1 /* $OpenBSD: com_dino.c,v 1.4 2007/07/15 19:25:49 kettenis Exp $ */
2
3 /*
4 * Copyright (c) 2004 Michael Shalayeff
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 OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
25 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
26 * THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/device.h>
32 #include <sys/tty.h>
33
34 #include <sys/bus.h>
35 #include <machine/intr.h>
36 #include <machine/iomod.h>
37 #include <machine/autoconf.h>
38
39 #include <dev/ic/comreg.h>
40 #include <dev/ic/comvar.h>
41
42 #include <hppa/dev/cpudevs.h>
43 #include <hppa/hppa/machdep.h>
44
45 void *dino_intr_establish(void *sc, int irq, int pri,
46 int (*handler)(void *v), void *arg);
47
48 #define COM_DINO_FREQ 7272700
49
50 struct com_dino_softc {
51 struct com_softc sc_com; /* real "com" softc */
52 void *sc_ih; /* interrupt handler */
53 };
54
55 struct com_dino_regs {
56 uint8_t reset;
57 uint8_t pad0[3];
58 uint8_t test;
59 #define COM_DINO_PAR_LOOP 0x01
60 #define COM_DINO_CLK_SEL 0x02
61 uint8_t pad1[3];
62 uint32_t iodc;
63 uint8_t pad2[0x54];
64 uint8_t dither;
65 };
66
67 int com_dino_match(device_t, cfdata_t, void *);
68 void com_dino_attach(device_t, device_t, void *);
69
70 CFATTACH_DECL_NEW(com_dino, sizeof(struct com_dino_softc), com_dino_match,
71 com_dino_attach, NULL, NULL);
72
73 int
com_dino_match(device_t parent,cfdata_t match,void * aux)74 com_dino_match(device_t parent, cfdata_t match, void *aux)
75 {
76 struct confargs *ca = aux;
77
78 if (ca->ca_type.iodc_type != HPPA_TYPE_FIO ||
79 ca->ca_type.iodc_sv_model != HPPA_FIO_GRS232)
80 return 0;
81
82 return 1;
83 /* HOZER comprobe1(ca->ca_iot, ca->ca_hpa + IOMOD_DEVOFFSET); */
84 }
85
86 void
com_dino_attach(device_t parent,device_t self,void * aux)87 com_dino_attach(device_t parent, device_t self, void *aux)
88 {
89 void *sc_dino = device_private(parent);
90 struct com_dino_softc *sc_comdino = device_private(self);
91 struct com_softc *sc = &sc_comdino->sc_com;
92 struct confargs *ca = aux;
93 struct com_dino_regs *regs = (struct com_dino_regs *)ca->ca_hpa;
94 int pagezero_cookie;
95
96 bus_addr_t iobase;
97 bus_space_handle_t ioh;
98
99 sc->sc_dev = self;
100 iobase = (bus_addr_t)ca->ca_hpa + IOMOD_DEVOFFSET;
101 sc->sc_frequency = COM_DINO_FREQ;
102
103 /* Test if this is the console. Compare either HPA or device path. */
104 pagezero_cookie = hppa_pagezero_map();
105 if (PAGE0->mem_cons.pz_class == PCL_DUPLEX &&
106 PAGE0->mem_cons.pz_hpa == (struct iomod *)ca->ca_hpa) {
107
108 /*
109 * This port is the console. In this case we must call
110 * comcnattach() and later com_is_console() to initialize
111 * everything properly.
112 */
113
114 if (comcnattach(ca->ca_iot, iobase, B9600,
115 sc->sc_frequency, COM_TYPE_NORMAL,
116 (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8) != 0) {
117 aprint_error(": can't comcnattach\n");
118 hppa_pagezero_unmap(pagezero_cookie);
119 return;
120 }
121 }
122 hppa_pagezero_unmap(pagezero_cookie);
123
124 /*
125 * Get the already initialized console ioh via com_is_console() if
126 * this is the console or map the I/O space if this isn't the console.
127 */
128
129 if (!com_is_console(ca->ca_iot, iobase, &ioh) &&
130 bus_space_map(ca->ca_iot, iobase, COM_NPORTS, 0, &ioh) != 0) {
131 aprint_error(": can't map I/O space\n");
132 return;
133 }
134 com_init_regs(&sc->sc_regs, ca->ca_iot, ioh, iobase);
135
136 /* select clock freq */
137 regs->test = COM_DINO_CLK_SEL;
138
139 com_attach_subr(sc);
140
141 ca->ca_irq = 10;
142
143 sc_comdino->sc_ih = dino_intr_establish(sc_dino, ca->ca_irq, IPL_TTY,
144 comintr, sc);
145 }
146