1 /* $NetBSD: lms.c,v 1.55 2009/05/04 12:14:31 cegger 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 1.55 2009/05/04 12:14:31 cegger 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 void *sc_ih; 51 52 bus_space_tag_t sc_iot; /* bus i/o space identifier */ 53 bus_space_handle_t sc_ioh; /* bus i/o handle */ 54 55 int sc_enabled; /* device is open */ 56 int oldbuttons; /* mouse button status */ 57 58 device_t sc_wsmousedev; 59 }; 60 61 static int lmsprobe(device_t, cfdata_t, void *); 62 static void lmsattach(device_t, device_t, void *); 63 static int lmsintr(void *); 64 65 CFATTACH_DECL_NEW(lms, sizeof(struct lms_softc), 66 lmsprobe, lmsattach, NULL, NULL); 67 68 static int lms_enable(void *); 69 static int lms_ioctl(void *, u_long, void *, int, struct lwp *); 70 static void lms_disable(void *); 71 72 static const struct wsmouse_accessops lms_accessops = { 73 lms_enable, 74 lms_ioctl, 75 lms_disable, 76 }; 77 78 static int 79 lmsprobe(device_t parent, cfdata_t match, void *aux) 80 { 81 struct isa_attach_args *ia = aux; 82 bus_space_tag_t iot = ia->ia_iot; 83 bus_space_handle_t ioh; 84 int rv; 85 86 if (ia->ia_nio < 1) 87 return (0); 88 if (ia->ia_nirq < 1) 89 return (0); 90 91 if (ISA_DIRECT_CONFIG(ia)) 92 return (0); 93 94 /* Disallow wildcarded i/o base. */ 95 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 96 return 0; 97 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 98 return 0; 99 100 /* Map the i/o space. */ 101 if (bus_space_map(iot, ia->ia_io[0].ir_addr, LMS_NPORTS, 0, &ioh)) 102 return 0; 103 104 rv = 0; 105 106 /* Configure and check for port present. */ 107 bus_space_write_1(iot, ioh, LMS_CONFIG, 0x91); 108 delay(10); 109 bus_space_write_1(iot, ioh, LMS_SIGN, 0x0c); 110 delay(10); 111 if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x0c) 112 goto out; 113 bus_space_write_1(iot, ioh, LMS_SIGN, 0x50); 114 delay(10); 115 if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x50) 116 goto out; 117 118 /* Disable interrupts. */ 119 bus_space_write_1(iot, ioh, LMS_CNTRL, 0x10); 120 121 rv = 1; 122 ia->ia_nio = 1; 123 ia->ia_io[0].ir_size = LMS_NPORTS; 124 125 ia->ia_nirq = 1; 126 127 ia->ia_niomem = 0; 128 ia->ia_ndrq = 0; 129 130 out: 131 bus_space_unmap(iot, ioh, LMS_NPORTS); 132 return rv; 133 } 134 135 static void 136 lmsattach(device_t parent, device_t self, void *aux) 137 { 138 struct lms_softc *sc = device_private(self); 139 struct isa_attach_args *ia = aux; 140 bus_space_tag_t iot = ia->ia_iot; 141 bus_space_handle_t ioh; 142 struct wsmousedev_attach_args a; 143 144 aprint_naive(": Mouse\n"); 145 aprint_normal(": Logitech Mouse\n"); 146 147 if (bus_space_map(iot, ia->ia_io[0].ir_addr, LMS_NPORTS, 0, &ioh)) { 148 aprint_error_dev(self, "can't map i/o space\n"); 149 return; 150 } 151 152 /* Other initialization was done by lmsprobe. */ 153 sc->sc_iot = iot; 154 sc->sc_ioh = ioh; 155 sc->sc_enabled = 0; 156 157 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 158 IST_PULSE, IPL_TTY, lmsintr, sc); 159 160 a.accessops = &lms_accessops; 161 a.accesscookie = sc; 162 163 /* 164 * Attach the wsmouse, saving a handle to it. 165 * Note that we don't need to check this pointer against NULL 166 * here or in psmintr, because if this fails lms_enable() will 167 * never be called, so lmsintr() will never be called. 168 */ 169 sc->sc_wsmousedev = config_found(self, &a, wsmousedevprint); 170 } 171 172 static int 173 lms_enable(void *v) 174 { 175 struct lms_softc *sc = v; 176 177 if (sc->sc_enabled) 178 return EBUSY; 179 180 sc->sc_enabled = 1; 181 sc->oldbuttons = 0; 182 183 /* Enable interrupts. */ 184 bus_space_write_1(sc->sc_iot, sc->sc_ioh, LMS_CNTRL, 0); 185 186 return 0; 187 } 188 189 static void 190 lms_disable(void *v) 191 { 192 struct lms_softc *sc = v; 193 194 /* Disable interrupts. */ 195 bus_space_write_1(sc->sc_iot, sc->sc_ioh, LMS_CNTRL, 0x10); 196 197 sc->sc_enabled = 0; 198 } 199 200 static int 201 lms_ioctl(void *v, u_long cmd, void *data, int flag, 202 struct lwp *l) 203 { 204 #if 0 205 struct lms_softc *sc = v; 206 #endif 207 208 switch (cmd) { 209 case WSMOUSEIO_GTYPE: 210 *(u_int *)data = WSMOUSE_TYPE_LMS; 211 return (0); 212 } 213 return (EPASSTHROUGH); 214 } 215 216 static int 217 lmsintr(void *arg) 218 { 219 struct lms_softc *sc = arg; 220 bus_space_tag_t iot = sc->sc_iot; 221 bus_space_handle_t ioh = sc->sc_ioh; 222 u_char hi, lo; 223 signed char dx, dy; 224 u_int buttons; 225 int changed; 226 227 if (!sc->sc_enabled) 228 /* Interrupts are not expected. */ 229 return 0; 230 231 bus_space_write_1(iot, ioh, LMS_CNTRL, 0xab); 232 hi = bus_space_read_1(iot, ioh, LMS_DATA); 233 bus_space_write_1(iot, ioh, LMS_CNTRL, 0x90); 234 lo = bus_space_read_1(iot, ioh, LMS_DATA); 235 dx = ((hi & 0x0f) << 4) | (lo & 0x0f); 236 /* Bounding at -127 avoids a bug in XFree86. */ 237 dx = (dx == -128) ? -127 : dx; 238 239 bus_space_write_1(iot, ioh, LMS_CNTRL, 0xf0); 240 hi = bus_space_read_1(iot, ioh, LMS_DATA); 241 bus_space_write_1(iot, ioh, LMS_CNTRL, 0xd0); 242 lo = bus_space_read_1(iot, ioh, LMS_DATA); 243 dy = ((hi & 0x0f) << 4) | (lo & 0x0f); 244 dy = (dy == -128) ? 127 : -dy; 245 246 bus_space_write_1(iot, ioh, LMS_CNTRL, 0); 247 248 buttons = ((hi & 0x80) ? 0 : 0x1) | 249 ((hi & 0x40) ? 0 : 0x2) | 250 ((hi & 0x20) ? 0 : 0x4); 251 changed = (buttons ^ sc->oldbuttons); 252 sc->oldbuttons = buttons; 253 254 if (dx || dy || changed) 255 wsmouse_input(sc->sc_wsmousedev, 256 buttons, 257 dx, dy, 0, 0, 258 WSMOUSE_INPUT_DELTA); 259 260 return -1; 261 } 262