1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_compat.h b/drivers/scsi/lpfc/lpfc_compat.h
new file mode 100644
index 00000000000..646649fe962
--- /dev/null
+++ b/drivers/scsi/lpfc/lpfc_compat.h
@@ -0,0 +1,97 @@
+/*******************************************************************
+ * This file is part of the Emulex Linux Device Driver for         *
+ * Enterprise Fibre Channel Host Bus Adapters.                     *
+ * Refer to the README file included with this package for         *
+ * driver version and adapter support.                             *
+ * Copyright (C) 2004 Emulex Corporation.                          *
+ * www.emulex.com                                                  *
+ *                                                                 *
+ * 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, a copy of which    *
+ * can be found in the file COPYING included with this package.    *
+ *******************************************************************/
+
+/*
+ * $Id: lpfc_compat.h 1.32 2005/01/25 17:51:45EST sf_support Exp  $
+ *
+ * This file provides macros to aid compilation in the Linux 2.4 kernel
+ * over various platform architectures.
+ */
+
+/*******************************************************************
+Note: HBA's SLI memory contains little-endian LW.
+Thus to access it from a little-endian host,
+memcpy_toio() and memcpy_fromio() can be used.
+However on a big-endian host, copy 4 bytes at a time,
+using writel() and readl().
+ *******************************************************************/
+
+#if __BIG_ENDIAN
+
+static inline void
+lpfc_memcpy_to_slim(void __iomem *dest, void *src, unsigned int bytes)
+{
+	uint32_t __iomem *dest32;
+	uint32_t *src32;
+	unsigned int four_bytes;
+
+
+	dest32  = (uint32_t __iomem *) dest;
+	src32  = (uint32_t *) src;
+
+	/* write input bytes, 4 bytes at a time */
+	for (four_bytes = bytes /4; four_bytes > 0; four_bytes--) {
+		writel( *src32, dest32);
+		readl(dest32); /* flush */
+		dest32++;
+		src32++;
+	}
+
+	return;
+}
+
+static inline void
+lpfc_memcpy_from_slim( void *dest, void __iomem *src, unsigned int bytes)
+{
+	uint32_t *dest32;
+	uint32_t __iomem *src32;
+	unsigned int four_bytes;
+
+
+	dest32  = (uint32_t *) dest;
+	src32  = (uint32_t __iomem *) src;
+
+	/* read input bytes, 4 bytes at a time */
+	for (four_bytes = bytes /4; four_bytes > 0; four_bytes--) {
+		*dest32 = readl( src32);
+		dest32++;
+		src32++;
+	}
+
+	return;
+}
+
+#else
+
+static inline void
+lpfc_memcpy_to_slim( void __iomem *dest, void *src, unsigned int bytes)
+{
+	/* actually returns 1 byte past dest */
+	memcpy_toio( dest, src, bytes);
+}
+
+static inline void
+lpfc_memcpy_from_slim( void *dest, void __iomem *src, unsigned int bytes)
+{
+	/* actually returns 1 byte past dest */
+	memcpy_fromio( dest, src, bytes);
+}
+
+#endif	/* __BIG_ENDIAN */