diff options
Diffstat (limited to 'drivers/net/ethernet/amd/7990.c')
| -rw-r--r-- | drivers/net/ethernet/amd/7990.c | 836 |
1 files changed, 422 insertions, 414 deletions
diff --git a/drivers/net/ethernet/amd/7990.c b/drivers/net/ethernet/amd/7990.c index 65926a956575..72cfff7d23a5 100644 --- a/drivers/net/ethernet/amd/7990.c +++ b/drivers/net/ethernet/amd/7990.c @@ -42,9 +42,9 @@ #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) +#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" @@ -56,9 +56,9 @@ #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)) +#define WRITERAP(lp, x) (lp->writerap(lp, x)) +#define WRITERDP(lp, x) (lp->writerdp(lp, x)) +#define READRDP(lp) (lp->readrdp(lp)) #else @@ -94,428 +94,436 @@ static inline __u16 READRDP(struct lance_private *lp) #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);\ - }\ + 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) +static void load_csrs(struct lance_private *lp) { - volatile struct lance_init_block *aib = lp->lance_init_block; - int leptr; + volatile struct lance_init_block *aib = lp->lance_init_block; + int leptr; - leptr = LANCE_ADDR (aib); + 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 */ + 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); + /* 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) +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. - */ + 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]; + 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]; + for (i = 0; i < 6; i++) + ib->phys_addr[i] = dev->dev_addr[i]; #endif - if (DEBUG_IRING) - printk ("TX rings:\n"); + 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(); + /* 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) +static int init_restart_lance(struct lance_private *lp) { - int i; + int i; - WRITERAP(lp, LE_CSR0); - WRITERDP(lp, LE_C0_INIT); + WRITERAP(lp, LE_CSR0); + WRITERDP(lp, LE_C0_INIT); - /* Need a hook here for sunlance ledma stuff */ + /* 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; - } + /* 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); + /* 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; + return 0; } -static int lance_reset (struct net_device *dev) +static int lance_reset(struct net_device *dev) { - struct lance_private *lp = netdev_priv(dev); - int status; + struct lance_private *lp = netdev_priv(dev); + int status; - /* Stop the lance */ - WRITERAP(lp, LE_CSR0); - WRITERDP(lp, LE_C0_STOP); + /* 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); + 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); + printk("Lance restart=%d\n", status); #endif - return status; + return status; } -static int lance_rx (struct net_device *dev) +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; + 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; + 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 ("]"); + 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 { + 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); + 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; + } + + /* 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) +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; + 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; + /* 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) +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; + struct net_device *dev = (struct net_device *)dev_id; + struct lance_private *lp = netdev_priv(dev); + int csr0; - spin_lock (&lp->devlock); + spin_lock(&lp->devlock); - WRITERAP(lp, LE_CSR0); /* LANCE Controller Status */ - csr0 = READRDP(lp); + WRITERAP(lp, LE_CSR0); /* LANCE Controller Status */ + csr0 = READRDP(lp); - PRINT_RINGS(); + PRINT_RINGS(); - if (!(csr0 & LE_C0_INTR)) { /* Check if any interrupt has */ - spin_unlock (&lp->devlock); - return IRQ_NONE; /* been generated by the Lance. */ + 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)) { + /* 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); - } + 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); + 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); + spin_unlock(&lp->devlock); return IRQ_HANDLED; } -int lance_open (struct net_device *dev) +int lance_open(struct net_device *dev) { - struct lance_private *lp = netdev_priv(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; + /* 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); + res = lance_reset(dev); spin_lock_init(&lp->devlock); - netif_start_queue (dev); + netif_start_queue(dev); return res; } EXPORT_SYMBOL_GPL(lance_open); -int lance_close (struct net_device *dev) +int lance_close(struct net_device *dev) { - struct lance_private *lp = netdev_priv(dev); + struct lance_private *lp = netdev_priv(dev); - netif_stop_queue (dev); + netif_stop_queue(dev); - /* Stop the LANCE */ - WRITERAP(lp, LE_CSR0); - WRITERDP(lp, LE_C0_STOP); + /* Stop the LANCE */ + WRITERAP(lp, LE_CSR0); + WRITERDP(lp, LE_C0_STOP); - free_irq(lp->irq, dev); + free_irq(lp->irq, dev); - return 0; + return 0; } EXPORT_SYMBOL_GPL(lance_close); @@ -524,122 +532,122 @@ 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); + netif_wake_queue(dev); } EXPORT_SYMBOL_GPL(lance_tx_timeout); -int lance_start_xmit (struct sk_buff *skb, struct net_device *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; + 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; + if (!TX_BUFFS_AVAIL) + return NETDEV_TX_LOCKED; - netif_stop_queue (dev); + netif_stop_queue(dev); - skblen = skb->len; + 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]); - } - } + /* 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; + 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); + 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; + /* 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_kfree_skb (skb); + outs++; + /* Kick the lance: transmit now */ + WRITERDP(lp, LE_C0_INEA | LE_C0_TDMD); + dev_kfree_skb(skb); - spin_lock_irqsave (&lp->devlock, flags); - if (TX_BUFFS_AVAIL) - netif_start_queue (dev); + 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); + spin_unlock_irqrestore(&lp->devlock, flags); - return NETDEV_TX_OK; + 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) +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 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 */ + 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); - } + crc = crc >> 26; + mcast_table[crc >> 4] |= 1 << (crc & 0xf); + } } -void lance_set_multicast (struct net_device *dev) +void lance_set_multicast(struct net_device *dev) { - struct lance_private *lp = netdev_priv(dev); - volatile struct lance_init_block *ib = lp->init_block; + 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(); + netif_stop_queue(dev); - WRITERAP(lp, LE_CSR0); - WRITERDP(lp, LE_C0_STOP); - lance_init_ring (dev); + while (lp->tx_old != lp->tx_new) + schedule(); - 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); + 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); + netif_start_queue(dev); } EXPORT_SYMBOL_GPL(lance_set_multicast); @@ -648,10 +656,10 @@ void lance_poll(struct net_device *dev) { struct lance_private *lp = netdev_priv(dev); - spin_lock (&lp->devlock); + spin_lock(&lp->devlock); WRITERAP(lp, LE_CSR0); WRITERDP(lp, LE_C0_STRT); - spin_unlock (&lp->devlock); + spin_unlock(&lp->devlock); lance_interrupt(dev->irq, dev); } #endif |