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authorMike Gabriel <mike.gabriel@das-netzwerkteam.de>2015-02-02 15:02:49 +0100
committerMike Gabriel <mike.gabriel@das-netzwerkteam.de>2015-02-02 15:02:49 +0100
commitb16b9e4656e7199c2aec74a4c8ebc7a875d3ba73 (patch)
tree4361edef0d42d5bf5ac984ef72b4fac35426eae7 /nx-X11/extras/drm/linux/drm_bufs.h
parent0d5a83e986f39982c0924652a3662e60b1f23162 (diff)
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massive reduction of unneeded files
Diffstat (limited to 'nx-X11/extras/drm/linux/drm_bufs.h')
-rw-r--r--nx-X11/extras/drm/linux/drm_bufs.h1529
1 files changed, 0 insertions, 1529 deletions
diff --git a/nx-X11/extras/drm/linux/drm_bufs.h b/nx-X11/extras/drm/linux/drm_bufs.h
deleted file mode 100644
index 03900d1b1..000000000
--- a/nx-X11/extras/drm/linux/drm_bufs.h
+++ /dev/null
@@ -1,1529 +0,0 @@
-/**
- * \file drm_bufs.h
- * Generic buffer template
- *
- * \author Rickard E. (Rik) Faith <faith@valinux.com>
- * \author Gareth Hughes <gareth@valinux.com>
- */
-
-/*
- * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com
- *
- * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
- * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
- * 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
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * 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 NONINFRINGEMENT. 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.
- */
-
-#include <linux/vmalloc.h>
-#include "drmP.h"
-
-/**
- * Compute size order. Returns the exponent of the smaller power of two which
- * is greater or equal to given number.
- *
- * \param size size.
- * \return order.
- *
- * \todo Can be made faster.
- */
-int DRM(order)( unsigned long size )
-{
- int order;
- unsigned long tmp;
-
- for (order = 0, tmp = size >> 1; tmp; tmp >>= 1, order++)
- ;
-
- if (size & (size - 1))
- ++order;
-
- return order;
-}
-
-static int permanent_maps = 0;
- /**
- * Adjusts the memory offset to its absolute value according to the mapping
- * type. Adds the map to the map list drm_device::maplist. Adds MTRR's where
- * applicable and if supported by the kernel.
- */
-int DRM(initmap)( drm_device_t *dev, unsigned int offset, unsigned int size, int type, int flags )
-{
- drm_map_t *map;
- drm_map_list_t *list;
-
- DRM_DEBUG("\n");
-
- if ( (offset & (~PAGE_MASK)) || (size & (~PAGE_MASK)) )
- return -EINVAL;
-#if !defined(__sparc__) && !defined(__alpha__)
- if ( offset + size < offset || offset < virt_to_phys(high_memory) )
- return -EINVAL;
-#endif
- if ( !(list = DRM(alloc)( sizeof(*list), DRM_MEM_MAPS )))
- return -ENOMEM;
- memset(list, 0, sizeof(*list));
-
- if ( !(map = DRM(alloc)( sizeof(*map), DRM_MEM_MAPS ))) {
- DRM(free)(list, sizeof(*list), DRM_MEM_MAPS);
- return -ENOMEM;
- }
-
- *map = (drm_map_t){
- .offset = offset,
- .size = size,
- .type = type,
- .flags = flags,
- .mtrr = -1,
- .handle = 0,
- };
- list->map = map;
-
- DRM_DEBUG( "initmap offset = 0x%08lx, size = 0x%08lx, type = %d\n",
- map->offset, map->size, map->type );
-
-#ifdef __alpha__
- map->offset += dev->hose->mem_space->start;
-#endif
- if (drm_core_has_MTRR(dev)) {
- if ( map->type == _DRM_FRAME_BUFFER ||
- (map->flags & _DRM_WRITE_COMBINING) ) {
- map->mtrr = mtrr_add( map->offset, map->size,
- MTRR_TYPE_WRCOMB, 1 );
- }
- }
-
- if (map->type == _DRM_REGISTERS)
- map->handle = DRM(ioremap)( map->offset, map->size, dev );
-
- down(&dev->struct_sem);
- list_add(&list->head, &dev->maplist->head);
- up(&dev->struct_sem);
-
- permanent_maps = 1;
- DRM_DEBUG("finished\n");
-
- return 0;
-}
-
-/**
- * Ioctl to specify a range of memory that is available for mapping by a non-root process.
- *
- * \param inode device inode.
- * \param filp file pointer.
- * \param cmd command.
- * \param arg pointer to a drm_map structure.
- * \return zero on success or a negative value on error.
- *
- * Adjusts the memory offset to its absolute value according to the mapping
- * type. Adds the map to the map list drm_device::maplist. Adds MTRR's where
- * applicable and if supported by the kernel.
- */
-int DRM(addmap)( 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_map_t *map;
- drm_map_t __user *argp = (void __user *)arg;
- drm_map_list_t *list;
-
- if ( !(filp->f_mode & 3) ) return -EACCES; /* Require read/write */
-
- map = DRM(alloc)( sizeof(*map), DRM_MEM_MAPS );
- if ( !map )
- return -ENOMEM;
-
- if ( copy_from_user( map, argp, sizeof(*map) ) ) {
- DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
- return -EFAULT;
- }
-
- /* Only allow shared memory to be removable since we only keep enough
- * book keeping information about shared memory to allow for removal
- * when processes fork.
- */
- if ( (map->flags & _DRM_REMOVABLE) && map->type != _DRM_SHM ) {
- DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
- return -EINVAL;
- }
- DRM_DEBUG( "offset = 0x%08lx, size = 0x%08lx, type = %d\n",
- map->offset, map->size, map->type );
- if ( (map->offset & (~PAGE_MASK)) || (map->size & (~PAGE_MASK)) ) {
- DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
- return -EINVAL;
- }
- map->mtrr = -1;
- map->handle = NULL;
-
- switch ( map->type ) {
- case _DRM_REGISTERS:
- case _DRM_FRAME_BUFFER: {
- /* after all the drivers switch to permanent mapping this should just return an error */
- struct list_head *_list;
-
- /* If permanent maps are implemented, maps must match */
- if (permanent_maps) {
- DRM_DEBUG( "Looking for: offset = 0x%08lx, size = 0x%08lx, type = %d\n",
- map->offset, map->size, map->type );
- list_for_each( _list, &dev->maplist->head ) {
- drm_map_list_t *_entry = list_entry( _list, drm_map_list_t, head );
- DRM_DEBUG( "Checking: offset = 0x%08lx, size = 0x%08lx, type = %d\n",
- _entry->map->offset, _entry->map->size, _entry->map->type );
- if ( _entry->map && map->type == _entry->map->type &&
- map->offset == _entry->map->offset ) {
- _entry->map->size = map->size;
- DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
- map = _entry->map;
- DRM_DEBUG( "Found existing: offset = 0x%08lx, size = 0x%08lx, type = %d\n",
- map->offset, map->size, map->type );
- goto found_it;
- }
- }
- /* addmap didn't match an existing permanent map, that's an error */
- return -EINVAL;
- }
-#if !defined(__sparc__) && !defined(__alpha__) && !defined(__ia64__)
- 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 (drm_core_has_MTRR(dev)) {
- if ( map->type == _DRM_FRAME_BUFFER ||
- (map->flags & _DRM_WRITE_COMBINING) ) {
- map->mtrr = mtrr_add( map->offset, map->size,
- MTRR_TYPE_WRCOMB, 1 );
- }
- }
- if (map->type == _DRM_REGISTERS)
- map->handle = DRM(ioremap)( map->offset, map->size,
- dev );
- break;
- }
- case _DRM_SHM:
- map->handle = vmalloc_32(map->size);
- DRM_DEBUG( "%lu %d %p\n",
- map->size, DRM(order)( map->size ), map->handle );
- if ( !map->handle ) {
- DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
- return -ENOMEM;
- }
- map->offset = (unsigned long)map->handle;
- if ( map->flags & _DRM_CONTAINS_LOCK ) {
- /* Prevent a 2nd X Server from creating a 2nd lock */
- if (dev->lock.hw_lock != NULL) {
- vfree( map->handle );
- DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
- return -EBUSY;
- }
- dev->sigdata.lock =
- dev->lock.hw_lock = map->handle; /* Pointer to lock */
- }
- break;
- case _DRM_AGP:
- if (drm_core_has_AGP(dev)) {
-#ifdef __alpha__
- map->offset += dev->hose->mem_space->start;
-#endif
- map->offset += dev->agp->base;
- map->mtrr = dev->agp->agp_mtrr; /* for getmap */
- }
- break;
- case _DRM_SCATTER_GATHER:
- if (!dev->sg) {
- DRM(free)(map, sizeof(*map), DRM_MEM_MAPS);
- return -EINVAL;
- }
- map->offset += dev->sg->handle;
- break;
-
- default:
- DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
- return -EINVAL;
- }
-
- list = DRM(alloc)(sizeof(*list), DRM_MEM_MAPS);
- if(!list) {
- DRM(free)(map, sizeof(*map), DRM_MEM_MAPS);
- return -EINVAL;
- }
- memset(list, 0, sizeof(*list));
- list->map = map;
-
- down(&dev->struct_sem);
- list_add(&list->head, &dev->maplist->head);
- up(&dev->struct_sem);
-found_it:
- if ( copy_to_user( argp, map, sizeof(*map) ) )
- return -EFAULT;
- if ( map->type != _DRM_SHM ) {
- if ( copy_to_user( &argp->handle,
- &map->offset,
- sizeof(map->offset) ) )
- return -EFAULT;
- }
- return 0;
-}
-
-
-/**
- * Remove a map private from list and deallocate resources if the mapping
- * isn't in use.
- *
- * \param inode device inode.
- * \param filp file pointer.
- * \param cmd command.
- * \param arg pointer to a drm_map_t structure.
- * \return zero on success or a negative value on error.
- *
- * Searches the map on drm_device::maplist, removes it from the list, see if
- * its being used, and free any associate resource (such as MTRR's) if it's not
- * being on use.
- *
- * \sa addmap().
- */
-int DRM(rmmap)(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;
- struct list_head *list;
- drm_map_list_t *r_list = NULL;
- drm_vma_entry_t *pt, *prev;
- drm_map_t *map;
- drm_map_t request;
- int found_maps = 0;
-
- if (copy_from_user(&request, (drm_map_t __user *)arg,
- sizeof(request))) {
- return -EFAULT;
- }
-
- down(&dev->struct_sem);
- list = &dev->maplist->head;
- list_for_each(list, &dev->maplist->head) {
- r_list = list_entry(list, drm_map_list_t, head);
-
- if(r_list->map &&
- r_list->map->handle == request.handle &&
- r_list->map->flags & _DRM_REMOVABLE) break;
- }
-
- /* List has wrapped around to the head pointer, or its empty we didn't
- * find anything.
- */
- if(list == (&dev->maplist->head)) {
- up(&dev->struct_sem);
- return -EINVAL;
- }
- map = r_list->map;
-
- /* Register and framebuffer maps are permanent */
- if ((map->type == _DRM_REGISTERS) || (map->type == _DRM_FRAME_BUFFER)) {
- up(&dev->struct_sem);
- return 0;
- }
- list_del(list);
- DRM(free)(list, sizeof(*list), DRM_MEM_MAPS);
-
- for (pt = dev->vmalist, prev = NULL; pt; prev = pt, pt = pt->next) {
- if (pt->vma->vm_private_data == map) found_maps++;
- }
-
- if(!found_maps) {
- switch (map->type) {
- case _DRM_REGISTERS:
- case _DRM_FRAME_BUFFER:
- break; /* Can't get here, make compiler happy */
- case _DRM_SHM:
- vfree(map->handle);
- break;
- case _DRM_AGP:
- case _DRM_SCATTER_GATHER:
- break;
- }
- DRM(free)(map, sizeof(*map), DRM_MEM_MAPS);
- }
- up(&dev->struct_sem);
- return 0;
-}
-
-/**
- * Cleanup after an error on one of the addbufs() functions.
- *
- * \param dev DRM device.
- * \param entry buffer entry where the error occurred.
- *
- * Frees any pages and buffers associated with the given entry.
- */
-static void DRM(cleanup_buf_error)(drm_device_t *dev, drm_buf_entry_t *entry)
-{
- int i;
-
- if (entry->seg_count) {
- for (i = 0; i < entry->seg_count; i++) {
- if (entry->seglist[i]) {
- DRM(free_pages)(entry->seglist[i],
- entry->page_order,
- DRM_MEM_DMA);
- }
- }
- DRM(free)(entry->seglist,
- entry->seg_count *
- sizeof(*entry->seglist),
- DRM_MEM_SEGS);
-
- entry->seg_count = 0;
- }
-
- if (entry->buf_count) {
- for (i = 0; i < entry->buf_count; i++) {
- if (entry->buflist[i].dev_private) {
- DRM(free)(entry->buflist[i].dev_private,
- entry->buflist[i].dev_priv_size,
- DRM_MEM_BUFS);
- }
- }
- DRM(free)(entry->buflist,
- entry->buf_count *
- sizeof(*entry->buflist),
- DRM_MEM_BUFS);
-
- entry->buf_count = 0;
- }
-}
-
-#if __OS_HAS_AGP
-/**
- * Add AGP buffers for DMA transfers (ioctl).
- *
- * \param inode device inode.
- * \param filp file pointer.
- * \param cmd command.
- * \param arg pointer to a drm_buf_desc_t request.
- * \return zero on success or a negative number on failure.
- *
- * After some sanity checks creates a drm_buf structure for each buffer and
- * reallocates the buffer list of the same size order to accommodate the new
- * buffers.
- */
-int DRM(addbufs_agp)( 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;
- drm_buf_t **temp_buflist;
- drm_buf_desc_t __user *argp = (void __user *)arg;
-
- if ( !dma ) return -EINVAL;
-
- if ( copy_from_user( &request, argp,
- 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 = dev->agp->base + 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: %lu\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 */
- }
-
- if (count < 0 || count > 4096) {
- up( &dev->struct_sem );
- atomic_dec( &dev->buf_alloc );
- return -EINVAL;
- }
-
- 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);
- buf->next = NULL;
- buf->waiting = 0;
- buf->pending = 0;
- init_waitqueue_head( &buf->dma_wait );
- buf->filp = NULL;
-
- buf->dev_priv_size = dev->dev_priv_size;
- buf->dev_private = DRM(alloc)( buf->dev_priv_size,
- DRM_MEM_BUFS );
- if(!buf->dev_private) {
- /* Set count correctly so we free the proper amount. */
- entry->buf_count = count;
- DRM(cleanup_buf_error)(dev,entry);
- up( &dev->struct_sem );
- atomic_dec( &dev->buf_alloc );
- return -ENOMEM;
- }
- memset( buf->dev_private, 0, buf->dev_priv_size );
-
- 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 );
-
- temp_buflist = DRM(realloc)( dma->buflist,
- dma->buf_count * sizeof(*dma->buflist),
- (dma->buf_count + entry->buf_count)
- * sizeof(*dma->buflist),
- DRM_MEM_BUFS );
- if(!temp_buflist) {
- /* Free the entry because it isn't valid */
- DRM(cleanup_buf_error)(dev,entry);
- up( &dev->struct_sem );
- atomic_dec( &dev->buf_alloc );
- return -ENOMEM;
- }
- dma->buflist = temp_buflist;
-
- 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 );
-
- up( &dev->struct_sem );
-
- request.count = entry->buf_count;
- request.size = size;
-
- if ( copy_to_user( argp, &request, sizeof(request) ) )
- return -EFAULT;
-
- dma->flags = _DRM_DMA_USE_AGP;
-
- atomic_dec( &dev->buf_alloc );
- return 0;
-}
-#endif /* __OS_HAS_AGP */
-
-int DRM(addbufs_pci)( 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;
- int count;
- int order;
- int size;
- int total;
- int page_order;
- drm_buf_entry_t *entry;
- unsigned long page;
- drm_buf_t *buf;
- int alignment;
- unsigned long offset;
- int i;
- int byte_count;
- int page_count;
- unsigned long *temp_pagelist;
- drm_buf_t **temp_buflist;
- drm_buf_desc_t __user *argp = (void __user *)arg;
-
- if (!drm_core_check_feature(dev, DRIVER_PCI_DMA)) return -EINVAL;
-
- if ( !dma ) return -EINVAL;
-
- if ( copy_from_user( &request, argp, sizeof(request) ) )
- return -EFAULT;
-
- count = request.count;
- order = DRM(order)( request.size );
- size = 1 << order;
-
- DRM_DEBUG( "count=%d, size=%d (%d), order=%d, queue_count=%d\n",
- request.count, request.size, size,
- order, dev->queue_count );
-
- if ( order < DRM_MIN_ORDER || order > DRM_MAX_ORDER ) return -EINVAL;
- if ( dev->queue_count ) return -EBUSY; /* Not while in use */
-
- 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;
-
- 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 */
- }
-
- if (count < 0 || count > 4096) {
- up( &dev->struct_sem );
- atomic_dec( &dev->buf_alloc );
- return -EINVAL;
- }
-
- 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->seglist = DRM(alloc)( count * sizeof(*entry->seglist),
- DRM_MEM_SEGS );
- if ( !entry->seglist ) {
- DRM(free)( entry->buflist,
- count * sizeof(*entry->buflist),
- DRM_MEM_BUFS );
- up( &dev->struct_sem );
- atomic_dec( &dev->buf_alloc );
- return -ENOMEM;
- }
- memset( entry->seglist, 0, count * sizeof(*entry->seglist) );
-
- /* Keep the original pagelist until we know all the allocations
- * have succeeded
- */
- temp_pagelist = DRM(alloc)( (dma->page_count + (count << page_order))
- * sizeof(*dma->pagelist),
- DRM_MEM_PAGES );
- if (!temp_pagelist) {
- DRM(free)( entry->buflist,
- count * sizeof(*entry->buflist),
- DRM_MEM_BUFS );
- DRM(free)( entry->seglist,
- count * sizeof(*entry->seglist),
- DRM_MEM_SEGS );
- up( &dev->struct_sem );
- atomic_dec( &dev->buf_alloc );
- return -ENOMEM;
- }
- memcpy(temp_pagelist,
- dma->pagelist,
- dma->page_count * sizeof(*dma->pagelist));
- DRM_DEBUG( "pagelist: %d entries\n",
- dma->page_count + (count << page_order) );
-
- entry->buf_size = size;
- entry->page_order = page_order;
- byte_count = 0;
- page_count = 0;
-
- while ( entry->buf_count < count ) {
- page = DRM(alloc_pages)( page_order, DRM_MEM_DMA );
- if ( !page ) {
- /* Set count correctly so we free the proper amount. */
- entry->buf_count = count;
- entry->seg_count = count;
- DRM(cleanup_buf_error)(dev,entry);
- DRM(free)( temp_pagelist,
- (dma->page_count + (count << page_order))
- * sizeof(*dma->pagelist),
- DRM_MEM_PAGES );
- up( &dev->struct_sem );
- atomic_dec( &dev->buf_alloc );
- return -ENOMEM;
- }
- entry->seglist[entry->seg_count++] = page;
- for ( i = 0 ; i < (1 << page_order) ; i++ ) {
- DRM_DEBUG( "page %d @ 0x%08lx\n",
- dma->page_count + page_count,
- page + PAGE_SIZE * i );
- temp_pagelist[dma->page_count + page_count++]
- = page + PAGE_SIZE * i;
- }
- for ( offset = 0 ;
- offset + size <= total && entry->buf_count < count ;
- offset += alignment, ++entry->buf_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 + byte_count + offset);
- buf->address = (void *)(page + offset);
- buf->bus_address = virt_to_bus(buf->address);
- buf->next = NULL;
- buf->waiting = 0;
- buf->pending = 0;
- init_waitqueue_head( &buf->dma_wait );
- buf->filp = NULL;
-
- buf->dev_priv_size = dev->dev_priv_size;
- buf->dev_private = DRM(alloc)( dev->dev_priv_size,
- DRM_MEM_BUFS );
- if(!buf->dev_private) {
- /* Set count correctly so we free the proper amount. */
- entry->buf_count = count;
- entry->seg_count = count;
- DRM(cleanup_buf_error)(dev,entry);
- DRM(free)( temp_pagelist,
- (dma->page_count + (count << page_order))
- * sizeof(*dma->pagelist),
- DRM_MEM_PAGES );
- up( &dev->struct_sem );
- atomic_dec( &dev->buf_alloc );
- return -ENOMEM;
- }
- memset( buf->dev_private, 0, buf->dev_priv_size );
-
- DRM_DEBUG( "buffer %d @ %p\n",
- entry->buf_count, buf->address );
- }
- byte_count += PAGE_SIZE << page_order;
- }
-
- temp_buflist = DRM(realloc)( dma->buflist,
- dma->buf_count * sizeof(*dma->buflist),
- (dma->buf_count + entry->buf_count)
- * sizeof(*dma->buflist),
- DRM_MEM_BUFS );
- if (!temp_buflist) {
- /* Free the entry because it isn't valid */
- DRM(cleanup_buf_error)(dev,entry);
- DRM(free)( temp_pagelist,
- (dma->page_count + (count << page_order))
- * sizeof(*dma->pagelist),
- DRM_MEM_PAGES );
- up( &dev->struct_sem );
- atomic_dec( &dev->buf_alloc );
- return -ENOMEM;
- }
- dma->buflist = temp_buflist;
-
- for ( i = 0 ; i < entry->buf_count ; i++ ) {
- dma->buflist[i + dma->buf_count] = &entry->buflist[i];
- }
-
- /* No allocations failed, so now we can replace the orginal pagelist
- * with the new one.
- */
- if (dma->page_count) {
- DRM(free)(dma->pagelist,
- dma->page_count * sizeof(*dma->pagelist),
- DRM_MEM_PAGES);
- }
- dma->pagelist = temp_pagelist;
-
- dma->buf_count += entry->buf_count;
- dma->seg_count += entry->seg_count;
- dma->page_count += entry->seg_count << page_order;
- dma->byte_count += PAGE_SIZE * (entry->seg_count << page_order);
-
- up( &dev->struct_sem );
-
- request.count = entry->buf_count;
- request.size = size;
-
- if ( copy_to_user( argp, &request, sizeof(request) ) )
- return -EFAULT;
-
- atomic_dec( &dev->buf_alloc );
- return 0;
-
-}
-
-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 __user *argp = (void __user *)arg;
- 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;
- drm_buf_t **temp_buflist;
-
- if (!drm_core_check_feature(dev, DRIVER_SG)) return -EINVAL;
-
- if ( !dma ) return -EINVAL;
-
- if ( copy_from_user( &request, argp, 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: %lu\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 */
- }
-
- if (count < 0 || count > 4096) {
- up( &dev->struct_sem );
- atomic_dec( &dev->buf_alloc );
- return -EINVAL;
- }
-
- 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->filp = NULL;
-
- buf->dev_priv_size = dev->dev_priv_size;
- buf->dev_private = DRM(alloc)( dev->dev_priv_size,
- DRM_MEM_BUFS );
- if(!buf->dev_private) {
- /* Set count correctly so we free the proper amount. */
- entry->buf_count = count;
- DRM(cleanup_buf_error)(dev,entry);
- up( &dev->struct_sem );
- atomic_dec( &dev->buf_alloc );
- return -ENOMEM;
- }
-
- memset( buf->dev_private, 0, buf->dev_priv_size );
-
- 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 );
-
- temp_buflist = DRM(realloc)( dma->buflist,
- dma->buf_count * sizeof(*dma->buflist),
- (dma->buf_count + entry->buf_count)
- * sizeof(*dma->buflist),
- DRM_MEM_BUFS );
- if(!temp_buflist) {
- /* Free the entry because it isn't valid */
- DRM(cleanup_buf_error)(dev,entry);
- up( &dev->struct_sem );
- atomic_dec( &dev->buf_alloc );
- return -ENOMEM;
- }
- dma->buflist = temp_buflist;
-
- 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 );
-
- up( &dev->struct_sem );
-
- request.count = entry->buf_count;
- request.size = size;
-
- if ( copy_to_user( argp, &request, sizeof(request) ) )
- return -EFAULT;
-
- dma->flags = _DRM_DMA_USE_SG;
-
- atomic_dec( &dev->buf_alloc );
- return 0;
-}
-
-
-int DRM(addbufs_fb)( 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;
- drm_buf_t **temp_buflist;
- drm_buf_desc_t __user *argp = (void __user *)arg;
-
- if (!drm_core_check_feature(dev, DRIVER_FB_DMA)) return -EINVAL;
-
- if ( !dma ) return -EINVAL;
-
- if ( copy_from_user( &request, argp,
- 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: %lu\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 */
- }
-
- if (count < 0 || count > 4096) {
- up( &dev->struct_sem );
- atomic_dec( &dev->buf_alloc );
- return -EINVAL;
- }
-
- 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);
- buf->next = NULL;
- buf->waiting = 0;
- buf->pending = 0;
- init_waitqueue_head( &buf->dma_wait );
- buf->filp = NULL;
-
- buf->dev_priv_size = dev->dev_priv_size;
- buf->dev_private = DRM(alloc)( buf->dev_priv_size,
- DRM_MEM_BUFS );
- if(!buf->dev_private) {
- /* Set count correctly so we free the proper amount. */
- entry->buf_count = count;
- DRM(cleanup_buf_error)(dev,entry);
- up( &dev->struct_sem );
- atomic_dec( &dev->buf_alloc );
- return -ENOMEM;
- }
- memset( buf->dev_private, 0, buf->dev_priv_size );
-
- 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 );
-
- temp_buflist = DRM(realloc)( dma->buflist,
- dma->buf_count * sizeof(*dma->buflist),
- (dma->buf_count + entry->buf_count)
- * sizeof(*dma->buflist),
- DRM_MEM_BUFS );
- if(!temp_buflist) {
- /* Free the entry because it isn't valid */
- DRM(cleanup_buf_error)(dev,entry);
- up( &dev->struct_sem );
- atomic_dec( &dev->buf_alloc );
- return -ENOMEM;
- }
- dma->buflist = temp_buflist;
-
- 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 );
-
- up( &dev->struct_sem );
-
- request.count = entry->buf_count;
- request.size = size;
-
- if ( copy_to_user( argp, &request, sizeof(request) ) )
- return -EFAULT;
-
- dma->flags = _DRM_DMA_USE_FB;
-
- atomic_dec( &dev->buf_alloc );
- return 0;
-}
-
-
-
-/**
- * Add buffers for DMA transfers (ioctl).
- *
- * \param inode device inode.
- * \param filp file pointer.
- * \param cmd command.
- * \param arg pointer to a drm_buf_desc_t request.
- * \return zero on success or a negative number on failure.
- *
- * According with the memory type specified in drm_buf_desc::flags and the
- * build options, it dispatches the call either to addbufs_agp(),
- * addbufs_sg() or addbufs_pci() for AGP, scatter-gather or consistent
- * PCI memory respectively.
- */
-int DRM(addbufs)( struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg )
-{
- drm_buf_desc_t request;
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->dev;
-
- if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA))
- return -EINVAL;
-
- if ( copy_from_user( &request, (drm_buf_desc_t __user *)arg,
- sizeof(request) ) )
- return -EFAULT;
-
-#if __OS_HAS_AGP
- if ( request.flags & _DRM_AGP_BUFFER )
- return DRM(addbufs_agp)( inode, filp, cmd, arg );
- else
-#endif
- if ( request.flags & _DRM_SG_BUFFER )
- return DRM(addbufs_sg)( inode, filp, cmd, arg );
- else if ( request.flags & _DRM_FB_BUFFER )
- return DRM(addbufs_fb)( inode, filp, cmd, arg );
- else
- return DRM(addbufs_pci)( inode, filp, cmd, arg );
-}
-
-
-/**
- * Get information about the buffer mappings.
- *
- * This was originally mean for debugging purposes, or by a sophisticated
- * client library to determine how best to use the available buffers (e.g.,
- * large buffers can be used for image transfer).
- *
- * \param inode device inode.
- * \param filp file pointer.
- * \param cmd command.
- * \param arg pointer to a drm_buf_info structure.
- * \return zero on success or a negative number on failure.
- *
- * Increments drm_device::buf_use while holding the drm_device::count_lock
- * lock, preventing of allocating more buffers after this call. Information
- * about each requested buffer is then copied into user space.
- */
-int DRM(infobufs)( 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_info_t request;
- drm_buf_info_t __user *argp = (void __user *)arg;
- int i;
- int count;
-
- if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA))
- return -EINVAL;
-
- if ( !dma ) return -EINVAL;
-
- spin_lock( &dev->count_lock );
- if ( atomic_read( &dev->buf_alloc ) ) {
- spin_unlock( &dev->count_lock );
- return -EBUSY;
- }
- ++dev->buf_use; /* Can't allocate more after this call */
- spin_unlock( &dev->count_lock );
-
- if ( copy_from_user( &request, argp, sizeof(request) ) )
- return -EFAULT;
-
- for ( i = 0, count = 0 ; i < DRM_MAX_ORDER + 1 ; i++ ) {
- if ( dma->bufs[i].buf_count ) ++count;
- }
-
- DRM_DEBUG( "count = %d\n", count );
-
- if ( request.count >= count ) {
- for ( i = 0, count = 0 ; i < DRM_MAX_ORDER + 1 ; i++ ) {
- if ( dma->bufs[i].buf_count ) {
- drm_buf_desc_t __user *to = &request.list[count];
- drm_buf_entry_t *from = &dma->bufs[i];
- drm_freelist_t *list = &dma->bufs[i].freelist;
- if ( copy_to_user( &to->count,
- &from->buf_count,
- sizeof(from->buf_count) ) ||
- copy_to_user( &to->size,
- &from->buf_size,
- sizeof(from->buf_size) ) ||
- copy_to_user( &to->low_mark,
- &list->low_mark,
- sizeof(list->low_mark) ) ||
- copy_to_user( &to->high_mark,
- &list->high_mark,
- sizeof(list->high_mark) ) )
- return -EFAULT;
-
- DRM_DEBUG( "%d %d %d %d %d\n",
- i,
- dma->bufs[i].buf_count,
- dma->bufs[i].buf_size,
- dma->bufs[i].freelist.low_mark,
- dma->bufs[i].freelist.high_mark );
- ++count;
- }
- }
- }
- request.count = count;
-
- if ( copy_to_user( argp, &request, sizeof(request) ) )
- return -EFAULT;
-
- return 0;
-}
-
-/**
- * Specifies a low and high water mark for buffer allocation
- *
- * \param inode device inode.
- * \param filp file pointer.
- * \param cmd command.
- * \param arg a pointer to a drm_buf_desc structure.
- * \return zero on success or a negative number on failure.
- *
- * Verifies that the size order is bounded between the admissible orders and
- * updates the respective drm_device_dma::bufs entry low and high water mark.
- *
- * \note This ioctl is deprecated and mostly never used.
- */
-int DRM(markbufs)( 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;
- int order;
- drm_buf_entry_t *entry;
-
- if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA))
- return -EINVAL;
-
- if ( !dma ) return -EINVAL;
-
- if ( copy_from_user( &request,
- (drm_buf_desc_t __user *)arg,
- sizeof(request) ) )
- return -EFAULT;
-
- DRM_DEBUG( "%d, %d, %d\n",
- request.size, request.low_mark, request.high_mark );
- order = DRM(order)( request.size );
- if ( order < DRM_MIN_ORDER || order > DRM_MAX_ORDER ) return -EINVAL;
- entry = &dma->bufs[order];
-
- if ( request.low_mark < 0 || request.low_mark > entry->buf_count )
- return -EINVAL;
- if ( request.high_mark < 0 || request.high_mark > entry->buf_count )
- return -EINVAL;
-
- entry->freelist.low_mark = request.low_mark;
- entry->freelist.high_mark = request.high_mark;
-
- return 0;
-}
-
-/**
- * Unreserve the buffers in list, previously reserved using drmDMA.
- *
- * \param inode device inode.
- * \param filp file pointer.
- * \param cmd command.
- * \param arg pointer to a drm_buf_free structure.
- * \return zero on success or a negative number on failure.
- *
- * Calls free_buffer() for each used buffer.
- * This function is primarily used for debugging.
- */
-int DRM(freebufs)( 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_free_t request;
- int i;
- int idx;
- drm_buf_t *buf;
-
- if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA))
- return -EINVAL;
-
- if ( !dma ) return -EINVAL;
-
- if ( copy_from_user( &request,
- (drm_buf_free_t __user *)arg,
- sizeof(request) ) )
- return -EFAULT;
-
- DRM_DEBUG( "%d\n", request.count );
- for ( i = 0 ; i < request.count ; i++ ) {
- if ( copy_from_user( &idx,
- &request.list[i],
- sizeof(idx) ) )
- return -EFAULT;
- if ( idx < 0 || idx >= dma->buf_count ) {
- DRM_ERROR( "Index %d (of %d max)\n",
- idx, dma->buf_count - 1 );
- return -EINVAL;
- }
- buf = dma->buflist[idx];
- if ( buf->filp != filp ) {
- DRM_ERROR( "Process %d freeing buffer not owned\n",
- current->pid );
- return -EINVAL;
- }
- DRM(free_buffer)( dev, buf );
- }
-
- return 0;
-}
-
-/**
- * Maps all of the DMA buffers into client-virtual space (ioctl).
- *
- * \param inode device inode.
- * \param filp file pointer.
- * \param cmd command.
- * \param arg pointer to a drm_buf_map structure.
- * \return zero on success or a negative number on failure.
- *
- * Maps the AGP or SG buffer region with do_mmap(), and copies information
- * about each buffer into user space. The PCI buffers are already mapped on the
- * addbufs_pci() call.
- */
-int DRM(mapbufs)( 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_map_t __user *argp = (void __user *)arg;
- int retcode = 0;
- const int zero = 0;
- unsigned long virtual;
- unsigned long address;
- drm_buf_map_t request;
- int i;
-
- if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA))
- return -EINVAL;
-
- if ( !dma ) return -EINVAL;
-
- spin_lock( &dev->count_lock );
- if ( atomic_read( &dev->buf_alloc ) ) {
- spin_unlock( &dev->count_lock );
- return -EBUSY;
- }
- dev->buf_use++; /* Can't allocate more after this call */
- spin_unlock( &dev->count_lock );
-
- if ( copy_from_user( &request, argp, sizeof(request) ) )
- return -EFAULT;
-
- if ( request.count >= dma->buf_count ) {
- if ((drm_core_has_AGP(dev) && (dma->flags & _DRM_DMA_USE_AGP)) ||
- (drm_core_check_feature(dev, DRIVER_SG) && (dma->flags & _DRM_DMA_USE_SG)) ||
- (drm_core_check_feature(dev, DRIVER_FB_DMA) && (dma->flags & _DRM_DMA_USE_FB))) {
- drm_map_t *map = dev->agp_buffer_map;
-
- if ( !map ) {
- retcode = -EINVAL;
- goto done;
- }
-
-#if LINUX_VERSION_CODE <= 0x020402
- down( &current->mm->mmap_sem );
-#else
- down_write( &current->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( &current->mm->mmap_sem );
-#else
- up_write( &current->mm->mmap_sem );
-#endif
- } else {
-#if LINUX_VERSION_CODE <= 0x020402
- down( &current->mm->mmap_sem );
-#else
- down_write( &current->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( &current->mm->mmap_sem );
-#else
- up_write( &current->mm->mmap_sem );
-#endif
- }
- if ( virtual > -1024UL ) {
- /* Real error */
- retcode = (signed long)virtual;
- goto done;
- }
- request.virtual = (void __user *)virtual;
-
- for ( i = 0 ; i < dma->buf_count ; i++ ) {
- if ( copy_to_user( &request.list[i].idx,
- &dma->buflist[i]->idx,
- sizeof(request.list[0].idx) ) ) {
- retcode = -EFAULT;
- goto done;
- }
- if ( copy_to_user( &request.list[i].total,
- &dma->buflist[i]->total,
- sizeof(request.list[0].total) ) ) {
- retcode = -EFAULT;
- goto done;
- }
- if ( copy_to_user( &request.list[i].used,
- &zero,
- sizeof(zero) ) ) {
- retcode = -EFAULT;
- goto done;
- }
- address = virtual + dma->buflist[i]->offset; /* *** */
- if ( copy_to_user( &request.list[i].address,
- &address,
- sizeof(address) ) ) {
- retcode = -EFAULT;
- goto done;
- }
- }
- }
- done:
- request.count = dma->buf_count;
- DRM_DEBUG( "%d buffers, retcode = %d\n", request.count, retcode );
-
- if ( copy_to_user( argp, &request, sizeof(request) ) )
- return -EFAULT;
-
- return retcode;
-}
-