[PATCH v1 2/8] firmware: arm_rmm: Add VSMMU commands and fields

[Nicolin Chen <nicolinc@nvidia.com>]

DEN0137 2.0-bet3 adds the RSI_VSMMU_GET_INFO command and replaces the old
RSI_VSMMU_ACTIVATE command with RSI_ARCH_DEV_ACTIVATE.

Add the command IDs, return codes, SMMUv3 device type, and helpers for both
commands.

Assisted-by: Codex:gpt-5.6-sol
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
---
 include/linux/arm-rsi-cmds.h  | 22 ++++++++++++++++++++++
 include/linux/arm-smccc-rsi.h | 20 ++++++++++++++++++++
 2 files changed, 42 insertions(+)

diff --git a/include/linux/arm-rsi-cmds.h b/include/linux/arm-rsi-cmds.h
index 13478e14c4296..548ab0bcac722 100644
--- a/include/linux/arm-rsi-cmds.h
+++ b/include/linux/arm-rsi-cmds.h
@@ -237,4 +237,26 @@ static inline unsigned long rsi_attestation_token_continue(phys_addr_t granule,
 	return res.a0;
 }
 
+static inline unsigned long rsi_vsmmu_get_info(phys_addr_t addr,
+					       phys_addr_t *top)
+{
+	struct arm_smccc_res res;
+
+	arm_smccc_1_1_invoke(SMC_RSI_VSMMU_GET_INFO, addr, &res);
+	if (res.a0 == RSI_SUCCESS && top)
+		*top = res.a1;
+
+	return res.a0;
+}
+
+static inline unsigned long rsi_arch_dev_activate(phys_addr_t base,
+						  unsigned long dev_type)
+{
+	struct arm_smccc_res res;
+
+	arm_smccc_1_1_invoke(SMC_RSI_ARCH_DEV_ACTIVATE, base, dev_type, &res);
+
+	return res.a0;
+}
+
 #endif /* __LINUX_ARM_RSI_CMDS_H_ */
diff --git a/include/linux/arm-smccc-rsi.h b/include/linux/arm-smccc-rsi.h
index fddb77986f706..2c16c23611891 100644
--- a/include/linux/arm-smccc-rsi.h
+++ b/include/linux/arm-smccc-rsi.h
@@ -37,6 +37,7 @@
 #define RSI_ERROR_STATE		UL(2)
 #define RSI_INCOMPLETE		UL(3)
 #define RSI_ERROR_UNKNOWN	UL(4)
+#define RSI_ERROR_DEVICE	UL(5)
 
 #define SMC_RSI_FID(n)		ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL,      \
 						   ARM_SMCCC_SMC_64,         \
@@ -190,4 +191,23 @@ struct realm_config {
  */
 #define SMC_RSI_HOST_CALL			SMC_RSI_FID(0x199)
 
+/*
+ * Get information about a VSMMU.
+ *
+ * arg1 == Base IPA of the VSMMU
+ * ret0 == Status / error
+ * ret1 == Top IPA of the VSMMU
+ */
+#define SMC_RSI_VSMMU_GET_INFO			SMC_RSI_FID(0x19A)
+
+#define RSI_ARCH_DEV_SMMUV3			UL(0)
+
+/*
+ * Activate an architectural device.
+ *
+ * arg1 == Base IPA of the architectural device
+ * arg2 == Architectural device type
+ * ret0 == Status / error
+ */
+#define SMC_RSI_ARCH_DEV_ACTIVATE		SMC_RSI_FID(0x19B)
 #endif /* __LINUX_ARM_SMCCC_RSI_H_ */
-- 
2.43.0