[Skiboot] [PATCH V6 12/21] core/pldm: Send a system firmware Graceful Restart request
Christophe Lombard
clombard at linux.vnet.ibm.com
Tue Sep 13 20:26:56 AEST 2022
Set the state information of the PLDM effecter identified by:
the entity type (PLDM_ENTITY_SYS_FIRMWARE) and the state set
PLDM_STATE_SET_SW_TERMINATION_STATUS with the effecter state:
PLDM_SW_TERM_GRACEFUL_RESTART_REQUESTED to request a platform restart.
Reviewed-by: Abhishek Singh Tomar <abhishek at linux.ibm.com>
Signed-off-by: Christophe Lombard <clombard at linux.vnet.ibm.com>
---
core/pldm/pldm-platform-requests.c | 75 ++++++++++++++++++++++++++++++
include/pldm.h | 5 ++
2 files changed, 80 insertions(+)
diff --git a/core/pldm/pldm-platform-requests.c b/core/pldm/pldm-platform-requests.c
index 93b98438..99d58158 100644
--- a/core/pldm/pldm-platform-requests.c
+++ b/core/pldm/pldm-platform-requests.c
@@ -39,6 +39,49 @@ static void pdr_init_complete(bool success)
pdr_ready = true;
}
+/*
+ * Search the matching record and return the effecter id.
+ * PDR type = PLDM_STATE_EFFECTER_PDR
+ */
+static int find_effecter_id_by_state_set_Id(uint16_t entity_type,
+ uint16_t state_set_id,
+ uint16_t *effecter_id)
+{
+ struct state_effecter_possible_states *possible_states;
+ struct pldm_state_effecter_pdr *state_effecter_pdr;
+ const pldm_pdr_record *record = NULL;
+ uint8_t *outData = NULL;
+ uint32_t size;
+
+ do {
+ /* Find (first) PDR record by PLDM_STATE_EFFECTER_PDR type
+ * if record not NULL, then search will begin from this
+ * record's next record
+ */
+ record = pldm_pdr_find_record_by_type(
+ pdrs_repo, /* PDR repo handle */
+ PLDM_STATE_EFFECTER_PDR,
+ record, /* PDR record handle */
+ &outData, &size);
+
+ if (record) {
+ state_effecter_pdr = (struct pldm_state_effecter_pdr *) outData;
+
+ *effecter_id = le16_to_cpu(state_effecter_pdr->effecter_id);
+
+ possible_states = (struct state_effecter_possible_states *)
+ state_effecter_pdr->possible_states;
+
+ if ((le16_to_cpu(state_effecter_pdr->entity_type) == entity_type) &&
+ (le16_to_cpu(possible_states->state_set_id) == state_set_id))
+ return OPAL_SUCCESS;
+ }
+
+ } while (record);
+
+ return OPAL_PARAMETER;
+}
+
struct set_effecter_state_response {
uint8_t completion_code;
};
@@ -115,6 +158,38 @@ static int set_state_effecter_states_req(uint16_t effecter_id,
return OPAL_SUCCESS;
}
+/*
+ * entity_type: System Firmware
+ * state_set: Software Termination Status(129)
+ * states: Graceful Restart Requested(6)
+ */
+int pldm_platform_restart(void)
+{
+ set_effecter_state_field field;
+ uint16_t effecter_id;
+ int rc;
+
+ if (!pdr_ready)
+ return OPAL_HARDWARE;
+
+ rc = find_effecter_id_by_state_set_Id(
+ PLDM_ENTITY_SYS_FIRMWARE,
+ PLDM_STATE_SET_SW_TERMINATION_STATUS,
+ &effecter_id);
+ if (rc) {
+ prlog(PR_ERR, "%s - effecter id not found\n", __func__);
+ return rc;
+ }
+
+ field.set_request = PLDM_REQUEST_SET;
+ field.effecter_state = PLDM_SW_TERM_GRACEFUL_RESTART_REQUESTED;
+
+ prlog(PR_INFO, "sending system firmware Graceful Restart request (effecter_id: %d)\n",
+ effecter_id);
+
+ return set_state_effecter_states_req(effecter_id, &field, true);
+}
+
struct get_pdr_response {
uint8_t completion_code;
uint32_t next_record_hndl;
diff --git a/include/pldm.h b/include/pldm.h
index 3aae560c..2429b5e5 100644
--- a/include/pldm.h
+++ b/include/pldm.h
@@ -15,4 +15,9 @@ int pldm_mctp_init(uint8_t mode);
*/
void pldm_mctp_exit(void);
+/**
+ * Send a system firmware Graceful Restart request
+ */
+int pldm_platform_restart(void);
+
#endif /* __PLDM_H__ */
--
2.37.3
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