sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

MdePkg:simplify Fifo API in BaseIoLibIntrinsic

Browse Source 
Simplify IoRead/WriteFifo implement by repeatedly
calling IoRead/Write in the C code.
This can avoid calling assembly code to use string
I/O instructions. With this change Ia32/IoFifo.nasm
and X64/IoFifo.nasm can be removed. Then the source
files for IA32 and X64 are the same.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Signed-off-by: Dun Tan <dun.tan@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Acked-by: Michael D Kinney <michael.d.kinney@intel.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Dun Tan
2023-11-08 18:49:58 -08:00
committed by mergify[bot]
parent 3c73532a8a
commit 1d50544aa2
4 changed files with 222 additions and 259 deletions
Download Patch File Download Diff File Expand all files Collapse all files

131
MdePkg/Library/BaseIoLibIntrinsic/Ia32/IoFifo.nasm
View File

@@ -1,131 +0,0 @@
;------------------------------------------------------------------------------
;
; Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
; Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR>
;
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
;------------------------------------------------------------------------------
SECTION .text
;------------------------------------------------------------------------------
; VOID
; EFIAPI
; IoReadFifo8 (
; IN UINTN Port,
; IN UINTN Size,
; OUT VOID *Buffer
; );
;------------------------------------------------------------------------------
global ASM_PFX(IoReadFifo8)
ASM_PFX(IoReadFifo8):
push edi
cld
mov dx, [esp + 8]
mov ecx, [esp + 12]
mov edi, [esp + 16]
rep insb
pop edi
ret
;------------------------------------------------------------------------------
; VOID
; EFIAPI
; IoReadFifo16 (
; IN UINTN Port,
; IN UINTN Size,
; OUT VOID *Buffer
; );
;------------------------------------------------------------------------------
global ASM_PFX(IoReadFifo16)
ASM_PFX(IoReadFifo16):
push edi
cld
mov dx, [esp + 8]
mov ecx, [esp + 12]
mov edi, [esp + 16]
rep insw
pop edi
ret
;------------------------------------------------------------------------------
; VOID
; EFIAPI
; IoReadFifo32 (
; IN UINTN Port,
; IN UINTN Size,
; OUT VOID *Buffer
; );
;------------------------------------------------------------------------------
global ASM_PFX(IoReadFifo32)
ASM_PFX(IoReadFifo32):
push edi
cld
mov dx, [esp + 8]
mov ecx, [esp + 12]
mov edi, [esp + 16]
rep insd
pop edi
ret
;------------------------------------------------------------------------------
; VOID
; EFIAPI
; IoWriteFifo8 (
; IN UINTN Port,
; IN UINTN Size,
; IN VOID *Buffer
; );
;------------------------------------------------------------------------------
global ASM_PFX(IoWriteFifo8)
ASM_PFX(IoWriteFifo8):
push esi
cld
mov dx, [esp + 8]
mov ecx, [esp + 12]
mov esi, [esp + 16]
rep outsb
pop esi
ret
;------------------------------------------------------------------------------
; VOID
; EFIAPI
; IoWriteFifo16 (
; IN UINTN Port,
; IN UINTN Size,
; IN VOID *Buffer
; );
;------------------------------------------------------------------------------
global ASM_PFX(IoWriteFifo16)
ASM_PFX(IoWriteFifo16):
push esi
cld
mov dx, [esp + 8]
mov ecx, [esp + 12]
mov esi, [esp + 16]
rep outsw
pop esi
ret
;------------------------------------------------------------------------------
; VOID
; EFIAPI
; IoWriteFifo32 (
; IN UINTN Port,
; IN UINTN Size,
; IN VOID *Buffer
; );
;------------------------------------------------------------------------------
global ASM_PFX(IoWriteFifo32)
ASM_PFX(IoWriteFifo32):
push esi
cld
mov dx, [esp + 8]
mov ecx, [esp + 12]
mov esi, [esp + 16]
rep outsd
pop esi
ret