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26280d88d7
subset ("compatible", "device_type", "model" and "name") of the standard properties in drivers for devices on Open Firmware supported busses. The standard properties "reg", "interrupts" und "address" are not covered by this interface because they are only of interest in the respective bridge code. There's a remaining standard property "status" which is unclear how to support properly but which also isn't used in FreeBSD at present. This ofw_bus kobj-interface allows to replace the various (ebus_get_node(), ofw_pci_get_node(), etc.) and partially inconsistent (central_get_type() vs. sbus_get_device_type(), etc.) existing IVAR ones with a common one. This in turn allows to simplify and remove code-duplication in drivers for devices that can hang off of more than one OFW supported bus. - Convert the sparc64 Central, EBus, FHC, PCI and SBus bus drivers and the drivers for their children to use the ofw_bus kobj-interface. The IVAR- interfaces of the Central, EBus and FHC are entirely replaced by this. The PCI bus driver used its own kobj-interface and now also uses the ofw_bus one. The IVARs special to the SBus, e.g. for retrieving the burst size, remain. Beware: this causes an ABI-breakage for modules of drivers which used the IVAR-interfaces, i.e. esp(4), hme(4), isp(4) and uart(4), which need to be recompiled. The style-inconsistencies introduced in some of the bus drivers will be fixed by tmm@ in a generic clean-up of the respective drivers later (he requested to add the changes in the "new" style). - Convert the powerpc MacIO bus driver and the drivers for its children to use the ofw_bus kobj-interface. This invloves removing the IVARs related to the "reg" property which were unused and a leftover from the NetBSD origini of the code. There's no ABI-breakage caused by this because none of these driver are currently built as modules. There are other powerpc bus drivers which can be converted to the ofw_bus kobj-interface, e.g. the PCI bus driver, which should be done together with converting powerpc to use the OFW PCI code from sparc64. - Make the SBus and FHC front-end of zs(4) and the sparc64 eeprom(4) take advantage of the ofw_bus kobj-interface and simplify them a bit. Reviewed by: grehan, tmm Approved by: re (scottl) Discussed with: tmm Tested with: Sun AX1105, AXe, Ultra 2, Ultra 60; PPC cross-build on i386
198 lines
5.5 KiB
C
198 lines
5.5 KiB
C
/*-
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* Copyright (c) 2004 Joerg Wunsch
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*
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* derived from sys/i386/isa/pcf.c which is:
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*
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* Copyright (c) 1998 Nicolas Souchu, Marc Bouget
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Device specific driver for the SUNW,envctrl device found on some
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* UltraSPARC Sun systems. This device is a Philips PCF8584 sitting
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* on the Ebus2.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/resource.h>
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#include <sys/uio.h>
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#include <dev/ofw/ofw_bus.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <dev/iicbus/iiconf.h>
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#include <dev/pcf/pcfvar.h>
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#include "iicbus_if.h"
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#undef PCF_DEFAULT_ADDR
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#define PCF_DEFAULT_ADDR 0x55 /* SUNW,pcf default */
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static int envctrl_probe(device_t);
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static int envctrl_attach(device_t);
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static int envctrl_detach(device_t);
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static device_method_t envctrl_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, envctrl_probe),
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DEVMETHOD(device_attach, envctrl_attach),
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DEVMETHOD(device_detach, envctrl_detach),
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/* iicbus interface */
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DEVMETHOD(iicbus_callback, iicbus_null_callback),
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DEVMETHOD(iicbus_repeated_start, pcf_repeated_start),
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DEVMETHOD(iicbus_start, pcf_start),
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DEVMETHOD(iicbus_stop, pcf_stop),
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DEVMETHOD(iicbus_write, pcf_write),
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DEVMETHOD(iicbus_read, pcf_read),
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DEVMETHOD(iicbus_reset, pcf_rst_card),
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{ 0, 0 }
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};
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static devclass_t envctrl_devclass;
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static driver_t envctrl_driver = {
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"envctrl",
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envctrl_methods,
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sizeof(struct pcf_softc),
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};
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static int
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envctrl_probe(device_t dev)
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{
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if (strcmp("SUNW,envctrl", ofw_bus_get_name(dev)) == 0) {
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device_set_desc(dev, "EBus SUNW,envctrl");
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return (0);
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}
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return (ENXIO);
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}
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static int
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envctrl_attach(device_t dev)
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{
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struct pcf_softc *sc;
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int rv = ENXIO;
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sc = DEVTOSOFTC(dev);
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bzero(sc, sizeof(struct pcf_softc));
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/* IO port is mandatory */
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sc->res_ioport = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
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&sc->rid_ioport, RF_ACTIVE);
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if (sc->res_ioport == 0) {
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device_printf(dev, "cannot reserve I/O port range\n");
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goto error;
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}
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sc->bt_ioport = rman_get_bustag(sc->res_ioport);
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sc->bh_ioport = rman_get_bushandle(sc->res_ioport);
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sc->pcf_flags = device_get_flags(dev);
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if (!(sc->pcf_flags & IIC_POLLED)) {
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sc->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->rid_irq,
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RF_ACTIVE);
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if (sc->res_irq == 0) {
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device_printf(dev, "can't reserve irq, polled mode.\n");
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sc->pcf_flags |= IIC_POLLED;
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}
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}
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/* reset the chip */
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pcf_rst_card(dev, IIC_FASTEST, PCF_DEFAULT_ADDR, NULL);
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rv = BUS_SETUP_INTR(device_get_parent(dev), dev, sc->res_irq,
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INTR_TYPE_NET /* | INTR_ENTROPY */,
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pcf_intr, sc, &sc->intr_cookie);
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if (rv) {
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device_printf(dev, "could not setup IRQ\n");
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goto error;
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}
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if ((sc->iicbus = device_add_child(dev, "iicbus", -1)) == NULL)
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device_printf(dev, "could not allocate iicbus instance\n");
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/* probe and attach the iicbus */
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bus_generic_attach(dev);
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return (0);
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error:
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if (sc->res_irq != 0) {
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bus_deactivate_resource(dev, SYS_RES_IRQ, sc->rid_irq,
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sc->res_irq);
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bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq,
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sc->res_irq);
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}
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if (sc->res_ioport != 0) {
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bus_deactivate_resource(dev, SYS_RES_IOPORT, sc->rid_ioport,
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sc->res_ioport);
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bus_release_resource(dev, SYS_RES_IOPORT, sc->rid_ioport,
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sc->res_ioport);
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}
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return (rv);
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}
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static int
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envctrl_detach(device_t dev)
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{
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struct pcf_softc *sc;
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int rv;
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sc = DEVTOSOFTC(dev);
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if ((rv = bus_generic_detach(dev)) != 0)
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return (rv);
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if ((rv = device_delete_child(dev, sc->iicbus)) != 0)
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return (rv);
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if (sc->res_irq != 0) {
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BUS_TEARDOWN_INTR(device_get_parent(dev), dev, sc->res_irq,
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sc->intr_cookie);
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bus_deactivate_resource(dev, SYS_RES_IRQ, sc->rid_irq, sc->res_irq);
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bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq, sc->res_irq);
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}
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bus_deactivate_resource(dev, SYS_RES_IOPORT, sc->rid_ioport, sc->res_ioport);
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bus_release_resource(dev, SYS_RES_IOPORT, sc->rid_ioport, sc->res_ioport);
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return (0);
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}
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DRIVER_MODULE(envctrl, ebus, envctrl_driver, envctrl_devclass, 0, 0);
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MODULE_DEPEND(envctrl, iicbus, PCF_MINVER, PCF_PREFVER, PCF_MAXVER);
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MODULE_VERSION(envctrl, PCF_MODVER);
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