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sparc32_dma: switch over to using IOMMU memory region and DMA API 

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
This commit is contained in:
Mark Cave-Ayland 2017-10-27 13:09:03 +01:00
parent 8413846631
commit c413e9a426
1 changed files with 11 additions and 6 deletions
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17
hw/dma/sparc32_dma.c
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@ -30,6 +30,7 @@
#include "hw/sparc/sparc32_dma.h"
#include "hw/sparc/sun4m.h"
#include "hw/sysbus.h"
#include "sysemu/dma.h"
#include "qapi/error.h"
#include "trace.h"
@ -71,16 +72,17 @@ void ledma_memory_read(void *opaque, hwaddr addr,
uint8_t *buf, int len, int do_bswap)
{
DMADeviceState *s = opaque;
IOMMUState *is = (IOMMUState *)s->iommu;
int i;
addr |= s->dmaregs[3];
trace_ledma_memory_read(addr, len);
if (do_bswap) {
sparc_iommu_memory_read(s->iommu, addr, buf, len);
dma_memory_read(&is->iommu_as, addr, buf, len);
} else {
addr &= ~1;
len &= ~1;
sparc_iommu_memory_read(s->iommu, addr, buf, len);
dma_memory_read(&is->iommu_as, addr, buf, len);
for(i = 0; i < len; i += 2) {
bswap16s((uint16_t *)(buf + i));
}
@ -91,13 +93,14 @@ void ledma_memory_write(void *opaque, hwaddr addr,
uint8_t *buf, int len, int do_bswap)
{
DMADeviceState *s = opaque;
IOMMUState *is = (IOMMUState *)s->iommu;
int l, i;
uint16_t tmp_buf[32];
addr |= s->dmaregs[3];
trace_ledma_memory_write(addr, len);
if (do_bswap) {
sparc_iommu_memory_write(s->iommu, addr, buf, len);
dma_memory_write(&is->iommu_as, addr, buf, len);
} else {
addr &= ~1;
len &= ~1;
@ -108,7 +111,7 @@ void ledma_memory_write(void *opaque, hwaddr addr,
for(i = 0; i < l; i += 2) {
tmp_buf[i >> 1] = bswap16(*(uint16_t *)(buf + i));
}
sparc_iommu_memory_write(s->iommu, addr, (uint8_t *)tmp_buf, l);
dma_memory_write(&is->iommu_as, addr, tmp_buf, l);
len -= l;
buf += l;
addr += l;
@ -139,18 +142,20 @@ static void dma_set_irq(void *opaque, int irq, int level)
void espdma_memory_read(void *opaque, uint8_t *buf, int len)
{
DMADeviceState *s = opaque;
IOMMUState *is = (IOMMUState *)s->iommu;
trace_espdma_memory_read(s->dmaregs[1], len);
sparc_iommu_memory_read(s->iommu, s->dmaregs[1], buf, len);
dma_memory_read(&is->iommu_as, s->dmaregs[1], buf, len);
s->dmaregs[1] += len;
}
void espdma_memory_write(void *opaque, uint8_t *buf, int len)
{
DMADeviceState *s = opaque;
IOMMUState *is = (IOMMUState *)s->iommu;
trace_espdma_memory_write(s->dmaregs[1], len);
sparc_iommu_memory_write(s->iommu, s->dmaregs[1], buf, len);
dma_memory_write(&is->iommu_as, s->dmaregs[1], buf, len);
s->dmaregs[1] += len;
}