obio.c revision 202867
1/* $NetBSD: obio.c,v 1.11 2003/07/15 00:25:05 lukem Exp $ */ 2 3/*- 4 * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38/* 39 * On-board device autoconfiguration support for Intel IQ80321 40 * evaluation boards. 41 */ 42 43#include <sys/cdefs.h> 44__FBSDID("$FreeBSD: head/sys/mips/cavium/obio.c 202867 2010-01-23 06:42:47Z imp $"); 45 46#include <sys/param.h> 47#include <sys/systm.h> 48#include <sys/bus.h> 49#include <sys/kernel.h> 50#include <sys/module.h> 51#include <sys/rman.h> 52#include <sys/malloc.h> 53 54#include <machine/bus.h> 55 56#include <mips/cavium/octeon_pcmap_regs.h> 57#include <mips/cavium/obiovar.h> 58 59int obio_probe(device_t); 60int obio_attach(device_t); 61 62/* 63 * We need only one obio. Any other device hanging off of it, 64 * shouldn't cause multiple of these to be found. 65 */ 66static int have_one = 0; 67 68int 69obio_probe(device_t dev) 70{ 71 if (!have_one) { 72 have_one = 1; 73 return 0; 74 } 75 return (ENXIO); 76} 77 78int 79obio_attach(device_t dev) 80{ 81 struct obio_softc *sc = device_get_softc(dev); 82 83 sc->oba_st = mips_bus_space_generic; 84 sc->oba_addr = OCTEON_MIO_UART0; 85 sc->oba_size = 0x10000; 86 sc->oba_rman.rm_type = RMAN_ARRAY; 87 sc->oba_rman.rm_descr = "OBIO I/O"; 88 if (rman_init(&sc->oba_rman) != 0 || 89 rman_manage_region(&sc->oba_rman, 90 sc->oba_addr, sc->oba_addr + sc->oba_size) != 0) 91 panic("obio_attach: failed to set up I/O rman"); 92 sc->oba_irq_rman.rm_type = RMAN_ARRAY; 93 sc->oba_irq_rman.rm_descr = "OBIO IRQ"; 94 95 /* 96 * This module is intended for UART purposes only and 97 * it's IRQ is 0 corresponding to IP2. 98 */ 99 if (rman_init(&sc->oba_irq_rman) != 0 || 100 rman_manage_region(&sc->oba_irq_rman, 0, 0) != 0) 101 panic("obio_attach: failed to set up IRQ rman"); 102 103 device_add_child(dev, "uart", 1); /* Setup Uart-1 first. */ 104 device_add_child(dev, "uart", 0); /* Uart-0 next. So it is first in console list */ 105 bus_generic_probe(dev); 106 bus_generic_attach(dev); 107 return (0); 108} 109 110static struct resource * 111obio_alloc_resource(device_t bus, device_t child, int type, int *rid, 112 u_long start, u_long end, u_long count, u_int flags) 113{ 114 struct resource *rv; 115 struct rman *rm; 116 bus_space_tag_t bt = 0; 117 bus_space_handle_t bh = 0; 118 struct obio_softc *sc = device_get_softc(bus); 119 120 switch (type) { 121 case SYS_RES_IRQ: 122 rm = &sc->oba_irq_rman; 123 break; 124 case SYS_RES_MEMORY: 125 return (NULL); 126 case SYS_RES_IOPORT: 127 rm = &sc->oba_rman; 128 bt = sc->oba_st; 129 bh = device_get_unit(child) ? 130 OCTEON_MIO_UART1 : OCTEON_MIO_UART0; 131 start = bh; 132 break; 133 default: 134 return (NULL); 135 } 136 137 rv = rman_reserve_resource(rm, start, end, count, flags, child); 138 if (rv == NULL) { 139 return (NULL); 140 } 141 if (type == SYS_RES_IRQ) { 142 return (rv); 143 } 144 rman_set_rid(rv, *rid); 145 rman_set_bustag(rv, bt); 146 rman_set_bushandle(rv, bh); 147 148 if (0) { 149 if (bus_activate_resource(child, type, *rid, rv)) { 150 rman_release_resource(rv); 151 return (NULL); 152 } 153 } 154 return (rv); 155 156} 157 158static int 159obio_activate_resource(device_t bus, device_t child, int type, int rid, 160 struct resource *r) 161{ 162 return (0); 163} 164static device_method_t obio_methods[] = { 165 DEVMETHOD(device_probe, obio_probe), 166 DEVMETHOD(device_attach, obio_attach), 167 168 DEVMETHOD(bus_alloc_resource, obio_alloc_resource), 169 DEVMETHOD(bus_activate_resource, obio_activate_resource), 170 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 171 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 172 173 {0, 0}, 174}; 175 176static driver_t obio_driver = { 177 "obio", 178 obio_methods, 179 sizeof(struct obio_softc), 180}; 181static devclass_t obio_devclass; 182 183DRIVER_MODULE(obio, nexus, obio_driver, obio_devclass, 0, 0); 184