432 lines
10 KiB
C
432 lines
10 KiB
C
/*
|
|
* Copyright 2012 Red Hat Inc.
|
|
*
|
|
* 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL
|
|
* THE COPYRIGHT HOLDERS, AUTHORS 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.
|
|
*
|
|
* The above copyright notice and this permission notice (including the
|
|
* next paragraph) shall be included in all copies or substantial portions
|
|
* of the Software.
|
|
*
|
|
*/
|
|
/*
|
|
* Authors: Dave Airlie <airlied@redhat.com>
|
|
*/
|
|
#include <drm/drmP.h>
|
|
#include <drm/ttm/ttm_page_alloc.h>
|
|
|
|
#include "ast_drv.h"
|
|
|
|
static inline struct ast_private *
|
|
ast_bdev(struct ttm_bo_device *bd)
|
|
{
|
|
return container_of(bd, struct ast_private, ttm.bdev);
|
|
}
|
|
|
|
static int
|
|
ast_ttm_mem_global_init(struct drm_global_reference *ref)
|
|
{
|
|
return ttm_mem_global_init(ref->object);
|
|
}
|
|
|
|
static void
|
|
ast_ttm_mem_global_release(struct drm_global_reference *ref)
|
|
{
|
|
ttm_mem_global_release(ref->object);
|
|
}
|
|
|
|
static int ast_ttm_global_init(struct ast_private *ast)
|
|
{
|
|
struct drm_global_reference *global_ref;
|
|
int r;
|
|
|
|
global_ref = &ast->ttm.mem_global_ref;
|
|
global_ref->global_type = DRM_GLOBAL_TTM_MEM;
|
|
global_ref->size = sizeof(struct ttm_mem_global);
|
|
global_ref->init = &ast_ttm_mem_global_init;
|
|
global_ref->release = &ast_ttm_mem_global_release;
|
|
r = drm_global_item_ref(global_ref);
|
|
if (r != 0) {
|
|
DRM_ERROR("Failed setting up TTM memory accounting "
|
|
"subsystem.\n");
|
|
return r;
|
|
}
|
|
|
|
ast->ttm.bo_global_ref.mem_glob =
|
|
ast->ttm.mem_global_ref.object;
|
|
global_ref = &ast->ttm.bo_global_ref.ref;
|
|
global_ref->global_type = DRM_GLOBAL_TTM_BO;
|
|
global_ref->size = sizeof(struct ttm_bo_global);
|
|
global_ref->init = &ttm_bo_global_init;
|
|
global_ref->release = &ttm_bo_global_release;
|
|
r = drm_global_item_ref(global_ref);
|
|
if (r != 0) {
|
|
DRM_ERROR("Failed setting up TTM BO subsystem.\n");
|
|
drm_global_item_unref(&ast->ttm.mem_global_ref);
|
|
return r;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
ast_ttm_global_release(struct ast_private *ast)
|
|
{
|
|
if (ast->ttm.mem_global_ref.release == NULL)
|
|
return;
|
|
|
|
drm_global_item_unref(&ast->ttm.bo_global_ref.ref);
|
|
drm_global_item_unref(&ast->ttm.mem_global_ref);
|
|
ast->ttm.mem_global_ref.release = NULL;
|
|
}
|
|
|
|
|
|
static void ast_bo_ttm_destroy(struct ttm_buffer_object *tbo)
|
|
{
|
|
struct ast_bo *bo;
|
|
|
|
bo = container_of(tbo, struct ast_bo, bo);
|
|
|
|
drm_gem_object_release(&bo->gem);
|
|
kfree(bo);
|
|
}
|
|
|
|
static bool ast_ttm_bo_is_ast_bo(struct ttm_buffer_object *bo)
|
|
{
|
|
if (bo->destroy == &ast_bo_ttm_destroy)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
static int
|
|
ast_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
|
|
struct ttm_mem_type_manager *man)
|
|
{
|
|
switch (type) {
|
|
case TTM_PL_SYSTEM:
|
|
man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
|
|
man->available_caching = TTM_PL_MASK_CACHING;
|
|
man->default_caching = TTM_PL_FLAG_CACHED;
|
|
break;
|
|
case TTM_PL_VRAM:
|
|
man->func = &ttm_bo_manager_func;
|
|
man->flags = TTM_MEMTYPE_FLAG_FIXED |
|
|
TTM_MEMTYPE_FLAG_MAPPABLE;
|
|
man->available_caching = TTM_PL_FLAG_UNCACHED |
|
|
TTM_PL_FLAG_WC;
|
|
man->default_caching = TTM_PL_FLAG_WC;
|
|
break;
|
|
default:
|
|
DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
ast_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
|
|
{
|
|
struct ast_bo *astbo = ast_bo(bo);
|
|
|
|
if (!ast_ttm_bo_is_ast_bo(bo))
|
|
return;
|
|
|
|
ast_ttm_placement(astbo, TTM_PL_FLAG_SYSTEM);
|
|
*pl = astbo->placement;
|
|
}
|
|
|
|
static int ast_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp)
|
|
{
|
|
struct ast_bo *astbo = ast_bo(bo);
|
|
|
|
return drm_vma_node_verify_access(&astbo->gem.vma_node,
|
|
filp->private_data);
|
|
}
|
|
|
|
static int ast_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
|
|
struct ttm_mem_reg *mem)
|
|
{
|
|
struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
|
|
struct ast_private *ast = ast_bdev(bdev);
|
|
|
|
mem->bus.addr = NULL;
|
|
mem->bus.offset = 0;
|
|
mem->bus.size = mem->num_pages << PAGE_SHIFT;
|
|
mem->bus.base = 0;
|
|
mem->bus.is_iomem = false;
|
|
if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
|
|
return -EINVAL;
|
|
switch (mem->mem_type) {
|
|
case TTM_PL_SYSTEM:
|
|
/* system memory */
|
|
return 0;
|
|
case TTM_PL_VRAM:
|
|
mem->bus.offset = mem->start << PAGE_SHIFT;
|
|
mem->bus.base = pci_resource_start(ast->dev->pdev, 0);
|
|
mem->bus.is_iomem = true;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void ast_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
|
|
{
|
|
}
|
|
|
|
static void ast_ttm_backend_destroy(struct ttm_tt *tt)
|
|
{
|
|
ttm_tt_fini(tt);
|
|
kfree(tt);
|
|
}
|
|
|
|
static struct ttm_backend_func ast_tt_backend_func = {
|
|
.destroy = &ast_ttm_backend_destroy,
|
|
};
|
|
|
|
|
|
static struct ttm_tt *ast_ttm_tt_create(struct ttm_bo_device *bdev,
|
|
unsigned long size, uint32_t page_flags,
|
|
struct page *dummy_read_page)
|
|
{
|
|
struct ttm_tt *tt;
|
|
|
|
tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL);
|
|
if (tt == NULL)
|
|
return NULL;
|
|
tt->func = &ast_tt_backend_func;
|
|
if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) {
|
|
kfree(tt);
|
|
return NULL;
|
|
}
|
|
return tt;
|
|
}
|
|
|
|
static int ast_ttm_tt_populate(struct ttm_tt *ttm)
|
|
{
|
|
return ttm_pool_populate(ttm);
|
|
}
|
|
|
|
static void ast_ttm_tt_unpopulate(struct ttm_tt *ttm)
|
|
{
|
|
ttm_pool_unpopulate(ttm);
|
|
}
|
|
|
|
struct ttm_bo_driver ast_bo_driver = {
|
|
.ttm_tt_create = ast_ttm_tt_create,
|
|
.ttm_tt_populate = ast_ttm_tt_populate,
|
|
.ttm_tt_unpopulate = ast_ttm_tt_unpopulate,
|
|
.init_mem_type = ast_bo_init_mem_type,
|
|
.eviction_valuable = ttm_bo_eviction_valuable,
|
|
.evict_flags = ast_bo_evict_flags,
|
|
.move = NULL,
|
|
.verify_access = ast_bo_verify_access,
|
|
.io_mem_reserve = &ast_ttm_io_mem_reserve,
|
|
.io_mem_free = &ast_ttm_io_mem_free,
|
|
.io_mem_pfn = ttm_bo_default_io_mem_pfn,
|
|
};
|
|
|
|
int ast_mm_init(struct ast_private *ast)
|
|
{
|
|
int ret;
|
|
struct drm_device *dev = ast->dev;
|
|
struct ttm_bo_device *bdev = &ast->ttm.bdev;
|
|
|
|
ret = ast_ttm_global_init(ast);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = ttm_bo_device_init(&ast->ttm.bdev,
|
|
ast->ttm.bo_global_ref.ref.object,
|
|
&ast_bo_driver,
|
|
dev->anon_inode->i_mapping,
|
|
DRM_FILE_PAGE_OFFSET,
|
|
true);
|
|
if (ret) {
|
|
DRM_ERROR("Error initialising bo driver; %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
|
|
ast->vram_size >> PAGE_SHIFT);
|
|
if (ret) {
|
|
DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
arch_io_reserve_memtype_wc(pci_resource_start(dev->pdev, 0),
|
|
pci_resource_len(dev->pdev, 0));
|
|
ast->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
|
|
pci_resource_len(dev->pdev, 0));
|
|
|
|
return 0;
|
|
}
|
|
|
|
void ast_mm_fini(struct ast_private *ast)
|
|
{
|
|
struct drm_device *dev = ast->dev;
|
|
|
|
ttm_bo_device_release(&ast->ttm.bdev);
|
|
|
|
ast_ttm_global_release(ast);
|
|
|
|
arch_phys_wc_del(ast->fb_mtrr);
|
|
arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0),
|
|
pci_resource_len(dev->pdev, 0));
|
|
}
|
|
|
|
void ast_ttm_placement(struct ast_bo *bo, int domain)
|
|
{
|
|
u32 c = 0;
|
|
unsigned i;
|
|
|
|
bo->placement.placement = bo->placements;
|
|
bo->placement.busy_placement = bo->placements;
|
|
if (domain & TTM_PL_FLAG_VRAM)
|
|
bo->placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM;
|
|
if (domain & TTM_PL_FLAG_SYSTEM)
|
|
bo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM;
|
|
if (!c)
|
|
bo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM;
|
|
bo->placement.num_placement = c;
|
|
bo->placement.num_busy_placement = c;
|
|
for (i = 0; i < c; ++i) {
|
|
bo->placements[i].fpfn = 0;
|
|
bo->placements[i].lpfn = 0;
|
|
}
|
|
}
|
|
|
|
int ast_bo_create(struct drm_device *dev, int size, int align,
|
|
uint32_t flags, struct ast_bo **pastbo)
|
|
{
|
|
struct ast_private *ast = dev->dev_private;
|
|
struct ast_bo *astbo;
|
|
size_t acc_size;
|
|
int ret;
|
|
|
|
astbo = kzalloc(sizeof(struct ast_bo), GFP_KERNEL);
|
|
if (!astbo)
|
|
return -ENOMEM;
|
|
|
|
ret = drm_gem_object_init(dev, &astbo->gem, size);
|
|
if (ret)
|
|
goto error;
|
|
|
|
astbo->bo.bdev = &ast->ttm.bdev;
|
|
|
|
ast_ttm_placement(astbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);
|
|
|
|
acc_size = ttm_bo_dma_acc_size(&ast->ttm.bdev, size,
|
|
sizeof(struct ast_bo));
|
|
|
|
ret = ttm_bo_init(&ast->ttm.bdev, &astbo->bo, size,
|
|
ttm_bo_type_device, &astbo->placement,
|
|
align >> PAGE_SHIFT, false, NULL, acc_size,
|
|
NULL, NULL, ast_bo_ttm_destroy);
|
|
if (ret)
|
|
goto error;
|
|
|
|
*pastbo = astbo;
|
|
return 0;
|
|
error:
|
|
kfree(astbo);
|
|
return ret;
|
|
}
|
|
|
|
static inline u64 ast_bo_gpu_offset(struct ast_bo *bo)
|
|
{
|
|
return bo->bo.offset;
|
|
}
|
|
|
|
int ast_bo_pin(struct ast_bo *bo, u32 pl_flag, u64 *gpu_addr)
|
|
{
|
|
int i, ret;
|
|
|
|
if (bo->pin_count) {
|
|
bo->pin_count++;
|
|
if (gpu_addr)
|
|
*gpu_addr = ast_bo_gpu_offset(bo);
|
|
}
|
|
|
|
ast_ttm_placement(bo, pl_flag);
|
|
for (i = 0; i < bo->placement.num_placement; i++)
|
|
bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
|
|
ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
|
|
if (ret)
|
|
return ret;
|
|
|
|
bo->pin_count = 1;
|
|
if (gpu_addr)
|
|
*gpu_addr = ast_bo_gpu_offset(bo);
|
|
return 0;
|
|
}
|
|
|
|
int ast_bo_unpin(struct ast_bo *bo)
|
|
{
|
|
int i;
|
|
if (!bo->pin_count) {
|
|
DRM_ERROR("unpin bad %p\n", bo);
|
|
return 0;
|
|
}
|
|
bo->pin_count--;
|
|
if (bo->pin_count)
|
|
return 0;
|
|
|
|
for (i = 0; i < bo->placement.num_placement ; i++)
|
|
bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
|
|
return ttm_bo_validate(&bo->bo, &bo->placement, false, false);
|
|
}
|
|
|
|
int ast_bo_push_sysram(struct ast_bo *bo)
|
|
{
|
|
int i, ret;
|
|
if (!bo->pin_count) {
|
|
DRM_ERROR("unpin bad %p\n", bo);
|
|
return 0;
|
|
}
|
|
bo->pin_count--;
|
|
if (bo->pin_count)
|
|
return 0;
|
|
|
|
if (bo->kmap.virtual)
|
|
ttm_bo_kunmap(&bo->kmap);
|
|
|
|
ast_ttm_placement(bo, TTM_PL_FLAG_SYSTEM);
|
|
for (i = 0; i < bo->placement.num_placement ; i++)
|
|
bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
|
|
|
|
ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
|
|
if (ret) {
|
|
DRM_ERROR("pushing to VRAM failed\n");
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int ast_mmap(struct file *filp, struct vm_area_struct *vma)
|
|
{
|
|
struct drm_file *file_priv;
|
|
struct ast_private *ast;
|
|
|
|
if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
|
|
return -EINVAL;
|
|
|
|
file_priv = filp->private_data;
|
|
ast = file_priv->minor->dev->dev_private;
|
|
return ttm_bo_mmap(filp, vma, &ast->ttm.bdev);
|
|
}
|