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authorKumar Gala <galak@kernel.crashing.org>2008-07-16 01:12:25 +0400
committerKumar Gala <galak@kernel.crashing.org>2008-09-25 01:29:40 +0400
commit0ba3418b8b1c85ee1771c63f1dd12041614e56ff (patch)
tree6f77bf668e76725710aae5126054eebd5913d319 /arch/powerpc/include/asm/reg_booke.h
parent1afb7f809bfb8fad9eec9419f3dfd75cee746ebd (diff)
downloadlinux-0ba3418b8b1c85ee1771c63f1dd12041614e56ff.tar.xz
powerpc: Introduce local (non-broadcast) forms of tlb invalidates
Introduced a new set of low level tlb invalidate functions that do not broadcast invalidates on the bus: _tlbil_all - invalidate all _tlbil_pid - invalidate based on process id (or mm context) _tlbil_va - invalidate based on virtual address (ea + pid) On non-SMP configs _tlbil_all should be functionally equivalent to _tlbia and _tlbil_va should be functionally equivalent to _tlbie. The intent of this change is to handle SMP based invalidates via IPIs instead of broadcasts as the mechanism scales better for larger number of cores. On e500 (fsl-booke mmu) based cores move to using MMUCSR for invalidate alls and tlbsx/tlbwe for invalidate virtual address. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/reg_booke.h')
-rw-r--r--arch/powerpc/include/asm/reg_booke.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/reg_booke.h b/arch/powerpc/include/asm/reg_booke.h
index be980f4ee495..67453766bff1 100644
--- a/arch/powerpc/include/asm/reg_booke.h
+++ b/arch/powerpc/include/asm/reg_booke.h
@@ -109,6 +109,7 @@
#define SPRN_EVPR 0x3D6 /* Exception Vector Prefix Register */
#define SPRN_L1CSR0 0x3F2 /* L1 Cache Control and Status Register 0 */
#define SPRN_L1CSR1 0x3F3 /* L1 Cache Control and Status Register 1 */
+#define SPRN_MMUCSR0 0x3F4 /* MMU Control and Status Register 0 */
#define SPRN_PIT 0x3DB /* Programmable Interval Timer */
#define SPRN_BUCSR 0x3F5 /* Branch Unit Control and Status */
#define SPRN_L2CSR0 0x3F9 /* L2 Data Cache Control and Status Register 0 */
@@ -410,6 +411,12 @@
#define L2CSR0_L2LOA 0x00000080 /* L2 Cache Lock Overflow Allocate */
#define L2CSR0_L2LO 0x00000020 /* L2 Cache Lock Overflow */
+/* Bit definitions for MMUCSR0 */
+#define MMUCSR0_TLB1FI 0x00000002 /* TLB1 Flash invalidate */
+#define MMUCSR0_TLB0FI 0x00000004 /* TLB0 Flash invalidate */
+#define MMUCSR0_TLB2FI 0x00000040 /* TLB2 Flash invalidate */
+#define MMUCSR0_TLB3FI 0x00000020 /* TLB3 Flash invalidate */
+
/* Bit definitions for SGR. */
#define SGR_NORMAL 0 /* Speculative fetching allowed. */
#define SGR_GUARDED 1 /* Speculative fetching disallowed. */