From 59283959e82bd272a5e15e4ed5274cdd059fb532 Mon Sep 17 00:00:00 2001
From: Karol Trzcinski <karolx.trzcinski@linux.intel.com>
Date: Tue, 17 Dec 2019 18:26:11 -0600
Subject: [PATCH] ASoC: SOF: log compiler name and version information
Git-commit: 59283959e82bd272a5e15e4ed5274cdd059fb532
Patch-mainline: v5.6-rc1
References: jsc#SLE-16518

Log information about used compilator and optimization level
in sof firmware to host system.
It will be helful to catch some compiler dependent bugs.

Signed-off-by: Karol Trzcinski <karolx.trzcinski@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191218002616.7652-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 sound/soc/sof/loader.c   | 39 +++++++++++++++++++++++++++++++++++++++
 sound/soc/sof/sof-priv.h |  1 +
 2 files changed, 40 insertions(+)

diff --git a/sound/soc/sof/loader.c b/sound/soc/sof/loader.c
index 31847aa3975d..235be4fc0862 100644
--- a/sound/soc/sof/loader.c
+++ b/sound/soc/sof/loader.c
@@ -32,6 +32,42 @@ static int get_ext_windows(struct snd_sof_dev *sdev,
 	return 0;
 }
 
+static int get_cc_info(struct snd_sof_dev *sdev,
+		       struct sof_ipc_ext_data_hdr *ext_hdr)
+{
+	int ret;
+
+	struct sof_ipc_cc_version *cc =
+		container_of(ext_hdr, struct sof_ipc_cc_version, ext_hdr);
+
+	dev_dbg(sdev->dev, "Firmware info: used compiler %s %d:%d:%d%s used optimization flags %s\n",
+		cc->name, cc->major, cc->minor, cc->micro, cc->desc,
+		cc->optim);
+
+	/* create read-only cc_version debugfs to store compiler version info */
+	/* use local copy of the cc_version to prevent data corruption */
+	if (sdev->first_boot) {
+		sdev->cc_version = devm_kmalloc(sdev->dev, cc->ext_hdr.hdr.size,
+						GFP_KERNEL);
+
+		if (!sdev->cc_version)
+			return -ENOMEM;
+
+		memcpy(sdev->cc_version, cc, cc->ext_hdr.hdr.size);
+		ret = snd_sof_debugfs_buf_item(sdev, sdev->cc_version,
+					       cc->ext_hdr.hdr.size,
+					       "cc_version", 0444);
+
+		/* errors are only due to memory allocation, not debugfs */
+		if (ret < 0) {
+			dev_err(sdev->dev, "error: snd_sof_debugfs_buf_item failed\n");
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
 /* parse the extended FW boot data structures from FW boot message */
 int snd_sof_fw_parse_ext_data(struct snd_sof_dev *sdev, u32 bar, u32 offset)
 {
@@ -65,6 +101,9 @@ int snd_sof_fw_parse_ext_data(struct snd_sof_dev *sdev, u32 bar, u32 offset)
 		case SOF_IPC_EXT_WINDOW:
 			ret = get_ext_windows(sdev, ext_hdr);
 			break;
+		case SOF_IPC_EXT_CC_INFO:
+			ret = get_cc_info(sdev, ext_hdr);
+			break;
 		default:
 			dev_warn(sdev->dev, "warning: unknown ext header type %d size 0x%x\n",
 				 ext_hdr->type, ext_hdr->hdr.size);
diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h
index 220b35141c34..3f1e1eb7c55f 100644
--- a/sound/soc/sof/sof-priv.h
+++ b/sound/soc/sof/sof-priv.h
@@ -361,6 +361,7 @@ struct snd_sof_dev {
 	struct snd_dma_buffer dmab_bdl;
 	struct sof_ipc_fw_ready fw_ready;
 	struct sof_ipc_fw_version fw_version;
+	struct sof_ipc_cc_version *cc_version;
 
 	/* topology */
 	struct snd_soc_tplg_ops *tplg_ops;
-- 
2.16.4