WebSVN – HelenOS – Diff – /trunk/kernel/arch/xen32/include/mm/page.h

 /*
  * 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
  */
 #ifndef __xen32_PAGE_H__
 #define __xen32_PAGE_H__
 #include <arch/mm/frame.h>
 #define PAGE_WIDTH  FRAME_WIDTH
 #define PAGE_SIZE   FRAME_SIZE
 #ifdef KERNEL
 #ifndef __ASM__
-#   include <arch/hypercall.h>
 #   define KA2PA(x) (((uintptr_t) (x)) - 0x80000000)
 #   define PA2KA(x) (((uintptr_t) (x)) + 0x80000000)
 #else
 #   define KA2PA(x) ((x) - 0x80000000)
 #   define PA2KA(x) ((x) + 0x80000000)
 #endif
 /*
  * Implementation of generic 4-level page table interface.
  * IA-32 has 2-level page tables, so PTL1 and PTL2 are left out.
  */
 #define PTL0_ENTRIES_ARCH   1024
 #define PTL1_ENTRIES_ARCH   0
 #define PTL2_ENTRIES_ARCH   0
 #define PTL3_ENTRIES_ARCH   1024
 #define PTL0_INDEX_ARCH(vaddr)  (((vaddr) >> 22) & 0x3ff)
 #define PTL1_INDEX_ARCH(vaddr)  0
 #define PTL2_INDEX_ARCH(vaddr)  0
 #define PTL3_INDEX_ARCH(vaddr)  (((vaddr) >> 12) & 0x3ff)
-#define GET_PTL1_ADDRESS_ARCH(ptl0, i)      ((pte_t *)((((pte_t *)(ptl0))[(i)].frame_address) << 12))
+#define GET_PTL1_ADDRESS_ARCH(ptl0, i)      ((pte_t *) MA2PA((((pte_t *) (ptl0))[(i)].frame_address) << 12))
 #define GET_PTL2_ADDRESS_ARCH(ptl1, i)      (ptl1)
 #define GET_PTL3_ADDRESS_ARCH(ptl2, i)      (ptl2)
-#define GET_FRAME_ADDRESS_ARCH(ptl3, i)     ((uintptr_t)((((pte_t *)(ptl3))[(i)].frame_address) << 12))
+#define GET_FRAME_ADDRESS_ARCH(ptl3, i)     ((uintptr_t) MA2PA((((pte_t *) (ptl3))[(i)].frame_address) << 12))
 #define SET_PTL0_ADDRESS_ARCH(ptl0) { \
     mmuext_op_t mmu_ext; \
+    \
     mmu_ext.cmd = MMUEXT_NEW_BASEPTR; \
-    mmu_ext.arg1.mfn = ADDR2PFN(PA2MA(ptl0)); \
+    mmu_ext.mfn = ADDR2PFN(PA2MA(ptl0)); \
     xen_mmuext_op(&mmu_ext, 1, NULL, DOMID_SELF); \
+}
 #define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) { \
     mmu_update_t update; \
+    \
     update.ptr = PA2MA(KA2PA(&((pte_t *) (ptl0))[(i)])); \
-    update.val = PA2MA(a); \
+    update.val = PA2MA(a) | 0x0003; \
     xen_mmu_update(&update, 1, NULL, DOMID_SELF); \
+}
 #define SET_PTL2_ADDRESS_ARCH(ptl1, i, a)
 #define SET_PTL3_ADDRESS_ARCH(ptl2, i, a)
-#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) { \
+#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a)  (((pte_t *) (ptl3))[(i)].frame_address = PA2MA(a) >> 12)
-    mmu_update_t update; \
-    update.ptr = PA2MA(KA2PA(&((pte_t *) (ptl3))[(i)])); \
-    update.val = PA2MA(a); \
-    xen_mmu_update(&update, 1, NULL, DOMID_SELF); \
-}
-#define GET_PTL1_FLAGS_ARCH(ptl0, i)        get_pt_flags((pte_t *)(ptl0), (index_t)(i))
+#define GET_PTL1_FLAGS_ARCH(ptl0, i)        get_pt_flags((pte_t *) (ptl0), (index_t)(i))
 #define GET_PTL2_FLAGS_ARCH(ptl1, i)        PAGE_PRESENT
 #define GET_PTL3_FLAGS_ARCH(ptl2, i)        PAGE_PRESENT
-#define GET_FRAME_FLAGS_ARCH(ptl3, i)       get_pt_flags((pte_t *)(ptl3), (index_t)(i))
+#define GET_FRAME_FLAGS_ARCH(ptl3, i)       get_pt_flags((pte_t *) (ptl3), (index_t)(i))
-#define SET_PTL1_FLAGS_ARCH(ptl0, i, x)     set_pt_flags((pte_t *)(ptl0), (index_t)(i), (x))
+#define SET_PTL1_FLAGS_ARCH(ptl0, i, x)     set_pt_flags((pte_t *) (ptl0), (index_t)(i), (x))
 #define SET_PTL2_FLAGS_ARCH(ptl1, i, x)
 #define SET_PTL3_FLAGS_ARCH(ptl2, i, x)
-#define SET_FRAME_FLAGS_ARCH(ptl3, i, x)    set_pt_flags((pte_t *)(ptl3), (index_t)(i), (x))
+#define SET_FRAME_FLAGS_ARCH(ptl3, i, x)        set_pt_flags((pte_t *) (ptl3), (index_t)(i), (x))
 #define PTE_VALID_ARCH(p)           (*((uint32_t *) (p)) != 0)
 #define PTE_PRESENT_ARCH(p)         ((p)->present != 0)
 #define PTE_GET_FRAME_ARCH(p)           ((p)->frame_address << FRAME_WIDTH)
 #define PTE_WRITABLE_ARCH(p)            ((p)->writeable != 0)
 #define PTE_EXECUTABLE_ARCH(p)          1
 #ifndef __ASM__
 #include <mm/page.h>
 #include <arch/types.h>
 #include <arch/mm/frame.h>
 #include <typedefs.h>
+#include <arch/hypercall.h>
 /* Page fault error codes. */
 /** When bit on this position is 0, the page fault was caused by a not-present page. */
 #define PFERR_CODE_P        (1 << 0)
 /** When bit on this position is 1, the page fault was caused by a write. */
 #define PFERR_CODE_RW       (1 << 1)
 /** When bit on this position is 1, the page fault was caused in user mode. */
 #define PFERR_CODE_US       (1 << 2)
 /** When bit on this position is 1, a reserved bit was set in page directory. */
 #define PFERR_CODE_RSVD     (1 << 3)
 /** Page Table Entry. */
 struct page_specifier {
     unsigned present : 1;
     unsigned writeable : 1;
     unsigned uaccessible : 1;
     unsigned page_write_through : 1;
     unsigned page_cache_disable : 1;
     unsigned accessed : 1;
     unsigned dirty : 1;
     unsigned pat : 1;
     unsigned global : 1;
     unsigned soft_valid : 1;    /**< Valid content even if the present bit is not set. */
     unsigned avl : 2;
     unsigned frame_address : 20;
 } __attribute__ ((packed));
+typedef struct {
+    uint64_t ptr;      /**< Machine address of PTE */
+    union {            /**< New contents of PTE */
+        uint64_t val;
+        pte_t pte;
+    };
+} mmu_update_t;
+typedef struct {
+    unsigned int cmd;
+    union {
+        unsigned long mfn;
+        unsigned long linear_addr;
+    };
+    union {
+        unsigned int nr_ents;
+        void *vcpumask;
+    };
+} mmuext_op_t;
+static inline int xen_update_va_mapping(const void *va, const pte_t pte, const unsigned int flags)
+{
+    return hypercall4(XEN_UPDATE_VA_MAPPING, va, pte, 0, flags);
+}
+static inline int xen_mmu_update(const mmu_update_t *req, const unsigned int count, unsigned int *success_count, domid_t domid)
+{
+    return hypercall4(XEN_MMU_UPDATE, req, count, success_count, domid);
+}
+static inline int xen_mmuext_op(const mmuext_op_t *op, const unsigned int count, unsigned int *success_count, domid_t domid)
+{
+    return hypercall4(XEN_MMUEXT_OP, op, count, success_count, domid);
+}
 static inline int get_pt_flags(pte_t *pt, index_t i)
+{
     pte_t *p = &pt[i];
     return (
         (!p->page_cache_disable)<<PAGE_CACHEABLE_SHIFT |
         (!p->present)<<PAGE_PRESENT_SHIFT |
         p->uaccessible<<PAGE_USER_SHIFT |
 <<PAGE_READ_SHIFT |
         p->writeable<<PAGE_WRITE_SHIFT |
 <<PAGE_EXEC_SHIFT |
         p->global<<PAGE_GLOBAL_SHIFT
     );
+}
 static inline void set_pt_flags(pte_t *pt, index_t i, int flags)
+{
     pte_t *p = &pt[i];
     p->page_cache_disable = !(flags & PAGE_CACHEABLE);
     p->present = !(flags & PAGE_NOT_PRESENT);
     p->uaccessible = (flags & PAGE_USER) != 0;
     p->writeable = (flags & PAGE_WRITE) != 0;
     p->global = (flags & PAGE_GLOBAL) != 0;
     /*
      * Ensure that there is at least one bit set even if the present bit is cleared.
      */
     p->soft_valid = true;
+}
 extern void page_arch_init(void);
 extern void page_fault(int n, istate_t *istate);
 #endif /* __ASM__ */
 #endif /* KERNEL */
 #endif
 /** @}
  */

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/xen32/include/mm/page.h – Rev 1821 → 1824