diff options
Diffstat (limited to 'bsd/drm_bufs.h')
| -rw-r--r-- | bsd/drm_bufs.h | 961 |
1 files changed, 0 insertions, 961 deletions
diff --git a/bsd/drm_bufs.h b/bsd/drm_bufs.h deleted file mode 100644 index d27254c2..00000000 --- a/bsd/drm_bufs.h +++ /dev/null @@ -1,961 +0,0 @@ -/* drm_bufs.h -- Generic buffer template -*- linux-c -*- - * 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. - * - * Authors: - * Rickard E. (Rik) Faith <faith@valinux.com> - * Gareth Hughes <gareth@valinux.com> - * - */ - -#include "drmP.h" - -#ifndef __HAVE_PCI_DMA -#define __HAVE_PCI_DMA 0 -#endif - -#ifndef __HAVE_SG -#define __HAVE_SG 0 -#endif - -/* - * Compute order. Can be made faster. - */ -int DRM(order)( unsigned long size ) -{ - int order; - unsigned long tmp; - - for ( order = 0, tmp = size ; tmp >>= 1 ; ++order ); - - if ( size & ~(1 << order) ) - ++order; - - return order; -} - -int DRM(addmap)( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_map_t request; - drm_local_map_t *map; - drm_map_list_entry_t *list; - - if (!(dev->flags & (FREAD|FWRITE))) - return DRM_ERR(EACCES); /* Require read/write */ - - DRM_COPY_FROM_USER_IOCTL( request, (drm_map_t *)data, sizeof(drm_map_t) ); - - map = (drm_local_map_t *) DRM(alloc)( sizeof(*map), DRM_MEM_MAPS ); - if ( !map ) - return DRM_ERR(ENOMEM); - - map->offset = request.offset; - map->size = request.size; - map->type = request.type; - map->flags = request.flags; - map->mtrr = 0; - map->handle = 0; - - /* 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 DRM_ERR(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 DRM_ERR(EINVAL); - } - if (map->offset + map->size < map->offset) { - DRM(free)(map, sizeof(*map), DRM_MEM_MAPS); - return DRM_ERR(EINVAL); - } - - switch ( map->type ) { - case _DRM_REGISTERS: - drm_core_ioremap(map, dev); - if (!(map->flags & _DRM_WRITE_COMBINING)) - break; - /* FALLTHROUGH */ - case _DRM_FRAME_BUFFER: -#if __REALLY_HAVE_MTRR - if (DRM(mtrr_add)(map->offset, map->size, DRM_MTRR_WC) == 0) - map->mtrr = 1; -#endif - break; - case _DRM_SHM: - map->handle = (void *)DRM(alloc)(map->size, DRM_MEM_SAREA); - 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 DRM_ERR(ENOMEM); - } - map->offset = (unsigned long)map->handle; - if ( map->flags & _DRM_CONTAINS_LOCK ) { - /* Prevent a 2nd X Server from creating a 2nd lock */ - DRM_LOCK(); - if (dev->lock.hw_lock != NULL) { - DRM_UNLOCK(); - DRM(free)(map->handle, map->size, - DRM_MEM_SAREA); - DRM(free)(map, sizeof(*map), DRM_MEM_MAPS); - return DRM_ERR(EBUSY); - } - dev->lock.hw_lock = map->handle; /* Pointer to lock */ - DRM_UNLOCK(); - } - break; -#if __REALLY_HAVE_AGP - case _DRM_AGP: - map->offset += dev->agp->base; - map->mtrr = dev->agp->mtrr; /* for getmap */ - break; -#endif - case _DRM_SCATTER_GATHER: - if (!dev->sg) { - DRM(free)(map, sizeof(*map), DRM_MEM_MAPS); - return DRM_ERR(EINVAL); - } - map->offset = map->offset + dev->sg->handle; - break; - - default: - DRM(free)( map, sizeof(*map), DRM_MEM_MAPS ); - return DRM_ERR(EINVAL); - } - - list = DRM(calloc)(1, sizeof(*list), DRM_MEM_MAPS); - if (list == NULL) { - DRM(free)(map, sizeof(*map), DRM_MEM_MAPS); - return DRM_ERR(EINVAL); - } - list->map = map; - - DRM_LOCK(); - TAILQ_INSERT_TAIL(dev->maplist, list, link); - DRM_UNLOCK(); - - request.offset = map->offset; - request.size = map->size; - request.type = map->type; - request.flags = map->flags; - request.mtrr = map->mtrr; - request.handle = map->handle; - - if ( request.type != _DRM_SHM ) { - request.handle = (void *)request.offset; - } - - DRM_COPY_TO_USER_IOCTL( (drm_map_t *)data, request, sizeof(drm_map_t) ); - - return 0; -} - - -/* Remove a map private from list and deallocate resources if the mapping - * isn't in use. - */ - -int DRM(rmmap)( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_map_list_entry_t *list; - drm_local_map_t *map; - drm_map_t request; - - DRM_COPY_FROM_USER_IOCTL( request, (drm_map_t *)data, sizeof(request) ); - - DRM_LOCK(); - TAILQ_FOREACH(list, dev->maplist, link) { - map = list->map; - if (map->handle == request.handle && - map->flags & _DRM_REMOVABLE) - break; - } - - /* No match found. */ - if (list == NULL) { - DRM_UNLOCK(); - return DRM_ERR(EINVAL); - } - TAILQ_REMOVE(dev->maplist, list, link); - DRM_UNLOCK(); - - DRM(free)(list, sizeof(*list), DRM_MEM_MAPS); - - switch (map->type) { - case _DRM_REGISTERS: - case _DRM_FRAME_BUFFER: -#if __REALLY_HAVE_MTRR - if (map->mtrr) { - int __unused retcode; - - retcode = DRM(mtrr_del)(map->offset, map->size, - DRM_MTRR_WC); - DRM_DEBUG("mtrr_del = %d\n", retcode); - } -#endif - DRM(ioremapfree)(map); - break; - case _DRM_SHM: - DRM(free)(map->handle, map->size, DRM_MEM_SAREA); - break; - case _DRM_AGP: - case _DRM_SCATTER_GATHER: - break; - } - DRM(free)(map, sizeof(*map), DRM_MEM_MAPS); - return 0; -} - -#if __HAVE_DMA - - -static void DRM(cleanup_buf_error)(drm_device_t *dev, drm_buf_entry_t *entry) -{ - int i; - -#if __HAVE_PCI_DMA - if (entry->seg_count) { - for (i = 0; i < entry->seg_count; i++) { - if (entry->seglist[i] != 0) - DRM(pci_free)(dev, entry->buf_size, - (void *)entry->seglist[i], - entry->seglist_bus[i]); - } - DRM(free)(entry->seglist, - entry->seg_count * - sizeof(*entry->seglist), - DRM_MEM_SEGS); - DRM(free)(entry->seglist_bus, entry->seg_count * - sizeof(*entry->seglist_bus), DRM_MEM_SEGS); - - entry->seg_count = 0; - } -#endif /* __HAVE_PCI_DMA */ - - if (entry->buf_count) { - for (i = 0; i < entry->buf_count; i++) { - 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 __REALLY_HAVE_AGP -static int DRM(addbufs_agp)(drm_device_t *dev, drm_buf_desc_t *request) -{ - drm_device_dma_t *dma = dev->dma; - 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; - - count = request->count; - order = DRM(order)(request->size); - size = 1 << order; - - alignment = (request->flags & _DRM_PAGE_ALIGN) - ? round_page(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: 0x%lx\n", agp_offset ); - DRM_DEBUG( "alignment: %d\n", alignment ); - DRM_DEBUG( "page_order: %d\n", page_order ); - DRM_DEBUG( "total: %d\n", total ); - - entry = &dma->bufs[order]; - - entry->buflist = DRM(alloc)( count * sizeof(*entry->buflist), - DRM_MEM_BUFS ); - if ( !entry->buflist ) { - return DRM_ERR(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->pending = 0; - buf->filp = NULL; - - buf->dev_priv_size = dev->dev_priv_size; - buf->dev_private = DRM(calloc)(1, buf->dev_priv_size, - DRM_MEM_BUFS); - if (buf->dev_private == NULL) { - /* Set count correctly so we free the proper amount. */ - entry->buf_count = count; - DRM(cleanup_buf_error)(dev, entry); - return DRM_ERR(ENOMEM); - } - - 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 == NULL) { - /* Free the entry because it isn't valid */ - DRM(cleanup_buf_error)(dev, entry); - return DRM_ERR(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 ); - - request->count = entry->buf_count; - request->size = size; - - dma->flags = _DRM_DMA_USE_AGP; - - return 0; -} -#endif /* __REALLY_HAVE_AGP */ - -#if __HAVE_PCI_DMA -static int DRM(addbufs_pci)(drm_device_t *dev, drm_buf_desc_t *request) -{ - drm_device_dma_t *dma = dev->dma; - int count; - int order; - int size; - int total; - int page_order; - drm_buf_entry_t *entry; - vm_offset_t vaddr; - 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; - dma_addr_t bus_addr; - - count = request->count; - order = DRM(order)(request->size); - size = 1 << order; - - DRM_DEBUG( "count=%d, size=%d (%d), order=%d\n", - request->count, request->size, size, order ); - - alignment = (request->flags & _DRM_PAGE_ALIGN) - ? round_page(size) : size; - page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0; - total = PAGE_SIZE << page_order; - - entry = &dma->bufs[order]; - - entry->buflist = DRM(alloc)(count * sizeof(*entry->buflist), - DRM_MEM_BUFS); - entry->seglist = DRM(alloc)(count * sizeof(*entry->seglist), - DRM_MEM_SEGS); - entry->seglist_bus = DRM(alloc)(count * sizeof(*entry->seglist_bus), - DRM_MEM_SEGS); - - /* 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 (entry->buflist == NULL || entry->seglist == NULL || - temp_pagelist == NULL) { - DRM(free)(entry->buflist, count * sizeof(*entry->buflist), - DRM_MEM_BUFS); - DRM(free)(entry->seglist, count * sizeof(*entry->seglist), - DRM_MEM_SEGS); - DRM(free)(entry->seglist_bus, count * - sizeof(*entry->seglist_bus), DRM_MEM_SEGS); - return DRM_ERR(ENOMEM); - } - - bzero(entry->buflist, count * sizeof(*entry->buflist)); - bzero(entry->seglist, count * sizeof(*entry->seglist)); - - 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 ) { - vaddr = (vm_offset_t) DRM(pci_alloc)(dev, size, alignment, - 0xfffffffful, &bus_addr); - if (vaddr == 0) { - /* 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); - return DRM_ERR(ENOMEM); - } - - entry->seglist_bus[entry->seg_count] = bus_addr; - entry->seglist[entry->seg_count++] = vaddr; - for ( i = 0 ; i < (1 << page_order) ; i++ ) { - DRM_DEBUG( "page %d @ 0x%08lx\n", - dma->page_count + page_count, - (long)vaddr + PAGE_SIZE * i ); - temp_pagelist[dma->page_count + page_count++] = - vaddr + 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 *)(vaddr + offset); - buf->bus_address = bus_addr + offset; - buf->next = NULL; - buf->pending = 0; - 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 == NULL) { - /* 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 ); - return DRM_ERR(ENOMEM); - } - bzero(buf->dev_private, 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 == NULL) { - /* 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); - return DRM_ERR(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. - */ - 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); - - request->count = entry->buf_count; - request->size = size; - - return 0; - -} -#endif /* __HAVE_PCI_DMA */ - -#if __REALLY_HAVE_SG -static int DRM(addbufs_sg)(drm_device_t *dev, drm_buf_desc_t *request) -{ - drm_device_dma_t *dma = dev->dma; - 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; - - count = request->count; - order = DRM(order)(request->size); - size = 1 << order; - - alignment = (request->flags & _DRM_PAGE_ALIGN) - ? round_page(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 ); - - entry = &dma->bufs[order]; - - entry->buflist = DRM(calloc)(1, count * sizeof(*entry->buflist), - DRM_MEM_BUFS); - if (entry->buflist == NULL) - return DRM_ERR(ENOMEM); - - 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->pending = 0; - buf->filp = NULL; - - buf->dev_priv_size = dev->dev_priv_size; - buf->dev_private = DRM(calloc)(1, buf->dev_priv_size, - DRM_MEM_BUFS); - if (buf->dev_private == NULL) { - /* Set count correctly so we free the proper amount. */ - entry->buf_count = count; - DRM(cleanup_buf_error)(dev, entry); - return DRM_ERR(ENOMEM); - } - - 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 == NULL) { - /* Free the entry because it isn't valid */ - DRM(cleanup_buf_error)(dev, entry); - return DRM_ERR(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 ); - - request->count = entry->buf_count; - request->size = size; - - dma->flags = _DRM_DMA_USE_SG; - - return 0; -} -#endif /* __REALLY_HAVE_SG */ - -int DRM(addbufs)( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_buf_desc_t request; - int err; - int order; - - DRM_COPY_FROM_USER_IOCTL( request, (drm_buf_desc_t *)data, sizeof(request) ); - - if (request.count < 0 || request.count > 4096) - return DRM_ERR(EINVAL); - - order = DRM(order)(request.size); - if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) - return DRM_ERR(EINVAL); - - DRM_SPINLOCK(&dev->dma_lock); - /* No more allocations after first buffer-using ioctl. */ - if (dev->buf_use != 0) { - DRM_SPINUNLOCK(&dev->dma_lock); - return DRM_ERR(EBUSY); - } - /* No more than one allocation per order */ - if (dev->dma->bufs[order].buf_count != 0) { - DRM_SPINUNLOCK(&dev->dma_lock); - return DRM_ERR(ENOMEM); - } - -#if __REALLY_HAVE_AGP - if ( request.flags & _DRM_AGP_BUFFER ) - err = DRM(addbufs_agp)(dev, &request); - else -#endif -#if __REALLY_HAVE_SG - if ( request.flags & _DRM_SG_BUFFER ) - err = DRM(addbufs_sg)(dev, &request); - else -#endif -#if __HAVE_PCI_DMA - err = DRM(addbufs_pci)(dev, &request); -#else - err = DRM_ERR(EINVAL); -#endif - DRM_SPINUNLOCK(&dev->dma_lock); - - DRM_COPY_TO_USER_IOCTL((drm_buf_desc_t *)data, request, sizeof(request)); - - return err; -} - -int DRM(infobufs)( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_device_dma_t *dma = dev->dma; - drm_buf_info_t request; - int i; - int count; - int retcode = 0; - - DRM_COPY_FROM_USER_IOCTL( request, (drm_buf_info_t *)data, sizeof(request) ); - - DRM_SPINLOCK(&dev->dma_lock); - ++dev->buf_use; /* Can't allocate more after this call */ - DRM_SPINUNLOCK(&dev->dma_lock); - - 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 from; - - from.count = dma->bufs[i].buf_count; - from.size = dma->bufs[i].buf_size; - from.low_mark = dma->bufs[i].freelist.low_mark; - from.high_mark = dma->bufs[i].freelist.high_mark; - - if (DRM_COPY_TO_USER(&request.list[count], &from, - sizeof(drm_buf_desc_t)) != 0) { - retcode = DRM_ERR(EFAULT); - break; - } - - 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; - - DRM_COPY_TO_USER_IOCTL( (drm_buf_info_t *)data, request, sizeof(request) ); - - return retcode; -} - -int DRM(markbufs)( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_device_dma_t *dma = dev->dma; - drm_buf_desc_t request; - int order; - - DRM_COPY_FROM_USER_IOCTL( request, (drm_buf_desc_t *)data, sizeof(request) ); - - 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 || - request.low_mark < 0 || request.high_mark < 0) { - return DRM_ERR(EINVAL); - } - - DRM_SPINLOCK(&dev->dma_lock); - if (request.low_mark > dma->bufs[order].buf_count || - request.high_mark > dma->bufs[order].buf_count) { - return DRM_ERR(EINVAL); - } - - dma->bufs[order].freelist.low_mark = request.low_mark; - dma->bufs[order].freelist.high_mark = request.high_mark; - DRM_SPINUNLOCK(&dev->dma_lock); - - return 0; -} - -int DRM(freebufs)( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_device_dma_t *dma = dev->dma; - drm_buf_free_t request; - int i; - int idx; - drm_buf_t *buf; - int retcode = 0; - - DRM_COPY_FROM_USER_IOCTL( request, (drm_buf_free_t *)data, sizeof(request) ); - - DRM_DEBUG( "%d\n", request.count ); - - DRM_SPINLOCK(&dev->dma_lock); - for ( i = 0 ; i < request.count ; i++ ) { - if (DRM_COPY_FROM_USER(&idx, &request.list[i], sizeof(idx))) { - retcode = DRM_ERR(EFAULT); - break; - } - if ( idx < 0 || idx >= dma->buf_count ) { - DRM_ERROR( "Index %d (of %d max)\n", - idx, dma->buf_count - 1 ); - retcode = DRM_ERR(EINVAL); - break; - } - buf = dma->buflist[idx]; - if ( buf->filp != filp ) { - DRM_ERROR("Process %d freeing buffer not owned\n", - DRM_CURRENTPID); - retcode = DRM_ERR(EINVAL); - break; - } - DRM(free_buffer)( dev, buf ); - } - DRM_SPINUNLOCK(&dev->dma_lock); - - return retcode; -} - -int DRM(mapbufs)( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_device_dma_t *dma = dev->dma; - int retcode = 0; - const int zero = 0; - vm_offset_t address; - struct vmspace *vms; -#ifdef __FreeBSD__ - vm_ooffset_t foff; - vm_size_t size; - vm_offset_t vaddr; -#endif /* __FreeBSD__ */ -#ifdef __NetBSD__ - struct vnode *vn; - vm_size_t size; - vaddr_t vaddr; -#endif /* __NetBSD__ */ - - drm_buf_map_t request; - int i; - - DRM_COPY_FROM_USER_IOCTL( request, (drm_buf_map_t *)data, sizeof(request) ); - -#ifdef __NetBSD__ - if (!vfinddev(kdev, VCHR, &vn)) - return 0; /* FIXME: Shouldn't this be EINVAL or something? */ -#endif /* __NetBSD__ */ - -#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 - vms = p->td_proc->p_vmspace; -#else - vms = p->p_vmspace; -#endif - - DRM_SPINLOCK(&dev->dma_lock); - dev->buf_use++; /* Can't allocate more after this call */ - DRM_SPINUNLOCK(&dev->dma_lock); - - if (request.count < dma->buf_count) - goto done; - - if ((__HAVE_AGP && (dma->flags & _DRM_DMA_USE_AGP)) || - (__HAVE_SG && (dma->flags & _DRM_DMA_USE_SG))) { - drm_local_map_t *map = dev->agp_buffer_map; - - if (map == NULL) { - retcode = EINVAL; - goto done; - } - size = round_page(map->size); - foff = map->offset; - } else { - size = round_page(dma->byte_count), - foff = 0; - } - -#ifdef __FreeBSD__ - vaddr = round_page((vm_offset_t)vms->vm_daddr + MAXDSIZ); - retcode = vm_mmap(&vms->vm_map, &vaddr, size, PROT_READ | PROT_WRITE, - VM_PROT_ALL, MAP_SHARED, SLIST_FIRST(&kdev->si_hlist), foff ); -#elif defined(__NetBSD__) - vaddr = round_page((vaddr_t)vms->vm_daddr + MAXDSIZ); - retcode = uvm_mmap(&vms->vm_map, &vaddr, size, - UVM_PROT_READ | UVM_PROT_WRITE, UVM_PROT_ALL, MAP_SHARED, - &vn->v_uobj, foff, p->p_rlimit[RLIMIT_MEMLOCK].rlim_cur); -#endif /* __NetBSD__ */ - if (retcode) - goto done; - - request.virtual = (void *)vaddr; - - for ( i = 0 ; i < dma->buf_count ; i++ ) { - if (DRM_COPY_TO_USER(&request.list[i].idx, - &dma->buflist[i]->idx, sizeof(request.list[0].idx))) { - retcode = EFAULT; - goto done; - } - if (DRM_COPY_TO_USER(&request.list[i].total, - &dma->buflist[i]->total, sizeof(request.list[0].total))) { - retcode = EFAULT; - goto done; - } - if (DRM_COPY_TO_USER(&request.list[i].used, &zero, - sizeof(zero))) { - retcode = EFAULT; - goto done; - } - address = vaddr + dma->buflist[i]->offset; /* *** */ - if (DRM_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 ); - - DRM_COPY_TO_USER_IOCTL((drm_buf_map_t *)data, request, sizeof(request)); - - return DRM_ERR(retcode); -} - -#endif /* __HAVE_DMA */ |