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Commit 482b30b6 authored by Oleksij Rempel's avatar Oleksij Rempel Committed by John W. Linville
Browse files

ath9k_htc: catch fw panic pattern 



... and print what we get.

Signed-off-by: default avatarOleksij Rempel <linux@rempel-privat.de>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent c8ec0f5c

drivers/net/wireless/ath/ath9k/htc_hst.c

+36 −0
Original line number Diff line number Diff line
@@ -358,6 +358,36 @@ void ath9k_htc_txcompletion_cb(struct htc_target *htc_handle, 
		kfree_skb(skb);

}



static void ath9k_htc_fw_panic_report(struct htc_target *htc_handle,

				      struct sk_buff *skb)

{

	uint32_t *pattern = (uint32_t *)skb->data;



	switch (*pattern) {

	case 0x33221199:

		{

		struct htc_panic_bad_vaddr *htc_panic;

		htc_panic = (struct htc_panic_bad_vaddr *) skb->data;

		dev_err(htc_handle->dev, "ath: firmware panic! "

			"exccause: 0x%08x; pc: 0x%08x; badvaddr: 0x%08x.\n",

			htc_panic->exccause, htc_panic->pc,

			htc_panic->badvaddr);

		break;

		}

	case 0x33221299:

		{

		struct htc_panic_bad_epid *htc_panic;

		htc_panic = (struct htc_panic_bad_epid *) skb->data;

		dev_err(htc_handle->dev, "ath: firmware panic! "

			"bad epid: 0x%08x\n", htc_panic->epid);

		break;

		}

	default:

		dev_err(htc_handle->dev, "ath: uknown panic pattern!\n");

		break;

	}

}



/*

 * HTC Messages are handled directly here and the obtained SKB

 * is freed.
@@ -379,6 +409,12 @@ void ath9k_htc_rx_msg(struct htc_target *htc_handle, 
	htc_hdr = (struct htc_frame_hdr *) skb->data;

	epid = htc_hdr->endpoint_id;



	if (epid == 0x99) {

		ath9k_htc_fw_panic_report(htc_handle, skb);

		kfree_skb(skb);

		return;

	}



	if (epid >= ENDPOINT_MAX) {

		if (pipe_id != USB_REG_IN_PIPE)

			dev_kfree_skb_any(skb);

drivers/net/wireless/ath/ath9k/htc_hst.h

+12 −0
Original line number Diff line number Diff line
@@ -77,6 +77,18 @@ struct htc_config_pipe_msg { 
	u8 credits;

} __packed;



struct htc_panic_bad_vaddr {

	__be32 pattern;

	__be32 exccause;

	__be32 pc;

	__be32 badvaddr;

} __packed;



struct htc_panic_bad_epid {

	__be32 pattern;

	__be32 epid;

} __packed;



struct htc_ep_callbacks {

	void *priv;

	void (*tx) (void *, struct sk_buff *, enum htc_endpoint_id, bool txok);