8f9750b7fd
This patch can solve problems when multiple USB devices are re-enumerated at the same time on the same bus. Approved by: thompsa (mentor)
225 lines
8.2 KiB
C
225 lines
8.2 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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#ifndef _USB_DEVICE_H_
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#define _USB_DEVICE_H_
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struct usb_symlink; /* UGEN */
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struct usb_device; /* linux compat */
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#define USB_CTRL_XFER_MAX 2
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/* "usb_parse_config()" commands */
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#define USB_CFG_ALLOC 0
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#define USB_CFG_FREE 1
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#define USB_CFG_INIT 2
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/* "usb_unconfigure()" flags */
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#define USB_UNCFG_FLAG_NONE 0x00
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#define USB_UNCFG_FLAG_FREE_EP0 0x02 /* endpoint zero is freed */
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struct usb_clear_stall_msg {
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struct usb_proc_msg hdr;
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struct usb_device *udev;
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};
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/* The following four structures makes up a tree, where we have the
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* leaf structure, "usb_host_endpoint", first, and the root structure,
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* "usb_device", last. The four structures below mirror the structure
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* of the USB descriptors belonging to an USB configuration. Please
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* refer to the USB specification for a definition of "endpoints" and
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* "interfaces".
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*/
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struct usb_host_endpoint {
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struct usb_endpoint_descriptor desc;
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TAILQ_HEAD(, urb) bsd_urb_list;
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struct usb_xfer *bsd_xfer[2];
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uint8_t *extra; /* Extra descriptors */
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usb_frlength_t fbsd_buf_size;
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uint16_t extralen;
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uint8_t bsd_iface_index;
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} __aligned(USB_HOST_ALIGN);
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struct usb_host_interface {
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struct usb_interface_descriptor desc;
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/* the following array has size "desc.bNumEndpoint" */
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struct usb_host_endpoint *endpoint;
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const char *string; /* iInterface string, if present */
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uint8_t *extra; /* Extra descriptors */
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uint16_t extralen;
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uint8_t bsd_iface_index;
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} __aligned(USB_HOST_ALIGN);
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/*
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* The following structure defines the USB device flags.
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*/
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struct usb_device_flags {
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enum usb_hc_mode usb_mode; /* host or device mode */
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uint8_t self_powered:1; /* set if USB device is self powered */
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uint8_t no_strings:1; /* set if USB device does not support
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* strings */
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uint8_t remote_wakeup:1; /* set if remote wakeup is enabled */
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uint8_t uq_bus_powered:1; /* set if BUS powered quirk is present */
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/*
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* NOTE: Although the flags below will reach the same value
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* over time, but the instant values may differ, and
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* consequently the flags cannot be merged into one!
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*/
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uint8_t peer_suspended:1; /* set if peer is suspended */
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uint8_t self_suspended:1; /* set if self is suspended */
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};
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/*
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* The following structure is used for power-save purposes. The data
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* in this structure is protected by the USB BUS lock.
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*/
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struct usb_power_save {
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usb_ticks_t last_xfer_time; /* copy of "ticks" */
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usb_size_t type_refs[4]; /* transfer reference count */
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usb_size_t read_refs; /* data read references */
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usb_size_t write_refs; /* data write references */
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};
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/*
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* The following structure defines an USB device. There exists one of
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* these structures for every USB device.
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*/
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struct usb_device {
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struct usb_clear_stall_msg cs_msg[2]; /* generic clear stall
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* messages */
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struct sx ctrl_sx;
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struct sx enum_sx;
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struct sx sr_sx;
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struct mtx device_mtx;
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struct cv ctrlreq_cv;
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struct cv ref_cv;
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struct usb_interface *ifaces;
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struct usb_endpoint ctrl_ep; /* Control Endpoint 0 */
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struct usb_endpoint *endpoints;
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struct usb_power_save pwr_save;/* power save data */
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struct usb_bus *bus; /* our USB BUS */
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device_t parent_dev; /* parent device */
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struct usb_device *parent_hub;
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struct usb_device *parent_hs_hub; /* high-speed parent HUB */
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struct usb_config_descriptor *cdesc; /* full config descr */
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struct usb_hub *hub; /* only if this is a hub */
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struct usb_xfer *ctrl_xfer[USB_CTRL_XFER_MAX];
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struct usb_temp_data *usb_template_ptr;
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struct usb_endpoint *ep_curr; /* current clear stall endpoint */
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#if USB_HAVE_UGEN
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struct usb_fifo *fifo[USB_FIFO_MAX];
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struct usb_symlink *ugen_symlink; /* our generic symlink */
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struct cdev *ctrl_dev; /* Control Endpoint 0 device node */
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LIST_HEAD(,usb_fs_privdata) pd_list;
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char ugen_name[20]; /* name of ugenX.X device */
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#endif
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usb_ticks_t plugtime; /* copy of "ticks" */
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enum usb_dev_state state;
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enum usb_dev_speed speed;
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uint16_t refcount;
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#define USB_DEV_REF_MAX 0xffff
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uint16_t power; /* mA the device uses */
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uint16_t langid; /* language for strings */
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uint8_t address; /* device addess */
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uint8_t device_index; /* device index in "bus->devices" */
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uint8_t curr_config_index; /* current configuration index */
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uint8_t curr_config_no; /* current configuration number */
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uint8_t depth; /* distance from root HUB */
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uint8_t port_index; /* parent HUB port index */
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uint8_t port_no; /* parent HUB port number */
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uint8_t hs_hub_addr; /* high-speed HUB address */
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uint8_t hs_port_no; /* high-speed HUB port number */
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uint8_t driver_added_refcount; /* our driver added generation count */
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uint8_t power_mode; /* see USB_POWER_XXX */
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uint8_t re_enumerate_wait; /* set if re-enum. is in progress */
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uint8_t ifaces_max; /* number of interfaces present */
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uint8_t endpoints_max; /* number of endpoints present */
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/* the "flags" field is write-protected by "bus->mtx" */
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struct usb_device_flags flags;
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struct usb_endpoint_descriptor ctrl_ep_desc; /* for endpoint 0 */
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struct usb_device_descriptor ddesc; /* device descriptor */
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char *serial; /* serial number */
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char *manufacturer; /* manufacturer string */
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char *product; /* product string */
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#if USB_HAVE_COMPAT_LINUX
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/* Linux compat */
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struct usb_device_descriptor descriptor;
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struct usb_host_endpoint ep0;
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struct usb_interface *linux_iface_start;
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struct usb_interface *linux_iface_end;
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struct usb_host_endpoint *linux_endpoint_start;
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struct usb_host_endpoint *linux_endpoint_end;
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uint16_t devnum;
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#endif
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};
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/* globals */
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extern int usb_template;
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/* function prototypes */
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const char *usb_statestr(enum usb_dev_state state);
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struct usb_device *usb_alloc_device(device_t parent_dev, struct usb_bus *bus,
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struct usb_device *parent_hub, uint8_t depth,
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uint8_t port_index, uint8_t port_no,
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enum usb_dev_speed speed, enum usb_hc_mode mode);
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usb_error_t usb_probe_and_attach(struct usb_device *udev,
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uint8_t iface_index);
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void usb_detach_device(struct usb_device *, uint8_t, uint8_t);
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usb_error_t usb_reset_iface_endpoints(struct usb_device *udev,
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uint8_t iface_index);
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usb_error_t usbd_set_config_index(struct usb_device *udev, uint8_t index);
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usb_error_t usbd_set_endpoint_stall(struct usb_device *udev,
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struct usb_endpoint *ep, uint8_t do_stall);
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usb_error_t usb_suspend_resume(struct usb_device *udev,
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uint8_t do_suspend);
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void usb_devinfo(struct usb_device *udev, char *dst_ptr, uint16_t dst_len);
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void usb_free_device(struct usb_device *, uint8_t);
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void usb_linux_free_device(struct usb_device *dev);
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uint8_t usb_peer_can_wakeup(struct usb_device *udev);
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struct usb_endpoint *usb_endpoint_foreach(struct usb_device *udev, struct usb_endpoint *ep);
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void usb_set_device_state(struct usb_device *udev,
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enum usb_dev_state state);
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void usbd_enum_lock(struct usb_device *);
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void usbd_enum_unlock(struct usb_device *);
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void usbd_sr_lock(struct usb_device *);
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void usbd_sr_unlock(struct usb_device *);
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uint8_t usbd_enum_is_locked(struct usb_device *);
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#endif /* _USB_DEVICE_H_ */
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