1/************************************************** 2 * * 3 * Definition of D-Link Ethernet Pocket adapter * 4 * * 5 **************************************************/ 6/* 7 * D-Link Ethernet pocket adapter ports 8 */ 9/* 10 * OK, so I'm cheating, but there are an awful lot of 11 * reads and writes in order to get anything in and out 12 * of the DE-600 with 4 bits at a time in the parallel port, 13 * so every saved instruction really helps :-) 14 */ 15 16#ifndef DE600_IO 17#define DE600_IO 0x378 18#endif 19 20#define DATA_PORT (DE600_IO) 21#define STATUS_PORT (DE600_IO + 1) 22#define COMMAND_PORT (DE600_IO + 2) 23 24#ifndef DE600_IRQ 25#define DE600_IRQ 7 26#endif 27/* 28 * It really should look like this, and autoprobing as well... 29 * 30#define DATA_PORT (dev->base_addr + 0) 31#define STATUS_PORT (dev->base_addr + 1) 32#define COMMAND_PORT (dev->base_addr + 2) 33#define DE600_IRQ dev->irq 34 */ 35 36/* 37 * D-Link COMMAND_PORT commands 38 */ 39#define SELECT_NIC 0x04 /* select Network Interface Card */ 40#define SELECT_PRN 0x1c /* select Printer */ 41#define NML_PRN 0xec /* normal Printer situation */ 42#define IRQEN 0x10 /* enable IRQ line */ 43 44/* 45 * D-Link STATUS_PORT 46 */ 47#define RX_BUSY 0x80 48#define RX_GOOD 0x40 49#define TX_FAILED16 0x10 50#define TX_BUSY 0x08 51 52/* 53 * D-Link DATA_PORT commands 54 * command in low 4 bits 55 * data in high 4 bits 56 * select current data nibble with HI_NIBBLE bit 57 */ 58#define WRITE_DATA 0x00 /* write memory */ 59#define READ_DATA 0x01 /* read memory */ 60#define STATUS 0x02 /* read status register */ 61#define COMMAND 0x03 /* write command register (see COMMAND below) */ 62#define NULL_COMMAND 0x04 /* null command */ 63#define RX_LEN 0x05 /* read received packet length */ 64#define TX_ADDR 0x06 /* set adapter transmit memory address */ 65#define RW_ADDR 0x07 /* set adapter read/write memory address */ 66#define HI_NIBBLE 0x08 /* read/write the high nibble of data, 67 or-ed with rest of command */ 68 69/* 70 * command register, accessed through DATA_PORT with low bits = COMMAND 71 */ 72#define RX_ALL 0x01 /* PROMISCUOUS */ 73#define RX_BP 0x02 /* default: BROADCAST & PHYSICAL ADDRESS */ 74#define RX_MBP 0x03 /* MULTICAST, BROADCAST & PHYSICAL ADDRESS */ 75 76#define TX_ENABLE 0x04 /* bit 2 */ 77#define RX_ENABLE 0x08 /* bit 3 */ 78 79#define RESET 0x80 /* set bit 7 high */ 80#define STOP_RESET 0x00 /* set bit 7 low */ 81 82/* 83 * data to command register 84 * (high 4 bits in write to DATA_PORT) 85 */ 86#define RX_PAGE2_SELECT 0x10 /* bit 4, only 2 pages to select */ 87#define RX_BASE_PAGE 0x20 /* bit 5, always set when specifying RX_ADDR */ 88#define FLIP_IRQ 0x40 /* bit 6 */ 89 90/* 91 * D-Link adapter internal memory: 92 * 93 * 0-2K 1:st transmit page (send from pointer up to 2K) 94 * 2-4K 2:nd transmit page (send from pointer up to 4K) 95 * 96 * 4-6K 1:st receive page (data from 4K upwards) 97 * 6-8K 2:nd receive page (data from 6K upwards) 98 * 99 * 8K+ Adapter ROM (contains magic code and last 3 bytes of Ethernet address) 100 */ 101#define MEM_2K 0x0800 /* 2048 */ 102#define MEM_4K 0x1000 /* 4096 */ 103#define MEM_6K 0x1800 /* 6144 */ 104#define NODE_ADDRESS 0x2000 /* 8192 */ 105 106#define RUNT 60 /* Too small Ethernet packet */ 107 108/************************************************** 109 * * 110 * End of definition * 111 * * 112 **************************************************/ 113 114/* 115 * Index to functions, as function prototypes. 116 */ 117/* Routines used internally. (See "convenience macros") */ 118static u8 de600_read_status(struct net_device *dev); 119static u8 de600_read_byte(unsigned char type, struct net_device *dev); 120 121/* Put in the device structure. */ 122static int de600_open(struct net_device *dev); 123static int de600_close(struct net_device *dev); 124static int de600_start_xmit(struct sk_buff *skb, struct net_device *dev); 125 126/* Dispatch from interrupts. */ 127static irqreturn_t de600_interrupt(int irq, void *dev_id); 128static int de600_tx_intr(struct net_device *dev, int irq_status); 129static void de600_rx_intr(struct net_device *dev); 130 131/* Initialization */ 132static void trigger_interrupt(struct net_device *dev); 133static int adapter_init(struct net_device *dev); 134 135/* 136 * Convenience macros/functions for D-Link adapter 137 */ 138 139#define select_prn() outb_p(SELECT_PRN, COMMAND_PORT); DE600_SLOW_DOWN 140#define select_nic() outb_p(SELECT_NIC, COMMAND_PORT); DE600_SLOW_DOWN 141 142/* Thanks for hints from Mark Burton <markb@ordern.demon.co.uk> */ 143#define de600_put_byte(data) ( \ 144 outb_p(((data) << 4) | WRITE_DATA , DATA_PORT), \ 145 outb_p(((data) & 0xf0) | WRITE_DATA | HI_NIBBLE, DATA_PORT)) 146 147/* 148 * The first two outb_p()'s below could perhaps be deleted if there 149 * would be more delay in the last two. Not certain about it yet... 150 */ 151#define de600_put_command(cmd) ( \ 152 outb_p(( rx_page << 4) | COMMAND , DATA_PORT), \ 153 outb_p(( rx_page & 0xf0) | COMMAND | HI_NIBBLE, DATA_PORT), \ 154 outb_p(((rx_page | cmd) << 4) | COMMAND , DATA_PORT), \ 155 outb_p(((rx_page | cmd) & 0xf0) | COMMAND | HI_NIBBLE, DATA_PORT)) 156 157#define de600_setup_address(addr,type) ( \ 158 outb_p((((addr) << 4) & 0xf0) | type , DATA_PORT), \ 159 outb_p(( (addr) & 0xf0) | type | HI_NIBBLE, DATA_PORT), \ 160 outb_p((((addr) >> 4) & 0xf0) | type , DATA_PORT), \ 161 outb_p((((addr) >> 8) & 0xf0) | type | HI_NIBBLE, DATA_PORT)) 162 163#define rx_page_adr() ((rx_page & RX_PAGE2_SELECT)?(MEM_6K):(MEM_4K)) 164 165/* Flip bit, only 2 pages */ 166#define next_rx_page() (rx_page ^= RX_PAGE2_SELECT) 167 168#define tx_page_adr(a) (((a) + 1) * MEM_2K) 169