lms.c revision 1.43
1 /* $NetBSD: lms.c,v 1.43 2002/10/01 12:57:12 fvdl 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 1.43 2002/10/01 12:57:12 fvdl 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), lmsprobe, lmsattach, NULL, NULL) 67 68 int lms_enable __P((void *)); 69 int lms_ioctl __P((void *, u_long, caddr_t, int, struct proc *)); 70 void lms_disable __P((void *)); 71 72 const struct wsmouse_accessops lms_accessops = { 73 lms_enable, 74 lms_ioctl, 75 lms_disable, 76 }; 77 78 int 79 lmsprobe(parent, match, aux) 80 struct device *parent; 81 struct cfdata *match; 82 void *aux; 83 { 84 struct isa_attach_args *ia = aux; 85 bus_space_tag_t iot = ia->ia_iot; 86 bus_space_handle_t ioh; 87 int rv; 88 89 if (ia->ia_nio < 1) 90 return (0); 91 if (ia->ia_nirq < 1) 92 return (0); 93 94 if (ISA_DIRECT_CONFIG(ia)) 95 return (0); 96 97 /* Disallow wildcarded i/o base. */ 98 if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT) 99 return 0; 100 if (ia->ia_irq[0].ir_irq == ISACF_IRQ_DEFAULT) 101 return 0; 102 103 /* Map the i/o space. */ 104 if (bus_space_map(iot, ia->ia_io[0].ir_addr, LMS_NPORTS, 0, &ioh)) 105 return 0; 106 107 rv = 0; 108 109 /* Configure and check for port present. */ 110 bus_space_write_1(iot, ioh, LMS_CONFIG, 0x91); 111 delay(10); 112 bus_space_write_1(iot, ioh, LMS_SIGN, 0x0c); 113 delay(10); 114 if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x0c) 115 goto out; 116 bus_space_write_1(iot, ioh, LMS_SIGN, 0x50); 117 delay(10); 118 if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x50) 119 goto out; 120 121 /* Disable interrupts. */ 122 bus_space_write_1(iot, ioh, LMS_CNTRL, 0x10); 123 124 rv = 1; 125 ia->ia_nio = 1; 126 ia->ia_io[0].ir_size = LMS_NPORTS; 127 128 ia->ia_nirq = 1; 129 130 ia->ia_niomem = 0; 131 ia->ia_ndrq = 0; 132 133 out: 134 bus_space_unmap(iot, ioh, LMS_NPORTS); 135 return rv; 136 } 137 138 void 139 lmsattach(parent, self, aux) 140 struct device *parent, *self; 141 void *aux; 142 { 143 struct lms_softc *sc = (void *)self; 144 struct isa_attach_args *ia = aux; 145 bus_space_tag_t iot = ia->ia_iot; 146 bus_space_handle_t ioh; 147 struct wsmousedev_attach_args a; 148 149 printf("\n"); 150 151 if (bus_space_map(iot, ia->ia_io[0].ir_addr, LMS_NPORTS, 0, &ioh)) { 152 printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); 153 return; 154 } 155 156 /* Other initialization was done by lmsprobe. */ 157 sc->sc_iot = iot; 158 sc->sc_ioh = ioh; 159 sc->sc_enabled = 0; 160 161 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 162 IST_PULSE, IPL_TTY, lmsintr, sc); 163 164 a.accessops = &lms_accessops; 165 a.accesscookie = sc; 166 167 /* 168 * Attach the wsmouse, saving a handle to it. 169 * Note that we don't need to check this pointer against NULL 170 * here or in psmintr, because if this fails lms_enable() will 171 * never be called, so lmsintr() will never be called. 172 */ 173 sc->sc_wsmousedev = config_found(self, &a, wsmousedevprint); 174 } 175 176 int 177 lms_enable(v) 178 void *v; 179 { 180 struct lms_softc *sc = v; 181 182 if (sc->sc_enabled) 183 return EBUSY; 184 185 sc->sc_enabled = 1; 186 sc->oldbuttons = 0; 187 188 /* Enable interrupts. */ 189 bus_space_write_1(sc->sc_iot, sc->sc_ioh, LMS_CNTRL, 0); 190 191 return 0; 192 } 193 194 void 195 lms_disable(v) 196 void *v; 197 { 198 struct lms_softc *sc = v; 199 200 /* Disable interrupts. */ 201 bus_space_write_1(sc->sc_iot, sc->sc_ioh, LMS_CNTRL, 0x10); 202 203 sc->sc_enabled = 0; 204 } 205 206 int 207 lms_ioctl(v, cmd, data, flag, p) 208 void *v; 209 u_long cmd; 210 caddr_t data; 211 int flag; 212 struct proc *p; 213 { 214 #if 0 215 struct lms_softc *sc = v; 216 #endif 217 218 switch (cmd) { 219 case WSMOUSEIO_GTYPE: 220 *(u_int *)data = WSMOUSE_TYPE_LMS; 221 return (0); 222 } 223 return (EPASSTHROUGH); 224 } 225 226 int 227 lmsintr(arg) 228 void *arg; 229 { 230 struct lms_softc *sc = arg; 231 bus_space_tag_t iot = sc->sc_iot; 232 bus_space_handle_t ioh = sc->sc_ioh; 233 u_char hi, lo; 234 signed char dx, dy; 235 u_int buttons; 236 int changed; 237 238 if (!sc->sc_enabled) 239 /* Interrupts are not expected. */ 240 return 0; 241 242 bus_space_write_1(iot, ioh, LMS_CNTRL, 0xab); 243 hi = bus_space_read_1(iot, ioh, LMS_DATA); 244 bus_space_write_1(iot, ioh, LMS_CNTRL, 0x90); 245 lo = bus_space_read_1(iot, ioh, LMS_DATA); 246 dx = ((hi & 0x0f) << 4) | (lo & 0x0f); 247 /* Bounding at -127 avoids a bug in XFree86. */ 248 dx = (dx == -128) ? -127 : dx; 249 250 bus_space_write_1(iot, ioh, LMS_CNTRL, 0xf0); 251 hi = bus_space_read_1(iot, ioh, LMS_DATA); 252 bus_space_write_1(iot, ioh, LMS_CNTRL, 0xd0); 253 lo = bus_space_read_1(iot, ioh, LMS_DATA); 254 dy = ((hi & 0x0f) << 4) | (lo & 0x0f); 255 dy = (dy == -128) ? 127 : -dy; 256 257 bus_space_write_1(iot, ioh, LMS_CNTRL, 0); 258 259 buttons = ((hi & 0x80) ? 0 : 0x1) | 260 ((hi & 0x40) ? 0 : 0x2) | 261 ((hi & 0x20) ? 0 : 0x4); 262 changed = (buttons ^ sc->oldbuttons); 263 sc->oldbuttons = buttons; 264 265 if (dx || dy || changed) 266 wsmouse_input(sc->sc_wsmousedev, 267 buttons, dx, dy, 0, WSMOUSE_INPUT_DELTA); 268 269 return -1; 270 } 271
Indexes created Thu Nov 06 07:09:58 GMT 2025