update to acpica-unix2-20130927
acpica-unix2-20130823
PANKOVs restructure

*** 1,14 ****
- 
  /******************************************************************************
   *
   * Name: hwtimer.c - ACPI Power Management Timer Interface
   *
   *****************************************************************************/
  
  /*
!  * Copyright (C) 2000 - 2011, Intel Corp.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
--- 1,13 ----
  /******************************************************************************
   *
   * Name: hwtimer.c - ACPI Power Management Timer Interface
   *
   *****************************************************************************/
  
  /*
!  * Copyright (C) 2000 - 2013, Intel Corp.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
*** 40,56 ****
--- 39,58 ----
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
   * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGES.
   */
  
+ #define EXPORT_ACPI_INTERFACES
+ 
  #include "acpi.h"
  #include "accommon.h"
  
  #define _COMPONENT          ACPI_HARDWARE
          ACPI_MODULE_NAME    ("hwtimer")
  
  
+ #if (!ACPI_REDUCED_HARDWARE) /* Entire module */
  /******************************************************************************
   *
   * FUNCTION:    AcpiGetTimerResolution
   *
   * PARAMETERS:  Resolution          - Where the resolution is returned
*** 113,124 ****
      if (!Ticks)
      {
          return_ACPI_STATUS (AE_BAD_PARAMETER);
      }
  
!     Status = AcpiHwRead (Ticks, &AcpiGbl_FADT.XPmTimerBlock);
  
      return_ACPI_STATUS (Status);
  }
  
  ACPI_EXPORT_SYMBOL (AcpiGetTimer)
  
--- 115,132 ----
      if (!Ticks)
      {
          return_ACPI_STATUS (AE_BAD_PARAMETER);
      }
  
!     /* ACPI 5.0A: PM Timer is optional */
  
+     if (!AcpiGbl_FADT.XPmTimerBlock.Address)
+     {
+         return_ACPI_STATUS (AE_SUPPORT);
+     }
+ 
+     Status = AcpiHwRead (Ticks, &AcpiGbl_FADT.XPmTimerBlock);
      return_ACPI_STATUS (Status);
  }
  
  ACPI_EXPORT_SYMBOL (AcpiGetTimer)
  
*** 169,178 ****
--- 177,193 ----
      if (!TimeElapsed)
      {
          return_ACPI_STATUS (AE_BAD_PARAMETER);
      }
  
+     /* ACPI 5.0A: PM Timer is optional */
+ 
+     if (!AcpiGbl_FADT.XPmTimerBlock.Address)
+     {
+         return_ACPI_STATUS (AE_SUPPORT);
+     }
+ 
      /*
       * Compute Tick Delta:
       * Handle (max one) timer rollovers on 24-bit versus 32-bit timers.
       */
      if (StartTicks < EndTicks)
*** 201,216 ****
      }
  
      /*
       * Compute Duration (Requires a 64-bit multiply and divide):
       *
!      * TimeElapsed = (DeltaTicks * 1000000) / PM_TIMER_FREQUENCY;
       */
!     Status = AcpiUtShortDivide (((UINT64) DeltaTicks) * 1000000,
!                 PM_TIMER_FREQUENCY, &Quotient, NULL);
  
      *TimeElapsed = (UINT32) Quotient;
      return_ACPI_STATUS (Status);
  }
  
  ACPI_EXPORT_SYMBOL (AcpiGetTimerDuration)
  
--- 216,233 ----
      }
  
      /*
       * Compute Duration (Requires a 64-bit multiply and divide):
       *
!      * TimeElapsed (microseconds) =
!      *  (DeltaTicks * ACPI_USEC_PER_SEC) / ACPI_PM_TIMER_FREQUENCY;
       */
!     Status = AcpiUtShortDivide (((UINT64) DeltaTicks) * ACPI_USEC_PER_SEC,
!                 ACPI_PM_TIMER_FREQUENCY, &Quotient, NULL);
  
      *TimeElapsed = (UINT32) Quotient;
      return_ACPI_STATUS (Status);
  }
  
  ACPI_EXPORT_SYMBOL (AcpiGetTimerDuration)
  
+ #endif /* !ACPI_REDUCED_HARDWARE */