Date: Mon, 11 Nov 2013 03:17:38 +0000 (UTC) From: Justin Hibbits <jhibbits@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r257941 - head/sys/powerpc/aim Message-ID: <201311110317.rAB3HdC6052076@svn.freebsd.org>
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Author: jhibbits Date: Mon Nov 11 03:17:38 2013 New Revision: 257941 URL: http://svnweb.freebsd.org/changeset/base/257941 Log: Add the necessary bits for dumps on ppc64. MFC after: 2 weeks Modified: head/sys/powerpc/aim/mmu_oea64.c Modified: head/sys/powerpc/aim/mmu_oea64.c ============================================================================== --- head/sys/powerpc/aim/mmu_oea64.c Mon Nov 11 03:12:43 2013 (r257940) +++ head/sys/powerpc/aim/mmu_oea64.c Mon Nov 11 03:17:38 2013 (r257941) @@ -192,6 +192,11 @@ struct ofw_map { cell_t om_mode; }; +extern unsigned char _etext[]; +extern unsigned char _end[]; + +extern int dumpsys_minidump; + /* * Map of physical memory regions. */ @@ -329,6 +334,9 @@ void moea64_kenter_attr(mmu_t, vm_offset void moea64_kenter(mmu_t, vm_offset_t, vm_paddr_t); boolean_t moea64_dev_direct_mapped(mmu_t, vm_paddr_t, vm_size_t); static void moea64_sync_icache(mmu_t, pmap_t, vm_offset_t, vm_size_t); +vm_offset_t moea64_dumpsys_map(mmu_t mmu, struct pmap_md *md, vm_size_t ofs, + vm_size_t *sz); +struct pmap_md * moea64_scan_md(mmu_t mmu, struct pmap_md *prev); static mmu_method_t moea64_methods[] = { MMUMETHOD(mmu_change_wiring, moea64_change_wiring), @@ -374,6 +382,8 @@ static mmu_method_t moea64_methods[] = { MMUMETHOD(mmu_kenter, moea64_kenter), MMUMETHOD(mmu_kenter_attr, moea64_kenter_attr), MMUMETHOD(mmu_dev_direct_mapped,moea64_dev_direct_mapped), + MMUMETHOD(mmu_scan_md, moea64_scan_md), + MMUMETHOD(mmu_dumpsys_map, moea64_dumpsys_map), { 0, 0 } }; @@ -2584,3 +2594,98 @@ moea64_sync_icache(mmu_t mmu, pmap_t pm, } PMAP_UNLOCK(pm); } + +vm_offset_t +moea64_dumpsys_map(mmu_t mmu, struct pmap_md *md, vm_size_t ofs, + vm_size_t *sz) +{ + if (md->md_vaddr == ~0UL) + return (md->md_paddr + ofs); + else + return (md->md_vaddr + ofs); +} + +struct pmap_md * +moea64_scan_md(mmu_t mmu, struct pmap_md *prev) +{ + static struct pmap_md md; + struct pvo_entry *pvo; + vm_offset_t va; + + if (dumpsys_minidump) { + md.md_paddr = ~0UL; /* Minidumps use virtual addresses. */ + if (prev == NULL) { + /* 1st: kernel .data and .bss. */ + md.md_index = 1; + md.md_vaddr = trunc_page((uintptr_t)_etext); + md.md_size = round_page((uintptr_t)_end) - md.md_vaddr; + return (&md); + } + switch (prev->md_index) { + case 1: + /* 2nd: msgbuf and tables (see pmap_bootstrap()). */ + md.md_index = 2; + md.md_vaddr = (vm_offset_t)msgbufp->msg_ptr; + md.md_size = round_page(msgbufp->msg_size); + break; + case 2: + /* 3rd: kernel VM. */ + va = prev->md_vaddr + prev->md_size; + /* Find start of next chunk (from va). */ + while (va < virtual_end) { + /* Don't dump the buffer cache. */ + if (va >= kmi.buffer_sva && + va < kmi.buffer_eva) { + va = kmi.buffer_eva; + continue; + } + pvo = moea64_pvo_find_va(kernel_pmap, + va & ~ADDR_POFF); + if (pvo != NULL && + (pvo->pvo_pte.pte.pte_hi & PTE_VALID)) + break; + va += PAGE_SIZE; + } + if (va < virtual_end) { + md.md_vaddr = va; + va += PAGE_SIZE; + /* Find last page in chunk. */ + while (va < virtual_end) { + /* Don't run into the buffer cache. */ + if (va == kmi.buffer_sva) + break; + pvo = moea64_pvo_find_va(kernel_pmap, + va & ~ADDR_POFF); + if (pvo == NULL || + !(pvo->pvo_pte.pte.pte_hi & PTE_VALID)) + break; + va += PAGE_SIZE; + } + md.md_size = va - md.md_vaddr; + break; + } + md.md_index = 3; + /* FALLTHROUGH */ + default: + return (NULL); + } + } else { /* minidumps */ + if (prev == NULL) { + /* first physical chunk. */ + md.md_paddr = pregions[0].mr_start; + md.md_size = pregions[0].mr_size; + md.md_vaddr = ~0UL; + md.md_index = 1; + } else if (md.md_index < pregions_sz) { + md.md_paddr = pregions[md.md_index].mr_start; + md.md_size = pregions[md.md_index].mr_size; + md.md_vaddr = ~0UL; + md.md_index++; + } else { + /* There's no next physical chunk. */ + return (NULL); + } + } + + return (&md); +}
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