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freebsd-skq/sys/dev/sound/isa/gusc.c
Marius Strobl 4b7ec27007 - There's no need to overwrite the default device method with the default 
one. Interestingly, these are actually the default for quite some time
  (bus_generic_driver_added(9) since r52045 and bus_generic_print_child(9)
  since r52045) but even recently added device drivers do this unnecessarily.
  Discussed with: jhb, marcel
- While at it, use DEVMETHOD_END.
  Discussed with: jhb
- Also while at it, use __FBSDID.
2011-11-22 21:28:20 +00:00

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/*-
* Copyright (c) 1999 Seigo Tanimura
* Copyright (c) 1999 Ville-Pertti Keinonen
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <machine/resource.h>
#include <machine/bus.h>
#include <sys/rman.h>
#ifdef HAVE_KERNEL_OPTION_HEADERS
#include "opt_snd.h"
#endif
#include <dev/sound/pcm/sound.h>
#include <dev/sound/chip.h>
#include "bus_if.h"
#include <isa/isavar.h>
#include <isa/isa_common.h>
SND_DECLARE_FILE("$FreeBSD$");
#define LOGICALID_NOPNP 0
#define LOGICALID_PCM 0x0000561e
#define LOGICALID_OPL 0x0300561e
#define LOGICALID_MIDI 0x0400561e
/* PnP IDs */
static struct isa_pnp_id gusc_ids[] = {
{LOGICALID_PCM, "GRV0000 Gravis UltraSound PnP PCM"}, /* GRV0000 */
{LOGICALID_OPL, "GRV0003 Gravis UltraSound PnP OPL"}, /* GRV0003 */
{LOGICALID_MIDI, "GRV0004 Gravis UltraSound PnP MIDI"}, /* GRV0004 */
};
/* Interrupt handler. */
struct gusc_ihandler {
void (*intr)(void *);
void *arg;
};
/* Here is the parameter structure per a device. */
struct gusc_softc {
device_t dev; /* device */
int io_rid[3]; /* io port rids */
struct resource *io[3]; /* io port resources */
int io_alloced[3]; /* io port alloc flag */
int irq_rid; /* irq rids */
struct resource *irq; /* irq resources */
int irq_alloced; /* irq alloc flag */
int drq_rid[2]; /* drq rids */
struct resource *drq[2]; /* drq resources */
int drq_alloced[2]; /* drq alloc flag */
/* Interrupts are shared (XXX non-PnP only?) */
struct gusc_ihandler midi_intr;
struct gusc_ihandler pcm_intr;
};
typedef struct gusc_softc *sc_p;
static int gusc_probe(device_t dev);
static int gusc_attach(device_t dev);
static int gusisa_probe(device_t dev);
static void gusc_intr(void *);
static struct resource *gusc_alloc_resource(device_t bus, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags);
static int gusc_release_resource(device_t bus, device_t child, int type, int rid,
struct resource *r);
static device_t find_masterdev(sc_p scp);
static int alloc_resource(sc_p scp);
static int release_resource(sc_p scp);
static devclass_t gusc_devclass;
static int
gusc_probe(device_t dev)
{
device_t child;
u_int32_t logical_id;
char *s;
struct sndcard_func *func;
int ret;
logical_id = isa_get_logicalid(dev);
s = NULL;
/* Check isapnp ids */
if (logical_id != 0 && (ret = ISA_PNP_PROBE(device_get_parent(dev), dev, gusc_ids)) != 0)
return (ret);
else {
if (logical_id == 0)
return gusisa_probe(dev);
}
switch (logical_id) {
case LOGICALID_PCM:
s = "Gravis UltraSound Plug & Play PCM";
func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
if (func == NULL)
return (ENOMEM);
func->func = SCF_PCM;
child = device_add_child(dev, "pcm", -1);
device_set_ivars(child, func);
break;
case LOGICALID_OPL:
s = "Gravis UltraSound Plug & Play OPL";
func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
if (func == NULL)
return (ENOMEM);
func->func = SCF_SYNTH;
child = device_add_child(dev, "midi", -1);
device_set_ivars(child, func);
break;
case LOGICALID_MIDI:
s = "Gravis UltraSound Plug & Play MIDI";
func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
if (func == NULL)
return (ENOMEM);
func->func = SCF_MIDI;
child = device_add_child(dev, "midi", -1);
device_set_ivars(child, func);
break;
}
if (s != NULL) {
device_set_desc(dev, s);
return (0);
}
return (ENXIO);
}
static void
port_wr(struct resource *r, int i, unsigned char v)
{
bus_space_write_1(rman_get_bustag(r), rman_get_bushandle(r), i, v);
}
static int
port_rd(struct resource *r, int i)
{
return bus_space_read_1(rman_get_bustag(r), rman_get_bushandle(r), i);
}
/*
* Probe for an old (non-PnP) GUS card on the ISA bus.
*/
static int
gusisa_probe(device_t dev)
{
device_t child;
struct resource *res, *res2;
int base, rid, rid2, s, flags;
unsigned char val;
base = isa_get_port(dev);
flags = device_get_flags(dev);
rid = 1;
res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, base + 0x100,
base + 0x107, 8, RF_ACTIVE);
if (res == NULL)
return ENXIO;
res2 = NULL;
/*
* Check for the presence of some GUS card. Reset the card,
* then see if we can access the memory on it.
*/
port_wr(res, 3, 0x4c);
port_wr(res, 5, 0);
DELAY(30 * 1000);
port_wr(res, 3, 0x4c);
port_wr(res, 5, 1);
DELAY(30 * 1000);
s = splhigh();
/* Write to DRAM. */
port_wr(res, 3, 0x43); /* Register select */
port_wr(res, 4, 0); /* Low addr */
port_wr(res, 5, 0); /* Med addr */
port_wr(res, 3, 0x44); /* Register select */
port_wr(res, 4, 0); /* High addr */
port_wr(res, 7, 0x55); /* DRAM */
/* Read from DRAM. */
port_wr(res, 3, 0x43); /* Register select */
port_wr(res, 4, 0); /* Low addr */
port_wr(res, 5, 0); /* Med addr */
port_wr(res, 3, 0x44); /* Register select */
port_wr(res, 4, 0); /* High addr */
val = port_rd(res, 7); /* DRAM */
splx(s);
if (val != 0x55)
goto fail;
rid2 = 0;
res2 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid2, base, base, 1,
RF_ACTIVE);
if (res2 == NULL)
goto fail;
s = splhigh();
port_wr(res2, 0x0f, 0x20);
val = port_rd(res2, 0x0f);
splx(s);
if (val == 0xff || (val & 0x06) == 0)
val = 0;
else {
val = port_rd(res2, 0x506); /* XXX Out of range. */
if (val == 0xff)
val = 0;
}
bus_release_resource(dev, SYS_RES_IOPORT, rid2, res2);
bus_release_resource(dev, SYS_RES_IOPORT, rid, res);
if (val >= 10) {
struct sndcard_func *func;
/* Looks like a GUS MAX. Set the rest of the resources. */
bus_set_resource(dev, SYS_RES_IOPORT, 2, base + 0x10c, 8);
if (flags & DV_F_DUAL_DMA)
bus_set_resource(dev, SYS_RES_DRQ, 1,
flags & DV_F_DRQ_MASK, 1);
/* We can support the CS4231 and MIDI devices. */
func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
if (func == NULL)
return ENOMEM;
func->func = SCF_MIDI;
child = device_add_child(dev, "midi", -1);
device_set_ivars(child, func);
func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
if (func == NULL)
printf("xxx: gus pcm not attached, out of memory\n");
else {
func->func = SCF_PCM;
child = device_add_child(dev, "pcm", -1);
device_set_ivars(child, func);
}
device_set_desc(dev, "Gravis UltraSound MAX");
return 0;
} else {
/*
* TODO: Support even older GUS cards. MIDI should work on
* all models.
*/
return ENXIO;
}
fail:
bus_release_resource(dev, SYS_RES_IOPORT, rid, res);
return ENXIO;
}
static int
gusc_attach(device_t dev)
{
sc_p scp;
void *ih;
scp = device_get_softc(dev);
bzero(scp, sizeof(*scp));
scp->dev = dev;
if (alloc_resource(scp)) {
release_resource(scp);
return (ENXIO);
}
if (scp->irq != NULL)
snd_setup_intr(dev, scp->irq, 0, gusc_intr, scp, &ih);
bus_generic_attach(dev);
return (0);
}
/*
* Handle interrupts on GUS devices until there aren't any left.
*/
static void
gusc_intr(void *arg)
{
sc_p scp = (sc_p)arg;
int did_something;
do {
did_something = 0;
if (scp->pcm_intr.intr != NULL &&
(port_rd(scp->io[2], 2) & 1)) {
(*scp->pcm_intr.intr)(scp->pcm_intr.arg);
did_something = 1;
}
if (scp->midi_intr.intr != NULL &&
(port_rd(scp->io[1], 0) & 0x80)) {
(*scp->midi_intr.intr)(scp->midi_intr.arg);
did_something = 1;
}
} while (did_something != 0);
}
static struct resource *
gusc_alloc_resource(device_t bus, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
sc_p scp;
int *alloced, rid_max, alloced_max;
struct resource **res;
scp = device_get_softc(bus);
switch (type) {
case SYS_RES_IOPORT:
alloced = scp->io_alloced;
res = scp->io;
rid_max = 2;
alloced_max = 2; /* pcm + midi (more to include synth) */
break;
case SYS_RES_IRQ:
alloced = &scp->irq_alloced;
res = &scp->irq;
rid_max = 0;
alloced_max = 2; /* pcm and midi share the single irq. */
break;
case SYS_RES_DRQ:
alloced = scp->drq_alloced;
res = scp->drq;
rid_max = 1;
alloced_max = 1;
break;
default:
return (NULL);
}
if (*rid > rid_max || alloced[*rid] == alloced_max)
return (NULL);
alloced[*rid]++;
return (res[*rid]);
}
static int
gusc_release_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
sc_p scp;
int *alloced, rid_max;
scp = device_get_softc(bus);
switch (type) {
case SYS_RES_IOPORT:
alloced = scp->io_alloced;
rid_max = 2;
break;
case SYS_RES_IRQ:
alloced = &scp->irq_alloced;
rid_max = 0;
break;
case SYS_RES_DRQ:
alloced = scp->drq_alloced;
rid_max = 1;
break;
default:
return (1);
}
if (rid > rid_max || alloced[rid] == 0)
return (1);
alloced[rid]--;
return (0);
}
static int
gusc_setup_intr(device_t dev, device_t child, struct resource *irq, int flags,
#if __FreeBSD_version >= 700031
driver_filter_t *filter,
#endif
driver_intr_t *intr, void *arg, void **cookiep)
{
sc_p scp = (sc_p)device_get_softc(dev);
devclass_t devclass;
#if __FreeBSD_version >= 700031
if (filter != NULL) {
printf("gusc.c: we cannot use a filter here\n");
return (EINVAL);
}
#endif
devclass = device_get_devclass(child);
if (strcmp(devclass_get_name(devclass), "midi") == 0) {
scp->midi_intr.intr = intr;
scp->midi_intr.arg = arg;
return 0;
} else if (strcmp(devclass_get_name(devclass), "pcm") == 0) {
scp->pcm_intr.intr = intr;
scp->pcm_intr.arg = arg;
return 0;
}
return bus_generic_setup_intr(dev, child, irq, flags,
#if __FreeBSD_version >= 700031
filter,
#endif
intr, arg, cookiep);
}
static device_t
find_masterdev(sc_p scp)
{
int i, units;
devclass_t devclass;
device_t dev;
devclass = device_get_devclass(scp->dev);
units = devclass_get_maxunit(devclass);
dev = NULL;
for (i = 0 ; i < units ; i++) {
dev = devclass_get_device(devclass, i);
if (isa_get_vendorid(dev) == isa_get_vendorid(scp->dev)
&& isa_get_logicalid(dev) == LOGICALID_PCM
&& isa_get_serial(dev) == isa_get_serial(scp->dev))
break;
}
if (i == units)
return (NULL);
return (dev);
}
static int io_range[3] = {0x10, 0x8 , 0x4 };
static int io_offset[3] = {0x0 , 0x100, 0x10c};
static int
alloc_resource(sc_p scp)
{
int i, base, lid, flags;
device_t dev;
flags = 0;
if (isa_get_vendorid(scp->dev))
lid = isa_get_logicalid(scp->dev);
else {
lid = LOGICALID_NOPNP;
flags = device_get_flags(scp->dev);
}
switch(lid) {
case LOGICALID_PCM:
case LOGICALID_NOPNP: /* XXX Non-PnP */
if (lid == LOGICALID_NOPNP)
base = isa_get_port(scp->dev);
else
base = 0;
for (i = 0 ; i < sizeof(scp->io) / sizeof(*scp->io) ; i++) {
if (scp->io[i] == NULL) {
scp->io_rid[i] = i;
if (base == 0)
scp->io[i] = bus_alloc_resource(scp->dev, SYS_RES_IOPORT, &scp->io_rid[i],
0, ~0, io_range[i], RF_ACTIVE);
else
scp->io[i] = bus_alloc_resource(scp->dev, SYS_RES_IOPORT, &scp->io_rid[i],
base + io_offset[i],
base + io_offset[i] + io_range[i] - 1
, io_range[i], RF_ACTIVE);
if (scp->io[i] == NULL)
return (1);
scp->io_alloced[i] = 0;
}
}
if (scp->irq == NULL) {
scp->irq_rid = 0;
scp->irq =
bus_alloc_resource_any(scp->dev, SYS_RES_IRQ,
&scp->irq_rid,
RF_ACTIVE|RF_SHAREABLE);
if (scp->irq == NULL)
return (1);
scp->irq_alloced = 0;
}
for (i = 0 ; i < sizeof(scp->drq) / sizeof(*scp->drq) ; i++) {
if (scp->drq[i] == NULL) {
scp->drq_rid[i] = i;
if (base == 0 || i == 0)
scp->drq[i] =
bus_alloc_resource_any(
scp->dev, SYS_RES_DRQ,
&scp->drq_rid[i],
RF_ACTIVE);
else if ((flags & DV_F_DUAL_DMA) != 0)
/* XXX The secondary drq is specified in the flag. */
scp->drq[i] = bus_alloc_resource(scp->dev, SYS_RES_DRQ, &scp->drq_rid[i],
flags & DV_F_DRQ_MASK,
flags & DV_F_DRQ_MASK, 1, RF_ACTIVE);
if (scp->drq[i] == NULL)
return (1);
scp->drq_alloced[i] = 0;
}
}
break;
case LOGICALID_OPL:
if (scp->io[0] == NULL) {
scp->io_rid[0] = 0;
scp->io[0] = bus_alloc_resource(scp->dev, SYS_RES_IOPORT, &scp->io_rid[0],
0, ~0, io_range[0], RF_ACTIVE);
if (scp->io[0] == NULL)
return (1);
scp->io_alloced[0] = 0;
}
break;
case LOGICALID_MIDI:
if (scp->io[0] == NULL) {
scp->io_rid[0] = 0;
scp->io[0] = bus_alloc_resource(scp->dev, SYS_RES_IOPORT, &scp->io_rid[0],
0, ~0, io_range[0], RF_ACTIVE);
if (scp->io[0] == NULL)
return (1);
scp->io_alloced[0] = 0;
}
if (scp->irq == NULL) {
/* The irq is shared with pcm audio. */
dev = find_masterdev(scp);
if (dev == NULL)
return (1);
scp->irq_rid = 0;
scp->irq = BUS_ALLOC_RESOURCE(dev, NULL, SYS_RES_IRQ, &scp->irq_rid,
0, ~0, 1, RF_ACTIVE | RF_SHAREABLE);
if (scp->irq == NULL)
return (1);
scp->irq_alloced = 0;
}
break;
}
return (0);
}
static int
release_resource(sc_p scp)
{
int i, lid;
device_t dev;
if (isa_get_vendorid(scp->dev))
lid = isa_get_logicalid(scp->dev);
else
lid = LOGICALID_NOPNP;
switch(lid) {
case LOGICALID_PCM:
case LOGICALID_NOPNP: /* XXX Non-PnP */
for (i = 0 ; i < sizeof(scp->io) / sizeof(*scp->io) ; i++) {
if (scp->io[i] != NULL) {
bus_release_resource(scp->dev, SYS_RES_IOPORT, scp->io_rid[i], scp->io[i]);
scp->io[i] = NULL;
}
}
if (scp->irq != NULL) {
bus_release_resource(scp->dev, SYS_RES_IRQ, scp->irq_rid, scp->irq);
scp->irq = NULL;
}
for (i = 0 ; i < sizeof(scp->drq) / sizeof(*scp->drq) ; i++) {
if (scp->drq[i] != NULL) {
bus_release_resource(scp->dev, SYS_RES_DRQ, scp->drq_rid[i], scp->drq[i]);
scp->drq[i] = NULL;
}
}
break;
case LOGICALID_OPL:
if (scp->io[0] != NULL) {
bus_release_resource(scp->dev, SYS_RES_IOPORT, scp->io_rid[0], scp->io[0]);
scp->io[0] = NULL;
}
break;
case LOGICALID_MIDI:
if (scp->io[0] != NULL) {
bus_release_resource(scp->dev, SYS_RES_IOPORT, scp->io_rid[0], scp->io[0]);
scp->io[0] = NULL;
}
if (scp->irq != NULL) {
/* The irq is shared with pcm audio. */
dev = find_masterdev(scp);
if (dev == NULL)
return (1);
BUS_RELEASE_RESOURCE(dev, NULL, SYS_RES_IOPORT, scp->irq_rid, scp->irq);
scp->irq = NULL;
}
break;
}
return (0);
}
static device_method_t gusc_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, gusc_probe),
DEVMETHOD(device_attach, gusc_attach),
DEVMETHOD(device_detach, bus_generic_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* Bus interface */
DEVMETHOD(bus_alloc_resource, gusc_alloc_resource),
DEVMETHOD(bus_release_resource, gusc_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_setup_intr, gusc_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
DEVMETHOD_END
};
static driver_t gusc_driver = {
"gusc",
gusc_methods,
sizeof(struct gusc_softc),
};
/*
* gusc can be attached to an isa bus.
*/
DRIVER_MODULE(snd_gusc, isa, gusc_driver, gusc_devclass, 0, 0);
DRIVER_MODULE(snd_gusc, acpi, gusc_driver, gusc_devclass, 0, 0);
MODULE_DEPEND(snd_gusc, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
MODULE_VERSION(snd_gusc, 1);
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