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研发客服一般网卡驱动程序厂商会给我们提供一份模板驱动，我们的工作就是需要根据自己的需要更改这个模板驱动
1、DM9000C的硬件连接
硬件连接图如下所示：它接在S3C2440的BANK4内存控制器上，它只占用8个字节的长度，并且是16bit的位宽。
下面介绍一下DM9000C的主要引脚的功能：SD0-SD15位16bit的数据引脚接口；IOR为读使能信号，低电平有效；IOW为写使能信号，低电平有效；CS为片选信号，低电平有效；CMD为数据与索引选择信号，高电平表数据，低电平表索引，它连接到S3C2440的LADDR2地址引脚；INT表示中断引脚数据发送成功或接收到数据可以产生中断，高电平有效，所以对于S3C2440来说需要设置上升沿触发来触发中断。
2、DM9000C的驱动代码编写
直接贴上修改好的代码：此代码是在厂家提供的驱动源码基础上依照S3C2440的应用修改的。
1 /*
2
3 dm9ks.c: Version 2.08 2007/02/12
4
5 A Davicom DM9000/DM9010 ISA NIC fast Ethernet driver for Linux.
6
7 This program is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public License
9 as published by the Free Software Foundation; either version 2
10 of the License, or (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17
18 (C)Copyright 1997-2007 DAVICOM Semiconductor,Inc. All Rights Reserved.
19
20 V2.00 Spenser - 01/10/2005
21 - Modification for PXA270 MAINSTONE.
22 - Modified dmfe_tx_done().
23 - Add dmfe_timeout().
24 V2.01 10/07/2005 -Modified dmfe_timer()
25 -Dected network speed 10/100M
26 V2.02 10/12/2005 -Use link change to chage db->Speed
27 -dmfe_open() wait for Link OK
28 V2.03 11/22/2005 -Power-off and Power-on PHY in dmfe_init_dm9000()
29 -support IOL
30 V2.04 12/13/2005 -delay 1.6s between power-on and power-off in
31 dmfe_init_dm9000()
32 -set LED mode 1 in dmfe_init_dm9000()
33 -add data bus driving capability in dmfe_init_dm9000()
34 (optional)
35 10/3/2006 -Add DM8606 read/write function by MDC and MDIO
36 V2.06 01/03/2007 -CONT_RX_PKT_CNT=0xFFFF
37 -modify dmfe_tx_done function
38 -check RX FIFO pointer
39 -if using physical address, re-define I/O function
40 -add db->cont_rx_pkt_cnt=0 at the front of dmfe_packet_receive()
41 V2.08 02/12/2007 -module parameter macro
42 2.4 MODULE_PARM
43 2.6 module_param
44 -remove #include
45 -fix dmfe_interrupt for kernel 2.6.20
46 V2.09 05/24/2007 -support ethtool and mii-tool
47 05/30/2007 -fix the driver bug when ifconfig eth0 (-)promisc and (-)allmulti.
48 06/05/2007 -fix dm9000b issue(ex. 10M TX idle=65mA, 10M harmonic)
49 -add flow control function (option)
50 10/01/2007 -Add #include
51 -Modyfy dmfe_do_ioctl for kernel 2.6.7
52 11/23/2007 -Add TDBUG to check TX FIFO pointer shift
53 - Remove check_rx_ready()
54 - Add #define CHECKSUM to modify CHECKSUM function
55 12/20/2007 -Modify TX timeout routine(+)check TCR&0x01
56
57 */
58
59 //#define CHECKSUM
60 //#define TDBUG /* check TX FIFO pointer */
61 //#define RDBUG /* check RX FIFO pointer */
62 //#define DM8606
63
64 #define DRV_NAME 'dm9KS'
65 #define DRV_VERSION '2.09'
66 #define DRV_RELDATE '2007-11-22'
67
68 #ifdef MODVERSIONS
69 #include
70 #endif
71
72 //#include
73 #include
74 #include
75 #include
76 #include
77 #include
78 #include
79 #include
80 #include
81 #include
82 #include
83 #include
84 #include
85 #include
86 #include
87
88 #ifdef CONFIG_ARCH_MAINSTONE
89 #include
90 #include
91 #include
92 #endif
93
94 #include
95 #include
96 #include
97 #include
98
99
100 /* Board/System/Debug information/definition ---------------- */
101
102 #define DM9KS_ID 0x90000A46
103 #define DM9010_ID 0x90100A46
104 /*-------register name-----------------------*/
105 #define DM9KS_NCR 0x00 /* Network control Reg.*/
106 #define DM9KS_NSR 0x01 /* Network Status Reg.*/
107 #define DM9KS_TCR 0x02 /* TX control Reg.*/
108 #define DM9KS_RXCR 0x05 /* RX control Reg.*/
109 #define DM9KS_BPTR 0x08
110 #define DM9KS_FCTR 0x09
111 #define DM9KS_FCR 0x0a
112 #define DM9KS_EPCR 0x0b
113 #define DM9KS_EPAR 0x0c
114 #define DM9KS_EPDRL 0x0d
115 #define DM9KS_EPDRH 0x0e
116 #define DM9KS_GPR 0x1f /* General purpose register */
117 #define DM9KS_CHIPR 0x2c
118 #define DM9KS_TCR2 0x2d
119 #define DM9KS_SMCR 0x2f /* Special Mode Control Reg.*/
120 #define DM9KS_ETXCSR 0x30 /* Early Transmit control/status Reg.*/
121 #define DM9KS_TCCR 0x31 /* Checksum cntrol Reg. */
122 #define DM9KS_RCSR 0x32 /* Receive Checksum status Reg.*/
123 #define DM9KS_BUSCR 0x38
124 #define DM9KS_MRCMDX 0xf0
125 #define DM9KS_MRCMD 0xf2
126 #define DM9KS_MDRAL 0xf4
127 #define DM9KS_MDRAH 0xf5
128 #define DM9KS_MWCMD 0xf8
129 #define DM9KS_MDWAL 0xfa
130 #define DM9KS_MDWAH 0xfb
131 #define DM9KS_TXPLL 0xfc
132 #define DM9KS_TXPLH 0xfd
133 #define DM9KS_ISR 0xfe
134 #define DM9KS_IMR 0xff
135 /*---------------------------------------------*/
136 #define DM9KS_REG05 0x30 /* SKIP_CRC/SKIP_LONG */
137 #define DM9KS_REGFF 0xA3 /* IMR */
138 #define DM9KS_DISINTR 0x80
139
140 #define DM9KS_PHY 0x40 /* PHY address 0x01 */
141 #define DM9KS_PKT_RDY 0x01 /* Packet ready to receive */
142
143 /* Added for PXA of MAINSTONE */
144 #ifdef CONFIG_ARCH_MAINSTONE
145 #include
146 #define DM9KS_MIN_IO (MST_ETH_PHYS + 0x300)
147 #define DM9KS_MAX_IO (MST_ETH_PHYS + 0x370)
148 #define DM9K_IRQ MAINSTONE_IRQ(3)
149 #else
150 #define DM9KS_MIN_IO 0x300
151 #define DM9KS_MAX_IO 0x370
152 #define DM9KS_IRQ 3
153 #endif
154
155 #define DM9KS_VID_L 0x28