1 /*
2 ** -----------------------------------------------------------------------------
3 **
4 ** Perle Specialix driver for Linux
5 ** Ported from existing RIO Driver for SCO sources.
6 *
7 * (C) 1990 - 1998 Specialix International Ltd., Byfleet, Surrey, UK.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 **
23 ** Module : rio.h
24 ** SID : 1.3
25 ** Last Modified : 11/6/98 11:34:13
26 ** Retrieved : 11/6/98 11:34:22
27 **
28 ** ident @(#)rio.h 1.3
29 **
30 ** -----------------------------------------------------------------------------
31 */
32
33 #ifndef __rio_rio_h__
34 #define __rio_rio_h__
35
36 /*
37 ** Maximum numbers of things
38 */
39 #define RIO_SLOTS 4 /* number of configuration slots */
40 #define RIO_HOSTS 4 /* number of hosts that can be found */
41 #define PORTS_PER_HOST 128 /* number of ports per host */
42 #define LINKS_PER_UNIT 4 /* number of links from a host */
43 #define RIO_PORTS (PORTS_PER_HOST * RIO_HOSTS) /* max. no. of ports */
44 #define RTAS_PER_HOST (MAX_RUP) /* number of RTAs per host */
45 #define PORTS_PER_RTA (PORTS_PER_HOST/RTAS_PER_HOST) /* ports on a rta */
46 #define PORTS_PER_MODULE 4 /* number of ports on a plug-in module */
47 /* number of modules on an RTA */
48 #define MODULES_PER_RTA (PORTS_PER_RTA/PORTS_PER_MODULE)
49 #define MAX_PRODUCT 16 /* numbr of different product codes */
50 #define MAX_MODULE_TYPES 16 /* number of different types of module */
51
52 #define RIO_CONTROL_DEV 128 /* minor number of host/control device */
53 #define RIO_INVALID_MAJOR 0 /* test first host card's major no for validity */
54
55 /*
56 ** number of RTAs that can be bound to a master
57 */
58 #define MAX_RTA_BINDINGS (MAX_RUP * RIO_HOSTS)
59
60 /*
61 ** Unit types
62 */
63 #define PC_RTA16 0x90000000
64 #define PC_RTA8 0xe0000000
65 #define TYPE_HOST 0
66 #define TYPE_RTA8 1
67 #define TYPE_RTA16 2
68
69 /*
70 ** Flag values returned by functions
71 */
72
73 #define RIO_FAIL -1
74
75 /*
76 ** SysPort value for something that hasn't any ports
77 */
78 #define NO_PORT 0xFFFFFFFF
79
80 /*
81 ** Unit ID Of all hosts
82 */
83 #define HOST_ID 0
84
85 /*
86 ** Break bytes into nybles
87 */
88 #define LONYBLE(X) ((X) & 0xF)
89 #define HINYBLE(X) (((X)>>4) & 0xF)
90
91 /*
92 ** Flag values passed into some functions
93 */
94 #define DONT_SLEEP 0
95 #define OK_TO_SLEEP 1
96
97 #define DONT_PRINT 1
98 #define DO_PRINT 0
99
100 #define PRINT_TO_LOG_CONS 0
101 #define PRINT_TO_CONS 1
102 #define PRINT_TO_LOG 2
103
104 /*
105 ** Timeout has trouble with times of less than 3 ticks...
106 */
107 #define MIN_TIMEOUT 3
108
109 /*
110 ** Generally useful constants
111 */
112
113 #define HUNDRED_MS ((HZ/10)?(HZ/10):1)
114 #define ONE_MEG 0x100000
115 #define SIXTY_FOUR_K 0x10000
116
117 #define RIO_AT_MEM_SIZE SIXTY_FOUR_K
118 #define RIO_EISA_MEM_SIZE SIXTY_FOUR_K
119 #define RIO_MCA_MEM_SIZE SIXTY_FOUR_K
120
121 #define COOK_WELL 0
122 #define COOK_MEDIUM 1
123 #define COOK_RAW 2
124
125 /*
126 ** Pointer manipulation stuff
127 ** RIO_PTR takes hostp->Caddr and the offset into the DP RAM area
128 ** and produces a UNIX caddr_t (pointer) to the object
129 ** RIO_OBJ takes hostp->Caddr and a UNIX pointer to an object and
130 ** returns the offset into the DP RAM area.
131 */
132 #define RIO_PTR(C,O) (((unsigned char __iomem *)(C))+(0xFFFF&(O)))
133 #define RIO_OFF(C,O) ((unsigned char __iomem *)(O)-(unsigned char __iomem *)(C))
134
135 /*
136 ** How to convert from various different device number formats:
137 ** DEV is a dev number, as passed to open, close etc - NOT a minor
138 ** number!
139 **/
140
141 #define RIO_MODEM_MASK 0x1FF
142 #define RIO_MODEM_BIT 0x200
143 #define RIO_UNMODEM(DEV) (MINOR(DEV) & RIO_MODEM_MASK)
144 #define RIO_ISMODEM(DEV) (MINOR(DEV) & RIO_MODEM_BIT)
145 #define RIO_PORT(DEV,FIRST_MAJ) ( (MAJOR(DEV) - FIRST_MAJ) * PORTS_PER_HOST) \
146 + MINOR(DEV)
147 #define CSUM(pkt_ptr) (((u16 *)(pkt_ptr))[0] + ((u16 *)(pkt_ptr))[1] + \
148 ((u16 *)(pkt_ptr))[2] + ((u16 *)(pkt_ptr))[3] + \
149 ((u16 *)(pkt_ptr))[4] + ((u16 *)(pkt_ptr))[5] + \
150 ((u16 *)(pkt_ptr))[6] + ((u16 *)(pkt_ptr))[7] + \
151 ((u16 *)(pkt_ptr))[8] + ((u16 *)(pkt_ptr))[9] )
152
153 #define RIO_LINK_ENABLE 0x80FF /* FF is a hack, mainly for Mips, to */
154 /* prevent a really stupid race condition. */
155
156 #define NOT_INITIALISED 0
157 #define INITIALISED 1
158
159 #define NOT_POLLING 0
160 #define POLLING 1
161
162 #define NOT_CHANGED 0
163 #define CHANGED 1
164
165 #define NOT_INUSE 0
166
167 #define DISCONNECT 0
168 #define CONNECT 1
169
170 /* ------ Control Codes ------ */
171
172 #define CONTROL '^'
173 #define IFOAD ( CONTROL + 1 )
174 #define IDENTIFY ( CONTROL + 2 )
175 #define ZOMBIE ( CONTROL + 3 )
176 #define UFOAD ( CONTROL + 4 )
177 #define IWAIT ( CONTROL + 5 )
178
179 #define IFOAD_MAGIC 0xF0AD /* of course */
180 #define ZOMBIE_MAGIC (~0xDEAD) /* not dead -> zombie */
181 #define UFOAD_MAGIC 0xD1E /* kill-your-neighbour */
182 #define IWAIT_MAGIC 0xB1DE /* Bide your time */
183
184 /* ------ Error Codes ------ */
185
186 #define E_NO_ERROR ((ushort) 0)
187
188 /* ------ Free Lists ------ */
189
190 struct rio_free_list {
191 u16 next;
192 u16 prev;
193 };
194
195 /* NULL for card side linked lists */
196 #define TPNULL ((ushort)(0x8000))
197 /* We can add another packet to a transmit queue if the packet pointer pointed
198 * to by the TxAdd pointer has PKT_IN_USE clear in its address. */
199 #define PKT_IN_USE 0x1
200
201 /* ------ Topology ------ */
202
203 struct Top {
204 u8 Unit;
205 u8 Link;
206 };
207
208 #endif /* __rio_h__ */
209
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