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66 lines
2.0 KiB
66 lines
2.0 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Port on Texas Instruments TMS320C6x architecture |
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* |
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* Copyright (C) 2004, 2009, 2010 Texas Instruments Incorporated |
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* Author: Aurelien Jacquiot ([email protected]) |
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*/ |
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#ifndef _ASM_C6X_PGTABLE_H |
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#define _ASM_C6X_PGTABLE_H |
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#include <asm-generic/pgtable-nopud.h> |
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#include <asm/setup.h> |
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#include <asm/page.h> |
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/* |
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* All 32bit addresses are effectively valid for vmalloc... |
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* Sort of meaningless for non-VM targets. |
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*/ |
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#define VMALLOC_START 0 |
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#define VMALLOC_END 0xffffffff |
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#define pgd_present(pgd) (1) |
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#define pgd_none(pgd) (0) |
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#define pgd_bad(pgd) (0) |
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#define pgd_clear(pgdp) |
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#define kern_addr_valid(addr) (1) |
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#define pmd_none(x) (!pmd_val(x)) |
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#define pmd_present(x) (pmd_val(x)) |
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#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0) |
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#define pmd_bad(x) (pmd_val(x) & ~PAGE_MASK) |
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#define PAGE_NONE __pgprot(0) /* these mean nothing to NO_MM */ |
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#define PAGE_SHARED __pgprot(0) /* these mean nothing to NO_MM */ |
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#define PAGE_COPY __pgprot(0) /* these mean nothing to NO_MM */ |
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#define PAGE_READONLY __pgprot(0) /* these mean nothing to NO_MM */ |
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#define PAGE_KERNEL __pgprot(0) /* these mean nothing to NO_MM */ |
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#define pgprot_noncached(prot) (prot) |
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extern void paging_init(void); |
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#define __swp_type(x) (0) |
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#define __swp_offset(x) (0) |
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#define __swp_entry(typ, off) ((swp_entry_t) { ((typ) | ((off) << 7)) }) |
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#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) |
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#define __swp_entry_to_pte(x) ((pte_t) { (x).val }) |
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#define set_pte(pteptr, pteval) (*(pteptr) = pteval) |
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#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval) |
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/* |
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* ZERO_PAGE is a global shared page that is always zero: used |
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* for zero-mapped memory areas etc.. |
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*/ |
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#define ZERO_PAGE(vaddr) virt_to_page(empty_zero_page) |
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extern unsigned long empty_zero_page; |
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#define swapper_pg_dir ((pgd_t *) 0) |
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/* |
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* c6x is !MMU, so define the simpliest implementation |
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*/ |
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#define pgprot_writecombine pgprot_noncached |
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#endif /* _ASM_C6X_PGTABLE_H */
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