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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-19 03:51:48 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-19 03:51:48 +0400
commit507a03c1cba0e32309223d23d19a1bfc0916c140 (patch)
tree8da15f9c635733948a73bfe35cb50e1195702952 /drivers/acpi/acpica/rscreate.c
parentbe405411f712489f2f780ab085e1069e8fb85f19 (diff)
parent79ba0db69c5887f1ad4ed51d58894e7e889084b0 (diff)
downloadlinux-507a03c1cba0e32309223d23d19a1bfc0916c140.tar.xz
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
This includes initial support for the recently published ACPI 5.0 spec. In particular, support for the "hardware-reduced" bit that eliminates the dependency on legacy hardware. APEI has patches resulting from testing on real hardware. Plus other random fixes. * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: (52 commits) acpi/apei/einj: Add extensions to EINJ from rev 5.0 of acpi spec intel_idle: Split up and provide per CPU initialization func ACPI processor: Remove unneeded variable passed by acpi_processor_hotadd_init V2 ACPI processor: Remove unneeded cpuidle_unregister_driver call intel idle: Make idle driver more robust intel_idle: Fix a cast to pointer from integer of different size warning in intel_idle ACPI: kernel-parameters.txt : Add intel_idle.max_cstate intel_idle: remove redundant local_irq_disable() call ACPI processor: Fix error path, also remove sysdev link ACPI: processor: fix acpi_get_cpuid for UP processor intel_idle: fix API misuse ACPI APEI: Convert atomicio routines ACPI: Export interfaces for ioremapping/iounmapping ACPI registers ACPI: Fix possible alignment issues with GAS 'address' references ACPI, ia64: Use SRAT table rev to use 8bit or 16/32bit PXM fields (ia64) ACPI, x86: Use SRAT table rev to use 8bit or 32bit PXM fields (x86/x86-64) ACPI: Store SRAT table revision ACPI, APEI, Resolve false conflict between ACPI NVS and APEI ACPI, Record ACPI NVS regions ACPI, APEI, EINJ, Refine the fix of resource conflict ...
Diffstat (limited to 'drivers/acpi/acpica/rscreate.c')
-rw-r--r--drivers/acpi/acpica/rscreate.c69
1 files changed, 67 insertions, 2 deletions
diff --git a/drivers/acpi/acpica/rscreate.c b/drivers/acpi/acpica/rscreate.c
index 4ce6e1147e80..46d6eb38ae66 100644
--- a/drivers/acpi/acpica/rscreate.c
+++ b/drivers/acpi/acpica/rscreate.c
@@ -5,7 +5,7 @@
******************************************************************************/
/*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -51,6 +51,70 @@ ACPI_MODULE_NAME("rscreate")
/*******************************************************************************
*
+ * FUNCTION: acpi_buffer_to_resource
+ *
+ * PARAMETERS: aml_buffer - Pointer to the resource byte stream
+ * aml_buffer_length - Length of the aml_buffer
+ * resource_ptr - Where the converted resource is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Convert a raw AML buffer to a resource list
+ *
+ ******************************************************************************/
+acpi_status
+acpi_buffer_to_resource(u8 *aml_buffer,
+ u16 aml_buffer_length,
+ struct acpi_resource **resource_ptr)
+{
+ acpi_status status;
+ acpi_size list_size_needed;
+ void *resource;
+ void *current_resource_ptr;
+
+ /*
+ * Note: we allow AE_AML_NO_RESOURCE_END_TAG, since an end tag
+ * is not required here.
+ */
+
+ /* Get the required length for the converted resource */
+
+ status = acpi_rs_get_list_length(aml_buffer, aml_buffer_length,
+ &list_size_needed);
+ if (status == AE_AML_NO_RESOURCE_END_TAG) {
+ status = AE_OK;
+ }
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+
+ /* Allocate a buffer for the converted resource */
+
+ resource = ACPI_ALLOCATE_ZEROED(list_size_needed);
+ current_resource_ptr = resource;
+ if (!resource) {
+ return (AE_NO_MEMORY);
+ }
+
+ /* Perform the AML-to-Resource conversion */
+
+ status = acpi_ut_walk_aml_resources(aml_buffer, aml_buffer_length,
+ acpi_rs_convert_aml_to_resources,
+ &current_resource_ptr);
+ if (status == AE_AML_NO_RESOURCE_END_TAG) {
+ status = AE_OK;
+ }
+ if (ACPI_FAILURE(status)) {
+ ACPI_FREE(resource);
+ } else {
+ *resource_ptr = resource;
+ }
+
+ return (status);
+}
+
+/*******************************************************************************
+ *
* FUNCTION: acpi_rs_create_resource_list
*
* PARAMETERS: aml_buffer - Pointer to the resource byte stream
@@ -66,9 +130,10 @@ ACPI_MODULE_NAME("rscreate")
* of device resources.
*
******************************************************************************/
+
acpi_status
acpi_rs_create_resource_list(union acpi_operand_object *aml_buffer,
- struct acpi_buffer *output_buffer)
+ struct acpi_buffer * output_buffer)
{
acpi_status status;