| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Michal Simek | 580 | 91.48% | 10 | 58.82% |
| Steven J. Magnani | 28 | 4.42% | 2 | 11.76% |
| Kirill A. Shutemov | 13 | 2.05% | 1 | 5.88% |
| John A. Williams | 7 | 1.10% | 1 | 5.88% |
| Linus Torvalds | 4 | 0.63% | 1 | 5.88% |
| FUJITA Tomonori | 1 | 0.16% | 1 | 5.88% |
| Arnd Bergmann | 1 | 0.16% | 1 | 5.88% |
| Total | 634 | 17 |
/* SPDX-License-Identifier: GPL-2.0 */ /* * VM ops * * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu> * Copyright (C) 2008-2009 PetaLogix * Copyright (C) 2006 Atmark Techno, Inc. * Changes for MMU support: * Copyright (C) 2007 Xilinx, Inc. All rights reserved. */ #ifndef _ASM_MICROBLAZE_PAGE_H #define _ASM_MICROBLAZE_PAGE_H #include <linux/pfn.h> #include <asm/setup.h> #include <asm/asm-compat.h> #include <linux/const.h> #ifdef __KERNEL__ /* PAGE_SHIFT determines the page size */ #if defined(CONFIG_MICROBLAZE_64K_PAGES) #define PAGE_SHIFT 16 #elif defined(CONFIG_MICROBLAZE_16K_PAGES) #define PAGE_SHIFT 14 #else #define PAGE_SHIFT 12 #endif #define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE-1)) #define LOAD_OFFSET ASM_CONST((CONFIG_KERNEL_START-CONFIG_KERNEL_BASE_ADDR)) #define PTE_SHIFT (PAGE_SHIFT - 2) /* 1024 ptes per page */ #ifndef __ASSEMBLY__ /* MS be sure that SLAB allocates aligned objects */ #define ARCH_DMA_MINALIGN L1_CACHE_BYTES #define ARCH_SLAB_MINALIGN L1_CACHE_BYTES #define PAGE_UP(addr) (((addr)+((PAGE_SIZE)-1))&(~((PAGE_SIZE)-1))) #define PAGE_DOWN(addr) ((addr)&(~((PAGE_SIZE)-1))) #ifndef CONFIG_MMU /* * PAGE_OFFSET -- the first address of the first page of memory. When not * using MMU this corresponds to the first free page in physical memory (aligned * on a page boundary). */ extern unsigned int __page_offset; #define PAGE_OFFSET __page_offset #else /* CONFIG_MMU */ /* * PAGE_OFFSET -- the first address of the first page of memory. With MMU * it is set to the kernel start address (aligned on a page boundary). * * CONFIG_KERNEL_START is defined in arch/microblaze/config.in and used * in arch/microblaze/Makefile. */ #define PAGE_OFFSET CONFIG_KERNEL_START /* * The basic type of a PTE - 32 bit physical addressing. */ typedef unsigned long pte_basic_t; #define PTE_FMT "%.8lx" #endif /* CONFIG_MMU */ # define copy_page(to, from) memcpy((to), (from), PAGE_SIZE) # define clear_page(pgaddr) memset((pgaddr), 0, PAGE_SIZE) # define clear_user_page(pgaddr, vaddr, page) memset((pgaddr), 0, PAGE_SIZE) # define copy_user_page(vto, vfrom, vaddr, topg) \ memcpy((vto), (vfrom), PAGE_SIZE) /* * These are used to make use of C type-checking.. */ typedef struct page *pgtable_t; typedef struct { unsigned long pte; } pte_t; typedef struct { unsigned long pgprot; } pgprot_t; /* FIXME this can depend on linux kernel version */ # ifdef CONFIG_MMU typedef struct { unsigned long pgd; } pgd_t; # else /* CONFIG_MMU */ typedef struct { unsigned long ste[64]; } pmd_t; typedef struct { pmd_t pue[1]; } pud_t; typedef struct { pud_t p4e[1]; } p4d_t; typedef struct { p4d_t pge[1]; } pgd_t; # endif /* CONFIG_MMU */ # define pte_val(x) ((x).pte) # define pgprot_val(x) ((x).pgprot) # ifdef CONFIG_MMU # define pgd_val(x) ((x).pgd) # else /* CONFIG_MMU */ # define pmd_val(x) ((x).ste[0]) # define pud_val(x) ((x).pue[0]) # define pgd_val(x) ((x).pge[0]) # endif /* CONFIG_MMU */ # define __pte(x) ((pte_t) { (x) }) # define __pgd(x) ((pgd_t) { (x) }) # define __pgprot(x) ((pgprot_t) { (x) }) /** * Conversions for virtual address, physical address, pfn, and struct * page are defined in the following files. * * virt -+ * | asm-microblaze/page.h * phys -+ * | linux/pfn.h * pfn -+ * | asm-generic/memory_model.h * page -+ * */ extern unsigned long max_low_pfn; extern unsigned long min_low_pfn; extern unsigned long max_pfn; extern unsigned long memory_start; extern unsigned long memory_size; extern unsigned long lowmem_size; extern unsigned long kernel_tlb; extern int page_is_ram(unsigned long pfn); # define phys_to_pfn(phys) (PFN_DOWN(phys)) # define pfn_to_phys(pfn) (PFN_PHYS(pfn)) # define virt_to_pfn(vaddr) (phys_to_pfn((__pa(vaddr)))) # define pfn_to_virt(pfn) __va(pfn_to_phys((pfn))) # ifdef CONFIG_MMU # define virt_to_page(kaddr) (pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)) # define page_to_virt(page) __va(page_to_pfn(page) << PAGE_SHIFT) # define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) # else /* CONFIG_MMU */ # define virt_to_page(vaddr) (pfn_to_page(virt_to_pfn(vaddr))) # define page_to_virt(page) (pfn_to_virt(page_to_pfn(page))) # define page_to_phys(page) (pfn_to_phys(page_to_pfn(page))) # define page_to_bus(page) (page_to_phys(page)) # define phys_to_page(paddr) (pfn_to_page(phys_to_pfn(paddr))) # endif /* CONFIG_MMU */ # ifndef CONFIG_MMU # define pfn_valid(pfn) (((pfn) >= min_low_pfn) && \ ((pfn) <= (min_low_pfn + max_mapnr))) # define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT) # else /* CONFIG_MMU */ # define ARCH_PFN_OFFSET (memory_start >> PAGE_SHIFT) # define pfn_valid(pfn) ((pfn) < (max_mapnr + ARCH_PFN_OFFSET)) # endif /* CONFIG_MMU */ # endif /* __ASSEMBLY__ */ #define virt_addr_valid(vaddr) (pfn_valid(virt_to_pfn(vaddr))) # define __pa(x) __virt_to_phys((unsigned long)(x)) # define __va(x) ((void *)__phys_to_virt((unsigned long)(x))) /* Convert between virtual and physical address for MMU. */ /* Handle MicroBlaze processor with virtual memory. */ #ifndef CONFIG_MMU #define __virt_to_phys(addr) addr #define __phys_to_virt(addr) addr #define tophys(rd, rs) addik rd, rs, 0 #define tovirt(rd, rs) addik rd, rs, 0 #else #define __virt_to_phys(addr) \ ((addr) + CONFIG_KERNEL_BASE_ADDR - CONFIG_KERNEL_START) #define __phys_to_virt(addr) \ ((addr) + CONFIG_KERNEL_START - CONFIG_KERNEL_BASE_ADDR) #define tophys(rd, rs) \ addik rd, rs, (CONFIG_KERNEL_BASE_ADDR - CONFIG_KERNEL_START) #define tovirt(rd, rs) \ addik rd, rs, (CONFIG_KERNEL_START - CONFIG_KERNEL_BASE_ADDR) #endif /* CONFIG_MMU */ #define TOPHYS(addr) __virt_to_phys(addr) #ifdef CONFIG_MMU #endif /* CONFIG_MMU */ #endif /* __KERNEL__ */ #include <asm-generic/memory_model.h> #include <asm-generic/getorder.h> #endif /* _ASM_MICROBLAZE_PAGE_H */
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