1 /* $NetBSD: gvpio.c,v 1.22 2021/08/07 16:18:41 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 1997 Ignatios Souvatzis
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include <sys/cdefs.h>
29 __KERNEL_RCSID(0, "$NetBSD: gvpio.c,v 1.22 2021/08/07 16:18:41 thorpej Exp $");
30
31 /*
32 * GVP I/O Extender
33 */
34
35 #include <sys/types.h>
36
37 #include <sys/conf.h>
38 #include <sys/device.h>
39 #include <sys/systm.h>
40 #include <sys/param.h>
41 #include <sys/bus.h>
42
43 #include <machine/intr.h>
44
45 #include <amiga/include/cpu.h>
46
47 #include <amiga/amiga/device.h>
48 #include <amiga/amiga/drcustom.h>
49
50 #include <amiga/dev/supio.h>
51 #include <amiga/dev/zbusvar.h>
52 #include <amiga/dev/gvpbusvar.h>
53
54 struct gvpio_softc {
55 struct bus_space_tag sc_bst;
56 void *sc_cntr;
57 LIST_HEAD(, gvpcom_int_hdl) sc_comhdls;
58 struct isr sc_comisr;
59 };
60
61 int gvpiomatch(device_t, cfdata_t, void *);
62 void gvpioattach(device_t, device_t, void *);
63 int gvpioprint(void *, const char *);
64 int gvp_com_intr(void *);
65 void gvp_com_intr_establish(device_t, struct gvpcom_int_hdl *);
66
67 CFATTACH_DECL_NEW(gvpio, sizeof(struct gvpio_softc),
68 gvpiomatch, gvpioattach, NULL, NULL);
69
70 int
gvpiomatch(device_t parent,cfdata_t cf,void * aux)71 gvpiomatch(device_t parent, cfdata_t cf, void *aux)
72 {
73
74 struct gvpbus_args *gap;
75
76 gap = aux;
77
78 if (gap->flags & GVP_IO)
79 return (1);
80
81 return (0);
82 }
83
84 struct gvpio_devs {
85 char *name;
86 int off;
87 int arg;
88 int ipl;
89 } gvpiodevs[] = {
90 { "com", 0x0b0, 115200 * 16 * 4, 6 },
91 { "com", 0x130, 115200 * 16 * 4, 6 },
92 { "lpt", 0x1b0, 0, 2 },
93 { 0 }
94 };
95
96 void
gvpioattach(device_t parent,device_t self,void * aux)97 gvpioattach(device_t parent, device_t self, void *aux)
98 {
99 struct gvpio_softc *giosc;
100 struct gvpio_devs *giosd;
101 struct gvpbus_args *gap;
102 struct supio_attach_args supa;
103 volatile void *gbase;
104 #ifdef __m68k__
105 u_int16_t needpsl;
106 #endif
107
108 giosc = device_private(self);
109 gap = aux;
110
111 if (parent)
112 printf("\n");
113
114 gbase = gap->zargs.va;
115 giosc->sc_cntr = &gbase[0x41];
116 giosc->sc_bst.base = (u_long)gbase + 1;
117 giosc->sc_bst.absm = &amiga_bus_stride_2;
118 LIST_INIT(&giosc->sc_comhdls);
119 giosd = gvpiodevs;
120
121 supa.supio_iot = &giosc->sc_bst;
122
123 gbase[0x041] = 0;
124 gbase[0x161 + 1*2] = 0;
125 gbase[0x261 + 1*2] = 0;
126 gbase[0x361 + 2*2] = 0;
127 gbase[0x461] = 0xd0;
128
129 while (giosd->name) {
130 supa.supio_name = giosd->name;
131 supa.supio_iobase = giosd->off;
132 supa.supio_arg = giosd->arg;
133 supa.supio_ipl = giosd->ipl;
134 config_found(self, &supa, gvpioprint, CFARGS_NONE); /* XXX */
135 ++giosd;
136 }
137 if (giosc->sc_comhdls.lh_first) {
138 #ifdef __m68k__
139 /* XXX this should be really in the interrupt stuff */
140 needpsl = PSL_S|PSL_IPL6;
141 if (ipl2spl_table[IPL_SERIAL] < needpsl) {
142 printf("%s: raising ipl2spl_table[IPL_SERIAL] "
143 "from 0x%x to 0x%x\n",
144 device_xname(self), ipl2spl_table[IPL_SERIAL],
145 needpsl);
146 ipl2spl_table[IPL_SERIAL] = needpsl;
147 }
148 #endif
149 giosc->sc_comisr.isr_intr = gvp_com_intr;
150 giosc->sc_comisr.isr_arg = giosc;
151 giosc->sc_comisr.isr_ipl = 6;
152 add_isr(&giosc->sc_comisr);
153 }
154 gbase[0x041] = 0x08;
155 }
156
157 int
gvpioprint(void * aux,const char * pnp)158 gvpioprint(void *aux, const char *pnp)
159 {
160 struct supio_attach_args *supa;
161
162 supa = aux;
163
164 if (pnp == NULL)
165 return(QUIET);
166
167 aprint_normal("%s at %s port 0x%02x ipl %d",
168 supa->supio_name, pnp, supa->supio_iobase, supa->supio_ipl);
169
170 return(UNCONF);
171 }
172
173 void
gvp_com_intr_establish(device_t self,struct gvpcom_int_hdl * p)174 gvp_com_intr_establish(device_t self, struct gvpcom_int_hdl *p)
175 {
176 struct gvpio_softc *sc;
177
178 sc = device_private(self);
179 LIST_INSERT_HEAD(&sc->sc_comhdls, p, next);
180
181 }
182
183 int
gvp_com_intr(void * p)184 gvp_com_intr(void *p)
185 {
186 struct gvpio_softc *sc;
187 struct gvpcom_int_hdl *np;
188 volatile void *cntr;
189
190 sc = (struct gvpio_softc *)p;
191
192 cntr = sc->sc_cntr;
193
194 if (!(*cntr & 0x2))
195 return (0);
196
197 *cntr &= ~0xa;
198
199 for (np = sc->sc_comhdls.lh_first; np != NULL;
200 np = np->next.le_next) {
201
202 (*np->f)(np->p);
203 }
204 *cntr |= 0x8;
205
206 return (1);
207 }
208