cfb8876755
Some eagle-eyed observers have commented that we lose some potentially useful information for the (*bo_map) callback when we convert our map flags to page protection flags. Let's not lose this information, so pass in the map flags. We can convert to page protection flags using a helper function. BUG=chromium:764871 TEST=Boot Android and play games on Eve Change-Id: Ie2cf395109eb5a8de663dfb97a343d20ff0df30c Reviewed-on: https://chromium-review.googlesource.com/691425 Commit-Ready: Gurchetan Singh <gurchetansingh@chromium.org> Tested-by: Gurchetan Singh <gurchetansingh@chromium.org> Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
/*
|
|
* Copyright 2017 The Chromium OS Authors. All rights reserved.
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#ifdef DRV_VC4
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/mman.h>
|
|
#include <vc4_drm.h>
|
|
#include <xf86drm.h>
|
|
|
|
#include "drv_priv.h"
|
|
#include "helpers.h"
|
|
#include "util.h"
|
|
|
|
static const uint32_t render_target_formats[] = { DRM_FORMAT_ARGB8888, DRM_FORMAT_RGB565,
|
|
DRM_FORMAT_XRGB8888 };
|
|
|
|
static int vc4_init(struct driver *drv)
|
|
{
|
|
int ret;
|
|
ret = drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
|
|
&LINEAR_METADATA, BO_USE_RENDER_MASK);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return drv_modify_linear_combinations(drv);
|
|
}
|
|
|
|
static int vc4_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
|
|
uint64_t use_flags)
|
|
{
|
|
int ret;
|
|
size_t plane;
|
|
uint32_t stride;
|
|
struct drm_vc4_create_bo bo_create;
|
|
|
|
/*
|
|
* Since the ARM L1 cache line size is 64 bytes, align to that as a
|
|
* performance optimization.
|
|
*/
|
|
stride = drv_stride_from_format(format, width, 0);
|
|
stride = ALIGN(stride, 64);
|
|
drv_bo_from_format(bo, stride, height, format);
|
|
|
|
memset(&bo_create, 0, sizeof(bo_create));
|
|
bo_create.size = bo->total_size;
|
|
|
|
ret = drmIoctl(bo->drv->fd, DRM_IOCTL_VC4_CREATE_BO, &bo_create);
|
|
if (ret) {
|
|
fprintf(stderr, "drv: DRM_IOCTL_VC4_GEM_CREATE failed (size=%zu)\n",
|
|
bo->total_size);
|
|
return ret;
|
|
}
|
|
|
|
for (plane = 0; plane < bo->num_planes; plane++)
|
|
bo->handles[plane].u32 = bo_create.handle;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void *vc4_bo_map(struct bo *bo, struct map_info *data, size_t plane, uint32_t map_flags)
|
|
{
|
|
int ret;
|
|
struct drm_vc4_mmap_bo bo_map;
|
|
|
|
memset(&bo_map, 0, sizeof(bo_map));
|
|
bo_map.handle = bo->handles[0].u32;
|
|
|
|
ret = drmCommandWriteRead(bo->drv->fd, DRM_VC4_MMAP_BO, &bo_map, sizeof(bo_map));
|
|
if (ret) {
|
|
fprintf(stderr, "drv: DRM_VC4_MMAP_BO failed\n");
|
|
return MAP_FAILED;
|
|
}
|
|
|
|
data->length = bo->total_size;
|
|
return mmap(0, bo->total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
|
|
bo_map.offset);
|
|
}
|
|
|
|
struct backend backend_vc4 = {
|
|
.name = "vc4",
|
|
.init = vc4_init,
|
|
.bo_create = vc4_bo_create,
|
|
.bo_import = drv_prime_bo_import,
|
|
.bo_destroy = drv_gem_bo_destroy,
|
|
.bo_map = vc4_bo_map,
|
|
.bo_unmap = drv_bo_munmap,
|
|
};
|
|
|
|
#endif
|