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| author | Lucas Stach <l.stach@pengutronix.de> | 2021-08-20 23:18:29 +0300 |
|---|---|---|
| committer | Lucas Stach <l.stach@pengutronix.de> | 2021-09-16 11:35:33 +0300 |
| commit | d6408538f091fb22d47f792d4efa58143d56c3fb (patch) | |
| tree | abffec513a82642983992fb8eaec6291932b7e3a /drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c | |
| parent | f978a5302f5566480c58ffae64a16d34456801bd (diff) | |
| download | linux-d6408538f091fb22d47f792d4efa58143d56c3fb.tar.xz | |
drm/etnaviv: reference MMU context when setting up hardware state
Move the refcount manipulation of the MMU context to the point where the
hardware state is programmed. At that point it is also known if a previous
MMU state is still there, or the state needs to be reprogrammed with a
potentially different context.
Cc: stable@vger.kernel.org # 5.4
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Michael Walle <michael@walle.cc>
Tested-by: Marek Vasut <marex@denx.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c')
| -rw-r--r-- | drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c b/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c index f8bf488e9d71..d664ae29ae20 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c @@ -172,6 +172,10 @@ static void etnaviv_iommuv2_restore_nonsec(struct etnaviv_gpu *gpu, if (gpu_read(gpu, VIVS_MMUv2_CONTROL) & VIVS_MMUv2_CONTROL_ENABLE) return; + if (gpu->mmu_context) + etnaviv_iommu_context_put(gpu->mmu_context); + gpu->mmu_context = etnaviv_iommu_context_get(context); + prefetch = etnaviv_buffer_config_mmuv2(gpu, (u32)v2_context->mtlb_dma, (u32)context->global->bad_page_dma); @@ -192,6 +196,10 @@ static void etnaviv_iommuv2_restore_sec(struct etnaviv_gpu *gpu, if (gpu_read(gpu, VIVS_MMUv2_SEC_CONTROL) & VIVS_MMUv2_SEC_CONTROL_ENABLE) return; + if (gpu->mmu_context) + etnaviv_iommu_context_put(gpu->mmu_context); + gpu->mmu_context = etnaviv_iommu_context_get(context); + gpu_write(gpu, VIVS_MMUv2_PTA_ADDRESS_LOW, lower_32_bits(context->global->v2.pta_dma)); gpu_write(gpu, VIVS_MMUv2_PTA_ADDRESS_HIGH, |