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1da177e4 LT |
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") */ | |
118 | static u8 de600_read_status(struct net_device *dev); | |
119 | static u8 de600_read_byte(unsigned char type, struct net_device *dev); | |
120 | ||
121 | /* Put in the device structure. */ | |
122 | static int de600_open(struct net_device *dev); | |
123 | static int de600_close(struct net_device *dev); | |
1da177e4 LT |
124 | static int de600_start_xmit(struct sk_buff *skb, struct net_device *dev); |
125 | ||
126 | /* Dispatch from interrupts. */ | |
7d12e780 | 127 | static irqreturn_t de600_interrupt(int irq, void *dev_id); |
1da177e4 LT |
128 | static int de600_tx_intr(struct net_device *dev, int irq_status); |
129 | static void de600_rx_intr(struct net_device *dev); | |
130 | ||
131 | /* Initialization */ | |
132 | static void trigger_interrupt(struct net_device *dev); | |
133 | static 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) |