/*
dm9ks.c: Version 2.03 2005/10/17
A Davicom DM9000A/DM9010 ISA NIC fast Ethernet driver for Linux.
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.
(C)Copyright 1997-2005 DAVICOM Semiconductor,Inc. All Rights Reserved.
V1.00 10/13/2004 Add new function Early transmit & IP/TCP/UDP Checksum
offload enable & flow control is default
V1.1 12/29/2004 Add Two packet mode & modify RX function
V1.2 01/14/2005 Add Early transmit mode
V1.3 03/02/2005 Support kernel 2.6
v1.33 06/08/2005 #define DM9KS_MDRAL 0xf4
#define DM9KS_MDRAH 0xf5
V2.00 Spenser - 01/10/2005
- Modification for PXA270 MAINSTONE.
- Modified dmfe_tx_done().
- Add dmfe_timeout().
V2.01 10/07/2005 Modified dmfe_timer()
Dected network speed 10/100M
V2.02 10/12/2005 Use link change to chage db->Speed
dmfe_open() wait for Link OK
V2.03 11/22/2005 Power-off and Power-on PHY in dmfe_init()
support IOL
*/
#if defined(MODVERSIONS)
#include <linux/modversions.h>
#endif
#include <linux/config.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/ioport.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/version.h>
#include <asm/dma.h>
#include <linux/spinlock.h>
#include <linux/crc32.h>
#ifdef CONFIG_ARCH_MAINSTONE
#include <asm/io.h>
#include <asm/hardware.h>
#include <asm/irq.h>
#endif
/* Board/System/Debug information/definition ---------------- */
#define DM9KS_ID 0x90000A46
#define DM9010_ID 0x90100A46
/*-------register name-----------------------*/
#define DM9KS_NCR 0x00 /* Network control Reg.*/
#define DM9KS_NSR 0x01 /* Network Status Reg.*/
#define DM9KS_TCR 0x02 /* TX control Reg.*/
#define DM9KS_RXCR 0x05 /* RX control Reg.*/
#define DM9KS_BPTR 0x08
#define DM9KS_EPCR 0x0b
#define DM9KS_EPAR 0x0c
#define DM9KS_EPDRL 0x0d
#define DM9KS_EPDRH 0x0e
#define DM9KS_GPR 0x1f /* General purpose register */
#define DM9KS_TCR2 0x2d
#define DM9KS_SMCR 0x2f /* Special Mode Control Reg.*/
#define DM9KS_ETXCSR 0x30 /* Early Transmit control/status Reg.*/
#define DM9KS_TCCR 0x31 /* Checksum cntrol Reg. */
#define DM9KS_RCSR 0x32 /* Receive Checksum status Reg.*/
#define DM9KS_MRCMDX 0xf0
#define DM9KS_MRCMD 0xf2
#define DM9KS_MDRAL 0xf4
#define DM9KS_MDRAH 0xf5
#define DM9KS_MWCMD 0xf8
#define DM9KS_TXPLL 0xfc
#define DM9KS_TXPLH 0xfd
#define DM9KS_ISR 0xfe
#define DM9KS_IMR 0xff
/*---------------------------------------------*/
#define DM9KS_REG05 0x30 /* SKIP_CRC/SKIP_LONG */
#define DM9KS_REGFF 0xA3 /* IMR */
#define DM9KS_DISINTR 0x80
#define DM9KS_PHY 0x40 /* PHY address 0x01 */
#define DM9KS_PKT_RDY 0x01 /* Packet ready to receive */
/* Added for PXA of MAINSTONE */
#ifdef CONFIG_ARCH_MAINSTONE
#include <asm/arch/mainstone.h>
#define DM9KS_MIN_IO (MST_ETH_PHYS + 0x300)
#define DM9KS_MAX_IO (MST_ETH_PHYS + 0x370)
#define DM9K_IRQ MAINSTONE_IRQ(3)
#else
#define DM9KS_MIN_IO 0x300
#define DM9KS_MAX_IO 0x370
#define DM9K_IRQ 3
#endif
#define DM9KS_VID_L 0x28
#define DM9KS_VID_H 0x29
#define DM9KS_PID_L 0x2A
#define DM9KS_PID_H 0x2B
#define DM9KS_RX_INTR 0x01
#define DM9KS_TX_INTR 0x02
#define DM9KS_LINK_INTR 0x20
#define DM9KS_DWORD_MODE 1
#define DM9KS_BYTE_MODE 2
#define DM9KS_WORD_MODE 0
#define TRUE 1
#define FALSE 0
/* Number of continuous Rx packets */
#define CONT_RX_PKT_CNT 10
#define DMFE_TIMER_WUT jiffies+(HZ*5) /* timer wakeup time : 5 second */
#if defined(DM9KS_DEBUG)
#define DMFE_DBUG(dbug_now, msg, vaule)\
if (dmfe_debug||dbug_now) printk(KERN_ERR "dmfe: %s %x\n", msg, vaule)
#else
#define DMFE_DBUG(dbug_now, msg, vaule)\
if (dbug_now) printk(KERN_ERR "dmfe: %s %x\n", msg, vaule)
#endif
#ifndef CONFIG_ARCH_MAINSTONE
#pragma pack(push, 1)
#endif
typedef struct _RX_DESC
{
u8 rxbyte;
u8 status;
u16 length;
}RX_DESC;
typedef union{
u8 buf[4];
RX_DESC desc;
} rx_t;
#ifndef CONFIG_ARCH_MAINSTONE
#pragma pack(pop)
#endif
enum DM9KS_PHY_mode {
DM9KS_10MHD = 0,
DM9KS_100MHD = 1,
DM9KS_10MFD = 4,
DM9KS_100MFD = 5,
DM9KS_AUTO = 8,
};
/* Structure/enum declaration ------------------------------- */
typedef struct board_info {
u32 reset_counter; /* counter: RESET */
u32 reset_tx_timeout; /* RESET caused by TX Timeout */
u32 io_addr; /* Register I/O base address */
u32 io_data; /* Data I/O address */
int tx_pkt_cnt;
u8 op_mode; /* PHY operation mode */
u8 io_mode; /* 0:word, 2:byte */
u8 device_wait_reset; /* device state */
u8 Speed; /* current speed */
int cont_rx_pkt_cnt;/* current number of continuos rx packets */
struct timer_list timer;
struct net_device_stats stats;
unsigned char srom[128];
spinlock_t lock;
} board_info_t;
/* Global variable declaration ----------------------------- */
/*static int dmfe_debug = 0;*/
static struct net_device * dmfe_dev = NULL;
/* For module input parameter */
static int mode = DM9KS_AUTO;
static int media_mode = DM9KS_AUTO;
static u8 irq = DM9K_IRQ;
static u32 iobase = DM9KS_MIN_IO;
/* function declaration ------------------------------------- */
int dmfe_probe(struct net_device *);
static int dmfe_open(struct net_device *);
static int dmfe_start_xmit(struct sk_buff *, struct net_device *);
static void dmfe_tx_done(unsigned long);
static void dmfe_packet_receive(struct net_device *);
static int dmfe_stop(struct net_device *);
static struct net_device_stats * dmfe_get_stats(struct net_device *);
static int dmfe_do_ioctl(struct net_device *, struct ifreq *, int);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
static void dmfe_interrupt(int , void *, struct pt_regs *);
#else
static irqreturn_t dmfe_interrupt(int , void *, struct pt_regs *);
#endif
static void dmfe_timer(unsigned long);
static void dmfe_init_dm9000(struct net_device *);
static unsigned long cal_CRC(unsigned char *, unsigned int, u8);
static u8 ior(board_info_t *, int);
static void iow(board_info_t *, int, u8);
static u16 phy_read(board_info_t *, int);
static void phy_write(board_info_t *, int, u16);
static u16 read_srom_word(board_info_t *, int);
static void dm9000_hash_table(struct net_device *);
static void dmfe_timeout(struct net_device *);
static void dmfe_reset(struct net_device *);
#if defined(CHECKSUM)
static u8 check_rx_ready(u8);
#endif
//DECLARE_TASKLET(dmfe_tx_tasklet,dmfe_tx_done,0);
/* DM9000 network baord routine ---------------------------- */
/*
Search DM9000 board, allocate space and register it
*/
struct net_device * __init dmfe_probe1(void)
{
struct net_device *dev;
int err;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
dev = init_etherdev(NULL, sizeof(struct board_info));
ether_setup(dev);
#else
dev= alloc_etherdev(sizeof(struct board_info));
#endif
if(!dev)
return ERR_PTR(-ENOMEM);
SET_MODULE_OWNER(dev);
err = dmfe_probe(dev);
if (err)
goto out;
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)
err = register_netdev(dev);
if (err)
goto out1;
#endif
return dev;
out1:
release_region(dev->base_addr,2);
out:
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
kfree(dev);
#else
free_netdev(dev);
#endif
return ERR_PTR(err);
}
int __init dmfe_probe(struct net_device *dev)
{
struct board_info *db; /* Point a board information structure */
u32 id_val;
u16 i, dm9000_found = FALSE;
DMFE_DBUG(0, "dmfe_probe()",0);
/* Search All DM9000 serial NIC */
do {
outb(DM9KS_VID_L, iobase);
id_val = inb(iobase + 4);
outb(DM9KS_VID_H, iobase);
id_val |= inb(iobase + 4) << 8;
outb(DM9KS_PID_L, iobase);
id_val |= i