summaryrefslogtreecommitdiff
path: root/arch/powerpc/include/asm/dbell.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/include/asm/dbell.h')
-rw-r--r--arch/powerpc/include/asm/dbell.h40
1 files changed, 30 insertions, 10 deletions
diff --git a/arch/powerpc/include/asm/dbell.h b/arch/powerpc/include/asm/dbell.h
index 378167377065..f70cbfe0ec04 100644
--- a/arch/powerpc/include/asm/dbell.h
+++ b/arch/powerpc/include/asm/dbell.h
@@ -35,33 +35,53 @@ enum ppc_dbell {
#ifdef CONFIG_PPC_BOOK3S
#define PPC_DBELL_MSGTYPE PPC_DBELL_SERVER
-#define SPRN_DOORBELL_CPUTAG SPRN_TIR
-#define PPC_DBELL_TAG_MASK 0x7f
static inline void _ppc_msgsnd(u32 msg)
{
- if (cpu_has_feature(CPU_FTR_HVMODE))
- __asm__ __volatile__ (PPC_MSGSND(%0) : : "r" (msg));
- else
- __asm__ __volatile__ (PPC_MSGSNDP(%0) : : "r" (msg));
+ __asm__ __volatile__ (ASM_FTR_IFSET(PPC_MSGSND(%1), PPC_MSGSNDP(%1), %0)
+ : : "i" (CPU_FTR_HVMODE), "r" (msg));
+}
+
+/* sync before sending message */
+static inline void ppc_msgsnd_sync(void)
+{
+ __asm__ __volatile__ ("sync" : : : "memory");
+}
+
+/* sync after taking message interrupt */
+static inline void ppc_msgsync(void)
+{
+ /* sync is not required when taking messages from the same core */
+ __asm__ __volatile__ (ASM_FTR_IFSET(PPC_MSGSYNC " ; lwsync", "", %0)
+ : : "i" (CPU_FTR_HVMODE|CPU_FTR_ARCH_300));
}
#else /* CONFIG_PPC_BOOK3S */
#define PPC_DBELL_MSGTYPE PPC_DBELL
-#define SPRN_DOORBELL_CPUTAG SPRN_PIR
-#define PPC_DBELL_TAG_MASK 0x3fff
static inline void _ppc_msgsnd(u32 msg)
{
__asm__ __volatile__ (PPC_MSGSND(%0) : : "r" (msg));
}
+/* sync before sending message */
+static inline void ppc_msgsnd_sync(void)
+{
+ __asm__ __volatile__ ("sync" : : : "memory");
+}
+
+/* sync after taking message interrupt */
+static inline void ppc_msgsync(void)
+{
+}
+
#endif /* CONFIG_PPC_BOOK3S */
-extern void doorbell_cause_ipi(int cpu, unsigned long data);
+extern void doorbell_global_ipi(int cpu);
+extern void doorbell_core_ipi(int cpu);
+extern int doorbell_try_core_ipi(int cpu);
extern void doorbell_exception(struct pt_regs *regs);
-extern void doorbell_setup_this_cpu(void);
static inline void ppc_msgsnd(enum ppc_dbell type, u32 flags, u32 tag)
{