fb5831565c
type to be int so that errors can be returned. 2) Use the new SIOCSIFMTU ether_ioctl support in the few drivers that are using ether_ioctl(). 3) In if_fxp.c: treat if_bpf as a token, not as a pointer. Don't bother testing for FXP_NTXSEG being reached in fxp_start()...just check for non-NULL 'm'. Change fxp_ioctl() to use ether_ioctl().
1081 lines
26 KiB
C
1081 lines
26 KiB
C
/*
|
|
* Copyright (c) 1995, David Greenman
|
|
* All rights reserved.
|
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*
|
|
* 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
|
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* 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
|
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
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* SUCH DAMAGE.
|
|
*
|
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* $Id: if_fxp.c,v 1.22 1996/11/18 02:45:46 davidg Exp $
|
|
*/
|
|
|
|
/*
|
|
* Intel EtherExpress Pro/100B PCI Fast Ethernet driver
|
|
*/
|
|
|
|
#include "bpfilter.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/ioctl.h>
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|
#include <sys/mbuf.h>
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|
#include <sys/malloc.h>
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|
#include <sys/kernel.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/syslog.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/if_dl.h>
|
|
#include <net/if_types.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>
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|
#endif
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|
|
|
#ifdef IPX
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|
#include <netipx/ipx.h>
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|
#include <netipx/ipx_if.h>
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|
#endif
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|
|
|
#ifdef NS
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|
#include <netns/ns.h>
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#include <netns/ns_if.h>
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|
#endif
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|
|
|
#if NBPFILTER > 0
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|
#include <net/bpf.h>
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|
#include <net/bpfdesc.h>
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|
#endif
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|
|
|
#include <vm/vm.h> /* for vtophys */
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|
#include <vm/vm_param.h> /* for vtophys */
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|
#include <vm/pmap.h> /* for vtophys */
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|
#include <machine/clock.h> /* for DELAY */
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|
|
|
#include <pci/pcivar.h>
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#include <pci/if_fxpreg.h>
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struct fxp_softc {
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struct arpcom arpcom; /* per-interface network data */
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struct fxp_csr *csr; /* control/status registers */
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struct fxp_cb_tx *cbl_base; /* base of TxCB list */
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struct fxp_cb_tx *cbl_first; /* first active TxCB in list */
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struct fxp_cb_tx *cbl_last; /* last active TxCB in list */
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struct mbuf *rfa_headm; /* first mbuf in receive frame area */
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struct mbuf *rfa_tailm; /* last mbuf in receive frame area */
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struct fxp_stats *fxp_stats; /* Pointer to interface stats */
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int tx_queued; /* # of active TxCB's */
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int promisc_mode; /* promiscuous mode enabled */
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};
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|
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|
static u_long fxp_count;
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|
|
|
/*
|
|
* Template for default configuration parameters.
|
|
* See struct fxp_cb_config for the bit definitions.
|
|
*/
|
|
static u_char fxp_cb_config_template[] = {
|
|
0x0, 0x0, /* cb_status */
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0x80, 0x2, /* cb_command */
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0xff, 0xff, 0xff, 0xff, /* link_addr */
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0x16, /* 0 */
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0x8, /* 1 */
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0x0, /* 2 */
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0x0, /* 3 */
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0x0, /* 4 */
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0x80, /* 5 */
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0xb2, /* 6 */
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0x3, /* 7 */
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0x1, /* 8 */
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|
0x0, /* 9 */
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0x26, /* 10 */
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|
0x0, /* 11 */
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|
0x60, /* 12 */
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|
0x0, /* 13 */
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|
0xf2, /* 14 */
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|
0x48, /* 15 */
|
|
0x0, /* 16 */
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|
0x40, /* 17 */
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|
0xf3, /* 18 */
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0x0, /* 19 */
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0x3f, /* 20 */
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0x5, /* 21 */
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0x0, 0x0
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};
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|
|
|
static inline void fxp_scb_wait __P((struct fxp_csr *));
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|
static char *fxp_probe __P((pcici_t, pcidi_t));
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|
static void fxp_attach __P((pcici_t, int));
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|
static void fxp_intr __P((void *));
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|
static void fxp_start __P((struct ifnet *));
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|
static int fxp_ioctl __P((struct ifnet *, int, caddr_t));
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|
static void fxp_init __P((void *));
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|
static void fxp_stop __P((struct fxp_softc *));
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static void fxp_watchdog __P((struct ifnet *));
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static void fxp_get_macaddr __P((struct fxp_softc *));
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static int fxp_add_rfabuf __P((struct fxp_softc *, struct mbuf *));
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static void fxp_shutdown __P((int, void *));
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|
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|
timeout_t fxp_stats_update;
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|
|
|
static struct pci_device fxp_device = {
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"fxp",
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|
fxp_probe,
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|
fxp_attach,
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|
&fxp_count,
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|
NULL
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};
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DATA_SET(pcidevice_set, fxp_device);
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/*
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* Set initial transmit threshold at 64 (512 bytes). This is
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* increased by 64 (512 bytes) at a time, to maximum of 192
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* (1536 bytes), if an underrun occurs.
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*/
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static int tx_threshold = 64;
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|
/*
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|
* Number of transmit control blocks. This determines the number
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* of transmit buffers that can be chained in the CB list.
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|
* This must be a power of two.
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|
*/
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|
#define FXP_NTXCB 128
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|
|
|
/*
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|
* TxCB list index mask. This is used to do list wrap-around.
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|
*/
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|
#define FXP_TXCB_MASK (FXP_NTXCB - 1)
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|
|
/*
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* Number of DMA segments in a TxCB. Note that this is carefully
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|
* chosen to make the total struct size an even power of two. It's
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* critical that no TxCB be split across a page boundry since
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* no attempt is made to allocate physically contiguous memory.
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|
*
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|
* XXX - don't forget to change the hard-coded constant in the
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|
* fxp_cb_tx struct (defined in if_fxpreg.h), too!
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|
*/
|
|
#define FXP_NTXSEG 29
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|
|
|
/*
|
|
* Number of receive frame area buffers. These are large so chose
|
|
* wisely.
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|
*/
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|
#define FXP_NRFABUFS 32
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|
|
|
/*
|
|
* Wait for the previous command to be accepted (but not necessarily
|
|
* completed).
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|
*/
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static inline void
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|
fxp_scb_wait(csr)
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|
struct fxp_csr *csr;
|
|
{
|
|
int i = 10000;
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|
|
|
while ((csr->scb_command & FXP_SCB_COMMAND_MASK) && --i);
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|
}
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|
|
|
/*
|
|
* Return identification string if this is device is ours.
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|
*/
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|
static char *
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|
fxp_probe(config_id, device_id)
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|
pcici_t config_id;
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|
pcidi_t device_id;
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|
{
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if (((device_id & 0xffff) == FXP_VENDORID_INTEL) &&
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((device_id >> 16) & 0xffff) == FXP_DEVICEID_i82557)
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return ("Intel EtherExpress Pro/100B Fast Ethernet");
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|
return NULL;
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|
}
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|
|
|
/*
|
|
* Allocate data structures and attach the device.
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|
*/
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|
static void
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|
fxp_attach(config_id, unit)
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|
pcici_t config_id;
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int unit;
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{
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struct fxp_softc *sc;
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struct ifnet *ifp;
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vm_offset_t pbase;
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int s, i;
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sc = malloc(sizeof(struct fxp_softc), M_DEVBUF, M_NOWAIT);
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if (sc == NULL)
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return;
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bzero(sc, sizeof(struct fxp_softc));
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s = splimp();
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/*
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* Map control/status registers.
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*/
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if (!pci_map_mem(config_id, FXP_PCI_MMBA,
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(vm_offset_t *)&sc->csr, &pbase)) {
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printf("fxp%d: couldn't map memory\n", unit);
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goto fail;
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|
}
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|
/*
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|
* Issue a software reset.
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*/
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sc->csr->port = 0;
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DELAY(10);
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|
|
|
/*
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|
* Allocate our interrupt.
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|
*/
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|
if (!pci_map_int(config_id, fxp_intr, sc, &net_imask)) {
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|
printf("fxp%d: couldn't map interrupt\n", unit);
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|
goto fail;
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|
}
|
|
|
|
sc->cbl_base = malloc(sizeof(struct fxp_cb_tx) * FXP_NTXCB,
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M_DEVBUF, M_NOWAIT);
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if (sc->cbl_base == NULL)
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|
goto malloc_fail;
|
|
|
|
sc->fxp_stats = malloc(sizeof(struct fxp_stats), M_DEVBUF, M_NOWAIT);
|
|
if (sc->fxp_stats == NULL)
|
|
goto malloc_fail;
|
|
bzero(sc->fxp_stats, sizeof(struct fxp_stats));
|
|
|
|
/*
|
|
* Pre-allocate our receive buffers.
|
|
*/
|
|
for (i = 0; i < FXP_NRFABUFS; i++) {
|
|
if (fxp_add_rfabuf(sc, NULL) != 0) {
|
|
goto malloc_fail;
|
|
}
|
|
}
|
|
|
|
ifp = &sc->arpcom.ac_if;
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|
ifp->if_softc = sc;
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ifp->if_unit = unit;
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ifp->if_name = "fxp";
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ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
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ifp->if_ioctl = fxp_ioctl;
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ifp->if_output = ether_output;
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ifp->if_start = fxp_start;
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ifp->if_watchdog = fxp_watchdog;
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ifp->if_baudrate = 100000000;
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|
ifp->if_init = fxp_init;
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|
|
|
fxp_get_macaddr(sc);
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|
printf("fxp%d: Ethernet address %6D\n", unit,
|
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sc->arpcom.ac_enaddr, ":");
|
|
|
|
/*
|
|
* Attach the interface.
|
|
*/
|
|
if_attach(ifp);
|
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ether_ifattach(ifp);
|
|
|
|
#if NBPFILTER > 0
|
|
bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header));
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|
#endif
|
|
|
|
/*
|
|
* Add shutdown hook so that DMA is disabled prior to reboot. Not
|
|
* doing do could allow DMA to corrupt kernel memory during the
|
|
* reboot before the driver initializes.
|
|
*/
|
|
at_shutdown(fxp_shutdown, sc, SHUTDOWN_POST_SYNC);
|
|
|
|
splx(s);
|
|
return;
|
|
|
|
malloc_fail:
|
|
printf("fxp%d: Failed to malloc memory\n", unit);
|
|
(void) pci_unmap_int(config_id);
|
|
if (sc && sc->cbl_base)
|
|
free(sc->cbl_base, M_DEVBUF);
|
|
if (sc && sc->fxp_stats)
|
|
free(sc->fxp_stats, M_DEVBUF);
|
|
/* frees entire chain */
|
|
if (sc && sc->rfa_headm)
|
|
m_freem(sc->rfa_headm);
|
|
fail:
|
|
if (sc)
|
|
free(sc, M_DEVBUF);
|
|
splx(s);
|
|
}
|
|
|
|
/*
|
|
* Read station (MAC) address from serial EEPROM. Basically, you
|
|
* manually shift in the read opcode (one bit at a time) and then
|
|
* shift in the address, and then you shift out the data (all of
|
|
* this one bit at a time). The word size is 16 bits, so you have
|
|
* to provide the address for every 16 bits of data. The MAC address
|
|
* is in the first 3 words (6 bytes total).
|
|
*/
|
|
static void
|
|
fxp_get_macaddr(sc)
|
|
struct fxp_softc *sc;
|
|
{
|
|
struct fxp_csr *csr;
|
|
u_short reg, *data;
|
|
int i, x;
|
|
|
|
csr = sc->csr;
|
|
data = (u_short *)sc->arpcom.ac_enaddr;
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
csr->eeprom_control = FXP_EEPROM_EECS;
|
|
/*
|
|
* Shift in read opcode.
|
|
*/
|
|
for (x = 3; x > 0; x--) {
|
|
if (FXP_EEPROM_OPC_READ & (1 << (x - 1))) {
|
|
reg = FXP_EEPROM_EECS | FXP_EEPROM_EEDI;
|
|
} else {
|
|
reg = FXP_EEPROM_EECS;
|
|
}
|
|
csr->eeprom_control = reg;
|
|
csr->eeprom_control = reg | FXP_EEPROM_EESK;
|
|
DELAY(1);
|
|
csr->eeprom_control = reg;
|
|
DELAY(1);
|
|
}
|
|
/*
|
|
* Shift in address.
|
|
*/
|
|
for (x = 6; x > 0; x--) {
|
|
if (i & (1 << (x - 1))) {
|
|
reg = FXP_EEPROM_EECS | FXP_EEPROM_EEDI;
|
|
} else {
|
|
reg = FXP_EEPROM_EECS;
|
|
}
|
|
csr->eeprom_control = reg;
|
|
csr->eeprom_control = reg | FXP_EEPROM_EESK;
|
|
DELAY(1);
|
|
csr->eeprom_control = reg;
|
|
DELAY(1);
|
|
}
|
|
reg = FXP_EEPROM_EECS;
|
|
data[i] = 0;
|
|
/*
|
|
* Shift out data.
|
|
*/
|
|
for (x = 16; x > 0; x--) {
|
|
csr->eeprom_control = reg | FXP_EEPROM_EESK;
|
|
DELAY(1);
|
|
if (csr->eeprom_control & FXP_EEPROM_EEDO)
|
|
data[i] |= (1 << (x - 1));
|
|
csr->eeprom_control = reg;
|
|
DELAY(1);
|
|
}
|
|
csr->eeprom_control = 0;
|
|
DELAY(1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Device shutdown routine. Called at system shutdown after sync. The
|
|
* main purpose of this routine is to shut off receiver DMA so that
|
|
* kernel memory doesn't get clobbered during warmboot.
|
|
*/
|
|
static void
|
|
fxp_shutdown(howto, sc)
|
|
int howto;
|
|
void *sc;
|
|
{
|
|
fxp_stop((struct fxp_softc *) sc);
|
|
}
|
|
|
|
/*
|
|
* Start packet transmission on the interface.
|
|
*/
|
|
static void
|
|
fxp_start(ifp)
|
|
struct ifnet *ifp;
|
|
{
|
|
struct fxp_softc *sc = ifp->if_softc;
|
|
struct fxp_csr *csr = sc->csr;
|
|
struct fxp_cb_tx *txp;
|
|
struct mbuf *m, *mb_head;
|
|
int segment, first = 1;
|
|
|
|
txloop:
|
|
/*
|
|
* See if we're all filled up with buffers to transmit.
|
|
*/
|
|
if (sc->tx_queued >= FXP_NTXCB)
|
|
return;
|
|
|
|
/*
|
|
* Grab a packet to transmit.
|
|
*/
|
|
IF_DEQUEUE(&sc->arpcom.ac_if.if_snd, mb_head);
|
|
if (mb_head == NULL) {
|
|
/*
|
|
* No more packets to send.
|
|
*/
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Get pointer to next available (unused) descriptor.
|
|
*/
|
|
txp = sc->cbl_last->next;
|
|
|
|
/*
|
|
* Go through each of the mbufs in the chain and initialize
|
|
* the transmit buffers descriptors with the physical address
|
|
* and size of the mbuf.
|
|
*/
|
|
tbdinit:
|
|
for (m = mb_head, segment = 0; m != NULL; m = m->m_next) {
|
|
if (m->m_len != 0) {
|
|
if (segment == FXP_NTXSEG)
|
|
break;
|
|
txp->tbd[segment].tb_addr =
|
|
vtophys(mtod(m, vm_offset_t));
|
|
txp->tbd[segment].tb_size = m->m_len;
|
|
segment++;
|
|
}
|
|
}
|
|
if (m != NULL) {
|
|
struct mbuf *mn;
|
|
|
|
/*
|
|
* We ran out of segments. We have to recopy this mbuf
|
|
* chain first.
|
|
*/
|
|
MGETHDR(mn, M_DONTWAIT, MT_DATA);
|
|
if (mn == NULL) {
|
|
m_freem(mb_head);
|
|
return;
|
|
}
|
|
if (mb_head->m_pkthdr.len > MHLEN) {
|
|
MCLGET(mn, M_DONTWAIT);
|
|
if ((mn->m_flags & M_EXT) == 0) {
|
|
m_freem(mn);
|
|
m_freem(mb_head);
|
|
return;
|
|
}
|
|
}
|
|
m_copydata(mb_head, 0, mb_head->m_pkthdr.len, mtod(mn, caddr_t));
|
|
mn->m_pkthdr.len = mn->m_len = mb_head->m_pkthdr.len;
|
|
m_freem(mb_head);
|
|
mb_head = mn;
|
|
goto tbdinit;
|
|
}
|
|
|
|
txp->tbd_number = segment;
|
|
txp->mb_head = mb_head;
|
|
|
|
/*
|
|
* Finish the initialization of this TxCB.
|
|
*/
|
|
txp->cb_status = 0;
|
|
txp->cb_command =
|
|
FXP_CB_COMMAND_XMIT | FXP_CB_COMMAND_SF | FXP_CB_COMMAND_S;
|
|
txp->tx_threshold = tx_threshold;
|
|
|
|
/*
|
|
* Advance the end-of-list forward.
|
|
*/
|
|
sc->cbl_last->cb_command &= ~FXP_CB_COMMAND_S;
|
|
sc->cbl_last = txp;
|
|
|
|
/*
|
|
* Advance the beginning of the list forward if there are
|
|
* no other packets queued (when nothing is queued, cbl_first
|
|
* sits on the last TxCB that was sent out)..
|
|
*/
|
|
if (sc->tx_queued == 0)
|
|
sc->cbl_first = txp;
|
|
|
|
sc->tx_queued++;
|
|
|
|
/*
|
|
* Only need to wait prior to the first resume command.
|
|
*/
|
|
if (first) {
|
|
first--;
|
|
fxp_scb_wait(csr);
|
|
}
|
|
|
|
/*
|
|
* Resume transmission if suspended.
|
|
*/
|
|
csr->scb_command = FXP_SCB_COMMAND_CU_RESUME;
|
|
|
|
#if NBPFILTER > 0
|
|
/*
|
|
* Pass packet to bpf if there is a listener.
|
|
*/
|
|
if (ifp->if_bpf)
|
|
bpf_mtap(ifp, mb_head);
|
|
#endif
|
|
/*
|
|
* Set a 5 second timer just in case we don't hear from the
|
|
* card again.
|
|
*/
|
|
ifp->if_timer = 5;
|
|
|
|
goto txloop;
|
|
}
|
|
|
|
/*
|
|
* Process interface interrupts.
|
|
*/
|
|
static void
|
|
fxp_intr(arg)
|
|
void *arg;
|
|
{
|
|
struct fxp_softc *sc = arg;
|
|
struct fxp_csr *csr = sc->csr;
|
|
struct ifnet *ifp = &sc->arpcom.ac_if;
|
|
u_int8_t statack;
|
|
|
|
while ((statack = csr->scb_statack) != 0) {
|
|
/*
|
|
* First ACK all the interrupts in this pass.
|
|
*/
|
|
csr->scb_statack = statack;
|
|
|
|
/*
|
|
* Free any finished transmit mbuf chains.
|
|
*/
|
|
if (statack & FXP_SCB_STATACK_CNA) {
|
|
struct fxp_cb_tx *txp;
|
|
|
|
for (txp = sc->cbl_first;
|
|
(txp->cb_status & FXP_CB_STATUS_C) != 0;
|
|
txp = txp->next) {
|
|
if (txp->mb_head != NULL) {
|
|
m_freem(txp->mb_head);
|
|
txp->mb_head = NULL;
|
|
sc->tx_queued--;
|
|
}
|
|
if (txp->cb_command & FXP_CB_COMMAND_S)
|
|
break;
|
|
}
|
|
sc->cbl_first = txp;
|
|
/*
|
|
* Clear watchdog timer. It may or may not be set
|
|
* again in fxp_start().
|
|
*/
|
|
ifp->if_timer = 0;
|
|
fxp_start(ifp);
|
|
}
|
|
/*
|
|
* Process receiver interrupts. If a no-resource (RNR)
|
|
* condition exists, get whatever packets we can and
|
|
* re-start the receiver.
|
|
*/
|
|
if (statack & (FXP_SCB_STATACK_FR | FXP_SCB_STATACK_RNR)) {
|
|
struct mbuf *m;
|
|
struct fxp_rfa *rfa;
|
|
rcvloop:
|
|
m = sc->rfa_headm;
|
|
rfa = (struct fxp_rfa *)m->m_ext.ext_buf;
|
|
|
|
if (rfa->rfa_status & FXP_RFA_STATUS_C) {
|
|
/*
|
|
* Remove first packet from the chain.
|
|
*/
|
|
sc->rfa_headm = m->m_next;
|
|
m->m_next = NULL;
|
|
|
|
/*
|
|
* Add a new buffer to the receive chain. If this
|
|
* fails, the old buffer is recycled instead.
|
|
*/
|
|
if (fxp_add_rfabuf(sc, m) == 0) {
|
|
struct ether_header *eh;
|
|
u_short total_len;
|
|
|
|
total_len = rfa->actual_size & (MCLBYTES - 1);
|
|
m->m_pkthdr.rcvif = ifp;
|
|
m->m_pkthdr.len = m->m_len = total_len -
|
|
sizeof(struct ether_header);
|
|
eh = mtod(m, struct ether_header *);
|
|
#if NBPFILTER > 0
|
|
if (ifp->if_bpf) {
|
|
bpf_tap(ifp, mtod(m, caddr_t), total_len);
|
|
/*
|
|
* Only pass this packet up if it is for us.
|
|
*/
|
|
if ((ifp->if_flags & IFF_PROMISC) &&
|
|
(rfa->rfa_status & FXP_RFA_STATUS_IAMATCH) &&
|
|
(eh->ether_dhost[0] & 1) == 0) {
|
|
m_freem(m);
|
|
goto rcvloop;
|
|
}
|
|
}
|
|
#endif
|
|
m->m_data += sizeof(struct ether_header);
|
|
ether_input(ifp, eh, m);
|
|
}
|
|
goto rcvloop;
|
|
}
|
|
if (statack & FXP_SCB_STATACK_RNR) {
|
|
struct fxp_csr *csr = sc->csr;
|
|
|
|
fxp_scb_wait(csr);
|
|
csr->scb_general = vtophys(sc->rfa_headm->m_ext.ext_buf);
|
|
csr->scb_command = FXP_SCB_COMMAND_RU_START;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Update packet in/out/collision statistics. The i82557 doesn't
|
|
* allow you to access these counters without doing a fairly
|
|
* expensive DMA to get _all_ of the statistics it maintains, so
|
|
* we do this operation here only once per second. The statistics
|
|
* counters in the kernel are updated from the previous dump-stats
|
|
* DMA and then a new dump-stats DMA is started. The on-chip
|
|
* counters are zeroed when the DMA completes. If we can't start
|
|
* the DMA immediately, we don't wait - we just prepare to read
|
|
* them again next time.
|
|
*/
|
|
void
|
|
fxp_stats_update(arg)
|
|
void *arg;
|
|
{
|
|
struct fxp_softc *sc = arg;
|
|
struct ifnet *ifp = &sc->arpcom.ac_if;
|
|
struct fxp_stats *sp = sc->fxp_stats;
|
|
|
|
ifp->if_opackets += sp->tx_good;
|
|
ifp->if_collisions += sp->tx_total_collisions;
|
|
ifp->if_ipackets += sp->rx_good;
|
|
ifp->if_ierrors +=
|
|
sp->rx_crc_errors +
|
|
sp->rx_alignment_errors +
|
|
sp->rx_rnr_errors +
|
|
sp->rx_overrun_errors +
|
|
sp->rx_shortframes;
|
|
/*
|
|
* If any transmit underruns occured, bump up the transmit
|
|
* threshold by another 512 bytes (64 * 8).
|
|
*/
|
|
if (sp->tx_underruns) {
|
|
ifp->if_oerrors += sp->tx_underruns;
|
|
if (tx_threshold < 192)
|
|
tx_threshold += 64;
|
|
}
|
|
/*
|
|
* If there is no pending command, start another stats
|
|
* dump. Otherwise punt for now.
|
|
*/
|
|
if ((sc->csr->scb_command & FXP_SCB_COMMAND_MASK) == 0) {
|
|
/*
|
|
* Start another stats dump. By waiting for it to be
|
|
* accepted, we avoid having to do splhigh locking when
|
|
* writing scb_command in other parts of the driver.
|
|
*/
|
|
sc->csr->scb_command = FXP_SCB_COMMAND_CU_DUMPRESET;
|
|
fxp_scb_wait(sc->csr);
|
|
} else {
|
|
/*
|
|
* A previous command is still waiting to be accepted.
|
|
* Just zero our copy of the stats and wait for the
|
|
* next timer event to update them.
|
|
*/
|
|
sp->tx_good = 0;
|
|
sp->tx_underruns = 0;
|
|
sp->tx_total_collisions = 0;
|
|
|
|
sp->rx_good = 0;
|
|
sp->rx_crc_errors = 0;
|
|
sp->rx_alignment_errors = 0;
|
|
sp->rx_rnr_errors = 0;
|
|
sp->rx_overrun_errors = 0;
|
|
sp->rx_shortframes = 0;;
|
|
}
|
|
/*
|
|
* Schedule another timeout one second from now.
|
|
*/
|
|
timeout(fxp_stats_update, sc, hz);
|
|
}
|
|
|
|
/*
|
|
* Stop the interface. Cancels the statistics updater and resets
|
|
* the interface.
|
|
*/
|
|
static void
|
|
fxp_stop(sc)
|
|
struct fxp_softc *sc;
|
|
{
|
|
struct ifnet *ifp = &sc->arpcom.ac_if;
|
|
struct fxp_cb_tx *txp;
|
|
int i;
|
|
|
|
/*
|
|
* Cancel stats updater.
|
|
*/
|
|
untimeout(fxp_stats_update, sc);
|
|
|
|
/*
|
|
* Issue software reset
|
|
*/
|
|
sc->csr->port = 0;
|
|
DELAY(10);
|
|
|
|
/*
|
|
* Release any xmit buffers.
|
|
*/
|
|
for (txp = sc->cbl_first; txp != NULL && txp->mb_head != NULL;
|
|
txp = txp->next) {
|
|
m_freem(txp->mb_head);
|
|
txp->mb_head = NULL;
|
|
}
|
|
sc->tx_queued = 0;
|
|
|
|
/*
|
|
* Free all the receive buffers then reallocate/reinitialize
|
|
*/
|
|
if (sc->rfa_headm != NULL)
|
|
m_freem(sc->rfa_headm);
|
|
sc->rfa_headm = NULL;
|
|
sc->rfa_tailm = NULL;
|
|
for (i = 0; i < FXP_NRFABUFS; i++) {
|
|
if (fxp_add_rfabuf(sc, NULL) != 0) {
|
|
/*
|
|
* This "can't happen" - we're at splimp()
|
|
* and we just freed all the buffers we need
|
|
* above.
|
|
*/
|
|
panic("fxp_stop: no buffers!");
|
|
}
|
|
}
|
|
|
|
ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
|
|
ifp->if_timer = 0;
|
|
}
|
|
|
|
/*
|
|
* Watchdog/transmission transmit timeout handler. Called when a
|
|
* transmission is started on the interface, but no interrupt is
|
|
* received before the timeout. This usually indicates that the
|
|
* card has wedged for some reason.
|
|
*/
|
|
static void
|
|
fxp_watchdog(ifp)
|
|
struct ifnet *ifp;
|
|
{
|
|
log(LOG_ERR, "fxp%d: device timeout\n", ifp->if_unit);
|
|
ifp->if_oerrors++;
|
|
|
|
fxp_init(ifp->if_softc);
|
|
}
|
|
|
|
static void
|
|
fxp_init(xsc)
|
|
void *xsc;
|
|
{
|
|
struct fxp_softc *sc = xsc;
|
|
struct ifnet *ifp = &sc->arpcom.ac_if;
|
|
struct fxp_cb_config *cbp;
|
|
struct fxp_cb_ias *cb_ias;
|
|
struct fxp_cb_tx *txp;
|
|
struct fxp_csr *csr = sc->csr;
|
|
int i, s, mcast, prm;
|
|
|
|
s = splimp();
|
|
/*
|
|
* Cancel any pending I/O
|
|
*/
|
|
fxp_stop(sc);
|
|
|
|
prm = (ifp->if_flags & IFF_PROMISC) ? 1 : 0;
|
|
sc->promisc_mode = prm;
|
|
/*
|
|
* Sleeze out here and enable reception of all multicasts if
|
|
* multicasts are enabled. Ideally, we'd program the multicast
|
|
* address filter to only accept specific multicasts.
|
|
*/
|
|
mcast = (ifp->if_flags & (IFF_MULTICAST|IFF_ALLMULTI)) ? 1 : 0;
|
|
|
|
/*
|
|
* Initialize base of CBL and RFA memory. Loading with zero
|
|
* sets it up for regular linear addressing.
|
|
*/
|
|
csr->scb_general = 0;
|
|
csr->scb_command = FXP_SCB_COMMAND_CU_BASE;
|
|
|
|
fxp_scb_wait(csr);
|
|
csr->scb_command = FXP_SCB_COMMAND_RU_BASE;
|
|
|
|
/*
|
|
* Initialize base of dump-stats buffer.
|
|
*/
|
|
fxp_scb_wait(csr);
|
|
csr->scb_general = vtophys(sc->fxp_stats);
|
|
csr->scb_command = FXP_SCB_COMMAND_CU_DUMP_ADR;
|
|
|
|
/*
|
|
* We temporarily use memory that contains the TxCB list to
|
|
* construct the config CB. The TxCB list memory is rebuilt
|
|
* later.
|
|
*/
|
|
cbp = (struct fxp_cb_config *) sc->cbl_base;
|
|
|
|
/*
|
|
* This bcopy is kind of disgusting, but there are a bunch of must be
|
|
* zero and must be one bits in this structure and this is the easiest
|
|
* way to initialize them all to proper values.
|
|
*/
|
|
bcopy(fxp_cb_config_template, cbp, sizeof(struct fxp_cb_config));
|
|
|
|
cbp->cb_status = 0;
|
|
cbp->cb_command = FXP_CB_COMMAND_CONFIG | FXP_CB_COMMAND_EL;
|
|
cbp->link_addr = -1; /* (no) next command */
|
|
cbp->byte_count = 22; /* (22) bytes to config */
|
|
cbp->rx_fifo_limit = 8; /* rx fifo threshold */
|
|
cbp->tx_fifo_limit = 0; /* tx fifo threshold */
|
|
cbp->adaptive_ifs = 0; /* (no) adaptive interframe spacing */
|
|
cbp->rx_dma_bytecount = 16; /* (no) rx DMA max */
|
|
cbp->tx_dma_bytecount = 16; /* (no) tx DMA max */
|
|
cbp->dma_bce = 1; /* (enable) dma max counters */
|
|
cbp->late_scb = 0; /* (don't) defer SCB update */
|
|
cbp->tno_int = 0; /* (disable) tx not okay interrupt */
|
|
cbp->ci_int = 0; /* (do) interrupt on CU not active */
|
|
cbp->save_bf = prm; /* save bad frames */
|
|
cbp->disc_short_rx = !prm; /* discard short packets */
|
|
cbp->underrun_retry = 1; /* retry mode (1) on DMA underrun */
|
|
cbp->mediatype = 1; /* (MII) interface mode */
|
|
cbp->nsai = 1; /* (don't) disable source addr insert */
|
|
cbp->preamble_length = 2; /* (7 byte) preamble */
|
|
cbp->loopback = 0; /* (don't) loopback */
|
|
cbp->linear_priority = 0; /* (normal CSMA/CD operation) */
|
|
cbp->linear_pri_mode = 0; /* (wait after xmit only) */
|
|
cbp->interfrm_spacing = 6; /* (96 bits of) interframe spacing */
|
|
cbp->promiscuous = prm; /* promiscuous mode */
|
|
cbp->bcast_disable = 0; /* (don't) disable broadcasts */
|
|
cbp->crscdt = 1; /* (CRS only) */
|
|
cbp->stripping = !prm; /* truncate rx packet to byte count */
|
|
cbp->padding = 1; /* (do) pad short tx packets */
|
|
cbp->rcv_crc_xfer = 0; /* (don't) xfer CRC to host */
|
|
cbp->force_fdx = 0; /* (don't) force full duplex */
|
|
cbp->fdx_pin_en = 1; /* (enable) FDX# pin */
|
|
cbp->multi_ia = 0; /* (don't) accept multiple IAs */
|
|
cbp->mc_all = mcast; /* accept all multicasts */
|
|
|
|
/*
|
|
* Start the config command/DMA.
|
|
*/
|
|
fxp_scb_wait(csr);
|
|
csr->scb_general = vtophys(cbp);
|
|
csr->scb_command = FXP_SCB_COMMAND_CU_START;
|
|
/* ...and wait for it to complete. */
|
|
while (!(cbp->cb_status & FXP_CB_STATUS_C));
|
|
|
|
/*
|
|
* Now initialize the station address. Temporarily use the TxCB
|
|
* memory area like we did above for the config CB.
|
|
*/
|
|
cb_ias = (struct fxp_cb_ias *) sc->cbl_base;
|
|
cb_ias->cb_status = 0;
|
|
cb_ias->cb_command = FXP_CB_COMMAND_IAS | FXP_CB_COMMAND_EL;
|
|
cb_ias->link_addr = -1;
|
|
bcopy(sc->arpcom.ac_enaddr, (void *)cb_ias->macaddr,
|
|
sizeof(sc->arpcom.ac_enaddr));
|
|
|
|
/*
|
|
* Start the IAS (Individual Address Setup) command/DMA.
|
|
*/
|
|
fxp_scb_wait(csr);
|
|
csr->scb_command = FXP_SCB_COMMAND_CU_START;
|
|
/* ...and wait for it to complete. */
|
|
while (!(cb_ias->cb_status & FXP_CB_STATUS_C));
|
|
|
|
/*
|
|
* Initialize transmit control block (TxCB) list.
|
|
*/
|
|
|
|
txp = sc->cbl_base;
|
|
bzero(txp, sizeof(struct fxp_cb_tx) * FXP_NTXCB);
|
|
for (i = 0; i < FXP_NTXCB; i++) {
|
|
txp[i].cb_status = FXP_CB_STATUS_C | FXP_CB_STATUS_OK;
|
|
txp[i].cb_command = FXP_CB_COMMAND_NOP;
|
|
txp[i].link_addr = vtophys(&txp[(i + 1) & FXP_TXCB_MASK]);
|
|
txp[i].tbd_array_addr = vtophys(&txp[i].tbd[0]);
|
|
txp[i].next = &txp[(i + 1) & FXP_TXCB_MASK];
|
|
}
|
|
/*
|
|
* Set the stop flag on the first TxCB and start the control
|
|
* unit. It will execute the NOP and then suspend.
|
|
*/
|
|
txp->cb_command = FXP_CB_COMMAND_NOP | FXP_CB_COMMAND_S;
|
|
sc->cbl_first = sc->cbl_last = txp;
|
|
sc->tx_queued = 0;
|
|
|
|
fxp_scb_wait(csr);
|
|
csr->scb_command = FXP_SCB_COMMAND_CU_START;
|
|
|
|
/*
|
|
* Initialize receiver buffer area - RFA.
|
|
*/
|
|
fxp_scb_wait(csr);
|
|
csr->scb_general = vtophys(sc->rfa_headm->m_ext.ext_buf);
|
|
csr->scb_command = FXP_SCB_COMMAND_RU_START;
|
|
|
|
ifp->if_flags |= IFF_RUNNING;
|
|
ifp->if_flags &= ~IFF_OACTIVE;
|
|
splx(s);
|
|
|
|
/*
|
|
* Start stats updater.
|
|
*/
|
|
timeout(fxp_stats_update, sc, hz);
|
|
}
|
|
|
|
/*
|
|
* Add a buffer to the end of the RFA buffer list.
|
|
* Return 0 if successful, 1 for failure. A failure results in
|
|
* adding the 'oldm' (if non-NULL) on to the end of the list -
|
|
* tossing out it's old contents and recycling it.
|
|
* The RFA struct is stuck at the beginning of mbuf cluster and the
|
|
* data pointer is fixed up to point just past it.
|
|
*/
|
|
static int
|
|
fxp_add_rfabuf(sc, oldm)
|
|
struct fxp_softc *sc;
|
|
struct mbuf *oldm;
|
|
{
|
|
struct mbuf *m;
|
|
struct fxp_rfa *rfa, *p_rfa;
|
|
|
|
MGETHDR(m, M_DONTWAIT, MT_DATA);
|
|
if (m != NULL) {
|
|
MCLGET(m, M_DONTWAIT);
|
|
if ((m->m_flags & M_EXT) == 0) {
|
|
m_freem(m);
|
|
if (oldm == NULL)
|
|
return 1;
|
|
m = oldm;
|
|
m->m_data = m->m_ext.ext_buf;
|
|
}
|
|
} else {
|
|
if (oldm == NULL)
|
|
return 1;
|
|
m = oldm;
|
|
m->m_data = m->m_ext.ext_buf;
|
|
}
|
|
/*
|
|
* Get a pointer to the base of the mbuf cluster and move
|
|
* data start past it.
|
|
*/
|
|
rfa = mtod(m, struct fxp_rfa *);
|
|
m->m_data += sizeof(struct fxp_rfa);
|
|
rfa->size = MCLBYTES - sizeof(struct fxp_rfa);
|
|
|
|
rfa->rfa_status = 0;
|
|
rfa->rfa_control = FXP_RFA_CONTROL_EL;
|
|
rfa->link_addr = -1;
|
|
rfa->rbd_addr = -1;
|
|
rfa->actual_size = 0;
|
|
/*
|
|
* If there are other buffers already on the list, attach this
|
|
* one to the end by fixing up the tail to point to this one.
|
|
*/
|
|
if (sc->rfa_headm != NULL) {
|
|
p_rfa = (struct fxp_rfa *) sc->rfa_tailm->m_ext.ext_buf;
|
|
sc->rfa_tailm->m_next = m;
|
|
p_rfa->link_addr = vtophys(rfa);
|
|
p_rfa->rfa_control &= ~FXP_RFA_CONTROL_EL;
|
|
} else {
|
|
sc->rfa_headm = m;
|
|
}
|
|
sc->rfa_tailm = m;
|
|
|
|
return (m == oldm);
|
|
}
|
|
|
|
static int
|
|
fxp_ioctl(ifp, command, data)
|
|
struct ifnet *ifp;
|
|
int command;
|
|
caddr_t data;
|
|
{
|
|
struct ifaddr *ifa = (struct ifaddr *) data;
|
|
struct fxp_softc *sc = ifp->if_softc;
|
|
struct ifreq *ifr = (struct ifreq *) data;
|
|
int s, error = 0;
|
|
|
|
s = splimp();
|
|
|
|
switch (command) {
|
|
|
|
case SIOCSIFADDR:
|
|
case SIOCGIFADDR:
|
|
case SIOCSIFMTU:
|
|
error = ether_ioctl(ifp, command, data);
|
|
break;
|
|
|
|
case SIOCSIFFLAGS:
|
|
|
|
/*
|
|
* If interface is marked up and not running, then start it.
|
|
* If it is marked down and running, stop it.
|
|
* XXX If it's up then re-initialize it. This is so flags
|
|
* such as IFF_PROMISC are handled.
|
|
*/
|
|
if (ifp->if_flags & IFF_UP) {
|
|
fxp_init(sc);
|
|
} else {
|
|
if (ifp->if_flags & IFF_RUNNING)
|
|
fxp_stop(sc);
|
|
}
|
|
break;
|
|
|
|
case SIOCADDMULTI:
|
|
case SIOCDELMULTI:
|
|
/*
|
|
* Update out multicast list.
|
|
*/
|
|
error = (command == SIOCADDMULTI) ?
|
|
ether_addmulti(ifr, &sc->arpcom) :
|
|
ether_delmulti(ifr, &sc->arpcom);
|
|
|
|
if (error == ENETRESET) {
|
|
/*
|
|
* Multicast list has changed; set the hardware filter
|
|
* accordingly.
|
|
*/
|
|
fxp_init(sc);
|
|
|
|
error = 0;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
error = EINVAL;
|
|
}
|
|
(void) splx(s);
|
|
return (error);
|
|
}
|