lms.c revision 1.44.6.3
1 /* $NetBSD: lms.c,v 1.44.6.3 2004/12/18 09:31:14 skrll 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 1.44.6.3 2004/12/18 09:31:14 skrll 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 CFATTACH_DECL(lms, sizeof(struct lms_softc), 67 lmsprobe, lmsattach, NULL, NULL); 68 69 int lms_enable __P((void *)); 70 int lms_ioctl __P((void *, u_long, caddr_t, int, struct lwp *)); 71 void lms_disable __P((void *)); 72 73 const struct wsmouse_accessops lms_accessops = { 74 lms_enable, 75 lms_ioctl, 76 lms_disable, 77 }; 78 79 int 80 lmsprobe(parent, match, aux) 81 struct device *parent; 82 struct cfdata *match; 83 void *aux; 84 { 85 struct isa_attach_args *ia = aux; 86 bus_space_tag_t iot = ia->ia_iot; 87 bus_space_handle_t ioh; 88 int rv; 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 98 /* Disallow wildcarded i/o base. */ 99 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 100 return 0; 101 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 102 return 0; 103 104 /* Map the i/o space. */ 105 if (bus_space_map(iot, ia->ia_io[0].ir_addr, LMS_NPORTS, 0, &ioh)) 106 return 0; 107 108 rv = 0; 109 110 /* Configure and check for port present. */ 111 bus_space_write_1(iot, ioh, LMS_CONFIG, 0x91); 112 delay(10); 113 bus_space_write_1(iot, ioh, LMS_SIGN, 0x0c); 114 delay(10); 115 if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x0c) 116 goto out; 117 bus_space_write_1(iot, ioh, LMS_SIGN, 0x50); 118 delay(10); 119 if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x50) 120 goto out; 121 122 /* Disable interrupts. */ 123 bus_space_write_1(iot, ioh, LMS_CNTRL, 0x10); 124 125 rv = 1; 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; 133 134 out: 135 bus_space_unmap(iot, ioh, LMS_NPORTS); 136 return rv; 137 } 138 139 void 140 lmsattach(parent, self, aux) 141 struct device *parent, *self; 142 void *aux; 143 { 144 struct lms_softc *sc = (void *)self; 145 struct isa_attach_args *ia = aux; 146 bus_space_tag_t iot = ia->ia_iot; 147 bus_space_handle_t ioh; 148 struct wsmousedev_attach_args a; 149 150 printf("\n"); 151 152 if (bus_space_map(iot, ia->ia_io[0].ir_addr, LMS_NPORTS, 0, &ioh)) { 153 printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); 154 return; 155 } 156 157 /* Other initialization was done by lmsprobe. */ 158 sc->sc_iot = iot; 159 sc->sc_ioh = ioh; 160 sc->sc_enabled = 0; 161 162 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 163 IST_PULSE, IPL_TTY, lmsintr, sc); 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); 175 } 176 177 int 178 lms_enable(v) 179 void *v; 180 { 181 struct lms_softc *sc = v; 182 183 if (sc->sc_enabled) 184 return EBUSY; 185 186 sc->sc_enabled = 1; 187 sc->oldbuttons = 0; 188 189 /* Enable interrupts. */ 190 bus_space_write_1(sc->sc_iot, sc->sc_ioh, LMS_CNTRL, 0); 191 192 return 0; 193 } 194 195 void 196 lms_disable(v) 197 void *v; 198 { 199 struct lms_softc *sc = v; 200 201 /* Disable interrupts. */ 202 bus_space_write_1(sc->sc_iot, sc->sc_ioh, LMS_CNTRL, 0x10); 203 204 sc->sc_enabled = 0; 205 } 206 207 int 208 lms_ioctl(v, cmd, data, flag, l) 209 void *v; 210 u_long cmd; 211 caddr_t data; 212 int flag; 213 struct lwp *l; 214 { 215 #if 0 216 struct lms_softc *sc = v; 217 #endif 218 219 switch (cmd) { 220 case WSMOUSEIO_GTYPE: 221 *(u_int *)data = WSMOUSE_TYPE_LMS; 222 return (0); 223 } 224 return (EPASSTHROUGH); 225 } 226 227 int 228 lmsintr(arg) 229 void *arg; 230 { 231 struct lms_softc *sc = arg; 232 bus_space_tag_t iot = sc->sc_iot; 233 bus_space_handle_t ioh = sc->sc_ioh; 234 u_char hi, lo; 235 signed char dx, dy; 236 u_int buttons; 237 int changed; 238 239 if (!sc->sc_enabled) 240 /* Interrupts are not expected. */ 241 return 0; 242 243 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); 247 dx = ((hi & 0x0f) << 4) | (lo & 0x0f); 248 /* Bounding at -127 avoids a bug in XFree86. */ 249 dx = (dx == -128) ? -127 : dx; 250 251 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); 255 dy = ((hi & 0x0f) << 4) | (lo & 0x0f); 256 dy = (dy == -128) ? 127 : -dy; 257 258 bus_space_write_1(iot, ioh, LMS_CNTRL, 0); 259 260 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, 268 buttons, dx, dy, 0, WSMOUSE_INPUT_DELTA); 269 270 return -1; 271 } 272
Indexes created Thu Nov 06 07:09:58 GMT 2025