/* $NetBSD: ubt.c,v 1.6 2003/01/11 06:16:05 dsainty Exp $ */ /* * Copyright (c) 2002, 2003 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Lennart Augustsson (lennart@augustsson.net) and * David Sainty (David.Sainty@dtsp.co.nz). * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: ubt.c,v 1.6 2003/01/11 06:16:05 dsainty Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef UBT_DEBUG #define DPRINTF(x) if (ubtdebug) logprintf x #define DPRINTFN(n,x) if (ubtdebug>(n)) logprintf x int ubtdebug = 99; #else #define DPRINTF(x) #define DPRINTFN(n,x) #endif /* * Protocol related definitions */ struct ubt_softc { USBBASEDEVICE sc_dev; usbd_device_handle sc_udev; usbd_interface_handle sc_ctl_iface; usbd_interface_handle sc_isoc_iface; /* Control */ usbd_pipe_handle sc_ctl_pipe; usbd_xfer_handle sc_ctl_xfer; u_int8_t *sc_ctl_buf; /* Events */ int sc_evt_addr; usbd_pipe_handle sc_evt_pipe; usbd_xfer_handle sc_evt_xfer; u_int8_t *sc_evt_buf; /* ACL data (in) */ int sc_aclrd_addr; usbd_pipe_handle sc_aclrd_pipe; usbd_xfer_handle sc_aclrd_xfer; u_int8_t *sc_aclrd_buf; int sc_aclrd_running; /* ACL data (out) */ int sc_aclwr_addr; usbd_pipe_handle sc_aclwr_pipe; usbd_xfer_handle sc_aclwr_xfer; u_int8_t *sc_aclwr_buf; struct device *sc_child; struct btframe_callback_methods const *sc_cb; unsigned int sc_blocked; int sc_refcnt; char sc_dying; }; static int ubt_open(void *h, int flag, int mode, usb_proc_ptr p); static int ubt_close(void *h, int flag, int mode, usb_proc_ptr p); static u_int8_t* ubt_alloc_control(void*, size_t, struct btframe_buffer**); static int ubt_send_control(void*, struct btframe_buffer*, size_t); static u_int8_t* ubt_alloc_acldata(void*, size_t, struct btframe_buffer**); static int ubt_send_acldata(void*, struct btframe_buffer*, size_t); static u_int8_t* ubt_alloc_scodata(void*, size_t, struct btframe_buffer**); static int ubt_send_scodata(void*, struct btframe_buffer*, size_t); static int ubt_splraise(void); static unsigned int ubt_blockcb(void *h, unsigned int cbblocks); static unsigned int ubt_unblockcb(void *h, unsigned int cbblocks); static void ubt_event_cb(usbd_xfer_handle, usbd_private_handle, usbd_status); static void ubt_aclrd_cb(usbd_xfer_handle, usbd_private_handle, usbd_status); static void ubt_aclrd_request(struct ubt_softc *); static struct btframe_methods const ubt_methods = { ubt_open, ubt_close, {ubt_alloc_control, ubt_send_control}, {ubt_alloc_acldata, ubt_send_acldata}, {ubt_alloc_scodata, ubt_send_scodata}, ubt_splraise, ubt_blockcb, ubt_unblockcb }; USB_DECLARE_DRIVER(ubt); USB_MATCH(ubt) { USB_MATCH_START(ubt, uaa); usb_interface_descriptor_t *id; DPRINTFN(50,("ubt_match\n")); if (uaa->iface == NULL) return (UMATCH_NONE); id = usbd_get_interface_descriptor(uaa->iface); if (id != NULL && id->bInterfaceClass == UICLASS_WIRELESS && id->bInterfaceSubClass == UISUBCLASS_RF && id->bInterfaceProtocol == UIPROTO_BLUETOOTH) return (UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO); return (UMATCH_NONE); } USB_ATTACH(ubt) { USB_ATTACH_START(ubt, sc, uaa); usbd_device_handle dev = uaa->device; usbd_interface_handle iface = uaa->iface; struct bt_attach_args bt; usb_interface_descriptor_t const *id; char devinfo[1024]; usb_endpoint_descriptor_t const *ed; u_int8_t epcount; int i; DPRINTFN(10,("ubt_attach: sc=%p\n", sc)); usbd_devinfo(dev, 0, devinfo); USB_ATTACH_SETUP; printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfo); sc->sc_udev = dev; sc->sc_ctl_iface = iface; /* * The control interface comes before the isoc interface * according to the spec, so we find it first. */ epcount = 0; (void)usbd_endpoint_count(iface, &epcount); sc->sc_evt_addr = -1; sc->sc_aclrd_addr = -1; sc->sc_aclwr_addr = -1; for (i = 0; i < epcount; i++) { ed = usbd_interface2endpoint_descriptor(iface, i); if (ed == NULL) { printf("%s: couldn't get ep %d\n", USBDEVNAME(sc->sc_dev), i); USB_ATTACH_ERROR_RETURN; } DPRINTFN(10, ("%s: addr=%d attr=%d\n", __func__, (int)ed->bEndpointAddress, (int)ed->bmAttributes)); if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { sc->sc_evt_addr = ed->bEndpointAddress; } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { sc->sc_aclrd_addr = ed->bEndpointAddress; } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { sc->sc_aclwr_addr = ed->bEndpointAddress; } } if (sc->sc_evt_addr == -1 || sc->sc_aclrd_addr == -1 || sc->sc_aclwr_addr == -1) { printf("%s: missing endpoint\n", USBDEVNAME(sc->sc_dev)); USB_ATTACH_ERROR_RETURN; } /* XXX works because isoc comes after ctl */ /* Grab isoc interface as well. */ for (i = 0; i < uaa->nifaces; i++) { if (uaa->ifaces[i] == NULL) continue; id = usbd_get_interface_descriptor(uaa->ifaces[i]); if (id != NULL && id->bInterfaceClass == UICLASS_WIRELESS && id->bInterfaceSubClass == UISUBCLASS_RF && id->bInterfaceProtocol == UIPROTO_BLUETOOTH) { sc->sc_isoc_iface = uaa->ifaces[i]; uaa->ifaces[i] = NULL; } } printf("%s: has%s isoc data\n", USBDEVNAME(sc->sc_dev), sc->sc_isoc_iface != NULL ? "" : " no"); usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, USBDEV(sc->sc_dev)); bt.bt_methods = &ubt_methods; bt.bt_cb = &sc->sc_cb; sc->sc_child = config_found(self, &bt, bt_print); USB_ATTACH_SUCCESS_RETURN; } static void ubt_abortdealloc(struct ubt_softc *sc) { DPRINTFN(0, ("%s: sc=%p\n", __func__, sc)); if (sc->sc_evt_pipe != NULL) { usbd_abort_pipe(sc->sc_evt_pipe); usbd_close_pipe(sc->sc_evt_pipe); sc->sc_evt_pipe = NULL; } if (sc->sc_evt_buf != NULL) { free(sc->sc_evt_buf, M_USBDEV); sc->sc_evt_buf = NULL; } if (sc->sc_aclrd_pipe != NULL) { usbd_abort_pipe(sc->sc_aclrd_pipe); usbd_close_pipe(sc->sc_aclrd_pipe); sc->sc_aclrd_pipe = NULL; } if (sc->sc_aclwr_pipe != NULL) { usbd_abort_pipe(sc->sc_aclwr_pipe); usbd_close_pipe(sc->sc_aclwr_pipe); sc->sc_aclwr_pipe = NULL; } if (sc->sc_aclrd_xfer != NULL) { usbd_free_xfer(sc->sc_aclrd_xfer); sc->sc_aclrd_xfer = NULL; sc->sc_aclrd_buf = NULL; } if (sc->sc_aclwr_xfer != NULL) { usbd_free_xfer(sc->sc_aclwr_xfer); sc->sc_aclwr_xfer = NULL; sc->sc_aclwr_buf = NULL; } } USB_DETACH(ubt) { USB_DETACH_START(ubt, sc); int s; int rv = 0; DPRINTF(("%s: sc=%p flags=%d\n", __func__, sc, flags)); sc->sc_dying = 1; /* Abort all pipes. Causes processes waiting for transfer to wake. */ ubt_abortdealloc(sc); DPRINTFN(1, ("%s: waiting for USB detach\n", __func__)); s = splusb(); if (--sc->sc_refcnt >= 0) { /* Wait for processes to go away. */ usb_detach_wait(USBDEV(sc->sc_dev)); } splx(s); DPRINTFN(1, ("%s: USB detach complete\n", __func__)); if (sc->sc_child != NULL) { DPRINTFN(1, ("%s: waiting for child detach\n", __func__)); rv = config_detach(sc->sc_child, flags); sc->sc_child = NULL; DPRINTFN(1, ("%s: child detach complete\n", __func__)); } usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, USBDEV(sc->sc_dev)); DPRINTFN(1, ("%s: driver detached\n", __func__)); return (rv); } int ubt_activate(device_ptr_t self, enum devact act) { struct ubt_softc *sc = (struct ubt_softc *)self; int error = 0; switch (act) { case DVACT_ACTIVATE: return (EOPNOTSUPP); break; case DVACT_DEACTIVATE: sc->sc_dying = 1; if (sc->sc_child != NULL) error = config_deactivate(sc->sc_child); break; } return (error); } static int ubt_open(void *h, int flag, int mode, usb_proc_ptr p) { struct ubt_softc *sc = h; int error; usbd_status err; DPRINTFN(0, ("%s: sc=%p\n", __func__, sc)); sc->sc_evt_buf = malloc(BTHCI_EVENT_MAX_LEN, M_USBDEV, M_NOWAIT); if (sc->sc_evt_buf == NULL) { error = ENOMEM; goto bad0; } err = usbd_open_pipe_intr(sc->sc_ctl_iface, sc->sc_evt_addr, USBD_SHORT_XFER_OK, &sc->sc_evt_pipe, sc, sc->sc_evt_buf, BTHCI_EVENT_MAX_LEN, ubt_event_cb, UBT_EVENT_EP_INTERVAL); if (err != USBD_NORMAL_COMPLETION) { error = EIO; goto bad1; } err = usbd_open_pipe(sc->sc_ctl_iface, sc->sc_aclrd_addr, 0, &sc->sc_aclrd_pipe); if (err != USBD_NORMAL_COMPLETION) { error = EIO; goto bad2; } err = usbd_open_pipe(sc->sc_ctl_iface, sc->sc_aclwr_addr, 0, &sc->sc_aclwr_pipe); if (err != USBD_NORMAL_COMPLETION) { error = EIO; goto bad3; } sc->sc_ctl_xfer = usbd_alloc_xfer(sc->sc_udev); if (sc->sc_ctl_xfer == NULL) { error = ENOMEM; goto bad4; } sc->sc_aclrd_xfer = usbd_alloc_xfer(sc->sc_udev); if (sc->sc_aclrd_xfer == NULL) { error = ENOMEM; goto bad5; } sc->sc_aclwr_xfer = usbd_alloc_xfer(sc->sc_udev); if (sc->sc_aclwr_xfer == NULL) { error = ENOMEM; goto bad6; } /* Buffers */ sc->sc_ctl_buf = usbd_alloc_buffer(sc->sc_ctl_xfer, BTHCI_COMMAND_MAX_LEN); if (sc->sc_ctl_buf == NULL) { error = ENOMEM; goto bad7; } sc->sc_aclrd_buf = usbd_alloc_buffer(sc->sc_aclrd_xfer, BTHCI_ACL_DATA_MAX_LEN); if (sc->sc_aclrd_buf == NULL) { error = ENOMEM; goto bad7; } sc->sc_aclwr_buf = usbd_alloc_buffer(sc->sc_aclwr_xfer, BTHCI_ACL_DATA_MAX_LEN); if (sc->sc_aclwr_buf == NULL) { error = ENOMEM; goto bad7; } /* Start reading */ ubt_aclrd_request(sc); return 0; bad7: usbd_free_xfer(sc->sc_aclwr_xfer); sc->sc_aclwr_xfer = NULL; bad6: usbd_free_xfer(sc->sc_aclrd_xfer); sc->sc_aclrd_xfer = NULL; bad5: usbd_free_xfer(sc->sc_ctl_xfer); sc->sc_ctl_xfer = NULL; bad4: usbd_close_pipe(sc->sc_aclwr_pipe); sc->sc_aclwr_pipe = NULL; bad3: usbd_close_pipe(sc->sc_aclrd_pipe); sc->sc_aclrd_pipe = NULL; bad2: usbd_close_pipe(sc->sc_evt_pipe); sc->sc_evt_pipe = NULL; bad1: free(sc->sc_evt_buf, M_USBDEV); sc->sc_evt_buf = NULL; bad0: return error; } static int ubt_close(void *h, int flag, int mode, usb_proc_ptr p) { struct ubt_softc *sc = h; DPRINTFN(0, ("%s: sc=%p\n", __func__, sc)); ubt_abortdealloc(sc); return 0; } static u_int8_t* ubt_alloc_control(void *h, size_t len, struct btframe_buffer **buf) { struct ubt_softc *sc = h; /* * We should be catching this earlier, but at the moment a * user request can generate oversized allocations. */ if (len > BTHCI_COMMAND_MAX_LEN) return NULL; *buf = (struct btframe_buffer*)sc->sc_ctl_buf; return sc->sc_ctl_buf; } static int ubt_send_control(void *h, struct btframe_buffer *buf, size_t len) { struct ubt_softc *sc = h; usb_device_request_t req; usbd_status status; DPRINTFN(1,("%s: sc=%p\n", __func__, sc)); #ifdef DIAGNOSTIC if ((u_int8_t*)buf != sc->sc_ctl_buf) panic("ubt_control() called with wrong buffer"); #endif if (sc->sc_dying) return EIO; if (len < BTHCI_COMMAND_MIN_LEN || len > BTHCI_COMMAND_MAX_LEN) return EINVAL; sc->sc_refcnt++; memset(&req, 0, sizeof(req)); req.bmRequestType = UT_WRITE_CLASS_DEVICE; USETW(req.wLength, len); usbd_setup_default_xfer(sc->sc_ctl_xfer, sc->sc_udev, sc, USBD_DEFAULT_TIMEOUT, &req, sc->sc_ctl_buf, len, USBD_SYNCHRONOUS | USBD_NO_COPY, NULL); status = usbd_transfer(sc->sc_ctl_xfer); if (--sc->sc_refcnt < 0) usb_detach_wakeup(USBDEV(sc->sc_dev)); if (status != USBD_NORMAL_COMPLETION) return EIO; return 0; } static u_int8_t* ubt_alloc_acldata(void *h, size_t len, struct btframe_buffer **buf) { struct ubt_softc *sc = h; /* * We should be catching this earlier, but at the moment a * user request can generate oversized allocations. */ if (len > BTHCI_ACL_DATA_MAX_LEN) return NULL; *buf = (struct btframe_buffer*)sc->sc_aclwr_buf; return sc->sc_aclwr_buf; } static int ubt_send_acldata(void *h, struct btframe_buffer *buf, size_t len) { struct ubt_softc *sc = h; usbd_status status; DPRINTFN(1,("%s: sc=%p\n", __func__, sc)); #ifdef DIAGNOSTIC if ((u_int8_t*)buf != sc->sc_aclwr_buf) panic("ubt_sendacldata() called with wrong buffer"); #endif if (sc->sc_dying) return EIO; if (len < BTHCI_ACL_DATA_MIN_LEN || len > BTHCI_ACL_DATA_MAX_LEN) return EINVAL; sc->sc_refcnt++; usbd_setup_xfer(sc->sc_aclwr_xfer, sc->sc_aclwr_pipe, (usbd_private_handle)sc, sc->sc_aclwr_buf, len, USBD_SYNCHRONOUS | USBD_NO_COPY, USBD_DEFAULT_TIMEOUT, NULL); status = usbd_transfer(sc->sc_aclwr_xfer); if (--sc->sc_refcnt < 0) usb_detach_wakeup(USBDEV(sc->sc_dev)); if (status != USBD_NORMAL_COMPLETION) return EIO; return 0; } static u_int8_t* ubt_alloc_scodata(void *h, size_t len, struct btframe_buffer **buf) { return NULL; } static int ubt_send_scodata(void *h, struct btframe_buffer *buf, size_t len) { struct ubt_softc *sc = h; DPRINTFN(1,("%s: sc=%p\n", __func__, sc)); if (sc->sc_dying) return EIO; return ENXIO; } static void ubt_event_cb(usbd_xfer_handle xfer, usbd_private_handle h, usbd_status status) { struct ubt_softc *sc = h; void *buf; u_int32_t size; DPRINTFN(1,("%s: sc=%p status=%s\n", __func__, sc, usbd_errstr(status))); if (status != USBD_NORMAL_COMPLETION || sc->sc_dying || sc->sc_child == NULL) return; usbd_get_xfer_status(xfer, NULL, &buf, &size, NULL); sc->sc_cb->bt_recveventdata(sc->sc_child, buf, (size_t)size); } static void ubt_aclrd_request(struct ubt_softc *sc) { usbd_status status; int s; DPRINTFN(1,("%s: sc=%p\n", __func__, sc)); if (sc->sc_dying) return; s = splusb(); if (sc->sc_aclrd_running) { splx(s); return; } sc->sc_aclrd_running = 1; splx(s); usbd_setup_xfer(sc->sc_aclrd_xfer, sc->sc_aclrd_pipe, sc, sc->sc_aclrd_buf, BTHCI_ACL_DATA_MAX_LEN, USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, ubt_aclrd_cb); status = usbd_transfer(sc->sc_aclrd_xfer); if (status == USBD_IN_PROGRESS || USBD_CANCELLED) return; DPRINTFN(1,("%s: read request failed: %s\n", __func__, usbd_errstr(status))); sc->sc_aclrd_running = 0; sc->sc_blocked |= BT_CBBLOCK_ACL_DATA; } static void ubt_aclrd_cb(usbd_xfer_handle xfer, usbd_private_handle h, usbd_status status) { struct ubt_softc *sc = h; void *buf; u_int32_t size; DPRINTFN(1,("%s: sc=%p status=%s\n", __func__, sc, usbd_errstr(status))); sc->sc_aclrd_running = 0; if (status != USBD_NORMAL_COMPLETION || sc->sc_dying || sc->sc_child == NULL) return; usbd_get_xfer_status(xfer, NULL, &buf, &size, NULL); sc->sc_cb->bt_recvacldata(sc->sc_child, buf, (size_t)size); /* Re-issue the request if not blocked */ if (!sc->sc_dying && !(sc->sc_blocked & BT_CBBLOCK_ACL_DATA)) ubt_aclrd_request(sc); } static unsigned int ubt_blockcb(void *h, unsigned int cbblocks) { struct ubt_softc *sc = h; sc->sc_blocked |= (cbblocks & BT_CBBLOCK_ACL_DATA); return sc->sc_blocked; } static unsigned int ubt_unblockcb(void *h, unsigned int cbblocks) { struct ubt_softc *sc = h; unsigned int oblocks, changes; oblocks = sc->sc_blocked; sc->sc_blocked = oblocks & ~cbblocks; changes = oblocks & cbblocks; if (changes & BT_CBBLOCK_ACL_DATA) /* Re-issue the request if action un-blocked reads */ ubt_aclrd_request(sc); return sc->sc_blocked; } static int ubt_splraise(void) { return splusb(); }