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![Mike Frysinger](/assets/img/avatar_default.png)
The environment is the canonical storage location of the mac address, so we're killing off the global data location and moving everything to querying the env directly. Also, do not bother checking the EEPROM if the env is setup. This simplifies the code greatly. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Wolfgang Dnek <wd@denx.de> CC: Ben Warren <biggerbadderben@gmail.com> CC: Rolf Offermanns <rof@sysgo.de> CC: Erik Stahlman <erik@vt.edu> CC: Daris A Nevil <dnevil@snmc.com> CC: Sascha Hauer <s.hauer@pengutronix.de>
908 lines
22 KiB
C
908 lines
22 KiB
C
/*------------------------------------------------------------------------
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* lan91c96.c
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* This is a driver for SMSC's LAN91C96 single-chip Ethernet device, based
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* on the SMC91111 driver from U-boot.
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Rolf Offermanns <rof@sysgo.de>
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*
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* Copyright (C) 2001 Standard Microsystems Corporation (SMSC)
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* Developed by Simple Network Magic Corporation (SNMC)
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* Copyright (C) 1996 by Erik Stahlman (ES)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Information contained in this file was obtained from the LAN91C96
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* manual from SMC. To get a copy, if you really want one, you can find
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* information under www.smsc.com.
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*
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*
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* "Features" of the SMC chip:
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* 6144 byte packet memory. ( for the 91C96 )
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* EEPROM for configuration
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* AUI/TP selection ( mine has 10Base2/10BaseT select )
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*
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* Arguments:
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* io = for the base address
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* irq = for the IRQ
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*
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* author:
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* Erik Stahlman ( erik@vt.edu )
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* Daris A Nevil ( dnevil@snmc.com )
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*
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*
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* Hardware multicast code from Peter Cammaert ( pc@denkart.be )
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*
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* Sources:
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* o SMSC LAN91C96 databook (www.smsc.com)
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* o smc91111.c (u-boot driver)
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* o smc9194.c (linux kernel driver)
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* o lan91c96.c (Intel Diagnostic Manager driver)
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*
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* History:
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* 04/30/03 Mathijs Haarman Modified smc91111.c (u-boot version)
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* for lan91c96
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*---------------------------------------------------------------------------
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*/
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#include <common.h>
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#include <command.h>
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#include "lan91c96.h"
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#include <net.h>
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/*------------------------------------------------------------------------
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*
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* Configuration options, for the experienced user to change.
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*
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-------------------------------------------------------------------------*/
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/* Use power-down feature of the chip */
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#define POWER_DOWN 0
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/*
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* Wait time for memory to be free. This probably shouldn't be
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* tuned that much, as waiting for this means nothing else happens
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* in the system
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*/
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#define MEMORY_WAIT_TIME 16
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#define SMC_DEBUG 0
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#if (SMC_DEBUG > 2 )
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#define PRINTK3(args...) printf(args)
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#else
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#define PRINTK3(args...)
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#endif
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#if SMC_DEBUG > 1
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#define PRINTK2(args...) printf(args)
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#else
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#define PRINTK2(args...)
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#endif
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#ifdef SMC_DEBUG
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#define PRINTK(args...) printf(args)
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#else
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#define PRINTK(args...)
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#endif
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/*------------------------------------------------------------------------
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*
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* The internal workings of the driver. If you are changing anything
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* here with the SMC stuff, you should have the datasheet and know
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* what you are doing.
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*
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*------------------------------------------------------------------------
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*/
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#define CARDNAME "LAN91C96"
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#define SMC_BASE_ADDRESS CONFIG_LAN91C96_BASE
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#define SMC_DEV_NAME "LAN91C96"
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#define SMC_ALLOC_MAX_TRY 5
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#define SMC_TX_TIMEOUT 30
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#define ETH_ZLEN 60
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#ifdef CONFIG_LAN91C96_USE_32_BIT
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#define USE_32_BIT 1
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#else
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#undef USE_32_BIT
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#endif
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/*-----------------------------------------------------------------
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*
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* The driver can be entered at any of the following entry points.
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*
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*-----------------------------------------------------------------
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*/
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extern int eth_init (bd_t * bd);
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extern void eth_halt (void);
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extern int eth_rx (void);
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extern int eth_send (volatile void *packet, int length);
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#if 0
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static int smc_hw_init (void);
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#endif
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/*
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* This is called by register_netdev(). It is responsible for
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* checking the portlist for the SMC9000 series chipset. If it finds
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* one, then it will initialize the device, find the hardware information,
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* and sets up the appropriate device parameters.
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* NOTE: Interrupts are *OFF* when this procedure is called.
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*
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* NB:This shouldn't be static since it is referred to externally.
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*/
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int smc_init (void);
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/*
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* This is called by unregister_netdev(). It is responsible for
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* cleaning up before the driver is finally unregistered and discarded.
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*/
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void smc_destructor (void);
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/*
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* The kernel calls this function when someone wants to use the device,
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* typically 'ifconfig ethX up'.
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*/
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static int smc_open (bd_t *bd);
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/*
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* This is called by the kernel in response to 'ifconfig ethX down'. It
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* is responsible for cleaning up everything that the open routine
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* does, and maybe putting the card into a powerdown state.
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*/
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static int smc_close (void);
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/*
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* This is a separate procedure to handle the receipt of a packet, to
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* leave the interrupt code looking slightly cleaner
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*/
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static int smc_rcv (void);
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/* See if a MAC address is defined in the current environment. If so use it. If not
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. print a warning and set the environment and other globals with the default.
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. If an EEPROM is present it really should be consulted.
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*/
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int smc_get_ethaddr(bd_t *bd);
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int get_rom_mac(unsigned char *v_rom_mac);
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/* ------------------------------------------------------------
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* Internal routines
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* ------------------------------------------------------------
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*/
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static unsigned char smc_mac_addr[] = { 0xc0, 0x00, 0x00, 0x1b, 0x62, 0x9c };
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/*
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* This function must be called before smc_open() if you want to override
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* the default mac address.
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*/
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void smc_set_mac_addr (const unsigned char *addr)
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{
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int i;
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for (i = 0; i < sizeof (smc_mac_addr); i++) {
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smc_mac_addr[i] = addr[i];
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}
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}
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/*
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* smc_get_macaddr is no longer used. If you want to override the default
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* mac address, call smc_get_mac_addr as a part of the board initialisation.
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*/
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#if 0
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void smc_get_macaddr (byte * addr)
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{
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/* MAC ADDRESS AT FLASHBLOCK 1 / OFFSET 0x10 */
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unsigned char *dnp1110_mac = (unsigned char *) (0xE8000000 + 0x20010);
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int i;
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for (i = 0; i < 6; i++) {
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addr[0] = *(dnp1110_mac + 0);
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addr[1] = *(dnp1110_mac + 1);
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addr[2] = *(dnp1110_mac + 2);
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addr[3] = *(dnp1110_mac + 3);
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addr[4] = *(dnp1110_mac + 4);
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addr[5] = *(dnp1110_mac + 5);
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}
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}
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#endif /* 0 */
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/***********************************************
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* Show available memory *
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***********************************************/
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void dump_memory_info (void)
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{
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word mem_info;
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word old_bank;
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old_bank = SMC_inw (LAN91C96_BANK_SELECT) & 0xF;
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SMC_SELECT_BANK (0);
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mem_info = SMC_inw (LAN91C96_MIR);
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PRINTK2 ("Memory: %4d available\n", (mem_info >> 8) * 2048);
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SMC_SELECT_BANK (old_bank);
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}
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/*
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* A rather simple routine to print out a packet for debugging purposes.
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*/
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#if SMC_DEBUG > 2
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static void print_packet (byte *, int);
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#endif
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/* #define tx_done(dev) 1 */
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/* this does a soft reset on the device */
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static void smc_reset (void);
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/* Enable Interrupts, Receive, and Transmit */
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static void smc_enable (void);
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/* this puts the device in an inactive state */
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static void smc_shutdown (void);
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static int poll4int (byte mask, int timeout)
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{
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int tmo = get_timer (0) + timeout * CONFIG_SYS_HZ;
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int is_timeout = 0;
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word old_bank = SMC_inw (LAN91C96_BANK_SELECT);
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PRINTK2 ("Polling...\n");
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SMC_SELECT_BANK (2);
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while ((SMC_inw (LAN91C96_INT_STATS) & mask) == 0) {
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if (get_timer (0) >= tmo) {
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is_timeout = 1;
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break;
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}
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}
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/* restore old bank selection */
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SMC_SELECT_BANK (old_bank);
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if (is_timeout)
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return 1;
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else
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return 0;
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}
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/*
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* Function: smc_reset( void )
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* Purpose:
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* This sets the SMC91111 chip to its normal state, hopefully from whatever
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* mess that any other DOS driver has put it in.
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*
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* Maybe I should reset more registers to defaults in here? SOFTRST should
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* do that for me.
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*
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* Method:
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* 1. send a SOFT RESET
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* 2. wait for it to finish
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* 3. enable autorelease mode
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* 4. reset the memory management unit
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* 5. clear all interrupts
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*
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*/
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static void smc_reset (void)
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{
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PRINTK2 ("%s:smc_reset\n", SMC_DEV_NAME);
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/* This resets the registers mostly to defaults, but doesn't
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affect EEPROM. That seems unnecessary */
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SMC_SELECT_BANK (0);
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SMC_outw (LAN91C96_RCR_SOFT_RST, LAN91C96_RCR);
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udelay (10);
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/* Disable transmit and receive functionality */
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SMC_outw (0, LAN91C96_RCR);
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SMC_outw (0, LAN91C96_TCR);
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/* set the control register */
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SMC_SELECT_BANK (1);
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SMC_outw (SMC_inw (LAN91C96_CONTROL) | LAN91C96_CTR_BIT_8,
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LAN91C96_CONTROL);
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/* Disable all interrupts */
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SMC_outb (0, LAN91C96_INT_MASK);
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}
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/*
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* Function: smc_enable
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* Purpose: let the chip talk to the outside work
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* Method:
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* 1. Initialize the Memory Configuration Register
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* 2. Enable the transmitter
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* 3. Enable the receiver
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*/
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static void smc_enable ()
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{
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PRINTK2 ("%s:smc_enable\n", SMC_DEV_NAME);
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SMC_SELECT_BANK (0);
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/* Initialize the Memory Configuration Register. See page
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49 of the LAN91C96 data sheet for details. */
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SMC_outw (LAN91C96_MCR_TRANSMIT_PAGES, LAN91C96_MCR);
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/* Initialize the Transmit Control Register */
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SMC_outw (LAN91C96_TCR_TXENA, LAN91C96_TCR);
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/* Initialize the Receive Control Register
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* FIXME:
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* The promiscuous bit set because I could not receive ARP reply
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* packets from the server when I send a ARP request. It only works
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* when I set the promiscuous bit
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*/
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SMC_outw (LAN91C96_RCR_RXEN | LAN91C96_RCR_PRMS, LAN91C96_RCR);
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}
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/*
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* Function: smc_shutdown
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* Purpose: closes down the SMC91xxx chip.
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* Method:
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* 1. zero the interrupt mask
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* 2. clear the enable receive flag
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* 3. clear the enable xmit flags
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*
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* TODO:
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* (1) maybe utilize power down mode.
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* Why not yet? Because while the chip will go into power down mode,
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* the manual says that it will wake up in response to any I/O requests
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* in the register space. Empirical results do not show this working.
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*/
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static void smc_shutdown ()
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{
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PRINTK2 (CARDNAME ":smc_shutdown\n");
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/* no more interrupts for me */
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SMC_SELECT_BANK (2);
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SMC_outb (0, LAN91C96_INT_MASK);
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/* and tell the card to stay away from that nasty outside world */
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SMC_SELECT_BANK (0);
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SMC_outb (0, LAN91C96_RCR);
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SMC_outb (0, LAN91C96_TCR);
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}
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/*
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* Function: smc_hardware_send_packet(struct net_device * )
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* Purpose:
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* This sends the actual packet to the SMC9xxx chip.
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*
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* Algorithm:
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* First, see if a saved_skb is available.
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* ( this should NOT be called if there is no 'saved_skb'
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* Now, find the packet number that the chip allocated
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* Point the data pointers at it in memory
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* Set the length word in the chip's memory
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* Dump the packet to chip memory
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* Check if a last byte is needed ( odd length packet )
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* if so, set the control flag right
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* Tell the card to send it
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* Enable the transmit interrupt, so I know if it failed
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* Free the kernel data if I actually sent it.
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*/
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static int smc_send_packet (volatile void *packet, int packet_length)
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{
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byte packet_no;
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unsigned long ioaddr;
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byte *buf;
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int length;
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int numPages;
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int try = 0;
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int time_out;
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byte status;
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PRINTK3 ("%s:smc_hardware_send_packet\n", SMC_DEV_NAME);
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length = ETH_ZLEN < packet_length ? packet_length : ETH_ZLEN;
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/* allocate memory
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** The MMU wants the number of pages to be the number of 256 bytes
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** 'pages', minus 1 ( since a packet can't ever have 0 pages :) )
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**
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** The 91C111 ignores the size bits, but the code is left intact
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** for backwards and future compatibility.
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**
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** Pkt size for allocating is data length +6 (for additional status
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** words, length and ctl!)
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**
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** If odd size then last byte is included in this header.
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*/
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numPages = ((length & 0xfffe) + 6);
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numPages >>= 8; /* Divide by 256 */
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if (numPages > 7) {
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printf ("%s: Far too big packet error. \n", SMC_DEV_NAME);
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return 0;
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}
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/* now, try to allocate the memory */
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SMC_SELECT_BANK (2);
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SMC_outw (LAN91C96_MMUCR_ALLOC_TX | numPages, LAN91C96_MMU);
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again:
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try++;
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time_out = MEMORY_WAIT_TIME;
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do {
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status = SMC_inb (LAN91C96_INT_STATS);
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if (status & LAN91C96_IST_ALLOC_INT) {
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SMC_outb (LAN91C96_IST_ALLOC_INT, LAN91C96_INT_STATS);
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break;
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}
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} while (--time_out);
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if (!time_out) {
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PRINTK2 ("%s: memory allocation, try %d failed ...\n",
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SMC_DEV_NAME, try);
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if (try < SMC_ALLOC_MAX_TRY)
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goto again;
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else
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return 0;
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}
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PRINTK2 ("%s: memory allocation, try %d succeeded ...\n",
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SMC_DEV_NAME, try);
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/* I can send the packet now.. */
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ioaddr = SMC_BASE_ADDRESS;
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buf = (byte *) packet;
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/* If I get here, I _know_ there is a packet slot waiting for me */
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packet_no = SMC_inb (LAN91C96_ARR);
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if (packet_no & LAN91C96_ARR_FAILED) {
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/* or isn't there? BAD CHIP! */
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printf ("%s: Memory allocation failed. \n", SMC_DEV_NAME);
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return 0;
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}
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/* we have a packet address, so tell the card to use it */
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SMC_outb (packet_no, LAN91C96_PNR);
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/* point to the beginning of the packet */
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SMC_outw (LAN91C96_PTR_AUTO_INCR, LAN91C96_POINTER);
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PRINTK3 ("%s: Trying to xmit packet of length %x\n",
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SMC_DEV_NAME, length);
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#if SMC_DEBUG > 2
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printf ("Transmitting Packet\n");
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print_packet (buf, length);
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#endif
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/* send the packet length ( +6 for status, length and ctl byte )
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and the status word ( set to zeros ) */
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#ifdef USE_32_BIT
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SMC_outl ((length + 6) << 16, LAN91C96_DATA_HIGH);
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#else
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SMC_outw (0, LAN91C96_DATA_HIGH);
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/* send the packet length ( +6 for status words, length, and ctl */
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SMC_outw ((length + 6), LAN91C96_DATA_HIGH);
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#endif /* USE_32_BIT */
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/* send the actual data
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* I _think_ it's faster to send the longs first, and then
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* mop up by sending the last word. It depends heavily
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* on alignment, at least on the 486. Maybe it would be
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* a good idea to check which is optimal? But that could take
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* almost as much time as is saved?
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*/
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#ifdef USE_32_BIT
|
|
SMC_outsl (LAN91C96_DATA_HIGH, buf, length >> 2);
|
|
if (length & 0x2)
|
|
SMC_outw (*((word *) (buf + (length & 0xFFFFFFFC))),
|
|
LAN91C96_DATA_HIGH);
|
|
#else
|
|
SMC_outsw (LAN91C96_DATA_HIGH, buf, (length) >> 1);
|
|
#endif /* USE_32_BIT */
|
|
|
|
/* Send the last byte, if there is one. */
|
|
if ((length & 1) == 0) {
|
|
SMC_outw (0, LAN91C96_DATA_HIGH);
|
|
} else {
|
|
SMC_outw (buf[length - 1] | 0x2000, LAN91C96_DATA_HIGH);
|
|
}
|
|
|
|
/* and let the chipset deal with it */
|
|
SMC_outw (LAN91C96_MMUCR_ENQUEUE, LAN91C96_MMU);
|
|
|
|
/* poll for TX INT */
|
|
if (poll4int (LAN91C96_MSK_TX_INT, SMC_TX_TIMEOUT)) {
|
|
/* sending failed */
|
|
PRINTK2 ("%s: TX timeout, sending failed...\n", SMC_DEV_NAME);
|
|
|
|
/* release packet */
|
|
SMC_outw (LAN91C96_MMUCR_RELEASE_TX, LAN91C96_MMU);
|
|
|
|
/* wait for MMU getting ready (low) */
|
|
while (SMC_inw (LAN91C96_MMU) & LAN91C96_MMUCR_NO_BUSY) {
|
|
udelay (10);
|
|
}
|
|
|
|
PRINTK2 ("MMU ready\n");
|
|
|
|
|
|
return 0;
|
|
} else {
|
|
/* ack. int */
|
|
SMC_outw (LAN91C96_IST_TX_INT, LAN91C96_INT_STATS);
|
|
|
|
PRINTK2 ("%s: Sent packet of length %d \n", SMC_DEV_NAME, length);
|
|
|
|
/* release packet */
|
|
SMC_outw (LAN91C96_MMUCR_RELEASE_TX, LAN91C96_MMU);
|
|
|
|
/* wait for MMU getting ready (low) */
|
|
while (SMC_inw (LAN91C96_MMU) & LAN91C96_MMUCR_NO_BUSY) {
|
|
udelay (10);
|
|
}
|
|
|
|
PRINTK2 ("MMU ready\n");
|
|
}
|
|
|
|
return length;
|
|
}
|
|
|
|
/*-------------------------------------------------------------------------
|
|
* smc_destructor( struct net_device * dev )
|
|
* Input parameters:
|
|
* dev, pointer to the device structure
|
|
*
|
|
* Output:
|
|
* None.
|
|
*--------------------------------------------------------------------------
|
|
*/
|
|
void smc_destructor ()
|
|
{
|
|
PRINTK2 (CARDNAME ":smc_destructor\n");
|
|
}
|
|
|
|
|
|
/*
|
|
* Open and Initialize the board
|
|
*
|
|
* Set up everything, reset the card, etc ..
|
|
*
|
|
*/
|
|
static int smc_open (bd_t *bd)
|
|
{
|
|
int i, err; /* used to set hw ethernet address */
|
|
|
|
PRINTK2 ("%s:smc_open\n", SMC_DEV_NAME);
|
|
|
|
/* reset the hardware */
|
|
|
|
smc_reset ();
|
|
smc_enable ();
|
|
|
|
SMC_SELECT_BANK (1);
|
|
|
|
err = smc_get_ethaddr (bd); /* set smc_mac_addr, and sync it with u-boot globals */
|
|
if (err < 0)
|
|
return -1;
|
|
#ifdef USE_32_BIT
|
|
for (i = 0; i < 6; i += 2) {
|
|
word address;
|
|
|
|
address = smc_mac_addr[i + 1] << 8;
|
|
address |= smc_mac_addr[i];
|
|
SMC_outw (address, LAN91C96_IA0 + i);
|
|
}
|
|
#else
|
|
for (i = 0; i < 6; i++)
|
|
SMC_outb (smc_mac_addr[i], LAN91C96_IA0 + i);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
/*-------------------------------------------------------------
|
|
*
|
|
* smc_rcv - receive a packet from the card
|
|
*
|
|
* There is ( at least ) a packet waiting to be read from
|
|
* chip-memory.
|
|
*
|
|
* o Read the status
|
|
* o If an error, record it
|
|
* o otherwise, read in the packet
|
|
*-------------------------------------------------------------
|
|
*/
|
|
static int smc_rcv ()
|
|
{
|
|
int packet_number;
|
|
word status;
|
|
word packet_length;
|
|
int is_error = 0;
|
|
|
|
#ifdef USE_32_BIT
|
|
dword stat_len;
|
|
#endif
|
|
|
|
|
|
SMC_SELECT_BANK (2);
|
|
packet_number = SMC_inw (LAN91C96_FIFO);
|
|
|
|
if (packet_number & LAN91C96_FIFO_RXEMPTY) {
|
|
return 0;
|
|
}
|
|
|
|
PRINTK3 ("%s:smc_rcv\n", SMC_DEV_NAME);
|
|
/* start reading from the start of the packet */
|
|
SMC_outw (LAN91C96_PTR_READ | LAN91C96_PTR_RCV |
|
|
LAN91C96_PTR_AUTO_INCR, LAN91C96_POINTER);
|
|
|
|
/* First two words are status and packet_length */
|
|
#ifdef USE_32_BIT
|
|
stat_len = SMC_inl (LAN91C96_DATA_HIGH);
|
|
status = stat_len & 0xffff;
|
|
packet_length = stat_len >> 16;
|
|
#else
|
|
status = SMC_inw (LAN91C96_DATA_HIGH);
|
|
packet_length = SMC_inw (LAN91C96_DATA_HIGH);
|
|
#endif
|
|
|
|
packet_length &= 0x07ff; /* mask off top bits */
|
|
|
|
PRINTK2 ("RCV: STATUS %4x LENGTH %4x\n", status, packet_length);
|
|
|
|
if (!(status & FRAME_FILTER)) {
|
|
/* Adjust for having already read the first two words */
|
|
packet_length -= 4; /*4; */
|
|
|
|
|
|
/* set odd length for bug in LAN91C111, */
|
|
/* which never sets RS_ODDFRAME */
|
|
/* TODO ? */
|
|
|
|
|
|
#ifdef USE_32_BIT
|
|
PRINTK3 (" Reading %d dwords (and %d bytes) \n",
|
|
packet_length >> 2, packet_length & 3);
|
|
/* QUESTION: Like in the TX routine, do I want
|
|
to send the DWORDs or the bytes first, or some
|
|
mixture. A mixture might improve already slow PIO
|
|
performance */
|
|
SMC_insl (LAN91C96_DATA_HIGH, NetRxPackets[0], packet_length >> 2);
|
|
/* read the left over bytes */
|
|
if (packet_length & 3) {
|
|
int i;
|
|
|
|
byte *tail = (byte *) (NetRxPackets[0] + (packet_length & ~3));
|
|
dword leftover = SMC_inl (LAN91C96_DATA_HIGH);
|
|
|
|
for (i = 0; i < (packet_length & 3); i++)
|
|
*tail++ = (byte) (leftover >> (8 * i)) & 0xff;
|
|
}
|
|
#else
|
|
PRINTK3 (" Reading %d words and %d byte(s) \n",
|
|
(packet_length >> 1), packet_length & 1);
|
|
SMC_insw (LAN91C96_DATA_HIGH, NetRxPackets[0], packet_length >> 1);
|
|
|
|
#endif /* USE_32_BIT */
|
|
|
|
#if SMC_DEBUG > 2
|
|
printf ("Receiving Packet\n");
|
|
print_packet (NetRxPackets[0], packet_length);
|
|
#endif
|
|
} else {
|
|
/* error ... */
|
|
/* TODO ? */
|
|
is_error = 1;
|
|
}
|
|
|
|
while (SMC_inw (LAN91C96_MMU) & LAN91C96_MMUCR_NO_BUSY)
|
|
udelay (1); /* Wait until not busy */
|
|
|
|
/* error or good, tell the card to get rid of this packet */
|
|
SMC_outw (LAN91C96_MMUCR_RELEASE_RX, LAN91C96_MMU);
|
|
|
|
while (SMC_inw (LAN91C96_MMU) & LAN91C96_MMUCR_NO_BUSY)
|
|
udelay (1); /* Wait until not busy */
|
|
|
|
if (!is_error) {
|
|
/* Pass the packet up to the protocol layers. */
|
|
NetReceive (NetRxPackets[0], packet_length);
|
|
return packet_length;
|
|
} else {
|
|
return 0;
|
|
}
|
|
|
|
}
|
|
|
|
/*----------------------------------------------------
|
|
* smc_close
|
|
*
|
|
* this makes the board clean up everything that it can
|
|
* and not talk to the outside world. Caused by
|
|
* an 'ifconfig ethX down'
|
|
*
|
|
-----------------------------------------------------*/
|
|
static int smc_close ()
|
|
{
|
|
PRINTK2 ("%s:smc_close\n", SMC_DEV_NAME);
|
|
|
|
/* clear everything */
|
|
smc_shutdown ();
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if SMC_DEBUG > 2
|
|
static void print_packet (byte * buf, int length)
|
|
{
|
|
#if 0
|
|
int i;
|
|
int remainder;
|
|
int lines;
|
|
|
|
printf ("Packet of length %d \n", length);
|
|
|
|
lines = length / 16;
|
|
remainder = length % 16;
|
|
|
|
for (i = 0; i < lines; i++) {
|
|
int cur;
|
|
|
|
for (cur = 0; cur < 8; cur++) {
|
|
byte a, b;
|
|
|
|
a = *(buf++);
|
|
b = *(buf++);
|
|
printf ("%02x%02x ", a, b);
|
|
}
|
|
printf ("\n");
|
|
}
|
|
for (i = 0; i < remainder / 2; i++) {
|
|
byte a, b;
|
|
|
|
a = *(buf++);
|
|
b = *(buf++);
|
|
printf ("%02x%02x ", a, b);
|
|
}
|
|
printf ("\n");
|
|
#endif /* 0 */
|
|
}
|
|
#endif /* SMC_DEBUG > 2 */
|
|
|
|
int eth_init (bd_t * bd)
|
|
{
|
|
return (smc_open(bd));
|
|
}
|
|
|
|
void eth_halt ()
|
|
{
|
|
smc_close ();
|
|
}
|
|
|
|
int eth_rx ()
|
|
{
|
|
return smc_rcv ();
|
|
}
|
|
|
|
int eth_send (volatile void *packet, int length)
|
|
{
|
|
return smc_send_packet (packet, length);
|
|
}
|
|
|
|
|
|
#if 0
|
|
/*-------------------------------------------------------------------------
|
|
* smc_hw_init()
|
|
*
|
|
* Function:
|
|
* Reset and enable the device, check if the I/O space location
|
|
* is correct
|
|
*
|
|
* Input parameters:
|
|
* None
|
|
*
|
|
* Output:
|
|
* 0 --> success
|
|
* 1 --> error
|
|
*--------------------------------------------------------------------------
|
|
*/
|
|
static int smc_hw_init ()
|
|
{
|
|
unsigned short status_test;
|
|
|
|
/* The attribute register of the LAN91C96 is located at address
|
|
0x0e000000 on the lubbock platform */
|
|
volatile unsigned *attaddr = (unsigned *) (0x0e000000);
|
|
|
|
/* first reset, then enable the device. Sequence is critical */
|
|
attaddr[LAN91C96_ECOR] |= LAN91C96_ECOR_SRESET;
|
|
udelay (100);
|
|
attaddr[LAN91C96_ECOR] &= ~LAN91C96_ECOR_SRESET;
|
|
attaddr[LAN91C96_ECOR] |= LAN91C96_ECOR_ENABLE;
|
|
|
|
/* force 16-bit mode */
|
|
attaddr[LAN91C96_ECSR] &= ~LAN91C96_ECSR_IOIS8;
|
|
udelay (100);
|
|
|
|
/* check if the I/O address is correct, the upper byte of the
|
|
bank select register should read 0x33 */
|
|
|
|
status_test = SMC_inw (LAN91C96_BANK_SELECT);
|
|
if ((status_test & 0xFF00) != 0x3300) {
|
|
printf ("Failed to initialize ethernetchip\n");
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
#endif /* 0 */
|
|
|
|
/* smc_get_ethaddr (bd_t * bd)
|
|
*
|
|
* This checks both the environment and the ROM for an ethernet address. If
|
|
* found, the environment takes precedence.
|
|
*/
|
|
|
|
int smc_get_ethaddr (bd_t * bd)
|
|
{
|
|
uchar v_mac[6];
|
|
|
|
if (!eth_getenv_enetaddr("ethaddr", v_mac)) {
|
|
/* get ROM mac value if any */
|
|
if (!get_rom_mac(v_mac)) {
|
|
printf("\n*** ERROR: ethaddr is NOT set !!\n");
|
|
return -1;
|
|
}
|
|
eth_setenv_enetaddr("ethaddr", v_mac);
|
|
}
|
|
|
|
smc_set_mac_addr(v_mac); /* use old function to update smc default */
|
|
PRINTK("Using MAC Address %pM\n", v_mac);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* get_rom_mac()
|
|
* Note, this has omly been tested for the OMAP730 P2.
|
|
*/
|
|
|
|
int get_rom_mac (unsigned char *v_rom_mac)
|
|
{
|
|
#ifdef HARDCODE_MAC /* used for testing or to supress run time warnings */
|
|
char hw_mac_addr[] = { 0x02, 0x80, 0xad, 0x20, 0x31, 0xb8 };
|
|
|
|
memcpy (v_rom_mac, hw_mac_addr, 6);
|
|
return (1);
|
|
#else
|
|
int i;
|
|
SMC_SELECT_BANK (1);
|
|
for (i=0; i<6; i++)
|
|
{
|
|
v_rom_mac[i] = SMC_inb (LAN91C96_IA0 + i);
|
|
}
|
|
return (1);
|
|
#endif
|
|
}
|