X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-ppc64%2Fmmu.h;h=7bc42eb087adb777df01b69350ada386055c97a7;hb=f8e38dde33b839bb9e9f98e88688bfac1811d57a;hp=9d03a98a4fa3009ea04496d117649a0203a68a16;hpb=fef1c772fa154c16e0a54577e9ecb5480f7b937e;p=linux-2.6

diff --git a/include/asm-ppc64/mmu.h b/include/asm-ppc64/mmu.h
index 9d03a98a4f..7bc42eb087 100644
--- a/include/asm-ppc64/mmu.h
+++ b/include/asm-ppc64/mmu.h
@@ -28,9 +28,12 @@
 #define STE_VSID_SHIFT	12
 
 /* Location of cpu0's segment table */
-#define STAB0_PAGE	0x9
+#define STAB0_PAGE	0x6
 #define STAB0_PHYS_ADDR	(STAB0_PAGE<<PAGE_SHIFT)
-#define STAB0_VIRT_ADDR	(KERNELBASE+STAB0_PHYS_ADDR)
+
+#ifndef __ASSEMBLY__
+extern char initial_stab[];
+#endif /* ! __ASSEMBLY */
 
 /*
  * SLB
@@ -51,8 +54,10 @@
 #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)
+#define SLB_VSID_KERNEL		(SLB_VSID_KP)
+#define SLB_VSID_USER		(SLB_VSID_KP|SLB_VSID_KS|SLB_VSID_C)
+
+#define SLBIE_C			(0x08000000)
 
 /*
  * Hash table
@@ -60,6 +65,22 @@
 
 #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 */
@@ -69,54 +90,13 @@
 
 #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)
 {
@@ -181,6 +161,28 @@ 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
@@ -197,11 +199,13 @@ 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__ */
 
@@ -260,8 +264,10 @@ extern long native_hpte_insert(unsigned long hpte_group, unsigned long va,
 #define VSID_BITS	36
 #define VSID_MODULUS	((1UL<<VSID_BITS)-1)
 
-#define CONTEXT_BITS	20
-#define USER_ESID_BITS	15
+#define CONTEXT_BITS	19
+#define USER_ESID_BITS	16
+
+#define USER_VSID_RANGE	(1UL << (USER_ESID_BITS + SID_SHIFT))
 
 /*
  * This macro generates asm code to compute the VSID scramble
@@ -303,8 +309,7 @@ typedef unsigned long mm_context_id_t;
 typedef struct {
 	mm_context_id_t id;
 #ifdef CONFIG_HUGETLB_PAGE
-	pgd_t *huge_pgdir;
-	u16 htlb_segs; /* bitmask */
+	u16 low_htlb_areas, high_htlb_areas;
 #endif
 } mm_context_t;
 
@@ -339,6 +344,9 @@ 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_ */