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cuda: add a framework to handle commands 

Next commits will port existing CUDA commands to this framework.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Hervé Poussineau 2016-02-07 21:34:04 +01:00 committed by David Gibson
parent e49ff266f8
commit d20efaeb13
1 changed files with 34 additions and 0 deletions
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34
hw/misc/macio/cuda.c
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@ -535,13 +535,47 @@ static void cuda_adb_poll(void *opaque)
(get_ticks_per_sec() / CUDA_ADB_POLL_FREQ));
}
/* description of commands */
typedef struct CudaCommand {
uint8_t command;
const char *name;
bool (*handler)(CUDAState *s,
const uint8_t *in_args, int in_len,
uint8_t *out_args, int *out_len);
} CudaCommand;
static const CudaCommand handlers[] = {
};
static void cuda_receive_packet(CUDAState *s,
const uint8_t *data, int len)
{
uint8_t obuf[16] = { CUDA_PACKET, 0, data[0] };
int autopoll;
int i, out_len = 0;
uint32_t ti;
for (i = 0; i < ARRAY_SIZE(handlers); i++) {
const CudaCommand *desc = &handlers[i];
if (desc->command == data[0]) {
CUDA_DPRINTF("handling command %s\n", desc->name);
out_len = 0;
if (desc->handler(s, data + 1, len - 1, obuf + 3, &out_len)) {
cuda_send_packet_to_host(s, obuf, 3 + out_len);
} else {
qemu_log_mask(LOG_GUEST_ERROR,
"CUDA: %s: wrong parameters %d\n",
desc->name, len);
obuf[0] = ERROR_PACKET;
obuf[1] = 0x5; /* bad parameters */
obuf[2] = CUDA_PACKET;
obuf[3] = data[0];
cuda_send_packet_to_host(s, obuf, 4);
}
return;
}
}
switch(data[0]) {
case CUDA_AUTOPOLL:
autopoll = (data[1] != 0);