mirror/freebsd
1
0
Fork 0
mirror of https://git.FreeBSD.org/src.git synced 2024-12-18 10:35:55 +00:00
Code Issues Releases Activity
ed8c6514c4
freebsd/sys/dev/mii/mxphy.c
Bill Paul ed8c6514c4 Convert the mx driver to miibus. 
In order to make this work, I created a pseudo-PHY driver to deal with
Macronix chips that use the built-in NWAY support and symbol mode port.
This is actually all of them, with the exception of the original MX98713
which presents its NWAY support via the MII serial interface.

The mxphy driver actually manipulates the controller registers directly
rather than using the miibus_readreg()/miibus_writereg() bus interface
since there are no MII registers to read. The mx driver itself pretends
that the NWAY interface is a PHY locayed at MII address 31 for the sole
purpose of allowing the mxphy_probe() routine to know when it needs to
attach to a host controller.
1999-10-16 05:24:13 +00:00

488 lines
12 KiB
C
Raw Blame History

/*
* Copyright (c) 1997, 1998, 1999
* Bill Paul <wpaul@ee.columbia.edu>. 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.
*
* $FreeBSD$
*/
/*
* pseudo-driver for internal NWAY support on Macronix 98713/98715/98725
* PMAC controller chips. The Macronix chips use the same internal
* NWAY register layout as the DEC/Intel 21143. Technically we're
* abusing the miibus code to handle the media selection and NWAY
* support here since there is no MII interface. However the logical
* operations are roughly the same, and the alternative is to create
* a fake MII interface in the driver, which is harder to do.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/socket.h>
#include <sys/errno.h>
#include <sys/module.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 <dev/mii/miidevs.h>
#include <machine/clock.h>
#include <machine/bus_pio.h>
#include <machine/bus_memio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/bus.h>
#include <pci/if_mxreg.h>
#include "miibus_if.h"
#if !defined(lint)
static const char rcsid[] =
"$FreeBSD$";
#endif
#define MX_SETBIT(sc, reg, x) \
CSR_WRITE_4(sc, reg, \
CSR_READ_4(sc, reg) | x)
#define MX_CLRBIT(sc, reg, x) \
CSR_WRITE_4(sc, reg, \
CSR_READ_4(sc, reg) & ~x)
struct mxphy_softc {
struct mii_softc mx_mii;
u_int32_t mx_linkstate;
u_int32_t mx_media;
};
static int mxphy_probe __P((device_t));
static int mxphy_attach __P((device_t));
static int mxphy_detach __P((device_t));
static device_method_t mxphy_methods[] = {
/* device interface */
DEVMETHOD(device_probe, mxphy_probe),
DEVMETHOD(device_attach, mxphy_attach),
DEVMETHOD(device_detach, mxphy_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
{ 0, 0 }
};
static devclass_t mxphy_devclass;
static driver_t mxphy_driver = {
"mxphy",
mxphy_methods,
sizeof(struct mxphy_softc)
};
DRIVER_MODULE(mxphy, miibus, mxphy_driver, mxphy_devclass, 0, 0);
int mxphy_service __P((struct mii_softc *, struct mii_data *, int));
void mxphy_status __P((struct mii_softc *));
static int mxphy_auto __P((struct mii_softc *, int));
static void mxphy_auto_timeout __P((void *));
static void mxphy_reset __P((struct mii_softc *));
static int mxphy_probe(dev)
device_t dev;
{
struct mii_attach_args *ma;
ma = device_get_ivars(dev);
/*
* The mx driver will report the Macronix vendor ID
* and the 98715 device ID to let us know that it wants
* us to attach. Actually, we could also be attached
* in the case of a 98713A chip, but there's no point
* in differentiating between the two since we do the
* same things for both.
*/
if (ma->mii_id1 != MX_VENDORID ||
ma->mii_id2 != MX_DEVICEID_987x5)
return(ENXIO);
device_set_desc(dev, "Macronix NWAY media interface");
return (0);
}
static int mxphy_attach(dev)
device_t dev;
{
struct mxphy_softc *msc;
struct mii_softc *sc;
struct mii_attach_args *ma;
struct mii_data *mii;
msc = device_get_softc(dev);
sc = &msc->mx_mii;
ma = device_get_ivars(dev);
sc->mii_dev = device_get_parent(dev);
mii = device_get_softc(sc->mii_dev);
LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
sc->mii_inst = mii->mii_instance;
sc->mii_phy = ma->mii_phyno;
sc->mii_service = mxphy_service;
sc->mii_pdata = mii;
sc->mii_flags |= MIIF_NOISOLATE;
mii->mii_instance++;
#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
BMCR_ISO);
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
BMCR_LOOP|BMCR_S100);
/*mxphy_reset(sc);*/
sc->mii_capabilities =
BMSR_ANEG|BMSR_100TXFDX|BMSR_100TXHDX|BMSR_10TFDX|BMSR_10THDX;
sc->mii_capabilities &= ma->mii_capmask;
device_printf(dev, " ");
if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
printf("no media present");
else
mii_add_media(mii, sc->mii_capabilities, sc->mii_inst);
printf("\n");
#undef ADD
MIIBUS_MEDIAINIT(sc->mii_dev);
return(0);
}
static int mxphy_detach(dev)
device_t dev;
{
struct mxphy_softc *sc;
struct mii_data *mii;
sc = device_get_softc(dev);
mii = device_get_softc(device_get_parent(dev));
sc->mx_mii.mii_dev = NULL;
LIST_REMOVE(&sc->mx_mii, mii_list);
return(0);
}
int
mxphy_service(xsc, mii, cmd)
struct mii_softc *xsc;
struct mii_data *mii;
int cmd;
{
struct mx_softc *mx_sc;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int reg;
u_int32_t mode;
struct mxphy_softc *msc = (struct mxphy_softc *)xsc;
struct mii_softc *sc = (struct mii_softc *)&msc->mx_mii;
mx_sc = mii->mii_ifp->if_softc;
switch (cmd) {
case MII_POLLSTAT:
/*
* If we're not polling our PHY instance, just return.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
return (0);
}
break;
case MII_MEDIACHG:
/*
* If the media indicates a different PHY instance,
* isolate ourselves.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
return (0);
}
/*
* If the interface is not up, don't do anything.
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
break;
mode = CSR_READ_4(mx_sc, MX_NETCFG);
mode &= ~(MX_NETCFG_FULLDUPLEX|MX_NETCFG_PORTSEL|
MX_NETCFG_PCS|MX_NETCFG_SCRAMBLER|MX_NETCFG_SPEEDSEL);
switch (IFM_SUBTYPE(ife->ifm_media)) {
case IFM_AUTO:
mxphy_reset(sc);
(void) mxphy_auto(sc, 1);
msc->mx_linkstate = msc->mx_media = 0;
break;
case IFM_100_T4:
/*
* XXX Not supported as a manual setting right now.
*/
return (EINVAL);
case IFM_100_TX:
mode |= MX_NETCFG_PORTSEL|MX_NETCFG_PCS|
MX_NETCFG_SCRAMBLER;
if ((ife->ifm_media & IFM_GMASK) == IFM_FDX)
mode |= MX_NETCFG_FULLDUPLEX;
else
mode &= ~MX_NETCFG_FULLDUPLEX;
MX_CLRBIT(mx_sc, MX_10BTCTRL, MX_TCTL_AUTONEGENBL);
CSR_WRITE_4(mx_sc, MX_NETCFG, mode);
break;
case IFM_10_T:
mode &= ~MX_NETCFG_PORTSEL;
mode |= MX_NETCFG_SPEEDSEL;
if ((ife->ifm_media & IFM_GMASK) == IFM_FDX)
mode |= MX_NETCFG_FULLDUPLEX;
else
mode &= ~MX_NETCFG_FULLDUPLEX;
MX_CLRBIT(mx_sc, MX_10BTCTRL, MX_TCTL_AUTONEGENBL);
CSR_WRITE_4(mx_sc, MX_NETCFG, mode);
break;
default:
return(EINVAL);
break;
}
break;
case MII_TICK:
/*
* If we're not currently selected, just return.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
return (0);
/*
* Only used for autonegotiation.
*/
if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
return (0);
/*
* Is the interface even up?
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
return (0);
/*
* Check to see if we have link. If we do, we don't
* need to restart the autonegotiation process. Read
* the BMSR twice in case it's latched.
*/
reg = CSR_READ_4(mx_sc, MX_10BTSTAT) &
(MX_TSTAT_LS10|MX_TSTAT_LS100);
reg = CSR_READ_4(mx_sc, MX_10BTSTAT) &
(MX_TSTAT_LS10|MX_TSTAT_LS100);
if (reg == msc->mx_linkstate)
return (0);
if (!reg) {
msc->mx_linkstate = reg;
break;
}
msc->mx_media = 0;
sc->mii_ticks = 0;
msc->mx_linkstate = reg;
mxphy_reset(sc);
if (mxphy_auto(sc, 0) == EJUSTRETURN)
return (0);
break;
}
/* Update the media status. */
mxphy_status(sc);
/* Callback if something changed. */
if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
MIIBUS_STATCHG(sc->mii_dev);
DELAY(100000);
sc->mii_active = mii->mii_media_active;
}
return (0);
}
void
mxphy_status(sc)
struct mii_softc *sc;
{
struct mii_data *mii = sc->mii_pdata;
int /*bmsr, bmcr,*/ reg, anlpar;
struct mx_softc *mx_sc;
struct mxphy_softc *msc = (struct mxphy_softc *)sc;
mx_sc = mii->mii_ifp->if_softc;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
reg = CSR_READ_4(mx_sc, MX_10BTSTAT) &
(MX_TSTAT_LS10|MX_TSTAT_LS100);
if (!(reg & MX_TSTAT_LS10) || !(reg & MX_TSTAT_LS100))
mii->mii_media_status |= IFM_ACTIVE;
if (CSR_READ_4(mx_sc, MX_10BTCTRL) & MX_TCTL_AUTONEGENBL &&
CSR_READ_4(mx_sc, MX_10BTSTAT) & MX_TSTAT_ANEGSTAT) {
if (!(CSR_READ_4(mx_sc, MX_10BTSTAT) & 0xFFFF0000)) {
/* Erg, still trying, I guess... */
if (CSR_READ_4(mx_sc, MX_10BTSTAT) &
MX_TSTAT_LP_CAN_NWAY) {
mii->mii_media_active |= IFM_NONE;
return;
} else
msc->mx_media = 0;
}
if (CSR_READ_4(mx_sc, MX_10BTSTAT) & MX_TSTAT_LP_CAN_NWAY) {
anlpar = CSR_READ_4(mx_sc, MX_10BTSTAT) >> 16;
if (anlpar & ANLPAR_T4)
mii->mii_media_active |= IFM_100_T4;
else if (anlpar & ANLPAR_TX_FD)
mii->mii_media_active |= IFM_100_TX|IFM_FDX;
else if (anlpar & ANLPAR_TX)
mii->mii_media_active |= IFM_100_TX;
else if (anlpar & ANLPAR_10_FD)
mii->mii_media_active |= IFM_10_T|IFM_FDX;
else if (anlpar & ANLPAR_10)
mii->mii_media_active |= IFM_10_T;
else
mii->mii_media_active |= IFM_NONE;
msc->mx_media = mii->mii_media_active;
return;
}
}
if (msc->mx_media)
mii->mii_media_active = msc->mx_media;
reg = CSR_READ_4(mx_sc, MX_10BTSTAT) &
(MX_TSTAT_LS10|MX_TSTAT_LS100);
msc->mx_linkstate = reg;
if (!(reg & MX_TSTAT_LS100))
mii->mii_media_active |= IFM_100_TX;
else
mii->mii_media_active |= IFM_10_T;
msc->mx_media = mii->mii_media_active;
return;
}
static int
mxphy_auto(mii, waitfor)
struct mii_softc *mii;
int waitfor;
{
int i;
struct mx_softc *sc;
sc = mii->mii_pdata->mii_ifp->if_softc;
if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) {
CSR_WRITE_4(sc, MX_10BTCTRL, 0x3FFFF);
MX_CLRBIT(sc, MX_NETCFG, MX_NETCFG_PORTSEL);
MX_SETBIT(sc, MX_NETCFG, MX_NETCFG_FULLDUPLEX);
MX_SETBIT(sc, MX_10BTCTRL, MX_TCTL_AUTONEGENBL);
MX_SETBIT(sc, MX_10BTCTRL, MX_ASTAT_TXDISABLE);
DELAY(1000000);
}
if (waitfor) {
/* Wait 500ms for it to complete. */
for (i = 0; i < 500; i++) {
if ((CSR_READ_4(sc, MX_10BTSTAT) & MX_TSTAT_ANEGSTAT)
== MX_ASTAT_AUTONEGCMP)
return(0);
DELAY(1000);
}
/*
* Don't need to worry about clearing MIIF_DOINGAUTO.
* If that's set, a timeout is pending, and it will
* clear the flag.
*/
return(EIO);
}
/*
* Just let it finish asynchronously. This is for the benefit of
* the tick handler driving autonegotiation. Don't want 500ms
* delays all the time while the system is running!
*/
if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) {
mii->mii_flags |= MIIF_DOINGAUTO;
timeout(mxphy_auto_timeout, mii, hz >> 1);
}
return(EJUSTRETURN);
}
static void
mxphy_auto_timeout(arg)
void *arg;
{
struct mii_softc *mii = arg;
int s;
s = splnet();
mii->mii_flags &= ~MIIF_DOINGAUTO;
/* Update the media status. */
(void) (*mii->mii_service)(mii, mii->mii_pdata, MII_POLLSTAT);
splx(s);
}
static void
mxphy_reset(mii)
struct mii_softc *mii;
{
struct mx_softc *sc;
sc = mii->mii_pdata->mii_ifp->if_softc;
MX_SETBIT(sc, MX_SIARESET, MX_SIA_RESET_NWAY);
DELAY(1000);
MX_CLRBIT(sc, MX_SIARESET, MX_SIA_RESET_NWAY);
return;
}
Reference in New Issue View Git Blame Copy Permalink