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[sundance] Add reset completion check

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Following the example of the Linux driver, we add a check and delay to
make sure that the NIC has finished resetting before the driver issues
any additional commands.

Signed-off-by: Marty Connor <mdc@etherboot.org>
This commit is contained in:
Thomas Miletich 2009-02-27 13:52:03 -05:00 committed by Marty Connor
parent b9d791f4d1
commit afe59d4636
1 changed files with 16 additions and 0 deletions
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16
src/drivers/net/sundance.c
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@ -691,6 +691,22 @@ static int sundance_probe ( struct nic *nic, struct pci_device *pci ) {
/* Reset the chip to erase previous misconfiguration */
DBG ( "ASIC Control is %#x\n", inl(BASE + ASICCtrl) );
outw(0x007f, BASE + ASICCtrl + 2);
/*
* wait for reset to complete
* this is heavily inspired by the linux sundance driver
* according to the linux driver it can take up to 1ms for the reset
* to complete
*/
i = 0;
while(inl(BASE + ASICCtrl) & (ResetBusy << 16)) {
if(i++ >= 10) {
DBG("sundance: NIC reset did not complete.\n");
break;
}
udelay(100);
}
DBG ( "ASIC Control is now %#x.\n", inl(BASE + ASICCtrl) );
sundance_reset(nic);