- 根目录:
- sound
- pci
- au88x0
- au88x0.c
/*
* ALSA driver for the Aureal Vortex family of soundprocessors.
* Author: Manuel Jander (mjander@embedded.cl)
*
* This driver is the result of the OpenVortex Project from Savannah
* (savannah.nongnu.org/projects/openvortex). I would like to thank
* the developers of OpenVortex, Jeff Muizelaar and Kester Maddock, from
* whom i got plenty of help, and their codebase was invaluable.
* Thanks to the ALSA developers, they helped a lot working out
* the ALSA part.
* Thanks also to Sourceforge for maintaining the old binary drivers,
* and the forum, where developers could comunicate.
*
* Now at least i can play Legacy DOOM with MIDI music :-)
*/
#include "au88x0.h"
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <sound/initval.h>
// module parameters (see "Module Parameters")
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
static int pcifix[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 255 };
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
module_param_array(pcifix, int, NULL, 0444);
MODULE_PARM_DESC(pcifix, "Enable VIA-workaround for " CARD_NAME " soundcard.");
MODULE_DESCRIPTION("Aureal vortex");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Aureal Semiconductor Inc., Aureal Vortex Sound Processor}}");
MODULE_DEVICE_TABLE(pci, snd_vortex_ids);
static void vortex_fix_latency(struct pci_dev *vortex)
{
int rc;
if (!(rc = pci_write_config_byte(vortex, 0x40, 0xff))) {
printk(KERN_INFO CARD_NAME
": vortex latency is 0xff\n");
} else {
printk(KERN_WARNING CARD_NAME
": could not set vortex latency: pci error 0x%x\n", rc);
}
}
static void vortex_fix_agp_bridge(struct pci_dev *via)
{
int rc;
u8 value;
/*
* only set the bit (Extend PCI#2 Internal Master for
* Efficient Handling of Dummy Requests) if the can
* read the config and it is not already set
*/
if (!(rc = pci_read_config_byte(via, 0x42, &value))
&& ((value & 0x10)
|| !(rc = pci_write_config_byte(via, 0x42, value | 0x10)))) {
printk(KERN_INFO CARD_NAME
": bridge config is 0x%x\n", value | 0x10);
} else {
printk(KERN_WARNING CARD_NAME
": could not set vortex latency: pci error 0x%x\n", rc);
}
}
static void __devinit snd_vortex_workaround(struct pci_dev *vortex, int fix)
{
struct pci_dev *via = NULL;
/* autodetect if workarounds are required */
if (fix == 255) {
/* VIA KT133 */
via = pci_get_device(PCI_VENDOR_ID_VIA,
PCI_DEVICE_ID_VIA_8365_1, NULL);
/* VIA Apollo */
if (via == NULL) {
via = pci_get_device(PCI_VENDOR_ID_VIA,
PCI_DEVICE_ID_VIA_82C598_1, NULL);
/* AMD Irongate */
if (via == NULL)
via = pci_get_device(PCI_VENDOR_ID_AMD,
PCI_DEVICE_ID_AMD_FE_GATE_7007, NULL);
}
if (via) {
printk(KERN_INFO CARD_NAME ": Activating latency workaround...\n");
vortex_fix_latency(vortex);
vortex_fix_agp_bridge(via);
}
} else {
if (fix & 0x1)
vortex_fix_latency(vortex);
if ((fix & 0x2) && (via = pci_get_device(PCI_VENDOR_ID_VIA,
PCI_DEVICE_ID_VIA_8365_1, NULL)))
vortex_fix_agp_bridge(via);
if ((fix & 0x4) && (via = pci_get_device(PCI_VENDOR_ID_VIA,
PCI_DEVICE_ID_VIA_82C598_1, NULL)))
vortex_fix_agp_bridge(via);
if ((fix & 0x8) && (via = pci_get_device(PCI_VENDOR_ID_AMD,
PCI_DEVICE_ID_AMD_FE_GATE_7007, NULL)))
vortex_fix_agp_bridge(via);
}
pci_dev_put(via);
}
// component-destructor
// (see "Management of Cards and Components")
static int snd_vortex_dev_free(struct snd_device *device)
{
vortex_t *vortex = device->device_data;
vortex_gameport_unregister(vortex);
vortex_core_shutdown(vortex);
// Take down PCI interface.
free_irq(vortex->irq, vortex);
iounmap(vortex->mmio);
pci_release_regions(vortex->pci_dev);
pci_disable_device(vortex->pci_dev);
kfree(vortex);
return 0;
}
// chip-specific constructor
// (see "Management of Cards and Components")
static int __devinit
snd_vortex_create(struct snd_card *card, struct pci_dev *pci, vortex_t ** rchip)
{
vortex_t *chip;
int err;
static struct snd_device_ops ops = {
.dev_free = snd_vortex_dev_free,
};
*rchip = NULL;
// check PCI availability (DMA).
if ((err = pci_enable_device(pci)) < 0)
return err;
if (pci_set_dma_mask(pci, DMA_BIT_MASK(32)) < 0 ||
pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32)) < 0) {
printk(KERN_ERR "error to set DMA mask\n");
pci_disable_device(pci);
return -ENXIO;
}
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (chip == NULL) {
pci_disable_device(pci);
return -ENOMEM;
}
chip->card = card;
// initialize the stuff
chip->pci_dev = pci;
chip->io = pci_resource_start(pci, 0);
chip->vendor = pci->vendor;
chip->device = pci->device;
chip->card = card;
chip->irq = -1;
// (1) PCI resource allocation
// Get MMIO area
//
if ((err = pci_request_regions(pci, CARD_NAME_SHORT)) != 0)
goto regions_out;
chip->mmio = pci_ioremap_bar(pci, 0);
if (!chip->mmio) {
printk(KERN_ERR "MMIO area remap failed.\n");
err = -ENOMEM;
goto ioremap_out;
}
/* Init audio core.
* This must be done before we do request_irq otherwise we can get spurious
* interrupts that we do not handle properly and make a mess of things */
if ((err = vortex_core_init(chip)) != 0) {
printk(KERN_ERR "hw core init failed\n");
goto core_out;
}
if ((err = request_irq(pci->irq, vortex_interrupt,
IRQF_SHARED, KBUILD_MODNAME,
chip)) != 0) {
printk(KERN_ERR "cannot grab irq\n");
goto irq_out;
}
chip->irq = pci->irq;
pci_set_master(pci);
// End of PCI setup.
// Register alsa root device.
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
goto alloc_out;
}
snd_card_set_dev(card, &pci->dev);
*rchip = chip;
return 0;
alloc_out:
free_irq(chip->irq, chip);
irq_out:
vortex_core_shutdown(chip);
core_out:
iounmap(chip->mmio);
ioremap_out:
pci_release_regions(chip->pci_dev);
regions_out:
pci_disable_device(chip->pci_dev);
//FIXME: this not the right place to unregister the gameport
vortex_gameport_unregister(chip);
kfree(chip);
return err;
}
// constructor -- see "Constructor" sub-section
static int __devinit
snd_vortex_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
{
static int dev;
struct snd_card *card;
vortex_t *chip;
int err;
// (1)
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev]) {
dev++;
return -ENOENT;
}
// (2)
err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
if (err < 0)
return err;
// (3)
if ((err = snd_vortex_create(card, pci, &chip)) < 0) {
snd_card_free(card);
return err;
}
snd_vortex_workaround(pci, pcifix[dev]);
// Card details needed in snd_vortex_midi
strcpy(card->driver, CARD_NAME_SHORT);
sprintf(card->shortname, "Aureal Vortex %s", CARD_NAME_SHORT);
sprintf(card->longname, "%s at 0x%lx irq %i",
card->shortname, chip->io, chip->irq);
// (4) Alloc components.
err = snd_vortex_mixer(chip);
if (err < 0) {
snd_card_free(card);
return err;
}
// ADB pcm.
err = snd_vortex_new_pcm(chip, VORTEX_PCM_ADB, NR_PCM);
if (err < 0) {
snd_card_free(card);
return err;
}
#ifndef CHIP_AU8820
// ADB SPDIF
if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_SPDIF, 1)) < 0) {
snd_card_free(card);
return err;
}
// A3D
if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_A3D, NR_A3D)) < 0) {
snd_card_free(card);
return err;
}
#endif
/*
// ADB I2S
if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_I2S, 1)) < 0) {
snd_card_free(card);
return err;
}
*/
#ifndef CHIP_AU8810
// WT pcm.
if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_WT, NR_WT)) < 0) {
snd_card_free(card);
return err;
}
#endif
if ((err = snd_vortex_midi(chip)) < 0) {
snd_card_free(card);
return err;
}
vortex_gameport_register(chip);
#if 0
if (snd_seq_device_new(card, 1, SNDRV_SEQ_DEV_ID_VORTEX_SYNTH,
sizeof(snd_vortex_synth_arg_t), &wave) < 0
|| wave == NULL) {
snd_printk(KERN_ERR "Can't initialize Aureal wavetable synth\n");
} else {
snd_vortex_synth_arg_t *arg;
arg = SNDRV_SEQ_DEVICE_ARGPTR(wave);
strcpy(wave->name, "Aureal Synth");
arg->hwptr = vortex;
arg->index = 1;
arg->seq_ports = seq_ports[dev];
arg->max_voices = max_synth_voices[dev];
}
#endif
// (5)
if ((err = pci_read_config_word(pci, PCI_DEVICE_ID,
&(chip->device))) < 0) {
snd_card_free(card);
return err;
}
if ((err = pci_read_config_word(pci, PCI_VENDOR_ID,
&(chip->vendor))) < 0) {
snd_card_free(card);
return err;
}
chip->rev = pci->revision;
#ifdef CHIP_AU8830
if ((chip->rev) != 0xfe && (chip->rev) != 0xfa) {
printk(KERN_ALERT
"vortex: The revision (%x) of your card has not been seen before.\n",
chip->rev);
printk(KERN_ALERT
"vortex: Please email the results of 'lspci -vv' to openvortex-dev@nongnu.org.\n");
snd_card_free(card);
err = -ENODEV;
return err;
}
#endif
// (6)
if ((err = snd_card_register(card)) < 0) {
snd_card_free(card);
return err;
}
// (7)
pci_set_drvdata(pci, card);
dev++;
vortex_connect_default(chip, 1);
vortex_enable_int(chip);
return 0;
}
// destructor -- see "Destructor" sub-section
static void __devexit snd_vortex_remove(struct pci_dev *pci)
{
snd_card_free(pci_get_drvdata(pci));
pci_set_drvdata(pci, NULL);
}
// pci_driver definition
static struct pci_driver driver = {
.name = KBUILD_MODNAME,
.id_table = snd_vortex_ids,
.probe = snd_vortex_probe,
.remove = __devexit_p(snd_vortex_remove),
};
// initialization of the module
static int __init alsa_card_vortex_init(void)
{
return pci_register_driver(&driver);
}
// clean up the module
static void __exit alsa_card_vortex_exit(void)
{
pci_unregister_driver(&driver);
}
module_init(alsa_card_vortex_init)
module_exit(alsa_card_vortex_exit)