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@xxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/wil6210/debugfs.c | 40 ++++++++++++++++++++++++------
1 file 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,
--
1.8.3.2
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