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platform/chrome: cros_ec_trace: Add fields to command traces 

In ftrace, add more fields to the cros_ec command event:

  - Add size of commands to check if they are properly set.
  - Add offset (in case an EC is cascaded being another EC),
    to allow proper command output

With:

  echo 1 > events/cros_ec/cros_ec_cmd/enable

We now have (on samus)

Invalid command for the sensor stack:

  ectool-6942  [002] ....  3082.783116: cros_ec_request_done: version: 3,
  offset: 0, command: EC_CMD_MOTION_SENSE_CMD, outsize: 2, insize: 19,
  ec result: EC_RES_INVALID_PARAM, retval: 0

Powerd accessing PD EC being the main EC:

  powerd-1272  [002] ....    40.644026: cros_ec_request_done: version: 0,
  offset: 1, command: EC_CMD_USB_PD_POWER_INFO, outsize: 1, insize: 16,
  ec result: EC_RES_SUCCESS, retval: 16

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Acked-by: Raul E Rangel <rrangel@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
This commit is contained in:
Gwendal Grignou 2020-08-14 20:39:08 -07:00 committed by Enric Balletbo i Serra
parent a772336596
commit 8143182426
1 changed files with 21 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/platform/chrome/cros_ec_trace.h
View File

@ -23,14 +23,22 @@ TRACE_EVENT(cros_ec_request_start,
TP_ARGS(cmd),
TP_STRUCT__entry(
__field(uint32_t, version)
__field(uint32_t, offset)
__field(uint32_t, command)
__field(uint32_t, outsize)
__field(uint32_t, insize)
),
TP_fast_assign(
__entry->version = cmd->version;
__entry->command = cmd->command;
__entry->offset = cmd->command / EC_CMD_PASSTHRU_OFFSET(1);
__entry->command = cmd->command % EC_CMD_PASSTHRU_OFFSET(1);
__entry->outsize = cmd->outsize;
__entry->insize = cmd->insize;
),
TP_printk("version: %u, command: %s", __entry->version,
__print_symbolic(__entry->command, EC_CMDS))
TP_printk("version: %u, offset: %d, command: %s, outsize: %u, insize: %u",
__entry->version, __entry->offset,
__print_symbolic(__entry->command, EC_CMDS),
__entry->outsize, __entry->insize)
);
TRACE_EVENT(cros_ec_request_done,
@ -38,19 +46,26 @@ TRACE_EVENT(cros_ec_request_done,
TP_ARGS(cmd, retval),
TP_STRUCT__entry(
__field(uint32_t, version)
__field(uint32_t, offset)
__field(uint32_t, command)
__field(uint32_t, outsize)
__field(uint32_t, insize)
__field(uint32_t, result)
__field(int, retval)
),
TP_fast_assign(
__entry->version = cmd->version;
__entry->command = cmd->command;
__entry->offset = cmd->command / EC_CMD_PASSTHRU_OFFSET(1);
__entry->command = cmd->command % EC_CMD_PASSTHRU_OFFSET(1);
__entry->outsize = cmd->outsize;
__entry->insize = cmd->insize;
__entry->result = cmd->result;
__entry->retval = retval;
),
TP_printk("version: %u, command: %s, ec result: %s, retval: %d",
__entry->version,
TP_printk("version: %u, offset: %d, command: %s, outsize: %u, insize: %u, ec result: %s, retval: %u",
__entry->version, __entry->offset,
__print_symbolic(__entry->command, EC_CMDS),
__entry->outsize, __entry->insize,
__print_symbolic(__entry->result, EC_RESULT),
__entry->retval)
);