Changeset b4655da in mainline for kernel/arch/sparc64/src/mm/sun4v/tlb.c

Timestamp:

2009-11-06T16:59:40Z (15 years ago)

Author:

Pavel Rimsky <pavel@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

74cbac7d

Parents:

66e08d02

Message:

TLB & CPU init implemented, now the code reaches creation of the first thread.

File:

• kernel/arch/sparc64/src/mm/sun4v/tlb.c (modified) (11 diffs)

kernel/arch/sparc64/src/mm/sun4v/tlb.c

@@ -37 +37 @@
 #include <mm/as.h>
 #include <mm/asid.h>
+#include <arch/sun4v/hypercall.h>
 #include <arch/mm/frame.h>
 #include <arch/mm/page.h>
-#include <arch/mm/mmu.h>
+#include <arch/mm/tte.h>
+#include <arch/mm/tlb.h>
 #include <arch/interrupt.h>
 #include <interrupt.h>
@@ -70 +72 @@
 };
 
+/** Invalidate all unlocked ITLB and DTLB entries. */
+void tlb_invalidate_all(void)
+{
+        uint64_t errno =  __hypercall_fast3(MMU_DEMAP_ALL, 0, 0,
+                MMU_FLAG_DTLB | MMU_FLAG_ITLB);
+        if (errno != EOK) {
+                panic("Error code = %d.\n", errno);
+        }
+}
+
 void tlb_arch_init(void)
 {
-        /*
-         * Invalidate all non-locked DTLB and ITLB entries.
-         */
-        //MH
-        //tlb_invalidate_all();
-
-        /*
-         * Clear both SFSRs.
-         */
-        //MH
-        //dtlb_sfsr_write(0);
-        //itlb_sfsr_write(0);
+        tlb_invalidate_all();
 }
 
@@ -97 +98 @@
     bool locked, bool cacheable)
 {
+#if 0
         tlb_tag_access_reg_t tag;
         tlb_data_t data;
@@ -124 +126 @@
 
         dtlb_data_in_write(data.value);
+#endif
 }
 
@@ -135 +138 @@
 void dtlb_pte_copy(pte_t *t, size_t index, bool ro)
 {
+#if 0
         tlb_tag_access_reg_t tag;
         tlb_data_t data;
@@ -163 +167 @@
 
         dtlb_data_in_write(data.value);
+#endif
 }
 
@@ -172 +177 @@
 void itlb_pte_copy(pte_t *t, size_t index)
 {
+#if 0
         tlb_tag_access_reg_t tag;
         tlb_data_t data;
@@ -197 +203 @@
         
         itlb_data_in_write(data.value);
+#endif
 }
 
@@ -362 +369 @@
 static void print_tlb_entry(int i, tlb_tag_read_reg_t t, tlb_data_t d)
 {
+#if 0
         printf("%d: vpn=%#llx, context=%d, v=%d, size=%d, nfo=%d, "
             "ie=%d, soft2=%#x, pfn=%#x, soft=%#x, l=%d, "
@@ -367 +375 @@
             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);
+#endif
 }
 
@@ -502 +511 @@
 }
 
-#if defined (US)
-/** 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
-         * is to collide with proper mappings. Invalidate immediately. It should
-         * be safe to invalidate them as late as now.
-         */
-
-        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)
-
-/** Invalidate all unlocked ITLB and DTLB entries. */
-void tlb_invalidate_all(void)
-{
-        itlb_demap(TLB_DEMAP_ALL, 0, 0);
-        dtlb_demap(TLB_DEMAP_ALL, 0, 0);
-}
-
-#endif
-
 /** Invalidate all ITLB and DTLB entries that belong to specified ASID
  * (Context).