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fc74a9f93a
struct ifnet or the layer 2 common structure it was embedded in have been replaced with a struct ifnet pointer to be filled by a call to the new function, if_alloc(). The layer 2 common structure is also allocated via if_alloc() based on the interface type. It is hung off the new struct ifnet member, if_l2com. This change removes the size of these structures from the kernel ABI and will allow us to better manage them as interfaces come and go. Other changes of note: - Struct arpcom is no longer referenced in normal interface code. Instead the Ethernet address is accessed via the IFP2ENADDR() macro. To enforce this ac_enaddr has been renamed to _ac_enaddr. - The second argument to ether_ifattach is now always the mac address from driver private storage rather than sometimes being ac_enaddr. Reviewed by: sobomax, sam
241 lines
7.9 KiB
C
241 lines
7.9 KiB
C
/* $NetBSD: midwayvar.h,v 1.10 1997/03/20 21:34:46 chuck Exp $ */
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/*-
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* Copyright (c) 1996 Charles D. Cranor and Washington University.
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* 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 Charles D. Cranor and
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* Washington University.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* m i d w a y v a r . h
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*
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* we define the en_softc here so that bus specific modules can allocate
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* it as the first item in their softc.
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*
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* author: Chuck Cranor <chuck@ccrc.wustl.edu>
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*/
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/*
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* params needed to determine softc size
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*/
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#ifndef EN_NTX
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#define EN_NTX 8 /* number of tx bufs to use */
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#endif
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#ifndef EN_TXSZ
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#define EN_TXSZ 32 /* trasmit buf size in KB */
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#endif
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#ifndef EN_RXSZ
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#define EN_RXSZ 32 /* recv buf size in KB */
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#endif
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/* largest possible NRX (depends on RAM size) */
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#define EN_MAXNRX ((2048 - (EN_NTX * EN_TXSZ)) / EN_RXSZ)
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#ifndef EN_MAX_DMASEG
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#define EN_MAX_DMASEG 32
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#endif
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/* number of bytes to use in the first receive buffer. This must not be larger
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* than MHLEN, should be a multiple of 64 and must be a multiple of 4. */
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#define EN_RX1BUF 128
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/*
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* Structure to hold DMA maps. These are handle via a typestable uma zone.
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*/
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struct en_map {
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uintptr_t flags; /* map flags */
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struct en_map *rsvd2; /* see uma_zalloc(9) */
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struct en_softc *sc; /* back pointer */
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bus_dmamap_t map; /* the map */
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};
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#define ENMAP_LOADED 0x02
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#define ENMAP_ALLOC 0x01
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#define EN_MAX_MAPS 400
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/*
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* Statistics
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*/
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struct en_stats {
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uint32_t vtrash; /* sw copy of counter */
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uint32_t otrash; /* sw copy of counter */
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uint32_t ttrash; /* # of RBD's with T bit set */
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uint32_t mfixaddr; /* # of times we had to mfix an address */
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uint32_t mfixlen; /* # of times we had to mfix a lenght*/
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uint32_t mfixfail; /* # of times mfix failed */
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uint32_t txmbovr; /* # of times we dropped due to mbsize */
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uint32_t dmaovr; /* tx dma overflow count */
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uint32_t txoutspace; /* out of space in xmit buffer */
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uint32_t txdtqout; /* out of DTQs */
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uint32_t launch; /* total # of launches */
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uint32_t hwpull; /* # of pulls off hardware service list */
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uint32_t swadd; /* # of pushes on sw service list */
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uint32_t rxqnotus; /* # of times we pull from rx q, but fail */
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uint32_t rxqus; /* # of good pulls from rx q */
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uint32_t rxdrqout; /* # of times out of DRQs */
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uint32_t rxmbufout; /* # of time out of mbufs */
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uint32_t txnomap; /* out of DMA maps in TX */
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};
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/*
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* Each of these structures describes one of the eight transmit channels
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*/
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struct en_txslot {
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uint32_t mbsize; /* # mbuf bytes in use (max=TXHIWAT) */
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uint32_t bfree; /* # free bytes in buffer */
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uint32_t start; /* start of buffer area (byte offset) */
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uint32_t stop; /* ends of buffer area (byte offset) */
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uint32_t cur; /* next free area (byte offset) */
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uint32_t nref; /* # of VCs using this channel */
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struct ifqueue q; /* mbufs waiting for DMA now */
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struct ifqueue indma; /* mbufs waiting for DMA now */
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};
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/*
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* Each of these structures is used for each of the receive buffers on the
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* card.
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*/
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struct en_rxslot {
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uint32_t mode; /* saved copy of mode info */
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uint32_t start; /* begin of my buffer area */
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uint32_t stop; /* end of my buffer area */
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uint32_t cur; /* where I am at in the buffer */
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struct en_vcc *vcc; /* backpointer to VCI */
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struct ifqueue q; /* mbufs waiting for dma now */
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struct ifqueue indma; /* mbufs being dma'd now */
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};
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struct en_vcc {
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struct atmio_vcc vcc; /* required by common code */
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void *rxhand;
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u_int vflags;
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uint32_t ipackets;
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uint32_t opackets;
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uint32_t ibytes;
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uint32_t obytes;
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uint8_t txspeed;
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struct en_txslot *txslot; /* transmit slot */
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struct en_rxslot *rxslot; /* receive slot */
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};
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#define VCC_DRAIN 0x0001 /* closed, but draining rx */
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#define VCC_SWSL 0x0002 /* on rx software service list */
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#define VCC_CLOSE_RX 0x0004 /* currently closing */
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/*
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* softc
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*/
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struct en_softc {
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struct ifnet *ifp;
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device_t dev;
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/* bus glue */
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bus_space_tag_t en_memt; /* for EN_READ/EN_WRITE */
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bus_space_handle_t en_base; /* base of en card */
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bus_size_t en_obmemsz; /* size of en card (bytes) */
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void (*en_busreset)(void *); /* bus specific reset function */
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bus_dma_tag_t txtag; /* TX DMA tag */
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/* serv list */
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uint32_t hwslistp; /* hw pointer to service list (byte offset) */
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uint16_t swslist[MID_SL_N]; /* software svc list (see en_service()) */
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uint16_t swsl_head; /* ends of swslist (index into swslist) */
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uint16_t swsl_tail;
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uint32_t swsl_size; /* # of items in swsl */
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/* xmit dma */
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uint32_t dtq[MID_DTQ_N];/* sw copy of dma q (see EN_DQ_MK macros) */
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uint32_t dtq_free; /* # of dtq's free */
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uint32_t dtq_us; /* software copy of our pointer (byte offset) */
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uint32_t dtq_chip; /* chip's pointer (byte offset) */
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uint32_t need_dtqs; /* true if we ran out of DTQs */
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/* recv dma */
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uint32_t drq[MID_DRQ_N];/* sw copy of dma q (see ENIDQ macros) */
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uint32_t drq_free; /* # of drq's free */
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uint32_t drq_us; /* software copy of our pointer (byte offset) */
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uint32_t drq_chip; /* chip's pointer (byte offset) */
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uint32_t need_drqs; /* true if we ran out of DRQs */
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/* xmit buf ctrl. (per channel) */
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struct en_txslot txslot[MID_NTX_CH];
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/* recv buf ctrl. (per recv slot) */
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struct en_rxslot rxslot[EN_MAXNRX];
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int en_nrx; /* # of active rx slots */
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/* vccs */
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struct en_vcc **vccs;
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u_int vccs_open;
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struct cv cv_close; /* close CV */
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/* stats */
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struct en_stats stats;
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/* random stuff */
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uint32_t ipl; /* sbus interrupt lvl (1 on pci?) */
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uint8_t bestburstcode; /* code of best burst we can use */
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uint8_t bestburstlen; /* length of best burst (bytes) */
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uint8_t bestburstshift; /* (x >> shift) == (x / bestburstlen) */
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uint8_t bestburstmask; /* bits to check if not multiple of burst */
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uint8_t alburst; /* align dma bursts? */
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uint8_t noalbursts; /* don't use unaligned > 4 byte bursts */
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uint8_t is_adaptec; /* adaptec version of midway? */
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struct mbuf *padbuf; /* buffer of zeros for TX padding */
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/* mutex to protect this structure and the associated hardware */
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struct mtx en_mtx;
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/* sysctl support */
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struct sysctl_ctx_list sysctl_ctx;
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struct sysctl_oid *sysctl_tree;
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/* memory zones */
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uma_zone_t map_zone;
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/* media and phy */
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struct ifmedia media;
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struct utopia utopia;
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#ifdef EN_DEBUG
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/* debugging */
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u_int debug;
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#endif
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};
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/*
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* exported functions
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*/
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int en_attach(struct en_softc *);
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void en_destroy(struct en_softc *);
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void en_intr(void *);
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void en_reset(struct en_softc *);
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int en_modevent(module_t, int, void *arg);
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