powerpc/ppc-opcode: Add encoding macros for VSX vector paired instructions

Add instruction encodings, DQ, D0, D1 immediate, XTP, XSP operands as
macros for new VSX vector paired instructions,
  * Load VSX Vector Paired (lxvp)
  * Load VSX Vector Paired Indexed (lxvpx)
  * Prefixed Load VSX Vector Paired (plxvp)
  * Store VSX Vector Paired (stxvp)
  * Store VSX Vector Paired Indexed (stxvpx)
  * Prefixed Store VSX Vector Paired (pstxvp)
Suggested-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Balamuruhan S <bala24@linux.ibm.com>
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201011050908.72173-5-ravi.bangoria@linux.ibm.com

arch/powerpc/include/asm/ppc-opcode.h

@@ -78,6 +78,9 @@
 
 #define IMM_L(i)               ((uintptr_t)(i) & 0xffff)
 #define IMM_DS(i)              ((uintptr_t)(i) & 0xfffc)
+#define IMM_DQ(i)              ((uintptr_t)(i) & 0xfff0)
+#define IMM_D0(i)              (((uintptr_t)(i) >> 16) & 0x3ffff)
+#define IMM_D1(i)              IMM_L(i)
 
 /*
  * 16-bit immediate helper macros: HA() is for use with sign-extending instrs
@@ -294,6 +297,8 @@
 #define __PPC_XB(b)	((((b) & 0x1f) << 11) | (((b) & 0x20) >> 4))
 #define __PPC_XS(s)	((((s) & 0x1f) << 21) | (((s) & 0x20) >> 5))
 #define __PPC_XT(s)	__PPC_XS(s)
+#define __PPC_XSP(s)	((((s) & 0x1e) | (((s) >> 5) & 0x1)) << 21)
+#define __PPC_XTP(s)	__PPC_XSP(s)
 #define __PPC_T_TLB(t)	(((t) & 0x3) << 21)
 #define __PPC_WC(w)	(((w) & 0x3) << 21)
 #define __PPC_WS(w)	(((w) & 0x1f) << 11)
@@ -394,6 +399,14 @@
 #define PPC_RAW_XVCPSGNDP(t, a, b)	((0xf0000780 | VSX_XX3((t), (a), (b))))
 #define PPC_RAW_VPERMXOR(vrt, vra, vrb, vrc) \
 	((0x1000002d | ___PPC_RT(vrt) | ___PPC_RA(vra) | ___PPC_RB(vrb) | (((vrc) & 0x1f) << 6)))
+#define PPC_RAW_LXVP(xtp, a, i)		(0x18000000 | __PPC_XTP(xtp) | ___PPC_RA(a) | IMM_DQ(i))
+#define PPC_RAW_STXVP(xsp, a, i)	(0x18000001 | __PPC_XSP(xsp) | ___PPC_RA(a) | IMM_DQ(i))
+#define PPC_RAW_LXVPX(xtp, a, b)	(0x7c00029a | __PPC_XTP(xtp) | ___PPC_RA(a) | ___PPC_RB(b))
+#define PPC_RAW_STXVPX(xsp, a, b)	(0x7c00039a | __PPC_XSP(xsp) | ___PPC_RA(a) | ___PPC_RB(b))
+#define PPC_RAW_PLXVP(xtp, i, a, pr) \
+	((PPC_PREFIX_8LS | __PPC_PRFX_R(pr) | IMM_D0(i)) << 32 | (0xe8000000 | __PPC_XTP(xtp) | ___PPC_RA(a) | IMM_D1(i)))
+#define PPC_RAW_PSTXVP(xsp, i, a, pr) \
+	((PPC_PREFIX_8LS | __PPC_PRFX_R(pr) | IMM_D0(i)) << 32 | (0xf8000000 | __PPC_XSP(xsp) | ___PPC_RA(a) | IMM_D1(i)))
 #define PPC_RAW_NAP			(0x4c000364)
 #define PPC_RAW_SLEEP			(0x4c0003a4)
 #define PPC_RAW_WINKLE			(0x4c0003e4)