Revision f9e92e97 hw/sb16.c
| b/hw/sb16.c | ||
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| 25 | 25 |
#include <stdlib.h> |
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#include <inttypes.h> |
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|
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#include "cpu.h" |
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#include "vl.h" |
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|
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#define MIN(a, b) ((a)>(b)?(b):(a)) |
| ... | ... | |
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static int write_audio (uint32_t addr, int len, int size) |
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{
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int temp, net; |
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uint8_t tmpbuf[4096]; |
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temp = size; |
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|
| ... | ... | |
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left_till_end = len - dsp.dma_pos; |
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|
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to_copy = MIN (temp, left_till_end); |
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|
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copied = AUD_write ((void *) (addr + dsp.dma_pos), to_copy); |
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if (to_copy > sizeof(tmpbuf)) |
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to_copy = sizeof(tmpbuf); |
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cpu_physical_memory_read(addr + dsp.dma_pos, tmpbuf, to_copy); |
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copied = AUD_write (tmpbuf, to_copy); |
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temp -= copied; |
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dsp.dma_pos += copied; |
| ... | ... | |
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return net; |
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} |
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|
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static int SB_read_DMA (uint32_t addr, int size, int *_irq)
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static int SB_read_DMA (void *opaque, target_ulong addr, int size)
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{
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int free, till, copy, written; |
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|
| ... | ... | |
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mixer.regs[0x82] |= mixer.regs[0x80]; |
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if (0 == noirq) {
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ldebug ("request irq\n");
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*_irq = sb.irq;
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pic_set_irq(sb.irq, 1);
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} |
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|
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if (0 == dsp.dma_auto) {
|
| ... | ... | |
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return dsp.dma_pos; |
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} |
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static int dma_misc_handler (int moo) |
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{
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return -1; |
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} |
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|
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static int magic_of_irq (int irq) |
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{
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switch (irq) {
|
| ... | ... | |
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register_ioport_read (sb.port + 0x5, 1, mixer_read, 1); |
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register_ioport_write (sb.port + 0x5, 1, mixer_write_datab, 1); |
| 733 | 732 |
|
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DMA_register_channel (sb.hdma, SB_read_DMA, dma_misc_handler);
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DMA_register_channel (sb.dma, SB_read_DMA, dma_misc_handler);
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DMA_register_channel (sb.hdma, SB_read_DMA, NULL);
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DMA_register_channel (sb.dma, SB_read_DMA, NULL);
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} |
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