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Add another card to the list of Neomagic 256AV's which don't have AC97

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codecs. Also, add some additional code to check for future cards without
this feature - attempting to initialise them as AC97 cards will hang the
machine.

PR:		26427
Reviewed by:	cg
This commit is contained in:
George C A Reid 2001-04-10 14:28:21 +00:00
parent f72b6281c2
commit e572fcd463
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=75382
2 changed files with 48 additions and 1 deletions
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44
sys/dev/sound/pci/neomagic.c
View file

@ -92,6 +92,7 @@ static u_int32_t badcards[] = {
0x0007103c,
0x008f1028,
0x00dd1014,
0x8005110a,
};
#define NUM_BADCARDS (sizeof(badcards) / sizeof(u_int32_t))
@ -553,8 +554,9 @@ nm_init(struct sc_info *sc)
static int
nm_pci_probe(device_t dev)
{
struct sc_info *sc = NULL;
char *s = NULL;
u_int32_t subdev, i;
u_int32_t subdev, i, data;
subdev = (pci_get_subdevice(dev) << 16) | pci_get_subvendor(dev);
switch (pci_get_devid(dev)) {
@ -562,10 +564,50 @@ nm_pci_probe(device_t dev)
i = 0;
while ((i < NUM_BADCARDS) && (badcards[i] != subdev))
i++;
/* Try to catch other non-ac97 cards */
if (i == NUM_BADCARDS) {
if (!(sc = malloc(sizeof(*sc), M_DEVBUF,
M_NOWAIT | M_ZERO))) {
device_printf(dev, "cannot allocate softc\n");
return ENXIO;
}
data = pci_read_config(dev, PCIR_COMMAND, 2);
pci_write_config(dev, PCIR_COMMAND, data |
PCIM_CMD_PORTEN | PCIM_CMD_MEMEN |
PCIM_CMD_BUSMASTEREN, 2);
sc->regid = PCIR_MAPS + 4;
sc->reg = bus_alloc_resource(dev, SYS_RES_MEMORY,
&sc->regid, 0, ~0, 1,
RF_ACTIVE);
if (!sc->reg) {
device_printf(dev, "unable to map register space\n");
pci_write_config(dev, PCIR_COMMAND, data, 2);
free(sc, M_DEVBUF);
return ENXIO;
}
if ((nm_rd(sc, NM_MIXER_PRESENCE, 2) &
NM_PRESENCE_MASK) != NM_PRESENCE_VALUE) {
i = 0; /* non-ac97 card, but not listed */
DEB(device_printf(dev, "subdev = 0x%x - badcard?\n",
subdev));
}
pci_write_config(dev, PCIR_COMMAND, data, 2);
bus_release_resource(dev, SYS_RES_MEMORY, sc->regid,
sc->reg);
free(sc, M_DEVBUF);
}
if (i == NUM_BADCARDS)
s = "NeoMagic 256AV";
DEB(else)
DEB(device_printf(dev, "this is a non-ac97 NM256AV, not attaching\n"));
break;
case NM256ZX_PCI_ID:

5
sys/dev/sound/pci/neomagic.h
View file

@ -42,6 +42,11 @@
/* The base offset of the mixer in the second memory area. */
#define NM_MIXER_OFFSET 0x600
/* The base offset for the AC97 test */
#define NM_MIXER_PRESENCE 0xa06
#define NM_PRESENCE_MASK 0x050
#define NM_PRESENCE_VALUE 0x040
/* The maximum size of a coefficient entry. */
#define NM_MAX_COEFFICIENT 0x5000