target/linux/layerscape/patches-5.4/701-net-0300-staging-fsl_ppfe-eth-use-mask-for-rx-max-frame-len.patch

   1 From f5be11cd83a6d6d4de7bd7cbeb641bb1032c4f84 Mon Sep 17 00:00:00 2001
   2 From: Calvin Johnson <calvin.johnson@nxp.com>
   3 Date: Wed, 20 Jun 2018 10:22:50 +0530
   4 Subject: [PATCH] staging: fsl_ppfe/eth: use mask for rx max frame len
   5
   6 Define and use PFE_RCR_MAX_FL_MASK to properly set Rx max frame
   7 length of MAC Receive Control Register.
   8
   9 Signed-off-by: Calvin Johnson <calvin.johnson@nxp.com>
  10 ---
  11  drivers/staging/fsl_ppfe/pfe_hal.c | 10 ++++++----
  12  1 file changed, 6 insertions(+), 4 deletions(-)
  13
  14 --- a/drivers/staging/fsl_ppfe/pfe_hal.c
  15 +++ b/drivers/staging/fsl_ppfe/pfe_hal.c
  16 @@ -19,6 +19,8 @@
  17  #include "pfe_mod.h"
  18  #include "pfe/pfe.h"
  19
  20 +#define PFE_RCR_MAX_FL_MASK    0xC000FFFF
  21 +
  22  void *cbus_base_addr;
  23  void *ddr_base_addr;
  24  unsigned long ddr_phys_base_addr;
  25 @@ -1011,8 +1013,8 @@ void gemac_no_broadcast(void *base)
  26  void gemac_enable_1536_rx(void *base)
  27  {
  28         /* Set 1536 as Maximum frame length */
  29 -       writel(readl(base + EMAC_RCNTRL_REG) | (1536 << 16), base +
  30 -               EMAC_RCNTRL_REG);
  31 +       writel((readl(base + EMAC_RCNTRL_REG) & PFE_RCR_MAX_FL_MASK)
  32 +               | (1536 << 16), base +  EMAC_RCNTRL_REG);
  33  }
  34
  35  /* GEMAC enable jumbo function.
  36 @@ -1020,8 +1022,8 @@ void gemac_enable_1536_rx(void *base)
  37   */
  38  void gemac_enable_rx_jmb(void *base)
  39  {
  40 -       writel(readl(base + EMAC_RCNTRL_REG) | (JUMBO_FRAME_SIZE << 16), base
  41 -               + EMAC_RCNTRL_REG);
  42 +       writel((readl(base + EMAC_RCNTRL_REG) & PFE_RCR_MAX_FL_MASK)
  43 +               | (JUMBO_FRAME_SIZE << 16), base + EMAC_RCNTRL_REG);
  44  }
  45
  46  /* GEMAC enable stacked vlan function.