diff options
Diffstat (limited to 'include/exec/cputlb.h')
| -rw-r--r-- | include/exec/cputlb.h | 263 |
1 files changed, 257 insertions, 6 deletions
diff --git a/include/exec/cputlb.h b/include/exec/cputlb.h index ef18642..03ed7e2 100644 --- a/include/exec/cputlb.h +++ b/include/exec/cputlb.h @@ -21,15 +21,266 @@ #define CPUTLB_H #include "exec/cpu-common.h" +#include "exec/hwaddr.h" +#include "exec/memattrs.h" +#include "exec/vaddr.h" -#ifdef CONFIG_TCG - -#if !defined(CONFIG_USER_ONLY) -/* cputlb.c */ +#if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY) void tlb_protect_code(ram_addr_t ram_addr); void tlb_unprotect_code(ram_addr_t ram_addr); #endif -#endif /* CONFIG_TCG */ - +#ifndef CONFIG_USER_ONLY +void tlb_reset_dirty(CPUState *cpu, uintptr_t start, uintptr_t length); +void tlb_reset_dirty_range_all(ram_addr_t start, ram_addr_t length); #endif + +/** + * tlb_set_page_full: + * @cpu: CPU context + * @mmu_idx: mmu index of the tlb to modify + * @addr: virtual address of the entry to add + * @full: the details of the tlb entry + * + * Add an entry to @cpu tlb index @mmu_idx. All of the fields of + * @full must be filled, except for xlat_section, and constitute + * the complete description of the translated page. + * + * This is generally called by the target tlb_fill function after + * having performed a successful page table walk to find the physical + * address and attributes for the translation. + * + * At most one entry for a given virtual address is permitted. Only a + * single TARGET_PAGE_SIZE region is mapped; @full->lg_page_size is only + * used by tlb_flush_page. + */ +void tlb_set_page_full(CPUState *cpu, int mmu_idx, vaddr addr, + CPUTLBEntryFull *full); + +/** + * tlb_set_page_with_attrs: + * @cpu: CPU to add this TLB entry for + * @addr: virtual address of page to add entry for + * @paddr: physical address of the page + * @attrs: memory transaction attributes + * @prot: access permissions (PAGE_READ/PAGE_WRITE/PAGE_EXEC bits) + * @mmu_idx: MMU index to insert TLB entry for + * @size: size of the page in bytes + * + * Add an entry to this CPU's TLB (a mapping from virtual address + * @addr to physical address @paddr) with the specified memory + * transaction attributes. This is generally called by the target CPU + * specific code after it has been called through the tlb_fill() + * entry point and performed a successful page table walk to find + * the physical address and attributes for the virtual address + * which provoked the TLB miss. + * + * At most one entry for a given virtual address is permitted. Only a + * single TARGET_PAGE_SIZE region is mapped; the supplied @size is only + * used by tlb_flush_page. + */ +void tlb_set_page_with_attrs(CPUState *cpu, vaddr addr, + hwaddr paddr, MemTxAttrs attrs, + int prot, int mmu_idx, vaddr size); + +/** + * tlb_set_page: + * + * This function is equivalent to calling tlb_set_page_with_attrs() + * with an @attrs argument of MEMTXATTRS_UNSPECIFIED. It's provided + * as a convenience for CPUs which don't use memory transaction attributes. + */ +void tlb_set_page(CPUState *cpu, vaddr addr, + hwaddr paddr, int prot, + int mmu_idx, vaddr size); + +#if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY) +/** + * tlb_flush_page: + * @cpu: CPU whose TLB should be flushed + * @addr: virtual address of page to be flushed + * + * Flush one page from the TLB of the specified CPU, for all + * MMU indexes. + */ +void tlb_flush_page(CPUState *cpu, vaddr addr); + +/** + * tlb_flush_page_all_cpus_synced: + * @cpu: src CPU of the flush + * @addr: virtual address of page to be flushed + * + * Flush one page from the TLB of all CPUs, for all + * MMU indexes. + * + * When this function returns, no CPUs will subsequently perform + * translations using the flushed TLBs. + */ +void tlb_flush_page_all_cpus_synced(CPUState *src, vaddr addr); + +/** + * tlb_flush: + * @cpu: CPU whose TLB should be flushed + * + * Flush the entire TLB for the specified CPU. Most CPU architectures + * allow the implementation to drop entries from the TLB at any time + * so this is generally safe. If more selective flushing is required + * use one of the other functions for efficiency. + */ +void tlb_flush(CPUState *cpu); + +/** + * tlb_flush_all_cpus_synced: + * @cpu: src CPU of the flush + * + * Flush the entire TLB for all CPUs, for all MMU indexes. + * + * When this function returns, no CPUs will subsequently perform + * translations using the flushed TLBs. + */ +void tlb_flush_all_cpus_synced(CPUState *src_cpu); + +/** + * tlb_flush_page_by_mmuidx: + * @cpu: CPU whose TLB should be flushed + * @addr: virtual address of page to be flushed + * @idxmap: bitmap of MMU indexes to flush + * + * Flush one page from the TLB of the specified CPU, for the specified + * MMU indexes. + */ +void tlb_flush_page_by_mmuidx(CPUState *cpu, vaddr addr, + uint16_t idxmap); + +/** + * tlb_flush_page_by_mmuidx_all_cpus_synced: + * @cpu: Originating CPU of the flush + * @addr: virtual address of page to be flushed + * @idxmap: bitmap of MMU indexes to flush + * + * Flush one page from the TLB of all CPUs, for the specified + * MMU indexes. + * + * When this function returns, no CPUs will subsequently perform + * translations using the flushed TLBs. + */ +void tlb_flush_page_by_mmuidx_all_cpus_synced(CPUState *cpu, vaddr addr, + uint16_t idxmap); + +/** + * tlb_flush_by_mmuidx: + * @cpu: CPU whose TLB should be flushed + * @wait: If true ensure synchronisation by exiting the cpu_loop + * @idxmap: bitmap of MMU indexes to flush + * + * Flush all entries from the TLB of the specified CPU, for the specified + * MMU indexes. + */ +void tlb_flush_by_mmuidx(CPUState *cpu, uint16_t idxmap); + +/** + * tlb_flush_by_mmuidx_all_cpus_synced: + * @cpu: Originating CPU of the flush + * @idxmap: bitmap of MMU indexes to flush + * + * Flush all entries from the TLB of all CPUs, for the specified + * MMU indexes. + * + * When this function returns, no CPUs will subsequently perform + * translations using the flushed TLBs. + */ +void tlb_flush_by_mmuidx_all_cpus_synced(CPUState *cpu, uint16_t idxmap); + +/** + * tlb_flush_page_bits_by_mmuidx + * @cpu: CPU whose TLB should be flushed + * @addr: virtual address of page to be flushed + * @idxmap: bitmap of mmu indexes to flush + * @bits: number of significant bits in address + * + * Similar to tlb_flush_page_mask, but with a bitmap of indexes. + */ +void tlb_flush_page_bits_by_mmuidx(CPUState *cpu, vaddr addr, + uint16_t idxmap, unsigned bits); + +/* Similarly, with broadcast and syncing. */ +void tlb_flush_page_bits_by_mmuidx_all_cpus_synced(CPUState *cpu, vaddr addr, + uint16_t idxmap, + unsigned bits); + +/** + * tlb_flush_range_by_mmuidx + * @cpu: CPU whose TLB should be flushed + * @addr: virtual address of the start of the range to be flushed + * @len: length of range to be flushed + * @idxmap: bitmap of mmu indexes to flush + * @bits: number of significant bits in address + * + * For each mmuidx in @idxmap, flush all pages within [@addr,@addr+@len), + * comparing only the low @bits worth of each virtual page. + */ +void tlb_flush_range_by_mmuidx(CPUState *cpu, vaddr addr, + vaddr len, uint16_t idxmap, + unsigned bits); + +/* Similarly, with broadcast and syncing. */ +void tlb_flush_range_by_mmuidx_all_cpus_synced(CPUState *cpu, + vaddr addr, + vaddr len, + uint16_t idxmap, + unsigned bits); +#else +static inline void tlb_flush_page(CPUState *cpu, vaddr addr) +{ +} +static inline void tlb_flush_page_all_cpus_synced(CPUState *src, vaddr addr) +{ +} +static inline void tlb_flush(CPUState *cpu) +{ +} +static inline void tlb_flush_all_cpus_synced(CPUState *src_cpu) +{ +} +static inline void tlb_flush_page_by_mmuidx(CPUState *cpu, + vaddr addr, uint16_t idxmap) +{ +} + +static inline void tlb_flush_by_mmuidx(CPUState *cpu, uint16_t idxmap) +{ +} +static inline void tlb_flush_page_by_mmuidx_all_cpus_synced(CPUState *cpu, + vaddr addr, + uint16_t idxmap) +{ +} +static inline void tlb_flush_by_mmuidx_all_cpus_synced(CPUState *cpu, + uint16_t idxmap) +{ +} +static inline void tlb_flush_page_bits_by_mmuidx(CPUState *cpu, + vaddr addr, + uint16_t idxmap, + unsigned bits) +{ +} +static inline void +tlb_flush_page_bits_by_mmuidx_all_cpus_synced(CPUState *cpu, vaddr addr, + uint16_t idxmap, unsigned bits) +{ +} +static inline void tlb_flush_range_by_mmuidx(CPUState *cpu, vaddr addr, + vaddr len, uint16_t idxmap, + unsigned bits) +{ +} +static inline void tlb_flush_range_by_mmuidx_all_cpus_synced(CPUState *cpu, + vaddr addr, + vaddr len, + uint16_t idxmap, + unsigned bits) +{ +} +#endif /* CONFIG_TCG && !CONFIG_USER_ONLY */ +#endif /* CPUTLB_H */ |