/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _CRIS_PAGE_H #define _CRIS_PAGE_H #include <arch/page.h> #include <linux/const.h> /* PAGE_SHIFT determines the page size */ #define PAGE_SHIFT 13 #define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE-1)) #define clear_page(page) memset((void *)(page), 0, PAGE_SIZE) #define copy_page(to,from) memcpy((void *)(to), (void *)(from), PAGE_SIZE) #define clear_user_page(page, vaddr, pg) clear_page(page) #define copy_user_page(to, from, vaddr, pg) copy_page(to, from) #define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \ alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr) #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE /* * These are used to make use of C type-checking.. */ #ifndef __ASSEMBLY__ typedef struct { unsigned long pte; } pte_t; typedef struct { unsigned long pgd; } pgd_t; typedef struct { unsigned long pgprot; } pgprot_t; typedef struct page *pgtable_t; #endif #define pte_val(x) ((x).pte) #define pgd_val(x) ((x).pgd) #define pgprot_val(x) ((x).pgprot) #define __pte(x) ((pte_t) { (x) } ) #define __pgd(x) ((pgd_t) { (x) } ) #define __pgprot(x) ((pgprot_t) { (x) } ) /* On CRIS the PFN numbers doesn't start at 0 so we have to compensate */ /* for that before indexing into the page table starting at mem_map */ #define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT) #define pfn_valid(pfn) (((pfn) - (PAGE_OFFSET >> PAGE_SHIFT)) < max_mapnr) /* to index into the page map. our pages all start at physical addr PAGE_OFFSET so * we can let the map start there. notice that we subtract PAGE_OFFSET because * we start our mem_map there - in other ports they map mem_map physically and * use __pa instead. in our system both the physical and virtual address of DRAM * is too high to let mem_map start at 0, so we do it this way instead (similar * to arm and m68k I think) */ #define virt_to_page(kaddr) (mem_map + (((unsigned long)(kaddr) - PAGE_OFFSET) >> PAGE_SHIFT)) #define virt_addr_valid(kaddr) pfn_valid((unsigned)(kaddr) >> PAGE_SHIFT) /* convert a page (based on mem_map and forward) to a physical address * do this by figuring out the virtual address and then use __pa */ #define page_to_phys(page) __pa((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET) #ifndef __ASSEMBLY__ #endif /* __ASSEMBLY__ */ #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) #include <asm-generic/memory_model.h> #include <asm-generic/getorder.h> #endif /* _CRIS_PAGE_H */
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Kbuild | File | 729 B | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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axisflashmap.h | File | 1.92 KB | 0644 |
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bitops.h | File | 1.27 KB | 0644 |
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bug.h | File | 108 B | 0644 |
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bugs.h | File | 300 B | 0644 |
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cache.h | File | 133 B | 0644 |
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cacheflush.h | File | 1.3 KB | 0644 |
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checksum.h | File | 2.01 KB | 0644 |
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delay.h | File | 537 B | 0644 |
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dma-mapping.h | File | 399 B | 0644 |
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dma.h | File | 458 B | 0644 |
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eshlibld.h | File | 3.49 KB | 0644 |
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etraxi2c.h | File | 1019 B | 0644 |
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fasttimer.h | File | 1.12 KB | 0644 |
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fb.h | File | 244 B | 0644 |
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ftrace.h | File | 12 B | 0644 |
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hw_irq.h | File | 53 B | 0644 |
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io.h | File | 732 B | 0644 |
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irq.h | File | 194 B | 0644 |
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irqflags.h | File | 27 B | 0644 |
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mmu.h | File | 155 B | 0644 |
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mmu_context.h | File | 927 B | 0644 |
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page.h | File | 2.52 KB | 0644 |
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pci.h | File | 1.05 KB | 0644 |
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pgalloc.h | File | 1.36 KB | 0644 |
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pgtable.h | File | 9.58 KB | 0644 |
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processor.h | File | 1.82 KB | 0644 |
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ptrace.h | File | 393 B | 0644 |
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segment.h | File | 148 B | 0644 |
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serial.h | File | 211 B | 0644 |
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shmparam.h | File | 232 B | 0644 |
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signal.h | File | 505 B | 0644 |
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stacktrace.h | File | 213 B | 0644 |
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string.h | File | 508 B | 0644 |
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swab.h | File | 159 B | 0644 |
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switch_to.h | File | 449 B | 0644 |
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termios.h | File | 1.71 KB | 0644 |
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thread_info.h | File | 2.47 KB | 0644 |
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timex.h | File | 433 B | 0644 |
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tlb.h | File | 453 B | 0644 |
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tlbflush.h | File | 1.09 KB | 0644 |
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uaccess.h | File | 9.59 KB | 0644 |
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ucontext.h | File | 322 B | 0644 |
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unaligned.h | File | 345 B | 0644 |
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unistd.h | File | 972 B | 0644 |
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user.h | File | 2.14 KB | 0644 |
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