sb16.c

是关于linux2.5.1的完全源码

/*
 *  Driver for SoundBlaster 16/AWE32/AWE64 soundcards
 *  Copyright (c) by Jaroslav Kysela <[e-mail]>
 *
 *
 *   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/dma.h>
#include <linux/init.h>
#include <linux/slab.h>
#ifndef LINUX_ISAPNP_H
#include <linux/isapnp.h>
#define isapnp_card pci_bus
#define isapnp_dev pci_dev
#endif
#include <sound/core.h>
#include <sound/sb.h>
#include <sound/sb16_csp.h>
#include <sound/mpu401.h>
#include <sound/opl3.h>
#include <sound/emu8000.h>
#include <sound/seq_device.h>
#define SNDRV_LEGACY_AUTO_PROBE
#define SNDRV_LEGACY_FIND_FREE_IRQ
#define SNDRV_LEGACY_FIND_FREE_DMA
#define SNDRV_GET_ID
#include <sound/initval.h>

#define chip_t sb_t

#ifdef SNDRV_SBAWE
#define PFX "sbawe: "
#else
#define PFX "sb16: "
#endif

#ifndef SNDRV_SBAWE
EXPORT_NO_SYMBOLS;
#endif

MODULE_AUTHOR("Jaroslav Kysela <[e-mail]>");
MODULE_LICENSE("GPL");
MODULE_CLASSES("{sound}");
#ifndef SNDRV_SBAWE
MODULE_DESCRIPTION("Sound Blaster 16");
MODULE_DEVICES("{{Creative Labs,SB 16},"
		"{Creative Labs,SB Vibra16S},"
		"{Creative Labs,SB Vibra16C},"
		"{Creative Labs,SB Vibra16CL},"
		"{Creative Labs,SB Vibra16X}}");
#else
MODULE_DESCRIPTION("Sound Blaster AWE");
MODULE_DEVICES("{{Creative Labs,SB AWE 32},"
		"{Creative Labs,SB AWE 64},"
		"{Creative Labs,SB AWE 64 Gold}}");
#endif

#if 0
#define SNDRV_DEBUG_IRQ
#endif

#if defined(SNDRV_SBAWE) && (defined(CONFIG_SND_SEQUENCER) || defined(CONFIG_SND_SEQUENCER_MODULE))
#define SNDRV_SBAWE_EMU8000
#endif

static int snd_index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
static char *snd_id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
static int snd_enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_ISAPNP; /* Enable this card */
#ifdef __ISAPNP__
static int snd_isapnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
#endif
static long snd_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* 0x220,0x240,0x260,0x280 */
static long snd_mpu_port[SNDRV_CARDS] = {0x330, 0x300,[2 ... (SNDRV_CARDS - 1)] = -1};
static long snd_fm_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
#ifdef SNDRV_SBAWE_EMU8000
static long snd_awe_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
#endif
static int snd_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 5,7,9,10 */
static int snd_dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3 */
static int snd_dma16[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 5,6,7 */
static int snd_mic_agc[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
#ifdef CONFIG_SND_SB16_CSP
static int snd_csp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0};
#endif
#ifdef SNDRV_SBAWE_EMU8000
static int snd_seq_ports[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 4};
#endif

MODULE_PARM(snd_index, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_index, "Index value for SoundBlaster 16 soundcard.");
MODULE_PARM_SYNTAX(snd_index, SNDRV_INDEX_DESC);
MODULE_PARM(snd_id, "1-" __MODULE_STRING(SNDRV_CARDS) "s");
MODULE_PARM_DESC(snd_id, "ID string for SoundBlaster 16 soundcard.");
MODULE_PARM_SYNTAX(snd_id, SNDRV_ID_DESC);
MODULE_PARM(snd_enable, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_enable, "Enable SoundBlaster 16 soundcard.");
MODULE_PARM_SYNTAX(snd_enable, SNDRV_ENABLE_DESC);
#ifdef __ISAPNP__
MODULE_PARM(snd_isapnp, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_isapnp, "ISA PnP detection for specified soundcard.");
MODULE_PARM_SYNTAX(snd_isapnp, SNDRV_ISAPNP_DESC);
#endif
MODULE_PARM(snd_port, "1-" __MODULE_STRING(SNDRV_CARDS) "l");
MODULE_PARM_DESC(snd_port, "Port # for SB16 driver.");
MODULE_PARM_SYNTAX(snd_port, SNDRV_ENABLED ",allows:{{0x220},{0x240},{0x260},{0x280}},dialog:list");
MODULE_PARM(snd_mpu_port, "1-" __MODULE_STRING(SNDRV_CARDS) "l");
MODULE_PARM_DESC(snd_mpu_port, "MPU-401 port # for SB16 driver.");
MODULE_PARM_SYNTAX(snd_mpu_port, SNDRV_ENABLED ",allows:{{0x330},{0x300}},dialog:list");
MODULE_PARM(snd_fm_port, "1-" __MODULE_STRING(SNDRV_CARDS) "l");
MODULE_PARM_DESC(snd_fm_port, "FM port # for SB16 PnP driver.");
MODULE_PARM_SYNTAX(snd_fm_port, SNDRV_ENABLED ",allows:{{0x388},{0x38c},{0x390},{0x394}},dialog:list");
#ifdef SNDRV_SBAWE_EMU8000
MODULE_PARM(snd_awe_port, "1-" __MODULE_STRING(SNDRV_CARDS) "l");
MODULE_PARM_DESC(snd_awe_port, "AWE port # for SB16 PnP driver.");
MODULE_PARM_SYNTAX(snd_awe_port, SNDRV_ENABLED ",allows:{{0x620},{0x640},{0x660},{0x680}},dialog:list");
#endif
MODULE_PARM(snd_irq, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_irq, "IRQ # for SB16 driver.");
MODULE_PARM_SYNTAX(snd_irq, SNDRV_IRQ_DESC);
MODULE_PARM(snd_dma8, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_dma8, "8-bit DMA # for SB16 driver.");
MODULE_PARM_SYNTAX(snd_dma8, SNDRV_DMA8_DESC);
MODULE_PARM(snd_dma16, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_dma16, "16-bit DMA # for SB16 driver.");
MODULE_PARM_SYNTAX(snd_dma16, SNDRV_DMA16_DESC);
MODULE_PARM(snd_mic_agc, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_mic_agc, "Mic Auto-Gain-Control switch.");
MODULE_PARM_SYNTAX(snd_mic_agc, SNDRV_ENABLED "," SNDRV_BOOLEAN_TRUE_DESC);
#ifdef CONFIG_SND_SB16_CSP
MODULE_PARM(snd_csp, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_csp, "ASP/CSP chip support.");
MODULE_PARM_SYNTAX(snd_csp, SNDRV_ENABLED "," SNDRV_ENABLE_DESC);
#endif
#ifdef SNDRV_SBAWE_EMU8000
MODULE_PARM(snd_seq_ports, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(snd_seq_ports, "Number of sequencer ports for WaveTable synth.");
MODULE_PARM_SYNTAX(snd_seq_ports, SNDRV_ENABLED ",allows:{{0,8}},skill:advanced");
#endif

struct snd_sb16 {
	struct resource *fm_res;	/* used to block FM i/o region for legacy cards */
#ifdef __ISAPNP__
	struct isapnp_dev *dev;
#ifdef SNDRV_SBAWE_EMU8000
	struct isapnp_dev *devwt;
#endif
#endif
};

static snd_card_t *snd_sb16_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;

#ifdef __ISAPNP__

static struct isapnp_card *snd_sb16_isapnp_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
static const struct isapnp_card_id *snd_sb16_isapnp_id[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;

#define ISAPNP_SB16(_va, _vb, _vc, _device, _audio) \
	{ \
		ISAPNP_CARD_ID(_va, _vb, _vc, _device), \
		devs : { ISAPNP_DEVICE_ID(_va, _vb, _vc, _audio), } \
	}
#define ISAPNP_SBAWE(_va, _vb, _vc, _device, _audio, _awe) \
	{ \
		ISAPNP_CARD_ID(_va, _vb, _vc, _device), \
		devs : { ISAPNP_DEVICE_ID(_va, _vb, _vc, _audio), \
			 ISAPNP_DEVICE_ID(_va, _vb, _vc, _awe), } \
	}

static struct isapnp_card_id snd_sb16_pnpids[] __devinitdata = {
#ifndef SNDRV_SBAWE
	/* Sound Blaster 16 PnP */
	ISAPNP_SB16('C','T','L',0x0024,0x0031),
	/* Sound Blaster 16 PnP */
	ISAPNP_SB16('C','T','L',0x0026,0x0031),
	/* Sound Blaster 16 PnP */
	ISAPNP_SB16('C','T','L',0x0027,0x0031),
	/* Sound Blaster 16 PnP */
	ISAPNP_SB16('C','T','L',0x0028,0x0031),
	/* Sound Blaster 16 PnP */
	ISAPNP_SB16('C','T','L',0x0029,0x0031),
	/* Sound Blaster 16 PnP */
	ISAPNP_SB16('C','T','L',0x002a,0x0031),
	/* Sound Blaster 16 PnP */
	/* Note: This card has also a CTL0051:StereoEnhance device!!! */
	ISAPNP_SB16('C','T','L',0x002b,0x0031),
	/* Sound Blaster 16 PnP */
	ISAPNP_SB16('C','T','L',0x002c,0x0031),	
	/* Sound Blaster Vibra16S */
	ISAPNP_SB16('C','T','L',0x0051,0x0001),
	/* Sound Blaster Vibra16C */
	ISAPNP_SB16('C','T','L',0x0070,0x0001),
	/* Sound Blaster Vibra16CL - added by [e-mail] */
	ISAPNP_SB16('C','T','L',0x0080,0x0041),
	/* Sound Blaster Vibra16X */
	ISAPNP_SB16('C','T','L',0x00f0,0x0043),
#else  /* SNDRV_SBAWE defined */
	/* Sound Blaster AWE 32 PnP */
	ISAPNP_SBAWE('C','T','L',0x0035,0x0031,0x0021),
	/* Sound Blaster AWE 32 PnP */
	ISAPNP_SBAWE('C','T','L',0x0039,0x0031,0x0021),
	/* Sound Blaster AWE 32 PnP */
	ISAPNP_SBAWE('C','T','L',0x0042,0x0031,0x0021),
	/* Sound Blaster AWE 32 PnP */
	ISAPNP_SBAWE('C','T','L',0x0043,0x0031,0x0021),
	/* Sound Blaster AWE 32 PnP */
	/* Note: This card has also a CTL0051:StereoEnhance device!!! */
	ISAPNP_SBAWE('C','T','L',0x0044,0x0031,0x0021),
	/* Sound Blaster AWE 32 PnP */
	/* Note: This card has also a CTL0051:StereoEnhance device!!! */
	ISAPNP_SBAWE('C','T','L',0x0045,0x0031,0x0021),
	/* Sound Blaster AWE 32 PnP */
	ISAPNP_SBAWE('C','T','L',0x0047,0x0031,0x0021),
	/* Sound Blaster AWE 32 PnP */
	ISAPNP_SBAWE('C','T','L',0x0048,0x0031,0x0021),
	/* Sound Blaster AWE 32 PnP */
	ISAPNP_SBAWE('C','T','L',0x0054,0x0031,0x0021),
	/* Sound Blaster AWE 32 PnP */
	ISAPNP_SBAWE('C','T','L',0x009a,0x0041,0x0021),
	/* Sound Blaster AWE 32 PnP */
	ISAPNP_SBAWE('C','T','L',0x009c,0x0041,0x0021),
	/* Sound Blaster 32 PnP */
	ISAPNP_SBAWE('C','T','L',0x009f,0x0041,0x0021),
	/* Sound Blaster AWE 64 PnP */
	ISAPNP_SBAWE('C','T','L',0x009d,0x0042,0x0022),
	/* Sound Blaster AWE 64 PnP Gold */
	ISAPNP_SBAWE('C','T','L',0x009e,0x0044,0x0023),
	/* Sound Blaster AWE 64 PnP Gold */
	ISAPNP_SBAWE('C','T','L',0x00b2,0x0044,0x0023),
	/* Sound Blaster AWE 64 PnP */
	ISAPNP_SBAWE('C','T','L',0x00c1,0x0042,0x0022),
	/* Sound Blaster AWE 64 PnP */
	ISAPNP_SBAWE('C','T','L',0x00c3,0x0045,0x0022),
	/* Sound Blaster AWE 64 PnP */
	ISAPNP_SBAWE('C','T','L',0x00c5,0x0045,0x0022),
	/* Sound Blaster AWE 64 PnP */
	ISAPNP_SBAWE('C','T','L',0x00c7,0x0045,0x0022),
	/* Sound Blaster AWE 64 PnP */
	ISAPNP_SBAWE('C','T','L',0x00e4,0x0045,0x0022),
	/* Sound Blaster AWE 64 PnP */
	ISAPNP_SBAWE('C','T','L',0x00e9,0x0045,0x0022),
	/* Sound Blaster 16 PnP (AWE) */
	ISAPNP_SBAWE('C','T','L',0x00ed,0x0041,0x0070),
	/* Generic entries */
	ISAPNP_SBAWE('C','T','L',ISAPNP_ANY_ID,0x0031,0x0021),
	ISAPNP_SBAWE('C','T','L',ISAPNP_ANY_ID,0x0041,0x0021),
	ISAPNP_SBAWE('C','T','L',ISAPNP_ANY_ID,0x0042,0x0022),
	ISAPNP_SBAWE('C','T','L',ISAPNP_ANY_ID,0x0044,0x0023),
	ISAPNP_SBAWE('C','T','L',ISAPNP_ANY_ID,0x0045,0x0022),
#endif /* SNDRV_SBAWE */
	{ ISAPNP_CARD_END, }
};

ISAPNP_CARD_TABLE(snd_sb16_pnpids);

static int __init snd_sb16_isapnp(int dev, struct snd_sb16 *acard)
{
	const struct isapnp_card_id *id = snd_sb16_isapnp_id[dev];
	struct isapnp_card *card = snd_sb16_isapnp_cards[dev];
	struct isapnp_dev *pdev;

	acard->dev = isapnp_find_dev(card, id->devs[0].vendor, id->devs[0].function, NULL);
	if (acard->dev->active) {
		acard->dev = NULL;
		return -EBUSY;
	}
#ifdef SNDRV_SBAWE_EMU8000
	acard->devwt = isapnp_find_dev(card, id->devs[1].vendor, id->devs[1].function, NULL);
	if (acard->devwt->active) {
		acard->dev = acard->devwt = NULL;
		return -EBUSY;
	}
#endif	
	/* Audio initialization */
	pdev = acard->dev;
	if (pdev->prepare(pdev) < 0)
		return -EAGAIN;
	if (snd_port[dev] != SNDRV_AUTO_PORT)
		isapnp_resource_change(&pdev->resource[0], snd_port[dev], 16);
	if (snd_mpu_port[dev] != SNDRV_AUTO_PORT)
		isapnp_resource_change(&pdev->resource[1], snd_mpu_port[dev], 2);
	if (snd_fm_port[dev] != SNDRV_AUTO_PORT)
		isapnp_resource_change(&pdev->resource[2], snd_fm_port[dev], 4);
	if (snd_dma8[dev] != SNDRV_AUTO_DMA)
		isapnp_resource_change(&pdev->dma_resource[0], snd_dma8[dev], 1);
	if (snd_dma16[dev] != SNDRV_AUTO_DMA)
		isapnp_resource_change(&pdev->dma_resource[1], snd_dma16[dev], 1);
	if (snd_irq[dev] != SNDRV_AUTO_IRQ)
		isapnp_resource_change(&pdev->irq_resource[0], snd_irq[dev], 1);
	if (pdev->activate(pdev) < 0) {
		printk(KERN_ERR PFX "isapnp configure failure (out of resources?)\n");
		return -EBUSY;
	}
	snd_port[dev] = pdev->resource[0].start;
	snd_mpu_port[dev] = pdev->resource[1].start;
	snd_fm_port[dev] = pdev->resource[2].start;
	snd_dma8[dev] = pdev->dma_resource[0].start;
	snd_dma16[dev] = pdev->dma_resource[1].start;
	snd_irq[dev] = pdev->irq_resource[0].start;
	snd_printdd("isapnp SB16: port=0x%lx, mpu port=0x%lx, fm port=0x%lx\n",
			snd_port[dev], snd_mpu_port[dev], snd_fm_port[dev]);
	snd_printdd("isapnp SB16: dma1=%i, dma2=%i, irq=%i\n",
			snd_dma8[dev], snd_dma16[dev], snd_irq[dev]);
#ifdef SNDRV_SBAWE_EMU8000
	/* WaveTable initialization */
	pdev = acard->devwt;
	if (pdev->prepare(pdev)<0) {
		acard->dev->deactivate(acard->dev);
		return -EAGAIN;
	}
	if (snd_awe_port[dev] != SNDRV_AUTO_PORT) {
		isapnp_resource_change(&pdev->resource[0], snd_awe_port[dev], 4);
		isapnp_resource_change(&pdev->resource[1], snd_awe_port[dev] + 0x400, 4);
		isapnp_resource_change(&pdev->resource[2], snd_awe_port[dev] + 0x800, 4);
	}
	if (pdev->activate(pdev)<0) {
		printk(KERN_ERR PFX "WaveTable isapnp configure failure (out of resources?)\n");
		acard->dev->deactivate(acard->dev);		
		return -EBUSY;
	}
	snd_awe_port[dev] = pdev->resource[0].start;
	snd_printdd("isapnp SB16: wavetable port=0x%lx\n", pdev->resource[0].start);
#endif
	return 0;
}

static void snd_sb16_deactivate(struct snd_sb16 *acard)
{
	if (acard->dev) {
		acard->dev->deactivate(acard->dev);
		acard->dev = NULL;
	}
#ifdef SNDRV_SBAWE_EMU8000
	if (acard->devwt) {
		acard->devwt->deactivate(acard->devwt);
		acard->devwt = NULL;
	}
#endif
}

#endif /* __ISAPNP__ */