/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2005 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* * UNIX machine dependent virtual memory support. */ #ifndef _VM_DEP_H #define _VM_DEP_H #pragma ident "%Z%%M% %I% %E% SMI" #ifdef __cplusplus extern "C" { #endif #include #include /* * WARNING: vm_dep.h is included by files in common. As such, macros * dependent upon PTE36 such as LARGEPAGESIZE cannot be used in this file. */ #define GETTICK() tsc_read() /* memranges in descending order */ extern pfn_t *memranges; #define MEMRANGEHI(mtype) \ ((mtype > 0) ? memranges[mtype - 1] - 1: physmax) #define MEMRANGELO(mtype) (memranges[mtype]) /* * combined memory ranges from mnode and memranges[] to manage single * mnode/mtype dimension in the page lists. */ typedef struct { pfn_t mnr_pfnlo; pfn_t mnr_pfnhi; int mnr_mnode; int mnr_memrange; /* index into memranges[] */ /* maintain page list stats */ pgcnt_t mnr_mt_pgmax; /* mnode/mtype max page cnt */ pgcnt_t mnr_mt_clpgcnt; /* cache list cnt */ pgcnt_t mnr_mt_flpgcnt; /* free list cnt - small pages */ pgcnt_t mnr_mt_lgpgcnt; /* free list cnt - large pages */ #ifdef DEBUG struct mnr_mts { /* mnode/mtype szc stats */ pgcnt_t mnr_mts_pgcnt; int mnr_mts_colors; pgcnt_t *mnr_mtsc_pgcnt; } *mnr_mts; #endif } mnoderange_t; #ifdef DEBUG #define PLCNT_SZ(ctrs_sz) { \ int szc, colors; \ ctrs_sz += mnoderangecnt * sizeof (struct mnr_mts) * \ mmu_page_sizes; \ for (szc = 0; szc < mmu_page_sizes; szc++) { \ colors = page_get_pagecolors(szc); \ ctrs_sz += mnoderangecnt * sizeof (pgcnt_t) * colors; \ } \ } #define PLCNT_INIT(addr) { \ int mt, szc, colors; \ for (mt = 0; mt < mnoderangecnt; mt++) { \ mnoderanges[mt].mnr_mts = (struct mnr_mts *)addr; \ addr += (sizeof (struct mnr_mts) * mmu_page_sizes); \ for (szc = 0; szc < mmu_page_sizes; szc++) { \ colors = page_get_pagecolors(szc); \ mnoderanges[mt].mnr_mts[szc].mnr_mts_colors = \ colors; \ mnoderanges[mt].mnr_mts[szc].mnr_mtsc_pgcnt = \ (pgcnt_t *)addr; \ addr += (sizeof (pgcnt_t) * colors); \ } \ } \ } #define PLCNT_DO(pp, mtype, szc, cnt, flags) { \ int bin = PP_2_BIN(pp); \ if (flags & PG_LIST_ISINIT) \ mnoderanges[mtype].mnr_mt_pgmax += cnt; \ ASSERT((flags & PG_LIST_ISCAGE) == 0); \ if (flags & PG_CACHE_LIST) \ atomic_add_long(&mnoderanges[mtype]. \ mnr_mt_clpgcnt, cnt); \ else if (szc) \ atomic_add_long(&mnoderanges[mtype]. \ mnr_mt_lgpgcnt, cnt); \ else \ atomic_add_long(&mnoderanges[mtype]. \ mnr_mt_flpgcnt, cnt); \ atomic_add_long(&mnoderanges[mtype].mnr_mts[szc]. \ mnr_mts_pgcnt, cnt); \ atomic_add_long(&mnoderanges[mtype].mnr_mts[szc]. \ mnr_mtsc_pgcnt[bin], cnt); \ } #else #define PLCNT_SZ(ctrs_sz) #define PLCNT_INIT(base) #define PLCNT_DO(pp, mtype, szc, cnt, flags) { \ if (flags & PG_LIST_ISINIT) \ mnoderanges[mtype].mnr_mt_pgmax += cnt; \ if (flags & PG_CACHE_LIST) \ atomic_add_long(&mnoderanges[mtype]. \ mnr_mt_clpgcnt, cnt); \ else if (szc) \ atomic_add_long(&mnoderanges[mtype]. \ mnr_mt_lgpgcnt, cnt); \ else \ atomic_add_long(&mnoderanges[mtype]. \ mnr_mt_flpgcnt, cnt); \ } #endif #define PLCNT_INCR(pp, mnode, mtype, szc, flags) { \ long cnt = (1 << PAGE_BSZS_SHIFT(szc)); \ ASSERT(mtype == PP_2_MTYPE(pp)); \ if (physmax4g && mtype <= mtype4g) \ atomic_add_long(&freemem4g, cnt); \ if (flags & PG_LIST_ISINIT) { \ if (physmax4g && mtype <= mtype4g) \ maxmem4g += cnt; \ } \ PLCNT_DO(pp, mtype, szc, cnt, flags); \ } #define PLCNT_DECR(pp, mnode, mtype, szc, flags) { \ long cnt = ((-1) << PAGE_BSZS_SHIFT(szc)); \ ASSERT(mtype == PP_2_MTYPE(pp)); \ if (physmax4g && mtype <= mtype4g) \ atomic_add_long(&freemem4g, cnt); \ PLCNT_DO(pp, mtype, szc, cnt, flags); \ } /* * macros to update page list max counts. no-op on x86. */ #define PLCNT_MAX_INCR(pp, mnode, mtype, szc) #define PLCNT_MAX_DECR(pp, mnode, mtype, szc) extern mnoderange_t *mnoderanges; extern int mnoderangecnt; extern int mtype4g; /* * 4g memory management variables for systems with more than 4g of memory: * * physical memory below 4g is required for 32bit dma devices and, currently, * for kmem memory. On systems with more than 4g of memory, the pool of memory * below 4g can be depleted without any paging activity given that there is * likely to be sufficient memory above 4g. * * physmax4g is set true if the largest pfn is over 4g. The rest of the * 4g memory management code is enabled only when physmax4g is true. * * maxmem4g is the count of the maximum number of pages on the page lists * with physical addresses below 4g. It can be a lot less then 4g given that * BIOS may reserve large chunks of space below 4g for hot plug pci devices, * agp aperture etc. * * freemem4g maintains the count of the number of available pages on the * page lists with physical addresses below 4g. * * DESFREE4G specifies the desired amount of below 4g memory. It defaults to * 6% (desfree4gshift = 4) of maxmem4g. * * RESTRICT4G_ALLOC returns true if freemem4g falls below DESFREE4G * and the amount of physical memory above 4g is greater than freemem4g. * In this case, page_get_* routines will restrict below 4g allocations * for requests that don't specifically require it. */ extern int physmax4g; extern pgcnt_t maxmem4g; extern pgcnt_t freemem4g; extern int lotsfree4gshift; extern int desfree4gshift; #define LOTSFREE4G (maxmem4g >> lotsfree4gshift) #define DESFREE4G (maxmem4g >> desfree4gshift) #define RESTRICT4G_ALLOC \ (physmax4g && (freemem4g < DESFREE4G) && ((freemem4g << 1) < freemem)) extern int restricted_kmemalloc; extern int memrange_num(pfn_t); extern int pfn_2_mtype(pfn_t); extern int mtype_func(int, int, uint_t); extern int mnode_pgcnt(int); #define NUM_MEM_RANGES 4 /* memory range types */ /* * Per page size free lists. Allocated dynamically. * dimensions [mtype][mmu_page_sizes][colors] * * mtype specifies a physical memory range with a unique mnode. */ extern page_t ****page_freelists; #define PAGE_FREELISTS(mnode, szc, color, mtype) \ (*(page_freelists[mtype][szc] + (color))) /* * For now there is only a single size cache list. Allocated dynamically. * dimensions [mtype][colors] * * mtype specifies a physical memory range with a unique mnode. */ extern page_t ***page_cachelists; #define PAGE_CACHELISTS(mnode, color, mtype) \ (*(page_cachelists[mtype] + (color))) /* * There are mutexes for both the page freelist * and the page cachelist. We want enough locks to make contention * reasonable, but not too many -- otherwise page_freelist_lock() gets * so expensive that it becomes the bottleneck! */ #define NPC_MUTEX 16 extern kmutex_t *fpc_mutex[NPC_MUTEX]; extern kmutex_t *cpc_mutex[NPC_MUTEX]; extern page_t *page_get_mnode_freelist(int, uint_t, int, uchar_t, uint_t); extern page_t *page_get_mnode_cachelist(uint_t, uint_t, int, int); /* Find the bin for the given page if it was of size szc */ #define PP_2_BIN_SZC(pp, szc) \ (((pp->p_pagenum) & page_colors_mask) >> \ (hw_page_array[szc].hp_shift - hw_page_array[0].hp_shift)) #define PP_2_BIN(pp) (PP_2_BIN_SZC(pp, pp->p_szc)) #define PP_2_MEM_NODE(pp) (PFN_2_MEM_NODE(pp->p_pagenum)) #define PP_2_MTYPE(pp) (pfn_2_mtype(pp->p_pagenum)) #define PP_2_SZC(pp) (pp->p_szc) #define SZCPAGES(szc) (1 << PAGE_BSZS_SHIFT(szc)) #define PFN_BASE(pfnum, szc) (pfnum & ~(SZCPAGES(szc) - 1)) extern struct cpu cpus[]; #define CPU0 cpus #if defined(__amd64) /* * set the mtype range (called from page_get_{free,cache}list) * - set range to above 4g if the system has more than 4g of memory and the * amount of memory below 4g runs low otherwise set range to all of memory * starting from the hi pfns. * * page_get_anylist gets its mtype range from the specified ddi_dma_attr_t. */ #define MTYPE_INIT(mtype, vp, vaddr, flags) { \ mtype = mnoderangecnt - 1; \ if (RESTRICT4G_ALLOC) { \ VM_STAT_ADD(vmm_vmstats.restrict4gcnt); \ /* here only for > 4g systems */ \ flags |= PGI_MT_RANGE4G; \ } else { \ flags |= PGI_MT_RANGE0; \ } \ } #elif defined(__i386) /* * set the mtype range * - kmem requests needs to be below 4g if restricted_kmemalloc is set. * - for non kmem requests, set range to above 4g if the amount of memory * below 4g runs low. */ #define MTYPE_INIT(mtype, vp, vaddr, flags) { \ if (restricted_kmemalloc && (vp) == &kvp && \ (caddr_t)(vaddr) >= kernelheap && \ (caddr_t)(vaddr) < ekernelheap) { \ ASSERT(physmax4g); \ mtype = mtype4g; \ flags |= PGI_MT_RANGE0; \ } else { \ mtype = mnoderangecnt - 1; \ if (RESTRICT4G_ALLOC) { \ VM_STAT_ADD(vmm_vmstats.restrict4gcnt); \ /* here only for > 4g systems */ \ flags |= PGI_MT_RANGE4G; \ } else { \ flags |= PGI_MT_RANGE0; \ } \ } \ } #endif /* __i386 */ /* * macros to loop through the mtype range (page_get_mnode_{free,cache,any}list, * and page_get_contig_pages) * * MTYPE_START sets the initial mtype. -1 if the mtype range specified does * not contain mnode. * * MTYPE_NEXT sets the next mtype. -1 if there are no more valid * mtype in the range. */ #define MTYPE_START(mnode, mtype, flags) \ (mtype = mtype_func(mnode, mtype, flags)) #define MTYPE_NEXT(mnode, mtype, flags) { \ if (flags & PGI_MT_RANGE) { \ mtype = mtype_func(mnode, mtype, flags | PGI_MT_NEXT); \ } else { \ mtype = -1; \ } \ } /* mtype init for page_get_replacement_page */ #define MTYPE_PGR_INIT(mtype, flags, pp, mnode) { \ mtype = mnoderangecnt - 1; \ flags |= PGI_MT_RANGE0; \ } #define MNODE_PGCNT(mnode) mnode_pgcnt(mnode) #define MNODETYPE_2_PFN(mnode, mtype, pfnlo, pfnhi) \ ASSERT(mnoderanges[mtype].mnr_mnode == mnode); \ pfnlo = mnoderanges[mtype].mnr_pfnlo; \ pfnhi = mnoderanges[mtype].mnr_pfnhi; #define PC_BIN_MUTEX(mnode, bin, flags) ((flags & PG_FREE_LIST) ? \ &fpc_mutex[(bin) & (NPC_MUTEX - 1)][mnode] : \ &cpc_mutex[(bin) & (NPC_MUTEX - 1)][mnode]) #define FPC_MUTEX(mnode, i) (&fpc_mutex[i][mnode]) #define CPC_MUTEX(mnode, i) (&cpc_mutex[i][mnode]) #ifdef DEBUG #define CHK_LPG(pp, szc) chk_lpg(pp, szc) extern void chk_lpg(page_t *, uchar_t); #else #define CHK_LPG(pp, szc) #endif #define FULL_REGION_CNT(rg_szc) \ (LEVEL_SIZE(rg_szc) >> LEVEL_SHIFT(rg_szc - 1)) /* Return the leader for this mapping size */ #define PP_GROUPLEADER(pp, szc) \ (&(pp)[-(int)((pp)->p_pagenum & (SZCPAGES(szc)-1))]) /* Return the root page for this page based on p_szc */ #define PP_PAGEROOT(pp) ((pp)->p_szc == 0 ? (pp) : \ PP_GROUPLEADER((pp), (pp)->p_szc)) /* * The counter base must be per page_counter element to prevent * races when re-indexing, and the base page size element should * be aligned on a boundary of the given region size. * * We also round up the number of pages spanned by the counters * for a given region to PC_BASE_ALIGN in certain situations to simplify * the coding for some non-performance critical routines. */ #define PC_BASE_ALIGN ((pfn_t)1 << PAGE_BSZS_SHIFT(MMU_PAGE_SIZES-1)) #define PC_BASE_ALIGN_MASK (PC_BASE_ALIGN - 1) /* * cpu/mmu-dependent vm variables */ extern uint_t mmu_page_sizes; extern uint_t mmu_exported_page_sizes; /* For x86, userszc is the same as the kernel's szc */ #define USERSZC_2_SZC(userszc) (userszc) #define SZC_2_USERSZC(szc) (szc) /* * for hw_page_map_t, sized to hold the ratio of large page to base * pagesize (1024 max) */ typedef short hpmctr_t; /* * get the setsize of the current cpu - assume homogenous for x86 */ extern int l2cache_sz, l2cache_linesz, l2cache_assoc; #define L2CACHE_ALIGN l2cache_linesz #define L2CACHE_ALIGN_MAX 64 #define CPUSETSIZE() \ (l2cache_assoc ? (l2cache_sz / l2cache_assoc) : MMU_PAGESIZE) /* * Return the log2(pagesize(szc) / MMU_PAGESIZE) --- or the shift count * for the number of base pages in this pagesize */ #define PAGE_BSZS_SHIFT(szc) (LEVEL_SHIFT(szc) - MMU_PAGESHIFT) /* * Internal PG_ flags. */ #define PGI_RELOCONLY 0x010000 /* opposite of PG_NORELOC */ #define PGI_NOCAGE 0x020000 /* cage is disabled */ #define PGI_PGCPHIPRI 0x040000 /* page_get_contig_page pri alloc */ #define PGI_PGCPSZC0 0x080000 /* relocate base pagesize page */ /* * PGI range flags - should not overlap PGI flags */ #define PGI_MT_RANGE0 0x1000000 /* mtype range to 0 */ #define PGI_MT_RANGE4G 0x2000000 /* mtype range to 4g */ #define PGI_MT_NEXT 0x4000000 /* get next mtype */ #define PGI_MT_RANGE (PGI_MT_RANGE0 | PGI_MT_RANGE4G) /* * hash as and addr to get a bin. */ #define AS_2_BIN(as, seg, vp, addr, bin) \ bin = ((((uintptr_t)(addr) >> PAGESHIFT) + ((uintptr_t)(as) >> 4)) \ & page_colors_mask) /* * cpu private vm data - accessed thru CPU->cpu_vm_data * vc_pnum_memseg: tracks last memseg visited in page_numtopp_nolock() * vc_pnext_memseg: tracks last memseg visited in page_nextn() * vc_kmptr: orignal unaligned kmem pointer for this vm_cpu_data_t * vc_kmsize: orignal kmem size for this vm_cpu_data_t */ typedef struct { struct memseg *vc_pnum_memseg; struct memseg *vc_pnext_memseg; void *vc_kmptr; size_t vc_kmsize; } vm_cpu_data_t; /* allocation size to ensure vm_cpu_data_t resides in its own cache line */ #define VM_CPU_DATA_PADSIZE \ (P2ROUNDUP(sizeof (vm_cpu_data_t), L2CACHE_ALIGN_MAX)) /* for boot cpu before kmem is initialized */ extern char vm_cpu_data0[]; /* * When a bin is empty, and we can't satisfy a color request correctly, * we scan. If we assume that the programs have reasonable spatial * behavior, then it will not be a good idea to use the adjacent color. * Using the adjacent color would result in virtually adjacent addresses * mapping into the same spot in the cache. So, if we stumble across * an empty bin, skip a bunch before looking. After the first skip, * then just look one bin at a time so we don't miss our cache on * every look. Be sure to check every bin. Page_create() will panic * if we miss a page. * * This also explains the `<=' in the for loops in both page_get_freelist() * and page_get_cachelist(). Since we checked the target bin, skipped * a bunch, then continued one a time, we wind up checking the target bin * twice to make sure we get all of them bins. */ #define BIN_STEP 19 #ifdef VM_STATS struct vmm_vmstats_str { ulong_t pgf_alloc[MMU_PAGE_SIZES]; /* page_get_freelist */ ulong_t pgf_allocok[MMU_PAGE_SIZES]; ulong_t pgf_allocokrem[MMU_PAGE_SIZES]; ulong_t pgf_allocfailed[MMU_PAGE_SIZES]; ulong_t pgf_allocdeferred; ulong_t pgf_allocretry[MMU_PAGE_SIZES]; ulong_t pgc_alloc; /* page_get_cachelist */ ulong_t pgc_allocok; ulong_t pgc_allocokrem; ulong_t pgc_allocokdeferred; ulong_t pgc_allocfailed; ulong_t pgcp_alloc[MMU_PAGE_SIZES]; /* page_get_contig_pages */ ulong_t pgcp_allocfailed[MMU_PAGE_SIZES]; ulong_t pgcp_allocempty[MMU_PAGE_SIZES]; ulong_t pgcp_allocok[MMU_PAGE_SIZES]; ulong_t ptcp[MMU_PAGE_SIZES]; /* page_trylock_contig_pages */ ulong_t ptcpfreethresh[MMU_PAGE_SIZES]; ulong_t ptcpfailexcl[MMU_PAGE_SIZES]; ulong_t ptcpfailszc[MMU_PAGE_SIZES]; ulong_t ptcpfailcage[MMU_PAGE_SIZES]; ulong_t ptcpok[MMU_PAGE_SIZES]; ulong_t pgmf_alloc[MMU_PAGE_SIZES]; /* page_get_mnode_freelist */ ulong_t pgmf_allocfailed[MMU_PAGE_SIZES]; ulong_t pgmf_allocempty[MMU_PAGE_SIZES]; ulong_t pgmf_allocok[MMU_PAGE_SIZES]; ulong_t pgmc_alloc; /* page_get_mnode_cachelist */ ulong_t pgmc_allocfailed; ulong_t pgmc_allocempty; ulong_t pgmc_allocok; ulong_t pladd_free[MMU_PAGE_SIZES]; /* page_list_add/sub */ ulong_t plsub_free[MMU_PAGE_SIZES]; ulong_t pladd_cache; ulong_t plsub_cache; ulong_t plsubpages_szcbig; ulong_t plsubpages_szc0; ulong_t pff_req[MMU_PAGE_SIZES]; /* page_freelist_fill */ ulong_t pff_demote[MMU_PAGE_SIZES]; ulong_t pff_coalok[MMU_PAGE_SIZES]; ulong_t ppr_reloc[MMU_PAGE_SIZES]; /* page_relocate */ ulong_t ppr_relocnoroot[MMU_PAGE_SIZES]; ulong_t ppr_reloc_replnoroot[MMU_PAGE_SIZES]; ulong_t ppr_relocnolock[MMU_PAGE_SIZES]; ulong_t ppr_relocnomem[MMU_PAGE_SIZES]; ulong_t ppr_relocok[MMU_PAGE_SIZES]; ulong_t page_ctrs_coalesce; /* page coalesce counter */ ulong_t page_ctrs_cands_skip; /* candidates useful */ ulong_t page_ctrs_changed; /* ctrs changed after locking */ ulong_t page_ctrs_failed; /* page_freelist_coalesce failed */ ulong_t page_ctrs_coalesce_all; /* page coalesce all counter */ ulong_t page_ctrs_cands_skip_all; /* candidates useful for all func */ ulong_t restrict4gcnt; }; extern struct vmm_vmstats_str vmm_vmstats; #endif /* VM_STATS */ extern size_t page_ctrs_sz(void); extern caddr_t page_ctrs_alloc(caddr_t); extern void page_ctr_sub(int, int, page_t *, int); extern page_t *page_freelist_fill(uchar_t, int, int, int, pfn_t); extern uint_t page_get_pagecolors(uint_t); #ifdef __cplusplus } #endif #endif /* _VM_DEP_H */