sim-card
/
qemu
Archived
10
0
Fork 0
Code Releases Activity

ac97: Use PCI DMA stub functions 

This updates the ac97 device emulation to use the explicit PCI DMA
functions, instead of directly calling physical memory access functions.

Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Eduard - Gabriel Munteanu 2011-10-31 17:06:50 +11:00 committed by Anthony Liguori
parent 16ef60c9a8
commit 93f43c4888
1 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
hw/ac97.c
View File

@ -18,6 +18,7 @@
#include "audiodev.h"
#include "audio/audio.h"
#include "pci.h"
#include "dma.h"
enum {
AC97_Reset = 0x00,
@ -224,7 +225,7 @@ static void fetch_bd (AC97LinkState *s, AC97BusMasterRegs *r)
{
uint8_t b[8];
cpu_physical_memory_read (r->bdbar + r->civ * 8, b, 8);
pci_dma_read (&s->dev, r->bdbar + r->civ * 8, b, 8);
r->bd_valid = 1;
r->bd.addr = le32_to_cpu (*(uint32_t *) &b[0]) & ~3;
r->bd.ctl_len = le32_to_cpu (*(uint32_t *) &b[4]);
@ -973,7 +974,7 @@ static int write_audio (AC97LinkState *s, AC97BusMasterRegs *r,
while (temp) {
int copied;
to_copy = audio_MIN (temp, sizeof (tmpbuf));
cpu_physical_memory_read (addr, tmpbuf, to_copy);
pci_dma_read (&s->dev, addr, tmpbuf, to_copy);
copied = AUD_write (s->voice_po, tmpbuf, to_copy);
dolog ("write_audio max=%x to_copy=%x copied=%x\n",
max, to_copy, copied);
@ -1054,7 +1055,7 @@ static int read_audio (AC97LinkState *s, AC97BusMasterRegs *r,
*stop = 1;
break;
}
cpu_physical_memory_write (addr, tmpbuf, acquired);
pci_dma_write (&s->dev, addr, tmpbuf, acquired);
temp -= acquired;
addr += acquired;
nread += acquired;