150397Sobrien/* $NetBSD: obio.c,v 1.11 2003/07/15 00:25:05 lukem Exp $ */ 2132718Skan 350397Sobrien/*- 4132718Skan * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc. 550397Sobrien * All rights reserved. 6132718Skan * 750397Sobrien * Written by Jason R. Thorpe for Wasabi Systems, Inc. 850397Sobrien * 950397Sobrien * Redistribution and use in source and binary forms, with or without 1050397Sobrien * modification, are permitted provided that the following conditions 11132718Skan * are met: 1250397Sobrien * 1. Redistributions of source code must retain the above copyright 1350397Sobrien * notice, this list of conditions and the following disclaimer. 1450397Sobrien * 2. Redistributions in binary form must reproduce the above copyright 1550397Sobrien * notice, this list of conditions and the following disclaimer in the 1650397Sobrien * documentation and/or other materials provided with the distribution. 17132718Skan * 3. All advertising materials mentioning features or use of this software 18169689Skan * must display the following acknowledgement: 19169689Skan * This product includes software developed for the NetBSD Project by 2050397Sobrien * Wasabi Systems, Inc. 2150397Sobrien * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22117395Skan * or promote products derived from this software without specific prior 2350397Sobrien * written permission. 2452284Sobrien * 2590075Sobrien * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 2690075Sobrien * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 2752284Sobrien * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 2852284Sobrien * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29117395Skan * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30117395Skan * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31117395Skan * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32117395Skan * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33117395Skan * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34117395Skan * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35117395Skan * POSSIBILITY OF SUCH DAMAGE. 36117395Skan */ 37117395Skan 38117395Skan/* 3950397Sobrien * On-board device autoconfiguration support for Intel IQ80321 4050397Sobrien * evaluation boards. 4150397Sobrien */ 4250397Sobrien 4350397Sobrien#include <sys/cdefs.h> 4450397Sobrien__FBSDID("$FreeBSD: releng/11.0/sys/mips/malta/obio.c 294883 2016-01-27 02:23:54Z jhibbits $"); 4550397Sobrien 4650397Sobrien#include <sys/param.h> 4750397Sobrien#include <sys/systm.h> 4850397Sobrien#include <sys/bus.h> 4950397Sobrien#include <sys/kernel.h> 5050397Sobrien#include <sys/module.h> 5150397Sobrien#include <sys/rman.h> 5250397Sobrien#include <sys/malloc.h> 5350397Sobrien 5450397Sobrien#include <machine/bus.h> 5550397Sobrien 5650397Sobrien#include <mips/malta/maltareg.h> 5750397Sobrien#include <mips/malta/obiovar.h> 5850397Sobrien 5950397Sobrienint obio_probe(device_t); 6050397Sobrienint obio_attach(device_t); 6150397Sobrien 6250397Sobrien/* 6350397Sobrien * A bit tricky and hackish. Since we need OBIO to rely 6450397Sobrien * on PCI we make it pseudo-pci device. But there should 6550397Sobrien * be only one such device, so we use this static flag 6650397Sobrien * to prevent false positives on every real PCI device probe. 6750397Sobrien */ 6850397Sobrienstatic int have_one = 0; 6950397Sobrien 7050397Sobrienint 7150397Sobrienobio_probe(device_t dev) 7250397Sobrien{ 7350397Sobrien if (!have_one) { 7450397Sobrien have_one = 1; 7550397Sobrien return 0; 7650397Sobrien } 7750397Sobrien return (ENXIO); 7850397Sobrien} 7950397Sobrien 8050397Sobrienint 8150397Sobrienobio_attach(device_t dev) 8250397Sobrien{ 8350397Sobrien struct obio_softc *sc = device_get_softc(dev); 8450397Sobrien 8550397Sobrien sc->oba_st = mips_bus_space_generic; 8650397Sobrien sc->oba_addr = MIPS_PHYS_TO_KSEG1(MALTA_UART0ADR); 8750397Sobrien sc->oba_size = MALTA_PCIMEM3_SIZE; 8850397Sobrien sc->oba_rman.rm_type = RMAN_ARRAY; 8950397Sobrien sc->oba_rman.rm_descr = "OBIO I/O"; 9050397Sobrien if (rman_init(&sc->oba_rman) != 0 || 9150397Sobrien rman_manage_region(&sc->oba_rman, 9250397Sobrien sc->oba_addr, sc->oba_addr + sc->oba_size) != 0) 93132718Skan panic("obio_attach: failed to set up I/O rman"); 9450397Sobrien sc->oba_irq_rman.rm_type = RMAN_ARRAY; 9550397Sobrien sc->oba_irq_rman.rm_descr = "OBIO IRQ"; 9690075Sobrien 9790075Sobrien /* 9890075Sobrien * This module is intended for UART purposes only and 9990075Sobrien * it's IRQ is 4 10090075Sobrien */ 101102780Skan if (rman_init(&sc->oba_irq_rman) != 0 || 102102780Skan rman_manage_region(&sc->oba_irq_rman, 4, 4) != 0) 103 panic("obio_attach: failed to set up IRQ rman"); 104 105 device_add_child(dev, "uart", 0); 106 bus_generic_probe(dev); 107 bus_generic_attach(dev); 108 109 return (0); 110} 111 112static struct resource * 113obio_alloc_resource(device_t bus, device_t child, int type, int *rid, 114 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 115{ 116 struct resource *rv; 117 struct rman *rm; 118 bus_space_tag_t bt = 0; 119 bus_space_handle_t bh = 0; 120 struct obio_softc *sc = device_get_softc(bus); 121 122 switch (type) { 123 case SYS_RES_IRQ: 124 rm = &sc->oba_irq_rman; 125 break; 126 case SYS_RES_MEMORY: 127 return (NULL); 128 case SYS_RES_IOPORT: 129 rm = &sc->oba_rman; 130 bt = sc->oba_st; 131 bh = sc->oba_addr; 132 start = bh; 133 break; 134 default: 135 return (NULL); 136 } 137 138 139 rv = rman_reserve_resource(rm, start, end, count, flags, child); 140 if (rv == NULL) 141 return (NULL); 142 if (type == SYS_RES_IRQ) 143 return (rv); 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, pci, obio_driver, obio_devclass, 0, 0); 184