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/*
* Copyright 2000-2001 VA Linux Systems, Inc.
* 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
* on 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
* VA LINUX SYSTEMS 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.
*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
* Gareth Hughes <gareth@valinux.com>
*/
/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgaioctl.h,v 1.11 2002/10/30 12:51:36 alanh Exp $ */
#ifndef MGA_IOCTL_H
#define MGA_IOCTL_H
#include "mgacontext.h"
#include "mga_xmesa.h"
void mgaCopyBuffer( __DRIdrawablePrivate *dPriv );
void mgaWaitForVBlank( mgaContextPtr mmesa );
void mgaGetILoadBufferLocked( mgaContextPtr mmesa );
void mgaFireILoadLocked( mgaContextPtr mmesa,
GLuint offset, GLuint length );
void mgaWaitAgeLocked( mgaContextPtr mmesa, int age );
void mgaFlushVertices( mgaContextPtr mmesa );
void mgaFlushVerticesLocked( mgaContextPtr mmesa );
int mgaFlushDMA( int fd, drmLockFlags flags );
void mgaInitIoctlFuncs( struct dd_function_table *functions );
#define FLUSH_BATCH(mmesa) do { \
if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL) \
fprintf(stderr, "FLUSH_BATCH in %s\n", __FUNCTION__); \
if (mmesa->vertex_dma_buffer) mgaFlushVertices(mmesa); \
} while (0)
#define MGA_STATECHANGE(mmesa, flag) do { \
FLUSH_BATCH(mmesa); \
mmesa->dirty |= flag; \
} while (0)
extern drmBufPtr mga_get_buffer_ioctl( mgaContextPtr mmesa );
static __inline
GLuint *mgaAllocDmaLow( mgaContextPtr mmesa, int bytes )
{
GLuint *head;
/* If there is no DMA buffer currently allocated or the currently
* allocated DMA buffer doesn't have enough room left for this request,
* a new buffer will need to be allocated.
*/
if ( (mmesa->vertex_dma_buffer == NULL)
|| ((mmesa->vertex_dma_buffer->used + bytes)
> mmesa->vertex_dma_buffer->total) ) {
LOCK_HARDWARE( mmesa );
/* In the case where the existing buffer does not have enough room,
* we need to flush it out to the hardware.
*/
if ( mmesa->vertex_dma_buffer != NULL ) {
mgaFlushVerticesLocked( mmesa );
}
mmesa->vertex_dma_buffer = mga_get_buffer_ioctl( mmesa );
UNLOCK_HARDWARE( mmesa );
}
head = (GLuint *)((char *)mmesa->vertex_dma_buffer->address +
mmesa->vertex_dma_buffer->used);
mmesa->vertex_dma_buffer->used += bytes;
return head;
}
#define UPDATE_LOCK( mmesa, flags ) \
do { \
GLint ret = mgaFlushDMA( mmesa->driFd, flags ); \
if ( ret < 0 ) { \
drmCommandNone( mmesa->driFd, DRM_MGA_RESET ); \
UNLOCK_HARDWARE( mmesa ); \
fprintf( stderr, "%s: flush return = %s (%d), flags = 0x%08x\n", \
__FUNCTION__, strerror( -ret ), -ret, \
(unsigned)(flags) ); \
exit( 1 ); \
} \
} while (0)
#endif
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