1 /* $NetBSD: pccons_isa.c,v 1.12 2011/07/01 19:25:41 dyoung Exp $ */
2 /* NetBSD: vga_isa.c,v 1.4 2000/08/14 20:14:51 thorpej Exp */
3
4 /*
5 * Copyright (c) 1995, 1996 Carnegie-Mellon University.
6 * All rights reserved.
7 *
8 * Author: Chris G. Demetriou
9 *
10 * Permission to use, copy, modify and distribute this software and
11 * its documentation is hereby granted, provided that both the copyright
12 * notice and this permission notice appear in all copies of the
13 * software, derivative works or modified versions, and any portions
14 * thereof, and that both notices appear in supporting documentation.
15 *
16 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
17 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
18 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
19 *
20 * Carnegie Mellon requests users of this software to return to
21 *
22 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
23 * School of Computer Science
24 * Carnegie Mellon University
25 * Pittsburgh PA 15213-3890
26 *
27 * any improvements or extensions that they make and grant Carnegie the
28 * rights to redistribute these changes.
29 */
30
31 #include <sys/cdefs.h>
32 __KERNEL_RCSID(0, "$NetBSD: pccons_isa.c,v 1.12 2011/07/01 19:25:41 dyoung Exp $");
33
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/device.h>
37
38 #include <sys/bus.h>
39
40 #include <dev/isa/isavar.h>
41
42 #include <arc/dev/pcconsvar.h>
43 #include <arc/isa/pccons_isavar.h>
44
45 static int pccons_isa_match(device_t, cfdata_t, void *);
46 static void pccons_isa_attach(device_t, device_t, void *);
47
48 CFATTACH_DECL_NEW(pc_isa, sizeof(struct pc_softc),
49 pccons_isa_match, pccons_isa_attach, NULL, NULL);
50
51 struct pccons_config *pccons_isa_conf;
52
53 static int
pccons_isa_match(device_t parent,cfdata_t cf,void * aux)54 pccons_isa_match(device_t parent, cfdata_t cf, void *aux)
55 {
56 struct isa_attach_args *ia = aux;
57 bus_addr_t iobase = 0x3b0; /* XXX mono 0x3b0 color 0x3c0 */
58 bus_size_t iosize = 0x30; /* XXX 0x20 */
59 bus_addr_t maddr = 0xa0000;
60 bus_size_t msize = 0x20000;
61 int irq = 1;
62
63 if (ia->ia_nio < 1)
64 return 0;
65 if (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT)
66 iobase = ia->ia_io[0].ir_addr;
67 #if 0 /* XXX isa.c */
68 if (ia->ia_iosize != 0)
69 iosize = ia->ia_iosize;
70 #endif
71 if (ia->ia_niomem < 1)
72 return 0;
73 if (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM)
74 maddr = ia->ia_iomem[0].ir_addr;
75 if (ia->ia_iomem[0].ir_size != ISA_UNKNOWN_IOSIZ)
76 msize = ia->ia_iomem[0].ir_size;
77
78 if (ia->ia_nirq < 1)
79 return 0;
80 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ)
81 irq = ia->ia_irq[0].ir_irq;
82
83 #if 0
84 /* If values are hardwired to something that they can't be, punt. */
85 if (iobase != 0x3b0 || iosize != 0x30 ||
86 maddr != 0xa0000 || msize != 0x20000 ||
87 ia->ia_irq != 1 || ia->ia_drq != DRQUNK)
88 return 0;
89 #endif
90
91 if (pccons_isa_conf == NULL)
92 return 0;
93
94 if (!pccons_common_match(ia->ia_iot, ia->ia_memt, ia->ia_iot,
95 pccons_isa_conf))
96 return 0;
97
98 ia->ia_nio = 1;
99 ia->ia_io[0].ir_addr = iobase;
100 ia->ia_io[0].ir_size = iosize;
101
102 ia->ia_niomem = 1;
103 ia->ia_iomem[0].ir_addr = maddr;
104 ia->ia_iomem[0].ir_size = msize;
105
106 ia->ia_nirq = 1;
107 ia->ia_irq[0].ir_irq = irq;
108
109 ia->ia_ndrq = 0;
110
111 return 1;
112 }
113
114 static void
pccons_isa_attach(device_t parent,device_t self,void * aux)115 pccons_isa_attach(device_t parent, device_t self, void *aux)
116 {
117 struct pc_softc *sc = device_private(self);
118 struct isa_attach_args *ia = aux;
119
120 sc->sc_dev = self;
121
122 isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, IST_EDGE, IPL_TTY,
123 pcintr, sc);
124 pccons_common_attach(sc, ia->ia_iot, ia->ia_memt, ia->ia_iot,
125 pccons_isa_conf);
126 }
127
128 int
pccons_isa_cnattach(bus_space_tag_t iot,bus_space_tag_t memt)129 pccons_isa_cnattach(bus_space_tag_t iot, bus_space_tag_t memt)
130 {
131
132 if (pccons_isa_conf == NULL)
133 return ENXIO;
134
135 pccons_common_cnattach(iot, memt, iot, pccons_isa_conf);
136 return 0;
137 }
138