/* $NetBSD: pmap.h,v 1.71 2019/04/01 06:12:51 msaitoh Exp $ */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Ralph Campbell. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)pmap.h 8.1 (Berkeley) 6/10/93 */ /* * Copyright (c) 1987 Carnegie-Mellon University * * This code is derived from software contributed to Berkeley by * Ralph Campbell. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)pmap.h 8.1 (Berkeley) 6/10/93 */ #ifndef _MIPS_PMAP_H_ #define _MIPS_PMAP_H_ #ifdef _KERNEL_OPT #include "opt_multiprocessor.h" #include "opt_uvmhist.h" #include "opt_cputype.h" #endif #include #include #include #ifndef __BSD_PTENTRY_T__ #define __BSD_PTENTRY_T__ typedef uint32_t pt_entry_t; #define PRIxPTE PRIx32 #endif /* __BSD_PTENTRY_T__ */ #define KERNEL_PID 0 #if defined(__PMAP_PRIVATE) #include #include #define PMAP_VIRTUAL_CACHE_ALIASES #define PMAP_INVALID_SEGTAB_ADDRESS ((pmap_segtab_t *)NULL) #define PMAP_TLB_NEED_SHOOTDOWN #define PMAP_TLB_FLUSH_ASID_ON_RESET false #if UPAGES > 1 #define PMAP_TLB_WIRED_UPAGES MIPS3_TLB_WIRED_UPAGES #endif #define pmap_md_tlb_asid_max() (MIPS_TLB_NUM_PIDS - 1) #ifdef MULTIPROCESSOR #define PMAP_NO_PV_UNCACHED #endif /* * We need the pmap_segtab's to be aligned on MIPS*R2 so we can use the * EXT/INS instructions on their addresses. */ #if (MIPS32R2 + MIPS64R2 + MIPS64R2_RMIXL) > 0 #define PMAP_SEGTAB_ALIGN __aligned(sizeof(void *)*NSEGPG) __section(".data1") #endif #include void pmap_md_init(void); void pmap_md_icache_sync_all(void); void pmap_md_icache_sync_range_index(vaddr_t, vsize_t); void pmap_md_page_syncicache(struct vm_page *, const kcpuset_t *); bool pmap_md_vca_add(struct vm_page *, vaddr_t, pt_entry_t *); void pmap_md_vca_clean(struct vm_page *, int); void pmap_md_vca_remove(struct vm_page *, vaddr_t, bool, bool); bool pmap_md_ok_to_steal_p(const uvm_physseg_t, size_t); bool pmap_md_tlb_check_entry(void *, vaddr_t, tlb_asid_t, pt_entry_t); static inline bool pmap_md_virtual_cache_aliasing_p(void) { return MIPS_CACHE_VIRTUAL_ALIAS; } static inline vsize_t pmap_md_cache_prefer_mask(void) { return MIPS_HAS_R4K_MMU ? mips_cache_info.mci_cache_prefer_mask : 0; } #endif /* __PMAP_PRIVATE */ struct tlbmask { vaddr_t tlb_hi; #ifdef __mips_o32 uint32_t tlb_lo0; uint32_t tlb_lo1; #else uint64_t tlb_lo0; uint64_t tlb_lo1; #endif uint32_t tlb_mask; }; #ifdef _LP64 #define PMAP_SEGTABSIZE NSEGPG #else #define PMAP_SEGTABSIZE (1 << (31 - SEGSHIFT)) #endif #include #include #include #include #ifdef _KERNEL /* * Select CCA to use for unmanaged pages. */ #define PMAP_CCA_FOR_PA(pa) CCA_UNCACHED /* uncached */ #if defined(_MIPS_PADDR_T_64BIT) || defined(_LP64) #define PGC_NOCACHE 0x4000000000000000ULL #define PGC_PREFETCH 0x2000000000000000ULL #endif #if defined(__PMAP_PRIVATE) #include #endif /* * The user address space is 2Gb (0x0 - 0x80000000). * User programs are laid out in memory as follows: * address * USRTEXT 0x00001000 * USRDATA USRTEXT + text_size * USRSTACK 0x7FFFFFFF * * The user address space is mapped using a two level structure where * virtual address bits 30..22 are used to index into a segment table which * points to a page worth of PTEs (4096 page can hold 1024 PTEs). * Bits 21..12 are then used to index a PTE which describes a page within * a segment. * * The wired entries in the TLB will contain the following: * 0-1 (UPAGES) for curproc user struct and kernel stack. * * Note: The kernel doesn't use the same data structures as user programs. * All the PTE entries are stored in a single array in Sysmap which is * dynamically allocated at boot time. */ #define pmap_phys_address(x) mips_ptob(x) /* * Bootstrap the system enough to run with virtual memory. */ void pmap_bootstrap(void); void pmap_md_alloc_ephemeral_address_space(struct cpu_info *); void pmap_procwr(struct proc *, vaddr_t, size_t); #define PMAP_NEED_PROCWR /* * pmap_prefer() helps reduce virtual-coherency exceptions in * the virtually-indexed cache on mips3 CPUs. */ #ifdef MIPS3_PLUS #define PMAP_PREFER(pa, va, sz, td) pmap_prefer((pa), (va), (sz), (td)) void pmap_prefer(vaddr_t, vaddr_t *, vsize_t, int); #endif /* MIPS3_PLUS */ #define PMAP_ENABLE_PMAP_KMPAGE /* enable the PMAP_KMPAGE flag */ // these use register_t so we can pass XKPHYS addresses to them on N32 bool pmap_md_direct_mapped_vaddr_p(register_t); paddr_t pmap_md_direct_mapped_vaddr_to_paddr(register_t); bool pmap_md_io_vaddr_p(vaddr_t); /* * Alternate mapping hooks for pool pages. Avoids thrashing the TLB. */ vaddr_t pmap_md_map_poolpage(paddr_t, size_t); paddr_t pmap_md_unmap_poolpage(vaddr_t, size_t); struct vm_page *pmap_md_alloc_poolpage(int); /* * Other hooks for the pool allocator. */ paddr_t pmap_md_pool_vtophys(vaddr_t); vaddr_t pmap_md_pool_phystov(paddr_t); #define POOL_VTOPHYS(va) pmap_md_pool_vtophys((vaddr_t)va) #define POOL_PHYSTOV(pa) pmap_md_pool_phystov((paddr_t)pa) #ifdef MIPS64_SB1 /* uncached accesses are bad; all accesses should be cached (and coherent) */ #undef PMAP_PAGEIDLEZERO #define PMAP_PAGEIDLEZERO(pa) (pmap_zero_page(pa), true) int sbmips_cca_for_pa(paddr_t); #undef PMAP_CCA_FOR_PA #define PMAP_CCA_FOR_PA(pa) sbmips_cca_for_pa(pa) #endif #endif /* _KERNEL */ #endif /* _MIPS_PMAP_H_ */