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author | Christophe Leroy <christophe.leroy@c-s.fr> | 2016-02-09 16:07:58 (GMT) |
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committer | Scott Wood <oss@buserror.net> | 2016-03-11 23:18:02 (GMT) |
commit | 3084cdb7cd6a1609d0a4480291f5e4da80765d03 (patch) | |
tree | d8d20ff4c28fc0dc4a3d3e4765f3f24d77d97198 /arch/powerpc/mm/pgtable_32.c | |
parent | be00ed728c32ed8311d5191637067c9eaf0fca4b (diff) | |
download | linux-3084cdb7cd6a1609d0a4480291f5e4da80765d03.tar.xz |
powerpc32: refactor x_mapped_by_bats() and x_mapped_by_tlbcam() together
x_mapped_by_bats() and x_mapped_by_tlbcam() serve the same kind of
purpose, and are never defined at the same time.
So rename them x_block_mapped() and define them in the relevant
places
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <oss@buserror.net>
Diffstat (limited to 'arch/powerpc/mm/pgtable_32.c')
-rw-r--r-- | arch/powerpc/mm/pgtable_32.c | 44 |
1 files changed, 6 insertions, 38 deletions
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 7692d1b..db0d35e 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -41,32 +41,8 @@ unsigned long ioremap_base; unsigned long ioremap_bot; EXPORT_SYMBOL(ioremap_bot); /* aka VMALLOC_END */ -#ifdef CONFIG_6xx -#define HAVE_BATS 1 -#endif - -#if defined(CONFIG_FSL_BOOKE) -#define HAVE_TLBCAM 1 -#endif - extern char etext[], _stext[]; -#ifdef HAVE_BATS -extern phys_addr_t v_mapped_by_bats(unsigned long va); -extern unsigned long p_mapped_by_bats(phys_addr_t pa); -#else /* !HAVE_BATS */ -#define v_mapped_by_bats(x) (0UL) -#define p_mapped_by_bats(x) (0UL) -#endif /* HAVE_BATS */ - -#ifdef HAVE_TLBCAM -extern phys_addr_t v_mapped_by_tlbcam(unsigned long va); -extern unsigned long p_mapped_by_tlbcam(phys_addr_t pa); -#else /* !HAVE_TLBCAM */ -#define v_mapped_by_tlbcam(x) (0UL) -#define p_mapped_by_tlbcam(x) (0UL) -#endif /* HAVE_TLBCAM */ - #define PGDIR_ORDER (32 + PGD_T_LOG2 - PGDIR_SHIFT) #ifndef CONFIG_PPC_4K_PAGES @@ -228,19 +204,10 @@ __ioremap_caller(phys_addr_t addr, unsigned long size, unsigned long flags, /* * Is it already mapped? Perhaps overlapped by a previous - * BAT mapping. If the whole area is mapped then we're done, - * otherwise remap it since we want to keep the virt addrs for - * each request contiguous. - * - * We make the assumption here that if the bottom and top - * of the range we want are mapped then it's mapped to the - * same virt address (and this is contiguous). - * -- Cort + * mapping. */ - if ((v = p_mapped_by_bats(p)) /*&& p_mapped_by_bats(p+size-1)*/ ) - goto out; - - if ((v = p_mapped_by_tlbcam(p))) + v = p_block_mapped(p); + if (v) goto out; if (slab_is_available()) { @@ -278,7 +245,8 @@ void iounmap(volatile void __iomem *addr) * If mapped by BATs then there is nothing to do. * Calling vfree() generates a benign warning. */ - if (v_mapped_by_bats((unsigned long)addr)) return; + if (v_block_mapped((unsigned long)addr)) + return; if (addr > high_memory && (unsigned long) addr < ioremap_bot) vunmap((void *) (PAGE_MASK & (unsigned long)addr)); @@ -403,7 +371,7 @@ static int __change_page_attr(struct page *page, pgprot_t prot) BUG_ON(PageHighMem(page)); address = (unsigned long)page_address(page); - if (v_mapped_by_bats(address) || v_mapped_by_tlbcam(address)) + if (v_block_mapped(address)) return 0; if (!get_pteptr(&init_mm, address, &kpte, &kpmd)) return -EINVAL; |