pcf_ebus.c revision 130320
1130320Smarius/*- 2130320Smarius * Copyright (c) 2004 Marius Strobl, Joerg Wunsch 3130320Smarius * 4130320Smarius * derived from sys/i386/isa/pcf.c which is: 5130320Smarius * 6130320Smarius * Copyright (c) 1998 Nicolas Souchu, Marc Bouget 7130320Smarius * All rights reserved. 8130320Smarius * 9130320Smarius * Redistribution and use in source and binary forms, with or without 10130320Smarius * modification, are permitted provided that the following conditions 11130320Smarius * are met: 12130320Smarius * 1. Redistributions of source code must retain the above copyright 13130320Smarius * notice, this list of conditions and the following disclaimer. 14130320Smarius * 2. Redistributions in binary form must reproduce the above copyright 15130320Smarius * notice, this list of conditions and the following disclaimer in the 16130320Smarius * documentation and/or other materials provided with the distribution. 17130320Smarius * 18130320Smarius * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19130320Smarius * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20130320Smarius * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21130320Smarius * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22130320Smarius * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23130320Smarius * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24130320Smarius * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25130320Smarius * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26130320Smarius * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27130320Smarius * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28130320Smarius * SUCH DAMAGE. 29130320Smarius */ 30130320Smarius#include <sys/cdefs.h> 31130320Smarius__FBSDID("$FreeBSD: head/sys/dev/pcf/pcf_ebus.c 130320 2004-06-10 21:56:52Z marius $"); 32130320Smarius 33130320Smarius/* 34130320Smarius * Device specific driver for the EBus i2c devices found on some sun4u 35130320Smarius * systems. On systems not having a boot-bus controller the i2c devices 36130320Smarius * are PCF8584. 37130320Smarius * 38130320Smarius * Known onboard slave devices on the primary bus are: 39130320Smarius * 40130320Smarius * AXe: 41130320Smarius * 0x40 PCF8574 I/O fan status (CPU fans 1+2) 42130320Smarius * 0x9e PCF8591 A/D temperature (CPU + hotspot) 43130320Smarius * 44130320Smarius * AXmp: 45130320Smarius * 0x70 PCF8574 I/O fan status (fans 1-4) 46130320Smarius * 0x78 PCF8574 I/O fan fail interrupt 47130320Smarius * 0x9a PCF8591 A/D voltage (CPU core) 48130320Smarius * 0x9c PCF8591 A/D temperature (hotspots 1+2, aux. analog 1+2) 49130320Smarius * 0x9e PCF8591 A/D temperature (CPUs 1-4) 50130320Smarius * 51130320Smarius * CP1400: 52130320Smarius * 0x70 PCF8574 I/O reserved for factory use 53130320Smarius * 0x9e PCF8591 A/D temperature (CPU) 54130320Smarius * 55130320Smarius * CP1500: 56130320Smarius * 0x70 PCF8574 I/O reserved for factory use 57130320Smarius * 0x72 PCF8574 I/O geographic address + power supply status lines 58130320Smarius * 0x9e PCF8591 A/D temperature (CPU) 59130320Smarius * 0xa0 AT24C01A hostid 60130320Smarius * 61130320Smarius * For AXmp, CP1400 and CP1500 these are described in more detail in: 62130320Smarius * http://www.sun.com/oem/products/manuals/805-7581-04.pdf 63130320Smarius * 64130320Smarius */ 65130320Smarius 66130320Smarius#include <sys/param.h> 67130320Smarius#include <sys/systm.h> 68130320Smarius#include <sys/bus.h> 69130320Smarius#include <sys/kernel.h> 70130320Smarius#include <sys/module.h> 71130320Smarius#include <sys/resource.h> 72130320Smarius 73130320Smarius#include <machine/bus.h> 74130320Smarius#include <machine/resource.h> 75130320Smarius 76130320Smarius#include <sys/rman.h> 77130320Smarius 78130320Smarius#include <dev/ofw/openfirm.h> 79130320Smarius 80130320Smarius#include <sparc64/ebus/ebusvar.h> 81130320Smarius 82130320Smarius#include <dev/iicbus/iiconf.h> 83130320Smarius#include <dev/pcf/pcfvar.h> 84130320Smarius#include "iicbus_if.h" 85130320Smarius 86130320Smarius#define PCF_NAME "pcf" 87130320Smarius 88130320Smariusstatic int pcf_ebus_probe(device_t); 89130320Smariusstatic int pcf_ebus_attach(device_t); 90130320Smariusstatic int pcf_ebus_detach(device_t); 91130320Smarius 92130320Smariusstatic device_method_t pcf_ebus_methods[] = { 93130320Smarius /* device interface */ 94130320Smarius DEVMETHOD(device_probe, pcf_ebus_probe), 95130320Smarius DEVMETHOD(device_attach, pcf_ebus_attach), 96130320Smarius DEVMETHOD(device_detach, pcf_ebus_detach), 97130320Smarius 98130320Smarius /* iicbus interface */ 99130320Smarius DEVMETHOD(iicbus_callback, iicbus_null_callback), 100130320Smarius DEVMETHOD(iicbus_repeated_start, pcf_repeated_start), 101130320Smarius DEVMETHOD(iicbus_start, pcf_start), 102130320Smarius DEVMETHOD(iicbus_stop, pcf_stop), 103130320Smarius DEVMETHOD(iicbus_write, pcf_write), 104130320Smarius DEVMETHOD(iicbus_read, pcf_read), 105130320Smarius DEVMETHOD(iicbus_reset, pcf_rst_card), 106130320Smarius { 0, 0 } 107130320Smarius}; 108130320Smarius 109130320Smariusstatic devclass_t pcf_ebus_devclass; 110130320Smarius 111130320Smariusstatic driver_t pcf_ebus_driver = { 112130320Smarius PCF_NAME, 113130320Smarius pcf_ebus_methods, 114130320Smarius sizeof(struct pcf_softc), 115130320Smarius}; 116130320Smarius 117130320Smariusstatic int 118130320Smariuspcf_ebus_probe(device_t dev) 119130320Smarius{ 120130320Smarius char *compat; 121130320Smarius 122130320Smarius /* 123130320Smarius * We must not attach to this i2c device if this is a system with 124130320Smarius * a boot-bus controller. Additionally testing the compatibility 125130320Smarius * property will hopefully take care of this. 126130320Smarius */ 127130320Smarius if (strcmp("i2c", ebus_get_name(dev)) == 0) { 128130320Smarius compat = ebus_get_compat(dev); 129130320Smarius if (compat != NULL && strcmp("i2cpcf,8584", compat) == 0) { 130130320Smarius device_set_desc(dev, "PCF8584 I2C bus controller"); 131130320Smarius return (0); 132130320Smarius } 133130320Smarius } 134130320Smarius return (ENXIO); 135130320Smarius} 136130320Smarius 137130320Smariusstatic int 138130320Smariuspcf_ebus_attach(device_t dev) 139130320Smarius{ 140130320Smarius struct pcf_softc *sc; 141130320Smarius int rv = ENXIO; 142130320Smarius phandle_t node; 143130320Smarius uint64_t own_addr; 144130320Smarius 145130320Smarius sc = DEVTOSOFTC(dev); 146130320Smarius bzero(sc, sizeof(struct pcf_softc)); 147130320Smarius 148130320Smarius /* get OFW node of the pcf */ 149130320Smarius if ((node = ebus_get_node(dev)) <= 0) { 150130320Smarius device_printf(dev, "cannot get OFW node\n"); 151130320Smarius goto error; 152130320Smarius } 153130320Smarius 154130320Smarius /* IO port is mandatory */ 155130320Smarius sc->res_ioport = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 156130320Smarius &sc->rid_ioport, RF_ACTIVE); 157130320Smarius if (sc->res_ioport == 0) { 158130320Smarius device_printf(dev, "cannot reserve I/O port range\n"); 159130320Smarius goto error; 160130320Smarius } 161130320Smarius 162130320Smarius sc->pcf_flags = device_get_flags(dev); 163130320Smarius 164130320Smarius /* 165130320Smarius * XXX use poll-mode property? 166130320Smarius */ 167130320Smarius if (!(sc->pcf_flags & IIC_POLLED)) { 168130320Smarius sc->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, 169130320Smarius &sc->rid_irq, RF_ACTIVE); 170130320Smarius if (sc->res_irq == 0) { 171130320Smarius device_printf(dev, "can't reserve irq, polled mode.\n"); 172130320Smarius sc->pcf_flags |= IIC_POLLED; 173130320Smarius } 174130320Smarius } 175130320Smarius 176130320Smarius /* 177130320Smarius * XXX on AXmp there's probably a second IRQ which is the fan fail 178130320Smarius * interrupt genererated by the PCF8574 at 0x78. 179130320Smarius */ 180130320Smarius 181130320Smarius /* get address of the pcf */ 182130320Smarius if (OF_getprop(node, "own-address", &own_addr, sizeof(own_addr)) == 183130320Smarius -1) { 184130320Smarius device_printf(dev, "cannot get own address\n"); 185130320Smarius goto error; 186130320Smarius } 187130320Smarius if (bootverbose) 188130320Smarius device_printf(dev, "PCF8584 address: 0x%08llx\n", (unsigned 189130320Smarius long long)own_addr); 190130320Smarius 191130320Smarius /* reset the chip */ 192130320Smarius pcf_rst_card(dev, IIC_FASTEST, own_addr, NULL); 193130320Smarius 194130320Smarius if (sc->res_irq) { 195130320Smarius rv = BUS_SETUP_INTR(device_get_parent(dev), dev, sc->res_irq, 196130320Smarius INTR_TYPE_NET /* | INTR_ENTROPY */, pcf_intr, sc, 197130320Smarius &sc->intr_cookie); 198130320Smarius if (rv) { 199130320Smarius device_printf(dev, "could not setup IRQ\n"); 200130320Smarius goto error; 201130320Smarius } 202130320Smarius } 203130320Smarius 204130320Smarius if ((sc->iicbus = device_add_child(dev, "iicbus", -1)) == NULL) 205130320Smarius device_printf(dev, "could not allocate iicbus instance\n"); 206130320Smarius 207130320Smarius /* probe and attach the iicbus */ 208130320Smarius bus_generic_attach(dev); 209130320Smarius 210130320Smarius return (0); 211130320Smarius 212130320Smariuserror: 213130320Smarius if (sc->res_irq != 0) { 214130320Smarius bus_deactivate_resource(dev, SYS_RES_IRQ, sc->rid_irq, 215130320Smarius sc->res_irq); 216130320Smarius bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq, 217130320Smarius sc->res_irq); 218130320Smarius } 219130320Smarius if (sc->res_ioport != 0) { 220130320Smarius bus_deactivate_resource(dev, SYS_RES_IOPORT, sc->rid_ioport, 221130320Smarius sc->res_ioport); 222130320Smarius bus_release_resource(dev, SYS_RES_IOPORT, sc->rid_ioport, 223130320Smarius sc->res_ioport); 224130320Smarius } 225130320Smarius return (rv); 226130320Smarius} 227130320Smarius 228130320Smariusstatic int 229130320Smariuspcf_ebus_detach(device_t dev) 230130320Smarius{ 231130320Smarius struct pcf_softc *sc; 232130320Smarius int rv; 233130320Smarius 234130320Smarius sc = DEVTOSOFTC(dev); 235130320Smarius 236130320Smarius if ((rv = bus_generic_detach(dev)) != 0) 237130320Smarius return (rv); 238130320Smarius 239130320Smarius if ((rv = device_delete_child(dev, sc->iicbus)) != 0) 240130320Smarius return (rv); 241130320Smarius 242130320Smarius if (sc->res_irq != 0) { 243130320Smarius BUS_TEARDOWN_INTR(device_get_parent(dev), dev, sc->res_irq, 244130320Smarius sc->intr_cookie); 245130320Smarius bus_deactivate_resource(dev, SYS_RES_IRQ, sc->rid_irq, 246130320Smarius sc->res_irq); 247130320Smarius bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq, 248130320Smarius sc->res_irq); 249130320Smarius } 250130320Smarius 251130320Smarius bus_deactivate_resource(dev, SYS_RES_IOPORT, sc->rid_ioport, 252130320Smarius sc->res_ioport); 253130320Smarius bus_release_resource(dev, SYS_RES_IOPORT, sc->rid_ioport, 254130320Smarius sc->res_ioport); 255130320Smarius 256130320Smarius return (0); 257130320Smarius} 258130320Smarius 259130320SmariusDRIVER_MODULE(pcf_ebus, ebus, pcf_ebus_driver, pcf_ebus_devclass, 0, 0); 260130320SmariusMODULE_DEPEND(pcf_ebus, iicbus, PCF_MINVER, PCF_PREFVER, PCF_MAXVER); 261130320SmariusMODULE_VERSION(pcf_ebus, PCF_MODVER); 262