switch: added ignore_hpd quirk for bad csi boards

kvmd/apps/__init__.py

@@ -508,6 +508,7 @@ def _get_config_scheme() -> dict:
             "switch": {
                 "device":            Option("/dev/kvmd-switch", type=valid_abs_path, unpack_as="device_path"),
                 "default_edid":      Option("/etc/kvmd/switch-edid.hex", type=valid_abs_path, unpack_as="default_edid_path"),
+                "ignore_hpd_on_top": Option(False, type=valid_bool),
             },
         },
 

kvmd/apps/kvmd/switch/__init__.py

@@ -84,11 +84,12 @@ class Switch:  # pylint: disable=too-many-public-methods
         device_path: str,
         default_edid_path: str,
         pst_unix_path: str,
+        ignore_hpd_on_top: bool,
     ) -> None:
 
         self.__default_edid_path = default_edid_path
 
-        self.__chain = Chain(device_path)
+        self.__chain = Chain(device_path, ignore_hpd_on_top)
         self.__cache = StateCache()
         self.__storage = Storage(pst_unix_path)
 

kvmd/apps/kvmd/switch/chain.py

@@ -177,8 +177,14 @@ class UnitAtxLedsEvent(BaseEvent):
 
 # =====
 class Chain:  # pylint: disable=too-many-instance-attributes
-    def __init__(self, device_path: str) -> None:
+    def __init__(
+        self,
+        device_path: str,
+        ignore_hpd_on_top: bool,
+    ) -> None:
+
         self.__device = Device(device_path)
+        self.__ignore_hpd_on_top = ignore_hpd_on_top
 
         self.__actual = False
 
@@ -293,6 +299,7 @@ class Chain:  # pylint: disable=too-many-instance-attributes
             if self.__select():
                 for resp in self.__device.read_all():
                     self.__update_units(resp)
+                    self.__adjust_quirks()
                     self.__adjust_start_port()
                     self.__finish_changing_request(resp)
                 self.__consume_commands()
@@ -364,6 +371,15 @@ class Chain:  # pylint: disable=too-many-instance-attributes
                 self.__units[resp.header.unit].atx_leds = resp.body
                 self.__queue_event(UnitAtxLedsEvent(resp.header.unit, resp.body))
 
+    def __adjust_quirks(self) -> None:
+        for (unit, ctx) in enumerate(self.__units):
+            if ctx.state is not None and (ctx.state.version.sw_dev or ctx.state.version.sw >= 7):
+                ignore_hpd = (unit == 0 and self.__ignore_hpd_on_top)
+                if ctx.state.quirks.ignore_hpd != ignore_hpd:
+                    get_logger().info("Applying quirk ignore_hpd=%s to [%d] ...",
+                                      ignore_hpd, unit)
+                    self.__device.request_set_quirks(unit, ignore_hpd)
+
     def __adjust_start_port(self) -> None:
         if self.__active_port < 0:
             for (unit, ctx) in enumerate(self.__units):

kvmd/apps/kvmd/switch/device.py

@@ -42,6 +42,7 @@ from .proto import BodyAtxClick
 from .proto import BodySetEdid
 from .proto import BodyClearEdid
 from .proto import BodySetColors
+from .proto import BodySetQuirks
 
 
 # =====
@@ -166,6 +167,9 @@ class Device:
     def request_set_colors(self, unit: int, ch: int, colors: Colors) -> int:
         return self.__send_request(Header.SET_COLORS, unit, BodySetColors(ch, colors))
 
+    def request_set_quirks(self, unit: int, ignore_hpd: bool) -> int:
+        return self.__send_request(Header.SET_QUIRKS, unit, BodySetQuirks(ignore_hpd))
+
     def __send_request(self, op: int, unit: int, body: (Packable | None)) -> int:
         assert self.__tty is not None
         req = Request(Header(

kvmd/apps/kvmd/switch/proto.py

@@ -60,6 +60,7 @@ class Header(Packable, Unpackable):
     SET_EDID   = 9
     CLEAR_EDID = 10
     SET_COLORS = 12
+    SET_QUIRKS = 13
 
     __struct = struct.Struct("<BHBB")
 
@@ -89,6 +90,13 @@ class Nak(Unpackable):
         return Nak(*cls.__struct.unpack_from(data, offset=offset))
 
 
+@dataclasses.dataclass(frozen=True)
+class UnitVersion:
+    hw:     int
+    sw:     int
+    sw_dev: bool
+
+
 @dataclasses.dataclass(frozen=True)
 class UnitFlags:
     changing_busy: bool
@@ -97,10 +105,14 @@ class UnitFlags:
     has_hpd:       bool
 
 
+@dataclasses.dataclass(frozen=True)
+class UnitQuirks:
+    ignore_hpd: bool
+
+
 @dataclasses.dataclass(frozen=True)
 class UnitState(Unpackable):  # pylint: disable=too-many-instance-attributes
-    sw_version:    int
-    hw_version:    int
+    version:       UnitVersion
     flags:         UnitFlags
     ch:            int
     beacons:       tuple[bool, bool, bool, bool, bool, bool]
@@ -111,8 +123,9 @@ class UnitState(Unpackable):  # pylint: disable=too-many-instance-attributes
     video_crc:     tuple[int,  int,  int,  int]
     usb_5v_sens:   tuple[bool, bool, bool, bool]
     atx_busy:      tuple[bool, bool, bool, bool]
+    quirks:        UnitQuirks
 
-    __struct = struct.Struct("<HHHBBHHHHHHBBBHHHHBxB30x")
+    __struct = struct.Struct("<HHHBBHHHHHHBBBHHHHBxBB29x")
 
     def compare_edid(self, ch: int, edid: Optional["Edid"]) -> bool:
         if edid is None:
@@ -129,11 +142,14 @@ class UnitState(Unpackable):  # pylint: disable=too-many-instance-attributes
             sw_version, hw_version, flags, ch,
             beacons, nc0, nc1, nc2, nc3, nc4, nc5,
             video_5v_sens, video_hpd, video_edid, vc0, vc1, vc2, vc3,
-            usb_5v_sens, atx_busy,
+            usb_5v_sens, atx_busy, quirks,
         ) = cls.__struct.unpack_from(data, offset=offset)
         return UnitState(
-            sw_version,
-            hw_version,
+            version=UnitVersion(
+                hw=hw_version,
+                sw=(sw_version & 0x7FFF),
+                sw_dev=bool(sw_version & 0x8000),
+            ),
             flags=UnitFlags(
                 changing_busy=bool(flags & 0x80),
                 flashing_busy=bool(flags & 0x40),
@@ -149,6 +165,7 @@ class UnitState(Unpackable):  # pylint: disable=too-many-instance-attributes
             video_crc=(vc0, vc1, vc2, vc3),
             usb_5v_sens=cls.__make_flags4(usb_5v_sens),
             atx_busy=cls.__make_flags4(atx_busy),
+            quirks=UnitQuirks(ignore_hpd=bool(quirks & 0x01)),
         )
 
     @classmethod
@@ -265,6 +282,14 @@ class BodySetColors(Packable):
         return self.ch.to_bytes() + self.colors.pack()
 
 
+@dataclasses.dataclass(frozen=True)
+class BodySetQuirks(Packable):
+    ignore_hpd: bool
+
+    def pack(self) -> bytes:
+        return self.ignore_hpd.to_bytes()
+
+
 # =====
 @dataclasses.dataclass(frozen=True)
 class Request:

kvmd/apps/kvmd/switch/state.py

@@ -49,7 +49,7 @@ class _UnitInfo:
 
 # =====
 class StateCache:  # pylint: disable=too-many-instance-attributes
-    __FW_VERSION = 6
+    __FW_VERSION = 7
 
     __FULL    = 0xFFFF
     __SUMMARY = 0x01
@@ -195,7 +195,10 @@ class StateCache:  # pylint: disable=too-many-instance-attributes
             assert ui.state is not None
             assert ui.atx_leds is not None
             if x_model:
-                state["model"]["units"].append({"firmware": {"version": ui.state.sw_version}})
+                state["model"]["units"].append({"firmware": {
+                    "version":  ui.state.version.sw,
+                    "devbuild": ui.state.version.sw_dev,
+                }})
             if x_video:
                 state["video"]["links"].extend(ui.state.video_5v_sens[:4])
             if x_usb:

web/share/js/kvm/switch.js

@@ -408,7 +408,8 @@ export function Switch() {
 		$("switch-chain").innerHTML = content;
 
 		if (model.units.length > 0) {
-			tools.hidden.setVisible($("switch-message-update"), (model.firmware.version > model.units[0].firmware.version));
+			let fw = model.units[0].firmware;
+			tools.hidden.setVisible($("switch-message-update"), (fw.devbuild || fw.version < model.firmware.version));
 		}
 
 		for (let unit = 0; unit < model.units.length; ++unit) {