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author | Christophe Lombard <clombard@linux.ibm.com> | 2023-08-29 11:23:35 +0200 |
---|---|---|
committer | Reza Arbab <arbab@linux.ibm.com> | 2023-09-12 14:22:11 -0500 |
commit | d9b5fca6fb98541c921949145441b72879fa6519 (patch) | |
tree | 3326fd3b594b9f9109e1541b0dcd66b08643ad3e | |
parent | 20e0ca75caa69ddd0dce24737eb0196c72871882 (diff) | |
download | skiboot-d9b5fca6fb98541c921949145441b72879fa6519.zip skiboot-d9b5fca6fb98541c921949145441b72879fa6519.tar.gz skiboot-d9b5fca6fb98541c921949145441b72879fa6519.tar.bz2 |
core/pldm: PLDM for File-IO operations
The ibm/libpldm library implements IBM OEM commands support for PLDM and
specially encode and decode APIs for in-band readFile and writeFile
commands.
The GetFileTable request message is used to retrieve the file table which
contains the list of lid files available and their attributes.
Reviewed-by: Abhishek Singh Tomar <abhishek@linux.ibm.com>
Signed-off-by: Christophe Lombard <clombard@linux.ibm.com>
Signed-off-by: Reza Arbab <arbab@linux.ibm.com>
-rw-r--r-- | core/pldm/Makefile.inc | 1 | ||||
-rw-r--r-- | core/pldm/pldm-file-io-requests.c | 156 | ||||
-rw-r--r-- | core/pldm/pldm-mctp.c | 4 | ||||
-rw-r--r-- | core/pldm/pldm.h | 2 |
4 files changed, 162 insertions, 1 deletions
diff --git a/core/pldm/Makefile.inc b/core/pldm/Makefile.inc index 0b54b7e..d89e4c2 100644 --- a/core/pldm/Makefile.inc +++ b/core/pldm/Makefile.inc @@ -10,6 +10,7 @@ CPPFLAGS += -I$(SRC)/pldm/include/libpldm/oem/ibm/ PLDM_OBJS = pldm-mctp.o pldm-responder.o pldm-requester.o PLDM_OBJS += pldm-base-requests.o pldm-platform-requests.o PLDM_OBJS += pldm-bios-requests.o pldm-fru-requests.o +PLDM_OBJS += pldm-file-io-requests.o PLDM = $(PLDM_DIR)/built-in.a $(PLDM): $(PLDM_OBJS:%=$(PLDM_DIR)/%) diff --git a/core/pldm/pldm-file-io-requests.c b/core/pldm/pldm-file-io-requests.c new file mode 100644 index 0000000..11251a3 --- /dev/null +++ b/core/pldm/pldm-file-io-requests.c @@ -0,0 +1,156 @@ +// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later +// Copyright 2022 IBM Corp. + +#define pr_fmt(fmt) "PLDM: " fmt + +#include <opal.h> +#include <stdio.h> +#include <string.h> +#include <inttypes.h> +#include <libpldm/file_io.h> +#include "pldm.h" + +/* list of lid files available */ +static void *file_attr_table; +static size_t file_attr_length; + +static bool file_io_ready; + +static void file_io_init_complete(bool success) +{ + /* Read not successful, error out and free the buffer */ + if (!success) { + file_io_ready = false; + + if (file_attr_table != NULL) { + free(file_attr_table); + file_attr_length = 0; + } + return; + } + + /* Mark ready */ + file_io_ready = true; +} + +/* + * Send/receive a PLDM GetFileTable request message. + * The file table contains the list of files available and + * their attributes. + * + * Ex: + * { + * "FileHandle": "11", + * "FileNameLength": 12, + * "FileName": "81e0066b.lid", + * "FileSize": 589824, + * "FileTraits": 6 + * }, + */ +static int get_file_table_req(void) +{ + size_t data_size = PLDM_MSG_SIZE(struct pldm_get_file_table_req); + size_t response_len, payload_len; + uint8_t file_table_data_start_offset; + uint8_t transfer_flag, completion_code; + struct pldm_tx_data *tx = NULL; + uint32_t next_transfer_handle; + void *response_msg; + int rc = OPAL_SUCCESS; + + struct pldm_get_file_table_req file_table_req = { + .transfer_handle = 0, /* (0 if operation op is FIRSTPART) */ + .operation_flag = PLDM_GET_FIRSTPART, + .table_type = PLDM_FILE_ATTRIBUTE_TABLE, + }; + + prlog(PR_DEBUG, "%s - GetFileReq\n", __func__); + + /* Encode the file table request */ + tx = zalloc(sizeof(struct pldm_tx_data) + data_size); + if (!tx) + return OPAL_NO_MEM; + tx->data_size = data_size; + + rc = encode_get_file_table_req( + DEFAULT_INSTANCE_ID, + file_table_req.transfer_handle, + file_table_req.operation_flag, + file_table_req.table_type, + (struct pldm_msg *)tx->data); + if (rc != PLDM_SUCCESS) { + prlog(PR_ERR, "Encode GetFileReq Error, rc: %d\n", rc); + free(tx); + return OPAL_PARAMETER; + } + + /* Send and get the response message bytes */ + rc = pldm_requester_queue_and_wait(tx, + &response_msg, &response_len); + if (rc) { + prlog(PR_ERR, "Communication Error, req: GetFileReq, rc: %d\n", rc); + free(tx); + return rc; + } + + /* Decode the message */ + payload_len = response_len - sizeof(struct pldm_msg_hdr); + rc = decode_get_file_table_resp( + response_msg, + payload_len, + &completion_code, + &next_transfer_handle, + &transfer_flag, + &file_table_data_start_offset, + &file_attr_length); + if (rc != PLDM_SUCCESS || completion_code != PLDM_SUCCESS) { + prlog(PR_ERR, "Decode GetFileResp Error, rc: %d, cc: %d\n", + rc, completion_code); + rc = OPAL_PARAMETER; + goto out; + } + + /* we do not support multipart transfer */ + if ((next_transfer_handle != PLDM_GET_NEXTPART) || + (transfer_flag != PLDM_START_AND_END)) { + prlog(PR_ERR, "Transfert GetFileResp not complete, " + "transfer_hndl: %d, transfer_flag: %d\n", + next_transfer_handle, + transfer_flag); + } + + file_attr_table = zalloc(file_attr_length); + if (!file_attr_table) { + rc = OPAL_NO_MEM; + goto out; + } + + memcpy(file_attr_table, + ((struct pldm_msg *)response_msg)->payload + + file_table_data_start_offset, + file_attr_length); + +out: + free(tx); + free(response_msg); + return rc; +} + +int pldm_file_io_init(void) +{ + int rc; + + /* PLDM GetFileTable request */ + rc = get_file_table_req(); + if (rc) + goto err; + + file_io_init_complete(true); + prlog(PR_DEBUG, "%s - done\n", __func__); + + return OPAL_SUCCESS; + +err: + file_io_init_complete(false); + return rc; +} diff --git a/core/pldm/pldm-mctp.c b/core/pldm/pldm-mctp.c index b31587f..fb7d8a1 100644 --- a/core/pldm/pldm-mctp.c +++ b/core/pldm/pldm-mctp.c @@ -74,7 +74,7 @@ out: int pldm_mctp_init(void) { - int nbr_elt = 7, rc = OPAL_SUCCESS; + int nbr_elt = 8, rc = OPAL_SUCCESS; int (*pldm_config[])(void) = { ast_mctp_init, /* MCTP Binding */ @@ -84,6 +84,7 @@ int pldm_mctp_init(void) pldm_platform_init, /* Get PDRs data */ pldm_bios_init, /* Get Bios data */ pldm_fru_init, /* Get Fru data */ + pldm_file_io_init, /* Get FILE IO data */ }; const char *pldm_config_error[] = { @@ -94,6 +95,7 @@ int pldm_mctp_init(void) "Failed to retrieve Data Records", "Failed to retrieve Bios data", "Failed to retrieve Fru data", + "Failed to retrieve File io data", }; prlog(PR_NOTICE, "%s - Getting PLDM data\n", __func__); diff --git a/core/pldm/pldm.h b/core/pldm/pldm.h index 59155fb..270cfd6 100644 --- a/core/pldm/pldm.h +++ b/core/pldm/pldm.h @@ -52,6 +52,8 @@ int pldm_responder_handle_request(struct pldm_rx_data *rx); int pldm_responder_init(void); /* Requester support */ +int pldm_file_io_init(void); + int pldm_fru_get_bmc_version(void *bv, int len); int pldm_fru_init(void); |