diff options
author | grehan <grehan@FreeBSD.org> | 2003-02-01 02:56:48 +0000 |
---|---|---|
committer | grehan <grehan@FreeBSD.org> | 2003-02-01 02:56:48 +0000 |
commit | a7fd524f8e3d3856a304114d97f9450fc2645b58 (patch) | |
tree | 54c27b668953acf041cca729844e4fa93c3e6c7c /sys/powerpc/aim | |
parent | af3bd9355b59b141e56fd2aef492d3d4e9f78f6b (diff) | |
download | FreeBSD-src-a7fd524f8e3d3856a304114d97f9450fc2645b58.zip FreeBSD-src-a7fd524f8e3d3856a304114d97f9450fc2645b58.tar.gz |
- add pmap_pagedaemon_waken variable
- remove dead code and fix warnings in pmap_zero_page/zero_page_area
- implement
pmap_clear_reference
pmap_ts_referenced
pmap_page_exists_quick
pmap_remove_all
- align pmap_qenter/qremove closer with i386 code
- fix vm_page locking in pmap_new_thread (from benno)
- add new parameter to pmap_clear_bit to return original
pte value
Approved by: benno
Diffstat (limited to 'sys/powerpc/aim')
-rw-r--r-- | sys/powerpc/aim/mmu_oea.c | 143 |
1 files changed, 96 insertions, 47 deletions
diff --git a/sys/powerpc/aim/mmu_oea.c b/sys/powerpc/aim/mmu_oea.c index df134b1..77f3451 100644 --- a/sys/powerpc/aim/mmu_oea.c +++ b/sys/powerpc/aim/mmu_oea.c @@ -203,6 +203,8 @@ vm_offset_t msgbuf_phys; vm_offset_t avail_start; vm_offset_t avail_end; +int pmap_pagedaemon_waken; + /* * Map of physical memory regions. */ @@ -317,7 +319,7 @@ static void pmap_pa_map(struct pvo_entry *, vm_offset_t, static void pmap_pa_unmap(struct pvo_entry *, struct pte *, int *); static void pmap_syncicache(vm_offset_t, vm_size_t); static boolean_t pmap_query_bit(vm_page_t, int); -static boolean_t pmap_clear_bit(vm_page_t, int); +static u_int pmap_clear_bit(vm_page_t, int, int *); static void tlbia(void); static __inline int @@ -862,15 +864,6 @@ pmap_change_wiring(pmap_t pm, vm_offset_t va, boolean_t wired) } void -pmap_clear_modify(vm_page_t m) -{ - - if (m->flags * PG_FICTITIOUS) - return; - pmap_clear_bit(m, PTE_CHG); -} - -void pmap_copy(pmap_t dst_pmap, pmap_t src_pmap, vm_offset_t dst_addr, vm_size_t len, vm_offset_t src_addr) { @@ -900,8 +893,7 @@ void pmap_zero_page(vm_page_t m) { vm_offset_t pa = VM_PAGE_TO_PHYS(m); - caddr_t va; - int i; + caddr_t va; if (pa < SEGMENT_LENGTH) { va = (caddr_t) pa; @@ -916,13 +908,6 @@ pmap_zero_page(vm_page_t m) bzero(va, PAGE_SIZE); -#if 0 - for (i = PAGE_SIZE / CACHELINESIZE; i > 0; i--) { - __asm __volatile("dcbz 0,%0" :: "r"(va)); - va += CACHELINESIZE; - } -#endif - if (pa >= SEGMENT_LENGTH) pmap_pa_unmap(pmap_pvo_zeropage, NULL, NULL); } @@ -932,7 +917,6 @@ pmap_zero_page_area(vm_page_t m, int off, int size) { vm_offset_t pa = VM_PAGE_TO_PHYS(m); caddr_t va; - int i; if (pa < SEGMENT_LENGTH) { va = (caddr_t) pa; @@ -947,13 +931,6 @@ pmap_zero_page_area(vm_page_t m, int off, int size) bzero(va + off, size); -#if 0 - for (i = size / CACHELINESIZE; i > 0; i--) { - __asm __volatile("dcbz 0,%0" :: "r"(va)); - va += CACHELINESIZE; - } -#endif - if (pa >= SEGMENT_LENGTH) pmap_pa_unmap(pmap_pvo_zeropage, NULL, NULL); } @@ -991,7 +968,8 @@ pmap_enter(pmap_t pmap, vm_offset_t va, vm_page_t m, vm_prot_t prot, pg = NULL; was_exec = PTE_EXEC; } else { - pvo_head = pa_to_pvoh(VM_PAGE_TO_PHYS(m), &pg); + pvo_head = vm_page_to_pvoh(m); + pg = m; zone = pmap_mpvo_zone; pvo_flags = PVO_MANAGED; was_exec = 0; @@ -1106,7 +1084,7 @@ boolean_t pmap_is_modified(vm_page_t m) { - if (m->flags & PG_FICTITIOUS) + if ((m->flags & (PG_FICTITIOUS |PG_UNMANAGED)) != 0) return (FALSE); return (pmap_query_bit(m, PTE_CHG)); @@ -1115,7 +1093,19 @@ pmap_is_modified(vm_page_t m) void pmap_clear_reference(vm_page_t m) { - TODO; + + if ((m->flags & (PG_FICTITIOUS | PG_UNMANAGED)) != 0) + return; + pmap_clear_bit(m, PTE_REF, NULL); +} + +void +pmap_clear_modify(vm_page_t m) +{ + + if ((m->flags & (PG_FICTITIOUS | PG_UNMANAGED)) != 0) + return; + pmap_clear_bit(m, PTE_CHG, NULL); } /* @@ -1130,12 +1120,17 @@ pmap_clear_reference(vm_page_t m) * should be tested and standardized at some point in the future for * optimal aging of shared pages. */ - int pmap_ts_referenced(vm_page_t m) { - TODO; - return (0); + int count; + + if ((m->flags & (PG_FICTITIOUS | PG_UNMANAGED)) != 0) + return (0); + + count = pmap_clear_bit(m, PTE_REF, NULL); + + return (count); } /* @@ -1315,8 +1310,21 @@ pmap_page_protect(vm_page_t m, vm_prot_t prot) boolean_t pmap_page_exists_quick(pmap_t pmap, vm_page_t m) { - TODO; - return (0); + int loops; + struct pvo_entry *pvo; + + if (!pmap_initialized || (m->flags & PG_FICTITIOUS)) + return FALSE; + + loops = 0; + LIST_FOREACH(pvo, vm_page_to_pvoh(m), pvo_vlink) { + if (pvo->pvo_pmap == pmap) + return (TRUE); + if (++loops >= 16) + break; + } + + return (FALSE); } static u_int pmap_vsidcontext; @@ -1457,12 +1465,16 @@ pmap_phys_address(int ppn) * references recorded. Existing mappings in the region are overwritten. */ void -pmap_qenter(vm_offset_t va, vm_page_t *m, int count) +pmap_qenter(vm_offset_t sva, vm_page_t *m, int count) { - int i; + vm_offset_t va; - for (i = 0; i < count; i++, va += PAGE_SIZE) - pmap_kenter(va, VM_PAGE_TO_PHYS(m[i])); + va = sva; + while (count-- > 0) { + pmap_kenter(va, VM_PAGE_TO_PHYS(*m)); + va += PAGE_SIZE; + m++; + } } /* @@ -1470,12 +1482,15 @@ pmap_qenter(vm_offset_t va, vm_page_t *m, int count) * temporary mappings entered by pmap_qenter. */ void -pmap_qremove(vm_offset_t va, int count) +pmap_qremove(vm_offset_t sva, int count) { - int i; + vm_offset_t va; - for (i = 0; i < count; i++, va += PAGE_SIZE) + va = sva; + while (count-- > 0) { pmap_kremove(va); + va += PAGE_SIZE; + } } void @@ -1513,6 +1528,30 @@ pmap_remove(pmap_t pm, vm_offset_t sva, vm_offset_t eva) } /* + * Remove physical page from all pmaps in which it resides. pmap_pvo_remove() + * will reflect changes in pte's back to the vm_page. + */ +void +pmap_remove_all(vm_page_t m) +{ + struct pvo_head *pvo_head; + struct pvo_entry *pvo, *next_pvo; + + KASSERT((m->flags & (PG_FICTITIOUS|PG_UNMANAGED)) == 0, + ("pv_remove_all: illegal for unmanaged page %#x", + VM_PAGE_TO_PHYS(m))); + + pvo_head = vm_page_to_pvoh(m); + for (pvo = LIST_FIRST(pvo_head); pvo != NULL; pvo = next_pvo) { + next_pvo = LIST_NEXT(pvo, pvo_vlink); + + PMAP_PVO_CHECK(pvo); /* sanity check */ + pmap_pvo_remove(pvo, -1); + } + vm_page_flag_clear(m, PG_WRITEABLE); +} + +/* * Remove all pages from specified address space, this aids process exit * speeds. This is much faster than pmap_remove in the case of running down * an entire address space. Only works for the current pmap. @@ -1581,9 +1620,11 @@ pmap_new_thread(struct thread *td, int pages) VM_ALLOC_NORMAL | VM_ALLOC_RETRY | VM_ALLOC_WIRED); ma[i] = m; + vm_page_lock_queues(); vm_page_wakeup(m); vm_page_flag_clear(m, PG_ZERO); m->valid = VM_PAGE_BITS_ALL; + vm_page_unlock_queues(); } /* @@ -1979,7 +2020,7 @@ pmap_pvo_remove(struct pvo_entry *pvo, int pteidx) PVO_PTEGIDX_CLR(pvo); } else { pmap_pte_overflow--; - } + } /* * Update our statistics. @@ -2328,9 +2369,10 @@ pmap_query_bit(vm_page_t m, int ptebit) return (TRUE); } -static boolean_t -pmap_clear_bit(vm_page_t m, int ptebit) +static u_int +pmap_clear_bit(vm_page_t m, int ptebit, int *origbit) { + u_int count; struct pvo_entry *pvo; struct pte *pt; int rv; @@ -2354,20 +2396,27 @@ pmap_clear_bit(vm_page_t m, int ptebit) * For each pvo entry, clear the pvo's ptebit. If this pvo has a * valid pte clear the ptebit from the valid pte. */ + count = 0; LIST_FOREACH(pvo, vm_page_to_pvoh(m), pvo_vlink) { PMAP_PVO_CHECK(pvo); /* sanity check */ pt = pmap_pvo_to_pte(pvo, -1); if (pt != NULL) { pmap_pte_synch(pt, &pvo->pvo_pte); - if (pvo->pvo_pte.pte_lo & ptebit) + if (pvo->pvo_pte.pte_lo & ptebit) { + count++; pmap_pte_clear(pt, PVO_VADDR(pvo), ptebit); + } } rv |= pvo->pvo_pte.pte_lo; pvo->pvo_pte.pte_lo &= ~ptebit; PMAP_PVO_CHECK(pvo); /* sanity check */ } - return ((rv & ptebit) != 0); + if (origbit != NULL) { + *origbit = rv; + } + + return (count); } /* |