ethernet.c
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:38k
- /* $Id: ethernet.c,v 1.22 2002/01/30 07:48:22 matsfg Exp $
- *
- * e100net.c: A network driver for the ETRAX 100LX network controller.
- *
- * Copyright (c) 1998-2001 Axis Communications AB.
- *
- * The outline of this driver comes from skeleton.c.
- *
- * $Log: ethernet.c,v $
- * Revision 1.22 2002/01/30 07:48:22 matsfg
- * Initiate R_NETWORK_TR_CTRL
- *
- * Revision 1.21 2001/11/23 11:54:49 starvik
- * Added IFF_PROMISC and IFF_ALLMULTI handling in set_multicast_list
- * Removed compiler warnings
- *
- * Revision 1.20 2001/11/12 19:26:00 pkj
- * * Corrected e100_negotiate() to not assign half to current_duplex when
- * it was supposed to compare them...
- * * Cleaned up failure handling in e100_open().
- * * Fixed compiler warnings.
- *
- * Revision 1.19 2001/11/09 07:43:09 starvik
- * Added full duplex support
- * Added ioctl to set speed and duplex
- * Clear LED timer only runs when LED is lit
- *
- * Revision 1.18 2001/10/03 14:40:43 jonashg
- * Update rx_bytes counter.
- *
- * Revision 1.17 2001/06/11 12:43:46 olof
- * Modified defines for network LED behavior
- *
- * Revision 1.16 2001/05/30 06:12:46 markusl
- * TxDesc.next should not be set to NULL
- *
- * Revision 1.15 2001/05/29 10:27:04 markusl
- * Updated after review remarks:
- * +Use IO_EXTRACT
- * +Handle underrun
- *
- * Revision 1.14 2001/05/29 09:20:14 jonashg
- * Use driver name on printk output so one can tell which driver that complains.
- *
- * Revision 1.13 2001/05/09 12:35:59 johana
- * Use DMA_NBR and IRQ_NBR defines from dma.h and irq.h
- *
- * Revision 1.12 2001/04/05 11:43:11 tobiasa
- * Check dev before panic.
- *
- * Revision 1.11 2001/04/04 11:21:05 markusl
- * Updated according to review remarks
- *
- * Revision 1.10 2001/03/26 16:03:06 bjornw
- * Needs linux/config.h
- *
- * Revision 1.9 2001/03/19 14:47:48 pkj
- * * Make sure there is always a pause after the network LEDs are
- * changed so they will not look constantly lit during heavy traffic.
- * * Always use HZ when setting times relative to jiffies.
- * * Use LED_NETWORK_SET() when setting the network LEDs.
- *
- * Revision 1.8 2001/02/27 13:52:48 bjornw
- * malloc.h -> slab.h
- *
- * Revision 1.7 2001/02/23 13:46:38 bjornw
- * Spellling check
- *
- * Revision 1.6 2001/01/26 15:21:04 starvik
- * Don't disable interrupts while reading MDIO registers (MDIO is slow)
- * Corrected promiscuous mode
- * Improved deallocation of IRQs ("ifconfig eth0 down" now works)
- *
- * Revision 1.5 2000/11/29 17:22:22 bjornw
- * Get rid of the udword types legacy stuff
- *
- * Revision 1.4 2000/11/22 16:36:09 bjornw
- * Please marketing by using the correct case when spelling Etrax.
- *
- * Revision 1.3 2000/11/21 16:43:04 bjornw
- * Minor short->int change
- *
- * Revision 1.2 2000/11/08 14:27:57 bjornw
- * 2.4 port
- *
- * Revision 1.1 2000/11/06 13:56:00 bjornw
- * Verbatim copy of the 1.24 version of e100net.c from elinux
- *
- * Revision 1.24 2000/10/04 15:55:23 bjornw
- * * Use virt_to_phys etc. for DMA addresses
- * * Removed bogus CHECKSUM_UNNECESSARY
- *
- *
- */
- #include <linux/config.h>
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/delay.h>
- #include <linux/types.h>
- #include <linux/fcntl.h>
- #include <linux/interrupt.h>
- #include <linux/ptrace.h>
- #include <linux/ioport.h>
- #include <linux/in.h>
- #include <linux/slab.h>
- #include <linux/string.h>
- #include <linux/spinlock.h>
- #include <linux/errno.h>
- #include <linux/init.h>
- #include <linux/netdevice.h>
- #include <linux/etherdevice.h>
- #include <linux/skbuff.h>
- #include <asm/svinto.h> /* DMA and register descriptions */
- #include <asm/io.h> /* LED_* I/O functions */
- #include <asm/irq.h>
- #include <asm/dma.h>
- #include <asm/system.h>
- #include <asm/bitops.h>
- #include <asm/ethernet.h>
- //#define ETHDEBUG
- #define D(x)
- /*
- * The name of the card. Is used for messages and in the requests for
- * io regions, irqs and dma channels
- */
- static const char* cardname = "ETRAX 100LX built-in ethernet controller";
- /* A default ethernet address. Highlevel SW will set the real one later */
- static struct sockaddr default_mac = {
- 0,
- { 0x00, 0x40, 0x8C, 0xCD, 0x00, 0x00 }
- };
- /* Information that need to be kept for each board. */
- struct net_local {
- struct net_device_stats stats;
- /* Tx control lock. This protects the transmit buffer ring
- * state along with the "tx full" state of the driver. This
- * means all netif_queue flow control actions are protected
- * by this lock as well.
- */
- spinlock_t lock;
- };
- /* Duplex settings */
- enum duplex
- {
- half,
- full,
- autoneg
- };
- /* Dma descriptors etc. */
- #define RX_BUF_SIZE 32768
- #define MAX_MEDIA_DATA_SIZE 1518
- #define MIN_PACKET_LEN 46
- #define ETHER_HEAD_LEN 14
- /*
- ** MDIO constants.
- */
- #define MDIO_BASE_STATUS_REG 0x1
- #define MDIO_BASE_CONTROL_REG 0x0
- #define MDIO_BC_NEGOTIATE 0x0200
- #define MDIO_BC_FULL_DUPLEX_MASK 0x0100
- #define MDIO_BC_AUTO_NEG_MASK 0x1000
- #define MDIO_BC_SPEED_SELECT_MASK 0x2000
- #define MDIO_ADVERTISMENT_REG 0x4
- #define MDIO_ADVERT_100_FD 0x100
- #define MDIO_ADVERT_100_HD 0x080
- #define MDIO_ADVERT_10_FD 0x040
- #define MDIO_ADVERT_10_HD 0x020
- #define MDIO_LINK_UP_MASK 0x4
- #define MDIO_START 0x1
- #define MDIO_READ 0x2
- #define MDIO_WRITE 0x1
- #define MDIO_PREAMBLE 0xfffffffful
- /* Broadcom specific */
- #define MDIO_AUX_CTRL_STATUS_REG 0x18
- #define MDIO_FULL_DUPLEX_IND 0x1
- #define MDIO_SPEED 0x2
- #define MDIO_PHYS_ADDR 0x0
- /* Network flash constants */
- #define NET_FLASH_TIME (HZ/50) /* 20 ms */
- #define NET_FLASH_PAUSE (HZ/100) /* 10 ms */
- #define NET_LINK_UP_CHECK_INTERVAL (2*HZ) /* 2 s */
- #define NET_DUPLEX_CHECK_INTERVAL (2*HZ) /* 2 s */
- #define NO_NETWORK_ACTIVITY 0
- #define NETWORK_ACTIVITY 1
- #define RX_DESC_BUF_SIZE 256
- #define NBR_OF_RX_DESC (RX_BUF_SIZE /
- RX_DESC_BUF_SIZE)
- #define GET_BIT(bit,val) (((val) >> (bit)) & 0x01)
- /* Define some macros to access ETRAX 100 registers */
- #define SETF(var, reg, field, val) var = (var & ~IO_MASK(##reg##, field)) |
- IO_FIELD(##reg##, field, val)
- #define SETS(var, reg, field, val) var = (var & ~IO_MASK(##reg##, field)) |
- IO_STATE(##reg##, field, val)
- static etrax_dma_descr *myNextRxDesc; /* Points to the next descriptor to
- to be processed */
- static etrax_dma_descr *myLastRxDesc; /* The last processed descriptor */
- static etrax_dma_descr *myPrevRxDesc; /* The descriptor right before myNextRxDesc */
- static unsigned char RxBuf[RX_BUF_SIZE];
- static etrax_dma_descr RxDescList[NBR_OF_RX_DESC] __attribute__ ((aligned(4)));
- static etrax_dma_descr TxDesc __attribute__ ((aligned(4)));
- static struct sk_buff *tx_skb;
- static unsigned int network_rec_config_shadow = 0;
- /* Network speed indication. */
- static struct timer_list speed_timer;
- static struct timer_list clear_led_timer;
- static int current_speed; /* Speed read from tranceiver */
- static int current_speed_selection; /* Speed selected by user */
- static int led_next_time;
- static int led_active;
- /* Duplex */
- static struct timer_list duplex_timer;
- static int full_duplex;
- static enum duplex current_duplex;
- /* Index to functions, as function prototypes. */
- static int etrax_ethernet_init(struct net_device *dev);
- static int e100_open(struct net_device *dev);
- static int e100_set_mac_address(struct net_device *dev, void *addr);
- static int e100_send_packet(struct sk_buff *skb, struct net_device *dev);
- static void e100rx_interrupt(int irq, void *dev_id, struct pt_regs *regs);
- static void e100tx_interrupt(int irq, void *dev_id, struct pt_regs *regs);
- static void e100nw_interrupt(int irq, void *dev_id, struct pt_regs *regs);
- static void e100_rx(struct net_device *dev);
- static int e100_close(struct net_device *dev);
- static int e100_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
- static void e100_tx_timeout(struct net_device *dev);
- static struct net_device_stats *e100_get_stats(struct net_device *dev);
- static void set_multicast_list(struct net_device *dev);
- static void e100_hardware_send_packet(char *buf, int length);
- static void update_rx_stats(struct net_device_stats *);
- static void update_tx_stats(struct net_device_stats *);
- static void e100_check_speed(unsigned long dummy);
- static void e100_set_speed(unsigned long speed);
- static void e100_check_duplex(unsigned long dummy);
- static void e100_set_duplex(enum duplex);
- static void e100_negotiate(void);
- static unsigned short e100_get_mdio_reg(unsigned char reg_num);
- static void e100_send_mdio_cmd(unsigned short cmd, int write_cmd);
- static void e100_send_mdio_bit(unsigned char bit);
- static unsigned char e100_receive_mdio_bit(void);
- static void e100_reset_tranceiver(void);
- static void e100_clear_network_leds(unsigned long dummy);
- static void e100_set_network_leds(int active);
- #define tx_done(dev) (*R_DMA_CH0_CMD == 0)
- /*
- * Check for a network adaptor of this type, and return '0' if one exists.
- * If dev->base_addr == 0, probe all likely locations.
- * If dev->base_addr == 1, always return failure.
- * If dev->base_addr == 2, allocate space for the device and return success
- * (detachable devices only).
- */
- static int __init
- etrax_ethernet_init(struct net_device *dev)
- {
- int i;
- int anOffset = 0;
- printk("ETRAX 100LX 10/100MBit ethernet v2.0 (c) 2000-2001 Axis Communications ABn");
- dev->base_addr = (unsigned int)R_NETWORK_SA_0; /* just to have something to show */
- printk("%s initializedn", dev->name);
- /* make Linux aware of the new hardware */
- if (!dev) {
- printk(KERN_WARNING "%s: dev == NULL. Should this happen?n",
- cardname);
- dev = init_etherdev(dev, sizeof(struct net_local));
- if (!dev)
- panic("init_etherdev failedn");
- }
- /* setup generic handlers and stuff in the dev struct */
- ether_setup(dev);
- /* make room for the local structure containing stats etc */
- dev->priv = kmalloc(sizeof(struct net_local), GFP_KERNEL);
- if (dev->priv == NULL)
- return -ENOMEM;
- memset(dev->priv, 0, sizeof(struct net_local));
- /* now setup our etrax specific stuff */
- dev->irq = NETWORK_DMA_RX_IRQ_NBR; /* we really use DMATX as well... */
- dev->dma = NETWORK_RX_DMA_NBR;
- /* fill in our handlers so the network layer can talk to us in the future */
- dev->open = e100_open;
- dev->hard_start_xmit = e100_send_packet;
- dev->stop = e100_close;
- dev->get_stats = e100_get_stats;
- dev->set_multicast_list = set_multicast_list;
- dev->set_mac_address = e100_set_mac_address;
- dev->do_ioctl = e100_ioctl;
- dev->tx_timeout = e100_tx_timeout;
- /* set the default MAC address */
- e100_set_mac_address(dev, &default_mac);
- /* Initialise the list of Etrax DMA-descriptors */
- /* Initialise receive descriptors */
- for (i = 0; i < (NBR_OF_RX_DESC - 1); i++) {
- RxDescList[i].ctrl = 0;
- RxDescList[i].sw_len = RX_DESC_BUF_SIZE;
- RxDescList[i].next = virt_to_phys(&RxDescList[i + 1]);
- RxDescList[i].buf = virt_to_phys(RxBuf + anOffset);
- RxDescList[i].status = 0;
- RxDescList[i].hw_len = 0;
- anOffset += RX_DESC_BUF_SIZE;
- }
- RxDescList[i].ctrl = d_eol;
- RxDescList[i].sw_len = RX_DESC_BUF_SIZE;
- RxDescList[i].next = virt_to_phys(&RxDescList[0]);
- RxDescList[i].buf = virt_to_phys(RxBuf + anOffset);
- RxDescList[i].status = 0;
- RxDescList[i].hw_len = 0;
- /* Initialise initial pointers */
- myNextRxDesc = &RxDescList[0];
- myLastRxDesc = &RxDescList[NBR_OF_RX_DESC - 1];
- myPrevRxDesc = &RxDescList[NBR_OF_RX_DESC - 1];
- /* Initialize speed indicator stuff. */
- current_speed = 10;
- current_speed_selection = 0; /* Auto */
- speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL;
- speed_timer.function = e100_check_speed;
- add_timer(&speed_timer);
-
- clear_led_timer.function = e100_clear_network_leds;
-
- full_duplex = 0;
- current_duplex = autoneg;
- duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL;
- duplex_timer.function = e100_check_duplex;
- add_timer(&duplex_timer);
- return 0;
- }
- /* set MAC address of the interface. called from the core after a
- * SIOCSIFADDR ioctl, and from the bootup above.
- */
- static int
- e100_set_mac_address(struct net_device *dev, void *p)
- {
- struct sockaddr *addr = p;
- int i;
- /* remember it */
- memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
- /* Write it to the hardware.
- * Note the way the address is wrapped:
- * *R_NETWORK_SA_0 = a0_0 | (a0_1 << 8) | (a0_2 << 16) | (a0_3 << 24);
- * *R_NETWORK_SA_1 = a0_4 | (a0_5 << 8);
- */
-
- *R_NETWORK_SA_0 = dev->dev_addr[0] | (dev->dev_addr[1] << 8) |
- (dev->dev_addr[2] << 16) | (dev->dev_addr[3] << 24);
- *R_NETWORK_SA_1 = dev->dev_addr[4] | (dev->dev_addr[5] << 8);
- *R_NETWORK_SA_2 = 0;
- /* show it in the log as well */
- printk("%s: changed MAC to ", dev->name);
- for (i = 0; i < 5; i++)
- printk("%02X:", dev->dev_addr[i]);
- printk("%02Xn", dev->dev_addr[i]);
- return 0;
- }
- /*
- * Open/initialize the board. This is called (in the current kernel)
- * sometime after booting when the 'ifconfig' program is run.
- *
- * This routine should set everything up anew at each open, even
- * registers that "should" only need to be set once at boot, so that
- * there is non-reboot way to recover if something goes wrong.
- */
- static int
- e100_open(struct net_device *dev)
- {
- unsigned long flags;
- /* disable the ethernet interface while we configure it */
- *R_NETWORK_GEN_CONFIG =
- IO_STATE(R_NETWORK_GEN_CONFIG, phy, mii_clk) |
- IO_STATE(R_NETWORK_GEN_CONFIG, enable, off);
- /* enable the MDIO output pin */
- *R_NETWORK_MGM_CTRL = IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable);
- *R_IRQ_MASK0_CLR =
- IO_STATE(R_IRQ_MASK0_CLR, overrun, clr) |
- IO_STATE(R_IRQ_MASK0_CLR, underrun, clr) |
- IO_STATE(R_IRQ_MASK0_CLR, excessive_col, clr);
-
- /* clear dma0 and 1 eop and descr irq masks */
- *R_IRQ_MASK2_CLR =
- IO_STATE(R_IRQ_MASK2_CLR, dma0_descr, clr) |
- IO_STATE(R_IRQ_MASK2_CLR, dma0_eop, clr) |
- IO_STATE(R_IRQ_MASK2_CLR, dma1_descr, clr) |
- IO_STATE(R_IRQ_MASK2_CLR, dma1_eop, clr);
- /* Reset and wait for the DMA channels */
- RESET_DMA(NETWORK_TX_DMA_NBR);
- RESET_DMA(NETWORK_RX_DMA_NBR);
- WAIT_DMA(NETWORK_TX_DMA_NBR);
- WAIT_DMA(NETWORK_RX_DMA_NBR);
- /* Initialise the etrax network controller */
- /* allocate the irq corresponding to the receiving DMA */
- if (request_irq(NETWORK_DMA_RX_IRQ_NBR, e100rx_interrupt, 0,
- cardname, (void *)dev)) {
- goto grace_exit0;
- }
- /* allocate the irq corresponding to the transmitting DMA */
- if (request_irq(NETWORK_DMA_TX_IRQ_NBR, e100tx_interrupt, 0,
- cardname, (void *)dev)) {
- goto grace_exit1;
- }
- /* allocate the irq corresponding to the network errors etc */
- if (request_irq(NETWORK_STATUS_IRQ_NBR, e100nw_interrupt, 0,
- cardname, (void *)dev)) {
- goto grace_exit2;
- }
- /*
- * Always allocate the DMA channels after the IRQ,
- * and clean up on failure.
- */
- if (request_dma(NETWORK_TX_DMA_NBR, cardname)) {
- goto grace_exit3;
- }
- if (request_dma(NETWORK_RX_DMA_NBR, cardname)) {
- goto grace_exit4;
- }
- /* give the HW an idea of what MAC address we want */
- *R_NETWORK_SA_0 = dev->dev_addr[0] | (dev->dev_addr[1] << 8) |
- (dev->dev_addr[2] << 16) | (dev->dev_addr[3] << 24);
- *R_NETWORK_SA_1 = dev->dev_addr[4] | (dev->dev_addr[5] << 8);
- *R_NETWORK_SA_2 = 0;
- #if 0
- /* use promiscuous mode for testing */
- *R_NETWORK_GA_0 = 0xffffffff;
- *R_NETWORK_GA_1 = 0xffffffff;
- *R_NETWORK_REC_CONFIG = 0xd; /* broadcast rec, individ. rec, ma0 enabled */
- #else
- SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, broadcast, receive);
- SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, ma0, enable);
- SETF(network_rec_config_shadow, R_NETWORK_REC_CONFIG, duplex, full_duplex);
- *R_NETWORK_REC_CONFIG = network_rec_config_shadow;
- #endif
- *R_NETWORK_GEN_CONFIG =
- IO_STATE(R_NETWORK_GEN_CONFIG, phy, mii_clk) |
- IO_STATE(R_NETWORK_GEN_CONFIG, enable, on);
- *R_NETWORK_TR_CTRL =
- IO_STATE(R_NETWORK_TR_CTRL, clr_error, clr) |
- IO_STATE(R_NETWORK_TR_CTRL, delay, none) |
- IO_STATE(R_NETWORK_TR_CTRL, cancel, dont) |
- IO_STATE(R_NETWORK_TR_CTRL, cd, enable) |
- IO_STATE(R_NETWORK_TR_CTRL, retry, enable) |
- IO_STATE(R_NETWORK_TR_CTRL, pad, enable) |
- IO_STATE(R_NETWORK_TR_CTRL, crc, enable);
- save_flags(flags);
- cli();
- /* enable the irq's for ethernet DMA */
- *R_IRQ_MASK2_SET =
- IO_STATE(R_IRQ_MASK2_SET, dma0_eop, set) |
- IO_STATE(R_IRQ_MASK2_SET, dma1_eop, set);
- *R_IRQ_MASK0_SET =
- IO_STATE(R_IRQ_MASK0_SET, overrun, set) |
- IO_STATE(R_IRQ_MASK0_SET, underrun, set) |
- IO_STATE(R_IRQ_MASK0_SET, excessive_col, set);
- tx_skb = 0;
- /* make sure the irqs are cleared */
- *R_DMA_CH0_CLR_INTR = IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop, do);
- *R_DMA_CH1_CLR_INTR = IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do);
- /* make sure the rec and transmit error counters are cleared */
- (void)*R_REC_COUNTERS; /* dummy read */
- (void)*R_TR_COUNTERS; /* dummy read */
- /* start the receiving DMA channel so we can receive packets from now on */
- *R_DMA_CH1_FIRST = virt_to_phys(myNextRxDesc);
- *R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, start);
- restore_flags(flags);
-
- /* We are now ready to accept transmit requeusts from
- * the queueing layer of the networking.
- */
- netif_start_queue(dev);
- return 0;
- grace_exit4:
- free_dma(NETWORK_TX_DMA_NBR);
- grace_exit3:
- free_irq(NETWORK_STATUS_IRQ_NBR, (void *)dev);
- grace_exit2:
- free_irq(NETWORK_DMA_TX_IRQ_NBR, (void *)dev);
- grace_exit1:
- free_irq(NETWORK_DMA_RX_IRQ_NBR, (void *)dev);
- grace_exit0:
- return -EAGAIN;
- }
- static void
- e100_check_speed(unsigned long dummy)
- {
- unsigned long data;
- int old_speed = current_speed;
- data = e100_get_mdio_reg(MDIO_BASE_STATUS_REG);
- if (!(data & MDIO_LINK_UP_MASK)) {
- current_speed = 0;
- } else {
- data = e100_get_mdio_reg(MDIO_AUX_CTRL_STATUS_REG);
- current_speed = (data & MDIO_SPEED ? 100 : 10);
- }
-
- if (old_speed != current_speed)
- e100_set_network_leds(NO_NETWORK_ACTIVITY);
- /* Reinitialize the timer. */
- speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL;
- add_timer(&speed_timer);
- }
- static void
- e100_negotiate(void)
- {
- unsigned short cmd;
- unsigned short data = e100_get_mdio_reg(MDIO_ADVERTISMENT_REG);
- int bitCounter;
- /* Discard old speed and duplex settings */
- data &= ~(MDIO_ADVERT_100_HD | MDIO_ADVERT_100_FD |
- MDIO_ADVERT_10_FD | MDIO_ADVERT_10_HD);
-
- switch (current_speed_selection) {
- case 10 :
- if (current_duplex == full)
- data |= MDIO_ADVERT_10_FD;
- else if (current_duplex == half)
- data |= MDIO_ADVERT_10_HD;
- else
- data |= MDIO_ADVERT_10_HD | MDIO_ADVERT_10_FD;
- break;
- case 100 :
- if (current_duplex == full)
- data |= MDIO_ADVERT_100_FD;
- else if (current_duplex == half)
- data |= MDIO_ADVERT_100_HD;
- else
- data |= MDIO_ADVERT_100_HD | MDIO_ADVERT_100_FD;
- break;
- case 0 : /* Auto */
- if (current_duplex == full)
- data |= MDIO_ADVERT_100_FD | MDIO_ADVERT_10_FD;
- else if (current_duplex == half)
- data |= MDIO_ADVERT_100_HD | MDIO_ADVERT_10_HD;
- else
- data |= MDIO_ADVERT_100_HD | MDIO_ADVERT_100_FD | MDIO_ADVERT_10_FD | MDIO_ADVERT_10_HD;
- break;
- default : /* assume autoneg speed and duplex */
- data |= MDIO_ADVERT_100_HD | MDIO_ADVERT_100_FD |
- MDIO_ADVERT_10_FD | MDIO_ADVERT_10_HD;
- }
- cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (MDIO_PHYS_ADDR << 7) |
- (MDIO_ADVERTISMENT_REG<< 2);
- e100_send_mdio_cmd(cmd, 1);
- /* Data... */
- for (bitCounter=15; bitCounter>=0 ; bitCounter--) {
- e100_send_mdio_bit(GET_BIT(bitCounter, data));
- }
- /* Renegotiate with link partner */
- data = e100_get_mdio_reg(MDIO_BASE_CONTROL_REG);
- data |= MDIO_BC_NEGOTIATE;
- cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (MDIO_PHYS_ADDR << 7) |
- (MDIO_BASE_CONTROL_REG<< 2);
- e100_send_mdio_cmd(cmd, 1);
- /* Data... */
- for (bitCounter=15; bitCounter>=0 ; bitCounter--) {
- e100_send_mdio_bit(GET_BIT(bitCounter, data));
- }
- }
- static void
- e100_set_speed(unsigned long speed)
- {
- current_speed_selection = speed;
- e100_negotiate();
- }
- static void
- e100_check_duplex(unsigned long dummy)
- {
- unsigned long data;
- data = e100_get_mdio_reg(MDIO_AUX_CTRL_STATUS_REG);
-
- if (data & MDIO_FULL_DUPLEX_IND) {
- if (!full_duplex) { /* Duplex changed to full? */
- full_duplex = 1;
- SETF(network_rec_config_shadow, R_NETWORK_REC_CONFIG, duplex, full_duplex);
- *R_NETWORK_REC_CONFIG = network_rec_config_shadow;
- }
- } else { /* half */
- if (full_duplex) { /* Duplex changed to half? */
- full_duplex = 0;
- SETF(network_rec_config_shadow, R_NETWORK_REC_CONFIG, duplex, full_duplex);
- *R_NETWORK_REC_CONFIG = network_rec_config_shadow;
- }
- }
- /* Reinitialize the timer. */
- duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL;
- add_timer(&duplex_timer);
- }
- static void
- e100_set_duplex(enum duplex new_duplex)
- {
- current_duplex = new_duplex;
- e100_negotiate();
- }
- static unsigned short
- e100_get_mdio_reg(unsigned char reg_num)
- {
- unsigned short cmd; /* Data to be sent on MDIO port */
- unsigned short data; /* Data read from MDIO */
- int bitCounter;
-
- /* Start of frame, OP Code, Physical Address, Register Address */
- cmd = (MDIO_START << 14) | (MDIO_READ << 12) | (MDIO_PHYS_ADDR << 7) |
- (reg_num << 2);
-
- e100_send_mdio_cmd(cmd, 0);
-
- data = 0;
-
- /* Data... */
- for (bitCounter=15; bitCounter>=0 ; bitCounter--) {
- data |= (e100_receive_mdio_bit() << bitCounter);
- }
- return data;
- }
- static void
- e100_send_mdio_cmd(unsigned short cmd, int write_cmd)
- {
- int bitCounter;
- unsigned char data = 0x2;
-
- /* Preamble */
- for (bitCounter = 31; bitCounter>= 0; bitCounter--)
- e100_send_mdio_bit(GET_BIT(bitCounter, MDIO_PREAMBLE));
- for (bitCounter = 15; bitCounter >= 2; bitCounter--)
- e100_send_mdio_bit(GET_BIT(bitCounter, cmd));
- /* Turnaround */
- for (bitCounter = 1; bitCounter >= 0 ; bitCounter--)
- if (write_cmd)
- e100_send_mdio_bit(GET_BIT(bitCounter, data));
- else
- e100_receive_mdio_bit();
- }
- static void
- e100_send_mdio_bit(unsigned char bit)
- {
- *R_NETWORK_MGM_CTRL =
- IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable) |
- IO_FIELD(R_NETWORK_MGM_CTRL, mdio, bit);
- udelay(1);
- *R_NETWORK_MGM_CTRL =
- IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable) |
- IO_MASK(R_NETWORK_MGM_CTRL, mdck) |
- IO_FIELD(R_NETWORK_MGM_CTRL, mdio, bit);
- udelay(1);
- }
- static unsigned char
- e100_receive_mdio_bit()
- {
- unsigned char bit;
- *R_NETWORK_MGM_CTRL = 0;
- bit = IO_EXTRACT(R_NETWORK_STAT, mdio, *R_NETWORK_STAT);
- udelay(1);
- *R_NETWORK_MGM_CTRL = IO_MASK(R_NETWORK_MGM_CTRL, mdck);
- udelay(1);
- return bit;
- }
- static void
- e100_reset_tranceiver(void)
- {
- unsigned short cmd;
- unsigned short data;
- int bitCounter;
- data = e100_get_mdio_reg(MDIO_BASE_CONTROL_REG);
- cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (MDIO_PHYS_ADDR << 7) | (MDIO_BASE_CONTROL_REG << 2);
- e100_send_mdio_cmd(cmd, 1);
-
- data |= 0x8000;
-
- for (bitCounter = 15; bitCounter >= 0 ; bitCounter--) {
- e100_send_mdio_bit(GET_BIT(bitCounter, data));
- }
- }
- /* Called by upper layers if they decide it took too long to complete
- * sending a packet - we need to reset and stuff.
- */
- static void
- e100_tx_timeout(struct net_device *dev)
- {
- struct net_local *np = (struct net_local *)dev->priv;
- printk(KERN_WARNING "%s: transmit timed out, %s?n", dev->name,
- tx_done(dev) ? "IRQ problem" : "network cable problem");
-
- /* remember we got an error */
-
- np->stats.tx_errors++;
-
- /* reset the TX DMA in case it has hung on something */
-
- RESET_DMA(NETWORK_TX_DMA_NBR);
- WAIT_DMA(NETWORK_TX_DMA_NBR);
-
- /* Reset the tranceiver. */
-
- e100_reset_tranceiver();
-
- /* and get rid of the packet that never got an interrupt */
-
- dev_kfree_skb(tx_skb);
- tx_skb = 0;
-
- /* tell the upper layers we're ok again */
-
- netif_wake_queue(dev);
- }
- /* This will only be invoked if the driver is _not_ in XOFF state.
- * What this means is that we need not check it, and that this
- * invariant will hold if we make sure that the netif_*_queue()
- * calls are done at the proper times.
- */
- static int
- e100_send_packet(struct sk_buff *skb, struct net_device *dev)
- {
- struct net_local *np = (struct net_local *)dev->priv;
- int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
- unsigned char *buf = skb->data;
-
- #ifdef ETHDEBUG
- printk("send packet len %dn", length);
- #endif
- spin_lock_irq(&np->lock); /* protect from tx_interrupt */
- tx_skb = skb; /* remember it so we can free it in the tx irq handler later */
- dev->trans_start = jiffies;
-
- e100_hardware_send_packet(buf, length);
- /* this simple TX driver has only one send-descriptor so we're full
- * directly. If this had a send-ring instead, we would only do this if
- * the ring got full.
- */
- netif_stop_queue(dev);
- spin_unlock_irq(&np->lock);
- return 0;
- }
- /*
- * The typical workload of the driver:
- * Handle the network interface interrupts.
- */
- static void
- e100rx_interrupt(int irq, void *dev_id, struct pt_regs * regs)
- {
- struct net_device *dev = (struct net_device *)dev_id;
- unsigned long irqbits = *R_IRQ_MASK2_RD;
-
- if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma1_eop, active)) {
- /* acknowledge the eop interrupt */
- *R_DMA_CH1_CLR_INTR = IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do);
- /* check if one or more complete packets were indeed received */
- while (*R_DMA_CH1_FIRST != virt_to_phys(myNextRxDesc)) {
- /* Take out the buffer and give it to the OS, then
- * allocate a new buffer to put a packet in.
- */
- e100_rx(dev);
- ((struct net_local *)dev->priv)->stats.rx_packets++;
- /* restart/continue on the channel, for safety */
- *R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, restart);
- /* clear dma channel 1 eop/descr irq bits */
- *R_DMA_CH1_CLR_INTR =
- IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do) |
- IO_STATE(R_DMA_CH1_CLR_INTR, clr_descr, do);
-
- /* now, we might have gotten another packet
- so we have to loop back and check if so */
- }
- }
- }
- /* the transmit dma channel interrupt
- *
- * this is supposed to free the skbuff which was pending during transmission,
- * and inform the kernel that we can send one more buffer
- */
- static void
- e100tx_interrupt(int irq, void *dev_id, struct pt_regs * regs)
- {
- struct net_device *dev = (struct net_device *)dev_id;
- unsigned long irqbits = *R_IRQ_MASK2_RD;
- struct net_local *np = (struct net_local *)dev->priv;
- /* check for a dma0_eop interrupt */
- if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma0_eop, active)) {
- /* This protects us from concurrent execution of
- * our dev->hard_start_xmit function above.
- */
- spin_lock(&np->lock);
-
- /* acknowledge the eop interrupt */
- *R_DMA_CH0_CLR_INTR = IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop, do);
- if (*R_DMA_CH0_FIRST == 0 && tx_skb) {
- np->stats.tx_bytes += tx_skb->len;
- np->stats.tx_packets++;
- /* dma is ready with the transmission of the data in tx_skb, so now
- we can release the skb memory */
- dev_kfree_skb_irq(tx_skb);
- tx_skb = 0;
- netif_wake_queue(dev);
- } else {
- printk(KERN_WARNING "%s: tx weird interruptn",
- cardname);
- }
- spin_unlock(&np->lock);
- }
- }
- static void
- e100nw_interrupt(int irq, void *dev_id, struct pt_regs * regs)
- {
- struct net_device *dev = (struct net_device *)dev_id;
- struct net_local *np = (struct net_local *)dev->priv;
- unsigned long irqbits = *R_IRQ_MASK0_RD;
- /* check for underrun irq */
- if (irqbits & IO_STATE(R_IRQ_MASK0_RD, underrun, active)) {
- *R_NETWORK_TR_CTRL = IO_STATE(R_NETWORK_TR_CTRL, clr_error, clr);
- np->stats.tx_errors++;
- D(printk("ethernet receiver underrun!n"));
- }
- /* check for overrun irq */
- if (irqbits & IO_STATE(R_IRQ_MASK0_RD, overrun, active)) {
- update_rx_stats(&np->stats); /* this will ack the irq */
- D(printk("ethernet receiver overrun!n"));
- }
- /* check for excessive collision irq */
- if (irqbits & IO_STATE(R_IRQ_MASK0_RD, excessive_col, active)) {
- *R_NETWORK_TR_CTRL = IO_STATE(R_NETWORK_TR_CTRL, clr_error, clr);
- np->stats.tx_errors++;
- D(printk("ethernet excessive collisions!n"));
- }
- }
- /* We have a good packet(s), get it/them out of the buffers. */
- static void
- e100_rx(struct net_device *dev)
- {
- struct sk_buff *skb;
- int length = 0;
- struct net_local *np = (struct net_local *)dev->priv;
- struct etrax_dma_descr *mySaveRxDesc = myNextRxDesc;
- unsigned char *skb_data_ptr;
- #ifdef ETHDEBUG
- int i;
- #endif
- if (!led_active && jiffies > led_next_time) {
- /* light the network leds depending on the current speed. */
- e100_set_network_leds(NETWORK_ACTIVITY);
- /* Set the earliest time we may clear the LED */
- led_next_time = jiffies + NET_FLASH_TIME;
- led_active = 1;
- mod_timer(&clear_led_timer, jiffies + HZ/10);
- }
- /* If the packet is broken down in many small packages then merge
- * count how much space we will need to alloc with skb_alloc() for
- * it to fit.
- */
- while (!(myNextRxDesc->status & d_eop)) {
- length += myNextRxDesc->sw_len; /* use sw_len for the first descs */
- myNextRxDesc->status = 0;
- myNextRxDesc = phys_to_virt(myNextRxDesc->next);
- }
- length += myNextRxDesc->hw_len; /* use hw_len for the last descr */
- ((struct net_local *)dev->priv)->stats.rx_bytes += length;
- #ifdef ETHDEBUG
- printk("Got a packet of length %d:n", length);
- /* dump the first bytes in the packet */
- skb_data_ptr = (unsigned char *)phys_to_virt(mySaveRxDesc->buf);
- for (i = 0; i < 8; i++) {
- printk("%d: %.2x %.2x %.2x %.2x %.2x %.2x %.2x %.2xn", i * 8,
- skb_data_ptr[0],skb_data_ptr[1],skb_data_ptr[2],skb_data_ptr[3],
- skb_data_ptr[4],skb_data_ptr[5],skb_data_ptr[6],skb_data_ptr[7]);
- skb_data_ptr += 8;
- }
- #endif
- skb = dev_alloc_skb(length - ETHER_HEAD_LEN);
- if (!skb) {
- np->stats.rx_errors++;
- printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.n",
- dev->name);
- return;
- }
- skb_put(skb, length - ETHER_HEAD_LEN); /* allocate room for the packet body */
- skb_data_ptr = skb_push(skb, ETHER_HEAD_LEN); /* allocate room for the header */
- #ifdef ETHDEBUG
- printk("head = 0x%x, data = 0x%x, tail = 0x%x, end = 0x%xn",
- skb->head, skb->data, skb->tail, skb->end);
- printk("copying packet to 0x%x.n", skb_data_ptr);
- #endif
- /* this loop can be made using max two memcpy's if optimized */
- while (mySaveRxDesc != myNextRxDesc) {
- memcpy(skb_data_ptr, phys_to_virt(mySaveRxDesc->buf),
- mySaveRxDesc->sw_len);
- skb_data_ptr += mySaveRxDesc->sw_len;
- mySaveRxDesc = phys_to_virt(mySaveRxDesc->next);
- }
- memcpy(skb_data_ptr, phys_to_virt(mySaveRxDesc->buf),
- mySaveRxDesc->hw_len);
- skb->dev = dev;
- skb->protocol = eth_type_trans(skb, dev);
- /* Send the packet to the upper layers */
- netif_rx(skb);
- /* Prepare for next packet */
- myNextRxDesc->status = 0;
- myPrevRxDesc = myNextRxDesc;
- myNextRxDesc = phys_to_virt(myNextRxDesc->next);
- myPrevRxDesc->ctrl |= d_eol;
- myLastRxDesc->ctrl &= ~d_eol;
- myLastRxDesc = myPrevRxDesc;
- return;
- }
- /* The inverse routine to net_open(). */
- static int
- e100_close(struct net_device *dev)
- {
- struct net_local *np = (struct net_local *)dev->priv;
- printk("Closing %s.n", dev->name);
- netif_stop_queue(dev);
- *R_NETWORK_GEN_CONFIG =
- IO_STATE(R_NETWORK_GEN_CONFIG, phy, mii_clk) |
- IO_STATE(R_NETWORK_GEN_CONFIG, enable, off);
-
- *R_IRQ_MASK0_CLR =
- IO_STATE(R_IRQ_MASK0_CLR, overrun, clr) |
- IO_STATE(R_IRQ_MASK0_CLR, underrun, clr) |
- IO_STATE(R_IRQ_MASK0_CLR, excessive_col, clr);
-
- *R_IRQ_MASK2_CLR =
- IO_STATE(R_IRQ_MASK2_CLR, dma0_descr, clr) |
- IO_STATE(R_IRQ_MASK2_CLR, dma0_eop, clr) |
- IO_STATE(R_IRQ_MASK2_CLR, dma1_descr, clr) |
- IO_STATE(R_IRQ_MASK2_CLR, dma1_eop, clr);
- /* Stop the receiver and the transmitter */
- RESET_DMA(NETWORK_TX_DMA_NBR);
- RESET_DMA(NETWORK_RX_DMA_NBR);
- /* Flush the Tx and disable Rx here. */
- free_irq(NETWORK_DMA_RX_IRQ_NBR, (void *)dev);
- free_irq(NETWORK_DMA_TX_IRQ_NBR, (void *)dev);
- free_irq(NETWORK_STATUS_IRQ_NBR, (void *)dev);
- free_dma(NETWORK_TX_DMA_NBR);
- free_dma(NETWORK_RX_DMA_NBR);
- /* Update the statistics here. */
- update_rx_stats(&np->stats);
- update_tx_stats(&np->stats);
- return 0;
- }
- static int
- e100_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
- {
- /* Maybe default should return -EINVAL instead? */
- switch (cmd) {
- case SET_ETH_SPEED_10: /* 10 Mbps */
- e100_set_speed(10);
- break;
- case SET_ETH_SPEED_100: /* 100 Mbps */
- e100_set_speed(100);
- break;
- case SET_ETH_SPEED_AUTO: /* Auto negotiate speed */
- e100_set_speed(0);
- break;
- case SET_ETH_DUPLEX_HALF: /* Hhalf duplex. */
- e100_set_duplex(half);
- break;
- case SET_ETH_DUPLEX_FULL: /* Full duplex. */
- e100_set_duplex(full);
- break;
- case SET_ETH_DUPLEX_AUTO: /* Autonegotiate duplex*/
- e100_set_duplex(autoneg);
- break;
- default: /* Auto neg */
- e100_set_speed(0);
- e100_set_duplex(autoneg);
- break;
- }
- return 0;
- }
- static void
- update_rx_stats(struct net_device_stats *es)
- {
- unsigned long r = *R_REC_COUNTERS;
- /* update stats relevant to reception errors */
- es->rx_fifo_errors += IO_EXTRACT(R_REC_COUNTERS, congestion, r);
- es->rx_crc_errors += IO_EXTRACT(R_REC_COUNTERS, crc_error, r);
- es->rx_frame_errors += IO_EXTRACT(R_REC_COUNTERS, alignment_error, r);
- es->rx_length_errors += IO_EXTRACT(R_REC_COUNTERS, oversize, r);
- }
- static void
- update_tx_stats(struct net_device_stats *es)
- {
- unsigned long r = *R_TR_COUNTERS;
- /* update stats relevant to transmission errors */
- es->collisions +=
- IO_EXTRACT(R_TR_COUNTERS, single_col, r) +
- IO_EXTRACT(R_TR_COUNTERS, multiple_col, r);
- es->tx_errors += IO_EXTRACT(R_TR_COUNTERS, deferred, r);
- }
- /*
- * Get the current statistics.
- * This may be called with the card open or closed.
- */
- static struct net_device_stats *
- e100_get_stats(struct net_device *dev)
- {
- struct net_local *lp = (struct net_local *)dev->priv;
- update_rx_stats(&lp->stats);
- update_tx_stats(&lp->stats);
- return &lp->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)
- {
- int num_addr = dev->mc_count;
- unsigned long int lo_bits;
- unsigned long int hi_bits;
- if (dev->flags & IFF_PROMISC)
- {
- /* promiscuous mode */
- lo_bits = 0xfffffffful;
- hi_bits = 0xfffffffful;
- /* Enable individual receive */
- SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, receive);
- *R_NETWORK_REC_CONFIG = network_rec_config_shadow;
- } else if (dev->flags & IFF_ALLMULTI) {
- /* enable all multicasts */
- lo_bits = 0xfffffffful;
- hi_bits = 0xfffffffful;
- /* Disable individual receive */
- SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard);
- *R_NETWORK_REC_CONFIG = network_rec_config_shadow;
- } else if (num_addr == 0) {
- /* Normal, clear the mc list */
- lo_bits = 0x00000000ul;
- hi_bits = 0x00000000ul;
- /* Disable individual receive */
- SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard);
- *R_NETWORK_REC_CONFIG = network_rec_config_shadow;
- } else {
- /* MC mode, receive normal and MC packets */
- char hash_ix;
- struct dev_mc_list *dmi = dev->mc_list;
- int i;
- char *baddr;
- lo_bits = 0x00000000ul;
- hi_bits = 0x00000000ul;
- for (i=0; i<num_addr; i++) {
- /* Calculate the hash index for the GA registers */
-
- hash_ix = 0;
- baddr = dmi->dmi_addr;
- hash_ix ^= (*baddr) & 0x3f;
- hash_ix ^= ((*baddr) >> 6) & 0x03;
- ++baddr;
- hash_ix ^= ((*baddr) << 2) & 0x03c;
- hash_ix ^= ((*baddr) >> 4) & 0xf;
- ++baddr;
- hash_ix ^= ((*baddr) << 4) & 0x30;
- hash_ix ^= ((*baddr) >> 2) & 0x3f;
- ++baddr;
- hash_ix ^= (*baddr) & 0x3f;
- hash_ix ^= ((*baddr) >> 6) & 0x03;
- ++baddr;
- hash_ix ^= ((*baddr) << 2) & 0x03c;
- hash_ix ^= ((*baddr) >> 4) & 0xf;
- ++baddr;
- hash_ix ^= ((*baddr) << 4) & 0x30;
- hash_ix ^= ((*baddr) >> 2) & 0x3f;
-
- hash_ix &= 0x3f;
-
- if (hash_ix > 32) {
- hi_bits |= (1 << (hash_ix-32));
- }
- else {
- lo_bits |= (1 << hash_ix);
- }
- dmi = dmi->next;
- }
- /* Disable individual receive */
- SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard);
- *R_NETWORK_REC_CONFIG = network_rec_config_shadow;
- }
- *R_NETWORK_GA_0 = lo_bits;
- *R_NETWORK_GA_1 = hi_bits;
- }
- void
- e100_hardware_send_packet(char *buf, int length)
- {
- D(printk("e100 send pack, buf 0x%x len %dn", buf, length));
- if (!led_active && jiffies > led_next_time) {
- /* light the network leds depending on the current speed. */
- e100_set_network_leds(NETWORK_ACTIVITY);
- /* Set the earliest time we may clear the LED */
- led_next_time = jiffies + NET_FLASH_TIME;
- led_active = 1;
- mod_timer(&clear_led_timer, jiffies + HZ/10);
- }
- /* configure the tx dma descriptor */
- TxDesc.sw_len = length;
- TxDesc.ctrl = d_eop | d_eol | d_wait;
- TxDesc.buf = virt_to_phys(buf);
- /* setup the dma channel and start it */
- *R_DMA_CH0_FIRST = virt_to_phys(&TxDesc);
- *R_DMA_CH0_CMD = IO_STATE(R_DMA_CH0_CMD, cmd, start);
- }
- static void
- e100_clear_network_leds(unsigned long dummy)
- {
- if (led_active && jiffies > led_next_time) {
- e100_set_network_leds(NO_NETWORK_ACTIVITY);
- /* Set the earliest time we may set the LED */
- led_next_time = jiffies + NET_FLASH_PAUSE;
- led_active = 0;
- }
- }
- static void
- e100_set_network_leds(int active)
- {
- #if defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK)
- int light_leds = (active == NO_NETWORK_ACTIVITY);
- #elif defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY)
- int light_leds = (active == NETWORK_ACTIVITY);
- #else
- #error "Define either CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK or CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY"
- #endif
- if (!current_speed) {
- /* Make LED red, link is down */
- LED_NETWORK_SET(LED_RED);
- }
- else if (light_leds) {
- if (current_speed == 10) {
- LED_NETWORK_SET(LED_ORANGE);
- } else {
- LED_NETWORK_SET(LED_GREEN);
- }
- }
- else {
- LED_NETWORK_SET(LED_OFF);
- }
- }
- static struct net_device dev_etrax_ethernet; /* only got one */
- static int
- etrax_init_module(void)
- {
- struct net_device *d = &dev_etrax_ethernet;
- d->init = etrax_ethernet_init;
- if (register_netdev(d) == 0)
- return 0;
- else
- return -ENODEV;
- }
- module_init(etrax_init_module);