lms.c revision 1.37.8.1
1 /* $NetBSD: lms.c,v 1.37.8.1 2000/11/20 20:09:32 bouyer Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, 1994 Charles M. Hannum. 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 */ 25 26 #include <sys/param.h> 27 #include <sys/systm.h> 28 #include <sys/ioctl.h> 29 #include <sys/device.h> 30 31 #include <machine/bus.h> 32 #include <machine/intr.h> 33 34 #include <dev/isa/isavar.h> 35 36 #include <dev/wscons/wsconsio.h> 37 #include <dev/wscons/wsmousevar.h> 38 39 #define LMS_DATA 0 /* offset for data port, read-only */ 40 #define LMS_SIGN 1 /* offset for signature port, read-write */ 41 #define LMS_INTR 2 /* offset for interrupt port, read-only */ 42 #define LMS_CNTRL 2 /* offset for control port, write-only */ 43 #define LMS_CONFIG 3 /* for configuration port, read-write */ 44 #define LMS_NPORTS 4 45 46 struct lms_softc { /* driver status information */ 47 struct device sc_dev; 48 void *sc_ih; 49 50 bus_space_tag_t sc_iot; /* bus i/o space identifier */ 51 bus_space_handle_t sc_ioh; /* bus i/o handle */ 52 53 int sc_enabled; /* device is open */ 54 int oldbuttons; /* mouse button status */ 55 56 struct device *sc_wsmousedev; 57 }; 58 59 int lmsprobe __P((struct device *, struct cfdata *, void *)); 60 void lmsattach __P((struct device *, struct device *, void *)); 61 int lmsintr __P((void *)); 62 63 struct cfattach lms_ca = { 64 sizeof(struct lms_softc), lmsprobe, lmsattach 65 }; 66 67 int lms_enable __P((void *)); 68 int lms_ioctl __P((void *, u_long, caddr_t, int, struct proc *)); 69 void lms_disable __P((void *)); 70 71 const struct wsmouse_accessops lms_accessops = { 72 lms_enable, 73 lms_ioctl, 74 lms_disable, 75 }; 76 77 int 78 lmsprobe(parent, match, aux) 79 struct device *parent; 80 struct cfdata *match; 81 void *aux; 82 { 83 struct isa_attach_args *ia = aux; 84 bus_space_tag_t iot = ia->ia_iot; 85 bus_space_handle_t ioh; 86 int rv; 87 88 /* Disallow wildcarded i/o base. */ 89 if (ia->ia_iobase == ISACF_PORT_DEFAULT) 90 return 0; 91 92 /* Map the i/o space. */ 93 if (bus_space_map(iot, ia->ia_iobase, LMS_NPORTS, 0, &ioh)) 94 return 0; 95 96 rv = 0; 97 98 /* Configure and check for port present. */ 99 bus_space_write_1(iot, ioh, LMS_CONFIG, 0x91); 100 delay(10); 101 bus_space_write_1(iot, ioh, LMS_SIGN, 0x0c); 102 delay(10); 103 if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x0c) 104 goto out; 105 bus_space_write_1(iot, ioh, LMS_SIGN, 0x50); 106 delay(10); 107 if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x50) 108 goto out; 109 110 /* Disable interrupts. */ 111 bus_space_write_1(iot, ioh, LMS_CNTRL, 0x10); 112 113 rv = 1; 114 ia->ia_iosize = LMS_NPORTS; 115 ia->ia_msize = 0; 116 117 out: 118 bus_space_unmap(iot, ioh, LMS_NPORTS); 119 return rv; 120 } 121 122 void 123 lmsattach(parent, self, aux) 124 struct device *parent, *self; 125 void *aux; 126 { 127 struct lms_softc *sc = (void *)self; 128 struct isa_attach_args *ia = aux; 129 bus_space_tag_t iot = ia->ia_iot; 130 bus_space_handle_t ioh; 131 struct wsmousedev_attach_args a; 132 133 printf("\n"); 134 135 if (bus_space_map(iot, ia->ia_iobase, LMS_NPORTS, 0, &ioh)) { 136 printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); 137 return; 138 } 139 140 /* Other initialization was done by lmsprobe. */ 141 sc->sc_iot = iot; 142 sc->sc_ioh = ioh; 143 sc->sc_enabled = 0; 144 145 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_PULSE, 146 IPL_TTY, lmsintr, sc); 147 148 a.accessops = &lms_accessops; 149 a.accesscookie = sc; 150 151 /* 152 * Attach the wsmouse, saving a handle to it. 153 * Note that we don't need to check this pointer against NULL 154 * here or in psmintr, because if this fails lms_enable() will 155 * never be called, so lmsintr() will never be called. 156 */ 157 sc->sc_wsmousedev = config_found(self, &a, wsmousedevprint); 158 } 159 160 int 161 lms_enable(v) 162 void *v; 163 { 164 struct lms_softc *sc = v; 165 166 if (sc->sc_enabled) 167 return EBUSY; 168 169 sc->sc_enabled = 1; 170 sc->oldbuttons = 0; 171 172 /* Enable interrupts. */ 173 bus_space_write_1(sc->sc_iot, sc->sc_ioh, LMS_CNTRL, 0); 174 175 return 0; 176 } 177 178 void 179 lms_disable(v) 180 void *v; 181 { 182 struct lms_softc *sc = v; 183 184 /* Disable interrupts. */ 185 bus_space_write_1(sc->sc_iot, sc->sc_ioh, LMS_CNTRL, 0x10); 186 187 sc->sc_enabled = 0; 188 } 189 190 int 191 lms_ioctl(v, cmd, data, flag, p) 192 void *v; 193 u_long cmd; 194 caddr_t data; 195 int flag; 196 struct proc *p; 197 { 198 #if 0 199 struct lms_softc *sc = v; 200 #endif 201 202 switch (cmd) { 203 case WSMOUSEIO_GTYPE: 204 *(u_int *)data = WSMOUSE_TYPE_LMS; 205 return (0); 206 } 207 return (-1); 208 } 209 210 int 211 lmsintr(arg) 212 void *arg; 213 { 214 struct lms_softc *sc = arg; 215 bus_space_tag_t iot = sc->sc_iot; 216 bus_space_handle_t ioh = sc->sc_ioh; 217 u_char hi, lo; 218 signed char dx, dy; 219 u_int buttons; 220 int changed; 221 222 if (!sc->sc_enabled) 223 /* Interrupts are not expected. */ 224 return 0; 225 226 bus_space_write_1(iot, ioh, LMS_CNTRL, 0xab); 227 hi = bus_space_read_1(iot, ioh, LMS_DATA); 228 bus_space_write_1(iot, ioh, LMS_CNTRL, 0x90); 229 lo = bus_space_read_1(iot, ioh, LMS_DATA); 230 dx = ((hi & 0x0f) << 4) | (lo & 0x0f); 231 /* Bounding at -127 avoids a bug in XFree86. */ 232 dx = (dx == -128) ? -127 : dx; 233 234 bus_space_write_1(iot, ioh, LMS_CNTRL, 0xf0); 235 hi = bus_space_read_1(iot, ioh, LMS_DATA); 236 bus_space_write_1(iot, ioh, LMS_CNTRL, 0xd0); 237 lo = bus_space_read_1(iot, ioh, LMS_DATA); 238 dy = ((hi & 0x0f) << 4) | (lo & 0x0f); 239 dy = (dy == -128) ? 127 : -dy; 240 241 bus_space_write_1(iot, ioh, LMS_CNTRL, 0); 242 243 buttons = ((hi & 0x80) ? 0 : 0x1) | 244 ((hi & 0x40) ? 0 : 0x2) | 245 ((hi & 0x20) ? 0 : 0x4); 246 changed = (buttons ^ sc->oldbuttons); 247 sc->oldbuttons = buttons; 248 249 if (dx || dy || changed) 250 wsmouse_input(sc->sc_wsmousedev, 251 buttons, dx, dy, 0, WSMOUSE_INPUT_DELTA); 252 253 return -1; 254 } 255
Indexes created Thu Nov 06 07:09:58 GMT 2025