projects / deliverable / linux.git / blame
| 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 | } |