[PATCH v5 25/27] iommu/mediatek: Adjust the structure

Yong Wu
2020-12-09T08:06:25Z

Add "struct mtk_iommu_data *" in the "struct mtk_iommu_domain",
reduce the call mtk_iommu_get_m4u_data().
No functional change.

Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
drivers/iommu/mtk_iommu.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 160690d56bd2..92c1e2f0af89 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -126,6 +126,7 @@ struct mtk_iommu_domain {
struct io_pgtable_cfg cfg;
struct io_pgtable_ops *iop;

+ struct mtk_iommu_data *data;
struct iommu_domain domain;
};

@@ -353,7 +354,7 @@ static void mtk_iommu_config(struct mtk_iommu_data *data,

static int mtk_iommu_domain_finalise(struct mtk_iommu_domain *dom)
{
- struct mtk_iommu_data *data = mtk_iommu_get_m4u_data();
+ struct mtk_iommu_data *data = dom->data;

/* Use the exist domain as there is only one m4u pgtable here. */
if (data->m4u_dom) {
@@ -402,6 +403,7 @@ static struct iommu_domain *mtk_iommu_domain_alloc(unsigned type)
if (iommu_get_dma_cookie(&dom->domain))
goto free_dom;

+ dom->data = data;
if (mtk_iommu_domain_finalise(dom))
goto put_dma_cookie;

@@ -482,10 +484,9 @@ static int mtk_iommu_map(struct iommu_domain *domain, unsigned long iova,
phys_addr_t paddr, size_t size, int prot, gfp_t gfp)
{
struct mtk_iommu_domain *dom = to_mtk_domain(domain);
- struct mtk_iommu_data *data = mtk_iommu_get_m4u_data();

/* The "4GB mode" M4U physically can not use the lower remap of Dram. */
- if (data->enable_4GB)
+ if (dom->data->enable_4GB)
paddr |= BIT_ULL(32);

/* Synchronize with the tlb_lock */
@@ -503,31 +504,32 @@ static size_t mtk_iommu_unmap(struct iommu_domain *domain,

static void mtk_iommu_flush_iotlb_all(struct iommu_domain *domain)
{
- mtk_iommu_tlb_flush_all(mtk_iommu_get_m4u_data());
+ struct mtk_iommu_domain *dom = to_mtk_domain(domain);
+
+ mtk_iommu_tlb_flush_all(dom->data);
}

static void mtk_iommu_iotlb_sync(struct iommu_domain *domain,
struct iommu_iotlb_gather *gather)
{
- struct mtk_iommu_data *data = mtk_iommu_get_m4u_data();
+ struct mtk_iommu_domain *dom = to_mtk_domain(domain);
size_t length = gather->end - gather->start;

if (gather->start == ULONG_MAX)
return;

mtk_iommu_tlb_flush_range_sync(gather->start, length, gather->pgsize,
- data);
+ dom->data);
}

static phys_addr_t mtk_iommu_iova_to_phys(struct iommu_domain *domain,
dma_addr_t iova)
{
struct mtk_iommu_domain *dom = to_mtk_domain(domain);
- struct mtk_iommu_data *data = mtk_iommu_get_m4u_data();
phys_addr_t pa;

pa = dom->iop->iova_to_phys(dom->iop, iova);
- if (data->enable_4GB && pa >= MTK_IOMMU_4GB_MODE_REMAP_BASE)
+ if (dom->data->enable_4GB && pa >= MTK_IOMMU_4GB_MODE_REMAP_BASE)
pa &= ~BIT_ULL(32);

return pa;
--
2.18.0