[Skiboot] [PATCH V6 12/21] core/pldm: Send a system firmware Graceful Restart request
Abhishek SIngh Tomar
abhishek at linux.ibm.com
Fri Sep 30 02:57:45 AEST 2022
On Tue, Sep 13, 2022 at 12:26:56PM +0200, Christophe Lombard wrote:
> 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>
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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