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wanxl.h
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1 /*
2  * wanXL serial card driver for Linux
3  * definitions common to host driver and card firmware
4  *
5  * Copyright (C) 2003 Krzysztof Halasa <[email protected]>
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of version 2 of the GNU General Public License
9  * as published by the Free Software Foundation.
10  */
11 
12 #define RESET_WHILE_LOADING 0
13 
14 /* you must rebuild the firmware if any of the following is changed */
15 #define DETECT_RAM 0 /* needed for > 4MB RAM, 16 MB maximum */
16 #define QUICC_MEMCPY_USES_PLX 1 /* must be used if the host has > 256 MB RAM */
17 
18 
19 #define STATUS_CABLE_V35 2
20 #define STATUS_CABLE_X21 3
21 #define STATUS_CABLE_V24 4
22 #define STATUS_CABLE_EIA530 5
23 #define STATUS_CABLE_INVALID 6
24 #define STATUS_CABLE_NONE 7
25 
26 #define STATUS_CABLE_DCE 0x8000
27 #define STATUS_CABLE_DSR 0x0010
28 #define STATUS_CABLE_DCD 0x0008
29 #define STATUS_CABLE_PM_SHIFT 5
30 
31 #define PDM_OFFSET 0x1000
32 
33 #define TX_BUFFERS 10 /* per port */
34 #define RX_BUFFERS 30
35 #define RX_QUEUE_LENGTH 40 /* card->host queue length - per card */
36 
37 #define PACKET_EMPTY 0x00
38 #define PACKET_FULL 0x10
39 #define PACKET_SENT 0x20 /* TX only */
40 #define PACKET_UNDERRUN 0x30 /* TX only */
41 #define PACKET_PORT_MASK 0x03 /* RX only */
42 
43 /* bit numbers in PLX9060 doorbell registers */
44 #define DOORBELL_FROM_CARD_TX_0 0 /* packet sent by the card */
45 #define DOORBELL_FROM_CARD_TX_1 1
46 #define DOORBELL_FROM_CARD_TX_2 2
47 #define DOORBELL_FROM_CARD_TX_3 3
48 #define DOORBELL_FROM_CARD_RX 4
49 #define DOORBELL_FROM_CARD_CABLE_0 5 /* cable/PM/etc. changed */
50 #define DOORBELL_FROM_CARD_CABLE_1 6
51 #define DOORBELL_FROM_CARD_CABLE_2 7
52 #define DOORBELL_FROM_CARD_CABLE_3 8
53 
54 #define DOORBELL_TO_CARD_OPEN_0 0
55 #define DOORBELL_TO_CARD_OPEN_1 1
56 #define DOORBELL_TO_CARD_OPEN_2 2
57 #define DOORBELL_TO_CARD_OPEN_3 3
58 #define DOORBELL_TO_CARD_CLOSE_0 4
59 #define DOORBELL_TO_CARD_CLOSE_1 5
60 #define DOORBELL_TO_CARD_CLOSE_2 6
61 #define DOORBELL_TO_CARD_CLOSE_3 7
62 #define DOORBELL_TO_CARD_TX_0 8 /* outbound packet queued */
63 #define DOORBELL_TO_CARD_TX_1 9
64 #define DOORBELL_TO_CARD_TX_2 10
65 #define DOORBELL_TO_CARD_TX_3 11
66 
67 /* firmware-only status bits, starting from last DOORBELL_TO_CARD + 1 */
68 #define TASK_SCC_0 12
69 #define TASK_SCC_1 13
70 #define TASK_SCC_2 14
71 #define TASK_SCC_3 15
72 
73 #define ALIGN32(x) (((x) + 3) & 0xFFFFFFFC)
74 #define BUFFER_LENGTH ALIGN32(HDLC_MAX_MRU + 4) /* 4 bytes for 32-bit CRC */
75 
76 /* Address of TX and RX buffers in 68360 address space */
77 #define BUFFERS_ADDR 0x4000 /* 16 KB */
78 
79 #ifndef __ASSEMBLER__
80 #define PLX_OFFSET 0
81 #else
82 #define PLX_OFFSET PLX + 0x80
83 #endif
84 
85 #define PLX_MAILBOX_0 (PLX_OFFSET + 0x40)
86 #define PLX_MAILBOX_1 (PLX_OFFSET + 0x44)
87 #define PLX_MAILBOX_2 (PLX_OFFSET + 0x48)
88 #define PLX_MAILBOX_3 (PLX_OFFSET + 0x4C)
89 #define PLX_MAILBOX_4 (PLX_OFFSET + 0x50)
90 #define PLX_MAILBOX_5 (PLX_OFFSET + 0x54)
91 #define PLX_MAILBOX_6 (PLX_OFFSET + 0x58)
92 #define PLX_MAILBOX_7 (PLX_OFFSET + 0x5C)
93 #define PLX_DOORBELL_TO_CARD (PLX_OFFSET + 0x60)
94 #define PLX_DOORBELL_FROM_CARD (PLX_OFFSET + 0x64)
95 #define PLX_INTERRUPT_CS (PLX_OFFSET + 0x68)
96 #define PLX_CONTROL (PLX_OFFSET + 0x6C)
97 
98 #ifdef __ASSEMBLER__
99 #define PLX_DMA_0_MODE (PLX + 0x100)
100 #define PLX_DMA_0_PCI (PLX + 0x104)
101 #define PLX_DMA_0_LOCAL (PLX + 0x108)
102 #define PLX_DMA_0_LENGTH (PLX + 0x10C)
103 #define PLX_DMA_0_DESC (PLX + 0x110)
104 #define PLX_DMA_1_MODE (PLX + 0x114)
105 #define PLX_DMA_1_PCI (PLX + 0x118)
106 #define PLX_DMA_1_LOCAL (PLX + 0x11C)
107 #define PLX_DMA_1_LENGTH (PLX + 0x120)
108 #define PLX_DMA_1_DESC (PLX + 0x124)
109 #define PLX_DMA_CMD_STS (PLX + 0x128)
110 #define PLX_DMA_ARBITR_0 (PLX + 0x12C)
111 #define PLX_DMA_ARBITR_1 (PLX + 0x130)
112 #endif
113 
114 #define DESC_LENGTH 12
115 
116 /* offsets from start of status_t */
117 /* card to host */
118 #define STATUS_OPEN 0
119 #define STATUS_CABLE (STATUS_OPEN + 4)
120 #define STATUS_RX_OVERRUNS (STATUS_CABLE + 4)
121 #define STATUS_RX_FRAME_ERRORS (STATUS_RX_OVERRUNS + 4)
122 
123 /* host to card */
124 #define STATUS_PARITY (STATUS_RX_FRAME_ERRORS + 4)
125 #define STATUS_ENCODING (STATUS_PARITY + 4)
126 #define STATUS_CLOCKING (STATUS_ENCODING + 4)
127 #define STATUS_TX_DESCS (STATUS_CLOCKING + 4)
128 
129 #ifndef __ASSEMBLER__
130 
131 typedef struct {
132  volatile u32 stat;
133  u32 address; /* PCI address */
134  volatile u32 length;
135 }desc_t;
136 
137 
138 typedef struct {
139 // Card to host
140  volatile u32 open;
141  volatile u32 cable;
142  volatile u32 rx_overruns;
144 
145 // Host to card
149  desc_t tx_descs[TX_BUFFERS];
151 
152 #endif /* __ASSEMBLER__ */