target/linux/generic/backport-5.15/729-14-v6.2-net-ethernet-mtk_wed-add-reset-to-tx_ring_setup-call.patch

   1 From: Lorenzo Bianconi <lorenzo@kernel.org>
   2 Date: Thu, 24 Nov 2022 16:22:55 +0100
   3 Subject: [PATCH] net: ethernet: mtk_wed: add reset to tx_ring_setup callback
   4
   5 Introduce reset parameter to mtk_wed_tx_ring_setup signature.
   6 This is a preliminary patch to add Wireless Ethernet Dispatcher reset
   7 support.
   8
   9 Co-developed-by: Sujuan Chen <sujuan.chen@mediatek.com>
  10 Signed-off-by: Sujuan Chen <sujuan.chen@mediatek.com>
  11 Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
  12 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
  13 ---
  14
  15 --- a/drivers/net/ethernet/mediatek/mtk_wed.c
  16 +++ b/drivers/net/ethernet/mediatek/mtk_wed.c
  17 @@ -1188,7 +1188,8 @@ mtk_wed_ring_alloc(struct mtk_wed_device
  18  }
  19
  20  static int
  21 -mtk_wed_wdma_rx_ring_setup(struct mtk_wed_device *dev, int idx, int size)
  22 +mtk_wed_wdma_rx_ring_setup(struct mtk_wed_device *dev, int idx, int size,
  23 +                          bool reset)
  24  {
  25         u32 desc_size = sizeof(struct mtk_wdma_desc) * dev->hw->version;
  26         struct mtk_wed_ring *wdma;
  27 @@ -1197,8 +1198,8 @@ mtk_wed_wdma_rx_ring_setup(struct mtk_we
  28                 return -EINVAL;
  29
  30         wdma = &dev->rx_wdma[idx];
  31 -       if (mtk_wed_ring_alloc(dev, wdma, MTK_WED_WDMA_RING_SIZE, desc_size,
  32 -                              true))
  33 +       if (!reset && mtk_wed_ring_alloc(dev, wdma, MTK_WED_WDMA_RING_SIZE,
  34 +                                        desc_size, true))
  35                 return -ENOMEM;
  36
  37         wdma_w32(dev, MTK_WDMA_RING_RX(idx) + MTK_WED_RING_OFS_BASE,
  38 @@ -1396,7 +1397,7 @@ mtk_wed_start(struct mtk_wed_device *dev
  39
  40         for (i = 0; i < ARRAY_SIZE(dev->rx_wdma); i++)
  41                 if (!dev->rx_wdma[i].desc)
  42 -                       mtk_wed_wdma_rx_ring_setup(dev, i, 16);
  43 +                       mtk_wed_wdma_rx_ring_setup(dev, i, 16, false);
  44
  45         mtk_wed_hw_init(dev);
  46         mtk_wed_configure_irq(dev, irq_mask);
  47 @@ -1505,7 +1506,8 @@ unlock:
  48  }
  49
  50  static int
  51 -mtk_wed_tx_ring_setup(struct mtk_wed_device *dev, int idx, void __iomem *regs)
  52 +mtk_wed_tx_ring_setup(struct mtk_wed_device *dev, int idx, void __iomem *regs,
  53 +                     bool reset)
  54  {
  55         struct mtk_wed_ring *ring = &dev->tx_ring[idx];
  56
  57 @@ -1524,11 +1526,12 @@ mtk_wed_tx_ring_setup(struct mtk_wed_dev
  58         if (WARN_ON(idx >= ARRAY_SIZE(dev->tx_ring)))
  59                 return -EINVAL;
  60
  61 -       if (mtk_wed_ring_alloc(dev, ring, MTK_WED_TX_RING_SIZE,
  62 -                              sizeof(*ring->desc), true))
  63 +       if (!reset && mtk_wed_ring_alloc(dev, ring, MTK_WED_TX_RING_SIZE,
  64 +                                        sizeof(*ring->desc), true))
  65                 return -ENOMEM;
  66
  67 -       if (mtk_wed_wdma_rx_ring_setup(dev, idx, MTK_WED_WDMA_RING_SIZE))
  68 +       if (mtk_wed_wdma_rx_ring_setup(dev, idx, MTK_WED_WDMA_RING_SIZE,
  69 +                                      reset))
  70                 return -ENOMEM;
  71
  72         ring->reg_base = MTK_WED_RING_TX(idx);
  73 --- a/include/linux/soc/mediatek/mtk_wed.h
  74 +++ b/include/linux/soc/mediatek/mtk_wed.h
  75 @@ -158,7 +158,7 @@ struct mtk_wed_device {
  76  struct mtk_wed_ops {
  77         int (*attach)(struct mtk_wed_device *dev);
  78         int (*tx_ring_setup)(struct mtk_wed_device *dev, int ring,
  79 -                            void __iomem *regs);
  80 +                            void __iomem *regs, bool reset);
  81         int (*rx_ring_setup)(struct mtk_wed_device *dev, int ring,
  82                              void __iomem *regs);
  83         int (*txfree_ring_setup)(struct mtk_wed_device *dev,
  84 @@ -216,8 +216,8 @@ mtk_wed_get_rx_capa(struct mtk_wed_devic
  85  #define mtk_wed_device_active(_dev) !!(_dev)->ops
  86  #define mtk_wed_device_detach(_dev) (_dev)->ops->detach(_dev)
  87  #define mtk_wed_device_start(_dev, _mask) (_dev)->ops->start(_dev, _mask)
  88 -#define mtk_wed_device_tx_ring_setup(_dev, _ring, _regs) \
  89 -       (_dev)->ops->tx_ring_setup(_dev, _ring, _regs)
  90 +#define mtk_wed_device_tx_ring_setup(_dev, _ring, _regs, _reset) \
  91 +       (_dev)->ops->tx_ring_setup(_dev, _ring, _regs, _reset)
  92  #define mtk_wed_device_txfree_ring_setup(_dev, _regs) \
  93         (_dev)->ops->txfree_ring_setup(_dev, _regs)
  94  #define mtk_wed_device_reg_read(_dev, _reg) \
  95 @@ -243,7 +243,7 @@ static inline bool mtk_wed_device_active
  96  }
  97  #define mtk_wed_device_detach(_dev) do {} while (0)
  98  #define mtk_wed_device_start(_dev, _mask) do {} while (0)
  99 -#define mtk_wed_device_tx_ring_setup(_dev, _ring, _regs) -ENODEV
 100 +#define mtk_wed_device_tx_ring_setup(_dev, _ring, _regs, _reset) -ENODEV
 101  #define mtk_wed_device_txfree_ring_setup(_dev, _ring, _regs) -ENODEV
 102  #define mtk_wed_device_reg_read(_dev, _reg) 0
 103  #define mtk_wed_device_reg_write(_dev, _reg, _val) do {} while (0)