| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Alexandre Ghiti | 420 | 32.89% | 3 | 15.79% |
| Palmer Dabbelt | 301 | 23.57% | 1 | 5.26% |
| Qinglin Pan | 292 | 22.87% | 1 | 5.26% |
| Heiko Stübner | 144 | 11.28% | 3 | 15.79% |
| Nickhu | 35 | 2.74% | 1 | 5.26% |
| Steven Price | 28 | 2.19% | 1 | 5.26% |
| Anup Patel | 21 | 1.64% | 1 | 5.26% |
| tongtiangen | 11 | 0.86% | 2 | 10.53% |
| Nanyong Sun | 11 | 0.86% | 3 | 15.79% |
| Gary Guo | 7 | 0.55% | 1 | 5.26% |
| Aneesh Kumar K.V | 5 | 0.39% | 1 | 5.26% |
| Thomas Gleixner | 2 | 0.16% | 1 | 5.26% |
| Total | 1277 | 19 |
/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2012 Regents of the University of California */ #ifndef _ASM_RISCV_PGTABLE_64_H #define _ASM_RISCV_PGTABLE_64_H #include <linux/bits.h> #include <linux/const.h> #include <asm/errata_list.h> extern bool pgtable_l4_enabled; extern bool pgtable_l5_enabled; #define PGDIR_SHIFT_L3 30 #define PGDIR_SHIFT_L4 39 #define PGDIR_SHIFT_L5 48 #define PGDIR_SIZE_L3 (_AC(1, UL) << PGDIR_SHIFT_L3) #define PGDIR_SHIFT (pgtable_l5_enabled ? PGDIR_SHIFT_L5 : \ (pgtable_l4_enabled ? PGDIR_SHIFT_L4 : PGDIR_SHIFT_L3)) /* Size of region mapped by a page global directory */ #define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT) #define PGDIR_MASK (~(PGDIR_SIZE - 1)) /* p4d is folded into pgd in case of 4-level page table */ #define P4D_SHIFT_L3 30 #define P4D_SHIFT_L4 39 #define P4D_SHIFT_L5 39 #define P4D_SHIFT (pgtable_l5_enabled ? P4D_SHIFT_L5 : \ (pgtable_l4_enabled ? P4D_SHIFT_L4 : P4D_SHIFT_L3)) #define P4D_SIZE (_AC(1, UL) << P4D_SHIFT) #define P4D_MASK (~(P4D_SIZE - 1)) /* pud is folded into pgd in case of 3-level page table */ #define PUD_SHIFT 30 #define PUD_SIZE (_AC(1, UL) << PUD_SHIFT) #define PUD_MASK (~(PUD_SIZE - 1)) #define PMD_SHIFT 21 /* Size of region mapped by a page middle directory */ #define PMD_SIZE (_AC(1, UL) << PMD_SHIFT) #define PMD_MASK (~(PMD_SIZE - 1)) /* Page 4th Directory entry */ typedef struct { unsigned long p4d; } p4d_t; #define p4d_val(x) ((x).p4d) #define __p4d(x) ((p4d_t) { (x) }) #define PTRS_PER_P4D (PAGE_SIZE / sizeof(p4d_t)) /* Page Upper Directory entry */ typedef struct { unsigned long pud; } pud_t; #define pud_val(x) ((x).pud) #define __pud(x) ((pud_t) { (x) }) #define PTRS_PER_PUD (PAGE_SIZE / sizeof(pud_t)) /* Page Middle Directory entry */ typedef struct { unsigned long pmd; } pmd_t; #define pmd_val(x) ((x).pmd) #define __pmd(x) ((pmd_t) { (x) }) #define PTRS_PER_PMD (PAGE_SIZE / sizeof(pmd_t)) /* * rv64 PTE format: * | 63 | 62 61 | 60 54 | 53 10 | 9 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 * N MT RSV PFN reserved for SW D A G U X W R V */ #define _PAGE_PFN_MASK GENMASK(53, 10) /* * [62:61] Svpbmt Memory Type definitions: * * 00 - PMA Normal Cacheable, No change to implied PMA memory type * 01 - NC Non-cacheable, idempotent, weakly-ordered Main Memory * 10 - IO Non-cacheable, non-idempotent, strongly-ordered I/O memory * 11 - Rsvd Reserved for future standard use */ #define _PAGE_NOCACHE_SVPBMT (1UL << 61) #define _PAGE_IO_SVPBMT (1UL << 62) #define _PAGE_MTMASK_SVPBMT (_PAGE_NOCACHE_SVPBMT | _PAGE_IO_SVPBMT) /* * [63:59] T-Head Memory Type definitions: * * 00000 - NC Weakly-ordered, Non-cacheable, Non-bufferable, Non-shareable, Non-trustable * 01110 - PMA Weakly-ordered, Cacheable, Bufferable, Shareable, Non-trustable * 10000 - IO Strongly-ordered, Non-cacheable, Non-bufferable, Non-shareable, Non-trustable */ #define _PAGE_PMA_THEAD ((1UL << 62) | (1UL << 61) | (1UL << 60)) #define _PAGE_NOCACHE_THEAD 0UL #define _PAGE_IO_THEAD (1UL << 63) #define _PAGE_MTMASK_THEAD (_PAGE_PMA_THEAD | _PAGE_IO_THEAD | (1UL << 59)) static inline u64 riscv_page_mtmask(void) { u64 val; ALT_SVPBMT(val, _PAGE_MTMASK); return val; } static inline u64 riscv_page_nocache(void) { u64 val; ALT_SVPBMT(val, _PAGE_NOCACHE); return val; } static inline u64 riscv_page_io(void) { u64 val; ALT_SVPBMT(val, _PAGE_IO); return val; } #define _PAGE_NOCACHE riscv_page_nocache() #define _PAGE_IO riscv_page_io() #define _PAGE_MTMASK riscv_page_mtmask() /* Set of bits to preserve across pte_modify() */ #define _PAGE_CHG_MASK (~(unsigned long)(_PAGE_PRESENT | _PAGE_READ | \ _PAGE_WRITE | _PAGE_EXEC | \ _PAGE_USER | _PAGE_GLOBAL | \ _PAGE_MTMASK)) static inline int pud_present(pud_t pud) { return (pud_val(pud) & _PAGE_PRESENT); } static inline int pud_none(pud_t pud) { return (pud_val(pud) == 0); } static inline int pud_bad(pud_t pud) { return !pud_present(pud); } #define pud_leaf pud_leaf static inline int pud_leaf(pud_t pud) { return pud_present(pud) && (pud_val(pud) & _PAGE_LEAF); } static inline int pud_user(pud_t pud) { return pud_val(pud) & _PAGE_USER; } static inline void set_pud(pud_t *pudp, pud_t pud) { *pudp = pud; } static inline void pud_clear(pud_t *pudp) { set_pud(pudp, __pud(0)); } static inline pud_t pfn_pud(unsigned long pfn, pgprot_t prot) { return __pud((pfn << _PAGE_PFN_SHIFT) | pgprot_val(prot)); } static inline unsigned long _pud_pfn(pud_t pud) { return __page_val_to_pfn(pud_val(pud)); } static inline pmd_t *pud_pgtable(pud_t pud) { return (pmd_t *)pfn_to_virt(__page_val_to_pfn(pud_val(pud))); } static inline struct page *pud_page(pud_t pud) { return pfn_to_page(__page_val_to_pfn(pud_val(pud))); } #define mm_p4d_folded mm_p4d_folded static inline bool mm_p4d_folded(struct mm_struct *mm) { if (pgtable_l5_enabled) return false; return true; } #define mm_pud_folded mm_pud_folded static inline bool mm_pud_folded(struct mm_struct *mm) { if (pgtable_l4_enabled) return false; return true; } #define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)) static inline pmd_t pfn_pmd(unsigned long pfn, pgprot_t prot) { unsigned long prot_val = pgprot_val(prot); ALT_THEAD_PMA(prot_val); return __pmd((pfn << _PAGE_PFN_SHIFT) | prot_val); } static inline unsigned long _pmd_pfn(pmd_t pmd) { return __page_val_to_pfn(pmd_val(pmd)); } #define mk_pmd(page, prot) pfn_pmd(page_to_pfn(page), prot) #define pmd_ERROR(e) \ pr_err("%s:%d: bad pmd %016lx.\n", __FILE__, __LINE__, pmd_val(e)) #define pud_ERROR(e) \ pr_err("%s:%d: bad pud %016lx.\n", __FILE__, __LINE__, pud_val(e)) #define p4d_ERROR(e) \ pr_err("%s:%d: bad p4d %016lx.\n", __FILE__, __LINE__, p4d_val(e)) static inline void set_p4d(p4d_t *p4dp, p4d_t p4d) { if (pgtable_l4_enabled) *p4dp = p4d; else set_pud((pud_t *)p4dp, (pud_t){ p4d_val(p4d) }); } static inline int p4d_none(p4d_t p4d) { if (pgtable_l4_enabled) return (p4d_val(p4d) == 0); return 0; } static inline int p4d_present(p4d_t p4d) { if (pgtable_l4_enabled) return (p4d_val(p4d) & _PAGE_PRESENT); return 1; } static inline int p4d_bad(p4d_t p4d) { if (pgtable_l4_enabled) return !p4d_present(p4d); return 0; } static inline void p4d_clear(p4d_t *p4d) { if (pgtable_l4_enabled) set_p4d(p4d, __p4d(0)); } static inline p4d_t pfn_p4d(unsigned long pfn, pgprot_t prot) { return __p4d((pfn << _PAGE_PFN_SHIFT) | pgprot_val(prot)); } static inline unsigned long _p4d_pfn(p4d_t p4d) { return __page_val_to_pfn(p4d_val(p4d)); } static inline pud_t *p4d_pgtable(p4d_t p4d) { if (pgtable_l4_enabled) return (pud_t *)pfn_to_virt(__page_val_to_pfn(p4d_val(p4d))); return (pud_t *)pud_pgtable((pud_t) { p4d_val(p4d) }); } #define p4d_page_vaddr(p4d) ((unsigned long)p4d_pgtable(p4d)) static inline struct page *p4d_page(p4d_t p4d) { return pfn_to_page(__page_val_to_pfn(p4d_val(p4d))); } #define pud_index(addr) (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)) #define pud_offset pud_offset static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address) { if (pgtable_l4_enabled) return p4d_pgtable(*p4d) + pud_index(address); return (pud_t *)p4d; } static inline void set_pgd(pgd_t *pgdp, pgd_t pgd) { if (pgtable_l5_enabled) *pgdp = pgd; else set_p4d((p4d_t *)pgdp, (p4d_t){ pgd_val(pgd) }); } static inline int pgd_none(pgd_t pgd) { if (pgtable_l5_enabled) return (pgd_val(pgd) == 0); return 0; } static inline int pgd_present(pgd_t pgd) { if (pgtable_l5_enabled) return (pgd_val(pgd) & _PAGE_PRESENT); return 1; } static inline int pgd_bad(pgd_t pgd) { if (pgtable_l5_enabled) return !pgd_present(pgd); return 0; } static inline void pgd_clear(pgd_t *pgd) { if (pgtable_l5_enabled) set_pgd(pgd, __pgd(0)); } static inline p4d_t *pgd_pgtable(pgd_t pgd) { if (pgtable_l5_enabled) return (p4d_t *)pfn_to_virt(__page_val_to_pfn(pgd_val(pgd))); return (p4d_t *)p4d_pgtable((p4d_t) { pgd_val(pgd) }); } #define pgd_page_vaddr(pgd) ((unsigned long)pgd_pgtable(pgd)) static inline struct page *pgd_page(pgd_t pgd) { return pfn_to_page(__page_val_to_pfn(pgd_val(pgd))); } #define pgd_page(pgd) pgd_page(pgd) #define p4d_index(addr) (((addr) >> P4D_SHIFT) & (PTRS_PER_P4D - 1)) #define p4d_offset p4d_offset static inline p4d_t *p4d_offset(pgd_t *pgd, unsigned long address) { if (pgtable_l5_enabled) return pgd_pgtable(*pgd) + p4d_index(address); return (p4d_t *)pgd; } #endif /* _ASM_RISCV_PGTABLE_64_H */
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