1 /* $NetBSD: if_xennetvar.h,v 1.7 2005/06/06 11:51:02 yamt 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 40 union xennet_bufarray { 41 struct { 42 struct mbuf *xbtx_m; 43 } xb_tx; 44 struct { 45 vaddr_t xbrx_va; 46 paddr_t xbrx_pa; 47 struct xennet_softc *xbrx_sc; 48 } xb_rx; 49 int xb_next; 50 }; 51 52 struct xennet_txbuf { 53 SLIST_ENTRY(xennet_txbuf) xt_next; 54 struct xennet_softc *xt_sc; 55 paddr_t xt_pa; 56 u_char xt_buf[0]; 57 }; 58 #define TXBUF_PER_PAGE 2 59 #define TXBUF_BUFSIZE (PAGE_SIZE / TXBUF_PER_PAGE) - sizeof(struct xennet_txbuf) 60 61 struct xennet_softc { 62 struct device sc_dev; /* base device glue */ 63 struct ethercom sc_ethercom; /* Ethernet common part */ 64 65 int sc_ifno; 66 67 uint8_t sc_enaddr[6]; 68 69 #ifdef mediacode 70 struct ifmedia sc_media; 71 #endif 72 73 /* What is the status of our connection to the remote backend? */ 74 #define BEST_CLOSED 0 75 #define BEST_DISCONNECTED 1 76 #define BEST_CONNECTED 2 77 unsigned int sc_backend_state; 78 79 unsigned int sc_evtchn; 80 81 netif_tx_interface_t *sc_tx; 82 netif_rx_interface_t *sc_rx; 83 struct vm_page *sc_pg_tx; 84 struct vm_page *sc_pg_rx; 85 86 uint32_t sc_tx_entries; 87 uint32_t sc_tx_resp_cons; 88 89 uint32_t sc_rx_resp_cons; 90 uint32_t sc_rx_bufs_to_notify; 91 92 union xennet_bufarray sc_tx_bufa[NETIF_TX_RING_SIZE]; 93 union xennet_bufarray sc_rx_bufa[NETIF_RX_RING_SIZE]; 94 95 SLIST_HEAD(, xennet_txbuf) sc_tx_bufs; 96 97 #if NRND > 0 98 rndsource_element_t sc_rnd_source; 99 #endif 100 }; 101 102 struct xennet_attach_args { 103 const char *xa_device; 104 int xa_handle; 105 }; 106 107 struct nfs_diskless; 108 109 int xennet_scan(struct device *, struct xennet_attach_args *, cfprint_t); 110 void xennet_start(struct ifnet *); 111 int xennet_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data); 112 void xennet_watchdog(struct ifnet *ifp); 113 int xennet_bootstatic_callback(struct nfs_diskless *); 114 115 #endif /* _XEN_IF_XENNETVAR_H_ */ 116