diff options
Diffstat (limited to 'src/mgaioctl.h')
| -rw-r--r-- | src/mgaioctl.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/mgaioctl.h b/src/mgaioctl.h new file mode 100644 index 0000000..f3ae749 --- /dev/null +++ b/src/mgaioctl.h @@ -0,0 +1,111 @@ +/* + * 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( const __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 |