Changes in kernel/arch/sparc64/include/mm/tsb.h [8c2214e:98000fb] in mainline

File:

• kernel/arch/sparc64/include/mm/tsb.h (modified) (1 diff)

kernel/arch/sparc64/include/mm/tsb.h

@@ -36 +36 @@
 #define KERN_sparc64_TSB_H_
 
-#if defined (SUN4U)
-#include <arch/mm/sun4u/tsb.h>
-#elif defined (SUN4V)
-#include <arch/mm/sun4v/tsb.h>
+/*
+ * ITSB abd DTSB will claim 64K of memory, which
+ * is a nice number considered that it is one of
+ * the page sizes supported by hardware, which,
+ * again, is nice because TSBs need to be locked
+ * in TLBs - only one TLB entry will do.
+ */
+#define TSB_SIZE                        2       /* when changing this, change
+                                                 * as.c as well */
+#define ITSB_ENTRY_COUNT                (512 * (1 << TSB_SIZE))
+#define DTSB_ENTRY_COUNT                (512 * (1 << TSB_SIZE))
+
+#define TSB_TAG_TARGET_CONTEXT_SHIFT    48
+
+#ifndef __ASM__
+
+#include <arch/mm/tte.h>
+#include <arch/mm/mmu.h>
+#include <arch/types.h>
+
+/** TSB Base register. */
+typedef union tsb_base_reg {
+        uint64_t value;
+        struct {
+                uint64_t base : 51;     /**< TSB base address, bits 63:13. */
+                unsigned split : 1;     /**< Split vs. common TSB for 8K and 64K
+                                         * pages. HelenOS uses only 8K pages
+                                         * for user mappings, so we always set
+                                         * this to 0.
+                                         */
+                unsigned : 9;
+                unsigned size : 3;      /**< TSB size. Number of entries is
+                                         * 512 * 2^size. */
+        } __attribute__ ((packed));
+} tsb_base_reg_t;
+
+/** Read ITSB Base register.
+ *
+ * @return Content of the ITSB Base register.
+ */
+static inline uint64_t itsb_base_read(void)
+{
+        return asi_u64_read(ASI_IMMU, VA_IMMU_TSB_BASE);
+}
+
+/** Read DTSB Base register.
+ *
+ * @return Content of the DTSB Base register.
+ */
+static inline uint64_t dtsb_base_read(void)
+{
+        return asi_u64_read(ASI_DMMU, VA_DMMU_TSB_BASE);
+}
+
+/** Write ITSB Base register.
+ *
+ * @param v New content of the ITSB Base register.
+ */
+static inline void itsb_base_write(uint64_t v)
+{
+        asi_u64_write(ASI_IMMU, VA_IMMU_TSB_BASE, v);
+}
+
+/** Write DTSB Base register.
+ *
+ * @param v New content of the DTSB Base register.
+ */
+static inline void dtsb_base_write(uint64_t v)
+{
+        asi_u64_write(ASI_DMMU, VA_DMMU_TSB_BASE, v);
+}
+
+#if defined (US3)
+
+/** Write DTSB Primary Extension register.
+ *
+ * @param v New content of the DTSB Primary Extension register.
+ */
+static inline void dtsb_primary_extension_write(uint64_t v)
+{
+        asi_u64_write(ASI_DMMU, VA_DMMU_PRIMARY_EXTENSION, v);
+}
+
+/** Write DTSB Secondary Extension register.
+ *
+ * @param v New content of the DTSB Secondary Extension register.
+ */
+static inline void dtsb_secondary_extension_write(uint64_t v)
+{
+        asi_u64_write(ASI_DMMU, VA_DMMU_SECONDARY_EXTENSION, v);
+}
+
+/** Write DTSB Nucleus Extension register.
+ *
+ * @param v New content of the DTSB Nucleus Extension register.
+ */
+static inline void dtsb_nucleus_extension_write(uint64_t v)
+{
+        asi_u64_write(ASI_DMMU, VA_DMMU_NUCLEUS_EXTENSION, v);
+}
+
+/** Write ITSB Primary Extension register.
+ *
+ * @param v New content of the ITSB Primary Extension register.
+ */
+static inline void itsb_primary_extension_write(uint64_t v)
+{
+        asi_u64_write(ASI_IMMU, VA_IMMU_PRIMARY_EXTENSION, v);
+}
+
+/** Write ITSB Nucleus Extension register.
+ *
+ * @param v New content of the ITSB Nucleus Extension register.
+ */
+static inline void itsb_nucleus_extension_write(uint64_t v)
+{
+        asi_u64_write(ASI_IMMU, VA_IMMU_NUCLEUS_EXTENSION, v);
+}
+
 #endif
+
+/* Forward declarations. */
+struct as;
+struct pte;
+
+extern void tsb_invalidate(struct as *as, uintptr_t page, size_t pages);
+extern void itsb_pte_copy(struct pte *t, size_t index);
+extern void dtsb_pte_copy(struct pte *t, size_t index, bool ro);
+
+#endif /* !def __ASM__ */
 
 #endif