FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/cd18xxvar.h
1 /* $NetBSD: cd18xxvar.h,v 1.1 2001/10/03 04:25:30 mrg Exp $ */
2
3 /*
4 * Copyright (c) 1998, 2001 Matthew R. Green
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 /*
32 * cd18xxvar.h: header file for cirrus-logic CL-CD180/CD1864/CD1865 8
33 * port serial chip.
34 */
35
36 #include <sys/tty.h>
37
38 /* allocated per-serial port */
39 struct cdtty_port {
40 struct tty *p_tty;
41
42 int p_swflags; /* TIOCFLAG_SOFTCAR, etc. */
43 int p_defspeed; /* default speed */
44 int p_defcflag; /* default termios cflag */
45
46 u_int p_r_hiwat; /* high water mark */
47 u_int p_r_lowat; /* low water mark */
48 u_char *volatile p_rbget; /* ring buffer get ptr */
49 u_char *volatile p_rbput; /* ring buffer put ptr */
50 volatile u_int p_rbavail; /* size available */
51 u_char *p_rbuf; /* ring buffer */
52 u_char *p_ebuf; /* end of ring buffer */
53
54 u_char * p_tba; /* transmit buffer address */
55 u_int p_tbc, /* transmit byte count */
56 p_heldtbc; /* held tbc; waiting for tx */
57 #define CDTTY_RING_SIZE 2048
58
59 u_int p_parityerr, /* number of parity errors */
60 p_frameerr, /* number of framing errors */
61 p_overflows, /* number of overruns */
62 p_floods; /* number of rbuf floods */
63
64 volatile u_char p_break, /* current break status */
65 p_needbreak, /* need to generate a break */
66 p_rx_flags, /* software state */
67 #define RX_TTY_BLOCKED 0x01
68 #define RX_TTY_OVERFLOWED 0x02
69 #define RX_IBUF_BLOCKED 0x04
70 #define RX_IBUF_OVERFLOWED 0x08
71 #define RX_ANY_BLOCK 0x0f
72 p_rx_ready, /* soft rx interrupt ready */
73 p_rx_busy,
74 p_tx_done, /* soft tx interrupt ready */
75 p_tx_busy,
76 p_tx_stopped,
77 p_st_check, /* soft modem interrupt ready */
78 p_heldchange; /* waiting to update regs */
79
80 /*
81 * cd18xx channel registers we keep a copy of, for writing in
82 * loadchannelregs().
83 */
84 u_char p_srer, /* service request enable */
85 p_msvr, /* modem signal value */
86 p_msvr_cts, p_msvr_rts, p_msvr_dcd,
87 p_msvr_mask, p_msvr_active, p_msvr_delta,
88 p_cor1, /* channel option reg 1 */
89 p_cor2, /* channel option reg 2 */
90 p_cor3, /* channel option reg 3 */
91 p_mcor1, /* modem option reg 1 */
92 p_mcor1_dtr,
93 p_rbprh, /* recv bps high */
94 p_rbprl, /* recv bps low */
95 p_tbprh, /* xmit bps high */
96 p_tbprl, /* xmit bps low */
97 p_chanctl; /* chanctl command */
98 };
99
100 /* softc allocated per-cd18xx */
101 struct cd18xx_softc {
102 struct device sc_dev;
103
104 /* tag and handle for our registers (128 bytes) */
105 bus_space_tag_t sc_tag;
106 bus_space_handle_t sc_handle;
107
108 /*
109 * cd18xx has weird interrupt acknowledgement and configuration,
110 * so we have to defer this to our parent. this function must
111 * do whatever is required to genereate *iack signals that are
112 * required for the cd180. this probably also depends on the
113 * values of the sc_rsmr, sc_tsmr and sc_msmr variables. the
114 * function is called with the provided argument, and with any
115 * of the 4 #defines below, depending on the ack needing to be
116 * generated.
117 */
118 u_char (*sc_ackfunc)(void *, int);
119 #define CD18xx_INTRACK_MxINT 0x01 /* modem interrupt */
120 #define CD18xx_INTRACK_TxINT 0x02 /* tx interrupt */
121 #define CD18xx_INTRACK_RxINT 0x04 /* rx (good data) interrupt */
122 #define CD18xx_INTRACK_REINT 0x08 /* rx (exception) interrupt */
123 void *sc_ackfunc_arg;
124
125 u_char sc_rsmr;
126 u_char sc_tsmr;
127 u_char sc_msmr;
128
129 u_int sc_osc;
130
131 /*
132 * everything above here needs to be setup by our caller, and
133 * everything below here is setup by the generic cd18xx code.
134 */
135 u_int sc_chip_id; /* unique per-cd18xx value */
136 void *sc_si; /* softintr(9) cookie */
137
138 struct cdtty_port sc_ports[8];
139
140 u_char sc_pprh;
141 u_char sc_pprl;
142 };
143
144 /* hard interrupt, to be configured by our caller */
145 int cd18xx_hardintr(void *);
146
147 /* main attach routine called by the high level driver */
148 void cd18xx_attach(struct cd18xx_softc *);
149
150 /*
151 * device minor layout has bit 19 for dialout and bits 0..18 for the unit.
152 * the first 3 bits of the unit are the channel number inside a single
153 * cd18xx instance, and the remaining bits indicate the instance number.
154 */
155 #define CD18XX_TTY(x) (minor(x) & 0x7ffff)
156 #define CD18XX_CHANNEL(x) (minor(x) & 7)
157 #define CD18XX_INSTANCE(x) ((minor(x) >> 3) & 0xffff)
158 #define CD18XX_DIALOUT(x) ((minor(x) & 0x80000) != 0)
159
160 /* short helpers for read/write */
161 #define cd18xx_read(sc, o) \
162 bus_space_read_1((sc)->sc_tag, (sc)->sc_handle, o)
163 #define cd18xx_read_multi(sc, o, b, c) \
164 bus_space_read_multi_1((sc)->sc_tag, (sc)->sc_handle, o, b, c)
165
166 #define cd18xx_write(sc, o, v) \
167 bus_space_write_1((sc)->sc_tag, (sc)->sc_handle, o, v)
168 #define cd18xx_write_multi(sc, o, b, c) \
169 bus_space_write_multi_1((sc)->sc_tag, (sc)->sc_handle, o, b, c)
170
171 /* set the current channel */
172 #define cd18xx_set_car(sc, c) \
173 do { \
174 bus_space_write_1((sc)->sc_tag, (sc)->sc_handle, CD18xx_CAR, c); \
175 delay(1); \
176 } while (0)
177
178 /* get the current channel */
179 #define cd18xx_get_gscr1_channel(sc) \
180 ((bus_space_read_1((sc)->sc_tag, (sc)->sc_handle, CD18xx_GSCR1) >> 2)&7)
Cache object: 4160de87f959fdcaab0a0886c0917064
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