- /*
- * 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_ */