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/*
* Copyright © 2014 Broadcom
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include <errno.h>
#include <err.h>
#include <stdio.h>
#include <sys/mman.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include "util/u_memory.h"
#include "vc4_context.h"
#include "vc4_screen.h"
struct vc4_bo *
vc4_bo_alloc(struct vc4_screen *screen, uint32_t size, const char *name)
{
struct vc4_bo *bo = CALLOC_STRUCT(vc4_bo);
if (!bo)
return NULL;
pipe_reference_init(&bo->reference, 1);
bo->screen = screen;
bo->size = size;
bo->name = name;
#ifndef USE_VC4_SIMULATOR
struct drm_mode_create_dumb create;
memset(&create, 0, sizeof(create));
create.width = 128;
create.bpp = 8;
create.height = (size + 127) / 128;
int ret = drmIoctl(screen->fd, DRM_IOCTL_MODE_CREATE_DUMB, &create);
if (ret != 0)
errx(1, "create ioctl");
bo->handle = create.handle;
assert(create.size >= size);
#else /* USE_VC4_SIMULATOR */
static int next_handle = 0;
bo->handle = next_handle++;
bo->map = malloc(size);
#endif /* USE_VC4_SIMULATOR */
return bo;
}
void
vc4_bo_free(struct vc4_bo *bo)
{
#ifndef USE_VC4_SIMULATOR
struct vc4_screen *screen = bo->screen;
if (bo->map)
munmap(bo->map, bo->size);
struct drm_gem_close c;
c.handle = bo->handle;
int ret = drmIoctl(screen->fd, DRM_IOCTL_GEM_CLOSE, &c);
if (ret != 0)
fprintf(stderr, "close object %d: %s\n", bo->handle, strerror(errno));
#else
free(bo->map);
#endif
free(bo);
}
struct vc4_bo *
vc4_bo_open_name(struct vc4_screen *screen, uint32_t name,
uint32_t winsys_stride)
{
struct vc4_bo *bo = CALLOC_STRUCT(vc4_bo);
struct drm_gem_open o;
o.name = name;
int ret = drmIoctl(screen->fd, DRM_IOCTL_GEM_OPEN, &o);
if (ret) {
fprintf(stderr, "Failed to open bo %d: %s\n",
name, strerror(errno));
free(bo);
return NULL;
}
pipe_reference_init(&bo->reference, 1);
bo->screen = screen;
bo->handle = o.handle;
bo->size = o.size;
#ifdef USE_VC4_SIMULATOR
vc4_bo_map(bo);
bo->simulator_winsys_map = bo->map;
bo->simulator_winsys_stride = winsys_stride;
bo->map = malloc(bo->size);
#endif
return bo;
}
struct vc4_bo *
vc4_bo_alloc_mem(struct vc4_screen *screen, const void *data, uint32_t size,
const char *name)
{
void *map;
struct vc4_bo *bo;
bo = vc4_bo_alloc(screen, size, name);
map = vc4_bo_map(bo);
memcpy(map, data, size);
return bo;
}
bool
vc4_bo_flink(struct vc4_bo *bo, uint32_t *name)
{
#ifndef USE_VC4_SIMULATOR
struct drm_gem_flink flink = {
.handle = bo->handle,
};
int ret = drmIoctl(bo->screen->fd, DRM_IOCTL_GEM_FLINK, &flink);
if (ret) {
fprintf(stderr, "Failed to flink bo %d: %s\n",
bo->handle, strerror(errno));
free(bo);
return false;
}
*name = flink.name;
#endif /* USE_VC4_SIMULATOR */
return true;
}
void *
vc4_bo_map(struct vc4_bo *bo)
{
int ret;
if (bo->map)
return bo->map;
struct drm_mode_map_dumb map;
memset(&map, 0, sizeof(map));
map.handle = bo->handle;
ret = drmIoctl(bo->screen->fd, DRM_IOCTL_MODE_MAP_DUMB, &map);
if (ret != 0)
errx(1, "map ioctl");
bo->map = mmap(NULL, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED,
bo->screen->fd, map.offset);
if (bo->map == MAP_FAILED) {
errx(1, "mmap of bo %d (offset 0x%016llx, size %d) failed\n",
bo->handle, (long long)map.offset, bo->size);
}
return bo->map;
}
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