diff options
| author | Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com> | 2014-02-27 14:20:41 (GMT) |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2014-02-28 19:33:28 (GMT) |
| commit | 3a85543e9f9f6821d27d33d436f2bad96e5166df (patch) | |
| tree | a0241a232a2989deb54408b7139dc48a1ed5b6fe | |
| parent | 1647f12f1b511c2629b9b8d23061aa54ad8a9795 (diff) | |
| download | linux-3a85543e9f9f6821d27d33d436f2bad96e5166df.tar.xz | |
wil6210: [DEBUG] allow to query Rx and all Tx VRING descriptors
Expand debug capabilities to query all Tx/Rx descriptors. Usefull to analyse
various hardware/software stall situations. Printed is whole descriptor content
and the frame itself.
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/debugfs.c | 40 |
1 files changed, 32 insertions, 8 deletions
diff --git a/drivers/net/wireless/ath/wil6210/debugfs.c b/drivers/net/wireless/ath/wil6210/debugfs.c index 1caa319..74bb427 100644 --- a/drivers/net/wireless/ath/wil6210/debugfs.c +++ b/drivers/net/wireless/ath/wil6210/debugfs.c @@ -26,6 +26,8 @@ /* Nasty hack. Better have per device instances */ static u32 mem_addr; static u32 dbg_txdesc_index; +static u32 dbg_vring_index; /* 25 for Rx, 0..24 for Tx */ +#define WIL_DBG_VRING_INDEX_RX (WIL6210_MAX_TX_RINGS + 1) static void wil_print_vring(struct seq_file *s, struct wil6210_priv *wil, const char *name, struct vring *vring) @@ -390,25 +392,39 @@ static const struct file_operations fops_reset = { .write = wil_write_file_reset, .open = simple_open, }; -/*---------Tx descriptor------------*/ +/*---------Tx/Rx descriptor------------*/ static int wil_txdesc_debugfs_show(struct seq_file *s, void *data) { struct wil6210_priv *wil = s->private; - struct vring *vring = &(wil->vring_tx[0]); + struct vring *vring; + if (dbg_vring_index <= WIL6210_MAX_TX_RINGS) + vring = &(wil->vring_tx[dbg_vring_index]); + else + vring = &wil->vring_rx; if (!vring->va) { - seq_printf(s, "No Tx VRING\n"); + if (dbg_vring_index <= WIL6210_MAX_TX_RINGS) + seq_printf(s, "No Tx[%2d] VRING\n", dbg_vring_index); + else + seq_puts(s, "No Rx VRING\n"); return 0; } if (dbg_txdesc_index < vring->size) { + /* use struct vring_tx_desc for Rx as well, + * only field used, .dma.length, is the same + */ volatile struct vring_tx_desc *d = &(vring->va[dbg_txdesc_index].tx); volatile u32 *u = (volatile u32 *)d; struct sk_buff *skb = vring->ctx[dbg_txdesc_index].skb; - seq_printf(s, "Tx[%3d] = {\n", dbg_txdesc_index); + if (dbg_vring_index <= WIL6210_MAX_TX_RINGS) + seq_printf(s, "Tx[%2d][%3d] = {\n", dbg_vring_index, + dbg_txdesc_index); + else + seq_printf(s, "Rx[%3d] = {\n", dbg_txdesc_index); seq_printf(s, " MAC = 0x%08x 0x%08x 0x%08x 0x%08x\n", u[0], u[1], u[2], u[3]); seq_printf(s, " DMA = 0x%08x 0x%08x 0x%08x 0x%08x\n", @@ -439,8 +455,13 @@ static int wil_txdesc_debugfs_show(struct seq_file *s, void *data) } seq_printf(s, "}\n"); } else { - seq_printf(s, "TxDesc index (%d) >= size (%d)\n", - dbg_txdesc_index, vring->size); + if (dbg_vring_index <= WIL6210_MAX_TX_RINGS) + seq_printf(s, "[%2d] TxDesc index (%d) >= size (%d)\n", + dbg_vring_index, dbg_txdesc_index, + vring->size); + else + seq_printf(s, "RxDesc index (%d) >= size (%d)\n", + dbg_txdesc_index, vring->size); } return 0; @@ -581,9 +602,12 @@ int wil6210_debugfs_init(struct wil6210_priv *wil) debugfs_create_file("mbox", S_IRUGO, dbg, wil, &fops_mbox); debugfs_create_file("vrings", S_IRUGO, dbg, wil, &fops_vring); - debugfs_create_file("txdesc", S_IRUGO, dbg, wil, &fops_txdesc); - debugfs_create_u32("txdesc_index", S_IRUGO | S_IWUSR, dbg, + debugfs_create_file("desc", S_IRUGO, dbg, wil, &fops_txdesc); + debugfs_create_u32("desc_index", S_IRUGO | S_IWUSR, dbg, &dbg_txdesc_index); + debugfs_create_u32("vring_index", S_IRUGO | S_IWUSR, dbg, + &dbg_vring_index); + debugfs_create_file("bf", S_IRUGO, dbg, wil, &fops_bf); debugfs_create_file("ssid", S_IRUGO | S_IWUSR, dbg, wil, &fops_ssid); debugfs_create_u32("secure_pcp", S_IRUGO | S_IWUSR, dbg, |