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NetBSD/sys/arch/vax/boot/if_qe.c

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/* $NetBSD: if_qe.c,v 1.1 1998/03/11 22:13:55 ragge Exp $ */
/*
* Copyright (c) 1998 Roar Thronæs. 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, 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Roar Thronæs.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*
* Standalone routine for the DEQNA.
*/
#include <sys/param.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <lib/libsa/netif.h>
#include <vax/if/if_qereg.h>
int qe_probe(), qe_match(), qe_get(), qe_put();
void qe_init();
struct netif_stats qe_stats;
struct netif_dif qe_ifs[] = {
/* dif_unit dif_nsel dif_stats dif_private */
{ 0, 1, &qe_stats, },
};
struct netif_stats qe_stats;
struct netif_driver qe_driver = {
"qe", qe_match, qe_probe, qe_init, qe_get, qe_put, 0, qe_ifs, 1,
};
#define NRCV 1 /* Receive descriptors */
#define NXMT 1 /* Transmit descriptors */
#define NTOT (NXMT + NRCV)
struct qe_softc {
struct qe_ring *rringaddr; /* mapping info for rings */
struct qe_ring *tringaddr; /* "" */
struct qe_ring rring[NRCV+1]; /* Receive ring descriptors */
struct qe_ring tring[NXMT+1]; /* Xmit ring descriptors */
u_char setup_pkt[16][8]; /* Setup packet */
};
static char *qein,*qeout;
static volatile struct qe_softc *sc;
static volatile struct qedevice *addr;
int
qe_match(nif, machdep_hint)
struct netif *nif;
void *machdep_hint;
{
return strcmp(machdep_hint, "qe") == 0;
}
int
qe_probe(nif, machdep_hint)
struct netif *nif;
void *machdep_hint;
{
return 0;
}
void
qe_init(desc, machdep_hint)
struct iodesc *desc;
void *machdep_hint;
{
int i,j;
struct qe_ring *rp, *prp;
qein=(void*)0x1000;
qeout=(void*)0x1800;
sc=(void*)0x2000;
bzero(qein,2048);
bzero(qeout,2048);
bzero(sc,sizeof(struct qe_softc));
/* XXX hardcoded addr */
addr = (struct qedevice *)(0x20000000 + (0774440 & 017777));
addr->qe_csr = QE_RESET;
addr->qe_csr &= ~QE_RESET;
sc->rringaddr = (void *)sc->rring;
sc->tringaddr = (void *)sc->tring;
prp = (struct qe_ring *)sc->rringaddr;
bzero((caddr_t)sc->tring, sizeof(struct qe_ring));
sc->tring->qe_buf_len = -64;
sc->tring->qe_addr_lo = (int)sc->setup_pkt;
sc->tring->qe_addr_hi = 0;
bzero((caddr_t)sc->rring, sizeof(struct qe_ring));
sc->rring->qe_buf_len = -64;
sc->rring->qe_addr_lo = (int)sc->setup_pkt;
sc->rring->qe_addr_hi = 0;
rp = (struct qe_ring *)sc->tring;
rp->qe_setup = 1;
rp->qe_eomsg = 1;
rp->qe_flag = rp->qe_status1 = QE_NOTYET;
rp->qe_valid = 1;
rp = (struct qe_ring *)&sc->tring[1];
rp->qe_flag = rp->qe_status1 = 0;
rp->qe_valid = 0;
rp->qe_addr_lo = 0;
rp->qe_addr_hi = 0;
rp = (struct qe_ring *)sc->rring;
rp->qe_flag = rp->qe_status1 = QE_NOTYET;
rp->qe_valid = 1;
rp = (struct qe_ring *)&sc->rring[1];
rp->qe_flag = rp->qe_status1 = 0;
rp->qe_valid = 0;
rp->qe_addr_lo = 0;
rp->qe_addr_hi = 0;
for (i = 0; i < 6; i++) {
sc->setup_pkt[i][1] = addr->qe_sta_addr[i];
sc->setup_pkt[i+8][1] = addr->qe_sta_addr[i];
sc->setup_pkt[i][2] = 0xff;
sc->setup_pkt[i+8][2] = addr->qe_sta_addr[i];
for (j=3; j < 8; j++) {
sc->setup_pkt[i][j] = addr->qe_sta_addr[i];
sc->setup_pkt[i+8][j] = addr->qe_sta_addr[i];
}
desc->myea[i] = addr->qe_sta_addr[i];
}
addr->qe_csr = QE_XMIT_INT | QE_RCV_INT;
addr->qe_rcvlist_lo = (short)((int)prp);
addr->qe_rcvlist_hi = (short)((int)prp >> 16);
prp += NRCV+1;
addr->qe_xmtlist_lo = (short)((int)prp);
addr->qe_xmtlist_hi = (short)((int)prp >> 16);
while ((addr->qe_csr & 0x8080) != 0x8080)
;
addr->qe_csr |= 0x8080;
addr->qe_csr &= ~(QE_INT_ENABLE|QE_ELOOP);
addr->qe_csr |= QE_ILOOP;
sc->rring[0].qe_addr_lo = (short)((int)qein);
sc->rring[0].qe_addr_hi = (short)((int)qein >> 16);
sc->rring[0].qe_setup=0;
sc->rring[0].qe_buf_len=-750;
sc->rring[0].qe_valid=1;
sc->rring[0].qe_flag=sc->rring[0].qe_status1=QE_NOTYET;
sc->rring[0].qe_status2=1;
sc->rring[1].qe_valid=0;
sc->rring[1].qe_addr_lo = 0;
sc->rring[1].qe_addr_hi = 0;
sc->rring[1].qe_flag=sc->rring[1].qe_status1=QE_NOTYET;
sc->rring[1].qe_status2=1;
sc->tring[0].qe_addr_lo = (short)((int)qeout);
sc->tring[0].qe_addr_hi = (short)((int)qeout >> 16);
sc->tring[0].qe_setup=0;
sc->tring[0].qe_buf_len=0;
sc->tring[0].qe_eomsg=1;
sc->tring[0].qe_flag=sc->tring[0].qe_status1=QE_NOTYET;
sc->tring[0].qe_valid=1;
sc->tring[1].qe_flag=sc->tring[1].qe_status1=QE_NOTYET;
sc->tring[1].qe_valid=0;
sc->tring[1].qe_addr_lo = 0;
sc->tring[1].qe_addr_hi = 0;
addr->qe_csr|=QE_RCV_ENABLE;
addr->qe_rcvlist_lo = (short)((int)sc->rring);
addr->qe_rcvlist_hi = (short)((int)sc->rring >> 16);
return;
}
int
qe_get(desc, pkt, maxlen, timeout)
struct iodesc *desc;
void *pkt;
int maxlen;
time_t timeout;
{
int len, j;
retry:
for(j = 0x10000;j && (addr->qe_csr & QE_RCV_INT) == 0; j--)
;
if ((addr->qe_csr & QE_RCV_INT) == 0)
goto fail;
addr->qe_csr &= ~(QE_RCV_ENABLE|QE_XMIT_INT);
len= ((sc->rring[0].qe_status1 & QE_RBL_HI) |
(sc->rring[0].qe_status2 & QE_RBL_LO)) + 60;
if (sc->rring[0].qe_status1 & 0xc000)
goto fail;
if (len == 0)
goto retry;
bcopy((void*)qein,pkt,len);
end: sc->rring[0].qe_flag = sc->rring[1].qe_flag = 0;
sc->rring[0].qe_status2 = sc->rring[1].qe_status2 = 1;
sc->rring[0].qe_flag=sc->rring[0].qe_status1=QE_NOTYET;
sc->rring[1].qe_flag=sc->rring[1].qe_status1=QE_NOTYET;
addr->qe_csr |= QE_RCV_ENABLE;
addr->qe_rcvlist_lo = (short)((int)sc->rring);
addr->qe_rcvlist_hi = (short)((int)sc->rring >> 16);
return len;
fail: len = -1;
goto end;
}
int
qe_put(desc, pkt, len)
struct iodesc *desc;
void *pkt;
int len;
{
int j;
bcopy(pkt,qeout,len);
sc->tring[0].qe_buf_len=-len/2;
sc->tring[0].qe_flag=0;
sc->tring[0].qe_flag=sc->tring[0].qe_status1=QE_NOTYET;
sc->tring[1].qe_flag=sc->tring[1].qe_status1=QE_NOTYET;
addr->qe_xmtlist_lo = (short)((int)sc->tring);
addr->qe_xmtlist_hi = (short)((int)sc->tring >> 16);
for(j = 0; (j < 0x10000) && ((addr->qe_csr & QE_XMIT_INT) == 0); j++)
;
if ((addr->qe_csr & QE_XMIT_INT) == 0) {
qe_init(desc,0);
return -1;
}
addr->qe_csr &= ~QE_RCV_INT;
if (sc->tring[0].qe_status1 & 0xc000) {
qe_init(desc,0);
return -1;
}
return len;
}
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