package/kernel/mac80211/patches/321-v4.16-0002-brcmfmac-separate-firmware-errors-from-i-o-errors.patch

   1 From b69c1df47281ad47bd2037a42b98f5c7115b7fd5 Mon Sep 17 00:00:00 2001
   2 From: Arend Van Spriel <arend.vanspriel@broadcom.com>
   3 Date: Mon, 22 Jan 2018 21:46:40 +0100
   4 Subject: [PATCH] brcmfmac: separate firmware errors from i/o errors
   5
   6 When using the firmware api it can fail simply because firmware does
   7 not like the request or it fails due to issues in the host interface.
   8 Currently, there is only a single error code which is confusing. So
   9 adding a parameter to pass the firmware error separately and in case
  10 of a firmware error always return -EBADE to user-space.
  11
  12 Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
  13 Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
  14 Reviewed-by: Franky Lin <franky.lin@broadcom.com>
  15 Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
  16 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
  17 ---
  18  drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c  | 11 ++++++-----
  19  drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c  | 16 +++++++++++-----
  20  .../net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c    | 10 ++++++----
  21  drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h | 14 ++++++++------
  22  4 files changed, 31 insertions(+), 20 deletions(-)
  23
  24 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
  25 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
  26 @@ -165,7 +165,7 @@ static int brcmf_proto_bcdc_cmplt(struct
  27
  28  static int
  29  brcmf_proto_bcdc_query_dcmd(struct brcmf_pub *drvr, int ifidx, uint cmd,
  30 -                           void *buf, uint len)
  31 +                           void *buf, uint len, int *fwerr)
  32  {
  33         struct brcmf_bcdc *bcdc = (struct brcmf_bcdc *)drvr->proto->pd;
  34         struct brcmf_proto_bcdc_dcmd *msg = &bcdc->msg;
  35 @@ -175,6 +175,7 @@ brcmf_proto_bcdc_query_dcmd(struct brcmf
  36
  37         brcmf_dbg(BCDC, "Enter, cmd %d len %d\n", cmd, len);
  38
  39 +       *fwerr = 0;
  40         ret = brcmf_proto_bcdc_msg(drvr, ifidx, cmd, buf, len, false);
  41         if (ret < 0) {
  42                 brcmf_err("brcmf_proto_bcdc_msg failed w/status %d\n",
  43 @@ -215,15 +216,14 @@ retry:
  44
  45         /* Check the ERROR flag */
  46         if (flags & BCDC_DCMD_ERROR)
  47 -               ret = le32_to_cpu(msg->status);
  48 -
  49 +               *fwerr = le32_to_cpu(msg->status);
  50  done:
  51         return ret;
  52  }
  53
  54  static int
  55  brcmf_proto_bcdc_set_dcmd(struct brcmf_pub *drvr, int ifidx, uint cmd,
  56 -                         void *buf, uint len)
  57 +                         void *buf, uint len, int *fwerr)
  58  {
  59         struct brcmf_bcdc *bcdc = (struct brcmf_bcdc *)drvr->proto->pd;
  60         struct brcmf_proto_bcdc_dcmd *msg = &bcdc->msg;
  61 @@ -232,6 +232,7 @@ brcmf_proto_bcdc_set_dcmd(struct brcmf_p
  62
  63         brcmf_dbg(BCDC, "Enter, cmd %d len %d\n", cmd, len);
  64
  65 +       *fwerr = 0;
  66         ret = brcmf_proto_bcdc_msg(drvr, ifidx, cmd, buf, len, true);
  67         if (ret < 0)
  68                 goto done;
  69 @@ -255,7 +256,7 @@ brcmf_proto_bcdc_set_dcmd(struct brcmf_p
  70
  71         /* Check the ERROR flag */
  72         if (flags & BCDC_DCMD_ERROR)
  73 -               ret = le32_to_cpu(msg->status);
  74 +               *fwerr = le32_to_cpu(msg->status);
  75
  76  done:
  77         return ret;
  78 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c
  79 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c
  80 @@ -107,7 +107,7 @@ static s32
  81  brcmf_fil_cmd_data(struct brcmf_if *ifp, u32 cmd, void *data, u32 len, bool set)
  82  {
  83         struct brcmf_pub *drvr = ifp->drvr;
  84 -       s32 err;
  85 +       s32 err, fwerr;
  86
  87         if (drvr->bus_if->state != BRCMF_BUS_UP) {
  88                 brcmf_err("bus is down. we have nothing to do.\n");
  89 @@ -117,14 +117,20 @@ brcmf_fil_cmd_data(struct brcmf_if *ifp,
  90         if (data != NULL)
  91                 len = min_t(uint, len, BRCMF_DCMD_MAXLEN);
  92         if (set)
  93 -               err = brcmf_proto_set_dcmd(drvr, ifp->ifidx, cmd, data, len);
  94 +               err = brcmf_proto_set_dcmd(drvr, ifp->ifidx, cmd,
  95 +                                          data, len, &fwerr);
  96         else
  97 -               err = brcmf_proto_query_dcmd(drvr, ifp->ifidx, cmd, data, len);
  98 +               err = brcmf_proto_query_dcmd(drvr, ifp->ifidx, cmd,
  99 +                                            data, len, &fwerr);
 100
 101 -       if (err)
 102 +       if (err) {
 103                 brcmf_dbg(FIL, "Failed: %s (%d)\n",
 104                           brcmf_fil_get_errstr((u32)(-err)), err);
 105 -
 106 +       } else if (fwerr < 0) {
 107 +               brcmf_dbg(FIL, "Firmware error: %s (%d)\n",
 108 +                         brcmf_fil_get_errstr((u32)(-fwerr)), fwerr);
 109 +               err = -EBADE;
 110 +       }
 111         return err;
 112  }
 113
 114 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
 115 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
 116 @@ -477,7 +477,7 @@ static void brcmf_msgbuf_ioctl_resp_wake
 117
 118
 119  static int brcmf_msgbuf_query_dcmd(struct brcmf_pub *drvr, int ifidx,
 120 -                                  uint cmd, void *buf, uint len)
 121 +                                  uint cmd, void *buf, uint len, int *fwerr)
 122  {
 123         struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
 124         struct sk_buff *skb = NULL;
 125 @@ -485,6 +485,7 @@ static int brcmf_msgbuf_query_dcmd(struc
 126         int err;
 127
 128         brcmf_dbg(MSGBUF, "ifidx=%d, cmd=%d, len=%d\n", ifidx, cmd, len);
 129 +       *fwerr = 0;
 130         msgbuf->ctl_completed = false;
 131         err = brcmf_msgbuf_tx_ioctl(drvr, ifidx, cmd, buf, len);
 132         if (err)
 133 @@ -508,14 +509,15 @@ static int brcmf_msgbuf_query_dcmd(struc
 134         }
 135         brcmu_pkt_buf_free_skb(skb);
 136
 137 -       return msgbuf->ioctl_resp_status;
 138 +       *fwerr = msgbuf->ioctl_resp_status;
 139 +       return 0;
 140  }
 141
 142
 143  static int brcmf_msgbuf_set_dcmd(struct brcmf_pub *drvr, int ifidx,
 144 -                                uint cmd, void *buf, uint len)
 145 +                                uint cmd, void *buf, uint len, int *fwerr)
 146  {
 147 -       return brcmf_msgbuf_query_dcmd(drvr, ifidx, cmd, buf, len);
 148 +       return brcmf_msgbuf_query_dcmd(drvr, ifidx, cmd, buf, len, fwerr);
 149  }
 150
 151
 152 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h
 153 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h
 154 @@ -30,9 +30,9 @@ struct brcmf_proto {
 155         int (*hdrpull)(struct brcmf_pub *drvr, bool do_fws,
 156                        struct sk_buff *skb, struct brcmf_if **ifp);
 157         int (*query_dcmd)(struct brcmf_pub *drvr, int ifidx, uint cmd,
 158 -                         void *buf, uint len);
 159 +                         void *buf, uint len, int *fwerr);
 160         int (*set_dcmd)(struct brcmf_pub *drvr, int ifidx, uint cmd, void *buf,
 161 -                       uint len);
 162 +                       uint len, int *fwerr);
 163         int (*tx_queue_data)(struct brcmf_pub *drvr, int ifidx,
 164                              struct sk_buff *skb);
 165         int (*txdata)(struct brcmf_pub *drvr, int ifidx, u8 offset,
 166 @@ -71,14 +71,16 @@ static inline int brcmf_proto_hdrpull(st
 167         return drvr->proto->hdrpull(drvr, do_fws, skb, ifp);
 168  }
 169  static inline int brcmf_proto_query_dcmd(struct brcmf_pub *drvr, int ifidx,
 170 -                                        uint cmd, void *buf, uint len)
 171 +                                        uint cmd, void *buf, uint len,
 172 +                                        int *fwerr)
 173  {
 174 -       return drvr->proto->query_dcmd(drvr, ifidx, cmd, buf, len);
 175 +       return drvr->proto->query_dcmd(drvr, ifidx, cmd, buf, len,fwerr);
 176  }
 177  static inline int brcmf_proto_set_dcmd(struct brcmf_pub *drvr, int ifidx,
 178 -                                      uint cmd, void *buf, uint len)
 179 +                                      uint cmd, void *buf, uint len,
 180 +                                      int *fwerr)
 181  {
 182 -       return drvr->proto->set_dcmd(drvr, ifidx, cmd, buf, len);
 183 +       return drvr->proto->set_dcmd(drvr, ifidx, cmd, buf, len, fwerr);
 184  }
 185
 186  static inline int brcmf_proto_tx_queue_data(struct brcmf_pub *drvr, int ifidx,