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/*
* Principal Author: Matthew Jacob
* Copyright (c) 1999, 2001 by Traakan Software
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Additional Copyright (c) 2001 by Parag Patel
* under same licence for MII PHY code.
*/
/*
* Softc definitions for the Intel Gigabit Ethernet driver.
*
* Guidance and inspiration from David Greenman's
* if_fxp driver gratefully acknowledged here.
*/
/*
* Platform specific defines and inline functions go here.
* Look further below for more generic structures.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/device.h>
#include <sys/timeout.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/if_media.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_ether.h>
#endif
#ifdef NS
#include <netns/ns.h>
#include <netns/ns_if.h>
#endif
#include "bpfilter.h"
#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif
#include <uvm/uvm_extern.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/pci/if_wxreg.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
struct wxmdvar {
struct device dev; /* generic device structures */
void * ih; /* interrupt handler cookie */
struct arpcom arpcom; /* ethernet common part */
pci_chipset_tag_t pci_pc;
pcitag_t pci_tag;
u_int32_t cmdw;
struct timeout tmo; /* handle for timeouts */
bus_space_tag_t st; /* bus space tag */
bus_space_handle_t sh; /* bus space handle */
struct ifmedia ifm;
int locked;
struct mii_data mii_data;
int spl;
};
#define wx_dev w.dev
#define wx_enaddr w.arpcom.ac_enaddr
#define wx_cmdw w.cmdw
#define wx_media w.ifm
#define wx_tmo w.tmo
#define wx_if w.arpcom.ac_if
#define wx_name w.dev.dv_xname
#define IOCTL_CMD_TYPE u_long
#define WXMALLOC(len) malloc(len, M_DEVBUF, M_NOWAIT)
#define WXFREE(ptr) free(ptr, M_DEVBUF)
#define SOFTC_IFP(ifp) ifp->if_softc
#define WX_BPFTAP_ARG(ifp) (ifp)->if_bpf
#define TIMEOUT(sc, func, arg, time) VTIMEOUT(sc, func, arg, time)
#define VTIMEOUT(sc, func, arg, time) {timeout_set(&(sc)->wx_tmo, func, arg); timeout_add(&(sc)->wx_tmo, time);}
#define UNTIMEOUT(f, arg, sc) timeout_del(&(sc)->wx_tmo)
#define INLINE inline
#define WX_LOCK(wx) if (wx->w.locked++ == 0) wx->w.spl = splimp()
#define WX_UNLOCK(wx) if (wx->w.locked) { \
if (--wx->w.locked == 0) \
splx(wx->w.spl); \
}
#define WX_ILOCK(_sc)
#define WX_IUNLK(_sc)
#define WX_SOFTC_FROM_MII_ARG(x) (wx_softc_t *) x
#define WX_MII_FROM_SOFTC(x) (&x->w.mii_data)
#define vm_offset_t vaddr_t
#define READ_CSR _read_csr
#define WRITE_CSR _write_csr
typedef unsigned long intptr_t;
/*
* Transmit soft descriptor, used to manage packets as they come in.
*/
typedef struct rxpkt {
struct mbuf *dptr; /* pointer to receive frame */
u_int32_t dma_addr; /* dma address */
} rxpkt_t;
/*
* Transmit soft descriptor, used to manage packets as they are transmitted.
*/
typedef struct txpkt {
struct txpkt *next; /* next in a chain */
struct mbuf *dptr; /* pointer to mbuf being sent */
u_int32_t sidx; /* start index */
u_int32_t eidx; /* end index */
} txpkt_t;
typedef struct wx_softc {
/*
* OS dependent storage... must be first...
*/
struct wxmdvar w;
/*
* misc goodies
*/
u_int32_t : 22,
wx_needreinit : 1,
wx_mii : 1, /* non-zero if we have a PHY */
wx_no_flow : 1,
wx_ilos : 1,
wx_no_ilos : 1,
wx_verbose : 1,
wx_debug : 1,
ane_failed : 1,
linkup : 1,
all_mcasts : 1;
u_int32_t wx_idnrev; /* chip revision && PCI ID */
u_int16_t wx_cfg1;
u_int16_t wx_unused;
u_int32_t wx_ienable; /* current ienable to use */
u_int32_t wx_dcr; /* dcr used */
u_int32_t wx_icr; /* last icr */
/*
* Statistics, soft && hard
*/
u_int32_t wx_intr;
u_int32_t wx_linkintr;
u_int32_t wx_rxintr;
u_int32_t wx_txqe;
u_int32_t wx_xmitgc;
u_int32_t wx_xmitpullup;
u_int32_t wx_xmitcluster;
u_int32_t wx_xmitputback;
u_int32_t wx_xmitwanted;
u_int32_t wx_xmitblocked;
u_int32_t wx_xmitrunt;
u_int32_t wx_rxnobuf;
u_int32_t wx_oddpkt;
/*
* Soft copies of multicast addresses. We're only
* using (right now) the rest of the receive address
* registers- not the hashed multicast table.
*/
u_int8_t wx_mcaddr[WX_RAL_TAB_SIZE-1][6];
u_int8_t wx_nmca; /* # active multicast addrs */
/*
* Receive Management
* We have software and shared memory rings in a buddy store format.
*/
wxrd_t *rdescriptors; /* receive descriptor ring */
rxpkt_t *rbase; /* base of soft rdesc list */
u_int16_t rnxt; /* next descriptor to check */
u_int16_t _pad;
struct mbuf *rpending; /* pending partial packet */
/*
* Transmit Management
* We have software and shared memory rings in a buddy store format.
*/
txpkt_t *tbase; /* base of soft soft management */
txpkt_t *tbsyf, *tbsyl; /* linked busy list */
wxtd_t *tdescriptors; /* transmit descriptor ring */
u_int16_t tnxtfree; /* next free index (circular) */
u_int16_t tactive; /* # active */
} wx_softc_t;
/*
* We offset the the receive frame header by two bytes so that the actual
* payload is 32 bit aligned. On platforms that require strict structure
* alignment, this means that the ethernet frame header may have to be shifted
* to align it at interrupt time, but because it's such a small amount
* (fourteen bytes) and processors have gotten pretty fast, that's okay.
* It may even turn out on some platforms that this doesn't have to happen.
*/
#define WX_RX_OFFSET_VALUE 2
/*
* Tunable Parameters.
*
* Descriptor lengths must be in multiples of 8.
*/
#define WX_MAX_TDESC 256 /* number of transmit descriptors */
#define T_NXT_IDX(x) ((x + 1) & (WX_MAX_TDESC - 1))
#define T_PREV_IDX(x) ((x - 1) & (WX_MAX_TDESC - 1))
#define WX_MAX_RDESC 256 /* number of receive descriptors */
#ifdef PADDED_CELL
#define RXINCR 2
#else
#define RXINCR 1
#endif
#define R_NXT_IDX(x) ((x + RXINCR) & (WX_MAX_RDESC - 1))
#define R_PREV_IDX(x) ((x - RXINCR) & (WX_MAX_RDESC - 1))
/*
* Link Up timeout, in milliseconds.
*/
#define WX_LINK_UP_TIMEOUT 500
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