1 /* $OpenBSD: tcasic.c,v 1.19 2022/03/13 08:04:13 mpi Exp $ */
2 /* $NetBSD: tcasic.c,v 1.36 2001/08/23 01:16:52 nisimura Exp $ */
3
4 /*
5 * Copyright (c) 1994, 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/param.h>
32 #include <sys/systm.h>
33 #include <sys/device.h>
34
35 #include <machine/autoconf.h>
36 #include <machine/rpb.h>
37 #include <machine/cpu.h>
38
39 #include <dev/tc/tcvar.h>
40 #include <alpha/tc/tc_conf.h>
41
42 /* Definition of the driver for autoconfig. */
43 int tcasicmatch(struct device *, void *, void *);
44 void tcasicattach(struct device *, struct device *, void *);
45 int tcasicactivate(struct device *, int);
46
47 const struct cfattach tcasic_ca = {
48 .ca_devsize = sizeof (struct device),
49 .ca_match = tcasicmatch,
50 .ca_attach = tcasicattach,
51 .ca_activate = tcasicactivate
52 };
53
54 struct cfdriver tcasic_cd = {
55 NULL, "tcasic", DV_DULL,
56 };
57
58
59 int tcasicprint(void *, const char *);
60
61 /* There can be only one. */
62 int tcasicfound;
63
64 int
tcasicmatch(parent,cfdata,aux)65 tcasicmatch(parent, cfdata, aux)
66 struct device *parent;
67 void *cfdata, *aux;
68 {
69 struct mainbus_attach_args *ma = aux;
70
71 /* Make sure that we're looking for a TurboChannel ASIC. */
72 if (strcmp(ma->ma_name, tcasic_cd.cd_name))
73 return (0);
74
75 if (tcasicfound)
76 return (0);
77
78 return (1);
79 }
80
81 void
tcasicattach(parent,self,aux)82 tcasicattach(parent, self, aux)
83 struct device *parent;
84 struct device *self;
85 void *aux;
86 {
87 struct tcbus_attach_args tba;
88 void (*intr_setup)(void);
89 void (*iointr)(void *, unsigned long);
90
91 printf("\n");
92 tcasicfound = 1;
93
94 switch (cputype) {
95 #ifdef DEC_3000_500
96 case ST_DEC_3000_500:
97
98 intr_setup = tc_3000_500_intr_setup;
99 iointr = tc_3000_500_iointr;
100
101 if ((hwrpb->rpb_type & SV_ST_MASK) == SV_ST_SANDPIPER)
102 tba.tba_speed = TC_SPEED_22_5_MHZ;
103 else
104 tba.tba_speed = TC_SPEED_25_MHZ;
105 tba.tba_nslots = tc_3000_500_nslots;
106 tba.tba_slots = tc_3000_500_slots;
107 if (hwrpb->rpb_variation & SV_GRAPHICS) {
108 tba.tba_nbuiltins = tc_3000_500_graphics_nbuiltins;
109 tba.tba_builtins = tc_3000_500_graphics_builtins;
110 } else {
111 tba.tba_nbuiltins = tc_3000_500_nographics_nbuiltins;
112 tba.tba_builtins = tc_3000_500_nographics_builtins;
113 }
114 tba.tba_intr_establish = tc_3000_500_intr_establish;
115 tba.tba_intr_disestablish = tc_3000_500_intr_disestablish;
116 tba.tba_get_dma_tag = tc_dma_get_tag_3000_500;
117
118 /* Do 3000/500-specific DMA setup now. */
119 tc_dma_init_3000_500(tc_3000_500_nslots);
120 break;
121 #endif /* DEC_3000_500 */
122
123 #ifdef DEC_3000_300
124 case ST_DEC_3000_300:
125
126 intr_setup = tc_3000_300_intr_setup;
127 iointr = tc_3000_300_iointr;
128
129 tba.tba_speed = TC_SPEED_12_5_MHZ;
130 tba.tba_nslots = tc_3000_300_nslots;
131 tba.tba_slots = tc_3000_300_slots;
132 tba.tba_nbuiltins = tc_3000_300_nbuiltins;
133 tba.tba_builtins = tc_3000_300_builtins;
134 tba.tba_intr_establish = tc_3000_300_intr_establish;
135 tba.tba_intr_disestablish = tc_3000_300_intr_disestablish;
136 tba.tba_get_dma_tag = tc_dma_get_tag_3000_300;
137 break;
138 #endif /* DEC_3000_300 */
139
140 default:
141 panic("tcasicattach: bad cputype");
142 }
143
144 tba.tba_busname = "tc";
145 tba.tba_memt = tc_bus_mem_init(NULL);
146
147 tc_dma_init();
148
149 (*intr_setup)();
150
151 /* They all come in at 0x800. */
152 scb_set(0x800, iointr, NULL);
153
154 config_found(self, &tba, tcasicprint);
155 }
156
157 int
tcasicactivate(struct device * self,int act)158 tcasicactivate(struct device *self, int act)
159 {
160 switch (cputype) {
161 #ifdef DEC_3000_500
162 case ST_DEC_3000_500:
163 return tc_3000_500_activate(self, act);
164 #endif
165 default:
166 return config_activate_children(self, act);
167 }
168 }
169
170 int
tcasicprint(aux,pnp)171 tcasicprint(aux, pnp)
172 void *aux;
173 const char *pnp;
174 {
175
176 /* only TCs can attach to tcasics; easy. */
177 if (pnp)
178 printf("tc at %s", pnp);
179 return (UNCONF);
180 }
181
182 int
tc_fb_cnattach(tcaddr)183 tc_fb_cnattach(tcaddr)
184 tc_addr_t tcaddr;
185 {
186 return (ENXIO);
187 }
188