From 0a41e2501160587eb8f66cef3bdf1c6f2cb86997 Mon Sep 17 00:00:00 2001 From: Peter Chubb Date: Tue, 16 Aug 2005 19:54:00 -0700 Subject: [IA64] Rationalise Region Definitions Currently, region numbers are defined in several files, with several names. For example, we have REGION_KERNEL in asm/page.h and RGN_KERNEL in pgtable.h We also have address definitions that should depend on the RGN_XXX macros, but are currently just long constants. The following patch reorganises all the definitions so that they have the same form (RGN_XXX), are in one place, and that addresses that depend on RGN_XXX are derived from them. (This is a necessary but not sufficient patch to allow UML-like operation on IA64). Thanks to David Mosberger for catching the change I missed in mmu_context.h. Signed-off-by: Peter Chubb Signed-off-by: Tony Luck --- include/asm-ia64/io.h | 2 +- include/asm-ia64/mmu_context.h | 7 ++++++- include/asm-ia64/page.h | 27 ++++++++++++++++++--------- include/asm-ia64/pgtable.h | 13 +++++-------- include/asm-ia64/system.h | 5 +++-- 5 files changed, 33 insertions(+), 21 deletions(-) (limited to 'include/asm-ia64') diff --git a/include/asm-ia64/io.h b/include/asm-ia64/io.h index 54e7637a326c..3c28eeb0b009 100644 --- a/include/asm-ia64/io.h +++ b/include/asm-ia64/io.h @@ -23,7 +23,7 @@ #define __SLOW_DOWN_IO do { } while (0) #define SLOW_DOWN_IO do { } while (0) -#define __IA64_UNCACHED_OFFSET 0xc000000000000000UL /* region 6 */ +#define __IA64_UNCACHED_OFFSET RGN_BASE(RGN_UNCACHED) /* * The legacy I/O space defined by the ia64 architecture supports only 65536 ports, but diff --git a/include/asm-ia64/mmu_context.h b/include/asm-ia64/mmu_context.h index e3e5fededb04..ab60a6a26911 100644 --- a/include/asm-ia64/mmu_context.h +++ b/include/asm-ia64/mmu_context.h @@ -19,6 +19,7 @@ #define ia64_rid(ctx,addr) (((ctx) << 3) | (addr >> 61)) +# include # ifndef __ASSEMBLY__ #include @@ -110,7 +111,7 @@ reload_context (mm_context_t context) unsigned long rid_incr = 0; unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4; - old_rr4 = ia64_get_rr(0x8000000000000000UL); + old_rr4 = ia64_get_rr(RGN_BASE(RGN_HPAGE)); rid = context << 3; /* make space for encoding the region number */ rid_incr = 1 << 8; @@ -122,6 +123,10 @@ reload_context (mm_context_t context) rr4 = rr0 + 4*rid_incr; #ifdef CONFIG_HUGETLB_PAGE rr4 = (rr4 & (~(0xfcUL))) | (old_rr4 & 0xfc); + +# if RGN_HPAGE != 4 +# error "reload_context assumes RGN_HPAGE is 4" +# endif #endif ia64_set_rr(0x0000000000000000UL, rr0); diff --git a/include/asm-ia64/page.h b/include/asm-ia64/page.h index 08894f73abf0..ec17f9e9da75 100644 --- a/include/asm-ia64/page.h +++ b/include/asm-ia64/page.h @@ -12,6 +12,19 @@ #include #include +/* + * The top three bits of an IA64 address are its Region Number. + * Different regions are assigned to different purposes. + */ +#define RGN_SHIFT (61) +#define RGN_BASE(r) (__IA64_UL_CONST(r)<> (HPAGE_SHIFT-PAGE_SHIFT))) # define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) # define is_hugepage_only_range(mm, addr, len) \ - (REGION_NUMBER(addr) == REGION_HPAGE && \ - REGION_NUMBER((addr)+(len)-1) == REGION_HPAGE) + (REGION_NUMBER(addr) == RGN_HPAGE && \ + REGION_NUMBER((addr)+(len)-1) == RGN_HPAGE) extern unsigned int hpage_shift; #endif @@ -197,7 +206,7 @@ get_order (unsigned long size) # define __pgprot(x) (x) #endif /* !STRICT_MM_TYPECHECKS */ -#define PAGE_OFFSET __IA64_UL_CONST(0xe000000000000000) +#define PAGE_OFFSET RGN_BASE(RGN_KERNEL) #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC | \ diff --git a/include/asm-ia64/pgtable.h b/include/asm-ia64/pgtable.h index 48586e08f432..2e34c06e6777 100644 --- a/include/asm-ia64/pgtable.h +++ b/include/asm-ia64/pgtable.h @@ -204,21 +204,18 @@ ia64_phys_addr_valid (unsigned long addr) #define set_pte(ptep, pteval) (*(ptep) = (pteval)) #define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) -#define RGN_SIZE (1UL << 61) -#define RGN_KERNEL 7 - -#define VMALLOC_START 0xa000000200000000UL +#define VMALLOC_START (RGN_BASE(RGN_GATE) + 0x200000000UL) #ifdef CONFIG_VIRTUAL_MEM_MAP -# define VMALLOC_END_INIT (0xa000000000000000UL + (1UL << (4*PAGE_SHIFT - 9))) +# define VMALLOC_END_INIT (RGN_BASE(RGN_GATE) + (1UL << (4*PAGE_SHIFT - 9))) # define VMALLOC_END vmalloc_end extern unsigned long vmalloc_end; #else -# define VMALLOC_END (0xa000000000000000UL + (1UL << (4*PAGE_SHIFT - 9))) +# define VMALLOC_END (RGN_BASE(RGN_GATE) + (1UL << (4*PAGE_SHIFT - 9))) #endif /* fs/proc/kcore.c */ -#define kc_vaddr_to_offset(v) ((v) - 0xa000000000000000UL) -#define kc_offset_to_vaddr(o) ((o) + 0xa000000000000000UL) +#define kc_vaddr_to_offset(v) ((v) - RGN_BASE(RGN_GATE)) +#define kc_offset_to_vaddr(o) ((o) + RGN_BASE(RGN_GATE)) /* * Conversion functions: convert page frame number (pfn) and a protection value to a page diff --git a/include/asm-ia64/system.h b/include/asm-ia64/system.h index cd2cf76b2db1..33256db4a7cf 100644 --- a/include/asm-ia64/system.h +++ b/include/asm-ia64/system.h @@ -19,12 +19,13 @@ #include #include -#define GATE_ADDR __IA64_UL_CONST(0xa000000000000000) +#define GATE_ADDR RGN_BASE(RGN_GATE) + /* * 0xa000000000000000+2*PERCPU_PAGE_SIZE * - 0xa000000000000000+3*PERCPU_PAGE_SIZE remain unmapped (guard page) */ -#define KERNEL_START __IA64_UL_CONST(0xa000000100000000) +#define KERNEL_START (GATE_ADDR+0x100000000) #define PERCPU_ADDR (-PERCPU_PAGE_SIZE) #ifndef __ASSEMBLY__ -- cgit v1.2.2 From 1b66776da71e33dff5edcc0b096ec3b7c40c75ad Mon Sep 17 00:00:00 2001 From: Greg Edwards Date: Mon, 22 Aug 2005 09:57:00 -0700 Subject: [IA64] clean up sn2 region definitions Clean up some duplicate region definitions in sn2 code. Signed-off-by: Greg Edwards Signed-off-by: Tony Luck --- include/asm-ia64/page.h | 4 ++-- include/asm-ia64/sn/addrs.h | 33 ++++++++++++--------------------- 2 files changed, 14 insertions(+), 23 deletions(-) (limited to 'include/asm-ia64') diff --git a/include/asm-ia64/page.h b/include/asm-ia64/page.h index ec17f9e9da75..9edffad8c28b 100644 --- a/include/asm-ia64/page.h +++ b/include/asm-ia64/page.h @@ -17,9 +17,9 @@ * Different regions are assigned to different purposes. */ #define RGN_SHIFT (61) -#define RGN_BASE(r) (__IA64_UL_CONST(r)<