From: Matthew Auld <matthew.auld@xxxxxxxxx>
For local-memory objects we need to align the GTT addresses
to 64K, both for the ppgtt and ggtt.
We need to support vm->min_alignment > 4K, depending
on the vm itself and the type of object we are inserting.
With this in mind update the GTT selftests to take this
into account.
Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
---
.../i915/gem/selftests/i915_gem_client_blt.c | 23 +++--
drivers/gpu/drm/i915/gt/intel_gtt.c | 9 ++
drivers/gpu/drm/i915/gt/intel_gtt.h | 9 ++
drivers/gpu/drm/i915/i915_vma.c | 9 +-
drivers/gpu/drm/i915/selftests/i915_gem_gtt.c | 96 ++++++++++++-------
5 files changed, 103 insertions(+), 43 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_client_blt.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_client_blt.c
index 8402ed925a69..6b9b861e43e5 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_client_blt.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_client_blt.c
@@ -39,6 +39,7 @@ struct tiled_blits {
struct blit_buffer scratch;
struct i915_vma *batch;
u64 hole;
+ u64 align;
u32 width;
u32 height;
};
@@ -410,14 +411,21 @@ tiled_blits_create(struct intel_engine_cs *engine, struct rnd_state *prng)
goto err_free;
}
- hole_size = 2 * PAGE_ALIGN(WIDTH * HEIGHT * 4);
+ t->align = I915_GTT_PAGE_SIZE_2M; /* XXX worst case, derive from vm! */
+ t->align = max(t->align,
+ i915_vm_min_alignment(t->ce->vm, INTEL_MEMORY_LOCAL));
+ t->align = max(t->align,
+ i915_vm_min_alignment(t->ce->vm, INTEL_MEMORY_SYSTEM));
+
+ hole_size = 2 * round_up(WIDTH * HEIGHT * 4, t->align);
hole_size *= 2; /* room to maneuver */
- hole_size += 2 * I915_GTT_MIN_ALIGNMENT;
+ hole_size += 2 * t->align; /* padding on either side */
mutex_lock(&t->ce->vm->mutex);
memset(&hole, 0, sizeof(hole));
err = drm_mm_insert_node_in_range(&t->ce->vm->mm, &hole,
- hole_size, 0, I915_COLOR_UNEVICTABLE,
+ hole_size, t->align,
+ I915_COLOR_UNEVICTABLE,
0, U64_MAX,
DRM_MM_INSERT_BEST);
if (!err)
@@ -428,7 +436,7 @@ tiled_blits_create(struct intel_engine_cs *engine, struct rnd_state *prng)
goto err_put;
}
- t->hole = hole.start + I915_GTT_MIN_ALIGNMENT;
+ t->hole = hole.start + t->align;
pr_info("Using hole at %llx\n", t->hole);
err = tiled_blits_create_buffers(t, WIDTH, HEIGHT, prng);
@@ -455,7 +463,7 @@ static void tiled_blits_destroy(struct tiled_blits *t)
static int tiled_blits_prepare(struct tiled_blits *t,
struct rnd_state *prng)
{
- u64 offset = PAGE_ALIGN(t->width * t->height * 4);
+ u64 offset = round_up(t->width * t->height * 4, t->align);
u32 *map;
int err;
int i;
@@ -486,8 +494,7 @@ static int tiled_blits_prepare(struct tiled_blits *t,
static int tiled_blits_bounce(struct tiled_blits *t, struct rnd_state *prng)
{
- u64 offset =
- round_up(t->width * t->height * 4, 2 * I915_GTT_MIN_ALIGNMENT);
+ u64 offset = round_up(t->width * t->height * 4, 2 * t->align);
int err;
/* We want to check position invariant tiling across GTT eviction */
@@ -500,7 +507,7 @@ static int tiled_blits_bounce(struct tiled_blits *t, struct rnd_state *prng)
/* Reposition so that we overlap the old addresses, and slightly off */
err = tiled_blit(t,
- &t->buffers[2], t->hole + I915_GTT_MIN_ALIGNMENT,
+ &t->buffers[2], t->hole + t->align,
&t->buffers[1], t->hole + 3 * offset / 2);
if (err)
return err;
diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.c b/drivers/gpu/drm/i915/gt/intel_gtt.c
index 67d14afa6623..89507ae5c3e1 100644
--- a/drivers/gpu/drm/i915/gt/intel_gtt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gtt.c
@@ -216,6 +216,15 @@ void i915_address_space_init(struct i915_address_space *vm, int subclass)
GEM_BUG_ON(!vm->total);
drm_mm_init(&vm->mm, 0, vm->total);
+
+ memset64(vm->min_alignment, I915_GTT_MIN_ALIGNMENT,
+ ARRAY_SIZE(vm->min_alignment));
+
+ if (HAS_64K_PAGES(vm->i915)) {
+ vm->min_alignment[INTEL_MEMORY_LOCAL] = I915_GTT_PAGE_SIZE_64K;
+ vm->min_alignment[INTEL_MEMORY_STOLEN_LOCAL] = I915_GTT_PAGE_SIZE_64K;
+ }
+
vm->mm.head_node.color = I915_COLOR_UNEVICTABLE;
INIT_LIST_HEAD(&vm->bound_list);
diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.h b/drivers/gpu/drm/i915/gt/intel_gtt.h
index bc6750263359..094bee934740 100644
--- a/drivers/gpu/drm/i915/gt/intel_gtt.h
+++ b/drivers/gpu/drm/i915/gt/intel_gtt.h
@@ -28,6 +28,8 @@
#include "gt/intel_reset.h"
#include "i915_selftest.h"
#include "i915_vma_types.h"
+#include "i915_params.h"
+#include "intel_memory_region.h"
#define I915_GFP_ALLOW_FAIL (GFP_KERNEL | __GFP_RETRY_MAYFAIL | __GFP_NOWARN)
@@ -221,6 +223,7 @@ struct i915_address_space {
struct device *dma;
u64 total; /* size addr space maps (ex. 2GB for ggtt) */
u64 reserved; /* size addr space reserved */
+ u64 min_alignment[INTEL_MEMORY_STOLEN_LOCAL + 1];
unsigned int bind_async_flags;
@@ -377,6 +380,12 @@ i915_vm_has_scratch_64K(struct i915_address_space *vm)
return vm->scratch_order == get_order(I915_GTT_PAGE_SIZE_64K);
}
+static inline u64 i915_vm_min_alignment(struct i915_address_space *vm,
+ enum intel_memory_type type)
+{
+ return vm->min_alignment[type];
+}
+
static inline bool
i915_vm_has_cache_coloring(struct i915_address_space *vm)
{
diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c
index 90546fa58fc1..c31b4bc8af16 100644
--- a/drivers/gpu/drm/i915/i915_vma.c
+++ b/drivers/gpu/drm/i915/i915_vma.c
@@ -670,8 +670,13 @@ i915_vma_insert(struct i915_vma *vma, u64 size, u64 alignment, u64 flags)
}
color = 0;
- if (vma->obj && i915_vm_has_cache_coloring(vma->vm))
- color = vma->obj->cache_level;
+ if (vma->obj) {
+ if (HAS_64K_PAGES(vma->vm->i915) && i915_gem_object_is_lmem(vma->obj))
+ alignment = max(alignment, I915_GTT_PAGE_SIZE_64K);
+
+ if (i915_vm_has_cache_coloring(vma->vm))
+ color = vma->obj->cache_level;
+ }
if (flags & PIN_OFFSET_FIXED) {
u64 offset = flags & PIN_OFFSET_MASK;
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
index 46f4236039a9..fdb4bf88293b 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
@@ -237,6 +237,8 @@ static int lowlevel_hole(struct i915_address_space *vm,
u64 hole_start, u64 hole_end,
unsigned long end_time)
{
+ const unsigned int min_alignment =
+ i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM);
I915_RND_STATE(seed_prng);
struct i915_vma *mock_vma;
unsigned int size;
@@ -250,9 +252,10 @@ static int lowlevel_hole(struct i915_address_space *vm,
I915_RND_SUBSTATE(prng, seed_prng);
struct drm_i915_gem_object *obj;
unsigned int *order, count, n;
- u64 hole_size;
+ u64 hole_size, aligned_size;
- hole_size = (hole_end - hole_start) >> size;
+ aligned_size = max_t(u32, ilog2(min_alignment), size);
+ hole_size = (hole_end - hole_start) >> aligned_size;
if (hole_size > KMALLOC_MAX_SIZE / sizeof(u32))
hole_size = KMALLOC_MAX_SIZE / sizeof(u32);
count = hole_size >> 1;
@@ -273,8 +276,8 @@ static int lowlevel_hole(struct i915_address_space *vm,
}
GEM_BUG_ON(!order);
- GEM_BUG_ON(count * BIT_ULL(size) > vm->total);
- GEM_BUG_ON(hole_start + count * BIT_ULL(size) > hole_end);
+ GEM_BUG_ON(count * BIT_ULL(aligned_size) > vm->total);
+ GEM_BUG_ON(hole_start + count * BIT_ULL(aligned_size) > hole_end);
/* Ignore allocation failures (i.e. don't report them as
* a test failure) as we are purposefully allocating very
@@ -297,10 +300,10 @@ static int lowlevel_hole(struct i915_address_space *vm,
}
for (n = 0; n < count; n++) {
- u64 addr = hole_start + order[n] * BIT_ULL(size);
+ u64 addr = hole_start + order[n] * BIT_ULL(aligned_size);
intel_wakeref_t wakeref;
- GEM_BUG_ON(addr + BIT_ULL(size) > vm->total);
+ GEM_BUG_ON(addr + BIT_ULL(aligned_size) > vm->total);
if (igt_timeout(end_time,
"%s timed out before %d/%d\n",
@@ -343,7 +346,7 @@ static int lowlevel_hole(struct i915_address_space *vm,
}
mock_vma->pages = obj->mm.pages;
- mock_vma->node.size = BIT_ULL(size);
+ mock_vma->node.size = BIT_ULL(aligned_size);
mock_vma->node.start = addr;
with_intel_runtime_pm(vm->gt->uncore->rpm, wakeref)
@@ -354,7 +357,7 @@ static int lowlevel_hole(struct i915_address_space *vm,
i915_random_reorder(order, count, &prng);
for (n = 0; n < count; n++) {
- u64 addr = hole_start + order[n] * BIT_ULL(size);
+ u64 addr = hole_start + order[n] * BIT_ULL(aligned_size);
intel_wakeref_t wakeref;
GEM_BUG_ON(addr + BIT_ULL(size) > vm->total);
@@ -398,8 +401,10 @@ static int fill_hole(struct i915_address_space *vm,
{
const u64 hole_size = hole_end - hole_start;
struct drm_i915_gem_object *obj;
+ const unsigned int min_alignment =
+ i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM);
const unsigned long max_pages =
- min_t(u64, ULONG_MAX - 1, hole_size/2 >> PAGE_SHIFT);
+ min_t(u64, ULONG_MAX - 1, (hole_size / 2) >> ilog2(min_alignment));
const unsigned long max_step = max(int_sqrt(max_pages), 2UL);
unsigned long npages, prime, flags;
struct i915_vma *vma;
@@ -440,14 +445,17 @@ static int fill_hole(struct i915_address_space *vm,
offset = p->offset;
list_for_each_entry(obj, &objects, st_link) {
+ u64 aligned_size = round_up(obj->base.size,
+ min_alignment);
+
vma = i915_vma_instance(obj, vm, NULL);
if (IS_ERR(vma))
continue;
if (p->step < 0) {
- if (offset < hole_start + obj->base.size)
+ if (offset < hole_start + aligned_size)
break;
- offset -= obj->base.size;
+ offset -= aligned_size;
}
err = i915_vma_pin(vma, 0, 0, offset | flags);
@@ -469,22 +477,25 @@ static int fill_hole(struct i915_address_space *vm,
i915_vma_unpin(vma);
if (p->step > 0) {
- if (offset + obj->base.size > hole_end)
+ if (offset + aligned_size > hole_end)
break;
- offset += obj->base.size;
+ offset += aligned_size;
}
}
offset = p->offset;
list_for_each_entry(obj, &objects, st_link) {
+ u64 aligned_size = round_up(obj->base.size,
+ min_alignment);
+
vma = i915_vma_instance(obj, vm, NULL);
if (IS_ERR(vma))
continue;
if (p->step < 0) {
- if (offset < hole_start + obj->base.size)
+ if (offset < hole_start + aligned_size)
break;
- offset -= obj->base.size;
+ offset -= aligned_size;
}
if (!drm_mm_node_allocated(&vma->node) ||
@@ -505,22 +516,25 @@ static int fill_hole(struct i915_address_space *vm,
}
if (p->step > 0) {
- if (offset + obj->base.size > hole_end)
+ if (offset + aligned_size > hole_end)
break;
- offset += obj->base.size;
+ offset += aligned_size;
}
}
offset = p->offset;
list_for_each_entry_reverse(obj, &objects, st_link) {
+ u64 aligned_size = round_up(obj->base.size,
+ min_alignment);
+
vma = i915_vma_instance(obj, vm, NULL);
if (IS_ERR(vma))
continue;
if (p->step < 0) {
- if (offset < hole_start + obj->base.size)
+ if (offset < hole_start + aligned_size)
break;
- offset -= obj->base.size;
+ offset -= aligned_size;
}
err = i915_vma_pin(vma, 0, 0, offset | flags);
@@ -542,22 +556,25 @@ static int fill_hole(struct i915_address_space *vm,
i915_vma_unpin(vma);
if (p->step > 0) {
- if (offset + obj->base.size > hole_end)
+ if (offset + aligned_size > hole_end)
break;
- offset += obj->base.size;
+ offset += aligned_size;
}
}
offset = p->offset;
list_for_each_entry_reverse(obj, &objects, st_link) {
+ u64 aligned_size = round_up(obj->base.size,
+ min_alignment);
+
vma = i915_vma_instance(obj, vm, NULL);
if (IS_ERR(vma))
continue;
if (p->step < 0) {
- if (offset < hole_start + obj->base.size)
+ if (offset < hole_start + aligned_size)
break;
- offset -= obj->base.size;
+ offset -= aligned_size;
}
if (!drm_mm_node_allocated(&vma->node) ||
@@ -578,9 +595,9 @@ static int fill_hole(struct i915_address_space *vm,
}
if (p->step > 0) {
- if (offset + obj->base.size > hole_end)
+ if (offset + aligned_size > hole_end)
break;
- offset += obj->base.size;
+ offset += aligned_size;
}
}
}
@@ -610,6 +627,7 @@ static int walk_hole(struct i915_address_space *vm,
const u64 hole_size = hole_end - hole_start;
const unsigned long max_pages =
min_t(u64, ULONG_MAX - 1, hole_size >> PAGE_SHIFT);
+ unsigned long min_alignment;
unsigned long flags;
u64 size;
@@ -619,6 +637,8 @@ static int walk_hole(struct i915_address_space *vm,
if (i915_is_ggtt(vm))
flags |= PIN_GLOBAL;
+ min_alignment = i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM);
+
for_each_prime_number_from(size, 1, max_pages) {
struct drm_i915_gem_object *obj;
struct i915_vma *vma;
@@ -637,7 +657,7 @@ static int walk_hole(struct i915_address_space *vm,
for (addr = hole_start;
addr + obj->base.size < hole_end;
- addr += obj->base.size) {
+ addr += round_up(obj->base.size, min_alignment)) {
err = i915_vma_pin(vma, 0, 0, addr | flags);
if (err) {
pr_err("%s bind failed at %llx + %llx [hole %llx- %llx] with err=%d\n",
@@ -689,6 +709,7 @@ static int pot_hole(struct i915_address_space *vm,
{
struct drm_i915_gem_object *obj;
struct i915_vma *vma;
+ unsigned int min_alignment;
unsigned long flags;
unsigned int pot;
int err = 0;
@@ -697,6 +718,8 @@ static int pot_hole(struct i915_address_space *vm,
if (i915_is_ggtt(vm))
flags |= PIN_GLOBAL;
+ min_alignment = i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM);
+
obj = i915_gem_object_create_internal(vm->i915, 2 * I915_GTT_PAGE_SIZE);
if (IS_ERR(obj))
return PTR_ERR(obj);
@@ -709,13 +732,13 @@ static int pot_hole(struct i915_address_space *vm,
/* Insert a pair of pages across every pot boundary within the hole */
for (pot = fls64(hole_end - 1) - 1;
- pot > ilog2(2 * I915_GTT_PAGE_SIZE);
+ pot > ilog2(2 * min_alignment);
pot--) {
u64 step = BIT_ULL(pot);
u64 addr;
- for (addr = round_up(hole_start + I915_GTT_PAGE_SIZE, step) - I915_GTT_PAGE_SIZE;
- addr <= round_down(hole_end - 2*I915_GTT_PAGE_SIZE, step) - I915_GTT_PAGE_SIZE;
+ for (addr = round_up(hole_start + min_alignment, step) - min_alignment;
+ addr <= round_down(hole_end - (2 * min_alignment), step) - min_alignment;
addr += step) {
err = i915_vma_pin(vma, 0, 0, addr | flags);
if (err) {
@@ -760,6 +783,7 @@ static int drunk_hole(struct i915_address_space *vm,
unsigned long end_time)
{
I915_RND_STATE(prng);
+ unsigned int min_alignment;
unsigned int size;
unsigned long flags;
@@ -767,15 +791,18 @@ static int drunk_hole(struct i915_address_space *vm,
if (i915_is_ggtt(vm))
flags |= PIN_GLOBAL;
+ min_alignment = i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM);
+
/* Keep creating larger objects until one cannot fit into the hole */
for (size = 12; (hole_end - hole_start) >> size; size++) {
struct drm_i915_gem_object *obj;
unsigned int *order, count, n;
struct i915_vma *vma;
- u64 hole_size;
+ u64 hole_size, aligned_size;
int err = -ENODEV;
- hole_size = (hole_end - hole_start) >> size;
+ aligned_size = max_t(u32, ilog2(min_alignment), size);
+ hole_size = (hole_end - hole_start) >> aligned_size;
if (hole_size > KMALLOC_MAX_SIZE / sizeof(u32))
hole_size = KMALLOC_MAX_SIZE / sizeof(u32);
count = hole_size >> 1;
@@ -815,7 +842,7 @@ static int drunk_hole(struct i915_address_space *vm,
GEM_BUG_ON(vma->size != BIT_ULL(size));
for (n = 0; n < count; n++) {
- u64 addr = hole_start + order[n] * BIT_ULL(size);
+ u64 addr = hole_start + order[n] * BIT_ULL(aligned_size);
err = i915_vma_pin(vma, 0, 0, addr | flags);
if (err) {
@@ -867,11 +894,14 @@ static int __shrink_hole(struct i915_address_space *vm,
{
struct drm_i915_gem_object *obj;
unsigned long flags = PIN_OFFSET_FIXED | PIN_USER;
+ unsigned int min_alignment;
unsigned int order = 12;
LIST_HEAD(objects);
int err = 0;
u64 addr;
+ min_alignment = i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM);
+
/* Keep creating larger objects until one cannot fit into the hole */
for (addr = hole_start; addr < hole_end; ) {
struct i915_vma *vma;
@@ -912,7 +942,7 @@ static int __shrink_hole(struct i915_address_space *vm,
}
i915_vma_unpin(vma);
- addr += size;
+ addr += round_up(size, min_alignment);
/*
* Since we are injecting allocation faults at random intervals,
--
2.20.1
