--- /dev/null
+/*
+ * 7990.c -- LANCE ethernet IC generic routines.
+ * This is an attempt to separate out the bits of various ethernet
+ * drivers that are common because they all use the AMD 7990 LANCE
+ * (Local Area Network Controller for Ethernet) chip.
+ *
+ * Copyright (C) 05/1998 Peter Maydell <pmaydell@chiark.greenend.org.uk>
+ *
+ * Most of this stuff was obtained by looking at other LANCE drivers,
+ * in particular a2065.[ch]. The AMD C-LANCE datasheet was also helpful.
+ * NB: this was made easy by the fact that Jes Sorensen had cleaned up
+ * most of a2025 and sunlance with the aim of merging them, so the
+ * common code was pretty obvious.
+ */
+#include <linux/crc32.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/route.h>
+#include <linux/string.h>
+#include <linux/skbuff.h>
+#include <asm/irq.h>
+/* Used for the temporal inet entries and routing */
+#include <linux/socket.h>
+#include <linux/bitops.h>
+
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/pgtable.h>
+#ifdef CONFIG_HP300
+#include <asm/blinken.h>
+#endif
+
+#include "7990.h"
+
+#define WRITERAP(lp, x) out_be16(lp->base + LANCE_RAP, (x))
+#define WRITERDP(lp, x) out_be16(lp->base + LANCE_RDP, (x))
+#define READRDP(lp) in_be16(lp->base + LANCE_RDP)
+
+#if defined(CONFIG_HPLANCE) || defined(CONFIG_HPLANCE_MODULE)
+#include "hplance.h"
+
+#undef WRITERAP
+#undef WRITERDP
+#undef READRDP
+
+#if defined(CONFIG_MVME147_NET) || defined(CONFIG_MVME147_NET_MODULE)
+
+/* Lossage Factor Nine, Mr Sulu. */
+#define WRITERAP(lp, x) (lp->writerap(lp, x))
+#define WRITERDP(lp, x) (lp->writerdp(lp, x))
+#define READRDP(lp) (lp->readrdp(lp))
+
+#else
+
+/* These inlines can be used if only CONFIG_HPLANCE is defined */
+static inline void WRITERAP(struct lance_private *lp, __u16 value)
+{
+ do {
+ out_be16(lp->base + HPLANCE_REGOFF + LANCE_RAP, value);
+ } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
+}
+
+static inline void WRITERDP(struct lance_private *lp, __u16 value)
+{
+ do {
+ out_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP, value);
+ } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
+}
+
+static inline __u16 READRDP(struct lance_private *lp)
+{
+ __u16 value;
+ do {
+ value = in_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP);
+ } while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
+ return value;
+}
+
+#endif
+#endif /* CONFIG_HPLANCE || CONFIG_HPLANCE_MODULE */
+
+/* debugging output macros, various flavours */
+/* #define TEST_HITS */
+#ifdef UNDEF
+#define PRINT_RINGS() \
+do { \
+ int t; \
+ for (t = 0; t < RX_RING_SIZE; t++) { \
+ printk("R%d: @(%02X %04X) len %04X, mblen %04X, bits %02X\n", \
+ t, ib->brx_ring[t].rmd1_hadr, ib->brx_ring[t].rmd0, \
+ ib->brx_ring[t].length, \
+ ib->brx_ring[t].mblength, ib->brx_ring[t].rmd1_bits); \
+ } \
+ for (t = 0; t < TX_RING_SIZE; t++) { \
+ printk("T%d: @(%02X %04X) len %04X, misc %04X, bits %02X\n", \
+ t, ib->btx_ring[t].tmd1_hadr, ib->btx_ring[t].tmd0, \
+ ib->btx_ring[t].length, \
+ ib->btx_ring[t].misc, ib->btx_ring[t].tmd1_bits); \
+ } \
+} while (0)
+#else
+#define PRINT_RINGS()
+#endif
+
+/* Load the CSR registers. The LANCE has to be STOPped when we do this! */
+static void load_csrs(struct lance_private *lp)
+{
+ volatile struct lance_init_block *aib = lp->lance_init_block;
+ int leptr;
+
+ leptr = LANCE_ADDR(aib);
+
+ WRITERAP(lp, LE_CSR1); /* load address of init block */
+ WRITERDP(lp, leptr & 0xFFFF);
+ WRITERAP(lp, LE_CSR2);
+ WRITERDP(lp, leptr >> 16);
+ WRITERAP(lp, LE_CSR3);
+ WRITERDP(lp, lp->busmaster_regval); /* set byteswap/ALEctrl/byte ctrl */
+
+ /* Point back to csr0 */
+ WRITERAP(lp, LE_CSR0);
+}
+
+/* #define to 0 or 1 appropriately */
+#define DEBUG_IRING 0
+/* Set up the Lance Rx and Tx rings and the init block */
+static void lance_init_ring(struct net_device *dev)
+{
+ struct lance_private *lp = netdev_priv(dev);
+ volatile struct lance_init_block *ib = lp->init_block;
+ volatile struct lance_init_block *aib; /* for LANCE_ADDR computations */
+ int leptr;
+ int i;
+
+ aib = lp->lance_init_block;
+
+ lp->rx_new = lp->tx_new = 0;
+ lp->rx_old = lp->tx_old = 0;
+
+ ib->mode = LE_MO_PROM; /* normal, enable Tx & Rx */
+
+ /* Copy the ethernet address to the lance init block
+ * Notice that we do a byteswap if we're big endian.
+ * [I think this is the right criterion; at least, sunlance,
+ * a2065 and atarilance do the byteswap and lance.c (PC) doesn't.
+ * However, the datasheet says that the BSWAP bit doesn't affect
+ * the init block, so surely it should be low byte first for
+ * everybody? Um.]
+ * We could define the ib->physaddr as three 16bit values and
+ * use (addr[1] << 8) | addr[0] & co, but this is more efficient.
+ */
+#ifdef __BIG_ENDIAN
+ ib->phys_addr[0] = dev->dev_addr[1];
+ ib->phys_addr[1] = dev->dev_addr[0];
+ ib->phys_addr[2] = dev->dev_addr[3];
+ ib->phys_addr[3] = dev->dev_addr[2];
+ ib->phys_addr[4] = dev->dev_addr[5];
+ ib->phys_addr[5] = dev->dev_addr[4];
+#else
+ for (i = 0; i < 6; i++)
+ ib->phys_addr[i] = dev->dev_addr[i];
+#endif
+
+ if (DEBUG_IRING)
+ printk("TX rings:\n");
+
+ lp->tx_full = 0;
+ /* Setup the Tx ring entries */
+ for (i = 0; i < (1 << lp->lance_log_tx_bufs); i++) {
+ leptr = LANCE_ADDR(&aib->tx_buf[i][0]);
+ ib->btx_ring[i].tmd0 = leptr;
+ ib->btx_ring[i].tmd1_hadr = leptr >> 16;
+ ib->btx_ring[i].tmd1_bits = 0;
+ ib->btx_ring[i].length = 0xf000; /* The ones required by tmd2 */
+ ib->btx_ring[i].misc = 0;
+ if (DEBUG_IRING)
+ printk("%d: 0x%8.8x\n", i, leptr);
+ }
+
+ /* Setup the Rx ring entries */
+ if (DEBUG_IRING)
+ printk("RX rings:\n");
+ for (i = 0; i < (1 << lp->lance_log_rx_bufs); i++) {
+ leptr = LANCE_ADDR(&aib->rx_buf[i][0]);
+
+ ib->brx_ring[i].rmd0 = leptr;
+ ib->brx_ring[i].rmd1_hadr = leptr >> 16;
+ ib->brx_ring[i].rmd1_bits = LE_R1_OWN;
+ /* 0xf000 == bits that must be one (reserved, presumably) */
+ ib->brx_ring[i].length = -RX_BUFF_SIZE | 0xf000;
+ ib->brx_ring[i].mblength = 0;
+ if (DEBUG_IRING)
+ printk("%d: 0x%8.8x\n", i, leptr);
+ }
+
+ /* Setup the initialization block */
+
+ /* Setup rx descriptor pointer */
+ leptr = LANCE_ADDR(&aib->brx_ring);
+ ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16);
+ ib->rx_ptr = leptr;
+ if (DEBUG_IRING)
+ printk("RX ptr: %8.8x\n", leptr);
+
+ /* Setup tx descriptor pointer */
+ leptr = LANCE_ADDR(&aib->btx_ring);
+ ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16);
+ ib->tx_ptr = leptr;
+ if (DEBUG_IRING)
+ printk("TX ptr: %8.8x\n", leptr);
+
+ /* Clear the multicast filter */
+ ib->filter[0] = 0;
+ ib->filter[1] = 0;
+ PRINT_RINGS();
+}
+
+/* LANCE must be STOPped before we do this, too... */
+static int init_restart_lance(struct lance_private *lp)
+{
+ int i;
+
+ WRITERAP(lp, LE_CSR0);
+ WRITERDP(lp, LE_C0_INIT);
+
+ /* Need a hook here for sunlance ledma stuff */
+
+ /* Wait for the lance to complete initialization */
+ for (i = 0; (i < 100) && !(READRDP(lp) & (LE_C0_ERR | LE_C0_IDON)); i++)
+ barrier();
+ if ((i == 100) || (READRDP(lp) & LE_C0_ERR)) {
+ printk("LANCE unopened after %d ticks, csr0=%4.4x.\n", i, READRDP(lp));
+ return -1;
+ }
+
+ /* Clear IDON by writing a "1", enable interrupts and start lance */
+ WRITERDP(lp, LE_C0_IDON);
+ WRITERDP(lp, LE_C0_INEA | LE_C0_STRT);
+
+ return 0;
+}
+
+static int lance_reset(struct net_device *dev)
+{
+ struct lance_private *lp = netdev_priv(dev);
+ int status;
+
+ /* Stop the lance */
+ WRITERAP(lp, LE_CSR0);
+ WRITERDP(lp, LE_C0_STOP);
+
+ load_csrs(lp);
+ lance_init_ring(dev);
+ dev->trans_start = jiffies; /* prevent tx timeout */
+ status = init_restart_lance(lp);
+#ifdef DEBUG_DRIVER
+ printk("Lance restart=%d\n", status);
+#endif
+ return status;
+}
+
+static int lance_rx(struct net_device *dev)
+{
+ struct lance_private *lp = netdev_priv(dev);
+ volatile struct lance_init_block *ib = lp->init_block;
+ volatile struct lance_rx_desc *rd;
+ unsigned char bits;
+#ifdef TEST_HITS
+ int i;
+#endif
+
+#ifdef TEST_HITS
+ printk("[");
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ if (i == lp->rx_new)
+ printk("%s",
+ ib->brx_ring[i].rmd1_bits & LE_R1_OWN ? "_" : "X");
+ else
+ printk("%s",
+ ib->brx_ring[i].rmd1_bits & LE_R1_OWN ? "." : "1");
+ }
+ printk("]");
+#endif
+#ifdef CONFIG_HP300
+ blinken_leds(0x40, 0);
+#endif
+ WRITERDP(lp, LE_C0_RINT | LE_C0_INEA); /* ack Rx int, reenable ints */
+ for (rd = &ib->brx_ring[lp->rx_new]; /* For each Rx ring we own... */
+ !((bits = rd->rmd1_bits) & LE_R1_OWN);
+ rd = &ib->brx_ring[lp->rx_new]) {
+
+ /* We got an incomplete frame? */
+ if ((bits & LE_R1_POK) != LE_R1_POK) {
+ dev->stats.rx_over_errors++;
+ dev->stats.rx_errors++;
+ continue;
+ } else if (bits & LE_R1_ERR) {
+ /* Count only the end frame as a rx error,
+ * not the beginning
+ */
+ if (bits & LE_R1_BUF)
+ dev->stats.rx_fifo_errors++;
+ if (bits & LE_R1_CRC)
+ dev->stats.rx_crc_errors++;
+ if (bits & LE_R1_OFL)
+ dev->stats.rx_over_errors++;
+ if (bits & LE_R1_FRA)
+ dev->stats.rx_frame_errors++;
+ if (bits & LE_R1_EOP)
+ dev->stats.rx_errors++;
+ } else {
+ int len = (rd->mblength & 0xfff) - 4;
+ struct sk_buff *skb = netdev_alloc_skb(dev, len + 2);
+
+ if (!skb) {
+ dev->stats.rx_dropped++;
+ rd->mblength = 0;
+ rd->rmd1_bits = LE_R1_OWN;
+ lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
+ return 0;
+ }
+
+ skb_reserve(skb, 2); /* 16 byte align */
+ skb_put(skb, len); /* make room */
+ skb_copy_to_linear_data(skb,
+ (unsigned char *)&(ib->rx_buf[lp->rx_new][0]),
+ len);
+ skb->protocol = eth_type_trans(skb, dev);
+ netif_rx(skb);
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += len;
+ }
+
+ /* Return the packet to the pool */
+ rd->mblength = 0;
+ rd->rmd1_bits = LE_R1_OWN;
+ lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
+ }
+ return 0;
+}
+
+static int lance_tx(struct net_device *dev)
+{
+ struct lance_private *lp = netdev_priv(dev);
+ volatile struct lance_init_block *ib = lp->init_block;
+ volatile struct lance_tx_desc *td;
+ int i, j;
+ int status;
+
+#ifdef CONFIG_HP300
+ blinken_leds(0x80, 0);
+#endif
+ /* csr0 is 2f3 */
+ WRITERDP(lp, LE_C0_TINT | LE_C0_INEA);
+ /* csr0 is 73 */
+
+ j = lp->tx_old;
+ for (i = j; i != lp->tx_new; i = j) {
+ td = &ib->btx_ring[i];
+
+ /* If we hit a packet not owned by us, stop */
+ if (td->tmd1_bits & LE_T1_OWN)
+ break;
+
+ if (td->tmd1_bits & LE_T1_ERR) {
+ status = td->misc;
+
+ dev->stats.tx_errors++;
+ if (status & LE_T3_RTY)
+ dev->stats.tx_aborted_errors++;
+ if (status & LE_T3_LCOL)
+ dev->stats.tx_window_errors++;
+
+ if (status & LE_T3_CLOS) {
+ dev->stats.tx_carrier_errors++;
+ if (lp->auto_select) {
+ lp->tpe = 1 - lp->tpe;
+ printk("%s: Carrier Lost, trying %s\n",
+ dev->name,
+ lp->tpe ? "TPE" : "AUI");
+ /* Stop the lance */
+ WRITERAP(lp, LE_CSR0);
+ WRITERDP(lp, LE_C0_STOP);
+ lance_init_ring(dev);
+ load_csrs(lp);
+ init_restart_lance(lp);
+ return 0;
+ }
+ }
+
+ /* buffer errors and underflows turn off the transmitter */
+ /* Restart the adapter */
+ if (status & (LE_T3_BUF|LE_T3_UFL)) {
+ dev->stats.tx_fifo_errors++;
+
+ printk("%s: Tx: ERR_BUF|ERR_UFL, restarting\n",
+ dev->name);
+ /* Stop the lance */
+ WRITERAP(lp, LE_CSR0);
+ WRITERDP(lp, LE_C0_STOP);
+ lance_init_ring(dev);
+ load_csrs(lp);
+ init_restart_lance(lp);
+ return 0;
+ }
+ } else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) {
+ /*
+ * So we don't count the packet more than once.
+ */
+ td->tmd1_bits &= ~(LE_T1_POK);
+
+ /* One collision before packet was sent. */
+ if (td->tmd1_bits & LE_T1_EONE)
+ dev->stats.collisions++;
+
+ /* More than one collision, be optimistic. */
+ if (td->tmd1_bits & LE_T1_EMORE)
+ dev->stats.collisions += 2;
+
+ dev->stats.tx_packets++;
+ }
+
+ j = (j + 1) & lp->tx_ring_mod_mask;
+ }
+ lp->tx_old = j;
+ WRITERDP(lp, LE_C0_TINT | LE_C0_INEA);
+ return 0;
+}
+
+static irqreturn_t
+lance_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *)dev_id;
+ struct lance_private *lp = netdev_priv(dev);
+ int csr0;
+
+ spin_lock(&lp->devlock);
+
+ WRITERAP(lp, LE_CSR0); /* LANCE Controller Status */
+ csr0 = READRDP(lp);
+
+ PRINT_RINGS();
+
+ if (!(csr0 & LE_C0_INTR)) { /* Check if any interrupt has */
+ spin_unlock(&lp->devlock);
+ return IRQ_NONE; /* been generated by the Lance. */
+ }
+
+ /* Acknowledge all the interrupt sources ASAP */
+ WRITERDP(lp, csr0 & ~(LE_C0_INEA|LE_C0_TDMD|LE_C0_STOP|LE_C0_STRT|LE_C0_INIT));
+
+ if ((csr0 & LE_C0_ERR)) {
+ /* Clear the error condition */
+ WRITERDP(lp, LE_C0_BABL|LE_C0_ERR|LE_C0_MISS|LE_C0_INEA);
+ }
+
+ if (csr0 & LE_C0_RINT)
+ lance_rx(dev);
+
+ if (csr0 & LE_C0_TINT)
+ lance_tx(dev);
+
+ /* Log misc errors. */
+ if (csr0 & LE_C0_BABL)
+ dev->stats.tx_errors++; /* Tx babble. */
+ if (csr0 & LE_C0_MISS)
+ dev->stats.rx_errors++; /* Missed a Rx frame. */
+ if (csr0 & LE_C0_MERR) {
+ printk("%s: Bus master arbitration failure, status %4.4x.\n",
+ dev->name, csr0);
+ /* Restart the chip. */
+ WRITERDP(lp, LE_C0_STRT);
+ }
+
+ if (lp->tx_full && netif_queue_stopped(dev) && (TX_BUFFS_AVAIL >= 0)) {
+ lp->tx_full = 0;
+ netif_wake_queue(dev);
+ }
+
+ WRITERAP(lp, LE_CSR0);
+ WRITERDP(lp, LE_C0_BABL|LE_C0_CERR|LE_C0_MISS|LE_C0_MERR|LE_C0_IDON|LE_C0_INEA);
+
+ spin_unlock(&lp->devlock);
+ return IRQ_HANDLED;
+}
+
+int lance_open(struct net_device *dev)
+{
+ struct lance_private *lp = netdev_priv(dev);
+ int res;
+
+ /* Install the Interrupt handler. Or we could shunt this out to specific drivers? */
+ if (request_irq(lp->irq, lance_interrupt, IRQF_SHARED, lp->name, dev))
+ return -EAGAIN;
+
+ res = lance_reset(dev);
+ spin_lock_init(&lp->devlock);
+ netif_start_queue(dev);
+
+ return res;
+}
+EXPORT_SYMBOL_GPL(lance_open);
+
+int lance_close(struct net_device *dev)
+{
+ struct lance_private *lp = netdev_priv(dev);
+
+ netif_stop_queue(dev);
+
+ /* Stop the LANCE */
+ WRITERAP(lp, LE_CSR0);
+ WRITERDP(lp, LE_C0_STOP);
+
+ free_irq(lp->irq, dev);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(lance_close);
+
+void lance_tx_timeout(struct net_device *dev)
+{
+ printk("lance_tx_timeout\n");
+ lance_reset(dev);
+ dev->trans_start = jiffies; /* prevent tx timeout */
+ netif_wake_queue(dev);
+}
+EXPORT_SYMBOL_GPL(lance_tx_timeout);
+
+int lance_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct lance_private *lp = netdev_priv(dev);
+ volatile struct lance_init_block *ib = lp->init_block;
+ int entry, skblen, len;
+ static int outs;
+ unsigned long flags;
+
+ if (!TX_BUFFS_AVAIL)
+ return NETDEV_TX_LOCKED;
+
+ netif_stop_queue(dev);
+
+ skblen = skb->len;
+
+#ifdef DEBUG_DRIVER
+ /* dump the packet */
+ {
+ int i;
+
+ for (i = 0; i < 64; i++) {
+ if ((i % 16) == 0)
+ printk("\n");
+ printk("%2.2x ", skb->data[i]);
+ }
+ }
+#endif
+ len = (skblen <= ETH_ZLEN) ? ETH_ZLEN : skblen;
+ entry = lp->tx_new & lp->tx_ring_mod_mask;
+ ib->btx_ring[entry].length = (-len) | 0xf000;
+ ib->btx_ring[entry].misc = 0;
+
+ if (skb->len < ETH_ZLEN)
+ memset((void *)&ib->tx_buf[entry][0], 0, ETH_ZLEN);
+ skb_copy_from_linear_data(skb, (void *)&ib->tx_buf[entry][0], skblen);
+
+ /* Now, give the packet to the lance */
+ ib->btx_ring[entry].tmd1_bits = (LE_T1_POK|LE_T1_OWN);
+ lp->tx_new = (lp->tx_new + 1) & lp->tx_ring_mod_mask;
+
+ outs++;
+ /* Kick the lance: transmit now */
+ WRITERDP(lp, LE_C0_INEA | LE_C0_TDMD);
+ dev_consume_skb_any(skb);
+
+ spin_lock_irqsave(&lp->devlock, flags);
+ if (TX_BUFFS_AVAIL)
+ netif_start_queue(dev);
+ else
+ lp->tx_full = 1;
+ spin_unlock_irqrestore(&lp->devlock, flags);
+
+ return NETDEV_TX_OK;
+}
+EXPORT_SYMBOL_GPL(lance_start_xmit);
+
+/* taken from the depca driver via a2065.c */
+static void lance_load_multicast(struct net_device *dev)
+{
+ struct lance_private *lp = netdev_priv(dev);
+ volatile struct lance_init_block *ib = lp->init_block;
+ volatile u16 *mcast_table = (u16 *)&ib->filter;
+ struct netdev_hw_addr *ha;
+ u32 crc;
+
+ /* set all multicast bits */
+ if (dev->flags & IFF_ALLMULTI) {
+ ib->filter[0] = 0xffffffff;
+ ib->filter[1] = 0xffffffff;
+ return;
+ }
+ /* clear the multicast filter */
+ ib->filter[0] = 0;
+ ib->filter[1] = 0;
+
+ /* Add addresses */
+ netdev_for_each_mc_addr(ha, dev) {
+ crc = ether_crc_le(6, ha->addr);
+ crc = crc >> 26;
+ mcast_table[crc >> 4] |= 1 << (crc & 0xf);
+ }
+}
+
+
+void lance_set_multicast(struct net_device *dev)
+{
+ struct lance_private *lp = netdev_priv(dev);
+ volatile struct lance_init_block *ib = lp->init_block;
+ int stopped;
+
+ stopped = netif_queue_stopped(dev);
+ if (!stopped)
+ netif_stop_queue(dev);
+
+ while (lp->tx_old != lp->tx_new)
+ schedule();
+
+ WRITERAP(lp, LE_CSR0);
+ WRITERDP(lp, LE_C0_STOP);
+ lance_init_ring(dev);
+
+ if (dev->flags & IFF_PROMISC) {
+ ib->mode |= LE_MO_PROM;
+ } else {
+ ib->mode &= ~LE_MO_PROM;
+ lance_load_multicast(dev);
+ }
+ load_csrs(lp);
+ init_restart_lance(lp);
+
+ if (!stopped)
+ netif_start_queue(dev);
+}
+EXPORT_SYMBOL_GPL(lance_set_multicast);
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+void lance_poll(struct net_device *dev)
+{
+ struct lance_private *lp = netdev_priv(dev);
+
+ spin_lock(&lp->devlock);
+ WRITERAP(lp, LE_CSR0);
+ WRITERDP(lp, LE_C0_STRT);
+ spin_unlock(&lp->devlock);
+ lance_interrupt(dev->irq, dev);
+}
+#endif
+
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff