com_dino.c revision 1.1
1/* $OpenBSD: com_dino.c,v 1.4 2007/07/15 19:25:49 kettenis Exp $ */ 2 3/* 4 * Copyright (c) 2004 Michael Shalayeff 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 25 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 26 * THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <sys/param.h> 30#include <sys/systm.h> 31#include <sys/device.h> 32#include <sys/tty.h> 33 34#include <sys/bus.h> 35#include <machine/intr.h> 36#include <machine/iomod.h> 37#include <machine/autoconf.h> 38 39#include <dev/ic/comreg.h> 40#include <dev/ic/comvar.h> 41 42#include <hppa/dev/cpudevs.h> 43#include <hppa/hppa/machdep.h> 44 45void *dino_intr_establish(void *sc, int irq, int pri, 46 int (*handler)(void *v), void *arg); 47 48#define COM_DINO_FREQ 7272700 49 50struct com_dino_softc { 51 struct com_softc sc_com; /* real "com" softc */ 52 void *sc_ih; /* interrupt handler */ 53}; 54 55struct com_dino_regs { 56 uint8_t reset; 57 uint8_t pad0[3]; 58 uint8_t test; 59#define COM_DINO_PAR_LOOP 0x01 60#define COM_DINO_CLK_SEL 0x02 61 uint8_t pad1[3]; 62 uint32_t iodc; 63 uint8_t pad2[0x54]; 64 uint8_t dither; 65}; 66 67int com_dino_match(device_t, cfdata_t, void *); 68void com_dino_attach(device_t, device_t, void *); 69 70CFATTACH_DECL_NEW(com_dino, sizeof(struct com_dino_softc), com_dino_match, 71 com_dino_attach, NULL, NULL); 72 73int 74com_dino_match(device_t parent, cfdata_t match, void *aux) 75{ 76 struct confargs *ca = aux; 77 78 if (ca->ca_type.iodc_type != HPPA_TYPE_FIO || 79 ca->ca_type.iodc_sv_model != HPPA_FIO_GRS232) 80 return (0); 81 82 return (1); 83 /* HOZER comprobe1(ca->ca_iot, ca->ca_hpa + IOMOD_DEVOFFSET); */ 84} 85 86void 87com_dino_attach(device_t parent, device_t self, void *aux) 88{ 89 void *sc_dino = device_private(parent); 90 struct com_dino_softc *sc_comdino = device_private(self); 91 struct com_softc *sc = &sc_comdino->sc_com; 92 struct confargs *ca = aux; 93 struct com_dino_regs *regs = (struct com_dino_regs *)ca->ca_hpa; 94 int pagezero_cookie; 95 96 bus_addr_t iobase; 97 bus_space_handle_t ioh; 98 99 sc->sc_dev = self; 100 iobase = (bus_addr_t)ca->ca_hpa + IOMOD_DEVOFFSET; 101 sc->sc_frequency = COM_DINO_FREQ; 102 103 /* Test if this is the console. Compare either HPA or device path. */ 104 pagezero_cookie = hppa_pagezero_map(); 105 if (PAGE0->mem_cons.pz_class == PCL_DUPLEX && 106 PAGE0->mem_cons.pz_hpa == (struct iomod *)ca->ca_hpa) { 107 108 /* 109 * This port is the console. In this case we must call 110 * comcnattach() and later com_is_console() to initialize 111 * everything properly. 112 */ 113 114 if (comcnattach(ca->ca_iot, iobase, B9600, 115 sc->sc_frequency, COM_TYPE_NORMAL, 116 (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8) != 0) { 117 aprint_error(": can't comcnattach\n"); 118 hppa_pagezero_unmap(pagezero_cookie); 119 return; 120 } 121 } 122 hppa_pagezero_unmap(pagezero_cookie); 123 124 /* 125 * Get the already initialized console ioh via com_is_console() if 126 * this is the console or map the I/O space if this isn't the console. 127 */ 128 129 if (!com_is_console(ca->ca_iot, iobase, &ioh) && 130 bus_space_map(ca->ca_iot, iobase, COM_NPORTS, 0, &ioh) != 0) { 131 aprint_error(": can't map I/O space\n"); 132 return; 133 } 134 COM_INIT_REGS(sc->sc_regs, ca->ca_iot, ioh, iobase); 135 136 /* select clock freq */ 137 regs->test = COM_DINO_CLK_SEL; 138 139 com_attach_subr(sc); 140 141 ca->ca_irq = 10; 142 143 sc_comdino->sc_ih = dino_intr_establish(sc_dino, ca->ca_irq, IPL_TTY, 144 comintr, sc); 145} 146