diff options
Diffstat (limited to 'sound/usb/6fire/firmware.c')
| -rw-r--r-- | sound/usb/6fire/firmware.c | 426 |
1 files changed, 426 insertions, 0 deletions
diff --git a/sound/usb/6fire/firmware.c b/sound/usb/6fire/firmware.c new file mode 100644 index 00000000000..9081a54a9c6 --- /dev/null +++ b/sound/usb/6fire/firmware.c @@ -0,0 +1,426 @@ +/* + * Linux driver for TerraTec DMX 6Fire USB + * + * Firmware loader + * + * Currently not working for all devices. To be able to use the device + * in linux, it is also possible to let the windows driver upload the firmware. + * For that, start the computer in windows and reboot. + * As long as the device is connected to the power supply, no firmware reload + * needs to be performed. + * + * Author: Torsten Schenk <torsten.schenk@zoho.com> + * Created: Jan 01, 2011 + * Version: 0.3.0 + * 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 "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 +}; + +static const u8 BIT_REVERSE_TABLE[256] = { + 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, 0x10, 0x90, 0x50, + 0xd0, 0x30, 0xb0, 0x70, 0xf0, 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, + 0x68, 0xe8, 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8, 0x04, + 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4, 0x14, 0x94, 0x54, 0xd4, + 0x34, 0xb4, 0x74, 0xf4, 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, + 0xec, 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc, 0x02, 0x82, + 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, 0x12, 0x92, 0x52, 0xd2, 0x32, + 0xb2, 0x72, 0xf2, 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, + 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa, 0x06, 0x86, 0x46, + 0xc6, 0x26, 0xa6, 0x66, 0xe6, 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, + 0x76, 0xf6, 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee, 0x1e, + 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe, 0x01, 0x81, 0x41, 0xc1, + 0x21, 0xa1, 0x61, 0xe1, 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, + 0xf1, 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, 0x19, 0x99, + 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9, 0x05, 0x85, 0x45, 0xc5, 0x25, + 0xa5, 0x65, 0xe5, 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5, + 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed, 0x1d, 0x9d, 0x5d, + 0xdd, 0x3d, 0xbd, 0x7d, 0xfd, 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, + 0x63, 0xe3, 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3, 0x0b, + 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, 0x1b, 0x9b, 0x5b, 0xdb, + 0x3b, 0xbb, 0x7b, 0xfb, 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, + 0xe7, 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7, 0x0f, 0x8f, + 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, + 0xbf, 0x7f, 0xff }; + +/* + * 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) */ +}; + +struct ihex_record { + u16 address; + u8 len; + u8 data[256]; + char error; /* true if an error occured 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_nibble(const u8 n) +{ + if (n >= '0' && n <= '9') + return n - '0'; + else if (n >= 'A' && n <= 'F') + return n - ('A' - 10); + else if (n >= 'a' && n <= 'f') + return n - ('a' - 10); + return 0; +} + +static u8 usb6fire_fw_ihex_hex(const u8 *data, u8 *crc) +{ + u8 val = (usb6fire_fw_ihex_nibble(data[0]) << 4) | + usb6fire_fw_ihex_nibble(data[1]); + *crc += val; + return val; +} + +/* + * returns true if record is available, false otherwise. + * iff an error occured, 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 = 0; + 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); + snd_printk(KERN_ERR PREFIX "error requesting ezusb " + "firmware %s.\n", fwname); + return ret; + } + ret = usb6fire_fw_ihex_init(fw, rec); + if (ret < 0) { + kfree(rec); + snd_printk(KERN_ERR PREFIX "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); + snd_printk(KERN_ERR PREFIX "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); + snd_printk(KERN_ERR PREFIX "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) { + snd_printk(KERN_ERR PREFIX "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) { + release_firmware(fw); + snd_printk(KERN_ERR PREFIX "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) { + snd_printk(KERN_ERR PREFIX "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); + snd_printk(KERN_ERR PREFIX "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] = BIT_REVERSE_TABLE[(u8) *c]; + + ret = usb6fire_fw_fpga_write(device, buffer, i); + if (ret < 0) { + release_firmware(fw); + kfree(buffer); + snd_printk(KERN_ERR PREFIX "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) { + snd_printk(KERN_ERR PREFIX "unable to upload fpga firmware: " + "end urb.\n"); + return ret; + } + return 0; +} + +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) { + snd_printk(KERN_ERR PREFIX "unable to receive device " + "firmware state.\n"); + return ret; + } + if (buffer[0] != 0xeb || buffer[1] != 0xaa || buffer[2] != 0x55 + || buffer[4] != 0x03 || buffer[5] != 0x01 || buffer[7] + != 0x00) { + snd_printk(KERN_ERR PREFIX "unknown device firmware state " + "received from device: "); + for (i = 0; i < 8; i++) + snd_printk("%02x ", buffer[i]); + snd_printk("\n"); + return -EIO; + } + /* do we need fpga loader ezusb firmware? */ + if (buffer[3] == 0x01 && buffer[6] == 0x19) { + 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 && buffer[6] == 0x0b) { + 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 && buffer[6] == 0x0b) + return 0; + /* unknown data? */ + else { + snd_printk(KERN_ERR PREFIX "unknown device firmware state " + "received from device: "); + for (i = 0; i < 8; i++) + snd_printk("%02x ", buffer[i]); + snd_printk("\n"); + return -EIO; + } + return 0; +} + |