--- /dev/null
+/**************************************************************************
+ *
+ * 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 handle;
+ unsigned map_count;
+ int mapped;
+};
+
+static int
+intel_get_prop(struct kms_driver *kms, unsigned key, unsigned *out)
+{
+ switch (key) {
+ case KMS_MAX_SCANOUT_WIDTH:
+ *out = 4096;
+ break;
+ case KMS_MAX_SCANOUT_HEIGHT:
+ *out = 4096;
+ break;
+ case KMS_MIN_SCANOUT_WIDTH:
+ *out = 1;
+ break;
+ case KMS_MIN_SCANOUT_HEIGHT:
+ *out = 1;
+ break;
+ case KMS_MAX_CURSOR_WIDTH:
+ *out = 64;
+ break;
+ case KMS_MAX_CURSOR_HEIGHT:
+ *out = 64;
+ break;
+ case KMS_MIN_CURSOR_WIDTH:
+ *out = 64;
+ break;
+ case KMS_MIN_CURSOR_HEIGHT:
+ *out = 64;
+ 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) {
+ pitch = 64 * 4;
+ size = 64 * 64 * 4;
+ } else if (type == KMS_BO_TYPE_SCANOUT) {
+ 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 && 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 (ret != 0)
+ goto err_destroy;
+ }
+
+ return 0;
+
+err_destroy:
+ kms_bo_destroy(out);
+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)
+ munmap(bo->base.ptr, bo->base.size);
+
+ 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;
+}
projects / platform / upstream / libdrm.git / commitdiff