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/*
* Copyright 2007 Jérôme Glisse
* 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:
* Jerome Glisse <glisse@freedesktop.org>
*/
#include "radeon_ms.h"
static void radeon_ms_execbuffer_args_clean(struct drm_device *dev,
struct drm_buffer_object **buffers,
uint32_t args_count)
{
mutex_lock(&dev->struct_mutex);
while (args_count--) {
drm_bo_usage_deref_locked(&buffers[args_count]);
}
mutex_unlock(&dev->struct_mutex);
}
static int radeon_ms_execbuffer_args(struct drm_device *dev,
struct drm_file *file_priv,
struct drm_radeon_execbuffer *execbuffer,
struct drm_buffer_object **buffers,
uint32_t *relocs)
{
struct drm_radeon_execbuffer_arg arg;
struct drm_bo_arg_rep rep;
uint32_t args_count = 0;
uint64_t next = 0;
uint64_t data = execbuffer->args;
int ret = 0;
do {
if (args_count >= execbuffer->args_count) {
DRM_ERROR("[radeon_ms] buffer count exceeded %d\n.",
execbuffer->args_count);
ret = -EINVAL;
goto out_err;
}
buffers[args_count] = NULL;
if (copy_from_user(&arg, (void __user *)((unsigned)data),
sizeof(struct drm_radeon_execbuffer_arg))) {
ret = -EFAULT;
goto out_err;
}
mutex_lock(&dev->struct_mutex);
buffers[args_count] =
drm_lookup_buffer_object(file_priv,
arg.d.req.arg_handle, 1);
relocs[args_count] = arg.reloc_offset;
mutex_unlock(&dev->struct_mutex);
if (arg.d.req.op != drm_bo_validate) {
DRM_ERROR("[radeon_ms] buffer object operation wasn't "
"validate.\n");
ret = -EINVAL;
goto out_err;
}
memset(&rep, 0, sizeof(struct drm_bo_arg_rep));
if (args_count >= 1) {
ret = drm_bo_handle_validate(file_priv,
arg.d.req.bo_req.handle,
arg.d.req.bo_req.fence_class,
arg.d.req.bo_req.flags,
arg.d.req.bo_req.mask,
arg.d.req.bo_req.hint,
0,
&rep.bo_info,
&buffers[args_count]);
}
if (ret) {
DRM_ERROR("[radeon_ms] error on handle validate %d\n",
ret);
rep.ret = ret;
goto out_err;
}
next = arg.next;
arg.d.rep = rep;
if (copy_to_user((void __user *)((unsigned)data), &arg,
sizeof(struct drm_radeon_execbuffer_arg))) {
ret = -EFAULT;
goto out_err;
}
data = next;
args_count++;
} while (next != 0);
if (args_count != execbuffer->args_count) {
DRM_ERROR("[radeon_ms] not enought buffer got %d waited %d\n.",
args_count, execbuffer->args_count);
ret = -EINVAL;
goto out_err;
}
return 0;
out_err:
radeon_ms_execbuffer_args_clean(dev, buffers, args_count);
return ret;
}
static int radeon_ms_execbuffer_check(struct drm_device *dev,
struct drm_file *file_priv,
struct drm_radeon_execbuffer *execbuffer,
struct drm_buffer_object **buffers,
uint32_t *relocs,
uint32_t *cmd)
{
uint32_t i, gpu_addr;
int ret;
for (i = 0; i < execbuffer->args_count; i++) {
if (relocs[i]) {
ret = radeon_ms_bo_get_gpu_addr(dev, &buffers[i]->mem,
&gpu_addr);
if (ret) {
return ret;
}
cmd[relocs[i]] |= (gpu_addr) >> 10;
}
}
for (i = 0; i < execbuffer->cmd_size; i++) {
#if 0
DRM_INFO("cmd[%d]=0x%08X\n", i, cmd[i]);
#endif
}
return 0;
}
int radeon_ms_execbuffer(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_radeon_execbuffer *execbuffer = data;
struct drm_fence_arg *fence_arg = &execbuffer->fence_arg;
struct drm_buffer_object **buffers;
struct drm_bo_kmap_obj cmd_kmap;
struct drm_fence_object *fence;
uint32_t *relocs;
uint32_t *cmd;
int cmd_is_iomem;
int ret = 0;
ret = drm_bo_read_lock(&dev->bm.bm_lock);
if (ret) {
return ret;
}
relocs = drm_calloc(execbuffer->args_count, sizeof(uint32_t),
DRM_MEM_DRIVER);
if (relocs == NULL) {
drm_bo_read_unlock(&dev->bm.bm_lock);
return -ENOMEM;
}
buffers = drm_calloc(execbuffer->args_count,
sizeof(struct drm_buffer_object *),
DRM_MEM_DRIVER);
if (buffers == NULL) {
drm_free(relocs, (execbuffer->args_count * sizeof(uint32_t)),
DRM_MEM_DRIVER);
drm_bo_read_unlock(&dev->bm.bm_lock);
return -ENOMEM;
}
/* process arguments */
ret = radeon_ms_execbuffer_args(dev, file_priv, execbuffer,
buffers, relocs);
if (ret) {
DRM_ERROR("[radeon_ms] execbuffer wrong arguments\n");
goto out_free;
}
/* map command buffer */
memset(&cmd_kmap, 0, sizeof(struct drm_bo_kmap_obj));
ret = drm_bo_kmap(buffers[0],
0,
buffers[0]->mem.num_pages,
&cmd_kmap);
if (ret) {
DRM_ERROR("[radeon_ms] error mapping ring buffer: %d\n", ret);
goto out_free_release;
}
cmd = drm_bmo_virtual(&cmd_kmap, &cmd_is_iomem);
/* do cmd checking & relocations */
ret = radeon_ms_execbuffer_check(dev, file_priv, execbuffer,
buffers, relocs, cmd);
if (ret) {
drm_putback_buffer_objects(dev);
goto out_free_release;
}
ret = radeon_ms_ring_emit(dev, cmd, execbuffer->cmd_size);
if (ret) {
drm_putback_buffer_objects(dev);
goto out_free_release;
}
/* fence */
ret = drm_fence_buffer_objects(dev, NULL, 0, NULL, &fence);
if (ret) {
drm_putback_buffer_objects(dev);
DRM_ERROR("[radeon_ms] fence buffer objects failed\n");
goto out_free_release;
}
if (!(fence_arg->flags & DRM_FENCE_FLAG_NO_USER)) {
ret = drm_fence_add_user_object(file_priv, fence,
fence_arg->flags & DRM_FENCE_FLAG_SHAREABLE);
if (!ret) {
fence_arg->handle = fence->base.hash.key;
fence_arg->fence_class = fence->fence_class;
fence_arg->type = fence->type;
fence_arg->signaled = fence->signaled;
fence_arg->sequence = fence->sequence;
}
}
drm_fence_usage_deref_unlocked(&fence);
out_free_release:
drm_bo_kunmap(&cmd_kmap);
radeon_ms_execbuffer_args_clean(dev, buffers, execbuffer->args_count);
out_free:
drm_free(relocs, (execbuffer->args_count * sizeof(uint32_t)),
DRM_MEM_DRIVER);
drm_free(buffers,
(execbuffer->args_count * sizeof(struct drm_buffer_object *)),
DRM_MEM_DRIVER);
drm_bo_read_unlock(&dev->bm.bm_lock);
return ret;
}
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