Add a command allocator and accessor APIs for the 'GET_LSA' mailbox command.
Cc: Ben Widawsky <[email protected]> Cc: Dan Williams <[email protected]> Reviewed-by: Dan Williams <[email protected]> Signed-off-by: Vishal Verma <[email protected]> --- cxl/lib/private.h | 5 +++++ cxl/lib/libcxl.c | 36 ++++++++++++++++++++++++++++++++++++ cxl/libcxl.h | 4 ++++ cxl/lib/libcxl.sym | 2 ++ 4 files changed, 47 insertions(+) diff --git a/cxl/lib/private.h b/cxl/lib/private.h index 885553a..bf3a897 100644 --- a/cxl/lib/private.h +++ b/cxl/lib/private.h @@ -73,6 +73,11 @@ struct cxl_cmd_identify { u8 qos_telemetry_caps; } __attribute__((packed)); +struct cxl_cmd_get_lsa_in { + le32 offset; + le32 length; +} __attribute__((packed)); + struct cxl_cmd_get_health_info { u8 health_status; u8 media_status; diff --git a/cxl/lib/libcxl.c b/cxl/lib/libcxl.c index 065824d..76913a2 100644 --- a/cxl/lib/libcxl.c +++ b/cxl/lib/libcxl.c @@ -1036,6 +1036,42 @@ CXL_EXPORT struct cxl_cmd *cxl_cmd_new_raw(struct cxl_memdev *memdev, return cmd; } +CXL_EXPORT struct cxl_cmd *cxl_cmd_new_read_label(struct cxl_memdev *memdev, + unsigned int offset, unsigned int length) +{ + struct cxl_cmd_get_lsa_in *get_lsa; + struct cxl_cmd *cmd; + + cmd = cxl_cmd_new_generic(memdev, CXL_MEM_COMMAND_ID_GET_LSA); + if (!cmd) + return NULL; + + get_lsa = (struct cxl_cmd_get_lsa_in *)cmd->send_cmd->in.payload; + get_lsa->offset = cpu_to_le32(offset); + get_lsa->length = cpu_to_le32(length); + return cmd; +} + +CXL_EXPORT ssize_t cxl_cmd_read_label_get_payload(struct cxl_cmd *cmd, + void *buf, unsigned int length) +{ + struct cxl_cmd_get_lsa_in *get_lsa; + void *payload; + int rc; + + rc = cxl_cmd_validate_status(cmd, CXL_MEM_COMMAND_ID_GET_LSA); + if (rc) + return rc; + + get_lsa = (struct cxl_cmd_get_lsa_in *)cmd->send_cmd->in.payload; + if (length > le32_to_cpu(get_lsa->length)) + return -EINVAL; + + payload = (void *)cmd->send_cmd->out.payload; + memcpy(buf, payload, length); + return length; +} + CXL_EXPORT int cxl_cmd_submit(struct cxl_cmd *cmd) { struct cxl_memdev *memdev = cmd->memdev; diff --git a/cxl/libcxl.h b/cxl/libcxl.h index eae2db8..7408745 100644 --- a/cxl/libcxl.h +++ b/cxl/libcxl.h @@ -95,6 +95,10 @@ int cxl_cmd_health_info_get_temperature(struct cxl_cmd *cmd); int cxl_cmd_health_info_get_dirty_shutdowns(struct cxl_cmd *cmd); int cxl_cmd_health_info_get_volatile_errors(struct cxl_cmd *cmd); int cxl_cmd_health_info_get_pmem_errors(struct cxl_cmd *cmd); +struct cxl_cmd *cxl_cmd_new_read_label(struct cxl_memdev *memdev, + unsigned int offset, unsigned int length); +ssize_t cxl_cmd_read_label_get_payload(struct cxl_cmd *cmd, void *buf, + unsigned int length); #ifdef __cplusplus } /* extern "C" */ diff --git a/cxl/lib/libcxl.sym b/cxl/lib/libcxl.sym index c83bc28..629322c 100644 --- a/cxl/lib/libcxl.sym +++ b/cxl/lib/libcxl.sym @@ -62,6 +62,8 @@ global: cxl_cmd_health_info_get_dirty_shutdowns; cxl_cmd_health_info_get_volatile_errors; cxl_cmd_health_info_get_pmem_errors; + cxl_cmd_new_read_label; + cxl_cmd_read_label_get_payload; local: *; }; -- 2.31.1
