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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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ath9k: Add a debugfs file to show interrupt statistics
Location: ath9k/<phy>/interrupt Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith
John W. Linville
parent
3706de6f58
commit
817e11de2d
@ -88,16 +88,66 @@ enum ATH_DEBUG {
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#ifdef CONFIG_ATH9K_DEBUG
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/**
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* struct ath_interrupt_stats - Contains statistics about interrupts
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* @total: Total no. of interrupts generated so far
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* @rxok: RX with no errors
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* @rxeol: RX with no more RXDESC available
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* @rxorn: RX FIFO overrun
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* @txok: TX completed at the requested rate
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* @txurn: TX FIFO underrun
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* @mib: MIB regs reaching its threshold
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* @rxphyerr: RX with phy errors
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* @rx_keycache_miss: RX with key cache misses
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* @swba: Software Beacon Alert
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* @bmiss: Beacon Miss
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* @bnr: Beacon Not Ready
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* @cst: Carrier Sense TImeout
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* @gtt: Global TX Timeout
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* @tim: RX beacon TIM occurrence
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* @cabend: RX End of CAB traffic
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* @dtimsync: DTIM sync lossage
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* @dtim: RX Beacon with DTIM
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*/
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struct ath_interrupt_stats {
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u32 total;
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u32 rxok;
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u32 rxeol;
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u32 rxorn;
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u32 txok;
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u32 txeol;
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u32 txurn;
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u32 mib;
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u32 rxphyerr;
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u32 rx_keycache_miss;
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u32 swba;
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u32 bmiss;
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u32 bnr;
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u32 cst;
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u32 gtt;
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u32 tim;
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u32 cabend;
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u32 dtimsync;
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u32 dtim;
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};
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struct ath_stats {
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struct ath_interrupt_stats istats;
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};
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struct ath9k_debug {
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int debug_mask;
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struct dentry *debugfs_root;
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struct dentry *debugfs_phy;
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struct dentry *debugfs_dma;
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struct dentry *debugfs_interrupt;
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struct ath_stats stats;
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};
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void DPRINTF(struct ath_softc *sc, int dbg_mask, const char *fmt, ...);
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int ath9k_init_debug(struct ath_softc *sc);
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void ath9k_exit_debug(struct ath_softc *sc);
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void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status);
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#else
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@ -115,6 +165,11 @@ static inline void ath9k_exit_debug(struct ath_softc *sc)
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{
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}
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static inline void ath_debug_stat_interrupt(struct ath_softc *sc,
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enum ath9k_int status)
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{
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}
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#endif /* CONFIG_ATH9K_DEBUG */
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struct ath_config {
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@ -128,6 +128,100 @@ static const struct file_operations fops_dma = {
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.owner = THIS_MODULE
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};
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void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status)
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{
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if (status)
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sc->sc_debug.stats.istats.total++;
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if (status & ATH9K_INT_RX)
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sc->sc_debug.stats.istats.rxok++;
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if (status & ATH9K_INT_RXEOL)
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sc->sc_debug.stats.istats.rxeol++;
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if (status & ATH9K_INT_RXORN)
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sc->sc_debug.stats.istats.rxorn++;
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if (status & ATH9K_INT_TX)
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sc->sc_debug.stats.istats.txok++;
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if (status & ATH9K_INT_TXURN)
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sc->sc_debug.stats.istats.txurn++;
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if (status & ATH9K_INT_MIB)
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sc->sc_debug.stats.istats.mib++;
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if (status & ATH9K_INT_RXPHY)
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sc->sc_debug.stats.istats.rxphyerr++;
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if (status & ATH9K_INT_RXKCM)
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sc->sc_debug.stats.istats.rx_keycache_miss++;
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if (status & ATH9K_INT_SWBA)
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sc->sc_debug.stats.istats.swba++;
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if (status & ATH9K_INT_BMISS)
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sc->sc_debug.stats.istats.bmiss++;
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if (status & ATH9K_INT_BNR)
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sc->sc_debug.stats.istats.bnr++;
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if (status & ATH9K_INT_CST)
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sc->sc_debug.stats.istats.cst++;
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if (status & ATH9K_INT_GTT)
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sc->sc_debug.stats.istats.gtt++;
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if (status & ATH9K_INT_TIM)
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sc->sc_debug.stats.istats.tim++;
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if (status & ATH9K_INT_CABEND)
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sc->sc_debug.stats.istats.cabend++;
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if (status & ATH9K_INT_DTIMSYNC)
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sc->sc_debug.stats.istats.dtimsync++;
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if (status & ATH9K_INT_DTIM)
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sc->sc_debug.stats.istats.dtim++;
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}
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static ssize_t read_file_interrupt(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ath_softc *sc = file->private_data;
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char buf[512];
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unsigned int len = 0;
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "RX", sc->sc_debug.stats.istats.rxok);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "RXEOL", sc->sc_debug.stats.istats.rxeol);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "RXORN", sc->sc_debug.stats.istats.rxorn);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "TX", sc->sc_debug.stats.istats.txok);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "TXURN", sc->sc_debug.stats.istats.txurn);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "MIB", sc->sc_debug.stats.istats.mib);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "RXPHY", sc->sc_debug.stats.istats.rxphyerr);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "RXKCM", sc->sc_debug.stats.istats.rx_keycache_miss);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "SWBA", sc->sc_debug.stats.istats.swba);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "BMISS", sc->sc_debug.stats.istats.bmiss);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "BNR", sc->sc_debug.stats.istats.bnr);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "CST", sc->sc_debug.stats.istats.cst);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "GTT", sc->sc_debug.stats.istats.gtt);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "TIM", sc->sc_debug.stats.istats.tim);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "CABEND", sc->sc_debug.stats.istats.cabend);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "DTIMSYNC", sc->sc_debug.stats.istats.dtimsync);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "DTIM", sc->sc_debug.stats.istats.dtim);
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len += snprintf(buf + len, sizeof(buf) - len,
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"%8s: %10u\n", "TOTAL", sc->sc_debug.stats.istats.total);
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return simple_read_from_buffer(user_buf, count, ppos, buf, len);
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}
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static const struct file_operations fops_interrupt = {
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.read = read_file_interrupt,
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.open = ath9k_debugfs_open,
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.owner = THIS_MODULE
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};
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int ath9k_init_debug(struct ath_softc *sc)
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{
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sc->sc_debug.debug_mask = ath9k_debug;
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@ -146,6 +240,13 @@ int ath9k_init_debug(struct ath_softc *sc)
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if (!sc->sc_debug.debugfs_dma)
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goto err;
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sc->sc_debug.debugfs_interrupt = debugfs_create_file("interrupt",
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S_IRUGO,
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sc->sc_debug.debugfs_phy,
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sc, &fops_interrupt);
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if (!sc->sc_debug.debugfs_interrupt)
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goto err;
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return 0;
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err:
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ath9k_exit_debug(sc);
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@ -154,6 +255,7 @@ int ath9k_init_debug(struct ath_softc *sc)
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void ath9k_exit_debug(struct ath_softc *sc)
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{
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debugfs_remove(sc->sc_debug.debugfs_interrupt);
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debugfs_remove(sc->sc_debug.debugfs_dma);
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debugfs_remove(sc->sc_debug.debugfs_phy);
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debugfs_remove(sc->sc_debug.debugfs_root);
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@ -598,6 +598,8 @@ static irqreturn_t ath_isr(int irq, void *dev)
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}
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} while (0);
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ath_debug_stat_interrupt(sc, status);
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if (sched) {
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/* turn off every interrupt except SWBA */
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ath9k_hw_set_interrupts(ah, (sc->sc_imask & ATH9K_INT_SWBA));
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