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author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-23 07:52:36 -0700 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-23 07:52:36 -0700 |
commit | 37224470c8c6d90a4062e76a08d4dc1fcf91fc89 (patch) | |
tree | 627f537177bf8e951c12bec04c4a85f0125f5ece /drivers/acpi/resources/rslist.c | |
parent | e83319510b04dd51a60da8a0b4ccf8b92b3ab1ad (diff) | |
parent | ae6c859b7dcd708efadf1c76279c33db213e3506 (diff) |
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (65 commits)
ACPI: suppress power button event on S3 resume
ACPI: resolve merge conflict between sem2mutex and processor_perflib.c
ACPI: use for_each_possible_cpu() instead of for_each_cpu()
ACPI: delete newly added debugging macros in processor_perflib.c
ACPI: UP build fix for bugzilla-5737
Enable P-state software coordination via _PDC
P-state software coordination for speedstep-centrino
P-state software coordination for acpi-cpufreq
P-state software coordination for ACPI core
ACPI: create acpi_thermal_resume()
ACPI: create acpi_fan_suspend()/acpi_fan_resume()
ACPI: pass pm_message_t from acpi_device_suspend() to root_suspend()
ACPI: create acpi_device_suspend()/acpi_device_resume()
ACPI: replace spin_lock_irq with mutex for ec poll mode
ACPI: Allow a WAN module enable/disable on a Thinkpad X60.
sem2mutex: acpi, acpi_link_lock
ACPI: delete unused acpi_bus_drivers_lock
sem2mutex: drivers/acpi/processor_perflib.c
ACPI add ia64 exports to build acpi_memhotplug as a module
ACPI: asus_acpi_init(): propagate correct return value
...
Manual resolve of conflicts in:
arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
include/acpi/processor.h
Diffstat (limited to 'drivers/acpi/resources/rslist.c')
-rw-r--r-- | drivers/acpi/resources/rslist.c | 102 |
1 files changed, 45 insertions, 57 deletions
diff --git a/drivers/acpi/resources/rslist.c b/drivers/acpi/resources/rslist.c index 1434e786477..29423ce030c 100644 --- a/drivers/acpi/resources/rslist.c +++ b/drivers/acpi/resources/rslist.c @@ -51,76 +51,62 @@ ACPI_MODULE_NAME("rslist") * * FUNCTION: acpi_rs_convert_aml_to_resources * - * PARAMETERS: Aml - Pointer to the resource byte stream - * aml_length - Length of Aml - * output_buffer - Pointer to the buffer that will - * contain the output structures + * PARAMETERS: acpi_walk_aml_callback + * resource_ptr - Pointer to the buffer that will + * contain the output structures * * RETURN: Status * - * DESCRIPTION: Takes the resource byte stream and parses it, creating a - * linked list of resources in the caller's output buffer + * 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 aml_length, u8 * output_buffer) +acpi_rs_convert_aml_to_resources(u8 * aml, + u32 length, + u32 offset, u8 resource_index, void **context) { - struct acpi_resource *resource = (void *)output_buffer; + struct acpi_resource **resource_ptr = + ACPI_CAST_INDIRECT_PTR(struct acpi_resource, context); + struct acpi_resource *resource; acpi_status status; - u8 resource_index; - u8 *end_aml; - - ACPI_FUNCTION_TRACE("rs_convert_aml_to_resources"); - - end_aml = aml + aml_length; - - /* Loop until end-of-buffer or an end_tag is found */ - - while (aml < end_aml) { - /* Validate the Resource Type and Resource Length */ - - status = acpi_ut_validate_resource(aml, &resource_index); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - /* Convert the AML byte stream resource to a local resource struct */ - - status = - acpi_rs_convert_aml_to_resource(resource, - ACPI_CAST_PTR(union - aml_resource, - aml), - acpi_gbl_get_resource_dispatch - [resource_index]); - if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, - "Could not convert AML resource (Type %X)", - *aml)); - return_ACPI_STATUS(status); - } + ACPI_FUNCTION_TRACE(rs_convert_aml_to_resources); - /* Normal exit on completion of an end_tag resource descriptor */ - - if (acpi_ut_get_resource_type(aml) == - ACPI_RESOURCE_NAME_END_TAG) { - return_ACPI_STATUS(AE_OK); - } - - /* Point to the next input AML resource */ - - aml += acpi_ut_get_descriptor_length(aml); - - /* Point to the next structure in the output buffer */ + /* + * 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)); + } - resource = - ACPI_ADD_PTR(struct acpi_resource, resource, - resource->length); + /* Convert the AML byte stream resource to a local resource struct */ + + status = + acpi_rs_convert_aml_to_resource(resource, + ACPI_CAST_PTR(union aml_resource, + aml), + acpi_gbl_get_resource_dispatch + [resource_index]); + if (ACPI_FAILURE(status)) { + ACPI_EXCEPTION((AE_INFO, status, + "Could not convert AML resource (Type %X)", + *aml)); + return_ACPI_STATUS(status); } - /* Did not find an end_tag resource descriptor */ + ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, + "Type %.2X, AmlLength %.2X InternalLength %.2X\n", + acpi_ut_get_resource_type(aml), length, + resource->length)); - return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG); + /* Point to the next structure in the output buffer */ + + *resource_ptr = ACPI_ADD_PTR(void, resource, resource->length); + return_ACPI_STATUS(AE_OK); } /******************************************************************************* @@ -150,11 +136,12 @@ acpi_rs_convert_resources_to_aml(struct acpi_resource *resource, u8 *end_aml = output_buffer + aml_size_needed; acpi_status status; - ACPI_FUNCTION_TRACE("rs_convert_resources_to_aml"); + 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) { @@ -191,6 +178,7 @@ acpi_rs_convert_resources_to_aml(struct acpi_resource *resource, /* 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); |