1179645Smarcel/*- 2179645Smarcel * Copyright (c) 2008 Nathan Whitehorn 3179645Smarcel * Copyright (c) 2003 Peter Grehan 4179645Smarcel * All rights reserved 5179645Smarcel * 6179645Smarcel * Redistribution and use in source and binary forms, with or without 7179645Smarcel * modification, are permitted provided that the following conditions 8179645Smarcel * are met: 9179645Smarcel * 1. Redistributions of source code must retain the above copyright 10179645Smarcel * notice, this list of conditions and the following disclaimer. 11179645Smarcel * 2. Redistributions in binary form must reproduce the above copyright 12179645Smarcel * notice, this list of conditions and the following disclaimer in the 13179645Smarcel * documentation and/or other materials provided with the distribution. 14179645Smarcel * 15179645Smarcel * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16179645Smarcel * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17179645Smarcel * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18179645Smarcel * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19179645Smarcel * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20179645Smarcel * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21179645Smarcel * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22179645Smarcel * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23179645Smarcel * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24179645Smarcel * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25179645Smarcel * SUCH DAMAGE. 26179645Smarcel * 27179645Smarcel * $FreeBSD$ 28179645Smarcel */ 29179645Smarcel 30179645Smarcel/* 31179645Smarcel * Number of transmit/receive DBDMA descriptors. 32179645Smarcel * XXX allow override with a tuneable ? 33179645Smarcel */ 34179645Smarcel#define BM_MAX_DMA_COMMANDS 256 35179645Smarcel#define BM_NTXSEGS 16 36179645Smarcel 37179645Smarcel#define BM_MAX_TX_PACKETS 100 38179645Smarcel#define BM_MAX_RX_PACKETS 100 39179645Smarcel 40179645Smarcel/* 41179645Smarcel * Mutex macros 42179645Smarcel */ 43179645Smarcel#define BM_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx) 44179645Smarcel#define BM_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx) 45179645Smarcel 46179645Smarcel/* 47179645Smarcel * software state for transmit job mbufs (may be elements of mbuf chains) 48179645Smarcel */ 49179645Smarcelstruct bm_txsoft { 50179645Smarcel struct mbuf *txs_mbuf; /* head of our mbuf chain */ 51179645Smarcel bus_dmamap_t txs_dmamap; /* our DMA map */ 52179645Smarcel int txs_firstdesc; /* first descriptor in packet */ 53179645Smarcel int txs_lastdesc; /* last descriptor in packet */ 54179645Smarcel int txs_stopdesc; /* the location of the closing STOP */ 55179645Smarcel 56179645Smarcel int txs_ndescs; /* number of descriptors */ 57179645Smarcel STAILQ_ENTRY(bm_txsoft) txs_q; 58179645Smarcel}; 59179645Smarcel 60179645SmarcelSTAILQ_HEAD(bm_txsq, bm_txsoft); 61179645Smarcel 62179645Smarcel/* 63179645Smarcel * software state for receive jobs 64179645Smarcel */ 65179645Smarcelstruct bm_rxsoft { 66179645Smarcel struct mbuf *rxs_mbuf; /* head of our mbuf chain */ 67179645Smarcel bus_dmamap_t rxs_dmamap; /* our DMA map */ 68179645Smarcel 69179645Smarcel int dbdma_slot; 70179645Smarcel bus_dma_segment_t segment; 71179645Smarcel}; 72179645Smarcel 73179645Smarcelstruct bm_softc { 74179645Smarcel struct ifnet *sc_ifp; 75179645Smarcel struct mtx sc_mtx; 76179645Smarcel u_char sc_enaddr[ETHER_ADDR_LEN]; 77179645Smarcel 78179645Smarcel int sc_streaming; 79179645Smarcel int sc_ifpflags; 80179645Smarcel int sc_duplex; 81179645Smarcel int sc_wdog_timer; 82179645Smarcel 83179645Smarcel struct callout sc_tick_ch; 84179645Smarcel 85179645Smarcel device_t sc_dev; /* back ptr to dev */ 86179645Smarcel struct resource *sc_memr; /* macio bus mem resource */ 87179645Smarcel int sc_memrid; 88179645Smarcel device_t sc_miibus; 89179645Smarcel 90179645Smarcel struct mii_data *sc_mii; 91179645Smarcel 92179645Smarcel struct resource *sc_txdmar, *sc_rxdmar; 93179645Smarcel int sc_txdmarid, sc_rxdmarid; 94179645Smarcel 95179645Smarcel struct resource *sc_txdmairq, *sc_rxdmairq; 96179645Smarcel void *sc_txihtx, *sc_rxih; 97179645Smarcel int sc_txdmairqid, sc_rxdmairqid; 98179645Smarcel 99179645Smarcel bus_dma_tag_t sc_pdma_tag; 100179645Smarcel 101179645Smarcel bus_dma_tag_t sc_tdma_tag; 102179645Smarcel struct bm_txsoft sc_txsoft[BM_MAX_TX_PACKETS]; 103179645Smarcel int first_used_txdma_slot, next_txdma_slot; 104179645Smarcel 105179645Smarcel struct bm_txsq sc_txfreeq; 106179645Smarcel struct bm_txsq sc_txdirtyq; 107179645Smarcel 108179645Smarcel bus_dma_tag_t sc_rdma_tag; 109179645Smarcel struct bm_rxsoft sc_rxsoft[BM_MAX_TX_PACKETS]; 110179645Smarcel int next_rxdma_slot, rxdma_loop_slot; 111179645Smarcel 112179645Smarcel dbdma_channel_t *sc_txdma, *sc_rxdma; 113179645Smarcel}; 114