1 files changed, 55 insertions, 52 deletions

diff --git a/include/asm-ppc64/mmu.h b/include/asm-ppc64/mmu.h
index c78282a67d8e..70348a851313 100644
--- a/include/asm-ppc64/mmu.h
+++ b/include/asm-ppc64/mmu.h
@@ -47,9 +47,10 @@
 #define SLB_VSID_KS             ASM_CONST(0x0000000000000800)
 #define SLB_VSID_KP             ASM_CONST(0x0000000000000400)
 #define SLB_VSID_N              ASM_CONST(0x0000000000000200) /* no-execute */
-#define SLB_VSID_L              ASM_CONST(0x0000000000000100) /* largepage 16M */
+#define SLB_VSID_L              ASM_CONST(0x0000000000000100) /* largepage */
 #define SLB_VSID_C              ASM_CONST(0x0000000000000080) /* class */
-
+#define SLB_VSID_LS             ASM_CONST(0x0000000000000070) /* size of largepage */
+ 
 #define SLB_VSID_KERNEL         (SLB_VSID_KP|SLB_VSID_C)
 #define SLB_VSID_USER           (SLB_VSID_KP|SLB_VSID_KS)
 
@@ -59,6 +60,22 @@
 
 #define HPTES_PER_GROUP 8
 
+#define HPTE_V_AVPN_SHIFT       7
+#define HPTE_V_AVPN             ASM_CONST(0xffffffffffffff80)
+#define HPTE_V_AVPN_VAL(x)      (((x) & HPTE_V_AVPN) >> HPTE_V_AVPN_SHIFT)
+#define HPTE_V_BOLTED           ASM_CONST(0x0000000000000010)
+#define HPTE_V_LOCK             ASM_CONST(0x0000000000000008)
+#define HPTE_V_LARGE            ASM_CONST(0x0000000000000004)
+#define HPTE_V_SECONDARY        ASM_CONST(0x0000000000000002)
+#define HPTE_V_VALID            ASM_CONST(0x0000000000000001)
+
+#define HPTE_R_PP0              ASM_CONST(0x8000000000000000)
+#define HPTE_R_TS               ASM_CONST(0x4000000000000000)
+#define HPTE_R_RPN_SHIFT        12
+#define HPTE_R_RPN              ASM_CONST(0x3ffffffffffff000)
+#define HPTE_R_FLAGS            ASM_CONST(0x00000000000003ff)
+#define HPTE_R_PP               ASM_CONST(0x0000000000000003)
+
 /* Values for PP (assumes Ks=0, Kp=1) */
 /* pp0 will always be 0 for linux     */
 #define PP_RWXX 0       /* Supervisor read/write, User none */
@@ -68,54 +85,13 @@
 
 #ifndef __ASSEMBLY__
 
-/* Hardware Page Table Entry */
-typedef struct {
-        unsigned long avpn:57; /* vsid | api == avpn  */
-        unsigned long :     2; /* Software use */
-        unsigned long bolted: 1; /* HPTE is "bolted" */
-        unsigned long lock: 1; /* lock on pSeries SMP */
-        unsigned long l:    1; /* Virtual page is large (L=1) or 4 KB (L=0) */
-        unsigned long h:    1; /* Hash function identifier */
-        unsigned long v:    1; /* Valid (v=1) or invalid (v=0) */
-} Hpte_dword0;
-
 typedef struct {
-        unsigned long pp0:  1; /* Page protection bit 0 */
-        unsigned long ts:   1; /* Tag set bit */
-        unsigned long rpn: 50; /* Real page number */
-        unsigned long :     2; /* Reserved */
-        unsigned long ac:   1; /* Address compare */ 
-        unsigned long r:    1; /* Referenced */
-        unsigned long c:    1; /* Changed */
-        unsigned long w:    1; /* Write-thru cache mode */
-        unsigned long i:    1; /* Cache inhibited */
-        unsigned long m:    1; /* Memory coherence required */
-        unsigned long g:    1; /* Guarded */
-        unsigned long n:    1; /* No-execute */
-        unsigned long pp:   2; /* Page protection bits 1:2 */
-} Hpte_dword1;
+        unsigned long v;
+        unsigned long r;
+} hpte_t;
 
-typedef struct {
-        char padding[6];                /* padding */
-        unsigned long :       6;        /* padding */ 
-        unsigned long flags: 10;        /* HPTE flags */
-} Hpte_dword1_flags;
-
-typedef struct {
-        union {
-                unsigned long dword0;
-                Hpte_dword0   dw0;
-        } dw0;
-
-        union {
-                unsigned long dword1;
-                Hpte_dword1 dw1;
-                Hpte_dword1_flags flags;
-        } dw1;
-} HPTE; 
-
-extern HPTE *           htab_address;
-extern unsigned long    htab_hash_mask;
+extern hpte_t *htab_address;
+extern unsigned long htab_hash_mask;
 
 static inline unsigned long hpt_hash(unsigned long vpn, int large)
 {
@@ -180,6 +156,28 @@ static inline void tlbiel(unsigned long va)
         asm volatile("ptesync": : :"memory");
 }
 
+static inline unsigned long slot2va(unsigned long hpte_v, unsigned long slot)
+{
+        unsigned long avpn = HPTE_V_AVPN_VAL(hpte_v);
+        unsigned long va;
+
+        va = avpn << 23;
+
+        if (! (hpte_v & HPTE_V_LARGE)) {
+                unsigned long vpi, pteg;
+
+                pteg = slot / HPTES_PER_GROUP;
+                if (hpte_v & HPTE_V_SECONDARY)
+                        pteg = ~pteg;
+
+                vpi = ((va >> 28) ^ pteg) & htab_hash_mask;
+
+                va |= vpi << PAGE_SHIFT;
+        }
+
+        return va;
+}
+
 /*
  * Handle a fault by adding an HPTE. If the address can't be determined
  * to be valid via Linux page tables, return 1. If handled return 0
@@ -196,11 +194,13 @@ extern void hpte_init_iSeries(void);
 
 extern long pSeries_lpar_hpte_insert(unsigned long hpte_group,
                                      unsigned long va, unsigned long prpn,
-                                     int secondary, unsigned long hpteflags,
-                                     int bolted, int large);
+                                     unsigned long vflags,
+                                     unsigned long rflags);
 extern long native_hpte_insert(unsigned long hpte_group, unsigned long va,
-                               unsigned long prpn, int secondary,
-                               unsigned long hpteflags, int bolted, int large);
+                               unsigned long prpn,
+                               unsigned long vflags, unsigned long rflags);
+
+extern void stabs_alloc(void);
 
 #endif /* __ASSEMBLY__ */
 
@@ -338,6 +338,9 @@ static inline unsigned long get_vsid(unsigned long context, unsigned long ea)
                              | (ea >> SID_SHIFT));
 }
 
+#define VSID_SCRAMBLE(pvsid)    (((pvsid) * VSID_MULTIPLIER) % VSID_MODULUS)
+#define KERNEL_VSID(ea)         VSID_SCRAMBLE(GET_ESID(ea))
+
 #endif /* __ASSEMBLY */
 
 #endif /* _PPC64_MMU_H_ */