445 lines
12 KiB
C
445 lines
12 KiB
C
/* i810_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.
|
|
* 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@precisioninsight.com>
|
|
* Jeff Hartmann <jhartmann@precisioninsight.com>
|
|
*
|
|
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/i810_bufs.c,v 1.1 2000/02/11 17:26:04 dawes Exp $
|
|
*
|
|
*/
|
|
|
|
#define __NO_VERSION__
|
|
#include "drmP.h"
|
|
#include "i810_drv.h"
|
|
#include "linux/un.h"
|
|
|
|
int i810_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;
|
|
|
|
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;
|
|
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_i810_buf_priv_t),
|
|
DRM_MEM_BUFS);
|
|
buf->dev_priv_size = sizeof(drm_i810_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;
|
|
|
|
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->buf_count += entry->buf_count;
|
|
dma->byte_count += byte_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;
|
|
|
|
copy_to_user_ret((drm_buf_desc_t *)arg,
|
|
&request,
|
|
sizeof(request),
|
|
-EFAULT);
|
|
|
|
atomic_dec(&dev->buf_alloc);
|
|
dma->flags = _DRM_DMA_USE_AGP;
|
|
return 0;
|
|
}
|
|
|
|
int i810_addbufs(struct inode *inode, struct file *filp, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
drm_buf_desc_t request;
|
|
|
|
copy_from_user_ret(&request,
|
|
(drm_buf_desc_t *)arg,
|
|
sizeof(request),
|
|
-EFAULT);
|
|
|
|
if(request.flags & _DRM_AGP_BUFFER)
|
|
return i810_addbufs_agp(inode, filp, cmd, arg);
|
|
else
|
|
return -EINVAL;
|
|
}
|
|
|
|
int i810_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);
|
|
|
|
copy_from_user_ret(&request,
|
|
(drm_buf_info_t *)arg,
|
|
sizeof(request),
|
|
-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) {
|
|
copy_to_user_ret(&request.list[count].count,
|
|
&dma->bufs[i].buf_count,
|
|
sizeof(dma->bufs[0]
|
|
.buf_count),
|
|
-EFAULT);
|
|
copy_to_user_ret(&request.list[count].size,
|
|
&dma->bufs[i].buf_size,
|
|
sizeof(dma->bufs[0].buf_size),
|
|
-EFAULT);
|
|
copy_to_user_ret(&request.list[count].low_mark,
|
|
&dma->bufs[i]
|
|
.freelist.low_mark,
|
|
sizeof(dma->bufs[0]
|
|
.freelist.low_mark),
|
|
-EFAULT);
|
|
copy_to_user_ret(&request.list[count]
|
|
.high_mark,
|
|
&dma->bufs[i]
|
|
.freelist.high_mark,
|
|
sizeof(dma->bufs[0]
|
|
.freelist.high_mark),
|
|
-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;
|
|
|
|
copy_to_user_ret((drm_buf_info_t *)arg,
|
|
&request,
|
|
sizeof(request),
|
|
-EFAULT);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int i810_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;
|
|
|
|
copy_from_user_ret(&request,
|
|
(drm_buf_desc_t *)arg,
|
|
sizeof(request),
|
|
-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;
|
|
}
|
|
|
|
int i810_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;
|
|
|
|
copy_from_user_ret(&request,
|
|
(drm_buf_free_t *)arg,
|
|
sizeof(request),
|
|
-EFAULT);
|
|
|
|
DRM_DEBUG("%d\n", request.count);
|
|
for (i = 0; i < request.count; i++) {
|
|
copy_from_user_ret(&idx,
|
|
&request.list[i],
|
|
sizeof(idx),
|
|
-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 i810_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;
|
|
|
|
DRM_DEBUG("\n");
|
|
|
|
spin_lock(&dev->count_lock);
|
|
if (atomic_read(&dev->buf_alloc)) {
|
|
spin_unlock(&dev->count_lock);
|
|
DRM_DEBUG("Busy\n");
|
|
return -EBUSY;
|
|
}
|
|
++dev->buf_use; /* Can't allocate more after this call */
|
|
spin_unlock(&dev->count_lock);
|
|
|
|
copy_from_user_ret(&request,
|
|
(drm_buf_map_t *)arg,
|
|
sizeof(request),
|
|
-EFAULT);
|
|
DRM_DEBUG("dma->flags : %lx\n", dma->flags);
|
|
if (request.count >= dma->buf_count) {
|
|
if(dma->flags & _DRM_DMA_USE_AGP) {
|
|
drm_i810_private_t *dev_priv =
|
|
(drm_i810_private_t *)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);
|
|
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);
|
|
|
|
copy_to_user_ret((drm_buf_map_t *)arg,
|
|
&request,
|
|
sizeof(request),
|
|
-EFAULT);
|
|
|
|
DRM_DEBUG("retcode : %d\n", retcode);
|
|
return retcode;
|
|
}
|