linux/drivers/net/dsa/b53/b53_serdes.h
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   1/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause
   2 *
   3 * Northstar Plus switch SerDes/SGMII PHY definitions
   4 *
   5 * Copyright (C) 2018 Florian Fainelli <f.fainelli@gmail.com>
   6 */
   7
   8#include <linux/phy.h>
   9#include <linux/types.h>
  10
  11/* Non-standard page used to access SerDes PHY registers on NorthStar Plus */
  12#define B53_SERDES_PAGE                 0x16
  13#define B53_SERDES_BLKADDR              0x3e
  14#define B53_SERDES_LANE                 0x3c
  15
  16#define B53_SERDES_ID0                  0x20
  17#define  SERDES_ID0_MODEL_MASK          0x3f
  18#define  SERDES_ID0_REV_NUM_SHIFT       11
  19#define  SERDES_ID0_REV_NUM_MASK        0x7
  20#define  SERDES_ID0_REV_LETTER_SHIFT    14
  21
  22#define B53_SERDES_MII_REG(x)           (0x20 + (x) * 2)
  23#define B53_SERDES_DIGITAL_CONTROL(x)   (0x1e + (x) * 2)
  24#define B53_SERDES_DIGITAL_STATUS       0x28
  25
  26/* SERDES_DIGITAL_CONTROL1 */
  27#define  FIBER_MODE_1000X               BIT(0)
  28#define  TBI_INTERFACE                  BIT(1)
  29#define  SIGNAL_DETECT_EN               BIT(2)
  30#define  INVERT_SIGNAL_DETECT           BIT(3)
  31#define  AUTODET_EN                     BIT(4)
  32#define  SGMII_MASTER_MODE              BIT(5)
  33#define  DISABLE_DLL_PWRDOWN            BIT(6)
  34#define  CRC_CHECKER_DIS                BIT(7)
  35#define  COMMA_DET_EN                   BIT(8)
  36#define  ZERO_COMMA_DET_EN              BIT(9)
  37#define  REMOTE_LOOPBACK                BIT(10)
  38#define  SEL_RX_PKTS_FOR_CNTR           BIT(11)
  39#define  MASTER_MDIO_PHY_SEL            BIT(13)
  40#define  DISABLE_SIGNAL_DETECT_FLT      BIT(14)
  41
  42/* SERDES_DIGITAL_CONTROL2 */
  43#define  EN_PARALLEL_DET                BIT(0)
  44#define  DIS_FALSE_LINK                 BIT(1)
  45#define  FLT_FORCE_LINK                 BIT(2)
  46#define  EN_AUTONEG_ERR_TIMER           BIT(3)
  47#define  DIS_REMOTE_FAULT_SENSING       BIT(4)
  48#define  FORCE_XMIT_DATA                BIT(5)
  49#define  AUTONEG_FAST_TIMERS            BIT(6)
  50#define  DIS_CARRIER_EXTEND             BIT(7)
  51#define  DIS_TRRR_GENERATION            BIT(8)
  52#define  BYPASS_PCS_RX                  BIT(9)
  53#define  BYPASS_PCS_TX                  BIT(10)
  54#define  TEST_CNTR_EN                   BIT(11)
  55#define  TX_PACKET_SEQ_TEST             BIT(12)
  56#define  TX_IDLE_JAM_SEQ_TEST           BIT(13)
  57#define  CLR_BER_CNTR                   BIT(14)
  58
  59/* SERDES_DIGITAL_CONTROL3 */
  60#define  TX_FIFO_RST                    BIT(0)
  61#define  FIFO_ELAST_TX_RX_SHIFT         1
  62#define  FIFO_ELAST_TX_RX_5K            0
  63#define  FIFO_ELAST_TX_RX_10K           1
  64#define  FIFO_ELAST_TX_RX_13_5K         2
  65#define  FIFO_ELAST_TX_RX_18_5K         3
  66#define  BLOCK_TXEN_MODE                BIT(9)
  67#define  JAM_FALSE_CARRIER_MODE         BIT(10)
  68#define  EXT_PHY_CRS_MODE               BIT(11)
  69#define  INVERT_EXT_PHY_CRS             BIT(12)
  70#define  DISABLE_TX_CRS                 BIT(13)
  71
  72/* SERDES_DIGITAL_STATUS */
  73#define  SGMII_MODE                     BIT(0)
  74#define  LINK_STATUS                    BIT(1)
  75#define  DUPLEX_STATUS                  BIT(2)
  76#define  SPEED_STATUS_SHIFT             3
  77#define  SPEED_STATUS_10                0
  78#define  SPEED_STATUS_100               1
  79#define  SPEED_STATUS_1000              2
  80#define  SPEED_STATUS_2500              3
  81#define  SPEED_STATUS_MASK              SPEED_STATUS_2500
  82#define  PAUSE_RESOLUTION_TX_SIDE       BIT(5)
  83#define  PAUSE_RESOLUTION_RX_SIDE       BIT(6)
  84#define  LINK_STATUS_CHANGE             BIT(7)
  85#define  EARLY_END_EXT_DET              BIT(8)
  86#define  CARRIER_EXT_ERR_DET            BIT(9)
  87#define  RX_ERR_DET                     BIT(10)
  88#define  TX_ERR_DET                     BIT(11)
  89#define  CRC_ERR_DET                    BIT(12)
  90#define  FALSE_CARRIER_ERR_DET          BIT(13)
  91#define  RXFIFO_ERR_DET                 BIT(14)
  92#define  TXFIFO_ERR_DET                 BIT(15)
  93
  94/* Block offsets */
  95#define SERDES_DIGITAL_BLK              0x8300
  96#define SERDES_ID0                      0x8310
  97#define SERDES_MII_BLK                  0xffe0
  98#define SERDES_XGXSBLK0_BLOCKADDRESS    0xffd0
  99
 100struct phylink_link_state;
 101
 102static inline u8 b53_serdes_map_lane(struct b53_device *dev, int port)
 103{
 104        if (!dev->ops->serdes_map_lane)
 105                return B53_INVALID_LANE;
 106
 107        return dev->ops->serdes_map_lane(dev, port);
 108}
 109
 110int b53_serdes_get_link(struct b53_device *dev, int port);
 111int b53_serdes_link_state(struct b53_device *dev, int port,
 112                          struct phylink_link_state *state);
 113void b53_serdes_config(struct b53_device *dev, int port, unsigned int mode,
 114                       const struct phylink_link_state *state);
 115void b53_serdes_an_restart(struct b53_device *dev, int port);
 116void b53_serdes_link_set(struct b53_device *dev, int port, unsigned int mode,
 117                         phy_interface_t interface, bool link_up);
 118void b53_serdes_phylink_validate(struct b53_device *dev, int port,
 119                                unsigned long *supported,
 120                                struct phylink_link_state *state);
 121#if IS_ENABLED(CONFIG_B53_SERDES)
 122int b53_serdes_init(struct b53_device *dev, int port);
 123#else
 124static inline int b53_serdes_init(struct b53_device *dev, int port)
 125{
 126        return -ENODEV;
 127}
 128#endif
 129