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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-05-09 21:42:09 +02:00
Thomas Huth
117c537cc7
While the GCC and Clang compilers already define __ASSEMBLER__ automatically when compiling assembly code, __ASSEMBLY__ is a macro that only gets defined by the Makefiles in the kernel. This can be very confusing when switching between userspace and kernelspace coding, or when dealing with uapi headers that rather should use __ASSEMBLER__ instead. So let's standardize on the __ASSEMBLER__ macro that is provided by the compilers now. This is a completely mechanical patch (done with a simple "sed -i" statement). Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Guo Ren (Alibaba DAMO Academy) <guoren@kernel.org>
89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_CSKY_PAGE_H
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#define __ASM_CSKY_PAGE_H
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#include <asm/setup.h>
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#include <asm/cache.h>
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#include <linux/const.h>
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#include <vdso/page.h>
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#define THREAD_SIZE (PAGE_SIZE * 2)
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#define THREAD_MASK (~(THREAD_SIZE - 1))
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#define THREAD_SHIFT (PAGE_SHIFT + 1)
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/*
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* For C-SKY "User-space:Kernel-space" is "2GB:2GB" fixed by hardware and there
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* are two segment registers (MSA0 + MSA1) to mapping 512MB + 512MB physical
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* address region. We use them mapping kernel 1GB direct-map address area and
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* for more than 1GB of memory we use highmem.
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*/
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#define PAGE_OFFSET CONFIG_PAGE_OFFSET
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#define SSEG_SIZE 0x20000000
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#define LOWMEM_LIMIT (SSEG_SIZE * 2)
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#define PHYS_OFFSET_OFFSET (CONFIG_DRAM_BASE & (SSEG_SIZE - 1))
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#ifndef __ASSEMBLER__
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#include <linux/pfn.h>
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#define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET && \
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(void *)(kaddr) < high_memory)
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extern void *memset(void *dest, int c, size_t l);
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extern void *memcpy(void *to, const void *from, size_t l);
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#define clear_page(page) memset((page), 0, PAGE_SIZE)
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#define copy_page(to, from) memcpy((to), (from), PAGE_SIZE)
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struct page;
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#include <abi/page.h>
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struct vm_area_struct;
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typedef struct { unsigned long pte_low; } pte_t;
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#define pte_val(x) ((x).pte_low)
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typedef struct { unsigned long pgd; } pgd_t;
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typedef struct { unsigned long pgprot; } pgprot_t;
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typedef struct page *pgtable_t;
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#define pgd_val(x) ((x).pgd)
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#define pgprot_val(x) ((x).pgprot)
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#define ptep_buddy(x) ((pte_t *)((unsigned long)(x) ^ sizeof(pte_t)))
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#define __pte(x) ((pte_t) { (x) })
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#define __pgd(x) ((pgd_t) { (x) })
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#define __pgprot(x) ((pgprot_t) { (x) })
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extern unsigned long va_pa_offset;
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#define ARCH_PFN_OFFSET PFN_DOWN(va_pa_offset + PHYS_OFFSET_OFFSET)
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#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET + va_pa_offset)
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#define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET - va_pa_offset))
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#define __pa_symbol(x) __pa(RELOC_HIDE((unsigned long)(x), 0))
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static inline unsigned long virt_to_pfn(const void *kaddr)
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{
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return __pa(kaddr) >> PAGE_SHIFT;
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}
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#define MAP_NR(x) PFN_DOWN((unsigned long)(x) - PAGE_OFFSET - \
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PHYS_OFFSET_OFFSET)
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#define virt_to_page(x) (mem_map + MAP_NR(x))
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#define pfn_to_kaddr(x) __va(PFN_PHYS(x))
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#include <asm-generic/memory_model.h>
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#include <asm-generic/getorder.h>
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#endif /* !__ASSEMBLER__ */
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#endif /* __ASM_CSKY_PAGE_H */
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