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Diffstat (limited to 'src/mesa/drivers/dri/mga/mgaioctl.c')
-rw-r--r--src/mesa/drivers/dri/mga/mgaioctl.c747
1 files changed, 0 insertions, 747 deletions
diff --git a/src/mesa/drivers/dri/mga/mgaioctl.c b/src/mesa/drivers/dri/mga/mgaioctl.c
deleted file mode 100644
index a54d86a178d..00000000000
--- a/src/mesa/drivers/dri/mga/mgaioctl.c
+++ /dev/null
@@ -1,747 +0,0 @@
-/*
- * 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.
- */
-
-/**
- * \file mgaioctl.c
- * MGA IOCTL related wrapper functions.
- *
- * \author Keith Whitwell <[email protected]>
- * \author Gareth Hughes <[email protected]>
- */
-
-#include <errno.h>
-#include "main/mtypes.h"
-#include "main/macros.h"
-#include "main/dd.h"
-#include "swrast/swrast.h"
-
-#include "main/mm.h"
-#include "drm.h"
-#include "mga_drm.h"
-#include "mgacontext.h"
-#include "mgadd.h"
-#include "mgastate.h"
-#include "mgaioctl.h"
-
-#include "vblank.h"
-
-
-static int
-mgaSetFence( mgaContextPtr mmesa, uint32_t * fence )
-{
- int ret = ENOSYS;
-
- if ( mmesa->driScreen->drm_version.minor >= 2 ) {
- ret = drmCommandWriteRead( mmesa->driScreen->fd, DRM_MGA_SET_FENCE,
- fence, sizeof( uint32_t ));
- if (ret) {
- fprintf(stderr, "drmMgaSetFence: %d\n", ret);
- exit(1);
- }
- }
-
- return ret;
-}
-
-
-static int
-mgaWaitFence( mgaContextPtr mmesa, uint32_t fence, uint32_t * curr_fence )
-{
- int ret = ENOSYS;
-
- if ( mmesa->driScreen->drm_version.minor >= 2 ) {
- uint32_t temp = fence;
-
- ret = drmCommandWriteRead( mmesa->driScreen->fd,
- DRM_MGA_WAIT_FENCE,
- & temp, sizeof( uint32_t ));
- if (ret) {
- fprintf(stderr, "drmMgaSetFence: %d\n", ret);
- exit(1);
- }
-
- if ( curr_fence ) {
- *curr_fence = temp;
- }
- }
-
- return ret;
-}
-
-
-static void mga_iload_dma_ioctl(mgaContextPtr mmesa,
- unsigned long dest,
- int length)
-{
- drmBufPtr buf = mmesa->iload_buffer;
- drm_mga_iload_t iload;
- int ret, i;
-
- if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
- fprintf(stderr, "DRM_IOCTL_MGA_ILOAD idx %d dst %x length %d\n",
- buf->idx, (int) dest, length);
-
- if ( (length & MGA_ILOAD_MASK) != 0 ) {
- UNLOCK_HARDWARE( mmesa );
- fprintf( stderr, "%s: Invalid ILOAD datasize (%d), must be "
- "multiple of %u.\n", __FUNCTION__, length, MGA_ILOAD_ALIGN );
- exit( 1 );
- }
-
- iload.idx = buf->idx;
- iload.dstorg = dest;
- iload.length = length;
-
- i = 0;
- do {
- ret = drmCommandWrite( mmesa->driFd, DRM_MGA_ILOAD,
- &iload, sizeof(iload) );
- } while ( ret == -EBUSY && i++ < DRM_MGA_IDLE_RETRY );
-
- if ( ret < 0 ) {
- printf("send iload retcode = %d\n", ret);
- exit(1);
- }
-
- mmesa->iload_buffer = 0;
-
- if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
- fprintf(stderr, "finished iload dma put\n");
-
-}
-
-drmBufPtr mga_get_buffer_ioctl( mgaContextPtr mmesa )
-{
- int idx = 0;
- int size = 0;
- drmDMAReq dma;
- int retcode;
- drmBufPtr buf;
-
- if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
- fprintf(stderr, "Getting dma buffer\n");
-
- dma.context = mmesa->hHWContext;
- dma.send_count = 0;
- dma.send_list = NULL;
- dma.send_sizes = NULL;
- dma.flags = 0;
- dma.request_count = 1;
- dma.request_size = MGA_BUFFER_SIZE;
- dma.request_list = &idx;
- dma.request_sizes = &size;
- dma.granted_count = 0;
-
-
- if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
- fprintf(stderr, "drmDMA (get) ctx %d count %d size 0x%x\n",
- dma.context, dma.request_count,
- dma.request_size);
-
- while (1) {
- retcode = drmDMA(mmesa->driFd, &dma);
-
- if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
- fprintf(stderr, "retcode %d sz %d idx %d count %d\n",
- retcode,
- dma.request_sizes[0],
- dma.request_list[0],
- dma.granted_count);
-
- if (retcode == 0 &&
- dma.request_sizes[0] &&
- dma.granted_count)
- break;
-
- if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
- fprintf(stderr, "\n\nflush");
-
- UPDATE_LOCK( mmesa, DRM_LOCK_FLUSH | DRM_LOCK_QUIESCENT );
- }
-
- buf = &(mmesa->mgaScreen->bufs->list[idx]);
- buf->used = 0;
-
- if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
- fprintf(stderr,
- "drmDMA (get) returns size[0] 0x%x idx[0] %d\n"
- "dma_buffer now: buf idx: %d size: %d used: %d addr %p\n",
- dma.request_sizes[0], dma.request_list[0],
- buf->idx, buf->total,
- buf->used, buf->address);
-
- if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
- fprintf(stderr, "finished getbuffer\n");
-
- return buf;
-}
-
-
-
-
-static void
-mgaClear( struct gl_context *ctx, GLbitfield mask )
-{
- mgaContextPtr mmesa = MGA_CONTEXT(ctx);
- __DRIdrawable *dPriv = mmesa->driDrawable;
- GLuint flags = 0;
- GLuint clear_color = mmesa->ClearColor;
- GLuint clear_depth = 0;
- GLuint color_mask = 0;
- GLuint depth_mask = 0;
- int ret;
- int i;
- static int nrclears;
- drm_mga_clear_t clear;
- GLint cx, cy, cw, ch;
-
- FLUSH_BATCH( mmesa );
-
- if ( mask & BUFFER_BIT_FRONT_LEFT ) {
- flags |= MGA_FRONT;
- color_mask = mmesa->setup.plnwt;
- mask &= ~BUFFER_BIT_FRONT_LEFT;
- }
-
- if ( mask & BUFFER_BIT_BACK_LEFT ) {
- flags |= MGA_BACK;
- color_mask = mmesa->setup.plnwt;
- mask &= ~BUFFER_BIT_BACK_LEFT;
- }
-
- if ( (mask & BUFFER_BIT_DEPTH) && ctx->Depth.Mask ) {
- flags |= MGA_DEPTH;
- clear_depth = (mmesa->ClearDepth & mmesa->depth_clear_mask);
- depth_mask |= mmesa->depth_clear_mask;
- mask &= ~BUFFER_BIT_DEPTH;
- }
-
- if ( (mask & BUFFER_BIT_STENCIL) && mmesa->hw_stencil ) {
- flags |= MGA_DEPTH;
- clear_depth |= (ctx->Stencil.Clear & mmesa->stencil_clear_mask);
- depth_mask |= mmesa->stencil_clear_mask;
- mask &= ~BUFFER_BIT_STENCIL;
- }
-
- if ( flags ) {
- LOCK_HARDWARE( mmesa );
-
- /* compute region after locking: */
- cx = ctx->DrawBuffer->_Xmin;
- cy = ctx->DrawBuffer->_Ymin;
- cw = ctx->DrawBuffer->_Xmax - cx;
- ch = ctx->DrawBuffer->_Ymax - cy;
-
- if ( mmesa->dirty_cliprects )
- mgaUpdateRects( mmesa, (MGA_FRONT | MGA_BACK) );
-
- /* flip top to bottom */
- cy = dPriv->h-cy-ch;
- cx += mmesa->drawX;
- cy += mmesa->drawY;
-
- if ( MGA_DEBUG & DEBUG_VERBOSE_IOCTL )
- fprintf( stderr, "Clear, bufs %x nbox %d\n",
- (int)flags, (int)mmesa->numClipRects );
-
- for (i = 0 ; i < mmesa->numClipRects ; )
- {
- int nr = MIN2(i + MGA_NR_SAREA_CLIPRECTS, mmesa->numClipRects);
- drm_clip_rect_t *box = mmesa->pClipRects;
- drm_clip_rect_t *b = mmesa->sarea->boxes;
- int n = 0;
-
- if (cw != dPriv->w || ch != dPriv->h) {
- /* clear subregion */
- for ( ; i < nr ; i++) {
- GLint x = box[i].x1;
- GLint y = box[i].y1;
- GLint w = box[i].x2 - x;
- GLint h = box[i].y2 - y;
-
- if (x < cx) w -= cx - x, x = cx;
- if (y < cy) h -= cy - y, y = cy;
- if (x + w > cx + cw) w = cx + cw - x;
- if (y + h > cy + ch) h = cy + ch - y;
- if (w <= 0) continue;
- if (h <= 0) continue;
-
- b->x1 = x;
- b->y1 = y;
- b->x2 = x + w;
- b->y2 = y + h;
- b++;
- n++;
- }
- } else {
- /* clear whole window */
- for ( ; i < nr ; i++) {
- *b++ = box[i];
- n++;
- }
- }
-
-
- if ( MGA_DEBUG & DEBUG_VERBOSE_IOCTL )
- fprintf( stderr,
- "DRM_IOCTL_MGA_CLEAR flag 0x%x color %x depth %x nbox %d\n",
- flags, clear_color, clear_depth, mmesa->sarea->nbox );
-
- mmesa->sarea->nbox = n;
-
- clear.flags = flags;
- clear.clear_color = clear_color;
- clear.clear_depth = clear_depth;
- clear.color_mask = color_mask;
- clear.depth_mask = depth_mask;
- ret = drmCommandWrite( mmesa->driFd, DRM_MGA_CLEAR,
- &clear, sizeof(clear));
- if ( ret ) {
- fprintf( stderr, "send clear retcode = %d\n", ret );
- exit( 1 );
- }
- if ( MGA_DEBUG & DEBUG_VERBOSE_IOCTL )
- fprintf( stderr, "finished clear %d\n", ++nrclears );
- }
-
- UNLOCK_HARDWARE( mmesa );
- mmesa->dirty |= MGA_UPLOAD_CLIPRECTS|MGA_UPLOAD_CONTEXT;
- }
-
- if (mask)
- _swrast_Clear( ctx, mask );
-}
-
-
-/**
- * Wait for the previous frame of rendering has completed.
- *
- * \param mmesa Hardware context pointer.
- *
- * \bug
- * The loop in this function should have some sort of a timeout mechanism.
- *
- * \warning
- * This routine used to assume that the hardware lock was held on entry. It
- * now assumes that the lock is \b not held on entry.
- */
-
-static void mgaWaitForFrameCompletion( mgaContextPtr mmesa )
-{
- if ( mgaWaitFence( mmesa, mmesa->last_frame_fence, NULL ) == ENOSYS ) {
- unsigned wait = 0;
- GLuint last_frame;
- GLuint last_wrap;
-
-
- LOCK_HARDWARE( mmesa );
- last_frame = mmesa->sarea->last_frame.head;
- last_wrap = mmesa->sarea->last_frame.wrap;
-
- /* The DMA routines in the kernel track a couple values in the SAREA
- * that we use here. The number of times that the primary DMA buffer
- * has "wrapped" around is tracked in last_wrap. In addition, the
- * wrap count and the buffer position at the end of the last frame are
- * stored in last_frame.wrap and last_frame.head.
- *
- * By comparing the wrap counts and the current DMA pointer value
- * (read directly from the hardware) to last_frame.head, we can
- * determine when the graphics processor has processed all of the
- * commands for the last frame.
- *
- * In this case "last frame" means the frame of the *previous* swap-
- * buffers call. This is done to prevent queuing a second buffer swap
- * before the previous swap is executed.
- */
- while ( 1 ) {
- if ( last_wrap < mmesa->sarea->last_wrap ||
- ( last_wrap == mmesa->sarea->last_wrap &&
- last_frame <= (MGA_READ( MGAREG_PRIMADDRESS ) -
- mmesa->primary_offset) ) ) {
- break;
- }
- if ( 0 ) {
- wait++;
- fprintf( stderr, " last: head=0x%06x wrap=%d\n",
- last_frame, last_wrap );
- fprintf( stderr, " head: head=0x%06lx wrap=%d\n",
- (long)(MGA_READ( MGAREG_PRIMADDRESS ) - mmesa->primary_offset),
- mmesa->sarea->last_wrap );
- }
- UPDATE_LOCK( mmesa, DRM_LOCK_FLUSH );
-
- UNLOCK_HARDWARE( mmesa );
- DO_USLEEP( 1 );
- LOCK_HARDWARE( mmesa );
- }
- if ( wait )
- fprintf( stderr, "\n" );
-
- UNLOCK_HARDWARE( mmesa );
- }
-}
-
-
-/*
- * Copy the back buffer to the front buffer.
- */
-void mgaCopyBuffer( __DRIdrawable *dPriv )
-{
- mgaContextPtr mmesa;
- drm_clip_rect_t *pbox;
- GLint nbox;
- GLint ret;
- GLint i;
- GLboolean missed_target;
- __DRIscreen *psp = dPriv->driScreenPriv;
-
- assert(dPriv);
- assert(dPriv->driContextPriv);
- assert(dPriv->driContextPriv->driverPrivate);
-
- mmesa = (mgaContextPtr) dPriv->driContextPriv->driverPrivate;
-
- FLUSH_BATCH( mmesa );
-
- mgaWaitForFrameCompletion( mmesa );
- driWaitForVBlank( dPriv, & missed_target );
- if ( missed_target ) {
- mmesa->swap_missed_count++;
- (void) (*psp->systemTime->getUST)( & mmesa->swap_missed_ust );
- }
- LOCK_HARDWARE( mmesa );
-
- /* Use the frontbuffer cliprects
- */
- if (mmesa->dirty_cliprects & MGA_FRONT)
- mgaUpdateRects( mmesa, MGA_FRONT );
-
-
- pbox = dPriv->pClipRects;
- nbox = dPriv->numClipRects;
-
- for (i = 0 ; i < nbox ; )
- {
- int nr = MIN2(i + MGA_NR_SAREA_CLIPRECTS, dPriv->numClipRects);
- drm_clip_rect_t *b = mmesa->sarea->boxes;
-
- mmesa->sarea->nbox = nr - i;
-
- for ( ; i < nr ; i++)
- *b++ = pbox[i];
-
- if (0)
- fprintf(stderr, "DRM_IOCTL_MGA_SWAP\n");
-
- ret = drmCommandNone( mmesa->driFd, DRM_MGA_SWAP );
- if ( ret ) {
- printf("send swap retcode = %d\n", ret);
- exit(1);
- }
- }
-
- (void) mgaSetFence( mmesa, & mmesa->last_frame_fence );
- UNLOCK_HARDWARE( mmesa );
-
- mmesa->dirty |= MGA_UPLOAD_CLIPRECTS;
- mmesa->swap_count++;
- (void) (*psp->systemTime->getUST)( & mmesa->swap_ust );
-}
-
-
-/**
- * Implement the hardware-specific portion of \c glFinish.
- *
- * Flushes all pending commands to the hardware and wait for them to finish.
- *
- * \param ctx Context where the \c glFinish command was issued.
- *
- * \sa glFinish, mgaFlush, mgaFlushDMA
- */
-static void mgaFinish( struct gl_context *ctx )
-{
- mgaContextPtr mmesa = MGA_CONTEXT(ctx);
- uint32_t fence;
-
-
- LOCK_HARDWARE( mmesa );
- if ( mmesa->vertex_dma_buffer != NULL ) {
- mgaFlushVerticesLocked( mmesa );
- }
-
- if ( mgaSetFence( mmesa, & fence ) == 0 ) {
- UNLOCK_HARDWARE( mmesa );
- (void) mgaWaitFence( mmesa, fence, NULL );
- }
- else {
- if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL) {
- fprintf(stderr, "mgaRegetLockQuiescent\n");
- }
-
- UPDATE_LOCK( mmesa, DRM_LOCK_QUIESCENT | DRM_LOCK_FLUSH );
- UNLOCK_HARDWARE( mmesa );
- }
-}
-
-
-/**
- * Flush all commands upto at least a certain point to the hardware.
- *
- * \note
- * The term "wait" in the name of this function is misleading. It doesn't
- * actually wait for anything. It just makes sure that the commands have
- * been flushed to the hardware.
- *
- * \warning
- * As the name implies, this function assumes that the hardware lock is
- * held on entry.
- */
-void mgaWaitAgeLocked( mgaContextPtr mmesa, int age )
-{
- if (GET_DISPATCH_AGE(mmesa) < age) {
- UPDATE_LOCK( mmesa, DRM_LOCK_FLUSH );
- }
-}
-
-
-static GLboolean intersect_rect( drm_clip_rect_t *out,
- const drm_clip_rect_t *a,
- const drm_clip_rect_t *b )
-{
- *out = *a;
- if (b->x1 > out->x1) out->x1 = b->x1;
- if (b->y1 > out->y1) out->y1 = b->y1;
- if (b->x2 < out->x2) out->x2 = b->x2;
- if (b->y2 < out->y2) out->y2 = b->y2;
-
- return ((out->x1 < out->x2) && (out->y1 < out->y2));
-}
-
-
-
-
-static void age_mmesa( mgaContextPtr mmesa, int age )
-{
- if (mmesa->CurrentTexObj[0]) mmesa->CurrentTexObj[0]->age = age;
- if (mmesa->CurrentTexObj[1]) mmesa->CurrentTexObj[1]->age = age;
-}
-
-
-void mgaFlushVerticesLocked( mgaContextPtr mmesa )
-{
- drm_clip_rect_t *pbox = mmesa->pClipRects;
- int nbox = mmesa->numClipRects;
- drmBufPtr buffer = mmesa->vertex_dma_buffer;
- drm_mga_vertex_t vertex;
- int i;
-
- mmesa->vertex_dma_buffer = 0;
-
- if (!buffer)
- return;
-
- if (mmesa->dirty_cliprects & mmesa->draw_buffer)
- mgaUpdateRects( mmesa, mmesa->draw_buffer );
-
- if (mmesa->dirty & ~MGA_UPLOAD_CLIPRECTS)
- mgaEmitHwStateLocked( mmesa );
-
- /* FIXME: Workaround bug in kernel module.
- */
- mmesa->sarea->dirty |= MGA_UPLOAD_CONTEXT;
-
- if (!nbox)
- buffer->used = 0;
-
- if (nbox >= MGA_NR_SAREA_CLIPRECTS)
- mmesa->dirty |= MGA_UPLOAD_CLIPRECTS;
-
-#if 0
- if (!buffer->used || !(mmesa->dirty & MGA_UPLOAD_CLIPRECTS))
- {
- if (nbox == 1)
- mmesa->sarea->nbox = 0;
- else
- mmesa->sarea->nbox = nbox;
-
- if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
- fprintf(stderr, "Firing vertex -- case a nbox %d\n", nbox);
-
- vertex.idx = buffer->idx;
- vertex.used = buffer->used;
- vertex.discard = 1;
- drmCommandWrite( mmesa->driFd, DRM_MGA_VERTEX,
- &vertex, sizeof(drmMGAVertex) );
-
- age_mmesa(mmesa, mmesa->sarea->last_enqueue);
- }
- else
-#endif
- {
- for (i = 0 ; i < nbox ; )
- {
- int nr = MIN2(i + MGA_NR_SAREA_CLIPRECTS, nbox);
- drm_clip_rect_t *b = mmesa->sarea->boxes;
- int discard = 0;
-
- if (mmesa->scissor) {
- mmesa->sarea->nbox = 0;
-
- for ( ; i < nr ; i++) {
- *b = pbox[i];
- if (intersect_rect(b, b, &mmesa->scissor_rect)) {
- mmesa->sarea->nbox++;
- b++;
- }
- }
-
- /* Culled?
- */
- if (!mmesa->sarea->nbox) {
- if (nr < nbox) continue;
- buffer->used = 0;
- }
- } else {
- mmesa->sarea->nbox = nr - i;
- for ( ; i < nr ; i++)
- *b++ = pbox[i];
- }
-
- /* Finished with the buffer?
- */
- if (nr == nbox)
- discard = 1;
-
- mmesa->sarea->dirty |= MGA_UPLOAD_CLIPRECTS;
-
- vertex.idx = buffer->idx;
- vertex.used = buffer->used;
- vertex.discard = discard;
- drmCommandWrite( mmesa->driFd, DRM_MGA_VERTEX,
- &vertex, sizeof(vertex) );
-
- age_mmesa(mmesa, mmesa->sarea->last_enqueue);
- }
- }
-
- mmesa->dirty &= ~MGA_UPLOAD_CLIPRECTS;
-}
-
-void mgaFlushVertices( mgaContextPtr mmesa )
-{
- LOCK_HARDWARE( mmesa );
- mgaFlushVerticesLocked( mmesa );
- UNLOCK_HARDWARE( mmesa );
-}
-
-
-void mgaFireILoadLocked( mgaContextPtr mmesa,
- GLuint offset, GLuint length )
-{
- if (!mmesa->iload_buffer) {
- fprintf(stderr, "mgaFireILoad: no buffer\n");
- return;
- }
-
- if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
- fprintf(stderr, "mgaFireILoad idx %d ofs 0x%x length %d\n",
- mmesa->iload_buffer->idx, (int)offset, (int)length );
-
- mga_iload_dma_ioctl( mmesa, offset, length );
-}
-
-void mgaGetILoadBufferLocked( mgaContextPtr mmesa )
-{
- if (MGA_DEBUG&DEBUG_VERBOSE_IOCTL)
- fprintf(stderr, "mgaGetIloadBuffer (buffer now %p)\n",
- (void *) mmesa->iload_buffer);
-
- mmesa->iload_buffer = mga_get_buffer_ioctl( mmesa );
-}
-
-
-/**
- * Implement the hardware-specific portion of \c glFlush.
- *
- * \param ctx Context to be flushed.
- *
- * \sa glFlush, mgaFinish, mgaFlushDMA
- */
-static void mgaFlush( struct gl_context *ctx )
-{
- mgaContextPtr mmesa = MGA_CONTEXT( ctx );
-
-
- LOCK_HARDWARE( mmesa );
- if ( mmesa->vertex_dma_buffer != NULL ) {
- mgaFlushVerticesLocked( mmesa );
- }
-
- UPDATE_LOCK( mmesa, DRM_LOCK_FLUSH );
- UNLOCK_HARDWARE( mmesa );
-}
-
-
-int mgaFlushDMA( int fd, drmLockFlags flags )
-{
- drm_lock_t lock;
- int ret, i = 0;
-
- memset( &lock, 0, sizeof(lock) );
-
- lock.flags = flags & (DRM_LOCK_QUIESCENT | DRM_LOCK_FLUSH
- | DRM_LOCK_FLUSH_ALL);
-
- do {
- ret = drmCommandWrite( fd, DRM_MGA_FLUSH, &lock, sizeof(lock) );
- } while ( ret && errno == EBUSY && i++ < DRM_MGA_IDLE_RETRY );
-
- if ( ret == 0 )
- return 0;
- if ( errno != EBUSY )
- return -errno;
-
- if ( lock.flags & DRM_LOCK_QUIESCENT ) {
- /* Only keep trying if we need quiescence.
- */
- lock.flags &= ~(DRM_LOCK_FLUSH | DRM_LOCK_FLUSH_ALL);
-
- do {
- ret = drmCommandWrite( fd, DRM_MGA_FLUSH, &lock, sizeof(lock) );
- } while ( ret && errno == EBUSY && i++ < DRM_MGA_IDLE_RETRY );
- }
-
- if ( ret == 0 ) {
- return 0;
- } else {
- return -errno;
- }
-}
-
-void mgaInitIoctlFuncs( struct dd_function_table *functions )
-{
- functions->Clear = mgaClear;
- functions->Flush = mgaFlush;
- functions->Finish = mgaFinish;
-}