comvar.h revision 1.51
1 /* $NetBSD: comvar.h,v 1.51 2006/03/05 17:33:33 christos 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 int comcnattach(bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t); 48 49 #ifdef KGDB 50 int com_kgdb_attach(bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t); 51 #endif 52 53 int com_is_console(bus_space_tag_t, bus_addr_t, bus_space_handle_t *); 54 55 /* Hardware flag masks */ 56 #define COM_HW_NOIEN 0x01 57 #define COM_HW_FIFO 0x02 58 /* 0x04 free for use */ 59 #define COM_HW_FLOW 0x08 60 #define COM_HW_DEV_OK 0x20 61 #define COM_HW_CONSOLE 0x40 62 #define COM_HW_KGDB 0x80 63 #define COM_HW_TXFIFO_DISABLE 0x100 64 #define COM_HW_NO_TXPRELOAD 0x200 65 66 /* Buffer size for character buffer */ 67 #define COM_RING_SIZE 2048 68 69 struct com_softc { 70 struct device sc_dev; 71 void *sc_si; 72 struct tty *sc_tty; 73 74 struct callout sc_diag_callout; 75 76 bus_addr_t sc_iobase; /* XXX ISA-centric name */ 77 int sc_frequency; 78 79 bus_space_tag_t sc_iot; 80 bus_space_handle_t sc_ioh; 81 bus_space_handle_t sc_hayespioh; 82 83 u_int sc_overflows, 84 sc_floods, 85 sc_errors; 86 87 int sc_hwflags, 88 sc_swflags; 89 u_int sc_fifolen; 90 91 u_int sc_r_hiwat, 92 sc_r_lowat; 93 u_char *volatile sc_rbget, 94 *volatile sc_rbput; 95 volatile u_int sc_rbavail; 96 u_char *sc_rbuf, 97 *sc_ebuf; 98 99 u_char *sc_tba; 100 u_int sc_tbc, 101 sc_heldtbc; 102 103 volatile u_char sc_rx_flags, 104 #define RX_TTY_BLOCKED 0x01 105 #define RX_TTY_OVERFLOWED 0x02 106 #define RX_IBUF_BLOCKED 0x04 107 #define RX_IBUF_OVERFLOWED 0x08 108 #define RX_ANY_BLOCK 0x0f 109 sc_tx_busy, 110 sc_tx_done, 111 sc_tx_stopped, 112 sc_st_check, 113 sc_rx_ready; 114 115 volatile u_char sc_heldchange; 116 volatile u_char sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr, 117 sc_mcr_active, sc_lcr, sc_ier, sc_fifo, sc_dlbl, sc_dlbh, sc_efr; 118 u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd; 119 120 #ifdef COM_HAYESP 121 u_char sc_prescaler; 122 #endif 123 124 /* 125 * There are a great many almost-ns16550-compatible UARTs out 126 * there, which have minor differences. The type field here 127 * lets us distinguish between them. 128 */ 129 int sc_type; 130 #define COM_TYPE_NORMAL 0 /* normal 16x50 */ 131 #define COM_TYPE_HAYESP 1 /* Hayes ESP modem */ 132 #define COM_TYPE_PXA2x0 2 /* Intel PXA2x0 processor built-in */ 133 #define COM_TYPE_AU1x00 3 /* AMD/Alchemy Au1x000 proc. built-in */ 134 135 /* power management hooks */ 136 int (*enable)(struct com_softc *); 137 void (*disable)(struct com_softc *); 138 int enabled; 139 140 /* PPS signal on DCD, with or without inkernel clock disciplining */ 141 u_char sc_ppsmask; /* pps signal mask */ 142 u_char sc_ppsassert; /* pps leading edge */ 143 u_char sc_ppsclear; /* pps trailing edge */ 144 pps_info_t ppsinfo; 145 pps_params_t ppsparam; 146 147 #if NRND > 0 && defined(RND_COM) 148 rndsource_element_t rnd_source; 149 #endif 150 struct simplelock sc_lock; 151 }; 152 153 int comprobe1(bus_space_tag_t, bus_space_handle_t); 154 int comintr(void *); 155 void com_attach_subr(struct com_softc *); 156 int com_detach(struct device *, int); 157 int com_activate(struct device *, enum devact); 158 159 #ifndef __HAVE_GENERIC_SOFT_INTERRUPTS 160 #ifdef __NO_SOFT_SERIAL_INTERRUPT 161 #define IPL_SERIAL IPL_TTY 162 #define splserial() spltty() 163 #define IPL_SOFTSERIAL IPL_TTY 164 #define splsoftserial() spltty() 165 #endif 166 #endif 167
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