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| author | yongari <yongari@FreeBSD.org> | 2009-12-23 17:54:24 +0000 |
|---|---|---|
| committer | yongari <yongari@FreeBSD.org> | 2009-12-23 17:54:24 +0000 |
| commit | dc94299fa0109c531087d1d3e7bd195fa0226d3c (patch) | |
| tree | fe42357981061358c2c5e8f4f5dc0cfae706811e /sys/dev/ste/if_ste.c | |
| parent | 1469c6e0a82e5624f13c1af33c8427bea5c83cef (diff) | |
| download | FreeBSD-src-dc94299fa0109c531087d1d3e7bd195fa0226d3c.zip FreeBSD-src-dc94299fa0109c531087d1d3e7bd195fa0226d3c.tar.gz | |
Reimplement controller reset. Datasheet says full reset takes about
1ms. Since we switched to memory register mapping make sure to
flush PCI posted write by reading the register again.
While I'm here add additional delays in loop while driver waits the
completion of the reset.
Diffstat (limited to 'sys/dev/ste/if_ste.c')
| -rw-r--r-- | sys/dev/ste/if_ste.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/sys/dev/ste/if_ste.c b/sys/dev/ste/if_ste.c index 1ca3f3c..7249f84 100644 --- a/sys/dev/ste/if_ste.c +++ b/sys/dev/ste/if_ste.c @@ -1731,20 +1731,27 @@ ste_stop(struct ste_softc *sc) static void ste_reset(struct ste_softc *sc) { + uint32_t ctl; int i; - STE_SETBIT4(sc, STE_ASICCTL, - STE_ASICCTL_GLOBAL_RESET|STE_ASICCTL_RX_RESET| - STE_ASICCTL_TX_RESET|STE_ASICCTL_DMA_RESET| - STE_ASICCTL_FIFO_RESET|STE_ASICCTL_NETWORK_RESET| - STE_ASICCTL_AUTOINIT_RESET|STE_ASICCTL_HOST_RESET| - STE_ASICCTL_EXTRESET_RESET); - - DELAY(100000); + ctl = CSR_READ_4(sc, STE_ASICCTL); + ctl |= STE_ASICCTL_GLOBAL_RESET | STE_ASICCTL_RX_RESET | + STE_ASICCTL_TX_RESET | STE_ASICCTL_DMA_RESET | + STE_ASICCTL_FIFO_RESET | STE_ASICCTL_NETWORK_RESET | + STE_ASICCTL_AUTOINIT_RESET |STE_ASICCTL_HOST_RESET | + STE_ASICCTL_EXTRESET_RESET; + CSR_WRITE_4(sc, STE_ASICCTL, ctl); + CSR_READ_4(sc, STE_ASICCTL); + /* + * Due to the need of accessing EEPROM controller can take + * up to 1ms to complete the global reset. + */ + DELAY(1000); for (i = 0; i < STE_TIMEOUT; i++) { if (!(CSR_READ_4(sc, STE_ASICCTL) & STE_ASICCTL_RESET_BUSY)) break; + DELAY(10); } if (i == STE_TIMEOUT) |
