From 8fe93f8d850a24581e9d47df5814b257fe451052 Mon Sep 17 00:00:00 2001 From: Brian King Date: Wed, 7 Jul 2010 12:31:01 +0000 Subject: powerpc/pseries: Migration code reorganization / hibernation prep Partition hibernation will use some of the same code as is currently used for Live Partition Migration. This function further abstracts this code such that code outside of rtas.c can utilize it. It also changes the error field in the suspend me data structure to be an atomic type, since it is set and checked on different cpus without any barriers or locking. Signed-off-by: Brian King Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/rtas.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'arch/powerpc/include/asm/rtas.h') diff --git a/arch/powerpc/include/asm/rtas.h b/arch/powerpc/include/asm/rtas.h index 20de73c3668..8941c54b30e 100644 --- a/arch/powerpc/include/asm/rtas.h +++ b/arch/powerpc/include/asm/rtas.h @@ -63,6 +63,14 @@ struct rtas_t { struct device_node *dev; /* virtual address pointer */ }; +struct rtas_suspend_me_data { + atomic_t working; /* number of cpus accessing this struct */ + atomic_t done; + int token; /* ibm,suspend-me */ + atomic_t error; + struct completion *complete; /* wait on this until working == 0 */ +}; + /* RTAS event classes */ #define RTAS_INTERNAL_ERROR 0x80000000 /* set bit 0 */ #define RTAS_EPOW_WARNING 0x40000000 /* set bit 1 */ @@ -174,6 +182,8 @@ extern int rtas_set_indicator(int indicator, int index, int new_value); extern int rtas_set_indicator_fast(int indicator, int index, int new_value); extern void rtas_progress(char *s, unsigned short hex); extern void rtas_initialize(void); +extern int rtas_suspend_cpu(struct rtas_suspend_me_data *data); +extern int rtas_suspend_last_cpu(struct rtas_suspend_me_data *data); struct rtc_time; extern unsigned long rtas_get_boot_time(void); -- cgit v1.2.3-70-g09d2 From b08e281b5ae681abcbc1815c13d4a3eb3df4ff1b Mon Sep 17 00:00:00 2001 From: Mark Nelson Date: Wed, 26 May 2010 21:40:39 +0000 Subject: powerpc/pseries: Rename RAS_VECTOR_OFFSET to RTAS_VECTOR_EXTERNAL_INTERRUPT and move to rtas.h The RAS code has a #define, RAS_VECTOR_OFFSET, that's used in the check-exception RTAS call for the vector offset of the exception. We'll be using this same vector offset for the upcoming IO Event interrupts code (0x500) so let's move it to include/asm/rtas.h and call it RTAS_VECTOR_EXTERNAL_INTERRUPT. Signed-off-by: Mark Nelson Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/rtas.h | 3 +++ arch/powerpc/platforms/pseries/ras.c | 5 ++--- 2 files changed, 5 insertions(+), 3 deletions(-) (limited to 'arch/powerpc/include/asm/rtas.h') diff --git a/arch/powerpc/include/asm/rtas.h b/arch/powerpc/include/asm/rtas.h index 8941c54b30e..3d35f8ae377 100644 --- a/arch/powerpc/include/asm/rtas.h +++ b/arch/powerpc/include/asm/rtas.h @@ -145,6 +145,9 @@ struct rtas_suspend_me_data { #define RTAS_TYPE_PMGM_CONFIG_CHANGE 0x70 #define RTAS_TYPE_PMGM_SERVICE_PROC 0x71 +/* RTAS check-exception vector offset */ +#define RTAS_VECTOR_EXTERNAL_INTERRUPT 0x500 + struct rtas_error_log { unsigned long version:8; /* Architectural version */ unsigned long severity:3; /* Severity level of error */ diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c index 41a3e9a039e..a4fc6da87c2 100644 --- a/arch/powerpc/platforms/pseries/ras.c +++ b/arch/powerpc/platforms/pseries/ras.c @@ -61,7 +61,6 @@ static int ras_check_exception_token; #define EPOW_SENSOR_TOKEN 9 #define EPOW_SENSOR_INDEX 0 -#define RAS_VECTOR_OFFSET 0x500 static irqreturn_t ras_epow_interrupt(int irq, void *dev_id); static irqreturn_t ras_error_interrupt(int irq, void *dev_id); @@ -121,7 +120,7 @@ static irqreturn_t ras_epow_interrupt(int irq, void *dev_id) spin_lock(&ras_log_buf_lock); status = rtas_call(ras_check_exception_token, 6, 1, NULL, - RAS_VECTOR_OFFSET, + RTAS_VECTOR_EXTERNAL_INTERRUPT, irq_map[irq].hwirq, RTAS_EPOW_WARNING | RTAS_POWERMGM_EVENTS, critical, __pa(&ras_log_buf), @@ -156,7 +155,7 @@ static irqreturn_t ras_error_interrupt(int irq, void *dev_id) spin_lock(&ras_log_buf_lock); status = rtas_call(ras_check_exception_token, 6, 1, NULL, - RAS_VECTOR_OFFSET, + RTAS_VECTOR_EXTERNAL_INTERRUPT, irq_map[irq].hwirq, RTAS_INTERNAL_ERROR, 1 /*Time Critical */, __pa(&ras_log_buf), -- cgit v1.2.3-70-g09d2