git.openwrt.org Git - openwrt/staging/stintel.git/blob

   1 From 73b7a6047971aa6ce4a70fc4901964d14f077171 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
   3 Date: Wed, 6 Jan 2021 22:32:02 +0100
   4 Subject: [PATCH] net: dsa: bcm_sf2: support BCM4908's integrated switch
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 BCM4908 family SoCs come with integrated Starfighter 2 switch. Its
  10 registers layout it a mix of BCM7278 and BCM7445. It has 5 integrated
  11 PHYs and 8 ports. It also supports RGMII and SerDes.
  12
  13 Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  14 Acked-by: Florian Fainelli <f.fainelli@gmail.com>
  15 Link: https://lore.kernel.org/r/20210106213202.17459-3-zajec5@gmail.com
  16 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
  17 ---
  18  drivers/net/dsa/b53/b53_common.c | 14 +++++++++++++
  19  drivers/net/dsa/b53/b53_priv.h   |  1 +
  20  drivers/net/dsa/bcm_sf2.c        | 36 +++++++++++++++++++++++++++++---
  21  drivers/net/dsa/bcm_sf2_regs.h   |  1 +
  22  4 files changed, 49 insertions(+), 3 deletions(-)
  23
  24 --- a/drivers/net/dsa/b53/b53_common.c
  25 +++ b/drivers/net/dsa/b53/b53_common.c
  26 @@ -2493,6 +2493,22 @@ static const struct b53_chip_data b53_sw
  27                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
  28                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
  29         },
  30 +       /* Starfighter 2 */
  31 +       {
  32 +               .chip_id = BCM4908_DEVICE_ID,
  33 +               .dev_name = "BCM4908",
  34 +               .vlans = 4096,
  35 +               .enabled_ports = 0x1bf,
  36 +#if 0
  37 +               .arl_bins = 4,
  38 +               .arl_buckets = 256,
  39 +#endif
  40 +               .cpu_port = 8, /* TODO: ports 4, 5, 8 */
  41 +               .vta_regs = B53_VTA_REGS,
  42 +               .duplex_reg = B53_DUPLEX_STAT_GE,
  43 +               .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
  44 +               .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
  45 +       },
  46         {
  47                 .chip_id = BCM7445_DEVICE_ID,
  48                 .dev_name = "BCM7445",
  49 --- a/drivers/net/dsa/b53/b53_priv.h
  50 +++ b/drivers/net/dsa/b53/b53_priv.h
  51 @@ -64,6 +64,7 @@ struct b53_io_ops {
  52  #define B53_INVALID_LANE       0xff
  53
  54  enum {
  55 +       BCM4908_DEVICE_ID = 0x4908,
  56         BCM5325_DEVICE_ID = 0x25,
  57         BCM5365_DEVICE_ID = 0x65,
  58         BCM5389_DEVICE_ID = 0x89,
  59 --- a/drivers/net/dsa/bcm_sf2.c
  60 +++ b/drivers/net/dsa/bcm_sf2.c
  61 @@ -105,7 +105,8 @@ static void bcm_sf2_imp_setup(struct dsa
  62         b53_brcm_hdr_setup(ds, port);
  63
  64         if (port == 8) {
  65 -               if (priv->type == BCM7445_DEVICE_ID)
  66 +               if (priv->type == BCM4908_DEVICE_ID ||
  67 +                   priv->type == BCM7445_DEVICE_ID)
  68                         offset = CORE_STS_OVERRIDE_IMP;
  69                 else
  70                         offset = CORE_STS_OVERRIDE_IMP2;
  71 @@ -711,7 +712,8 @@ static void bcm_sf2_sw_mac_link_down(str
  72         u32 reg, offset;
  73
  74         if (port != core_readl(priv, CORE_IMP0_PRT_ID)) {
  75 -               if (priv->type == BCM7445_DEVICE_ID)
  76 +               if (priv->type == BCM4908_DEVICE_ID ||
  77 +                   priv->type == BCM7445_DEVICE_ID)
  78                         offset = CORE_STS_OVERRIDE_GMIIP_PORT(port);
  79                 else
  80                         offset = CORE_STS_OVERRIDE_GMIIP2_PORT(port);
  81 @@ -738,7 +740,8 @@ static void bcm_sf2_sw_mac_link_up(struc
  82         bcm_sf2_sw_mac_link_set(ds, port, interface, true);
  83
  84         if (port != core_readl(priv, CORE_IMP0_PRT_ID)) {
  85 -               if (priv->type == BCM7445_DEVICE_ID)
  86 +               if (priv->type == BCM4908_DEVICE_ID ||
  87 +                   priv->type == BCM7445_DEVICE_ID)
  88                         offset = CORE_STS_OVERRIDE_GMIIP_PORT(port);
  89                 else
  90                         offset = CORE_STS_OVERRIDE_GMIIP2_PORT(port);
  91 @@ -1131,6 +1134,30 @@ struct bcm_sf2_of_data {
  92         unsigned int num_cfp_rules;
  93  };
  94
  95 +static const u16 bcm_sf2_4908_reg_offsets[] = {
  96 +       [REG_SWITCH_CNTRL]      = 0x00,
  97 +       [REG_SWITCH_STATUS]     = 0x04,
  98 +       [REG_DIR_DATA_WRITE]    = 0x08,
  99 +       [REG_DIR_DATA_READ]     = 0x0c,
 100 +       [REG_SWITCH_REVISION]   = 0x10,
 101 +       [REG_PHY_REVISION]      = 0x14,
 102 +       [REG_SPHY_CNTRL]        = 0x24,
 103 +       [REG_CROSSBAR]          = 0xc8,
 104 +       [REG_RGMII_0_CNTRL]     = 0xe0,
 105 +       [REG_RGMII_1_CNTRL]     = 0xec,
 106 +       [REG_RGMII_2_CNTRL]     = 0xf8,
 107 +       [REG_LED_0_CNTRL]       = 0x40,
 108 +       [REG_LED_1_CNTRL]       = 0x4c,
 109 +       [REG_LED_2_CNTRL]       = 0x58,
 110 +};
 111 +
 112 +static const struct bcm_sf2_of_data bcm_sf2_4908_data = {
 113 +       .type           = BCM4908_DEVICE_ID,
 114 +       .core_reg_align = 0,
 115 +       .reg_offsets    = bcm_sf2_4908_reg_offsets,
 116 +       .num_cfp_rules  = 0, /* FIXME */
 117 +};
 118 +
 119  /* Register offsets for the SWITCH_REG_* block */
 120  static const u16 bcm_sf2_7445_reg_offsets[] = {
 121         [REG_SWITCH_CNTRL]      = 0x00,
 122 @@ -1179,6 +1206,9 @@ static const struct bcm_sf2_of_data bcm_
 123  };
 124
 125  static const struct of_device_id bcm_sf2_of_match[] = {
 126 +       { .compatible = "brcm,bcm4908-switch",
 127 +         .data = &bcm_sf2_4908_data
 128 +       },
 129         { .compatible = "brcm,bcm7445-switch-v4.0",
 130           .data = &bcm_sf2_7445_data
 131         },
 132 --- a/drivers/net/dsa/bcm_sf2_regs.h
 133 +++ b/drivers/net/dsa/bcm_sf2_regs.h
 134 @@ -17,6 +17,7 @@ enum bcm_sf2_reg_offs {
 135         REG_SWITCH_REVISION,
 136         REG_PHY_REVISION,
 137         REG_SPHY_CNTRL,
 138 +       REG_CROSSBAR,
 139         REG_RGMII_0_CNTRL,
 140         REG_RGMII_1_CNTRL,
 141         REG_RGMII_2_CNTRL,