1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #include <device/device.h>
4 #include <device/pci.h>
5 #include <device/pci_ops.h>
6 #include <device/pci_ids.h>
7 #include "i82801jx.h"
8
pci_init(struct device * dev)9 static void pci_init(struct device *dev)
10 {
11 u16 reg16;
12
13 /* This device has no interrupt */
14 pci_write_config8(dev, PCI_INTERRUPT_LINE, 0xff);
15
16 /* Master Latency Count must be set to 0x04! */
17 pci_update_config8(dev, D30F0_SMLT, 0x07, 0x04 << 3);
18
19 /* Clear errors in status registers. FIXME: Do something? */
20 reg16 = pci_read_config16(dev, PCI_STATUS);
21 //reg16 |= 0xf900;
22 pci_write_config16(dev, PCI_STATUS, reg16);
23
24 reg16 = pci_read_config16(dev, PCI_SEC_STATUS);
25 // reg16 |= 0xf900;
26 pci_write_config16(dev, PCI_SEC_STATUS, reg16);
27 }
28
29 static struct device_operations device_ops = {
30 .read_resources = pci_bus_read_resources,
31 .set_resources = pci_dev_set_resources,
32 .enable_resources = pci_bus_enable_resources,
33 .init = pci_init,
34 .scan_bus = pci_scan_bridge,
35 .reset_bus = pci_bus_reset,
36 .ops_pci = &pci_dev_ops_pci,
37 };
38
39 static const unsigned short pci_device_ids[] = {
40 0x244e,
41 0
42 };
43
44 static const struct pci_driver ich10_pci __pci_driver = {
45 .ops = &device_ops,
46 .vendor = PCI_VID_INTEL,
47 .devices = pci_device_ids,
48 };
49