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sb16 patch (malc) 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@561 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2004-01-18 22:19:31 +00:00
parent 630be16f6c
commit bc0b1dc1eb
1 changed files with 23 additions and 10 deletions
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33
hw/sb16.c
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@ -37,6 +37,7 @@
abort (); \
} while (0)
/* #define DEBUG_SB16 */
#ifdef DEBUG_SB16
#define lwarn(...) fprintf (stderr, "sb16: " __VA_ARGS__)
#define linfo(...) fprintf (stderr, "sb16: " __VA_ARGS__)
@ -60,7 +61,7 @@ static struct {
int hdma;
int port;
int mix_block;
} sb = {4, 5, 5, 1, 5, 0x220, -1};
} sb = {5, 4, 5, 1, 5, 0x220, -1};
static int mix_block, noirq;
@ -205,7 +206,7 @@ static void command (uint8_t cmd)
{
char *msg;
msg = (char *)-1;
msg = (char *) -1;
linfo ("%#x\n", cmd);
@ -225,6 +226,12 @@ static void command (uint8_t cmd)
}
else {
switch (cmd) {
case 0x00:
case 0x03:
case 0xe7:
/* IMS uses those when probing for sound devices */
return;
case 0x10:
dsp.needed_bytes = 1;
break;
@ -328,7 +335,7 @@ static void command (uint8_t cmd)
case 0xf2:
dsp.out_data[dsp.out_data_len++] = 0xaa;
mixer.regs[0x82] |= 1;
mixer.regs[0x82] |= mixer.regs[0x80];
pic_set_irq (sb.irq, 1);
return;
@ -500,13 +507,19 @@ static IO_READ_PROTO (dsp_read)
goto error;
case 0xe: /* data available status | irq 8 ack */
/* XXX drop pic irq line here? */
ldebug ("8 ack\n");
retval = (0 == dsp.out_data_len) ? 0 : 0x80;
mixer.regs[0x82] &= ~mixer.regs[0x80];
pic_set_irq (sb.irq, 0);
break;
case 0xf: /* irq 16 ack */
retval = 0xff;
mixer.regs[0x82] &= ~2;
/* XXX drop pic irq line here? */
ldebug ("16 ack\n");
retval = 0xff;
mixer.regs[0x82] &= ~mixer.regs[0x80];
pic_set_irq (sb.irq, 0);
break;
default:
@ -514,8 +527,8 @@ static IO_READ_PROTO (dsp_read)
}
if ((0xc != iport) && (0xe != iport)) {
ldebug ("(nport=%#x, size=%d) iport %#x = %#x\n",
nport, size, iport, retval);
ldebug ("nport=%#x iport %#x = %#x\n",
nport, iport, retval);
}
return retval;
@ -617,8 +630,6 @@ static int SB_read_DMA (uint32_t addr, int size, int *_irq)
ldebug ("addr:%#010x free:%d till:%d size:%d\n",
addr, free, till, size);
/* linfo ("pos %d free %d size %d till %d copy %d auto %d noirq %d\n", */
/* dsp.dma_pos, free, size, till, copy, dsp.dma_auto, noirq); */
if (till <= copy) {
if (0 == dsp.dma_auto) {
copy = till;
@ -631,8 +642,10 @@ static int SB_read_DMA (uint32_t addr, int size, int *_irq)
if (dsp.left_till_irq <= 0) {
mixer.regs[0x82] |= mixer.regs[0x80];
if (0 == noirq)
if (0 == noirq) {
ldebug ("request irq\n");
*_irq = sb.irq;
}
if (0 == dsp.dma_auto) {
control (0);