File: /usr/src/linux/drivers/net/eexpress.h
1 /*
2 * eexpress.h: Intel EtherExpress16 defines
3 */
4
5 /*
6 * EtherExpress card register addresses
7 * as offsets from the base IO region (dev->base_addr)
8 */
9
10 #define DATAPORT 0x0000
11 #define WRITE_PTR 0x0002
12 #define READ_PTR 0x0004
13 #define SIGNAL_CA 0x0006
14 #define SET_IRQ 0x0007
15 #define SM_PTR 0x0008
16 #define MEM_Dec 0x000a
17 #define MEM_Ctrl 0x000b
18 #define MEM_Page_Ctrl 0x000c
19 #define Config 0x000d
20 #define EEPROM_Ctrl 0x000e
21 #define ID_PORT 0x000f
22 #define MEM_ECtrl 0x000f
23
24 /*
25 * card register defines
26 */
27
28 /* SET_IRQ */
29 #define SIRQ_en 0x08
30 #define SIRQ_dis 0x00
31
32 /* EEPROM_Ctrl */
33 #define EC_Clk 0x01
34 #define EC_CS 0x02
35 #define EC_Wr 0x04
36 #define EC_Rd 0x08
37 #define ASIC_RST 0x40
38 #define i586_RST 0x80
39
40 #define eeprom_delay() { udelay(40); }
41
42 /*
43 * i82586 Memory Configuration
44 */
45
46 /* (System Configuration Pointer) System start up block, read after 586_RST */
47 #define SCP_START 0xfff6
48
49 /* Intermediate System Configuration Pointer */
50 #define ISCP_START 0x0000
51
52 /* System Command Block */
53 #define SCB_START 0x0008
54
55 /* Start of buffer region. Everything before this is used for control
56 * structures and the CU configuration program. The memory layout is
57 * determined in eexp_hw_probe(), once we know how much memory is
58 * available on the card.
59 */
60
61 #define TX_BUF_START 0x0100
62
63 #define TX_BUF_SIZE ((24+ETH_FRAME_LEN+31)&~0x1f)
64 #define RX_BUF_SIZE ((32+ETH_FRAME_LEN+31)&~0x1f)
65
66 /*
67 * SCB defines
68 */
69
70 /* these functions take the SCB status word and test the relevant status bit */
71 #define SCB_complete(s) ((s&0x8000)!=0)
72 #define SCB_rxdframe(s) ((s&0x4000)!=0)
73 #define SCB_CUdead(s) ((s&0x2000)!=0)
74 #define SCB_RUdead(s) ((s&0x1000)!=0)
75 #define SCB_ack(s) (s & 0xf000)
76
77 /* Command unit status: 0=idle, 1=suspended, 2=active */
78 #define SCB_CUstat(s) ((s&0x0300)>>8)
79
80 /* Receive unit status: 0=idle, 1=suspended, 2=out of resources, 4=ready */
81 #define SCB_RUstat(s) ((s&0x0070)>>4)
82
83 /* SCB commands */
84 #define SCB_CUnop 0x0000
85 #define SCB_CUstart 0x0100
86 #define SCB_CUresume 0x0200
87 #define SCB_CUsuspend 0x0300
88 #define SCB_CUabort 0x0400
89 #define SCB_resetchip 0x0080
90
91 #define SCB_RUnop 0x0000
92 #define SCB_RUstart 0x0010
93 #define SCB_RUresume 0x0020
94 #define SCB_RUsuspend 0x0030
95 #define SCB_RUabort 0x0040
96
97 /*
98 * Command block defines
99 */
100
101 #define Stat_Done(s) ((s&0x8000)!=0)
102 #define Stat_Busy(s) ((s&0x4000)!=0)
103 #define Stat_OK(s) ((s&0x2000)!=0)
104 #define Stat_Abort(s) ((s&0x1000)!=0)
105 #define Stat_STFail ((s&0x0800)!=0)
106 #define Stat_TNoCar(s) ((s&0x0400)!=0)
107 #define Stat_TNoCTS(s) ((s&0x0200)!=0)
108 #define Stat_TNoDMA(s) ((s&0x0100)!=0)
109 #define Stat_TDefer(s) ((s&0x0080)!=0)
110 #define Stat_TColl(s) ((s&0x0040)!=0)
111 #define Stat_TXColl(s) ((s&0x0020)!=0)
112 #define Stat_NoColl(s) (s&0x000f)
113
114 /* Cmd_END will end AFTER the command if this is the first
115 * command block after an SCB_CUstart, but BEFORE the command
116 * for all subsequent commands. Best strategy is to place
117 * Cmd_INT on the last command in the sequence, followed by a
118 * dummy Cmd_Nop with Cmd_END after this.
119 */
120
121 #define Cmd_END 0x8000
122 #define Cmd_SUS 0x4000
123 #define Cmd_INT 0x2000
124
125 #define Cmd_Nop 0x0000
126 #define Cmd_SetAddr 0x0001
127 #define Cmd_Config 0x0002
128 #define Cmd_MCast 0x0003
129 #define Cmd_Xmit 0x0004
130 #define Cmd_TDR 0x0005
131 #define Cmd_Dump 0x0006
132 #define Cmd_Diag 0x0007
133
134
135 /*
136 * Frame Descriptor (Receive block) defines
137 */
138
139 #define FD_Done(s) ((s&0x8000)!=0)
140 #define FD_Busy(s) ((s&0x4000)!=0)
141 #define FD_OK(s) ((s&0x2000)!=0)
142
143 #define FD_CRC(s) ((s&0x0800)!=0)
144 #define FD_Align(s) ((s&0x0400)!=0)
145 #define FD_Resrc(s) ((s&0x0200)!=0)
146 #define FD_DMA(s) ((s&0x0100)!=0)
147 #define FD_Short(s) ((s&0x0080)!=0)
148 #define FD_NoEOF(s) ((s&0x0040)!=0)
149
150 struct rfd_header {
151 volatile unsigned long flags;
152 volatile unsigned short link;
153 volatile unsigned short rbd_offset;
154 volatile unsigned short dstaddr1;
155 volatile unsigned short dstaddr2;
156 volatile unsigned short dstaddr3;
157 volatile unsigned short srcaddr1;
158 volatile unsigned short srcaddr2;
159 volatile unsigned short srcaddr3;
160 volatile unsigned short length;
161
162 /* This is actually a Receive Buffer Descriptor. The way we
163 * arrange memory means that an RBD always follows the RFD that
164 * points to it, so they might as well be in the same structure.
165 */
166 volatile unsigned short actual_count;
167 volatile unsigned short next_rbd;
168 volatile unsigned short buf_addr1;
169 volatile unsigned short buf_addr2;
170 volatile unsigned short size;
171 };
172
173 /* Returned data from the Time Domain Reflectometer */
174
175 #define TDR_LINKOK (1<<15)
176 #define TDR_XCVRPROBLEM (1<<14)
177 #define TDR_OPEN (1<<13)
178 #define TDR_SHORT (1<<12)
179 #define TDR_TIME 0x7ff
180