/*
* Firmware Loaderfor Digigram pcxhr compatible soundcards
*
* Copyright (c) 2004 by Digigram <alsa@digigram.com>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <getopt.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <assert.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <stdarg.h>
#include <alsa/asoundlib.h>
#define PROGNAME "pcxhrloader"
/* max. number of cards (shouldn't be in the public header?) */
#define SND_CARDS 8
static int verbose = 0;
static void usage(void)
{
printf("Boot loader for Digigram pcxhr compatible cards\n");
printf("version %s\n", VERSION);
printf("usage: pcxhrloader [-c card] [-D device]\n");
}
static void error(const char *fmt, ...)
{
if (verbose) {
va_list ap;
va_start(ap, fmt);
fprintf(stderr, "%s: ", PROGNAME);
vfprintf(stderr, fmt, ap);
va_end(ap);
}
}
/*
* parse the index file and get the file to read from the key
*/
#define MAX_PATH 128
static int get_file_name(const char *key, unsigned int idx, char *fname)
{
FILE *fp;
char buf[128];
char temp[32], *p;
int len;
snprintf(buf, sizeof(buf), "%s/%s.conf", DATAPATH, key);
if ((fp = fopen(buf, "r")) == NULL) {
error("cannot open the index file %s\n", buf);
return -ENODEV;
}
sprintf(temp, "dsp%d", idx);
len = strlen(temp);
while (fgets(buf, sizeof(buf), fp)) {
if (strncmp(buf, temp, len))
continue;
for (p = buf + len; *p && isspace(*p); p++)
;
if (*p == '/') {
strncpy(fname, p, MAX_PATH);
} else {
snprintf(fname, MAX_PATH, "%s/%s", DATAPATH, p);
}
fname[MAX_PATH-1] = 0;
/* chop the last linefeed */
for (p = fname; *p && *p != '\n'; p++)
;
*p = 0;
fclose(fp);
return 0;
}
fclose(fp);
error("cannot find the file entry for %s\n", temp);
return -ENODEV;
}
/*
* read and transfer the firmware binary
*/
static int load_firmware(snd_hwdep_t *hw, const char *id, unsigned int idx)
{
int err;
char fname[MAX_PATH];
snd_hwdep_dsp_image_t *dsp;
struct stat st;
int fd, length;
unsigned char *imgbuf;
if (get_file_name(id, idx, fname) < 0)
return -EINVAL;
snd_hwdep_dsp_image_alloca(&dsp);
snd_hwdep_dsp_image_set_name(dsp, fname);
if (stat(fname, &st) < 0) {
error("cannot call stat %s\n", fname);
return -ENODEV;
}
length = st.st_size;
if (length == 0) {
error("zero file size %s\n", fname);
return -EINVAL;
}
imgbuf = malloc(st.st_size);
if (! imgbuf) {
error("cannot malloc %d bytes\n", length);
return -ENOMEM;
}
snd_hwdep_dsp_image_set_length(dsp, length);
snd_hwdep_dsp_image_set_image(dsp, imgbuf);
fd = open(fname, O_RDONLY);
if (fd < 0) {
error("cannot open %s\n", fname);
return -ENODEV;
}
if (read(fd, imgbuf, length) != length) {
error("cannot read %d bytes from %s\n", length, fname);
close(fd);
return -EINVAL;
}
close(fd);
snd_hwdep_dsp_image_set_index(dsp, idx);
err = snd_hwdep_dsp_load(hw, dsp);
if (err < 0)
error("error in loading %s\n", fname);
printf("%s loaded (%d bytes).\n",fname,length);
return err;
}
/*
* check the name id of the given hwdep handle
*/
static int check_hwinfo(snd_hwdep_t *hw, const char *id)
{
snd_hwdep_info_t *info;
int err;
snd_hwdep_info_alloca(&info);
if ((err = snd_hwdep_info(hw, info)) < 0)
return err;
if (strcmp(snd_hwdep_info_get_id(info), id))
return -ENODEV;
return 0; /* ok */
}
/*
* load the firmware binaries
*/
static int pcxhr_boot(const char *devname)
{
snd_hwdep_t *hw;
const char *id;
int err;
unsigned int idx, dsps, loaded;
snd_hwdep_dsp_status_t *stat;
if ((err = snd_hwdep_open(&hw, devname, O_RDWR)) < 0) {
error("cannot open hwdep %s\n", devname);
return err;
}
/* check hwdep ID string */
if (check_hwinfo(hw, "pcxhr loader") < 0) {
error("invalid hwdep ID string %s\n", devname);
snd_hwdep_close(hw);
return -ENODEV;
}
snd_hwdep_dsp_status_alloca(&stat);
/* get the current status (number of files to load = 5)*/
if ((err = snd_hwdep_dsp_status(hw, stat)) < 0) {
printf("cannot get version for %s\n", devname);
snd_hwdep_close(hw);
return err;
}
if (snd_hwdep_dsp_status_get_chip_ready(stat))
{
printf("nothing to do for device %s.\n", devname);
return 0; /* already loaded */
}
/* get "pcxhr" string */
id = snd_hwdep_dsp_status_get_id(stat);
dsps = snd_hwdep_dsp_status_get_num_dsps(stat);
loaded = snd_hwdep_dsp_status_get_dsp_loaded(stat);
for (idx = 0; idx < dsps; idx++) {
if (loaded & (1 << idx))
{
printf("%d already loaded (loaded = %d).\n", idx, loaded);
continue;
}
if ((err = load_firmware(hw, id, idx)) < 0) {
snd_hwdep_close(hw);
return err;
}
}
snd_hwdep_close(hw);
return 0;
}
int main(int argc, char **argv)
{
int c;
int card = -1;
char *device_name = NULL;
char name[64];
while ((c = getopt(argc, argv, "c:D:")) != -1) {
switch (c) {
case 'c':
card = atoi(optarg);
break;
case 'D':
device_name = optarg;
break;
default:
usage();
return 1;
}
}
if (device_name) {
verbose = 1;
return pcxhr_boot(device_name) != 0;
}
if (card >= 0) {
sprintf(name, "hw:%d", card);
verbose = 1;
return pcxhr_boot(name) != 0;
}
/* probe the all cards */
for (c = 0; c < SND_CARDS; c++) {
sprintf(name, "hw:%d", c);
if (! pcxhr_boot(name))
card = c;
}
if (card < 0) {
fprintf(stderr, PROGNAME ": no pcxhr-compatible card found\n");
return 1;
}
return 0;
}