mac80211: brcmfmac: early work on FullMAC firmware crash recovery

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit 02aed76968d60d254ab9d0d8768f0c54dbfc6d9d)

1 files changed, 69 insertions, 0 deletions

diff --git a/package/kernel/mac80211/patches/339-v5.1-0012-brcmfmac-print-firmware-reported-general-status-erro.patch b/package/kernel/mac80211/patches/339-v5.1-0012-brcmfmac-print-firmware-reported-general-status-erro.patch
new file mode 100644
index 0000000000..313d501e82
--- /dev/null
+++ b/package/kernel/mac80211/patches/339-v5.1-0012-brcmfmac-print-firmware-reported-general-status-erro.patch
@@ -0,0 +1,69 @@
+From c91377495192cda096e52dc09c266b0d05f16d86 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Thu, 21 Feb 2019 11:33:25 +0100
+Subject: [PATCH] brcmfmac: print firmware reported general status errors
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Firmware may report general errors using a special message type. Add
+basic support for it by simply decoding & printing an error number.
+
+A sample situation in which firmware reports a buf error:
+CONSOLE: 027084.733 no host response IOCTL buffer available..so fail the request
+will now produce a "Firmware reported general error: 9" on the host.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+ .../broadcom/brcm80211/brcmfmac/msgbuf.c      | 24 +++++++++++++++++++
+ 1 file changed, 24 insertions(+)
+
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
+@@ -134,6 +134,14 @@ struct msgbuf_completion_hdr {
+ 	__le16				flow_ring_id;
+ };
+ 
++/* Data struct for the MSGBUF_TYPE_GEN_STATUS */
++struct msgbuf_gen_status {
++	struct msgbuf_common_hdr	msg;
++	struct msgbuf_completion_hdr	compl_hdr;
++	__le16				write_idx;
++	__le32				rsvd0[3];
++};
++
+ /* Data struct for the MSGBUF_TYPE_RING_STATUS */
+ struct msgbuf_ring_status {
+ 	struct msgbuf_common_hdr	msg;
+@@ -1194,6 +1202,18 @@ brcmf_msgbuf_process_rx_complete(struct
+ 	brcmf_netif_rx(ifp, skb);
+ }
+ 
++static void brcmf_msgbuf_process_gen_status(struct brcmf_msgbuf *msgbuf,
++					    void *buf)
++{
++	struct msgbuf_gen_status *gen_status = buf;
++	struct brcmf_pub *drvr = msgbuf->drvr;
++	int err;
++
++	err = le16_to_cpu(gen_status->compl_hdr.status);
++	if (err)
++		bphy_err(drvr, "Firmware reported general error: %d\n", err);
++}
++
+ static void brcmf_msgbuf_process_ring_status(struct brcmf_msgbuf *msgbuf,
+ 					     void *buf)
+ {
+@@ -1273,6 +1293,10 @@ static void brcmf_msgbuf_process_msgtype
+ 
+ 	msg = (struct msgbuf_common_hdr *)buf;
+ 	switch (msg->msgtype) {
++	case MSGBUF_TYPE_GEN_STATUS:
++		brcmf_dbg(MSGBUF, "MSGBUF_TYPE_GEN_STATUS\n");
++		brcmf_msgbuf_process_gen_status(msgbuf, buf);
++		break;
+ 	case MSGBUF_TYPE_RING_STATUS:
+ 		brcmf_dbg(MSGBUF, "MSGBUF_TYPE_RING_STATUS\n");
+ 		brcmf_msgbuf_process_ring_status(msgbuf, buf);