FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/z8530sc.h
1 /* $NetBSD: z8530sc.h,v 1.22 2005/12/11 12:21:29 christos Exp $ */
2
3 /*
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This software was developed by the Computer Systems Engineering group
8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
9 * contributed to Berkeley.
10 *
11 * All advertising materials mentioning features or use of this software
12 * must display the following acknowledgement:
13 * This product includes software developed by the University of
14 * California, Lawrence Berkeley Laboratory.
15 *
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
18 * are met:
19 * 1. Redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution.
24 * 3. Neither the name of the University nor the names of its contributors
25 * may be used to endorse or promote products derived from this software
26 * without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * SUCH DAMAGE.
39 *
40 * @(#)zsvar.h 8.1 (Berkeley) 6/11/93
41 */
42
43 /*
44 * Copyright (c) 1994 Gordon W. Ross
45 *
46 * This software was developed by the Computer Systems Engineering group
47 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
48 * contributed to Berkeley.
49 *
50 * All advertising materials mentioning features or use of this software
51 * must display the following acknowledgement:
52 * This product includes software developed by the University of
53 * California, Lawrence Berkeley Laboratory.
54 *
55 * Redistribution and use in source and binary forms, with or without
56 * modification, are permitted provided that the following conditions
57 * are met:
58 * 1. Redistributions of source code must retain the above copyright
59 * notice, this list of conditions and the following disclaimer.
60 * 2. Redistributions in binary form must reproduce the above copyright
61 * notice, this list of conditions and the following disclaimer in the
62 * documentation and/or other materials provided with the distribution.
63 * 3. All advertising materials mentioning features or use of this software
64 * must display the following acknowledgement:
65 * This product includes software developed by the University of
66 * California, Berkeley and its contributors.
67 * 4. Neither the name of the University nor the names of its contributors
68 * may be used to endorse or promote products derived from this software
69 * without specific prior written permission.
70 *
71 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
72 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
73 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
74 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
75 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
76 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
77 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
78 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
79 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
80 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
81 * SUCH DAMAGE.
82 *
83 * @(#)zsvar.h 8.1 (Berkeley) 6/11/93
84 */
85
86 #ifdef _KERNEL_OPT
87 #include "locators.h"
88 #endif
89
90 /*
91 * Function vector - per channel
92 */
93 struct zs_chanstate;
94 struct zsops {
95 void (*zsop_rxint)(struct zs_chanstate *);
96 /* receive char available */
97 void (*zsop_stint)(struct zs_chanstate *, int);
98 /* external/status */
99 void (*zsop_txint)(struct zs_chanstate *);
100 /* xmit buffer empty */
101 void (*zsop_softint)(struct zs_chanstate *);
102 /* process software interrupt */
103 };
104
105 extern struct zsops zsops_null;
106
107
108 /*
109 * Software state, per zs channel.
110 */
111 struct zs_chanstate {
112
113 /* Pointers to the device registers. */
114 volatile u_char *cs_reg_csr; /* ctrl, status, and reg. number. */
115 volatile u_char *cs_reg_data; /* data or numbered register */
116
117 int cs_channel; /* sub-unit number */
118 void *cs_private; /* sub-driver data pointer */
119 struct zsops *cs_ops;
120
121 struct simplelock cs_lock; /* per channel lock */
122
123 int cs_brg_clk; /* BAUD Rate Generator clock
124 * (usually PCLK / 16) */
125 int cs_defspeed; /* default baud rate */
126 int cs_defcflag; /* default cflag */
127
128 /*
129 * We must keep a copy of the write registers as they are
130 * mostly write-only and we sometimes need to set and clear
131 * individual bits (e.g., in WR3). Not all of these are
132 * needed but 16 bytes is cheap and this makes the addressing
133 * simpler. Unfortunately, we can only write to some registers
134 * when the chip is not actually transmitting, so whenever
135 * we are expecting a `transmit done' interrupt the preg array
136 * is allowed to `get ahead' of the current values. In a
137 * few places we must change the current value of a register,
138 * rather than (or in addition to) the pending value; for these
139 * cs_creg[] contains the current value.
140 */
141 u_char cs_creg[16]; /* current values */
142 u_char cs_preg[16]; /* pending values */
143 int cs_heldchange; /* change pending (creg != preg) */
144
145 u_char cs_rr0; /* last rr0 processed */
146 u_char cs_rr0_delta; /* rr0 changes at status intr. */
147 u_char cs_rr0_mask; /* rr0 bits that stop output */
148 u_char cs_rr0_dcd; /* which bit to read as DCD */
149 u_char cs_rr0_cts; /* which bit to read as CTS */
150 u_char cs_rr0_pps; /* which bit to use for PPS */
151 /* the above is set only while CRTSCTS is enabled. */
152
153 u_char cs_wr5_dtr; /* which bit to write as DTR */
154 u_char cs_wr5_rts; /* which bit to write as RTS */
155 /* the above is set only while CRTSCTS is enabled. */
156
157 char cs_softreq; /* need soft interrupt call */
158 char cs_spare1; /* (for skippy :) */
159
160 /*
161 * For strange systems that have oddly wired serial ports, we
162 * provide a pointer to the channel state of the port that has
163 * our status lines on it.
164 */
165 struct zs_chanstate *cs_ctl_chan;
166
167 /* power management hooks */
168 int (*enable)(struct zs_chanstate *);
169 void (*disable)(struct zs_chanstate *);
170 int enabled;
171
172 /* MD code might define a larger variant of this. */
173 };
174
175 struct consdev;
176 struct zsc_attach_args {
177 int channel; /* two serial channels per zsc */
178 int hwflags; /* see definitions below */
179 /* `consdev' is only valid if ZS_HWFLAG_USE_CONSDEV is set */
180 struct consdev *consdev;
181 };
182
183 #define zsccf_channel cf_loc[ZSCCF_CHANNEL]
184
185 /* In case of split console devices, use these: */
186 #define ZS_HWFLAG_CONSOLE_INPUT 1
187 #define ZS_HWFLAG_CONSOLE_OUTPUT 2
188 #define ZS_HWFLAG_CONSOLE \
189 (ZS_HWFLAG_CONSOLE_INPUT | ZS_HWFLAG_CONSOLE_OUTPUT)
190 #define ZS_HWFLAG_NO_DCD 4 /* Ignore the DCD bit */
191 #define ZS_HWFLAG_NO_CTS 8 /* Ignore the CTS bit */
192 #define ZS_HWFLAG_RAW 16 /* advise raw mode */
193 #define ZS_HWFLAG_USE_CONSDEV 32 /* Use console ops from `consdev' */
194 #define ZS_HWFLAG_NORESET 64 /* Don't reset at attach time */
195
196 int zsc_intr_soft(void *);
197 int zsc_intr_hard(void *);
198
199 void zs_abort(struct zs_chanstate *);
200 void zs_break(struct zs_chanstate *, int);
201 void zs_iflush(struct zs_chanstate *);
202 void zs_loadchannelregs(struct zs_chanstate *);
203 int zs_set_speed(struct zs_chanstate *, int);
204 int zs_set_modes(struct zs_chanstate *, int);
205
206 int zs_check_kgdb(struct zs_chanstate *, int);
207
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