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gus: use IsaDma interface instead of global DMA_* functions 

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Message-id: 1453843944-26833-18-git-send-email-hpoussin@reactos.org
Signed-off-by: John Snow <jsnow@redhat.com>
This commit is contained in:
Hervé Poussineau 2016-02-03 11:28:58 -05:00 committed by John Snow
parent 2d01109133
commit 467be5f2f0
1 changed files with 13 additions and 7 deletions
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20
hw/audio/gus.c
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@ -58,6 +58,7 @@ typedef struct GUSState {
SWVoiceOut *voice;
int64_t last_ticks;
qemu_irq pic;
IsaDma *isa_dma;
} GUSState;
static uint32_t gus_readb(void *opaque, uint32_t nport)
@ -168,34 +169,36 @@ void GUS_irqclear (GUSEmuState *emu, int hwirq)
#endif
}
void GUS_dmarequest (GUSEmuState *der)
void GUS_dmarequest (GUSEmuState *emu)
{
/* GUSState *s = (GUSState *) der; */
GUSState *s = emu->opaque;
IsaDmaClass *k = ISADMA_GET_CLASS(s->isa_dma);
ldebug ("dma request %d\n", der->gusdma);
DMA_hold_DREQ (der->gusdma);
k->hold_DREQ(s->isa_dma, s->emu.gusdma);
}
static int GUS_read_DMA (void *opaque, int nchan, int dma_pos, int dma_len)
{
GUSState *s = opaque;
IsaDmaClass *k = ISADMA_GET_CLASS(s->isa_dma);
char tmpbuf[4096];
int pos = dma_pos, mode, left = dma_len - dma_pos;
ldebug ("read DMA %#x %d\n", dma_pos, dma_len);
mode = DMA_get_channel_mode (s->emu.gusdma);
mode = k->has_autoinitialization(s->isa_dma, s->emu.gusdma);
while (left) {
int to_copy = audio_MIN ((size_t) left, sizeof (tmpbuf));
int copied;
ldebug ("left=%d to_copy=%d pos=%d\n", left, to_copy, pos);
copied = DMA_read_memory (nchan, tmpbuf, pos, to_copy);
copied = k->read_memory(s->isa_dma, nchan, tmpbuf, pos, to_copy);
gus_dma_transferdata (&s->emu, tmpbuf, copied, left == copied);
left -= copied;
pos += copied;
}
if (((mode >> 4) & 1) == 0) {
DMA_release_DREQ (s->emu.gusdma);
k->release_DREQ(s->isa_dma, s->emu.gusdma);
}
return dma_len;
}
@ -232,6 +235,7 @@ static void gus_realizefn (DeviceState *dev, Error **errp)
{
ISADevice *d = ISA_DEVICE(dev);
GUSState *s = GUS (dev);
IsaDmaClass *k;
struct audsettings as;
AUD_register_card ("gus", &s->card);
@ -264,7 +268,9 @@ static void gus_realizefn (DeviceState *dev, Error **errp)
isa_register_portio_list (d, (s->port + 0x100) & 0xf00,
gus_portio_list2, s, "gus");
DMA_register_channel (s->emu.gusdma, GUS_read_DMA, s);
s->isa_dma = isa_get_dma(isa_bus_from_device(d), s->emu.gusdma);
k = ISADMA_GET_CLASS(s->isa_dma);
k->register_channel(s->isa_dma, s->emu.gusdma, GUS_read_DMA, s);
s->emu.himemaddr = s->himem;
s->emu.gusdatapos = s->emu.himemaddr + 1024 * 1024 + 32;
s->emu.opaque = s;