/**************************************************************************
*
+ * Copyright © 2007 Intel Corporation
* Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
* All Rights Reserved.
*
/*
* Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
* Keith Whitwell <keithw-at-tungstengraphics-dot-com>
+ * Eric Anholt <eric@anholt.net>
*/
#ifndef _DRI_BUFMGR_H_
#define _DRI_BUFMGR_H_
#include <xf86drm.h>
+typedef struct _dri_bufmgr dri_bufmgr;
+typedef struct _dri_bo dri_bo;
+typedef struct _dri_fence dri_fence;
-struct _DriFenceObject;
-struct _DriBufferObject;
-struct _DriBufferPool;
+struct _dri_bo {
+ /** Size in bytes of the buffer object. */
+ unsigned long size;
+ /**
+ * Card virtual address (offset from the beginning of the aperture) for the
+ * object. Only valid while validated.
+ */
+ unsigned long offset;
+ /**
+ * Virtual address for accessing the buffer data. Only valid while mapped.
+ */
+ void *virtual;
+ /** Buffer manager context associated with this buffer object */
+ dri_bufmgr *bufmgr;
+};
-extern struct _DriFenceObject *driFenceBuffers(int fd, char *name,
- unsigned flags);
+struct _dri_fence {
+ /**
+ * This is an ORed mask of DRM_BO_FLAG_READ, DRM_BO_FLAG_WRITE, and
+ * DRM_FLAG_EXE indicating the operations associated with this fence.
+ *
+ * It is constant for the life of the fence object.
+ */
+ unsigned int type;
+ /** Buffer manager context associated with this fence */
+ dri_bufmgr *bufmgr;
+};
-extern struct _DriFenceObject *driFenceReference(struct _DriFenceObject *fence);
+/**
+ * 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.
+ *
+ * XXX: flags/hint reason to live?
+ */
+ dri_bo *(*bo_alloc)(dri_bufmgr *bufmgr_ctx, const char *name,
+ unsigned long size, unsigned int alignment,
+ unsigned int flags, unsigned int hint);
-extern void driFenceUnReference(struct _DriFenceObject *fence);
+ /**
+ * Allocates a buffer object for a static allocation.
+ *
+ * Static allocations are ones such as the front buffer that are offered by
+ * the X Server, which are never evicted and never moved.
+ *
+ * XXX: flags/hint reason to live?
+ */
+ dri_bo *(*bo_alloc_static)(dri_bufmgr *bufmgr_ctx, const char *name,
+ unsigned long offset, unsigned long size,
+ void *virtual, unsigned int flags,
+ unsigned int hint);
-extern void
-driFenceFinish(struct _DriFenceObject *fence, unsigned type, int lazy);
+ /** Takes a reference on a buffer object */
+ void (*bo_reference)(dri_bo *bo);
-extern int driFenceSignaled(struct _DriFenceObject *fence, unsigned type);
-extern unsigned driFenceType(struct _DriFenceObject *fence);
+ /**
+ * Releases a reference on a buffer object, freeing the data if
+ * rerefences remain.
+ */
+ void (*bo_unreference)(dri_bo *bo);
-/*
- * Return a pointer to the libdrm buffer object this DriBufferObject
- * uses.
- */
+ /**
+ * Maps the buffer into userspace.
+ *
+ * This function will block waiting for any existing fence on the buffer to
+ * clear, first. The resulting mapping is available at buf->virtual.
+\ */
+ int (*bo_map)(dri_bo *buf, GLboolean write_enable);
+
+ /** Reduces the refcount on the userspace mapping of the buffer object. */
+ int (*bo_unmap)(dri_bo *buf);
+
+ /**
+ * Makes the buffer accessible to the graphics chip.
+ *
+ * The resulting offset of the buffer within the graphics aperture is then
+ * available at buf->offset until the buffer is fenced.
+ *
+ * Flags should consist of the memory types that the buffer may be validated
+ * into and the read/write/exe flags appropriate to the use of the buffer.
+ */
+ int (*bo_validate)(dri_bo *buf, unsigned int flags);
+
+ /**
+ * Associates the current set of validated buffers with a fence.
+ *
+ * Once fenced, the buffer manager will allow the validated buffers to be
+ * evicted when the graphics device's execution has passed the fence
+ * command.
+ *
+ * The fence object will have flags for the sum of the read/write/exe flags
+ * of the validated buffers associated with it.
+ */
+ dri_fence * (*fence_validated)(dri_bufmgr *bufmgr, const char *name,
+ GLboolean flushed);
+
+ /** Takes a reference on a fence object */
+ void (*fence_reference)(dri_fence *fence);
-extern drmBO *driBOKernel(struct _DriBufferObject *buf);
-extern void *driBOMap(struct _DriBufferObject *buf, unsigned flags,
- unsigned hint);
-extern void driBOUnmap(struct _DriBufferObject *buf);
-extern unsigned long driBOOffset(struct _DriBufferObject *buf);
-extern unsigned driBOFlags(struct _DriBufferObject *buf);
-extern struct _DriBufferObject *driBOReference(struct _DriBufferObject *buf);
-extern void driBOUnReference(struct _DriBufferObject *buf);
+ /**
+ * Releases a reference on a fence object, freeing the data if
+ * rerefences remain.
+ */
+ void (*fence_unreference)(dri_fence *fence);
+
+ /**
+ * Blocks until the given fence is signaled.
+ */
+ void (*fence_wait)(dri_fence *fence);
+
+ /**
+ * Checks and returns whether the given fence is signaled.
+ */
+};
+
+/*
extern void driBOData(struct _DriBufferObject *r_buf,
unsigned size, const void *data, unsigned flags);
extern void driBOSubData(struct _DriBufferObject *buf,
extern void driBOGetSubData(struct _DriBufferObject *buf,
unsigned long offset, unsigned long size,
void *data);
-extern void driGenBuffers(struct _DriBufferPool *pool,
- const char *name,
- unsigned n,
- struct _DriBufferObject *buffers[],
- unsigned alignment, unsigned flags, unsigned hint);
-extern void driDeleteBuffers(unsigned n, struct _DriBufferObject *buffers[]);
-extern void driInitBufMgr(int fd);
-extern void driBOCreateList(int target, drmBOList * list);
-extern void driBOResetList(drmBOList * list);
-extern void driBOAddListItem(drmBOList * list, struct _DriBufferObject *buf,
- unsigned flags, unsigned mask);
-extern void driBOValidateList(int fd, drmBOList * list);
-
-extern void driBOFence(struct _DriBufferObject *buf,
- struct _DriFenceObject *fence);
-
-extern void driPoolTakeDown(struct _DriBufferPool *pool);
-extern void driBOSetStatic(struct _DriBufferObject *buf,
- unsigned long offset,
- unsigned long size, void *virtual, unsigned flags);
-extern void driBOWaitIdle(struct _DriBufferObject *buf, int lazy);
-extern void driPoolTakeDown(struct _DriBufferPool *pool);
+*/
+
+dri_bo *dri_bo_alloc(dri_bufmgr *bufmgr, const char *name, unsigned long size,
+ unsigned int alignment, unsigned int flags,
+ unsigned int hint);
+dri_bo *dri_bo_alloc_static(dri_bufmgr *bufmgr, const char *name,
+ unsigned long offset, unsigned long size,
+ void *virtual, unsigned int flags,
+ unsigned int hint);
+void dri_bo_reference(dri_bo *bo);
+void dri_bo_unreference(dri_bo *bo);
+int dri_bo_map(dri_bo *buf, GLboolean write_enable);
+int dri_bo_unmap(dri_bo *buf);
+int dri_bo_validate(dri_bo *buf, unsigned int flags);
+dri_fence *dri_fence_validated(dri_bufmgr *bufmgr, const char *name,
+ GLboolean flushed);
+void dri_fence_reference(dri_fence *fence);
+void dri_fence_unreference(dri_fence *fence);
+
+void dri_bo_subdata(dri_bo *bo, unsigned long offset,
+ unsigned long size, const void *data);
+void dri_bo_get_subdata(dri_bo *bo, unsigned long offset,
+ unsigned long size, void *data);
+
+dri_bufmgr *dri_bufmgr_ttm_init(int fd, unsigned int fence_type,
+ unsigned int fence_type_flush);
+
+void dri_bufmgr_fake_contended_lock_take(dri_bufmgr *bufmgr);
+dri_bufmgr *dri_bufmgr_fake_init(unsigned long low_offset, void *low_virtual,
+ unsigned long size,
+ unsigned int (*fence_emit)(void *private),
+ int (*fence_wait)(void *private,
+ unsigned int cookie),
+ void *driver_priv);
+void dri_bufmgr_fake_contended_lock_take(dri_bufmgr *bufmgr);
#endif
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