target/linux/layerscape/patches-5.4/701-net-0055-sdk_fman-DPAA-dTSEC-ports-fail-to-work-when-link-cha.patch

   1 From 2b3d05ed1cb560b3a0b0721435c2fd73a19bd9bc Mon Sep 17 00:00:00 2001
   2 From: Iordache Florinel-R70177 <florinel.iordache@nxp.com>
   3 Date: Mon, 29 May 2017 09:25:24 +0300
   4 Subject: [PATCH] sdk_fman: DPAA-dTSEC ports fail to work when link changes
   5
   6 Signed-off-by: Iordache Florinel-R70177 <florinel.iordache@nxp.com>
   7 ---
   8  .../freescale/sdk_fman/Peripherals/FM/MAC/dtsec.c  | 57 ++++++++++++++++++----
   9  1 file changed, 48 insertions(+), 9 deletions(-)
  10
  11 --- a/drivers/net/ethernet/freescale/sdk_fman/Peripherals/FM/MAC/dtsec.c
  12 +++ b/drivers/net/ethernet/freescale/sdk_fman/Peripherals/FM/MAC/dtsec.c
  13 @@ -386,6 +386,7 @@ static void FreeInitResources(t_Dtsec *p
  14  static t_Error GracefulStop(t_Dtsec *p_Dtsec, e_CommMode mode)
  15  {
  16      struct dtsec_regs *p_MemMap;
  17 +    int pollTimeout = 0;
  18
  19      ASSERT_COND(p_Dtsec);
  20
  21 @@ -408,16 +409,32 @@ static t_Error GracefulStop(t_Dtsec *p_D
  22      }
  23
  24      if (mode & e_COMM_MODE_TX)
  25 -#if defined(FM_GTS_ERRATA_DTSEC_A004) || defined(FM_GTS_AFTER_MAC_ABORTED_FRAME_ERRATA_DTSEC_A0012)
  26 -    if (p_Dtsec->fmMacControllerDriver.fmRevInfo.majorRev == 2)
  27 -        DBG(INFO, ("GTS not supported due to DTSEC_A004 errata."));
  28 -#else  /* not defined(FM_GTS_ERRATA_DTSEC_A004) ||... */
  29 -#ifdef FM_GTS_UNDERRUN_ERRATA_DTSEC_A0014
  30 -        DBG(INFO, ("GTS not supported due to DTSEC_A0014 errata."));
  31 -#else  /* FM_GTS_UNDERRUN_ERRATA_DTSEC_A0014 */
  32 +    {
  33 +#if defined(FM_GTS_ERRATA_DTSEC_A004)
  34 +        if (p_Dtsec->fmMacControllerDriver.fmRevInfo.majorRev == 2)
  35 +            DBG(INFO, ("GTS not supported due to DTSEC_A004 errata."));
  36 +#else  /* not defined(FM_GTS_ERRATA_DTSEC_A004) */
  37 +
  38          fman_dtsec_stop_tx(p_MemMap);
  39 -#endif /* FM_GTS_UNDERRUN_ERRATA_DTSEC_A0014 */
  40 -#endif /* defined(FM_GTS_ERRATA_DTSEC_A004) ||...  */
  41 +
  42 +#if defined(FM_GTS_UNDERRUN_ERRATA_DTSEC_A0014) || defined(FM_GTS_AFTER_MAC_ABORTED_FRAME_ERRATA_DTSEC_A0012)
  43 +        XX_UDelay(10);
  44 +#endif /* FM_GTS_UNDERRUN_ERRATA_DTSEC_A0014 || FM_GTS_AFTER_MAC_ABORTED_FRAME_ERRATA_DTSEC_A0012 */
  45 +#endif /* defined(FM_GTS_ERRATA_DTSEC_A004) */
  46 +    }
  47 +
  48 +    /* Poll GRSC/GTSC bits in IEVENT register until both are set */
  49 +#if defined(FM_GRS_ERRATA_DTSEC_A002) || defined(FM_GTS_ERRATA_DTSEC_A004) || defined(FM_GTS_AFTER_MAC_ABORTED_FRAME_ERRATA_DTSEC_A0012) || defined(FM_GTS_UNDERRUN_ERRATA_DTSEC_A0014) || defined(FM_GTS_AFTER_DROPPED_FRAME_ERRATA_DTSEC_A004839)
  50 +    XX_UDelay(10);
  51 +#else
  52 +    while (fman_dtsec_get_event(p_MemMap, DTSEC_IMASK_GRSCEN | DTSEC_IMASK_GTSCEN) != (DTSEC_IMASK_GRSCEN | DTSEC_IMASK_GTSCEN))
  53 +    {
  54 +        if (pollTimeout == 100)
  55 +            break;
  56 +        XX_UDelay(1);
  57 +        pollTimeout++;
  58 +    }
  59 +#endif
  60
  61      return E_OK;
  62  }
  63 @@ -632,7 +649,12 @@ static t_Error DtsecSetTxPauseFrames(t_H
  64                        " value should be greater than 320."));
  65  #endif /* FM_BAD_TX_TS_IN_B_2_B_ERRATA_DTSEC_A003 */
  66
  67 +    GracefulStop(p_Dtsec, e_COMM_MODE_RX_AND_TX);
  68 +
  69      fman_dtsec_set_tx_pause_frames(p_Dtsec->p_MemMap, pauseTime);
  70 +
  71 +    GracefulRestart(p_Dtsec, e_COMM_MODE_RX_AND_TX);
  72 +
  73      return E_OK;
  74  }
  75
  76 @@ -653,8 +675,12 @@ static t_Error DtsecRxIgnoreMacPause(t_H
  77      SANITY_CHECK_RETURN_ERROR(p_Dtsec, E_INVALID_STATE);
  78      SANITY_CHECK_RETURN_ERROR(!p_Dtsec->p_DtsecDriverParam, E_INVALID_STATE);
  79
  80 +    GracefulStop(p_Dtsec, e_COMM_MODE_RX_AND_TX);
  81 +
  82      fman_dtsec_handle_rx_pause(p_Dtsec->p_MemMap, accept_pause);
  83
  84 +    GracefulRestart(p_Dtsec, e_COMM_MODE_RX_AND_TX);
  85 +
  86      return E_OK;
  87  }
  88
  89 @@ -787,8 +813,13 @@ static t_Error DtsecModifyMacAddress (t_
  90      /* Initialize MAC Station Address registers (1 & 2)    */
  91      /* Station address have to be swapped (big endian to little endian */
  92      p_Dtsec->addr = ENET_ADDR_TO_UINT64(*p_EnetAddr);
  93 +
  94 +    GracefulStop(p_Dtsec, e_COMM_MODE_RX_AND_TX);
  95 +
  96      fman_dtsec_set_mac_address(p_Dtsec->p_MemMap, (uint8_t *)(*p_EnetAddr));
  97
  98 +    GracefulRestart(p_Dtsec, e_COMM_MODE_RX_AND_TX);
  99 +
 100      return E_OK;
 101  }
 102
 103 @@ -1076,8 +1107,12 @@ static t_Error DtsecSetWakeOnLan(t_Handl
 104      SANITY_CHECK_RETURN_ERROR(p_Dtsec, E_INVALID_STATE);
 105      SANITY_CHECK_RETURN_ERROR(!p_Dtsec->p_DtsecDriverParam, E_INVALID_STATE);
 106
 107 +    GracefulStop(p_Dtsec, e_COMM_MODE_RX_AND_TX);
 108 +
 109      fman_dtsec_set_wol(p_Dtsec->p_MemMap, en);
 110
 111 +    GracefulRestart(p_Dtsec, e_COMM_MODE_RX_AND_TX);
 112 +
 113      return E_OK;
 114  }
 115
 116 @@ -1098,11 +1133,15 @@ static t_Error DtsecAdjustLink(t_Handle
 117      enet_speed = (enum enet_speed) ENET_SPEED_FROM_MODE(p_Dtsec->enetMode);
 118      p_Dtsec->halfDuplex = !fullDuplex;
 119
 120 +    GracefulStop(p_Dtsec, e_COMM_MODE_RX_AND_TX);
 121 +
 122      err = fman_dtsec_adjust_link(p_Dtsec->p_MemMap, enet_interface, enet_speed, fullDuplex);
 123
 124      if (err == -EINVAL)
 125          RETURN_ERROR(MAJOR, E_CONFLICT, ("Ethernet interface does not support Half Duplex mode"));
 126
 127 +    GracefulRestart(p_Dtsec, e_COMM_MODE_RX_AND_TX);
 128 +
 129      return (t_Error)err;
 130  }
 131