[Skiboot] [PATCH V2 08/15] core/pldm: Update or create terminus locator in the given repo

Christophe Lombard clombard at linux.vnet.ibm.com
Fri Apr 29 19:47:37 AEST 2022


The Terminus Locator PDR forms the association between a TID and PLDM
Terminus Handle for a terminus.
This patch allows to add terminus locator record in the repository.
If a record matches with the Host TID, we activate the current terminus
locator record, otherwise a new record is created.

Signed-off-by: Christophe Lombard <clombard at linux.vnet.ibm.com>
---
 core/pldm/pldm-platform-requests.c | 180 +++++++++++++++++++++++++++++
 core/pldm/pldm.h                   |  15 +++
 2 files changed, 195 insertions(+)

diff --git a/core/pldm/pldm-platform-requests.c b/core/pldm/pldm-platform-requests.c
index 06cf407f..e3263b07 100644
--- a/core/pldm/pldm-platform-requests.c
+++ b/core/pldm/pldm-platform-requests.c
@@ -14,10 +14,16 @@
 #include "pldm.h"
 
 #define NO_MORE_PDR_HANDLES 0
+#define PDR_AUTO_CALCULATE_RECORD_HANDLE 0
+static bool PDR_IS_NOT_REMOTE;
 
 static pldm_pdr *repo;
 static bool pdr_ready;
 
+static uint32_t records_handle[20];
+static uint8_t hosted_pdrs;
+static int state_sensor_id = 1;
+
 static void pdr_init_complete(bool success)
 {
 	/* Read not successful, error out and free the buffer */
@@ -235,6 +241,145 @@ int pldm_platform_restart(void)
 	return set_state_effecter_states_req(effecter_id, &field, true);
 }
 
+static int add_states_sensor_pdr(pldm_pdr *repo,
+				 uint32_t *record_handle,
+				 uint16_t state_set_id,
+				 uint32_t states)
+{
+
+	struct state_sensor_possible_states *possible_states;
+	struct pldm_state_sensor_pdr *pdr;
+	uint8_t DEFAULT_CONTAINER_ID = 0;
+	size_t state_size, pdr_size, actual_pdr_size = 0;
+	uint8_t *state_storage;
+	uint32_t swapped;
+	int rc;
+
+	/* fill in possible states structure */
+	state_size = sizeof(struct state_sensor_possible_states)
+		     + sizeof(states)
+		     - sizeof(bitfield8_t);
+	state_storage = malloc(state_size);
+
+	possible_states = (struct state_sensor_possible_states *) state_storage;
+	possible_states->state_set_id = state_set_id;
+	possible_states->possible_states_size = sizeof(states);
+
+	/* need to swap the byte order for little endian order */
+	swapped = htole32(states);
+	memcpy(possible_states->states, &swapped, sizeof(swapped));
+
+	pdr_size = sizeof(struct pldm_state_sensor_pdr) + state_size;
+	pdr = malloc(pdr_size);
+
+	/* header */
+	pdr->hdr.record_handle = 0; /* ask libpldm to fill this out */
+	pdr->hdr.version = 0; /* will be filled out by the encoder */
+	pdr->hdr.type = 0; /* will be filled out by the encoder */
+	pdr->hdr.record_change_num = 0;
+	pdr->hdr.length = 0; /* will be filled out by the encoder */
+
+	/* body */
+	pdr->terminus_handle = HOST_TID;
+	pdr->sensor_id = state_sensor_id++;
+	pdr->entity_type = PLDM_ENTITY_SYS_BOARD;
+	pdr->entity_instance = 1;
+	pdr->container_id = DEFAULT_CONTAINER_ID;
+	pdr->sensor_init = PLDM_NO_INIT;
+	pdr->sensor_auxiliary_names_pdr = false;
+	pdr->composite_sensor_count = 1;
+
+	rc = encode_state_sensor_pdr(pdr, pdr_size,
+				     possible_states,
+				     state_size,
+				     &actual_pdr_size);
+
+	if (rc != PLDM_SUCCESS) {
+		prlog(PR_ERR, "%s - Failed to encode state sensor PDR, rc: %d\n",
+			      __func__, rc);
+		free(state_storage);
+		free(pdr);
+		return rc;
+	}
+
+	*record_handle = pldm_pdr_add(repo,
+				      (const uint8_t *) pdr, actual_pdr_size,
+				      PDR_AUTO_CALCULATE_RECORD_HANDLE,
+				      PDR_IS_NOT_REMOTE);
+
+	free(state_storage);
+	free(pdr);
+
+	return OPAL_SUCCESS;
+}
+
+/*
+ * Add boot progress record in the repository.
+ */
+static uint32_t add_boot_progress_pdr(pldm_pdr *repo,
+				      uint32_t *record_handle)
+{
+	int rc;
+
+	rc = add_states_sensor_pdr(
+			repo,
+			record_handle,
+			PLDM_STATE_SET_BOOT_PROGRESS,
+			enum_bit(PLDM_STATE_SET_BOOT_PROG_STATE_COMPLETED) |
+			enum_bit(PLDM_STATE_SET_BOOT_PROG_STATE_PCI_RESORUCE_CONFIG) |
+			enum_bit(PLDM_STATE_SET_BOOT_PROG_STATE_STARTING_OP_SYS));
+	if (rc) {
+		prlog(PR_ERR, "%s - Failed to add states sensor PDR, rc: %d\n",
+			      __func__, rc);
+		return rc;
+	}
+
+	prlog(PR_DEBUG, "Add boot progress pdr (record handle: %d)\n",
+			*record_handle);
+
+	return OPAL_SUCCESS;
+}
+
+/*
+ * Add terminus locator record in the repository.
+ */
+static int add_terminus_locator_pdr(pldm_pdr *repo,
+				    uint32_t *record_handle)
+{
+	struct pldm_terminus_locator_type_mctp_eid *locator_value;
+	struct pldm_terminus_locator_pdr pdr;
+	uint8_t DEFAULT_CONTAINER_ID = 0;
+	uint32_t size;
+
+	pdr.hdr.record_handle = 0; /* record_handle will be generated for us */
+	pdr.hdr.version = 1;
+	pdr.hdr.type = PLDM_TERMINUS_LOCATOR_PDR;
+	pdr.hdr.record_change_num = 0;
+	pdr.hdr.length = htole16(sizeof(struct pldm_terminus_locator_pdr) -
+				  sizeof(struct pldm_pdr_hdr));
+	pdr.terminus_handle = htole16(HOST_TID);
+	pdr.validity = PLDM_TL_PDR_VALID;
+	pdr.tid = HOST_TID;
+	pdr.container_id = DEFAULT_CONTAINER_ID;
+	pdr.terminus_locator_type = PLDM_TERMINUS_LOCATOR_TYPE_MCTP_EID;
+	pdr.terminus_locator_value_size = sizeof(struct pldm_terminus_locator_type_mctp_eid);
+	locator_value = (struct pldm_terminus_locator_type_mctp_eid *)pdr.terminus_locator_value;
+	locator_value->eid = HOST_EID;
+
+	size = sizeof(struct pldm_terminus_locator_pdr) +
+	       sizeof(struct pldm_terminus_locator_type_mctp_eid);
+
+	*record_handle = pldm_pdr_add(repo,
+				      (const uint8_t *)(&pdr), size,
+				      PDR_AUTO_CALCULATE_RECORD_HANDLE,
+				      PDR_IS_NOT_REMOTE);
+
+	prlog(PR_DEBUG, "Add terminus locator pdr (record handle: %d)\n",
+			 *record_handle);
+
+	return OPAL_SUCCESS;
+}
+
 static int send_repository_changed_event(uint32_t num_changed_pdrs,
 					 uint32_t *record_handle)
 {
@@ -353,6 +498,33 @@ static int send_repository_changed_event(uint32_t num_changed_pdrs,
 	return OPAL_SUCCESS;
 }
 
+static int add_hosted_pdrs(pldm_pdr *repo)
+{
+	uint32_t record_handle;
+	int rc = OPAL_SUCCESS;
+
+	hosted_pdrs = 0;
+
+	rc = add_boot_progress_pdr(repo, &record_handle);
+	if (!rc) {
+		records_handle[hosted_pdrs] = record_handle;
+		hosted_pdrs++;
+	}
+
+	rc = add_terminus_locator_pdr(repo, &record_handle);
+	if (!rc) {
+		records_handle[hosted_pdrs] = record_handle;
+		hosted_pdrs++;
+	}
+
+	/* tell BMC that these PDRs have changed */
+	rc = send_repository_changed_event(hosted_pdrs, records_handle);
+	if (rc)
+		prlog(PR_ERR, "%s - Failed to update hosted PDRs\n", __func__);
+
+	return rc;
+}
+
 struct get_pdr_response {
 	uint8_t completion_code;
 	uint32_t next_record_hndl;
@@ -553,6 +725,14 @@ int pldm_platform_init(void)
 		return rc;
 	}
 
+	/* add hosted pdrs */
+	rc = add_hosted_pdrs(repo);
+	if (rc) {
+		pdr_init_complete(false);
+		prlog(PR_ERR, "%s - done, rc: %d\n", __func__, rc);
+		return rc;
+	}
+
 	pdr_init_complete(true);
 	prlog(PR_DEBUG, "%s - done\n", __func__);
 
diff --git a/core/pldm/pldm.h b/core/pldm/pldm.h
index bc399271..8ec72b77 100644
--- a/core/pldm/pldm.h
+++ b/core/pldm/pldm.h
@@ -34,6 +34,21 @@ extern int watchdog_period_sec;
 /* For all of the encode functions just pass in a default ID (0x00) */
 #define DEFAULT_INSTANCE_ID 0
 
+/* Return an integer with a bit set in the position corresponding to
+ * the given enumeration (starting from 0 = the least significant
+ * bit) and zeroes in the other positions.
+ * Used for libpldm enumeration constants.
+ *
+ *
+ * @example enum_bit(0) = 0x00000001
+ * @example enum_bit(1) = 0x00000002
+ * @example enum_bit(4) = 0x00000010
+ */
+inline uint32_t enum_bit(unsigned int enumeration)
+{
+	return 1 << enumeration;
+}
+
 struct pldm_rx_data {
 	struct pldm_header_info hdrinf; /* parsed message header */
 
-- 
2.35.1



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