Commit | Line | Data |
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67f241f4 YL |
1 | #include <linux/init.h> |
2 | #include <linux/pci.h> | |
3 | ||
4 | #include "bus_numa.h" | |
5 | ||
6 | int pci_root_num; | |
7 | struct pci_root_info pci_root_info[PCI_ROOT_NR]; | |
8 | int found_all_numa_early; | |
9 | ||
10 | void x86_pci_root_bus_res_quirks(struct pci_bus *b) | |
11 | { | |
12 | int i; | |
13 | int j; | |
14 | struct pci_root_info *info; | |
15 | ||
16 | /* don't go for it if _CRS is used already */ | |
17 | if (b->resource[0] != &ioport_resource || | |
18 | b->resource[1] != &iomem_resource) | |
19 | return; | |
20 | ||
21 | if (!pci_root_num) | |
22 | return; | |
23 | ||
24 | /* for amd, if only one root bus, don't need to do anything */ | |
25 | if (pci_root_num < 2 && found_all_numa_early) | |
26 | return; | |
27 | ||
28 | for (i = 0; i < pci_root_num; i++) { | |
29 | if (pci_root_info[i].bus_min == b->number) | |
30 | break; | |
31 | } | |
32 | ||
33 | if (i == pci_root_num) | |
34 | return; | |
35 | ||
36 | printk(KERN_DEBUG "PCI: peer root bus %02x res updated from pci conf\n", | |
37 | b->number); | |
38 | ||
39 | info = &pci_root_info[i]; | |
40 | for (j = 0; j < info->res_num; j++) { | |
41 | struct resource *res; | |
42 | struct resource *root; | |
43 | ||
44 | res = &info->res[j]; | |
45 | b->resource[j] = res; | |
46 | if (res->flags & IORESOURCE_IO) | |
47 | root = &ioport_resource; | |
48 | else | |
49 | root = &iomem_resource; | |
50 | insert_resource(root, res); | |
51 | } | |
52 | } | |
53 | ||
57148688 | 54 | void __devinit update_res(struct pci_root_info *info, size_t start, |
67f241f4 YL |
55 | size_t end, unsigned long flags, int merge) |
56 | { | |
57 | int i; | |
58 | struct resource *res; | |
59 | ||
60 | if (start > end) | |
61 | return; | |
62 | ||
63 | if (!merge) | |
64 | goto addit; | |
65 | ||
66 | /* try to merge it with old one */ | |
67 | for (i = 0; i < info->res_num; i++) { | |
68 | size_t final_start, final_end; | |
69 | size_t common_start, common_end; | |
70 | ||
71 | res = &info->res[i]; | |
72 | if (res->flags != flags) | |
73 | continue; | |
74 | ||
75 | common_start = max((size_t)res->start, start); | |
76 | common_end = min((size_t)res->end, end); | |
77 | if (common_start > common_end + 1) | |
78 | continue; | |
79 | ||
80 | final_start = min((size_t)res->start, start); | |
81 | final_end = max((size_t)res->end, end); | |
82 | ||
83 | res->start = final_start; | |
84 | res->end = final_end; | |
85 | return; | |
86 | } | |
87 | ||
88 | addit: | |
89 | ||
90 | /* need to add that */ | |
91 | if (info->res_num >= RES_NUM) | |
92 | return; | |
93 | ||
94 | res = &info->res[info->res_num]; | |
95 | res->name = info->name; | |
96 | res->flags = flags; | |
97 | res->start = start; | |
98 | res->end = end; | |
99 | res->child = NULL; | |
100 | info->res_num++; | |
101 | } |