/*
A Davicom DM9102/DM9102A/DM9102A+DM9801/DM9102A+DM9802 NIC fast
ethernet driver for Linux.
Copyright (C) 1997 Sten Wang
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
DAVICOM Web-Site: www.davicom.com.tw
Author: Sten Wang, 886-3-5798797-8517, E-mail: sten_wang@davicom.com.tw
Maintainer: Tobias Ringstrom <tori@unhappy.mine.nu>
(C)Copyright 1997-1998 DAVICOM Semiconductor,Inc. All Rights Reserved.
Marcelo Tosatti <marcelo@conectiva.com.br> :
Made it compile in 2.3 (device to net_device)
Alan Cox <alan@redhat.com> :
Cleaned up for kernel merge.
Removed the back compatibility support
Reformatted, fixing spelling etc as I went
Removed IRQ 0-15 assumption
Jeff Garzik <jgarzik@pobox.com> :
Updated to use new PCI driver API.
Resource usage cleanups.
Report driver version to user.
Tobias Ringstrom <tori@unhappy.mine.nu> :
Cleaned up and added SMP safety. Thanks go to Jeff Garzik,
Andrew Morton and Frank Davis for the SMP safety fixes.
Vojtech Pavlik <vojtech@suse.cz> :
Cleaned up pointer arithmetics.
Fixed a lot of 64bit issues.
Cleaned up printk()s a bit.
Fixed some obvious big endian problems.
Tobias Ringstrom <tori@unhappy.mine.nu> :
Use time_after for jiffies calculation. Added ethtool
support. Updated PCI resource allocation. Do not
forget to unmap PCI mapped skbs.
Alan Cox <alan@redhat.com>
Added new PCI identifiers provided by Clear Zhang at ALi
for their 1563 ethernet device.
TODO
Implement pci_driver::suspend() and pci_driver::resume()
power management methods.
Check on 64 bit boxes.
Check and fix on big endian boxes.
Test and make sure PCI latency is now correct for all cases.
*/
#define DRV_NAME "dmfe"
#define DRV_VERSION "1.36.4"
#define DRV_RELDATE "2002-01-17"
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/ptrace.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/skbuff.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/crc32.h>
#include <linux/bitops.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <asm/dma.h>
#include <asm/uaccess.h>
#include <asm/irq.h>
/* Board/System/Debug information/definition ---------------- */
#define PCI_DM9132_ID 0x91321282 /* Davicom DM9132 ID */
#define PCI_DM9102_ID 0x91021282 /* Davicom DM9102 ID */
#define PCI_DM9100_ID 0x91001282 /* Davicom DM9100 ID */
#define PCI_DM9009_ID 0x90091282 /* Davicom DM9009 ID */
#define DM9102_IO_SIZE 0x80
#define DM9102A_IO_SIZE 0x100
#define TX_MAX_SEND_CNT 0x1 /* Maximum tx packet per time */
#define TX_DESC_CNT 0x10 /* Allocated Tx descriptors */
#define RX_DESC_CNT 0x20 /* Allocated Rx descriptors */
#define TX_FREE_DESC_CNT (TX_DESC_CNT - 2) /* Max TX packet count */
#define TX_WAKE_DESC_CNT (TX_DESC_CNT - 3) /* TX wakeup count */
#define DESC_ALL_CNT (TX_DESC_CNT + RX_DESC_CNT)
#define TX_BUF_ALLOC 0x600
#define RX_ALLOC_SIZE 0x620
#define DM910X_RESET 1
#define CR0_DEFAULT 0x00E00000 /* TX & RX burst mode */
#define CR6_DEFAULT 0x00080000 /* HD */
#define CR7_DEFAULT 0x180c1
#define CR15_DEFAULT 0x06 /* TxJabber RxWatchdog */
#define TDES0_ERR_MASK 0x4302 /* TXJT, LC, EC, FUE */
#define MAX_PACKET_SIZE 1514
#define DMFE_MAX_MULTICAST 14
#define RX_COPY_SIZE 100
#define MAX_CHECK_PACKET 0x8000
#define DM9801_NOISE_FLOOR 8
#define DM9802_NOISE_FLOOR 5
#define DMFE_10MHF 0
#define DMFE_100MHF 1
#define DMFE_10MFD 4
#define DMFE_100MFD 5
#define DMFE_AUTO 8
#define DMFE_1M_HPNA 0x10
#define DMFE_TXTH_72 0x400000 /* TX TH 72 byte */
#define DMFE_TXTH_96 0x404000 /* TX TH 96 byte */
#define DMFE_TXTH_128 0x0000 /* TX TH 128 byte */
#define DMFE_TXTH_256 0x4000 /* TX TH 256 byte */
#define DMFE_TXTH_512 0x8000 /* TX TH 512 byte */
#define DMFE_TXTH_1K 0xC000 /* TX TH 1K byte */
#define DMFE_TIMER_WUT (jiffies + HZ * 1)/* timer wakeup time : 1 second */
#define DMFE_TX_TIMEOUT ((3*HZ)/2) /* tx packet time-out time 1.5 s" */
#define DMFE_TX_KICK (HZ/2) /* tx packet Kick-out time 0.5 s" */
#define DMFE_DBUG(dbug_now, msg, value) if (dmfe_debug || (dbug_now)) printk(KERN_ERR DRV_NAME ": %s %lx\n", (msg), (long) (value))
#define SHOW_MEDIA_TYPE(mode) printk(KERN_ERR DRV_NAME ": Change Speed to %sMhz %s duplex\n",mode & 1 ?"100":"10", mode & 4 ? "full":"half");
/* CR9 definition: SROM/MII */
#define CR9_SROM_READ 0x4800
#define CR9_SRCS 0x1
#define CR9_SRCLK 0x2
#define CR9_CRDOUT 0x8
#define SROM_DATA_0 0x0
#define SROM_DATA_1 0x4
#define PHY_DATA_1 0x20000
#define PHY_DATA_0 0x00000
#define MDCLKH 0x10000
#define PHY_POWER_DOWN 0x800
#define SROM_V41_CODE 0x14
#define SROM_CLK_WRITE(data, ioaddr) outl(data|CR9_SROM_READ|CR9_SRCS,ioaddr);udelay(5);outl(data|CR9_SROM_READ|CR9_SRCS|CR9_SRCLK,ioaddr);udelay(5);outl(data|CR9_SROM_READ|CR9_SRCS,ioaddr);udelay(5);
#define __CHK_IO_SIZE(pci_id, dev_rev) ( ((pci_id)==PCI_DM9132_ID) || ((dev_rev) >= 0x02000030) ) ? DM9102A_IO_SIZE: DM9102_IO_SIZE
#define CHK_IO_SIZE(pci_dev, dev_rev) __CHK_IO_SIZE(((pci_dev)->device << 16) | (pci_dev)->vendor, dev_rev)
/* Sten Check */
#define DEVICE net_device
/* Structure/enum declaration ------------------------------- */
struct tx_desc {
u32 tdes0, tdes1, tdes2, tdes3; /* Data for the card */
char *tx_buf_ptr; /* Data for us */
struct tx_desc *next_tx_desc;
} __attribute__(( aligned(32) ));
struct rx_desc {
u32 rdes0, rdes1, rdes2, rdes3; /* Data for the card */
struct sk_buff *rx_skb_ptr; /* Data for us */
struct rx_desc *next_rx_desc;
} __attribute__(( aligned(32) ));
struct dmfe_board_info {
u32 chip_id; /* Chip vendor/Device ID */
u32 chip_revision; /* Chip revision */
struct DEVICE *next_dev; /* next device */
struct pci_dev *pdev; /* PCI device */
spinlock_t lock;
long ioaddr; /* I/O base address */
u32 cr0_data;
u32 cr5_data;
u32 cr6_data;
u32 cr7_data;
u32 cr15_data;
/* pointer for memory physical address */
dma_addr_t buf_pool_dma_ptr; /* Tx buffer pool memory */
dma_addr_t buf_pool_dma_start; /* Tx buffer pool align dword */
dma_addr_t desc_pool_dma_ptr; /* descriptor pool memory */
dma_addr_t first_tx_desc_dma;
dma_addr_t first_rx_desc_dma;
/* descriptor pointer */
unsigned char *buf_pool_ptr; /* Tx buffer pool memory */
unsigned char *buf_pool_start; /* Tx buffer pool align dword */
unsigned char *desc_pool_ptr; /* descriptor pool memory */
struct tx_desc *first_tx_desc;
struct tx_desc *tx_insert_ptr;
struct tx_desc *tx_remove_ptr;
struct rx_desc *first_rx_desc;
struct rx_desc *rx_insert_ptr;
struct rx_desc *rx_ready_ptr; /* packet come pointer */
unsigned long tx_packet_cnt; /* transmitted packet count */
unsigned long tx_queue_cnt; /* wait to send packet count */
unsigned long rx_avail_cnt; /* available rx descriptor count */
unsigned long interval_rx_cnt; /* rx packet count a callback time */
u16 HPNA_command; /* For HPNA register 16 */
u16 HPNA_timer; /* For HPNA remote device check */
u16 dbug_cnt;
u16 NIC_capability; /* NIC media capability */
u16 PHY_reg4; /* Saved Phyxcer register 4 value */
u8 HPNA_present; /* 0:none, 1:DM9801, 2:DM9802 */
u8 chip_type; /* Keep DM9102A chip type */
u8 media_mode; /* user specify media mode */
u8 op_mode; /* real work media mode */
u8 phy_addr;
u8 link_failed; /* Ever link failed */
u8 wait_reset; /* Hardware failed, need to reset */
u8 dm910x_chk_mode; /* Operating mode check */
u8 first_in_callback; /* Flag to record state */
struct timer_list timer;
/* System defined statistic counter */
struct net_device_stats stats;
/* Driver defined statistic counter */
unsigned long tx_fifo_underrun;
unsigned long tx_loss_carrier;
unsigned long tx_no_carrier;
unsigned long tx_late_collision;
unsigned long tx_excessive_collision;
unsigned long tx_jabber_timeout;
unsigned long reset_count;
unsigned long reset_cr8;
unsigned long reset_fatal;
unsigned long reset_TXtimeout;
/* NIC SROM data */
unsigned char srom[128];
};
enum dmfe_offsets {
DCR0 = 0x00, DCR1 = 0x08, DCR2 = 0x10, DCR3 = 0x18, DCR4 = 0x20,
DCR5 = 0x28, DCR6 = 0x30, DCR7 = 0x38, DCR8 = 0x40, DCR9 = 0x48,
DCR10 = 0x50, DCR11 = 0x58, DCR12 = 0x60, DCR13 = 0x68, DCR14 = 0x70,
DCR15 = 0x78
};
enum dmfe_CR6_bits {
CR6_RXSC = 0x2, CR6_PBF = 0x8, CR6_PM = 0x40, CR6_PAM = 0x80,
CR6_FDM = 0x200, CR6_TXSC = 0x2000, CR6_STI = 0x100000,
CR6_SFT = 0x200000, CR6_RXA = 0x40000000, CR6_NO_PURGE = 0x20000000
};
/* Global variable declaration ----------------------------- */
static int __devinitdata printed_version;
static char version[] __devinitdata =
KERN_INFO DRV_NAME ": Davicom DM9xxx net driver, version "
DRV_VERSION " (" DRV_RELDATE ")\n";
static int dmfe_debug;
static unsigned char dmfe_media_mode = DMFE_AUTO;
static u32 dmfe_cr6_user_set;
/* For module input parameter */
static int debug;
static u32 cr6set;
static unsigned char mode = 8;
static u8 chkmode = 1;
static u8 HPNA_mode; /* Default: Low Power/High Speed */
static u8 HPNA_rx_cmd; /* Default: Disable Rx remote command */
static u8 HPNA_tx_cmd; /* Default: Don't issue remote command */
static u8 HPNA_NoiseFloor; /* Default: HPNA NoiseFloor */
static u8 SF_mode; /* Special Function: 1:VLAN, 2:RX Flow Control
4: TX pause packet */
/* function declaration ------------------------------------- */
static int dmfe_open(struct DEVICE *);
static int dmfe_start_xmit(struct sk_buff *, struct DEVICE *);
static int dmfe_stop(struct DEVICE *);
static struct net_device_stats * dmfe_get_stats(struct DEVICE *);
static void dmfe_set_filter_mode(struct DEVICE *);
static struct ethtool_ops netdev_ethtool_ops;
static u16 read_srom_word(long ,int);
static irqreturn_t dmfe_interrupt(int , void *, struct pt_regs *);
#ifdef CONFIG_NET_POLL_CONTROLLER
static void poll_dmfe (struct net_device *dev);
#endif
static void dmfe_descriptor_init(struct dmfe_board_info *, unsigned long);
static void allocate_rx_buffer(struct dmfe_board_info *);
static void update_cr6(u32, unsigned long);
static void send_filter_frame(struct DEVICE * ,int);
static void dm9132_id_table(struct DEVICE * ,int);
static u16 phy_read(unsigned long, u8, u8, u32);
static void phy_write(unsigned long, u8, u8, u16, u32);
static void phy_write_1bit(unsigned long, u32);
static u16 phy_read_1bit(unsigned long);
static u8 dmfe_sense_speed(struct dmfe_board_info *);
static void dmfe_process_mode(struct dmfe_board_info *);
static void dmfe_timer(unsigned long);
static inline u32 cal_CRC(unsigned char *, unsigned int, u8);
static void dmfe_rx_packet(struct DEVICE *, struct dmfe_board_info *);
static void dmfe_free_tx_pkt(struct DEVICE *, struct dmfe_board_info *);
static void dmfe_reuse_skb(struct dmfe_board_info *, struct sk_buff *);
static void dmfe_dynamic_reset(struct DEVICE *);
static void dmfe_free_rxbuffer(struct dmfe_board_info *);
static void dmfe_init_dm910x(struct DEVICE *);
static void dmfe_parse_srom(struct dmfe_board_info *);
static void dmfe_program_DM9801(struct dmfe_board_info *, int);
static void dmfe_program_DM9802(struct dmfe_board_info *);
static void dmfe_HPNA_remote_cmd_chk(struct dmfe_board_info * );
static void dmfe_set_phyxcer(struct dmfe_board_info *);
/* DM910X network baord routine ---------------------------- */
/*
* Search DM910X board ,allocate space and register it
*/
static int __devinit dmfe_init_one (struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct dmfe_board_info *db; /* board information structure */
struct net_device *dev;
u32 dev_rev, pci_pmr;
int i, err;
DMFE_DBUG(0, "dmfe_init_one()", 0);
if (!printed_version++)
printk(version);
/* Init network device */
dev = alloc_etherdev(sizeof(*db));
if (dev == NULL)
return -ENOMEM;
SET_MODULE_OWNER(dev);
SET_NETDEV_DEV(dev, &pdev->dev);
if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
printk(KERN_WARNING DRV_NAME ": 32-bit PCI DMA not available.\n");
err = -ENODEV;
goto err_out_free;
}
/* Enable Master/IO access, Disable memory access */
err = pci_enable_device(pdev);
if (err)
goto err_out_free;
if (!pci_resource_start(pdev, 0)) {
printk(KERN_ERR DRV_NAME ": I/O base is zero\n");
err = -ENODEV;
goto err_out_disable;
}
/* Read Chip revision */
pci_read_config_dword(pdev, PCI_REVISION_ID, &dev_rev);
if (pci_resource_len(pdev, 0) < (CHK_IO_SIZE(pdev, dev_rev)) ) {
printk(KERN_ERR DRV_NAME ": Allocated I/O size too small\n");
err = -ENODEV;
goto err_out_disable;
}
#if 0 /* pci_{enable_device,set_master} sets minimum latency for us now */
/* Set Latency Timer 80h */
/* FIXME: setting values > 32 breaks some SiS 559x stuff.
Need a PCI quirk.. */
pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
#endif
if (pci_request_regions(pdev, DRV_NAME)) {
printk(KERN_ERR DRV_NAME ": Failed to request PCI regions\n");
err = -ENODEV;
goto err_out_disable;
}
/* Init system & device */
db = netdev_priv(dev);
/* Allocate Tx/Rx descriptor memory */
db->desc_pool_ptr = pci_alloc_consistent(pdev, sizeof(struct tx_desc) * DESC_ALL_CNT + 0x20, &db->desc_pool_dma_ptr);
db->buf_pool_ptr = pci_alloc_consistent(pdev, TX_BUF_ALLOC * TX_DESC_CNT + 4, &db->buf_pool_dma_ptr);
db->first_tx_desc = (struct tx_desc *) db->desc_pool_ptr;
db->first_tx_desc_dma = db->desc_pool_dma_ptr;
db->buf_pool_start = db->buf_pool_ptr;
db->buf_pool_dma_start = db->buf_pool_dma_ptr;
db->chip_id = ent->driver_data;
db->ioaddr = pci_resource_start(pdev, 0);
db->chip_revision = dev_rev;
db->pdev = pdev;
dev->base_addr = db->ioaddr;
dev->irq = pdev->irq;
pci_set_drvdata(pdev, dev);
dev->open = &dmfe_open;
dev->hard_start_xmit = &dmfe_start_xmit;
dev->stop = &dmfe_stop;
dev->get_stats = &dmfe_get_stats;
dev->set_multicast_list = &dmfe_set_filter_mode;
#ifdef CONFIG_NET_POLL_CONTROLLER
dev->poll_controller = &poll_dmfe;
#endif
dev->ethtool_ops = &netdev_ethtool_ops;
spin_lock_init(&db->lock);
pci_read_config_dword(pdev, 0x50, &pci_pmr);
pci_pmr &= 0x70000;
if ( (pci_pmr == 0x10000) && (dev_rev == 0x02000031) )
db->chip_type = 1; /* DM9102A E3 */
else
db->chip_type = 0;
/* read 64 word srom data */
for (i = 0; i < 64; i++)
((u16 *) db->srom)[i] = cpu_to_le16(read_srom_word(db->ioaddr, i));
/* Set Node address */
for (i = 0; i < 6; i++)
dev->dev_addr[i] = db->srom[20 + i];
err = register_netdev (dev);
if (err)
goto err_out_res;
printk(KERN_INFO "%s: Davicom DM%04lx at pci%s,",
dev->name,
ent->driver_data >> 16,
pci_name(pdev));
for (i = 0; i < 6; i++)
printk("%c%02x", i ? ':' : ' ', dev->dev_addr[i]);
printk(", irq %d.\n", dev->irq);
pci_set_master(pdev);
return 0;
err_out_res:
pci_release_regions(pdev);
err_out_disable:
pci_disable_device(pdev);
err_out_free:
pci_set_drvdata(pdev, NULL);
free_netdev(dev);
return err;
}
static void __devexit dmfe_remove_one (struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
struct dmfe_board_info *db = netdev_priv(dev);
DMFE_DBUG(0, "dmfe_remove_one()", 0);
if (dev) {
pci_free_consistent(db->pdev, sizeof(struct tx_desc) *
DESC_ALL_CNT + 0x20, db->desc_pool_ptr,
db->desc_pool_dma_ptr);
pci_free_consistent(db->pdev, TX_BUF_ALLOC * TX_DESC_CNT + 4,
db->buf_pool_ptr, db->buf_pool_dma_ptr);
unregister_netdev(dev);
pci_release_regions(pdev);
free_netdev(dev); /* free board information */
pci_set_drvdata(pdev, NULL);
}
DMFE_DBUG(0, "dmfe_remove_one() exit", 0);
}
/*
* Open the interface.
* The interface is opened whenever "ifconfig" actives it.
*/
static int dmfe_open(struct DEVICE *dev)
{
int ret;
struct dmfe_board_info *db = netdev_priv(dev);
DMFE_DBUG(0, "dmfe_open", 0);
ret = request_irq(dev->irq, &dmfe_interrupt, SA_SHIRQ, dev->name, dev);
if (ret)
return ret;
/* system variable init */
db->cr6_data = CR6_DEFAULT | dmfe_cr6_user_set;
db->tx_packet_cnt = 0;
db->tx_queue_cnt = 0;
db->rx_avail_cnt = 0;
db->link_failed = 1;
db->wait_reset = 0;
db->first_in_callback = 0;
db->NIC_capability = 0xf; /* All capability*/
db->PHY_reg4 = 0x1e0;
/* CR6 operation mode decision */
if ( !chkmode || (db->chip_id == PCI_DM9132_ID) ||
(db->chip_revision >= 0x02000030) ) {
db->cr6_data |= DMFE_TXTH_256;
db->cr0_data = CR0_DEFAULT;
db->dm910x_chk_mode=4; /* Enter the normal mode */
} else {
db->cr6_data |= CR6_SFT; /* Store & Forward mode */
db->cr0_data = 0;
db->dm910x_chk_mode = 1; /* Enter the check mode */
}
/* Initilize DM910X board */
dmfe_init_dm910x(dev);
/* Active System Interface */
netif_wake_queue(dev);
/* set and active a timer process */
init_timer(&db->timer);
db->timer.expires = DMFE_TIMER_WUT + HZ * 2;
db->timer.data = (unsigned long)dev;
db->timer.function = &dmfe_timer;
add_timer(&db->timer);
return 0;
}
/* Initilize DM910X board
* Reset DM910X board
* Initilize TX/Rx descriptor chain structure
* Send the set-up frame
* Enable Tx/Rx machine
*/
static void dmfe_init_dm910x(struct DEVICE *dev)
{
struct dmfe_board_info *db = netdev_priv(dev);
unsigned long ioaddr = db->ioaddr;
DMFE_DBUG(0, "dmfe_init_dm910x()", 0);
/* Reset DM910x MAC controller */
outl(DM910X_RESET, ioaddr + DCR0); /* RESET MAC */
udelay(100);
outl(db->cr0_data, ioaddr + DCR0);
udelay(5);
/* Phy addr : DM910(A)2/DM9132/9801, phy address = 1 */
db->phy_addr = 1;
/* Parser SROM and media mode */
dmfe_parse_srom(db);
db->media_mode = dmfe_media_mode;
/* RESET Phyxcer Chip by GPR port bit 7 */
outl(0x180, ioaddr + DCR12); /* Let bit 7 output port */
if (db->chip_id == PCI_DM9009_ID) {
outl(0x80, ioaddr + DCR12); /* Issue RESET signal */
mdelay(300); /* Delay 300 ms */
}
outl(0x0, ioaddr + DCR12); /* Clear RESET signal */
/* Process Phyxcer Media Mode */
if ( !(db->media_mode & 0x10) ) /* Force 1M mode */
dmfe_set_phyxcer(db);
/* Media Mode Process */
if ( !(db->media_mode & DMFE_AUTO) )
db->op_mode = db->media_mode; /* Force Mode */
/* Initiliaze Transmit/Receive decriptor and CR3/4 */
dmfe_descriptor_init(db, ioaddr);
/* Init CR6 to program DM910x operation */
update_cr6(db->cr6_data, ioaddr);
/* Send setup frame */
if (db->chip_id == PCI_DM9132_ID)
dm9132_id_table(dev, dev->mc_count); /* DM9132 */
else
send_filter_frame(dev, dev->mc_count); /* DM9102/DM9102A */
/* Init CR7, interrupt active bit */
db->cr7_data = CR7_DEFAULT;
outl(db->cr7_data, ioaddr + DCR7);
/* Init CR15, Tx jabber and Rx watchdog timer */
outl(db->cr15_data, ioaddr + DCR15);
/* Enable DM910X Tx/Rx function */
db->cr6_data |= CR6_RXSC | CR6_TXSC | 0x40000;
update_cr6(db->cr6_data, ioaddr);
}
/*
* Hardware start transmission.
* Send a packet to media from the upper layer.
*/
static int dmfe_start_xmit(struct sk_buff *skb, struct DEVICE *dev)
{
struct dmfe_board_info *db = netdev_priv(dev);
struct tx_desc *txptr;
unsigned long flags;
DMFE_DBUG(0, "dmfe_start_xmit", 0);
/* Resource flag check */
netif_stop_queue(dev);
/* Too large packet check */
if (skb->len > MAX_PACKET_SIZE) {
printk(KERN_ERR DRV_NAME ": big packet = %d\n", (u16)skb->len);
dev_kfree_skb(skb);
return 0;
}
spin_lock_irqsave(&db->lock, flags);
/* No Tx resource check, it never happen nromally */
if (db->tx_queue_cnt >= TX_FREE_DESC_CNT) {
spin_unlock_irqrestore(&db->lock, flags);
printk(KERN_ERR DRV_NAME ": No Tx resource %ld\n", db->tx_queue_cnt);
return 1;
}
/* Disable NIC interrupt */
outl(0, dev->base_addr + DCR7);
/* transmit this packet */
txptr = db->tx_insert_ptr;
memcpy(txptr->tx_buf_ptr, skb->data, skb->len);
txptr->tdes1 = cpu_to_le32(0xe1000000 | skb->len);
/* Point to next transmit free descriptor */
db->tx_insert_ptr = txptr->next_tx_desc;
/* Transmit Packet Process */
if ( (!db->tx_queue_cnt) && (db->tx_packet_cnt < TX_MAX_SEND_CNT) ) {
txptr->tdes0 = cpu_to_le32(0x80000000); /* Set owner bit */
db->tx_packet_cnt++; /* Ready to send */
outl(0x1, dev->base_addr + DCR1); /* Issue Tx polling */
dev->trans_start = jiffies; /* saved time stamp */
} else {
db->tx_queue_cnt++; /* queue TX packet */
outl(0x1, dev->base_addr + DCR1); /* Issue Tx polling */
}
/* Tx resource check */
if ( db->tx_queue_cnt < TX_FREE_DESC_CNT )
netif_wake_queue(dev);
/* Restore CR7 to enable interrupt */
spin_unlock_irqrestore(&db->lock, flags);
outl(db->cr7_data, dev->base_addr + DCR7);
/* free this SKB */
dev_kfree_skb(skb);
return 0;
}
/*
* Stop the interface.
* The interface is stopped when it is brought.
*/
static int dmfe_stop(struct DEVICE *dev)
{
struct dmfe_board_info *db = netdev_priv(dev);
unsigned long ioaddr = dev->base_addr;
DMFE_DBUG(0, "dmfe_stop", 0);
/* disable system */
netif_stop_queue(dev);
/* deleted timer */
del_timer_sync(&db->timer);
/* Reset & stop DM910X board */
outl(DM910X_RESET, ioaddr + DCR0);
udelay(5);
phy_write(db->ioaddr, db->phy_addr, 0, 0x8000, db->chip_id);
/* free interrupt */
free_irq(dev->irq, dev);
/* free allocated rx buffer */
dmfe_free_rxbuffer(db);
#if 0
/* show statistic counter */
printk(DRV_NAME ": FU:%lx EC:%lx LC:%lx NC:%lx LOC:%lx TXJT:%lx RESET:%lx RCR8:%lx FAL:%lx TT:%lx\n",
db->tx_fifo_underrun, db->tx_excessive_collision,
db->tx_late_collision, db->tx_no_carrier, db->tx_loss_carrier,
db->tx_jabber_timeout, db->reset_count, db->reset_cr8,
db->reset_fatal, db->reset_TXtimeout);
#endif
return 0;
}
/*
* DM9102 insterrupt handler
* receive the packet to upper layer, free the transmitted packet
*/
static irqreturn_t dmfe_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
struct DEVICE *dev = dev_id;
struct dmfe_board_info *db = netdev_priv(dev);
unsigned long ioaddr = dev->base_addr;
unsigned long flags;
DMFE_DBUG(0, "dmfe_interrupt()", 0);
spin_lock_irqsave(&db->lock, flags);
/* Got DM910X status */
db->cr5_data = inl(ioaddr + DCR5);
outl(db->cr5_data, ioaddr + DCR5);
if ( !(db->cr5_data & 0xc1) ) {
spin_unlock_irqrestore(&db->lock, flags);
return IRQ_HANDLED;
}
/* Disable all interrupt in CR7 to solve the interrupt edge problem */
outl(0, ioaddr + DCR7);
/* Check system status */
if (db->cr5_data & 0x2000) {
/* system bus error happen */
DMFE_DBUG(1, "System bus error happen. CR5=", db->cr5_data);
db->reset_fatal++;
db->wait_reset = 1; /* Need to RESET */
spin_unlock_irqrestore(&db->lock, flags);
return IRQ_HANDLED;
}
/* Received the coming packet */
if ( (db->cr5_data & 0x40) && db->rx_avail_cnt )
dmfe_rx_packet(dev, db);
/* reallocate rx descriptor buffer */
if (db->rx_avail_cnt<RX_DESC_CNT)
allocate_rx_buffer(db);
/* Free the transmitted descriptor */
if ( db->cr5_data & 0x01)
dmfe_free_tx_pkt(dev, db);
/* Mode Check */
if (db->dm910x_chk_mode & 0x2) {
db->dm910x_chk_mode = 0x4;
db->cr6_data |= 0x100;
update_cr6(db->cr6_data, db->ioaddr);
}
/* Restore CR7 to enable interrupt mask */
outl(db->cr7_data, ioaddr + DCR7);
spin_unlock_irqrestore(&db->lock, flags);
return IRQ_HANDLED;
}
#ifdef CONFIG_NET_POLL_CONTROLLER
/*
* Polling 'interrupt' - used by things like netconsole to send skbs
* without having to re-enable interrupts. It's not called while
* the interrupt routine is executing.
*/
static void poll_dmfe (struct net_device *dev)
{
/* disable_irq here is not very nice, but with the lockless
interrupt handler we have no other choice. */
disable_irq(dev->irq);
dmfe_interrupt (dev->irq, dev, NULL);
enable_irq(dev->irq);
}
#endif
/*
* Free TX resource after TX complete
*/
static void dmfe_free_tx_pkt(struct DEVICE *dev, struct dmfe_board_info * db)
{
struct tx_desc *txptr;
unsigned long ioaddr = dev->base_addr;
u32 tdes0;
txptr = db->tx_remove_ptr;
while(db->tx_packet_cnt) {
tdes0 = le32_to_cpu(txptr->tdes0);
/* printk(DRV_NAME ": tdes0=%x\n", tdes0); */
if (tdes0 & 0x80000000)
break;
/* A packet sent completed */
db->tx_packet_cnt--;
db->stats.tx_packets++;
/* Transmit statistic counter */
if ( tdes0 != 0x7fffffff ) {
/* printk(DRV_NAME ": tdes0=%x\n", tdes0); */
db->stats.collisions += (tdes0 >> 3) & 0xf;
db->stats.tx_bytes += le32_to_cpu(txptr->tdes1) & 0x7ff;
if (tdes0 & TDES0_ERR_MASK) {
db->stats.tx_errors++;
if (tdes0 & 0x0002) { /* UnderRun */
db->tx_fifo_underrun++;
if ( !(db->cr6_data & CR6_SFT) ) {
db->cr6_data = db->cr6_data | CR6_SFT;
update_cr6(db->cr6_data, db->ioaddr);
}
}
if (tdes0 & 0x0100)
db->tx_excessive_collision++;
if (tdes0 & 0x0200)
db->tx_late_collision++;
if (tdes0 & 0x0400)
db->tx_no_carrier++;
if (tdes0 & 0x0800)
db->tx_loss_carrier++;
if (tdes0 & 0x4000)
db->tx_jabber_timeout++;
}
}
txptr = txptr->next_tx_desc;
}/* End of while */
/* Update TX remove pointer to next */
db->tx_remove_ptr = txptr;
/* Send the Tx packet in queue */
if ( (db->tx_packet_cnt < TX_MAX_SEND_CNT) && db->tx_queue_cnt ) {
txptr->tdes0 = cpu_to_le32(0x80000000); /* Set owner bit */
db->tx_packet_cnt++; /* Ready to send */
db->tx_queue_cnt--;
outl(0x1, ioaddr + DCR1); /* Issue Tx polling */
dev->trans_start = jiffies; /* saved time stamp */
}
/* Resource available check */
if ( db->tx_queue_cnt < TX_WAKE_DESC_CNT )
netif_wake_queue(dev); /* Active upper layer, send again */
}
/*
* Calculate the CRC valude of the Rx packet
* flag = 1 : return the reverse CRC (for the received packet CRC)
* 0 : return the normal CRC (for Hash Table index)
*/
static inline u32 cal_CRC(unsigned char * Data, unsigned int Len, u8 flag)
{
u32 crc = crc32(~0, Data, Len);
if (flag) crc = ~crc;
return crc;
}
/*
* Receive the come packet and pass to upper layer
*/
static void dmfe_rx_packet(struct DEVICE *dev, struct dmfe_board_info * db)
{
struct rx_desc *rxptr;
struct sk_buff *skb;
int rxlen;
u32 rdes0;
rxptr = db->rx_ready_ptr;
while(db->rx_avail_cnt) {
rdes0 = le32_to_cpu(rxptr->rdes0);
if (rdes0 & 0x80000000) /* packet owner check */
break;
db->rx_avail_cnt--;
db->interval_rx_cnt++;
pci_unmap_single(db->pdev, le32_to_cpu(rxptr->rdes2), RX_ALLOC_SIZE, PCI_DMA_FROMDEVICE);
if ( (rdes0 & 0x300) != 0x300) {
/* A packet without First/Last flag */
/* reuse this SKB */
DMFE_DBUG(0, "Reuse SK buffer, rdes0", rdes0);
dmfe_reuse_skb(db, rxptr->rx_skb_ptr);
} else {
/* A packet with First/Last flag */
rxlen = ( (rdes0 >> 16) & 0x3fff) - 4;
/* error summary bit check */
if (rdes0 & 0x8000) {
/* This is a error packet */
//printk(DRV_NAME ": rdes0: %lx\n", rdes0);
db->stats.rx_errors++;
if (rdes0 & 1)
db->stats.rx_fifo_errors++;
if (rdes0 & 2)
db->stats.rx_crc_errors++;
if (rdes0 & 0x80)
db->stats.rx_length_errors++;
}
if ( !(rdes0 & 0x8000) ||
((db->cr6_data & CR6_PM) && (rxlen>6)) ) {
skb = rxptr->rx_skb_ptr;
/* Received Packet CRC check need or not */
if ( (db->dm910x_chk_mode & 1) &&
(cal_CRC(skb->data, rxlen, 1) !=
(*(u32 *) (skb->data+rxlen) ))) { /* FIXME (?) */
/* Found a error received packet */
dmfe_reuse_skb(db, rxptr->rx_skb_ptr);
db->dm910x_chk_mode = 3;
} else {
/* Good packet, send to upper layer */
/* Shorst packet used new SKB */
if ( (rxlen < RX_COPY_SIZE) &&
( (skb = dev_alloc_skb(rxlen + 2) )
!= NULL) ) {
/* size less than COPY_SIZE, allocate a rxlen SKB */
skb->dev = dev;
skb_reserve(skb, 2); /* 16byte align */
memcpy(skb_put(skb, rxlen), rxptr->rx_skb_ptr->data, rxlen);
dmfe_reuse_skb(db, rxptr->rx_skb_ptr);
} else {
skb->dev = dev;
skb_put(skb, rxlen);
}
skb->protocol = eth_type_trans(skb, dev);
netif_rx(skb);
dev->last_rx = jiffies;
db->stats.rx_packets++;
db->stats.rx_bytes += rxlen;
}
} else {
/* Reuse SKB buffer when the packet is error */
DMFE_DBUG(0, "Reuse SK buffer, rdes0", rdes0);
dmfe_reuse_skb(db, rxptr->rx_skb_ptr);
}
}
rxptr = rxptr->next_rx_desc;
}
db->rx_ready_ptr = rxptr;
}
/*
* Get statistics from driver.
*/
static struct net_device_stats * dmfe_get_stats(struct DEVICE *dev)
{
struct dmfe_board_info *db = netdev_priv(dev);
DMFE_DBUG(0, "dmfe_get_stats", 0);
return &db->stats;
}
/*
* Set DM910X multicast address
*/
static void dmfe_set_filter_mode(struct DEVICE * dev)
{
struct dmfe_board_info *db = netdev_priv(dev);
unsigned long flags;
DMFE_DBUG(0, "dmfe_set_filter_mode()", 0);
spin_lock_irqsave(&db->lock, flags);
if (dev->flags & IFF_PROMISC) {
DMFE_DBUG(0, "Enable PROM Mode", 0);
db->cr6_data |= CR6_PM | CR6_PBF;
update_cr6(db->cr6_data, db->ioaddr);
spin_unlock_irqrestore(&db->lock, flags);
return;
}
if (dev->flags & IFF_ALLMULTI || dev->mc_count > DMFE_MAX_MULTICAST) {
DMFE_DBUG(0, "Pass all multicast address", dev->mc_count);
db->cr6_data &= ~(CR6_PM | CR6_PBF);
db->cr6_data |= CR6_PAM;
spin_unlock_irqrestore(&db->lock, flags);
return;
}
DMFE_DBUG(0, "Set multicast address", dev->mc_count);
if (db->chip_id == PCI_DM9132_ID)
dm9132_id_table(dev, dev->mc_count); /* DM9132 */
else
send_filter_frame(dev, dev->mc_count); /* DM9102/DM9102A */
spin_unlock_irqrestore(&db->lock, flags);
}
static void netdev_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
struct dmfe_board_info *np = netdev_priv(dev);
strcpy(info->driver, DRV_NAME);
strcpy(info->version, DRV_VERSION);
if (np->pdev)
strcpy(info->bus_info, pci_name(np->pdev));
else
sprintf(info->bus_info, "EISA 0x%lx %d",
dev->base_addr, dev->irq);
}
static struct ethtool_ops netdev_ethtool_ops = {
.get_drvinfo = netdev_get_drvinfo,
};
/*
* A periodic timer routine
* Dynamic media sense, allocate Rx buffer...
*/
static void dmfe_timer(unsigned long data)
{
u32 tmp_cr8;
unsigned char tmp_cr12;
struct DEVICE *dev = (struct DEVICE *) data;
struct dmfe_board_info *db = netdev_priv(dev);
unsigned long flags;
DMFE_DBUG(0, "dmfe_timer()", 0);
spin_lock_irqsave(&db->lock, flags);
/* Media mode process when Link OK before enter this route */
if (db->first_in_callback == 0) {
db->first_in_callback = 1;
if (db->chip_type && (db->chip_id==PCI_DM9102_ID)) {
db->cr6_data &= ~0x40000;
update_cr6(db->cr6_data, db->ioaddr);
phy_write(db->ioaddr, db->phy_addr, 0, 0x1000, db->chip_id);
db->cr6_data |= 0x40000;
update_cr6(db->cr6_data, db->ioaddr);
db->timer.expires = DMFE_TIMER_WUT + HZ * 2;
add_timer(&db->timer);
spin_unlock_irqrestore(&db->lock, flags);
return;
}
}
/* Operating Mode Check */
if ( (db->dm910x_chk_mode & 0x1) &&
(db->stats.rx_packets > MAX_CHECK_PACKET) )
db->dm910x_chk_mode = 0x4;
/* Dynamic reset DM910X : system error or transmit time-out */
tmp_cr8 = inl(db->ioaddr + DCR8);
if ( (db->interval_rx_cnt==0) && (tmp_cr8) ) {
db->reset_cr8++;
db->wait_reset = 1;
}
db->interval_rx_cnt = 0;
/* TX polling kick monitor */
if ( db->tx_packet_cnt &&
time_after(jiffies, dev->trans_start + DMFE_TX_KICK) ) {
outl(0x1, dev->base_addr + DCR1); /* Tx polling again */
/* TX Timeout */
if ( time_after(jiffies, dev->trans_start + DMFE_TX_TIMEOUT) ) {
db->reset_TXtimeout++;
db->wait_reset = 1;
printk(KERN_WARNING "%s: Tx timeout - resetting\n",
dev->name);
}
}
if (db->wait_reset) {
DMFE_DBUG(0, "Dynamic Reset device", db->tx_packet_cnt);
db->reset_count++;
dmfe_dynamic_reset(dev);
db->first_in_callback = 0;
db->timer.expires = DMFE_TIMER_WUT;
add_timer(&db->timer);
spin_unlock_irqrestore(&db->lock, flags);
return;
}
/* Link status check, Dynamic media type change */
if (db->chip_id == PCI_DM9132_ID)
tmp_cr12 = inb(db->ioaddr + DCR9 + 3); /* DM9132 */
else
tmp_cr12 = inb(db->ioaddr + DCR12); /* DM9102/DM9102A */
if ( ((db->chip_id == PCI_DM9102_ID) &&
(db->chip_revision == 0x02000030)) ||
((db->chip_id == PCI_DM9132_ID) &&
(db->chip_revision == 0x02000010)) ) {
/* DM9102A Chip */
if (tmp_cr12 & 2)
tmp_cr12 = 0x0; /* Link failed */
else
tmp_cr12 = 0x3; /* Link OK */
}
if ( !(tmp_cr12 & 0x3) && !db->link_failed ) {
/* Link Failed */
DMFE_DBUG(0, "Link Failed", tmp_cr12);
db->link_failed = 1;
/* For Force 10/100M Half/Full mode: Enable Auto-Nego mode */
/* AUTO or force 1M Homerun/Longrun don't need */
if ( !(db->media_mode & 0x38) )
phy_write(db->ioaddr, db->phy_addr, 0, 0x1000, db->chip_id);
/* AUTO mode, if INT phyxcer link failed, select EXT device */
if (db->media_mode & DMFE_AUTO) {
/* 10/100M link failed, used 1M Home-Net */
db->cr6_data|=0x00040000; /* bit18=1, MII */
db->cr6_data&=~0x00000200; /* bit9=0, HD mode */
update_cr6(db->cr6_data, db->ioaddr);
}
} else
if ((tmp_cr12 & 0x3) && db->link_failed) {
DMFE_DBUG(0, "Link link OK", tmp_cr12);
db->link_failed = 0;
/* Auto Sense Speed */
if ( (db->media_mode & DMFE_AUTO) &&
dmfe_sense_speed(db) )
db->link_failed = 1;
dmfe_process_mode(db);
/* SHOW_MEDIA_TYPE(db->op_mode); */
}
/* HPNA remote command check */
if (db->HPNA_command & 0xf00) {
db->HPNA_timer--;
if (!db->HPNA_timer)
dmfe_HPNA_remote_cmd_chk(db);
}
/* Timer active again */
db->timer.expires = DMFE_TIMER_WUT;
add_timer(&db->timer);
spin_unlock_irqrestore(&db->lock, flags);
}
/*
* Dynamic reset the DM910X board
* Stop DM910X board
* Free Tx/Rx allocated memory
* Reset DM910X board
* Re-initilize DM910X board
*/
static void dmfe_dynamic_reset(struct DEVICE *dev)
{
struct dmfe_board_info *db = netdev_priv(dev);
DMFE_DBUG(0, "dmfe_dynamic_reset()", 0);
/* Sopt MAC controller */
db->cr6_data &= ~(CR6_RXSC | CR6_TXSC); /* Disable Tx/Rx */
update_cr6(db->cr6_data, dev->base_addr);
outl(0, dev->base_addr + DCR7); /* Disable Interrupt */
outl(inl(dev->base_addr + DCR5), dev->base_addr + DCR5);
/* Disable upper layer interface */
netif_stop_queue(dev);
/* Free Rx Allocate buffer */
dmfe_free_rxbuffer(db);
/* system variable init */
db->tx_packet_cnt = 0;
db->tx_queue_cnt = 0;
db->rx_avail_cnt = 0;
db->link_failed = 1;
db->wait_reset = 0;
/* Re-initilize DM910X board */
dmfe_init_dm910x(dev);
/* Restart upper layer interface */
netif_wake_queue(dev);
}
/*
* free all allocated rx buffer
*/
static void dmfe_free_rxbuffer(struct dmfe_board_info * db)
{
DMFE_DBUG(0, "dmfe_free_rxbuffer()", 0);
/* free allocated rx buffer */
while (db->rx_avail_cnt) {
dev_kfree_skb(db->rx_ready_ptr->rx_skb_ptr);
db->rx_ready_ptr = db->rx_ready_ptr->next_rx_desc;
db->rx_avail_cnt--;
}
}
/*
* Reuse the SK buffer
*/
static void dmfe_reuse_skb(struct dmfe_board_info *db, struct sk_buff * skb)
{
struct rx_desc *rxptr = db->rx_insert_ptr;
if (!(rxptr->rdes0 & cpu_to_le32(0x80000000))) {
rxptr->rx_skb_ptr = skb;
rxptr->rdes2 = cpu_to_le32( pci_map_single(db->pdev, skb->data, RX_ALLOC_SIZE, PCI_DMA_FROMDEVICE) );
wmb();
rxptr->rdes0 = cpu_to_le32(0x80000000);
db->rx_avail_cnt++;
db->rx_insert_ptr = rxptr->next_rx_desc;
} else
DMFE_DBUG(0, "SK Buffer reuse method error", db->rx_avail_cnt);
}
/*
* Initialize transmit/Receive descriptor
* Using Chain structure, and allocate Tx/Rx buffer
*/
static void dmfe_descriptor_init(struct dmfe_board_info *db, unsigned long ioaddr)
{
struct tx_desc *tmp_tx;
struct rx_desc *tmp_rx;
unsigned char *tmp_buf;
dma_addr_t tmp_tx_dma, tmp_rx_dma;
dma_addr_t tmp_buf_dma;
int i;
DMFE_DBUG(0, "dmfe_descriptor_init()", 0);
/* tx descriptor start pointer */
db->tx_insert_ptr = db->first_tx_desc;
db->tx_remove_ptr = db->first_tx_desc;
outl(db->first_tx_desc_dma, ioaddr + DCR4); /* TX DESC address */
/* rx descriptor start pointer */
db->first_rx_desc = (void *)db->first_tx_desc + sizeof(struct tx_desc) * TX_DESC_CNT;
db->first_rx_desc_dma = db->first_tx_desc_dma + sizeof(struct tx_desc) * TX_DESC_CNT;
db->rx_insert_ptr = db->first_rx_desc;
db->rx_ready_ptr = db->first_rx_desc;
outl(db->first_rx_desc_dma, ioaddr + DCR3); /* RX DESC address */
/* Init Transmit chain */
tmp_buf = db->buf_pool_start;
tmp_buf_dma = db->buf_pool_dma_start;
tmp_tx_dma = db->first_tx_desc_dma;
for (tmp_tx = db->first_tx_desc, i = 0; i < TX_DESC_CNT; i++, tmp_tx++) {
tmp_tx->tx_buf_ptr = tmp_buf;
tmp_tx->tdes0 = cpu_to_le32(0);
tmp_tx->tdes1 = cpu_to_le32(0x81000000); /* IC, chain */
tmp_tx->tdes2 = cpu_to_le32(tmp_buf_dma);
tmp_tx_dma += sizeof(struct tx_desc);
tmp_tx->tdes3 = cpu_to_le32(tmp_tx_dma);
tmp_tx->next_tx_desc = tmp_tx + 1;
tmp_buf = tmp_buf + TX_BUF_ALLOC;
tmp_buf_dma = tmp_buf_dma + TX_BUF_ALLOC;
}
(--tmp_tx)->tdes3 = cpu_to_le32(db->first_tx_desc_dma);
tmp_tx->next_tx_desc = db->first_tx_desc;
/* Init Receive descriptor chain */
tmp_rx_dma=db->first_rx_desc_dma;
for (tmp_rx = db->first_rx_desc, i = 0; i < RX_DESC_CNT; i++, tmp_rx++) {
tmp_rx->rdes0 = cpu_to_le32(0);
tmp_rx->rdes1 = cpu_to_le32(0x01000600);
tmp_rx_dma += sizeof(struct rx_desc);
tmp_rx->rdes3 = cpu_to_le32(tmp_rx_dma);
tmp_rx->next_rx_desc = tmp_rx + 1;
}
(--tmp_rx)->rdes3 = cpu_to_le32(db->first_rx_desc_dma);
tmp_rx->next_rx_desc = db->first_rx_desc;
/* pre-allocate Rx buffer */
allocate_rx_buffer(db);
}
/*
* Update CR6 value
* Firstly stop DM910X , then written value and start
*/
static void update_cr6(u32 cr6_data, unsigned long ioaddr)
{
u32 cr6_tmp;
cr6_tmp = cr6_data & ~0x2002; /* stop Tx/Rx */
outl(cr6_tmp, ioaddr + DCR6);
udelay(5);
outl(cr6_data, ioaddr + DCR6);
udelay(5);
}
/*
* Send a setup frame for DM9132
* This setup frame initilize DM910X address filter mode
*/
static void dm9132_id_table(struct DEVICE *dev, int mc_cnt)
{
struct dev_mc_list *mcptr;
u16 * addrptr;
unsigned long ioaddr = dev->base_addr+0xc0; /* ID Table */
u32 hash_val;
u16 i, hash_table[4];
DMFE_DBUG(0, "dm9132_id_table()", 0);
/* Node address */
addrptr = (u16 *) dev->dev_addr;
outw(addrptr[0], ioaddr);
ioaddr += 4;
outw(addrptr[1], ioaddr);
ioaddr += 4;
outw(addrptr[2], ioaddr);
ioaddr += 4;
/* Clear Hash Table */
for (i = 0; i < 4; i++)
hash_table[i] = 0x0;
/* broadcast address */
hash_table[3] = 0x8000;
/* the multicast address in Hash Table : 64 bits */
for (mcptr = dev->mc_list, i = 0; i < mc_cnt; i++, mcptr = mcptr->next) {
hash_val = cal_CRC( (char *) mcptr->dmi_addr, 6, 0) & 0x3f;
hash_table[hash_val / 16] |= (u16) 1 << (hash_val % 16);
}
/* Write the hash table to MAC MD table */
for (i = 0; i < 4; i++, ioaddr += 4)
outw(hash_table[i], ioaddr);
}
/*
* Send a setup frame for DM9102/DM9102A
* This setup frame initilize DM910X address filter mode
*/
static void send_filter_frame(struct DEVICE *dev, int mc_cnt)
{
struct dmfe_board_info *db = netdev_priv(dev);
struct dev_mc_list *mcptr;
struct tx_desc *txptr;
u16 * addrptr;
u32 * suptr;
int i;
DMFE_DBUG(0, "send_filter_frame()", 0);
txptr = db->tx_insert_ptr;
suptr = (u32 *) txptr->tx_buf_ptr;
/* Node address */
addrptr = (u16 *) dev->dev_addr;
*suptr++ = addrptr[0];
*suptr++ = addrptr[1];
*suptr++ = addrptr[2];
/* broadcast address */
*suptr++ = 0xffff;
*suptr++ = 0xffff;
*suptr++ = 0xffff;
/* fit the multicast address */
for (mcptr = dev->mc_list, i = 0; i < mc_cnt; i++, mcptr = mcptr->next) {
addrptr = (u16 *) mcptr->dmi_addr;
*suptr++ = addrptr[0];
*suptr++ = addrptr[1];
*suptr++ = addrptr[2];
}
for (; i<14; i++) {
*suptr++ = 0xffff;
*suptr++ = 0xffff;
*suptr++ = 0xffff;
}
/* prepare the setup frame */
db->tx_insert_ptr = txptr->next_tx_desc;
txptr->tdes1 = cpu_to_le32(0x890000c0);
/* Resource Check and Send the setup packet */
if (!db->tx_packet_cnt) {
/* Resource Empty */
db->tx_packet_cnt++;
txptr->tdes0 = cpu_to_le32(0x80000000);
update_cr6(db->cr6_data | 0x2000, dev->base_addr);
outl(0x1, dev->base_addr + DCR1); /* Issue Tx polling */
update_cr6(db->cr6_data, dev->base_addr);
dev->trans_start = jiffies;
} else
db->tx_queue_cnt++; /* Put in TX queue */
}
/*
* Allocate rx buffer,
* As possible as allocate maxiumn Rx buffer
*/
static void allocate_rx_buffer(struct dmfe_board_info *db)
{
struct rx_desc *rxptr;
struct sk_buff *skb;
rxptr = db->rx_insert_ptr;
while(db->rx_avail_cnt < RX_DESC_CNT) {
if ( ( skb = dev_alloc_skb(RX_ALLOC_SIZE) ) == NULL )
break;
rxptr->rx_skb_ptr = skb; /* FIXME (?) */
rxptr->rdes2 = cpu_to_le32( pci_map_single(db->pdev, skb->data, RX_ALLOC_SIZE, PCI_DMA_FROMDEVICE) );
wmb();
rxptr->rdes0 = cpu_to_le32(0x80000000);
rxptr = rxptr->next_rx_desc;
db->rx_avail_cnt++;
}
db->rx_insert_ptr = rxptr;
}
/*
* Read one word data from the serial ROM
*/
static u16 read_srom_word(long ioaddr, int offset)
{
int i;
u16 srom_data = 0;
long cr9_ioaddr = ioaddr + DCR9;
outl(CR9_SROM_READ, cr9_ioaddr);
outl(CR9_SROM_READ | CR9_SRCS, cr9_ioaddr);
/* Send the Read Command 110b */
SROM_CLK_WRITE(SROM_DATA_1, cr9_ioaddr);
SROM_CLK_WRITE(SROM_DATA_1, cr9_ioaddr);
SROM_CLK_WRITE(SROM_DATA_0, cr9_ioaddr);
/* Send the offset */
for (i = 5; i >= 0; i--) {
srom_data = (offset & (1 << i)) ? SROM_DATA_1 : SROM_DATA_0;
SROM_CLK_WRITE(srom_data, cr9_ioaddr);
}
outl(CR9_SROM_READ | CR9_SRCS, cr9_ioaddr);
for (i = 16; i > 0; i--) {
outl(CR9_SROM_READ | CR9_SRCS | CR9_SRCLK, cr9_ioaddr);
udelay(5);
srom_data = (srom_data << 1) | ((inl(cr9_ioaddr) & CR9_CRDOUT) ? 1 : 0);
outl(CR9_SROM_READ | CR9_SRCS, cr9_ioaddr);
udelay(5);
}
outl(CR9_SROM_READ, cr9_ioaddr);
return srom_data;
}
/*
* Auto sense the media mode
*/
static u8 dmfe_sense_speed(struct dmfe_board_info * db)
{
u8 ErrFlag = 0;
u16 phy_mode;
/* CR6 bit18=0, select 10/100M */
update_cr6( (db->cr6_data & ~0x40000), db->ioaddr);
phy_mode = phy_read(db->ioaddr, db->phy_addr, 1, db->chip_id);
phy_mode = phy_read(db->ioaddr, db->phy_addr, 1, db->chip_id);
if ( (phy_mode & 0x24) == 0x24 ) {
if (db->chip_id == PCI_DM9132_ID) /* DM9132 */
phy_mode = phy_read(db->ioaddr, db->phy_addr, 7, db->chip_id) & 0xf000;
else /* DM9102/DM9102A */
phy_mode = phy_read(db->ioaddr, db->phy_addr, 17, db->chip_id) & 0xf000;
/* printk(DRV_NAME ": Phy_mode %x ",phy_mode); */
switch (phy_mode) {
case 0x1000: db->op_mode = DMFE_10MHF; break;
case 0x2000: db->op_mode = DMFE_10MFD; break;
case 0x4000: db->op_mode = DMFE_100MHF; break;
case 0x8000: db->op_mode = DMFE_100MFD; break;
default: db->op_mode = DMFE_10MHF;
ErrFlag = 1;
break;
}
} else {
db->op_mode = DMFE_10MHF;
DMFE_DBUG(0, "Link Failed :", phy_mode);
ErrFlag = 1;
}
return ErrFlag;
}
/*
* Set 10/100 phyxcer capability
* AUTO mode : phyxcer register4 is NIC capability
* Force mode: phyxcer register4 is the force media
*/
static void dmfe_set_phyxcer(struct dmfe_board_info *db)
{
u16 phy_reg;
/* Select 10/100M phyxcer */
db->cr6_data &= ~0x40000;
update_cr6(db->cr6_data, db->ioaddr);
/* DM9009 Chip: Phyxcer reg18 bit12=0 */
if (db->chip_id == PCI_DM9009_ID) {
phy_reg = phy_read(db->ioaddr, db->phy_addr, 18, db->chip_id) & ~0x1000;
phy_write(db->ioaddr, db->phy_addr, 18, phy_reg, db->chip_id);
}
/* Phyxcer capability setting */
phy_reg = phy_read(db->ioaddr, db->phy_addr, 4, db->chip_id) & ~0x01e0;
if (db->media_mode & DMFE_AUTO) {
/* AUTO Mode */
phy_reg |= db->PHY_reg4;
} else {
/* Force Mode */
switch(db->media_mode) {
case DMFE_10MHF: phy_reg |= 0x20; break;
case DMFE_10MFD: phy_reg |= 0x40; break;
case DMFE_100MHF: phy_reg |= 0x80; break;
case DMFE_100MFD: phy_reg |= 0x100; break;
}
if (db->chip_id == PCI_DM9009_ID) phy_reg &= 0x61;
}
/* Write new capability to Phyxcer Reg4 */
if ( !(phy_reg & 0x01e0)) {
phy_reg|=db->PHY_reg4;
db->media_mode|=DMFE_AUTO;
}
phy_write(db->ioaddr, db->phy_addr, 4, phy_reg, db->chip_id);
/* Restart Auto-Negotiation */
if ( db->chip_type && (db->chip_id == PCI_DM9102_ID) )
phy_write(db->ioaddr, db->phy_addr, 0, 0x1800, db->chip_id);
if ( !db->chip_type )
phy_write(db->ioaddr, db->phy_addr, 0, 0x1200, db->chip_id);
}
/*
* Process op-mode
* AUTO mode : PHY controller in Auto-negotiation Mode
* Force mode: PHY controller in force mode with HUB
* N-way force capability with SWITCH
*/
static void dmfe_process_mode(struct dmfe_board_info *db)
{
u16 phy_reg;
/* Full Duplex Mode Check */
if (db->op_mode & 0x4)
db->cr6_data |= CR6_FDM; /* Set Full Duplex Bit */
else
db->cr6_data &= ~CR6_FDM; /* Clear Full Duplex Bit */
/* Transciver Selection */
if (db->op_mode & 0x10) /* 1M HomePNA */
db->cr6_data |= 0x40000;/* External MII select */
else
db->cr6_data &= ~0x40000;/* Internal 10/100 transciver */
update_cr6(db->cr6_data, db->ioaddr);
/* 10/100M phyxcer force mode need */
if ( !(db->media_mode & 0x18)) {
/* Forece Mode */
phy_reg = phy_read(db->ioaddr, db->phy_addr, 6, db->chip_id);
if ( !(phy_reg & 0x1) ) {
/* parter without N-Way capability */
phy_reg = 0x0;
switch(db->op_mode) {
case DMFE_10MHF: phy_reg = 0x0; break;
case DMFE_10MFD: phy_reg = 0x100; break;
case DMFE_100MHF: phy_reg = 0x2000; break;
case DMFE_100MFD: phy_reg = 0x2100; break;
}
phy_write(db->ioaddr, db->phy_addr, 0, phy_reg, db->chip_id);
if ( db->chip_type && (db->chip_id == PCI_DM9102_ID) )
mdelay(20);
phy_write(db->ioaddr, db->phy_addr, 0, phy_reg, db->chip_id);
}
}
}
/*
* Write a word to Phy register
*/
static void phy_write(unsigned long iobase, u8 phy_addr, u8 offset, u16 phy_data, u32 chip_id)
{
u16 i;
unsigned long ioaddr;
if (chip_id == PCI_DM9132_ID) {
ioaddr = iobase + 0x80 + offset * 4;
outw(phy_data, ioaddr);
} else {
/* DM9102/DM9102A Chip */
ioaddr = iobase + DCR9;
/* Send 33 synchronization clock to Phy controller */
for (i = 0; i < 35; i++)
phy_write_1bit(ioaddr, PHY_DATA_1);
/* Send start command(01) to Phy */
phy_write_1bit(ioaddr, PHY_DATA_0);
phy_write_1bit(ioaddr, PHY_DATA_1);
/* Send write command(01) to Phy */
phy_write_1bit(ioaddr, PHY_DATA_0);
phy_write_1bit(ioaddr, PHY_DATA_1);
/* Send Phy address */
for (i = 0x10; i > 0; i = i >> 1)
phy_write_1bit(ioaddr, phy_addr & i ? PHY_DATA_1 : PHY_DATA_0);
/* Send register address */
for (i = 0x10; i > 0; i = i >> 1)
phy_write_1bit(ioaddr, offset & i ? PHY_DATA_1 : PHY_DATA_0);
/* written trasnition */
phy_write_1bit(ioaddr, PHY_DATA_1);
phy_write_1bit(ioaddr, PHY_DATA_0);
/* Write a word data to PHY controller */
for ( i = 0x8000; i > 0; i >>= 1)
phy_write_1bit(ioaddr, phy_data & i ? PHY_DATA_1 : PHY_DATA_0);
}
}
/*
* Read a word data from phy register
*/
static u16 phy_read(unsigned long iobase, u8 phy_addr, u8 offset, u32 chip_id)
{
int i;
u16 phy_data;
unsigned long ioaddr;
if (chip_id == PCI_DM9132_ID) {
/* DM9132 Chip */
ioaddr = iobase + 0x80 + offset * 4;
phy_data = inw(ioaddr);
} else {
/* DM9102/DM9102A Chip */
ioaddr = iobase + DCR9;
/* Send 33 synchronization clock to Phy controller */
for (i = 0; i < 35; i++)
phy_write_1bit(ioaddr, PHY_DATA_1);
/* Send start command(01) to Phy */
phy_write_1bit(ioaddr, PHY_DATA_0);
phy_write_1bit(ioaddr, PHY_DATA_1);
/* Send read command(10) to Phy */
phy_write_1bit(ioaddr, PHY_DATA_1);
phy_write_1bit(ioaddr, PHY_DATA_0);
/* Send Phy address */
for (i = 0x10; i > 0; i = i >> 1)
phy_write_1bit(ioaddr, phy_addr & i ? PHY_DATA_1 : PHY_DATA_0);
/* Send register address */
for (i = 0x10; i > 0; i = i >> 1)
phy_write_1bit(ioaddr, offset & i ? PHY_DATA_1 : PHY_DATA_0);
/* Skip transition state */
phy_read_1bit(ioaddr);
/* read 16bit data */
for (phy_data = 0, i = 0; i < 16; i++) {
phy_data <<= 1;
phy_data |= phy_read_1bit(ioaddr);
}
}
return phy_data;
}
/*
* Write one bit data to Phy Controller
*/
static void phy_write_1bit(unsigned long ioaddr, u32 phy_data)
{
outl(phy_data, ioaddr); /* MII Clock Low */
udelay(1);
outl(phy_data | MDCLKH, ioaddr); /* MII Clock High */
udelay(1);
outl(phy_data, ioaddr); /* MII Clock Low */
udelay(1);
}
/*
* Read one bit phy data from PHY controller
*/
static u16 phy_read_1bit(unsigned long ioaddr)
{
u16 phy_data;
outl(0x50000, ioaddr);
udelay(1);
phy_data = ( inl(ioaddr) >> 19 ) & 0x1;
outl(0x40000, ioaddr);
udelay(1);
return phy_data;
}
/*
* Parser SROM and media mode
*/
static void dmfe_parse_srom(struct dmfe_board_info * db)
{
char * srom = db->srom;
int dmfe_mode, tmp_reg;
DMFE_DBUG(0, "dmfe_parse_srom() ", 0);
/* Init CR15 */
db->cr15_data = CR15_DEFAULT;
/* Check SROM Version */
if ( ( (int) srom[18] & 0xff) == SROM_V41_CODE) {
/* SROM V4.01 */
/* Get NIC support media mode */
db->NIC_capability = le16_to_cpup((__le16 *)srom + 34/2);
db->PHY_reg4 = 0;
for (tmp_reg = 1; tmp_reg < 0x10; tmp_reg <<= 1) {
switch( db->NIC_capability & tmp_reg ) {
case 0x1: db->PHY_reg4 |= 0x0020; break;
case 0x2: db->PHY_reg4 |= 0x0040; break;
case 0x4: db->PHY_reg4 |= 0x0080; break;
case 0x8: db->PHY_reg4 |= 0x0100; break;
}
}
/* Media Mode Force or not check */
dmfe_mode = le32_to_cpup((__le32 *)srom + 34/4) &
le32_to_cpup((__le32 *)srom + 36/4);
switch(dmfe_mode) {
case 0x4: dmfe_media_mode = DMFE_100MHF; break; /* 100MHF */
case 0x2: dmfe_media_mode = DMFE_10MFD; break; /* 10MFD */
case 0x8: dmfe_media_mode = DMFE_100MFD; break; /* 100MFD */
case 0x100:
case 0x200: dmfe_media_mode = DMFE_1M_HPNA; break;/* HomePNA */
}
/* Special Function setting */
/* VLAN function */
if ( (SF_mode & 0x1) || (srom[43] & 0x80) )
db->cr15_data |= 0x40;
/* Flow Control */
if ( (SF_mode & 0x2) || (srom[40] & 0x1) )
db->cr15_data |= 0x400;
/* TX pause packet */
if ( (SF_mode & 0x4) || (srom[40] & 0xe) )
db->cr15_data |= 0x9800;
}
/* Parse HPNA parameter */
db->HPNA_command = 1;
/* Accept remote command or not */
if (HPNA_rx_cmd == 0)
db->HPNA_command |= 0x8000;
/* Issue remote command & operation mode */
if (HPNA_tx_cmd == 1)
switch(HPNA_mode) { /* Issue Remote Command */
case 0: db->HPNA_command |= 0x0904; break;
case 1: db->HPNA_command |= 0x0a00; break;
case 2: db->HPNA_command |= 0x0506; break;
case 3: db->HPNA_command |= 0x0602; break;
}
else
switch(HPNA_mode) { /* Don't Issue */
case 0: db->HPNA_command |= 0x0004; break;
case 1: db->HPNA_command |= 0x0000; break;
case 2: db->HPNA_command |= 0x0006; break;
case 3: db->HPNA_command |= 0x0002; break;
}
/* Check DM9801 or DM9802 present or not */
db->HPNA_present = 0;
update_cr6(db->cr6_data|0x40000, db->ioaddr);
tmp_reg = phy_read(db->ioaddr, db->phy_addr, 3, db->chip_id);
if ( ( tmp_reg & 0xfff0 ) == 0xb900 ) {
/* DM9801 or DM9802 present */
db->HPNA_timer = 8;
if ( phy_read(db->ioaddr, db->phy_addr, 31, db->chip_id) == 0x4404) {
/* DM9801 HomeRun */
db->HPNA_present = 1;
dmfe_program_DM9801(db, tmp_reg);
} else {
/* DM9802 LongRun */
db->HPNA_present = 2;
dmfe_program_DM9802(db);
}
}
}
/*
* Init HomeRun DM9801
*/
static void dmfe_program_DM9801(struct dmfe_board_info * db, int HPNA_rev)
{
uint reg17, reg25;
if ( !HPNA_NoiseFloor ) HPNA_NoiseFloor = DM9801_NOISE_FLOOR;
switch(HPNA_rev) {
case 0xb900: /* DM9801 E3 */
db->HPNA_command |= 0x1000;
reg25 = phy_read(db->ioaddr, db->phy_addr, 24, db->chip_id);
reg25 = ( (reg25 + HPNA_NoiseFloor) & 0xff) | 0xf000;
reg17 = phy_read(db->ioaddr, db->phy_addr, 17, db->chip_id);
break;
case 0xb901: /* DM9801 E4 */
reg25 = phy_read(db->ioaddr, db->phy_addr, 25, db->chip_id);
reg25 = (reg25 & 0xff00) + HPNA_NoiseFloor;
reg17 = phy_read(db->ioaddr, db->phy_addr, 17, db->chip_id);
reg17 = (reg17 & 0xfff0) + HPNA_NoiseFloor + 3;
break;
case 0xb902: /* DM9801 E5 */
case 0xb903: /* DM9801 E6 */
default:
db->HPNA_command |= 0x1000;
reg25 = phy_read(db->ioaddr, db->phy_addr, 25, db->chip_id);
reg25 = (reg25 & 0xff00) + HPNA_NoiseFloor - 5;
reg17 = phy_read(db->ioaddr, db->phy_addr, 17, db->chip_id);
reg17 = (reg17 & 0xfff0) + HPNA_NoiseFloor;
break;
}
phy_write(db->ioaddr, db->phy_addr, 16, db->HPNA_command, db->chip_id);
phy_write(db->ioaddr, db->phy_addr, 17, reg17, db->chip_id);
phy_write(db->ioaddr, db->phy_addr, 25, reg25, db->chip_id);
}
/*
* Init HomeRun DM9802
*/
static void dmfe_program_DM9802(struct dmfe_board_info * db)
{
uint phy_reg;
if ( !HPNA_NoiseFloor ) HPNA_NoiseFloor = DM9802_NOISE_FLOOR;
phy_write(db->ioaddr, db->phy_addr, 16, db->HPNA_command, db->chip_id);
phy_reg = phy_read(db->ioaddr, db->phy_addr, 25, db->chip_id);
phy_reg = ( phy_reg & 0xff00) + HPNA_NoiseFloor;
phy_write(db->ioaddr, db->phy_addr, 25, phy_reg, db->chip_id);
}
/*
* Check remote HPNA power and speed status. If not correct,
* issue command again.
*/
static void dmfe_HPNA_remote_cmd_chk(struct dmfe_board_info * db)
{
uint phy_reg;
/* Got remote device status */
phy_reg = phy_read(db->ioaddr, db->phy_addr, 17, db->chip_id) & 0x60;
switch(phy_reg) {
case 0x00: phy_reg = 0x0a00;break; /* LP/LS */
case 0x20: phy_reg = 0x0900;break; /* LP/HS */
case 0x40: phy_reg = 0x0600;break; /* HP/LS */
case 0x60: phy_reg = 0x0500;break; /* HP/HS */
}
/* Check remote device status match our setting ot not */
if ( phy_reg != (db->HPNA_command & 0x0f00) ) {
phy_write(db->ioaddr, db->phy_addr, 16, db->HPNA_command, db->chip_id);
db->HPNA_timer=8;
} else
db->HPNA_timer=600; /* Match, every 10 minutes, check */
}
static struct pci_device_id dmfe_pci_tbl[] = {
{ 0x1282, 0x9132, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_DM9132_ID },
{ 0x1282, 0x9102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_DM9102_ID },
{ 0x1282, 0x9100, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_DM9100_ID },
{ 0x1282, 0x9009, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_DM9009_ID },
{ 0, }
};
MODULE_DEVICE_TABLE(pci, dmfe_pci_tbl);
static struct pci_driver dmfe_driver = {
.name = "dmfe",
.id_table = dmfe_pci_tbl,
.probe = dmfe_init_one,
.remove = __devexit_p(dmfe_remove_one),
};
MODULE_AUTHOR("Sten Wang, sten_wang@davicom.com.tw");
MODULE_DESCRIPTION("Davicom DM910X fast ethernet driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
module_param(debug, int, 0);
module_param(mode, byte, 0);
module_param(cr6set, int, 0);
module_param(chkmode, byte, 0);
module_param(HPNA_mode, byte, 0);
module_param(HPNA_rx_cmd, byte, 0);
module_param(HPNA_tx_cmd, byte, 0);
module_param(HPNA_NoiseFloor, byte, 0);
module_param(SF_mode, byte, 0);
MODULE_PARM_DESC(debug, "Davicom DM9xxx enable debugging (0-1)");
MODULE_PARM_DESC(mode, "Davicom DM9xxx: Bit 0: 10/100Mbps, bit 2: duplex, bit 8: HomePNA");
MODULE_PARM_DESC(SF_mode, "Davicom DM9xxx special function (bit 0: VLAN, bit 1 Flow Control, bit 2: TX pause packet)");
/* Description:
* when user used insmod to add module, system invoked init_module()
* to initilize and register.
*/
static int __init dmfe_init_module(void)
{
int rc;
printk(version);
printed_version = 1;
DMFE_DBUG(0, "init_module() ", debug);
if (debug)
dmfe_debug = debug; /* set debug flag */
if (cr6set)
dmfe_cr6_user_set = cr6set;
switch(mode) {
case DMFE_10MHF:
case DMFE_100MHF:
case DMFE_10MFD:
case DMFE_100MFD:
case DMFE_1M_HPNA:
dmfe_media_mode = mode;
break;
default:dmfe_media_mode = DMFE_AUTO;
break;
}
if (HPNA_mode > 4)
HPNA_mode = 0; /* Default: LP/HS */
if (HPNA_rx_cmd > 1)
HPNA_rx_cmd = 0; /* Default: Ignored remote cmd */
if (HPNA_tx_cmd > 1)
HPNA_tx_cmd = 0; /* Default: Don't issue remote cmd */
if (HPNA_NoiseFloor > 15)
HPNA_NoiseFloor = 0;
rc = pci_module_init(&dmfe_driver);
if (rc < 0)
return rc;
return 0;
}
/*
* Description:
* when user used rmmod to delete module, system invoked clean_module()
* to un-register all registered services.
*/
static void __exit dmfe_cleanup_module(void)
{
DMFE_DBUG(0, "dmfe_clean_module() ", debug);
pci_unregister_driver(&dmfe_driver);
}
module_init(dmfe_init_module);
module_exit(dmfe_cleanup_module);
