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/* $FreeBSD$ */
/*-
* 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.
*/
#ifndef _USB_BUS_H_
#define _USB_BUS_H_
/*
* The following structure defines the USB explore message sent to the USB
* explore process.
*/
struct usb_bus_msg {
struct usb_proc_msg hdr;
struct usb_bus *bus;
};
/*
* The following structure defines the USB statistics structure.
*/
struct usb_bus_stat {
uint32_t uds_requests[4];
};
/*
* The following structure defines an USB BUS. There is one USB BUS
* for every Host or Device controller.
*/
struct usb_bus {
struct usb_bus_stat stats_err;
struct usb_bus_stat stats_ok;
struct root_hold_token *bus_roothold;
/*
* There are two callback processes. One for Giant locked
* callbacks. One for non-Giant locked callbacks. This should
* avoid congestion and reduce response time in most cases.
*/
struct usb_process giant_callback_proc;
struct usb_process non_giant_callback_proc;
/* Explore process */
struct usb_process explore_proc;
/* Control request process */
struct usb_process control_xfer_proc;
struct usb_bus_msg explore_msg[2];
struct usb_bus_msg detach_msg[2];
struct usb_bus_msg attach_msg[2];
/*
* This mutex protects the USB hardware:
*/
struct mtx bus_mtx;
struct usb_xfer_queue intr_q;
struct usb_callout power_wdog; /* power management */
device_t parent;
device_t bdev; /* filled by HC driver */
#if USB_HAVE_BUSDMA
struct usb_dma_parent_tag dma_parent_tag[1];
struct usb_dma_tag dma_tags[USB_BUS_DMA_TAG_MAX];
#endif
struct usb_bus_methods *methods; /* filled by HC driver */
struct usb_device **devices;
usb_power_mask_t hw_power_state; /* see USB_HW_POWER_XXX */
usb_size_t uframe_usage[USB_HS_MICRO_FRAMES_MAX];
uint16_t isoc_time_last; /* in milliseconds */
uint8_t alloc_failed; /* Set if memory allocation failed. */
uint8_t driver_added_refcount; /* Current driver generation count */
enum usb_revision usbrev; /* USB revision. See "USB_REV_XXX". */
uint8_t devices_max; /* maximum number of USB devices */
uint8_t do_probe; /* set if USB BUS should be re-probed */
/*
* The scratch area can only be used inside the explore thread
* belonging to the give serial bus.
*/
union {
struct usb_hw_ep_scratch hw_ep_scratch[1];
struct usb_temp_setup temp_setup[1];
uint8_t data[255];
} scratch[1];
};
#endif /* _USB_BUS_H_ */
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