2e34ccc7fe
releasing it. This seems to have worked until a few days ago, but now the memory is unmapped.
151 lines
4.2 KiB
C
151 lines
4.2 KiB
C
/*-
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* cyclades cyclom-y serial driver
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* Andrew Herbert <andrew@werple.apana.org.au>, 17 August 1993
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*
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* Copyright (c) 1993 Andrew Herbert.
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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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* 3. The name Andrew Herbert may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL I BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Cyclades Y ISA serial interface driver
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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/kernel.h>
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#include <sys/module.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 <isa/isavar.h>
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#include <dev/cy/cyreg.h>
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#include <dev/cy/cyvar.h>
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static int cy_isa_attach(device_t dev);
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static int cy_isa_probe(device_t dev);
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static device_method_t cy_isa_methods[] = {
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/* Device interface. */
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DEVMETHOD(device_probe, cy_isa_probe),
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DEVMETHOD(device_attach, cy_isa_attach),
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{ 0, 0 }
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};
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static driver_t cy_isa_driver = {
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cy_driver_name,
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cy_isa_methods,
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0,
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};
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DRIVER_MODULE(cy, isa, cy_isa_driver, cy_devclass, 0, 0);
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static int
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cy_isa_probe(device_t dev)
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{
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struct resource *mem_res;
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cy_addr iobase;
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int error, mem_rid;
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if (isa_get_logicalid(dev) != 0) /* skip PnP probes */
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return (ENXIO);
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mem_rid = 0;
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mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &mem_rid,
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0ul, ~0ul, 0ul, RF_ACTIVE);
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if (mem_res == NULL) {
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device_printf(dev, "ioport resource allocation failed\n");
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return (ENXIO);
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}
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iobase = rman_get_virtual(mem_res);
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/* Cyclom-16Y hardware reset (Cyclom-8Ys don't care) */
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cy_inb(iobase, CY16_RESET, 0); /* XXX? */
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DELAY(500); /* wait for the board to get its act together */
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/* this is needed to get the board out of reset */
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cy_outb(iobase, CY_CLEAR_INTR, 0, 0);
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DELAY(500);
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error = (cy_units(iobase, 0) == 0 ? ENXIO : 0);
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bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res);
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return (error);
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}
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static int
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cy_isa_attach(device_t dev)
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{
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struct resource *irq_res, *mem_res;
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void *irq_cookie, *vaddr, *vsc;
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int irq_rid, mem_rid;
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irq_res = NULL;
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mem_res = NULL;
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mem_rid = 0;
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mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &mem_rid,
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0ul, ~0ul, 0ul, RF_ACTIVE);
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if (mem_res == NULL) {
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device_printf(dev, "memory resource allocation failed\n");
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goto fail;
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}
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vaddr = rman_get_virtual(mem_res);
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vsc = cyattach_common(vaddr, 0);
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if (vsc == NULL) {
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device_printf(dev, "no ports found!\n");
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goto fail;
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}
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irq_rid = 0;
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irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &irq_rid, 0ul, ~0ul, 0ul,
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RF_SHAREABLE | RF_ACTIVE);
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if (irq_res == NULL) {
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device_printf(dev, "interrupt resource allocation failed\n");
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goto fail;
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}
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if (bus_setup_intr(dev, irq_res, INTR_TYPE_TTY | INTR_FAST, cyintr,
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vsc, &irq_cookie) != 0) {
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device_printf(dev, "interrupt setup failed\n");
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goto fail;
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}
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return (0);
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fail:
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if (irq_res != NULL)
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bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res);
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if (mem_res != NULL)
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bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res);
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return (ENXIO);
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}
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