GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-05 14:17:43 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

drm/ttm: use caching instead of placement for ttm_io_prot

Browse source 
Instead of the placement flags use the caching of the bus
mapping or tt object for the page protection flags.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Link: https://patchwork.freedesktop.org/patch/394255/
This commit is contained in:
Christian König 2020-09-30 15:56:53 +02:00
parent 1cf65c4518
commit 867bcecd6a
4 changed files with 21 additions and 14 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
drivers/gpu/drm/ttm/ttm_bo_util.c
View file

@ -279,13 +279,11 @@ int ttm_bo_move_memcpy(struct ttm_buffer_object *bo,
for (i = 0; i < new_mem->num_pages; ++i) {
page = i * dir + add;
if (old_iomap == NULL) {
pgprot_t prot = ttm_io_prot(old_mem->placement,
PAGE_KERNEL);
pgprot_t prot = ttm_io_prot(bo, old_mem, PAGE_KERNEL);
ret = ttm_copy_ttm_io_page(ttm, new_iomap, page,
prot);
} else if (new_iomap == NULL) {
pgprot_t prot = ttm_io_prot(new_mem->placement,
PAGE_KERNEL);
pgprot_t prot = ttm_io_prot(bo, new_mem, PAGE_KERNEL);
ret = ttm_copy_io_ttm_page(ttm, old_iomap, page,
prot);
} else {
@ -384,21 +382,28 @@ static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo,
return 0;
}
pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp)
pgprot_t ttm_io_prot(struct ttm_buffer_object *bo, struct ttm_resource *res,
pgprot_t tmp)
{
struct ttm_resource_manager *man;
enum ttm_caching caching;
man = ttm_manager_type(bo->bdev, res->mem_type);
caching = man->use_tt ? bo->ttm->caching : res->bus.caching;
/* Cached mappings need no adjustment */
if (caching_flags & TTM_PL_FLAG_CACHED)
if (caching == ttm_cached)
return tmp;
#if defined(__i386__) || defined(__x86_64__)
if (caching_flags & TTM_PL_FLAG_WC)
if (caching == ttm_write_combined)
tmp = pgprot_writecombine(tmp);
else if (boot_cpu_data.x86 > 3)
tmp = pgprot_noncached(tmp);
#endif
#if defined(__ia64__) || defined(__arm__) || defined(__aarch64__) || \
defined(__powerpc__) || defined(__mips__)
if (caching_flags & TTM_PL_FLAG_WC)
if (caching == ttm_write_combined)
tmp = pgprot_writecombine(tmp);
else
tmp = pgprot_noncached(tmp);
@ -466,7 +471,7 @@ static int ttm_bo_kmap_ttm(struct ttm_buffer_object *bo,
* We need to use vmap to get the desired page protection
* or to make the buffer object look contiguous.
*/
prot = ttm_io_prot(mem->placement, PAGE_KERNEL);
prot = ttm_io_prot(bo, mem, PAGE_KERNEL);
map->bo_kmap_type = ttm_bo_map_vmap;
map->virtual = vmap(ttm->pages + start_page, num_pages,
0, prot);

2
drivers/gpu/drm/ttm/ttm_bo_vm.c
View file

@ -310,7 +310,7 @@ vm_fault_t ttm_bo_vm_fault_reserved(struct vm_fault *vmf,
if (unlikely(page_offset >= bo->num_pages))
return VM_FAULT_SIGBUS;
prot = ttm_io_prot(bo->mem.placement, prot);
prot = ttm_io_prot(bo, &bo->mem, prot);
if (!bo->mem.bus.is_iomem) {
struct ttm_operation_ctx ctx = {
.interruptible = false,

4
drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
View file

@ -484,8 +484,8 @@ int vmw_bo_cpu_blit(struct ttm_buffer_object *dst,
d.src_pages = src->ttm->pages;
d.dst_num_pages = dst->num_pages;
d.src_num_pages = src->num_pages;
d.dst_prot = ttm_io_prot(dst->mem.placement, PAGE_KERNEL);
d.src_prot = ttm_io_prot(src->mem.placement, PAGE_KERNEL);
d.dst_prot = ttm_io_prot(dst, &dst->mem, PAGE_KERNEL);
d.src_prot = ttm_io_prot(src, &src->mem, PAGE_KERNEL);
d.diff = diff;
for (j = 0; j < h; ++j) {

6
include/drm/ttm/ttm_bo_driver.h
View file

@ -657,13 +657,15 @@ int ttm_bo_pipeline_gutting(struct ttm_buffer_object *bo);
/**
* ttm_io_prot
*
* @c_state: Caching state.
* bo: ttm buffer object
* res: ttm resource object
* @tmp: Page protection flag for a normal, cached mapping.
*
* Utility function that returns the pgprot_t that should be used for
* setting up a PTE with the caching model indicated by @c_state.
*/
pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp);
pgprot_t ttm_io_prot(struct ttm_buffer_object *bo, struct ttm_resource *res,
pgprot_t tmp);
/**
* ttm_bo_tt_bind