FreeBSD/Linux Kernel Cross Reference
sys/dev/aic/aic_isa.c
1 /*-
2 * Copyright (c) 1999 Luoqi Chen.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/kernel.h>
32 #include <sys/module.h>
33 #include <sys/bus.h>
34
35 #include <machine/bus_pio.h>
36 #include <machine/bus.h>
37
38 #include <i386/isa/isa_device.h>
39 #include <dev/aic/aic6360reg.h>
40 #include <dev/aic/aicvar.h>
41
42 static int aic_isa_probe __P((struct isa_device *dev));
43 static int aic_isa_attach __P((struct isa_device *dev));
44 static void aic_isa_intr __P((void *arg));
45
46 static u_int aic_isa_ports[] = { 0x340, 0x140 };
47 #define AIC_ISA_NUMPORTS (sizeof(aic_isa_ports) / sizeof(aic_isa_ports[0]))
48 #define AIC_ISA_PORTSIZE 0x20
49
50 static int
51 aic_isa_probe(struct isa_device *dev)
52 {
53 struct aic_softc _aic, *aic = &_aic;
54 int numports, i;
55 u_int port, *ports;
56 u_int8_t porta;
57
58 port = dev->id_iobase;
59 if (port != -1) {
60 ports = &port;
61 numports = 1;
62 } else {
63 ports = aic_isa_ports;
64 numports = AIC_ISA_NUMPORTS;
65 }
66
67 for (i = 0; i < numports; i++) {
68 aic->unit = aic_unit;
69 aic->tag = I386_BUS_SPACE_IO;
70 aic->bsh = ports[i];
71 if (!aic_probe(aic))
72 break;
73 }
74
75 if (i == numports)
76 return (0);
77
78 porta = aic_inb(aic, PORTA);
79 if (dev->id_irq <= 0)
80 dev->id_irq = 1 << PORTA_IRQ(porta);
81 if ((aic->flags & AIC_DMA_ENABLE) && dev->id_drq == -1)
82 dev->id_drq = PORTA_DRQ(porta);
83 dev->id_iobase = aic->bsh;
84 dev->id_intr = aic_isa_intr;
85 dev->id_unit = aic_unit++;
86 return (AIC_ISA_PORTSIZE);
87 }
88
89 static int
90 aic_isa_attach(struct isa_device *dev)
91 {
92 struct aic_softc *aic = &aic_softcs[dev->id_unit];
93
94 aic->unit = dev->id_unit;
95 aic->tag = I386_BUS_SPACE_IO;
96 aic->bsh = dev->id_iobase;
97
98 return (aic_attach(aic) == 0);
99 }
100
101 static void
102 aic_isa_intr(void *arg)
103 {
104 aic_intr((void *)&aic_softcs[(int)arg]);
105 }
106
107 struct isa_driver aicdriver = {
108 aic_isa_probe,
109 aic_isa_attach,
110 "aic"
111 };
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