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1626 |
jcastillo |
/*
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* Amiga Linux/68k A2065 Ethernet Driver
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*
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* (C) Copyright 1995 by Geert Uytterhoeven
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* (Geert.Uytterhoeven@cs.kuleuven.ac.be)
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*
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* Fixes and tips by:
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* - Janos Farkas (CHEXUM@sparta.banki.hu)
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* - Jes Degn Soerensen (jds@kom.auc.dk)
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*
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* ----------------------------------------------------------------------------
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*
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* This program is based on
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*
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* ariadne.?: Amiga Linux/68k Ariadne Ethernet Driver
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* (C) Copyright 1995 by Geert Uytterhoeven,
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* Peter De Schrijver
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*
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* lance.c: An AMD LANCE ethernet driver for linux.
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* Written 1993-94 by Donald Becker.
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*
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* Am79C960: PCnet(tm)-ISA Single-Chip Ethernet Controller
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* Advanced Micro Devices
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* Publication #16907, Rev. B, Amendment/0, May 1994
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*
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* ----------------------------------------------------------------------------
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of the Linux
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* distribution for more details.
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*
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* ----------------------------------------------------------------------------
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*
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* The A2065 is a Zorro-II board made by Commodore/Ameristar. It contains:
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*
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* - an Am7990 Local Area Network Controller for Ethernet (LANCE) with
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* both 10BASE-2 (thin coax) and AUI (DB-15) connectors
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*/
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#include <linux/module.h>
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#include <linux/stddef.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/string.h>
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#include <linux/ptrace.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/malloc.h>
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#include <linux/interrupt.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 <asm/bitops.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/bootinfo.h>
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#include <asm/amigaints.h>
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#include <asm/amigahw.h>
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#include <asm/zorro.h>
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#include "a2065.h"
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#ifdef A2065_DEBUG
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int a2065_debug = A2065_DEBUG;
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#else
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int a2065_debug = 1;
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#endif
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/*
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* Transmit/Receive Ring Definitions
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*/
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#define LANCE_LOG_TX_BUFFERS (2)
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#define LANCE_LOG_RX_BUFFERS (4)
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#define TX_RING_SIZE (1<<LANCE_LOG_TX_BUFFERS)
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#define RX_RING_SIZE (1<<LANCE_LOG_RX_BUFFERS)
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#define TX_RING_MOD_MASK (TX_RING_SIZE-1)
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#define RX_RING_MOD_MASK (RX_RING_SIZE-1)
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#define PKT_BUF_SIZE (1520)
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/*
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* Private Device Data
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*/
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struct a2065_private {
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struct A2065Board *board;
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struct TDRE *tx_ring[TX_RING_SIZE];
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struct RDRE *rx_ring[RX_RING_SIZE];
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u_char *tx_buff[TX_RING_SIZE];
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u_char *rx_buff[RX_RING_SIZE];
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int cur_tx, cur_rx; /* The next free ring entry */
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int dirty_tx; /* The ring entries to be free()ed. */
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struct enet_statistics stats;
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char tx_full;
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unsigned long lock;
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int key;
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};
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/*
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* Structure Created in the A2065's RAM Buffer
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*/
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struct lancedata {
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struct InitBlock init;
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struct TDRE tx_ring[TX_RING_SIZE];
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struct RDRE rx_ring[RX_RING_SIZE];
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u_char tx_buff[TX_RING_SIZE][PKT_BUF_SIZE];
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u_char rx_buff[RX_RING_SIZE][PKT_BUF_SIZE];
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};
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static int a2065_open(struct device *dev);
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static void a2065_init_ring(struct device *dev);
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static int a2065_start_xmit(struct sk_buff *skb, struct device *dev);
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static int a2065_rx(struct device *dev);
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static void a2065_interrupt(int irq, struct pt_regs *fp, void *data);
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static int a2065_close(struct device *dev);
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static struct enet_statistics *a2065_get_stats(struct device *dev);
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static void set_multicast_list(struct device *dev);
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int a2065_probe(struct device *dev)
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{
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int key1, key2;
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struct ConfigDev *cd;
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u_long board;
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u_long sn;
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struct a2065_private *priv;
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if ((key1 = zorro_find(MANUF_COMMODORE, PROD_A2065, 0, 0)) ||
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(key2 = zorro_find(MANUF_AMERISTAR, PROD_AMERISTAR2065, 0, 0))) {
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cd = zorro_get_board(key1 ? key1 : key2);
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if ((board = (u_long)cd->cd_BoardAddr)) {
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sn = cd->cd_Rom.er_SerialNumber;
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if (key1) { /* Commodore */
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dev->dev_addr[0] = 0x00;
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dev->dev_addr[1] = 0x80;
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dev->dev_addr[2] = 0x10;
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} else { /* Ameristar */
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dev->dev_addr[0] = 0x00;
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dev->dev_addr[1] = 0x00;
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dev->dev_addr[2] = 0x9f;
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}
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dev->dev_addr[3] = (sn>>16) & 0xff;
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dev->dev_addr[4] = (sn>>8) & 0xff;
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dev->dev_addr[5] = sn & 0xff;
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printk("%s: A2065 at 0x%08lx, Ethernet Address %02x:%02x:%02x:%02x:%02x:%02x\n",
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dev->name, board, dev->dev_addr[0],
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dev->dev_addr[1], dev->dev_addr[2],
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dev->dev_addr[3], dev->dev_addr[4],
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| 159 |
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dev->dev_addr[5]);
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init_etherdev(dev, 0);
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dev->priv = kmalloc(sizeof(struct
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a2065_private),
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GFP_KERNEL);
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priv = (struct a2065_private *)dev->priv;
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memset(priv, 0, sizeof(struct a2065_private));
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| 169 |
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priv->board = (struct A2065Board *)ZTWO_VADDR(board);
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priv->key = key1 ? key1 : key2;
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dev->open = &a2065_open;
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dev->stop = &a2065_close;
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dev->hard_start_xmit = &a2065_start_xmit;
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dev->get_stats = &a2065_get_stats;
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dev->set_multicast_list = &set_multicast_list;
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zorro_config_board(key1 ? key1 : key2, 0);
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return(0);
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}
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}
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return(ENODEV);
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}
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| 185 |
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static int a2065_open(struct device *dev)
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{
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struct a2065_private *priv = (struct a2065_private *)dev->priv;
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struct A2065Board *board = priv->board;
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struct lancedata *lancedata; /* LANCE point of view */
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struct lancedata *alancedata; /* Amiga point of view */
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| 193 |
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lancedata = (struct lancedata *)offsetof(struct A2065Board, RAM);
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alancedata = (struct lancedata *)board->RAM;
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| 196 |
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/* Stop the LANCE */
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board->Lance.RAP = CSR0; /* LANCE Controller Status */
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board->Lance.RDP = STOP;
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/* Enable big endian byte ordering */
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board->Lance.RAP = CSR3; /* CSR3 */
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board->Lance.RDP = BSWP;
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/* Set the Init Block Pointer */
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board->Lance.RAP = CSR1; /* IADR[15:0] */
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board->Lance.RDP = (u_long)&lancedata->init;
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board->Lance.RAP = CSR2; /* IADR[23:16] */
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board->Lance.RDP = 0x0000;
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/* Set the Mode */
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alancedata->init.Mode = 0;
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/* Set the Ethernet Hardware Address */
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/* Physical Address Register */
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alancedata->init.PADR[0] = dev->dev_addr[1];
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alancedata->init.PADR[1] = dev->dev_addr[0];
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alancedata->init.PADR[2] = dev->dev_addr[3];
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alancedata->init.PADR[3] = dev->dev_addr[2];
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alancedata->init.PADR[4] = dev->dev_addr[5];
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alancedata->init.PADR[5] = dev->dev_addr[4];
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/* Set the Multicast Table */
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/* Logical Address Filter, LADRF[31:0] */
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alancedata->init.LADRF[0] = 0x00000000;
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/* Logical Address Filter, LADRF[63:32] */
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alancedata->init.LADRF[1] = 0x00000000;
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| 228 |
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/* Set the Receive and Transmit Descriptor Ring Pointers */
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| 229 |
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alancedata->init.RDRA = (u_long)&lancedata->rx_ring;
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alancedata->init.RLEN = LANCE_LOG_RX_BUFFERS << 13;
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alancedata->init.TDRA = (u_long)&lancedata->tx_ring;
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| 232 |
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alancedata->init.TLEN = LANCE_LOG_TX_BUFFERS << 13;
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| 233 |
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| 234 |
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/* Initialise the Rings */
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| 235 |
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a2065_init_ring(dev);
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| 236 |
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| 237 |
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| 238 |
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/* Install the Interrupt handler */
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| 239 |
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if (!add_isr(IRQ_AMIGA_PORTS, a2065_interrupt, 0, dev, "a2065 Ethernet"))
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| 240 |
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return(-EAGAIN);
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| 241 |
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| 242 |
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/* Make the LANCE read the Init Block */
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| 243 |
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board->Lance.RAP = CSR0; /* LANCE Controller Status */
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| 244 |
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board->Lance.RDP = INEA|INIT;
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| 245 |
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| 246 |
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dev->tbusy = 0;
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| 247 |
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dev->interrupt = 0;
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| 248 |
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dev->start = 1;
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| 249 |
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| 250 |
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MOD_INC_USE_COUNT;
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| 251 |
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| 252 |
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return(0);
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| 253 |
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}
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| 254 |
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| 255 |
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| 256 |
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static void a2065_init_ring(struct device *dev)
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| 257 |
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{
|
| 258 |
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struct a2065_private *priv = (struct a2065_private *)dev->priv;
|
| 259 |
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struct A2065Board *board = priv->board;
|
| 260 |
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struct lancedata *lancedata; /* LANCE point of view */
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| 261 |
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struct lancedata *alancedata; /* Amiga point of view */
|
| 262 |
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int i;
|
| 263 |
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|
| 264 |
|
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priv->lock = 0, priv->tx_full = 0;
|
| 265 |
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priv->cur_rx = priv->cur_tx = 0;
|
| 266 |
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priv->dirty_tx = 0;
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| 267 |
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|
| 268 |
|
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lancedata = (struct lancedata *)offsetof(struct A2065Board, RAM);
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| 269 |
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alancedata = (struct lancedata *)board->RAM;
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| 270 |
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|
| 271 |
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/* Set up TX Ring */
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| 272 |
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for (i = 0; i < TX_RING_SIZE; i++) {
|
| 273 |
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alancedata->tx_ring[i].TMD0 = (u_long)lancedata->tx_buff[i];
|
| 274 |
|
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alancedata->tx_ring[i].TMD1 = TF_STP|TF_ENP;
|
| 275 |
|
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alancedata->tx_ring[i].TMD2 = -PKT_BUF_SIZE;
|
| 276 |
|
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alancedata->tx_ring[i].TMD3 = 0x0000;
|
| 277 |
|
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priv->tx_ring[i] = &alancedata->tx_ring[i];
|
| 278 |
|
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priv->tx_buff[i] = alancedata->tx_buff[i];
|
| 279 |
|
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#if 0
|
| 280 |
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printk("TX Entry %2d @ 0x%08x (LANCE 0x%08x), Buf @ 0x%08x (LANCE 0x%08x)\n", i,
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| 281 |
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(int)&alancedata->tx_ring[i],
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| 282 |
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(int)&lancedata->tx_ring[i],
|
| 283 |
|
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(int)alancedata->tx_buff[i],
|
| 284 |
|
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(int)lancedata->tx_buff[i]);
|
| 285 |
|
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#endif
|
| 286 |
|
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}
|
| 287 |
|
|
|
| 288 |
|
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/* Set up RX Ring */
|
| 289 |
|
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for (i = 0; i < RX_RING_SIZE; i++) {
|
| 290 |
|
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alancedata->rx_ring[i].RMD0 = (u_long)lancedata->rx_buff[i];
|
| 291 |
|
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alancedata->rx_ring[i].RMD1 = RF_OWN;
|
| 292 |
|
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alancedata->rx_ring[i].RMD2 = -PKT_BUF_SIZE;
|
| 293 |
|
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alancedata->rx_ring[i].RMD3 = 0x0000;
|
| 294 |
|
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priv->rx_ring[i] = &alancedata->rx_ring[i];
|
| 295 |
|
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priv->rx_buff[i] = alancedata->rx_buff[i];
|
| 296 |
|
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#if 0
|
| 297 |
|
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printk("RX Entry %2d @ 0x%08x (LANCE 0x%08x), Buf @ 0x%08x (LANCE 0x%08x)\n", i,
|
| 298 |
|
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(int)&alancedata->rx_ring[i],
|
| 299 |
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(int)&lancedata->rx_ring[i],
|
| 300 |
|
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(int)alancedata->rx_buff[i],
|
| 301 |
|
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(int)lancedata->rx_buff[i]);
|
| 302 |
|
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#endif
|
| 303 |
|
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}
|
| 304 |
|
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}
|
| 305 |
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|
|
| 306 |
|
|
|
| 307 |
|
|
static int a2065_close(struct device *dev)
|
| 308 |
|
|
{
|
| 309 |
|
|
struct a2065_private *priv = (struct a2065_private *)dev->priv;
|
| 310 |
|
|
struct A2065Board *board = priv->board;
|
| 311 |
|
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|
| 312 |
|
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dev->start = 0;
|
| 313 |
|
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dev->tbusy = 1;
|
| 314 |
|
|
|
| 315 |
|
|
board->Lance.RAP = CSR0; /* LANCE Controller Status */
|
| 316 |
|
|
|
| 317 |
|
|
if (a2065_debug > 1) {
|
| 318 |
|
|
printk("%s: Shutting down ethercard, status was %2.2x.\n",
|
| 319 |
|
|
dev->name, board->Lance.RDP);
|
| 320 |
|
|
printk("%s: %d packets missed\n", dev->name,
|
| 321 |
|
|
priv->stats.rx_missed_errors);
|
| 322 |
|
|
}
|
| 323 |
|
|
|
| 324 |
|
|
/* We stop the LANCE here - it occasionally polls memory if we don't */
|
| 325 |
|
|
board->Lance.RDP = STOP;
|
| 326 |
|
|
|
| 327 |
|
|
remove_isr(IRQ_AMIGA_PORTS, a2065_interrupt, dev);
|
| 328 |
|
|
|
| 329 |
|
|
MOD_DEC_USE_COUNT;
|
| 330 |
|
|
|
| 331 |
|
|
return(0);
|
| 332 |
|
|
}
|
| 333 |
|
|
|
| 334 |
|
|
|
| 335 |
|
|
static void a2065_interrupt(int irq, struct pt_regs *fp, void *data)
|
| 336 |
|
|
{
|
| 337 |
|
|
struct device *dev = (struct device *)data;
|
| 338 |
|
|
struct a2065_private *priv;
|
| 339 |
|
|
struct A2065Board *board;
|
| 340 |
|
|
int csr0, boguscnt = 10;
|
| 341 |
|
|
|
| 342 |
|
|
if (dev == NULL) {
|
| 343 |
|
|
printk("a2065_interrupt(): irq for unknown device.\n");
|
| 344 |
|
|
return;
|
| 345 |
|
|
}
|
| 346 |
|
|
|
| 347 |
|
|
priv = (struct a2065_private *)dev->priv;
|
| 348 |
|
|
board = priv->board;
|
| 349 |
|
|
|
| 350 |
|
|
board->Lance.RAP = CSR0; /* LANCE Controller Status */
|
| 351 |
|
|
|
| 352 |
|
|
if (!(board->Lance.RDP & INTR)) /* Check if any interrupt has
|
| 353 |
|
|
been generated by the board. */
|
| 354 |
|
|
return;
|
| 355 |
|
|
|
| 356 |
|
|
if (dev->interrupt)
|
| 357 |
|
|
printk("%s: Re-entering the interrupt handler.\n", dev->name);
|
| 358 |
|
|
|
| 359 |
|
|
dev->interrupt = 1;
|
| 360 |
|
|
|
| 361 |
|
|
while ((csr0 = board->Lance.RDP) & (ERR|RINT|TINT) && --boguscnt >= 0){
|
| 362 |
|
|
/* Acknowledge all of the current interrupt sources ASAP. */
|
| 363 |
|
|
board->Lance.RDP = csr0 & ~(INEA|TDMD|STOP|STRT|INIT);
|
| 364 |
|
|
|
| 365 |
|
|
#if 0
|
| 366 |
|
|
if (a2065_debug > 5) {
|
| 367 |
|
|
printk("%s: interrupt csr0=%#2.2x new csr=%#2.2x.",
|
| 368 |
|
|
dev->name, csr0, board->Lance.RDP);
|
| 369 |
|
|
printk("[");
|
| 370 |
|
|
if (csr0 & INTR)
|
| 371 |
|
|
printk(" INTR");
|
| 372 |
|
|
if (csr0 & INEA)
|
| 373 |
|
|
printk(" INEA");
|
| 374 |
|
|
if (csr0 & RXON)
|
| 375 |
|
|
printk(" RXON");
|
| 376 |
|
|
if (csr0 & TXON)
|
| 377 |
|
|
printk(" TXON");
|
| 378 |
|
|
if (csr0 & TDMD)
|
| 379 |
|
|
printk(" TDMD");
|
| 380 |
|
|
if (csr0 & STOP)
|
| 381 |
|
|
printk(" STOP");
|
| 382 |
|
|
if (csr0 & STRT)
|
| 383 |
|
|
printk(" STRT");
|
| 384 |
|
|
if (csr0 & INIT)
|
| 385 |
|
|
printk(" INIT");
|
| 386 |
|
|
if (csr0 & ERR)
|
| 387 |
|
|
printk(" ERR");
|
| 388 |
|
|
if (csr0 & BABL)
|
| 389 |
|
|
printk(" BABL");
|
| 390 |
|
|
if (csr0 & CERR)
|
| 391 |
|
|
printk(" CERR");
|
| 392 |
|
|
if (csr0 & MISS)
|
| 393 |
|
|
printk(" MISS");
|
| 394 |
|
|
if (csr0 & MERR)
|
| 395 |
|
|
printk(" MERR");
|
| 396 |
|
|
if (csr0 & RINT)
|
| 397 |
|
|
printk(" RINT");
|
| 398 |
|
|
if (csr0 & TINT)
|
| 399 |
|
|
printk(" TINT");
|
| 400 |
|
|
if (csr0 & IDON)
|
| 401 |
|
|
printk(" IDON");
|
| 402 |
|
|
printk(" ]\n");
|
| 403 |
|
|
}
|
| 404 |
|
|
#endif
|
| 405 |
|
|
|
| 406 |
|
|
if (csr0 & RINT) /* Rx interrupt */
|
| 407 |
|
|
a2065_rx(dev);
|
| 408 |
|
|
|
| 409 |
|
|
if (csr0 & TINT) { /* Tx-done interrupt */
|
| 410 |
|
|
int dirty_tx = priv->dirty_tx;
|
| 411 |
|
|
|
| 412 |
|
|
while (dirty_tx < priv->cur_tx) {
|
| 413 |
|
|
int entry = dirty_tx % TX_RING_SIZE;
|
| 414 |
|
|
int status =
|
| 415 |
|
|
priv->tx_ring[entry]->TMD1 & 0xff00;
|
| 416 |
|
|
|
| 417 |
|
|
if (status & TF_OWN)
|
| 418 |
|
|
break; /* It still hasn't been Txed */
|
| 419 |
|
|
|
| 420 |
|
|
priv->tx_ring[entry]->TMD1 &= 0x00ff;
|
| 421 |
|
|
|
| 422 |
|
|
if (status & TF_ERR) {
|
| 423 |
|
|
/* There was an major error, log it. */
|
| 424 |
|
|
int err_status =
|
| 425 |
|
|
priv->tx_ring[entry]->TMD3;
|
| 426 |
|
|
priv->stats.tx_errors++;
|
| 427 |
|
|
if (err_status & EF_RTRY)
|
| 428 |
|
|
priv->stats.tx_aborted_errors++;
|
| 429 |
|
|
if (err_status & EF_LCAR)
|
| 430 |
|
|
priv->stats.tx_carrier_errors++;
|
| 431 |
|
|
if (err_status & EF_LCOL)
|
| 432 |
|
|
priv->stats.tx_window_errors++;
|
| 433 |
|
|
if (err_status & EF_UFLO) {
|
| 434 |
|
|
/* Ackk! On FIFO errors the Tx unit is turned off! */
|
| 435 |
|
|
priv->stats.tx_fifo_errors++;
|
| 436 |
|
|
/* Remove this verbosity later! */
|
| 437 |
|
|
printk("%s: Tx FIFO error! Status %4.4x.\n", dev->name, csr0);
|
| 438 |
|
|
/* Restart the chip. */
|
| 439 |
|
|
board->Lance.RDP = STRT;
|
| 440 |
|
|
}
|
| 441 |
|
|
} else {
|
| 442 |
|
|
if (status & (TF_MORE|TF_ONE))
|
| 443 |
|
|
priv->stats.collisions++;
|
| 444 |
|
|
priv->stats.tx_packets++;
|
| 445 |
|
|
}
|
| 446 |
|
|
dirty_tx++;
|
| 447 |
|
|
}
|
| 448 |
|
|
|
| 449 |
|
|
#ifndef final_version
|
| 450 |
|
|
if (priv->cur_tx - dirty_tx >= TX_RING_SIZE) {
|
| 451 |
|
|
printk("out-of-sync dirty pointer, %d vs. %d, full=%d.\n",
|
| 452 |
|
|
dirty_tx, priv->cur_tx, priv->tx_full);
|
| 453 |
|
|
dirty_tx += TX_RING_SIZE;
|
| 454 |
|
|
}
|
| 455 |
|
|
#endif
|
| 456 |
|
|
|
| 457 |
|
|
if (priv->tx_full && dev->tbusy && dirty_tx >
|
| 458 |
|
|
priv->cur_tx - TX_RING_SIZE + 2) {
|
| 459 |
|
|
/* The ring is no longer full, clear tbusy. */
|
| 460 |
|
|
priv->tx_full = 0;
|
| 461 |
|
|
dev->tbusy = 0;
|
| 462 |
|
|
mark_bh(NET_BH);
|
| 463 |
|
|
}
|
| 464 |
|
|
|
| 465 |
|
|
priv->dirty_tx = dirty_tx;
|
| 466 |
|
|
}
|
| 467 |
|
|
|
| 468 |
|
|
/* Log misc errors. */
|
| 469 |
|
|
if (csr0 & BABL)
|
| 470 |
|
|
priv->stats.tx_errors++; /* Tx babble. */
|
| 471 |
|
|
if (csr0 & MISS)
|
| 472 |
|
|
priv->stats.rx_errors++; /* Missed a Rx frame. */
|
| 473 |
|
|
if (csr0 & MERR) {
|
| 474 |
|
|
printk("%s: Bus master arbitration failure, status %4.4x.\n", dev->name, csr0);
|
| 475 |
|
|
/* Restart the chip. */
|
| 476 |
|
|
board->Lance.RDP = STRT;
|
| 477 |
|
|
}
|
| 478 |
|
|
}
|
| 479 |
|
|
|
| 480 |
|
|
/* Clear any other interrupt, and set interrupt enable. */
|
| 481 |
|
|
board->Lance.RAP = CSR0; /* LANCE Controller Status */
|
| 482 |
|
|
board->Lance.RDP = INEA|BABL|CERR|MISS|MERR|IDON;
|
| 483 |
|
|
|
| 484 |
|
|
#if 0
|
| 485 |
|
|
if (a2065_debug > 4)
|
| 486 |
|
|
printk("%s: exiting interrupt, csr%d=%#4.4x.\n",
|
| 487 |
|
|
dev->name, board->Lance.RAP, board->Lance.RDP);
|
| 488 |
|
|
#endif
|
| 489 |
|
|
|
| 490 |
|
|
dev->interrupt = 0;
|
| 491 |
|
|
return;
|
| 492 |
|
|
}
|
| 493 |
|
|
|
| 494 |
|
|
|
| 495 |
|
|
static int a2065_start_xmit(struct sk_buff *skb, struct device *dev)
|
| 496 |
|
|
{
|
| 497 |
|
|
struct a2065_private *priv = (struct a2065_private *)dev->priv;
|
| 498 |
|
|
struct A2065Board *board = priv->board;
|
| 499 |
|
|
int entry;
|
| 500 |
|
|
|
| 501 |
|
|
/* Transmitter timeout, serious problems. */
|
| 502 |
|
|
if (dev->tbusy) {
|
| 503 |
|
|
int tickssofar = jiffies - dev->trans_start;
|
| 504 |
|
|
if (tickssofar < 20)
|
| 505 |
|
|
return(1);
|
| 506 |
|
|
board->Lance.RAP = CSR0; /* LANCE Controller Status */
|
| 507 |
|
|
printk("%s: transmit timed out, status %4.4x, resetting.\n", dev->name, board->Lance.RDP);
|
| 508 |
|
|
board->Lance.RDP = STOP;
|
| 509 |
|
|
|
| 510 |
|
|
/* Enable big endian byte ordering */
|
| 511 |
|
|
board->Lance.RAP = CSR3; /* CSR3 */
|
| 512 |
|
|
board->Lance.RDP = BSWP;
|
| 513 |
|
|
|
| 514 |
|
|
priv->stats.tx_errors++;
|
| 515 |
|
|
#ifndef final_version
|
| 516 |
|
|
{
|
| 517 |
|
|
int i;
|
| 518 |
|
|
printk(" Ring data dump: dirty_tx %d cur_tx %d%s cur_rx %d.",
|
| 519 |
|
|
priv->dirty_tx, priv->cur_tx, priv->tx_full ?
|
| 520 |
|
|
" (full)" : "", priv->cur_rx);
|
| 521 |
|
|
for (i = 0 ; i < RX_RING_SIZE; i++)
|
| 522 |
|
|
printk("%s %08x %04x %04x", i & 0x3 ? "" : "\n ",
|
| 523 |
|
|
((priv->rx_ring[i]->RMD1)<<16) |
|
| 524 |
|
|
priv->rx_ring[i]->RMD0,
|
| 525 |
|
|
-priv->rx_ring[i]->RMD2, priv->rx_ring[i]->RMD3);
|
| 526 |
|
|
for (i = 0 ; i < TX_RING_SIZE; i++)
|
| 527 |
|
|
printk("%s %08x %04x %04x", i & 0x3 ? "" : "\n ",
|
| 528 |
|
|
((priv->tx_ring[i]->TMD1)<<16) |
|
| 529 |
|
|
priv->tx_ring[i]->TMD0,
|
| 530 |
|
|
-priv->tx_ring[i]->TMD2, priv->tx_ring[i]->TMD3);
|
| 531 |
|
|
printk("\n");
|
| 532 |
|
|
}
|
| 533 |
|
|
#endif
|
| 534 |
|
|
a2065_init_ring(dev);
|
| 535 |
|
|
board->Lance.RDP = INEA|INIT;
|
| 536 |
|
|
|
| 537 |
|
|
dev->tbusy = 0;
|
| 538 |
|
|
dev->trans_start = jiffies;
|
| 539 |
|
|
dev_kfree_skb(skb, FREE_WRITE);
|
| 540 |
|
|
return(0);
|
| 541 |
|
|
}
|
| 542 |
|
|
|
| 543 |
|
|
if (skb == NULL) {
|
| 544 |
|
|
dev_tint(dev);
|
| 545 |
|
|
return(0);
|
| 546 |
|
|
}
|
| 547 |
|
|
|
| 548 |
|
|
if (skb->len <= 0)
|
| 549 |
|
|
return(0);
|
| 550 |
|
|
|
| 551 |
|
|
#if 0
|
| 552 |
|
|
if (a2065_debug > 3) {
|
| 553 |
|
|
board->Lance.RAP = CSR0; /* LANCE Controller Status */
|
| 554 |
|
|
printk("%s: a2065_start_xmit() called, csr0 %4.4x.\n",
|
| 555 |
|
|
dev->name, board->Lance.RDP);
|
| 556 |
|
|
board->Lance.RDP = 0x0000;
|
| 557 |
|
|
}
|
| 558 |
|
|
#endif
|
| 559 |
|
|
|
| 560 |
|
|
/*
|
| 561 |
|
|
* Block a timer-based transmit from overlapping. This could better be
|
| 562 |
|
|
* done with atomic_swap(1, dev->tbusy), but set_bit() works as well.
|
| 563 |
|
|
*/
|
| 564 |
|
|
if (set_bit(0, (void*)&dev->tbusy) != 0) {
|
| 565 |
|
|
printk("%s: Transmitter access conflict.\n", dev->name);
|
| 566 |
|
|
return(1);
|
| 567 |
|
|
}
|
| 568 |
|
|
|
| 569 |
|
|
if (set_bit(0, (void*)&priv->lock) != 0) {
|
| 570 |
|
|
if (a2065_debug > 0)
|
| 571 |
|
|
printk("%s: tx queue lock!.\n", dev->name);
|
| 572 |
|
|
/* don't clear dev->tbusy flag. */
|
| 573 |
|
|
return(1);
|
| 574 |
|
|
}
|
| 575 |
|
|
|
| 576 |
|
|
/* Fill in a Tx ring entry */
|
| 577 |
|
|
|
| 578 |
|
|
#if 0
|
| 579 |
|
|
printk("TX pkt type 0x%04x from ", ((u_short *)skb->data)[6]);
|
| 580 |
|
|
{
|
| 581 |
|
|
int i;
|
| 582 |
|
|
u_char *ptr = &((u_char *)skb->data)[6];
|
| 583 |
|
|
for (i = 0; i < 6; i++)
|
| 584 |
|
|
printk("%02x", ptr[i]);
|
| 585 |
|
|
}
|
| 586 |
|
|
printk(" to ");
|
| 587 |
|
|
{
|
| 588 |
|
|
int i;
|
| 589 |
|
|
u_char *ptr = (u_char *)skb->data;
|
| 590 |
|
|
for (i = 0; i < 6; i++)
|
| 591 |
|
|
printk("%02x", ptr[i]);
|
| 592 |
|
|
}
|
| 593 |
|
|
printk(" data 0x%08x len %d\n", (int)skb->data, (int)skb->len);
|
| 594 |
|
|
#endif
|
| 595 |
|
|
|
| 596 |
|
|
entry = priv->cur_tx % TX_RING_SIZE;
|
| 597 |
|
|
|
| 598 |
|
|
priv->tx_ring[entry]->TMD2 = -(ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN);
|
| 599 |
|
|
priv->tx_ring[entry]->TMD3 = 0x0000;
|
| 600 |
|
|
memcpy(priv->tx_buff[entry], skb->data, skb->len);
|
| 601 |
|
|
|
| 602 |
|
|
#if 0
|
| 603 |
|
|
{
|
| 604 |
|
|
int i, len;
|
| 605 |
|
|
|
| 606 |
|
|
len = skb->len > 64 ? 64 : skb->len;
|
| 607 |
|
|
for (i = 0; i < len; i += 8) {
|
| 608 |
|
|
int j;
|
| 609 |
|
|
printk("%02x:", i);
|
| 610 |
|
|
for (j = 0; (j < 16) && ((i+j) < len); j++) {
|
| 611 |
|
|
if (!(j & 1))
|
| 612 |
|
|
printk(" ");
|
| 613 |
|
|
printk("%02x", priv->tx_buff[entry][i+j]);
|
| 614 |
|
|
}
|
| 615 |
|
|
printk("\n");
|
| 616 |
|
|
}
|
| 617 |
|
|
}
|
| 618 |
|
|
#endif
|
| 619 |
|
|
|
| 620 |
|
|
priv->tx_ring[entry]->TMD1 = (priv->tx_ring[entry]->TMD1 &
|
| 621 |
|
|
0x00ff)|TF_OWN|TF_STP|TF_ENP;
|
| 622 |
|
|
|
| 623 |
|
|
dev_kfree_skb(skb, FREE_WRITE);
|
| 624 |
|
|
|
| 625 |
|
|
priv->cur_tx++;
|
| 626 |
|
|
if ((priv->cur_tx >= TX_RING_SIZE)&&(priv->dirty_tx >= TX_RING_SIZE)){
|
| 627 |
|
|
|
| 628 |
|
|
#if 0
|
| 629 |
|
|
printk("*** Subtracting TX_RING_SIZE from cur_tx (%d) and dirty_tx (%d)\n",
|
| 630 |
|
|
priv->cur_tx, priv->dirty_tx);
|
| 631 |
|
|
#endif
|
| 632 |
|
|
|
| 633 |
|
|
priv->cur_tx -= TX_RING_SIZE;
|
| 634 |
|
|
priv->dirty_tx -= TX_RING_SIZE;
|
| 635 |
|
|
}
|
| 636 |
|
|
|
| 637 |
|
|
/* Trigger an immediate send poll. */
|
| 638 |
|
|
board->Lance.RAP = CSR0; /* LANCE Controller Status */
|
| 639 |
|
|
board->Lance.RDP = INEA|TDMD;
|
| 640 |
|
|
|
| 641 |
|
|
dev->trans_start = jiffies;
|
| 642 |
|
|
|
| 643 |
|
|
cli();
|
| 644 |
|
|
priv->lock = 0;
|
| 645 |
|
|
if ((priv->tx_ring[(entry+1) % TX_RING_SIZE]->TMD1 & 0xff00) == 0)
|
| 646 |
|
|
dev->tbusy = 0;
|
| 647 |
|
|
else
|
| 648 |
|
|
priv->tx_full = 1;
|
| 649 |
|
|
sti();
|
| 650 |
|
|
|
| 651 |
|
|
return(0);
|
| 652 |
|
|
}
|
| 653 |
|
|
|
| 654 |
|
|
|
| 655 |
|
|
static int a2065_rx(struct device *dev)
|
| 656 |
|
|
{
|
| 657 |
|
|
struct a2065_private *priv = (struct a2065_private *)dev->priv;
|
| 658 |
|
|
int entry = priv->cur_rx % RX_RING_SIZE;
|
| 659 |
|
|
int i;
|
| 660 |
|
|
|
| 661 |
|
|
/* If we own the next entry, it's a new packet. Send it up. */
|
| 662 |
|
|
while (!(priv->rx_ring[entry]->RMD1 & RF_OWN)) {
|
| 663 |
|
|
int status = priv->rx_ring[entry]->RMD1 & 0xff00;
|
| 664 |
|
|
|
| 665 |
|
|
if (status != (RF_STP|RF_ENP)) { /* There was an error. */
|
| 666 |
|
|
/* There is a tricky error noted by John Murphy,
|
| 667 |
|
|
<murf@perftech.com> to Russ Nelson: Even with full-sized
|
| 668 |
|
|
buffers it's possible for a jabber packet to use two
|
| 669 |
|
|
buffers, with only the last correctly noting the error. */
|
| 670 |
|
|
if (status & RF_ENP)
|
| 671 |
|
|
/* Only count a general error at the */
|
| 672 |
|
|
priv->stats.rx_errors++; /* end of a packet.*/
|
| 673 |
|
|
if (status & RF_FRAM)
|
| 674 |
|
|
priv->stats.rx_frame_errors++;
|
| 675 |
|
|
if (status & RF_OFLO)
|
| 676 |
|
|
priv->stats.rx_over_errors++;
|
| 677 |
|
|
if (status & RF_CRC)
|
| 678 |
|
|
priv->stats.rx_crc_errors++;
|
| 679 |
|
|
if (status & RF_BUFF)
|
| 680 |
|
|
priv->stats.rx_fifo_errors++;
|
| 681 |
|
|
priv->rx_ring[entry]->RMD1 &= 0x00ff|RF_STP|RF_ENP;
|
| 682 |
|
|
} else {
|
| 683 |
|
|
/* Malloc up new buffer, compatible with net-3. */
|
| 684 |
|
|
short pkt_len = priv->rx_ring[entry]->RMD3;
|
| 685 |
|
|
struct sk_buff *skb;
|
| 686 |
|
|
|
| 687 |
|
|
if(pkt_len<60)
|
| 688 |
|
|
{
|
| 689 |
|
|
printk("%s: Runt packet!\n",dev->name);
|
| 690 |
|
|
priv->stats.rx_errors++;
|
| 691 |
|
|
}
|
| 692 |
|
|
else
|
| 693 |
|
|
{
|
| 694 |
|
|
skb = dev_alloc_skb(pkt_len+2);
|
| 695 |
|
|
if (skb == NULL) {
|
| 696 |
|
|
printk("%s: Memory squeeze, deferring packet.\n", dev->name);
|
| 697 |
|
|
for (i = 0; i < RX_RING_SIZE; i++)
|
| 698 |
|
|
if (priv->rx_ring[(entry+i) % RX_RING_SIZE]->RMD1 & RF_OWN)
|
| 699 |
|
|
break;
|
| 700 |
|
|
|
| 701 |
|
|
if (i > RX_RING_SIZE-2) {
|
| 702 |
|
|
priv->stats.rx_dropped++;
|
| 703 |
|
|
priv->rx_ring[entry]->RMD1 |= RF_OWN;
|
| 704 |
|
|
priv->cur_rx++;
|
| 705 |
|
|
}
|
| 706 |
|
|
break;
|
| 707 |
|
|
}
|
| 708 |
|
|
skb->dev = dev;
|
| 709 |
|
|
skb_reserve(skb,2); /* 16 byte align */
|
| 710 |
|
|
skb_put(skb,pkt_len); /* Make room */
|
| 711 |
|
|
eth_copy_and_sum(skb,
|
| 712 |
|
|
priv->rx_buff[entry],
|
| 713 |
|
|
pkt_len,0);
|
| 714 |
|
|
skb->protocol=eth_type_trans(skb,dev);
|
| 715 |
|
|
#if 0
|
| 716 |
|
|
printk("RX pkt type 0x%04x from ",
|
| 717 |
|
|
((u_short *)skb->data)[6]);
|
| 718 |
|
|
{
|
| 719 |
|
|
int i;
|
| 720 |
|
|
u_char *ptr = &((u_char *)skb->data)[6];
|
| 721 |
|
|
for (i = 0; i < 6; i++)
|
| 722 |
|
|
printk("%02x", ptr[i]);
|
| 723 |
|
|
}
|
| 724 |
|
|
printk(" to ");
|
| 725 |
|
|
{
|
| 726 |
|
|
int i;
|
| 727 |
|
|
u_char *ptr = (u_char *)skb->data;
|
| 728 |
|
|
for (i = 0; i < 6; i++)
|
| 729 |
|
|
printk("%02x", ptr[i]);
|
| 730 |
|
|
}
|
| 731 |
|
|
printk(" data 0x%08x len %d\n",
|
| 732 |
|
|
(int)skb->data, (int)skb->len);
|
| 733 |
|
|
#endif
|
| 734 |
|
|
|
| 735 |
|
|
netif_rx(skb);
|
| 736 |
|
|
priv->stats.rx_packets++;
|
| 737 |
|
|
}
|
| 738 |
|
|
}
|
| 739 |
|
|
priv->rx_ring[entry]->RMD1 |= RF_OWN;
|
| 740 |
|
|
entry = (++priv->cur_rx) % RX_RING_SIZE;
|
| 741 |
|
|
}
|
| 742 |
|
|
|
| 743 |
|
|
priv->cur_rx = priv->cur_rx % RX_RING_SIZE;
|
| 744 |
|
|
|
| 745 |
|
|
/* We should check that at least two ring entries are free.
|
| 746 |
|
|
If not, we should free one and mark stats->rx_dropped++. */
|
| 747 |
|
|
|
| 748 |
|
|
return(0);
|
| 749 |
|
|
}
|
| 750 |
|
|
|
| 751 |
|
|
|
| 752 |
|
|
static struct enet_statistics *a2065_get_stats(struct device *dev)
|
| 753 |
|
|
{
|
| 754 |
|
|
struct a2065_private *priv = (struct a2065_private *)dev->priv;
|
| 755 |
|
|
|
| 756 |
|
|
return(&priv->stats);
|
| 757 |
|
|
}
|
| 758 |
|
|
|
| 759 |
|
|
|
| 760 |
|
|
/* Set or clear the multicast filter for this adaptor.
|
| 761 |
|
|
*/
|
| 762 |
|
|
static void set_multicast_list(struct device *dev)
|
| 763 |
|
|
{
|
| 764 |
|
|
struct a2065_private *priv = (struct a2065_private *)dev->priv;
|
| 765 |
|
|
struct A2065Board *board = priv->board;
|
| 766 |
|
|
struct lancedata *alancedata; /* Amiga point of view */
|
| 767 |
|
|
alancedata = (struct lancedata *)board->RAM;
|
| 768 |
|
|
|
| 769 |
|
|
/* We take the simple way out and always enable promiscuous mode. */
|
| 770 |
|
|
board->Lance.RAP = CSR0; /* LANCE Controller Status */
|
| 771 |
|
|
board->Lance.RDP = STOP; /* Temporarily stop the lance. */
|
| 772 |
|
|
|
| 773 |
|
|
/* Enable big endian byte ordering */
|
| 774 |
|
|
board->Lance.RAP = CSR3; /* CSR3 */
|
| 775 |
|
|
board->Lance.RDP = BSWP;
|
| 776 |
|
|
|
| 777 |
|
|
if (dev->flags&IFF_PROMISC) {
|
| 778 |
|
|
/* Log any net taps. */
|
| 779 |
|
|
printk("%s: Promiscuous mode enabled.\n", dev->name);
|
| 780 |
|
|
alancedata->init.Mode = PROM; /* Set promiscuous mode */
|
| 781 |
|
|
} else {
|
| 782 |
|
|
short multicast_table[4];
|
| 783 |
|
|
int num_addrs=dev->mc_count;
|
| 784 |
|
|
if(dev->flags&IFF_ALLMULTI)
|
| 785 |
|
|
num_addrs=1;
|
| 786 |
|
|
/*
|
| 787 |
|
|
* We don't use the multicast table,
|
| 788 |
|
|
* but rely on upper-layer filtering.
|
| 789 |
|
|
*/
|
| 790 |
|
|
memset(multicast_table, (num_addrs == 0) ? 0 : -1,
|
| 791 |
|
|
sizeof(multicast_table));
|
| 792 |
|
|
alancedata->init.LADRF[0] = multicast_table[0]<<16 |
|
| 793 |
|
|
multicast_table[1];
|
| 794 |
|
|
alancedata->init.LADRF[1] = multicast_table[2]<<16 |
|
| 795 |
|
|
multicast_table[3];
|
| 796 |
|
|
alancedata->init.Mode = 0x0000;
|
| 797 |
|
|
}
|
| 798 |
|
|
|
| 799 |
|
|
board->Lance.RAP = CSR0; /* LANCE Controller Status */
|
| 800 |
|
|
board->Lance.RDP = INEA|STRT|IDON|INIT; /* Resume normal operation. */
|
| 801 |
|
|
}
|
| 802 |
|
|
|
| 803 |
|
|
|
| 804 |
|
|
#ifdef MODULE
|
| 805 |
|
|
static char devicename[9] = { 0, };
|
| 806 |
|
|
|
| 807 |
|
|
static struct device a2065_dev =
|
| 808 |
|
|
{
|
| 809 |
|
|
devicename, /* filled in by register_netdev() */
|
| 810 |
|
|
0, 0, 0, 0, /* memory */
|
| 811 |
|
|
0, 0, /* base, irq */
|
| 812 |
|
|
0, 0, 0, NULL, a2065_probe,
|
| 813 |
|
|
};
|
| 814 |
|
|
|
| 815 |
|
|
int init_module(void)
|
| 816 |
|
|
{
|
| 817 |
|
|
int err;
|
| 818 |
|
|
|
| 819 |
|
|
if ((err = register_netdev(&a2065_dev))) {
|
| 820 |
|
|
if (err == -EIO)
|
| 821 |
|
|
printk("No A2065 board found. Module not loaded.\n");
|
| 822 |
|
|
return(err);
|
| 823 |
|
|
}
|
| 824 |
|
|
return(0);
|
| 825 |
|
|
}
|
| 826 |
|
|
|
| 827 |
|
|
void cleanup_module(void)
|
| 828 |
|
|
{
|
| 829 |
|
|
struct a2065_private *priv = (struct a2065_private *)a2065_dev.priv;
|
| 830 |
|
|
|
| 831 |
|
|
unregister_netdev(&a2065_dev);
|
| 832 |
|
|
zorro_unconfig_board(priv->key, 0);
|
| 833 |
|
|
kfree(priv);
|
| 834 |
|
|
}
|
| 835 |
|
|
|
| 836 |
|
|
#endif /* MODULE */
|
