Merge remote-tracking branch 'remotes/powerpc/topic/ppc-kvm' into kvm-ppc-next

This merges in the ppc-kvm topic branch of the powerpc repository
to get some changes on which future patches will depend, in particular
some new exports and TEXASR bit definitions.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>

arch/powerpc/include/asm/asm-prototypes.h

@@ -141,4 +141,7 @@ unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip);
 void pnv_power9_force_smt4_catch(void);
 void pnv_power9_force_smt4_release(void);
 
+void tm_enable(void);
+void tm_disable(void);
+void tm_abort(uint8_t cause);
 #endif /* _ASM_POWERPC_ASM_PROTOTYPES_H */

arch/powerpc/include/asm/reg.h

@@ -146,6 +146,12 @@
 #define MSR_64BIT	0
 #endif
 
+/* Condition Register related */
+#define CR0_SHIFT	28
+#define CR0_MASK	0xF
+#define CR0_TBEGIN_FAILURE	(0x2 << 28) /* 0b0010 */
+
+
 /* Power Management - Processor Stop Status and Control Register Fields */
 #define PSSCR_RL_MASK		0x0000000F /* Requested Level */
 #define PSSCR_MTL_MASK		0x000000F0 /* Maximum Transition Level */
@@ -239,13 +245,27 @@
 #define SPRN_TFIAR	0x81	/* Transaction Failure Inst Addr   */
 #define SPRN_TEXASR	0x82	/* Transaction EXception & Summary */
 #define SPRN_TEXASRU	0x83	/* ''	   ''	   ''	 Upper 32  */
-#define   TEXASR_ABORT	__MASK(63-31) /* terminated by tabort or treclaim */
-#define   TEXASR_SUSP	__MASK(63-32) /* tx failed in suspended state */
-#define   TEXASR_HV	__MASK(63-34) /* MSR[HV] when failure occurred */
-#define   TEXASR_PR	__MASK(63-35) /* MSR[PR] when failure occurred */
-#define   TEXASR_FS	__MASK(63-36) /* TEXASR Failure Summary */
-#define   TEXASR_EXACT	__MASK(63-37) /* TFIAR value is exact */
+
+#define TEXASR_FC_LG	(63 - 7)	/* Failure Code */
+#define TEXASR_AB_LG	(63 - 31)	/* Abort */
+#define TEXASR_SU_LG	(63 - 32)	/* Suspend */
+#define TEXASR_HV_LG	(63 - 34)	/* Hypervisor state*/
+#define TEXASR_PR_LG	(63 - 35)	/* Privilege level */
+#define TEXASR_FS_LG	(63 - 36)	/* failure summary */
+#define TEXASR_EX_LG	(63 - 37)	/* TFIAR exact bit */
+#define TEXASR_ROT_LG	(63 - 38)	/* ROT bit */
+
+#define   TEXASR_ABORT	__MASK(TEXASR_AB_LG) /* terminated by tabort or treclaim */
+#define   TEXASR_SUSP	__MASK(TEXASR_SU_LG) /* tx failed in suspended state */
+#define   TEXASR_HV	__MASK(TEXASR_HV_LG) /* MSR[HV] when failure occurred */
+#define   TEXASR_PR	__MASK(TEXASR_PR_LG) /* MSR[PR] when failure occurred */
+#define   TEXASR_FS	__MASK(TEXASR_FS_LG) /* TEXASR Failure Summary */
+#define   TEXASR_EXACT	__MASK(TEXASR_EX_LG) /* TFIAR value is exact */
+#define   TEXASR_ROT	__MASK(TEXASR_ROT_LG)
+#define   TEXASR_FC	(ASM_CONST(0xFF) << TEXASR_FC_LG)
+
 #define SPRN_TFHAR	0x80	/* Transaction Failure Handler Addr */
+
 #define SPRN_TIDR	144	/* Thread ID register */
 #define SPRN_CTRLF	0x088
 #define SPRN_CTRLT	0x098

arch/powerpc/include/asm/tm.h

@@ -10,12 +10,10 @@
 
 #ifndef __ASSEMBLY__
 
-extern void tm_enable(void);
 extern void tm_reclaim(struct thread_struct *thread,
 		       uint8_t cause);
 extern void tm_reclaim_current(uint8_t cause);
 extern void tm_recheckpoint(struct thread_struct *thread);
-extern void tm_abort(uint8_t cause);
 extern void tm_save_sprs(struct thread_struct *thread);
 extern void tm_restore_sprs(struct thread_struct *thread);
 

arch/powerpc/kernel/process.c

@@ -154,6 +154,7 @@ unsigned long msr_check_and_set(unsigned long bits)
 
 	return newmsr;
 }
+EXPORT_SYMBOL_GPL(msr_check_and_set);
 
 void __msr_check_and_clear(unsigned long bits)
 {

arch/powerpc/kernel/tm.S

@@ -12,6 +12,7 @@
 #include <asm/ptrace.h>
 #include <asm/reg.h>
 #include <asm/bug.h>
+#include <asm/export.h>
 
 #ifdef CONFIG_VSX
 /* See fpu.S, this is borrowed from there */
@@ -55,6 +56,16 @@ _GLOBAL(tm_enable)
 	or	r4, r4, r3
 	mtmsrd	r4
 1:	blr
+EXPORT_SYMBOL_GPL(tm_enable);
+
+_GLOBAL(tm_disable)
+	mfmsr	r4
+	li	r3, MSR_TM >> 32
+	sldi	r3, r3, 32
+	andc	r4, r4, r3
+	mtmsrd	r4
+	blr
+EXPORT_SYMBOL_GPL(tm_disable);
 
 _GLOBAL(tm_save_sprs)
 	mfspr	r0, SPRN_TFHAR
@@ -78,6 +89,7 @@ _GLOBAL(tm_restore_sprs)
 _GLOBAL(tm_abort)
 	TABORT(R3)
 	blr
+EXPORT_SYMBOL_GPL(tm_abort);
 
 /* void tm_reclaim(struct thread_struct *thread,
  *		   uint8_t cause)

arch/powerpc/mm/hash_utils_64.c

@@ -64,6 +64,7 @@
 #include <asm/trace.h>
 #include <asm/ps3.h>
 #include <asm/pte-walk.h>
+#include <asm/asm-prototypes.h>
 
 #ifdef DEBUG
 #define DBG(fmt...) udbg_printf(fmt)

arch/powerpc/platforms/powernv/copy-paste.h

@@ -7,9 +7,8 @@
  * 2 of the License, or (at your option) any later version.
  */
 #include <asm/ppc-opcode.h>
+#include <asm/reg.h>
 
-#define CR0_SHIFT	28
-#define CR0_MASK	0xF
 /*
  * Copy/paste instructions:
  *