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1 | |
2 | #ifndef I7300_IDLE_H |
3 | #define I7300_IDLE_H |
4 | |
5 | #include <linux/pci.h> |
6 | |
7 | /* |
8 | * I/O AT controls (PCI bus 0 device 8 function 0) |
9 | * DIMM controls (PCI bus 0 device 16 function 1) |
10 | */ |
11 | #define IOAT_BUS 0 |
12 | #define IOAT_DEVFN PCI_DEVFN(8, 0) |
13 | #define MEMCTL_BUS 0 |
14 | #define MEMCTL_DEVFN PCI_DEVFN(16, 1) |
15 | |
16 | struct fbd_ioat { |
17 | unsigned int vendor; |
18 | unsigned int ioat_dev; |
19 | unsigned int enabled; |
20 | }; |
21 | |
22 | /* |
23 | * The i5000 chip-set has the same hooks as the i7300 |
24 | * but it is not enabled by default and must be manually |
25 | * manually enabled with "forceload=1" because it is |
26 | * only lightly validated. |
27 | */ |
28 | |
29 | static const struct fbd_ioat fbd_ioat_list[] = { |
30 | {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_CNB, 1}, |
31 | {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT, 0}, |
32 | {0, 0} |
33 | }; |
34 | |
35 | /* table of devices that work with this driver */ |
36 | static const struct pci_device_id pci_tbl[] = { |
37 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_FBD_CNB) }, |
38 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5000_ERR) }, |
39 | { } /* Terminating entry */ |
40 | }; |
41 | |
42 | /* Check for known platforms with I/O-AT */ |
43 | static inline int i7300_idle_platform_probe(struct pci_dev **fbd_dev, |
44 | struct pci_dev **ioat_dev, |
45 | int enable_all) |
46 | { |
47 | int i; |
48 | struct pci_dev *memdev, *dmadev; |
49 | |
50 | memdev = pci_get_bus_and_slot(MEMCTL_BUS, MEMCTL_DEVFN); |
51 | if (!memdev) |
52 | return -ENODEV; |
53 | |
54 | for (i = 0; pci_tbl[i].vendor != 0; i++) { |
55 | if (memdev->vendor == pci_tbl[i].vendor && |
56 | memdev->device == pci_tbl[i].device) { |
57 | break; |
58 | } |
59 | } |
60 | if (pci_tbl[i].vendor == 0) |
61 | return -ENODEV; |
62 | |
63 | dmadev = pci_get_bus_and_slot(IOAT_BUS, IOAT_DEVFN); |
64 | if (!dmadev) |
65 | return -ENODEV; |
66 | |
67 | for (i = 0; fbd_ioat_list[i].vendor != 0; i++) { |
68 | if (dmadev->vendor == fbd_ioat_list[i].vendor && |
69 | dmadev->device == fbd_ioat_list[i].ioat_dev) { |
70 | if (!(fbd_ioat_list[i].enabled || enable_all)) |
71 | continue; |
72 | if (fbd_dev) |
73 | *fbd_dev = memdev; |
74 | if (ioat_dev) |
75 | *ioat_dev = dmadev; |
76 | |
77 | return 0; |
78 | } |
79 | } |
80 | return -ENODEV; |
81 | } |
82 | |
83 | #endif |
84 |
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