[Intel-gfx] [CI 2/3] drm/i915/selftests: Extend fault handler selftests to all memory regions
Chris Wilson
chris at chris-wilson.co.uk
Fri Jan 3 20:41:36 UTC 2020
From: Abdiel Janulgue <abdiel.janulgue at linux.intel.com>
Instead of testing individually our new fault handlers, iterate over all
memory regions and test all from one interface.
Signed-off-by: Abdiel Janulgue <abdiel.janulgue at linux.intel.com>
Cc: Matthew Auld <matthew.auld at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
---
.../drm/i915/gem/selftests/i915_gem_mman.c | 306 +++++++++++++-----
1 file changed, 218 insertions(+), 88 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
index cbf796da64e3..2a31f51be8d6 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
@@ -9,6 +9,7 @@
#include "gt/intel_engine_pm.h"
#include "gt/intel_gt.h"
#include "gt/intel_gt_pm.h"
+#include "gem/i915_gem_region.h"
#include "huge_gem_object.h"
#include "i915_selftest.h"
#include "selftests/i915_random.h"
@@ -725,114 +726,231 @@ static int igt_mmap_offset_exhaustion(void *arg)
goto out;
}
-#define expand32(x) (((x) << 0) | ((x) << 8) | ((x) << 16) | ((x) << 24))
-static int igt_mmap(void *arg, enum i915_mmap_type type)
+static int gtt_set(struct drm_i915_gem_object *obj)
{
- struct drm_i915_private *i915 = arg;
- struct drm_i915_gem_object *obj;
- struct i915_mmap_offset *mmo;
- struct vm_area_struct *area;
- unsigned long addr;
- void *vaddr;
- int err = 0, i;
+ struct i915_vma *vma;
+ void __iomem *map;
+ int err = 0;
- if (!i915_ggtt_has_aperture(&i915->ggtt))
- return 0;
+ vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, PIN_MAPPABLE);
+ if (IS_ERR(vma))
+ return PTR_ERR(vma);
- obj = i915_gem_object_create_internal(i915, PAGE_SIZE);
- if (IS_ERR(obj))
- return PTR_ERR(obj);
+ intel_gt_pm_get(vma->vm->gt);
+ map = i915_vma_pin_iomap(vma);
+ i915_vma_unpin(vma);
+ if (IS_ERR(map)) {
+ err = PTR_ERR(map);
+ goto out;
+ }
+
+ memset_io(map, POISON_INUSE, obj->base.size);
+ i915_vma_unpin_iomap(vma);
+
+out:
+ intel_gt_pm_put(vma->vm->gt);
+ return err;
+}
+
+static int gtt_check(struct drm_i915_gem_object *obj)
+{
+ struct i915_vma *vma;
+ void __iomem *map;
+ int err = 0;
+
+ vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, PIN_MAPPABLE);
+ if (IS_ERR(vma))
+ return PTR_ERR(vma);
- vaddr = i915_gem_object_pin_map(obj, I915_MAP_WB);
- if (IS_ERR(vaddr)) {
- err = PTR_ERR(vaddr);
+ intel_gt_pm_get(vma->vm->gt);
+ map = i915_vma_pin_iomap(vma);
+ i915_vma_unpin(vma);
+ if (IS_ERR(map)) {
+ err = PTR_ERR(map);
goto out;
}
- memset(vaddr, POISON_INUSE, PAGE_SIZE);
+
+ if (memchr_inv((void __force *)map, POISON_FREE, obj->base.size)) {
+ pr_err("%s: Write via mmap did not land in backing store (GTT)\n",
+ obj->mm.region->name);
+ err = -EINVAL;
+ }
+ i915_vma_unpin_iomap(vma);
+
+out:
+ intel_gt_pm_put(vma->vm->gt);
+ return err;
+}
+
+static int wc_set(struct drm_i915_gem_object *obj)
+{
+ void *vaddr;
+
+ vaddr = i915_gem_object_pin_map(obj, I915_MAP_WC);
+ if (IS_ERR(vaddr))
+ return PTR_ERR(vaddr);
+
+ memset(vaddr, POISON_INUSE, obj->base.size);
i915_gem_object_flush_map(obj);
i915_gem_object_unpin_map(obj);
- mmo = mmap_offset_attach(obj, type, NULL);
- if (IS_ERR(mmo)) {
- err = PTR_ERR(mmo);
- goto out;
+ return 0;
+}
+
+static int wc_check(struct drm_i915_gem_object *obj)
+{
+ void *vaddr;
+ int err = 0;
+
+ vaddr = i915_gem_object_pin_map(obj, I915_MAP_WC);
+ if (IS_ERR(vaddr))
+ return PTR_ERR(vaddr);
+
+ if (memchr_inv(vaddr, POISON_FREE, obj->base.size)) {
+ pr_err("%s: Write via mmap did not land in backing store (WC)\n",
+ obj->mm.region->name);
+ err = -EINVAL;
}
+ i915_gem_object_unpin_map(obj);
+
+ return err;
+}
+
+static bool can_mmap(struct drm_i915_gem_object *obj, enum i915_mmap_type type)
+{
+ if (type == I915_MMAP_TYPE_GTT &&
+ !i915_ggtt_has_aperture(&to_i915(obj->base.dev)->ggtt))
+ return false;
+
+ if (type != I915_MMAP_TYPE_GTT &&
+ !i915_gem_object_type_has(obj,
+ I915_GEM_OBJECT_HAS_STRUCT_PAGE |
+ I915_GEM_OBJECT_HAS_IOMEM))
+ return false;
+
+ return true;
+}
+
+#define expand32(x) (((x) << 0) | ((x) << 8) | ((x) << 16) | ((x) << 24))
+static int __igt_mmap(struct drm_i915_private *i915,
+ struct drm_i915_gem_object *obj,
+ enum i915_mmap_type type)
+{
+ struct i915_mmap_offset *mmo;
+ struct vm_area_struct *area;
+ unsigned long addr;
+ int err, i;
+
+ if (!can_mmap(obj, type))
+ return 0;
+
+ err = wc_set(obj);
+ if (err == -ENXIO)
+ err = gtt_set(obj);
+ if (err)
+ return err;
+
+ mmo = mmap_offset_attach(obj, type, NULL);
+ if (IS_ERR(mmo))
+ return PTR_ERR(mmo);
addr = igt_mmap_node(i915, &mmo->vma_node, 0, PROT_WRITE, MAP_SHARED);
- if (IS_ERR_VALUE(addr)) {
- err = addr;
- goto out;
- }
+ if (IS_ERR_VALUE(addr))
+ return addr;
- pr_debug("igt_mmap() @ %lx\n", addr);
+ pr_debug("igt_mmap(%s, %d) @ %lx\n", obj->mm.region->name, type, addr);
area = find_vma(current->mm, addr);
if (!area) {
- pr_err("Did not create a vm_area_struct for the mmap\n");
+ pr_err("%s: Did not create a vm_area_struct for the mmap\n",
+ obj->mm.region->name);
err = -EINVAL;
goto out_unmap;
}
if (area->vm_private_data != mmo) {
- pr_err("vm_area_struct did not point back to our mmap_offset object!\n");
+ pr_err("%s: vm_area_struct did not point back to our mmap_offset object!\n",
+ obj->mm.region->name);
err = -EINVAL;
goto out_unmap;
}
- for (i = 0; i < PAGE_SIZE / sizeof(u32); i++) {
+ for (i = 0; i < obj->base.size / sizeof(u32); i++) {
u32 __user *ux = u64_to_user_ptr((u64)(addr + i * sizeof(*ux)));
u32 x;
if (get_user(x, ux)) {
- pr_err("Unable to read from mmap, offset:%zd\n",
- i * sizeof(x));
+ pr_err("%s: Unable to read from mmap, offset:%zd\n",
+ obj->mm.region->name, i * sizeof(x));
err = -EFAULT;
- break;
+ goto out_unmap;
}
if (x != expand32(POISON_INUSE)) {
- pr_err("Read incorrect value from mmap, offset:%zd, found:%x, expected:%x\n",
+ pr_err("%s: Read incorrect value from mmap, offset:%zd, found:%x, expected:%x\n",
+ obj->mm.region->name,
i * sizeof(x), x, expand32(POISON_INUSE));
err = -EINVAL;
- break;
+ goto out_unmap;
}
x = expand32(POISON_FREE);
if (put_user(x, ux)) {
- pr_err("Unable to write to mmap, offset:%zd\n",
- i * sizeof(x));
+ pr_err("%s: Unable to write to mmap, offset:%zd\n",
+ obj->mm.region->name, i * sizeof(x));
err = -EFAULT;
- break;
+ goto out_unmap;
}
}
-out_unmap:
- vm_munmap(addr, PAGE_SIZE);
+ if (type == I915_MMAP_TYPE_GTT)
+ intel_gt_flush_ggtt_writes(&i915->gt);
- vaddr = i915_gem_object_pin_map(obj, I915_MAP_FORCE_WC);
- if (IS_ERR(vaddr)) {
- err = PTR_ERR(vaddr);
- goto out;
- }
- if (err == 0 && memchr_inv(vaddr, POISON_FREE, PAGE_SIZE)) {
- pr_err("Write via mmap did not land in backing store\n");
- err = -EINVAL;
- }
- i915_gem_object_unpin_map(obj);
+ err = wc_check(obj);
+ if (err == -ENXIO)
+ err = gtt_check(obj);
+out_unmap:
+ vm_munmap(addr, obj->base.size);
-out:
- i915_gem_object_put(obj);
return err;
}
-static int igt_mmap_gtt(void *arg)
+static int igt_mmap(void *arg)
{
- return igt_mmap(arg, I915_MMAP_TYPE_GTT);
-}
+ struct drm_i915_private *i915 = arg;
+ struct intel_memory_region *mr;
+ enum intel_region_id id;
-static int igt_mmap_cpu(void *arg)
-{
- return igt_mmap(arg, I915_MMAP_TYPE_WC);
+ for_each_memory_region(mr, i915, id) {
+ unsigned long sizes[] = {
+ PAGE_SIZE,
+ mr->min_page_size,
+ SZ_4M,
+ };
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(sizes); i++) {
+ struct drm_i915_gem_object *obj;
+ int err;
+
+ obj = i915_gem_object_create_region(mr, sizes[i], 0);
+ if (obj == ERR_PTR(-ENODEV))
+ continue;
+
+ if (IS_ERR(obj))
+ return PTR_ERR(obj);
+
+ err = __igt_mmap(i915, obj, I915_MMAP_TYPE_GTT);
+ if (err == 0)
+ err = __igt_mmap(i915, obj, I915_MMAP_TYPE_WC);
+
+ i915_gem_object_put(obj);
+ if (err)
+ return err;
+ }
+ }
+
+ return 0;
}
static int check_present_pte(pte_t *pte, unsigned long addr, void *data)
@@ -887,32 +1005,24 @@ static int prefault_range(u64 start, u64 len)
return __get_user(c, end - 1);
}
-static int igt_mmap_revoke(void *arg, enum i915_mmap_type type)
+static int __igt_mmap_revoke(struct drm_i915_private *i915,
+ struct drm_i915_gem_object *obj,
+ enum i915_mmap_type type)
{
- struct drm_i915_private *i915 = arg;
- struct drm_i915_gem_object *obj;
struct i915_mmap_offset *mmo;
unsigned long addr;
int err;
- if (!i915_ggtt_has_aperture(&i915->ggtt))
+ if (!can_mmap(obj, type))
return 0;
- obj = i915_gem_object_create_internal(i915, SZ_4M);
- if (IS_ERR(obj))
- return PTR_ERR(obj);
-
mmo = mmap_offset_attach(obj, type, NULL);
- if (IS_ERR(mmo)) {
- err = PTR_ERR(mmo);
- goto out;
- }
+ if (IS_ERR(mmo))
+ return PTR_ERR(mmo);
addr = igt_mmap_node(i915, &mmo->vma_node, 0, PROT_WRITE, MAP_SHARED);
- if (IS_ERR_VALUE(addr)) {
- err = addr;
- goto out;
- }
+ if (IS_ERR_VALUE(addr))
+ return addr;
err = prefault_range(addr, obj->base.size);
if (err)
@@ -922,8 +1032,10 @@ static int igt_mmap_revoke(void *arg, enum i915_mmap_type type)
!atomic_read(&obj->bind_count));
err = check_present(addr, obj->base.size);
- if (err)
+ if (err) {
+ pr_err("%s: was not present\n", obj->mm.region->name);
goto out_unmap;
+ }
/*
* After unbinding the object from the GGTT, its address may be reused
@@ -947,24 +1059,44 @@ static int igt_mmap_revoke(void *arg, enum i915_mmap_type type)
}
err = check_absent(addr, obj->base.size);
- if (err)
+ if (err) {
+ pr_err("%s: was not absent\n", obj->mm.region->name);
goto out_unmap;
+ }
out_unmap:
vm_munmap(addr, obj->base.size);
-out:
- i915_gem_object_put(obj);
+
return err;
}
-static int igt_mmap_gtt_revoke(void *arg)
+static int igt_mmap_revoke(void *arg)
{
- return igt_mmap_revoke(arg, I915_MMAP_TYPE_GTT);
-}
+ struct drm_i915_private *i915 = arg;
+ struct intel_memory_region *mr;
+ enum intel_region_id id;
-static int igt_mmap_cpu_revoke(void *arg)
-{
- return igt_mmap_revoke(arg, I915_MMAP_TYPE_WC);
+ for_each_memory_region(mr, i915, id) {
+ struct drm_i915_gem_object *obj;
+ int err;
+
+ obj = i915_gem_object_create_region(mr, PAGE_SIZE, 0);
+ if (obj == ERR_PTR(-ENODEV))
+ continue;
+
+ if (IS_ERR(obj))
+ return PTR_ERR(obj);
+
+ err = __igt_mmap_revoke(i915, obj, I915_MMAP_TYPE_GTT);
+ if (err == 0)
+ err = __igt_mmap_revoke(i915, obj, I915_MMAP_TYPE_WC);
+
+ i915_gem_object_put(obj);
+ if (err)
+ return err;
+ }
+
+ return 0;
}
int i915_gem_mman_live_selftests(struct drm_i915_private *i915)
@@ -973,10 +1105,8 @@ int i915_gem_mman_live_selftests(struct drm_i915_private *i915)
SUBTEST(igt_partial_tiling),
SUBTEST(igt_smoke_tiling),
SUBTEST(igt_mmap_offset_exhaustion),
- SUBTEST(igt_mmap_gtt),
- SUBTEST(igt_mmap_cpu),
- SUBTEST(igt_mmap_gtt_revoke),
- SUBTEST(igt_mmap_cpu_revoke),
+ SUBTEST(igt_mmap),
+ SUBTEST(igt_mmap_revoke),
};
return i915_subtests(tests, i915);
--
2.25.0.rc0
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