PcAtChipsetPkg/PciHostBridgeDxe/X64/IoFifo.asm

   1 ;------------------------------------------------------------------------------
   2 ;
   3 ; Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
   4 ; This program and the accompanying materials
   5 ; are licensed and made available under the terms and conditions of the BSD License
   6 ; which accompanies this distribution.  The full text of the license may be found at
   7 ; http://opensource.org/licenses/bsd-license.php.
   8 ;
   9 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11 ;
  12 ;------------------------------------------------------------------------------
  13
  14     .code
  15
  16 ;------------------------------------------------------------------------------
  17 ;  VOID
  18 ;  EFIAPI
  19 ;  IoReadFifo8 (
  20 ;    IN UINTN                  Port,              // rcx
  21 ;    IN UINTN                  Size,              // rdx
  22 ;    IN VOID                   *Buffer            // r8
  23 ;    );
  24 ;------------------------------------------------------------------------------
  25 IoReadFifo8 PROC
  26     cld
  27     xchg    rcx, rdx
  28     xchg    rdi, r8             ; rdi: buffer address; r8: save rdi
  29 rep insb
  30     mov     rdi, r8             ; restore rdi
  31     ret
  32 IoReadFifo8 ENDP
  33
  34 ;------------------------------------------------------------------------------
  35 ;  VOID
  36 ;  EFIAPI
  37 ;  IoReadFifo16 (
  38 ;    IN UINTN                  Port,              // rcx
  39 ;    IN UINTN                  Size,              // rdx
  40 ;    IN VOID                   *Buffer            // r8
  41 ;    );
  42 ;------------------------------------------------------------------------------
  43 IoReadFifo16 PROC
  44     cld
  45     xchg    rcx, rdx
  46     xchg    rdi, r8             ; rdi: buffer address; r8: save rdi
  47 rep insw
  48     mov     rdi, r8             ; restore rdi
  49     ret
  50 IoReadFifo16 ENDP
  51
  52 ;------------------------------------------------------------------------------
  53 ;  VOID
  54 ;  EFIAPI
  55 ;  IoReadFifo32 (
  56 ;    IN UINTN                  Port,              // rcx
  57 ;    IN UINTN                  Size,              // rdx
  58 ;    IN VOID                   *Buffer            // r8
  59 ;    );
  60 ;------------------------------------------------------------------------------
  61 IoReadFifo32 PROC
  62     cld
  63     xchg    rcx, rdx
  64     xchg    rdi, r8             ; rdi: buffer address; r8: save rdi
  65 rep insd
  66     mov     rdi, r8             ; restore rdi
  67     ret
  68 IoReadFifo32 ENDP
  69
  70 ;------------------------------------------------------------------------------
  71 ;  VOID
  72 ;  EFIAPI
  73 ;  IoWriteFifo8 (
  74 ;    IN UINTN                  Port,              // rcx
  75 ;    IN UINTN                  Size,              // rdx
  76 ;    IN VOID                   *Buffer            // r8
  77 ;    );
  78 ;------------------------------------------------------------------------------
  79 IoWriteFifo8 PROC
  80     cld
  81     xchg    rcx, rdx
  82     xchg    rsi, r8             ; rsi: buffer address; r8: save rsi
  83 rep outsb
  84     mov     rsi, r8             ; restore rsi
  85     ret
  86 IoWriteFifo8 ENDP
  87
  88 ;------------------------------------------------------------------------------
  89 ;  VOID
  90 ;  EFIAPI
  91 ;  IoWriteFifo16 (
  92 ;    IN UINTN                  Port,              // rcx
  93 ;    IN UINTN                  Size,              // rdx
  94 ;    IN VOID                   *Buffer            // r8
  95 ;    );
  96 ;------------------------------------------------------------------------------
  97 IoWriteFifo16 PROC
  98     cld
  99     xchg    rcx, rdx
 100     xchg    rsi, r8             ; rsi: buffer address; r8: save rsi
 101 rep outsw
 102     mov     rsi, r8             ; restore rsi
 103     ret
 104 IoWriteFifo16 ENDP
 105
 106 ;------------------------------------------------------------------------------
 107 ;  VOID
 108 ;  EFIAPI
 109 ;  IoWriteFifo32 (
 110 ;    IN UINTN                  Port,              // rcx
 111 ;    IN UINTN                  Size,              // rdx
 112 ;    IN VOID                   *Buffer            // r8
 113 ;    );
 114 ;------------------------------------------------------------------------------
 115 IoWriteFifo32 PROC
 116     cld
 117     xchg    rcx, rdx
 118     xchg    rsi, r8             ; rsi: buffer address; r8: save rsi
 119 rep outsd
 120     mov     rsi, r8             ; restore rsi
 121     ret
 122 IoWriteFifo32 ENDP
 123
 124     END
 125