5906967638
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
80 lines
2.1 KiB
ArmAsm
80 lines
2.1 KiB
ArmAsm
/*
|
|
* File: arch/blackfin/lib/outs.S
|
|
* Based on:
|
|
* Author: Bas Vermeulen <bas@buyways.nl>
|
|
*
|
|
* Created: Tue Mar 22 15:27:24 CEST 2005
|
|
* Description: Implementation of outs{bwl} for BlackFin processors using zero overhead loops.
|
|
*
|
|
* Modified: Copyright (C) 2005 Bas Vermeulen, BuyWays BV <bas@buyways.nl>
|
|
* Copyright 2004-2008 Analog Devices Inc.
|
|
*
|
|
* Bugs: Enter bugs at http://blackfin.uclinux.org/
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, see the file COPYING, or write
|
|
* to the Free Software Foundation, Inc.,
|
|
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
|
|
.align 2
|
|
|
|
ENTRY(_outsl)
|
|
P0 = R0; /* P0 = port */
|
|
P1 = R1; /* P1 = address */
|
|
P2 = R2; /* P2 = count */
|
|
|
|
LSETUP( .Llong_loop_s, .Llong_loop_e) LC0 = P2;
|
|
.Llong_loop_s: R0 = [P1++];
|
|
.Llong_loop_e: [P0] = R0;
|
|
RTS;
|
|
ENDPROC(_outsl)
|
|
|
|
ENTRY(_outsw)
|
|
P0 = R0; /* P0 = port */
|
|
P1 = R1; /* P1 = address */
|
|
P2 = R2; /* P2 = count */
|
|
|
|
LSETUP( .Lword_loop_s, .Lword_loop_e) LC0 = P2;
|
|
.Lword_loop_s: R0 = W[P1++];
|
|
.Lword_loop_e: W[P0] = R0;
|
|
RTS;
|
|
ENDPROC(_outsw)
|
|
|
|
ENTRY(_outsb)
|
|
P0 = R0; /* P0 = port */
|
|
P1 = R1; /* P1 = address */
|
|
P2 = R2; /* P2 = count */
|
|
|
|
LSETUP( .Lbyte_loop_s, .Lbyte_loop_e) LC0 = P2;
|
|
.Lbyte_loop_s: R0 = B[P1++];
|
|
.Lbyte_loop_e: B[P0] = R0;
|
|
RTS;
|
|
ENDPROC(_outsb)
|
|
|
|
ENTRY(_outsw_8)
|
|
P0 = R0; /* P0 = port */
|
|
P1 = R1; /* P1 = address */
|
|
P2 = R2; /* P2 = count */
|
|
|
|
LSETUP( .Lword8_loop_s, .Lword8_loop_e) LC0 = P2;
|
|
.Lword8_loop_s: R1 = B[P1++];
|
|
R0 = B[P1++];
|
|
R0 = R0 << 8;
|
|
R0 = R0 + R1;
|
|
.Lword8_loop_e: W[P0] = R0;
|
|
RTS;
|
|
ENDPROC(_outsw)
|