cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

usb_stream.h (1954B)

      1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
      2/*
      3 * Copyright (C) 2007, 2008 Karsten Wiese <fzu@wemgehoertderstaat.de>
      4 *
      5 * This program is free software; you can redistribute it and/or modify it
      6 * under the terms of the GNU General Public License as published by the
      7 * Free Software Foundation; either version 2 of the License, or (at your
      8 * option) any later version.
      9 *
     10 * This program is distributed in the hope that it will be useful, but
     11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
     12 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     13 * for more details.
     14 *
     15 * You should have received a copy of the GNU General Public License
     16 * along with this program; if not, write to the Free Software Foundation,
     17 * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
     18 */
     19
     20#ifndef _UAPI__SOUND_USB_STREAM_H
     21#define _UAPI__SOUND_USB_STREAM_H
     22
     23#define USB_STREAM_INTERFACE_VERSION 2
     24
     25#define SNDRV_USB_STREAM_IOCTL_SET_PARAMS \
     26	_IOW('H', 0x90, struct usb_stream_config)
     27
     28struct usb_stream_packet {
     29	unsigned offset;
     30	unsigned length;
     31};
     32
     33
     34struct usb_stream_config {
     35	unsigned version;
     36	unsigned sample_rate;
     37	unsigned period_frames;
     38	unsigned frame_size;
     39};
     40
     41struct usb_stream {
     42	struct usb_stream_config cfg;
     43	unsigned read_size;
     44	unsigned write_size;
     45
     46	int period_size;
     47
     48	unsigned state;
     49
     50	int idle_insize;
     51	int idle_outsize;
     52	int sync_packet;
     53	unsigned insize_done;
     54	unsigned periods_done;
     55	unsigned periods_polled;
     56
     57	struct usb_stream_packet outpacket[2];
     58	unsigned		 inpackets;
     59	unsigned		 inpacket_head;
     60	unsigned		 inpacket_split;
     61	unsigned		 inpacket_split_at;
     62	unsigned		 next_inpacket_split;
     63	unsigned		 next_inpacket_split_at;
     64	struct usb_stream_packet inpacket[0];
     65};
     66
     67enum usb_stream_state {
     68	usb_stream_invalid,
     69	usb_stream_stopped,
     70	usb_stream_sync0,
     71	usb_stream_sync1,
     72	usb_stream_ready,
     73	usb_stream_running,
     74	usb_stream_xrun,
     75};
     76
     77#endif /* _UAPI__SOUND_USB_STREAM_H */