Attachment 202488 Details for Bug 235876 – thunderx2_uart_workaround.patch

[patch] thunderx2_uart_workaround.patch

file_235876.txt (text/plain), 1.27 KB, created by John Baldwin on 2019-03-01 19:11:20 UTC

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Creator: John Baldwin

Created: 2019-03-01 19:11:20 UTC

Size: 1.27 KB

patch

obsolete

>Index: acpi_resource.c
>===================================================================
>--- acpi_resource.c	(revision 343404)
>+++ acpi_resource.c	(working copy)
>@@ -202,6 +202,7 @@ struct acpi_resource_context {
>     struct acpi_parse_resource_set *set;
>     device_t	dev;
>     void	*context;
>+    bool	ignore_producer_flag;
> };
> 
> #ifdef ACPI_DEBUG_OUTPUT
>@@ -385,7 +386,7 @@ acpi_parse_resource(ACPI_RESOURCE *res, void *cont
> 	}
> 	if (length <= 0)
> 	    break;
>-	if (res->Type == ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64 &&
>+	if (!arc->ignore_producer_flag &&
> 	    res->Data.Address.ProducerConsumer != ACPI_CONSUMER) {
> 	    ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
> 		"ignored %s %s producer\n", name,
>@@ -474,6 +475,12 @@ acpi_parse_resources(device_t dev, ACPI_HANDLE han
>     set->set_init(dev, arg, &arc.context);
>     arc.set = set;
>     arc.dev = dev;
>+    arc.ignore_producer_flag = false;
>+
>+    /* UARTs on ThunderX2 set ResourceProducer on memory resources. */
>+    if (acpi_MatchHid(handle, "ARMH0011") != ACPI_MATCHHID_NOMATCH)
>+	    arc.ignore_producer_flag = true;
>+
>     status = AcpiWalkResources(handle, "_CRS", acpi_parse_resource, &arc);
>     if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
> 	printf("can't fetch resources for %s - %s\n",

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