File size: 2,812 Bytes
e737d04 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 | #include "virtgpu-shm.h"
#include "virtgpu.h"
#include <assert.h>
static uint32_t virtgpu_ioctl_resource_create_blob(virtgpu * gpu,
uint32_t blob_mem,
uint32_t blob_flags,
size_t blob_size,
uint64_t blob_id,
uint32_t * res_id) {
#ifdef SIMULATE_BO_SIZE_FIX
blob_size = align64(blob_size, 4096);
#endif
drm_virtgpu_resource_create_blob args = {
.blob_mem = blob_mem,
.blob_flags = blob_flags,
.bo_handle = 0,
.res_handle = 0,
.size = blob_size,
.pad = 0,
.cmd_size = 0,
.cmd = 0,
.blob_id = blob_id,
};
if (virtgpu_ioctl(gpu, DRM_IOCTL_VIRTGPU_RESOURCE_CREATE_BLOB, &args)) {
return 0;
}
*res_id = args.res_handle;
return args.bo_handle;
}
static void virtgpu_ioctl_gem_close(virtgpu * gpu, uint32_t gem_handle) {
drm_gem_close args = {
.handle = gem_handle,
.pad = 0,
};
const int ret = virtgpu_ioctl(gpu, DRM_IOCTL_GEM_CLOSE, &args);
assert(!ret);
#ifdef NDEBUG
UNUSED(ret);
#endif
}
static void * virtgpu_ioctl_map(virtgpu * gpu, uint32_t gem_handle, size_t size) {
drm_virtgpu_map args = {
.offset = 0,
.handle = gem_handle,
.pad = 0,
};
if (virtgpu_ioctl(gpu, DRM_IOCTL_VIRTGPU_MAP, &args)) {
return NULL;
}
void * ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, gpu->fd, args.offset);
if (ptr == MAP_FAILED) {
return NULL;
}
return ptr;
}
void virtgpu_shmem_destroy(virtgpu * gpu, virtgpu_shmem * shmem) {
munmap(shmem->mmap_ptr, shmem->mmap_size);
virtgpu_ioctl_gem_close(gpu, shmem->gem_handle);
}
int virtgpu_shmem_create(virtgpu * gpu, size_t size, virtgpu_shmem * shmem) {
size = align64(size, 16384);
uint32_t res_id;
uint32_t gem_handle = virtgpu_ioctl_resource_create_blob(gpu, VIRTGPU_BLOB_MEM_HOST3D,
VIRTGPU_BLOB_FLAG_USE_MAPPABLE, size, 0, &res_id);
if (!gem_handle) {
return 1;
}
void * ptr = virtgpu_ioctl_map(gpu, gem_handle, size);
if (!ptr) {
virtgpu_ioctl_gem_close(gpu, gem_handle);
GGML_LOG_ERROR(GGML_VIRTGPU "%s: virtgpu_ioctl_map failed\n", __func__);
return 1;
}
shmem->res_id = res_id;
shmem->mmap_size = size;
shmem->mmap_ptr = ptr;
shmem->gem_handle = gem_handle;
return 0;
}
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