| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_def.h> |
| #include <device/pci_ops.h> |
| #include <device/pci_ids.h> |
| #include "i82801gx.h" |
| |
| static void pci_init(struct device *dev) |
| { |
| u16 reg16; |
| |
| /* Enable Bus Master */ |
| pci_or_config16(dev, PCI_COMMAND, PCI_COMMAND_MASTER); |
| |
| /* This device has no interrupt */ |
| pci_write_config8(dev, INTR, 0xff); |
| |
| /* Disable parity error response and SERR */ |
| pci_and_config16(dev, PCI_BRIDGE_CONTROL, |
| ~(PCI_BRIDGE_CTL_PARITY | PCI_BRIDGE_CTL_SERR)); |
| |
| /* Master Latency Count must be set to 0x04! */ |
| pci_update_config8(dev, SMLT, 0x07, 0x04 << 3); |
| |
| /* Clear errors in status registers. FIXME: Do something? */ |
| reg16 = pci_read_config16(dev, PSTS); |
| //reg16 |= 0xf900; |
| pci_write_config16(dev, PSTS, reg16); |
| |
| reg16 = pci_read_config16(dev, SECSTS); |
| // reg16 |= 0xf900; |
| pci_write_config16(dev, SECSTS, reg16); |
| } |
| |
| 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, |
| .ops_pci = &pci_dev_ops_pci, |
| }; |
| |
| /* Desktop */ |
| /* 82801BA/CA/DB/EB/ER/FB/FR/FW/FRW/GB/GR/GDH/HB/IB/6300ESB/i3100 */ |
| static const struct pci_driver i82801g_pci __pci_driver = { |
| .ops = &device_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = 0x244e, |
| }; |
| |
| /* Mobile / Ultra Mobile */ |
| /* 82801BAM/CAM/DBL/DBM/FBM/GBM/GHM/GU/HBM/HEM */ |
| static const struct pci_driver i82801gmu_pci __pci_driver = { |
| .ops = &device_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = 0x2448, |
| }; |