| /* |
| * 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 |
