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

From: Sai Prakash Ranjan
Date: Mon Jan 11 2021 - 09:16:28 EST


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@xxxxxxxxxxxxxx>
---
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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