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authorJonas Karlman <jonas@kwiboo.se>2023-06-17 21:25:47 +0300
committerJoerg Roedel <jroedel@suse.de>2023-07-14 17:18:04 +0300
commit2a7e6400f72b9963cbaaac8a60ccc54d2b8c0541 (patch)
treee4690396b4e0bd9ed738e34f145d189fb4560d65 /drivers/iommu/rockchip-iommu.c
parent6df63b7ebdaf5fcd75dceedf6967d0761e56eca1 (diff)
downloadlinux-2a7e6400f72b9963cbaaac8a60ccc54d2b8c0541.tar.xz
iommu: rockchip: Allocate tables from all available memory for IOMMU v2
IOMMU v2 found in newer Rockchip SoCs, e.g. RK356x and RK3588, support placing directory and page tables in up to 40-bit addressable physical memory. Remove the use of GFP_DMA32 flag for IOMMU v2 now that the physical address to the directory table is correctly written to DTE_ADDR. Signed-off-by: Jonas Karlman <jonas@kwiboo.se> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Link: https://lore.kernel.org/r/20230617182540.3091374-3-jonas@kwiboo.se Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/rockchip-iommu.c')
-rw-r--r--drivers/iommu/rockchip-iommu.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c
index ae42959bc490..8ff69fbf9f65 100644
--- a/drivers/iommu/rockchip-iommu.c
+++ b/drivers/iommu/rockchip-iommu.c
@@ -99,6 +99,7 @@ struct rk_iommu_ops {
u32 (*mk_dtentries)(dma_addr_t pt_dma);
u32 (*mk_ptentries)(phys_addr_t page, int prot);
u64 dma_bit_mask;
+ gfp_t gfp_flags;
};
struct rk_iommu {
@@ -727,7 +728,7 @@ static u32 *rk_dte_get_page_table(struct rk_iommu_domain *rk_domain,
if (rk_dte_is_pt_valid(dte))
goto done;
- page_table = (u32 *)get_zeroed_page(GFP_ATOMIC | GFP_DMA32);
+ page_table = (u32 *)get_zeroed_page(GFP_ATOMIC | rk_ops->gfp_flags);
if (!page_table)
return ERR_PTR(-ENOMEM);
@@ -1076,7 +1077,7 @@ static struct iommu_domain *rk_iommu_domain_alloc(unsigned type)
* Each level1 (dt) and level2 (pt) table has 1024 4-byte entries.
* Allocate one 4 KiB page for each table.
*/
- rk_domain->dt = (u32 *)get_zeroed_page(GFP_KERNEL | GFP_DMA32);
+ rk_domain->dt = (u32 *)get_zeroed_page(GFP_KERNEL | rk_ops->gfp_flags);
if (!rk_domain->dt)
goto err_free_domain;
@@ -1377,6 +1378,7 @@ static struct rk_iommu_ops iommu_data_ops_v1 = {
.mk_dtentries = &rk_mk_dte,
.mk_ptentries = &rk_mk_pte,
.dma_bit_mask = DMA_BIT_MASK(32),
+ .gfp_flags = GFP_DMA32,
};
static struct rk_iommu_ops iommu_data_ops_v2 = {
@@ -1384,6 +1386,7 @@ static struct rk_iommu_ops iommu_data_ops_v2 = {
.mk_dtentries = &rk_mk_dte_v2,
.mk_ptentries = &rk_mk_pte_v2,
.dma_bit_mask = DMA_BIT_MASK(40),
+ .gfp_flags = 0,
};
static const struct of_device_id rk_iommu_dt_ids[] = {