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Special-case the LED twiddling code so that it doesn't do anything

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on the NEC VersaPro NoteBook PC. This 21143 implementation has no LEDs,
and flipping the LED control bits somehow stops it from establishing
a link. We check the subsystem ID and don't flip the LED control
bits for the NEC NIC.
This commit is contained in:
Bill Paul 2000-09-07 18:51:04 +00:00
parent 2a512567a4
commit 78999dd117
4 changed files with 24 additions and 4 deletions
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13
sys/dev/dc/if_dc.c
View File

@ -1759,6 +1759,15 @@ static int dc_attach(dev)
sc->dc_flags |= DC_21143_NWAY;
mii_phy_probe(dev, &sc->dc_miibus,
dc_ifmedia_upd, dc_ifmedia_sts);
/*
* For non-MII cards, we need to have the 21143
* drive the LEDs. Except there are some systems
* like the NEC VersaPro NoteBook PC which have no
* LEDs, and twiddling these bits has adverse effects
* on them. (I.e. you suddenly can't get a link.)
*/
if (pci_read_config(dev, DC_PCI_CSID, 4) != 0x80281033)
sc->dc_flags |= DC_TULIP_LEDS;
error = 0;
}
@ -2730,10 +2739,10 @@ static void dc_init(xsc)
* MII port, program the LED control pins so we get
* link and activity indications.
*/
if (DC_IS_INTEL(sc) && sc->dc_pmode == DC_PMODE_SYM) {
if (sc->dc_flags & DC_TULIP_LEDS) {
CSR_WRITE_4(sc, DC_WATCHDOG,
DC_WDOG_CTLWREN|DC_WDOG_LINK|DC_WDOG_ACTIVITY);
CSR_WRITE_4(sc, DC_WATCHDOG, DC_WDOG_LINK|DC_WDOG_ACTIVITY);
CSR_WRITE_4(sc, DC_WATCHDOG, 0);
}
/*

1
sys/dev/dc/if_dcreg.h
View File

@ -679,6 +679,7 @@ struct dc_softc {
#define DC_21143_NWAY 0x00000800
#define DC_128BIT_HASH 0x00001000
#define DC_64BIT_HASH 0x00002000
#define DC_TULIP_LEDS 0x00004000
/*
* register space access macros

13
sys/pci/if_dc.c
View File

@ -1759,6 +1759,15 @@ static int dc_attach(dev)
sc->dc_flags |= DC_21143_NWAY;
mii_phy_probe(dev, &sc->dc_miibus,
dc_ifmedia_upd, dc_ifmedia_sts);
/*
* For non-MII cards, we need to have the 21143
* drive the LEDs. Except there are some systems
* like the NEC VersaPro NoteBook PC which have no
* LEDs, and twiddling these bits has adverse effects
* on them. (I.e. you suddenly can't get a link.)
*/
if (pci_read_config(dev, DC_PCI_CSID, 4) != 0x80281033)
sc->dc_flags |= DC_TULIP_LEDS;
error = 0;
}
@ -2730,10 +2739,10 @@ static void dc_init(xsc)
* MII port, program the LED control pins so we get
* link and activity indications.
*/
if (DC_IS_INTEL(sc) && sc->dc_pmode == DC_PMODE_SYM) {
if (sc->dc_flags & DC_TULIP_LEDS) {
CSR_WRITE_4(sc, DC_WATCHDOG,
DC_WDOG_CTLWREN|DC_WDOG_LINK|DC_WDOG_ACTIVITY);
CSR_WRITE_4(sc, DC_WATCHDOG, DC_WDOG_LINK|DC_WDOG_ACTIVITY);
CSR_WRITE_4(sc, DC_WATCHDOG, 0);
}
/*

1
sys/pci/if_dcreg.h
View File

@ -679,6 +679,7 @@ struct dc_softc {
#define DC_21143_NWAY 0x00000800
#define DC_128BIT_HASH 0x00001000
#define DC_64BIT_HASH 0x00002000
#define DC_TULIP_LEDS 0x00004000
/*
* register space access macros