WebSVN – HelenOS – Diff – //branches/dynload/kernel/arch/sparc64/src/mm/tlb.c

 #ifdef CONFIG_TSB
 #include <arch/mm/tsb.h>
 #endif
-static void dtlb_pte_copy(pte_t *t, index_t index, bool ro);
+static void dtlb_pte_copy(pte_t *, index_t, bool);
-static void itlb_pte_copy(pte_t *t, index_t index);
+static void itlb_pte_copy(pte_t *, index_t);
-static void do_fast_instruction_access_mmu_miss_fault(istate_t *istate,
+static void do_fast_instruction_access_mmu_miss_fault(istate_t *, const char *);
-    const char *str);
-static void do_fast_data_access_mmu_miss_fault(istate_t *istate,
+static void do_fast_data_access_mmu_miss_fault(istate_t *, tlb_tag_access_reg_t,
-    tlb_tag_access_reg_t tag, const char *str);
+    const char *);
-static void do_fast_data_access_protection_fault(istate_t *istate,
+static void do_fast_data_access_protection_fault(istate_t *,
-    tlb_tag_access_reg_t tag, const char *str);
+    tlb_tag_access_reg_t, const char *);
 char *context_encoding[] = {
     "Primary",
     "Secondary",
     "Nucleus",
     itlb_sfsr_write(0);
+}
 /** Insert privileged mapping into DMMU TLB.
+ *
- * @param page Virtual page address.
+ * @param page      Virtual page address.
- * @param frame Physical frame address.
+ * @param frame     Physical frame address.
- * @param pagesize Page size.
+ * @param pagesize  Page size.
- * @param locked True for permanent mappings, false otherwise.
+ * @param locked    True for permanent mappings, false otherwise.
  * @param cacheable True if the mapping is cacheable, false otherwise.
  */
 void dtlb_insert_mapping(uintptr_t page, uintptr_t frame, int pagesize,
     bool locked, bool cacheable)
+{
     tlb_tag_access_reg_t tag;
     frame_address_t fr;
     pg.address = page;
     fr.address = frame;
-    tag.value = ASID_KERNEL;
+    tag.context = ASID_KERNEL;
     tag.vpn = pg.vpn;
     dtlb_tag_access_write(tag.value);
     data.value = 0;
     dtlb_data_in_write(data.value);
+}
 /** Copy PTE to TLB.
+ *
- * @param t     Page Table Entry to be copied.
+ * @param t         Page Table Entry to be copied.
- * @param index Zero if lower 8K-subpage, one if higher 8K-subpage.
+ * @param index     Zero if lower 8K-subpage, one if higher 8K-subpage.
- * @param ro    If true, the entry will be created read-only, regardless of its
+ * @param ro        If true, the entry will be created read-only, regardless
- *      w field.
+ *          of its w field.
  */
 void dtlb_pte_copy(pte_t *t, index_t index, bool ro)
+{
     tlb_tag_access_reg_t tag;
     tlb_data_t data;
     dtlb_data_in_write(data.value);
+}
 /** Copy PTE to ITLB.
+ *
  * @param t     Page Table Entry to be copied.
- * @param index Zero if lower 8K-subpage, one if higher 8K-subpage.
+ * @param index     Zero if lower 8K-subpage, one if higher 8K-subpage.
  */
 void itlb_pte_copy(pte_t *t, index_t index)
+{
     tlb_tag_access_reg_t tag;
     tlb_data_t data;
 /** DTLB miss handler.
+ *
  * Note that some faults (e.g. kernel faults) were already resolved by the
  * low-level, assembly language part of the fast_data_access_mmu_miss handler.
+ *
- * @param tag Content of the TLB Tag Access register as it existed when the
+ * @param tag       Content of the TLB Tag Access register as it existed
- *    trap happened. This is to prevent confusion created by clobbered
+ *          when the trap happened. This is to prevent confusion
- *    Tag Access register during a nested DTLB miss.
+ *          created by clobbered Tag Access register during a nested
+ *          DTLB miss.
- * @param istate Interrupted state saved on the stack.
+ * @param istate    Interrupted state saved on the stack.
  */
 void fast_data_access_mmu_miss(tlb_tag_access_reg_t tag, istate_t *istate)
+{
     uintptr_t va;
     index_t index;
+    }
+}
 /** DTLB protection fault handler.
+ *
- * @param tag Content of the TLB Tag Access register as it existed when the
+ * @param tag       Content of the TLB Tag Access register as it existed
- *    trap happened. This is to prevent confusion created by clobbered
+ *          when the trap happened. This is to prevent confusion
- *    Tag Access register during a nested DTLB miss.
+ *          created by clobbered Tag Access register during a nested
+ *          DTLB miss.
- * @param istate Interrupted state saved on the stack.
+ * @param istate    Interrupted state saved on the stack.
  */
 void fast_data_access_protection(tlb_tag_access_reg_t tag, istate_t *istate)
+{
     uintptr_t va;
     index_t index;
                 __func__);
+        }
+    }
+}
+/** Print TLB entry (for debugging purposes).
+ *
+ * The diag field has been left out in order to make this function more generic
+ * (there is no diag field in US3 architeture).
+ *
+ * @param i     TLB entry number
+ * @param t     TLB entry tag
+ * @param d     TLB entry data
+ */
+static void print_tlb_entry(int i, tlb_tag_read_reg_t t, tlb_data_t d)
+{
+    printf("%d: vpn=%#llx, context=%d, v=%d, size=%d, nfo=%d, "
+        "ie=%d, soft2=%#x, pfn=%#x, soft=%#x, l=%d, "
+        "cp=%d, cv=%d, e=%d, p=%d, w=%d, g=%d\n", i, t.vpn,
+        t.context, d.v, d.size, d.nfo, d.ie, d.soft2,
+        d.pfn, d.soft, d.l, d.cp, d.cv, d.e, d.p, d.w, d.g);
+}
+#if defined (US)
 /** Print contents of both TLBs. */
 void tlb_print(void)
+{
     int i;
     tlb_data_t d;
     printf("I-TLB contents:\n");
     for (i = 0; i < ITLB_ENTRY_COUNT; i++) {
         d.value = itlb_data_access_read(i);
         t.value = itlb_tag_read_read(i);
-        printf("%d: vpn=%#llx, context=%d, v=%d, size=%d, nfo=%d, "
-            "ie=%d, soft2=%#x, diag=%#x, pfn=%#x, soft=%#x, l=%d, "
-            "cp=%d, cv=%d, e=%d, p=%d, w=%d, g=%d\n", i, t.vpn,
-            t.context, d.v, d.size, d.nfo, d.ie, d.soft2, d.diag,
+        print_tlb_entry(i, t, d);
-            d.pfn, d.soft, d.l, d.cp, d.cv, d.e, d.p, d.w, d.g);
+    }
     printf("D-TLB contents:\n");
     for (i = 0; i < DTLB_ENTRY_COUNT; i++) {
         d.value = dtlb_data_access_read(i);
         t.value = dtlb_tag_read_read(i);
-        printf("%d: vpn=%#llx, context=%d, v=%d, size=%d, nfo=%d, "
-            "ie=%d, soft2=%#x, diag=%#x, pfn=%#x, soft=%#x, l=%d, "
-            "cp=%d, cv=%d, e=%d, p=%d, w=%d, g=%d\n", i, t.vpn,
-            t.context, d.v, d.size, d.nfo, d.ie, d.soft2, d.diag,
+        print_tlb_entry(i, t, d);
-            d.pfn, d.soft, d.l, d.cp, d.cv, d.e, d.p, d.w, d.g);
+    }
+}
+#elif defined (US3)
+/** Print contents of all TLBs. */
+void tlb_print(void)
+{
+    int i;
+    tlb_data_t d;
+    tlb_tag_read_reg_t t;
+    printf("TLB_ISMALL contents:\n");
+    for (i = 0; i < tlb_ismall_size(); i++) {
+        d.value = dtlb_data_access_read(TLB_ISMALL, i);
+        t.value = dtlb_tag_read_read(TLB_ISMALL, i);
+        print_tlb_entry(i, t, d);
+    }
+    printf("TLB_IBIG contents:\n");
+    for (i = 0; i < tlb_ibig_size(); i++) {
+        d.value = dtlb_data_access_read(TLB_IBIG, i);
+        t.value = dtlb_tag_read_read(TLB_IBIG, i);
+        print_tlb_entry(i, t, d);
+    }
+    printf("TLB_DSMALL contents:\n");
+    for (i = 0; i < tlb_dsmall_size(); i++) {
+        d.value = dtlb_data_access_read(TLB_DSMALL, i);
+        t.value = dtlb_tag_read_read(TLB_DSMALL, i);
+        print_tlb_entry(i, t, d);
+    }
+    printf("TLB_DBIG_1 contents:\n");
+    for (i = 0; i < tlb_dbig_size(); i++) {
+        d.value = dtlb_data_access_read(TLB_DBIG_0, i);
+        t.value = dtlb_tag_read_read(TLB_DBIG_0, i);
+        print_tlb_entry(i, t, d);
+    }
+    printf("TLB_DBIG_2 contents:\n");
+    for (i = 0; i < tlb_dbig_size(); i++) {
+        d.value = dtlb_data_access_read(TLB_DBIG_1, i);
+        t.value = dtlb_tag_read_read(TLB_DBIG_1, i);
+        print_tlb_entry(i, t, d);
+    }
+}
+#endif
 void do_fast_instruction_access_mmu_miss_fault(istate_t *istate,
     const char *str)
+{
     fault_if_from_uspace(istate, "%s\n", str);
     dump_istate(istate);
     uintptr_t sfar;
     sfsr.value = dtlb_sfsr_read();
     sfar = dtlb_sfar_read();
+#if defined (US)
     printf("DTLB SFSR: asi=%#x, ft=%#x, e=%d, ct=%d, pr=%d, w=%d, ow=%d, "
         "fv=%d\n", sfsr.asi, sfsr.ft, sfsr.e, sfsr.ct, sfsr.pr, sfsr.w,
         sfsr.ow, sfsr.fv);
+#elif defined (US3)
+    printf("DTLB SFSR: nf=%d, asi=%#x, tm=%d, ft=%#x, e=%d, ct=%d, pr=%d, "
+        "w=%d, ow=%d, fv=%d\n", sfsr.nf, sfsr.asi, sfsr.tm, sfsr.ft,
+        sfsr.e, sfsr.ct, sfsr.pr, sfsr.w, sfsr.ow, sfsr.fv);
+#endif
     printf("DTLB SFAR: address=%p\n", sfar);
     dtlb_sfsr_write(0);
+}
+#if defined (US3)
-/** Invalidate all unlocked ITLB and DTLB entries. */
+/** Invalidates given TLB entry if and only if it is non-locked or global.
+ *
+ * @param tlb       TLB number (one of TLB_DSMALL, TLB_DBIG_0, TLB_DBIG_1,
+ *          TLB_ISMALL, TLB_IBIG).
+ * @param entry     Entry index within the given TLB.
+ */
-void tlb_invalidate_all(void)
+static void tlb_invalidate_entry(int tlb, index_t entry)
+{
-    int i;
     tlb_data_t d;
     tlb_tag_read_reg_t t;
+    if (tlb == TLB_DSMALL || tlb == TLB_DBIG_0 || tlb == TLB_DBIG_1) {
+        d.value = dtlb_data_access_read(tlb, entry);
+        if (!d.l || d.g) {
+            t.value = dtlb_tag_read_read(tlb, entry);
+            d.v = false;
+            dtlb_tag_access_write(t.value);
+            dtlb_data_access_write(tlb, entry, d.value);
+        }
+    } else if (tlb == TLB_ISMALL || tlb == TLB_IBIG) {
+        d.value = itlb_data_access_read(tlb, entry);
+        if (!d.l || d.g) {
+            t.value = itlb_tag_read_read(tlb, entry);
+            d.v = false;
+            itlb_tag_access_write(t.value);
+            itlb_data_access_write(tlb, entry, d.value);
+        }
+    }
+}
+#endif
+/** Invalidate all unlocked ITLB and DTLB entries. */
+void tlb_invalidate_all(void)
+{
+    int i;
     /*
      * Walk all ITLB and DTLB entries and remove all unlocked mappings.
+     *
      * The kernel doesn't use global mappings so any locked global mappings
-     * found  must have been created by someone else. Their only purpose now
+     * found must have been created by someone else. Their only purpose now
      * is to collide with proper mappings. Invalidate immediately. It should
      * be safe to invalidate them as late as now.
      */
+#if defined (US)
+    tlb_data_t d;
+    tlb_tag_read_reg_t t;
     for (i = 0; i < ITLB_ENTRY_COUNT; i++) {
         d.value = itlb_data_access_read(i);
         if (!d.l || d.g) {
             t.value = itlb_tag_read_read(i);
             d.v = false;
             itlb_tag_access_write(t.value);
             itlb_data_access_write(i, d.value);
+        }
+    }
     for (i = 0; i < DTLB_ENTRY_COUNT; i++) {
         d.value = dtlb_data_access_read(i);
         if (!d.l || d.g) {
             t.value = dtlb_tag_read_read(i);
             d.v = false;
             dtlb_tag_access_write(t.value);
             dtlb_data_access_write(i, d.value);
+        }
+    }
+#elif defined (US3)
+    for (i = 0; i < tlb_ismall_size(); i++)
+        tlb_invalidate_entry(TLB_ISMALL, i);
+    for (i = 0; i < tlb_ibig_size(); i++)
+        tlb_invalidate_entry(TLB_IBIG, i);
+    for (i = 0; i < tlb_dsmall_size(); i++)
+        tlb_invalidate_entry(TLB_DSMALL, i);
+    for (i = 0; i < tlb_dbig_size(); i++)
+        tlb_invalidate_entry(TLB_DBIG_0, i);
+    for (i = 0; i < tlb_dbig_size(); i++)
+        tlb_invalidate_entry(TLB_DBIG_1, i);
+#endif
+}
 /** Invalidate all ITLB and DTLB entries that belong to specified ASID
  * (Context).
+ *
+}
 /** Invalidate all ITLB and DTLB entries for specified page range in specified
  * address space.
+ *
- * @param asid Address Space ID.
+ * @param asid      Address Space ID.
- * @param page First page which to sweep out from ITLB and DTLB.
+ * @param page      First page which to sweep out from ITLB and DTLB.
- * @param cnt Number of ITLB and DTLB entries to invalidate.
+ * @param cnt       Number of ITLB and DTLB entries to invalidate.
  */
 void tlb_invalidate_pages(asid_t asid, uintptr_t page, count_t cnt)
+{
     unsigned int i;
     tlb_context_reg_t pc_save, ctx;

Subversion Repositories HelenOS

(root)//branches/dynload/kernel/arch/sparc64/src/mm/tlb.c – Rev 2927 → 3674