From: Lucas Stach <l.stach@pengutronix.de>
Date: Thu, 7 Sep 2017 13:27:00 +0000 (+0200)
Subject: drm/etnaviv: remove iova_to_phys iommu ops
X-Git-Tag: v4.15-rc1~90^2~35^2~34
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=87ceb3756030d284c1e8424877a34b5452906549;p=linux.git

drm/etnaviv: remove iova_to_phys iommu ops

They are not used in any way, so can go away.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-By: Wladimir J. van der Laan <laanwj@gmail.com>
---

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_iommu.c b/drivers/gpu/drm/etnaviv/etnaviv_iommu.c
index 7a7c97f599d7..f804c0aaa7a2 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_iommu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_iommu.c
@@ -66,18 +66,6 @@ static void pgtable_free(struct etnaviv_iommu_domain_pgtable *pgtable,
 	dma_free_coherent(NULL, size, pgtable->pgtable, pgtable->paddr);
 }
 
-static u32 pgtable_read(struct etnaviv_iommu_domain_pgtable *pgtable,
-			   unsigned long iova)
-{
-	/* calcuate index into page table */
-	unsigned int index = (iova - GPU_MEM_START) / SZ_4K;
-	phys_addr_t paddr;
-
-	paddr = pgtable->pgtable[index];
-
-	return paddr;
-}
-
 static void pgtable_write(struct etnaviv_iommu_domain_pgtable *pgtable,
 			  unsigned long iova, phys_addr_t paddr)
 {
@@ -164,14 +152,6 @@ static size_t etnaviv_iommuv1_unmap(struct iommu_domain *domain,
 	return SZ_4K;
 }
 
-static phys_addr_t etnaviv_iommu_iova_to_phys(struct iommu_domain *domain,
-	dma_addr_t iova)
-{
-	struct etnaviv_iommu_domain *etnaviv_domain = to_etnaviv_domain(domain);
-
-	return pgtable_read(&etnaviv_domain->pgtable, iova);
-}
-
 static size_t etnaviv_iommuv1_dump_size(struct iommu_domain *domain)
 {
 	return PT_SIZE;
@@ -189,7 +169,6 @@ static const struct etnaviv_iommu_ops etnaviv_iommu_ops = {
 		.domain_free = etnaviv_domain_free,
 		.map = etnaviv_iommuv1_map,
 		.unmap = etnaviv_iommuv1_unmap,
-		.iova_to_phys = etnaviv_iommu_iova_to_phys,
 		.pgsize_bitmap = SZ_4K,
 	},
 	.dump_size = etnaviv_iommuv1_dump_size,
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c b/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c
index cbe447ac5974..d794e8c0dd7e 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c
@@ -97,19 +97,6 @@ static size_t etnaviv_iommuv2_unmap(struct iommu_domain *domain,
 	return SZ_4K;
 }
 
-static phys_addr_t etnaviv_iommuv2_iova_to_phys(struct iommu_domain *domain,
-	dma_addr_t iova)
-{
-	struct etnaviv_iommuv2_domain *etnaviv_domain =
-			to_etnaviv_domain(domain);
-	int mtlb_entry, stlb_entry;
-
-	mtlb_entry = (iova & MMUv2_MTLB_MASK) >> MMUv2_MTLB_SHIFT;
-	stlb_entry = (iova & MMUv2_STLB_MASK) >> MMUv2_STLB_SHIFT;
-
-	return etnaviv_domain->stlb_cpu[mtlb_entry][stlb_entry] & ~(SZ_4K - 1);
-}
-
 static int etnaviv_iommuv2_init(struct etnaviv_iommuv2_domain *etnaviv_domain)
 {
 	u32 *p;
@@ -235,7 +222,6 @@ static const struct etnaviv_iommu_ops etnaviv_iommu_ops = {
 		.domain_free = etnaviv_iommuv2_domain_free,
 		.map = etnaviv_iommuv2_map,
 		.unmap = etnaviv_iommuv2_unmap,
-		.iova_to_phys = etnaviv_iommuv2_iova_to_phys,
 		.pgsize_bitmap = SZ_4K,
 	},
 	.dump_size = etnaviv_iommuv2_dump_size,