cy_isa.c revision 129879
1/*- 2 * cyclades cyclom-y serial driver 3 * Andrew Herbert <andrew@werple.apana.org.au>, 17 August 1993 4 * 5 * Copyright (c) 1993 Andrew Herbert. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name Andrew Herbert may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED 20 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 22 * NO EVENT SHALL I BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 23 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 24 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 25 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 26 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 27 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31/* 32 * Cyclades Y ISA serial interface driver 33 */ 34 35#include <sys/cdefs.h> 36__FBSDID("$FreeBSD: head/sys/dev/cy/cy_isa.c 129879 2004-05-30 20:08:47Z phk $"); 37 38#include <sys/param.h> 39#include <sys/systm.h> 40#include <sys/bus.h> 41#include <sys/kernel.h> 42#include <sys/module.h> 43 44#include <machine/bus.h> 45#include <sys/rman.h> 46#include <machine/resource.h> 47 48#include <isa/isavar.h> 49 50#include <dev/cy/cyreg.h> 51#include <dev/cy/cyvar.h> 52 53static int cy_isa_attach(device_t dev); 54static int cy_isa_probe(device_t dev); 55 56static device_method_t cy_isa_methods[] = { 57 /* Device interface. */ 58 DEVMETHOD(device_probe, cy_isa_probe), 59 DEVMETHOD(device_attach, cy_isa_attach), 60 61 { 0, 0 } 62}; 63 64static driver_t cy_isa_driver = { 65 cy_driver_name, 66 cy_isa_methods, 67 0, 68}; 69 70DRIVER_MODULE(cy, isa, cy_isa_driver, cy_devclass, 0, 0); 71 72static int 73cy_isa_probe(device_t dev) 74{ 75 struct resource *mem_res; 76 cy_addr iobase; 77 int mem_rid; 78 79 if (isa_get_logicalid(dev) != 0) /* skip PnP probes */ 80 return (ENXIO); 81 82 mem_rid = 0; 83 mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &mem_rid, 84 0ul, ~0ul, 0ul, RF_ACTIVE); 85 if (mem_res == NULL) { 86 device_printf(dev, "ioport resource allocation failed\n"); 87 return (ENXIO); 88 } 89 iobase = rman_get_virtual(mem_res); 90 91 /* Cyclom-16Y hardware reset (Cyclom-8Ys don't care) */ 92 cy_inb(iobase, CY16_RESET, 0); /* XXX? */ 93 DELAY(500); /* wait for the board to get its act together */ 94 95 /* this is needed to get the board out of reset */ 96 cy_outb(iobase, CY_CLEAR_INTR, 0, 0); 97 DELAY(500); 98 99 bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res); 100 return (cy_units(iobase, 0) == 0 ? ENXIO : 0); 101} 102 103static int 104cy_isa_attach(device_t dev) 105{ 106 struct resource *irq_res, *mem_res; 107 void *irq_cookie, *vaddr, *vsc; 108 int irq_rid, mem_rid; 109 110 irq_res = NULL; 111 mem_res = NULL; 112 113 mem_rid = 0; 114 mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &mem_rid, 115 0ul, ~0ul, 0ul, RF_ACTIVE); 116 if (mem_res == NULL) { 117 device_printf(dev, "memory resource allocation failed\n"); 118 goto fail; 119 } 120 vaddr = rman_get_virtual(mem_res); 121 122 vsc = cyattach_common(vaddr, 0); 123 if (vsc == NULL) { 124 device_printf(dev, "no ports found!\n"); 125 goto fail; 126 } 127 128 irq_rid = 0; 129 irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &irq_rid, 0ul, ~0ul, 0ul, 130 RF_SHAREABLE | RF_ACTIVE); 131 if (irq_res == NULL) { 132 device_printf(dev, "interrupt resource allocation failed\n"); 133 goto fail; 134 } 135 if (bus_setup_intr(dev, irq_res, INTR_TYPE_TTY | INTR_FAST, cyintr, 136 vsc, &irq_cookie) != 0) { 137 device_printf(dev, "interrupt setup failed\n"); 138 goto fail; 139 } 140 141 return (0); 142 143fail: 144 if (irq_res != NULL) 145 bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res); 146 if (mem_res != NULL) 147 bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res); 148 return (ENXIO); 149} 150