Annotation of sys/arch/i386/isa/lms.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: lms.c,v 1.20 2007/04/10 22:37:17 miod Exp $ */
2: /* $NetBSD: lms.c,v 1.38 2000/01/08 02:57:25 takemura Exp $ */
3:
4: /*-
5: * Copyright (c) 1993, 1994 Charles M. Hannum.
6: * Copyright (c) 1992, 1993 Erik Forsberg.
7: * All rights reserved.
8: *
9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: *
15: * THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED
16: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
17: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
18: * NO EVENT SHALL I BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21: * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
22: * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
23: * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
24: * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25: */
26:
27: #include <sys/param.h>
28: #include <sys/systm.h>
29: #include <sys/ioctl.h>
30: #include <sys/device.h>
31:
32: #include <machine/bus.h>
33: #include <machine/intr.h>
34:
35: #include <dev/isa/isavar.h>
36:
37: #include <dev/wscons/wsconsio.h>
38: #include <dev/wscons/wsmousevar.h>
39:
40: #define LMS_DATA 0 /* offset for data port, read-only */
41: #define LMS_SIGN 1 /* offset for signature port, read-write */
42: #define LMS_INTR 2 /* offset for interrupt port, read-only */
43: #define LMS_CNTRL 2 /* offset for control port, write-only */
44: #define LMS_CONFIG 3 /* for configuration port, read-write */
45: #define LMS_NPORTS 4
46:
47: struct lms_softc { /* driver status information */
48: struct device sc_dev;
49: void *sc_ih;
50:
51: bus_space_tag_t sc_iot; /* bus i/o space identifier */
52: bus_space_handle_t sc_ioh; /* bus i/o handle */
53:
54: int sc_enabled; /* device is open */
55: int oldbuttons; /* mouse button status */
56:
57: struct device *sc_wsmousedev;
58: };
59:
60: int lmsprobe(struct device *, void *, void *);
61: void lmsattach(struct device *, struct device *, void *);
62: int lmsintr(void *);
63:
64: struct cfattach lms_ca = {
65: sizeof(struct lms_softc), lmsprobe, lmsattach
66: };
67:
68: int lms_enable(void *);
69: int lms_ioctl(void *, u_long, caddr_t, int, struct proc *);
70: void lms_disable(void *);
71:
72: const struct wsmouse_accessops lms_accessops = {
73: lms_enable,
74: lms_ioctl,
75: lms_disable,
76: };
77:
78: int
79: lmsprobe(struct device *parent, void *match, void *aux)
80: {
81: struct isa_attach_args *ia = aux;
82: bus_space_tag_t iot = ia->ia_iot;
83: bus_space_handle_t ioh;
84: int rv;
85:
86: /* Disallow wildcarded i/o base. */
87: if (ia->ia_iobase == IOBASEUNK)
88: return 0;
89:
90: /* Map the i/o space. */
91: if (bus_space_map(iot, ia->ia_iobase, LMS_NPORTS, 0, &ioh))
92: return 0;
93:
94: rv = 0;
95:
96: /* Configure and check for port present. */
97: bus_space_write_1(iot, ioh, LMS_CONFIG, 0x91);
98: delay(10);
99: bus_space_write_1(iot, ioh, LMS_SIGN, 0x0c);
100: delay(10);
101: if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x0c)
102: goto out;
103: bus_space_write_1(iot, ioh, LMS_SIGN, 0x50);
104: delay(10);
105: if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x50)
106: goto out;
107:
108: /* Disable interrupts. */
109: bus_space_write_1(iot, ioh, LMS_CNTRL, 0x10);
110:
111: rv = 1;
112: ia->ia_iosize = LMS_NPORTS;
113: ia->ia_msize = 0;
114:
115: out:
116: bus_space_unmap(iot, ioh, LMS_NPORTS);
117: return rv;
118: }
119:
120: void
121: lmsattach(struct device *parent, struct device *self, void *aux)
122: {
123: struct lms_softc *sc = (void *)self;
124: struct isa_attach_args *ia = aux;
125: bus_space_tag_t iot = ia->ia_iot;
126: bus_space_handle_t ioh;
127: struct wsmousedev_attach_args a;
128:
129: printf("\n");
130:
131: if (bus_space_map(iot, ia->ia_iobase, LMS_NPORTS, 0, &ioh)) {
132: printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
133: return;
134: }
135:
136: /* Other initialization was done by lmsprobe. */
137: sc->sc_iot = iot;
138: sc->sc_ioh = ioh;
139: sc->sc_enabled = 0;
140:
141: sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_PULSE,
142: IPL_TTY, lmsintr, sc, sc->sc_dev.dv_xname);
143:
144: a.accessops = &lms_accessops;
145: a.accesscookie = sc;
146:
147: /*
148: * Attach the wsmouse, saving a handle to it.
149: * Note that we don't need to check this pointer against NULL
150: * here or in psmintr, because if this fails lms_enable() will
151: * never be called, so lmsintr() will never be called.
152: */
153: sc->sc_wsmousedev = config_found(self, &a, wsmousedevprint);
154: }
155:
156: int
157: lms_enable(void *v)
158: {
159: struct lms_softc *sc = v;
160:
161: if (sc->sc_enabled)
162: return EBUSY;
163:
164: sc->sc_enabled = 1;
165: sc->oldbuttons = 0;
166:
167: /* Enable interrupts. */
168: bus_space_write_1(sc->sc_iot, sc->sc_ioh, LMS_CNTRL, 0);
169:
170: return 0;
171: }
172:
173: void
174: lms_disable(void *v)
175: {
176: struct lms_softc *sc = v;
177:
178: /* Disable interrupts. */
179: bus_space_write_1(sc->sc_iot, sc->sc_ioh, LMS_CNTRL, 0x10);
180:
181: sc->sc_enabled = 0;
182: }
183:
184: int
185: lms_ioctl(void *v, u_long cmd, caddr_t data, int flag, struct proc *p)
186: {
187: #if 0
188: struct lms_softc *sc = v;
189: #endif
190:
191: switch (cmd) {
192: case WSMOUSEIO_GTYPE:
193: *(u_int *)data = WSMOUSE_TYPE_LMS;
194: return (0);
195: }
196: return (-1);
197: }
198:
199: int
200: lmsintr(void *arg)
201: {
202: struct lms_softc *sc = arg;
203: bus_space_tag_t iot = sc->sc_iot;
204: bus_space_handle_t ioh = sc->sc_ioh;
205: u_char hi, lo;
206: signed char dx, dy;
207: u_int buttons;
208: int changed;
209:
210: if (!sc->sc_enabled)
211: /* Interrupts are not expected. */
212: return 0;
213:
214: bus_space_write_1(iot, ioh, LMS_CNTRL, 0xab);
215: hi = bus_space_read_1(iot, ioh, LMS_DATA);
216: bus_space_write_1(iot, ioh, LMS_CNTRL, 0x90);
217: lo = bus_space_read_1(iot, ioh, LMS_DATA);
218: dx = ((hi & 0x0f) << 4) | (lo & 0x0f);
219: /* Bounding at -127 avoids a bug in XFree86. */
220: dx = (dx == -128) ? -127 : dx;
221:
222: bus_space_write_1(iot, ioh, LMS_CNTRL, 0xf0);
223: hi = bus_space_read_1(iot, ioh, LMS_DATA);
224: bus_space_write_1(iot, ioh, LMS_CNTRL, 0xd0);
225: lo = bus_space_read_1(iot, ioh, LMS_DATA);
226: dy = ((hi & 0x0f) << 4) | (lo & 0x0f);
227: dy = (dy == -128) ? 127 : -dy;
228:
229: bus_space_write_1(iot, ioh, LMS_CNTRL, 0);
230:
231: buttons = ((hi & 0x80) ? 0 : 0x1) |
232: ((hi & 0x40) ? 0 : 0x2) |
233: ((hi & 0x20) ? 0 : 0x4);
234: changed = (buttons ^ sc->oldbuttons);
235: sc->oldbuttons = buttons;
236:
237: if (dx || dy || changed)
238: wsmouse_input(sc->sc_wsmousedev,
239: buttons, dx, dy, 0, 0, WSMOUSE_INPUT_DELTA);
240:
241: return -1;
242: }
243:
244: struct cfdriver lms_cd = {
245: NULL, "lms", DV_DULL
246: };
CVSweb
![[BACK]](/icons/back.gif){kind=icon}
Return to lms.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / arch / i386 / isa