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/*
* Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
* Adapted for the alpha wildfire architecture Jan 2001.
*/
#ifndef _ASM_MMZONE_H_
#define _ASM_MMZONE_H_
#include <linux/config.h>
#ifdef CONFIG_NUMA_SCHED
#include <linux/numa_sched.h>
#endif
#ifdef NOTYET
#include <asm/sn/types.h>
#include <asm/sn/addrs.h>
#include <asm/sn/arch.h>
#include <asm/sn/klkernvars.h>
#endif /* NOTYET */
typedef struct plat_pglist_data {
pg_data_t gendata;
#ifdef NOTYET
kern_vars_t kern_vars;
#endif
#if defined(CONFIG_NUMA) && defined(CONFIG_NUMA_SCHED)
struct numa_schedule_data schedule_data;
#endif
} plat_pg_data_t;
struct bootmem_data_t; /* stupid forward decl. */
/*
* Following are macros that are specific to this numa platform.
*/
extern plat_pg_data_t *plat_node_data[];
#ifdef CONFIG_ALPHA_WILDFIRE
# define ALPHA_PA_TO_NID(pa) ((pa) >> 36) /* 16 nodes max due 43bit kseg */
#define NODE_MAX_MEM_SIZE (64L * 1024L * 1024L * 1024L) /* 64 GB */
#define MAX_NUMNODES WILDFIRE_MAX_QBB
#else
# define ALPHA_PA_TO_NID(pa) (0)
#define NODE_MAX_MEM_SIZE (~0UL)
#define MAX_NUMNODES 1
#endif
#define PHYSADDR_TO_NID(pa) ALPHA_PA_TO_NID(pa)
#define PLAT_NODE_DATA(n) (plat_node_data[(n)])
#define PLAT_NODE_DATA_STARTNR(n) \
(PLAT_NODE_DATA(n)->gendata.node_start_mapnr)
#define PLAT_NODE_DATA_SIZE(n) (PLAT_NODE_DATA(n)->gendata.node_size)
#if 1
#define PLAT_NODE_DATA_LOCALNR(p, n) \
(((p) - PLAT_NODE_DATA(n)->gendata.node_start_paddr) >> PAGE_SHIFT)
#else
static inline unsigned long
PLAT_NODE_DATA_LOCALNR(unsigned long p, int n)
{
unsigned long temp;
temp = p - PLAT_NODE_DATA(n)->gendata.node_start_paddr;
return (temp >> PAGE_SHIFT);
}
#endif
#ifdef CONFIG_DISCONTIGMEM
/*
* Following are macros that each numa implmentation must define.
*/
/*
* Given a kernel address, find the home node of the underlying memory.
*/
#define KVADDR_TO_NID(kaddr) PHYSADDR_TO_NID(__pa(kaddr))
/*
* Return a pointer to the node data for node n.
*/
#define NODE_DATA(n) (&((PLAT_NODE_DATA(n))->gendata))
/*
* NODE_MEM_MAP gives the kaddr for the mem_map of the node.
*/
#define NODE_MEM_MAP(nid) (NODE_DATA(nid)->node_mem_map)
/*
* Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
* and returns the the mem_map of that node.
*/
#define ADDR_TO_MAPBASE(kaddr) \
NODE_MEM_MAP(KVADDR_TO_NID((unsigned long)(kaddr)))
/*
* Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory
* and returns the kaddr corresponding to first physical page in the
* node's mem_map.
*/
#define LOCAL_BASE_ADDR(kaddr) ((unsigned long)__va(NODE_DATA(KVADDR_TO_NID(kaddr))->node_start_paddr))
#define LOCAL_MAP_NR(kvaddr) \
(((unsigned long)(kvaddr)-LOCAL_BASE_ADDR(kvaddr)) >> PAGE_SHIFT)
#define kern_addr_valid(kaddr) test_bit(LOCAL_MAP_NR(kaddr), \
NODE_DATA(KVADDR_TO_NID(kaddr))->valid_addr_bitmap)
#define virt_to_page(kaddr) (ADDR_TO_MAPBASE(kaddr) + LOCAL_MAP_NR(kaddr))
#define VALID_PAGE(page) (((page) - mem_map) < max_mapnr)
#ifdef CONFIG_NUMA
#ifdef CONFIG_NUMA_SCHED
#define NODE_SCHEDULE_DATA(nid) (&((PLAT_NODE_DATA(nid))->schedule_data))
#endif
#ifdef CONFIG_ALPHA_WILDFIRE
/* With wildfire assume 4 CPUs per node */
#define cputonode(cpu) ((cpu) >> 2)
#else
#define cputonode(cpu) 0
#endif /* CONFIG_ALPHA_WILDFIRE */
#define numa_node_id() cputonode(smp_processor_id())
#endif /* CONFIG_NUMA */
#endif /* CONFIG_DISCONTIGMEM */
#endif /* _ASM_MMZONE_H_ */
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