Le 25/10/2019 à 16:01, Paolo Bonzini a écrit :
> On 22/10/19 13:17, Laurent Vivier wrote:
>> +if (s->dma_memory_read) {
>> +s->dma_memory_read(s->dma_opaque, &s->cmdbuf[s->cmdlen], len);
>> +} else {
>> +set_pdma(s, CMD, s->cmdlen, len);
>> +s->pd
Le 22/10/2019 à 14:21, Philippe Mathieu-Daudé a écrit :
> Hi Laurent,
>
> On 10/22/19 1:17 PM, Laurent Vivier wrote:
>> There is no DMA in Quadra 800, so the CPU reads/writes the data from the
>> PDMA register (offset 0x100, ESP_PDMA in hw/m68k/q800.c) and copies them
>> to/from the memory.
>>
>>
Le 25/10/2019 à 16:54, Philippe Mathieu-Daudé a écrit :
> On 10/25/19 4:01 PM, Paolo Bonzini wrote:
>> On 22/10/19 13:17, Laurent Vivier wrote:
>>> + if (s->dma_memory_read) {
>>> + s->dma_memory_read(s->dma_opaque, &s->cmdbuf[s->cmdlen],
>>> len);
>>> + } else {
>>> +
On 10/25/19 4:01 PM, Paolo Bonzini wrote:
On 22/10/19 13:17, Laurent Vivier wrote:
+if (s->dma_memory_read) {
+s->dma_memory_read(s->dma_opaque, &s->cmdbuf[s->cmdlen], len);
+} else {
+set_pdma(s, CMD, s->cmdlen, len);
+s->pdma_cb = do_dma_pdma
On 22/10/19 13:17, Laurent Vivier wrote:
> +if (s->dma_memory_read) {
> +s->dma_memory_read(s->dma_opaque, &s->cmdbuf[s->cmdlen], len);
> +} else {
> +set_pdma(s, CMD, s->cmdlen, len);
> +s->pdma_cb = do_dma_pdma_cb;
> +esp_raise_drq(s
Le 22/10/2019 à 14:21, Philippe Mathieu-Daudé a écrit :
> Hi Laurent,
>
> On 10/22/19 1:17 PM, Laurent Vivier wrote:
>> There is no DMA in Quadra 800, so the CPU reads/writes the data from the
>> PDMA register (offset 0x100, ESP_PDMA in hw/m68k/q800.c) and copies them
>> to/from the memory.
>>
>>
Hi Laurent,
On 10/22/19 1:17 PM, Laurent Vivier wrote:
There is no DMA in Quadra 800, so the CPU reads/writes the data from the
PDMA register (offset 0x100, ESP_PDMA in hw/m68k/q800.c) and copies them
to/from the memory.
There is a nice assembly loop in the kernel to do that, see
linux/drivers/
There is no DMA in Quadra 800, so the CPU reads/writes the data from the
PDMA register (offset 0x100, ESP_PDMA in hw/m68k/q800.c) and copies them
to/from the memory.
There is a nice assembly loop in the kernel to do that, see
linux/drivers/scsi/mac_esp.c:MAC_ESP_PDMA_LOOP().
The start of the tran
