2014-06-19 08:19:38 +01:00
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/*
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* Copyright © 2014 Broadcom
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include <errno.h>
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#include <err.h>
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#include <sys/mman.h>
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#include <xf86drm.h>
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#include <xf86drmMode.h>
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#include "util/u_memory.h"
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#include "vc4_context.h"
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#include "vc4_screen.h"
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struct vc4_bo *
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vc4_bo_alloc(struct vc4_screen *screen, uint32_t size, const char *name)
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{
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struct vc4_bo *bo = CALLOC_STRUCT(vc4_bo);
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if (!bo)
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return NULL;
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pipe_reference_init(&bo->reference, 1);
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bo->screen = screen;
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bo->size = size;
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bo->name = name;
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struct drm_mode_create_dumb create;
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memset(&create, 0, sizeof(create));
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create.width = 128;
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create.bpp = 8;
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create.height = (size + 127) / 128;
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int ret = drmIoctl(screen->fd, DRM_IOCTL_MODE_CREATE_DUMB, &create);
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if (ret != 0)
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errx(1, "create ioctl");
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bo->handle = create.handle;
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assert(create.size >= size);
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return bo;
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}
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void
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vc4_bo_free(struct vc4_bo *bo)
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{
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struct vc4_screen *screen = bo->screen;
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2014-08-04 21:01:29 +01:00
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if (bo->map) {
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#ifdef USE_VC4_SIMULATOR
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if (bo->simulator_winsys_map) {
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free(bo->map);
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bo->map = bo->simulator_winsys_map;
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}
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#endif
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2014-08-04 21:00:56 +01:00
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munmap(bo->map, bo->size);
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2014-08-04 21:01:29 +01:00
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}
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2014-08-04 21:00:56 +01:00
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2014-06-19 08:19:38 +01:00
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struct drm_gem_close c;
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c.handle = bo->handle;
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int ret = drmIoctl(screen->fd, DRM_IOCTL_GEM_CLOSE, &c);
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if (ret != 0)
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fprintf(stderr, "close object %d: %s\n", bo->handle, strerror(errno));
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free(bo);
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}
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struct vc4_bo *
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vc4_bo_open_name(struct vc4_screen *screen, uint32_t name,
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uint32_t winsys_stride)
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{
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struct vc4_bo *bo = CALLOC_STRUCT(vc4_bo);
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struct drm_gem_open o;
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o.name = name;
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int ret = drmIoctl(screen->fd, DRM_IOCTL_GEM_OPEN, &o);
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if (ret) {
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fprintf(stderr, "Failed to open bo %d: %s\n",
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name, strerror(errno));
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free(bo);
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return NULL;
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}
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pipe_reference_init(&bo->reference, 1);
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bo->screen = screen;
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bo->handle = o.handle;
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bo->size = o.size;
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2014-08-05 00:38:07 +01:00
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bo->name = "winsys";
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2014-06-19 08:19:38 +01:00
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#ifdef USE_VC4_SIMULATOR
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vc4_bo_map(bo);
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bo->simulator_winsys_map = bo->map;
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bo->simulator_winsys_stride = winsys_stride;
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2014-07-18 21:06:01 +01:00
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bo->map = malloc(bo->size);
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2014-06-19 08:19:38 +01:00
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#endif
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return bo;
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}
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struct vc4_bo *
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vc4_bo_alloc_mem(struct vc4_screen *screen, const void *data, uint32_t size,
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const char *name)
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{
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void *map;
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struct vc4_bo *bo;
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bo = vc4_bo_alloc(screen, size, name);
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map = vc4_bo_map(bo);
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memcpy(map, data, size);
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return bo;
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}
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bool
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vc4_bo_flink(struct vc4_bo *bo, uint32_t *name)
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{
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struct drm_gem_flink flink = {
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.handle = bo->handle,
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};
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int ret = drmIoctl(bo->screen->fd, DRM_IOCTL_GEM_FLINK, &flink);
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if (ret) {
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fprintf(stderr, "Failed to flink bo %d: %s\n",
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bo->handle, strerror(errno));
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free(bo);
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return false;
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}
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*name = flink.name;
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return true;
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}
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void *
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vc4_bo_map(struct vc4_bo *bo)
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{
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int ret;
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if (bo->map)
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return bo->map;
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struct drm_mode_map_dumb map;
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memset(&map, 0, sizeof(map));
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map.handle = bo->handle;
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ret = drmIoctl(bo->screen->fd, DRM_IOCTL_MODE_MAP_DUMB, &map);
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if (ret != 0)
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errx(1, "map ioctl");
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bo->map = mmap(NULL, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED,
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bo->screen->fd, map.offset);
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if (bo->map == MAP_FAILED) {
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errx(1, "mmap of bo %d (offset 0x%016llx, size %d) failed\n",
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bo->handle, (long long)map.offset, bo->size);
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}
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return bo->map;
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}
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