| /* |
| * 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/init.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/slab.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/system.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; |
| 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; |
| int len = 0; /* XXX shut up gcc warnings */ |
| struct sk_buff *skb = 0; /* XXX shut up gcc warnings */ |
| #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) { |
| lp->stats.rx_over_errors++; |
| lp->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) lp->stats.rx_fifo_errors++; |
| if (bits & LE_R1_CRC) lp->stats.rx_crc_errors++; |
| if (bits & LE_R1_OFL) lp->stats.rx_over_errors++; |
| if (bits & LE_R1_FRA) lp->stats.rx_frame_errors++; |
| if (bits & LE_R1_EOP) lp->stats.rx_errors++; |
| } else { |
| len = (rd->mblength & 0xfff) - 4; |
| skb = dev_alloc_skb (len+2); |
| |
| if (skb == 0) { |
| printk ("%s: Memory squeeze, deferring packet.\n", |
| dev->name); |
| lp->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->dev = dev; |
| skb_reserve (skb, 2); /* 16 byte align */ |
| skb_put (skb, len); /* make room */ |
| eth_copy_and_sum(skb, |
| (unsigned char *)&(ib->rx_buf [lp->rx_new][0]), |
| len, 0); |
| skb->protocol = eth_type_trans (skb, dev); |
| netif_rx (skb); |
| dev->last_rx = jiffies; |
| lp->stats.rx_packets++; |
| lp->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; |
| |
| lp->stats.tx_errors++; |
| if (status & LE_T3_RTY) lp->stats.tx_aborted_errors++; |
| if (status & LE_T3_LCOL) lp->stats.tx_window_errors++; |
| |
| if (status & LE_T3_CLOS) { |
| lp->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)) { |
| lp->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) |
| lp->stats.collisions++; |
| |
| /* More than one collision, be optimistic. */ |
| if (td->tmd1_bits & LE_T1_EMORE) |
| lp->stats.collisions += 2; |
| |
| lp->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) |
| lp->stats.tx_errors++; /* Tx babble. */ |
| if (csr0 & LE_C0_MISS) |
| lp->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, SA_SHIRQ, lp->name, dev)) |
| return -EAGAIN; |
| |
| res = lance_reset(dev); |
| spin_lock_init(&lp->devlock); |
| netif_start_queue (dev); |
| |
| return res; |
| } |
| |
| 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; |
| } |
| |
| void lance_tx_timeout(struct net_device *dev) |
| { |
| printk("lance_tx_timeout\n"); |
| lance_reset(dev); |
| dev->trans_start = jiffies; |
| netif_wake_queue (dev); |
| } |
| |
| |
| 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 -1; |
| |
| 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((char *)&ib->tx_buf[entry][0], 0, ETH_ZLEN); |
| memcpy ((char *)&ib->tx_buf [entry][0], skb->data, 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->trans_start = jiffies; |
| dev_kfree_skb (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 0; |
| } |
| |
| struct net_device_stats *lance_get_stats (struct net_device *dev) |
| { |
| struct lance_private *lp = netdev_priv(dev); |
| |
| return &lp->stats; |
| } |
| |
| /* 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 dev_mc_list *dmi=dev->mc_list; |
| char *addrs; |
| int i; |
| 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 */ |
| for (i = 0; i < dev->mc_count; i++){ |
| addrs = dmi->dmi_addr; |
| dmi = dmi->next; |
| |
| /* multicast address? */ |
| if (!(*addrs & 1)) |
| continue; |
| |
| crc = ether_crc_le(6, addrs); |
| crc = crc >> 26; |
| mcast_table [crc >> 4] |= 1 << (crc & 0xf); |
| } |
| return; |
| } |
| |
| |
| 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); |
| } |
| |
| #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"); |