| /************************************************** |
| * * |
| * Definition of D-Link Ethernet Pocket adapter * |
| * * |
| **************************************************/ |
| /* |
| * D-Link Ethernet pocket adapter ports |
| */ |
| /* |
| * OK, so I'm cheating, but there are an awful lot of |
| * reads and writes in order to get anything in and out |
| * of the DE-600 with 4 bits at a time in the parallel port, |
| * so every saved instruction really helps :-) |
| */ |
| |
| #ifndef DE600_IO |
| #define DE600_IO 0x378 |
| #endif |
| |
| #define DATA_PORT (DE600_IO) |
| #define STATUS_PORT (DE600_IO + 1) |
| #define COMMAND_PORT (DE600_IO + 2) |
| |
| #ifndef DE600_IRQ |
| #define DE600_IRQ 7 |
| #endif |
| /* |
| * It really should look like this, and autoprobing as well... |
| * |
| #define DATA_PORT (dev->base_addr + 0) |
| #define STATUS_PORT (dev->base_addr + 1) |
| #define COMMAND_PORT (dev->base_addr + 2) |
| #define DE600_IRQ dev->irq |
| */ |
| |
| /* |
| * D-Link COMMAND_PORT commands |
| */ |
| #define SELECT_NIC 0x04 /* select Network Interface Card */ |
| #define SELECT_PRN 0x1c /* select Printer */ |
| #define NML_PRN 0xec /* normal Printer situation */ |
| #define IRQEN 0x10 /* enable IRQ line */ |
| |
| /* |
| * D-Link STATUS_PORT |
| */ |
| #define RX_BUSY 0x80 |
| #define RX_GOOD 0x40 |
| #define TX_FAILED16 0x10 |
| #define TX_BUSY 0x08 |
| |
| /* |
| * D-Link DATA_PORT commands |
| * command in low 4 bits |
| * data in high 4 bits |
| * select current data nibble with HI_NIBBLE bit |
| */ |
| #define WRITE_DATA 0x00 /* write memory */ |
| #define READ_DATA 0x01 /* read memory */ |
| #define STATUS 0x02 /* read status register */ |
| #define COMMAND 0x03 /* write command register (see COMMAND below) */ |
| #define NULL_COMMAND 0x04 /* null command */ |
| #define RX_LEN 0x05 /* read received packet length */ |
| #define TX_ADDR 0x06 /* set adapter transmit memory address */ |
| #define RW_ADDR 0x07 /* set adapter read/write memory address */ |
| #define HI_NIBBLE 0x08 /* read/write the high nibble of data, |
| or-ed with rest of command */ |
| |
| /* |
| * command register, accessed through DATA_PORT with low bits = COMMAND |
| */ |
| #define RX_ALL 0x01 /* PROMISCUOUS */ |
| #define RX_BP 0x02 /* default: BROADCAST & PHYSICAL ADDRESS */ |
| #define RX_MBP 0x03 /* MULTICAST, BROADCAST & PHYSICAL ADDRESS */ |
| |
| #define TX_ENABLE 0x04 /* bit 2 */ |
| #define RX_ENABLE 0x08 /* bit 3 */ |
| |
| #define RESET 0x80 /* set bit 7 high */ |
| #define STOP_RESET 0x00 /* set bit 7 low */ |
| |
| /* |
| * data to command register |
| * (high 4 bits in write to DATA_PORT) |
| */ |
| #define RX_PAGE2_SELECT 0x10 /* bit 4, only 2 pages to select */ |
| #define RX_BASE_PAGE 0x20 /* bit 5, always set when specifying RX_ADDR */ |
| #define FLIP_IRQ 0x40 /* bit 6 */ |
| |
| /* |
| * D-Link adapter internal memory: |
| * |
| * 0-2K 1:st transmit page (send from pointer up to 2K) |
| * 2-4K 2:nd transmit page (send from pointer up to 4K) |
| * |
| * 4-6K 1:st receive page (data from 4K upwards) |
| * 6-8K 2:nd receive page (data from 6K upwards) |
| * |
| * 8K+ Adapter ROM (contains magic code and last 3 bytes of Ethernet address) |
| */ |
| #define MEM_2K 0x0800 /* 2048 */ |
| #define MEM_4K 0x1000 /* 4096 */ |
| #define MEM_6K 0x1800 /* 6144 */ |
| #define NODE_ADDRESS 0x2000 /* 8192 */ |
| |
| #define RUNT 60 /* Too small Ethernet packet */ |
| |
| /************************************************** |
| * * |
| * End of definition * |
| * * |
| **************************************************/ |
| |
| /* |
| * Index to functions, as function prototypes. |
| */ |
| /* Routines used internally. (See "convenience macros") */ |
| static u8 de600_read_status(struct net_device *dev); |
| static u8 de600_read_byte(unsigned char type, struct net_device *dev); |
| |
| /* Put in the device structure. */ |
| static int de600_open(struct net_device *dev); |
| static int de600_close(struct net_device *dev); |
| static int de600_start_xmit(struct sk_buff *skb, struct net_device *dev); |
| |
| /* Dispatch from interrupts. */ |
| static irqreturn_t de600_interrupt(int irq, void *dev_id); |
| static int de600_tx_intr(struct net_device *dev, int irq_status); |
| static void de600_rx_intr(struct net_device *dev); |
| |
| /* Initialization */ |
| static void trigger_interrupt(struct net_device *dev); |
| static int adapter_init(struct net_device *dev); |
| |
| /* |
| * Convenience macros/functions for D-Link adapter |
| */ |
| |
| #define select_prn() outb_p(SELECT_PRN, COMMAND_PORT); DE600_SLOW_DOWN |
| #define select_nic() outb_p(SELECT_NIC, COMMAND_PORT); DE600_SLOW_DOWN |
| |
| /* Thanks for hints from Mark Burton <markb@ordern.demon.co.uk> */ |
| #define de600_put_byte(data) ( \ |
| outb_p(((data) << 4) | WRITE_DATA , DATA_PORT), \ |
| outb_p(((data) & 0xf0) | WRITE_DATA | HI_NIBBLE, DATA_PORT)) |
| |
| /* |
| * The first two outb_p()'s below could perhaps be deleted if there |
| * would be more delay in the last two. Not certain about it yet... |
| */ |
| #define de600_put_command(cmd) ( \ |
| outb_p(( rx_page << 4) | COMMAND , DATA_PORT), \ |
| outb_p(( rx_page & 0xf0) | COMMAND | HI_NIBBLE, DATA_PORT), \ |
| outb_p(((rx_page | cmd) << 4) | COMMAND , DATA_PORT), \ |
| outb_p(((rx_page | cmd) & 0xf0) | COMMAND | HI_NIBBLE, DATA_PORT)) |
| |
| #define de600_setup_address(addr,type) ( \ |
| outb_p((((addr) << 4) & 0xf0) | type , DATA_PORT), \ |
| outb_p(( (addr) & 0xf0) | type | HI_NIBBLE, DATA_PORT), \ |
| outb_p((((addr) >> 4) & 0xf0) | type , DATA_PORT), \ |
| outb_p((((addr) >> 8) & 0xf0) | type | HI_NIBBLE, DATA_PORT)) |
| |
| #define rx_page_adr() ((rx_page & RX_PAGE2_SELECT)?(MEM_6K):(MEM_4K)) |
| |
| /* Flip bit, only 2 pages */ |
| #define next_rx_page() (rx_page ^= RX_PAGE2_SELECT) |
| |
| #define tx_page_adr(a) (((a) + 1) * MEM_2K) |
