diff options
Diffstat (limited to 'sys/dev/usb/usb_process.h')
| -rw-r--r-- | sys/dev/usb/usb_process.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/sys/dev/usb/usb_process.h b/sys/dev/usb/usb_process.h new file mode 100644 index 0000000..756b929 --- /dev/null +++ b/sys/dev/usb/usb_process.h @@ -0,0 +1,88 @@ +/* $FreeBSD$ */ +/*- + * 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 _USB2_PROCESS_H_ +#define _USB2_PROCESS_H_ + +#include <sys/priority.h> + +/* defines */ +#define USB_PRI_HIGH PI_NET +#define USB_PRI_MED PI_DISK + +#define USB_PROC_WAIT_TIMEOUT 2 +#define USB_PROC_WAIT_DRAIN 1 +#define USB_PROC_WAIT_NORMAL 0 + +/* structure prototypes */ + +struct usb2_proc_msg; + +/* typedefs */ + +typedef void (usb2_proc_callback_t)(struct usb2_proc_msg *hdr); + +/* + * The following structure defines the USB process message header. + */ +struct usb2_proc_msg { + TAILQ_ENTRY(usb2_proc_msg) pm_qentry; + usb2_proc_callback_t *pm_callback; + uint32_t pm_num; +}; + +/* + * The following structure defines the USB process. + */ +struct usb2_process { + TAILQ_HEAD(, usb2_proc_msg) up_qhead; + struct cv up_cv; + struct cv up_drain; + + struct proc *up_ptr; + struct thread *up_curtd; + struct mtx *up_mtx; + + uint32_t up_msg_num; + + uint8_t up_prio; + uint8_t up_gone; + uint8_t up_msleep; + uint8_t up_csleep; + uint8_t up_dsleep; +}; + +/* prototypes */ + +uint8_t usb2_proc_is_gone(struct usb2_process *up); +int usb2_proc_create(struct usb2_process *up, struct mtx *p_mtx, + const char *pmesg, uint8_t prio); +void usb2_proc_drain(struct usb2_process *up); +void usb2_proc_mwait(struct usb2_process *up, void *pm0, void *pm1); +void usb2_proc_free(struct usb2_process *up); +void *usb2_proc_msignal(struct usb2_process *up, void *pm0, void *pm1); + +#endif /* _USB2_PROCESS_H_ */ |
