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SubjectOSS Sound Blaster sb_card.c rewrite (PnP, module options, etc)
This is a rewrite of sound/oss/sb_card.c which handles detection of
Soundblaster ISA cards and clones. This rewrite uses the new PnP and
module APIs.

Attached are two files sb_card.c and sb_card.h that are drop in
replacements for sb_card.c. Verified to work with current bk.

Please test if you have ISA Soundblaster and clone cards and provide
feedback.

Thanks,
Paul Laufer
/*
* sound/oss/sb_card.c
*
* Detection routine for the ISA Sound Blaster and compatable sound
* cards.
*
* This file is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
* Version 2 (June 1991). See the "COPYING" file distributed with this
* software for more info.
*
* This is a complete rewrite of the detection routines. This was
* prompted by the PnP API change during v2.5 and the ugly state the
* code was in.
*
* Copyright (C) by Paul Laufer 2002. Based on code originally by
* Hannu Savolainen which was modified by many others over the
* years. Authors specifically mentioned in the previous version were:
* Daniel Stone, Alessandro Zummo, Jeff Garzik, Arnaldo Carvalho de
* Melo, Daniel Church, and myself.
*
* 02-05-2003 Original Release, Paul Laufer <paul@laufernet.com>
*/

#include <linux/config.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#ifdef CONFIG_MCA
#include <linux/mca.h>
#endif /* CONFIG_MCA */
#include "sound_config.h"
#include "sb_mixer.h"
#include "sb.h"
#include "sb_card.h"

#ifdef CONFIG_PNP_CARD
#include <linux/pnp.h>
#endif

MODULE_DESCRIPTION("OSS Soundblaster ISA PnP and legacy sound driver");
MODULE_LICENSE("GPL");

extern void *smw_free;

static int __initdata mpu_io = 0;
static int __initdata io = -1;
static int __initdata irq = -1;
static int __initdata dma = -1;
static int __initdata dma16 = -1;
static int __initdata type = 0; /* Can set this to a specific card type */
static int __initdata esstype = 0; /* ESS chip type */
static int __initdata acer = 0; /* Do acer notebook init? */
static int __initdata sm_games = 0; /* Logitech soundman games? */

struct sb_card_config *legacy = NULL;

#ifdef CONFIG_PNP_CARD
static int __initdata pnp = 1;
/*
static int __initdata uart401 = 0;
*/
#else
static int __initdata pnp = 0;
#endif

module_param(io, int, 000);
MODULE_PARM_DESC(io, "Soundblaster i/o base address (0x220,0x240,0x260,0x280)");
module_param(irq, int, 000);
MODULE_PARM_DESC(irq, "IRQ (5,7,9,10)");
module_param(dma, int, 000);
MODULE_PARM_DESC(dma, "8-bit DMA channel (0,1,3)");
module_param(dma16, int, 000);
MODULE_PARM_DESC(dma16, "16-bit DMA channel (5,6,7)");
module_param(mpu_io, int, 000);
MODULE_PARM_DESC(mpu_io, "MPU base address");
module_param(type, int, 000);
MODULE_PARM_DESC(type, "You can set this to specific card type (doesn't " \
"work with pnp)");
module_param(sm_games, int, 000);
MODULE_PARM_DESC(sm_games, "Enable support for Logitech soundman games " \
"(doesn't work with pnp)");
module_param(esstype, int, 000);
MODULE_PARM_DESC(esstype, "ESS chip type (doesn't work with pnp)");
module_param(acer, int, 000);
MODULE_PARM_DESC(acer, "Set this to detect cards in some ACER notebooks "\
"(doesn't work with pnp)");

#ifdef CONFIG_PNP_CARD
module_param(pnp, int, 000);
MODULE_PARM_DESC(pnp, "Went set to 0 will disable detection using PnP. "\
"Default is 1.\n");
/* Not done yet.... */
/*
module_param(uart401, int, 000);
MODULE_PARM_DESC(uart401, "When set to 1, will attempt to detect and enable"\
"the mpu on some clones");
*/
#endif /* CONFIG_PNP_CARD */

/* OSS subsystem card registration shared by PnP and legacy routines */
static int sb_register_oss(struct sb_card_config *scc, struct sb_module_options *sbmo)
{
if(!sb_dsp_detect(&scc->conf, 0, 0, sbmo)) {
printk(KERN_ERR "sb: Failed DSP Detect.\n");
kfree(scc);
return -ENODEV;
}
if(!sb_dsp_init(&scc->conf, THIS_MODULE)) {
printk(KERN_ERR "sb: Failed DSP init.\n");
kfree(scc);
return -ENODEV;
}
if(scc->mpucnf.io_base > 0) {
scc->mpu = 1;
printk(KERN_INFO "sb: Turning on MPU\n");
if(!probe_sbmpu(&scc->mpucnf, THIS_MODULE))
scc->mpu = 0;
}

return 1;
}

static void sb_unload(struct sb_card_config *scc)
{
sb_dsp_unload(&scc->conf, 0);
if(scc->mpu)
unload_sbmpu(&scc->mpucnf);
kfree(scc);
}

/* Register legacy card with OSS subsystem */
static int sb_init_legacy(void)
{
struct sb_module_options sbmo = {0};

if((legacy = kmalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
printk(KERN_ERR "sb: Error: Could not allocate memory\n");
return -ENOMEM;
}
memset(legacy, 0, sizeof(struct sb_card_config));

legacy->conf.io_base = io;
legacy->conf.irq = irq;
legacy->conf.dma = dma;
legacy->conf.dma2 = dma16;
legacy->conf.card_subtype = type;

legacy->mpucnf.io_base = mpu_io;
legacy->mpucnf.irq = -1;
legacy->mpucnf.dma = -1;
legacy->mpucnf.dma2 = -1;

sbmo.esstype = esstype;
sbmo.sm_games = sm_games;
sbmo.acer = acer;

return sb_register_oss(legacy, &sbmo);
}

#ifdef CONFIG_PNP_CARD

/* Populate the OSS subsystem structures with information from PnP */
static void sb_dev2cfg(struct pnp_dev *dev, struct sb_card_config *scc)
{
scc->conf.io_base = -1;
scc->conf.irq = -1;
scc->conf.dma = -1;
scc->conf.dma2 = -1;
scc->mpucnf.io_base = -1;
scc->mpucnf.irq = -1;
scc->mpucnf.dma = -1;
scc->mpucnf.dma2 = -1;

/* All clones layout their PnP tables differently and some use
different logical devices for the MPU */
if(!strncmp("CTL",scc->card_id,3)) {
scc->conf.io_base = pnp_port_start(dev,0);
scc->conf.irq = pnp_irq(dev,0);
scc->conf.dma = pnp_dma(dev,0);
scc->conf.dma2 = pnp_dma(dev,1);
scc->mpucnf.io_base = pnp_port_start(dev,1);
return;
}
if(!strncmp("ESS",scc->card_id,3)) {
scc->conf.io_base = pnp_port_start(dev,0);
scc->conf.irq = pnp_irq(dev,0);
scc->conf.dma = pnp_dma(dev,0);
scc->conf.dma2 = pnp_dma(dev,1);
scc->mpucnf.io_base = pnp_port_start(dev,2);
return;
}
if(!strncmp("CMI",scc->card_id,3)) {
scc->conf.io_base = pnp_port_start(dev,0);
scc->conf.irq = pnp_irq(dev,0);
scc->conf.dma = pnp_dma(dev,0);
scc->conf.dma2 = pnp_dma(dev,1);
return;
}
if(!strncmp("RWB",scc->card_id,3)) {
scc->conf.io_base = pnp_port_start(dev,0);
scc->conf.irq = pnp_irq(dev,0);
scc->conf.dma = pnp_dma(dev,0);
return;
}
if(!strncmp("ALS",scc->card_id,3)) {
if(!strncmp("ALS0007",scc->card_id,7)) {
scc->conf.io_base = pnp_port_start(dev,0);
scc->conf.irq = pnp_irq(dev,0);
scc->conf.dma = pnp_dma(dev,0);
} else {
scc->conf.io_base = pnp_port_start(dev,0);
scc->conf.irq = pnp_irq(dev,0);
scc->conf.dma = pnp_dma(dev,1);
scc->conf.dma2 = pnp_dma(dev,0);
}
return;
}
if(!strncmp("RTL",scc->card_id,3)) {
scc->conf.io_base = pnp_port_start(dev,0);
scc->conf.irq = pnp_irq(dev,0);
scc->conf.dma = pnp_dma(dev,1);
scc->conf.dma2 = pnp_dma(dev,0);
}
}

/* Probe callback function for the PnP API */
static int sb_pnp_probe(struct pnp_card *card, const struct pnp_card_device_id *card_id)
{
struct sb_card_config *scc;
struct sb_module_options sbmo = {0}; /* Default to 0 for PnP */
struct pnp_dev *dev = pnp_request_card_device(card, card_id->devs[0].id, NULL);

if(!dev){
return -EBUSY;
}

if((scc = kmalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
printk(KERN_ERR "sb: Error: Could not allocate memory\n");
return -ENOMEM;
}
memset(scc, 0, sizeof(struct sb_card_config));

printk(KERN_INFO "sb: PnP: Found Card Named = \"%s\", Card PnP id = " \
"%s, Device PnP id = %s\n", dev->card->name, card_id->id,
dev->id->id);

scc->card_id = card_id->id;
scc->dev_id = dev->id->id;
sb_dev2cfg(dev, scc);

printk(KERN_INFO "sb: PnP: Detected at: io=0x%x, irq=%d, " \
"dma=%d, dma16=%d\n", scc->conf.io_base, scc->conf.irq,
scc->conf.dma, scc->conf.dma2);

pnpc_set_drvdata(card, scc);

return sb_register_oss(scc, &sbmo);
}

static void sb_pnp_remove(struct pnp_card *card)
{
struct sb_card_config *scc = pnpc_get_drvdata(card);

if(!scc)
return;

printk(KERN_INFO "sb: PnP: Removing %s\n", scc->card_id);

sb_unload(scc);
}

static struct pnpc_driver sb_pnp_driver = {
.name = "OSS SndBlstr", /* 16 character limit */
.id_table = sb_pnp_card_table,
.probe = sb_pnp_probe,
.remove = sb_pnp_remove,
};
#endif /* CONFIG_PNP_CARD */

static int __init sb_init(void)
{
int lres = 0;
int pres = 0;

printk(KERN_INFO "sb: Init: Starting Probe...\n");

if(io != -1 && irq != -1 && dma != -1) {
printk(KERN_INFO "sb: Probing legacy card with io=%x, "\
"irq=%d, dma=%d, dma16=%d\n",io, irq, dma, dma16);
lres = sb_init_legacy();
} else if((io != -1 || irq != -1 || dma != -1) ||
(!pnp && (io == -1 && irq == -1 && dma == -1)))
printk(KERN_ERR "sb: Error: At least io, irq, and dma "\
"must be set for legacy cards.\n");

#ifdef CONFIG_PNP_CARD
if(pnp) {
pres = pnpc_register_driver(&sb_pnp_driver);
}
#endif
printk(KERN_INFO "sb: Init: Done\n");

/* If either PnP or Legacy registered a card then return
* success */
return (pres > 0 || lres > 0) ? 0 : -ENODEV;
}

static void __exit sb_exit(void)
{
printk(KERN_INFO "sb: Unloading...\n");

/* Unload legacy card */
if (legacy) {
printk (KERN_INFO "sb: Unloading legacy card\n");
sb_unload(legacy);
}

#ifdef CONFIG_PNP_CARD
pnpc_unregister_driver(&sb_pnp_driver);
#endif

if (smw_free) {
vfree(smw_free);
smw_free = NULL;
}
}

module_init(sb_init);
module_exit(sb_exit);
/*
* sound/oss/sb_card.h
*
* This file is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
* Version 2 (June 1991). See the "COPYING" file distributed with this
* software for more info.
*
* 02-05-2002 Original Release, Paul Laufer <paul@laufernet.com>
*/

struct sb_card_config {
struct address_info conf;
struct address_info mpucnf;
const char *card_id;
const char *dev_id;
int mpu;
};

#ifdef CONFIG_PNP_CARD

/*
* SoundBlaster PnP tables and structures.
*/

/* Card PnP ID Table */
static struct pnp_card_device_id sb_pnp_card_table[] = {
/* Sound Blaster 16 */
{.id = "CTL0024", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster 16 */
{.id = "CTL0025", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster 16 */
{.id = "CTL0026", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster 16 */
{.id = "CTL0027", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster 16 */
{.id = "CTL0028", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster 16 */
{.id = "CTL0029", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster 16 */
{.id = "CTL002a", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster 16 */
{.id = "CTL002b", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster 16 */
{.id = "CTL002c", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster 16 */
{.id = "CTL00ed", .driver_data = 0, devs : { {.id="CTL0041"}, } },
/* Sound Blaster 16 */
{.id = "CTL0086", .driver_data = 0, devs : { {.id="CTL0041"}, } },
/* Sound Blaster Vibra16S */
{.id = "CTL0051", .driver_data = 0, devs : { {.id="CTL0001"}, } },
/* Sound Blaster Vibra16C */
{.id = "CTL0070", .driver_data = 0, devs : { {.id="CTL0001"}, } },
/* Sound Blaster Vibra16CL */
{.id = "CTL0080", .driver_data = 0, devs : { {.id="CTL0041"}, } },
/* Sound Blaster Vibra16CL */
{.id = "CTL00F0", .driver_data = 0, devs : { {.id="CTL0043"}, } },
/* Sound Blaster AWE 32 */
{.id = "CTL0039", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster AWE 32 */
{.id = "CTL0042", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster AWE 32 */
{.id = "CTL0043", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster AWE 32 */
{.id = "CTL0044", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster AWE 32 */
{.id = "CTL0045", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster AWE 32 */
{.id = "CTL0046", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster AWE 32 */
{.id = "CTL0047", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster AWE 32 */
{.id = "CTL0048", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster AWE 32 */
{.id = "CTL0054", .driver_data = 0, devs : { {.id="CTL0031"}, } },
/* Sound Blaster AWE 32 */
{.id = "CTL009C", .driver_data = 0, devs : { {.id="CTL0041"}, } },
/* Createive SB32 PnP */
{.id = "CTL009F", .driver_data = 0, devs : { {.id="CTL0041"}, } },
/* Sound Blaster AWE 64 */
{.id = "CTL009D", .driver_data = 0, devs : { {.id="CTL0042"}, } },
/* Sound Blaster AWE 64 Gold */
{.id = "CTL009E", .driver_data = 0, devs : { {.id="CTL0044"}, } },
/* Sound Blaster AWE 64 Gold */
{.id = "CTL00B2", .driver_data = 0, devs : { {.id="CTL0044"}, } },
/* Sound Blaster AWE 64 */
{.id = "CTL00C1", .driver_data = 0, devs : { {.id="CTL0042"}, } },
/* Sound Blaster AWE 64 */
{.id = "CTL00C3", .driver_data = 0, devs : { {.id="CTL0045"}, } },
/* Sound Blaster AWE 64 */
{.id = "CTL00C5", .driver_data = 0, devs : { {.id="CTL0045"}, } },
/* Sound Blaster AWE 64 */
{.id = "CTL00C7", .driver_data = 0, devs : { {.id="CTL0045"}, } },
/* Sound Blaster AWE 64 */
{.id = "CTL00E4", .driver_data = 0, devs : { {.id="CTL0045"}, } },
/* Sound Blaster AWE 64 */
{.id = "CTL00E9", .driver_data = 0, devs : { {.id="CTL0045"}, } },
/* ESS 1868 */
{.id = "ESS0968", .driver_data = 0, devs : { {.id="ESS0968"}, } },
/* ESS 1868 */
{.id = "ESS1868", .driver_data = 0, devs : { {.id="ESS1868"}, } },
/* ESS 1868 */
{.id = "ESS1868", .driver_data = 0, devs : { {.id="ESS8611"}, } },
/* ESS 1869 PnP AudioDrive */
{.id = "ESS0003", .driver_data = 0, devs : { {.id="ESS1869"}, } },
/* ESS 1869 */
{.id = "ESS1869", .driver_data = 0, devs : { {.id="ESS1869"}, } },
/* ESS 1878 */
{.id = "ESS1878", .driver_data = 0, devs : { {.id="ESS1878"}, } },
/* ESS 1879 */
{.id = "ESS1879", .driver_data = 0, devs : { {.id="ESS1879"}, } },
/* CMI 8330 SoundPRO */
{.id = "CMI0001", .driver_data = 0, devs : { {.id="@X@0001"},
{.id="@H@0001"},
{.id="@@@0001"}, } },
/* Diamond DT0197H */
{.id = "RWR1688", .driver_data = 0, devs : { {.id="@@@0001"},
{.id="@X@0001"},
{.id="@H@0001"}, } },
/* ALS007 */
{.id = "ALS0007", .driver_data = 0, devs : { {.id="@@@0001"},
{.id="@X@0001"},
{.id="@H@0001"}, } },
/* ALS100 */
{.id = "ALS0001", .driver_data = 0, devs : { {.id="@@@0001"},
{.id="@X@0001"},
{.id="@H@0001"}, } },
/* ALS110 */
{.id = "ALS0110", .driver_data = 0, devs : { {.id="@@@1001"},
{.id="@X@1001"},
{.id="@H@0001"}, } },
/* ALS120 */
{.id = "ALS0120", .driver_data = 0, devs : { {.id="@@@2001"},
{.id="@X@2001"},
{.id="@H@0001"}, } },
/* ALS200 */
{.id = "ALS0200", .driver_data = 0, devs : { {.id="@@@0020"},
{.id="@X@0030"},
{.id="@H@0001"}, } },
/* ALS200 */
{.id = "RTL3000", .driver_data = 0, devs : { {.id="@@@2001"},
{.id="@X@2001"},
{.id="@H@0001"}, } },
/* -end- */
{.id = "", }
};

#endif
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