1599 lines
41 KiB
C
1599 lines
41 KiB
C
/* $FreeBSD$ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc. All rights reserved.
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* Copyright (c) 1998 Lennart Augustsson. All rights reserved.
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* Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <dev/usb/usb_mfunc.h>
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#include <dev/usb/usb_error.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usb_ioctl.h>
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#include <dev/usb/usbhid.h>
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#define USB_DEBUG_VAR usb2_debug
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#include <dev/usb/usb_core.h>
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#include <dev/usb/usb_busdma.h>
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#include <dev/usb/usb_request.h>
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#include <dev/usb/usb_process.h>
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#include <dev/usb/usb_transfer.h>
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#include <dev/usb/usb_debug.h>
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#include <dev/usb/usb_device.h>
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#include <dev/usb/usb_util.h>
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#include <dev/usb/usb_dynamic.h>
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#include <dev/usb/usb_controller.h>
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#include <dev/usb/usb_bus.h>
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#include <sys/ctype.h>
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#if USB_DEBUG
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static int usb2_pr_poll_delay = USB_PORT_RESET_DELAY;
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static int usb2_pr_recovery_delay = USB_PORT_RESET_RECOVERY;
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static int usb2_ss_delay = 0;
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SYSCTL_INT(_hw_usb, OID_AUTO, pr_poll_delay, CTLFLAG_RW,
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&usb2_pr_poll_delay, 0, "USB port reset poll delay in ms");
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SYSCTL_INT(_hw_usb, OID_AUTO, pr_recovery_delay, CTLFLAG_RW,
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&usb2_pr_recovery_delay, 0, "USB port reset recovery delay in ms");
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SYSCTL_INT(_hw_usb, OID_AUTO, ss_delay, CTLFLAG_RW,
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&usb2_ss_delay, 0, "USB status stage delay in ms");
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#endif
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/*------------------------------------------------------------------------*
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* usb2_do_request_callback
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*
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* This function is the USB callback for generic USB Host control
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* transfers.
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*------------------------------------------------------------------------*/
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void
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usb2_do_request_callback(struct usb_xfer *xfer)
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{
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; /* workaround for a bug in "indent" */
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DPRINTF("st=%u\n", USB_GET_STATE(xfer));
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switch (USB_GET_STATE(xfer)) {
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case USB_ST_SETUP:
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usb2_start_hardware(xfer);
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break;
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default:
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usb2_cv_signal(xfer->xroot->udev->default_cv);
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break;
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}
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}
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/*------------------------------------------------------------------------*
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* usb2_do_clear_stall_callback
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*
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* This function is the USB callback for generic clear stall requests.
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*------------------------------------------------------------------------*/
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void
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usb2_do_clear_stall_callback(struct usb_xfer *xfer)
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{
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struct usb_device_request req;
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struct usb_device *udev;
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struct usb_pipe *pipe;
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struct usb_pipe *pipe_end;
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struct usb_pipe *pipe_first;
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uint8_t to;
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udev = xfer->xroot->udev;
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USB_BUS_LOCK(udev->bus);
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/* round robin pipe clear stall */
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pipe = udev->pipe_curr;
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pipe_end = udev->pipes + udev->pipes_max;
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pipe_first = udev->pipes;
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to = udev->pipes_max;
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if (pipe == NULL) {
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pipe = pipe_first;
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}
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switch (USB_GET_STATE(xfer)) {
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case USB_ST_TRANSFERRED:
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if (pipe->edesc &&
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pipe->is_stalled) {
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pipe->toggle_next = 0;
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pipe->is_stalled = 0;
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/* start up the current or next transfer, if any */
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usb2_command_wrapper(&pipe->pipe_q,
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pipe->pipe_q.curr);
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}
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pipe++;
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case USB_ST_SETUP:
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tr_setup:
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if (pipe == pipe_end) {
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pipe = pipe_first;
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}
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if (pipe->edesc &&
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pipe->is_stalled) {
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/* setup a clear-stall packet */
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req.bmRequestType = UT_WRITE_ENDPOINT;
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req.bRequest = UR_CLEAR_FEATURE;
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USETW(req.wValue, UF_ENDPOINT_HALT);
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req.wIndex[0] = pipe->edesc->bEndpointAddress;
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req.wIndex[1] = 0;
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USETW(req.wLength, 0);
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/* copy in the transfer */
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usb2_copy_in(xfer->frbuffers, 0, &req, sizeof(req));
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/* set length */
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xfer->frlengths[0] = sizeof(req);
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xfer->nframes = 1;
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USB_BUS_UNLOCK(udev->bus);
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usb2_start_hardware(xfer);
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USB_BUS_LOCK(udev->bus);
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break;
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}
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pipe++;
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if (--to)
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goto tr_setup;
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break;
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default:
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if (xfer->error == USB_ERR_CANCELLED) {
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break;
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}
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goto tr_setup;
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}
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/* store current pipe */
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udev->pipe_curr = pipe;
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USB_BUS_UNLOCK(udev->bus);
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}
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static usb_handle_req_t *
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usb2_get_hr_func(struct usb_device *udev)
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{
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/* figure out if there is a Handle Request function */
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if (udev->flags.usb_mode == USB_MODE_DEVICE)
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return (usb2_temp_get_desc_p);
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else if (udev->parent_hub == NULL)
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return (udev->bus->methods->roothub_exec);
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else
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return (NULL);
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}
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/*------------------------------------------------------------------------*
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* usb2_do_request_flags and usb2_do_request
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*
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* Description of arguments passed to these functions:
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*
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* "udev" - this is the "usb_device" structure pointer on which the
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* request should be performed. It is possible to call this function
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* in both Host Side mode and Device Side mode.
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*
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* "mtx" - if this argument is non-NULL the mutex pointed to by it
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* will get dropped and picked up during the execution of this
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* function, hence this function sometimes needs to sleep. If this
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* argument is NULL it has no effect.
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*
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* "req" - this argument must always be non-NULL and points to an
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* 8-byte structure holding the USB request to be done. The USB
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* request structure has a bit telling the direction of the USB
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* request, if it is a read or a write.
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*
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* "data" - if the "wLength" part of the structure pointed to by "req"
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* is non-zero this argument must point to a valid kernel buffer which
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* can hold at least "wLength" bytes. If "wLength" is zero "data" can
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* be NULL.
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*
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* "flags" - here is a list of valid flags:
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*
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* o USB_SHORT_XFER_OK: allows the data transfer to be shorter than
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* specified
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*
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* o USB_DELAY_STATUS_STAGE: allows the status stage to be performed
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* at a later point in time. This is tunable by the "hw.usb.ss_delay"
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* sysctl. This flag is mostly useful for debugging.
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*
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* o USB_USER_DATA_PTR: treat the "data" pointer like a userland
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* pointer.
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*
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* "actlen" - if non-NULL the actual transfer length will be stored in
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* the 16-bit unsigned integer pointed to by "actlen". This
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* information is mostly useful when the "USB_SHORT_XFER_OK" flag is
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* used.
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*
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* "timeout" - gives the timeout for the control transfer in
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* milliseconds. A "timeout" value less than 50 milliseconds is
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* treated like a 50 millisecond timeout. A "timeout" value greater
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* than 30 seconds is treated like a 30 second timeout. This USB stack
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* does not allow control requests without a timeout.
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*
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* NOTE: This function is thread safe. All calls to
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* "usb2_do_request_flags" will be serialised by the use of an
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* internal "sx_lock".
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*
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* Returns:
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* 0: Success
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* Else: Failure
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*------------------------------------------------------------------------*/
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usb_error_t
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usb2_do_request_flags(struct usb_device *udev, struct mtx *mtx,
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struct usb_device_request *req, void *data, uint16_t flags,
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uint16_t *actlen, usb_timeout_t timeout)
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{
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usb_handle_req_t *hr_func;
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struct usb_xfer *xfer;
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const void *desc;
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int err = 0;
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usb_ticks_t start_ticks;
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usb_ticks_t delta_ticks;
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usb_ticks_t max_ticks;
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uint16_t length;
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uint16_t temp;
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if (timeout < 50) {
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/* timeout is too small */
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timeout = 50;
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}
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if (timeout > 30000) {
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/* timeout is too big */
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timeout = 30000;
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}
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length = UGETW(req->wLength);
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DPRINTFN(5, "udev=%p bmRequestType=0x%02x bRequest=0x%02x "
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"wValue=0x%02x%02x wIndex=0x%02x%02x wLength=0x%02x%02x\n",
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udev, req->bmRequestType, req->bRequest,
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req->wValue[1], req->wValue[0],
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req->wIndex[1], req->wIndex[0],
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req->wLength[1], req->wLength[0]);
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/* Check if the device is still alive */
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if (udev->state < USB_STATE_POWERED) {
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DPRINTF("usb device has gone\n");
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return (USB_ERR_NOT_CONFIGURED);
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}
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/*
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* Set "actlen" to a known value in case the caller does not
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* check the return value:
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*/
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if (actlen)
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*actlen = 0;
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#if (USB_HAVE_USER_IO == 0)
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if (flags & USB_USER_DATA_PTR)
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return (USB_ERR_INVAL);
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#endif
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if (mtx) {
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mtx_unlock(mtx);
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if (mtx != &Giant) {
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mtx_assert(mtx, MA_NOTOWNED);
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}
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}
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/*
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* Grab the default sx-lock so that serialisation
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* is achieved when multiple threads are involved:
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*/
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sx_xlock(udev->default_sx);
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hr_func = usb2_get_hr_func(udev);
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if (hr_func != NULL) {
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DPRINTF("Handle Request function is set\n");
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desc = NULL;
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temp = 0;
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if (!(req->bmRequestType & UT_READ)) {
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if (length != 0) {
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DPRINTFN(1, "The handle request function "
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"does not support writing data!\n");
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err = USB_ERR_INVAL;
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goto done;
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}
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}
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/* The root HUB code needs the BUS lock locked */
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USB_BUS_LOCK(udev->bus);
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err = (hr_func) (udev, req, &desc, &temp);
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USB_BUS_UNLOCK(udev->bus);
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if (err)
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goto done;
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if (length > temp) {
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if (!(flags & USB_SHORT_XFER_OK)) {
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err = USB_ERR_SHORT_XFER;
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goto done;
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}
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length = temp;
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}
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if (actlen)
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*actlen = length;
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if (length > 0) {
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#if USB_HAVE_USER_IO
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if (flags & USB_USER_DATA_PTR) {
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if (copyout(desc, data, length)) {
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err = USB_ERR_INVAL;
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goto done;
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}
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} else
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#endif
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bcopy(desc, data, length);
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}
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goto done; /* success */
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}
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/*
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* Setup a new USB transfer or use the existing one, if any:
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*/
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usb2_default_transfer_setup(udev);
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xfer = udev->default_xfer[0];
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if (xfer == NULL) {
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/* most likely out of memory */
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err = USB_ERR_NOMEM;
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goto done;
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}
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USB_XFER_LOCK(xfer);
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if (flags & USB_DELAY_STATUS_STAGE)
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xfer->flags.manual_status = 1;
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else
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xfer->flags.manual_status = 0;
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if (flags & USB_SHORT_XFER_OK)
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xfer->flags.short_xfer_ok = 1;
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else
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xfer->flags.short_xfer_ok = 0;
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xfer->timeout = timeout;
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start_ticks = ticks;
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max_ticks = USB_MS_TO_TICKS(timeout);
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usb2_copy_in(xfer->frbuffers, 0, req, sizeof(*req));
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xfer->frlengths[0] = sizeof(*req);
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xfer->nframes = 2;
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while (1) {
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temp = length;
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if (temp > xfer->max_data_length) {
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temp = xfer->max_data_length;
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}
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xfer->frlengths[1] = temp;
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if (temp > 0) {
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if (!(req->bmRequestType & UT_READ)) {
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#if USB_HAVE_USER_IO
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if (flags & USB_USER_DATA_PTR) {
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USB_XFER_UNLOCK(xfer);
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err = usb2_copy_in_user(xfer->frbuffers + 1,
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0, data, temp);
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USB_XFER_LOCK(xfer);
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if (err) {
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err = USB_ERR_INVAL;
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break;
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}
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} else
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#endif
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usb2_copy_in(xfer->frbuffers + 1,
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0, data, temp);
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}
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xfer->nframes = 2;
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} else {
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if (xfer->frlengths[0] == 0) {
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if (xfer->flags.manual_status) {
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#if USB_DEBUG
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int temp;
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temp = usb2_ss_delay;
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if (temp > 5000) {
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temp = 5000;
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}
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if (temp > 0) {
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usb2_pause_mtx(
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xfer->xroot->xfer_mtx,
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USB_MS_TO_TICKS(temp));
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}
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#endif
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xfer->flags.manual_status = 0;
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} else {
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break;
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}
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}
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xfer->nframes = 1;
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}
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usb2_transfer_start(xfer);
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while (usb2_transfer_pending(xfer)) {
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usb2_cv_wait(udev->default_cv,
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xfer->xroot->xfer_mtx);
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}
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err = xfer->error;
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if (err) {
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break;
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}
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/* subtract length of SETUP packet, if any */
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if (xfer->aframes > 0) {
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xfer->actlen -= xfer->frlengths[0];
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} else {
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xfer->actlen = 0;
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}
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/* check for short packet */
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if (temp > xfer->actlen) {
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temp = xfer->actlen;
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length = temp;
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}
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if (temp > 0) {
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if (req->bmRequestType & UT_READ) {
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#if USB_HAVE_USER_IO
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if (flags & USB_USER_DATA_PTR) {
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USB_XFER_UNLOCK(xfer);
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err = usb2_copy_out_user(xfer->frbuffers + 1,
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0, data, temp);
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USB_XFER_LOCK(xfer);
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if (err) {
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err = USB_ERR_INVAL;
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break;
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}
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} else
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#endif
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usb2_copy_out(xfer->frbuffers + 1,
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0, data, temp);
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}
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}
|
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/*
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* Clear "frlengths[0]" so that we don't send the setup
|
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* packet again:
|
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*/
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xfer->frlengths[0] = 0;
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|
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/* update length and data pointer */
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length -= temp;
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data = USB_ADD_BYTES(data, temp);
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if (actlen) {
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(*actlen) += temp;
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}
|
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/* check for timeout */
|
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delta_ticks = ticks - start_ticks;
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if (delta_ticks > max_ticks) {
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if (!err) {
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err = USB_ERR_TIMEOUT;
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}
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}
|
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if (err) {
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break;
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}
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}
|
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|
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if (err) {
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/*
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* Make sure that the control endpoint is no longer
|
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* blocked in case of a non-transfer related error:
|
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*/
|
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usb2_transfer_stop(xfer);
|
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}
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USB_XFER_UNLOCK(xfer);
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done:
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sx_xunlock(udev->default_sx);
|
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|
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if (mtx) {
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mtx_lock(mtx);
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}
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return ((usb_error_t)err);
|
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}
|
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|
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/*------------------------------------------------------------------------*
|
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* usb2_do_request_proc - factored out code
|
|
*
|
|
* This function is factored out code. It does basically the same like
|
|
* usb2_do_request_flags, except it will check the status of the
|
|
* passed process argument before doing the USB request. If the
|
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* 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
|
|
usb2_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 (usb2_proc_is_gone(pproc)) {
|
|
err = USB_ERR_IOERROR;
|
|
goto done;
|
|
}
|
|
|
|
/* forward the USB request */
|
|
err = usb2_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);
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_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
|
|
usb2_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;
|
|
|
|
#if USB_DEBUG
|
|
uint16_t pr_poll_delay;
|
|
uint16_t pr_recovery_delay;
|
|
|
|
#endif
|
|
err = usb2_req_set_port_feature(udev, mtx, port, UHF_PORT_RESET);
|
|
if (err) {
|
|
goto done;
|
|
}
|
|
#if USB_DEBUG
|
|
/* range check input parameters */
|
|
pr_poll_delay = usb2_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 = usb2_pr_recovery_delay;
|
|
if (pr_recovery_delay > 1000) {
|
|
pr_recovery_delay = 1000;
|
|
}
|
|
#endif
|
|
n = 0;
|
|
while (1) {
|
|
#if USB_DEBUG
|
|
/* wait for the device to recover from reset */
|
|
usb2_pause_mtx(mtx, USB_MS_TO_TICKS(pr_poll_delay));
|
|
n += pr_poll_delay;
|
|
#else
|
|
/* wait for the device to recover from reset */
|
|
usb2_pause_mtx(mtx, USB_MS_TO_TICKS(USB_PORT_RESET_DELAY));
|
|
n += USB_PORT_RESET_DELAY;
|
|
#endif
|
|
err = usb2_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 = usb2_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;
|
|
}
|
|
#if USB_DEBUG
|
|
/* wait for the device to recover from reset */
|
|
usb2_pause_mtx(mtx, USB_MS_TO_TICKS(pr_recovery_delay));
|
|
#else
|
|
/* wait for the device to recover from reset */
|
|
usb2_pause_mtx(mtx, USB_MS_TO_TICKS(USB_PORT_RESET_RECOVERY));
|
|
#endif
|
|
|
|
done:
|
|
DPRINTFN(2, "port %d reset returning error=%s\n",
|
|
port, usb2_errstr(err));
|
|
return (err);
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_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
|
|
usb2_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 = usb2_do_request_flags(udev, mtx, &req,
|
|
desc, 0, NULL, 1000);
|
|
|
|
if (err) {
|
|
if (!retries) {
|
|
goto done;
|
|
}
|
|
retries--;
|
|
|
|
usb2_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);
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_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
|
|
usb2_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 = usb2_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);
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_get_string_desc
|
|
*
|
|
* If you don't know the language ID, consider using
|
|
* "usb2_req_get_string_any()".
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_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 (usb2_req_get_desc(udev, mtx, NULL, sdesc, 2, max_len, lang_id,
|
|
UDESC_STRING, string_index, 0));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_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
|
|
usb2_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 = usb2_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);
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_get_config_desc
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_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 = usb2_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);
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_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
|
|
usb2_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 = usb2_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 = usb2_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 */
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_get_device_desc
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_req_get_device_desc(struct usb_device *udev, struct mtx *mtx,
|
|
struct usb_device_descriptor *d)
|
|
{
|
|
DPRINTFN(4, "\n");
|
|
return (usb2_req_get_desc(udev, mtx, NULL, d, sizeof(*d),
|
|
sizeof(*d), 0, UDESC_DEVICE, 0, 3));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_get_alt_interface_no
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_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 = usb2_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 (usb2_do_request(udev, mtx, &req, alt_iface_no));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_set_alt_interface_no
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_req_set_alt_interface_no(struct usb_device *udev, struct mtx *mtx,
|
|
uint8_t iface_index, uint8_t alt_no)
|
|
{
|
|
struct usb_interface *iface = usb2_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 (usb2_do_request(udev, mtx, &req, 0));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_get_device_status
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_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 (usb2_do_request(udev, mtx, &req, st));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_get_hub_descriptor
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_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 (usb2_do_request(udev, mtx, &req, hd));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_get_hub_status
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_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 (usb2_do_request(udev, mtx, &req, st));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_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
|
|
usb2_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 (usb2_do_request_flags(udev, mtx, &req, NULL,
|
|
USB_DELAY_STATUS_STAGE, NULL, 1000));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_get_port_status
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_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 (usb2_do_request(udev, mtx, &req, ps));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_clear_hub_feature
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_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 (usb2_do_request(udev, mtx, &req, 0));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_set_hub_feature
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_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 (usb2_do_request(udev, mtx, &req, 0));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_clear_port_feature
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_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 (usb2_do_request(udev, mtx, &req, 0));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_set_port_feature
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_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 (usb2_do_request(udev, mtx, &req, 0));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_set_protocol
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_req_set_protocol(struct usb_device *udev, struct mtx *mtx,
|
|
uint8_t iface_index, uint16_t report)
|
|
{
|
|
struct usb_interface *iface = usb2_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 (usb2_do_request(udev, mtx, &req, 0));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_set_report
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_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 = usb2_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 (usb2_do_request(udev, mtx, &req, data));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_get_report
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_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 = usb2_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 (usb2_do_request(udev, mtx, &req, data));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_set_idle
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_req_set_idle(struct usb_device *udev, struct mtx *mtx,
|
|
uint8_t iface_index, uint8_t duration, uint8_t id)
|
|
{
|
|
struct usb_interface *iface = usb2_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 (usb2_do_request(udev, mtx, &req, 0));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_get_report_descriptor
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_req_get_report_descriptor(struct usb_device *udev, struct mtx *mtx,
|
|
void *d, uint16_t size, uint8_t iface_index)
|
|
{
|
|
struct usb_interface *iface = usb2_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 (usb2_do_request(udev, mtx, &req, d));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_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
|
|
usb2_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 (usb2_do_request(udev, mtx, &req, 0));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_get_config
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_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 (usb2_do_request(udev, mtx, &req, pconf));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_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
|
|
usb2_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 = usb2_req_reset_port(parent_hub, mtx, udev->port_no);
|
|
if (err) {
|
|
DPRINTFN(0, "addr=%d, port reset failed, %s\n",
|
|
old_addr, usb2_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 = usb2_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, usb2_errstr(err));
|
|
}
|
|
/* restore device address */
|
|
udev->address = old_addr;
|
|
|
|
/* allow device time to set new address */
|
|
usb2_pause_mtx(mtx, USB_MS_TO_TICKS(USB_SET_ADDRESS_SETTLE));
|
|
|
|
/* get the device descriptor */
|
|
err = usb2_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,
|
|
usb2_errstr(err));
|
|
goto done;
|
|
}
|
|
/* get the full device descriptor */
|
|
err = usb2_req_get_device_desc(udev, mtx, &udev->ddesc);
|
|
if (err) {
|
|
DPRINTFN(0, "addr=%d, getting device "
|
|
"descriptor failed, %s!\n", old_addr,
|
|
usb2_errstr(err));
|
|
goto done;
|
|
}
|
|
done:
|
|
if (err && do_retry) {
|
|
/* give the USB firmware some time to load */
|
|
usb2_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);
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_clear_device_feature
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_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 (usb2_do_request(udev, mtx, &req, 0));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*
|
|
* usb2_req_set_device_feature
|
|
*
|
|
* Returns:
|
|
* 0: Success
|
|
* Else: Failure
|
|
*------------------------------------------------------------------------*/
|
|
usb_error_t
|
|
usb2_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 (usb2_do_request(udev, mtx, &req, 0));
|
|
}
|