1 /* $OpenBSD: stp_sbus.c,v 1.13 2022/10/16 01:22:39 jsg Exp $ */
2 /* $NetBSD: stp4020.c,v 1.23 2002/06/01 23:51:03 lukem Exp $ */
3
4 /*-
5 * Copyright (c) 1998 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Paul Kranenburg.
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 * STP4020: SBus/PCMCIA bridge supporting one Type-3 PCMCIA card, or up to
35 * two Type-1 and Type-2 PCMCIA cards..
36 */
37
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/errno.h>
41 #include <sys/malloc.h>
42 #include <sys/extent.h>
43 #include <sys/proc.h>
44 #include <sys/kernel.h>
45 #include <sys/device.h>
46
47 #include <dev/pcmcia/pcmciareg.h>
48 #include <dev/pcmcia/pcmciavar.h>
49 #include <dev/pcmcia/pcmciachip.h>
50
51 #include <machine/bus.h>
52 #include <machine/intr.h>
53
54 #include <dev/sbus/sbusvar.h>
55 #include <dev/sbus/stp4020reg.h>
56 #include <dev/sbus/stp4020var.h>
57
58 struct stp4020_sbus_softc {
59 struct stp4020_softc stp;
60 struct sparc_bus_space_tag *sc_bustag_le;
61 };
62
63 int stpmatch(struct device *, void *, void *);
64 void stpattach(struct device *, struct device *, void *);
65
66 const struct cfattach stp_sbus_ca = {
67 sizeof(struct stp4020_sbus_softc), stpmatch, stpattach
68 };
69
70 int
stpmatch(struct device * parent,void * match,void * aux)71 stpmatch(struct device *parent, void *match, void *aux)
72 {
73 struct sbus_attach_args *sa = aux;
74
75 return (strcmp("SUNW,pcmcia", sa->sa_name) == 0);
76 }
77
78 /*
79 * Attach all the sub-devices we can find
80 */
81 void
stpattach(struct device * parent,struct device * self,void * aux)82 stpattach(struct device *parent, struct device *self, void *aux)
83 {
84 struct sbus_attach_args *sa = aux;
85 struct stp4020_sbus_softc *ssc = (void *)self;
86 struct stp4020_softc *sc = (void *)self;
87 int node;
88 int i;
89 bus_space_tag_t bt;
90 bus_space_handle_t bh;
91
92 node = sa->sa_node;
93
94 /* Allocate little-endian bus tag */
95 ssc->sc_bustag_le = malloc(sizeof(*sa->sa_bustag), M_DEVBUF, M_NOWAIT);
96 if (ssc->sc_bustag_le == NULL)
97 panic("could not allocate stp bus tag");
98 *ssc->sc_bustag_le = *sa->sa_bustag;
99 ssc->sc_bustag_le->asi = ASI_PRIMARY_LITTLE;
100
101 /* Transfer bus tags */
102 sc->sc_bustag = sa->sa_bustag;
103
104 /* Set up per-socket static initialization */
105 sc->sc_socks[0].sc = sc->sc_socks[1].sc = sc;
106 sc->sc_socks[0].tag = sc->sc_socks[1].tag = sa->sa_bustag;
107
108 if (sa->sa_nreg < 8) {
109 printf(": only %d register sets\n", sa->sa_nreg);
110 return;
111 }
112
113 if (sa->sa_nintr != 2) {
114 printf(": expect 2 interrupt SBus levels; got %d\n",
115 sa->sa_nintr);
116 return;
117 }
118
119 #define STP4020_BANK_PROM 0
120 #define STP4020_BANK_CTRL 4
121 for (i = 0; i < 8; i++) {
122
123 /*
124 * STP4020 Register address map:
125 * bank 0: Forth PROM
126 * banks 1-3: socket 0, windows 0-2
127 * bank 4: control registers
128 * banks 5-7: socket 1, windows 0-2
129 */
130
131 if (i == STP4020_BANK_PROM)
132 /* Skip the PROM */
133 continue;
134
135 if (i == STP4020_BANK_CTRL)
136 bt = sc->sc_bustag;
137 else
138 bt = ssc->sc_bustag_le;
139
140 if (sbus_bus_map(bt, sa->sa_reg[i].sbr_slot,
141 sa->sa_reg[i].sbr_offset, sa->sa_reg[i].sbr_size, 0, 0,
142 &bh) != 0) {
143 printf(": attach: cannot map registers\n");
144 return;
145 }
146
147 if (i == STP4020_BANK_CTRL) {
148 /*
149 * Copy tag and handle to both socket structures
150 * for easy access in control/status IO functions.
151 */
152 sc->sc_socks[0].regs = sc->sc_socks[1].regs = bh;
153 } else if (i < STP4020_BANK_CTRL) {
154 /* banks 1-3 */
155 sc->sc_socks[0].windows[i-1].winaddr = bh;
156 sc->sc_socks[0].wintag = bt;
157 } else {
158 /* banks 5-7 */
159 sc->sc_socks[1].windows[i-5].winaddr = bh;
160 sc->sc_socks[1].wintag = bt;
161 }
162 }
163
164 /*
165 * We get to use two SBus interrupt levels.
166 * The higher level we use for status change interrupts;
167 * the lower level for PC card I/O.
168 */
169 bus_intr_establish(sa->sa_bustag, sa->sa_intr[1].sbi_pri,
170 IPL_NONE, 0, stp4020_statintr, sc, self->dv_xname);
171
172 bus_intr_establish(sa->sa_bustag, sa->sa_intr[0].sbi_pri,
173 IPL_NONE, 0, stp4020_iointr, sc, self->dv_xname);
174
175 stpattach_common(sc, sa->sa_frequency);
176 }
177