256 lines
7.6 KiB
C
256 lines
7.6 KiB
C
|
/*
|
|||
|
|
* Emagic EMI 2|6 usb audio interface firmware loader.
|
|||
|
|
* Copyright (C) 2002
|
|||
|
|
* Tapio Laxstr<EFBFBD>m (tapio.laxstrom@iptime.fi)
|
|||
|
|
*
|
|||
|
|
* 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, version 2.
|
|||
|
|
*
|
|||
|
|
* emi26.c,v 1.13 2002/03/08 13:10:26 tapio Exp
|
|||
|
|
*/
|
|||
|
|
#include <linux/kernel.h>
|
|||
|
|
#include <linux/errno.h>
|
|||
|
|
#include <linux/slab.h>
|
|||
|
|
#include <linux/module.h>
|
|||
|
|
#include <linux/init.h>
|
|||
|
|
#include <linux/usb.h>
|
|||
|
|
|
|||
|
|
#define MAX_INTEL_HEX_RECORD_LENGTH 16
|
|||
|
|
typedef struct _INTEL_HEX_RECORD
|
|||
|
|
{
|
|||
|
|
__u32 length;
|
|||
|
|
__u32 address;
|
|||
|
|
__u32 type;
|
|||
|
|
__u8 data[MAX_INTEL_HEX_RECORD_LENGTH];
|
|||
|
|
} INTEL_HEX_RECORD, *PINTEL_HEX_RECORD;
|
|||
|
|
|
|||
|
|
/* include firmware (variables) */
|
|||
|
|
#include "emi26_fw.h"
|
|||
|
|
|
|||
|
|
#define EMI26_VENDOR_ID 0x086a /* Emagic Soft-und Hardware GmBH */
|
|||
|
|
#define EMI26_PRODUCT_ID 0x0100 /* EMI 2|6 without firmware */
|
|||
|
|
#define EMI26B_PRODUCT_ID 0x0102 /* EMI 2|6 without firmware */
|
|||
|
|
|
|||
|
|
#define ANCHOR_LOAD_INTERNAL 0xA0 /* Vendor specific request code for Anchor Upload/Download (This one is implemented in the core) */
|
|||
|
|
#define ANCHOR_LOAD_EXTERNAL 0xA3 /* This command is not implemented in the core. Requires firmware */
|
|||
|
|
#define ANCHOR_LOAD_FPGA 0xA5 /* This command is not implemented in the core. Requires firmware. Emagic extension */
|
|||
|
|
#define MAX_INTERNAL_ADDRESS 0x1B3F /* This is the highest internal RAM address for the AN2131Q */
|
|||
|
|
#define CPUCS_REG 0x7F92 /* EZ-USB Control and Status Register. Bit 0 controls 8051 reset */
|
|||
|
|
#define INTERNAL_RAM(address) (address <= MAX_INTERNAL_ADDRESS)
|
|||
|
|
|
|||
|
|
static int emi26_writememory( struct usb_device *dev, int address, unsigned char *data, int length, __u8 bRequest);
|
|||
|
|
static int emi26_set_reset(struct usb_device *dev, unsigned char reset_bit);
|
|||
|
|
static int emi26_load_firmware (struct usb_device *dev);
|
|||
|
|
static int emi26_probe(struct usb_interface *intf, const struct usb_device_id *id);
|
|||
|
|
static void emi26_disconnect(struct usb_interface *intf);
|
|||
|
|
static int __init emi26_init (void);
|
|||
|
|
static void __exit emi26_exit (void);
|
|||
|
|
|
|||
|
|
|
|||
|
|
/* thanks to drivers/usb/serial/keyspan_pda.c code */
|
|||
|
|
static int emi26_writememory (struct usb_device *dev, int address, unsigned char *data, int length, __u8 request)
|
|||
|
|
{
|
|||
|
|
int result;
|
|||
|
|
unsigned char *buffer = kmalloc (length, GFP_KERNEL);
|
|||
|
|
|
|||
|
|
if (!buffer) {
|
|||
|
|
err("emi26: kmalloc(%d) failed.", length);
|
|||
|
|
return -ENOMEM;
|
|||
|
|
}
|
|||
|
|
memcpy (buffer, data, length);
|
|||
|
|
/* Note: usb_control_msg returns negative value on error or length of the
|
|||
|
|
* data that was written! */
|
|||
|
|
result = usb_control_msg (dev, usb_sndctrlpipe(dev, 0), request, 0x40, address, 0, buffer, length, 300);
|
|||
|
|
kfree (buffer);
|
|||
|
|
return result;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* thanks to drivers/usb/serial/keyspan_pda.c code */
|
|||
|
|
static int emi26_set_reset (struct usb_device *dev, unsigned char reset_bit)
|
|||
|
|
{
|
|||
|
|
int response;
|
|||
|
|
info("%s - %d", __FUNCTION__, reset_bit);
|
|||
|
|
/* printk(KERN_DEBUG "%s - %d", __FUNCTION__, reset_bit); */
|
|||
|
|
response = emi26_writememory (dev, CPUCS_REG, &reset_bit, 1, 0xa0);
|
|||
|
|
if (response < 0) {
|
|||
|
|
err("emi26: set_reset (%d) failed", reset_bit);
|
|||
|
|
}
|
|||
|
|
return response;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#define FW_LOAD_SIZE 1023
|
|||
|
|
|
|||
|
|
static int emi26_load_firmware (struct usb_device *dev)
|
|||
|
|
{
|
|||
|
|
int err;
|
|||
|
|
int i;
|
|||
|
|
int pos = 0; /* Position in hex record */
|
|||
|
|
__u32 addr; /* Address to write */
|
|||
|
|
__u8 *buf;
|
|||
|
|
|
|||
|
|
buf = kmalloc(FW_LOAD_SIZE, GFP_KERNEL);
|
|||
|
|
if (!buf) {
|
|||
|
|
err( "%s - error loading firmware: error = %d", __FUNCTION__, -ENOMEM);
|
|||
|
|
err = -ENOMEM;
|
|||
|
|
goto wraperr;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* Assert reset (stop the CPU in the EMI) */
|
|||
|
|
err = emi26_set_reset(dev,1);
|
|||
|
|
if (err < 0) {
|
|||
|
|
err( "%s - error loading firmware: error = %d", __FUNCTION__, err);
|
|||
|
|
goto wraperr;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* 1. We need to put the loader for the FPGA into the EZ-USB */
|
|||
|
|
for (i=0; g_Loader[i].type == 0; i++) {
|
|||
|
|
err = emi26_writememory(dev, g_Loader[i].address, g_Loader[i].data, g_Loader[i].length, ANCHOR_LOAD_INTERNAL);
|
|||
|
|
if (err < 0) {
|
|||
|
|
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
|
|||
|
|
goto wraperr;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* De-assert reset (let the CPU run) */
|
|||
|
|
err = emi26_set_reset(dev,0);
|
|||
|
|
|
|||
|
|
/* 2. We upload the FPGA firmware into the EMI
|
|||
|
|
* Note: collect up to 1023 (yes!) bytes and send them with
|
|||
|
|
* a single request. This is _much_ faster! */
|
|||
|
|
do {
|
|||
|
|
i = 0;
|
|||
|
|
addr = g_bitstream[pos].address;
|
|||
|
|
|
|||
|
|
/* intel hex records are terminated with type 0 element */
|
|||
|
|
while ((g_bitstream[pos].type == 0) && (i + g_bitstream[pos].length < FW_LOAD_SIZE)) {
|
|||
|
|
memcpy(buf + i, g_bitstream[pos].data, g_bitstream[pos].length);
|
|||
|
|
i += g_bitstream[pos].length;
|
|||
|
|
pos++;
|
|||
|
|
}
|
|||
|
|
err = emi26_writememory(dev, addr, buf, i, ANCHOR_LOAD_FPGA);
|
|||
|
|
if (err < 0) {
|
|||
|
|
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
|
|||
|
|
goto wraperr;
|
|||
|
|
}
|
|||
|
|
} while (i > 0);
|
|||
|
|
|
|||
|
|
/* Assert reset (stop the CPU in the EMI) */
|
|||
|
|
err = emi26_set_reset(dev,1);
|
|||
|
|
if (err < 0) {
|
|||
|
|
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
|
|||
|
|
goto wraperr;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* 3. We need to put the loader for the firmware into the EZ-USB (again...) */
|
|||
|
|
for (i=0; g_Loader[i].type == 0; i++) {
|
|||
|
|
err = emi26_writememory(dev, g_Loader[i].address, g_Loader[i].data, g_Loader[i].length, ANCHOR_LOAD_INTERNAL);
|
|||
|
|
if (err < 0) {
|
|||
|
|
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
|
|||
|
|
goto wraperr;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* De-assert reset (let the CPU run) */
|
|||
|
|
err = emi26_set_reset(dev,0);
|
|||
|
|
if (err < 0) {
|
|||
|
|
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
|
|||
|
|
goto wraperr;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* 4. We put the part of the firmware that lies in the external RAM into the EZ-USB */
|
|||
|
|
for (i=0; g_Firmware[i].type == 0; i++) {
|
|||
|
|
if (!INTERNAL_RAM(g_Firmware[i].address)) {
|
|||
|
|
err = emi26_writememory(dev, g_Firmware[i].address, g_Firmware[i].data, g_Firmware[i].length, ANCHOR_LOAD_EXTERNAL);
|
|||
|
|
if (err < 0) {
|
|||
|
|
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
|
|||
|
|
goto wraperr;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* Assert reset (stop the CPU in the EMI) */
|
|||
|
|
err = emi26_set_reset(dev,1);
|
|||
|
|
if (err < 0) {
|
|||
|
|
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
|
|||
|
|
goto wraperr;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
for (i=0; g_Firmware[i].type == 0; i++) {
|
|||
|
|
if (INTERNAL_RAM(g_Firmware[i].address)) {
|
|||
|
|
err = emi26_writememory(dev, g_Firmware[i].address, g_Firmware[i].data, g_Firmware[i].length, ANCHOR_LOAD_INTERNAL);
|
|||
|
|
if (err < 0) {
|
|||
|
|
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
|
|||
|
|
goto wraperr;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* De-assert reset (let the CPU run) */
|
|||
|
|
err = emi26_set_reset(dev,0);
|
|||
|
|
if (err < 0) {
|
|||
|
|
err("%s - error loading firmware: error = %d", __FUNCTION__, err);
|
|||
|
|
goto wraperr;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* return 1 to fail the driver inialization
|
|||
|
|
* and give real driver change to load */
|
|||
|
|
err = 1;
|
|||
|
|
|
|||
|
|
wraperr:
|
|||
|
|
kfree(buf);
|
|||
|
|
return err;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
static struct usb_device_id id_table [] = {
|
|||
|
|
{ USB_DEVICE(EMI26_VENDOR_ID, EMI26_PRODUCT_ID) },
|
|||
|
|
{ USB_DEVICE(EMI26_VENDOR_ID, EMI26B_PRODUCT_ID) },
|
|||
|
|
{ } /* Terminating entry */
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
MODULE_DEVICE_TABLE (usb, id_table);
|
|||
|
|
|
|||
|
|
static int emi26_probe(struct usb_interface *intf, const struct usb_device_id *id)
|
|||
|
|
{
|
|||
|
|
struct usb_device *dev = interface_to_usbdev(intf);
|
|||
|
|
|
|||
|
|
info("%s start", __FUNCTION__);
|
|||
|
|
|
|||
|
|
emi26_load_firmware(dev);
|
|||
|
|
|
|||
|
|
/* do not return the driver context, let real audio driver do that */
|
|||
|
|
return -EIO;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
static void emi26_disconnect(struct usb_interface *intf)
|
|||
|
|
{
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
static struct usb_driver emi26_driver = {
|
|||
|
|
.owner = THIS_MODULE,
|
|||
|
|
.name = "emi26 - firmware loader",
|
|||
|
|
.probe = emi26_probe,
|
|||
|
|
.disconnect = emi26_disconnect,
|
|||
|
|
.id_table = id_table,
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
static int __init emi26_init (void)
|
|||
|
|
{
|
|||
|
|
return usb_register(&emi26_driver);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
static void __exit emi26_exit (void)
|
|||
|
|
{
|
|||
|
|
usb_deregister (&emi26_driver);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
module_init(emi26_init);
|
|||
|
|
module_exit(emi26_exit);
|
|||
|
|
|
|||
|
|
MODULE_AUTHOR("tapio laxstr<74>m");
|
|||
|
|
MODULE_DESCRIPTION("Emagic EMI 2|6 firmware loader.");
|
|||
|
|
MODULE_LICENSE("GPL");
|
|||
|
|
|
|||
|
|
/* vi:ai:syntax=c:sw=8:ts=8:tw=80
|
|||
|
|
*/
|