linux_dsm_epyc7002/sound/isa/gus/gusmax.c

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/*
* Driver for Gravis UltraSound MAX soundcard
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/init.h>
#include <linux/err.h>
#include <linux/isa.h>
#include <linux/delay.h>
#include <linux/time.h>
#include <linux/module.h>
#include <asm/dma.h>
#include <sound/core.h>
#include <sound/gus.h>
#include <sound/wss.h>
#define SNDRV_LEGACY_FIND_FREE_IRQ
#define SNDRV_LEGACY_FIND_FREE_DMA
#include <sound/initval.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
MODULE_DESCRIPTION("Gravis UltraSound MAX");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Gravis,UltraSound MAX}}");
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x220,0x230,0x240,0x250,0x260 */
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 2,3,5,9,11,12,15 */
static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3,5,6,7 */
static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3,5,6,7 */
static int joystick_dac[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 29};
/* 0 to 31, (0.59V-4.52V or 0.389V-2.98V) */
static int channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 24};
static int pcm_channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for GUS MAX soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for GUS MAX soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable GUS MAX soundcard.");
module_param_array(port, long, NULL, 0444);
MODULE_PARM_DESC(port, "Port # for GUS MAX driver.");
module_param_array(irq, int, NULL, 0444);
MODULE_PARM_DESC(irq, "IRQ # for GUS MAX driver.");
module_param_array(dma1, int, NULL, 0444);
MODULE_PARM_DESC(dma1, "DMA1 # for GUS MAX driver.");
module_param_array(dma2, int, NULL, 0444);
MODULE_PARM_DESC(dma2, "DMA2 # for GUS MAX driver.");
module_param_array(joystick_dac, int, NULL, 0444);
MODULE_PARM_DESC(joystick_dac, "Joystick DAC level 0.59V-4.52V or 0.389V-2.98V for GUS MAX driver.");
module_param_array(channels, int, NULL, 0444);
MODULE_PARM_DESC(channels, "Used GF1 channels for GUS MAX driver.");
module_param_array(pcm_channels, int, NULL, 0444);
MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for GUS MAX driver.");
struct snd_gusmax {
int irq;
struct snd_card *card;
struct snd_gus_card *gus;
struct snd_wss *wss;
unsigned short gus_status_reg;
unsigned short pcm_status_reg;
};
#define PFX "gusmax: "
static int snd_gusmax_detect(struct snd_gus_card *gus)
{
unsigned char d;
snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0); /* reset GF1 */
if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 0) {
snd_printdd("[0x%lx] check 1 failed - 0x%x\n", gus->gf1.port, d);
return -ENODEV;
}
udelay(160);
snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* release reset */
udelay(160);
if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 1) {
snd_printdd("[0x%lx] check 2 failed - 0x%x\n", gus->gf1.port, d);
return -ENODEV;
}
return 0;
}
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 20:55:46 +07:00
static irqreturn_t snd_gusmax_interrupt(int irq, void *dev_id)
{
struct snd_gusmax *maxcard = dev_id;
int loop, max = 5;
int handled = 0;
do {
loop = 0;
if (inb(maxcard->gus_status_reg)) {
handled = 1;
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 20:55:46 +07:00
snd_gus_interrupt(irq, maxcard->gus);
loop++;
}
if (inb(maxcard->pcm_status_reg) & 0x01) { /* IRQ bit is set? */
handled = 1;
snd_wss_interrupt(irq, maxcard->wss);
loop++;
}
} while (loop && --max > 0);
return IRQ_RETVAL(handled);
}
static void snd_gusmax_init(int dev, struct snd_card *card,
struct snd_gus_card *gus)
{
gus->equal_irq = 1;
gus->codec_flag = 1;
gus->joystick_dac = joystick_dac[dev];
/* init control register */
gus->max_cntrl_val = (gus->gf1.port >> 4) & 0x0f;
if (gus->gf1.dma1 > 3)
gus->max_cntrl_val |= 0x10;
if (gus->gf1.dma2 > 3)
gus->max_cntrl_val |= 0x20;
gus->max_cntrl_val |= 0x40;
outb(gus->max_cntrl_val, GUSP(gus, MAXCNTRLPORT));
}
static int snd_gusmax_mixer(struct snd_wss *chip)
{
struct snd_card *card = chip->card;
struct snd_ctl_elem_id id1, id2;
int err;
memset(&id1, 0, sizeof(id1));
memset(&id2, 0, sizeof(id2));
id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
/* reassign AUXA to SYNTHESIZER */
strcpy(id1.name, "Aux Playback Switch");
strcpy(id2.name, "Synth Playback Switch");
if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
return err;
strcpy(id1.name, "Aux Playback Volume");
strcpy(id2.name, "Synth Playback Volume");
if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
return err;
/* reassign AUXB to CD */
strcpy(id1.name, "Aux Playback Switch"); id1.index = 1;
strcpy(id2.name, "CD Playback Switch");
if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
return err;
strcpy(id1.name, "Aux Playback Volume");
strcpy(id2.name, "CD Playback Volume");
if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
return err;
#if 0
/* reassign Mono Input to MIC */
if (snd_mixer_group_rename(mixer,
SNDRV_MIXER_IN_MONO, 0,
SNDRV_MIXER_IN_MIC, 0) < 0)
goto __error;
if (snd_mixer_elem_rename(mixer,
SNDRV_MIXER_IN_MONO, 0, SNDRV_MIXER_ETYPE_INPUT,
SNDRV_MIXER_IN_MIC, 0) < 0)
goto __error;
if (snd_mixer_elem_rename(mixer,
"Mono Capture Volume", 0, SNDRV_MIXER_ETYPE_VOLUME1,
"Mic Capture Volume", 0) < 0)
goto __error;
if (snd_mixer_elem_rename(mixer,
"Mono Capture Switch", 0, SNDRV_MIXER_ETYPE_SWITCH1,
"Mic Capture Switch", 0) < 0)
goto __error;
#endif
return 0;
}
static void snd_gusmax_free(struct snd_card *card)
{
struct snd_gusmax *maxcard = card->private_data;
if (maxcard == NULL)
return;
if (maxcard->irq >= 0)
free_irq(maxcard->irq, (void *)maxcard);
}
static int snd_gusmax_match(struct device *pdev, unsigned int dev)
{
return enable[dev];
}
static int snd_gusmax_probe(struct device *pdev, unsigned int dev)
{
static int possible_irqs[] = {5, 11, 12, 9, 7, 15, 3, -1};
static int possible_dmas[] = {5, 6, 7, 1, 3, -1};
int xirq, xdma1, xdma2, err;
struct snd_card *card;
struct snd_gus_card *gus = NULL;
struct snd_wss *wss;
struct snd_gusmax *maxcard;
err = snd_card_new(pdev, index[dev], id[dev], THIS_MODULE,
sizeof(struct snd_gusmax), &card);
if (err < 0)
return err;
card->private_free = snd_gusmax_free;
maxcard = card->private_data;
maxcard->card = card;
maxcard->irq = -1;
xirq = irq[dev];
if (xirq == SNDRV_AUTO_IRQ) {
if ((xirq = snd_legacy_find_free_irq(possible_irqs)) < 0) {
snd_printk(KERN_ERR PFX "unable to find a free IRQ\n");
err = -EBUSY;
goto _err;
}
}
xdma1 = dma1[dev];
if (xdma1 == SNDRV_AUTO_DMA) {
if ((xdma1 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
snd_printk(KERN_ERR PFX "unable to find a free DMA1\n");
err = -EBUSY;
goto _err;
}
}
xdma2 = dma2[dev];
if (xdma2 == SNDRV_AUTO_DMA) {
if ((xdma2 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
snd_printk(KERN_ERR PFX "unable to find a free DMA2\n");
err = -EBUSY;
goto _err;
}
}
if (port[dev] != SNDRV_AUTO_PORT) {
err = snd_gus_create(card,
port[dev],
-xirq, xdma1, xdma2,
0, channels[dev],
pcm_channels[dev],
0, &gus);
} else {
static unsigned long possible_ports[] = {
0x220, 0x230, 0x240, 0x250, 0x260
};
int i;
for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
err = snd_gus_create(card,
possible_ports[i],
-xirq, xdma1, xdma2,
0, channels[dev],
pcm_channels[dev],
0, &gus);
if (err >= 0) {
port[dev] = possible_ports[i];
break;
}
}
}
if (err < 0)
goto _err;
if ((err = snd_gusmax_detect(gus)) < 0)
goto _err;
maxcard->gus_status_reg = gus->gf1.reg_irqstat;
maxcard->pcm_status_reg = gus->gf1.port + 0x10c + 2;
snd_gusmax_init(dev, card, gus);
if ((err = snd_gus_initialize(gus)) < 0)
goto _err;
if (!gus->max_flag) {
snd_printk(KERN_ERR PFX "GUS MAX soundcard was not detected at 0x%lx\n", gus->gf1.port);
err = -ENODEV;
goto _err;
}
if (request_irq(xirq, snd_gusmax_interrupt, 0, "GUS MAX", (void *)maxcard)) {
snd_printk(KERN_ERR PFX "unable to grab IRQ %d\n", xirq);
err = -EBUSY;
goto _err;
}
maxcard->irq = xirq;
err = snd_wss_create(card,
gus->gf1.port + 0x10c, -1, xirq,
xdma2 < 0 ? xdma1 : xdma2, xdma1,
WSS_HW_DETECT,
WSS_HWSHARE_IRQ |
WSS_HWSHARE_DMA1 |
WSS_HWSHARE_DMA2,
&wss);
if (err < 0)
goto _err;
err = snd_wss_pcm(wss, 0);
if (err < 0)
goto _err;
err = snd_wss_mixer(wss);
if (err < 0)
goto _err;
err = snd_wss_timer(wss, 2);
if (err < 0)
goto _err;
if (pcm_channels[dev] > 0) {
if ((err = snd_gf1_pcm_new(gus, 1, 1)) < 0)
goto _err;
}
err = snd_gusmax_mixer(wss);
if (err < 0)
goto _err;
err = snd_gf1_rawmidi_new(gus, 0);
if (err < 0)
goto _err;
sprintf(card->longname + strlen(card->longname), " at 0x%lx, irq %i, dma %i", gus->gf1.port, xirq, xdma1);
if (xdma2 >= 0)
sprintf(card->longname + strlen(card->longname), "&%i", xdma2);
err = snd_card_register(card);
if (err < 0)
goto _err;
maxcard->gus = gus;
maxcard->wss = wss;
dev_set_drvdata(pdev, card);
return 0;
_err:
snd_card_free(card);
return err;
}
static int snd_gusmax_remove(struct device *devptr, unsigned int dev)
{
snd_card_free(dev_get_drvdata(devptr));
return 0;
}
#define DEV_NAME "gusmax"
static struct isa_driver snd_gusmax_driver = {
.match = snd_gusmax_match,
.probe = snd_gusmax_probe,
.remove = snd_gusmax_remove,
/* FIXME: suspend/resume */
.driver = {
.name = DEV_NAME
},
};
static int __init alsa_card_gusmax_init(void)
{
return isa_register_driver(&snd_gusmax_driver, SNDRV_CARDS);
}
static void __exit alsa_card_gusmax_exit(void)
{
isa_unregister_driver(&snd_gusmax_driver);
}
module_init(alsa_card_gusmax_init)
module_exit(alsa_card_gusmax_exit)