lms.c revision 1.39
1 /* $NetBSD: lms.c,v 1.39 2001/11/15 07:03:32 lukem 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/cdefs.h> 27 __KERNEL_RCSID(0, "$NetBSD: lms.c,v 1.39 2001/11/15 07:03:32 lukem Exp $"); 28 29 #include <sys/param.h> 30 #include <sys/systm.h> 31 #include <sys/ioctl.h> 32 #include <sys/device.h> 33 34 #include <machine/bus.h> 35 #include <machine/intr.h> 36 37 #include <dev/isa/isavar.h> 38 39 #include <dev/wscons/wsconsio.h> 40 #include <dev/wscons/wsmousevar.h> 41 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; 51 void *sc_ih; 52 53 bus_space_tag_t sc_iot; /* bus i/o space identifier */ 54 bus_space_handle_t sc_ioh; /* bus i/o handle */ 55 56 int sc_enabled; /* device is open */ 57 int oldbuttons; /* mouse button status */ 58 59 struct device *sc_wsmousedev; 60 }; 61 62 int lmsprobe __P((struct device *, struct cfdata *, void *)); 63 void lmsattach __P((struct device *, struct device *, void *)); 64 int lmsintr __P((void *)); 65 66 struct cfattach lms_ca = { 67 sizeof(struct lms_softc), lmsprobe, lmsattach 68 }; 69 70 int lms_enable __P((void *)); 71 int lms_ioctl __P((void *, u_long, caddr_t, int, struct proc *)); 72 void lms_disable __P((void *)); 73 74 const struct wsmouse_accessops lms_accessops = { 75 lms_enable, 76 lms_ioctl, 77 lms_disable, 78 }; 79 80 int 81 lmsprobe(parent, match, aux) 82 struct device *parent; 83 struct cfdata *match; 84 void *aux; 85 { 86 struct isa_attach_args *ia = aux; 87 bus_space_tag_t iot = ia->ia_iot; 88 bus_space_handle_t ioh; 89 int rv; 90 91 /* Disallow wildcarded i/o base. */ 92 if (ia->ia_iobase == ISACF_PORT_DEFAULT) 93 return 0; 94 95 /* Map the i/o space. */ 96 if (bus_space_map(iot, ia->ia_iobase, LMS_NPORTS, 0, &ioh)) 97 return 0; 98 99 rv = 0; 100 101 /* Configure and check for port present. */ 102 bus_space_write_1(iot, ioh, LMS_CONFIG, 0x91); 103 delay(10); 104 bus_space_write_1(iot, ioh, LMS_SIGN, 0x0c); 105 delay(10); 106 if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x0c) 107 goto out; 108 bus_space_write_1(iot, ioh, LMS_SIGN, 0x50); 109 delay(10); 110 if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x50) 111 goto out; 112 113 /* Disable interrupts. */ 114 bus_space_write_1(iot, ioh, LMS_CNTRL, 0x10); 115 116 rv = 1; 117 ia->ia_iosize = LMS_NPORTS; 118 ia->ia_msize = 0; 119 120 out: 121 bus_space_unmap(iot, ioh, LMS_NPORTS); 122 return rv; 123 } 124 125 void 126 lmsattach(parent, self, aux) 127 struct device *parent, *self; 128 void *aux; 129 { 130 struct lms_softc *sc = (void *)self; 131 struct isa_attach_args *ia = aux; 132 bus_space_tag_t iot = ia->ia_iot; 133 bus_space_handle_t ioh; 134 struct wsmousedev_attach_args a; 135 136 printf("\n"); 137 138 if (bus_space_map(iot, ia->ia_iobase, LMS_NPORTS, 0, &ioh)) { 139 printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); 140 return; 141 } 142 143 /* Other initialization was done by lmsprobe. */ 144 sc->sc_iot = iot; 145 sc->sc_ioh = ioh; 146 sc->sc_enabled = 0; 147 148 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_PULSE, 149 IPL_TTY, lmsintr, sc); 150 151 a.accessops = &lms_accessops; 152 a.accesscookie = sc; 153 154 /* 155 * Attach the wsmouse, saving a handle to it. 156 * Note that we don't need to check this pointer against NULL 157 * here or in psmintr, because if this fails lms_enable() will 158 * never be called, so lmsintr() will never be called. 159 */ 160 sc->sc_wsmousedev = config_found(self, &a, wsmousedevprint); 161 } 162 163 int 164 lms_enable(v) 165 void *v; 166 { 167 struct lms_softc *sc = v; 168 169 if (sc->sc_enabled) 170 return EBUSY; 171 172 sc->sc_enabled = 1; 173 sc->oldbuttons = 0; 174 175 /* Enable interrupts. */ 176 bus_space_write_1(sc->sc_iot, sc->sc_ioh, LMS_CNTRL, 0); 177 178 return 0; 179 } 180 181 void 182 lms_disable(v) 183 void *v; 184 { 185 struct lms_softc *sc = v; 186 187 /* Disable interrupts. */ 188 bus_space_write_1(sc->sc_iot, sc->sc_ioh, LMS_CNTRL, 0x10); 189 190 sc->sc_enabled = 0; 191 } 192 193 int 194 lms_ioctl(v, cmd, data, flag, p) 195 void *v; 196 u_long cmd; 197 caddr_t data; 198 int flag; 199 struct proc *p; 200 { 201 #if 0 202 struct lms_softc *sc = v; 203 #endif 204 205 switch (cmd) { 206 case WSMOUSEIO_GTYPE: 207 *(u_int *)data = WSMOUSE_TYPE_LMS; 208 return (0); 209 } 210 return (-1); 211 } 212 213 int 214 lmsintr(arg) 215 void *arg; 216 { 217 struct lms_softc *sc = arg; 218 bus_space_tag_t iot = sc->sc_iot; 219 bus_space_handle_t ioh = sc->sc_ioh; 220 u_char hi, lo; 221 signed char dx, dy; 222 u_int buttons; 223 int changed; 224 225 if (!sc->sc_enabled) 226 /* Interrupts are not expected. */ 227 return 0; 228 229 bus_space_write_1(iot, ioh, LMS_CNTRL, 0xab); 230 hi = bus_space_read_1(iot, ioh, LMS_DATA); 231 bus_space_write_1(iot, ioh, LMS_CNTRL, 0x90); 232 lo = bus_space_read_1(iot, ioh, LMS_DATA); 233 dx = ((hi & 0x0f) << 4) | (lo & 0x0f); 234 /* Bounding at -127 avoids a bug in XFree86. */ 235 dx = (dx == -128) ? -127 : dx; 236 237 bus_space_write_1(iot, ioh, LMS_CNTRL, 0xf0); 238 hi = bus_space_read_1(iot, ioh, LMS_DATA); 239 bus_space_write_1(iot, ioh, LMS_CNTRL, 0xd0); 240 lo = bus_space_read_1(iot, ioh, LMS_DATA); 241 dy = ((hi & 0x0f) << 4) | (lo & 0x0f); 242 dy = (dy == -128) ? 127 : -dy; 243 244 bus_space_write_1(iot, ioh, LMS_CNTRL, 0); 245 246 buttons = ((hi & 0x80) ? 0 : 0x1) | 247 ((hi & 0x40) ? 0 : 0x2) | 248 ((hi & 0x20) ? 0 : 0x4); 249 changed = (buttons ^ sc->oldbuttons); 250 sc->oldbuttons = buttons; 251 252 if (dx || dy || changed) 253 wsmouse_input(sc->sc_wsmousedev, 254 buttons, dx, dy, 0, WSMOUSE_INPUT_DELTA); 255 256 return -1; 257 } 258
Indexes created Thu Nov 06 07:09:58 GMT 2025