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Big polling(4) cleanup.

Browse Source 
o Axe poll in trap.

o Axe IFF_POLLING flag from if_flags.

o Rework revision 1.21 (Giant removal), in such a way that
  poll_mtx is not dropped during call to polling handler.
  This fixes problem with idle polling.

o Make registration and deregistration from polling in a
  functional way, insted of next tick/interrupt.

o Obsolete kern.polling.enable. Polling is turned on/off
  with ifconfig.

Detailed kern_poll.c changes:
  - Remove polling handler flags, introduced in 1.21. The are not
    needed now.
  - Forget and do not check if_flags, if_capenable and if_drv_flags.
  - Call all registered polling handlers unconditionally.
  - Do not drop poll_mtx, when entering polling handlers.
  - In ether_poll() NET_LOCK_GIANT prior to locking poll_mtx.
  - In netisr_poll() axe the block, where polling code asks drivers
    to unregister.
  - In netisr_poll() and ether_poll() do polling always, if any
    handlers are present.
  - In ether_poll_[de]register() remove a lot of error hiding code. Assert
    that arguments are correct, instead.
  - In ether_poll_[de]register() use standard return values in case of
    error or success.
  - Introduce poll_switch() that is a sysctl handler for kern.polling.enable.
    poll_switch() goes through interface list and enabled/disables polling.
    A message that kern.polling.enable is deprecated is printed.

Detailed driver changes:
  - On attach driver announces IFCAP_POLLING in if_capabilities, but
    not in if_capenable.
  - On detach driver calls ether_poll_deregister() if polling is enabled.
  - In polling handler driver obtains its lock and checks IFF_DRV_RUNNING
    flag. If there is no, then unlocks and returns.
  - In ioctl handler driver checks for IFCAP_POLLING flag requested to
    be set or cleared. Driver first calls ether_poll_[de]register(), then
    obtains driver lock and [dis/en]ables interrupts.
  - In interrupt handler driver checks IFCAP_POLLING flag in if_capenable.
    If present, then returns.This is important to protect from spurious
    interrupts.

Reviewed by:	ru, sam, jhb
This commit is contained in:
Gleb Smirnoff 2005-10-01 18:56:19 +00:00
parent 5997cae9a4
commit 4092996774
25 changed files with 853 additions and 751 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
sys/amd64/amd64/trap.c
View File

@ -146,11 +146,6 @@ SYSCTL_INT(_machdep, OID_AUTO, panic_on_nmi, CTLFLAG_RW,
extern char *syscallnames[];
#endif
#ifdef DEVICE_POLLING
extern u_int32_t poll_in_trap;
extern int ether_poll(int count);
#endif /* DEVICE_POLLING */
/*
* Exception, fault, and trap interface to the FreeBSD kernel.
* This common code is called from assembly language IDT gate entry
@ -241,11 +236,6 @@ trap(frame)
trap_fatal(&frame, frame.tf_addr);
}
#ifdef DEVICE_POLLING
if (poll_in_trap)
ether_poll(poll_in_trap);
#endif /* DEVICE_POLLING */
if (ISPL(frame.tf_cs) == SEL_UPL) {
/* user trap */

69
sys/dev/dc/if_dc.c
View File

@ -2265,10 +2265,10 @@ dc_attach(device_t dev)
*/
ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
ifp->if_capabilities |= IFCAP_VLAN_MTU;
ifp->if_capenable = ifp->if_capabilities;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif
ifp->if_capenable = ifp->if_capabilities;
callout_init_mtx(&sc->dc_stat_ch, &sc->dc_mtx, 0);
@ -2339,6 +2339,11 @@ dc_detach(device_t dev)
ifp = sc->dc_ifp;
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
/* These should only be active if attach succeeded */
if (device_is_attached(dev)) {
DC_LOCK(sc);
@ -2704,7 +2709,7 @@ dc_rxeof(struct dc_softc *sc)
while (!(le32toh(sc->dc_ldata->dc_rx_list[i].dc_status) &
DC_RXSTAT_OWN)) {
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
if (sc->rxcycles <= 0)
break;
sc->rxcycles--;
@ -3038,16 +3043,13 @@ dc_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
{
struct dc_softc *sc = ifp->if_softc;
if (!(ifp->if_capenable & IFCAP_POLLING)) {
ether_poll_deregister(ifp);
cmd = POLL_DEREGISTER;
}
if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */
/* Re-enable interrupts. */
CSR_WRITE_4(sc, DC_IMR, DC_INTRS);
DC_LOCK(sc);
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
DC_UNLOCK(sc);
return;
}
DC_LOCK(sc);
sc->rxcycles = count;
dc_rxeof(sc);
dc_txeof(sc);
@ -3111,12 +3113,9 @@ dc_intr(void *arg)
DC_LOCK(sc);
ifp = sc->dc_ifp;
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING)
goto done;
if ((ifp->if_capenable & IFCAP_POLLING) &&
ether_poll_register(dc_poll, ifp)) { /* ok, disable interrupts */
CSR_WRITE_4(sc, DC_IMR, 0x00000000);
goto done;
if (ifp->if_capenable & IFCAP_POLLING) {
DC_UNLOCK(sc);
return;
}
#endif
@ -3183,10 +3182,6 @@ dc_intr(void *arg)
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
dc_start_locked(ifp);
#ifdef DEVICE_POLLING
done:
#endif
DC_UNLOCK(sc);
}
@ -3534,7 +3529,7 @@ dc_init_locked(struct dc_softc *sc)
* the case of polling. Some cards (e.g. fxp) turn interrupts on
* after a reset.
*/
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
CSR_WRITE_4(sc, DC_IMR, 0x00000000);
else
#endif
@ -3686,10 +3681,31 @@ dc_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
#endif
break;
case SIOCSIFCAP:
DC_LOCK(sc);
ifp->if_capenable &= ~IFCAP_POLLING;
ifp->if_capenable |= ifr->ifr_reqcap & IFCAP_POLLING;
DC_UNLOCK(sc);
#ifdef DEVICE_POLLING
if (ifr->ifr_reqcap & IFCAP_POLLING &&
!(ifp->if_capenable & IFCAP_POLLING)) {
error = ether_poll_register(dc_poll, ifp);
if (error)
return(error);
DC_LOCK(sc);
/* Disable interrupts */
CSR_WRITE_4(sc, DC_IMR, 0x00000000);
ifp->if_capenable |= IFCAP_POLLING;
DC_UNLOCK(sc);
return (error);
}
if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
ifp->if_capenable & IFCAP_POLLING) {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
DC_LOCK(sc);
CSR_WRITE_4(sc, DC_IMR, DC_INTRS);
ifp->if_capenable &= ~IFCAP_POLLING;
DC_UNLOCK(sc);
return (error);
}
#endif /* DEVICE_POLLING */
break;
default:
error = ether_ioctl(ifp, command, data);
@ -3744,9 +3760,6 @@ dc_stop(struct dc_softc *sc)
callout_stop(&sc->dc_stat_ch);
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
#ifdef DEVICE_POLLING
ether_poll_deregister(ifp);
#endif
DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_RX_ON | DC_NETCFG_TX_ON));
CSR_WRITE_4(sc, DC_IMR, 0x00000000);

71
sys/dev/em/if_em.c
View File

@ -197,6 +197,9 @@ static int em_sysctl_int_delay(SYSCTL_HANDLER_ARGS);
static void em_add_int_delay_sysctl(struct adapter *, const char *,
const char *, struct em_int_delay_info *,
int, int);
#ifdef DEVICE_POLLING
static poll_handler_t em_poll;
#endif
/*********************************************************************
* FreeBSD Device Interface Entry Points
@ -526,6 +529,11 @@ em_detach(device_t dev)
INIT_DEBUGOUT("em_detach: begin");
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
EM_LOCK(adapter);
adapter->in_detach = 1;
em_stop(adapter);
@ -717,7 +725,7 @@ em_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
em_initialize_receive_unit(adapter);
}
#ifdef DEVICE_POLLING
if (!(ifp->if_flags & IFF_POLLING))
if (!(ifp->if_capenable & IFCAP_POLLING))
#endif
em_enable_intr(adapter);
EM_UNLOCK(adapter);
@ -732,8 +740,26 @@ em_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
IOCTL_DEBUGOUT("ioctl rcv'd: SIOCSIFCAP (Set Capabilities)");
reinit = 0;
mask = ifr->ifr_reqcap ^ ifp->if_capenable;
if (mask & IFCAP_POLLING)
ifp->if_capenable ^= IFCAP_POLLING;
#ifdef DEVICE_POLLING
if (mask & IFCAP_POLLING) {
if (ifr->ifr_reqcap & IFCAP_POLLING) {
error = ether_poll_register(em_poll, ifp);
if (error)
return(error);
EM_LOCK(adapter);
em_disable_intr(adapter);
ifp->if_capenable |= IFCAP_POLLING;
EM_UNLOCK(adapter);
} else {
error = ether_poll_deregister(ifp);
/* Enable interrupt even in error case */
EM_LOCK(adapter);
em_enable_intr(adapter);
ifp->if_capenable &= ~IFCAP_POLLING;
EM_UNLOCK(adapter);
}
}
#endif
if (mask & IFCAP_HWCSUM) {
ifp->if_capenable ^= IFCAP_HWCSUM;
reinit = 1;
@ -895,7 +921,7 @@ em_init_locked(struct adapter * adapter)
* Only enable interrupts if we are not polling, make sure
* they are off otherwise.
*/
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
em_disable_intr(adapter);
else
#endif /* DEVICE_POLLING */
@ -920,8 +946,6 @@ em_init(void *arg)
#ifdef DEVICE_POLLING
static poll_handler_t em_poll;
static void
em_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count)
{
@ -930,14 +954,6 @@ em_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count)
mtx_assert(&adapter->mtx, MA_OWNED);
if (!(ifp->if_capenable & IFCAP_POLLING)) {
ether_poll_deregister(ifp);
cmd = POLL_DEREGISTER;
}
if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */
em_enable_intr(adapter);
return;
}
if (cmd == POLL_AND_CHECK_STATUS) {
reg_icr = E1000_READ_REG(&adapter->hw, ICR);
if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
@ -948,13 +964,10 @@ em_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count)
callout_reset(&adapter->timer, hz, em_local_timer, adapter);
}
}
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
em_process_receive_interrupts(adapter, count);
em_clean_transmit_interrupts(adapter);
}
em_process_receive_interrupts(adapter, count);
em_clean_transmit_interrupts(adapter);
if (ifp->if_drv_flags & IFF_DRV_RUNNING &&
!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
em_start_locked(ifp);
}
@ -964,7 +977,8 @@ em_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
struct adapter *adapter = ifp->if_softc;
EM_LOCK(adapter);
em_poll_locked(ifp, cmd, count);
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
em_poll_locked(ifp, cmd, count);
EM_UNLOCK(adapter);
}
#endif /* DEVICE_POLLING */
@ -987,18 +1001,10 @@ em_intr(void *arg)
ifp = adapter->ifp;
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
EM_UNLOCK(adapter);
return;
}
if ((ifp->if_capenable & IFCAP_POLLING) &&
ether_poll_register(em_poll, ifp)) {
em_disable_intr(adapter);
em_poll_locked(ifp, 0, 1);
EM_UNLOCK(adapter);
return;
}
#endif /* DEVICE_POLLING */
reg_icr = E1000_READ_REG(&adapter->hw, ICR);
@ -1718,9 +1724,7 @@ em_stop(void *arg)
mtx_assert(&adapter->mtx, MA_OWNED);
INIT_DEBUGOUT("em_stop: begin");
#ifdef DEVICE_POLLING
ether_poll_deregister(ifp);
#endif
em_disable_intr(adapter);
em_reset_hw(&adapter->hw);
callout_stop(&adapter->timer);
@ -1976,7 +1980,6 @@ em_setup_interface(device_t dev, struct adapter * adapter)
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
ifp->if_capenable |= IFCAP_POLLING;
#endif
/*

3
sys/dev/firewire/00README
View File

@ -70,9 +70,6 @@ IEEE 1394 support for FreeBSD-5.X and 4.X.
It also has DEVICE_POLLING[5] support. To enable it, edit your
kernel config file and Makefile.fwe then rebuild kernel and if_fwe.ko.
Note this driver checks kern.polling.enable only when enabling the
interface. When you enable polling after the interface is up,
try 'ifconfig fwe0 down;ifconfig fwe0 up'.
5. FireWire for Kernel Hackers

69
sys/dev/firewire/if_fwe.c
View File

@ -100,19 +100,6 @@ TUNABLE_INT("hw.firewire.fwe.tx_speed", &tx_speed);
TUNABLE_INT("hw.firewire.fwe.rx_queue_len", &rx_queue_len);
#ifdef DEVICE_POLLING
#define FWE_POLL_REGISTER(func, fwe, ifp) \
if (ether_poll_register(func, ifp)) { \
struct firewire_comm *fc = (fwe)->fd.fc; \
fc->set_intr(fc, 0); \
}
#define FWE_POLL_DEREGISTER(fwe, ifp) \
do { \
struct firewire_comm *fc = (fwe)->fd.fc; \
ether_poll_deregister(ifp); \
fc->set_intr(fc, 1); \
} while(0) \
static poll_handler_t fwe_poll;
static void
@ -121,19 +108,15 @@ fwe_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
struct fwe_softc *fwe;
struct firewire_comm *fc;
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
return;
fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
fc = fwe->fd.fc;
if (cmd == POLL_DEREGISTER) {
/* enable interrupts */
fc->set_intr(fc, 1);
return;
}
fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count);
}
#else
#define FWE_POLL_REGISTER(func, fwe, ifp)
#define FWE_POLL_DEREGISTER(fwe, ifp)
#endif
#endif /* DEVICE_POLLING */
static void
fwe_identify(driver_t *driver, device_t parent)
{
@ -242,7 +225,7 @@ fwe_attach(device_t dev)
/* Tell the upper layer(s) we support long frames. */
ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
#if defined(__FreeBSD__) && __FreeBSD_version >= 500000
ifp->if_capabilities |= IFCAP_VLAN_MTU;
ifp->if_capabilities |= IFCAP_VLAN_MTU & IFCAP_POLLING;
ifp->if_capenable |= IFCAP_VLAN_MTU;
#endif
@ -262,8 +245,6 @@ fwe_stop(struct fwe_softc *fwe)
fc = fwe->fd.fc;
FWE_POLL_DEREGISTER(fwe, ifp);
if (fwe->dma_ch >= 0) {
xferq = fc->ir[fwe->dma_ch];
@ -305,6 +286,11 @@ fwe_detach(device_t dev)
fwe = device_get_softc(dev);
ifp = fwe->eth_softc.ifp;
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
s = splimp();
fwe_stop(fwe);
@ -416,7 +402,6 @@ fwe_init(void *arg)
ifp->if_flags &= ~IFF_OACTIVE;
#endif
FWE_POLL_REGISTER(fwe_poll, fwe, ifp);
#if 0
/* attempt to start output */
fwe_start(ifp);
@ -468,6 +453,34 @@ fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
fwe->stream_ch, fwe->dma_ch);
splx(s);
break;
case SIOCSIFCAP:
#ifdef DEVICE_POLLING
{
struct ifreq *ifr = (struct ifreq *) data;
struct firewire_comm *fc = fc = fwe->fd.fc;
if (ifr->ifr_reqcap & IFCAP_POLLING &&
!(ifp->if_capenable & IFCAP_POLLING)) {
error = ether_poll_register(fwe_poll, ifp);
if (error)
return(error);
/* Disable interrupts */
fc->set_intr(fc, 0);
ifp->if_capenable |= IFCAP_POLLING;
return (error);
}
if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
ifp->if_capenable & IFCAP_POLLING) {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
fc->set_intr(fc, 1);
ifp->if_capenable &= ~IFCAP_POLLING;
return (error);
}
}
#endif /* DEVICE_POLLING */
break;
#if defined(__FreeBSD__) && __FreeBSD_version >= 500000
default:
#else
@ -634,9 +647,7 @@ fwe_as_input(struct fw_xferq *xferq)
fwe = (struct fwe_softc *)xferq->sc;
ifp = fwe->eth_softc.ifp;
#if 0
FWE_POLL_REGISTER(fwe_poll, fwe, ifp);
#endif
while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) {
STAILQ_REMOVE_HEAD(&xferq->stvalid, link);
fp = mtod(sxfer->mbuf, struct fw_pkt *);

76
sys/dev/firewire/if_fwip.c
View File

@ -107,19 +107,6 @@ SYSCTL_INT(_hw_firewire_fwip, OID_AUTO, rx_queue_len, CTLFLAG_RW, &rx_queue_len,
TUNABLE_INT("hw.firewire.fwip.rx_queue_len", &rx_queue_len);
#ifdef DEVICE_POLLING
#define FWIP_POLL_REGISTER(func, fwip, ifp) \
if (ether_poll_register(func, ifp)) { \
struct firewire_comm *fc = (fwip)->fd.fc; \
fc->set_intr(fc, 0); \
}
#define FWIP_POLL_DEREGISTER(fwip, ifp) \
do { \
struct firewire_comm *fc = (fwip)->fd.fc; \
ether_poll_deregister(ifp); \
fc->set_intr(fc, 1); \
} while(0) \
static poll_handler_t fwip_poll;
static void
@ -128,19 +115,15 @@ fwip_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
struct fwip_softc *fwip;
struct firewire_comm *fc;
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
return;
fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip;
fc = fwip->fd.fc;
if (cmd == POLL_DEREGISTER) {
/* enable interrupts */
fc->set_intr(fc, 1);
return;
}
fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count);
}
#else
#define FWIP_POLL_REGISTER(func, fwip, ifp)
#define FWIP_POLL_DEREGISTER(fwip, ifp)
#endif
#endif /* DEVICE_POLLING */
static void
fwip_identify(driver_t *driver, device_t parent)
{
@ -214,6 +197,9 @@ fwip_attach(device_t dev)
ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST|
IFF_NEEDSGIANT);
ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif
s = splimp();
firewire_ifattach(ifp, hwaddr);
@ -234,8 +220,6 @@ fwip_stop(struct fwip_softc *fwip)
fc = fwip->fd.fc;
FWIP_POLL_DEREGISTER(fwip, ifp);
if (fwip->dma_ch >= 0) {
xferq = fc->ir[fwip->dma_ch];
@ -279,14 +263,22 @@ static int
fwip_detach(device_t dev)
{
struct fwip_softc *fwip;
struct ifnet *ifp;
int s;
fwip = (struct fwip_softc *)device_get_softc(dev);
ifp = fwip->fw_softc.fwip_ifp;
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
s = splimp();
fwip_stop(fwip);
firewire_ifdetach(fwip->fw_softc.fwip_ifp);
if_free(fwip->fw_softc.fwip_ifp);
firewire_ifdetach(ifp);
if_free(ifp);
splx(s);
return 0;
@ -408,7 +400,6 @@ fwip_init(void *arg)
ifp->if_flags &= ~IFF_OACTIVE;
#endif
FWIP_POLL_REGISTER(fwip_poll, fwip, ifp);
#if 0
/* attempt to start output */
fwip_start(ifp);
@ -444,7 +435,34 @@ fwip_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
case SIOCADDMULTI:
case SIOCDELMULTI:
break;
case SIOCSIFCAP:
#ifdef DEVICE_POLLING
{
struct ifreq *ifr = (struct ifreq *) data;
struct firewire_comm *fc = fc = fwip->fd.fc;
if (ifr->ifr_reqcap & IFCAP_POLLING &&
!(ifp->if_capenable & IFCAP_POLLING)) {
error = ether_poll_register(fwip_poll, ifp);
if (error)
return(error);
/* Disable interrupts */
fc->set_intr(fc, 0);
ifp->if_capenable |= IFCAP_POLLING;
return (error);
}
if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
ifp->if_capenable & IFCAP_POLLING) {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
fc->set_intr(fc, 1);
ifp->if_capenable &= ~IFCAP_POLLING;
return (error);
}
}
#endif /* DEVICE_POLLING */
break;
#if defined(__FreeBSD__) && __FreeBSD_version >= 500000
default:
#else
@ -757,9 +775,7 @@ fwip_stream_input(struct fw_xferq *xferq)
fwip = (struct fwip_softc *)xferq->sc;
ifp = fwip->fw_softc.fwip_ifp;
#if 0
FWIP_POLL_REGISTER(fwip_poll, fwip, ifp);
#endif
while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) {
STAILQ_REMOVE_HEAD(&xferq->stvalid, link);
fp = mtod(sxfer->mbuf, struct fw_pkt *);

56
sys/dev/fxp/if_fxp.c
View File

@ -773,7 +773,6 @@ fxp_attach(device_t dev)
#ifdef DEVICE_POLLING
/* Inform the world we support polling. */
ifp->if_capabilities |= IFCAP_POLLING;
ifp->if_capenable |= IFCAP_POLLING;
#endif
/*
@ -891,6 +890,11 @@ fxp_detach(device_t dev)
{
struct fxp_softc *sc = device_get_softc(dev);
#ifdef DEVICE_POLLING
if (sc->ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(sc->ifp);
#endif
FXP_LOCK(sc);
sc->suspended = 1; /* Do same thing as we do for suspend */
/*
@ -1448,15 +1452,11 @@ fxp_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
uint8_t statack;
FXP_LOCK(sc);
if (!(ifp->if_capenable & IFCAP_POLLING)) {
ether_poll_deregister(ifp);
cmd = POLL_DEREGISTER;
}
if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */
CSR_WRITE_1(sc, FXP_CSR_SCB_INTRCNTL, 0);
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
FXP_UNLOCK(sc);
return;
}
statack = FXP_SCB_STATACK_CXTNO | FXP_SCB_STATACK_CNA |
FXP_SCB_STATACK_FR;
if (cmd == POLL_AND_CHECK_STATUS) {
@ -1495,18 +1495,10 @@ fxp_intr(void *xsc)
}
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
FXP_UNLOCK(sc);
return;
}
if ((ifp->if_capenable & IFCAP_POLLING) &&
ether_poll_register(fxp_poll, ifp)) {
/* disable interrupts */
CSR_WRITE_1(sc, FXP_CSR_SCB_INTRCNTL, FXP_SCB_INTR_DISABLE);
FXP_UNLOCK(sc);
fxp_poll(ifp, 0, 1);
return;
}
#endif
while ((statack = CSR_READ_1(sc, FXP_CSR_SCB_STATACK)) != 0) {
/*
@ -1837,9 +1829,6 @@ fxp_stop(struct fxp_softc *sc)
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
ifp->if_timer = 0;
#ifdef DEVICE_POLLING
ether_poll_deregister(ifp);
#endif
/*
* Cancel stats updater.
*/
@ -2163,7 +2152,7 @@ fxp_init_body(struct fxp_softc *sc)
* ... but only do that if we are not polling. And because (presumably)
* the default is interrupts on, we need to disable them explicitly!
*/
if ( ifp->if_flags & IFF_POLLING )
if (ifp->if_capenable & IFCAP_POLLING )
CSR_WRITE_1(sc, FXP_CSR_SCB_INTRCNTL, FXP_SCB_INTR_DISABLE);
else
#endif /* DEVICE_POLLING */
@ -2418,11 +2407,30 @@ fxp_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
break;
case SIOCSIFCAP:
FXP_LOCK(sc);
mask = ifp->if_capenable ^ ifr->ifr_reqcap;
if (mask & IFCAP_POLLING)
ifp->if_capenable ^= IFCAP_POLLING;
#ifdef DEVICE_POLLING
if (mask & IFCAP_POLLING) {
if (ifr->ifr_reqcap & IFCAP_POLLING) {
error = ether_poll_register(fxp_poll, ifp);
if (error)
return(error);
FXP_LOCK(sc);
CSR_WRITE_1(sc, FXP_CSR_SCB_INTRCNTL,
FXP_SCB_INTR_DISABLE);
ifp->if_capenable |= IFCAP_POLLING;
FXP_UNLOCK(sc);
} else {
error = ether_poll_deregister(ifp);
/* Enable interrupts in any case */
FXP_LOCK(sc);
CSR_WRITE_1(sc, FXP_CSR_SCB_INTRCNTL, 0);
ifp->if_capenable &= ~IFCAP_POLLING;
FXP_UNLOCK(sc);
}
}
#endif
if (mask & IFCAP_VLAN_MTU) {
FXP_LOCK(sc);
ifp->if_capenable ^= IFCAP_VLAN_MTU;
if (sc->revision != FXP_REV_82557)
flag = FXP_FLAG_LONG_PKT_EN;
@ -2431,8 +2439,8 @@ fxp_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
sc->flags ^= flag;
if (ifp->if_flags & IFF_UP)
fxp_init_body(sc);
FXP_UNLOCK(sc);
}
FXP_UNLOCK(sc);
break;
default:

15
sys/dev/ixgb/README
View File

@ -196,18 +196,17 @@ all PRO/10GbE adapters.
options DEVICE_POLLING
options HZ=1000
At runtime, use the following command to turn on polling mode. Similarly,
turn off polling mode by setting the variable to 0:
At runtime, use the following command to turn on polling mode.
sysctl kern.polling.enable=1
ifconfig ixgb0 polling
Similarly, turn off polling mode by removing IFCAP_POLLING flag from
interface:
NOTES: DEVICE POLLING is only valid for non-SMP kernels.
The driver has to be built into the kernel for DEVICE POLLING to be
enabled in the driver.
ifconfig ixgb0 -polling
The driver has to be built into the kernel for DEVICE POLLING to be
enabled in the driver.
Support
=======

77
sys/dev/ixgb/if_ixgb.c
View File

@ -141,6 +141,9 @@ static int
ixgb_dma_malloc(struct adapter *, bus_size_t,
struct ixgb_dma_alloc *, int);
static void ixgb_dma_free(struct adapter *, struct ixgb_dma_alloc *);
#ifdef DEVICE_POLLING
static poll_handler_t ixgb_poll;
#endif
/*********************************************************************
* FreeBSD Device Interface Entry Points
@ -368,6 +371,11 @@ ixgb_detach(device_t dev)
INIT_DEBUGOUT("ixgb_detach: begin");
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
IXGB_LOCK(adapter);
adapter->in_detach = 1;
@ -557,6 +565,26 @@ ixgb_ioctl(struct ifnet * ifp, IOCTL_CMD_TYPE command, caddr_t data)
case SIOCSIFCAP:
IOCTL_DEBUGOUT("ioctl rcv'd: SIOCSIFCAP (Set Capabilities)");
mask = ifr->ifr_reqcap ^ ifp->if_capenable;
#ifdef DEVICE_POLLING
if (mask & IFCAP_POLLING) {
if (ifr->ifr_reqcap & IFCAP_POLLING) {
error = ether_poll_register(ixgb_poll, ifp);
if (error)
return(error);
IXGB_LOCK(adapter);
ixgb_disable_intr(adapter);
ifp->if_capenable |= IFCAP_POLLING;
IXGB_UNLOCK(adapter);
} else {
error = ether_poll_deregister(ifp);
/* Enable interrupt even in error case */
IXGB_LOCK(adapter);
ixgb_enable_intr(adapter);
ifp->if_capenable &= ~IFCAP_POLLING;
IXGB_UNLOCK(adapter);
}
}
#endif /* DEVICE_POLLING */
if (mask & IFCAP_HWCSUM) {
if (IFCAP_HWCSUM & ifp->if_capenable)
ifp->if_capenable &= ~IFCAP_HWCSUM;
@ -695,10 +723,10 @@ ixgb_init_locked(struct adapter *adapter)
* Only disable interrupts if we are polling, make sure they are on
* otherwise.
*/
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
ixgb_disable_intr(adapter);
else
#endif /* DEVICE_POLLING */
#endif
ixgb_enable_intr(adapter);
return;
@ -716,8 +744,6 @@ ixgb_init(void *arg)
}
#ifdef DEVICE_POLLING
static poll_handler_t ixgb_poll;
static void
ixgb_poll_locked(struct ifnet * ifp, enum poll_cmd cmd, int count)
{
@ -726,15 +752,6 @@ ixgb_poll_locked(struct ifnet * ifp, enum poll_cmd cmd, int count)
IXGB_LOCK_ASSERT(adapter);
if (!(ifp->if_capenable & IFCAP_POLLING)) {
ether_poll_deregister(ifp);
cmd = POLL_DEREGISTER;
}
if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */
ixgb_enable_intr(adapter);
return;
}
if (cmd == POLL_AND_CHECK_STATUS) {
reg_icr = IXGB_READ_REG(&adapter->hw, ICR);
if (reg_icr & (IXGB_INT_RXSEQ | IXGB_INT_LSC)) {
@ -745,12 +762,10 @@ ixgb_poll_locked(struct ifnet * ifp, enum poll_cmd cmd, int count)
adapter);
}
}
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
ixgb_process_receive_interrupts(adapter, count);
ixgb_clean_transmit_interrupts(adapter);
}
if (ifp->if_drv_flags & IFF_DRV_RUNNING &&
ifp->if_snd.ifq_head != NULL)
ixgb_process_receive_interrupts(adapter, count);
ixgb_clean_transmit_interrupts(adapter);
if (ifp->if_snd.ifq_head != NULL)
ixgb_start_locked(ifp);
}
@ -760,10 +775,11 @@ ixgb_poll(struct ifnet * ifp, enum poll_cmd cmd, int count)
struct adapter *adapter = ifp->if_softc;
IXGB_LOCK(adapter);
ixgb_poll_locked(ifp, cmd, count);
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
ixgb_poll_locked(ifp, cmd, count);
IXGB_UNLOCK(adapter);
}
#endif /* DEVICE_POLLING */
#endif /* DEVICE_POLLING */
/*********************************************************************
*
@ -785,19 +801,11 @@ ixgb_intr(void *arg)
ifp = adapter->ifp;
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
IXGB_UNLOCK(adapter);
return;
}
if ((ifp->if_capenable & IFCAP_POLLING) &&
ether_poll_register(ixgb_poll, ifp)) {
ixgb_disable_intr(adapter);
ixgb_poll_locked(ifp, 0, 1);
IXGB_UNLOCK(adapter);
return;
}
#endif /* DEVICE_POLLING */
#endif
reg_icr = IXGB_READ_REG(&adapter->hw, ICR);
if (reg_icr == 0) {
@ -1355,9 +1363,6 @@ ixgb_setup_interface(device_t dev, struct adapter * adapter)
#endif
ifp->if_capabilities = IFCAP_HWCSUM;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif
/*
* Tell the upper layer(s) we support long frames.
@ -1370,6 +1375,10 @@ ixgb_setup_interface(device_t dev, struct adapter * adapter)
ifp->if_capenable = ifp->if_capabilities;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif
/*
* Specify the media types supported by this adapter and register
* callbacks to update media and link information

62
sys/dev/nge/if_nge.c
View File

@ -869,10 +869,10 @@ nge_attach(dev)
ifp->if_snd.ifq_maxlen = NGE_TX_LIST_CNT - 1;
ifp->if_hwassist = NGE_CSUM_FEATURES;
ifp->if_capabilities = IFCAP_HWCSUM | IFCAP_VLAN_HWTAGGING;
ifp->if_capenable = ifp->if_capabilities;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif
ifp->if_capenable = ifp->if_capabilities;
/*
* Do MII setup.
@ -958,6 +958,10 @@ nge_detach(dev)
sc = device_get_softc(dev);
ifp = sc->nge_ifp;
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
NGE_LOCK(sc);
nge_reset(sc);
nge_stop(sc);
@ -1126,12 +1130,12 @@ nge_rxeof(sc)
u_int32_t extsts;
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
if (sc->rxcycles <= 0)
break;
sc->rxcycles--;
}
#endif /* DEVICE_POLLING */
#endif
cur_rx = &sc->nge_ldata->nge_rx_list[i];
rxstat = cur_rx->nge_rxstat;
@ -1376,12 +1380,7 @@ nge_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
struct nge_softc *sc = ifp->if_softc;
NGE_LOCK(sc);
if (!(ifp->if_capenable & IFCAP_POLLING)) {
ether_poll_deregister(ifp);
cmd = POLL_DEREGISTER;
}
if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */
CSR_WRITE_4(sc, NGE_IER, 1);
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
NGE_UNLOCK(sc);
return;
}
@ -1433,18 +1432,11 @@ nge_intr(arg)
NGE_LOCK(sc);
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
NGE_UNLOCK(sc);
return;
}
if ((ifp->if_capenable & IFCAP_POLLING) &&
ether_poll_register(nge_poll, ifp)) { /* ok, disable interrupts */
CSR_WRITE_4(sc, NGE_IER, 0);
NGE_UNLOCK(sc);
nge_poll(ifp, 0, 1);
return;
}
#endif /* DEVICE_POLLING */
#endif
/* Supress unwanted interrupts */
if (!(ifp->if_flags & IFF_UP)) {
@ -1840,10 +1832,10 @@ nge_init_locked(sc)
* ... only enable interrupts if we are not polling, make sure
* they are off otherwise.
*/
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
CSR_WRITE_4(sc, NGE_IER, 0);
else
#endif /* DEVICE_POLLING */
#endif
CSR_WRITE_4(sc, NGE_IER, 1);
/* Enable receiver and transmitter. */
@ -2047,8 +2039,31 @@ nge_ioctl(ifp, command, data)
}
break;
case SIOCSIFCAP:
ifp->if_capenable &= ~IFCAP_POLLING;
ifp->if_capenable |= ifr->ifr_reqcap & IFCAP_POLLING;
#ifdef DEVICE_POLLING
if (ifr->ifr_reqcap & IFCAP_POLLING &&
!(ifp->if_capenable & IFCAP_POLLING)) {
error = ether_poll_register(nge_poll, ifp);
if (error)
return(error);
NGE_LOCK(sc);
/* Disable interrupts */
CSR_WRITE_4(sc, NGE_IER, 0);
ifp->if_capenable |= IFCAP_POLLING;
NGE_UNLOCK(sc);
return (error);
}
if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
ifp->if_capenable & IFCAP_POLLING) {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
NGE_LOCK(sc);
CSR_WRITE_4(sc, NGE_IER, 1);
ifp->if_capenable &= ~IFCAP_POLLING;
NGE_UNLOCK(sc);
return (error);
}
#endif /* DEVICE_POLLING */
break;
default:
error = ether_ioctl(ifp, command, data);
@ -2105,9 +2120,6 @@ nge_stop(sc)
}
callout_stop(&sc->nge_stat_ch);
#ifdef DEVICE_POLLING
ether_poll_deregister(ifp);
#endif
CSR_WRITE_4(sc, NGE_IER, 0);
CSR_WRITE_4(sc, NGE_IMR, 0);
NGE_SETBIT(sc, NGE_CSR, NGE_CSR_TX_DISABLE|NGE_CSR_RX_DISABLE);

89
sys/dev/re/if_re.c
View File

@ -1202,6 +1202,7 @@ re_attach(dev)
ifp->if_start = re_start;
ifp->if_hwassist = /*RE_CSUM_FEATURES*/0;
ifp->if_capabilities |= IFCAP_HWCSUM|IFCAP_VLAN_HWTAGGING;
ifp->if_capenable = ifp->if_capabilities & ~IFCAP_HWCSUM;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif
@ -1214,7 +1215,6 @@ re_attach(dev)
IFQ_SET_MAXLEN(&ifp->if_snd, RL_IFQ_MAXLEN);
ifp->if_snd.ifq_drv_maxlen = RL_IFQ_MAXLEN;
IFQ_SET_READY(&ifp->if_snd);
ifp->if_capenable = ifp->if_capabilities & ~IFCAP_HWCSUM;
/*
* Call MI attach routine.
@ -1264,6 +1264,11 @@ re_detach(dev)
ifp = sc->rl_ifp;
KASSERT(mtx_initialized(&sc->rl_mtx), ("re mutex not initialized"));
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
/* These should only be active if attach succeeded */
if (device_is_attached(dev)) {
RL_LOCK(sc);
@ -1756,7 +1761,8 @@ re_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
struct rl_softc *sc = ifp->if_softc;
RL_LOCK(sc);
re_poll_locked(ifp, cmd, count);
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
re_poll_locked(ifp, cmd, count);
RL_UNLOCK(sc);
}
@ -1767,15 +1773,6 @@ re_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count)
RL_LOCK_ASSERT(sc);
if (!(ifp->if_capenable & IFCAP_POLLING)) {
ether_poll_deregister(ifp);
cmd = POLL_DEREGISTER;
}
if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */
CSR_WRITE_2(sc, RL_IMR, RL_INTRS_CPLUS);
return;
}
sc->rxcycles = count;
re_rxeof(sc);
re_txeof(sc);
@ -1822,15 +1819,9 @@ re_intr(arg)
goto done_locked;
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
goto done_locked;
if ((ifp->if_capenable & IFCAP_POLLING) &&
ether_poll_register(re_poll, ifp)) { /* ok, disable interrupts */
CSR_WRITE_2(sc, RL_IMR, 0x0000);
re_poll_locked(ifp, 0, 1);
goto done_locked;
}
#endif /* DEVICE_POLLING */
#endif
for (;;) {
@ -2171,10 +2162,10 @@ re_init_locked(sc)
/*
* Disable interrupts if we are polling.
*/
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
CSR_WRITE_2(sc, RL_IMR, 0);
else /* otherwise ... */
#endif /* DEVICE_POLLING */
#endif
/*
* Enable interrupts.
*/
@ -2289,7 +2280,7 @@ re_ioctl(ifp, command, data)
struct rl_softc *sc = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *) data;
struct mii_data *mii;
int error;
int error = 0;
switch (command) {
case SIOCSIFMTU:
@ -2298,7 +2289,6 @@ re_ioctl(ifp, command, data)
error = EINVAL;
ifp->if_mtu = ifr->ifr_mtu;
RL_UNLOCK(sc);
error = 0;
break;
case SIOCSIFFLAGS:
RL_LOCK(sc);
@ -2307,14 +2297,12 @@ re_ioctl(ifp, command, data)
else if (ifp->if_drv_flags & IFF_DRV_RUNNING)
re_stop(sc);
RL_UNLOCK(sc);
error = 0;
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
RL_LOCK(sc);
re_setmulti(sc);
RL_UNLOCK(sc);
error = 0;
break;
case SIOCGIFMEDIA:
case SIOCSIFMEDIA:
@ -2322,18 +2310,42 @@ re_ioctl(ifp, command, data)
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
break;
case SIOCSIFCAP:
RL_LOCK(sc);
ifp->if_capenable &= ~(IFCAP_HWCSUM | IFCAP_POLLING);
ifp->if_capenable |=
ifr->ifr_reqcap & (IFCAP_HWCSUM | IFCAP_POLLING);
if (ifp->if_capenable & IFCAP_TXCSUM)
ifp->if_hwassist = RE_CSUM_FEATURES;
else
ifp->if_hwassist = 0;
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
re_init_locked(sc);
RL_UNLOCK(sc);
error = 0;
{
int mask = ifr->ifr_reqcap ^ ifp->if_capenable;
#ifdef DEVICE_POLLING
if (mask & IFCAP_POLLING) {
if (ifr->ifr_reqcap & IFCAP_POLLING) {
error = ether_poll_register(re_poll, ifp);
if (error)
return(error);
RL_LOCK(sc);
/* Disable interrupts */
CSR_WRITE_2(sc, RL_IMR, 0x0000);
ifp->if_capenable |= IFCAP_POLLING;
RL_UNLOCK(sc);
} else {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
RL_LOCK(sc);
CSR_WRITE_2(sc, RL_IMR, RL_INTRS_CPLUS);
ifp->if_capenable &= ~IFCAP_POLLING;
RL_UNLOCK(sc);
}
}
#endif /* DEVICE_POLLING */
if (mask & IFCAP_HWCSUM) {
RL_LOCK(sc);
ifp->if_capenable |= ifr->ifr_reqcap & IFCAP_HWCSUM;
if (ifp->if_capenable & IFCAP_TXCSUM)
ifp->if_hwassist = RE_CSUM_FEATURES;
else
ifp->if_hwassist = 0;
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
re_init_locked(sc);
RL_UNLOCK(sc);
}
}
break;
default:
error = ether_ioctl(ifp, command, data);
@ -2379,9 +2391,6 @@ re_stop(sc)
callout_stop(&sc->rl_stat_callout);
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
#ifdef DEVICE_POLLING
ether_poll_deregister(ifp);
#endif /* DEVICE_POLLING */
CSR_WRITE_1(sc, RL_COMMAND, 0x00);
CSR_WRITE_2(sc, RL_IMR, 0x0000);

89
sys/dev/sf/if_sf.c
View File

@ -165,11 +165,9 @@ static int sf_miibus_readreg(device_t, int, int);
static int sf_miibus_writereg(device_t, int, int, int);
static void sf_miibus_statchg(device_t);
#ifdef DEVICE_POLLING
static void sf_poll(struct ifnet *ifp, enum poll_cmd cmd,
int count);
static void sf_poll_locked(struct ifnet *ifp, enum poll_cmd cmd,
int count);
#endif /* DEVICE_POLLING */
static void sf_poll(struct ifnet *ifp, enum poll_cmd cmd, int count);
static void sf_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count);
#endif
static u_int32_t csr_read_4(struct sf_softc *, int);
static void csr_write_4(struct sf_softc *, int, u_int32_t);
@ -560,10 +558,31 @@ sf_ioctl(ifp, command, data)
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
break;
case SIOCSIFCAP:
SF_LOCK(sc);
ifp->if_capenable &= ~IFCAP_POLLING;
ifp->if_capenable |= ifr->ifr_reqcap & IFCAP_POLLING;
SF_UNLOCK(sc);
#ifdef DEVICE_POLLING
if (ifr->ifr_reqcap & IFCAP_POLLING &&
!(ifp->if_capenable & IFCAP_POLLING)) {
error = ether_poll_register(sf_poll, ifp);
if (error)
return(error);
SF_LOCK(sc);
/* Disable interrupts */
csr_write_4(sc, SF_IMR, 0x00000000);
ifp->if_capenable |= IFCAP_POLLING;
SF_UNLOCK(sc);
return (error);
}
if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
ifp->if_capenable & IFCAP_POLLING) {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
SF_LOCK(sc);
csr_write_4(sc, SF_IMR, SF_INTRS);
ifp->if_capenable &= ~IFCAP_POLLING;
SF_UNLOCK(sc);
return (error);
}
#endif /* DEVICE_POLLING */
break;
default:
error = ether_ioctl(ifp, command, data);
@ -749,10 +768,10 @@ sf_attach(dev)
IFQ_SET_MAXLEN(&ifp->if_snd, SF_TX_DLIST_CNT - 1);
ifp->if_snd.ifq_drv_maxlen = SF_TX_DLIST_CNT - 1;
IFQ_SET_READY(&ifp->if_snd);
ifp->if_capenable = ifp->if_capabilities;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif /* DEVICE_POLLING */
ifp->if_capenable = ifp->if_capabilities;
#endif
/*
* Call MI attach routine.
@ -794,6 +813,11 @@ sf_detach(dev)
KASSERT(mtx_initialized(&sc->sf_mtx), ("sf mutex not initialized"));
ifp = sc->sf_ifp;
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
/* These should only be active if attach succeeded */
if (device_is_attached(dev)) {
SF_LOCK(sc);
@ -946,12 +970,12 @@ sf_rxeof(sc)
struct mbuf *m0;
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
if (sc->rxcycles <= 0)
break;
sc->rxcycles--;
}
#endif /* DEVICE_POLLING */
#endif
cur_rx = &sc->sf_ldata->sf_rx_clist[cmpconsidx];
desc = &sc->sf_ldata->sf_rx_dlist_big[cur_rx->sf_endidx];
@ -1068,7 +1092,8 @@ sf_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
struct sf_softc *sc = ifp->if_softc;
SF_LOCK(sc);
sf_poll_locked(ifp, cmd, count);
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
sf_poll_locked(ifp, cmd, count);
SF_UNLOCK(sc);
}
@ -1079,17 +1104,6 @@ sf_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count)
SF_LOCK_ASSERT(sc);
if (!(ifp->if_capenable & IFCAP_POLLING)) {
ether_poll_deregister(ifp);
cmd = POLL_DEREGISTER;
}
if (cmd == POLL_DEREGISTER) {
/* Final call, enable interrupts. */
csr_write_4(sc, SF_IMR, SF_INTRS);
return;
}
sc->rxcycles = count;
sf_rxeof(sc);
sf_txeof(sc);
@ -1131,17 +1145,11 @@ sf_intr(arg)
ifp = sc->sf_ifp;
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING)
goto done_locked;
if ((ifp->if_capenable & IFCAP_POLLING) &&
ether_poll_register(sf_poll, ifp)) {
/* OK, disable interrupts. */
csr_write_4(sc, SF_IMR, 0x00000000);
sf_poll_locked(ifp, 0, 1);
goto done_locked;
if (ifp->if_capenable & IFCAP_POLLING) {
SF_UNLOCK(sc);
return;
}
#endif /* DEVICE_POLLING */
#endif
if (!(csr_read_4(sc, SF_ISR_SHADOW) & SF_ISR_PCIINT_ASSERTED)) {
SF_UNLOCK(sc);
@ -1185,9 +1193,6 @@ sf_intr(arg)
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
sf_start_locked(ifp);
#ifdef DEVICE_POLLING
done_locked:
#endif /* DEVICE_POLLING */
SF_UNLOCK(sc);
}
@ -1296,10 +1301,10 @@ sf_init_locked(sc)
#ifdef DEVICE_POLLING
/* Disable interrupts if we are polling. */
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
csr_write_4(sc, SF_IMR, 0x00000000);
else
#endif /* DEVICE_POLLING */
#endif
/* Enable interrupts. */
csr_write_4(sc, SF_IMR, SF_INTRS);
@ -1478,10 +1483,6 @@ sf_stop(sc)
callout_stop(&sc->sf_stat_callout);
#ifdef DEVICE_POLLING
ether_poll_deregister(ifp);
#endif /* DEVICE_POLLING */
csr_write_4(sc, SF_GEN_ETH_CTL, 0);
csr_write_4(sc, SF_CQ_CONSIDX, 0);
csr_write_4(sc, SF_CQ_PRODIDX, 0);

105
sys/dev/vge/if_vge.c
View File

@ -1051,16 +1051,14 @@ vge_attach(dev)
ifp->if_start = vge_start;
ifp->if_hwassist = VGE_CSUM_FEATURES;
ifp->if_capabilities |= IFCAP_HWCSUM|IFCAP_VLAN_HWTAGGING;
ifp->if_capenable = ifp->if_capabilities;
#ifdef DEVICE_POLLING
#ifdef IFCAP_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif
#endif
ifp->if_watchdog = vge_watchdog;
ifp->if_init = vge_init;
ifp->if_baudrate = 1000000000;
ifp->if_snd.ifq_maxlen = VGE_IFQ_MAXLEN;
ifp->if_capenable = ifp->if_capabilities;
TASK_INIT(&sc->vge_txtask, 0, vge_tx_task, ifp);
@ -1105,6 +1103,11 @@ vge_detach(dev)
KASSERT(mtx_initialized(&sc->vge_mtx), ("vge mutex not initialized"));
ifp = sc->vge_ifp;
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
/* These should only be active if attach succeeded */
if (device_is_attached(dev)) {
vge_stop(sc);
@ -1351,12 +1354,12 @@ vge_rxeof(sc)
while (!VGE_OWN(&sc->vge_ldata.vge_rx_list[i])) {
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
if (sc->rxcycles <= 0)
break;
sc->rxcycles--;
}
#endif /* DEVICE_POLLING */
#endif
cur_rx = &sc->vge_ldata.vge_rx_list[i];
m = sc->vge_ldata.vge_rx_mbuf[i];
@ -1617,18 +1620,8 @@ vge_poll (struct ifnet *ifp, enum poll_cmd cmd, int count)
struct vge_softc *sc = ifp->if_softc;
VGE_LOCK(sc);
#ifdef IFCAP_POLLING
if (!(ifp->if_capenable & IFCAP_POLLING)) {
ether_poll_deregister(ifp);
cmd = POLL_DEREGISTER;
}
#endif
if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */
CSR_WRITE_4(sc, VGE_IMR, VGE_INTRS);
CSR_WRITE_4(sc, VGE_ISR, 0xFFFFFFFF);
CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_INT_GMSK);
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
goto done;
}
sc->rxcycles = count;
vge_rxeof(sc);
@ -1692,20 +1685,11 @@ vge_intr(arg)
}
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING)
goto done;
if (
#ifdef IFCAP_POLLING
(ifp->if_capenable & IFCAP_POLLING) &&
#endif
ether_poll_register(vge_poll, ifp)) { /* ok, disable interrupts */
CSR_WRITE_4(sc, VGE_IMR, 0);
CSR_WRITE_1(sc, VGE_CRC3, VGE_CR3_INT_GMSK);
vge_poll(ifp, 0, 1);
goto done;
if (ifp->if_capenable & IFCAP_POLLING) {
VGE_UNLOCK(sc);
return;
}
#endif /* DEVICE_POLLING */
#endif
/* Disable interrupts */
CSR_WRITE_1(sc, VGE_CRC3, VGE_CR3_INT_GMSK);
@ -1745,9 +1729,6 @@ vge_intr(arg)
/* Re-enable interrupts */
CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_INT_GMSK);
#ifdef DEVICE_POLLING
done:
#endif
VGE_UNLOCK(sc);
#if __FreeBSD_version < 502114
@ -2104,11 +2085,11 @@ vge_init(xsc)
/*
* Disable interrupts if we are polling.
*/
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
CSR_WRITE_4(sc, VGE_IMR, 0);
CSR_WRITE_1(sc, VGE_CRC3, VGE_CR3_INT_GMSK);
} else /* otherwise ... */
#endif /* DEVICE_POLLING */
#endif
{
/*
* Enable interrupts.
@ -2268,23 +2249,42 @@ vge_ioctl(ifp, command, data)
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
break;
case SIOCSIFCAP:
#ifdef IFCAP_POLLING
ifp->if_capenable &= ~(IFCAP_HWCSUM | IFCAP_POLLING);
#else
ifp->if_capenable &= ~(IFCAP_HWCSUM);
#endif
ifp->if_capenable |=
#ifdef IFCAP_POLLING
ifr->ifr_reqcap & (IFCAP_HWCSUM | IFCAP_POLLING);
#else
ifr->ifr_reqcap & (IFCAP_HWCSUM);
#endif
if (ifp->if_capenable & IFCAP_TXCSUM)
ifp->if_hwassist = VGE_CSUM_FEATURES;
else
ifp->if_hwassist = 0;
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
vge_init(sc);
{
int mask = ifr->ifr_reqcap ^ ifp->if_capenable;
#ifdef DEVICE_POLLING
if (mask & IFCAP_POLLING) {
if (ifr->ifr_reqcap & IFCAP_POLLING) {
error = ether_poll_register(vge_poll, ifp);
if (error)
return(error);
VGE_LOCK(sc);
/* Disable interrupts */
CSR_WRITE_4(sc, VGE_IMR, 0);
CSR_WRITE_1(sc, VGE_CRC3, VGE_CR3_INT_GMSK);
ifp->if_capenable |= IFCAP_POLLING;
VGE_UNLOCK(sc);
} else {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
VGE_LOCK(sc);
CSR_WRITE_4(sc, VGE_IMR, VGE_INTRS);
CSR_WRITE_4(sc, VGE_ISR, 0xFFFFFFFF);
CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_INT_GMSK);
ifp->if_capenable &= ~IFCAP_POLLING;
VGE_UNLOCK(sc);
}
}
#endif /* DEVICE_POLLING */
if (mask & IFCAP_HWCSUM) {
ifp->if_capenable |= ifr->ifr_reqcap & (IFCAP_HWCSUM);
if (ifp->if_capenable & IFCAP_TXCSUM)
ifp->if_hwassist = VGE_CSUM_FEATURES;
else
ifp->if_hwassist = 0;
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
vge_init(sc);
}
}
break;
default:
error = ether_ioctl(ifp, command, data);
@ -2331,9 +2331,6 @@ vge_stop(sc)
ifp->if_timer = 0;
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
#ifdef DEVICE_POLLING
ether_poll_deregister(ifp);
#endif /* DEVICE_POLLING */
CSR_WRITE_1(sc, VGE_CRC3, VGE_CR3_INT_GMSK);
CSR_WRITE_1(sc, VGE_CRS0, VGE_CR0_STOP);

70
sys/dev/vr/if_vr.c
View File

@ -742,10 +742,10 @@ vr_attach(dev)
IFQ_SET_MAXLEN(&ifp->if_snd, VR_TX_LIST_CNT - 1);
ifp->if_snd.ifq_maxlen = VR_TX_LIST_CNT - 1;
IFQ_SET_READY(&ifp->if_snd);
ifp->if_capenable = ifp->if_capabilities;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif
ifp->if_capenable = ifp->if_capabilities;
/* Do MII setup. */
if (mii_phy_probe(dev, &sc->vr_miibus,
@ -794,6 +794,11 @@ vr_detach(device_t dev)
KASSERT(mtx_initialized(&sc->vr_mtx), ("vr mutex not initialized"));
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
VR_LOCK(sc);
sc->suspended = 1;
@ -952,12 +957,12 @@ vr_rxeof(struct vr_softc *sc)
while (!((rxstat = sc->vr_cdata.vr_rx_head->vr_ptr->vr_status) &
VR_RXSTAT_OWN)) {
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
if (sc->rxcycles <= 0)
break;
sc->rxcycles--;
}
#endif /* DEVICE_POLLING */
#endif
m0 = NULL;
cur_rx = sc->vr_cdata.vr_rx_head;
sc->vr_cdata.vr_rx_head = cur_rx->vr_nextdesc;
@ -1151,7 +1156,8 @@ vr_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
struct vr_softc *sc = ifp->if_softc;
VR_LOCK(sc);
vr_poll_locked(ifp, cmd, count);
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
vr_poll_locked(ifp, cmd, count);
VR_UNLOCK(sc);
}
@ -1162,17 +1168,6 @@ vr_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count)
VR_LOCK_ASSERT(sc);
if (!(ifp->if_capenable & IFCAP_POLLING)) {
ether_poll_deregister(ifp);
cmd = POLL_DEREGISTER;
}
if (cmd == POLL_DEREGISTER) {
/* Final call, enable interrupts. */
CSR_WRITE_2(sc, VR_IMR, VR_INTRS);
return;
}
sc->rxcycles = count;
vr_rxeof(sc);
vr_txeof(sc);
@ -1249,17 +1244,9 @@ vr_intr(void *arg)
}
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
goto done_locked;
if ((ifp->if_capenable & IFCAP_POLLING) &&
ether_poll_register(vr_poll, ifp)) {
/* OK, disable interrupts. */
CSR_WRITE_2(sc, VR_IMR, 0x0000);
vr_poll_locked(ifp, 0, 1);
goto done_locked;
}
#endif /* DEVICE_POLLING */
#endif
/* Suppress unwanted interrupts. */
if (!(ifp->if_flags & IFF_UP)) {
@ -1534,10 +1521,10 @@ vr_init_locked(struct vr_softc *sc)
/*
* Disable interrupts if we are polling.
*/
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
CSR_WRITE_2(sc, VR_IMR, 0);
else
#endif /* DEVICE_POLLING */
#endif
/*
* Enable interrupts.
*/
@ -1615,7 +1602,31 @@ vr_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
break;
case SIOCSIFCAP:
ifp->if_capenable = ifr->ifr_reqcap;
#ifdef DEVICE_POLLING
if (ifr->ifr_reqcap & IFCAP_POLLING &&
!(ifp->if_capenable & IFCAP_POLLING)) {
error = ether_poll_register(vr_poll, ifp);
if (error)
return(error);
VR_LOCK(sc);
/* Disable interrupts */
CSR_WRITE_2(sc, VR_IMR, 0x0000);
ifp->if_capenable |= IFCAP_POLLING;
VR_UNLOCK(sc);
return (error);
}
if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
ifp->if_capenable & IFCAP_POLLING) {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
VR_LOCK(sc);
CSR_WRITE_2(sc, VR_IMR, VR_INTRS);
ifp->if_capenable &= ~IFCAP_POLLING;
VR_UNLOCK(sc);
return (error);
}
#endif /* DEVICE_POLLING */
break;
default:
error = ether_ioctl(ifp, command, data);
@ -1662,9 +1673,6 @@ vr_stop(struct vr_softc *sc)
untimeout(vr_tick, sc, sc->vr_stat_ch);
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
#ifdef DEVICE_POLLING
ether_poll_deregister(ifp);
#endif /* DEVICE_POLLING */
VR_SETBIT16(sc, VR_COMMAND, VR_CMD_STOP);
VR_CLRBIT16(sc, VR_COMMAND, (VR_CMD_RX_ON|VR_CMD_TX_ON));

10
sys/i386/i386/trap.c
View File

@ -160,11 +160,6 @@ SYSCTL_INT(_machdep, OID_AUTO, panic_on_nmi, CTLFLAG_RW,
extern char *syscallnames[];
#endif
#ifdef DEVICE_POLLING
extern u_int32_t poll_in_trap;
extern int ether_poll(int count);
#endif /* DEVICE_POLLING */
/*
* Exception, fault, and trap interface to the FreeBSD kernel.
* This common code is called from assembly language IDT gate entry
@ -272,11 +267,6 @@ trap(frame)
trap_fatal(&frame, eva);
}
#ifdef DEVICE_POLLING
if (poll_in_trap)
ether_poll(poll_in_trap);
#endif /* DEVICE_POLLING */
if ((ISPL(frame.tf_cs) == SEL_UPL) ||
((frame.tf_eflags & PSL_VM) &&
!(PCPU_GET(curpcb)->pcb_flags & PCB_VM86CALL))) {

188
sys/kern/kern_poll.c
View File

@ -32,6 +32,7 @@ __FBSDID("$FreeBSD$");
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/socket.h> /* needed by net/if.h */
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <sys/syslog.h>
@ -44,14 +45,15 @@ __FBSDID("$FreeBSD$");
static void netisr_poll(void); /* the two netisr handlers */
static void netisr_pollmore(void);
static int poll_switch(SYSCTL_HANDLER_ARGS);
void hardclock_device_poll(void); /* hook from hardclock */
void ether_poll(int); /* polling while in trap */
void ether_poll(int); /* polling in idle loop */
/*
* Polling support for [network] device drivers.
*
* Drivers which support this feature try to register with the
* Drivers which support this feature can register with the
* polling code.
*
* If registration is successful, the driver must disable interrupts,
@ -64,10 +66,6 @@ void ether_poll(int); /* polling while in trap */
* POLL_AND_CHECK_STATUS: as above, plus check status registers or do
* other more expensive operations. This command is issued periodically
* but less frequently than POLL_ONLY.
* POLL_DEREGISTER: deregister and return to interrupt mode.
*
* The first two commands are only issued if the interface is marked as
* 'IFF_UP and IFF_DRV_RUNNING', the last one only if IFF_DRV_RUNNING is set.
*
* The count limit specifies how much work the handler can do during the
* call -- typically this is the number of packets to be received, or
@ -75,11 +73,9 @@ void ether_poll(int); /* polling while in trap */
* as the max time spent in the function grows roughly linearly with the
* count).
*
* Deregistration can be requested by the driver itself (typically in the
* *_stop() routine), or by the polling code, by invoking the handler.
*
* Polling can be globally enabled or disabled with the sysctl variable
* kern.polling.enable (default is 0, disabled)
* Polling is enabled and disabled via setting IFCAP_POLLING flag on
* the interface. The driver ioctl handler should register interface
* with polling and disable interrupts, if registration was successful.
*
* A second variable controls the sharing of CPU between polling/kernel
* network processing, and other activities (typically userlevel tasks):
@ -91,7 +87,7 @@ void ether_poll(int); /* polling while in trap */
* The following constraints hold
*
* 1 <= poll_each_burst <= poll_burst <= poll_burst_max
* 0 <= poll_in_trap <= poll_each_burst
* 0 <= poll_each_burst
* MIN_POLL_BURST_MAX <= poll_burst_max <= MAX_POLL_BURST_MAX
*/
@ -117,10 +113,6 @@ static u_int32_t poll_in_idle_loop=0; /* do we poll in idle loop ? */
SYSCTL_UINT(_kern_polling, OID_AUTO, idle_poll, CTLFLAG_RW,
&poll_in_idle_loop, 0, "Enable device polling in idle loop");
u_int32_t poll_in_trap; /* used in trap.c */
SYSCTL_UINT(_kern_polling, OID_AUTO, poll_in_trap, CTLFLAG_RW,
&poll_in_trap, 0, "Poll burst size during a trap");
static u_int32_t user_frac = 50;
SYSCTL_UINT(_kern_polling, OID_AUTO, user_frac, CTLFLAG_RW,
&user_frac, 0, "Desired user fraction of cpu time");
@ -149,9 +141,9 @@ static u_int32_t poll_handlers; /* next free entry in pr[]. */
SYSCTL_UINT(_kern_polling, OID_AUTO, handlers, CTLFLAG_RD,
&poll_handlers, 0, "Number of registered poll handlers");
static int polling = 0; /* global polling enable */
SYSCTL_UINT(_kern_polling, OID_AUTO, enable, CTLFLAG_RW,
&polling, 0, "Polling enabled");
static int polling = 0;
SYSCTL_PROC(_kern_polling, OID_AUTO, enable, CTLTYPE_UINT | CTLFLAG_RW,
0, sizeof(int), poll_switch, "I", "Switch polling for all interfaces");
static u_int32_t phase;
SYSCTL_UINT(_kern_polling, OID_AUTO, phase, CTLFLAG_RW,
@ -174,23 +166,9 @@ SYSCTL_UINT(_kern_polling, OID_AUTO, idlepoll_sleeping, CTLFLAG_RD,
struct pollrec {
poll_handler_t *handler;
struct ifnet *ifp;
/*
* Flags of polling record (protected by poll_mtx).
* PRF_RUNNING means that the handler is now executing.
* PRF_LEAVING means that the handler is now deregistering.
*/
#define PRF_RUNNING 0x1
#define PRF_LEAVING 0x2
uint32_t flags;
};
static struct pollrec pr[POLL_LIST_LEN];
#define PR_VALID(i) (pr[(i)].handler != NULL && \
!(pr[(i)].flags & (PRF_RUNNING|PRF_LEAVING)) && \
(pr[(i)].ifp->if_drv_flags & IFF_DRV_RUNNING) &&\
(pr[(i)].ifp->if_flags & IFF_UP))
static struct mtx poll_mtx;
static void
@ -258,30 +236,24 @@ hardclock_device_poll(void)
}
/*
* ether_poll is called from the idle loop or from the trap handler.
* ether_poll is called from the idle loop.
*/
void
ether_poll(int count)
{
int i;
NET_LOCK_GIANT();
mtx_lock(&poll_mtx);
if (count > poll_each_burst)
count = poll_each_burst;
for (i = 0 ; i < poll_handlers ; i++) {
if (PR_VALID(i)) {
pr[i].flags |= PRF_RUNNING;
mtx_unlock(&poll_mtx);
NET_LOCK_GIANT();
pr[i].handler(pr[i].ifp, POLL_ONLY, count);
NET_UNLOCK_GIANT();
mtx_lock(&poll_mtx);
pr[i].flags &= ~PRF_RUNNING;
}
}
for (i = 0 ; i < poll_handlers ; i++)
pr[i].handler(pr[i].ifp, POLL_ONLY, count);
mtx_unlock(&poll_mtx);
NET_UNLOCK_GIANT();
}
/*
@ -403,60 +375,29 @@ netisr_poll(void)
residual_burst : poll_each_burst;
residual_burst -= cycles;
if (polling) {
for (i = 0 ; i < poll_handlers ; i++) {
if (PR_VALID(i)) {
pr[i].flags |= PRF_RUNNING;
mtx_unlock(&poll_mtx);
pr[i].handler(pr[i].ifp, arg, cycles);
mtx_lock(&poll_mtx);
pr[i].flags &= ~PRF_RUNNING;
}
}
} else { /* unregister */
for (i = 0 ; i < poll_handlers ; i++) {
if (pr[i].handler != NULL &&
pr[i].ifp->if_drv_flags & IFF_DRV_RUNNING) {
pr[i].ifp->if_flags &= ~IFF_POLLING;
pr[i].flags |= PRF_LEAVING;
mtx_unlock(&poll_mtx);
pr[i].handler(pr[i].ifp, POLL_DEREGISTER, 1);
mtx_lock(&poll_mtx);
pr[i].flags &= ~PRF_LEAVING;
}
pr[i].handler = NULL;
}
residual_burst = 0;
poll_handlers = 0;
}
for (i = 0 ; i < poll_handlers ; i++)
pr[i].handler(pr[i].ifp, arg, cycles);
phase = 4;
mtx_unlock(&poll_mtx);
}
/*
* Try to register routine for polling. Returns 1 if successful
* (and polling should be enabled), 0 otherwise.
* Try to register routine for polling. Returns 0 if successful
* (and polling should be enabled), error code otherwise.
* A device is not supposed to register itself multiple times.
*
* This is called from within the *_intr() functions, so we do not need
* further ifnet locking.
* This is called from within the *_ioctl() functions.
*/
int
ether_poll_register(poll_handler_t *h, struct ifnet *ifp)
{
int i;
NET_ASSERT_GIANT();
KASSERT(h != NULL, ("%s: handler is NULL", __func__));
KASSERT(ifp != NULL, ("%s: ifp is NULL", __func__));
if (polling == 0) /* polling disabled, cannot register */
return 0;
if (h == NULL || ifp == NULL) /* bad arguments */
return 0;
if ( !(ifp->if_flags & IFF_UP) ) /* must be up */
return 0;
if (ifp->if_flags & IFF_POLLING) /* already polling */
return 0;
NET_ASSERT_GIANT();
mtx_lock(&poll_mtx);
if (poll_handlers >= POLL_LIST_LEN) {
@ -474,7 +415,7 @@ ether_poll_register(poll_handler_t *h, struct ifnet *ifp)
verbose--;
}
mtx_unlock(&poll_mtx);
return 0; /* no polling for you */
return (ENOMEM); /* no polling for you */
}
for (i = 0 ; i < poll_handlers ; i++)
@ -482,45 +423,39 @@ ether_poll_register(poll_handler_t *h, struct ifnet *ifp)
mtx_unlock(&poll_mtx);
log(LOG_DEBUG, "ether_poll_register: %s: handler"
" already registered\n", ifp->if_xname);
return (0);
return (EEXIST);
}
pr[poll_handlers].handler = h;
pr[poll_handlers].ifp = ifp;
poll_handlers++;
ifp->if_flags |= IFF_POLLING;
mtx_unlock(&poll_mtx);
if (idlepoll_sleeping)
wakeup(&idlepoll_sleeping);
return 1; /* polling enabled in next call */
return (0);
}
/*
* Remove interface from the polling list. Normally called by *_stop().
* It is not an error to call it with IFF_POLLING clear, the call is
* sufficiently rare to be preferable to save the space for the extra
* test in each driver in exchange of one additional function call.
* Remove interface from the polling list. Called from *_ioctl(), too.
*/
int
ether_poll_deregister(struct ifnet *ifp)
{
int i;
NET_ASSERT_GIANT();
KASSERT(ifp != NULL, ("%s: ifp is NULL", __func__));
if ( !ifp || !(ifp->if_flags & IFF_POLLING) ) {
return 0;
}
NET_ASSERT_GIANT();
mtx_lock(&poll_mtx);
for (i = 0 ; i < poll_handlers ; i++)
if (pr[i].ifp == ifp) /* found it */
break;
ifp->if_flags &= ~IFF_POLLING; /* found or not... */
if (i == poll_handlers) {
mtx_unlock(&poll_mtx);
log(LOG_DEBUG, "ether_poll_deregister: %s: not found!\n",
ifp->if_xname);
return (0);
mtx_unlock(&poll_mtx);
return (ENOENT);
}
poll_handlers--;
if (i < poll_handlers) { /* Last entry replaces this one. */
@ -528,7 +463,60 @@ ether_poll_deregister(struct ifnet *ifp)
pr[i].ifp = pr[poll_handlers].ifp;
}
mtx_unlock(&poll_mtx);
return (1);
return (0);
}
/*
* Legacy interface for turning polling on all interfaces at one time.
*/
static int
poll_switch(SYSCTL_HANDLER_ARGS)
{
struct ifnet *ifp;
int error;
int val;
mtx_lock(&poll_mtx);
val = polling;
mtx_unlock(&poll_mtx);
error = sysctl_handle_int(oidp, &val, sizeof(int), req);
if (error || !req->newptr )
return (error);
if (val == polling)
return (0);
if (val < 0 || val > 1)
return (EINVAL);
mtx_lock(&poll_mtx);
polling = val;
mtx_unlock(&poll_mtx);
NET_LOCK_GIANT();
IFNET_RLOCK();
TAILQ_FOREACH(ifp, &ifnet, if_link) {
if (ifp->if_capabilities & IFCAP_POLLING) {
struct ifreq ifr;
if (val == 1)
ifr.ifr_reqcap =
ifp->if_capenable | IFCAP_POLLING;
else
ifr.ifr_reqcap =
ifp->if_capenable & ~IFCAP_POLLING;
IFF_LOCKGIANT(ifp); /* LOR here */
(void) (*ifp->if_ioctl)(ifp, SIOCSIFCAP, (caddr_t)&ifr);
IFF_UNLOCKGIANT(ifp);
}
}
IFNET_RUNLOCK();
NET_UNLOCK_GIANT();
log(LOG_ERR, "kern.polling.enable is deprecated. Use ifconfig(8)");
return (0);
}
static void

5
sys/net/if.h
View File

@ -148,7 +148,7 @@ struct if_data {
#define IFF_LINK2 0x4000 /* per link layer defined bit */
#define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */
#define IFF_MULTICAST 0x8000 /* (i) supports multicast */
#define IFF_POLLING 0x10000 /* (n) Interface is in polling mode. */
/* 0x10000 */
#define IFF_PPROMISC 0x20000 /* (n) user-requested promisc mode */
#define IFF_MONITOR 0x40000 /* (n) user-requested monitor mode */
#define IFF_STATICARP 0x80000 /* (n) static ARP */
@ -166,8 +166,7 @@ struct if_data {
/* flags set internally only: */
#define IFF_CANTCHANGE \
(IFF_BROADCAST|IFF_POINTOPOINT|IFF_DRV_RUNNING|IFF_DRV_OACTIVE|\
IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_SMART|IFF_PROMISC|\
IFF_POLLING)
IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_SMART|IFF_PROMISC)
/*
* Values for if_link_state.

2
sys/net/if_var.h
View File

@ -660,7 +660,7 @@ void if_deregister_com_alloc(u_char type);
LLADDR((struct sockaddr_dl *) ifaddr_byindex((ifp)->if_index)->ifa_addr)
#ifdef DEVICE_POLLING
enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS, POLL_DEREGISTER };
enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS };
typedef void poll_handler_t(struct ifnet *ifp, enum poll_cmd cmd, int count);
int ether_poll_register(poll_handler_t *h, struct ifnet *ifp);

69
sys/pci/if_dc.c
View File

@ -2265,10 +2265,10 @@ dc_attach(device_t dev)
*/
ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
ifp->if_capabilities |= IFCAP_VLAN_MTU;
ifp->if_capenable = ifp->if_capabilities;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif
ifp->if_capenable = ifp->if_capabilities;
callout_init_mtx(&sc->dc_stat_ch, &sc->dc_mtx, 0);
@ -2339,6 +2339,11 @@ dc_detach(device_t dev)
ifp = sc->dc_ifp;
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
/* These should only be active if attach succeeded */
if (device_is_attached(dev)) {
DC_LOCK(sc);
@ -2704,7 +2709,7 @@ dc_rxeof(struct dc_softc *sc)
while (!(le32toh(sc->dc_ldata->dc_rx_list[i].dc_status) &
DC_RXSTAT_OWN)) {
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
if (sc->rxcycles <= 0)
break;
sc->rxcycles--;
@ -3038,16 +3043,13 @@ dc_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
{
struct dc_softc *sc = ifp->if_softc;
if (!(ifp->if_capenable & IFCAP_POLLING)) {
ether_poll_deregister(ifp);
cmd = POLL_DEREGISTER;
}
if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */
/* Re-enable interrupts. */
CSR_WRITE_4(sc, DC_IMR, DC_INTRS);
DC_LOCK(sc);
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
DC_UNLOCK(sc);
return;
}
DC_LOCK(sc);
sc->rxcycles = count;
dc_rxeof(sc);
dc_txeof(sc);
@ -3111,12 +3113,9 @@ dc_intr(void *arg)
DC_LOCK(sc);
ifp = sc->dc_ifp;
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING)
goto done;
if ((ifp->if_capenable & IFCAP_POLLING) &&
ether_poll_register(dc_poll, ifp)) { /* ok, disable interrupts */
CSR_WRITE_4(sc, DC_IMR, 0x00000000);
goto done;
if (ifp->if_capenable & IFCAP_POLLING) {
DC_UNLOCK(sc);
return;
}
#endif
@ -3183,10 +3182,6 @@ dc_intr(void *arg)
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
dc_start_locked(ifp);
#ifdef DEVICE_POLLING
done:
#endif
DC_UNLOCK(sc);
}
@ -3534,7 +3529,7 @@ dc_init_locked(struct dc_softc *sc)
* the case of polling. Some cards (e.g. fxp) turn interrupts on
* after a reset.
*/
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
CSR_WRITE_4(sc, DC_IMR, 0x00000000);
else
#endif
@ -3686,10 +3681,31 @@ dc_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
#endif
break;
case SIOCSIFCAP:
DC_LOCK(sc);
ifp->if_capenable &= ~IFCAP_POLLING;
ifp->if_capenable |= ifr->ifr_reqcap & IFCAP_POLLING;
DC_UNLOCK(sc);
#ifdef DEVICE_POLLING
if (ifr->ifr_reqcap & IFCAP_POLLING &&
!(ifp->if_capenable & IFCAP_POLLING)) {
error = ether_poll_register(dc_poll, ifp);
if (error)
return(error);
DC_LOCK(sc);
/* Disable interrupts */
CSR_WRITE_4(sc, DC_IMR, 0x00000000);
ifp->if_capenable |= IFCAP_POLLING;
DC_UNLOCK(sc);
return (error);
}
if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
ifp->if_capenable & IFCAP_POLLING) {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
DC_LOCK(sc);
CSR_WRITE_4(sc, DC_IMR, DC_INTRS);
ifp->if_capenable &= ~IFCAP_POLLING;
DC_UNLOCK(sc);
return (error);
}
#endif /* DEVICE_POLLING */
break;
default:
error = ether_ioctl(ifp, command, data);
@ -3744,9 +3760,6 @@ dc_stop(struct dc_softc *sc)
callout_stop(&sc->dc_stat_ch);
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
#ifdef DEVICE_POLLING
ether_poll_deregister(ifp);
#endif
DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_RX_ON | DC_NETCFG_TX_ON));
CSR_WRITE_4(sc, DC_IMR, 0x00000000);

76
sys/pci/if_rl.c
View File

@ -195,10 +195,8 @@ static int rl_miibus_readreg(device_t, int, int);
static void rl_miibus_statchg(device_t);
static int rl_miibus_writereg(device_t, int, int, int);
#ifdef DEVICE_POLLING
static void rl_poll(struct ifnet *ifp, enum poll_cmd cmd,
int count);
static void rl_poll_locked(struct ifnet *ifp, enum poll_cmd cmd,
int count);
static void rl_poll(struct ifnet *ifp, enum poll_cmd cmd, int count);
static void rl_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count);
#endif
static int rl_probe(device_t);
static void rl_read_eeprom(struct rl_softc *, uint8_t *, int, int, int);
@ -956,10 +954,10 @@ rl_attach(device_t dev)
ifp->if_init = rl_init;
ifp->if_baudrate = 10000000;
ifp->if_capabilities = IFCAP_VLAN_MTU;
ifp->if_capenable = ifp->if_capabilities;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif
ifp->if_capenable = ifp->if_capabilities;
IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
IFQ_SET_READY(&ifp->if_snd);
@ -1002,6 +1000,10 @@ rl_detach(device_t dev)
KASSERT(mtx_initialized(&sc->rl_mtx), ("rl mutex not initialized"));
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
/* These should only be active if attach succeeded */
if (device_is_attached(dev)) {
RL_LOCK(sc);
@ -1115,12 +1117,12 @@ rl_rxeof(struct rl_softc *sc)
while((CSR_READ_1(sc, RL_COMMAND) & RL_CMD_EMPTY_RXBUF) == 0) {
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
if (sc->rxcycles <= 0)
break;
sc->rxcycles--;
}
#endif /* DEVICE_POLLING */
#endif
rxbufpos = sc->rl_cdata.rl_rx_buf + cur_rx;
rxstat = le32toh(*(uint32_t *)rxbufpos);
@ -1283,7 +1285,8 @@ rl_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
struct rl_softc *sc = ifp->if_softc;
RL_LOCK(sc);
rl_poll_locked(ifp, cmd, count);
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
rl_poll_locked(ifp, cmd, count);
RL_UNLOCK(sc);
}
@ -1294,17 +1297,6 @@ rl_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count)
RL_LOCK_ASSERT(sc);
if (!(ifp->if_capenable & IFCAP_POLLING)) {
ether_poll_deregister(ifp);
cmd = POLL_DEREGISTER;
}
if (cmd == POLL_DEREGISTER) {
/* Final call; enable interrupts. */
CSR_WRITE_2(sc, RL_IMR, RL_INTRS);
return;
}
sc->rxcycles = count;
rl_rxeof(sc);
rl_txeof(sc);
@ -1345,17 +1337,9 @@ rl_intr(void *arg)
goto done_locked;
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
goto done_locked;
if ((ifp->if_capenable & IFCAP_POLLING) &&
ether_poll_register(rl_poll, ifp)) {
/* Disable interrupts. */
CSR_WRITE_2(sc, RL_IMR, 0x0000);
rl_poll_locked(ifp, 0, 1);
goto done_locked;
}
#endif /* DEVICE_POLLING */
#endif
for (;;) {
status = CSR_READ_2(sc, RL_ISR);
@ -1574,10 +1558,10 @@ rl_init_locked(struct rl_softc *sc)
#ifdef DEVICE_POLLING
/* Disable interrupts if we are polling. */
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
CSR_WRITE_2(sc, RL_IMR, 0);
else
#endif /* DEVICE_POLLING */
#endif
/* Enable interrupts. */
CSR_WRITE_2(sc, RL_IMR, RL_INTRS);
@ -1669,8 +1653,31 @@ rl_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
break;
case SIOCSIFCAP:
ifp->if_capenable &= ~IFCAP_POLLING;
ifp->if_capenable |= ifr->ifr_reqcap & IFCAP_POLLING;
#ifdef DEVICE_POLLING
if (ifr->ifr_reqcap & IFCAP_POLLING &&
!(ifp->if_capenable & IFCAP_POLLING)) {
error = ether_poll_register(rl_poll, ifp);
if (error)
return(error);
RL_LOCK(sc);
/* Disable interrupts */
CSR_WRITE_2(sc, RL_IMR, 0x0000);
ifp->if_capenable |= IFCAP_POLLING;
RL_UNLOCK(sc);
return (error);
}
if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
ifp->if_capenable & IFCAP_POLLING) {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
RL_LOCK(sc);
CSR_WRITE_2(sc, RL_IMR, RL_INTRS);
ifp->if_capenable &= ~IFCAP_POLLING;
RL_UNLOCK(sc);
return (error);
}
#endif /* DEVICE_POLLING */
break;
default:
error = ether_ioctl(ifp, command, data);
@ -1712,9 +1719,6 @@ rl_stop(struct rl_softc *sc)
ifp->if_timer = 0;
callout_stop(&sc->rl_stat_callout);
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
#ifdef DEVICE_POLLING
ether_poll_deregister(ifp);
#endif /* DEVICE_POLLING */
CSR_WRITE_1(sc, RL_COMMAND, 0x00);
CSR_WRITE_2(sc, RL_IMR, 0x0000);

89
sys/pci/if_sf.c
View File

@ -165,11 +165,9 @@ static int sf_miibus_readreg(device_t, int, int);
static int sf_miibus_writereg(device_t, int, int, int);
static void sf_miibus_statchg(device_t);
#ifdef DEVICE_POLLING
static void sf_poll(struct ifnet *ifp, enum poll_cmd cmd,
int count);
static void sf_poll_locked(struct ifnet *ifp, enum poll_cmd cmd,
int count);
#endif /* DEVICE_POLLING */
static void sf_poll(struct ifnet *ifp, enum poll_cmd cmd, int count);
static void sf_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count);
#endif
static u_int32_t csr_read_4(struct sf_softc *, int);
static void csr_write_4(struct sf_softc *, int, u_int32_t);
@ -560,10 +558,31 @@ sf_ioctl(ifp, command, data)
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
break;
case SIOCSIFCAP:
SF_LOCK(sc);
ifp->if_capenable &= ~IFCAP_POLLING;
ifp->if_capenable |= ifr->ifr_reqcap & IFCAP_POLLING;
SF_UNLOCK(sc);
#ifdef DEVICE_POLLING
if (ifr->ifr_reqcap & IFCAP_POLLING &&
!(ifp->if_capenable & IFCAP_POLLING)) {
error = ether_poll_register(sf_poll, ifp);
if (error)
return(error);
SF_LOCK(sc);
/* Disable interrupts */
csr_write_4(sc, SF_IMR, 0x00000000);
ifp->if_capenable |= IFCAP_POLLING;
SF_UNLOCK(sc);
return (error);
}
if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
ifp->if_capenable & IFCAP_POLLING) {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
SF_LOCK(sc);
csr_write_4(sc, SF_IMR, SF_INTRS);
ifp->if_capenable &= ~IFCAP_POLLING;
SF_UNLOCK(sc);
return (error);
}
#endif /* DEVICE_POLLING */
break;
default:
error = ether_ioctl(ifp, command, data);
@ -749,10 +768,10 @@ sf_attach(dev)
IFQ_SET_MAXLEN(&ifp->if_snd, SF_TX_DLIST_CNT - 1);
ifp->if_snd.ifq_drv_maxlen = SF_TX_DLIST_CNT - 1;
IFQ_SET_READY(&ifp->if_snd);
ifp->if_capenable = ifp->if_capabilities;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif /* DEVICE_POLLING */
ifp->if_capenable = ifp->if_capabilities;
#endif
/*
* Call MI attach routine.
@ -794,6 +813,11 @@ sf_detach(dev)
KASSERT(mtx_initialized(&sc->sf_mtx), ("sf mutex not initialized"));
ifp = sc->sf_ifp;
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
/* These should only be active if attach succeeded */
if (device_is_attached(dev)) {
SF_LOCK(sc);
@ -946,12 +970,12 @@ sf_rxeof(sc)
struct mbuf *m0;
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
if (sc->rxcycles <= 0)
break;
sc->rxcycles--;
}
#endif /* DEVICE_POLLING */
#endif
cur_rx = &sc->sf_ldata->sf_rx_clist[cmpconsidx];
desc = &sc->sf_ldata->sf_rx_dlist_big[cur_rx->sf_endidx];
@ -1068,7 +1092,8 @@ sf_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
struct sf_softc *sc = ifp->if_softc;
SF_LOCK(sc);
sf_poll_locked(ifp, cmd, count);
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
sf_poll_locked(ifp, cmd, count);
SF_UNLOCK(sc);
}
@ -1079,17 +1104,6 @@ sf_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count)
SF_LOCK_ASSERT(sc);
if (!(ifp->if_capenable & IFCAP_POLLING)) {
ether_poll_deregister(ifp);
cmd = POLL_DEREGISTER;
}
if (cmd == POLL_DEREGISTER) {
/* Final call, enable interrupts. */
csr_write_4(sc, SF_IMR, SF_INTRS);
return;
}
sc->rxcycles = count;
sf_rxeof(sc);
sf_txeof(sc);
@ -1131,17 +1145,11 @@ sf_intr(arg)
ifp = sc->sf_ifp;
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING)
goto done_locked;
if ((ifp->if_capenable & IFCAP_POLLING) &&
ether_poll_register(sf_poll, ifp)) {
/* OK, disable interrupts. */
csr_write_4(sc, SF_IMR, 0x00000000);
sf_poll_locked(ifp, 0, 1);
goto done_locked;
if (ifp->if_capenable & IFCAP_POLLING) {
SF_UNLOCK(sc);
return;
}
#endif /* DEVICE_POLLING */
#endif
if (!(csr_read_4(sc, SF_ISR_SHADOW) & SF_ISR_PCIINT_ASSERTED)) {
SF_UNLOCK(sc);
@ -1185,9 +1193,6 @@ sf_intr(arg)
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
sf_start_locked(ifp);
#ifdef DEVICE_POLLING
done_locked:
#endif /* DEVICE_POLLING */
SF_UNLOCK(sc);
}
@ -1296,10 +1301,10 @@ sf_init_locked(sc)
#ifdef DEVICE_POLLING
/* Disable interrupts if we are polling. */
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
csr_write_4(sc, SF_IMR, 0x00000000);
else
#endif /* DEVICE_POLLING */
#endif
/* Enable interrupts. */
csr_write_4(sc, SF_IMR, SF_INTRS);
@ -1478,10 +1483,6 @@ sf_stop(sc)
callout_stop(&sc->sf_stat_callout);
#ifdef DEVICE_POLLING
ether_poll_deregister(ifp);
#endif /* DEVICE_POLLING */
csr_write_4(sc, SF_GEN_ETH_CTL, 0);
csr_write_4(sc, SF_CQ_CONSIDX, 0);
csr_write_4(sc, SF_CQ_PRODIDX, 0);

75
sys/pci/if_sis.c
View File

@ -1217,11 +1217,10 @@ sis_attach(device_t dev)
*/
ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
ifp->if_capabilities |= IFCAP_VLAN_MTU;
ifp->if_capenable = ifp->if_capabilities;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif
ifp->if_capenable = ifp->if_capabilities;
/* Hook interrupt last to avoid having to lock softc */
error = bus_setup_intr(dev, sc->sis_res[1], INTR_TYPE_NET | INTR_MPSAFE,
@ -1257,6 +1256,11 @@ sis_detach(device_t dev)
KASSERT(mtx_initialized(&sc->sis_mtx), ("sis mutex not initialized"));
ifp = sc->sis_ifp;
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
/* These should only be active if attach succeeded. */
if (device_is_attached(dev)) {
SIS_LOCK(sc);
@ -1404,12 +1408,12 @@ sis_rxeof(struct sis_softc *sc)
cur_rx = cur_rx->sis_nextdesc) {
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
if (sc->rxcycles <= 0)
break;
sc->rxcycles--;
}
#endif /* DEVICE_POLLING */
#endif
rxstat = cur_rx->sis_rxstat;
bus_dmamap_sync(sc->sis_tag,
cur_rx->sis_map, BUS_DMASYNC_POSTWRITE);
@ -1574,13 +1578,9 @@ sis_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
struct sis_softc *sc = ifp->if_softc;
SIS_LOCK(sc);
if (!(ifp->if_capenable & IFCAP_POLLING)) {
ether_poll_deregister(ifp);
cmd = POLL_DEREGISTER;
}
if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */
CSR_WRITE_4(sc, SIS_IER, 1);
goto done;
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
SIS_UNLOCK(sc);
return;
}
/*
@ -1613,7 +1613,7 @@ sis_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
sis_initl(sc);
}
}
done:
SIS_UNLOCK(sc);
}
#endif /* DEVICE_POLLING */
@ -1633,14 +1633,11 @@ sis_intr(void *arg)
SIS_LOCK(sc);
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING)
goto done;
if ((ifp->if_capenable & IFCAP_POLLING) &&
ether_poll_register(sis_poll, ifp)) { /* ok, disable interrupts */
CSR_WRITE_4(sc, SIS_IER, 0);
goto done;
if (ifp->if_capenable & IFCAP_POLLING) {
SIS_UNLOCK(sc);
return;
}
#endif /* DEVICE_POLLING */
#endif
/* Disable interrupts. */
CSR_WRITE_4(sc, SIS_IER, 0);
@ -1679,9 +1676,6 @@ sis_intr(void *arg)
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
sis_startl(ifp);
#ifdef DEVICE_POLLING
done:
#endif /* DEVICE_POLLING */
SIS_UNLOCK(sc);
}
@ -2033,10 +2027,10 @@ sis_initl(struct sis_softc *sc)
* ... only enable interrupts if we are not polling, make sure
* they are off otherwise.
*/
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
CSR_WRITE_4(sc, SIS_IER, 0);
else
#endif /* DEVICE_POLLING */
#endif
CSR_WRITE_4(sc, SIS_IER, 1);
/* Enable receiver and transmitter. */
@ -2133,10 +2127,32 @@ sis_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
break;
case SIOCSIFCAP:
SIS_LOCK(sc);
ifp->if_capenable &= ~IFCAP_POLLING;
ifp->if_capenable |= ifr->ifr_reqcap & IFCAP_POLLING;
SIS_UNLOCK(sc);
/* ok, disable interrupts */
#ifdef DEVICE_POLLING
if (ifr->ifr_reqcap & IFCAP_POLLING &&
!(ifp->if_capenable & IFCAP_POLLING)) {
error = ether_poll_register(sis_poll, ifp);
if (error)
return(error);
SIS_LOCK(sc);
/* Disable interrupts */
CSR_WRITE_4(sc, SIS_IER, 0);
ifp->if_capenable |= IFCAP_POLLING;
SIS_UNLOCK(sc);
return (error);
}
if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
ifp->if_capenable & IFCAP_POLLING) {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
SIS_LOCK(sc);
CSR_WRITE_4(sc, SIS_IER, 1);
ifp->if_capenable &= ~IFCAP_POLLING;
SIS_UNLOCK(sc);
return (error);
}
#endif /* DEVICE_POLLING */
break;
default:
error = ether_ioctl(ifp, command, data);
@ -2192,9 +2208,6 @@ sis_stop(struct sis_softc *sc)
callout_stop(&sc->sis_stat_ch);
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
#ifdef DEVICE_POLLING
ether_poll_deregister(ifp);
#endif
CSR_WRITE_4(sc, SIS_IER, 0);
CSR_WRITE_4(sc, SIS_IMR, 0);
CSR_READ_4(sc, SIS_ISR); /* clear any interrupts already pending */

73
sys/pci/if_ste.c
View File

@ -621,7 +621,8 @@ ste_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
struct ste_softc *sc = ifp->if_softc;
STE_LOCK(sc);
ste_poll_locked(ifp, cmd, count);
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
ste_poll_locked(ifp, cmd, count);
STE_UNLOCK(sc);
}
@ -631,14 +632,6 @@ ste_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count)
struct ste_softc *sc = ifp->if_softc;
STE_LOCK_ASSERT(sc);
if (!(ifp->if_capenable & IFCAP_POLLING)) {
ether_poll_deregister(ifp);
cmd = POLL_DEREGISTER;
}
if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */
CSR_WRITE_2(sc, STE_IMR, STE_INTRS);
return;
}
sc->rxcycles = count;
if (cmd == POLL_AND_CHECK_STATUS)
@ -685,15 +678,11 @@ ste_intr(xsc)
ifp = sc->ste_ifp;
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING)
goto done;
if ((ifp->if_capenable & IFCAP_POLLING) &&
ether_poll_register(ste_poll, ifp)) { /* ok, disable interrupts */
CSR_WRITE_2(sc, STE_IMR, 0);
ste_poll_locked(ifp, 0, 1);
goto done;
if (ifp->if_capenable & IFCAP_POLLING) {
STE_UNLOCK(sc);
return;
}
#endif /* DEVICE_POLLING */
#endif
/* See if this is really our interrupt. */
if (!(CSR_READ_2(sc, STE_ISR) & STE_ISR_INTLATCH)) {
@ -739,9 +728,6 @@ ste_intr(xsc)
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
ste_start_locked(ifp);
#ifdef DEVICE_POLLING
done:
#endif /* DEVICE_POLLING */
STE_UNLOCK(sc);
return;
@ -791,12 +777,12 @@ ste_rxeof(sc)
while((rxstat = sc->ste_cdata.ste_rx_head->ste_ptr->ste_status)
& STE_RXSTAT_DMADONE) {
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
if (sc->rxcycles <= 0)
break;
sc->rxcycles--;
}
#endif /* DEVICE_POLLING */
#endif
if ((STE_RX_LIST_CNT - count) < 3) {
break;
}
@ -1115,10 +1101,10 @@ ste_attach(dev)
*/
ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
ifp->if_capabilities |= IFCAP_VLAN_MTU;
ifp->if_capenable = ifp->if_capabilities;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif
ifp->if_capenable = ifp->if_capabilities;
/* Hook interrupt last to avoid having to lock softc */
error = bus_setup_intr(dev, sc->ste_irq, INTR_TYPE_NET | INTR_MPSAFE,
@ -1155,6 +1141,11 @@ ste_detach(dev)
KASSERT(mtx_initialized(&sc->ste_mtx), ("ste mutex not initialized"));
ifp = sc->ste_ifp;
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
/* These should only be active if attach succeeded */
if (device_is_attached(dev)) {
STE_LOCK(sc);
@ -1386,10 +1377,10 @@ ste_init_locked(sc)
CSR_WRITE_2(sc, STE_ISR, 0xFFFF);
#ifdef DEVICE_POLLING
/* Disable interrupts if we are polling. */
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
CSR_WRITE_2(sc, STE_IMR, 0);
else
#endif /* DEVICE_POLLING */
#endif
/* Enable interrupts. */
CSR_WRITE_2(sc, STE_IMR, STE_INTRS);
@ -1418,9 +1409,6 @@ ste_stop(sc)
callout_stop(&sc->ste_stat_callout);
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING|IFF_DRV_OACTIVE);
#ifdef DEVICE_POLLING
ether_poll_deregister(ifp);
#endif /* DEVICE_POLLING */
CSR_WRITE_2(sc, STE_IMR, 0);
STE_SETBIT2(sc, STE_MACCTL1, STE_MACCTL1_TX_DISABLE);
@ -1539,10 +1527,31 @@ ste_ioctl(ifp, command, data)
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
break;
case SIOCSIFCAP:
STE_LOCK(sc);
ifp->if_capenable &= ~IFCAP_POLLING;
ifp->if_capenable |= ifr->ifr_reqcap & IFCAP_POLLING;
STE_UNLOCK(sc);
#ifdef DEVICE_POLLING
if (ifr->ifr_reqcap & IFCAP_POLLING &&
!(ifp->if_capenable & IFCAP_POLLING)) {
error = ether_poll_register(ste_poll, ifp);
if (error)
return(error);
STE_LOCK(sc);
/* Disable interrupts */
CSR_WRITE_2(sc, STE_IMR, 0);
ifp->if_capenable |= IFCAP_POLLING;
STE_UNLOCK(sc);
return (error);
}
if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
ifp->if_capenable & IFCAP_POLLING) {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
STE_LOCK(sc);
CSR_WRITE_2(sc, STE_IMR, STE_INTRS);
ifp->if_capenable &= ~IFCAP_POLLING;
STE_UNLOCK(sc);
return (error);
}
#endif /* DEVICE_POLLING */
break;
default:
error = ether_ioctl(ifp, command, data);

70
sys/pci/if_vr.c
View File

@ -742,10 +742,10 @@ vr_attach(dev)
IFQ_SET_MAXLEN(&ifp->if_snd, VR_TX_LIST_CNT - 1);
ifp->if_snd.ifq_maxlen = VR_TX_LIST_CNT - 1;
IFQ_SET_READY(&ifp->if_snd);
ifp->if_capenable = ifp->if_capabilities;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif
ifp->if_capenable = ifp->if_capabilities;
/* Do MII setup. */
if (mii_phy_probe(dev, &sc->vr_miibus,
@ -794,6 +794,11 @@ vr_detach(device_t dev)
KASSERT(mtx_initialized(&sc->vr_mtx), ("vr mutex not initialized"));
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
VR_LOCK(sc);
sc->suspended = 1;
@ -952,12 +957,12 @@ vr_rxeof(struct vr_softc *sc)
while (!((rxstat = sc->vr_cdata.vr_rx_head->vr_ptr->vr_status) &
VR_RXSTAT_OWN)) {
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
if (sc->rxcycles <= 0)
break;
sc->rxcycles--;
}
#endif /* DEVICE_POLLING */
#endif
m0 = NULL;
cur_rx = sc->vr_cdata.vr_rx_head;
sc->vr_cdata.vr_rx_head = cur_rx->vr_nextdesc;
@ -1151,7 +1156,8 @@ vr_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
struct vr_softc *sc = ifp->if_softc;
VR_LOCK(sc);
vr_poll_locked(ifp, cmd, count);
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
vr_poll_locked(ifp, cmd, count);
VR_UNLOCK(sc);
}
@ -1162,17 +1168,6 @@ vr_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count)
VR_LOCK_ASSERT(sc);
if (!(ifp->if_capenable & IFCAP_POLLING)) {
ether_poll_deregister(ifp);
cmd = POLL_DEREGISTER;
}
if (cmd == POLL_DEREGISTER) {
/* Final call, enable interrupts. */
CSR_WRITE_2(sc, VR_IMR, VR_INTRS);
return;
}
sc->rxcycles = count;
vr_rxeof(sc);
vr_txeof(sc);
@ -1249,17 +1244,9 @@ vr_intr(void *arg)
}
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
goto done_locked;
if ((ifp->if_capenable & IFCAP_POLLING) &&
ether_poll_register(vr_poll, ifp)) {
/* OK, disable interrupts. */
CSR_WRITE_2(sc, VR_IMR, 0x0000);
vr_poll_locked(ifp, 0, 1);
goto done_locked;
}
#endif /* DEVICE_POLLING */
#endif
/* Suppress unwanted interrupts. */
if (!(ifp->if_flags & IFF_UP)) {
@ -1534,10 +1521,10 @@ vr_init_locked(struct vr_softc *sc)
/*
* Disable interrupts if we are polling.
*/
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
CSR_WRITE_2(sc, VR_IMR, 0);
else
#endif /* DEVICE_POLLING */
#endif
/*
* Enable interrupts.
*/
@ -1615,7 +1602,31 @@ vr_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
break;
case SIOCSIFCAP:
ifp->if_capenable = ifr->ifr_reqcap;
#ifdef DEVICE_POLLING
if (ifr->ifr_reqcap & IFCAP_POLLING &&
!(ifp->if_capenable & IFCAP_POLLING)) {
error = ether_poll_register(vr_poll, ifp);
if (error)
return(error);
VR_LOCK(sc);
/* Disable interrupts */
CSR_WRITE_2(sc, VR_IMR, 0x0000);
ifp->if_capenable |= IFCAP_POLLING;
VR_UNLOCK(sc);
return (error);
}
if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
ifp->if_capenable & IFCAP_POLLING) {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
VR_LOCK(sc);
CSR_WRITE_2(sc, VR_IMR, VR_INTRS);
ifp->if_capenable &= ~IFCAP_POLLING;
VR_UNLOCK(sc);
return (error);
}
#endif /* DEVICE_POLLING */
break;
default:
error = ether_ioctl(ifp, command, data);
@ -1662,9 +1673,6 @@ vr_stop(struct vr_softc *sc)
untimeout(vr_tick, sc, sc->vr_stat_ch);
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
#ifdef DEVICE_POLLING
ether_poll_deregister(ifp);
#endif /* DEVICE_POLLING */
VR_SETBIT16(sc, VR_COMMAND, VR_CMD_STOP);
VR_CLRBIT16(sc, VR_COMMAND, (VR_CMD_RX_ON|VR_CMD_TX_ON));

86
sys/pci/if_xl.c
View File

@ -249,7 +249,7 @@ static int xl_resume(device_t);
#ifdef DEVICE_POLLING
static void xl_poll(struct ifnet *ifp, enum poll_cmd cmd, int count);
static void xl_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count);
#endif /* DEVICE_POLLING */
#endif
static int xl_ifmedia_upd(struct ifnet *);
static void xl_ifmedia_sts(struct ifnet *, struct ifmediareq *);
@ -1487,9 +1487,10 @@ xl_attach(device_t dev)
ifp->if_capabilities |= IFCAP_HWCSUM;
#endif
}
ifp->if_capenable = ifp->if_capabilities;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif /* DEVICE_POLLING */
#endif
ifp->if_start = xl_start;
ifp->if_watchdog = xl_watchdog;
ifp->if_init = xl_init;
@ -1497,7 +1498,6 @@ xl_attach(device_t dev)
IFQ_SET_MAXLEN(&ifp->if_snd, XL_TX_LIST_CNT - 1);
ifp->if_snd.ifq_drv_maxlen = XL_TX_LIST_CNT - 1;
IFQ_SET_READY(&ifp->if_snd);
ifp->if_capenable = ifp->if_capabilities;
/*
* Now we have to see what sort of media we have.
@ -1690,6 +1690,11 @@ xl_detach(device_t dev)
KASSERT(mtx_initialized(&sc->xl_mtx), ("xl mutex not initialized"));
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
if (sc->xl_flags & XL_FLAG_USE_MMIO) {
rid = XL_PCI_LOMEM;
res = SYS_RES_MEMORY;
@ -1960,12 +1965,12 @@ xl_rxeof(struct xl_softc *sc)
BUS_DMASYNC_POSTREAD);
while ((rxstat = le32toh(sc->xl_cdata.xl_rx_head->xl_ptr->xl_status))) {
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
if (sc->rxcycles <= 0)
break;
sc->rxcycles--;
}
#endif /* DEVICE_POLLING */
#endif
cur_rx = sc->xl_cdata.xl_rx_head;
sc->xl_cdata.xl_rx_head = cur_rx->xl_next;
total_len = rxstat & XL_RXSTAT_LENMASK;
@ -2275,24 +2280,11 @@ xl_intr(void *arg)
XL_LOCK(sc);
#ifdef DEVICE_POLLING
if (ifp->if_flags & IFF_POLLING) {
if (ifp->if_capenable & IFCAP_POLLING) {
XL_UNLOCK(sc);
return;
}
if ((ifp->if_capenable & IFCAP_POLLING) &&
ether_poll_register(xl_poll, ifp)) {
/* Disable interrupts. */
CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB|0);
CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ACK|0xFF);
if (sc->xl_flags & XL_FLAG_FUNCREG)
bus_space_write_4(sc->xl_ftag, sc->xl_fhandle,
4, 0x8000);
xl_poll_locked(ifp, 0, 1);
XL_UNLOCK(sc);
return;
}
#endif /* DEVICE_POLLING */
#endif
while ((status = CSR_READ_2(sc, XL_STATUS)) & XL_INTRS &&
status != 0xFFFF) {
@ -2351,7 +2343,8 @@ xl_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
struct xl_softc *sc = ifp->if_softc;
XL_LOCK(sc);
xl_poll_locked(ifp, cmd, count);
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
xl_poll_locked(ifp, cmd, count);
XL_UNLOCK(sc);
}
@ -2362,21 +2355,6 @@ xl_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count)
XL_LOCK_ASSERT(sc);
if (!(ifp->if_capenable & IFCAP_POLLING)) {
ether_poll_deregister(ifp);
cmd = POLL_DEREGISTER;
}
if (cmd == POLL_DEREGISTER) {
/* Final call; enable interrupts. */
CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ACK|0xFF);
CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB|XL_INTRS);
if (sc->xl_flags & XL_FLAG_FUNCREG)
bus_space_write_4(sc->xl_ftag, sc->xl_fhandle,
4, 0x8000);
return;
}
sc->rxcycles = count;
xl_rxeof(sc);
if (sc->xl_type == XL_TYPE_905B)
@ -2989,10 +2967,10 @@ xl_init_locked(struct xl_softc *sc)
CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_STAT_ENB|XL_INTRS);
#ifdef DEVICE_POLLING
/* Disable interrupts if we are polling. */
if (ifp->if_flags & IFF_POLLING)
if (ifp->if_capenable & IFCAP_POLLING)
CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB|0);
else
#endif /* DEVICE_POLLING */
#endif
CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB|XL_INTRS);
if (sc->xl_flags & XL_FLAG_FUNCREG)
bus_space_write_4(sc->xl_ftag, sc->xl_fhandle, 4, 0x8000);
@ -3204,6 +3182,35 @@ xl_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
&mii->mii_media, command);
break;
case SIOCSIFCAP:
#ifdef DEVICE_POLLING
if (ifr->ifr_reqcap & IFCAP_POLLING &&
!(ifp->if_capenable & IFCAP_POLLING)) {
error = ether_poll_register(xl_poll, ifp);
if (error)
return(error);
XL_LOCK(sc);
/* Disable interrupts */
CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB|0);
ifp->if_capenable |= IFCAP_POLLING;
XL_UNLOCK(sc);
return (error);
}
if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
ifp->if_capenable & IFCAP_POLLING) {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
XL_LOCK(sc);
CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ACK|0xFF);
CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB|XL_INTRS);
if (sc->xl_flags & XL_FLAG_FUNCREG)
bus_space_write_4(sc->xl_ftag, sc->xl_fhandle,
4, 0x8000);
ifp->if_capenable &= ~IFCAP_POLLING;
XL_UNLOCK(sc);
return (error);
}
#endif /* DEVICE_POLLING */
XL_LOCK(sc);
ifp->if_capenable = ifr->ifr_reqcap;
if (ifp->if_capenable & IFCAP_TXCSUM)
@ -3268,9 +3275,6 @@ xl_stop(struct xl_softc *sc)
XL_LOCK_ASSERT(sc);
ifp->if_timer = 0;
#ifdef DEVICE_POLLING
ether_poll_deregister(ifp);
#endif /* DEVICE_POLLING */
CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_DISABLE);
CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_STATS_DISABLE);