dc7d0dea12
o Introduce PUC_PORT_TYPE_UART so that we can attach to uart(4), o Introduce port sub-types (eg PUC_PORT_UART_NS8250, PUC_PORT_UART_Z8530) to handle different hardware and determine resource sizes. o Introduce two new IVARs: PUC_IVAR_SUBTYPE and PUC_IVAR_REGSHFT. Both are used by uart(4) to get sufficient information to talk to the HW. o Introduce PUC_FLAGS_ALTRES to tell puc(4) to try memory mapped I/O if I/O port space cannot be allocated, or vice versa. o Have ports of type PUC_PORT_TYPE_COM attach to uart(1) if attaching to sio(4) fails (due to not having the sio driver). o Put struct puc_device_description in struct puc_softc instead of having a pointer to a device description in the softc. This allows us to create device descriptions on the fly without having to use malloc() or otherwise have them staticly defined. o Move puc_find_description() from puc.c to puc_pci.c as it's specific to PCI. o Add EBUS and SBUS frontends for use on sparc64. Note that the P in puc stands for PCI, so we kinda mess things up here. It's too soon to worry about it though. We'll know what to do about it in time. NOTE: This commit changes the behaviour of puc(4) to not quieten the device probe and attach for child devices. The uart(4) driver provides additional device description that is valuable to have.
102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
/*
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* Copyright (c) 2003 Marcel Moolenaar
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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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*
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_puc.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <dev/ofw/openfirm.h>
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#include <sparc64/sbus/sbusvar.h>
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#define PUC_ENTRAILS 1
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#include <dev/puc/pucvar.h>
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static int
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puc_sbus_probe(device_t dev)
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{
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const char *nm;
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nm = sbus_get_name(dev);
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if (!strcmp(nm, "zs")) {
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device_set_desc(dev, "Zilog Z8530 dual channel SCC");
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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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puc_sbus_attach(device_t dev)
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{
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struct puc_device_description dd;
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int i;
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bzero(&dd, sizeof(dd));
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dd.name = device_get_desc(dev);
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for (i = 0; i < 2; i++) {
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dd.ports[i].type = PUC_PORT_TYPE_UART | PUC_PORT_UART_Z8530;
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dd.ports[i].bar = 0;
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dd.ports[i].offset = 4 * i;
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dd.ports[i].serialfreq = 0;
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dd.ports[i].flags = PUC_FLAGS_MEMORY;
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dd.ports[i].regshft = 1;
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}
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return (puc_attach(dev, &dd));
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}
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static device_method_t puc_sbus_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, puc_sbus_probe),
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DEVMETHOD(device_attach, puc_sbus_attach),
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DEVMETHOD(bus_alloc_resource, puc_alloc_resource),
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DEVMETHOD(bus_release_resource, puc_release_resource),
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DEVMETHOD(bus_get_resource, puc_get_resource),
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DEVMETHOD(bus_read_ivar, puc_read_ivar),
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DEVMETHOD(bus_setup_intr, puc_setup_intr),
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DEVMETHOD(bus_teardown_intr, puc_teardown_intr),
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(bus_driver_added, bus_generic_driver_added),
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{ 0, 0 }
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};
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static driver_t puc_sbus_driver = {
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"puc",
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puc_sbus_methods,
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sizeof(struct puc_softc),
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};
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DRIVER_MODULE(puc, sbus, puc_sbus_driver, puc_devclass, 0, 0);
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