FSP: Notify FSP of Platform Log ID after Host Initiated Reset Reload

Trigging a Host Initiated Reset (when the host detects the FSP has gone
out to lunch and should be rebooted), would cause "Unknown Command" messages
to appear in the OPAL log.

This patch implements those messages

How to trigger FSP RR(HIR):

$ putmemproc 300000f8 0x00000000deadbeef
s1	k0:n0:s0:p00
ecmd_ppc putmemproc 300000f8 0x00000000deadbeef

Log showing unknown command:
/ # cat /sys/firmware/opal/msglog | grep -i ,3
[  110.232114723,3] FSP: fsp_trigger_reset() entry
[  188.431793837,3] FSP #0: Link down, starting R&R
[  464.109239162,3] FSP #0: Got XUP with no pending message !
[  466.340598554,3] FSP-DPO: Unknown command 0xce0900
[  466.340600126,3] FSP: Unhandled message ce0900

The message we need to handle is "Get PLID after host initiated FipS
reset/reload". When the FSP comes back from HIR, it asks "hey, so, which
error log explains why you rebooted me?". So, we tell it.

Reported-by: Pridhiviraj Paidipeddi <ppaidipe@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

2 files changed, 14 insertions, 5 deletions

diff --git a/include/errorlog.h b/include/errorlog.h
index 247198b..e9d5ad8 100644
--- a/include/errorlog.h
+++ b/include/errorlog.h
@@ -259,6 +259,7 @@ enum opal_reasoncode {
 	OPAL_RC_SURVE_INIT	    = OPAL_SRC_COMPONENT_SURVEILLANCE | 0x10,
 	OPAL_RC_SURVE_STATUS	    = OPAL_SRC_COMPONENT_SURVEILLANCE | 0x11,
 	OPAL_RC_SURVE_ACK	    = OPAL_SRC_COMPONENT_SURVEILLANCE | 0x12,
+	OPAL_INJECTED_HIR	    = OPAL_SRC_COMPONENT_SURVEILLANCE | 0x13,
 /* SYSPARAM */
 	OPAL_RC_SYSPARM_INIT	    = OPAL_SRC_COMPONENT_SYSPARAM | 0x10,
 	OPAL_RC_SYSPARM_MSG	    = OPAL_SRC_COMPONENT_SYSPARAM | 0x11,
@@ -313,8 +314,9 @@ enum opal_reasoncode {
 	OPAL_RC_SLW_GET		    = OPAL_SRC_COMPONENT_SLW | 0x12,
 	OPAL_RC_SLW_REG		    = OPAL_SRC_COMPONENT_SLW | 0x13,
 /* FSP	*/
-	OPAL_RC_FSP_POLL_TIMEOUT
-				    = OPAL_SRC_COMPONENT_FSP | 0x10,
+	OPAL_RC_FSP_POLL_TIMEOUT    = OPAL_SRC_COMPONENT_FSP | 0x10,
+	OPAL_RC_FSP_MBOX_ERR	    = OPAL_SRC_COMPONENT_FSP | 0x11,
+	OPAL_RC_FSP_DISR_HIR_MASK   = OPAL_SRC_COMPONENT_FSP | 0x12,
 /* I2C */
 	OPAL_RC_I2C_INIT	    = OPAL_SRC_COMPONENT_I2C | 0X10,
 	OPAL_RC_I2C_START_REQ	    = OPAL_SRC_COMPONENT_I2C | 0X11,
@@ -339,9 +341,12 @@ severity, subtype) static struct opal_err_info err_##reason =		\
 
 /* This is wrapper around the error log function, which creates
  * and commits the error to FSP.
- * Used for simple error logging
+ * Used for simple error logging.
+ * Returns a Log ID, if an error involves a service processor needing
+ * to be kicked, this logid can be sent to the service processor explaining
+ * *why* we kicked it. Log Id = -1 on error.
  */
-void log_simple_error(struct opal_err_info *e_info,
+uint32_t log_simple_error(struct opal_err_info *e_info,
 		const char *fmt, ...) __attribute__ ((format (printf, 2, 3)));
 
 #define e_info(reason_code) err_##reason_code
diff --git a/include/fsp.h b/include/fsp.h
index f75b6ad..e7f6a7b 100644
--- a/include/fsp.h
+++ b/include/fsp.h
@@ -368,6 +368,10 @@
 #define FSP_CMD_DEEP_REBOOT	0x1ce4e04 /* HV->FSP: Deep IPL */
 #define FSP_CMD_INIT_DPO	0x0ce5b00 /* FSP->HV: Initialize Delayed Power Off */
 #define FSP_RSP_INIT_DPO	0x0cedb00 /* HV->FSP: Response for DPO init command */
+#define FSP_CMD_GET_HIR_PLID	0x0ce0900 /* FSP->HV: Get Platform Log ID with
+					   * reason for Host Initiated Reset.
+					   */
+#define FSP_RSP_GET_HIR_PLID	0x0ce8900 /* HV->FSP: Reply with PLID */
 #define FSP_CMD_PANELSTATUS	0x0ce5c00 /* FSP->HV */
 #define FSP_CMD_PANELSTATUS_EX1	0x0ce5c02 /* FSP->HV */
 #define FSP_CMD_PANELSTATUS_EX2	0x0ce5c03 /* FSP->HV */
@@ -808,7 +812,7 @@ extern void fsp_ipmi_init(void);
 
 /* Reset/Reload */
 extern void fsp_reinit_fsp(void);
-extern void fsp_trigger_reset(void);
+extern void fsp_trigger_reset(uint32_t plid);
 extern void fsp_reset_links(void);
 extern bool fsp_in_rr(void);