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Work around ATI expansion ROM problem on IA64 caused by prototype HP 

McKinley systems. (Bdale Garbee)
This commit is contained in:
Daniel Stone 2005-08-26 05:47:36 +00:00
parent 40374d1149
commit 53e489c0e3
1 changed files with 18 additions and 2 deletions
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20
hw/xfree86/os-support/bus/Pci.c
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@ -1091,14 +1091,30 @@ handlePciBIOS(PCITAG Tag, int basereg,
for (i = ROM_BASE_PRESET; i <= ROM_BASE_FIND; i++) {
memType savebase = 0, newbase, romaddr;
if (i == ROM_BASE_PRESET) {
switch (i) {
case ROM_BASE_PRESET:
/* Does the driver have a preference? */
if (basereg > ROM_BASE_PRESET && basereg <= ROM_BASE_FIND)
b_reg = basereg;
else
b_reg = ++i;
} else
break;
case ROM_BASE_FIND:
/*
* If we have something that looks like a valid address
* in romsave, it's probably not going to help to try
* to guess a new address and reprogram it.
*/
if (PCIGETROM(romsave)) {
pciWriteLong(Tag, PCI_MAP_ROM_REG, PCI_MAP_ROM_ADDRESS_MASK);
if (romsave != pciReadLong(Tag, PCI_MAP_ROM_REG)) {
pciWriteLong(Tag, PCI_MAP_ROM_REG, romsave);
continue;
}
}
default:
b_reg = i;
}
if (!(newbase = getValidBIOSBase(Tag, b_reg)))
continue; /* no valid address found */