| /trunk/kernel/arch/xen32/src/mm/tlb.c |
|---|
| 0,0 → 1,75 |
| /* |
| * Copyright (C) 2005 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. |
| */ |
| /** @addtogroup xen32mm |
| * @{ |
| */ |
| /** @file |
| * @ingroup xen32mm |
| */ |
| #include <mm/tlb.h> |
| #include <arch/mm/asid.h> |
| #include <arch/asm.h> |
| #include <arch/types.h> |
| #include <arch/hypercall.h> |
| /** Invalidate all entries in TLB. */ |
| void tlb_invalidate_all(void) |
| { |
| mmuext_op_t mmu_ext; |
| mmu_ext.cmd = MMUEXT_TLB_FLUSH_LOCAL; |
| xen_mmuext_op(&mmu_ext, 1, NULL, DOMID_SELF); |
| } |
| /** Invalidate all entries in TLB that belong to specified address space. |
| * |
| * @param asid This parameter is ignored as the architecture doesn't support it. |
| */ |
| void tlb_invalidate_asid(asid_t asid) |
| { |
| tlb_invalidate_all(); |
| } |
| /** Invalidate TLB entries for specified page range belonging to specified address space. |
| * |
| * @param asid This parameter is ignored as the architecture doesn't support it. |
| * @param page Address of the first page whose entry is to be invalidated. |
| * @param cnt Number of entries to invalidate. |
| */ |
| void tlb_invalidate_pages(asid_t asid, uintptr_t page, count_t cnt) |
| { |
| int i; |
| for (i = 0; i < cnt; i++) |
| invlpg(page + i * PAGE_SIZE); |
| } |
| /** @} |
| */ |
| /trunk/kernel/arch/xen32/src/mm/frame.c |
|---|
| 0,0 → 1,155 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. |
| */ |
| /** @addtogroup xen32mm |
| * @{ |
| */ |
| /** @file |
| * @ingroup xen32mm |
| */ |
| #include <mm/frame.h> |
| #include <arch/mm/frame.h> |
| #include <mm/as.h> |
| #include <config.h> |
| #include <arch/boot/boot.h> |
| #include <arch/hypercall.h> |
| #include <panic.h> |
| #include <debug.h> |
| #include <align.h> |
| #include <macros.h> |
| #include <console/cmd.h> |
| #include <console/kconsole.h> |
| uintptr_t last_frame = 0; |
| #define L0_PT_SHIFT 10 |
| #define L3_PT_SHIFT 0 |
| #define L0_PT_ENTRIES 1024 |
| #define L3_PT_ENTRIES 1024 |
| #define L0_INDEX_MASK (L0_PT_ENTRIES - 1) |
| #define L3_INDEX_MASK (L3_PT_ENTRIES - 1) |
| #define PFN2PTL0_INDEX(pfn) ((pfn >> L0_PT_SHIFT) & L0_INDEX_MASK) |
| #define PFN2PTL3_INDEX(pfn) ((pfn >> L3_PT_SHIFT) & L3_INDEX_MASK) |
| #define PAGE_MASK (~(PAGE_SIZE - 1)) |
| #define _PAGE_PRESENT 0x001UL |
| #define _PAGE_RW 0x002UL |
| #define _PAGE_USER 0x004UL |
| #define _PAGE_PWT 0x008UL |
| #define _PAGE_PCD 0x010UL |
| #define _PAGE_ACCESSED 0x020UL |
| #define _PAGE_DIRTY 0x040UL |
| #define _PAGE_PAT 0x080UL |
| #define _PAGE_PSE 0x080UL |
| #define _PAGE_GLOBAL 0x100UL |
| #define L0_PROT (_PAGE_PRESENT | _PAGE_ACCESSED) |
| #define L3_PROT (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED) |
| void frame_arch_init(void) |
| { |
| if (config.cpu_active == 1) { |
| /* The only memory zone starts just after page table */ |
| pfn_t start = ADDR2PFN(ALIGN_UP(KA2PA(start_info.ptl0), PAGE_SIZE)) + start_info.pt_frames; |
| size_t size = start_info.frames - start; |
| /* Create identity mapping */ |
| pfn_t phys; |
| count_t count = 0; |
| for (phys = start; phys < start + size; phys++) { |
| mmu_update_t updates[L3_PT_ENTRIES]; |
| pfn_t virt = ADDR2PFN(PA2KA(PFN2ADDR(phys))); |
| size_t ptl0_index = PFN2PTL0_INDEX(virt); |
| size_t ptl3_index = PFN2PTL3_INDEX(virt); |
| pte_t *ptl3 = (pte_t *) PFN2ADDR(start_info.ptl0[ptl0_index].frame_address); |
| if (ptl3 == 0) { |
| mmuext_op_t mmu_ext; |
| pfn_t virt2 = ADDR2PFN(PA2KA(PFN2ADDR(start))); |
| /* New L1 page table entry needed */ |
| memsetb(PFN2ADDR(virt2), PAGE_SIZE, 0); |
| size_t ptl0_index2 = PFN2PTL0_INDEX(virt2); |
| size_t ptl3_index2 = PFN2PTL3_INDEX(virt2); |
| pte_t *ptl3_2 = (pte_t *) PFN2ADDR(start_info.ptl0[ptl0_index2].frame_address); |
| if (ptl3_2 == 0) |
| panic("Unable to find page table reference"); |
| updates[count].ptr = (uintptr_t) &ptl3_2[ptl3_index2]; |
| updates[count].val = PA2MA(PFN2ADDR(start)) | L0_PROT; |
| if (xen_mmu_update(updates, count + 1, NULL, DOMID_SELF) < 0) |
| panic("Unable to map new page table"); |
| count = 0; |
| mmu_ext.cmd = MMUEXT_PIN_L1_TABLE; |
| mmu_ext.arg1.mfn = ADDR2PFN(PA2MA(PFN2ADDR(start))); |
| if (xen_mmuext_op(&mmu_ext, 1, NULL, DOMID_SELF) < 0) |
| panic("Error pinning new page table"); |
| pte_t *ptl0 = (pte_t *) PA2MA(KA2PA(start_info.ptl0)); |
| updates[count].ptr = (uintptr_t) &ptl0[ptl0_index]; |
| updates[count].val = PA2MA(PFN2ADDR(start)) | L3_PROT; |
| if (xen_mmu_update(updates, count + 1, NULL, DOMID_SELF) < 0) |
| panic("Unable to update PTE for page table"); |
| count = 0; |
| ptl3 = (pte_t *) PFN2ADDR(start_info.ptl0[ptl0_index].frame_address); |
| start++; |
| size--; |
| } |
| updates[count].ptr = (uintptr_t) &ptl3[ptl3_index]; |
| updates[count].val = PA2MA(PFN2ADDR(phys)) | L3_PROT; |
| count++; |
| if ((count == L3_PT_ENTRIES) || (phys + 1 == start + size)) { |
| if (xen_mmu_update(updates, count, NULL, DOMID_SELF) < 0) |
| panic("Unable to update PTE"); |
| count = 0; |
| } |
| } |
| zone_create(start, size, start, 0); |
| last_frame = start + size; |
| } |
| } |
| /** @} |
| */ |
| /trunk/kernel/arch/xen32/src/mm/memory_init.c |
|---|
| 0,0 → 1,51 |
| /* |
| * Copyright (C) 2005 Josef Cejka |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. |
| */ |
| /** @addtogroup xen32mm |
| * @{ |
| */ |
| /** @file |
| */ |
| #include <arch/mm/memory_init.h> |
| #include <arch/mm/page.h> |
| #include <arch/boot/boot.h> |
| #include <print.h> |
| size_t get_memory_size(void) |
| { |
| return start_info.frames * PAGE_SIZE; |
| } |
| void memory_print_map(void) |
| { |
| } |
| /** @} |
| */ |
| /trunk/kernel/arch/xen32/src/mm/page.c |
|---|
| 0,0 → 1,86 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. |
| */ |
| /** @addtogroup xen32mm |
| * @{ |
| */ |
| /** @file |
| */ |
| #include <arch/mm/page.h> |
| #include <genarch/mm/page_pt.h> |
| #include <arch/mm/frame.h> |
| #include <mm/frame.h> |
| #include <mm/page.h> |
| #include <mm/as.h> |
| #include <arch/types.h> |
| #include <align.h> |
| #include <config.h> |
| #include <func.h> |
| #include <arch/interrupt.h> |
| #include <arch/asm.h> |
| #include <debug.h> |
| #include <memstr.h> |
| #include <print.h> |
| #include <interrupt.h> |
| void page_arch_init(void) |
| { |
| if (config.cpu_active == 1) { |
| page_mapping_operations = &pt_mapping_operations; |
| AS_KERNEL->page_table = (pte_t *) KA2PA(start_info.ptl0); |
| } else |
| SET_PTL0_ADDRESS_ARCH(AS_KERNEL->page_table); |
| } |
| void page_fault(int n, istate_t *istate) |
| { |
| uintptr_t page; |
| pf_access_t access; |
| page = read_cr2(); |
| if (istate->error_word & PFERR_CODE_RSVD) |
| panic("Reserved bit set in page directory.\n"); |
| if (istate->error_word & PFERR_CODE_RW) |
| access = PF_ACCESS_WRITE; |
| else |
| access = PF_ACCESS_READ; |
| if (as_page_fault(page, access, istate) == AS_PF_FAULT) { |
| fault_if_from_uspace(istate, "Page fault: %#x", page); |
| PRINT_INFO_ERRCODE(istate); |
| printf("page fault address: %#x\n", page); |
| panic("page fault\n"); |
| } |
| } |
| /** @} |
| */ |
| /trunk/kernel/arch/xen32/src/mm/as.c |
|---|
| 0,0 → 1,46 |
| /* |
| * Copyright (C) 2006 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. |
| */ |
| /** @addtogroup xen32mm |
| * @{ |
| */ |
| /** @file |
| * @ingroup xen32mm |
| */ |
| #include <arch/mm/as.h> |
| #include <genarch/mm/as_pt.h> |
| /** Architecture dependent address space init. */ |
| void as_arch_init(void) |
| { |
| as_operations = &as_pt_operations; |
| } |
| /** @} |
| */ |