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@@ -1,2066 +0,0 @@
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-/*-
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- * Copyright (C) 1994 by PJD Weichmann & SWS Bern, Switzerland
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- *
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- * This software may be used and distributed according to the terms
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- * of the GNU General Public License, incorporated herein by reference.
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- *
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- * Module : sk_g16.c
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- *
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- * Version : $Revision: 1.1 $
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- *
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- * Author : Patrick J.D. Weichmann
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- *
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- * Date Created : 94/05/26
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- * Last Updated : $Date: 1994/06/30 16:25:15 $
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- *
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- * Description : Schneider & Koch G16 Ethernet Device Driver for
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- * Linux Kernel >= 1.1.22
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- * Update History :
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- * Paul Gortmaker, 03/97: Fix for v2.1.x to use read{b,w}
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- * write{b,w} and memcpy -> memcpy_{to,from}io
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- *
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- * Jeff Garzik, 06/2000, Modularize
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- *
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--*/
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-
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-static const char rcsid[] = "$Id: sk_g16.c,v 1.1 1994/06/30 16:25:15 root Exp $";
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-
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-/*
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- * The Schneider & Koch (SK) G16 Network device driver is based
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- * on the 'ni6510' driver from Michael Hipp which can be found at
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- * ftp://sunsite.unc.edu/pub/Linux/system/Network/drivers/nidrivers.tar.gz
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- *
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- * Sources: 1) ni6510.c by M. Hipp
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- * 2) depca.c by D.C. Davies
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- * 3) skeleton.c by D. Becker
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- * 4) Am7990 Local Area Network Controller for Ethernet (LANCE),
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- * AMD, Pub. #05698, June 1989
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- *
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- * Many Thanks for helping me to get things working to:
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- *
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- * A. Cox (A.Cox@swansea.ac.uk)
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- * M. Hipp (mhipp@student.uni-tuebingen.de)
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- * R. Bolz (Schneider & Koch, Germany)
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- *
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- * To Do:
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- * - Support of SK_G8 and other SK Network Cards.
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- * - Autoset memory mapped RAM. Check for free memory and then
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- * configure RAM correctly.
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- * - SK_close should really set card in to initial state.
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- * - Test if IRQ 3 is not switched off. Use autoirq() functionality.
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- * (as in /drivers/net/skeleton.c)
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- * - Implement Multicast addressing. At minimum something like
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- * in depca.c.
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- * - Redo the statistics part.
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- * - Try to find out if the board is in 8 Bit or 16 Bit slot.
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- * If in 8 Bit mode don't use IRQ 11.
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- * - (Try to make it slightly faster.)
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- * - Power management support
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- */
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-
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-#include <linux/module.h>
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-#include <linux/kernel.h>
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-#include <linux/fcntl.h>
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-#include <linux/ioport.h>
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-#include <linux/interrupt.h>
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-#include <linux/slab.h>
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-#include <linux/string.h>
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-#include <linux/delay.h>
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-#include <linux/errno.h>
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-#include <linux/init.h>
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-#include <linux/spinlock.h>
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-#include <linux/netdevice.h>
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-#include <linux/etherdevice.h>
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-#include <linux/skbuff.h>
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-#include <linux/bitops.h>
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-
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-#include <asm/system.h>
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-#include <asm/io.h>
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-
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-#include "sk_g16.h"
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-
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-/*
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- * Schneider & Koch Card Definitions
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- * =================================
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- */
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-
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-#define SK_NAME "SK_G16"
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-
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-/*
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- * SK_G16 Configuration
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- * --------------------
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- */
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-
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-/*
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- * Abbreviations
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- * -------------
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- *
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- * RAM - used for the 16KB shared memory
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- * Boot_ROM, ROM - are used for referencing the BootEPROM
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- *
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- * SK_BOOT_ROM and SK_ADDR are symbolic constants used to configure
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- * the behaviour of the driver and the SK_G16.
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- *
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- * ! See sk_g16.install on how to install and configure the driver !
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- *
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- * SK_BOOT_ROM defines if the Boot_ROM should be switched off or not.
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- *
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- * SK_ADDR defines the address where the RAM will be mapped into the real
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- * host memory.
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- * valid addresses are from 0xa0000 to 0xfc000 in 16Kbyte steps.
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- */
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-
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-#define SK_BOOT_ROM 1 /* 1=BootROM on 0=off */
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-
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-#define SK_ADDR 0xcc000
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-
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-/*
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- * In POS3 are bits A14-A19 of the address bus. These bits can be set
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- * to choose the RAM address. That's why we only can choose the RAM address
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- * in 16KB steps.
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- */
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-
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-#define POS_ADDR (rom_addr>>14) /* Do not change this line */
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-
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-/*
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- * SK_G16 I/O PORT's + IRQ's + Boot_ROM locations
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- * ----------------------------------------------
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- */
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-
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-/*
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- * As nearly every card has also SK_G16 a specified I/O Port region and
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- * only a few possible IRQ's.
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- * In the Installation Guide from Schneider & Koch is listed a possible
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- * Interrupt IRQ2. IRQ2 is always IRQ9 in boards with two cascaded interrupt
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- * controllers. So we use in SK_IRQS IRQ9.
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- */
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-
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-/* Don't touch any of the following #defines. */
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-
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-#define SK_IO_PORTS { 0x100, 0x180, 0x208, 0x220, 0x288, 0x320, 0x328, 0x390, 0 }
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-
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-#define SK_IRQS { 3, 5, 9, 11, 0 }
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-
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-#define SK_BOOT_ROM_LOCATIONS { 0xc0000, 0xc4000, 0xc8000, 0xcc000, 0xd0000, 0xd4000, 0xd8000, 0xdc000, 0 }
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-
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-#define SK_BOOT_ROM_ID { 0x55, 0xaa, 0x10, 0x50, 0x06, 0x33 }
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-
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-/*
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- * SK_G16 POS REGISTERS
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- * --------------------
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- */
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-
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-/*
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- * SK_G16 has a Programmable Option Select (POS) Register.
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- * The POS is composed of 8 separate registers (POS0-7) which
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- * are I/O mapped on an address set by the W1 switch.
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- *
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- */
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-
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-#define SK_POS_SIZE 8 /* 8 I/O Ports are used by SK_G16 */
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-
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-#define SK_POS0 ioaddr /* Card-ID Low (R) */
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-#define SK_POS1 ioaddr+1 /* Card-ID High (R) */
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-#define SK_POS2 ioaddr+2 /* Card-Enable, Boot-ROM Disable (RW) */
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-#define SK_POS3 ioaddr+3 /* Base address of RAM */
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-#define SK_POS4 ioaddr+4 /* IRQ */
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-
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-/* POS5 - POS7 are unused */
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-
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-/*
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- * SK_G16 MAC PREFIX
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- * -----------------
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- */
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-
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-/*
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- * Scheider & Koch manufacturer code (00:00:a5).
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- * This must be checked, that we are sure it is a SK card.
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- */
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-
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-#define SK_MAC0 0x00
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-#define SK_MAC1 0x00
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-#define SK_MAC2 0x5a
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-
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-/*
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- * SK_G16 ID
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- * ---------
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- */
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-
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-/*
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- * If POS0,POS1 contain the following ID, then we know
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- * at which I/O Port Address we are.
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- */
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-
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-#define SK_IDLOW 0xfd
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-#define SK_IDHIGH 0x6a
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-
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-
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-/*
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- * LANCE POS Bit definitions
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- * -------------------------
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- */
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-
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-#define SK_ROM_RAM_ON (POS2_CARD)
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-#define SK_ROM_RAM_OFF (POS2_EPROM)
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-#define SK_ROM_ON (inb(SK_POS2) & POS2_CARD)
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-#define SK_ROM_OFF (inb(SK_POS2) | POS2_EPROM)
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-#define SK_RAM_ON (inb(SK_POS2) | POS2_CARD)
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-#define SK_RAM_OFF (inb(SK_POS2) & POS2_EPROM)
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-
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-#define POS2_CARD 0x0001 /* 1 = SK_G16 on 0 = off */
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-#define POS2_EPROM 0x0002 /* 1 = Boot EPROM off 0 = on */
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-
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-/*
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- * SK_G16 Memory mapped Registers
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- * ------------------------------
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- *
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- */
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-
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-#define SK_IOREG (&board->ioreg) /* LANCE data registers. */
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-#define SK_PORT (&board->port) /* Control, Status register */
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-#define SK_IOCOM (&board->iocom) /* I/O Command */
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-
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-/*
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- * SK_G16 Status/Control Register bits
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- * -----------------------------------
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- *
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- * (C) Controlreg (S) Statusreg
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- */
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-
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-/*
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- * Register transfer: 0 = no transfer
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- * 1 = transferring data between LANCE and I/O reg
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- */
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-#define SK_IORUN 0x20
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-
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-/*
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- * LANCE interrupt: 0 = LANCE interrupt occurred
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- * 1 = no LANCE interrupt occurred
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- */
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-#define SK_IRQ 0x10
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-
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-#define SK_RESET 0x08 /* Reset SK_CARD: 0 = RESET 1 = normal */
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-#define SK_RW 0x02 /* 0 = write to 1 = read from */
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-#define SK_ADR 0x01 /* 0 = REG DataPort 1 = RAP Reg addr port */
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-
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-
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-#define SK_RREG SK_RW /* Transferdirection to read from lance */
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-#define SK_WREG 0 /* Transferdirection to write to lance */
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-#define SK_RAP SK_ADR /* Destination Register RAP */
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-#define SK_RDATA 0 /* Destination Register REG DataPort */
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-
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-/*
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- * SK_G16 I/O Command
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- * ------------------
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- */
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-
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-/*
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- * Any bitcombination sets the internal I/O bit (transfer will start)
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- * when written to I/O Command
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- */
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-
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-#define SK_DOIO 0x80 /* Do Transfer */
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-
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-/*
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- * LANCE RAP (Register Address Port).
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- * ---------------------------------
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- */
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-
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-/*
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- * The LANCE internal registers are selected through the RAP.
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- * The Registers are:
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- *
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- * CSR0 - Status and Control flags
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- * CSR1 - Low order bits of initialize block (bits 15:00)
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- * CSR2 - High order bits of initialize block (bits 07:00, 15:08 are reserved)
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- * CSR3 - Allows redefinition of the Bus Master Interface.
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- * This register must be set to 0x0002, which means BSWAP = 0,
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- * ACON = 1, BCON = 0;
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- *
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- */
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-
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-#define CSR0 0x00
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-#define CSR1 0x01
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-#define CSR2 0x02
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-#define CSR3 0x03
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-
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-/*
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- * General Definitions
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- * ===================
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- */
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-
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-/*
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- * Set the number of Tx and Rx buffers, using Log_2(# buffers).
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- * We have 16KB RAM which can be accessed by the LANCE. In the
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- * memory are not only the buffers but also the ring descriptors and
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- * the initialize block.
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- * Don't change anything unless you really know what you do.
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- */
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-
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-#define LC_LOG_TX_BUFFERS 1 /* (2 == 2^^1) 2 Transmit buffers */
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-#define LC_LOG_RX_BUFFERS 3 /* (8 == 2^^3) 8 Receive buffers */
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-
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-/* Descriptor ring sizes */
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-
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-#define TMDNUM (1 << (LC_LOG_TX_BUFFERS)) /* 2 Transmit descriptor rings */
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-#define RMDNUM (1 << (LC_LOG_RX_BUFFERS)) /* 8 Receive Buffers */
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-
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-/* Define Mask for setting RMD, TMD length in the LANCE init_block */
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-
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-#define TMDNUMMASK (LC_LOG_TX_BUFFERS << 29)
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-#define RMDNUMMASK (LC_LOG_RX_BUFFERS << 29)
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-
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-/*
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- * Data Buffer size is set to maximum packet length.
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- */
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-
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-#define PKT_BUF_SZ 1518
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-
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-/*
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- * The number of low I/O ports used by the ethercard.
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- */
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-
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-#define ETHERCARD_TOTAL_SIZE SK_POS_SIZE
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-
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-/*
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- * SK_DEBUG
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- *
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- * Here you can choose what level of debugging wanted.
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- *
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- * If SK_DEBUG and SK_DEBUG2 are undefined, then only the
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- * necessary messages will be printed.
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- *
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- * If SK_DEBUG is defined, there will be many debugging prints
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- * which can help to find some mistakes in configuration or even
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- * in the driver code.
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- *
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- * If SK_DEBUG2 is defined, many many messages will be printed
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- * which normally you don't need. I used this to check the interrupt
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- * routine.
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- *
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- * (If you define only SK_DEBUG2 then only the messages for
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- * checking interrupts will be printed!)
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- *
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- * Normal way of live is:
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- *
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- * For the whole thing get going let both symbolic constants
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- * undefined. If you face any problems and you know what's going
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- * on (you know something about the card and you can interpret some
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- * hex LANCE register output) then define SK_DEBUG
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- *
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- */
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-
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-#undef SK_DEBUG /* debugging */
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-#undef SK_DEBUG2 /* debugging with more verbose report */
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-
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-#ifdef SK_DEBUG
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-#define PRINTK(x) printk x
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-#else
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-#define PRINTK(x) /**/
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-#endif
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-
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-#ifdef SK_DEBUG2
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-#define PRINTK2(x) printk x
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-#else
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-#define PRINTK2(x) /**/
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-#endif
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-
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-/*
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- * SK_G16 RAM
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- *
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- * The components are memory mapped and can be set in a region from
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- * 0x00000 through 0xfc000 in 16KB steps.
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- *
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- * The Network components are: dual ported RAM, Prom, I/O Reg, Status-,
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- * Controlregister and I/O Command.
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- *
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- * dual ported RAM: This is the only memory region which the LANCE chip
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- * has access to. From the Lance it is addressed from 0x0000 to
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- * 0x3fbf. The host accesses it normally.
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- *
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- * PROM: The PROM obtains the ETHERNET-MAC-Address. It is realised as a
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- * 8-Bit PROM, this means only the 16 even addresses are used of the
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- * 32 Byte Address region. Access to an odd address results in invalid
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- * data.
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- *
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- * LANCE I/O Reg: The I/O Reg is build of 4 single Registers, Low-Byte Write,
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- * Hi-Byte Write, Low-Byte Read, Hi-Byte Read.
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- * Transfer from or to the LANCE is always in 16Bit so Low and High
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- * registers are always relevant.
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- *
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- * The Data from the Readregister is not the data in the Writeregister!!
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- *
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- * Port: Status- and Controlregister.
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- * Two different registers which share the same address, Status is
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- * read-only, Control is write-only.
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- *
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- * I/O Command:
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- * Any bitcombination written in here starts the transmission between
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- * Host and LANCE.
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- */
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-
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-typedef struct
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-{
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- unsigned char ram[0x3fc0]; /* 16KB dual ported ram */
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- unsigned char rom[0x0020]; /* 32Byte PROM containing 6Byte MAC */
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- unsigned char res1[0x0010]; /* reserved */
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- unsigned volatile short ioreg;/* LANCE I/O Register */
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- unsigned volatile char port; /* Statusregister and Controlregister */
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- unsigned char iocom; /* I/O Command Register */
|
|
|
-} SK_RAM;
|
|
|
-
|
|
|
-/* struct */
|
|
|
-
|
|
|
-/*
|
|
|
- * This is the structure for the dual ported ram. We
|
|
|
- * have exactly 16 320 Bytes. In here there must be:
|
|
|
- *
|
|
|
- * - Initialize Block (starting at a word boundary)
|
|
|
- * - Receive and Transmit Descriptor Rings (quadword boundary)
|
|
|
- * - Data Buffers (arbitrary boundary)
|
|
|
- *
|
|
|
- * This is because LANCE has on SK_G16 only access to the dual ported
|
|
|
- * RAM and nowhere else.
|
|
|
- */
|
|
|
-
|
|
|
-struct SK_ram
|
|
|
-{
|
|
|
- struct init_block ib;
|
|
|
- struct tmd tmde[TMDNUM];
|
|
|
- struct rmd rmde[RMDNUM];
|
|
|
- char tmdbuf[TMDNUM][PKT_BUF_SZ];
|
|
|
- char rmdbuf[RMDNUM][PKT_BUF_SZ];
|
|
|
-};
|
|
|
-
|
|
|
-/*
|
|
|
- * Structure where all necessary information is for ring buffer
|
|
|
- * management and statistics.
|
|
|
- */
|
|
|
-
|
|
|
-struct priv
|
|
|
-{
|
|
|
- struct SK_ram *ram; /* dual ported ram structure */
|
|
|
- struct rmd *rmdhead; /* start of receive ring descriptors */
|
|
|
- struct tmd *tmdhead; /* start of transmit ring descriptors */
|
|
|
- int rmdnum; /* actual used ring descriptor */
|
|
|
- int tmdnum; /* actual transmit descriptor for transmitting data */
|
|
|
- int tmdlast; /* last sent descriptor used for error handling, etc */
|
|
|
- void *rmdbufs[RMDNUM]; /* pointer to the receive buffers */
|
|
|
- void *tmdbufs[TMDNUM]; /* pointer to the transmit buffers */
|
|
|
- struct net_device_stats stats; /* Device driver statistics */
|
|
|
-};
|
|
|
-
|
|
|
-/* global variable declaration */
|
|
|
-
|
|
|
-/* IRQ map used to reserve a IRQ (see SK_open()) */
|
|
|
-
|
|
|
-/* static variables */
|
|
|
-
|
|
|
-static SK_RAM *board; /* pointer to our memory mapped board components */
|
|
|
-static DEFINE_SPINLOCK(SK_lock);
|
|
|
-
|
|
|
-/* Macros */
|
|
|
-
|
|
|
-
|
|
|
-/* Function Prototypes */
|
|
|
-
|
|
|
-/*
|
|
|
- * Device Driver functions
|
|
|
- * -----------------------
|
|
|
- * See for short explanation of each function its definitions header.
|
|
|
- */
|
|
|
-
|
|
|
-static int SK_probe(struct net_device *dev, short ioaddr);
|
|
|
-
|
|
|
-static void SK_timeout(struct net_device *dev);
|
|
|
-static int SK_open(struct net_device *dev);
|
|
|
-static int SK_send_packet(struct sk_buff *skb, struct net_device *dev);
|
|
|
-static irqreturn_t SK_interrupt(int irq, void *dev_id, struct pt_regs * regs);
|
|
|
-static void SK_rxintr(struct net_device *dev);
|
|
|
-static void SK_txintr(struct net_device *dev);
|
|
|
-static int SK_close(struct net_device *dev);
|
|
|
-
|
|
|
-static struct net_device_stats *SK_get_stats(struct net_device *dev);
|
|
|
-
|
|
|
-unsigned int SK_rom_addr(void);
|
|
|
-
|
|
|
-static void set_multicast_list(struct net_device *dev);
|
|
|
-
|
|
|
-/*
|
|
|
- * LANCE Functions
|
|
|
- * ---------------
|
|
|
- */
|
|
|
-
|
|
|
-static int SK_lance_init(struct net_device *dev, unsigned short mode);
|
|
|
-void SK_reset_board(void);
|
|
|
-void SK_set_RAP(int reg_number);
|
|
|
-int SK_read_reg(int reg_number);
|
|
|
-int SK_rread_reg(void);
|
|
|
-void SK_write_reg(int reg_number, int value);
|
|
|
-
|
|
|
-/*
|
|
|
- * Debugging functions
|
|
|
- * -------------------
|
|
|
- */
|
|
|
-
|
|
|
-void SK_print_pos(struct net_device *dev, char *text);
|
|
|
-void SK_print_dev(struct net_device *dev, char *text);
|
|
|
-void SK_print_ram(struct net_device *dev);
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_init
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/05/26
|
|
|
- *
|
|
|
- * Description : Check for a SK_G16 network adaptor and initialize it.
|
|
|
- * This function gets called by dev_init which initializes
|
|
|
- * all Network devices.
|
|
|
- *
|
|
|
- * Parameters : I : struct net_device *dev - structure preconfigured
|
|
|
- * from Space.c
|
|
|
- * Return Value : 0 = Driver Found and initialized
|
|
|
- * Errors : ENODEV - no device found
|
|
|
- * ENXIO - not probed
|
|
|
- * Globals : None
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-static int io; /* 0 == probe */
|
|
|
-
|
|
|
-/*
|
|
|
- * Check for a network adaptor of this type, and return '0' if one exists.
|
|
|
- * If dev->base_addr == 0, probe all likely locations.
|
|
|
- * If dev->base_addr == 1, always return failure.
|
|
|
- */
|
|
|
-
|
|
|
-struct net_device * __init SK_init(int unit)
|
|
|
-{
|
|
|
- int *port, ports[] = SK_IO_PORTS; /* SK_G16 supported ports */
|
|
|
- static unsigned version_printed;
|
|
|
- struct net_device *dev = alloc_etherdev(sizeof(struct priv));
|
|
|
- int err = -ENODEV;
|
|
|
-
|
|
|
- if (!dev)
|
|
|
- return ERR_PTR(-ENOMEM);
|
|
|
-
|
|
|
- if (unit >= 0) {
|
|
|
- sprintf(dev->name, "eth%d", unit);
|
|
|
- netdev_boot_setup_check(dev);
|
|
|
- io = dev->base_addr;
|
|
|
- }
|
|
|
-
|
|
|
- if (version_printed++ == 0)
|
|
|
- PRINTK(("%s: %s", SK_NAME, rcsid));
|
|
|
-
|
|
|
- if (io > 0xff) { /* Check a single specified address */
|
|
|
- err = -EBUSY;
|
|
|
- /* Check if on specified address is a SK_G16 */
|
|
|
- if (request_region(io, ETHERCARD_TOTAL_SIZE, "sk_g16")) {
|
|
|
- err = SK_probe(dev, io);
|
|
|
- if (!err)
|
|
|
- goto got_it;
|
|
|
- release_region(io, ETHERCARD_TOTAL_SIZE);
|
|
|
- }
|
|
|
- } else if (io > 0) { /* Don't probe at all */
|
|
|
- err = -ENXIO;
|
|
|
- } else {
|
|
|
- /* Autoprobe base_addr */
|
|
|
- for (port = &ports[0]; *port; port++) {
|
|
|
- io = *port;
|
|
|
-
|
|
|
- /* Check if I/O Port region is used by another board */
|
|
|
- if (!request_region(io, ETHERCARD_TOTAL_SIZE, "sk_g16"))
|
|
|
- continue; /* Try next Port address */
|
|
|
-
|
|
|
- /* Check if at ioaddr is a SK_G16 */
|
|
|
- if (SK_probe(dev, io) == 0)
|
|
|
- goto got_it;
|
|
|
-
|
|
|
- release_region(io, ETHERCARD_TOTAL_SIZE);
|
|
|
- }
|
|
|
- }
|
|
|
-err_out:
|
|
|
- free_netdev(dev);
|
|
|
- return ERR_PTR(err);
|
|
|
-
|
|
|
-got_it:
|
|
|
- err = register_netdev(dev);
|
|
|
- if (err) {
|
|
|
- release_region(dev->base_addr, ETHERCARD_TOTAL_SIZE);
|
|
|
- goto err_out;
|
|
|
- }
|
|
|
- return dev;
|
|
|
-
|
|
|
-} /* End of SK_init */
|
|
|
-
|
|
|
-
|
|
|
-MODULE_AUTHOR("Patrick J.D. Weichmann");
|
|
|
-MODULE_DESCRIPTION("Schneider & Koch G16 Ethernet Device Driver");
|
|
|
-MODULE_LICENSE("GPL");
|
|
|
-MODULE_PARM(io, "i");
|
|
|
-MODULE_PARM_DESC(io, "0 to probe common ports (unsafe), or the I/O base of the board");
|
|
|
-
|
|
|
-
|
|
|
-#ifdef MODULE
|
|
|
-
|
|
|
-static struct net_device *SK_dev;
|
|
|
-
|
|
|
-static int __init SK_init_module (void)
|
|
|
-{
|
|
|
- SK_dev = SK_init(-1);
|
|
|
- return IS_ERR(SK_dev) ? PTR_ERR(SK_dev) : 0;
|
|
|
-}
|
|
|
-
|
|
|
-static void __exit SK_cleanup_module (void)
|
|
|
-{
|
|
|
- unregister_netdev(SK_dev);
|
|
|
- release_region(SK_dev->base_addr, ETHERCARD_TOTAL_SIZE);
|
|
|
- free_netdev(SK_dev);
|
|
|
-}
|
|
|
-
|
|
|
-module_init(SK_init_module);
|
|
|
-module_exit(SK_cleanup_module);
|
|
|
-#endif
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_probe
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/05/26
|
|
|
- *
|
|
|
- * Description : This function is called by SK_init and
|
|
|
- * does the main part of initialization.
|
|
|
- *
|
|
|
- * Parameters : I : struct net_device *dev - SK_G16 device structure
|
|
|
- * I : short ioaddr - I/O Port address where POS is.
|
|
|
- * Return Value : 0 = Initialization done
|
|
|
- * Errors : ENODEV - No SK_G16 found
|
|
|
- * -1 - Configuration problem
|
|
|
- * Globals : board - pointer to SK_RAM
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
- * 94/06/30 pwe SK_ADDR now checked and at the correct place
|
|
|
--*/
|
|
|
-
|
|
|
-int __init SK_probe(struct net_device *dev, short ioaddr)
|
|
|
-{
|
|
|
- int i,j; /* Counters */
|
|
|
- int sk_addr_flag = 0; /* SK ADDR correct? 1 - no, 0 - yes */
|
|
|
- unsigned int rom_addr; /* used to store RAM address used for POS_ADDR */
|
|
|
-
|
|
|
- struct priv *p = netdev_priv(dev); /* SK_G16 private structure */
|
|
|
-
|
|
|
- if (inb(SK_POS0) != SK_IDLOW || inb(SK_POS1) != SK_IDHIGH)
|
|
|
- return -ENODEV;
|
|
|
- dev->base_addr = ioaddr;
|
|
|
-
|
|
|
- if (SK_ADDR & 0x3fff || SK_ADDR < 0xa0000)
|
|
|
- {
|
|
|
-
|
|
|
- sk_addr_flag = 1;
|
|
|
-
|
|
|
- /*
|
|
|
- * Now here we could use a routine which searches for a free
|
|
|
- * place in the ram and set SK_ADDR if found. TODO.
|
|
|
- */
|
|
|
- }
|
|
|
-
|
|
|
- if (SK_BOOT_ROM) /* Shall we keep Boot_ROM on ? */
|
|
|
- {
|
|
|
- PRINTK(("## %s: SK_BOOT_ROM is set.\n", SK_NAME));
|
|
|
-
|
|
|
- rom_addr = SK_rom_addr();
|
|
|
-
|
|
|
- if (rom_addr == 0) /* No Boot_ROM found */
|
|
|
- {
|
|
|
- if (sk_addr_flag) /* No or Invalid SK_ADDR is defined */
|
|
|
- {
|
|
|
- printk("%s: SK_ADDR %#08x is not valid. Check configuration.\n",
|
|
|
- dev->name, SK_ADDR);
|
|
|
- return -1;
|
|
|
- }
|
|
|
-
|
|
|
- rom_addr = SK_ADDR; /* assign predefined address */
|
|
|
-
|
|
|
- PRINTK(("## %s: NO Bootrom found \n", SK_NAME));
|
|
|
-
|
|
|
- outb(SK_ROM_RAM_OFF, SK_POS2); /* Boot_ROM + RAM off */
|
|
|
- outb(POS_ADDR, SK_POS3); /* Set RAM address */
|
|
|
- outb(SK_RAM_ON, SK_POS2); /* enable RAM */
|
|
|
- }
|
|
|
- else if (rom_addr == SK_ADDR)
|
|
|
- {
|
|
|
- printk("%s: RAM + ROM are set to the same address %#08x\n"
|
|
|
- " Check configuration. Now switching off Boot_ROM\n",
|
|
|
- SK_NAME, rom_addr);
|
|
|
-
|
|
|
- outb(SK_ROM_RAM_OFF, SK_POS2); /* Boot_ROM + RAM off*/
|
|
|
- outb(POS_ADDR, SK_POS3); /* Set RAM address */
|
|
|
- outb(SK_RAM_ON, SK_POS2); /* enable RAM */
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- PRINTK(("## %s: Found ROM at %#08x\n", SK_NAME, rom_addr));
|
|
|
- PRINTK(("## %s: Keeping Boot_ROM on\n", SK_NAME));
|
|
|
-
|
|
|
- if (sk_addr_flag) /* No or Invalid SK_ADDR is defined */
|
|
|
- {
|
|
|
- printk("%s: SK_ADDR %#08x is not valid. Check configuration.\n",
|
|
|
- dev->name, SK_ADDR);
|
|
|
- return -1;
|
|
|
- }
|
|
|
-
|
|
|
- rom_addr = SK_ADDR;
|
|
|
-
|
|
|
- outb(SK_ROM_RAM_OFF, SK_POS2); /* Boot_ROM + RAM off */
|
|
|
- outb(POS_ADDR, SK_POS3); /* Set RAM address */
|
|
|
- outb(SK_ROM_RAM_ON, SK_POS2); /* RAM on, BOOT_ROM on */
|
|
|
- }
|
|
|
- }
|
|
|
- else /* Don't keep Boot_ROM */
|
|
|
- {
|
|
|
- PRINTK(("## %s: SK_BOOT_ROM is not set.\n", SK_NAME));
|
|
|
-
|
|
|
- if (sk_addr_flag) /* No or Invalid SK_ADDR is defined */
|
|
|
- {
|
|
|
- printk("%s: SK_ADDR %#08x is not valid. Check configuration.\n",
|
|
|
- dev->name, SK_ADDR);
|
|
|
- return -1;
|
|
|
- }
|
|
|
-
|
|
|
- rom_addr = SK_rom_addr(); /* Try to find a Boot_ROM */
|
|
|
-
|
|
|
- /* IF we find a Boot_ROM disable it */
|
|
|
-
|
|
|
- outb(SK_ROM_RAM_OFF, SK_POS2); /* Boot_ROM + RAM off */
|
|
|
-
|
|
|
- /* We found a Boot_ROM and it's gone. Set RAM address on
|
|
|
- * Boot_ROM address.
|
|
|
- */
|
|
|
-
|
|
|
- if (rom_addr)
|
|
|
- {
|
|
|
- printk("%s: We found Boot_ROM at %#08x. Now setting RAM on"
|
|
|
- "that address\n", SK_NAME, rom_addr);
|
|
|
-
|
|
|
- outb(POS_ADDR, SK_POS3); /* Set RAM on Boot_ROM address */
|
|
|
- }
|
|
|
- else /* We did not find a Boot_ROM, use predefined SK_ADDR for ram */
|
|
|
- {
|
|
|
- if (sk_addr_flag) /* No or Invalid SK_ADDR is defined */
|
|
|
- {
|
|
|
- printk("%s: SK_ADDR %#08x is not valid. Check configuration.\n",
|
|
|
- dev->name, SK_ADDR);
|
|
|
- return -1;
|
|
|
- }
|
|
|
-
|
|
|
- rom_addr = SK_ADDR;
|
|
|
-
|
|
|
- outb(POS_ADDR, SK_POS3); /* Set RAM address */
|
|
|
- }
|
|
|
- outb(SK_RAM_ON, SK_POS2); /* enable RAM */
|
|
|
- }
|
|
|
-
|
|
|
-#ifdef SK_DEBUG
|
|
|
- SK_print_pos(dev, "POS registers after ROM, RAM config");
|
|
|
-#endif
|
|
|
-
|
|
|
- board = (SK_RAM *) isa_bus_to_virt(rom_addr);
|
|
|
-
|
|
|
- /* Read in station address */
|
|
|
- for (i = 0, j = 0; i < ETH_ALEN; i++, j+=2)
|
|
|
- {
|
|
|
- dev->dev_addr[i] = readb(board->rom+j);
|
|
|
- }
|
|
|
-
|
|
|
- /* Check for manufacturer code */
|
|
|
- if (!(dev->dev_addr[0] == SK_MAC0 &&
|
|
|
- dev->dev_addr[1] == SK_MAC1 &&
|
|
|
- dev->dev_addr[2] == SK_MAC2) )
|
|
|
- {
|
|
|
- PRINTK(("## %s: We did not find SK_G16 at RAM location.\n",
|
|
|
- SK_NAME));
|
|
|
- return -ENODEV; /* NO SK_G16 found */
|
|
|
- }
|
|
|
-
|
|
|
- printk("%s: %s found at %#3x, HW addr: %#04x:%02x:%02x:%02x:%02x:%02x\n",
|
|
|
- dev->name,
|
|
|
- "Schneider & Koch Netcard",
|
|
|
- (unsigned int) dev->base_addr,
|
|
|
- dev->dev_addr[0],
|
|
|
- dev->dev_addr[1],
|
|
|
- dev->dev_addr[2],
|
|
|
- dev->dev_addr[3],
|
|
|
- dev->dev_addr[4],
|
|
|
- dev->dev_addr[5]);
|
|
|
-
|
|
|
- memset((char *) dev->priv, 0, sizeof(struct priv)); /* clear memory */
|
|
|
-
|
|
|
- /* Assign our Device Driver functions */
|
|
|
-
|
|
|
- dev->open = SK_open;
|
|
|
- dev->stop = SK_close;
|
|
|
- dev->hard_start_xmit = SK_send_packet;
|
|
|
- dev->get_stats = SK_get_stats;
|
|
|
- dev->set_multicast_list = set_multicast_list;
|
|
|
- dev->tx_timeout = SK_timeout;
|
|
|
- dev->watchdog_timeo = HZ/7;
|
|
|
-
|
|
|
-
|
|
|
- dev->flags &= ~IFF_MULTICAST;
|
|
|
-
|
|
|
- /* Initialize private structure */
|
|
|
-
|
|
|
- p->ram = (struct SK_ram *) rom_addr; /* Set dual ported RAM addr */
|
|
|
- p->tmdhead = &(p->ram)->tmde[0]; /* Set TMD head */
|
|
|
- p->rmdhead = &(p->ram)->rmde[0]; /* Set RMD head */
|
|
|
-
|
|
|
- /* Initialize buffer pointers */
|
|
|
-
|
|
|
- for (i = 0; i < TMDNUM; i++)
|
|
|
- {
|
|
|
- p->tmdbufs[i] = &(p->ram)->tmdbuf[i];
|
|
|
- }
|
|
|
-
|
|
|
- for (i = 0; i < RMDNUM; i++)
|
|
|
- {
|
|
|
- p->rmdbufs[i] = &(p->ram)->rmdbuf[i];
|
|
|
- }
|
|
|
-
|
|
|
-#ifdef SK_DEBUG
|
|
|
- SK_print_pos(dev, "End of SK_probe");
|
|
|
- SK_print_ram(dev);
|
|
|
-#endif
|
|
|
- return 0; /* Initialization done */
|
|
|
-} /* End of SK_probe() */
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_open
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/05/26
|
|
|
- *
|
|
|
- * Description : This function is called sometimes after booting
|
|
|
- * when ifconfig program is run.
|
|
|
- *
|
|
|
- * This function requests an IRQ, sets the correct
|
|
|
- * IRQ in the card. Then calls SK_lance_init() to
|
|
|
- * init and start the LANCE chip. Then if everything is
|
|
|
- * ok returns with 0 (OK), which means SK_G16 is now
|
|
|
- * opened and operational.
|
|
|
- *
|
|
|
- * (Called by dev_open() /net/inet/dev.c)
|
|
|
- *
|
|
|
- * Parameters : I : struct net_device *dev - SK_G16 device structure
|
|
|
- * Return Value : 0 - Device opened
|
|
|
- * Errors : -EAGAIN - Open failed
|
|
|
- * Side Effects : None
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-static int SK_open(struct net_device *dev)
|
|
|
-{
|
|
|
- int i = 0;
|
|
|
- int irqval = 0;
|
|
|
- int ioaddr = dev->base_addr;
|
|
|
-
|
|
|
- int irqtab[] = SK_IRQS;
|
|
|
-
|
|
|
- struct priv *p = netdev_priv(dev);
|
|
|
-
|
|
|
- PRINTK(("## %s: At beginning of SK_open(). CSR0: %#06x\n",
|
|
|
- SK_NAME, SK_read_reg(CSR0)));
|
|
|
-
|
|
|
- if (dev->irq == 0) /* Autoirq */
|
|
|
- {
|
|
|
- i = 0;
|
|
|
-
|
|
|
- /*
|
|
|
- * Check if one IRQ out of SK_IRQS is free and install
|
|
|
- * interrupt handler.
|
|
|
- * Most done by request_irq().
|
|
|
- * irqval: 0 - interrupt handler installed for IRQ irqtab[i]
|
|
|
- * -EBUSY - interrupt busy
|
|
|
- * -EINVAL - irq > 15 or handler = NULL
|
|
|
- */
|
|
|
-
|
|
|
- do
|
|
|
- {
|
|
|
- irqval = request_irq(irqtab[i], &SK_interrupt, 0, "sk_g16", dev);
|
|
|
- i++;
|
|
|
- } while (irqval && irqtab[i]);
|
|
|
-
|
|
|
- if (irqval) /* We tried every possible IRQ but no success */
|
|
|
- {
|
|
|
- printk("%s: unable to get an IRQ\n", dev->name);
|
|
|
- return -EAGAIN;
|
|
|
- }
|
|
|
-
|
|
|
- dev->irq = irqtab[--i];
|
|
|
-
|
|
|
- outb(i<<2, SK_POS4); /* Set Card on probed IRQ */
|
|
|
-
|
|
|
- }
|
|
|
- else if (dev->irq == 2) /* IRQ2 is always IRQ9 */
|
|
|
- {
|
|
|
- if (request_irq(9, &SK_interrupt, 0, "sk_g16", dev))
|
|
|
- {
|
|
|
- printk("%s: unable to get IRQ 9\n", dev->name);
|
|
|
- return -EAGAIN;
|
|
|
- }
|
|
|
- dev->irq = 9;
|
|
|
-
|
|
|
- /*
|
|
|
- * Now we set card on IRQ2.
|
|
|
- * This can be confusing, but remember that IRQ2 on the network
|
|
|
- * card is in reality IRQ9
|
|
|
- */
|
|
|
- outb(0x08, SK_POS4); /* set card to IRQ2 */
|
|
|
-
|
|
|
- }
|
|
|
- else /* Check IRQ as defined in Space.c */
|
|
|
- {
|
|
|
- int i = 0;
|
|
|
-
|
|
|
- /* check if IRQ free and valid. Then install Interrupt handler */
|
|
|
-
|
|
|
- if (request_irq(dev->irq, &SK_interrupt, 0, "sk_g16", dev))
|
|
|
- {
|
|
|
- printk("%s: unable to get selected IRQ\n", dev->name);
|
|
|
- return -EAGAIN;
|
|
|
- }
|
|
|
-
|
|
|
- switch(dev->irq)
|
|
|
- {
|
|
|
- case 3: i = 0;
|
|
|
- break;
|
|
|
- case 5: i = 1;
|
|
|
- break;
|
|
|
- case 2: i = 2;
|
|
|
- break;
|
|
|
- case 11:i = 3;
|
|
|
- break;
|
|
|
- default:
|
|
|
- printk("%s: Preselected IRQ %d is invalid for %s boards",
|
|
|
- dev->name,
|
|
|
- dev->irq,
|
|
|
- SK_NAME);
|
|
|
- return -EAGAIN;
|
|
|
- }
|
|
|
-
|
|
|
- outb(i<<2, SK_POS4); /* Set IRQ on card */
|
|
|
- }
|
|
|
-
|
|
|
- printk("%s: Schneider & Koch G16 at %#3x, IRQ %d, shared mem at %#08x\n",
|
|
|
- dev->name, (unsigned int)dev->base_addr,
|
|
|
- (int) dev->irq, (unsigned int) p->ram);
|
|
|
-
|
|
|
- if (!(i = SK_lance_init(dev, 0))) /* LANCE init OK? */
|
|
|
- {
|
|
|
- netif_start_queue(dev);
|
|
|
-
|
|
|
-#ifdef SK_DEBUG
|
|
|
-
|
|
|
- /*
|
|
|
- * This debug block tries to stop LANCE,
|
|
|
- * reinit LANCE with transmitter and receiver disabled,
|
|
|
- * then stop again and reinit with NORMAL_MODE
|
|
|
- */
|
|
|
-
|
|
|
- printk("## %s: After lance init. CSR0: %#06x\n",
|
|
|
- SK_NAME, SK_read_reg(CSR0));
|
|
|
- SK_write_reg(CSR0, CSR0_STOP);
|
|
|
- printk("## %s: LANCE stopped. CSR0: %#06x\n",
|
|
|
- SK_NAME, SK_read_reg(CSR0));
|
|
|
- SK_lance_init(dev, MODE_DTX | MODE_DRX);
|
|
|
- printk("## %s: Reinit with DTX + DRX off. CSR0: %#06x\n",
|
|
|
- SK_NAME, SK_read_reg(CSR0));
|
|
|
- SK_write_reg(CSR0, CSR0_STOP);
|
|
|
- printk("## %s: LANCE stopped. CSR0: %#06x\n",
|
|
|
- SK_NAME, SK_read_reg(CSR0));
|
|
|
- SK_lance_init(dev, MODE_NORMAL);
|
|
|
- printk("## %s: LANCE back to normal mode. CSR0: %#06x\n",
|
|
|
- SK_NAME, SK_read_reg(CSR0));
|
|
|
- SK_print_pos(dev, "POS regs before returning OK");
|
|
|
-
|
|
|
-#endif /* SK_DEBUG */
|
|
|
-
|
|
|
- return 0; /* SK_open() is successful */
|
|
|
- }
|
|
|
- else /* LANCE init failed */
|
|
|
- {
|
|
|
-
|
|
|
- PRINTK(("## %s: LANCE init failed: CSR0: %#06x\n",
|
|
|
- SK_NAME, SK_read_reg(CSR0)));
|
|
|
-
|
|
|
- return -EAGAIN;
|
|
|
- }
|
|
|
-
|
|
|
-} /* End of SK_open() */
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_lance_init
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/05/26
|
|
|
- *
|
|
|
- * Description : Reset LANCE chip, fill RMD, TMD structures with
|
|
|
- * start values and Start LANCE.
|
|
|
- *
|
|
|
- * Parameters : I : struct net_device *dev - SK_G16 device structure
|
|
|
- * I : int mode - put LANCE into "mode" see data-sheet for
|
|
|
- * more info.
|
|
|
- * Return Value : 0 - Init done
|
|
|
- * Errors : -1 - Init failed
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-static int SK_lance_init(struct net_device *dev, unsigned short mode)
|
|
|
-{
|
|
|
- int i;
|
|
|
- unsigned long flags;
|
|
|
- struct priv *p = netdev_priv(dev);
|
|
|
- struct tmd *tmdp;
|
|
|
- struct rmd *rmdp;
|
|
|
-
|
|
|
- PRINTK(("## %s: At beginning of LANCE init. CSR0: %#06x\n",
|
|
|
- SK_NAME, SK_read_reg(CSR0)));
|
|
|
-
|
|
|
- /* Reset LANCE */
|
|
|
- SK_reset_board();
|
|
|
-
|
|
|
- /* Initialize TMD's with start values */
|
|
|
- p->tmdnum = 0; /* First descriptor for transmitting */
|
|
|
- p->tmdlast = 0; /* First descriptor for reading stats */
|
|
|
-
|
|
|
- for (i = 0; i < TMDNUM; i++) /* Init all TMD's */
|
|
|
- {
|
|
|
- tmdp = p->tmdhead + i;
|
|
|
-
|
|
|
- writel((unsigned long) p->tmdbufs[i], tmdp->u.buffer); /* assign buffer */
|
|
|
-
|
|
|
- /* Mark TMD as start and end of packet */
|
|
|
- writeb(TX_STP | TX_ENP, &tmdp->u.s.status);
|
|
|
- }
|
|
|
-
|
|
|
-
|
|
|
- /* Initialize RMD's with start values */
|
|
|
-
|
|
|
- p->rmdnum = 0; /* First RMD which will be used */
|
|
|
-
|
|
|
- for (i = 0; i < RMDNUM; i++) /* Init all RMD's */
|
|
|
- {
|
|
|
- rmdp = p->rmdhead + i;
|
|
|
-
|
|
|
-
|
|
|
- writel((unsigned long) p->rmdbufs[i], rmdp->u.buffer); /* assign buffer */
|
|
|
-
|
|
|
- /*
|
|
|
- * LANCE must be owner at beginning so that he can fill in
|
|
|
- * receiving packets, set status and release RMD
|
|
|
- */
|
|
|
-
|
|
|
- writeb(RX_OWN, &rmdp->u.s.status);
|
|
|
-
|
|
|
- writew(-PKT_BUF_SZ, &rmdp->blen); /* Buffer Size (two's complement) */
|
|
|
-
|
|
|
- writeb(0, &rmdp->mlen); /* init message length */
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- /* Fill LANCE Initialize Block */
|
|
|
-
|
|
|
- writew(mode, (&((p->ram)->ib.mode))); /* Set operation mode */
|
|
|
-
|
|
|
- for (i = 0; i < ETH_ALEN; i++) /* Set physical address */
|
|
|
- {
|
|
|
- writeb(dev->dev_addr[i], (&((p->ram)->ib.paddr[i])));
|
|
|
- }
|
|
|
-
|
|
|
- for (i = 0; i < 8; i++) /* Set multicast, logical address */
|
|
|
- {
|
|
|
- writeb(0, (&((p->ram)->ib.laddr[i]))); /* We do not use logical addressing */
|
|
|
- }
|
|
|
-
|
|
|
- /* Set ring descriptor pointers and set number of descriptors */
|
|
|
-
|
|
|
- writel((int)p->rmdhead | RMDNUMMASK, (&((p->ram)->ib.rdrp)));
|
|
|
- writel((int)p->tmdhead | TMDNUMMASK, (&((p->ram)->ib.tdrp)));
|
|
|
-
|
|
|
- /* Prepare LANCE Control and Status Registers */
|
|
|
-
|
|
|
- spin_lock_irqsave(&SK_lock, flags);
|
|
|
-
|
|
|
- SK_write_reg(CSR3, CSR3_ACON); /* Ale Control !!!THIS MUST BE SET!!!! */
|
|
|
-
|
|
|
- /*
|
|
|
- * LANCE addresses the RAM from 0x0000 to 0x3fbf and has no access to
|
|
|
- * PC Memory locations.
|
|
|
- *
|
|
|
- * In structure SK_ram is defined that the first thing in ram
|
|
|
- * is the initialization block. So his address is for LANCE always
|
|
|
- * 0x0000
|
|
|
- *
|
|
|
- * CSR1 contains low order bits 15:0 of initialization block address
|
|
|
- * CSR2 is built of:
|
|
|
- * 7:0 High order bits 23:16 of initialization block address
|
|
|
- * 15:8 reserved, must be 0
|
|
|
- */
|
|
|
-
|
|
|
- /* Set initialization block address (must be on word boundary) */
|
|
|
- SK_write_reg(CSR1, 0); /* Set low order bits 15:0 */
|
|
|
- SK_write_reg(CSR2, 0); /* Set high order bits 23:16 */
|
|
|
-
|
|
|
-
|
|
|
- PRINTK(("## %s: After setting CSR1-3. CSR0: %#06x\n",
|
|
|
- SK_NAME, SK_read_reg(CSR0)));
|
|
|
-
|
|
|
- /* Initialize LANCE */
|
|
|
-
|
|
|
- /*
|
|
|
- * INIT = Initialize, when set, causes the LANCE to begin the
|
|
|
- * initialization procedure and access the Init Block.
|
|
|
- */
|
|
|
-
|
|
|
- SK_write_reg(CSR0, CSR0_INIT);
|
|
|
-
|
|
|
- spin_unlock_irqrestore(&SK_lock, flags);
|
|
|
-
|
|
|
- /* Wait until LANCE finished initialization */
|
|
|
-
|
|
|
- SK_set_RAP(CSR0); /* Register Address Pointer to CSR0 */
|
|
|
-
|
|
|
- for (i = 0; (i < 100) && !(SK_rread_reg() & CSR0_IDON); i++)
|
|
|
- ; /* Wait until init done or go ahead if problems (i>=100) */
|
|
|
-
|
|
|
- if (i >= 100) /* Something is wrong ! */
|
|
|
- {
|
|
|
- printk("%s: can't init am7990, status: %04x "
|
|
|
- "init_block: %#08x\n",
|
|
|
- dev->name, (int) SK_read_reg(CSR0),
|
|
|
- (unsigned int) &(p->ram)->ib);
|
|
|
-
|
|
|
-#ifdef SK_DEBUG
|
|
|
- SK_print_pos(dev, "LANCE INIT failed");
|
|
|
- SK_print_dev(dev,"Device Structure:");
|
|
|
-#endif
|
|
|
-
|
|
|
- return -1; /* LANCE init failed */
|
|
|
- }
|
|
|
-
|
|
|
- PRINTK(("## %s: init done after %d ticks\n", SK_NAME, i));
|
|
|
-
|
|
|
- /* Clear Initialize done, enable Interrupts, start LANCE */
|
|
|
-
|
|
|
- SK_write_reg(CSR0, CSR0_IDON | CSR0_INEA | CSR0_STRT);
|
|
|
-
|
|
|
- PRINTK(("## %s: LANCE started. CSR0: %#06x\n", SK_NAME,
|
|
|
- SK_read_reg(CSR0)));
|
|
|
-
|
|
|
- return 0; /* LANCE is up and running */
|
|
|
-
|
|
|
-} /* End of SK_lance_init() */
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_send_packet
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/05/27
|
|
|
- *
|
|
|
- * Description : Writes an socket buffer into a transmit descriptor
|
|
|
- * and starts transmission.
|
|
|
- *
|
|
|
- * Parameters : I : struct sk_buff *skb - packet to transfer
|
|
|
- * I : struct net_device *dev - SK_G16 device structure
|
|
|
- * Return Value : 0 - OK
|
|
|
- * 1 - Could not transmit (dev_queue_xmit will queue it)
|
|
|
- * and try to sent it later
|
|
|
- * Globals : None
|
|
|
- * Side Effects : None
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-static void SK_timeout(struct net_device *dev)
|
|
|
-{
|
|
|
- printk(KERN_WARNING "%s: xmitter timed out, try to restart!\n", dev->name);
|
|
|
- SK_lance_init(dev, MODE_NORMAL); /* Reinit LANCE */
|
|
|
- netif_wake_queue(dev); /* Clear Transmitter flag */
|
|
|
- dev->trans_start = jiffies; /* Mark Start of transmission */
|
|
|
-}
|
|
|
-
|
|
|
-static int SK_send_packet(struct sk_buff *skb, struct net_device *dev)
|
|
|
-{
|
|
|
- struct priv *p = netdev_priv(dev);
|
|
|
- struct tmd *tmdp;
|
|
|
- static char pad[64];
|
|
|
-
|
|
|
- PRINTK2(("## %s: SK_send_packet() called, CSR0 %#04x.\n",
|
|
|
- SK_NAME, SK_read_reg(CSR0)));
|
|
|
-
|
|
|
-
|
|
|
- /*
|
|
|
- * Block a timer-based transmit from overlapping.
|
|
|
- * This means check if we are already in.
|
|
|
- */
|
|
|
-
|
|
|
- netif_stop_queue (dev);
|
|
|
-
|
|
|
- {
|
|
|
-
|
|
|
- /* Evaluate Packet length */
|
|
|
- short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
|
|
|
-
|
|
|
- tmdp = p->tmdhead + p->tmdnum; /* Which descriptor for transmitting */
|
|
|
-
|
|
|
- /* Fill in Transmit Message Descriptor */
|
|
|
-
|
|
|
- /* Copy data into dual ported ram */
|
|
|
-
|
|
|
- memcpy_toio((tmdp->u.buffer & 0x00ffffff), skb->data, skb->len);
|
|
|
- if (len != skb->len)
|
|
|
- memcpy_toio((tmdp->u.buffer & 0x00ffffff) + skb->len, pad, len-skb->len);
|
|
|
-
|
|
|
- writew(-len, &tmdp->blen); /* set length to transmit */
|
|
|
-
|
|
|
- /*
|
|
|
- * Packet start and end is always set because we use the maximum
|
|
|
- * packet length as buffer length.
|
|
|
- * Relinquish ownership to LANCE
|
|
|
- */
|
|
|
-
|
|
|
- writeb(TX_OWN | TX_STP | TX_ENP, &tmdp->u.s.status);
|
|
|
-
|
|
|
- /* Start Demand Transmission */
|
|
|
- SK_write_reg(CSR0, CSR0_TDMD | CSR0_INEA);
|
|
|
-
|
|
|
- dev->trans_start = jiffies; /* Mark start of transmission */
|
|
|
-
|
|
|
- /* Set pointer to next transmit buffer */
|
|
|
- p->tmdnum++;
|
|
|
- p->tmdnum &= TMDNUM-1;
|
|
|
-
|
|
|
- /* Do we own the next transmit buffer ? */
|
|
|
- if (! (readb(&((p->tmdhead + p->tmdnum)->u.s.status)) & TX_OWN) )
|
|
|
- {
|
|
|
- /*
|
|
|
- * We own next buffer and are ready to transmit, so
|
|
|
- * clear busy flag
|
|
|
- */
|
|
|
- netif_start_queue(dev);
|
|
|
- }
|
|
|
-
|
|
|
- p->stats.tx_bytes += skb->len;
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- dev_kfree_skb(skb);
|
|
|
- return 0;
|
|
|
-} /* End of SK_send_packet */
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_interrupt
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/05/27
|
|
|
- *
|
|
|
- * Description : SK_G16 interrupt handler which checks for LANCE
|
|
|
- * Errors, handles transmit and receive interrupts
|
|
|
- *
|
|
|
- * Parameters : I : int irq, void *dev_id, struct pt_regs * regs -
|
|
|
- * Return Value : None
|
|
|
- * Errors : None
|
|
|
- * Globals : None
|
|
|
- * Side Effects : None
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-static irqreturn_t SK_interrupt(int irq, void *dev_id, struct pt_regs * regs)
|
|
|
-{
|
|
|
- int csr0;
|
|
|
- struct net_device *dev = dev_id;
|
|
|
- struct priv *p = netdev_priv(dev);
|
|
|
-
|
|
|
-
|
|
|
- PRINTK2(("## %s: SK_interrupt(). status: %#06x\n",
|
|
|
- SK_NAME, SK_read_reg(CSR0)));
|
|
|
-
|
|
|
- if (dev == NULL)
|
|
|
- {
|
|
|
- printk("SK_interrupt(): IRQ %d for unknown device.\n", irq);
|
|
|
- }
|
|
|
-
|
|
|
- spin_lock (&SK_lock);
|
|
|
-
|
|
|
- csr0 = SK_read_reg(CSR0); /* store register for checking */
|
|
|
-
|
|
|
- /*
|
|
|
- * Acknowledge all of the current interrupt sources, disable
|
|
|
- * Interrupts (INEA = 0)
|
|
|
- */
|
|
|
-
|
|
|
- SK_write_reg(CSR0, csr0 & CSR0_CLRALL);
|
|
|
-
|
|
|
- if (csr0 & CSR0_ERR) /* LANCE Error */
|
|
|
- {
|
|
|
- printk("%s: error: %04x\n", dev->name, csr0);
|
|
|
-
|
|
|
- if (csr0 & CSR0_MISS) /* No place to store packet ? */
|
|
|
- {
|
|
|
- p->stats.rx_dropped++;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if (csr0 & CSR0_RINT) /* Receive Interrupt (packet arrived) */
|
|
|
- {
|
|
|
- SK_rxintr(dev);
|
|
|
- }
|
|
|
-
|
|
|
- if (csr0 & CSR0_TINT) /* Transmit interrupt (packet sent) */
|
|
|
- {
|
|
|
- SK_txintr(dev);
|
|
|
- }
|
|
|
-
|
|
|
- SK_write_reg(CSR0, CSR0_INEA); /* Enable Interrupts */
|
|
|
-
|
|
|
- spin_unlock (&SK_lock);
|
|
|
- return IRQ_HANDLED;
|
|
|
-} /* End of SK_interrupt() */
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_txintr
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/05/27
|
|
|
- *
|
|
|
- * Description : After sending a packet we check status, update
|
|
|
- * statistics and relinquish ownership of transmit
|
|
|
- * descriptor ring.
|
|
|
- *
|
|
|
- * Parameters : I : struct net_device *dev - SK_G16 device structure
|
|
|
- * Return Value : None
|
|
|
- * Errors : None
|
|
|
- * Globals : None
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-static void SK_txintr(struct net_device *dev)
|
|
|
-{
|
|
|
- int tmdstat;
|
|
|
- struct tmd *tmdp;
|
|
|
- struct priv *p = netdev_priv(dev);
|
|
|
-
|
|
|
-
|
|
|
- PRINTK2(("## %s: SK_txintr() status: %#06x\n",
|
|
|
- SK_NAME, SK_read_reg(CSR0)));
|
|
|
-
|
|
|
- tmdp = p->tmdhead + p->tmdlast; /* Which buffer we sent at last ? */
|
|
|
-
|
|
|
- /* Set next buffer */
|
|
|
- p->tmdlast++;
|
|
|
- p->tmdlast &= TMDNUM-1;
|
|
|
-
|
|
|
- tmdstat = readb(&tmdp->u.s.status);
|
|
|
-
|
|
|
- /*
|
|
|
- * We check status of transmitted packet.
|
|
|
- * see LANCE data-sheet for error explanation
|
|
|
- */
|
|
|
- if (tmdstat & TX_ERR) /* Error occurred */
|
|
|
- {
|
|
|
- int stat2 = readw(&tmdp->status2);
|
|
|
-
|
|
|
- printk("%s: TX error: %04x %04x\n", dev->name, tmdstat, stat2);
|
|
|
-
|
|
|
- if (stat2 & TX_TDR) /* TDR problems? */
|
|
|
- {
|
|
|
- printk("%s: tdr-problems \n", dev->name);
|
|
|
- }
|
|
|
-
|
|
|
- if (stat2 & TX_RTRY) /* Failed in 16 attempts to transmit ? */
|
|
|
- p->stats.tx_aborted_errors++;
|
|
|
- if (stat2 & TX_LCOL) /* Late collision ? */
|
|
|
- p->stats.tx_window_errors++;
|
|
|
- if (stat2 & TX_LCAR) /* Loss of Carrier ? */
|
|
|
- p->stats.tx_carrier_errors++;
|
|
|
- if (stat2 & TX_UFLO) /* Underflow error ? */
|
|
|
- {
|
|
|
- p->stats.tx_fifo_errors++;
|
|
|
-
|
|
|
- /*
|
|
|
- * If UFLO error occurs it will turn transmitter of.
|
|
|
- * So we must reinit LANCE
|
|
|
- */
|
|
|
-
|
|
|
- SK_lance_init(dev, MODE_NORMAL);
|
|
|
- }
|
|
|
-
|
|
|
- p->stats.tx_errors++;
|
|
|
-
|
|
|
- writew(0, &tmdp->status2); /* Clear error flags */
|
|
|
- }
|
|
|
- else if (tmdstat & TX_MORE) /* Collisions occurred ? */
|
|
|
- {
|
|
|
- /*
|
|
|
- * Here I have a problem.
|
|
|
- * I only know that there must be one or up to 15 collisions.
|
|
|
- * That's why TX_MORE is set, because after 16 attempts TX_RTRY
|
|
|
- * will be set which means couldn't send packet aborted transfer.
|
|
|
- *
|
|
|
- * First I did not have this in but then I thought at minimum
|
|
|
- * we see that something was not ok.
|
|
|
- * If anyone knows something better than this to handle this
|
|
|
- * please report it.
|
|
|
- */
|
|
|
-
|
|
|
- p->stats.collisions++;
|
|
|
- }
|
|
|
- else /* Packet sent without any problems */
|
|
|
- {
|
|
|
- p->stats.tx_packets++;
|
|
|
- }
|
|
|
-
|
|
|
- /*
|
|
|
- * We mark transmitter not busy anymore, because now we have a free
|
|
|
- * transmit descriptor which can be filled by SK_send_packet and
|
|
|
- * afterwards sent by the LANCE
|
|
|
- *
|
|
|
- * The function which do handle slow IRQ parts is do_bottom_half()
|
|
|
- * which runs at normal kernel priority, that means all interrupt are
|
|
|
- * enabled. (see kernel/irq.c)
|
|
|
- *
|
|
|
- * net_bh does something like this:
|
|
|
- * - check if already in net_bh
|
|
|
- * - try to transmit something from the send queue
|
|
|
- * - if something is in the receive queue send it up to higher
|
|
|
- * levels if it is a known protocol
|
|
|
- * - try to transmit something from the send queue
|
|
|
- */
|
|
|
-
|
|
|
- netif_wake_queue(dev);
|
|
|
-
|
|
|
-} /* End of SK_txintr() */
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_rxintr
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/05/27
|
|
|
- *
|
|
|
- * Description : Buffer sent, check for errors, relinquish ownership
|
|
|
- * of the receive message descriptor.
|
|
|
- *
|
|
|
- * Parameters : I : SK_G16 device structure
|
|
|
- * Return Value : None
|
|
|
- * Globals : None
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-static void SK_rxintr(struct net_device *dev)
|
|
|
-{
|
|
|
-
|
|
|
- struct rmd *rmdp;
|
|
|
- int rmdstat;
|
|
|
- struct priv *p = netdev_priv(dev);
|
|
|
-
|
|
|
- PRINTK2(("## %s: SK_rxintr(). CSR0: %#06x\n",
|
|
|
- SK_NAME, SK_read_reg(CSR0)));
|
|
|
-
|
|
|
- rmdp = p->rmdhead + p->rmdnum;
|
|
|
-
|
|
|
- /* As long as we own the next entry, check status and send
|
|
|
- * it up to higher layer
|
|
|
- */
|
|
|
-
|
|
|
- while (!( (rmdstat = readb(&rmdp->u.s.status)) & RX_OWN))
|
|
|
- {
|
|
|
- /*
|
|
|
- * Start and end of packet must be set, because we use
|
|
|
- * the ethernet maximum packet length (1518) as buffer size.
|
|
|
- *
|
|
|
- * Because our buffers are at maximum OFLO and BUFF errors are
|
|
|
- * not to be concerned (see Data sheet)
|
|
|
- */
|
|
|
-
|
|
|
- if ((rmdstat & (RX_STP | RX_ENP)) != (RX_STP | RX_ENP))
|
|
|
- {
|
|
|
- /* Start of a frame > 1518 Bytes ? */
|
|
|
-
|
|
|
- if (rmdstat & RX_STP)
|
|
|
- {
|
|
|
- p->stats.rx_errors++; /* bad packet received */
|
|
|
- p->stats.rx_length_errors++; /* packet too long */
|
|
|
-
|
|
|
- printk("%s: packet too long\n", dev->name);
|
|
|
- }
|
|
|
-
|
|
|
- /*
|
|
|
- * All other packets will be ignored until a new frame with
|
|
|
- * start (RX_STP) set follows.
|
|
|
- *
|
|
|
- * What we do is just give descriptor free for new incoming
|
|
|
- * packets.
|
|
|
- */
|
|
|
-
|
|
|
- writeb(RX_OWN, &rmdp->u.s.status); /* Relinquish ownership to LANCE */
|
|
|
-
|
|
|
- }
|
|
|
- else if (rmdstat & RX_ERR) /* Receive Error ? */
|
|
|
- {
|
|
|
- printk("%s: RX error: %04x\n", dev->name, (int) rmdstat);
|
|
|
-
|
|
|
- p->stats.rx_errors++;
|
|
|
-
|
|
|
- if (rmdstat & RX_FRAM) p->stats.rx_frame_errors++;
|
|
|
- if (rmdstat & RX_CRC) p->stats.rx_crc_errors++;
|
|
|
-
|
|
|
- writeb(RX_OWN, &rmdp->u.s.status); /* Relinquish ownership to LANCE */
|
|
|
-
|
|
|
- }
|
|
|
- else /* We have a packet which can be queued for the upper layers */
|
|
|
- {
|
|
|
-
|
|
|
- int len = readw(&rmdp->mlen) & 0x0fff; /* extract message length from receive buffer */
|
|
|
- struct sk_buff *skb;
|
|
|
-
|
|
|
- skb = dev_alloc_skb(len+2); /* allocate socket buffer */
|
|
|
-
|
|
|
- if (skb == NULL) /* Could not get mem ? */
|
|
|
- {
|
|
|
-
|
|
|
- /*
|
|
|
- * Couldn't allocate sk_buffer so we give descriptor back
|
|
|
- * to Lance, update statistics and go ahead.
|
|
|
- */
|
|
|
-
|
|
|
- writeb(RX_OWN, &rmdp->u.s.status); /* Relinquish ownership to LANCE */
|
|
|
- printk("%s: Couldn't allocate sk_buff, deferring packet.\n",
|
|
|
- dev->name);
|
|
|
- p->stats.rx_dropped++;
|
|
|
-
|
|
|
- break; /* Jump out */
|
|
|
- }
|
|
|
-
|
|
|
- /* Prepare sk_buff to queue for upper layers */
|
|
|
-
|
|
|
- skb->dev = dev;
|
|
|
- skb_reserve(skb,2); /* Align IP header on 16 byte boundary */
|
|
|
-
|
|
|
- /*
|
|
|
- * Copy data out of our receive descriptor into sk_buff.
|
|
|
- *
|
|
|
- * (rmdp->u.buffer & 0x00ffffff) -> get address of buffer and
|
|
|
- * ignore status fields)
|
|
|
- */
|
|
|
-
|
|
|
- memcpy_fromio(skb_put(skb,len), (rmdp->u.buffer & 0x00ffffff), len);
|
|
|
-
|
|
|
-
|
|
|
- /*
|
|
|
- * Notify the upper protocol layers that there is another packet
|
|
|
- * to handle
|
|
|
- *
|
|
|
- * netif_rx() always succeeds. see /net/inet/dev.c for more.
|
|
|
- */
|
|
|
-
|
|
|
- skb->protocol=eth_type_trans(skb,dev);
|
|
|
- netif_rx(skb); /* queue packet and mark it for processing */
|
|
|
-
|
|
|
- /*
|
|
|
- * Packet is queued and marked for processing so we
|
|
|
- * free our descriptor and update statistics
|
|
|
- */
|
|
|
-
|
|
|
- writeb(RX_OWN, &rmdp->u.s.status);
|
|
|
- dev->last_rx = jiffies;
|
|
|
- p->stats.rx_packets++;
|
|
|
- p->stats.rx_bytes += len;
|
|
|
-
|
|
|
-
|
|
|
- p->rmdnum++;
|
|
|
- p->rmdnum %= RMDNUM;
|
|
|
-
|
|
|
- rmdp = p->rmdhead + p->rmdnum;
|
|
|
- }
|
|
|
- }
|
|
|
-} /* End of SK_rxintr() */
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_close
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/05/26
|
|
|
- *
|
|
|
- * Description : close gets called from dev_close() and should
|
|
|
- * deinstall the card (free_irq, mem etc).
|
|
|
- *
|
|
|
- * Parameters : I : struct net_device *dev - our device structure
|
|
|
- * Return Value : 0 - closed device driver
|
|
|
- * Errors : None
|
|
|
- * Globals : None
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-/* I have tried to set BOOT_ROM on and RAM off but then, after a 'ifconfig
|
|
|
- * down' the system stops. So I don't shut set card to init state.
|
|
|
- */
|
|
|
-
|
|
|
-static int SK_close(struct net_device *dev)
|
|
|
-{
|
|
|
-
|
|
|
- PRINTK(("## %s: SK_close(). CSR0: %#06x\n",
|
|
|
- SK_NAME, SK_read_reg(CSR0)));
|
|
|
-
|
|
|
- netif_stop_queue(dev); /* Transmitter busy */
|
|
|
-
|
|
|
- printk("%s: Shutting %s down CSR0 %#06x\n", dev->name, SK_NAME,
|
|
|
- (int) SK_read_reg(CSR0));
|
|
|
-
|
|
|
- SK_write_reg(CSR0, CSR0_STOP); /* STOP the LANCE */
|
|
|
-
|
|
|
- free_irq(dev->irq, dev); /* Free IRQ */
|
|
|
-
|
|
|
- return 0; /* always succeed */
|
|
|
-
|
|
|
-} /* End of SK_close() */
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_get_stats
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/05/26
|
|
|
- *
|
|
|
- * Description : Return current status structure to upper layers.
|
|
|
- * It is called by sprintf_stats (dev.c).
|
|
|
- *
|
|
|
- * Parameters : I : struct net_device *dev - our device structure
|
|
|
- * Return Value : struct net_device_stats * - our current statistics
|
|
|
- * Errors : None
|
|
|
- * Side Effects : None
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-static struct net_device_stats *SK_get_stats(struct net_device *dev)
|
|
|
-{
|
|
|
-
|
|
|
- struct priv *p = netdev_priv(dev);
|
|
|
-
|
|
|
- PRINTK(("## %s: SK_get_stats(). CSR0: %#06x\n",
|
|
|
- SK_NAME, SK_read_reg(CSR0)));
|
|
|
-
|
|
|
- return &p->stats; /* Return Device status */
|
|
|
-
|
|
|
-} /* End of SK_get_stats() */
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : set_multicast_list
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/05/26
|
|
|
- *
|
|
|
- * Description : This function gets called when a program performs
|
|
|
- * a SIOCSIFFLAGS call. Ifconfig does this if you call
|
|
|
- * 'ifconfig [-]allmulti' which enables or disables the
|
|
|
- * Promiscuous mode.
|
|
|
- * Promiscuous mode is when the Network card accepts all
|
|
|
- * packets, not only the packets which match our MAC
|
|
|
- * Address. It is useful for writing a network monitor,
|
|
|
- * but it is also a security problem. You have to remember
|
|
|
- * that all information on the net is not encrypted.
|
|
|
- *
|
|
|
- * Parameters : I : struct net_device *dev - SK_G16 device Structure
|
|
|
- * Return Value : None
|
|
|
- * Errors : None
|
|
|
- * Globals : None
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
- * 95/10/18 ACox New multicast calling scheme
|
|
|
--*/
|
|
|
-
|
|
|
-
|
|
|
-/* Set or clear the multicast filter for SK_G16.
|
|
|
- */
|
|
|
-
|
|
|
-static void set_multicast_list(struct net_device *dev)
|
|
|
-{
|
|
|
-
|
|
|
- if (dev->flags&IFF_PROMISC)
|
|
|
- {
|
|
|
- /* Reinitialize LANCE with MODE_PROM set */
|
|
|
- SK_lance_init(dev, MODE_PROM);
|
|
|
- }
|
|
|
- else if (dev->mc_count==0 && !(dev->flags&IFF_ALLMULTI))
|
|
|
- {
|
|
|
- /* Reinitialize LANCE without MODE_PROM */
|
|
|
- SK_lance_init(dev, MODE_NORMAL);
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- /* Multicast with logical address filter on */
|
|
|
- /* Reinitialize LANCE without MODE_PROM */
|
|
|
- SK_lance_init(dev, MODE_NORMAL);
|
|
|
-
|
|
|
- /* Not implemented yet. */
|
|
|
- }
|
|
|
-} /* End of set_multicast_list() */
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_rom_addr
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/06/01
|
|
|
- *
|
|
|
- * Description : Try to find a Boot_ROM at all possible locations
|
|
|
- *
|
|
|
- * Parameters : None
|
|
|
- * Return Value : Address where Boot_ROM is
|
|
|
- * Errors : 0 - Did not find Boot_ROM
|
|
|
- * Globals : None
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-unsigned int __init SK_rom_addr(void)
|
|
|
-{
|
|
|
- int i,j;
|
|
|
- int rom_found = 0;
|
|
|
- unsigned int rom_location[] = SK_BOOT_ROM_LOCATIONS;
|
|
|
- unsigned char rom_id[] = SK_BOOT_ROM_ID;
|
|
|
- unsigned char test_byte;
|
|
|
-
|
|
|
- /* Autodetect Boot_ROM */
|
|
|
- PRINTK(("## %s: Autodetection of Boot_ROM\n", SK_NAME));
|
|
|
-
|
|
|
- for (i = 0; (rom_location[i] != 0) && (rom_found == 0); i++)
|
|
|
- {
|
|
|
-
|
|
|
- PRINTK(("## Trying ROM location %#08x", rom_location[i]));
|
|
|
-
|
|
|
- rom_found = 1;
|
|
|
- for (j = 0; j < 6; j++)
|
|
|
- {
|
|
|
- test_byte = readb(rom_location[i]+j);
|
|
|
- PRINTK((" %02x ", *test_byte));
|
|
|
-
|
|
|
- if(test_byte != rom_id[j])
|
|
|
- {
|
|
|
- rom_found = 0;
|
|
|
- }
|
|
|
- }
|
|
|
- PRINTK(("\n"));
|
|
|
- }
|
|
|
-
|
|
|
- if (rom_found == 1)
|
|
|
- {
|
|
|
- PRINTK(("## %s: Boot_ROM found at %#08x\n",
|
|
|
- SK_NAME, rom_location[(i-1)]));
|
|
|
-
|
|
|
- return (rom_location[--i]);
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- PRINTK(("%s: No Boot_ROM found\n", SK_NAME));
|
|
|
- return 0;
|
|
|
- }
|
|
|
-} /* End of SK_rom_addr() */
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-/* LANCE access functions
|
|
|
- *
|
|
|
- * ! CSR1-3 can only be accessed when in CSR0 the STOP bit is set !
|
|
|
- */
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_reset_board
|
|
|
- *
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- *
|
|
|
- * Date Created : 94/05/25
|
|
|
- *
|
|
|
- * Description : This function resets SK_G16 and all components, but
|
|
|
- * POS registers are not changed
|
|
|
- *
|
|
|
- * Parameters : None
|
|
|
- * Return Value : None
|
|
|
- * Errors : None
|
|
|
- * Globals : SK_RAM *board - SK_RAM structure pointer
|
|
|
- *
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-void SK_reset_board(void)
|
|
|
-{
|
|
|
- writeb(0x00, SK_PORT); /* Reset active */
|
|
|
- mdelay(5); /* Delay min 5ms */
|
|
|
- writeb(SK_RESET, SK_PORT); /* Set back to normal operation */
|
|
|
-
|
|
|
-} /* End of SK_reset_board() */
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_set_RAP
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/05/25
|
|
|
- *
|
|
|
- * Description : Set LANCE Register Address Port to register
|
|
|
- * for later data transfer.
|
|
|
- *
|
|
|
- * Parameters : I : reg_number - which CSR to read/write from/to
|
|
|
- * Return Value : None
|
|
|
- * Errors : None
|
|
|
- * Globals : SK_RAM *board - SK_RAM structure pointer
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-void SK_set_RAP(int reg_number)
|
|
|
-{
|
|
|
- writew(reg_number, SK_IOREG);
|
|
|
- writeb(SK_RESET | SK_RAP | SK_WREG, SK_PORT);
|
|
|
- writeb(SK_DOIO, SK_IOCOM);
|
|
|
-
|
|
|
- while (readb(SK_PORT) & SK_IORUN)
|
|
|
- barrier();
|
|
|
-} /* End of SK_set_RAP() */
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_read_reg
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/05/25
|
|
|
- *
|
|
|
- * Description : Set RAP and read data from a LANCE CSR register
|
|
|
- *
|
|
|
- * Parameters : I : reg_number - which CSR to read from
|
|
|
- * Return Value : Register contents
|
|
|
- * Errors : None
|
|
|
- * Globals : SK_RAM *board - SK_RAM structure pointer
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-int SK_read_reg(int reg_number)
|
|
|
-{
|
|
|
- SK_set_RAP(reg_number);
|
|
|
-
|
|
|
- writeb(SK_RESET | SK_RDATA | SK_RREG, SK_PORT);
|
|
|
- writeb(SK_DOIO, SK_IOCOM);
|
|
|
-
|
|
|
- while (readb(SK_PORT) & SK_IORUN)
|
|
|
- barrier();
|
|
|
- return (readw(SK_IOREG));
|
|
|
-
|
|
|
-} /* End of SK_read_reg() */
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_rread_reg
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/05/28
|
|
|
- *
|
|
|
- * Description : Read data from preseted register.
|
|
|
- * This function requires that you know which
|
|
|
- * Register is actually set. Be aware that CSR1-3
|
|
|
- * can only be accessed when in CSR0 STOP is set.
|
|
|
- *
|
|
|
- * Return Value : Register contents
|
|
|
- * Errors : None
|
|
|
- * Globals : SK_RAM *board - SK_RAM structure pointer
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-int SK_rread_reg(void)
|
|
|
-{
|
|
|
- writeb(SK_RESET | SK_RDATA | SK_RREG, SK_PORT);
|
|
|
-
|
|
|
- writeb(SK_DOIO, SK_IOCOM);
|
|
|
-
|
|
|
- while (readb(SK_PORT) & SK_IORUN)
|
|
|
- barrier();
|
|
|
- return (readw(SK_IOREG));
|
|
|
-
|
|
|
-} /* End of SK_rread_reg() */
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_write_reg
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/05/25
|
|
|
- *
|
|
|
- * Description : This function sets the RAP then fills in the
|
|
|
- * LANCE I/O Reg and starts Transfer to LANCE.
|
|
|
- * It waits until transfer has ended which is max. 7 ms
|
|
|
- * and then it returns.
|
|
|
- *
|
|
|
- * Parameters : I : reg_number - which CSR to write to
|
|
|
- * I : value - what value to fill into register
|
|
|
- * Return Value : None
|
|
|
- * Errors : None
|
|
|
- * Globals : SK_RAM *board - SK_RAM structure pointer
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-void SK_write_reg(int reg_number, int value)
|
|
|
-{
|
|
|
- SK_set_RAP(reg_number);
|
|
|
-
|
|
|
- writew(value, SK_IOREG);
|
|
|
- writeb(SK_RESET | SK_RDATA | SK_WREG, SK_PORT);
|
|
|
- writeb(SK_DOIO, SK_IOCOM);
|
|
|
-
|
|
|
- while (readb(SK_PORT) & SK_IORUN)
|
|
|
- barrier();
|
|
|
-} /* End of SK_write_reg */
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-/*
|
|
|
- * Debugging functions
|
|
|
- * -------------------
|
|
|
- */
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_print_pos
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/05/25
|
|
|
- *
|
|
|
- * Description : This function prints out the 4 POS (Programmable
|
|
|
- * Option Select) Registers. Used mainly to debug operation.
|
|
|
- *
|
|
|
- * Parameters : I : struct net_device *dev - SK_G16 device structure
|
|
|
- * I : char * - Text which will be printed as title
|
|
|
- * Return Value : None
|
|
|
- * Errors : None
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-void SK_print_pos(struct net_device *dev, char *text)
|
|
|
-{
|
|
|
- int ioaddr = dev->base_addr;
|
|
|
-
|
|
|
- unsigned char pos0 = inb(SK_POS0),
|
|
|
- pos1 = inb(SK_POS1),
|
|
|
- pos2 = inb(SK_POS2),
|
|
|
- pos3 = inb(SK_POS3),
|
|
|
- pos4 = inb(SK_POS4);
|
|
|
-
|
|
|
-
|
|
|
- printk("## %s: %s.\n"
|
|
|
- "## pos0=%#4x pos1=%#4x pos2=%#04x pos3=%#08x pos4=%#04x\n",
|
|
|
- SK_NAME, text, pos0, pos1, pos2, (pos3<<14), pos4);
|
|
|
-
|
|
|
-} /* End of SK_print_pos() */
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_print_dev
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/05/25
|
|
|
- *
|
|
|
- * Description : This function simply prints out the important fields
|
|
|
- * of the device structure.
|
|
|
- *
|
|
|
- * Parameters : I : struct net_device *dev - SK_G16 device structure
|
|
|
- * I : char *text - Title for printing
|
|
|
- * Return Value : None
|
|
|
- * Errors : None
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-void SK_print_dev(struct net_device *dev, char *text)
|
|
|
-{
|
|
|
- if (dev == NULL)
|
|
|
- {
|
|
|
- printk("## %s: Device Structure. %s\n", SK_NAME, text);
|
|
|
- printk("## DEVICE == NULL\n");
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- printk("## %s: Device Structure. %s\n", SK_NAME, text);
|
|
|
- printk("## Device Name: %s Base Address: %#06lx IRQ: %d\n",
|
|
|
- dev->name, dev->base_addr, dev->irq);
|
|
|
-
|
|
|
- printk("## next device: %#08x init function: %#08x\n",
|
|
|
- (int) dev->next, (int) dev->init);
|
|
|
- }
|
|
|
-
|
|
|
-} /* End of SK_print_dev() */
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
-/*-
|
|
|
- * Function : SK_print_ram
|
|
|
- * Author : Patrick J.D. Weichmann
|
|
|
- * Date Created : 94/06/02
|
|
|
- *
|
|
|
- * Description : This function is used to check how are things set up
|
|
|
- * in the 16KB RAM. Also the pointers to the receive and
|
|
|
- * transmit descriptor rings and rx and tx buffers locations.
|
|
|
- * It contains a minor bug in printing, but has no effect to the values
|
|
|
- * only newlines are not correct.
|
|
|
- *
|
|
|
- * Parameters : I : struct net_device *dev - SK_G16 device structure
|
|
|
- * Return Value : None
|
|
|
- * Errors : None
|
|
|
- * Globals : None
|
|
|
- * Update History :
|
|
|
- * YY/MM/DD uid Description
|
|
|
--*/
|
|
|
-
|
|
|
-void __init SK_print_ram(struct net_device *dev)
|
|
|
-{
|
|
|
-
|
|
|
- int i;
|
|
|
- struct priv *p = netdev_priv(dev);
|
|
|
-
|
|
|
- printk("## %s: RAM Details.\n"
|
|
|
- "## RAM at %#08x tmdhead: %#08x rmdhead: %#08x initblock: %#08x\n",
|
|
|
- SK_NAME,
|
|
|
- (unsigned int) p->ram,
|
|
|
- (unsigned int) p->tmdhead,
|
|
|
- (unsigned int) p->rmdhead,
|
|
|
- (unsigned int) &(p->ram)->ib);
|
|
|
-
|
|
|
- printk("## ");
|
|
|
-
|
|
|
- for(i = 0; i < TMDNUM; i++)
|
|
|
- {
|
|
|
- if (!(i % 3)) /* Every third line do a newline */
|
|
|
- {
|
|
|
- printk("\n## ");
|
|
|
- }
|
|
|
- printk("tmdbufs%d: %#08x ", (i+1), (int) p->tmdbufs[i]);
|
|
|
- }
|
|
|
- printk("## ");
|
|
|
-
|
|
|
- for(i = 0; i < RMDNUM; i++)
|
|
|
- {
|
|
|
- if (!(i % 3)) /* Every third line do a newline */
|
|
|
- {
|
|
|
- printk("\n## ");
|
|
|
- }
|
|
|
- printk("rmdbufs%d: %#08x ", (i+1), (int) p->rmdbufs[i]);
|
|
|
- }
|
|
|
- printk("\n");
|
|
|
-
|
|
|
-} /* End of SK_print_ram() */
|
|
|
-
|
Adrian Bunk