Annotation of src/sys/arch/i386/isa/lms.c, Revision 1.44.6.3
1.44.6.3! skrll 1: /* $NetBSD: lms.c,v 1.44.6.2 2004/09/21 13:16:57 skrll Exp $ */
1.14 cgd 2:
1.1 andrew 3: /*-
1.35 mycroft 4: * Copyright (c) 1993, 1994 Charles M. Hannum.
1.1 andrew 5: * Copyright (c) 1992, 1993 Erik Forsberg.
6: * 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: *
14: * THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED
15: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
16: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
17: * NO EVENT SHALL I BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20: * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
21: * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
22: * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
23: * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24: */
1.39 lukem 25:
26: #include <sys/cdefs.h>
1.44.6.3! skrll 27: __KERNEL_RCSID(0, "$NetBSD: lms.c,v 1.44.6.2 2004/09/21 13:16:57 skrll Exp $");
1.1 andrew 28:
1.7 mycroft 29: #include <sys/param.h>
30: #include <sys/systm.h>
31: #include <sys/ioctl.h>
1.8 mycroft 32: #include <sys/device.h>
1.7 mycroft 33:
1.23 thorpej 34: #include <machine/bus.h>
1.26 mycroft 35: #include <machine/intr.h>
1.1 andrew 36:
1.19 cgd 37: #include <dev/isa/isavar.h>
1.1 andrew 38:
1.37 drochner 39: #include <dev/wscons/wsconsio.h>
40: #include <dev/wscons/wsmousevar.h>
41:
1.8 mycroft 42: #define LMS_DATA 0 /* offset for data port, read-only */
43: #define LMS_SIGN 1 /* offset for signature port, read-write */
44: #define LMS_INTR 2 /* offset for interrupt port, read-only */
45: #define LMS_CNTRL 2 /* offset for control port, write-only */
46: #define LMS_CONFIG 3 /* for configuration port, read-write */
47: #define LMS_NPORTS 4
48:
49: struct lms_softc { /* driver status information */
50: struct device sc_dev;
1.19 cgd 51: void *sc_ih;
1.8 mycroft 52:
1.30 thorpej 53: bus_space_tag_t sc_iot; /* bus i/o space identifier */
54: bus_space_handle_t sc_ioh; /* bus i/o handle */
1.23 thorpej 55:
1.37 drochner 56: int sc_enabled; /* device is open */
57: int oldbuttons; /* mouse button status */
58:
59: struct device *sc_wsmousedev;
1.10 mycroft 60: };
1.1 andrew 61:
1.34 drochner 62: int lmsprobe __P((struct device *, struct cfdata *, void *));
1.16 mycroft 63: void lmsattach __P((struct device *, struct device *, void *));
1.19 cgd 64: int lmsintr __P((void *));
1.1 andrew 65:
1.44 thorpej 66: CFATTACH_DECL(lms, sizeof(struct lms_softc),
67: lmsprobe, lmsattach, NULL, NULL);
1.22 thorpej 68:
1.37 drochner 69: int lms_enable __P((void *));
1.44.6.3! skrll 70: int lms_ioctl __P((void *, u_long, caddr_t, int, struct lwp *));
1.37 drochner 71: void lms_disable __P((void *));
72:
73: const struct wsmouse_accessops lms_accessops = {
74: lms_enable,
75: lms_ioctl,
76: lms_disable,
77: };
1.8 mycroft 78:
79: int
1.16 mycroft 80: lmsprobe(parent, match, aux)
81: struct device *parent;
1.34 drochner 82: struct cfdata *match;
83: void *aux;
1.1 andrew 84: {
1.10 mycroft 85: struct isa_attach_args *ia = aux;
1.30 thorpej 86: bus_space_tag_t iot = ia->ia_iot;
87: bus_space_handle_t ioh;
1.23 thorpej 88: int rv;
1.40 thorpej 89:
90: if (ia->ia_nio < 1)
91: return (0);
92: if (ia->ia_nirq < 1)
93: return (0);
94:
95: if (ISA_DIRECT_CONFIG(ia))
96: return (0);
97:
1.31 thorpej 98: /* Disallow wildcarded i/o base. */
1.44.6.1 skrll 99: if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
1.40 thorpej 100: return 0;
1.44.6.1 skrll 101: if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
1.31 thorpej 102: return 0;
103:
1.23 thorpej 104: /* Map the i/o space. */
1.40 thorpej 105: if (bus_space_map(iot, ia->ia_io[0].ir_addr, LMS_NPORTS, 0, &ioh))
1.23 thorpej 106: return 0;
107:
108: rv = 0;
1.1 andrew 109:
1.8 mycroft 110: /* Configure and check for port present. */
1.30 thorpej 111: bus_space_write_1(iot, ioh, LMS_CONFIG, 0x91);
1.9 mycroft 112: delay(10);
1.30 thorpej 113: bus_space_write_1(iot, ioh, LMS_SIGN, 0x0c);
1.9 mycroft 114: delay(10);
1.30 thorpej 115: if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x0c)
1.23 thorpej 116: goto out;
1.30 thorpej 117: bus_space_write_1(iot, ioh, LMS_SIGN, 0x50);
1.9 mycroft 118: delay(10);
1.30 thorpej 119: if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x50)
1.23 thorpej 120: goto out;
1.1 andrew 121:
1.8 mycroft 122: /* Disable interrupts. */
1.30 thorpej 123: bus_space_write_1(iot, ioh, LMS_CNTRL, 0x10);
1.1 andrew 124:
1.23 thorpej 125: rv = 1;
1.40 thorpej 126: ia->ia_nio = 1;
127: ia->ia_io[0].ir_size = LMS_NPORTS;
128:
129: ia->ia_nirq = 1;
130:
131: ia->ia_niomem = 0;
132: ia->ia_ndrq = 0;
1.23 thorpej 133:
134: out:
1.30 thorpej 135: bus_space_unmap(iot, ioh, LMS_NPORTS);
1.23 thorpej 136: return rv;
1.1 andrew 137: }
138:
1.10 mycroft 139: void
140: lmsattach(parent, self, aux)
141: struct device *parent, *self;
142: void *aux;
1.1 andrew 143: {
1.10 mycroft 144: struct lms_softc *sc = (void *)self;
145: struct isa_attach_args *ia = aux;
1.32 mycroft 146: bus_space_tag_t iot = ia->ia_iot;
147: bus_space_handle_t ioh;
1.37 drochner 148: struct wsmousedev_attach_args a;
1.11 mycroft 149:
1.29 christos 150: printf("\n");
1.1 andrew 151:
1.40 thorpej 152: if (bus_space_map(iot, ia->ia_io[0].ir_addr, LMS_NPORTS, 0, &ioh)) {
1.32 mycroft 153: printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
154: return;
155: }
156:
1.8 mycroft 157: /* Other initialization was done by lmsprobe. */
1.32 mycroft 158: sc->sc_iot = iot;
159: sc->sc_ioh = ioh;
1.37 drochner 160: sc->sc_enabled = 0;
1.12 mycroft 161:
1.40 thorpej 162: sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
163: IST_PULSE, IPL_TTY, lmsintr, sc);
1.37 drochner 164:
165: a.accessops = &lms_accessops;
166: a.accesscookie = sc;
167:
168: /*
169: * Attach the wsmouse, saving a handle to it.
170: * Note that we don't need to check this pointer against NULL
171: * here or in psmintr, because if this fails lms_enable() will
172: * never be called, so lmsintr() will never be called.
173: */
174: sc->sc_wsmousedev = config_found(self, &a, wsmousedevprint);
1.1 andrew 175: }
176:
1.8 mycroft 177: int
1.37 drochner 178: lms_enable(v)
179: void *v;
1.1 andrew 180: {
1.37 drochner 181: struct lms_softc *sc = v;
1.1 andrew 182:
1.37 drochner 183: if (sc->sc_enabled)
1.8 mycroft 184: return EBUSY;
1.1 andrew 185:
1.37 drochner 186: sc->sc_enabled = 1;
187: sc->oldbuttons = 0;
1.1 andrew 188:
1.8 mycroft 189: /* Enable interrupts. */
1.30 thorpej 190: bus_space_write_1(sc->sc_iot, sc->sc_ioh, LMS_CNTRL, 0);
1.1 andrew 191:
1.8 mycroft 192: return 0;
1.1 andrew 193: }
194:
1.37 drochner 195: void
196: lms_disable(v)
197: void *v;
1.1 andrew 198: {
1.37 drochner 199: struct lms_softc *sc = v;
1.1 andrew 200:
1.8 mycroft 201: /* Disable interrupts. */
1.30 thorpej 202: bus_space_write_1(sc->sc_iot, sc->sc_ioh, LMS_CNTRL, 0x10);
1.1 andrew 203:
1.37 drochner 204: sc->sc_enabled = 0;
1.1 andrew 205: }
206:
1.8 mycroft 207: int
1.44.6.3! skrll 208: lms_ioctl(v, cmd, data, flag, l)
1.37 drochner 209: void *v;
1.15 cgd 210: u_long cmd;
1.37 drochner 211: caddr_t data;
1.8 mycroft 212: int flag;
1.44.6.3! skrll 213: struct lwp *l;
1.1 andrew 214: {
1.37 drochner 215: #if 0
216: struct lms_softc *sc = v;
217: #endif
1.1 andrew 218:
219: switch (cmd) {
1.37 drochner 220: case WSMOUSEIO_GTYPE:
221: *(u_int *)data = WSMOUSE_TYPE_LMS;
222: return (0);
1.8 mycroft 223: }
1.41 atatat 224: return (EPASSTHROUGH);
1.1 andrew 225: }
226:
1.8 mycroft 227: int
1.19 cgd 228: lmsintr(arg)
229: void *arg;
1.1 andrew 230: {
1.19 cgd 231: struct lms_softc *sc = arg;
1.30 thorpej 232: bus_space_tag_t iot = sc->sc_iot;
233: bus_space_handle_t ioh = sc->sc_ioh;
1.37 drochner 234: u_char hi, lo;
235: signed char dx, dy;
236: u_int buttons;
237: int changed;
1.8 mycroft 238:
1.37 drochner 239: if (!sc->sc_enabled)
1.8 mycroft 240: /* Interrupts are not expected. */
241: return 0;
242:
1.30 thorpej 243: bus_space_write_1(iot, ioh, LMS_CNTRL, 0xab);
244: hi = bus_space_read_1(iot, ioh, LMS_DATA);
245: bus_space_write_1(iot, ioh, LMS_CNTRL, 0x90);
246: lo = bus_space_read_1(iot, ioh, LMS_DATA);
1.8 mycroft 247: dx = ((hi & 0x0f) << 4) | (lo & 0x0f);
248: /* Bounding at -127 avoids a bug in XFree86. */
1.3 mycroft 249: dx = (dx == -128) ? -127 : dx;
250:
1.30 thorpej 251: bus_space_write_1(iot, ioh, LMS_CNTRL, 0xf0);
252: hi = bus_space_read_1(iot, ioh, LMS_DATA);
253: bus_space_write_1(iot, ioh, LMS_CNTRL, 0xd0);
254: lo = bus_space_read_1(iot, ioh, LMS_DATA);
1.8 mycroft 255: dy = ((hi & 0x0f) << 4) | (lo & 0x0f);
1.1 andrew 256: dy = (dy == -128) ? 127 : -dy;
1.3 mycroft 257:
1.30 thorpej 258: bus_space_write_1(iot, ioh, LMS_CNTRL, 0);
1.8 mycroft 259:
1.37 drochner 260: buttons = ((hi & 0x80) ? 0 : 0x1) |
261: ((hi & 0x40) ? 0 : 0x2) |
262: ((hi & 0x20) ? 0 : 0x4);
263: changed = (buttons ^ sc->oldbuttons);
264: sc->oldbuttons = buttons;
265:
266: if (dx || dy || changed)
267: wsmouse_input(sc->sc_wsmousedev,
1.38 takemura 268: buttons, dx, dy, 0, WSMOUSE_INPUT_DELTA);
1.8 mycroft 269:
1.12 mycroft 270: return -1;
1.1 andrew 271: }
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