net: mvpp2: introduce PPv2.2 HW descriptors and adapt accessors

This commit adds the definition of the PPv2.2 HW descriptors, adjusts
the mvpp2_tx_desc and mvpp2_rx_desc structures accordingly, and adapts
the accessors to work on both PPv2.1 and PPv2.2.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c
index e9710e8..746b5be 100644 (file)
--- a/drivers/net/ethernet/marvell/mvpp2.c
+++ b/drivers/net/ethernet/marvell/mvpp2.c
@@ -767,18 +767,42 @@ struct mvpp21_rx_desc {
        u32 reserved8;
 };
 
+/* HW TX descriptor for PPv2.2 */
+struct mvpp22_tx_desc {
+       u32 command;
+       u8  packet_offset;
+       u8  phys_txq;
+       u16 data_size;
+       u64 reserved1;
+       u64 buf_dma_addr_ptp;
+       u64 buf_cookie_misc;
+};
+
+/* HW RX descriptor for PPv2.2 */
+struct mvpp22_rx_desc {
+       u32 status;
+       u16 reserved1;
+       u16 data_size;
+       u32 reserved2;
+       u32 reserved3;
+       u64 buf_dma_addr_key_hash;
+       u64 buf_cookie_misc;
+};
+
 /* Opaque type used by the driver to manipulate the HW TX and RX
  * descriptors
  */
 struct mvpp2_tx_desc {
        union {
                struct mvpp21_tx_desc pp21;
+               struct mvpp22_tx_desc pp22;
        };
 };
 
 struct mvpp2_rx_desc {
        union {
                struct mvpp21_rx_desc pp21;
+               struct mvpp22_rx_desc pp22;
        };
 };
 
@@ -969,78 +993,118 @@ static u32 mvpp2_read(struct mvpp2 *priv, u32 offset)
 static dma_addr_t mvpp2_txdesc_dma_addr_get(struct mvpp2_port *port,
                                            struct mvpp2_tx_desc *tx_desc)
 {
-       return tx_desc->pp21.buf_dma_addr;
+       if (port->priv->hw_version == MVPP21)
+               return tx_desc->pp21.buf_dma_addr;
+       else
+               return tx_desc->pp22.buf_dma_addr_ptp & GENMASK_ULL(40, 0);
 }
 
 static void mvpp2_txdesc_dma_addr_set(struct mvpp2_port *port,
                                      struct mvpp2_tx_desc *tx_desc,
                                      dma_addr_t dma_addr)
 {
-       tx_desc->pp21.buf_dma_addr = dma_addr;
+       if (port->priv->hw_version == MVPP21) {
+               tx_desc->pp21.buf_dma_addr = dma_addr;
+       } else {
+               u64 val = (u64)dma_addr;
+
+               tx_desc->pp22.buf_dma_addr_ptp &= ~GENMASK_ULL(40, 0);
+               tx_desc->pp22.buf_dma_addr_ptp |= val;
+       }
 }
 
 static size_t mvpp2_txdesc_size_get(struct mvpp2_port *port,
                                    struct mvpp2_tx_desc *tx_desc)
 {
-       return tx_desc->pp21.data_size;
+       if (port->priv->hw_version == MVPP21)
+               return tx_desc->pp21.data_size;
+       else
+               return tx_desc->pp22.data_size;
 }
 
 static void mvpp2_txdesc_size_set(struct mvpp2_port *port,
                                  struct mvpp2_tx_desc *tx_desc,
                                  size_t size)
 {
-       tx_desc->pp21.data_size = size;
+       if (port->priv->hw_version == MVPP21)
+               tx_desc->pp21.data_size = size;
+       else
+               tx_desc->pp22.data_size = size;
 }
 
 static void mvpp2_txdesc_txq_set(struct mvpp2_port *port,
                                 struct mvpp2_tx_desc *tx_desc,
                                 unsigned int txq)
 {
-       tx_desc->pp21.phys_txq = txq;
+       if (port->priv->hw_version == MVPP21)
+               tx_desc->pp21.phys_txq = txq;
+       else
+               tx_desc->pp22.phys_txq = txq;
 }
 
 static void mvpp2_txdesc_cmd_set(struct mvpp2_port *port,
                                 struct mvpp2_tx_desc *tx_desc,
                                 unsigned int command)
 {
-       tx_desc->pp21.command = command;
+       if (port->priv->hw_version == MVPP21)
+               tx_desc->pp21.command = command;
+       else
+               tx_desc->pp22.command = command;
 }
 
 static void mvpp2_txdesc_offset_set(struct mvpp2_port *port,
                                    struct mvpp2_tx_desc *tx_desc,
                                    unsigned int offset)
 {
-       tx_desc->pp21.packet_offset = offset;
+       if (port->priv->hw_version == MVPP21)
+               tx_desc->pp21.packet_offset = offset;
+       else
+               tx_desc->pp22.packet_offset = offset;
 }
 
 static unsigned int mvpp2_txdesc_offset_get(struct mvpp2_port *port,
                                            struct mvpp2_tx_desc *tx_desc)
 {
-       return tx_desc->pp21.packet_offset;
+       if (port->priv->hw_version == MVPP21)
+               return tx_desc->pp21.packet_offset;
+       else
+               return tx_desc->pp22.packet_offset;
 }
 
 static dma_addr_t mvpp2_rxdesc_dma_addr_get(struct mvpp2_port *port,
                                            struct mvpp2_rx_desc *rx_desc)
 {
-       return rx_desc->pp21.buf_dma_addr;
+       if (port->priv->hw_version == MVPP21)
+               return rx_desc->pp21.buf_dma_addr;
+       else
+               return rx_desc->pp22.buf_dma_addr_key_hash & GENMASK_ULL(40, 0);
 }
 
 static unsigned long mvpp2_rxdesc_cookie_get(struct mvpp2_port *port,
                                             struct mvpp2_rx_desc *rx_desc)
 {
-       return rx_desc->pp21.buf_cookie;
+       if (port->priv->hw_version == MVPP21)
+               return rx_desc->pp21.buf_cookie;
+       else
+               return rx_desc->pp22.buf_cookie_misc & GENMASK_ULL(40, 0);
 }
 
 static size_t mvpp2_rxdesc_size_get(struct mvpp2_port *port,
                                    struct mvpp2_rx_desc *rx_desc)
 {
-       return rx_desc->pp21.data_size;
+       if (port->priv->hw_version == MVPP21)
+               return rx_desc->pp21.data_size;
+       else
+               return rx_desc->pp22.data_size;
 }
 
 static u32 mvpp2_rxdesc_status_get(struct mvpp2_port *port,
                                   struct mvpp2_rx_desc *rx_desc)
 {
-       return rx_desc->pp21.status;
+       if (port->priv->hw_version == MVPP21)
+               return rx_desc->pp21.status;
+       else
+               return rx_desc->pp22.status;
 }
 
 static void mvpp2_txq_inc_get(struct mvpp2_txq_pcpu *txq_pcpu)