| 1 | /* |
| 2 | * Copyright (c) 2001 M. Warner Losh |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions, and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR |
| 18 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 24 | * SUCH DAMAGE. |
| 25 | * |
| 26 | * This code is based on ugen.c and ulpt.c developed by Lennart Augustsson. |
| 27 | * This code includes software developed by the NetBSD Foundation, Inc. and |
| 28 | * its contributors. |
| 29 | */ |
| 30 | |
| 31 | /* |
| 32 | * $FreeBSD: src/sys/dev/usb/ufm.c,v 1.16 2003/10/04 21:41:01 joe Exp $ |
| 33 | * $DragonFly: src/sys/dev/usbmisc/ufm/ufm.c,v 1.24 2008/08/14 20:55:53 hasso Exp $ |
| 34 | */ |
| 35 | |
| 36 | #include <sys/param.h> |
| 37 | #include <sys/systm.h> |
| 38 | #include <sys/kernel.h> |
| 39 | #include <sys/malloc.h> |
| 40 | #include <sys/module.h> |
| 41 | #include <sys/bus.h> |
| 42 | #include <sys/fcntl.h> |
| 43 | #include <sys/filio.h> |
| 44 | #include <sys/conf.h> |
| 45 | #include <sys/uio.h> |
| 46 | #include <sys/tty.h> |
| 47 | #include <sys/file.h> |
| 48 | #include <sys/select.h> |
| 49 | #include <sys/poll.h> |
| 50 | #include <sys/sysctl.h> |
| 51 | #include <sys/thread2.h> |
| 52 | |
| 53 | #include <bus/usb/usb.h> |
| 54 | #include <bus/usb/usbdi.h> |
| 55 | #include <bus/usb/usbdi_util.h> |
| 56 | |
| 57 | #include <bus/usb/dsbr100io.h> |
| 58 | |
| 59 | #ifdef USB_DEBUG |
| 60 | #define DPRINTF(x) if (ufmdebug) kprintf x |
| 61 | #define DPRINTFN(n,x) if (ufmdebug>(n)) kprintf x |
| 62 | int ufmdebug = 0; |
| 63 | SYSCTL_NODE(_hw_usb, OID_AUTO, ufm, CTLFLAG_RW, 0, "USB ufm"); |
| 64 | SYSCTL_INT(_hw_usb_ufm, OID_AUTO, debug, CTLFLAG_RW, |
| 65 | &ufmdebug, 0, "ufm debug level"); |
| 66 | #else |
| 67 | #define DPRINTF(x) |
| 68 | #define DPRINTFN(n,x) |
| 69 | #endif |
| 70 | |
| 71 | d_open_t ufmopen; |
| 72 | d_close_t ufmclose; |
| 73 | d_ioctl_t ufmioctl; |
| 74 | |
| 75 | #define UFM_CDEV_MAJOR 200 |
| 76 | |
| 77 | static struct dev_ops ufm_ops = { |
| 78 | { "ufm", UFM_CDEV_MAJOR, 0 }, |
| 79 | .d_open = ufmopen, |
| 80 | .d_close = ufmclose, |
| 81 | .d_ioctl = ufmioctl, |
| 82 | }; |
| 83 | |
| 84 | #define FM_CMD0 0x00 |
| 85 | #define FM_CMD_SET_FREQ 0x01 |
| 86 | #define FM_CMD2 0x02 |
| 87 | |
| 88 | struct ufm_softc { |
| 89 | device_t sc_dev; |
| 90 | usbd_device_handle sc_udev; |
| 91 | usbd_interface_handle sc_iface; |
| 92 | |
| 93 | int sc_opened; |
| 94 | int sc_epaddr; |
| 95 | int sc_freq; |
| 96 | |
| 97 | int sc_refcnt; |
| 98 | }; |
| 99 | |
| 100 | #define UFMUNIT(n) (minor(n)) |
| 101 | |
| 102 | static device_probe_t ufm_match; |
| 103 | static device_attach_t ufm_attach; |
| 104 | static device_detach_t ufm_detach; |
| 105 | |
| 106 | static devclass_t ufm_devclass; |
| 107 | |
| 108 | static kobj_method_t ufm_methods[] = { |
| 109 | DEVMETHOD(device_probe, ufm_match), |
| 110 | DEVMETHOD(device_attach, ufm_attach), |
| 111 | DEVMETHOD(device_detach, ufm_detach), |
| 112 | {0,0} |
| 113 | }; |
| 114 | |
| 115 | static driver_t ufm_driver = { |
| 116 | "ufm", |
| 117 | ufm_methods, |
| 118 | sizeof(struct ufm_softc) |
| 119 | }; |
| 120 | |
| 121 | MODULE_DEPEND(ufm, usb, 1, 1, 1); |
| 122 | |
| 123 | static int |
| 124 | ufm_match(device_t self) |
| 125 | { |
| 126 | struct usb_attach_arg *uaa = device_get_ivars(self); |
| 127 | usb_device_descriptor_t *dd; |
| 128 | |
| 129 | DPRINTFN(10,("ufm_match\n")); |
| 130 | if (!uaa->iface) |
| 131 | return UMATCH_NONE; |
| 132 | |
| 133 | dd = usbd_get_device_descriptor(uaa->device); |
| 134 | |
| 135 | if (dd && |
| 136 | ((UGETW(dd->idVendor) == 0x04b4 && UGETW(dd->idProduct) == 0x1002))) |
| 137 | return UMATCH_VENDOR_PRODUCT; |
| 138 | else |
| 139 | return UMATCH_NONE; |
| 140 | } |
| 141 | |
| 142 | static int |
| 143 | ufm_attach(device_t self) |
| 144 | { |
| 145 | struct ufm_softc *sc = device_get_softc(self); |
| 146 | struct usb_attach_arg *uaa = device_get_ivars(self); |
| 147 | usb_endpoint_descriptor_t *edesc; |
| 148 | usbd_interface_handle iface; |
| 149 | u_int8_t epcount; |
| 150 | usbd_status r; |
| 151 | char * ermsg = "<none>"; |
| 152 | |
| 153 | DPRINTFN(10,("ufm_attach: sc=%p\n", sc)); |
| 154 | sc->sc_dev = self; |
| 155 | sc->sc_udev = uaa->device; |
| 156 | |
| 157 | if ((!uaa->device) || (!uaa->iface)) { |
| 158 | ermsg = "device or iface"; |
| 159 | goto nobulk; |
| 160 | } |
| 161 | sc->sc_iface = iface = uaa->iface; |
| 162 | sc->sc_opened = 0; |
| 163 | sc->sc_refcnt = 0; |
| 164 | |
| 165 | r = usbd_endpoint_count(iface, &epcount); |
| 166 | if (r != USBD_NORMAL_COMPLETION) { |
| 167 | ermsg = "endpoints"; |
| 168 | goto nobulk; |
| 169 | } |
| 170 | |
| 171 | edesc = usbd_interface2endpoint_descriptor(iface, 0); |
| 172 | if (!edesc) { |
| 173 | ermsg = "interface endpoint"; |
| 174 | goto nobulk; |
| 175 | } |
| 176 | sc->sc_epaddr = edesc->bEndpointAddress; |
| 177 | |
| 178 | /* XXX no error trapping, no storing of cdev_t */ |
| 179 | make_dev(&ufm_ops, device_get_unit(self), |
| 180 | UID_ROOT, GID_OPERATOR, |
| 181 | 0644, "ufm%d", device_get_unit(self)); |
| 182 | |
| 183 | DPRINTFN(10, ("ufm_attach: %p\n", sc->sc_udev)); |
| 184 | |
| 185 | return 0; |
| 186 | |
| 187 | nobulk: |
| 188 | kprintf("%s: could not find %s\n", device_get_nameunit(sc->sc_dev),ermsg); |
| 189 | return ENXIO; |
| 190 | } |
| 191 | |
| 192 | |
| 193 | int |
| 194 | ufmopen(struct dev_open_args *ap) |
| 195 | { |
| 196 | cdev_t dev = ap->a_head.a_dev; |
| 197 | struct ufm_softc *sc; |
| 198 | |
| 199 | int unit = UFMUNIT(dev); |
| 200 | sc = devclass_get_softc(ufm_devclass, unit); |
| 201 | if (sc == NULL) |
| 202 | return (ENXIO); |
| 203 | |
| 204 | DPRINTFN(5, ("ufmopen: flag=%d, mode=%d, unit=%d\n", |
| 205 | ap->a_oflags, ap->a_devtype, unit)); |
| 206 | |
| 207 | if (sc->sc_opened) |
| 208 | return (EBUSY); |
| 209 | |
| 210 | if ((ap->a_oflags & (FWRITE|FREAD)) != (FWRITE|FREAD)) |
| 211 | return (EACCES); |
| 212 | |
| 213 | sc->sc_opened = 1; |
| 214 | return (0); |
| 215 | } |
| 216 | |
| 217 | int |
| 218 | ufmclose(struct dev_close_args *ap) |
| 219 | { |
| 220 | cdev_t dev = ap->a_head.a_dev; |
| 221 | struct ufm_softc *sc; |
| 222 | |
| 223 | int unit = UFMUNIT(dev); |
| 224 | sc = devclass_get_softc(ufm_devclass, unit); |
| 225 | |
| 226 | DPRINTFN(5, ("ufmclose: flag=%d, mode=%d, unit=%d\n", |
| 227 | ap->a_fflag, ap->a_devtype, unit)); |
| 228 | sc->sc_opened = 0; |
| 229 | sc->sc_refcnt = 0; |
| 230 | return 0; |
| 231 | } |
| 232 | |
| 233 | static int |
| 234 | ufm_do_req(struct ufm_softc *sc, u_int8_t reqtype, u_int8_t request, |
| 235 | u_int16_t value, u_int16_t index, u_int8_t len, void *retbuf) |
| 236 | { |
| 237 | usb_device_request_t req; |
| 238 | usbd_status err; |
| 239 | |
| 240 | crit_enter(); |
| 241 | req.bmRequestType = reqtype; |
| 242 | req.bRequest = request; |
| 243 | USETW(req.wValue, value); |
| 244 | USETW(req.wIndex, index); |
| 245 | USETW(req.wLength, len); |
| 246 | err = usbd_do_request_flags(sc->sc_udev, &req, retbuf, 0, NULL, |
| 247 | USBD_DEFAULT_TIMEOUT); |
| 248 | crit_exit(); |
| 249 | if (err) { |
| 250 | kprintf("usbd_do_request_flags returned %#x\n", err); |
| 251 | return (EIO); |
| 252 | } |
| 253 | return (0); |
| 254 | } |
| 255 | |
| 256 | static int |
| 257 | ufm_set_freq(struct ufm_softc *sc, caddr_t addr) |
| 258 | { |
| 259 | int freq = *(int *)addr; |
| 260 | u_int8_t ret; |
| 261 | |
| 262 | /* |
| 263 | * Freq now is in Hz. We need to convert it to the frequency |
| 264 | * that the radio wants. This frequency is 10.7MHz above |
| 265 | * the actual frequency. We then need to convert to |
| 266 | * units of 12.5kHz. We add one to the IFM to make rounding |
| 267 | * easier. |
| 268 | */ |
| 269 | sc->sc_freq = freq; |
| 270 | freq = (freq + 10700001) / 12500; |
| 271 | /* This appears to set the frequency */ |
| 272 | if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD_SET_FREQ, freq >> 8, |
| 273 | freq, 1, &ret) != 0) |
| 274 | return (EIO); |
| 275 | /* Not sure what this does */ |
| 276 | if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD0, 0x96, 0xb7, 1, |
| 277 | &ret) != 0) |
| 278 | return (EIO); |
| 279 | return (0); |
| 280 | } |
| 281 | |
| 282 | static int |
| 283 | ufm_get_freq(struct ufm_softc *sc, caddr_t addr) |
| 284 | { |
| 285 | int *valp = (int *)addr; |
| 286 | *valp = sc->sc_freq; |
| 287 | return (0); |
| 288 | } |
| 289 | |
| 290 | static int |
| 291 | ufm_start(struct ufm_softc *sc, caddr_t addr) |
| 292 | { |
| 293 | u_int8_t ret; |
| 294 | |
| 295 | if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD0, 0x00, 0xc7, |
| 296 | 1, &ret)) |
| 297 | return (EIO); |
| 298 | if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD2, 0x01, 0x00, |
| 299 | 1, &ret)) |
| 300 | return (EIO); |
| 301 | if (ret & 0x1) |
| 302 | return (EIO); |
| 303 | return (0); |
| 304 | } |
| 305 | |
| 306 | static int |
| 307 | ufm_stop(struct ufm_softc *sc, caddr_t addr) |
| 308 | { |
| 309 | u_int8_t ret; |
| 310 | |
| 311 | if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD0, 0x16, 0x1C, |
| 312 | 1, &ret)) |
| 313 | return (EIO); |
| 314 | if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD2, 0x00, 0x00, |
| 315 | 1, &ret)) |
| 316 | return (EIO); |
| 317 | return (0); |
| 318 | } |
| 319 | |
| 320 | static int |
| 321 | ufm_get_stat(struct ufm_softc *sc, caddr_t addr) |
| 322 | { |
| 323 | u_int8_t ret; |
| 324 | |
| 325 | /* |
| 326 | * Note, there's a 240ms settle time before the status |
| 327 | * will be valid, so tsleep that amount. hz/4 is a good |
| 328 | * approximation of that. Since this is a short sleep |
| 329 | * we don't try to catch any signals to keep things |
| 330 | * simple. |
| 331 | */ |
| 332 | tsleep(sc, 0, "ufmwait", hz/4); |
| 333 | if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD0, 0x00, 0x24, |
| 334 | 1, &ret)) |
| 335 | return (EIO); |
| 336 | *(int *)addr = ret; |
| 337 | |
| 338 | return (0); |
| 339 | } |
| 340 | |
| 341 | int |
| 342 | ufmioctl(struct dev_ioctl_args *ap) |
| 343 | { |
| 344 | cdev_t dev = ap->a_head.a_dev; |
| 345 | caddr_t addr = ap->a_data; |
| 346 | struct ufm_softc *sc; |
| 347 | |
| 348 | int unit = UFMUNIT(dev); |
| 349 | int error = 0; |
| 350 | |
| 351 | sc = devclass_get_softc(ufm_devclass, unit); |
| 352 | |
| 353 | switch (ap->a_cmd) { |
| 354 | case FM_SET_FREQ: |
| 355 | error = ufm_set_freq(sc, addr); |
| 356 | break; |
| 357 | case FM_GET_FREQ: |
| 358 | error = ufm_get_freq(sc, addr); |
| 359 | break; |
| 360 | case FM_START: |
| 361 | error = ufm_start(sc, addr); |
| 362 | break; |
| 363 | case FM_STOP: |
| 364 | error = ufm_stop(sc, addr); |
| 365 | break; |
| 366 | case FM_GET_STAT: |
| 367 | error = ufm_get_stat(sc, addr); |
| 368 | break; |
| 369 | default: |
| 370 | return ENOTTY; |
| 371 | break; |
| 372 | } |
| 373 | return error; |
| 374 | } |
| 375 | |
| 376 | static int |
| 377 | ufm_detach(device_t self) |
| 378 | { |
| 379 | DPRINTF(("%s: disconnected\n", device_get_nameunit(self))); |
| 380 | return 0; |
| 381 | } |
| 382 | |
| 383 | DRIVER_MODULE(ufm, uhub, ufm_driver, ufm_devclass, usbd_driver_load, 0); |