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From 2fd3877b5bb7d39782c3205a1dcda02023b8514a Mon Sep 17 00:00:00 2001
From: Arend Van Spriel <arend.vanspriel@broadcom.com>
Date: Wed, 8 Nov 2017 14:36:31 +0100
Subject: [PATCH] brcmfmac: handle FWHALT mailbox indication
The firmware uses a mailbox to communicate to the host what is going
on. In the driver we validate the bit received. Various people seen
the following message:
brcmfmac: brcmf_sdio_hostmail: Unknown mailbox data content: 0x40012
Bit 4 is cause of this message, but this actually indicates the firmware
has halted. Handle this bit by giving a more meaningful error message.
Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
@@ -260,10 +260,11 @@ struct rte_console {
#define I_HMB_HOST_INT I_HMB_SW3 /* Miscellaneous Interrupt */
/* tohostmailboxdata */
-#define HMB_DATA_NAKHANDLED 1 /* retransmit NAK'd frame */
-#define HMB_DATA_DEVREADY 2 /* talk to host after enable */
-#define HMB_DATA_FC 4 /* per prio flowcontrol update flag */
-#define HMB_DATA_FWREADY 8 /* fw ready for protocol activity */
+#define HMB_DATA_NAKHANDLED 0x0001 /* retransmit NAK'd frame */
+#define HMB_DATA_DEVREADY 0x0002 /* talk to host after enable */
+#define HMB_DATA_FC 0x0004 /* per prio flowcontrol update flag */
+#define HMB_DATA_FWREADY 0x0008 /* fw ready for protocol activity */
+#define HMB_DATA_FWHALT 0x0010 /* firmware halted */
#define HMB_DATA_FCDATA_MASK 0xff000000
#define HMB_DATA_FCDATA_SHIFT 24
@@ -1094,6 +1095,10 @@ static u32 brcmf_sdio_hostmail(struct br
offsetof(struct sdpcmd_regs, tosbmailbox));
bus->sdcnt.f1regdata += 2;
+ /* dongle indicates the firmware has halted/crashed */
+ if (hmb_data & HMB_DATA_FWHALT)
+ brcmf_err("mailbox indicates firmware halted\n");
+
/* Dongle recomposed rx frames, accept them again */
if (hmb_data & HMB_DATA_NAKHANDLED) {
brcmf_dbg(SDIO, "Dongle reports NAK handled, expect rtx of %d\n",
@@ -1151,6 +1156,7 @@ static u32 brcmf_sdio_hostmail(struct br
HMB_DATA_NAKHANDLED |
HMB_DATA_FC |
HMB_DATA_FWREADY |
+ HMB_DATA_FWHALT |
HMB_DATA_FCDATA_MASK | HMB_DATA_VERSION_MASK))
brcmf_err("Unknown mailbox data content: 0x%02x\n",
hmb_data);
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