ath9k: Dump modal noisefloor calibration history (d069a46b) · Commits · 戴 / test

drivers/net/wireless/ath/ath9k/debug.c

+55 −0

Original line number	Diff line number	Diff line
		@@ -1163,6 +1163,59 @@ static const struct file_operations fops_regdump = {
		.llseek = default_llseek,/* read accesses f_pos */
		};

		static ssize_t read_file_dump_nfcal(struct file file, char __user user_buf,
		size_t count, loff_t *ppos)
		{
		struct ath_softc *sc = file->private_data;
		struct ath_hw *ah = sc->sc_ah;
		struct ath9k_nfcal_hist *h = sc->caldata.nfCalHist;
		struct ath_common *common = ath9k_hw_common(ah);
		struct ieee80211_conf *conf = &common->hw->conf;
		u32 len = 0, size = 1500;
		u32 i, j;
		ssize_t retval = 0;
		char *buf;
		u8 chainmask = (ah->rxchainmask << 3) \| ah->rxchainmask;
		u8 nread;

		buf = kzalloc(size, GFP_KERNEL);
		if (!buf)
		return -ENOMEM;

		len += snprintf(buf + len, size - len,
		"Channel Noise Floor : %d\n", ah->noise);
		len += snprintf(buf + len, size - len,
		"Chain \| privNF \| # Readings \| NF Readings\n");
		for (i = 0; i < NUM_NF_READINGS; i++) {
		if (!(chainmask & (1 << i)) \|\|
		((i >= AR5416_MAX_CHAINS) && !conf_is_ht40(conf)))
		continue;

		nread = AR_PHY_CCA_FILTERWINDOW_LENGTH - h[i].invalidNFcount;
		len += snprintf(buf + len, size - len, " %d\t %d\t %d\t\t",
		i, h[i].privNF, nread);
		for (j = 0; j < nread; j++)
		len += snprintf(buf + len, size - len,
		" %d", h[i].nfCalBuffer[j]);
		len += snprintf(buf + len, size - len, "\n");
		}

		if (len > size)
		len = size;

		retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
		kfree(buf);

		return retval;
		}

		static const struct file_operations fops_dump_nfcal = {
		.read = read_file_dump_nfcal,
		.open = ath9k_debugfs_open,
		.owner = THIS_MODULE,
		.llseek = default_llseek,
		};

		static ssize_t read_file_base_eeprom(struct file file, char __user user_buf,
		size_t count, loff_t *ppos)
		{
		@@ -1262,6 +1315,8 @@ int ath9k_init_debug(struct ath_hw *ah)
		&ah->config.cwm_ignore_extcca);
		debugfs_create_file("regdump", S_IRUSR, sc->debug.debugfs_phy, sc,
		&fops_regdump);
		debugfs_create_file("dump_nfcal", S_IRUSR, sc->debug.debugfs_phy, sc,
		&fops_dump_nfcal);
		debugfs_create_file("base_eeprom", S_IRUSR, sc->debug.debugfs_phy, sc,
		&fops_base_eeprom);
		debugfs_create_file("modal_eeprom", S_IRUSR, sc->debug.debugfs_phy, sc,

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