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/**************************************************************************
*
* Copyright © 2009 Jakob Bornecrantz
*
* 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.
*
**************************************************************************/
#ifndef I915_WINSYS_H
#define I915_WINSYS_H
#include "pipe/p_compiler.h"
struct i915_winsys;
struct i915_winsys_buffer;
struct i915_winsys_batchbuffer;
struct pipe_resource;
struct pipe_fence_handle;
struct winsys_handle;
enum i915_winsys_buffer_usage
{
/* use on textures */
I915_USAGE_RENDER = 0x01,
I915_USAGE_SAMPLER = 0x02,
I915_USAGE_2D_TARGET = 0x04,
I915_USAGE_2D_SOURCE = 0x08,
/* use on vertex */
I915_USAGE_VERTEX = 0x10
};
enum i915_winsys_buffer_type
{
I915_NEW_TEXTURE,
I915_NEW_SCANOUT, /**< a texture used for scanning out from */
I915_NEW_VERTEX
};
/* These need to be in sync with the definitions of libdrm-intel! */
enum i915_winsys_buffer_tile
{
I915_TILE_NONE,
I915_TILE_X,
I915_TILE_Y
};
struct i915_winsys_batchbuffer {
struct i915_winsys *iws;
/**
* Values exported to speed up the writing the batchbuffer,
* instead of having to go trough a accesor function for
* each dword written.
*/
/*{@*/
uint8_t *map;
uint8_t *ptr;
size_t size;
size_t relocs;
size_t max_relocs;
/*@}*/
};
struct i915_winsys {
unsigned pci_id; /**< PCI ID for the device */
/**
* Batchbuffer functions.
*/
/*@{*/
/**
* Create a new batchbuffer.
*/
struct i915_winsys_batchbuffer *
(*batchbuffer_create)(struct i915_winsys *iws);
/**
* Validate buffers for usage in this batchbuffer.
* Does space-checking and asorted other book-keeping.
*
* @batch
* @buffers array to buffers to validate
* @num_of_buffers size of the passed array
*/
boolean (*validate_buffers)(struct i915_winsys_batchbuffer *batch,
struct i915_winsys_buffer **buffers,
int num_of_buffers);
/**
* Emit a relocation to a buffer.
* Target position in batchbuffer is the same as ptr.
*
* @batch
* @reloc buffer address to be inserted into target.
* @usage how is the hardware going to use the buffer.
* @offset add this to the reloc buffers address
* @target buffer where to write the address, null for batchbuffer.
* @fenced relocation needs a fence.
*/
int (*batchbuffer_reloc)(struct i915_winsys_batchbuffer *batch,
struct i915_winsys_buffer *reloc,
enum i915_winsys_buffer_usage usage,
unsigned offset, boolean fenced);
/**
* Flush a bufferbatch.
*/
void (*batchbuffer_flush)(struct i915_winsys_batchbuffer *batch,
struct pipe_fence_handle **fence);
/**
* Destroy a batchbuffer.
*/
void (*batchbuffer_destroy)(struct i915_winsys_batchbuffer *batch);
/*@}*/
/**
* Buffer functions.
*/
/*@{*/
/**
* Create a buffer.
*/
struct i915_winsys_buffer *
(*buffer_create)(struct i915_winsys *iws,
unsigned size,
enum i915_winsys_buffer_type type);
/**
* Create a tiled buffer.
*
* *stride, height are in bytes. The winsys tries to allocate the buffer with
* the tiling mode provide in *tiling. If tiling is no possible, *tiling will
* be set to I915_TILE_NONE. The calculated stride (incorporateing hw/kernel
* requirements) is always returned in *stride.
*/
struct i915_winsys_buffer *
(*buffer_create_tiled)(struct i915_winsys *iws,
unsigned *stride, unsigned height,
enum i915_winsys_buffer_tile *tiling,
enum i915_winsys_buffer_type type);
/**
* Creates a buffer from a handle.
* Used to implement pipe_screen::resource_from_handle.
* Also provides the stride information needed for the
* texture via the stride argument.
*/
struct i915_winsys_buffer *
(*buffer_from_handle)(struct i915_winsys *iws,
struct winsys_handle *whandle,
enum i915_winsys_buffer_tile *tiling,
unsigned *stride);
/**
* Used to implement pipe_screen::resource_get_handle.
* The winsys might need the stride information.
*/
boolean (*buffer_get_handle)(struct i915_winsys *iws,
struct i915_winsys_buffer *buffer,
struct winsys_handle *whandle,
unsigned stride);
/**
* Map a buffer.
*/
void *(*buffer_map)(struct i915_winsys *iws,
struct i915_winsys_buffer *buffer,
boolean write);
/**
* Unmap a buffer.
*/
void (*buffer_unmap)(struct i915_winsys *iws,
struct i915_winsys_buffer *buffer);
/**
* Write to a buffer.
*
* Arguments follows pipe_buffer_write.
*/
int (*buffer_write)(struct i915_winsys *iws,
struct i915_winsys_buffer *dst,
size_t offset,
size_t size,
const void *data);
void (*buffer_destroy)(struct i915_winsys *iws,
struct i915_winsys_buffer *buffer);
/*@}*/
/**
* Fence functions.
*/
/*@{*/
/**
* Reference fence and set ptr to fence.
*/
void (*fence_reference)(struct i915_winsys *iws,
struct pipe_fence_handle **ptr,
struct pipe_fence_handle *fence);
/**
* Check if a fence has finished.
*/
int (*fence_signalled)(struct i915_winsys *iws,
struct pipe_fence_handle *fence);
/**
* Wait on a fence to finish.
*/
int (*fence_finish)(struct i915_winsys *iws,
struct pipe_fence_handle *fence);
/*@}*/
/**
* Destroy the winsys.
*/
void (*destroy)(struct i915_winsys *iws);
};
#endif
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