420 lines
10 KiB
C
420 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 "cirrus_drv.h"
|
|
#include <ttm/ttm_page_alloc.h>
|
|
|
|
static inline struct cirrus_device *
|
|
cirrus_bdev(struct ttm_bo_device *bd)
|
|
{
|
|
return container_of(bd, struct cirrus_device, ttm.bdev);
|
|
}
|
|
|
|
static int
|
|
cirrus_ttm_mem_global_init(struct drm_global_reference *ref)
|
|
{
|
|
return ttm_mem_global_init(ref->object);
|
|
}
|
|
|
|
static void
|
|
cirrus_ttm_mem_global_release(struct drm_global_reference *ref)
|
|
{
|
|
ttm_mem_global_release(ref->object);
|
|
}
|
|
|
|
static int cirrus_ttm_global_init(struct cirrus_device *cirrus)
|
|
{
|
|
struct drm_global_reference *global_ref;
|
|
int r;
|
|
|
|
global_ref = &cirrus->ttm.mem_global_ref;
|
|
global_ref->global_type = DRM_GLOBAL_TTM_MEM;
|
|
global_ref->size = sizeof(struct ttm_mem_global);
|
|
global_ref->init = &cirrus_ttm_mem_global_init;
|
|
global_ref->release = &cirrus_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;
|
|
}
|
|
|
|
cirrus->ttm.bo_global_ref.mem_glob =
|
|
cirrus->ttm.mem_global_ref.object;
|
|
global_ref = &cirrus->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(&cirrus->ttm.mem_global_ref);
|
|
return r;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
cirrus_ttm_global_release(struct cirrus_device *cirrus)
|
|
{
|
|
if (cirrus->ttm.mem_global_ref.release == NULL)
|
|
return;
|
|
|
|
drm_global_item_unref(&cirrus->ttm.bo_global_ref.ref);
|
|
drm_global_item_unref(&cirrus->ttm.mem_global_ref);
|
|
cirrus->ttm.mem_global_ref.release = NULL;
|
|
}
|
|
|
|
|
|
static void cirrus_bo_ttm_destroy(struct ttm_buffer_object *tbo)
|
|
{
|
|
struct cirrus_bo *bo;
|
|
|
|
bo = container_of(tbo, struct cirrus_bo, bo);
|
|
|
|
drm_gem_object_release(&bo->gem);
|
|
kfree(bo);
|
|
}
|
|
|
|
static bool cirrus_ttm_bo_is_cirrus_bo(struct ttm_buffer_object *bo)
|
|
{
|
|
if (bo->destroy == &cirrus_bo_ttm_destroy)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
static int
|
|
cirrus_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
|
|
cirrus_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
|
|
{
|
|
struct cirrus_bo *cirrusbo = cirrus_bo(bo);
|
|
|
|
if (!cirrus_ttm_bo_is_cirrus_bo(bo))
|
|
return;
|
|
|
|
cirrus_ttm_placement(cirrusbo, TTM_PL_FLAG_SYSTEM);
|
|
*pl = cirrusbo->placement;
|
|
}
|
|
|
|
static int cirrus_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp)
|
|
{
|
|
struct cirrus_bo *cirrusbo = cirrus_bo(bo);
|
|
|
|
return drm_vma_node_verify_access(&cirrusbo->gem.vma_node, filp);
|
|
}
|
|
|
|
static int cirrus_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 cirrus_device *cirrus = cirrus_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(cirrus->dev->pdev, 0);
|
|
mem->bus.is_iomem = true;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void cirrus_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
|
|
{
|
|
}
|
|
|
|
static int cirrus_bo_move(struct ttm_buffer_object *bo,
|
|
bool evict, bool interruptible,
|
|
bool no_wait_gpu,
|
|
struct ttm_mem_reg *new_mem)
|
|
{
|
|
int r;
|
|
r = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem);
|
|
return r;
|
|
}
|
|
|
|
|
|
static void cirrus_ttm_backend_destroy(struct ttm_tt *tt)
|
|
{
|
|
ttm_tt_fini(tt);
|
|
kfree(tt);
|
|
}
|
|
|
|
static struct ttm_backend_func cirrus_tt_backend_func = {
|
|
.destroy = &cirrus_ttm_backend_destroy,
|
|
};
|
|
|
|
|
|
static struct ttm_tt *cirrus_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 = &cirrus_tt_backend_func;
|
|
if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) {
|
|
kfree(tt);
|
|
return NULL;
|
|
}
|
|
return tt;
|
|
}
|
|
|
|
static int cirrus_ttm_tt_populate(struct ttm_tt *ttm)
|
|
{
|
|
return ttm_pool_populate(ttm);
|
|
}
|
|
|
|
static void cirrus_ttm_tt_unpopulate(struct ttm_tt *ttm)
|
|
{
|
|
ttm_pool_unpopulate(ttm);
|
|
}
|
|
|
|
struct ttm_bo_driver cirrus_bo_driver = {
|
|
.ttm_tt_create = cirrus_ttm_tt_create,
|
|
.ttm_tt_populate = cirrus_ttm_tt_populate,
|
|
.ttm_tt_unpopulate = cirrus_ttm_tt_unpopulate,
|
|
.init_mem_type = cirrus_bo_init_mem_type,
|
|
.evict_flags = cirrus_bo_evict_flags,
|
|
.move = cirrus_bo_move,
|
|
.verify_access = cirrus_bo_verify_access,
|
|
.io_mem_reserve = &cirrus_ttm_io_mem_reserve,
|
|
.io_mem_free = &cirrus_ttm_io_mem_free,
|
|
};
|
|
|
|
int cirrus_mm_init(struct cirrus_device *cirrus)
|
|
{
|
|
int ret;
|
|
struct drm_device *dev = cirrus->dev;
|
|
struct ttm_bo_device *bdev = &cirrus->ttm.bdev;
|
|
|
|
ret = cirrus_ttm_global_init(cirrus);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = ttm_bo_device_init(&cirrus->ttm.bdev,
|
|
cirrus->ttm.bo_global_ref.ref.object,
|
|
&cirrus_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,
|
|
cirrus->mc.vram_size >> PAGE_SHIFT);
|
|
if (ret) {
|
|
DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
cirrus->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
|
|
pci_resource_len(dev->pdev, 0));
|
|
|
|
cirrus->mm_inited = true;
|
|
return 0;
|
|
}
|
|
|
|
void cirrus_mm_fini(struct cirrus_device *cirrus)
|
|
{
|
|
if (!cirrus->mm_inited)
|
|
return;
|
|
|
|
ttm_bo_device_release(&cirrus->ttm.bdev);
|
|
|
|
cirrus_ttm_global_release(cirrus);
|
|
|
|
arch_phys_wc_del(cirrus->fb_mtrr);
|
|
cirrus->fb_mtrr = 0;
|
|
}
|
|
|
|
void cirrus_ttm_placement(struct cirrus_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_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
|
|
if (!c)
|
|
bo->placements[c++].flags = TTM_PL_MASK_CACHING | 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 cirrus_bo_create(struct drm_device *dev, int size, int align,
|
|
uint32_t flags, struct cirrus_bo **pcirrusbo)
|
|
{
|
|
struct cirrus_device *cirrus = dev->dev_private;
|
|
struct cirrus_bo *cirrusbo;
|
|
size_t acc_size;
|
|
int ret;
|
|
|
|
cirrusbo = kzalloc(sizeof(struct cirrus_bo), GFP_KERNEL);
|
|
if (!cirrusbo)
|
|
return -ENOMEM;
|
|
|
|
ret = drm_gem_object_init(dev, &cirrusbo->gem, size);
|
|
if (ret) {
|
|
kfree(cirrusbo);
|
|
return ret;
|
|
}
|
|
|
|
cirrusbo->bo.bdev = &cirrus->ttm.bdev;
|
|
|
|
cirrus_ttm_placement(cirrusbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);
|
|
|
|
acc_size = ttm_bo_dma_acc_size(&cirrus->ttm.bdev, size,
|
|
sizeof(struct cirrus_bo));
|
|
|
|
ret = ttm_bo_init(&cirrus->ttm.bdev, &cirrusbo->bo, size,
|
|
ttm_bo_type_device, &cirrusbo->placement,
|
|
align >> PAGE_SHIFT, false, NULL, acc_size,
|
|
NULL, NULL, cirrus_bo_ttm_destroy);
|
|
if (ret)
|
|
return ret;
|
|
|
|
*pcirrusbo = cirrusbo;
|
|
return 0;
|
|
}
|
|
|
|
static inline u64 cirrus_bo_gpu_offset(struct cirrus_bo *bo)
|
|
{
|
|
return bo->bo.offset;
|
|
}
|
|
|
|
int cirrus_bo_pin(struct cirrus_bo *bo, u32 pl_flag, u64 *gpu_addr)
|
|
{
|
|
int i, ret;
|
|
|
|
if (bo->pin_count) {
|
|
bo->pin_count++;
|
|
if (gpu_addr)
|
|
*gpu_addr = cirrus_bo_gpu_offset(bo);
|
|
}
|
|
|
|
cirrus_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 = cirrus_bo_gpu_offset(bo);
|
|
return 0;
|
|
}
|
|
|
|
int cirrus_bo_push_sysram(struct cirrus_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);
|
|
|
|
cirrus_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 cirrus_mmap(struct file *filp, struct vm_area_struct *vma)
|
|
{
|
|
struct drm_file *file_priv;
|
|
struct cirrus_device *cirrus;
|
|
|
|
if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
|
|
return -EINVAL;
|
|
|
|
file_priv = filp->private_data;
|
|
cirrus = file_priv->minor->dev->dev_private;
|
|
return ttm_bo_mmap(filp, vma, &cirrus->ttm.bdev);
|
|
}
|