diff options
Diffstat (limited to 'drivers/net/fec.c')
| -rw-r--r-- | drivers/net/fec.c | 354 |
1 files changed, 139 insertions, 215 deletions
diff --git a/drivers/net/fec.c b/drivers/net/fec.c index e03b1773966d..672566b89ecf 100644 --- a/drivers/net/fec.c +++ b/drivers/net/fec.c @@ -86,8 +86,7 @@ static unsigned char fec_mac_default[] = { #endif #endif /* CONFIG_M5272 */ -/* Forward declarations of some structures to support different PHYs -*/ +/* Forward declarations of some structures to support different PHYs */ typedef struct { uint mii_data; @@ -123,8 +122,7 @@ typedef struct { #error "FEC: descriptor ring size constants too large" #endif -/* Interrupt events/masks. -*/ +/* Interrupt events/masks. */ #define FEC_ENET_HBERR ((uint)0x80000000) /* Heartbeat error */ #define FEC_ENET_BABR ((uint)0x40000000) /* Babbling receiver */ #define FEC_ENET_BABT ((uint)0x20000000) /* Babbling transmitter */ @@ -177,15 +175,14 @@ struct fec_enet_private { ushort skb_cur; ushort skb_dirty; - /* CPM dual port RAM relative addresses. - */ + /* CPM dual port RAM relative addresses */ dma_addr_t bd_dma; - /* Address of Rx and Tx buffers. */ + /* Address of Rx and Tx buffers */ struct bufdesc *rx_bd_base; struct bufdesc *tx_bd_base; /* The next free ring entry */ struct bufdesc *cur_rx, *cur_tx; - /* The ring entries to be free()ed. */ + /* The ring entries to be free()ed */ struct bufdesc *dirty_tx; uint tx_full; @@ -245,19 +242,16 @@ static mii_list_t *mii_tail; static int mii_queue(struct net_device *dev, int request, void (*func)(uint, struct net_device *)); -/* Make MII read/write commands for the FEC. -*/ +/* Make MII read/write commands for the FEC */ #define mk_mii_read(REG) (0x60020000 | ((REG & 0x1f) << 18)) #define mk_mii_write(REG, VAL) (0x50020000 | ((REG & 0x1f) << 18) | \ (VAL & 0xffff)) #define mk_mii_end 0 -/* Transmitter timeout. -*/ -#define TX_TIMEOUT (2*HZ) +/* Transmitter timeout */ +#define TX_TIMEOUT (2 * HZ) -/* Register definitions for the PHY. -*/ +/* Register definitions for the PHY */ #define MII_REG_CR 0 /* Control Register */ #define MII_REG_SR 1 /* Status Register */ @@ -307,7 +301,7 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) bdp = fep->cur_tx; status = bdp->cbd_sc; -#ifndef final_version + if (status & BD_ENET_TX_READY) { /* Ooops. All transmit buffers are full. Bail out. * This should not happen, since dev->tbusy should be set. @@ -316,21 +310,18 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) spin_unlock_irqrestore(&fep->hw_lock, flags); return 1; } -#endif - /* Clear all of the status flags. - */ + /* Clear all of the status flags */ status &= ~BD_ENET_TX_STATS; - /* Set buffer length and buffer pointer. - */ + /* Set buffer length and buffer pointer */ bdp->cbd_bufaddr = __pa(skb->data); bdp->cbd_datlen = skb->len; /* - * On some FEC implementations data must be aligned on - * 4-byte boundaries. Use bounce buffers to copy data - * and get it aligned. Ugh. + * On some FEC implementations data must be aligned on + * 4-byte boundaries. Use bounce buffers to copy data + * and get it aligned. Ugh. */ if (bdp->cbd_bufaddr & FEC_ALIGNMENT) { unsigned int index; @@ -339,8 +330,7 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) bdp->cbd_bufaddr = __pa(fep->tx_bounce[index]); } - /* Save skb pointer. - */ + /* Save skb pointer */ fep->tx_skbuff[fep->skb_cur] = skb; dev->stats.tx_bytes += skb->len; @@ -355,7 +345,6 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) /* Send it on its way. Tell FEC it's ready, interrupt when done, * it's the last BD of the frame, and to put the CRC on the end. */ - status |= (BD_ENET_TX_READY | BD_ENET_TX_INTR | BD_ENET_TX_LAST | BD_ENET_TX_TC); bdp->cbd_sc = status; @@ -365,13 +354,11 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) /* Trigger transmission start */ writel(0, fep->hwp + FEC_X_DES_ACTIVE); - /* If this was the last BD in the ring, start at the beginning again. - */ - if (status & BD_ENET_TX_WRAP) { + /* If this was the last BD in the ring, start at the beginning again. */ + if (status & BD_ENET_TX_WRAP) bdp = fep->tx_bd_base; - } else { + else bdp++; - } if (bdp == fep->dirty_tx) { fep->tx_full = 1; @@ -429,9 +416,6 @@ fec_timeout(struct net_device *dev) netif_wake_queue(dev); } -/* The interrupt handler. - * This is called from the MPC core interrupt. - */ static irqreturn_t fec_enet_interrupt(int irq, void * dev_id) { @@ -440,12 +424,10 @@ fec_enet_interrupt(int irq, void * dev_id) uint int_events; irqreturn_t ret = IRQ_NONE; - /* Get the interrupt events that caused us to be here. */ do { int_events = readl(fep->hwp + FEC_IEVENT); writel(int_events, fep->hwp + FEC_IEVENT); - /* Handle receive event in its own function. */ if (int_events & FEC_ENET_RXF) { ret = IRQ_HANDLED; fec_enet_rx(dev); @@ -506,31 +488,27 @@ fec_enet_tx(struct net_device *dev) dev->stats.tx_packets++; } -#ifndef final_version if (status & BD_ENET_TX_READY) printk("HEY! Enet xmit interrupt and TX_READY.\n"); -#endif + /* Deferred means some collisions occurred during transmit, * but we eventually sent the packet OK. */ if (status & BD_ENET_TX_DEF) dev->stats.collisions++; - /* Free the sk buffer associated with this last transmit. - */ + /* Free the sk buffer associated with this last transmit */ dev_kfree_skb_any(skb); fep->tx_skbuff[fep->skb_dirty] = NULL; fep->skb_dirty = (fep->skb_dirty + 1) & TX_RING_MOD_MASK; - /* Update pointer to next buffer descriptor to be transmitted. - */ + /* Update pointer to next buffer descriptor to be transmitted */ if (status & BD_ENET_TX_WRAP) bdp = fep->tx_bd_base; else bdp++; - /* Since we have freed up a buffer, the ring is no longer - * full. + /* Since we have freed up a buffer, the ring is no longer full */ if (fep->tx_full) { fep->tx_full = 0; @@ -569,114 +547,93 @@ fec_enet_rx(struct net_device *dev) */ bdp = fep->cur_rx; -while (!((status = bdp->cbd_sc) & BD_ENET_RX_EMPTY)) { + while (!((status = bdp->cbd_sc) & BD_ENET_RX_EMPTY)) { -#ifndef final_version - /* Since we have allocated space to hold a complete frame, - * the last indicator should be set. - */ - if ((status & BD_ENET_RX_LAST) == 0) - printk("FEC ENET: rcv is not +last\n"); -#endif + /* Since we have allocated space to hold a complete frame, + * the last indicator should be set. + */ + if ((status & BD_ENET_RX_LAST) == 0) + printk("FEC ENET: rcv is not +last\n"); - if (!fep->opened) - goto rx_processing_done; + if (!fep->opened) + goto rx_processing_done; - /* Check for errors. */ - if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_NO | + /* Check for errors. */ + if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) { - dev->stats.rx_errors++; - if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH)) { - /* Frame too long or too short. */ - dev->stats.rx_length_errors++; + dev->stats.rx_errors++; + if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH)) { + /* Frame too long or too short. */ + dev->stats.rx_length_errors++; + } + if (status & BD_ENET_RX_NO) /* Frame alignment */ + dev->stats.rx_frame_errors++; + if (status & BD_ENET_RX_CR) /* CRC Error */ + dev->stats.rx_crc_errors++; + if (status & BD_ENET_RX_OV) /* FIFO overrun */ + dev->stats.rx_fifo_errors++; } - if (status & BD_ENET_RX_NO) /* Frame alignment */ - dev->stats.rx_frame_errors++; - if (status & BD_ENET_RX_CR) /* CRC Error */ - dev->stats.rx_crc_errors++; - if (status & BD_ENET_RX_OV) /* FIFO overrun */ - dev->stats.rx_fifo_errors++; - } - /* Report late collisions as a frame error. - * On this error, the BD is closed, but we don't know what we - * have in the buffer. So, just drop this frame on the floor. - */ - if (status & BD_ENET_RX_CL) { - dev->stats.rx_errors++; - dev->stats.rx_frame_errors++; - goto rx_processing_done; - } + /* Report late collisions as a frame error. + * On this error, the BD is closed, but we don't know what we + * have in the buffer. So, just drop this frame on the floor. + */ + if (status & BD_ENET_RX_CL) { + dev->stats.rx_errors++; + dev->stats.rx_frame_errors++; + goto rx_processing_done; + } - /* Process the incoming frame. - */ - dev->stats.rx_packets++; - pkt_len = bdp->cbd_datlen; - dev->stats.rx_bytes += pkt_len; - data = (__u8*)__va(bdp->cbd_bufaddr); + /* Process the incoming frame. */ + dev->stats.rx_packets++; + pkt_len = bdp->cbd_datlen; + dev->stats.rx_bytes += pkt_len; + data = (__u8*)__va(bdp->cbd_bufaddr); - dma_sync_single(NULL, (unsigned long)__pa(data), + dma_sync_single(NULL, (unsigned long)__pa(data), pkt_len - 4, DMA_FROM_DEVICE); - /* This does 16 byte alignment, exactly what we need. - * The packet length includes FCS, but we don't want to - * include that when passing upstream as it messes up - * bridging applications. - */ - skb = dev_alloc_skb(pkt_len-4); - - if (skb == NULL) { - printk("%s: Memory squeeze, dropping packet.\n", dev->name); - dev->stats.rx_dropped++; - } else { - skb_put(skb,pkt_len-4); /* Make room */ - skb_copy_to_linear_data(skb, data, pkt_len-4); - skb->protocol=eth_type_trans(skb,dev); - netif_rx(skb); - } - rx_processing_done: - - /* Clear the status flags for this buffer. - */ - status &= ~BD_ENET_RX_STATS; + /* This does 16 byte alignment, exactly what we need. + * The packet length includes FCS, but we don't want to + * include that when passing upstream as it messes up + * bridging applications. + */ + skb = dev_alloc_skb(pkt_len - 4); - /* Mark the buffer empty. - */ - status |= BD_ENET_RX_EMPTY; - bdp->cbd_sc = status; + if (skb == NULL) { + printk("%s: Memory squeeze, dropping packet.\n", + dev->name); + dev->stats.rx_dropped++; + } else { + skb_put(skb, pkt_len - 4); /* Make room */ + skb_copy_to_linear_data(skb, data, pkt_len - 4); + skb->protocol = eth_type_trans(skb, dev); + netif_rx(skb); + } +rx_processing_done: + /* Clear the status flags for this buffer */ + status &= ~BD_ENET_RX_STATS; - /* Update BD pointer to next entry. - */ - if (status & BD_ENET_RX_WRAP) - bdp = fep->rx_bd_base; - else - bdp++; + /* Mark the buffer empty */ + status |= BD_ENET_RX_EMPTY; + bdp->cbd_sc = status; -#if 1 - /* Doing this here will keep the FEC running while we process - * incoming frames. On a heavily loaded network, we should be - * able to keep up at the expense of system resources. - */ - writel(0, fep->hwp + FEC_R_DES_ACTIVE); -#endif - } /* while (!((status = bdp->cbd_sc) & BD_ENET_RX_EMPTY)) */ + /* Update BD pointer to next entry */ + if (status & BD_ENET_RX_WRAP) + bdp = fep->rx_bd_base; + else + bdp++; + /* Doing this here will keep the FEC running while we process + * incoming frames. On a heavily loaded network, we should be + * able to keep up at the expense of system resources. + */ + writel(0, fep->hwp + FEC_R_DES_ACTIVE); + } fep->cur_rx = bdp; -#if 0 - /* Doing this here will allow us to process all frames in the - * ring before the FEC is allowed to put more there. On a heavily - * loaded network, some frames may be lost. Unfortunately, this - * increases the interrupt overhead since we can potentially work - * our way back to the interrupt return only to come right back - * here. - */ - fecp->fec_r_des_active = 0; -#endif - spin_unlock_irq(&fep->hw_lock); } - /* called from interrupt context */ static void fec_enet_mii(struct net_device *dev) @@ -714,8 +671,7 @@ mii_queue(struct net_device *dev, int regval, void (*func)(uint, struct net_devi mii_list_t *mip; int retval; - /* Add PHY address to register command. - */ + /* Add PHY address to register command */ fep = netdev_priv(dev); spin_lock_irqsave(&fep->mii_lock, flags); @@ -1358,11 +1314,6 @@ static void mii_relink(struct work_struct *work) fec_restart(dev, duplex); } else fec_stop(dev); - -#if 0 - enable_irq(fep->mii_irq); -#endif - } /* mii_queue_relink is called in interrupt context from mii_link_interrupt */ @@ -1371,12 +1322,12 @@ static void mii_queue_relink(uint mii_reg, struct net_device *dev) struct fec_enet_private *fep = netdev_priv(dev); /* - ** We cannot queue phy_task twice in the workqueue. It - ** would cause an endless loop in the workqueue. - ** Fortunately, if the last mii_relink entry has not yet been - ** executed now, it will do the job for the current interrupt, - ** which is just what we want. - */ + * We cannot queue phy_task twice in the workqueue. It + * would cause an endless loop in the workqueue. + * Fortunately, if the last mii_relink entry has not yet been + * executed now, it will do the job for the current interrupt, + * which is just what we want. + */ if (fep->mii_phy_task_queued) return; @@ -1407,8 +1358,7 @@ phy_cmd_t const phy_cmd_config[] = { { mk_mii_end, } }; -/* Read remainder of PHY ID. -*/ +/* Read remainder of PHY ID. */ static void mii_discover_phy3(uint mii_reg, struct net_device *dev) { @@ -1447,8 +1397,7 @@ mii_discover_phy(uint mii_reg, struct net_device *dev) if (fep->phy_addr < 32) { if ((phytype = (mii_reg & 0xffff)) != 0xffff && phytype != 0) { - /* Got first part of ID, now get remainder. - */ + /* Got first part of ID, now get remainder */ fep->phy_id = phytype << 16; mii_queue(dev, mk_mii_read(MII_REG_PHYIR2), mii_discover_phy3); @@ -1468,8 +1417,7 @@ mii_discover_phy(uint mii_reg, struct net_device *dev) } } -/* This interrupt occurs when the PHY detects a link change. -*/ +/* This interrupt occurs when the PHY detects a link change */ #ifdef HAVE_mii_link_interrupt static irqreturn_t mii_link_interrupt(int irq, void * dev_id) @@ -1479,10 +1427,6 @@ mii_link_interrupt(int irq, void * dev_id) fec_phy_ack_intr(); -#if 0 - disable_irq(fep->mii_irq); /* disable now, enable later */ -#endif - mii_do_cmd(dev, fep->phy->ack_int); mii_do_cmd(dev, phy_cmd_relink); /* restart and display status */ @@ -1533,7 +1477,7 @@ fec_enet_open(struct net_device *dev) netif_start_queue(dev); fep->opened = 1; - return 0; /* Success */ + return 0; } static int @@ -1541,8 +1485,7 @@ fec_enet_close(struct net_device *dev) { struct fec_enet_private *fep = netdev_priv(dev); - /* Don't know what to do yet. - */ + /* Don't know what to do yet. */ fep->opened = 0; netif_stop_queue(dev); fec_stop(dev); @@ -1570,7 +1513,7 @@ static void set_multicast_list(struct net_device *dev) unsigned int i, j, bit, data, crc, tmp; unsigned char hash; - if (dev->flags&IFF_PROMISC) { + if (dev->flags & IFF_PROMISC) { tmp = readl(fep->hwp + FEC_R_CNTRL); tmp |= 0x8; writel(tmp, fep->hwp + FEC_R_CNTRL); @@ -1581,42 +1524,37 @@ static void set_multicast_list(struct net_device *dev) if (dev->flags & IFF_ALLMULTI) { /* Catch all multicast addresses, so set the - * filter to all 1's. + * filter to all 1's */ writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_HIGH); writel(0xffffffff, fep->hwp + FEC_GRP_HASH_TABLE_LOW); } else { - /* Clear filter and add the addresses in hash register. - */ + /* Clear filter and add the addresses in hash register + */ writel(0, fep->hwp + FEC_GRP_HASH_TABLE_HIGH); writel(0, fep->hwp + FEC_GRP_HASH_TABLE_LOW); dmi = dev->mc_list; - for (j = 0; j < dev->mc_count; j++, dmi = dmi->next) - { - /* Only support group multicast for now. - */ + for (j = 0; j < dev->mc_count; j++, dmi = dmi->next) { + /* Only support group multicast for now */ if (!(dmi->dmi_addr[0] & 1)) continue; - /* calculate crc32 value of mac address - */ + /* calculate crc32 value of mac address */ crc = 0xffffffff; - for (i = 0; i < dmi->dmi_addrlen; i++) - { + for (i = 0; i < dmi->dmi_addrlen; i++) { data = dmi->dmi_addr[i]; - for (bit = 0; bit < 8; bit++, data >>= 1) - { + for (bit = 0; bit < 8; bit++, data >>= 1) { crc = (crc >> 1) ^ (((crc ^ data) & 1) ? CRC32_POLY : 0); } } /* only upper 6 bits (HASH_BITS) are used - which point to specific bit in he hash registers - */ + * which point to specific bit in he hash registers + */ hash = (crc >> (32 - HASH_BITS)) & 0x3f; if (hash > 31) { @@ -1633,8 +1571,7 @@ static void set_multicast_list(struct net_device *dev) } } -/* Set a MAC change in hardware. - */ +/* Set a MAC change in hardware. */ static void fec_set_mac_address(struct net_device *dev) { @@ -1675,8 +1612,7 @@ int __init fec_enet_init(struct net_device *dev, int index) fep->hwp = (void __iomem *)dev->base_addr; fep->netdev = dev; - /* Whack a reset. We should wait for this. - */ + /* Whack a reset. We should wait for this. */ writel(1, fep->hwp + FEC_ECNTRL); udelay(10); @@ -1706,18 +1642,15 @@ int __init fec_enet_init(struct net_device *dev, int index) fep->skb_cur = fep->skb_dirty = 0; - /* Initialize the receive buffer descriptors. - */ + /* Initialize the receive buffer descriptors. */ bdp = fep->rx_bd_base; for (i=0; i<FEC_ENET_RX_PAGES; i++) { - /* Allocate a page. - */ + /* Allocate a page */ mem_addr = __get_free_page(GFP_KERNEL); /* XXX: missing check for allocation failure */ - /* Initialize the BD for every fragment in the page. - */ + /* Initialize the BD for every fragment in the page */ for (j=0; j<FEC_ENET_RX_FRPPG; j++) { bdp->cbd_sc = BD_ENET_RX_EMPTY; bdp->cbd_bufaddr = __pa(mem_addr); @@ -1726,13 +1659,11 @@ int __init fec_enet_init(struct net_device *dev, int index) } } - /* Set the last buffer to wrap. - */ + /* Set the last buffer to wrap */ bdp--; bdp->cbd_sc |= BD_SC_WRAP; - /* ...and the same for transmmit. - */ + /* ...and the same for transmit */ bdp = fep->tx_bd_base; for (i=0, j=FEC_ENET_TX_FRPPG; i<TX_RING_SIZE; i++) { if (j >= FEC_ENET_TX_FRPPG) { @@ -1744,20 +1675,17 @@ int __init fec_enet_init(struct net_device *dev, int index) } fep->tx_bounce[i] = (unsigned char *) mem_addr; - /* Initialize the BD for every fragment in the page. - */ + /* Initialize the BD for every fragment in the page */ bdp->cbd_sc = 0; bdp->cbd_bufaddr = 0; bdp++; } - /* Set the last buffer to wrap. - */ + /* Set the last buffer to wrap */ bdp--; bdp->cbd_sc |= BD_SC_WRAP; - /* Set receive and transmit descriptor base. - */ + /* Set receive and transmit descriptor base */ writel(fep->bd_dma, fep->hwp + FEC_R_DES_START); writel((unsigned long)fep->bd_dma + sizeof(struct bufdesc) * RX_RING_SIZE, fep->hwp + FEC_X_DES_START); @@ -1776,7 +1704,7 @@ int __init fec_enet_init(struct net_device *dev, int index) writel(0, fep->hwp + FEC_HASH_TABLE_LOW); #endif - /* The FEC Ethernet specific entries in the device structure. */ + /* The FEC Ethernet specific entries in the device structure */ dev->open = fec_enet_open; dev->hard_start_xmit = fec_enet_start_xmit; dev->tx_timeout = fec_timeout; @@ -1792,9 +1720,7 @@ int __init fec_enet_init(struct net_device *dev, int index) writel(OPT_FRAME_SIZE | 0x04, fep->hwp + FEC_R_CNTRL); writel(0, fep->hwp + FEC_X_CNTRL); - /* - * Set MII speed to 2.5 MHz - */ + /* Set MII speed to 2.5 MHz */ fep->phy_speed = ((((clk_get_rate(fep->clk) / 2 + 4999999) / 2500000) / 2) & 0x3F) << 1; writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED); @@ -1853,8 +1779,8 @@ fec_restart(struct net_device *dev, int duplex) /* Reset SKB transmit buffers. */ fep->skb_cur = fep->skb_dirty = 0; - for (i=0; i<=TX_RING_MOD_MASK; i++) { - if (fep->tx_skbuff[i] != NULL) { + for (i = 0; i <= TX_RING_MOD_MASK; i++) { + if (fep->tx_skbuff[i]) { dev_kfree_skb_any(fep->tx_skbuff[i]); fep->tx_skbuff[i] = NULL; } @@ -1862,20 +1788,20 @@ fec_restart(struct net_device *dev, int duplex) /* Initialize the receive buffer descriptors. */ bdp = fep->rx_bd_base; - for (i=0; i<RX_RING_SIZE; i++) { + for (i = 0; i < RX_RING_SIZE; i++) { /* Initialize the BD for every fragment in the page. */ bdp->cbd_sc = BD_ENET_RX_EMPTY; bdp++; } - /* Set the last buffer to wrap. */ + /* Set the last buffer to wrap */ bdp--; bdp->cbd_sc |= BD_SC_WRAP; - /* ...and the same for transmmit. */ + /* ...and the same for transmit */ bdp = fep->tx_bd_base; - for (i=0; i<TX_RING_SIZE; i++) { + for (i = 0; i < TX_RING_SIZE; i++) { /* Initialize the BD for every fragment in the page. */ bdp->cbd_sc = 0; @@ -1883,11 +1809,11 @@ fec_restart(struct net_device *dev, int duplex) bdp++; } - /* Set the last buffer to wrap. */ + /* Set the last buffer to wrap */ bdp--; bdp->cbd_sc |= BD_SC_WRAP; - /* Enable MII mode. */ + /* Enable MII mode */ if (duplex) { /* MII enable / FD enable */ writel(OPT_FRAME_SIZE | 0x04, fep->hwp + FEC_R_CNTRL); @@ -1899,14 +1825,14 @@ fec_restart(struct net_device *dev, int duplex) } fep->full_duplex = duplex; - /* Set MII speed. */ + /* Set MII speed */ writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED); - /* And last, enable the transmit and receive processing. */ + /* And last, enable the transmit and receive processing */ writel(2, fep->hwp + FEC_ECNTRL); writel(0, fep->hwp + FEC_R_DES_ACTIVE); - /* Enable interrupts we wish to service. */ + /* Enable interrupts we wish to service */ writel(FEC_ENET_TXF | FEC_ENET_RXF | FEC_ENET_MII, fep->hwp + FEC_IMASK); } @@ -1916,9 +1842,7 @@ fec_stop(struct net_device *dev) { struct fec_enet_private *fep = netdev_priv(dev); - /* - ** We cannot expect a graceful transmit stop without link !!! - */ + /* We cannot expect a graceful transmit stop without link !!! */ if (fep->link) { writel(1, fep->hwp + FEC_X_CNTRL); /* Graceful transmit stop */ udelay(10); |
