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3ad0b02e VP |
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; | |
2f102607 | 19 | unsigned int enabled; |
3ad0b02e VP |
20 | }; |
21 | ||
22 | /* | |
23 | * The i5000 chip-set has the same hooks as the i7300 | |
2f102607 LB |
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. | |
3ad0b02e | 27 | */ |
3ad0b02e VP |
28 | |
29 | static const struct fbd_ioat fbd_ioat_list[] = { | |
2f102607 LB |
30 | {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_CNB, 1}, |
31 | {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT, 0}, | |
3ad0b02e VP |
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) }, | |
3ad0b02e | 38 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5000_ERR) }, |
3ad0b02e VP |
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, | |
2f102607 LB |
44 | struct pci_dev **ioat_dev, |
45 | int enable_all) | |
3ad0b02e VP |
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) { | |
2f102607 LB |
70 | if (!(fbd_ioat_list[i].enabled || enable_all)) |
71 | continue; | |
3ad0b02e VP |
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 |