drm_bufs.c revision e92e3a8694f157faf8a9e44096a70ada86c556bf
/*
* 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>
*
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "drmP.h"
#define PAGE_MASK (PAGE_SIZE-1)
#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK)
/*
* 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_device_t *dev, unsigned long long offset, unsigned long size,
drm_map_type_t type, drm_map_flags_t flags, drm_local_map_t **map_ptr)
{
drm_local_map_t *map;
DRM_DEBUG("drm_addmap: offset = 0x%08llx, size = 0x%08lx, type = %d\n",
offset, size, type);
if (!(dev->flags & (FREAD|FWRITE)))
return (DRM_ERR(EACCES)); /* Require read/write */
/*
* 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 ((flags & _DRM_REMOVABLE) && type != _DRM_SHM)
return (DRM_ERR(EINVAL));
if ((offset & PAGE_MASK) || (size & PAGE_MASK))
return (DRM_ERR(EINVAL));
if (offset + size < offset)
return (DRM_ERR(EINVAL));
/*
* Check if this is just another version of a kernel-allocated map, and
* just hand that back if so.
*/
if (type == _DRM_REGISTERS || type == _DRM_FRAME_BUFFER ||
type == _DRM_SHM) {
DRM_LOCK();
TAILQ_FOREACH(map, &dev->maplist, link) {
if (map->type == type &&
map->offset.off == (u_offset_t)offset) {
map->size = size;
DRM_DEBUG("drm_addmap: Found kernel map %d\n",
type);
goto done;
}
}
DRM_UNLOCK();
}
/*
* Allocate a new map structure, fill it in, and do any type-specific
* initialization necessary.
*/
map = drm_alloc(sizeof (*map), DRM_MEM_MAPS);
if (!map)
return (DRM_ERR(ENOMEM));
map->offset.off = (u_offset_t)offset;
map->size = size;
map->type = type;
map->flags = flags;
DRM_DEBUG("drm_addmap: map->type = %x", map->type);
DRM_DEBUG("drm_addmap: map->size = %lx", map->size);
DRM_DEBUG("drm_addmap: map->offset.off = %llx", map->offset.off);
switch (map->type) {
case _DRM_REGISTERS:
DRM_DEBUG("drm_addmap: map the Registers");
(void) drm_ioremap(dev, map);
if (!(map->flags & _DRM_WRITE_COMBINING))
break;
/* FALLTHROUGH */
case _DRM_FRAME_BUFFER:
(void) drm_ioremap(dev, map);
break;
case _DRM_SHM:
map->handle = ddi_umem_alloc(map->size, DDI_UMEM_NOSLEEP,
&map->drm_umem_cookie);
DRM_DEBUG("drm_addmap: size=0x%lx drm_order(size)=%d "
"handle=0x%p\n",
(unsigned long) map->size,
drm_order(map->size), map->handle);
if (!map->handle) {
DRM_ERROR("drm_addmap: ddi_umem_alloc failed");
ddi_umem_free(map->drm_umem_cookie);
drm_free(map, sizeof (*map), DRM_MEM_MAPS);
return (DRM_ERR(ENOMEM));
}
/*
* record only low 32-bit of this handle, since 32-bit user
* app is incapable of passing in 64bit offset when doing mmap.
*/
map->offset.ptr = map->handle;
map->offset.off &= 0xffffffffUL;
DRM_DEBUG("drm_addmap: offset=0x%llx", map->offset);
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();
ddi_umem_free(map->drm_umem_cookie);
drm_free(map, sizeof (*map), DRM_MEM_MAPS);
return (DRM_ERR(EBUSY));
}
DRM_DEBUG("drm_addmap: map shm to hw_lock");
dev->lock.hw_lock = map->handle; /* Pointer to lock */
DRM_UNLOCK();
}
break;
case _DRM_SCATTER_GATHER:
if (!dev->sg) {
drm_free(map, sizeof (*map), DRM_MEM_MAPS);
return (DRM_ERR(EINVAL));
}
map->offset.off = map->offset.off + dev->sg->handle;
map->drm_umem_cookie = dev->sg->sg_umem_cookie;
break;
case _DRM_CONSISTENT:
break;
case _DRM_AGP:
break;
case _DRM_AGP_UMEM:
map->offset.off += dev->agp->base;
break;
default:
drm_free(map, sizeof (*map), DRM_MEM_MAPS);
return (DRM_ERR(EINVAL));
}
DRM_LOCK();
TAILQ_INSERT_TAIL(&dev->maplist, map, link);
done:
/* Jumped to, with lock held, when a kernel map is found. */
DRM_UNLOCK();
DRM_DEBUG("drm_addmap: Added map %d 0x%llx/0x%x\n",
map->type, map->offset, map->size);
*map_ptr = map;
TAILQ_FOREACH(map, &dev->maplist, link) {
DRM_DEBUG("type=%x, offset=%llx, size=%x",
map->type, map->offset, map->size);
}
return (0);
}
/*ARGSUSED*/
int
drm_addmap_ioctl(DRM_IOCTL_ARGS)
{
drm_map_t request;
drm_local_map_t *map;
int err;
DRM_DEVICE;
if (!(dev->flags & (FREAD|FWRITE)))
return (DRM_ERR(EACCES)); /* Require read/write */
if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
drm_map32_t request32;
DRM_COPY_FROM_USER_IOCTL(request32,
(drm_map32_t *)data,
sizeof (drm_map32_t));
request.offset = request32.offset;
request.size = request32.size;
request.type = request32.type;
request.flags = request32.flags;
request.handle = request32.handle;
request.mtrr = request32.mtrr;
} else
DRM_COPY_FROM_USER_IOCTL(request, (drm_map_t *)data,
sizeof (drm_map_t));
DRM_DEBUG("drm_addmap: request.offset=%llx, request.size=%lx,"
"request.type=%x", request.offset, request.size, request.type);
err = drm_addmap(dev, request.offset, request.size, request.type,
request.flags, &map);
if (err != 0)
return (err);
request.offset = map->offset.off;
request.size = map->size;
request.type = map->type;
request.flags = map->flags;
request.mtrr = map->mtrr;
request.handle = (unsigned long long)(uintptr_t)map->handle;
if (request.type != _DRM_SHM) {
request.handle = request.offset;
}
if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
drm_map32_t request32;
request32.offset = request.offset;
request32.size = request.size;
request32.type = request.type;
request32.flags = request.flags;
request32.handle = request.handle;
request32.mtrr = request.mtrr;
DRM_COPY_TO_USER_IOCTL((drm_map32_t *)data,
request32,
sizeof (drm_map32_t));
} else
DRM_COPY_TO_USER_IOCTL((drm_map_t *)data, request,
sizeof (drm_map_t));
return (0);
}
void
drm_rmmap(drm_device_t *dev, drm_local_map_t *map)
{
DRM_SPINLOCK_ASSERT(&dev->dev_lock);
TAILQ_REMOVE(&dev->maplist, map, link);
switch (map->type) {
case _DRM_REGISTERS:
drm_ioremapfree(map);
break;
/* FALLTHROUGH */
case _DRM_FRAME_BUFFER:
drm_ioremapfree(map);
break;
case _DRM_SHM:
ddi_umem_free(map->drm_umem_cookie);
break;
case _DRM_AGP:
case _DRM_SCATTER_GATHER:
break;
case _DRM_CONSISTENT:
break;
default:
DRM_ERROR("Bad map type %d\n", map->type);
break;
}
drm_free(map, sizeof (*map), DRM_MEM_MAPS);
}
/*
* Remove a map private from list and deallocate resources if the mapping
* isn't in use.
*/
/*ARGSUSED*/
int
drm_rmmap_ioctl(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_local_map_t *map;
drm_map_t request;
if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
drm_map32_t request32;
DRM_COPY_FROM_USER_IOCTL(request32,
(drm_map32_t *)data,
sizeof (drm_map32_t));
request.offset = request32.offset;
request.size = request32.size;
request.type = request32.type;
request.flags = request32.flags;
request.handle = request32.handle;
request.mtrr = request32.mtrr;
} else
DRM_COPY_FROM_USER_IOCTL(request, (drm_map_t *)data,
sizeof (request));
DRM_LOCK();
TAILQ_FOREACH(map, &dev->maplist, link) {
if (((unsigned long long)(uintptr_t)map->handle ==
request.handle) &&
(map->flags & _DRM_REMOVABLE))
break;
}
/* No match found. */
if (map == NULL) {
DRM_UNLOCK();
return (DRM_ERR(EINVAL));
}
drm_rmmap(dev, map);
DRM_UNLOCK();
return (0);
}
/*ARGSUSED*/
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_ERROR(
"drm_cleanup_buf_error: not implemented");
}
}
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;
}
}
/*ARGSUSED*/
int
drm_markbufs(DRM_IOCTL_ARGS)
{
DRM_DEBUG("drm_markbufs");
return (DRM_ERR(EINVAL));
}
/*ARGSUSED*/
int
drm_infobufs(DRM_IOCTL_ARGS)
{
DRM_DEBUG("drm_infobufs");
return (DRM_ERR(EINVAL));
}
static int
drm_do_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;
if (!dma)
return (DRM_ERR(EINVAL));
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("drm_do_addbufs_agp: count: %d\n", count);
DRM_DEBUG("drm_do_addbufs_agp: order: %d\n", order);
DRM_DEBUG("drm_do_addbufs_agp: size: %d\n", size);
DRM_DEBUG("drm_do_addbufs_agp: agp_offset: 0x%lx\n", agp_offset);
DRM_DEBUG("drm_do_addbufs_agp: alignment: %d\n", alignment);
DRM_DEBUG("drm_do_addbufs_agp: page_order: %d\n", page_order);
DRM_DEBUG("drm_do_addbufs_agp: 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));
}
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_alloc(count * sizeof (*entry->buflist),
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("drm_do_addbufs_agp: byte_count: %d\n", byte_count);
temp_buflist = drm_alloc(
(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_ERROR(" temp_buflist is NULL");
return (DRM_ERR(ENOMEM));
}
bcopy(temp_buflist, dma->buflist,
dma->buf_count * sizeof (*dma->buflist));
kmem_free(dma->buflist, dma->buf_count *sizeof (*dma->buflist));
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("drm_do_addbufs_agp: dma->buf_count : %d\n", dma->buf_count);
DRM_DEBUG("drm_do_addbufs_agp: entry->buf_count : %d\n",
entry->buf_count);
request->count = entry->buf_count;
request->size = size;
dma->flags = _DRM_DMA_USE_AGP;
DRM_DEBUG("drm_do_addbufs_agp: add bufs succesfful.");
return (0);
}
static int
drm_do_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_alloc(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_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;
drm_cleanup_buf_error(dev, entry);
return (DRM_ERR(ENOMEM));
}
DRM_DEBUG("drm_do_addbufs_sg: buffer %d @ %p\n",
entry->buf_count, buf->address);
offset += alignment;
entry->buf_count++;
byte_count += PAGE_SIZE << page_order;
}
DRM_DEBUG("drm_do_addbufs_sg: 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) {
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("drm_do_addbufs_sg: dma->buf_count: %d\n", dma->buf_count);
DRM_DEBUG("drm_do_addbufs_sg: entry->buf_count: %d\n",
entry->buf_count);
request->count = entry->buf_count;
request->size = size;
dma->flags = _DRM_DMA_USE_SG;
return (0);
}
int
drm_addbufs_agp(drm_device_t *dev, drm_buf_desc_t *request)
{
int order, ret;
DRM_SPINLOCK(&dev->dma_lock);
if (request->count < 0 || request->count > 4096) {
DRM_SPINLOCK(&dev->dma_lock);
return (DRM_ERR(EINVAL));
}
order = drm_order(request->size);
if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) {
DRM_SPINLOCK(&dev->dma_lock);
return (DRM_ERR(EINVAL));
}
/* 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));
}
ret = drm_do_addbufs_agp(dev, request);
DRM_SPINUNLOCK(&dev->dma_lock);
return (ret);
}
int
drm_addbufs_sg(drm_device_t *dev, drm_buf_desc_t *request)
{
int order, ret;
DRM_SPINLOCK(&dev->dma_lock);
if (request->count < 0 || request->count > 4096) {
DRM_SPINUNLOCK(&dev->dma_lock);
return (DRM_ERR(EINVAL));
}
order = drm_order(request->size);
if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) {
DRM_SPINUNLOCK(&dev->dma_lock);
return (DRM_ERR(EINVAL));
}
/* 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));
}
ret = drm_do_addbufs_sg(dev, request);
DRM_SPINUNLOCK(&dev->dma_lock);
return (ret);
}
/*ARGSUSED*/
int
drm_addbufs_ioctl(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_buf_desc_t request;
int err;
if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
drm_buf_desc32_t request32;
DRM_COPY_FROM_USER_IOCTL(request32,
(drm_buf_desc32_t *)data,
sizeof (drm_buf_desc32_t));
request.count = request32.count;
request.size = request32.size;
request.low_mark = request32.low_mark;
request.high_mark = request32.high_mark;
request.flags = request32.flags;
request.agp_start = request32.agp_start;
} else
DRM_COPY_FROM_USER_IOCTL(request, (drm_buf_desc_t *)data,
sizeof (request));
if (request.flags & _DRM_AGP_BUFFER)
err = drm_addbufs_agp(dev, &request);
else if (request.flags & _DRM_SG_BUFFER)
err = drm_addbufs_sg(dev, &request);
if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
drm_buf_desc32_t request32;
request32.count = request.count;
request32.size = request.size;
request32.low_mark = request.low_mark;
request32.high_mark = request.high_mark;
request32.flags = request.flags;
request32.agp_start = request.agp_start;
DRM_COPY_TO_USER_IOCTL((drm_buf_desc32_t *)data,
request32,
sizeof (drm_buf_desc32_t));
} else
DRM_COPY_TO_USER_IOCTL((drm_buf_desc_t *)data, request,
sizeof (request));
return (err);
}
/*ARGSUSED*/
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_DEBUG("drm_freebufs: ");
if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
drm_buf_free32_t request32;
DRM_COPY_FROM_USER_IOCTL(request32,
(drm_buf_free32_t *)data,
sizeof (drm_buf_free32_t));
request.count = request32.count;
request.list = (int __user *)(uintptr_t)request32.list;
} else
DRM_COPY_FROM_USER_IOCTL(request, (drm_buf_free_t *)data,
sizeof (request));
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("drm_freebufs: 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(
"drm_freebufs: process %d not owning the buffer.\n",
DRM_CURRENTPID);
retcode = DRM_ERR(EINVAL);
break;
}
drm_free_buffer(dev, buf);
}
return (retcode);
}
/*ARGSUSED*/
int
drm_mapbufs(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_buf_map_t request;
int i;
int retcode = 0;
const int zero = 0;
unsigned long vaddr;
unsigned long address;
drm_device_dma_t *dma = dev->dma;
int ret_tmp;
if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
drm_buf_map32_t request32;
DRM_COPY_FROM_USER_IOCTL(request32,
(drm_buf_map32_t *)data,
sizeof (drm_buf_map32_t));
request.count = request32.count;
request.virtual = (void __user *)(uintptr_t)request32.virtual;
request.list = (drm_buf_pub_t __user *)
(uintptr_t)request32.list;
} else
DRM_COPY_FROM_USER_IOCTL(request, (drm_buf_map_t *)data,
sizeof (request));
dev->buf_use++;
if (request.count < dma->buf_count)
goto done;
if (request.virtual == NULL) {
DRM_ERROR("drm_mapbufs: request.virtual is NULL");
return (DRM_ERR(EINVAL));
}
vaddr = (unsigned long) request.virtual;
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 (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
caddr32_t address32;
address32 = address;
ret_tmp = DRM_COPY_TO_USER(&request.list[i].address,
&address32,
sizeof (caddr32_t));
} else
ret_tmp = DRM_COPY_TO_USER(&request.list[i].address,
&address, sizeof (address));
if (ret_tmp) {
retcode = EFAULT;
goto done;
}
}
done:
request.count = dma->buf_count;
DRM_DEBUG("drm_mapbufs: %d buffers, retcode = %d\n",
request.count, retcode);
if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
drm_buf_map32_t request32;
request32.count = request.count;
request32.virtual = (caddr32_t)(uintptr_t)request.virtual;
request32.list = (caddr32_t)(uintptr_t)request.list;
DRM_COPY_TO_USER_IOCTL((drm_buf_map32_t *)data,
request32, sizeof (drm_buf_map32_t));
} else
DRM_COPY_TO_USER_IOCTL((drm_buf_map_t *)data, request,
sizeof (request));
return (DRM_ERR(retcode));
}