139 lines
3.2 KiB
C
139 lines
3.2 KiB
C
/*
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* Copyright © 2007 Red Hat, Inc.
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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 FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Authors:
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* Dave Airlie <airlied@redhat.com>
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*
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include "dix-config.h"
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#endif
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#include "dumb_bo.h"
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include <unistd.h>
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#include <xf86drm.h>
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struct dumb_bo *
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dumb_bo_create(int fd,
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const unsigned width, const unsigned height, const unsigned bpp)
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{
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struct drm_mode_create_dumb arg;
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struct dumb_bo *bo;
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int ret;
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bo = calloc(1, sizeof(*bo));
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if (!bo)
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return NULL;
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memset(&arg, 0, sizeof(arg));
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arg.width = width;
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arg.height = height;
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arg.bpp = bpp;
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ret = drmIoctl(fd, DRM_IOCTL_MODE_CREATE_DUMB, &arg);
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if (ret)
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goto err_free;
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bo->handle = arg.handle;
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bo->size = arg.size;
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bo->pitch = arg.pitch;
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return bo;
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err_free:
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free(bo);
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return NULL;
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}
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int
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dumb_bo_map(int fd, struct dumb_bo *bo)
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{
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struct drm_mode_map_dumb arg;
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int ret;
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void *map;
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if (bo->ptr) {
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return 0;
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}
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memset(&arg, 0, sizeof(arg));
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arg.handle = bo->handle;
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ret = drmIoctl(fd, DRM_IOCTL_MODE_MAP_DUMB, &arg);
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if (ret)
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return ret;
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map = mmap(0, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, arg.offset);
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if (map == MAP_FAILED)
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return -errno;
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bo->ptr = map;
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return 0;
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}
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int
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dumb_bo_destroy(int fd, struct dumb_bo *bo)
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{
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struct drm_mode_destroy_dumb arg;
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int ret;
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if (bo->ptr) {
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munmap(bo->ptr, bo->size);
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bo->ptr = NULL;
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}
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memset(&arg, 0, sizeof(arg));
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arg.handle = bo->handle;
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ret = drmIoctl(fd, DRM_IOCTL_MODE_DESTROY_DUMB, &arg);
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if (ret)
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return -errno;
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free(bo);
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return 0;
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}
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struct dumb_bo *
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dumb_get_bo_from_fd(int fd, int handle, int pitch, int size)
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{
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struct dumb_bo *bo;
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int ret;
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bo = calloc(1, sizeof(*bo));
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if (!bo)
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return NULL;
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ret = drmPrimeFDToHandle(fd, handle, &bo->handle);
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if (ret) {
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free(bo);
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return NULL;
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}
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bo->pitch = pitch;
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bo->size = size;
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return bo;
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}
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