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if_xennetvar.h revision 1.1.2.2 
      1 /*	$NetBSD: if_xennetvar.h,v 1.1.2.2 2004/09/16 03:19:03 jmc Exp $	*/
      2 
      3 /*
      4  *
      5  * Copyright (c) 2004 Christian Limpach.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *      This product includes software developed by Christian Limpach.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 
     35 #ifndef _XEN_IF_XENNETVAR_H_
     36 #define _XEN_IF_XENNETVAR_H_
     37 
     38 #include <machine/xen.h>
     39 #include <machine/hypervisor-ifs/network.h>
     40 
     41 union xennet_bufarray {
     42 	struct mbuf *xb_m;
     43 	struct {
     44 		vaddr_t xbrx_va;
     45 		paddr_t xbrx_ptpa;
     46 		struct xennet_softc *xbrx_sc;
     47 	} xb_rx;
     48 	int xb_next;
     49 };
     50 
     51 struct xennet_txbuf {
     52 	SLIST_ENTRY(xennet_txbuf)	xt_next;
     53 	struct xennet_softc		*xt_sc;
     54 	paddr_t				xt_pa;
     55 	u_char				xt_buf[0];
     56 };
     57 #define	TXBUF_PER_PAGE 2
     58 #define	TXBUF_BUFSIZE	(PAGE_SIZE / TXBUF_PER_PAGE) - sizeof(struct xennet_txbuf)
     59 
     60 struct xennet_softc {
     61 	struct device		sc_dev;		/* base device glue */
     62 	struct ethercom		sc_ethercom;	/* Ethernet common part */
     63 
     64 	int			sc_ifno;
     65 
     66 	uint8_t			sc_enaddr[6];
     67 
     68 #ifdef mediacode
     69 	struct ifmedia		sc_media;
     70 #endif
     71 
     72 	net_ring_t		*sc_net_ring;
     73 	net_idx_t		*sc_net_idx;
     74 
     75 	uint32_t		sc_tx_entries;
     76 	uint32_t		sc_tx_resp_cons;
     77 
     78 	uint32_t		sc_rx_resp_cons;
     79 	uint32_t		sc_rx_bufs_to_notify;
     80 
     81 	union xennet_bufarray	sc_tx_bufa[TX_RING_SIZE];
     82 	union xennet_bufarray	sc_rx_bufa[TX_RING_SIZE];
     83 
     84 	SLIST_HEAD(, xennet_txbuf)	sc_tx_bufs;
     85 #if NRND > 0
     86 	rndsource_element_t     sc_rnd_source;
     87 #endif
     88 };
     89 
     90 struct xennet_attach_args {
     91 	const char 		*xa_device;
     92 	netop_t			xa_netop;
     93 };
     94 
     95 struct nfs_diskless;
     96 
     97 int xennet_scan(struct device *, struct xennet_attach_args *, cfprint_t);
     98 void xennet_start(struct ifnet *);
     99 int xennet_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
    100 void xennet_watchdog(struct ifnet *ifp);
    101 int xennet_bootstatic_callback(struct nfs_diskless *);
    102 
    103 #endif /* _XEN_IF_XENNETVAR_H_ */
    104