powerpc: Register defines for various transactional memory registers

Defines for MSR bits and transactional memory related SPRs TFIAR, TEXASR and
TEXASRU.

Signed-off-by: Matt Evans <[e-mail]>
Signed-off-by: Michael Neuling <[e-mail]>
Signed-off-by: Benjamin Herrenschmidt <[e-mail]>

arch/powerpc/include/asm/reg.h

···
 #define MSR_SF_LG	63              /* Enable 64 bit mode */
 #define MSR_ISF_LG	61              /* Interrupt 64b mode valid on 630 */
 #define MSR_HV_LG 	60              /* Hypervisor state */
+#define MSR_TS_T_LG	34		/* Trans Mem state: Transactional */
+#define MSR_TS_S_LG	33		/* Trans Mem state: Suspended */
+#define MSR_TS_LG	33		/* Trans Mem state (2 bits) */
+#define MSR_TM_LG	32		/* Trans Mem Available */
 #define MSR_VEC_LG	25	        /* Enable AltiVec */
 #define MSR_VSX_LG	23		/* Enable VSX */
 #define MSR_POW_LG	18		/* Enable Power Management */
···
 #endif
 #define MSR_RI		__MASK(MSR_RI_LG)	/* Recoverable Exception */
 #define MSR_LE		__MASK(MSR_LE_LG)	/* Little Endian */
+
+#define MSR_TM		__MASK(MSR_TM_LG)	/* Transactional Mem Available */
+#define MSR_TS_N	0			/*  Non-transactional */
+#define MSR_TS_S	__MASK(MSR_TS_S_LG)	/*  Transaction Suspended */
+#define MSR_TS_T	__MASK(MSR_TS_T_LG)	/*  Transaction Transactional */
+#define MSR_TS_MASK	(MSR_TS_T | MSR_TS_S)   /* Transaction State bits */
+#define MSR_TM_ACTIVE(x) (((x) & MSR_TS_MASK) != 0) /* Transaction active? */
+#define MSR_TM_TRANSACTIONAL(x)	(((x) & MSR_TS_MASK) == MSR_TS_T)
+#define MSR_TM_SUSPENDED(x)	(((x) & MSR_TS_MASK) == MSR_TS_S)
+
+/* Reason codes describing kernel causes for transaction aborts.  By
+   convention, bit0 is copied to TEXASR[56] (IBM bit 7) which is set if
+   the failure is persistent.
+*/
+#define TM_CAUSE_RESCHED	0xfe
+#define TM_CAUSE_TLBI		0xfc
+#define TM_CAUSE_FAC_UNAV	0xfa
+#define TM_CAUSE_SYSCALL	0xf9 /* Persistent */
+#define TM_CAUSE_MISC		0xf6
 
 #if defined(CONFIG_PPC_BOOK3S_64)
 #define MSR_64BIT	MSR_SF
···
 #define SPRN_UAMOR	0x9d	/* User Authority Mask Override Register */
 #define SPRN_AMOR	0x15d	/* Authority Mask Override Register */
 #define SPRN_ACOP	0x1F	/* Available Coprocessor Register */
+#define SPRN_TFIAR	0x81	/* Transaction Failure Inst Addr   */
+#define SPRN_TEXASR	0x82	/* Transaction EXception & Summary */
+#define SPRN_TEXASRU	0x83	/* ''	   ''	   ''	 Upper 32  */
+#define SPRN_TFHAR	0x80	/* Transaction Failure Handler Addr */
 #define SPRN_CTRLF	0x088
 #define SPRN_CTRLT	0x098
 #define   CTRL_CT	0xc0000000	/* current thread */