diff options
Diffstat (limited to 'arch/blackfin/lib/outs.S')
| -rw-r--r-- | arch/blackfin/lib/outs.S | 57 |
1 files changed, 30 insertions, 27 deletions
diff --git a/arch/blackfin/lib/outs.S b/arch/blackfin/lib/outs.S index 4c3da8ae094..06a5e674401 100644 --- a/arch/blackfin/lib/outs.S +++ b/arch/blackfin/lib/outs.S @@ -1,30 +1,11 @@ /* - * File: arch/blackfin/lib/outs.S - * Based on: - * Author: Bas Vermeulen <bas@buyways.nl> + * Implementation of outs{bwl} for BlackFin processors using zero overhead loops. * - * Created: Tue Mar 22 15:27:24 CEST 2005 - * Description: Implementation of outs{bwl} for BlackFin processors using zero overhead loops. + * Copyright 2005-2009 Analog Devices Inc. + * 2005 BuyWays BV + * Bas Vermeulen <bas@buyways.nl> * - * Modified: Copyright (C) 2005 Bas Vermeulen, BuyWays BV <bas@buyways.nl> - * Copyright 2004-2006 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 + * Licensed under the GPL-2. */ #include <linux/linkage.h> @@ -32,6 +13,8 @@ .align 2 ENTRY(_outsl) + CC = R2 == 0; + IF CC JUMP 1f; P0 = R0; /* P0 = port */ P1 = R1; /* P1 = address */ P2 = R2; /* P2 = count */ @@ -39,10 +22,12 @@ ENTRY(_outsl) LSETUP( .Llong_loop_s, .Llong_loop_e) LC0 = P2; .Llong_loop_s: R0 = [P1++]; .Llong_loop_e: [P0] = R0; - RTS; +1: RTS; ENDPROC(_outsl) ENTRY(_outsw) + CC = R2 == 0; + IF CC JUMP 1f; P0 = R0; /* P0 = port */ P1 = R1; /* P1 = address */ P2 = R2; /* P2 = count */ @@ -50,10 +35,12 @@ ENTRY(_outsw) LSETUP( .Lword_loop_s, .Lword_loop_e) LC0 = P2; .Lword_loop_s: R0 = W[P1++]; .Lword_loop_e: W[P0] = R0; - RTS; +1: RTS; ENDPROC(_outsw) ENTRY(_outsb) + CC = R2 == 0; + IF CC JUMP 1f; P0 = R0; /* P0 = port */ P1 = R1; /* P1 = address */ P2 = R2; /* P2 = count */ @@ -61,5 +48,21 @@ ENTRY(_outsb) LSETUP( .Lbyte_loop_s, .Lbyte_loop_e) LC0 = P2; .Lbyte_loop_s: R0 = B[P1++]; .Lbyte_loop_e: B[P0] = R0; - RTS; +1: RTS; ENDPROC(_outsb) + +ENTRY(_outsw_8) + CC = R2 == 0; + IF CC JUMP 1f; + 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; +1: RTS; +ENDPROC(_outsw_8) |