b262697660
for usb. I hope that this will eventually be used for generic devices that need full fledged blocking threads for event processing. Create a taskqueue: void usb_ether_task_init(device_t, int, struct usb_taskqueue *); Enqueue a task: void usb_ether_task_enqueue(struct usb_taskqueue *, struct task *); Wait for all tasks queued to complete: void usb_ether_task_drain(struct usb_taskqueue *, struct task *); Destroy the taskqueue: void usb_ether_task_destroy(struct usb_taskqueue *);
92 lines
3.1 KiB
C
92 lines
3.1 KiB
C
/*-
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* Copyright (c) 1997, 1998, 1999, 2000
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* Bill Paul <wpaul@ee.columbia.edu>. 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _USB_ETHERSUBR_H_
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#define _USB_ETHERSUBR_H_
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#include <sys/bus.h>
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#include <sys/module.h>
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#include <dev/usb/usbdi.h>
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#define UE_TX_LIST_CNT 1
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#define UE_RX_LIST_CNT 1
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#define UE_BUFSZ 1536
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struct usb_qdat {
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struct ifnet *ifp;
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void (*if_rxstart) (struct ifnet *);
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};
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struct ue_chain {
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void *ue_sc;
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usbd_xfer_handle ue_xfer;
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char *ue_buf;
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struct mbuf *ue_mbuf;
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int ue_idx;
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usbd_status ue_status;
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};
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struct ue_cdata {
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struct ue_chain ue_tx_chain[UE_TX_LIST_CNT];
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struct ue_chain ue_rx_chain[UE_RX_LIST_CNT];
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void *ue_ibuf;
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int ue_tx_prod;
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int ue_tx_cons;
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int ue_tx_cnt;
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int ue_rx_prod;
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};
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void usb_register_netisr (void);
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void usb_ether_input (struct mbuf *);
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void usb_tx_done (struct mbuf *);
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struct mbuf *usb_ether_newbuf (void);
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int usb_ether_rx_list_init (void *, struct ue_cdata *,
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usbd_device_handle);
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int usb_ether_tx_list_init (void *, struct ue_cdata *,
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usbd_device_handle);
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void usb_ether_rx_list_free (struct ue_cdata *);
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void usb_ether_tx_list_free (struct ue_cdata *);
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struct usb_taskqueue {
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int dummy;
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};
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void usb_ether_task_init(device_t, int, struct usb_taskqueue *);
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void usb_ether_task_enqueue(struct usb_taskqueue *, struct task *);
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void usb_ether_task_drain(struct usb_taskqueue *, struct task *);
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void usb_ether_task_destroy(struct usb_taskqueue *);
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#endif /* _USB_ETHERSUBR_H_ */
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