- Moved hlt() to it's own header.
[coreboot.git] / src / southbridge / amd / amd8111 / amd8111.c
1 #include <console/console.h>
2 #include <device/device.h>
3 #include <device/pci.h>
4 #include <device/pci_ids.h>
5 #include <device/chip.h>
6 #include "amd8111.h"
7
8 void amd8111_enable(device_t dev)
9 {
10         device_t lpc_dev;
11         device_t bus_dev;
12         unsigned index;
13         uint16_t reg_old, reg;
14
15         /* See if we are on the behind the amd8111 pci bridge */
16         bus_dev = dev->bus->dev;
17         if ((bus_dev->vendor == PCI_VENDOR_ID_AMD) && 
18                 (bus_dev->device == PCI_DEVICE_ID_AMD_8111_PCI)) {
19                 unsigned devfn;
20                 devfn = bus_dev->path.u.pci.devfn + (1 << 3);
21                 lpc_dev = dev_find_slot(bus_dev->bus->secondary, devfn);
22                 index = ((dev->path.u.pci.devfn & ~7) >> 3) + 8;
23         } else {
24                 unsigned devfn;
25                 devfn = (dev->path.u.pci.devfn) & ~7;
26                 lpc_dev = dev_find_slot(dev->bus->secondary, devfn);
27                 index = dev->path.u.pci.devfn & 7;
28         }
29         if ((!lpc_dev) || (index >= 16)) {
30                 return;
31         }
32         if ((lpc_dev->vendor != PCI_VENDOR_ID_AMD) ||
33                 (lpc_dev->device != PCI_DEVICE_ID_AMD_8111_ISA)) {
34                 uint32_t id;
35                 id = pci_read_config32(lpc_dev, PCI_VENDOR_ID);
36                 if (id != (PCI_VENDOR_ID_AMD | (PCI_DEVICE_ID_AMD_8111_ISA << 16))) {
37                         return;
38                 }
39         }
40         reg = reg_old = pci_read_config16(lpc_dev, 0x48);
41         reg &= ~(1 << index);
42         if (dev->enable) {
43                 reg |= (1 << index);
44         }
45         if (reg != reg_old) {
46                 pci_write_config16(lpc_dev, 0x48, reg);
47         }
48 }
49
50 struct chip_control southbridge_amd_amd8111_control = {
51         .name       = "AMD 8111",
52         .enable_dev = amd8111_enable,
53 };