URL
https://opencores.org/ocsvn/or1k/or1k/trunk
Subversion Repositories or1k
[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [arch/] [cris/] [drivers/] [ethernet.c] - Rev 1765
Compare with Previous | Blame | View Log
/* $Id: ethernet.c,v 1.1.1.1 2004-04-15 01:22:16 phoenix Exp $ * * e100net.c: A network driver for the ETRAX 100LX network controller. * * Copyright (c) 1998-2002 Axis Communications AB. * * The outline of this driver comes from skeleton.c. * * $Log: not supported by cvs2svn $ * Revision 1.48 2003/12/03 13:44:39 starvik * Use hardware pad for short packets. This prevents information leakage * reported by Nessus. * * Revision 1.47 2003/11/25 15:12:38 anderstj * Make sure the LED always is inititated. * * Revision 1.46 2003/08/28 14:35:29 jonasw * Added support for TDK 2120C and fixed led when not connected * * Revision 1.45 2003/08/21 07:22:25 matsfg * Optional behaviour on networkled when no connection. * * Revision 1.44 2003/07/01 10:55:07 starvik * Never bring down link to make stupid POE equipment happy * * Revision 1.43 2003/04/24 08:26:50 starvik * New LED behaviour: LED off when no link * * Revision 1.42 2003/04/10 07:14:58 starvik * Merge of changes from todo list * * Revision 1.41 2003/04/09 08:31:14 pkj * Typo correction (taken from Linux 2.5). * * Revision 1.40 2003/04/01 14:12:06 starvik * Added loglevel for lots of printks * * Revision 1.39.2.3 2003/04/01 07:51:14 starvik * Default Ethernet Stations Address can be specified with command line option. * * Revision 1.39.2.2 2003/03/31 15:41:07 starvik * Only communicate with transciever when ETRAX is properly configured. * * Revision 1.39.2.1 2003/03/31 14:12:46 starvik * Transmit interrupt always enabled. This has two side effects: * 1. UDP (and possibly other protocols) works on quiet networks * 2. Slightly lower transmit performance * * Revision 1.39 2003/03/06 15:45:39 henriken * Off by one error in group address register setting. * * Revision 1.38 2003/02/27 17:23:07 starvik * Corrected Rev to Revision * * Revision 1.37 2003/02/27 10:52:59 magnusmn * More generic transceiver support. * * Revision 1.33.2.4 2003/02/24 16:51:26 magnusmn * TDK specific registers to check speed/duplex * * Revision 1.33.2.3 2003/02/24 09:16:31 magnusmn * ethernet.c * * Revision 1.33.2.2 2003/02/21 11:57:27 magnusmn * Merging differences between 1.36 and 1.33 into ethernet.c (needed ethtool ioctl) * * Revision 1.33.2.1 2002/12/04 07:54:49 starvik * First attempt to get more generic transceiver support * * Revision 1.33 2002/10/02 20:16:17 hp * SETF, SETS: Use underscored IO_x_ macros rather than incorrect token concatenation * * Revision 1.32 2002/09/16 06:05:58 starvik * Align memory returned by dev_alloc_skb * Moved handling of sent packets to interrupt to avoid reference counting problem * * Revision 1.31 2002/09/10 13:28:23 larsv * Return -EINVAL for unknown ioctls to avoid confusing tools that tests * for supported functionality by issuing special ioctls, i.e. wireless * extensions. * * Revision 1.30 2002/05/07 18:50:08 johana * Correct spelling in comments. * * Revision 1.29 2002/05/06 05:38:49 starvik * Performance improvements: * Large packets are not copied (breakpoint set to 256 bytes) * The cache bug workaround is delayed until half of the receive list * has been used * Added transmit list * Transmit interrupts are only enabled when transmit queue is full * * Revision 1.28.2.1 2002/04/30 08:15:51 starvik * Performance improvements: * Large packets are not copied (breakpoint set to 256 bytes) * The cache bug workaround is delayed until half of the receive list * has been used. * Added transmit list * Transmit interrupts are only enabled when transmit queue is full * * Revision 1.28 2002/04/22 11:47:21 johana * Fix according to 2.4.19-pre7. time_after/time_before and * missing end of comment. * The patch has a typo for ethernet.c in e100_clear_network_leds(), * that is fixed here. * * Revision 1.27 2002/04/12 11:55:11 bjornw * Added TODO * * Revision 1.26 2002/03/15 17:11:02 bjornw * Use prepare_rx_descriptor after the CPU has touched the receiving descs * * Revision 1.25 2002/03/08 13:07:53 bjornw * Unnecessary spinlock removed * * Revision 1.24 2002/02/20 12:57:43 fredriks * Replaced MIN() with min(). * * Revision 1.23 2002/02/20 10:58:14 fredriks * Strip the Ethernet checksum (4 bytes) before forwarding a frame to upper layers. * * 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/if.h> #include <linux/mii.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> #include <linux/ethtool.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> #include <asm/cache.h> #include <asm/uaccess.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; }; typedef struct etrax_eth_descr { etrax_dma_descr descr; struct sk_buff* skb; } etrax_eth_descr; /* Some transceivers requires special handling */ struct transceiver_ops { unsigned int oui; void (*check_speed)(void); void (*check_duplex)(void); }; struct transceiver_ops* transceiver; /* Duplex settings */ enum duplex { half, full, autoneg }; /* Dma descriptors etc. */ #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_PHY_ID_HIGH_REG 0x2 #define MDIO_PHY_ID_LOW_REG 0x3 #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_STATUS_100_FD 0x4000 #define MDIO_STATUS_100_HD 0x2000 #define MDIO_STATUS_10_FD 0x1000 #define MDIO_STATUS_10_HD 0x0800 #define MDIO_STATUS_SPEED_DUPLEX_MASK 0x7800 #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_BC_FULL_DUPLEX_IND 0x1 #define MDIO_BC_SPEED 0x2 /* TDK specific */ #define MDIO_TDK_DIAGNOSTIC_REG 18 #define MDIO_TDK_DIAGNOSTIC_RATE 0x400 #define MDIO_TDK_DIAGNOSTIC_DPLX 0x800 /* 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 NBR_OF_RX_DESC 64 #define NBR_OF_TX_DESC 256 /* Large packets are sent directly to upper layers while small packets are */ /* copied (to reduce memory waste). The following constant decides the breakpoint */ #define RX_COPYBREAK 256 /* Due to a chip bug we need to flush the cache when descriptors are returned */ /* to the DMA. To decrease performance impact we return descriptors in chunks. */ /* The following constant determines the number of descriptors to return. */ #define RX_QUEUE_THRESHOLD NBR_OF_RX_DESC/2 #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_eth_descr *myNextRxDesc; /* Points to the next descriptor to to be processed */ static etrax_eth_descr *myLastRxDesc; /* The last processed descriptor */ static etrax_eth_descr *myPrevRxDesc; /* The descriptor right before myNextRxDesc */ static etrax_eth_descr RxDescList[NBR_OF_RX_DESC] __attribute__ ((aligned(32))); static etrax_eth_descr* myFirstTxDesc; /* First packet not yet sent */ static etrax_eth_descr* myLastTxDesc; /* End of send queue */ static etrax_eth_descr* myNextTxDesc; /* Next descriptor to use */ static etrax_eth_descr TxDescList[NBR_OF_TX_DESC] __attribute__ ((aligned(32))); static unsigned int network_rec_config_shadow = 0; static unsigned int mdio_phy_addr; /* Transciever address */ /* Network speed indication. */ static struct timer_list speed_timer; static struct timer_list clear_led_timer; static int current_speed; /* Speed read from transceiver */ static int current_speed_selection; /* Speed selected by user */ static int led_next_time; static int led_active; static int rx_queue_len; /* 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 e100rxtx_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 int e100_ethtool_ioctl(struct net_device* dev, struct ifreq *ifr); 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 int e100_probe_transceiver(void); 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_set_mdio_reg(unsigned char reg, unsigned short data); 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_transceiver(void); static void e100_clear_network_leds(unsigned long dummy); static void e100_set_network_leds(int active); static void broadcom_check_speed(void); static void broadcom_check_duplex(void); static void tdk_check_speed(void); static void tdk_check_duplex(void); static void generic_check_speed(void); static void generic_check_duplex(void); struct transceiver_ops transceivers[] = { {0x1018, broadcom_check_speed, broadcom_check_duplex}, /* Broadcom */ {0xC039, tdk_check_speed, tdk_check_duplex}, /* TDK 2120 */ {0x039C, tdk_check_speed, tdk_check_duplex}, /* TDK 2120C */ {0x0000, generic_check_speed, generic_check_duplex} /* Generic, must be last */ }; #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; printk(KERN_INFO "ETRAX 100LX 10/100MBit ethernet v2.0 (c) 2000-2001 Axis Communications AB\n"); dev->base_addr = (unsigned int)R_NETWORK_SA_0; /* just to have something to show */ printk(KERN_INFO "%s initialized\n", 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 failed\n"); } /* 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; i++) { /* Allocate two extra cachelines to make sure that buffer used by DMA * does not share cacheline with any other data (to avoid cache bug) */ RxDescList[i].skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES); RxDescList[i].descr.ctrl = 0; RxDescList[i].descr.sw_len = MAX_MEDIA_DATA_SIZE; RxDescList[i].descr.next = virt_to_phys(&RxDescList[i + 1]); RxDescList[i].descr.buf = L1_CACHE_ALIGN(virt_to_phys(RxDescList[i].skb->data)); RxDescList[i].descr.status = 0; RxDescList[i].descr.hw_len = 0; prepare_rx_descriptor(&RxDescList[i].descr); } RxDescList[NBR_OF_RX_DESC - 1].descr.ctrl = d_eol; RxDescList[NBR_OF_RX_DESC - 1].descr.next = virt_to_phys(&RxDescList[0]); rx_queue_len = 0; /* Initialize transmit descriptors */ for (i = 0; i < NBR_OF_TX_DESC; i++) { TxDescList[i].descr.ctrl = 0; TxDescList[i].descr.sw_len = 0; TxDescList[i].descr.next = virt_to_phys(&TxDescList[i + 1].descr); TxDescList[i].descr.buf = 0; TxDescList[i].descr.status = 0; TxDescList[i].descr.hw_len = 0; TxDescList[i].skb = 0; } TxDescList[NBR_OF_TX_DESC - 1].descr.ctrl = d_eol; TxDescList[NBR_OF_TX_DESC - 1].descr.next = virt_to_phys(&TxDescList[0].descr); /* Initialise initial pointers */ myNextRxDesc = &RxDescList[0]; myLastRxDesc = &RxDescList[NBR_OF_RX_DESC - 1]; myPrevRxDesc = &RxDescList[NBR_OF_RX_DESC - 1]; myFirstTxDesc = &TxDescList[0]; myNextTxDesc = &TxDescList[0]; myLastTxDesc = &TxDescList[NBR_OF_TX_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; 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; /* Initialize group address registers to make sure that no */ /* unwanted addresses are matched */ *R_NETWORK_GA_0 = 0x00000000; *R_NETWORK_GA_1 = 0x00000000; 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(KERN_INFO "%s: changed MAC to ", dev->name); for (i = 0; i < 5; i++) printk("%02X:", dev->dev_addr[i]); printk("%02X\n", 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; /* 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, e100rxtx_interrupt, 0, cardname, (void *)dev)) { goto grace_exit0; } /* allocate the irq corresponding to the transmitting DMA */ if (request_irq(NETWORK_DMA_TX_IRQ_NBR, e100rxtx_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); /* 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); /* Set up transmit DMA channel so it can be restarted later */ *R_DMA_CH0_FIRST = 0; *R_DMA_CH0_DESCR = virt_to_phys(myLastTxDesc); restore_flags(flags); /* Probe for transceiver */ if (e100_probe_transceiver()) goto grace_exit4; /* Start duplex/speed timers */ add_timer(&speed_timer); add_timer(&duplex_timer); /* 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 generic_check_speed(void) { unsigned long data; data = e100_get_mdio_reg(MDIO_ADVERTISMENT_REG); if ((data & MDIO_ADVERT_100_FD) || (data & MDIO_ADVERT_100_HD)) current_speed = 100; else current_speed = 10; } static void tdk_check_speed(void) { unsigned long data; data = e100_get_mdio_reg(MDIO_TDK_DIAGNOSTIC_REG); current_speed = (data & MDIO_TDK_DIAGNOSTIC_RATE ? 100 : 10); } static void broadcom_check_speed(void) { unsigned long data; data = e100_get_mdio_reg(MDIO_AUX_CTRL_STATUS_REG); current_speed = (data & MDIO_BC_SPEED ? 100 : 10); } static void e100_check_speed(unsigned long dummy) { static int led_initiated = 0; 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 { transceiver->check_speed(); } if ((old_speed != current_speed) || !led_initiated) { led_initiated = 1; 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 data = e100_get_mdio_reg(MDIO_ADVERTISMENT_REG); /* 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; } e100_set_mdio_reg(MDIO_ADVERTISMENT_REG, data); /* Renegotiate with link partner */ data = e100_get_mdio_reg(MDIO_BASE_CONTROL_REG); data |= MDIO_BC_NEGOTIATE; e100_set_mdio_reg(MDIO_BASE_CONTROL_REG, data); } static void e100_set_speed(unsigned long speed) { if (speed != current_speed_selection) { current_speed_selection = speed; e100_negotiate(); } } static void e100_check_duplex(unsigned long dummy) { int old_duplex = full_duplex; transceiver->check_duplex(); if (old_duplex != full_duplex) { /* Duplex changed */ 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 generic_check_duplex(void) { unsigned long data; data = e100_get_mdio_reg(MDIO_ADVERTISMENT_REG); if ((data & MDIO_ADVERT_100_FD) || (data & MDIO_ADVERT_10_FD)) full_duplex = 1; else full_duplex = 0; } static void tdk_check_duplex(void) { unsigned long data; data = e100_get_mdio_reg(MDIO_TDK_DIAGNOSTIC_REG); full_duplex = (data & MDIO_TDK_DIAGNOSTIC_DPLX) ? 1 : 0; } static void broadcom_check_duplex(void) { unsigned long data; data = e100_get_mdio_reg(MDIO_AUX_CTRL_STATUS_REG); full_duplex = (data & MDIO_BC_FULL_DUPLEX_IND) ? 1 : 0; } static void e100_set_duplex(enum duplex new_duplex) { if (new_duplex != current_duplex) { current_duplex = new_duplex; e100_negotiate(); } } static int e100_probe_transceiver(void) { unsigned int phyid_high; unsigned int phyid_low; unsigned int oui; struct transceiver_ops* ops = NULL; /* Probe MDIO physical address */ for (mdio_phy_addr = 0; mdio_phy_addr <= 31; mdio_phy_addr++) { if (e100_get_mdio_reg(MDIO_BASE_STATUS_REG) != 0xffff) break; } if (mdio_phy_addr == 32) return -ENODEV; /* Get manufacturer */ phyid_high = e100_get_mdio_reg(MDIO_PHY_ID_HIGH_REG); phyid_low = e100_get_mdio_reg(MDIO_PHY_ID_LOW_REG); oui = (phyid_high << 6) | (phyid_low >> 10); for (ops = &transceivers[0]; ops->oui; ops++) { if (ops->oui == oui) break; } transceiver = ops; return 0; } 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_phy_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_set_mdio_reg(unsigned char reg, unsigned short data) { int bitCounter; unsigned short cmd; cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (mdio_phy_addr << 7) | (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_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_transceiver(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_phy_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 transceiver. */ e100_reset_transceiver(); /* and get rid of the packets that never got an interrupt */ while (myFirstTxDesc != myNextTxDesc) { dev_kfree_skb(myFirstTxDesc->skb); myFirstTxDesc->skb = 0; myFirstTxDesc = phys_to_virt(myFirstTxDesc->descr.next); } /* Set up transmit DMA channel so it can be restarted later */ *R_DMA_CH0_FIRST = 0; *R_DMA_CH0_DESCR = virt_to_phys(myLastTxDesc); /* 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; unsigned char *buf = skb->data; #ifdef ETHDEBUG printk("send packet len %d\n", length); #endif spin_lock_irq(&np->lock); /* protect from tx_interrupt and ourself */ myNextTxDesc->skb = skb; dev->trans_start = jiffies; e100_hardware_send_packet(buf, skb->len); myNextTxDesc = phys_to_virt(myNextTxDesc->descr.next); /* Stop queue if full */ if (myNextTxDesc == myFirstTxDesc) { netif_stop_queue(dev); } spin_unlock_irq(&np->lock); return 0; } /* * The typical workload of the driver: * Handle the network interface interrupts. */ static void e100rxtx_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_MASK2_RD; /* Disable RX/TX IRQs to avoid reentrancy */ *R_IRQ_MASK2_CLR = IO_STATE(R_IRQ_MASK2_CLR, dma0_eop, clr) | IO_STATE(R_IRQ_MASK2_CLR, dma1_eop, clr); /* Handle received packets */ 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 */ } } /* Report any packets that have been sent */ while (myFirstTxDesc != phys_to_virt(*R_DMA_CH0_FIRST) && myFirstTxDesc != myNextTxDesc) { np->stats.tx_bytes += myFirstTxDesc->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(myFirstTxDesc->skb); myFirstTxDesc->skb = 0; myFirstTxDesc = phys_to_virt(myFirstTxDesc->descr.next); } if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma0_eop, active)) { /* acknowledge the eop interrupt and wake up queue */ *R_DMA_CH0_CLR_INTR = IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop, do); netif_wake_queue(dev); } /* Enable RX/TX IRQs again */ *R_IRQ_MASK2_SET = IO_STATE(R_IRQ_MASK2_SET, dma0_eop, set) | IO_STATE(R_IRQ_MASK2_SET, dma1_eop, set); } 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; unsigned char *skb_data_ptr; #ifdef ETHDEBUG int i; #endif if (!led_active && time_after(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); } length = myNextRxDesc->descr.hw_len - 4; ((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(myNextRxDesc->descr.buf); for (i = 0; i < 8; i++) { printk("%d: %.2x %.2x %.2x %.2x %.2x %.2x %.2x %.2x\n", 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 if (length < RX_COPYBREAK) { /* Small packet, copy data */ 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%x\n", skb->head, skb->data, skb->tail, skb->end); printk("copying packet to 0x%x.\n", skb_data_ptr); #endif memcpy(skb_data_ptr, phys_to_virt(myNextRxDesc->descr.buf), length); } else { /* Large packet, send directly to upper layers and allocate new * memory (aligned to cache line boundary to avoid bug). * Before sending the skb to upper layers we must make sure that * skb->data points to the aligned start of the packet. */ int align; struct sk_buff *new_skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES); if (!new_skb) { np->stats.rx_errors++; printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); return; } skb = myNextRxDesc->skb; align = (int)phys_to_virt(myNextRxDesc->descr.buf) - (int)skb->data; skb_put(skb, length + align); skb_pull(skb, align); /* Remove alignment bytes */ myNextRxDesc->skb = new_skb; myNextRxDesc->descr.buf = L1_CACHE_ALIGN(virt_to_phys(myNextRxDesc->skb->data)); } 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->descr.status = 0; myPrevRxDesc = myNextRxDesc; myNextRxDesc = phys_to_virt(myNextRxDesc->descr.next); rx_queue_len++; /* Check if descriptors should be returned */ if (rx_queue_len == RX_QUEUE_THRESHOLD) { flush_etrax_cache(); myPrevRxDesc->descr.ctrl |= d_eol; myLastRxDesc->descr.ctrl &= ~d_eol; myLastRxDesc = myPrevRxDesc; rx_queue_len = 0; } } /* The inverse routine to net_open(). */ static int e100_close(struct net_device *dev) { struct net_local *np = (struct net_local *)dev->priv; printk(KERN_INFO "Closing %s.\n", dev->name); netif_stop_queue(dev); *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); /* Stop speed/duplex timers */ del_timer(&speed_timer); del_timer(&duplex_timer); return 0; } static int e100_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) { struct mii_ioctl_data *data = (struct mii_ioctl_data *)&ifr->ifr_data; switch (cmd) { case SIOCETHTOOL: return e100_ethtool_ioctl(dev,ifr); case SIOCGMIIPHY: /* Get PHY address */ data->phy_id = mdio_phy_addr; break; case SIOCGMIIREG: /* Read MII register */ data->val_out = e100_get_mdio_reg(data->reg_num); break; case SIOCSMIIREG: /* Write MII register */ e100_set_mdio_reg(data->reg_num, data->val_in); break; /* The ioctls below should be considered obsolete but are */ /* still present for compatability with old scripts/apps */ 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: /* Half 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: return -EINVAL; } return 0; } static int e100_ethtool_ioctl(struct net_device *dev, struct ifreq *ifr) { struct ethtool_cmd ecmd; if (copy_from_user(&ecmd, ifr->ifr_data, sizeof (ecmd))) return -EFAULT; switch (ecmd.cmd) { case ETHTOOL_GSET: { memset((void *) &ecmd, 0, sizeof (ecmd)); ecmd.supported = SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII | SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full; ecmd.port = PORT_TP; ecmd.transceiver = XCVR_EXTERNAL; ecmd.phy_address = mdio_phy_addr; ecmd.speed = current_speed; ecmd.duplex = full_duplex ? DUPLEX_FULL : DUPLEX_HALF; ecmd.advertising = ADVERTISED_TP; if (current_duplex == autoneg && current_speed_selection == 0) ecmd.advertising |= ADVERTISED_Autoneg; else { ecmd.advertising |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full; if (current_speed_selection == 10) ecmd.advertising &= ~(ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full); else if (current_speed_selection == 100) ecmd.advertising &= ~(ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full); if (current_duplex == half) ecmd.advertising &= ~(ADVERTISED_10baseT_Full | ADVERTISED_100baseT_Full); else if (current_duplex == full) ecmd.advertising &= ~(ADVERTISED_10baseT_Half | ADVERTISED_100baseT_Half); } ecmd.autoneg = AUTONEG_ENABLE; if (copy_to_user(ifr->ifr_data, &ecmd, sizeof (ecmd))) return -EFAULT; } break; case ETHTOOL_SSET: { if (!capable(CAP_NET_ADMIN)) { return -EPERM; } if (ecmd.autoneg == AUTONEG_ENABLE) { e100_set_duplex(autoneg); e100_set_speed(0); } else { e100_set_duplex(ecmd.duplex == DUPLEX_HALF ? half : full); e100_set_speed(ecmd.speed == SPEED_10 ? 10: 100); } } break; case ETHTOOL_GDRVINFO: { struct ethtool_drvinfo info; memset((void *) &info, 0, sizeof (info)); strncpy(info.driver, "ETRAX 100LX", sizeof(info.driver) - 1); strncpy(info.version, "$Revision: 1.1.1.1 $", sizeof(info.version) - 1); strncpy(info.fw_version, "N/A", sizeof(info.fw_version) - 1); strncpy(info.bus_info, "N/A", sizeof(info.bus_info) - 1); info.regdump_len = 0; info.eedump_len = 0; info.testinfo_len = 0; if (copy_to_user(ifr->ifr_data, &info, sizeof (info))) return -EFAULT; } break; case ETHTOOL_NWAY_RST: if (current_duplex == autoneg && current_speed_selection == 0) e100_negotiate(); break; default: return -EOPNOTSUPP; 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 %d\n", buf, length)); if (!led_active && time_after(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 */ myNextTxDesc->descr.sw_len = length; myNextTxDesc->descr.ctrl = d_eop | d_eol | d_wait; myNextTxDesc->descr.buf = virt_to_phys(buf); /* Move end of list */ myLastTxDesc->descr.ctrl &= ~d_eol; myLastTxDesc = myNextTxDesc; /* Restart DMA channel */ *R_DMA_CH0_CMD = IO_STATE(R_DMA_CH0_CMD, cmd, restart); } static void e100_clear_network_leds(unsigned long dummy) { if (led_active && time_after(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 */ #if defined(CONFIG_ETRAX_NETWORK_RED_ON_NO_CONNECTION) LED_NETWORK_SET(LED_RED); #else LED_NETWORK_SET(LED_OFF); #endif } 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; } static int __init e100_boot_setup(char* str) { struct sockaddr sa = {0}; int i; /* Parse the colon separated Ethernet station address */ for (i = 0; i < ETH_ALEN; i++) { unsigned int tmp; if (sscanf(str + 3*i, "%2x", &tmp) != 1) { printk(KERN_WARNING "Malformed station address"); return 0; } sa.sa_data[i] = (char)tmp; } default_mac = sa; return 1; } __setup("etrax100_eth=", e100_boot_setup); module_init(etrax_init_module);