mirror of https://gitee.com/openkylin/linux.git
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>
This commit is contained in:
Christophe Leroy
Scott Wood
parent
be00ed728c
commit
3084cdb7cd
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@ -72,10 +72,11 @@ unsigned long tlbcam_sz(int idx)
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return tlbcam_addrs[idx].limit - tlbcam_addrs[idx].start + 1;
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}
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#ifdef CONFIG_FSL_BOOKE
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/*
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* Return PA for this VA if it is mapped by a CAM, or 0
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*/
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phys_addr_t v_mapped_by_tlbcam(unsigned long va)
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phys_addr_t v_block_mapped(unsigned long va)
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{
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int b;
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for (b = 0; b < tlbcam_index; ++b)
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@ -87,7 +88,7 @@ phys_addr_t v_mapped_by_tlbcam(unsigned long va)
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/*
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* Return VA for a given PA or 0 if not mapped
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*/
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unsigned long p_mapped_by_tlbcam(phys_addr_t pa)
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unsigned long p_block_mapped(phys_addr_t pa)
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{
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int b;
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for (b = 0; b < tlbcam_index; ++b)
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@ -97,6 +98,7 @@ unsigned long p_mapped_by_tlbcam(phys_addr_t pa)
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return tlbcam_addrs[b].start+(pa-tlbcam_addrs[b].phys);
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return 0;
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}
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#endif
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/*
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* Set up a variable-size TLB entry (tlbcam). The parameters are not checked;
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@ -159,3 +159,13 @@ struct tlbcam {
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u32 MAS7;
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};
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#endif
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#if defined(CONFIG_6xx) || defined(CONFIG_FSL_BOOKE)
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/* 6xx have BATS */
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/* FSL_BOOKE have TLBCAM */
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phys_addr_t v_block_mapped(unsigned long va);
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unsigned long p_block_mapped(phys_addr_t pa);
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#else
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static inline phys_addr_t v_block_mapped(unsigned long va) { return 0; }
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static inline unsigned long p_block_mapped(phys_addr_t pa) { return 0; }
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#endif
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@ -41,32 +41,8 @@ unsigned long ioremap_base;
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unsigned long ioremap_bot;
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EXPORT_SYMBOL(ioremap_bot); /* aka VMALLOC_END */
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#ifdef CONFIG_6xx
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#define HAVE_BATS 1
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#endif
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#if defined(CONFIG_FSL_BOOKE)
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#define HAVE_TLBCAM 1
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#endif
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extern char etext[], _stext[];
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#ifdef HAVE_BATS
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extern phys_addr_t v_mapped_by_bats(unsigned long va);
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extern unsigned long p_mapped_by_bats(phys_addr_t pa);
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#else /* !HAVE_BATS */
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#define v_mapped_by_bats(x) (0UL)
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#define p_mapped_by_bats(x) (0UL)
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#endif /* HAVE_BATS */
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#ifdef HAVE_TLBCAM
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extern phys_addr_t v_mapped_by_tlbcam(unsigned long va);
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extern unsigned long p_mapped_by_tlbcam(phys_addr_t pa);
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#else /* !HAVE_TLBCAM */
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#define v_mapped_by_tlbcam(x) (0UL)
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#define p_mapped_by_tlbcam(x) (0UL)
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#endif /* HAVE_TLBCAM */
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#define PGDIR_ORDER (32 + PGD_T_LOG2 - PGDIR_SHIFT)
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#ifndef CONFIG_PPC_4K_PAGES
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@ -228,19 +204,10 @@ __ioremap_caller(phys_addr_t addr, unsigned long size, unsigned long flags,
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/*
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* Is it already mapped? Perhaps overlapped by a previous
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* BAT mapping. If the whole area is mapped then we're done,
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* otherwise remap it since we want to keep the virt addrs for
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* each request contiguous.
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*
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* We make the assumption here that if the bottom and top
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* of the range we want are mapped then it's mapped to the
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* same virt address (and this is contiguous).
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* -- Cort
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* mapping.
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*/
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if ((v = p_mapped_by_bats(p)) /*&& p_mapped_by_bats(p+size-1)*/ )
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goto out;
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if ((v = p_mapped_by_tlbcam(p)))
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v = p_block_mapped(p);
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if (v)
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goto out;
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if (slab_is_available()) {
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@ -278,7 +245,8 @@ void iounmap(volatile void __iomem *addr)
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* If mapped by BATs then there is nothing to do.
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* Calling vfree() generates a benign warning.
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*/
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if (v_mapped_by_bats((unsigned long)addr)) return;
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if (v_block_mapped((unsigned long)addr))
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return;
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if (addr > high_memory && (unsigned long) addr < ioremap_bot)
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vunmap((void *) (PAGE_MASK & (unsigned long)addr));
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@ -403,7 +371,7 @@ static int __change_page_attr(struct page *page, pgprot_t prot)
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BUG_ON(PageHighMem(page));
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address = (unsigned long)page_address(page);
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if (v_mapped_by_bats(address) || v_mapped_by_tlbcam(address))
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if (v_block_mapped(address))
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return 0;
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if (!get_pteptr(&init_mm, address, &kpte, &kpmd))
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return -EINVAL;
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@ -49,7 +49,7 @@ struct batrange { /* stores address ranges mapped by BATs */
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/*
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* Return PA for this VA if it is mapped by a BAT, or 0
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*/
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phys_addr_t v_mapped_by_bats(unsigned long va)
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phys_addr_t v_block_mapped(unsigned long va)
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{
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int b;
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for (b = 0; b < 4; ++b)
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@ -61,7 +61,7 @@ phys_addr_t v_mapped_by_bats(unsigned long va)
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/*
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* Return VA for a given PA or 0 if not mapped
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*/
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unsigned long p_mapped_by_bats(phys_addr_t pa)
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unsigned long p_block_mapped(phys_addr_t pa)
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{
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int b;
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for (b = 0; b < 4; ++b)
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