T124 has some new register bits in {TLB,PTC}_CONFIG:
- TLB_RR_ARB and PTC_REQ_LIMIT
- TLB_ACTIVE_LINES 0x20 instead of 0x10
They are defined as platform data now.
Signed-off-by: Hiroshi Doyu <hdoyu@xxxxxxxxxx>
---
drivers/iommu/tegra-smmu.c | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
index 24fe16f1a1d8..7f13133eab0a 100644
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -71,12 +71,13 @@ enum {
#define SMMU_CACHE_CONFIG_STATS_TEST (1 << SMMU_CACHE_CONFIG_STATS_TEST_SHIFT)
#define SMMU_TLB_CONFIG_HIT_UNDER_MISS__ENABLE (1 << 29)
-#define SMMU_TLB_CONFIG_ACTIVE_LINES__VALUE 0x10
-#define SMMU_TLB_CONFIG_RESET_VAL 0x20000010
+#define SMMU_TLB_CONFIG_RESET_VAL 0x20000000
+#define SMMU_TLB_RR_ARB (1 << 28)
#define SMMU_PTC_CONFIG_CACHE__ENABLE (1 << 29)
#define SMMU_PTC_CONFIG_INDEX_MAP__PATTERN 0x3f
#define SMMU_PTC_CONFIG_RESET_VAL 0x2000003f
+#define SMMU_PTC_REQ_LIMIT (8 << 24)
#define SMMU_PTB_ASID 0x1c
#define SMMU_PTB_ASID_CURRENT_SHIFT 0
@@ -239,6 +240,8 @@ struct smmu_device {
struct page *avp_vector_page; /* dummy page shared by all AS's */
int nr_xlats; /* number of translation_enable registers */
+ u32 tlb_reset; /* TLB config reset value */
+ u32 ptc_reset; /* PTC config reset value */
/*
* Register image savers for suspend/resume
@@ -261,6 +264,8 @@ struct smmu_platform_data {
int asids; /* number of asids */
int nr_xlats; /* number of translation_enable registers */
bool lpae; /* PA > 32 bit */
+ u32 tlb_reset; /* TLB config reset value */
+ u32 ptc_reset; /* PTC config reset value */
};
static struct smmu_device *smmu_handle; /* unique for a system */
@@ -519,8 +524,8 @@ static int smmu_setup_regs(struct smmu_device *smmu)
SMMU_TRANSLATION_ENABLE_0 + i * sizeof(u32));
smmu_write(smmu, smmu->asid_security, SMMU_ASID_SECURITY);
- smmu_write(smmu, SMMU_TLB_CONFIG_RESET_VAL, SMMU_CACHE_CONFIG(_TLB));
- smmu_write(smmu, SMMU_PTC_CONFIG_RESET_VAL, SMMU_CACHE_CONFIG(_PTC));
+ smmu_write(smmu, smmu->ptc_reset, SMMU_CACHE_CONFIG(_PTC));
+ smmu_write(smmu, smmu->tlb_reset, SMMU_CACHE_CONFIG(_TLB));
smmu_flush_regs(smmu, 1);
@@ -1323,6 +1328,10 @@ static int tegra_smmu_probe(struct platform_device *pdev)
smmu->map = (struct dma_iommu_mapping **)(smmu->as + asids);
smmu->xlat = (u32 *)(smmu->map + smmu->num_as);
smmu->nregs = pdev->num_resources;
+ smmu->tlb_reset = (pdata && pdata->tlb_reset) ? pdata->tlb_reset :
+ (SMMU_TLB_CONFIG_RESET_VAL | 0x10);
+ smmu->ptc_reset = (pdata && pdata->ptc_reset) ? pdata->ptc_reset :
+ (SMMU_PTC_CONFIG_RESET_VAL | SMMU_PTC_REQ_LIMIT);
smmu->regs = devm_kzalloc(dev, 2 * smmu->nregs * sizeof(*smmu->regs),
GFP_KERNEL);
smmu->rege = smmu->regs + smmu->nregs;
--
2.0.0.rc1.15.g7e76a2f
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