defxx: Disable DEFEA's ESIC I/O decoding on shutdown
Make sure the option card does not respond after shutdown by disabling it via ESIC's Expansion Board Control register. Also disable memory and port I/O decoders, the latter in particular to disable slot-specific I/O decoding that otherwise remains active even in the board is disabled. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -856,6 +856,12 @@ static void dfx_bus_uninit(struct net_device *dev)
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val = inb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0);
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val &= ~PI_CONFIG_STAT_0_M_INT_ENB;
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outb(val, base_addr + PI_ESIC_K_IO_CONFIG_STAT_0);
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/* Disable the board. */
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outb(0, base_addr + PI_ESIC_K_SLOT_CNTRL);
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/* Disable memory and port decoders. */
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outb(0, base_addr + PI_ESIC_K_FUNCTION_CNTRL);
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}
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if (dfx_bus_pci) {
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/* Disable interrupts at PCI bus interface chip (PFI) */
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