linux-kernel - [PATCH v4 13/14] mei: debugfs: add pxp mode to devstate in debugfs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20220629112913.1210933-14-alexander.usyskin@intel.com>
Date:   Wed, 29 Jun 2022 14:29:12 +0300
From:   Alexander Usyskin <alexander.usyskin@...el.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>
Cc:     Tomas Winkler <tomas.winkler@...el.com>,
        Alexander Usyskin <alexander.usyskin@...el.com>,
        Vitaly Lubart <vitaly.lubart@...el.com>,
        intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4 13/14] mei: debugfs: add pxp mode to devstate in debugfs

From: Tomas Winkler <tomas.winkler@...el.com>

Add pxp mode devstate to debugfs to monitor
pxp state machine progress. During debug
it is important to understand in what state
the pxp handshake is.

CC: Vitaly Lubart <vitaly.lubart@...el.com>
Signed-off-by: Tomas Winkler <tomas.winkler@...el.com>
---
 drivers/misc/mei/debugfs.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/misc/mei/debugfs.c b/drivers/misc/mei/debugfs.c
index 1ce61e9e24fc..4074fec866a6 100644
--- a/drivers/misc/mei/debugfs.c
+++ b/drivers/misc/mei/debugfs.c
@@ -86,6 +86,20 @@ static int mei_dbgfs_active_show(struct seq_file *m, void *unused)
 }
 DEFINE_SHOW_ATTRIBUTE(mei_dbgfs_active);
 
+static const char *mei_dev_pxp_mode_str(enum mei_dev_pxp_mode state)
+{
+#define MEI_PXP_MODE(state) case MEI_DEV_PXP_##state: return #state
+	switch (state) {
+	MEI_PXP_MODE(DEFAULT);
+	MEI_PXP_MODE(INIT);
+	MEI_PXP_MODE(SETUP);
+	MEI_PXP_MODE(READY);
+	default:
+		return "unknown";
+	}
+#undef MEI_PXP_MODE
+}
+
 static int mei_dbgfs_devstate_show(struct seq_file *m, void *unused)
 {
 	struct mei_device *dev = m->private;
@@ -112,6 +126,9 @@ static int mei_dbgfs_devstate_show(struct seq_file *m, void *unused)
 	seq_printf(m, "pg:  %s, %s\n",
 		   mei_pg_is_enabled(dev) ? "ENABLED" : "DISABLED",
 		   mei_pg_state_str(mei_pg_state(dev)));
+
+	seq_printf(m, "pxp: %s\n", mei_dev_pxp_mode_str(dev->pxp_mode));
+
 	return 0;
 }
 DEFINE_SHOW_ATTRIBUTE(mei_dbgfs_devstate);
-- 
2.34.1