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807540baae
Change "return (EXPR);" to "return EXPR;" return is not a function, parentheses are not required. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1727 lines
47 KiB
C
1727 lines
47 KiB
C
/*******************************************************************************
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Copyright(c) 2006 Tundra Semiconductor Corporation.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59
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Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*******************************************************************************/
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/* This driver is based on the driver code originally developed
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* for the Intel IOC80314 (ForestLake) Gigabit Ethernet by
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* scott.wood@timesys.com * Copyright (C) 2003 TimeSys Corporation
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*
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* Currently changes from original version are:
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* - porting to Tsi108-based platform and kernel 2.6 (kong.lai@tundra.com)
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* - modifications to handle two ports independently and support for
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* additional PHY devices (alexandre.bounine@tundra.com)
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* - Get hardware information from platform device. (tie-fei.zang@freescale.com)
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*
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/net.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/ethtool.h>
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#include <linux/skbuff.h>
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#include <linux/spinlock.h>
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#include <linux/delay.h>
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#include <linux/crc32.h>
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#include <linux/mii.h>
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#include <linux/device.h>
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#include <linux/pci.h>
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#include <linux/rtnetlink.h>
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#include <linux/timer.h>
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#include <linux/platform_device.h>
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#include <linux/gfp.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#include <asm/tsi108.h>
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#include "tsi108_eth.h"
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#define MII_READ_DELAY 10000 /* max link wait time in msec */
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#define TSI108_RXRING_LEN 256
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/* NOTE: The driver currently does not support receiving packets
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* larger than the buffer size, so don't decrease this (unless you
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* want to add such support).
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*/
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#define TSI108_RXBUF_SIZE 1536
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#define TSI108_TXRING_LEN 256
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#define TSI108_TX_INT_FREQ 64
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/* Check the phy status every half a second. */
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#define CHECK_PHY_INTERVAL (HZ/2)
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static int tsi108_init_one(struct platform_device *pdev);
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static int tsi108_ether_remove(struct platform_device *pdev);
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struct tsi108_prv_data {
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void __iomem *regs; /* Base of normal regs */
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void __iomem *phyregs; /* Base of register bank used for PHY access */
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struct net_device *dev;
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struct napi_struct napi;
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unsigned int phy; /* Index of PHY for this interface */
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unsigned int irq_num;
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unsigned int id;
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unsigned int phy_type;
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struct timer_list timer;/* Timer that triggers the check phy function */
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unsigned int rxtail; /* Next entry in rxring to read */
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unsigned int rxhead; /* Next entry in rxring to give a new buffer */
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unsigned int rxfree; /* Number of free, allocated RX buffers */
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unsigned int rxpending; /* Non-zero if there are still descriptors
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* to be processed from a previous descriptor
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* interrupt condition that has been cleared */
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unsigned int txtail; /* Next TX descriptor to check status on */
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unsigned int txhead; /* Next TX descriptor to use */
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/* Number of free TX descriptors. This could be calculated from
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* rxhead and rxtail if one descriptor were left unused to disambiguate
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* full and empty conditions, but it's simpler to just keep track
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* explicitly. */
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unsigned int txfree;
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unsigned int phy_ok; /* The PHY is currently powered on. */
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/* PHY status (duplex is 1 for half, 2 for full,
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* so that the default 0 indicates that neither has
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* yet been configured). */
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unsigned int link_up;
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unsigned int speed;
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unsigned int duplex;
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tx_desc *txring;
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rx_desc *rxring;
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struct sk_buff *txskbs[TSI108_TXRING_LEN];
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struct sk_buff *rxskbs[TSI108_RXRING_LEN];
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dma_addr_t txdma, rxdma;
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/* txlock nests in misclock and phy_lock */
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spinlock_t txlock, misclock;
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/* stats is used to hold the upper bits of each hardware counter,
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* and tmpstats is used to hold the full values for returning
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* to the caller of get_stats(). They must be separate in case
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* an overflow interrupt occurs before the stats are consumed.
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*/
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struct net_device_stats stats;
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struct net_device_stats tmpstats;
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/* These stats are kept separate in hardware, thus require individual
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* fields for handling carry. They are combined in get_stats.
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*/
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unsigned long rx_fcs; /* Add to rx_frame_errors */
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unsigned long rx_short_fcs; /* Add to rx_frame_errors */
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unsigned long rx_long_fcs; /* Add to rx_frame_errors */
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unsigned long rx_underruns; /* Add to rx_length_errors */
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unsigned long rx_overruns; /* Add to rx_length_errors */
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unsigned long tx_coll_abort; /* Add to tx_aborted_errors/collisions */
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unsigned long tx_pause_drop; /* Add to tx_aborted_errors */
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unsigned long mc_hash[16];
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u32 msg_enable; /* debug message level */
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struct mii_if_info mii_if;
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unsigned int init_media;
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};
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/* Structure for a device driver */
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static struct platform_driver tsi_eth_driver = {
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.probe = tsi108_init_one,
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.remove = tsi108_ether_remove,
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.driver = {
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.name = "tsi-ethernet",
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.owner = THIS_MODULE,
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},
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};
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static void tsi108_timed_checker(unsigned long dev_ptr);
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static void dump_eth_one(struct net_device *dev)
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{
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struct tsi108_prv_data *data = netdev_priv(dev);
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printk("Dumping %s...\n", dev->name);
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printk("intstat %x intmask %x phy_ok %d"
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" link %d speed %d duplex %d\n",
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TSI_READ(TSI108_EC_INTSTAT),
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TSI_READ(TSI108_EC_INTMASK), data->phy_ok,
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data->link_up, data->speed, data->duplex);
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printk("TX: head %d, tail %d, free %d, stat %x, estat %x, err %x\n",
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data->txhead, data->txtail, data->txfree,
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TSI_READ(TSI108_EC_TXSTAT),
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TSI_READ(TSI108_EC_TXESTAT),
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TSI_READ(TSI108_EC_TXERR));
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printk("RX: head %d, tail %d, free %d, stat %x,"
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" estat %x, err %x, pending %d\n\n",
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data->rxhead, data->rxtail, data->rxfree,
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TSI_READ(TSI108_EC_RXSTAT),
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TSI_READ(TSI108_EC_RXESTAT),
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TSI_READ(TSI108_EC_RXERR), data->rxpending);
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}
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/* Synchronization is needed between the thread and up/down events.
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* Note that the PHY is accessed through the same registers for both
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* interfaces, so this can't be made interface-specific.
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*/
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static DEFINE_SPINLOCK(phy_lock);
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static int tsi108_read_mii(struct tsi108_prv_data *data, int reg)
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{
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unsigned i;
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TSI_WRITE_PHY(TSI108_MAC_MII_ADDR,
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(data->phy << TSI108_MAC_MII_ADDR_PHY) |
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(reg << TSI108_MAC_MII_ADDR_REG));
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TSI_WRITE_PHY(TSI108_MAC_MII_CMD, 0);
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TSI_WRITE_PHY(TSI108_MAC_MII_CMD, TSI108_MAC_MII_CMD_READ);
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for (i = 0; i < 100; i++) {
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if (!(TSI_READ_PHY(TSI108_MAC_MII_IND) &
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(TSI108_MAC_MII_IND_NOTVALID | TSI108_MAC_MII_IND_BUSY)))
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break;
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udelay(10);
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}
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if (i == 100)
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return 0xffff;
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else
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return TSI_READ_PHY(TSI108_MAC_MII_DATAIN);
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}
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static void tsi108_write_mii(struct tsi108_prv_data *data,
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int reg, u16 val)
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{
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unsigned i = 100;
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TSI_WRITE_PHY(TSI108_MAC_MII_ADDR,
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(data->phy << TSI108_MAC_MII_ADDR_PHY) |
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(reg << TSI108_MAC_MII_ADDR_REG));
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TSI_WRITE_PHY(TSI108_MAC_MII_DATAOUT, val);
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while (i--) {
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if(!(TSI_READ_PHY(TSI108_MAC_MII_IND) &
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TSI108_MAC_MII_IND_BUSY))
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break;
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udelay(10);
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}
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}
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static int tsi108_mdio_read(struct net_device *dev, int addr, int reg)
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{
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struct tsi108_prv_data *data = netdev_priv(dev);
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return tsi108_read_mii(data, reg);
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}
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static void tsi108_mdio_write(struct net_device *dev, int addr, int reg, int val)
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{
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struct tsi108_prv_data *data = netdev_priv(dev);
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tsi108_write_mii(data, reg, val);
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}
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static inline void tsi108_write_tbi(struct tsi108_prv_data *data,
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int reg, u16 val)
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{
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unsigned i = 1000;
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TSI_WRITE(TSI108_MAC_MII_ADDR,
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(0x1e << TSI108_MAC_MII_ADDR_PHY)
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| (reg << TSI108_MAC_MII_ADDR_REG));
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TSI_WRITE(TSI108_MAC_MII_DATAOUT, val);
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while(i--) {
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if(!(TSI_READ(TSI108_MAC_MII_IND) & TSI108_MAC_MII_IND_BUSY))
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return;
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udelay(10);
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}
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printk(KERN_ERR "%s function time out\n", __func__);
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}
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static int mii_speed(struct mii_if_info *mii)
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{
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int advert, lpa, val, media;
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int lpa2 = 0;
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int speed;
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if (!mii_link_ok(mii))
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return 0;
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val = (*mii->mdio_read) (mii->dev, mii->phy_id, MII_BMSR);
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if ((val & BMSR_ANEGCOMPLETE) == 0)
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return 0;
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advert = (*mii->mdio_read) (mii->dev, mii->phy_id, MII_ADVERTISE);
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lpa = (*mii->mdio_read) (mii->dev, mii->phy_id, MII_LPA);
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media = mii_nway_result(advert & lpa);
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if (mii->supports_gmii)
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lpa2 = mii->mdio_read(mii->dev, mii->phy_id, MII_STAT1000);
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speed = lpa2 & (LPA_1000FULL | LPA_1000HALF) ? 1000 :
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(media & (ADVERTISE_100FULL | ADVERTISE_100HALF) ? 100 : 10);
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return speed;
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}
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static void tsi108_check_phy(struct net_device *dev)
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{
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struct tsi108_prv_data *data = netdev_priv(dev);
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u32 mac_cfg2_reg, portctrl_reg;
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u32 duplex;
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u32 speed;
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unsigned long flags;
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spin_lock_irqsave(&phy_lock, flags);
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if (!data->phy_ok)
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goto out;
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duplex = mii_check_media(&data->mii_if, netif_msg_link(data), data->init_media);
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data->init_media = 0;
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if (netif_carrier_ok(dev)) {
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speed = mii_speed(&data->mii_if);
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if ((speed != data->speed) || duplex) {
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mac_cfg2_reg = TSI_READ(TSI108_MAC_CFG2);
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portctrl_reg = TSI_READ(TSI108_EC_PORTCTRL);
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mac_cfg2_reg &= ~TSI108_MAC_CFG2_IFACE_MASK;
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if (speed == 1000) {
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mac_cfg2_reg |= TSI108_MAC_CFG2_GIG;
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portctrl_reg &= ~TSI108_EC_PORTCTRL_NOGIG;
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} else {
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mac_cfg2_reg |= TSI108_MAC_CFG2_NOGIG;
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portctrl_reg |= TSI108_EC_PORTCTRL_NOGIG;
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}
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data->speed = speed;
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if (data->mii_if.full_duplex) {
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mac_cfg2_reg |= TSI108_MAC_CFG2_FULLDUPLEX;
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portctrl_reg &= ~TSI108_EC_PORTCTRL_HALFDUPLEX;
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data->duplex = 2;
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} else {
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mac_cfg2_reg &= ~TSI108_MAC_CFG2_FULLDUPLEX;
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portctrl_reg |= TSI108_EC_PORTCTRL_HALFDUPLEX;
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data->duplex = 1;
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}
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TSI_WRITE(TSI108_MAC_CFG2, mac_cfg2_reg);
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TSI_WRITE(TSI108_EC_PORTCTRL, portctrl_reg);
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}
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if (data->link_up == 0) {
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/* The manual says it can take 3-4 usecs for the speed change
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* to take effect.
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*/
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udelay(5);
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spin_lock(&data->txlock);
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if (is_valid_ether_addr(dev->dev_addr) && data->txfree)
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netif_wake_queue(dev);
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data->link_up = 1;
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spin_unlock(&data->txlock);
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}
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} else {
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if (data->link_up == 1) {
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netif_stop_queue(dev);
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data->link_up = 0;
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printk(KERN_NOTICE "%s : link is down\n", dev->name);
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}
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goto out;
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}
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out:
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spin_unlock_irqrestore(&phy_lock, flags);
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}
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static inline void
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tsi108_stat_carry_one(int carry, int carry_bit, int carry_shift,
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unsigned long *upper)
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{
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if (carry & carry_bit)
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*upper += carry_shift;
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}
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static void tsi108_stat_carry(struct net_device *dev)
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{
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struct tsi108_prv_data *data = netdev_priv(dev);
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u32 carry1, carry2;
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spin_lock_irq(&data->misclock);
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carry1 = TSI_READ(TSI108_STAT_CARRY1);
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carry2 = TSI_READ(TSI108_STAT_CARRY2);
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TSI_WRITE(TSI108_STAT_CARRY1, carry1);
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TSI_WRITE(TSI108_STAT_CARRY2, carry2);
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXBYTES,
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TSI108_STAT_RXBYTES_CARRY, &data->stats.rx_bytes);
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXPKTS,
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TSI108_STAT_RXPKTS_CARRY,
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&data->stats.rx_packets);
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXFCS,
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TSI108_STAT_RXFCS_CARRY, &data->rx_fcs);
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXMCAST,
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TSI108_STAT_RXMCAST_CARRY,
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&data->stats.multicast);
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXALIGN,
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TSI108_STAT_RXALIGN_CARRY,
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&data->stats.rx_frame_errors);
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXLENGTH,
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TSI108_STAT_RXLENGTH_CARRY,
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&data->stats.rx_length_errors);
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|
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXRUNT,
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TSI108_STAT_RXRUNT_CARRY, &data->rx_underruns);
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXJUMBO,
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TSI108_STAT_RXJUMBO_CARRY, &data->rx_overruns);
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|
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXFRAG,
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TSI108_STAT_RXFRAG_CARRY, &data->rx_short_fcs);
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXJABBER,
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TSI108_STAT_RXJABBER_CARRY, &data->rx_long_fcs);
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|
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXDROP,
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TSI108_STAT_RXDROP_CARRY,
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&data->stats.rx_missed_errors);
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|
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tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXBYTES,
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TSI108_STAT_TXBYTES_CARRY, &data->stats.tx_bytes);
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tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXPKTS,
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TSI108_STAT_TXPKTS_CARRY,
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&data->stats.tx_packets);
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tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXEXDEF,
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TSI108_STAT_TXEXDEF_CARRY,
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&data->stats.tx_aborted_errors);
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tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXEXCOL,
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TSI108_STAT_TXEXCOL_CARRY, &data->tx_coll_abort);
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|
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tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXTCOL,
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TSI108_STAT_TXTCOL_CARRY,
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&data->stats.collisions);
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|
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tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXPAUSE,
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TSI108_STAT_TXPAUSEDROP_CARRY,
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&data->tx_pause_drop);
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|
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spin_unlock_irq(&data->misclock);
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}
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|
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/* Read a stat counter atomically with respect to carries.
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* data->misclock must be held.
|
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*/
|
|
static inline unsigned long
|
|
tsi108_read_stat(struct tsi108_prv_data * data, int reg, int carry_bit,
|
|
int carry_shift, unsigned long *upper)
|
|
{
|
|
int carryreg;
|
|
unsigned long val;
|
|
|
|
if (reg < 0xb0)
|
|
carryreg = TSI108_STAT_CARRY1;
|
|
else
|
|
carryreg = TSI108_STAT_CARRY2;
|
|
|
|
again:
|
|
val = TSI_READ(reg) | *upper;
|
|
|
|
/* Check to see if it overflowed, but the interrupt hasn't
|
|
* been serviced yet. If so, handle the carry here, and
|
|
* try again.
|
|
*/
|
|
|
|
if (unlikely(TSI_READ(carryreg) & carry_bit)) {
|
|
*upper += carry_shift;
|
|
TSI_WRITE(carryreg, carry_bit);
|
|
goto again;
|
|
}
|
|
|
|
return val;
|
|
}
|
|
|
|
static struct net_device_stats *tsi108_get_stats(struct net_device *dev)
|
|
{
|
|
unsigned long excol;
|
|
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
spin_lock_irq(&data->misclock);
|
|
|
|
data->tmpstats.rx_packets =
|
|
tsi108_read_stat(data, TSI108_STAT_RXPKTS,
|
|
TSI108_STAT_CARRY1_RXPKTS,
|
|
TSI108_STAT_RXPKTS_CARRY, &data->stats.rx_packets);
|
|
|
|
data->tmpstats.tx_packets =
|
|
tsi108_read_stat(data, TSI108_STAT_TXPKTS,
|
|
TSI108_STAT_CARRY2_TXPKTS,
|
|
TSI108_STAT_TXPKTS_CARRY, &data->stats.tx_packets);
|
|
|
|
data->tmpstats.rx_bytes =
|
|
tsi108_read_stat(data, TSI108_STAT_RXBYTES,
|
|
TSI108_STAT_CARRY1_RXBYTES,
|
|
TSI108_STAT_RXBYTES_CARRY, &data->stats.rx_bytes);
|
|
|
|
data->tmpstats.tx_bytes =
|
|
tsi108_read_stat(data, TSI108_STAT_TXBYTES,
|
|
TSI108_STAT_CARRY2_TXBYTES,
|
|
TSI108_STAT_TXBYTES_CARRY, &data->stats.tx_bytes);
|
|
|
|
data->tmpstats.multicast =
|
|
tsi108_read_stat(data, TSI108_STAT_RXMCAST,
|
|
TSI108_STAT_CARRY1_RXMCAST,
|
|
TSI108_STAT_RXMCAST_CARRY, &data->stats.multicast);
|
|
|
|
excol = tsi108_read_stat(data, TSI108_STAT_TXEXCOL,
|
|
TSI108_STAT_CARRY2_TXEXCOL,
|
|
TSI108_STAT_TXEXCOL_CARRY,
|
|
&data->tx_coll_abort);
|
|
|
|
data->tmpstats.collisions =
|
|
tsi108_read_stat(data, TSI108_STAT_TXTCOL,
|
|
TSI108_STAT_CARRY2_TXTCOL,
|
|
TSI108_STAT_TXTCOL_CARRY, &data->stats.collisions);
|
|
|
|
data->tmpstats.collisions += excol;
|
|
|
|
data->tmpstats.rx_length_errors =
|
|
tsi108_read_stat(data, TSI108_STAT_RXLENGTH,
|
|
TSI108_STAT_CARRY1_RXLENGTH,
|
|
TSI108_STAT_RXLENGTH_CARRY,
|
|
&data->stats.rx_length_errors);
|
|
|
|
data->tmpstats.rx_length_errors +=
|
|
tsi108_read_stat(data, TSI108_STAT_RXRUNT,
|
|
TSI108_STAT_CARRY1_RXRUNT,
|
|
TSI108_STAT_RXRUNT_CARRY, &data->rx_underruns);
|
|
|
|
data->tmpstats.rx_length_errors +=
|
|
tsi108_read_stat(data, TSI108_STAT_RXJUMBO,
|
|
TSI108_STAT_CARRY1_RXJUMBO,
|
|
TSI108_STAT_RXJUMBO_CARRY, &data->rx_overruns);
|
|
|
|
data->tmpstats.rx_frame_errors =
|
|
tsi108_read_stat(data, TSI108_STAT_RXALIGN,
|
|
TSI108_STAT_CARRY1_RXALIGN,
|
|
TSI108_STAT_RXALIGN_CARRY,
|
|
&data->stats.rx_frame_errors);
|
|
|
|
data->tmpstats.rx_frame_errors +=
|
|
tsi108_read_stat(data, TSI108_STAT_RXFCS,
|
|
TSI108_STAT_CARRY1_RXFCS, TSI108_STAT_RXFCS_CARRY,
|
|
&data->rx_fcs);
|
|
|
|
data->tmpstats.rx_frame_errors +=
|
|
tsi108_read_stat(data, TSI108_STAT_RXFRAG,
|
|
TSI108_STAT_CARRY1_RXFRAG,
|
|
TSI108_STAT_RXFRAG_CARRY, &data->rx_short_fcs);
|
|
|
|
data->tmpstats.rx_missed_errors =
|
|
tsi108_read_stat(data, TSI108_STAT_RXDROP,
|
|
TSI108_STAT_CARRY1_RXDROP,
|
|
TSI108_STAT_RXDROP_CARRY,
|
|
&data->stats.rx_missed_errors);
|
|
|
|
/* These three are maintained by software. */
|
|
data->tmpstats.rx_fifo_errors = data->stats.rx_fifo_errors;
|
|
data->tmpstats.rx_crc_errors = data->stats.rx_crc_errors;
|
|
|
|
data->tmpstats.tx_aborted_errors =
|
|
tsi108_read_stat(data, TSI108_STAT_TXEXDEF,
|
|
TSI108_STAT_CARRY2_TXEXDEF,
|
|
TSI108_STAT_TXEXDEF_CARRY,
|
|
&data->stats.tx_aborted_errors);
|
|
|
|
data->tmpstats.tx_aborted_errors +=
|
|
tsi108_read_stat(data, TSI108_STAT_TXPAUSEDROP,
|
|
TSI108_STAT_CARRY2_TXPAUSE,
|
|
TSI108_STAT_TXPAUSEDROP_CARRY,
|
|
&data->tx_pause_drop);
|
|
|
|
data->tmpstats.tx_aborted_errors += excol;
|
|
|
|
data->tmpstats.tx_errors = data->tmpstats.tx_aborted_errors;
|
|
data->tmpstats.rx_errors = data->tmpstats.rx_length_errors +
|
|
data->tmpstats.rx_crc_errors +
|
|
data->tmpstats.rx_frame_errors +
|
|
data->tmpstats.rx_fifo_errors + data->tmpstats.rx_missed_errors;
|
|
|
|
spin_unlock_irq(&data->misclock);
|
|
return &data->tmpstats;
|
|
}
|
|
|
|
static void tsi108_restart_rx(struct tsi108_prv_data * data, struct net_device *dev)
|
|
{
|
|
TSI_WRITE(TSI108_EC_RXQ_PTRHIGH,
|
|
TSI108_EC_RXQ_PTRHIGH_VALID);
|
|
|
|
TSI_WRITE(TSI108_EC_RXCTRL, TSI108_EC_RXCTRL_GO
|
|
| TSI108_EC_RXCTRL_QUEUE0);
|
|
}
|
|
|
|
static void tsi108_restart_tx(struct tsi108_prv_data * data)
|
|
{
|
|
TSI_WRITE(TSI108_EC_TXQ_PTRHIGH,
|
|
TSI108_EC_TXQ_PTRHIGH_VALID);
|
|
|
|
TSI_WRITE(TSI108_EC_TXCTRL, TSI108_EC_TXCTRL_IDLEINT |
|
|
TSI108_EC_TXCTRL_GO | TSI108_EC_TXCTRL_QUEUE0);
|
|
}
|
|
|
|
/* txlock must be held by caller, with IRQs disabled, and
|
|
* with permission to re-enable them when the lock is dropped.
|
|
*/
|
|
static void tsi108_complete_tx(struct net_device *dev)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
int tx;
|
|
struct sk_buff *skb;
|
|
int release = 0;
|
|
|
|
while (!data->txfree || data->txhead != data->txtail) {
|
|
tx = data->txtail;
|
|
|
|
if (data->txring[tx].misc & TSI108_TX_OWN)
|
|
break;
|
|
|
|
skb = data->txskbs[tx];
|
|
|
|
if (!(data->txring[tx].misc & TSI108_TX_OK))
|
|
printk("%s: bad tx packet, misc %x\n",
|
|
dev->name, data->txring[tx].misc);
|
|
|
|
data->txtail = (data->txtail + 1) % TSI108_TXRING_LEN;
|
|
data->txfree++;
|
|
|
|
if (data->txring[tx].misc & TSI108_TX_EOF) {
|
|
dev_kfree_skb_any(skb);
|
|
release++;
|
|
}
|
|
}
|
|
|
|
if (release) {
|
|
if (is_valid_ether_addr(dev->dev_addr) && data->link_up)
|
|
netif_wake_queue(dev);
|
|
}
|
|
}
|
|
|
|
static int tsi108_send_packet(struct sk_buff * skb, struct net_device *dev)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
int frags = skb_shinfo(skb)->nr_frags + 1;
|
|
int i;
|
|
|
|
if (!data->phy_ok && net_ratelimit())
|
|
printk(KERN_ERR "%s: Transmit while PHY is down!\n", dev->name);
|
|
|
|
if (!data->link_up) {
|
|
printk(KERN_ERR "%s: Transmit while link is down!\n",
|
|
dev->name);
|
|
netif_stop_queue(dev);
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
if (data->txfree < MAX_SKB_FRAGS + 1) {
|
|
netif_stop_queue(dev);
|
|
|
|
if (net_ratelimit())
|
|
printk(KERN_ERR "%s: Transmit with full tx ring!\n",
|
|
dev->name);
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
if (data->txfree - frags < MAX_SKB_FRAGS + 1) {
|
|
netif_stop_queue(dev);
|
|
}
|
|
|
|
spin_lock_irq(&data->txlock);
|
|
|
|
for (i = 0; i < frags; i++) {
|
|
int misc = 0;
|
|
int tx = data->txhead;
|
|
|
|
/* This is done to mark every TSI108_TX_INT_FREQ tx buffers with
|
|
* the interrupt bit. TX descriptor-complete interrupts are
|
|
* enabled when the queue fills up, and masked when there is
|
|
* still free space. This way, when saturating the outbound
|
|
* link, the tx interrupts are kept to a reasonable level.
|
|
* When the queue is not full, reclamation of skbs still occurs
|
|
* as new packets are transmitted, or on a queue-empty
|
|
* interrupt.
|
|
*/
|
|
|
|
if ((tx % TSI108_TX_INT_FREQ == 0) &&
|
|
((TSI108_TXRING_LEN - data->txfree) >= TSI108_TX_INT_FREQ))
|
|
misc = TSI108_TX_INT;
|
|
|
|
data->txskbs[tx] = skb;
|
|
|
|
if (i == 0) {
|
|
data->txring[tx].buf0 = dma_map_single(NULL, skb->data,
|
|
skb_headlen(skb), DMA_TO_DEVICE);
|
|
data->txring[tx].len = skb_headlen(skb);
|
|
misc |= TSI108_TX_SOF;
|
|
} else {
|
|
skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1];
|
|
|
|
data->txring[tx].buf0 =
|
|
dma_map_page(NULL, frag->page, frag->page_offset,
|
|
frag->size, DMA_TO_DEVICE);
|
|
data->txring[tx].len = frag->size;
|
|
}
|
|
|
|
if (i == frags - 1)
|
|
misc |= TSI108_TX_EOF;
|
|
|
|
if (netif_msg_pktdata(data)) {
|
|
int i;
|
|
printk("%s: Tx Frame contents (%d)\n", dev->name,
|
|
skb->len);
|
|
for (i = 0; i < skb->len; i++)
|
|
printk(" %2.2x", skb->data[i]);
|
|
printk(".\n");
|
|
}
|
|
data->txring[tx].misc = misc | TSI108_TX_OWN;
|
|
|
|
data->txhead = (data->txhead + 1) % TSI108_TXRING_LEN;
|
|
data->txfree--;
|
|
}
|
|
|
|
tsi108_complete_tx(dev);
|
|
|
|
/* This must be done after the check for completed tx descriptors,
|
|
* so that the tail pointer is correct.
|
|
*/
|
|
|
|
if (!(TSI_READ(TSI108_EC_TXSTAT) & TSI108_EC_TXSTAT_QUEUE0))
|
|
tsi108_restart_tx(data);
|
|
|
|
spin_unlock_irq(&data->txlock);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static int tsi108_complete_rx(struct net_device *dev, int budget)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
int done = 0;
|
|
|
|
while (data->rxfree && done != budget) {
|
|
int rx = data->rxtail;
|
|
struct sk_buff *skb;
|
|
|
|
if (data->rxring[rx].misc & TSI108_RX_OWN)
|
|
break;
|
|
|
|
skb = data->rxskbs[rx];
|
|
data->rxtail = (data->rxtail + 1) % TSI108_RXRING_LEN;
|
|
data->rxfree--;
|
|
done++;
|
|
|
|
if (data->rxring[rx].misc & TSI108_RX_BAD) {
|
|
spin_lock_irq(&data->misclock);
|
|
|
|
if (data->rxring[rx].misc & TSI108_RX_CRC)
|
|
data->stats.rx_crc_errors++;
|
|
if (data->rxring[rx].misc & TSI108_RX_OVER)
|
|
data->stats.rx_fifo_errors++;
|
|
|
|
spin_unlock_irq(&data->misclock);
|
|
|
|
dev_kfree_skb_any(skb);
|
|
continue;
|
|
}
|
|
if (netif_msg_pktdata(data)) {
|
|
int i;
|
|
printk("%s: Rx Frame contents (%d)\n",
|
|
dev->name, data->rxring[rx].len);
|
|
for (i = 0; i < data->rxring[rx].len; i++)
|
|
printk(" %2.2x", skb->data[i]);
|
|
printk(".\n");
|
|
}
|
|
|
|
skb_put(skb, data->rxring[rx].len);
|
|
skb->protocol = eth_type_trans(skb, dev);
|
|
netif_receive_skb(skb);
|
|
}
|
|
|
|
return done;
|
|
}
|
|
|
|
static int tsi108_refill_rx(struct net_device *dev, int budget)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
int done = 0;
|
|
|
|
while (data->rxfree != TSI108_RXRING_LEN && done != budget) {
|
|
int rx = data->rxhead;
|
|
struct sk_buff *skb;
|
|
|
|
skb = netdev_alloc_skb_ip_align(dev, TSI108_RXBUF_SIZE);
|
|
data->rxskbs[rx] = skb;
|
|
if (!skb)
|
|
break;
|
|
|
|
data->rxring[rx].buf0 = dma_map_single(NULL, skb->data,
|
|
TSI108_RX_SKB_SIZE,
|
|
DMA_FROM_DEVICE);
|
|
|
|
/* Sometimes the hardware sets blen to zero after packet
|
|
* reception, even though the manual says that it's only ever
|
|
* modified by the driver.
|
|
*/
|
|
|
|
data->rxring[rx].blen = TSI108_RX_SKB_SIZE;
|
|
data->rxring[rx].misc = TSI108_RX_OWN | TSI108_RX_INT;
|
|
|
|
data->rxhead = (data->rxhead + 1) % TSI108_RXRING_LEN;
|
|
data->rxfree++;
|
|
done++;
|
|
}
|
|
|
|
if (done != 0 && !(TSI_READ(TSI108_EC_RXSTAT) &
|
|
TSI108_EC_RXSTAT_QUEUE0))
|
|
tsi108_restart_rx(data, dev);
|
|
|
|
return done;
|
|
}
|
|
|
|
static int tsi108_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct tsi108_prv_data *data = container_of(napi, struct tsi108_prv_data, napi);
|
|
struct net_device *dev = data->dev;
|
|
u32 estat = TSI_READ(TSI108_EC_RXESTAT);
|
|
u32 intstat = TSI_READ(TSI108_EC_INTSTAT);
|
|
int num_received = 0, num_filled = 0;
|
|
|
|
intstat &= TSI108_INT_RXQUEUE0 | TSI108_INT_RXTHRESH |
|
|
TSI108_INT_RXOVERRUN | TSI108_INT_RXERROR | TSI108_INT_RXWAIT;
|
|
|
|
TSI_WRITE(TSI108_EC_RXESTAT, estat);
|
|
TSI_WRITE(TSI108_EC_INTSTAT, intstat);
|
|
|
|
if (data->rxpending || (estat & TSI108_EC_RXESTAT_Q0_DESCINT))
|
|
num_received = tsi108_complete_rx(dev, budget);
|
|
|
|
/* This should normally fill no more slots than the number of
|
|
* packets received in tsi108_complete_rx(). The exception
|
|
* is when we previously ran out of memory for RX SKBs. In that
|
|
* case, it's helpful to obey the budget, not only so that the
|
|
* CPU isn't hogged, but so that memory (which may still be low)
|
|
* is not hogged by one device.
|
|
*
|
|
* A work unit is considered to be two SKBs to allow us to catch
|
|
* up when the ring has shrunk due to out-of-memory but we're
|
|
* still removing the full budget's worth of packets each time.
|
|
*/
|
|
|
|
if (data->rxfree < TSI108_RXRING_LEN)
|
|
num_filled = tsi108_refill_rx(dev, budget * 2);
|
|
|
|
if (intstat & TSI108_INT_RXERROR) {
|
|
u32 err = TSI_READ(TSI108_EC_RXERR);
|
|
TSI_WRITE(TSI108_EC_RXERR, err);
|
|
|
|
if (err) {
|
|
if (net_ratelimit())
|
|
printk(KERN_DEBUG "%s: RX error %x\n",
|
|
dev->name, err);
|
|
|
|
if (!(TSI_READ(TSI108_EC_RXSTAT) &
|
|
TSI108_EC_RXSTAT_QUEUE0))
|
|
tsi108_restart_rx(data, dev);
|
|
}
|
|
}
|
|
|
|
if (intstat & TSI108_INT_RXOVERRUN) {
|
|
spin_lock_irq(&data->misclock);
|
|
data->stats.rx_fifo_errors++;
|
|
spin_unlock_irq(&data->misclock);
|
|
}
|
|
|
|
if (num_received < budget) {
|
|
data->rxpending = 0;
|
|
napi_complete(napi);
|
|
|
|
TSI_WRITE(TSI108_EC_INTMASK,
|
|
TSI_READ(TSI108_EC_INTMASK)
|
|
& ~(TSI108_INT_RXQUEUE0
|
|
| TSI108_INT_RXTHRESH |
|
|
TSI108_INT_RXOVERRUN |
|
|
TSI108_INT_RXERROR |
|
|
TSI108_INT_RXWAIT));
|
|
} else {
|
|
data->rxpending = 1;
|
|
}
|
|
|
|
return num_received;
|
|
}
|
|
|
|
static void tsi108_rx_int(struct net_device *dev)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
|
|
/* A race could cause dev to already be scheduled, so it's not an
|
|
* error if that happens (and interrupts shouldn't be re-masked,
|
|
* because that can cause harmful races, if poll has already
|
|
* unmasked them but not cleared LINK_STATE_SCHED).
|
|
*
|
|
* This can happen if this code races with tsi108_poll(), which masks
|
|
* the interrupts after tsi108_irq_one() read the mask, but before
|
|
* napi_schedule is called. It could also happen due to calls
|
|
* from tsi108_check_rxring().
|
|
*/
|
|
|
|
if (napi_schedule_prep(&data->napi)) {
|
|
/* Mask, rather than ack, the receive interrupts. The ack
|
|
* will happen in tsi108_poll().
|
|
*/
|
|
|
|
TSI_WRITE(TSI108_EC_INTMASK,
|
|
TSI_READ(TSI108_EC_INTMASK) |
|
|
TSI108_INT_RXQUEUE0
|
|
| TSI108_INT_RXTHRESH |
|
|
TSI108_INT_RXOVERRUN | TSI108_INT_RXERROR |
|
|
TSI108_INT_RXWAIT);
|
|
__napi_schedule(&data->napi);
|
|
} else {
|
|
if (!netif_running(dev)) {
|
|
/* This can happen if an interrupt occurs while the
|
|
* interface is being brought down, as the START
|
|
* bit is cleared before the stop function is called.
|
|
*
|
|
* In this case, the interrupts must be masked, or
|
|
* they will continue indefinitely.
|
|
*
|
|
* There's a race here if the interface is brought down
|
|
* and then up in rapid succession, as the device could
|
|
* be made running after the above check and before
|
|
* the masking below. This will only happen if the IRQ
|
|
* thread has a lower priority than the task brining
|
|
* up the interface. Fixing this race would likely
|
|
* require changes in generic code.
|
|
*/
|
|
|
|
TSI_WRITE(TSI108_EC_INTMASK,
|
|
TSI_READ
|
|
(TSI108_EC_INTMASK) |
|
|
TSI108_INT_RXQUEUE0 |
|
|
TSI108_INT_RXTHRESH |
|
|
TSI108_INT_RXOVERRUN |
|
|
TSI108_INT_RXERROR |
|
|
TSI108_INT_RXWAIT);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* If the RX ring has run out of memory, try periodically
|
|
* to allocate some more, as otherwise poll would never
|
|
* get called (apart from the initial end-of-queue condition).
|
|
*
|
|
* This is called once per second (by default) from the thread.
|
|
*/
|
|
|
|
static void tsi108_check_rxring(struct net_device *dev)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
|
|
/* A poll is scheduled, as opposed to caling tsi108_refill_rx
|
|
* directly, so as to keep the receive path single-threaded
|
|
* (and thus not needing a lock).
|
|
*/
|
|
|
|
if (netif_running(dev) && data->rxfree < TSI108_RXRING_LEN / 4)
|
|
tsi108_rx_int(dev);
|
|
}
|
|
|
|
static void tsi108_tx_int(struct net_device *dev)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
u32 estat = TSI_READ(TSI108_EC_TXESTAT);
|
|
|
|
TSI_WRITE(TSI108_EC_TXESTAT, estat);
|
|
TSI_WRITE(TSI108_EC_INTSTAT, TSI108_INT_TXQUEUE0 |
|
|
TSI108_INT_TXIDLE | TSI108_INT_TXERROR);
|
|
if (estat & TSI108_EC_TXESTAT_Q0_ERR) {
|
|
u32 err = TSI_READ(TSI108_EC_TXERR);
|
|
TSI_WRITE(TSI108_EC_TXERR, err);
|
|
|
|
if (err && net_ratelimit())
|
|
printk(KERN_ERR "%s: TX error %x\n", dev->name, err);
|
|
}
|
|
|
|
if (estat & (TSI108_EC_TXESTAT_Q0_DESCINT | TSI108_EC_TXESTAT_Q0_EOQ)) {
|
|
spin_lock(&data->txlock);
|
|
tsi108_complete_tx(dev);
|
|
spin_unlock(&data->txlock);
|
|
}
|
|
}
|
|
|
|
|
|
static irqreturn_t tsi108_irq(int irq, void *dev_id)
|
|
{
|
|
struct net_device *dev = dev_id;
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
u32 stat = TSI_READ(TSI108_EC_INTSTAT);
|
|
|
|
if (!(stat & TSI108_INT_ANY))
|
|
return IRQ_NONE; /* Not our interrupt */
|
|
|
|
stat &= ~TSI_READ(TSI108_EC_INTMASK);
|
|
|
|
if (stat & (TSI108_INT_TXQUEUE0 | TSI108_INT_TXIDLE |
|
|
TSI108_INT_TXERROR))
|
|
tsi108_tx_int(dev);
|
|
if (stat & (TSI108_INT_RXQUEUE0 | TSI108_INT_RXTHRESH |
|
|
TSI108_INT_RXWAIT | TSI108_INT_RXOVERRUN |
|
|
TSI108_INT_RXERROR))
|
|
tsi108_rx_int(dev);
|
|
|
|
if (stat & TSI108_INT_SFN) {
|
|
if (net_ratelimit())
|
|
printk(KERN_DEBUG "%s: SFN error\n", dev->name);
|
|
TSI_WRITE(TSI108_EC_INTSTAT, TSI108_INT_SFN);
|
|
}
|
|
|
|
if (stat & TSI108_INT_STATCARRY) {
|
|
tsi108_stat_carry(dev);
|
|
TSI_WRITE(TSI108_EC_INTSTAT, TSI108_INT_STATCARRY);
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void tsi108_stop_ethernet(struct net_device *dev)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
int i = 1000;
|
|
/* Disable all TX and RX queues ... */
|
|
TSI_WRITE(TSI108_EC_TXCTRL, 0);
|
|
TSI_WRITE(TSI108_EC_RXCTRL, 0);
|
|
|
|
/* ...and wait for them to become idle */
|
|
while(i--) {
|
|
if(!(TSI_READ(TSI108_EC_TXSTAT) & TSI108_EC_TXSTAT_ACTIVE))
|
|
break;
|
|
udelay(10);
|
|
}
|
|
i = 1000;
|
|
while(i--){
|
|
if(!(TSI_READ(TSI108_EC_RXSTAT) & TSI108_EC_RXSTAT_ACTIVE))
|
|
return;
|
|
udelay(10);
|
|
}
|
|
printk(KERN_ERR "%s function time out\n", __func__);
|
|
}
|
|
|
|
static void tsi108_reset_ether(struct tsi108_prv_data * data)
|
|
{
|
|
TSI_WRITE(TSI108_MAC_CFG1, TSI108_MAC_CFG1_SOFTRST);
|
|
udelay(100);
|
|
TSI_WRITE(TSI108_MAC_CFG1, 0);
|
|
|
|
TSI_WRITE(TSI108_EC_PORTCTRL, TSI108_EC_PORTCTRL_STATRST);
|
|
udelay(100);
|
|
TSI_WRITE(TSI108_EC_PORTCTRL,
|
|
TSI_READ(TSI108_EC_PORTCTRL) &
|
|
~TSI108_EC_PORTCTRL_STATRST);
|
|
|
|
TSI_WRITE(TSI108_EC_TXCFG, TSI108_EC_TXCFG_RST);
|
|
udelay(100);
|
|
TSI_WRITE(TSI108_EC_TXCFG,
|
|
TSI_READ(TSI108_EC_TXCFG) &
|
|
~TSI108_EC_TXCFG_RST);
|
|
|
|
TSI_WRITE(TSI108_EC_RXCFG, TSI108_EC_RXCFG_RST);
|
|
udelay(100);
|
|
TSI_WRITE(TSI108_EC_RXCFG,
|
|
TSI_READ(TSI108_EC_RXCFG) &
|
|
~TSI108_EC_RXCFG_RST);
|
|
|
|
TSI_WRITE(TSI108_MAC_MII_MGMT_CFG,
|
|
TSI_READ(TSI108_MAC_MII_MGMT_CFG) |
|
|
TSI108_MAC_MII_MGMT_RST);
|
|
udelay(100);
|
|
TSI_WRITE(TSI108_MAC_MII_MGMT_CFG,
|
|
(TSI_READ(TSI108_MAC_MII_MGMT_CFG) &
|
|
~(TSI108_MAC_MII_MGMT_RST |
|
|
TSI108_MAC_MII_MGMT_CLK)) | 0x07);
|
|
}
|
|
|
|
static int tsi108_get_mac(struct net_device *dev)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
u32 word1 = TSI_READ(TSI108_MAC_ADDR1);
|
|
u32 word2 = TSI_READ(TSI108_MAC_ADDR2);
|
|
|
|
/* Note that the octets are reversed from what the manual says,
|
|
* producing an even weirder ordering...
|
|
*/
|
|
if (word2 == 0 && word1 == 0) {
|
|
dev->dev_addr[0] = 0x00;
|
|
dev->dev_addr[1] = 0x06;
|
|
dev->dev_addr[2] = 0xd2;
|
|
dev->dev_addr[3] = 0x00;
|
|
dev->dev_addr[4] = 0x00;
|
|
if (0x8 == data->phy)
|
|
dev->dev_addr[5] = 0x01;
|
|
else
|
|
dev->dev_addr[5] = 0x02;
|
|
|
|
word2 = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 24);
|
|
|
|
word1 = (dev->dev_addr[2] << 0) | (dev->dev_addr[3] << 8) |
|
|
(dev->dev_addr[4] << 16) | (dev->dev_addr[5] << 24);
|
|
|
|
TSI_WRITE(TSI108_MAC_ADDR1, word1);
|
|
TSI_WRITE(TSI108_MAC_ADDR2, word2);
|
|
} else {
|
|
dev->dev_addr[0] = (word2 >> 16) & 0xff;
|
|
dev->dev_addr[1] = (word2 >> 24) & 0xff;
|
|
dev->dev_addr[2] = (word1 >> 0) & 0xff;
|
|
dev->dev_addr[3] = (word1 >> 8) & 0xff;
|
|
dev->dev_addr[4] = (word1 >> 16) & 0xff;
|
|
dev->dev_addr[5] = (word1 >> 24) & 0xff;
|
|
}
|
|
|
|
if (!is_valid_ether_addr(dev->dev_addr)) {
|
|
printk(KERN_ERR
|
|
"%s: Invalid MAC address. word1: %08x, word2: %08x\n",
|
|
dev->name, word1, word2);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tsi108_set_mac(struct net_device *dev, void *addr)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
u32 word1, word2;
|
|
int i;
|
|
|
|
if (!is_valid_ether_addr(addr))
|
|
return -EINVAL;
|
|
|
|
for (i = 0; i < 6; i++)
|
|
/* +2 is for the offset of the HW addr type */
|
|
dev->dev_addr[i] = ((unsigned char *)addr)[i + 2];
|
|
|
|
word2 = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 24);
|
|
|
|
word1 = (dev->dev_addr[2] << 0) | (dev->dev_addr[3] << 8) |
|
|
(dev->dev_addr[4] << 16) | (dev->dev_addr[5] << 24);
|
|
|
|
spin_lock_irq(&data->misclock);
|
|
TSI_WRITE(TSI108_MAC_ADDR1, word1);
|
|
TSI_WRITE(TSI108_MAC_ADDR2, word2);
|
|
spin_lock(&data->txlock);
|
|
|
|
if (data->txfree && data->link_up)
|
|
netif_wake_queue(dev);
|
|
|
|
spin_unlock(&data->txlock);
|
|
spin_unlock_irq(&data->misclock);
|
|
return 0;
|
|
}
|
|
|
|
/* Protected by dev->xmit_lock. */
|
|
static void tsi108_set_rx_mode(struct net_device *dev)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
u32 rxcfg = TSI_READ(TSI108_EC_RXCFG);
|
|
|
|
if (dev->flags & IFF_PROMISC) {
|
|
rxcfg &= ~(TSI108_EC_RXCFG_UC_HASH | TSI108_EC_RXCFG_MC_HASH);
|
|
rxcfg |= TSI108_EC_RXCFG_UFE | TSI108_EC_RXCFG_MFE;
|
|
goto out;
|
|
}
|
|
|
|
rxcfg &= ~(TSI108_EC_RXCFG_UFE | TSI108_EC_RXCFG_MFE);
|
|
|
|
if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) {
|
|
int i;
|
|
struct netdev_hw_addr *ha;
|
|
rxcfg |= TSI108_EC_RXCFG_MFE | TSI108_EC_RXCFG_MC_HASH;
|
|
|
|
memset(data->mc_hash, 0, sizeof(data->mc_hash));
|
|
|
|
netdev_for_each_mc_addr(ha, dev) {
|
|
u32 hash, crc;
|
|
|
|
crc = ether_crc(6, ha->addr);
|
|
hash = crc >> 23;
|
|
__set_bit(hash, &data->mc_hash[0]);
|
|
}
|
|
|
|
TSI_WRITE(TSI108_EC_HASHADDR,
|
|
TSI108_EC_HASHADDR_AUTOINC |
|
|
TSI108_EC_HASHADDR_MCAST);
|
|
|
|
for (i = 0; i < 16; i++) {
|
|
/* The manual says that the hardware may drop
|
|
* back-to-back writes to the data register.
|
|
*/
|
|
udelay(1);
|
|
TSI_WRITE(TSI108_EC_HASHDATA,
|
|
data->mc_hash[i]);
|
|
}
|
|
}
|
|
|
|
out:
|
|
TSI_WRITE(TSI108_EC_RXCFG, rxcfg);
|
|
}
|
|
|
|
static void tsi108_init_phy(struct net_device *dev)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
u32 i = 0;
|
|
u16 phyval = 0;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&phy_lock, flags);
|
|
|
|
tsi108_write_mii(data, MII_BMCR, BMCR_RESET);
|
|
while (--i) {
|
|
if(!(tsi108_read_mii(data, MII_BMCR) & BMCR_RESET))
|
|
break;
|
|
udelay(10);
|
|
}
|
|
if (i == 0)
|
|
printk(KERN_ERR "%s function time out\n", __func__);
|
|
|
|
if (data->phy_type == TSI108_PHY_BCM54XX) {
|
|
tsi108_write_mii(data, 0x09, 0x0300);
|
|
tsi108_write_mii(data, 0x10, 0x1020);
|
|
tsi108_write_mii(data, 0x1c, 0x8c00);
|
|
}
|
|
|
|
tsi108_write_mii(data,
|
|
MII_BMCR,
|
|
BMCR_ANENABLE | BMCR_ANRESTART);
|
|
while (tsi108_read_mii(data, MII_BMCR) & BMCR_ANRESTART)
|
|
cpu_relax();
|
|
|
|
/* Set G/MII mode and receive clock select in TBI control #2. The
|
|
* second port won't work if this isn't done, even though we don't
|
|
* use TBI mode.
|
|
*/
|
|
|
|
tsi108_write_tbi(data, 0x11, 0x30);
|
|
|
|
/* FIXME: It seems to take more than 2 back-to-back reads to the
|
|
* PHY_STAT register before the link up status bit is set.
|
|
*/
|
|
|
|
data->link_up = 0;
|
|
|
|
while (!((phyval = tsi108_read_mii(data, MII_BMSR)) &
|
|
BMSR_LSTATUS)) {
|
|
if (i++ > (MII_READ_DELAY / 10)) {
|
|
break;
|
|
}
|
|
spin_unlock_irqrestore(&phy_lock, flags);
|
|
msleep(10);
|
|
spin_lock_irqsave(&phy_lock, flags);
|
|
}
|
|
|
|
data->mii_if.supports_gmii = mii_check_gmii_support(&data->mii_if);
|
|
printk(KERN_DEBUG "PHY_STAT reg contains %08x\n", phyval);
|
|
data->phy_ok = 1;
|
|
data->init_media = 1;
|
|
spin_unlock_irqrestore(&phy_lock, flags);
|
|
}
|
|
|
|
static void tsi108_kill_phy(struct net_device *dev)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&phy_lock, flags);
|
|
tsi108_write_mii(data, MII_BMCR, BMCR_PDOWN);
|
|
data->phy_ok = 0;
|
|
spin_unlock_irqrestore(&phy_lock, flags);
|
|
}
|
|
|
|
static int tsi108_open(struct net_device *dev)
|
|
{
|
|
int i;
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
unsigned int rxring_size = TSI108_RXRING_LEN * sizeof(rx_desc);
|
|
unsigned int txring_size = TSI108_TXRING_LEN * sizeof(tx_desc);
|
|
|
|
i = request_irq(data->irq_num, tsi108_irq, 0, dev->name, dev);
|
|
if (i != 0) {
|
|
printk(KERN_ERR "tsi108_eth%d: Could not allocate IRQ%d.\n",
|
|
data->id, data->irq_num);
|
|
return i;
|
|
} else {
|
|
dev->irq = data->irq_num;
|
|
printk(KERN_NOTICE
|
|
"tsi108_open : Port %d Assigned IRQ %d to %s\n",
|
|
data->id, dev->irq, dev->name);
|
|
}
|
|
|
|
data->rxring = dma_alloc_coherent(NULL, rxring_size,
|
|
&data->rxdma, GFP_KERNEL);
|
|
|
|
if (!data->rxring) {
|
|
printk(KERN_DEBUG
|
|
"TSI108_ETH: failed to allocate memory for rxring!\n");
|
|
return -ENOMEM;
|
|
} else {
|
|
memset(data->rxring, 0, rxring_size);
|
|
}
|
|
|
|
data->txring = dma_alloc_coherent(NULL, txring_size,
|
|
&data->txdma, GFP_KERNEL);
|
|
|
|
if (!data->txring) {
|
|
printk(KERN_DEBUG
|
|
"TSI108_ETH: failed to allocate memory for txring!\n");
|
|
pci_free_consistent(0, rxring_size, data->rxring, data->rxdma);
|
|
return -ENOMEM;
|
|
} else {
|
|
memset(data->txring, 0, txring_size);
|
|
}
|
|
|
|
for (i = 0; i < TSI108_RXRING_LEN; i++) {
|
|
data->rxring[i].next0 = data->rxdma + (i + 1) * sizeof(rx_desc);
|
|
data->rxring[i].blen = TSI108_RXBUF_SIZE;
|
|
data->rxring[i].vlan = 0;
|
|
}
|
|
|
|
data->rxring[TSI108_RXRING_LEN - 1].next0 = data->rxdma;
|
|
|
|
data->rxtail = 0;
|
|
data->rxhead = 0;
|
|
|
|
for (i = 0; i < TSI108_RXRING_LEN; i++) {
|
|
struct sk_buff *skb;
|
|
|
|
skb = netdev_alloc_skb_ip_align(dev, TSI108_RXBUF_SIZE);
|
|
if (!skb) {
|
|
/* Bah. No memory for now, but maybe we'll get
|
|
* some more later.
|
|
* For now, we'll live with the smaller ring.
|
|
*/
|
|
printk(KERN_WARNING
|
|
"%s: Could only allocate %d receive skb(s).\n",
|
|
dev->name, i);
|
|
data->rxhead = i;
|
|
break;
|
|
}
|
|
|
|
data->rxskbs[i] = skb;
|
|
data->rxskbs[i] = skb;
|
|
data->rxring[i].buf0 = virt_to_phys(data->rxskbs[i]->data);
|
|
data->rxring[i].misc = TSI108_RX_OWN | TSI108_RX_INT;
|
|
}
|
|
|
|
data->rxfree = i;
|
|
TSI_WRITE(TSI108_EC_RXQ_PTRLOW, data->rxdma);
|
|
|
|
for (i = 0; i < TSI108_TXRING_LEN; i++) {
|
|
data->txring[i].next0 = data->txdma + (i + 1) * sizeof(tx_desc);
|
|
data->txring[i].misc = 0;
|
|
}
|
|
|
|
data->txring[TSI108_TXRING_LEN - 1].next0 = data->txdma;
|
|
data->txtail = 0;
|
|
data->txhead = 0;
|
|
data->txfree = TSI108_TXRING_LEN;
|
|
TSI_WRITE(TSI108_EC_TXQ_PTRLOW, data->txdma);
|
|
tsi108_init_phy(dev);
|
|
|
|
napi_enable(&data->napi);
|
|
|
|
setup_timer(&data->timer, tsi108_timed_checker, (unsigned long)dev);
|
|
mod_timer(&data->timer, jiffies + 1);
|
|
|
|
tsi108_restart_rx(data, dev);
|
|
|
|
TSI_WRITE(TSI108_EC_INTSTAT, ~0);
|
|
|
|
TSI_WRITE(TSI108_EC_INTMASK,
|
|
~(TSI108_INT_TXQUEUE0 | TSI108_INT_RXERROR |
|
|
TSI108_INT_RXTHRESH | TSI108_INT_RXQUEUE0 |
|
|
TSI108_INT_RXOVERRUN | TSI108_INT_RXWAIT |
|
|
TSI108_INT_SFN | TSI108_INT_STATCARRY));
|
|
|
|
TSI_WRITE(TSI108_MAC_CFG1,
|
|
TSI108_MAC_CFG1_RXEN | TSI108_MAC_CFG1_TXEN);
|
|
netif_start_queue(dev);
|
|
return 0;
|
|
}
|
|
|
|
static int tsi108_close(struct net_device *dev)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
|
|
netif_stop_queue(dev);
|
|
napi_disable(&data->napi);
|
|
|
|
del_timer_sync(&data->timer);
|
|
|
|
tsi108_stop_ethernet(dev);
|
|
tsi108_kill_phy(dev);
|
|
TSI_WRITE(TSI108_EC_INTMASK, ~0);
|
|
TSI_WRITE(TSI108_MAC_CFG1, 0);
|
|
|
|
/* Check for any pending TX packets, and drop them. */
|
|
|
|
while (!data->txfree || data->txhead != data->txtail) {
|
|
int tx = data->txtail;
|
|
struct sk_buff *skb;
|
|
skb = data->txskbs[tx];
|
|
data->txtail = (data->txtail + 1) % TSI108_TXRING_LEN;
|
|
data->txfree++;
|
|
dev_kfree_skb(skb);
|
|
}
|
|
|
|
free_irq(data->irq_num, dev);
|
|
|
|
/* Discard the RX ring. */
|
|
|
|
while (data->rxfree) {
|
|
int rx = data->rxtail;
|
|
struct sk_buff *skb;
|
|
|
|
skb = data->rxskbs[rx];
|
|
data->rxtail = (data->rxtail + 1) % TSI108_RXRING_LEN;
|
|
data->rxfree--;
|
|
dev_kfree_skb(skb);
|
|
}
|
|
|
|
dma_free_coherent(0,
|
|
TSI108_RXRING_LEN * sizeof(rx_desc),
|
|
data->rxring, data->rxdma);
|
|
dma_free_coherent(0,
|
|
TSI108_TXRING_LEN * sizeof(tx_desc),
|
|
data->txring, data->txdma);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tsi108_init_mac(struct net_device *dev)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
|
|
TSI_WRITE(TSI108_MAC_CFG2, TSI108_MAC_CFG2_DFLT_PREAMBLE |
|
|
TSI108_MAC_CFG2_PADCRC);
|
|
|
|
TSI_WRITE(TSI108_EC_TXTHRESH,
|
|
(192 << TSI108_EC_TXTHRESH_STARTFILL) |
|
|
(192 << TSI108_EC_TXTHRESH_STOPFILL));
|
|
|
|
TSI_WRITE(TSI108_STAT_CARRYMASK1,
|
|
~(TSI108_STAT_CARRY1_RXBYTES |
|
|
TSI108_STAT_CARRY1_RXPKTS |
|
|
TSI108_STAT_CARRY1_RXFCS |
|
|
TSI108_STAT_CARRY1_RXMCAST |
|
|
TSI108_STAT_CARRY1_RXALIGN |
|
|
TSI108_STAT_CARRY1_RXLENGTH |
|
|
TSI108_STAT_CARRY1_RXRUNT |
|
|
TSI108_STAT_CARRY1_RXJUMBO |
|
|
TSI108_STAT_CARRY1_RXFRAG |
|
|
TSI108_STAT_CARRY1_RXJABBER |
|
|
TSI108_STAT_CARRY1_RXDROP));
|
|
|
|
TSI_WRITE(TSI108_STAT_CARRYMASK2,
|
|
~(TSI108_STAT_CARRY2_TXBYTES |
|
|
TSI108_STAT_CARRY2_TXPKTS |
|
|
TSI108_STAT_CARRY2_TXEXDEF |
|
|
TSI108_STAT_CARRY2_TXEXCOL |
|
|
TSI108_STAT_CARRY2_TXTCOL |
|
|
TSI108_STAT_CARRY2_TXPAUSE));
|
|
|
|
TSI_WRITE(TSI108_EC_PORTCTRL, TSI108_EC_PORTCTRL_STATEN);
|
|
TSI_WRITE(TSI108_MAC_CFG1, 0);
|
|
|
|
TSI_WRITE(TSI108_EC_RXCFG,
|
|
TSI108_EC_RXCFG_SE | TSI108_EC_RXCFG_BFE);
|
|
|
|
TSI_WRITE(TSI108_EC_TXQ_CFG, TSI108_EC_TXQ_CFG_DESC_INT |
|
|
TSI108_EC_TXQ_CFG_EOQ_OWN_INT |
|
|
TSI108_EC_TXQ_CFG_WSWP | (TSI108_PBM_PORT <<
|
|
TSI108_EC_TXQ_CFG_SFNPORT));
|
|
|
|
TSI_WRITE(TSI108_EC_RXQ_CFG, TSI108_EC_RXQ_CFG_DESC_INT |
|
|
TSI108_EC_RXQ_CFG_EOQ_OWN_INT |
|
|
TSI108_EC_RXQ_CFG_WSWP | (TSI108_PBM_PORT <<
|
|
TSI108_EC_RXQ_CFG_SFNPORT));
|
|
|
|
TSI_WRITE(TSI108_EC_TXQ_BUFCFG,
|
|
TSI108_EC_TXQ_BUFCFG_BURST256 |
|
|
TSI108_EC_TXQ_BUFCFG_BSWP | (TSI108_PBM_PORT <<
|
|
TSI108_EC_TXQ_BUFCFG_SFNPORT));
|
|
|
|
TSI_WRITE(TSI108_EC_RXQ_BUFCFG,
|
|
TSI108_EC_RXQ_BUFCFG_BURST256 |
|
|
TSI108_EC_RXQ_BUFCFG_BSWP | (TSI108_PBM_PORT <<
|
|
TSI108_EC_RXQ_BUFCFG_SFNPORT));
|
|
|
|
TSI_WRITE(TSI108_EC_INTMASK, ~0);
|
|
}
|
|
|
|
static int tsi108_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
unsigned long flags;
|
|
int rc;
|
|
|
|
spin_lock_irqsave(&data->txlock, flags);
|
|
rc = mii_ethtool_gset(&data->mii_if, cmd);
|
|
spin_unlock_irqrestore(&data->txlock, flags);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int tsi108_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
unsigned long flags;
|
|
int rc;
|
|
|
|
spin_lock_irqsave(&data->txlock, flags);
|
|
rc = mii_ethtool_sset(&data->mii_if, cmd);
|
|
spin_unlock_irqrestore(&data->txlock, flags);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int tsi108_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
|
|
{
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
if (!netif_running(dev))
|
|
return -EINVAL;
|
|
return generic_mii_ioctl(&data->mii_if, if_mii(rq), cmd, NULL);
|
|
}
|
|
|
|
static const struct ethtool_ops tsi108_ethtool_ops = {
|
|
.get_link = ethtool_op_get_link,
|
|
.get_settings = tsi108_get_settings,
|
|
.set_settings = tsi108_set_settings,
|
|
};
|
|
|
|
static const struct net_device_ops tsi108_netdev_ops = {
|
|
.ndo_open = tsi108_open,
|
|
.ndo_stop = tsi108_close,
|
|
.ndo_start_xmit = tsi108_send_packet,
|
|
.ndo_set_multicast_list = tsi108_set_rx_mode,
|
|
.ndo_get_stats = tsi108_get_stats,
|
|
.ndo_do_ioctl = tsi108_do_ioctl,
|
|
.ndo_set_mac_address = tsi108_set_mac,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_change_mtu = eth_change_mtu,
|
|
};
|
|
|
|
static int
|
|
tsi108_init_one(struct platform_device *pdev)
|
|
{
|
|
struct net_device *dev = NULL;
|
|
struct tsi108_prv_data *data = NULL;
|
|
hw_info *einfo;
|
|
int err = 0;
|
|
|
|
einfo = pdev->dev.platform_data;
|
|
|
|
if (NULL == einfo) {
|
|
printk(KERN_ERR "tsi-eth %d: Missing additional data!\n",
|
|
pdev->id);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Create an ethernet device instance */
|
|
|
|
dev = alloc_etherdev(sizeof(struct tsi108_prv_data));
|
|
if (!dev) {
|
|
printk("tsi108_eth: Could not allocate a device structure\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
printk("tsi108_eth%d: probe...\n", pdev->id);
|
|
data = netdev_priv(dev);
|
|
data->dev = dev;
|
|
|
|
pr_debug("tsi108_eth%d:regs:phyresgs:phy:irq_num=0x%x:0x%x:0x%x:0x%x\n",
|
|
pdev->id, einfo->regs, einfo->phyregs,
|
|
einfo->phy, einfo->irq_num);
|
|
|
|
data->regs = ioremap(einfo->regs, 0x400);
|
|
if (NULL == data->regs) {
|
|
err = -ENOMEM;
|
|
goto regs_fail;
|
|
}
|
|
|
|
data->phyregs = ioremap(einfo->phyregs, 0x400);
|
|
if (NULL == data->phyregs) {
|
|
err = -ENOMEM;
|
|
goto regs_fail;
|
|
}
|
|
/* MII setup */
|
|
data->mii_if.dev = dev;
|
|
data->mii_if.mdio_read = tsi108_mdio_read;
|
|
data->mii_if.mdio_write = tsi108_mdio_write;
|
|
data->mii_if.phy_id = einfo->phy;
|
|
data->mii_if.phy_id_mask = 0x1f;
|
|
data->mii_if.reg_num_mask = 0x1f;
|
|
|
|
data->phy = einfo->phy;
|
|
data->phy_type = einfo->phy_type;
|
|
data->irq_num = einfo->irq_num;
|
|
data->id = pdev->id;
|
|
netif_napi_add(dev, &data->napi, tsi108_poll, 64);
|
|
dev->netdev_ops = &tsi108_netdev_ops;
|
|
dev->ethtool_ops = &tsi108_ethtool_ops;
|
|
|
|
/* Apparently, the Linux networking code won't use scatter-gather
|
|
* if the hardware doesn't do checksums. However, it's faster
|
|
* to checksum in place and use SG, as (among other reasons)
|
|
* the cache won't be dirtied (which then has to be flushed
|
|
* before DMA). The checksumming is done by the driver (via
|
|
* a new function skb_csum_dev() in net/core/skbuff.c).
|
|
*/
|
|
|
|
dev->features = NETIF_F_HIGHDMA;
|
|
|
|
spin_lock_init(&data->txlock);
|
|
spin_lock_init(&data->misclock);
|
|
|
|
tsi108_reset_ether(data);
|
|
tsi108_kill_phy(dev);
|
|
|
|
if ((err = tsi108_get_mac(dev)) != 0) {
|
|
printk(KERN_ERR "%s: Invalid MAC address. Please correct.\n",
|
|
dev->name);
|
|
goto register_fail;
|
|
}
|
|
|
|
tsi108_init_mac(dev);
|
|
err = register_netdev(dev);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: Cannot register net device, aborting.\n",
|
|
dev->name);
|
|
goto register_fail;
|
|
}
|
|
|
|
platform_set_drvdata(pdev, dev);
|
|
printk(KERN_INFO "%s: Tsi108 Gigabit Ethernet, MAC: %pM\n",
|
|
dev->name, dev->dev_addr);
|
|
#ifdef DEBUG
|
|
data->msg_enable = DEBUG;
|
|
dump_eth_one(dev);
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
register_fail:
|
|
iounmap(data->regs);
|
|
iounmap(data->phyregs);
|
|
|
|
regs_fail:
|
|
free_netdev(dev);
|
|
return err;
|
|
}
|
|
|
|
/* There's no way to either get interrupts from the PHY when
|
|
* something changes, or to have the Tsi108 automatically communicate
|
|
* with the PHY to reconfigure itself.
|
|
*
|
|
* Thus, we have to do it using a timer.
|
|
*/
|
|
|
|
static void tsi108_timed_checker(unsigned long dev_ptr)
|
|
{
|
|
struct net_device *dev = (struct net_device *)dev_ptr;
|
|
struct tsi108_prv_data *data = netdev_priv(dev);
|
|
|
|
tsi108_check_phy(dev);
|
|
tsi108_check_rxring(dev);
|
|
mod_timer(&data->timer, jiffies + CHECK_PHY_INTERVAL);
|
|
}
|
|
|
|
static int tsi108_ether_init(void)
|
|
{
|
|
int ret;
|
|
ret = platform_driver_register (&tsi_eth_driver);
|
|
if (ret < 0){
|
|
printk("tsi108_ether_init: error initializing ethernet "
|
|
"device\n");
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int tsi108_ether_remove(struct platform_device *pdev)
|
|
{
|
|
struct net_device *dev = platform_get_drvdata(pdev);
|
|
struct tsi108_prv_data *priv = netdev_priv(dev);
|
|
|
|
unregister_netdev(dev);
|
|
tsi108_stop_ethernet(dev);
|
|
platform_set_drvdata(pdev, NULL);
|
|
iounmap(priv->regs);
|
|
iounmap(priv->phyregs);
|
|
free_netdev(dev);
|
|
|
|
return 0;
|
|
}
|
|
static void tsi108_ether_exit(void)
|
|
{
|
|
platform_driver_unregister(&tsi_eth_driver);
|
|
}
|
|
|
|
module_init(tsi108_ether_init);
|
|
module_exit(tsi108_ether_exit);
|
|
|
|
MODULE_AUTHOR("Tundra Semiconductor Corporation");
|
|
MODULE_DESCRIPTION("Tsi108 Gigabit Ethernet driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:tsi-ethernet");
|