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Diffstat (limited to 'linux/mga_bufs.c')
-rw-r--r--linux/mga_bufs.c430
1 files changed, 217 insertions, 213 deletions
diff --git a/linux/mga_bufs.c b/linux/mga_bufs.c
index 34f1112a6..3ce428b27 100644
--- a/linux/mga_bufs.c
+++ b/linux/mga_bufs.c
@@ -33,169 +33,168 @@
#define __NO_VERSION__
#include "drmP.h"
#include "mga_drv.h"
-#include "mga_dma.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;
-
- copy_from_user_ret(&request,
- (drm_buf_desc_t *)arg,
- sizeof(request),
- -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: %d\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);
+ 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;
+
+ copy_from_user_ret(&request,
+ (drm_buf_desc_t *)arg,
+ sizeof(request),
+ -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 */
- }
+ 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->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;
+ 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;
-
- DRM_DEBUG("offset : %d\n", offset);
-
- 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);
+ 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;
+
+ DRM_DEBUG("offset : %ld\n", offset);
+
+ 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;
+ 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;
+ offset = offset + alignment;
+ entry->buf_count++;
+ byte_count += PAGE_SIZE << page_order;
- DRM_DEBUG("buffer %d @ %p\n",
- entry->buf_count, buf->address);
- }
+ DRM_DEBUG("buffer %d @ %p\n",
+ entry->buf_count, buf->address);
+ }
- 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->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->buf_count += entry->buf_count;
- DRM_DEBUG("dma->buf_count : %d\n", dma->buf_count);
+ DRM_DEBUG("dma->buf_count : %d\n", dma->buf_count);
- dma->byte_count += byte_count;
+ dma->byte_count += byte_count;
- DRM_DEBUG("entry->buf_count : %d\n", entry->buf_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]);
- }
+ 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);
+ up(&dev->struct_sem);
- request.count = entry->buf_count;
- request.size = size;
+ request.count = entry->buf_count;
+ request.size = size;
- copy_to_user_ret((drm_buf_desc_t *)arg,
- &request,
- sizeof(request),
- -EFAULT);
+ copy_to_user_ret((drm_buf_desc_t *)arg,
+ &request,
+ sizeof(request),
+ -EFAULT);
- atomic_dec(&dev->buf_alloc);
+ 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: %d\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);
+ 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;
+ dma->flags = _DRM_DMA_USE_AGP;
- DRM_DEBUG("dma->flags : %lx\n", dma->flags);
+ DRM_DEBUG("dma->flags : %x\n", dma->flags);
- return 0;
+ return 0;
}
int mga_addbufs_pci(struct inode *inode, struct file *filp, unsigned int cmd,
@@ -362,17 +361,17 @@ int mga_addbufs_pci(struct inode *inode, struct file *filp, unsigned int cmd,
int mga_addbufs(struct inode *inode, struct file *filp, unsigned int cmd,
unsigned long arg)
{
- drm_buf_desc_t request;
+ drm_buf_desc_t request;
- copy_from_user_ret(&request,
- (drm_buf_desc_t *)arg,
- sizeof(request),
- -EFAULT);
+ copy_from_user_ret(&request,
+ (drm_buf_desc_t *)arg,
+ sizeof(request),
+ -EFAULT);
- if(request.flags & _DRM_AGP_BUFFER)
- return mga_addbufs_agp(inode, filp, cmd, arg);
- else
- return mga_addbufs_pci(inode, filp, cmd, arg);
+ 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,
@@ -546,7 +545,7 @@ int mga_mapbufs(struct inode *inode, struct file *filp, unsigned int cmd,
spin_lock(&dev->count_lock);
if (atomic_read(&dev->buf_alloc)) {
spin_unlock(&dev->count_lock);
- DRM_DEBUG("Buzy\n");
+ DRM_DEBUG("Busy\n");
return -EBUSY;
}
++dev->buf_use; /* Can't allocate more after this call */
@@ -558,79 +557,84 @@ int mga_mapbufs(struct inode *inode, struct file *filp, unsigned int cmd,
-EFAULT);
DRM_DEBUG("mga_mapbufs\n");
- DRM_DEBUG("dma->flags : %lx\n", dma->flags);
+ DRM_DEBUG("dma->flags : %x\n", dma->flags);
- 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;
+ 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) {
- DRM_DEBUG("map is null\n");
- 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 : %lx\n", map->handle);
- DRM_DEBUG("map->mtrr : %d\n", map->mtrr);
-
- virtual = do_mmap(filp, 0, map->size, PROT_READ|PROT_WRITE,
- MAP_SHARED, (unsigned long)map->offset);
- } else {
- virtual = do_mmap(filp, 0, dma->byte_count,
- PROT_READ|PROT_WRITE, MAP_SHARED, 0);
- }
- if (virtual > -1024UL) {
- /* Real error */
- DRM_DEBUG("mmap error\n");
- retcode = (signed long)virtual;
- goto done;
- }
- request.virtual = (void *)virtual;
+ map = dev->maplist[dev_priv->buffer_map_idx];
+ if (!map) {
+ DRM_DEBUG("map is null\n");
+ 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(&current->mm->mmap_sem);
+ virtual = do_mmap(filp, 0, map->size,
+ PROT_READ|PROT_WRITE,
+ MAP_SHARED,
+ (unsigned long)map->offset);
+ up(&current->mm->mmap_sem);
+ } else {
+ down(&current->mm->mmap_sem);
+ virtual = do_mmap(filp, 0, dma->byte_count,
+ PROT_READ|PROT_WRITE, MAP_SHARED, 0);
+ up(&current->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);
+ 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);
- copy_to_user_ret((drm_buf_map_t *)arg,
- &request,
- sizeof(request),
- -EFAULT);
+ copy_to_user_ret((drm_buf_map_t *)arg,
+ &request,
+ sizeof(request),
+ -EFAULT);
- DRM_DEBUG("retcode : %d\n", retcode);
+ DRM_DEBUG("retcode : %d\n", retcode);
- return retcode;
+ return retcode;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-21 17:06:18 +0000