Viewing file:  discontig.c (3.24 KB) -rw-r--r--
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/*
* Copyright 2000, Silicon Graphics, sprasad@engr.sgi.com
* Copyright 2000, Kanoj Sarcar, kanoj@sgi.com
*/
/*
* Contains common definitions and globals for NUMA platform
* support. For now, SN-IA64 and SN-MIPS are the NUMA platforms.
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/bootmem.h>
#include <asm/sn/mmzone.h>
#include <asm/efi.h>
extern int numnodes ;
plat_pg_data_t plat_node_data[MAXNODES];
bootmem_data_t bdata[MAXNODES];
int chunktonid[MAXCHUNKS];
int nasid_map[MAXNASIDS];
void __init
init_chunktonid(void)
{
memset(chunktonid, -1, sizeof(chunktonid)) ;
}
void __init
init_nodeidmap(void)
{
memset(nasid_map, -1, sizeof(nasid_map)) ;
}
int cnodeid_map[MAXNODES] ;
void __init
init_cnodeidmap(void)
{
memset(cnodeid_map, -1, sizeof(cnodeid_map)) ;
}
int
numa_debug(void)
{
panic("NUMA debug\n");
return(0);
}
int __init
build_cnodeid_map(void)
{
int i,j ;
for (i=0,j=0;i<MAXNASIDS;i++) {
if (nasid_map[i] >= 0)
cnodeid_map[j++] = i ;
}
return j ;
}
/*
* Since efi_memmap_walk merges contiguous banks, this code will need
* to find all the nasids covered by the input memory descriptor.
*/
static int __init
build_nasid_map(unsigned long start, unsigned long end, void *arg)
{
unsigned long vaddr = start;
int nasid = GetNasId(__pa(vaddr));
while (vaddr < end) {
if (nasid < MAXNASIDS)
nasid_map[nasid] = 0;
else
panic("build_nasid_map");
vaddr = (unsigned long)__va((unsigned long)(++nasid) <<
SN1_NODE_ADDR_SHIFT);
}
return 0;
}
void __init
fix_nasid_map(void)
{
int i ;
int j ;
/* For every nasid */
for (j=0;j<MAXNASIDS;j++) {
for (i=0;i<MAXNODES;i++) {
if (CNODEID_TO_NASID(i) == j)
break ;
}
if (i<MAXNODES)
nasid_map[j] = i ;
}
}
static void __init
dump_bootmem_info(void)
{
int i;
struct bootmem_data *bdata ;
printk("CNODE INFO ....\n") ;
for (i=0;i<numnodes;i++) {
printk("%d ", CNODEID_TO_NASID(i)) ;
}
printk("\n") ;
printk("BOOT MEM INFO ....\n") ;
printk("Node Start LowPfn BootmemMap\n") ;
for (i=0;i<numnodes;i++) {
bdata = NODE_DATA(i)->bdata ;
printk("%d 0x%016lx 0x%016lx 0x%016lx\n", i,
bdata->node_boot_start, bdata->node_low_pfn,
(unsigned long)bdata->node_bootmem_map) ;
}
}
void __init
discontig_mem_init(void)
{
extern void setup_sn1_bootmem(int);
int maxnodes ;
init_chunktonid() ;
init_nodeidmap() ;
init_cnodeidmap() ;
efi_memmap_walk(build_nasid_map, 0) ;
maxnodes = build_cnodeid_map() ;
fix_nasid_map() ;
#ifdef CONFIG_DISCONTIGMEM
setup_sn1_bootmem(maxnodes) ;
#endif
numnodes = maxnodes;
dump_bootmem_info() ;
}
void
dump_node_data(void)
{
int i;
printk("NODE DATA ....\n") ;
printk("Node, Start, Size, MemMap, BitMap, StartP, Mapnr, Size, Id\n") ;
for (i=0;i<numnodes;i++) {
printk("%d, 0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx, %d\n",
CNODEID_TO_NASID(i), NODE_START(i), NODE_SIZE(i),
(long)NODE_MEM_MAP(i), (long)NODE_DATA(i)->valid_addr_bitmap,
NODE_DATA(i)->node_start_paddr,
NODE_DATA(i)->node_start_mapnr,
NODE_DATA(i)->node_size,
NODE_DATA(i)->node_id) ;
}
}
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