Commit 152442a6 authored by Anton Blanchard's avatar Anton Blanchard

ppc64: numa updates

parent e386e6e0
......@@ -522,7 +522,7 @@ void __init mem_init(void)
{
int nid;
for (nid = 0; nid < MAX_NUMNODES; nid++) {
for (nid = 0; nid < numnodes; nid++) {
if (numa_node_exists[nid]) {
printk("freeing bootmem node %x\n", nid);
totalram_pages +=
......
/*
* NUMA support
* pSeries NUMA support
*
* Copyright (C) 2002 Anton Blanchard <anton@au.ibm.com>, IBM
*
......@@ -15,10 +15,10 @@
#include <linux/mmzone.h>
#include <asm/lmb.h>
#if 0
#define dbg(format, arg...) udbg_printf(format, arg)
#if 1
#define dbg(args...) udbg_printf(args)
#else
#define dbg(format, arg...)
#define dbg(args...)
#endif
int numa_cpu_lookup_table[NR_CPUS] = { [ 0 ... (NR_CPUS - 1)] = -1};
......@@ -31,8 +31,137 @@ bootmem_data_t plat_node_bdata[MAX_NUMNODES];
static int __init parse_numa_properties(void)
{
/* XXX implement */
struct device_node *cpu;
struct device_node *memory;
int *cpu_associativity;
int *memory_associativity;
int depth;
int max_domain = 0;
cpu = find_type_devices("cpu");
if (!cpu)
return -1;
memory = find_type_devices("memory");
if (!memory)
return -1;
cpu_associativity = (int *)get_property(cpu, "ibm,associativity", NULL);
if (!cpu_associativity)
return -1;
memory_associativity = (int *)get_property(memory, "ibm,associativity",
NULL);
if (!memory_associativity)
return -1;
/* find common depth */
if (cpu_associativity[0] < memory_associativity[0])
depth = cpu_associativity[0];
else
depth = memory_associativity[0];
for (cpu = find_type_devices("cpu"); cpu; cpu = cpu->next) {
int *tmp;
int cpu_nr, numa_domain;
tmp = (int *)get_property(cpu, "reg", NULL);
if (!tmp)
continue;
cpu_nr = *tmp;
tmp = (int *)get_property(cpu, "ibm,associativity",
NULL);
if (!tmp)
continue;
numa_domain = tmp[depth];
/* FIXME */
if (numa_domain == 0xffff) {
dbg("cpu %d has no numa doman\n", cpu_nr);
numa_domain = 0;
}
if (numa_domain >= MAX_NUMNODES)
BUG();
if (max_domain < numa_domain)
max_domain = numa_domain;
numa_cpu_lookup_table[cpu_nr] = numa_domain;
dbg("cpu %d maps to domain %d\n", cpu_nr, numa_domain);
}
for (memory = find_type_devices("memory"); memory;
memory = memory->next) {
int *tmp1, *tmp2;
unsigned long i;
unsigned long start = 0;
unsigned long size = 0;
int numa_domain;
int ranges;
tmp1 = (int *)get_property(memory, "reg", NULL);
if (!tmp1)
continue;
ranges = memory->n_addrs;
new_range:
i = prom_n_size_cells(memory);
while (i--) {
start = (start << 32) | *tmp1;
tmp1++;
}
i = prom_n_size_cells(memory);
while (i--) {
size = (size << 32) | *tmp1;
tmp1++;
}
start = _ALIGN_DOWN(start, MEMORY_INCREMENT);
size = _ALIGN_UP(size, MEMORY_INCREMENT);
if ((start + size) > MAX_MEMORY)
BUG();
tmp2 = (int *)get_property(memory, "ibm,associativity",
NULL);
if (!tmp2)
continue;
numa_domain = tmp2[depth];
/* FIXME */
if (numa_domain == 0xffff) {
dbg("cpu has no numa doman\n");
numa_domain = 0;
}
if (numa_domain >= MAX_NUMNODES)
BUG();
if (max_domain < numa_domain)
max_domain = numa_domain;
numa_node_exists[numa_domain] = 1;
for (i = start ; i < (start+size); i += MEMORY_INCREMENT)
numa_memory_lookup_table[i >> MEMORY_INCREMENT_SHIFT] =
numa_domain;
dbg("memory region %lx to %lx maps to domain %d\n",
start, start+size, numa_domain);
ranges--;
if (ranges)
goto new_range;
}
numnodes = max_domain + 1;
return 0;
}
void __init do_init_bootmem(void)
......@@ -42,15 +171,16 @@ void __init do_init_bootmem(void)
min_low_pfn = 0;
max_low_pfn = lmb_end_of_DRAM() >> PAGE_SHIFT;
/* XXX FIXME: support machines without associativity information */
if (parse_numa_properties())
BUG();
for (nid = 0; nid < MAX_NUMNODES; nid++) {
for (nid = 0; nid < numnodes; nid++) {
unsigned long start, end;
unsigned long start_paddr, end_paddr;
int i;
unsigned long bootmem_paddr;
unsigned long bootmap_size;
unsigned long bootmap_pages;
if (!numa_node_exists[nid])
continue;
......@@ -74,21 +204,17 @@ void __init do_init_bootmem(void)
NODE_DATA(nid)->bdata = &plat_node_bdata[nid];
/* XXX FIXME: first bitmap hardwired to 1G */
if (start_paddr == 0)
bootmem_paddr = (1 << 30);
else
bootmem_paddr = start_paddr;
bootmap_pages = bootmem_bootmap_pages(end_paddr - start_paddr);
dbg("bootmap_pages = %lx\n", bootmap_pages);
bootmem_paddr = lmb_alloc_base(bootmap_pages << PAGE_SHIFT,
PAGE_SIZE, end_paddr);
dbg("bootmap_paddr = %lx\n", bootmem_paddr);
bootmap_size = init_bootmem_node(NODE_DATA(nid),
bootmem_paddr >> PAGE_SHIFT,
init_bootmem_node(NODE_DATA(nid), bootmem_paddr >> PAGE_SHIFT,
start_paddr >> PAGE_SHIFT,
end_paddr >> PAGE_SHIFT);
dbg("bootmap_size = %lx\n", bootmap_size);
for (i = 0; i < lmb.memory.cnt; i++) {
unsigned long physbase, size;
unsigned long type = lmb.memory.region[i].type;
......@@ -137,10 +263,6 @@ void __init do_init_bootmem(void)
size);
}
}
dbg("reserve_bootmem %lx %lx\n", bootmem_paddr, bootmap_size);
reserve_bootmem_node(NODE_DATA(nid), bootmem_paddr,
bootmap_size);
}
}
......@@ -152,7 +274,7 @@ void __init paging_init(void)
for (i = 1; i < MAX_NR_ZONES; i++)
zones_size[i] = 0;
for (nid = 0; nid < MAX_NUMNODES; nid++) {
for (nid = 0; nid < numnodes; nid++) {
unsigned long start_pfn;
unsigned long end_pfn;
......@@ -163,8 +285,8 @@ void __init paging_init(void)
end_pfn = plat_node_bdata[nid].node_low_pfn;
zones_size[ZONE_DMA] = end_pfn - start_pfn;
dbg("free_area_init node %d %lx %lx\n", nid, zones_size,
start_pfn);
dbg("free_area_init node %d %lx %lx\n", nid,
zones_size[ZONE_DMA], start_pfn);
free_area_init_node(nid, NODE_DATA(nid), NULL, zones_size,
start_pfn, NULL);
}
......
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