Commit | Line | Data |
---|---|---|
67f241f4 YL |
1 | #include <linux/init.h> |
2 | #include <linux/pci.h> | |
9ad3f2c7 | 3 | #include <linux/range.h> |
67f241f4 YL |
4 | |
5 | #include "bus_numa.h" | |
6 | ||
7 | int pci_root_num; | |
8 | struct pci_root_info pci_root_info[PCI_ROOT_NR]; | |
67f241f4 YL |
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 | ||
67f241f4 YL |
24 | for (i = 0; i < pci_root_num; i++) { |
25 | if (pci_root_info[i].bus_min == b->number) | |
26 | break; | |
27 | } | |
28 | ||
29 | if (i == pci_root_num) | |
30 | return; | |
31 | ||
32 | printk(KERN_DEBUG "PCI: peer root bus %02x res updated from pci conf\n", | |
33 | b->number); | |
34 | ||
2fe2abf8 | 35 | pci_bus_remove_resources(b); |
67f241f4 YL |
36 | info = &pci_root_info[i]; |
37 | for (j = 0; j < info->res_num; j++) { | |
38 | struct resource *res; | |
39 | struct resource *root; | |
40 | ||
41 | res = &info->res[j]; | |
2fe2abf8 | 42 | pci_bus_add_resource(b, res, 0); |
67f241f4 YL |
43 | if (res->flags & IORESOURCE_IO) |
44 | root = &ioport_resource; | |
45 | else | |
46 | root = &iomem_resource; | |
47 | insert_resource(root, res); | |
48 | } | |
49 | } | |
50 | ||
b74fd238 YL |
51 | void __devinit update_res(struct pci_root_info *info, resource_size_t start, |
52 | resource_size_t end, unsigned long flags, int merge) | |
67f241f4 YL |
53 | { |
54 | int i; | |
55 | struct resource *res; | |
56 | ||
57 | if (start > end) | |
58 | return; | |
59 | ||
9ad3f2c7 YL |
60 | if (start == MAX_RESOURCE) |
61 | return; | |
62 | ||
67f241f4 YL |
63 | if (!merge) |
64 | goto addit; | |
65 | ||
66 | /* try to merge it with old one */ | |
67 | for (i = 0; i < info->res_num; i++) { | |
b74fd238 YL |
68 | resource_size_t final_start, final_end; |
69 | resource_size_t common_start, common_end; | |
67f241f4 YL |
70 | |
71 | res = &info->res[i]; | |
72 | if (res->flags != flags) | |
73 | continue; | |
74 | ||
b74fd238 YL |
75 | common_start = max(res->start, start); |
76 | common_end = min(res->end, end); | |
67f241f4 YL |
77 | if (common_start > common_end + 1) |
78 | continue; | |
79 | ||
b74fd238 YL |
80 | final_start = min(res->start, start); |
81 | final_end = max(res->end, end); | |
67f241f4 YL |
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 | } |