// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* smc911x.c
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* This is a driver for SMSC's LAN911{5,6,7,8} single-chip Ethernet devices.
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*
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* Copyright (C) 2005 Sensoria Corp
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* Derived from the unified SMC91x driver by Nicolas Pitre
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* and the smsc911x.c reference driver by SMSC
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*
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* Arguments:
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* watchdog = TX watchdog timeout
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* tx_fifo_kb = Size of TX FIFO in KB
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*
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* History:
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* 04/16/05 Dustin McIntire Initial version
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*/
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static const char version[] =
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"smc911x.c: v1.0 04-16-2005 by Dustin McIntire <dustin@sensoria.com>\n";
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/* Debugging options */
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#define ENABLE_SMC_DEBUG_RX 0
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#define ENABLE_SMC_DEBUG_TX 0
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#define ENABLE_SMC_DEBUG_DMA 0
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#define ENABLE_SMC_DEBUG_PKTS 0
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#define ENABLE_SMC_DEBUG_MISC 0
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#define ENABLE_SMC_DEBUG_FUNC 0
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#define SMC_DEBUG_RX ((ENABLE_SMC_DEBUG_RX ? 1 : 0) << 0)
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#define SMC_DEBUG_TX ((ENABLE_SMC_DEBUG_TX ? 1 : 0) << 1)
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#define SMC_DEBUG_DMA ((ENABLE_SMC_DEBUG_DMA ? 1 : 0) << 2)
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#define SMC_DEBUG_PKTS ((ENABLE_SMC_DEBUG_PKTS ? 1 : 0) << 3)
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#define SMC_DEBUG_MISC ((ENABLE_SMC_DEBUG_MISC ? 1 : 0) << 4)
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#define SMC_DEBUG_FUNC ((ENABLE_SMC_DEBUG_FUNC ? 1 : 0) << 5)
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#ifndef SMC_DEBUG
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#define SMC_DEBUG ( SMC_DEBUG_RX | \
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SMC_DEBUG_TX | \
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SMC_DEBUG_DMA | \
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SMC_DEBUG_PKTS | \
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SMC_DEBUG_MISC | \
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SMC_DEBUG_FUNC \
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)
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#endif
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/crc32.h>
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#include <linux/device.h>
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#include <linux/platform_device.h>
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#include <linux/spinlock.h>
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#include <linux/ethtool.h>
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#include <linux/mii.h>
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#include <linux/workqueue.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/dmaengine.h>
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#include <asm/io.h>
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#include "smc911x.h"
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/*
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* Transmit timeout, default 5 seconds.
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*/
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static int watchdog = 5000;
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module_param(watchdog, int, 0400);
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MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds");
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static int tx_fifo_kb=8;
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module_param(tx_fifo_kb, int, 0400);
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MODULE_PARM_DESC(tx_fifo_kb,"transmit FIFO size in KB (1<x<15)(default=8)");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:smc911x");
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/*
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* The internal workings of the driver. If you are changing anything
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* here with the SMC stuff, you should have the datasheet and know
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* what you are doing.
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*/
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#define CARDNAME "smc911x"
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/*
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* Use power-down feature of the chip
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*/
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#define POWER_DOWN 1
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#if SMC_DEBUG > 0
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#define DBG(n, dev, args...) \
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do { \
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if (SMC_DEBUG & (n)) \
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netdev_dbg(dev, args); \
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} while (0)
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#define PRINTK(dev, args...) netdev_info(dev, args)
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#else
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#define DBG(n, dev, args...) do { } while (0)
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#define PRINTK(dev, args...) netdev_dbg(dev, args)
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#endif
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#if SMC_DEBUG_PKTS > 0
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static void PRINT_PKT(u_char *buf, int length)
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{
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int i;
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int remainder;
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int lines;
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lines = length / 16;
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remainder = length % 16;
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for (i = 0; i < lines ; i ++) {
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int cur;
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printk(KERN_DEBUG);
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for (cur = 0; cur < 8; cur++) {
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u_char a, b;
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a = *buf++;
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b = *buf++;
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pr_cont("%02x%02x ", a, b);
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}
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pr_cont("\n");
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}
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printk(KERN_DEBUG);
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for (i = 0; i < remainder/2 ; i++) {
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u_char a, b;
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a = *buf++;
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b = *buf++;
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pr_cont("%02x%02x ", a, b);
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}
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pr_cont("\n");
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}
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#else
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#define PRINT_PKT(x...) do { } while (0)
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#endif
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/* this enables an interrupt in the interrupt mask register */
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#define SMC_ENABLE_INT(lp, x) do { \
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unsigned int __mask; \
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__mask = SMC_GET_INT_EN((lp)); \
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__mask |= (x); \
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SMC_SET_INT_EN((lp), __mask); \
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} while (0)
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/* this disables an interrupt from the interrupt mask register */
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#define SMC_DISABLE_INT(lp, x) do { \
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unsigned int __mask; \
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__mask = SMC_GET_INT_EN((lp)); \
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__mask &= ~(x); \
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SMC_SET_INT_EN((lp), __mask); \
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} while (0)
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/*
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* this does a soft reset on the device
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*/
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static void smc911x_reset(struct net_device *dev)
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{
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struct smc911x_local *lp = netdev_priv(dev);
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unsigned int reg, timeout=0, resets=1, irq_cfg;
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unsigned long flags;
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DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
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/* Take out of PM setting first */
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if ((SMC_GET_PMT_CTRL(lp) & PMT_CTRL_READY_) == 0) {
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/* Write to the bytetest will take out of powerdown */
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SMC_SET_BYTE_TEST(lp, 0);
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timeout=10;
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do {
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udelay(10);
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reg = SMC_GET_PMT_CTRL(lp) & PMT_CTRL_READY_;
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} while (--timeout && !reg);
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if (timeout == 0) {
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PRINTK(dev, "smc911x_reset timeout waiting for PM restore\n");
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return;
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}
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}
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/* Disable all interrupts */
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spin_lock_irqsave(&lp->lock, flags);
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SMC_SET_INT_EN(lp, 0);
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spin_unlock_irqrestore(&lp->lock, flags);
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while (resets--) {
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SMC_SET_HW_CFG(lp, HW_CFG_SRST_);
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timeout=10;
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do {
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udelay(10);
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reg = SMC_GET_HW_CFG(lp);
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/* If chip indicates reset timeout then try again */
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if (reg & HW_CFG_SRST_TO_) {
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PRINTK(dev, "chip reset timeout, retrying...\n");
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resets++;
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break;
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}
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} while (--timeout && (reg & HW_CFG_SRST_));
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}
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if (timeout == 0) {
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PRINTK(dev, "smc911x_reset timeout waiting for reset\n");
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return;
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}
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/* make sure EEPROM has finished loading before setting GPIO_CFG */
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timeout=1000;
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while (--timeout && (SMC_GET_E2P_CMD(lp) & E2P_CMD_EPC_BUSY_))
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udelay(10);
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if (timeout == 0){
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PRINTK(dev, "smc911x_reset timeout waiting for EEPROM busy\n");
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return;
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}
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/* Initialize interrupts */
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SMC_SET_INT_EN(lp, 0);
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SMC_ACK_INT(lp, -1);
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/* Reset the FIFO level and flow control settings */
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SMC_SET_HW_CFG(lp, (lp->tx_fifo_kb & 0xF) << 16);
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//TODO: Figure out what appropriate pause time is
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SMC_SET_FLOW(lp, FLOW_FCPT_ | FLOW_FCEN_);
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SMC_SET_AFC_CFG(lp, lp->afc_cfg);
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/* Set to LED outputs */
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SMC_SET_GPIO_CFG(lp, 0x70070000);
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/*
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* Deassert IRQ for 1*10us for edge type interrupts
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* and drive IRQ pin push-pull
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*/
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irq_cfg = (1 << 24) | INT_CFG_IRQ_EN_ | INT_CFG_IRQ_TYPE_;
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#ifdef SMC_DYNAMIC_BUS_CONFIG
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if (lp->cfg.irq_polarity)
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irq_cfg |= INT_CFG_IRQ_POL_;
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#endif
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SMC_SET_IRQ_CFG(lp, irq_cfg);
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/* clear anything saved */
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if (lp->pending_tx_skb != NULL) {
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dev_kfree_skb (lp->pending_tx_skb);
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lp->pending_tx_skb = NULL;
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dev->stats.tx_errors++;
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dev->stats.tx_aborted_errors++;
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}
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}
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/*
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* Enable Interrupts, Receive, and Transmit
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*/
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static void smc911x_enable(struct net_device *dev)
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{
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struct smc911x_local *lp = netdev_priv(dev);
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unsigned mask, cfg, cr;
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unsigned long flags;
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DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
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spin_lock_irqsave(&lp->lock, flags);
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SMC_SET_MAC_ADDR(lp, dev->dev_addr);
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/* Enable TX */
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cfg = SMC_GET_HW_CFG(lp);
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cfg &= HW_CFG_TX_FIF_SZ_ | 0xFFF;
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cfg |= HW_CFG_SF_;
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SMC_SET_HW_CFG(lp, cfg);
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SMC_SET_FIFO_TDA(lp, 0xFF);
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/* Update TX stats on every 64 packets received or every 1 sec */
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SMC_SET_FIFO_TSL(lp, 64);
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SMC_SET_GPT_CFG(lp, GPT_CFG_TIMER_EN_ | 10000);
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SMC_GET_MAC_CR(lp, cr);
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cr |= MAC_CR_TXEN_ | MAC_CR_HBDIS_;
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SMC_SET_MAC_CR(lp, cr);
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SMC_SET_TX_CFG(lp, TX_CFG_TX_ON_);
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/* Add 2 byte padding to start of packets */
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SMC_SET_RX_CFG(lp, (2<<8) & RX_CFG_RXDOFF_);
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/* Turn on receiver and enable RX */
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if (cr & MAC_CR_RXEN_)
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DBG(SMC_DEBUG_RX, dev, "Receiver already enabled\n");
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SMC_SET_MAC_CR(lp, cr | MAC_CR_RXEN_);
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/* Interrupt on every received packet */
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SMC_SET_FIFO_RSA(lp, 0x01);
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SMC_SET_FIFO_RSL(lp, 0x00);
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/* now, enable interrupts */
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mask = INT_EN_TDFA_EN_ | INT_EN_TSFL_EN_ | INT_EN_RSFL_EN_ |
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INT_EN_GPT_INT_EN_ | INT_EN_RXDFH_INT_EN_ | INT_EN_RXE_EN_ |
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INT_EN_PHY_INT_EN_;
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if (IS_REV_A(lp->revision))
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mask|=INT_EN_RDFL_EN_;
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else {
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mask|=INT_EN_RDFO_EN_;
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}
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SMC_ENABLE_INT(lp, mask);
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spin_unlock_irqrestore(&lp->lock, flags);
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}
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/*
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* this puts the device in an inactive state
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*/
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static void smc911x_shutdown(struct net_device *dev)
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{
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struct smc911x_local *lp = netdev_priv(dev);
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unsigned cr;
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unsigned long flags;
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DBG(SMC_DEBUG_FUNC, dev, "%s: --> %s\n", CARDNAME, __func__);
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/* Disable IRQ's */
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SMC_SET_INT_EN(lp, 0);
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/* Turn of Rx and TX */
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spin_lock_irqsave(&lp->lock, flags);
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SMC_GET_MAC_CR(lp, cr);
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cr &= ~(MAC_CR_TXEN_ | MAC_CR_RXEN_ | MAC_CR_HBDIS_);
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SMC_SET_MAC_CR(lp, cr);
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SMC_SET_TX_CFG(lp, TX_CFG_STOP_TX_);
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spin_unlock_irqrestore(&lp->lock, flags);
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}
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static inline void smc911x_drop_pkt(struct net_device *dev)
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{
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struct smc911x_local *lp = netdev_priv(dev);
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unsigned int fifo_count, timeout, reg;
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DBG(SMC_DEBUG_FUNC | SMC_DEBUG_RX, dev, "%s: --> %s\n",
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CARDNAME, __func__);
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fifo_count = SMC_GET_RX_FIFO_INF(lp) & 0xFFFF;
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if (fifo_count <= 4) {
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/* Manually dump the packet data */
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while (fifo_count--)
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SMC_GET_RX_FIFO(lp);
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} else {
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/* Fast forward through the bad packet */
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SMC_SET_RX_DP_CTRL(lp, RX_DP_CTRL_FFWD_BUSY_);
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timeout=50;
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do {
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udelay(10);
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reg = SMC_GET_RX_DP_CTRL(lp) & RX_DP_CTRL_FFWD_BUSY_;
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} while (--timeout && reg);
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if (timeout == 0) {
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PRINTK(dev, "timeout waiting for RX fast forward\n");
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}
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}
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}
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/*
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* This is the procedure to handle the receipt of a packet.
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* It should be called after checking for packet presence in
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* the RX status FIFO. It must be called with the spin lock
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* already held.
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*/
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static inline void smc911x_rcv(struct net_device *dev)
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{
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struct smc911x_local *lp = netdev_priv(dev);
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unsigned int pkt_len, status;
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struct sk_buff *skb;
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unsigned char *data;
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DBG(SMC_DEBUG_FUNC | SMC_DEBUG_RX, dev, "--> %s\n",
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__func__);
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status = SMC_GET_RX_STS_FIFO(lp);
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DBG(SMC_DEBUG_RX, dev, "Rx pkt len %d status 0x%08x\n",
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(status & 0x3fff0000) >> 16, status & 0xc000ffff);
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pkt_len = (status & RX_STS_PKT_LEN_) >> 16;
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if (status & RX_STS_ES_) {
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/* Deal with a bad packet */
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dev->stats.rx_errors++;
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if (status & RX_STS_CRC_ERR_)
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dev->stats.rx_crc_errors++;
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else {
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if (status & RX_STS_LEN_ERR_)
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dev->stats.rx_length_errors++;
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if (status & RX_STS_MCAST_)
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dev->stats.multicast++;
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}
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/* Remove the bad packet data from the RX FIFO */
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smc911x_drop_pkt(dev);
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} else {
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/* Receive a valid packet */
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/* Alloc a buffer with extra room for DMA alignment */
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skb = netdev_alloc_skb(dev, pkt_len+32);
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if (unlikely(skb == NULL)) {
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PRINTK(dev, "Low memory, rcvd packet dropped.\n");
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dev->stats.rx_dropped++;
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smc911x_drop_pkt(dev);
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return;
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}
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/* Align IP header to 32 bits
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* Note that the device is configured to add a 2
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* byte padding to the packet start, so we really
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* want to write to the orignal data pointer */
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data = skb->data;
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skb_reserve(skb, 2);
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skb_put(skb,pkt_len-4);
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#ifdef SMC_USE_DMA
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{
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unsigned int fifo;
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/* Lower the FIFO threshold if possible */
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fifo = SMC_GET_FIFO_INT(lp);
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if (fifo & 0xFF) fifo--;
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DBG(SMC_DEBUG_RX, dev, "Setting RX stat FIFO threshold to %d\n",
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fifo & 0xff);
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SMC_SET_FIFO_INT(lp, fifo);
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/* Setup RX DMA */
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SMC_SET_RX_CFG(lp, RX_CFG_RX_END_ALGN16_ | ((2<<8) & RX_CFG_RXDOFF_));
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lp->rxdma_active = 1;
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lp->current_rx_skb = skb;
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SMC_PULL_DATA(lp, data, (pkt_len+2+15) & ~15);
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/* Packet processing deferred to DMA RX interrupt */
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}
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#else
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SMC_SET_RX_CFG(lp, RX_CFG_RX_END_ALGN4_ | ((2<<8) & RX_CFG_RXDOFF_));
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SMC_PULL_DATA(lp, data, pkt_len+2+3);
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DBG(SMC_DEBUG_PKTS, dev, "Received packet\n");
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PRINT_PKT(data, ((pkt_len - 4) <= 64) ? pkt_len - 4 : 64);
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skb->protocol = eth_type_trans(skb, dev);
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netif_rx(skb);
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dev->stats.rx_packets++;
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dev->stats.rx_bytes += pkt_len-4;
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#endif
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}
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}
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/*
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* This is called to actually send a packet to the chip.
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*/
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static void smc911x_hardware_send_pkt(struct net_device *dev)
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{
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struct smc911x_local *lp = netdev_priv(dev);
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struct sk_buff *skb;
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unsigned int cmdA, cmdB, len;
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unsigned char *buf;
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DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, dev, "--> %s\n", __func__);
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BUG_ON(lp->pending_tx_skb == NULL);
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skb = lp->pending_tx_skb;
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lp->pending_tx_skb = NULL;
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/* cmdA {25:24] data alignment [20:16] start offset [10:0] buffer length */
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/* cmdB {31:16] pkt tag [10:0] length */
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#ifdef SMC_USE_DMA
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/* 16 byte buffer alignment mode */
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buf = (char*)((u32)(skb->data) & ~0xF);
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len = (skb->len + 0xF + ((u32)skb->data & 0xF)) & ~0xF;
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cmdA = (1<<24) | (((u32)skb->data & 0xF)<<16) |
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TX_CMD_A_INT_FIRST_SEG_ | TX_CMD_A_INT_LAST_SEG_ |
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skb->len;
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#else
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buf = (char*)((u32)skb->data & ~0x3);
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len = (skb->len + 3 + ((u32)skb->data & 3)) & ~0x3;
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cmdA = (((u32)skb->data & 0x3) << 16) |
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TX_CMD_A_INT_FIRST_SEG_ | TX_CMD_A_INT_LAST_SEG_ |
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skb->len;
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#endif
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/* tag is packet length so we can use this in stats update later */
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cmdB = (skb->len << 16) | (skb->len & 0x7FF);
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DBG(SMC_DEBUG_TX, dev, "TX PKT LENGTH 0x%04x (%d) BUF 0x%p CMDA 0x%08x CMDB 0x%08x\n",
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len, len, buf, cmdA, cmdB);
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SMC_SET_TX_FIFO(lp, cmdA);
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SMC_SET_TX_FIFO(lp, cmdB);
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DBG(SMC_DEBUG_PKTS, dev, "Transmitted packet\n");
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PRINT_PKT(buf, len <= 64 ? len : 64);
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/* Send pkt via PIO or DMA */
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#ifdef SMC_USE_DMA
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lp->current_tx_skb = skb;
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SMC_PUSH_DATA(lp, buf, len);
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/* DMA complete IRQ will free buffer and set jiffies */
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#else
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SMC_PUSH_DATA(lp, buf, len);
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netif_trans_update(dev);
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dev_kfree_skb_irq(skb);
|
#endif
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if (!lp->tx_throttle) {
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netif_wake_queue(dev);
|
}
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SMC_ENABLE_INT(lp, INT_EN_TDFA_EN_ | INT_EN_TSFL_EN_);
|
}
|
|
/*
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* Since I am not sure if I will have enough room in the chip's ram
|
* to store the packet, I call this routine which either sends it
|
* now, or set the card to generates an interrupt when ready
|
* for the packet.
|
*/
|
static netdev_tx_t
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smc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
{
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struct smc911x_local *lp = netdev_priv(dev);
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unsigned int free;
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unsigned long flags;
|
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DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, dev, "--> %s\n",
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__func__);
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spin_lock_irqsave(&lp->lock, flags);
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BUG_ON(lp->pending_tx_skb != NULL);
|
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free = SMC_GET_TX_FIFO_INF(lp) & TX_FIFO_INF_TDFREE_;
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DBG(SMC_DEBUG_TX, dev, "TX free space %d\n", free);
|
|
/* Turn off the flow when running out of space in FIFO */
|
if (free <= SMC911X_TX_FIFO_LOW_THRESHOLD) {
|
DBG(SMC_DEBUG_TX, dev, "Disabling data flow due to low FIFO space (%d)\n",
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free);
|
/* Reenable when at least 1 packet of size MTU present */
|
SMC_SET_FIFO_TDA(lp, (SMC911X_TX_FIFO_LOW_THRESHOLD)/64);
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lp->tx_throttle = 1;
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netif_stop_queue(dev);
|
}
|
|
/* Drop packets when we run out of space in TX FIFO
|
* Account for overhead required for:
|
*
|
* Tx command words 8 bytes
|
* Start offset 15 bytes
|
* End padding 15 bytes
|
*/
|
if (unlikely(free < (skb->len + 8 + 15 + 15))) {
|
netdev_warn(dev, "No Tx free space %d < %d\n",
|
free, skb->len);
|
lp->pending_tx_skb = NULL;
|
dev->stats.tx_errors++;
|
dev->stats.tx_dropped++;
|
spin_unlock_irqrestore(&lp->lock, flags);
|
dev_kfree_skb_any(skb);
|
return NETDEV_TX_OK;
|
}
|
|
#ifdef SMC_USE_DMA
|
{
|
/* If the DMA is already running then defer this packet Tx until
|
* the DMA IRQ starts it
|
*/
|
if (lp->txdma_active) {
|
DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev, "Tx DMA running, deferring packet\n");
|
lp->pending_tx_skb = skb;
|
netif_stop_queue(dev);
|
spin_unlock_irqrestore(&lp->lock, flags);
|
return NETDEV_TX_OK;
|
} else {
|
DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev, "Activating Tx DMA\n");
|
lp->txdma_active = 1;
|
}
|
}
|
#endif
|
lp->pending_tx_skb = skb;
|
smc911x_hardware_send_pkt(dev);
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
return NETDEV_TX_OK;
|
}
|
|
/*
|
* This handles a TX status interrupt, which is only called when:
|
* - a TX error occurred, or
|
* - TX of a packet completed.
|
*/
|
static void smc911x_tx(struct net_device *dev)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
unsigned int tx_status;
|
|
DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, dev, "--> %s\n",
|
__func__);
|
|
/* Collect the TX status */
|
while (((SMC_GET_TX_FIFO_INF(lp) & TX_FIFO_INF_TSUSED_) >> 16) != 0) {
|
DBG(SMC_DEBUG_TX, dev, "Tx stat FIFO used 0x%04x\n",
|
(SMC_GET_TX_FIFO_INF(lp) & TX_FIFO_INF_TSUSED_) >> 16);
|
tx_status = SMC_GET_TX_STS_FIFO(lp);
|
dev->stats.tx_packets++;
|
dev->stats.tx_bytes+=tx_status>>16;
|
DBG(SMC_DEBUG_TX, dev, "Tx FIFO tag 0x%04x status 0x%04x\n",
|
(tx_status & 0xffff0000) >> 16,
|
tx_status & 0x0000ffff);
|
/* count Tx errors, but ignore lost carrier errors when in
|
* full-duplex mode */
|
if ((tx_status & TX_STS_ES_) && !(lp->ctl_rfduplx &&
|
!(tx_status & 0x00000306))) {
|
dev->stats.tx_errors++;
|
}
|
if (tx_status & TX_STS_MANY_COLL_) {
|
dev->stats.collisions+=16;
|
dev->stats.tx_aborted_errors++;
|
} else {
|
dev->stats.collisions+=(tx_status & TX_STS_COLL_CNT_) >> 3;
|
}
|
/* carrier error only has meaning for half-duplex communication */
|
if ((tx_status & (TX_STS_LOC_ | TX_STS_NO_CARR_)) &&
|
!lp->ctl_rfduplx) {
|
dev->stats.tx_carrier_errors++;
|
}
|
if (tx_status & TX_STS_LATE_COLL_) {
|
dev->stats.collisions++;
|
dev->stats.tx_aborted_errors++;
|
}
|
}
|
}
|
|
|
/*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/
|
/*
|
* Reads a register from the MII Management serial interface
|
*/
|
|
static int smc911x_phy_read(struct net_device *dev, int phyaddr, int phyreg)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
unsigned int phydata;
|
|
SMC_GET_MII(lp, phyreg, phyaddr, phydata);
|
|
DBG(SMC_DEBUG_MISC, dev, "%s: phyaddr=0x%x, phyreg=0x%02x, phydata=0x%04x\n",
|
__func__, phyaddr, phyreg, phydata);
|
return phydata;
|
}
|
|
|
/*
|
* Writes a register to the MII Management serial interface
|
*/
|
static void smc911x_phy_write(struct net_device *dev, int phyaddr, int phyreg,
|
int phydata)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
|
DBG(SMC_DEBUG_MISC, dev, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n",
|
__func__, phyaddr, phyreg, phydata);
|
|
SMC_SET_MII(lp, phyreg, phyaddr, phydata);
|
}
|
|
/*
|
* Finds and reports the PHY address (115 and 117 have external
|
* PHY interface 118 has internal only
|
*/
|
static void smc911x_phy_detect(struct net_device *dev)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
int phyaddr;
|
unsigned int cfg, id1, id2;
|
|
DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
|
|
lp->phy_type = 0;
|
|
/*
|
* Scan all 32 PHY addresses if necessary, starting at
|
* PHY#1 to PHY#31, and then PHY#0 last.
|
*/
|
switch(lp->version) {
|
case CHIP_9115:
|
case CHIP_9117:
|
case CHIP_9215:
|
case CHIP_9217:
|
cfg = SMC_GET_HW_CFG(lp);
|
if (cfg & HW_CFG_EXT_PHY_DET_) {
|
cfg &= ~HW_CFG_PHY_CLK_SEL_;
|
cfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_;
|
SMC_SET_HW_CFG(lp, cfg);
|
udelay(10); /* Wait for clocks to stop */
|
|
cfg |= HW_CFG_EXT_PHY_EN_;
|
SMC_SET_HW_CFG(lp, cfg);
|
udelay(10); /* Wait for clocks to stop */
|
|
cfg &= ~HW_CFG_PHY_CLK_SEL_;
|
cfg |= HW_CFG_PHY_CLK_SEL_EXT_PHY_;
|
SMC_SET_HW_CFG(lp, cfg);
|
udelay(10); /* Wait for clocks to stop */
|
|
cfg |= HW_CFG_SMI_SEL_;
|
SMC_SET_HW_CFG(lp, cfg);
|
|
for (phyaddr = 1; phyaddr < 32; ++phyaddr) {
|
|
/* Read the PHY identifiers */
|
SMC_GET_PHY_ID1(lp, phyaddr & 31, id1);
|
SMC_GET_PHY_ID2(lp, phyaddr & 31, id2);
|
|
/* Make sure it is a valid identifier */
|
if (id1 != 0x0000 && id1 != 0xffff &&
|
id1 != 0x8000 && id2 != 0x0000 &&
|
id2 != 0xffff && id2 != 0x8000) {
|
/* Save the PHY's address */
|
lp->mii.phy_id = phyaddr & 31;
|
lp->phy_type = id1 << 16 | id2;
|
break;
|
}
|
}
|
if (phyaddr < 32)
|
/* Found an external PHY */
|
break;
|
}
|
fallthrough;
|
default:
|
/* Internal media only */
|
SMC_GET_PHY_ID1(lp, 1, id1);
|
SMC_GET_PHY_ID2(lp, 1, id2);
|
/* Save the PHY's address */
|
lp->mii.phy_id = 1;
|
lp->phy_type = id1 << 16 | id2;
|
}
|
|
DBG(SMC_DEBUG_MISC, dev, "phy_id1=0x%x, phy_id2=0x%x phyaddr=0x%x\n",
|
id1, id2, lp->mii.phy_id);
|
}
|
|
/*
|
* Sets the PHY to a configuration as determined by the user.
|
* Called with spin_lock held.
|
*/
|
static int smc911x_phy_fixed(struct net_device *dev)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
int phyaddr = lp->mii.phy_id;
|
int bmcr;
|
|
DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
|
|
/* Enter Link Disable state */
|
SMC_GET_PHY_BMCR(lp, phyaddr, bmcr);
|
bmcr |= BMCR_PDOWN;
|
SMC_SET_PHY_BMCR(lp, phyaddr, bmcr);
|
|
/*
|
* Set our fixed capabilities
|
* Disable auto-negotiation
|
*/
|
bmcr &= ~BMCR_ANENABLE;
|
if (lp->ctl_rfduplx)
|
bmcr |= BMCR_FULLDPLX;
|
|
if (lp->ctl_rspeed == 100)
|
bmcr |= BMCR_SPEED100;
|
|
/* Write our capabilities to the phy control register */
|
SMC_SET_PHY_BMCR(lp, phyaddr, bmcr);
|
|
/* Re-Configure the Receive/Phy Control register */
|
bmcr &= ~BMCR_PDOWN;
|
SMC_SET_PHY_BMCR(lp, phyaddr, bmcr);
|
|
return 1;
|
}
|
|
/**
|
* smc911x_phy_reset - reset the phy
|
* @dev: net device
|
* @phy: phy address
|
*
|
* Issue a software reset for the specified PHY and
|
* wait up to 100ms for the reset to complete. We should
|
* not access the PHY for 50ms after issuing the reset.
|
*
|
* The time to wait appears to be dependent on the PHY.
|
*
|
*/
|
static int smc911x_phy_reset(struct net_device *dev, int phy)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
int timeout;
|
unsigned long flags;
|
unsigned int reg;
|
|
DBG(SMC_DEBUG_FUNC, dev, "--> %s()\n", __func__);
|
|
spin_lock_irqsave(&lp->lock, flags);
|
reg = SMC_GET_PMT_CTRL(lp);
|
reg &= ~0xfffff030;
|
reg |= PMT_CTRL_PHY_RST_;
|
SMC_SET_PMT_CTRL(lp, reg);
|
spin_unlock_irqrestore(&lp->lock, flags);
|
for (timeout = 2; timeout; timeout--) {
|
msleep(50);
|
spin_lock_irqsave(&lp->lock, flags);
|
reg = SMC_GET_PMT_CTRL(lp);
|
spin_unlock_irqrestore(&lp->lock, flags);
|
if (!(reg & PMT_CTRL_PHY_RST_)) {
|
/* extra delay required because the phy may
|
* not be completed with its reset
|
* when PHY_BCR_RESET_ is cleared. 256us
|
* should suffice, but use 500us to be safe
|
*/
|
udelay(500);
|
break;
|
}
|
}
|
|
return reg & PMT_CTRL_PHY_RST_;
|
}
|
|
/**
|
* smc911x_phy_powerdown - powerdown phy
|
* @dev: net device
|
* @phy: phy address
|
*
|
* Power down the specified PHY
|
*/
|
static void smc911x_phy_powerdown(struct net_device *dev, int phy)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
unsigned int bmcr;
|
|
/* Enter Link Disable state */
|
SMC_GET_PHY_BMCR(lp, phy, bmcr);
|
bmcr |= BMCR_PDOWN;
|
SMC_SET_PHY_BMCR(lp, phy, bmcr);
|
}
|
|
/**
|
* smc911x_phy_check_media - check the media status and adjust BMCR
|
* @dev: net device
|
* @init: set true for initialisation
|
*
|
* Select duplex mode depending on negotiation state. This
|
* also updates our carrier state.
|
*/
|
static void smc911x_phy_check_media(struct net_device *dev, int init)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
int phyaddr = lp->mii.phy_id;
|
unsigned int bmcr, cr;
|
|
DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
|
|
if (mii_check_media(&lp->mii, netif_msg_link(lp), init)) {
|
/* duplex state has changed */
|
SMC_GET_PHY_BMCR(lp, phyaddr, bmcr);
|
SMC_GET_MAC_CR(lp, cr);
|
if (lp->mii.full_duplex) {
|
DBG(SMC_DEBUG_MISC, dev, "Configuring for full-duplex mode\n");
|
bmcr |= BMCR_FULLDPLX;
|
cr |= MAC_CR_RCVOWN_;
|
} else {
|
DBG(SMC_DEBUG_MISC, dev, "Configuring for half-duplex mode\n");
|
bmcr &= ~BMCR_FULLDPLX;
|
cr &= ~MAC_CR_RCVOWN_;
|
}
|
SMC_SET_PHY_BMCR(lp, phyaddr, bmcr);
|
SMC_SET_MAC_CR(lp, cr);
|
}
|
}
|
|
/*
|
* Configures the specified PHY through the MII management interface
|
* using Autonegotiation.
|
* Calls smc911x_phy_fixed() if the user has requested a certain config.
|
* If RPC ANEG bit is set, the media selection is dependent purely on
|
* the selection by the MII (either in the MII BMCR reg or the result
|
* of autonegotiation.) If the RPC ANEG bit is cleared, the selection
|
* is controlled by the RPC SPEED and RPC DPLX bits.
|
*/
|
static void smc911x_phy_configure(struct work_struct *work)
|
{
|
struct smc911x_local *lp = container_of(work, struct smc911x_local,
|
phy_configure);
|
struct net_device *dev = lp->netdev;
|
int phyaddr = lp->mii.phy_id;
|
int my_phy_caps; /* My PHY capabilities */
|
int my_ad_caps; /* My Advertised capabilities */
|
int status;
|
unsigned long flags;
|
|
DBG(SMC_DEBUG_FUNC, dev, "--> %s()\n", __func__);
|
|
/*
|
* We should not be called if phy_type is zero.
|
*/
|
if (lp->phy_type == 0)
|
return;
|
|
if (smc911x_phy_reset(dev, phyaddr)) {
|
netdev_info(dev, "PHY reset timed out\n");
|
return;
|
}
|
spin_lock_irqsave(&lp->lock, flags);
|
|
/*
|
* Enable PHY Interrupts (for register 18)
|
* Interrupts listed here are enabled
|
*/
|
SMC_SET_PHY_INT_MASK(lp, phyaddr, PHY_INT_MASK_ENERGY_ON_ |
|
PHY_INT_MASK_ANEG_COMP_ | PHY_INT_MASK_REMOTE_FAULT_ |
|
PHY_INT_MASK_LINK_DOWN_);
|
|
/* If the user requested no auto neg, then go set his request */
|
if (lp->mii.force_media) {
|
smc911x_phy_fixed(dev);
|
goto smc911x_phy_configure_exit;
|
}
|
|
/* Copy our capabilities from MII_BMSR to MII_ADVERTISE */
|
SMC_GET_PHY_BMSR(lp, phyaddr, my_phy_caps);
|
if (!(my_phy_caps & BMSR_ANEGCAPABLE)) {
|
netdev_info(dev, "Auto negotiation NOT supported\n");
|
smc911x_phy_fixed(dev);
|
goto smc911x_phy_configure_exit;
|
}
|
|
/* CSMA capable w/ both pauses */
|
my_ad_caps = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
|
|
if (my_phy_caps & BMSR_100BASE4)
|
my_ad_caps |= ADVERTISE_100BASE4;
|
if (my_phy_caps & BMSR_100FULL)
|
my_ad_caps |= ADVERTISE_100FULL;
|
if (my_phy_caps & BMSR_100HALF)
|
my_ad_caps |= ADVERTISE_100HALF;
|
if (my_phy_caps & BMSR_10FULL)
|
my_ad_caps |= ADVERTISE_10FULL;
|
if (my_phy_caps & BMSR_10HALF)
|
my_ad_caps |= ADVERTISE_10HALF;
|
|
/* Disable capabilities not selected by our user */
|
if (lp->ctl_rspeed != 100)
|
my_ad_caps &= ~(ADVERTISE_100BASE4|ADVERTISE_100FULL|ADVERTISE_100HALF);
|
|
if (!lp->ctl_rfduplx)
|
my_ad_caps &= ~(ADVERTISE_100FULL|ADVERTISE_10FULL);
|
|
/* Update our Auto-Neg Advertisement Register */
|
SMC_SET_PHY_MII_ADV(lp, phyaddr, my_ad_caps);
|
lp->mii.advertising = my_ad_caps;
|
|
/*
|
* Read the register back. Without this, it appears that when
|
* auto-negotiation is restarted, sometimes it isn't ready and
|
* the link does not come up.
|
*/
|
udelay(10);
|
SMC_GET_PHY_MII_ADV(lp, phyaddr, status);
|
|
DBG(SMC_DEBUG_MISC, dev, "phy caps=0x%04x\n", my_phy_caps);
|
DBG(SMC_DEBUG_MISC, dev, "phy advertised caps=0x%04x\n", my_ad_caps);
|
|
/* Restart auto-negotiation process in order to advertise my caps */
|
SMC_SET_PHY_BMCR(lp, phyaddr, BMCR_ANENABLE | BMCR_ANRESTART);
|
|
smc911x_phy_check_media(dev, 1);
|
|
smc911x_phy_configure_exit:
|
spin_unlock_irqrestore(&lp->lock, flags);
|
}
|
|
/*
|
* smc911x_phy_interrupt
|
*
|
* Purpose: Handle interrupts relating to PHY register 18. This is
|
* called from the "hard" interrupt handler under our private spinlock.
|
*/
|
static void smc911x_phy_interrupt(struct net_device *dev)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
int phyaddr = lp->mii.phy_id;
|
int status;
|
|
DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
|
|
if (lp->phy_type == 0)
|
return;
|
|
smc911x_phy_check_media(dev, 0);
|
/* read to clear status bits */
|
SMC_GET_PHY_INT_SRC(lp, phyaddr,status);
|
DBG(SMC_DEBUG_MISC, dev, "PHY interrupt status 0x%04x\n",
|
status & 0xffff);
|
DBG(SMC_DEBUG_MISC, dev, "AFC_CFG 0x%08x\n",
|
SMC_GET_AFC_CFG(lp));
|
}
|
|
/*--- END PHY CONTROL AND CONFIGURATION-------------------------------------*/
|
|
/*
|
* This is the main routine of the driver, to handle the device when
|
* it needs some attention.
|
*/
|
static irqreturn_t smc911x_interrupt(int irq, void *dev_id)
|
{
|
struct net_device *dev = dev_id;
|
struct smc911x_local *lp = netdev_priv(dev);
|
unsigned int status, mask, timeout;
|
unsigned int rx_overrun=0, cr, pkts;
|
unsigned long flags;
|
|
DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
/* Spurious interrupt check */
|
if ((SMC_GET_IRQ_CFG(lp) & (INT_CFG_IRQ_INT_ | INT_CFG_IRQ_EN_)) !=
|
(INT_CFG_IRQ_INT_ | INT_CFG_IRQ_EN_)) {
|
spin_unlock_irqrestore(&lp->lock, flags);
|
return IRQ_NONE;
|
}
|
|
mask = SMC_GET_INT_EN(lp);
|
SMC_SET_INT_EN(lp, 0);
|
|
/* set a timeout value, so I don't stay here forever */
|
timeout = 8;
|
|
|
do {
|
status = SMC_GET_INT(lp);
|
|
DBG(SMC_DEBUG_MISC, dev, "INT 0x%08x MASK 0x%08x OUTSIDE MASK 0x%08x\n",
|
status, mask, status & ~mask);
|
|
status &= mask;
|
if (!status)
|
break;
|
|
/* Handle SW interrupt condition */
|
if (status & INT_STS_SW_INT_) {
|
SMC_ACK_INT(lp, INT_STS_SW_INT_);
|
mask &= ~INT_EN_SW_INT_EN_;
|
}
|
/* Handle various error conditions */
|
if (status & INT_STS_RXE_) {
|
SMC_ACK_INT(lp, INT_STS_RXE_);
|
dev->stats.rx_errors++;
|
}
|
if (status & INT_STS_RXDFH_INT_) {
|
SMC_ACK_INT(lp, INT_STS_RXDFH_INT_);
|
dev->stats.rx_dropped+=SMC_GET_RX_DROP(lp);
|
}
|
/* Undocumented interrupt-what is the right thing to do here? */
|
if (status & INT_STS_RXDF_INT_) {
|
SMC_ACK_INT(lp, INT_STS_RXDF_INT_);
|
}
|
|
/* Rx Data FIFO exceeds set level */
|
if (status & INT_STS_RDFL_) {
|
if (IS_REV_A(lp->revision)) {
|
rx_overrun=1;
|
SMC_GET_MAC_CR(lp, cr);
|
cr &= ~MAC_CR_RXEN_;
|
SMC_SET_MAC_CR(lp, cr);
|
DBG(SMC_DEBUG_RX, dev, "RX overrun\n");
|
dev->stats.rx_errors++;
|
dev->stats.rx_fifo_errors++;
|
}
|
SMC_ACK_INT(lp, INT_STS_RDFL_);
|
}
|
if (status & INT_STS_RDFO_) {
|
if (!IS_REV_A(lp->revision)) {
|
SMC_GET_MAC_CR(lp, cr);
|
cr &= ~MAC_CR_RXEN_;
|
SMC_SET_MAC_CR(lp, cr);
|
rx_overrun=1;
|
DBG(SMC_DEBUG_RX, dev, "RX overrun\n");
|
dev->stats.rx_errors++;
|
dev->stats.rx_fifo_errors++;
|
}
|
SMC_ACK_INT(lp, INT_STS_RDFO_);
|
}
|
/* Handle receive condition */
|
if ((status & INT_STS_RSFL_) || rx_overrun) {
|
unsigned int fifo;
|
DBG(SMC_DEBUG_RX, dev, "RX irq\n");
|
fifo = SMC_GET_RX_FIFO_INF(lp);
|
pkts = (fifo & RX_FIFO_INF_RXSUSED_) >> 16;
|
DBG(SMC_DEBUG_RX, dev, "Rx FIFO pkts %d, bytes %d\n",
|
pkts, fifo & 0xFFFF);
|
if (pkts != 0) {
|
#ifdef SMC_USE_DMA
|
unsigned int fifo;
|
if (lp->rxdma_active){
|
DBG(SMC_DEBUG_RX | SMC_DEBUG_DMA, dev,
|
"RX DMA active\n");
|
/* The DMA is already running so up the IRQ threshold */
|
fifo = SMC_GET_FIFO_INT(lp) & ~0xFF;
|
fifo |= pkts & 0xFF;
|
DBG(SMC_DEBUG_RX, dev,
|
"Setting RX stat FIFO threshold to %d\n",
|
fifo & 0xff);
|
SMC_SET_FIFO_INT(lp, fifo);
|
} else
|
#endif
|
smc911x_rcv(dev);
|
}
|
SMC_ACK_INT(lp, INT_STS_RSFL_);
|
}
|
/* Handle transmit FIFO available */
|
if (status & INT_STS_TDFA_) {
|
DBG(SMC_DEBUG_TX, dev, "TX data FIFO space available irq\n");
|
SMC_SET_FIFO_TDA(lp, 0xFF);
|
lp->tx_throttle = 0;
|
#ifdef SMC_USE_DMA
|
if (!lp->txdma_active)
|
#endif
|
netif_wake_queue(dev);
|
SMC_ACK_INT(lp, INT_STS_TDFA_);
|
}
|
/* Handle transmit done condition */
|
#if 1
|
if (status & (INT_STS_TSFL_ | INT_STS_GPT_INT_)) {
|
DBG(SMC_DEBUG_TX | SMC_DEBUG_MISC, dev,
|
"Tx stat FIFO limit (%d) /GPT irq\n",
|
(SMC_GET_FIFO_INT(lp) & 0x00ff0000) >> 16);
|
smc911x_tx(dev);
|
SMC_SET_GPT_CFG(lp, GPT_CFG_TIMER_EN_ | 10000);
|
SMC_ACK_INT(lp, INT_STS_TSFL_);
|
SMC_ACK_INT(lp, INT_STS_TSFL_ | INT_STS_GPT_INT_);
|
}
|
#else
|
if (status & INT_STS_TSFL_) {
|
DBG(SMC_DEBUG_TX, dev, "TX status FIFO limit (%d) irq\n", ?);
|
smc911x_tx(dev);
|
SMC_ACK_INT(lp, INT_STS_TSFL_);
|
}
|
|
if (status & INT_STS_GPT_INT_) {
|
DBG(SMC_DEBUG_RX, dev, "IRQ_CFG 0x%08x FIFO_INT 0x%08x RX_CFG 0x%08x\n",
|
SMC_GET_IRQ_CFG(lp),
|
SMC_GET_FIFO_INT(lp),
|
SMC_GET_RX_CFG(lp));
|
DBG(SMC_DEBUG_RX, dev, "Rx Stat FIFO Used 0x%02x Data FIFO Used 0x%04x Stat FIFO 0x%08x\n",
|
(SMC_GET_RX_FIFO_INF(lp) & 0x00ff0000) >> 16,
|
SMC_GET_RX_FIFO_INF(lp) & 0xffff,
|
SMC_GET_RX_STS_FIFO_PEEK(lp));
|
SMC_SET_GPT_CFG(lp, GPT_CFG_TIMER_EN_ | 10000);
|
SMC_ACK_INT(lp, INT_STS_GPT_INT_);
|
}
|
#endif
|
|
/* Handle PHY interrupt condition */
|
if (status & INT_STS_PHY_INT_) {
|
DBG(SMC_DEBUG_MISC, dev, "PHY irq\n");
|
smc911x_phy_interrupt(dev);
|
SMC_ACK_INT(lp, INT_STS_PHY_INT_);
|
}
|
} while (--timeout);
|
|
/* restore mask state */
|
SMC_SET_INT_EN(lp, mask);
|
|
DBG(SMC_DEBUG_MISC, dev, "Interrupt done (%d loops)\n",
|
8-timeout);
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
return IRQ_HANDLED;
|
}
|
|
#ifdef SMC_USE_DMA
|
static void
|
smc911x_tx_dma_irq(void *data)
|
{
|
struct smc911x_local *lp = data;
|
struct net_device *dev = lp->netdev;
|
struct sk_buff *skb = lp->current_tx_skb;
|
unsigned long flags;
|
|
DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
|
|
DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev, "TX DMA irq handler\n");
|
BUG_ON(skb == NULL);
|
dma_unmap_single(lp->dev, tx_dmabuf, tx_dmalen, DMA_TO_DEVICE);
|
netif_trans_update(dev);
|
dev_kfree_skb_irq(skb);
|
lp->current_tx_skb = NULL;
|
if (lp->pending_tx_skb != NULL)
|
smc911x_hardware_send_pkt(dev);
|
else {
|
DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev,
|
"No pending Tx packets. DMA disabled\n");
|
spin_lock_irqsave(&lp->lock, flags);
|
lp->txdma_active = 0;
|
if (!lp->tx_throttle) {
|
netif_wake_queue(dev);
|
}
|
spin_unlock_irqrestore(&lp->lock, flags);
|
}
|
|
DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev,
|
"TX DMA irq completed\n");
|
}
|
static void
|
smc911x_rx_dma_irq(void *data)
|
{
|
struct smc911x_local *lp = data;
|
struct net_device *dev = lp->netdev;
|
struct sk_buff *skb = lp->current_rx_skb;
|
unsigned long flags;
|
unsigned int pkts;
|
|
DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
|
DBG(SMC_DEBUG_RX | SMC_DEBUG_DMA, dev, "RX DMA irq handler\n");
|
dma_unmap_single(lp->dev, rx_dmabuf, rx_dmalen, DMA_FROM_DEVICE);
|
BUG_ON(skb == NULL);
|
lp->current_rx_skb = NULL;
|
PRINT_PKT(skb->data, skb->len);
|
skb->protocol = eth_type_trans(skb, dev);
|
dev->stats.rx_packets++;
|
dev->stats.rx_bytes += skb->len;
|
netif_rx(skb);
|
|
spin_lock_irqsave(&lp->lock, flags);
|
pkts = (SMC_GET_RX_FIFO_INF(lp) & RX_FIFO_INF_RXSUSED_) >> 16;
|
if (pkts != 0) {
|
smc911x_rcv(dev);
|
}else {
|
lp->rxdma_active = 0;
|
}
|
spin_unlock_irqrestore(&lp->lock, flags);
|
DBG(SMC_DEBUG_RX | SMC_DEBUG_DMA, dev,
|
"RX DMA irq completed. DMA RX FIFO PKTS %d\n",
|
pkts);
|
}
|
#endif /* SMC_USE_DMA */
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
/*
|
* Polling receive - used by netconsole and other diagnostic tools
|
* to allow network i/o with interrupts disabled.
|
*/
|
static void smc911x_poll_controller(struct net_device *dev)
|
{
|
disable_irq(dev->irq);
|
smc911x_interrupt(dev->irq, dev);
|
enable_irq(dev->irq);
|
}
|
#endif
|
|
/* Our watchdog timed out. Called by the networking layer */
|
static void smc911x_timeout(struct net_device *dev, unsigned int txqueue)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
int status, mask;
|
unsigned long flags;
|
|
DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
|
|
spin_lock_irqsave(&lp->lock, flags);
|
status = SMC_GET_INT(lp);
|
mask = SMC_GET_INT_EN(lp);
|
spin_unlock_irqrestore(&lp->lock, flags);
|
DBG(SMC_DEBUG_MISC, dev, "INT 0x%02x MASK 0x%02x\n",
|
status, mask);
|
|
/* Dump the current TX FIFO contents and restart */
|
mask = SMC_GET_TX_CFG(lp);
|
SMC_SET_TX_CFG(lp, mask | TX_CFG_TXS_DUMP_ | TX_CFG_TXD_DUMP_);
|
/*
|
* Reconfiguring the PHY doesn't seem like a bad idea here, but
|
* smc911x_phy_configure() calls msleep() which calls schedule_timeout()
|
* which calls schedule(). Hence we use a work queue.
|
*/
|
if (lp->phy_type != 0)
|
schedule_work(&lp->phy_configure);
|
|
/* We can accept TX packets again */
|
netif_trans_update(dev); /* prevent tx timeout */
|
netif_wake_queue(dev);
|
}
|
|
/*
|
* This routine will, depending on the values passed to it,
|
* either make it accept multicast packets, go into
|
* promiscuous mode (for TCPDUMP and cousins) or accept
|
* a select set of multicast packets
|
*/
|
static void smc911x_set_multicast_list(struct net_device *dev)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
unsigned int multicast_table[2];
|
unsigned int mcr, update_multicast = 0;
|
unsigned long flags;
|
|
DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
|
|
spin_lock_irqsave(&lp->lock, flags);
|
SMC_GET_MAC_CR(lp, mcr);
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
if (dev->flags & IFF_PROMISC) {
|
|
DBG(SMC_DEBUG_MISC, dev, "RCR_PRMS\n");
|
mcr |= MAC_CR_PRMS_;
|
}
|
/*
|
* Here, I am setting this to accept all multicast packets.
|
* I don't need to zero the multicast table, because the flag is
|
* checked before the table is
|
*/
|
else if (dev->flags & IFF_ALLMULTI || netdev_mc_count(dev) > 16) {
|
DBG(SMC_DEBUG_MISC, dev, "RCR_ALMUL\n");
|
mcr |= MAC_CR_MCPAS_;
|
}
|
|
/*
|
* This sets the internal hardware table to filter out unwanted
|
* multicast packets before they take up memory.
|
*
|
* The SMC chip uses a hash table where the high 6 bits of the CRC of
|
* address are the offset into the table. If that bit is 1, then the
|
* multicast packet is accepted. Otherwise, it's dropped silently.
|
*
|
* To use the 6 bits as an offset into the table, the high 1 bit is
|
* the number of the 32 bit register, while the low 5 bits are the bit
|
* within that register.
|
*/
|
else if (!netdev_mc_empty(dev)) {
|
struct netdev_hw_addr *ha;
|
|
/* Set the Hash perfec mode */
|
mcr |= MAC_CR_HPFILT_;
|
|
/* start with a table of all zeros: reject all */
|
memset(multicast_table, 0, sizeof(multicast_table));
|
|
netdev_for_each_mc_addr(ha, dev) {
|
u32 position;
|
|
/* upper 6 bits are used as hash index */
|
position = ether_crc(ETH_ALEN, ha->addr)>>26;
|
|
multicast_table[position>>5] |= 1 << (position&0x1f);
|
}
|
|
/* be sure I get rid of flags I might have set */
|
mcr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_);
|
|
/* now, the table can be loaded into the chipset */
|
update_multicast = 1;
|
} else {
|
DBG(SMC_DEBUG_MISC, dev, "~(MAC_CR_PRMS_|MAC_CR_MCPAS_)\n");
|
mcr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_);
|
|
/*
|
* since I'm disabling all multicast entirely, I need to
|
* clear the multicast list
|
*/
|
memset(multicast_table, 0, sizeof(multicast_table));
|
update_multicast = 1;
|
}
|
|
spin_lock_irqsave(&lp->lock, flags);
|
SMC_SET_MAC_CR(lp, mcr);
|
if (update_multicast) {
|
DBG(SMC_DEBUG_MISC, dev,
|
"update mcast hash table 0x%08x 0x%08x\n",
|
multicast_table[0], multicast_table[1]);
|
SMC_SET_HASHL(lp, multicast_table[0]);
|
SMC_SET_HASHH(lp, multicast_table[1]);
|
}
|
spin_unlock_irqrestore(&lp->lock, flags);
|
}
|
|
|
/*
|
* Open and Initialize the board
|
*
|
* Set up everything, reset the card, etc..
|
*/
|
static int
|
smc911x_open(struct net_device *dev)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
|
DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
|
|
/* reset the hardware */
|
smc911x_reset(dev);
|
|
/* Configure the PHY, initialize the link state */
|
smc911x_phy_configure(&lp->phy_configure);
|
|
/* Turn on Tx + Rx */
|
smc911x_enable(dev);
|
|
netif_start_queue(dev);
|
|
return 0;
|
}
|
|
/*
|
* smc911x_close
|
*
|
* this makes the board clean up everything that it can
|
* and not talk to the outside world. Caused by
|
* an 'ifconfig ethX down'
|
*/
|
static int smc911x_close(struct net_device *dev)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
|
DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
|
|
netif_stop_queue(dev);
|
netif_carrier_off(dev);
|
|
/* clear everything */
|
smc911x_shutdown(dev);
|
|
if (lp->phy_type != 0) {
|
/* We need to ensure that no calls to
|
* smc911x_phy_configure are pending.
|
*/
|
cancel_work_sync(&lp->phy_configure);
|
smc911x_phy_powerdown(dev, lp->mii.phy_id);
|
}
|
|
if (lp->pending_tx_skb) {
|
dev_kfree_skb(lp->pending_tx_skb);
|
lp->pending_tx_skb = NULL;
|
}
|
|
return 0;
|
}
|
|
/*
|
* Ethtool support
|
*/
|
static int
|
smc911x_ethtool_get_link_ksettings(struct net_device *dev,
|
struct ethtool_link_ksettings *cmd)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
int status;
|
unsigned long flags;
|
u32 supported;
|
|
DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
|
|
if (lp->phy_type != 0) {
|
spin_lock_irqsave(&lp->lock, flags);
|
mii_ethtool_get_link_ksettings(&lp->mii, cmd);
|
spin_unlock_irqrestore(&lp->lock, flags);
|
} else {
|
supported = SUPPORTED_10baseT_Half |
|
SUPPORTED_10baseT_Full |
|
SUPPORTED_TP | SUPPORTED_AUI;
|
|
if (lp->ctl_rspeed == 10)
|
cmd->base.speed = SPEED_10;
|
else if (lp->ctl_rspeed == 100)
|
cmd->base.speed = SPEED_100;
|
|
cmd->base.autoneg = AUTONEG_DISABLE;
|
cmd->base.port = 0;
|
SMC_GET_PHY_SPECIAL(lp, lp->mii.phy_id, status);
|
cmd->base.duplex =
|
(status & (PHY_SPECIAL_SPD_10FULL_ | PHY_SPECIAL_SPD_100FULL_)) ?
|
DUPLEX_FULL : DUPLEX_HALF;
|
|
ethtool_convert_legacy_u32_to_link_mode(
|
cmd->link_modes.supported, supported);
|
|
}
|
|
return 0;
|
}
|
|
static int
|
smc911x_ethtool_set_link_ksettings(struct net_device *dev,
|
const struct ethtool_link_ksettings *cmd)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
int ret;
|
unsigned long flags;
|
|
if (lp->phy_type != 0) {
|
spin_lock_irqsave(&lp->lock, flags);
|
ret = mii_ethtool_set_link_ksettings(&lp->mii, cmd);
|
spin_unlock_irqrestore(&lp->lock, flags);
|
} else {
|
if (cmd->base.autoneg != AUTONEG_DISABLE ||
|
cmd->base.speed != SPEED_10 ||
|
(cmd->base.duplex != DUPLEX_HALF &&
|
cmd->base.duplex != DUPLEX_FULL) ||
|
(cmd->base.port != PORT_TP &&
|
cmd->base.port != PORT_AUI))
|
return -EINVAL;
|
|
lp->ctl_rfduplx = cmd->base.duplex == DUPLEX_FULL;
|
|
ret = 0;
|
}
|
|
return ret;
|
}
|
|
static void
|
smc911x_ethtool_getdrvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
|
{
|
strlcpy(info->driver, CARDNAME, sizeof(info->driver));
|
strlcpy(info->version, version, sizeof(info->version));
|
strlcpy(info->bus_info, dev_name(dev->dev.parent),
|
sizeof(info->bus_info));
|
}
|
|
static int smc911x_ethtool_nwayreset(struct net_device *dev)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
int ret = -EINVAL;
|
unsigned long flags;
|
|
if (lp->phy_type != 0) {
|
spin_lock_irqsave(&lp->lock, flags);
|
ret = mii_nway_restart(&lp->mii);
|
spin_unlock_irqrestore(&lp->lock, flags);
|
}
|
|
return ret;
|
}
|
|
static u32 smc911x_ethtool_getmsglevel(struct net_device *dev)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
return lp->msg_enable;
|
}
|
|
static void smc911x_ethtool_setmsglevel(struct net_device *dev, u32 level)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
lp->msg_enable = level;
|
}
|
|
static int smc911x_ethtool_getregslen(struct net_device *dev)
|
{
|
/* System regs + MAC regs + PHY regs */
|
return (((E2P_CMD - ID_REV)/4 + 1) +
|
(WUCSR - MAC_CR)+1 + 32) * sizeof(u32);
|
}
|
|
static void smc911x_ethtool_getregs(struct net_device *dev,
|
struct ethtool_regs* regs, void *buf)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
unsigned long flags;
|
u32 reg,i,j=0;
|
u32 *data = (u32*)buf;
|
|
regs->version = lp->version;
|
for(i=ID_REV;i<=E2P_CMD;i+=4) {
|
data[j++] = SMC_inl(lp, i);
|
}
|
for(i=MAC_CR;i<=WUCSR;i++) {
|
spin_lock_irqsave(&lp->lock, flags);
|
SMC_GET_MAC_CSR(lp, i, reg);
|
spin_unlock_irqrestore(&lp->lock, flags);
|
data[j++] = reg;
|
}
|
for(i=0;i<=31;i++) {
|
spin_lock_irqsave(&lp->lock, flags);
|
SMC_GET_MII(lp, i, lp->mii.phy_id, reg);
|
spin_unlock_irqrestore(&lp->lock, flags);
|
data[j++] = reg & 0xFFFF;
|
}
|
}
|
|
static int smc911x_ethtool_wait_eeprom_ready(struct net_device *dev)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
unsigned int timeout;
|
int e2p_cmd;
|
|
e2p_cmd = SMC_GET_E2P_CMD(lp);
|
for(timeout=10;(e2p_cmd & E2P_CMD_EPC_BUSY_) && timeout; timeout--) {
|
if (e2p_cmd & E2P_CMD_EPC_TIMEOUT_) {
|
PRINTK(dev, "%s timeout waiting for EEPROM to respond\n",
|
__func__);
|
return -EFAULT;
|
}
|
mdelay(1);
|
e2p_cmd = SMC_GET_E2P_CMD(lp);
|
}
|
if (timeout == 0) {
|
PRINTK(dev, "%s timeout waiting for EEPROM CMD not busy\n",
|
__func__);
|
return -ETIMEDOUT;
|
}
|
return 0;
|
}
|
|
static inline int smc911x_ethtool_write_eeprom_cmd(struct net_device *dev,
|
int cmd, int addr)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
int ret;
|
|
if ((ret = smc911x_ethtool_wait_eeprom_ready(dev))!=0)
|
return ret;
|
SMC_SET_E2P_CMD(lp, E2P_CMD_EPC_BUSY_ |
|
((cmd) & (0x7<<28)) |
|
((addr) & 0xFF));
|
return 0;
|
}
|
|
static inline int smc911x_ethtool_read_eeprom_byte(struct net_device *dev,
|
u8 *data)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
int ret;
|
|
if ((ret = smc911x_ethtool_wait_eeprom_ready(dev))!=0)
|
return ret;
|
*data = SMC_GET_E2P_DATA(lp);
|
return 0;
|
}
|
|
static inline int smc911x_ethtool_write_eeprom_byte(struct net_device *dev,
|
u8 data)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
int ret;
|
|
if ((ret = smc911x_ethtool_wait_eeprom_ready(dev))!=0)
|
return ret;
|
SMC_SET_E2P_DATA(lp, data);
|
return 0;
|
}
|
|
static int smc911x_ethtool_geteeprom(struct net_device *dev,
|
struct ethtool_eeprom *eeprom, u8 *data)
|
{
|
u8 eebuf[SMC911X_EEPROM_LEN];
|
int i, ret;
|
|
for(i=0;i<SMC911X_EEPROM_LEN;i++) {
|
if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_READ_, i ))!=0)
|
return ret;
|
if ((ret=smc911x_ethtool_read_eeprom_byte(dev, &eebuf[i]))!=0)
|
return ret;
|
}
|
memcpy(data, eebuf+eeprom->offset, eeprom->len);
|
return 0;
|
}
|
|
static int smc911x_ethtool_seteeprom(struct net_device *dev,
|
struct ethtool_eeprom *eeprom, u8 *data)
|
{
|
int i, ret;
|
|
/* Enable erase */
|
if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_EWEN_, 0 ))!=0)
|
return ret;
|
for(i=eeprom->offset;i<(eeprom->offset+eeprom->len);i++) {
|
/* erase byte */
|
if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_ERASE_, i ))!=0)
|
return ret;
|
/* write byte */
|
if ((ret=smc911x_ethtool_write_eeprom_byte(dev, *data))!=0)
|
return ret;
|
if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_WRITE_, i ))!=0)
|
return ret;
|
}
|
return 0;
|
}
|
|
static int smc911x_ethtool_geteeprom_len(struct net_device *dev)
|
{
|
return SMC911X_EEPROM_LEN;
|
}
|
|
static const struct ethtool_ops smc911x_ethtool_ops = {
|
.get_drvinfo = smc911x_ethtool_getdrvinfo,
|
.get_msglevel = smc911x_ethtool_getmsglevel,
|
.set_msglevel = smc911x_ethtool_setmsglevel,
|
.nway_reset = smc911x_ethtool_nwayreset,
|
.get_link = ethtool_op_get_link,
|
.get_regs_len = smc911x_ethtool_getregslen,
|
.get_regs = smc911x_ethtool_getregs,
|
.get_eeprom_len = smc911x_ethtool_geteeprom_len,
|
.get_eeprom = smc911x_ethtool_geteeprom,
|
.set_eeprom = smc911x_ethtool_seteeprom,
|
.get_link_ksettings = smc911x_ethtool_get_link_ksettings,
|
.set_link_ksettings = smc911x_ethtool_set_link_ksettings,
|
};
|
|
/*
|
* smc911x_findirq
|
*
|
* This routine has a simple purpose -- make the SMC chip generate an
|
* interrupt, so an auto-detect routine can detect it, and find the IRQ,
|
*/
|
static int smc911x_findirq(struct net_device *dev)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
int timeout = 20;
|
unsigned long cookie;
|
|
DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
|
|
cookie = probe_irq_on();
|
|
/*
|
* Force a SW interrupt
|
*/
|
|
SMC_SET_INT_EN(lp, INT_EN_SW_INT_EN_);
|
|
/*
|
* Wait until positive that the interrupt has been generated
|
*/
|
do {
|
int int_status;
|
udelay(10);
|
int_status = SMC_GET_INT_EN(lp);
|
if (int_status & INT_EN_SW_INT_EN_)
|
break; /* got the interrupt */
|
} while (--timeout);
|
|
/*
|
* there is really nothing that I can do here if timeout fails,
|
* as autoirq_report will return a 0 anyway, which is what I
|
* want in this case. Plus, the clean up is needed in both
|
* cases.
|
*/
|
|
/* and disable all interrupts again */
|
SMC_SET_INT_EN(lp, 0);
|
|
/* and return what I found */
|
return probe_irq_off(cookie);
|
}
|
|
static const struct net_device_ops smc911x_netdev_ops = {
|
.ndo_open = smc911x_open,
|
.ndo_stop = smc911x_close,
|
.ndo_start_xmit = smc911x_hard_start_xmit,
|
.ndo_tx_timeout = smc911x_timeout,
|
.ndo_set_rx_mode = smc911x_set_multicast_list,
|
.ndo_validate_addr = eth_validate_addr,
|
.ndo_set_mac_address = eth_mac_addr,
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
.ndo_poll_controller = smc911x_poll_controller,
|
#endif
|
};
|
|
/*
|
* Function: smc911x_probe(unsigned long ioaddr)
|
*
|
* Purpose:
|
* Tests to see if a given ioaddr points to an SMC911x chip.
|
* Returns a 0 on success
|
*
|
* Algorithm:
|
* (1) see if the endian word is OK
|
* (1) see if I recognize the chip ID in the appropriate register
|
*
|
* Here I do typical initialization tasks.
|
*
|
* o Initialize the structure if needed
|
* o print out my vanity message if not done so already
|
* o print out what type of hardware is detected
|
* o print out the ethernet address
|
* o find the IRQ
|
* o set up my private data
|
* o configure the dev structure with my subroutines
|
* o actually GRAB the irq.
|
* o GRAB the region
|
*/
|
static int smc911x_probe(struct net_device *dev)
|
{
|
struct smc911x_local *lp = netdev_priv(dev);
|
int i, retval;
|
unsigned int val, chip_id, revision;
|
const char *version_string;
|
unsigned long irq_flags;
|
#ifdef SMC_USE_DMA
|
struct dma_slave_config config;
|
dma_cap_mask_t mask;
|
#endif
|
|
DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
|
|
/* First, see if the endian word is recognized */
|
val = SMC_GET_BYTE_TEST(lp);
|
DBG(SMC_DEBUG_MISC, dev, "%s: endian probe returned 0x%04x\n",
|
CARDNAME, val);
|
if (val != 0x87654321) {
|
netdev_err(dev, "Invalid chip endian 0x%08x\n", val);
|
retval = -ENODEV;
|
goto err_out;
|
}
|
|
/*
|
* check if the revision register is something that I
|
* recognize. These might need to be added to later,
|
* as future revisions could be added.
|
*/
|
chip_id = SMC_GET_PN(lp);
|
DBG(SMC_DEBUG_MISC, dev, "%s: id probe returned 0x%04x\n",
|
CARDNAME, chip_id);
|
for(i=0;chip_ids[i].id != 0; i++) {
|
if (chip_ids[i].id == chip_id) break;
|
}
|
if (!chip_ids[i].id) {
|
netdev_err(dev, "Unknown chip ID %04x\n", chip_id);
|
retval = -ENODEV;
|
goto err_out;
|
}
|
version_string = chip_ids[i].name;
|
|
revision = SMC_GET_REV(lp);
|
DBG(SMC_DEBUG_MISC, dev, "%s: revision = 0x%04x\n", CARDNAME, revision);
|
|
/* At this point I'll assume that the chip is an SMC911x. */
|
DBG(SMC_DEBUG_MISC, dev, "%s: Found a %s\n",
|
CARDNAME, chip_ids[i].name);
|
|
/* Validate the TX FIFO size requested */
|
if ((tx_fifo_kb < 2) || (tx_fifo_kb > 14)) {
|
netdev_err(dev, "Invalid TX FIFO size requested %d\n",
|
tx_fifo_kb);
|
retval = -EINVAL;
|
goto err_out;
|
}
|
|
/* fill in some of the fields */
|
lp->version = chip_ids[i].id;
|
lp->revision = revision;
|
lp->tx_fifo_kb = tx_fifo_kb;
|
/* Reverse calculate the RX FIFO size from the TX */
|
lp->tx_fifo_size=(lp->tx_fifo_kb<<10) - 512;
|
lp->rx_fifo_size= ((0x4000 - 512 - lp->tx_fifo_size) / 16) * 15;
|
|
/* Set the automatic flow control values */
|
switch(lp->tx_fifo_kb) {
|
/*
|
* AFC_HI is about ((Rx Data Fifo Size)*2/3)/64
|
* AFC_LO is AFC_HI/2
|
* BACK_DUR is about 5uS*(AFC_LO) rounded down
|
*/
|
case 2:/* 13440 Rx Data Fifo Size */
|
lp->afc_cfg=0x008C46AF;break;
|
case 3:/* 12480 Rx Data Fifo Size */
|
lp->afc_cfg=0x0082419F;break;
|
case 4:/* 11520 Rx Data Fifo Size */
|
lp->afc_cfg=0x00783C9F;break;
|
case 5:/* 10560 Rx Data Fifo Size */
|
lp->afc_cfg=0x006E374F;break;
|
case 6:/* 9600 Rx Data Fifo Size */
|
lp->afc_cfg=0x0064328F;break;
|
case 7:/* 8640 Rx Data Fifo Size */
|
lp->afc_cfg=0x005A2D7F;break;
|
case 8:/* 7680 Rx Data Fifo Size */
|
lp->afc_cfg=0x0050287F;break;
|
case 9:/* 6720 Rx Data Fifo Size */
|
lp->afc_cfg=0x0046236F;break;
|
case 10:/* 5760 Rx Data Fifo Size */
|
lp->afc_cfg=0x003C1E6F;break;
|
case 11:/* 4800 Rx Data Fifo Size */
|
lp->afc_cfg=0x0032195F;break;
|
/*
|
* AFC_HI is ~1520 bytes less than RX Data Fifo Size
|
* AFC_LO is AFC_HI/2
|
* BACK_DUR is about 5uS*(AFC_LO) rounded down
|
*/
|
case 12:/* 3840 Rx Data Fifo Size */
|
lp->afc_cfg=0x0024124F;break;
|
case 13:/* 2880 Rx Data Fifo Size */
|
lp->afc_cfg=0x0015073F;break;
|
case 14:/* 1920 Rx Data Fifo Size */
|
lp->afc_cfg=0x0006032F;break;
|
default:
|
PRINTK(dev, "ERROR -- no AFC_CFG setting found");
|
break;
|
}
|
|
DBG(SMC_DEBUG_MISC | SMC_DEBUG_TX | SMC_DEBUG_RX, dev,
|
"%s: tx_fifo %d rx_fifo %d afc_cfg 0x%08x\n", CARDNAME,
|
lp->tx_fifo_size, lp->rx_fifo_size, lp->afc_cfg);
|
|
spin_lock_init(&lp->lock);
|
|
/* Get the MAC address */
|
SMC_GET_MAC_ADDR(lp, dev->dev_addr);
|
|
/* now, reset the chip, and put it into a known state */
|
smc911x_reset(dev);
|
|
/*
|
* If dev->irq is 0, then the device has to be banged on to see
|
* what the IRQ is.
|
*
|
* Specifying an IRQ is done with the assumption that the user knows
|
* what (s)he is doing. No checking is done!!!!
|
*/
|
if (dev->irq < 1) {
|
int trials;
|
|
trials = 3;
|
while (trials--) {
|
dev->irq = smc911x_findirq(dev);
|
if (dev->irq)
|
break;
|
/* kick the card and try again */
|
smc911x_reset(dev);
|
}
|
}
|
if (dev->irq == 0) {
|
netdev_warn(dev, "Couldn't autodetect your IRQ. Use irq=xx.\n");
|
retval = -ENODEV;
|
goto err_out;
|
}
|
dev->irq = irq_canonicalize(dev->irq);
|
|
dev->netdev_ops = &smc911x_netdev_ops;
|
dev->watchdog_timeo = msecs_to_jiffies(watchdog);
|
dev->ethtool_ops = &smc911x_ethtool_ops;
|
|
INIT_WORK(&lp->phy_configure, smc911x_phy_configure);
|
lp->mii.phy_id_mask = 0x1f;
|
lp->mii.reg_num_mask = 0x1f;
|
lp->mii.force_media = 0;
|
lp->mii.full_duplex = 0;
|
lp->mii.dev = dev;
|
lp->mii.mdio_read = smc911x_phy_read;
|
lp->mii.mdio_write = smc911x_phy_write;
|
|
/*
|
* Locate the phy, if any.
|
*/
|
smc911x_phy_detect(dev);
|
|
/* Set default parameters */
|
lp->msg_enable = NETIF_MSG_LINK;
|
lp->ctl_rfduplx = 1;
|
lp->ctl_rspeed = 100;
|
|
#ifdef SMC_DYNAMIC_BUS_CONFIG
|
irq_flags = lp->cfg.irq_flags;
|
#else
|
irq_flags = IRQF_SHARED | SMC_IRQ_SENSE;
|
#endif
|
|
/* Grab the IRQ */
|
retval = request_irq(dev->irq, smc911x_interrupt,
|
irq_flags, dev->name, dev);
|
if (retval)
|
goto err_out;
|
|
#ifdef SMC_USE_DMA
|
|
dma_cap_zero(mask);
|
dma_cap_set(DMA_SLAVE, mask);
|
lp->rxdma = dma_request_channel(mask, NULL, NULL);
|
lp->txdma = dma_request_channel(mask, NULL, NULL);
|
lp->rxdma_active = 0;
|
lp->txdma_active = 0;
|
|
memset(&config, 0, sizeof(config));
|
config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
|
config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
|
config.src_addr = lp->physaddr + RX_DATA_FIFO;
|
config.dst_addr = lp->physaddr + TX_DATA_FIFO;
|
config.src_maxburst = 32;
|
config.dst_maxburst = 32;
|
retval = dmaengine_slave_config(lp->rxdma, &config);
|
if (retval) {
|
dev_err(lp->dev, "dma rx channel configuration failed: %d\n",
|
retval);
|
goto err_out;
|
}
|
retval = dmaengine_slave_config(lp->txdma, &config);
|
if (retval) {
|
dev_err(lp->dev, "dma tx channel configuration failed: %d\n",
|
retval);
|
goto err_out;
|
}
|
#endif
|
|
retval = register_netdev(dev);
|
if (retval == 0) {
|
/* now, print out the card info, in a short format.. */
|
netdev_info(dev, "%s (rev %d) at %#lx IRQ %d",
|
version_string, lp->revision,
|
dev->base_addr, dev->irq);
|
|
#ifdef SMC_USE_DMA
|
if (lp->rxdma)
|
pr_cont(" RXDMA %p", lp->rxdma);
|
|
if (lp->txdma)
|
pr_cont(" TXDMA %p", lp->txdma);
|
#endif
|
pr_cont("\n");
|
if (!is_valid_ether_addr(dev->dev_addr)) {
|
netdev_warn(dev, "Invalid ethernet MAC address. Please set using ifconfig\n");
|
} else {
|
/* Print the Ethernet address */
|
netdev_info(dev, "Ethernet addr: %pM\n",
|
dev->dev_addr);
|
}
|
|
if (lp->phy_type == 0) {
|
PRINTK(dev, "No PHY found\n");
|
} else if ((lp->phy_type & ~0xff) == LAN911X_INTERNAL_PHY_ID) {
|
PRINTK(dev, "LAN911x Internal PHY\n");
|
} else {
|
PRINTK(dev, "External PHY 0x%08x\n", lp->phy_type);
|
}
|
}
|
|
err_out:
|
#ifdef SMC_USE_DMA
|
if (retval) {
|
if (lp->rxdma)
|
dma_release_channel(lp->rxdma);
|
if (lp->txdma)
|
dma_release_channel(lp->txdma);
|
}
|
#endif
|
return retval;
|
}
|
|
/*
|
* smc911x_drv_probe(void)
|
*
|
* Output:
|
* 0 --> there is a device
|
* anything else, error
|
*/
|
static int smc911x_drv_probe(struct platform_device *pdev)
|
{
|
struct net_device *ndev;
|
struct resource *res;
|
struct smc911x_local *lp;
|
void __iomem *addr;
|
int ret;
|
|
/* ndev is not valid yet, so avoid passing it in. */
|
DBG(SMC_DEBUG_FUNC, "--> %s\n", __func__);
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
if (!res) {
|
ret = -ENODEV;
|
goto out;
|
}
|
|
/*
|
* Request the regions.
|
*/
|
if (!request_mem_region(res->start, SMC911X_IO_EXTENT, CARDNAME)) {
|
ret = -EBUSY;
|
goto out;
|
}
|
|
ndev = alloc_etherdev(sizeof(struct smc911x_local));
|
if (!ndev) {
|
ret = -ENOMEM;
|
goto release_1;
|
}
|
SET_NETDEV_DEV(ndev, &pdev->dev);
|
|
ndev->dma = (unsigned char)-1;
|
ndev->irq = platform_get_irq(pdev, 0);
|
if (ndev->irq < 0) {
|
ret = ndev->irq;
|
goto release_both;
|
}
|
|
lp = netdev_priv(ndev);
|
lp->netdev = ndev;
|
#ifdef SMC_DYNAMIC_BUS_CONFIG
|
{
|
struct smc911x_platdata *pd = dev_get_platdata(&pdev->dev);
|
if (!pd) {
|
ret = -EINVAL;
|
goto release_both;
|
}
|
memcpy(&lp->cfg, pd, sizeof(lp->cfg));
|
}
|
#endif
|
|
addr = ioremap(res->start, SMC911X_IO_EXTENT);
|
if (!addr) {
|
ret = -ENOMEM;
|
goto release_both;
|
}
|
|
platform_set_drvdata(pdev, ndev);
|
lp->base = addr;
|
ndev->base_addr = res->start;
|
ret = smc911x_probe(ndev);
|
if (ret != 0) {
|
iounmap(addr);
|
release_both:
|
free_netdev(ndev);
|
release_1:
|
release_mem_region(res->start, SMC911X_IO_EXTENT);
|
out:
|
pr_info("%s: not found (%d).\n", CARDNAME, ret);
|
}
|
#ifdef SMC_USE_DMA
|
else {
|
lp->physaddr = res->start;
|
lp->dev = &pdev->dev;
|
}
|
#endif
|
|
return ret;
|
}
|
|
static int smc911x_drv_remove(struct platform_device *pdev)
|
{
|
struct net_device *ndev = platform_get_drvdata(pdev);
|
struct smc911x_local *lp = netdev_priv(ndev);
|
struct resource *res;
|
|
DBG(SMC_DEBUG_FUNC, ndev, "--> %s\n", __func__);
|
|
unregister_netdev(ndev);
|
|
free_irq(ndev->irq, ndev);
|
|
#ifdef SMC_USE_DMA
|
{
|
if (lp->rxdma)
|
dma_release_channel(lp->rxdma);
|
if (lp->txdma)
|
dma_release_channel(lp->txdma);
|
}
|
#endif
|
iounmap(lp->base);
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
release_mem_region(res->start, SMC911X_IO_EXTENT);
|
|
free_netdev(ndev);
|
return 0;
|
}
|
|
static int smc911x_drv_suspend(struct platform_device *dev, pm_message_t state)
|
{
|
struct net_device *ndev = platform_get_drvdata(dev);
|
struct smc911x_local *lp = netdev_priv(ndev);
|
|
DBG(SMC_DEBUG_FUNC, ndev, "--> %s\n", __func__);
|
if (ndev) {
|
if (netif_running(ndev)) {
|
netif_device_detach(ndev);
|
smc911x_shutdown(ndev);
|
#if POWER_DOWN
|
/* Set D2 - Energy detect only setting */
|
SMC_SET_PMT_CTRL(lp, 2<<12);
|
#endif
|
}
|
}
|
return 0;
|
}
|
|
static int smc911x_drv_resume(struct platform_device *dev)
|
{
|
struct net_device *ndev = platform_get_drvdata(dev);
|
|
DBG(SMC_DEBUG_FUNC, ndev, "--> %s\n", __func__);
|
if (ndev) {
|
struct smc911x_local *lp = netdev_priv(ndev);
|
|
if (netif_running(ndev)) {
|
smc911x_reset(ndev);
|
if (lp->phy_type != 0)
|
smc911x_phy_configure(&lp->phy_configure);
|
smc911x_enable(ndev);
|
netif_device_attach(ndev);
|
}
|
}
|
return 0;
|
}
|
|
static struct platform_driver smc911x_driver = {
|
.probe = smc911x_drv_probe,
|
.remove = smc911x_drv_remove,
|
.suspend = smc911x_drv_suspend,
|
.resume = smc911x_drv_resume,
|
.driver = {
|
.name = CARDNAME,
|
},
|
};
|
|
module_platform_driver(smc911x_driver);
|
