Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 229 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/rslist.c b/drivers/acpi/acpica/rslist.c
new file mode 100644
index 000000000..e46efaa88
--- /dev/null
+++ b/drivers/acpi/acpica/rslist.c
@@ -0,0 +1,229 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/*******************************************************************************
+ *
+ * Module Name: rslist - Linked list utilities
+ *
+ ******************************************************************************/
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acresrc.h"
+
+#define _COMPONENT          ACPI_RESOURCES
+ACPI_MODULE_NAME("rslist")
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_convert_aml_to_resources
+ *
+ * PARAMETERS:  acpi_walk_aml_callback
+ *              resource_ptr            - Pointer to the buffer that will
+ *                                        contain the output structures
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Convert an AML resource to an internal representation of the
+ *              resource that is aligned and easier to access.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_rs_convert_aml_to_resources(u8 * aml,
+				 u32 length,
+				 u32 offset, u8 resource_index, void **context)
+{
+	struct acpi_resource **resource_ptr =
+	    ACPI_CAST_INDIRECT_PTR(struct acpi_resource, context);
+	struct acpi_resource *resource;
+	union aml_resource *aml_resource;
+	struct acpi_rsconvert_info *conversion_table;
+	acpi_status status;
+
+	ACPI_FUNCTION_TRACE(rs_convert_aml_to_resources);
+
+	/*
+	 * Check that the input buffer and all subsequent pointers into it
+	 * are aligned on a native word boundary. Most important on IA64
+	 */
+	resource = *resource_ptr;
+	if (ACPI_IS_MISALIGNED(resource)) {
+		ACPI_WARNING((AE_INFO,
+			      "Misaligned resource pointer %p", resource));
+	}
+
+	/* Get the appropriate conversion info table */
+
+	aml_resource = ACPI_CAST_PTR(union aml_resource, aml);
+
+	if (acpi_ut_get_resource_type(aml) == ACPI_RESOURCE_NAME_SERIAL_BUS) {
+		if (aml_resource->common_serial_bus.type >
+		    AML_RESOURCE_MAX_SERIALBUSTYPE) {
+			conversion_table = NULL;
+		} else {
+			/* This is an I2C, SPI, UART, or CSI2 serial_bus descriptor */
+
+			conversion_table =
+			    acpi_gbl_convert_resource_serial_bus_dispatch
+			    [aml_resource->common_serial_bus.type];
+		}
+	} else {
+		conversion_table =
+		    acpi_gbl_get_resource_dispatch[resource_index];
+	}
+
+	if (!conversion_table) {
+		ACPI_ERROR((AE_INFO,
+			    "Invalid/unsupported resource descriptor: Type 0x%2.2X",
+			    resource_index));
+		return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE);
+	}
+
+	/* Convert the AML byte stream resource to a local resource struct */
+
+	status =
+	    acpi_rs_convert_aml_to_resource(resource, aml_resource,
+					    conversion_table);
+	if (ACPI_FAILURE(status)) {
+		ACPI_EXCEPTION((AE_INFO, status,
+				"Could not convert AML resource (Type 0x%X)",
+				*aml));
+		return_ACPI_STATUS(status);
+	}
+
+	if (!resource->length) {
+		ACPI_EXCEPTION((AE_INFO, status,
+				"Zero-length resource returned from RsConvertAmlToResource"));
+	}
+
+	ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
+			  "Type %.2X, AmlLength %.2X InternalLength %.2X\n",
+			  acpi_ut_get_resource_type(aml), length,
+			  resource->length));
+
+	/* Point to the next structure in the output buffer */
+
+	*resource_ptr = ACPI_NEXT_RESOURCE(resource);
+	return_ACPI_STATUS(AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_convert_resources_to_aml
+ *
+ * PARAMETERS:  resource            - Pointer to the resource linked list
+ *              aml_size_needed     - Calculated size of the byte stream
+ *                                    needed from calling acpi_rs_get_aml_length()
+ *                                    The size of the output_buffer is
+ *                                    guaranteed to be >= aml_size_needed
+ *              output_buffer       - Pointer to the buffer that will
+ *                                    contain the byte stream
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Takes the resource linked list and parses it, creating a
+ *              byte stream of resources in the caller's output buffer
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_convert_resources_to_aml(struct acpi_resource *resource,
+				 acpi_size aml_size_needed, u8 * output_buffer)
+{
+	u8 *aml = output_buffer;
+	u8 *end_aml = output_buffer + aml_size_needed;
+	struct acpi_rsconvert_info *conversion_table;
+	acpi_status status;
+
+	ACPI_FUNCTION_TRACE(rs_convert_resources_to_aml);
+
+	/* Walk the resource descriptor list, convert each descriptor */
+
+	while (aml < end_aml) {
+
+		/* Validate the (internal) Resource Type */
+
+		if (resource->type > ACPI_RESOURCE_TYPE_MAX) {
+			ACPI_ERROR((AE_INFO,
+				    "Invalid descriptor type (0x%X) in resource list",
+				    resource->type));
+			return_ACPI_STATUS(AE_BAD_DATA);
+		}
+
+		/* Sanity check the length. It must not be zero, or we loop forever */
+
+		if (!resource->length) {
+			ACPI_ERROR((AE_INFO,
+				    "Invalid zero length descriptor in resource list\n"));
+			return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
+		}
+
+		/* Perform the conversion */
+
+		if (resource->type == ACPI_RESOURCE_TYPE_SERIAL_BUS) {
+			if (resource->data.common_serial_bus.type >
+			    AML_RESOURCE_MAX_SERIALBUSTYPE) {
+				conversion_table = NULL;
+			} else {
+				/* This is an I2C, SPI, UART or CSI2 serial_bus descriptor */
+
+				conversion_table =
+				    acpi_gbl_convert_resource_serial_bus_dispatch
+				    [resource->data.common_serial_bus.type];
+			}
+		} else {
+			conversion_table =
+			    acpi_gbl_set_resource_dispatch[resource->type];
+		}
+
+		if (!conversion_table) {
+			ACPI_ERROR((AE_INFO,
+				    "Invalid/unsupported resource descriptor: Type 0x%2.2X",
+				    resource->type));
+			return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE);
+		}
+
+		status = acpi_rs_convert_resource_to_aml(resource,
+						         ACPI_CAST_PTR(union
+								       aml_resource,
+								       aml),
+							 conversion_table);
+		if (ACPI_FAILURE(status)) {
+			ACPI_EXCEPTION((AE_INFO, status,
+					"Could not convert resource (type 0x%X) to AML",
+					resource->type));
+			return_ACPI_STATUS(status);
+		}
+
+		/* Perform final sanity check on the new AML resource descriptor */
+
+		status =
+		    acpi_ut_validate_resource(NULL,
+					      ACPI_CAST_PTR(union aml_resource,
+							    aml), NULL);
+		if (ACPI_FAILURE(status)) {
+			return_ACPI_STATUS(status);
+		}
+
+		/* Check for end-of-list, normal exit */
+
+		if (resource->type == ACPI_RESOURCE_TYPE_END_TAG) {
+
+			/* An End Tag indicates the end of the input Resource Template */
+
+			return_ACPI_STATUS(AE_OK);
+		}
+
+		/*
+		 * Extract the total length of the new descriptor and set the
+		 * Aml to point to the next (output) resource descriptor
+		 */
+		aml += acpi_ut_get_descriptor_length(aml);
+
+		/* Point to the next input resource descriptor */
+
+		resource = ACPI_NEXT_RESOURCE(resource);
+	}
+
+	/* Completed buffer, but did not find an end_tag resource descriptor */
+
+	return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
+}