Annotation of sys/dev/isa/pckbc_isa.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: pckbc_isa.c,v 1.4 2004/04/02 04:39:51 deraadt Exp $ */
2: /* $NetBSD: pckbc_isa.c,v 1.2 2000/03/23 07:01:35 thorpej Exp $ */
3:
4: /*
5: * Copyright (c) 1998
6: * Matthias Drochner. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27: */
28:
29: #include <sys/param.h>
30: #include <sys/systm.h>
31: #include <sys/kernel.h>
32: #include <sys/proc.h>
33: #include <sys/device.h>
34: #include <sys/malloc.h>
35: #include <sys/errno.h>
36: #include <sys/queue.h>
37: #include <sys/lock.h>
38:
39: #include <machine/bus.h>
40:
41: #include <dev/isa/isareg.h>
42: #include <dev/isa/isavar.h>
43:
44: #include <dev/ic/i8042reg.h>
45: #include <dev/ic/pckbcvar.h>
46:
47: int pckbc_isa_match(struct device *, void *, void *);
48: void pckbc_isa_attach(struct device *, struct device *, void *);
49:
50: struct pckbc_isa_softc {
51: struct pckbc_softc sc_pckbc;
52:
53: isa_chipset_tag_t sc_ic;
54: int sc_irq[PCKBC_NSLOTS];
55: };
56:
57: struct cfattach pckbc_isa_ca = {
58: sizeof(struct pckbc_isa_softc), pckbc_isa_match, pckbc_isa_attach,
59: };
60:
61: void pckbc_isa_intr_establish(struct pckbc_softc *, pckbc_slot_t);
62:
63: int
64: pckbc_isa_match(parent, match, aux)
65: struct device *parent;
66: void *match;
67: void *aux;
68: {
69: struct isa_attach_args *ia = aux;
70: bus_space_tag_t iot = ia->ia_iot;
71: bus_space_handle_t ioh_d, ioh_c;
72: int res, ok = 1;
73:
74: /* If values are hardwired to something that they can't be, punt. */
75: if ((ia->ia_iobase != IOBASEUNK && ia->ia_iobase != IO_KBD) ||
76: ia->ia_maddr != MADDRUNK ||
77: (ia->ia_irq != IRQUNK && ia->ia_irq != 1 /* XXX */) ||
78: ia->ia_drq != DRQUNK)
79: return (0);
80:
81: if (pckbc_is_console(iot, IO_KBD) == 0) {
82: if (bus_space_map(iot, IO_KBD + KBDATAP, 1, 0, &ioh_d))
83: return (0);
84: if (bus_space_map(iot, IO_KBD + KBCMDP, 1, 0, &ioh_c)) {
85: bus_space_unmap(iot, ioh_d, 1);
86: return (0);
87: }
88:
89: /* flush KBC */
90: (void) pckbc_poll_data1(iot, ioh_d, ioh_c, PCKBC_KBD_SLOT, 0);
91:
92: /* KBC selftest */
93: if (pckbc_send_cmd(iot, ioh_c, KBC_SELFTEST) == 0) {
94: ok = 0;
95: goto out;
96: }
97: res = pckbc_poll_data1(iot, ioh_d, ioh_c, PCKBC_KBD_SLOT, 0);
98: if (res != 0x55) {
99: printf("kbc selftest: %x\n", res);
100: ok = 0;
101: }
102: out:
103: bus_space_unmap(iot, ioh_d, 1);
104: bus_space_unmap(iot, ioh_c, 1);
105: }
106:
107: if (ok) {
108: ia->ia_iobase = IO_KBD;
109: ia->ia_iosize = 5;
110: ia->ia_msize = 0x0;
111: }
112: return (ok);
113: }
114:
115: void
116: pckbc_isa_attach(parent, self, aux)
117: struct device *parent, *self;
118: void *aux;
119: {
120: struct pckbc_isa_softc *isc = (void *)self;
121: struct pckbc_softc *sc = &isc->sc_pckbc;
122: struct isa_attach_args *ia = aux;
123: struct pckbc_internal *t;
124: bus_space_tag_t iot;
125: bus_space_handle_t ioh_d, ioh_c;
126:
127: isc->sc_ic = ia->ia_ic;
128: iot = ia->ia_iot;
129:
130: /*
131: * Set up IRQs for "normal" ISA.
132: *
133: * XXX The "aux" slot is different (9) on the Alpha AXP150 Jensen.
134: */
135: isc->sc_irq[PCKBC_KBD_SLOT] = 1;
136: isc->sc_irq[PCKBC_AUX_SLOT] = 12;
137:
138: sc->intr_establish = pckbc_isa_intr_establish;
139:
140: if (pckbc_is_console(iot, IO_KBD)) {
141: t = &pckbc_consdata;
142: ioh_d = t->t_ioh_d;
143: ioh_c = t->t_ioh_c;
144: pckbc_console_attached = 1;
145: /* t->t_cmdbyte was initialized by cnattach */
146: } else {
147: if (bus_space_map(iot, IO_KBD + KBDATAP, 1, 0, &ioh_d) ||
148: bus_space_map(iot, IO_KBD + KBCMDP, 1, 0, &ioh_c))
149: panic("pckbc_attach: couldn't map");
150:
151: t = malloc(sizeof(struct pckbc_internal), M_DEVBUF, M_WAITOK);
152: bzero(t, sizeof(struct pckbc_internal));
153: t->t_iot = iot;
154: t->t_ioh_d = ioh_d;
155: t->t_ioh_c = ioh_c;
156: t->t_addr = IO_KBD;
157: t->t_cmdbyte = KC8_CPU; /* Enable ports */
158: }
159:
160: t->t_sc = sc;
161: sc->id = t;
162:
163: printf("\n");
164:
165: /* Finish off the attach. */
166: pckbc_attach(sc);
167: }
168:
169: void
170: pckbc_isa_intr_establish(sc, slot)
171: struct pckbc_softc *sc;
172: pckbc_slot_t slot;
173: {
174: struct pckbc_isa_softc *isc = (void *) sc;
175: void *rv;
176:
177: rv = isa_intr_establish(isc->sc_ic, isc->sc_irq[slot], IST_EDGE,
178: IPL_TTY, pckbcintr, sc, sc->sc_dv.dv_xname);
179: if (rv == NULL) {
180: printf("%s: unable to establish interrupt for %s slot\n",
181: sc->sc_dv.dv_xname, pckbc_slot_names[slot]);
182: } else {
183: printf("%s: using irq %d for %s slot\n", sc->sc_dv.dv_xname,
184: isc->sc_irq[slot], pckbc_slot_names[slot]);
185: }
186: }
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