diff options
Diffstat (limited to 'linux/mga_bufs.c')
| -rw-r--r-- | linux/mga_bufs.c | 612 |
1 files changed, 0 insertions, 612 deletions
diff --git a/linux/mga_bufs.c b/linux/mga_bufs.c deleted file mode 100644 index 05d941b4..00000000 --- a/linux/mga_bufs.c +++ /dev/null @@ -1,612 +0,0 @@ -/* mga_bufs.c -- IOCTLs to manage buffers -*- linux-c -*- - * Created: Thu Jan 6 01:47:26 2000 by jhartmann@precisioninsight.com - * - * Copyright 1999 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 - * PRECISION INSIGHT 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> - * Jeff Hartmann <jhartmann@valinux.com> - * - */ - -#define __NO_VERSION__ -#include "drmP.h" -#include "mga_drv.h" -#include "linux/un.h" - - -int mga_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; - - 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; - agp_offset = request.agp_start; - 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; - - 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); - DRM_DEBUG("byte_count: %d\n", byte_count); - - 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 = offset; /* Hrm */ - buf->bus_address = dev->agp->base + agp_offset + offset; - buf->address = (void *)(agp_offset + offset + dev->agp->base); - buf->next = NULL; - buf->waiting = 0; - buf->pending = 0; - init_waitqueue_head(&buf->dma_wait); - buf->pid = 0; - - buf->dev_private = drm_alloc(sizeof(drm_mga_buf_priv_t), - DRM_MEM_BUFS); - buf->dev_priv_size = sizeof(drm_mga_buf_priv_t); - -#if DRM_DMA_HISTOGRAM - buf->time_queued = 0; - buf->time_dispatched = 0; - buf->time_completed = 0; - buf->time_freed = 0; -#endif - offset = offset + alignment; - entry->buf_count++; - byte_count += PAGE_SIZE << page_order; - } - - 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 = dma->buf_count; i < dma->buf_count + entry->buf_count; i++) - dma->buflist[i] = &entry->buflist[i - dma->buf_count]; - - dma->buf_count += entry->buf_count; - - DRM_DEBUG("dma->buf_count : %d\n", dma->buf_count); - - dma->byte_count += byte_count; - - DRM_DEBUG("entry->buf_count : %d\n", entry->buf_count); - - 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]); - } - - 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; - - atomic_dec(&dev->buf_alloc); - - 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); - DRM_DEBUG("byte_count: %d\n", byte_count); - - dma->flags = _DRM_DMA_USE_AGP; - - DRM_DEBUG("dma->flags : %x\n", dma->flags); - - return 0; -} - -int mga_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; - - 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; - - 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 */ - } - - 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)); - - dma->pagelist = drm_realloc(dma->pagelist, - dma->page_count * sizeof(*dma->pagelist), - (dma->page_count + (count << page_order)) - * sizeof(*dma->pagelist), - DRM_MEM_PAGES); - 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) { - if (!(page = drm_alloc_pages(page_order, DRM_MEM_DMA))) break; - 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); - dma->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->next = NULL; - buf->waiting = 0; - buf->pending = 0; - init_waitqueue_head(&buf->dma_wait); - buf->pid = 0; -#if DRM_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); - } - byte_count += PAGE_SIZE << page_order; - } - - 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 = dma->buf_count; i < dma->buf_count + entry->buf_count; i++) - dma->buflist[i] = &entry->buflist[i - dma->buf_count]; - - 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); - - 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]); - } - - 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; - - atomic_dec(&dev->buf_alloc); - return 0; -} - -int mga_addbufs(struct inode *inode, struct file *filp, unsigned int cmd, - unsigned long arg) -{ - drm_buf_desc_t request; - - if (copy_from_user(&request, - (drm_buf_desc_t *)arg, - sizeof(request))) - return -EFAULT; - - if(request.flags & _DRM_AGP_BUFFER) - return mga_addbufs_agp(inode, filp, cmd, arg); - else - return mga_addbufs_pci(inode, filp, cmd, arg); -} - -int mga_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; - int i; - int count; - - 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, - (drm_buf_info_t *)arg, - sizeof(request))) - return -EFAULT; - - for (i = 0, count = 0; i < DRM_MAX_ORDER+1; i++) { - if (dma->bufs[i].buf_count) ++count; - } - - if (request.count >= count) { - for (i = 0, count = 0; i < DRM_MAX_ORDER+1; i++) { - if (dma->bufs[i].buf_count) { - if (copy_to_user(&request.list[count].count, - &dma->bufs[i].buf_count, - sizeof(dma->bufs[0] - .buf_count)) || - copy_to_user(&request.list[count].size, - &dma->bufs[i].buf_size, - sizeof(dma->bufs[0].buf_size)) || - copy_to_user(&request.list[count].low_mark, - &dma->bufs[i] - .freelist.low_mark, - sizeof(dma->bufs[0] - .freelist.low_mark)) || - copy_to_user(&request.list[count] - .high_mark, - &dma->bufs[i] - .freelist.high_mark, - sizeof(dma->bufs[0] - .freelist.high_mark))) - return -EFAULT; - ++count; - } - } - } - request.count = count; - - if (copy_to_user((drm_buf_info_t *)arg, - &request, - sizeof(request))) - return -EFAULT; - - return 0; -} - -int mga_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 (!dma) return -EINVAL; - - if (copy_from_user(&request, (drm_buf_desc_t *)arg, sizeof(request))) - return -EFAULT; - - 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; -} - -int mga_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 (!dma) return -EINVAL; - - if (copy_from_user(&request, - (drm_buf_free_t *)arg, - sizeof(request))) - return -EFAULT; - - 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->pid != current->pid) { - DRM_ERROR("Process %d freeing buffer owned by %d\n", - current->pid, buf->pid); - return -EINVAL; - } - drm_free_buffer(dev, buf); - } - - return 0; -} - -int mga_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; - int retcode = 0; - const int zero = 0; - unsigned long virtual; - unsigned long address; - drm_buf_map_t request; - int i; - - 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, - (drm_buf_map_t *)arg, - sizeof(request))) - return -EFAULT; - - if (request.count >= dma->buf_count) { - if(dma->flags & _DRM_DMA_USE_AGP) { - drm_mga_private_t *dev_priv = dev->dev_private; - drm_map_t *map = NULL; - - map = dev->maplist[dev_priv->buffer_map_idx]; - if (!map) { - retcode = -EINVAL; - goto done; - } - - DRM_DEBUG("map->offset : %lx\n", map->offset); - DRM_DEBUG("map->size : %lx\n", map->size); - DRM_DEBUG("map->type : %d\n", map->type); - DRM_DEBUG("map->flags : %x\n", map->flags); - DRM_DEBUG("map->handle : %p\n", map->handle); - DRM_DEBUG("map->mtrr : %d\n", map->mtrr); - down(¤t->mm->mmap_sem); - virtual = do_mmap(filp, 0, map->size, - PROT_READ|PROT_WRITE, - MAP_SHARED, - (unsigned long)map->offset); - up(¤t->mm->mmap_sem); - } else { - down(¤t->mm->mmap_sem); - virtual = do_mmap(filp, 0, dma->byte_count, - PROT_READ|PROT_WRITE, MAP_SHARED, 0); - up(¤t->mm->mmap_sem); - } - if (virtual > -1024UL) { - /* Real error */ - DRM_DEBUG("mmap error\n"); - retcode = (signed long)virtual; - goto done; - } - request.virtual = (void *)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((drm_buf_map_t *)arg, - &request, - sizeof(request))) - return -EFAULT; - - DRM_DEBUG("retcode : %d\n", retcode); - - return retcode; -} |