Merge "[Feature][task-view-1335]Add command to query EMMC health status"
diff --git a/cap/zx297520v3/zxic_code/zxic_source/linux-5.10/drivers/mmc/core/block.c b/cap/zx297520v3/zxic_code/zxic_source/linux-5.10/drivers/mmc/core/block.c
old mode 100644
new mode 100755
index 6622e32..af57016
--- a/cap/zx297520v3/zxic_code/zxic_source/linux-5.10/drivers/mmc/core/block.c
+++ b/cap/zx297520v3/zxic_code/zxic_source/linux-5.10/drivers/mmc/core/block.c
@@ -132,6 +132,9 @@
 	/* debugfs files (only in main mmc_blk_data) */
 	struct dentry *status_dentry;
 	struct dentry *ext_csd_dentry;
+//cz.li@20250420 for emmc health begin
+	struct dentry *health_dentry;
+//cz.li@20250420 for emmc health begin
 };
 
 /* Device type for RPMB character devices */
@@ -1042,6 +1045,12 @@
 		ext_csd = mq_rq->drv_op_data;
 		ret = mmc_get_ext_csd(card, ext_csd);
 		break;
+//cz.li@20250420 for emmc health begin
+	case MMC_DRV_OP_GET_HEALTH:
+		ext_csd = mq_rq->drv_op_data;
+		ret = mmc_get_ext_csd(card, ext_csd);
+		break;
+//cz.li@20250420 for emmc health end 
 	default:
 		pr_err("%s: unknown driver specific operation\n",
 		       md->disk->disk_name);
@@ -2837,6 +2846,92 @@
 	.llseek		= default_llseek,
 };
 
+//cz.li@20250420 for emmc health begin
+#define HEALTH_STR_LEN 2
+static int mmc_health_open(struct inode *inode, struct file *filp)
+{
+	struct mmc_card *card = inode->i_private;
+	struct mmc_blk_data *md = dev_get_drvdata(&card->dev);
+	struct mmc_queue *mq = &md->queue;
+	struct request *req;
+	char *buf;
+	u8 *ext_csd = NULL;
+	int err;
+	ssize_t n;
+	unsigned int health;
+	char health_buf[64];
+	//printk("cy-health open\n");
+	buf = kmalloc(EXT_CSD_STR_LEN + 1, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+	
+	/* Ask the block layer for the EXT CSD */
+	req = blk_get_request(mq->queue, REQ_OP_DRV_IN, 0);
+	if (IS_ERR(req)) {
+		err = PTR_ERR(req);
+		goto out_free;
+	}
+	req_to_mmc_queue_req(req)->drv_op = MMC_DRV_OP_GET_HEALTH;
+	req_to_mmc_queue_req(req)->drv_op_data = &ext_csd;
+	//printk("cy- blk_execute_rq begin\n");
+	blk_execute_rq(mq->queue, NULL, req, 0);
+	//printk("cy- blk_execute_rq end\n");
+	err = req_to_mmc_queue_req(req)->drv_op_result;
+	//printk("cy-blk_put_request begin\n");
+	blk_put_request(req);
+	//printk("cy-blk_put_request end\n");
+	if (ext_csd == NULL) {
+		printk("EXT_CSD IF NULL\n");
+		goto out_free;
+	}
+	if (err) {
+		pr_err("FAILED %d\n", err);
+		if (ext_csd != NULL)
+			kfree(ext_csd);
+		goto out_free;
+	}
+	
+	health = ext_csd[269];
+	//printk("cy-bad health %d\n",ext_csd[269]);
+	n = sprintf(buf, "%02x", health);
+	if (n != HEALTH_STR_LEN) {
+		//printk("cy-bad count %d , %d\n", (int)n , HEALTH_STR_LEN);
+		err = -EINVAL;
+		kfree(ext_csd);
+		goto out_free;
+	}
+
+	filp->private_data = buf;
+	kfree(ext_csd);
+	return 0;
+out_free:
+	kfree(buf);
+	return err;
+}
+
+static ssize_t mmc_health_read(struct file *filp, char __user *ubuf,
+                                size_t cnt, loff_t *ppos)
+{
+	char *buf = filp->private_data;
+	printk("cy-mmc_ext_csd_read\n");
+	return simple_read_from_buffer(ubuf, cnt, ppos,
+                                       buf, HEALTH_STR_LEN);
+}
+
+static int mmc_health_release(struct inode *inode, struct file *file)
+{
+	kfree(file->private_data);
+	return 0;
+}
+
+static const struct file_operations mmc_dbg_health_fops = {
+	.open		= mmc_health_open,
+	.read		= mmc_health_read,
+	.release	= mmc_health_release,
+	.llseek		= default_llseek,
+};
+//cz.li@20250420 for emmc health end
+
 static int mmc_blk_add_debugfs(struct mmc_card *card, struct mmc_blk_data *md)
 {
 	struct dentry *root;
@@ -2862,7 +2957,13 @@
 		if (!md->ext_csd_dentry)
 			return -EIO;
 	}
-
+//cz.li@20250420 for emmc health begin
+	if (mmc_card_mmc(card)) {
+		md->health_dentry=
+			debugfs_create_file("health", S_IRUSR, root, card,
+					    &mmc_dbg_health_fops);
+	}
+//cz.li@20250420 for emmc health end
 	return 0;
 }
 
@@ -2881,6 +2982,13 @@
 		debugfs_remove(md->ext_csd_dentry);
 		md->ext_csd_dentry = NULL;
 	}
+
+//cz.li@20250420 for emmc health begin
+	if (!IS_ERR_OR_NULL(md->health_dentry)) {
+		debugfs_remove(md->health_dentry);
+		md->health_dentry= NULL;
+	}
+//cz.li@20250420 for emmc health end
 }
 
 #else
diff --git a/cap/zx297520v3/zxic_code/zxic_source/linux-5.10/drivers/mmc/core/queue.h b/cap/zx297520v3/zxic_code/zxic_source/linux-5.10/drivers/mmc/core/queue.h
old mode 100644
new mode 100755
index fd11491..6713585
--- a/cap/zx297520v3/zxic_code/zxic_source/linux-5.10/drivers/mmc/core/queue.h
+++ b/cap/zx297520v3/zxic_code/zxic_source/linux-5.10/drivers/mmc/core/queue.h
@@ -59,6 +59,9 @@
 	MMC_DRV_OP_BOOT_WP,
 	MMC_DRV_OP_GET_CARD_STATUS,
 	MMC_DRV_OP_GET_EXT_CSD,
+//cz.li@20250420 for emmc health begin
+	MMC_DRV_OP_GET_HEALTH,
+//cz.li@20250420 for emmc health end
 };
 
 struct mmc_queue_req {