diff options
Diffstat (limited to 'arch/x86/mm/k8topology_64.c')
| -rw-r--r-- | arch/x86/mm/k8topology_64.c | 237 | 
1 files changed, 0 insertions, 237 deletions
diff --git a/arch/x86/mm/k8topology_64.c b/arch/x86/mm/k8topology_64.c deleted file mode 100644 index 804a3b6c6e1..00000000000 --- a/arch/x86/mm/k8topology_64.c +++ /dev/null @@ -1,237 +0,0 @@ -/* - * AMD K8 NUMA support. - * Discover the memory map and associated nodes. - * - * This version reads it directly from the K8 northbridge. - * - * Copyright 2002,2003 Andi Kleen, SuSE Labs. - */ -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/string.h> -#include <linux/module.h> -#include <linux/nodemask.h> -#include <linux/memblock.h> - -#include <asm/io.h> -#include <linux/pci_ids.h> -#include <linux/acpi.h> -#include <asm/types.h> -#include <asm/mmzone.h> -#include <asm/proto.h> -#include <asm/e820.h> -#include <asm/pci-direct.h> -#include <asm/numa.h> -#include <asm/mpspec.h> -#include <asm/apic.h> -#include <asm/amd_nb.h> - -static struct bootnode __initdata nodes[8]; -static nodemask_t __initdata nodes_parsed = NODE_MASK_NONE; - -static __init int find_northbridge(void) -{ -	int num; - -	for (num = 0; num < 32; num++) { -		u32 header; - -		header = read_pci_config(0, num, 0, 0x00); -		if (header != (PCI_VENDOR_ID_AMD | (0x1100<<16)) && -			header != (PCI_VENDOR_ID_AMD | (0x1200<<16)) && -			header != (PCI_VENDOR_ID_AMD | (0x1300<<16))) -			continue; - -		header = read_pci_config(0, num, 1, 0x00); -		if (header != (PCI_VENDOR_ID_AMD | (0x1101<<16)) && -			header != (PCI_VENDOR_ID_AMD | (0x1201<<16)) && -			header != (PCI_VENDOR_ID_AMD | (0x1301<<16))) -			continue; -		return num; -	} - -	return -1; -} - -static __init void early_get_boot_cpu_id(void) -{ -	/* -	 * need to get the APIC ID of the BSP so can use that to -	 * create apicid_to_node in k8_scan_nodes() -	 */ -#ifdef CONFIG_X86_MPPARSE -	/* -	 * get boot-time SMP configuration: -	 */ -	if (smp_found_config) -		early_get_smp_config(); -#endif -	early_init_lapic_mapping(); -} - -int __init k8_get_nodes(struct bootnode *physnodes) -{ -	int i; -	int ret = 0; - -	for_each_node_mask(i, nodes_parsed) { -		physnodes[ret].start = nodes[i].start; -		physnodes[ret].end = nodes[i].end; -		ret++; -	} -	return ret; -} - -int __init k8_numa_init(unsigned long start_pfn, unsigned long end_pfn) -{ -	unsigned long start = PFN_PHYS(start_pfn); -	unsigned long end = PFN_PHYS(end_pfn); -	unsigned numnodes; -	unsigned long prevbase; -	int i, nb, found = 0; -	u32 nodeid, reg; - -	if (!early_pci_allowed()) -		return -1; - -	nb = find_northbridge(); -	if (nb < 0) -		return nb; - -	pr_info("Scanning NUMA topology in Northbridge %d\n", nb); - -	reg = read_pci_config(0, nb, 0, 0x60); -	numnodes = ((reg >> 4) & 0xF) + 1; -	if (numnodes <= 1) -		return -1; - -	pr_info("Number of physical nodes %d\n", numnodes); - -	prevbase = 0; -	for (i = 0; i < 8; i++) { -		unsigned long base, limit; - -		base = read_pci_config(0, nb, 1, 0x40 + i*8); -		limit = read_pci_config(0, nb, 1, 0x44 + i*8); - -		nodeid = limit & 7; -		if ((base & 3) == 0) { -			if (i < numnodes) -				pr_info("Skipping disabled node %d\n", i); -			continue; -		} -		if (nodeid >= numnodes) { -			pr_info("Ignoring excess node %d (%lx:%lx)\n", nodeid, -				base, limit); -			continue; -		} - -		if (!limit) { -			pr_info("Skipping node entry %d (base %lx)\n", -				i, base); -			continue; -		} -		if ((base >> 8) & 3 || (limit >> 8) & 3) { -			pr_err("Node %d using interleaving mode %lx/%lx\n", -			       nodeid, (base >> 8) & 3, (limit >> 8) & 3); -			return -1; -		} -		if (node_isset(nodeid, nodes_parsed)) { -			pr_info("Node %d already present, skipping\n", -				nodeid); -			continue; -		} - -		limit >>= 16; -		limit <<= 24; -		limit |= (1<<24)-1; -		limit++; - -		if (limit > end) -			limit = end; -		if (limit <= base) -			continue; - -		base >>= 16; -		base <<= 24; - -		if (base < start) -			base = start; -		if (limit > end) -			limit = end; -		if (limit == base) { -			pr_err("Empty node %d\n", nodeid); -			continue; -		} -		if (limit < base) { -			pr_err("Node %d bogus settings %lx-%lx.\n", -			       nodeid, base, limit); -			continue; -		} - -		/* Could sort here, but pun for now. Should not happen anyroads. */ -		if (prevbase > base) { -			pr_err("Node map not sorted %lx,%lx\n", -			       prevbase, base); -			return -1; -		} - -		pr_info("Node %d MemBase %016lx Limit %016lx\n", -			nodeid, base, limit); - -		found++; - -		nodes[nodeid].start = base; -		nodes[nodeid].end = limit; - -		prevbase = base; - -		node_set(nodeid, nodes_parsed); -	} - -	if (!found) -		return -1; -	return 0; -} - -int __init k8_scan_nodes(void) -{ -	unsigned int bits; -	unsigned int cores; -	unsigned int apicid_base; -	int i; - -	BUG_ON(nodes_empty(nodes_parsed)); -	node_possible_map = nodes_parsed; -	memnode_shift = compute_hash_shift(nodes, 8, NULL); -	if (memnode_shift < 0) { -		pr_err("No NUMA node hash function found. Contact maintainer\n"); -		return -1; -	} -	pr_info("Using node hash shift of %d\n", memnode_shift); - -	/* use the coreid bits from early_identify_cpu */ -	bits = boot_cpu_data.x86_coreid_bits; -	cores = (1<<bits); -	apicid_base = 0; -	/* get the APIC ID of the BSP early for systems with apicid lifting */ -	early_get_boot_cpu_id(); -	if (boot_cpu_physical_apicid > 0) { -		pr_info("BSP APIC ID: %02x\n", boot_cpu_physical_apicid); -		apicid_base = boot_cpu_physical_apicid; -	} - -	for_each_node_mask(i, node_possible_map) { -		int j; - -		memblock_x86_register_active_regions(i, -				nodes[i].start >> PAGE_SHIFT, -				nodes[i].end >> PAGE_SHIFT); -		for (j = apicid_base; j < cores + apicid_base; j++) -			apicid_to_node[(i << bits) + j] = i; -		setup_node_bootmem(i, nodes[i].start, nodes[i].end); -	} - -	numa_init_array(); -	return 0; -}  | 
