1 files changed, 0 insertions, 239 deletions
diff --git a/drivers/scsi/ufs/ufs-debugfs.c b/drivers/scsi/ufs/ufs-debugfs.c
deleted file mode 100644
index c10a8f09682b..000000000000
--- a/drivers/scsi/ufs/ufs-debugfs.c
+++ /dev/null
@@ -1,239 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2020 Intel Corporation
-
-#include <linux/debugfs.h>
-
-#include "ufs-debugfs.h"
-#include "ufshcd.h"
-#include "ufshcd-priv.h"
-
-static struct dentry *ufs_debugfs_root;
-
-struct ufs_debugfs_attr {
-	const char			*name;
-	mode_t				mode;
-	const struct file_operations	*fops;
-};
-
-/* @file corresponds to a debugfs attribute in directory hba->debugfs_root. */
-static inline struct ufs_hba *hba_from_file(const struct file *file)
-{
-	return d_inode(file->f_path.dentry->d_parent)->i_private;
-}
-
-void __init ufs_debugfs_init(void)
-{
-	ufs_debugfs_root = debugfs_create_dir("ufshcd", NULL);
-}
-
-void ufs_debugfs_exit(void)
-{
-	debugfs_remove_recursive(ufs_debugfs_root);
-}
-
-static int ufs_debugfs_stats_show(struct seq_file *s, void *data)
-{
-	struct ufs_hba *hba = hba_from_file(s->file);
-	struct ufs_event_hist *e = hba->ufs_stats.event;
-
-#define PRT(fmt, typ) \
-	seq_printf(s, fmt, e[UFS_EVT_ ## typ].cnt)
-
-	PRT("PHY Adapter Layer errors (except LINERESET): %llu\n", PA_ERR);
-	PRT("Data Link Layer errors: %llu\n", DL_ERR);
-	PRT("Network Layer errors: %llu\n", NL_ERR);
-	PRT("Transport Layer errors: %llu\n", TL_ERR);
-	PRT("Generic DME errors: %llu\n", DME_ERR);
-	PRT("Auto-hibernate errors: %llu\n", AUTO_HIBERN8_ERR);
-	PRT("IS Fatal errors (CEFES, SBFES, HCFES, DFES): %llu\n", FATAL_ERR);
-	PRT("DME Link Startup errors: %llu\n", LINK_STARTUP_FAIL);
-	PRT("PM Resume errors: %llu\n", RESUME_ERR);
-	PRT("PM Suspend errors : %llu\n", SUSPEND_ERR);
-	PRT("Logical Unit Resets: %llu\n", DEV_RESET);
-	PRT("Host Resets: %llu\n", HOST_RESET);
-	PRT("SCSI command aborts: %llu\n", ABORT);
-#undef PRT
-	return 0;
-}
-DEFINE_SHOW_ATTRIBUTE(ufs_debugfs_stats);
-
-static int ee_usr_mask_get(void *data, u64 *val)
-{
-	struct ufs_hba *hba = data;
-
-	*val = hba->ee_usr_mask;
-	return 0;
-}
-
-static int ufs_debugfs_get_user_access(struct ufs_hba *hba)
-__acquires(&hba->host_sem)
-{
-	down(&hba->host_sem);
-	if (!ufshcd_is_user_access_allowed(hba)) {
-		up(&hba->host_sem);
-		return -EBUSY;
-	}
-	ufshcd_rpm_get_sync(hba);
-	return 0;
-}
-
-static void ufs_debugfs_put_user_access(struct ufs_hba *hba)
-__releases(&hba->host_sem)
-{
-	ufshcd_rpm_put_sync(hba);
-	up(&hba->host_sem);
-}
-
-static int ee_usr_mask_set(void *data, u64 val)
-{
-	struct ufs_hba *hba = data;
-	int err;
-
-	if (val & ~(u64)MASK_EE_STATUS)
-		return -EINVAL;
-	err = ufs_debugfs_get_user_access(hba);
-	if (err)
-		return err;
-	err = ufshcd_update_ee_usr_mask(hba, val, MASK_EE_STATUS);
-	ufs_debugfs_put_user_access(hba);
-	return err;
-}
-
-DEFINE_DEBUGFS_ATTRIBUTE(ee_usr_mask_fops, ee_usr_mask_get, ee_usr_mask_set, "%#llx\n");
-
-void ufs_debugfs_exception_event(struct ufs_hba *hba, u16 status)
-{
-	bool chgd = false;
-	u16 ee_ctrl_mask;
-	int err = 0;
-
-	if (!hba->debugfs_ee_rate_limit_ms || !status)
-		return;
-
-	mutex_lock(&hba->ee_ctrl_mutex);
-	ee_ctrl_mask = hba->ee_drv_mask | (hba->ee_usr_mask & ~status);
-	chgd = ee_ctrl_mask != hba->ee_ctrl_mask;
-	if (chgd) {
-		err = __ufshcd_write_ee_control(hba, ee_ctrl_mask);
-		if (err)
-			dev_err(hba->dev, "%s: failed to write ee control %d\n",
-				__func__, err);
-	}
-	mutex_unlock(&hba->ee_ctrl_mutex);
-
-	if (chgd && !err) {
-		unsigned long delay = msecs_to_jiffies(hba->debugfs_ee_rate_limit_ms);
-
-		queue_delayed_work(system_freezable_wq, &hba->debugfs_ee_work, delay);
-	}
-}
-
-static void ufs_debugfs_restart_ee(struct work_struct *work)
-{
-	struct ufs_hba *hba = container_of(work, struct ufs_hba, debugfs_ee_work.work);
-
-	if (!hba->ee_usr_mask || pm_runtime_suspended(hba->dev) ||
-	    ufs_debugfs_get_user_access(hba))
-		return;
-	ufshcd_write_ee_control(hba);
-	ufs_debugfs_put_user_access(hba);
-}
-
-static int ufs_saved_err_show(struct seq_file *s, void *data)
-{
-	struct ufs_debugfs_attr *attr = s->private;
-	struct ufs_hba *hba = hba_from_file(s->file);
-	const int *p;
-
-	if (strcmp(attr->name, "saved_err") == 0) {
-		p = &hba->saved_err;
-	} else if (strcmp(attr->name, "saved_uic_err") == 0) {
-		p = &hba->saved_uic_err;
-	} else {
-		return -ENOENT;
-	}
-
-	seq_printf(s, "%d\n", *p);
-	return 0;
-}
-
-static ssize_t ufs_saved_err_write(struct file *file, const char __user *buf,
-				   size_t count, loff_t *ppos)
-{
-	struct ufs_debugfs_attr *attr = file->f_inode->i_private;
-	struct ufs_hba *hba = hba_from_file(file);
-	char val_str[16] = { };
-	int val, ret;
-
-	if (count > sizeof(val_str))
-		return -EINVAL;
-	if (copy_from_user(val_str, buf, count))
-		return -EFAULT;
-	ret = kstrtoint(val_str, 0, &val);
-	if (ret < 0)
-		return ret;
-
-	spin_lock_irq(hba->host->host_lock);
-	if (strcmp(attr->name, "saved_err") == 0) {
-		hba->saved_err = val;
-	} else if (strcmp(attr->name, "saved_uic_err") == 0) {
-		hba->saved_uic_err = val;
-	} else {
-		ret = -ENOENT;
-	}
-	if (ret == 0)
-		ufshcd_schedule_eh_work(hba);
-	spin_unlock_irq(hba->host->host_lock);
-
-	return ret < 0 ? ret : count;
-}
-
-static int ufs_saved_err_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, ufs_saved_err_show, inode->i_private);
-}
-
-static const struct file_operations ufs_saved_err_fops = {
-	.owner		= THIS_MODULE,
-	.open		= ufs_saved_err_open,
-	.read		= seq_read,
-	.write		= ufs_saved_err_write,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
-
-static const struct ufs_debugfs_attr ufs_attrs[] = {
-	{ "stats", 0400, &ufs_debugfs_stats_fops },
-	{ "saved_err", 0600, &ufs_saved_err_fops },
-	{ "saved_uic_err", 0600, &ufs_saved_err_fops },
-	{ }
-};
-
-void ufs_debugfs_hba_init(struct ufs_hba *hba)
-{
-	const struct ufs_debugfs_attr *attr;
-	struct dentry *root;
-
-	/* Set default exception event rate limit period to 20ms */
-	hba->debugfs_ee_rate_limit_ms = 20;
-	INIT_DELAYED_WORK(&hba->debugfs_ee_work, ufs_debugfs_restart_ee);
-
-	root = debugfs_create_dir(dev_name(hba->dev), ufs_debugfs_root);
-	if (IS_ERR_OR_NULL(root))
-		return;
-	hba->debugfs_root = root;
-	d_inode(root)->i_private = hba;
-	for (attr = ufs_attrs; attr->name; attr++)
-		debugfs_create_file(attr->name, attr->mode, root, (void *)attr,
-				    attr->fops);
-	debugfs_create_file("exception_event_mask", 0600, hba->debugfs_root,
-			    hba, &ee_usr_mask_fops);
-	debugfs_create_u32("exception_event_rate_limit_ms", 0600, hba->debugfs_root,
-			   &hba->debugfs_ee_rate_limit_ms);
-}
-
-void ufs_debugfs_hba_exit(struct ufs_hba *hba)
-{
-	debugfs_remove_recursive(hba->debugfs_root);
-	cancel_delayed_work_sync(&hba->debugfs_ee_work);
-}