1050 lines
28 KiB
C
1050 lines
28 KiB
C
/* r6040.c: A RDC R6040 FastEthernet driver for linux. */
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/*
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Re-written 2004 by Sten Wang.
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Copyright 1994-2000 by Donald Becker.
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Copyright 1993 United States Government as represented by the
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Director, National Security Agency. This software may be used and
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distributed according to the terms of the GNU General Public License,
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incorporated herein by reference.
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This driver is for RDC R6040 FastEthernet MAC series.
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For kernel version after 2.4.22
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Modification List
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---------- ------------------------------------------------
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10-07-2007 Clean up the driver using checkpatch
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08-24-2006 Support at linux 2.6.10 above
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03-24-2006 Support NAPI
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03-21-2006 By Charies,change spin_lock_irqsave(lp->lock, flags)
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to spin_lock_irqsave(&lp->lock, flags)
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in set_multicast_list
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03-15-2006 Modify the set_multicast_list ,due to when re-plug the ethernet,
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it will forget the previous setting
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07-12-2005 Tim, modify the set_multicast_list
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03-28-2005 Tim, modify some error mac register offset in
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function set_multicast_list
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03-27-2005 Tim, Add the internal state machine reset
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Sten, If multicast address more than 4, enter PROM mode
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Changed rdc to r6040
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12-22-2004 Sten Init MAC MBCR register=0x012A
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PHY_CAP = 0x01E1
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Need to Do LIst:
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1. If multicast address more than 4, use the multicast address hash
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*/
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#define DRV_NAME "r6040"
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#define DRV_VERSION "0.13"
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#define DRV_RELDATE "24Aug2006"
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/* PHY CHIP Address */
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#define PHY1_ADDR 1 /* For MAC1 */
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#define PHY2_ADDR 2 /* For MAC2 */
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#define PHY_MODE 0x3100 /* PHY CHIP Register 0 */
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#define PHY_CAP 0x01E1 /* PHY CHIP Register 4 */
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/* Time in jiffies before concluding the transmitter is hung. */
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#define TX_TIMEOUT (6000 * HZ / 1000)
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#define TIMER_WUT (jiffies + HZ * 1)/* timer wakeup time : 1 second */
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/* RDC MAC ID */
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#define RDC_MAC_ID 0x6040
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/* RDC MAC I/O Size */
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#define R6040_IO_SIZE 256
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/* RDC Chip PCI Command */
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#define R6040_PCI_CMD 0x0005 /* IO, Master */
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/* MAX RDC MAC */
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#define MAX_MAC 2
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/* MAC setting */
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#define TX_DCNT 0x80 /* TX descriptor count */
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#define RX_DCNT 0x80 /* RX descriptor count */
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#define MAX_BUF_SIZE 0x600
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#define ALLOC_DESC_SIZE ((TX_DCNT+RX_DCNT)*sizeof(struct r6040_descriptor)+0x10)
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#define MBCR_DEFAULT 0x012A /* MAC Bus Control Register */
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/* PHY settings */
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#define ICPLUS_PHY_ID 0x0243
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/* Debug enable or not */
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#define RDC_DEBUG 0
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#if RDC_DEBUG > 1
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#define RDC_DBUG(msg, value) printk(KERN_ERR "%s %x\n", msg, value);
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#else
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#define RDC_DBUG(msg, value)
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#endif
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#include <linux/module.h>
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#include <linux/version.h>
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
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#include <linux/moduleparam.h>
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#endif
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/pci.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/init.h>
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#include <linux/delay.h>
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#include <linux/mii.h>
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#include <linux/ethtool.h>
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#include <linux/crc32.h>
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#include <linux/spinlock.h>
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#include <asm/processor.h>
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#include <asm/bitops.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/uaccess.h>
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MODULE_AUTHOR("Sten Wang <sten.wang@rdc.com.tw>, Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>, Florian Fainelli <florian@openwrt.org>");
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MODULE_LICENSE("GPL");
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#ifdef CONFIG_R6040_NAPI
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MODULE_DESCRIPTION("RDC R6040 NAPI PCI FastEthernet Driver");
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#else
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MODULE_DESCRIPTION("RDC R6040 PCI FastEthernet Driver");
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#endif
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#define R6040_INT_MASK 0x0011
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struct r6040_descriptor {
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u16 status, len; /* 0-3 */
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u32 buf; /* 4-7 */
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u32 ndesc; /* 8-B */
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u32 rev1; /* C-F */
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char *vbufp; /* 10-13 */
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struct r6040_descriptor *vndescp; /* 14-17 */
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struct sk_buff *skb_ptr; /* 18-1B */
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u32 rev2; /* 1C-1F */
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} __attribute__((aligned(32)));
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struct r6040_private {
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struct net_device_stats stats;
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spinlock_t lock; /* driver lock */
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struct timer_list timer;
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struct pci_dev *pdev;
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struct r6040_descriptor *rx_insert_ptr;
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struct r6040_descriptor *rx_remove_ptr;
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struct r6040_descriptor *tx_insert_ptr;
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struct r6040_descriptor *tx_remove_ptr;
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u16 tx_free_desc, rx_free_desc, phy_addr, phy_mode;
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u16 mcr0, mcr1;
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dma_addr_t desc_dma;
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char *desc_pool;
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u16 switch_sig;
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};
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struct r6040_chip_info {
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const char *name;
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u16 pci_flags;
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int io_size;
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int drv_flags;
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};
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#ifdef CONFIG_R6040_NAPI
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static int NAPI_status;
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#endif
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static int __devinitdata printed_version;
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#ifdef CONFIG_R6040_NAPI
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static char version[] __devinitdata =
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KERN_INFO DRV_NAME ": RDC R6040 NAPI net driver, version "DRV_VERSION " (" DRV_RELDATE ")\n";
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#else
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static char version[] __devinitdata =
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KERN_INFO DRV_NAME ": RDC R6040 net driver, version "DRV_VERSION " (" DRV_RELDATE ")\n";
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#endif
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static struct r6040_chip_info r6040_chip_info[] __devinitdata =
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{
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{ "RDC R6040 Knight", R6040_PCI_CMD, R6040_IO_SIZE, 0}
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};
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static char *parent;
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
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static int NUM_MAC_TABLE = 2 ;
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module_param(parent, charp, 0444);
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#else
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MODULE_PARM(parent, "s");
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#endif
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MODULE_PARM_DESC(parent, "Parent network device name");
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static int phy_table[] = { 0x1, 0x2};
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static u8 adr_table[2][8] = {
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{0x00, 0x00, 0x60, 0x00, 0x00, 0x01},
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{0x00, 0x00, 0x60, 0x00, 0x00, 0x02}
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};
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 10)
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module_param_array(adr_table, int, &NUM_MAC_TABLE, 0644);
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#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
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module_param_array(adr_table, int, NUM_MAC_TABLE, 0644);
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#else
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MODULE_PARM(adr_table, "2-4i");
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#endif
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MODULE_PARM_DESC(adr_table, "MAC Address (assigned)");
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static int r6040_open(struct net_device *dev);
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static int r6040_start_xmit(struct sk_buff *skb, struct net_device *dev);
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static irqreturn_t r6040_interrupt(int irq, void *dev_id);
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static struct net_device_stats *r6040_get_stats(struct net_device *dev);
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static int r6040_close(struct net_device *dev);
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static void set_multicast_list(struct net_device *dev);
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static struct ethtool_ops netdev_ethtool_ops;
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static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
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static void r6040_down(struct net_device *dev);
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static void r6040_up(struct net_device *dev);
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static void r6040_tx_timeout (struct net_device *dev);
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static void r6040_timer(unsigned long);
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static int phy_mode_chk(struct net_device *dev);
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static int phy_read(int ioaddr, int phy_adr, int reg_idx);
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static void phy_write(int ioaddr, int phy_adr, int reg_idx, int dat);
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static void rx_buf_alloc(struct r6040_private *lp, struct net_device *dev);
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#ifdef CONFIG_R6040_NAPI
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static int r6040_poll(struct net_device *netdev, int *budget);
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#endif
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static int __devinit r6040_init_one (struct pci_dev *pdev,
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const struct pci_device_id *ent)
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{
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struct net_device *dev;
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struct r6040_private *lp;
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int ioaddr, io_size, err;
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static int card_idx = -1;
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int chip_id = (int)ent->driver_data;
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RDC_DBUG("r6040_init_one()", 0);
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if (printed_version++)
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printk(KERN_INFO "%s\n", version);
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err = pci_enable_device(pdev);
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if (err)
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return err;
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/* this should always be supported */
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if (pci_set_dma_mask(pdev, 0xffffffff)) {
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printk(KERN_ERR DRV_NAME "32-bit PCI DMA addresses not supported by the card!?\n");
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return -ENODEV;
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}
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/* IO Size check */
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io_size = r6040_chip_info[chip_id].io_size;
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if (pci_resource_len (pdev, 0) < io_size) {
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return -ENODEV;
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}
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ioaddr = pci_resource_start (pdev, 0); /* IO map base address */
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pci_set_master(pdev);
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dev = alloc_etherdev(sizeof(struct r6040_private));
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if (dev == NULL)
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return -ENOMEM;
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SET_MODULE_OWNER(dev);
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if (pci_request_regions(pdev, DRV_NAME)) {
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printk(KERN_ERR DRV_NAME ": Failed to request PCI regions\n");
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err = -ENODEV;
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goto err_out_disable;
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}
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/* Init system & device */
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lp = dev->priv;
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dev->base_addr = ioaddr;
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dev->irq = pdev->irq;
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spin_lock_init(&lp->lock);
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pci_set_drvdata(pdev, dev);
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/* Set MAC address */
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card_idx++;
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memcpy(dev->dev_addr, (u8 *)&adr_table[card_idx][0], 6);
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/* Link new device into r6040_root_dev */
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lp->pdev = pdev;
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/* Init RDC private data */
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lp->mcr0 = 0x1002;
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lp->phy_addr = phy_table[card_idx];
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lp->switch_sig = 0;
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/* The RDC-specific entries in the device structure. */
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dev->open = &r6040_open;
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dev->hard_start_xmit = &r6040_start_xmit;
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dev->stop = &r6040_close;
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dev->get_stats = &r6040_get_stats;
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dev->set_multicast_list = &set_multicast_list;
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dev->do_ioctl = &netdev_ioctl;
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dev->ethtool_ops = &netdev_ethtool_ops;
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dev->tx_timeout = &r6040_tx_timeout;
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dev->watchdog_timeo = TX_TIMEOUT;
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#ifdef CONFIG_R6040_NAPI
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dev->poll = &r6040_poll;
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dev->weight = 64;
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#endif
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/* Register net device. After this dev->name assign */
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err = register_netdev(dev);
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if (err) {
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printk(KERN_ERR DRV_NAME ": Failed to register net device\n");
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goto err_out_res;
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}
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netif_carrier_on(dev);
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return 0;
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err_out_res:
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pci_release_regions(pdev);
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err_out_disable:
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pci_disable_device(pdev);
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pci_set_drvdata(pdev, NULL);
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kfree(dev);
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return err;
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}
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static void __devexit r6040_remove_one (struct pci_dev *pdev)
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{
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struct net_device *dev = pci_get_drvdata(pdev);
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unregister_netdev(dev);
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pci_release_regions(pdev);
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kfree(dev);
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pci_disable_device(pdev);
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pci_set_drvdata(pdev, NULL);
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}
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static int
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r6040_open(struct net_device *dev)
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{
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struct r6040_private *lp = dev->priv;
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int i;
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RDC_DBUG("r6040_open()", 0);
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/* Request IRQ and Register interrupt handler */
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i = request_irq(dev->irq, &r6040_interrupt, SA_SHIRQ, dev->name, dev);
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if (i) return i;
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/* Allocate Descriptor memory */
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lp->desc_pool = pci_alloc_consistent(lp->pdev, ALLOC_DESC_SIZE, &lp->desc_dma);
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if (!lp->desc_pool)
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return -ENOMEM;
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r6040_up(dev);
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netif_start_queue(dev);
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if (lp->switch_sig != ICPLUS_PHY_ID) {
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/* set and active a timer process */
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init_timer(&lp->timer);
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lp->timer.expires = TIMER_WUT;
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lp->timer.data = (unsigned long)dev;
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lp->timer.function = &r6040_timer;
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add_timer(&lp->timer);
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}
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return 0;
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}
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static void
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r6040_tx_timeout (struct net_device *dev)
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{
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struct r6040_private *lp = dev->priv;
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/* int ioaddr = dev->base_addr;
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struct r6040_descriptor *descptr = lp->tx_remove_ptr; */
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RDC_DBUG("r6040_tx_timeout()", 0);
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/* Transmitter timeout, serious problems. */
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/* Sten: Nothing need to do so far. */
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printk(KERN_ERR DRV_NAME ": Big Trobule, transmit timeout/n");
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lp->stats.tx_errors++;
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netif_stop_queue(dev);
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//printk("<RDC> XMT timedout: CR0 %x, CR40 %x, CR3C %x, CR2C %x, CR30 %x, CR34 %x, CR38 %x\n", inw(ioaddr), inw(ioaddr+0x40), inw(ioaddr+0x3c), inw(ioaddr+0x2c), inw(ioaddr+0x30), inw(ioaddr+0x34), inw(ioaddr+0x38));
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//printk("<RDC> XMT_TO: %08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp);
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}
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static int
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r6040_start_xmit(struct sk_buff *skb, struct net_device *dev)
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{
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struct r6040_private *lp = dev->priv;
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struct r6040_descriptor *descptr;
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int ioaddr = dev->base_addr;
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unsigned long flags;
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RDC_DBUG("r6040_start_xmit()", 0);
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if (skb == NULL) /* NULL skb directly return */
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return 0;
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if (skb->len >= MAX_BUF_SIZE) { /* Packet too long, drop it */
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dev_kfree_skb(skb);
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return 0;
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}
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/* Critical Section */
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spin_lock_irqsave(&lp->lock, flags);
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/* TX resource check */
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if (!lp->tx_free_desc) {
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spin_unlock_irqrestore(&lp->lock, flags);
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printk(KERN_ERR DRV_NAME ": NO TX DESC ");
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return 1;
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}
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/* Statistic Counter */
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lp->stats.tx_packets++;
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lp->stats.tx_bytes += skb->len;
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/* Set TX descriptor & Transmit it */
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lp->tx_free_desc--;
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descptr = lp->tx_insert_ptr;
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if (skb->len < 0x3c)
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descptr->len = 0x3c;
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else
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descptr->len = skb->len;
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descptr->skb_ptr = skb;
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descptr->buf = cpu_to_le32(pci_map_single(lp->pdev, skb->data, skb->len, PCI_DMA_TODEVICE));
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descptr->status = 0x8000;
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outw(0x01, ioaddr + 0x14);
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lp->tx_insert_ptr = descptr->vndescp;
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#if RDC_DEBUG
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printk("Xmit(): %08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp);
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#endif
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/* If no tx resource, stop */
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if (!lp->tx_free_desc)
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netif_stop_queue(dev);
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dev->trans_start = jiffies;
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spin_unlock_irqrestore(&lp->lock, flags);
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return 0;
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}
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/* The RDC interrupt handler. */
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static irqreturn_t
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r6040_interrupt(int irq, void *dev_id)
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{
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struct net_device *dev = dev_id;
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struct r6040_private *lp;
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struct r6040_descriptor *descptr;
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struct sk_buff *skb_ptr;
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int ioaddr, status;
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unsigned long flags;
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#ifdef CONFIG_R6040_NAPI
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int handled = 1;
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#else
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int handled = 0;
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#endif
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RDC_DBUG("r6040_interrupt()", 0);
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if (dev == NULL) {
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printk (KERN_ERR DRV_NAME ": INT() unknown device.\n");
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return IRQ_RETVAL(handled);
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}
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lp = (struct r6040_private *)dev->priv;
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spin_lock_irqsave(&lp->lock, flags);
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/* Check MAC Interrupt status */
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ioaddr = dev->base_addr;
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outw(0x0, ioaddr + 0x40); /* Mask Off RDC MAC interrupt */
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status = inw(ioaddr + 0x3c); /* Read INTR status and clear */
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#ifdef CONFIG_R6040_NAPI
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if (netif_rx_schedule_prep(dev)) {
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NAPI_status = status;
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__netif_rx_schedule(dev);
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}
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spin_unlock_irqrestore(&lp->lock, flags);
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return IRQ_RETVAL(handled);
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#else
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/* TX interrupt request */
|
|
if (status & 0x10) {
|
|
handled = 1;
|
|
descptr = lp->tx_remove_ptr;
|
|
while (lp->tx_free_desc < TX_DCNT) {
|
|
if (descptr->status & 0x8000)
|
|
break; /* Not complte */
|
|
skb_ptr = descptr->skb_ptr;
|
|
pci_unmap_single(lp->pdev, descptr->buf, skb_ptr->len, PCI_DMA_TODEVICE);
|
|
dev_kfree_skb_irq(skb_ptr); /* Free buffer */
|
|
descptr->skb_ptr = 0;
|
|
descptr = descptr->vndescp; /* To next descriptor */
|
|
lp->tx_free_desc++;
|
|
}
|
|
lp->tx_remove_ptr = descptr;
|
|
if (lp->tx_free_desc)
|
|
netif_wake_queue(dev);
|
|
}
|
|
|
|
/* RX interrupt request */
|
|
if (status & 0x01) {
|
|
handled = 1;
|
|
descptr = lp->rx_remove_ptr;
|
|
while(lp->rx_free_desc) {
|
|
if (descptr->status & 0x8000) break; /* No Rx packet */
|
|
skb_ptr = descptr->skb_ptr;
|
|
descptr->skb_ptr = 0;
|
|
skb_ptr->dev = dev;
|
|
skb_put(skb_ptr, descptr->len - 4);
|
|
pci_unmap_single(lp->pdev, descptr->buf, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
|
|
skb_ptr->protocol = eth_type_trans(skb_ptr, dev);
|
|
netif_rx(skb_ptr); /* Send to upper layer */
|
|
lp->stats.rx_packets++;
|
|
lp->stats.rx_bytes += descptr->len;
|
|
descptr = descptr->vndescp; /* To next descriptor */
|
|
lp->rx_free_desc--;
|
|
}
|
|
lp->rx_remove_ptr = descptr;
|
|
}
|
|
|
|
/* Allocate new RX buffer */
|
|
if (lp->rx_free_desc < RX_DCNT) rx_buf_alloc(lp,dev);
|
|
|
|
outw(R6040_INT_MASK, ioaddr + 0x40); /* TX/RX interrupt enable */
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
#endif
|
|
return IRQ_RETVAL(handled);
|
|
}
|
|
|
|
|
|
static struct net_device_stats *
|
|
r6040_get_stats(struct net_device *dev)
|
|
{
|
|
struct r6040_private *lp = dev->priv;
|
|
|
|
RDC_DBUG("r6040_get_stats()", 0);
|
|
return &lp->stats;
|
|
}
|
|
|
|
/*
|
|
* Set or clear the multicast filter for this adaptor.
|
|
*/
|
|
static void
|
|
set_multicast_list(struct net_device *dev)
|
|
{
|
|
struct r6040_private *lp = dev->priv;
|
|
struct dev_mc_list *mcptr;
|
|
int ioaddr = dev->base_addr;
|
|
u16 *adrp, i;
|
|
unsigned long flags;
|
|
|
|
RDC_DBUG("set_multicast_list()", 0);
|
|
|
|
/* MAC Address */
|
|
adrp = (u16 *) dev->dev_addr;
|
|
outw(adrp[0], ioaddr + 0x68);
|
|
outw(adrp[1], ioaddr + 0x6A);
|
|
outw(adrp[2], ioaddr + 0x6C);
|
|
|
|
|
|
#if RDC_DEBUG
|
|
printk("MAC ADDR: %04x %04x %04x\n", adrp[0], adrp[1], adrp[2]);
|
|
#endif
|
|
|
|
/* Promiscous Mode */
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
i = inw(ioaddr) & ~0x0120; /* Clear AMCP & PROM */
|
|
if (dev->flags & IFF_PROMISC) {
|
|
i |= 0x0020;
|
|
lp->mcr0 |= 0x0020;
|
|
}
|
|
if (dev->mc_count > 4)
|
|
i |= 0x0020; /* Too many multicast address */
|
|
|
|
outw(i, ioaddr);
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
|
|
/* Multicast Address */
|
|
if (dev->mc_count > 4) /* Wait to do: Hash Table for multicast */
|
|
return;
|
|
|
|
/* Multicast Address 1~4 case */
|
|
for (i = 0, mcptr = dev->mc_list; (i < dev->mc_count) && (i < 4); i++) {
|
|
adrp = (u16 *)mcptr->dmi_addr;
|
|
outw(adrp[0], ioaddr + 0x70 + 8*i);
|
|
outw(adrp[1], ioaddr + 0x72 + 8*i);
|
|
outw(adrp[2], ioaddr + 0x74 + 8*i);
|
|
mcptr = mcptr->next;
|
|
#if RDC_DEBUG
|
|
printk("M_ADDR: %04x %04x %04x\n", adrp[0], adrp[1], adrp[2]);
|
|
#endif
|
|
}
|
|
for (i = dev->mc_count; i < 4; i++) {
|
|
outw(0xffff, ioaddr + 0x68 + 8*i);
|
|
outw(0xffff, ioaddr + 0x6A + 8*i);
|
|
outw(0xffff, ioaddr + 0x6C + 8*i);
|
|
}
|
|
}
|
|
|
|
static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
|
|
{
|
|
struct r6040_private *rp = dev->priv;
|
|
|
|
strcpy (info->driver, DRV_NAME);
|
|
strcpy (info->version, DRV_VERSION);
|
|
strcpy (info->bus_info, pci_name(rp->pdev));
|
|
}
|
|
|
|
static struct ethtool_ops netdev_ethtool_ops = {
|
|
.get_drvinfo = netdev_get_drvinfo,
|
|
};
|
|
|
|
static int
|
|
r6040_close(struct net_device *dev)
|
|
{
|
|
struct r6040_private *lp = dev->priv;
|
|
|
|
RDC_DBUG("r6040_close()", 0);
|
|
|
|
/* deleted timer */
|
|
del_timer_sync(&lp->timer);
|
|
|
|
spin_lock_irq(&lp->lock);
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
r6040_down(dev);
|
|
|
|
spin_unlock_irq(&lp->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
|
|
{
|
|
struct r6040_private *lp = dev->priv;
|
|
|
|
RDC_DBUG("netdev_ioctl()", 0);
|
|
|
|
if (lp->switch_sig == ICPLUS_PHY_ID && cmd == SIOCDEVPRIVATE) {
|
|
unsigned long *data = (unsigned long *)rq->ifr_data, args[4];
|
|
int ioaddr = dev->base_addr;
|
|
unsigned int val;
|
|
|
|
data = (unsigned long *)rq->ifr_data;
|
|
if (copy_from_user(args, data, 4*sizeof(unsigned long)))
|
|
return -EFAULT;
|
|
|
|
/* port priority */
|
|
if(args[0]&(1<<31))phy_write(ioaddr, 29, 19, (phy_read(ioaddr, 29, 19) | 0x2000)); /* port 0 */
|
|
if(args[0]&(1<<29))phy_write(ioaddr, 29, 19, (phy_read(ioaddr, 29, 19) | 0x0020)); /* port 1 */
|
|
if(args[0]&(1<<27))phy_write(ioaddr, 29, 20, (phy_read(ioaddr, 29, 20) | 0x2000)); /* port 2 */
|
|
if(args[0]&(1<<25))phy_write(ioaddr, 29, 20, (phy_read(ioaddr, 29, 20) | 0x0020)); /* port 3 */
|
|
|
|
}
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
/**
|
|
Stop RDC MAC and Free the allocated resource
|
|
*/
|
|
static void r6040_down(struct net_device *dev)
|
|
{
|
|
struct r6040_private *lp = dev->priv;
|
|
int i;
|
|
int ioaddr = dev->base_addr;
|
|
|
|
RDC_DBUG("r6040_down()", 0);
|
|
|
|
/* Stop MAC */
|
|
outw(0x0000, ioaddr + 0x40); /* Mask Off Interrupt */
|
|
outw(0x0001, ioaddr + 0x04); /* Reset RDC MAC */
|
|
i = 0;
|
|
do{}while((i++ < 2048) && (inw(ioaddr + 0x04) & 0x1));
|
|
|
|
free_irq(dev->irq, dev);
|
|
|
|
/* Free RX buffer */
|
|
for (i = 0; i < RX_DCNT; i++) {
|
|
if (lp->rx_insert_ptr->skb_ptr) {
|
|
pci_unmap_single(lp->pdev, lp->rx_insert_ptr->buf, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
|
|
dev_kfree_skb(lp->rx_insert_ptr->skb_ptr);
|
|
lp->rx_insert_ptr->skb_ptr = 0;
|
|
}
|
|
lp->rx_insert_ptr = lp->rx_insert_ptr->vndescp;
|
|
}
|
|
|
|
/* Free TX buffer */
|
|
for (i = 0; i < TX_DCNT; i++) {
|
|
if (lp->tx_insert_ptr->skb_ptr) {
|
|
pci_unmap_single(lp->pdev, lp->tx_insert_ptr->buf, MAX_BUF_SIZE, PCI_DMA_TODEVICE);
|
|
dev_kfree_skb(lp->tx_insert_ptr->skb_ptr);
|
|
lp->rx_insert_ptr->skb_ptr = 0;
|
|
}
|
|
lp->tx_insert_ptr = lp->tx_insert_ptr->vndescp;
|
|
}
|
|
|
|
/* Free Descriptor memory */
|
|
pci_free_consistent(lp->pdev, ALLOC_DESC_SIZE, lp->desc_pool, lp->desc_dma);
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_R6040_NAPI
|
|
static int r6040_poll(struct net_device *dev, int *budget)
|
|
{
|
|
struct r6040_private *lp;
|
|
struct r6040_descriptor *descptr;
|
|
struct sk_buff *skb_ptr;
|
|
int ioaddr, status;
|
|
unsigned long flags;
|
|
|
|
|
|
ioaddr = dev->base_addr;
|
|
lp = (struct r6040_private *)dev->priv;
|
|
unsigned long rx_work = dev->quota;
|
|
unsigned long rx;
|
|
#if 1
|
|
/* TX interrupt request */
|
|
if (NAPI_status & 0x10) {
|
|
descptr = lp->tx_remove_ptr;
|
|
while (lp->tx_free_desc < TX_DCNT) {
|
|
if (descptr->status & 0x8000)
|
|
break; /* Not complte */
|
|
|
|
skb_ptr = descptr->skb_ptr;
|
|
pci_unmap_single(lp->pdev, descptr->buf, skb_ptr->len, PCI_DMA_TODEVICE);
|
|
dev_kfree_skb_irq(skb_ptr); /* Free buffer */
|
|
descptr->skb_ptr = 0;
|
|
descptr = descptr->vndescp; /* To next descriptor */
|
|
lp->tx_free_desc++;
|
|
}
|
|
lp->tx_remove_ptr = descptr;
|
|
if (lp->tx_free_desc) netif_wake_queue(dev);
|
|
}
|
|
#endif
|
|
#if 1
|
|
/* RX interrupt request */
|
|
if (NAPI_status & 0x01) {
|
|
descptr = lp->rx_remove_ptr;
|
|
while (lp->rx_free_desc) {
|
|
if (descptr->status & 0x8000)
|
|
break; /* No Rx packet */
|
|
skb_ptr = descptr->skb_ptr;
|
|
descptr->skb_ptr = 0;
|
|
skb_ptr->dev = dev;
|
|
skb_put(skb_ptr, descptr->len - 4);
|
|
pci_unmap_single(lp->pdev, descptr->buf, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
|
|
skb_ptr->protocol = eth_type_trans(skb_ptr, dev);
|
|
netif_receive_skb(skb_ptr); /* Send to upper layer */
|
|
lp->stats.rx_packets++;
|
|
lp->stats.rx_bytes += descptr->len;
|
|
descptr = descptr->vndescp; /* To next descriptor */
|
|
lp->rx_free_desc--;
|
|
}
|
|
lp->rx_remove_ptr = descptr;
|
|
}
|
|
/* Allocate new RX buffer */
|
|
if (lp->rx_free_desc < RX_DCNT)
|
|
rx_buf_alloc(lp, dev);
|
|
|
|
local_irq_disable();
|
|
netif_rx_complete(dev);
|
|
outw(R6040_INT_MASK, ioaddr + 0x40);
|
|
local_irq_enable();
|
|
return 0;
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
/* Init RDC MAC */
|
|
static void r6040_up(struct net_device *dev)
|
|
{
|
|
struct r6040_private *lp = dev->priv;
|
|
struct r6040_descriptor *descptr;
|
|
int i;
|
|
int ioaddr = dev->base_addr;
|
|
u32 tmp_addr;
|
|
dma_addr_t desc_dma, start_dma;
|
|
|
|
RDC_DBUG("r6040_up()", 0);
|
|
|
|
/* Initilize */
|
|
lp->tx_free_desc = TX_DCNT;
|
|
lp->rx_free_desc = 0;
|
|
|
|
/* Init descriptor */
|
|
memset(lp->desc_pool, 0, ALLOC_DESC_SIZE); /* Let all descriptor = 0 */
|
|
lp->tx_insert_ptr = (struct r6040_descriptor *)lp->desc_pool;
|
|
lp->tx_remove_ptr = lp->tx_insert_ptr;
|
|
lp->rx_insert_ptr = (struct r6040_descriptor *)lp->tx_insert_ptr+TX_DCNT;
|
|
lp->rx_remove_ptr = lp->rx_insert_ptr;
|
|
|
|
/* Init TX descriptor */
|
|
descptr = lp->tx_insert_ptr;
|
|
desc_dma = lp->desc_dma;
|
|
start_dma = desc_dma;
|
|
for (i = 0; i < TX_DCNT; i++) {
|
|
descptr->ndesc = cpu_to_le32(desc_dma + sizeof(struct r6040_descriptor));
|
|
descptr->vndescp = (descptr + 1);
|
|
descptr = (descptr + 1);
|
|
desc_dma += sizeof(struct r6040_descriptor);
|
|
}
|
|
(descptr - 1)->ndesc = cpu_to_le32(start_dma);
|
|
(descptr - 1)->vndescp = lp->tx_insert_ptr;
|
|
|
|
/* Init RX descriptor */
|
|
start_dma = desc_dma;
|
|
descptr = lp->rx_insert_ptr;
|
|
for (i = 0; i < RX_DCNT; i++) {
|
|
descptr->ndesc = cpu_to_le32(desc_dma + sizeof(struct r6040_descriptor));
|
|
descptr->vndescp = (descptr + 1);
|
|
descptr = (descptr + 1);
|
|
desc_dma += sizeof(struct r6040_descriptor);
|
|
}
|
|
(descptr - 1)->ndesc = cpu_to_le32(start_dma);
|
|
(descptr - 1)->vndescp = lp->rx_insert_ptr;
|
|
|
|
/* Allocate buffer for RX descriptor */
|
|
rx_buf_alloc(lp, dev);
|
|
|
|
#if RDC_DEBUG
|
|
descptr = lp->tx_insert_ptr;
|
|
for (i = 0; i < TX_DCNT; i++) {
|
|
printk("%08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp);
|
|
descptr = descptr->vndescp;
|
|
}
|
|
descptr = lp->rx_insert_ptr;
|
|
for (i = 0; i < RX_DCNT; i++) {
|
|
printk("%08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp);
|
|
descptr = descptr->vndescp;
|
|
}
|
|
#endif
|
|
|
|
/* MAC operation register */
|
|
outw(0x01, ioaddr+0x04); /* Reset MAC */
|
|
outw(2, ioaddr+0xAC); /* Reset internal state machine */
|
|
outw(0, ioaddr+0xAC);
|
|
udelay(5000);
|
|
|
|
/* TX and RX descriptor start Register */
|
|
tmp_addr = cpu_to_le32(lp->tx_insert_ptr);
|
|
tmp_addr = virt_to_bus((volatile void *)tmp_addr);
|
|
outw((u16) tmp_addr, ioaddr+0x2c);
|
|
outw(tmp_addr >> 16, ioaddr+0x30);
|
|
tmp_addr = cpu_to_le32(lp->rx_insert_ptr);
|
|
tmp_addr = virt_to_bus((volatile void *)tmp_addr);
|
|
outw((u16) tmp_addr, ioaddr+0x34);
|
|
outw(tmp_addr >> 16, ioaddr+0x38);
|
|
|
|
/* Buffer Size Register */
|
|
outw(MAX_BUF_SIZE, ioaddr+0x18);
|
|
|
|
if ((lp->switch_sig = phy_read(ioaddr, 0, 2)) == ICPLUS_PHY_ID) {
|
|
phy_write(ioaddr, 29,31, 0x175C); /* Enable registers */
|
|
lp->phy_mode = 0x8000;
|
|
} else {
|
|
/* PHY Mode Check */
|
|
phy_write(ioaddr, lp->phy_addr, 4, PHY_CAP);
|
|
phy_write(ioaddr, lp->phy_addr, 0, PHY_MODE);
|
|
|
|
if (PHY_MODE == 0x3100)
|
|
lp->phy_mode = phy_mode_chk(dev);
|
|
else
|
|
lp->phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0;
|
|
}
|
|
/* MAC Bus Control Register */
|
|
outw(MBCR_DEFAULT, ioaddr+0x8);
|
|
|
|
/* MAC TX/RX Enable */
|
|
lp->mcr0 |= lp->phy_mode;
|
|
outw(lp->mcr0, ioaddr);
|
|
|
|
/* set interrupt waiting time and packet numbers */
|
|
outw(0x0802, ioaddr + 0x0C);
|
|
outw(0x0802, ioaddr + 0x10);
|
|
|
|
/* upgrade performance (by RDC guys) */
|
|
phy_write(ioaddr, 30, 17, (phy_read(ioaddr, 30, 17) | 0x4000)); //bit 14=1
|
|
phy_write(ioaddr, 30, 17, ~((~phy_read(ioaddr, 30, 17)) | 0x2000)); //bit 13=0
|
|
phy_write(ioaddr, 0, 19, 0x0000);
|
|
phy_write(ioaddr, 0, 30, 0x01F0);
|
|
|
|
/* Interrupt Mask Register */
|
|
outw(R6040_INT_MASK, ioaddr + 0x40);
|
|
}
|
|
|
|
/*
|
|
A periodic timer routine
|
|
Polling PHY Chip Link Status
|
|
*/
|
|
static void r6040_timer(unsigned long data)
|
|
{
|
|
struct net_device *dev = (struct net_device *)data;
|
|
struct r6040_private *lp = dev->priv;
|
|
u16 ioaddr = dev->base_addr, phy_mode;
|
|
|
|
RDC_DBUG("r6040_timer()", 0);
|
|
|
|
/* Polling PHY Chip Status */
|
|
if (PHY_MODE == 0x3100)
|
|
phy_mode = phy_mode_chk(dev);
|
|
else
|
|
phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0;
|
|
|
|
if (phy_mode != lp->phy_mode) {
|
|
lp->phy_mode = phy_mode;
|
|
lp->mcr0 = (lp->mcr0 & 0x7fff) | phy_mode;
|
|
outw(lp->mcr0, ioaddr);
|
|
printk(KERN_INFO "Link Change %x \n", inw(ioaddr));
|
|
}
|
|
|
|
/* Debug */
|
|
// printk("<RDC> Timer: CR0 %x CR40 %x CR3C %x\n", inw(ioaddr), inw(ioaddr+0x40), inw(ioaddr+0x3c));
|
|
|
|
/* Timer active again */
|
|
lp->timer.expires = TIMER_WUT;
|
|
add_timer(&lp->timer);
|
|
}
|
|
|
|
/* Allocate skb buffer for rx descriptor */
|
|
static void rx_buf_alloc(struct r6040_private *lp, struct net_device *dev)
|
|
{
|
|
struct r6040_descriptor *descptr;
|
|
int ioaddr = dev->base_addr ;
|
|
|
|
RDC_DBUG("rx_buf_alloc()", 0);
|
|
|
|
descptr = lp->rx_insert_ptr;
|
|
while (lp->rx_free_desc < RX_DCNT) {
|
|
descptr->skb_ptr = dev_alloc_skb(MAX_BUF_SIZE);
|
|
|
|
if (!descptr->skb_ptr)
|
|
break;
|
|
descptr->buf = cpu_to_le32(pci_map_single(lp->pdev, descptr->skb_ptr->tail, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE));
|
|
descptr->status = 0x8000;
|
|
descptr = descptr->vndescp;
|
|
lp->rx_free_desc++;
|
|
outw(lp->mcr0 | 0x0002, ioaddr); /* Trigger Rx DMA */
|
|
}
|
|
lp->rx_insert_ptr = descptr;
|
|
}
|
|
|
|
/* Status of PHY CHIP */
|
|
static int phy_mode_chk(struct net_device *dev)
|
|
{
|
|
struct r6040_private *lp = dev->priv;
|
|
int ioaddr = dev->base_addr, phy_dat;
|
|
|
|
RDC_DBUG("phy_mode_chk()", 0);
|
|
|
|
/* PHY Link Status Check */
|
|
phy_dat = phy_read(ioaddr, lp->phy_addr, 1);
|
|
if (!(phy_dat & 0x4))
|
|
return 0x8000; /* Link Failed, full duplex */
|
|
|
|
/* PHY Chip Auto-Negotiation Status */
|
|
phy_dat = phy_read(ioaddr, lp->phy_addr, 1);
|
|
if (phy_dat & 0x0020) {
|
|
/* Auto Negotiation Mode */
|
|
phy_dat = phy_read(ioaddr, lp->phy_addr, 5);
|
|
phy_dat &= phy_read(ioaddr, lp->phy_addr, 4);
|
|
if (phy_dat & 0x140)
|
|
phy_dat = 0x8000;
|
|
else
|
|
phy_dat = 0;
|
|
} else {
|
|
/* Force Mode */
|
|
phy_dat = phy_read(ioaddr, lp->phy_addr, 0);
|
|
if (phy_dat & 0x100) phy_dat = 0x8000;
|
|
else phy_dat = 0x0000;
|
|
}
|
|
|
|
return phy_dat;
|
|
};
|
|
|
|
/* Read a word data from PHY Chip */
|
|
static int phy_read(int ioaddr, int phy_addr, int reg_idx)
|
|
{
|
|
int i = 0;
|
|
|
|
RDC_DBUG("phy_read()", 0);
|
|
outw(0x2000 + reg_idx + (phy_addr << 8), ioaddr + 0x20);
|
|
do {} while ((i++ < 2048) && (inw(ioaddr + 0x20) & 0x2000));
|
|
|
|
return inw(ioaddr + 0x24);
|
|
}
|
|
|
|
/* Write a word data from PHY Chip */
|
|
static void phy_write(int ioaddr, int phy_addr, int reg_idx, int dat)
|
|
{
|
|
int i = 0;
|
|
|
|
RDC_DBUG("phy_write()", 0);
|
|
outw(dat, ioaddr + 0x28);
|
|
outw(0x4000 + reg_idx + (phy_addr << 8), ioaddr + 0x20);
|
|
do{}while( (i++ < 2048) && (inw(ioaddr + 0x20) & 0x4000) );
|
|
}
|
|
|
|
enum {
|
|
RDC_6040 = 0
|
|
};
|
|
|
|
static struct pci_device_id r6040_pci_tbl[] = {
|
|
{0x17F3, 0x6040, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RDC_6040},
|
|
/* {PCI_VENDOR_ID_RDC, PCI_DEVICE_ID_R6040, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RDC_6040},*/
|
|
/*{0x1106, 0x3065, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RDC_6040},*/
|
|
{0,}
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, r6040_pci_tbl);
|
|
|
|
static struct pci_driver r6040_driver = {
|
|
.name = "r6040",
|
|
.id_table = r6040_pci_tbl,
|
|
.probe = r6040_init_one,
|
|
.remove = __devexit_p(r6040_remove_one),
|
|
};
|
|
|
|
|
|
static int __init r6040_init (void)
|
|
{
|
|
RDC_DBUG("r6040_init()", 0);
|
|
|
|
printk(KERN_INFO "%s\n", version);
|
|
printed_version = 1;
|
|
|
|
if (parent != NULL) {
|
|
struct net_device *the_parent = dev_get_by_name(parent);
|
|
|
|
if (the_parent == NULL) {
|
|
printk (KERN_ERR DRV_NAME ": Unknown device \"%s\" specified.\n", parent);
|
|
return -EINVAL;
|
|
}
|
|
memcpy((u8 *)&adr_table[0][0], the_parent->dev_addr, 6);
|
|
memcpy((u8 *)&adr_table[1][0], the_parent->dev_addr, 6);
|
|
++*(u8 *)&adr_table[0][5];
|
|
}
|
|
return pci_register_driver (&r6040_driver);
|
|
}
|
|
|
|
|
|
static void __exit r6040_cleanup (void)
|
|
{
|
|
RDC_DBUG("r6040_cleanup()", 0);
|
|
pci_unregister_driver (&r6040_driver);
|
|
}
|
|
|
|
module_init(r6040_init);
|
|
module_exit(r6040_cleanup);
|