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linux-next/sound/pci/au88x0/au88x0.c
Auke Kok 44c10138fd PCI: Change all drivers to use pci_device->revision 
Instead of all drivers reading pci config space to get the revision
ID, they can now use the pci_device->revision member.

This exposes some issues where drivers where reading a word or a dword
for the revision number, and adding useless error-handling around the
read. Some drivers even just read it for no purpose of all.

In devices where the revision ID is being copied over and used in what
appears to be the equivalent of hotpath, I have left the copy code
and the cached copy as not to influence the driver's performance.

Compile tested with make all{yes,mod}config on x86_64 and i386.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Acked-by: Dave Jones <davej@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-11 16:02:10 -07:00

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/*
* 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/moduleparam.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 int 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.
synchronize_irq(vortex->irq);
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_32BIT_MASK) < 0 ||
pci_set_consistent_dma_mask(pci, DMA_32BIT_MASK) < 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 = ioremap_nocache(pci_resource_start(pci, 0),
pci_resource_len(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
* interupts 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, CARD_NAME_SHORT,
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:
synchronize_irq(chip->irq);
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);
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)
card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
if (card == NULL)
return -ENOMEM;
// (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.
// ADB pcm.
if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_ADB, NR_ADB)) < 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
// snd_ac97_mixer and Vortex mixer.
if ((err = snd_vortex_mixer(chip)) < 0) {
snd_card_free(card);
return err;
}
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 = CARD_NAME_SHORT,
.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)
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