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Shutdown a little better by commenting the shutdown code and acknowledging

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any interrupts after we turn off the interrupt mask.
This commit is contained in:
Warner Losh 2005-10-29 03:36:00 +00:00
parent d9a423c36f
commit ba61c672f6
1 changed files with 9 additions and 4 deletions
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13
sys/dev/pccbb/pccbb.c
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@ -342,15 +342,21 @@ int
cbb_shutdown(device_t brdev)
{
struct cbb_softc *sc = (struct cbb_softc *)device_get_softc(brdev);
/* properly reset everything at shutdown */
/*
* Place the cards in reset, turn off the interrupts and power
* down the socket.
*/
PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL, |CBBM_BRIDGECTRL_RESET, 2);
exca_clrb(&sc->exca[0], EXCA_INTR, EXCA_INTR_RESET);
cbb_set(sc, CBB_SOCKET_MASK, 0);
cbb_set(sc, CBB_SOCKET_EVENT, 0xffffffff);
cbb_power(brdev, CARD_OFF);
/*
* For paranoia, turn off all address decoding. Really not needed,
* it seems, but it can't hurt
*/
exca_putb(&sc->exca[0], EXCA_ADDRWIN_ENABLE, 0);
pci_write_config(brdev, CBBR_MEMBASE0, 0, 4);
pci_write_config(brdev, CBBR_MEMLIMIT0, 0, 4);
@ -360,7 +366,6 @@ cbb_shutdown(device_t brdev)
pci_write_config(brdev, CBBR_IOLIMIT0, 0, 4);
pci_write_config(brdev, CBBR_IOBASE1, 0, 4);
pci_write_config(brdev, CBBR_IOLIMIT1, 0, 4);
pci_write_config(brdev, PCIR_COMMAND, 0, 2);
return (0);
}