Annotation of sys/arch/sparc64/dev/ppm.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: ppm.c,v 1.1 2006/06/02 04:46:01 jason Exp $ */
2:
3: /*
4: * Copyright (c) 2006 Jason L. Wright (jason@thought.net)
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
18: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 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 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 IN
25: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26: * POSSIBILITY OF SUCH DAMAGE.
27: */
28:
29: #include <sys/types.h>
30: #include <sys/param.h>
31: #include <sys/systm.h>
32: #include <sys/device.h>
33:
34: #include <machine/bus.h>
35: #include <machine/autoconf.h>
36: #include <machine/openfirm.h>
37:
38: #include <sparc64/dev/ebusreg.h>
39: #include <sparc64/dev/ebusvar.h>
40:
41: #define BBC_GPIOBANK_INDEX 0x0
42: #define BBC_GPIOBANK_DATA 0x1
43:
44: #define BBC_GPIO_PORT1_DATA 0x0
45: #define BBC_GPIO_PORT2_DATA 0x4
46:
47: #define GPIO_P2D_LED 0x2
48:
49: struct ppm_softc {
50: struct device sc_dv;
51: bus_space_tag_t sc_iot;
52: bus_space_handle_t sc_estarh;
53: bus_space_handle_t sc_rioh;
54: bus_space_handle_t sc_gpiobankh;
55: bus_space_handle_t sc_gpioh;
56: struct blink_led sc_blink;
57: };
58:
59: int ppm_match(struct device *, void *, void *);
60: void ppm_attach(struct device *, struct device *, void *);
61:
62: struct cfattach ppm_ca = {
63: sizeof(struct ppm_softc), ppm_match, ppm_attach
64: };
65:
66: struct cfdriver ppm_cd = {
67: NULL, "ppm", DV_DULL
68: };
69:
70: void ppm_led_blink(void *, int);
71:
72: int
73: ppm_match(struct device *parent, void *match, void *aux)
74: {
75: struct ebus_attach_args *ea = aux;
76:
77: if (strcmp(ea->ea_name, "ppm"))
78: return (0);
79: return (1);
80: }
81:
82: void
83: ppm_attach(struct device *parent, struct device *self, void *aux)
84: {
85: struct ppm_softc *sc = (void *)self;
86: struct ebus_attach_args *ea = aux;
87: u_int8_t reg;
88:
89: sc->sc_iot = ea->ea_memtag;
90:
91: if (ea->ea_nregs < 4) {
92: printf(": need %d regs\n", 4);
93: return;
94: }
95:
96: #if 0
97: if (ebus_bus_map(sc->sc_iot, 0,
98: EBUS_PADDR_FROM_REG(&ea->ea_regs[0]), ea->ea_regs[0].size,
99: 0, 0, &sc->sc_estarh)) {
100: printf(": failed to map estar\n");
101: return;
102: }
103: #endif
104: #if 0
105: if (ebus_bus_map(sc->sc_iot, 0,
106: EBUS_PADDR_FROM_REG(&ea->ea_regs[1]), ea->ea_regs[1].size,
107: 0, 0, &sc->sc_rioh)) {
108: printf(": failed to map riohr\n");
109: return;
110: }
111: #endif
112:
113: if (ebus_bus_map(sc->sc_iot, 0,
114: EBUS_PADDR_FROM_REG(&ea->ea_regs[2]), ea->ea_regs[2].size,
115: 0, 0, &sc->sc_gpiobankh)) {
116: printf(": failed to map gpiobank\n");
117: return;
118: }
119:
120: if (ebus_bus_map(sc->sc_iot, 0,
121: EBUS_PADDR_FROM_REG(&ea->ea_regs[3]), ea->ea_regs[3].size,
122: 0, 0, &sc->sc_gpioh)) {
123: printf(": failed to map gpio\n");
124: return;
125: }
126:
127: bus_space_write_1(sc->sc_iot, sc->sc_gpiobankh,
128: BBC_GPIOBANK_INDEX, 0x22);
129: bus_space_read_1(sc->sc_iot, sc->sc_gpiobankh, BBC_GPIOBANK_INDEX);
130: reg = bus_space_read_1(sc->sc_iot, sc->sc_gpiobankh, BBC_GPIOBANK_DATA);
131: reg &= 0x7f;
132: bus_space_write_1(sc->sc_iot, sc->sc_gpiobankh,BBC_GPIOBANK_INDEX, reg);
133: bus_space_read_1(sc->sc_iot, sc->sc_gpiobankh, BBC_GPIOBANK_INDEX);
134:
135:
136: sc->sc_blink.bl_func = ppm_led_blink;
137: sc->sc_blink.bl_arg = sc;
138: blink_led_register(&sc->sc_blink);
139: printf("\n");
140: }
141:
142: void
143: ppm_led_blink(void *vsc, int on)
144: {
145: struct ppm_softc *sc = vsc;
146: u_int8_t r;
147:
148: r = bus_space_read_1(sc->sc_iot, sc->sc_gpioh, BBC_GPIO_PORT1_DATA);
149: if (on)
150: r |= GPIO_P2D_LED;
151: else
152: r &= ~GPIO_P2D_LED;
153: bus_space_write_1(sc->sc_iot, sc->sc_gpioh, BBC_GPIO_PORT1_DATA, r);
154: bus_space_read_1(sc->sc_iot, sc->sc_gpioh, BBC_GPIO_PORT1_DATA);
155: }
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