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#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include "i82801dbm.h"
void i82801dbm_enable(device_t dev)
{
device_t lpc_dev;
unsigned int index;
uint16_t reg_old, reg;
// all 82801dbm device ares in bus 0
unsigned int devfn;
devfn = PCI_DEVFN(0x1f, 0); // lpc
lpc_dev = dev_find_slot(0, devfn); // 0
if (!lpc_dev ) {
return;
}
#if 0
if ((lpc_dev->vendor != PCI_VENDOR_ID_INTEL) ||
(lpc_dev->device != PCI_DEVICE_ID_INTEL_82801DBM_1F0)) {
uint32_t id;
id = pci_read_config32(lpc_dev, PCI_VENDOR_ID);
if (id != (PCI_VENDOR_ID_INTEL | (PCI_DEVICE_ID_INTEL_82801DBM_1F0 << 16))) {
return;
}
}
#endif
index = (dev->path.u.pci.devfn & 7);
if((dev->path.u.pci.devfn & ~0x7)==devfn) { // D=0x1f
if(index==0){ //1f0
index = 14;
}
} else { // D=0x1d
index += 8;
}
reg_old = pci_read_config16(lpc_dev, FUNC_DIS);
reg = reg_old;
reg &= ~(1<<index); // enable it
if (!dev->enabled) {
reg |= (1<<index); // disable it
}
if (reg != reg_old) {
pci_write_config16(lpc_dev, FUNC_DIS, reg);
}
reg = pci_read_config16(lpc_dev, FUNC_DIS);
}
struct chip_operations southbridge_intel_i82801dbm_control = {
.name = "Intel 82801dbm Southbridge",
.enable_dev = i82801dbm_enable,
};
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