[Intel-gfx] [PATCH v4 05/14] drm/ttm: s/FLAG_SG/FLAG_EXTERNAL/

Matthew Auld
2021-09-21T11:02:26Z

It covers more than just ttm_bo_type_sg usage, like with say dma-buf,
since one other user is userptr in amdgpu, and in the future we might
have some more. Hence EXTERNAL is likely a more suitable name.

v2(Christian):
- Rename these to TTM_TT_FLAGS_*
- Fix up all the holes in the flag values

Suggested-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Christian König <christian.koenig@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 10 +++++-----
drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 6 +++---
drivers/gpu/drm/nouveau/nouveau_bo.c | 4 ++--
drivers/gpu/drm/radeon/radeon_ttm.c | 8 ++++----
drivers/gpu/drm/ttm/ttm_bo.c | 4 ++--
drivers/gpu/drm/ttm/ttm_bo_util.c | 4 ++--
drivers/gpu/drm/ttm/ttm_bo_vm.c | 2 +-
drivers/gpu/drm/ttm/ttm_pool.c | 2 +-
drivers/gpu/drm/ttm/ttm_tt.c | 24 ++++++++++++------------
include/drm/ttm/ttm_device.h | 2 +-
include/drm/ttm/ttm_tt.h | 18 +++++++++---------
11 files changed, 42 insertions(+), 42 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 438377a89aa3..0cf94421665f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -894,7 +894,7 @@ static int amdgpu_ttm_backend_bind(struct ttm_device *bdev,
DRM_ERROR("failed to pin userptr\n");
return r;
}
- } else if (ttm->page_flags & TTM_PAGE_FLAG_SG) {
+ } else if (ttm->page_flags & TTM_TT_FLAG_EXTERNAL) {
if (!ttm->sg) {
struct dma_buf_attachment *attach;
struct sg_table *sgt;
@@ -1130,7 +1130,7 @@ static int amdgpu_ttm_tt_populate(struct ttm_device *bdev,
return 0;
}

- if (ttm->page_flags & TTM_PAGE_FLAG_SG)
+ if (ttm->page_flags & TTM_TT_FLAG_EXTERNAL)
return 0;

ret = ttm_pool_alloc(&adev->mman.bdev.pool, ttm, ctx);
@@ -1165,7 +1165,7 @@ static void amdgpu_ttm_tt_unpopulate(struct ttm_device *bdev,
return;
}

- if (ttm->page_flags & TTM_PAGE_FLAG_SG)
+ if (ttm->page_flags & TTM_TT_FLAG_EXTERNAL)
return;

for (i = 0; i < ttm->num_pages; ++i)
@@ -1198,8 +1198,8 @@ int amdgpu_ttm_tt_set_userptr(struct ttm_buffer_object *bo,
return -ENOMEM;
}

- /* Set TTM_PAGE_FLAG_SG before populate but after create. */
- bo->ttm->page_flags |= TTM_PAGE_FLAG_SG;
+ /* Set TTM_TT_FLAG_EXTERNAL before populate but after create. */
+ bo->ttm->page_flags |= TTM_TT_FLAG_EXTERNAL;

gtt = (void *)bo->ttm;
gtt->userptr = addr;
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
index 2f672f06b169..fd5b925b27c5 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
@@ -182,7 +182,7 @@ static struct ttm_tt *i915_ttm_tt_create(struct ttm_buffer_object *bo,

if (obj->flags & I915_BO_ALLOC_CPU_CLEAR &&
man->use_tt)
- page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC;
+ page_flags |= TTM_TT_FLAG_ZERO_ALLOC;

ret = ttm_tt_init(&i915_tt->ttm, bo, page_flags,
i915_ttm_select_tt_caching(obj));
@@ -546,7 +546,7 @@ static int i915_ttm_move(struct ttm_buffer_object *bo, bool evict,
}

/* Populate ttm with pages if needed. Typically system memory. */
- if (ttm && (dst_man->use_tt || (ttm->page_flags & TTM_PAGE_FLAG_SWAPPED))) {
+ if (ttm && (dst_man->use_tt || (ttm->page_flags & TTM_TT_FLAG_SWAPPED))) {
ret = ttm_tt_populate(bo->bdev, ttm, ctx);
if (ret)
return ret;
@@ -557,7 +557,7 @@ static int i915_ttm_move(struct ttm_buffer_object *bo, bool evict,
return PTR_ERR(dst_st);

clear = !cpu_maps_iomem(bo->resource) && (!ttm || !ttm_tt_is_populated(ttm));
- if (!(clear && ttm && !(ttm->page_flags & TTM_PAGE_FLAG_ZERO_ALLOC)))
+ if (!(clear && ttm && !(ttm->page_flags & TTM_TT_FLAG_ZERO_ALLOC)))
__i915_ttm_move(bo, clear, dst_mem, dst_st);

ttm_bo_move_sync_cleanup(bo, dst_mem);
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index d3b21d318b42..12b107acb6ee 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -1250,7 +1250,7 @@ nouveau_ttm_tt_populate(struct ttm_device *bdev,
struct ttm_tt *ttm_dma = (void *)ttm;
struct nouveau_drm *drm;
struct device *dev;
- bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
+ bool slave = !!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL);

if (ttm_tt_is_populated(ttm))
return 0;
@@ -1273,7 +1273,7 @@ nouveau_ttm_tt_unpopulate(struct ttm_device *bdev,
{
struct nouveau_drm *drm;
struct device *dev;
- bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
+ bool slave = !!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL);

if (slave)
return;
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index 7793249bc549..11b21d605584 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -545,14 +545,14 @@ static int radeon_ttm_tt_populate(struct ttm_device *bdev,
{
struct radeon_device *rdev = radeon_get_rdev(bdev);
struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(rdev, ttm);
- bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
+ bool slave = !!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL);

if (gtt && gtt->userptr) {
ttm->sg = kzalloc(sizeof(struct sg_table), GFP_KERNEL);
if (!ttm->sg)
return -ENOMEM;

- ttm->page_flags |= TTM_PAGE_FLAG_SG;
+ ttm->page_flags |= TTM_TT_FLAG_EXTERNAL;
return 0;
}

@@ -569,13 +569,13 @@ static void radeon_ttm_tt_unpopulate(struct ttm_device *bdev, struct ttm_tt *ttm
{
struct radeon_device *rdev = radeon_get_rdev(bdev);
struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(rdev, ttm);
- bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
+ bool slave = !!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL);

radeon_ttm_tt_unbind(bdev, ttm);

if (gtt && gtt->userptr) {
kfree(ttm->sg);
- ttm->page_flags &= ~TTM_PAGE_FLAG_SG;
+ ttm->page_flags &= ~TTM_TT_FLAG_EXTERNAL;
return;
}

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 3b22c0013dbf..d62b2013c367 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1115,8 +1115,8 @@ int ttm_bo_swapout(struct ttm_buffer_object *bo, struct ttm_operation_ctx *ctx,
return -EBUSY;

if (!bo->ttm || !ttm_tt_is_populated(bo->ttm) ||
- bo->ttm->page_flags & TTM_PAGE_FLAG_SG ||
- bo->ttm->page_flags & TTM_PAGE_FLAG_SWAPPED ||
+ bo->ttm->page_flags & TTM_TT_FLAG_EXTERNAL ||
+ bo->ttm->page_flags & TTM_TT_FLAG_SWAPPED ||
!ttm_bo_get_unless_zero(bo)) {
if (locked)
dma_resv_unlock(bo->base.resv);
diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c
index c893c3db2623..a342d701c91c 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_util.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
@@ -147,7 +147,7 @@ int ttm_bo_move_memcpy(struct ttm_buffer_object *bo,
bool clear;
int ret = 0;

- if (ttm && ((ttm->page_flags & TTM_PAGE_FLAG_SWAPPED) ||
+ if (ttm && ((ttm->page_flags & TTM_TT_FLAG_SWAPPED) ||
dst_man->use_tt)) {
ret = ttm_tt_populate(bdev, ttm, ctx);
if (ret)
@@ -169,7 +169,7 @@ int ttm_bo_move_memcpy(struct ttm_buffer_object *bo,
}

clear = src_iter->ops->maps_tt && (!ttm || !ttm_tt_is_populated(ttm));
- if (!(clear && ttm && !(ttm->page_flags & TTM_PAGE_FLAG_ZERO_ALLOC)))
+ if (!(clear && ttm && !(ttm->page_flags & TTM_TT_FLAG_ZERO_ALLOC)))
ttm_move_memcpy(clear, dst_mem->num_pages, dst_iter, src_iter);

if (!src_iter->ops->maps_tt)
diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c
index 9a2119fe4bdd..950f4f132802 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_vm.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c
@@ -162,7 +162,7 @@ vm_fault_t ttm_bo_vm_reserve(struct ttm_buffer_object *bo,
* Refuse to fault imported pages. This should be handled
* (if at all) by redirecting mmap to the exporter.
*/
- if (bo->ttm && (bo->ttm->page_flags & TTM_PAGE_FLAG_SG)) {
+ if (bo->ttm && (bo->ttm->page_flags & TTM_TT_FLAG_EXTERNAL)) {
dma_resv_unlock(bo->base.resv);
return VM_FAULT_SIGBUS;
}
diff --git a/drivers/gpu/drm/ttm/ttm_pool.c b/drivers/gpu/drm/ttm/ttm_pool.c
index c961a788b519..1bba0a0ed3f9 100644
--- a/drivers/gpu/drm/ttm/ttm_pool.c
+++ b/drivers/gpu/drm/ttm/ttm_pool.c
@@ -371,7 +371,7 @@ int ttm_pool_alloc(struct ttm_pool *pool, struct ttm_tt *tt,
WARN_ON(!num_pages || ttm_tt_is_populated(tt));
WARN_ON(dma_addr && !pool->dev);

- if (tt->page_flags & TTM_PAGE_FLAG_ZERO_ALLOC)
+ if (tt->page_flags & TTM_TT_FLAG_ZERO_ALLOC)
gfp_flags |= __GFP_ZERO;

if (ctx->gfp_retry_mayfail)
diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index 980ecb079b2c..86f31fde6e35 100644
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -68,12 +68,12 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc)
switch (bo->type) {
case ttm_bo_type_device:
if (zero_alloc)
- page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC;
+ page_flags |= TTM_TT_FLAG_ZERO_ALLOC;
break;
case ttm_bo_type_kernel:
break;
case ttm_bo_type_sg:
- page_flags |= TTM_PAGE_FLAG_SG;
+ page_flags |= TTM_TT_FLAG_EXTERNAL;
break;
default:
pr_err("Illegal buffer object type\n");
@@ -156,7 +156,7 @@ EXPORT_SYMBOL(ttm_tt_init);

void ttm_tt_fini(struct ttm_tt *ttm)
{
- WARN_ON(ttm->page_flags & TTM_PAGE_FLAG_PRIV_POPULATED);
+ WARN_ON(ttm->page_flags & TTM_TT_FLAG_PRIV_POPULATED);

if (ttm->swap_storage)
fput(ttm->swap_storage);
@@ -178,7 +178,7 @@ int ttm_sg_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo,

ttm_tt_init_fields(ttm, bo, page_flags, caching);

- if (page_flags & TTM_PAGE_FLAG_SG)
+ if (page_flags & TTM_TT_FLAG_EXTERNAL)
ret = ttm_sg_tt_alloc_page_directory(ttm);
else
ret = ttm_dma_tt_alloc_page_directory(ttm);
@@ -224,7 +224,7 @@ int ttm_tt_swapin(struct ttm_tt *ttm)

fput(swap_storage);
ttm->swap_storage = NULL;
- ttm->page_flags &= ~TTM_PAGE_FLAG_SWAPPED;
+ ttm->page_flags &= ~TTM_TT_FLAG_SWAPPED;

return 0;

@@ -279,7 +279,7 @@ int ttm_tt_swapout(struct ttm_device *bdev, struct ttm_tt *ttm,

ttm_tt_unpopulate(bdev, ttm);
ttm->swap_storage = swap_storage;
- ttm->page_flags |= TTM_PAGE_FLAG_SWAPPED;
+ ttm->page_flags |= TTM_TT_FLAG_SWAPPED;

return ttm->num_pages;

@@ -300,7 +300,7 @@ int ttm_tt_populate(struct ttm_device *bdev,
if (ttm_tt_is_populated(ttm))
return 0;

- if (!(ttm->page_flags & TTM_PAGE_FLAG_SG)) {
+ if (!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL)) {
atomic_long_add(ttm->num_pages, &ttm_pages_allocated);
if (bdev->pool.use_dma32)
atomic_long_add(ttm->num_pages,
@@ -325,8 +325,8 @@ int ttm_tt_populate(struct ttm_device *bdev,
if (ret)
goto error;

- ttm->page_flags |= TTM_PAGE_FLAG_PRIV_POPULATED;
- if (unlikely(ttm->page_flags & TTM_PAGE_FLAG_SWAPPED)) {
+ ttm->page_flags |= TTM_TT_FLAG_PRIV_POPULATED;
+ if (unlikely(ttm->page_flags & TTM_TT_FLAG_SWAPPED)) {
ret = ttm_tt_swapin(ttm);
if (unlikely(ret != 0)) {
ttm_tt_unpopulate(bdev, ttm);
@@ -337,7 +337,7 @@ int ttm_tt_populate(struct ttm_device *bdev,
return 0;

error:
- if (!(ttm->page_flags & TTM_PAGE_FLAG_SG)) {
+ if (!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL)) {
atomic_long_sub(ttm->num_pages, &ttm_pages_allocated);
if (bdev->pool.use_dma32)
atomic_long_sub(ttm->num_pages,
@@ -357,14 +357,14 @@ void ttm_tt_unpopulate(struct ttm_device *bdev, struct ttm_tt *ttm)
else
ttm_pool_free(&bdev->pool, ttm);

- if (!(ttm->page_flags & TTM_PAGE_FLAG_SG)) {
+ if (!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL)) {
atomic_long_sub(ttm->num_pages, &ttm_pages_allocated);
if (bdev->pool.use_dma32)
atomic_long_sub(ttm->num_pages,
&ttm_dma32_pages_allocated);
}

- ttm->page_flags &= ~TTM_PAGE_FLAG_PRIV_POPULATED;
+ ttm->page_flags &= ~TTM_TT_FLAG_PRIV_POPULATED;
}

#ifdef CONFIG_DEBUG_FS
diff --git a/include/drm/ttm/ttm_device.h b/include/drm/ttm/ttm_device.h
index cbe03d45e883..0a4ddec78d8f 100644
--- a/include/drm/ttm/ttm_device.h
+++ b/include/drm/ttm/ttm_device.h
@@ -65,7 +65,7 @@ struct ttm_device_funcs {
* ttm_tt_create
*
* @bo: The buffer object to create the ttm for.
- * @page_flags: Page flags as identified by TTM_PAGE_FLAG_XX flags.
+ * @page_flags: Page flags as identified by TTM_TT_FLAG_XX flags.
*
* Create a struct ttm_tt to back data with system memory pages.
* No pages are actually allocated.
diff --git a/include/drm/ttm/ttm_tt.h b/include/drm/ttm/ttm_tt.h
index 842ce756213c..b023cd58ff38 100644
--- a/include/drm/ttm/ttm_tt.h
+++ b/include/drm/ttm/ttm_tt.h
@@ -38,17 +38,17 @@ struct ttm_resource;
struct ttm_buffer_object;
struct ttm_operation_ctx;

-#define TTM_PAGE_FLAG_SWAPPED (1 << 4)
-#define TTM_PAGE_FLAG_ZERO_ALLOC (1 << 6)
-#define TTM_PAGE_FLAG_SG (1 << 8)
+#define TTM_TT_FLAG_SWAPPED (1 << 0)
+#define TTM_TT_FLAG_ZERO_ALLOC (1 << 1)
+#define TTM_TT_FLAG_EXTERNAL (1 << 2)

-#define TTM_PAGE_FLAG_PRIV_POPULATED (1 << 31)
+#define TTM_TT_FLAG_PRIV_POPULATED (1 << 31)

/**
* struct ttm_tt
*
* @pages: Array of pages backing the data.
- * @page_flags: see TTM_PAGE_FLAG_*
+ * @page_flags: see TTM_TT_FLAG_*
* @num_pages: Number of pages in the page array.
* @sg: for SG objects via dma-buf
* @dma_address: The DMA (bus) addresses of the pages
@@ -84,7 +84,7 @@ struct ttm_kmap_iter_tt {

static inline bool ttm_tt_is_populated(struct ttm_tt *tt)
{
- return tt->page_flags & TTM_PAGE_FLAG_PRIV_POPULATED;
+ return tt->page_flags & TTM_TT_FLAG_PRIV_POPULATED;
}

/**
@@ -103,7 +103,7 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc);
*
* @ttm: The struct ttm_tt.
* @bo: The buffer object we create the ttm for.
- * @page_flags: Page flags as identified by TTM_PAGE_FLAG_XX flags.
+ * @page_flags: Page flags as identified by TTM_TT_FLAG_XX flags.
* @caching: the desired caching state of the pages
*
* Create a struct ttm_tt to back data with system memory pages.
@@ -178,7 +178,7 @@ void ttm_tt_unpopulate(struct ttm_device *bdev, struct ttm_tt *ttm);
*/
static inline void ttm_tt_mark_for_clear(struct ttm_tt *ttm)
{
- ttm->page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC;
+ ttm->page_flags |= TTM_TT_FLAG_ZERO_ALLOC;
}

void ttm_tt_mgr_init(unsigned long num_pages, unsigned long num_dma32_pages);
@@ -194,7 +194,7 @@ struct ttm_kmap_iter *ttm_kmap_iter_tt_init(struct ttm_kmap_iter_tt *iter_tt,
*
* @bo: Buffer object we allocate the ttm for.
* @bridge: The agp bridge this device is sitting on.
- * @page_flags: Page flags as identified by TTM_PAGE_FLAG_XX flags.
+ * @page_flags: Page flags as identified by TTM_TT_FLAG_XX flags.
*
*
* Create a TTM backend that uses the indicated AGP bridge as an aperture
--
2.26.3