From 3f2df32c9cb60f411a10725c12aa6e4555143d5f Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Fri, 9 Mar 2018 17:43:16 +0100
Subject: net: remove cris etrax ethernet driver
The cris architecture is getting removed, so we don't need the
ethernet driver any more either.
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/net/Makefile | 1 -
drivers/net/cris/Makefile | 1 -
drivers/net/cris/eth_v10.c | 1742 --------------------------------------------
3 files changed, 1744 deletions(-)
delete mode 100644 drivers/net/cris/Makefile
delete mode 100644 drivers/net/cris/eth_v10.c
(limited to 'drivers')
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 04c3b747812c..91e67e375dd4 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -40,7 +40,6 @@ obj-$(CONFIG_ARCNET) += arcnet/
obj-$(CONFIG_DEV_APPLETALK) += appletalk/
obj-$(CONFIG_CAIF) += caif/
obj-$(CONFIG_CAN) += can/
-obj-$(CONFIG_ETRAX_ETHERNET) += cris/
obj-$(CONFIG_NET_DSA) += dsa/
obj-$(CONFIG_ETHERNET) += ethernet/
obj-$(CONFIG_FDDI) += fddi/
diff --git a/drivers/net/cris/Makefile b/drivers/net/cris/Makefile
deleted file mode 100644
index b4e8932227b6..000000000000
--- a/drivers/net/cris/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-obj-$(CONFIG_ETRAX_ARCH_V10) += eth_v10.o
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);
--
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