summaryrefslogtreecommitdiff
path: root/arch/mips/loongson/loongson-3/numa.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/loongson/loongson-3/numa.c')
-rw-r--r--arch/mips/loongson/loongson-3/numa.c296
1 files changed, 0 insertions, 296 deletions
diff --git a/arch/mips/loongson/loongson-3/numa.c b/arch/mips/loongson/loongson-3/numa.c
deleted file mode 100644
index 12d14ed48..000000000
--- a/arch/mips/loongson/loongson-3/numa.c
+++ /dev/null
@@ -1,296 +0,0 @@
-/*
- * Copyright (C) 2010 Loongson Inc. & Lemote Inc. &
- * Insititute of Computing Technology
- * Author: Xiang Gao, gaoxiang@ict.ac.cn
- * Huacai Chen, chenhc@lemote.com
- * Xiaofu Meng, Shuangshuang Zhang
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- */
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/mmzone.h>
-#include <linux/module.h>
-#include <linux/nodemask.h>
-#include <linux/swap.h>
-#include <linux/memblock.h>
-#include <linux/bootmem.h>
-#include <linux/pfn.h>
-#include <linux/highmem.h>
-#include <asm/page.h>
-#include <asm/pgalloc.h>
-#include <asm/sections.h>
-#include <linux/irq.h>
-#include <asm/bootinfo.h>
-#include <asm/mc146818-time.h>
-#include <asm/time.h>
-#include <asm/wbflush.h>
-#include <boot_param.h>
-
-static struct node_data prealloc__node_data[MAX_NUMNODES];
-unsigned char __node_distances[MAX_NUMNODES][MAX_NUMNODES];
-EXPORT_SYMBOL(__node_distances);
-struct node_data *__node_data[MAX_NUMNODES];
-EXPORT_SYMBOL(__node_data);
-
-static void enable_lpa(void)
-{
- unsigned long value;
-
- value = __read_32bit_c0_register($16, 3);
- value |= 0x00000080;
- __write_32bit_c0_register($16, 3, value);
- value = __read_32bit_c0_register($16, 3);
- pr_info("CP0_Config3: CP0 16.3 (0x%lx)\n", value);
-
- value = __read_32bit_c0_register($5, 1);
- value |= 0x20000000;
- __write_32bit_c0_register($5, 1, value);
- value = __read_32bit_c0_register($5, 1);
- pr_info("CP0_PageGrain: CP0 5.1 (0x%lx)\n", value);
-}
-
-static void cpu_node_probe(void)
-{
- int i;
-
- nodes_clear(node_possible_map);
- nodes_clear(node_online_map);
- for (i = 0; i < loongson_sysconf.nr_nodes; i++) {
- node_set_state(num_online_nodes(), N_POSSIBLE);
- node_set_online(num_online_nodes());
- }
-
- pr_info("NUMA: Discovered %d cpus on %d nodes\n",
- loongson_sysconf.nr_cpus, num_online_nodes());
-}
-
-static int __init compute_node_distance(int row, int col)
-{
- int package_row = row * loongson_sysconf.cores_per_node /
- loongson_sysconf.cores_per_package;
- int package_col = col * loongson_sysconf.cores_per_node /
- loongson_sysconf.cores_per_package;
-
- if (col == row)
- return 0;
- else if (package_row == package_col)
- return 40;
- else
- return 100;
-}
-
-static void __init init_topology_matrix(void)
-{
- int row, col;
-
- for (row = 0; row < MAX_NUMNODES; row++)
- for (col = 0; col < MAX_NUMNODES; col++)
- __node_distances[row][col] = -1;
-
- for_each_online_node(row) {
- for_each_online_node(col) {
- __node_distances[row][col] =
- compute_node_distance(row, col);
- }
- }
-}
-
-static unsigned long nid_to_addroffset(unsigned int nid)
-{
- unsigned long result;
- switch (nid) {
- case 0:
- default:
- result = NODE0_ADDRSPACE_OFFSET;
- break;
- case 1:
- result = NODE1_ADDRSPACE_OFFSET;
- break;
- case 2:
- result = NODE2_ADDRSPACE_OFFSET;
- break;
- case 3:
- result = NODE3_ADDRSPACE_OFFSET;
- break;
- }
- return result;
-}
-
-static void __init szmem(unsigned int node)
-{
- u32 i, mem_type;
- static unsigned long num_physpages = 0;
- u64 node_id, node_psize, start_pfn, end_pfn, mem_start, mem_size;
-
- /* Parse memory information and activate */
- for (i = 0; i < loongson_memmap->nr_map; i++) {
- node_id = loongson_memmap->map[i].node_id;
- if (node_id != node)
- continue;
-
- mem_type = loongson_memmap->map[i].mem_type;
- mem_size = loongson_memmap->map[i].mem_size;
- mem_start = loongson_memmap->map[i].mem_start;
-
- switch (mem_type) {
- case SYSTEM_RAM_LOW:
- start_pfn = ((node_id << 44) + mem_start) >> PAGE_SHIFT;
- node_psize = (mem_size << 20) >> PAGE_SHIFT;
- end_pfn = start_pfn + node_psize;
- num_physpages += node_psize;
- pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx MB\n",
- (u32)node_id, mem_type, mem_start, mem_size);
- pr_info(" start_pfn:0x%llx, end_pfn:0x%llx, num_physpages:0x%lx\n",
- start_pfn, end_pfn, num_physpages);
- add_memory_region((node_id << 44) + mem_start,
- (u64)mem_size << 20, BOOT_MEM_RAM);
- memblock_add_node(PFN_PHYS(start_pfn),
- PFN_PHYS(end_pfn - start_pfn), node);
- break;
- case SYSTEM_RAM_HIGH:
- start_pfn = ((node_id << 44) + mem_start) >> PAGE_SHIFT;
- node_psize = (mem_size << 20) >> PAGE_SHIFT;
- end_pfn = start_pfn + node_psize;
- num_physpages += node_psize;
- pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx MB\n",
- (u32)node_id, mem_type, mem_start, mem_size);
- pr_info(" start_pfn:0x%llx, end_pfn:0x%llx, num_physpages:0x%lx\n",
- start_pfn, end_pfn, num_physpages);
- add_memory_region((node_id << 44) + mem_start,
- (u64)mem_size << 20, BOOT_MEM_RAM);
- memblock_add_node(PFN_PHYS(start_pfn),
- PFN_PHYS(end_pfn - start_pfn), node);
- break;
- case MEM_RESERVED:
- pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx MB\n",
- (u32)node_id, mem_type, mem_start, mem_size);
- add_memory_region((node_id << 44) + mem_start,
- (u64)mem_size << 20, BOOT_MEM_RESERVED);
- memblock_reserve(((node_id << 44) + mem_start),
- mem_size << 20);
- break;
- }
- }
-}
-
-static void __init node_mem_init(unsigned int node)
-{
- unsigned long bootmap_size;
- unsigned long node_addrspace_offset;
- unsigned long start_pfn, end_pfn, freepfn;
-
- node_addrspace_offset = nid_to_addroffset(node);
- pr_info("Node%d's addrspace_offset is 0x%lx\n",
- node, node_addrspace_offset);
-
- get_pfn_range_for_nid(node, &start_pfn, &end_pfn);
- freepfn = start_pfn;
- if (node == 0)
- freepfn = PFN_UP(__pa_symbol(&_end)); /* kernel end address */
- pr_info("Node%d: start_pfn=0x%lx, end_pfn=0x%lx, freepfn=0x%lx\n",
- node, start_pfn, end_pfn, freepfn);
-
- __node_data[node] = prealloc__node_data + node;
-
- NODE_DATA(node)->bdata = &bootmem_node_data[node];
- NODE_DATA(node)->node_start_pfn = start_pfn;
- NODE_DATA(node)->node_spanned_pages = end_pfn - start_pfn;
-
- bootmap_size = init_bootmem_node(NODE_DATA(node), freepfn,
- start_pfn, end_pfn);
- free_bootmem_with_active_regions(node, end_pfn);
- if (node == 0) /* used by finalize_initrd() */
- max_low_pfn = end_pfn;
-
- /* This is reserved for the kernel and bdata->node_bootmem_map */
- reserve_bootmem_node(NODE_DATA(node), start_pfn << PAGE_SHIFT,
- ((freepfn - start_pfn) << PAGE_SHIFT) + bootmap_size,
- BOOTMEM_DEFAULT);
-
- if (node == 0 && node_end_pfn(0) >= (0xffffffff >> PAGE_SHIFT)) {
- /* Reserve 0xff800000~0xffffffff for RS780E integrated GPU */
- reserve_bootmem_node(NODE_DATA(node),
- (node_addrspace_offset | 0xff800000),
- 8 << 20, BOOTMEM_DEFAULT);
- }
-
- sparse_memory_present_with_active_regions(node);
-}
-
-static __init void prom_meminit(void)
-{
- unsigned int node, cpu, active_cpu = 0;
-
- cpu_node_probe();
- init_topology_matrix();
-
- for (node = 0; node < loongson_sysconf.nr_nodes; node++) {
- if (node_online(node)) {
- szmem(node);
- node_mem_init(node);
- cpumask_clear(&__node_data[(node)]->cpumask);
- }
- }
- for (cpu = 0; cpu < loongson_sysconf.nr_cpus; cpu++) {
- node = cpu / loongson_sysconf.cores_per_node;
- if (node >= num_online_nodes())
- node = 0;
-
- if (loongson_sysconf.reserved_cpus_mask & (1<<cpu))
- continue;
-
- cpumask_set_cpu(active_cpu, &__node_data[(node)]->cpumask);
- pr_info("NUMA: set cpumask cpu %d on node %d\n", active_cpu, node);
-
- active_cpu++;
- }
-}
-
-void __init paging_init(void)
-{
- unsigned node;
- unsigned long zones_size[MAX_NR_ZONES] = {0, };
-
- pagetable_init();
-
- for_each_online_node(node) {
- unsigned long start_pfn, end_pfn;
-
- get_pfn_range_for_nid(node, &start_pfn, &end_pfn);
-
- if (end_pfn > max_low_pfn)
- max_low_pfn = end_pfn;
- }
-#ifdef CONFIG_ZONE_DMA32
- zones_size[ZONE_DMA32] = MAX_DMA32_PFN;
-#endif
- zones_size[ZONE_NORMAL] = max_low_pfn;
- free_area_init_nodes(zones_size);
-}
-
-void __init mem_init(void)
-{
- high_memory = (void *) __va(get_num_physpages() << PAGE_SHIFT);
- free_all_bootmem();
- setup_zero_pages(); /* This comes from node 0 */
- mem_init_print_info(NULL);
-}
-
-/* All PCI device belongs to logical Node-0 */
-int pcibus_to_node(struct pci_bus *bus)
-{
- return 0;
-}
-EXPORT_SYMBOL(pcibus_to_node);
-
-void __init prom_init_numa_memory(void)
-{
- enable_lpa();
- prom_meminit();
-}
-EXPORT_SYMBOL(prom_init_numa_memory);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-11 21:45:56 +0000