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* [PATCH 0/3] iommu/drm/msm: Allow non-coherent masters to use system cache
@ 2021-01-11 14:15 Sai Prakash Ranjan
  2021-01-11 14:15 ` [PATCH 1/3] iommu/io-pgtable: Rename last-level cache quirk to IO_PGTABLE_QUIRK_PTW_LLC Sai Prakash Ranjan
                   ` (4 more replies)
  0 siblings, 5 replies; 36+ messages in thread
From: Sai Prakash Ranjan @ 2021-01-11 14:15 UTC (permalink / raw)
  To: Will Deacon, Robin Murphy, Joerg Roedel, Jordan Crouse,
	Rob Clark, Akhil P Oommen, isaacm
  Cc: iommu, linux-arm-kernel, linux-kernel, linux-arm-msm, freedreno,
	Kristian H Kristensen, Sean Paul, David Airlie, Daniel Vetter,
	dri-devel, Sai Prakash Ranjan

commit ecd7274fb4cd ("iommu: Remove unused IOMMU_SYS_CACHE_ONLY flag")
removed unused IOMMU_SYS_CACHE_ONLY prot flag and along with it went
the memory type setting required for the non-coherent masters to use
system cache. Now that system cache support for GPU is added, we will
need to set the right PTE attribute for GPU buffers to be sys cached.
Without this, the system cache lines are not allocated for GPU.

So the patches in this series introduces a new prot flag IOMMU_LLC,
renames IO_PGTABLE_QUIRK_ARM_OUTER_WBWA to IO_PGTABLE_QUIRK_PTW_LLC
and makes GPU the user of this protection flag.

The series slightly depends on following 2 patches posted earlier and
is based on msm-next branch:
 * https://lore.kernel.org/patchwork/patch/1363008/
 * https://lore.kernel.org/patchwork/patch/1363010/

Sai Prakash Ranjan (3):
  iommu/io-pgtable: Rename last-level cache quirk to
    IO_PGTABLE_QUIRK_PTW_LLC
  iommu/io-pgtable-arm: Add IOMMU_LLC page protection flag
  drm/msm: Use IOMMU_LLC page protection flag to map gpu buffers

 drivers/gpu/drm/msm/adreno/a6xx_gpu.c   | 3 +++
 drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +-
 drivers/gpu/drm/msm/msm_iommu.c         | 3 +++
 drivers/gpu/drm/msm/msm_mmu.h           | 4 ++++
 drivers/iommu/io-pgtable-arm.c          | 9 ++++++---
 include/linux/io-pgtable.h              | 6 +++---
 include/linux/iommu.h                   | 6 ++++++
 7 files changed, 26 insertions(+), 7 deletions(-)


base-commit: 00fd44a1a4700718d5d962432b55c09820f7e709
-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation


^ permalink raw reply	[flat|nested] 36+ messages in thread

end of thread, other threads:[~2021-08-10  9:55 UTC | newest]

Thread overview: 36+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-01-11 14:15 [PATCH 0/3] iommu/drm/msm: Allow non-coherent masters to use system cache Sai Prakash Ranjan
2021-01-11 14:15 ` [PATCH 1/3] iommu/io-pgtable: Rename last-level cache quirk to IO_PGTABLE_QUIRK_PTW_LLC Sai Prakash Ranjan
2021-01-11 14:15 ` [PATCH 2/3] iommu/io-pgtable-arm: Add IOMMU_LLC page protection flag Sai Prakash Ranjan
     [not found]   ` <20210129090516.GB3998@willie-the-truck>
     [not found]     ` <5d23fce629323bcda71594010824aad0@codeaurora.org>
2021-02-01 11:15       ` Will Deacon
2021-02-01 16:20         ` Rob Clark
2021-02-01 18:20           ` Jordan Crouse
2021-02-02  6:26             ` Sai Prakash Ranjan
2021-02-03 21:46               ` Will Deacon
2021-02-03 22:14                 ` Rob Clark
2021-03-16 17:04                   ` Rob Clark
2021-03-16 17:16                     ` Rob Clark
2021-02-05 12:08                 ` Sai Prakash Ranjan
2021-03-09  6:40                   ` Sai Prakash Ranjan
2021-03-25 17:33                     ` Will Deacon
2021-06-30 10:07                       ` Sai Prakash Ranjan
2021-02-02  6:28             ` Sai Prakash Ranjan
2021-01-11 14:15 ` [PATCH 3/3] drm/msm: Use IOMMU_LLC page protection flag to map gpu buffers Sai Prakash Ranjan
2021-01-20  5:18 ` [PATCH 0/3] iommu/drm/msm: Allow non-coherent masters to use system cache Sai Prakash Ranjan
2021-07-28 14:00 ` Georgi Djakov
2021-07-29  4:38   ` Sai Prakash Ranjan
2021-08-02 10:55     ` Will Deacon
2021-08-02 15:08       ` [Freedreno] " Rob Clark
2021-08-02 15:14         ` Will Deacon
2021-08-03  1:36           ` Rob Clark
2021-08-09 14:56             ` Will Deacon
2021-08-09 16:57               ` Rob Clark
2021-08-09 17:05                 ` Will Deacon
2021-08-09 17:18                   ` Rob Clark
2021-08-09 17:40                     ` Will Deacon
2021-08-09 17:47                       ` Sai Prakash Ranjan
2021-08-09 18:07                         ` Rob Clark
2021-08-09 18:10                           ` Sai Prakash Ranjan
2021-08-09 18:30                             ` Rob Clark
2021-08-09 18:32                               ` Sai Prakash Ranjan
2021-08-10  9:16                         ` Will Deacon
2021-08-10  9:54                           ` Sai Prakash Ranjan

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