platform/x86/amd: pmf: Add infrastructure for quirking supported funcs

In the event of a BIOS bug add infrastructure that will be utilized
to override the return value for supported_funcs to avoid enabling
features.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20240410140956.385-2-mario.limonciello@amd.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

1 files changed, 43 insertions, 0 deletions

diff --git a/drivers/platform/x86/amd/pmf/pmf-quirks.c b/drivers/platform/x86/amd/pmf/pmf-quirks.c
new file mode 100644
index 000000000000..9f3790eaaa30
--- /dev/null
+++ b/drivers/platform/x86/amd/pmf/pmf-quirks.c
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * AMD Platform Management Framework Driver Quirks
+ *
+ * Copyright (c) 2024, Advanced Micro Devices, Inc.
+ * All Rights Reserved.
+ *
+ * Author: Mario Limonciello <mario.limonciello@amd.com>
+ */
+
+#include <linux/dmi.h>
+
+#include "pmf.h"
+
+struct quirk_entry {
+	u32 supported_func;
+};
+
+static struct quirk_entry quirk_no_sps_bug = {
+	.supported_func = 0x4003,
+};
+
+static const struct dmi_system_id fwbug_list[] = {
+	{}
+};
+
+void amd_pmf_quirks_init(struct amd_pmf_dev *dev)
+{
+	const struct dmi_system_id *dmi_id;
+	struct quirk_entry *quirks;
+
+	dmi_id = dmi_first_match(fwbug_list);
+	if (!dmi_id)
+		return;
+
+	quirks = dmi_id->driver_data;
+	if (quirks->supported_func) {
+		dev->supported_func = quirks->supported_func;
+		pr_info("Using supported funcs quirk to avoid %s platform firmware bug\n",
+			dmi_id->ident);
+	}
+}
+