559 lines
16 KiB
C
559 lines
16 KiB
C
/* $FreeBSD$ */
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/*-
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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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/*
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* Including this file is mandatory for all USB related c-files in the kernel.
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*/
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#ifndef _USB2_CORE_H_
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#define _USB2_CORE_H_
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#define USB_STACK_VERSION 2000 /* 2.0 */
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/* Allow defines in "opt_usb.h" to override configuration */
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#include "opt_usb.h"
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#include "opt_bus.h"
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/* Default USB configuration */
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/*
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* The following macro defines if the code shall use cv_xxx() instead
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* of msleep() and wakeup().
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*/
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#ifndef USB_HAVE_CONDVAR
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#define USB_HAVE_CONDVAR 0
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#endif
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/*
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* The following macro defines if the code shall support
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* /dev/usb/x.y.z.
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*/
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#ifndef USB_HAVE_UGEN
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#define USB_HAVE_UGEN 1
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#endif
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/*
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* The following macro defines if the code shall support any forms of
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* ASCII strings.
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*/
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#ifndef USB_HAVE_STRINGS
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#define USB_HAVE_STRINGS 1
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#endif
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/*
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* The following macro defines if the code shall support BUS-DMA.
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*/
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#ifndef USB_HAVE_BUSDMA
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#define USB_HAVE_BUSDMA 1
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#endif
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/*
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* The following macro defines if the code shall support the Linux
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* compatibility layer.
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*/
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#ifndef USB_HAVE_COMPAT_LINUX
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#define USB_HAVE_COMPAT_LINUX 1
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#endif
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/*
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* The following macro defines if the code shall support
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* userland data transfer via copyin() and copyout()
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*/
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#ifndef USB_HAVE_USER_IO
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#define USB_HAVE_USER_IO 1
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#endif
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/*
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* The following macro defines if the code shall support copy in via
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* bsd-mbufs to USB.
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*/
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#ifndef USB_HAVE_MBUF
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#define USB_HAVE_MBUF 1
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#endif
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/*
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* The following macro defines if the code shall compile a table
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* describing USB vendor and product IDs.
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*/
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#ifndef USB_VERBOSE
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#define USB_VERBOSE 1
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#endif
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/*
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* The following macro defines if USB debugging support shall be
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* compiled for the USB core and all drivers.
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*/
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#ifndef USB_DEBUG
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#define USB_DEBUG 1
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#endif
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/*
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* The following macro defines if USB transaction translator support
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* shall be supported for the USB HUB and USB controller drivers.
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*/
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#ifndef USB_HAVE_TT_SUPPORT
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#define USB_HAVE_TT_SUPPORT 1
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#endif
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/*
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* The following macro defines if the USB power daemon shall
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* be supported in the USB core.
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*/
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#ifndef USB_HAVE_POWERD
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#define USB_HAVE_POWERD 1
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#endif
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/*
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* The following macro defines if the USB autoinstall detection shall
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* be supported in the USB core.
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*/
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#ifndef USB_HAVE_MSCTEST
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#define USB_HAVE_MSCTEST 1
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#endif
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#ifndef USB_TD_GET_PROC
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#define USB_TD_GET_PROC(td) (td)->td_proc
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#endif
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#ifndef USB_PROC_GET_GID
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#define USB_PROC_GET_GID(td) (td)->p_pgid
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#endif
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/* Include files */
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#include <sys/stdint.h>
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#include <sys/stddef.h>
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/types.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/linker_set.h>
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#include <sys/module.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/condvar.h>
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#include <sys/sysctl.h>
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#include <sys/sx.h>
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#include <sys/unistd.h>
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#include <sys/callout.h>
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#include <sys/malloc.h>
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#include <sys/priv.h>
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#include <dev/usb/usb_defs.h>
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#include <dev/usb/usb_revision.h>
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#include "usb_if.h"
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#ifndef USB_HOST_ALIGN
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#define USB_HOST_ALIGN 8 /* bytes, must be power of two */
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#endif
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#ifndef USB_FS_ISOC_UFRAME_MAX
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#define USB_FS_ISOC_UFRAME_MAX 4 /* exclusive unit */
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#endif
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#if (USB_FS_ISOC_UFRAME_MAX > 6)
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#error "USB_FS_ISOC_UFRAME_MAX cannot be set higher than 6"
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#endif
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#ifndef USB_BUS_MAX
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#define USB_BUS_MAX 256 /* units */
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#endif
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#ifndef USB_MAX_DEVICES
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#define USB_MAX_DEVICES 128 /* units */
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#endif
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#if (USB_MAX_DEVICES < USB_MIN_DEVICES)
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#error "Minimum number of devices is greater than maximum number of devices."
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#endif
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#ifndef USB_IFACE_MAX
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#define USB_IFACE_MAX 32 /* units */
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#endif
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#ifndef USB_FIFO_MAX
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#define USB_FIFO_MAX 128 /* units */
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#endif
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#if (USB_FIFO_MAX & 1)
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#error "Number of FIFOs must be odd."
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#endif
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#define USB_MAX_FS_ISOC_FRAMES_PER_XFER (120) /* units */
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#define USB_MAX_HS_ISOC_FRAMES_PER_XFER (8*120) /* units */
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#ifndef USB_HUB_MAX_DEPTH
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#define USB_HUB_MAX_DEPTH 5
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#endif
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#ifndef USB_EP0_BUFSIZE
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#define USB_EP0_BUFSIZE 1024 /* bytes */
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#endif
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/* USB transfer states */
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#define USB_ST_SETUP 0
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#define USB_ST_TRANSFERRED 1
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#define USB_ST_ERROR 2
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/*
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* The following macro will return the current state of an USB
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* transfer like defined by the "USB_ST_XXX" enums.
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*/
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#define USB_GET_STATE(xfer) ((xfer)->usb2_state)
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/*
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* The following macro will tell if an USB transfer is currently
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* receiving or transferring data.
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*/
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#define USB_GET_DATA_ISREAD(xfer) ((xfer)->flags_int.usb_mode == \
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USB_MODE_DEVICE ? (((xfer)->endpoint & UE_DIR_IN) ? 0 : 1) : \
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(((xfer)->endpoint & UE_DIR_IN) ? 1 : 0))
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/*
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* The following macros are used used to convert milliseconds into
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* HZ. We use 1024 instead of 1000 milliseconds per second to save a
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* full division.
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*/
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#define USB_MS_HZ 1024
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#define USB_MS_TO_TICKS(ms) \
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(((uint32_t)((((uint32_t)(ms)) * ((uint32_t)(hz))) + USB_MS_HZ - 1)) / USB_MS_HZ)
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/* macros */
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#define usb2_callout_init_mtx(c,m,f) callout_init_mtx(&(c)->co,m,f)
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#define usb2_callout_reset(c,t,f,d) callout_reset(&(c)->co,t,f,d)
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#define usb2_callout_stop(c) callout_stop(&(c)->co)
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#define usb2_callout_drain(c) callout_drain(&(c)->co)
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#define usb2_callout_pending(c) callout_pending(&(c)->co)
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#define USB_BUS_LOCK(_b) mtx_lock(&(_b)->bus_mtx)
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#define USB_BUS_UNLOCK(_b) mtx_unlock(&(_b)->bus_mtx)
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#define USB_BUS_LOCK_ASSERT(_b, _t) mtx_assert(&(_b)->bus_mtx, _t)
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#define USB_XFER_LOCK(_x) mtx_lock((_x)->xroot->xfer_mtx)
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#define USB_XFER_UNLOCK(_x) mtx_unlock((_x)->xroot->xfer_mtx)
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#define USB_XFER_LOCK_ASSERT(_x, _t) mtx_assert((_x)->xroot->xfer_mtx, _t)
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/* structure prototypes */
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struct file;
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struct usb2_bus;
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struct usb2_device;
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struct usb2_device_request;
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struct usb2_page;
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struct usb2_page_cache;
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struct usb2_xfer;
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struct usb2_xfer_root;
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/* typedefs */
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typedef void (usb2_callback_t)(struct usb2_xfer *);
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#ifndef USB_HAVE_USB_ERROR_T
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typedef uint8_t usb2_error_t; /* see "USB_ERR_XXX" */
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#endif
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#ifndef USB_HAVE_TIMEOUT_T
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typedef uint32_t usb2_timeout_t; /* milliseconds */
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#endif
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#ifndef USB_HAVE_FRLENGTH_T
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typedef uint32_t usb2_frlength_t; /* bytes */
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#endif
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#ifndef USB_HAVE_FRCOUNT_T
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typedef uint32_t usb2_frcount_t; /* units */
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#endif
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#ifndef USB_HAVE_SIZE_T
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typedef uint32_t usb2_size_t; /* bytes */
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#endif
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#ifndef USB_HAVE_TICKS_T
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typedef uint32_t usb2_ticks_t; /* system defined */
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#endif
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#ifndef USB_HAVE_POWER_MASK_T
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typedef uint16_t usb2_power_mask_t; /* see "USB_HW_POWER_XXX" */
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#endif
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typedef usb2_error_t (usb2_handle_request_t)(struct usb2_device *,
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struct usb2_device_request *, const void **, uint16_t *);
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/* structures */
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/*
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* Common queue structure for USB transfers.
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*/
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struct usb2_xfer_queue {
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TAILQ_HEAD(, usb2_xfer) head;
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struct usb2_xfer *curr; /* current USB transfer processed */
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void (*command) (struct usb2_xfer_queue *pq);
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uint8_t recurse_1:1;
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uint8_t recurse_2:1;
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};
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/*
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* The following is a wrapper for the callout structure to ease
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* porting the code to other platforms.
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*/
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struct usb2_callout {
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struct callout co;
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};
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/*
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* The following structure defines a set of USB transfer flags.
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*/
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struct usb2_xfer_flags {
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uint8_t force_short_xfer:1; /* force a short transmit transfer
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* last */
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uint8_t short_xfer_ok:1; /* allow short receive transfers */
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uint8_t short_frames_ok:1; /* allow short frames */
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uint8_t pipe_bof:1; /* block pipe on failure */
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uint8_t proxy_buffer:1; /* makes buffer size a factor of
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* "max_frame_size" */
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uint8_t ext_buffer:1; /* uses external DMA buffer */
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uint8_t manual_status:1; /* non automatic status stage on
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* control transfers */
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uint8_t no_pipe_ok:1; /* set if "USB_ERR_NO_PIPE" error can
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* be ignored */
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uint8_t stall_pipe:1; /* set if the endpoint belonging to
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* this USB transfer should be stalled
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* before starting this transfer! */
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};
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/*
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* The following structure defines a set of internal USB transfer
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* flags.
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*/
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struct usb2_xfer_flags_int {
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enum usb_hc_mode usb_mode; /* shadow copy of "udev->usb_mode" */
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uint16_t control_rem; /* remainder in bytes */
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uint8_t open:1; /* set if USB pipe has been opened */
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uint8_t transferring:1; /* set if an USB transfer is in
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* progress */
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uint8_t did_dma_delay:1; /* set if we waited for HW DMA */
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uint8_t did_close:1; /* set if we closed the USB transfer */
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uint8_t draining:1; /* set if we are draining an USB
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* transfer */
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uint8_t started:1; /* keeps track of started or stopped */
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uint8_t bandwidth_reclaimed:1;
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uint8_t control_xfr:1; /* set if control transfer */
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uint8_t control_hdr:1; /* set if control header should be
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* sent */
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uint8_t control_act:1; /* set if control transfer is active */
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uint8_t short_frames_ok:1; /* filtered version */
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uint8_t short_xfer_ok:1; /* filtered version */
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#if USB_HAVE_BUSDMA
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uint8_t bdma_enable:1; /* filtered version (only set if
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* hardware supports DMA) */
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uint8_t bdma_no_post_sync:1; /* set if the USB callback wrapper
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* should not do the BUS-DMA post sync
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* operation */
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uint8_t bdma_setup:1; /* set if BUS-DMA has been setup */
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#endif
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uint8_t isochronous_xfr:1; /* set if isochronous transfer */
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uint8_t curr_dma_set:1; /* used by USB HC/DC driver */
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uint8_t can_cancel_immed:1; /* set if USB transfer can be
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* cancelled immediately */
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};
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/*
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* The following structure define an USB configuration, that basically
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* is used when setting up an USB transfer.
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*/
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struct usb2_config {
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usb2_callback_t *callback; /* USB transfer callback */
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usb2_frlength_t bufsize; /* total pipe buffer size in bytes */
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usb2_frcount_t frames; /* maximum number of USB frames */
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usb2_timeout_t interval; /* interval in milliseconds */
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#define USB_DEFAULT_INTERVAL 0
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usb2_timeout_t timeout; /* transfer timeout in milliseconds */
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struct usb2_xfer_flags flags; /* transfer flags */
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enum usb_hc_mode usb_mode; /* host or device mode */
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uint8_t type; /* pipe type */
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uint8_t endpoint; /* pipe number */
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uint8_t direction; /* pipe direction */
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uint8_t ep_index; /* pipe index match to use */
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uint8_t if_index; /* "ifaces" index to use */
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};
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/*
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* The following structure defines an USB transfer.
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*/
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struct usb2_xfer {
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struct usb2_callout timeout_handle;
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TAILQ_ENTRY(usb2_xfer) wait_entry; /* used at various places */
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struct usb2_page_cache *buf_fixup; /* fixup buffer(s) */
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struct usb2_xfer_queue *wait_queue; /* pointer to queue that we
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* are waiting on */
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struct usb2_page *dma_page_ptr;
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struct usb2_pipe *pipe; /* our USB pipe */
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struct usb2_xfer_root *xroot; /* used by HC driver */
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void *qh_start[2]; /* used by HC driver */
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void *td_start[2]; /* used by HC driver */
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void *td_transfer_first; /* used by HC driver */
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void *td_transfer_last; /* used by HC driver */
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void *td_transfer_cache; /* used by HC driver */
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void *priv_sc; /* device driver data pointer 1 */
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void *priv_fifo; /* device driver data pointer 2 */
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void *local_buffer;
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usb2_frlength_t *frlengths;
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struct usb2_page_cache *frbuffers;
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usb2_callback_t *callback;
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usb2_frlength_t max_hc_frame_size;
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usb2_frlength_t max_data_length;
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usb2_frlength_t sumlen; /* sum of all lengths in bytes */
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usb2_frlength_t actlen; /* actual length in bytes */
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usb2_timeout_t timeout; /* milliseconds */
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#define USB_NO_TIMEOUT 0
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#define USB_DEFAULT_TIMEOUT 5000 /* 5000 ms = 5 seconds */
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usb2_frcount_t max_frame_count; /* initial value of "nframes" after
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* setup */
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usb2_frcount_t nframes; /* number of USB frames to transfer */
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usb2_frcount_t aframes; /* actual number of USB frames
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* transferred */
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uint16_t max_packet_size;
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uint16_t max_frame_size;
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uint16_t qh_pos;
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uint16_t isoc_time_complete; /* in ms */
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usb2_timeout_t interval; /* milliseconds */
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uint8_t address; /* physical USB address */
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uint8_t endpoint; /* physical USB endpoint */
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uint8_t max_packet_count;
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uint8_t usb2_smask;
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uint8_t usb2_cmask;
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uint8_t usb2_uframe;
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uint8_t usb2_state;
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usb2_error_t error;
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struct usb2_xfer_flags flags;
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struct usb2_xfer_flags_int flags_int;
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};
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/*
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* The following structure keeps information that is used to match
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* against an array of "usb2_device_id" elements.
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*/
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struct usb2_lookup_info {
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uint16_t idVendor;
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uint16_t idProduct;
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uint16_t bcdDevice;
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uint8_t bDeviceClass;
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uint8_t bDeviceSubClass;
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uint8_t bDeviceProtocol;
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uint8_t bInterfaceClass;
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uint8_t bInterfaceSubClass;
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uint8_t bInterfaceProtocol;
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uint8_t bIfaceIndex;
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uint8_t bIfaceNum;
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uint8_t bConfigIndex;
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uint8_t bConfigNum;
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};
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/* Structure used by probe and attach */
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struct usb2_attach_arg {
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struct usb2_lookup_info info;
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device_t temp_dev; /* for internal use */
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const void *driver_info; /* for internal use */
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struct usb2_device *device; /* current device */
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struct usb2_interface *iface; /* current interface */
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enum usb_hc_mode usb_mode; /* host or device mode */
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uint8_t port;
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uint8_t use_generic; /* hint for generic drivers */
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};
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/* external variables */
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MALLOC_DECLARE(M_USB);
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MALLOC_DECLARE(M_USBDEV);
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MALLOC_DECLARE(M_USBHC);
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extern struct mtx usb2_ref_lock;
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/* typedefs */
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typedef struct malloc_type *usb2_malloc_type;
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/* prototypes */
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const char *usb2_errstr(usb2_error_t error);
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const char *usb2_statestr(enum usb2_dev_state state);
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struct usb2_config_descriptor *usb2_get_config_descriptor(
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struct usb2_device *udev);
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struct usb2_device_descriptor *usb2_get_device_descriptor(
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struct usb2_device *udev);
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struct usb2_interface *usb2_get_iface(struct usb2_device *udev,
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uint8_t iface_index);
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struct usb2_interface_descriptor *usb2_get_interface_descriptor(
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struct usb2_interface *iface);
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uint8_t usb2_clear_stall_callback(struct usb2_xfer *xfer1,
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struct usb2_xfer *xfer2);
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uint8_t usb2_get_interface_altindex(struct usb2_interface *iface);
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usb2_error_t usb2_set_alt_interface_index(struct usb2_device *udev,
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uint8_t iface_index, uint8_t alt_index);
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enum usb_hc_mode usb2_get_mode(struct usb2_device *udev);
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uint8_t usb2_get_speed(struct usb2_device *udev);
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uint32_t usb2_get_isoc_fps(struct usb2_device *udev);
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usb2_error_t usb2_transfer_setup(struct usb2_device *udev,
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const uint8_t *ifaces, struct usb2_xfer **pxfer,
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const struct usb2_config *setup_start, uint16_t n_setup,
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void *priv_sc, struct mtx *priv_mtx);
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void usb2_set_frame_data(struct usb2_xfer *xfer, void *ptr,
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usb2_frcount_t frindex);
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void usb2_set_frame_offset(struct usb2_xfer *xfer, usb2_frlength_t offset,
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usb2_frcount_t frindex);
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void usb2_start_hardware(struct usb2_xfer *xfer);
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void usb2_transfer_clear_stall(struct usb2_xfer *xfer);
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void usb2_transfer_drain(struct usb2_xfer *xfer);
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void usb2_transfer_set_stall(struct usb2_xfer *xfer);
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uint8_t usb2_transfer_pending(struct usb2_xfer *xfer);
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void usb2_transfer_start(struct usb2_xfer *xfer);
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void usb2_transfer_stop(struct usb2_xfer *xfer);
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void usb2_transfer_unsetup(struct usb2_xfer **pxfer, uint16_t n_setup);
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void usb2_set_parent_iface(struct usb2_device *udev, uint8_t iface_index,
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uint8_t parent_index);
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uint8_t usb2_get_bus_index(struct usb2_device *udev);
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uint8_t usb2_get_device_index(struct usb2_device *udev);
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void usb2_set_power_mode(struct usb2_device *udev, uint8_t power_mode);
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uint8_t usb2_device_attached(struct usb2_device *udev);
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#endif /* _USB2_CORE_H_ */
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