From 1759c16ab9b64598968a0058039e8a66bf5f9773 Mon Sep 17 00:00:00 2001 From: David Dawes Date: Mon, 9 Apr 2001 16:27:54 +0000 Subject: Import -f XFree86 4.0.99.2 --- linux-core/drm_bufs.c | 198 +------------------------------------------------- 1 file changed, 2 insertions(+), 196 deletions(-) (limited to 'linux-core/drm_bufs.c') diff --git a/linux-core/drm_bufs.c b/linux-core/drm_bufs.c index 16af7bd5..63cfb0d4 100644 --- a/linux-core/drm_bufs.c +++ b/linux-core/drm_bufs.c @@ -37,10 +37,6 @@ #define __HAVE_PCI_DMA 0 #endif -#ifndef __HAVE_SG -#define __HAVE_SG 0 -#endif - #ifndef DRIVER_BUF_PRIV_T #define DRIVER_BUF_PRIV_T u32 #endif @@ -107,16 +103,13 @@ int DRM(addmap)( struct inode *inode, struct file *filp, switch ( map->type ) { case _DRM_REGISTERS: case _DRM_FRAME_BUFFER: -#if !defined(__sparc__) && !defined(__alpha__) +#ifndef __sparc__ if ( map->offset + map->size < map->offset || map->offset < virt_to_phys(high_memory) ) { DRM(free)( map, sizeof(*map), DRM_MEM_MAPS ); return -EINVAL; } #endif -#ifdef __alpha__ - map->offset += dev->hose->mem_space->start; -#endif #if __REALLY_HAVE_MTRR if ( map->type == _DRM_FRAME_BUFFER || (map->flags & _DRM_WRITE_COMBINING) ) { @@ -142,21 +135,10 @@ int DRM(addmap)( struct inode *inode, struct file *filp, break; #if __REALLY_HAVE_AGP case _DRM_AGP: -#ifdef __alpha__ - map->offset += dev->hose->mem_space->start; -#endif map->offset = map->offset + dev->agp->base; map->mtrr = dev->agp->agp_mtrr; /* for getmap */ break; #endif - case _DRM_SCATTER_GATHER: - if (!dev->sg) { - DRM(free)(map, sizeof(*map), DRM_MEM_MAPS); - return -EINVAL; - } - map->offset = map->offset + dev->sg->handle; - break; - default: DRM(free)( map, sizeof(*map), DRM_MEM_MAPS ); return -EINVAL; @@ -255,7 +237,6 @@ int DRM(rmmap)(struct inode *inode, struct file *filp, vfree(map->handle); break; case _DRM_AGP: - case _DRM_SCATTER_GATHER: break; } DRM(free)(map, sizeof(*map), DRM_MEM_MAPS); @@ -584,159 +565,6 @@ int DRM(addbufs_pci)( struct inode *inode, struct file *filp, } #endif /* __HAVE_PCI_DMA */ -#ifdef __HAVE_SG -int DRM(addbufs_sg)( struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg ) -{ - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->dev; - drm_device_dma_t *dma = dev->dma; - drm_buf_desc_t request; - drm_buf_entry_t *entry; - drm_buf_t *buf; - unsigned long offset; - unsigned long agp_offset; - int count; - int order; - int size; - int alignment; - int page_order; - int total; - int byte_count; - int i; - - if ( !dma ) return -EINVAL; - - if ( copy_from_user( &request, (drm_buf_desc_t *)arg, - sizeof(request) ) ) - return -EFAULT; - - count = request.count; - order = DRM(order)( request.size ); - size = 1 << order; - - alignment = (request.flags & _DRM_PAGE_ALIGN) - ? PAGE_ALIGN(size) : size; - page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0; - total = PAGE_SIZE << page_order; - - byte_count = 0; - agp_offset = request.agp_start; - - DRM_DEBUG( "count: %d\n", count ); - DRM_DEBUG( "order: %d\n", order ); - DRM_DEBUG( "size: %d\n", size ); - DRM_DEBUG( "agp_offset: %ld\n", agp_offset ); - DRM_DEBUG( "alignment: %d\n", alignment ); - DRM_DEBUG( "page_order: %d\n", page_order ); - DRM_DEBUG( "total: %d\n", total ); - - if ( order < DRM_MIN_ORDER || order > DRM_MAX_ORDER ) return -EINVAL; - if ( dev->queue_count ) return -EBUSY; /* Not while in use */ - - spin_lock( &dev->count_lock ); - if ( dev->buf_use ) { - spin_unlock( &dev->count_lock ); - return -EBUSY; - } - atomic_inc( &dev->buf_alloc ); - spin_unlock( &dev->count_lock ); - - down( &dev->struct_sem ); - entry = &dma->bufs[order]; - if ( entry->buf_count ) { - up( &dev->struct_sem ); - atomic_dec( &dev->buf_alloc ); - return -ENOMEM; /* May only call once for each order */ - } - - entry->buflist = DRM(alloc)( count * sizeof(*entry->buflist), - DRM_MEM_BUFS ); - if ( !entry->buflist ) { - up( &dev->struct_sem ); - atomic_dec( &dev->buf_alloc ); - return -ENOMEM; - } - memset( entry->buflist, 0, count * sizeof(*entry->buflist) ); - - entry->buf_size = size; - entry->page_order = page_order; - - offset = 0; - - while ( entry->buf_count < count ) { - buf = &entry->buflist[entry->buf_count]; - buf->idx = dma->buf_count + entry->buf_count; - buf->total = alignment; - buf->order = order; - buf->used = 0; - - buf->offset = (dma->byte_count + offset); - buf->bus_address = agp_offset + offset; - buf->address = (void *)(agp_offset + offset + dev->sg->handle); - buf->next = NULL; - buf->waiting = 0; - buf->pending = 0; - init_waitqueue_head( &buf->dma_wait ); - buf->pid = 0; - - buf->dev_priv_size = sizeof(DRIVER_BUF_PRIV_T); - buf->dev_private = DRM(alloc)( sizeof(DRIVER_BUF_PRIV_T), - DRM_MEM_BUFS ); - memset( buf->dev_private, 0, buf->dev_priv_size ); - -#if __HAVE_DMA_HISTOGRAM - buf->time_queued = 0; - buf->time_dispatched = 0; - buf->time_completed = 0; - buf->time_freed = 0; -#endif - DRM_DEBUG( "buffer %d @ %p\n", - entry->buf_count, buf->address ); - - offset += alignment; - entry->buf_count++; - byte_count += PAGE_SIZE << page_order; - } - - DRM_DEBUG( "byte_count: %d\n", byte_count ); - - dma->buflist = DRM(realloc)( dma->buflist, - dma->buf_count * sizeof(*dma->buflist), - (dma->buf_count + entry->buf_count) - * sizeof(*dma->buflist), - DRM_MEM_BUFS ); - for ( i = 0 ; i < entry->buf_count ; i++ ) { - dma->buflist[i + dma->buf_count] = &entry->buflist[i]; - } - - dma->buf_count += entry->buf_count; - dma->byte_count += byte_count; - - DRM_DEBUG( "dma->buf_count : %d\n", dma->buf_count ); - DRM_DEBUG( "entry->buf_count : %d\n", entry->buf_count ); - -#if __HAVE_DMA_FREELIST - DRM(freelist_create)( &entry->freelist, entry->buf_count ); - for ( i = 0 ; i < entry->buf_count ; i++ ) { - DRM(freelist_put)( dev, &entry->freelist, &entry->buflist[i] ); - } -#endif - up( &dev->struct_sem ); - - request.count = entry->buf_count; - request.size = size; - - if ( copy_to_user( (drm_buf_desc_t *)arg, &request, sizeof(request) ) ) - return -EFAULT; - - dma->flags = _DRM_DMA_USE_SG; - - atomic_dec( &dev->buf_alloc ); - return 0; -} -#endif /* __HAVE_SG */ - int DRM(addbufs)( struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg ) { @@ -751,11 +579,6 @@ int DRM(addbufs)( struct inode *inode, struct file *filp, return DRM(addbufs_agp)( inode, filp, cmd, arg ); else #endif -#if __HAVE_SG - if ( request.flags & _DRM_SG_BUFFER ) - return DRM(addbufs_sg)( inode, filp, cmd, arg ); - else -#endif #if __HAVE_PCI_DMA return DRM(addbufs_pci)( inode, filp, cmd, arg ); #else @@ -937,8 +760,7 @@ int DRM(mapbufs)( struct inode *inode, struct file *filp, return -EFAULT; if ( request.count >= dma->buf_count ) { - if ( (__HAVE_AGP && (dma->flags & _DRM_DMA_USE_AGP)) || - (__HAVE_SG && (dma->flags & _DRM_DMA_USE_SG)) ) { + if ( __HAVE_AGP && (dma->flags & _DRM_DMA_USE_AGP) ) { drm_map_t *map = DRIVER_AGP_BUFFERS_MAP( dev ); if ( !map ) { @@ -946,34 +768,18 @@ int DRM(mapbufs)( struct inode *inode, struct file *filp, goto done; } -#if LINUX_VERSION_CODE <= 0x020402 down( ¤t->mm->mmap_sem ); -#else - down_write( ¤t->mm->mmap_sem ); -#endif virtual = do_mmap( filp, 0, map->size, PROT_READ | PROT_WRITE, MAP_SHARED, (unsigned long)map->offset ); -#if LINUX_VERSION_CODE <= 0x020402 up( ¤t->mm->mmap_sem ); -#else - up_write( ¤t->mm->mmap_sem ); -#endif } else { -#if LINUX_VERSION_CODE <= 0x020402 down( ¤t->mm->mmap_sem ); -#else - down_write( ¤t->mm->mmap_sem ); -#endif virtual = do_mmap( filp, 0, dma->byte_count, PROT_READ | PROT_WRITE, MAP_SHARED, 0 ); -#if LINUX_VERSION_CODE <= 0x020402 up( ¤t->mm->mmap_sem ); -#else - up_write( ¤t->mm->mmap_sem ); -#endif } if ( virtual > -1024UL ) { /* Real error */ -- cgit v1.2.3