package/kernel/mac80211/patches/450-v5.2-0002-brcmfmac-add-a-function-designated-for-handling-firm.patch

   1 From a2ec87ddbf1637f854ffcfff9d12d392fa30758b Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
   3 Date: Tue, 26 Feb 2019 14:11:18 +0100
   4 Subject: [PATCH] brcmfmac: add a function designated for handling firmware
   5  fails
   6 MIME-Version: 1.0
   7 Content-Type: text/plain; charset=UTF-8
   8 Content-Transfer-Encoding: 8bit
   9
  10 This improves handling PCIe firmware halts by printing a clear error
  11 message and replaces a similar code in the SDIO bus support.
  12
  13 It will also allow further improvements like trying to recover from a
  14 firmware crash.
  15
  16 Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  17 Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
  18 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
  19 ---
  20  drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h |  2 ++
  21  .../net/wireless/broadcom/brcm80211/brcmfmac/core.c    | 10 ++++++++++
  22  .../net/wireless/broadcom/brcm80211/brcmfmac/pcie.c    |  2 +-
  23  .../net/wireless/broadcom/brcm80211/brcmfmac/sdio.c    |  4 ++--
  24  4 files changed, 15 insertions(+), 3 deletions(-)
  25
  26 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
  27 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
  28 @@ -262,6 +262,8 @@ void brcmf_detach(struct device *dev);
  29  void brcmf_dev_reset(struct device *dev);
  30  /* Request from bus module to initiate a coredump */
  31  void brcmf_dev_coredump(struct device *dev);
  32 +/* Indication that firmware has halted or crashed */
  33 +void brcmf_fw_crashed(struct device *dev);
  34
  35  /* Configure the "global" bus state used by upper layers */
  36  void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state);
  37 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
  38 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
  39 @@ -1294,6 +1294,16 @@ void brcmf_dev_coredump(struct device *d
  40                 brcmf_dbg(TRACE, "failed to create coredump\n");
  41  }
  42
  43 +void brcmf_fw_crashed(struct device *dev)
  44 +{
  45 +       struct brcmf_bus *bus_if = dev_get_drvdata(dev);
  46 +       struct brcmf_pub *drvr = bus_if->drvr;
  47 +
  48 +       bphy_err(drvr, "Firmware has halted or crashed\n");
  49 +
  50 +       brcmf_dev_coredump(dev);
  51 +}
  52 +
  53  void brcmf_detach(struct device *dev)
  54  {
  55         s32 i;
  56 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
  57 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
  58 @@ -730,7 +730,7 @@ static void brcmf_pcie_handle_mb_data(st
  59         }
  60         if (dtoh_mb_data & BRCMF_D2H_DEV_FWHALT) {
  61                 brcmf_dbg(PCIE, "D2H_MB_DATA: FW HALT\n");
  62 -               brcmf_dev_coredump(&devinfo->pdev->dev);
  63 +               brcmf_fw_crashed(&devinfo->pdev->dev);
  64         }
  65  }
  66
  67 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
  68 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
  69 @@ -1090,8 +1090,8 @@ static u32 brcmf_sdio_hostmail(struct br
  70
  71         /* dongle indicates the firmware has halted/crashed */
  72         if (hmb_data & HMB_DATA_FWHALT) {
  73 -               brcmf_err("mailbox indicates firmware halted\n");
  74 -               brcmf_dev_coredump(&sdiod->func1->dev);
  75 +               brcmf_dbg(SDIO, "mailbox indicates firmware halted\n");
  76 +               brcmf_fw_crashed(&sdiod->func1->dev);
  77         }
  78
  79         /* Dongle recomposed rx frames, accept them again */