#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/slab.h>
#include <linux/init.h>
#include <linux/types.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
+#include "internal.h"
#define _COMPONENT ACPI_BUS_COMPONENT
-ACPI_MODULE_NAME ("acpi_utils")
-
+ACPI_MODULE_NAME("utils");
/* --------------------------------------------------------------------------
Object Evaluation Helpers
-------------------------------------------------------------------------- */
-
+static void
+acpi_util_eval_error(acpi_handle h, acpi_string p, acpi_status s)
+{
#ifdef ACPI_DEBUG_OUTPUT
-#define acpi_util_eval_error(h,p,s) {\
- char prefix[80] = {'\0'};\
- struct acpi_buffer buffer = {sizeof(prefix), prefix};\
- acpi_get_name(h, ACPI_FULL_PATHNAME, &buffer);\
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Evaluate [%s.%s]: %s\n",\
- (char *) prefix, p, acpi_format_exception(s))); }
+ char prefix[80] = {'\0'};
+ struct acpi_buffer buffer = {sizeof(prefix), prefix};
+ acpi_get_name(h, ACPI_FULL_PATHNAME, &buffer);
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Evaluate [%s.%s]: %s\n",
+ (char *) prefix, p, acpi_format_exception(s)));
#else
-#define acpi_util_eval_error(h,p,s)
+ return;
#endif
-
+}
acpi_status
-acpi_extract_package (
- union acpi_object *package,
- struct acpi_buffer *format,
- struct acpi_buffer *buffer)
+acpi_extract_package(union acpi_object *package,
+ struct acpi_buffer *format, struct acpi_buffer *buffer)
{
- u32 size_required = 0;
- u32 tail_offset = 0;
- char *format_string = NULL;
- u32 format_count = 0;
- u32 i = 0;
- u8 *head = NULL;
- u8 *tail = NULL;
-
- ACPI_FUNCTION_TRACE("acpi_extract_package");
-
- if (!package || (package->type != ACPI_TYPE_PACKAGE) || (package->package.count < 1)) {
- ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid 'package' argument\n"));
- return_ACPI_STATUS(AE_BAD_PARAMETER);
+ u32 size_required = 0;
+ u32 tail_offset = 0;
+ char *format_string = NULL;
+ u32 format_count = 0;
+ u32 i = 0;
+ u8 *head = NULL;
+ u8 *tail = NULL;
+
+
+ if (!package || (package->type != ACPI_TYPE_PACKAGE)
+ || (package->package.count < 1)) {
+ printk(KERN_WARNING PREFIX "Invalid package argument\n");
+ return AE_BAD_PARAMETER;
}
if (!format || !format->pointer || (format->length < 1)) {
- ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid 'format' argument\n"));
- return_ACPI_STATUS(AE_BAD_PARAMETER);
+ printk(KERN_WARNING PREFIX "Invalid format argument\n");
+ return AE_BAD_PARAMETER;
}
if (!buffer) {
- ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid 'buffer' argument\n"));
- return_ACPI_STATUS(AE_BAD_PARAMETER);
+ printk(KERN_WARNING PREFIX "Invalid buffer argument\n");
+ return AE_BAD_PARAMETER;
}
- format_count = (format->length/sizeof(char)) - 1;
+ format_count = (format->length / sizeof(char)) - 1;
if (format_count > package->package.count) {
- ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Format specifies more objects [%d] than exist in package [%d].", format_count, package->package.count));
- return_ACPI_STATUS(AE_BAD_DATA);
+ printk(KERN_WARNING PREFIX "Format specifies more objects [%d]"
+ " than exist in package [%d].\n",
+ format_count, package->package.count);
+ return AE_BAD_DATA;
}
- format_string = (char*)format->pointer;
+ format_string = format->pointer;
/*
* Calculate size_required.
*/
- for (i=0; i<format_count; i++) {
+ for (i = 0; i < format_count; i++) {
union acpi_object *element = &(package->package.elements[i]);
if (!element) {
- return_ACPI_STATUS(AE_BAD_DATA);
+ return AE_BAD_DATA;
}
switch (element->type) {
case ACPI_TYPE_INTEGER:
switch (format_string[i]) {
case 'N':
- size_required += sizeof(acpi_integer);
- tail_offset += sizeof(acpi_integer);
+ size_required += sizeof(u64);
+ tail_offset += sizeof(u64);
break;
case 'S':
- size_required += sizeof(char*) + sizeof(acpi_integer) + sizeof(char);
- tail_offset += sizeof(char*);
+ size_required +=
+ sizeof(char *) + sizeof(u64) +
+ sizeof(char);
+ tail_offset += sizeof(char *);
break;
default:
- ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid package element [%d]: got number, expecing [%c].\n", i, format_string[i]));
- return_ACPI_STATUS(AE_BAD_DATA);
+ printk(KERN_WARNING PREFIX "Invalid package element"
+ " [%d]: got number, expecing"
+ " [%c]\n",
+ i, format_string[i]);
+ return AE_BAD_DATA;
break;
}
break;
case ACPI_TYPE_BUFFER:
switch (format_string[i]) {
case 'S':
- size_required += sizeof(char*) + (element->string.length * sizeof(char)) + sizeof(char);
- tail_offset += sizeof(char*);
+ size_required +=
+ sizeof(char *) +
+ (element->string.length * sizeof(char)) +
+ sizeof(char);
+ tail_offset += sizeof(char *);
break;
case 'B':
- size_required += sizeof(u8*) + (element->buffer.length * sizeof(u8));
- tail_offset += sizeof(u8*);
+ size_required +=
+ sizeof(u8 *) +
+ (element->buffer.length * sizeof(u8));
+ tail_offset += sizeof(u8 *);
break;
default:
- ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid package element [%d] got string/buffer, expecing [%c].\n", i, format_string[i]));
- return_ACPI_STATUS(AE_BAD_DATA);
+ printk(KERN_WARNING PREFIX "Invalid package element"
+ " [%d] got string/buffer,"
+ " expecing [%c]\n",
+ i, format_string[i]);
+ return AE_BAD_DATA;
break;
}
break;
case ACPI_TYPE_PACKAGE:
default:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found unsupported element at index=%d\n", i));
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Found unsupported element at index=%d\n",
+ i));
/* TBD: handle nested packages... */
- return_ACPI_STATUS(AE_SUPPORT);
+ return AE_SUPPORT;
break;
}
}
*/
if (buffer->length < size_required) {
buffer->length = size_required;
- return_ACPI_STATUS(AE_BUFFER_OVERFLOW);
- }
- else if (buffer->length != size_required || !buffer->pointer) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
+ return AE_BUFFER_OVERFLOW;
+ } else if (buffer->length != size_required || !buffer->pointer) {
+ return AE_BAD_PARAMETER;
}
head = buffer->pointer;
/*
* Extract package data.
*/
- for (i=0; i<format_count; i++) {
+ for (i = 0; i < format_count; i++) {
u8 **pointer = NULL;
union acpi_object *element = &(package->package.elements[i]);
if (!element) {
- return_ACPI_STATUS(AE_BAD_DATA);
+ return AE_BAD_DATA;
}
switch (element->type) {
case ACPI_TYPE_INTEGER:
switch (format_string[i]) {
case 'N':
- *((acpi_integer*)head) = element->integer.value;
- head += sizeof(acpi_integer);
+ *((u64 *) head) =
+ element->integer.value;
+ head += sizeof(u64);
break;
case 'S':
- pointer = (u8**)head;
+ pointer = (u8 **) head;
*pointer = tail;
- *((acpi_integer*)tail) = element->integer.value;
- head += sizeof(acpi_integer*);
- tail += sizeof(acpi_integer);
+ *((u64 *) tail) =
+ element->integer.value;
+ head += sizeof(u64 *);
+ tail += sizeof(u64);
/* NULL terminate string */
*tail = (char)0;
tail += sizeof(char);
case ACPI_TYPE_BUFFER:
switch (format_string[i]) {
case 'S':
- pointer = (u8**)head;
+ pointer = (u8 **) head;
*pointer = tail;
- memcpy(tail, element->string.pointer, element->string.length);
- head += sizeof(char*);
+ memcpy(tail, element->string.pointer,
+ element->string.length);
+ head += sizeof(char *);
tail += element->string.length * sizeof(char);
/* NULL terminate string */
*tail = (char)0;
tail += sizeof(char);
break;
case 'B':
- pointer = (u8**)head;
+ pointer = (u8 **) head;
*pointer = tail;
- memcpy(tail, element->buffer.pointer, element->buffer.length);
- head += sizeof(u8*);
+ memcpy(tail, element->buffer.pointer,
+ element->buffer.length);
+ head += sizeof(u8 *);
tail += element->buffer.length * sizeof(u8);
break;
default:
}
}
- return_ACPI_STATUS(AE_OK);
+ return AE_OK;
}
-EXPORT_SYMBOL(acpi_extract_package);
+EXPORT_SYMBOL(acpi_extract_package);
acpi_status
-acpi_evaluate_integer (
- acpi_handle handle,
- acpi_string pathname,
- struct acpi_object_list *arguments,
- unsigned long *data)
+acpi_evaluate_integer(acpi_handle handle,
+ acpi_string pathname,
+ struct acpi_object_list *arguments, unsigned long long *data)
{
- acpi_status status = AE_OK;
- union acpi_object *element;
- struct acpi_buffer buffer = {0,NULL};
-
- ACPI_FUNCTION_TRACE("acpi_evaluate_integer");
+ acpi_status status = AE_OK;
+ union acpi_object element;
+ struct acpi_buffer buffer = { 0, NULL };
if (!data)
- return_ACPI_STATUS(AE_BAD_PARAMETER);
-
- element = kmalloc(sizeof(union acpi_object), GFP_KERNEL);
- if(!element)
- return_ACPI_STATUS(AE_NO_MEMORY);
+ return AE_BAD_PARAMETER;
- memset(element, 0, sizeof(union acpi_object));
buffer.length = sizeof(union acpi_object);
- buffer.pointer = element;
- status = acpi_evaluate_object(handle, pathname, arguments, &buffer);
- if (ACPI_FAILURE(status)) {
- acpi_util_eval_error(handle, pathname, status);
- return_ACPI_STATUS(status);
- }
-
- if (element->type != ACPI_TYPE_INTEGER) {
- acpi_util_eval_error(handle, pathname, AE_BAD_DATA);
- return_ACPI_STATUS(AE_BAD_DATA);
- }
-
- *data = element->integer.value;
- kfree(element);
-
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Return value [%lu]\n", *data));
-
- return_ACPI_STATUS(AE_OK);
-}
-EXPORT_SYMBOL(acpi_evaluate_integer);
-
-
-#if 0
-acpi_status
-acpi_evaluate_string (
- acpi_handle handle,
- acpi_string pathname,
- acpi_object_list *arguments,
- acpi_string *data)
-{
- acpi_status status = AE_OK;
- acpi_object *element = NULL;
- acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
-
- ACPI_FUNCTION_TRACE("acpi_evaluate_string");
-
- if (!data)
- return_ACPI_STATUS(AE_BAD_PARAMETER);
-
+ buffer.pointer = &element;
status = acpi_evaluate_object(handle, pathname, arguments, &buffer);
if (ACPI_FAILURE(status)) {
acpi_util_eval_error(handle, pathname, status);
- return_ACPI_STATUS(status);
+ return status;
}
- element = (acpi_object *) buffer.pointer;
-
- if ((element->type != ACPI_TYPE_STRING)
- || (element->type != ACPI_TYPE_BUFFER)
- || !element->string.length) {
+ if (element.type != ACPI_TYPE_INTEGER) {
acpi_util_eval_error(handle, pathname, AE_BAD_DATA);
- return_ACPI_STATUS(AE_BAD_DATA);
- }
-
- *data = kmalloc(element->string.length + 1, GFP_KERNEL);
- if (!data) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Memory allocation error\n"));
- return_VALUE(-ENOMEM);
+ return AE_BAD_DATA;
}
- memset(*data, 0, element->string.length + 1);
- memcpy(*data, element->string.pointer, element->string.length);
+ *data = element.integer.value;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Return value [%s]\n", *data));
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Return value [%llu]\n", *data));
- acpi_os_free(buffer.pointer);
-
- return_ACPI_STATUS(AE_OK);
+ return AE_OK;
}
-#endif
+EXPORT_SYMBOL(acpi_evaluate_integer);
acpi_status
-acpi_evaluate_reference (
- acpi_handle handle,
- acpi_string pathname,
- struct acpi_object_list *arguments,
- struct acpi_handle_list *list)
+acpi_evaluate_reference(acpi_handle handle,
+ acpi_string pathname,
+ struct acpi_object_list *arguments,
+ struct acpi_handle_list *list)
{
- acpi_status status = AE_OK;
- union acpi_object *package = NULL;
- union acpi_object *element = NULL;
- struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
- u32 i = 0;
+ acpi_status status = AE_OK;
+ union acpi_object *package = NULL;
+ union acpi_object *element = NULL;
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ u32 i = 0;
- ACPI_FUNCTION_TRACE("acpi_evaluate_reference");
if (!list) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
+ return AE_BAD_PARAMETER;
}
/* Evaluate object. */
if (ACPI_FAILURE(status))
goto end;
- package = (union acpi_object *) buffer.pointer;
+ package = buffer.pointer;
if ((buffer.length == 0) || !package) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "No return object (len %X ptr %p)\n",
- (unsigned)buffer.length, package));
+ printk(KERN_ERR PREFIX "No return object (len %X ptr %p)\n",
+ (unsigned)buffer.length, package);
status = AE_BAD_DATA;
acpi_util_eval_error(handle, pathname, status);
goto end;
}
if (package->type != ACPI_TYPE_PACKAGE) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Expecting a [Package], found type %X\n",
- package->type));
+ printk(KERN_ERR PREFIX "Expecting a [Package], found type %X\n",
+ package->type);
status = AE_BAD_DATA;
acpi_util_eval_error(handle, pathname, status);
goto end;
}
if (!package->package.count) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "[Package] has zero elements (%p)\n",
- package));
+ printk(KERN_ERR PREFIX "[Package] has zero elements (%p)\n",
+ package);
status = AE_BAD_DATA;
acpi_util_eval_error(handle, pathname, status);
goto end;
}
if (package->package.count > ACPI_MAX_HANDLES) {
- return_ACPI_STATUS(AE_NO_MEMORY);
+ return AE_NO_MEMORY;
}
list->count = package->package.count;
element = &(package->package.elements[i]);
- if (element->type != ACPI_TYPE_ANY) {
+ if (element->type != ACPI_TYPE_LOCAL_REFERENCE) {
status = AE_BAD_DATA;
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Expecting a [Reference] package element, found type %X\n",
- element->type));
+ printk(KERN_ERR PREFIX
+ "Expecting a [Reference] package element, found type %X\n",
+ element->type);
acpi_util_eval_error(handle, pathname, status);
break;
}
+ if (!element->reference.handle) {
+ printk(KERN_WARNING PREFIX "Invalid reference in"
+ " package %s\n", pathname);
+ status = AE_NULL_ENTRY;
+ break;
+ }
/* Get the acpi_handle. */
list->handles[i] = element->reference.handle;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found reference [%p]\n",
- list->handles[i]));
+ list->handles[i]));
}
-end:
+ end:
if (ACPI_FAILURE(status)) {
list->count = 0;
//kfree(list->handles);
}
- acpi_os_free(buffer.pointer);
+ kfree(buffer.pointer);
- return_ACPI_STATUS(status);
+ return status;
}
-EXPORT_SYMBOL(acpi_evaluate_reference);
+EXPORT_SYMBOL(acpi_evaluate_reference);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff