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Commit e63cd488 authored by Adam Belay's avatar Adam Belay Committed by Linus Torvalds
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[PATCH] Fix awe PnP probing 

This is a rewrite of the awe_wave detection code that will allow this
driver to be compiled.  It moves detection functions to a common
location at the end of the file and makes the code driver-model
compatible.  Also it fixes a bug in which the driver could possibly
write to incorrect ports when using isapnp cards.

Unfortunantly I do not currently have an AWE32 to test these changes so
I could only check for compilation and driver registration.
parent 2e2aa4ce
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Showing with 289 additions and 304 deletions
sound/oss/awe_wave.c
View file @ e63cd488
......@@ -21,12 +21,18 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* Changelog:
* Aug 18, 2003, Adam Belay <ambx1@neo.rr.com>
* - detection code rewrite
*/
#include <linux/awe_voice.h>
#include <linux/config.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/isapnp.h>
#include <linux/pnp.h>
#include "sound_config.h"
......@@ -203,7 +209,7 @@ static awe_chan_info channels[AWE_MAX_CHANNELS];
int io = AWE_DEFAULT_BASE_ADDR; /* Emu8000 base address */
int memsize = AWE_DEFAULT_MEM_SIZE; /* memory size in Kbytes */
#ifdef __ISAPNP__
#ifdef CONFIG_PNP
static int isapnp = -1;
#else
static int isapnp;
......@@ -234,7 +240,7 @@ static short atten_offset;
static int awe_present = FALSE; /* awe device present? */
static int awe_busy = FALSE; /* awe device opened? */
static int my_dev = -1;
static int my_dev = -1;
#define DEFAULT_DRUM_FLAGS ((1 << 9) | (1 << 25))
#define IS_DRUM_CHANNEL(c) (drum_flags & (1 << (c)))
......@@ -280,8 +286,6 @@ static unsigned int awe_peek_dw(unsigned short cmd, unsigned short port);
static void awe_wait(unsigned short delay);
/* initialize emu8000 chip */
static int _attach_awe(void);
static void _unload_awe(void);
static void awe_initialize(void);
/* set voice parameters */
......@@ -517,64 +521,6 @@ static struct synth_operations awe_operations =
.setup_voice = awe_setup_voice
};
/*
* General attach / unload interface
*/
static int __init _attach_awe(void)
{
if (awe_present) return 0; /* for OSS38.. called twice? */
/* check presence of AWE32 card */
if (! awe_detect()) {
printk(KERN_ERR "AWE32: not detected\n");
return 0;
}
/* reserve I/O ports for awedrv */
if (! awe_request_region()) {
printk(KERN_ERR "AWE32: I/O area already used.\n");
return 0;
}
/* set buffers to NULL */
sfhead = sftail = NULL;
my_dev = sound_alloc_synthdev();
if (my_dev == -1) {
printk(KERN_ERR "AWE32 Error: too many synthesizers\n");
awe_release_region();
return 0;
}
voice_alloc = &awe_operations.alloc;
voice_alloc->max_voice = awe_max_voices;
synth_devs[my_dev] = &awe_operations;
#ifdef CONFIG_AWE32_MIXER
attach_mixer();
#endif
#ifdef CONFIG_AWE32_MIDIEMU
attach_midiemu();
#endif
/* clear all samples */
awe_reset_samples();
/* initialize AWE32 hardware */
awe_initialize();
sprintf(awe_info.name, "AWE32-%s (RAM%dk)",
AWEDRV_VERSION, memsize/1024);
printk(KERN_INFO "<SoundBlaster EMU8000 (RAM%dk)>\n", memsize/1024);
awe_present = TRUE;
return 1;
}
static void free_tables(void)
{
if (sftail) {
......@@ -587,25 +533,6 @@ static void free_tables(void)
sfhead = sftail = NULL;
}
static void __exit _unload_awe(void)
{
if (awe_present) {
awe_reset_samples();
awe_release_region();
free_tables();
#ifdef CONFIG_AWE32_MIXER
unload_mixer();
#endif
#ifdef CONFIG_AWE32_MIDIEMU
unload_midiemu();
#endif
sound_unload_synthdev(my_dev);
awe_present = FALSE;
}
}
/*
* clear sample tables
*/
......@@ -634,22 +561,6 @@ static int awe_cur_cmd = -1;
#define awe_set_cmd(cmd) \
if (awe_cur_cmd != cmd) { outw(cmd, awe_ports[Pointer]); awe_cur_cmd = cmd; }
/* store values to i/o port array */
static void setup_ports(int port1, int port2, int port3)
{
awe_ports[0] = port1;
if (port2 == 0)
port2 = port1 + 0x400;
awe_ports[1] = port2;
awe_ports[2] = port2 + 2;
if (port3 == 0)
port3 = port1 + 0x800;
awe_ports[3] = port3;
awe_ports[4] = port3 + 2;
port_setuped = TRUE;
}
/* write 16bit data */
static void
awe_poke(unsigned short cmd, unsigned short port, unsigned short data)
......@@ -732,90 +643,6 @@ static void awe_wait(unsigned short delay)
/* write a word data */
#define awe_write_dram(c) awe_poke(AWE_SMLD, c)
/*
* port request
* 0x620-623, 0xA20-A23, 0xE20-E23
*/
static int __init
awe_request_region(void)
{
if (! port_setuped)
return 0;
if (! request_region(awe_ports[0], 4, "sound driver (AWE32)"))
return 0;
if (! request_region(awe_ports[1], 4, "sound driver (AWE32)"))
goto err_out;
if (! request_region(awe_ports[3], 4, "sound driver (AWE32)"))
goto err_out1;
return 1;
err_out1:
release_region(awe_ports[1], 4);
err_out:
release_region(awe_ports[0], 4);
return 0;
}
static void
awe_release_region(void)
{
if (! port_setuped) return;
release_region(awe_ports[0], 4);
release_region(awe_ports[1], 4);
release_region(awe_ports[3], 4);
}
/*
* initialization of AWE driver
*/
static void
awe_initialize(void)
{
DEBUG(0,printk("AWE32: initializing..\n"));
/* initialize hardware configuration */
awe_poke(AWE_HWCF1, 0x0059);
awe_poke(AWE_HWCF2, 0x0020);
/* disable audio; this seems to reduce a clicking noise a bit.. */
awe_poke(AWE_HWCF3, 0);
/* initialize audio channels */
awe_init_audio();
/* initialize DMA */
awe_init_dma();
/* initialize init array */
awe_init_array();
/* check DRAM memory size */
awe_check_dram();
/* initialize the FM section of the AWE32 */
awe_init_fm();
/* set up voice envelopes */
awe_tweak();
/* enable audio */
awe_poke(AWE_HWCF3, 0x0004);
/* set default values */
awe_init_ctrl_parms(TRUE);
/* set equalizer */
awe_update_equalizer();
/* set reverb & chorus modes */
awe_update_reverb_mode();
awe_update_chorus_mode();
}
/*
* AWE32 voice parameters
*/
......@@ -4753,122 +4580,6 @@ awe_close_dram(void)
}
/*
* detect presence of AWE32 and check memory size
*/
/* detect emu8000 chip on the specified address; from VV's guide */
static int __init
awe_detect_base(int addr)
{
setup_ports(addr, 0, 0);
if ((awe_peek(AWE_U1) & 0x000F) != 0x000C)
return 0;
if ((awe_peek(AWE_HWCF1) & 0x007E) != 0x0058)
return 0;
if ((awe_peek(AWE_HWCF2) & 0x0003) != 0x0003)
return 0;
DEBUG(0,printk("AWE32 found at %x\n", addr));
return 1;
}
#ifdef __ISAPNP__
static struct {
unsigned short card_vendor, card_device;
unsigned short vendor;
unsigned short function;
char *name;
} isapnp_awe_list[] __initdata = {
{ ISAPNP_ANY_ID, ISAPNP_ANY_ID,
ISAPNP_VENDOR('C','T','L'), ISAPNP_FUNCTION(0x0021),
"AWE32 WaveTable" },
{ ISAPNP_ANY_ID, ISAPNP_ANY_ID,
ISAPNP_VENDOR('C','T','L'), ISAPNP_FUNCTION(0x0022),
"AWE64 WaveTable" },
{ ISAPNP_ANY_ID, ISAPNP_ANY_ID,
ISAPNP_VENDOR('C','T','L'), ISAPNP_FUNCTION(0x0023),
"AWE64 Gold WaveTable" },
{0}
};
MODULE_DEVICE_TABLE(isapnp, isapnp_awe_list);
static struct pci_dev *idev = NULL;
static int __init awe_probe_isapnp(int *port)
{
int i;
for (i = 0; isapnp_awe_list[i].vendor != 0; i++) {
while ((idev = isapnp_find_dev(NULL,
isapnp_awe_list[i].vendor,
isapnp_awe_list[i].function,
idev))) {
if (idev->prepare(idev) < 0)
continue;
if (idev->activate(idev) < 0 ||
!idev->resource[0].start) {
idev->deactivate(idev);
idev->deactivate(idev);
continue;
}
*port = idev->resource[0].start;
break;
}
if (!idev)
continue;
printk(KERN_INFO "ISAPnP reports %s at i/o %#x\n",
isapnp_awe_list[i].name, *port);
return 0;
}
return -ENODEV;
}
static void __exit awe_deactivate_isapnp(void)
{
#if 1
if (idev) {
idev->deactivate(idev);
idev = NULL;
}
#endif
}
#endif
static int __init
awe_detect(void)
{
int base;
#ifdef __ISAPNP__
if (isapnp) {
if (awe_probe_isapnp(&io) < 0) {
printk(KERN_ERR "AWE32: No ISAPnP cards found\n");
if (isapnp != -1)
return 0;
} else {
setup_ports(io, 0, 0);
return 1;
}
}
#endif /* isapnp */
if (io) /* use default i/o port value */
setup_ports(io, 0, 0);
else { /* probe it */
for (base = 0x620; base <= 0x680; base += 0x20)
if (awe_detect_base(base))
return 1;
DEBUG(0,printk("AWE32 not found\n"));
return 0;
}
return 1;
}
/*
* check dram size on AWE board
*/
......@@ -6121,22 +5832,296 @@ static int xg_control_change(MidiStatus *st, int cmd, int val)
/*----------------------------------------------------------------*/
/*
* initialization of AWE driver
*/
static void
awe_initialize(void)
{
DEBUG(0,printk("AWE32: initializing..\n"));
/* initialize hardware configuration */
awe_poke(AWE_HWCF1, 0x0059);
awe_poke(AWE_HWCF2, 0x0020);
/* disable audio; this seems to reduce a clicking noise a bit.. */
awe_poke(AWE_HWCF3, 0);
/* initialize audio channels */
awe_init_audio();
/* initialize DMA */
awe_init_dma();
/* initialize init array */
awe_init_array();
/* check DRAM memory size */
awe_check_dram();
/* initialize the FM section of the AWE32 */
awe_init_fm();
/* set up voice envelopes */
awe_tweak();
/* enable audio */
awe_poke(AWE_HWCF3, 0x0004);
/* set default values */
awe_init_ctrl_parms(TRUE);
/* set equalizer */
awe_update_equalizer();
/* set reverb & chorus modes */
awe_update_reverb_mode();
awe_update_chorus_mode();
}
/*
* Core Device Management Functions
*/
/* store values to i/o port array */
static void setup_ports(int port1, int port2, int port3)
{
awe_ports[0] = port1;
if (port2 == 0)
port2 = port1 + 0x400;
awe_ports[1] = port2;
awe_ports[2] = port2 + 2;
if (port3 == 0)
port3 = port1 + 0x800;
awe_ports[3] = port3;
awe_ports[4] = port3 + 2;
port_setuped = TRUE;
}
/*
* port request
* 0x620-623, 0xA20-A23, 0xE20-E23
*/
static int
awe_request_region(void)
{
if (! port_setuped)
return 0;
if (! request_region(awe_ports[0], 4, "sound driver (AWE32)"))
return 0;
if (! request_region(awe_ports[1], 4, "sound driver (AWE32)"))
goto err_out;
if (! request_region(awe_ports[3], 4, "sound driver (AWE32)"))
goto err_out1;
return 1;
err_out1:
release_region(awe_ports[1], 4);
err_out:
release_region(awe_ports[0], 4);
return 0;
}
static void
awe_release_region(void)
{
if (! port_setuped) return;
release_region(awe_ports[0], 4);
release_region(awe_ports[1], 4);
release_region(awe_ports[3], 4);
}
static int awe_attach_device(void)
{
if (awe_present) return 0; /* for OSS38.. called twice? */
/* reserve I/O ports for awedrv */
if (! awe_request_region()) {
printk(KERN_ERR "AWE32: I/O area already used.\n");
return 0;
}
/* set buffers to NULL */
sfhead = sftail = NULL;
my_dev = sound_alloc_synthdev();
if (my_dev == -1) {
printk(KERN_ERR "AWE32 Error: too many synthesizers\n");
awe_release_region();
return 0;
}
voice_alloc = &awe_operations.alloc;
voice_alloc->max_voice = awe_max_voices;
synth_devs[my_dev] = &awe_operations;
#ifdef CONFIG_AWE32_MIXER
attach_mixer();
#endif
#ifdef CONFIG_AWE32_MIDIEMU
attach_midiemu();
#endif
/* clear all samples */
awe_reset_samples();
/* initialize AWE32 hardware */
awe_initialize();
sprintf(awe_info.name, "AWE32-%s (RAM%dk)",
AWEDRV_VERSION, memsize/1024);
printk(KERN_INFO "<SoundBlaster EMU8000 (RAM%dk)>\n", memsize/1024);
awe_present = TRUE;
return 1;
}
static void awe_dettach_device(void)
{
if (awe_present) {
awe_reset_samples();
awe_release_region();
free_tables();
#ifdef CONFIG_AWE32_MIXER
unload_mixer();
#endif
#ifdef CONFIG_AWE32_MIDIEMU
unload_midiemu();
#endif
sound_unload_synthdev(my_dev);
awe_present = FALSE;
}
}
/*
* Legacy device Probing
*/
/* detect emu8000 chip on the specified address; from VV's guide */
static int __init
awe_detect_base(int addr)
{
setup_ports(addr, 0, 0);
if ((awe_peek(AWE_U1) & 0x000F) != 0x000C)
return 0;
if ((awe_peek(AWE_HWCF1) & 0x007E) != 0x0058)
return 0;
if ((awe_peek(AWE_HWCF2) & 0x0003) != 0x0003)
return 0;
DEBUG(0,printk("AWE32 found at %x\n", addr));
return 1;
}
static int __init awe_detect_legacy_devices(void)
{
int base;
for (base = 0x620; base <= 0x680; base += 0x20)
if (awe_detect_base(base)) {
awe_attach_device();
return 1;
}
DEBUG(0,printk("AWE32 Legacy detection failed\n"));
return 0;
}
/*
* PnP device Probing
*/
static struct pnp_device_id awe_pnp_ids[] = {
{.id = "CTL0021", .driver_data = 0}, /* AWE32 WaveTable */
{.id = "CTL0022", .driver_data = 0}, /* AWE64 WaveTable */
{.id = "CTL0023", .driver_data = 0}, /* AWE64 Gold WaveTable */
{ } /* terminator */
};
MODULE_DEVICE_TABLE(pnp, awe_pnp_ids);
static int awe_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
{
int io1, io2, io3;
if (awe_present) {
printk(KERN_ERR "AWE32: This driver only supports one AWE32 device, skipping.\n");
}
if (!pnp_port_valid(dev,0) ||
!pnp_port_valid(dev,1) ||
!pnp_port_valid(dev,2)) {
printk(KERN_ERR "AWE32: The PnP device does not have the required resources.\n");
return -EINVAL;
}
io1 = pnp_port_start(dev,0);
io2 = pnp_port_start(dev,1);
io3 = pnp_port_start(dev,2);
printk(KERN_INFO "AWE32: A PnP Wave Table was detected at IO's %#x,%#x,%#x\n.",
io1, io2, io3);
setup_ports(io1, io2, io3);
awe_attach_device();
return 0;
}
static void awe_pnp_remove(struct pnp_dev *dev)
{
awe_dettach_device();
}
static struct pnp_driver awe_pnp_driver = {
.name = "AWE32",
.id_table = awe_pnp_ids,
.probe = awe_pnp_probe,
.remove = awe_pnp_remove,
};
static int __init awe_detect_pnp_devices(void)
{
int ret;
ret = pnp_register_driver(&awe_pnp_driver);
if (ret<0)
printk(KERN_ERR "AWE32: PnP support is unavailable.\n");
return ret;
}
/*
* device / lowlevel (module) interface
*/
static int __init
awe_detect(void)
{
printk(KERN_INFO "AWE32: Probing for WaveTable...\n");
if (isapnp) {
if (awe_detect_pnp_devices()>=0)
return 1;
} else
printk(KERN_INFO "AWE32: Skipping PnP detection.\n");
if (awe_detect_legacy_devices())
return 1;
return 0;
}
int __init attach_awe(void)
{
return _attach_awe() ? 0 : -ENODEV;
return awe_detect() ? 0 : -ENODEV;
}
void __exit unload_awe(void)
{
_unload_awe();
#ifdef __ISAPNP__
if (isapnp)
awe_deactivate_isapnp();
#endif /* isapnp */
pnp_unregister_driver(&awe_pnp_driver);
awe_dettach_device();
}
......
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