freebsd-dev/sys/mips/cavium/octe/octe.c
Gleb Smirnoff 1bffa9511f Use define from if_var.h to access a field inside struct if_data,
that resides in struct ifnet.

Sponsored by:	Nginx, Inc.
2014-08-30 19:55:54 +00:00

492 lines
11 KiB
C

/*-
* Copyright (c) 2010 Juli Mallett <jmallett@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* Cavium Octeon Ethernet devices.
*
* XXX This file should be moved to if_octe.c
* XXX The driver may have sufficient locking but we need locking to protect
* the interfaces presented here, right?
*/
#include "opt_inet.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/lock.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/rman.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <net/bpf.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <net/if_var.h>
#include <net/if_vlan_var.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include "wrapper-cvmx-includes.h"
#include "cavium-ethernet.h"
#include "ethernet-common.h"
#include "ethernet-defines.h"
#include "ethernet-mdio.h"
#include "ethernet-tx.h"
#include "miibus_if.h"
#define OCTE_TX_LOCK(priv) mtx_lock(&(priv)->tx_mtx)
#define OCTE_TX_UNLOCK(priv) mtx_unlock(&(priv)->tx_mtx)
static int octe_probe(device_t);
static int octe_attach(device_t);
static int octe_detach(device_t);
static int octe_shutdown(device_t);
static int octe_miibus_readreg(device_t, int, int);
static int octe_miibus_writereg(device_t, int, int, int);
static void octe_init(void *);
static void octe_stop(void *);
static int octe_transmit(struct ifnet *, struct mbuf *);
static int octe_mii_medchange(struct ifnet *);
static void octe_mii_medstat(struct ifnet *, struct ifmediareq *);
static int octe_medchange(struct ifnet *);
static void octe_medstat(struct ifnet *, struct ifmediareq *);
static int octe_ioctl(struct ifnet *, u_long, caddr_t);
static device_method_t octe_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, octe_probe),
DEVMETHOD(device_attach, octe_attach),
DEVMETHOD(device_detach, octe_detach),
DEVMETHOD(device_shutdown, octe_shutdown),
/* MII interface */
DEVMETHOD(miibus_readreg, octe_miibus_readreg),
DEVMETHOD(miibus_writereg, octe_miibus_writereg),
{ 0, 0 }
};
static driver_t octe_driver = {
"octe",
octe_methods,
sizeof (cvm_oct_private_t),
};
static devclass_t octe_devclass;
DRIVER_MODULE(octe, octebus, octe_driver, octe_devclass, 0, 0);
DRIVER_MODULE(miibus, octe, miibus_driver, miibus_devclass, 0, 0);
static int
octe_probe(device_t dev)
{
return (0);
}
static int
octe_attach(device_t dev)
{
struct ifnet *ifp;
cvm_oct_private_t *priv;
device_t child;
unsigned qos;
int error;
priv = device_get_softc(dev);
ifp = priv->ifp;
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
if (priv->phy_id != -1) {
if (priv->phy_device == NULL) {
error = mii_attach(dev, &priv->miibus, ifp,
octe_mii_medchange, octe_mii_medstat,
BMSR_DEFCAPMASK, priv->phy_id, MII_OFFSET_ANY, 0);
if (error != 0)
device_printf(dev, "attaching PHYs failed\n");
} else {
child = device_add_child(dev, priv->phy_device, -1);
if (child == NULL)
device_printf(dev, "missing phy %u device %s\n", priv->phy_id, priv->phy_device);
}
}
if (priv->miibus == NULL) {
ifmedia_init(&priv->media, 0, octe_medchange, octe_medstat);
ifmedia_add(&priv->media, IFM_ETHER | IFM_AUTO, 0, NULL);
ifmedia_set(&priv->media, IFM_ETHER | IFM_AUTO);
}
/*
* XXX
* We don't support programming the multicast filter right now, although it
* ought to be easy enough. (Presumably it's just a matter of putting
* multicast addresses in the CAM?)
*/
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST | IFF_ALLMULTI;
ifp->if_init = octe_init;
ifp->if_ioctl = octe_ioctl;
priv->if_flags = ifp->if_flags;
mtx_init(&priv->tx_mtx, ifp->if_xname, "octe tx send queue", MTX_DEF);
for (qos = 0; qos < 16; qos++) {
mtx_init(&priv->tx_free_queue[qos].ifq_mtx, ifp->if_xname, "octe tx free queue", MTX_DEF);
IFQ_SET_MAXLEN(&priv->tx_free_queue[qos], MAX_OUT_QUEUE_DEPTH);
}
ether_ifattach(ifp, priv->mac);
ifp->if_transmit = octe_transmit;
ifp->if_hdrlen = sizeof(struct ether_vlan_header);
ifp->if_capabilities = IFCAP_VLAN_MTU | IFCAP_HWCSUM;
ifp->if_capenable = ifp->if_capabilities;
ifp->if_hwassist = CSUM_TCP | CSUM_UDP;
OCTE_TX_LOCK(priv);
IFQ_SET_MAXLEN(&ifp->if_snd, MAX_OUT_QUEUE_DEPTH);
ifp->if_snd.ifq_drv_maxlen = MAX_OUT_QUEUE_DEPTH;
IFQ_SET_READY(&ifp->if_snd);
OCTE_TX_UNLOCK(priv);
return (bus_generic_attach(dev));
}
static int
octe_detach(device_t dev)
{
return (0);
}
static int
octe_shutdown(device_t dev)
{
return (octe_detach(dev));
}
static int
octe_miibus_readreg(device_t dev, int phy, int reg)
{
cvm_oct_private_t *priv;
priv = device_get_softc(dev);
/*
* Try interface-specific MII routine.
*/
if (priv->mdio_read != NULL)
return (priv->mdio_read(priv->ifp, phy, reg));
/*
* Try generic MII routine.
*/
KASSERT(phy == priv->phy_id,
("read from phy %u but our phy is %u", phy, priv->phy_id));
return (cvm_oct_mdio_read(priv->ifp, phy, reg));
}
static int
octe_miibus_writereg(device_t dev, int phy, int reg, int val)
{
cvm_oct_private_t *priv;
priv = device_get_softc(dev);
/*
* Try interface-specific MII routine.
*/
if (priv->mdio_write != NULL) {
priv->mdio_write(priv->ifp, phy, reg, val);
return (0);
}
/*
* Try generic MII routine.
*/
KASSERT(phy == priv->phy_id,
("write to phy %u but our phy is %u", phy, priv->phy_id));
cvm_oct_mdio_write(priv->ifp, phy, reg, val);
return (0);
}
static void
octe_init(void *arg)
{
struct ifnet *ifp;
cvm_oct_private_t *priv;
priv = arg;
ifp = priv->ifp;
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
octe_stop(priv);
if (priv->open != NULL)
priv->open(ifp);
if (((ifp->if_flags ^ priv->if_flags) & (IFF_ALLMULTI | IFF_MULTICAST | IFF_PROMISC)) != 0)
cvm_oct_common_set_multicast_list(ifp);
cvm_oct_common_set_mac_address(ifp, IF_LLADDR(ifp));
cvm_oct_common_poll(ifp);
if (priv->miibus != NULL)
mii_mediachg(device_get_softc(priv->miibus));
ifp->if_drv_flags |= IFF_DRV_RUNNING;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
}
static void
octe_stop(void *arg)
{
struct ifnet *ifp;
cvm_oct_private_t *priv;
priv = arg;
ifp = priv->ifp;
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
return;
if (priv->stop != NULL)
priv->stop(ifp);
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
}
static int
octe_transmit(struct ifnet *ifp, struct mbuf *m)
{
cvm_oct_private_t *priv;
priv = ifp->if_softc;
if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
IFF_DRV_RUNNING) {
m_freem(m);
return (0);
}
return (cvm_oct_xmit(m, ifp));
}
static int
octe_mii_medchange(struct ifnet *ifp)
{
cvm_oct_private_t *priv;
struct mii_data *mii;
struct mii_softc *miisc;
priv = ifp->if_softc;
mii = device_get_softc(priv->miibus);
LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
PHY_RESET(miisc);
mii_mediachg(mii);
return (0);
}
static void
octe_mii_medstat(struct ifnet *ifp, struct ifmediareq *ifm)
{
cvm_oct_private_t *priv;
struct mii_data *mii;
priv = ifp->if_softc;
mii = device_get_softc(priv->miibus);
mii_pollstat(mii);
ifm->ifm_active = mii->mii_media_active;
ifm->ifm_status = mii->mii_media_status;
}
static int
octe_medchange(struct ifnet *ifp)
{
return (ENOTSUP);
}
static void
octe_medstat(struct ifnet *ifp, struct ifmediareq *ifm)
{
cvm_oct_private_t *priv;
cvmx_helper_link_info_t link_info;
priv = ifp->if_softc;
ifm->ifm_status = IFM_AVALID;
ifm->ifm_active = IFT_ETHER;
if (priv->poll == NULL)
return;
priv->poll(ifp);
link_info.u64 = priv->link_info;
if (!link_info.s.link_up)
return;
ifm->ifm_status |= IFM_ACTIVE;
switch (link_info.s.speed) {
case 10:
ifm->ifm_active |= IFM_10_T;
break;
case 100:
ifm->ifm_active |= IFM_100_TX;
break;
case 1000:
ifm->ifm_active |= IFM_1000_T;
break;
case 10000:
ifm->ifm_active |= IFM_10G_T;
break;
}
if (link_info.s.full_duplex)
ifm->ifm_active |= IFM_FDX;
else
ifm->ifm_active |= IFM_HDX;
}
static int
octe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
{
cvm_oct_private_t *priv;
struct mii_data *mii;
struct ifreq *ifr;
#ifdef INET
struct ifaddr *ifa;
#endif
int error;
priv = ifp->if_softc;
ifr = (struct ifreq *)data;
#ifdef INET
ifa = (struct ifaddr *)data;
#endif
switch (cmd) {
case SIOCSIFADDR:
#ifdef INET
/*
* Avoid reinitialization unless it's necessary.
*/
if (ifa->ifa_addr->sa_family == AF_INET) {
ifp->if_flags |= IFF_UP;
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
octe_init(priv);
arp_ifinit(ifp, ifa);
return (0);
}
#endif
error = ether_ioctl(ifp, cmd, data);
if (error != 0)
return (error);
return (0);
case SIOCSIFFLAGS:
if (ifp->if_flags == priv->if_flags)
return (0);
if ((ifp->if_flags & IFF_UP) != 0) {
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
octe_init(priv);
} else {
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
octe_stop(priv);
}
priv->if_flags = ifp->if_flags;
return (0);
case SIOCSIFCAP:
/*
* Just change the capabilities in software, currently none
* require reprogramming hardware, they just toggle whether we
* make use of already-present facilities in software.
*/
ifp->if_capenable = ifr->ifr_reqcap;
return (0);
case SIOCSIFMTU:
error = cvm_oct_common_change_mtu(ifp, ifr->ifr_mtu);
if (error != 0)
return (EINVAL);
return (0);
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
if (priv->miibus != NULL) {
mii = device_get_softc(priv->miibus);
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd);
if (error != 0)
return (error);
return (0);
}
error = ifmedia_ioctl(ifp, ifr, &priv->media, cmd);
if (error != 0)
return (error);
return (0);
default:
error = ether_ioctl(ifp, cmd, data);
if (error != 0)
return (error);
return (0);
}
}