comvar.h revision 1.52.2.1
1 /* $NetBSD: comvar.h,v 1.52.2.1 2006/06/15 16:30:26 gdamore Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Christopher G. Demetriou 17 * for the NetBSD Project. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include "rnd.h" 34 #include "opt_multiprocessor.h" 35 #include "opt_lockdebug.h" 36 #include "opt_com.h" 37 #include "opt_kgdb.h" 38 39 #if NRND > 0 && defined(RND_COM) 40 #include <sys/rnd.h> 41 #endif 42 43 #include <sys/callout.h> 44 #include <sys/timepps.h> 45 #include <sys/lock.h> 46 47 #include <dev/ic/comreg.h> /* for COM_NPORTS */ 48 49 struct com_regs; 50 51 int comcnattach(bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t); 52 int comcnattach1(struct com_regs *, int, int, int, tcflag_t); 53 54 #ifdef KGDB 55 int com_kgdb_attach(bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t); 56 int com_kgdb_attach1(struct com_regs *, int, int, int, tcflag_t); 57 #endif 58 59 int com_is_console(bus_space_tag_t, bus_addr_t, bus_space_handle_t *); 60 61 /* Hardware flag masks */ 62 #define COM_HW_NOIEN 0x01 63 #define COM_HW_FIFO 0x02 64 /* 0x04 free for use */ 65 #define COM_HW_FLOW 0x08 66 #define COM_HW_DEV_OK 0x20 67 #define COM_HW_CONSOLE 0x40 68 #define COM_HW_KGDB 0x80 69 #define COM_HW_TXFIFO_DISABLE 0x100 70 #define COM_HW_NO_TXPRELOAD 0x200 71 72 /* Buffer size for character buffer */ 73 #define COM_RING_SIZE 2048 74 75 #ifdef COM_REGMAP 76 #define COM_REG_RXDATA 0 77 #define COM_REG_TXDATA 1 78 #define COM_REG_DLBL 2 79 #define COM_REG_DLBH 3 80 #define COM_REG_IER 4 81 #define COM_REG_IIR 5 82 #define COM_REG_FIFO 6 83 #define COM_REG_EFR 7 84 #define COM_REG_LCR 8 85 #define COM_REG_MCR 9 86 #define COM_REG_LSR 10 87 #define COM_REG_MSR 11 88 89 struct com_regs { 90 bus_space_tag_t iot; 91 bus_space_handle_t ioh; 92 bus_addr_t iobase; 93 bus_size_t nports; 94 bus_size_t map[16]; 95 }; 96 97 extern const bus_size_t com_std_map[16]; 98 99 #define COM_INIT_REGS(regs, tag, hdl, addr) \ 100 regs.iot = tag; \ 101 regs.ioh = hdl; \ 102 regs.iobase = addr; \ 103 regs.nports = COM_NPORTS; \ 104 memcpy(regs.map, com_std_map, sizeof (regs.map)) 105 106 107 #else 108 #define COM_REG_RXDATA com_data 109 #define COM_REG_TXDATA com_data 110 #define COM_REG_DLBL com_dlbl 111 #define COM_REG_DLBH com_dlbh 112 #define COM_REG_IER com_ier 113 #define COM_REG_IIR com_iir 114 #define COM_REG_FIFO com_fifo 115 #define COM_REG_EFR com_efr 116 #define COM_REG_LCR com_lctl 117 #define COM_REG_MCR com_mcr 118 #define COM_REG_LSR com_lsr 119 #define COM_REG_MSR com_msr 120 121 struct com_regs { 122 bus_space_tag_t iot; 123 bus_space_handle_t ioh; 124 bus_addr_t iobase; 125 bus_size_t nports; 126 }; 127 128 #define COM_INIT_REGS(regs, tag, hdl, addr) \ 129 regs.iot = tag; \ 130 regs.ioh = hdl; \ 131 regs.iobase = addr; \ 132 regs.nports = COM_NPORTS 133 134 #endif 135 136 struct com_softc { 137 struct device sc_dev; 138 void *sc_si; 139 struct tty *sc_tty; 140 141 struct callout sc_diag_callout; 142 143 int sc_frequency; 144 145 struct com_regs sc_regs; 146 bus_space_handle_t sc_hayespioh; 147 148 149 u_int sc_overflows, 150 sc_floods, 151 sc_errors; 152 153 int sc_hwflags, 154 sc_swflags; 155 u_int sc_fifolen; 156 157 u_int sc_r_hiwat, 158 sc_r_lowat; 159 u_char *volatile sc_rbget, 160 *volatile sc_rbput; 161 volatile u_int sc_rbavail; 162 u_char *sc_rbuf, 163 *sc_ebuf; 164 165 u_char *sc_tba; 166 u_int sc_tbc, 167 sc_heldtbc; 168 169 volatile u_char sc_rx_flags, 170 #define RX_TTY_BLOCKED 0x01 171 #define RX_TTY_OVERFLOWED 0x02 172 #define RX_IBUF_BLOCKED 0x04 173 #define RX_IBUF_OVERFLOWED 0x08 174 #define RX_ANY_BLOCK 0x0f 175 sc_tx_busy, 176 sc_tx_done, 177 sc_tx_stopped, 178 sc_st_check, 179 sc_rx_ready; 180 181 volatile u_char sc_heldchange; 182 volatile u_char sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr, 183 sc_mcr_active, sc_lcr, sc_ier, sc_fifo, sc_dlbl, sc_dlbh, sc_efr; 184 u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd; 185 186 #ifdef COM_HAYESP 187 u_char sc_prescaler; 188 #endif 189 190 /* 191 * There are a great many almost-ns16550-compatible UARTs out 192 * there, which have minor differences. The type field here 193 * lets us distinguish between them. 194 */ 195 int sc_type; 196 #define COM_TYPE_NORMAL 0 /* normal 16x50 */ 197 #define COM_TYPE_HAYESP 1 /* Hayes ESP modem */ 198 #define COM_TYPE_PXA2x0 2 /* Intel PXA2x0 processor built-in */ 199 #define COM_TYPE_AU1x00 3 /* AMD/Alchemy Au1x000 proc. built-in */ 200 201 /* power management hooks */ 202 int (*enable)(struct com_softc *); 203 void (*disable)(struct com_softc *); 204 int enabled; 205 206 #ifdef __HAVE_TIMECOUNTER 207 struct pps_state sc_pps_state; /* pps state */ 208 #else /* !__HAVE_TIMECOUNTER */ 209 /* PPS signal on DCD, with or without inkernel clock disciplining */ 210 u_char sc_ppsmask; /* pps signal mask */ 211 u_char sc_ppsassert; /* pps leading edge */ 212 u_char sc_ppsclear; /* pps trailing edge */ 213 pps_info_t ppsinfo; 214 pps_params_t ppsparam; 215 #endif /* !__HAVE_TIMECOUNTER */ 216 217 #if NRND > 0 && defined(RND_COM) 218 rndsource_element_t rnd_source; 219 #endif 220 struct simplelock sc_lock; 221 }; 222 223 int comprobe1(bus_space_tag_t, bus_space_handle_t); 224 int comintr(void *); 225 void com_attach_subr(struct com_softc *); 226 int com_probe_subr(struct com_regs *); 227 int com_detach(struct device *, int); 228 int com_activate(struct device *, enum devact); 229 230 #ifndef __HAVE_GENERIC_SOFT_INTERRUPTS 231 #ifdef __NO_SOFT_SERIAL_INTERRUPT 232 #define IPL_SERIAL IPL_TTY 233 #define splserial() spltty() 234 #define IPL_SOFTSERIAL IPL_TTY 235 #define splsoftserial() spltty() 236 #endif 237 #endif 238
Indexes created Thu Oct 16 14:10:15 GMT 2025