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Diffstat (limited to 'kernel/arch/alpha/include/asm/mmzone.h')
| -rw-r--r-- | kernel/arch/alpha/include/asm/mmzone.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/kernel/arch/alpha/include/asm/mmzone.h b/kernel/arch/alpha/include/asm/mmzone.h new file mode 100644 index 000000000..14ce27bcc --- /dev/null +++ b/kernel/arch/alpha/include/asm/mmzone.h @@ -0,0 +1,112 @@ +/* + * 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 <asm/smp.h> + +struct bootmem_data_t; /* stupid forward decl. */ + +/* + * Following are macros that are specific to this numa platform. + */ + +extern pg_data_t node_data[]; + +#define alpha_pa_to_nid(pa) \ + (alpha_mv.pa_to_nid \ + ? alpha_mv.pa_to_nid(pa) \ + : (0)) +#define node_mem_start(nid) \ + (alpha_mv.node_mem_start \ + ? alpha_mv.node_mem_start(nid) \ + : (0UL)) +#define node_mem_size(nid) \ + (alpha_mv.node_mem_size \ + ? alpha_mv.node_mem_size(nid) \ + : ((nid) ? (0UL) : (~0UL))) + +#define pa_to_nid(pa) alpha_pa_to_nid(pa) +#define NODE_DATA(nid) (&node_data[(nid)]) + +#define node_localnr(pfn, nid) ((pfn) - NODE_DATA(nid)->node_start_pfn) + +#if 1 +#define PLAT_NODE_DATA_LOCALNR(p, n) \ + (((p) >> PAGE_SHIFT) - PLAT_NODE_DATA(n)->gendata.node_start_pfn) +#else +static inline unsigned long +PLAT_NODE_DATA_LOCALNR(unsigned long p, int n) +{ + unsigned long temp; + temp = p >> PAGE_SHIFT; + return temp - PLAT_NODE_DATA(n)->gendata.node_start_pfn; +} +#endif + +#ifdef CONFIG_DISCONTIGMEM + +/* + * Following are macros that each numa implementation must define. + */ + +/* + * Given a kernel address, find the home node of the underlying memory. + */ +#define kvaddr_to_nid(kaddr) pa_to_nid(__pa(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_pfn \ + << PAGE_SHIFT)) + +/* XXX: FIXME -- nyc */ +#define kern_addr_valid(kaddr) (0) + +#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) + +#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> 32)) +#define pgd_page(pgd) (pfn_to_page(pgd_val(pgd) >> 32)) +#define pte_pfn(pte) (pte_val(pte) >> 32) + +#define mk_pte(page, pgprot) \ +({ \ + pte_t pte; \ + unsigned long pfn; \ + \ + pfn = page_to_pfn(page) << 32; \ + pte_val(pte) = pfn | pgprot_val(pgprot); \ + \ + pte; \ +}) + +#define pte_page(x) \ +({ \ + unsigned long kvirt; \ + struct page * __xx; \ + \ + kvirt = (unsigned long)__va(pte_val(x) >> (32-PAGE_SHIFT)); \ + __xx = virt_to_page(kvirt); \ + \ + __xx; \ +}) + +#define page_to_pa(page) \ + (page_to_pfn(page) << PAGE_SHIFT) + +#define pfn_to_nid(pfn) pa_to_nid(((u64)(pfn) << PAGE_SHIFT)) +#define pfn_valid(pfn) \ + (((pfn) - node_start_pfn(pfn_to_nid(pfn))) < \ + node_spanned_pages(pfn_to_nid(pfn))) \ + +#define virt_addr_valid(kaddr) pfn_valid((__pa(kaddr) >> PAGE_SHIFT)) + +#endif /* CONFIG_DISCONTIGMEM */ + +#endif /* _ASM_MMZONE_H_ */ |