1818bfe1cb
The PN533 is known to mishandle the USB toggle bit, causing replies to be filtered out by the host controller. As a result, the kernel sees a timed out operation. Vendor errata suggests that userland applications should detect the situation on read timeout, and write a dumy frame to resync the toggle bit. NFC Tools's libnfc does just that, but in order to succeed, the dummy frame write must not be reported as timed out. We therefore introduce a new USB quirk for devices known to miss output acks. When that occur, we pretend that the operation succeeded, leaving userland the duty to check that everything went okay. This workaround lets libnfc recover from interrupted communications without the need te reboot the system.
61 lines
3.2 KiB
C
61 lines
3.2 KiB
C
/* $NetBSD: usb_quirks.h,v 1.29 2018/11/15 02:35:23 manu Exp $ */
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/* $FreeBSD: src/sys/dev/usb/usb_quirks.h,v 1.9 1999/11/12 23:31:03 n_hibma Exp $ */
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/*
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Lennart Augustsson (lennart@augustsson.net) at
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* Carlstedt Research & Technology.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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struct usbd_quirks {
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uint32_t uq_flags; /* Device problems: */
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#define UQ_NO_SET_PROTO 0x0001 /* cannot handle SET PROTOCOL. */
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#define UQ_SWAP_UNICODE 0x0002 /* has some Unicode strings swapped. */
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#define UQ_MS_REVZ 0x0004 /* mouse has Z-axis reversed */
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#define UQ_NO_STRINGS 0x0008 /* string descriptors are broken. */
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#define UQ_BAD_ADC 0x0010 /* bad audio spec version number. */
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#define UQ_BAD_AUDIO 0x0040 /* device claims audio class, but isn't */
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#define UQ_SPUR_BUT_UP 0x0080 /* spurious mouse button up events */
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#define UQ_AU_NO_XU 0x0100 /* audio device has broken extension unit */
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#define UQ_AU_NO_FRAC 0x0400 /* don't adjust for fractional samples */
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#define UQ_AU_INP_ASYNC 0x0800 /* input is async despite claim of adaptive */
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#define UQ_ASSUME_CM_OVER_DATA 0x1000 /* modem device breaks on cm over data */
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#define UQ_BROKEN_BIDIR 0x2000 /* printer has broken bidir mode */
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#define UQ_HID_IGNORE 0x4000 /* device should be ignored by hid class */
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#define UQ_NO_UNION_NRM 0x8000 /* has no normal UNION descriptor */
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#define UQ_LOST_CS_DESC 0x10000 /* look everywhere for the CS descriptors */
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#define UQ_APPLE_ISO 0x20000 /* force ISO layout on Apple keyboards */
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#define UQ_DESC_CORRUPT 0x40000 /* may corrupt its config descriptors */
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#define UQ_MISS_OUT_ACK 0x80000 /* may fail to ack output */
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const usb_descriptor_t **desc; /* Replacement for UQ_DESC_CORRUPT */
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};
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extern const struct usbd_quirks usbd_no_quirk;
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usbd_status usbd_get_desc_fake(struct usbd_device *, int, int, int, void *);
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const struct usbd_quirks *usbd_find_quirk(usb_device_descriptor_t *);
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