diff options
Diffstat (limited to 'lib/libdrm/libkms/intel.c')
| -rw-r--r-- | lib/libdrm/libkms/intel.c | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/lib/libdrm/libkms/intel.c b/lib/libdrm/libkms/intel.c new file mode 100644 index 000000000..8b8249b18 --- /dev/null +++ b/lib/libdrm/libkms/intel.c @@ -0,0 +1,238 @@ +/************************************************************************** + * + * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA + * All Rights Reserved. + * + * 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, sub license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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. + * + **************************************************************************/ + + +#define HAVE_STDINT_H +#define _FILE_OFFSET_BITS 64 + +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "internal.h" + +#include <sys/mman.h> +#include <sys/ioctl.h> +#include "xf86drm.h" + +#include "i915_drm.h" + +struct intel_bo +{ + struct kms_bo base; + unsigned map_count; +}; + +static int +intel_get_prop(struct kms_driver *kms, unsigned key, unsigned *out) +{ + switch (key) { + case KMS_BO_TYPE: + *out = KMS_BO_TYPE_SCANOUT_X8R8G8B8 | KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8; + break; + default: + return -EINVAL; + } + return 0; +} + +static int +intel_destroy(struct kms_driver *kms) +{ + free(kms); + return 0; +} + +static int +intel_bo_create(struct kms_driver *kms, + const unsigned width, const unsigned height, + const enum kms_bo_type type, const unsigned *attr, + struct kms_bo **out) +{ + struct drm_i915_gem_create arg; + unsigned size, pitch; + struct intel_bo *bo; + int i, ret; + + for (i = 0; attr[i]; i += 2) { + switch (attr[i]) { + case KMS_WIDTH: + case KMS_HEIGHT: + case KMS_BO_TYPE: + break; + default: + return -EINVAL; + } + } + + bo = calloc(1, sizeof(*bo)); + if (!bo) + return -ENOMEM; + + if (type == KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8) { + pitch = 64 * 4; + size = 64 * 64 * 4; + } else if (type == KMS_BO_TYPE_SCANOUT_X8R8G8B8) { + pitch = width * 4; + pitch = (pitch + 512 - 1) & ~(512 - 1); + size = pitch * ((height + 4 - 1) & ~(4 - 1)); + } else { + return -EINVAL; + } + + memset(&arg, 0, sizeof(arg)); + arg.size = size; + + ret = drmCommandWriteRead(kms->fd, DRM_I915_GEM_CREATE, &arg, sizeof(arg)); + if (ret) + goto err_free; + + bo->base.kms = kms; + bo->base.handle = arg.handle; + bo->base.size = size; + bo->base.pitch = pitch; + + *out = &bo->base; + if (type == KMS_BO_TYPE_SCANOUT_X8R8G8B8 && pitch > 512) { + struct drm_i915_gem_set_tiling tile; + + memset(&tile, 0, sizeof(tile)); + tile.handle = bo->base.handle; + tile.tiling_mode = I915_TILING_X; + tile.stride = bo->base.pitch; + + ret = drmCommandWriteRead(kms->fd, DRM_I915_GEM_SET_TILING, &tile, sizeof(tile)); +#if 0 + if (ret) { + kms_bo_destroy(out); + return ret; + } +#endif + } + + return 0; + +err_free: + free(bo); + return ret; +} + +static int +intel_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out) +{ + switch (key) { + default: + return -EINVAL; + } +} + +static int +intel_bo_map(struct kms_bo *_bo, void **out) +{ + struct intel_bo *bo = (struct intel_bo *)_bo; + struct drm_i915_gem_mmap_gtt arg; + void *map = NULL; + int ret; + + if (bo->base.ptr) { + bo->map_count++; + *out = bo->base.ptr; + return 0; + } + + memset(&arg, 0, sizeof(arg)); + arg.handle = bo->base.handle; + + ret = drmCommandWriteRead(bo->base.kms->fd, DRM_I915_GEM_MMAP_GTT, &arg, sizeof(arg)); + if (ret) + return ret; + + map = mmap(0, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, arg.offset); + if (map == MAP_FAILED) + return -errno; + + bo->base.ptr = map; + bo->map_count++; + *out = bo->base.ptr; + + return 0; +} + +static int +intel_bo_unmap(struct kms_bo *_bo) +{ + struct intel_bo *bo = (struct intel_bo *)_bo; + bo->map_count--; + return 0; +} + +static int +intel_bo_destroy(struct kms_bo *_bo) +{ + struct intel_bo *bo = (struct intel_bo *)_bo; + struct drm_gem_close arg; + int ret; + + if (bo->base.ptr) { + /* XXX Sanity check map_count */ + munmap(bo->base.ptr, bo->base.size); + bo->base.ptr = NULL; + } + + memset(&arg, 0, sizeof(arg)); + arg.handle = bo->base.handle; + + ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_GEM_CLOSE, &arg); + if (ret) + return -errno; + + free(bo); + return 0; +} + +int +intel_create(int fd, struct kms_driver **out) +{ + struct kms_driver *kms; + + kms = calloc(1, sizeof(*kms)); + if (!kms) + return -ENOMEM; + + kms->fd = fd; + + kms->bo_create = intel_bo_create; + kms->bo_map = intel_bo_map; + kms->bo_unmap = intel_bo_unmap; + kms->bo_get_prop = intel_bo_get_prop; + kms->bo_destroy = intel_bo_destroy; + kms->get_prop = intel_get_prop; + kms->destroy = intel_destroy; + *out = kms; + + return 0; +} |