1194140Simp/* $NetBSD: obio.c,v 1.11 2003/07/15 00:25:05 lukem Exp $ */ 2194140Simp 3194140Simp/*- 4194140Simp * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc. 5194140Simp * All rights reserved. 6194140Simp * 7194140Simp * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8194140Simp * 9194140Simp * Redistribution and use in source and binary forms, with or without 10194140Simp * modification, are permitted provided that the following conditions 11194140Simp * are met: 12194140Simp * 1. Redistributions of source code must retain the above copyright 13194140Simp * notice, this list of conditions and the following disclaimer. 14194140Simp * 2. Redistributions in binary form must reproduce the above copyright 15194140Simp * notice, this list of conditions and the following disclaimer in the 16194140Simp * documentation and/or other materials provided with the distribution. 17194140Simp * 3. All advertising materials mentioning features or use of this software 18194140Simp * must display the following acknowledgement: 19194140Simp * This product includes software developed for the NetBSD Project by 20194140Simp * Wasabi Systems, Inc. 21194140Simp * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22194140Simp * or promote products derived from this software without specific prior 23194140Simp * written permission. 24194140Simp * 25194140Simp * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26194140Simp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27194140Simp * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28194140Simp * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29194140Simp * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30194140Simp * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31194140Simp * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32194140Simp * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33194140Simp * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34194140Simp * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35194140Simp * POSSIBILITY OF SUCH DAMAGE. 36194140Simp */ 37194140Simp 38194140Simp/* 39202985Simp * On-board device autoconfiguration support for Cavium OCTEON 1 family of 40202985Simp * SoC devices. 41194140Simp */ 42194140Simp 43194140Simp#include <sys/cdefs.h> 44194140Simp__FBSDID("$FreeBSD$"); 45194140Simp 46194140Simp#include <sys/param.h> 47194140Simp#include <sys/systm.h> 48194140Simp#include <sys/bus.h> 49194140Simp#include <sys/kernel.h> 50194140Simp#include <sys/module.h> 51194140Simp#include <sys/rman.h> 52194140Simp#include <sys/malloc.h> 53194140Simp 54194140Simp#include <machine/bus.h> 55194140Simp 56202867Simp#include <mips/cavium/octeon_pcmap_regs.h> 57202063Simp#include <mips/cavium/obiovar.h> 58194140Simp 59210311Sjmallett#include <contrib/octeon-sdk/cvmx.h> 60232812Sjmallett#include <mips/cavium/octeon_irq.h> 61210311Sjmallett 62202985Simpextern struct bus_space octeon_uart_tag; 63202985Simp 64210311Sjmallettstatic void obio_identify(driver_t *, device_t); 65210311Sjmallettstatic int obio_probe(device_t); 66210311Sjmallettstatic int obio_attach(device_t); 67194140Simp 68210311Sjmallettstatic void 69210311Sjmallettobio_identify(driver_t *drv, device_t parent) 70210311Sjmallett{ 71210311Sjmallett BUS_ADD_CHILD(parent, 0, "obio", 0); 72210311Sjmallett} 73194140Simp 74210311Sjmallettstatic int 75194140Simpobio_probe(device_t dev) 76194140Simp{ 77210311Sjmallett if (device_get_unit(dev) != 0) 78210311Sjmallett return (ENXIO); 79210311Sjmallett return (0); 80194140Simp} 81194140Simp 82210311Sjmallettstatic int 83194140Simpobio_attach(device_t dev) 84194140Simp{ 85194140Simp struct obio_softc *sc = device_get_softc(dev); 86194140Simp 87196236Simp sc->oba_st = mips_bus_space_generic; 88210311Sjmallett /* 89210311Sjmallett * XXX 90210311Sjmallett * Here and elsewhere using RBR as a base address because it kind of 91210311Sjmallett * is, but that feels pretty sloppy. Should consider adding a define 92210311Sjmallett * that's more semantic, at least. 93210311Sjmallett */ 94210311Sjmallett sc->oba_addr = CVMX_MIO_UARTX_RBR(0); 95194140Simp sc->oba_size = 0x10000; 96194140Simp sc->oba_rman.rm_type = RMAN_ARRAY; 97194140Simp sc->oba_rman.rm_descr = "OBIO I/O"; 98194140Simp if (rman_init(&sc->oba_rman) != 0 || 99194140Simp rman_manage_region(&sc->oba_rman, 100194140Simp sc->oba_addr, sc->oba_addr + sc->oba_size) != 0) 101194140Simp panic("obio_attach: failed to set up I/O rman"); 102194140Simp sc->oba_irq_rman.rm_type = RMAN_ARRAY; 103194140Simp sc->oba_irq_rman.rm_descr = "OBIO IRQ"; 104194140Simp 105194140Simp /* 106194140Simp * This module is intended for UART purposes only and 107210311Sjmallett * manages IRQs for UART0 and UART1. 108194140Simp */ 109194140Simp if (rman_init(&sc->oba_irq_rman) != 0 || 110232812Sjmallett rman_manage_region(&sc->oba_irq_rman, OCTEON_IRQ_UART0, OCTEON_IRQ_UART1) != 0) 111194140Simp panic("obio_attach: failed to set up IRQ rman"); 112194140Simp 113194140Simp device_add_child(dev, "uart", 1); /* Setup Uart-1 first. */ 114194140Simp device_add_child(dev, "uart", 0); /* Uart-0 next. So it is first in console list */ 115194140Simp bus_generic_probe(dev); 116194140Simp bus_generic_attach(dev); 117194140Simp return (0); 118194140Simp} 119194140Simp 120194140Simpstatic struct resource * 121194140Simpobio_alloc_resource(device_t bus, device_t child, int type, int *rid, 122194140Simp u_long start, u_long end, u_long count, u_int flags) 123194140Simp{ 124194140Simp struct resource *rv; 125194140Simp struct rman *rm; 126194140Simp bus_space_tag_t bt = 0; 127194140Simp bus_space_handle_t bh = 0; 128194140Simp struct obio_softc *sc = device_get_softc(bus); 129194140Simp 130194140Simp switch (type) { 131194140Simp case SYS_RES_IRQ: 132210311Sjmallett switch (device_get_unit(child)) { 133210311Sjmallett case 0: 134232812Sjmallett start = end = OCTEON_IRQ_UART0; 135210311Sjmallett break; 136210311Sjmallett case 1: 137232812Sjmallett start = end = OCTEON_IRQ_UART1; 138210311Sjmallett break; 139210311Sjmallett default: 140210311Sjmallett return (NULL); 141210311Sjmallett } 142194140Simp rm = &sc->oba_irq_rman; 143194140Simp break; 144194140Simp case SYS_RES_MEMORY: 145194140Simp return (NULL); 146194140Simp case SYS_RES_IOPORT: 147194140Simp rm = &sc->oba_rman; 148202985Simp bt = &octeon_uart_tag; 149210311Sjmallett bh = CVMX_MIO_UARTX_RBR(device_get_unit(child)); 150194140Simp start = bh; 151194140Simp break; 152194140Simp default: 153194140Simp return (NULL); 154194140Simp } 155194140Simp 156194140Simp rv = rman_reserve_resource(rm, start, end, count, flags, child); 157194140Simp if (rv == NULL) { 158194140Simp return (NULL); 159194140Simp } 160194140Simp if (type == SYS_RES_IRQ) { 161194140Simp return (rv); 162194140Simp } 163194140Simp rman_set_rid(rv, *rid); 164194140Simp rman_set_bustag(rv, bt); 165194140Simp rman_set_bushandle(rv, bh); 166194140Simp 167194140Simp if (0) { 168194140Simp if (bus_activate_resource(child, type, *rid, rv)) { 169194140Simp rman_release_resource(rv); 170194140Simp return (NULL); 171194140Simp } 172194140Simp } 173194140Simp return (rv); 174194140Simp 175194140Simp} 176194140Simp 177194140Simpstatic int 178194140Simpobio_activate_resource(device_t bus, device_t child, int type, int rid, 179194140Simp struct resource *r) 180194140Simp{ 181194140Simp return (0); 182194140Simp} 183194140Simpstatic device_method_t obio_methods[] = { 184210311Sjmallett /* Device methods */ 185210311Sjmallett DEVMETHOD(device_identify, obio_identify), 186210311Sjmallett DEVMETHOD(device_probe, obio_probe), 187210311Sjmallett DEVMETHOD(device_attach, obio_attach), 188194140Simp 189210311Sjmallett /* Bus methods */ 190210311Sjmallett DEVMETHOD(bus_alloc_resource, obio_alloc_resource), 191210311Sjmallett DEVMETHOD(bus_activate_resource,obio_activate_resource), 192194140Simp DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 193194140Simp DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 194194140Simp 195212843Sjmallett DEVMETHOD(bus_add_child, bus_generic_add_child), 196212843Sjmallett 197194140Simp {0, 0}, 198194140Simp}; 199194140Simp 200194140Simpstatic driver_t obio_driver = { 201194140Simp "obio", 202194140Simp obio_methods, 203194140Simp sizeof(struct obio_softc), 204194140Simp}; 205194140Simpstatic devclass_t obio_devclass; 206194140Simp 207210311SjmallettDRIVER_MODULE(obio, ciu, obio_driver, obio_devclass, 0, 0); 208