Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / net / ax88796.c

diff --git a/qemu/roms/u-boot/drivers/net/ax88796.c b/qemu/roms/u-boot/drivers/net/ax88796.c
new file mode 100644 (file)
index 0000000..c45f646
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/net/ax88796.c
@@ -0,0 +1,144 @@
+/*
+ * (c) 2007 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+#include <common.h>
+#include "ax88796.h"
+
+/*
+ * 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;
+       u16 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* base_addr)
+{
+       u8 prom[32];
+       int i;
+
+       ax88796_mac_read(prom);
+       for (i = 0; i < 6; i++){
+               mac_addr[i] = prom[i];
+       }
+       return 1;
+}