[CI,2/2] drm/i915/selftests: Add selftest for memory region PF handling
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Message ID 20191231233657.523408-2-chris@chris-wilson.co.uk
State New
Headers show
Series
  • [CI,1/2] drm/i915/gem: Extend mmap support for lmem
Related show

Commit Message

Chris Wilson Dec. 31, 2019, 11:36 p.m. UTC
From: Abdiel Janulgue <abdiel.janulgue@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@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reported-by: kbuild test robot <lkp@intel.com>
---
 .../drm/i915/gem/selftests/i915_gem_mman.c    | 246 ++++++++++++------
 1 file changed, 171 insertions(+), 75 deletions(-)

Patch
diff mbox series

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..a7ef35117aa2 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"
@@ -725,44 +726,121 @@  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;
+	}
 
-	vaddr = i915_gem_object_pin_map(obj, I915_MAP_WB);
-	if (IS_ERR(vaddr)) {
-		err = PTR_ERR(vaddr);
+	memset_io(map, POISON_INUSE, PAGE_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);
+
+	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;
 	}
+
+	if (memchr_inv((void __force *)map, POISON_FREE, PAGE_SIZE)) {
+		pr_err("Write via mmap did not land in backing store\n");
+		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, PAGE_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, PAGE_SIZE)) {
+		pr_err("Write via mmap did not land in backing store\n");
+		err = -EINVAL;
 	}
+	i915_gem_object_unpin_map(obj);
+
+	return err;
+}
+
+#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 (!i915_ggtt_has_aperture(&i915->ggtt) &&
+	    type == I915_MMAP_TYPE_GTT)
+		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);
 
@@ -787,14 +865,14 @@  static int igt_mmap(void *arg, enum i915_mmap_type type)
 			pr_err("Unable to read from mmap, offset:%zd\n",
 			       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",
 			       i * sizeof(x), x, expand32(POISON_INUSE));
 			err = -EINVAL;
-			break;
+			goto out_unmap;
 		}
 
 		x = expand32(POISON_FREE);
@@ -802,37 +880,46 @@  static int igt_mmap(void *arg, enum i915_mmap_type type)
 			pr_err("Unable to write to mmap, offset:%zd\n",
 			       i * sizeof(x));
 			err = -EFAULT;
-			break;
+			goto out_unmap;
 		}
 	}
 
+	err = wc_check(obj);
+	if (err == -ENXIO)
+		err = gtt_check(obj);
 out_unmap:
 	vm_munmap(addr, PAGE_SIZE);
 
-	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);
-
-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) {
+		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(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 +974,25 @@  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 (!i915_ggtt_has_aperture(&i915->ggtt) &&
+	    type == I915_MMAP_TYPE_GTT)
 		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)
@@ -952,19 +1032,37 @@  static int igt_mmap_revoke(void *arg, enum i915_mmap_type type)
 
 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 +1071,8 @@  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);