[Skiboot] [PATCH V2 11/15] core/pldm: Decode the GetFruRecordTable request
Christophe Lombard
clombard at linux.vnet.ibm.com
Fri Apr 29 19:47:40 AEST 2022
The GetFRURecordTable command is used to get the FRU Record Table data.
This command is defined to allow the FRU Record Table data to be
transferred using a sequence of one or more command/response messages.
Signed-off-by: Christophe Lombard <clombard at linux.vnet.ibm.com>
---
core/pldm/pldm-fru-requests.c | 12 ++++++
core/pldm/pldm-responder.c | 78 +++++++++++++++++++++++++++++++++++
core/pldm/pldm.h | 2 +
3 files changed, 92 insertions(+)
diff --git a/core/pldm/pldm-fru-requests.c b/core/pldm/pldm-fru-requests.c
index 6da1fb55..863d94f9 100644
--- a/core/pldm/pldm-fru-requests.c
+++ b/core/pldm/pldm-fru-requests.c
@@ -199,3 +199,15 @@ void pldm_fru_add_record(uint32_t *table_length,
fru_table_length = *table_length;
}
+
+int pldm_fru_get_table(void **fru_record_table_bytes,
+ uint32_t *fru_record_table_size)
+{
+ if (!fru_table)
+ return OPAL_PARAMETER;
+
+ *fru_record_table_bytes = fru_table;
+ *fru_record_table_size = fru_table_length;
+
+ return OPAL_SUCCESS;
+}
diff --git a/core/pldm/pldm-responder.c b/core/pldm/pldm-responder.c
index f11317c5..626f8970 100644
--- a/core/pldm/pldm-responder.c
+++ b/core/pldm/pldm-responder.c
@@ -983,6 +983,83 @@ static struct pldm_cmd pldm_fru_get_record_table_metadata = {
.handler = fru_get_record_table_metadata_handler,
};
+/*
+ * GetFRURecordTable (0X02)
+ * The GetFRURecordTable command is used to get the FRU Record Table
+ * data. This command is defined to allow the FRU Record Table data to
+ * be transferred using a sequence of one or more command/response
+ * messages.
+ */
+static int fru_get_record_table_handler(const struct pldm_rx_data *req)
+{
+ struct pldm_get_fru_record_table_resp *resp;
+ void *fru_record_table_bytes;
+ uint32_t fru_record_table_size;
+ size_t response_length;
+ struct pldm_msg *msg;
+ char *response_msg;
+ int rc;
+
+ /* The getFruRecordTable requests do have request data, but it's
+ * only related to multi-part transfers which we don't support
+ * and which the BMC will not send us.
+ */
+
+ /* get fru record table */
+ rc = pldm_fru_get_table(&fru_record_table_bytes, &fru_record_table_size);
+ if (rc) {
+ prlog(PR_ERR, "Failed to get Fru Record Table\n");
+ pldm_cc_resp(req, req->hdrinf.pldm_type,
+ req->hdrinf.command, PLDM_ERROR);
+ return OPAL_PARAMETER;
+ }
+
+ /* create a PLDM response message for GetFRURecordTable */
+ response_length = sizeof(struct pldm_msg_hdr) +
+ sizeof(struct pldm_get_fru_record_table_resp) +
+ fru_record_table_size;
+ response_msg = malloc(response_length);
+ memset(response_msg, 0, response_length);
+
+ rc = encode_get_fru_record_table_resp(
+ req->hdrinf.instance,
+ PLDM_SUCCESS,
+ 0, // No next transfer handle
+ PLDM_START_AND_END,
+ (struct pldm_msg *)response_msg);
+ if (rc != PLDM_SUCCESS) {
+ prlog(PR_ERR, "Encode GetFruRecordTable Error, rc: %d\n", rc);
+ pldm_cc_resp(req, req->hdrinf.pldm_type,
+ req->hdrinf.command, PLDM_ERROR);
+ free(response_msg);
+ return OPAL_PARAMETER;
+ }
+
+ msg = (struct pldm_msg *)response_msg;
+ resp = (struct pldm_get_fru_record_table_resp *)(msg->payload);
+ memcpy(resp->fru_record_table_data,
+ fru_record_table_bytes,
+ fru_record_table_size);
+
+ /* send PLDM message over MCTP */
+ rc = pldm_send(req->source_eid, response_msg, response_length - 1);
+ if (rc) {
+ prlog(PR_ERR, "Failed to send GetFruRecordTable response, rc = %d\n", rc);
+ free(response_msg);
+ return OPAL_HARDWARE;
+ }
+
+ free(response_msg);
+
+ return OPAL_SUCCESS;
+}
+
+static struct pldm_cmd pldm_fru_get_record_table = {
+ .name = "PLDM_GET_FRU_RECORD_TABLE",
+ .pldm_cmd_id = PLDM_GET_FRU_RECORD_TABLE,
+ .handler = fru_get_record_table_handler,
+};
+
int pldm_rx_handle_request(struct pldm_rx_data *rx)
{
const struct pldm_type *t;
@@ -1034,6 +1111,7 @@ int pldm_mctp_responder_init(void)
/* Register platform commands we'll respond to - DSP0257 */
pldm_add_type(&pldm_fru_type);
pldm_add_cmd(&pldm_fru_type, &pldm_fru_get_record_table_metadata);
+ pldm_add_cmd(&pldm_fru_type, &pldm_fru_get_record_table);
return OPAL_SUCCESS;
}
diff --git a/core/pldm/pldm.h b/core/pldm/pldm.h
index d0ceb546..ef884995 100644
--- a/core/pldm/pldm.h
+++ b/core/pldm/pldm.h
@@ -91,6 +91,8 @@ int pldm_fru_get_record_by_option(uint16_t fru_table_handle,
void pldm_fru_add_record(uint32_t *fru_table_length,
uint16_t *total_record_set_identifiers,
uint16_t *total_table_records);
+int pldm_fru_get_table(void **fru_record_table_bytes,
+ uint32_t *fru_record_table_size);
int pldm_bios_find_lid_by_attr_name(const char *name, char **lid);
int pldm_bios_get_lids_id(char **lid_ids_string);
--
2.35.1
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