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Diffstat (limited to 'drivers/net/ariadne.c')
-rw-r--r--drivers/net/ariadne.c863
1 files changed, 0 insertions, 863 deletions
diff --git a/drivers/net/ariadne.c b/drivers/net/ariadne.c
deleted file mode 100644
index 39214e51245..00000000000
--- a/drivers/net/ariadne.c
+++ /dev/null
@@ -1,863 +0,0 @@
-/*
- * Amiga Linux/m68k Ariadne Ethernet Driver
- *
- * © Copyright 1995-2003 by Geert Uytterhoeven (geert@linux-m68k.org)
- * Peter De Schrijver (p2@mind.be)
- *
- * ---------------------------------------------------------------------------
- *
- * This program is based on
- *
- * lance.c: An AMD LANCE ethernet driver for linux.
- * Written 1993-94 by Donald Becker.
- *
- * Am79C960: PCnet(tm)-ISA Single-Chip Ethernet Controller
- * Advanced Micro Devices
- * Publication #16907, Rev. B, Amendment/0, May 1994
- *
- * MC68230: Parallel Interface/Timer (PI/T)
- * Motorola Semiconductors, December, 1983
- *
- * ---------------------------------------------------------------------------
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file COPYING in the main directory of the Linux
- * distribution for more details.
- *
- * ---------------------------------------------------------------------------
- *
- * The Ariadne is a Zorro-II board made by Village Tronic. It contains:
- *
- * - an Am79C960 PCnet-ISA Single-Chip Ethernet Controller with both
- * 10BASE-2 (thin coax) and 10BASE-T (UTP) connectors
- *
- * - an MC68230 Parallel Interface/Timer configured as 2 parallel ports
- */
-
-#include <linux/module.h>
-#include <linux/stddef.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/interrupt.h>
-#include <linux/skbuff.h>
-#include <linux/init.h>
-#include <linux/zorro.h>
-#include <linux/bitops.h>
-
-#include <asm/amigaints.h>
-#include <asm/amigahw.h>
-#include <asm/irq.h>
-
-#include "ariadne.h"
-
-
-#ifdef ARIADNE_DEBUG
-int ariadne_debug = ARIADNE_DEBUG;
-#else
-int ariadne_debug = 1;
-#endif
-
-
- /*
- * Macros to Fix Endianness problems
- */
-
- /* Swap the Bytes in a WORD */
-#define swapw(x) (((x>>8)&0x00ff)|((x<<8)&0xff00))
- /* Get the Low BYTE in a WORD */
-#define lowb(x) (x&0xff)
- /* Get the Swapped High WORD in a LONG */
-#define swhighw(x) ((((x)>>8)&0xff00)|(((x)>>24)&0x00ff))
- /* Get the Swapped Low WORD in a LONG */
-#define swloww(x) ((((x)<<8)&0xff00)|(((x)>>8)&0x00ff))
-
-
- /*
- * Transmit/Receive Ring Definitions
- */
-
-#define TX_RING_SIZE 5
-#define RX_RING_SIZE 16
-
-#define PKT_BUF_SIZE 1520
-
-
- /*
- * Private Device Data
- */
-
-struct ariadne_private {
- volatile struct TDRE *tx_ring[TX_RING_SIZE];
- volatile struct RDRE *rx_ring[RX_RING_SIZE];
- volatile u_short *tx_buff[TX_RING_SIZE];
- volatile u_short *rx_buff[RX_RING_SIZE];
- int cur_tx, cur_rx; /* The next free ring entry */
- int dirty_tx; /* The ring entries to be free()ed. */
- char tx_full;
-};
-
-
- /*
- * Structure Created in the Ariadne's RAM Buffer
- */
-
-struct lancedata {
- struct TDRE tx_ring[TX_RING_SIZE];
- struct RDRE rx_ring[RX_RING_SIZE];
- u_short tx_buff[TX_RING_SIZE][PKT_BUF_SIZE/sizeof(u_short)];
- u_short rx_buff[RX_RING_SIZE][PKT_BUF_SIZE/sizeof(u_short)];
-};
-
-static int ariadne_open(struct net_device *dev);
-static void ariadne_init_ring(struct net_device *dev);
-static netdev_tx_t ariadne_start_xmit(struct sk_buff *skb,
- struct net_device *dev);
-static void ariadne_tx_timeout(struct net_device *dev);
-static int ariadne_rx(struct net_device *dev);
-static void ariadne_reset(struct net_device *dev);
-static irqreturn_t ariadne_interrupt(int irq, void *data);
-static int ariadne_close(struct net_device *dev);
-static struct net_device_stats *ariadne_get_stats(struct net_device *dev);
-static void set_multicast_list(struct net_device *dev);
-
-
-static void memcpyw(volatile u_short *dest, u_short *src, int len)
-{
- while (len >= 2) {
- *(dest++) = *(src++);
- len -= 2;
- }
- if (len == 1)
- *dest = (*(u_char *)src)<<8;
-}
-
-
-static int __devinit ariadne_init_one(struct zorro_dev *z,
- const struct zorro_device_id *ent);
-static void __devexit ariadne_remove_one(struct zorro_dev *z);
-
-
-static struct zorro_device_id ariadne_zorro_tbl[] __devinitdata = {
- { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE },
- { 0 }
-};
-MODULE_DEVICE_TABLE(zorro, ariadne_zorro_tbl);
-
-static struct zorro_driver ariadne_driver = {
- .name = "ariadne",
- .id_table = ariadne_zorro_tbl,
- .probe = ariadne_init_one,
- .remove = __devexit_p(ariadne_remove_one),
-};
-
-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_multicast_list = set_multicast_list,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_set_mac_address = eth_mac_addr,
-};
-
-static int __devinit 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;
- struct ariadne_private *priv;
- 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_resource(r1);
- return -EBUSY;
- }
-
- dev = alloc_etherdev(sizeof(struct ariadne_private));
- if (dev == NULL) {
- release_resource(r1);
- release_resource(r2);
- return -ENOMEM;
- }
-
- priv = netdev_priv(dev);
-
- r1->name = dev->name;
- r2->name = dev->name;
-
- dev->dev_addr[0] = 0x00;
- dev->dev_addr[1] = 0x60;
- dev->dev_addr[2] = 0x30;
- dev->dev_addr[3] = (z->rom.er_SerialNumber>>16) & 0xff;
- dev->dev_addr[4] = (z->rom.er_SerialNumber>>8) & 0xff;
- dev->dev_addr[5] = z->rom.er_SerialNumber & 0xff;
- dev->base_addr = ZTWO_VADDR(base_addr);
- dev->mem_start = 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_resource(r1);
- release_resource(r2);
- free_netdev(dev);
- return err;
- }
- zorro_set_drvdata(z, dev);
-
- printk(KERN_INFO "%s: Ariadne at 0x%08lx, Ethernet Address %pM\n",
- dev->name, board, dev->dev_addr);
-
- return 0;
-}
-
-
-static int ariadne_open(struct net_device *dev)
-{
- volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr;
- u_short in;
- u_long version;
- int i;
-
- /* Reset the LANCE */
- in = lance->Reset;
-
- /* Stop the LANCE */
- lance->RAP = CSR0; /* PCnet-ISA Controller Status */
- lance->RDP = STOP;
-
- /* Check the LANCE version */
- lance->RAP = CSR88; /* Chip ID */
- version = swapw(lance->RDP);
- lance->RAP = CSR89; /* Chip ID */
- version |= swapw(lance->RDP)<<16;
- if ((version & 0x00000fff) != 0x00000003) {
- printk(KERN_WARNING "ariadne_open: Couldn't find AMD Ethernet Chip\n");
- return -EAGAIN;
- }
- if ((version & 0x0ffff000) != 0x00003000) {
- printk(KERN_WARNING "ariadne_open: Couldn't find Am79C960 (Wrong part "
- "number = %ld)\n", (version & 0x0ffff000)>>12);
- return -EAGAIN;
- }
-#if 0
- printk(KERN_DEBUG "ariadne_open: Am79C960 (PCnet-ISA) Revision %ld\n",
- (version & 0xf0000000)>>28);
-#endif
-
- ariadne_init_ring(dev);
-
- /* Miscellaneous Stuff */
- lance->RAP = CSR3; /* Interrupt Masks and Deferral Control */
- lance->RDP = 0x0000;
- lance->RAP = CSR4; /* Test and Features Control */
- lance->RDP = DPOLL|APAD_XMT|MFCOM|RCVCCOM|TXSTRTM|JABM;
-
- /* Set the Multicast Table */
- lance->RAP = CSR8; /* Logical Address Filter, LADRF[15:0] */
- lance->RDP = 0x0000;
- lance->RAP = CSR9; /* Logical Address Filter, LADRF[31:16] */
- lance->RDP = 0x0000;
- lance->RAP = CSR10; /* Logical Address Filter, LADRF[47:32] */
- lance->RDP = 0x0000;
- lance->RAP = CSR11; /* Logical Address Filter, LADRF[63:48] */
- lance->RDP = 0x0000;
-
- /* Set the Ethernet Hardware Address */
- lance->RAP = CSR12; /* Physical Address Register, PADR[15:0] */
- lance->RDP = ((u_short *)&dev->dev_addr[0])[0];
- lance->RAP = CSR13; /* Physical Address Register, PADR[31:16] */
- lance->RDP = ((u_short *)&dev->dev_addr[0])[1];
- lance->RAP = CSR14; /* Physical Address Register, PADR[47:32] */
- lance->RDP = ((u_short *)&dev->dev_addr[0])[2];
-
- /* Set the Init Block Mode */
- lance->RAP = CSR15; /* Mode Register */
- lance->RDP = 0x0000;
-
- /* Set the Transmit Descriptor Ring Pointer */
- 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 void ariadne_init_ring(struct net_device *dev)
-{
- struct ariadne_private *priv = netdev_priv(dev);
- volatile struct lancedata *lancedata = (struct lancedata *)dev->mem_start;
- int i;
-
- netif_stop_queue(dev);
-
- priv->tx_full = 0;
- priv->cur_rx = priv->cur_tx = 0;
- priv->dirty_tx = 0;
-
- /* Set up TX Ring */
- for (i = 0; i < TX_RING_SIZE; i++) {
- volatile struct TDRE *t = &lancedata->tx_ring[i];
- t->TMD0 = swloww(ARIADNE_RAM+offsetof(struct lancedata, tx_buff[i]));
- t->TMD1 = swhighw(ARIADNE_RAM+offsetof(struct lancedata, tx_buff[i])) |
- TF_STP | TF_ENP;
- t->TMD2 = swapw((u_short)-PKT_BUF_SIZE);
- t->TMD3 = 0;
- priv->tx_ring[i] = &lancedata->tx_ring[i];
- priv->tx_buff[i] = lancedata->tx_buff[i];
-#if 0
- printk(KERN_DEBUG "TX Entry %2d at %p, Buf at %p\n", i,
- &lancedata->tx_ring[i], lancedata->tx_buff[i]);
-#endif
- }
-
- /* Set up RX Ring */
- for (i = 0; i < RX_RING_SIZE; i++) {
- volatile struct RDRE *r = &lancedata->rx_ring[i];
- r->RMD0 = swloww(ARIADNE_RAM+offsetof(struct lancedata, rx_buff[i]));
- r->RMD1 = swhighw(ARIADNE_RAM+offsetof(struct lancedata, rx_buff[i])) |
- RF_OWN;
- r->RMD2 = swapw((u_short)-PKT_BUF_SIZE);
- r->RMD3 = 0x0000;
- priv->rx_ring[i] = &lancedata->rx_ring[i];
- priv->rx_buff[i] = lancedata->rx_buff[i];
-#if 0
- printk(KERN_DEBUG "RX Entry %2d at %p, Buf at %p\n", i,
- &lancedata->rx_ring[i], lancedata->rx_buff[i]);
-#endif
- }
-}
-
-
-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) {
- printk(KERN_DEBUG "%s: Shutting down ethercard, status was %2.2x.\n",
- dev->name, lance->RDP);
- printk(KERN_DEBUG "%s: %lu packets missed\n", dev->name,
- 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 irqreturn_t ariadne_interrupt(int irq, void *data)
-{
- struct net_device *dev = (struct net_device *)data;
- volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr;
- struct ariadne_private *priv;
- int csr0, boguscnt;
- int handled = 0;
-
- if (dev == NULL) {
- printk(KERN_WARNING "ariadne_interrupt(): irq for unknown device.\n");
- return IRQ_NONE;
- }
-
- lance->RAP = CSR0; /* PCnet-ISA Controller Status */
-
- if (!(lance->RDP & INTR)) /* Check if any interrupt has been */
- return IRQ_NONE; /* generated by the board. */
-
- priv = netdev_priv(dev);
-
- boguscnt = 10;
- while ((csr0 = lance->RDP) & (ERR|RINT|TINT) && --boguscnt >= 0) {
- /* Acknowledge all of the current interrupt sources ASAP. */
- lance->RDP = csr0 & ~(INEA|TDMD|STOP|STRT|INIT);
-
-#if 0
- if (ariadne_debug > 5) {
- printk(KERN_DEBUG "%s: interrupt csr0=%#2.2x new csr=%#2.2x.",
- dev->name, csr0, lance->RDP);
- printk("[");
- if (csr0 & INTR)
- printk(" INTR");
- if (csr0 & INEA)
- printk(" INEA");
- if (csr0 & RXON)
- printk(" RXON");
- if (csr0 & TXON)
- printk(" TXON");
- if (csr0 & TDMD)
- printk(" TDMD");
- if (csr0 & STOP)
- printk(" STOP");
- if (csr0 & STRT)
- printk(" STRT");
- if (csr0 & INIT)
- printk(" INIT");
- if (csr0 & ERR)
- printk(" ERR");
- if (csr0 & BABL)
- printk(" BABL");
- if (csr0 & CERR)
- printk(" CERR");
- if (csr0 & MISS)
- printk(" MISS");
- if (csr0 & MERR)
- printk(" MERR");
- if (csr0 & RINT)
- printk(" RINT");
- if (csr0 & TINT)
- printk(" TINT");
- if (csr0 & IDON)
- printk(" IDON");
- printk(" ]\n");
- }
-#endif
-
- if (csr0 & RINT) { /* Rx interrupt */
- handled = 1;
- ariadne_rx(dev);
- }
-
- if (csr0 & TINT) { /* Tx-done interrupt */
- int dirty_tx = priv->dirty_tx;
-
- handled = 1;
- while (dirty_tx < priv->cur_tx) {
- int entry = dirty_tx % TX_RING_SIZE;
- int status = lowb(priv->tx_ring[entry]->TMD1);
-
- if (status & TF_OWN)
- break; /* It still hasn't been Txed */
-
- priv->tx_ring[entry]->TMD1 &= 0xff00;
-
- if (status & TF_ERR) {
- /* There was an major error, log it. */
- int err_status = priv->tx_ring[entry]->TMD3;
- dev->stats.tx_errors++;
- if (err_status & EF_RTRY)
- dev->stats.tx_aborted_errors++;
- if (err_status & EF_LCAR)
- dev->stats.tx_carrier_errors++;
- if (err_status & EF_LCOL)
- dev->stats.tx_window_errors++;
- if (err_status & EF_UFLO) {
- /* Ackk! On FIFO errors the Tx unit is turned off! */
- dev->stats.tx_fifo_errors++;
- /* Remove this verbosity later! */
- printk(KERN_ERR "%s: Tx FIFO error! Status %4.4x.\n",
- dev->name, csr0);
- /* Restart the chip. */
- lance->RDP = STRT;
- }
- } else {
- if (status & (TF_MORE|TF_ONE))
- dev->stats.collisions++;
- dev->stats.tx_packets++;
- }
- dirty_tx++;
- }
-
-#ifndef final_version
- if (priv->cur_tx - dirty_tx >= TX_RING_SIZE) {
- printk(KERN_ERR "out-of-sync dirty pointer, %d vs. %d, "
- "full=%d.\n", dirty_tx, priv->cur_tx, priv->tx_full);
- dirty_tx += TX_RING_SIZE;
- }
-#endif
-
- if (priv->tx_full && netif_queue_stopped(dev) &&
- dirty_tx > priv->cur_tx - TX_RING_SIZE + 2) {
- /* The ring is no longer full. */
- priv->tx_full = 0;
- netif_wake_queue(dev);
- }
-
- priv->dirty_tx = dirty_tx;
- }
-
- /* Log misc errors. */
- if (csr0 & BABL) {
- handled = 1;
- dev->stats.tx_errors++; /* Tx babble. */
- }
- if (csr0 & MISS) {
- handled = 1;
- dev->stats.rx_errors++; /* Missed a Rx frame. */
- }
- if (csr0 & MERR) {
- handled = 1;
- printk(KERN_ERR "%s: Bus master arbitration failure, status "
- "%4.4x.\n", dev->name, csr0);
- /* Restart the chip. */
- lance->RDP = STRT;
- }
- }
-
- /* Clear any other interrupt, and set interrupt enable. */
- lance->RAP = CSR0; /* PCnet-ISA Controller Status */
- lance->RDP = INEA|BABL|CERR|MISS|MERR|IDON;
-
-#if 0
- if (ariadne_debug > 4)
- printk(KERN_DEBUG "%s: exiting interrupt, csr%d=%#4.4x.\n", dev->name,
- lance->RAP, lance->RDP);
-#endif
- return IRQ_RETVAL(handled);
-}
-
-
-static void ariadne_tx_timeout(struct net_device *dev)
-{
- volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr;
-
- printk(KERN_ERR "%s: transmit timed out, status %4.4x, resetting.\n",
- dev->name, 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 */
- printk(KERN_DEBUG "%s: ariadne_start_xmit() called, csr0 %4.4x.\n",
- dev->name, 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 */
-
-#if 0
-{
- printk(KERN_DEBUG "TX pkt type 0x%04x from %pM to %pM "
- " data 0x%08x len %d\n",
- ((u_short *)skb->data)[6],
- skb->data + 6, skb->data,
- (int)skb->data, (int)skb->len);
-}
-#endif
-
- 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);
-
-#if 0
- {
- int i, len;
-
- len = skb->len > 64 ? 64 : skb->len;
- len >>= 1;
- for (i = 0; i < len; i += 8) {
- int j;
- printk(KERN_DEBUG "%04x:", i);
- for (j = 0; (j < 8) && ((i+j) < len); j++) {
- if (!(j & 1))
- printk(" ");
- printk("%04x", priv->tx_buff[entry][i+j]);
- }
- printk("\n");
- }
- }
-#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)) {
-
-#if 0
- printk(KERN_DEBUG "*** Subtracting TX_RING_SIZE from cur_tx (%d) and "
- "dirty_tx (%d)\n", priv->cur_tx, priv->dirty_tx);
-#endif
-
- 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 int ariadne_rx(struct net_device *dev)
-{
- struct ariadne_private *priv = netdev_priv(dev);
- int entry = priv->cur_rx % RX_RING_SIZE;
- int i;
-
- /* If we own the next entry, it's a new packet. Send it up. */
- while (!(lowb(priv->rx_ring[entry]->RMD1) & RF_OWN)) {
- int status = lowb(priv->rx_ring[entry]->RMD1);
-
- if (status != (RF_STP|RF_ENP)) { /* There was an error. */
- /* There is a tricky error noted by John Murphy,
- <murf@perftech.com> to Russ Nelson: Even with full-sized
- buffers it's possible for a jabber packet to use two
- buffers, with only the last correctly noting the error. */
- if (status & RF_ENP)
- /* Only count a general error at the end of a packet.*/
- dev->stats.rx_errors++;
- if (status & RF_FRAM)
- dev->stats.rx_frame_errors++;
- if (status & RF_OFLO)
- dev->stats.rx_over_errors++;
- if (status & RF_CRC)
- dev->stats.rx_crc_errors++;
- if (status & RF_BUFF)
- dev->stats.rx_fifo_errors++;
- priv->rx_ring[entry]->RMD1 &= 0xff00|RF_STP|RF_ENP;
- } else {
- /* Malloc up new buffer, compatible with net-3. */
- short pkt_len = swapw(priv->rx_ring[entry]->RMD3);
- struct sk_buff *skb;
-
- skb = dev_alloc_skb(pkt_len+2);
- if (skb == NULL) {
- printk(KERN_WARNING "%s: Memory squeeze, deferring packet.\n",
- dev->name);
- for (i = 0; i < RX_RING_SIZE; i++)
- if (lowb(priv->rx_ring[(entry+i) % RX_RING_SIZE]->RMD1) & RF_OWN)
- break;
-
- if (i > RX_RING_SIZE-2) {
- dev->stats.rx_dropped++;
- priv->rx_ring[entry]->RMD1 |= RF_OWN;
- priv->cur_rx++;
- }
- break;
- }
-
-
- skb_reserve(skb,2); /* 16 byte align */
- skb_put(skb,pkt_len); /* Make room */
- skb_copy_to_linear_data(skb, (char *)priv->rx_buff[entry], pkt_len);
- skb->protocol=eth_type_trans(skb,dev);
-#if 0
-{
- printk(KERN_DEBUG "RX pkt type 0x%04x from ",
- ((u_short *)skb->data)[6]);
- {
- u_char *ptr = &((u_char *)skb->data)[6];
- printk("%pM", ptr);
- }
- printk(" to ");
- {
- u_char *ptr = (u_char *)skb->data;
- printk("%pM", ptr);
- }
- printk(" data 0x%08x len %d\n", (int)skb->data, (int)skb->len);
-}
-#endif
-
- netif_rx(skb);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += pkt_len;
- }
-
- priv->rx_ring[entry]->RMD1 |= RF_OWN;
- entry = (++priv->cur_rx) % RX_RING_SIZE;
- }
-
- priv->cur_rx = priv->cur_rx % RX_RING_SIZE;
-
- /* We should check that at least two ring entries are free. If not,
- we should free one and mark stats->rx_dropped++. */
-
- return 0;
-}
-
-
-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 __devexit 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 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");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 01:21:51 +0000