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![Jarod Wilson](/assets/img/avatar_default.png)
With centralized MTU checking, there's nothing productive done by eth_change_mtu that isn't already done in dev_set_mtu, so mark it as deprecated and remove all usage of it in the kernel. All callers have been audited for calls to alloc_etherdev* or ether_setup directly, which means they all have a valid dev->min_mtu and dev->max_mtu. Now eth_change_mtu prints out a netdev_warn about being deprecated, for the benefit of out-of-tree drivers that might be utilizing it. Of note, dvb_net.c actually had dev->mtu = 4096, while using eth_change_mtu, meaning that if you ever tried changing it's mtu, you couldn't set it above 1500 anymore. It's now getting dev->max_mtu also set to 4096 to remedy that. v2: fix up lantiq_etop, missed breakage due to drive not compiling on x86 CC: netdev@vger.kernel.org Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
791 lines
22 KiB
C
791 lines
22 KiB
C
/*
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* Amiga Linux/m68k Ariadne Ethernet Driver
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*
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* © Copyright 1995-2003 by Geert Uytterhoeven (geert@linux-m68k.org)
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* Peter De Schrijver (p2@mind.be)
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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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* 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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* MC68230: Parallel Interface/Timer (PI/T)
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* Motorola Semiconductors, December, 1983
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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 Ariadne is a Zorro-II board made by Village Tronic. It contains:
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*
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* - an Am79C960 PCnet-ISA Single-Chip Ethernet Controller with both
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* 10BASE-2 (thin coax) and 10BASE-T (UTP) connectors
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*
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* - an MC68230 Parallel Interface/Timer configured as 2 parallel ports
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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/*#define DEBUG*/
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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/string.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/interrupt.h>
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#include <linux/skbuff.h>
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#include <linux/init.h>
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#include <linux/zorro.h>
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#include <linux/bitops.h>
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#include <asm/byteorder.h>
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#include <asm/amigaints.h>
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#include <asm/amigahw.h>
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#include <asm/irq.h>
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#include "ariadne.h"
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#ifdef ARIADNE_DEBUG
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int ariadne_debug = ARIADNE_DEBUG;
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#else
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int ariadne_debug = 1;
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#endif
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/* Macros to Fix Endianness problems */
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/* Swap the Bytes in a WORD */
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#define swapw(x) (((x >> 8) & 0x00ff) | ((x << 8) & 0xff00))
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/* Get the Low BYTE in a WORD */
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#define lowb(x) (x & 0xff)
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/* Get the Swapped High WORD in a LONG */
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#define swhighw(x) ((((x) >> 8) & 0xff00) | (((x) >> 24) & 0x00ff))
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/* Get the Swapped Low WORD in a LONG */
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#define swloww(x) ((((x) << 8) & 0xff00) | (((x) >> 8) & 0x00ff))
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/* Transmit/Receive Ring Definitions */
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#define TX_RING_SIZE 5
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#define RX_RING_SIZE 16
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#define PKT_BUF_SIZE 1520
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/* Private Device Data */
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struct ariadne_private {
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volatile struct TDRE *tx_ring[TX_RING_SIZE];
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volatile struct RDRE *rx_ring[RX_RING_SIZE];
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volatile u_short *tx_buff[TX_RING_SIZE];
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volatile u_short *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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char tx_full;
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};
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/* Structure Created in the Ariadne's RAM Buffer */
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struct lancedata {
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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_short tx_buff[TX_RING_SIZE][PKT_BUF_SIZE / sizeof(u_short)];
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u_short rx_buff[RX_RING_SIZE][PKT_BUF_SIZE / sizeof(u_short)];
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};
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static void memcpyw(volatile u_short *dest, u_short *src, int len)
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{
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while (len >= 2) {
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*(dest++) = *(src++);
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len -= 2;
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}
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if (len == 1)
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*dest = (*(u_char *)src) << 8;
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}
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static void ariadne_init_ring(struct net_device *dev)
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{
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struct ariadne_private *priv = netdev_priv(dev);
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volatile struct lancedata *lancedata = (struct lancedata *)dev->mem_start;
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int i;
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netif_stop_queue(dev);
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priv->tx_full = 0;
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priv->cur_rx = priv->cur_tx = 0;
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priv->dirty_tx = 0;
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/* Set up TX Ring */
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for (i = 0; i < TX_RING_SIZE; i++) {
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volatile struct TDRE *t = &lancedata->tx_ring[i];
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t->TMD0 = swloww(ARIADNE_RAM +
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offsetof(struct lancedata, tx_buff[i]));
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t->TMD1 = swhighw(ARIADNE_RAM +
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offsetof(struct lancedata, tx_buff[i])) |
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TF_STP | TF_ENP;
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t->TMD2 = swapw((u_short)-PKT_BUF_SIZE);
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t->TMD3 = 0;
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priv->tx_ring[i] = &lancedata->tx_ring[i];
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priv->tx_buff[i] = lancedata->tx_buff[i];
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netdev_dbg(dev, "TX Entry %2d at %p, Buf at %p\n",
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i, &lancedata->tx_ring[i], lancedata->tx_buff[i]);
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}
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/* Set up RX Ring */
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for (i = 0; i < RX_RING_SIZE; i++) {
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volatile struct RDRE *r = &lancedata->rx_ring[i];
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r->RMD0 = swloww(ARIADNE_RAM +
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offsetof(struct lancedata, rx_buff[i]));
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r->RMD1 = swhighw(ARIADNE_RAM +
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offsetof(struct lancedata, rx_buff[i])) |
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RF_OWN;
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r->RMD2 = swapw((u_short)-PKT_BUF_SIZE);
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r->RMD3 = 0x0000;
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priv->rx_ring[i] = &lancedata->rx_ring[i];
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priv->rx_buff[i] = lancedata->rx_buff[i];
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netdev_dbg(dev, "RX Entry %2d at %p, Buf at %p\n",
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i, &lancedata->rx_ring[i], lancedata->rx_buff[i]);
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}
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}
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static int ariadne_rx(struct net_device *dev)
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{
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struct ariadne_private *priv = netdev_priv(dev);
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int entry = priv->cur_rx % RX_RING_SIZE;
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int i;
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/* If we own the next entry, it's a new packet. Send it up */
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while (!(lowb(priv->rx_ring[entry]->RMD1) & RF_OWN)) {
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int status = lowb(priv->rx_ring[entry]->RMD1);
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if (status != (RF_STP | RF_ENP)) { /* There was an error */
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/* There is a tricky error noted by
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* John Murphy <murf@perftech.com> to Russ Nelson:
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* Even with full-sized buffers it's possible for a
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* jabber packet to use two buffers, with only the
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* last correctly noting the error
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*/
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/* Only count a general error at the end of a packet */
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if (status & RF_ENP)
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dev->stats.rx_errors++;
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if (status & RF_FRAM)
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dev->stats.rx_frame_errors++;
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if (status & RF_OFLO)
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dev->stats.rx_over_errors++;
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if (status & RF_CRC)
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dev->stats.rx_crc_errors++;
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if (status & RF_BUFF)
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dev->stats.rx_fifo_errors++;
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priv->rx_ring[entry]->RMD1 &= 0xff00 | RF_STP | RF_ENP;
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} else {
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/* Malloc up new buffer, compatible with net-3 */
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short pkt_len = swapw(priv->rx_ring[entry]->RMD3);
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struct sk_buff *skb;
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skb = netdev_alloc_skb(dev, pkt_len + 2);
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if (skb == NULL) {
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for (i = 0; i < RX_RING_SIZE; i++)
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if (lowb(priv->rx_ring[(entry + i) % RX_RING_SIZE]->RMD1) & RF_OWN)
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break;
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if (i > RX_RING_SIZE - 2) {
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dev->stats.rx_dropped++;
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priv->rx_ring[entry]->RMD1 |= RF_OWN;
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priv->cur_rx++;
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}
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break;
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}
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skb_reserve(skb, 2); /* 16 byte align */
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skb_put(skb, pkt_len); /* Make room */
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skb_copy_to_linear_data(skb,
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(const void *)priv->rx_buff[entry],
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pkt_len);
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skb->protocol = eth_type_trans(skb, dev);
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netdev_dbg(dev, "RX pkt type 0x%04x from %pM to %pM data %p len %u\n",
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((u_short *)skb->data)[6],
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skb->data + 6, skb->data,
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skb->data, skb->len);
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netif_rx(skb);
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dev->stats.rx_packets++;
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dev->stats.rx_bytes += pkt_len;
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}
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priv->rx_ring[entry]->RMD1 |= RF_OWN;
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entry = (++priv->cur_rx) % RX_RING_SIZE;
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}
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priv->cur_rx = priv->cur_rx % RX_RING_SIZE;
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/* We should check that at least two ring entries are free.
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* If not, we should free one and mark stats->rx_dropped++
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*/
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return 0;
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}
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static irqreturn_t ariadne_interrupt(int irq, void *data)
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{
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struct net_device *dev = (struct net_device *)data;
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volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr;
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struct ariadne_private *priv;
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int csr0, boguscnt;
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int handled = 0;
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lance->RAP = CSR0; /* PCnet-ISA Controller Status */
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if (!(lance->RDP & INTR)) /* Check if any interrupt has been */
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return IRQ_NONE; /* generated by the board */
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priv = netdev_priv(dev);
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boguscnt = 10;
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while ((csr0 = lance->RDP) & (ERR | RINT | TINT) && --boguscnt >= 0) {
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/* Acknowledge all of the current interrupt sources ASAP */
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lance->RDP = csr0 & ~(INEA | TDMD | STOP | STRT | INIT);
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#ifdef DEBUG
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if (ariadne_debug > 5) {
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netdev_dbg(dev, "interrupt csr0=%#02x new csr=%#02x [",
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csr0, lance->RDP);
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if (csr0 & INTR)
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pr_cont(" INTR");
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if (csr0 & INEA)
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pr_cont(" INEA");
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if (csr0 & RXON)
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pr_cont(" RXON");
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if (csr0 & TXON)
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pr_cont(" TXON");
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if (csr0 & TDMD)
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pr_cont(" TDMD");
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if (csr0 & STOP)
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pr_cont(" STOP");
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if (csr0 & STRT)
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pr_cont(" STRT");
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if (csr0 & INIT)
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pr_cont(" INIT");
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if (csr0 & ERR)
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pr_cont(" ERR");
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if (csr0 & BABL)
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pr_cont(" BABL");
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if (csr0 & CERR)
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pr_cont(" CERR");
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if (csr0 & MISS)
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pr_cont(" MISS");
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if (csr0 & MERR)
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pr_cont(" MERR");
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if (csr0 & RINT)
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pr_cont(" RINT");
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if (csr0 & TINT)
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pr_cont(" TINT");
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if (csr0 & IDON)
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pr_cont(" IDON");
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pr_cont(" ]\n");
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}
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#endif
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if (csr0 & RINT) { /* Rx interrupt */
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handled = 1;
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ariadne_rx(dev);
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}
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if (csr0 & TINT) { /* Tx-done interrupt */
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int dirty_tx = priv->dirty_tx;
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handled = 1;
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while (dirty_tx < priv->cur_tx) {
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int entry = dirty_tx % TX_RING_SIZE;
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int status = lowb(priv->tx_ring[entry]->TMD1);
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if (status & TF_OWN)
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break; /* It still hasn't been Txed */
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priv->tx_ring[entry]->TMD1 &= 0xff00;
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if (status & TF_ERR) {
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/* There was an major error, log it */
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int err_status = priv->tx_ring[entry]->TMD3;
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dev->stats.tx_errors++;
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if (err_status & EF_RTRY)
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dev->stats.tx_aborted_errors++;
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if (err_status & EF_LCAR)
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dev->stats.tx_carrier_errors++;
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if (err_status & EF_LCOL)
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dev->stats.tx_window_errors++;
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if (err_status & EF_UFLO) {
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/* Ackk! On FIFO errors the Tx unit is turned off! */
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dev->stats.tx_fifo_errors++;
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/* Remove this verbosity later! */
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netdev_err(dev, "Tx FIFO error! Status %04x\n",
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csr0);
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/* Restart the chip */
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lance->RDP = STRT;
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}
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} else {
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if (status & (TF_MORE | TF_ONE))
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dev->stats.collisions++;
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dev->stats.tx_packets++;
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}
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dirty_tx++;
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}
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#ifndef final_version
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if (priv->cur_tx - dirty_tx >= TX_RING_SIZE) {
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netdev_err(dev, "out-of-sync dirty pointer, %d vs. %d, full=%d\n",
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dirty_tx, priv->cur_tx,
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priv->tx_full);
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dirty_tx += TX_RING_SIZE;
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}
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#endif
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if (priv->tx_full && netif_queue_stopped(dev) &&
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dirty_tx > priv->cur_tx - TX_RING_SIZE + 2) {
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/* The ring is no longer full */
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priv->tx_full = 0;
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netif_wake_queue(dev);
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}
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priv->dirty_tx = dirty_tx;
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}
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/* Log misc errors */
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if (csr0 & BABL) {
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handled = 1;
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dev->stats.tx_errors++; /* Tx babble */
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}
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if (csr0 & MISS) {
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handled = 1;
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dev->stats.rx_errors++; /* Missed a Rx frame */
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}
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if (csr0 & MERR) {
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handled = 1;
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netdev_err(dev, "Bus master arbitration failure, status %04x\n",
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csr0);
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/* Restart the chip */
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lance->RDP = STRT;
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}
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}
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/* Clear any other interrupt, and set interrupt enable */
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lance->RAP = CSR0; /* PCnet-ISA Controller Status */
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lance->RDP = INEA | BABL | CERR | MISS | MERR | IDON;
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if (ariadne_debug > 4)
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netdev_dbg(dev, "exiting interrupt, csr%d=%#04x\n",
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lance->RAP, lance->RDP);
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return IRQ_RETVAL(handled);
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}
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static int ariadne_open(struct net_device *dev)
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{
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volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr;
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u_short in;
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u_long version;
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int i;
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/* Reset the LANCE */
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in = lance->Reset;
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/* Stop the LANCE */
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lance->RAP = CSR0; /* PCnet-ISA Controller Status */
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lance->RDP = STOP;
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/* Check the LANCE version */
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lance->RAP = CSR88; /* Chip ID */
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version = swapw(lance->RDP);
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lance->RAP = CSR89; /* Chip ID */
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version |= swapw(lance->RDP) << 16;
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if ((version & 0x00000fff) != 0x00000003) {
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pr_warn("Couldn't find AMD Ethernet Chip\n");
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return -EAGAIN;
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}
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if ((version & 0x0ffff000) != 0x00003000) {
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pr_warn("Couldn't find Am79C960 (Wrong part number = %ld)\n",
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(version & 0x0ffff000) >> 12);
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return -EAGAIN;
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}
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netdev_dbg(dev, "Am79C960 (PCnet-ISA) Revision %ld\n",
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(version & 0xf0000000) >> 28);
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ariadne_init_ring(dev);
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/* Miscellaneous Stuff */
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lance->RAP = CSR3; /* Interrupt Masks and Deferral Control */
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lance->RDP = 0x0000;
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lance->RAP = CSR4; /* Test and Features Control */
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lance->RDP = DPOLL | APAD_XMT | MFCOM | RCVCCOM | TXSTRTM | JABM;
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/* Set the Multicast Table */
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lance->RAP = CSR8; /* Logical Address Filter, LADRF[15:0] */
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lance->RDP = 0x0000;
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lance->RAP = CSR9; /* Logical Address Filter, LADRF[31:16] */
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lance->RDP = 0x0000;
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lance->RAP = CSR10; /* Logical Address Filter, LADRF[47:32] */
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lance->RDP = 0x0000;
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lance->RAP = CSR11; /* Logical Address Filter, LADRF[63:48] */
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lance->RDP = 0x0000;
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/* Set the Ethernet Hardware Address */
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lance->RAP = CSR12; /* Physical Address Register, PADR[15:0] */
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lance->RDP = ((u_short *)&dev->dev_addr[0])[0];
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lance->RAP = CSR13; /* Physical Address Register, PADR[31:16] */
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lance->RDP = ((u_short *)&dev->dev_addr[0])[1];
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lance->RAP = CSR14; /* Physical Address Register, PADR[47:32] */
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lance->RDP = ((u_short *)&dev->dev_addr[0])[2];
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/* Set the Init Block Mode */
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lance->RAP = CSR15; /* Mode Register */
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lance->RDP = 0x0000;
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/* Set the Transmit Descriptor Ring Pointer */
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lance->RAP = CSR30; /* Base Address of Transmit Ring */
|
|
lance->RDP = swloww(ARIADNE_RAM + offsetof(struct lancedata, tx_ring));
|
|
lance->RAP = CSR31; /* Base Address of transmit Ring */
|
|
lance->RDP = swhighw(ARIADNE_RAM + offsetof(struct lancedata, tx_ring));
|
|
|
|
/* Set the Receive Descriptor Ring Pointer */
|
|
lance->RAP = CSR24; /* Base Address of Receive Ring */
|
|
lance->RDP = swloww(ARIADNE_RAM + offsetof(struct lancedata, rx_ring));
|
|
lance->RAP = CSR25; /* Base Address of Receive Ring */
|
|
lance->RDP = swhighw(ARIADNE_RAM + offsetof(struct lancedata, rx_ring));
|
|
|
|
/* Set the Number of RX and TX Ring Entries */
|
|
lance->RAP = CSR76; /* Receive Ring Length */
|
|
lance->RDP = swapw(((u_short)-RX_RING_SIZE));
|
|
lance->RAP = CSR78; /* Transmit Ring Length */
|
|
lance->RDP = swapw(((u_short)-TX_RING_SIZE));
|
|
|
|
/* Enable Media Interface Port Auto Select (10BASE-2/10BASE-T) */
|
|
lance->RAP = ISACSR2; /* Miscellaneous Configuration */
|
|
lance->IDP = ASEL;
|
|
|
|
/* LED Control */
|
|
lance->RAP = ISACSR5; /* LED1 Status */
|
|
lance->IDP = PSE|XMTE;
|
|
lance->RAP = ISACSR6; /* LED2 Status */
|
|
lance->IDP = PSE|COLE;
|
|
lance->RAP = ISACSR7; /* LED3 Status */
|
|
lance->IDP = PSE|RCVE;
|
|
|
|
netif_start_queue(dev);
|
|
|
|
i = request_irq(IRQ_AMIGA_PORTS, ariadne_interrupt, IRQF_SHARED,
|
|
dev->name, dev);
|
|
if (i)
|
|
return i;
|
|
|
|
lance->RAP = CSR0; /* PCnet-ISA Controller Status */
|
|
lance->RDP = INEA | STRT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ariadne_close(struct net_device *dev)
|
|
{
|
|
volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr;
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
lance->RAP = CSR112; /* Missed Frame Count */
|
|
dev->stats.rx_missed_errors = swapw(lance->RDP);
|
|
lance->RAP = CSR0; /* PCnet-ISA Controller Status */
|
|
|
|
if (ariadne_debug > 1) {
|
|
netdev_dbg(dev, "Shutting down ethercard, status was %02x\n",
|
|
lance->RDP);
|
|
netdev_dbg(dev, "%lu packets missed\n",
|
|
dev->stats.rx_missed_errors);
|
|
}
|
|
|
|
/* We stop the LANCE here -- it occasionally polls memory if we don't */
|
|
lance->RDP = STOP;
|
|
|
|
free_irq(IRQ_AMIGA_PORTS, dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline void ariadne_reset(struct net_device *dev)
|
|
{
|
|
volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr;
|
|
|
|
lance->RAP = CSR0; /* PCnet-ISA Controller Status */
|
|
lance->RDP = STOP;
|
|
ariadne_init_ring(dev);
|
|
lance->RDP = INEA | STRT;
|
|
netif_start_queue(dev);
|
|
}
|
|
|
|
static void ariadne_tx_timeout(struct net_device *dev)
|
|
{
|
|
volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr;
|
|
|
|
netdev_err(dev, "transmit timed out, status %04x, resetting\n",
|
|
lance->RDP);
|
|
ariadne_reset(dev);
|
|
netif_wake_queue(dev);
|
|
}
|
|
|
|
static netdev_tx_t ariadne_start_xmit(struct sk_buff *skb,
|
|
struct net_device *dev)
|
|
{
|
|
struct ariadne_private *priv = netdev_priv(dev);
|
|
volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr;
|
|
int entry;
|
|
unsigned long flags;
|
|
int len = skb->len;
|
|
|
|
#if 0
|
|
if (ariadne_debug > 3) {
|
|
lance->RAP = CSR0; /* PCnet-ISA Controller Status */
|
|
netdev_dbg(dev, "%s: csr0 %04x\n", __func__, lance->RDP);
|
|
lance->RDP = 0x0000;
|
|
}
|
|
#endif
|
|
|
|
/* FIXME: is the 79C960 new enough to do its own padding right ? */
|
|
if (skb->len < ETH_ZLEN) {
|
|
if (skb_padto(skb, ETH_ZLEN))
|
|
return NETDEV_TX_OK;
|
|
len = ETH_ZLEN;
|
|
}
|
|
|
|
/* Fill in a Tx ring entry */
|
|
|
|
netdev_dbg(dev, "TX pkt type 0x%04x from %pM to %pM data %p len %u\n",
|
|
((u_short *)skb->data)[6],
|
|
skb->data + 6, skb->data,
|
|
skb->data, skb->len);
|
|
|
|
local_irq_save(flags);
|
|
|
|
entry = priv->cur_tx % TX_RING_SIZE;
|
|
|
|
/* Caution: the write order is important here, set the base address with
|
|
the "ownership" bits last */
|
|
|
|
priv->tx_ring[entry]->TMD2 = swapw((u_short)-skb->len);
|
|
priv->tx_ring[entry]->TMD3 = 0x0000;
|
|
memcpyw(priv->tx_buff[entry], (u_short *)skb->data, len);
|
|
|
|
#ifdef DEBUG
|
|
print_hex_dump(KERN_DEBUG, "tx_buff: ", DUMP_PREFIX_OFFSET, 16, 1,
|
|
(void *)priv->tx_buff[entry],
|
|
skb->len > 64 ? 64 : skb->len, true);
|
|
#endif
|
|
|
|
priv->tx_ring[entry]->TMD1 = (priv->tx_ring[entry]->TMD1 & 0xff00)
|
|
| TF_OWN | TF_STP | TF_ENP;
|
|
|
|
dev_kfree_skb(skb);
|
|
|
|
priv->cur_tx++;
|
|
if ((priv->cur_tx >= TX_RING_SIZE) &&
|
|
(priv->dirty_tx >= TX_RING_SIZE)) {
|
|
|
|
netdev_dbg(dev, "*** Subtracting TX_RING_SIZE from cur_tx (%d) and dirty_tx (%d)\n",
|
|
priv->cur_tx, priv->dirty_tx);
|
|
|
|
priv->cur_tx -= TX_RING_SIZE;
|
|
priv->dirty_tx -= TX_RING_SIZE;
|
|
}
|
|
dev->stats.tx_bytes += len;
|
|
|
|
/* Trigger an immediate send poll */
|
|
lance->RAP = CSR0; /* PCnet-ISA Controller Status */
|
|
lance->RDP = INEA | TDMD;
|
|
|
|
if (lowb(priv->tx_ring[(entry + 1) % TX_RING_SIZE]->TMD1) != 0) {
|
|
netif_stop_queue(dev);
|
|
priv->tx_full = 1;
|
|
}
|
|
local_irq_restore(flags);
|
|
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static struct net_device_stats *ariadne_get_stats(struct net_device *dev)
|
|
{
|
|
volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr;
|
|
short saved_addr;
|
|
unsigned long flags;
|
|
|
|
local_irq_save(flags);
|
|
saved_addr = lance->RAP;
|
|
lance->RAP = CSR112; /* Missed Frame Count */
|
|
dev->stats.rx_missed_errors = swapw(lance->RDP);
|
|
lance->RAP = saved_addr;
|
|
local_irq_restore(flags);
|
|
|
|
return &dev->stats;
|
|
}
|
|
|
|
/* Set or clear the multicast filter for this adaptor.
|
|
* num_addrs == -1 Promiscuous mode, receive all packets
|
|
* num_addrs == 0 Normal mode, clear multicast list
|
|
* num_addrs > 0 Multicast mode, receive normal and MC packets,
|
|
* and do best-effort filtering.
|
|
*/
|
|
static void set_multicast_list(struct net_device *dev)
|
|
{
|
|
volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr;
|
|
|
|
if (!netif_running(dev))
|
|
return;
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
/* We take the simple way out and always enable promiscuous mode */
|
|
lance->RAP = CSR0; /* PCnet-ISA Controller Status */
|
|
lance->RDP = STOP; /* Temporarily stop the lance */
|
|
ariadne_init_ring(dev);
|
|
|
|
if (dev->flags & IFF_PROMISC) {
|
|
lance->RAP = CSR15; /* Mode Register */
|
|
lance->RDP = PROM; /* Set promiscuous mode */
|
|
} else {
|
|
short multicast_table[4];
|
|
int num_addrs = netdev_mc_count(dev);
|
|
int i;
|
|
/* We don't use the multicast table,
|
|
* but rely on upper-layer filtering
|
|
*/
|
|
memset(multicast_table, (num_addrs == 0) ? 0 : -1,
|
|
sizeof(multicast_table));
|
|
for (i = 0; i < 4; i++) {
|
|
lance->RAP = CSR8 + (i << 8);
|
|
/* Logical Address Filter */
|
|
lance->RDP = swapw(multicast_table[i]);
|
|
}
|
|
lance->RAP = CSR15; /* Mode Register */
|
|
lance->RDP = 0x0000; /* Unset promiscuous mode */
|
|
}
|
|
|
|
lance->RAP = CSR0; /* PCnet-ISA Controller Status */
|
|
lance->RDP = INEA | STRT | IDON;/* Resume normal operation */
|
|
|
|
netif_wake_queue(dev);
|
|
}
|
|
|
|
|
|
static void ariadne_remove_one(struct zorro_dev *z)
|
|
{
|
|
struct net_device *dev = zorro_get_drvdata(z);
|
|
|
|
unregister_netdev(dev);
|
|
release_mem_region(ZTWO_PADDR(dev->base_addr), sizeof(struct Am79C960));
|
|
release_mem_region(ZTWO_PADDR(dev->mem_start), ARIADNE_RAM_SIZE);
|
|
free_netdev(dev);
|
|
}
|
|
|
|
static struct zorro_device_id ariadne_zorro_tbl[] = {
|
|
{ ZORRO_PROD_VILLAGE_TRONIC_ARIADNE },
|
|
{ 0 }
|
|
};
|
|
MODULE_DEVICE_TABLE(zorro, ariadne_zorro_tbl);
|
|
|
|
static const struct net_device_ops ariadne_netdev_ops = {
|
|
.ndo_open = ariadne_open,
|
|
.ndo_stop = ariadne_close,
|
|
.ndo_start_xmit = ariadne_start_xmit,
|
|
.ndo_tx_timeout = ariadne_tx_timeout,
|
|
.ndo_get_stats = ariadne_get_stats,
|
|
.ndo_set_rx_mode = set_multicast_list,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_set_mac_address = eth_mac_addr,
|
|
};
|
|
|
|
static int ariadne_init_one(struct zorro_dev *z,
|
|
const struct zorro_device_id *ent)
|
|
{
|
|
unsigned long board = z->resource.start;
|
|
unsigned long base_addr = board + ARIADNE_LANCE;
|
|
unsigned long mem_start = board + ARIADNE_RAM;
|
|
struct resource *r1, *r2;
|
|
struct net_device *dev;
|
|
u32 serial;
|
|
int err;
|
|
|
|
r1 = request_mem_region(base_addr, sizeof(struct Am79C960), "Am79C960");
|
|
if (!r1)
|
|
return -EBUSY;
|
|
r2 = request_mem_region(mem_start, ARIADNE_RAM_SIZE, "RAM");
|
|
if (!r2) {
|
|
release_mem_region(base_addr, sizeof(struct Am79C960));
|
|
return -EBUSY;
|
|
}
|
|
|
|
dev = alloc_etherdev(sizeof(struct ariadne_private));
|
|
if (dev == NULL) {
|
|
release_mem_region(base_addr, sizeof(struct Am79C960));
|
|
release_mem_region(mem_start, ARIADNE_RAM_SIZE);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
r1->name = dev->name;
|
|
r2->name = dev->name;
|
|
|
|
serial = be32_to_cpu(z->rom.er_SerialNumber);
|
|
dev->dev_addr[0] = 0x00;
|
|
dev->dev_addr[1] = 0x60;
|
|
dev->dev_addr[2] = 0x30;
|
|
dev->dev_addr[3] = (serial >> 16) & 0xff;
|
|
dev->dev_addr[4] = (serial >> 8) & 0xff;
|
|
dev->dev_addr[5] = serial & 0xff;
|
|
dev->base_addr = (unsigned long)ZTWO_VADDR(base_addr);
|
|
dev->mem_start = (unsigned long)ZTWO_VADDR(mem_start);
|
|
dev->mem_end = dev->mem_start + ARIADNE_RAM_SIZE;
|
|
|
|
dev->netdev_ops = &ariadne_netdev_ops;
|
|
dev->watchdog_timeo = 5 * HZ;
|
|
|
|
err = register_netdev(dev);
|
|
if (err) {
|
|
release_mem_region(base_addr, sizeof(struct Am79C960));
|
|
release_mem_region(mem_start, ARIADNE_RAM_SIZE);
|
|
free_netdev(dev);
|
|
return err;
|
|
}
|
|
zorro_set_drvdata(z, dev);
|
|
|
|
netdev_info(dev, "Ariadne at 0x%08lx, Ethernet Address %pM\n",
|
|
board, dev->dev_addr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct zorro_driver ariadne_driver = {
|
|
.name = "ariadne",
|
|
.id_table = ariadne_zorro_tbl,
|
|
.probe = ariadne_init_one,
|
|
.remove = ariadne_remove_one,
|
|
};
|
|
|
|
static int __init ariadne_init_module(void)
|
|
{
|
|
return zorro_register_driver(&ariadne_driver);
|
|
}
|
|
|
|
static void __exit ariadne_cleanup_module(void)
|
|
{
|
|
zorro_unregister_driver(&ariadne_driver);
|
|
}
|
|
|
|
module_init(ariadne_init_module);
|
|
module_exit(ariadne_cleanup_module);
|
|
|
|
MODULE_LICENSE("GPL");
|