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: stable/9/sys/dev/cy/cy_isa.c 166901 2007-02-23 12:19:07Z piso $");
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
53 static int cy_isa_attach(device_t dev);
54 static int cy_isa_probe(device_t dev);
55
56 static 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
64 static driver_t cy_isa_driver = {
65 cy_driver_name,
66 cy_isa_methods,
67 0,
68 };
69
70 DRIVER_MODULE(cy, isa, cy_isa_driver, cy_devclass, 0, 0);
71
72 static int
cy_isa_probe(device_t dev)73 cy_isa_probe(device_t dev)
74 {
75 struct resource *mem_res;
76 cy_addr iobase;
77 int error, 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 error = (cy_units(iobase, 0) == 0 ? ENXIO : 0);
100 bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res);
101 return (error);
102 }
103
104 static int
cy_isa_attach(device_t dev)105 cy_isa_attach(device_t dev)
106 {
107 struct resource *irq_res, *mem_res;
108 void *irq_cookie, *vaddr, *vsc;
109 int irq_rid, mem_rid;
110
111 irq_res = NULL;
112 mem_res = NULL;
113
114 mem_rid = 0;
115 mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &mem_rid,
116 0ul, ~0ul, 0ul, RF_ACTIVE);
117 if (mem_res == NULL) {
118 device_printf(dev, "memory resource allocation failed\n");
119 goto fail;
120 }
121 vaddr = rman_get_virtual(mem_res);
122
123 vsc = cyattach_common(vaddr, 0);
124 if (vsc == NULL) {
125 device_printf(dev, "no ports found!\n");
126 goto fail;
127 }
128
129 irq_rid = 0;
130 irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &irq_rid, 0ul, ~0ul, 0ul,
131 RF_SHAREABLE | RF_ACTIVE);
132 if (irq_res == NULL) {
133 device_printf(dev, "interrupt resource allocation failed\n");
134 goto fail;
135 }
136 if (bus_setup_intr(dev, irq_res, INTR_TYPE_TTY,
137 cyintr, NULL, vsc, &irq_cookie) != 0) {
138 device_printf(dev, "interrupt setup failed\n");
139 goto fail;
140 }
141
142 return (0);
143
144 fail:
145 if (irq_res != NULL)
146 bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res);
147 if (mem_res != NULL)
148 bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res);
149 return (ENXIO);
150 }
151