comvar.h revision 1.44
1 /* $NetBSD: comvar.h,v 1.44 2003/06/05 13:40:38 scw 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 #if (defined(MULTIPROCESSOR) || defined(LOCKDEBUG)) && defined(COM_MPLOCK) 46 #include <sys/lock.h> 47 #endif 48 49 int comcnattach __P((bus_space_tag_t, bus_addr_t, int, int, tcflag_t)); 50 51 #ifdef KGDB 52 int com_kgdb_attach __P((bus_space_tag_t, bus_addr_t, int, int, tcflag_t)); 53 #endif 54 55 int com_is_console __P((bus_space_tag_t, bus_addr_t, bus_space_handle_t *)); 56 57 /* Hardware flag masks */ 58 #define COM_HW_NOIEN 0x01 59 #define COM_HW_FIFO 0x02 60 #define COM_HW_HAYESP 0x04 61 #define COM_HW_FLOW 0x08 62 #define COM_HW_DEV_OK 0x20 63 #define COM_HW_CONSOLE 0x40 64 #define COM_HW_KGDB 0x80 65 #define COM_HW_TXFIFO_DISABLE 0x100 66 #define COM_HW_NO_TXPRELOAD 0x200 67 #define COM_HW_PXA2X0 0x400 68 69 /* Buffer size for character buffer */ 70 #define COM_RING_SIZE 2048 71 72 struct com_softc { 73 struct device sc_dev; 74 void *sc_si; 75 struct tty *sc_tty; 76 77 struct callout sc_diag_callout; 78 79 bus_addr_t sc_iobase; /* XXX ISA-centric name */ 80 int sc_frequency; 81 82 bus_space_tag_t sc_iot; 83 bus_space_handle_t sc_ioh; 84 bus_space_handle_t sc_hayespioh; 85 86 u_int sc_overflows, 87 sc_floods, 88 sc_errors; 89 90 int sc_hwflags, 91 sc_swflags; 92 u_int sc_fifolen; 93 94 u_int sc_r_hiwat, 95 sc_r_lowat; 96 u_char *volatile sc_rbget, 97 *volatile sc_rbput; 98 volatile u_int sc_rbavail; 99 u_char *sc_rbuf, 100 *sc_ebuf; 101 102 u_char *sc_tba; 103 u_int sc_tbc, 104 sc_heldtbc; 105 106 volatile u_char sc_rx_flags, 107 #define RX_TTY_BLOCKED 0x01 108 #define RX_TTY_OVERFLOWED 0x02 109 #define RX_IBUF_BLOCKED 0x04 110 #define RX_IBUF_OVERFLOWED 0x08 111 #define RX_ANY_BLOCK 0x0f 112 sc_tx_busy, 113 sc_tx_done, 114 sc_tx_stopped, 115 sc_st_check, 116 sc_rx_ready; 117 118 volatile u_char sc_heldchange; 119 volatile u_char sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr, 120 sc_mcr_active, sc_lcr, sc_ier, sc_fifo, sc_dlbl, sc_dlbh, sc_efr; 121 u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd; 122 123 #ifdef COM_HAYESP 124 u_char sc_prescaler; 125 #endif 126 127 /* power management hooks */ 128 int (*enable) __P((struct com_softc *)); 129 void (*disable) __P((struct com_softc *)); 130 int enabled; 131 132 /* PPS signal on DCD, with or without inkernel clock disciplining */ 133 u_char sc_ppsmask; /* pps signal mask */ 134 u_char sc_ppsassert; /* pps leading edge */ 135 u_char sc_ppsclear; /* pps trailing edge */ 136 pps_info_t ppsinfo; 137 pps_params_t ppsparam; 138 139 #if NRND > 0 && defined(RND_COM) 140 rndsource_element_t rnd_source; 141 #endif 142 #if (defined(MULTIPROCESSOR) || defined(LOCKDEBUG)) && defined(COM_MPLOCK) 143 struct simplelock sc_lock; 144 #endif 145 }; 146 147 /* Macros to clear/set/test flags. */ 148 #define SET(t, f) (t) |= (f) 149 #define CLR(t, f) (t) &= ~(f) 150 #define ISSET(t, f) ((t) & (f)) 151 152 int comprobe1 __P((bus_space_tag_t, bus_space_handle_t)); 153 int comintr __P((void *)); 154 void com_attach_subr __P((struct com_softc *)); 155 int com_detach __P((struct device *, int)); 156 int com_activate __P((struct device *, enum devact)); 157 158 #ifndef __HAVE_GENERIC_SOFT_INTERRUPTS 159 #ifdef __NO_SOFT_SERIAL_INTERRUPT 160 #define IPL_SERIAL IPL_TTY 161 #define splserial() spltty() 162 #define IPL_SOFTSERIAL IPL_TTY 163 #define splsoftserial() spltty() 164 #endif 165 #endif 166
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