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-rw-r--r--sound/oss/sb_card.c354
1 files changed, 354 insertions, 0 deletions
diff --git a/sound/oss/sb_card.c b/sound/oss/sb_card.c
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+++ b/sound/oss/sb_card.c
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+/*
+ * sound/oss/sb_card.c
+ *
+ * Detection routine for the ISA Sound Blaster and compatible 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>
+ * 02-07-2003 Bug made it into first release. Take two.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include "sound_config.h"
+#include "sb_mixer.h"
+#include "sb.h"
+#ifdef CONFIG_PNP
+#include <linux/pnp.h>
+#endif /* CONFIG_PNP */
+#include "sb_card.h"
+
+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? */
+
+static struct sb_card_config *legacy = NULL;
+
+#ifdef CONFIG_PNP
+static int pnp_registered;
+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
+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 */
+
+/* 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 (!request_region(scc->conf.io_base, 16, "soundblaster")) {
+ printk(KERN_ERR "sb: ports busy.\n");
+ kfree(scc);
+ return -EBUSY;
+ }
+
+ if (!sb_dsp_detect(&scc->conf, 0, 0, sbmo)) {
+ release_region(scc->conf.io_base, 16);
+ 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 __init sb_init_legacy(void)
+{
+ struct sb_module_options sbmo = {0};
+
+ if((legacy = kzalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
+ printk(KERN_ERR "sb: Error: Could not allocate memory\n");
+ return -ENOMEM;
+ }
+
+ 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
+
+/* 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("tBA",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("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);
+ }
+}
+
+static unsigned int sb_pnp_devices;
+
+/* Probe callback function for the PnP API */
+static int sb_pnp_probe(struct pnp_card_link *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 = kzalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
+ printk(KERN_ERR "sb: Error: Could not allocate memory\n");
+ return -ENOMEM;
+ }
+
+ printk(KERN_INFO "sb: PnP: Found Card Named = \"%s\", Card PnP id = " \
+ "%s, Device PnP id = %s\n", card->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);
+
+ pnp_set_card_drvdata(card, scc);
+ sb_pnp_devices++;
+
+ return sb_register_oss(scc, &sbmo);
+}
+
+static void sb_pnp_remove(struct pnp_card_link *card)
+{
+ struct sb_card_config *scc = pnp_get_card_drvdata(card);
+
+ if(!scc)
+ return;
+
+ printk(KERN_INFO "sb: PnP: Removing %s\n", scc->card_id);
+
+ sb_unload(scc);
+}
+
+static struct pnp_card_driver sb_pnp_driver = {
+ .name = "OSS SndBlstr", /* 16 character limit */
+ .id_table = sb_pnp_card_table,
+ .probe = sb_pnp_probe,
+ .remove = sb_pnp_remove,
+};
+MODULE_DEVICE_TABLE(pnp_card, sb_pnp_card_table);
+#endif /* CONFIG_PNP */
+
+static void sb_unregister_all(void)
+{
+#ifdef CONFIG_PNP
+ if (pnp_registered)
+ pnp_unregister_card_driver(&sb_pnp_driver);
+#endif
+}
+
+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
+ if(pnp) {
+ int err = pnp_register_card_driver(&sb_pnp_driver);
+ if (!err)
+ pnp_registered = 1;
+ pres = sb_pnp_devices;
+ }
+#endif
+ printk(KERN_INFO "sb: Init: Done\n");
+
+ /* If either PnP or Legacy registered a card then return
+ * success */
+ if (pres == 0 && lres <= 0) {
+ sb_unregister_all();
+ return -ENODEV;
+ }
+ return 0;
+}
+
+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);
+ }
+
+ sb_unregister_all();
+
+ vfree(smw_free);
+ smw_free = NULL;
+}
+
+module_init(sb_init);
+module_exit(sb_exit);
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