From: Ville Syrjälä Date: Thu, 9 May 2019 12:21:54 +0000 (+0300) Subject: drm/i915/selftests: Add live vma selftest X-Git-Tag: v5.3-rc1~81^2~26^2~40 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=bb211c3d0c454a5088dfc94d3b3c3885e4d4935e;p=linux.git drm/i915/selftests: Add live vma selftest Add a live selftest to excercise rotated/remapped vmas. We simply write through the rotated/remapped vma, and confirm that the data appears in the right page when read through the normal vma. Not sure what the fallout of making all rotated/remapped vmas mappable/fenceable would be, hence I just hacked it in the test. v2: Grab rpm reference (Chris) GEM_BUG_ON(view.type not as expected) (Chris) Allow CAN_FENCE for rotated/remapped vmas (Chris) Update intel_plane_uses_fence() to ask for a fence only for normal vmas on gen4+ v3: Deal with intel_wakeref_t v4: Rebase Cc: Chris Wilson Reviewed-by: Chris Wilson Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20190509122159.24376-4-ville.syrjala@linux.intel.com Reviewed-by: Maarten Lankhorst --- diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c index c68b435d4064..343736b2d602 100644 --- a/drivers/gpu/drm/i915/i915_vma.c +++ b/drivers/gpu/drm/i915/i915_vma.c @@ -483,14 +483,6 @@ void __i915_vma_set_map_and_fenceable(struct i915_vma *vma) GEM_BUG_ON(!i915_vma_is_ggtt(vma)); GEM_BUG_ON(!vma->fence_size); - /* - * Explicitly disable for rotated VMA since the display does not - * need the fence and the VMA is not accessible to other users. - */ - if (vma->ggtt_view.type == I915_GGTT_VIEW_ROTATED || - vma->ggtt_view.type == I915_GGTT_VIEW_REMAPPED) - return; - fenceable = (vma->node.size >= vma->fence_size && IS_ALIGNED(vma->node.start, vma->fence_alignment)); diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 95c850d7faab..24b6b808df6e 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2077,7 +2077,9 @@ static bool intel_plane_uses_fence(const struct intel_plane_state *plane_state) struct intel_plane *plane = to_intel_plane(plane_state->base.plane); struct drm_i915_private *dev_priv = to_i915(plane->base.dev); - return INTEL_GEN(dev_priv) < 4 || plane->has_fbc; + return INTEL_GEN(dev_priv) < 4 || + (plane->has_fbc && + plane_state->view.type == I915_GGTT_VIEW_NORMAL); } struct i915_vma * diff --git a/drivers/gpu/drm/i915/selftests/i915_live_selftests.h b/drivers/gpu/drm/i915/selftests/i915_live_selftests.h index 6d766925ad04..a54f590788a4 100644 --- a/drivers/gpu/drm/i915/selftests/i915_live_selftests.h +++ b/drivers/gpu/drm/i915/selftests/i915_live_selftests.h @@ -17,6 +17,7 @@ selftest(requests, i915_request_live_selftests) selftest(active, i915_active_live_selftests) selftest(objects, i915_gem_object_live_selftests) selftest(dmabuf, i915_gem_dmabuf_live_selftests) +selftest(vma, i915_vma_live_selftests) selftest(coherency, i915_gem_coherency_live_selftests) selftest(gtt, i915_gem_gtt_live_selftests) selftest(gem, i915_gem_live_selftests) diff --git a/drivers/gpu/drm/i915/selftests/i915_vma.c b/drivers/gpu/drm/i915/selftests/i915_vma.c index 89f6ef945c1b..0027c1fac336 100644 --- a/drivers/gpu/drm/i915/selftests/i915_vma.c +++ b/drivers/gpu/drm/i915/selftests/i915_vma.c @@ -834,3 +834,145 @@ int i915_vma_mock_selftests(void) drm_dev_put(&i915->drm); return err; } + +static int igt_vma_remapped_gtt(void *arg) +{ + struct drm_i915_private *i915 = arg; + const struct intel_remapped_plane_info planes[] = { + { .width = 1, .height = 1, .stride = 1 }, + { .width = 2, .height = 2, .stride = 2 }, + { .width = 4, .height = 4, .stride = 4 }, + { .width = 8, .height = 8, .stride = 8 }, + + { .width = 3, .height = 5, .stride = 3 }, + { .width = 3, .height = 5, .stride = 4 }, + { .width = 3, .height = 5, .stride = 5 }, + + { .width = 5, .height = 3, .stride = 5 }, + { .width = 5, .height = 3, .stride = 7 }, + { .width = 5, .height = 3, .stride = 9 }, + + { .width = 4, .height = 6, .stride = 6 }, + { .width = 6, .height = 4, .stride = 6 }, + { } + }, *p; + enum i915_ggtt_view_type types[] = { + I915_GGTT_VIEW_ROTATED, + I915_GGTT_VIEW_REMAPPED, + 0, + }, *t; + struct drm_i915_gem_object *obj; + intel_wakeref_t wakeref; + int err = 0; + + obj = i915_gem_object_create_internal(i915, 10 * 10 * PAGE_SIZE); + if (IS_ERR(obj)) + return PTR_ERR(obj); + + mutex_lock(&i915->drm.struct_mutex); + + wakeref = intel_runtime_pm_get(i915); + + for (t = types; *t; t++) { + for (p = planes; p->width; p++) { + struct i915_ggtt_view view = { + .type = *t, + .rotated.plane[0] = *p, + }; + struct i915_vma *vma; + u32 __iomem *map; + unsigned int x, y; + int err; + + err = i915_gem_object_set_to_gtt_domain(obj, true); + if (err) + goto out; + + vma = i915_gem_object_ggtt_pin(obj, &view, 0, 0, PIN_MAPPABLE); + if (IS_ERR(vma)) { + err = PTR_ERR(vma); + goto out; + } + + GEM_BUG_ON(vma->ggtt_view.type != *t); + + map = i915_vma_pin_iomap(vma); + i915_vma_unpin(vma); + if (IS_ERR(map)) { + err = PTR_ERR(map); + goto out; + } + + for (y = 0 ; y < p->height; y++) { + for (x = 0 ; x < p->width; x++) { + unsigned int offset; + u32 val = y << 16 | x; + + if (*t == I915_GGTT_VIEW_ROTATED) + offset = (x * p->height + y) * PAGE_SIZE; + else + offset = (y * p->width + x) * PAGE_SIZE; + + iowrite32(val, &map[offset / sizeof(*map)]); + } + } + + i915_vma_unpin_iomap(vma); + + vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, PIN_MAPPABLE); + if (IS_ERR(vma)) { + err = PTR_ERR(vma); + goto out; + } + + GEM_BUG_ON(vma->ggtt_view.type != I915_GGTT_VIEW_NORMAL); + + map = i915_vma_pin_iomap(vma); + i915_vma_unpin(vma); + if (IS_ERR(map)) { + err = PTR_ERR(map); + goto out; + } + + for (y = 0 ; y < p->height; y++) { + for (x = 0 ; x < p->width; x++) { + unsigned int offset, src_idx; + u32 exp = y << 16 | x; + u32 val; + + if (*t == I915_GGTT_VIEW_ROTATED) + src_idx = rotated_index(&view.rotated, 0, x, y); + else + src_idx = remapped_index(&view.remapped, 0, x, y); + offset = src_idx * PAGE_SIZE; + + val = ioread32(&map[offset / sizeof(*map)]); + if (val != exp) { + pr_err("%s VMA write test failed, expected 0x%x, found 0x%x\n", + *t == I915_GGTT_VIEW_ROTATED ? "Rotated" : "Remapped", + val, exp); + i915_vma_unpin_iomap(vma); + goto out; + } + } + } + i915_vma_unpin_iomap(vma); + } + } + +out: + intel_runtime_pm_put(i915, wakeref); + mutex_unlock(&i915->drm.struct_mutex); + i915_gem_object_put(obj); + + return err; +} + +int i915_vma_live_selftests(struct drm_i915_private *i915) +{ + static const struct i915_subtest tests[] = { + SUBTEST(igt_vma_remapped_gtt), + }; + + return i915_subtests(tests, i915); +}