target/linux/generic/backport-5.15/771-v6.0-02-net-dsa-qca8k-make-mib-autocast-feature-optional.patch

   1 From 533c64bca62a8654f00698bc893f639013e38c7b Mon Sep 17 00:00:00 2001
   2 From: Christian Marangi <ansuelsmth@gmail.com>
   3 Date: Wed, 27 Jul 2022 13:35:11 +0200
   4 Subject: [PATCH 02/14] net: dsa: qca8k: make mib autocast feature optional
   5
   6 Some switch may not support mib autocast feature and require the legacy
   7 way of reading the regs directly.
   8 Make the mib autocast feature optional and permit to declare support for
   9 it using match_data struct in a dedicated qca8k_info_ops struct.
  10
  11 Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
  12 Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
  13 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
  14 ---
  15  drivers/net/dsa/qca/qca8k.c | 11 +++++++++--
  16  drivers/net/dsa/qca/qca8k.h |  5 +++++
  17  2 files changed, 14 insertions(+), 2 deletions(-)
  18
  19 --- a/drivers/net/dsa/qca/qca8k.c
  20 +++ b/drivers/net/dsa/qca/qca8k.c
  21 @@ -2254,8 +2254,8 @@ qca8k_get_ethtool_stats(struct dsa_switc
  22         u32 hi = 0;
  23         int ret;
  24
  25 -       if (priv->mgmt_master &&
  26 -           qca8k_get_ethtool_stats_eth(ds, port, data) > 0)
  27 +       if (priv->mgmt_master && priv->info->ops->autocast_mib &&
  28 +           priv->info->ops->autocast_mib(ds, port, data) > 0)
  29                 return;
  30
  31         for (i = 0; i < priv->info->mib_count; i++) {
  32 @@ -3187,20 +3187,27 @@ static int qca8k_resume(struct device *d
  33  static SIMPLE_DEV_PM_OPS(qca8k_pm_ops,
  34                          qca8k_suspend, qca8k_resume);
  35
  36 +static const struct qca8k_info_ops qca8xxx_ops = {
  37 +       .autocast_mib = qca8k_get_ethtool_stats_eth,
  38 +};
  39 +
  40  static const struct qca8k_match_data qca8327 = {
  41         .id = QCA8K_ID_QCA8327,
  42         .reduced_package = true,
  43         .mib_count = QCA8K_QCA832X_MIB_COUNT,
  44 +       .ops = &qca8xxx_ops,
  45  };
  46
  47  static const struct qca8k_match_data qca8328 = {
  48         .id = QCA8K_ID_QCA8327,
  49         .mib_count = QCA8K_QCA832X_MIB_COUNT,
  50 +       .ops = &qca8xxx_ops,
  51  };
  52
  53  static const struct qca8k_match_data qca833x = {
  54         .id = QCA8K_ID_QCA8337,
  55         .mib_count = QCA8K_QCA833X_MIB_COUNT,
  56 +       .ops = &qca8xxx_ops,
  57  };
  58
  59  static const struct of_device_id qca8k_of_match[] = {
  60 --- a/drivers/net/dsa/qca/qca8k.h
  61 +++ b/drivers/net/dsa/qca/qca8k.h
  62 @@ -324,10 +324,15 @@ enum qca8k_mid_cmd {
  63         QCA8K_MIB_CAST = 3,
  64  };
  65
  66 +struct qca8k_info_ops {
  67 +       int (*autocast_mib)(struct dsa_switch *ds, int port, u64 *data);
  68 +};
  69 +
  70  struct qca8k_match_data {
  71         u8 id;
  72         bool reduced_package;
  73         u8 mib_count;
  74 +       const struct qca8k_info_ops *ops;
  75  };
  76
  77  enum {