Tegra194: add support for multiple SMMU devices

This patch adds support for all three SMMU devices present on the SoC.

The following changes have been done:
    Add SMMU devices to the memory map
    Update register read and write functions

Change-Id: I0007b496d2ae7264f4fa9f605d4b0a15fa747a0f
Signed-off-by: Pritesh Raithatha <praithatha@nvidia.com>

plat/nvidia/tegra/include/t194/tegra_def.h

@@ -219,7 +219,9 @@
 /*******************************************************************************
  * Tegra SMMU Controller constants
  ******************************************************************************/
-#define TEGRA_SMMU_BASE			0x10000000
+#define TEGRA_SMMU0_BASE		0x12000000
+#define TEGRA_SMMU1_BASE		0x11000000
+#define TEGRA_SMMU2_BASE		0x10000000
 
 /*******************************************************************************
  * Tegra TZRAM constants

plat/nvidia/tegra/soc/t194/drivers/include/smmu_plat_config.h

@@ -414,4 +414,29 @@ static __attribute__((aligned(16))) smmu_regs_t smmu_ctx_regs[] = {
 	_END_OF_TABLE_,
 };
 
+static inline uint32_t tegra_smmu_read_32(uint32_t smmu_id, uint32_t off)
+{
+	if (smmu_id == 0)
+		return mmio_read_32(TEGRA_SMMU0_BASE + off);
+	else if (smmu_id == 1)
+		return mmio_read_32(TEGRA_SMMU1_BASE + off);
+	else if (smmu_id == 2)
+		return mmio_read_32(TEGRA_SMMU2_BASE + off);
+	else
+		panic();
+}
+
+static inline void tegra_smmu_write_32(uint32_t smmu_id,
+			uint32_t off, uint32_t val)
+{
+	if (smmu_id == 0)
+		mmio_write_32(TEGRA_SMMU0_BASE + off, val);
+	else if (smmu_id == 1)
+		mmio_write_32(TEGRA_SMMU1_BASE + off, val);
+	else if (smmu_id == 2)
+		mmio_write_32(TEGRA_SMMU2_BASE + off, val);
+	else
+		panic();
+}
+
 #endif //__SMMU_PLAT_CONFIG_H

plat/nvidia/tegra/soc/t194/plat_setup.c

@@ -81,7 +81,11 @@ static const mmap_region_t tegra_mmap[] = {
 			MT_DEVICE | MT_RW | MT_SECURE),
 	MAP_REGION_FLAT(TEGRA_MMCRAB_BASE, 0x60000, /* 384KB */
 			MT_DEVICE | MT_RW | MT_SECURE),
-	MAP_REGION_FLAT(TEGRA_SMMU_BASE, 0x1000000, /* 64KB */
+	MAP_REGION_FLAT(TEGRA_SMMU0_BASE, 0x1000000, /* 64KB */
+			MT_DEVICE | MT_RW | MT_SECURE),
+	MAP_REGION_FLAT(TEGRA_SMMU1_BASE, 0x1000000, /* 64KB */
+			MT_DEVICE | MT_RW | MT_SECURE),
+	MAP_REGION_FLAT(TEGRA_SMMU2_BASE, 0x1000000, /* 64KB */
 			MT_DEVICE | MT_RW | MT_SECURE),
 	{0}
 };

plat/nvidia/tegra/soc/t194/platform_t194.mk

@@ -23,6 +23,9 @@ $(eval $(call add_define,ENABLE_CHIP_VERIFICATION_HARNESS))
 ENABLE_SMMU_DEVICE			:= 0
 $(eval $(call add_define,ENABLE_SMMU_DEVICE))
 
+NUM_SMMU_DEVICES			:= 3
+$(eval $(call add_define,NUM_SMMU_DEVICES))
+
 RESET_TO_BL31				:= 1
 
 PROGRAMMABLE_RESET_ADDRESS		:= 1