Merge: edac: Turin: Address translation using PRM

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/merge_requests/5855

JIRA: https://issues.redhat.com/browse/RHEL-22695

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>

Approved-by: Mark Langsdorf <mlangsdo@redhat.com>
Approved-by: Lenny Szubowicz <lszubowi@redhat.com>
Approved-by: Jiri Dluhos <jdluhos@redhat.com>
Approved-by: David Arcari <darcari@redhat.com>
Approved-by: CKI KWF Bot <cki-ci-bot+kwf-gitlab-com@redhat.com>

Merged-by: Augusto Caringi <acaringi@redhat.com>

Author: caringi

drivers/acpi/Kconfig

@@ -589,7 +589,7 @@ config ACPI_VIOT
 
 config ACPI_PRMT
 	bool "Platform Runtime Mechanism Support"
-	depends on EFI && (X86_64 || ARM64)
+	depends on EFI_RUNTIME_WRAPPERS && (X86_64 || ARM64)
 	default y
 	help
 	  Platform Runtime Mechanism (PRM) is a firmware interface exposing a

drivers/acpi/prmt.c

@@ -224,6 +224,30 @@ static struct prm_handler_info *find_prm_handler(const guid_t *guid)
 #define UPDATE_LOCK_ALREADY_HELD 	4
 #define UPDATE_UNLOCK_WITHOUT_LOCK 	5
 
+int acpi_call_prm_handler(guid_t handler_guid, void *param_buffer)
+{
+	struct prm_handler_info *handler = find_prm_handler(&handler_guid);
+	struct prm_module_info *module = find_prm_module(&handler_guid);
+	struct prm_context_buffer context;
+	efi_status_t status;
+
+	if (!module || !handler)
+		return -ENODEV;
+
+	memset(&context, 0, sizeof(context));
+	ACPI_COPY_NAMESEG(context.signature, "PRMC");
+	context.identifier         = handler->guid;
+	context.static_data_buffer = handler->static_data_buffer_addr;
+	context.mmio_ranges        = module->mmio_info;
+
+	status = efi_call_acpi_prm_handler(handler->handler_addr,
+					   (u64)param_buffer,
+					   &context);
+
+	return efi_status_to_err(status);
+}
+EXPORT_SYMBOL_GPL(acpi_call_prm_handler);
+
 /*
  * This is the PlatformRtMechanism opregion space handler.
  * @function: indicates the read/write. In fact as the PlatformRtMechanism
@@ -277,9 +301,9 @@ static acpi_status acpi_platformrt_space_handler(u32 function,
 		context.static_data_buffer = handler->static_data_buffer_addr;
 		context.mmio_ranges = module->mmio_info;
 
-		status = efi_call_virt_pointer(handler, handler_addr,
-					       handler->acpi_param_buffer_addr,
-					       &context);
+		status = efi_call_acpi_prm_handler(handler->handler_addr,
+						   handler->acpi_param_buffer_addr,
+						   &context);
 		if (status == EFI_SUCCESS) {
 			buffer->prm_status = PRM_HANDLER_SUCCESS;
 		} else {