mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 06:18:54 +00:00
a626b46e17
* 'x86-bootmem-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (30 commits) early_res: Need to save the allocation name in drop_range_partial() sparsemem: Fix compilation on PowerPC early_res: Add free_early_partial() x86: Fix non-bootmem compilation on PowerPC core: Move early_res from arch/x86 to kernel/ x86: Add find_fw_memmap_area Move round_up/down to kernel.h x86: Make 32bit support NO_BOOTMEM early_res: Enhance check_and_double_early_res x86: Move back find_e820_area to e820.c x86: Add find_early_area_size x86: Separate early_res related code from e820.c x86: Move bios page reserve early to head32/64.c sparsemem: Put mem map for one node together. sparsemem: Put usemap for one node together x86: Make 64 bit use early_res instead of bootmem before slab x86: Only call dma32_reserve_bootmem 64bit !CONFIG_NUMA x86: Make early_node_mem get mem > 4 GB if possible x86: Dynamically increase early_res array size x86: Introduce max_early_res and early_res_count ...
102 lines
1.9 KiB
C
102 lines
1.9 KiB
C
#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/range.h>
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#include "bus_numa.h"
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int pci_root_num;
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struct pci_root_info pci_root_info[PCI_ROOT_NR];
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void x86_pci_root_bus_res_quirks(struct pci_bus *b)
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{
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int i;
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int j;
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struct pci_root_info *info;
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/* don't go for it if _CRS is used already */
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if (b->resource[0] != &ioport_resource ||
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b->resource[1] != &iomem_resource)
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return;
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if (!pci_root_num)
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return;
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for (i = 0; i < pci_root_num; i++) {
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if (pci_root_info[i].bus_min == b->number)
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break;
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}
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if (i == pci_root_num)
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return;
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printk(KERN_DEBUG "PCI: peer root bus %02x res updated from pci conf\n",
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b->number);
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pci_bus_remove_resources(b);
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info = &pci_root_info[i];
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for (j = 0; j < info->res_num; j++) {
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struct resource *res;
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struct resource *root;
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res = &info->res[j];
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pci_bus_add_resource(b, res, 0);
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if (res->flags & IORESOURCE_IO)
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root = &ioport_resource;
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else
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root = &iomem_resource;
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insert_resource(root, res);
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}
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}
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void __devinit update_res(struct pci_root_info *info, resource_size_t start,
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resource_size_t end, unsigned long flags, int merge)
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{
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int i;
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struct resource *res;
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if (start > end)
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return;
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if (start == MAX_RESOURCE)
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return;
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if (!merge)
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goto addit;
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/* try to merge it with old one */
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for (i = 0; i < info->res_num; i++) {
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resource_size_t final_start, final_end;
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resource_size_t common_start, common_end;
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res = &info->res[i];
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if (res->flags != flags)
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continue;
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common_start = max(res->start, start);
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common_end = min(res->end, end);
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if (common_start > common_end + 1)
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continue;
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final_start = min(res->start, start);
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final_end = max(res->end, end);
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res->start = final_start;
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res->end = final_end;
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return;
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}
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addit:
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/* need to add that */
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if (info->res_num >= RES_NUM)
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return;
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res = &info->res[info->res_num];
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res->name = info->name;
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res->flags = flags;
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res->start = start;
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res->end = end;
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res->child = NULL;
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info->res_num++;
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}
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