1 /* $NetBSD: mca.c,v 1.34 2021/08/07 16:19:13 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
5 * Copyright (c) 1996-1999 Scott D. Telford.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Scott Telford <s.telford@ed.ac.uk>.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 /*
34 * MCA Bus device
35 */
36
37 #include <sys/cdefs.h>
38 __KERNEL_RCSID(0, "$NetBSD: mca.c,v 1.34 2021/08/07 16:19:13 thorpej Exp $");
39
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/device.h>
43
44 #include <sys/bus.h>
45 #include <machine/mca_machdep.h>
46
47 #include <dev/mca/mcareg.h>
48 #include <dev/mca/mcavar.h>
49 #include <dev/mca/mcadevs.h>
50
51 #include "locators.h"
52
53 int mca_match(device_t, cfdata_t, void *);
54 void mca_attach(device_t, device_t, void *);
55
56 CFATTACH_DECL_NEW(mca, 0,
57 mca_match, mca_attach, NULL, NULL);
58
59 int mca_print(void *, const char *);
60
61 int
mca_match(device_t parent,cfdata_t cf,void * aux)62 mca_match(device_t parent, cfdata_t cf, void *aux)
63 {
64 struct mcabus_attach_args *mba = aux;
65
66 /* sanity (only mca0 supported currently) */
67 if (mba->mba_bus < 0 || mba->mba_bus > 0)
68 return (0);
69
70 /* XXX check other indicators? */
71
72 return (1);
73 }
74
75 int
mca_print(void * aux,const char * pnp)76 mca_print(void *aux, const char *pnp)
77 {
78 register struct mca_attach_args *ma = aux;
79 char devinfo[256];
80
81 if (pnp) {
82 mca_devinfo(ma->ma_id, devinfo, sizeof(devinfo));
83 aprint_normal("%s slot %d: %s", pnp, ma->ma_slot + 1, devinfo);
84 }
85
86 /*
87 * Print "configured" for Memory Extension boards - there is no
88 * meaningfull driver for them, they "just work".
89 */
90 switch(ma->ma_id) {
91 case MCA_PRODUCT_HRAM: case MCA_PRODUCT_IQRAM: case MCA_PRODUCT_MICRAM:
92 case MCA_PRODUCT_ASTRAM: case MCA_PRODUCT_KINGRAM:
93 case MCA_PRODUCT_KINGRAM8: case MCA_PRODUCT_KINGRAM16:
94 case MCA_PRODUCT_KINGRAM609: case MCA_PRODUCT_HYPRAM:
95 case MCA_PRODUCT_QRAM1: case MCA_PRODUCT_QRAM2: case MCA_PRODUCT_EVERAM:
96 case MCA_PRODUCT_BOCARAM: case MCA_PRODUCT_IBMRAM1:
97 case MCA_PRODUCT_IBMRAM2: case MCA_PRODUCT_IBMRAM3:
98 case MCA_PRODUCT_IBMRAM4: case MCA_PRODUCT_IBMRAM5:
99 case MCA_PRODUCT_IBMRAM6: case MCA_PRODUCT_IBMRAM7:
100 aprint_normal(": memory configured\n");
101 return (QUIET);
102 default:
103 return (UNCONF);
104 }
105 }
106
107 void
mca_attach(device_t parent,device_t self,void * aux)108 mca_attach(device_t parent, device_t self, void *aux)
109 {
110 struct mcabus_attach_args *mba = aux;
111 bus_space_tag_t iot, memt;
112 bus_dma_tag_t dmat;
113 mca_chipset_tag_t mc;
114 int slot;
115
116 mca_attach_hook(parent, self, mba);
117 aprint_naive("\n");
118 aprint_normal("\n");
119
120 iot = mba->mba_iot;
121 memt = mba->mba_memt;
122 mc = mba->mba_mc;
123 dmat = mba->mba_dmat;
124
125 /*
126 * Search for and attach subdevices.
127 *
128 * NB: In the adapter setup register, slots are numbered from 0,
129 * but officially they are numbered from 1.
130 * We use the former convention internally and the latter for text
131 * messages and in config files.
132 */
133
134 for (slot = 0; slot < MCA_MAX_SLOTS; slot++) {
135 struct mca_attach_args ma;
136 int reg;
137 int locs[MCACF_NLOCS];
138
139 ma.ma_iot = iot;
140 ma.ma_memt = memt;
141 ma.ma_dmat = dmat;
142 ma.ma_mc = mc;
143 ma.ma_slot = slot;
144
145 for(reg = 0; reg < 8; reg++)
146 ma.ma_pos[reg]=mca_conf_read(mc, slot, reg);
147
148 ma.ma_id = ma.ma_pos[0] + (ma.ma_pos[1] << 8);
149 if (ma.ma_id == 0xffff) /* no adapter here */
150 continue;
151
152 locs[MCACF_SLOT] = slot;
153
154 if (ma.ma_pos[2] & MCA_POS2_ENABLE
155 || mca_match_disabled(ma.ma_id))
156 config_found(self, &ma, mca_print,
157 CFARGS(.submatch = config_stdsubmatch,
158 .locators = locs));
159 else {
160 mca_print(&ma, device_xname(self));
161 aprint_normal(" disabled\n");
162 }
163 }
164 }
165