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Allow bit 1 of I/O BARs to be set

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Usually bit 1 of I/O BARs is 0 since it is reserved, but control has an I/O BAR where this bit is set.
bar_cfg is used to determine the default values of the least significant bits (2 bits for I/O BARs and 4 bits for Memory BARs).
The upper bits of bar_cfg determine which bits can be set and also determines the size of the BAR.
This commit is contained in:
joevt 2022-09-02 00:59:35 -07:00
parent 7e7522d4b7
commit a24840803c
1 changed files with 1 additions and 1 deletions
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2
devices/common/pci/pcidevice.cpp
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@ -243,7 +243,7 @@ void PCIDevice::set_bar_value(int bar_num, uint32_t value)
{
uint32_t bar_cfg = this->bars_cfg[bar_num];
if (bar_cfg & 1) {
this->bars[bar_num] = (value & 0xFFFFFFFCUL) | 1;
this->bars[bar_num] = (value & 0xFFFFFFFCUL) | (bar_cfg & 3);
} else {
if (bar_cfg & 6) {
ABORT_F("Invalid or unsupported PCI space type: %d", (bar_cfg >> 1) & 3);