linux-kernel - [PATCH 1/3] iommu/io-pgtable: Rename last-level cache quirk to IO_PGTABLE_QUIRK_PTW

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Date:   Mon, 11 Jan 2021 19:45:03 +0530
From:   Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
To:     Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>,
        Jordan Crouse <jcrouse@...eaurora.org>,
        Rob Clark <robdclark@...il.com>,
        Akhil P Oommen <akhilpo@...eaurora.org>,
        isaacm@...eaurora.org
Cc:     iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        freedreno <freedreno@...ts.freedesktop.org>,
        Kristian H Kristensen <hoegsberg@...gle.com>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
Subject: [PATCH 1/3] iommu/io-pgtable: Rename last-level cache quirk to IO_PGTABLE_QUIRK_PTW_LLC

Rename last-level cache quirk IO_PGTABLE_QUIRK_ARM_OUTER_WBWA to
IO_PGTABLE_QUIRK_PTW_LLC which is used to set the required TCR
attributes for non-coherent page table walker to be more generic
and in sync with the upcoming page protection flag IOMMU_LLC.

Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
---
 drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +-
 drivers/iommu/io-pgtable-arm.c          | 6 +++---
 include/linux/io-pgtable.h              | 6 +++---
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 0f184c3dd9d9..82b5e4969195 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -190,7 +190,7 @@ void adreno_set_llc_attributes(struct iommu_domain *iommu)
 {
 	struct io_pgtable_domain_attr pgtbl_cfg;
 
-	pgtbl_cfg.quirks = IO_PGTABLE_QUIRK_ARM_OUTER_WBWA;
+	pgtbl_cfg.quirks = IO_PGTABLE_QUIRK_PTW_LLC;
 	iommu_domain_set_attr(iommu, DOMAIN_ATTR_IO_PGTABLE_CFG, &pgtbl_cfg);
 }
 
diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c
index 7c9ea9d7874a..7439ee7fdcdb 100644
--- a/drivers/iommu/io-pgtable-arm.c
+++ b/drivers/iommu/io-pgtable-arm.c
@@ -762,7 +762,7 @@ arm_64_lpae_alloc_pgtable_s1(struct io_pgtable_cfg *cfg, void *cookie)
 	if (cfg->quirks & ~(IO_PGTABLE_QUIRK_ARM_NS |
 			    IO_PGTABLE_QUIRK_NON_STRICT |
 			    IO_PGTABLE_QUIRK_ARM_TTBR1 |
-			    IO_PGTABLE_QUIRK_ARM_OUTER_WBWA))
+			    IO_PGTABLE_QUIRK_PTW_LLC))
 		return NULL;
 
 	data = arm_lpae_alloc_pgtable(cfg);
@@ -774,12 +774,12 @@ arm_64_lpae_alloc_pgtable_s1(struct io_pgtable_cfg *cfg, void *cookie)
 		tcr->sh = ARM_LPAE_TCR_SH_IS;
 		tcr->irgn = ARM_LPAE_TCR_RGN_WBWA;
 		tcr->orgn = ARM_LPAE_TCR_RGN_WBWA;
-		if (cfg->quirks & IO_PGTABLE_QUIRK_ARM_OUTER_WBWA)
+		if (cfg->quirks & IO_PGTABLE_QUIRK_PTW_LLC)
 			goto out_free_data;
 	} else {
 		tcr->sh = ARM_LPAE_TCR_SH_OS;
 		tcr->irgn = ARM_LPAE_TCR_RGN_NC;
-		if (!(cfg->quirks & IO_PGTABLE_QUIRK_ARM_OUTER_WBWA))
+		if (!(cfg->quirks & IO_PGTABLE_QUIRK_PTW_LLC))
 			tcr->orgn = ARM_LPAE_TCR_RGN_NC;
 		else
 			tcr->orgn = ARM_LPAE_TCR_RGN_WBWA;
diff --git a/include/linux/io-pgtable.h b/include/linux/io-pgtable.h
index fb4d5a763e0c..6f996a817441 100644
--- a/include/linux/io-pgtable.h
+++ b/include/linux/io-pgtable.h
@@ -87,8 +87,8 @@ struct io_pgtable_cfg {
 	 * IO_PGTABLE_QUIRK_ARM_TTBR1: (ARM LPAE format) Configure the table
 	 *	for use in the upper half of a split address space.
 	 *
-	 * IO_PGTABLE_QUIRK_ARM_OUTER_WBWA: Override the outer-cacheability
-	 *	attributes set in the TCR for a non-coherent page-table walker.
+	 * IO_PGTABLE_QUIRK_PTW_LLC: Override the outer-cacheability attributes
+	 *	set in the TCR for a non-coherent page-table walker.
 	 */
 	#define IO_PGTABLE_QUIRK_ARM_NS		BIT(0)
 	#define IO_PGTABLE_QUIRK_NO_PERMS	BIT(1)
@@ -96,7 +96,7 @@ struct io_pgtable_cfg {
 	#define IO_PGTABLE_QUIRK_ARM_MTK_EXT	BIT(3)
 	#define IO_PGTABLE_QUIRK_NON_STRICT	BIT(4)
 	#define IO_PGTABLE_QUIRK_ARM_TTBR1	BIT(5)
-	#define IO_PGTABLE_QUIRK_ARM_OUTER_WBWA	BIT(6)
+	#define IO_PGTABLE_QUIRK_PTW_LLC	BIT(6)
 	unsigned long			quirks;
 	unsigned long			pgsize_bitmap;
 	unsigned int			ias;
-- 
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