ath5k: add antenna statistics and debugfs file for antenna settings

keep statistics about which antenna was used for TX and RX. this is used only for debugging right now, but might have other applications later. add a new file 'antenna' in debugfs (/sys/kernel/debug/ath5k/phy0/antenna) to show antenna use statistics and antenna diversity related register values. it can also be used to set the antenna mode until we have proper support for that in iw: - echo diversity > antenna: use default antenna mode (RX and TX diversity) - echo fixed-a > antenna: use fixed antenna A for RX and TX - echo fixed-b > antenna: use fixed antenna B for RX and TX - echo clear > antenna: reset antenna statistics Signed-off-by: Bruno Randolf <br1@einfach.org> Acked-by: Nick Kossifidis <mickflemm@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
author: Bruno Randolf <br1@einfach.org> 2010-03-09 02:55:17 -0500
committer: John W. Linville <linville@tuxdriver.com> 2010-03-10 17:44:30 -0500
commit: 604eeadd1880bddfb155369491cc13fb8d3f9df6 (patch)
tree: c9a7357fa34d9751c0dc2b36fb1004281a083cfb /drivers/net/wireless/ath/ath5k/debug.c
parent: 5a7d05830de1ecfdaf0a9fb43e4aa08abbdbfe9f (diff)
1 files changed, 106 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath5k/debug.c b/drivers/net/wireless/ath/ath5k/debug.c
index 747508c15d3..236f20f9cd4 100644
--- a/drivers/net/wireless/ath/ath5k/debug.c
+++ b/drivers/net/wireless/ath/ath5k/debug.c
@@ -364,6 +364,107 @@ static const struct file_operations fops_debug = {
 };
+/* debugfs: antenna */
+static ssize_t read_file_antenna(struct file *file, char __user *user_buf,
+                                   size_t count, loff_t *ppos)
+{
+        struct ath5k_softc *sc = file->private_data;
+        char buf[700];
+        unsigned int len = 0;
+        unsigned int i;
+        unsigned int v;
+        len += snprintf(buf+len, sizeof(buf)-len, "antenna mode\t%d\n",
+                sc->ah->ah_ant_mode);
+        len += snprintf(buf+len, sizeof(buf)-len, "default antenna\t%d\n",
+                sc->ah->ah_def_ant);
+        len += snprintf(buf+len, sizeof(buf)-len, "tx antenna\t%d\n",
+                sc->ah->ah_tx_ant);
+        len += snprintf(buf+len, sizeof(buf)-len, "\nANTENNA\t\tRX\tTX\n");
+        for (i = 1; i < ARRAY_SIZE(sc->stats.antenna_rx); i++) {
+                len += snprintf(buf+len, sizeof(buf)-len,
+                        "[antenna %d]\t%d\t%d\n",
+                        i, sc->stats.antenna_rx[i], sc->stats.antenna_tx[i]);
+        }
+        len += snprintf(buf+len, sizeof(buf)-len, "[invalid]\t%d\t%d\n",
+                        sc->stats.antenna_rx[0], sc->stats.antenna_tx[0]);
+        v = ath5k_hw_reg_read(sc->ah, AR5K_DEFAULT_ANTENNA);
+        len += snprintf(buf+len, sizeof(buf)-len,
+                        "\nAR5K_DEFAULT_ANTENNA\t0x%08x\n", v);
+        v = ath5k_hw_reg_read(sc->ah, AR5K_STA_ID1);
+        len += snprintf(buf+len, sizeof(buf)-len,
+                "AR5K_STA_ID1_DEFAULT_ANTENNA\t%d\n",
+                (v & AR5K_STA_ID1_DEFAULT_ANTENNA) != 0);
+        len += snprintf(buf+len, sizeof(buf)-len,
+                "AR5K_STA_ID1_DESC_ANTENNA\t%d\n",
+                (v & AR5K_STA_ID1_DESC_ANTENNA) != 0);
+        len += snprintf(buf+len, sizeof(buf)-len,
+                "AR5K_STA_ID1_RTS_DEF_ANTENNA\t%d\n",
+                (v & AR5K_STA_ID1_RTS_DEF_ANTENNA) != 0);
+        len += snprintf(buf+len, sizeof(buf)-len,
+                "AR5K_STA_ID1_SELFGEN_DEF_ANT\t%d\n",
+                (v & AR5K_STA_ID1_SELFGEN_DEF_ANT) != 0);
+        v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_AGCCTL);
+        len += snprintf(buf+len, sizeof(buf)-len,
+                "\nAR5K_PHY_AGCCTL_OFDM_DIV_DIS\t%d\n",
+                (v & AR5K_PHY_AGCCTL_OFDM_DIV_DIS) != 0);
+        v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_RESTART);
+        len += snprintf(buf+len, sizeof(buf)-len,
+                "AR5K_PHY_RESTART_DIV_GC\t\t%x\n",
+                (v & AR5K_PHY_RESTART_DIV_GC) >> AR5K_PHY_RESTART_DIV_GC_S);
+        v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_FAST_ANT_DIV);
+        len += snprintf(buf+len, sizeof(buf)-len,
+                "AR5K_PHY_FAST_ANT_DIV_EN\t%d\n",
+                (v & AR5K_PHY_FAST_ANT_DIV_EN) != 0);
+        return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+static ssize_t write_file_antenna(struct file *file,
+                                 const char __user *userbuf,
+                                 size_t count, loff_t *ppos)
+{
+        struct ath5k_softc *sc = file->private_data;
+        unsigned int i;
+        char buf[20];
+        if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
+                return -EFAULT;
+        if (strncmp(buf, "diversity", 9) == 0) {
+                ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_DEFAULT);
+                printk(KERN_INFO "ath5k debug: enable diversity\n");
+        } else if (strncmp(buf, "fixed-a", 7) == 0) {
+                ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_FIXED_A);
+                printk(KERN_INFO "ath5k debugfs: fixed antenna A\n");
+        } else if (strncmp(buf, "fixed-b", 7) == 0) {
+                ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_FIXED_B);
+                printk(KERN_INFO "ath5k debug: fixed antenna B\n");
+        } else if (strncmp(buf, "clear", 5) == 0) {
+                for (i = 0; i < ARRAY_SIZE(sc->stats.antenna_rx); i++) {
+                        sc->stats.antenna_rx[i] = 0;
+                        sc->stats.antenna_tx[i] = 0;
+                }
+                printk(KERN_INFO "ath5k debug: cleared antenna stats\n");
+        }
+        return count;
+}
+static const struct file_operations fops_antenna = {
+        .read = read_file_antenna,
+        .write = write_file_antenna,
+        .open = ath5k_debugfs_open,
+        .owner = THIS_MODULE,
+};
 /* init */
 void
@@ -393,6 +494,10 @@ ath5k_debug_init_device(struct ath5k_softc *sc)
        sc->debug.debugfs_reset = debugfs_create_file("reset", S_IWUSR,
                                sc->debug.debugfs_phydir, sc, &fops_reset);
+        sc->debug.debugfs_antenna = debugfs_create_file("antenna",
+                                S_IWUSR | S_IRUSR,
+                                sc->debug.debugfs_phydir, sc, &fops_antenna);
 }
 void
@@ -408,6 +513,7 @@ ath5k_debug_finish_device(struct ath5k_softc *sc)
        debugfs_remove(sc->debug.debugfs_registers);
        debugfs_remove(sc->debug.debugfs_beacon);
        debugfs_remove(sc->debug.debugfs_reset);
+        debugfs_remove(sc->debug.debugfs_antenna);
        debugfs_remove(sc->debug.debugfs_phydir);
 }
author	Bruno Randolf <br1@einfach.org>	2010-03-09 02:55:17 -0500
committer	John W. Linville <linville@tuxdriver.com>	2010-03-10 17:44:30 -0500
commit	604eeadd1880bddfb155369491cc13fb8d3f9df6 (patch)
tree	c9a7357fa34d9751c0dc2b36fb1004281a083cfb /drivers/net/wireless/ath/ath5k/debug.c
parent	5a7d05830de1ecfdaf0a9fb43e4aa08abbdbfe9f (diff)

diff --git a/drivers/net/wireless/ath/ath5k/debug.c b/drivers/net/wireless/ath/ath5k/debug.c index 747508c15d3..236f20f9cd4 100644 --- a/drivers/net/wireless/ath/ath5k/debug.c +++ b/drivers/net/wireless/ath/ath5k/debug.c
@@ -364,6 +364,107 @@ static const struct file_operations fops_debug = {
364	};	364	};
365		365
366		366
		367	/* debugfs: antenna */
		368
		369	static ssize_t read_file_antenna(struct file file, char __user user_buf,
		370	size_t count, loff_t *ppos)
		371	{
		372	struct ath5k_softc *sc = file->private_data;
		373	char buf[700];
		374	unsigned int len = 0;
		375	unsigned int i;
		376	unsigned int v;
		377
		378	len += snprintf(buf+len, sizeof(buf)-len, "antenna mode\t%d\n",
		379	sc->ah->ah_ant_mode);
		380	len += snprintf(buf+len, sizeof(buf)-len, "default antenna\t%d\n",
		381	sc->ah->ah_def_ant);
		382	len += snprintf(buf+len, sizeof(buf)-len, "tx antenna\t%d\n",
		383	sc->ah->ah_tx_ant);
		384
		385	len += snprintf(buf+len, sizeof(buf)-len, "\nANTENNA\t\tRX\tTX\n");
		386	for (i = 1; i < ARRAY_SIZE(sc->stats.antenna_rx); i++) {
		387	len += snprintf(buf+len, sizeof(buf)-len,
		388	"[antenna %d]\t%d\t%d\n",
		389	i, sc->stats.antenna_rx[i], sc->stats.antenna_tx[i]);
		390	}
		391	len += snprintf(buf+len, sizeof(buf)-len, "[invalid]\t%d\t%d\n",
		392	sc->stats.antenna_rx[0], sc->stats.antenna_tx[0]);
		393
		394	v = ath5k_hw_reg_read(sc->ah, AR5K_DEFAULT_ANTENNA);
		395	len += snprintf(buf+len, sizeof(buf)-len,
		396	"\nAR5K_DEFAULT_ANTENNA\t0x%08x\n", v);
		397
		398	v = ath5k_hw_reg_read(sc->ah, AR5K_STA_ID1);
		399	len += snprintf(buf+len, sizeof(buf)-len,
		400	"AR5K_STA_ID1_DEFAULT_ANTENNA\t%d\n",
		401	(v & AR5K_STA_ID1_DEFAULT_ANTENNA) != 0);
		402	len += snprintf(buf+len, sizeof(buf)-len,
		403	"AR5K_STA_ID1_DESC_ANTENNA\t%d\n",
		404	(v & AR5K_STA_ID1_DESC_ANTENNA) != 0);
		405	len += snprintf(buf+len, sizeof(buf)-len,
		406	"AR5K_STA_ID1_RTS_DEF_ANTENNA\t%d\n",
		407	(v & AR5K_STA_ID1_RTS_DEF_ANTENNA) != 0);
		408	len += snprintf(buf+len, sizeof(buf)-len,
		409	"AR5K_STA_ID1_SELFGEN_DEF_ANT\t%d\n",
		410	(v & AR5K_STA_ID1_SELFGEN_DEF_ANT) != 0);
		411
		412	v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_AGCCTL);
		413	len += snprintf(buf+len, sizeof(buf)-len,
		414	"\nAR5K_PHY_AGCCTL_OFDM_DIV_DIS\t%d\n",
		415	(v & AR5K_PHY_AGCCTL_OFDM_DIV_DIS) != 0);
		416
		417	v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_RESTART);
		418	len += snprintf(buf+len, sizeof(buf)-len,
		419	"AR5K_PHY_RESTART_DIV_GC\t\t%x\n",
		420	(v & AR5K_PHY_RESTART_DIV_GC) >> AR5K_PHY_RESTART_DIV_GC_S);
		421
		422	v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_FAST_ANT_DIV);
		423	len += snprintf(buf+len, sizeof(buf)-len,
		424	"AR5K_PHY_FAST_ANT_DIV_EN\t%d\n",
		425	(v & AR5K_PHY_FAST_ANT_DIV_EN) != 0);
		426
		427	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
		428	}
		429
		430	static ssize_t write_file_antenna(struct file *file,
		431	const char __user *userbuf,
		432	size_t count, loff_t *ppos)
		433	{
		434	struct ath5k_softc *sc = file->private_data;
		435	unsigned int i;
		436	char buf[20];
		437
		438	if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
		439	return -EFAULT;
		440
		441	if (strncmp(buf, "diversity", 9) == 0) {
		442	ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_DEFAULT);
		443	printk(KERN_INFO "ath5k debug: enable diversity\n");
		444	} else if (strncmp(buf, "fixed-a", 7) == 0) {
		445	ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_FIXED_A);
		446	printk(KERN_INFO "ath5k debugfs: fixed antenna A\n");
		447	} else if (strncmp(buf, "fixed-b", 7) == 0) {
		448	ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_FIXED_B);
		449	printk(KERN_INFO "ath5k debug: fixed antenna B\n");
		450	} else if (strncmp(buf, "clear", 5) == 0) {
		451	for (i = 0; i < ARRAY_SIZE(sc->stats.antenna_rx); i++) {
		452	sc->stats.antenna_rx[i] = 0;
		453	sc->stats.antenna_tx[i] = 0;
		454	}
		455	printk(KERN_INFO "ath5k debug: cleared antenna stats\n");
		456	}
		457	return count;
		458	}
		459
		460	static const struct file_operations fops_antenna = {
		461	.read = read_file_antenna,
		462	.write = write_file_antenna,
		463	.open = ath5k_debugfs_open,
		464	.owner = THIS_MODULE,
		465	};
		466
		467
367	/* init */	468	/* init */
368		469
369	void	470	void
@@ -393,6 +494,10 @@ ath5k_debug_init_device(struct ath5k_softc *sc)
393		494
394	sc->debug.debugfs_reset = debugfs_create_file("reset", S_IWUSR,	495	sc->debug.debugfs_reset = debugfs_create_file("reset", S_IWUSR,
395	sc->debug.debugfs_phydir, sc, &fops_reset);	496	sc->debug.debugfs_phydir, sc, &fops_reset);
		497
		498	sc->debug.debugfs_antenna = debugfs_create_file("antenna",
		499	S_IWUSR \| S_IRUSR,
		500	sc->debug.debugfs_phydir, sc, &fops_antenna);
396	}	501	}
397		502
398	void	503	void
@@ -408,6 +513,7 @@ ath5k_debug_finish_device(struct ath5k_softc *sc)
408	debugfs_remove(sc->debug.debugfs_registers);	513	debugfs_remove(sc->debug.debugfs_registers);
409	debugfs_remove(sc->debug.debugfs_beacon);	514	debugfs_remove(sc->debug.debugfs_beacon);
410	debugfs_remove(sc->debug.debugfs_reset);	515	debugfs_remove(sc->debug.debugfs_reset);
		516	debugfs_remove(sc->debug.debugfs_antenna);
411	debugfs_remove(sc->debug.debugfs_phydir);	517	debugfs_remove(sc->debug.debugfs_phydir);
412	}	518	}
413		519