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linux/sound/pci/als4000.c
Takashi Iwai 11ca9afcfe [ALSA] als4000 - Fix kernel panic with MPU401 
ALS4000 driver
Fix kernel panic with als4000 when MPU401 is accessed.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2005-05-29 10:15:21 +02:00

790 lines
22 KiB
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/*
* card-als4000.c - driver for Avance Logic ALS4000 based soundcards.
* Copyright (C) 2000 by Bart Hartgers <bart@etpmod.phys.tue.nl>,
* Jaroslav Kysela <perex@suse.cz>
* Copyright (C) 2002 by Andreas Mohr <hw7oshyuv3001@sneakemail.com>
*
* Framework borrowed from Massimo Piccioni's card-als100.c.
*
* NOTES
*
* Since Avance does not provide any meaningful documentation, and I
* bought an ALS4000 based soundcard, I was forced to base this driver
* on reverse engineering.
*
* Note: this is no longer true. Pretty verbose chip docu (ALS4000a.PDF)
* can be found on the ALSA web site.
*
* The ALS4000 seems to be the PCI-cousin of the ALS100. It contains an
* ALS100-like SB DSP/mixer, an OPL3 synth, a MPU401 and a gameport
* interface. These subsystems can be mapped into ISA io-port space,
* using the PCI-interface. In addition, the PCI-bit provides DMA and IRQ
* services to the subsystems.
*
* While ALS4000 is very similar to a SoundBlaster, the differences in
* DMA and capturing require more changes to the SoundBlaster than
* desirable, so I made this separate driver.
*
* The ALS4000 can do real full duplex playback/capture.
*
* FMDAC:
* - 0x4f -> port 0x14
* - port 0x15 |= 1
*
* Enable/disable 3D sound:
* - 0x50 -> port 0x14
* - change bit 6 (0x40) of port 0x15
*
* Set QSound:
* - 0xdb -> port 0x14
* - set port 0x15:
* 0x3e (mode 3), 0x3c (mode 2), 0x3a (mode 1), 0x38 (mode 0)
*
* Set KSound:
* - value -> some port 0x0c0d
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <sound/driver.h>
#include <asm/io.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/gameport.h>
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/rawmidi.h>
#include <sound/mpu401.h>
#include <sound/opl3.h>
#include <sound/sb.h>
#include <sound/initval.h>
MODULE_AUTHOR("Bart Hartgers <bart@etpmod.phys.tue.nl>");
MODULE_DESCRIPTION("Avance Logic ALS4000");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS4000}}");
#if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
#define SUPPORT_JOYSTICK 1
#endif
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
#ifdef SUPPORT_JOYSTICK
static int joystick_port[SNDRV_CARDS];
#endif
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard.");
#ifdef SUPPORT_JOYSTICK
module_param_array(joystick_port, int, NULL, 0444);
MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)");
#endif
typedef struct {
struct pci_dev *pci;
unsigned long gcr;
#ifdef SUPPORT_JOYSTICK
struct gameport *gameport;
#endif
} snd_card_als4000_t;
static struct pci_device_id snd_als4000_ids[] = {
{ 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* ALS4000 */
{ 0, }
};
MODULE_DEVICE_TABLE(pci, snd_als4000_ids);
static inline void snd_als4000_gcr_write_addr(unsigned long port, u32 reg, u32 val)
{
outb(reg, port+0x0c);
outl(val, port+0x08);
}
static inline void snd_als4000_gcr_write(sb_t *sb, u32 reg, u32 val)
{
snd_als4000_gcr_write_addr(sb->alt_port, reg, val);
}
static inline u32 snd_als4000_gcr_read_addr(unsigned long port, u32 reg)
{
outb(reg, port+0x0c);
return inl(port+0x08);
}
static inline u32 snd_als4000_gcr_read(sb_t *sb, u32 reg)
{
return snd_als4000_gcr_read_addr(sb->alt_port, reg);
}
static void snd_als4000_set_rate(sb_t *chip, unsigned int rate)
{
if (!(chip->mode & SB_RATE_LOCK)) {
snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
snd_sbdsp_command(chip, rate>>8);
snd_sbdsp_command(chip, rate);
}
}
static void snd_als4000_set_capture_dma(sb_t *chip, dma_addr_t addr, unsigned size)
{
snd_als4000_gcr_write(chip, 0xa2, addr);
snd_als4000_gcr_write(chip, 0xa3, (size-1));
}
static void snd_als4000_set_playback_dma(sb_t *chip, dma_addr_t addr, unsigned size)
{
snd_als4000_gcr_write(chip, 0x91, addr);
snd_als4000_gcr_write(chip, 0x92, (size-1)|0x180000);
}
#define ALS4000_FORMAT_SIGNED (1<<0)
#define ALS4000_FORMAT_16BIT (1<<1)
#define ALS4000_FORMAT_STEREO (1<<2)
static int snd_als4000_get_format(snd_pcm_runtime_t *runtime)
{
int result;
result = 0;
if (snd_pcm_format_signed(runtime->format))
result |= ALS4000_FORMAT_SIGNED;
if (snd_pcm_format_physical_width(runtime->format) == 16)
result |= ALS4000_FORMAT_16BIT;
if (runtime->channels > 1)
result |= ALS4000_FORMAT_STEREO;
return result;
}
/* structure for setting up playback */
static struct {
unsigned char dsp_cmd, dma_on, dma_off, format;
} playback_cmd_vals[]={
/* ALS4000_FORMAT_U8_MONO */
{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
/* ALS4000_FORMAT_S8_MONO */
{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
/* ALS4000_FORMAT_U16L_MONO */
{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
/* ALS4000_FORMAT_S16L_MONO */
{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
/* ALS4000_FORMAT_U8_STEREO */
{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
/* ALS4000_FORMAT_S8_STEREO */
{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
/* ALS4000_FORMAT_U16L_STEREO */
{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
/* ALS4000_FORMAT_S16L_STEREO */
{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
};
#define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
/* structure for setting up capture */
enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
static unsigned char capture_cmd_vals[]=
{
CMD_WIDTH8|CMD_MONO, /* ALS4000_FORMAT_U8_MONO */
CMD_WIDTH8|CMD_SIGNED|CMD_MONO, /* ALS4000_FORMAT_S8_MONO */
CMD_MONO, /* ALS4000_FORMAT_U16L_MONO */
CMD_SIGNED|CMD_MONO, /* ALS4000_FORMAT_S16L_MONO */
CMD_WIDTH8|CMD_STEREO, /* ALS4000_FORMAT_U8_STEREO */
CMD_WIDTH8|CMD_SIGNED|CMD_STEREO, /* ALS4000_FORMAT_S8_STEREO */
CMD_STEREO, /* ALS4000_FORMAT_U16L_STEREO */
CMD_SIGNED|CMD_STEREO, /* ALS4000_FORMAT_S16L_STEREO */
};
#define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
static int snd_als4000_hw_params(snd_pcm_substream_t * substream,
snd_pcm_hw_params_t * hw_params)
{
return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
}
static int snd_als4000_hw_free(snd_pcm_substream_t * substream)
{
snd_pcm_lib_free_pages(substream);
return 0;
}
static int snd_als4000_capture_prepare(snd_pcm_substream_t * substream)
{
unsigned long flags;
sb_t *chip = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
unsigned long size;
unsigned count;
chip->capture_format = snd_als4000_get_format(runtime);
size = snd_pcm_lib_buffer_bytes(substream);
count = snd_pcm_lib_period_bytes(substream);
if (chip->capture_format & ALS4000_FORMAT_16BIT)
count >>=1;
count--;
spin_lock_irqsave(&chip->reg_lock, flags);
snd_als4000_set_rate(chip, runtime->rate);
snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
spin_unlock_irqrestore(&chip->reg_lock, flags);
spin_lock_irqsave(&chip->mixer_lock, flags );
snd_sbmixer_write(chip, 0xdc, count);
snd_sbmixer_write(chip, 0xdd, count>>8);
spin_unlock_irqrestore(&chip->mixer_lock, flags );
return 0;
}
static int snd_als4000_playback_prepare(snd_pcm_substream_t *substream)
{
unsigned long flags;
sb_t *chip = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
unsigned long size;
unsigned count;
chip->playback_format = snd_als4000_get_format(runtime);
size = snd_pcm_lib_buffer_bytes(substream);
count = snd_pcm_lib_period_bytes(substream);
if (chip->playback_format & ALS4000_FORMAT_16BIT)
count >>=1;
count--;
/* FIXME: from second playback on, there's a lot more clicks and pops
* involved here than on first playback. Fiddling with
* tons of different settings didn't help (DMA, speaker on/off,
* reordering, ...). Something seems to get enabled on playback
* that I haven't found out how to disable again, which then causes
* the switching pops to reach the speakers the next time here. */
spin_lock_irqsave(&chip->reg_lock, flags);
snd_als4000_set_rate(chip, runtime->rate);
snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
/* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
/* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
snd_sbdsp_command(chip, playback_cmd(chip).format);
snd_sbdsp_command(chip, count);
snd_sbdsp_command(chip, count>>8);
snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return 0;
}
static int snd_als4000_capture_trigger(snd_pcm_substream_t * substream, int cmd)
{
sb_t *chip = snd_pcm_substream_chip(substream);
int result = 0;
spin_lock(&chip->mixer_lock);
if (cmd == SNDRV_PCM_TRIGGER_START) {
chip->mode |= SB_RATE_LOCK_CAPTURE;
snd_sbmixer_write(chip, 0xde, capture_cmd(chip));
} else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
chip->mode &= ~SB_RATE_LOCK_CAPTURE;
snd_sbmixer_write(chip, 0xde, 0);
} else {
result = -EINVAL;
}
spin_unlock(&chip->mixer_lock);
return result;
}
static int snd_als4000_playback_trigger(snd_pcm_substream_t * substream, int cmd)
{
sb_t *chip = snd_pcm_substream_chip(substream);
int result = 0;
spin_lock(&chip->reg_lock);
if (cmd == SNDRV_PCM_TRIGGER_START) {
chip->mode |= SB_RATE_LOCK_PLAYBACK;
snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
} else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
} else {
result = -EINVAL;
}
spin_unlock(&chip->reg_lock);
return result;
}
static snd_pcm_uframes_t snd_als4000_capture_pointer(snd_pcm_substream_t * substream)
{
sb_t *chip = snd_pcm_substream_chip(substream);
unsigned int result;
spin_lock(&chip->reg_lock);
result = snd_als4000_gcr_read(chip, 0xa4) & 0xffff;
spin_unlock(&chip->reg_lock);
return bytes_to_frames( substream->runtime, result );
}
static snd_pcm_uframes_t snd_als4000_playback_pointer(snd_pcm_substream_t * substream)
{
sb_t *chip = snd_pcm_substream_chip(substream);
unsigned result;
spin_lock(&chip->reg_lock);
result = snd_als4000_gcr_read(chip, 0xa0) & 0xffff;
spin_unlock(&chip->reg_lock);
return bytes_to_frames( substream->runtime, result );
}
static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
sb_t *chip = dev_id;
unsigned gcr_status;
unsigned sb_status;
/* find out which bit of the ALS4000 produced the interrupt */
gcr_status = inb(chip->alt_port + 0xe);
if ((gcr_status & 0x80) && (chip->playback_substream)) /* playback */
snd_pcm_period_elapsed(chip->playback_substream);
if ((gcr_status & 0x40) && (chip->capture_substream)) /* capturing */
snd_pcm_period_elapsed(chip->capture_substream);
if ((gcr_status & 0x10) && (chip->rmidi)) /* MPU401 interrupt */
snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
/* release the gcr */
outb(gcr_status, chip->alt_port + 0xe);
spin_lock(&chip->mixer_lock);
sb_status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
spin_unlock(&chip->mixer_lock);
if (sb_status & SB_IRQTYPE_8BIT)
snd_sb_ack_8bit(chip);
if (sb_status & SB_IRQTYPE_16BIT)
snd_sb_ack_16bit(chip);
if (sb_status & SB_IRQTYPE_MPUIN)
inb(chip->mpu_port);
if (sb_status & 0x20)
inb(SBP(chip, RESET));
return IRQ_HANDLED;
}
/*****************************************************************/
static snd_pcm_hardware_t snd_als4000_playback =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE, /* formats */
.rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
.rate_min = 4000,
.rate_max = 48000,
.channels_min = 1,
.channels_max = 2,
.buffer_bytes_max = 65536,
.period_bytes_min = 64,
.period_bytes_max = 65536,
.periods_min = 1,
.periods_max = 1024,
.fifo_size = 0
};
static snd_pcm_hardware_t snd_als4000_capture =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE, /* formats */
.rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
.rate_min = 4000,
.rate_max = 48000,
.channels_min = 1,
.channels_max = 2,
.buffer_bytes_max = 65536,
.period_bytes_min = 64,
.period_bytes_max = 65536,
.periods_min = 1,
.periods_max = 1024,
.fifo_size = 0
};
/*****************************************************************/
static int snd_als4000_playback_open(snd_pcm_substream_t * substream)
{
sb_t *chip = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
chip->playback_substream = substream;
runtime->hw = snd_als4000_playback;
return 0;
}
static int snd_als4000_playback_close(snd_pcm_substream_t * substream)
{
sb_t *chip = snd_pcm_substream_chip(substream);
chip->playback_substream = NULL;
snd_pcm_lib_free_pages(substream);
return 0;
}
static int snd_als4000_capture_open(snd_pcm_substream_t * substream)
{
sb_t *chip = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
chip->capture_substream = substream;
runtime->hw = snd_als4000_capture;
return 0;
}
static int snd_als4000_capture_close(snd_pcm_substream_t * substream)
{
sb_t *chip = snd_pcm_substream_chip(substream);
chip->capture_substream = NULL;
snd_pcm_lib_free_pages(substream);
return 0;
}
/******************************************************************/
static snd_pcm_ops_t snd_als4000_playback_ops = {
.open = snd_als4000_playback_open,
.close = snd_als4000_playback_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_als4000_hw_params,
.hw_free = snd_als4000_hw_free,
.prepare = snd_als4000_playback_prepare,
.trigger = snd_als4000_playback_trigger,
.pointer = snd_als4000_playback_pointer
};
static snd_pcm_ops_t snd_als4000_capture_ops = {
.open = snd_als4000_capture_open,
.close = snd_als4000_capture_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_als4000_hw_params,
.hw_free = snd_als4000_hw_free,
.prepare = snd_als4000_capture_prepare,
.trigger = snd_als4000_capture_trigger,
.pointer = snd_als4000_capture_pointer
};
static void snd_als4000_pcm_free(snd_pcm_t *pcm)
{
sb_t *chip = pcm->private_data;
chip->pcm = NULL;
snd_pcm_lib_preallocate_free_for_all(pcm);
}
static int __devinit snd_als4000_pcm(sb_t *chip, int device)
{
snd_pcm_t *pcm;
int err;
if ((err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm)) < 0)
return err;
pcm->private_free = snd_als4000_pcm_free;
pcm->private_data = chip;
pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
64*1024, 64*1024);
chip->pcm = pcm;
return 0;
}
/******************************************************************/
static void snd_als4000_set_addr(unsigned long gcr,
unsigned int sb,
unsigned int mpu,
unsigned int opl,
unsigned int game)
{
u32 confA = 0;
u32 confB = 0;
if (mpu > 0)
confB |= (mpu | 1) << 16;
if (sb > 0)
confB |= (sb | 1);
if (game > 0)
confA |= (game | 1) << 16;
if (opl > 0)
confA |= (opl | 1);
snd_als4000_gcr_write_addr(gcr, 0xa8, confA);
snd_als4000_gcr_write_addr(gcr, 0xa9, confB);
}
static void __devinit snd_als4000_configure(sb_t *chip)
{
unsigned tmp;
int i;
/* do some more configuration */
spin_lock_irq(&chip->mixer_lock);
tmp = snd_sbmixer_read(chip, 0xc0);
snd_sbmixer_write(chip, 0xc0, tmp|0x80);
/* always select DMA channel 0, since we do not actually use DMA */
snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
snd_sbmixer_write(chip, 0xc0, tmp&0x7f);
spin_unlock_irq(&chip->mixer_lock);
spin_lock_irq(&chip->reg_lock);
/* magic number. Enables interrupts(?) */
snd_als4000_gcr_write(chip, 0x8c, 0x28000);
for(i = 0x91; i <= 0x96; ++i)
snd_als4000_gcr_write(chip, i, 0);
snd_als4000_gcr_write(chip, 0x99, snd_als4000_gcr_read(chip, 0x99));
spin_unlock_irq(&chip->reg_lock);
}
#ifdef SUPPORT_JOYSTICK
static int __devinit snd_als4000_create_gameport(snd_card_als4000_t *acard, int dev)
{
struct gameport *gp;
struct resource *r;
int io_port;
if (joystick_port[dev] == 0)
return -ENODEV;
if (joystick_port[dev] == 1) { /* auto-detect */
for (io_port = 0x200; io_port <= 0x218; io_port += 8) {
r = request_region(io_port, 8, "ALS4000 gameport");
if (r)
break;
}
} else {
io_port = joystick_port[dev];
r = request_region(io_port, 8, "ALS4000 gameport");
}
if (!r) {
printk(KERN_WARNING "als4000: cannot reserve joystick ports\n");
return -EBUSY;
}
acard->gameport = gp = gameport_allocate_port();
if (!gp) {
printk(KERN_ERR "als4000: cannot allocate memory for gameport\n");
release_resource(r);
kfree_nocheck(r);
return -ENOMEM;
}
gameport_set_name(gp, "ALS4000 Gameport");
gameport_set_phys(gp, "pci%s/gameport0", pci_name(acard->pci));
gameport_set_dev_parent(gp, &acard->pci->dev);
gp->io = io_port;
gameport_set_port_data(gp, r);
/* Enable legacy joystick port */
snd_als4000_set_addr(acard->gcr, 0, 0, 0, 1);
gameport_register_port(acard->gameport);
return 0;
}
static void snd_als4000_free_gameport(snd_card_als4000_t *acard)
{
if (acard->gameport) {
struct resource *r = gameport_get_port_data(acard->gameport);
gameport_unregister_port(acard->gameport);
acard->gameport = NULL;
snd_als4000_set_addr(acard->gcr, 0, 0, 0, 0); /* disable joystick */
release_resource(r);
kfree_nocheck(r);
}
}
#else
static inline int snd_als4000_create_gameport(snd_card_als4000_t *acard, int dev) { return -ENOSYS; }
static inline void snd_als4000_free_gameport(snd_card_als4000_t *acard) { }
#endif
static void snd_card_als4000_free( snd_card_t *card )
{
snd_card_als4000_t * acard = (snd_card_als4000_t *)card->private_data;
/* make sure that interrupts are disabled */
snd_als4000_gcr_write_addr( acard->gcr, 0x8c, 0);
/* free resources */
snd_als4000_free_gameport(acard);
pci_release_regions(acard->pci);
pci_disable_device(acard->pci);
}
static int __devinit snd_card_als4000_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
static int dev;
snd_card_t *card;
snd_card_als4000_t *acard;
unsigned long gcr;
sb_t *chip;
opl3_t *opl3;
unsigned short word;
int err;
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev]) {
dev++;
return -ENOENT;
}
/* enable PCI device */
if ((err = pci_enable_device(pci)) < 0) {
return err;
}
/* check, if we can restrict PCI DMA transfers to 24 bits */
if (pci_set_dma_mask(pci, 0x00ffffff) < 0 ||
pci_set_consistent_dma_mask(pci, 0x00ffffff) < 0) {
snd_printk("architecture does not support 24bit PCI busmaster DMA\n");
pci_disable_device(pci);
return -ENXIO;
}
if ((err = pci_request_regions(pci, "ALS4000")) < 0) {
pci_disable_device(pci);
return err;
}
gcr = pci_resource_start(pci, 0);
pci_read_config_word(pci, PCI_COMMAND, &word);
pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO);
pci_set_master(pci);
card = snd_card_new(index[dev], id[dev], THIS_MODULE,
sizeof( snd_card_als4000_t ) );
if (card == NULL) {
pci_release_regions(pci);
pci_disable_device(pci);
return -ENOMEM;
}
acard = (snd_card_als4000_t *)card->private_data;
acard->pci = pci;
acard->gcr = gcr;
card->private_free = snd_card_als4000_free;
/* disable all legacy ISA stuff */
snd_als4000_set_addr(acard->gcr, 0, 0, 0, 0);
if ((err = snd_sbdsp_create(card,
gcr + 0x10,
pci->irq,
snd_als4000_interrupt,
-1,
-1,
SB_HW_ALS4000,
&chip)) < 0) {
snd_card_free(card);
return err;
}
chip->pci = pci;
chip->alt_port = gcr;
snd_card_set_dev(card, &pci->dev);
snd_als4000_configure(chip);
strcpy(card->driver, "ALS4000");
strcpy(card->shortname, "Avance Logic ALS4000");
sprintf(card->longname, "%s at 0x%lx, irq %i",
card->shortname, chip->alt_port, chip->irq);
if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
gcr+0x30, 1, pci->irq, 0,
&chip->rmidi)) < 0) {
snd_card_free(card);
printk(KERN_ERR "als4000: no MPU-401device at 0x%lx ?\n", gcr+0x30);
return err;
}
if ((err = snd_als4000_pcm(chip, 0)) < 0) {
snd_card_free(card);
return err;
}
if ((err = snd_sbmixer_new(chip)) < 0) {
snd_card_free(card);
return err;
}
if (snd_opl3_create(card, gcr+0x10, gcr+0x12,
OPL3_HW_AUTO, 1, &opl3) < 0) {
printk(KERN_ERR "als4000: no OPL device at 0x%lx-0x%lx ?\n",
gcr+0x10, gcr+0x12 );
} else {
if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
snd_card_free(card);
return err;
}
}
snd_als4000_create_gameport(acard, dev);
if ((err = snd_card_register(card)) < 0) {
snd_card_free(card);
return err;
}
pci_set_drvdata(pci, card);
dev++;
return 0;
}
static void __devexit snd_card_als4000_remove(struct pci_dev *pci)
{
snd_card_free(pci_get_drvdata(pci));
pci_set_drvdata(pci, NULL);
}
static struct pci_driver driver = {
.name = "ALS4000",
.id_table = snd_als4000_ids,
.probe = snd_card_als4000_probe,
.remove = __devexit_p(snd_card_als4000_remove),
};
static int __init alsa_card_als4000_init(void)
{
return pci_register_driver(&driver);
}
static void __exit alsa_card_als4000_exit(void)
{
pci_unregister_driver(&driver);
}
module_init(alsa_card_als4000_init)
module_exit(alsa_card_als4000_exit)
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