[PATCH 2/5] drm/panfrost: add support specifying pgtbl quirks
From: Neil Armstrong <hidden>
Date: 2020-09-08 20:04:07
Also in:
dri-devel, linux-amlogic, lkml
Subsystem:
arm mali panfrost drm driver, drm drivers, drm drivers and misc gpu patches, the rest · Maintainers:
Boris Brezillon, Rob Herring, Steven Price, Adrián Larumbe, David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Linus Torvalds
Add a pgtbl_quirks entry in the compatible specific table to permit specyfying IOMMU quirks for platforms. Signed-off-by: Neil Armstrong <redacted> --- drivers/gpu/drm/panfrost/panfrost_device.h | 3 +++ drivers/gpu/drm/panfrost/panfrost_mmu.c | 1 + 2 files changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/panfrost/panfrost_device.h b/drivers/gpu/drm/panfrost/panfrost_device.h
index 953f7536a773..2cf1a6a13af8 100644
--- a/drivers/gpu/drm/panfrost/panfrost_device.h
+++ b/drivers/gpu/drm/panfrost/panfrost_device.h@@ -70,6 +70,9 @@ struct panfrost_compatible { int num_pm_domains; /* Only required if num_pm_domains > 1. */ const char * const *pm_domain_names; + + /* IOMMU quirks flags */ + unsigned long pgtbl_quirks; }; struct panfrost_device {
diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panfrost/panfrost_mmu.c
index e8f7b11352d2..55a846c70e46 100644
--- a/drivers/gpu/drm/panfrost/panfrost_mmu.c
+++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c@@ -368,6 +368,7 @@ int panfrost_mmu_pgtable_alloc(struct panfrost_file_priv *priv) mmu->as = -1; mmu->pgtbl_cfg = (struct io_pgtable_cfg) { + .quirks = pfdev->comp ? pfdev->comp->pgtbl_quirks : 0, .pgsize_bitmap = SZ_4K | SZ_2M, .ias = FIELD_GET(0xff, pfdev->features.mmu_features), .oas = FIELD_GET(0xff00, pfdev->features.mmu_features),
--
2.22.0
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