static gpudata *cuda_alloc(void *c, size_t size, void *data, int flags,
int *ret) {
gpudata *res = NULL, *prev = NULL;
cuda_context *ctx = (cuda_context *)c;
size_t asize;
int err;
if ((flags & GA_BUFFER_INIT) && data == NULL) FAIL(NULL, GA_VALUE_ERROR);
if ((flags & (GA_BUFFER_READ_ONLY|GA_BUFFER_WRITE_ONLY)) ==
(GA_BUFFER_READ_ONLY|GA_BUFFER_WRITE_ONLY)) FAIL(NULL, GA_VALUE_ERROR);
/* TODO: figure out how to make this work */
if (flags & GA_BUFFER_HOST) FAIL(NULL, GA_DEVSUP_ERROR);
/* We don't want to manage really small allocations so we round up
* to a multiple of FRAG_SIZE. This also ensures that if we split a
* block, the next block starts properly aligned for any data type.
*/
if (!(ctx->flags & GA_CTX_DISABLE_ALLOCATION_CACHE)) {
asize = roundup(size, FRAG_SIZE);
find_best(ctx, &res, &prev, asize);
} else {
asize = size;
}
if (res == NULL) {
err = allocate(ctx, &res, &prev, asize);
if (err != GA_NO_ERROR)
FAIL(NULL, err);
}
err = extract(res, prev, asize);
if (err != GA_NO_ERROR)
FAIL(NULL, err);
/* It's out of the freelist, so add a ref */
res->ctx->refcnt++;
/* We consider this buffer allocated and ready to go */
res->refcnt = 1;
if (flags & GA_BUFFER_INIT) {
err = cuda_write(res, 0, data, size);
if (err != GA_NO_ERROR) {
cuda_free(res);
FAIL(NULL, err);
}
}
return res;
}
/* Construct and send a cuda request */
int
cuda_request(struct adb_request *req, void (*done)(struct adb_request *),
int nbytes, ...)
{
va_list list;
int i;
if (via == NULL) {
req->complete = 1;
return -ENXIO;
}
req->nbytes = nbytes;
req->done = done;
va_start(list, nbytes);
for (i = 0; i < nbytes; ++i)
req->data[i] = va_arg(list, int);
va_end(list);
req->reply_expected = 1;
return cuda_write(req);
}
/* Send an ADB command */
static int
cuda_send_request(struct adb_request *req, int sync)
{
int i;
if ((via == NULL) || !cuda_fully_inited) {
req->complete = 1;
return -ENXIO;
}
req->reply_expected = 1;
i = cuda_write(req);
if (i)
return i;
if (sync) {
while (!req->complete)
cuda_poll();
}
return 0;
}