qca-swiss-army-knife: add ath10k trace-cmd plugin

This one's a skeleton as well.

[mcgrof: removed trailing white space from empty lines]
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>

tracing/plugins/ath10k.py

@@ -0,0 +1,133 @@
+#
+# Copyright (c) 2012 Qualcomm Atheros, Inc.
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+# trace-cmd plugin for ath10k, QCA Linux wireless driver
+
+
+import tracecmd
+import struct
+import binascii
+
+def hexdump(buf, prefix=None):
+    s = binascii.b2a_hex(buf)
+    s_len = len(s)
+    result = ""
+
+    if prefix == None:
+        prefix = ""
+
+    for i in range(s_len / 2):
+        if i % 16 == 0:
+            result = result + ("%s%04x: " % (prefix, i))
+
+        result = result + (s[2*i] + s[2*i+1] + " ")
+
+        if (i + 1) % 16 == 0:
+            result = result + "\n"
+
+    # FIXME: if len(s) % 16 == 0 there's an extra \n in the end
+
+    return result
+
+wmi_scan_event_names = [
+    [0x1,  "WMI_SCAN_EVENT_STARTED" ],
+    [0x2,  "WMI_SCAN_EVENT_COMPLETED" ],
+    [0x4, "WMI_SCAN_EVENT_BSS_CHANNEL" ],
+    [0x8,  "WMI_SCAN_EVENT_FOREIGN_CHANNEL"],
+    [0x10, "WMI_SCAN_EVENT_DEQUEUED" ],
+    [0x20, "WMI_SCAN_EVENT_PREEMPTED" ],
+    [0x40, "WMI_SCAN_EVENT_START_FAILED" ],
+    ]
+
+def wmi_event_scan(pevent, trace_seq, event, buf):
+    hdr = struct.unpack("<IIIIII", buf[0:24])
+    event = hdr[0]
+    reason = hdr[1]
+    channel_freq = hdr[2]
+    requestor = hdr[3]
+    scan_id = hdr[4]
+    vdev_id = hdr[5]
+
+    trace_seq.puts("\t\t\t\tWMI_SCAN_EVENTID event 0x%x reason %d channel_freq %d requestor %d scan_id %d vdev_id %d\n" %
+                   (event, reason, channel_freq, requestor, scan_id, vdev_id))
+
+    for (i, name) in wmi_scan_event_names:
+        if event == i:
+            trace_seq.puts("\t\t\t\t\t%s" % name)
+
+wmi_event_handlers = [
+    [0x9000, wmi_event_scan ],
+    ]
+
+def wmi_cmd_start_scan_handler(pevent, trace_seq, event, buf):
+    hdr = struct.unpack("<IIIIIIIIIIIIIII", buf[0:60])
+    scan_id = hdr[0]
+
+    trace_seq.puts("\t\t\t\tWMI_START_SCAN_CMDID scan_id %d\n" % (scan_id))
+
+wmi_cmd_handlers = [
+    [0x9000, wmi_cmd_start_scan_handler ],
+    ]
+
+def ath10k_wmi_cmd_handler(pevent, trace_seq, event):
+    buf_len = long(event['buf_len'])
+    buf = event['buf'].data
+
+    # parse wmi header
+    hdr = struct.unpack("<HH", buf[0:4])
+    buf = buf[4:]
+
+    cmd_id = hdr[0]
+
+    trace_seq.puts("id 0x%x len %d\n" % (cmd_id, buf_len))
+
+    for (wmi_id, handler) in wmi_cmd_handlers:
+        if wmi_id == cmd_id:
+            handler(pevent, trace_seq, event, buf)
+            break
+
+def ath10k_wmi_event_handler(pevent, trace_seq, event):
+    buf_len = long(event['buf_len'])
+    buf = event['buf'].data
+
+    hdr = struct.unpack("<HH", buf[0:4])
+    cmd_id = hdr[0]
+
+    trace_seq.puts("id 0x%x len %d\n" % (cmd_id, buf_len))
+
+    for (wmi_id, handler) in wmi_event_handlers:
+        if wmi_id == cmd_id:
+            handler(pevent, trace_seq, event, buf[4:])
+            break
+
+def ath10k_log_dbg_dump_handler(pevent, trace_seq, event):
+    msg = event['msg']
+    prefix = event['prefix']
+    buf_len = long(event['buf_len'])
+    buf = event['buf'].data
+
+    trace_seq.puts("%s\n" % (msg))
+    trace_seq.puts("%s\n" % hexdump(buf, prefix))
+
+def register(pevent):
+    pevent.register_event_handler("ath10k", "ath10k_wmi_cmd",
+                                  lambda *args:
+                                      ath10k_wmi_cmd_handler(pevent, *args))
+    pevent.register_event_handler("ath10k", "ath10k_wmi_event",
+                                  lambda *args:
+                                      ath10k_wmi_event_handler(pevent, *args))
+    pevent.register_event_handler("ath10k", "ath10k_log_dbg_dump",
+                                  lambda *args:
+                                      ath10k_log_dbg_dump_handler(pevent, *args))