NetBSD-5.0.2/sys/dev/ic/pdq_ifsubr.c
/* $NetBSD: pdq_ifsubr.c,v 1.52 2008/04/08 12:07:27 cegger Exp $ */
/*-
* Copyright (c) 1995, 1996 Matt Thomas <matt@3am-software.com>
* 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. 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.
*
* Id: pdq_ifsubr.c,v 1.12 1997/06/05 01:56:35 thomas Exp
*
*/
/*
* DEC PDQ FDDI Controller; code for BSD derived operating systems
*
* This module provide bus independent BSD specific O/S functions.
* (ie. it provides an ifnet interface to the rest of the system)
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pdq_ifsubr.c,v 1.52 2008/04/08 12:07:27 cegger Exp $");
#ifdef __NetBSD__
#include "opt_inet.h"
#endif
#include <sys/param.h>
#include <sys/kernel.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>
#if defined(__FreeBSD__) && BSD < 199401
#include <sys/devconf.h>
#elif defined(__bsdi__) || defined(__NetBSD__)
#include <sys/device.h>
#endif
#include <net/if.h>
#include <net/if_types.h>
#include <net/if_dl.h>
#if !defined(__NetBSD__)
#include <net/route.h>
#endif
#include "bpfilter.h"
#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif
#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#if defined(__NetBSD__)
#include <netinet/if_inarp.h>
#endif
#endif
#if defined(__FreeBSD__)
#include <netinet/if_ether.h>
#include <netinet/if_fddi.h>
#else
#include <net/if_fddi.h>
#endif
#if defined(__bsdi__)
#include <netinet/if_ether.h>
#include <i386/isa/isavar.h>
#endif
#ifndef __NetBSD__
#include <vm/vm.h>
#endif
#if defined(__FreeBSD__)
/*
* Yet another specific ifdef for FreeBSD as it diverges...
*/
#include <dev/pdq/pdqvar.h>
#include <dev/pdq/pdqreg.h>
#else
#include "pdqvar.h"
#include "pdqreg.h"
#endif
#if defined(__bsdi__) && _BSDI_VERSION < 199506 /* XXX */
static void
arp_ifinit(
struct arpcom *ac,
struct ifaddr *ifa)
{
sc->sc_ac.ac_ipaddr = IA_SIN(ifa)->sin_addr;
arpwhohas(&sc->sc_ac, &IA_SIN(ifa)->sin_addr);
#if _BSDI_VERSION >= 199401
ifa->ifa_rtrequest = arp_rtrequest;
ifa->ifa_flags |= RTF_CLONING;
#endif
#endif
void
pdq_ifinit(
pdq_softc_t *sc)
{
if (sc->sc_if.if_flags & IFF_UP) {
sc->sc_if.if_flags |= IFF_RUNNING;
#if NBPFILTER > 0
if (sc->sc_if.if_flags & IFF_PROMISC) {
sc->sc_pdq->pdq_flags |= PDQ_PROMISC;
} else {
sc->sc_pdq->pdq_flags &= ~PDQ_PROMISC;
}
#endif
if (sc->sc_if.if_flags & IFF_LINK1) {
sc->sc_pdq->pdq_flags |= PDQ_PASS_SMT;
} else {
sc->sc_pdq->pdq_flags &= ~PDQ_PASS_SMT;
}
sc->sc_pdq->pdq_flags |= PDQ_RUNNING;
pdq_run(sc->sc_pdq);
} else {
sc->sc_if.if_flags &= ~IFF_RUNNING;
sc->sc_pdq->pdq_flags &= ~PDQ_RUNNING;
pdq_stop(sc->sc_pdq);
}
}
void
pdq_ifwatchdog(
struct ifnet *ifp)
{
/*
* No progress was made on the transmit queue for PDQ_OS_TX_TRANSMIT
* seconds. Remove all queued packets.
*/
ifp->if_flags &= ~IFF_OACTIVE;
ifp->if_timer = 0;
for (;;) {
struct mbuf *m;
IFQ_DEQUEUE(&ifp->if_snd, m);
if (m == NULL)
return;
PDQ_OS_DATABUF_FREE(PDQ_OS_IFP_TO_SOFTC(ifp)->sc_pdq, m);
}
}
ifnet_ret_t
pdq_ifstart(
struct ifnet *ifp)
{
pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp);
struct mbuf *m;
int tx = 0;
if ((ifp->if_flags & IFF_RUNNING) == 0)
return;
if (sc->sc_if.if_timer == 0)
sc->sc_if.if_timer = PDQ_OS_TX_TIMEOUT;
if ((sc->sc_pdq->pdq_flags & PDQ_TXOK) == 0) {
sc->sc_if.if_flags |= IFF_OACTIVE;
return;
}
sc->sc_flags |= PDQIF_DOWNCALL;
for (;; tx = 1) {
IFQ_POLL(&ifp->if_snd, m);
if (m == NULL)
break;
#if defined(PDQ_BUS_DMA) && !defined(PDQ_BUS_DMA_NOTX)
if ((m->m_flags & M_HASTXDMAMAP) == 0) {
bus_dmamap_t map;
if (PDQ_OS_HDR_OFFSET != PDQ_RX_FC_OFFSET) {
m->m_data[0] = PDQ_FDDI_PH0;
m->m_data[1] = PDQ_FDDI_PH1;
m->m_data[2] = PDQ_FDDI_PH2;
}
if (!bus_dmamap_create(sc->sc_dmatag, m->m_pkthdr.len, 255,
m->m_pkthdr.len, 0, BUS_DMA_NOWAIT, &map)) {
if (!bus_dmamap_load_mbuf(sc->sc_dmatag, map, m,
BUS_DMA_WRITE|BUS_DMA_NOWAIT)) {
bus_dmamap_sync(sc->sc_dmatag, map, 0, m->m_pkthdr.len,
BUS_DMASYNC_PREWRITE);
M_SETCTX(m, map);
m->m_flags |= M_HASTXDMAMAP;
}
}
if ((m->m_flags & M_HASTXDMAMAP) == 0)
break;
}
#else
if (PDQ_OS_HDR_OFFSET != PDQ_RX_FC_OFFSET) {
m->m_data[0] = PDQ_FDDI_PH0;
m->m_data[1] = PDQ_FDDI_PH1;
m->m_data[2] = PDQ_FDDI_PH2;
}
#endif
if (pdq_queue_transmit_data(sc->sc_pdq, m) == PDQ_FALSE)
break;
IFQ_DEQUEUE(&ifp->if_snd, m);
}
if (m != NULL)
ifp->if_flags |= IFF_OACTIVE;
if (tx)
PDQ_DO_TYPE2_PRODUCER(sc->sc_pdq);
sc->sc_flags &= ~PDQIF_DOWNCALL;
}
void
pdq_os_receive_pdu(
pdq_t *pdq,
struct mbuf *m,
size_t pktlen,
int drop)
{
pdq_softc_t *sc = pdq->pdq_os_ctx;
struct fddi_header *fh;
sc->sc_if.if_ipackets++;
#if defined(PDQ_BUS_DMA)
{
/*
* Even though the first mbuf start at the first fddi header octet,
* the dmamap starts PDQ_OS_HDR_OFFSET octets earlier. Any additional
* mbufs will start normally.
*/
int offset = PDQ_OS_HDR_OFFSET;
struct mbuf *m0;
for (m0 = m; m0 != NULL; m0 = m0->m_next, offset = 0) {
pdq_os_databuf_sync(sc, m0, offset, m0->m_len, BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(sc->sc_dmatag, M_GETCTX(m0, bus_dmamap_t));
bus_dmamap_destroy(sc->sc_dmatag, M_GETCTX(m0, bus_dmamap_t));
m0->m_flags &= ~M_HASRXDMAMAP;
M_SETCTX(m0, NULL);
}
}
#endif
m->m_pkthdr.len = pktlen;
#if NBPFILTER > 0
if (sc->sc_bpf != NULL)
PDQ_BPF_MTAP(sc, m);
#endif
fh = mtod(m, struct fddi_header *);
if (drop || (fh->fddi_fc & (FDDIFC_L|FDDIFC_F)) != FDDIFC_LLC_ASYNC) {
PDQ_OS_DATABUF_FREE(pdq, m);
return;
}
m->m_pkthdr.rcvif = &sc->sc_if;
(*sc->sc_if.if_input)(&sc->sc_if, m);
}
void
pdq_os_restart_transmitter(
pdq_t *pdq)
{
pdq_softc_t *sc = pdq->pdq_os_ctx;
sc->sc_if.if_flags &= ~IFF_OACTIVE;
if (IFQ_IS_EMPTY(&sc->sc_if.if_snd) == 0) {
sc->sc_if.if_timer = PDQ_OS_TX_TIMEOUT;
if ((sc->sc_flags & PDQIF_DOWNCALL) == 0)
pdq_ifstart(&sc->sc_if);
} else {
sc->sc_if.if_timer = 0;
}
}
void
pdq_os_transmit_done(
pdq_t *pdq,
struct mbuf *m)
{
pdq_softc_t *sc = pdq->pdq_os_ctx;
#if NBPFILTER > 0
if (sc->sc_bpf != NULL)
PDQ_BPF_MTAP(sc, m);
#endif
PDQ_OS_DATABUF_FREE(pdq, m);
sc->sc_if.if_opackets++;
}
void
pdq_os_addr_fill(
pdq_t *pdq,
pdq_lanaddr_t *addr,
size_t num_addrs)
{
pdq_softc_t *sc = pdq->pdq_os_ctx;
struct ether_multistep step;
struct ether_multi *enm;
/*
* ADDR_FILTER_SET is always issued before FILTER_SET so
* we can play with PDQ_ALLMULTI and not worry about
* queueing a FILTER_SET ourselves.
*/
pdq->pdq_flags &= ~PDQ_ALLMULTI;
#if defined(IFF_ALLMULTI)
sc->sc_if.if_flags &= ~IFF_ALLMULTI;
#endif
ETHER_FIRST_MULTI(step, PDQ_FDDICOM(sc), enm);
while (enm != NULL && num_addrs > 0) {
if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 6) == 0) {
((u_short *) addr->lanaddr_bytes)[0] = ((u_short *) enm->enm_addrlo)[0];
((u_short *) addr->lanaddr_bytes)[1] = ((u_short *) enm->enm_addrlo)[1];
((u_short *) addr->lanaddr_bytes)[2] = ((u_short *) enm->enm_addrlo)[2];
addr++;
num_addrs--;
} else {
pdq->pdq_flags |= PDQ_ALLMULTI;
#if defined(IFF_ALLMULTI)
sc->sc_if.if_flags |= IFF_ALLMULTI;
#endif
}
ETHER_NEXT_MULTI(step, enm);
}
/*
* If not all the address fit into the CAM, turn on all-multicast mode.
*/
if (enm != NULL) {
pdq->pdq_flags |= PDQ_ALLMULTI;
#if defined(IFF_ALLMULTI)
sc->sc_if.if_flags |= IFF_ALLMULTI;
#endif
}
}
#if defined(IFM_FDDI)
static int
pdq_ifmedia_change(
struct ifnet *ifp)
{
pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp);
if (sc->sc_ifmedia.ifm_media & IFM_FDX) {
if ((sc->sc_pdq->pdq_flags & PDQ_WANT_FDX) == 0) {
sc->sc_pdq->pdq_flags |= PDQ_WANT_FDX;
if (sc->sc_pdq->pdq_flags & PDQ_RUNNING)
pdq_run(sc->sc_pdq);
}
} else if (sc->sc_pdq->pdq_flags & PDQ_WANT_FDX) {
sc->sc_pdq->pdq_flags &= ~PDQ_WANT_FDX;
if (sc->sc_pdq->pdq_flags & PDQ_RUNNING)
pdq_run(sc->sc_pdq);
}
return 0;
}
static void
pdq_ifmedia_status(
struct ifnet *ifp,
struct ifmediareq *ifmr)
{
pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp);
ifmr->ifm_status = IFM_AVALID;
if (sc->sc_pdq->pdq_flags & PDQ_IS_ONRING)
ifmr->ifm_status |= IFM_ACTIVE;
ifmr->ifm_active = (ifmr->ifm_current & ~IFM_FDX);
if (sc->sc_pdq->pdq_flags & PDQ_IS_FDX)
ifmr->ifm_active |= IFM_FDX;
}
void
pdq_os_update_status(
pdq_t *pdq,
const void *arg)
{
pdq_softc_t * const sc = pdq->pdq_os_ctx;
const pdq_response_status_chars_get_t *rsp = arg;
int media = 0;
switch (rsp->status_chars_get.pmd_type[0]) {
case PDQ_PMD_TYPE_ANSI_MUTLI_MODE: media = IFM_FDDI_MMF; break;
case PDQ_PMD_TYPE_ANSI_SINGLE_MODE_TYPE_1: media = IFM_FDDI_SMF; break;
case PDQ_PMD_TYPE_ANSI_SIGNLE_MODE_TYPE_2: media = IFM_FDDI_SMF; break;
case PDQ_PMD_TYPE_UNSHIELDED_TWISTED_PAIR: media = IFM_FDDI_UTP; break;
default: media |= IFM_MANUAL;
}
if (rsp->status_chars_get.station_type == PDQ_STATION_TYPE_DAS)
media |= IFM_FDDI_DA;
sc->sc_ifmedia.ifm_media = media | IFM_FDDI;
}
#endif /* defined(IFM_FDDI) */
int
pdq_ifioctl(
struct ifnet *ifp,
ioctl_cmd_t cmd,
void *data)
{
pdq_softc_t *sc = PDQ_OS_IFP_TO_SOFTC(ifp);
int s, error = 0;
s = PDQ_OS_SPL_RAISE();
switch (cmd) {
case SIOCSIFADDR: {
struct ifaddr *ifa = (struct ifaddr *)data;
ifp->if_flags |= IFF_UP;
switch(ifa->ifa_addr->sa_family) {
#if defined(INET)
case AF_INET: {
pdq_ifinit(sc);
PDQ_ARP_IFINIT(sc, ifa);
break;
}
#endif /* INET */
default: {
pdq_ifinit(sc);
break;
}
}
break;
}
case SIOCGIFADDR: {
struct ifreq *ifr = (struct ifreq *)data;
error = ifreq_setaddr(cmd, ifr,
(const struct sockaddr *)sc->sc_if.if_sadl);
break;
}
case SIOCSIFFLAGS: {
pdq_ifinit(sc);
break;
}
case SIOCADDMULTI:
case SIOCDELMULTI: {
/*
* Update multicast listeners
*/
if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) {
if (sc->sc_if.if_flags & IFF_RUNNING)
pdq_run(sc->sc_pdq);
error = 0;
}
break;
}
#if defined(SIOCSIFMTU)
#if !defined(ifr_mtu)
#define ifr_mtu ifr_metric
#endif
case SIOCSIFMTU: {
struct ifreq *ifr = (struct ifreq *)data;
/*
* Set the interface MTU.
*/
if (ifr->ifr_mtu > FDDIMTU) {
error = EINVAL;
break;
}
if ((error = ifioctl_common(ifp, cmd, data)) == ENETRESET)
error = 0;
break;
}
#endif /* SIOCSIFMTU */
#if defined(IFM_FDDI) && defined(SIOCSIFMEDIA)
case SIOCSIFMEDIA:
case SIOCGIFMEDIA: {
struct ifreq *ifr = (struct ifreq *)data;
error = ifmedia_ioctl(ifp, ifr, &sc->sc_ifmedia, cmd);
break;
}
#endif
default: {
error = EINVAL;
break;
}
}
PDQ_OS_SPL_LOWER(s);
return error;
}
#ifndef IFF_NOTRAILERS
#define IFF_NOTRAILERS 0
#endif
void
pdq_ifattach(
pdq_softc_t *sc,
ifnet_ret_t (*ifwatchdog)(int unit))
{
struct ifnet *ifp = &sc->sc_if;
ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_NOTRAILERS|IFF_MULTICAST;
#if (defined(__FreeBSD__) && BSD >= 199506) || defined(__NetBSD__)
ifp->if_watchdog = pdq_ifwatchdog;
#else
ifp->if_watchdog = ifwatchdog;
#endif
ifp->if_ioctl = pdq_ifioctl;
#if !defined(__NetBSD__)
ifp->if_output = fddi_output;
#endif
ifp->if_start = pdq_ifstart;
IFQ_SET_READY(&ifp->if_snd);
#if defined(IFM_FDDI)
{
const int media = sc->sc_ifmedia.ifm_media;
ifmedia_init(&sc->sc_ifmedia, IFM_FDX,
pdq_ifmedia_change, pdq_ifmedia_status);
ifmedia_add(&sc->sc_ifmedia, media, 0, 0);
ifmedia_set(&sc->sc_ifmedia, media);
}
#endif
if_attach(ifp);
#if defined(__NetBSD__)
fddi_ifattach(ifp, (void *)&sc->sc_pdq->pdq_hwaddr);
#else
fddi_ifattach(ifp);
#endif
}
#if defined(PDQ_BUS_DMA)
int
pdq_os_memalloc_contig(
pdq_t *pdq)
{
pdq_softc_t * const sc = pdq->pdq_os_ctx;
bus_dma_segment_t db_segs[1], ui_segs[1], cb_segs[1];
int db_nsegs = 0, ui_nsegs = 0;
int steps = 0;
int not_ok;
not_ok = bus_dmamem_alloc(sc->sc_dmatag,
sizeof(*pdq->pdq_dbp), sizeof(*pdq->pdq_dbp),
sizeof(*pdq->pdq_dbp), db_segs, 1, &db_nsegs,
#if defined(__sparc__) || defined(__sparc64__)
BUS_DMA_NOWAIT | BUS_DMA_COHERENT);
#else
BUS_DMA_NOWAIT);
#endif
if (!not_ok) {
steps = 1;
not_ok = bus_dmamem_map(sc->sc_dmatag, db_segs, db_nsegs,
sizeof(*pdq->pdq_dbp), (void **) &pdq->pdq_dbp,
BUS_DMA_NOWAIT);
}
if (!not_ok) {
steps = 2;
not_ok = bus_dmamap_create(sc->sc_dmatag, db_segs[0].ds_len, 1,
0x2000, 0, BUS_DMA_NOWAIT, &sc->sc_dbmap);
}
if (!not_ok) {
steps = 3;
not_ok = bus_dmamap_load(sc->sc_dmatag, sc->sc_dbmap,
pdq->pdq_dbp, sizeof(*pdq->pdq_dbp),
NULL, BUS_DMA_NOWAIT);
}
if (!not_ok) {
steps = 4;
pdq->pdq_pa_descriptor_block = sc->sc_dbmap->dm_segs[0].ds_addr;
not_ok = bus_dmamem_alloc(sc->sc_dmatag,
PDQ_OS_PAGESIZE, PDQ_OS_PAGESIZE, PDQ_OS_PAGESIZE,
ui_segs, 1, &ui_nsegs, BUS_DMA_NOWAIT);
}
if (!not_ok) {
steps = 5;
not_ok = bus_dmamem_map(sc->sc_dmatag, ui_segs, ui_nsegs,
PDQ_OS_PAGESIZE,
(void **) &pdq->pdq_unsolicited_info.ui_events,
BUS_DMA_NOWAIT);
}
if (!not_ok) {
steps = 6;
not_ok = bus_dmamap_create(sc->sc_dmatag, ui_segs[0].ds_len, 1,
PDQ_OS_PAGESIZE, 0, BUS_DMA_NOWAIT,
&sc->sc_uimap);
}
if (!not_ok) {
steps = 7;
not_ok = bus_dmamap_load(sc->sc_dmatag, sc->sc_uimap,
pdq->pdq_unsolicited_info.ui_events,
PDQ_OS_PAGESIZE, NULL, BUS_DMA_NOWAIT);
}
if (!not_ok) {
steps = 8;
pdq->pdq_unsolicited_info.ui_pa_bufstart = sc->sc_uimap->dm_segs[0].ds_addr;
cb_segs[0] = db_segs[0];
cb_segs[0].ds_addr += offsetof(pdq_descriptor_block_t, pdqdb_consumer);
cb_segs[0].ds_len = sizeof(pdq_consumer_block_t);
#if defined(__sparc__) || defined(__sparc64__)
pdq->pdq_cbp = (pdq_consumer_block_t*)((unsigned long int)pdq->pdq_dbp +
(unsigned long int)offsetof(pdq_descriptor_block_t,pdqdb_consumer));
#else
not_ok = bus_dmamem_map(sc->sc_dmatag, cb_segs, 1,
sizeof(*pdq->pdq_cbp),
(void **)&pdq->pdq_cbp,
BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
#endif
}
if (!not_ok) {
steps = 9;
not_ok = bus_dmamap_create(sc->sc_dmatag, cb_segs[0].ds_len, 1,
0x2000, 0, BUS_DMA_NOWAIT, &sc->sc_cbmap);
}
if (!not_ok) {
steps = 10;
not_ok = bus_dmamap_load(sc->sc_dmatag, sc->sc_cbmap,
pdq->pdq_cbp, sizeof(*pdq->pdq_cbp),
NULL, BUS_DMA_NOWAIT);
}
if (!not_ok) {
pdq->pdq_pa_consumer_block = sc->sc_cbmap->dm_segs[0].ds_addr;
return not_ok;
}
switch (steps) {
case 11: {
bus_dmamap_unload(sc->sc_dmatag, sc->sc_cbmap);
/* FALL THROUGH */
}
case 10: {
bus_dmamap_destroy(sc->sc_dmatag, sc->sc_cbmap);
/* FALL THROUGH */
}
case 9: {
bus_dmamem_unmap(sc->sc_dmatag,
(void *)pdq->pdq_cbp, sizeof(*pdq->pdq_cbp));
/* FALL THROUGH */
}
case 8: {
bus_dmamap_unload(sc->sc_dmatag, sc->sc_uimap);
/* FALL THROUGH */
}
case 7: {
bus_dmamap_destroy(sc->sc_dmatag, sc->sc_uimap);
/* FALL THROUGH */
}
case 6: {
bus_dmamem_unmap(sc->sc_dmatag,
(void *) pdq->pdq_unsolicited_info.ui_events,
PDQ_OS_PAGESIZE);
/* FALL THROUGH */
}
case 5: {
bus_dmamem_free(sc->sc_dmatag, ui_segs, ui_nsegs);
/* FALL THROUGH */
}
case 4: {
bus_dmamap_unload(sc->sc_dmatag, sc->sc_dbmap);
/* FALL THROUGH */
}
case 3: {
bus_dmamap_destroy(sc->sc_dmatag, sc->sc_dbmap);
/* FALL THROUGH */
}
case 2: {
bus_dmamem_unmap(sc->sc_dmatag,
(void *) pdq->pdq_dbp,
sizeof(*pdq->pdq_dbp));
/* FALL THROUGH */
}
case 1: {
bus_dmamem_free(sc->sc_dmatag, db_segs, db_nsegs);
/* FALL THROUGH */
}
}
return not_ok;
}
extern void
pdq_os_descriptor_block_sync(
pdq_os_ctx_t *sc,
size_t offset,
size_t length,
int ops)
{
bus_dmamap_sync(sc->sc_dmatag, sc->sc_dbmap, offset, length, ops);
}
extern void
pdq_os_consumer_block_sync(
pdq_os_ctx_t *sc,
int ops)
{
bus_dmamap_sync(sc->sc_dmatag, sc->sc_cbmap, 0, sizeof(pdq_consumer_block_t), ops);
}
extern void
pdq_os_unsolicited_event_sync(
pdq_os_ctx_t *sc,
size_t offset,
size_t length,
int ops)
{
bus_dmamap_sync(sc->sc_dmatag, sc->sc_uimap, offset, length, ops);
}
extern void
pdq_os_databuf_sync(
pdq_os_ctx_t *sc,
struct mbuf *m,
size_t offset,
size_t length,
int ops)
{
bus_dmamap_sync(sc->sc_dmatag, M_GETCTX(m, bus_dmamap_t), offset, length, ops);
}
extern void
pdq_os_databuf_free(
pdq_os_ctx_t *sc,
struct mbuf *m)
{
if (m->m_flags & (M_HASRXDMAMAP|M_HASTXDMAMAP)) {
bus_dmamap_t map = M_GETCTX(m, bus_dmamap_t);
bus_dmamap_unload(sc->sc_dmatag, map);
bus_dmamap_destroy(sc->sc_dmatag, map);
m->m_flags &= ~(M_HASRXDMAMAP|M_HASTXDMAMAP);
}
m_freem(m);
}
extern struct mbuf *
pdq_os_databuf_alloc(
pdq_os_ctx_t *sc)
{
struct mbuf *m;
bus_dmamap_t map;
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL) {
aprint_error_dev(&sc->sc_dev, "can't alloc small buf\n");
return NULL;
}
MCLGET(m, M_DONTWAIT);
if ((m->m_flags & M_EXT) == 0) {
aprint_error_dev(&sc->sc_dev, "can't alloc cluster\n");
m_free(m);
return NULL;
}
MCLAIM(m, &PDQ_FDDICOM(sc)->ec_rx_mowner);
m->m_pkthdr.len = m->m_len = PDQ_OS_DATABUF_SIZE;
if (bus_dmamap_create(sc->sc_dmatag, PDQ_OS_DATABUF_SIZE,
1, PDQ_OS_DATABUF_SIZE, 0, BUS_DMA_NOWAIT, &map)) {
aprint_error_dev(&sc->sc_dev, "can't create dmamap\n");
m_free(m);
return NULL;
}
if (bus_dmamap_load_mbuf(sc->sc_dmatag, map, m,
BUS_DMA_READ|BUS_DMA_NOWAIT)) {
aprint_error_dev(&sc->sc_dev, "can't load dmamap\n");
bus_dmamap_destroy(sc->sc_dmatag, map);
m_free(m);
return NULL;
}
m->m_flags |= M_HASRXDMAMAP;
M_SETCTX(m, map);
return m;
}
#endif