1fd376d979
KVM can substantially boost the speed of the rep insb/insw/insl and rep outsb/outsw/outsl instructions by transferring up to a page of data per VM trap. This change adds assembly handling of the PCI Host Bridge I/O FIFO Reads and Writes. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jordan Justen <jordan.l.justen@intel.com> Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13424 6f19259b-4bc3-4df7-8a09-765794883524
140 lines
3.7 KiB
NASM
140 lines
3.7 KiB
NASM
;------------------------------------------------------------------------------
|
|
;
|
|
; Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
|
|
; This program and the accompanying materials
|
|
; are licensed and made available under the terms and conditions of the BSD License
|
|
; which accompanies this distribution. The full text of the license may be found at
|
|
; http://opensource.org/licenses/bsd-license.php.
|
|
;
|
|
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
;
|
|
;------------------------------------------------------------------------------
|
|
|
|
.586P
|
|
.model flat,C
|
|
.code
|
|
|
|
;------------------------------------------------------------------------------
|
|
; VOID
|
|
; EFIAPI
|
|
; IoReadFifo8 (
|
|
; IN UINTN Port,
|
|
; IN UINTN Size,
|
|
; IN VOID *Buffer
|
|
; );
|
|
;------------------------------------------------------------------------------
|
|
IoReadFifo8 PROC
|
|
push edi
|
|
cld
|
|
mov dx, [esp + 8]
|
|
mov ecx, [esp + 12]
|
|
mov edi, [esp + 16]
|
|
rep insb
|
|
pop edi
|
|
ret
|
|
IoReadFifo8 ENDP
|
|
|
|
;------------------------------------------------------------------------------
|
|
; VOID
|
|
; EFIAPI
|
|
; IoReadFifo16 (
|
|
; IN UINTN Port,
|
|
; IN UINTN Size,
|
|
; IN VOID *Buffer
|
|
; );
|
|
;------------------------------------------------------------------------------
|
|
IoReadFifo16 PROC
|
|
push edi
|
|
cld
|
|
mov dx, [esp + 8]
|
|
mov ecx, [esp + 12]
|
|
mov edi, [esp + 16]
|
|
rep insw
|
|
pop edi
|
|
ret
|
|
IoReadFifo16 ENDP
|
|
|
|
;------------------------------------------------------------------------------
|
|
; VOID
|
|
; EFIAPI
|
|
; IoReadFifo32 (
|
|
; IN UINTN Port,
|
|
; IN UINTN Size,
|
|
; IN VOID *Buffer
|
|
; );
|
|
;------------------------------------------------------------------------------
|
|
IoReadFifo32 PROC
|
|
push edi
|
|
cld
|
|
mov dx, [esp + 8]
|
|
mov ecx, [esp + 12]
|
|
mov edi, [esp + 16]
|
|
rep insd
|
|
pop edi
|
|
ret
|
|
IoReadFifo32 ENDP
|
|
|
|
;------------------------------------------------------------------------------
|
|
; VOID
|
|
; EFIAPI
|
|
; IoWriteFifo8 (
|
|
; IN UINTN Port,
|
|
; IN UINTN Size,
|
|
; IN VOID *Buffer
|
|
; );
|
|
;------------------------------------------------------------------------------
|
|
IoWriteFifo8 PROC
|
|
push esi
|
|
cld
|
|
mov dx, [esp + 8]
|
|
mov ecx, [esp + 12]
|
|
mov esi, [esp + 16]
|
|
rep outsb
|
|
pop esi
|
|
ret
|
|
IoWriteFifo8 ENDP
|
|
|
|
;------------------------------------------------------------------------------
|
|
; VOID
|
|
; EFIAPI
|
|
; IoWriteFifo16 (
|
|
; IN UINTN Port,
|
|
; IN UINTN Size,
|
|
; IN VOID *Buffer
|
|
; );
|
|
;------------------------------------------------------------------------------
|
|
IoWriteFifo16 PROC
|
|
push esi
|
|
cld
|
|
mov dx, [esp + 8]
|
|
mov ecx, [esp + 12]
|
|
mov esi, [esp + 16]
|
|
rep outsw
|
|
pop esi
|
|
ret
|
|
IoWriteFifo16 ENDP
|
|
|
|
;------------------------------------------------------------------------------
|
|
; VOID
|
|
; EFIAPI
|
|
; IoWriteFifo32 (
|
|
; IN UINTN Port,
|
|
; IN UINTN Size,
|
|
; IN VOID *Buffer
|
|
; );
|
|
;------------------------------------------------------------------------------
|
|
IoWriteFifo32 PROC
|
|
push esi
|
|
cld
|
|
mov dx, [esp + 8]
|
|
mov ecx, [esp + 12]
|
|
mov esi, [esp + 16]
|
|
rep outsd
|
|
pop esi
|
|
ret
|
|
IoWriteFifo32 ENDP
|
|
|
|
END
|
|
|