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Diffstat (limited to 'ANDROID_3.4.5/arch/x86/mm/iomap_32.c')
-rw-r--r--ANDROID_3.4.5/arch/x86/mm/iomap_32.c119
1 files changed, 0 insertions, 119 deletions
diff --git a/ANDROID_3.4.5/arch/x86/mm/iomap_32.c b/ANDROID_3.4.5/arch/x86/mm/iomap_32.c
deleted file mode 100644
index 7b179b49..00000000
--- a/ANDROID_3.4.5/arch/x86/mm/iomap_32.c
+++ /dev/null
@@ -1,119 +0,0 @@
-/*
- * Copyright © 2008 Ingo Molnar
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- */
-
-#include <asm/iomap.h>
-#include <asm/pat.h>
-#include <linux/module.h>
-#include <linux/highmem.h>
-
-static int is_io_mapping_possible(resource_size_t base, unsigned long size)
-{
-#if !defined(CONFIG_X86_PAE) && defined(CONFIG_PHYS_ADDR_T_64BIT)
- /* There is no way to map greater than 1 << 32 address without PAE */
- if (base + size > 0x100000000ULL)
- return 0;
-#endif
- return 1;
-}
-
-int iomap_create_wc(resource_size_t base, unsigned long size, pgprot_t *prot)
-{
- unsigned long flag = _PAGE_CACHE_WC;
- int ret;
-
- if (!is_io_mapping_possible(base, size))
- return -EINVAL;
-
- ret = io_reserve_memtype(base, base + size, &flag);
- if (ret)
- return ret;
-
- *prot = __pgprot(__PAGE_KERNEL | flag);
- return 0;
-}
-EXPORT_SYMBOL_GPL(iomap_create_wc);
-
-void iomap_free(resource_size_t base, unsigned long size)
-{
- io_free_memtype(base, base + size);
-}
-EXPORT_SYMBOL_GPL(iomap_free);
-
-void *kmap_atomic_prot_pfn(unsigned long pfn, pgprot_t prot)
-{
- unsigned long vaddr;
- int idx, type;
-
- pagefault_disable();
-
- type = kmap_atomic_idx_push();
- idx = type + KM_TYPE_NR * smp_processor_id();
- vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
- set_pte(kmap_pte - idx, pfn_pte(pfn, prot));
- arch_flush_lazy_mmu_mode();
-
- return (void *)vaddr;
-}
-
-/*
- * Map 'pfn' using protections 'prot'
- */
-void __iomem *
-iomap_atomic_prot_pfn(unsigned long pfn, pgprot_t prot)
-{
- /*
- * For non-PAT systems, promote PAGE_KERNEL_WC to PAGE_KERNEL_UC_MINUS.
- * PAGE_KERNEL_WC maps to PWT, which translates to uncached if the
- * MTRR is UC or WC. UC_MINUS gets the real intention, of the
- * user, which is "WC if the MTRR is WC, UC if you can't do that."
- */
- if (!pat_enabled && pgprot_val(prot) == pgprot_val(PAGE_KERNEL_WC))
- prot = PAGE_KERNEL_UC_MINUS;
-
- return (void __force __iomem *) kmap_atomic_prot_pfn(pfn, prot);
-}
-EXPORT_SYMBOL_GPL(iomap_atomic_prot_pfn);
-
-void
-iounmap_atomic(void __iomem *kvaddr)
-{
- unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK;
-
- if (vaddr >= __fix_to_virt(FIX_KMAP_END) &&
- vaddr <= __fix_to_virt(FIX_KMAP_BEGIN)) {
- int idx, type;
-
- type = kmap_atomic_idx();
- idx = type + KM_TYPE_NR * smp_processor_id();
-
-#ifdef CONFIG_DEBUG_HIGHMEM
- WARN_ON_ONCE(vaddr != __fix_to_virt(FIX_KMAP_BEGIN + idx));
-#endif
- /*
- * Force other mappings to Oops if they'll try to access this
- * pte without first remap it. Keeping stale mappings around
- * is a bad idea also, in case the page changes cacheability
- * attributes or becomes a protected page in a hypervisor.
- */
- kpte_clear_flush(kmap_pte-idx, vaddr);
- kmap_atomic_idx_pop();
- }
-
- pagefault_enable();
-}
-EXPORT_SYMBOL_GPL(iounmap_atomic);