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-rw-r--r--linux-core/i915_gem.c140
1 files changed, 140 insertions, 0 deletions
diff --git a/linux-core/i915_gem.c b/linux-core/i915_gem.c
new file mode 100644
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+++ b/linux-core/i915_gem.c
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+/*
+ * Copyright © 2008 Intel Corporation
+ *
+ * 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, sublicense,
+ * 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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ *
+ * Authors:
+ * Eric Anholt <eric@anholt.net>
+ *
+ */
+
+#include "drmP.h"
+#include "drm.h"
+#include "i915_drm.h"
+#include "i915_drv.h"
+
+int
+i915_gem_init_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct drm_i915_gem_init *args = data;
+
+ if (args->gtt_start >= args->gtt_end ||
+ (args->gtt_start & (PAGE_SIZE - 1)) != 0 ||
+ (args->gtt_end & (PAGE_SIZE - 1)) != 0)
+ return -EINVAL;
+
+ drm_memrange_init(&dev_priv->mm.gtt_space, args->gtt_start,
+ args->gtt_end);
+
+ return 0;
+}
+
+static void
+i915_gem_evict_object(struct drm_device *dev, struct drm_gem_object *obj)
+{
+
+}
+
+static int
+evict_callback(struct drm_memrange_node *node, void *data)
+{
+ struct drm_device *dev = data;
+ struct drm_gem_object *obj = node->private;
+ struct drm_i915_gem_object *obj_priv = obj->driver_private;
+
+ if (obj_priv->pin_count == 0)
+ i915_gem_evict_object(dev, obj);
+
+ return 0;
+}
+
+int
+i915_gem_execbuffer(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct drm_i915_gem_execbuffer *args = data;
+ struct drm_i915_gem_validate_entry *validate_list;
+ int ret, i;
+ RING_LOCALS;
+
+ LOCK_TEST_WITH_RETURN(dev, file_priv);
+
+ /* Big hammer: flush and idle the hardware so we can map things in/out.
+ */
+ BEGIN_LP_RING(2);
+ OUT_RING(CMD_MI_FLUSH | MI_READ_FLUSH | MI_EXE_FLUSH);
+ OUT_RING(0); /* noop */
+ ADVANCE_LP_RING();
+ ret = i915_quiescent(dev);
+ if (ret != 0)
+ return ret;
+
+ /* Evict everything so we have space for sure. */
+ drm_memrange_for_each(&dev_priv->mm.gtt_space, evict_callback);
+
+ /* Copy in the validate list from userland */
+ validate_list = drm_calloc(sizeof(*validate_list), args->buffer_count,
+ DRM_MEM_DRIVER);
+ ret = copy_from_user(validate_list,
+ (struct drm_i915_relocation_entry __user*)
+ args->buffers,
+ sizeof(*validate_list) * args->buffer_count);
+ if (ret != 0) {
+ drm_free(validate_list,
+ sizeof(*validate_list) * args->buffer_count,
+ DRM_MEM_DRIVER);
+ return ret;
+ }
+
+ /* Perform the relocations */
+ for (i = 0; i < args->buffer_count; i++) {
+ intel_gem_reloc_and_validate_buffer(dev, &validate_list[i]);
+ }
+
+ /* Exec the batchbuffer */
+
+
+ drm_free(validate_list, sizeof(*validate_list) * args->buffer_count,
+ DRM_MEM_DRIVER);
+
+ return 0;
+}
+
+int i915_gem_init_object(struct drm_device *dev, struct drm_gem_object *obj)
+{
+ struct drm_i915_gem_object *obj_priv;
+
+ obj_priv = drm_calloc(1, sizeof(*obj_priv), DRM_MEM_DRIVER);
+ if (obj_priv == NULL)
+ return -ENOMEM;
+
+ obj->driver_private = obj_priv;
+
+ return 0;
+}
+
+void i915_gem_free_object(struct drm_device *dev, struct drm_gem_object *obj)
+{
+ drm_free(obj->driver_private, 1, DRM_MEM_DRIVER);
+}
+