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0x94, 0x01, 0x5c, 0x02 /* alt 3: 404 EP2 and 604 EP6 (25 fpp) */
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};
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static const u8 known_fw_versions[][2] = {
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{ 0x03, 0x01 }
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};
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struct ihex_record {
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u16 address;
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u8 len;
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u8 data[256];
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char error; /* true if an error occurred parsing this record */
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u8 max_len; /* maximum record length in whole ihex */
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/* private */
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const char *txt_data;
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unsigned int txt_length;
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unsigned int txt_offset; /* current position in txt_data */
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};
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static u8 usb6fire_fw_ihex_hex(const u8 *data, u8 *crc)
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{
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u8 val = 0;
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int hval;
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hval = hex_to_bin(data[0]);
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if (hval >= 0)
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val |= (hval << 4);
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hval = hex_to_bin(data[1]);
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if (hval >= 0)
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val |= hval;
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*crc += val;
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return val;
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}
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/*
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* returns true if record is available, false otherwise.
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* iff an error occurred, false will be returned and record->error will be true.
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*/
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static bool usb6fire_fw_ihex_next_record(struct ihex_record *record)
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{
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u8 crc = 0;
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u8 type;
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int i;
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record->error = false;
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/* find begin of record (marked by a colon) */
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while (record->txt_offset < record->txt_length
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&& record->txt_data[record->txt_offset] != ':')
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record->txt_offset++;
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if (record->txt_offset == record->txt_length)
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return false;
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/* number of characters needed for len, addr and type entries */
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record->txt_offset++;
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if (record->txt_offset + 8 > record->txt_length) {
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record->error = true;
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return false;
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}
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record->len = usb6fire_fw_ihex_hex(record->txt_data +
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record->txt_offset, &crc);
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record->txt_offset += 2;
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record->address = usb6fire_fw_ihex_hex(record->txt_data +
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record->txt_offset, &crc) << 8;
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record->txt_offset += 2;
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record->address |= usb6fire_fw_ihex_hex(record->txt_data +
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record->txt_offset, &crc);
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record->txt_offset += 2;
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type = usb6fire_fw_ihex_hex(record->txt_data +
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record->txt_offset, &crc);
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record->txt_offset += 2;
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/* number of characters needed for data and crc entries */
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if (record->txt_offset + 2 * (record->len + 1) > record->txt_length) {
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record->error = true;
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return false;
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}
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for (i = 0; i < record->len; i++) {
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record->data[i] = usb6fire_fw_ihex_hex(record->txt_data
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+ record->txt_offset, &crc);
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record->txt_offset += 2;
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}
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usb6fire_fw_ihex_hex(record->txt_data + record->txt_offset, &crc);
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if (crc) {
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record->error = true;
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return false;
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}
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if (type == 1 || !record->len) /* eof */
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return false;
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else if (type == 0)
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return true;
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else {
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record->error = true;
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return false;
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}
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}
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static int usb6fire_fw_ihex_init(const struct firmware *fw,
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struct ihex_record *record)
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{
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record->txt_data = fw->data;
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record->txt_length = fw->size;
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record->txt_offset = 0;
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record->max_len = 0;
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/* read all records, if loop ends, record->error indicates,
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* whether ihex is valid. */
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while (usb6fire_fw_ihex_next_record(record))
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record->max_len = max(record->len, record->max_len);
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if (record->error)
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return -EINVAL;
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record->txt_offset = 0;
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return 0;
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}
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static int usb6fire_fw_ezusb_write(struct usb_device *device,
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int type, int value, char *data, int len)
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{
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int ret;
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ret = usb_control_msg(device, usb_sndctrlpipe(device, 0), type,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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value, 0, data, len, HZ);
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if (ret < 0)
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return ret;
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else if (ret != len)
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return -EIO;
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return 0;
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}
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static int usb6fire_fw_ezusb_read(struct usb_device *device,
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int type, int value, char *data, int len)
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{
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int ret = usb_control_msg(device, usb_rcvctrlpipe(device, 0), type,
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USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value,
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0, data, len, HZ);
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if (ret < 0)
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return ret;
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else if (ret != len)
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return -EIO;
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return 0;
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}
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static int usb6fire_fw_fpga_write(struct usb_device *device,
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char *data, int len)
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{
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int actual_len;
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int ret;
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ret = usb_bulk_msg(device, usb_sndbulkpipe(device, FPGA_EP), data, len,
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&actual_len, HZ);
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if (ret < 0)
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return ret;
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else if (actual_len != len)
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return -EIO;
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return 0;
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}
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static int usb6fire_fw_ezusb_upload(
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struct usb_interface *intf, const char *fwname,
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unsigned int postaddr, u8 *postdata, unsigned int postlen)
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{
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int ret;
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u8 data;
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struct usb_device *device = interface_to_usbdev(intf);
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const struct firmware *fw = NULL;
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struct ihex_record *rec = kmalloc(sizeof(struct ihex_record),
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GFP_KERNEL);
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if (!rec)
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return -ENOMEM;
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ret = request_firmware(&fw, fwname, &device->dev);
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if (ret < 0) {
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kfree(rec);
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snd_printk(KERN_ERR PREFIX "error requesting ezusb "
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"firmware %s.\n", fwname);
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return ret;
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}
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ret = usb6fire_fw_ihex_init(fw, rec);
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if (ret < 0) {
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kfree(rec);
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release_firmware(fw);
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snd_printk(KERN_ERR PREFIX "error validating ezusb "
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"firmware %s.\n", fwname);
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return ret;
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}
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/* upload firmware image */
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data = 0x01; /* stop ezusb cpu */
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ret = usb6fire_fw_ezusb_write(device, 0xa0, 0xe600, &data, 1);
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if (ret < 0) {
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kfree(rec);
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release_firmware(fw);
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snd_printk(KERN_ERR PREFIX "unable to upload ezusb "
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"firmware %s: begin message.\n", fwname);
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return ret;
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}
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while (usb6fire_fw_ihex_next_record(rec)) { /* write firmware */
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ret = usb6fire_fw_ezusb_write(device, 0xa0, rec->address,
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rec->data, rec->len);
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if (ret < 0) {
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kfree(rec);
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release_firmware(fw);
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snd_printk(KERN_ERR PREFIX "unable to upload ezusb "
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"firmware %s: data urb.\n", fwname);
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return ret;
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}
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}
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release_firmware(fw);
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kfree(rec);
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if (postdata) { /* write data after firmware has been uploaded */
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ret = usb6fire_fw_ezusb_write(device, 0xa0, postaddr,
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postdata, postlen);
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if (ret < 0) {
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snd_printk(KERN_ERR PREFIX "unable to upload ezusb "
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"firmware %s: post urb.\n", fwname);
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return ret;
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}
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}
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data = 0x00; /* resume ezusb cpu */
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ret = usb6fire_fw_ezusb_write(device, 0xa0, 0xe600, &data, 1);
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if (ret < 0) {
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snd_printk(KERN_ERR PREFIX "unable to upload ezusb "
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"firmware %s: end message.\n", fwname);
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return ret;
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}
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return 0;
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}
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static int usb6fire_fw_fpga_upload(
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struct usb_interface *intf, const char *fwname)
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{
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int ret;
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int i;
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struct usb_device *device = interface_to_usbdev(intf);
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u8 *buffer = kmalloc(FPGA_BUFSIZE, GFP_KERNEL);
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const char *c;
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const char *end;
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const struct firmware *fw;
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if (!buffer)
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return -ENOMEM;
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ret = request_firmware(&fw, fwname, &device->dev);
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if (ret < 0) {
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snd_printk(KERN_ERR PREFIX "unable to get fpga firmware %s.\n",
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fwname);
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kfree(buffer);
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return -EIO;
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}
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c = fw->data;
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end = fw->data + fw->size;
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ret = usb6fire_fw_ezusb_write(device, 8, 0, NULL, 0);
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if (ret < 0) {
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kfree(buffer);
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release_firmware(fw);
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snd_printk(KERN_ERR PREFIX "unable to upload fpga firmware: "
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"begin urb.\n");
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return ret;
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}
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while (c != end) {
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for (i = 0; c != end && i < FPGA_BUFSIZE; i++, c++)
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buffer[i] = byte_rev_table[(u8) *c];
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ret = usb6fire_fw_fpga_write(device, buffer, i);
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if (ret < 0) {
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release_firmware(fw);
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kfree(buffer);
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snd_printk(KERN_ERR PREFIX "unable to upload fpga "
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"firmware: fw urb.\n");
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return ret;
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}
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}
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release_firmware(fw);
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kfree(buffer);
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ret = usb6fire_fw_ezusb_write(device, 9, 0, NULL, 0);
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if (ret < 0) {
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snd_printk(KERN_ERR PREFIX "unable to upload fpga firmware: "
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"end urb.\n");
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return ret;
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}
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return 0;
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}
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/* check, if the firmware version the devices has currently loaded
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* is known by this driver. 'version' needs to have 4 bytes version
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* info data. */
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static int usb6fire_fw_check(u8 *version)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(known_fw_versions); i++)
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if (!memcmp(version, known_fw_versions + i, 2))
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return 0;
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snd_printk(KERN_ERR PREFIX "invalid fimware version in device: %*ph. "
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"please reconnect to power. if this failure "
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"still happens, check your firmware installation.",
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4, version);
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return -EINVAL;
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}
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int usb6fire_fw_init(struct usb_interface *intf)
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{
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int i;
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int ret;
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struct usb_device *device = interface_to_usbdev(intf);
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/* buffer: 8 receiving bytes from device and
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* sizeof(EP_W_MAX_PACKET_SIZE) bytes for non-const copy */
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u8 buffer[12];
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ret = usb6fire_fw_ezusb_read(device, 1, 0, buffer, 8);
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if (ret < 0) {
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snd_printk(KERN_ERR PREFIX "unable to receive device "
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"firmware state.\n");
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return ret;
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}
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if (buffer[0] != 0xeb || buffer[1] != 0xaa || buffer[2] != 0x55) {
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snd_printk(KERN_ERR PREFIX "unknown device firmware state "
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"received from device: ");
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for (i = 0; i < 8; i++)
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snd_printk("%02x ", buffer[i]);
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snd_printk("\n");
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return -EIO;
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}
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/* do we need fpga loader ezusb firmware? */
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if (buffer[3] == 0x01) {
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ret = usb6fire_fw_ezusb_upload(intf,
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"6fire/dmx6firel2.ihx", 0, NULL, 0);
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if (ret < 0)
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return ret;
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return FW_NOT_READY;
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}
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/* do we need fpga firmware and application ezusb firmware? */
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else if (buffer[3] == 0x02) {
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ret = usb6fire_fw_check(buffer + 4);
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if (ret < 0)
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return ret;
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ret = usb6fire_fw_fpga_upload(intf, "6fire/dmx6firecf.bin");
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if (ret < 0)
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return ret;
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memcpy(buffer, ep_w_max_packet_size,
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sizeof(ep_w_max_packet_size));
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ret = usb6fire_fw_ezusb_upload(intf, "6fire/dmx6fireap.ihx",
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0x0003, buffer, sizeof(ep_w_max_packet_size));
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if (ret < 0)
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return ret;
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return FW_NOT_READY;
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}
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/* all fw loaded? */
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else if (buffer[3] == 0x03)
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return usb6fire_fw_check(buffer + 4);
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/* unknown data? */
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else {
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snd_printk(KERN_ERR PREFIX "unknown device firmware state "
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"received from device: ");
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for (i = 0; i < 8; i++)
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snd_printk("%02x ", buffer[i]);
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snd_printk("\n");
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return -EIO;
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}
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return 0;
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}
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