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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>
+ *
+ */
+
+/**
+ * @file intel_bufmgr_priv.h
+ *
+ * Private definitions of Intel-specific bufmgr functions and structures.
+ */
+
+#ifndef INTEL_BUFMGR_PRIV_H
+#define INTEL_BUFMGR_PRIV_H
+
+/**
+ * Context for a buffer manager instance.
+ *
+ * Contains public methods followed by private storage for the buffer manager.
+ */
+struct _dri_bufmgr {
+ /**
+ * Allocate a buffer object.
+ *
+ * Buffer objects are not necessarily initially mapped into CPU virtual
+ * address space or graphics device aperture. They must be mapped using
+ * bo_map() to be used by the CPU, and validated for use using bo_validate()
+ * to be used from the graphics device.
+ */
+ dri_bo *(*bo_alloc)(dri_bufmgr *bufmgr_ctx, const char *name,
+ unsigned long size, unsigned int alignment);
+
+ /** Takes a reference on a buffer object */
+ void (*bo_reference)(dri_bo *bo);
+
+ /**
+ * Releases a reference on a buffer object, freeing the data if
+ * rerefences remain.
+ */
+ void (*bo_unreference)(dri_bo *bo);
+
+ /**
+ * Maps the buffer into userspace.
+ *
+ * This function will block waiting for any existing execution on the
+ * buffer to complete, first. The resulting mapping is available at
+ * buf->virtual.
+ */
+ int (*bo_map)(dri_bo *buf, int write_enable);
+
+ /** Reduces the refcount on the userspace mapping of the buffer object. */
+ int (*bo_unmap)(dri_bo *buf);
+
+ /**
+ * Write data into an object.
+ *
+ * This is an optional function, if missing,
+ * dri_bo will map/memcpy/unmap.
+ */
+ int (*bo_subdata) (dri_bo *buf, unsigned long offset,
+ unsigned long size, const void *data);
+
+ /**
+ * Read data from an object
+ *
+ * This is an optional function, if missing,
+ * dri_bo will map/memcpy/unmap.
+ */
+ int (*bo_get_subdata) (dri_bo *bo, unsigned long offset,
+ unsigned long size, void *data);
+
+ /**
+ * Waits for rendering to an object by the GPU to have completed.
+ *
+ * This is not required for any access to the BO by bo_map, bo_subdata, etc.
+ * It is merely a way for the driver to implement glFinish.
+ */
+ void (*bo_wait_rendering) (dri_bo *bo);
+
+ /**
+ * Tears down the buffer manager instance.
+ */
+ void (*destroy)(dri_bufmgr *bufmgr);
+
+ /**
+ * Add relocation entry in reloc_buf, which will be updated with the
+ * target buffer's real offset on on command submission.
+ *
+ * Relocations remain in place for the lifetime of the buffer object.
+ *
+ * \param reloc_buf Buffer to write the relocation into.
+ * \param read_domains GEM read domains which the buffer will be read into
+ * by the command that this relocation is part of.
+ * \param write_domains GEM read domains which the buffer will be dirtied
+ * in by the command that this relocation is part of.
+ * \param delta Constant value to be added to the relocation target's
+ * offset.
+ * \param offset Byte offset within batch_buf of the relocated pointer.
+ * \param target Buffer whose offset should be written into the relocation
+ * entry.
+ */
+ int (*bo_emit_reloc)(dri_bo *reloc_buf,
+ uint32_t read_domains, uint32_t write_domain,
+ uint32_t delta, uint32_t offset, dri_bo *target);
+
+ /** Executes the command buffer pointed to by bo. */
+ int (*bo_exec)(dri_bo *bo, int used,
+ drm_clip_rect_t *cliprects, int num_cliprects,
+ int DR4);
+
+ /**
+ * Pin a buffer to the aperture and fix the offset until unpinned
+ *
+ * \param buf Buffer to pin
+ * \param alignment Required alignment for aperture, in bytes
+ */
+ int (*bo_pin) (dri_bo *buf, uint32_t alignment);
+ /**
+ * Unpin a buffer from the aperture, allowing it to be removed
+ *
+ * \param buf Buffer to unpin
+ */
+ int (*bo_unpin) (dri_bo *buf);
+ /**
+ * Ask that the buffer be placed in tiling mode
+ *
+ * \param buf Buffer to set tiling mode for
+ * \param tiling_mode desired, and returned tiling mode
+ */
+ int (*bo_set_tiling) (dri_bo *bo, uint32_t *tiling_mode);
+ /**
+ * Create a visible name for a buffer which can be used by other apps
+ *
+ * \param buf Buffer to create a name for
+ * \param name Returned name
+ */
+ int (*bo_flink) (dri_bo *buf, uint32_t *name);
+
+ int (*check_aperture_space)(dri_bo **bo_array, int count);
+ int debug; /**< Enables verbose debugging printouts */
+};
+
+#endif /* INTEL_BUFMGR_PRIV_H */
+