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wavefront_synth.c
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wavefront_synth.c
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/* Copyright (C) by Paul Barton-Davis 1998-1999
*
* Some portions of this file are taken from work that is
* copyright (C) by Hannu Savolainen 1993-1996
*
* This program is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
* Version 2 (June 1991). See the "COPYING" file distributed with this software
* for more info.
*/
/*
* An ALSA lowlevel driver for Turtle Beach ICS2115 wavetable synth
* (Maui, Tropez, Tropez Plus)
*
* This driver supports the onboard wavetable synthesizer (an ICS2115),
* including patch, sample and program loading and unloading, conversion
* of GUS patches during loading, and full user-level access to all
* WaveFront commands. It tries to provide semi-intelligent patch and
* sample management as well.
*
*/
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/time.h>
#include <linux/wait.h>
#include <linux/sched/signal.h>
#include <linux/firmware.h>
#include <linux/moduleparam.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/snd_wavefront.h>
#include <sound/initval.h>
static int wf_raw = 0; /* we normally check for "raw state" to firmware
loading. if non-zero, then during driver loading, the
state of the board is ignored, and we reset the
board and load the firmware anyway.
*/
static int fx_raw = 1; /* if this is zero, we'll leave the FX processor in
whatever state it is when the driver is loaded.
The default is to download the microprogram and
associated coefficients to set it up for "default"
operation, whatever that means.
*/
static int debug_default = 0; /* you can set this to control debugging
during driver loading. it takes any combination
of the WF_DEBUG_* flags defined in
wavefront.h
*/
/* XXX this needs to be made firmware and hardware version dependent */
#define DEFAULT_OSPATH "wavefront.os"
static char *ospath = DEFAULT_OSPATH; /* the firmware file name */
static int wait_usecs = 150; /* This magic number seems to give pretty optimal
throughput based on my limited experimentation.
If you want to play around with it and find a better
value, be my guest. Remember, the idea is to
get a number that causes us to just busy wait
for as many WaveFront commands as possible, without
coming up with a number so large that we hog the
whole CPU.
Specifically, with this number, out of about 134,000
status waits, only about 250 result in a sleep.
*/
static int sleep_interval = 100; /* HZ/sleep_interval seconds per sleep */
static int sleep_tries = 50; /* number of times we'll try to sleep */
static int reset_time = 2; /* hundreths of a second we wait after a HW
reset for the expected interrupt.
*/
static int ramcheck_time = 20; /* time in seconds to wait while ROM code
checks on-board RAM.
*/
static int osrun_time = 10; /* time in seconds we wait for the OS to
start running.
*/
module_param(wf_raw, int, 0444);
MODULE_PARM_DESC(wf_raw, "if non-zero, assume that we need to boot the OS");
module_param(fx_raw, int, 0444);
MODULE_PARM_DESC(fx_raw, "if non-zero, assume that the FX process needs help");
module_param(debug_default, int, 0444);
MODULE_PARM_DESC(debug_default, "debug parameters for card initialization");
module_param(wait_usecs, int, 0444);
MODULE_PARM_DESC(wait_usecs, "how long to wait without sleeping, usecs");
module_param(sleep_interval, int, 0444);
MODULE_PARM_DESC(sleep_interval, "how long to sleep when waiting for reply");
module_param(sleep_tries, int, 0444);
MODULE_PARM_DESC(sleep_tries, "how many times to try sleeping during a wait");
module_param(ospath, charp, 0444);
MODULE_PARM_DESC(ospath, "pathname to processed ICS2115 OS firmware");
module_param(reset_time, int, 0444);
MODULE_PARM_DESC(reset_time, "how long to wait for a reset to take effect");
module_param(ramcheck_time, int, 0444);
MODULE_PARM_DESC(ramcheck_time, "how many seconds to wait for the RAM test");
module_param(osrun_time, int, 0444);
MODULE_PARM_DESC(osrun_time, "how many seconds to wait for the ICS2115 OS");
/* if WF_DEBUG not defined, no run-time debugging messages will
be available via the debug flag setting. Given the current
beta state of the driver, this will remain set until a future
version.
*/
#define WF_DEBUG 1
#ifdef WF_DEBUG
#define DPRINT(cond, ...) \
if ((dev->debug & (cond)) == (cond)) { \
snd_printk (__VA_ARGS__); \
}
#else
#define DPRINT(cond, args...)
#endif /* WF_DEBUG */
#define LOGNAME "WaveFront: "
/* bitmasks for WaveFront status port value */
#define STAT_RINTR_ENABLED 0x01
#define STAT_CAN_READ 0x02
#define STAT_INTR_READ 0x04
#define STAT_WINTR_ENABLED 0x10
#define STAT_CAN_WRITE 0x20
#define STAT_INTR_WRITE 0x40
static int wavefront_delete_sample (snd_wavefront_t *, int sampnum);
static int wavefront_find_free_sample (snd_wavefront_t *);
struct wavefront_command {
int cmd;
char *action;
unsigned int read_cnt;
unsigned int write_cnt;
int need_ack;
};
static struct {
int errno;
const char *errstr;
} wavefront_errors[] = {
{ 0x01, "Bad sample number" },
{ 0x02, "Out of sample memory" },
{ 0x03, "Bad patch number" },
{ 0x04, "Error in number of voices" },
{ 0x06, "Sample load already in progress" },
{ 0x0B, "No sample load request pending" },
{ 0x0E, "Bad MIDI channel number" },
{ 0x10, "Download Record Error" },
{ 0x80, "Success" },
{ 0x0 }
};
#define NEEDS_ACK 1
static struct wavefront_command wavefront_commands[] = {
{ WFC_SET_SYNTHVOL, "set synthesizer volume", 0, 1, NEEDS_ACK },
{ WFC_GET_SYNTHVOL, "get synthesizer volume", 1, 0, 0},
{ WFC_SET_NVOICES, "set number of voices", 0, 1, NEEDS_ACK },
{ WFC_GET_NVOICES, "get number of voices", 1, 0, 0 },
{ WFC_SET_TUNING, "set synthesizer tuning", 0, 2, NEEDS_ACK },
{ WFC_GET_TUNING, "get synthesizer tuning", 2, 0, 0 },
{ WFC_DISABLE_CHANNEL, "disable synth channel", 0, 1, NEEDS_ACK },
{ WFC_ENABLE_CHANNEL, "enable synth channel", 0, 1, NEEDS_ACK },
{ WFC_GET_CHANNEL_STATUS, "get synth channel status", 3, 0, 0 },
{ WFC_MISYNTH_OFF, "disable midi-in to synth", 0, 0, NEEDS_ACK },
{ WFC_MISYNTH_ON, "enable midi-in to synth", 0, 0, NEEDS_ACK },
{ WFC_VMIDI_ON, "enable virtual midi mode", 0, 0, NEEDS_ACK },
{ WFC_VMIDI_OFF, "disable virtual midi mode", 0, 0, NEEDS_ACK },
{ WFC_MIDI_STATUS, "report midi status", 1, 0, 0 },
{ WFC_FIRMWARE_VERSION, "report firmware version", 2, 0, 0 },
{ WFC_HARDWARE_VERSION, "report hardware version", 2, 0, 0 },
{ WFC_GET_NSAMPLES, "report number of samples", 2, 0, 0 },
{ WFC_INSTOUT_LEVELS, "report instantaneous output levels", 7, 0, 0 },
{ WFC_PEAKOUT_LEVELS, "report peak output levels", 7, 0, 0 },
{ WFC_DOWNLOAD_SAMPLE, "download sample",
0, WF_SAMPLE_BYTES, NEEDS_ACK },
{ WFC_DOWNLOAD_BLOCK, "download block", 0, 0, NEEDS_ACK},
{ WFC_DOWNLOAD_SAMPLE_HEADER, "download sample header",
0, WF_SAMPLE_HDR_BYTES, NEEDS_ACK },
{ WFC_UPLOAD_SAMPLE_HEADER, "upload sample header", 13, 2, 0 },
/* This command requires a variable number of bytes to be written.
There is a hack in snd_wavefront_cmd() to support this. The actual
count is passed in as the read buffer ptr, cast appropriately.
Ugh.
*/
{ WFC_DOWNLOAD_MULTISAMPLE, "download multisample", 0, 0, NEEDS_ACK },
/* This one is a hack as well. We just read the first byte of the
response, don't fetch an ACK, and leave the rest to the
calling function. Ugly, ugly, ugly.
*/
{ WFC_UPLOAD_MULTISAMPLE, "upload multisample", 2, 1, 0 },
{ WFC_DOWNLOAD_SAMPLE_ALIAS, "download sample alias",
0, WF_ALIAS_BYTES, NEEDS_ACK },
{ WFC_UPLOAD_SAMPLE_ALIAS, "upload sample alias", WF_ALIAS_BYTES, 2, 0},
{ WFC_DELETE_SAMPLE, "delete sample", 0, 2, NEEDS_ACK },
{ WFC_IDENTIFY_SAMPLE_TYPE, "identify sample type", 5, 2, 0 },
{ WFC_UPLOAD_SAMPLE_PARAMS, "upload sample parameters" },
{ WFC_REPORT_FREE_MEMORY, "report free memory", 4, 0, 0 },
{ WFC_DOWNLOAD_PATCH, "download patch", 0, 134, NEEDS_ACK },
{ WFC_UPLOAD_PATCH, "upload patch", 132, 2, 0 },
{ WFC_DOWNLOAD_PROGRAM, "download program", 0, 33, NEEDS_ACK },
{ WFC_UPLOAD_PROGRAM, "upload program", 32, 1, 0 },
{ WFC_DOWNLOAD_EDRUM_PROGRAM, "download enhanced drum program", 0, 9,
NEEDS_ACK},
{ WFC_UPLOAD_EDRUM_PROGRAM, "upload enhanced drum program", 8, 1, 0},
{ WFC_SET_EDRUM_CHANNEL, "set enhanced drum program channel",
0, 1, NEEDS_ACK },
{ WFC_DISABLE_DRUM_PROGRAM, "disable drum program", 0, 1, NEEDS_ACK },
{ WFC_REPORT_CHANNEL_PROGRAMS, "report channel program numbers",
32, 0, 0 },
{ WFC_NOOP, "the no-op command", 0, 0, NEEDS_ACK },
{ 0x00 }
};
static const char *
wavefront_errorstr (int errnum)
{
int i;
for (i = 0; wavefront_errors[i].errstr; i++) {
if (wavefront_errors[i].errno == errnum) {
return wavefront_errors[i].errstr;
}
}
return "Unknown WaveFront error";
}
static struct wavefront_command *
wavefront_get_command (int cmd)
{
int i;
for (i = 0; wavefront_commands[i].cmd != 0; i++) {
if (cmd == wavefront_commands[i].cmd) {
return &wavefront_commands[i];
}
}
return NULL;
}
static inline int
wavefront_status (snd_wavefront_t *dev)
{
return inb (dev->status_port);
}
static int
wavefront_sleep (int limit)
{
schedule_timeout_interruptible(limit);
return signal_pending(current);
}
static int
wavefront_wait (snd_wavefront_t *dev, int mask)
{
int i;
/* Spin for a short period of time, because >99% of all
requests to the WaveFront can be serviced inline like this.
*/
for (i = 0; i < wait_usecs; i += 5) {
if (wavefront_status (dev) & mask) {
return 1;
}
udelay(5);
}
for (i = 0; i < sleep_tries; i++) {
if (wavefront_status (dev) & mask) {
return 1;
}
if (wavefront_sleep (HZ/sleep_interval)) {
return (0);
}
}
return (0);
}
static int
wavefront_read (snd_wavefront_t *dev)
{
if (wavefront_wait (dev, STAT_CAN_READ))
return inb (dev->data_port);
DPRINT (WF_DEBUG_DATA, "read timeout.\n");
return -1;
}
static int
wavefront_write (snd_wavefront_t *dev, unsigned char data)
{
if (wavefront_wait (dev, STAT_CAN_WRITE)) {
outb (data, dev->data_port);
return 0;
}
DPRINT (WF_DEBUG_DATA, "write timeout.\n");
return -1;
}
int
snd_wavefront_cmd (snd_wavefront_t *dev,
int cmd, unsigned char *rbuf, unsigned char *wbuf)
{
int ack;
unsigned int i;
int c;
struct wavefront_command *wfcmd;
if ((wfcmd = wavefront_get_command (cmd)) == NULL) {
snd_printk ("command 0x%x not supported.\n",
cmd);
return 1;
}
/* Hack to handle the one variable-size write command. See
wavefront_send_multisample() for the other half of this
gross and ugly strategy.
*/
if (cmd == WFC_DOWNLOAD_MULTISAMPLE) {
wfcmd->write_cnt = (unsigned long) rbuf;
rbuf = NULL;
}
DPRINT (WF_DEBUG_CMD, "0x%x [%s] (%d,%d,%d)\n",
cmd, wfcmd->action, wfcmd->read_cnt,
wfcmd->write_cnt, wfcmd->need_ack);
if (wavefront_write (dev, cmd)) {
DPRINT ((WF_DEBUG_IO|WF_DEBUG_CMD), "cannot request "
"0x%x [%s].\n",
cmd, wfcmd->action);
return 1;
}
if (wfcmd->write_cnt > 0) {
DPRINT (WF_DEBUG_DATA, "writing %d bytes "
"for 0x%x\n",
wfcmd->write_cnt, cmd);
for (i = 0; i < wfcmd->write_cnt; i++) {
if (wavefront_write (dev, wbuf[i])) {
DPRINT (WF_DEBUG_IO, "bad write for byte "
"%d of 0x%x [%s].\n",
i, cmd, wfcmd->action);
return 1;
}
DPRINT (WF_DEBUG_DATA, "write[%d] = 0x%x\n",
i, wbuf[i]);
}
}
if (wfcmd->read_cnt > 0) {
DPRINT (WF_DEBUG_DATA, "reading %d ints "
"for 0x%x\n",
wfcmd->read_cnt, cmd);
for (i = 0; i < wfcmd->read_cnt; i++) {
if ((c = wavefront_read (dev)) == -1) {
DPRINT (WF_DEBUG_IO, "bad read for byte "
"%d of 0x%x [%s].\n",
i, cmd, wfcmd->action);
return 1;
}
/* Now handle errors. Lots of special cases here */
if (c == 0xff) {
if ((c = wavefront_read (dev)) == -1) {
DPRINT (WF_DEBUG_IO, "bad read for "
"error byte at "
"read byte %d "
"of 0x%x [%s].\n",
i, cmd,
wfcmd->action);
return 1;
}
/* Can you believe this madness ? */
if (c == 1 &&
wfcmd->cmd == WFC_IDENTIFY_SAMPLE_TYPE) {
rbuf[0] = WF_ST_EMPTY;
return (0);
} else if (c == 3 &&
wfcmd->cmd == WFC_UPLOAD_PATCH) {
return 3;
} else if (c == 1 &&
wfcmd->cmd == WFC_UPLOAD_PROGRAM) {
return 1;
} else {
DPRINT (WF_DEBUG_IO, "error %d (%s) "
"during "
"read for byte "
"%d of 0x%x "
"[%s].\n",
c,
wavefront_errorstr (c),
i, cmd,
wfcmd->action);
return 1;
}
} else {
rbuf[i] = c;
}
DPRINT (WF_DEBUG_DATA, "read[%d] = 0x%x\n",i, rbuf[i]);
}
}
if ((wfcmd->read_cnt == 0 && wfcmd->write_cnt == 0) || wfcmd->need_ack) {
DPRINT (WF_DEBUG_CMD, "reading ACK for 0x%x\n", cmd);
/* Some commands need an ACK, but return zero instead
of the standard value.
*/
if ((ack = wavefront_read (dev)) == 0) {
ack = WF_ACK;
}
if (ack != WF_ACK) {
if (ack == -1) {
DPRINT (WF_DEBUG_IO, "cannot read ack for "
"0x%x [%s].\n",
cmd, wfcmd->action);
return 1;
} else {
int err = -1; /* something unknown */
if (ack == 0xff) { /* explicit error */
if ((err = wavefront_read (dev)) == -1) {
DPRINT (WF_DEBUG_DATA,
"cannot read err "
"for 0x%x [%s].\n",
cmd, wfcmd->action);
}
}
DPRINT (WF_DEBUG_IO, "0x%x [%s] "
"failed (0x%x, 0x%x, %s)\n",
cmd, wfcmd->action, ack, err,
wavefront_errorstr (err));
return -err;
}
}
DPRINT (WF_DEBUG_DATA, "ack received "
"for 0x%x [%s]\n",
cmd, wfcmd->action);
} else {
DPRINT (WF_DEBUG_CMD, "0x%x [%s] does not need "
"ACK (%d,%d,%d)\n",
cmd, wfcmd->action, wfcmd->read_cnt,
wfcmd->write_cnt, wfcmd->need_ack);
}
return 0;
}
/***********************************************************************
WaveFront data munging
Things here are weird. All data written to the board cannot
have its most significant bit set. Any data item with values
potentially > 0x7F (127) must be split across multiple bytes.
Sometimes, we need to munge numeric values that are represented on
the x86 side as 8-32 bit values. Sometimes, we need to munge data
that is represented on the x86 side as an array of bytes. The most
efficient approach to handling both cases seems to be to use 2
different functions for munging and 2 for de-munging. This avoids
weird casting and worrying about bit-level offsets.
**********************************************************************/
static unsigned char *
munge_int32 (unsigned int src,
unsigned char *dst,
unsigned int dst_size)
{
unsigned int i;
for (i = 0; i < dst_size; i++) {
*dst = src & 0x7F; /* Mask high bit of LSB */
src = src >> 7; /* Rotate Right 7 bits */
/* Note: we leave the upper bits in place */
dst++;
}
return dst;
};
static int
demunge_int32 (unsigned char* src, int src_size)
{
int i;
int outval = 0;
for (i = src_size - 1; i >= 0; i--) {
outval=(outval<<7)+src[i];
}
return outval;
};
static
unsigned char *
munge_buf (unsigned char *src, unsigned char *dst, unsigned int dst_size)
{
unsigned int i;
unsigned int last = dst_size / 2;
for (i = 0; i < last; i++) {
*dst++ = src[i] & 0x7f;
*dst++ = src[i] >> 7;
}
return dst;
}
static
unsigned char *
demunge_buf (unsigned char *src, unsigned char *dst, unsigned int src_bytes)
{
int i;
unsigned char *end = src + src_bytes;
end = src + src_bytes;
/* NOTE: src and dst *CAN* point to the same address */
for (i = 0; src != end; i++) {
dst[i] = *src++;
dst[i] |= (*src++)<<7;
}
return dst;
}
/***********************************************************************
WaveFront: sample, patch and program management.
***********************************************************************/
static int
wavefront_delete_sample (snd_wavefront_t *dev, int sample_num)
{
unsigned char wbuf[2];
int x;
wbuf[0] = sample_num & 0x7f;
wbuf[1] = sample_num >> 7;
if ((x = snd_wavefront_cmd (dev, WFC_DELETE_SAMPLE, NULL, wbuf)) == 0) {
dev->sample_status[sample_num] = WF_ST_EMPTY;
}
return x;
}
static int
wavefront_get_sample_status (snd_wavefront_t *dev, int assume_rom)
{
int i;
unsigned char rbuf[32], wbuf[32];
unsigned int sc_real, sc_alias, sc_multi;
/* check sample status */
if (snd_wavefront_cmd (dev, WFC_GET_NSAMPLES, rbuf, wbuf)) {
snd_printk ("cannot request sample count.\n");
return -1;
}
sc_real = sc_alias = sc_multi = dev->samples_used = 0;
for (i = 0; i < WF_MAX_SAMPLE; i++) {
wbuf[0] = i & 0x7f;
wbuf[1] = i >> 7;
if (snd_wavefront_cmd (dev, WFC_IDENTIFY_SAMPLE_TYPE, rbuf, wbuf)) {
snd_printk(KERN_WARNING "cannot identify sample "
"type of slot %d\n", i);
dev->sample_status[i] = WF_ST_EMPTY;
continue;
}
dev->sample_status[i] = (WF_SLOT_FILLED|rbuf[0]);
if (assume_rom) {
dev->sample_status[i] |= WF_SLOT_ROM;
}
switch (rbuf[0] & WF_ST_MASK) {
case WF_ST_SAMPLE:
sc_real++;
break;
case WF_ST_MULTISAMPLE:
sc_multi++;
break;
case WF_ST_ALIAS:
sc_alias++;
break;
case WF_ST_EMPTY:
break;
default:
snd_printk ("unknown sample type for "
"slot %d (0x%x)\n",
i, rbuf[0]);
}
if (rbuf[0] != WF_ST_EMPTY) {
dev->samples_used++;
}
}
snd_printk ("%d samples used (%d real, %d aliases, %d multi), "
"%d empty\n", dev->samples_used, sc_real, sc_alias, sc_multi,
WF_MAX_SAMPLE - dev->samples_used);
return (0);
}
static int
wavefront_get_patch_status (snd_wavefront_t *dev)
{
unsigned char patchbuf[WF_PATCH_BYTES];
unsigned char patchnum[2];
wavefront_patch *p;
int i, x, cnt, cnt2;
for (i = 0; i < WF_MAX_PATCH; i++) {
patchnum[0] = i & 0x7f;
patchnum[1] = i >> 7;
if ((x = snd_wavefront_cmd (dev, WFC_UPLOAD_PATCH, patchbuf,
patchnum)) == 0) {
dev->patch_status[i] |= WF_SLOT_FILLED;
p = (wavefront_patch *) patchbuf;
dev->sample_status
[p->sample_number|(p->sample_msb<<7)] |=
WF_SLOT_USED;
} else if (x == 3) { /* Bad patch number */
dev->patch_status[i] = 0;
} else {
snd_printk ("upload patch "
"error 0x%x\n", x);
dev->patch_status[i] = 0;
return 1;
}
}
/* program status has already filled in slot_used bits */
for (i = 0, cnt = 0, cnt2 = 0; i < WF_MAX_PATCH; i++) {
if (dev->patch_status[i] & WF_SLOT_FILLED) {
cnt++;
}
if (dev->patch_status[i] & WF_SLOT_USED) {
cnt2++;
}
}
snd_printk ("%d patch slots filled, %d in use\n", cnt, cnt2);
return (0);
}
static int
wavefront_get_program_status (snd_wavefront_t *dev)
{
unsigned char progbuf[WF_PROGRAM_BYTES];
wavefront_program prog;
unsigned char prognum;
int i, x, l, cnt;
for (i = 0; i < WF_MAX_PROGRAM; i++) {
prognum = i;
if ((x = snd_wavefront_cmd (dev, WFC_UPLOAD_PROGRAM, progbuf,
&prognum)) == 0) {
dev->prog_status[i] |= WF_SLOT_USED;
demunge_buf (progbuf, (unsigned char *) &prog,
WF_PROGRAM_BYTES);
for (l = 0; l < WF_NUM_LAYERS; l++) {
if (prog.layer[l].mute) {
dev->patch_status
[prog.layer[l].patch_number] |=
WF_SLOT_USED;
}
}
} else if (x == 1) { /* Bad program number */
dev->prog_status[i] = 0;
} else {
snd_printk ("upload program "
"error 0x%x\n", x);
dev->prog_status[i] = 0;
}
}
for (i = 0, cnt = 0; i < WF_MAX_PROGRAM; i++) {
if (dev->prog_status[i]) {
cnt++;
}
}
snd_printk ("%d programs slots in use\n", cnt);
return (0);
}
static int
wavefront_send_patch (snd_wavefront_t *dev, wavefront_patch_info *header)
{
unsigned char buf[WF_PATCH_BYTES+2];
unsigned char *bptr;
DPRINT (WF_DEBUG_LOAD_PATCH, "downloading patch %d\n",
header->number);
if (header->number >= ARRAY_SIZE(dev->patch_status))
return -EINVAL;
dev->patch_status[header->number] |= WF_SLOT_FILLED;
bptr = buf;
bptr = munge_int32 (header->number, buf, 2);
munge_buf ((unsigned char *)&header->hdr.p, bptr, WF_PATCH_BYTES);
if (snd_wavefront_cmd (dev, WFC_DOWNLOAD_PATCH, NULL, buf)) {
snd_printk ("download patch failed\n");
return -EIO;
}
return (0);
}
static int
wavefront_send_program (snd_wavefront_t *dev, wavefront_patch_info *header)
{
unsigned char buf[WF_PROGRAM_BYTES+1];
int i;
DPRINT (WF_DEBUG_LOAD_PATCH, "downloading program %d\n",
header->number);
if (header->number >= ARRAY_SIZE(dev->prog_status))
return -EINVAL;
dev->prog_status[header->number] = WF_SLOT_USED;
/* XXX need to zero existing SLOT_USED bit for program_status[i]
where `i' is the program that's being (potentially) overwritten.
*/
for (i = 0; i < WF_NUM_LAYERS; i++) {
if (header->hdr.pr.layer[i].mute) {
dev->patch_status[header->hdr.pr.layer[i].patch_number] |=
WF_SLOT_USED;
/* XXX need to mark SLOT_USED for sample used by
patch_number, but this means we have to load it. Ick.
*/
}
}
buf[0] = header->number;
munge_buf ((unsigned char *)&header->hdr.pr, &buf[1], WF_PROGRAM_BYTES);
if (snd_wavefront_cmd (dev, WFC_DOWNLOAD_PROGRAM, NULL, buf)) {
snd_printk ("download patch failed\n");
return -EIO;
}
return (0);
}
static int
wavefront_freemem (snd_wavefront_t *dev)
{
char rbuf[8];
if (snd_wavefront_cmd (dev, WFC_REPORT_FREE_MEMORY, rbuf, NULL)) {
snd_printk ("can't get memory stats.\n");
return -1;
} else {
return demunge_int32 (rbuf, 4);
}
}
static int
wavefront_send_sample (snd_wavefront_t *dev,
wavefront_patch_info *header,
u16 __user *dataptr,
int data_is_unsigned)
{
/* samples are downloaded via a 16-bit wide i/o port
(you could think of it as 2 adjacent 8-bit wide ports
but its less efficient that way). therefore, all
the blocksizes and so forth listed in the documentation,
and used conventionally to refer to sample sizes,
which are given in 8-bit units (bytes), need to be
divided by 2.
*/
u16 sample_short = 0;
u32 length;
u16 __user *data_end = NULL;
unsigned int i;
const unsigned int max_blksize = 4096/2;
unsigned int written;
unsigned int blocksize;
int dma_ack;
int blocknum;
unsigned char sample_hdr[WF_SAMPLE_HDR_BYTES];
unsigned char *shptr;
int skip = 0;
int initial_skip = 0;
DPRINT (WF_DEBUG_LOAD_PATCH, "sample %sdownload for slot %d, "
"type %d, %d bytes from 0x%lx\n",
header->size ? "" : "header ",
header->number, header->subkey,
header->size,
(unsigned long) header->dataptr);
if (header->number == WAVEFRONT_FIND_FREE_SAMPLE_SLOT) {
int x;
if ((x = wavefront_find_free_sample (dev)) < 0) {
return -ENOMEM;
}
snd_printk ("unspecified sample => %d\n", x);
header->number = x;
}
if (header->number >= WF_MAX_SAMPLE)
return -EINVAL;
if (header->size) {
/* XXX it's a debatable point whether or not RDONLY semantics
on the ROM samples should cover just the sample data or
the sample header. For now, it only covers the sample data,
so anyone is free at all times to rewrite sample headers.
My reason for this is that we have the sample headers
available in the WFB file for General MIDI, and so these
can always be reset if needed. The sample data, however,
cannot be recovered without a complete reset and firmware
reload of the ICS2115, which is a very expensive operation.
So, doing things this way allows us to honor the notion of
"RESETSAMPLES" reasonably cheaply. Note however, that this
is done purely at user level: there is no WFB parser in
this driver, and so a complete reset (back to General MIDI,
or theoretically some other configuration) is the
responsibility of the user level library.
To try to do this in the kernel would be a little
crazy: we'd need 158K of kernel space just to hold
a copy of the patch/program/sample header data.
*/
if (dev->rom_samples_rdonly) {
if (dev->sample_status[header->number] & WF_SLOT_ROM) {
snd_printk ("sample slot %d "
"write protected\n",
header->number);
return -EACCES;
}
}
wavefront_delete_sample (dev, header->number);
}
if (header->size) {
dev->freemem = wavefront_freemem (dev);
if (dev->freemem < (int)header->size) {
snd_printk ("insufficient memory to "
"load %d byte sample.\n",
header->size);
return -ENOMEM;
}
}
skip = WF_GET_CHANNEL(&header->hdr.s);
if (skip > 0 && header->hdr.s.SampleResolution != LINEAR_16BIT) {
snd_printk ("channel selection only "
"possible on 16-bit samples");
return -EINVAL;
}
switch (skip) {
case 0:
initial_skip = 0;
skip = 1;
break;
case 1:
initial_skip = 0;
skip = 2;
break;
case 2:
initial_skip = 1;
skip = 2;
break;
case 3:
initial_skip = 2;
skip = 3;
break;
case 4:
initial_skip = 3;
skip = 4;
break;
case 5:
initial_skip = 4;
skip = 5;
break;
case 6:
initial_skip = 5;
skip = 6;
break;
}
DPRINT (WF_DEBUG_LOAD_PATCH, "channel selection: %d => "
"initial skip = %d, skip = %d\n",