[U-Boot-Users] [PATCH] net: Add support AX88796L ethernet deivice
goda.yusuke
goda.yusuke at renesas.com
Wed Mar 5 09:08:33 CET 2008
AX88796L is device of NE2000 compatible.
This patch support AX88796L ethernet device.
Signed-off-by: Yusuke Goda <goda.yusuke at renesas.com>
---
drivers/net/ax88796.h | 217 +++++++++++++++++++++++++++++++++++++++++++++++++
drivers/net/ne2000.c | 6 ++
2 files changed, 223 insertions(+), 0 deletions(-)
create mode 100644 drivers/net/ax88796.h
diff --git a/drivers/net/ax88796.h b/drivers/net/ax88796.h
new file mode 100644
index 0000000..069ae80
--- /dev/null
+++ b/drivers/net/ax88796.h
@@ -0,0 +1,217 @@
+/*
+ * AX88796L(NE2000) support
+ *
+ * (c) 2007 Nobuhiro Iwamatsu <iwamatsu at nigauri.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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#ifndef __DRIVERS_AX88796L_H__
+#define __DRIVERS_AX88796L_H__
+
+#define DP_DATA (0x10 << 1)
+#define START_PG 0x40 /* First page of TX buffer */
+#define START_PG2 0x48
+#define STOP_PG 0x80 /* Last page +1 of RX ring */
+#define TX_PAGES 12
+#define RX_START (START_PG+TX_PAGES)
+#define RX_END STOP_PG
+
+#define AX88796L_BASE_ADDRESS CONFIG_DRIVER_NE2000_BASE
+#define AX88796L_BYTE_ACCESS 0x00001000
+#define AX88796L_OFFSET 0x00000400
+#define AX88796L_ADDRESS_BYTE AX88796L_BASE_ADDRESS + \
+ AX88796L_BYTE_ACCESS + AX88796L_OFFSET
+#define AX88796L_REG_MEMR AX88796L_ADDRESS_BYTE + (0x14<<1)
+#define AX88796L_REG_CR AX88796L_ADDRESS_BYTE + (0x00<<1)
+
+#define AX88796L_CR (*(vu_short *)(AX88796L_REG_CR))
+#define AX88796L_MEMR (*(vu_short *)(AX88796L_REG_MEMR))
+
+#define EECS_HIGH (AX88796L_MEMR |= 0x10)
+#define EECS_LOW (AX88796L_MEMR &= 0xef)
+#define EECLK_HIGH (AX88796L_MEMR |= 0x80)
+#define EECLK_LOW (AX88796L_MEMR &= 0x7f)
+#define EEDI_HIGH (AX88796L_MEMR |= 0x20)
+#define EEDI_LOW (AX88796L_MEMR &= 0xdf)
+#define EEDO ((AX88796L_MEMR & 0x40)>>6)
+
+#define PAGE0_SET (AX88796L_CR &= 0x3f)
+#define PAGE1_SET (AX88796L_CR = (AX88796L_CR & 0x3f) | 0x40)
+
+#define BIT_DUMMY 0
+#define MAC_EEP_READ 1
+#define MAC_EEP_WRITE 2
+#define MAC_EEP_ERACE 3
+#define MAC_EEP_EWEN 4
+#define MAC_EEP_EWDS 5
+
+/* R7780MP Specific code */
+#if defined(CONFIG_R7780MP)
+#define ISA_OFFSET 0x1400
+#define DP_IN(_b_, _o_, _d_) (_d_) = \
+ *( (vu_short *) ((_b_) + ((_o_) * 2) + ISA_OFFSET))
+#define DP_OUT(_b_, _o_, _d_) \
+ *((vu_short *)((_b_) + ((_o_) * 2) + ISA_OFFSET)) = (_d_)
+#define DP_IN_DATA(_b_, _d_) (_d_) = *( (vu_short *) ((_b_) + ISA_OFFSET))
+#define DP_OUT_DATA(_b_, _d_) *( (vu_short *) ((_b_)+ISA_OFFSET)) = (_d_)
+#else
+/* Please change for your target boards */
+#define ISA_OFFSET 0x0000
+#define DP_IN(_b_, _o_, _d_) (_d_) = *( (vu_short *)((_b_)+(_o_ )+ISA_OFFSET))
+#define DP_OUT(_b_, _o_, _d_) *((vu_short *)((_b_)+(_o_)+ISA_OFFSET)) = (_d_)
+#define DP_IN_DATA(_b_, _d_) (_d_) = *( (vu_short *) ((_b_)+ISA_OFFSET))
+#define DP_OUT_DATA(_b_, _d_) *( (vu_short *) ((_b_)+ISA_OFFSET)) = (_d_)
+#endif
+
+
+/*
+ * Set 1 bit data
+ */
+static void ax88796_bitset(u32 bit)
+{
+ /* DATA1 */
+ if( bit )
+ EEDI_HIGH;
+ else
+ EEDI_LOW;
+
+ EECLK_LOW;
+ udelay(1000);
+ EECLK_HIGH;
+ udelay(1000);
+ EEDI_LOW;
+}
+
+/*
+ * Get 1 bit data
+ */
+static u8 ax88796_bitget(void)
+{
+ u8 bit;
+
+ EECLK_LOW;
+ udelay(1000);
+ /* DATA */
+ bit = EEDO;
+ EECLK_HIGH;
+ udelay(1000);
+
+ return bit;
+}
+
+/*
+ * Send COMMAND to EEPROM
+ */
+static void ax88796_eep_cmd(u8 cmd)
+{
+ ax88796_bitset(BIT_DUMMY);
+ switch(cmd){
+ case MAC_EEP_READ:
+ ax88796_bitset(1);
+ ax88796_bitset(1);
+ ax88796_bitset(0);
+ break;
+
+ case MAC_EEP_WRITE:
+ ax88796_bitset(1);
+ ax88796_bitset(0);
+ ax88796_bitset(1);
+ break;
+
+ case MAC_EEP_ERACE:
+ ax88796_bitset(1);
+ ax88796_bitset(1);
+ ax88796_bitset(1);
+ break;
+
+ case MAC_EEP_EWEN:
+ ax88796_bitset(1);
+ ax88796_bitset(0);
+ ax88796_bitset(0);
+ break;
+
+ case MAC_EEP_EWDS:
+ ax88796_bitset(1);
+ ax88796_bitset(0);
+ ax88796_bitset(0);
+ break;
+ default:
+ break;
+ }
+}
+
+static void ax88796_eep_setaddr(u16 addr)
+{
+ int i ;
+ for( i = 7 ; i >= 0 ; i-- )
+ ax88796_bitset(addr & (1 << i));
+}
+
+/*
+ * Get data from EEPROM
+ */
+static u16 ax88796_eep_getdata(void)
+{
+ ushort data = 0;
+ int i;
+
+ ax88796_bitget(); /* DUMMY */
+ for( i = 0 ; i < 16 ; i++ ){
+ data <<= 1;
+ data |= ax88796_bitget();
+ }
+ return data;
+}
+
+static void ax88796_mac_read(u8 *buff)
+{
+ int i ;
+ u16 data, addr = 0;
+
+ for( i = 0 ; i < 3; i++ )
+ {
+ EECS_HIGH;
+ EEDI_LOW;
+ udelay(1000);
+ /* READ COMMAND */
+ ax88796_eep_cmd(MAC_EEP_READ);
+ /* ADDRESS */
+ ax88796_eep_setaddr(addr++);
+ /* GET DATA */
+ data = ax88796_eep_getdata();
+ *buff++ = (uchar)(data & 0xff);
+ *buff++ = (uchar)((data >> 8) & 0xff);
+ EECLK_LOW;
+ EEDI_LOW;
+ EECS_LOW;
+ }
+}
+
+int get_prom(u8* mac_addr)
+{
+ u8 prom[32];
+ int i;
+
+ ax88796_mac_read(prom);
+ for (i = 0; i < 6; i++){
+ mac_addr[i] = prom[i];
+ }
+ return 1;
+}
+
+#endif /* __DRIVERS_AX88796L_H__ */
diff --git a/drivers/net/ne2000.c b/drivers/net/ne2000.c
index 4928014..98f6a0b 100644
--- a/drivers/net/ne2000.c
+++ b/drivers/net/ne2000.c
@@ -114,8 +114,13 @@ void uboot_push_tx_done(int key, int val);
/* NE2000 base header file */
#include "ne2000_base.h"
+#if defined(CONFIG_DRIVER_AX88796L)
+/* AX88796L support */
+#include "ax88796.h"
+#else
/* Basic NE2000 chip support */
#include "ne2000.h"
+#endif
static dp83902a_priv_data_t nic; /* just one instance of the card supported */
@@ -133,6 +138,7 @@ dp83902a_init(void)
DEBUG_LINE();
#if defined(NE2000_BASIC_INIT)
+ /* AX88796L doesn't need */
/* Prepare ESA */
DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_PAGE1); /* Select page 1 */
/* Use the address from the serial EEPROM */
--
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