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freebsd-nq/sys/dev/mii/rlswitch.c
Marius Strobl 3fcb7a5365 - Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP 
(reporting IFM_LOOP based on BMCR_LOOP is left in place though as
  it might provide useful for debugging). For most mii(4) drivers it
  was unclear whether the PHYs driven by them actually support
  loopback or not. Moreover, typically loopback mode also needs to
  be activated on the MAC, which none of the Ethernet drivers using
  mii(4) implements. Given that loopback media has no real use (and
  obviously hardly had a chance to actually work) besides for driver
  development (which just loopback mode should be sufficient for
  though, i.e one doesn't necessary need support for loopback media)
  support for it is just dropped as both NetBSD and OpenBSD already
  did quite some time ago.
- Let mii_phy_add_media() also announce the support of IFM_NONE.
- Restructure the PHY entry points to use a structure of entry points
  instead of discrete function pointers, and extend this to include
  a "reset" entry point. Make sure any PHY-specific reset routine is
  always used, and provide one for lxtphy(4) which disables MII
  interrupts (as is done for a few other PHYs we have drivers for).
  This includes changing NIC drivers which previously just called the
  generic mii_phy_reset() to now actually call the PHY-specific reset
  routine, which might be crucial in some cases. While at it, the
  redundant checks in these NIC drivers for mii->mii_instance not being
  zero before calling the reset routines were removed because as soon
  as one PHY driver attaches mii->mii_instance is incremented and we
  hardly can end up in their media change callbacks etc if no PHY driver
  has attached as mii_attach() would have failed in that case and not
  attach a miibus(4) instance.
  Consequently, NIC drivers now no longer should call mii_phy_reset()
  directly, so it was removed from EXPORT_SYMS.
- Add a mii_phy_dev_attach() as a companion helper to mii_phy_dev_probe().
  The purpose of that function is to perform the common steps to attach
  a PHY driver instance and to hook it up to the miibus(4) instance and to
  optionally also handle the probing, addition and initialization of the
  supported media. So all a PHY driver without any special requirements
  has to do in its bus attach method is to call mii_phy_dev_attach()
  along with PHY-specific MIIF_* flags, a pointer to its PHY functions
  and the add_media set to one. All PHY drivers were updated to take
  advantage of mii_phy_dev_attach() as appropriate. Along with these
  changes the capability mask was added to the mii_softc structure so
  PHY drivers taking advantage of mii_phy_dev_attach() but still
  handling media on their own do not need to fiddle with the MII attach
  arguments anyway.
- Keep track of the PHY offset in the mii_softc structure. This is done
  for compatibility with NetBSD/OpenBSD.
- Keep track of the PHY's OUI, model and revision in the mii_softc
  structure. Several PHY drivers require this information also after
  attaching and previously had to wrap their own softc around mii_softc.
  NetBSD/OpenBSD also keep track of the model and revision on their
  mii_softc structure. All PHY drivers were updated to take advantage
  as appropriate.
- Convert the mebers of the MII data structure to unsigned where
  appropriate. This is partly inspired by NetBSD/OpenBSD.
- According to IEEE 802.3-2002 the bits actually have to be reversed
  when mapping an OUI to the MII ID registers. All PHY drivers and
  miidevs where changed as necessary. Actually this now again allows to
  largely share miidevs with NetBSD, which fixed this problem already
  9 years ago. Consequently miidevs was synced as far as possible.
- Add MIIF_NOMANPAUSE and mii_phy_flowstatus() calls to drivers that
  weren't explicitly converted to support flow control before. It's
  unclear whether flow control actually works with these but typically
  it should and their net behavior should be more correct with these
  changes in place than without if the MAC driver sets MIIF_DOPAUSE.

Obtained from:	NetBSD (partially)
Reviewed by:	yongari (earlier version), silence on arch@ and net@
2011-05-03 19:51:29 +00:00

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/*-
* Copyright (c) 1997, 1998, 1999
* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
* Copyright (c) 2006 Bernd Walter. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* driver for RealTek 8305 pseudo PHYs
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/socket.h>
#include <sys/bus.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/if_media.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include "miidevs.h"
#include <machine/bus.h>
#include <pci/if_rlreg.h>
#include "miibus_if.h"
//#define RL_DEBUG
#define RL_VLAN
static int rlswitch_probe(device_t);
static int rlswitch_attach(device_t);
static device_method_t rlswitch_methods[] = {
/* device interface */
DEVMETHOD(device_probe, rlswitch_probe),
DEVMETHOD(device_attach, rlswitch_attach),
DEVMETHOD(device_detach, mii_phy_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
{ 0, 0 }
};
static devclass_t rlswitch_devclass;
static driver_t rlswitch_driver = {
"rlswitch",
rlswitch_methods,
sizeof(struct mii_softc)
};
DRIVER_MODULE(rlswitch, miibus, rlswitch_driver, rlswitch_devclass, 0, 0);
static int rlswitch_service(struct mii_softc *, struct mii_data *, int);
static void rlswitch_status(struct mii_softc *);
#ifdef RL_DEBUG
static void rlswitch_phydump(device_t dev);
#endif
static const struct mii_phydesc rlswitches[] = {
MII_PHY_DESC(REALTEK, RTL8305SC),
MII_PHY_END
};
static const struct mii_phy_funcs rlswitch_funcs = {
rlswitch_service,
rlswitch_status,
mii_phy_reset
};
static int
rlswitch_probe(device_t dev)
{
int rv;
rv = mii_phy_dev_probe(dev, rlswitches, BUS_PROBE_DEFAULT);
if (rv <= 0)
return (rv);
return (ENXIO);
}
static int
rlswitch_attach(device_t dev)
{
struct mii_softc *sc;
sc = device_get_softc(dev);
/*
* We handle all pseudo PHYs in a single instance.
*/
mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
&rlswitch_funcs, 0);
sc->mii_capabilities = BMSR_100TXFDX & sc->mii_capmask;
device_printf(dev, " ");
mii_phy_add_media(sc);
printf("\n");
#ifdef RL_DEBUG
rlswitch_phydump(dev);
#endif
#ifdef RL_VLAN
int val;
/* Global Control 0 */
val = 0;
val |= 0 << 10; /* enable 802.1q VLAN Tag support */
val |= 0 << 9; /* enable VLAN ingress filtering */
val |= 1 << 8; /* disable VLAN tag admit control */
val |= 1 << 6; /* internal use */
val |= 1 << 5; /* internal use */
val |= 1 << 4; /* internal use */
val |= 1 << 3; /* internal use */
val |= 1 << 1; /* reserved */
MIIBUS_WRITEREG(sc->mii_dev, 0, 16, val);
/* Global Control 2 */
val = 0;
val |= 1 << 15; /* reserved */
val |= 0 << 14; /* enable 1552 Bytes support */
val |= 1 << 13; /* enable broadcast input drop */
val |= 1 << 12; /* forward reserved control frames */
val |= 1 << 11; /* disable forwarding unicast frames to other VLAN's */
val |= 1 << 10; /* disable forwarding ARP broadcasts to other VLAN's */
val |= 1 << 9; /* enable 48 pass 1 */
val |= 0 << 8; /* enable VLAN */
val |= 1 << 7; /* reserved */
val |= 1 << 6; /* enable defer */
val |= 1 << 5; /* 43ms LED blink time */
val |= 3 << 3; /* 16:1 queue weight */
val |= 1 << 2; /* disable broadcast storm control */
val |= 1 << 1; /* enable power-on LED blinking */
val |= 1 << 0; /* reserved */
MIIBUS_WRITEREG(sc->mii_dev, 0, 18, val);
/* Port 0 Control Register 0 */
val = 0;
val |= 1 << 15; /* reserved */
val |= 1 << 11; /* drop received packets with wrong VLAN tag */
val |= 1 << 10; /* disable 802.1p priority classification */
val |= 1 << 9; /* disable diffserv priority classification */
val |= 1 << 6; /* internal use */
val |= 3 << 4; /* internal use */
val |= 1 << 3; /* internal use */
val |= 1 << 2; /* internal use */
val |= 1 << 0; /* remove VLAN tags on output */
MIIBUS_WRITEREG(sc->mii_dev, 0, 22, val);
/* Port 1 Control Register 0 */
val = 0;
val |= 1 << 15; /* reserved */
val |= 1 << 11; /* drop received packets with wrong VLAN tag */
val |= 1 << 10; /* disable 802.1p priority classification */
val |= 1 << 9; /* disable diffserv priority classification */
val |= 1 << 6; /* internal use */
val |= 3 << 4; /* internal use */
val |= 1 << 3; /* internal use */
val |= 1 << 2; /* internal use */
val |= 1 << 0; /* remove VLAN tags on output */
MIIBUS_WRITEREG(sc->mii_dev, 1, 22, val);
/* Port 2 Control Register 0 */
val = 0;
val |= 1 << 15; /* reserved */
val |= 1 << 11; /* drop received packets with wrong VLAN tag */
val |= 1 << 10; /* disable 802.1p priority classification */
val |= 1 << 9; /* disable diffserv priority classification */
val |= 1 << 6; /* internal use */
val |= 3 << 4; /* internal use */
val |= 1 << 3; /* internal use */
val |= 1 << 2; /* internal use */
val |= 1 << 0; /* remove VLAN tags on output */
MIIBUS_WRITEREG(sc->mii_dev, 2, 22, val);
/* Port 3 Control Register 0 */
val = 0;
val |= 1 << 15; /* reserved */
val |= 1 << 11; /* drop received packets with wrong VLAN tag */
val |= 1 << 10; /* disable 802.1p priority classification */
val |= 1 << 9; /* disable diffserv priority classification */
val |= 1 << 6; /* internal use */
val |= 3 << 4; /* internal use */
val |= 1 << 3; /* internal use */
val |= 1 << 2; /* internal use */
val |= 1 << 0; /* remove VLAN tags on output */
MIIBUS_WRITEREG(sc->mii_dev, 3, 22, val);
/* Port 4 (system port) Control Register 0 */
val = 0;
val |= 1 << 15; /* reserved */
val |= 0 << 11; /* don't drop received packets with wrong VLAN tag */
val |= 1 << 10; /* disable 802.1p priority classification */
val |= 1 << 9; /* disable diffserv priority classification */
val |= 1 << 6; /* internal use */
val |= 3 << 4; /* internal use */
val |= 1 << 3; /* internal use */
val |= 1 << 2; /* internal use */
val |= 2 << 0; /* add VLAN tags for untagged packets on output */
MIIBUS_WRITEREG(sc->mii_dev, 4, 22, val);
/* Port 0 Control Register 1 and VLAN A */
val = 0;
val |= 0x0 << 12; /* Port 0 VLAN Index */
val |= 1 << 11; /* internal use */
val |= 1 << 10; /* internal use */
val |= 1 << 9; /* internal use */
val |= 1 << 7; /* internal use */
val |= 1 << 6; /* internal use */
val |= 0x11 << 0; /* VLAN A membership */
MIIBUS_WRITEREG(sc->mii_dev, 0, 24, val);
/* Port 0 Control Register 2 and VLAN A */
val = 0;
val |= 1 << 15; /* internal use */
val |= 1 << 14; /* internal use */
val |= 1 << 13; /* internal use */
val |= 1 << 12; /* internal use */
val |= 0x100 << 0; /* VLAN A ID */
MIIBUS_WRITEREG(sc->mii_dev, 0, 25, val);
/* Port 1 Control Register 1 and VLAN B */
val = 0;
val |= 0x1 << 12; /* Port 1 VLAN Index */
val |= 1 << 11; /* internal use */
val |= 1 << 10; /* internal use */
val |= 1 << 9; /* internal use */
val |= 1 << 7; /* internal use */
val |= 1 << 6; /* internal use */
val |= 0x12 << 0; /* VLAN B membership */
MIIBUS_WRITEREG(sc->mii_dev, 1, 24, val);
/* Port 1 Control Register 2 and VLAN B */
val = 0;
val |= 1 << 15; /* internal use */
val |= 1 << 14; /* internal use */
val |= 1 << 13; /* internal use */
val |= 1 << 12; /* internal use */
val |= 0x101 << 0; /* VLAN B ID */
MIIBUS_WRITEREG(sc->mii_dev, 1, 25, val);
/* Port 2 Control Register 1 and VLAN C */
val = 0;
val |= 0x2 << 12; /* Port 2 VLAN Index */
val |= 1 << 11; /* internal use */
val |= 1 << 10; /* internal use */
val |= 1 << 9; /* internal use */
val |= 1 << 7; /* internal use */
val |= 1 << 6; /* internal use */
val |= 0x14 << 0; /* VLAN C membership */
MIIBUS_WRITEREG(sc->mii_dev, 2, 24, val);
/* Port 2 Control Register 2 and VLAN C */
val = 0;
val |= 1 << 15; /* internal use */
val |= 1 << 14; /* internal use */
val |= 1 << 13; /* internal use */
val |= 1 << 12; /* internal use */
val |= 0x102 << 0; /* VLAN C ID */
MIIBUS_WRITEREG(sc->mii_dev, 2, 25, val);
/* Port 3 Control Register 1 and VLAN D */
val = 0;
val |= 0x3 << 12; /* Port 3 VLAN Index */
val |= 1 << 11; /* internal use */
val |= 1 << 10; /* internal use */
val |= 1 << 9; /* internal use */
val |= 1 << 7; /* internal use */
val |= 1 << 6; /* internal use */
val |= 0x18 << 0; /* VLAN D membership */
MIIBUS_WRITEREG(sc->mii_dev, 3, 24, val);
/* Port 3 Control Register 2 and VLAN D */
val = 0;
val |= 1 << 15; /* internal use */
val |= 1 << 14; /* internal use */
val |= 1 << 13; /* internal use */
val |= 1 << 12; /* internal use */
val |= 0x103 << 0; /* VLAN D ID */
MIIBUS_WRITEREG(sc->mii_dev, 3, 25, val);
/* Port 4 Control Register 1 and VLAN E */
val = 0;
val |= 0x0 << 12; /* Port 4 VLAN Index */
val |= 1 << 11; /* internal use */
val |= 1 << 10; /* internal use */
val |= 1 << 9; /* internal use */
val |= 1 << 7; /* internal use */
val |= 1 << 6; /* internal use */
val |= 0 << 0; /* VLAN E membership */
MIIBUS_WRITEREG(sc->mii_dev, 4, 24, val);
/* Port 4 Control Register 2 and VLAN E */
val = 0;
val |= 1 << 15; /* internal use */
val |= 1 << 14; /* internal use */
val |= 1 << 13; /* internal use */
val |= 1 << 12; /* internal use */
val |= 0x104 << 0; /* VLAN E ID */
MIIBUS_WRITEREG(sc->mii_dev, 4, 25, val);
#endif
#ifdef RL_DEBUG
rlswitch_phydump(dev);
#endif
MIIBUS_MEDIAINIT(sc->mii_dev);
return (0);
}
static int
rlswitch_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
switch (cmd) {
case MII_POLLSTAT:
break;
case MII_MEDIACHG:
break;
case MII_TICK:
/*
* Is the interface even up?
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
return (0);
break;
}
/* Update the media status. */
PHY_STATUS(sc);
/* Callback if something changed. */
// mii_phy_update(sc, cmd);
return (0);
}
static void
rlswitch_status(struct mii_softc *phy)
{
struct mii_data *mii = phy->mii_pdata;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
mii->mii_media_status |= IFM_ACTIVE;
mii->mii_media_active |=
IFM_100_TX | IFM_FDX | mii_phy_flowstatus(phy);
}
#ifdef RL_DEBUG
static void
rlswitch_phydump(device_t dev) {
int phy, reg, val;
struct mii_softc *sc;
sc = device_get_softc(dev);
device_printf(dev, "rlswitchphydump\n");
for (phy = 0; phy <= 5; phy++) {
printf("PHY%i:", phy);
for (reg = 0; reg <= 31; reg++) {
val = MIIBUS_READREG(sc->mii_dev, phy, reg);
printf(" 0x%x", val);
}
printf("\n");
}
}
#endif
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