1 files changed, 62 insertions, 0 deletions

diff --git a/arch/blackfin/lib/outs.S b/arch/blackfin/lib/outs.S
new file mode 100644
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+++ b/arch/blackfin/lib/outs.S
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+/*
+ * 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 2004-2006 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
+ */
+
+#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;
+
+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;
+
+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;