1 /* $NetBSD: isa_machdep.c,v 1.43 2021/08/07 16:18:46 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 1997 Leo Weppelman. All rights reserved.
5 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
6 * Copyright (c) 1994 Charles M. Hannum. 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. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Charles M. Hannum.
19 * 4. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #include <sys/cdefs.h>
35 __KERNEL_RCSID(0, "$NetBSD: isa_machdep.c,v 1.43 2021/08/07 16:18:46 thorpej Exp $");
36
37 #include <sys/types.h>
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/device.h>
41
42 #define _ATARI_BUS_DMA_PRIVATE
43 #include <sys/bus.h>
44 #include <dev/isa/isavar.h>
45 #include <dev/isa/isareg.h>
46
47 #include "pckbc.h"
48 #if (NPCKBC > 0)
49 #include <dev/ic/pckbcvar.h>
50 #include <dev/ic/i8042reg.h>
51 #endif /* NPCKBC > 0 */
52
53 #include <machine/iomap.h>
54 #include <machine/mfp.h>
55 #include <atari/atari/device.h>
56
57 #include "isadma.h"
58
59 #if NISADMA == 0
60
61 /*
62 * Entry points for ISA DMA while no DMA capable devices are attached.
63 * This must be a serious error. Cause a panic...
64 */
65 struct atari_bus_dma_tag isa_bus_dma_tag = {
66 0
67 };
68 #endif /* NISADMA == 0 */
69
70 static int atariisabusprint(void *, const char *);
71 static int isabusmatch(device_t, cfdata_t, void *);
72 static void isabusattach(device_t, device_t, void *);
73
74 struct isabus_softc {
75 device_t sc_dev;
76 struct atari_isa_chipset sc_chipset;
77 };
78
79 CFATTACH_DECL_NEW(isab, sizeof(struct isabus_softc),
80 isabusmatch, isabusattach, NULL, NULL);
81
82 /*
83 * We need some static storage to attach a console keyboard on the Milan
84 * during early console init.
85 */
86 static struct atari_bus_space bs_storage[2]; /* 1 iot, 1 memt */
87
88 int
isabusmatch(device_t parent,cfdata_t cf,void * aux)89 isabusmatch(device_t parent, cfdata_t cf, void *aux)
90 {
91 static int nmatched = 0;
92
93 if (strcmp((char *)aux, "isab"))
94 return 0; /* Wrong number... */
95
96 if (atari_realconfig == 0)
97 return 1;
98
99 if (machineid & (ATARI_HADES|ATARI_MILAN)) {
100 /*
101 * The Hades and Milan have only one pci bus
102 */
103 if (nmatched)
104 return 0;
105 nmatched++;
106 return 1;
107 }
108 return 0;
109 }
110
111 void
isabusattach(device_t parent,device_t self,void * aux)112 isabusattach(device_t parent, device_t self, void *aux)
113 {
114 struct isabus_softc *sc;
115 struct isabus_attach_args iba;
116 extern struct atari_bus_dma_tag isa_bus_dma_tag;
117 extern void isa_bus_init(void);
118
119 iba.iba_dmat = &isa_bus_dma_tag;
120 iba.iba_iot = leb_alloc_bus_space_tag(&bs_storage[0]);
121 iba.iba_memt = leb_alloc_bus_space_tag(&bs_storage[1]);
122 if ((iba.iba_iot == NULL) || (iba.iba_memt == NULL)) {
123 printf("leb_alloc_bus_space_tag failed!\n");
124 return;
125 }
126 iba.iba_iot->base = ISA_IOSTART;
127 iba.iba_memt->base = ISA_MEMSTART;
128
129 if (machineid & ATARI_HADES)
130 MFP->mf_aer |= (IO_ISA1|IO_ISA2); /* ISA interrupts: LOW->HIGH */
131 isa_bus_init();
132 if (self == NULL) { /* Early init */
133 #if (NPCKBC > 0)
134 pckbc_cnattach(iba.iba_iot, IO_KBD, KBCMDP, PCKBC_KBD_SLOT, 0);
135 #endif
136 return;
137 }
138
139 sc = device_private(self);
140 sc->sc_dev = self;
141 iba.iba_ic = &sc->sc_chipset;
142
143 printf("\n");
144 config_found(self, &iba, atariisabusprint, CFARGS_NONE);
145 }
146
147 int
atariisabusprint(void * aux,const char * name)148 atariisabusprint(void *aux, const char *name)
149 {
150
151 if (name == NULL)
152 return UNCONF;
153 return QUIET;
154 }
155
156 void
isa_attach_hook(device_t parent,device_t self,struct isabus_attach_args * iba)157 isa_attach_hook(device_t parent, device_t self, struct isabus_attach_args *iba)
158 {
159 }
160
161 void
isa_detach_hook(isa_chipset_tag_t ic,device_t self)162 isa_detach_hook(isa_chipset_tag_t ic, device_t self)
163 {
164 }
165
166 const struct evcnt *
isa_intr_evcnt(isa_chipset_tag_t ic,int irq)167 isa_intr_evcnt(isa_chipset_tag_t ic, int irq)
168 {
169
170 /* XXX for now, no evcnt parent reported */
171 return NULL;
172 }
173