Merge tag 'irqchip-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core

Pull irqchip changes from Marc Zyngier:

 - Large RISC-V IPI rework to make way for a new interrupt
   architecture

 - More Loongarch fixes from Lianmin Lv, fixing issues in the so
   called "dual-bridge" systems.

 - Workaround for the nvidia T241 chip that gets confused in
   3 and 4 socket configurations, leading to the GIC
   malfunctionning in some contexts

 - Drop support for non-firmware driven GIC configurarations
   now that the old ARM11MP Cavium board is gone

 - Workaround for the Rockchip 3588 chip that doesn't
   correctly deal with the shareability attributes.

 - Replace uses of of_find_property() with the more appropriate
   of_property_read_bool()

 - Make bcm-6345-l1 request its MMIO region

 - Add suspend support to the SiFive PLIC

 - Drop support for stih415, stih416 and stid127 platforms

Link: https://lore.kernel.org/lkml/20230421132104.3021536-1-maz@kernel.org

2 files changed, 31 insertions, 23 deletions

diff --git a/drivers/firmware/smccc/smccc.c b/drivers/firmware/smccc/smccc.c
index 60ccf3e90d7d..db818f9dcb8e 100644
--- a/drivers/firmware/smccc/smccc.c
+++ b/drivers/firmware/smccc/smccc.c
@@ -17,9 +17,13 @@ static enum arm_smccc_conduit smccc_conduit = SMCCC_CONDUIT_NONE;
 
 bool __ro_after_init smccc_trng_available = false;
 u64 __ro_after_init smccc_has_sve_hint = false;
+s32 __ro_after_init smccc_soc_id_version = SMCCC_RET_NOT_SUPPORTED;
+s32 __ro_after_init smccc_soc_id_revision = SMCCC_RET_NOT_SUPPORTED;
 
 void __init arm_smccc_version_init(u32 version, enum arm_smccc_conduit conduit)
 {
+	struct arm_smccc_res res;
+
 	smccc_version = version;
 	smccc_conduit = conduit;
 
@@ -27,6 +31,18 @@ void __init arm_smccc_version_init(u32 version, enum arm_smccc_conduit conduit)
 	if (IS_ENABLED(CONFIG_ARM64_SVE) &&
 	    smccc_version >= ARM_SMCCC_VERSION_1_3)
 		smccc_has_sve_hint = true;
+
+	if ((smccc_version >= ARM_SMCCC_VERSION_1_2) &&
+	    (smccc_conduit != SMCCC_CONDUIT_NONE)) {
+		arm_smccc_1_1_invoke(ARM_SMCCC_ARCH_FEATURES_FUNC_ID,
+				     ARM_SMCCC_ARCH_SOC_ID, &res);
+		if ((s32)res.a0 >= 0) {
+			arm_smccc_1_1_invoke(ARM_SMCCC_ARCH_SOC_ID, 0, &res);
+			smccc_soc_id_version = (s32)res.a0;
+			arm_smccc_1_1_invoke(ARM_SMCCC_ARCH_SOC_ID, 1, &res);
+			smccc_soc_id_revision = (s32)res.a0;
+		}
+	}
 }
 
 enum arm_smccc_conduit arm_smccc_1_1_get_conduit(void)
@@ -44,6 +60,16 @@ u32 arm_smccc_get_version(void)
 }
 EXPORT_SYMBOL_GPL(arm_smccc_get_version);
 
+s32 arm_smccc_get_soc_id_version(void)
+{
+	return smccc_soc_id_version;
+}
+
+s32 arm_smccc_get_soc_id_revision(void)
+{
+	return smccc_soc_id_revision;
+}
+
 static int __init smccc_devices_init(void)
 {
 	struct platform_device *pdev;
diff --git a/drivers/firmware/smccc/soc_id.c b/drivers/firmware/smccc/soc_id.c
index dd7c3d5e8b0b..890eb454599a 100644
--- a/drivers/firmware/smccc/soc_id.c
+++ b/drivers/firmware/smccc/soc_id.c
@@ -42,41 +42,23 @@ static int __init smccc_soc_init(void)
 	if (arm_smccc_get_version() < ARM_SMCCC_VERSION_1_2)
 		return 0;
 
-	if (arm_smccc_1_1_get_conduit() == SMCCC_CONDUIT_NONE) {
-		pr_err("%s: invalid SMCCC conduit\n", __func__);
-		return -EOPNOTSUPP;
-	}
-
-	arm_smccc_1_1_invoke(ARM_SMCCC_ARCH_FEATURES_FUNC_ID,
-			     ARM_SMCCC_ARCH_SOC_ID, &res);
-
-	if ((int)res.a0 == SMCCC_RET_NOT_SUPPORTED) {
+	soc_id_version = arm_smccc_get_soc_id_version();
+	if (soc_id_version == SMCCC_RET_NOT_SUPPORTED) {
 		pr_info("ARCH_SOC_ID not implemented, skipping ....\n");
 		return 0;
 	}
 
-	if ((int)res.a0 < 0) {
-		pr_info("ARCH_FEATURES(ARCH_SOC_ID) returned error: %lx\n",
-			res.a0);
-		return -EINVAL;
-	}
-
-	arm_smccc_1_1_invoke(ARM_SMCCC_ARCH_SOC_ID, 0, &res);
-	if ((int)res.a0 < 0) {
+	if (soc_id_version < 0) {
 		pr_err("ARCH_SOC_ID(0) returned error: %lx\n", res.a0);
 		return -EINVAL;
 	}
 
-	soc_id_version = res.a0;
-
-	arm_smccc_1_1_invoke(ARM_SMCCC_ARCH_SOC_ID, 1, &res);
-	if ((int)res.a0 < 0) {
+	soc_id_rev = arm_smccc_get_soc_id_revision();
+	if (soc_id_rev < 0) {
 		pr_err("ARCH_SOC_ID(1) returned error: %lx\n", res.a0);
 		return -EINVAL;
 	}
 
-	soc_id_rev = res.a0;
-
 	soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
 	if (!soc_dev_attr)
 		return -ENOMEM;