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authorMahesh Salgaonkar <mahesh@linux.vnet.ibm.com>2014-07-29 18:40:07 +0530
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2014-08-05 16:33:52 +1000
commit0ef95b411e73d8789100d017c02c1329c5055802 (patch)
tree2438351ab90d8423ffe63bf49e1036a7d83a7950 /arch/powerpc/include
parent0869b6fd209bda402576a9a559120ddd4f61198e (diff)
downloadop-kernel-dev-0ef95b411e73d8789100d017c02c1329c5055802.zip
op-kernel-dev-0ef95b411e73d8789100d017c02c1329c5055802.tar.gz
powerpc/powernv: Invoke opal call to handle hmi.
When we hit the HMI in Linux, invoke opal call to handle/recover from HMI errors in real mode and then in virtual mode during check_irq_replay() invoke opal_poll_events()/opal_do_notifier() to retrieve HMI event from OPAL and act accordingly. Now that we are ready to handle HMI interrupt directly in linux, remove the HMI interrupt registration with firmware. Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include')
-rw-r--r--arch/powerpc/include/asm/opal.h47
-rw-r--r--arch/powerpc/include/asm/paca.h1
2 files changed, 48 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
index efc16c3..b2f8ce1 100644
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch/powerpc/include/asm/opal.h
@@ -148,6 +148,7 @@ struct opal_sg_list {
#define OPAL_DUMP_RESEND 91
#define OPAL_DUMP_INFO2 94
#define OPAL_PCI_EEH_FREEZE_SET 97
+#define OPAL_HANDLE_HMI 98
#ifndef __ASSEMBLY__
@@ -245,6 +246,7 @@ enum OpalMessageType {
OPAL_MSG_MEM_ERR,
OPAL_MSG_EPOW,
OPAL_MSG_SHUTDOWN,
+ OPAL_MSG_HMI_EVT,
OPAL_MSG_TYPE_MAX,
};
@@ -513,6 +515,50 @@ struct OpalMemoryErrorData {
} u;
};
+/* HMI interrupt event */
+enum OpalHMI_Version {
+ OpalHMIEvt_V1 = 1,
+};
+
+enum OpalHMI_Severity {
+ OpalHMI_SEV_NO_ERROR = 0,
+ OpalHMI_SEV_WARNING = 1,
+ OpalHMI_SEV_ERROR_SYNC = 2,
+ OpalHMI_SEV_FATAL = 3,
+};
+
+enum OpalHMI_Disposition {
+ OpalHMI_DISPOSITION_RECOVERED = 0,
+ OpalHMI_DISPOSITION_NOT_RECOVERED = 1,
+};
+
+enum OpalHMI_ErrType {
+ OpalHMI_ERROR_MALFUNC_ALERT = 0,
+ OpalHMI_ERROR_PROC_RECOV_DONE,
+ OpalHMI_ERROR_PROC_RECOV_DONE_AGAIN,
+ OpalHMI_ERROR_PROC_RECOV_MASKED,
+ OpalHMI_ERROR_TFAC,
+ OpalHMI_ERROR_TFMR_PARITY,
+ OpalHMI_ERROR_HA_OVERFLOW_WARN,
+ OpalHMI_ERROR_XSCOM_FAIL,
+ OpalHMI_ERROR_XSCOM_DONE,
+ OpalHMI_ERROR_SCOM_FIR,
+ OpalHMI_ERROR_DEBUG_TRIG_FIR,
+ OpalHMI_ERROR_HYP_RESOURCE,
+};
+
+struct OpalHMIEvent {
+ uint8_t version; /* 0x00 */
+ uint8_t severity; /* 0x01 */
+ uint8_t type; /* 0x02 */
+ uint8_t disposition; /* 0x03 */
+ uint8_t reserved_1[4]; /* 0x04 */
+
+ __be64 hmer;
+ /* TFMR register. Valid only for TFAC and TFMR_PARITY error type. */
+ __be64 tfmr;
+};
+
enum {
OPAL_P7IOC_DIAG_TYPE_NONE = 0,
OPAL_P7IOC_DIAG_TYPE_RGC = 1,
@@ -873,6 +919,7 @@ int64_t opal_get_param(uint64_t token, uint32_t param_id, uint64_t buffer,
int64_t opal_set_param(uint64_t token, uint32_t param_id, uint64_t buffer,
uint64_t length);
int64_t opal_sensor_read(uint32_t sensor_hndl, int token, __be32 *sensor_data);
+int64_t opal_handle_hmi(void);
/* Internal functions */
extern int early_init_dt_scan_opal(unsigned long node, const char *uname,
diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h
index 5abde4e..a5139ea 100644
--- a/arch/powerpc/include/asm/paca.h
+++ b/arch/powerpc/include/asm/paca.h
@@ -167,6 +167,7 @@ struct paca_struct {
* and already using emergency stack.
*/
u16 in_mce;
+ u8 hmi_event_available; /* HMI event is available */
#endif
/* Stuff for accurate time accounting */
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