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/*-
* cyclades cyclom-y serial driver
* Andrew Herbert <andrew@werple.apana.org.au>, 17 August 1993
*
* Copyright (c) 1993 Andrew Herbert.
* 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.
* 3. The name Andrew Herbert may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY ``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 I 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.
*/
/*
* Cyclades Y ISA serial interface driver
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <isa/isavar.h>
#include <dev/cy/cyreg.h>
#include <dev/cy/cyvar.h>
static int cy_isa_attach(device_t dev);
static int cy_isa_probe(device_t dev);
static device_method_t cy_isa_methods[] = {
/* Device interface. */
DEVMETHOD(device_probe, cy_isa_probe),
DEVMETHOD(device_attach, cy_isa_attach),
{ 0, 0 }
};
static driver_t cy_isa_driver = {
cy_driver_name,
cy_isa_methods,
0,
};
DRIVER_MODULE(cy, isa, cy_isa_driver, cy_devclass, 0, 0);
static int
cy_isa_probe(device_t dev)
{
struct resource *mem_res;
cy_addr iobase;
int mem_rid;
if (isa_get_logicalid(dev) != 0) /* skip PnP probes */
return (ENXIO);
mem_rid = 0;
mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &mem_rid,
0ul, ~0ul, 0ul, RF_ACTIVE);
if (mem_res == NULL) {
device_printf(dev, "ioport resource allocation failed\n");
return (ENXIO);
}
iobase = rman_get_virtual(mem_res);
/* Cyclom-16Y hardware reset (Cyclom-8Ys don't care) */
cy_inb(iobase, CY16_RESET, 0); /* XXX? */
DELAY(500); /* wait for the board to get its act together */
/* this is needed to get the board out of reset */
cy_outb(iobase, CY_CLEAR_INTR, 0, 0);
DELAY(500);
bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res);
return (cy_units(iobase, 0) == 0 ? ENXIO : 0);
}
static int
cy_isa_attach(device_t dev)
{
struct resource *irq_res, *mem_res;
void *irq_cookie, *vaddr, *vsc;
int irq_rid, mem_rid;
irq_res = NULL;
mem_res = NULL;
mem_rid = 0;
mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &mem_rid,
0ul, ~0ul, 0ul, RF_ACTIVE);
if (mem_res == NULL) {
device_printf(dev, "memory resource allocation failed\n");
goto fail;
}
vaddr = rman_get_virtual(mem_res);
vsc = cyattach_common(vaddr, 0);
if (vsc == NULL) {
device_printf(dev, "no ports found!\n");
goto fail;
}
irq_rid = 0;
irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &irq_rid, 0ul, ~0ul, 0ul,
RF_SHAREABLE | RF_ACTIVE);
if (irq_res == NULL) {
device_printf(dev, "interrupt resource allocation failed\n");
goto fail;
}
if (bus_setup_intr(dev, irq_res, INTR_TYPE_TTY | INTR_FAST, cyintr,
vsc, &irq_cookie) != 0) {
device_printf(dev, "interrupt setup failed\n");
goto fail;
}
return (0);
fail:
if (irq_res != NULL)
bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res);
if (mem_res != NULL)
bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res);
return (ENXIO);
}
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