diff options
Diffstat (limited to 'sys/dev/pcf/pcf_ebus.c')
| -rw-r--r-- | sys/dev/pcf/pcf_ebus.c | 256 |
1 files changed, 0 insertions, 256 deletions
diff --git a/sys/dev/pcf/pcf_ebus.c b/sys/dev/pcf/pcf_ebus.c deleted file mode 100644 index 3fa0be6b26cc..000000000000 --- a/sys/dev/pcf/pcf_ebus.c +++ /dev/null @@ -1,256 +0,0 @@ -/*- - * SPDX-License-Identifier: BSD-2-Clause-FreeBSD - * - * Copyright (c) 2004 Marius Strobl, Joerg Wunsch - * - * derived from sys/i386/isa/pcf.c which is: - * - * Copyright (c) 1998 Nicolas Souchu, Marc Bouget - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -/* - * Device specific driver for the EBus i2c devices found on some sun4u - * systems. On systems not having a boot-bus controller the i2c devices - * are PCF8584. - * - * Known onboard slave devices on the primary bus are: - * - * AXe: - * 0x40 PCF8574 I/O fan status (CPU fans 1+2) - * 0x9e PCF8591 A/D temperature (CPU + hotspot) - * - * AXmp: - * 0x70 PCF8574 I/O fan status (fans 1-4) - * 0x78 PCF8574 I/O fan fail interrupt - * 0x9a PCF8591 A/D voltage (CPU core) - * 0x9c PCF8591 A/D temperature (hotspots 1+2, aux. analog 1+2) - * 0x9e PCF8591 A/D temperature (CPUs 1-4) - * - * CP1400: - * 0x70 PCF8574 I/O reserved for factory use - * 0x9e PCF8591 A/D temperature (CPU) - * - * CP1500: - * 0x70 PCF8574 I/O reserved for factory use - * 0x72 PCF8574 I/O geographic address + power supply status lines - * 0x9e PCF8591 A/D temperature (CPU) - * 0xa0 AT24C01A hostid - * - * For AXmp, CP1400 and CP1500 these are described in more detail in: - * http://www.sun.com/oem/products/manuals/805-7581-04.pdf - * - */ - -#include <sys/param.h> -#include <sys/bus.h> -#include <sys/lock.h> -#include <sys/kernel.h> -#include <sys/module.h> -#include <sys/mutex.h> -#include <sys/resource.h> -#include <sys/systm.h> - -#include <dev/ofw/ofw_bus.h> -#include <dev/ofw/openfirm.h> - -#include <machine/bus.h> -#include <machine/resource.h> - -#include <sys/rman.h> - -#include <dev/iicbus/iiconf.h> -#include <dev/pcf/pcfvar.h> -#include "iicbus_if.h" - -#define PCF_NAME "pcf" - -static int pcf_ebus_probe(device_t); -static int pcf_ebus_attach(device_t); -static int pcf_ebus_detach(device_t); - -static device_method_t pcf_ebus_methods[] = { - /* device interface */ - DEVMETHOD(device_probe, pcf_ebus_probe), - DEVMETHOD(device_attach, pcf_ebus_attach), - DEVMETHOD(device_detach, pcf_ebus_detach), - - /* iicbus interface */ - DEVMETHOD(iicbus_callback, iicbus_null_callback), - DEVMETHOD(iicbus_repeated_start, pcf_repeated_start), - DEVMETHOD(iicbus_start, pcf_start), - DEVMETHOD(iicbus_stop, pcf_stop), - DEVMETHOD(iicbus_write, pcf_write), - DEVMETHOD(iicbus_read, pcf_read), - DEVMETHOD(iicbus_reset, pcf_rst_card), - { 0, 0 } -}; - -static devclass_t pcf_ebus_devclass; - -static driver_t pcf_ebus_driver = { - PCF_NAME, - pcf_ebus_methods, - sizeof(struct pcf_softc), -}; - -static int -pcf_ebus_probe(device_t dev) -{ - const char *compat; - - /* - * We must not attach to this i2c device if this is a system with - * a boot-bus controller. Additionally testing the compatibility - * property will hopefully take care of this. - */ - if (strcmp("i2c", ofw_bus_get_name(dev)) == 0) { - compat = ofw_bus_get_compat(dev); - if (compat != NULL && strcmp("i2cpcf,8584", compat) == 0) { - device_set_desc(dev, "PCF8584 I2C bus controller"); - return (0); - } - } - return (ENXIO); -} - -static int -pcf_ebus_attach(device_t dev) -{ - struct pcf_softc *sc; - int rv = ENXIO; - phandle_t node; - uint64_t own_addr; - - sc = DEVTOSOFTC(dev); - mtx_init(&sc->pcf_lock, device_get_nameunit(dev), "pcf", MTX_DEF); - - /* get OFW node of the pcf */ - if ((node = ofw_bus_get_node(dev)) == -1) { - device_printf(dev, "cannot get OFW node\n"); - goto error; - } - - /* IO port is mandatory */ - sc->res_ioport = bus_alloc_resource_any(dev, SYS_RES_MEMORY, - &sc->rid_ioport, RF_ACTIVE); - if (sc->res_ioport == 0) { - device_printf(dev, "cannot reserve I/O port range\n"); - goto error; - } - - sc->pcf_flags = device_get_flags(dev); - - /* - * XXX use poll-mode property? - */ - if (!(sc->pcf_flags & IIC_POLLED)) { - sc->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, - &sc->rid_irq, RF_ACTIVE); - if (sc->res_irq == 0) { - device_printf(dev, "can't reserve irq, polled mode.\n"); - sc->pcf_flags |= IIC_POLLED; - } - } - - /* - * XXX on AXmp there's probably a second IRQ which is the fan fail - * interrupt genererated by the PCF8574 at 0x78. - */ - - /* get address of the pcf */ - if (OF_getprop(node, "own-address", &own_addr, sizeof(own_addr)) == - -1) { - device_printf(dev, "cannot get own address\n"); - goto error; - } - if (bootverbose) - device_printf(dev, "PCF8584 address: 0x%08llx\n", (unsigned - long long)own_addr); - - /* reset the chip */ - pcf_rst_card(dev, IIC_FASTEST, own_addr, NULL); - - if (sc->res_irq) { - rv = bus_setup_intr(dev, sc->res_irq, - INTR_TYPE_NET /* | INTR_ENTROPY */, NULL, pcf_intr, sc, - &sc->intr_cookie); - if (rv) { - device_printf(dev, "could not setup IRQ\n"); - goto error; - } - } - - if ((sc->iicbus = device_add_child(dev, "iicbus", -1)) == NULL) - device_printf(dev, "could not allocate iicbus instance\n"); - - /* probe and attach the iicbus */ - bus_generic_attach(dev); - - return (0); - -error: - if (sc->res_irq != 0) { - bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq, - sc->res_irq); - } - if (sc->res_ioport != 0) { - bus_release_resource(dev, SYS_RES_MEMORY, sc->rid_ioport, - sc->res_ioport); - } - mtx_destroy(&sc->pcf_lock); - return (rv); -} - -static int -pcf_ebus_detach(device_t dev) -{ - struct pcf_softc *sc; - int rv; - - sc = DEVTOSOFTC(dev); - - if ((rv = bus_generic_detach(dev)) != 0) - return (rv); - - if ((rv = device_delete_child(dev, sc->iicbus)) != 0) - return (rv); - - if (sc->res_irq != 0) { - bus_teardown_intr(dev, sc->res_irq, - sc->intr_cookie); - bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq, - sc->res_irq); - } - - bus_release_resource(dev, SYS_RES_MEMORY, sc->rid_ioport, - sc->res_ioport); - mtx_destroy(&sc->pcf_lock); - - return (0); -} - -DRIVER_MODULE(pcf_ebus, ebus, pcf_ebus_driver, pcf_ebus_devclass, 0, 0); |