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mt76: mt7615: add support for testing hardware reset

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Send an undersized corrupt packet to the DMA queue, which causes the
firmware to issue a full chip reset

Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2020-01-31 16:37:02 +01:00
parent 0f06914acf
commit db97358df4
1 changed files with 24 additions and 0 deletions
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mt7615/debugfs.c
+24
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@@ -98,6 +98,28 @@ mt7615_fw_debug_get(void *data, u64 *val)
DEFINE_DEBUGFS_ATTRIBUTE(fops_fw_debug, mt7615_fw_debug_get,
mt7615_fw_debug_set, "%lld\n");
static int
mt7615_reset_test_set(void *data, u64 val)
{
struct mt7615_dev *dev = data;
struct sk_buff *skb;
if (!mt7615_wait_for_mcu_init(dev))
return 0;
skb = alloc_skb(1, GFP_KERNEL);
if (!skb)
return -ENOMEM;
skb_put(skb, 1);
mt76_tx_queue_skb_raw(dev, 0, skb, 0);
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(fops_reset_test, NULL,
mt7615_reset_test_set, "%lld\n");
static int
mt7615_ampdu_stat_read(struct seq_file *file, void *data)
{
@@ -264,6 +286,8 @@ int mt7615_init_debugfs(struct mt7615_dev *dev)
&dev->radar_pattern.power);
debugfs_create_file("radar_trigger", 0200, dir, dev,
&fops_radar_pattern);
debugfs_create_file("reset_test", 0200, dir, dev,
&fops_reset_test);
debugfs_create_devm_seqfile(dev->mt76.dev, "temperature", dir,
mt7615_read_temperature);