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Commit 71733207 authored by Chris Wilson's avatar Chris Wilson Committed by Daniel Vetter
Browse files

drm: Promote drm_mm alignment to u64 



In places (e.g. i915.ko), the alignment is exported to userspace as u64
and there now exists hardware for which we can indeed utilize a u64
alignment. As such, we need to keep 64bit integers throughout when
handling alignment.

Testcase: igt/drm_mm/align64
Testcase: igt/gem_exec_alignment
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Christian König <christian.koenig@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161222083641.2691-22-chris@chris-wilson.co.uk
parent d1bac3a7

drivers/gpu/drm/drm_mm.c

+17 −20
Original line number Diff line number Diff line
@@ -93,12 +93,12 @@ 


static struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm,

						u64 size,

						unsigned alignment,

						u64 alignment,

						unsigned long color,

						enum drm_mm_search_flags flags);

static struct drm_mm_node *drm_mm_search_free_in_range_generic(const struct drm_mm *mm,

						u64 size,

						unsigned alignment,

						u64 alignment,

						unsigned long color,

						u64 start,

						u64 end,
@@ -227,7 +227,7 @@ static void drm_mm_interval_tree_add_node(struct drm_mm_node *hole_node, 


static void drm_mm_insert_helper(struct drm_mm_node *hole_node,

				 struct drm_mm_node *node,

				 u64 size, unsigned alignment,

				 u64 size, u64 alignment,

				 unsigned long color,

				 enum drm_mm_allocator_flags flags)

{
@@ -246,10 +246,9 @@ static void drm_mm_insert_helper(struct drm_mm_node *hole_node, 
		adj_start = adj_end - size;



	if (alignment) {

		u64 tmp = adj_start;

		unsigned rem;

		u64 rem;



		rem = do_div(tmp, alignment);

		div64_u64_rem(adj_start, alignment, &rem);

		if (rem) {

			if (flags & DRM_MM_CREATE_TOP)

				adj_start -= rem;
@@ -376,7 +375,7 @@ EXPORT_SYMBOL(drm_mm_reserve_node); 
 * 0 on success, -ENOSPC if there's no suitable hole.

 */

int drm_mm_insert_node_generic(struct drm_mm *mm, struct drm_mm_node *node,

			       u64 size, unsigned alignment,

			       u64 size, u64 alignment,

			       unsigned long color,

			       enum drm_mm_search_flags sflags,

			       enum drm_mm_allocator_flags aflags)
@@ -398,7 +397,7 @@ EXPORT_SYMBOL(drm_mm_insert_node_generic); 


static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node,

				       struct drm_mm_node *node,

				       u64 size, unsigned alignment,

				       u64 size, u64 alignment,

				       unsigned long color,

				       u64 start, u64 end,

				       enum drm_mm_allocator_flags flags)
@@ -423,10 +422,9 @@ static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node, 
		adj_start = adj_end - size;



	if (alignment) {

		u64 tmp = adj_start;

		unsigned rem;

		u64 rem;



		rem = do_div(tmp, alignment);

		div64_u64_rem(adj_start, alignment, &rem);

		if (rem) {

			if (flags & DRM_MM_CREATE_TOP)

				adj_start -= rem;
@@ -482,7 +480,7 @@ static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node, 
 * 0 on success, -ENOSPC if there's no suitable hole.

 */

int drm_mm_insert_node_in_range_generic(struct drm_mm *mm, struct drm_mm_node *node,

					u64 size, unsigned alignment,

					u64 size, u64 alignment,

					unsigned long color,

					u64 start, u64 end,

					enum drm_mm_search_flags sflags,
@@ -548,16 +546,15 @@ void drm_mm_remove_node(struct drm_mm_node *node) 
}

EXPORT_SYMBOL(drm_mm_remove_node);



static int check_free_hole(u64 start, u64 end, u64 size, unsigned alignment)

static int check_free_hole(u64 start, u64 end, u64 size, u64 alignment)

{

	if (end - start < size)

		return 0;



	if (alignment) {

		u64 tmp = start;

		unsigned rem;

		u64 rem;



		rem = do_div(tmp, alignment);

		div64_u64_rem(start, alignment, &rem);

		if (rem)

			start += alignment - rem;

	}
@@ -567,7 +564,7 @@ static int check_free_hole(u64 start, u64 end, u64 size, unsigned alignment) 


static struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm,

						      u64 size,

						      unsigned alignment,

						      u64 alignment,

						      unsigned long color,

						      enum drm_mm_search_flags flags)

{
@@ -609,7 +606,7 @@ static struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm, 


static struct drm_mm_node *drm_mm_search_free_in_range_generic(const struct drm_mm *mm,

							u64 size,

							unsigned alignment,

							u64 alignment,

							unsigned long color,

							u64 start,

							u64 end,
@@ -729,7 +726,7 @@ EXPORT_SYMBOL(drm_mm_replace_node); 
 */

void drm_mm_init_scan(struct drm_mm *mm,

		      u64 size,

		      unsigned alignment,

		      u64 alignment,

		      unsigned long color)

{

	mm->scan_color = color;
@@ -762,7 +759,7 @@ EXPORT_SYMBOL(drm_mm_init_scan); 
 */

void drm_mm_init_scan_with_range(struct drm_mm *mm,

				 u64 size,

				 unsigned alignment,

				 u64 alignment,

				 unsigned long color,

				 u64 start,

				 u64 end)

drivers/gpu/drm/selftests/test-drm_mm.c

+2 −2
Original line number Diff line number Diff line
@@ -1116,7 +1116,7 @@ static int igt_align64(void *ignored) 


static void show_scan(const struct drm_mm *scan)

{

	pr_info("scan: hit [%llx, %llx], size=%lld, align=%d, color=%ld\n",

	pr_info("scan: hit [%llx, %llx], size=%lld, align=%lld, color=%ld\n",

		scan->scan_hit_start, scan->scan_hit_end,

		scan->scan_size, scan->scan_alignment, scan->scan_color);

}
@@ -1178,7 +1178,7 @@ static bool evict_nodes(struct drm_mm *mm, 
			list_del(&e->link);

	}

	if (list_empty(evict_list)) {

		pr_err("Failed to find eviction: size=%lld [avail=%d], align=%d (color=%lu)\n",

		pr_err("Failed to find eviction: size=%lld [avail=%d], align=%lld (color=%lu)\n",

		       mm->scan_size, count,

		       mm->scan_alignment,

		       mm->scan_color);

include/drm/drm_mm.h

+8 −8
Original line number Diff line number Diff line
@@ -98,12 +98,12 @@ struct drm_mm { 
	struct rb_root interval_tree;



	unsigned int scan_check_range : 1;

	unsigned scan_alignment;

	unsigned int scanned_blocks;

	unsigned long scan_color;

	u64 scan_alignment;

	u64 scan_size;

	u64 scan_hit_start;

	u64 scan_hit_end;

	unsigned scanned_blocks;

	u64 scan_start;

	u64 scan_end;

	struct drm_mm_node *prev_scanned_node;
@@ -261,7 +261,7 @@ int drm_mm_reserve_node(struct drm_mm *mm, struct drm_mm_node *node); 
int drm_mm_insert_node_generic(struct drm_mm *mm,

			       struct drm_mm_node *node,

			       u64 size,

			       unsigned alignment,

			       u64 alignment,

			       unsigned long color,

			       enum drm_mm_search_flags sflags,

			       enum drm_mm_allocator_flags aflags);
@@ -284,7 +284,7 @@ int drm_mm_insert_node_generic(struct drm_mm *mm, 
static inline int drm_mm_insert_node(struct drm_mm *mm,

				     struct drm_mm_node *node,

				     u64 size,

				     unsigned alignment,

				     u64 alignment,

				     enum drm_mm_search_flags flags)

{

	return drm_mm_insert_node_generic(mm, node, size, alignment, 0, flags,
@@ -294,7 +294,7 @@ static inline int drm_mm_insert_node(struct drm_mm *mm, 
int drm_mm_insert_node_in_range_generic(struct drm_mm *mm,

					struct drm_mm_node *node,

					u64 size,

					unsigned alignment,

					u64 alignment,

					unsigned long color,

					u64 start,

					u64 end,
@@ -321,7 +321,7 @@ int drm_mm_insert_node_in_range_generic(struct drm_mm *mm, 
static inline int drm_mm_insert_node_in_range(struct drm_mm *mm,

					      struct drm_mm_node *node,

					      u64 size,

					      unsigned alignment,

					      u64 alignment,

					      u64 start,

					      u64 end,

					      enum drm_mm_search_flags flags)
@@ -361,11 +361,11 @@ __drm_mm_interval_first(const struct drm_mm *mm, u64 start, u64 last); 


void drm_mm_init_scan(struct drm_mm *mm,

		      u64 size,

		      unsigned alignment,

		      u64 alignment,

		      unsigned long color);

void drm_mm_init_scan_with_range(struct drm_mm *mm,

				 u64 size,

				 unsigned alignment,

				 u64 alignment,

				 unsigned long color,

				 u64 start,

				 u64 end);