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[src/trunk]: src/sys/dev/pci Modify PHY initialization code. This change fix ...
details: https://anonhg.NetBSD.org/src/rev/aa1506923099
branches: trunk
changeset: 846624:aa1506923099
user: msaitoh <msaitoh%NetBSD.org@localhost>
date: Mon Nov 25 05:35:26 2019 +0000
description:
Modify PHY initialization code. This change fix a bug that SK-9D21 doesn't
detect MII PHY.
- Add error check to bge_miibus_writereg().
- Change return value of bge_miibus_readreg() when a read error occurred.
It also add error message using with aprint_debug_dev(). This error occurs
on some devices while detecting MII devices.
- Move the location of BGE_MI_MODE register's initialization to next to
bge_chipinit().
- Set BGE_MAC_MODE before calling ifmedia_init() and/or mii_attach().
- Add retry code for mii_attach() failed. Same as FreeBSD.
diffstat:
sys/dev/pci/if_bge.c | 105 ++++++++++++++++++++++++++++++++++++++++----------
1 files changed, 83 insertions(+), 22 deletions(-)
diffs (212 lines):
diff -r a94b30b13a57 -r aa1506923099 sys/dev/pci/if_bge.c
--- a/sys/dev/pci/if_bge.c Mon Nov 25 05:18:59 2019 +0000
+++ b/sys/dev/pci/if_bge.c Mon Nov 25 05:35:26 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: if_bge.c,v 1.341 2019/11/25 05:18:59 msaitoh Exp $ */
+/* $NetBSD: if_bge.c,v 1.342 2019/11/25 05:35:26 msaitoh Exp $ */
/*
* Copyright (c) 2001 Wind River Systems
@@ -79,7 +79,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_bge.c,v 1.341 2019/11/25 05:18:59 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_bge.c,v 1.342 2019/11/25 05:35:26 msaitoh Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -1113,9 +1113,11 @@
if (i == BGE_TIMEOUT) {
aprint_error_dev(sc->bge_dev, "PHY read timed out\n");
rv = ETIMEDOUT;
- } else if ((data & BGE_MICOMM_READFAIL) != 0)
- rv = -1;
- else
+ } else if ((data & BGE_MICOMM_READFAIL) != 0) {
+ /* XXX This error occurs on some devices while attaching. */
+ aprint_debug_dev(sc->bge_dev, "PHY read I/O error\n");
+ rv = EIO;
+ } else
*val = data & BGE_MICOMM_DATA;
if (autopoll & BGE_MIMODE_AUTOPOLL) {
@@ -1133,7 +1135,8 @@
bge_miibus_writereg(device_t dev, int phy, int reg, uint16_t val)
{
struct bge_softc *sc = device_private(dev);
- uint32_t autopoll;
+ uint32_t data, autopoll;
+ int rv = 0;
int i;
if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5906 &&
@@ -1156,13 +1159,22 @@
for (i = 0; i < BGE_TIMEOUT; i++) {
delay(10);
- if (!(CSR_READ_4(sc, BGE_MI_COMM) & BGE_MICOMM_BUSY)) {
+ data = CSR_READ_4(sc, BGE_MI_COMM);
+ if (!(data & BGE_MICOMM_BUSY)) {
delay(5);
- CSR_READ_4(sc, BGE_MI_COMM);
+ data = CSR_READ_4(sc, BGE_MI_COMM);
break;
}
}
+ if (i == BGE_TIMEOUT) {
+ aprint_error_dev(sc->bge_dev, "PHY write timed out\n");
+ rv = ETIMEDOUT;
+ } else if ((data & BGE_MICOMM_READFAIL) != 0) {
+ aprint_error_dev(sc->bge_dev, "PHY write I/O error\n");
+ rv = EIO;
+ }
+
if (autopoll & BGE_MIMODE_AUTOPOLL) {
BGE_STS_SETBIT(sc, BGE_STS_AUTOPOLL);
BGE_SETBIT_FLUSH(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
@@ -1176,7 +1188,7 @@
return ETIMEDOUT;
}
- return 0;
+ return rv;
}
static void
@@ -3176,14 +3188,14 @@
uint32_t command;
struct ifnet *ifp;
struct mii_data * const mii = &sc->bge_mii;
- uint32_t misccfg, mimode;
+ uint32_t misccfg, mimode, macmode;
void * kva;
u_char eaddr[ETHER_ADDR_LEN];
pcireg_t memtype, subid, reg;
bus_addr_t memaddr;
uint32_t pm_ctl;
bool no_seeprom;
- int capmask;
+ int capmask, trys;
int mii_flags;
int map_flags;
char intrbuf[PCI_INTRSTR_LEN];
@@ -3427,15 +3439,6 @@
BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM57780)
sc->bge_flags |= BGEF_CPMU_PRESENT;
- /* Set MI_MODE */
- mimode = BGE_MIMODE_PHYADDR(sc->bge_phy_addr);
- if ((sc->bge_flags & BGEF_CPMU_PRESENT) != 0)
- mimode |= BGE_MIMODE_500KHZ_CONST;
- else
- mimode |= BGE_MIMODE_BASE;
- CSR_WRITE_4(sc, BGE_MI_MODE, mimode);
- DELAY(80);
-
/*
* When using the BCM5701 in PCI-X mode, data corruption has
* been observed in the first few bytes of some received packets.
@@ -3680,6 +3683,21 @@
return;
}
+ if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_BCM5700) {
+ BGE_SETBIT_FLUSH(sc, BGE_MISC_LOCAL_CTL,
+ BGE_MLC_MISCIO_OUT1 | BGE_MLC_MISCIO_OUTEN1);
+ DELAY(100);
+ }
+
+ /* Set MI_MODE */
+ mimode = BGE_MIMODE_PHYADDR(sc->bge_phy_addr);
+ if ((sc->bge_flags & BGEF_CPMU_PRESENT) != 0)
+ mimode |= BGE_MIMODE_500KHZ_CONST;
+ else
+ mimode |= BGE_MIMODE_BASE;
+ CSR_WRITE_4_FLUSH(sc, BGE_MI_MODE, mimode);
+ DELAY(80);
+
/*
* Get station address from the EEPROM.
*/
@@ -3866,8 +3884,14 @@
prop_dictionary_set_uint32(dict, "phyflags", sc->bge_phy_flags);
prop_dictionary_set_uint32(dict, "chipid", sc->bge_chipid);
+ macmode = CSR_READ_4(sc, BGE_MAC_MODE);
+ macmode &= ~BGE_MACMODE_PORTMODE;
/* Initialize ifmedia structures. */
if (sc->bge_flags & BGEF_FIBER_TBI) {
+ CSR_WRITE_4_FLUSH(sc, BGE_MAC_MODE,
+ macmode | BGE_PORTMODE_TBI);
+ DELAY(40);
+
sc->ethercom.ec_ifmedia = &sc->bge_ifmedia;
ifmedia_init(&sc->bge_ifmedia, IFM_IMASK, bge_ifmedia_upd,
bge_ifmedia_sts);
@@ -3879,6 +3903,22 @@
/* Pretend the user requested this setting */
sc->bge_ifmedia.ifm_media = sc->bge_ifmedia.ifm_cur->ifm_media;
} else {
+ uint16_t phyreg;
+ int rv;
+ /*
+ * Do transceiver setup and tell the firmware the
+ * driver is down so we can try to get access the
+ * probe if ASF is running. Retry a couple of times
+ * if we get a conflict with the ASF firmware accessing
+ * the PHY.
+ */
+ if (sc->bge_flags & BGEF_FIBER_MII)
+ macmode |= BGE_PORTMODE_GMII;
+ else
+ macmode |= BGE_PORTMODE_MII;
+ CSR_WRITE_4_FLUSH(sc, BGE_MAC_MODE, macmode);
+ DELAY(40);
+
/*
* Do transceiver setup and tell the firmware the
* driver is down so we can try to get access the
@@ -3886,18 +3926,39 @@
* if we get a conflict with the ASF firmware accessing
* the PHY.
*/
+ trys = 0;
BGE_CLRBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
- bge_asf_driver_up(sc);
-
sc->ethercom.ec_mii = mii;
ifmedia_init(&mii->mii_media, 0, bge_ifmedia_upd,
bge_ifmedia_sts);
mii_flags = MIIF_DOPAUSE;
if (sc->bge_flags & BGEF_FIBER_MII)
mii_flags |= MIIF_HAVEFIBER;
+again:
+ bge_asf_driver_up(sc);
+ rv = bge_miibus_readreg(sc->bge_dev, sc->bge_phy_addr,
+ MII_BMCR, &phyreg);
+ if ((rv != 0) || ((phyreg & BMCR_PDOWN) != 0)) {
+ int i;
+
+ bge_miibus_writereg(sc->bge_dev, sc->bge_phy_addr,
+ MII_BMCR, BMCR_RESET);
+ /* Wait up to 500ms for it to complete. */
+ for (i = 0; i < 500; i++) {
+ bge_miibus_readreg(sc->bge_dev,
+ sc->bge_phy_addr, MII_BMCR, &phyreg);
+ if ((phyreg & BMCR_RESET) == 0)
+ break;
+ DELAY(1000);
+ }
+ }
+
mii_attach(sc->bge_dev, mii, capmask, sc->bge_phy_addr,
MII_OFFSET_ANY, mii_flags);
+ if (LIST_EMPTY(&mii->mii_phys) && (trys++ < 4))
+ goto again;
+
if (LIST_EMPTY(&mii->mii_phys)) {
aprint_error_dev(sc->bge_dev, "no PHY found!\n");
ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_MANUAL,
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