1 /* $NetBSD: z8530sc.h,v 1.26 2009/05/22 03:51:30 mrg 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 uint8_t *cs_reg_csr; /* ctrl, status, and reg. number. */ 115 volatile uint8_t *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 kmutex_t 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 uint8_t cs_creg[16]; /* current values */ 142 uint8_t cs_preg[16]; /* pending values */ 143 int cs_heldchange; /* change pending (creg != preg) */ 144 145 uint8_t cs_rr0; /* last rr0 processed */ 146 uint8_t cs_rr0_delta; /* rr0 changes at status intr. */ 147 uint8_t cs_rr0_mask; /* rr0 bits that stop output */ 148 uint8_t cs_rr0_dcd; /* which bit to read as DCD */ 149 uint8_t cs_rr0_cts; /* which bit to read as CTS */ 150 uint8_t cs_rr0_pps; /* which bit to use for PPS */ 151 /* the above is set only while CRTSCTS is enabled. */ 152 153 uint8_t cs_wr5_dtr; /* which bit to write as DTR */ 154 uint8_t cs_wr5_rts; /* which bit to write as RTS */ 155 /* the above is set only while CRTSCTS is enabled. */ 156 157 volatile uint8_t 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 void zs_lock_init(struct zs_chanstate *); 206 void zs_lock_chan(struct zs_chanstate *); 207 void zs_unlock_chan(struct zs_chanstate *); 208 209 int zs_check_kgdb(struct zs_chanstate *, int); 210 211
Indexes created Sat Sep 20 22:09:52 GMT 2025