Messages in this thread | | | Subject | Re: [PATCH 2/5] drm/panfrost: add support specifying pgtbl quirks | From | Steven Price <> | Date | Wed, 9 Sep 2020 13:23:37 +0100 |
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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@baylibre.com>
Reviewed-by: Steven Price <steven.price@arm.com>
> --- > 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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