Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

1 files changed, 127 insertions, 74 deletions

diff --git a/include/acpi/acmacros.h b/include/acpi/acmacros.h
index 702cc4e57f5f..f2be2a881730 100644
--- a/include/acpi/acmacros.h
+++ b/include/acpi/acmacros.h
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2005, R. Byron Moore
+ * Copyright (C) 2000 - 2006, R. Byron Moore
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -60,7 +60,7 @@
 
 /*
  * For 16-bit addresses, we have to assume that the upper 32 bits
- * are zero.
+ * (out of 64) are zero.
  */
 #define ACPI_LODWORD(l)                 ((u32)(l))
 #define ACPI_HIDWORD(l)                 ((u32)(0))
@@ -104,30 +104,38 @@
 #define ACPI_FORMAT_UINT64(i)           ACPI_HIDWORD(i),ACPI_LODWORD(i)
 
 /*
- * Extract a byte of data using a pointer.  Any more than a byte and we
- * get into potential aligment issues -- see the STORE macros below
+ * Extract data using a pointer.  Any more than a byte and we
+ * get into potential aligment issues -- see the STORE macros below.
+ * Use with care.
  */
-#define ACPI_GET8(addr)                 (*(u8*)(addr))
+#define ACPI_GET8(ptr)                  *ACPI_CAST_PTR (u8, ptr)
+#define ACPI_GET16(ptr)                 *ACPI_CAST_PTR (u16, ptr)
+#define ACPI_GET32(ptr)                 *ACPI_CAST_PTR (u32, ptr)
+#define ACPI_GET64(ptr)                 *ACPI_CAST_PTR (u64, ptr)
+#define ACPI_SET8(ptr)                  *ACPI_CAST_PTR (u8, ptr)
+#define ACPI_SET16(ptr)                 *ACPI_CAST_PTR (u16, ptr)
+#define ACPI_SET32(ptr)                 *ACPI_CAST_PTR (u32, ptr)
+#define ACPI_SET64(ptr)                 *ACPI_CAST_PTR (u64, ptr)
 
-/* Pointer arithmetic */
-
-#define ACPI_PTR_ADD(t,a,b)             (t *) (void *)((char *)(a) + (acpi_native_uint)(b))
-#define ACPI_PTR_DIFF(a,b)              (acpi_native_uint) ((char *)(a) - (char *)(b))
+/*
+ * Pointer manipulation
+ */
+#define ACPI_CAST_PTR(t, p)             ((t *) (acpi_uintptr_t) (p))
+#define ACPI_CAST_INDIRECT_PTR(t, p)    ((t **) (acpi_uintptr_t) (p))
+#define ACPI_ADD_PTR(t,a,b)             ACPI_CAST_PTR (t, (ACPI_CAST_PTR (u8,(a)) + (acpi_native_uint)(b)))
+#define ACPI_PTR_DIFF(a,b)              (acpi_native_uint) (ACPI_CAST_PTR (u8,(a)) - ACPI_CAST_PTR (u8,(b)))
 
 /* Pointer/Integer type conversions */
 
-#define ACPI_TO_POINTER(i)              ACPI_PTR_ADD (void, (void *) NULL,(acpi_native_uint)i)
+#define ACPI_TO_POINTER(i)              ACPI_ADD_PTR (void,(void *) NULL,(acpi_native_uint) i)
 #define ACPI_TO_INTEGER(p)              ACPI_PTR_DIFF (p,(void *) NULL)
 #define ACPI_OFFSET(d,f)                (acpi_size) ACPI_PTR_DIFF (&(((d *)0)->f),(void *) NULL)
 #define ACPI_FADT_OFFSET(f)             ACPI_OFFSET (FADT_DESCRIPTOR, f)
 
-#define ACPI_CAST_PTR(t, p)             ((t *)(void *)(p))
-#define ACPI_CAST_INDIRECT_PTR(t, p)    ((t **)(void *)(p))
-
 #if ACPI_MACHINE_WIDTH == 16
 #define ACPI_STORE_POINTER(d,s)         ACPI_MOVE_32_TO_32(d,s)
 #define ACPI_PHYSADDR_TO_PTR(i)         (void *)(i)
-#define ACPI_PTR_TO_PHYSADDR(i)         (u32) (char *)(i)
+#define ACPI_PTR_TO_PHYSADDR(i)         (u32) ACPI_CAST_PTR (u8,(i))
 #else
 #define ACPI_PHYSADDR_TO_PTR(i)         ACPI_TO_POINTER(i)
 #define ACPI_PTR_TO_PHYSADDR(i)         ACPI_TO_INTEGER(i)
@@ -202,7 +210,7 @@
 
 #define ACPI_BUFFER_INDEX(buf_len,buf_offset,byte_gran) (buf_offset)
 
-#ifdef ACPI_MISALIGNED_TRANSFERS
+#ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED
 
 /* The hardware supports unaligned transfers, just do the little-endian move */
 
@@ -326,11 +334,19 @@
 #define ACPI_MUL_16(a)                  _ACPI_MUL(a,4)
 #define ACPI_MOD_16(a)                  _ACPI_MOD(a,16)
 
+#define ACPI_DIV_32(a)                  _ACPI_DIV(a,5)
+#define ACPI_MUL_32(a)                  _ACPI_MUL(a,5)
+#define ACPI_MOD_32(a)                  _ACPI_MOD(a,32)
+
 /*
  * Rounding macros (Power of two boundaries only)
  */
-#define ACPI_ROUND_DOWN(value,boundary)      (((acpi_native_uint)(value)) & (~(((acpi_native_uint) boundary)-1)))
-#define ACPI_ROUND_UP(value,boundary)        ((((acpi_native_uint)(value)) + (((acpi_native_uint) boundary)-1)) & (~(((acpi_native_uint) boundary)-1)))
+#define ACPI_ROUND_DOWN(value,boundary)      (((acpi_native_uint)(value)) & \
+                                                                                                (~(((acpi_native_uint) boundary)-1)))
+
+#define ACPI_ROUND_UP(value,boundary)        ((((acpi_native_uint)(value)) + \
+                                                                                                (((acpi_native_uint) boundary)-1)) & \
+                                                                                                (~(((acpi_native_uint) boundary)-1)))
 
 #define ACPI_ROUND_DOWN_TO_32_BITS(a)        ACPI_ROUND_DOWN(a,4)
 #define ACPI_ROUND_DOWN_TO_64_BITS(a)        ACPI_ROUND_DOWN(a,8)
@@ -365,6 +381,14 @@
 #define ACPI_REGISTER_PREPARE_BITS(val, pos, mask)      ((val << pos) & mask)
 #define ACPI_REGISTER_INSERT_VALUE(reg, pos, mask, val)  reg = (reg & (~(mask))) | ACPI_REGISTER_PREPARE_BITS(val, pos, mask)
 
+/* Generate a UUID */
+
+#define ACPI_INIT_UUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
+        (a) & 0xFF, ((a) >> 8) & 0xFF, ((a) >> 16) & 0xFF, ((a) >> 24) & 0xFF, \
+        (b) & 0xFF, ((b) >> 8) & 0xFF, \
+        (c) & 0xFF, ((c) >> 8) & 0xFF, \
+        (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7)
+
 /*
  * An struct acpi_namespace_node * can appear in some contexts,
  * where a pointer to an union acpi_operand_object    can also
@@ -423,57 +447,52 @@
 #define GET_CURRENT_ARG_TYPE(list)      (list & ((u32) 0x1F))
 #define INCREMENT_ARG_LIST(list)        (list >>= ((u32) ARG_TYPE_WIDTH))
 
+#if defined (ACPI_DEBUG_OUTPUT) || !defined (ACPI_NO_ERROR_MESSAGES)
 /*
- * Reporting macros that are never compiled out
+ * Module name is include in both debug and non-debug versions primarily for
+ * error messages. The __FILE__ macro is not very useful for this, because it
+ * often includes the entire pathname to the module
  */
-#define ACPI_PARAM_LIST(pl)                 pl
+#define ACPI_MODULE_NAME(name)          static char ACPI_UNUSED_VAR *_acpi_module_name = name;
+#else
+#define ACPI_MODULE_NAME(name)
+#endif
 
 /*
- * Error reporting.  These versions add callers module and line#.
- *
- * Since _acpi_module_name gets compiled out when ACPI_DEBUG_OUTPUT
- * isn't defined, only use it in debug mode.
+ * Ascii error messages can be configured out
  */
-#ifdef ACPI_DEBUG_OUTPUT
+#ifndef ACPI_NO_ERROR_MESSAGES
+#define AE_INFO                         _acpi_module_name, __LINE__
 
-#define ACPI_REPORT_INFO(fp)                {acpi_ut_report_info(_acpi_module_name,__LINE__,_COMPONENT); \
-                                                                                                acpi_os_printf ACPI_PARAM_LIST(fp);}
-#define ACPI_REPORT_ERROR(fp)               {acpi_ut_report_error(_acpi_module_name,__LINE__,_COMPONENT); \
-                                                                                                acpi_os_printf ACPI_PARAM_LIST(fp);}
-#define ACPI_REPORT_WARNING(fp)             {acpi_ut_report_warning(_acpi_module_name,__LINE__,_COMPONENT); \
-                                                                                                acpi_os_printf ACPI_PARAM_LIST(fp);}
-#define ACPI_REPORT_NSERROR(s,e)            acpi_ns_report_error(_acpi_module_name,__LINE__,_COMPONENT, s, e);
-
-#define ACPI_REPORT_METHOD_ERROR(s,n,p,e)   acpi_ns_report_method_error(_acpi_module_name,__LINE__,_COMPONENT, s, n, p, e);
+/*
+ * Error reporting. Callers module and line number are inserted by AE_INFO,
+ * the plist contains a set of parens to allow variable-length lists.
+ * These macros are used for both the debug and non-debug versions of the code.
+ */
+#define ACPI_INFO(plist)                acpi_ut_info plist
+#define ACPI_WARNING(plist)             acpi_ut_warning plist
+#define ACPI_EXCEPTION(plist)           acpi_ut_exception plist
+#define ACPI_ERROR(plist)               acpi_ut_error plist
+#define ACPI_ERROR_NAMESPACE(s,e)       acpi_ns_report_error (AE_INFO, s, e);
+#define ACPI_ERROR_METHOD(s,n,p,e)      acpi_ns_report_method_error (AE_INFO, s, n, p, e);
 
 #else
 
-#define ACPI_REPORT_INFO(fp)                {acpi_ut_report_info("ACPI",__LINE__,_COMPONENT); \
-                                                                                                acpi_os_printf ACPI_PARAM_LIST(fp);}
-#define ACPI_REPORT_ERROR(fp)               {acpi_ut_report_error("ACPI",__LINE__,_COMPONENT); \
-                                                                                                acpi_os_printf ACPI_PARAM_LIST(fp);}
-#define ACPI_REPORT_WARNING(fp)             {acpi_ut_report_warning("ACPI",__LINE__,_COMPONENT); \
-                                                                                                acpi_os_printf ACPI_PARAM_LIST(fp);}
-#define ACPI_REPORT_NSERROR(s,e)            acpi_ns_report_error("ACPI",__LINE__,_COMPONENT, s, e);
+/* No error messages */
 
-#define ACPI_REPORT_METHOD_ERROR(s,n,p,e)   acpi_ns_report_method_error("ACPI",__LINE__,_COMPONENT, s, n, p, e);
+#define ACPI_INFO(plist)
+#define ACPI_WARNING(plist)
+#define ACPI_EXCEPTION(plist)
+#define ACPI_ERROR(plist)
+#define ACPI_ERROR_NAMESPACE(s,e)
+#define ACPI_ERROR_METHOD(s,n,p,e)
 
 #endif
 
-/* Error reporting.  These versions pass thru the module and line# */
-
-#define _ACPI_REPORT_INFO(a,b,c,fp)         {acpi_ut_report_info(a,b,c); \
-                                                                                                acpi_os_printf ACPI_PARAM_LIST(fp);}
-#define _ACPI_REPORT_ERROR(a,b,c,fp)        {acpi_ut_report_error(a,b,c); \
-                                                                                                acpi_os_printf ACPI_PARAM_LIST(fp);}
-#define _ACPI_REPORT_WARNING(a,b,c,fp)      {acpi_ut_report_warning(a,b,c); \
-                                                                                                acpi_os_printf ACPI_PARAM_LIST(fp);}
-
 /*
  * Debug macros that are conditionally compiled
  */
 #ifdef ACPI_DEBUG_OUTPUT
-#define ACPI_MODULE_NAME(name)          static char ACPI_UNUSED_VAR *_acpi_module_name = name;
 
 /*
  * Common parameters used for debug output functions:
@@ -509,7 +528,7 @@
 #endif
 
 #define ACPI_FUNCTION_TRACE(a)          ACPI_FUNCTION_NAME(a) \
-                                                                                        acpi_ut_trace(ACPI_DEBUG_PARAMETERS)
+                                                                          acpi_ut_trace(ACPI_DEBUG_PARAMETERS)
 #define ACPI_FUNCTION_TRACE_PTR(a,b)    ACPI_FUNCTION_NAME(a) \
                                                                                         acpi_ut_trace_ptr(ACPI_DEBUG_PARAMETERS,(void *)b)
 #define ACPI_FUNCTION_TRACE_U32(a,b)    ACPI_FUNCTION_NAME(a) \
@@ -525,6 +544,9 @@
  * bad form, but having a separate exit macro is very ugly and difficult to maintain.
  * One of the FUNCTION_TRACE macros above must be used in conjunction with these macros
  * so that "_acpi_function_name" is defined.
+ *
+ * Note: the DO_WHILE0 macro is used to prevent some compilers from complaining
+ * about these constructs.
  */
 #ifdef ACPI_USE_DO_WHILE_0
 #define ACPI_DO_WHILE0(a)               do a while(0)
@@ -532,10 +554,55 @@
 #define ACPI_DO_WHILE0(a)               a
 #endif
 
-#define return_VOID                     ACPI_DO_WHILE0 ({acpi_ut_exit(ACPI_DEBUG_PARAMETERS);return;})
-#define return_ACPI_STATUS(s)           ACPI_DO_WHILE0 ({acpi_ut_status_exit(ACPI_DEBUG_PARAMETERS,(s));return((s));})
-#define return_VALUE(s)                 ACPI_DO_WHILE0 ({acpi_ut_value_exit(ACPI_DEBUG_PARAMETERS,(acpi_integer)(s));return((s));})
-#define return_PTR(s)                   ACPI_DO_WHILE0 ({acpi_ut_ptr_exit(ACPI_DEBUG_PARAMETERS,(u8 *)(s));return((s));})
+#define return_VOID                     ACPI_DO_WHILE0 ({ \
+                                                                                        acpi_ut_exit (ACPI_DEBUG_PARAMETERS); \
+                                                                                        return;})
+/*
+ * There are two versions of most of the return macros. The default version is
+ * safer, since it avoids side-effects by guaranteeing that the argument will
+ * not be evaluated twice.
+ *
+ * A less-safe version of the macros is provided for optional use if the
+ * compiler uses excessive CPU stack (for example, this may happen in the
+ * debug case if code optimzation is disabled.)
+ */
+#ifndef ACPI_SIMPLE_RETURN_MACROS
+
+#define return_ACPI_STATUS(s)           ACPI_DO_WHILE0 ({ \
+                                                                                        register acpi_status _s = (s); \
+                                                                                        acpi_ut_status_exit (ACPI_DEBUG_PARAMETERS, _s); \
+                                                                                        return (_s); })
+#define return_PTR(s)                   ACPI_DO_WHILE0 ({ \
+                                                                                        register void *_s = (void *) (s); \
+                                                                                        acpi_ut_ptr_exit (ACPI_DEBUG_PARAMETERS, (u8 *) _s); \
+                                                                                        return (_s); })
+#define return_VALUE(s)                 ACPI_DO_WHILE0 ({ \
+                                                                                        register acpi_integer _s = (s); \
+                                                                                        acpi_ut_value_exit (ACPI_DEBUG_PARAMETERS, _s); \
+                                                                                        return (_s); })
+#define return_UINT8(s)                 ACPI_DO_WHILE0 ({ \
+                                                                                        register u8 _s = (u8) (s); \
+                                                                                        acpi_ut_value_exit (ACPI_DEBUG_PARAMETERS, (acpi_integer) _s); \
+                                                                                        return (_s); })
+#define return_UINT32(s)                ACPI_DO_WHILE0 ({ \
+                                                                                        register u32 _s = (u32) (s); \
+                                                                                        acpi_ut_value_exit (ACPI_DEBUG_PARAMETERS, (acpi_integer) _s); \
+                                                                                        return (_s); })
+#else                           /* Use original less-safe macros */
+
+#define return_ACPI_STATUS(s)           ACPI_DO_WHILE0 ({ \
+                                                                                        acpi_ut_status_exit (ACPI_DEBUG_PARAMETERS, (s)); \
+                                                                                        return((s)); })
+#define return_PTR(s)                   ACPI_DO_WHILE0 ({ \
+                                                                                        acpi_ut_ptr_exit (ACPI_DEBUG_PARAMETERS, (u8 *) (s)); \
+                                                                                        return((s)); })
+#define return_VALUE(s)                 ACPI_DO_WHILE0 ({ \
+                                                                                        acpi_ut_value_exit (ACPI_DEBUG_PARAMETERS, (acpi_integer) (s)); \
+                                                                                        return((s)); })
+#define return_UINT8(s)                 return_VALUE(s)
+#define return_UINT32(s)                return_VALUE(s)
+
+#endif                          /* ACPI_SIMPLE_RETURN_MACROS */
 
 /* Conditional execution */
 
@@ -555,18 +622,6 @@
 #define ACPI_DUMP_PATHNAME(a,b,c,d)     acpi_ns_dump_pathname(a,b,c,d)
 #define ACPI_DUMP_RESOURCE_LIST(a)      acpi_rs_dump_resource_list(a)
 #define ACPI_DUMP_BUFFER(a,b)           acpi_ut_dump_buffer((u8 *)a,b,DB_BYTE_DISPLAY,_COMPONENT)
-#define ACPI_BREAK_MSG(a)               acpi_os_signal (ACPI_SIGNAL_BREAKPOINT,(a))
-
-/*
- * Generate INT3 on ACPI_ERROR (Debug only!)
- */
-#define ACPI_ERROR_BREAK
-#ifdef  ACPI_ERROR_BREAK
-#define ACPI_BREAK_ON_ERROR(lvl)        if ((lvl)&ACPI_ERROR) \
-                                                                                        acpi_os_signal(ACPI_SIGNAL_BREAKPOINT,"Fatal error encountered\n")
-#else
-#define ACPI_BREAK_ON_ERROR(lvl)
-#endif
 
 /*
  * Master debug print macros
@@ -574,17 +629,14 @@
  *    1) Debug print for the current component is enabled
  *    2) Debug error level or trace level for the print statement is enabled
  */
-#define ACPI_DEBUG_PRINT(pl)            acpi_ut_debug_print ACPI_PARAM_LIST(pl)
-#define ACPI_DEBUG_PRINT_RAW(pl)        acpi_ut_debug_print_raw ACPI_PARAM_LIST(pl)
+#define ACPI_DEBUG_PRINT(plist)         acpi_ut_debug_print plist
+#define ACPI_DEBUG_PRINT_RAW(plist)     acpi_ut_debug_print_raw plist
 
 #else
 /*
  * This is the non-debug case -- make everything go away,
  * leaving no executable debug code!
  */
-#define ACPI_MODULE_NAME(name)
-#define _acpi_module_name ""
-
 #define ACPI_DEBUG_EXEC(a)
 #define ACPI_NORMAL_EXEC(a)             a;
 
@@ -607,11 +659,12 @@
 #define ACPI_DUMP_BUFFER(a,b)
 #define ACPI_DEBUG_PRINT(pl)
 #define ACPI_DEBUG_PRINT_RAW(pl)
-#define ACPI_BREAK_MSG(a)
 
 #define return_VOID                     return
 #define return_ACPI_STATUS(s)           return(s)
 #define return_VALUE(s)                 return(s)
+#define return_UINT8(s)                 return(s)
+#define return_UINT32(s)                return(s)
 #define return_PTR(s)                   return(s)
 
 #endif