| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* This file is part of the coreboot project. */ |
| |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ops.h> |
| #include <device/pci_ids.h> |
| #include "i82801ix.h" |
| |
| static void pci_init(struct device *dev) |
| { |
| u16 reg16; |
| u8 reg8; |
| |
| /* This device has no interrupt */ |
| pci_write_config8(dev, PCI_INTERRUPT_LINE, 0xff); |
| |
| /* Master Latency Count must be set to 0x04! */ |
| reg8 = pci_read_config8(dev, D30F0_SMLT); |
| reg8 &= 0x07; |
| reg8 |= (0x04 << 3); |
| pci_write_config8(dev, D30F0_SMLT, reg8); |
| |
| /* Clear errors in status registers */ |
| reg16 = pci_read_config16(dev, PCI_STATUS); |
| //reg16 |= 0xf900; |
| pci_write_config16(dev, PCI_STATUS, reg16); |
| |
| reg16 = pci_read_config16(dev, PCI_SEC_STATUS); |
| // reg16 |= 0xf900; |
| pci_write_config16(dev, PCI_SEC_STATUS, reg16); |
| } |
| |
| static struct pci_operations pci_ops = { |
| .set_subsystem = pci_dev_set_subsystem, |
| }; |
| |
| static struct device_operations device_ops = { |
| .read_resources = pci_bus_read_resources, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_bus_enable_resources, |
| .init = pci_init, |
| .scan_bus = pci_scan_bridge, |
| .reset_bus = pci_bus_reset, |
| .ops_pci = &pci_ops, |
| }; |
| |
| static const unsigned short pci_device_ids[] = { |
| 0x244e, /* Desktop */ |
| 0x2448, /* Mobile */ |
| 0 |
| }; |
| |
| static const struct pci_driver ich9_pci __pci_driver = { |
| .ops = &device_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .devices = pci_device_ids, |
| }; |