355 lines
9.7 KiB
C
355 lines
9.7 KiB
C
/*
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* sound/oss/sb_card.c
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*
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* Detection routine for the ISA Sound Blaster and compatable sound
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* cards.
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*
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* This file is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
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* Version 2 (June 1991). See the "COPYING" file distributed with this
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* software for more info.
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*
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* This is a complete rewrite of the detection routines. This was
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* prompted by the PnP API change during v2.5 and the ugly state the
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* code was in.
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*
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* Copyright (C) by Paul Laufer 2002. Based on code originally by
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* Hannu Savolainen which was modified by many others over the
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* years. Authors specifically mentioned in the previous version were:
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* Daniel Stone, Alessandro Zummo, Jeff Garzik, Arnaldo Carvalho de
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* Melo, Daniel Church, and myself.
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*
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* 02-05-2003 Original Release, Paul Laufer <paul@laufernet.com>
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* 02-07-2003 Bug made it into first release. Take two.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include "sound_config.h"
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#include "sb_mixer.h"
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#include "sb.h"
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#ifdef CONFIG_PNP
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#include <linux/pnp.h>
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#endif /* CONFIG_PNP */
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#include "sb_card.h"
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MODULE_DESCRIPTION("OSS Soundblaster ISA PnP and legacy sound driver");
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MODULE_LICENSE("GPL");
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extern void *smw_free;
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static int __initdata mpu_io = 0;
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static int __initdata io = -1;
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static int __initdata irq = -1;
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static int __initdata dma = -1;
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static int __initdata dma16 = -1;
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static int __initdata type = 0; /* Can set this to a specific card type */
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static int __initdata esstype = 0; /* ESS chip type */
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static int __initdata acer = 0; /* Do acer notebook init? */
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static int __initdata sm_games = 0; /* Logitech soundman games? */
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static struct sb_card_config *legacy = NULL;
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#ifdef CONFIG_PNP
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static int pnp_registered;
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static int __initdata pnp = 1;
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/*
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static int __initdata uart401 = 0;
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*/
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#else
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static int __initdata pnp = 0;
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#endif
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module_param(io, int, 000);
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MODULE_PARM_DESC(io, "Soundblaster i/o base address (0x220,0x240,0x260,0x280)");
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module_param(irq, int, 000);
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MODULE_PARM_DESC(irq, "IRQ (5,7,9,10)");
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module_param(dma, int, 000);
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MODULE_PARM_DESC(dma, "8-bit DMA channel (0,1,3)");
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module_param(dma16, int, 000);
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MODULE_PARM_DESC(dma16, "16-bit DMA channel (5,6,7)");
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module_param(mpu_io, int, 000);
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MODULE_PARM_DESC(mpu_io, "MPU base address");
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module_param(type, int, 000);
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MODULE_PARM_DESC(type, "You can set this to specific card type (doesn't " \
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"work with pnp)");
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module_param(sm_games, int, 000);
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MODULE_PARM_DESC(sm_games, "Enable support for Logitech soundman games " \
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"(doesn't work with pnp)");
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module_param(esstype, int, 000);
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MODULE_PARM_DESC(esstype, "ESS chip type (doesn't work with pnp)");
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module_param(acer, int, 000);
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MODULE_PARM_DESC(acer, "Set this to detect cards in some ACER notebooks "\
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"(doesn't work with pnp)");
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#ifdef CONFIG_PNP
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module_param(pnp, int, 000);
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MODULE_PARM_DESC(pnp, "Went set to 0 will disable detection using PnP. "\
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"Default is 1.\n");
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/* Not done yet.... */
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/*
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module_param(uart401, int, 000);
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MODULE_PARM_DESC(uart401, "When set to 1, will attempt to detect and enable"\
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"the mpu on some clones");
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*/
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#endif /* CONFIG_PNP */
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/* OSS subsystem card registration shared by PnP and legacy routines */
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static int sb_register_oss(struct sb_card_config *scc, struct sb_module_options *sbmo)
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{
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if (!request_region(scc->conf.io_base, 16, "soundblaster")) {
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printk(KERN_ERR "sb: ports busy.\n");
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kfree(scc);
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return -EBUSY;
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}
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if (!sb_dsp_detect(&scc->conf, 0, 0, sbmo)) {
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release_region(scc->conf.io_base, 16);
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printk(KERN_ERR "sb: Failed DSP Detect.\n");
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kfree(scc);
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return -ENODEV;
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}
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if(!sb_dsp_init(&scc->conf, THIS_MODULE)) {
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printk(KERN_ERR "sb: Failed DSP init.\n");
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kfree(scc);
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return -ENODEV;
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}
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if(scc->mpucnf.io_base > 0) {
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scc->mpu = 1;
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printk(KERN_INFO "sb: Turning on MPU\n");
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if(!probe_sbmpu(&scc->mpucnf, THIS_MODULE))
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scc->mpu = 0;
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}
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return 1;
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}
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static void sb_unload(struct sb_card_config *scc)
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{
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sb_dsp_unload(&scc->conf, 0);
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if(scc->mpu)
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unload_sbmpu(&scc->mpucnf);
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kfree(scc);
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}
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/* Register legacy card with OSS subsystem */
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static int __init sb_init_legacy(void)
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{
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struct sb_module_options sbmo = {0};
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if((legacy = kzalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
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printk(KERN_ERR "sb: Error: Could not allocate memory\n");
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return -ENOMEM;
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}
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legacy->conf.io_base = io;
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legacy->conf.irq = irq;
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legacy->conf.dma = dma;
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legacy->conf.dma2 = dma16;
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legacy->conf.card_subtype = type;
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legacy->mpucnf.io_base = mpu_io;
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legacy->mpucnf.irq = -1;
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legacy->mpucnf.dma = -1;
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legacy->mpucnf.dma2 = -1;
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sbmo.esstype = esstype;
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sbmo.sm_games = sm_games;
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sbmo.acer = acer;
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return sb_register_oss(legacy, &sbmo);
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}
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#ifdef CONFIG_PNP
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/* Populate the OSS subsystem structures with information from PnP */
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static void sb_dev2cfg(struct pnp_dev *dev, struct sb_card_config *scc)
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{
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scc->conf.io_base = -1;
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scc->conf.irq = -1;
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scc->conf.dma = -1;
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scc->conf.dma2 = -1;
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scc->mpucnf.io_base = -1;
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scc->mpucnf.irq = -1;
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scc->mpucnf.dma = -1;
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scc->mpucnf.dma2 = -1;
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/* All clones layout their PnP tables differently and some use
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different logical devices for the MPU */
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if(!strncmp("CTL",scc->card_id,3)) {
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scc->conf.io_base = pnp_port_start(dev,0);
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scc->conf.irq = pnp_irq(dev,0);
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scc->conf.dma = pnp_dma(dev,0);
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scc->conf.dma2 = pnp_dma(dev,1);
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scc->mpucnf.io_base = pnp_port_start(dev,1);
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return;
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}
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if(!strncmp("tBA",scc->card_id,3)) {
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scc->conf.io_base = pnp_port_start(dev,0);
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scc->conf.irq = pnp_irq(dev,0);
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scc->conf.dma = pnp_dma(dev,0);
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scc->conf.dma2 = pnp_dma(dev,1);
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return;
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}
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if(!strncmp("ESS",scc->card_id,3)) {
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scc->conf.io_base = pnp_port_start(dev,0);
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scc->conf.irq = pnp_irq(dev,0);
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scc->conf.dma = pnp_dma(dev,0);
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scc->conf.dma2 = pnp_dma(dev,1);
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scc->mpucnf.io_base = pnp_port_start(dev,2);
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return;
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}
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if(!strncmp("CMI",scc->card_id,3)) {
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scc->conf.io_base = pnp_port_start(dev,0);
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scc->conf.irq = pnp_irq(dev,0);
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scc->conf.dma = pnp_dma(dev,0);
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scc->conf.dma2 = pnp_dma(dev,1);
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return;
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}
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if(!strncmp("RWB",scc->card_id,3)) {
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scc->conf.io_base = pnp_port_start(dev,0);
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scc->conf.irq = pnp_irq(dev,0);
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scc->conf.dma = pnp_dma(dev,0);
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return;
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}
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if(!strncmp("ALS",scc->card_id,3)) {
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if(!strncmp("ALS0007",scc->card_id,7)) {
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scc->conf.io_base = pnp_port_start(dev,0);
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scc->conf.irq = pnp_irq(dev,0);
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scc->conf.dma = pnp_dma(dev,0);
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} else {
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scc->conf.io_base = pnp_port_start(dev,0);
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scc->conf.irq = pnp_irq(dev,0);
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scc->conf.dma = pnp_dma(dev,1);
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scc->conf.dma2 = pnp_dma(dev,0);
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}
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return;
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}
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if(!strncmp("RTL",scc->card_id,3)) {
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scc->conf.io_base = pnp_port_start(dev,0);
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scc->conf.irq = pnp_irq(dev,0);
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scc->conf.dma = pnp_dma(dev,1);
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scc->conf.dma2 = pnp_dma(dev,0);
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}
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}
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static unsigned int sb_pnp_devices;
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/* Probe callback function for the PnP API */
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static int sb_pnp_probe(struct pnp_card_link *card, const struct pnp_card_device_id *card_id)
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{
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struct sb_card_config *scc;
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struct sb_module_options sbmo = {0}; /* Default to 0 for PnP */
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struct pnp_dev *dev = pnp_request_card_device(card, card_id->devs[0].id, NULL);
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if(!dev){
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return -EBUSY;
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}
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if((scc = kzalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
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printk(KERN_ERR "sb: Error: Could not allocate memory\n");
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return -ENOMEM;
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}
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printk(KERN_INFO "sb: PnP: Found Card Named = \"%s\", Card PnP id = " \
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"%s, Device PnP id = %s\n", card->card->name, card_id->id,
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dev->id->id);
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scc->card_id = card_id->id;
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scc->dev_id = dev->id->id;
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sb_dev2cfg(dev, scc);
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printk(KERN_INFO "sb: PnP: Detected at: io=0x%x, irq=%d, " \
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"dma=%d, dma16=%d\n", scc->conf.io_base, scc->conf.irq,
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scc->conf.dma, scc->conf.dma2);
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pnp_set_card_drvdata(card, scc);
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sb_pnp_devices++;
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return sb_register_oss(scc, &sbmo);
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}
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static void sb_pnp_remove(struct pnp_card_link *card)
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{
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struct sb_card_config *scc = pnp_get_card_drvdata(card);
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if(!scc)
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return;
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printk(KERN_INFO "sb: PnP: Removing %s\n", scc->card_id);
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sb_unload(scc);
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}
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static struct pnp_card_driver sb_pnp_driver = {
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.name = "OSS SndBlstr", /* 16 character limit */
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.id_table = sb_pnp_card_table,
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.probe = sb_pnp_probe,
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.remove = sb_pnp_remove,
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};
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MODULE_DEVICE_TABLE(pnp_card, sb_pnp_card_table);
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#endif /* CONFIG_PNP */
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static void sb_unregister_all(void)
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{
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#ifdef CONFIG_PNP
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if (pnp_registered)
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pnp_unregister_card_driver(&sb_pnp_driver);
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#endif
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}
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static int __init sb_init(void)
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{
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int lres = 0;
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int pres = 0;
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printk(KERN_INFO "sb: Init: Starting Probe...\n");
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if(io != -1 && irq != -1 && dma != -1) {
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printk(KERN_INFO "sb: Probing legacy card with io=%x, "\
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"irq=%d, dma=%d, dma16=%d\n",io, irq, dma, dma16);
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lres = sb_init_legacy();
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} else if((io != -1 || irq != -1 || dma != -1) ||
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(!pnp && (io == -1 && irq == -1 && dma == -1)))
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printk(KERN_ERR "sb: Error: At least io, irq, and dma "\
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"must be set for legacy cards.\n");
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#ifdef CONFIG_PNP
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if(pnp) {
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int err = pnp_register_card_driver(&sb_pnp_driver);
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if (!err)
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pnp_registered = 1;
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pres = sb_pnp_devices;
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}
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#endif
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printk(KERN_INFO "sb: Init: Done\n");
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/* If either PnP or Legacy registered a card then return
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* success */
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if (pres == 0 && lres <= 0) {
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sb_unregister_all();
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return -ENODEV;
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}
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return 0;
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}
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static void __exit sb_exit(void)
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{
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printk(KERN_INFO "sb: Unloading...\n");
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/* Unload legacy card */
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if (legacy) {
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printk (KERN_INFO "sb: Unloading legacy card\n");
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sb_unload(legacy);
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}
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sb_unregister_all();
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vfree(smw_free);
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smw_free = NULL;
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}
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module_init(sb_init);
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module_exit(sb_exit);
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