linux/drivers/gpu/drm/radeon/radeon_gem.c
Jerome Glisse e43b5ec05a drm/radeon: fence virtual address and free it once idle v4
Virtual address need to be fenced to know when we can safely remove it.
This patch also properly clear the pagetable. Previously it was
serouisly broken.

Kernel 3.5/3.4 need a similar patch but adapted for difference in mutex locking.

v2: For to update pagetable when unbinding bo (don't bailout if
    bo_va->valid is true).
v3: Add kernel 3.5/3.4 comment.
v4: Fix compilation warnings.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2012-08-13 10:50:55 -04:00

524 lines
14 KiB
C

/*
* Copyright 2008 Advanced Micro Devices, Inc.
* Copyright 2008 Red Hat Inc.
* Copyright 2009 Jerome Glisse.
*
* 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 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
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Dave Airlie
* Alex Deucher
* Jerome Glisse
*/
#include "drmP.h"
#include "drm.h"
#include "radeon_drm.h"
#include "radeon.h"
int radeon_gem_object_init(struct drm_gem_object *obj)
{
BUG();
return 0;
}
void radeon_gem_object_free(struct drm_gem_object *gobj)
{
struct radeon_bo *robj = gem_to_radeon_bo(gobj);
if (robj) {
if (robj->gem_base.import_attach)
drm_prime_gem_destroy(&robj->gem_base, robj->tbo.sg);
radeon_bo_unref(&robj);
}
}
int radeon_gem_object_create(struct radeon_device *rdev, int size,
int alignment, int initial_domain,
bool discardable, bool kernel,
struct drm_gem_object **obj)
{
struct radeon_bo *robj;
int r;
*obj = NULL;
/* At least align on page size */
if (alignment < PAGE_SIZE) {
alignment = PAGE_SIZE;
}
r = radeon_bo_create(rdev, size, alignment, kernel, initial_domain, NULL, &robj);
if (r) {
if (r != -ERESTARTSYS)
DRM_ERROR("Failed to allocate GEM object (%d, %d, %u, %d)\n",
size, initial_domain, alignment, r);
return r;
}
*obj = &robj->gem_base;
mutex_lock(&rdev->gem.mutex);
list_add_tail(&robj->list, &rdev->gem.objects);
mutex_unlock(&rdev->gem.mutex);
return 0;
}
int radeon_gem_set_domain(struct drm_gem_object *gobj,
uint32_t rdomain, uint32_t wdomain)
{
struct radeon_bo *robj;
uint32_t domain;
int r;
/* FIXME: reeimplement */
robj = gem_to_radeon_bo(gobj);
/* work out where to validate the buffer to */
domain = wdomain;
if (!domain) {
domain = rdomain;
}
if (!domain) {
/* Do nothings */
printk(KERN_WARNING "Set domain without domain !\n");
return 0;
}
if (domain == RADEON_GEM_DOMAIN_CPU) {
/* Asking for cpu access wait for object idle */
r = radeon_bo_wait(robj, NULL, false);
if (r) {
printk(KERN_ERR "Failed to wait for object !\n");
return r;
}
}
return 0;
}
int radeon_gem_init(struct radeon_device *rdev)
{
INIT_LIST_HEAD(&rdev->gem.objects);
return 0;
}
void radeon_gem_fini(struct radeon_device *rdev)
{
radeon_bo_force_delete(rdev);
}
/*
* Call from drm_gem_handle_create which appear in both new and open ioctl
* case.
*/
int radeon_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv)
{
return 0;
}
void radeon_gem_object_close(struct drm_gem_object *obj,
struct drm_file *file_priv)
{
struct radeon_bo *rbo = gem_to_radeon_bo(obj);
struct radeon_device *rdev = rbo->rdev;
struct radeon_fpriv *fpriv = file_priv->driver_priv;
struct radeon_vm *vm = &fpriv->vm;
if (rdev->family < CHIP_CAYMAN) {
return;
}
if (radeon_bo_reserve(rbo, false)) {
dev_err(rdev->dev, "leaking bo va because we fail to reserve bo\n");
return;
}
radeon_vm_bo_rmv(rdev, vm, rbo);
radeon_bo_unreserve(rbo);
}
static int radeon_gem_handle_lockup(struct radeon_device *rdev, int r)
{
if (r == -EDEADLK) {
r = radeon_gpu_reset(rdev);
if (!r)
r = -EAGAIN;
}
return r;
}
/*
* GEM ioctls.
*/
int radeon_gem_info_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
struct radeon_device *rdev = dev->dev_private;
struct drm_radeon_gem_info *args = data;
struct ttm_mem_type_manager *man;
unsigned i;
man = &rdev->mman.bdev.man[TTM_PL_VRAM];
args->vram_size = rdev->mc.real_vram_size;
args->vram_visible = (u64)man->size << PAGE_SHIFT;
if (rdev->stollen_vga_memory)
args->vram_visible -= radeon_bo_size(rdev->stollen_vga_memory);
args->vram_visible -= radeon_fbdev_total_size(rdev);
args->gart_size = rdev->mc.gtt_size - 4096 - RADEON_IB_POOL_SIZE*64*1024;
for(i = 0; i < RADEON_NUM_RINGS; ++i)
args->gart_size -= rdev->ring[i].ring_size;
return 0;
}
int radeon_gem_pread_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
/* TODO: implement */
DRM_ERROR("unimplemented %s\n", __func__);
return -ENOSYS;
}
int radeon_gem_pwrite_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
/* TODO: implement */
DRM_ERROR("unimplemented %s\n", __func__);
return -ENOSYS;
}
int radeon_gem_create_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
struct radeon_device *rdev = dev->dev_private;
struct drm_radeon_gem_create *args = data;
struct drm_gem_object *gobj;
uint32_t handle;
int r;
down_read(&rdev->exclusive_lock);
/* create a gem object to contain this object in */
args->size = roundup(args->size, PAGE_SIZE);
r = radeon_gem_object_create(rdev, args->size, args->alignment,
args->initial_domain, false,
false, &gobj);
if (r) {
up_read(&rdev->exclusive_lock);
r = radeon_gem_handle_lockup(rdev, r);
return r;
}
r = drm_gem_handle_create(filp, gobj, &handle);
/* drop reference from allocate - handle holds it now */
drm_gem_object_unreference_unlocked(gobj);
if (r) {
up_read(&rdev->exclusive_lock);
r = radeon_gem_handle_lockup(rdev, r);
return r;
}
args->handle = handle;
up_read(&rdev->exclusive_lock);
return 0;
}
int radeon_gem_set_domain_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
/* transition the BO to a domain -
* just validate the BO into a certain domain */
struct radeon_device *rdev = dev->dev_private;
struct drm_radeon_gem_set_domain *args = data;
struct drm_gem_object *gobj;
struct radeon_bo *robj;
int r;
/* for now if someone requests domain CPU -
* just make sure the buffer is finished with */
down_read(&rdev->exclusive_lock);
/* just do a BO wait for now */
gobj = drm_gem_object_lookup(dev, filp, args->handle);
if (gobj == NULL) {
up_read(&rdev->exclusive_lock);
return -ENOENT;
}
robj = gem_to_radeon_bo(gobj);
r = radeon_gem_set_domain(gobj, args->read_domains, args->write_domain);
drm_gem_object_unreference_unlocked(gobj);
up_read(&rdev->exclusive_lock);
r = radeon_gem_handle_lockup(robj->rdev, r);
return r;
}
int radeon_mode_dumb_mmap(struct drm_file *filp,
struct drm_device *dev,
uint32_t handle, uint64_t *offset_p)
{
struct drm_gem_object *gobj;
struct radeon_bo *robj;
gobj = drm_gem_object_lookup(dev, filp, handle);
if (gobj == NULL) {
return -ENOENT;
}
robj = gem_to_radeon_bo(gobj);
*offset_p = radeon_bo_mmap_offset(robj);
drm_gem_object_unreference_unlocked(gobj);
return 0;
}
int radeon_gem_mmap_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
struct drm_radeon_gem_mmap *args = data;
return radeon_mode_dumb_mmap(filp, dev, args->handle, &args->addr_ptr);
}
int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
struct radeon_device *rdev = dev->dev_private;
struct drm_radeon_gem_busy *args = data;
struct drm_gem_object *gobj;
struct radeon_bo *robj;
int r;
uint32_t cur_placement = 0;
gobj = drm_gem_object_lookup(dev, filp, args->handle);
if (gobj == NULL) {
return -ENOENT;
}
robj = gem_to_radeon_bo(gobj);
r = radeon_bo_wait(robj, &cur_placement, true);
switch (cur_placement) {
case TTM_PL_VRAM:
args->domain = RADEON_GEM_DOMAIN_VRAM;
break;
case TTM_PL_TT:
args->domain = RADEON_GEM_DOMAIN_GTT;
break;
case TTM_PL_SYSTEM:
args->domain = RADEON_GEM_DOMAIN_CPU;
default:
break;
}
drm_gem_object_unreference_unlocked(gobj);
r = radeon_gem_handle_lockup(rdev, r);
return r;
}
int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
struct radeon_device *rdev = dev->dev_private;
struct drm_radeon_gem_wait_idle *args = data;
struct drm_gem_object *gobj;
struct radeon_bo *robj;
int r;
gobj = drm_gem_object_lookup(dev, filp, args->handle);
if (gobj == NULL) {
return -ENOENT;
}
robj = gem_to_radeon_bo(gobj);
r = radeon_bo_wait(robj, NULL, false);
/* callback hw specific functions if any */
if (rdev->asic->ioctl_wait_idle)
robj->rdev->asic->ioctl_wait_idle(rdev, robj);
drm_gem_object_unreference_unlocked(gobj);
r = radeon_gem_handle_lockup(rdev, r);
return r;
}
int radeon_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
struct drm_radeon_gem_set_tiling *args = data;
struct drm_gem_object *gobj;
struct radeon_bo *robj;
int r = 0;
DRM_DEBUG("%d \n", args->handle);
gobj = drm_gem_object_lookup(dev, filp, args->handle);
if (gobj == NULL)
return -ENOENT;
robj = gem_to_radeon_bo(gobj);
r = radeon_bo_set_tiling_flags(robj, args->tiling_flags, args->pitch);
drm_gem_object_unreference_unlocked(gobj);
return r;
}
int radeon_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
struct drm_radeon_gem_get_tiling *args = data;
struct drm_gem_object *gobj;
struct radeon_bo *rbo;
int r = 0;
DRM_DEBUG("\n");
gobj = drm_gem_object_lookup(dev, filp, args->handle);
if (gobj == NULL)
return -ENOENT;
rbo = gem_to_radeon_bo(gobj);
r = radeon_bo_reserve(rbo, false);
if (unlikely(r != 0))
goto out;
radeon_bo_get_tiling_flags(rbo, &args->tiling_flags, &args->pitch);
radeon_bo_unreserve(rbo);
out:
drm_gem_object_unreference_unlocked(gobj);
return r;
}
int radeon_gem_va_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
struct drm_radeon_gem_va *args = data;
struct drm_gem_object *gobj;
struct radeon_device *rdev = dev->dev_private;
struct radeon_fpriv *fpriv = filp->driver_priv;
struct radeon_bo *rbo;
struct radeon_bo_va *bo_va;
u32 invalid_flags;
int r = 0;
if (!rdev->vm_manager.enabled) {
args->operation = RADEON_VA_RESULT_ERROR;
return -ENOTTY;
}
/* !! DONT REMOVE !!
* We don't support vm_id yet, to be sure we don't have have broken
* userspace, reject anyone trying to use non 0 value thus moving
* forward we can use those fields without breaking existant userspace
*/
if (args->vm_id) {
args->operation = RADEON_VA_RESULT_ERROR;
return -EINVAL;
}
if (args->offset < RADEON_VA_RESERVED_SIZE) {
dev_err(&dev->pdev->dev,
"offset 0x%lX is in reserved area 0x%X\n",
(unsigned long)args->offset,
RADEON_VA_RESERVED_SIZE);
args->operation = RADEON_VA_RESULT_ERROR;
return -EINVAL;
}
/* don't remove, we need to enforce userspace to set the snooped flag
* otherwise we will endup with broken userspace and we won't be able
* to enable this feature without adding new interface
*/
invalid_flags = RADEON_VM_PAGE_VALID | RADEON_VM_PAGE_SYSTEM;
if ((args->flags & invalid_flags)) {
dev_err(&dev->pdev->dev, "invalid flags 0x%08X vs 0x%08X\n",
args->flags, invalid_flags);
args->operation = RADEON_VA_RESULT_ERROR;
return -EINVAL;
}
if (!(args->flags & RADEON_VM_PAGE_SNOOPED)) {
dev_err(&dev->pdev->dev, "only supported snooped mapping for now\n");
args->operation = RADEON_VA_RESULT_ERROR;
return -EINVAL;
}
switch (args->operation) {
case RADEON_VA_MAP:
case RADEON_VA_UNMAP:
break;
default:
dev_err(&dev->pdev->dev, "unsupported operation %d\n",
args->operation);
args->operation = RADEON_VA_RESULT_ERROR;
return -EINVAL;
}
gobj = drm_gem_object_lookup(dev, filp, args->handle);
if (gobj == NULL) {
args->operation = RADEON_VA_RESULT_ERROR;
return -ENOENT;
}
rbo = gem_to_radeon_bo(gobj);
r = radeon_bo_reserve(rbo, false);
if (r) {
args->operation = RADEON_VA_RESULT_ERROR;
drm_gem_object_unreference_unlocked(gobj);
return r;
}
switch (args->operation) {
case RADEON_VA_MAP:
bo_va = radeon_bo_va(rbo, &fpriv->vm);
if (bo_va) {
args->operation = RADEON_VA_RESULT_VA_EXIST;
args->offset = bo_va->soffset;
goto out;
}
r = radeon_vm_bo_add(rdev, &fpriv->vm, rbo,
args->offset, args->flags);
break;
case RADEON_VA_UNMAP:
r = radeon_vm_bo_rmv(rdev, &fpriv->vm, rbo);
break;
default:
break;
}
args->operation = RADEON_VA_RESULT_OK;
if (r) {
args->operation = RADEON_VA_RESULT_ERROR;
}
out:
radeon_bo_unreserve(rbo);
drm_gem_object_unreference_unlocked(gobj);
return r;
}
int radeon_mode_dumb_create(struct drm_file *file_priv,
struct drm_device *dev,
struct drm_mode_create_dumb *args)
{
struct radeon_device *rdev = dev->dev_private;
struct drm_gem_object *gobj;
uint32_t handle;
int r;
args->pitch = radeon_align_pitch(rdev, args->width, args->bpp, 0) * ((args->bpp + 1) / 8);
args->size = args->pitch * args->height;
args->size = ALIGN(args->size, PAGE_SIZE);
r = radeon_gem_object_create(rdev, args->size, 0,
RADEON_GEM_DOMAIN_VRAM,
false, ttm_bo_type_device,
&gobj);
if (r)
return -ENOMEM;
r = drm_gem_handle_create(file_priv, gobj, &handle);
/* drop reference from allocate - handle holds it now */
drm_gem_object_unreference_unlocked(gobj);
if (r) {
return r;
}
args->handle = handle;
return 0;
}
int radeon_mode_dumb_destroy(struct drm_file *file_priv,
struct drm_device *dev,
uint32_t handle)
{
return drm_gem_handle_delete(file_priv, handle);
}