Current Path : /sys/dev/cy/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/dev/cy/cy_isa.c |
/*- * 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: release/9.1.0/sys/dev/cy/cy_isa.c 166901 2007-02-23 12:19:07Z piso $"); #include <sys/param.h> #include <sys/systm.h> #include <sys/bus.h> #include <sys/kernel.h> #include <sys/module.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 error, 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); error = (cy_units(iobase, 0) == 0 ? ENXIO : 0); bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res); return (error); } 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, cyintr, NULL, 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); }