diff options
Diffstat (limited to 'drivers/net/cris/eth_v10.c')
| -rw-r--r-- | drivers/net/cris/eth_v10.c | 1742 |
1 files changed, 0 insertions, 1742 deletions
diff --git a/drivers/net/cris/eth_v10.c b/drivers/net/cris/eth_v10.c deleted file mode 100644 index 8b1a859f5140..000000000000 --- a/drivers/net/cris/eth_v10.c +++ /dev/null @@ -1,1742 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * 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. - * - */ - -#include <linux/kernel.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/string.h> -#include <linux/spinlock.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/bitops.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 <arch/svinto.h>/* DMA and register descriptions */ -#include <asm/io.h> /* CRIS_LED_* I/O functions */ -#include <asm/irq.h> -#include <asm/dma.h> -#include <asm/ethernet.h> -#include <asm/cache.h> -#include <arch/io_interface_mux.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 mii_if_info mii_if; - - /* 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; - - spinlock_t led_lock; /* Protect LED state */ - spinlock_t transceiver_lock; /* Protect transceiver state. */ -}; - -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)(struct net_device* dev); - void (*check_duplex)(struct net_device* dev); -}; - -/* Duplex settings */ -enum duplex -{ - half, - full, - autoneg -}; - -/* Dma descriptors etc. */ - -#define MAX_MEDIA_DATA_SIZE 1522 - -#define MIN_PACKET_LEN 46 -#define ETHER_HEAD_LEN 14 - -/* -** MDIO constants. -*/ -#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 - -/*Intel LXT972A specific*/ -#define MDIO_INT_STATUS_REG_2 0x0011 -#define MDIO_INT_FULL_DUPLEX_IND (1 << 9) -#define MDIO_INT_SPEED (1 << 14) - -/* 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 32 -#define NBR_OF_TX_DESC 16 - -/* 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 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 network_tr_ctrl_shadow = 0; - -/* Timers */ -static void e100_check_speed(struct timer_list *unused); -static void e100_clear_network_leds(struct timer_list *unused); -static void e100_check_duplex(struct timer_list *unused); -static DEFINE_TIMER(speed_timer, e100_check_speed); -static DEFINE_TIMER(clear_led_timer, e100_clear_network_leds); -static DEFINE_TIMER(duplex_timer, e100_check_duplex); -static struct net_device *timer_dev; - -/* Network speed indication. */ -static int current_speed; /* Speed read from transceiver */ -static int current_speed_selection; /* Speed selected by user */ -static unsigned long led_next_time; -static int led_active; -static int rx_queue_len; - -/* Duplex */ -static int full_duplex; -static enum duplex current_duplex; - -/* Index to functions, as function prototypes. */ - -static int etrax_ethernet_init(void); - -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 irqreturn_t e100rxtx_interrupt(int irq, void *dev_id); -static irqreturn_t e100nw_interrupt(int irq, void *dev_id); -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_set_config(struct net_device* dev, struct ifmap* map); -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(struct net_local* np, 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(struct net_device* dev); - -static void e100_set_speed(struct net_device* dev, unsigned long speed); -static void e100_set_duplex(struct net_device* dev, enum duplex); -static void e100_negotiate(struct net_device* dev); - -static int e100_get_mdio_reg(struct net_device *dev, int phy_id, int location); -static void e100_set_mdio_reg(struct net_device *dev, int phy_id, int location, int value); - -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(struct net_device* net); - -static void e100_set_network_leds(int active); - -static const struct ethtool_ops e100_ethtool_ops; -#if defined(CONFIG_ETRAX_NO_PHY) -static void dummy_check_speed(struct net_device* dev); -static void dummy_check_duplex(struct net_device* dev); -#else -static void broadcom_check_speed(struct net_device* dev); -static void broadcom_check_duplex(struct net_device* dev); -static void tdk_check_speed(struct net_device* dev); -static void tdk_check_duplex(struct net_device* dev); -static void intel_check_speed(struct net_device* dev); -static void intel_check_duplex(struct net_device* dev); -static void generic_check_speed(struct net_device* dev); -static void generic_check_duplex(struct net_device* dev); -#endif -#ifdef CONFIG_NET_POLL_CONTROLLER -static void e100_netpoll(struct net_device* dev); -#endif - -static int autoneg_normal = 1; - -struct transceiver_ops transceivers[] = -{ -#if defined(CONFIG_ETRAX_NO_PHY) - {0x0000, dummy_check_speed, dummy_check_duplex} /* Dummy */ -#else - {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 */ - {0x04de, intel_check_speed, intel_check_duplex}, /* Intel LXT972A*/ - {0x0000, generic_check_speed, generic_check_duplex} /* Generic, must be last */ -#endif -}; - -struct transceiver_ops* transceiver = &transceivers[0]; - -static const struct net_device_ops e100_netdev_ops = { - .ndo_open = e100_open, - .ndo_stop = e100_close, - .ndo_start_xmit = e100_send_packet, - .ndo_tx_timeout = e100_tx_timeout, - .ndo_get_stats = e100_get_stats, - .ndo_set_rx_mode = set_multicast_list, - .ndo_do_ioctl = e100_ioctl, - .ndo_set_mac_address = e100_set_mac_address, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_config = e100_set_config, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = e100_netpoll, -#endif -}; - -#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(void) -{ - struct net_device *dev; - struct net_local* np; - int i, err; - - printk(KERN_INFO - "ETRAX 100LX 10/100MBit ethernet v2.0 (c) 1998-2007 Axis Communications AB\n"); - - if (cris_request_io_interface(if_eth, cardname)) { - printk(KERN_CRIT "etrax_ethernet_init failed to get IO interface\n"); - return -EBUSY; - } - - dev = alloc_etherdev(sizeof(struct net_local)); - if (!dev) - return -ENOMEM; - - np = netdev_priv(dev); - - /* we do our own locking */ - dev->features |= NETIF_F_LLTX; - - dev->base_addr = (unsigned int)R_NETWORK_SA_0; /* just to have something to show */ - - /* 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->ethtool_ops = &e100_ethtool_ops; - dev->netdev_ops = &e100_netdev_ops; - - spin_lock_init(&np->lock); - spin_lock_init(&np->led_lock); - spin_lock_init(&np->transceiver_lock); - - /* 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); - if (!RxDescList[i].skb) - return -ENOMEM; - 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]; - myFirstTxDesc = &TxDescList[0]; - myNextTxDesc = &TxDescList[0]; - myLastTxDesc = &TxDescList[NBR_OF_TX_DESC - 1]; - - /* Register device */ - err = register_netdev(dev); - if (err) { - free_netdev(dev); - return err; - } - - /* set the default MAC address */ - - e100_set_mac_address(dev, &default_mac); - - /* Initialize speed indicator stuff. */ - - current_speed = 10; - current_speed_selection = 0; /* Auto */ - speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL; - - full_duplex = 0; - current_duplex = autoneg; - duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL; - - timer_dev = dev; - - /* Initialize mii interface */ - np->mii_if.phy_id_mask = 0x1f; - np->mii_if.reg_num_mask = 0x1f; - np->mii_if.dev = dev; - np->mii_if.mdio_read = e100_get_mdio_reg; - np->mii_if.mdio_write = e100_set_mdio_reg; - - /* Initialize group address registers to make sure that no */ - /* unwanted addresses are matched */ - *R_NETWORK_GA_0 = 0x00000000; - *R_NETWORK_GA_1 = 0x00000000; - - /* Initialize next time the led can flash */ - led_next_time = jiffies; - return 0; -} -device_initcall(etrax_ethernet_init) - -/* 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 net_local *np = netdev_priv(dev); - struct sockaddr *addr = p; - - spin_lock(&np->lock); /* preemption protection */ - - /* 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 %pM\n", dev->name, dev->dev_addr); - - spin_unlock(&np->lock); - - 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 (cris_request_dma(NETWORK_TX_DMA_NBR, - cardname, - DMA_VERBOSE_ON_ERROR, - dma_eth)) { - goto grace_exit3; - } - - if (cris_request_dma(NETWORK_RX_DMA_NBR, - cardname, - DMA_VERBOSE_ON_ERROR, - dma_eth)) { - 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, max_size, size1522); - 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); - - SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr); - SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, delay, none); - SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, cancel, dont); - SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, cd, enable); - SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, retry, enable); - SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, pad, enable); - SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, crc, enable); - *R_NETWORK_TR_CTRL = network_tr_ctrl_shadow; - - local_irq_save(flags); - - /* 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); - netif_start_queue(dev); - - local_irq_restore(flags); - - /* Probe for transceiver */ - if (e100_probe_transceiver(dev)) - goto grace_exit5; - - /* 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_carrier_on(dev); - - return 0; - -grace_exit5: - cris_free_dma(NETWORK_RX_DMA_NBR, cardname); -grace_exit4: - cris_free_dma(NETWORK_TX_DMA_NBR, cardname); -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; -} - -#if defined(CONFIG_ETRAX_NO_PHY) -static void -dummy_check_speed(struct net_device* dev) -{ - current_speed = 100; -} -#else -static void -generic_check_speed(struct net_device* dev) -{ - unsigned long data; - struct net_local *np = netdev_priv(dev); - - data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_ADVERTISE); - if ((data & ADVERTISE_100FULL) || - (data & ADVERTISE_100HALF)) - current_speed = 100; - else - current_speed = 10; -} - -static void -tdk_check_speed(struct net_device* dev) -{ - unsigned long data; - struct net_local *np = netdev_priv(dev); - - data = e100_get_mdio_reg(dev, np->mii_if.phy_id, - MDIO_TDK_DIAGNOSTIC_REG); - current_speed = (data & MDIO_TDK_DIAGNOSTIC_RATE ? 100 : 10); -} - -static void -broadcom_check_speed(struct net_device* dev) -{ - unsigned long data; - struct net_local *np = netdev_priv(dev); - - data = e100_get_mdio_reg(dev, np->mii_if.phy_id, - MDIO_AUX_CTRL_STATUS_REG); - current_speed = (data & MDIO_BC_SPEED ? 100 : 10); -} - -static void -intel_check_speed(struct net_device* dev) -{ - unsigned long data; - struct net_local *np = netdev_priv(dev); - - data = e100_get_mdio_reg(dev, np->mii_if.phy_id, - MDIO_INT_STATUS_REG_2); - current_speed = (data & MDIO_INT_SPEED ? 100 : 10); -} -#endif -static void -e100_check_speed(struct timer_list *unused) -{ - struct net_device* dev = timer_dev; - struct net_local *np = netdev_priv(dev); - static int led_initiated = 0; - unsigned long data; - int old_speed = current_speed; - - spin_lock(&np->transceiver_lock); - - data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_BMSR); - if (!(data & BMSR_LSTATUS)) { - current_speed = 0; - } else { - transceiver->check_speed(dev); - } - - spin_lock(&np->led_lock); - if ((old_speed != current_speed) || !led_initiated) { - led_initiated = 1; - e100_set_network_leds(NO_NETWORK_ACTIVITY); - if (current_speed) - netif_carrier_on(dev); - else - netif_carrier_off(dev); - } - spin_unlock(&np->led_lock); - - /* Reinitialize the timer. */ - speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL; - add_timer(&speed_timer); - - spin_unlock(&np->transceiver_lock); -} - -static void -e100_negotiate(struct net_device* dev) -{ - struct net_local *np = netdev_priv(dev); - unsigned short data = e100_get_mdio_reg(dev, np->mii_if.phy_id, - MII_ADVERTISE); - - /* Discard old speed and duplex settings */ - data &= ~(ADVERTISE_100HALF | ADVERTISE_100FULL | - ADVERTISE_10HALF | ADVERTISE_10FULL); - - switch (current_speed_selection) { - case 10: - if (current_duplex == full) - data |= ADVERTISE_10FULL; - else if (current_duplex == half) - data |= ADVERTISE_10HALF; - else - data |= ADVERTISE_10HALF | ADVERTISE_10FULL; - break; - - case 100: - if (current_duplex == full) - data |= ADVERTISE_100FULL; - else if (current_duplex == half) - data |= ADVERTISE_100HALF; - else - data |= ADVERTISE_100HALF | ADVERTISE_100FULL; - break; - - case 0: /* Auto */ - if (current_duplex == full) - data |= ADVERTISE_100FULL | ADVERTISE_10FULL; - else if (current_duplex == half) - data |= ADVERTISE_100HALF | ADVERTISE_10HALF; - else - data |= ADVERTISE_10HALF | ADVERTISE_10FULL | - ADVERTISE_100HALF | ADVERTISE_100FULL; - break; - - default: /* assume autoneg speed and duplex */ - data |= ADVERTISE_10HALF | ADVERTISE_10FULL | - ADVERTISE_100HALF | ADVERTISE_100FULL; - break; - } - - e100_set_mdio_reg(dev, np->mii_if.phy_id, MII_ADVERTISE, data); - - data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_BMCR); - if (autoneg_normal) { - /* Renegotiate with link partner */ - data |= BMCR_ANENABLE | BMCR_ANRESTART; - } else { - /* Don't negotiate speed or duplex */ - data &= ~(BMCR_ANENABLE | BMCR_ANRESTART); - - /* Set speed and duplex static */ - if (current_speed_selection == 10) - data &= ~BMCR_SPEED100; - else - data |= BMCR_SPEED100; - - if (current_duplex != full) - data &= ~BMCR_FULLDPLX; - else - data |= BMCR_FULLDPLX; - } - e100_set_mdio_reg(dev, np->mii_if.phy_id, MII_BMCR, data); -} - -static void -e100_set_speed(struct net_device* dev, unsigned long speed) -{ - struct net_local *np = netdev_priv(dev); - - spin_lock(&np->transceiver_lock); - if (speed != current_speed_selection) { - current_speed_selection = speed; - e100_negotiate(dev); - } - spin_unlock(&np->transceiver_lock); -} - -static void -e100_check_duplex(struct timer_list *unused) -{ - struct net_device *dev = timer_dev; - struct net_local *np = netdev_priv(dev); - int old_duplex; - - spin_lock(&np->transceiver_lock); - old_duplex = full_duplex; - transceiver->check_duplex(dev); - 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); - np->mii_if.full_duplex = full_duplex; - spin_unlock(&np->transceiver_lock); -} -#if defined(CONFIG_ETRAX_NO_PHY) -static void -dummy_check_duplex(struct net_device* dev) -{ - full_duplex = 1; -} -#else -static void -generic_check_duplex(struct net_device* dev) -{ - unsigned long data; - struct net_local *np = netdev_priv(dev); - - data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_ADVERTISE); - if ((data & ADVERTISE_10FULL) || - (data & ADVERTISE_100FULL)) - full_duplex = 1; - else - full_duplex = 0; -} - -static void -tdk_check_duplex(struct net_device* dev) -{ - unsigned long data; - struct net_local *np = netdev_priv(dev); - - data = e100_get_mdio_reg(dev, np->mii_if.phy_id, - MDIO_TDK_DIAGNOSTIC_REG); - full_duplex = (data & MDIO_TDK_DIAGNOSTIC_DPLX) ? 1 : 0; -} - -static void -broadcom_check_duplex(struct net_device* dev) -{ - unsigned long data; - struct net_local *np = netdev_priv(dev); - - data = e100_get_mdio_reg(dev, np->mii_if.phy_id, - MDIO_AUX_CTRL_STATUS_REG); - full_duplex = (data & MDIO_BC_FULL_DUPLEX_IND) ? 1 : 0; -} - -static void -intel_check_duplex(struct net_device* dev) -{ - unsigned long data; - struct net_local *np = netdev_priv(dev); - - data = e100_get_mdio_reg(dev, np->mii_if.phy_id, - MDIO_INT_STATUS_REG_2); - full_duplex = (data & MDIO_INT_FULL_DUPLEX_IND) ? 1 : 0; -} -#endif -static void -e100_set_duplex(struct net_device* dev, enum duplex new_duplex) -{ - struct net_local *np = netdev_priv(dev); - - spin_lock(&np->transceiver_lock); - if (new_duplex != current_duplex) { - current_duplex = new_duplex; - e100_negotiate(dev); - } - spin_unlock(&np->transceiver_lock); -} - -static int -e100_probe_transceiver(struct net_device* dev) -{ - int ret = 0; - -#if !defined(CONFIG_ETRAX_NO_PHY) - unsigned int phyid_high; - unsigned int phyid_low; - unsigned int oui; - struct transceiver_ops* ops = NULL; - struct net_local *np = netdev_priv(dev); - - spin_lock(&np->transceiver_lock); - - /* Probe MDIO physical address */ - for (np->mii_if.phy_id = 0; np->mii_if.phy_id <= 31; - np->mii_if.phy_id++) { - if (e100_get_mdio_reg(dev, - np->mii_if.phy_id, MII_BMSR) != 0xffff) - break; - } - if (np->mii_if.phy_id == 32) { - ret = -ENODEV; - goto out; - } - - /* Get manufacturer */ - phyid_high = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_PHYSID1); - phyid_low = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_PHYSID2); - oui = (phyid_high << 6) | (phyid_low >> 10); - - for (ops = &transceivers[0]; ops->oui; ops++) { - if (ops->oui == oui) - break; - } - transceiver = ops; -out: - spin_unlock(&np->transceiver_lock); -#endif - return ret; -} - -static int -e100_get_mdio_reg(struct net_device *dev, int phy_id, int location) -{ - unsigned short cmd; /* Data to be sent on MDIO port */ - int data; /* Data read from MDIO */ - int bitCounter; - - /* Start of frame, OP Code, Physical Address, Register Address */ - cmd = (MDIO_START << 14) | (MDIO_READ << 12) | (phy_id << 7) | - (location << 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(struct net_device *dev, int phy_id, int location, int value) -{ - int bitCounter; - unsigned short cmd; - - cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (phy_id << 7) | - (location << 2); - - e100_send_mdio_cmd(cmd, 1); - - /* Data... */ - for (bitCounter=15; bitCounter>=0 ; bitCounter--) { - e100_send_mdio_bit(GET_BIT(bitCounter, value)); - } - -} - -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(void) -{ - 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(struct net_device* dev) -{ - struct net_local *np = netdev_priv(dev); - unsigned short cmd; - unsigned short data; - int bitCounter; - - data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_BMCR); - - cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (np->mii_if.phy_id << 7) | (MII_BMCR << 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 = netdev_priv(dev); - unsigned long flags; - - spin_lock_irqsave(&np->lock, flags); - - printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name, - tx_done(dev) ? "IRQ problem" : "network cable problem"); - - /* remember we got an error */ - - dev->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(dev); - - /* 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); - spin_unlock_irqrestore(&np->lock, flags); -} - - -/* 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 = netdev_priv(dev); - unsigned char *buf = skb->data; - unsigned long flags; - -#ifdef ETHDEBUG - printk("send packet len %d\n", length); -#endif - spin_lock_irqsave(&np->lock, flags); /* protect from tx_interrupt and ourself */ - - myNextTxDesc->skb = skb; - - netif_trans_update(dev); /* NETIF_F_LLTX driver :( */ - - e100_hardware_send_packet(np, buf, skb->len); - - myNextTxDesc = phys_to_virt(myNextTxDesc->descr.next); - - /* Stop queue if full */ - if (myNextTxDesc == myFirstTxDesc) { - netif_stop_queue(dev); - } - - spin_unlock_irqrestore(&np->lock, flags); - - return NETDEV_TX_OK; -} - -/* - * The typical workload of the driver: - * Handle the network interface interrupts. - */ - -static irqreturn_t -e100rxtx_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = (struct net_device *)dev_id; - unsigned long irqbits; - - /* - * Note that both rx and tx interrupts are blocked at this point, - * regardless of which got us here. - */ - - irqbits = *R_IRQ_MASK2_RD; - - /* 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)) && - (myNextRxDesc != myLastRxDesc)) { - /* Take out the buffer and give it to the OS, then - * allocate a new buffer to put a packet in. - */ - e100_rx(dev); - dev->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 (virt_to_phys(myFirstTxDesc) != *R_DMA_CH0_FIRST && - (netif_queue_stopped(dev) || myFirstTxDesc != myNextTxDesc)) { - dev->stats.tx_bytes += myFirstTxDesc->skb->len; - dev->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); - /* Wake up queue. */ - netif_wake_queue(dev); - } - - if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma0_eop, active)) { - /* acknowledge the eop interrupt. */ - *R_DMA_CH0_CLR_INTR = IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop, do); - } - - return IRQ_HANDLED; -} - -static irqreturn_t -e100nw_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = (struct net_device *)dev_id; - unsigned long irqbits = *R_IRQ_MASK0_RD; - - /* check for underrun irq */ - if (irqbits & IO_STATE(R_IRQ_MASK0_RD, underrun, active)) { - SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr); - *R_NETWORK_TR_CTRL = network_tr_ctrl_shadow; - SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, nop); - dev->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(&dev->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)) { - SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr); - *R_NETWORK_TR_CTRL = network_tr_ctrl_shadow; - SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, nop); - dev->stats.tx_errors++; - D(printk("ethernet excessive collisions!\n")); - } - return IRQ_HANDLED; -} - -/* 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 = netdev_priv(dev); - unsigned char *skb_data_ptr; -#ifdef ETHDEBUG - int i; -#endif - etrax_eth_descr *prevRxDesc; /* The descriptor right before myNextRxDesc */ - spin_lock(&np->led_lock); - 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); - } - spin_unlock(&np->led_lock); - - length = myNextRxDesc->descr.hw_len - 4; - dev->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) { - dev->stats.rx_errors++; - printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); - goto update_nextrxdesc; - } - - 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_pointer(skb), - skb_end_pointer(skb)); - 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) { - dev->stats.rx_errors++; - printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); - goto update_nextrxdesc; - } - 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->protocol = eth_type_trans(skb, dev); - - /* Send the packet to the upper layers */ - netif_rx(skb); - - update_nextrxdesc: - /* Prepare for next packet */ - myNextRxDesc->descr.status = 0; - prevRxDesc = 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(); - prevRxDesc->descr.ctrl |= d_eol; - myLastRxDesc->descr.ctrl &= ~d_eol; - myLastRxDesc = prevRxDesc; - rx_queue_len = 0; - } -} - -/* The inverse routine to net_open(). */ -static int -e100_close(struct net_device *dev) -{ - 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); - - cris_free_dma(NETWORK_TX_DMA_NBR, cardname); - cris_free_dma(NETWORK_RX_DMA_NBR, cardname); - - /* Update the statistics here. */ - - update_rx_stats(&dev->stats); - update_tx_stats(&dev->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 = if_mii(ifr); - struct net_local *np = netdev_priv(dev); - int rc = 0; - int old_autoneg; - - spin_lock(&np->lock); /* Preempt protection */ - switch (cmd) { - /* The ioctls below should be considered obsolete but are */ - /* still present for compatibility with old scripts/apps */ - case SET_ETH_SPEED_10: /* 10 Mbps */ - e100_set_speed(dev, 10); - break; - case SET_ETH_SPEED_100: /* 100 Mbps */ - e100_set_speed(dev, 100); - break; - case SET_ETH_SPEED_AUTO: /* Auto-negotiate speed */ - e100_set_speed(dev, 0); - break; - case SET_ETH_DUPLEX_HALF: /* Half duplex */ - e100_set_duplex(dev, half); - break; - case SET_ETH_DUPLEX_FULL: /* Full duplex */ - e100_set_duplex(dev, full); - break; - case SET_ETH_DUPLEX_AUTO: /* Auto-negotiate duplex */ - e100_set_duplex(dev, autoneg); - break; - case SET_ETH_AUTONEG: - old_autoneg = autoneg_normal; - autoneg_normal = *(int*)data; - if (autoneg_normal != old_autoneg) - e100_negotiate(dev); - break; - default: - rc = generic_mii_ioctl(&np->mii_if, if_mii(ifr), - cmd, NULL); - break; - } - spin_unlock(&np->lock); - return rc; -} - -static int e100_get_link_ksettings(struct net_device *dev, - struct ethtool_link_ksettings *cmd) -{ - struct net_local *np = netdev_priv(dev); - u32 supported; - - spin_lock_irq(&np->lock); - mii_ethtool_get_link_ksettings(&np->mii_if, cmd); - spin_unlock_irq(&np->lock); - - /* The PHY may support 1000baseT, but the Etrax100 does not. */ - ethtool_convert_link_mode_to_legacy_u32(&supported, - cmd->link_modes.supported); - - supported &= ~(SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full); - - ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, - supported); - - return 0; -} - -static int e100_set_link_ksettings(struct net_device *dev, - const struct ethtool_link_ksettings *ecmd) -{ - if (ecmd->base.autoneg == AUTONEG_ENABLE) { - e100_set_duplex(dev, autoneg); - e100_set_speed(dev, 0); - } else { - e100_set_duplex(dev, ecmd->base.duplex == DUPLEX_HALF ? - half : full); - e100_set_speed(dev, ecmd->base.speed == SPEED_10 ? 10 : 100); - } - - return 0; -} - -static void e100_get_drvinfo(struct net_device *dev, - struct ethtool_drvinfo *info) -{ - strlcpy(info->driver, "ETRAX 100LX", sizeof(info->driver)); - strlcpy(info->version, "$Revision: 1.31 $", sizeof(info->version)); - strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); - strlcpy(info->bus_info, "N/A", sizeof(info->bus_info)); -} - -static int e100_nway_reset(struct net_device *dev) -{ - if (current_duplex == autoneg && current_speed_selection == 0) - e100_negotiate(dev); - return 0; -} - -static const struct ethtool_ops e100_ethtool_ops = { - .get_drvinfo = e100_get_drvinfo, - .nway_reset = e100_nway_reset, - .get_link = ethtool_op_get_link, - .get_link_ksettings = e100_get_link_ksettings, - .set_link_ksettings = e100_set_link_ksettings, -}; - -static int -e100_set_config(struct net_device *dev, struct ifmap *map) -{ - struct net_local *np = netdev_priv(dev); - - spin_lock(&np->lock); /* Preempt protection */ - - switch(map->port) { - case IF_PORT_UNKNOWN: - /* Use autoneg */ - e100_set_speed(dev, 0); - e100_set_duplex(dev, autoneg); - break; - case IF_PORT_10BASET: - e100_set_speed(dev, 10); - e100_set_duplex(dev, autoneg); - break; - case IF_PORT_100BASET: - case IF_PORT_100BASETX: - e100_set_speed(dev, 100); - e100_set_duplex(dev, autoneg); - break; - case IF_PORT_100BASEFX: - case IF_PORT_10BASE2: - case IF_PORT_AUI: - spin_unlock(&np->lock); - return -EOPNOTSUPP; - default: - printk(KERN_ERR "%s: Invalid media selected", dev->name); - spin_unlock(&np->lock); - return -EINVAL; - } - spin_unlock(&np->lock); - 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); -} - -/* - * 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 = netdev_priv(dev); - unsigned long flags; - - spin_lock_irqsave(&lp->lock, flags); - - update_rx_stats(&dev->stats); - update_tx_stats(&dev->stats); - - spin_unlock_irqrestore(&lp->lock, flags); - return &dev->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) -{ - struct net_local *lp = netdev_priv(dev); - int num_addr = netdev_mc_count(dev); - unsigned long int lo_bits; - unsigned long int hi_bits; - - spin_lock(&lp->lock); - 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 netdev_hw_addr *ha; - char *baddr; - - lo_bits = 0x00000000ul; - hi_bits = 0x00000000ul; - netdev_for_each_mc_addr(ha, dev) { - /* Calculate the hash index for the GA registers */ - - hash_ix = 0; - baddr = ha->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); - } - } - /* 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; - spin_unlock(&lp->lock); -} - -void -e100_hardware_send_packet(struct net_local *np, char *buf, int length) -{ - D(printk("e100 send pack, buf 0x%x len %d\n", buf, length)); - - spin_lock(&np->led_lock); - 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); - } - spin_unlock(&np->led_lock); - - /* 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(struct timer_list *unused) -{ - struct net_device *dev = timer_dev; - struct net_local *np = netdev_priv(dev); - - spin_lock(&np->led_lock); - - 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; - } - - spin_unlock(&np->led_lock); -} - -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 */ - CRIS_LED_NETWORK_SET(CRIS_LED_OFF); - } else if (light_leds) { - if (current_speed == 10) { - CRIS_LED_NETWORK_SET(CRIS_LED_ORANGE); - } else { - CRIS_LED_NETWORK_SET(CRIS_LED_GREEN); - } - } else { - CRIS_LED_NETWORK_SET(CRIS_LED_OFF); - } -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -static void -e100_netpoll(struct net_device* netdev) -{ - e100rxtx_interrupt(NETWORK_DMA_TX_IRQ_NBR, netdev); -} -#endif - - -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); |