ath9k: add a few debugfs files to access the chainmasks and registers

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18503 3c298f89-4303-0410-b956-a3cf2f4a3e73

2 files changed, 258 insertions, 0 deletions

diff --git a/package/mac80211/patches/520-ath9k_debugfs_chainmask.patch b/package/mac80211/patches/520-ath9k_debugfs_chainmask.patch
new file mode 100644
index 0000000000..d8ca8dfbfb
--- /dev/null
+++ b/package/mac80211/patches/520-ath9k_debugfs_chainmask.patch
@@ -0,0 +1,130 @@
+--- a/drivers/net/wireless/ath/ath9k/debug.c
++++ b/drivers/net/wireless/ath/ath9k/debug.c
+@@ -71,6 +71,90 @@ static const struct file_operations fops
+ 	.owner = THIS_MODULE
+ };
+ 
++static ssize_t read_file_tx_chainmask(struct file *file, char __user *user_buf,
++			     size_t count, loff_t *ppos)
++{
++	struct ath_softc *sc = file->private_data;
++	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
++	char buf[32];
++	unsigned int len;
++
++	len = snprintf(buf, sizeof(buf), "0x%08x\n", common->tx_chainmask);
++	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
++}
++
++static ssize_t write_file_tx_chainmask(struct file *file, const char __user *user_buf,
++			     size_t count, loff_t *ppos)
++{
++	struct ath_softc *sc = file->private_data;
++	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
++	unsigned long mask;
++	char buf[32];
++	ssize_t len;
++
++	len = min(count, sizeof(buf) - 1);
++	if (copy_from_user(buf, user_buf, len))
++		return -EINVAL;
++
++	buf[len] = '\0';
++	if (strict_strtoul(buf, 0, &mask))
++		return -EINVAL;
++
++	common->tx_chainmask = mask;
++	sc->sc_ah->caps.tx_chainmask = mask;
++	return count;
++}
++
++static const struct file_operations fops_tx_chainmask = {
++	.read = read_file_tx_chainmask,
++	.write = write_file_tx_chainmask,
++	.open = ath9k_debugfs_open,
++	.owner = THIS_MODULE
++};
++
++
++static ssize_t read_file_rx_chainmask(struct file *file, char __user *user_buf,
++			     size_t count, loff_t *ppos)
++{
++	struct ath_softc *sc = file->private_data;
++	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
++	char buf[32];
++	unsigned int len;
++
++	len = snprintf(buf, sizeof(buf), "0x%08x\n", common->rx_chainmask);
++	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
++}
++
++static ssize_t write_file_rx_chainmask(struct file *file, const char __user *user_buf,
++			     size_t count, loff_t *ppos)
++{
++	struct ath_softc *sc = file->private_data;
++	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
++	unsigned long mask;
++	char buf[32];
++	ssize_t len;
++
++	len = min(count, sizeof(buf) - 1);
++	if (copy_from_user(buf, user_buf, len))
++		return -EINVAL;
++
++	buf[len] = '\0';
++	if (strict_strtoul(buf, 0, &mask))
++		return -EINVAL;
++
++	common->rx_chainmask = mask;
++	sc->sc_ah->caps.rx_chainmask = mask;
++	return count;
++}
++
++static const struct file_operations fops_rx_chainmask = {
++	.read = read_file_rx_chainmask,
++	.write = write_file_rx_chainmask,
++	.open = ath9k_debugfs_open,
++	.owner = THIS_MODULE
++};
++
++
+ static ssize_t read_file_dma(struct file *file, char __user *user_buf,
+ 			     size_t count, loff_t *ppos)
+ {
+@@ -568,6 +652,16 @@ int ath9k_init_debug(struct ath_hw *ah)
+ 	if (!sc->debug.debugfs_debug)
+ 		goto err;
+ 
++	sc->debug.debugfs_rx_chainmask = debugfs_create_file("rx_chainmask",
++		S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_rx_chainmask);
++	if (!sc->debug.debugfs_rx_chainmask)
++		goto err;
++
++	sc->debug.debugfs_tx_chainmask = debugfs_create_file("tx_chainmask",
++		S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_tx_chainmask);
++	if (!sc->debug.debugfs_tx_chainmask)
++		goto err;
++
+ 	sc->debug.debugfs_dma = debugfs_create_file("dma", S_IRUSR,
+ 				       sc->debug.debugfs_phy, sc, &fops_dma);
+ 	if (!sc->debug.debugfs_dma)
+@@ -611,6 +705,8 @@ void ath9k_exit_debug(struct ath_hw *ah)
+ 	struct ath_common *common = ath9k_hw_common(ah);
+ 	struct ath_softc *sc = (struct ath_softc *) common->priv;
+ 
++	debugfs_remove(sc->debug.debugfs_tx_chainmask);
++	debugfs_remove(sc->debug.debugfs_rx_chainmask);
+ 	debugfs_remove(sc->debug.debugfs_xmit);
+ 	debugfs_remove(sc->debug.debugfs_wiphy);
+ 	debugfs_remove(sc->debug.debugfs_rcstat);
+--- a/drivers/net/wireless/ath/ath9k/debug.h
++++ b/drivers/net/wireless/ath/ath9k/debug.h
+@@ -123,6 +123,8 @@ struct ath_stats {
+ };
+ 
+ struct ath9k_debug {
++	struct dentry *debugfs_rx_chainmask;
++	struct dentry *debugfs_tx_chainmask;
+ 	struct dentry *debugfs_phy;
+ 	struct dentry *debugfs_debug;
+ 	struct dentry *debugfs_dma;
diff --git a/package/mac80211/patches/530-ath9k_debugfs_regaccess.patch b/package/mac80211/patches/530-ath9k_debugfs_regaccess.patch
new file mode 100644
index 0000000000..b973dbb2aa
--- /dev/null
+++ b/package/mac80211/patches/530-ath9k_debugfs_regaccess.patch
@@ -0,0 +1,128 @@
+--- a/drivers/net/wireless/ath/ath9k/debug.c
++++ b/drivers/net/wireless/ath/ath9k/debug.c
+@@ -634,6 +634,86 @@ static const struct file_operations fops
+ 	.owner = THIS_MODULE
+ };
+ 
++static ssize_t read_file_regidx(struct file *file, char __user *user_buf,
++                                size_t count, loff_t *ppos)
++{
++	struct ath_softc *sc = file->private_data;
++	char buf[32];
++	unsigned int len;
++
++	len = snprintf(buf, sizeof(buf), "0x%08x\n", sc->debug.regidx);
++	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
++}
++
++static ssize_t write_file_regidx(struct file *file, const char __user *user_buf,
++			     size_t count, loff_t *ppos)
++{
++	struct ath_softc *sc = file->private_data;
++	unsigned long regidx;
++	char buf[32];
++	ssize_t len;
++
++	len = min(count, sizeof(buf) - 1);
++	if (copy_from_user(buf, user_buf, len))
++		return -EINVAL;
++
++	buf[len] = '\0';
++	if (strict_strtoul(buf, 0, &regidx))
++		return -EINVAL;
++
++	sc->debug.regidx = regidx;
++	return count;
++}
++
++static const struct file_operations fops_regidx = {
++	.read = read_file_regidx,
++	.write = write_file_regidx,
++	.open = ath9k_debugfs_open,
++	.owner = THIS_MODULE
++};
++
++static ssize_t read_file_regval(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;
++	char buf[32];
++	unsigned int len;
++	u32 regval;
++
++	regval = REG_READ_D(ah, sc->debug.regidx);
++	len = snprintf(buf, sizeof(buf), "0x%08x\n", regval);
++	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
++}
++
++static ssize_t write_file_regval(struct file *file, const char __user *user_buf,
++			     size_t count, loff_t *ppos)
++{
++	struct ath_softc *sc = file->private_data;
++	struct ath_hw *ah = sc->sc_ah;
++	unsigned long regval;
++	char buf[32];
++	ssize_t len;
++
++	len = min(count, sizeof(buf) - 1);
++	if (copy_from_user(buf, user_buf, len))
++		return -EINVAL;
++
++	buf[len] = '\0';
++	if (strict_strtoul(buf, 0, &regval))
++		return -EINVAL;
++
++	REG_WRITE_D(ah, sc->debug.regidx, regval);
++	return count;
++}
++
++static const struct file_operations fops_regval = {
++	.read = read_file_regval,
++	.write = write_file_regval,
++	.open = ath9k_debugfs_open,
++	.owner = THIS_MODULE
++};
++
+ int ath9k_init_debug(struct ath_hw *ah)
+ {
+ 	struct ath_common *common = ath9k_hw_common(ah);
+@@ -694,6 +774,17 @@ int ath9k_init_debug(struct ath_hw *ah)
+ 	if (!sc->debug.debugfs_xmit)
+ 		goto err;
+ 
++	sc->debug.regidx = 0;
++	sc->debug.debugfs_regidx = debugfs_create_file("regidx",
++			S_IRUSR|S_IWUSR, sc->debug.debugfs_phy, sc, &fops_regidx);
++	if (!sc->debug.debugfs_regidx)
++		goto err;
++
++	sc->debug.debugfs_regval = debugfs_create_file("regval",
++			S_IRUSR|S_IWUSR, sc->debug.debugfs_phy, sc, &fops_regval);
++	if (!sc->debug.debugfs_regval)
++		goto err;
++
+ 	return 0;
+ err:
+ 	ath9k_exit_debug(ah);
+@@ -707,6 +798,8 @@ void ath9k_exit_debug(struct ath_hw *ah)
+ 
+ 	debugfs_remove(sc->debug.debugfs_tx_chainmask);
+ 	debugfs_remove(sc->debug.debugfs_rx_chainmask);
++	debugfs_remove(sc->debug.debugfs_regval);
++	debugfs_remove(sc->debug.debugfs_regidx);
+ 	debugfs_remove(sc->debug.debugfs_xmit);
+ 	debugfs_remove(sc->debug.debugfs_wiphy);
+ 	debugfs_remove(sc->debug.debugfs_rcstat);
+--- a/drivers/net/wireless/ath/ath9k/debug.h
++++ b/drivers/net/wireless/ath/ath9k/debug.h
+@@ -132,6 +132,9 @@ struct ath9k_debug {
+ 	struct dentry *debugfs_rcstat;
+ 	struct dentry *debugfs_wiphy;
+ 	struct dentry *debugfs_xmit;
++	struct dentry *debugfs_regidx;
++	struct dentry *debugfs_regval;
++	u32 regidx;
+ 	struct ath_stats stats;
+ };
+