/* $FreeBSD$ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. All rights reserved. * Copyright (c) 1998 Lennart Augustsson. All rights reserved. * Copyright (c) 2008 Hans Petter Selasky. All rights reserved. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define USB_DEBUG_VAR usb_debug #include #include #include #include #include #include #include #include #include #include #include #include #ifdef USB_DEBUG static int usb_pr_poll_delay = USB_PORT_RESET_DELAY; static int usb_pr_recovery_delay = USB_PORT_RESET_RECOVERY; static int usb_ss_delay = 0; SYSCTL_INT(_hw_usb, OID_AUTO, pr_poll_delay, CTLFLAG_RW, &usb_pr_poll_delay, 0, "USB port reset poll delay in ms"); SYSCTL_INT(_hw_usb, OID_AUTO, pr_recovery_delay, CTLFLAG_RW, &usb_pr_recovery_delay, 0, "USB port reset recovery delay in ms"); SYSCTL_INT(_hw_usb, OID_AUTO, ss_delay, CTLFLAG_RW, &usb_ss_delay, 0, "USB status stage delay in ms"); #endif /*------------------------------------------------------------------------* * usbd_do_request_callback * * This function is the USB callback for generic USB Host control * transfers. *------------------------------------------------------------------------*/ void usbd_do_request_callback(struct usb_xfer *xfer, usb_error_t error) { ; /* workaround for a bug in "indent" */ DPRINTF("st=%u\n", USB_GET_STATE(xfer)); switch (USB_GET_STATE(xfer)) { case USB_ST_SETUP: usbd_transfer_submit(xfer); break; default: cv_signal(&xfer->xroot->udev->ctrlreq_cv); break; } } /*------------------------------------------------------------------------* * usb_do_clear_stall_callback * * This function is the USB callback for generic clear stall requests. *------------------------------------------------------------------------*/ void usb_do_clear_stall_callback(struct usb_xfer *xfer, usb_error_t error) { struct usb_device_request req; struct usb_device *udev; struct usb_endpoint *ep; struct usb_endpoint *ep_end; struct usb_endpoint *ep_first; uint8_t to; udev = xfer->xroot->udev; USB_BUS_LOCK(udev->bus); /* round robin endpoint clear stall */ ep = udev->ep_curr; ep_end = udev->endpoints + udev->endpoints_max; ep_first = udev->endpoints; to = udev->endpoints_max; switch (USB_GET_STATE(xfer)) { case USB_ST_TRANSFERRED: if (ep == NULL) goto tr_setup; /* device was unconfigured */ if (ep->edesc && ep->is_stalled) { ep->toggle_next = 0; ep->is_stalled = 0; /* start up the current or next transfer, if any */ usb_command_wrapper(&ep->endpoint_q, ep->endpoint_q.curr); } ep++; case USB_ST_SETUP: tr_setup: if (to == 0) break; /* no endpoints - nothing to do */ if ((ep < ep_first) || (ep >= ep_end)) ep = ep_first; /* endpoint wrapped around */ if (ep->edesc && ep->is_stalled) { /* setup a clear-stall packet */ req.bmRequestType = UT_WRITE_ENDPOINT; req.bRequest = UR_CLEAR_FEATURE; USETW(req.wValue, UF_ENDPOINT_HALT); req.wIndex[0] = ep->edesc->bEndpointAddress; req.wIndex[1] = 0; USETW(req.wLength, 0); /* copy in the transfer */ usbd_copy_in(xfer->frbuffers, 0, &req, sizeof(req)); /* set length */ usbd_xfer_set_frame_len(xfer, 0, sizeof(req)); xfer->nframes = 1; USB_BUS_UNLOCK(udev->bus); usbd_transfer_submit(xfer); USB_BUS_LOCK(udev->bus); break; } ep++; to--; goto tr_setup; default: if (xfer->error == USB_ERR_CANCELLED) { break; } goto tr_setup; } /* store current endpoint */ udev->ep_curr = ep; USB_BUS_UNLOCK(udev->bus); } static usb_handle_req_t * usbd_get_hr_func(struct usb_device *udev) { /* figure out if there is a Handle Request function */ if (udev->flags.usb_mode == USB_MODE_DEVICE) return (usb_temp_get_desc_p); else if (udev->parent_hub == NULL) return (udev->bus->methods->roothub_exec); else return (NULL); } /*------------------------------------------------------------------------* * usbd_do_request_flags and usbd_do_request * * Description of arguments passed to these functions: * * "udev" - this is the "usb_device" structure pointer on which the * request should be performed. It is possible to call this function * in both Host Side mode and Device Side mode. * * "mtx" - if this argument is non-NULL the mutex pointed to by it * will get dropped and picked up during the execution of this * function, hence this function sometimes needs to sleep. If this * argument is NULL it has no effect. * * "req" - this argument must always be non-NULL and points to an * 8-byte structure holding the USB request to be done. The USB * request structure has a bit telling the direction of the USB * request, if it is a read or a write. * * "data" - if the "wLength" part of the structure pointed to by "req" * is non-zero this argument must point to a valid kernel buffer which * can hold at least "wLength" bytes. If "wLength" is zero "data" can * be NULL. * * "flags" - here is a list of valid flags: * * o USB_SHORT_XFER_OK: allows the data transfer to be shorter than * specified * * o USB_DELAY_STATUS_STAGE: allows the status stage to be performed * at a later point in time. This is tunable by the "hw.usb.ss_delay" * sysctl. This flag is mostly useful for debugging. * * o USB_USER_DATA_PTR: treat the "data" pointer like a userland * pointer. * * "actlen" - if non-NULL the actual transfer length will be stored in * the 16-bit unsigned integer pointed to by "actlen". This * information is mostly useful when the "USB_SHORT_XFER_OK" flag is * used. * * "timeout" - gives the timeout for the control transfer in * milliseconds. A "timeout" value less than 50 milliseconds is * treated like a 50 millisecond timeout. A "timeout" value greater * than 30 seconds is treated like a 30 second timeout. This USB stack * does not allow control requests without a timeout. * * NOTE: This function is thread safe. All calls to * "usbd_do_request_flags" will be serialised by the use of an * internal "sx_lock". * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_do_request_flags(struct usb_device *udev, struct mtx *mtx, struct usb_device_request *req, void *data, uint16_t flags, uint16_t *actlen, usb_timeout_t timeout) { usb_handle_req_t *hr_func; struct usb_xfer *xfer; const void *desc; int err = 0; usb_ticks_t start_ticks; usb_ticks_t delta_ticks; usb_ticks_t max_ticks; uint16_t length; uint16_t temp; if (timeout < 50) { /* timeout is too small */ timeout = 50; } if (timeout > 30000) { /* timeout is too big */ timeout = 30000; } length = UGETW(req->wLength); DPRINTFN(5, "udev=%p bmRequestType=0x%02x bRequest=0x%02x " "wValue=0x%02x%02x wIndex=0x%02x%02x wLength=0x%02x%02x\n", udev, req->bmRequestType, req->bRequest, req->wValue[1], req->wValue[0], req->wIndex[1], req->wIndex[0], req->wLength[1], req->wLength[0]); /* Check if the device is still alive */ if (udev->state < USB_STATE_POWERED) { DPRINTF("usb device has gone\n"); return (USB_ERR_NOT_CONFIGURED); } /* * Set "actlen" to a known value in case the caller does not * check the return value: */ if (actlen) *actlen = 0; #if (USB_HAVE_USER_IO == 0) if (flags & USB_USER_DATA_PTR) return (USB_ERR_INVAL); #endif if (mtx) { mtx_unlock(mtx); if (mtx != &Giant) { mtx_assert(mtx, MA_NOTOWNED); } } /* * Grab the default sx-lock so that serialisation * is achieved when multiple threads are involved: */ sx_xlock(&udev->ctrl_sx); hr_func = usbd_get_hr_func(udev); if (hr_func != NULL) { DPRINTF("Handle Request function is set\n"); desc = NULL; temp = 0; if (!(req->bmRequestType & UT_READ)) { if (length != 0) { DPRINTFN(1, "The handle request function " "does not support writing data!\n"); err = USB_ERR_INVAL; goto done; } } /* The root HUB code needs the BUS lock locked */ USB_BUS_LOCK(udev->bus); err = (hr_func) (udev, req, &desc, &temp); USB_BUS_UNLOCK(udev->bus); if (err) goto done; if (length > temp) { if (!(flags & USB_SHORT_XFER_OK)) { err = USB_ERR_SHORT_XFER; goto done; } length = temp; } if (actlen) *actlen = length; if (length > 0) { #if USB_HAVE_USER_IO if (flags & USB_USER_DATA_PTR) { if (copyout(desc, data, length)) { err = USB_ERR_INVAL; goto done; } } else #endif bcopy(desc, data, length); } goto done; /* success */ } /* * Setup a new USB transfer or use the existing one, if any: */ usbd_default_transfer_setup(udev); xfer = udev->default_xfer[0]; if (xfer == NULL) { /* most likely out of memory */ err = USB_ERR_NOMEM; goto done; } USB_XFER_LOCK(xfer); if (flags & USB_DELAY_STATUS_STAGE) xfer->flags.manual_status = 1; else xfer->flags.manual_status = 0; if (flags & USB_SHORT_XFER_OK) xfer->flags.short_xfer_ok = 1; else xfer->flags.short_xfer_ok = 0; xfer->timeout = timeout; start_ticks = ticks; max_ticks = USB_MS_TO_TICKS(timeout); usbd_copy_in(xfer->frbuffers, 0, req, sizeof(*req)); usbd_xfer_set_frame_len(xfer, 0, sizeof(*req)); xfer->nframes = 2; while (1) { temp = length; if (temp > xfer->max_data_length) { temp = usbd_xfer_max_len(xfer); } usbd_xfer_set_frame_len(xfer, 1, temp); if (temp > 0) { if (!(req->bmRequestType & UT_READ)) { #if USB_HAVE_USER_IO if (flags & USB_USER_DATA_PTR) { USB_XFER_UNLOCK(xfer); err = usbd_copy_in_user(xfer->frbuffers + 1, 0, data, temp); USB_XFER_LOCK(xfer); if (err) { err = USB_ERR_INVAL; break; } } else #endif usbd_copy_in(xfer->frbuffers + 1, 0, data, temp); } xfer->nframes = 2; } else { if (xfer->frlengths[0] == 0) { if (xfer->flags.manual_status) { #ifdef USB_DEBUG int temp; temp = usb_ss_delay; if (temp > 5000) { temp = 5000; } if (temp > 0) { usb_pause_mtx( xfer->xroot->xfer_mtx, USB_MS_TO_TICKS(temp)); } #endif xfer->flags.manual_status = 0; } else { break; } } xfer->nframes = 1; } usbd_transfer_start(xfer); while (usbd_transfer_pending(xfer)) { cv_wait(&udev->ctrlreq_cv, xfer->xroot->xfer_mtx); } err = xfer->error; if (err) { break; } /* subtract length of SETUP packet, if any */ if (xfer->aframes > 0) { xfer->actlen -= xfer->frlengths[0]; } else { xfer->actlen = 0; } /* check for short packet */ if (temp > xfer->actlen) { temp = xfer->actlen; length = temp; } if (temp > 0) { if (req->bmRequestType & UT_READ) { #if USB_HAVE_USER_IO if (flags & USB_USER_DATA_PTR) { USB_XFER_UNLOCK(xfer); err = usbd_copy_out_user(xfer->frbuffers + 1, 0, data, temp); USB_XFER_LOCK(xfer); if (err) { err = USB_ERR_INVAL; break; } } else #endif usbd_copy_out(xfer->frbuffers + 1, 0, data, temp); } } /* * Clear "frlengths[0]" so that we don't send the setup * packet again: */ usbd_xfer_set_frame_len(xfer, 0, 0); /* update length and data pointer */ length -= temp; data = USB_ADD_BYTES(data, temp); if (actlen) { (*actlen) += temp; } /* check for timeout */ delta_ticks = ticks - start_ticks; if (delta_ticks > max_ticks) { if (!err) { err = USB_ERR_TIMEOUT; } } if (err) { break; } } if (err) { /* * Make sure that the control endpoint is no longer * blocked in case of a non-transfer related error: */ usbd_transfer_stop(xfer); } USB_XFER_UNLOCK(xfer); done: sx_xunlock(&udev->ctrl_sx); if (mtx) { mtx_lock(mtx); } return ((usb_error_t)err); } /*------------------------------------------------------------------------* * usbd_do_request_proc - factored out code * * This function is factored out code. It does basically the same like * usbd_do_request_flags, except it will check the status of the * passed process argument before doing the USB request. If the * process is draining the USB_ERR_IOERROR code will be returned. It * is assumed that the mutex associated with the process is locked * when calling this function. *------------------------------------------------------------------------*/ usb_error_t usbd_do_request_proc(struct usb_device *udev, struct usb_process *pproc, struct usb_device_request *req, void *data, uint16_t flags, uint16_t *actlen, usb_timeout_t timeout) { usb_error_t err; uint16_t len; /* get request data length */ len = UGETW(req->wLength); /* check if the device is being detached */ if (usb_proc_is_gone(pproc)) { err = USB_ERR_IOERROR; goto done; } /* forward the USB request */ err = usbd_do_request_flags(udev, pproc->up_mtx, req, data, flags, actlen, timeout); done: /* on failure we zero the data */ /* on short packet we zero the unused data */ if ((len != 0) && (req->bmRequestType & UE_DIR_IN)) { if (err) memset(data, 0, len); else if (actlen && *actlen != len) memset(((uint8_t *)data) + *actlen, 0, len - *actlen); } return (err); } /*------------------------------------------------------------------------* * usbd_req_reset_port * * This function will instruct an USB HUB to perform a reset sequence * on the specified port number. * * Returns: * 0: Success. The USB device should now be at address zero. * Else: Failure. No USB device is present and the USB port should be * disabled. *------------------------------------------------------------------------*/ usb_error_t usbd_req_reset_port(struct usb_device *udev, struct mtx *mtx, uint8_t port) { struct usb_port_status ps; usb_error_t err; uint16_t n; #ifdef USB_DEBUG uint16_t pr_poll_delay; uint16_t pr_recovery_delay; #endif err = usbd_req_set_port_feature(udev, mtx, port, UHF_PORT_RESET); if (err) { goto done; } #ifdef USB_DEBUG /* range check input parameters */ pr_poll_delay = usb_pr_poll_delay; if (pr_poll_delay < 1) { pr_poll_delay = 1; } else if (pr_poll_delay > 1000) { pr_poll_delay = 1000; } pr_recovery_delay = usb_pr_recovery_delay; if (pr_recovery_delay > 1000) { pr_recovery_delay = 1000; } #endif n = 0; while (1) { #ifdef USB_DEBUG /* wait for the device to recover from reset */ usb_pause_mtx(mtx, USB_MS_TO_TICKS(pr_poll_delay)); n += pr_poll_delay; #else /* wait for the device to recover from reset */ usb_pause_mtx(mtx, USB_MS_TO_TICKS(USB_PORT_RESET_DELAY)); n += USB_PORT_RESET_DELAY; #endif err = usbd_req_get_port_status(udev, mtx, &ps, port); if (err) { goto done; } /* if the device disappeared, just give up */ if (!(UGETW(ps.wPortStatus) & UPS_CURRENT_CONNECT_STATUS)) { goto done; } /* check if reset is complete */ if (UGETW(ps.wPortChange) & UPS_C_PORT_RESET) { break; } /* check for timeout */ if (n > 1000) { n = 0; break; } } /* clear port reset first */ err = usbd_req_clear_port_feature( udev, mtx, port, UHF_C_PORT_RESET); if (err) { goto done; } /* check for timeout */ if (n == 0) { err = USB_ERR_TIMEOUT; goto done; } #ifdef USB_DEBUG /* wait for the device to recover from reset */ usb_pause_mtx(mtx, USB_MS_TO_TICKS(pr_recovery_delay)); #else /* wait for the device to recover from reset */ usb_pause_mtx(mtx, USB_MS_TO_TICKS(USB_PORT_RESET_RECOVERY)); #endif done: DPRINTFN(2, "port %d reset returning error=%s\n", port, usbd_errstr(err)); return (err); } /*------------------------------------------------------------------------* * usbd_req_get_desc * * This function can be used to retrieve USB descriptors. It contains * some additional logic like zeroing of missing descriptor bytes and * retrying an USB descriptor in case of failure. The "min_len" * argument specifies the minimum descriptor length. The "max_len" * argument specifies the maximum descriptor length. If the real * descriptor length is less than the minimum length the missing * byte(s) will be zeroed. The type field, the second byte of the USB * descriptor, will get forced to the correct type. If the "actlen" * pointer is non-NULL, the actual length of the transfer will get * stored in the 16-bit unsigned integer which it is pointing to. The * first byte of the descriptor will not get updated. If the "actlen" * pointer is NULL the first byte of the descriptor will get updated * to reflect the actual length instead. If "min_len" is not equal to * "max_len" then this function will try to retrive the beginning of * the descriptor and base the maximum length on the first byte of the * descriptor. * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_get_desc(struct usb_device *udev, struct mtx *mtx, uint16_t *actlen, void *desc, uint16_t min_len, uint16_t max_len, uint16_t id, uint8_t type, uint8_t index, uint8_t retries) { struct usb_device_request req; uint8_t *buf; usb_error_t err; DPRINTFN(4, "id=%d, type=%d, index=%d, max_len=%d\n", id, type, index, max_len); req.bmRequestType = UT_READ_DEVICE; req.bRequest = UR_GET_DESCRIPTOR; USETW2(req.wValue, type, index); USETW(req.wIndex, id); while (1) { if ((min_len < 2) || (max_len < 2)) { err = USB_ERR_INVAL; goto done; } USETW(req.wLength, min_len); err = usbd_do_request_flags(udev, mtx, &req, desc, 0, NULL, 1000); if (err) { if (!retries) { goto done; } retries--; usb_pause_mtx(mtx, hz / 5); continue; } buf = desc; if (min_len == max_len) { /* enforce correct length */ if ((buf[0] > min_len) && (actlen == NULL)) buf[0] = min_len; /* enforce correct type */ buf[1] = type; goto done; } /* range check */ if (max_len > buf[0]) { max_len = buf[0]; } /* zero minimum data */ while (min_len > max_len) { min_len--; buf[min_len] = 0; } /* set new minimum length */ min_len = max_len; } done: if (actlen != NULL) { if (err) *actlen = 0; else *actlen = min_len; } return (err); } /*------------------------------------------------------------------------* * usbd_req_get_string_any * * This function will return the string given by "string_index" * using the first language ID. The maximum length "len" includes * the terminating zero. The "len" argument should be twice as * big pluss 2 bytes, compared with the actual maximum string length ! * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_get_string_any(struct usb_device *udev, struct mtx *mtx, char *buf, uint16_t len, uint8_t string_index) { char *s; uint8_t *temp; uint16_t i; uint16_t n; uint16_t c; uint8_t swap; usb_error_t err; if (len == 0) { /* should not happen */ return (USB_ERR_NORMAL_COMPLETION); } if (string_index == 0) { /* this is the language table */ buf[0] = 0; return (USB_ERR_INVAL); } if (udev->flags.no_strings) { buf[0] = 0; return (USB_ERR_STALLED); } err = usbd_req_get_string_desc (udev, mtx, buf, len, udev->langid, string_index); if (err) { buf[0] = 0; return (err); } temp = (uint8_t *)buf; if (temp[0] < 2) { /* string length is too short */ buf[0] = 0; return (USB_ERR_INVAL); } /* reserve one byte for terminating zero */ len--; /* find maximum length */ s = buf; n = (temp[0] / 2) - 1; if (n > len) { n = len; } /* skip descriptor header */ temp += 2; /* reset swap state */ swap = 3; /* convert and filter */ for (i = 0; (i != n); i++) { c = UGETW(temp + (2 * i)); /* convert from Unicode, handle buggy strings */ if (((c & 0xff00) == 0) && (swap & 1)) { /* Little Endian, default */ *s = c; swap = 1; } else if (((c & 0x00ff) == 0) && (swap & 2)) { /* Big Endian */ *s = c >> 8; swap = 2; } else { /* silently skip bad character */ continue; } /* * Filter by default - we don't allow greater and less than * signs because they might confuse the dmesg printouts! */ if ((*s == '<') || (*s == '>') || (!isprint(*s))) { /* silently skip bad character */ continue; } s++; } *s = 0; /* zero terminate resulting string */ return (USB_ERR_NORMAL_COMPLETION); } /*------------------------------------------------------------------------* * usbd_req_get_string_desc * * If you don't know the language ID, consider using * "usbd_req_get_string_any()". * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_get_string_desc(struct usb_device *udev, struct mtx *mtx, void *sdesc, uint16_t max_len, uint16_t lang_id, uint8_t string_index) { return (usbd_req_get_desc(udev, mtx, NULL, sdesc, 2, max_len, lang_id, UDESC_STRING, string_index, 0)); } /*------------------------------------------------------------------------* * usbd_req_get_config_desc_ptr * * This function is used in device side mode to retrieve the pointer * to the generated config descriptor. This saves allocating space for * an additional config descriptor when setting the configuration. * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_get_descriptor_ptr(struct usb_device *udev, struct usb_config_descriptor **ppcd, uint16_t wValue) { struct usb_device_request req; usb_handle_req_t *hr_func; const void *ptr; uint16_t len; usb_error_t err; req.bmRequestType = UT_READ_DEVICE; req.bRequest = UR_GET_DESCRIPTOR; USETW(req.wValue, wValue); USETW(req.wIndex, 0); USETW(req.wLength, 0); ptr = NULL; len = 0; hr_func = usbd_get_hr_func(udev); if (hr_func == NULL) err = USB_ERR_INVAL; else { USB_BUS_LOCK(udev->bus); err = (hr_func) (udev, &req, &ptr, &len); USB_BUS_UNLOCK(udev->bus); } if (err) ptr = NULL; else if (ptr == NULL) err = USB_ERR_INVAL; *ppcd = __DECONST(struct usb_config_descriptor *, ptr); return (err); } /*------------------------------------------------------------------------* * usbd_req_get_config_desc * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_get_config_desc(struct usb_device *udev, struct mtx *mtx, struct usb_config_descriptor *d, uint8_t conf_index) { usb_error_t err; DPRINTFN(4, "confidx=%d\n", conf_index); err = usbd_req_get_desc(udev, mtx, NULL, d, sizeof(*d), sizeof(*d), 0, UDESC_CONFIG, conf_index, 0); if (err) { goto done; } /* Extra sanity checking */ if (UGETW(d->wTotalLength) < sizeof(*d)) { err = USB_ERR_INVAL; } done: return (err); } /*------------------------------------------------------------------------* * usbd_req_get_config_desc_full * * This function gets the complete USB configuration descriptor and * ensures that "wTotalLength" is correct. * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_get_config_desc_full(struct usb_device *udev, struct mtx *mtx, struct usb_config_descriptor **ppcd, struct malloc_type *mtype, uint8_t index) { struct usb_config_descriptor cd; struct usb_config_descriptor *cdesc; uint16_t len; usb_error_t err; DPRINTFN(4, "index=%d\n", index); *ppcd = NULL; err = usbd_req_get_config_desc(udev, mtx, &cd, index); if (err) { return (err); } /* get full descriptor */ len = UGETW(cd.wTotalLength); if (len < sizeof(*cdesc)) { /* corrupt descriptor */ return (USB_ERR_INVAL); } cdesc = malloc(len, mtype, M_WAITOK); if (cdesc == NULL) { return (USB_ERR_NOMEM); } err = usbd_req_get_desc(udev, mtx, NULL, cdesc, len, len, 0, UDESC_CONFIG, index, 3); if (err) { free(cdesc, mtype); return (err); } /* make sure that the device is not fooling us: */ USETW(cdesc->wTotalLength, len); *ppcd = cdesc; return (0); /* success */ } /*------------------------------------------------------------------------* * usbd_req_get_device_desc * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_get_device_desc(struct usb_device *udev, struct mtx *mtx, struct usb_device_descriptor *d) { DPRINTFN(4, "\n"); return (usbd_req_get_desc(udev, mtx, NULL, d, sizeof(*d), sizeof(*d), 0, UDESC_DEVICE, 0, 3)); } /*------------------------------------------------------------------------* * usbd_req_get_alt_interface_no * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_get_alt_interface_no(struct usb_device *udev, struct mtx *mtx, uint8_t *alt_iface_no, uint8_t iface_index) { struct usb_interface *iface = usbd_get_iface(udev, iface_index); struct usb_device_request req; if ((iface == NULL) || (iface->idesc == NULL)) return (USB_ERR_INVAL); req.bmRequestType = UT_READ_INTERFACE; req.bRequest = UR_GET_INTERFACE; USETW(req.wValue, 0); req.wIndex[0] = iface->idesc->bInterfaceNumber; req.wIndex[1] = 0; USETW(req.wLength, 1); return (usbd_do_request(udev, mtx, &req, alt_iface_no)); } /*------------------------------------------------------------------------* * usbd_req_set_alt_interface_no * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_set_alt_interface_no(struct usb_device *udev, struct mtx *mtx, uint8_t iface_index, uint8_t alt_no) { struct usb_interface *iface = usbd_get_iface(udev, iface_index); struct usb_device_request req; if ((iface == NULL) || (iface->idesc == NULL)) return (USB_ERR_INVAL); req.bmRequestType = UT_WRITE_INTERFACE; req.bRequest = UR_SET_INTERFACE; req.wValue[0] = alt_no; req.wValue[1] = 0; req.wIndex[0] = iface->idesc->bInterfaceNumber; req.wIndex[1] = 0; USETW(req.wLength, 0); return (usbd_do_request(udev, mtx, &req, 0)); } /*------------------------------------------------------------------------* * usbd_req_get_device_status * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_get_device_status(struct usb_device *udev, struct mtx *mtx, struct usb_status *st) { struct usb_device_request req; req.bmRequestType = UT_READ_DEVICE; req.bRequest = UR_GET_STATUS; USETW(req.wValue, 0); USETW(req.wIndex, 0); USETW(req.wLength, sizeof(*st)); return (usbd_do_request(udev, mtx, &req, st)); } /*------------------------------------------------------------------------* * usbd_req_get_hub_descriptor * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_get_hub_descriptor(struct usb_device *udev, struct mtx *mtx, struct usb_hub_descriptor *hd, uint8_t nports) { struct usb_device_request req; uint16_t len = (nports + 7 + (8 * 8)) / 8; req.bmRequestType = UT_READ_CLASS_DEVICE; req.bRequest = UR_GET_DESCRIPTOR; USETW2(req.wValue, UDESC_HUB, 0); USETW(req.wIndex, 0); USETW(req.wLength, len); return (usbd_do_request(udev, mtx, &req, hd)); } /*------------------------------------------------------------------------* * usbd_req_get_hub_status * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_get_hub_status(struct usb_device *udev, struct mtx *mtx, struct usb_hub_status *st) { struct usb_device_request req; req.bmRequestType = UT_READ_CLASS_DEVICE; req.bRequest = UR_GET_STATUS; USETW(req.wValue, 0); USETW(req.wIndex, 0); USETW(req.wLength, sizeof(struct usb_hub_status)); return (usbd_do_request(udev, mtx, &req, st)); } /*------------------------------------------------------------------------* * usbd_req_set_address * * This function is used to set the address for an USB device. After * port reset the USB device will respond at address zero. * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_set_address(struct usb_device *udev, struct mtx *mtx, uint16_t addr) { struct usb_device_request req; DPRINTFN(6, "setting device address=%d\n", addr); req.bmRequestType = UT_WRITE_DEVICE; req.bRequest = UR_SET_ADDRESS; USETW(req.wValue, addr); USETW(req.wIndex, 0); USETW(req.wLength, 0); /* Setting the address should not take more than 1 second ! */ return (usbd_do_request_flags(udev, mtx, &req, NULL, USB_DELAY_STATUS_STAGE, NULL, 1000)); } /*------------------------------------------------------------------------* * usbd_req_get_port_status * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_get_port_status(struct usb_device *udev, struct mtx *mtx, struct usb_port_status *ps, uint8_t port) { struct usb_device_request req; req.bmRequestType = UT_READ_CLASS_OTHER; req.bRequest = UR_GET_STATUS; USETW(req.wValue, 0); req.wIndex[0] = port; req.wIndex[1] = 0; USETW(req.wLength, sizeof *ps); return (usbd_do_request(udev, mtx, &req, ps)); } /*------------------------------------------------------------------------* * usbd_req_clear_hub_feature * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_clear_hub_feature(struct usb_device *udev, struct mtx *mtx, uint16_t sel) { struct usb_device_request req; req.bmRequestType = UT_WRITE_CLASS_DEVICE; req.bRequest = UR_CLEAR_FEATURE; USETW(req.wValue, sel); USETW(req.wIndex, 0); USETW(req.wLength, 0); return (usbd_do_request(udev, mtx, &req, 0)); } /*------------------------------------------------------------------------* * usbd_req_set_hub_feature * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_set_hub_feature(struct usb_device *udev, struct mtx *mtx, uint16_t sel) { struct usb_device_request req; req.bmRequestType = UT_WRITE_CLASS_DEVICE; req.bRequest = UR_SET_FEATURE; USETW(req.wValue, sel); USETW(req.wIndex, 0); USETW(req.wLength, 0); return (usbd_do_request(udev, mtx, &req, 0)); } /*------------------------------------------------------------------------* * usbd_req_clear_port_feature * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_clear_port_feature(struct usb_device *udev, struct mtx *mtx, uint8_t port, uint16_t sel) { struct usb_device_request req; req.bmRequestType = UT_WRITE_CLASS_OTHER; req.bRequest = UR_CLEAR_FEATURE; USETW(req.wValue, sel); req.wIndex[0] = port; req.wIndex[1] = 0; USETW(req.wLength, 0); return (usbd_do_request(udev, mtx, &req, 0)); } /*------------------------------------------------------------------------* * usbd_req_set_port_feature * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_set_port_feature(struct usb_device *udev, struct mtx *mtx, uint8_t port, uint16_t sel) { struct usb_device_request req; req.bmRequestType = UT_WRITE_CLASS_OTHER; req.bRequest = UR_SET_FEATURE; USETW(req.wValue, sel); req.wIndex[0] = port; req.wIndex[1] = 0; USETW(req.wLength, 0); return (usbd_do_request(udev, mtx, &req, 0)); } /*------------------------------------------------------------------------* * usbd_req_set_protocol * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_set_protocol(struct usb_device *udev, struct mtx *mtx, uint8_t iface_index, uint16_t report) { struct usb_interface *iface = usbd_get_iface(udev, iface_index); struct usb_device_request req; if ((iface == NULL) || (iface->idesc == NULL)) { return (USB_ERR_INVAL); } DPRINTFN(5, "iface=%p, report=%d, endpt=%d\n", iface, report, iface->idesc->bInterfaceNumber); req.bmRequestType = UT_WRITE_CLASS_INTERFACE; req.bRequest = UR_SET_PROTOCOL; USETW(req.wValue, report); req.wIndex[0] = iface->idesc->bInterfaceNumber; req.wIndex[1] = 0; USETW(req.wLength, 0); return (usbd_do_request(udev, mtx, &req, 0)); } /*------------------------------------------------------------------------* * usbd_req_set_report * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_set_report(struct usb_device *udev, struct mtx *mtx, void *data, uint16_t len, uint8_t iface_index, uint8_t type, uint8_t id) { struct usb_interface *iface = usbd_get_iface(udev, iface_index); struct usb_device_request req; if ((iface == NULL) || (iface->idesc == NULL)) { return (USB_ERR_INVAL); } DPRINTFN(5, "len=%d\n", len); req.bmRequestType = UT_WRITE_CLASS_INTERFACE; req.bRequest = UR_SET_REPORT; USETW2(req.wValue, type, id); req.wIndex[0] = iface->idesc->bInterfaceNumber; req.wIndex[1] = 0; USETW(req.wLength, len); return (usbd_do_request(udev, mtx, &req, data)); } /*------------------------------------------------------------------------* * usbd_req_get_report * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_get_report(struct usb_device *udev, struct mtx *mtx, void *data, uint16_t len, uint8_t iface_index, uint8_t type, uint8_t id) { struct usb_interface *iface = usbd_get_iface(udev, iface_index); struct usb_device_request req; if ((iface == NULL) || (iface->idesc == NULL) || (id == 0)) { return (USB_ERR_INVAL); } DPRINTFN(5, "len=%d\n", len); req.bmRequestType = UT_READ_CLASS_INTERFACE; req.bRequest = UR_GET_REPORT; USETW2(req.wValue, type, id); req.wIndex[0] = iface->idesc->bInterfaceNumber; req.wIndex[1] = 0; USETW(req.wLength, len); return (usbd_do_request(udev, mtx, &req, data)); } /*------------------------------------------------------------------------* * usbd_req_set_idle * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_set_idle(struct usb_device *udev, struct mtx *mtx, uint8_t iface_index, uint8_t duration, uint8_t id) { struct usb_interface *iface = usbd_get_iface(udev, iface_index); struct usb_device_request req; if ((iface == NULL) || (iface->idesc == NULL)) { return (USB_ERR_INVAL); } DPRINTFN(5, "%d %d\n", duration, id); req.bmRequestType = UT_WRITE_CLASS_INTERFACE; req.bRequest = UR_SET_IDLE; USETW2(req.wValue, duration, id); req.wIndex[0] = iface->idesc->bInterfaceNumber; req.wIndex[1] = 0; USETW(req.wLength, 0); return (usbd_do_request(udev, mtx, &req, 0)); } /*------------------------------------------------------------------------* * usbd_req_get_report_descriptor * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_get_report_descriptor(struct usb_device *udev, struct mtx *mtx, void *d, uint16_t size, uint8_t iface_index) { struct usb_interface *iface = usbd_get_iface(udev, iface_index); struct usb_device_request req; if ((iface == NULL) || (iface->idesc == NULL)) { return (USB_ERR_INVAL); } req.bmRequestType = UT_READ_INTERFACE; req.bRequest = UR_GET_DESCRIPTOR; USETW2(req.wValue, UDESC_REPORT, 0); /* report id should be 0 */ req.wIndex[0] = iface->idesc->bInterfaceNumber; req.wIndex[1] = 0; USETW(req.wLength, size); return (usbd_do_request(udev, mtx, &req, d)); } /*------------------------------------------------------------------------* * usbd_req_set_config * * This function is used to select the current configuration number in * both USB device side mode and USB host side mode. When setting the * configuration the function of the interfaces can change. * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_set_config(struct usb_device *udev, struct mtx *mtx, uint8_t conf) { struct usb_device_request req; DPRINTF("setting config %d\n", conf); /* do "set configuration" request */ req.bmRequestType = UT_WRITE_DEVICE; req.bRequest = UR_SET_CONFIG; req.wValue[0] = conf; req.wValue[1] = 0; USETW(req.wIndex, 0); USETW(req.wLength, 0); return (usbd_do_request(udev, mtx, &req, 0)); } /*------------------------------------------------------------------------* * usbd_req_get_config * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_get_config(struct usb_device *udev, struct mtx *mtx, uint8_t *pconf) { struct usb_device_request req; req.bmRequestType = UT_READ_DEVICE; req.bRequest = UR_GET_CONFIG; USETW(req.wValue, 0); USETW(req.wIndex, 0); USETW(req.wLength, 1); return (usbd_do_request(udev, mtx, &req, pconf)); } /*------------------------------------------------------------------------* * usbd_req_re_enumerate * * NOTE: After this function returns the hardware is in the * unconfigured state! The application is responsible for setting a * new configuration. * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_re_enumerate(struct usb_device *udev, struct mtx *mtx) { struct usb_device *parent_hub; usb_error_t err; uint8_t old_addr; uint8_t do_retry = 1; if (udev->flags.usb_mode != USB_MODE_HOST) { return (USB_ERR_INVAL); } old_addr = udev->address; parent_hub = udev->parent_hub; if (parent_hub == NULL) { return (USB_ERR_INVAL); } retry: err = usbd_req_reset_port(parent_hub, mtx, udev->port_no); if (err) { DPRINTFN(0, "addr=%d, port reset failed, %s\n", old_addr, usbd_errstr(err)); goto done; } /* * After that the port has been reset our device should be at * address zero: */ udev->address = USB_START_ADDR; /* reset "bMaxPacketSize" */ udev->ddesc.bMaxPacketSize = USB_MAX_IPACKET; /* * Restore device address: */ err = usbd_req_set_address(udev, mtx, old_addr); if (err) { /* XXX ignore any errors! */ DPRINTFN(0, "addr=%d, set address failed! (%s, ignored)\n", old_addr, usbd_errstr(err)); } /* restore device address */ udev->address = old_addr; /* allow device time to set new address */ usb_pause_mtx(mtx, USB_MS_TO_TICKS(USB_SET_ADDRESS_SETTLE)); /* get the device descriptor */ err = usbd_req_get_desc(udev, mtx, NULL, &udev->ddesc, USB_MAX_IPACKET, USB_MAX_IPACKET, 0, UDESC_DEVICE, 0, 0); if (err) { DPRINTFN(0, "getting device descriptor " "at addr %d failed, %s\n", udev->address, usbd_errstr(err)); goto done; } /* get the full device descriptor */ err = usbd_req_get_device_desc(udev, mtx, &udev->ddesc); if (err) { DPRINTFN(0, "addr=%d, getting device " "descriptor failed, %s\n", old_addr, usbd_errstr(err)); goto done; } done: if (err && do_retry) { /* give the USB firmware some time to load */ usb_pause_mtx(mtx, hz / 2); /* no more retries after this retry */ do_retry = 0; /* try again */ goto retry; } /* restore address */ udev->address = old_addr; return (err); } /*------------------------------------------------------------------------* * usbd_req_clear_device_feature * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_clear_device_feature(struct usb_device *udev, struct mtx *mtx, uint16_t sel) { struct usb_device_request req; req.bmRequestType = UT_WRITE_DEVICE; req.bRequest = UR_CLEAR_FEATURE; USETW(req.wValue, sel); USETW(req.wIndex, 0); USETW(req.wLength, 0); return (usbd_do_request(udev, mtx, &req, 0)); } /*------------------------------------------------------------------------* * usbd_req_set_device_feature * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ usb_error_t usbd_req_set_device_feature(struct usb_device *udev, struct mtx *mtx, uint16_t sel) { struct usb_device_request req; req.bmRequestType = UT_WRITE_DEVICE; req.bRequest = UR_SET_FEATURE; USETW(req.wValue, sel); USETW(req.wIndex, 0); USETW(req.wLength, 0); return (usbd_do_request(udev, mtx, &req, 0)); }