From cb46fca88d14939da2785567253d0a297f31be27 Mon Sep 17 00:00:00 2001 From: Davidlohr Bueso Date: Tue, 29 Aug 2023 08:20:14 -0700 Subject: [PATCH] cxl: Add Support for Get Timestamp Add the call to the UAPI such that userspace may corelate the timestamps from the device log with system wall time, if, for example there's any sort of inaccuracy or skew in the device. Signed-off-by: Davidlohr Bueso Reviewed-by: Dave Jiang Reviewed-by: Jonathan Cameron Link: https://lore.kernel.org/r/20230829152014.15452-1-dave@stgolabs.net Signed-off-by: Dan Williams --- drivers/cxl/core/mbox.c | 1 + drivers/cxl/cxlmem.h | 1 + include/uapi/linux/cxl_mem.h | 1 + 3 files changed, 3 insertions(+) diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c index 36270dcfb42e..b86dbd25740c 100644 --- a/drivers/cxl/core/mbox.c +++ b/drivers/cxl/core/mbox.c @@ -63,6 +63,7 @@ static struct cxl_mem_command cxl_mem_commands[CXL_MEM_COMMAND_ID_MAX] = { CXL_CMD(GET_SHUTDOWN_STATE, 0, 0x1, 0), CXL_CMD(SET_SHUTDOWN_STATE, 0x1, 0, 0), CXL_CMD(GET_SCAN_MEDIA_CAPS, 0x10, 0x4, 0), + CXL_CMD(GET_TIMESTAMP, 0, 0x8, 0), }; /* diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h index a2fcbca253f3..6a6becee402b 100644 --- a/drivers/cxl/cxlmem.h +++ b/drivers/cxl/cxlmem.h @@ -503,6 +503,7 @@ enum cxl_opcode { CXL_MBOX_OP_GET_FW_INFO = 0x0200, CXL_MBOX_OP_TRANSFER_FW = 0x0201, CXL_MBOX_OP_ACTIVATE_FW = 0x0202, + CXL_MBOX_OP_GET_TIMESTAMP = 0x0300, CXL_MBOX_OP_SET_TIMESTAMP = 0x0301, CXL_MBOX_OP_GET_SUPPORTED_LOGS = 0x0400, CXL_MBOX_OP_GET_LOG = 0x0401, diff --git a/include/uapi/linux/cxl_mem.h b/include/uapi/linux/cxl_mem.h index 14bc6e742148..42066f4eb890 100644 --- a/include/uapi/linux/cxl_mem.h +++ b/include/uapi/linux/cxl_mem.h @@ -46,6 +46,7 @@ ___C(GET_SCAN_MEDIA_CAPS, "Get Scan Media Capabilities"), \ ___DEPRECATED(SCAN_MEDIA, "Scan Media"), \ ___DEPRECATED(GET_SCAN_MEDIA, "Get Scan Media Results"), \ + ___C(GET_TIMESTAMP, "Get Timestamp"), \ ___C(MAX, "invalid / last command") #define ___C(a, b) CXL_MEM_COMMAND_ID_##a