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| author | yongari <yongari@FreeBSD.org> | 2009-06-21 06:18:19 +0000 |
|---|---|---|
| committer | yongari <yongari@FreeBSD.org> | 2009-06-21 06:18:19 +0000 |
| commit | 0e5575121cc2631be70948b1ee62e3357f36c014 (patch) | |
| tree | 0737fa82bae8986dcb70c33c29e9da14b0cd35be | |
| parent | e0aec8b799ca9a039172b50e8e392b6869568a4c (diff) | |
| download | FreeBSD-src-0e5575121cc2631be70948b1ee62e3357f36c014.zip FreeBSD-src-0e5575121cc2631be70948b1ee62e3357f36c014.tar.gz | |
Due to possible PCI bus lock-up issues fxp(4) didn't perform full
hardware reset in attach phase. Selective reset does not clear
configured parameters so I think full hardware reset is required.
To prevent PCI bus lock-up, do selective reset first which will get
off the controller from PCI bus and request software reset after
selective reset. Software reset will unmask interrupts so disable
it after the reset.
| -rw-r--r-- | sys/dev/fxp/if_fxp.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/dev/fxp/if_fxp.c b/sys/dev/fxp/if_fxp.c index 6bd6f37..b2ef0ef 100644 --- a/sys/dev/fxp/if_fxp.c +++ b/sys/dev/fxp/if_fxp.c @@ -466,10 +466,14 @@ fxp_attach(device_t dev) } /* - * Reset to a stable state. + * Put CU/RU idle state and prepare full reset. */ CSR_WRITE_4(sc, FXP_CSR_PORT, FXP_PORT_SELECTIVE_RESET); DELAY(10); + /* Full reset and disable interrupts. */ + CSR_WRITE_4(sc, FXP_CSR_PORT, FXP_PORT_SOFTWARE_RESET); + DELAY(10); + CSR_WRITE_1(sc, FXP_CSR_SCB_INTRCNTL, FXP_SCB_INTR_DISABLE); /* * Find out how large of an SEEPROM we have. |
