sys/bus/u4b/usb_bus.h

   1 /* $FreeBSD: head/sys/dev/usb/usb_bus.h 276717 2015-01-05 20:22:18Z hselasky $ */
   2 /*-
   3  * Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 #ifndef _USB_BUS_H_
  28 #define _USB_BUS_H_
  29
  30 struct usb_fs_privdata;
  31
  32 /*
  33  * The following structure defines the USB explore message sent to the USB
  34  * explore process.
  35  */
  36
  37 struct usb_bus_msg {
  38         struct usb_proc_msg hdr;
  39         struct usb_bus *bus;
  40 };
  41
  42 /*
  43  * The following structure defines the USB statistics structure.
  44  */
  45 struct usb_bus_stat {
  46         uint32_t uds_requests[4];
  47 };
  48
  49 /*
  50  * The following structure defines an USB BUS. There is one USB BUS
  51  * for every Host or Device controller.
  52  */
  53 struct usb_bus {
  54         struct usb_bus_stat stats_err;
  55         struct usb_bus_stat stats_ok;
  56 #if USB_HAVE_ROOT_MOUNT_HOLD
  57         struct root_hold_token *bus_roothold;
  58 #endif
  59
  60 #if USB_HAVE_PER_BUS_PROCESS
  61 #define USB_BUS_GIANT_PROC(bus) (&(bus)->giant_callback_proc)
  62 #define USB_BUS_NON_GIANT_PROC(bus) (&(bus)->non_giant_callback_proc)
  63 #define USB_BUS_EXPLORE_PROC(bus) (&(bus)->explore_proc)
  64 #define USB_BUS_CONTROL_XFER_PROC(bus) (&(bus)->control_xfer_proc)
  65
  66         /*
  67          * There are two callback processes. One for Giant locked
  68          * callbacks. One for non-Giant locked callbacks. This should
  69          * avoid congestion and reduce response time in most cases.
  70          */
  71         struct usb_process giant_callback_proc;
  72         struct usb_process non_giant_callback_proc;
  73
  74         /* Explore process */
  75         struct usb_process explore_proc;
  76
  77         /* Control request process */
  78         struct usb_process control_xfer_proc;
  79 #endif
  80
  81         struct usb_bus_msg explore_msg[2];
  82         struct usb_bus_msg detach_msg[2];
  83         struct usb_bus_msg attach_msg[2];
  84         struct usb_bus_msg suspend_msg[2];
  85         struct usb_bus_msg resume_msg[2];
  86         struct usb_bus_msg reset_msg[2];
  87         struct usb_bus_msg shutdown_msg[2];
  88 #if USB_HAVE_UGEN
  89         struct usb_bus_msg cleanup_msg[2];
  90         LIST_HEAD(,usb_fs_privdata) pd_cleanup_list;
  91 #endif
  92         /*
  93          * This mutex protects the USB hardware:
  94          */
  95         struct lock bus_lock;
  96         /*
  97          * mpf: this is only used in ARM embedded USB controllers
  98          *      up to this point. Why is it not a spinlock?
  99         struct lock bus_spin_lock;
 100          */
 101         struct usb_xfer_queue intr_q;
 102         struct usb_callout power_wdog;  /* power management */
 103
 104         device_t parent;
 105         device_t bdev;                  /* filled by HC driver */
 106
 107 #if USB_HAVE_BUSDMA
 108         struct usb_dma_parent_tag dma_parent_tag[1];
 109         struct usb_dma_tag dma_tags[USB_BUS_DMA_TAG_MAX];
 110 #endif
 111         const struct usb_bus_methods *methods;  /* filled by HC driver */
 112         struct usb_device **devices;
 113
 114         struct ifnet *ifp;      /* only for USB Packet Filter */
 115
 116         usb_power_mask_t hw_power_state;        /* see USB_HW_POWER_XXX */
 117         usb_size_t uframe_usage[USB_HS_MICRO_FRAMES_MAX];
 118
 119         uint16_t isoc_time_last;        /* in milliseconds */
 120
 121         uint8_t alloc_failed;           /* Set if memory allocation failed. */
 122         uint8_t driver_added_refcount;  /* Current driver generation count */
 123         enum usb_revision usbrev;       /* USB revision. See "USB_REV_XXX". */
 124
 125         uint8_t devices_max;            /* maximum number of USB devices */
 126         uint8_t do_hook;                /* intr_config_hook */
 127         uint8_t do_probe;               /* set if USB should be re-probed */
 128         uint8_t no_explore;             /* don't explore USB ports */
 129         uint8_t dma_bits;               /* number of DMA address bits */
 130         struct intr_config_hook hook;
 131 };
 132
 133 #endif                                  /* _USB_BUS_H_ */