int dma_memory_set(DMAContext *dma, dma_addr_t addr, uint8_t c, dma_addr_t len)
{
dma_barrier(dma, DMA_DIRECTION_FROM_DEVICE);
if (dma_has_iommu(dma)) {
return iommu_dma_memory_set(dma, addr, c, len);
}
do_dma_memory_set(dma->as, addr, c, len);
return 0;
}
int dma_memory_set(AddressSpace *as, dma_addr_t addr, uint8_t c, dma_addr_t len)
{
dma_barrier(as, DMA_DIRECTION_FROM_DEVICE);
#define FILLBUF_SIZE 512
uint8_t fillbuf[FILLBUF_SIZE];
int l;
bool error = false;
memset(fillbuf, c, FILLBUF_SIZE);
while (len > 0) {
l = len < FILLBUF_SIZE ? len : FILLBUF_SIZE;
error |= address_space_rw(as, addr, fillbuf, l, true);
len -= l;
addr += l;
}
return error;
}