On 08/09/2020 16:18, Neil Armstrong wrote:
Add a pgtbl_quirks entry in the compatible specific table to permit specyfying IOMMU
quirks for platforms.
Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
Reviewed-by: Steven Price <steven.price@xxxxxxx>
---
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),
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