Provide a conversion table from swgroup ID to MC_SMMU_<swgroup
name>_ASID_0 register offset to support non-linear conversion. This
conversion used to be exactly linear but after T124 we need a
conversion table to support non-linear cases. We would also need
another table to convert swgroup ID to HOTRESET bit.
Signed-off-by: Hiroshi Doyu <hdoyu@xxxxxxxxxx>
---
drivers/iommu/tegra-smmu.c | 21 ++++++++++++++++++---
1 file changed, 18 insertions(+), 3 deletions(-)
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
index f63d54a..a723a1b 100644
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -184,8 +184,6 @@ enum {
#define __smmu_client_enable_swgroups(c, m) __smmu_client_set_swgroups(c, m, 1)
#define __smmu_client_disable_swgroups(c) __smmu_client_set_swgroups(c, 0, 0)
-#define SWGROUPS_ASID_REG(x) ((x) * sizeof(u32) + SMMU_ASID_BASE)
-
/*
* Per client for address space
*/
@@ -314,6 +312,23 @@ static inline void smmu_write(struct smmu_device *smmu, u32 val, size_t offs)
*/
#define FLUSH_SMMU_REGS(smmu) smmu_read(smmu, SMMU_CONFIG)
+static size_t smmu_get_asid_offset(int id)
+{
+ switch (id) {
+ case TEGRA_SWGROUP_DC14:
+ return 0x490;
+ case TEGRA_SWGROUP_DC12:
+ return 0xa88;
+ case TEGRA_SWGROUP_AFI...TEGRA_SWGROUP_ISP:
+ case TEGRA_SWGROUP_MPE...TEGRA_SWGROUP_PPCS1:
+ return (id - TEGRA_SWGROUP_AFI) * sizeof(u32) + SMMU_ASID_BASE;
+ case TEGRA_SWGROUP_SDMMC1A...63:
+ return (id - TEGRA_SWGROUP_SDMMC1A) * sizeof(u32) + 0xa94;
+ };
+
+ BUG();
+}
+
static struct smmu_client *find_smmu_client(struct smmu_device *smmu,
struct device_node *dev_node)
{
@@ -416,7 +431,7 @@ static int __smmu_client_set_swgroups(struct smmu_client *c,
map = c->swgroups;
for_each_set_bit(i, map, TEGRA_SWGROUP_MAX) {
- offs = SWGROUPS_ASID_REG(i);
+ offs = smmu_get_asid_offset(i);
val = smmu_read(smmu, offs);
if (on) {
if (val) {
--
1.8.1.5
--
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