cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

fsl_ssi_dbg.c (2874B)

      1// SPDX-License-Identifier: GPL-2.0
      2//
      3// Freescale SSI ALSA SoC Digital Audio Interface (DAI) debugging functions
      4//
      5// Copyright 2014 Markus Pargmann <mpa@pengutronix.de>, Pengutronix
      6//
      7// Split from fsl_ssi.c
      8
      9#include <linux/debugfs.h>
     10#include <linux/device.h>
     11#include <linux/kernel.h>
     12
     13#include "fsl_ssi.h"
     14
     15void fsl_ssi_dbg_isr(struct fsl_ssi_dbg *dbg, u32 sisr)
     16{
     17	if (sisr & SSI_SISR_RFRC)
     18		dbg->stats.rfrc++;
     19
     20	if (sisr & SSI_SISR_TFRC)
     21		dbg->stats.tfrc++;
     22
     23	if (sisr & SSI_SISR_CMDAU)
     24		dbg->stats.cmdau++;
     25
     26	if (sisr & SSI_SISR_CMDDU)
     27		dbg->stats.cmddu++;
     28
     29	if (sisr & SSI_SISR_RXT)
     30		dbg->stats.rxt++;
     31
     32	if (sisr & SSI_SISR_RDR1)
     33		dbg->stats.rdr1++;
     34
     35	if (sisr & SSI_SISR_RDR0)
     36		dbg->stats.rdr0++;
     37
     38	if (sisr & SSI_SISR_TDE1)
     39		dbg->stats.tde1++;
     40
     41	if (sisr & SSI_SISR_TDE0)
     42		dbg->stats.tde0++;
     43
     44	if (sisr & SSI_SISR_ROE1)
     45		dbg->stats.roe1++;
     46
     47	if (sisr & SSI_SISR_ROE0)
     48		dbg->stats.roe0++;
     49
     50	if (sisr & SSI_SISR_TUE1)
     51		dbg->stats.tue1++;
     52
     53	if (sisr & SSI_SISR_TUE0)
     54		dbg->stats.tue0++;
     55
     56	if (sisr & SSI_SISR_TFS)
     57		dbg->stats.tfs++;
     58
     59	if (sisr & SSI_SISR_RFS)
     60		dbg->stats.rfs++;
     61
     62	if (sisr & SSI_SISR_TLS)
     63		dbg->stats.tls++;
     64
     65	if (sisr & SSI_SISR_RLS)
     66		dbg->stats.rls++;
     67
     68	if (sisr & SSI_SISR_RFF1)
     69		dbg->stats.rff1++;
     70
     71	if (sisr & SSI_SISR_RFF0)
     72		dbg->stats.rff0++;
     73
     74	if (sisr & SSI_SISR_TFE1)
     75		dbg->stats.tfe1++;
     76
     77	if (sisr & SSI_SISR_TFE0)
     78		dbg->stats.tfe0++;
     79}
     80
     81/*
     82 * Show the statistics of a flag only if its interrupt is enabled
     83 *
     84 * Compilers will optimize it to a no-op if the interrupt is disabled
     85 */
     86#define SIER_SHOW(flag, name) \
     87	do { \
     88		if (SSI_SIER_##flag) \
     89			seq_printf(s, #name "=%u\n", ssi_dbg->stats.name); \
     90	} while (0)
     91
     92
     93/*
     94 * Display the statistics for the current SSI device
     95 *
     96 * To avoid confusion, only show those counts that are enabled
     97 */
     98static int fsl_ssi_stats_show(struct seq_file *s, void *unused)
     99{
    100	struct fsl_ssi_dbg *ssi_dbg = s->private;
    101
    102	SIER_SHOW(RFRC_EN, rfrc);
    103	SIER_SHOW(TFRC_EN, tfrc);
    104	SIER_SHOW(CMDAU_EN, cmdau);
    105	SIER_SHOW(CMDDU_EN, cmddu);
    106	SIER_SHOW(RXT_EN, rxt);
    107	SIER_SHOW(RDR1_EN, rdr1);
    108	SIER_SHOW(RDR0_EN, rdr0);
    109	SIER_SHOW(TDE1_EN, tde1);
    110	SIER_SHOW(TDE0_EN, tde0);
    111	SIER_SHOW(ROE1_EN, roe1);
    112	SIER_SHOW(ROE0_EN, roe0);
    113	SIER_SHOW(TUE1_EN, tue1);
    114	SIER_SHOW(TUE0_EN, tue0);
    115	SIER_SHOW(TFS_EN, tfs);
    116	SIER_SHOW(RFS_EN, rfs);
    117	SIER_SHOW(TLS_EN, tls);
    118	SIER_SHOW(RLS_EN, rls);
    119	SIER_SHOW(RFF1_EN, rff1);
    120	SIER_SHOW(RFF0_EN, rff0);
    121	SIER_SHOW(TFE1_EN, tfe1);
    122	SIER_SHOW(TFE0_EN, tfe0);
    123
    124	return 0;
    125}
    126
    127DEFINE_SHOW_ATTRIBUTE(fsl_ssi_stats);
    128
    129void fsl_ssi_debugfs_create(struct fsl_ssi_dbg *ssi_dbg, struct device *dev)
    130{
    131	ssi_dbg->dbg_dir = debugfs_create_dir(dev_name(dev), NULL);
    132
    133	debugfs_create_file("stats", 0444, ssi_dbg->dbg_dir, ssi_dbg,
    134			    &fsl_ssi_stats_fops);
    135}
    136
    137void fsl_ssi_debugfs_remove(struct fsl_ssi_dbg *ssi_dbg)
    138{
    139	debugfs_remove_recursive(ssi_dbg->dbg_dir);
    140}