From 1f8d419e291f7f7f7f3ffd4f0ba00834621690c8 Mon Sep 17 00:00:00 2001 From: David Gibson Date: Thu, 5 May 2005 16:15:13 -0700 Subject: [PATCH] ppc64: pgtable.h and other header cleanups This patch started as simply removing a few never-used macros from asm-ppc64/pgtable.h, then kind of grew. It now makes a bunch of cleanups to the ppc64 low-level header files (with corresponding changes to .c files where necessary) such as: - Abolishing never-used macros - Eliminating multiple #defines with the same purpose - Removing pointless macros (cases where just expanding the macro everywhere turns out clearer and more sensible) - Removing some cases where macros which could be defined in terms of each other weren't - Moving imalloc() related definitions from pgtable.h to their own header file (imalloc.h) - Re-arranging headers to group things more logically - Moving all VSID allocation related things to mmu.h, instead of being split between mmu.h and mmu_context.h - Removing some reserved space for flags from the PMD - we're not using it. - Fix some bugs which broke compile with STRICT_MM_TYPECHECKS. Signed-off-by: David Gibson Acked-by: Paul Mackerras Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/ppc64/kernel/pci.c | 2 +- arch/ppc64/mm/hash_native.c | 3 +-- arch/ppc64/mm/hash_utils.c | 11 +++++------ arch/ppc64/mm/imalloc.c | 5 +++-- arch/ppc64/mm/init.c | 1 + arch/ppc64/mm/stab.c | 5 +++++ 6 files changed, 16 insertions(+), 11 deletions(-) (limited to 'arch/ppc64') diff --git a/arch/ppc64/kernel/pci.c b/arch/ppc64/kernel/pci.c index be3cc38..d786d4b 100644 --- a/arch/ppc64/kernel/pci.c +++ b/arch/ppc64/kernel/pci.c @@ -438,7 +438,7 @@ pgprot_t pci_phys_mem_access_prot(struct file *file, int i; if (page_is_ram(offset >> PAGE_SHIFT)) - return prot; + return __pgprot(prot); prot |= _PAGE_NO_CACHE | _PAGE_GUARDED; diff --git a/arch/ppc64/mm/hash_native.c b/arch/ppc64/mm/hash_native.c index 144657e..52b6b93 100644 --- a/arch/ppc64/mm/hash_native.c +++ b/arch/ppc64/mm/hash_native.c @@ -320,8 +320,7 @@ static void native_flush_hash_range(unsigned long context, j = 0; for (i = 0; i < number; i++) { - if ((batch->addr[i] >= USER_START) && - (batch->addr[i] <= USER_END)) + if (batch->addr[i] < KERNELBASE) vsid = get_vsid(context, batch->addr[i]); else vsid = get_kernel_vsid(batch->addr[i]); diff --git a/arch/ppc64/mm/hash_utils.c b/arch/ppc64/mm/hash_utils.c index e48be12..0a0f970 100644 --- a/arch/ppc64/mm/hash_utils.c +++ b/arch/ppc64/mm/hash_utils.c @@ -298,24 +298,23 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap) int local = 0; cpumask_t tmp; + if ((ea & ~REGION_MASK) > EADDR_MASK) + return 1; + switch (REGION_ID(ea)) { case USER_REGION_ID: user_region = 1; mm = current->mm; - if ((ea > USER_END) || (! mm)) + if (! mm) return 1; vsid = get_vsid(mm->context.id, ea); break; case IO_REGION_ID: - if (ea > IMALLOC_END) - return 1; mm = &ioremap_mm; vsid = get_kernel_vsid(ea); break; case VMALLOC_REGION_ID: - if (ea > VMALLOC_END) - return 1; mm = &init_mm; vsid = get_kernel_vsid(ea); break; @@ -362,7 +361,7 @@ void flush_hash_page(unsigned long context, unsigned long ea, pte_t pte, unsigned long vsid, vpn, va, hash, secondary, slot; unsigned long huge = pte_huge(pte); - if ((ea >= USER_START) && (ea <= USER_END)) + if (ea < KERNELBASE) vsid = get_vsid(context, ea); else vsid = get_kernel_vsid(ea); diff --git a/arch/ppc64/mm/imalloc.c b/arch/ppc64/mm/imalloc.c index 9d92b0d..cb8727f 100644 --- a/arch/ppc64/mm/imalloc.c +++ b/arch/ppc64/mm/imalloc.c @@ -14,6 +14,7 @@ #include #include #include +#include static DECLARE_MUTEX(imlist_sem); struct vm_struct * imlist = NULL; @@ -23,11 +24,11 @@ static int get_free_im_addr(unsigned long size, unsigned long *im_addr) unsigned long addr; struct vm_struct **p, *tmp; - addr = IMALLOC_START; + addr = ioremap_bot; for (p = &imlist; (tmp = *p) ; p = &tmp->next) { if (size + addr < (unsigned long) tmp->addr) break; - if ((unsigned long)tmp->addr >= IMALLOC_START) + if ((unsigned long)tmp->addr >= ioremap_bot) addr = tmp->size + (unsigned long) tmp->addr; if (addr > IMALLOC_END-size) return 1; diff --git a/arch/ppc64/mm/init.c b/arch/ppc64/mm/init.c index cf33d7e..afbf252 100644 --- a/arch/ppc64/mm/init.c +++ b/arch/ppc64/mm/init.c @@ -64,6 +64,7 @@ #include #include #include +#include int mem_init_done; unsigned long ioremap_bot = IMALLOC_BASE; diff --git a/arch/ppc64/mm/stab.c b/arch/ppc64/mm/stab.c index 3149113..df4bbe1 100644 --- a/arch/ppc64/mm/stab.c +++ b/arch/ppc64/mm/stab.c @@ -19,6 +19,11 @@ #include #include +struct stab_entry { + unsigned long esid_data; + unsigned long vsid_data; +}; + /* Both the segment table and SLB code uses the following cache */ #define NR_STAB_CACHE_ENTRIES 8 DEFINE_PER_CPU(long, stab_cache_ptr); -- cgit v1.1