package/kernel/mac80211/patches/335-v4.18-0005-brcmfmac-trigger-memory-dump-upon-firmware-halt-sign.patch

   1 From 8a3ab2f38f1669e3be6433a1f6b82a077b38c4c7 Mon Sep 17 00:00:00 2001
   2 From: Franky Lin <franky.lin@broadcom.com>
   3 Date: Wed, 16 May 2018 14:12:02 +0200
   4 Subject: [PATCH] brcmfmac: trigger memory dump upon firmware halt signal
   5
   6 PCIe dongle firmware signals a halt/trap through mailbox interrupt.
   7 Trigger a memory dump upon receiving such signal could help to provide
   8 useful information for issue debug.
   9
  10 Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
  11 Signed-off-by: Franky Lin <franky.lin@broadcom.com>
  12 Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
  13 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
  14 ---
  15  drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c | 5 +++++
  16  1 file changed, 5 insertions(+)
  17
  18 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
  19 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
  20 @@ -182,6 +182,7 @@ static const struct brcmf_firmware_mappi
  21  #define BRCMF_D2H_DEV_D3_ACK                   0x00000001
  22  #define BRCMF_D2H_DEV_DS_ENTER_REQ             0x00000002
  23  #define BRCMF_D2H_DEV_DS_EXIT_NOTE             0x00000004
  24 +#define BRCMF_D2H_DEV_FWHALT                   0x10000000
  25
  26  #define BRCMF_H2D_HOST_D3_INFORM               0x00000001
  27  #define BRCMF_H2D_HOST_DS_ACK                  0x00000002
  28 @@ -717,6 +718,10 @@ static void brcmf_pcie_handle_mb_data(st
  29                 devinfo->mbdata_completed = true;
  30                 wake_up(&devinfo->mbdata_resp_wait);
  31         }
  32 +       if (dtoh_mb_data & BRCMF_D2H_DEV_FWHALT) {
  33 +               brcmf_dbg(PCIE, "D2H_MB_DATA: FW HALT\n");
  34 +               brcmf_dev_coredump(&devinfo->pdev->dev);
  35 +       }
  36  }
  37
  38