package/kernel/mac80211/patches/345-0001-brcmfmac-fix-for-proper-support-of-160MHz-bandwidth.patch

   1 From: Arend van Spriel <arend.vanspriel@broadcom.com>
   2 Date: Wed, 5 Sep 2018 09:48:58 +0200
   3 Subject: [PATCH] brcmfmac: fix for proper support of 160MHz bandwidth
   4
   5 Decoding of firmware channel information was not complete for 160MHz
   6 support. This resulted in the following warning:
   7
   8   WARNING: CPU: 2 PID: 2222 at .../broadcom/brcm80211/brcmutil/d11.c:196
   9         brcmu_d11ac_decchspec+0x2e/0x100 [brcmutil]
  10   Modules linked in: brcmfmac(O) brcmutil(O) sha256_generic cfg80211 ...
  11   CPU: 2 PID: 2222 Comm: kworker/2:0 Tainted: G           O
  12   4.17.0-wt-testing-x64-00002-gf1bed50 #1
  13   Hardware name: Dell Inc. Latitude E6410/07XJP9, BIOS A07 02/15/2011
  14   Workqueue: events request_firmware_work_func
  15   RIP: 0010:brcmu_d11ac_decchspec+0x2e/0x100 [brcmutil]
  16   RSP: 0018:ffffc90000047bd0 EFLAGS: 00010206
  17   RAX: 000000000000e832 RBX: ffff8801146fe910 RCX: ffff8801146fd3c0
  18   RDX: 0000000000002800 RSI: 0000000000000070 RDI: ffffc90000047c30
  19   RBP: ffffc90000047bd0 R08: 0000000000000000 R09: ffffffffa0798c80
  20   R10: ffff88012bca55e0 R11: ffff880110a4ea00 R12: ffff8801146f8000
  21   R13: ffffc90000047c30 R14: ffff8801146fe930 R15: ffff8801138e02e0
  22   FS:  0000000000000000(0000) GS:ffff88012bc80000(0000) knlGS:0000000000000000
  23   CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  24   CR2: 00007f18ce8b8070 CR3: 000000000200a003 CR4: 00000000000206e0
  25   Call Trace:
  26    brcmf_setup_wiphybands+0x212/0x780 [brcmfmac]
  27    brcmf_cfg80211_attach+0xae2/0x11a0 [brcmfmac]
  28    brcmf_attach+0x1fc/0x4b0 [brcmfmac]
  29    ? __kmalloc+0x13c/0x1c0
  30    brcmf_pcie_setup+0x99b/0xe00 [brcmfmac]
  31    brcmf_fw_request_done+0x16a/0x1f0 [brcmfmac]
  32    request_firmware_work_func+0x36/0x60
  33    process_one_work+0x146/0x350
  34    worker_thread+0x4a/0x3b0
  35    kthread+0x102/0x140
  36    ? process_one_work+0x350/0x350
  37    ? kthread_bind+0x20/0x20
  38    ret_from_fork+0x35/0x40
  39   Code: 66 90 0f b7 07 55 48 89 e5 89 c2 88 47 02 88 47 03 66 81 e2 00 38
  40         66 81 fa 00 18 74 6e 66 81 fa 00 20 74 39 66 81 fa 00 10 74 14 <0f>
  41         0b 66 25 00 c0 74 20 66 3d 00 c0 75 20 c6 47 04 01 5d c3 66
  42   ---[ end trace 550c46682415b26d ]---
  43   brcmfmac: brcmf_construct_chaninfo: Ignoring unexpected firmware channel 50
  44
  45 This patch adds the missing stuff to properly handle this.
  46
  47 Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
  48 Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
  49 Reviewed-by: Franky Lin <franky.lin@broadcom.com>
  50 Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
  51 ---
  52  .../net/wireless/broadcom/brcm80211/brcmutil/d11.c | 34 +++++++++++++++++++++-
  53  .../broadcom/brcm80211/include/brcmu_wifi.h        |  2 ++
  54  2 files changed, 35 insertions(+), 1 deletion(-)
  55
  56 --- a/drivers/net/wireless/broadcom/brcm80211/brcmutil/d11.c
  57 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmutil/d11.c
  58 @@ -77,6 +77,8 @@ static u16 d11ac_bw(enum brcmu_chan_bw b
  59                 return BRCMU_CHSPEC_D11AC_BW_40;
  60         case BRCMU_CHAN_BW_80:
  61                 return BRCMU_CHSPEC_D11AC_BW_80;
  62 +       case BRCMU_CHAN_BW_160:
  63 +               return BRCMU_CHSPEC_D11AC_BW_160;
  64         default:
  65                 WARN_ON(1);
  66         }
  67 @@ -190,8 +192,38 @@ static void brcmu_d11ac_decchspec(struct
  68                         break;
  69                 }
  70                 break;
  71 -       case BRCMU_CHSPEC_D11AC_BW_8080:
  72         case BRCMU_CHSPEC_D11AC_BW_160:
  73 +               switch (ch->sb) {
  74 +               case BRCMU_CHAN_SB_LLL:
  75 +                       ch->control_ch_num -= CH_70MHZ_APART;
  76 +                       break;
  77 +               case BRCMU_CHAN_SB_LLU:
  78 +                       ch->control_ch_num -= CH_50MHZ_APART;
  79 +                       break;
  80 +               case BRCMU_CHAN_SB_LUL:
  81 +                       ch->control_ch_num -= CH_30MHZ_APART;
  82 +                       break;
  83 +               case BRCMU_CHAN_SB_LUU:
  84 +                       ch->control_ch_num -= CH_10MHZ_APART;
  85 +                       break;
  86 +               case BRCMU_CHAN_SB_ULL:
  87 +                       ch->control_ch_num += CH_10MHZ_APART;
  88 +                       break;
  89 +               case BRCMU_CHAN_SB_ULU:
  90 +                       ch->control_ch_num += CH_30MHZ_APART;
  91 +                       break;
  92 +               case BRCMU_CHAN_SB_UUL:
  93 +                       ch->control_ch_num += CH_50MHZ_APART;
  94 +                       break;
  95 +               case BRCMU_CHAN_SB_UUU:
  96 +                       ch->control_ch_num += CH_70MHZ_APART;
  97 +                       break;
  98 +               default:
  99 +                       WARN_ON_ONCE(1);
 100 +                       break;
 101 +               }
 102 +               break;
 103 +       case BRCMU_CHSPEC_D11AC_BW_8080:
 104         default:
 105                 WARN_ON_ONCE(1);
 106                 break;
 107 --- a/drivers/net/wireless/broadcom/brcm80211/include/brcmu_wifi.h
 108 +++ b/drivers/net/wireless/broadcom/brcm80211/include/brcmu_wifi.h
 109 @@ -29,6 +29,8 @@
 110  #define CH_UPPER_SB                    0x01
 111  #define CH_LOWER_SB                    0x02
 112  #define CH_EWA_VALID                   0x04
 113 +#define CH_70MHZ_APART                 14
 114 +#define CH_50MHZ_APART                 10
 115  #define CH_30MHZ_APART                 6
 116  #define CH_20MHZ_APART                 4
 117  #define CH_10MHZ_APART                 2