1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2008-2019 Hans Petter Selasky. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #ifndef _USB_BUS_H_ 29 #define _USB_BUS_H_ 30 31 /* 32 * The following structure defines the USB explore message sent to the USB 33 * explore process. 34 */ 35 36 struct usb_bus_msg { 37 struct usb_proc_msg hdr; 38 struct usb_bus *bus; 39 }; 40 41 /* 42 * The following structure defines an USB BUS. There is one USB BUS 43 * for every Host or Device controller. 44 */ 45 struct usb_bus { 46 #if USB_HAVE_ROOT_MOUNT_HOLD 47 struct root_hold_token *bus_roothold; 48 #endif 49 50 /* convenience macros */ 51 #define USB_BUS_TT_PROC(bus) USB_BUS_NON_GIANT_ISOC_PROC(bus) 52 #define USB_BUS_CS_PROC(bus) USB_BUS_NON_GIANT_ISOC_PROC(bus) 53 54 #if USB_HAVE_PER_BUS_PROCESS 55 #define USB_BUS_GIANT_PROC(bus) (&(bus)->giant_callback_proc) 56 #define USB_BUS_NON_GIANT_ISOC_PROC(bus) (&(bus)->non_giant_isoc_callback_proc) 57 #define USB_BUS_NON_GIANT_BULK_PROC(bus) (&(bus)->non_giant_bulk_callback_proc) 58 #define USB_BUS_EXPLORE_PROC(bus) (&(bus)->explore_proc) 59 #define USB_BUS_CONTROL_XFER_PROC(bus) (&(bus)->control_xfer_proc) 60 /* 61 * There are three callback processes. One for Giant locked 62 * callbacks. One for non-Giant locked non-periodic callbacks 63 * and one for non-Giant locked periodic callbacks. This 64 * should avoid congestion and reduce response time in most 65 * cases. 66 */ 67 struct usb_process giant_callback_proc; 68 struct usb_process non_giant_isoc_callback_proc; 69 struct usb_process non_giant_bulk_callback_proc; 70 71 /* Explore process */ 72 struct usb_process explore_proc; 73 74 /* Control request process */ 75 struct usb_process control_xfer_proc; 76 #endif 77 78 struct usb_bus_msg explore_msg[2]; 79 struct usb_bus_msg detach_msg[2]; 80 struct usb_bus_msg attach_msg[2]; 81 struct usb_bus_msg suspend_msg[2]; 82 struct usb_bus_msg resume_msg[2]; 83 struct usb_bus_msg reset_msg[2]; 84 struct usb_bus_msg shutdown_msg[2]; 85 /* 86 * This mutex protects the USB hardware: 87 */ 88 struct mtx bus_mtx; 89 struct mtx bus_spin_lock; 90 struct usb_xfer_queue intr_q; 91 struct usb_callout power_wdog; /* power management */ 92 93 device_t parent; 94 device_t bdev; /* filled by HC driver */ 95 96 #if USB_HAVE_BUSDMA 97 struct usb_dma_parent_tag dma_parent_tag[1]; 98 struct usb_dma_tag dma_tags[USB_BUS_DMA_TAG_MAX]; 99 #endif 100 const struct usb_bus_methods *methods; /* filled by HC driver */ 101 struct usb_device **devices; 102 103 struct ifnet *ifp; /* only for USB Packet Filter */ 104 105 usb_power_mask_t hw_power_state; /* see USB_HW_POWER_XXX */ 106 usb_size_t uframe_usage[USB_HS_MICRO_FRAMES_MAX]; 107 108 uint16_t isoc_time_last; /* in milliseconds */ 109 110 uint8_t alloc_failed; /* Set if memory allocation failed. */ 111 uint8_t driver_added_refcount; /* Current driver generation count */ 112 enum usb_revision usbrev; /* USB revision. See "USB_REV_XXX". */ 113 114 uint8_t devices_max; /* maximum number of USB devices */ 115 uint8_t do_probe; /* set if USB should be re-probed */ 116 uint8_t no_explore; /* don't explore USB ports */ 117 uint8_t dma_bits; /* number of DMA address lines */ 118 uint8_t control_ep_quirk; /* need 64kByte buffer for data stage */ 119 }; 120 121 #endif /* _USB_BUS_H_ */ 122