freebsd-dev/sys/dev/usb/usb_freebsd.h
Hans Petter Selasky a5cf1aaaff Add support for the so-called streams feature of BULK endpoints
in SUPER-speed mode, USB 3.0.

This feature has not been tested yet, due to lack of hardware.

This feature is useful when implementing protocols like UASP,
USB attached SCSI which promises higher USB mass storage throughput.

This patch also implements support for hardware processing of endpoints
for increased performance. The switching to hardware processing
of an endpoint is done via a callback to the USB controller driver. The
stream feature is implemented like a variant of a hardware USB protocol.

USB controller drivers implementing device mode needs to be updated to
implement the new "xfer_stall" USB controller method and remove the
"xfer" argument from the "set_stall" method.

The API's toward existing USB drivers are preserved. To setup a USB transfer
in stream mode, set the "stream_id" field of the USB config structure to
the desired value.

The maximum number of BULK streams is currently hardcoded and limited to 8
via a define in usb_freebsd.h.

All USB drivers should be re-compiled after this change.

LibUSB will be updated next week to support streams mode. A new IOCTL to
setup BULK streams as already been implemented. The ugen device nodes
currently only supports stream ID zero.

The FreeBSD version has been bumped.

MFC after:	2 weeks
2012-08-12 17:53:06 +00:00

83 lines
3.1 KiB
C

/* $FreeBSD$ */
/*-
* 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.
*/
/*
* Including this file is mandatory for all USB related c-files in the kernel.
*/
#ifndef _USB_FREEBSD_H_
#define _USB_FREEBSD_H_
/* Default USB configuration */
#define USB_HAVE_UGEN 1
#define USB_HAVE_DEVCTL 1
#define USB_HAVE_BUSDMA 1
#define USB_HAVE_COMPAT_LINUX 1
#define USB_HAVE_USER_IO 1
#define USB_HAVE_MBUF 1
#define USB_HAVE_TT_SUPPORT 1
#define USB_HAVE_POWERD 1
#define USB_HAVE_MSCTEST 1
#define USB_HAVE_PF 1
#define USB_TD_GET_PROC(td) (td)->td_proc
#define USB_PROC_GET_GID(td) (td)->p_pgid
#if (!defined(USB_HOST_ALIGN)) || (USB_HOST_ALIGN <= 0)
/* Use default value. */
#undef USB_HOST_ALIGN
#define USB_HOST_ALIGN 8 /* bytes, must be power of two */
#endif
/* Sanity check for USB_HOST_ALIGN: Verify power of two. */
#if ((-USB_HOST_ALIGN) & USB_HOST_ALIGN) != USB_HOST_ALIGN
#error "USB_HOST_ALIGN is not power of two."
#endif
#define USB_FS_ISOC_UFRAME_MAX 4 /* exclusive unit */
#define USB_BUS_MAX 256 /* units */
#define USB_MAX_DEVICES 128 /* units */
#define USB_IFACE_MAX 32 /* units */
#define USB_FIFO_MAX 128 /* units */
#define USB_MAX_EP_STREAMS 8 /* units */
#define USB_MAX_FS_ISOC_FRAMES_PER_XFER (120) /* units */
#define USB_MAX_HS_ISOC_FRAMES_PER_XFER (8*120) /* units */
#define USB_HUB_MAX_DEPTH 5
#define USB_EP0_BUFSIZE 1024 /* bytes */
#define USB_CS_RESET_LIMIT 20 /* failures = 20 * 50 ms = 1sec */
#define USB_MAX_AUTO_QUIRK 4 /* maximum number of dynamic quirks */
typedef uint32_t usb_timeout_t; /* milliseconds */
typedef uint32_t usb_frlength_t; /* bytes */
typedef uint32_t usb_frcount_t; /* units */
typedef uint32_t usb_size_t; /* bytes */
typedef uint32_t usb_ticks_t; /* system defined */
typedef uint16_t usb_power_mask_t; /* see "USB_HW_POWER_XXX" */
typedef uint16_t usb_stream_t; /* stream ID */
#endif /* _USB_FREEBSD_H_ */