net: sh_eth: Add support SH7734

Add define of SH7734 register and sh_eth_reset_hw_crc function.

V3: Rebase net/HEAD.
V2: Do not split line of #if defined.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 28 insertions, 8 deletions

diff --git a/drivers/net/ethernet/renesas/Kconfig b/drivers/net/ethernet/renesas/Kconfig
index 9755b49bbef..3fb2355af37 100644
--- a/drivers/net/ethernet/renesas/Kconfig
+++ b/drivers/net/ethernet/renesas/Kconfig
@@ -7,7 +7,8 @@ config SH_ETH
         depends on SUPERH && \
                 (CPU_SUBTYPE_SH7710 || CPU_SUBTYPE_SH7712 || \
                  CPU_SUBTYPE_SH7763 || CPU_SUBTYPE_SH7619 || \
-                 CPU_SUBTYPE_SH7724 || CPU_SUBTYPE_SH7757)
+                 CPU_SUBTYPE_SH7724 || CPU_SUBTYPE_SH7734 || \
+                 CPU_SUBTYPE_SH7757)
         select CRC32
         select NET_CORE
         select MII
@@ -16,4 +17,4 @@ config SH_ETH
         ---help---
           Renesas SuperH Ethernet device driver.
           This driver supporting CPUs are:
-                - SH7710, SH7712, SH7763, SH7619, SH7724, and SH7757.
+                - SH7619, SH7710, SH7712, SH7724, SH7734, SH7763 and SH7757.
diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
index 8615961c128..8bdf070ace9 100644
--- a/drivers/net/ethernet/renesas/sh_eth.c
+++ b/drivers/net/ethernet/renesas/sh_eth.c
@@ -1,8 +1,8 @@
 /*
  *  SuperH Ethernet device driver
  *
- *  Copyright (C) 2006-2008 Nobuhiro Iwamatsu
- *  Copyright (C) 2008-2009 Renesas Solutions Corp.
+ *  Copyright (C) 2006-2012 Nobuhiro Iwamatsu
+ *  Copyright (C) 2008-2012 Renesas Solutions Corp.
  *
  *  This program is free software; you can redistribute it and/or modify it
  *  under the terms and conditions of the GNU General Public License,
@@ -38,6 +38,7 @@
 #include <linux/slab.h>
 #include <linux/ethtool.h>
 #include <linux/if_vlan.h>
+#include <linux/clk.h>
 #include <linux/sh_eth.h>
 
 #include "sh_eth.h"
@@ -279,8 +280,9 @@ static struct sh_eth_cpu_data *sh_eth_get_cpu_data(struct sh_eth_private *mdp)
                 return &sh_eth_my_cpu_data;
 }
 
-#elif defined(CONFIG_CPU_SUBTYPE_SH7763)
+#elif defined(CONFIG_CPU_SUBTYPE_SH7734) || defined(CONFIG_CPU_SUBTYPE_SH7763)
 #define SH_ETH_HAS_TSU  1
+static void sh_eth_reset_hw_crc(struct net_device *ndev);
 static void sh_eth_chip_reset(struct net_device *ndev)
 {
         struct sh_eth_private *mdp = netdev_priv(ndev);
@@ -314,6 +316,9 @@ static void sh_eth_reset(struct net_device *ndev)
         sh_eth_write(ndev, 0x0, RDFAR);
         sh_eth_write(ndev, 0x0, RDFXR);
         sh_eth_write(ndev, 0x0, RDFFR);
+
+        /* Reset HW CRC register */
+        sh_eth_reset_hw_crc(ndev);
 }
 
 static void sh_eth_set_duplex(struct net_device *ndev)
@@ -370,8 +375,17 @@ static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
         .no_trimd       = 1,
         .no_ade         = 1,
         .tsu            = 1,
+#if defined(CONFIG_CPU_SUBTYPE_SH7734)
+        .hw_crc     = 1,
+#endif
 };
 
+static void sh_eth_reset_hw_crc(struct net_device *ndev)
+{
+        if (sh_eth_my_cpu_data.hw_crc)
+                sh_eth_write(ndev, 0x0, CSMR);
+}
+
 #elif defined(CONFIG_CPU_SUBTYPE_SH7619)
 #define SH_ETH_RESET_DEFAULT    1
 static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
diff --git a/drivers/net/ethernet/renesas/sh_eth.h b/drivers/net/ethernet/renesas/sh_eth.h
index 57dc2626111..e66de182353 100644
--- a/drivers/net/ethernet/renesas/sh_eth.h
+++ b/drivers/net/ethernet/renesas/sh_eth.h
@@ -1,8 +1,8 @@
 /*
  *  SuperH Ethernet device driver
  *
- *  Copyright (C) 2006-2008 Nobuhiro Iwamatsu
- *  Copyright (C) 2008-2011 Renesas Solutions Corp.
+ *  Copyright (C) 2006-2012 Nobuhiro Iwamatsu
+ *  Copyright (C) 2008-2012 Renesas Solutions Corp.
  *
  *  This program is free software; you can redistribute it and/or modify it
  *  under the terms and conditions of the GNU General Public License,
@@ -98,6 +98,8 @@ enum {
         CEECR,
         MAFCR,
         RTRATE,
+        CSMR,
+        RMII_MII,
 
         /* TSU Absolute address */
         ARSTR,
@@ -172,6 +174,7 @@ static const u16 sh_eth_offset_gigabit[SH_ETH_MAX_REGISTER_OFFSET] = {
         [RMCR]  = 0x0458,
         [RPADIR]        = 0x0460,
         [FCFTR] = 0x0468,
+        [CSMR] = 0x04E4,
 
         [ECMR]  = 0x0500,
         [ECSR]  = 0x0510,
@@ -200,6 +203,7 @@ static const u16 sh_eth_offset_gigabit[SH_ETH_MAX_REGISTER_OFFSET] = {
         [CERCR] = 0x0768,
         [CEECR] = 0x0770,
         [MAFCR] = 0x0778,
+        [RMII_MII] =  0x0790,
 
         [ARSTR] = 0x0000,
         [TSU_CTRST]     = 0x0004,
@@ -377,7 +381,7 @@ static const u16 sh_eth_offset_fast_sh3_sh2[SH_ETH_MAX_REGISTER_OFFSET] = {
 /*
  * Register's bits
  */
-#ifdef CONFIG_CPU_SUBTYPE_SH7763
+#if defined(CONFIG_CPU_SUBTYPE_SH7734) || defined(CONFIG_CPU_SUBTYPE_SH7763)
 /* EDSR */
 enum EDSR_BIT {
         EDSR_ENT = 0x01, EDSR_ENR = 0x02,
@@ -751,6 +755,7 @@ struct sh_eth_cpu_data {
         unsigned rpadir:1;              /* E-DMAC have RPADIR */
         unsigned no_trimd:1;            /* E-DMAC DO NOT have TRIMD */
         unsigned no_ade:1;      /* E-DMAC DO NOT have ADE bit in EESR */
+        unsigned hw_crc:1;      /* E-DMAC have CSMR */
 };
 
 struct sh_eth_private {