diff options
| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2023-01-30 15:13:27 +0000 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2023-01-30 11:30:51 -0800 |
| commit | fa8843451bec55f900b8673d9ddc0be02a61528a (patch) | |
| tree | 110232184185fa4f1e6f20dd385931d4ff0af48d /drivers/cxl/cxlmem.h | |
| parent | 7ebf38c9115ec3b4502c73b4377a7648374d700f (diff) | |
cxl/pci: Set the device timestamp
CXL r3.0 section 8.2.9.4.2 "Set Timestamp" recommends that the host sets
the timestamp after every Conventional or CXL Reset to ensure accurate
timestamps. This should include on initial boot up. The time base that
is being set is used by a device for the poison list overflow timestamp
and all event timestamps. Note that the command is optional and if
not supported and the device cannot return accurate timestamps it will
fill the fields in with an appropriate marker (see the specification
description of each timestamp).
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20230130151327.32415-1-Jonathan.Cameron@huawei.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/cxl/cxlmem.h')
| -rw-r--r-- | drivers/cxl/cxlmem.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h index f21692ccb7a2..802b5b396daf 100644 --- a/drivers/cxl/cxlmem.h +++ b/drivers/cxl/cxlmem.h @@ -309,6 +309,7 @@ enum cxl_opcode { CXL_MBOX_OP_SET_EVT_INT_POLICY = 0x0103, CXL_MBOX_OP_GET_FW_INFO = 0x0200, CXL_MBOX_OP_ACTIVATE_FW = 0x0202, + CXL_MBOX_OP_SET_TIMESTAMP = 0x0301, CXL_MBOX_OP_GET_SUPPORTED_LOGS = 0x0400, CXL_MBOX_OP_GET_LOG = 0x0401, CXL_MBOX_OP_IDENTIFY = 0x4000, @@ -537,6 +538,12 @@ struct cxl_mbox_set_partition_info { #define CXL_SET_PARTITION_IMMEDIATE_FLAG BIT(0) +/* Set Timestamp CXL 3.0 Spec 8.2.9.4.2 */ +struct cxl_mbox_set_timestamp_in { + __le64 timestamp; + +} __packed; + /** * struct cxl_mem_command - Driver representation of a memory device command * @info: Command information as it exists for the UAPI @@ -607,6 +614,8 @@ struct cxl_dev_state *cxl_dev_state_create(struct device *dev); void set_exclusive_cxl_commands(struct cxl_dev_state *cxlds, unsigned long *cmds); void clear_exclusive_cxl_commands(struct cxl_dev_state *cxlds, unsigned long *cmds); void cxl_mem_get_event_records(struct cxl_dev_state *cxlds, u32 status); +int cxl_set_timestamp(struct cxl_dev_state *cxlds); + #ifdef CONFIG_CXL_SUSPEND void cxl_mem_active_inc(void); void cxl_mem_active_dec(void); |