---

yaml --- r: 330258 b: refs/heads/master c: 5473eb1 h: refs/heads/master v: v3
git-mirror · Sep 5, 2012 · 52ebce7 · 52ebce7
1 parent 2e3710c
commit 52ebce7
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Showing 4 changed files with 22 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a1310757218e0757ee77d2ce05c43028430ed9dd
+refs/heads/master: 5473eb1c07009956be5f4df65d51f8e24d8eb1de
diff --git a/trunk/arch/powerpc/include/asm/exception-64e.h b/trunk/arch/powerpc/include/asm/exception-64e.h
@@ -37,6 +37,7 @@
  * critical data
  */
 
+#define PACA_EXGDBELL PACA_EXGEN
 
 /* We are out of SPRGs so we save some things in the PACA. The normal
  * exception frame is smaller than the CRIT or MC one though

diff --git a/trunk/arch/powerpc/include/asm/reg.h b/trunk/arch/powerpc/include/asm/reg.h
@@ -863,6 +863,7 @@
 #define SPRN_SPRG_TLB_EXFRAME	SPRN_SPRG2
 #define SPRN_SPRG_TLB_SCRATCH	SPRN_SPRG6
 #define SPRN_SPRG_GEN_SCRATCH	SPRN_SPRG0
+#define SPRN_SPRG_GDBELL_SCRATCH SPRN_SPRG_GEN_SCRATCH
 
 #define SET_PACA(rX)	mtspr	SPRN_SPRG_PACA,rX
 #define GET_PACA(rX)	mfspr	rX,SPRN_SPRG_PACA

diff --git a/trunk/arch/powerpc/kernel/exceptions-64e.S b/trunk/arch/powerpc/kernel/exceptions-64e.S
@@ -59,6 +59,10 @@
 #define SPRN_GEN_SRR0	SPRN_SRR0
 #define SPRN_GEN_SRR1	SPRN_SRR1
 
+#define	GDBELL_SET_KSTACK	GEN_SET_KSTACK
+#define SPRN_GDBELL_SRR0	SPRN_GSRR0
+#define SPRN_GDBELL_SRR1	SPRN_GSRR1
+
 #define CRIT_SET_KSTACK						            \
 	ld	r1,PACA_CRIT_STACK(r13);				    \
 	subi	r1,r1,SPECIAL_EXC_FRAME_SIZE;
@@ -89,10 +93,13 @@
 #define MC_EXCEPTION_PROLOG(n, addition)				    \
 	EXCEPTION_PROLOG(n, MC, addition##_MC(n))
 
+#define GDBELL_EXCEPTION_PROLOG(n, addition)				    \
+	EXCEPTION_PROLOG(n, GDBELL, addition##_GDBELL(n))
 
 /* Variants of the "addition" argument for the prolog
  */
 #define PROLOG_ADDITION_NONE_GEN(n)
+#define PROLOG_ADDITION_NONE_GDBELL(n)
 #define PROLOG_ADDITION_NONE_CRIT(n)
 #define PROLOG_ADDITION_NONE_DBG(n)
 #define PROLOG_ADDITION_NONE_MC(n)
@@ -543,8 +550,18 @@ kernel_dbg_exc:
 //	b	ret_from_crit_except
 	b	.
 
-/* Guest Doorbell */
-	MASKABLE_EXCEPTION(0x2c0, guest_doorbell, .unknown_exception, ACK_NONE)
+/*
+ *	Guest doorbell interrupt
+ *	This general exception use GSRRx save/restore registers
+ */
+	START_EXCEPTION(guest_doorbell);
+	GDBELL_EXCEPTION_PROLOG(0x2c0, PROLOG_ADDITION_NONE)
+	EXCEPTION_COMMON(0x2c0, PACA_EXGEN, INTS_KEEP)
+	addi	r3,r1,STACK_FRAME_OVERHEAD
+	bl	.save_nvgprs
+	INTS_RESTORE_HARD
+	bl	.unknown_exception
+	b	.ret_from_except
 
 /* Guest Doorbell critical Interrupt */
 	START_EXCEPTION(guest_doorbell_crit);