From ce9f99ddb59628f41dc534e892368a7d66dfc774 Mon Sep 17 00:00:00 2001
From: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Date: Thu, 28 Aug 2008 13:40:52 +0900
Subject: [PATCH] sh: rsk7203: Add support pkt_data_pull and pkt_data_push
function
Add function of smc911x, pkt_data_pull and pkt_data_push.
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
---
board/rsk7203/rsk7203.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/board/rsk7203/rsk7203.c b/board/rsk7203/rsk7203.c
index beb943e85b..2d74359437 100644
--- a/board/rsk7203/rsk7203.c
+++ b/board/rsk7203/rsk7203.c
@@ -48,3 +48,24 @@ int dram_init(void)
void led_set_state(unsigned short value)
{
}
+
+/*
+ * The RSK board has the SMSC9118 wired up 'incorrectly'.
+ * Byte-swapping is necessary, and so poor performance is inevitable.
+ * This problem cannot evade by the swap function of CHIP, this can
+ * evade by software Byte-swapping.
+ * And this has problem by FIFO access only. pkt_data_pull/pkt_data_push
+ * functions necessary to solve this problem.
+ */
+u32 pkt_data_pull(u32 addr)
+{
+ volatile u16 *addr_16 = (u16 *)addr;
+ return (u32)((swab16(*addr_16) << 16) & 0xFFFF0000)\
+ | swab16(*(addr_16 + 1));
+}
+
+void pkt_data_push(u32 addr, u32 val)
+{
+ *(volatile u16 *)(addr + 2) = swab16((u16)val);
+ *(volatile u16 *)(addr) = swab16((u16)(val >> 16));
+}
--
2.39.5