Annotation of sys/arch/hppa/dev/uturn.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: uturn.c,v 1.3 2005/04/07 00:21:51 mickey 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: /* TODO IOA programming */
30:
31: #include <sys/param.h>
32: #include <sys/systm.h>
33: #include <sys/device.h>
34: #include <sys/reboot.h>
35:
36: #include <machine/iomod.h>
37: #include <machine/autoconf.h>
38:
39: #include <hppa/dev/cpudevs.h>
40:
41: struct uturn_regs {
42: u_int64_t resv0[2];
43: u_int64_t status; /* 0x10: */
44: u_int64_t resv1[5];
45: u_int64_t debug; /* 0x40: */
46: };
47:
48: struct uturn_softc {
49: struct device sc_dv;
50:
51: struct uturn_regs volatile *sc_regs;
52: };
53:
54: int uturnmatch(struct device *, void *, void *);
55: void uturnattach(struct device *, struct device *, void *);
56:
57: struct cfattach uturn_ca = {
58: sizeof(struct uturn_softc), uturnmatch, uturnattach
59: };
60:
61: struct cfdriver uturn_cd = {
62: NULL, "uturn", DV_DULL
63: };
64:
65: int
66: uturnmatch(parent, cfdata, aux)
67: struct device *parent;
68: void *cfdata;
69: void *aux;
70: {
71: struct confargs *ca = aux;
72: /* struct cfdata *cf = cfdata; */
73:
74: /* there will be only one */
75: if (ca->ca_type.iodc_type != HPPA_TYPE_IOA ||
76: ca->ca_type.iodc_sv_model != HPPA_IOA_UTURN)
77: return 0;
78:
79: if (ca->ca_type.iodc_model == 0x58 &&
80: ca->ca_type.iodc_revision >= 0x20)
81: return 0;
82:
83: return 1;
84: }
85:
86: void
87: uturnattach(parent, self, aux)
88: struct device *parent;
89: struct device *self;
90: void *aux;
91: {
92: struct confargs *ca = aux, nca;
93: struct uturn_softc *sc = (struct uturn_softc *)self;
94: bus_space_handle_t ioh;
95:
96: if (bus_space_map(ca->ca_iot, ca->ca_hpa, IOMOD_HPASIZE, 0, &ioh)) {
97: printf(": can't map IO space\n");
98: return;
99: }
100: sc->sc_regs = (struct uturn_regs *)ca->ca_hpa;
101:
102: printf(": %s rev %d\n",
103: ca->ca_type.iodc_revision < 0x10? "U2" : "UTurn",
104: ca->ca_type.iodc_revision & 0xf);
105:
106: /* keep it real */
107: ((struct iomod *)ioh)->io_control = 0x80;
108:
109: nca = *ca; /* clone from us */
110: nca.ca_hpamask = HPPA_IOBEGIN;
111: pdc_scanbus(self, &nca, MAXMODBUS, 0);
112: }
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